Merge tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking updates from Jakub Kicinski:
 "Core:

   - Enable memcg accounting for various networking objects.

  BPF:

   - Introduce bpf timers.

   - Add perf link and opaque bpf_cookie which the program can read out
     again, to be used in libbpf-based USDT library.

   - Add bpf_task_pt_regs() helper to access user space pt_regs in
     kprobes, to help user space stack unwinding.

   - Add support for UNIX sockets for BPF sockmap.

   - Extend BPF iterator support for UNIX domain sockets.

   - Allow BPF TCP congestion control progs and bpf iterators to call
     bpf_setsockopt(), e.g. to switch to another congestion control
     algorithm.

  Protocols:

   - Support IOAM Pre-allocated Trace with IPv6.

   - Support Management Component Transport Protocol.

   - bridge: multicast: add vlan support.

   - netfilter: add hooks for the SRv6 lightweight tunnel driver.

   - tcp:
       - enable mid-stream window clamping (by user space or BPF)
       - allow data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD
       - more accurate DSACK processing for RACK-TLP

   - mptcp:
       - add full mesh path manager option
       - add partial support for MP_FAIL
       - improve use of backup subflows
       - optimize option processing

   - af_unix: add OOB notification support.

   - ipv6: add IFLA_INET6_RA_MTU to expose MTU value advertised by the
     router.

   - mac80211: Target Wake Time support in AP mode.

   - can: j1939: extend UAPI to notify about RX status.

  Driver APIs:

   - Add page frag support in page pool API.

   - Many improvements to the DSA (distributed switch) APIs.

   - ethtool: extend IRQ coalesce uAPI with timer reset modes.

   - devlink: control which auxiliary devices are created.

   - Support CAN PHYs via the generic PHY subsystem.

   - Proper cross-chip support for tag_8021q.

   - Allow TX forwarding for the software bridge data path to be
     offloaded to capable devices.

  Drivers:

   - veth: more flexible channels number configuration.

   - openvswitch: introduce per-cpu upcall dispatch.

   - Add internet mix (IMIX) mode to pktgen.

   - Transparently handle XDP operations in the bonding driver.

   - Add LiteETH network driver.

   - Renesas (ravb):
       - support Gigabit Ethernet IP

   - NXP Ethernet switch (sja1105):
       - fast aging support
       - support for "H" switch topologies
       - traffic termination for ports under VLAN-aware bridge

   - Intel 1G Ethernet
       - support getcrosststamp() with PCIe PTM (Precision Time
         Measurement) for better time sync
       - support Credit-Based Shaper (CBS) offload, enabling HW traffic
         prioritization and bandwidth reservation

   - Broadcom Ethernet (bnxt)
       - support pulse-per-second output
       - support larger Rx rings

   - Mellanox Ethernet (mlx5)
       - support ethtool RSS contexts and MQPRIO channel mode
       - support LAG offload with bridging
       - support devlink rate limit API
       - support packet sampling on tunnels

   - Huawei Ethernet (hns3):
       - basic devlink support
       - add extended IRQ coalescing support
       - report extended link state

   - Netronome Ethernet (nfp):
       - add conntrack offload support

   - Broadcom WiFi (brcmfmac):
       - add WPA3 Personal with FT to supported cipher suites
       - support 43752 SDIO device

   - Intel WiFi (iwlwifi):
       - support scanning hidden 6GHz networks
       - support for a new hardware family (Bz)

   - Xen pv driver:
       - harden netfront against malicious backends

   - Qualcomm mobile
       - ipa: refactor power management and enable automatic suspend
       - mhi: move MBIM to WWAN subsystem interfaces

  Refactor:

   - Ambient BPF run context and cgroup storage cleanup.

   - Compat rework for ndo_ioctl.

  Old code removal:

   - prism54 remove the obsoleted driver, deprecated by the p54 driver.

   - wan: remove sbni/granch driver"

* tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1715 commits)
  net: Add depends on OF_NET for LiteX's LiteETH
  ipv6: seg6: remove duplicated include
  net: hns3: remove unnecessary spaces
  net: hns3: add some required spaces
  net: hns3: clean up a type mismatch warning
  net: hns3: refine function hns3_set_default_feature()
  ipv6: remove duplicated 'net/lwtunnel.h' include
  net: w5100: check return value after calling platform_get_resource()
  net/mlxbf_gige: Make use of devm_platform_ioremap_resourcexxx()
  net: mdio: mscc-miim: Make use of the helper function devm_platform_ioremap_resource()
  net: mdio-ipq4019: Make use of devm_platform_ioremap_resource()
  fou: remove sparse errors
  ipv4: fix endianness issue in inet_rtm_getroute_build_skb()
  octeontx2-af: Set proper errorcode for IPv4 checksum errors
  octeontx2-af: Fix static code analyzer reported issues
  octeontx2-af: Fix mailbox errors in nix_rss_flowkey_cfg
  octeontx2-af: Fix loop in free and unmap counter
  af_unix: fix potential NULL deref in unix_dgram_connect()
  dpaa2-eth: Replace strlcpy with strscpy
  octeontx2-af: Use NDC TX for transmit packet data
  ...

116 files changed, 10623 insertions, 1092 deletions

diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Makefile
index dd0388eab94d..c852eb40c4f7 100644
--- a/tools/testing/selftests/Makefile
+++ b/tools/testing/selftests/Makefile
@@ -39,6 +39,7 @@ TARGETS += move_mount_set_group
 TARGETS += mqueue
 TARGETS += nci
 TARGETS += net
+TARGETS += net/af_unix
 TARGETS += net/forwarding
 TARGETS += net/mptcp
 TARGETS += netfilter
diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore
index addcfd8b615e..433f8bef261e 100644
--- a/tools/testing/selftests/bpf/.gitignore
+++ b/tools/testing/selftests/bpf/.gitignore
@@ -23,7 +23,6 @@ test_skb_cgroup_id_user
 test_cgroup_storage
 test_flow_dissector
 flow_dissector_load
-test_netcnt
 test_tcpnotify_user
 test_libbpf
 test_tcp_check_syncookie_user
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index f405b20c1e6c..866531c08e4f 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -38,7 +38,7 @@ TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test
 	test_verifier_log test_dev_cgroup \
 	test_sock test_sockmap get_cgroup_id_user \
 	test_cgroup_storage \
-	test_netcnt test_tcpnotify_user test_sysctl \
+	test_tcpnotify_user test_sysctl \
 	test_progs-no_alu32
 
 # Also test bpf-gcc, if present
@@ -79,7 +79,7 @@ TEST_PROGS := test_kmod.sh \
 
 TEST_PROGS_EXTENDED := with_addr.sh \
 	with_tunnels.sh \
-	test_xdp_vlan.sh
+	test_xdp_vlan.sh test_bpftool.py
 
 # Compile but not part of 'make run_tests'
 TEST_GEN_PROGS_EXTENDED = test_sock_addr test_skb_cgroup_id_user \
@@ -187,6 +187,8 @@ $(OUTPUT)/runqslower: $(BPFOBJ) | $(DEFAULT_BPFTOOL)
 		    BPFOBJ=$(BPFOBJ) BPF_INCLUDE=$(INCLUDE_DIR) &&	\
 		    cp $(SCRATCH_DIR)/runqslower $@
 
+TEST_GEN_PROGS_EXTENDED += $(DEFAULT_BPFTOOL)
+
 $(TEST_GEN_PROGS) $(TEST_GEN_PROGS_EXTENDED): $(OUTPUT)/test_stub.o $(BPFOBJ)
 
 $(OUTPUT)/test_dev_cgroup: cgroup_helpers.c
@@ -197,7 +199,6 @@ $(OUTPUT)/test_sockmap: cgroup_helpers.c
 $(OUTPUT)/test_tcpnotify_user: cgroup_helpers.c trace_helpers.c
 $(OUTPUT)/get_cgroup_id_user: cgroup_helpers.c
 $(OUTPUT)/test_cgroup_storage: cgroup_helpers.c
-$(OUTPUT)/test_netcnt: cgroup_helpers.c
 $(OUTPUT)/test_sock_fields: cgroup_helpers.c
 $(OUTPUT)/test_sysctl: cgroup_helpers.c
 
diff --git a/tools/testing/selftests/bpf/README.rst b/tools/testing/selftests/bpf/README.rst
index 8deec1ca9150..9b17f2867488 100644
--- a/tools/testing/selftests/bpf/README.rst
+++ b/tools/testing/selftests/bpf/README.rst
@@ -19,6 +19,13 @@ the CI. It builds the kernel (without overwriting your existing Kconfig), recomp
 bpf selftests, runs them (by default ``tools/testing/selftests/bpf/test_progs``) and
 saves the resulting output (by default in ``~/.bpf_selftests``).
 
+Script dependencies:
+- clang (preferably built from sources, https://github.com/llvm/llvm-project);
+- pahole (preferably built from sources, https://git.kernel.org/pub/scm/devel/pahole/pahole.git/);
+- qemu;
+- docutils (for ``rst2man``);
+- libcap-devel.
+
 For more information on about using the script, run:
 
 .. code-block:: console
diff --git a/tools/testing/selftests/bpf/bpf_tcp_helpers.h b/tools/testing/selftests/bpf/bpf_tcp_helpers.h
index 029589c008c9..b1ede6f0b821 100644
--- a/tools/testing/selftests/bpf/bpf_tcp_helpers.h
+++ b/tools/testing/selftests/bpf/bpf_tcp_helpers.h
@@ -12,6 +12,10 @@
 SEC("struct_ops/"#name) \
 BPF_PROG(name, args)
 
+#ifndef SOL_TCP
+#define SOL_TCP 6
+#endif
+
 #define tcp_jiffies32 ((__u32)bpf_jiffies64())
 
 struct sock_common {
@@ -27,6 +31,7 @@ enum sk_pacing {
 
 struct sock {
 	struct sock_common	__sk_common;
+#define sk_state		__sk_common.skc_state
 	unsigned long		sk_pacing_rate;
 	__u32			sk_pacing_status; /* see enum sk_pacing */
 } __attribute__((preserve_access_index));
@@ -203,6 +208,20 @@ static __always_inline bool tcp_is_cwnd_limited(const struct sock *sk)
 	return !!BPF_CORE_READ_BITFIELD(tp, is_cwnd_limited);
 }
 
+static __always_inline bool tcp_cc_eq(const char *a, const char *b)
+{
+	int i;
+
+	for (i = 0; i < TCP_CA_NAME_MAX; i++) {
+		if (a[i] != b[i])
+			return false;
+		if (!a[i])
+			break;
+	}
+
+	return true;
+}
+
 extern __u32 tcp_slow_start(struct tcp_sock *tp, __u32 acked) __ksym;
 extern void tcp_cong_avoid_ai(struct tcp_sock *tp, __u32 w, __u32 acked) __ksym;
 
diff --git a/tools/testing/selftests/bpf/netcnt_common.h b/tools/testing/selftests/bpf/netcnt_common.h
index 81084c1c2c23..0ab1c88041cd 100644
--- a/tools/testing/selftests/bpf/netcnt_common.h
+++ b/tools/testing/selftests/bpf/netcnt_common.h
@@ -6,19 +6,39 @@
 
 #define MAX_PERCPU_PACKETS 32
 
-struct percpu_net_cnt {
-	__u64 packets;
-	__u64 bytes;
+/* sizeof(struct bpf_local_storage_elem):
+ *
+ * It really is about 128 bytes on x86_64, but allocate more to account for
+ * possible layout changes, different architectures, etc.
+ * The kernel will wrap up to PAGE_SIZE internally anyway.
+ */
+#define SIZEOF_BPF_LOCAL_STORAGE_ELEM		256
 
-	__u64 prev_ts;
+/* Try to estimate kernel's BPF_LOCAL_STORAGE_MAX_VALUE_SIZE: */
+#define BPF_LOCAL_STORAGE_MAX_VALUE_SIZE	(0xFFFF - \
+						 SIZEOF_BPF_LOCAL_STORAGE_ELEM)
 
-	__u64 prev_packets;
-	__u64 prev_bytes;
+#define PCPU_MIN_UNIT_SIZE			32768
+
+union percpu_net_cnt {
+	struct {
+		__u64 packets;
+		__u64 bytes;
+
+		__u64 prev_ts;
+
+		__u64 prev_packets;
+		__u64 prev_bytes;
+	};
+	__u8 data[PCPU_MIN_UNIT_SIZE];
 };
 
-struct net_cnt {
-	__u64 packets;
-	__u64 bytes;
+union net_cnt {
+	struct {
+		__u64 packets;
+		__u64 bytes;
+	};
+	__u8 data[BPF_LOCAL_STORAGE_MAX_VALUE_SIZE];
 };
 
 #endif
diff --git a/tools/testing/selftests/bpf/network_helpers.c b/tools/testing/selftests/bpf/network_helpers.c
index 2060bc122c53..7e9f6375757a 100644
--- a/tools/testing/selftests/bpf/network_helpers.c
+++ b/tools/testing/selftests/bpf/network_helpers.c
@@ -66,17 +66,13 @@ int settimeo(int fd, int timeout_ms)
 
 #define save_errno_close(fd) ({ int __save = errno; close(fd); errno = __save; })
 
-int start_server(int family, int type, const char *addr_str, __u16 port,
-		 int timeout_ms)
+static int __start_server(int type, const struct sockaddr *addr,
+			  socklen_t addrlen, int timeout_ms, bool reuseport)
 {
-	struct sockaddr_storage addr = {};
-	socklen_t len;
+	int on = 1;
 	int fd;
 
-	if (make_sockaddr(family, addr_str, port, &addr, &len))
-		return -1;
-
-	fd = socket(family, type, 0);
+	fd = socket(addr->sa_family, type, 0);
 	if (fd < 0) {
 		log_err("Failed to create server socket");
 		return -1;
@@ -85,7 +81,13 @@ int start_server(int family, int type, const char *addr_str, __u16 port,
 	if (settimeo(fd, timeout_ms))
 		goto error_close;
 
-	if (bind(fd, (const struct sockaddr *)&addr, len) < 0) {
+	if (reuseport &&
+	    setsockopt(fd, SOL_SOCKET, SO_REUSEPORT, &on, sizeof(on))) {
+		log_err("Failed to set SO_REUSEPORT");
+		return -1;
+	}
+
+	if (bind(fd, addr, addrlen) < 0) {
 		log_err("Failed to bind socket");
 		goto error_close;
 	}
@@ -104,6 +106,69 @@ error_close:
 	return -1;
 }
 
+int start_server(int family, int type, const char *addr_str, __u16 port,
+		 int timeout_ms)
+{
+	struct sockaddr_storage addr;
+	socklen_t addrlen;
+
+	if (make_sockaddr(family, addr_str, port, &addr, &addrlen))
+		return -1;
+
+	return __start_server(type, (struct sockaddr *)&addr,
+			      addrlen, timeout_ms, false);
+}
+
+int *start_reuseport_server(int family, int type, const char *addr_str,
+			    __u16 port, int timeout_ms, unsigned int nr_listens)
+{
+	struct sockaddr_storage addr;
+	unsigned int nr_fds = 0;
+	socklen_t addrlen;
+	int *fds;
+
+	if (!nr_listens)
+		return NULL;
+
+	if (make_sockaddr(family, addr_str, port, &addr, &addrlen))
+		return NULL;
+
+	fds = malloc(sizeof(*fds) * nr_listens);
+	if (!fds)
+		return NULL;
+
+	fds[0] = __start_server(type, (struct sockaddr *)&addr, addrlen,
+				timeout_ms, true);
+	if (fds[0] == -1)
+		goto close_fds;
+	nr_fds = 1;
+
+	if (getsockname(fds[0], (struct sockaddr *)&addr, &addrlen))
+		goto close_fds;
+
+	for (; nr_fds < nr_listens; nr_fds++) {
+		fds[nr_fds] = __start_server(type, (struct sockaddr *)&addr,
+					     addrlen, timeout_ms, true);
+		if (fds[nr_fds] == -1)
+			goto close_fds;
+	}
+
+	return fds;
+
+close_fds:
+	free_fds(fds, nr_fds);
+	return NULL;
+}
+
+void free_fds(int *fds, unsigned int nr_close_fds)
+{
+	if (fds) {
+		while (nr_close_fds)
+			close(fds[--nr_close_fds]);
+		free(fds);
+	}
+}
+
 int fastopen_connect(int server_fd, const char *data, unsigned int data_len,
 		     int timeout_ms)
 {
@@ -153,13 +218,18 @@ static int connect_fd_to_addr(int fd,
 	return 0;
 }
 
-int connect_to_fd(int server_fd, int timeout_ms)
+static const struct network_helper_opts default_opts;
+
+int connect_to_fd_opts(int server_fd, const struct network_helper_opts *opts)
 {
 	struct sockaddr_storage addr;
 	struct sockaddr_in *addr_in;
 	socklen_t addrlen, optlen;
 	int fd, type;
 
+	if (!opts)
+		opts = &default_opts;
+
 	optlen = sizeof(type);
 	if (getsockopt(server_fd, SOL_SOCKET, SO_TYPE, &type, &optlen)) {
 		log_err("getsockopt(SOL_TYPE)");
@@ -179,7 +249,12 @@ int connect_to_fd(int server_fd, int timeout_ms)
 		return -1;
 	}
 
-	if (settimeo(fd, timeout_ms))
+	if (settimeo(fd, opts->timeout_ms))
+		goto error_close;
+
+	if (opts->cc && opts->cc[0] &&
+	    setsockopt(fd, SOL_TCP, TCP_CONGESTION, opts->cc,
+		       strlen(opts->cc) + 1))
 		goto error_close;
 
 	if (connect_fd_to_addr(fd, &addr, addrlen))
@@ -192,6 +267,15 @@ error_close:
 	return -1;
 }
 
+int connect_to_fd(int server_fd, int timeout_ms)
+{
+	struct network_helper_opts opts = {
+		.timeout_ms = timeout_ms,
+	};
+
+	return connect_to_fd_opts(server_fd, &opts);
+}
+
 int connect_fd_to_fd(int client_fd, int server_fd, int timeout_ms)
 {
 	struct sockaddr_storage addr;
@@ -217,6 +301,7 @@ int make_sockaddr(int family, const char *addr_str, __u16 port,
 	if (family == AF_INET) {
 		struct sockaddr_in *sin = (void *)addr;
 
+		memset(addr, 0, sizeof(*sin));
 		sin->sin_family = AF_INET;
 		sin->sin_port = htons(port);
 		if (addr_str &&
@@ -230,6 +315,7 @@ int make_sockaddr(int family, const char *addr_str, __u16 port,
 	} else if (family == AF_INET6) {
 		struct sockaddr_in6 *sin6 = (void *)addr;
 
+		memset(addr, 0, sizeof(*sin6));
 		sin6->sin6_family = AF_INET6;
 		sin6->sin6_port = htons(port);
 		if (addr_str &&
@@ -243,3 +329,15 @@ int make_sockaddr(int family, const char *addr_str, __u16 port,
 	}
 	return -1;
 }
+
+char *ping_command(int family)
+{
+	if (family == AF_INET6) {
+		/* On some systems 'ping' doesn't support IPv6, so use ping6 if it is present. */
+		if (!system("which ping6 >/dev/null 2>&1"))
+			return "ping6";
+		else
+			return "ping -6";
+	}
+	return "ping";
+}
diff --git a/tools/testing/selftests/bpf/network_helpers.h b/tools/testing/selftests/bpf/network_helpers.h
index 5e0d51c07b63..da7e132657d5 100644
--- a/tools/testing/selftests/bpf/network_helpers.h
+++ b/tools/testing/selftests/bpf/network_helpers.h
@@ -17,6 +17,11 @@ typedef __u16 __sum16;
 #define VIP_NUM 5
 #define MAGIC_BYTES 123
 
+struct network_helper_opts {
+	const char *cc;
+	int timeout_ms;
+};
+
 /* ipv4 test vector */
 struct ipv4_packet {
 	struct ethhdr eth;
@@ -36,11 +41,17 @@ extern struct ipv6_packet pkt_v6;
 int settimeo(int fd, int timeout_ms);
 int start_server(int family, int type, const char *addr, __u16 port,
 		 int timeout_ms);
+int *start_reuseport_server(int family, int type, const char *addr_str,
+			    __u16 port, int timeout_ms,
+			    unsigned int nr_listens);
+void free_fds(int *fds, unsigned int nr_close_fds);
 int connect_to_fd(int server_fd, int timeout_ms);
+int connect_to_fd_opts(int server_fd, const struct network_helper_opts *opts);
 int connect_fd_to_fd(int client_fd, int server_fd, int timeout_ms);
 int fastopen_connect(int server_fd, const char *data, unsigned int data_len,
 		     int timeout_ms);
 int make_sockaddr(int family, const char *addr_str, __u16 port,
 		  struct sockaddr_storage *addr, socklen_t *len);
+char *ping_command(int family);
 
 #endif
diff --git a/tools/testing/selftests/bpf/prog_tests/attach_probe.c b/tools/testing/selftests/bpf/prog_tests/attach_probe.c
index ec11e20d2b92..bf307bb9e446 100644
--- a/tools/testing/selftests/bpf/prog_tests/attach_probe.c
+++ b/tools/testing/selftests/bpf/prog_tests/attach_probe.c
@@ -2,79 +2,28 @@
 #include <test_progs.h>
 #include "test_attach_probe.skel.h"
 
-#if defined(__powerpc64__) && defined(_CALL_ELF) && _CALL_ELF == 2
-
-#define OP_RT_RA_MASK   0xffff0000UL
-#define LIS_R2          0x3c400000UL
-#define ADDIS_R2_R12    0x3c4c0000UL
-#define ADDI_R2_R2      0x38420000UL
-
-static ssize_t get_offset(ssize_t addr, ssize_t base)
-{
-	u32 *insn = (u32 *) addr;
-
-	/*
-	 * A PPC64 ABIv2 function may have a local and a global entry
-	 * point. We need to use the local entry point when patching
-	 * functions, so identify and step over the global entry point
-	 * sequence.
-	 *
-	 * The global entry point sequence is always of the form:
-	 *
-	 * addis r2,r12,XXXX
-	 * addi  r2,r2,XXXX
-	 *
-	 * A linker optimisation may convert the addis to lis:
-	 *
-	 * lis   r2,XXXX
-	 * addi  r2,r2,XXXX
-	 */
-	if ((((*insn & OP_RT_RA_MASK) == ADDIS_R2_R12) ||
-	     ((*insn & OP_RT_RA_MASK) == LIS_R2)) &&
-	    ((*(insn + 1) & OP_RT_RA_MASK) == ADDI_R2_R2))
-		return (ssize_t)(insn + 2) - base;
-	else
-		return addr - base;
-}
-#else
-#define get_offset(addr, base) (addr - base)
-#endif
-
-ssize_t get_base_addr() {
-	size_t start, offset;
-	char buf[256];
-	FILE *f;
-
-	f = fopen("/proc/self/maps", "r");
-	if (!f)
-		return -errno;
-
-	while (fscanf(f, "%zx-%*x %s %zx %*[^\n]\n",
-		      &start, buf, &offset) == 3) {
-		if (strcmp(buf, "r-xp") == 0) {
-			fclose(f);
-			return start - offset;
-		}
-	}
-
-	fclose(f);
-	return -EINVAL;
-}
+/* this is how USDT semaphore is actually defined, except volatile modifier */
+volatile unsigned short uprobe_ref_ctr __attribute__((unused)) __attribute((section(".probes")));
 
 void test_attach_probe(void)
 {
+	DECLARE_LIBBPF_OPTS(bpf_uprobe_opts, uprobe_opts);
 	int duration = 0;
 	struct bpf_link *kprobe_link, *kretprobe_link;
 	struct bpf_link *uprobe_link, *uretprobe_link;
 	struct test_attach_probe* skel;
 	size_t uprobe_offset;
-	ssize_t base_addr;
+	ssize_t base_addr, ref_ctr_offset;
 
 	base_addr = get_base_addr();
 	if (CHECK(base_addr < 0, "get_base_addr",
 		  "failed to find base addr: %zd", base_addr))
 		return;
-	uprobe_offset = get_offset((size_t)&get_base_addr, base_addr);
+	uprobe_offset = get_uprobe_offset(&get_base_addr, base_addr);
+
+	ref_ctr_offset = get_rel_offset((uintptr_t)&uprobe_ref_ctr);
+	if (!ASSERT_GE(ref_ctr_offset, 0, "ref_ctr_offset"))
+		return;
 
 	skel = test_attach_probe__open_and_load();
 	if (CHECK(!skel, "skel_open", "failed to open skeleton\n"))
@@ -96,20 +45,28 @@ void test_attach_probe(void)
 		goto cleanup;
 	skel->links.handle_kretprobe = kretprobe_link;
 
-	uprobe_link = bpf_program__attach_uprobe(skel->progs.handle_uprobe,
-						 false /* retprobe */,
-						 0 /* self pid */,
-						 "/proc/self/exe",
-						 uprobe_offset);
+	ASSERT_EQ(uprobe_ref_ctr, 0, "uprobe_ref_ctr_before");
+
+	uprobe_opts.retprobe = false;
+	uprobe_opts.ref_ctr_offset = ref_ctr_offset;
+	uprobe_link = bpf_program__attach_uprobe_opts(skel->progs.handle_uprobe,
+						      0 /* self pid */,
+						      "/proc/self/exe",
+						      uprobe_offset,
+						      &uprobe_opts);
 	if (!ASSERT_OK_PTR(uprobe_link, "attach_uprobe"))
 		goto cleanup;
 	skel->links.handle_uprobe = uprobe_link;
 
-	uretprobe_link = bpf_program__attach_uprobe(skel->progs.handle_uretprobe,
-						    true /* retprobe */,
-						    -1 /* any pid */,
-						    "/proc/self/exe",
-						    uprobe_offset);
+	ASSERT_GT(uprobe_ref_ctr, 0, "uprobe_ref_ctr_after");
+
+	/* if uprobe uses ref_ctr, uretprobe has to use ref_ctr as well */
+	uprobe_opts.retprobe = true;
+	uprobe_opts.ref_ctr_offset = ref_ctr_offset;
+	uretprobe_link = bpf_program__attach_uprobe_opts(skel->progs.handle_uretprobe,
+							 -1 /* any pid */,
+							 "/proc/self/exe",
+							 uprobe_offset, &uprobe_opts);
 	if (!ASSERT_OK_PTR(uretprobe_link, "attach_uretprobe"))
 		goto cleanup;
 	skel->links.handle_uretprobe = uretprobe_link;
@@ -136,4 +93,5 @@ void test_attach_probe(void)
 
 cleanup:
 	test_attach_probe__destroy(skel);
+	ASSERT_EQ(uprobe_ref_ctr, 0, "uprobe_ref_ctr_cleanup");
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c b/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c
new file mode 100644
index 000000000000..5eea3c3a40fe
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_cookie.c
@@ -0,0 +1,254 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#define _GNU_SOURCE
+#include <pthread.h>
+#include <sched.h>
+#include <sys/syscall.h>
+#include <unistd.h>
+#include <test_progs.h>
+#include "test_bpf_cookie.skel.h"
+
+static void kprobe_subtest(struct test_bpf_cookie *skel)
+{
+	DECLARE_LIBBPF_OPTS(bpf_kprobe_opts, opts);
+	struct bpf_link *link1 = NULL, *link2 = NULL;
+	struct bpf_link *retlink1 = NULL, *retlink2 = NULL;
+
+	/* attach two kprobes */
+	opts.bpf_cookie = 0x1;
+	opts.retprobe = false;
+	link1 = bpf_program__attach_kprobe_opts(skel->progs.handle_kprobe,
+						 SYS_NANOSLEEP_KPROBE_NAME, &opts);
+	if (!ASSERT_OK_PTR(link1, "link1"))
+		goto cleanup;
+
+	opts.bpf_cookie = 0x2;
+	opts.retprobe = false;
+	link2 = bpf_program__attach_kprobe_opts(skel->progs.handle_kprobe,
+						 SYS_NANOSLEEP_KPROBE_NAME, &opts);
+	if (!ASSERT_OK_PTR(link2, "link2"))
+		goto cleanup;
+
+	/* attach two kretprobes */
+	opts.bpf_cookie = 0x10;
+	opts.retprobe = true;
+	retlink1 = bpf_program__attach_kprobe_opts(skel->progs.handle_kretprobe,
+						    SYS_NANOSLEEP_KPROBE_NAME, &opts);
+	if (!ASSERT_OK_PTR(retlink1, "retlink1"))
+		goto cleanup;
+
+	opts.bpf_cookie = 0x20;
+	opts.retprobe = true;
+	retlink2 = bpf_program__attach_kprobe_opts(skel->progs.handle_kretprobe,
+						    SYS_NANOSLEEP_KPROBE_NAME, &opts);
+	if (!ASSERT_OK_PTR(retlink2, "retlink2"))
+		goto cleanup;
+
+	/* trigger kprobe && kretprobe */
+	usleep(1);
+
+	ASSERT_EQ(skel->bss->kprobe_res, 0x1 | 0x2, "kprobe_res");
+	ASSERT_EQ(skel->bss->kretprobe_res, 0x10 | 0x20, "kretprobe_res");
+
+cleanup:
+	bpf_link__destroy(link1);
+	bpf_link__destroy(link2);
+	bpf_link__destroy(retlink1);
+	bpf_link__destroy(retlink2);
+}
+
+static void uprobe_subtest(struct test_bpf_cookie *skel)
+{
+	DECLARE_LIBBPF_OPTS(bpf_uprobe_opts, opts);
+	struct bpf_link *link1 = NULL, *link2 = NULL;
+	struct bpf_link *retlink1 = NULL, *retlink2 = NULL;
+	size_t uprobe_offset;
+	ssize_t base_addr;
+
+	base_addr = get_base_addr();
+	uprobe_offset = get_uprobe_offset(&get_base_addr, base_addr);
+
+	/* attach two uprobes */
+	opts.bpf_cookie = 0x100;
+	opts.retprobe = false;
+	link1 = bpf_program__attach_uprobe_opts(skel->progs.handle_uprobe, 0 /* self pid */,
+						"/proc/self/exe", uprobe_offset, &opts);
+	if (!ASSERT_OK_PTR(link1, "link1"))
+		goto cleanup;
+
+	opts.bpf_cookie = 0x200;
+	opts.retprobe = false;
+	link2 = bpf_program__attach_uprobe_opts(skel->progs.handle_uprobe, -1 /* any pid */,
+						"/proc/self/exe", uprobe_offset, &opts);
+	if (!ASSERT_OK_PTR(link2, "link2"))
+		goto cleanup;
+
+	/* attach two uretprobes */
+	opts.bpf_cookie = 0x1000;
+	opts.retprobe = true;
+	retlink1 = bpf_program__attach_uprobe_opts(skel->progs.handle_uretprobe, -1 /* any pid */,
+						   "/proc/self/exe", uprobe_offset, &opts);
+	if (!ASSERT_OK_PTR(retlink1, "retlink1"))
+		goto cleanup;
+
+	opts.bpf_cookie = 0x2000;
+	opts.retprobe = true;
+	retlink2 = bpf_program__attach_uprobe_opts(skel->progs.handle_uretprobe, 0 /* self pid */,
+						   "/proc/self/exe", uprobe_offset, &opts);
+	if (!ASSERT_OK_PTR(retlink2, "retlink2"))
+		goto cleanup;
+
+	/* trigger uprobe && uretprobe */
+	get_base_addr();
+
+	ASSERT_EQ(skel->bss->uprobe_res, 0x100 | 0x200, "uprobe_res");
+	ASSERT_EQ(skel->bss->uretprobe_res, 0x1000 | 0x2000, "uretprobe_res");
+
+cleanup:
+	bpf_link__destroy(link1);
+	bpf_link__destroy(link2);
+	bpf_link__destroy(retlink1);
+	bpf_link__destroy(retlink2);
+}
+
+static void tp_subtest(struct test_bpf_cookie *skel)
+{
+	DECLARE_LIBBPF_OPTS(bpf_tracepoint_opts, opts);
+	struct bpf_link *link1 = NULL, *link2 = NULL, *link3 = NULL;
+
+	/* attach first tp prog */
+	opts.bpf_cookie = 0x10000;
+	link1 = bpf_program__attach_tracepoint_opts(skel->progs.handle_tp1,
+						    "syscalls", "sys_enter_nanosleep", &opts);
+	if (!ASSERT_OK_PTR(link1, "link1"))
+		goto cleanup;
+
+	/* attach second tp prog */
+	opts.bpf_cookie = 0x20000;
+	link2 = bpf_program__attach_tracepoint_opts(skel->progs.handle_tp2,
+						    "syscalls", "sys_enter_nanosleep", &opts);
+	if (!ASSERT_OK_PTR(link2, "link2"))
+		goto cleanup;
+
+	/* trigger tracepoints */
+	usleep(1);
+
+	ASSERT_EQ(skel->bss->tp_res, 0x10000 | 0x20000, "tp_res1");
+
+	/* now we detach first prog and will attach third one, which causes
+	 * two internal calls to bpf_prog_array_copy(), shuffling
+	 * bpf_prog_array_items around. We test here that we don't lose track
+	 * of associated bpf_cookies.
+	 */
+	bpf_link__destroy(link1);
+	link1 = NULL;
+	kern_sync_rcu();
+	skel->bss->tp_res = 0;
+
+	/* attach third tp prog */
+	opts.bpf_cookie = 0x40000;
+	link3 = bpf_program__attach_tracepoint_opts(skel->progs.handle_tp3,
+						    "syscalls", "sys_enter_nanosleep", &opts);
+	if (!ASSERT_OK_PTR(link3, "link3"))
+		goto cleanup;
+
+	/* trigger tracepoints */
+	usleep(1);
+
+	ASSERT_EQ(skel->bss->tp_res, 0x20000 | 0x40000, "tp_res2");
+
+cleanup:
+	bpf_link__destroy(link1);
+	bpf_link__destroy(link2);
+	bpf_link__destroy(link3);
+}
+
+static void burn_cpu(void)
+{
+	volatile int j = 0;
+	cpu_set_t cpu_set;
+	int i, err;
+
+	/* generate some branches on cpu 0 */
+	CPU_ZERO(&cpu_set);
+	CPU_SET(0, &cpu_set);
+	err = pthread_setaffinity_np(pthread_self(), sizeof(cpu_set), &cpu_set);
+	ASSERT_OK(err, "set_thread_affinity");
+
+	/* spin the loop for a while (random high number) */
+	for (i = 0; i < 1000000; ++i)
+		++j;
+}
+
+static void pe_subtest(struct test_bpf_cookie *skel)
+{
+	DECLARE_LIBBPF_OPTS(bpf_perf_event_opts, opts);
+	struct bpf_link *link = NULL;
+	struct perf_event_attr attr;
+	int pfd = -1;
+
+	/* create perf event */
+	memset(&attr, 0, sizeof(attr));
+	attr.size = sizeof(attr);
+	attr.type = PERF_TYPE_SOFTWARE;
+	attr.config = PERF_COUNT_SW_CPU_CLOCK;
+	attr.freq = 1;
+	attr.sample_freq = 4000;
+	pfd = syscall(__NR_perf_event_open, &attr, -1, 0, -1, PERF_FLAG_FD_CLOEXEC);
+	if (!ASSERT_GE(pfd, 0, "perf_fd"))
+		goto cleanup;
+
+	opts.bpf_cookie = 0x100000;
+	link = bpf_program__attach_perf_event_opts(skel->progs.handle_pe, pfd, &opts);
+	if (!ASSERT_OK_PTR(link, "link1"))
+		goto cleanup;
+
+	burn_cpu(); /* trigger BPF prog */
+
+	ASSERT_EQ(skel->bss->pe_res, 0x100000, "pe_res1");
+
+	/* prevent bpf_link__destroy() closing pfd itself */
+	bpf_link__disconnect(link);
+	/* close BPF link's FD explicitly */
+	close(bpf_link__fd(link));
+	/* free up memory used by struct bpf_link */
+	bpf_link__destroy(link);
+	link = NULL;
+	kern_sync_rcu();
+	skel->bss->pe_res = 0;
+
+	opts.bpf_cookie = 0x200000;
+	link = bpf_program__attach_perf_event_opts(skel->progs.handle_pe, pfd, &opts);
+	if (!ASSERT_OK_PTR(link, "link2"))
+		goto cleanup;
+
+	burn_cpu(); /* trigger BPF prog */
+
+	ASSERT_EQ(skel->bss->pe_res, 0x200000, "pe_res2");
+
+cleanup:
+	close(pfd);
+	bpf_link__destroy(link);
+}
+
+void test_bpf_cookie(void)
+{
+	struct test_bpf_cookie *skel;
+
+	skel = test_bpf_cookie__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "skel_open"))
+		return;
+
+	skel->bss->my_tid = syscall(SYS_gettid);
+
+	if (test__start_subtest("kprobe"))
+		kprobe_subtest(skel);
+	if (test__start_subtest("uprobe"))
+		uprobe_subtest(skel);
+	if (test__start_subtest("tracepoint"))
+		tp_subtest(skel);
+	if (test__start_subtest("perf_event"))
+		pe_subtest(skel);
+
+	test_bpf_cookie__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c
index 1f1aade56504..77ac24b191d4 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_iter.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_iter.c
@@ -13,6 +13,7 @@
 #include "bpf_iter_tcp6.skel.h"
 #include "bpf_iter_udp4.skel.h"
 #include "bpf_iter_udp6.skel.h"
+#include "bpf_iter_unix.skel.h"
 #include "bpf_iter_test_kern1.skel.h"
 #include "bpf_iter_test_kern2.skel.h"
 #include "bpf_iter_test_kern3.skel.h"
@@ -313,6 +314,19 @@ static void test_udp6(void)
 	bpf_iter_udp6__destroy(skel);
 }
 
+static void test_unix(void)
+{
+	struct bpf_iter_unix *skel;
+
+	skel = bpf_iter_unix__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "bpf_iter_unix__open_and_load"))
+		return;
+
+	do_dummy_read(skel->progs.dump_unix);
+
+	bpf_iter_unix__destroy(skel);
+}
+
 /* The expected string is less than 16 bytes */
 static int do_read_with_fd(int iter_fd, const char *expected,
 			   bool read_one_char)
@@ -1255,6 +1269,8 @@ void test_bpf_iter(void)
 		test_udp4();
 	if (test__start_subtest("udp6"))
 		test_udp6();
+	if (test__start_subtest("unix"))
+		test_unix();
 	if (test__start_subtest("anon"))
 		test_anon_iter(false);
 	if (test__start_subtest("anon-read-one-char"))
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_iter_setsockopt.c b/tools/testing/selftests/bpf/prog_tests/bpf_iter_setsockopt.c
new file mode 100644
index 000000000000..85babb0487b3
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_iter_setsockopt.c
@@ -0,0 +1,226 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#define _GNU_SOURCE
+#include <sched.h>
+#include <test_progs.h>
+#include "network_helpers.h"
+#include "bpf_dctcp.skel.h"
+#include "bpf_cubic.skel.h"
+#include "bpf_iter_setsockopt.skel.h"
+
+static int create_netns(void)
+{
+	if (!ASSERT_OK(unshare(CLONE_NEWNET), "create netns"))
+		return -1;
+
+	if (!ASSERT_OK(system("ip link set dev lo up"), "bring up lo"))
+		return -1;
+
+	return 0;
+}
+
+static unsigned int set_bpf_cubic(int *fds, unsigned int nr_fds)
+{
+	unsigned int i;
+
+	for (i = 0; i < nr_fds; i++) {
+		if (setsockopt(fds[i], SOL_TCP, TCP_CONGESTION, "bpf_cubic",
+			       sizeof("bpf_cubic")))
+			return i;
+	}
+
+	return nr_fds;
+}
+
+static unsigned int check_bpf_dctcp(int *fds, unsigned int nr_fds)
+{
+	char tcp_cc[16];
+	socklen_t optlen = sizeof(tcp_cc);
+	unsigned int i;
+
+	for (i = 0; i < nr_fds; i++) {
+		if (getsockopt(fds[i], SOL_TCP, TCP_CONGESTION,
+			       tcp_cc, &optlen) ||
+		    strcmp(tcp_cc, "bpf_dctcp"))
+			return i;
+	}
+
+	return nr_fds;
+}
+
+static int *make_established(int listen_fd, unsigned int nr_est,
+			     int **paccepted_fds)
+{
+	int *est_fds, *accepted_fds;
+	unsigned int i;
+
+	est_fds = malloc(sizeof(*est_fds) * nr_est);
+	if (!est_fds)
+		return NULL;
+
+	accepted_fds = malloc(sizeof(*accepted_fds) * nr_est);
+	if (!accepted_fds) {
+		free(est_fds);
+		return NULL;
+	}
+
+	for (i = 0; i < nr_est; i++) {
+		est_fds[i] = connect_to_fd(listen_fd, 0);
+		if (est_fds[i] == -1)
+			break;
+		if (set_bpf_cubic(&est_fds[i], 1) != 1) {
+			close(est_fds[i]);
+			break;
+		}
+
+		accepted_fds[i] = accept(listen_fd, NULL, 0);
+		if (accepted_fds[i] == -1) {
+			close(est_fds[i]);
+			break;
+		}
+	}
+
+	if (!ASSERT_EQ(i, nr_est, "create established fds")) {
+		free_fds(accepted_fds, i);
+		free_fds(est_fds, i);
+		return NULL;
+	}
+
+	*paccepted_fds = accepted_fds;
+	return est_fds;
+}
+
+static unsigned short get_local_port(int fd)
+{
+	struct sockaddr_in6 addr;
+	socklen_t addrlen = sizeof(addr);
+
+	if (!getsockname(fd, &addr, &addrlen))
+		return ntohs(addr.sin6_port);
+
+	return 0;
+}
+
+static void do_bpf_iter_setsockopt(struct bpf_iter_setsockopt *iter_skel,
+				   bool random_retry)
+{
+	int *reuse_listen_fds = NULL, *accepted_fds = NULL, *est_fds = NULL;
+	unsigned int nr_reuse_listens = 256, nr_est = 256;
+	int err, iter_fd = -1, listen_fd = -1;
+	char buf;
+
+	/* Prepare non-reuseport listen_fd */
+	listen_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);
+	if (!ASSERT_GE(listen_fd, 0, "start_server"))
+		return;
+	if (!ASSERT_EQ(set_bpf_cubic(&listen_fd, 1), 1,
+		       "set listen_fd to cubic"))
+		goto done;
+	iter_skel->bss->listen_hport = get_local_port(listen_fd);
+	if (!ASSERT_NEQ(iter_skel->bss->listen_hport, 0,
+			"get_local_port(listen_fd)"))
+		goto done;
+
+	/* Connect to non-reuseport listen_fd */
+	est_fds = make_established(listen_fd, nr_est, &accepted_fds);
+	if (!ASSERT_OK_PTR(est_fds, "create established"))
+		goto done;
+
+	/* Prepare reuseport listen fds */
+	reuse_listen_fds = start_reuseport_server(AF_INET6, SOCK_STREAM,
+						  "::1", 0, 0,
+						  nr_reuse_listens);
+	if (!ASSERT_OK_PTR(reuse_listen_fds, "start_reuseport_server"))
+		goto done;
+	if (!ASSERT_EQ(set_bpf_cubic(reuse_listen_fds, nr_reuse_listens),
+		       nr_reuse_listens, "set reuse_listen_fds to cubic"))
+		goto done;
+	iter_skel->bss->reuse_listen_hport = get_local_port(reuse_listen_fds[0]);
+	if (!ASSERT_NEQ(iter_skel->bss->reuse_listen_hport, 0,
+			"get_local_port(reuse_listen_fds[0])"))
+		goto done;
+
+	/* Run bpf tcp iter to switch from bpf_cubic to bpf_dctcp */
+	iter_skel->bss->random_retry = random_retry;
+	iter_fd = bpf_iter_create(bpf_link__fd(iter_skel->links.change_tcp_cc));
+	if (!ASSERT_GE(iter_fd, 0, "create iter_fd"))
+		goto done;
+
+	while ((err = read(iter_fd, &buf, sizeof(buf))) == -1 &&
+	       errno == EAGAIN)
+		;
+	if (!ASSERT_OK(err, "read iter error"))
+		goto done;
+
+	/* Check reuseport listen fds for dctcp */
+	ASSERT_EQ(check_bpf_dctcp(reuse_listen_fds, nr_reuse_listens),
+		  nr_reuse_listens,
+		  "check reuse_listen_fds dctcp");
+
+	/* Check non reuseport listen fd for dctcp */
+	ASSERT_EQ(check_bpf_dctcp(&listen_fd, 1), 1,
+		  "check listen_fd dctcp");
+
+	/* Check established fds for dctcp */
+	ASSERT_EQ(check_bpf_dctcp(est_fds, nr_est), nr_est,
+		  "check est_fds dctcp");
+
+	/* Check accepted fds for dctcp */
+	ASSERT_EQ(check_bpf_dctcp(accepted_fds, nr_est), nr_est,
+		  "check accepted_fds dctcp");
+
+done:
+	if (iter_fd != -1)
+		close(iter_fd);
+	if (listen_fd != -1)
+		close(listen_fd);
+	free_fds(reuse_listen_fds, nr_reuse_listens);
+	free_fds(accepted_fds, nr_est);
+	free_fds(est_fds, nr_est);
+}
+
+void test_bpf_iter_setsockopt(void)
+{
+	struct bpf_iter_setsockopt *iter_skel = NULL;
+	struct bpf_cubic *cubic_skel = NULL;
+	struct bpf_dctcp *dctcp_skel = NULL;
+	struct bpf_link *cubic_link = NULL;
+	struct bpf_link *dctcp_link = NULL;
+
+	if (create_netns())
+		return;
+
+	/* Load iter_skel */
+	iter_skel = bpf_iter_setsockopt__open_and_load();
+	if (!ASSERT_OK_PTR(iter_skel, "iter_skel"))
+		return;
+	iter_skel->links.change_tcp_cc = bpf_program__attach_iter(iter_skel->progs.change_tcp_cc, NULL);
+	if (!ASSERT_OK_PTR(iter_skel->links.change_tcp_cc, "attach iter"))
+		goto done;
+
+	/* Load bpf_cubic */
+	cubic_skel = bpf_cubic__open_and_load();
+	if (!ASSERT_OK_PTR(cubic_skel, "cubic_skel"))
+		goto done;
+	cubic_link = bpf_map__attach_struct_ops(cubic_skel->maps.cubic);
+	if (!ASSERT_OK_PTR(cubic_link, "cubic_link"))
+		goto done;
+
+	/* Load bpf_dctcp */
+	dctcp_skel = bpf_dctcp__open_and_load();
+	if (!ASSERT_OK_PTR(dctcp_skel, "dctcp_skel"))
+		goto done;
+	dctcp_link = bpf_map__attach_struct_ops(dctcp_skel->maps.dctcp);
+	if (!ASSERT_OK_PTR(dctcp_link, "dctcp_link"))
+		goto done;
+
+	do_bpf_iter_setsockopt(iter_skel, true);
+	do_bpf_iter_setsockopt(iter_skel, false);
+
+done:
+	bpf_link__destroy(cubic_link);
+	bpf_link__destroy(dctcp_link);
+	bpf_cubic__destroy(cubic_skel);
+	bpf_dctcp__destroy(dctcp_skel);
+	bpf_iter_setsockopt__destroy(iter_skel);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
index efe1e979affb..94e03df69d71 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_tcp_ca.c
@@ -4,37 +4,22 @@
 #include <linux/err.h>
 #include <netinet/tcp.h>
 #include <test_progs.h>
+#include "network_helpers.h"
 #include "bpf_dctcp.skel.h"
 #include "bpf_cubic.skel.h"
 #include "bpf_tcp_nogpl.skel.h"
+#include "bpf_dctcp_release.skel.h"
 
 #define min(a, b) ((a) < (b) ? (a) : (b))
 
+#ifndef ENOTSUPP
+#define ENOTSUPP 524
+#endif
+
 static const unsigned int total_bytes = 10 * 1024 * 1024;
-static const struct timeval timeo_sec = { .tv_sec = 10 };
-static const size_t timeo_optlen = sizeof(timeo_sec);
 static int expected_stg = 0xeB9F;
 static int stop, duration;
 
-static int settimeo(int fd)
-{
-	int err;
-
-	err = setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, &timeo_sec,
-			 timeo_optlen);
-	if (CHECK(err == -1, "setsockopt(fd, SO_RCVTIMEO)", "errno:%d\n",
-		  errno))
-		return -1;
-
-	err = setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, &timeo_sec,
-			 timeo_optlen);
-	if (CHECK(err == -1, "setsockopt(fd, SO_SNDTIMEO)", "errno:%d\n",
-		  errno))
-		return -1;
-
-	return 0;
-}
-
 static int settcpca(int fd, const char *tcp_ca)
 {
 	int err;
@@ -61,7 +46,7 @@ static void *server(void *arg)
 		goto done;
 	}
 
-	if (settimeo(fd)) {
+	if (settimeo(fd, 0)) {
 		err = -errno;
 		goto done;
 	}
@@ -114,7 +99,7 @@ static void do_test(const char *tcp_ca, const struct bpf_map *sk_stg_map)
 	}
 
 	if (settcpca(lfd, tcp_ca) || settcpca(fd, tcp_ca) ||
-	    settimeo(lfd) || settimeo(fd))
+	    settimeo(lfd, 0) || settimeo(fd, 0))
 		goto done;
 
 	/* bind, listen and start server thread to accept */
@@ -267,6 +252,77 @@ static void test_invalid_license(void)
 	libbpf_set_print(old_print_fn);
 }
 
+static void test_dctcp_fallback(void)
+{
+	int err, lfd = -1, cli_fd = -1, srv_fd = -1;
+	struct network_helper_opts opts = {
+		.cc = "cubic",
+	};
+	struct bpf_dctcp *dctcp_skel;
+	struct bpf_link *link = NULL;
+	char srv_cc[16];
+	socklen_t cc_len = sizeof(srv_cc);
+
+	dctcp_skel = bpf_dctcp__open();
+	if (!ASSERT_OK_PTR(dctcp_skel, "dctcp_skel"))
+		return;
+	strcpy(dctcp_skel->rodata->fallback, "cubic");
+	if (!ASSERT_OK(bpf_dctcp__load(dctcp_skel), "bpf_dctcp__load"))
+		goto done;
+
+	link = bpf_map__attach_struct_ops(dctcp_skel->maps.dctcp);
+	if (!ASSERT_OK_PTR(link, "dctcp link"))
+		goto done;
+
+	lfd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);
+	if (!ASSERT_GE(lfd, 0, "lfd") ||
+	    !ASSERT_OK(settcpca(lfd, "bpf_dctcp"), "lfd=>bpf_dctcp"))
+		goto done;
+
+	cli_fd = connect_to_fd_opts(lfd, &opts);
+	if (!ASSERT_GE(cli_fd, 0, "cli_fd"))
+		goto done;
+
+	srv_fd = accept(lfd, NULL, 0);
+	if (!ASSERT_GE(srv_fd, 0, "srv_fd"))
+		goto done;
+	ASSERT_STREQ(dctcp_skel->bss->cc_res, "cubic", "cc_res");
+	ASSERT_EQ(dctcp_skel->bss->tcp_cdg_res, -ENOTSUPP, "tcp_cdg_res");
+
+	err = getsockopt(srv_fd, SOL_TCP, TCP_CONGESTION, srv_cc, &cc_len);
+	if (!ASSERT_OK(err, "getsockopt(srv_fd, TCP_CONGESTION)"))
+		goto done;
+	ASSERT_STREQ(srv_cc, "cubic", "srv_fd cc");
+
+done:
+	bpf_link__destroy(link);
+	bpf_dctcp__destroy(dctcp_skel);
+	if (lfd != -1)
+		close(lfd);
+	if (srv_fd != -1)
+		close(srv_fd);
+	if (cli_fd != -1)
+		close(cli_fd);
+}
+
+static void test_rel_setsockopt(void)
+{
+	struct bpf_dctcp_release *rel_skel;
+	libbpf_print_fn_t old_print_fn;
+
+	err_str = "unknown func bpf_setsockopt";
+	found = false;
+
+	old_print_fn = libbpf_set_print(libbpf_debug_print);
+	rel_skel = bpf_dctcp_release__open_and_load();
+	libbpf_set_print(old_print_fn);
+
+	ASSERT_ERR_PTR(rel_skel, "rel_skel");
+	ASSERT_TRUE(found, "expected_err_msg");
+
+	bpf_dctcp_release__destroy(rel_skel);
+}
+
 void test_bpf_tcp_ca(void)
 {
 	if (test__start_subtest("dctcp"))
@@ -275,4 +331,8 @@ void test_bpf_tcp_ca(void)
 		test_cubic();
 	if (test__start_subtest("invalid_license"))
 		test_invalid_license();
+	if (test__start_subtest("dctcp_fallback"))
+		test_dctcp_fallback();
+	if (test__start_subtest("rel_setsockopt"))
+		test_rel_setsockopt();
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/btf.c b/tools/testing/selftests/bpf/prog_tests/btf.c
index 857e3f26086f..649f87382c8d 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf.c
@@ -4350,7 +4350,8 @@ static void do_test_file(unsigned int test_num)
 		goto done;
 	}
 
-	err = btf__get_from_id(info.btf_id, &btf);
+	btf = btf__load_from_kernel_by_id(info.btf_id);
+	err = libbpf_get_error(btf);
 	if (CHECK(err, "cannot get btf from kernel, err: %d", err))
 		goto done;
 
@@ -4386,6 +4387,7 @@ skip:
 	fprintf(stderr, "OK");
 
 done:
+	btf__free(btf);
 	free(func_info);
 	bpf_object__close(obj);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_dump.c b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
index 1b90e684ff13..52ccf0cf35e1 100644
--- a/tools/testing/selftests/bpf/prog_tests/btf_dump.c
+++ b/tools/testing/selftests/bpf/prog_tests/btf_dump.c
@@ -232,7 +232,593 @@ err_out:
 	btf__free(btf);
 }
 
+#define STRSIZE				4096
+
+static void btf_dump_snprintf(void *ctx, const char *fmt, va_list args)
+{
+	char *s = ctx, new[STRSIZE];
+
+	vsnprintf(new, STRSIZE, fmt, args);
+	if (strlen(s) < STRSIZE)
+		strncat(s, new, STRSIZE - strlen(s) - 1);
+}
+
+static int btf_dump_data(struct btf *btf, struct btf_dump *d,
+			 char *name, char *prefix, __u64 flags, void *ptr,
+			 size_t ptr_sz, char *str, const char *expected_val)
+{
+	DECLARE_LIBBPF_OPTS(btf_dump_type_data_opts, opts);
+	size_t type_sz;
+	__s32 type_id;
+	int ret = 0;
+
+	if (flags & BTF_F_COMPACT)
+		opts.compact = true;
+	if (flags & BTF_F_NONAME)
+		opts.skip_names = true;
+	if (flags & BTF_F_ZERO)
+		opts.emit_zeroes = true;
+	if (prefix) {
+		ASSERT_STRNEQ(name, prefix, strlen(prefix),
+			      "verify prefix match");
+		name += strlen(prefix) + 1;
+	}
+	type_id = btf__find_by_name(btf, name);
+	if (!ASSERT_GE(type_id, 0, "find type id"))
+		return -ENOENT;
+	type_sz = btf__resolve_size(btf, type_id);
+	str[0] = '\0';
+	ret = btf_dump__dump_type_data(d, type_id, ptr, ptr_sz, &opts);
+	if (type_sz <= ptr_sz) {
+		if (!ASSERT_EQ(ret, type_sz, "failed/unexpected type_sz"))
+			return -EINVAL;
+	} else {
+		if (!ASSERT_EQ(ret, -E2BIG, "failed to return -E2BIG"))
+			return -EINVAL;
+	}
+	if (!ASSERT_STREQ(str, expected_val, "ensure expected/actual match"))
+		return -EFAULT;
+	return 0;
+}
+
+#define TEST_BTF_DUMP_DATA(_b, _d, _prefix, _str, _type, _flags,	\
+			   _expected, ...)				\
+	do {								\
+		char __ptrtype[64] = #_type;				\
+		char *_ptrtype = (char *)__ptrtype;			\
+		_type _ptrdata = __VA_ARGS__;				\
+		void *_ptr = &_ptrdata;					\
+									\
+		(void) btf_dump_data(_b, _d, _ptrtype, _prefix, _flags,	\
+				     _ptr, sizeof(_type), _str,		\
+				     _expected);			\
+	} while (0)
+
+/* Use where expected data string matches its stringified declaration */
+#define TEST_BTF_DUMP_DATA_C(_b, _d, _prefix,  _str, _type, _flags,	\
+			     ...)					\
+	TEST_BTF_DUMP_DATA(_b, _d, _prefix, _str, _type, _flags,	\
+			   "(" #_type ")" #__VA_ARGS__,	__VA_ARGS__)
+
+/* overflow test; pass typesize < expected type size, ensure E2BIG returned */
+#define TEST_BTF_DUMP_DATA_OVER(_b, _d, _prefix, _str, _type, _type_sz,	\
+				_expected, ...)				\
+	do {								\
+		char __ptrtype[64] = #_type;				\
+		char *_ptrtype = (char *)__ptrtype;			\
+		_type _ptrdata = __VA_ARGS__;				\
+		void *_ptr = &_ptrdata;					\
+									\
+		(void) btf_dump_data(_b, _d, _ptrtype, _prefix, 0,	\
+				     _ptr, _type_sz, _str, _expected);	\
+	} while (0)
+
+#define TEST_BTF_DUMP_VAR(_b, _d, _prefix, _str, _var, _type, _flags,	\
+			  _expected, ...)				\
+	do {								\
+		_type _ptrdata = __VA_ARGS__;				\
+		void *_ptr = &_ptrdata;					\
+									\
+		(void) btf_dump_data(_b, _d, _var, _prefix, _flags,	\
+				     _ptr, sizeof(_type), _str,		\
+				     _expected);			\
+	} while (0)
+
+static void test_btf_dump_int_data(struct btf *btf, struct btf_dump *d,
+				   char *str)
+{
+#ifdef __SIZEOF_INT128__
+	__int128 i = 0xffffffffffffffff;
+
+	/* this dance is required because we cannot directly initialize
+	 * a 128-bit value to anything larger than a 64-bit value.
+	 */
+	i = (i << 64) | (i - 1);
+#endif
+	/* simple int */
+	TEST_BTF_DUMP_DATA_C(btf, d, NULL, str, int, BTF_F_COMPACT, 1234);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, int, BTF_F_COMPACT | BTF_F_NONAME,
+			   "1234", 1234);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, int, 0, "(int)1234", 1234);
+
+	/* zero value should be printed at toplevel */
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, int, BTF_F_COMPACT, "(int)0", 0);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, int, BTF_F_COMPACT | BTF_F_NONAME,
+			   "0", 0);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, int, BTF_F_COMPACT | BTF_F_ZERO,
+			   "(int)0", 0);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, int,
+			   BTF_F_COMPACT | BTF_F_NONAME | BTF_F_ZERO,
+			   "0", 0);
+	TEST_BTF_DUMP_DATA_C(btf, d, NULL, str, int, BTF_F_COMPACT, -4567);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, int, BTF_F_COMPACT | BTF_F_NONAME,
+			   "-4567", -4567);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, int, 0, "(int)-4567", -4567);
+
+	TEST_BTF_DUMP_DATA_OVER(btf, d, NULL, str, int, sizeof(int)-1, "", 1);
+
+#ifdef __SIZEOF_INT128__
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, __int128, BTF_F_COMPACT,
+			   "(__int128)0xffffffffffffffff",
+			   0xffffffffffffffff);
+	ASSERT_OK(btf_dump_data(btf, d, "__int128", NULL, 0, &i, 16, str,
+				"(__int128)0xfffffffffffffffffffffffffffffffe"),
+		  "dump __int128");
+#endif
+}
+
+static void test_btf_dump_float_data(struct btf *btf, struct btf_dump *d,
+				     char *str)
+{
+	float t1 = 1.234567;
+	float t2 = -1.234567;
+	float t3 = 0.0;
+	double t4 = 5.678912;
+	double t5 = -5.678912;
+	double t6 = 0.0;
+	long double t7 = 9.876543;
+	long double t8 = -9.876543;
+	long double t9 = 0.0;
+
+	/* since the kernel does not likely have any float types in its BTF, we
+	 * will need to add some of various sizes.
+	 */
+
+	ASSERT_GT(btf__add_float(btf, "test_float", 4), 0, "add float");
+	ASSERT_OK(btf_dump_data(btf, d, "test_float", NULL, 0, &t1, 4, str,
+				"(test_float)1.234567"), "dump float");
+	ASSERT_OK(btf_dump_data(btf, d, "test_float", NULL, 0, &t2, 4, str,
+				"(test_float)-1.234567"), "dump float");
+	ASSERT_OK(btf_dump_data(btf, d, "test_float", NULL, 0, &t3, 4, str,
+				"(test_float)0.000000"), "dump float");
+
+	ASSERT_GT(btf__add_float(btf, "test_double", 8), 0, "add_double");
+	ASSERT_OK(btf_dump_data(btf, d, "test_double", NULL, 0, &t4, 8, str,
+		  "(test_double)5.678912"), "dump double");
+	ASSERT_OK(btf_dump_data(btf, d, "test_double", NULL, 0, &t5, 8, str,
+		  "(test_double)-5.678912"), "dump double");
+	ASSERT_OK(btf_dump_data(btf, d, "test_double", NULL, 0, &t6, 8, str,
+				"(test_double)0.000000"), "dump double");
+
+	ASSERT_GT(btf__add_float(btf, "test_long_double", 16), 0, "add long double");
+	ASSERT_OK(btf_dump_data(btf, d, "test_long_double", NULL, 0, &t7, 16,
+				str, "(test_long_double)9.876543"),
+				"dump long_double");
+	ASSERT_OK(btf_dump_data(btf, d, "test_long_double", NULL, 0, &t8, 16,
+				str, "(test_long_double)-9.876543"),
+				"dump long_double");
+	ASSERT_OK(btf_dump_data(btf, d, "test_long_double", NULL, 0, &t9, 16,
+				str, "(test_long_double)0.000000"),
+				"dump long_double");
+}
+
+static void test_btf_dump_char_data(struct btf *btf, struct btf_dump *d,
+				    char *str)
+{
+	/* simple char */
+	TEST_BTF_DUMP_DATA_C(btf, d, NULL, str, char, BTF_F_COMPACT, 100);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, char, BTF_F_COMPACT | BTF_F_NONAME,
+			   "100", 100);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, char, 0, "(char)100", 100);
+	/* zero value should be printed at toplevel */
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, char, BTF_F_COMPACT,
+			   "(char)0", 0);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, char, BTF_F_COMPACT | BTF_F_NONAME,
+			   "0", 0);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, char, BTF_F_COMPACT | BTF_F_ZERO,
+			   "(char)0", 0);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, char, BTF_F_COMPACT | BTF_F_NONAME | BTF_F_ZERO,
+			   "0", 0);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, char, 0, "(char)0", 0);
+
+	TEST_BTF_DUMP_DATA_OVER(btf, d, NULL, str, char, sizeof(char)-1, "", 100);
+}
+
+static void test_btf_dump_typedef_data(struct btf *btf, struct btf_dump *d,
+				       char *str)
+{
+	/* simple typedef */
+	TEST_BTF_DUMP_DATA_C(btf, d, NULL, str, uint64_t, BTF_F_COMPACT, 100);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, u64, BTF_F_COMPACT | BTF_F_NONAME,
+			   "1", 1);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, u64, 0, "(u64)1", 1);
+	/* zero value should be printed at toplevel */
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, u64, BTF_F_COMPACT, "(u64)0", 0);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, u64, BTF_F_COMPACT | BTF_F_NONAME,
+			   "0", 0);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, u64, BTF_F_COMPACT | BTF_F_ZERO,
+			   "(u64)0", 0);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, u64,
+			   BTF_F_COMPACT | BTF_F_NONAME | BTF_F_ZERO,
+			   "0", 0);
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, u64, 0, "(u64)0", 0);
+
+	/* typedef struct */
+	TEST_BTF_DUMP_DATA_C(btf, d, NULL, str, atomic_t, BTF_F_COMPACT,
+			     {.counter = (int)1,});
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, atomic_t, BTF_F_COMPACT | BTF_F_NONAME,
+			   "{1,}", { .counter = 1 });
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, atomic_t, 0,
+"(atomic_t){\n"
+"	.counter = (int)1,\n"
+"}",
+			   {.counter = 1,});
+	/* typedef with 0 value should be printed at toplevel */
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, atomic_t, BTF_F_COMPACT, "(atomic_t){}",
+			   {.counter = 0,});
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, atomic_t, BTF_F_COMPACT | BTF_F_NONAME,
+			   "{}", {.counter = 0,});
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, atomic_t, 0,
+"(atomic_t){\n"
+"}",
+			   {.counter = 0,});
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, atomic_t, BTF_F_COMPACT | BTF_F_ZERO,
+			   "(atomic_t){.counter = (int)0,}",
+			   {.counter = 0,});
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, atomic_t,
+			   BTF_F_COMPACT | BTF_F_NONAME | BTF_F_ZERO,
+			   "{0,}", {.counter = 0,});
+	TEST_BTF_DUMP_DATA(btf, d, NULL, str, atomic_t, BTF_F_ZERO,
+"(atomic_t){\n"
+"	.counter = (int)0,\n"
+"}",
+			   { .counter = 0,});
+
+	/* overflow should show type but not value since it overflows */
+	TEST_BTF_DUMP_DATA_OVER(btf, d, NULL, str, atomic_t, sizeof(atomic_t)-1,
+				"(atomic_t){\n", { .counter = 1});
+}
+
+static void test_btf_dump_enum_data(struct btf *btf, struct btf_dump *d,
+				    char *str)
+{
+	/* enum where enum value does (and does not) exist */
+	TEST_BTF_DUMP_DATA_C(btf, d, "enum", str, enum bpf_cmd, BTF_F_COMPACT,
+			     BPF_MAP_CREATE);
+	TEST_BTF_DUMP_DATA(btf, d, "enum", str, enum bpf_cmd, BTF_F_COMPACT,
+			   "(enum bpf_cmd)BPF_MAP_CREATE", 0);
+	TEST_BTF_DUMP_DATA(btf, d, "enum", str, enum bpf_cmd,
+			   BTF_F_COMPACT | BTF_F_NONAME,
+			   "BPF_MAP_CREATE",
+			   BPF_MAP_CREATE);
+	TEST_BTF_DUMP_DATA(btf, d, "enum", str, enum bpf_cmd, 0,
+			   "(enum bpf_cmd)BPF_MAP_CREATE",
+			   BPF_MAP_CREATE);
+	TEST_BTF_DUMP_DATA(btf, d, "enum", str, enum bpf_cmd,
+			   BTF_F_COMPACT | BTF_F_NONAME | BTF_F_ZERO,
+			   "BPF_MAP_CREATE", 0);
+	TEST_BTF_DUMP_DATA(btf, d, "enum", str, enum bpf_cmd,
+			   BTF_F_COMPACT | BTF_F_ZERO,
+			   "(enum bpf_cmd)BPF_MAP_CREATE",
+			   BPF_MAP_CREATE);
+	TEST_BTF_DUMP_DATA(btf, d, "enum", str, enum bpf_cmd,
+			   BTF_F_COMPACT | BTF_F_NONAME | BTF_F_ZERO,
+			   "BPF_MAP_CREATE", BPF_MAP_CREATE);
+	TEST_BTF_DUMP_DATA_C(btf, d, "enum", str, enum bpf_cmd, BTF_F_COMPACT, 2000);
+	TEST_BTF_DUMP_DATA(btf, d, "enum", str, enum bpf_cmd,
+			   BTF_F_COMPACT | BTF_F_NONAME,
+			   "2000", 2000);
+	TEST_BTF_DUMP_DATA(btf, d, "enum", str, enum bpf_cmd, 0,
+			   "(enum bpf_cmd)2000", 2000);
+
+	TEST_BTF_DUMP_DATA_OVER(btf, d, "enum", str, enum bpf_cmd,
+				sizeof(enum bpf_cmd) - 1, "", BPF_MAP_CREATE);
+}
+
+static void test_btf_dump_struct_data(struct btf *btf, struct btf_dump *d,
+				      char *str)
+{
+	DECLARE_LIBBPF_OPTS(btf_dump_type_data_opts, opts);
+	char zero_data[512] = { };
+	char type_data[512];
+	void *fops = type_data;
+	void *skb = type_data;
+	size_t type_sz;
+	__s32 type_id;
+	char *cmpstr;
+	int ret;
+
+	memset(type_data, 255, sizeof(type_data));
+
+	/* simple struct */
+	TEST_BTF_DUMP_DATA_C(btf, d, "struct", str, struct btf_enum, BTF_F_COMPACT,
+			     {.name_off = (__u32)3,.val = (__s32)-1,});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct btf_enum,
+			   BTF_F_COMPACT | BTF_F_NONAME,
+			   "{3,-1,}",
+			   { .name_off = 3, .val = -1,});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct btf_enum, 0,
+"(struct btf_enum){\n"
+"	.name_off = (__u32)3,\n"
+"	.val = (__s32)-1,\n"
+"}",
+			   { .name_off = 3, .val = -1,});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct btf_enum,
+			   BTF_F_COMPACT | BTF_F_NONAME,
+			   "{-1,}",
+			   { .name_off = 0, .val = -1,});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct btf_enum,
+			   BTF_F_COMPACT | BTF_F_NONAME | BTF_F_ZERO,
+			   "{0,-1,}",
+			   { .name_off = 0, .val = -1,});
+	/* empty struct should be printed */
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct btf_enum, BTF_F_COMPACT,
+			   "(struct btf_enum){}",
+			   { .name_off = 0, .val = 0,});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct btf_enum,
+			   BTF_F_COMPACT | BTF_F_NONAME,
+			   "{}",
+			   { .name_off = 0, .val = 0,});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct btf_enum, 0,
+"(struct btf_enum){\n"
+"}",
+			   { .name_off = 0, .val = 0,});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct btf_enum,
+			   BTF_F_COMPACT | BTF_F_ZERO,
+			   "(struct btf_enum){.name_off = (__u32)0,.val = (__s32)0,}",
+			   { .name_off = 0, .val = 0,});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct btf_enum,
+			   BTF_F_ZERO,
+"(struct btf_enum){\n"
+"	.name_off = (__u32)0,\n"
+"	.val = (__s32)0,\n"
+"}",
+			   { .name_off = 0, .val = 0,});
+
+	/* struct with pointers */
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct list_head, BTF_F_COMPACT,
+			   "(struct list_head){.next = (struct list_head *)0x1,}",
+			   { .next = (struct list_head *)1 });
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct list_head, 0,
+"(struct list_head){\n"
+"	.next = (struct list_head *)0x1,\n"
+"}",
+			   { .next = (struct list_head *)1 });
+	/* NULL pointer should not be displayed */
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct list_head, BTF_F_COMPACT,
+			   "(struct list_head){}",
+			   { .next = (struct list_head *)0 });
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct list_head, 0,
+"(struct list_head){\n"
+"}",
+			   { .next = (struct list_head *)0 });
+
+	/* struct with function pointers */
+	type_id = btf__find_by_name(btf, "file_operations");
+	if (ASSERT_GT(type_id, 0, "find type id")) {
+		type_sz = btf__resolve_size(btf, type_id);
+		str[0] = '\0';
+
+		ret = btf_dump__dump_type_data(d, type_id, fops, type_sz, &opts);
+		ASSERT_EQ(ret, type_sz,
+			  "unexpected return value dumping file_operations");
+		cmpstr =
+"(struct file_operations){\n"
+"	.owner = (struct module *)0xffffffffffffffff,\n"
+"	.llseek = (loff_t (*)(struct file *, loff_t, int))0xffffffffffffffff,";
+
+		ASSERT_STRNEQ(str, cmpstr, strlen(cmpstr), "file_operations");
+	}
+
+	/* struct with char array */
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct bpf_prog_info, BTF_F_COMPACT,
+			   "(struct bpf_prog_info){.name = (char[16])['f','o','o',],}",
+			   { .name = "foo",});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct bpf_prog_info,
+			   BTF_F_COMPACT | BTF_F_NONAME,
+			   "{['f','o','o',],}",
+			   {.name = "foo",});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct bpf_prog_info, 0,
+"(struct bpf_prog_info){\n"
+"	.name = (char[16])[\n"
+"		'f',\n"
+"		'o',\n"
+"		'o',\n"
+"	],\n"
+"}",
+			   {.name = "foo",});
+	/* leading null char means do not display string */
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct bpf_prog_info, BTF_F_COMPACT,
+			   "(struct bpf_prog_info){}",
+			   {.name = {'\0', 'f', 'o', 'o'}});
+	/* handle non-printable characters */
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct bpf_prog_info, BTF_F_COMPACT,
+			   "(struct bpf_prog_info){.name = (char[16])[1,2,3,],}",
+			   { .name = {1, 2, 3, 0}});
+
+	/* struct with non-char array */
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct __sk_buff, BTF_F_COMPACT,
+			   "(struct __sk_buff){.cb = (__u32[5])[1,2,3,4,5,],}",
+			   { .cb = {1, 2, 3, 4, 5,},});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct __sk_buff,
+			   BTF_F_COMPACT | BTF_F_NONAME,
+			   "{[1,2,3,4,5,],}",
+			   { .cb = { 1, 2, 3, 4, 5},});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct __sk_buff, 0,
+"(struct __sk_buff){\n"
+"	.cb = (__u32[5])[\n"
+"		1,\n"
+"		2,\n"
+"		3,\n"
+"		4,\n"
+"		5,\n"
+"	],\n"
+"}",
+			   { .cb = { 1, 2, 3, 4, 5},});
+	/* For non-char, arrays, show non-zero values only */
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct __sk_buff, BTF_F_COMPACT,
+			   "(struct __sk_buff){.cb = (__u32[5])[0,0,1,0,0,],}",
+			   { .cb = { 0, 0, 1, 0, 0},});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct __sk_buff, 0,
+"(struct __sk_buff){\n"
+"	.cb = (__u32[5])[\n"
+"		0,\n"
+"		0,\n"
+"		1,\n"
+"		0,\n"
+"		0,\n"
+"	],\n"
+"}",
+			   { .cb = { 0, 0, 1, 0, 0},});
+
+	/* struct with bitfields */
+	TEST_BTF_DUMP_DATA_C(btf, d, "struct", str, struct bpf_insn, BTF_F_COMPACT,
+		{.code = (__u8)1,.dst_reg = (__u8)0x2,.src_reg = (__u8)0x3,.off = (__s16)4,.imm = (__s32)5,});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct bpf_insn,
+			   BTF_F_COMPACT | BTF_F_NONAME,
+			   "{1,0x2,0x3,4,5,}",
+			   { .code = 1, .dst_reg = 0x2, .src_reg = 0x3, .off = 4,
+			     .imm = 5,});
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct bpf_insn, 0,
+"(struct bpf_insn){\n"
+"	.code = (__u8)1,\n"
+"	.dst_reg = (__u8)0x2,\n"
+"	.src_reg = (__u8)0x3,\n"
+"	.off = (__s16)4,\n"
+"	.imm = (__s32)5,\n"
+"}",
+			   {.code = 1, .dst_reg = 2, .src_reg = 3, .off = 4, .imm = 5});
+
+	/* zeroed bitfields should not be displayed */
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct bpf_insn, BTF_F_COMPACT,
+			   "(struct bpf_insn){.dst_reg = (__u8)0x1,}",
+			   { .code = 0, .dst_reg = 1});
+
+	/* struct with enum bitfield */
+	type_id = btf__find_by_name(btf, "fs_context");
+	if (ASSERT_GT(type_id,  0, "find fs_context")) {
+		type_sz = btf__resolve_size(btf, type_id);
+		str[0] = '\0';
+
+		opts.emit_zeroes = true;
+		ret = btf_dump__dump_type_data(d, type_id, zero_data, type_sz, &opts);
+		ASSERT_EQ(ret, type_sz,
+			  "unexpected return value dumping fs_context");
+
+		ASSERT_NEQ(strstr(str, "FS_CONTEXT_FOR_MOUNT"), NULL,
+				  "bitfield value not present");
+	}
+
+	/* struct with nested anon union */
+	TEST_BTF_DUMP_DATA(btf, d, "struct", str, struct bpf_sock_ops, BTF_F_COMPACT,
+			   "(struct bpf_sock_ops){.op = (__u32)1,(union){.args = (__u32[4])[1,2,3,4,],.reply = (__u32)1,.replylong = (__u32[4])[1,2,3,4,],},}",
+			   { .op = 1, .args = { 1, 2, 3, 4}});
+
+	/* union with nested struct */
+	TEST_BTF_DUMP_DATA(btf, d, "union", str, union bpf_iter_link_info, BTF_F_COMPACT,
+			   "(union bpf_iter_link_info){.map = (struct){.map_fd = (__u32)1,},}",
+			   { .map = { .map_fd = 1 }});
+
+	/* struct skb with nested structs/unions; because type output is so
+	 * complex, we don't do a string comparison, just verify we return
+	 * the type size as the amount of data displayed.
+	 */
+	type_id = btf__find_by_name(btf, "sk_buff");
+	if (ASSERT_GT(type_id, 0, "find struct sk_buff")) {
+		type_sz = btf__resolve_size(btf, type_id);
+		str[0] = '\0';
+
+		ret = btf_dump__dump_type_data(d, type_id, skb, type_sz, &opts);
+		ASSERT_EQ(ret, type_sz,
+			  "unexpected return value dumping sk_buff");
+	}
+
+	/* overflow bpf_sock_ops struct with final element nonzero/zero.
+	 * Regardless of the value of the final field, we don't have all the
+	 * data we need to display it, so we should trigger an overflow.
+	 * In other words oveflow checking should trump "is field zero?"
+	 * checks because if we've overflowed, it shouldn't matter what the
+	 * field is - we can't trust its value so shouldn't display it.
+	 */
+	TEST_BTF_DUMP_DATA_OVER(btf, d, "struct", str, struct bpf_sock_ops,
+				sizeof(struct bpf_sock_ops) - 1,
+				"(struct bpf_sock_ops){\n\t.op = (__u32)1,\n",
+				{ .op = 1, .skb_tcp_flags = 2});
+	TEST_BTF_DUMP_DATA_OVER(btf, d, "struct", str, struct bpf_sock_ops,
+				sizeof(struct bpf_sock_ops) - 1,
+				"(struct bpf_sock_ops){\n\t.op = (__u32)1,\n",
+				{ .op = 1, .skb_tcp_flags = 0});
+}
+
+static void test_btf_dump_var_data(struct btf *btf, struct btf_dump *d,
+				   char *str)
+{
+	TEST_BTF_DUMP_VAR(btf, d, NULL, str, "cpu_number", int, BTF_F_COMPACT,
+			  "int cpu_number = (int)100", 100);
+	TEST_BTF_DUMP_VAR(btf, d, NULL, str, "cpu_profile_flip", int, BTF_F_COMPACT,
+			  "static int cpu_profile_flip = (int)2", 2);
+}
+
+static void test_btf_datasec(struct btf *btf, struct btf_dump *d, char *str,
+			     const char *name, const char *expected_val,
+			     void *data, size_t data_sz)
+{
+	DECLARE_LIBBPF_OPTS(btf_dump_type_data_opts, opts);
+	int ret = 0, cmp;
+	size_t secsize;
+	__s32 type_id;
+
+	opts.compact = true;
+
+	type_id = btf__find_by_name(btf, name);
+	if (!ASSERT_GT(type_id, 0, "find type id"))
+		return;
+
+	secsize = btf__resolve_size(btf, type_id);
+	ASSERT_EQ(secsize,  0, "verify section size");
+
+	str[0] = '\0';
+	ret = btf_dump__dump_type_data(d, type_id, data, data_sz, &opts);
+	ASSERT_EQ(ret, 0, "unexpected return value");
+
+	cmp = strcmp(str, expected_val);
+	ASSERT_EQ(cmp, 0, "ensure expected/actual match");
+}
+
+static void test_btf_dump_datasec_data(char *str)
+{
+	struct btf *btf = btf__parse("xdping_kern.o", NULL);
+	struct btf_dump_opts opts = { .ctx = str };
+	char license[4] = "GPL";
+	struct btf_dump *d;
+
+	if (!ASSERT_OK_PTR(btf, "xdping_kern.o BTF not found"))
+		return;
+
+	d = btf_dump__new(btf, NULL, &opts, btf_dump_snprintf);
+	if (!ASSERT_OK_PTR(d, "could not create BTF dump"))
+		return;
+
+	test_btf_datasec(btf, d, str, "license",
+			 "SEC(\"license\") char[4] _license = (char[4])['G','P','L',];",
+			 license, sizeof(license));
+}
+
 void test_btf_dump() {
+	char str[STRSIZE];
+	struct btf_dump_opts opts = { .ctx = str };
+	struct btf_dump *d;
+	struct btf *btf;
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(btf_dump_test_cases); i++) {
@@ -245,4 +831,33 @@ void test_btf_dump() {
 	}
 	if (test__start_subtest("btf_dump: incremental"))
 		test_btf_dump_incremental();
+
+	btf = libbpf_find_kernel_btf();
+	if (!ASSERT_OK_PTR(btf, "no kernel BTF found"))
+		return;
+
+	d = btf_dump__new(btf, NULL, &opts, btf_dump_snprintf);
+	if (!ASSERT_OK_PTR(d, "could not create BTF dump"))
+		return;
+
+	/* Verify type display for various types. */
+	if (test__start_subtest("btf_dump: int_data"))
+		test_btf_dump_int_data(btf, d, str);
+	if (test__start_subtest("btf_dump: float_data"))
+		test_btf_dump_float_data(btf, d, str);
+	if (test__start_subtest("btf_dump: char_data"))
+		test_btf_dump_char_data(btf, d, str);
+	if (test__start_subtest("btf_dump: typedef_data"))
+		test_btf_dump_typedef_data(btf, d, str);
+	if (test__start_subtest("btf_dump: enum_data"))
+		test_btf_dump_enum_data(btf, d, str);
+	if (test__start_subtest("btf_dump: struct_data"))
+		test_btf_dump_struct_data(btf, d, str);
+	if (test__start_subtest("btf_dump: var_data"))
+		test_btf_dump_var_data(btf, d, str);
+	btf_dump__free(d);
+	btf__free(btf);
+
+	if (test__start_subtest("btf_dump: datasec_data"))
+		test_btf_dump_datasec_data(str);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/btf_module.c b/tools/testing/selftests/bpf/prog_tests/btf_module.c
new file mode 100644
index 000000000000..2239d1fe0332
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/btf_module.c
@@ -0,0 +1,34 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (c) 2021 Hengqi Chen */
+
+#include <test_progs.h>
+#include <bpf/btf.h>
+
+static const char *module_name = "bpf_testmod";
+static const char *symbol_name = "bpf_testmod_test_read";
+
+void test_btf_module()
+{
+	struct btf *vmlinux_btf, *module_btf;
+	__s32 type_id;
+
+	if (!env.has_testmod) {
+		test__skip();
+		return;
+	}
+
+	vmlinux_btf = btf__load_vmlinux_btf();
+	if (!ASSERT_OK_PTR(vmlinux_btf, "could not load vmlinux BTF"))
+		return;
+
+	module_btf = btf__load_module_btf(module_name, vmlinux_btf);
+	if (!ASSERT_OK_PTR(module_btf, "could not load module BTF"))
+		goto cleanup;
+
+	type_id = btf__find_by_name(module_btf, symbol_name);
+	ASSERT_GT(type_id, 0, "func not found");
+
+cleanup:
+	btf__free(module_btf);
+	btf__free(vmlinux_btf);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/core_autosize.c b/tools/testing/selftests/bpf/prog_tests/core_autosize.c
index 981c251453d9..3d4b2a358d47 100644
--- a/tools/testing/selftests/bpf/prog_tests/core_autosize.c
+++ b/tools/testing/selftests/bpf/prog_tests/core_autosize.c
@@ -53,8 +53,8 @@ void test_core_autosize(void)
 	char btf_file[] = "/tmp/core_autosize.btf.XXXXXX";
 	int err, fd = -1, zero = 0;
 	int char_id, short_id, int_id, long_long_id, void_ptr_id, id;
+	DECLARE_LIBBPF_OPTS(bpf_object_open_opts, open_opts);
 	struct test_core_autosize* skel = NULL;
-	struct bpf_object_load_attr load_attr = {};
 	struct bpf_program *prog;
 	struct bpf_map *bss_map;
 	struct btf *btf = NULL;
@@ -125,9 +125,10 @@ void test_core_autosize(void)
 	fd = -1;
 
 	/* open and load BPF program with custom BTF as the kernel BTF */
-	skel = test_core_autosize__open();
+	open_opts.btf_custom_path = btf_file;
+	skel = test_core_autosize__open_opts(&open_opts);
 	if (!ASSERT_OK_PTR(skel, "skel_open"))
-		return;
+		goto cleanup;
 
 	/* disable handle_signed() for now */
 	prog = bpf_object__find_program_by_name(skel->obj, "handle_signed");
@@ -135,9 +136,7 @@ void test_core_autosize(void)
 		goto cleanup;
 	bpf_program__set_autoload(prog, false);
 
-	load_attr.obj = skel->obj;
-	load_attr.target_btf_path = btf_file;
-	err = bpf_object__load_xattr(&load_attr);
+	err = bpf_object__load(skel->obj);
 	if (!ASSERT_OK(err, "prog_load"))
 		goto cleanup;
 
@@ -204,14 +203,13 @@ void test_core_autosize(void)
 	skel = NULL;
 
 	/* now re-load with handle_signed() enabled, it should fail loading */
-	skel = test_core_autosize__open();
+	open_opts.btf_custom_path = btf_file;
+	skel = test_core_autosize__open_opts(&open_opts);
 	if (!ASSERT_OK_PTR(skel, "skel_open"))
-		return;
+		goto cleanup;
 
-	load_attr.obj = skel->obj;
-	load_attr.target_btf_path = btf_file;
-	err = bpf_object__load_xattr(&load_attr);
-	if (!ASSERT_ERR(err, "bad_prog_load"))
+	err = test_core_autosize__load(skel);
+	if (!ASSERT_ERR(err, "skel_load"))
 		goto cleanup;
 
 cleanup:
diff --git a/tools/testing/selftests/bpf/prog_tests/core_reloc.c b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
index d02e064c535f..4739b15b2a97 100644
--- a/tools/testing/selftests/bpf/prog_tests/core_reloc.c
+++ b/tools/testing/selftests/bpf/prog_tests/core_reloc.c
@@ -816,7 +816,7 @@ static size_t roundup_page(size_t sz)
 void test_core_reloc(void)
 {
 	const size_t mmap_sz = roundup_page(sizeof(struct data));
-	struct bpf_object_load_attr load_attr = {};
+	DECLARE_LIBBPF_OPTS(bpf_object_open_opts, open_opts);
 	struct core_reloc_test_case *test_case;
 	const char *tp_name, *probe_name;
 	int err, i, equal;
@@ -846,9 +846,16 @@ void test_core_reloc(void)
 				continue;
 		}
 
-		obj = bpf_object__open_file(test_case->bpf_obj_file, NULL);
+		if (test_case->btf_src_file) {
+			err = access(test_case->btf_src_file, R_OK);
+			if (!ASSERT_OK(err, "btf_src_file"))
+				goto cleanup;
+		}
+
+		open_opts.btf_custom_path = test_case->btf_src_file;
+		obj = bpf_object__open_file(test_case->bpf_obj_file, &open_opts);
 		if (!ASSERT_OK_PTR(obj, "obj_open"))
-			continue;
+			goto cleanup;
 
 		probe_name = "raw_tracepoint/sys_enter";
 		tp_name = "sys_enter";
@@ -862,17 +869,7 @@ void test_core_reloc(void)
 			  "prog '%s' not found\n", probe_name))
 			goto cleanup;
 
-
-		if (test_case->btf_src_file) {
-			err = access(test_case->btf_src_file, R_OK);
-			if (!ASSERT_OK(err, "btf_src_file"))
-				goto cleanup;
-		}
-
-		load_attr.obj = obj;
-		load_attr.log_level = 0;
-		load_attr.target_btf_path = test_case->btf_src_file;
-		err = bpf_object__load_xattr(&load_attr);
+		err = bpf_object__load(obj);
 		if (err) {
 			if (!test_case->fails)
 				ASSERT_OK(err, "obj_load");
diff --git a/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c b/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c
new file mode 100644
index 000000000000..02a465f36d59
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/get_func_ip_test.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <test_progs.h>
+#include "get_func_ip_test.skel.h"
+
+void test_get_func_ip_test(void)
+{
+	struct get_func_ip_test *skel = NULL;
+	__u32 duration = 0, retval;
+	int err, prog_fd;
+
+	skel = get_func_ip_test__open();
+	if (!ASSERT_OK_PTR(skel, "get_func_ip_test__open"))
+		return;
+
+	/* test6 is x86_64 specifc because of the instruction
+	 * offset, disabling it for all other archs
+	 */
+#ifndef __x86_64__
+	bpf_program__set_autoload(skel->progs.test6, false);
+	bpf_program__set_autoload(skel->progs.test7, false);
+#endif
+
+	err = get_func_ip_test__load(skel);
+	if (!ASSERT_OK(err, "get_func_ip_test__load"))
+		goto cleanup;
+
+	err = get_func_ip_test__attach(skel);
+	if (!ASSERT_OK(err, "get_func_ip_test__attach"))
+		goto cleanup;
+
+	prog_fd = bpf_program__fd(skel->progs.test1);
+	err = bpf_prog_test_run(prog_fd, 1, NULL, 0,
+				NULL, NULL, &retval, &duration);
+	ASSERT_OK(err, "test_run");
+	ASSERT_EQ(retval, 0, "test_run");
+
+	prog_fd = bpf_program__fd(skel->progs.test5);
+	err = bpf_prog_test_run(prog_fd, 1, NULL, 0,
+				NULL, NULL, &retval, &duration);
+
+	ASSERT_OK(err, "test_run");
+
+	ASSERT_EQ(skel->bss->test1_result, 1, "test1_result");
+	ASSERT_EQ(skel->bss->test2_result, 1, "test2_result");
+	ASSERT_EQ(skel->bss->test3_result, 1, "test3_result");
+	ASSERT_EQ(skel->bss->test4_result, 1, "test4_result");
+	ASSERT_EQ(skel->bss->test5_result, 1, "test5_result");
+#ifdef __x86_64__
+	ASSERT_EQ(skel->bss->test6_result, 1, "test6_result");
+	ASSERT_EQ(skel->bss->test7_result, 1, "test7_result");
+#endif
+
+cleanup:
+	get_func_ip_test__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/kfunc_call.c b/tools/testing/selftests/bpf/prog_tests/kfunc_call.c
index 30a7b9b837bf..9611f2bc50df 100644
--- a/tools/testing/selftests/bpf/prog_tests/kfunc_call.c
+++ b/tools/testing/selftests/bpf/prog_tests/kfunc_call.c
@@ -44,7 +44,7 @@ static void test_subprog(void)
 	ASSERT_OK(err, "bpf_prog_test_run(test1)");
 	ASSERT_EQ(retval, 10, "test1-retval");
 	ASSERT_NEQ(skel->data->active_res, -1, "active_res");
-	ASSERT_EQ(skel->data->sk_state, BPF_TCP_CLOSE, "sk_state");
+	ASSERT_EQ(skel->data->sk_state_res, BPF_TCP_CLOSE, "sk_state_res");
 
 	kfunc_call_test_subprog__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/ksyms_btf.c b/tools/testing/selftests/bpf/prog_tests/ksyms_btf.c
index 67bebd324147..cf3acfa5a91d 100644
--- a/tools/testing/selftests/bpf/prog_tests/ksyms_btf.c
+++ b/tools/testing/selftests/bpf/prog_tests/ksyms_btf.c
@@ -6,6 +6,7 @@
 #include <bpf/btf.h>
 #include "test_ksyms_btf.skel.h"
 #include "test_ksyms_btf_null_check.skel.h"
+#include "test_ksyms_weak.skel.h"
 
 static int duration;
 
@@ -81,6 +82,33 @@ static void test_null_check(void)
 	test_ksyms_btf_null_check__destroy(skel);
 }
 
+static void test_weak_syms(void)
+{
+	struct test_ksyms_weak *skel;
+	struct test_ksyms_weak__data *data;
+	int err;
+
+	skel = test_ksyms_weak__open_and_load();
+	if (CHECK(!skel, "test_ksyms_weak__open_and_load", "failed\n"))
+		return;
+
+	err = test_ksyms_weak__attach(skel);
+	if (CHECK(err, "test_ksyms_weak__attach", "skeleton attach failed: %d\n", err))
+		goto cleanup;
+
+	/* trigger tracepoint */
+	usleep(1);
+
+	data = skel->data;
+	ASSERT_EQ(data->out__existing_typed, 0, "existing typed ksym");
+	ASSERT_NEQ(data->out__existing_typeless, -1, "existing typeless ksym");
+	ASSERT_EQ(data->out__non_existent_typeless, 0, "nonexistent typeless ksym");
+	ASSERT_EQ(data->out__non_existent_typed, 0, "nonexistent typed ksym");
+
+cleanup:
+	test_ksyms_weak__destroy(skel);
+}
+
 void test_ksyms_btf(void)
 {
 	int percpu_datasec;
@@ -105,4 +133,7 @@ void test_ksyms_btf(void)
 
 	if (test__start_subtest("null_check"))
 		test_null_check();
+
+	if (test__start_subtest("weak_ksyms"))
+		test_weak_syms();
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/netcnt.c b/tools/testing/selftests/bpf/prog_tests/netcnt.c
new file mode 100644
index 000000000000..6ede48bde91b
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/netcnt.c
@@ -0,0 +1,82 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <sys/sysinfo.h>
+#include <test_progs.h>
+#include "network_helpers.h"
+#include "netcnt_prog.skel.h"
+#include "netcnt_common.h"
+
+#define CG_NAME "/netcnt"
+
+void test_netcnt(void)
+{
+	union percpu_net_cnt *percpu_netcnt = NULL;
+	struct bpf_cgroup_storage_key key;
+	int map_fd, percpu_map_fd;
+	struct netcnt_prog *skel;
+	unsigned long packets;
+	union net_cnt netcnt;
+	unsigned long bytes;
+	int cpu, nproc;
+	int cg_fd = -1;
+	char cmd[128];
+
+	skel = netcnt_prog__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "netcnt_prog__open_and_load"))
+		return;
+
+	nproc = get_nprocs_conf();
+	percpu_netcnt = malloc(sizeof(*percpu_netcnt) * nproc);
+	if (!ASSERT_OK_PTR(percpu_netcnt, "malloc(percpu_netcnt)"))
+		goto err;
+
+	cg_fd = test__join_cgroup(CG_NAME);
+	if (!ASSERT_GE(cg_fd, 0, "test__join_cgroup"))
+		goto err;
+
+	skel->links.bpf_nextcnt = bpf_program__attach_cgroup(skel->progs.bpf_nextcnt, cg_fd);
+	if (!ASSERT_OK_PTR(skel->links.bpf_nextcnt,
+			   "attach_cgroup(bpf_nextcnt)"))
+		goto err;
+
+	snprintf(cmd, sizeof(cmd), "%s ::1 -A -c 10000 -q > /dev/null", ping_command(AF_INET6));
+	ASSERT_OK(system(cmd), cmd);
+
+	map_fd = bpf_map__fd(skel->maps.netcnt);
+	if (!ASSERT_OK(bpf_map_get_next_key(map_fd, NULL, &key), "bpf_map_get_next_key"))
+		goto err;
+
+	if (!ASSERT_OK(bpf_map_lookup_elem(map_fd, &key, &netcnt), "bpf_map_lookup_elem(netcnt)"))
+		goto err;
+
+	percpu_map_fd = bpf_map__fd(skel->maps.percpu_netcnt);
+	if (!ASSERT_OK(bpf_map_lookup_elem(percpu_map_fd, &key, &percpu_netcnt[0]),
+		       "bpf_map_lookup_elem(percpu_netcnt)"))
+		goto err;
+
+	/* Some packets can be still in per-cpu cache, but not more than
+	 * MAX_PERCPU_PACKETS.
+	 */
+	packets = netcnt.packets;
+	bytes = netcnt.bytes;
+	for (cpu = 0; cpu < nproc; cpu++) {
+		ASSERT_LE(percpu_netcnt[cpu].packets, MAX_PERCPU_PACKETS, "MAX_PERCPU_PACKETS");
+
+		packets += percpu_netcnt[cpu].packets;
+		bytes += percpu_netcnt[cpu].bytes;
+	}
+
+	/* No packets should be lost */
+	ASSERT_EQ(packets, 10000, "packets");
+
+	/* Let's check that bytes counter matches the number of packets
+	 * multiplied by the size of ipv6 ICMP packet.
+	 */
+	ASSERT_EQ(bytes, packets * 104, "bytes");
+
+err:
+	if (cg_fd != -1)
+		close(cg_fd);
+	free(percpu_netcnt);
+	netcnt_prog__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/netns_cookie.c b/tools/testing/selftests/bpf/prog_tests/netns_cookie.c
new file mode 100644
index 000000000000..71d8f3ba7d6b
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/netns_cookie.c
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <test_progs.h>
+#include "netns_cookie_prog.skel.h"
+#include "network_helpers.h"
+
+#ifndef SO_NETNS_COOKIE
+#define SO_NETNS_COOKIE 71
+#endif
+
+static int duration;
+
+void test_netns_cookie(void)
+{
+	int server_fd = -1, client_fd = -1, cgroup_fd = -1;
+	int err, val, ret, map, verdict;
+	struct netns_cookie_prog *skel;
+	uint64_t cookie_expected_value;
+	socklen_t vallen = sizeof(cookie_expected_value);
+	static const char send_msg[] = "message";
+
+	skel = netns_cookie_prog__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "skel_open"))
+		return;
+
+	cgroup_fd = test__join_cgroup("/netns_cookie");
+	if (CHECK(cgroup_fd < 0, "join_cgroup", "cgroup creation failed\n"))
+		goto done;
+
+	skel->links.get_netns_cookie_sockops = bpf_program__attach_cgroup(
+		skel->progs.get_netns_cookie_sockops, cgroup_fd);
+	if (!ASSERT_OK_PTR(skel->links.get_netns_cookie_sockops, "prog_attach"))
+		goto done;
+
+	verdict = bpf_program__fd(skel->progs.get_netns_cookie_sk_msg);
+	map = bpf_map__fd(skel->maps.sock_map);
+	err = bpf_prog_attach(verdict, map, BPF_SK_MSG_VERDICT, 0);
+	if (!ASSERT_OK(err, "prog_attach"))
+		goto done;
+
+	server_fd = start_server(AF_INET6, SOCK_STREAM, "::1", 0, 0);
+	if (CHECK(server_fd < 0, "start_server", "errno %d\n", errno))
+		goto done;
+
+	client_fd = connect_to_fd(server_fd, 0);
+	if (CHECK(client_fd < 0, "connect_to_fd", "errno %d\n", errno))
+		goto done;
+
+	ret = send(client_fd, send_msg, sizeof(send_msg), 0);
+	if (CHECK(ret != sizeof(send_msg), "send(msg)", "ret:%d\n", ret))
+		goto done;
+
+	err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.sockops_netns_cookies),
+				  &client_fd, &val);
+	if (!ASSERT_OK(err, "map_lookup(sockops_netns_cookies)"))
+		goto done;
+
+	err = getsockopt(client_fd, SOL_SOCKET, SO_NETNS_COOKIE,
+			 &cookie_expected_value, &vallen);
+	if (!ASSERT_OK(err, "getsockopt"))
+		goto done;
+
+	ASSERT_EQ(val, cookie_expected_value, "cookie_value");
+
+	err = bpf_map_lookup_elem(bpf_map__fd(skel->maps.sk_msg_netns_cookies),
+				  &client_fd, &val);
+	if (!ASSERT_OK(err, "map_lookup(sk_msg_netns_cookies)"))
+		goto done;
+
+	ASSERT_EQ(val, cookie_expected_value, "cookie_value");
+
+done:
+	if (server_fd != -1)
+		close(server_fd);
+	if (client_fd != -1)
+		close(client_fd);
+	if (cgroup_fd != -1)
+		close(cgroup_fd);
+	netns_cookie_prog__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/perf_link.c b/tools/testing/selftests/bpf/prog_tests/perf_link.c
new file mode 100644
index 000000000000..b1abd0c46607
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/perf_link.c
@@ -0,0 +1,89 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#define _GNU_SOURCE
+#include <pthread.h>
+#include <sched.h>
+#include <test_progs.h>
+#include "test_perf_link.skel.h"
+
+static void burn_cpu(void)
+{
+	volatile int j = 0;
+	cpu_set_t cpu_set;
+	int i, err;
+
+	/* generate some branches on cpu 0 */
+	CPU_ZERO(&cpu_set);
+	CPU_SET(0, &cpu_set);
+	err = pthread_setaffinity_np(pthread_self(), sizeof(cpu_set), &cpu_set);
+	ASSERT_OK(err, "set_thread_affinity");
+
+	/* spin the loop for a while (random high number) */
+	for (i = 0; i < 1000000; ++i)
+		++j;
+}
+
+void test_perf_link(void)
+{
+	struct test_perf_link *skel = NULL;
+	struct perf_event_attr attr;
+	int pfd = -1, link_fd = -1, err;
+	int run_cnt_before, run_cnt_after;
+	struct bpf_link_info info;
+	__u32 info_len = sizeof(info);
+
+	/* create perf event */
+	memset(&attr, 0, sizeof(attr));
+	attr.size = sizeof(attr);
+	attr.type = PERF_TYPE_SOFTWARE;
+	attr.config = PERF_COUNT_SW_CPU_CLOCK;
+	attr.freq = 1;
+	attr.sample_freq = 4000;
+	pfd = syscall(__NR_perf_event_open, &attr, -1, 0, -1, PERF_FLAG_FD_CLOEXEC);
+	if (!ASSERT_GE(pfd, 0, "perf_fd"))
+		goto cleanup;
+
+	skel = test_perf_link__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "skel_load"))
+		goto cleanup;
+
+	link_fd = bpf_link_create(bpf_program__fd(skel->progs.handler), pfd,
+				  BPF_PERF_EVENT, NULL);
+	if (!ASSERT_GE(link_fd, 0, "link_fd"))
+		goto cleanup;
+
+	memset(&info, 0, sizeof(info));
+	err = bpf_obj_get_info_by_fd(link_fd, &info, &info_len);
+	if (!ASSERT_OK(err, "link_get_info"))
+		goto cleanup;
+
+	ASSERT_EQ(info.type, BPF_LINK_TYPE_PERF_EVENT, "link_type");
+	ASSERT_GT(info.id, 0, "link_id");
+	ASSERT_GT(info.prog_id, 0, "link_prog_id");
+
+	/* ensure we get at least one perf_event prog execution */
+	burn_cpu();
+	ASSERT_GT(skel->bss->run_cnt, 0, "run_cnt");
+
+	/* perf_event is still active, but we close link and BPF program
+	 * shouldn't be executed anymore
+	 */
+	close(link_fd);
+	link_fd = -1;
+
+	/* make sure there are no stragglers */
+	kern_sync_rcu();
+
+	run_cnt_before = skel->bss->run_cnt;
+	burn_cpu();
+	run_cnt_after = skel->bss->run_cnt;
+
+	ASSERT_EQ(run_cnt_before, run_cnt_after, "run_cnt_before_after");
+
+cleanup:
+	if (link_fd >= 0)
+		close(link_fd);
+	if (pfd >= 0)
+		close(pfd);
+	test_perf_link__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/pinning.c b/tools/testing/selftests/bpf/prog_tests/pinning.c
index fcf54b3a1dd0..d4b953ae3407 100644
--- a/tools/testing/selftests/bpf/prog_tests/pinning.c
+++ b/tools/testing/selftests/bpf/prog_tests/pinning.c
@@ -125,6 +125,10 @@ void test_pinning(void)
 	if (CHECK(err, "pin maps", "err %d errno %d\n", err, errno))
 		goto out;
 
+	/* get pinning path */
+	if (!ASSERT_STREQ(bpf_map__pin_path(map), pinpath, "get pin path"))
+		goto out;
+
 	/* set pinning path of other map and re-pin all */
 	map = bpf_object__find_map_by_name(obj, "nopinmap");
 	if (CHECK(!map, "find map", "NULL map"))
@@ -134,6 +138,11 @@ void test_pinning(void)
 	if (CHECK(err, "set pin path", "err %d errno %d\n", err, errno))
 		goto out;
 
+	/* get pinning path after set */
+	if (!ASSERT_STREQ(bpf_map__pin_path(map), custpinpath,
+			  "get pin path after set"))
+		goto out;
+
 	/* should only pin the one unpinned map */
 	err = bpf_object__pin_maps(obj, NULL);
 	if (CHECK(err, "pin maps", "err %d errno %d\n", err, errno))
diff --git a/tools/testing/selftests/bpf/prog_tests/reference_tracking.c b/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
index de2688166696..4e91f4d6466c 100644
--- a/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
+++ b/tools/testing/selftests/bpf/prog_tests/reference_tracking.c
@@ -34,8 +34,8 @@ void test_reference_tracking(void)
 		if (!test__start_subtest(title))
 			continue;
 
-		/* Expect verifier failure if test name has 'fail' */
-		if (strstr(title, "fail") != NULL) {
+		/* Expect verifier failure if test name has 'err' */
+		if (strstr(title, "err_") != NULL) {
 			libbpf_print_fn_t old_print_fn;
 
 			old_print_fn = libbpf_set_print(NULL);
diff --git a/tools/testing/selftests/bpf/prog_tests/send_signal.c b/tools/testing/selftests/bpf/prog_tests/send_signal.c
index 023cc532992d..776916b61c40 100644
--- a/tools/testing/selftests/bpf/prog_tests/send_signal.c
+++ b/tools/testing/selftests/bpf/prog_tests/send_signal.c
@@ -1,5 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 #include <test_progs.h>
+#include <sys/time.h>
+#include <sys/resource.h>
 #include "test_send_signal_kern.skel.h"
 
 int sigusr1_received = 0;
@@ -10,29 +12,25 @@ static void sigusr1_handler(int signum)
 }
 
 static void test_send_signal_common(struct perf_event_attr *attr,
-				    bool signal_thread,
-				    const char *test_name)
+				    bool signal_thread)
 {
 	struct test_send_signal_kern *skel;
 	int pipe_c2p[2], pipe_p2c[2];
 	int err = -1, pmu_fd = -1;
-	__u32 duration = 0;
 	char buf[256];
 	pid_t pid;
 
-	if (CHECK(pipe(pipe_c2p), test_name,
-		  "pipe pipe_c2p error: %s\n", strerror(errno)))
+	if (!ASSERT_OK(pipe(pipe_c2p), "pipe_c2p"))
 		return;
 
-	if (CHECK(pipe(pipe_p2c), test_name,
-		  "pipe pipe_p2c error: %s\n", strerror(errno))) {
+	if (!ASSERT_OK(pipe(pipe_p2c), "pipe_p2c")) {
 		close(pipe_c2p[0]);
 		close(pipe_c2p[1]);
 		return;
 	}
 
 	pid = fork();
-	if (CHECK(pid < 0, test_name, "fork error: %s\n", strerror(errno))) {
+	if (!ASSERT_GE(pid, 0, "fork")) {
 		close(pipe_c2p[0]);
 		close(pipe_c2p[1]);
 		close(pipe_p2c[0]);
@@ -41,26 +39,40 @@ static void test_send_signal_common(struct perf_event_attr *attr,
 	}
 
 	if (pid == 0) {
+		int old_prio;
+
 		/* install signal handler and notify parent */
 		signal(SIGUSR1, sigusr1_handler);
 
 		close(pipe_c2p[0]); /* close read */
 		close(pipe_p2c[1]); /* close write */
 
+		/* boost with a high priority so we got a higher chance
+		 * that if an interrupt happens, the underlying task
+		 * is this process.
+		 */
+		errno = 0;
+		old_prio = getpriority(PRIO_PROCESS, 0);
+		ASSERT_OK(errno, "getpriority");
+		ASSERT_OK(setpriority(PRIO_PROCESS, 0, -20), "setpriority");
+
 		/* notify parent signal handler is installed */
-		CHECK(write(pipe_c2p[1], buf, 1) != 1, "pipe_write", "err %d\n", -errno);
+		ASSERT_EQ(write(pipe_c2p[1], buf, 1), 1, "pipe_write");
 
 		/* make sure parent enabled bpf program to send_signal */
-		CHECK(read(pipe_p2c[0], buf, 1) != 1, "pipe_read", "err %d\n", -errno);
+		ASSERT_EQ(read(pipe_p2c[0], buf, 1), 1, "pipe_read");
 
 		/* wait a little for signal handler */
 		sleep(1);
 
 		buf[0] = sigusr1_received ? '2' : '0';
-		CHECK(write(pipe_c2p[1], buf, 1) != 1, "pipe_write", "err %d\n", -errno);
+		ASSERT_EQ(write(pipe_c2p[1], buf, 1), 1, "pipe_write");
 
 		/* wait for parent notification and exit */
-		CHECK(read(pipe_p2c[0], buf, 1) != 1, "pipe_read", "err %d\n", -errno);
+		ASSERT_EQ(read(pipe_p2c[0], buf, 1), 1, "pipe_read");
+
+		/* restore the old priority */
+		ASSERT_OK(setpriority(PRIO_PROCESS, 0, old_prio), "setpriority");
 
 		close(pipe_c2p[1]);
 		close(pipe_p2c[0]);
@@ -71,20 +83,19 @@ static void test_send_signal_common(struct perf_event_attr *attr,
 	close(pipe_p2c[0]); /* close read */
 
 	skel = test_send_signal_kern__open_and_load();
-	if (CHECK(!skel, "skel_open_and_load", "skeleton open_and_load failed\n"))
+	if (!ASSERT_OK_PTR(skel, "skel_open_and_load"))
 		goto skel_open_load_failure;
 
 	if (!attr) {
 		err = test_send_signal_kern__attach(skel);
-		if (CHECK(err, "skel_attach", "skeleton attach failed\n")) {
+		if (!ASSERT_OK(err, "skel_attach")) {
 			err = -1;
 			goto destroy_skel;
 		}
 	} else {
 		pmu_fd = syscall(__NR_perf_event_open, attr, pid, -1,
 				 -1 /* group id */, 0 /* flags */);
-		if (CHECK(pmu_fd < 0, test_name, "perf_event_open error: %s\n",
-			strerror(errno))) {
+		if (!ASSERT_GE(pmu_fd, 0, "perf_event_open")) {
 			err = -1;
 			goto destroy_skel;
 		}
@@ -96,7 +107,7 @@ static void test_send_signal_common(struct perf_event_attr *attr,
 	}
 
 	/* wait until child signal handler installed */
-	CHECK(read(pipe_c2p[0], buf, 1) != 1, "pipe_read", "err %d\n", -errno);
+	ASSERT_EQ(read(pipe_c2p[0], buf, 1), 1, "pipe_read");
 
 	/* trigger the bpf send_signal */
 	skel->bss->pid = pid;
@@ -104,21 +115,21 @@ static void test_send_signal_common(struct perf_event_attr *attr,
 	skel->bss->signal_thread = signal_thread;
 
 	/* notify child that bpf program can send_signal now */
-	CHECK(write(pipe_p2c[1], buf, 1) != 1, "pipe_write", "err %d\n", -errno);
+	ASSERT_EQ(write(pipe_p2c[1], buf, 1), 1, "pipe_write");
 
 	/* wait for result */
 	err = read(pipe_c2p[0], buf, 1);
-	if (CHECK(err < 0, test_name, "reading pipe error: %s\n", strerror(errno)))
+	if (!ASSERT_GE(err, 0, "reading pipe"))
 		goto disable_pmu;
-	if (CHECK(err == 0, test_name, "reading pipe error: size 0\n")) {
+	if (!ASSERT_GT(err, 0, "reading pipe error: size 0")) {
 		err = -1;
 		goto disable_pmu;
 	}
 
-	CHECK(buf[0] != '2', test_name, "incorrect result\n");
+	ASSERT_EQ(buf[0], '2', "incorrect result");
 
 	/* notify child safe to exit */
-	CHECK(write(pipe_p2c[1], buf, 1) != 1, "pipe_write", "err %d\n", -errno);
+	ASSERT_EQ(write(pipe_p2c[1], buf, 1), 1, "pipe_write");
 
 disable_pmu:
 	close(pmu_fd);
@@ -132,7 +143,7 @@ skel_open_load_failure:
 
 static void test_send_signal_tracepoint(bool signal_thread)
 {
-	test_send_signal_common(NULL, signal_thread, "tracepoint");
+	test_send_signal_common(NULL, signal_thread);
 }
 
 static void test_send_signal_perf(bool signal_thread)
@@ -143,7 +154,7 @@ static void test_send_signal_perf(bool signal_thread)
 		.config = PERF_COUNT_SW_CPU_CLOCK,
 	};
 
-	test_send_signal_common(&attr, signal_thread, "perf_sw_event");
+	test_send_signal_common(&attr, signal_thread);
 }
 
 static void test_send_signal_nmi(bool signal_thread)
@@ -172,7 +183,7 @@ static void test_send_signal_nmi(bool signal_thread)
 		close(pmu_fd);
 	}
 
-	test_send_signal_common(&attr, signal_thread, "perf_hw_event");
+	test_send_signal_common(&attr, signal_thread);
 }
 
 void test_send_signal(void)
diff --git a/tools/testing/selftests/bpf/prog_tests/snprintf.c b/tools/testing/selftests/bpf/prog_tests/snprintf.c
index dffbcaa1ec98..8fd1b4b29a0e 100644
--- a/tools/testing/selftests/bpf/prog_tests/snprintf.c
+++ b/tools/testing/selftests/bpf/prog_tests/snprintf.c
@@ -19,7 +19,7 @@
 #define EXP_ADDR_OUT "0000000000000000 ffff00000add4e55 "
 #define EXP_ADDR_RET sizeof(EXP_ADDR_OUT "unknownhashedptr")
 
-#define EXP_STR_OUT  "str1 longstr"
+#define EXP_STR_OUT  "str1         a  b c      d e longstr"
 #define EXP_STR_RET  sizeof(EXP_STR_OUT)
 
 #define EXP_OVER_OUT "%over"
@@ -114,6 +114,8 @@ void test_snprintf_negative(void)
 	ASSERT_ERR(load_single_snprintf("%"), "invalid specifier 3");
 	ASSERT_ERR(load_single_snprintf("%12345678"), "invalid specifier 4");
 	ASSERT_ERR(load_single_snprintf("%--------"), "invalid specifier 5");
+	ASSERT_ERR(load_single_snprintf("%lc"), "invalid specifier 6");
+	ASSERT_ERR(load_single_snprintf("%llc"), "invalid specifier 7");
 	ASSERT_ERR(load_single_snprintf("\x80"), "non ascii character");
 	ASSERT_ERR(load_single_snprintf("\x1"), "non printable character");
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
index 515229f24a93..5c5979046523 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
@@ -351,9 +351,11 @@ static void test_insert_opened(int family, int sotype, int mapfd)
 	errno = 0;
 	value = s;
 	err = bpf_map_update_elem(mapfd, &key, &value, BPF_NOEXIST);
-	if (!err || errno != EOPNOTSUPP)
-		FAIL_ERRNO("map_update: expected EOPNOTSUPP");
-
+	if (sotype == SOCK_STREAM) {
+		if (!err || errno != EOPNOTSUPP)
+			FAIL_ERRNO("map_update: expected EOPNOTSUPP");
+	} else if (err)
+		FAIL_ERRNO("map_update: expected success");
 	xclose(s);
 }
 
@@ -919,6 +921,23 @@ static const char *redir_mode_str(enum redir_mode mode)
 	}
 }
 
+static int add_to_sockmap(int sock_mapfd, int fd1, int fd2)
+{
+	u64 value;
+	u32 key;
+	int err;
+
+	key = 0;
+	value = fd1;
+	err = xbpf_map_update_elem(sock_mapfd, &key, &value, BPF_NOEXIST);
+	if (err)
+		return err;
+
+	key = 1;
+	value = fd2;
+	return xbpf_map_update_elem(sock_mapfd, &key, &value, BPF_NOEXIST);
+}
+
 static void redir_to_connected(int family, int sotype, int sock_mapfd,
 			       int verd_mapfd, enum redir_mode mode)
 {
@@ -928,9 +947,9 @@ static void redir_to_connected(int family, int sotype, int sock_mapfd,
 	unsigned int pass;
 	socklen_t len;
 	int err, n;
-	u64 value;
 	u32 key;
 	char b;
+	int retries = 100;
 
 	zero_verdict_count(verd_mapfd);
 
@@ -965,15 +984,7 @@ static void redir_to_connected(int family, int sotype, int sock_mapfd,
 	if (p1 < 0)
 		goto close_cli1;
 
-	key = 0;
-	value = p0;
-	err = xbpf_map_update_elem(sock_mapfd, &key, &value, BPF_NOEXIST);
-	if (err)
-		goto close_peer1;
-
-	key = 1;
-	value = p1;
-	err = xbpf_map_update_elem(sock_mapfd, &key, &value, BPF_NOEXIST);
+	err = add_to_sockmap(sock_mapfd, p0, p1);
 	if (err)
 		goto close_peer1;
 
@@ -991,10 +1002,15 @@ static void redir_to_connected(int family, int sotype, int sock_mapfd,
 		goto close_peer1;
 	if (pass != 1)
 		FAIL("%s: want pass count 1, have %d", log_prefix, pass);
-
+again:
 	n = read(c0, &b, 1);
-	if (n < 0)
+	if (n < 0) {
+		if (errno == EAGAIN && retries--) {
+			usleep(1000);
+			goto again;
+		}
 		FAIL_ERRNO("%s: read", log_prefix);
+	}
 	if (n == 0)
 		FAIL("%s: incomplete read", log_prefix);
 
@@ -1061,7 +1077,6 @@ static void redir_to_listening(int family, int sotype, int sock_mapfd,
 	int s, c, p, err, n;
 	unsigned int drop;
 	socklen_t len;
-	u64 value;
 	u32 key;
 
 	zero_verdict_count(verd_mapfd);
@@ -1086,15 +1101,7 @@ static void redir_to_listening(int family, int sotype, int sock_mapfd,
 	if (p < 0)
 		goto close_cli;
 
-	key = 0;
-	value = s;
-	err = xbpf_map_update_elem(sock_mapfd, &key, &value, BPF_NOEXIST);
-	if (err)
-		goto close_peer;
-
-	key = 1;
-	value = p;
-	err = xbpf_map_update_elem(sock_mapfd, &key, &value, BPF_NOEXIST);
+	err = add_to_sockmap(sock_mapfd, s, p);
 	if (err)
 		goto close_peer;
 
@@ -1346,7 +1353,6 @@ static void test_reuseport_mixed_groups(int family, int sotype, int sock_map,
 	int s1, s2, c, err;
 	unsigned int drop;
 	socklen_t len;
-	u64 value;
 	u32 key;
 
 	zero_verdict_count(verd_map);
@@ -1360,16 +1366,10 @@ static void test_reuseport_mixed_groups(int family, int sotype, int sock_map,
 	if (s2 < 0)
 		goto close_srv1;
 
-	key = 0;
-	value = s1;
-	err = xbpf_map_update_elem(sock_map, &key, &value, BPF_NOEXIST);
+	err = add_to_sockmap(sock_map, s1, s2);
 	if (err)
 		goto close_srv2;
 
-	key = 1;
-	value = s2;
-	err = xbpf_map_update_elem(sock_map, &key, &value, BPF_NOEXIST);
-
 	/* Connect to s2, reuseport BPF selects s1 via sock_map[0] */
 	len = sizeof(addr);
 	err = xgetsockname(s2, sockaddr(&addr), &len);
@@ -1441,6 +1441,8 @@ static const char *family_str(sa_family_t family)
 		return "IPv4";
 	case AF_INET6:
 		return "IPv6";
+	case AF_UNIX:
+		return "Unix";
 	default:
 		return "unknown";
 	}
@@ -1563,6 +1565,101 @@ static void test_redir(struct test_sockmap_listen *skel, struct bpf_map *map,
 	}
 }
 
+static void unix_redir_to_connected(int sotype, int sock_mapfd,
+			       int verd_mapfd, enum redir_mode mode)
+{
+	const char *log_prefix = redir_mode_str(mode);
+	int c0, c1, p0, p1;
+	unsigned int pass;
+	int retries = 100;
+	int err, n;
+	int sfd[2];
+	u32 key;
+	char b;
+
+	zero_verdict_count(verd_mapfd);
+
+	if (socketpair(AF_UNIX, sotype | SOCK_NONBLOCK, 0, sfd))
+		return;
+	c0 = sfd[0], p0 = sfd[1];
+
+	if (socketpair(AF_UNIX, sotype | SOCK_NONBLOCK, 0, sfd))
+		goto close0;
+	c1 = sfd[0], p1 = sfd[1];
+
+	err = add_to_sockmap(sock_mapfd, p0, p1);
+	if (err)
+		goto close;
+
+	n = write(c1, "a", 1);
+	if (n < 0)
+		FAIL_ERRNO("%s: write", log_prefix);
+	if (n == 0)
+		FAIL("%s: incomplete write", log_prefix);
+	if (n < 1)
+		goto close;
+
+	key = SK_PASS;
+	err = xbpf_map_lookup_elem(verd_mapfd, &key, &pass);
+	if (err)
+		goto close;
+	if (pass != 1)
+		FAIL("%s: want pass count 1, have %d", log_prefix, pass);
+
+again:
+	n = read(mode == REDIR_INGRESS ? p0 : c0, &b, 1);
+	if (n < 0) {
+		if (errno == EAGAIN && retries--) {
+			usleep(1000);
+			goto again;
+		}
+		FAIL_ERRNO("%s: read", log_prefix);
+	}
+	if (n == 0)
+		FAIL("%s: incomplete read", log_prefix);
+
+close:
+	xclose(c1);
+	xclose(p1);
+close0:
+	xclose(c0);
+	xclose(p0);
+}
+
+static void unix_skb_redir_to_connected(struct test_sockmap_listen *skel,
+					struct bpf_map *inner_map, int sotype)
+{
+	int verdict = bpf_program__fd(skel->progs.prog_skb_verdict);
+	int verdict_map = bpf_map__fd(skel->maps.verdict_map);
+	int sock_map = bpf_map__fd(inner_map);
+	int err;
+
+	err = xbpf_prog_attach(verdict, sock_map, BPF_SK_SKB_VERDICT, 0);
+	if (err)
+		return;
+
+	skel->bss->test_ingress = false;
+	unix_redir_to_connected(sotype, sock_map, verdict_map, REDIR_EGRESS);
+	skel->bss->test_ingress = true;
+	unix_redir_to_connected(sotype, sock_map, verdict_map, REDIR_INGRESS);
+
+	xbpf_prog_detach2(verdict, sock_map, BPF_SK_SKB_VERDICT);
+}
+
+static void test_unix_redir(struct test_sockmap_listen *skel, struct bpf_map *map,
+			    int sotype)
+{
+	const char *family_name, *map_name;
+	char s[MAX_TEST_NAME];
+
+	family_name = family_str(AF_UNIX);
+	map_name = map_type_str(map);
+	snprintf(s, sizeof(s), "%s %s %s", map_name, family_name, __func__);
+	if (!test__start_subtest(s))
+		return;
+	unix_skb_redir_to_connected(skel, map, sotype);
+}
+
 static void test_reuseport(struct test_sockmap_listen *skel,
 			   struct bpf_map *map, int family, int sotype)
 {
@@ -1603,33 +1700,27 @@ static void test_reuseport(struct test_sockmap_listen *skel,
 	}
 }
 
-static void udp_redir_to_connected(int family, int sotype, int sock_mapfd,
-				   int verd_mapfd, enum redir_mode mode)
+static int inet_socketpair(int family, int type, int *s, int *c)
 {
-	const char *log_prefix = redir_mode_str(mode);
 	struct sockaddr_storage addr;
-	int c0, c1, p0, p1;
-	unsigned int pass;
-	int retries = 100;
 	socklen_t len;
-	int err, n;
-	u64 value;
-	u32 key;
-	char b;
-
-	zero_verdict_count(verd_mapfd);
+	int p0, c0;
+	int err;
 
-	p0 = socket_loopback(family, sotype | SOCK_NONBLOCK);
+	p0 = socket_loopback(family, type | SOCK_NONBLOCK);
 	if (p0 < 0)
-		return;
+		return p0;
+
 	len = sizeof(addr);
 	err = xgetsockname(p0, sockaddr(&addr), &len);
 	if (err)
 		goto close_peer0;
 
-	c0 = xsocket(family, sotype | SOCK_NONBLOCK, 0);
-	if (c0 < 0)
+	c0 = xsocket(family, type | SOCK_NONBLOCK, 0);
+	if (c0 < 0) {
+		err = c0;
 		goto close_peer0;
+	}
 	err = xconnect(c0, sockaddr(&addr), len);
 	if (err)
 		goto close_cli0;
@@ -1640,35 +1731,133 @@ static void udp_redir_to_connected(int family, int sotype, int sock_mapfd,
 	if (err)
 		goto close_cli0;
 
-	p1 = socket_loopback(family, sotype | SOCK_NONBLOCK);
-	if (p1 < 0)
-		goto close_cli0;
-	err = xgetsockname(p1, sockaddr(&addr), &len);
+	*s = p0;
+	*c = c0;
+	return 0;
+
+close_cli0:
+	xclose(c0);
+close_peer0:
+	xclose(p0);
+	return err;
+}
+
+static void udp_redir_to_connected(int family, int sock_mapfd, int verd_mapfd,
+				   enum redir_mode mode)
+{
+	const char *log_prefix = redir_mode_str(mode);
+	int c0, c1, p0, p1;
+	unsigned int pass;
+	int retries = 100;
+	int err, n;
+	u32 key;
+	char b;
+
+	zero_verdict_count(verd_mapfd);
+
+	err = inet_socketpair(family, SOCK_DGRAM, &p0, &c0);
+	if (err)
+		return;
+	err = inet_socketpair(family, SOCK_DGRAM, &p1, &c1);
 	if (err)
 		goto close_cli0;
 
-	c1 = xsocket(family, sotype | SOCK_NONBLOCK, 0);
-	if (c1 < 0)
-		goto close_peer1;
-	err = xconnect(c1, sockaddr(&addr), len);
+	err = add_to_sockmap(sock_mapfd, p0, p1);
 	if (err)
 		goto close_cli1;
-	err = xgetsockname(c1, sockaddr(&addr), &len);
-	if (err)
+
+	n = write(c1, "a", 1);
+	if (n < 0)
+		FAIL_ERRNO("%s: write", log_prefix);
+	if (n == 0)
+		FAIL("%s: incomplete write", log_prefix);
+	if (n < 1)
 		goto close_cli1;
-	err = xconnect(p1, sockaddr(&addr), len);
+
+	key = SK_PASS;
+	err = xbpf_map_lookup_elem(verd_mapfd, &key, &pass);
 	if (err)
 		goto close_cli1;
+	if (pass != 1)
+		FAIL("%s: want pass count 1, have %d", log_prefix, pass);
 
-	key = 0;
-	value = p0;
-	err = xbpf_map_update_elem(sock_mapfd, &key, &value, BPF_NOEXIST);
+again:
+	n = read(mode == REDIR_INGRESS ? p0 : c0, &b, 1);
+	if (n < 0) {
+		if (errno == EAGAIN && retries--) {
+			usleep(1000);
+			goto again;
+		}
+		FAIL_ERRNO("%s: read", log_prefix);
+	}
+	if (n == 0)
+		FAIL("%s: incomplete read", log_prefix);
+
+close_cli1:
+	xclose(c1);
+	xclose(p1);
+close_cli0:
+	xclose(c0);
+	xclose(p0);
+}
+
+static void udp_skb_redir_to_connected(struct test_sockmap_listen *skel,
+				       struct bpf_map *inner_map, int family)
+{
+	int verdict = bpf_program__fd(skel->progs.prog_skb_verdict);
+	int verdict_map = bpf_map__fd(skel->maps.verdict_map);
+	int sock_map = bpf_map__fd(inner_map);
+	int err;
+
+	err = xbpf_prog_attach(verdict, sock_map, BPF_SK_SKB_VERDICT, 0);
 	if (err)
-		goto close_cli1;
+		return;
 
-	key = 1;
-	value = p1;
-	err = xbpf_map_update_elem(sock_mapfd, &key, &value, BPF_NOEXIST);
+	skel->bss->test_ingress = false;
+	udp_redir_to_connected(family, sock_map, verdict_map, REDIR_EGRESS);
+	skel->bss->test_ingress = true;
+	udp_redir_to_connected(family, sock_map, verdict_map, REDIR_INGRESS);
+
+	xbpf_prog_detach2(verdict, sock_map, BPF_SK_SKB_VERDICT);
+}
+
+static void test_udp_redir(struct test_sockmap_listen *skel, struct bpf_map *map,
+			   int family)
+{
+	const char *family_name, *map_name;
+	char s[MAX_TEST_NAME];
+
+	family_name = family_str(family);
+	map_name = map_type_str(map);
+	snprintf(s, sizeof(s), "%s %s %s", map_name, family_name, __func__);
+	if (!test__start_subtest(s))
+		return;
+	udp_skb_redir_to_connected(skel, map, family);
+}
+
+static void inet_unix_redir_to_connected(int family, int type, int sock_mapfd,
+					int verd_mapfd, enum redir_mode mode)
+{
+	const char *log_prefix = redir_mode_str(mode);
+	int c0, c1, p0, p1;
+	unsigned int pass;
+	int retries = 100;
+	int err, n;
+	int sfd[2];
+	u32 key;
+	char b;
+
+	zero_verdict_count(verd_mapfd);
+
+	if (socketpair(AF_UNIX, SOCK_DGRAM | SOCK_NONBLOCK, 0, sfd))
+		return;
+	c0 = sfd[0], p0 = sfd[1];
+
+	err = inet_socketpair(family, SOCK_DGRAM, &p1, &c1);
+	if (err)
+		goto close;
+
+	err = add_to_sockmap(sock_mapfd, p0, p1);
 	if (err)
 		goto close_cli1;
 
@@ -1690,8 +1879,10 @@ static void udp_redir_to_connected(int family, int sotype, int sock_mapfd,
 again:
 	n = read(mode == REDIR_INGRESS ? p0 : c0, &b, 1);
 	if (n < 0) {
-		if (errno == EAGAIN && retries--)
+		if (errno == EAGAIN && retries--) {
+			usleep(1000);
 			goto again;
+		}
 		FAIL_ERRNO("%s: read", log_prefix);
 	}
 	if (n == 0)
@@ -1699,16 +1890,102 @@ again:
 
 close_cli1:
 	xclose(c1);
-close_peer1:
+	xclose(p1);
+close:
+	xclose(c0);
+	xclose(p0);
+}
+
+static void inet_unix_skb_redir_to_connected(struct test_sockmap_listen *skel,
+					    struct bpf_map *inner_map, int family)
+{
+	int verdict = bpf_program__fd(skel->progs.prog_skb_verdict);
+	int verdict_map = bpf_map__fd(skel->maps.verdict_map);
+	int sock_map = bpf_map__fd(inner_map);
+	int err;
+
+	err = xbpf_prog_attach(verdict, sock_map, BPF_SK_SKB_VERDICT, 0);
+	if (err)
+		return;
+
+	skel->bss->test_ingress = false;
+	inet_unix_redir_to_connected(family, SOCK_DGRAM, sock_map, verdict_map,
+				    REDIR_EGRESS);
+	inet_unix_redir_to_connected(family, SOCK_STREAM, sock_map, verdict_map,
+				    REDIR_EGRESS);
+	skel->bss->test_ingress = true;
+	inet_unix_redir_to_connected(family, SOCK_DGRAM, sock_map, verdict_map,
+				    REDIR_INGRESS);
+	inet_unix_redir_to_connected(family, SOCK_STREAM, sock_map, verdict_map,
+				    REDIR_INGRESS);
+
+	xbpf_prog_detach2(verdict, sock_map, BPF_SK_SKB_VERDICT);
+}
+
+static void unix_inet_redir_to_connected(int family, int type, int sock_mapfd,
+					int verd_mapfd, enum redir_mode mode)
+{
+	const char *log_prefix = redir_mode_str(mode);
+	int c0, c1, p0, p1;
+	unsigned int pass;
+	int err, n;
+	int sfd[2];
+	u32 key;
+	char b;
+	int retries = 100;
+
+	zero_verdict_count(verd_mapfd);
+
+	err = inet_socketpair(family, SOCK_DGRAM, &p0, &c0);
+	if (err)
+		return;
+
+	if (socketpair(AF_UNIX, SOCK_DGRAM | SOCK_NONBLOCK, 0, sfd))
+		goto close_cli0;
+	c1 = sfd[0], p1 = sfd[1];
+
+	err = add_to_sockmap(sock_mapfd, p0, p1);
+	if (err)
+		goto close;
+
+	n = write(c1, "a", 1);
+	if (n < 0)
+		FAIL_ERRNO("%s: write", log_prefix);
+	if (n == 0)
+		FAIL("%s: incomplete write", log_prefix);
+	if (n < 1)
+		goto close;
+
+	key = SK_PASS;
+	err = xbpf_map_lookup_elem(verd_mapfd, &key, &pass);
+	if (err)
+		goto close;
+	if (pass != 1)
+		FAIL("%s: want pass count 1, have %d", log_prefix, pass);
+
+again:
+	n = read(mode == REDIR_INGRESS ? p0 : c0, &b, 1);
+	if (n < 0) {
+		if (errno == EAGAIN && retries--) {
+			usleep(1000);
+			goto again;
+		}
+		FAIL_ERRNO("%s: read", log_prefix);
+	}
+	if (n == 0)
+		FAIL("%s: incomplete read", log_prefix);
+
+close:
+	xclose(c1);
 	xclose(p1);
 close_cli0:
 	xclose(c0);
-close_peer0:
 	xclose(p0);
+
 }
 
-static void udp_skb_redir_to_connected(struct test_sockmap_listen *skel,
-				       struct bpf_map *inner_map, int family)
+static void unix_inet_skb_redir_to_connected(struct test_sockmap_listen *skel,
+					    struct bpf_map *inner_map, int family)
 {
 	int verdict = bpf_program__fd(skel->progs.prog_skb_verdict);
 	int verdict_map = bpf_map__fd(skel->maps.verdict_map);
@@ -1720,17 +1997,21 @@ static void udp_skb_redir_to_connected(struct test_sockmap_listen *skel,
 		return;
 
 	skel->bss->test_ingress = false;
-	udp_redir_to_connected(family, SOCK_DGRAM, sock_map, verdict_map,
-			       REDIR_EGRESS);
+	unix_inet_redir_to_connected(family, SOCK_DGRAM, sock_map, verdict_map,
+				     REDIR_EGRESS);
+	unix_inet_redir_to_connected(family, SOCK_STREAM, sock_map, verdict_map,
+				     REDIR_EGRESS);
 	skel->bss->test_ingress = true;
-	udp_redir_to_connected(family, SOCK_DGRAM, sock_map, verdict_map,
-			       REDIR_INGRESS);
+	unix_inet_redir_to_connected(family, SOCK_DGRAM, sock_map, verdict_map,
+				     REDIR_INGRESS);
+	unix_inet_redir_to_connected(family, SOCK_STREAM, sock_map, verdict_map,
+				     REDIR_INGRESS);
 
 	xbpf_prog_detach2(verdict, sock_map, BPF_SK_SKB_VERDICT);
 }
 
-static void test_udp_redir(struct test_sockmap_listen *skel, struct bpf_map *map,
-			   int family)
+static void test_udp_unix_redir(struct test_sockmap_listen *skel, struct bpf_map *map,
+				int family)
 {
 	const char *family_name, *map_name;
 	char s[MAX_TEST_NAME];
@@ -1740,7 +2021,8 @@ static void test_udp_redir(struct test_sockmap_listen *skel, struct bpf_map *map
 	snprintf(s, sizeof(s), "%s %s %s", map_name, family_name, __func__);
 	if (!test__start_subtest(s))
 		return;
-	udp_skb_redir_to_connected(skel, map, family);
+	inet_unix_skb_redir_to_connected(skel, map, family);
+	unix_inet_skb_redir_to_connected(skel, map, family);
 }
 
 static void run_tests(struct test_sockmap_listen *skel, struct bpf_map *map,
@@ -1752,6 +2034,7 @@ static void run_tests(struct test_sockmap_listen *skel, struct bpf_map *map,
 	test_reuseport(skel, map, family, SOCK_STREAM);
 	test_reuseport(skel, map, family, SOCK_DGRAM);
 	test_udp_redir(skel, map, family);
+	test_udp_unix_redir(skel, map, family);
 }
 
 void test_sockmap_listen(void)
@@ -1767,10 +2050,14 @@ void test_sockmap_listen(void)
 	skel->bss->test_sockmap = true;
 	run_tests(skel, skel->maps.sock_map, AF_INET);
 	run_tests(skel, skel->maps.sock_map, AF_INET6);
+	test_unix_redir(skel, skel->maps.sock_map, SOCK_DGRAM);
+	test_unix_redir(skel, skel->maps.sock_map, SOCK_STREAM);
 
 	skel->bss->test_sockmap = false;
 	run_tests(skel, skel->maps.sock_hash, AF_INET);
 	run_tests(skel, skel->maps.sock_hash, AF_INET6);
+	test_unix_redir(skel, skel->maps.sock_hash, SOCK_DGRAM);
+	test_unix_redir(skel, skel->maps.sock_hash, SOCK_STREAM);
 
 	test_sockmap_listen__destroy(skel);
 }
diff --git a/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c b/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c
index ec281b0363b8..86f97681ad89 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c
@@ -195,8 +195,10 @@ static void run_test(int cgroup_fd)
 
 	pthread_mutex_lock(&server_started_mtx);
 	if (CHECK_FAIL(pthread_create(&tid, NULL, server_thread,
-				      (void *)&server_fd)))
+				      (void *)&server_fd))) {
+		pthread_mutex_unlock(&server_started_mtx);
 		goto close_server_fd;
+	}
 	pthread_cond_wait(&server_started, &server_started_mtx);
 	pthread_mutex_unlock(&server_started_mtx);
 
diff --git a/tools/testing/selftests/bpf/prog_tests/sockopt_qos_to_cc.c b/tools/testing/selftests/bpf/prog_tests/sockopt_qos_to_cc.c
new file mode 100644
index 000000000000..6b53b3cb8dad
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/sockopt_qos_to_cc.c
@@ -0,0 +1,70 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <test_progs.h>
+#include <netinet/tcp.h>
+#include "sockopt_qos_to_cc.skel.h"
+
+static void run_setsockopt_test(int cg_fd, int sock_fd)
+{
+	socklen_t optlen;
+	char cc[16]; /* TCP_CA_NAME_MAX */
+	int buf;
+	int err = -1;
+
+	buf = 0x2D;
+	err = setsockopt(sock_fd, SOL_IPV6, IPV6_TCLASS, &buf, sizeof(buf));
+	if (!ASSERT_OK(err, "setsockopt(sock_fd, IPV6_TCLASS)"))
+		return;
+
+	/* Verify the setsockopt cc change */
+	optlen = sizeof(cc);
+	err = getsockopt(sock_fd, SOL_TCP, TCP_CONGESTION, cc, &optlen);
+	if (!ASSERT_OK(err, "getsockopt(sock_fd, TCP_CONGESTION)"))
+		return;
+
+	if (!ASSERT_STREQ(cc, "reno", "getsockopt(sock_fd, TCP_CONGESTION)"))
+		return;
+}
+
+void test_sockopt_qos_to_cc(void)
+{
+	struct sockopt_qos_to_cc *skel;
+	char cc_cubic[16] = "cubic"; /* TCP_CA_NAME_MAX */
+	int cg_fd = -1;
+	int sock_fd = -1;
+	int err;
+
+	cg_fd = test__join_cgroup("/sockopt_qos_to_cc");
+	if (!ASSERT_GE(cg_fd, 0, "cg-join(sockopt_qos_to_cc)"))
+		return;
+
+	skel = sockopt_qos_to_cc__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "skel"))
+		goto done;
+
+	sock_fd = socket(AF_INET6, SOCK_STREAM, 0);
+	if (!ASSERT_GE(sock_fd, 0, "v6 socket open"))
+		goto done;
+
+	err = setsockopt(sock_fd, SOL_TCP, TCP_CONGESTION, &cc_cubic,
+			 sizeof(cc_cubic));
+	if (!ASSERT_OK(err, "setsockopt(sock_fd, TCP_CONGESTION)"))
+		goto done;
+
+	skel->links.sockopt_qos_to_cc =
+		bpf_program__attach_cgroup(skel->progs.sockopt_qos_to_cc,
+					   cg_fd);
+	if (!ASSERT_OK_PTR(skel->links.sockopt_qos_to_cc,
+			   "prog_attach(sockopt_qos_to_cc)"))
+		goto done;
+
+	run_setsockopt_test(cg_fd, sock_fd);
+
+done:
+	if (sock_fd != -1)
+		close(sock_fd);
+	if (cg_fd != -1)
+		close(cg_fd);
+	/* destroy can take null and error pointer */
+	sockopt_qos_to_cc__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/task_pt_regs.c b/tools/testing/selftests/bpf/prog_tests/task_pt_regs.c
new file mode 100644
index 000000000000..53f0e0fa1a53
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/task_pt_regs.c
@@ -0,0 +1,47 @@
+// SPDX-License-Identifier: GPL-2.0
+#define _GNU_SOURCE
+#include <test_progs.h>
+#include <linux/ptrace.h>
+#include "test_task_pt_regs.skel.h"
+
+void test_task_pt_regs(void)
+{
+	struct test_task_pt_regs *skel;
+	struct bpf_link *uprobe_link;
+	size_t uprobe_offset;
+	ssize_t base_addr;
+	bool match;
+
+	base_addr = get_base_addr();
+	if (!ASSERT_GT(base_addr, 0, "get_base_addr"))
+		return;
+	uprobe_offset = get_uprobe_offset(&get_base_addr, base_addr);
+
+	skel = test_task_pt_regs__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "skel_open"))
+		return;
+	if (!ASSERT_OK_PTR(skel->bss, "check_bss"))
+		goto cleanup;
+
+	uprobe_link = bpf_program__attach_uprobe(skel->progs.handle_uprobe,
+						 false /* retprobe */,
+						 0 /* self pid */,
+						 "/proc/self/exe",
+						 uprobe_offset);
+	if (!ASSERT_OK_PTR(uprobe_link, "attach_uprobe"))
+		goto cleanup;
+	skel->links.handle_uprobe = uprobe_link;
+
+	/* trigger & validate uprobe */
+	get_base_addr();
+
+	if (!ASSERT_EQ(skel->bss->uprobe_res, 1, "check_uprobe_res"))
+		goto cleanup;
+
+	match = !memcmp(&skel->bss->current_regs, &skel->bss->ctx_regs,
+			sizeof(skel->bss->current_regs));
+	ASSERT_TRUE(match, "check_regs_match");
+
+cleanup:
+	test_task_pt_regs__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
index 5703c918812b..e7201ba29ccd 100644
--- a/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
+++ b/tools/testing/selftests/bpf/prog_tests/tc_redirect.c
@@ -13,15 +13,16 @@
 #define _GNU_SOURCE
 
 #include <arpa/inet.h>
+#include <linux/if.h>
+#include <linux/if_tun.h>
 #include <linux/limits.h>
 #include <linux/sysctl.h>
-#include <linux/if_tun.h>
-#include <linux/if.h>
 #include <sched.h>
 #include <stdbool.h>
 #include <stdio.h>
-#include <sys/stat.h>
 #include <sys/mount.h>
+#include <sys/stat.h>
+#include <unistd.h>
 
 #include "test_progs.h"
 #include "network_helpers.h"
@@ -391,9 +392,7 @@ done:
 
 static int test_ping(int family, const char *addr)
 {
-	const char *ping = family == AF_INET6 ? "ping6" : "ping";
-
-	SYS("ip netns exec " NS_SRC " %s " PING_ARGS " %s > /dev/null", ping, addr);
+	SYS("ip netns exec " NS_SRC " %s " PING_ARGS " %s > /dev/null", ping_command(family), addr);
 	return 0;
 fail:
 	return -1;
diff --git a/tools/testing/selftests/bpf/prog_tests/timer.c b/tools/testing/selftests/bpf/prog_tests/timer.c
new file mode 100644
index 000000000000..25f40e1b9967
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/timer.c
@@ -0,0 +1,55 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <test_progs.h>
+#include "timer.skel.h"
+
+static int timer(struct timer *timer_skel)
+{
+	int err, prog_fd;
+	__u32 duration = 0, retval;
+
+	err = timer__attach(timer_skel);
+	if (!ASSERT_OK(err, "timer_attach"))
+		return err;
+
+	ASSERT_EQ(timer_skel->data->callback_check, 52, "callback_check1");
+	ASSERT_EQ(timer_skel->data->callback2_check, 52, "callback2_check1");
+
+	prog_fd = bpf_program__fd(timer_skel->progs.test1);
+	err = bpf_prog_test_run(prog_fd, 1, NULL, 0,
+				NULL, NULL, &retval, &duration);
+	ASSERT_OK(err, "test_run");
+	ASSERT_EQ(retval, 0, "test_run");
+	timer__detach(timer_skel);
+
+	usleep(50); /* 10 usecs should be enough, but give it extra */
+	/* check that timer_cb1() was executed 10+10 times */
+	ASSERT_EQ(timer_skel->data->callback_check, 42, "callback_check2");
+	ASSERT_EQ(timer_skel->data->callback2_check, 42, "callback2_check2");
+
+	/* check that timer_cb2() was executed twice */
+	ASSERT_EQ(timer_skel->bss->bss_data, 10, "bss_data");
+
+	/* check that there were no errors in timer execution */
+	ASSERT_EQ(timer_skel->bss->err, 0, "err");
+
+	/* check that code paths completed */
+	ASSERT_EQ(timer_skel->bss->ok, 1 | 2 | 4, "ok");
+
+	return 0;
+}
+
+void test_timer(void)
+{
+	struct timer *timer_skel = NULL;
+	int err;
+
+	timer_skel = timer__open_and_load();
+	if (!ASSERT_OK_PTR(timer_skel, "timer_skel_load"))
+		goto cleanup;
+
+	err = timer(timer_skel);
+	ASSERT_OK(err, "timer");
+cleanup:
+	timer__destroy(timer_skel);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/timer_mim.c b/tools/testing/selftests/bpf/prog_tests/timer_mim.c
new file mode 100644
index 000000000000..ced8f6cf347c
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/timer_mim.c
@@ -0,0 +1,77 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <test_progs.h>
+#include "timer_mim.skel.h"
+#include "timer_mim_reject.skel.h"
+
+static int timer_mim(struct timer_mim *timer_skel)
+{
+	__u32 duration = 0, retval;
+	__u64 cnt1, cnt2;
+	int err, prog_fd, key1 = 1;
+
+	err = timer_mim__attach(timer_skel);
+	if (!ASSERT_OK(err, "timer_attach"))
+		return err;
+
+	prog_fd = bpf_program__fd(timer_skel->progs.test1);
+	err = bpf_prog_test_run(prog_fd, 1, NULL, 0,
+				NULL, NULL, &retval, &duration);
+	ASSERT_OK(err, "test_run");
+	ASSERT_EQ(retval, 0, "test_run");
+	timer_mim__detach(timer_skel);
+
+	/* check that timer_cb[12] are incrementing 'cnt' */
+	cnt1 = READ_ONCE(timer_skel->bss->cnt);
+	for (int i = 0; i < 100; i++) {
+		cnt2 = READ_ONCE(timer_skel->bss->cnt);
+		if (cnt2 != cnt1)
+			break;
+		usleep(200); /* 100 times more than interval */
+	}
+	ASSERT_GT(cnt2, cnt1, "cnt");
+
+	ASSERT_EQ(timer_skel->bss->err, 0, "err");
+	/* check that code paths completed */
+	ASSERT_EQ(timer_skel->bss->ok, 1 | 2, "ok");
+
+	close(bpf_map__fd(timer_skel->maps.inner_htab));
+	err = bpf_map_delete_elem(bpf_map__fd(timer_skel->maps.outer_arr), &key1);
+	ASSERT_EQ(err, 0, "delete inner map");
+
+	/* check that timer_cb[12] are no longer running */
+	cnt1 = READ_ONCE(timer_skel->bss->cnt);
+	for (int i = 0; i < 100; i++) {
+		usleep(200); /* 100 times more than interval */
+		cnt2 = READ_ONCE(timer_skel->bss->cnt);
+		if (cnt2 == cnt1)
+			break;
+	}
+	ASSERT_EQ(cnt2, cnt1, "cnt");
+
+	return 0;
+}
+
+void test_timer_mim(void)
+{
+	struct timer_mim_reject *timer_reject_skel = NULL;
+	libbpf_print_fn_t old_print_fn = NULL;
+	struct timer_mim *timer_skel = NULL;
+	int err;
+
+	old_print_fn = libbpf_set_print(NULL);
+	timer_reject_skel = timer_mim_reject__open_and_load();
+	libbpf_set_print(old_print_fn);
+	if (!ASSERT_ERR_PTR(timer_reject_skel, "timer_reject_skel_load"))
+		goto cleanup;
+
+	timer_skel = timer_mim__open_and_load();
+	if (!ASSERT_OK_PTR(timer_skel, "timer_skel_load"))
+		goto cleanup;
+
+	err = timer_mim(timer_skel);
+	ASSERT_OK(err, "timer_mim");
+cleanup:
+	timer_mim__destroy(timer_skel);
+	timer_mim_reject__destroy(timer_reject_skel);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_bonding.c b/tools/testing/selftests/bpf/prog_tests/xdp_bonding.c
new file mode 100644
index 000000000000..370d220288a6
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_bonding.c
@@ -0,0 +1,520 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/**
+ * Test XDP bonding support
+ *
+ * Sets up two bonded veth pairs between two fresh namespaces
+ * and verifies that XDP_TX program loaded on a bond device
+ * are correctly loaded onto the slave devices and XDP_TX'd
+ * packets are balanced using bonding.
+ */
+
+#define _GNU_SOURCE
+#include <sched.h>
+#include <net/if.h>
+#include <linux/if_link.h>
+#include "test_progs.h"
+#include "network_helpers.h"
+#include <linux/if_bonding.h>
+#include <linux/limits.h>
+#include <linux/udp.h>
+
+#include "xdp_dummy.skel.h"
+#include "xdp_redirect_multi_kern.skel.h"
+#include "xdp_tx.skel.h"
+
+#define BOND1_MAC {0x00, 0x11, 0x22, 0x33, 0x44, 0x55}
+#define BOND1_MAC_STR "00:11:22:33:44:55"
+#define BOND2_MAC {0x00, 0x22, 0x33, 0x44, 0x55, 0x66}
+#define BOND2_MAC_STR "00:22:33:44:55:66"
+#define NPACKETS 100
+
+static int root_netns_fd = -1;
+
+static void restore_root_netns(void)
+{
+	ASSERT_OK(setns(root_netns_fd, CLONE_NEWNET), "restore_root_netns");
+}
+
+static int setns_by_name(char *name)
+{
+	int nsfd, err;
+	char nspath[PATH_MAX];
+
+	snprintf(nspath, sizeof(nspath), "%s/%s", "/var/run/netns", name);
+	nsfd = open(nspath, O_RDONLY | O_CLOEXEC);
+	if (nsfd < 0)
+		return -1;
+
+	err = setns(nsfd, CLONE_NEWNET);
+	close(nsfd);
+	return err;
+}
+
+static int get_rx_packets(const char *iface)
+{
+	FILE *f;
+	char line[512];
+	int iface_len = strlen(iface);
+
+	f = fopen("/proc/net/dev", "r");
+	if (!f)
+		return -1;
+
+	while (fgets(line, sizeof(line), f)) {
+		char *p = line;
+
+		while (*p == ' ')
+			p++; /* skip whitespace */
+		if (!strncmp(p, iface, iface_len)) {
+			p += iface_len;
+			if (*p++ != ':')
+				continue;
+			while (*p == ' ')
+				p++; /* skip whitespace */
+			while (*p && *p != ' ')
+				p++; /* skip rx bytes */
+			while (*p == ' ')
+				p++; /* skip whitespace */
+			fclose(f);
+			return atoi(p);
+		}
+	}
+	fclose(f);
+	return -1;
+}
+
+#define MAX_BPF_LINKS 8
+
+struct skeletons {
+	struct xdp_dummy *xdp_dummy;
+	struct xdp_tx *xdp_tx;
+	struct xdp_redirect_multi_kern *xdp_redirect_multi_kern;
+
+	int nlinks;
+	struct bpf_link *links[MAX_BPF_LINKS];
+};
+
+static int xdp_attach(struct skeletons *skeletons, struct bpf_program *prog, char *iface)
+{
+	struct bpf_link *link;
+	int ifindex;
+
+	ifindex = if_nametoindex(iface);
+	if (!ASSERT_GT(ifindex, 0, "get ifindex"))
+		return -1;
+
+	if (!ASSERT_LE(skeletons->nlinks+1, MAX_BPF_LINKS, "too many XDP programs attached"))
+		return -1;
+
+	link = bpf_program__attach_xdp(prog, ifindex);
+	if (!ASSERT_OK_PTR(link, "attach xdp program"))
+		return -1;
+
+	skeletons->links[skeletons->nlinks++] = link;
+	return 0;
+}
+
+enum {
+	BOND_ONE_NO_ATTACH = 0,
+	BOND_BOTH_AND_ATTACH,
+};
+
+static const char * const mode_names[] = {
+	[BOND_MODE_ROUNDROBIN]   = "balance-rr",
+	[BOND_MODE_ACTIVEBACKUP] = "active-backup",
+	[BOND_MODE_XOR]          = "balance-xor",
+	[BOND_MODE_BROADCAST]    = "broadcast",
+	[BOND_MODE_8023AD]       = "802.3ad",
+	[BOND_MODE_TLB]          = "balance-tlb",
+	[BOND_MODE_ALB]          = "balance-alb",
+};
+
+static const char * const xmit_policy_names[] = {
+	[BOND_XMIT_POLICY_LAYER2]       = "layer2",
+	[BOND_XMIT_POLICY_LAYER34]      = "layer3+4",
+	[BOND_XMIT_POLICY_LAYER23]      = "layer2+3",
+	[BOND_XMIT_POLICY_ENCAP23]      = "encap2+3",
+	[BOND_XMIT_POLICY_ENCAP34]      = "encap3+4",
+};
+
+static int bonding_setup(struct skeletons *skeletons, int mode, int xmit_policy,
+			 int bond_both_attach)
+{
+#define SYS(fmt, ...)						\
+	({							\
+		char cmd[1024];					\
+		snprintf(cmd, sizeof(cmd), fmt, ##__VA_ARGS__);	\
+		if (!ASSERT_OK(system(cmd), cmd))		\
+			return -1;				\
+	})
+
+	SYS("ip netns add ns_dst");
+	SYS("ip link add veth1_1 type veth peer name veth2_1 netns ns_dst");
+	SYS("ip link add veth1_2 type veth peer name veth2_2 netns ns_dst");
+
+	SYS("ip link add bond1 type bond mode %s xmit_hash_policy %s",
+	    mode_names[mode], xmit_policy_names[xmit_policy]);
+	SYS("ip link set bond1 up address " BOND1_MAC_STR " addrgenmode none");
+	SYS("ip -netns ns_dst link add bond2 type bond mode %s xmit_hash_policy %s",
+	    mode_names[mode], xmit_policy_names[xmit_policy]);
+	SYS("ip -netns ns_dst link set bond2 up address " BOND2_MAC_STR " addrgenmode none");
+
+	SYS("ip link set veth1_1 master bond1");
+	if (bond_both_attach == BOND_BOTH_AND_ATTACH) {
+		SYS("ip link set veth1_2 master bond1");
+	} else {
+		SYS("ip link set veth1_2 up addrgenmode none");
+
+		if (xdp_attach(skeletons, skeletons->xdp_dummy->progs.xdp_dummy_prog, "veth1_2"))
+			return -1;
+	}
+
+	SYS("ip -netns ns_dst link set veth2_1 master bond2");
+
+	if (bond_both_attach == BOND_BOTH_AND_ATTACH)
+		SYS("ip -netns ns_dst link set veth2_2 master bond2");
+	else
+		SYS("ip -netns ns_dst link set veth2_2 up addrgenmode none");
+
+	/* Load a dummy program on sending side as with veth peer needs to have a
+	 * XDP program loaded as well.
+	 */
+	if (xdp_attach(skeletons, skeletons->xdp_dummy->progs.xdp_dummy_prog, "bond1"))
+		return -1;
+
+	if (bond_both_attach == BOND_BOTH_AND_ATTACH) {
+		if (!ASSERT_OK(setns_by_name("ns_dst"), "set netns to ns_dst"))
+			return -1;
+
+		if (xdp_attach(skeletons, skeletons->xdp_tx->progs.xdp_tx, "bond2"))
+			return -1;
+
+		restore_root_netns();
+	}
+
+	return 0;
+
+#undef SYS
+}
+
+static void bonding_cleanup(struct skeletons *skeletons)
+{
+	restore_root_netns();
+	while (skeletons->nlinks) {
+		skeletons->nlinks--;
+		bpf_link__destroy(skeletons->links[skeletons->nlinks]);
+	}
+	ASSERT_OK(system("ip link delete bond1"), "delete bond1");
+	ASSERT_OK(system("ip link delete veth1_1"), "delete veth1_1");
+	ASSERT_OK(system("ip link delete veth1_2"), "delete veth1_2");
+	ASSERT_OK(system("ip netns delete ns_dst"), "delete ns_dst");
+}
+
+static int send_udp_packets(int vary_dst_ip)
+{
+	struct ethhdr eh = {
+		.h_source = BOND1_MAC,
+		.h_dest = BOND2_MAC,
+		.h_proto = htons(ETH_P_IP),
+	};
+	uint8_t buf[128] = {};
+	struct iphdr *iph = (struct iphdr *)(buf + sizeof(eh));
+	struct udphdr *uh = (struct udphdr *)(buf + sizeof(eh) + sizeof(*iph));
+	int i, s = -1;
+	int ifindex;
+
+	s = socket(AF_PACKET, SOCK_RAW, IPPROTO_RAW);
+	if (!ASSERT_GE(s, 0, "socket"))
+		goto err;
+
+	ifindex = if_nametoindex("bond1");
+	if (!ASSERT_GT(ifindex, 0, "get bond1 ifindex"))
+		goto err;
+
+	memcpy(buf, &eh, sizeof(eh));
+	iph->ihl = 5;
+	iph->version = 4;
+	iph->tos = 16;
+	iph->id = 1;
+	iph->ttl = 64;
+	iph->protocol = IPPROTO_UDP;
+	iph->saddr = 1;
+	iph->daddr = 2;
+	iph->tot_len = htons(sizeof(buf) - ETH_HLEN);
+	iph->check = 0;
+
+	for (i = 1; i <= NPACKETS; i++) {
+		int n;
+		struct sockaddr_ll saddr_ll = {
+			.sll_ifindex = ifindex,
+			.sll_halen = ETH_ALEN,
+			.sll_addr = BOND2_MAC,
+		};
+
+		/* vary the UDP destination port for even distribution with roundrobin/xor modes */
+		uh->dest++;
+
+		if (vary_dst_ip)
+			iph->daddr++;
+
+		n = sendto(s, buf, sizeof(buf), 0, (struct sockaddr *)&saddr_ll, sizeof(saddr_ll));
+		if (!ASSERT_EQ(n, sizeof(buf), "sendto"))
+			goto err;
+	}
+
+	return 0;
+
+err:
+	if (s >= 0)
+		close(s);
+	return -1;
+}
+
+static void test_xdp_bonding_with_mode(struct skeletons *skeletons, int mode, int xmit_policy)
+{
+	int bond1_rx;
+
+	if (bonding_setup(skeletons, mode, xmit_policy, BOND_BOTH_AND_ATTACH))
+		goto out;
+
+	if (send_udp_packets(xmit_policy != BOND_XMIT_POLICY_LAYER34))
+		goto out;
+
+	bond1_rx = get_rx_packets("bond1");
+	ASSERT_EQ(bond1_rx, NPACKETS, "expected more received packets");
+
+	switch (mode) {
+	case BOND_MODE_ROUNDROBIN:
+	case BOND_MODE_XOR: {
+		int veth1_rx = get_rx_packets("veth1_1");
+		int veth2_rx = get_rx_packets("veth1_2");
+		int diff = abs(veth1_rx - veth2_rx);
+
+		ASSERT_GE(veth1_rx + veth2_rx, NPACKETS, "expected more packets");
+
+		switch (xmit_policy) {
+		case BOND_XMIT_POLICY_LAYER2:
+			ASSERT_GE(diff, NPACKETS,
+				  "expected packets on only one of the interfaces");
+			break;
+		case BOND_XMIT_POLICY_LAYER23:
+		case BOND_XMIT_POLICY_LAYER34:
+			ASSERT_LT(diff, NPACKETS/2,
+				  "expected even distribution of packets");
+			break;
+		default:
+			PRINT_FAIL("Unimplemented xmit_policy=%d\n", xmit_policy);
+			break;
+		}
+		break;
+	}
+	case BOND_MODE_ACTIVEBACKUP: {
+		int veth1_rx = get_rx_packets("veth1_1");
+		int veth2_rx = get_rx_packets("veth1_2");
+		int diff = abs(veth1_rx - veth2_rx);
+
+		ASSERT_GE(diff, NPACKETS,
+			  "expected packets on only one of the interfaces");
+		break;
+	}
+	default:
+		PRINT_FAIL("Unimplemented xmit_policy=%d\n", xmit_policy);
+		break;
+	}
+
+out:
+	bonding_cleanup(skeletons);
+}
+
+/* Test the broadcast redirection using xdp_redirect_map_multi_prog and adding
+ * all the interfaces to it and checking that broadcasting won't send the packet
+ * to neither the ingress bond device (bond2) or its slave (veth2_1).
+ */
+static void test_xdp_bonding_redirect_multi(struct skeletons *skeletons)
+{
+	static const char * const ifaces[] = {"bond2", "veth2_1", "veth2_2"};
+	int veth1_1_rx, veth1_2_rx;
+	int err;
+
+	if (bonding_setup(skeletons, BOND_MODE_ROUNDROBIN, BOND_XMIT_POLICY_LAYER23,
+			  BOND_ONE_NO_ATTACH))
+		goto out;
+
+
+	if (!ASSERT_OK(setns_by_name("ns_dst"), "could not set netns to ns_dst"))
+		goto out;
+
+	/* populate the devmap with the relevant interfaces */
+	for (int i = 0; i < ARRAY_SIZE(ifaces); i++) {
+		int ifindex = if_nametoindex(ifaces[i]);
+		int map_fd = bpf_map__fd(skeletons->xdp_redirect_multi_kern->maps.map_all);
+
+		if (!ASSERT_GT(ifindex, 0, "could not get interface index"))
+			goto out;
+
+		err = bpf_map_update_elem(map_fd, &ifindex, &ifindex, 0);
+		if (!ASSERT_OK(err, "add interface to map_all"))
+			goto out;
+	}
+
+	if (xdp_attach(skeletons,
+		       skeletons->xdp_redirect_multi_kern->progs.xdp_redirect_map_multi_prog,
+		       "bond2"))
+		goto out;
+
+	restore_root_netns();
+
+	if (send_udp_packets(BOND_MODE_ROUNDROBIN))
+		goto out;
+
+	veth1_1_rx = get_rx_packets("veth1_1");
+	veth1_2_rx = get_rx_packets("veth1_2");
+
+	ASSERT_EQ(veth1_1_rx, 0, "expected no packets on veth1_1");
+	ASSERT_GE(veth1_2_rx, NPACKETS, "expected packets on veth1_2");
+
+out:
+	restore_root_netns();
+	bonding_cleanup(skeletons);
+}
+
+/* Test that XDP programs cannot be attached to both the bond master and slaves simultaneously */
+static void test_xdp_bonding_attach(struct skeletons *skeletons)
+{
+	struct bpf_link *link = NULL;
+	struct bpf_link *link2 = NULL;
+	int veth, bond;
+	int err;
+
+	if (!ASSERT_OK(system("ip link add veth type veth"), "add veth"))
+		goto out;
+	if (!ASSERT_OK(system("ip link add bond type bond"), "add bond"))
+		goto out;
+
+	veth = if_nametoindex("veth");
+	if (!ASSERT_GE(veth, 0, "if_nametoindex veth"))
+		goto out;
+	bond = if_nametoindex("bond");
+	if (!ASSERT_GE(bond, 0, "if_nametoindex bond"))
+		goto out;
+
+	/* enslaving with a XDP program loaded fails */
+	link = bpf_program__attach_xdp(skeletons->xdp_dummy->progs.xdp_dummy_prog, veth);
+	if (!ASSERT_OK_PTR(link, "attach program to veth"))
+		goto out;
+
+	err = system("ip link set veth master bond");
+	if (!ASSERT_NEQ(err, 0, "attaching slave with xdp program expected to fail"))
+		goto out;
+
+	bpf_link__destroy(link);
+	link = NULL;
+
+	err = system("ip link set veth master bond");
+	if (!ASSERT_OK(err, "set veth master"))
+		goto out;
+
+	/* attaching to slave when master has no program is allowed */
+	link = bpf_program__attach_xdp(skeletons->xdp_dummy->progs.xdp_dummy_prog, veth);
+	if (!ASSERT_OK_PTR(link, "attach program to slave when enslaved"))
+		goto out;
+
+	/* attaching to master not allowed when slave has program loaded */
+	link2 = bpf_program__attach_xdp(skeletons->xdp_dummy->progs.xdp_dummy_prog, bond);
+	if (!ASSERT_ERR_PTR(link2, "attach program to master when slave has program"))
+		goto out;
+
+	bpf_link__destroy(link);
+	link = NULL;
+
+	/* attaching XDP program to master allowed when slave has no program */
+	link = bpf_program__attach_xdp(skeletons->xdp_dummy->progs.xdp_dummy_prog, bond);
+	if (!ASSERT_OK_PTR(link, "attach program to master"))
+		goto out;
+
+	/* attaching to slave not allowed when master has program loaded */
+	link2 = bpf_program__attach_xdp(skeletons->xdp_dummy->progs.xdp_dummy_prog, bond);
+	ASSERT_ERR_PTR(link2, "attach program to slave when master has program");
+
+out:
+	bpf_link__destroy(link);
+	bpf_link__destroy(link2);
+
+	system("ip link del veth");
+	system("ip link del bond");
+}
+
+static int libbpf_debug_print(enum libbpf_print_level level,
+			      const char *format, va_list args)
+{
+	if (level != LIBBPF_WARN)
+		vprintf(format, args);
+	return 0;
+}
+
+struct bond_test_case {
+	char *name;
+	int mode;
+	int xmit_policy;
+};
+
+static struct bond_test_case bond_test_cases[] = {
+	{ "xdp_bonding_roundrobin", BOND_MODE_ROUNDROBIN, BOND_XMIT_POLICY_LAYER23, },
+	{ "xdp_bonding_activebackup", BOND_MODE_ACTIVEBACKUP, BOND_XMIT_POLICY_LAYER23 },
+
+	{ "xdp_bonding_xor_layer2", BOND_MODE_XOR, BOND_XMIT_POLICY_LAYER2, },
+	{ "xdp_bonding_xor_layer23", BOND_MODE_XOR, BOND_XMIT_POLICY_LAYER23, },
+	{ "xdp_bonding_xor_layer34", BOND_MODE_XOR, BOND_XMIT_POLICY_LAYER34, },
+};
+
+void test_xdp_bonding(void)
+{
+	libbpf_print_fn_t old_print_fn;
+	struct skeletons skeletons = {};
+	int i;
+
+	old_print_fn = libbpf_set_print(libbpf_debug_print);
+
+	root_netns_fd = open("/proc/self/ns/net", O_RDONLY);
+	if (!ASSERT_GE(root_netns_fd, 0, "open /proc/self/ns/net"))
+		goto out;
+
+	skeletons.xdp_dummy = xdp_dummy__open_and_load();
+	if (!ASSERT_OK_PTR(skeletons.xdp_dummy, "xdp_dummy__open_and_load"))
+		goto out;
+
+	skeletons.xdp_tx = xdp_tx__open_and_load();
+	if (!ASSERT_OK_PTR(skeletons.xdp_tx, "xdp_tx__open_and_load"))
+		goto out;
+
+	skeletons.xdp_redirect_multi_kern = xdp_redirect_multi_kern__open_and_load();
+	if (!ASSERT_OK_PTR(skeletons.xdp_redirect_multi_kern,
+			   "xdp_redirect_multi_kern__open_and_load"))
+		goto out;
+
+	if (test__start_subtest("xdp_bonding_attach"))
+		test_xdp_bonding_attach(&skeletons);
+
+	for (i = 0; i < ARRAY_SIZE(bond_test_cases); i++) {
+		struct bond_test_case *test_case = &bond_test_cases[i];
+
+		if (test__start_subtest(test_case->name))
+			test_xdp_bonding_with_mode(
+				&skeletons,
+				test_case->mode,
+				test_case->xmit_policy);
+	}
+
+	if (test__start_subtest("xdp_bonding_redirect_multi"))
+		test_xdp_bonding_redirect_multi(&skeletons);
+
+out:
+	xdp_dummy__destroy(skeletons.xdp_dummy);
+	xdp_tx__destroy(skeletons.xdp_tx);
+	xdp_redirect_multi_kern__destroy(skeletons.xdp_redirect_multi_kern);
+
+	libbpf_set_print(old_print_fn);
+	if (root_netns_fd >= 0)
+		close(root_netns_fd);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c b/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c
new file mode 100644
index 000000000000..ab4952b9fb1d
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_context_test_run.c
@@ -0,0 +1,105 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <test_progs.h>
+#include <network_helpers.h>
+#include "test_xdp_context_test_run.skel.h"
+
+void test_xdp_context_error(int prog_fd, struct bpf_test_run_opts opts,
+			    __u32 data_meta, __u32 data, __u32 data_end,
+			    __u32 ingress_ifindex, __u32 rx_queue_index,
+			    __u32 egress_ifindex)
+{
+	struct xdp_md ctx = {
+		.data = data,
+		.data_end = data_end,
+		.data_meta = data_meta,
+		.ingress_ifindex = ingress_ifindex,
+		.rx_queue_index = rx_queue_index,
+		.egress_ifindex = egress_ifindex,
+	};
+	int err;
+
+	opts.ctx_in = &ctx;
+	opts.ctx_size_in = sizeof(ctx);
+	err = bpf_prog_test_run_opts(prog_fd, &opts);
+	ASSERT_EQ(errno, EINVAL, "errno-EINVAL");
+	ASSERT_ERR(err, "bpf_prog_test_run");
+}
+
+void test_xdp_context_test_run(void)
+{
+	struct test_xdp_context_test_run *skel = NULL;
+	char data[sizeof(pkt_v4) + sizeof(__u32)];
+	char bad_ctx[sizeof(struct xdp_md) + 1];
+	struct xdp_md ctx_in, ctx_out;
+	DECLARE_LIBBPF_OPTS(bpf_test_run_opts, opts,
+			    .data_in = &data,
+			    .data_size_in = sizeof(data),
+			    .ctx_out = &ctx_out,
+			    .ctx_size_out = sizeof(ctx_out),
+			    .repeat = 1,
+		);
+	int err, prog_fd;
+
+	skel = test_xdp_context_test_run__open_and_load();
+	if (!ASSERT_OK_PTR(skel, "skel"))
+		return;
+	prog_fd = bpf_program__fd(skel->progs.xdp_context);
+
+	/* Data past the end of the kernel's struct xdp_md must be 0 */
+	bad_ctx[sizeof(bad_ctx) - 1] = 1;
+	opts.ctx_in = bad_ctx;
+	opts.ctx_size_in = sizeof(bad_ctx);
+	err = bpf_prog_test_run_opts(prog_fd, &opts);
+	ASSERT_EQ(errno, E2BIG, "extradata-errno");
+	ASSERT_ERR(err, "bpf_prog_test_run(extradata)");
+
+	*(__u32 *)data = XDP_PASS;
+	*(struct ipv4_packet *)(data + sizeof(__u32)) = pkt_v4;
+	opts.ctx_in = &ctx_in;
+	opts.ctx_size_in = sizeof(ctx_in);
+	memset(&ctx_in, 0, sizeof(ctx_in));
+	ctx_in.data_meta = 0;
+	ctx_in.data = sizeof(__u32);
+	ctx_in.data_end = ctx_in.data + sizeof(pkt_v4);
+	err = bpf_prog_test_run_opts(prog_fd, &opts);
+	ASSERT_OK(err, "bpf_prog_test_run(valid)");
+	ASSERT_EQ(opts.retval, XDP_PASS, "valid-retval");
+	ASSERT_EQ(opts.data_size_out, sizeof(pkt_v4), "valid-datasize");
+	ASSERT_EQ(opts.ctx_size_out, opts.ctx_size_in, "valid-ctxsize");
+	ASSERT_EQ(ctx_out.data_meta, 0, "valid-datameta");
+	ASSERT_EQ(ctx_out.data, 0, "valid-data");
+	ASSERT_EQ(ctx_out.data_end, sizeof(pkt_v4), "valid-dataend");
+
+	/* Meta data's size must be a multiple of 4 */
+	test_xdp_context_error(prog_fd, opts, 0, 1, sizeof(data), 0, 0, 0);
+
+	/* data_meta must reference the start of data */
+	test_xdp_context_error(prog_fd, opts, 4, sizeof(__u32), sizeof(data),
+			       0, 0, 0);
+
+	/* Meta data must be 32 bytes or smaller */
+	test_xdp_context_error(prog_fd, opts, 0, 36, sizeof(data), 0, 0, 0);
+
+	/* Total size of data must match data_end - data_meta */
+	test_xdp_context_error(prog_fd, opts, 0, sizeof(__u32),
+			       sizeof(data) - 1, 0, 0, 0);
+	test_xdp_context_error(prog_fd, opts, 0, sizeof(__u32),
+			       sizeof(data) + 1, 0, 0, 0);
+
+	/* RX queue cannot be specified without specifying an ingress */
+	test_xdp_context_error(prog_fd, opts, 0, sizeof(__u32), sizeof(data),
+			       0, 1, 0);
+
+	/* Interface 1 is always the loopback interface which always has only
+	 * one RX queue (index 0). This makes index 1 an invalid rx queue index
+	 * for interface 1.
+	 */
+	test_xdp_context_error(prog_fd, opts, 0, sizeof(__u32), sizeof(data),
+			       1, 1, 0);
+
+	/* The egress cannot be specified */
+	test_xdp_context_error(prog_fd, opts, 0, sizeof(__u32), sizeof(data),
+			       0, 0, 1);
+
+	test_xdp_context_test_run__destroy(skel);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c
index 0176573fe4e7..8755effd80b0 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_cpumap_attach.c
@@ -7,64 +7,53 @@
 
 #define IFINDEX_LO	1
 
-void test_xdp_with_cpumap_helpers(void)
+void test_xdp_cpumap_attach(void)
 {
 	struct test_xdp_with_cpumap_helpers *skel;
 	struct bpf_prog_info info = {};
+	__u32 len = sizeof(info);
 	struct bpf_cpumap_val val = {
 		.qsize = 192,
 	};
-	__u32 duration = 0, idx = 0;
-	__u32 len = sizeof(info);
 	int err, prog_fd, map_fd;
+	__u32 idx = 0;
 
 	skel = test_xdp_with_cpumap_helpers__open_and_load();
-	if (CHECK_FAIL(!skel)) {
-		perror("test_xdp_with_cpumap_helpers__open_and_load");
+	if (!ASSERT_OK_PTR(skel, "test_xdp_with_cpumap_helpers__open_and_load"))
 		return;
-	}
 
-	/* can not attach program with cpumaps that allow programs
-	 * as xdp generic
-	 */
 	prog_fd = bpf_program__fd(skel->progs.xdp_redir_prog);
 	err = bpf_set_link_xdp_fd(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE);
-	CHECK(err == 0, "Generic attach of program with 8-byte CPUMAP",
-	      "should have failed\n");
+	if (!ASSERT_OK(err, "Generic attach of program with 8-byte CPUMAP"))
+		goto out_close;
+
+	err = bpf_set_link_xdp_fd(IFINDEX_LO, -1, XDP_FLAGS_SKB_MODE);
+	ASSERT_OK(err, "XDP program detach");
 
 	prog_fd = bpf_program__fd(skel->progs.xdp_dummy_cm);
 	map_fd = bpf_map__fd(skel->maps.cpu_map);
 	err = bpf_obj_get_info_by_fd(prog_fd, &info, &len);
-	if (CHECK_FAIL(err))
+	if (!ASSERT_OK(err, "bpf_obj_get_info_by_fd"))
 		goto out_close;
 
 	val.bpf_prog.fd = prog_fd;
 	err = bpf_map_update_elem(map_fd, &idx, &val, 0);
-	CHECK(err, "Add program to cpumap entry", "err %d errno %d\n",
-	      err, errno);
+	ASSERT_OK(err, "Add program to cpumap entry");
 
 	err = bpf_map_lookup_elem(map_fd, &idx, &val);
-	CHECK(err, "Read cpumap entry", "err %d errno %d\n", err, errno);
-	CHECK(info.id != val.bpf_prog.id, "Expected program id in cpumap entry",
-	      "expected %u read %u\n", info.id, val.bpf_prog.id);
+	ASSERT_OK(err, "Read cpumap entry");
+	ASSERT_EQ(info.id, val.bpf_prog.id, "Match program id to cpumap entry prog_id");
 
 	/* can not attach BPF_XDP_CPUMAP program to a device */
 	err = bpf_set_link_xdp_fd(IFINDEX_LO, prog_fd, XDP_FLAGS_SKB_MODE);
-	CHECK(err == 0, "Attach of BPF_XDP_CPUMAP program",
-	      "should have failed\n");
+	if (!ASSERT_NEQ(err, 0, "Attach of BPF_XDP_CPUMAP program"))
+		bpf_set_link_xdp_fd(IFINDEX_LO, -1, XDP_FLAGS_SKB_MODE);
 
 	val.qsize = 192;
 	val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_prog);
 	err = bpf_map_update_elem(map_fd, &idx, &val, 0);
-	CHECK(err == 0, "Add non-BPF_XDP_CPUMAP program to cpumap entry",
-	      "should have failed\n");
+	ASSERT_NEQ(err, 0, "Add non-BPF_XDP_CPUMAP program to cpumap entry");
 
 out_close:
 	test_xdp_with_cpumap_helpers__destroy(skel);
 }
-
-void test_xdp_cpumap_attach(void)
-{
-	if (test__start_subtest("cpumap_with_progs"))
-		test_xdp_with_cpumap_helpers();
-}
diff --git a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
index 88ef3ec8ac4c..c72af030ff10 100644
--- a/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
+++ b/tools/testing/selftests/bpf/prog_tests/xdp_devmap_attach.c
@@ -16,50 +16,45 @@ void test_xdp_with_devmap_helpers(void)
 		.ifindex = IFINDEX_LO,
 	};
 	__u32 len = sizeof(info);
-	__u32 duration = 0, idx = 0;
 	int err, dm_fd, map_fd;
+	__u32 idx = 0;
 
 
 	skel = test_xdp_with_devmap_helpers__open_and_load();
-	if (CHECK_FAIL(!skel)) {
-		perror("test_xdp_with_devmap_helpers__open_and_load");
+	if (!ASSERT_OK_PTR(skel, "test_xdp_with_devmap_helpers__open_and_load"))
 		return;
-	}
 
-	/* can not attach program with DEVMAPs that allow programs
-	 * as xdp generic
-	 */
 	dm_fd = bpf_program__fd(skel->progs.xdp_redir_prog);
 	err = bpf_set_link_xdp_fd(IFINDEX_LO, dm_fd, XDP_FLAGS_SKB_MODE);
-	CHECK(err == 0, "Generic attach of program with 8-byte devmap",
-	      "should have failed\n");
+	if (!ASSERT_OK(err, "Generic attach of program with 8-byte devmap"))
+		goto out_close;
+
+	err = bpf_set_link_xdp_fd(IFINDEX_LO, -1, XDP_FLAGS_SKB_MODE);
+	ASSERT_OK(err, "XDP program detach");
 
 	dm_fd = bpf_program__fd(skel->progs.xdp_dummy_dm);
 	map_fd = bpf_map__fd(skel->maps.dm_ports);
 	err = bpf_obj_get_info_by_fd(dm_fd, &info, &len);
-	if (CHECK_FAIL(err))
+	if (!ASSERT_OK(err, "bpf_obj_get_info_by_fd"))
 		goto out_close;
 
 	val.bpf_prog.fd = dm_fd;
 	err = bpf_map_update_elem(map_fd, &idx, &val, 0);
-	CHECK(err, "Add program to devmap entry",
-	      "err %d errno %d\n", err, errno);
+	ASSERT_OK(err, "Add program to devmap entry");
 
 	err = bpf_map_lookup_elem(map_fd, &idx, &val);
-	CHECK(err, "Read devmap entry", "err %d errno %d\n", err, errno);
-	CHECK(info.id != val.bpf_prog.id, "Expected program id in devmap entry",
-	      "expected %u read %u\n", info.id, val.bpf_prog.id);
+	ASSERT_OK(err, "Read devmap entry");
+	ASSERT_EQ(info.id, val.bpf_prog.id, "Match program id to devmap entry prog_id");
 
 	/* can not attach BPF_XDP_DEVMAP program to a device */
 	err = bpf_set_link_xdp_fd(IFINDEX_LO, dm_fd, XDP_FLAGS_SKB_MODE);
-	CHECK(err == 0, "Attach of BPF_XDP_DEVMAP program",
-	      "should have failed\n");
+	if (!ASSERT_NEQ(err, 0, "Attach of BPF_XDP_DEVMAP program"))
+		bpf_set_link_xdp_fd(IFINDEX_LO, -1, XDP_FLAGS_SKB_MODE);
 
 	val.ifindex = 1;
 	val.bpf_prog.fd = bpf_program__fd(skel->progs.xdp_dummy_prog);
 	err = bpf_map_update_elem(map_fd, &idx, &val, 0);
-	CHECK(err == 0, "Add non-BPF_XDP_DEVMAP program to devmap entry",
-	      "should have failed\n");
+	ASSERT_NEQ(err, 0, "Add non-BPF_XDP_DEVMAP program to devmap entry");
 
 out_close:
 	test_xdp_with_devmap_helpers__destroy(skel);
@@ -68,12 +63,10 @@ out_close:
 void test_neg_xdp_devmap_helpers(void)
 {
 	struct test_xdp_devmap_helpers *skel;
-	__u32 duration = 0;
 
 	skel = test_xdp_devmap_helpers__open_and_load();
-	if (CHECK(skel,
-		  "Load of XDP program accessing egress ifindex without attach type",
-		  "should have failed\n")) {
+	if (!ASSERT_EQ(skel, NULL,
+		    "Load of XDP program accessing egress ifindex without attach type")) {
 		test_xdp_devmap_helpers__destroy(skel);
 	}
 }
diff --git a/tools/testing/selftests/bpf/progs/bpf_dctcp.c b/tools/testing/selftests/bpf/progs/bpf_dctcp.c
index fd42247da8b4..9573be6122be 100644
--- a/tools/testing/selftests/bpf/progs/bpf_dctcp.c
+++ b/tools/testing/selftests/bpf/progs/bpf_dctcp.c
@@ -17,6 +17,11 @@
 
 char _license[] SEC("license") = "GPL";
 
+volatile const char fallback[TCP_CA_NAME_MAX];
+const char bpf_dctcp[] = "bpf_dctcp";
+const char tcp_cdg[] = "cdg";
+char cc_res[TCP_CA_NAME_MAX];
+int tcp_cdg_res = 0;
 int stg_result = 0;
 
 struct {
@@ -57,6 +62,26 @@ void BPF_PROG(dctcp_init, struct sock *sk)
 	struct dctcp *ca = inet_csk_ca(sk);
 	int *stg;
 
+	if (!(tp->ecn_flags & TCP_ECN_OK) && fallback[0]) {
+		/* Switch to fallback */
+		bpf_setsockopt(sk, SOL_TCP, TCP_CONGESTION,
+			       (void *)fallback, sizeof(fallback));
+		/* Switch back to myself which the bpf trampoline
+		 * stopped calling dctcp_init recursively.
+		 */
+		bpf_setsockopt(sk, SOL_TCP, TCP_CONGESTION,
+			       (void *)bpf_dctcp, sizeof(bpf_dctcp));
+		/* Switch back to fallback */
+		bpf_setsockopt(sk, SOL_TCP, TCP_CONGESTION,
+			       (void *)fallback, sizeof(fallback));
+		/* Expecting -ENOTSUPP for tcp_cdg_res */
+		tcp_cdg_res = bpf_setsockopt(sk, SOL_TCP, TCP_CONGESTION,
+					     (void *)tcp_cdg, sizeof(tcp_cdg));
+		bpf_getsockopt(sk, SOL_TCP, TCP_CONGESTION,
+			       (void *)cc_res, sizeof(cc_res));
+		return;
+	}
+
 	ca->prior_rcv_nxt = tp->rcv_nxt;
 	ca->dctcp_alpha = min(dctcp_alpha_on_init, DCTCP_MAX_ALPHA);
 	ca->loss_cwnd = 0;
diff --git a/tools/testing/selftests/bpf/progs/bpf_dctcp_release.c b/tools/testing/selftests/bpf/progs/bpf_dctcp_release.c
new file mode 100644
index 000000000000..d836f7c372f0
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/bpf_dctcp_release.c
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include <stddef.h>
+#include <linux/bpf.h>
+#include <linux/types.h>
+#include <linux/stddef.h>
+#include <linux/tcp.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+#include "bpf_tcp_helpers.h"
+
+char _license[] SEC("license") = "GPL";
+const char cubic[] = "cubic";
+
+void BPF_STRUCT_OPS(dctcp_nouse_release, struct sock *sk)
+{
+	bpf_setsockopt(sk, SOL_TCP, TCP_CONGESTION,
+		       (void *)cubic, sizeof(cubic));
+}
+
+SEC(".struct_ops")
+struct tcp_congestion_ops dctcp_rel = {
+	.release	= (void *)dctcp_nouse_release,
+	.name		= "bpf_dctcp_rel",
+};
diff --git a/tools/testing/selftests/bpf/progs/bpf_iter.h b/tools/testing/selftests/bpf/progs/bpf_iter.h
index 3d83b185c4bc..8cfaeba1ddbf 100644
--- a/tools/testing/selftests/bpf/progs/bpf_iter.h
+++ b/tools/testing/selftests/bpf/progs/bpf_iter.h
@@ -12,6 +12,7 @@
 #define tcp6_sock tcp6_sock___not_used
 #define bpf_iter__udp bpf_iter__udp___not_used
 #define udp6_sock udp6_sock___not_used
+#define bpf_iter__unix bpf_iter__unix___not_used
 #define bpf_iter__bpf_map_elem bpf_iter__bpf_map_elem___not_used
 #define bpf_iter__bpf_sk_storage_map bpf_iter__bpf_sk_storage_map___not_used
 #define bpf_iter__sockmap bpf_iter__sockmap___not_used
@@ -32,6 +33,7 @@
 #undef tcp6_sock
 #undef bpf_iter__udp
 #undef udp6_sock
+#undef bpf_iter__unix
 #undef bpf_iter__bpf_map_elem
 #undef bpf_iter__bpf_sk_storage_map
 #undef bpf_iter__sockmap
@@ -103,6 +105,12 @@ struct udp6_sock {
 	struct ipv6_pinfo inet6;
 } __attribute__((preserve_access_index));
 
+struct bpf_iter__unix {
+	struct bpf_iter_meta *meta;
+	struct unix_sock *unix_sk;
+	uid_t uid;
+} __attribute__((preserve_access_index));
+
 struct bpf_iter__bpf_map_elem {
 	struct bpf_iter_meta *meta;
 	struct bpf_map *map;
diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_setsockopt.c b/tools/testing/selftests/bpf/progs/bpf_iter_setsockopt.c
new file mode 100644
index 000000000000..b77adfd55d73
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/bpf_iter_setsockopt.c
@@ -0,0 +1,72 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include "bpf_iter.h"
+#include "bpf_tracing_net.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_endian.h>
+
+#define bpf_tcp_sk(skc)	({				\
+	struct sock_common *_skc = skc;			\
+	sk = NULL;					\
+	tp = NULL;					\
+	if (_skc) {					\
+		tp = bpf_skc_to_tcp_sock(_skc);		\
+		sk = (struct sock *)tp;			\
+	}						\
+	tp;						\
+})
+
+unsigned short reuse_listen_hport = 0;
+unsigned short listen_hport = 0;
+char cubic_cc[TCP_CA_NAME_MAX] = "bpf_cubic";
+char dctcp_cc[TCP_CA_NAME_MAX] = "bpf_dctcp";
+bool random_retry = false;
+
+static bool tcp_cc_eq(const char *a, const char *b)
+{
+	int i;
+
+	for (i = 0; i < TCP_CA_NAME_MAX; i++) {
+		if (a[i] != b[i])
+			return false;
+		if (!a[i])
+			break;
+	}
+
+	return true;
+}
+
+SEC("iter/tcp")
+int change_tcp_cc(struct bpf_iter__tcp *ctx)
+{
+	char cur_cc[TCP_CA_NAME_MAX];
+	struct tcp_sock *tp;
+	struct sock *sk;
+	int ret;
+
+	if (!bpf_tcp_sk(ctx->sk_common))
+		return 0;
+
+	if (sk->sk_family != AF_INET6 ||
+	    (sk->sk_state != TCP_LISTEN &&
+	     sk->sk_state != TCP_ESTABLISHED) ||
+	    (sk->sk_num != reuse_listen_hport &&
+	     sk->sk_num != listen_hport &&
+	     bpf_ntohs(sk->sk_dport) != listen_hport))
+		return 0;
+
+	if (bpf_getsockopt(tp, SOL_TCP, TCP_CONGESTION,
+			   cur_cc, sizeof(cur_cc)))
+		return 0;
+
+	if (!tcp_cc_eq(cur_cc, cubic_cc))
+		return 0;
+
+	if (random_retry && bpf_get_prandom_u32() % 4 == 1)
+		return 1;
+
+	bpf_setsockopt(tp, SOL_TCP, TCP_CONGESTION, dctcp_cc, sizeof(dctcp_cc));
+	return 0;
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_tcp4.c b/tools/testing/selftests/bpf/progs/bpf_iter_tcp4.c
index 2e4775c35414..92267abb462f 100644
--- a/tools/testing/selftests/bpf/progs/bpf_iter_tcp4.c
+++ b/tools/testing/selftests/bpf/progs/bpf_iter_tcp4.c
@@ -121,7 +121,7 @@ static int dump_tcp_sock(struct seq_file *seq, struct tcp_sock *tp,
 	}
 
 	BPF_SEQ_PRINTF(seq, "%4d: %08X:%04X %08X:%04X ",
-		       seq_num, src, srcp, destp, destp);
+		       seq_num, src, srcp, dest, destp);
 	BPF_SEQ_PRINTF(seq, "%02X %08X:%08X %02X:%08lX %08X %5u %8d %lu %d ",
 		       state,
 		       tp->write_seq - tp->snd_una, rx_queue,
diff --git a/tools/testing/selftests/bpf/progs/bpf_iter_unix.c b/tools/testing/selftests/bpf/progs/bpf_iter_unix.c
new file mode 100644
index 000000000000..94423902685d
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/bpf_iter_unix.c
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright Amazon.com Inc. or its affiliates. */
+#include "bpf_iter.h"
+#include "bpf_tracing_net.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_endian.h>
+
+char _license[] SEC("license") = "GPL";
+
+static long sock_i_ino(const struct sock *sk)
+{
+	const struct socket *sk_socket = sk->sk_socket;
+	const struct inode *inode;
+	unsigned long ino;
+
+	if (!sk_socket)
+		return 0;
+
+	inode = &container_of(sk_socket, struct socket_alloc, socket)->vfs_inode;
+	bpf_probe_read_kernel(&ino, sizeof(ino), &inode->i_ino);
+	return ino;
+}
+
+SEC("iter/unix")
+int dump_unix(struct bpf_iter__unix *ctx)
+{
+	struct unix_sock *unix_sk = ctx->unix_sk;
+	struct sock *sk = (struct sock *)unix_sk;
+	struct seq_file *seq;
+	__u32 seq_num;
+
+	if (!unix_sk)
+		return 0;
+
+	seq = ctx->meta->seq;
+	seq_num = ctx->meta->seq_num;
+	if (seq_num == 0)
+		BPF_SEQ_PRINTF(seq, "Num               RefCount Protocol Flags    Type St    Inode Path\n");
+
+	BPF_SEQ_PRINTF(seq, "%pK: %08X %08X %08X %04X %02X %8lu",
+		       unix_sk,
+		       sk->sk_refcnt.refs.counter,
+		       0,
+		       sk->sk_state == TCP_LISTEN ? __SO_ACCEPTCON : 0,
+		       sk->sk_type,
+		       sk->sk_socket ?
+		       (sk->sk_state == TCP_ESTABLISHED ? SS_CONNECTED : SS_UNCONNECTED) :
+		       (sk->sk_state == TCP_ESTABLISHED ? SS_CONNECTING : SS_DISCONNECTING),
+		       sock_i_ino(sk));
+
+	if (unix_sk->addr) {
+		if (!UNIX_ABSTRACT(unix_sk)) {
+			BPF_SEQ_PRINTF(seq, " %s", unix_sk->addr->name->sun_path);
+		} else {
+			/* The name of the abstract UNIX domain socket starts
+			 * with '\0' and can contain '\0'.  The null bytes
+			 * should be escaped as done in unix_seq_show().
+			 */
+			__u64 i, len;
+
+			len = unix_sk->addr->len - sizeof(short);
+
+			BPF_SEQ_PRINTF(seq, " @");
+
+			for (i = 1; i < len; i++) {
+				/* unix_mkname() tests this upper bound. */
+				if (i >= sizeof(struct sockaddr_un))
+					break;
+
+				BPF_SEQ_PRINTF(seq, "%c",
+					       unix_sk->addr->name->sun_path[i] ?:
+					       '@');
+			}
+		}
+	}
+
+	BPF_SEQ_PRINTF(seq, "\n");
+
+	return 0;
+}
diff --git a/tools/testing/selftests/bpf/progs/bpf_tracing_net.h b/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
index 01378911252b..eef5646ddb19 100644
--- a/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
+++ b/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
@@ -5,6 +5,14 @@
 #define AF_INET			2
 #define AF_INET6		10
 
+#define __SO_ACCEPTCON		(1 << 16)
+#define UNIX_HASH_SIZE		256
+#define UNIX_ABSTRACT(unix_sk)	(unix_sk->addr->hash < UNIX_HASH_SIZE)
+
+#define SOL_TCP			6
+#define TCP_CONGESTION		13
+#define TCP_CA_NAME_MAX		16
+
 #define ICSK_TIME_RETRANS	1
 #define ICSK_TIME_PROBE0	3
 #define ICSK_TIME_LOSS_PROBE	5
@@ -32,6 +40,8 @@
 #define ir_v6_rmt_addr		req.__req_common.skc_v6_daddr
 #define ir_v6_loc_addr		req.__req_common.skc_v6_rcv_saddr
 
+#define sk_num			__sk_common.skc_num
+#define sk_dport		__sk_common.skc_dport
 #define sk_family		__sk_common.skc_family
 #define sk_rmem_alloc		sk_backlog.rmem_alloc
 #define sk_refcnt		__sk_common.skc_refcnt
diff --git a/tools/testing/selftests/bpf/progs/get_func_ip_test.c b/tools/testing/selftests/bpf/progs/get_func_ip_test.c
new file mode 100644
index 000000000000..a587aeca5ae0
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/get_func_ip_test.c
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+char _license[] SEC("license") = "GPL";
+
+extern const void bpf_fentry_test1 __ksym;
+extern const void bpf_fentry_test2 __ksym;
+extern const void bpf_fentry_test3 __ksym;
+extern const void bpf_fentry_test4 __ksym;
+extern const void bpf_modify_return_test __ksym;
+extern const void bpf_fentry_test6 __ksym;
+extern const void bpf_fentry_test7 __ksym;
+
+__u64 test1_result = 0;
+SEC("fentry/bpf_fentry_test1")
+int BPF_PROG(test1, int a)
+{
+	__u64 addr = bpf_get_func_ip(ctx);
+
+	test1_result = (const void *) addr == &bpf_fentry_test1;
+	return 0;
+}
+
+__u64 test2_result = 0;
+SEC("fexit/bpf_fentry_test2")
+int BPF_PROG(test2, int a)
+{
+	__u64 addr = bpf_get_func_ip(ctx);
+
+	test2_result = (const void *) addr == &bpf_fentry_test2;
+	return 0;
+}
+
+__u64 test3_result = 0;
+SEC("kprobe/bpf_fentry_test3")
+int test3(struct pt_regs *ctx)
+{
+	__u64 addr = bpf_get_func_ip(ctx);
+
+	test3_result = (const void *) addr == &bpf_fentry_test3;
+	return 0;
+}
+
+__u64 test4_result = 0;
+SEC("kretprobe/bpf_fentry_test4")
+int BPF_KRETPROBE(test4)
+{
+	__u64 addr = bpf_get_func_ip(ctx);
+
+	test4_result = (const void *) addr == &bpf_fentry_test4;
+	return 0;
+}
+
+__u64 test5_result = 0;
+SEC("fmod_ret/bpf_modify_return_test")
+int BPF_PROG(test5, int a, int *b, int ret)
+{
+	__u64 addr = bpf_get_func_ip(ctx);
+
+	test5_result = (const void *) addr == &bpf_modify_return_test;
+	return ret;
+}
+
+__u64 test6_result = 0;
+SEC("kprobe/bpf_fentry_test6+0x5")
+int test6(struct pt_regs *ctx)
+{
+	__u64 addr = bpf_get_func_ip(ctx);
+
+	test6_result = (const void *) addr == &bpf_fentry_test6 + 5;
+	return 0;
+}
+
+__u64 test7_result = 0;
+SEC("kprobe/bpf_fentry_test7+5")
+int test7(struct pt_regs *ctx)
+{
+	__u64 addr = bpf_get_func_ip(ctx);
+
+	test7_result = (const void *) addr == &bpf_fentry_test7 + 5;
+	return 0;
+}
diff --git a/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c b/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c
index b2dcb7d9cb03..5fbd9e232d44 100644
--- a/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c
+++ b/tools/testing/selftests/bpf/progs/kfunc_call_test_subprog.c
@@ -9,7 +9,7 @@ extern __u64 bpf_kfunc_call_test1(struct sock *sk, __u32 a, __u64 b,
 				  __u32 c, __u64 d) __ksym;
 extern struct sock *bpf_kfunc_call_test3(struct sock *sk) __ksym;
 int active_res = -1;
-int sk_state = -1;
+int sk_state_res = -1;
 
 int __noinline f1(struct __sk_buff *skb)
 {
@@ -28,7 +28,7 @@ int __noinline f1(struct __sk_buff *skb)
 	if (active)
 		active_res = *active;
 
-	sk_state = bpf_kfunc_call_test3((struct sock *)sk)->__sk_common.skc_state;
+	sk_state_res = bpf_kfunc_call_test3((struct sock *)sk)->sk_state;
 
 	return (__u32)bpf_kfunc_call_test1((struct sock *)sk, 1, 2, 3, 4);
 }
diff --git a/tools/testing/selftests/bpf/progs/netcnt_prog.c b/tools/testing/selftests/bpf/progs/netcnt_prog.c
index d071adf178bd..43649bce4c54 100644
--- a/tools/testing/selftests/bpf/progs/netcnt_prog.c
+++ b/tools/testing/selftests/bpf/progs/netcnt_prog.c
@@ -13,21 +13,21 @@
 struct {
 	__uint(type, BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE);
 	__type(key, struct bpf_cgroup_storage_key);
-	__type(value, struct percpu_net_cnt);
+	__type(value, union percpu_net_cnt);
 } percpu_netcnt SEC(".maps");
 
 struct {
 	__uint(type, BPF_MAP_TYPE_CGROUP_STORAGE);
 	__type(key, struct bpf_cgroup_storage_key);
-	__type(value, struct net_cnt);
+	__type(value, union net_cnt);
 } netcnt SEC(".maps");
 
 SEC("cgroup/skb")
 int bpf_nextcnt(struct __sk_buff *skb)
 {
-	struct percpu_net_cnt *percpu_cnt;
+	union percpu_net_cnt *percpu_cnt;
 	char fmt[] = "%d %llu %llu\n";
-	struct net_cnt *cnt;
+	union net_cnt *cnt;
 	__u64 ts, dt;
 	int ret;
 
diff --git a/tools/testing/selftests/bpf/progs/netns_cookie_prog.c b/tools/testing/selftests/bpf/progs/netns_cookie_prog.c
new file mode 100644
index 000000000000..aeff3a4f9287
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/netns_cookie_prog.c
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include "vmlinux.h"
+
+#include <bpf/bpf_helpers.h>
+
+#define AF_INET6 10
+
+struct {
+	__uint(type, BPF_MAP_TYPE_SK_STORAGE);
+	__uint(map_flags, BPF_F_NO_PREALLOC);
+	__type(key, int);
+	__type(value, int);
+} sockops_netns_cookies SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_SK_STORAGE);
+	__uint(map_flags, BPF_F_NO_PREALLOC);
+	__type(key, int);
+	__type(value, int);
+} sk_msg_netns_cookies SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_SOCKMAP);
+	__uint(max_entries, 2);
+	__type(key, __u32);
+	__type(value, __u64);
+} sock_map SEC(".maps");
+
+SEC("sockops")
+int get_netns_cookie_sockops(struct bpf_sock_ops *ctx)
+{
+	struct bpf_sock *sk = ctx->sk;
+	int *cookie;
+	__u32 key = 0;
+
+	if (ctx->family != AF_INET6)
+		return 1;
+
+	if (!sk)
+		return 1;
+
+	switch (ctx->op) {
+	case BPF_SOCK_OPS_TCP_CONNECT_CB:
+		cookie = bpf_sk_storage_get(&sockops_netns_cookies, sk, 0,
+					    BPF_SK_STORAGE_GET_F_CREATE);
+		if (!cookie)
+			return 1;
+
+		*cookie = bpf_get_netns_cookie(ctx);
+		break;
+	case BPF_SOCK_OPS_ACTIVE_ESTABLISHED_CB:
+		bpf_sock_map_update(ctx, &sock_map, &key, BPF_NOEXIST);
+		break;
+	default:
+		break;
+	}
+
+	return 1;
+}
+
+SEC("sk_msg")
+int get_netns_cookie_sk_msg(struct sk_msg_md *msg)
+{
+	struct bpf_sock *sk = msg->sk;
+	int *cookie;
+
+	if (msg->family != AF_INET6)
+		return 1;
+
+	if (!sk)
+		return 1;
+
+	cookie = bpf_sk_storage_get(&sk_msg_netns_cookies, sk, 0,
+				    BPF_SK_STORAGE_GET_F_CREATE);
+	if (!cookie)
+		return 1;
+
+	*cookie = bpf_get_netns_cookie(msg);
+
+	return 1;
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/sockopt_qos_to_cc.c b/tools/testing/selftests/bpf/progs/sockopt_qos_to_cc.c
new file mode 100644
index 000000000000..1bce83b6e3a7
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/sockopt_qos_to_cc.c
@@ -0,0 +1,39 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <string.h>
+#include <linux/tcp.h>
+#include <netinet/in.h>
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include "bpf_tcp_helpers.h"
+
+char _license[] SEC("license") = "GPL";
+
+SEC("cgroup/setsockopt")
+int sockopt_qos_to_cc(struct bpf_sockopt *ctx)
+{
+	void *optval_end = ctx->optval_end;
+	int *optval = ctx->optval;
+	char buf[TCP_CA_NAME_MAX];
+	char cc_reno[TCP_CA_NAME_MAX] = "reno";
+	char cc_cubic[TCP_CA_NAME_MAX] = "cubic";
+
+	if (ctx->level != SOL_IPV6 || ctx->optname != IPV6_TCLASS)
+		return 1;
+
+	if (optval + 1 > optval_end)
+		return 0; /* EPERM, bounds check */
+
+	if (bpf_getsockopt(ctx->sk, SOL_TCP, TCP_CONGESTION, &buf, sizeof(buf)))
+		return 0;
+
+	if (!tcp_cc_eq(buf, cc_cubic))
+		return 0;
+
+	if (*optval == 0x2d) {
+		if (bpf_setsockopt(ctx->sk, SOL_TCP, TCP_CONGESTION, &cc_reno,
+				sizeof(cc_reno)))
+			return 0;
+	}
+	return 1;
+}
diff --git a/tools/testing/selftests/bpf/progs/sockopt_sk.c b/tools/testing/selftests/bpf/progs/sockopt_sk.c
index 8acdb99b5959..79c8139b63b8 100644
--- a/tools/testing/selftests/bpf/progs/sockopt_sk.c
+++ b/tools/testing/selftests/bpf/progs/sockopt_sk.c
@@ -33,6 +33,14 @@ int _getsockopt(struct bpf_sockopt *ctx)
 	__u8 *optval = ctx->optval;
 	struct sockopt_sk *storage;
 
+	/* Make sure bpf_get_netns_cookie is callable.
+	 */
+	if (bpf_get_netns_cookie(NULL) == 0)
+		return 0;
+
+	if (bpf_get_netns_cookie(ctx) == 0)
+		return 0;
+
 	if (ctx->level == SOL_IP && ctx->optname == IP_TOS) {
 		/* Not interested in SOL_IP:IP_TOS;
 		 * let next BPF program in the cgroup chain or kernel
@@ -123,6 +131,14 @@ int _setsockopt(struct bpf_sockopt *ctx)
 	__u8 *optval = ctx->optval;
 	struct sockopt_sk *storage;
 
+	/* Make sure bpf_get_netns_cookie is callable.
+	 */
+	if (bpf_get_netns_cookie(NULL) == 0)
+		return 0;
+
+	if (bpf_get_netns_cookie(ctx) == 0)
+		return 0;
+
 	if (ctx->level == SOL_IP && ctx->optname == IP_TOS) {
 		/* Not interested in SOL_IP:IP_TOS;
 		 * let next BPF program in the cgroup chain or kernel
diff --git a/tools/testing/selftests/bpf/progs/test_bpf_cookie.c b/tools/testing/selftests/bpf/progs/test_bpf_cookie.c
new file mode 100644
index 000000000000..2d3a7710e2ce
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_bpf_cookie.c
@@ -0,0 +1,85 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+int my_tid;
+
+int kprobe_res;
+int kprobe_multi_res;
+int kretprobe_res;
+int uprobe_res;
+int uretprobe_res;
+int tp_res;
+int pe_res;
+
+static void update(void *ctx, int *res)
+{
+	if (my_tid != (u32)bpf_get_current_pid_tgid())
+		return;
+
+	*res |= bpf_get_attach_cookie(ctx);
+}
+
+SEC("kprobe/sys_nanosleep")
+int handle_kprobe(struct pt_regs *ctx)
+{
+	update(ctx, &kprobe_res);
+	return 0;
+}
+
+SEC("kretprobe/sys_nanosleep")
+int handle_kretprobe(struct pt_regs *ctx)
+{
+	update(ctx, &kretprobe_res);
+	return 0;
+}
+
+SEC("uprobe/trigger_func")
+int handle_uprobe(struct pt_regs *ctx)
+{
+	update(ctx, &uprobe_res);
+	return 0;
+}
+
+SEC("uretprobe/trigger_func")
+int handle_uretprobe(struct pt_regs *ctx)
+{
+	update(ctx, &uretprobe_res);
+	return 0;
+}
+
+/* bpf_prog_array, used by kernel internally to keep track of attached BPF
+ * programs to a given BPF hook (e.g., for tracepoints) doesn't allow the same
+ * BPF program to be attached multiple times. So have three identical copies
+ * ready to attach to the same tracepoint.
+ */
+SEC("tp/syscalls/sys_enter_nanosleep")
+int handle_tp1(struct pt_regs *ctx)
+{
+	update(ctx, &tp_res);
+	return 0;
+}
+SEC("tp/syscalls/sys_enter_nanosleep")
+int handle_tp2(struct pt_regs *ctx)
+{
+	update(ctx, &tp_res);
+	return 0;
+}
+SEC("tp/syscalls/sys_enter_nanosleep")
+int handle_tp3(void *ctx)
+{
+	update(ctx, &tp_res);
+	return 1;
+}
+
+SEC("perf_event")
+int handle_pe(struct pt_regs *ctx)
+{
+	update(ctx, &pe_res);
+	return 0;
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_core_autosize.c b/tools/testing/selftests/bpf/progs/test_core_autosize.c
index 44f5aa2e8956..9a7829c5e4a7 100644
--- a/tools/testing/selftests/bpf/progs/test_core_autosize.c
+++ b/tools/testing/selftests/bpf/progs/test_core_autosize.c
@@ -125,6 +125,16 @@ int handle_downsize(void *ctx)
 	return 0;
 }
 
+#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
+#define bpf_core_read_int bpf_core_read
+#else
+#define bpf_core_read_int(dst, sz, src) ({ \
+	/* Prevent "subtraction from stack pointer prohibited" */ \
+	volatile long __off = sizeof(*dst) - (sz); \
+	bpf_core_read((char *)(dst) + __off, sz, src); \
+})
+#endif
+
 SEC("raw_tp/sys_enter")
 int handle_probed(void *ctx)
 {
@@ -132,23 +142,23 @@ int handle_probed(void *ctx)
 	__u64 tmp;
 
 	tmp = 0;
-	bpf_core_read(&tmp, bpf_core_field_size(in->ptr), &in->ptr);
+	bpf_core_read_int(&tmp, bpf_core_field_size(in->ptr), &in->ptr);
 	ptr_probed = tmp;
 
 	tmp = 0;
-	bpf_core_read(&tmp, bpf_core_field_size(in->val1), &in->val1);
+	bpf_core_read_int(&tmp, bpf_core_field_size(in->val1), &in->val1);
 	val1_probed = tmp;
 
 	tmp = 0;
-	bpf_core_read(&tmp, bpf_core_field_size(in->val2), &in->val2);
+	bpf_core_read_int(&tmp, bpf_core_field_size(in->val2), &in->val2);
 	val2_probed = tmp;
 
 	tmp = 0;
-	bpf_core_read(&tmp, bpf_core_field_size(in->val3), &in->val3);
+	bpf_core_read_int(&tmp, bpf_core_field_size(in->val3), &in->val3);
 	val3_probed = tmp;
 
 	tmp = 0;
-	bpf_core_read(&tmp, bpf_core_field_size(in->val4), &in->val4);
+	bpf_core_read_int(&tmp, bpf_core_field_size(in->val4), &in->val4);
 	val4_probed = tmp;
 
 	return 0;
diff --git a/tools/testing/selftests/bpf/progs/test_ksyms_weak.c b/tools/testing/selftests/bpf/progs/test_ksyms_weak.c
new file mode 100644
index 000000000000..5f8379aadb29
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_ksyms_weak.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Test weak ksyms.
+ *
+ * Copyright (c) 2021 Google
+ */
+
+#include "vmlinux.h"
+
+#include <bpf/bpf_helpers.h>
+
+int out__existing_typed = -1;
+__u64 out__existing_typeless = -1;
+
+__u64 out__non_existent_typeless = -1;
+__u64 out__non_existent_typed = -1;
+
+/* existing weak symbols */
+
+/* test existing weak symbols can be resolved. */
+extern const struct rq runqueues __ksym __weak; /* typed */
+extern const void bpf_prog_active __ksym __weak; /* typeless */
+
+
+/* non-existent weak symbols. */
+
+/* typeless symbols, default to zero. */
+extern const void bpf_link_fops1 __ksym __weak;
+
+/* typed symbols, default to zero. */
+extern const int bpf_link_fops2 __ksym __weak;
+
+SEC("raw_tp/sys_enter")
+int pass_handler(const void *ctx)
+{
+	struct rq *rq;
+
+	/* tests existing symbols. */
+	rq = (struct rq *)bpf_per_cpu_ptr(&runqueues, 0);
+	if (rq)
+		out__existing_typed = rq->cpu;
+	out__existing_typeless = (__u64)&bpf_prog_active;
+
+	/* tests non-existent symbols. */
+	out__non_existent_typeless = (__u64)&bpf_link_fops1;
+
+	/* tests non-existent symbols. */
+	out__non_existent_typed = (__u64)&bpf_link_fops2;
+
+	if (&bpf_link_fops2) /* can't happen */
+		out__non_existent_typed = (__u64)bpf_per_cpu_ptr(&bpf_link_fops2, 0);
+
+	return 0;
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_map_in_map_invalid.c b/tools/testing/selftests/bpf/progs/test_map_in_map_invalid.c
new file mode 100644
index 000000000000..703c08e06442
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_map_in_map_invalid.c
@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Isovalent, Inc. */
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+
+struct inner {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__type(key, __u32);
+	__type(value, int);
+	__uint(max_entries, 4);
+};
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
+	__uint(max_entries, 0); /* This will make map creation to fail */
+	__uint(key_size, sizeof(__u32));
+	__array(values, struct inner);
+} mim SEC(".maps");
+
+SEC("xdp")
+int xdp_noop0(struct xdp_md *ctx)
+{
+	return XDP_PASS;
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_perf_link.c b/tools/testing/selftests/bpf/progs/test_perf_link.c
new file mode 100644
index 000000000000..c1db9fd98d0c
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_perf_link.c
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include "vmlinux.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+int run_cnt = 0;
+
+SEC("perf_event")
+int handler(struct pt_regs *ctx)
+{
+	__sync_fetch_and_add(&run_cnt, 1);
+	return 0;
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_sk_lookup_kern.c b/tools/testing/selftests/bpf/progs/test_sk_lookup_kern.c
index e83d0b48d80c..8249075f088f 100644
--- a/tools/testing/selftests/bpf/progs/test_sk_lookup_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_sk_lookup_kern.c
@@ -91,7 +91,7 @@ int bpf_sk_lookup_test1(struct __sk_buff *skb)
 	return 0;
 }
 
-SEC("classifier/fail_use_after_free")
+SEC("classifier/err_use_after_free")
 int bpf_sk_lookup_uaf(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
@@ -106,7 +106,7 @@ int bpf_sk_lookup_uaf(struct __sk_buff *skb)
 	return family;
 }
 
-SEC("classifier/fail_modify_sk_pointer")
+SEC("classifier/err_modify_sk_pointer")
 int bpf_sk_lookup_modptr(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
@@ -121,7 +121,7 @@ int bpf_sk_lookup_modptr(struct __sk_buff *skb)
 	return 0;
 }
 
-SEC("classifier/fail_modify_sk_or_null_pointer")
+SEC("classifier/err_modify_sk_or_null_pointer")
 int bpf_sk_lookup_modptr_or_null(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
@@ -135,7 +135,7 @@ int bpf_sk_lookup_modptr_or_null(struct __sk_buff *skb)
 	return 0;
 }
 
-SEC("classifier/fail_no_release")
+SEC("classifier/err_no_release")
 int bpf_sk_lookup_test2(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
@@ -144,7 +144,7 @@ int bpf_sk_lookup_test2(struct __sk_buff *skb)
 	return 0;
 }
 
-SEC("classifier/fail_release_twice")
+SEC("classifier/err_release_twice")
 int bpf_sk_lookup_test3(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
@@ -156,7 +156,7 @@ int bpf_sk_lookup_test3(struct __sk_buff *skb)
 	return 0;
 }
 
-SEC("classifier/fail_release_unchecked")
+SEC("classifier/err_release_unchecked")
 int bpf_sk_lookup_test4(struct __sk_buff *skb)
 {
 	struct bpf_sock_tuple tuple = {};
@@ -173,7 +173,7 @@ void lookup_no_release(struct __sk_buff *skb)
 	bpf_sk_lookup_tcp(skb, &tuple, sizeof(tuple), BPF_F_CURRENT_NETNS, 0);
 }
 
-SEC("classifier/fail_no_release_subcall")
+SEC("classifier/err_no_release_subcall")
 int bpf_sk_lookup_test5(struct __sk_buff *skb)
 {
 	lookup_no_release(skb);
diff --git a/tools/testing/selftests/bpf/progs/test_snprintf.c b/tools/testing/selftests/bpf/progs/test_snprintf.c
index e2ad26150f9b..8fda07544023 100644
--- a/tools/testing/selftests/bpf/progs/test_snprintf.c
+++ b/tools/testing/selftests/bpf/progs/test_snprintf.c
@@ -59,9 +59,9 @@ int handler(const void *ctx)
 	/* Kernel pointers */
 	addr_ret = BPF_SNPRINTF(addr_out, sizeof(addr_out), "%pK %px %p",
 				0, 0xFFFF00000ADD4E55, 0xFFFF00000ADD4E55);
-	/* Strings embedding */
-	str_ret  = BPF_SNPRINTF(str_out, sizeof(str_out), "%s %+05s",
-				str1, longstr);
+	/* Strings and single-byte character embedding */
+	str_ret  = BPF_SNPRINTF(str_out, sizeof(str_out), "%s % 9c %+2c %-3c %04c %0c %+05s",
+				str1, 'a', 'b', 'c', 'd', 'e', longstr);
 	/* Overflow */
 	over_ret = BPF_SNPRINTF(over_out, sizeof(over_out), "%%overflow");
 	/* Padding of fixed width numbers */
diff --git a/tools/testing/selftests/bpf/progs/test_task_pt_regs.c b/tools/testing/selftests/bpf/progs/test_task_pt_regs.c
new file mode 100644
index 000000000000..6c059f1cfa1b
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_task_pt_regs.c
@@ -0,0 +1,29 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/ptrace.h>
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+
+struct pt_regs current_regs = {};
+struct pt_regs ctx_regs = {};
+int uprobe_res = 0;
+
+SEC("uprobe/trigger_func")
+int handle_uprobe(struct pt_regs *ctx)
+{
+	struct task_struct *current;
+	struct pt_regs *regs;
+
+	current = bpf_get_current_task_btf();
+	regs = (struct pt_regs *) bpf_task_pt_regs(current);
+	__builtin_memcpy(&current_regs, regs, sizeof(*regs));
+	__builtin_memcpy(&ctx_regs, ctx, sizeof(*ctx));
+
+	/* Prove that uprobe was run */
+	uprobe_res = 1;
+
+	return 0;
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/test_tc_tunnel.c b/tools/testing/selftests/bpf/progs/test_tc_tunnel.c
index 84cd63259554..a0e7762b1e5a 100644
--- a/tools/testing/selftests/bpf/progs/test_tc_tunnel.c
+++ b/tools/testing/selftests/bpf/progs/test_tc_tunnel.c
@@ -528,7 +528,6 @@ int __encap_ip6vxlan_eth(struct __sk_buff *skb)
 
 static int decap_internal(struct __sk_buff *skb, int off, int len, char proto)
 {
-	char buf[sizeof(struct v6hdr)];
 	struct gre_hdr greh;
 	struct udphdr udph;
 	int olen = len;
diff --git a/tools/testing/selftests/bpf/progs/test_xdp_context_test_run.c b/tools/testing/selftests/bpf/progs/test_xdp_context_test_run.c
new file mode 100644
index 000000000000..d7b88cd05afd
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/test_xdp_context_test_run.c
@@ -0,0 +1,20 @@
+// SPDX-License-Identifier: GPL-2.0
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+
+SEC("xdp")
+int xdp_context(struct xdp_md *xdp)
+{
+	void *data = (void *)(long)xdp->data;
+	__u32 *metadata = (void *)(long)xdp->data_meta;
+	__u32 ret;
+
+	if (metadata + 1 > data)
+		return XDP_ABORTED;
+	ret = *metadata;
+	if (bpf_xdp_adjust_meta(xdp, 4))
+		return XDP_ABORTED;
+	return ret;
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/bpf/progs/timer.c b/tools/testing/selftests/bpf/progs/timer.c
new file mode 100644
index 000000000000..5f5309791649
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/timer.c
@@ -0,0 +1,297 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <linux/bpf.h>
+#include <time.h>
+#include <errno.h>
+#include <bpf/bpf_helpers.h>
+#include "bpf_tcp_helpers.h"
+
+char _license[] SEC("license") = "GPL";
+struct hmap_elem {
+	int counter;
+	struct bpf_timer timer;
+	struct bpf_spin_lock lock; /* unused */
+};
+
+struct {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(max_entries, 1000);
+	__type(key, int);
+	__type(value, struct hmap_elem);
+} hmap SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(map_flags, BPF_F_NO_PREALLOC);
+	__uint(max_entries, 1000);
+	__type(key, int);
+	__type(value, struct hmap_elem);
+} hmap_malloc SEC(".maps");
+
+struct elem {
+	struct bpf_timer t;
+};
+
+struct {
+	__uint(type, BPF_MAP_TYPE_ARRAY);
+	__uint(max_entries, 2);
+	__type(key, int);
+	__type(value, struct elem);
+} array SEC(".maps");
+
+struct {
+	__uint(type, BPF_MAP_TYPE_LRU_HASH);
+	__uint(max_entries, 4);
+	__type(key, int);
+	__type(value, struct elem);
+} lru SEC(".maps");
+
+__u64 bss_data;
+__u64 err;
+__u64 ok;
+__u64 callback_check = 52;
+__u64 callback2_check = 52;
+
+#define ARRAY 1
+#define HTAB 2
+#define HTAB_MALLOC 3
+#define LRU 4
+
+/* callback for array and lru timers */
+static int timer_cb1(void *map, int *key, struct bpf_timer *timer)
+{
+	/* increment bss variable twice.
+	 * Once via array timer callback and once via lru timer callback
+	 */
+	bss_data += 5;
+
+	/* *key == 0 - the callback was called for array timer.
+	 * *key == 4 - the callback was called from lru timer.
+	 */
+	if (*key == ARRAY) {
+		struct bpf_timer *lru_timer;
+		int lru_key = LRU;
+
+		/* rearm array timer to be called again in ~35 seconds */
+		if (bpf_timer_start(timer, 1ull << 35, 0) != 0)
+			err |= 1;
+
+		lru_timer = bpf_map_lookup_elem(&lru, &lru_key);
+		if (!lru_timer)
+			return 0;
+		bpf_timer_set_callback(lru_timer, timer_cb1);
+		if (bpf_timer_start(lru_timer, 0, 0) != 0)
+			err |= 2;
+	} else if (*key == LRU) {
+		int lru_key, i;
+
+		for (i = LRU + 1;
+		     i <= 100  /* for current LRU eviction algorithm this number
+				* should be larger than ~ lru->max_entries * 2
+				*/;
+		     i++) {
+			struct elem init = {};
+
+			/* lru_key cannot be used as loop induction variable
+			 * otherwise the loop will be unbounded.
+			 */
+			lru_key = i;
+
+			/* add more elements into lru map to push out current
+			 * element and force deletion of this timer
+			 */
+			bpf_map_update_elem(map, &lru_key, &init, 0);
+			/* look it up to bump it into active list */
+			bpf_map_lookup_elem(map, &lru_key);
+
+			/* keep adding until *key changes underneath,
+			 * which means that key/timer memory was reused
+			 */
+			if (*key != LRU)
+				break;
+		}
+
+		/* check that the timer was removed */
+		if (bpf_timer_cancel(timer) != -EINVAL)
+			err |= 4;
+		ok |= 1;
+	}
+	return 0;
+}
+
+SEC("fentry/bpf_fentry_test1")
+int BPF_PROG(test1, int a)
+{
+	struct bpf_timer *arr_timer, *lru_timer;
+	struct elem init = {};
+	int lru_key = LRU;
+	int array_key = ARRAY;
+
+	arr_timer = bpf_map_lookup_elem(&array, &array_key);
+	if (!arr_timer)
+		return 0;
+	bpf_timer_init(arr_timer, &array, CLOCK_MONOTONIC);
+
+	bpf_map_update_elem(&lru, &lru_key, &init, 0);
+	lru_timer = bpf_map_lookup_elem(&lru, &lru_key);
+	if (!lru_timer)
+		return 0;
+	bpf_timer_init(lru_timer, &lru, CLOCK_MONOTONIC);
+
+	bpf_timer_set_callback(arr_timer, timer_cb1);
+	bpf_timer_start(arr_timer, 0 /* call timer_cb1 asap */, 0);
+
+	/* init more timers to check that array destruction
+	 * doesn't leak timer memory.
+	 */
+	array_key = 0;
+	arr_timer = bpf_map_lookup_elem(&array, &array_key);
+	if (!arr_timer)
+		return 0;
+	bpf_timer_init(arr_timer, &array, CLOCK_MONOTONIC);
+	return 0;
+}
+
+/* callback for prealloc and non-prealloca hashtab timers */
+static int timer_cb2(void *map, int *key, struct hmap_elem *val)
+{
+	if (*key == HTAB)
+		callback_check--;
+	else
+		callback2_check--;
+	if (val->counter > 0 && --val->counter) {
+		/* re-arm the timer again to execute after 1 usec */
+		bpf_timer_start(&val->timer, 1000, 0);
+	} else if (*key == HTAB) {
+		struct bpf_timer *arr_timer;
+		int array_key = ARRAY;
+
+		/* cancel arr_timer otherwise bpf_fentry_test1 prog
+		 * will stay alive forever.
+		 */
+		arr_timer = bpf_map_lookup_elem(&array, &array_key);
+		if (!arr_timer)
+			return 0;
+		if (bpf_timer_cancel(arr_timer) != 1)
+			/* bpf_timer_cancel should return 1 to indicate
+			 * that arr_timer was active at this time
+			 */
+			err |= 8;
+
+		/* try to cancel ourself. It shouldn't deadlock. */
+		if (bpf_timer_cancel(&val->timer) != -EDEADLK)
+			err |= 16;
+
+		/* delete this key and this timer anyway.
+		 * It shouldn't deadlock either.
+		 */
+		bpf_map_delete_elem(map, key);
+
+		/* in preallocated hashmap both 'key' and 'val' could have been
+		 * reused to store another map element (like in LRU above),
+		 * but in controlled test environment the below test works.
+		 * It's not a use-after-free. The memory is owned by the map.
+		 */
+		if (bpf_timer_start(&val->timer, 1000, 0) != -EINVAL)
+			err |= 32;
+		ok |= 2;
+	} else {
+		if (*key != HTAB_MALLOC)
+			err |= 64;
+
+		/* try to cancel ourself. It shouldn't deadlock. */
+		if (bpf_timer_cancel(&val->timer) != -EDEADLK)
+			err |= 128;
+
+		/* delete this key and this timer anyway.
+		 * It shouldn't deadlock either.
+		 */
+		bpf_map_delete_elem(map, key);
+
+		/* in non-preallocated hashmap both 'key' and 'val' are RCU
+		 * protected and still valid though this element was deleted
+		 * from the map. Arm this timer for ~35 seconds. When callback
+		 * finishes the call_rcu will invoke:
+		 * htab_elem_free_rcu
+		 *   check_and_free_timer
+		 *     bpf_timer_cancel_and_free
+		 * to cancel this 35 second sleep and delete the timer for real.
+		 */
+		if (bpf_timer_start(&val->timer, 1ull << 35, 0) != 0)
+			err |= 256;
+		ok |= 4;
+	}
+	return 0;
+}
+
+int bpf_timer_test(void)
+{
+	struct hmap_elem *val;
+	int key = HTAB, key_malloc = HTAB_MALLOC;
+
+	val = bpf_map_lookup_elem(&hmap, &key);
+	if (val) {
+		if (bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME) != 0)
+			err |= 512;
+		bpf_timer_set_callback(&val->timer, timer_cb2);
+		bpf_timer_start(&val->timer, 1000, 0);
+	}
+	val = bpf_map_lookup_elem(&hmap_malloc, &key_malloc);
+	if (val) {
+		if (bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME) != 0)
+			err |= 1024;
+		bpf_timer_set_callback(&val->timer, timer_cb2);
+		bpf_timer_start(&val->timer, 1000, 0);
+	}
+	return 0;
+}
+
+SEC("fentry/bpf_fentry_test2")
+int BPF_PROG(test2, int a, int b)
+{
+	struct hmap_elem init = {}, *val;
+	int key = HTAB, key_malloc = HTAB_MALLOC;
+
+	init.counter = 10; /* number of times to trigger timer_cb2 */
+	bpf_map_update_elem(&hmap, &key, &init, 0);
+	val = bpf_map_lookup_elem(&hmap, &key);
+	if (val)
+		bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME);
+	/* update the same key to free the timer */
+	bpf_map_update_elem(&hmap, &key, &init, 0);
+
+	bpf_map_update_elem(&hmap_malloc, &key_malloc, &init, 0);
+	val = bpf_map_lookup_elem(&hmap_malloc, &key_malloc);
+	if (val)
+		bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME);
+	/* update the same key to free the timer */
+	bpf_map_update_elem(&hmap_malloc, &key_malloc, &init, 0);
+
+	/* init more timers to check that htab operations
+	 * don't leak timer memory.
+	 */
+	key = 0;
+	bpf_map_update_elem(&hmap, &key, &init, 0);
+	val = bpf_map_lookup_elem(&hmap, &key);
+	if (val)
+		bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME);
+	bpf_map_delete_elem(&hmap, &key);
+	bpf_map_update_elem(&hmap, &key, &init, 0);
+	val = bpf_map_lookup_elem(&hmap, &key);
+	if (val)
+		bpf_timer_init(&val->timer, &hmap, CLOCK_BOOTTIME);
+
+	/* and with non-prealloc htab */
+	key_malloc = 0;
+	bpf_map_update_elem(&hmap_malloc, &key_malloc, &init, 0);
+	val = bpf_map_lookup_elem(&hmap_malloc, &key_malloc);
+	if (val)
+		bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME);
+	bpf_map_delete_elem(&hmap_malloc, &key_malloc);
+	bpf_map_update_elem(&hmap_malloc, &key_malloc, &init, 0);
+	val = bpf_map_lookup_elem(&hmap_malloc, &key_malloc);
+	if (val)
+		bpf_timer_init(&val->timer, &hmap_malloc, CLOCK_BOOTTIME);
+
+	return bpf_timer_test();
+}
diff --git a/tools/testing/selftests/bpf/progs/timer_mim.c b/tools/testing/selftests/bpf/progs/timer_mim.c
new file mode 100644
index 000000000000..2fee7ab105ef
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/timer_mim.c
@@ -0,0 +1,88 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <linux/bpf.h>
+#include <time.h>
+#include <errno.h>
+#include <bpf/bpf_helpers.h>
+#include "bpf_tcp_helpers.h"
+
+char _license[] SEC("license") = "GPL";
+struct hmap_elem {
+	int pad; /* unused */
+	struct bpf_timer timer;
+};
+
+struct inner_map {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(max_entries, 1024);
+	__type(key, int);
+	__type(value, struct hmap_elem);
+} inner_htab SEC(".maps");
+
+#define ARRAY_KEY 1
+#define HASH_KEY 1234
+
+struct outer_arr {
+	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
+	__uint(max_entries, 2);
+	__uint(key_size, sizeof(int));
+	__uint(value_size, sizeof(int));
+	__array(values, struct inner_map);
+} outer_arr SEC(".maps") = {
+	.values = { [ARRAY_KEY] = &inner_htab },
+};
+
+__u64 err;
+__u64 ok;
+__u64 cnt;
+
+static int timer_cb1(void *map, int *key, struct hmap_elem *val);
+
+static int timer_cb2(void *map, int *key, struct hmap_elem *val)
+{
+	cnt++;
+	bpf_timer_set_callback(&val->timer, timer_cb1);
+	if (bpf_timer_start(&val->timer, 1000, 0))
+		err |= 1;
+	ok |= 1;
+	return 0;
+}
+
+/* callback for inner hash map */
+static int timer_cb1(void *map, int *key, struct hmap_elem *val)
+{
+	cnt++;
+	bpf_timer_set_callback(&val->timer, timer_cb2);
+	if (bpf_timer_start(&val->timer, 1000, 0))
+		err |= 2;
+	/* Do a lookup to make sure 'map' and 'key' pointers are correct */
+	bpf_map_lookup_elem(map, key);
+	ok |= 2;
+	return 0;
+}
+
+SEC("fentry/bpf_fentry_test1")
+int BPF_PROG(test1, int a)
+{
+	struct hmap_elem init = {};
+	struct bpf_map *inner_map;
+	struct hmap_elem *val;
+	int array_key = ARRAY_KEY;
+	int hash_key = HASH_KEY;
+
+	inner_map = bpf_map_lookup_elem(&outer_arr, &array_key);
+	if (!inner_map)
+		return 0;
+
+	bpf_map_update_elem(inner_map, &hash_key, &init, 0);
+	val = bpf_map_lookup_elem(inner_map, &hash_key);
+	if (!val)
+		return 0;
+
+	bpf_timer_init(&val->timer, inner_map, CLOCK_MONOTONIC);
+	if (bpf_timer_set_callback(&val->timer, timer_cb1))
+		err |= 4;
+	if (bpf_timer_start(&val->timer, 0, 0))
+		err |= 8;
+	return 0;
+}
diff --git a/tools/testing/selftests/bpf/progs/timer_mim_reject.c b/tools/testing/selftests/bpf/progs/timer_mim_reject.c
new file mode 100644
index 000000000000..5d648e3d8a41
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/timer_mim_reject.c
@@ -0,0 +1,74 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2021 Facebook */
+#include <linux/bpf.h>
+#include <time.h>
+#include <errno.h>
+#include <bpf/bpf_helpers.h>
+#include "bpf_tcp_helpers.h"
+
+char _license[] SEC("license") = "GPL";
+struct hmap_elem {
+	int pad; /* unused */
+	struct bpf_timer timer;
+};
+
+struct inner_map {
+	__uint(type, BPF_MAP_TYPE_HASH);
+	__uint(max_entries, 1024);
+	__type(key, int);
+	__type(value, struct hmap_elem);
+} inner_htab SEC(".maps");
+
+#define ARRAY_KEY 1
+#define ARRAY_KEY2 2
+#define HASH_KEY 1234
+
+struct outer_arr {
+	__uint(type, BPF_MAP_TYPE_ARRAY_OF_MAPS);
+	__uint(max_entries, 2);
+	__uint(key_size, sizeof(int));
+	__uint(value_size, sizeof(int));
+	__array(values, struct inner_map);
+} outer_arr SEC(".maps") = {
+	.values = { [ARRAY_KEY] = &inner_htab },
+};
+
+__u64 err;
+__u64 ok;
+__u64 cnt;
+
+/* callback for inner hash map */
+static int timer_cb(void *map, int *key, struct hmap_elem *val)
+{
+	return 0;
+}
+
+SEC("fentry/bpf_fentry_test1")
+int BPF_PROG(test1, int a)
+{
+	struct hmap_elem init = {};
+	struct bpf_map *inner_map, *inner_map2;
+	struct hmap_elem *val;
+	int array_key = ARRAY_KEY;
+	int array_key2 = ARRAY_KEY2;
+	int hash_key = HASH_KEY;
+
+	inner_map = bpf_map_lookup_elem(&outer_arr, &array_key);
+	if (!inner_map)
+		return 0;
+
+	inner_map2 = bpf_map_lookup_elem(&outer_arr, &array_key2);
+	if (!inner_map2)
+		return 0;
+	bpf_map_update_elem(inner_map, &hash_key, &init, 0);
+	val = bpf_map_lookup_elem(inner_map, &hash_key);
+	if (!val)
+		return 0;
+
+	bpf_timer_init(&val->timer, inner_map2, CLOCK_MONOTONIC);
+	if (bpf_timer_set_callback(&val->timer, timer_cb))
+		err |= 4;
+	if (bpf_timer_start(&val->timer, 0, 0))
+		err |= 8;
+	return 0;
+}
diff --git a/tools/testing/selftests/bpf/progs/xdp_tx.c b/tools/testing/selftests/bpf/progs/xdp_tx.c
index 94e6c2b281cb..5f725c720e00 100644
--- a/tools/testing/selftests/bpf/progs/xdp_tx.c
+++ b/tools/testing/selftests/bpf/progs/xdp_tx.c
@@ -3,7 +3,7 @@
 #include <linux/bpf.h>
 #include <bpf/bpf_helpers.h>
 
-SEC("tx")
+SEC("xdp")
 int xdp_tx(struct xdp_md *xdp)
 {
 	return XDP_TX;
diff --git a/tools/testing/selftests/bpf/test_bpftool.sh b/tools/testing/selftests/bpf/test_bpftool.sh
index 66690778e36d..718f59692ccb 100755
--- a/tools/testing/selftests/bpf/test_bpftool.sh
+++ b/tools/testing/selftests/bpf/test_bpftool.sh
@@ -2,4 +2,10 @@
 # SPDX-License-Identifier: GPL-2.0
 # Copyright (c) 2020 SUSE LLC.
 
+# 'make -C tools/testing/selftests/bpf install' will install to SCRIPT_DIR
+SCRIPT_DIR=$(dirname $(realpath $0))
+
+# 'make -C tools/testing/selftests/bpf' will install to BPFTOOL_INSTALL_PATH
+BPFTOOL_INSTALL_PATH="$SCRIPT_DIR"/tools/sbin
+export PATH=$SCRIPT_DIR:$BPFTOOL_INSTALL_PATH:$PATH
 python3 -m unittest -v test_bpftool.TestBpftool
diff --git a/tools/testing/selftests/bpf/test_bpftool_build.sh b/tools/testing/selftests/bpf/test_bpftool_build.sh
index ac349a5cea7e..b03a87571592 100755
--- a/tools/testing/selftests/bpf/test_bpftool_build.sh
+++ b/tools/testing/selftests/bpf/test_bpftool_build.sh
@@ -22,7 +22,7 @@ KDIR_ROOT_DIR=$(realpath $PWD/$SCRIPT_REL_DIR/../../../../)
 cd $KDIR_ROOT_DIR
 if [ ! -e tools/bpf/bpftool/Makefile ]; then
 	echo -e "skip:    bpftool files not found!\n"
-	exit 0
+	exit 4 # KSFT_SKIP=4
 fi
 
 ERROR=0
diff --git a/tools/testing/selftests/bpf/test_bpftool_synctypes.py b/tools/testing/selftests/bpf/test_bpftool_synctypes.py
new file mode 100755
index 000000000000..be54b7335a76
--- /dev/null
+++ b/tools/testing/selftests/bpf/test_bpftool_synctypes.py
@@ -0,0 +1,586 @@
+#!/usr/bin/env python3
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+#
+# Copyright (C) 2021 Isovalent, Inc.
+
+import argparse
+import re
+import os, sys
+
+LINUX_ROOT = os.path.abspath(os.path.join(__file__,
+    os.pardir, os.pardir, os.pardir, os.pardir, os.pardir))
+BPFTOOL_DIR = os.path.join(LINUX_ROOT, 'tools/bpf/bpftool')
+retval = 0
+
+class BlockParser(object):
+    """
+    A parser for extracting set of values from blocks such as enums.
+    @reader: a pointer to the open file to parse
+    """
+    def __init__(self, reader):
+        self.reader = reader
+
+    def search_block(self, start_marker):
+        """
+        Search for a given structure in a file.
+        @start_marker: regex marking the beginning of a structure to parse
+        """
+        offset = self.reader.tell()
+        array_start = re.search(start_marker, self.reader.read())
+        if array_start is None:
+            raise Exception('Failed to find start of block')
+        self.reader.seek(offset + array_start.start())
+
+    def parse(self, pattern, end_marker):
+        """
+        Parse a block and return a set of values. Values to extract must be
+        on separate lines in the file.
+        @pattern: pattern used to identify the values to extract
+        @end_marker: regex marking the end of the block to parse
+        """
+        entries = set()
+        while True:
+            line = self.reader.readline()
+            if not line or re.match(end_marker, line):
+                break
+            capture = pattern.search(line)
+            if capture and pattern.groups >= 1:
+                entries.add(capture.group(1))
+        return entries
+
+class ArrayParser(BlockParser):
+    """
+    A parser for extracting dicionaries of values from some BPF-related arrays.
+    @reader: a pointer to the open file to parse
+    @array_name: name of the array to parse
+    """
+    end_marker = re.compile('^};')
+
+    def __init__(self, reader, array_name):
+        self.array_name = array_name
+        self.start_marker = re.compile(f'(static )?const char \* const {self.array_name}\[.*\] = {{\n')
+        super().__init__(reader)
+
+    def search_block(self):
+        """
+        Search for the given array in a file.
+        """
+        super().search_block(self.start_marker);
+
+    def parse(self):
+        """
+        Parse a block and return data as a dictionary. Items to extract must be
+        on separate lines in the file.
+        """
+        pattern = re.compile('\[(BPF_\w*)\]\s*= "(.*)",?$')
+        entries = {}
+        while True:
+            line = self.reader.readline()
+            if line == '' or re.match(self.end_marker, line):
+                break
+            capture = pattern.search(line)
+            if capture:
+                entries[capture.group(1)] = capture.group(2)
+        return entries
+
+class InlineListParser(BlockParser):
+    """
+    A parser for extracting set of values from inline lists.
+    """
+    def parse(self, pattern, end_marker):
+        """
+        Parse a block and return a set of values. Multiple values to extract
+        can be on a same line in the file.
+        @pattern: pattern used to identify the values to extract
+        @end_marker: regex marking the end of the block to parse
+        """
+        entries = set()
+        while True:
+            line = self.reader.readline()
+            if not line:
+                break
+            entries.update(pattern.findall(line))
+            if re.search(end_marker, line):
+                break
+        return entries
+
+class FileExtractor(object):
+    """
+    A generic reader for extracting data from a given file. This class contains
+    several helper methods that wrap arround parser objects to extract values
+    from different structures.
+    This class does not offer a way to set a filename, which is expected to be
+    defined in children classes.
+    """
+    def __init__(self):
+        self.reader = open(self.filename, 'r')
+
+    def close(self):
+        """
+        Close the file used by the parser.
+        """
+        self.reader.close()
+
+    def reset_read(self):
+        """
+        Reset the file position indicator for this parser. This is useful when
+        parsing several structures in the file without respecting the order in
+        which those structures appear in the file.
+        """
+        self.reader.seek(0)
+
+    def get_types_from_array(self, array_name):
+        """
+        Search for and parse an array associating names to BPF_* enum members,
+        for example:
+
+            const char * const prog_type_name[] = {
+                    [BPF_PROG_TYPE_UNSPEC]                  = "unspec",
+                    [BPF_PROG_TYPE_SOCKET_FILTER]           = "socket_filter",
+                    [BPF_PROG_TYPE_KPROBE]                  = "kprobe",
+            };
+
+        Return a dictionary with the enum member names as keys and the
+        associated names as values, for example:
+
+            {'BPF_PROG_TYPE_UNSPEC': 'unspec',
+             'BPF_PROG_TYPE_SOCKET_FILTER': 'socket_filter',
+             'BPF_PROG_TYPE_KPROBE': 'kprobe'}
+
+        @array_name: name of the array to parse
+        """
+        array_parser = ArrayParser(self.reader, array_name)
+        array_parser.search_block()
+        return array_parser.parse()
+
+    def get_enum(self, enum_name):
+        """
+        Search for and parse an enum containing BPF_* members, for example:
+
+            enum bpf_prog_type {
+                    BPF_PROG_TYPE_UNSPEC,
+                    BPF_PROG_TYPE_SOCKET_FILTER,
+                    BPF_PROG_TYPE_KPROBE,
+            };
+
+        Return a set containing all member names, for example:
+
+            {'BPF_PROG_TYPE_UNSPEC',
+             'BPF_PROG_TYPE_SOCKET_FILTER',
+             'BPF_PROG_TYPE_KPROBE'}
+
+        @enum_name: name of the enum to parse
+        """
+        start_marker = re.compile(f'enum {enum_name} {{\n')
+        pattern = re.compile('^\s*(BPF_\w+),?$')
+        end_marker = re.compile('^};')
+        parser = BlockParser(self.reader)
+        parser.search_block(start_marker)
+        return parser.parse(pattern, end_marker)
+
+    def __get_description_list(self, start_marker, pattern, end_marker):
+        parser = InlineListParser(self.reader)
+        parser.search_block(start_marker)
+        return parser.parse(pattern, end_marker)
+
+    def get_rst_list(self, block_name):
+        """
+        Search for and parse a list of type names from RST documentation, for
+        example:
+
+             |       *TYPE* := {
+             |               **socket** | **kprobe** |
+             |               **kretprobe**
+             |       }
+
+        Return a set containing all type names, for example:
+
+            {'socket', 'kprobe', 'kretprobe'}
+
+        @block_name: name of the blog to parse, 'TYPE' in the example
+        """
+        start_marker = re.compile(f'\*{block_name}\* := {{')
+        pattern = re.compile('\*\*([\w/-]+)\*\*')
+        end_marker = re.compile('}\n')
+        return self.__get_description_list(start_marker, pattern, end_marker)
+
+    def get_help_list(self, block_name):
+        """
+        Search for and parse a list of type names from a help message in
+        bpftool, for example:
+
+            "       TYPE := { socket | kprobe |\\n"
+            "               kretprobe }\\n"
+
+        Return a set containing all type names, for example:
+
+            {'socket', 'kprobe', 'kretprobe'}
+
+        @block_name: name of the blog to parse, 'TYPE' in the example
+        """
+        start_marker = re.compile(f'"\s*{block_name} := {{')
+        pattern = re.compile('([\w/]+) [|}]')
+        end_marker = re.compile('}')
+        return self.__get_description_list(start_marker, pattern, end_marker)
+
+    def get_help_list_macro(self, macro):
+        """
+        Search for and parse a list of values from a help message starting with
+        a macro in bpftool, for example:
+
+            "       " HELP_SPEC_OPTIONS " |\\n"
+            "                    {-f|--bpffs} | {-m|--mapcompat} | {-n|--nomount} }\\n"
+
+        Return a set containing all item names, for example:
+
+            {'-f', '--bpffs', '-m', '--mapcompat', '-n', '--nomount'}
+
+        @macro: macro starting the block, 'HELP_SPEC_OPTIONS' in the example
+        """
+        start_marker = re.compile(f'"\s*{macro}\s*" [|}}]')
+        pattern = re.compile('([\w-]+) ?(?:\||}[ }\]])')
+        end_marker = re.compile('}\\\\n')
+        return self.__get_description_list(start_marker, pattern, end_marker)
+
+    def default_options(self):
+        """
+        Return the default options contained in HELP_SPEC_OPTIONS
+        """
+        return { '-j', '--json', '-p', '--pretty', '-d', '--debug' }
+
+    def get_bashcomp_list(self, block_name):
+        """
+        Search for and parse a list of type names from a variable in bash
+        completion file, for example:
+
+            local BPFTOOL_PROG_LOAD_TYPES='socket kprobe \\
+                kretprobe'
+
+        Return a set containing all type names, for example:
+
+            {'socket', 'kprobe', 'kretprobe'}
+
+        @block_name: name of the blog to parse, 'TYPE' in the example
+        """
+        start_marker = re.compile(f'local {block_name}=\'')
+        pattern = re.compile('(?:.*=\')?([\w/]+)')
+        end_marker = re.compile('\'$')
+        return self.__get_description_list(start_marker, pattern, end_marker)
+
+class SourceFileExtractor(FileExtractor):
+    """
+    An abstract extractor for a source file with usage message.
+    This class does not offer a way to set a filename, which is expected to be
+    defined in children classes.
+    """
+    def get_options(self):
+        return self.default_options().union(self.get_help_list_macro('HELP_SPEC_OPTIONS'))
+
+class ProgFileExtractor(SourceFileExtractor):
+    """
+    An extractor for bpftool's prog.c.
+    """
+    filename = os.path.join(BPFTOOL_DIR, 'prog.c')
+
+    def get_prog_types(self):
+        return self.get_types_from_array('prog_type_name')
+
+    def get_attach_types(self):
+        return self.get_types_from_array('attach_type_strings')
+
+    def get_prog_attach_help(self):
+        return self.get_help_list('ATTACH_TYPE')
+
+class MapFileExtractor(SourceFileExtractor):
+    """
+    An extractor for bpftool's map.c.
+    """
+    filename = os.path.join(BPFTOOL_DIR, 'map.c')
+
+    def get_map_types(self):
+        return self.get_types_from_array('map_type_name')
+
+    def get_map_help(self):
+        return self.get_help_list('TYPE')
+
+class CgroupFileExtractor(SourceFileExtractor):
+    """
+    An extractor for bpftool's cgroup.c.
+    """
+    filename = os.path.join(BPFTOOL_DIR, 'cgroup.c')
+
+    def get_prog_attach_help(self):
+        return self.get_help_list('ATTACH_TYPE')
+
+class CommonFileExtractor(SourceFileExtractor):
+    """
+    An extractor for bpftool's common.c.
+    """
+    filename = os.path.join(BPFTOOL_DIR, 'common.c')
+
+    def __init__(self):
+        super().__init__()
+        self.attach_types = {}
+
+    def get_attach_types(self):
+        if not self.attach_types:
+            self.attach_types = self.get_types_from_array('attach_type_name')
+        return self.attach_types
+
+    def get_cgroup_attach_types(self):
+        if not self.attach_types:
+            self.get_attach_types()
+        cgroup_types = {}
+        for (key, value) in self.attach_types.items():
+            if key.find('BPF_CGROUP') != -1:
+                cgroup_types[key] = value
+        return cgroup_types
+
+class GenericSourceExtractor(SourceFileExtractor):
+    """
+    An extractor for generic source code files.
+    """
+    filename = ""
+
+    def __init__(self, filename):
+        self.filename = os.path.join(BPFTOOL_DIR, filename)
+        super().__init__()
+
+class BpfHeaderExtractor(FileExtractor):
+    """
+    An extractor for the UAPI BPF header.
+    """
+    filename = os.path.join(LINUX_ROOT, 'tools/include/uapi/linux/bpf.h')
+
+    def get_prog_types(self):
+        return self.get_enum('bpf_prog_type')
+
+    def get_map_types(self):
+        return self.get_enum('bpf_map_type')
+
+    def get_attach_types(self):
+        return self.get_enum('bpf_attach_type')
+
+class ManPageExtractor(FileExtractor):
+    """
+    An abstract extractor for an RST documentation page.
+    This class does not offer a way to set a filename, which is expected to be
+    defined in children classes.
+    """
+    def get_options(self):
+        return self.get_rst_list('OPTIONS')
+
+class ManProgExtractor(ManPageExtractor):
+    """
+    An extractor for bpftool-prog.rst.
+    """
+    filename = os.path.join(BPFTOOL_DIR, 'Documentation/bpftool-prog.rst')
+
+    def get_attach_types(self):
+        return self.get_rst_list('ATTACH_TYPE')
+
+class ManMapExtractor(ManPageExtractor):
+    """
+    An extractor for bpftool-map.rst.
+    """
+    filename = os.path.join(BPFTOOL_DIR, 'Documentation/bpftool-map.rst')
+
+    def get_map_types(self):
+        return self.get_rst_list('TYPE')
+
+class ManCgroupExtractor(ManPageExtractor):
+    """
+    An extractor for bpftool-cgroup.rst.
+    """
+    filename = os.path.join(BPFTOOL_DIR, 'Documentation/bpftool-cgroup.rst')
+
+    def get_attach_types(self):
+        return self.get_rst_list('ATTACH_TYPE')
+
+class ManGenericExtractor(ManPageExtractor):
+    """
+    An extractor for generic RST documentation pages.
+    """
+    filename = ""
+
+    def __init__(self, filename):
+        self.filename = os.path.join(BPFTOOL_DIR, filename)
+        super().__init__()
+
+class BashcompExtractor(FileExtractor):
+    """
+    An extractor for bpftool's bash completion file.
+    """
+    filename = os.path.join(BPFTOOL_DIR, 'bash-completion/bpftool')
+
+    def get_prog_attach_types(self):
+        return self.get_bashcomp_list('BPFTOOL_PROG_ATTACH_TYPES')
+
+    def get_map_types(self):
+        return self.get_bashcomp_list('BPFTOOL_MAP_CREATE_TYPES')
+
+    def get_cgroup_attach_types(self):
+        return self.get_bashcomp_list('BPFTOOL_CGROUP_ATTACH_TYPES')
+
+def verify(first_set, second_set, message):
+    """
+    Print all values that differ between two sets.
+    @first_set: one set to compare
+    @second_set: another set to compare
+    @message: message to print for values belonging to only one of the sets
+    """
+    global retval
+    diff = first_set.symmetric_difference(second_set)
+    if diff:
+        print(message, diff)
+        retval = 1
+
+def main():
+    # No arguments supported at this time, but print usage for -h|--help
+    argParser = argparse.ArgumentParser(description="""
+    Verify that bpftool's code, help messages, documentation and bash
+    completion are all in sync on program types, map types, attach types, and
+    options. Also check that bpftool is in sync with the UAPI BPF header.
+    """)
+    args = argParser.parse_args()
+
+    # Map types (enum)
+
+    bpf_info = BpfHeaderExtractor()
+    ref = bpf_info.get_map_types()
+
+    map_info = MapFileExtractor()
+    source_map_items = map_info.get_map_types()
+    map_types_enum = set(source_map_items.keys())
+
+    verify(ref, map_types_enum,
+            f'Comparing BPF header (enum bpf_map_type) and {MapFileExtractor.filename} (map_type_name):')
+
+    # Map types (names)
+
+    source_map_types = set(source_map_items.values())
+    source_map_types.discard('unspec')
+
+    help_map_types = map_info.get_map_help()
+    help_map_options = map_info.get_options()
+    map_info.close()
+
+    man_map_info = ManMapExtractor()
+    man_map_options = man_map_info.get_options()
+    man_map_types = man_map_info.get_map_types()
+    man_map_info.close()
+
+    bashcomp_info = BashcompExtractor()
+    bashcomp_map_types = bashcomp_info.get_map_types()
+
+    verify(source_map_types, help_map_types,
+            f'Comparing {MapFileExtractor.filename} (map_type_name) and {MapFileExtractor.filename} (do_help() TYPE):')
+    verify(source_map_types, man_map_types,
+            f'Comparing {MapFileExtractor.filename} (map_type_name) and {ManMapExtractor.filename} (TYPE):')
+    verify(help_map_options, man_map_options,
+            f'Comparing {MapFileExtractor.filename} (do_help() OPTIONS) and {ManMapExtractor.filename} (OPTIONS):')
+    verify(source_map_types, bashcomp_map_types,
+            f'Comparing {MapFileExtractor.filename} (map_type_name) and {BashcompExtractor.filename} (BPFTOOL_MAP_CREATE_TYPES):')
+
+    # Program types (enum)
+
+    ref = bpf_info.get_prog_types()
+
+    prog_info = ProgFileExtractor()
+    prog_types = set(prog_info.get_prog_types().keys())
+
+    verify(ref, prog_types,
+            f'Comparing BPF header (enum bpf_prog_type) and {ProgFileExtractor.filename} (prog_type_name):')
+
+    # Attach types (enum)
+
+    ref = bpf_info.get_attach_types()
+    bpf_info.close()
+
+    common_info = CommonFileExtractor()
+    attach_types = common_info.get_attach_types()
+
+    verify(ref, attach_types,
+            f'Comparing BPF header (enum bpf_attach_type) and {CommonFileExtractor.filename} (attach_type_name):')
+
+    # Attach types (names)
+
+    source_prog_attach_types = set(prog_info.get_attach_types().values())
+
+    help_prog_attach_types = prog_info.get_prog_attach_help()
+    help_prog_options = prog_info.get_options()
+    prog_info.close()
+
+    man_prog_info = ManProgExtractor()
+    man_prog_options = man_prog_info.get_options()
+    man_prog_attach_types = man_prog_info.get_attach_types()
+    man_prog_info.close()
+
+    bashcomp_info.reset_read() # We stopped at map types, rewind
+    bashcomp_prog_attach_types = bashcomp_info.get_prog_attach_types()
+
+    verify(source_prog_attach_types, help_prog_attach_types,
+            f'Comparing {ProgFileExtractor.filename} (attach_type_strings) and {ProgFileExtractor.filename} (do_help() ATTACH_TYPE):')
+    verify(source_prog_attach_types, man_prog_attach_types,
+            f'Comparing {ProgFileExtractor.filename} (attach_type_strings) and {ManProgExtractor.filename} (ATTACH_TYPE):')
+    verify(help_prog_options, man_prog_options,
+            f'Comparing {ProgFileExtractor.filename} (do_help() OPTIONS) and {ManProgExtractor.filename} (OPTIONS):')
+    verify(source_prog_attach_types, bashcomp_prog_attach_types,
+            f'Comparing {ProgFileExtractor.filename} (attach_type_strings) and {BashcompExtractor.filename} (BPFTOOL_PROG_ATTACH_TYPES):')
+
+    # Cgroup attach types
+
+    source_cgroup_attach_types = set(common_info.get_cgroup_attach_types().values())
+    common_info.close()
+
+    cgroup_info = CgroupFileExtractor()
+    help_cgroup_attach_types = cgroup_info.get_prog_attach_help()
+    help_cgroup_options = cgroup_info.get_options()
+    cgroup_info.close()
+
+    man_cgroup_info = ManCgroupExtractor()
+    man_cgroup_options = man_cgroup_info.get_options()
+    man_cgroup_attach_types = man_cgroup_info.get_attach_types()
+    man_cgroup_info.close()
+
+    bashcomp_cgroup_attach_types = bashcomp_info.get_cgroup_attach_types()
+    bashcomp_info.close()
+
+    verify(source_cgroup_attach_types, help_cgroup_attach_types,
+            f'Comparing {CommonFileExtractor.filename} (attach_type_strings) and {CgroupFileExtractor.filename} (do_help() ATTACH_TYPE):')
+    verify(source_cgroup_attach_types, man_cgroup_attach_types,
+            f'Comparing {CommonFileExtractor.filename} (attach_type_strings) and {ManCgroupExtractor.filename} (ATTACH_TYPE):')
+    verify(help_cgroup_options, man_cgroup_options,
+            f'Comparing {CgroupFileExtractor.filename} (do_help() OPTIONS) and {ManCgroupExtractor.filename} (OPTIONS):')
+    verify(source_cgroup_attach_types, bashcomp_cgroup_attach_types,
+            f'Comparing {CommonFileExtractor.filename} (attach_type_strings) and {BashcompExtractor.filename} (BPFTOOL_CGROUP_ATTACH_TYPES):')
+
+    # Options for remaining commands
+
+    for cmd in [ 'btf', 'feature', 'gen', 'iter', 'link', 'net', 'perf', 'struct_ops', ]:
+        source_info = GenericSourceExtractor(cmd + '.c')
+        help_cmd_options = source_info.get_options()
+        source_info.close()
+
+        man_cmd_info = ManGenericExtractor(os.path.join('Documentation', 'bpftool-' + cmd + '.rst'))
+        man_cmd_options = man_cmd_info.get_options()
+        man_cmd_info.close()
+
+        verify(help_cmd_options, man_cmd_options,
+                f'Comparing {source_info.filename} (do_help() OPTIONS) and {man_cmd_info.filename} (OPTIONS):')
+
+    source_main_info = GenericSourceExtractor('main.c')
+    help_main_options = source_main_info.get_options()
+    source_main_info.close()
+
+    man_main_info = ManGenericExtractor(os.path.join('Documentation', 'bpftool.rst'))
+    man_main_options = man_main_info.get_options()
+    man_main_info.close()
+
+    verify(help_main_options, man_main_options,
+            f'Comparing {source_main_info.filename} (do_help() OPTIONS) and {man_main_info.filename} (OPTIONS):')
+
+    sys.exit(retval)
+
+if __name__ == "__main__":
+    main()
diff --git a/tools/testing/selftests/bpf/test_doc_build.sh b/tools/testing/selftests/bpf/test_doc_build.sh
index ed12111cd2f0..679cf968c7d1 100755
--- a/tools/testing/selftests/bpf/test_doc_build.sh
+++ b/tools/testing/selftests/bpf/test_doc_build.sh
@@ -4,11 +4,17 @@ set -e
 
 # Assume script is located under tools/testing/selftests/bpf/. We want to start
 # build attempts from the top of kernel repository.
-SCRIPT_REL_PATH=$(realpath --relative-to=$PWD $0)
+SCRIPT_REL_PATH=$(realpath $0)
 SCRIPT_REL_DIR=$(dirname $SCRIPT_REL_PATH)
-KDIR_ROOT_DIR=$(realpath $PWD/$SCRIPT_REL_DIR/../../../../)
+KDIR_ROOT_DIR=$(realpath $SCRIPT_REL_DIR/../../../../)
+SCRIPT_REL_DIR=$(dirname $(realpath --relative-to=$KDIR_ROOT_DIR $SCRIPT_REL_PATH))
 cd $KDIR_ROOT_DIR
 
+if [ ! -e $PWD/$SCRIPT_REL_DIR/Makefile ]; then
+	echo -e "skip:    bpftool files not found!\n"
+	exit 4 # KSFT_SKIP=4
+fi
+
 for tgt in docs docs-clean; do
 	make -s -C $PWD/$SCRIPT_REL_DIR $tgt;
 done
diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c
index 30cbf5d98f7d..c7a36a9378f8 100644
--- a/tools/testing/selftests/bpf/test_maps.c
+++ b/tools/testing/selftests/bpf/test_maps.c
@@ -764,8 +764,8 @@ static void test_sockmap(unsigned int tasks, void *data)
 	udp = socket(AF_INET, SOCK_DGRAM, 0);
 	i = 0;
 	err = bpf_map_update_elem(fd, &i, &udp, BPF_ANY);
-	if (!err) {
-		printf("Failed socket SOCK_DGRAM allowed '%i:%i'\n",
+	if (err) {
+		printf("Failed socket update SOCK_DGRAM '%i:%i'\n",
 		       i, udp);
 		goto out_sockmap;
 	}
@@ -985,7 +985,7 @@ static void test_sockmap(unsigned int tasks, void *data)
 
 		FD_ZERO(&w);
 		FD_SET(sfd[3], &w);
-		to.tv_sec = 1;
+		to.tv_sec = 30;
 		to.tv_usec = 0;
 		s = select(sfd[3] + 1, &w, NULL, NULL, &to);
 		if (s == -1) {
@@ -1153,12 +1153,17 @@ out_sockmap:
 }
 
 #define MAPINMAP_PROG "./test_map_in_map.o"
+#define MAPINMAP_INVALID_PROG "./test_map_in_map_invalid.o"
 static void test_map_in_map(void)
 {
 	struct bpf_object *obj;
 	struct bpf_map *map;
 	int mim_fd, fd, err;
 	int pos = 0;
+	struct bpf_map_info info = {};
+	__u32 len = sizeof(info);
+	__u32 id = 0;
+	libbpf_print_fn_t old_print_fn;
 
 	obj = bpf_object__open(MAPINMAP_PROG);
 
@@ -1228,11 +1233,72 @@ static void test_map_in_map(void)
 	}
 
 	close(fd);
+	fd = -1;
 	bpf_object__close(obj);
+
+	/* Test that failing bpf_object__create_map() destroys the inner map */
+	obj = bpf_object__open(MAPINMAP_INVALID_PROG);
+	err = libbpf_get_error(obj);
+	if (err) {
+		printf("Failed to load %s program: %d %d",
+		       MAPINMAP_INVALID_PROG, err, errno);
+		goto out_map_in_map;
+	}
+
+	map = bpf_object__find_map_by_name(obj, "mim");
+	if (!map) {
+		printf("Failed to load array of maps from test prog\n");
+		goto out_map_in_map;
+	}
+
+	old_print_fn = libbpf_set_print(NULL);
+
+	err = bpf_object__load(obj);
+	if (!err) {
+		printf("Loading obj supposed to fail\n");
+		goto out_map_in_map;
+	}
+
+	libbpf_set_print(old_print_fn);
+
+	/* Iterate over all maps to check whether the internal map
+	 * ("mim.internal") has been destroyed.
+	 */
+	while (true) {
+		err = bpf_map_get_next_id(id, &id);
+		if (err) {
+			if (errno == ENOENT)
+				break;
+			printf("Failed to get next map: %d", errno);
+			goto out_map_in_map;
+		}
+
+		fd = bpf_map_get_fd_by_id(id);
+		if (fd < 0) {
+			if (errno == ENOENT)
+				continue;
+			printf("Failed to get map by id %u: %d", id, errno);
+			goto out_map_in_map;
+		}
+
+		err = bpf_obj_get_info_by_fd(fd, &info, &len);
+		if (err) {
+			printf("Failed to get map info by fd %d: %d", fd,
+			       errno);
+			goto out_map_in_map;
+		}
+
+		if (!strcmp(info.name, "mim.inner")) {
+			printf("Inner map mim.inner was not destroyed\n");
+			goto out_map_in_map;
+		}
+	}
+
 	return;
 
 out_map_in_map:
-	close(fd);
+	if (fd >= 0)
+		close(fd);
 	exit(1);
 }
 
@@ -1330,15 +1396,22 @@ static void test_map_stress(void)
 #define DO_DELETE 0
 
 #define MAP_RETRIES 20
+#define MAX_DELAY_US 50000
+#define MIN_DELAY_RANGE_US 5000
 
 static int map_update_retriable(int map_fd, const void *key, const void *value,
 				int flags, int attempts)
 {
+	int delay = rand() % MIN_DELAY_RANGE_US;
+
 	while (bpf_map_update_elem(map_fd, key, value, flags)) {
 		if (!attempts || (errno != EAGAIN && errno != EBUSY))
 			return -errno;
 
-		usleep(1);
+		if (delay <= MAX_DELAY_US / 2)
+			delay *= 2;
+
+		usleep(delay);
 		attempts--;
 	}
 
@@ -1347,11 +1420,16 @@ static int map_update_retriable(int map_fd, const void *key, const void *value,
 
 static int map_delete_retriable(int map_fd, const void *key, int attempts)
 {
+	int delay = rand() % MIN_DELAY_RANGE_US;
+
 	while (bpf_map_delete_elem(map_fd, key)) {
 		if (!attempts || (errno != EAGAIN && errno != EBUSY))
 			return -errno;
 
-		usleep(1);
+		if (delay <= MAX_DELAY_US / 2)
+			delay *= 2;
+
+		usleep(delay);
 		attempts--;
 	}
 
diff --git a/tools/testing/selftests/bpf/test_netcnt.c b/tools/testing/selftests/bpf/test_netcnt.c
deleted file mode 100644
index a7b9a69f4fd5..000000000000
--- a/tools/testing/selftests/bpf/test_netcnt.c
+++ /dev/null
@@ -1,148 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <errno.h>
-#include <assert.h>
-#include <sys/sysinfo.h>
-#include <sys/time.h>
-
-#include <linux/bpf.h>
-#include <bpf/bpf.h>
-#include <bpf/libbpf.h>
-
-#include "cgroup_helpers.h"
-#include "bpf_rlimit.h"
-#include "netcnt_common.h"
-
-#define BPF_PROG "./netcnt_prog.o"
-#define TEST_CGROUP "/test-network-counters/"
-
-static int bpf_find_map(const char *test, struct bpf_object *obj,
-			const char *name)
-{
-	struct bpf_map *map;
-
-	map = bpf_object__find_map_by_name(obj, name);
-	if (!map) {
-		printf("%s:FAIL:map '%s' not found\n", test, name);
-		return -1;
-	}
-	return bpf_map__fd(map);
-}
-
-int main(int argc, char **argv)
-{
-	struct percpu_net_cnt *percpu_netcnt;
-	struct bpf_cgroup_storage_key key;
-	int map_fd, percpu_map_fd;
-	int error = EXIT_FAILURE;
-	struct net_cnt netcnt;
-	struct bpf_object *obj;
-	int prog_fd, cgroup_fd;
-	unsigned long packets;
-	unsigned long bytes;
-	int cpu, nproc;
-	__u32 prog_cnt;
-
-	nproc = get_nprocs_conf();
-	percpu_netcnt = malloc(sizeof(*percpu_netcnt) * nproc);
-	if (!percpu_netcnt) {
-		printf("Not enough memory for per-cpu area (%d cpus)\n", nproc);
-		goto err;
-	}
-
-	if (bpf_prog_load(BPF_PROG, BPF_PROG_TYPE_CGROUP_SKB,
-			  &obj, &prog_fd)) {
-		printf("Failed to load bpf program\n");
-		goto out;
-	}
-
-	cgroup_fd = cgroup_setup_and_join(TEST_CGROUP);
-	if (cgroup_fd < 0)
-		goto err;
-
-	/* Attach bpf program */
-	if (bpf_prog_attach(prog_fd, cgroup_fd, BPF_CGROUP_INET_EGRESS, 0)) {
-		printf("Failed to attach bpf program");
-		goto err;
-	}
-
-	if (system("which ping6 &>/dev/null") == 0)
-		assert(!system("ping6 ::1 -c 10000 -f -q > /dev/null"));
-	else
-		assert(!system("ping -6 ::1 -c 10000 -f -q > /dev/null"));
-
-	if (bpf_prog_query(cgroup_fd, BPF_CGROUP_INET_EGRESS, 0, NULL, NULL,
-			   &prog_cnt)) {
-		printf("Failed to query attached programs");
-		goto err;
-	}
-
-	map_fd = bpf_find_map(__func__, obj, "netcnt");
-	if (map_fd < 0) {
-		printf("Failed to find bpf map with net counters");
-		goto err;
-	}
-
-	percpu_map_fd = bpf_find_map(__func__, obj, "percpu_netcnt");
-	if (percpu_map_fd < 0) {
-		printf("Failed to find bpf map with percpu net counters");
-		goto err;
-	}
-
-	if (bpf_map_get_next_key(map_fd, NULL, &key)) {
-		printf("Failed to get key in cgroup storage\n");
-		goto err;
-	}
-
-	if (bpf_map_lookup_elem(map_fd, &key, &netcnt)) {
-		printf("Failed to lookup cgroup storage\n");
-		goto err;
-	}
-
-	if (bpf_map_lookup_elem(percpu_map_fd, &key, &percpu_netcnt[0])) {
-		printf("Failed to lookup percpu cgroup storage\n");
-		goto err;
-	}
-
-	/* Some packets can be still in per-cpu cache, but not more than
-	 * MAX_PERCPU_PACKETS.
-	 */
-	packets = netcnt.packets;
-	bytes = netcnt.bytes;
-	for (cpu = 0; cpu < nproc; cpu++) {
-		if (percpu_netcnt[cpu].packets > MAX_PERCPU_PACKETS) {
-			printf("Unexpected percpu value: %llu\n",
-			       percpu_netcnt[cpu].packets);
-			goto err;
-		}
-
-		packets += percpu_netcnt[cpu].packets;
-		bytes += percpu_netcnt[cpu].bytes;
-	}
-
-	/* No packets should be lost */
-	if (packets != 10000) {
-		printf("Unexpected packet count: %lu\n", packets);
-		goto err;
-	}
-
-	/* Let's check that bytes counter matches the number of packets
-	 * multiplied by the size of ipv6 ICMP packet.
-	 */
-	if (bytes != packets * 104) {
-		printf("Unexpected bytes count: %lu\n", bytes);
-		goto err;
-	}
-
-	error = 0;
-	printf("test_netcnt:PASS\n");
-
-err:
-	cleanup_cgroup_environment();
-	free(percpu_netcnt);
-
-out:
-	return error;
-}
diff --git a/tools/testing/selftests/bpf/test_progs.c b/tools/testing/selftests/bpf/test_progs.c
index 6f103106a39b..cc1cd240445d 100644
--- a/tools/testing/selftests/bpf/test_progs.c
+++ b/tools/testing/selftests/bpf/test_progs.c
@@ -13,6 +13,28 @@
 #include <execinfo.h> /* backtrace */
 #include <linux/membarrier.h>
 
+/* Adapted from perf/util/string.c */
+static bool glob_match(const char *str, const char *pat)
+{
+	while (*str && *pat && *pat != '*') {
+		if (*str != *pat)
+			return false;
+		str++;
+		pat++;
+	}
+	/* Check wild card */
+	if (*pat == '*') {
+		while (*pat == '*')
+			pat++;
+		if (!*pat) /* Tail wild card matches all */
+			return true;
+		while (*str)
+			if (glob_match(str++, pat))
+				return true;
+	}
+	return !*str && !*pat;
+}
+
 #define EXIT_NO_TEST		2
 #define EXIT_ERR_SETUP_INFRA	3
 
@@ -55,12 +77,12 @@ static bool should_run(struct test_selector *sel, int num, const char *name)
 	int i;
 
 	for (i = 0; i < sel->blacklist.cnt; i++) {
-		if (strstr(name, sel->blacklist.strs[i]))
+		if (glob_match(name, sel->blacklist.strs[i]))
 			return false;
 	}
 
 	for (i = 0; i < sel->whitelist.cnt; i++) {
-		if (strstr(name, sel->whitelist.strs[i]))
+		if (glob_match(name, sel->whitelist.strs[i]))
 			return true;
 	}
 
@@ -148,18 +170,18 @@ void test__end_subtest()
 	struct prog_test_def *test = env.test;
 	int sub_error_cnt = test->error_cnt - test->old_error_cnt;
 
+	dump_test_log(test, sub_error_cnt);
+
+	fprintf(env.stdout, "#%d/%d %s/%s:%s\n",
+	       test->test_num, test->subtest_num, test->test_name, test->subtest_name,
+	       sub_error_cnt ? "FAIL" : (test->skip_cnt ? "SKIP" : "OK"));
+
 	if (sub_error_cnt)
 		env.fail_cnt++;
 	else if (test->skip_cnt == 0)
 		env.sub_succ_cnt++;
 	skip_account();
 
-	dump_test_log(test, sub_error_cnt);
-
-	fprintf(env.stdout, "#%d/%d %s:%s\n",
-	       test->test_num, test->subtest_num, test->subtest_name,
-	       sub_error_cnt ? "FAIL" : (test->skip_cnt ? "SKIP" : "OK"));
-
 	free(test->subtest_name);
 	test->subtest_name = NULL;
 }
@@ -450,6 +472,8 @@ enum ARG_KEYS {
 	ARG_VERBOSE = 'v',
 	ARG_GET_TEST_CNT = 'c',
 	ARG_LIST_TEST_NAMES = 'l',
+	ARG_TEST_NAME_GLOB_ALLOWLIST = 'a',
+	ARG_TEST_NAME_GLOB_DENYLIST = 'd',
 };
 
 static const struct argp_option opts[] = {
@@ -467,6 +491,10 @@ static const struct argp_option opts[] = {
 	  "Get number of selected top-level tests " },
 	{ "list", ARG_LIST_TEST_NAMES, NULL, 0,
 	  "List test names that would run (without running them) " },
+	{ "allow", ARG_TEST_NAME_GLOB_ALLOWLIST, "NAMES", 0,
+	  "Run tests with name matching the pattern (supports '*' wildcard)." },
+	{ "deny", ARG_TEST_NAME_GLOB_DENYLIST, "NAMES", 0,
+	  "Don't run tests with name matching the pattern (supports '*' wildcard)." },
 	{},
 };
 
@@ -491,36 +519,48 @@ static void free_str_set(const struct str_set *set)
 	free(set->strs);
 }
 
-static int parse_str_list(const char *s, struct str_set *set)
+static int parse_str_list(const char *s, struct str_set *set, bool is_glob_pattern)
 {
 	char *input, *state = NULL, *next, **tmp, **strs = NULL;
-	int cnt = 0;
+	int i, cnt = 0;
 
 	input = strdup(s);
 	if (!input)
 		return -ENOMEM;
 
-	set->cnt = 0;
-	set->strs = NULL;
-
 	while ((next = strtok_r(state ? NULL : input, ",", &state))) {
 		tmp = realloc(strs, sizeof(*strs) * (cnt + 1));
 		if (!tmp)
 			goto err;
 		strs = tmp;
 
-		strs[cnt] = strdup(next);
-		if (!strs[cnt])
-			goto err;
+		if (is_glob_pattern) {
+			strs[cnt] = strdup(next);
+			if (!strs[cnt])
+				goto err;
+		} else {
+			strs[cnt] = malloc(strlen(next) + 2 + 1);
+			if (!strs[cnt])
+				goto err;
+			sprintf(strs[cnt], "*%s*", next);
+		}
 
 		cnt++;
 	}
 
-	set->cnt = cnt;
-	set->strs = (const char **)strs;
+	tmp = realloc(set->strs, sizeof(*strs) * (cnt + set->cnt));
+	if (!tmp)
+		goto err;
+	memcpy(tmp + set->cnt, strs, sizeof(*strs) * cnt);
+	set->strs = (const char **)tmp;
+	set->cnt += cnt;
+
 	free(input);
+	free(strs);
 	return 0;
 err:
+	for (i = 0; i < cnt; i++)
+		free(strs[i]);
 	free(strs);
 	free(input);
 	return -ENOMEM;
@@ -553,29 +593,35 @@ static error_t parse_arg(int key, char *arg, struct argp_state *state)
 		}
 		break;
 	}
+	case ARG_TEST_NAME_GLOB_ALLOWLIST:
 	case ARG_TEST_NAME: {
 		char *subtest_str = strchr(arg, '/');
 
 		if (subtest_str) {
 			*subtest_str = '\0';
 			if (parse_str_list(subtest_str + 1,
-					   &env->subtest_selector.whitelist))
+					   &env->subtest_selector.whitelist,
+					   key == ARG_TEST_NAME_GLOB_ALLOWLIST))
 				return -ENOMEM;
 		}
-		if (parse_str_list(arg, &env->test_selector.whitelist))
+		if (parse_str_list(arg, &env->test_selector.whitelist,
+				   key == ARG_TEST_NAME_GLOB_ALLOWLIST))
 			return -ENOMEM;
 		break;
 	}
+	case ARG_TEST_NAME_GLOB_DENYLIST:
 	case ARG_TEST_NAME_BLACKLIST: {
 		char *subtest_str = strchr(arg, '/');
 
 		if (subtest_str) {
 			*subtest_str = '\0';
 			if (parse_str_list(subtest_str + 1,
-					   &env->subtest_selector.blacklist))
+					   &env->subtest_selector.blacklist,
+					   key == ARG_TEST_NAME_GLOB_DENYLIST))
 				return -ENOMEM;
 		}
-		if (parse_str_list(arg, &env->test_selector.blacklist))
+		if (parse_str_list(arg, &env->test_selector.blacklist,
+				   key == ARG_TEST_NAME_GLOB_DENYLIST))
 			return -ENOMEM;
 		break;
 	}
@@ -755,7 +801,7 @@ int main(int argc, char **argv)
 	save_netns();
 	stdio_hijack();
 	env.has_testmod = true;
-	if (load_bpf_testmod()) {
+	if (!env.list_test_names && load_bpf_testmod()) {
 		fprintf(env.stderr, "WARNING! Selftests relying on bpf_testmod.ko will be skipped.\n");
 		env.has_testmod = false;
 	}
@@ -786,24 +832,25 @@ int main(int argc, char **argv)
 			test__end_subtest();
 
 		test->tested = true;
-		if (test->error_cnt)
-			env.fail_cnt++;
-		else
-			env.succ_cnt++;
-		skip_account();
 
 		dump_test_log(test, test->error_cnt);
 
 		fprintf(env.stdout, "#%d %s:%s\n",
 			test->test_num, test->test_name,
-			test->error_cnt ? "FAIL" : "OK");
+			test->error_cnt ? "FAIL" : (test->skip_cnt ? "SKIP" : "OK"));
+
+		if (test->error_cnt)
+			env.fail_cnt++;
+		else
+			env.succ_cnt++;
+		skip_account();
 
 		reset_affinity();
 		restore_netns();
 		if (test->need_cgroup_cleanup)
 			cleanup_cgroup_environment();
 	}
-	if (env.has_testmod)
+	if (!env.list_test_names && env.has_testmod)
 		unload_bpf_testmod();
 	stdio_restore();
 
diff --git a/tools/testing/selftests/bpf/test_progs.h b/tools/testing/selftests/bpf/test_progs.h
index 8ef7f334e715..c8c2bf878f67 100644
--- a/tools/testing/selftests/bpf/test_progs.h
+++ b/tools/testing/selftests/bpf/test_progs.h
@@ -221,6 +221,18 @@ extern int test__join_cgroup(const char *path);
 	___ok;								\
 })
 
+#define ASSERT_STRNEQ(actual, expected, len, name) ({			\
+	static int duration = 0;					\
+	const char *___act = actual;					\
+	const char *___exp = expected;					\
+	int ___len = len;						\
+	bool ___ok = strncmp(___act, ___exp, ___len) == 0;		\
+	CHECK(!___ok, (name),						\
+	      "unexpected %s: actual '%.*s' != expected '%.*s'\n",	\
+	      (name), ___len, ___act, ___len, ___exp);			\
+	___ok;								\
+})
+
 #define ASSERT_OK(res, name) ({						\
 	static int duration = 0;					\
 	long long ___res = (res);					\
diff --git a/tools/testing/selftests/bpf/test_tc_tunnel.sh b/tools/testing/selftests/bpf/test_tc_tunnel.sh
index c9dde9b9d987..088fcad138c9 100755
--- a/tools/testing/selftests/bpf/test_tc_tunnel.sh
+++ b/tools/testing/selftests/bpf/test_tc_tunnel.sh
@@ -69,7 +69,7 @@ cleanup() {
 }
 
 server_listen() {
-	ip netns exec "${ns2}" nc "${netcat_opt}" -l -p "${port}" > "${outfile}" &
+	ip netns exec "${ns2}" nc "${netcat_opt}" -l "${port}" > "${outfile}" &
 	server_pid=$!
 	sleep 0.2
 }
diff --git a/tools/testing/selftests/bpf/test_xdp_veth.sh b/tools/testing/selftests/bpf/test_xdp_veth.sh
index ba8ffcdaac30..995278e684b6 100755
--- a/tools/testing/selftests/bpf/test_xdp_veth.sh
+++ b/tools/testing/selftests/bpf/test_xdp_veth.sh
@@ -108,7 +108,7 @@ ip link set dev veth2 xdp pinned $BPF_DIR/progs/redirect_map_1
 ip link set dev veth3 xdp pinned $BPF_DIR/progs/redirect_map_2
 
 ip -n ns1 link set dev veth11 xdp obj xdp_dummy.o sec xdp_dummy
-ip -n ns2 link set dev veth22 xdp obj xdp_tx.o sec tx
+ip -n ns2 link set dev veth22 xdp obj xdp_tx.o sec xdp
 ip -n ns3 link set dev veth33 xdp obj xdp_dummy.o sec xdp_dummy
 
 trap cleanup EXIT
diff --git a/tools/testing/selftests/bpf/test_xsk.sh b/tools/testing/selftests/bpf/test_xsk.sh
index 46633a3bfb0b..cd7bf32e6a17 100755
--- a/tools/testing/selftests/bpf/test_xsk.sh
+++ b/tools/testing/selftests/bpf/test_xsk.sh
@@ -63,14 +63,11 @@
 # ----------------
 # Must run with CAP_NET_ADMIN capability.
 #
-# Run (full color-coded output):
-#   sudo ./test_xsk.sh -c
+# Run:
+#   sudo ./test_xsk.sh
 #
 # If running from kselftests:
-#   sudo make colorconsole=1 run_tests
-#
-# Run (full output without color-coding):
-#   sudo ./test_xsk.sh
+#   sudo make run_tests
 #
 # Run with verbose output:
 #   sudo ./test_xsk.sh -v
@@ -83,7 +80,6 @@
 while getopts "cvD" flag
 do
 	case "${flag}" in
-		c) colorconsole=1;;
 		v) verbose=1;;
 		D) dump_pkts=1;;
 	esac
diff --git a/tools/testing/selftests/bpf/trace_helpers.c b/tools/testing/selftests/bpf/trace_helpers.c
index 1bbd1d9830c8..e7a19b04d4ea 100644
--- a/tools/testing/selftests/bpf/trace_helpers.c
+++ b/tools/testing/selftests/bpf/trace_helpers.c
@@ -136,3 +136,90 @@ void read_trace_pipe(void)
 		}
 	}
 }
+
+#if defined(__powerpc64__) && defined(_CALL_ELF) && _CALL_ELF == 2
+
+#define OP_RT_RA_MASK   0xffff0000UL
+#define LIS_R2          0x3c400000UL
+#define ADDIS_R2_R12    0x3c4c0000UL
+#define ADDI_R2_R2      0x38420000UL
+
+ssize_t get_uprobe_offset(const void *addr, ssize_t base)
+{
+	u32 *insn = (u32 *)(uintptr_t)addr;
+
+	/*
+	 * A PPC64 ABIv2 function may have a local and a global entry
+	 * point. We need to use the local entry point when patching
+	 * functions, so identify and step over the global entry point
+	 * sequence.
+	 *
+	 * The global entry point sequence is always of the form:
+	 *
+	 * addis r2,r12,XXXX
+	 * addi  r2,r2,XXXX
+	 *
+	 * A linker optimisation may convert the addis to lis:
+	 *
+	 * lis   r2,XXXX
+	 * addi  r2,r2,XXXX
+	 */
+	if ((((*insn & OP_RT_RA_MASK) == ADDIS_R2_R12) ||
+	     ((*insn & OP_RT_RA_MASK) == LIS_R2)) &&
+	    ((*(insn + 1) & OP_RT_RA_MASK) == ADDI_R2_R2))
+		return (ssize_t)(insn + 2) - base;
+	else
+		return (uintptr_t)addr - base;
+}
+
+#else
+
+ssize_t get_uprobe_offset(const void *addr, ssize_t base)
+{
+	return (uintptr_t)addr - base;
+}
+
+#endif
+
+ssize_t get_base_addr(void)
+{
+	size_t start, offset;
+	char buf[256];
+	FILE *f;
+
+	f = fopen("/proc/self/maps", "r");
+	if (!f)
+		return -errno;
+
+	while (fscanf(f, "%zx-%*x %s %zx %*[^\n]\n",
+		      &start, buf, &offset) == 3) {
+		if (strcmp(buf, "r-xp") == 0) {
+			fclose(f);
+			return start - offset;
+		}
+	}
+
+	fclose(f);
+	return -EINVAL;
+}
+
+ssize_t get_rel_offset(uintptr_t addr)
+{
+	size_t start, end, offset;
+	char buf[256];
+	FILE *f;
+
+	f = fopen("/proc/self/maps", "r");
+	if (!f)
+		return -errno;
+
+	while (fscanf(f, "%zx-%zx %s %zx %*[^\n]\n", &start, &end, buf, &offset) == 4) {
+		if (addr >= start && addr < end) {
+			fclose(f);
+			return (size_t)addr - start + offset;
+		}
+	}
+
+	fclose(f);
+	return -EINVAL;
+}
diff --git a/tools/testing/selftests/bpf/trace_helpers.h b/tools/testing/selftests/bpf/trace_helpers.h
index f62fdef9e589..d907b445524d 100644
--- a/tools/testing/selftests/bpf/trace_helpers.h
+++ b/tools/testing/selftests/bpf/trace_helpers.h
@@ -18,4 +18,8 @@ int kallsyms_find(const char *sym, unsigned long long *addr);
 
 void read_trace_pipe(void);
 
+ssize_t get_uprobe_offset(const void *addr, ssize_t base);
+ssize_t get_base_addr(void);
+ssize_t get_rel_offset(uintptr_t addr);
+
 #endif
diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 1135fb980814..f53ce2683f8d 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -70,7 +70,6 @@
 #include <errno.h>
 #include <getopt.h>
 #include <asm/barrier.h>
-typedef __u16 __sum16;
 #include <linux/if_link.h>
 #include <linux/if_ether.h>
 #include <linux/ip.h>
@@ -106,14 +105,9 @@ static const u16 UDP_PORT2 = 2121;
 
 static void __exit_with_error(int error, const char *file, const char *func, int line)
 {
-	if (configured_mode == TEST_MODE_UNCONFIGURED) {
-		ksft_exit_fail_msg
-		("[%s:%s:%i]: ERROR: %d/\"%s\"\n", file, func, line, error, strerror(error));
-	} else {
-		ksft_test_result_fail
-		("[%s:%s:%i]: ERROR: %d/\"%s\"\n", file, func, line, error, strerror(error));
-		ksft_exit_xfail();
-	}
+	ksft_test_result_fail("[%s:%s:%i]: ERROR: %d/\"%s\"\n", file, func, line, error,
+			      strerror(error));
+	ksft_exit_xfail();
 }
 
 #define exit_with_error(error) __exit_with_error(error, __FILE__, __func__, __LINE__)
@@ -126,7 +120,7 @@ static void __exit_with_error(int error, const char *file, const char *func, int
 			       test_type == TEST_TYPE_STATS ? "Stats" : "",\
 			       test_type == TEST_TYPE_BPF_RES ? "BPF RES" : ""))
 
-static void *memset32_htonl(void *dest, u32 val, u32 size)
+static void memset32_htonl(void *dest, u32 val, u32 size)
 {
 	u32 *ptr = (u32 *)dest;
 	int i;
@@ -135,11 +129,6 @@ static void *memset32_htonl(void *dest, u32 val, u32 size)
 
 	for (i = 0; i < (size & (~0x3)); i += 4)
 		ptr[i >> 2] = val;
-
-	for (; i < size; i++)
-		((char *)dest)[i] = ((char *)&val)[i & 3];
-
-	return dest;
 }
 
 /*
@@ -230,13 +219,13 @@ static void gen_ip_hdr(struct ifobject *ifobject, struct iphdr *ip_hdr)
 	ip_hdr->check = 0;
 }
 
-static void gen_udp_hdr(struct generic_data *data, struct ifobject *ifobject,
+static void gen_udp_hdr(u32 payload, void *pkt, struct ifobject *ifobject,
 			struct udphdr *udp_hdr)
 {
 	udp_hdr->source = htons(ifobject->src_port);
 	udp_hdr->dest = htons(ifobject->dst_port);
 	udp_hdr->len = htons(UDP_PKT_SIZE);
-	memset32_htonl(pkt_data + PKT_HDR_SIZE, htonl(data->seqnum), UDP_PKT_DATA_SIZE);
+	memset32_htonl(pkt + PKT_HDR_SIZE, payload, UDP_PKT_DATA_SIZE);
 }
 
 static void gen_udp_csum(struct udphdr *udp_hdr, struct iphdr *ip_hdr)
@@ -246,12 +235,7 @@ static void gen_udp_csum(struct udphdr *udp_hdr, struct iphdr *ip_hdr)
 	    udp_csum(ip_hdr->saddr, ip_hdr->daddr, UDP_PKT_SIZE, IPPROTO_UDP, (u16 *)udp_hdr);
 }
 
-static void gen_eth_frame(struct xsk_umem_info *umem, u64 addr)
-{
-	memcpy(xsk_umem__get_data(umem->buffer, addr), pkt_data, PKT_SIZE);
-}
-
-static void xsk_configure_umem(struct ifobject *data, void *buffer, int idx)
+static void xsk_configure_umem(struct ifobject *data, void *buffer, u64 size, int idx)
 {
 	struct xsk_umem_config cfg = {
 		.fill_size = XSK_RING_PROD__DEFAULT_NUM_DESCS,
@@ -260,7 +244,6 @@ static void xsk_configure_umem(struct ifobject *data, void *buffer, int idx)
 		.frame_headroom = frame_headroom,
 		.flags = XSK_UMEM__DEFAULT_FLAGS
 	};
-	int size = num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE;
 	struct xsk_umem_info *umem;
 	int ret;
 
@@ -271,7 +254,7 @@ static void xsk_configure_umem(struct ifobject *data, void *buffer, int idx)
 	ret = xsk_umem__create(&umem->umem, buffer, size,
 			       &umem->fq, &umem->cq, &cfg);
 	if (ret)
-		exit_with_error(ret);
+		exit_with_error(-ret);
 
 	umem->buffer = buffer;
 
@@ -285,7 +268,7 @@ static void xsk_populate_fill_ring(struct xsk_umem_info *umem)
 
 	ret = xsk_ring_prod__reserve(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS, &idx);
 	if (ret != XSK_RING_PROD__DEFAULT_NUM_DESCS)
-		exit_with_error(ret);
+		exit_with_error(-ret);
 	for (i = 0; i < XSK_RING_PROD__DEFAULT_NUM_DESCS; i++)
 		*xsk_ring_prod__fill_addr(&umem->fq, idx++) = i * XSK_UMEM__DEFAULT_FRAME_SIZE;
 	xsk_ring_prod__submit(&umem->fq, XSK_RING_PROD__DEFAULT_NUM_DESCS);
@@ -333,20 +316,19 @@ static struct option long_options[] = {
 	{"queue", optional_argument, 0, 'q'},
 	{"dump-pkts", optional_argument, 0, 'D'},
 	{"verbose", no_argument, 0, 'v'},
-	{"tx-pkt-count", optional_argument, 0, 'C'},
 	{0, 0, 0, 0}
 };
 
 static void usage(const char *prog)
 {
 	const char *str =
-	    "  Usage: %s [OPTIONS]\n"
-	    "  Options:\n"
-	    "  -i, --interface      Use interface\n"
-	    "  -q, --queue=n        Use queue n (default 0)\n"
-	    "  -D, --dump-pkts      Dump packets L2 - L5\n"
-	    "  -v, --verbose        Verbose output\n"
-	    "  -C, --tx-pkt-count=n Number of packets to send\n";
+		"  Usage: %s [OPTIONS]\n"
+		"  Options:\n"
+		"  -i, --interface      Use interface\n"
+		"  -q, --queue=n        Use queue n (default 0)\n"
+		"  -D, --dump-pkts      Dump packets L2 - L5\n"
+		"  -v, --verbose        Verbose output\n";
+
 	ksft_print_msg(str, prog);
 }
 
@@ -392,7 +374,7 @@ static void parse_command_line(int argc, char **argv)
 	opterr = 0;
 
 	for (;;) {
-		c = getopt_long(argc, argv, "i:DC:v", long_options, &option_index);
+		c = getopt_long(argc, argv, "i:Dv", long_options, &option_index);
 
 		if (c == -1)
 			break;
@@ -413,13 +395,10 @@ static void parse_command_line(int argc, char **argv)
 			interface_index++;
 			break;
 		case 'D':
-			debug_pkt_dump = 1;
-			break;
-		case 'C':
-			opt_pkt_count = atoi(optarg);
+			opt_pkt_dump = true;
 			break;
 		case 'v':
-			opt_verbose = 1;
+			opt_verbose = true;
 			break;
 		default:
 			usage(basename(argv[0]));
@@ -427,17 +406,143 @@ static void parse_command_line(int argc, char **argv)
 		}
 	}
 
-	if (!opt_pkt_count) {
-		print_verbose("No tx-pkt-count specified, using default %u\n", DEFAULT_PKT_CNT);
-		opt_pkt_count = DEFAULT_PKT_CNT;
-	}
-
 	if (!validate_interfaces()) {
 		usage(basename(argv[0]));
 		ksft_exit_xfail();
 	}
 }
 
+static struct pkt *pkt_stream_get_pkt(struct pkt_stream *pkt_stream, u32 pkt_nb)
+{
+	if (pkt_nb >= pkt_stream->nb_pkts)
+		return NULL;
+
+	return &pkt_stream->pkts[pkt_nb];
+}
+
+static struct pkt_stream *pkt_stream_generate(u32 nb_pkts, u32 pkt_len)
+{
+	struct pkt_stream *pkt_stream;
+	u32 i;
+
+	pkt_stream = malloc(sizeof(*pkt_stream));
+	if (!pkt_stream)
+		exit_with_error(ENOMEM);
+
+	pkt_stream->pkts = calloc(nb_pkts, sizeof(*pkt_stream->pkts));
+	if (!pkt_stream->pkts)
+		exit_with_error(ENOMEM);
+
+	pkt_stream->nb_pkts = nb_pkts;
+	for (i = 0; i < nb_pkts; i++) {
+		pkt_stream->pkts[i].addr = (i % num_frames) * XSK_UMEM__DEFAULT_FRAME_SIZE;
+		pkt_stream->pkts[i].len = pkt_len;
+		pkt_stream->pkts[i].payload = i;
+	}
+
+	return pkt_stream;
+}
+
+static struct pkt *pkt_generate(struct ifobject *ifobject, u32 pkt_nb)
+{
+	struct pkt *pkt = pkt_stream_get_pkt(ifobject->pkt_stream, pkt_nb);
+	struct udphdr *udp_hdr;
+	struct ethhdr *eth_hdr;
+	struct iphdr *ip_hdr;
+	void *data;
+
+	if (!pkt)
+		return NULL;
+
+	data = xsk_umem__get_data(ifobject->umem->buffer, pkt->addr);
+	udp_hdr = (struct udphdr *)(data + sizeof(struct ethhdr) + sizeof(struct iphdr));
+	ip_hdr = (struct iphdr *)(data + sizeof(struct ethhdr));
+	eth_hdr = (struct ethhdr *)data;
+
+	gen_udp_hdr(pkt_nb, data, ifobject, udp_hdr);
+	gen_ip_hdr(ifobject, ip_hdr);
+	gen_udp_csum(udp_hdr, ip_hdr);
+	gen_eth_hdr(ifobject, eth_hdr);
+
+	return pkt;
+}
+
+static void pkt_dump(void *pkt, u32 len)
+{
+	char s[INET_ADDRSTRLEN];
+	struct ethhdr *ethhdr;
+	struct udphdr *udphdr;
+	struct iphdr *iphdr;
+	int payload, i;
+
+	ethhdr = pkt;
+	iphdr = pkt + sizeof(*ethhdr);
+	udphdr = pkt + sizeof(*ethhdr) + sizeof(*iphdr);
+
+	/*extract L2 frame */
+	fprintf(stdout, "DEBUG>> L2: dst mac: ");
+	for (i = 0; i < ETH_ALEN; i++)
+		fprintf(stdout, "%02X", ethhdr->h_dest[i]);
+
+	fprintf(stdout, "\nDEBUG>> L2: src mac: ");
+	for (i = 0; i < ETH_ALEN; i++)
+		fprintf(stdout, "%02X", ethhdr->h_source[i]);
+
+	/*extract L3 frame */
+	fprintf(stdout, "\nDEBUG>> L3: ip_hdr->ihl: %02X\n", iphdr->ihl);
+	fprintf(stdout, "DEBUG>> L3: ip_hdr->saddr: %s\n",
+		inet_ntop(AF_INET, &iphdr->saddr, s, sizeof(s)));
+	fprintf(stdout, "DEBUG>> L3: ip_hdr->daddr: %s\n",
+		inet_ntop(AF_INET, &iphdr->daddr, s, sizeof(s)));
+	/*extract L4 frame */
+	fprintf(stdout, "DEBUG>> L4: udp_hdr->src: %d\n", ntohs(udphdr->source));
+	fprintf(stdout, "DEBUG>> L4: udp_hdr->dst: %d\n", ntohs(udphdr->dest));
+	/*extract L5 frame */
+	payload = *((uint32_t *)(pkt + PKT_HDR_SIZE));
+
+	fprintf(stdout, "DEBUG>> L5: payload: %d\n", payload);
+	fprintf(stdout, "---------------------------------------\n");
+}
+
+static bool is_pkt_valid(struct pkt *pkt, void *buffer, const struct xdp_desc *desc)
+{
+	void *data = xsk_umem__get_data(buffer, desc->addr);
+	struct iphdr *iphdr = (struct iphdr *)(data + sizeof(struct ethhdr));
+
+	if (!pkt) {
+		ksft_test_result_fail("ERROR: [%s] too many packets received\n", __func__);
+		return false;
+	}
+
+	if (iphdr->version == IP_PKT_VER && iphdr->tos == IP_PKT_TOS) {
+		u32 seqnum = ntohl(*((u32 *)(data + PKT_HDR_SIZE)));
+
+		if (opt_pkt_dump && test_type != TEST_TYPE_STATS)
+			pkt_dump(data, PKT_SIZE);
+
+		if (pkt->len != desc->len) {
+			ksft_test_result_fail
+				("ERROR: [%s] expected length [%d], got length [%d]\n",
+					__func__, pkt->len, desc->len);
+			return false;
+		}
+
+		if (pkt->payload != seqnum) {
+			ksft_test_result_fail
+				("ERROR: [%s] expected seqnum [%d], got seqnum [%d]\n",
+					__func__, pkt->payload, seqnum);
+			return false;
+		}
+	} else {
+		ksft_print_msg("Invalid frame received: ");
+		ksft_print_msg("[IP_PKT_VER: %02X], [IP_PKT_TOS: %02X]\n", iphdr->version,
+			       iphdr->tos);
+		return false;
+	}
+
+	return true;
+}
+
 static void kick_tx(struct xsk_socket_info *xsk)
 {
 	int ret;
@@ -448,7 +553,7 @@ static void kick_tx(struct xsk_socket_info *xsk)
 	exit_with_error(errno);
 }
 
-static void complete_tx_only(struct xsk_socket_info *xsk, int batch_size)
+static void complete_pkts(struct xsk_socket_info *xsk, int batch_size)
 {
 	unsigned int rcvd;
 	u32 idx;
@@ -463,133 +568,108 @@ static void complete_tx_only(struct xsk_socket_info *xsk, int batch_size)
 	if (rcvd) {
 		xsk_ring_cons__release(&xsk->umem->cq, rcvd);
 		xsk->outstanding_tx -= rcvd;
-		xsk->tx_npkts += rcvd;
 	}
 }
 
-static void rx_pkt(struct xsk_socket_info *xsk, struct pollfd *fds)
+static void receive_pkts(struct pkt_stream *pkt_stream, struct xsk_socket_info *xsk,
+			 struct pollfd *fds)
 {
-	unsigned int rcvd, i;
-	u32 idx_rx = 0, idx_fq = 0;
+	u32 idx_rx = 0, idx_fq = 0, rcvd, i, pkt_count = 0;
+	struct pkt *pkt;
 	int ret;
 
-	rcvd = xsk_ring_cons__peek(&xsk->rx, BATCH_SIZE, &idx_rx);
-	if (!rcvd) {
-		if (xsk_ring_prod__needs_wakeup(&xsk->umem->fq)) {
-			ret = poll(fds, 1, POLL_TMOUT);
-			if (ret < 0)
-				exit_with_error(ret);
+	pkt = pkt_stream_get_pkt(pkt_stream, pkt_count++);
+	while (pkt) {
+		rcvd = xsk_ring_cons__peek(&xsk->rx, BATCH_SIZE, &idx_rx);
+		if (!rcvd) {
+			if (xsk_ring_prod__needs_wakeup(&xsk->umem->fq)) {
+				ret = poll(fds, 1, POLL_TMOUT);
+				if (ret < 0)
+					exit_with_error(-ret);
+			}
+			continue;
 		}
-		return;
-	}
 
-	ret = xsk_ring_prod__reserve(&xsk->umem->fq, rcvd, &idx_fq);
-	while (ret != rcvd) {
-		if (ret < 0)
-			exit_with_error(ret);
-		if (xsk_ring_prod__needs_wakeup(&xsk->umem->fq)) {
-			ret = poll(fds, 1, POLL_TMOUT);
+		ret = xsk_ring_prod__reserve(&xsk->umem->fq, rcvd, &idx_fq);
+		while (ret != rcvd) {
 			if (ret < 0)
-				exit_with_error(ret);
+				exit_with_error(-ret);
+			if (xsk_ring_prod__needs_wakeup(&xsk->umem->fq)) {
+				ret = poll(fds, 1, POLL_TMOUT);
+				if (ret < 0)
+					exit_with_error(-ret);
+			}
+			ret = xsk_ring_prod__reserve(&xsk->umem->fq, rcvd, &idx_fq);
 		}
-		ret = xsk_ring_prod__reserve(&xsk->umem->fq, rcvd, &idx_fq);
-	}
-
-	for (i = 0; i < rcvd; i++) {
-		u64 addr, orig;
-
-		addr = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx)->addr;
-		xsk_ring_cons__rx_desc(&xsk->rx, idx_rx++);
-		orig = xsk_umem__extract_addr(addr);
 
-		addr = xsk_umem__add_offset_to_addr(addr);
-		pkt_node_rx = malloc(sizeof(struct pkt) + PKT_SIZE);
-		if (!pkt_node_rx)
-			exit_with_error(errno);
+		for (i = 0; i < rcvd; i++) {
+			const struct xdp_desc *desc = xsk_ring_cons__rx_desc(&xsk->rx, idx_rx++);
+			u64 addr = desc->addr, orig;
 
-		pkt_node_rx->pkt_frame = malloc(PKT_SIZE);
-		if (!pkt_node_rx->pkt_frame)
-			exit_with_error(errno);
+			orig = xsk_umem__extract_addr(addr);
+			addr = xsk_umem__add_offset_to_addr(addr);
+			if (!is_pkt_valid(pkt, xsk->umem->buffer, desc))
+				return;
 
-		memcpy(pkt_node_rx->pkt_frame, xsk_umem__get_data(xsk->umem->buffer, addr),
-		       PKT_SIZE);
-
-		TAILQ_INSERT_HEAD(&head, pkt_node_rx, pkt_nodes);
+			*xsk_ring_prod__fill_addr(&xsk->umem->fq, idx_fq++) = orig;
+			pkt = pkt_stream_get_pkt(pkt_stream, pkt_count++);
+		}
 
-		*xsk_ring_prod__fill_addr(&xsk->umem->fq, idx_fq++) = orig;
+		xsk_ring_prod__submit(&xsk->umem->fq, rcvd);
+		xsk_ring_cons__release(&xsk->rx, rcvd);
 	}
-
-	xsk_ring_prod__submit(&xsk->umem->fq, rcvd);
-	xsk_ring_cons__release(&xsk->rx, rcvd);
-	xsk->rx_npkts += rcvd;
 }
 
-static void tx_only(struct xsk_socket_info *xsk, u32 *frameptr, int batch_size)
+static u32 __send_pkts(struct ifobject *ifobject, u32 pkt_nb)
 {
-	u32 idx = 0;
-	unsigned int i;
-	bool tx_invalid_test = stat_test_type == STAT_TEST_TX_INVALID;
-	u32 len = tx_invalid_test ? XSK_UMEM__DEFAULT_FRAME_SIZE + 1 : PKT_SIZE;
+	struct xsk_socket_info *xsk = ifobject->xsk;
+	u32 i, idx;
 
-	while (xsk_ring_prod__reserve(&xsk->tx, batch_size, &idx) < batch_size)
-		complete_tx_only(xsk, batch_size);
+	while (xsk_ring_prod__reserve(&xsk->tx, BATCH_SIZE, &idx) < BATCH_SIZE)
+		complete_pkts(xsk, BATCH_SIZE);
 
-	for (i = 0; i < batch_size; i++) {
+	for (i = 0; i < BATCH_SIZE; i++) {
 		struct xdp_desc *tx_desc = xsk_ring_prod__tx_desc(&xsk->tx, idx + i);
+		struct pkt *pkt = pkt_generate(ifobject, pkt_nb);
 
-		tx_desc->addr = (*frameptr + i) << XSK_UMEM__DEFAULT_FRAME_SHIFT;
-		tx_desc->len = len;
-	}
+		if (!pkt)
+			break;
 
-	xsk_ring_prod__submit(&xsk->tx, batch_size);
-	if (!tx_invalid_test) {
-		xsk->outstanding_tx += batch_size;
-	} else if (xsk_ring_prod__needs_wakeup(&xsk->tx)) {
-		kick_tx(xsk);
+		tx_desc->addr = pkt->addr;
+		tx_desc->len = pkt->len;
+		pkt_nb++;
 	}
-	*frameptr += batch_size;
-	*frameptr %= num_frames;
-	complete_tx_only(xsk, batch_size);
-}
-
-static int get_batch_size(int pkt_cnt)
-{
-	if (!opt_pkt_count)
-		return BATCH_SIZE;
 
-	if (pkt_cnt + BATCH_SIZE <= opt_pkt_count)
-		return BATCH_SIZE;
+	xsk_ring_prod__submit(&xsk->tx, i);
+	if (stat_test_type != STAT_TEST_TX_INVALID)
+		xsk->outstanding_tx += i;
+	else if (xsk_ring_prod__needs_wakeup(&xsk->tx))
+		kick_tx(xsk);
+	complete_pkts(xsk, i);
 
-	return opt_pkt_count - pkt_cnt;
+	return i;
 }
 
-static void complete_tx_only_all(struct ifobject *ifobject)
+static void wait_for_tx_completion(struct xsk_socket_info *xsk)
 {
-	bool pending;
-
-	do {
-		pending = false;
-		if (ifobject->xsk->outstanding_tx) {
-			complete_tx_only(ifobject->xsk, BATCH_SIZE);
-			pending = !!ifobject->xsk->outstanding_tx;
-		}
-	} while (pending);
+	while (xsk->outstanding_tx)
+		complete_pkts(xsk, BATCH_SIZE);
 }
 
-static void tx_only_all(struct ifobject *ifobject)
+static void send_pkts(struct ifobject *ifobject)
 {
 	struct pollfd fds[MAX_SOCKS] = { };
-	u32 frame_nb = 0;
-	int pkt_cnt = 0;
-	int ret;
+	u32 pkt_cnt = 0;
 
 	fds[0].fd = xsk_socket__fd(ifobject->xsk->xsk);
 	fds[0].events = POLLOUT;
 
-	while ((opt_pkt_count && pkt_cnt < opt_pkt_count) || !opt_pkt_count) {
-		int batch_size = get_batch_size(pkt_cnt);
+	while (pkt_cnt < ifobject->pkt_stream->nb_pkts) {
+		u32 sent;
 
 		if (test_type == TEST_TYPE_POLL) {
+			int ret;
+
 			ret = poll(fds, 1, POLL_TMOUT);
 			if (ret <= 0)
 				continue;
@@ -598,78 +678,30 @@ static void tx_only_all(struct ifobject *ifobject)
 				continue;
 		}
 
-		tx_only(ifobject->xsk, &frame_nb, batch_size);
-		pkt_cnt += batch_size;
+		sent = __send_pkts(ifobject, pkt_cnt);
+		pkt_cnt += sent;
+		usleep(10);
 	}
 
-	if (opt_pkt_count)
-		complete_tx_only_all(ifobject);
+	wait_for_tx_completion(ifobject->xsk);
 }
 
-static void worker_pkt_dump(void)
-{
-	struct ethhdr *ethhdr;
-	struct iphdr *iphdr;
-	struct udphdr *udphdr;
-	char s[128];
-	int payload;
-	void *ptr;
-
-	fprintf(stdout, "---------------------------------------\n");
-	for (int iter = 0; iter < num_frames - 1; iter++) {
-		ptr = pkt_buf[iter]->payload;
-		ethhdr = ptr;
-		iphdr = ptr + sizeof(*ethhdr);
-		udphdr = ptr + sizeof(*ethhdr) + sizeof(*iphdr);
-
-		/*extract L2 frame */
-		fprintf(stdout, "DEBUG>> L2: dst mac: ");
-		for (int i = 0; i < ETH_ALEN; i++)
-			fprintf(stdout, "%02X", ethhdr->h_dest[i]);
-
-		fprintf(stdout, "\nDEBUG>> L2: src mac: ");
-		for (int i = 0; i < ETH_ALEN; i++)
-			fprintf(stdout, "%02X", ethhdr->h_source[i]);
-
-		/*extract L3 frame */
-		fprintf(stdout, "\nDEBUG>> L3: ip_hdr->ihl: %02X\n", iphdr->ihl);
-		fprintf(stdout, "DEBUG>> L3: ip_hdr->saddr: %s\n",
-			inet_ntop(AF_INET, &iphdr->saddr, s, sizeof(s)));
-		fprintf(stdout, "DEBUG>> L3: ip_hdr->daddr: %s\n",
-			inet_ntop(AF_INET, &iphdr->daddr, s, sizeof(s)));
-		/*extract L4 frame */
-		fprintf(stdout, "DEBUG>> L4: udp_hdr->src: %d\n", ntohs(udphdr->source));
-		fprintf(stdout, "DEBUG>> L4: udp_hdr->dst: %d\n", ntohs(udphdr->dest));
-		/*extract L5 frame */
-		payload = *((uint32_t *)(ptr + PKT_HDR_SIZE));
-
-		if (payload == EOT) {
-			print_verbose("End-of-transmission frame received\n");
-			fprintf(stdout, "---------------------------------------\n");
-			break;
-		}
-		fprintf(stdout, "DEBUG>> L5: payload: %d\n", payload);
-		fprintf(stdout, "---------------------------------------\n");
-	}
-}
-
-static void worker_stats_validate(struct ifobject *ifobject)
+static bool rx_stats_are_valid(struct ifobject *ifobject)
 {
+	u32 xsk_stat = 0, expected_stat = ifobject->pkt_stream->nb_pkts;
+	struct xsk_socket *xsk = ifobject->xsk->xsk;
+	int fd = xsk_socket__fd(xsk);
 	struct xdp_statistics stats;
 	socklen_t optlen;
 	int err;
-	struct xsk_socket *xsk = stat_test_type == STAT_TEST_TX_INVALID ?
-							ifdict[!ifobject->ifdict_index]->xsk->xsk :
-							ifobject->xsk->xsk;
-	int fd = xsk_socket__fd(xsk);
-	unsigned long xsk_stat = 0, expected_stat = opt_pkt_count;
-
-	sigvar = 0;
 
 	optlen = sizeof(stats);
 	err = getsockopt(fd, SOL_XDP, XDP_STATISTICS, &stats, &optlen);
-	if (err)
-		return;
+	if (err) {
+		ksft_test_result_fail("ERROR: [%s] getsockopt(XDP_STATISTICS) error %u %s\n",
+				      __func__, -err, strerror(-err));
+		return true;
+	}
 
 	if (optlen == sizeof(struct xdp_statistics)) {
 		switch (stat_test_type) {
@@ -677,8 +709,7 @@ static void worker_stats_validate(struct ifobject *ifobject)
 			xsk_stat = stats.rx_dropped;
 			break;
 		case STAT_TEST_TX_INVALID:
-			xsk_stat = stats.tx_invalid_descs;
-			break;
+			return true;
 		case STAT_TEST_RX_FULL:
 			xsk_stat = stats.rx_ring_full;
 			expected_stat -= RX_FULL_RXQSIZE;
@@ -691,99 +722,70 @@ static void worker_stats_validate(struct ifobject *ifobject)
 		}
 
 		if (xsk_stat == expected_stat)
-			sigvar = 1;
+			return true;
 	}
+
+	return false;
 }
 
-static void worker_pkt_validate(void)
+static void tx_stats_validate(struct ifobject *ifobject)
 {
-	u32 payloadseqnum = -2;
-	struct iphdr *iphdr;
-
-	while (1) {
-		pkt_node_rx_q = TAILQ_LAST(&head, head_s);
-		if (!pkt_node_rx_q)
-			break;
-
-		iphdr = (struct iphdr *)(pkt_node_rx_q->pkt_frame + sizeof(struct ethhdr));
-
-		/*do not increment pktcounter if !(tos=0x9 and ipv4) */
-		if (iphdr->version == IP_PKT_VER && iphdr->tos == IP_PKT_TOS) {
-			payloadseqnum = *((uint32_t *)(pkt_node_rx_q->pkt_frame + PKT_HDR_SIZE));
-			if (debug_pkt_dump && payloadseqnum != EOT) {
-				pkt_obj = malloc(sizeof(*pkt_obj));
-				pkt_obj->payload = malloc(PKT_SIZE);
-				memcpy(pkt_obj->payload, pkt_node_rx_q->pkt_frame, PKT_SIZE);
-				pkt_buf[payloadseqnum] = pkt_obj;
-			}
-
-			if (payloadseqnum == EOT) {
-				print_verbose("End-of-transmission frame received: PASS\n");
-				sigvar = 1;
-				break;
-			}
+	struct xsk_socket *xsk = ifobject->xsk->xsk;
+	int fd = xsk_socket__fd(xsk);
+	struct xdp_statistics stats;
+	socklen_t optlen;
+	int err;
 
-			if (prev_pkt + 1 != payloadseqnum) {
-				ksft_test_result_fail
-				    ("ERROR: [%s] prev_pkt [%d], payloadseqnum [%d]\n",
-				     __func__, prev_pkt, payloadseqnum);
-				ksft_exit_xfail();
-			}
+	optlen = sizeof(stats);
+	err = getsockopt(fd, SOL_XDP, XDP_STATISTICS, &stats, &optlen);
+	if (err) {
+		ksft_test_result_fail("ERROR: [%s] getsockopt(XDP_STATISTICS) error %u %s\n",
+				      __func__, -err, strerror(-err));
+		return;
+	}
 
-			prev_pkt = payloadseqnum;
-			pkt_counter++;
-		} else {
-			ksft_print_msg("Invalid frame received: ");
-			ksft_print_msg("[IP_PKT_VER: %02X], [IP_PKT_TOS: %02X]\n", iphdr->version,
-				       iphdr->tos);
-		}
+	if (stats.tx_invalid_descs == ifobject->pkt_stream->nb_pkts)
+		return;
 
-		TAILQ_REMOVE(&head, pkt_node_rx_q, pkt_nodes);
-		free(pkt_node_rx_q->pkt_frame);
-		free(pkt_node_rx_q);
-		pkt_node_rx_q = NULL;
-	}
+	ksft_test_result_fail("ERROR: [%s] tx_invalid_descs incorrect. Got [%u] expected [%u]\n",
+			      __func__, stats.tx_invalid_descs, ifobject->pkt_stream->nb_pkts);
 }
 
 static void thread_common_ops(struct ifobject *ifobject, void *bufs)
 {
-	int umem_sz = num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE;
+	u64 umem_sz = num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE;
+	int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_NORESERVE;
+	size_t mmap_sz = umem_sz;
 	int ctr = 0;
 	int ret;
 
 	ifobject->ns_fd = switch_namespace(ifobject->nsname);
 
 	if (test_type == TEST_TYPE_BPF_RES)
-		umem_sz *= 2;
+		mmap_sz *= 2;
 
-	bufs = mmap(NULL, umem_sz,
-		    PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+	bufs = mmap(NULL, mmap_sz, PROT_READ | PROT_WRITE, mmap_flags, -1, 0);
 	if (bufs == MAP_FAILED)
 		exit_with_error(errno);
 
-	xsk_configure_umem(ifobject, bufs, 0);
-	ifobject->umem = ifobject->umem_arr[0];
-	ret = xsk_configure_socket(ifobject, 0);
-
-	/* Retry Create Socket if it fails as xsk_socket__create()
-	 * is asynchronous
-	 */
-	while (ret && ctr < SOCK_RECONF_CTR) {
-		xsk_configure_umem(ifobject, bufs, 0);
+	while (ctr++ < SOCK_RECONF_CTR) {
+		xsk_configure_umem(ifobject, bufs, umem_sz, 0);
 		ifobject->umem = ifobject->umem_arr[0];
 		ret = xsk_configure_socket(ifobject, 0);
+		if (!ret)
+			break;
+
+		/* Retry Create Socket if it fails as xsk_socket__create() is asynchronous */
 		usleep(USLEEP_MAX);
-		ctr++;
+		if (ctr >= SOCK_RECONF_CTR)
+			exit_with_error(-ret);
 	}
 
-	if (ctr >= SOCK_RECONF_CTR)
-		exit_with_error(ret);
-
 	ifobject->umem = ifobject->umem_arr[0];
 	ifobject->xsk = ifobject->xsk_arr[0];
 
 	if (test_type == TEST_TYPE_BPF_RES) {
-		xsk_configure_umem(ifobject, (u8 *)bufs + (umem_sz / 2), 1);
+		xsk_configure_umem(ifobject, (u8 *)bufs + umem_sz, umem_sz, 1);
 		ifobject->umem = ifobject->umem_arr[1];
 		ret = xsk_configure_socket(ifobject, 1);
 	}
@@ -809,33 +811,18 @@ static void testapp_cleanup_xsk_res(struct ifobject *ifobj)
 
 static void *worker_testapp_validate_tx(void *arg)
 {
-	struct udphdr *udp_hdr =
-	    (struct udphdr *)(pkt_data + sizeof(struct ethhdr) + sizeof(struct iphdr));
-	struct iphdr *ip_hdr = (struct iphdr *)(pkt_data + sizeof(struct ethhdr));
-	struct ethhdr *eth_hdr = (struct ethhdr *)pkt_data;
 	struct ifobject *ifobject = (struct ifobject *)arg;
-	struct generic_data data;
 	void *bufs = NULL;
 
 	if (!second_step)
 		thread_common_ops(ifobject, bufs);
 
-	for (int i = 0; i < num_frames; i++) {
-		/*send EOT frame */
-		if (i == (num_frames - 1))
-			data.seqnum = -1;
-		else
-			data.seqnum = i;
-		gen_udp_hdr(&data, ifobject, udp_hdr);
-		gen_ip_hdr(ifobject, ip_hdr);
-		gen_udp_csum(udp_hdr, ip_hdr);
-		gen_eth_hdr(ifobject, eth_hdr);
-		gen_eth_frame(ifobject->umem, i * XSK_UMEM__DEFAULT_FRAME_SIZE);
-	}
+	print_verbose("Sending %d packets on interface %s\n", ifobject->pkt_stream->nb_pkts,
+		      ifobject->ifname);
+	send_pkts(ifobject);
 
-	print_verbose("Sending %d packets on interface %s\n",
-		      (opt_pkt_count - 1), ifobject->ifname);
-	tx_only_all(ifobject);
+	if (stat_test_type == STAT_TEST_TX_INVALID)
+		tx_stats_validate(ifobject);
 
 	testapp_cleanup_xsk_res(ifobject);
 	pthread_exit(NULL);
@@ -853,31 +840,16 @@ static void *worker_testapp_validate_rx(void *arg)
 	if (stat_test_type != STAT_TEST_RX_FILL_EMPTY)
 		xsk_populate_fill_ring(ifobject->umem);
 
-	TAILQ_INIT(&head);
-	if (debug_pkt_dump) {
-		pkt_buf = calloc(num_frames, sizeof(*pkt_buf));
-		if (!pkt_buf)
-			exit_with_error(errno);
-	}
-
 	fds[0].fd = xsk_socket__fd(ifobject->xsk->xsk);
 	fds[0].events = POLLIN;
 
 	pthread_barrier_wait(&barr);
 
-	while (1) {
-		if (test_type != TEST_TYPE_STATS) {
-			rx_pkt(ifobject->xsk, fds);
-			worker_pkt_validate();
-		} else {
-			worker_stats_validate(ifobject);
-		}
-		if (sigvar)
-			break;
-	}
-
-	print_verbose("Received %d packets on interface %s\n",
-		      pkt_counter, ifobject->ifname);
+	if (test_type == TEST_TYPE_STATS)
+		while (!rx_stats_are_valid(ifobject))
+			continue;
+	else
+		receive_pkts(ifobject->pkt_stream, ifobject->xsk, fds);
 
 	if (test_type == TEST_TYPE_TEARDOWN)
 		print_verbose("Destroying socket\n");
@@ -890,10 +862,18 @@ static void testapp_validate(void)
 {
 	bool bidi = test_type == TEST_TYPE_BIDI;
 	bool bpf = test_type == TEST_TYPE_BPF_RES;
+	struct pkt_stream *pkt_stream;
 
 	if (pthread_barrier_init(&barr, NULL, 2))
 		exit_with_error(errno);
 
+	if (stat_test_type == STAT_TEST_TX_INVALID)
+		pkt_stream = pkt_stream_generate(DEFAULT_PKT_CNT, XSK_UMEM__INVALID_FRAME_SIZE);
+	else
+		pkt_stream = pkt_stream_generate(DEFAULT_PKT_CNT, PKT_SIZE);
+	ifdict_tx->pkt_stream = pkt_stream;
+	ifdict_rx->pkt_stream = pkt_stream;
+
 	/*Spawn RX thread */
 	pthread_create(&t0, NULL, ifdict_rx->func_ptr, ifdict_rx);
 
@@ -907,15 +887,6 @@ static void testapp_validate(void)
 	pthread_join(t1, NULL);
 	pthread_join(t0, NULL);
 
-	if (debug_pkt_dump && test_type != TEST_TYPE_STATS) {
-		worker_pkt_dump();
-		for (int iter = 0; iter < num_frames - 1; iter++) {
-			free(pkt_buf[iter]->payload);
-			free(pkt_buf[iter]);
-		}
-		free(pkt_buf);
-	}
-
 	if (!(test_type == TEST_TYPE_TEARDOWN) && !bidi && !bpf && !(test_type == TEST_TYPE_STATS))
 		print_ksft_result();
 }
@@ -925,9 +896,6 @@ static void testapp_teardown(void)
 	int i;
 
 	for (i = 0; i < MAX_TEARDOWN_ITER; i++) {
-		pkt_counter = 0;
-		prev_pkt = -1;
-		sigvar = 0;
 		print_verbose("Creating socket\n");
 		testapp_validate();
 	}
@@ -953,9 +921,6 @@ static void swap_vectors(struct ifobject *ifobj1, struct ifobject *ifobj2)
 static void testapp_bidi(void)
 {
 	for (int i = 0; i < MAX_BIDI_ITER; i++) {
-		pkt_counter = 0;
-		prev_pkt = -1;
-		sigvar = 0;
 		print_verbose("Creating socket\n");
 		testapp_validate();
 		if (!second_step) {
@@ -987,9 +952,6 @@ static void testapp_bpf_res(void)
 	int i;
 
 	for (i = 0; i < MAX_BPF_ITER; i++) {
-		pkt_counter = 0;
-		prev_pkt = -1;
-		sigvar = 0;
 		print_verbose("Creating socket\n");
 		testapp_validate();
 		if (!second_step)
@@ -1017,6 +979,8 @@ static void testapp_stats(void)
 		case STAT_TEST_RX_FULL:
 			rxqsize = RX_FULL_RXQSIZE;
 			break;
+		case STAT_TEST_TX_INVALID:
+			continue;
 		default:
 			break;
 		}
@@ -1062,10 +1026,7 @@ static void run_pkt_test(int mode, int type)
 
 	/* reset defaults after potential previous test */
 	xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
-	pkt_counter = 0;
 	second_step = 0;
-	prev_pkt = -1;
-	sigvar = 0;
 	stat_test_type = -1;
 	rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
 	frame_headroom = XSK_UMEM__DEFAULT_FRAME_HEADROOM;
@@ -1102,62 +1063,70 @@ static void run_pkt_test(int mode, int type)
 	}
 }
 
+static struct ifobject *ifobject_create(void)
+{
+	struct ifobject *ifobj;
+
+	ifobj = calloc(1, sizeof(struct ifobject));
+	if (!ifobj)
+		return NULL;
+
+	ifobj->xsk_arr = calloc(2, sizeof(struct xsk_socket_info *));
+	if (!ifobj->xsk_arr)
+		goto out_xsk_arr;
+
+	ifobj->umem_arr = calloc(2, sizeof(struct xsk_umem_info *));
+	if (!ifobj->umem_arr)
+		goto out_umem_arr;
+
+	return ifobj;
+
+out_umem_arr:
+	free(ifobj->xsk_arr);
+out_xsk_arr:
+	free(ifobj);
+	return NULL;
+}
+
+static void ifobject_delete(struct ifobject *ifobj)
+{
+	free(ifobj->umem_arr);
+	free(ifobj->xsk_arr);
+	free(ifobj);
+}
+
 int main(int argc, char **argv)
 {
 	struct rlimit _rlim = { RLIM_INFINITY, RLIM_INFINITY };
-	bool failure = false;
 	int i, j;
 
 	if (setrlimit(RLIMIT_MEMLOCK, &_rlim))
 		exit_with_error(errno);
 
-	for (int i = 0; i < MAX_INTERFACES; i++) {
-		ifdict[i] = malloc(sizeof(struct ifobject));
+	for (i = 0; i < MAX_INTERFACES; i++) {
+		ifdict[i] = ifobject_create();
 		if (!ifdict[i])
-			exit_with_error(errno);
-
-		ifdict[i]->ifdict_index = i;
-		ifdict[i]->xsk_arr = calloc(2, sizeof(struct xsk_socket_info *));
-		if (!ifdict[i]->xsk_arr) {
-			failure = true;
-			goto cleanup;
-		}
-		ifdict[i]->umem_arr = calloc(2, sizeof(struct xsk_umem_info *));
-		if (!ifdict[i]->umem_arr) {
-			failure = true;
-			goto cleanup;
-		}
+			exit_with_error(ENOMEM);
 	}
 
 	setlocale(LC_ALL, "");
 
 	parse_command_line(argc, argv);
 
-	num_frames = ++opt_pkt_count;
-
-	init_iface(ifdict[0], MAC1, MAC2, IP1, IP2, UDP_PORT1, UDP_PORT2, tx);
-	init_iface(ifdict[1], MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1, rx);
+	init_iface(ifdict[tx], MAC1, MAC2, IP1, IP2, UDP_PORT1, UDP_PORT2, tx);
+	init_iface(ifdict[rx], MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1, rx);
 
 	ksft_set_plan(TEST_MODE_MAX * TEST_TYPE_MAX);
 
-	for (i = 0; i < TEST_MODE_MAX; i++) {
-		for (j = 0; j < TEST_TYPE_MAX; j++)
+	for (i = 0; i < TEST_MODE_MAX; i++)
+		for (j = 0; j < TEST_TYPE_MAX; j++) {
 			run_pkt_test(i, j);
-	}
-
-cleanup:
-	for (int i = 0; i < MAX_INTERFACES; i++) {
-		if (ifdict[i]->ns_fd != -1)
-			close(ifdict[i]->ns_fd);
-		free(ifdict[i]->xsk_arr);
-		free(ifdict[i]->umem_arr);
-		free(ifdict[i]);
-	}
+			usleep(USLEEP_MAX);
+		}
 
-	if (failure)
-		exit_with_error(errno);
+	for (i = 0; i < MAX_INTERFACES; i++)
+		ifobject_delete(ifdict[i]);
 
 	ksft_exit_pass();
-
 	return 0;
 }
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 6c428b276ab6..7e49b9fbe25e 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -34,28 +34,23 @@
 #define IP_PKT_TOS 0x9
 #define UDP_PKT_SIZE (IP_PKT_SIZE - sizeof(struct iphdr))
 #define UDP_PKT_DATA_SIZE (UDP_PKT_SIZE - sizeof(struct udphdr))
-#define EOT (-1)
-#define USLEEP_MAX 200000
+#define USLEEP_MAX 10000
 #define SOCK_RECONF_CTR 10
-#define BATCH_SIZE 64
+#define BATCH_SIZE 8
 #define POLL_TMOUT 1000
-#define DEFAULT_PKT_CNT 10000
+#define DEFAULT_PKT_CNT (4 * 1024)
 #define RX_FULL_RXQSIZE 32
+#define XSK_UMEM__INVALID_FRAME_SIZE (XSK_UMEM__DEFAULT_FRAME_SIZE + 1)
 
 #define print_verbose(x...) do { if (opt_verbose) ksft_print_msg(x); } while (0)
 
-typedef __u32 u32;
-typedef __u16 u16;
-typedef __u8 u8;
-
-enum TEST_MODES {
-	TEST_MODE_UNCONFIGURED = -1,
+enum test_mode {
 	TEST_MODE_SKB,
 	TEST_MODE_DRV,
 	TEST_MODE_MAX
 };
 
-enum TEST_TYPES {
+enum test_type {
 	TEST_TYPE_NOPOLL,
 	TEST_TYPE_POLL,
 	TEST_TYPE_TEARDOWN,
@@ -65,7 +60,7 @@ enum TEST_TYPES {
 	TEST_TYPE_MAX
 };
 
-enum STAT_TEST_TYPES {
+enum stat_test_type {
 	STAT_TEST_RX_DROPPED,
 	STAT_TEST_TX_INVALID,
 	STAT_TEST_RX_FULL,
@@ -73,21 +68,16 @@ enum STAT_TEST_TYPES {
 	STAT_TEST_TYPE_MAX
 };
 
-static int configured_mode = TEST_MODE_UNCONFIGURED;
-static u8 debug_pkt_dump;
-static u32 num_frames;
+static int configured_mode;
+static bool opt_pkt_dump;
+static u32 num_frames = DEFAULT_PKT_CNT / 4;
 static bool second_step;
 static int test_type;
 
-static int opt_pkt_count;
-static u8 opt_verbose;
+static bool opt_verbose;
 
 static u32 xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
 static u32 xdp_bind_flags = XDP_USE_NEED_WAKEUP | XDP_COPY;
-static u8 pkt_data[XSK_UMEM__DEFAULT_FRAME_SIZE];
-static u32 pkt_counter;
-static long prev_pkt = -1;
-static int sigvar;
 static int stat_test_type;
 static u32 rxqsize;
 static u32 frame_headroom;
@@ -104,10 +94,6 @@ struct xsk_socket_info {
 	struct xsk_ring_prod tx;
 	struct xsk_umem_info *umem;
 	struct xsk_socket *xsk;
-	unsigned long rx_npkts;
-	unsigned long tx_npkts;
-	unsigned long prev_rx_npkts;
-	unsigned long prev_tx_npkts;
 	u32 outstanding_tx;
 };
 
@@ -118,8 +104,15 @@ struct flow_vector {
 	} vector;
 };
 
-struct generic_data {
-	u32 seqnum;
+struct pkt {
+	u64 addr;
+	u32 len;
+	u32 payload;
+};
+
+struct pkt_stream {
+	u32 nb_pkts;
+	struct pkt *pkts;
 };
 
 struct ifobject {
@@ -131,8 +124,8 @@ struct ifobject {
 	struct xsk_umem_info *umem;
 	void *(*func_ptr)(void *arg);
 	struct flow_vector fv;
+	struct pkt_stream *pkt_stream;
 	int ns_fd;
-	int ifdict_index;
 	u32 dst_ip;
 	u32 src_ip;
 	u16 src_port;
@@ -149,18 +142,4 @@ static struct ifobject *ifdict_tx;
 pthread_barrier_t barr;
 pthread_t t0, t1;
 
-TAILQ_HEAD(head_s, pkt) head = TAILQ_HEAD_INITIALIZER(head);
-struct head_s *head_p;
-struct pkt {
-	char *pkt_frame;
-
-	TAILQ_ENTRY(pkt) pkt_nodes;
-} *pkt_node_rx, *pkt_node_rx_q;
-
-struct pkt_frame {
-	char *payload;
-} *pkt_obj;
-
-struct pkt_frame **pkt_buf;
-
 #endif				/* XDPXCEIVER_H */
diff --git a/tools/testing/selftests/bpf/xsk_prereqs.sh b/tools/testing/selftests/bpf/xsk_prereqs.sh
index dac1c5f78752..bf29d2549bee 100755
--- a/tools/testing/selftests/bpf/xsk_prereqs.sh
+++ b/tools/testing/selftests/bpf/xsk_prereqs.sh
@@ -8,14 +8,8 @@ ksft_xfail=2
 ksft_xpass=3
 ksft_skip=4
 
-GREEN='\033[0;92m'
-YELLOW='\033[0;93m'
-RED='\033[0;31m'
-NC='\033[0m'
-STACK_LIM=131072
 SPECFILE=veth.spec
 XSKOBJ=xdpxceiver
-NUMPKTS=10000
 
 validate_root_exec()
 {
@@ -50,22 +44,12 @@ validate_veth_spec_file()
 test_status()
 {
 	statusval=$1
-	if [ -n "${colorconsole+set}" ]; then
-		if [ $statusval -eq 2 ]; then
-			echo -e "${YELLOW}$2${NC}: [ ${RED}FAIL${NC} ]"
-		elif [ $statusval -eq 1 ]; then
-			echo -e "${YELLOW}$2${NC}: [ ${RED}SKIPPED${NC} ]"
-		elif [ $statusval -eq 0 ]; then
-			echo -e "${YELLOW}$2${NC}: [ ${GREEN}PASS${NC} ]"
-		fi
-	else
-		if [ $statusval -eq 2 ]; then
-			echo -e "$2: [ FAIL ]"
-		elif [ $statusval -eq 1 ]; then
-			echo -e "$2: [ SKIPPED ]"
-		elif [ $statusval -eq 0 ]; then
-			echo -e "$2: [ PASS ]"
-		fi
+	if [ $statusval -eq 2 ]; then
+		echo -e "$2: [ FAIL ]"
+	elif [ $statusval -eq 1 ]; then
+		echo -e "$2: [ SKIPPED ]"
+	elif [ $statusval -eq 0 ]; then
+		echo -e "$2: [ PASS ]"
 	fi
 }
 
@@ -107,5 +91,5 @@ validate_ip_utility()
 
 execxdpxceiver()
 {
-	./${XSKOBJ} -i ${VETH0} -i ${VETH1},${NS1} -C ${NUMPKTS} ${VERBOSE_ARG} ${DUMP_PKTS_ARG}
+	./${XSKOBJ} -i ${VETH0} -i ${VETH1},${NS1} ${VERBOSE_ARG} ${DUMP_PKTS_ARG}
 }
diff --git a/tools/testing/selftests/nci/nci_dev.c b/tools/testing/selftests/nci/nci_dev.c
index 57b505cb1561..e1bf55dabdf6 100644
--- a/tools/testing/selftests/nci/nci_dev.c
+++ b/tools/testing/selftests/nci/nci_dev.c
@@ -57,6 +57,29 @@ const __u8 nci_init_rsp_v2[] = {0x40, 0x01, 0x1c, 0x00, 0x1a, 0x7e, 0x06,
 const __u8 nci_rf_disc_map_rsp[] = {0x41, 0x00, 0x01, 0x00};
 const __u8 nci_rf_disc_rsp[] = {0x41, 0x03, 0x01, 0x00};
 const __u8 nci_rf_deact_rsp[] = {0x41, 0x06, 0x01, 0x00};
+const __u8 nci_rf_deact_ntf[] = {0x61, 0x06, 0x02, 0x00, 0x00};
+const __u8 nci_rf_activate_ntf[] = {0x61, 0x05, 0x1D, 0x01, 0x02, 0x04, 0x00,
+				     0xFF, 0xFF, 0x0C, 0x44, 0x03, 0x07, 0x04,
+				     0x62, 0x26, 0x11, 0x80, 0x1D, 0x80, 0x01,
+				     0x20, 0x00, 0x00, 0x00, 0x06, 0x05, 0x75,
+				     0x77, 0x81, 0x02, 0x80};
+const __u8 nci_t4t_select_cmd[] = {0x00, 0x00, 0x0C, 0x00, 0xA4, 0x04, 0x00,
+				    0x07, 0xD2, 0x76, 0x00, 0x00, 0x85, 0x01, 0x01};
+const __u8 nci_t4t_select_cmd2[] = {0x00, 0x00, 0x07, 0x00, 0xA4, 0x00, 0x0C, 0x02,
+				     0xE1, 0x03};
+const __u8 nci_t4t_select_cmd3[] = {0x00, 0x00, 0x07, 0x00, 0xA4, 0x00, 0x0C, 0x02,
+				     0xE1, 0x04};
+const __u8 nci_t4t_read_cmd[] = {0x00, 0x00, 0x05, 0x00, 0xB0, 0x00, 0x00, 0x0F};
+const __u8 nci_t4t_read_rsp[] = {0x00, 0x00, 0x11, 0x00, 0x0F, 0x20, 0x00, 0x3B,
+				  0x00, 0x34, 0x04, 0x06, 0xE1, 0x04, 0x08, 0x00,
+				  0x00, 0x00, 0x90, 0x00};
+const __u8 nci_t4t_read_cmd2[] = {0x00, 0x00, 0x05, 0x00, 0xB0, 0x00, 0x00, 0x02};
+const __u8 nci_t4t_read_rsp2[] = {0x00, 0x00, 0x04, 0x00, 0x0F, 0x90, 0x00};
+const __u8 nci_t4t_read_cmd3[] = {0x00, 0x00, 0x05, 0x00, 0xB0, 0x00, 0x02, 0x0F};
+const __u8 nci_t4t_read_rsp3[] = {0x00, 0x00, 0x11, 0xD1, 0x01, 0x0B, 0x54, 0x02,
+				   0x65, 0x6E, 0x4E, 0x46, 0x43, 0x20, 0x54, 0x45,
+				   0x53, 0x54, 0x90, 0x00};
+const __u8 nci_t4t_rsp_ok[] = {0x00, 0x00, 0x02, 0x90, 0x00};
 
 struct msgtemplate {
 	struct nlmsghdr n;
@@ -87,7 +110,7 @@ error:
 
 static int send_cmd_mt_nla(int sd, __u16 nlmsg_type, __u32 nlmsg_pid,
 			   __u8 genl_cmd, int nla_num, __u16 nla_type[],
-			   void *nla_data[], int nla_len[])
+			   void *nla_data[], int nla_len[], __u16 flags)
 {
 	struct sockaddr_nl nladdr;
 	struct msgtemplate msg;
@@ -98,7 +121,7 @@ static int send_cmd_mt_nla(int sd, __u16 nlmsg_type, __u32 nlmsg_pid,
 
 	msg.n.nlmsg_len = NLMSG_LENGTH(GENL_HDRLEN);
 	msg.n.nlmsg_type = nlmsg_type;
-	msg.n.nlmsg_flags = NLM_F_REQUEST;
+	msg.n.nlmsg_flags = flags;
 	msg.n.nlmsg_seq = 0;
 	msg.n.nlmsg_pid = nlmsg_pid;
 	msg.g.cmd = genl_cmd;
@@ -110,11 +133,11 @@ static int send_cmd_mt_nla(int sd, __u16 nlmsg_type, __u32 nlmsg_pid,
 		na->nla_type = nla_type[cnt];
 		na->nla_len = nla_len[cnt] + NLA_HDRLEN;
 
-		if (nla_len > 0)
+		if (nla_len[cnt] > 0)
 			memcpy(NLA_DATA(na), nla_data[cnt], nla_len[cnt]);
 
-		msg.n.nlmsg_len += NLMSG_ALIGN(na->nla_len);
-		prv_len = na->nla_len;
+		prv_len = NLA_ALIGN(nla_len[cnt]) + NLA_HDRLEN;
+		msg.n.nlmsg_len += prv_len;
 	}
 
 	buf = (char *)&msg;
@@ -146,11 +169,11 @@ static int send_get_nfc_family(int sd, __u32 pid)
 	nla_get_family_data = family_name;
 
 	return send_cmd_mt_nla(sd, GENL_ID_CTRL, pid, CTRL_CMD_GETFAMILY,
-				1, &nla_get_family_type,
-				&nla_get_family_data, &nla_get_family_len);
+				1, &nla_get_family_type, &nla_get_family_data,
+				&nla_get_family_len, NLM_F_REQUEST);
 }
 
-static int get_family_id(int sd, __u32 pid)
+static int get_family_id(int sd, __u32 pid, __u32 *event_group)
 {
 	struct {
 		struct nlmsghdr n;
@@ -158,8 +181,9 @@ static int get_family_id(int sd, __u32 pid)
 		char buf[512];
 	} ans;
 	struct nlattr *na;
-	int rep_len;
+	int resp_len;
 	__u16 id;
+	int len;
 	int rc;
 
 	rc = send_get_nfc_family(sd, pid);
@@ -167,17 +191,49 @@ static int get_family_id(int sd, __u32 pid)
 	if (rc < 0)
 		return 0;
 
-	rep_len = recv(sd, &ans, sizeof(ans), 0);
+	resp_len = recv(sd, &ans, sizeof(ans), 0);
 
-	if (ans.n.nlmsg_type == NLMSG_ERROR || rep_len < 0 ||
-	    !NLMSG_OK(&ans.n, rep_len))
+	if (ans.n.nlmsg_type == NLMSG_ERROR || resp_len < 0 ||
+	    !NLMSG_OK(&ans.n, resp_len))
 		return 0;
 
+	len = 0;
+	resp_len = GENLMSG_PAYLOAD(&ans.n);
 	na = (struct nlattr *)GENLMSG_DATA(&ans);
-	na = (struct nlattr *)((char *)na + NLA_ALIGN(na->nla_len));
-	if (na->nla_type == CTRL_ATTR_FAMILY_ID)
-		id = *(__u16 *)NLA_DATA(na);
 
+	while (len < resp_len) {
+		len += NLA_ALIGN(na->nla_len);
+		if (na->nla_type == CTRL_ATTR_FAMILY_ID) {
+			id = *(__u16 *)NLA_DATA(na);
+		} else if (na->nla_type == CTRL_ATTR_MCAST_GROUPS) {
+			struct nlattr *nested_na;
+			struct nlattr *group_na;
+			int group_attr_len;
+			int group_attr;
+
+			nested_na = (struct nlattr *)((char *)na + NLA_HDRLEN);
+			group_na = (struct nlattr *)((char *)nested_na + NLA_HDRLEN);
+			group_attr_len = 0;
+
+			for (group_attr = CTRL_ATTR_MCAST_GRP_UNSPEC;
+				group_attr < CTRL_ATTR_MCAST_GRP_MAX; group_attr++) {
+				if (group_na->nla_type == CTRL_ATTR_MCAST_GRP_ID) {
+					*event_group = *(__u32 *)((char *)group_na +
+								  NLA_HDRLEN);
+					break;
+				}
+
+				group_attr_len += NLA_ALIGN(group_na->nla_len) +
+						  NLA_HDRLEN;
+				if (group_attr_len >= nested_na->nla_len)
+					break;
+
+				group_na = (struct nlattr *)((char *)group_na +
+							     NLA_ALIGN(group_na->nla_len));
+			}
+		}
+		na = (struct nlattr *)(GENLMSG_DATA(&ans) + len);
+	}
 	return id;
 }
 
@@ -189,12 +245,12 @@ static int send_cmd_with_idx(int sd, __u16 nlmsg_type, __u32 nlmsg_pid,
 	int nla_len = 4;
 
 	return send_cmd_mt_nla(sd, nlmsg_type, nlmsg_pid, genl_cmd, 1,
-				&nla_type, &nla_data, &nla_len);
+				&nla_type, &nla_data, &nla_len, NLM_F_REQUEST);
 }
 
 static int get_nci_devid(int sd, __u16 fid, __u32 pid, int dev_id, struct msgtemplate *msg)
 {
-	int rc, rep_len;
+	int rc, resp_len;
 
 	rc = send_cmd_with_idx(sd, fid, pid, NFC_CMD_GET_DEVICE, dev_id);
 	if (rc < 0) {
@@ -202,14 +258,14 @@ static int get_nci_devid(int sd, __u16 fid, __u32 pid, int dev_id, struct msgtem
 		goto error;
 	}
 
-	rep_len = recv(sd, msg, sizeof(*msg), 0);
-	if (rep_len < 0) {
+	resp_len = recv(sd, msg, sizeof(*msg), 0);
+	if (resp_len < 0) {
 		rc = -2;
 		goto error;
 	}
 
 	if (msg->n.nlmsg_type == NLMSG_ERROR ||
-	    !NLMSG_OK(&msg->n, rep_len)) {
+	    !NLMSG_OK(&msg->n, resp_len)) {
 		rc = -3;
 		goto error;
 	}
@@ -222,21 +278,21 @@ error:
 static __u8 get_dev_enable_state(struct msgtemplate *msg)
 {
 	struct nlattr *na;
-	int rep_len;
+	int resp_len;
 	int len;
 
-	rep_len = GENLMSG_PAYLOAD(&msg->n);
+	resp_len = GENLMSG_PAYLOAD(&msg->n);
 	na = (struct nlattr *)GENLMSG_DATA(msg);
 	len = 0;
 
-	while (len < rep_len) {
+	while (len < resp_len) {
 		len += NLA_ALIGN(na->nla_len);
 		if (na->nla_type == NFC_ATTR_DEVICE_POWERED)
 			return *(char *)NLA_DATA(na);
 		na = (struct nlattr *)(GENLMSG_DATA(msg) + len);
 	}
 
-	return rep_len;
+	return resp_len;
 }
 
 FIXTURE(NCI) {
@@ -270,8 +326,7 @@ static void *virtual_dev_open(void *data)
 
 	dev_fd = *(int *)data;
 
-	while ((len = read(dev_fd, buf, 258)) == 0)
-		;
+	len = read(dev_fd, buf, 258);
 	if (len <= 0)
 		goto error;
 	if (len != sizeof(nci_reset_cmd))
@@ -280,8 +335,7 @@ static void *virtual_dev_open(void *data)
 		goto error;
 	write(dev_fd, nci_reset_rsp, sizeof(nci_reset_rsp));
 
-	while ((len = read(dev_fd, buf, 258)) == 0)
-		;
+	len = read(dev_fd, buf, 258);
 	if (len <= 0)
 		goto error;
 	if (len != sizeof(nci_init_cmd))
@@ -290,8 +344,7 @@ static void *virtual_dev_open(void *data)
 		goto error;
 	write(dev_fd, nci_init_rsp, sizeof(nci_init_rsp));
 
-	while ((len = read(dev_fd, buf, 258)) == 0)
-		;
+	len = read(dev_fd, buf, 258);
 	if (len <= 0)
 		goto error;
 	if (len != sizeof(nci_rf_disc_map_cmd))
@@ -313,8 +366,7 @@ static void *virtual_dev_open_v2(void *data)
 
 	dev_fd = *(int *)data;
 
-	while ((len = read(dev_fd, buf, 258)) == 0)
-		;
+	len = read(dev_fd, buf, 258);
 	if (len <= 0)
 		goto error;
 	if (len != sizeof(nci_reset_cmd))
@@ -324,8 +376,7 @@ static void *virtual_dev_open_v2(void *data)
 	write(dev_fd, nci_reset_rsp_v2, sizeof(nci_reset_rsp_v2));
 	write(dev_fd, nci_reset_ntf, sizeof(nci_reset_ntf));
 
-	while ((len = read(dev_fd, buf, 258)) == 0)
-		;
+	len = read(dev_fd, buf, 258);
 	if (len <= 0)
 		goto error;
 	if (len != sizeof(nci_init_cmd_v2))
@@ -334,8 +385,7 @@ static void *virtual_dev_open_v2(void *data)
 		goto error;
 	write(dev_fd, nci_init_rsp_v2, sizeof(nci_init_rsp_v2));
 
-	while ((len = read(dev_fd, buf, 258)) == 0)
-		;
+	len = read(dev_fd, buf, 258);
 	if (len <= 0)
 		goto error;
 	if (len != sizeof(nci_rf_disc_map_cmd))
@@ -353,6 +403,7 @@ FIXTURE_SETUP(NCI)
 {
 	struct msgtemplate msg;
 	pthread_t thread_t;
+	__u32 event_group;
 	int status;
 	int rc;
 
@@ -364,12 +415,16 @@ FIXTURE_SETUP(NCI)
 	ASSERT_NE(self->sd, -1);
 
 	self->pid = getpid();
-	self->fid = get_family_id(self->sd, self->pid);
+	self->fid = get_family_id(self->sd, self->pid, &event_group);
 	ASSERT_NE(self->fid, -1);
 
 	self->virtual_nci_fd = open("/dev/virtual_nci", O_RDWR);
 	ASSERT_GT(self->virtual_nci_fd, -1);
 
+	rc = setsockopt(self->sd, SOL_NETLINK, NETLINK_ADD_MEMBERSHIP, &event_group,
+			sizeof(event_group));
+	ASSERT_NE(rc, -1);
+
 	rc = ioctl(self->virtual_nci_fd, IOCTL_GET_NCIDEV_IDX, &self->dev_idex);
 	ASSERT_EQ(rc, 0);
 
@@ -402,8 +457,7 @@ static void *virtual_deinit(void *data)
 
 	dev_fd = *(int *)data;
 
-	while ((len = read(dev_fd, buf, 258)) == 0)
-		;
+	len = read(dev_fd, buf, 258);
 	if (len <= 0)
 		goto error;
 	if (len != sizeof(nci_reset_cmd))
@@ -425,8 +479,7 @@ static void *virtual_deinit_v2(void *data)
 
 	dev_fd = *(int *)data;
 
-	while ((len = read(dev_fd, buf, 258)) == 0)
-		;
+	len = read(dev_fd, buf, 258);
 	if (len <= 0)
 		goto error;
 	if (len != sizeof(nci_reset_cmd))
@@ -489,16 +542,14 @@ static void *virtual_poll_start(void *data)
 
 	dev_fd = *(int *)data;
 
-	while ((len = read(dev_fd, buf, 258)) == 0)
-		;
+	len = read(dev_fd, buf, 258);
 	if (len <= 0)
 		goto error;
 	if (len != sizeof(nci_rf_discovery_cmd))
 		goto error;
 	if (memcmp(nci_rf_discovery_cmd, buf, len))
 		goto error;
-	write(dev_fd, nci_rf_disc_rsp, sizeof(nci_rf_disc_rsp))
-		;
+	write(dev_fd, nci_rf_disc_rsp, sizeof(nci_rf_disc_rsp));
 
 	return (void *)0;
 error:
@@ -513,8 +564,7 @@ static void *virtual_poll_stop(void *data)
 
 	dev_fd = *(int *)data;
 
-	while ((len = read(dev_fd, buf, 258)) == 0)
-		;
+	len = read(dev_fd, buf, 258);
 	if (len <= 0)
 		goto error;
 	if (len != sizeof(nci_rf_deact_cmd))
@@ -528,38 +578,282 @@ error:
 	return (void *)-1;
 }
 
-TEST_F(NCI, start_poll)
+int start_polling(int dev_idx, int proto, int virtual_fd, int sd, int fid, int pid)
 {
 	__u16 nla_start_poll_type[2] = {NFC_ATTR_DEVICE_INDEX,
 					 NFC_ATTR_PROTOCOLS};
-	void *nla_start_poll_data[2] = {&self->dev_idex, &self->proto};
+	void *nla_start_poll_data[2] = {&dev_idx, &proto};
 	int nla_start_poll_len[2] = {4, 4};
 	pthread_t thread_t;
 	int status;
 	int rc;
 
 	rc = pthread_create(&thread_t, NULL, virtual_poll_start,
-			    (void *)&self->virtual_nci_fd);
-	ASSERT_GT(rc, -1);
+			    (void *)&virtual_fd);
+	if (rc < 0)
+		return rc;
 
-	rc = send_cmd_mt_nla(self->sd, self->fid, self->pid,
-			     NFC_CMD_START_POLL, 2, nla_start_poll_type,
-			     nla_start_poll_data, nla_start_poll_len);
-	EXPECT_EQ(rc, 0);
+	rc = send_cmd_mt_nla(sd, fid, pid, NFC_CMD_START_POLL, 2, nla_start_poll_type,
+			     nla_start_poll_data, nla_start_poll_len, NLM_F_REQUEST);
+	if (rc != 0)
+		return rc;
 
 	pthread_join(thread_t, (void **)&status);
-	ASSERT_EQ(status, 0);
+	return status;
+}
+
+int stop_polling(int dev_idx, int virtual_fd, int sd, int fid, int pid)
+{
+	pthread_t thread_t;
+	int status;
+	int rc;
 
 	rc = pthread_create(&thread_t, NULL, virtual_poll_stop,
-			    (void *)&self->virtual_nci_fd);
-	ASSERT_GT(rc, -1);
+			    (void *)&virtual_fd);
+	if (rc < 0)
+		return rc;
 
-	rc = send_cmd_with_idx(self->sd, self->fid, self->pid,
-			       NFC_CMD_STOP_POLL, self->dev_idex);
-	EXPECT_EQ(rc, 0);
+	rc = send_cmd_with_idx(sd, fid, pid,
+			       NFC_CMD_STOP_POLL, dev_idx);
+	if (rc != 0)
+		return rc;
 
 	pthread_join(thread_t, (void **)&status);
+	return status;
+}
+
+TEST_F(NCI, start_poll)
+{
+	int status;
+
+	status = start_polling(self->dev_idex, self->proto, self->virtual_nci_fd,
+			       self->sd, self->fid, self->pid);
+	EXPECT_EQ(status, 0);
+
+	status = stop_polling(self->dev_idex, self->virtual_nci_fd, self->sd,
+			      self->fid, self->pid);
+	EXPECT_EQ(status, 0);
+}
+
+int get_taginfo(int dev_idx, int sd, int fid, int pid)
+{
+	struct {
+		struct nlmsghdr n;
+		struct genlmsghdr g;
+		char buf[512];
+	} ans;
+
+	struct nlattr *na;
+	__u32 protocol;
+	int targetidx;
+	__u8 sel_res;
+	int resp_len;
+	int len;
+
+	__u16 tagid_type;
+	void *tagid_type_data;
+	int tagid_len;
+
+	tagid_type = NFC_ATTR_DEVICE_INDEX;
+	tagid_type_data = &dev_idx;
+	tagid_len = 4;
+
+	send_cmd_mt_nla(sd, fid, pid, NFC_CMD_GET_TARGET, 1, &tagid_type,
+			&tagid_type_data, &tagid_len, NLM_F_REQUEST | NLM_F_DUMP);
+	resp_len = recv(sd, &ans, sizeof(ans), 0);
+	if (ans.n.nlmsg_type == NLMSG_ERROR || resp_len < 0 ||
+	    !NLMSG_OK(&ans.n, resp_len))
+		return -1;
+
+	resp_len = GENLMSG_PAYLOAD(&ans.n);
+	na = (struct nlattr *)GENLMSG_DATA(&ans);
+
+	len = 0;
+	targetidx = -1;
+	protocol = -1;
+	sel_res = -1;
+
+	while (len < resp_len) {
+		len += NLA_ALIGN(na->nla_len);
+
+		if (na->nla_type == NFC_ATTR_TARGET_INDEX)
+			targetidx = *(int *)((char *)na + NLA_HDRLEN);
+		else if (na->nla_type == NFC_ATTR_TARGET_SEL_RES)
+			sel_res = *(__u8 *)((char *)na + NLA_HDRLEN);
+		else if (na->nla_type == NFC_ATTR_PROTOCOLS)
+			protocol = *(__u32 *)((char *)na + NLA_HDRLEN);
+
+		na = (struct nlattr *)(GENLMSG_DATA(&ans) + len);
+	}
+
+	if (targetidx == -1 || sel_res != 0x20 || protocol != NFC_PROTO_ISO14443_MASK)
+		return -1;
+
+	return targetidx;
+}
+
+int connect_socket(int dev_idx, int target_idx)
+{
+	struct sockaddr_nfc addr;
+	int sock;
+	int err = 0;
+
+	sock = socket(AF_NFC, SOCK_SEQPACKET, NFC_SOCKPROTO_RAW);
+	if (sock == -1)
+		return -1;
+
+	addr.sa_family = AF_NFC;
+	addr.dev_idx = dev_idx;
+	addr.target_idx = target_idx;
+	addr.nfc_protocol = NFC_PROTO_ISO14443;
+
+	err = connect(sock, (struct sockaddr *)&addr, sizeof(addr));
+	if (err) {
+		close(sock);
+		return -1;
+	}
+
+	return sock;
+}
+
+int connect_tag(int dev_idx, int virtual_fd, int sd, int fid, int pid)
+{
+	struct genlmsghdr *genlhdr;
+	struct nlattr *na;
+	char evt_data[255];
+	int target_idx;
+	int resp_len;
+	int evt_dev;
+
+	write(virtual_fd, nci_rf_activate_ntf, sizeof(nci_rf_activate_ntf));
+	resp_len = recv(sd, evt_data, sizeof(evt_data), 0);
+	if (resp_len < 0)
+		return -1;
+
+	genlhdr = (struct genlmsghdr *)((struct nlmsghdr *)evt_data + 1);
+	na = (struct nlattr *)(genlhdr + 1);
+	evt_dev = *(int *)((char *)na + NLA_HDRLEN);
+	if (dev_idx != evt_dev)
+		return -1;
+
+	target_idx = get_taginfo(dev_idx, sd, fid, pid);
+	if (target_idx == -1)
+		return -1;
+	return connect_socket(dev_idx, target_idx);
+}
+
+int read_write_nci_cmd(int nfc_sock, int virtual_fd, const __u8 *cmd, __u32 cmd_len,
+		       const __u8 *rsp, __u32 rsp_len)
+{
+	char buf[256];
+	unsigned int len;
+
+	send(nfc_sock, &cmd[3], cmd_len - 3, 0);
+	len = read(virtual_fd, buf, cmd_len);
+	if (len < 0 || memcmp(buf, cmd, cmd_len))
+		return -1;
+
+	write(virtual_fd, rsp, rsp_len);
+	len = recv(nfc_sock, buf, rsp_len - 2, 0);
+	if (len < 0 || memcmp(&buf[1], &rsp[3], rsp_len - 3))
+		return -1;
+
+	return 0;
+}
+
+int read_tag(int nfc_sock, int virtual_fd)
+{
+	if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_select_cmd,
+			       sizeof(nci_t4t_select_cmd), nci_t4t_rsp_ok,
+			       sizeof(nci_t4t_rsp_ok)))
+		return -1;
+
+	if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_select_cmd2,
+			       sizeof(nci_t4t_select_cmd2), nci_t4t_rsp_ok,
+			       sizeof(nci_t4t_rsp_ok)))
+		return -1;
+
+	if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_read_cmd,
+			       sizeof(nci_t4t_read_cmd), nci_t4t_read_rsp,
+			       sizeof(nci_t4t_read_rsp)))
+		return -1;
+
+	if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_select_cmd3,
+			       sizeof(nci_t4t_select_cmd3), nci_t4t_rsp_ok,
+			       sizeof(nci_t4t_rsp_ok)))
+		return -1;
+
+	if (read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_read_cmd2,
+			       sizeof(nci_t4t_read_cmd2), nci_t4t_read_rsp2,
+			       sizeof(nci_t4t_read_rsp2)))
+		return -1;
+
+	return read_write_nci_cmd(nfc_sock, virtual_fd, nci_t4t_read_cmd3,
+				  sizeof(nci_t4t_read_cmd3), nci_t4t_read_rsp3,
+				  sizeof(nci_t4t_read_rsp3));
+}
+
+static void *virtual_deactivate_proc(void *data)
+{
+	int virtual_fd;
+	char buf[256];
+	int deactcmd_len;
+	int len;
+
+	virtual_fd = *(int *)data;
+	deactcmd_len = sizeof(nci_rf_deact_cmd);
+	len = read(virtual_fd, buf, deactcmd_len);
+	if (len != deactcmd_len || memcmp(buf, nci_rf_deact_cmd, deactcmd_len))
+		return (void *)-1;
+
+	write(virtual_fd, nci_rf_deact_rsp, sizeof(nci_rf_deact_rsp));
+	write(virtual_fd, nci_rf_deact_ntf, sizeof(nci_rf_deact_ntf));
+
+	return (void *)0;
+}
+
+int disconnect_tag(int nfc_sock, int virtual_fd)
+{
+	pthread_t thread_t;
+	char buf[256];
+	int status;
+	int len;
+
+	send(nfc_sock, &nci_t4t_select_cmd3[3], sizeof(nci_t4t_select_cmd3) - 3, 0);
+	len = read(virtual_fd, buf, sizeof(nci_t4t_select_cmd3));
+	if (len < 0 || memcmp(buf, nci_t4t_select_cmd3, sizeof(nci_t4t_select_cmd3)))
+		return -1;
+
+	len = recv(nfc_sock, buf, sizeof(nci_t4t_rsp_ok), 0);
+	if (len != -1)
+		return -1;
+
+	status = pthread_create(&thread_t, NULL, virtual_deactivate_proc,
+				(void *)&virtual_fd);
+
+	close(nfc_sock);
+	pthread_join(thread_t, (void **)&status);
+	return status;
+}
+
+TEST_F(NCI, t4t_tag_read)
+{
+	int nfc_sock;
+	int status;
+
+	status = start_polling(self->dev_idex, self->proto, self->virtual_nci_fd,
+			       self->sd, self->fid, self->pid);
+	EXPECT_EQ(status, 0);
+
+	nfc_sock = connect_tag(self->dev_idex, self->virtual_nci_fd, self->sd,
+			       self->fid, self->pid);
+	ASSERT_GT(nfc_sock, -1);
+
+	status = read_tag(nfc_sock, self->virtual_nci_fd);
 	ASSERT_EQ(status, 0);
+
+	status = disconnect_tag(nfc_sock, self->virtual_nci_fd);
+	EXPECT_EQ(status, 0);
 }
 
 TEST_F(NCI, deinit)
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 79c9eb0034d5..378c0aac5a1a 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile
@@ -25,6 +25,8 @@ TEST_PROGS += bareudp.sh
 TEST_PROGS += unicast_extensions.sh
 TEST_PROGS += udpgro_fwd.sh
 TEST_PROGS += veth.sh
+TEST_PROGS += ioam6.sh
+TEST_PROGS += gro.sh
 TEST_PROGS_EXTENDED := in_netns.sh
 TEST_GEN_FILES =  socket nettest
 TEST_GEN_FILES += psock_fanout psock_tpacket msg_zerocopy reuseport_addr_any
@@ -36,8 +38,11 @@ TEST_GEN_FILES += fin_ack_lat
 TEST_GEN_FILES += reuseaddr_ports_exhausted
 TEST_GEN_FILES += hwtstamp_config rxtimestamp timestamping txtimestamp
 TEST_GEN_FILES += ipsec
+TEST_GEN_FILES += ioam6_parser
+TEST_GEN_FILES += gro
 TEST_GEN_PROGS = reuseport_bpf reuseport_bpf_cpu reuseport_bpf_numa
 TEST_GEN_PROGS += reuseport_dualstack reuseaddr_conflict tls
+TEST_GEN_FILES += toeplitz
 
 TEST_FILES := settings
 
diff --git a/tools/testing/selftests/net/af_unix/Makefile b/tools/testing/selftests/net/af_unix/Makefile
new file mode 100644
index 000000000000..cfc7f4f97fd1
--- /dev/null
+++ b/tools/testing/selftests/net/af_unix/Makefile
@@ -0,0 +1,5 @@
+##TEST_GEN_FILES := test_unix_oob
+TEST_PROGS := test_unix_oob
+include ../../lib.mk
+
+all: $(TEST_PROGS)
diff --git a/tools/testing/selftests/net/af_unix/test_unix_oob.c b/tools/testing/selftests/net/af_unix/test_unix_oob.c
new file mode 100644
index 000000000000..0f3e3763f4f8
--- /dev/null
+++ b/tools/testing/selftests/net/af_unix/test_unix_oob.c
@@ -0,0 +1,437 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+#include <stdio.h>
+#include <stdlib.h>
+#include <sys/socket.h>
+#include <arpa/inet.h>
+#include <unistd.h>
+#include <string.h>
+#include <fcntl.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+#include <netinet/tcp.h>
+#include <sys/un.h>
+#include <sys/signal.h>
+#include <sys/poll.h>
+
+static int pipefd[2];
+static int signal_recvd;
+static pid_t producer_id;
+static char sock_name[32];
+
+static void sig_hand(int sn, siginfo_t *si, void *p)
+{
+	signal_recvd = sn;
+}
+
+static int set_sig_handler(int signal)
+{
+	struct sigaction sa;
+
+	sa.sa_sigaction = sig_hand;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = SA_SIGINFO | SA_RESTART;
+
+	return sigaction(signal, &sa, NULL);
+}
+
+static void set_filemode(int fd, int set)
+{
+	int flags = fcntl(fd, F_GETFL, 0);
+
+	if (set)
+		flags &= ~O_NONBLOCK;
+	else
+		flags |= O_NONBLOCK;
+	fcntl(fd, F_SETFL, flags);
+}
+
+static void signal_producer(int fd)
+{
+	char cmd;
+
+	cmd = 'S';
+	write(fd, &cmd, sizeof(cmd));
+}
+
+static void wait_for_signal(int fd)
+{
+	char buf[5];
+
+	read(fd, buf, 5);
+}
+
+static void die(int status)
+{
+	fflush(NULL);
+	unlink(sock_name);
+	kill(producer_id, SIGTERM);
+	exit(status);
+}
+
+int is_sioctatmark(int fd)
+{
+	int ans = -1;
+
+	if (ioctl(fd, SIOCATMARK, &ans, sizeof(ans)) < 0) {
+#ifdef DEBUG
+		perror("SIOCATMARK Failed");
+#endif
+	}
+	return ans;
+}
+
+void read_oob(int fd, char *c)
+{
+
+	*c = ' ';
+	if (recv(fd, c, sizeof(*c), MSG_OOB) < 0) {
+#ifdef DEBUG
+		perror("Reading MSG_OOB Failed");
+#endif
+	}
+}
+
+int read_data(int pfd, char *buf, int size)
+{
+	int len = 0;
+
+	memset(buf, size, '0');
+	len = read(pfd, buf, size);
+#ifdef DEBUG
+	if (len < 0)
+		perror("read failed");
+#endif
+	return len;
+}
+
+static void wait_for_data(int pfd, int event)
+{
+	struct pollfd pfds[1];
+
+	pfds[0].fd = pfd;
+	pfds[0].events = event;
+	poll(pfds, 1, -1);
+}
+
+void producer(struct sockaddr_un *consumer_addr)
+{
+	int cfd;
+	char buf[64];
+	int i;
+
+	memset(buf, 'x', sizeof(buf));
+	cfd = socket(AF_UNIX, SOCK_STREAM, 0);
+
+	wait_for_signal(pipefd[0]);
+	if (connect(cfd, (struct sockaddr *)consumer_addr,
+		     sizeof(struct sockaddr)) != 0) {
+		perror("Connect failed");
+		kill(0, SIGTERM);
+		exit(1);
+	}
+
+	for (i = 0; i < 2; i++) {
+		/* Test 1: Test for SIGURG and OOB */
+		wait_for_signal(pipefd[0]);
+		memset(buf, 'x', sizeof(buf));
+		buf[63] = '@';
+		send(cfd, buf, sizeof(buf), MSG_OOB);
+
+		wait_for_signal(pipefd[0]);
+
+		/* Test 2: Test for OOB being overwitten */
+		memset(buf, 'x', sizeof(buf));
+		buf[63] = '%';
+		send(cfd, buf, sizeof(buf), MSG_OOB);
+
+		memset(buf, 'x', sizeof(buf));
+		buf[63] = '#';
+		send(cfd, buf, sizeof(buf), MSG_OOB);
+
+		wait_for_signal(pipefd[0]);
+
+		/* Test 3: Test for SIOCATMARK */
+		memset(buf, 'x', sizeof(buf));
+		buf[63] = '@';
+		send(cfd, buf, sizeof(buf), MSG_OOB);
+
+		memset(buf, 'x', sizeof(buf));
+		buf[63] = '%';
+		send(cfd, buf, sizeof(buf), MSG_OOB);
+
+		memset(buf, 'x', sizeof(buf));
+		send(cfd, buf, sizeof(buf), 0);
+
+		wait_for_signal(pipefd[0]);
+
+		/* Test 4: Test for 1byte OOB msg */
+		memset(buf, 'x', sizeof(buf));
+		buf[0] = '@';
+		send(cfd, buf, 1, MSG_OOB);
+	}
+}
+
+int
+main(int argc, char **argv)
+{
+	int lfd, pfd;
+	struct sockaddr_un consumer_addr, paddr;
+	socklen_t len = sizeof(consumer_addr);
+	char buf[1024];
+	int on = 0;
+	char oob;
+	int flags;
+	int atmark;
+	char *tmp_file;
+
+	lfd = socket(AF_UNIX, SOCK_STREAM, 0);
+	memset(&consumer_addr, 0, sizeof(consumer_addr));
+	consumer_addr.sun_family = AF_UNIX;
+	sprintf(sock_name, "unix_oob_%d", getpid());
+	unlink(sock_name);
+	strcpy(consumer_addr.sun_path, sock_name);
+
+	if ((bind(lfd, (struct sockaddr *)&consumer_addr,
+		  sizeof(consumer_addr))) != 0) {
+		perror("socket bind failed");
+		exit(1);
+	}
+
+	pipe(pipefd);
+
+	listen(lfd, 1);
+
+	producer_id = fork();
+	if (producer_id == 0) {
+		producer(&consumer_addr);
+		exit(0);
+	}
+
+	set_sig_handler(SIGURG);
+	signal_producer(pipefd[1]);
+
+	pfd = accept(lfd, (struct sockaddr *) &paddr, &len);
+	fcntl(pfd, F_SETOWN, getpid());
+
+	signal_recvd = 0;
+	signal_producer(pipefd[1]);
+
+	/* Test 1:
+	 * veriyf that SIGURG is
+	 * delivered and 63 bytes are
+	 * read and oob is '@'
+	 */
+	wait_for_data(pfd, POLLIN | POLLPRI);
+	read_oob(pfd, &oob);
+	len = read_data(pfd, buf, 1024);
+	if (!signal_recvd || len != 63 || oob != '@') {
+		fprintf(stderr, "Test 1 failed sigurg %d len %d %c\n",
+			 signal_recvd, len, oob);
+			die(1);
+	}
+
+	signal_recvd = 0;
+	signal_producer(pipefd[1]);
+
+	/* Test 2:
+	 * Verify that the first OOB is over written by
+	 * the 2nd one and the first OOB is returned as
+	 * part of the read, and sigurg is received.
+	 */
+	wait_for_data(pfd, POLLIN | POLLPRI);
+	len = 0;
+	while (len < 70)
+		len = recv(pfd, buf, 1024, MSG_PEEK);
+	len = read_data(pfd, buf, 1024);
+	read_oob(pfd, &oob);
+	if (!signal_recvd || len != 127 || oob != '#') {
+		fprintf(stderr, "Test 2 failed, sigurg %d len %d OOB %c\n",
+		signal_recvd, len, oob);
+		die(1);
+	}
+
+	signal_recvd = 0;
+	signal_producer(pipefd[1]);
+
+	/* Test 3:
+	 * verify that 2nd oob over writes
+	 * the first one and read breaks at
+	 * oob boundary returning 127 bytes
+	 * and sigurg is received and atmark
+	 * is set.
+	 * oob is '%' and second read returns
+	 * 64 bytes.
+	 */
+	len = 0;
+	wait_for_data(pfd, POLLIN | POLLPRI);
+	while (len < 150)
+		len = recv(pfd, buf, 1024, MSG_PEEK);
+	len = read_data(pfd, buf, 1024);
+	atmark = is_sioctatmark(pfd);
+	read_oob(pfd, &oob);
+
+	if (!signal_recvd || len != 127 || oob != '%' || atmark != 1) {
+		fprintf(stderr, "Test 3 failed, sigurg %d len %d OOB %c ",
+		"atmark %d\n", signal_recvd, len, oob, atmark);
+		die(1);
+	}
+
+	signal_recvd = 0;
+
+	len = read_data(pfd, buf, 1024);
+	if (len != 64) {
+		fprintf(stderr, "Test 3.1 failed, sigurg %d len %d OOB %c\n",
+			signal_recvd, len, oob);
+		die(1);
+	}
+
+	signal_recvd = 0;
+	signal_producer(pipefd[1]);
+
+	/* Test 4:
+	 * verify that a single byte
+	 * oob message is delivered.
+	 * set non blocking mode and
+	 * check proper error is
+	 * returned and sigurg is
+	 * received and correct
+	 * oob is read.
+	 */
+
+	set_filemode(pfd, 0);
+
+	wait_for_data(pfd, POLLIN | POLLPRI);
+	len = read_data(pfd, buf, 1024);
+	if ((len == -1) && (errno == 11))
+		len = 0;
+
+	read_oob(pfd, &oob);
+
+	if (!signal_recvd || len != 0 || oob != '@') {
+		fprintf(stderr, "Test 4 failed, sigurg %d len %d OOB %c\n",
+			 signal_recvd, len, oob);
+		die(1);
+	}
+
+	set_filemode(pfd, 1);
+
+	/* Inline Testing */
+
+	on = 1;
+	if (setsockopt(pfd, SOL_SOCKET, SO_OOBINLINE, &on, sizeof(on))) {
+		perror("SO_OOBINLINE");
+		die(1);
+	}
+
+	signal_recvd = 0;
+	signal_producer(pipefd[1]);
+
+	/* Test 1 -- Inline:
+	 * Check that SIGURG is
+	 * delivered and 63 bytes are
+	 * read and oob is '@'
+	 */
+
+	wait_for_data(pfd, POLLIN | POLLPRI);
+	len = read_data(pfd, buf, 1024);
+
+	if (!signal_recvd || len != 63) {
+		fprintf(stderr, "Test 1 Inline failed, sigurg %d len %d\n",
+			signal_recvd, len);
+		die(1);
+	}
+
+	len = read_data(pfd, buf, 1024);
+
+	if (len != 1) {
+		fprintf(stderr,
+			 "Test 1.1 Inline failed, sigurg %d len %d oob %c\n",
+			 signal_recvd, len, oob);
+		die(1);
+	}
+
+	signal_recvd = 0;
+	signal_producer(pipefd[1]);
+
+	/* Test 2 -- Inline:
+	 * Verify that the first OOB is over written by
+	 * the 2nd one and read breaks correctly on
+	 * 2nd OOB boundary with the first OOB returned as
+	 * part of the read, and sigurg is delivered and
+	 * siocatmark returns true.
+	 * next read returns one byte, the oob byte
+	 * and siocatmark returns false.
+	 */
+	len = 0;
+	wait_for_data(pfd, POLLIN | POLLPRI);
+	while (len < 70)
+		len = recv(pfd, buf, 1024, MSG_PEEK);
+	len = read_data(pfd, buf, 1024);
+	atmark = is_sioctatmark(pfd);
+	if (len != 127 || atmark != 1 || !signal_recvd) {
+		fprintf(stderr, "Test 2 Inline failed, len %d atmark %d\n",
+			 len, atmark);
+		die(1);
+	}
+
+	len = read_data(pfd, buf, 1024);
+	atmark = is_sioctatmark(pfd);
+	if (len != 1 || buf[0] != '#' || atmark == 1) {
+		fprintf(stderr, "Test 2.1 Inline failed, len %d data %c atmark %d\n",
+			len, buf[0], atmark);
+		die(1);
+	}
+
+	signal_recvd = 0;
+	signal_producer(pipefd[1]);
+
+	/* Test 3 -- Inline:
+	 * verify that 2nd oob over writes
+	 * the first one and read breaks at
+	 * oob boundary returning 127 bytes
+	 * and sigurg is received and siocatmark
+	 * is true after the read.
+	 * subsequent read returns 65 bytes
+	 * because of oob which should be '%'.
+	 */
+	len = 0;
+	wait_for_data(pfd, POLLIN | POLLPRI);
+	while (len < 126)
+		len = recv(pfd, buf, 1024, MSG_PEEK);
+	len = read_data(pfd, buf, 1024);
+	atmark = is_sioctatmark(pfd);
+	if (!signal_recvd || len != 127 || !atmark) {
+		fprintf(stderr,
+			 "Test 3 Inline failed, sigurg %d len %d data %c\n",
+			 signal_recvd, len, buf[0]);
+		die(1);
+	}
+
+	len = read_data(pfd, buf, 1024);
+	atmark = is_sioctatmark(pfd);
+	if (len != 65 || buf[0] != '%' || atmark != 0) {
+		fprintf(stderr,
+			 "Test 3.1 Inline failed, len %d oob %c atmark %d\n",
+			 len, buf[0], atmark);
+		die(1);
+	}
+
+	signal_recvd = 0;
+	signal_producer(pipefd[1]);
+
+	/* Test 4 -- Inline:
+	 * verify that a single
+	 * byte oob message is delivered
+	 * and read returns one byte, the oob
+	 * byte and sigurg is received
+	 */
+	wait_for_data(pfd, POLLIN | POLLPRI);
+	len = read_data(pfd, buf, 1024);
+	if (!signal_recvd || len != 1 || buf[0] != '@') {
+		fprintf(stderr,
+			"Test 4 Inline failed, signal %d len %d data %c\n",
+		signal_recvd, len, buf[0]);
+		die(1);
+	}
+	die(0);
+}
diff --git a/tools/testing/selftests/net/config b/tools/testing/selftests/net/config
index 6f905b53904f..21b646d10b88 100644
--- a/tools/testing/selftests/net/config
+++ b/tools/testing/selftests/net/config
@@ -42,3 +42,4 @@ CONFIG_NET_CLS_FLOWER=m
 CONFIG_NET_ACT_TUNNEL_KEY=m
 CONFIG_NET_ACT_MIRRED=m
 CONFIG_BAREUDP=m
+CONFIG_IPV6_IOAM6_LWTUNNEL=y
diff --git a/tools/testing/selftests/net/fcnal-test.sh b/tools/testing/selftests/net/fcnal-test.sh
index a8ad92850e63..13350cd5c8ac 100755
--- a/tools/testing/selftests/net/fcnal-test.sh
+++ b/tools/testing/selftests/net/fcnal-test.sh
@@ -37,6 +37,9 @@
 #
 # server / client nomenclature relative to ns-A
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
 VERBOSE=0
 
 NSA_DEV=eth1
@@ -3879,6 +3882,32 @@ use_case_ping_lla_multi()
 	log_test_addr ${MCAST}%${NSC_DEV} $? 0 "Post cycle ${NSA} ${NSA_DEV2}, ping out ns-C"
 }
 
+# Perform IPv{4,6} SNAT on ns-A, and verify TCP connection is successfully
+# established with ns-B.
+use_case_snat_on_vrf()
+{
+	setup "yes"
+
+	local port="12345"
+
+	run_cmd iptables -t nat -A POSTROUTING -p tcp -m tcp --dport ${port} -j SNAT --to-source ${NSA_LO_IP} -o ${VRF}
+	run_cmd ip6tables -t nat -A POSTROUTING -p tcp -m tcp --dport ${port} -j SNAT --to-source ${NSA_LO_IP6} -o ${VRF}
+
+	run_cmd_nsb nettest -s -l ${NSB_IP} -p ${port} &
+	sleep 1
+	run_cmd nettest -d ${VRF} -r ${NSB_IP} -p ${port}
+	log_test $? 0 "IPv4 TCP connection over VRF with SNAT"
+
+	run_cmd_nsb nettest -6 -s -l ${NSB_IP6} -p ${port} &
+	sleep 1
+	run_cmd nettest -6 -d ${VRF} -r ${NSB_IP6} -p ${port}
+	log_test $? 0 "IPv6 TCP connection over VRF with SNAT"
+
+	# Cleanup
+	run_cmd iptables -t nat -D POSTROUTING -p tcp -m tcp --dport ${port} -j SNAT --to-source ${NSA_LO_IP} -o ${VRF}
+	run_cmd ip6tables -t nat -D POSTROUTING -p tcp -m tcp --dport ${port} -j SNAT --to-source ${NSA_LO_IP6} -o ${VRF}
+}
+
 use_cases()
 {
 	log_section "Use cases"
@@ -3886,6 +3915,8 @@ use_cases()
 	use_case_br
 	log_subsection "Ping LLA with multiple interfaces"
 	use_case_ping_lla_multi
+	log_subsection "SNAT on VRF"
+	use_case_snat_on_vrf
 }
 
 ################################################################################
@@ -3946,7 +3977,7 @@ fi
 which nettest >/dev/null
 if [ $? -ne 0 ]; then
 	echo "'nettest' command not found; skipping tests"
-	exit 0
+	exit $ksft_skip
 fi
 
 declare -i nfail=0
diff --git a/tools/testing/selftests/net/fib_rule_tests.sh b/tools/testing/selftests/net/fib_rule_tests.sh
index a93e6b690e06..43ea8407a82e 100755
--- a/tools/testing/selftests/net/fib_rule_tests.sh
+++ b/tools/testing/selftests/net/fib_rule_tests.sh
@@ -3,6 +3,9 @@
 
 # This test is for checking IPv4 and IPv6 FIB rules API
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
 ret=0
 
 PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no}
@@ -238,12 +241,12 @@ run_fibrule_tests()
 
 if [ "$(id -u)" -ne 0 ];then
 	echo "SKIP: Need root privileges"
-	exit 0
+	exit $ksft_skip
 fi
 
 if [ ! -x "$(command -v ip)" ]; then
 	echo "SKIP: Could not run test without ip tool"
-	exit 0
+	exit $ksft_skip
 fi
 
 # start clean
diff --git a/tools/testing/selftests/net/forwarding/devlink_lib.sh b/tools/testing/selftests/net/forwarding/devlink_lib.sh
index 13d3d4428a32..2c14a86adaaa 100644
--- a/tools/testing/selftests/net/forwarding/devlink_lib.sh
+++ b/tools/testing/selftests/net/forwarding/devlink_lib.sh
@@ -1,6 +1,9 @@
 #!/bin/bash
 # SPDX-License-Identifier: GPL-2.0
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
 ##############################################################################
 # Defines
 
@@ -9,11 +12,11 @@ if [[ ! -v DEVLINK_DEV ]]; then
 			     | jq -r '.port | keys[]' | cut -d/ -f-2)
 	if [ -z "$DEVLINK_DEV" ]; then
 		echo "SKIP: ${NETIFS[p1]} has no devlink device registered for it"
-		exit 1
+		exit $ksft_skip
 	fi
 	if [[ "$(echo $DEVLINK_DEV | grep -c pci)" -eq 0 ]]; then
 		echo "SKIP: devlink device's bus is not PCI"
-		exit 1
+		exit $ksft_skip
 	fi
 
 	DEVLINK_VIDDID=$(lspci -s $(echo $DEVLINK_DEV | cut -d"/" -f2) \
@@ -22,7 +25,7 @@ elif [[ ! -z "$DEVLINK_DEV" ]]; then
 	devlink dev show $DEVLINK_DEV &> /dev/null
 	if [ $? -ne 0 ]; then
 		echo "SKIP: devlink device \"$DEVLINK_DEV\" not found"
-		exit 1
+		exit $ksft_skip
 	fi
 fi
 
@@ -32,19 +35,19 @@ fi
 devlink help 2>&1 | grep resource &> /dev/null
 if [ $? -ne 0 ]; then
 	echo "SKIP: iproute2 too old, missing devlink resource support"
-	exit 1
+	exit $ksft_skip
 fi
 
 devlink help 2>&1 | grep trap &> /dev/null
 if [ $? -ne 0 ]; then
 	echo "SKIP: iproute2 too old, missing devlink trap support"
-	exit 1
+	exit $ksft_skip
 fi
 
 devlink dev help 2>&1 | grep info &> /dev/null
 if [ $? -ne 0 ]; then
 	echo "SKIP: iproute2 too old, missing devlink dev info support"
-	exit 1
+	exit $ksft_skip
 fi
 
 ##############################################################################
diff --git a/tools/testing/selftests/net/forwarding/lib.sh b/tools/testing/selftests/net/forwarding/lib.sh
index 42e28c983d41..e7fc5c35b569 100644
--- a/tools/testing/selftests/net/forwarding/lib.sh
+++ b/tools/testing/selftests/net/forwarding/lib.sh
@@ -4,6 +4,9 @@
 ##############################################################################
 # Defines
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
 # Can be overridden by the configuration file.
 PING=${PING:=ping}
 PING6=${PING6:=ping6}
@@ -38,7 +41,7 @@ check_tc_version()
 	tc -j &> /dev/null
 	if [[ $? -ne 0 ]]; then
 		echo "SKIP: iproute2 too old; tc is missing JSON support"
-		exit 1
+		exit $ksft_skip
 	fi
 }
 
@@ -51,7 +54,7 @@ check_tc_mpls_support()
 		matchall action pipe &> /dev/null
 	if [[ $? -ne 0 ]]; then
 		echo "SKIP: iproute2 too old; tc is missing MPLS support"
-		return 1
+		return $ksft_skip
 	fi
 	tc filter del dev $dev ingress protocol mpls_uc pref 1 handle 1 \
 		matchall
@@ -69,7 +72,7 @@ check_tc_mpls_lse_stats()
 
 	if [[ $? -ne 0 ]]; then
 		echo "SKIP: iproute2 too old; tc-flower is missing extended MPLS support"
-		return 1
+		return $ksft_skip
 	fi
 
 	tc -j filter show dev $dev ingress protocol mpls_uc | jq . &> /dev/null
@@ -79,7 +82,7 @@ check_tc_mpls_lse_stats()
 
 	if [[ $ret -ne 0 ]]; then
 		echo "SKIP: iproute2 too old; tc-flower produces invalid json output for extended MPLS filters"
-		return 1
+		return $ksft_skip
 	fi
 }
 
@@ -88,7 +91,7 @@ check_tc_shblock_support()
 	tc filter help 2>&1 | grep block &> /dev/null
 	if [[ $? -ne 0 ]]; then
 		echo "SKIP: iproute2 too old; tc is missing shared block support"
-		exit 1
+		exit $ksft_skip
 	fi
 }
 
@@ -97,7 +100,7 @@ check_tc_chain_support()
 	tc help 2>&1|grep chain &> /dev/null
 	if [[ $? -ne 0 ]]; then
 		echo "SKIP: iproute2 too old; tc is missing chain support"
-		exit 1
+		exit $ksft_skip
 	fi
 }
 
@@ -106,7 +109,7 @@ check_tc_action_hw_stats_support()
 	tc actions help 2>&1 | grep -q hw_stats
 	if [[ $? -ne 0 ]]; then
 		echo "SKIP: iproute2 too old; tc is missing action hw_stats support"
-		exit 1
+		exit $ksft_skip
 	fi
 }
 
@@ -115,13 +118,13 @@ check_ethtool_lanes_support()
 	ethtool --help 2>&1| grep lanes &> /dev/null
 	if [[ $? -ne 0 ]]; then
 		echo "SKIP: ethtool too old; it is missing lanes support"
-		exit 1
+		exit $ksft_skip
 	fi
 }
 
 if [[ "$(id -u)" -ne 0 ]]; then
 	echo "SKIP: need root privileges"
-	exit 0
+	exit $ksft_skip
 fi
 
 if [[ "$CHECK_TC" = "yes" ]]; then
@@ -134,7 +137,7 @@ require_command()
 
 	if [[ ! -x "$(command -v "$cmd")" ]]; then
 		echo "SKIP: $cmd not installed"
-		exit 1
+		exit $ksft_skip
 	fi
 }
 
@@ -143,7 +146,7 @@ require_command $MZ
 
 if [[ ! -v NUM_NETIFS ]]; then
 	echo "SKIP: importer does not define \"NUM_NETIFS\""
-	exit 1
+	exit $ksft_skip
 fi
 
 ##############################################################################
@@ -203,7 +206,7 @@ for ((i = 1; i <= NUM_NETIFS; ++i)); do
 	ip link show dev ${NETIFS[p$i]} &> /dev/null
 	if [[ $? -ne 0 ]]; then
 		echo "SKIP: could not find all required interfaces"
-		exit 1
+		exit $ksft_skip
 	fi
 done
 
diff --git a/tools/testing/selftests/net/forwarding/router_mpath_nh.sh b/tools/testing/selftests/net/forwarding/router_mpath_nh.sh
index 76efb1f8375e..a0d612e04990 100755
--- a/tools/testing/selftests/net/forwarding/router_mpath_nh.sh
+++ b/tools/testing/selftests/net/forwarding/router_mpath_nh.sh
@@ -411,7 +411,7 @@ ping_ipv6()
 ip nexthop ls >/dev/null 2>&1
 if [ $? -ne 0 ]; then
 	echo "Nexthop objects not supported; skipping tests"
-	exit 0
+	exit $ksft_skip
 fi
 
 trap cleanup EXIT
diff --git a/tools/testing/selftests/net/forwarding/router_mpath_nh_res.sh b/tools/testing/selftests/net/forwarding/router_mpath_nh_res.sh
index 4898dd4118f1..cb08ffe2356a 100755
--- a/tools/testing/selftests/net/forwarding/router_mpath_nh_res.sh
+++ b/tools/testing/selftests/net/forwarding/router_mpath_nh_res.sh
@@ -386,7 +386,7 @@ ping_ipv6()
 ip nexthop ls >/dev/null 2>&1
 if [ $? -ne 0 ]; then
 	echo "Nexthop objects not supported; skipping tests"
-	exit 0
+	exit $ksft_skip
 fi
 
 trap cleanup EXIT
diff --git a/tools/testing/selftests/net/gro.c b/tools/testing/selftests/net/gro.c
new file mode 100644
index 000000000000..cf37ce86b0fd
--- /dev/null
+++ b/tools/testing/selftests/net/gro.c
@@ -0,0 +1,1095 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * This testsuite provides conformance testing for GRO coalescing.
+ *
+ * Test cases:
+ * 1.data
+ *  Data packets of the same size and same header setup with correct
+ *  sequence numbers coalesce. The one exception being the last data
+ *  packet coalesced: it can be smaller than the rest and coalesced
+ *  as long as it is in the same flow.
+ * 2.ack
+ *  Pure ACK does not coalesce.
+ * 3.flags
+ *  Specific test cases: no packets with PSH, SYN, URG, RST set will
+ *  be coalesced.
+ * 4.tcp
+ *  Packets with incorrect checksum, non-consecutive seqno and
+ *  different TCP header options shouldn't coalesce. Nit: given that
+ *  some extension headers have paddings, such as timestamp, headers
+ *  that are padding differently would not be coalesced.
+ * 5.ip:
+ *  Packets with different (ECN, TTL, TOS) header, ip options or
+ *  ip fragments (ipv6) shouldn't coalesce.
+ * 6.large:
+ *  Packets larger than GRO_MAX_SIZE packets shouldn't coalesce.
+ *
+ * MSS is defined as 4096 - header because if it is too small
+ * (i.e. 1500 MTU - header), it will result in many packets,
+ * increasing the "large" test case's flakiness. This is because
+ * due to time sensitivity in the coalescing window, the receiver
+ * may not coalesce all of the packets.
+ *
+ * Note the timing issue applies to all of the test cases, so some
+ * flakiness is to be expected.
+ *
+ */
+
+#define _GNU_SOURCE
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <error.h>
+#include <getopt.h>
+#include <linux/filter.h>
+#include <linux/if_packet.h>
+#include <linux/ipv6.h>
+#include <net/ethernet.h>
+#include <net/if.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/ip6.h>
+#include <netinet/tcp.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdarg.h>
+#include <string.h>
+#include <unistd.h>
+
+#define DPORT 8000
+#define SPORT 1500
+#define PAYLOAD_LEN 100
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+#define NUM_PACKETS 4
+#define START_SEQ 100
+#define START_ACK 100
+#define SIP6 "fdaa::2"
+#define DIP6 "fdaa::1"
+#define SIP4 "192.168.1.200"
+#define DIP4 "192.168.1.100"
+#define ETH_P_NONE 0
+#define TOTAL_HDR_LEN (ETH_HLEN + sizeof(struct ipv6hdr) + sizeof(struct tcphdr))
+#define MSS (4096 - sizeof(struct tcphdr) - sizeof(struct ipv6hdr))
+#define MAX_PAYLOAD (IP_MAXPACKET - sizeof(struct tcphdr) - sizeof(struct ipv6hdr))
+#define NUM_LARGE_PKT (MAX_PAYLOAD / MSS)
+#define MAX_HDR_LEN (ETH_HLEN + sizeof(struct ipv6hdr) + sizeof(struct tcphdr))
+
+static int proto = -1;
+static uint8_t src_mac[ETH_ALEN], dst_mac[ETH_ALEN];
+static char *testname = "data";
+static char *ifname = "eth0";
+static char *smac = "aa:00:00:00:00:02";
+static char *dmac = "aa:00:00:00:00:01";
+static bool verbose;
+static bool tx_socket = true;
+static int tcp_offset = -1;
+static int total_hdr_len = -1;
+static int ethhdr_proto = -1;
+
+static void vlog(const char *fmt, ...)
+{
+	va_list args;
+
+	if (verbose) {
+		va_start(args, fmt);
+		vfprintf(stderr, fmt, args);
+		va_end(args);
+	}
+}
+
+static void setup_sock_filter(int fd)
+{
+	const int dport_off = tcp_offset + offsetof(struct tcphdr, dest);
+	const int ethproto_off = offsetof(struct ethhdr, h_proto);
+	int optlen = 0;
+	int ipproto_off;
+	int next_off;
+
+	if (proto == PF_INET)
+		next_off = offsetof(struct iphdr, protocol);
+	else
+		next_off = offsetof(struct ipv6hdr, nexthdr);
+	ipproto_off = ETH_HLEN + next_off;
+
+	if (strcmp(testname, "ip") == 0) {
+		if (proto == PF_INET)
+			optlen = sizeof(struct ip_timestamp);
+		else
+			optlen = sizeof(struct ip6_frag);
+	}
+
+	struct sock_filter filter[] = {
+			BPF_STMT(BPF_LD  + BPF_H   + BPF_ABS, ethproto_off),
+			BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, ntohs(ethhdr_proto), 0, 7),
+			BPF_STMT(BPF_LD  + BPF_B   + BPF_ABS, ipproto_off),
+			BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, IPPROTO_TCP, 0, 5),
+			BPF_STMT(BPF_LD  + BPF_H   + BPF_ABS, dport_off),
+			BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, DPORT, 2, 0),
+			BPF_STMT(BPF_LD  + BPF_H   + BPF_ABS, dport_off + optlen),
+			BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, DPORT, 0, 1),
+			BPF_STMT(BPF_RET + BPF_K, 0xFFFFFFFF),
+			BPF_STMT(BPF_RET + BPF_K, 0),
+	};
+
+	struct sock_fprog bpf = {
+		.len = ARRAY_SIZE(filter),
+		.filter = filter,
+	};
+
+	if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &bpf, sizeof(bpf)) < 0)
+		error(1, errno, "error setting filter");
+}
+
+static uint32_t checksum_nofold(void *data, size_t len, uint32_t sum)
+{
+	uint16_t *words = data;
+	int i;
+
+	for (i = 0; i < len / 2; i++)
+		sum += words[i];
+	if (len & 1)
+		sum += ((char *)data)[len - 1];
+	return sum;
+}
+
+static uint16_t checksum_fold(void *data, size_t len, uint32_t sum)
+{
+	sum = checksum_nofold(data, len, sum);
+	while (sum > 0xFFFF)
+		sum = (sum & 0xFFFF) + (sum >> 16);
+	return ~sum;
+}
+
+static uint16_t tcp_checksum(void *buf, int payload_len)
+{
+	struct pseudo_header6 {
+		struct in6_addr saddr;
+		struct in6_addr daddr;
+		uint16_t protocol;
+		uint16_t payload_len;
+	} ph6;
+	struct pseudo_header4 {
+		struct in_addr saddr;
+		struct in_addr daddr;
+		uint16_t protocol;
+		uint16_t payload_len;
+	} ph4;
+	uint32_t sum = 0;
+
+	if (proto == PF_INET6) {
+		if (inet_pton(AF_INET6, SIP6, &ph6.saddr) != 1)
+			error(1, errno, "inet_pton6 source ip pseudo");
+		if (inet_pton(AF_INET6, DIP6, &ph6.daddr) != 1)
+			error(1, errno, "inet_pton6 dest ip pseudo");
+		ph6.protocol = htons(IPPROTO_TCP);
+		ph6.payload_len = htons(sizeof(struct tcphdr) + payload_len);
+
+		sum = checksum_nofold(&ph6, sizeof(ph6), 0);
+	} else if (proto == PF_INET) {
+		if (inet_pton(AF_INET, SIP4, &ph4.saddr) != 1)
+			error(1, errno, "inet_pton source ip pseudo");
+		if (inet_pton(AF_INET, DIP4, &ph4.daddr) != 1)
+			error(1, errno, "inet_pton dest ip pseudo");
+		ph4.protocol = htons(IPPROTO_TCP);
+		ph4.payload_len = htons(sizeof(struct tcphdr) + payload_len);
+
+		sum = checksum_nofold(&ph4, sizeof(ph4), 0);
+	}
+
+	return checksum_fold(buf, sizeof(struct tcphdr) + payload_len, sum);
+}
+
+static void read_MAC(uint8_t *mac_addr, char *mac)
+{
+	if (sscanf(mac, "%hhx:%hhx:%hhx:%hhx:%hhx:%hhx",
+		   &mac_addr[0], &mac_addr[1], &mac_addr[2],
+		   &mac_addr[3], &mac_addr[4], &mac_addr[5]) != 6)
+		error(1, 0, "sscanf");
+}
+
+static void fill_datalinklayer(void *buf)
+{
+	struct ethhdr *eth = buf;
+
+	memcpy(eth->h_dest, dst_mac, ETH_ALEN);
+	memcpy(eth->h_source, src_mac, ETH_ALEN);
+	eth->h_proto = ethhdr_proto;
+}
+
+static void fill_networklayer(void *buf, int payload_len)
+{
+	struct ipv6hdr *ip6h = buf;
+	struct iphdr *iph = buf;
+
+	if (proto == PF_INET6) {
+		memset(ip6h, 0, sizeof(*ip6h));
+
+		ip6h->version = 6;
+		ip6h->payload_len = htons(sizeof(struct tcphdr) + payload_len);
+		ip6h->nexthdr = IPPROTO_TCP;
+		ip6h->hop_limit = 8;
+		if (inet_pton(AF_INET6, SIP6, &ip6h->saddr) != 1)
+			error(1, errno, "inet_pton source ip6");
+		if (inet_pton(AF_INET6, DIP6, &ip6h->daddr) != 1)
+			error(1, errno, "inet_pton dest ip6");
+	} else if (proto == PF_INET) {
+		memset(iph, 0, sizeof(*iph));
+
+		iph->version = 4;
+		iph->ihl = 5;
+		iph->ttl = 8;
+		iph->protocol	= IPPROTO_TCP;
+		iph->tot_len = htons(sizeof(struct tcphdr) +
+				payload_len + sizeof(struct iphdr));
+		iph->frag_off = htons(0x4000); /* DF = 1, MF = 0 */
+		if (inet_pton(AF_INET, SIP4, &iph->saddr) != 1)
+			error(1, errno, "inet_pton source ip");
+		if (inet_pton(AF_INET, DIP4, &iph->daddr) != 1)
+			error(1, errno, "inet_pton dest ip");
+		iph->check = checksum_fold(buf, sizeof(struct iphdr), 0);
+	}
+}
+
+static void fill_transportlayer(void *buf, int seq_offset, int ack_offset,
+				int payload_len, int fin)
+{
+	struct tcphdr *tcph = buf;
+
+	memset(tcph, 0, sizeof(*tcph));
+
+	tcph->source = htons(SPORT);
+	tcph->dest = htons(DPORT);
+	tcph->seq = ntohl(START_SEQ + seq_offset);
+	tcph->ack_seq = ntohl(START_ACK + ack_offset);
+	tcph->ack = 1;
+	tcph->fin = fin;
+	tcph->doff = 5;
+	tcph->window = htons(TCP_MAXWIN);
+	tcph->urg_ptr = 0;
+	tcph->check = tcp_checksum(tcph, payload_len);
+}
+
+static void write_packet(int fd, char *buf, int len, struct sockaddr_ll *daddr)
+{
+	int ret = -1;
+
+	ret = sendto(fd, buf, len, 0, (struct sockaddr *)daddr, sizeof(*daddr));
+	if (ret == -1)
+		error(1, errno, "sendto failure");
+	if (ret != len)
+		error(1, errno, "sendto wrong length");
+}
+
+static void create_packet(void *buf, int seq_offset, int ack_offset,
+			  int payload_len, int fin)
+{
+	memset(buf, 0, total_hdr_len);
+	memset(buf + total_hdr_len, 'a', payload_len);
+	fill_transportlayer(buf + tcp_offset, seq_offset, ack_offset,
+			    payload_len, fin);
+	fill_networklayer(buf + ETH_HLEN, payload_len);
+	fill_datalinklayer(buf);
+}
+
+/* send one extra flag, not first and not last pkt */
+static void send_flags(int fd, struct sockaddr_ll *daddr, int psh, int syn,
+		       int rst, int urg)
+{
+	static char flag_buf[MAX_HDR_LEN + PAYLOAD_LEN];
+	static char buf[MAX_HDR_LEN + PAYLOAD_LEN];
+	int payload_len, pkt_size, flag, i;
+	struct tcphdr *tcph;
+
+	payload_len = PAYLOAD_LEN * psh;
+	pkt_size = total_hdr_len + payload_len;
+	flag = NUM_PACKETS / 2;
+
+	create_packet(flag_buf, flag * payload_len, 0, payload_len, 0);
+
+	tcph = (struct tcphdr *)(flag_buf + tcp_offset);
+	tcph->psh = psh;
+	tcph->syn = syn;
+	tcph->rst = rst;
+	tcph->urg = urg;
+	tcph->check = 0;
+	tcph->check = tcp_checksum(tcph, payload_len);
+
+	for (i = 0; i < NUM_PACKETS + 1; i++) {
+		if (i == flag) {
+			write_packet(fd, flag_buf, pkt_size, daddr);
+			continue;
+		}
+		create_packet(buf, i * PAYLOAD_LEN, 0, PAYLOAD_LEN, 0);
+		write_packet(fd, buf, total_hdr_len + PAYLOAD_LEN, daddr);
+	}
+}
+
+/* Test for data of same length, smaller than previous
+ * and of different lengths
+ */
+static void send_data_pkts(int fd, struct sockaddr_ll *daddr,
+			   int payload_len1, int payload_len2)
+{
+	static char buf[ETH_HLEN + IP_MAXPACKET];
+
+	create_packet(buf, 0, 0, payload_len1, 0);
+	write_packet(fd, buf, total_hdr_len + payload_len1, daddr);
+	create_packet(buf, payload_len1, 0, payload_len2, 0);
+	write_packet(fd, buf, total_hdr_len + payload_len2, daddr);
+}
+
+/* If incoming segments make tracked segment length exceed
+ * legal IP datagram length, do not coalesce
+ */
+static void send_large(int fd, struct sockaddr_ll *daddr, int remainder)
+{
+	static char pkts[NUM_LARGE_PKT][TOTAL_HDR_LEN + MSS];
+	static char last[TOTAL_HDR_LEN + MSS];
+	static char new_seg[TOTAL_HDR_LEN + MSS];
+	int i;
+
+	for (i = 0; i < NUM_LARGE_PKT; i++)
+		create_packet(pkts[i], i * MSS, 0, MSS, 0);
+	create_packet(last, NUM_LARGE_PKT * MSS, 0, remainder, 0);
+	create_packet(new_seg, (NUM_LARGE_PKT + 1) * MSS, 0, remainder, 0);
+
+	for (i = 0; i < NUM_LARGE_PKT; i++)
+		write_packet(fd, pkts[i], total_hdr_len + MSS, daddr);
+	write_packet(fd, last, total_hdr_len + remainder, daddr);
+	write_packet(fd, new_seg, total_hdr_len + remainder, daddr);
+}
+
+/* Pure acks and dup acks don't coalesce */
+static void send_ack(int fd, struct sockaddr_ll *daddr)
+{
+	static char buf[MAX_HDR_LEN];
+
+	create_packet(buf, 0, 0, 0, 0);
+	write_packet(fd, buf, total_hdr_len, daddr);
+	write_packet(fd, buf, total_hdr_len, daddr);
+	create_packet(buf, 0, 1, 0, 0);
+	write_packet(fd, buf, total_hdr_len, daddr);
+}
+
+static void recompute_packet(char *buf, char *no_ext, int extlen)
+{
+	struct tcphdr *tcphdr = (struct tcphdr *)(buf + tcp_offset);
+	struct ipv6hdr *ip6h = (struct ipv6hdr *)(buf + ETH_HLEN);
+	struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN);
+
+	memmove(buf, no_ext, total_hdr_len);
+	memmove(buf + total_hdr_len + extlen,
+		no_ext + total_hdr_len, PAYLOAD_LEN);
+
+	tcphdr->doff = tcphdr->doff + (extlen / 4);
+	tcphdr->check = 0;
+	tcphdr->check = tcp_checksum(tcphdr, PAYLOAD_LEN + extlen);
+	if (proto == PF_INET) {
+		iph->tot_len = htons(ntohs(iph->tot_len) + extlen);
+		iph->check = 0;
+		iph->check = checksum_fold(iph, sizeof(struct iphdr), 0);
+	} else {
+		ip6h->payload_len = htons(ntohs(ip6h->payload_len) + extlen);
+	}
+}
+
+static void tcp_write_options(char *buf, int kind, int ts)
+{
+	struct tcp_option_ts {
+		uint8_t kind;
+		uint8_t len;
+		uint32_t tsval;
+		uint32_t tsecr;
+	} *opt_ts = (void *)buf;
+	struct tcp_option_window {
+		uint8_t kind;
+		uint8_t len;
+		uint8_t shift;
+	} *opt_window = (void *)buf;
+
+	switch (kind) {
+	case TCPOPT_NOP:
+		buf[0] = TCPOPT_NOP;
+		break;
+	case TCPOPT_WINDOW:
+		memset(opt_window, 0, sizeof(struct tcp_option_window));
+		opt_window->kind = TCPOPT_WINDOW;
+		opt_window->len = TCPOLEN_WINDOW;
+		opt_window->shift = 0;
+		break;
+	case TCPOPT_TIMESTAMP:
+		memset(opt_ts, 0, sizeof(struct tcp_option_ts));
+		opt_ts->kind = TCPOPT_TIMESTAMP;
+		opt_ts->len = TCPOLEN_TIMESTAMP;
+		opt_ts->tsval = ts;
+		opt_ts->tsecr = 0;
+		break;
+	default:
+		error(1, 0, "unimplemented TCP option");
+		break;
+	}
+}
+
+/* TCP with options is always a permutation of {TS, NOP, NOP}.
+ * Implement different orders to verify coalescing stops.
+ */
+static void add_standard_tcp_options(char *buf, char *no_ext, int ts, int order)
+{
+	switch (order) {
+	case 0:
+		tcp_write_options(buf + total_hdr_len, TCPOPT_NOP, 0);
+		tcp_write_options(buf + total_hdr_len + 1, TCPOPT_NOP, 0);
+		tcp_write_options(buf + total_hdr_len + 2 /* two NOP opts */,
+				  TCPOPT_TIMESTAMP, ts);
+		break;
+	case 1:
+		tcp_write_options(buf + total_hdr_len, TCPOPT_NOP, 0);
+		tcp_write_options(buf + total_hdr_len + 1,
+				  TCPOPT_TIMESTAMP, ts);
+		tcp_write_options(buf + total_hdr_len + 1 + TCPOLEN_TIMESTAMP,
+				  TCPOPT_NOP, 0);
+		break;
+	case 2:
+		tcp_write_options(buf + total_hdr_len, TCPOPT_TIMESTAMP, ts);
+		tcp_write_options(buf + total_hdr_len + TCPOLEN_TIMESTAMP + 1,
+				  TCPOPT_NOP, 0);
+		tcp_write_options(buf + total_hdr_len + TCPOLEN_TIMESTAMP + 2,
+				  TCPOPT_NOP, 0);
+		break;
+	default:
+		error(1, 0, "unknown order");
+		break;
+	}
+	recompute_packet(buf, no_ext, TCPOLEN_TSTAMP_APPA);
+}
+
+/* Packets with invalid checksum don't coalesce. */
+static void send_changed_checksum(int fd, struct sockaddr_ll *daddr)
+{
+	static char buf[MAX_HDR_LEN + PAYLOAD_LEN];
+	struct tcphdr *tcph = (struct tcphdr *)(buf + tcp_offset);
+	int pkt_size = total_hdr_len + PAYLOAD_LEN;
+
+	create_packet(buf, 0, 0, PAYLOAD_LEN, 0);
+	write_packet(fd, buf, pkt_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0);
+	tcph->check = tcph->check - 1;
+	write_packet(fd, buf, pkt_size, daddr);
+}
+
+ /* Packets with non-consecutive sequence number don't coalesce.*/
+static void send_changed_seq(int fd, struct sockaddr_ll *daddr)
+{
+	static char buf[MAX_HDR_LEN + PAYLOAD_LEN];
+	struct tcphdr *tcph = (struct tcphdr *)(buf + tcp_offset);
+	int pkt_size = total_hdr_len + PAYLOAD_LEN;
+
+	create_packet(buf, 0, 0, PAYLOAD_LEN, 0);
+	write_packet(fd, buf, pkt_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0);
+	tcph->seq = ntohl(htonl(tcph->seq) + 1);
+	tcph->check = 0;
+	tcph->check = tcp_checksum(tcph, PAYLOAD_LEN);
+	write_packet(fd, buf, pkt_size, daddr);
+}
+
+ /* Packet with different timestamp option or different timestamps
+  * don't coalesce.
+  */
+static void send_changed_ts(int fd, struct sockaddr_ll *daddr)
+{
+	static char buf[MAX_HDR_LEN + PAYLOAD_LEN];
+	static char extpkt[sizeof(buf) + TCPOLEN_TSTAMP_APPA];
+	int pkt_size = total_hdr_len + PAYLOAD_LEN + TCPOLEN_TSTAMP_APPA;
+
+	create_packet(buf, 0, 0, PAYLOAD_LEN, 0);
+	add_standard_tcp_options(extpkt, buf, 0, 0);
+	write_packet(fd, extpkt, pkt_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0);
+	add_standard_tcp_options(extpkt, buf, 0, 0);
+	write_packet(fd, extpkt, pkt_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN * 2, 0, PAYLOAD_LEN, 0);
+	add_standard_tcp_options(extpkt, buf, 100, 0);
+	write_packet(fd, extpkt, pkt_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN * 3, 0, PAYLOAD_LEN, 0);
+	add_standard_tcp_options(extpkt, buf, 100, 1);
+	write_packet(fd, extpkt, pkt_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN * 4, 0, PAYLOAD_LEN, 0);
+	add_standard_tcp_options(extpkt, buf, 100, 2);
+	write_packet(fd, extpkt, pkt_size, daddr);
+}
+
+/* Packet with different tcp options don't coalesce. */
+static void send_diff_opt(int fd, struct sockaddr_ll *daddr)
+{
+	static char buf[MAX_HDR_LEN + PAYLOAD_LEN];
+	static char extpkt1[sizeof(buf) + TCPOLEN_TSTAMP_APPA];
+	static char extpkt2[sizeof(buf) + TCPOLEN_MAXSEG];
+	int extpkt1_size = total_hdr_len + PAYLOAD_LEN + TCPOLEN_TSTAMP_APPA;
+	int extpkt2_size = total_hdr_len + PAYLOAD_LEN + TCPOLEN_MAXSEG;
+
+	create_packet(buf, 0, 0, PAYLOAD_LEN, 0);
+	add_standard_tcp_options(extpkt1, buf, 0, 0);
+	write_packet(fd, extpkt1, extpkt1_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0);
+	add_standard_tcp_options(extpkt1, buf, 0, 0);
+	write_packet(fd, extpkt1, extpkt1_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN * 2, 0, PAYLOAD_LEN, 0);
+	tcp_write_options(extpkt2 + MAX_HDR_LEN, TCPOPT_NOP, 0);
+	tcp_write_options(extpkt2 + MAX_HDR_LEN + 1, TCPOPT_WINDOW, 0);
+	recompute_packet(extpkt2, buf, TCPOLEN_WINDOW + 1);
+	write_packet(fd, extpkt2, extpkt2_size, daddr);
+}
+
+static void add_ipv4_ts_option(void *buf, void *optpkt)
+{
+	struct ip_timestamp *ts = (struct ip_timestamp *)(optpkt + tcp_offset);
+	int optlen = sizeof(struct ip_timestamp);
+	struct iphdr *iph;
+
+	if (optlen % 4)
+		error(1, 0, "ipv4 timestamp length is not a multiple of 4B");
+
+	ts->ipt_code = IPOPT_TS;
+	ts->ipt_len = optlen;
+	ts->ipt_ptr = 5;
+	ts->ipt_flg = IPOPT_TS_TSONLY;
+
+	memcpy(optpkt, buf, tcp_offset);
+	memcpy(optpkt + tcp_offset + optlen, buf + tcp_offset,
+	       sizeof(struct tcphdr) + PAYLOAD_LEN);
+
+	iph = (struct iphdr *)(optpkt + ETH_HLEN);
+	iph->ihl = 5 + (optlen / 4);
+	iph->tot_len = htons(ntohs(iph->tot_len) + optlen);
+	iph->check = 0;
+	iph->check = checksum_fold(iph, sizeof(struct iphdr) + optlen, 0);
+}
+
+/* IPv4 options shouldn't coalesce */
+static void send_ip_options(int fd, struct sockaddr_ll *daddr)
+{
+	static char buf[MAX_HDR_LEN + PAYLOAD_LEN];
+	static char optpkt[sizeof(buf) + sizeof(struct ip_timestamp)];
+	int optlen = sizeof(struct ip_timestamp);
+	int pkt_size = total_hdr_len + PAYLOAD_LEN + optlen;
+
+	create_packet(buf, 0, 0, PAYLOAD_LEN, 0);
+	write_packet(fd, buf, total_hdr_len + PAYLOAD_LEN, daddr);
+
+	create_packet(buf, PAYLOAD_LEN * 1, 0, PAYLOAD_LEN, 0);
+	add_ipv4_ts_option(buf, optpkt);
+	write_packet(fd, optpkt, pkt_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN * 2, 0, PAYLOAD_LEN, 0);
+	write_packet(fd, buf, total_hdr_len + PAYLOAD_LEN, daddr);
+}
+
+/*  IPv4 fragments shouldn't coalesce */
+static void send_fragment4(int fd, struct sockaddr_ll *daddr)
+{
+	static char buf[IP_MAXPACKET];
+	struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN);
+	int pkt_size = total_hdr_len + PAYLOAD_LEN;
+
+	create_packet(buf, 0, 0, PAYLOAD_LEN, 0);
+	write_packet(fd, buf, pkt_size, daddr);
+
+	/* Once fragmented, packet would retain the total_len.
+	 * Tcp header is prepared as if rest of data is in follow-up frags,
+	 * but follow up frags aren't actually sent.
+	 */
+	memset(buf + total_hdr_len, 'a', PAYLOAD_LEN * 2);
+	fill_transportlayer(buf + tcp_offset, PAYLOAD_LEN, 0, PAYLOAD_LEN * 2, 0);
+	fill_networklayer(buf + ETH_HLEN, PAYLOAD_LEN);
+	fill_datalinklayer(buf);
+
+	iph->frag_off = htons(0x6000); // DF = 1, MF = 1
+	iph->check = 0;
+	iph->check = checksum_fold(iph, sizeof(struct iphdr), 0);
+	write_packet(fd, buf, pkt_size, daddr);
+}
+
+/* IPv4 packets with different ttl don't coalesce.*/
+static void send_changed_ttl(int fd, struct sockaddr_ll *daddr)
+{
+	int pkt_size = total_hdr_len + PAYLOAD_LEN;
+	static char buf[MAX_HDR_LEN + PAYLOAD_LEN];
+	struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN);
+
+	create_packet(buf, 0, 0, PAYLOAD_LEN, 0);
+	write_packet(fd, buf, pkt_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0);
+	iph->ttl = 7;
+	iph->check = 0;
+	iph->check = checksum_fold(iph, sizeof(struct iphdr), 0);
+	write_packet(fd, buf, pkt_size, daddr);
+}
+
+/* Packets with different tos don't coalesce.*/
+static void send_changed_tos(int fd, struct sockaddr_ll *daddr)
+{
+	int pkt_size = total_hdr_len + PAYLOAD_LEN;
+	static char buf[MAX_HDR_LEN + PAYLOAD_LEN];
+	struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN);
+	struct ipv6hdr *ip6h = (struct ipv6hdr *)(buf + ETH_HLEN);
+
+	create_packet(buf, 0, 0, PAYLOAD_LEN, 0);
+	write_packet(fd, buf, pkt_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0);
+	if (proto == PF_INET) {
+		iph->tos = 1;
+		iph->check = 0;
+		iph->check = checksum_fold(iph, sizeof(struct iphdr), 0);
+	} else if (proto == PF_INET6) {
+		ip6h->priority = 0xf;
+	}
+	write_packet(fd, buf, pkt_size, daddr);
+}
+
+/* Packets with different ECN don't coalesce.*/
+static void send_changed_ECN(int fd, struct sockaddr_ll *daddr)
+{
+	int pkt_size = total_hdr_len + PAYLOAD_LEN;
+	static char buf[MAX_HDR_LEN + PAYLOAD_LEN];
+	struct iphdr *iph = (struct iphdr *)(buf + ETH_HLEN);
+
+	create_packet(buf, 0, 0, PAYLOAD_LEN, 0);
+	write_packet(fd, buf, pkt_size, daddr);
+
+	create_packet(buf, PAYLOAD_LEN, 0, PAYLOAD_LEN, 0);
+	if (proto == PF_INET) {
+		buf[ETH_HLEN + 1] ^= 0x2; // ECN set to 10
+		iph->check = 0;
+		iph->check = checksum_fold(iph, sizeof(struct iphdr), 0);
+	} else {
+		buf[ETH_HLEN + 1] ^= 0x20; // ECN set to 10
+	}
+	write_packet(fd, buf, pkt_size, daddr);
+}
+
+/* IPv6 fragments and packets with extensions don't coalesce.*/
+static void send_fragment6(int fd, struct sockaddr_ll *daddr)
+{
+	static char buf[MAX_HDR_LEN + PAYLOAD_LEN];
+	static char extpkt[MAX_HDR_LEN + PAYLOAD_LEN +
+			   sizeof(struct ip6_frag)];
+	struct ipv6hdr *ip6h = (struct ipv6hdr *)(buf + ETH_HLEN);
+	struct ip6_frag *frag = (void *)(extpkt + tcp_offset);
+	int extlen = sizeof(struct ip6_frag);
+	int bufpkt_len = total_hdr_len + PAYLOAD_LEN;
+	int extpkt_len = bufpkt_len + extlen;
+	int i;
+
+	for (i = 0; i < 2; i++) {
+		create_packet(buf, PAYLOAD_LEN * i, 0, PAYLOAD_LEN, 0);
+		write_packet(fd, buf, bufpkt_len, daddr);
+	}
+
+	create_packet(buf, PAYLOAD_LEN * 2, 0, PAYLOAD_LEN, 0);
+	memset(extpkt, 0, extpkt_len);
+
+	ip6h->nexthdr = IPPROTO_FRAGMENT;
+	ip6h->payload_len = htons(ntohs(ip6h->payload_len) + extlen);
+	frag->ip6f_nxt = IPPROTO_TCP;
+
+	memcpy(extpkt, buf, tcp_offset);
+	memcpy(extpkt + tcp_offset + extlen, buf + tcp_offset,
+	       sizeof(struct tcphdr) + PAYLOAD_LEN);
+	write_packet(fd, extpkt, extpkt_len, daddr);
+
+	create_packet(buf, PAYLOAD_LEN * 3, 0, PAYLOAD_LEN, 0);
+	write_packet(fd, buf, bufpkt_len, daddr);
+}
+
+static void bind_packetsocket(int fd)
+{
+	struct sockaddr_ll daddr = {};
+
+	daddr.sll_family = AF_PACKET;
+	daddr.sll_protocol = ethhdr_proto;
+	daddr.sll_ifindex = if_nametoindex(ifname);
+	if (daddr.sll_ifindex == 0)
+		error(1, errno, "if_nametoindex");
+
+	if (bind(fd, (void *)&daddr, sizeof(daddr)) < 0)
+		error(1, errno, "could not bind socket");
+}
+
+static void set_timeout(int fd)
+{
+	struct timeval timeout;
+
+	timeout.tv_sec = 120;
+	timeout.tv_usec = 0;
+	if (setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, (char *)&timeout,
+		       sizeof(timeout)) < 0)
+		error(1, errno, "cannot set timeout, setsockopt failed");
+}
+
+static void check_recv_pkts(int fd, int *correct_payload,
+			    int correct_num_pkts)
+{
+	static char buffer[IP_MAXPACKET + ETH_HLEN + 1];
+	struct iphdr *iph = (struct iphdr *)(buffer + ETH_HLEN);
+	struct ipv6hdr *ip6h = (struct ipv6hdr *)(buffer + ETH_HLEN);
+	struct tcphdr *tcph;
+	bool bad_packet = false;
+	int tcp_ext_len = 0;
+	int ip_ext_len = 0;
+	int pkt_size = -1;
+	int data_len = 0;
+	int num_pkt = 0;
+	int i;
+
+	vlog("Expected {");
+	for (i = 0; i < correct_num_pkts; i++)
+		vlog("%d ", correct_payload[i]);
+	vlog("}, Total %d packets\nReceived {", correct_num_pkts);
+
+	while (1) {
+		pkt_size = recv(fd, buffer, IP_MAXPACKET + ETH_HLEN + 1, 0);
+		if (pkt_size < 0)
+			error(1, errno, "could not receive");
+
+		if (iph->version == 4)
+			ip_ext_len = (iph->ihl - 5) * 4;
+		else if (ip6h->version == 6 && ip6h->nexthdr != IPPROTO_TCP)
+			ip_ext_len = sizeof(struct ip6_frag);
+
+		tcph = (struct tcphdr *)(buffer + tcp_offset + ip_ext_len);
+
+		if (tcph->fin)
+			break;
+
+		tcp_ext_len = (tcph->doff - 5) * 4;
+		data_len = pkt_size - total_hdr_len - tcp_ext_len - ip_ext_len;
+		/* Min ethernet frame payload is 46(ETH_ZLEN - ETH_HLEN) by RFC 802.3.
+		 * Ipv4/tcp packets without at least 6 bytes of data will be padded.
+		 * Packet sockets are protocol agnostic, and will not trim the padding.
+		 */
+		if (pkt_size == ETH_ZLEN && iph->version == 4) {
+			data_len = ntohs(iph->tot_len)
+				- sizeof(struct tcphdr) - sizeof(struct iphdr);
+		}
+		vlog("%d ", data_len);
+		if (data_len != correct_payload[num_pkt]) {
+			vlog("[!=%d]", correct_payload[num_pkt]);
+			bad_packet = true;
+		}
+		num_pkt++;
+	}
+	vlog("}, Total %d packets.\n", num_pkt);
+	if (num_pkt != correct_num_pkts)
+		error(1, 0, "incorrect number of packets");
+	if (bad_packet)
+		error(1, 0, "incorrect packet geometry");
+
+	printf("Test succeeded\n\n");
+}
+
+static void gro_sender(void)
+{
+	static char fin_pkt[MAX_HDR_LEN];
+	struct sockaddr_ll daddr = {};
+	int txfd = -1;
+
+	txfd = socket(PF_PACKET, SOCK_RAW, IPPROTO_RAW);
+	if (txfd < 0)
+		error(1, errno, "socket creation");
+
+	memset(&daddr, 0, sizeof(daddr));
+	daddr.sll_ifindex = if_nametoindex(ifname);
+	if (daddr.sll_ifindex == 0)
+		error(1, errno, "if_nametoindex");
+	daddr.sll_family = AF_PACKET;
+	memcpy(daddr.sll_addr, dst_mac, ETH_ALEN);
+	daddr.sll_halen = ETH_ALEN;
+	create_packet(fin_pkt, PAYLOAD_LEN * 2, 0, 0, 1);
+
+	if (strcmp(testname, "data") == 0) {
+		send_data_pkts(txfd, &daddr, PAYLOAD_LEN, PAYLOAD_LEN);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+		send_data_pkts(txfd, &daddr, PAYLOAD_LEN, PAYLOAD_LEN / 2);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+		send_data_pkts(txfd, &daddr, PAYLOAD_LEN / 2, PAYLOAD_LEN);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+	} else if (strcmp(testname, "ack") == 0) {
+		send_ack(txfd, &daddr);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+	} else if (strcmp(testname, "flags") == 0) {
+		send_flags(txfd, &daddr, 1, 0, 0, 0);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+		send_flags(txfd, &daddr, 0, 1, 0, 0);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+		send_flags(txfd, &daddr, 0, 0, 1, 0);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+		send_flags(txfd, &daddr, 0, 0, 0, 1);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+	} else if (strcmp(testname, "tcp") == 0) {
+		send_changed_checksum(txfd, &daddr);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+		send_changed_seq(txfd, &daddr);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+		send_changed_ts(txfd, &daddr);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+		send_diff_opt(txfd, &daddr);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+	} else if (strcmp(testname, "ip") == 0) {
+		send_changed_ECN(txfd, &daddr);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+		send_changed_tos(txfd, &daddr);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+		if (proto == PF_INET) {
+			/* Modified packets may be received out of order.
+			 * Sleep function added to enforce test boundaries
+			 * so that fin pkts are not received prior to other pkts.
+			 */
+			sleep(1);
+			send_changed_ttl(txfd, &daddr);
+			write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+			sleep(1);
+			send_ip_options(txfd, &daddr);
+			sleep(1);
+			write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+			sleep(1);
+			send_fragment4(txfd, &daddr);
+			sleep(1);
+			write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+		} else if (proto == PF_INET6) {
+			send_fragment6(txfd, &daddr);
+			write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+		}
+	} else if (strcmp(testname, "large") == 0) {
+		/* 20 is the difference between min iphdr size
+		 * and min ipv6hdr size. Like MAX_HDR_SIZE,
+		 * MAX_PAYLOAD is defined with the larger header of the two.
+		 */
+		int offset = proto == PF_INET ? 20 : 0;
+		int remainder = (MAX_PAYLOAD + offset) % MSS;
+
+		send_large(txfd, &daddr, remainder);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+
+		send_large(txfd, &daddr, remainder + 1);
+		write_packet(txfd, fin_pkt, total_hdr_len, &daddr);
+	} else {
+		error(1, 0, "Unknown testcase");
+	}
+
+	if (close(txfd))
+		error(1, errno, "socket close");
+}
+
+static void gro_receiver(void)
+{
+	static int correct_payload[NUM_PACKETS];
+	int rxfd = -1;
+
+	rxfd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_NONE));
+	if (rxfd < 0)
+		error(1, 0, "socket creation");
+	setup_sock_filter(rxfd);
+	set_timeout(rxfd);
+	bind_packetsocket(rxfd);
+
+	memset(correct_payload, 0, sizeof(correct_payload));
+
+	if (strcmp(testname, "data") == 0) {
+		printf("pure data packet of same size: ");
+		correct_payload[0] = PAYLOAD_LEN * 2;
+		check_recv_pkts(rxfd, correct_payload, 1);
+
+		printf("large data packets followed by a smaller one: ");
+		correct_payload[0] = PAYLOAD_LEN * 1.5;
+		check_recv_pkts(rxfd, correct_payload, 1);
+
+		printf("small data packets followed by a larger one: ");
+		correct_payload[0] = PAYLOAD_LEN / 2;
+		correct_payload[1] = PAYLOAD_LEN;
+		check_recv_pkts(rxfd, correct_payload, 2);
+	} else if (strcmp(testname, "ack") == 0) {
+		printf("duplicate ack and pure ack: ");
+		check_recv_pkts(rxfd, correct_payload, 3);
+	} else if (strcmp(testname, "flags") == 0) {
+		correct_payload[0] = PAYLOAD_LEN * 3;
+		correct_payload[1] = PAYLOAD_LEN * 2;
+
+		printf("psh flag ends coalescing: ");
+		check_recv_pkts(rxfd, correct_payload, 2);
+
+		correct_payload[0] = PAYLOAD_LEN * 2;
+		correct_payload[1] = 0;
+		correct_payload[2] = PAYLOAD_LEN * 2;
+		printf("syn flag ends coalescing: ");
+		check_recv_pkts(rxfd, correct_payload, 3);
+
+		printf("rst flag ends coalescing: ");
+		check_recv_pkts(rxfd, correct_payload, 3);
+
+		printf("urg flag ends coalescing: ");
+		check_recv_pkts(rxfd, correct_payload, 3);
+	} else if (strcmp(testname, "tcp") == 0) {
+		correct_payload[0] = PAYLOAD_LEN;
+		correct_payload[1] = PAYLOAD_LEN;
+		correct_payload[2] = PAYLOAD_LEN;
+		correct_payload[3] = PAYLOAD_LEN;
+
+		printf("changed checksum does not coalesce: ");
+		check_recv_pkts(rxfd, correct_payload, 2);
+
+		printf("Wrong Seq number doesn't coalesce: ");
+		check_recv_pkts(rxfd, correct_payload, 2);
+
+		printf("Different timestamp doesn't coalesce: ");
+		correct_payload[0] = PAYLOAD_LEN * 2;
+		check_recv_pkts(rxfd, correct_payload, 4);
+
+		printf("Different options doesn't coalesce: ");
+		correct_payload[0] = PAYLOAD_LEN * 2;
+		check_recv_pkts(rxfd, correct_payload, 2);
+	} else if (strcmp(testname, "ip") == 0) {
+		correct_payload[0] = PAYLOAD_LEN;
+		correct_payload[1] = PAYLOAD_LEN;
+
+		printf("different ECN doesn't coalesce: ");
+		check_recv_pkts(rxfd, correct_payload, 2);
+
+		printf("different tos doesn't coalesce: ");
+		check_recv_pkts(rxfd, correct_payload, 2);
+
+		if (proto == PF_INET) {
+			printf("different ttl doesn't coalesce: ");
+			check_recv_pkts(rxfd, correct_payload, 2);
+
+			printf("ip options doesn't coalesce: ");
+			correct_payload[2] = PAYLOAD_LEN;
+			check_recv_pkts(rxfd, correct_payload, 3);
+
+			printf("fragmented ip4 doesn't coalesce: ");
+			check_recv_pkts(rxfd, correct_payload, 2);
+		} else if (proto == PF_INET6) {
+			/* GRO doesn't check for ipv6 hop limit when flushing.
+			 * Hence no corresponding test to the ipv4 case.
+			 */
+			printf("fragmented ip6 doesn't coalesce: ");
+			correct_payload[0] = PAYLOAD_LEN * 2;
+			check_recv_pkts(rxfd, correct_payload, 2);
+		}
+	} else if (strcmp(testname, "large") == 0) {
+		int offset = proto == PF_INET ? 20 : 0;
+		int remainder = (MAX_PAYLOAD + offset) % MSS;
+
+		correct_payload[0] = (MAX_PAYLOAD + offset);
+		correct_payload[1] = remainder;
+		printf("Shouldn't coalesce if exceed IP max pkt size: ");
+		check_recv_pkts(rxfd, correct_payload, 2);
+
+		/* last segment sent individually, doesn't start new segment */
+		correct_payload[0] = correct_payload[0] - remainder;
+		correct_payload[1] = remainder + 1;
+		correct_payload[2] = remainder + 1;
+		check_recv_pkts(rxfd, correct_payload, 3);
+	} else {
+		error(1, 0, "Test case error, should never trigger");
+	}
+
+	if (close(rxfd))
+		error(1, 0, "socket close");
+}
+
+static void parse_args(int argc, char **argv)
+{
+	static const struct option opts[] = {
+		{ "dmac", required_argument, NULL, 'D' },
+		{ "iface", required_argument, NULL, 'i' },
+		{ "ipv4", no_argument, NULL, '4' },
+		{ "ipv6", no_argument, NULL, '6' },
+		{ "rx", no_argument, NULL, 'r' },
+		{ "smac", required_argument, NULL, 'S' },
+		{ "test", required_argument, NULL, 't' },
+		{ "verbose", no_argument, NULL, 'v' },
+		{ 0, 0, 0, 0 }
+	};
+	int c;
+
+	while ((c = getopt_long(argc, argv, "46D:i:rS:t:v", opts, NULL)) != -1) {
+		switch (c) {
+		case '4':
+			proto = PF_INET;
+			ethhdr_proto = htons(ETH_P_IP);
+			break;
+		case '6':
+			proto = PF_INET6;
+			ethhdr_proto = htons(ETH_P_IPV6);
+			break;
+		case 'D':
+			dmac = optarg;
+			break;
+		case 'i':
+			ifname = optarg;
+			break;
+		case 'r':
+			tx_socket = false;
+			break;
+		case 'S':
+			smac = optarg;
+			break;
+		case 't':
+			testname = optarg;
+			break;
+		case 'v':
+			verbose = true;
+			break;
+		default:
+			error(1, 0, "%s invalid option %c\n", __func__, c);
+			break;
+		}
+	}
+}
+
+int main(int argc, char **argv)
+{
+	parse_args(argc, argv);
+
+	if (proto == PF_INET) {
+		tcp_offset = ETH_HLEN + sizeof(struct iphdr);
+		total_hdr_len = tcp_offset + sizeof(struct tcphdr);
+	} else if (proto == PF_INET6) {
+		tcp_offset = ETH_HLEN + sizeof(struct ipv6hdr);
+		total_hdr_len = MAX_HDR_LEN;
+	} else {
+		error(1, 0, "Protocol family is not ipv4 or ipv6");
+	}
+
+	read_MAC(src_mac, smac);
+	read_MAC(dst_mac, dmac);
+
+	if (tx_socket)
+		gro_sender();
+	else
+		gro_receiver();
+	return 0;
+}
diff --git a/tools/testing/selftests/net/gro.sh b/tools/testing/selftests/net/gro.sh
new file mode 100755
index 000000000000..342ad27f631b
--- /dev/null
+++ b/tools/testing/selftests/net/gro.sh
@@ -0,0 +1,99 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+readonly SERVER_MAC="aa:00:00:00:00:02"
+readonly CLIENT_MAC="aa:00:00:00:00:01"
+readonly TESTS=("data" "ack" "flags" "tcp" "ip" "large")
+readonly PROTOS=("ipv4" "ipv6")
+dev=""
+test="all"
+proto="ipv4"
+
+run_test() {
+  local server_pid=0
+  local exit_code=0
+  local protocol=$1
+  local test=$2
+  local ARGS=( "--${protocol}" "--dmac" "${SERVER_MAC}" \
+  "--smac" "${CLIENT_MAC}" "--test" "${test}" "--verbose" )
+
+  setup_ns
+  # Each test is run 3 times to deflake, because given the receive timing,
+  # not all packets that should coalesce will be considered in the same flow
+  # on every try.
+  for tries in {1..3}; do
+    # Actual test starts here
+    ip netns exec server_ns ./gro "${ARGS[@]}" "--rx" "--iface" "server" \
+      1>>log.txt &
+    server_pid=$!
+    sleep 0.5  # to allow for socket init
+    ip netns exec client_ns ./gro "${ARGS[@]}" "--iface" "client" \
+      1>>log.txt
+    wait "${server_pid}"
+    exit_code=$?
+    if [[ "${exit_code}" -eq 0 ]]; then
+        break;
+    fi
+  done
+  cleanup_ns
+  echo ${exit_code}
+}
+
+run_all_tests() {
+  local failed_tests=()
+  for proto in "${PROTOS[@]}"; do
+    for test in "${TESTS[@]}"; do
+      echo "running test ${proto} ${test}" >&2
+      exit_code=$(run_test $proto $test)
+      if [[ "${exit_code}" -ne 0 ]]; then
+        failed_tests+=("${proto}_${test}")
+      fi;
+    done;
+  done
+  if [[ ${#failed_tests[@]} -ne 0 ]]; then
+    echo "failed tests: ${failed_tests[*]}. \
+    Please see log.txt for more logs"
+    exit 1
+  else
+    echo "All Tests Succeeded!"
+  fi;
+}
+
+usage() {
+  echo "Usage: $0 \
+  [-i <DEV>] \
+  [-t data|ack|flags|tcp|ip|large] \
+  [-p <ipv4|ipv6>]" 1>&2;
+  exit 1;
+}
+
+while getopts "i:t:p:" opt; do
+  case "${opt}" in
+    i)
+      dev="${OPTARG}"
+      ;;
+    t)
+      test="${OPTARG}"
+      ;;
+    p)
+      proto="${OPTARG}"
+      ;;
+    *)
+      usage
+      ;;
+  esac
+done
+
+if [ -n "$dev" ]; then
+	source setup_loopback.sh
+else
+	source setup_veth.sh
+fi
+
+setup
+trap cleanup EXIT
+if [[ "${test}" == "all" ]]; then
+  run_all_tests
+else
+  run_test "${proto}" "${test}"
+fi;
diff --git a/tools/testing/selftests/net/ioam6.sh b/tools/testing/selftests/net/ioam6.sh
new file mode 100755
index 000000000000..3caf72bb9c6a
--- /dev/null
+++ b/tools/testing/selftests/net/ioam6.sh
@@ -0,0 +1,652 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0+
+#
+# Author: Justin Iurman <justin.iurman@uliege.be>
+#
+# This script evaluates the IOAM insertion for IPv6 by checking the IOAM data
+# consistency directly inside packets on the receiver side. Tests are divided
+# into three categories: OUTPUT (evaluates the IOAM processing by the sender),
+# INPUT (evaluates the IOAM processing by the receiver) and GLOBAL (evaluates
+# wider use cases that do not fall into the other two categories). Both OUTPUT
+# and INPUT tests only use a two-node topology (alpha and beta), while GLOBAL
+# tests use the entire three-node topology (alpha, beta, gamma). Each test is
+# documented inside its own handler in the code below.
+#
+# An IOAM domain is configured from Alpha to Gamma but not on the reverse path.
+# When either Beta or Gamma is the destination (depending on the test category),
+# Alpha adds an IOAM option (Pre-allocated Trace) inside a Hop-by-hop.
+#
+#
+#            +-------------------+            +-------------------+
+#            |                   |            |                   |
+#            |    Alpha netns    |            |    Gamma netns    |
+#            |                   |            |                   |
+#            |  +-------------+  |            |  +-------------+  |
+#            |  |    veth0    |  |            |  |    veth0    |  |
+#            |  |  db01::2/64 |  |            |  |  db02::2/64 |  |
+#            |  +-------------+  |            |  +-------------+  |
+#            |         .         |            |         .         |
+#            +-------------------+            +-------------------+
+#                      .                                .
+#                      .                                .
+#                      .                                .
+#            +----------------------------------------------------+
+#            |         .                                .         |
+#            |  +-------------+                  +-------------+  |
+#            |  |    veth0    |                  |    veth1    |  |
+#            |  |  db01::1/64 | ................ |  db02::1/64 |  |
+#            |  +-------------+                  +-------------+  |
+#            |                                                    |
+#            |                      Beta netns                    |
+#            |                                                    |
+#            +----------------------------------------------------+
+#
+#
+#
+#        =============================================================
+#        |                Alpha - IOAM configuration                 |
+#        +===========================================================+
+#        | Node ID             | 1                                   |
+#        +-----------------------------------------------------------+
+#        | Node Wide ID        | 11111111                            |
+#        +-----------------------------------------------------------+
+#        | Ingress ID          | 0xffff (default value)              |
+#        +-----------------------------------------------------------+
+#        | Ingress Wide ID     | 0xffffffff (default value)          |
+#        +-----------------------------------------------------------+
+#        | Egress ID           | 101                                 |
+#        +-----------------------------------------------------------+
+#        | Egress Wide ID      | 101101                              |
+#        +-----------------------------------------------------------+
+#        | Namespace Data      | 0xdeadbee0                          |
+#        +-----------------------------------------------------------+
+#        | Namespace Wide Data | 0xcafec0caf00dc0de                  |
+#        +-----------------------------------------------------------+
+#        | Schema ID           | 777                                 |
+#        +-----------------------------------------------------------+
+#        | Schema Data         | something that will be 4n-aligned   |
+#        +-----------------------------------------------------------+
+#
+#
+#        =============================================================
+#        |                 Beta - IOAM configuration                 |
+#        +===========================================================+
+#        | Node ID             | 2                                   |
+#        +-----------------------------------------------------------+
+#        | Node Wide ID        | 22222222                            |
+#        +-----------------------------------------------------------+
+#        | Ingress ID          | 201                                 |
+#        +-----------------------------------------------------------+
+#        | Ingress Wide ID     | 201201                              |
+#        +-----------------------------------------------------------+
+#        | Egress ID           | 202                                 |
+#        +-----------------------------------------------------------+
+#        | Egress Wide ID      | 202202                              |
+#        +-----------------------------------------------------------+
+#        | Namespace Data      | 0xdeadbee1                          |
+#        +-----------------------------------------------------------+
+#        | Namespace Wide Data | 0xcafec0caf11dc0de                  |
+#        +-----------------------------------------------------------+
+#        | Schema ID           | 666                                 |
+#        +-----------------------------------------------------------+
+#        | Schema Data         | Hello there -Obi                    |
+#        +-----------------------------------------------------------+
+#
+#
+#        =============================================================
+#        |                Gamma - IOAM configuration                 |
+#        +===========================================================+
+#        | Node ID             | 3                                   |
+#        +-----------------------------------------------------------+
+#        | Node Wide ID        | 33333333                            |
+#        +-----------------------------------------------------------+
+#        | Ingress ID          | 301                                 |
+#        +-----------------------------------------------------------+
+#        | Ingress Wide ID     | 301301                              |
+#        +-----------------------------------------------------------+
+#        | Egress ID           | 0xffff (default value)              |
+#        +-----------------------------------------------------------+
+#        | Egress Wide ID      | 0xffffffff (default value)          |
+#        +-----------------------------------------------------------+
+#        | Namespace Data      | 0xdeadbee2                          |
+#        +-----------------------------------------------------------+
+#        | Namespace Wide Data | 0xcafec0caf22dc0de                  |
+#        +-----------------------------------------------------------+
+#        | Schema ID           | 0xffffff (= None)                   |
+#        +-----------------------------------------------------------+
+#        | Schema Data         |                                     |
+#        +-----------------------------------------------------------+
+
+
+################################################################################
+#                                                                              #
+# WARNING: Be careful if you modify the block below - it MUST be kept          #
+#          synchronized with configurations inside ioam6_parser.c and always   #
+#          reflect the same.                                                   #
+#                                                                              #
+################################################################################
+
+ALPHA=(
+	1					# ID
+	11111111				# Wide ID
+	0xffff					# Ingress ID
+	0xffffffff				# Ingress Wide ID
+	101					# Egress ID
+	101101					# Egress Wide ID
+	0xdeadbee0				# Namespace Data
+	0xcafec0caf00dc0de			# Namespace Wide Data
+	777					# Schema ID (0xffffff = None)
+	"something that will be 4n-aligned"	# Schema Data
+)
+
+BETA=(
+	2
+	22222222
+	201
+	201201
+	202
+	202202
+	0xdeadbee1
+	0xcafec0caf11dc0de
+	666
+	"Hello there -Obi"
+)
+
+GAMMA=(
+	3
+	33333333
+	301
+	301301
+	0xffff
+	0xffffffff
+	0xdeadbee2
+	0xcafec0caf22dc0de
+	0xffffff
+	""
+)
+
+TESTS_OUTPUT="
+	out_undef_ns
+	out_no_room
+	out_bits
+	out_full_supp_trace
+"
+
+TESTS_INPUT="
+	in_undef_ns
+	in_no_room
+	in_oflag
+	in_bits
+	in_full_supp_trace
+"
+
+TESTS_GLOBAL="
+	fwd_full_supp_trace
+"
+
+
+################################################################################
+#                                                                              #
+#                                   LIBRARY                                    #
+#                                                                              #
+################################################################################
+
+check_kernel_compatibility()
+{
+  ip netns add ioam-tmp-node
+  ip link add name veth0 netns ioam-tmp-node type veth \
+         peer name veth1 netns ioam-tmp-node
+
+  ip -netns ioam-tmp-node link set veth0 up
+  ip -netns ioam-tmp-node link set veth1 up
+
+  ip -netns ioam-tmp-node ioam namespace add 0 &>/dev/null
+  ns_ad=$?
+
+  ip -netns ioam-tmp-node ioam namespace show | grep -q "namespace 0"
+  ns_sh=$?
+
+  if [[ $ns_ad != 0 || $ns_sh != 0 ]]
+  then
+    echo "SKIP: kernel version probably too old, missing ioam support"
+    ip link del veth0 2>/dev/null || true
+    ip netns del ioam-tmp-node || true
+    exit 1
+  fi
+
+  ip -netns ioam-tmp-node route add db02::/64 encap ioam6 trace prealloc \
+         type 0x800000 ns 0 size 4 dev veth0 &>/dev/null
+  tr_ad=$?
+
+  ip -netns ioam-tmp-node -6 route | grep -q "encap ioam6 trace"
+  tr_sh=$?
+
+  if [[ $tr_ad != 0 || $tr_sh != 0 ]]
+  then
+    echo "SKIP: cannot attach an ioam trace to a route, did you compile" \
+         "without CONFIG_IPV6_IOAM6_LWTUNNEL?"
+    ip link del veth0 2>/dev/null || true
+    ip netns del ioam-tmp-node || true
+    exit 1
+  fi
+
+  ip link del veth0 2>/dev/null || true
+  ip netns del ioam-tmp-node || true
+}
+
+cleanup()
+{
+  ip link del ioam-veth-alpha 2>/dev/null || true
+  ip link del ioam-veth-gamma 2>/dev/null || true
+
+  ip netns del ioam-node-alpha || true
+  ip netns del ioam-node-beta || true
+  ip netns del ioam-node-gamma || true
+}
+
+setup()
+{
+  ip netns add ioam-node-alpha
+  ip netns add ioam-node-beta
+  ip netns add ioam-node-gamma
+
+  ip link add name ioam-veth-alpha netns ioam-node-alpha type veth \
+         peer name ioam-veth-betaL netns ioam-node-beta
+  ip link add name ioam-veth-betaR netns ioam-node-beta type veth \
+         peer name ioam-veth-gamma netns ioam-node-gamma
+
+  ip -netns ioam-node-alpha link set ioam-veth-alpha name veth0
+  ip -netns ioam-node-beta link set ioam-veth-betaL name veth0
+  ip -netns ioam-node-beta link set ioam-veth-betaR name veth1
+  ip -netns ioam-node-gamma link set ioam-veth-gamma name veth0
+
+  ip -netns ioam-node-alpha addr add db01::2/64 dev veth0
+  ip -netns ioam-node-alpha link set veth0 up
+  ip -netns ioam-node-alpha link set lo up
+  ip -netns ioam-node-alpha route add db02::/64 via db01::1 dev veth0
+  ip -netns ioam-node-alpha route del db01::/64
+  ip -netns ioam-node-alpha route add db01::/64 dev veth0
+
+  ip -netns ioam-node-beta addr add db01::1/64 dev veth0
+  ip -netns ioam-node-beta addr add db02::1/64 dev veth1
+  ip -netns ioam-node-beta link set veth0 up
+  ip -netns ioam-node-beta link set veth1 up
+  ip -netns ioam-node-beta link set lo up
+
+  ip -netns ioam-node-gamma addr add db02::2/64 dev veth0
+  ip -netns ioam-node-gamma link set veth0 up
+  ip -netns ioam-node-gamma link set lo up
+  ip -netns ioam-node-gamma route add db01::/64 via db02::1 dev veth0
+
+  # - IOAM config -
+  ip netns exec ioam-node-alpha sysctl -wq net.ipv6.ioam6_id=${ALPHA[0]}
+  ip netns exec ioam-node-alpha sysctl -wq net.ipv6.ioam6_id_wide=${ALPHA[1]}
+  ip netns exec ioam-node-alpha sysctl -wq net.ipv6.conf.veth0.ioam6_id=${ALPHA[4]}
+  ip netns exec ioam-node-alpha sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${ALPHA[5]}
+  ip -netns ioam-node-alpha ioam namespace add 123 data ${ALPHA[6]} wide ${ALPHA[7]}
+  ip -netns ioam-node-alpha ioam schema add ${ALPHA[8]} "${ALPHA[9]}"
+  ip -netns ioam-node-alpha ioam namespace set 123 schema ${ALPHA[8]}
+
+  ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.all.forwarding=1
+  ip netns exec ioam-node-beta sysctl -wq net.ipv6.ioam6_id=${BETA[0]}
+  ip netns exec ioam-node-beta sysctl -wq net.ipv6.ioam6_id_wide=${BETA[1]}
+  ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1
+  ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_id=${BETA[2]}
+  ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${BETA[3]}
+  ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth1.ioam6_id=${BETA[4]}
+  ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth1.ioam6_id_wide=${BETA[5]}
+  ip -netns ioam-node-beta ioam namespace add 123 data ${BETA[6]} wide ${BETA[7]}
+  ip -netns ioam-node-beta ioam schema add ${BETA[8]} "${BETA[9]}"
+  ip -netns ioam-node-beta ioam namespace set 123 schema ${BETA[8]}
+
+  ip netns exec ioam-node-gamma sysctl -wq net.ipv6.ioam6_id=${GAMMA[0]}
+  ip netns exec ioam-node-gamma sysctl -wq net.ipv6.ioam6_id_wide=${GAMMA[1]}
+  ip netns exec ioam-node-gamma sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1
+  ip netns exec ioam-node-gamma sysctl -wq net.ipv6.conf.veth0.ioam6_id=${GAMMA[2]}
+  ip netns exec ioam-node-gamma sysctl -wq net.ipv6.conf.veth0.ioam6_id_wide=${GAMMA[3]}
+  ip -netns ioam-node-gamma ioam namespace add 123 data ${GAMMA[6]} wide ${GAMMA[7]}
+
+  sleep 1
+
+  ip netns exec ioam-node-alpha ping6 -c 5 -W 1 db02::2 &>/dev/null
+  if [ $? != 0 ]
+  then
+    echo "Setup FAILED"
+    cleanup &>/dev/null
+    exit 0
+  fi
+}
+
+log_test_passed()
+{
+  local desc=$1
+  printf "TEST: %-60s  [ OK ]\n" "${desc}"
+}
+
+log_test_failed()
+{
+  local desc=$1
+  printf "TEST: %-60s  [FAIL]\n" "${desc}"
+}
+
+run_test()
+{
+  local name=$1
+  local desc=$2
+  local node_src=$3
+  local node_dst=$4
+  local ip6_src=$5
+  local ip6_dst=$6
+  local if_dst=$7
+  local trace_type=$8
+  local ioam_ns=$9
+
+  ip netns exec $node_dst ./ioam6_parser $if_dst $name $ip6_src $ip6_dst \
+         $trace_type $ioam_ns &
+  local spid=$!
+  sleep 0.1
+
+  ip netns exec $node_src ping6 -t 64 -c 1 -W 1 $ip6_dst &>/dev/null
+  if [ $? != 0 ]
+  then
+    log_test_failed "${desc}"
+    kill -2 $spid &>/dev/null
+  else
+    wait $spid
+    [ $? = 0 ] && log_test_passed "${desc}" || log_test_failed "${desc}"
+  fi
+}
+
+run()
+{
+  echo
+  echo "OUTPUT tests"
+  printf "%0.s-" {1..74}
+  echo
+
+  # set OUTPUT settings
+  ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=0
+
+  for t in $TESTS_OUTPUT
+  do
+    $t
+  done
+
+  # clean OUTPUT settings
+  ip netns exec ioam-node-beta sysctl -wq net.ipv6.conf.veth0.ioam6_enabled=1
+  ip -netns ioam-node-alpha route change db01::/64 dev veth0
+
+
+  echo
+  echo "INPUT tests"
+  printf "%0.s-" {1..74}
+  echo
+
+  # set INPUT settings
+  ip -netns ioam-node-alpha ioam namespace del 123
+
+  for t in $TESTS_INPUT
+  do
+    $t
+  done
+
+  # clean INPUT settings
+  ip -netns ioam-node-alpha ioam namespace add 123 \
+         data ${ALPHA[6]} wide ${ALPHA[7]}
+  ip -netns ioam-node-alpha ioam namespace set 123 schema ${ALPHA[8]}
+  ip -netns ioam-node-alpha route change db01::/64 dev veth0
+
+
+  echo
+  echo "GLOBAL tests"
+  printf "%0.s-" {1..74}
+  echo
+
+  for t in $TESTS_GLOBAL
+  do
+    $t
+  done
+}
+
+bit2type=(
+  0x800000 0x400000 0x200000 0x100000 0x080000 0x040000 0x020000 0x010000
+  0x008000 0x004000 0x002000 0x001000 0x000800 0x000400 0x000200 0x000100
+  0x000080 0x000040 0x000020 0x000010 0x000008 0x000004 0x000002
+)
+bit2size=( 4 4 4 4 4 4 4 4 8 8 8 4 4 4 4 4 4 4 4 4 4 4 4 )
+
+
+################################################################################
+#                                                                              #
+#                              OUTPUT tests                                    #
+#                                                                              #
+#   Two nodes (sender/receiver), IOAM disabled on ingress for the receiver.    #
+################################################################################
+
+out_undef_ns()
+{
+  ##############################################################################
+  # Make sure that the encap node won't fill the trace if the chosen IOAM      #
+  # namespace is not configured locally.                                       #
+  ##############################################################################
+  local desc="Unknown IOAM namespace"
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
+         type 0x800000 ns 0 size 4 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
+         db01::1 veth0 0x800000 0
+}
+
+out_no_room()
+{
+  ##############################################################################
+  # Make sure that the encap node won't fill the trace and will set the        #
+  # Overflow flag since there is no room enough for its data.                  #
+  ##############################################################################
+  local desc="Missing trace room"
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
+         type 0xc00000 ns 123 size 4 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
+         db01::1 veth0 0xc00000 123
+}
+
+out_bits()
+{
+  ##############################################################################
+  # Make sure that, for each trace type bit, the encap node will either:       #
+  #  (i)  fill the trace with its data when it is a supported bit              #
+  #  (ii) not fill the trace with its data when it is an unsupported bit       #
+  ##############################################################################
+  local desc="Trace type with bit <n> only"
+
+  local tmp=${bit2size[22]}
+  bit2size[22]=$(( $tmp + ${#ALPHA[9]} + ((4 - (${#ALPHA[9]} % 4)) % 4) ))
+
+  for i in {0..22}
+  do
+    ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace \
+           prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} dev veth0
+
+    run_test "out_bit$i" "${desc/<n>/$i}" ioam-node-alpha ioam-node-beta \
+           db01::2 db01::1 veth0 ${bit2type[$i]} 123
+  done
+
+  bit2size[22]=$tmp
+}
+
+out_full_supp_trace()
+{
+  ##############################################################################
+  # Make sure that the encap node will correctly fill a full trace. Be careful,#
+  # "full trace" here does NOT mean all bits (only supported ones).            #
+  ##############################################################################
+  local desc="Full supported trace"
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
+         type 0xfff002 ns 123 size 100 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
+         db01::1 veth0 0xfff002 123
+}
+
+
+################################################################################
+#                                                                              #
+#                               INPUT tests                                    #
+#                                                                              #
+#     Two nodes (sender/receiver), the sender MUST NOT fill the trace upon     #
+#     insertion -> the IOAM namespace configured on the sender is removed      #
+#     and is used in the inserted trace to force the sender not to fill it.    #
+################################################################################
+
+in_undef_ns()
+{
+  ##############################################################################
+  # Make sure that the receiving node won't fill the trace if the related IOAM #
+  # namespace is not configured locally.                                       #
+  ##############################################################################
+  local desc="Unknown IOAM namespace"
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
+         type 0x800000 ns 0 size 4 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
+         db01::1 veth0 0x800000 0
+}
+
+in_no_room()
+{
+  ##############################################################################
+  # Make sure that the receiving node won't fill the trace and will set the    #
+  # Overflow flag if there is no room enough for its data.                     #
+  ##############################################################################
+  local desc="Missing trace room"
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
+         type 0xc00000 ns 123 size 4 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
+         db01::1 veth0 0xc00000 123
+}
+
+in_bits()
+{
+  ##############################################################################
+  # Make sure that, for each trace type bit, the receiving node will either:   #
+  #  (i)  fill the trace with its data when it is a supported bit              #
+  #  (ii) not fill the trace with its data when it is an unsupported bit       #
+  ##############################################################################
+  local desc="Trace type with bit <n> only"
+
+  local tmp=${bit2size[22]}
+  bit2size[22]=$(( $tmp + ${#BETA[9]} + ((4 - (${#BETA[9]} % 4)) % 4) ))
+
+  for i in {0..22}
+  do
+    ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace \
+           prealloc type ${bit2type[$i]} ns 123 size ${bit2size[$i]} dev veth0
+
+    run_test "in_bit$i" "${desc/<n>/$i}" ioam-node-alpha ioam-node-beta \
+           db01::2 db01::1 veth0 ${bit2type[$i]} 123
+  done
+
+  bit2size[22]=$tmp
+}
+
+in_oflag()
+{
+  ##############################################################################
+  # Make sure that the receiving node won't fill the trace since the Overflow  #
+  # flag is set.                                                               #
+  ##############################################################################
+  local desc="Overflow flag is set"
+
+  # Exception:
+  #   Here, we need the sender to set the Overflow flag. For that, we will add
+  #   back the IOAM namespace that was previously configured on the sender.
+  ip -netns ioam-node-alpha ioam namespace add 123
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
+         type 0xc00000 ns 123 size 4 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
+         db01::1 veth0 0xc00000 123
+
+  # And we clean the exception for this test to get things back to normal for
+  # other INPUT tests
+  ip -netns ioam-node-alpha ioam namespace del 123
+}
+
+in_full_supp_trace()
+{
+  ##############################################################################
+  # Make sure that the receiving node will correctly fill a full trace. Be     #
+  # careful, "full trace" here does NOT mean all bits (only supported ones).   #
+  ##############################################################################
+  local desc="Full supported trace"
+
+  ip -netns ioam-node-alpha route change db01::/64 encap ioam6 trace prealloc \
+         type 0xfff002 ns 123 size 80 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-beta db01::2 \
+         db01::1 veth0 0xfff002 123
+}
+
+
+################################################################################
+#                                                                              #
+#                              GLOBAL tests                                    #
+#                                                                              #
+#   Three nodes (sender/router/receiver), IOAM fully enabled on every node.    #
+################################################################################
+
+fwd_full_supp_trace()
+{
+  ##############################################################################
+  # Make sure that all three nodes correctly filled the full supported trace   #
+  # by checking that the trace data is consistent with the predefined config.  #
+  ##############################################################################
+  local desc="Forward - Full supported trace"
+
+  ip -netns ioam-node-alpha route change db02::/64 encap ioam6 trace prealloc \
+         type 0xfff002 ns 123 size 244 via db01::1 dev veth0
+
+  run_test ${FUNCNAME[0]} "${desc}" ioam-node-alpha ioam-node-gamma db01::2 \
+         db02::2 veth0 0xfff002 123
+}
+
+
+################################################################################
+#                                                                              #
+#                                     MAIN                                     #
+#                                                                              #
+################################################################################
+
+if [ "$(id -u)" -ne 0 ]
+then
+  echo "SKIP: Need root privileges"
+  exit 1
+fi
+
+if [ ! -x "$(command -v ip)" ]
+then
+  echo "SKIP: Could not run test without ip tool"
+  exit 1
+fi
+
+ip ioam &>/dev/null
+if [ $? = 1 ]
+then
+  echo "SKIP: iproute2 too old, missing ioam command"
+  exit 1
+fi
+
+check_kernel_compatibility
+
+cleanup &>/dev/null
+setup
+run
+cleanup &>/dev/null
diff --git a/tools/testing/selftests/net/ioam6_parser.c b/tools/testing/selftests/net/ioam6_parser.c
new file mode 100644
index 000000000000..d376cb2c383c
--- /dev/null
+++ b/tools/testing/selftests/net/ioam6_parser.c
@@ -0,0 +1,720 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Author: Justin Iurman (justin.iurman@uliege.be)
+ *
+ * IOAM tester for IPv6, see ioam6.sh for details on each test case.
+ */
+#include <arpa/inet.h>
+#include <errno.h>
+#include <limits.h>
+#include <linux/const.h>
+#include <linux/if_ether.h>
+#include <linux/ioam6.h>
+#include <linux/ipv6.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+struct ioam_config {
+	__u32 id;
+	__u64 wide;
+	__u16 ingr_id;
+	__u16 egr_id;
+	__u32 ingr_wide;
+	__u32 egr_wide;
+	__u32 ns_data;
+	__u64 ns_wide;
+	__u32 sc_id;
+	__u8 hlim;
+	char *sc_data;
+};
+
+/*
+ * Be careful if you modify structs below - everything MUST be kept synchronized
+ * with configurations inside ioam6.sh and always reflect the same.
+ */
+
+static struct ioam_config node1 = {
+	.id = 1,
+	.wide = 11111111,
+	.ingr_id = 0xffff, /* default value */
+	.egr_id = 101,
+	.ingr_wide = 0xffffffff, /* default value */
+	.egr_wide = 101101,
+	.ns_data = 0xdeadbee0,
+	.ns_wide = 0xcafec0caf00dc0de,
+	.sc_id = 777,
+	.sc_data = "something that will be 4n-aligned",
+	.hlim = 64,
+};
+
+static struct ioam_config node2 = {
+	.id = 2,
+	.wide = 22222222,
+	.ingr_id = 201,
+	.egr_id = 202,
+	.ingr_wide = 201201,
+	.egr_wide = 202202,
+	.ns_data = 0xdeadbee1,
+	.ns_wide = 0xcafec0caf11dc0de,
+	.sc_id = 666,
+	.sc_data = "Hello there -Obi",
+	.hlim = 63,
+};
+
+static struct ioam_config node3 = {
+	.id = 3,
+	.wide = 33333333,
+	.ingr_id = 301,
+	.egr_id = 0xffff, /* default value */
+	.ingr_wide = 301301,
+	.egr_wide = 0xffffffff, /* default value */
+	.ns_data = 0xdeadbee2,
+	.ns_wide = 0xcafec0caf22dc0de,
+	.sc_id = 0xffffff, /* default value */
+	.sc_data = NULL,
+	.hlim = 62,
+};
+
+enum {
+	/**********
+	 * OUTPUT *
+	 **********/
+	TEST_OUT_UNDEF_NS,
+	TEST_OUT_NO_ROOM,
+	TEST_OUT_BIT0,
+	TEST_OUT_BIT1,
+	TEST_OUT_BIT2,
+	TEST_OUT_BIT3,
+	TEST_OUT_BIT4,
+	TEST_OUT_BIT5,
+	TEST_OUT_BIT6,
+	TEST_OUT_BIT7,
+	TEST_OUT_BIT8,
+	TEST_OUT_BIT9,
+	TEST_OUT_BIT10,
+	TEST_OUT_BIT11,
+	TEST_OUT_BIT12,
+	TEST_OUT_BIT13,
+	TEST_OUT_BIT14,
+	TEST_OUT_BIT15,
+	TEST_OUT_BIT16,
+	TEST_OUT_BIT17,
+	TEST_OUT_BIT18,
+	TEST_OUT_BIT19,
+	TEST_OUT_BIT20,
+	TEST_OUT_BIT21,
+	TEST_OUT_BIT22,
+	TEST_OUT_FULL_SUPP_TRACE,
+
+	/*********
+	 * INPUT *
+	 *********/
+	TEST_IN_UNDEF_NS,
+	TEST_IN_NO_ROOM,
+	TEST_IN_OFLAG,
+	TEST_IN_BIT0,
+	TEST_IN_BIT1,
+	TEST_IN_BIT2,
+	TEST_IN_BIT3,
+	TEST_IN_BIT4,
+	TEST_IN_BIT5,
+	TEST_IN_BIT6,
+	TEST_IN_BIT7,
+	TEST_IN_BIT8,
+	TEST_IN_BIT9,
+	TEST_IN_BIT10,
+	TEST_IN_BIT11,
+	TEST_IN_BIT12,
+	TEST_IN_BIT13,
+	TEST_IN_BIT14,
+	TEST_IN_BIT15,
+	TEST_IN_BIT16,
+	TEST_IN_BIT17,
+	TEST_IN_BIT18,
+	TEST_IN_BIT19,
+	TEST_IN_BIT20,
+	TEST_IN_BIT21,
+	TEST_IN_BIT22,
+	TEST_IN_FULL_SUPP_TRACE,
+
+	/**********
+	 * GLOBAL *
+	 **********/
+	TEST_FWD_FULL_SUPP_TRACE,
+
+	__TEST_MAX,
+};
+
+static int check_ioam_header(int tid, struct ioam6_trace_hdr *ioam6h,
+			     __u32 trace_type, __u16 ioam_ns)
+{
+	if (__be16_to_cpu(ioam6h->namespace_id) != ioam_ns ||
+	    __be32_to_cpu(ioam6h->type_be32) != (trace_type << 8))
+		return 1;
+
+	switch (tid) {
+	case TEST_OUT_UNDEF_NS:
+	case TEST_IN_UNDEF_NS:
+		return ioam6h->overflow ||
+		       ioam6h->nodelen != 1 ||
+		       ioam6h->remlen != 1;
+
+	case TEST_OUT_NO_ROOM:
+	case TEST_IN_NO_ROOM:
+	case TEST_IN_OFLAG:
+		return !ioam6h->overflow ||
+		       ioam6h->nodelen != 2 ||
+		       ioam6h->remlen != 1;
+
+	case TEST_OUT_BIT0:
+	case TEST_IN_BIT0:
+	case TEST_OUT_BIT1:
+	case TEST_IN_BIT1:
+	case TEST_OUT_BIT2:
+	case TEST_IN_BIT2:
+	case TEST_OUT_BIT3:
+	case TEST_IN_BIT3:
+	case TEST_OUT_BIT4:
+	case TEST_IN_BIT4:
+	case TEST_OUT_BIT5:
+	case TEST_IN_BIT5:
+	case TEST_OUT_BIT6:
+	case TEST_IN_BIT6:
+	case TEST_OUT_BIT7:
+	case TEST_IN_BIT7:
+	case TEST_OUT_BIT11:
+	case TEST_IN_BIT11:
+		return ioam6h->overflow ||
+		       ioam6h->nodelen != 1 ||
+		       ioam6h->remlen;
+
+	case TEST_OUT_BIT8:
+	case TEST_IN_BIT8:
+	case TEST_OUT_BIT9:
+	case TEST_IN_BIT9:
+	case TEST_OUT_BIT10:
+	case TEST_IN_BIT10:
+		return ioam6h->overflow ||
+		       ioam6h->nodelen != 2 ||
+		       ioam6h->remlen;
+
+	case TEST_OUT_BIT12:
+	case TEST_IN_BIT12:
+	case TEST_OUT_BIT13:
+	case TEST_IN_BIT13:
+	case TEST_OUT_BIT14:
+	case TEST_IN_BIT14:
+	case TEST_OUT_BIT15:
+	case TEST_IN_BIT15:
+	case TEST_OUT_BIT16:
+	case TEST_IN_BIT16:
+	case TEST_OUT_BIT17:
+	case TEST_IN_BIT17:
+	case TEST_OUT_BIT18:
+	case TEST_IN_BIT18:
+	case TEST_OUT_BIT19:
+	case TEST_IN_BIT19:
+	case TEST_OUT_BIT20:
+	case TEST_IN_BIT20:
+	case TEST_OUT_BIT21:
+	case TEST_IN_BIT21:
+		return ioam6h->overflow ||
+		       ioam6h->nodelen ||
+		       ioam6h->remlen != 1;
+
+	case TEST_OUT_BIT22:
+	case TEST_IN_BIT22:
+		return ioam6h->overflow ||
+		       ioam6h->nodelen ||
+		       ioam6h->remlen;
+
+	case TEST_OUT_FULL_SUPP_TRACE:
+	case TEST_IN_FULL_SUPP_TRACE:
+	case TEST_FWD_FULL_SUPP_TRACE:
+		return ioam6h->overflow ||
+		       ioam6h->nodelen != 15 ||
+		       ioam6h->remlen;
+
+	default:
+		break;
+	}
+
+	return 1;
+}
+
+static int check_ioam6_data(__u8 **p, struct ioam6_trace_hdr *ioam6h,
+			    const struct ioam_config cnf)
+{
+	unsigned int len;
+	__u8 aligned;
+	__u64 raw64;
+	__u32 raw32;
+
+	if (ioam6h->type.bit0) {
+		raw32 = __be32_to_cpu(*((__u32 *)*p));
+		if (cnf.hlim != (raw32 >> 24) || cnf.id != (raw32 & 0xffffff))
+			return 1;
+		*p += sizeof(__u32);
+	}
+
+	if (ioam6h->type.bit1) {
+		raw32 = __be32_to_cpu(*((__u32 *)*p));
+		if (cnf.ingr_id != (raw32 >> 16) ||
+		    cnf.egr_id != (raw32 & 0xffff))
+			return 1;
+		*p += sizeof(__u32);
+	}
+
+	if (ioam6h->type.bit2)
+		*p += sizeof(__u32);
+
+	if (ioam6h->type.bit3)
+		*p += sizeof(__u32);
+
+	if (ioam6h->type.bit4) {
+		if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
+			return 1;
+		*p += sizeof(__u32);
+	}
+
+	if (ioam6h->type.bit5) {
+		if (__be32_to_cpu(*((__u32 *)*p)) != cnf.ns_data)
+			return 1;
+		*p += sizeof(__u32);
+	}
+
+	if (ioam6h->type.bit6) {
+		if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
+			return 1;
+		*p += sizeof(__u32);
+	}
+
+	if (ioam6h->type.bit7) {
+		if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
+			return 1;
+		*p += sizeof(__u32);
+	}
+
+	if (ioam6h->type.bit8) {
+		raw64 = __be64_to_cpu(*((__u64 *)*p));
+		if (cnf.hlim != (raw64 >> 56) ||
+		    cnf.wide != (raw64 & 0xffffffffffffff))
+			return 1;
+		*p += sizeof(__u64);
+	}
+
+	if (ioam6h->type.bit9) {
+		if (__be32_to_cpu(*((__u32 *)*p)) != cnf.ingr_wide)
+			return 1;
+		*p += sizeof(__u32);
+
+		if (__be32_to_cpu(*((__u32 *)*p)) != cnf.egr_wide)
+			return 1;
+		*p += sizeof(__u32);
+	}
+
+	if (ioam6h->type.bit10) {
+		if (__be64_to_cpu(*((__u64 *)*p)) != cnf.ns_wide)
+			return 1;
+		*p += sizeof(__u64);
+	}
+
+	if (ioam6h->type.bit11) {
+		if (__be32_to_cpu(*((__u32 *)*p)) != 0xffffffff)
+			return 1;
+		*p += sizeof(__u32);
+	}
+
+	if (ioam6h->type.bit22) {
+		len = cnf.sc_data ? strlen(cnf.sc_data) : 0;
+		aligned = cnf.sc_data ? __ALIGN_KERNEL(len, 4) : 0;
+
+		raw32 = __be32_to_cpu(*((__u32 *)*p));
+		if (aligned != (raw32 >> 24) * 4 ||
+		    cnf.sc_id != (raw32 & 0xffffff))
+			return 1;
+		*p += sizeof(__u32);
+
+		if (cnf.sc_data) {
+			if (strncmp((char *)*p, cnf.sc_data, len))
+				return 1;
+
+			*p += len;
+			aligned -= len;
+
+			while (aligned--) {
+				if (**p != '\0')
+					return 1;
+				*p += sizeof(__u8);
+			}
+		}
+	}
+
+	return 0;
+}
+
+static int check_ioam_header_and_data(int tid, struct ioam6_trace_hdr *ioam6h,
+				      __u32 trace_type, __u16 ioam_ns)
+{
+	__u8 *p;
+
+	if (check_ioam_header(tid, ioam6h, trace_type, ioam_ns))
+		return 1;
+
+	p = ioam6h->data + ioam6h->remlen * 4;
+
+	switch (tid) {
+	case TEST_OUT_BIT0:
+	case TEST_OUT_BIT1:
+	case TEST_OUT_BIT2:
+	case TEST_OUT_BIT3:
+	case TEST_OUT_BIT4:
+	case TEST_OUT_BIT5:
+	case TEST_OUT_BIT6:
+	case TEST_OUT_BIT7:
+	case TEST_OUT_BIT8:
+	case TEST_OUT_BIT9:
+	case TEST_OUT_BIT10:
+	case TEST_OUT_BIT11:
+	case TEST_OUT_BIT22:
+	case TEST_OUT_FULL_SUPP_TRACE:
+		return check_ioam6_data(&p, ioam6h, node1);
+
+	case TEST_IN_BIT0:
+	case TEST_IN_BIT1:
+	case TEST_IN_BIT2:
+	case TEST_IN_BIT3:
+	case TEST_IN_BIT4:
+	case TEST_IN_BIT5:
+	case TEST_IN_BIT6:
+	case TEST_IN_BIT7:
+	case TEST_IN_BIT8:
+	case TEST_IN_BIT9:
+	case TEST_IN_BIT10:
+	case TEST_IN_BIT11:
+	case TEST_IN_BIT22:
+	case TEST_IN_FULL_SUPP_TRACE:
+	{
+		__u32 tmp32 = node2.egr_wide;
+		__u16 tmp16 = node2.egr_id;
+		int res;
+
+		node2.egr_id = 0xffff;
+		node2.egr_wide = 0xffffffff;
+
+		res = check_ioam6_data(&p, ioam6h, node2);
+
+		node2.egr_id = tmp16;
+		node2.egr_wide = tmp32;
+
+		return res;
+	}
+
+	case TEST_FWD_FULL_SUPP_TRACE:
+		if (check_ioam6_data(&p, ioam6h, node3))
+			return 1;
+		if (check_ioam6_data(&p, ioam6h, node2))
+			return 1;
+		return check_ioam6_data(&p, ioam6h, node1);
+
+	default:
+		break;
+	}
+
+	return 1;
+}
+
+static int str2id(const char *tname)
+{
+	if (!strcmp("out_undef_ns", tname))
+		return TEST_OUT_UNDEF_NS;
+	if (!strcmp("out_no_room", tname))
+		return TEST_OUT_NO_ROOM;
+	if (!strcmp("out_bit0", tname))
+		return TEST_OUT_BIT0;
+	if (!strcmp("out_bit1", tname))
+		return TEST_OUT_BIT1;
+	if (!strcmp("out_bit2", tname))
+		return TEST_OUT_BIT2;
+	if (!strcmp("out_bit3", tname))
+		return TEST_OUT_BIT3;
+	if (!strcmp("out_bit4", tname))
+		return TEST_OUT_BIT4;
+	if (!strcmp("out_bit5", tname))
+		return TEST_OUT_BIT5;
+	if (!strcmp("out_bit6", tname))
+		return TEST_OUT_BIT6;
+	if (!strcmp("out_bit7", tname))
+		return TEST_OUT_BIT7;
+	if (!strcmp("out_bit8", tname))
+		return TEST_OUT_BIT8;
+	if (!strcmp("out_bit9", tname))
+		return TEST_OUT_BIT9;
+	if (!strcmp("out_bit10", tname))
+		return TEST_OUT_BIT10;
+	if (!strcmp("out_bit11", tname))
+		return TEST_OUT_BIT11;
+	if (!strcmp("out_bit12", tname))
+		return TEST_OUT_BIT12;
+	if (!strcmp("out_bit13", tname))
+		return TEST_OUT_BIT13;
+	if (!strcmp("out_bit14", tname))
+		return TEST_OUT_BIT14;
+	if (!strcmp("out_bit15", tname))
+		return TEST_OUT_BIT15;
+	if (!strcmp("out_bit16", tname))
+		return TEST_OUT_BIT16;
+	if (!strcmp("out_bit17", tname))
+		return TEST_OUT_BIT17;
+	if (!strcmp("out_bit18", tname))
+		return TEST_OUT_BIT18;
+	if (!strcmp("out_bit19", tname))
+		return TEST_OUT_BIT19;
+	if (!strcmp("out_bit20", tname))
+		return TEST_OUT_BIT20;
+	if (!strcmp("out_bit21", tname))
+		return TEST_OUT_BIT21;
+	if (!strcmp("out_bit22", tname))
+		return TEST_OUT_BIT22;
+	if (!strcmp("out_full_supp_trace", tname))
+		return TEST_OUT_FULL_SUPP_TRACE;
+	if (!strcmp("in_undef_ns", tname))
+		return TEST_IN_UNDEF_NS;
+	if (!strcmp("in_no_room", tname))
+		return TEST_IN_NO_ROOM;
+	if (!strcmp("in_oflag", tname))
+		return TEST_IN_OFLAG;
+	if (!strcmp("in_bit0", tname))
+		return TEST_IN_BIT0;
+	if (!strcmp("in_bit1", tname))
+		return TEST_IN_BIT1;
+	if (!strcmp("in_bit2", tname))
+		return TEST_IN_BIT2;
+	if (!strcmp("in_bit3", tname))
+		return TEST_IN_BIT3;
+	if (!strcmp("in_bit4", tname))
+		return TEST_IN_BIT4;
+	if (!strcmp("in_bit5", tname))
+		return TEST_IN_BIT5;
+	if (!strcmp("in_bit6", tname))
+		return TEST_IN_BIT6;
+	if (!strcmp("in_bit7", tname))
+		return TEST_IN_BIT7;
+	if (!strcmp("in_bit8", tname))
+		return TEST_IN_BIT8;
+	if (!strcmp("in_bit9", tname))
+		return TEST_IN_BIT9;
+	if (!strcmp("in_bit10", tname))
+		return TEST_IN_BIT10;
+	if (!strcmp("in_bit11", tname))
+		return TEST_IN_BIT11;
+	if (!strcmp("in_bit12", tname))
+		return TEST_IN_BIT12;
+	if (!strcmp("in_bit13", tname))
+		return TEST_IN_BIT13;
+	if (!strcmp("in_bit14", tname))
+		return TEST_IN_BIT14;
+	if (!strcmp("in_bit15", tname))
+		return TEST_IN_BIT15;
+	if (!strcmp("in_bit16", tname))
+		return TEST_IN_BIT16;
+	if (!strcmp("in_bit17", tname))
+		return TEST_IN_BIT17;
+	if (!strcmp("in_bit18", tname))
+		return TEST_IN_BIT18;
+	if (!strcmp("in_bit19", tname))
+		return TEST_IN_BIT19;
+	if (!strcmp("in_bit20", tname))
+		return TEST_IN_BIT20;
+	if (!strcmp("in_bit21", tname))
+		return TEST_IN_BIT21;
+	if (!strcmp("in_bit22", tname))
+		return TEST_IN_BIT22;
+	if (!strcmp("in_full_supp_trace", tname))
+		return TEST_IN_FULL_SUPP_TRACE;
+	if (!strcmp("fwd_full_supp_trace", tname))
+		return TEST_FWD_FULL_SUPP_TRACE;
+
+	return -1;
+}
+
+static int ipv6_addr_equal(const struct in6_addr *a1, const struct in6_addr *a2)
+{
+	return ((a1->s6_addr32[0] ^ a2->s6_addr32[0]) |
+		(a1->s6_addr32[1] ^ a2->s6_addr32[1]) |
+		(a1->s6_addr32[2] ^ a2->s6_addr32[2]) |
+		(a1->s6_addr32[3] ^ a2->s6_addr32[3])) == 0;
+}
+
+static int get_u32(__u32 *val, const char *arg, int base)
+{
+	unsigned long res;
+	char *ptr;
+
+	if (!arg || !*arg)
+		return -1;
+	res = strtoul(arg, &ptr, base);
+
+	if (!ptr || ptr == arg || *ptr)
+		return -1;
+
+	if (res == ULONG_MAX && errno == ERANGE)
+		return -1;
+
+	if (res > 0xFFFFFFFFUL)
+		return -1;
+
+	*val = res;
+	return 0;
+}
+
+static int get_u16(__u16 *val, const char *arg, int base)
+{
+	unsigned long res;
+	char *ptr;
+
+	if (!arg || !*arg)
+		return -1;
+	res = strtoul(arg, &ptr, base);
+
+	if (!ptr || ptr == arg || *ptr)
+		return -1;
+
+	if (res == ULONG_MAX && errno == ERANGE)
+		return -1;
+
+	if (res > 0xFFFFUL)
+		return -1;
+
+	*val = res;
+	return 0;
+}
+
+static int (*func[__TEST_MAX])(int, struct ioam6_trace_hdr *, __u32, __u16) = {
+	[TEST_OUT_UNDEF_NS]		= check_ioam_header,
+	[TEST_OUT_NO_ROOM]		= check_ioam_header,
+	[TEST_OUT_BIT0]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT1]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT2]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT3]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT4]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT5]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT6]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT7]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT8]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT9]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT10]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT11]		= check_ioam_header_and_data,
+	[TEST_OUT_BIT12]		= check_ioam_header,
+	[TEST_OUT_BIT13]		= check_ioam_header,
+	[TEST_OUT_BIT14]		= check_ioam_header,
+	[TEST_OUT_BIT15]		= check_ioam_header,
+	[TEST_OUT_BIT16]		= check_ioam_header,
+	[TEST_OUT_BIT17]		= check_ioam_header,
+	[TEST_OUT_BIT18]		= check_ioam_header,
+	[TEST_OUT_BIT19]		= check_ioam_header,
+	[TEST_OUT_BIT20]		= check_ioam_header,
+	[TEST_OUT_BIT21]		= check_ioam_header,
+	[TEST_OUT_BIT22]		= check_ioam_header_and_data,
+	[TEST_OUT_FULL_SUPP_TRACE]	= check_ioam_header_and_data,
+	[TEST_IN_UNDEF_NS]		= check_ioam_header,
+	[TEST_IN_NO_ROOM]		= check_ioam_header,
+	[TEST_IN_OFLAG]		= check_ioam_header,
+	[TEST_IN_BIT0]			= check_ioam_header_and_data,
+	[TEST_IN_BIT1]			= check_ioam_header_and_data,
+	[TEST_IN_BIT2]			= check_ioam_header_and_data,
+	[TEST_IN_BIT3]			= check_ioam_header_and_data,
+	[TEST_IN_BIT4]			= check_ioam_header_and_data,
+	[TEST_IN_BIT5]			= check_ioam_header_and_data,
+	[TEST_IN_BIT6]			= check_ioam_header_and_data,
+	[TEST_IN_BIT7]			= check_ioam_header_and_data,
+	[TEST_IN_BIT8]			= check_ioam_header_and_data,
+	[TEST_IN_BIT9]			= check_ioam_header_and_data,
+	[TEST_IN_BIT10]		= check_ioam_header_and_data,
+	[TEST_IN_BIT11]		= check_ioam_header_and_data,
+	[TEST_IN_BIT12]		= check_ioam_header,
+	[TEST_IN_BIT13]		= check_ioam_header,
+	[TEST_IN_BIT14]		= check_ioam_header,
+	[TEST_IN_BIT15]		= check_ioam_header,
+	[TEST_IN_BIT16]		= check_ioam_header,
+	[TEST_IN_BIT17]		= check_ioam_header,
+	[TEST_IN_BIT18]		= check_ioam_header,
+	[TEST_IN_BIT19]		= check_ioam_header,
+	[TEST_IN_BIT20]		= check_ioam_header,
+	[TEST_IN_BIT21]		= check_ioam_header,
+	[TEST_IN_BIT22]		= check_ioam_header_and_data,
+	[TEST_IN_FULL_SUPP_TRACE]	= check_ioam_header_and_data,
+	[TEST_FWD_FULL_SUPP_TRACE]	= check_ioam_header_and_data,
+};
+
+int main(int argc, char **argv)
+{
+	int fd, size, hoplen, tid, ret = 1;
+	struct in6_addr src, dst;
+	struct ioam6_hdr *opt;
+	struct ipv6hdr *ip6h;
+	__u8 buffer[400], *p;
+	__u16 ioam_ns;
+	__u32 tr_type;
+
+	if (argc != 7)
+		goto out;
+
+	tid = str2id(argv[2]);
+	if (tid < 0 || !func[tid])
+		goto out;
+
+	if (inet_pton(AF_INET6, argv[3], &src) != 1 ||
+	    inet_pton(AF_INET6, argv[4], &dst) != 1)
+		goto out;
+
+	if (get_u32(&tr_type, argv[5], 16) ||
+	    get_u16(&ioam_ns, argv[6], 0))
+		goto out;
+
+	fd = socket(AF_PACKET, SOCK_DGRAM, __cpu_to_be16(ETH_P_IPV6));
+	if (!fd)
+		goto out;
+
+	if (setsockopt(fd, SOL_SOCKET, SO_BINDTODEVICE,
+		       argv[1], strlen(argv[1])))
+		goto close;
+
+recv:
+	size = recv(fd, buffer, sizeof(buffer), 0);
+	if (size <= 0)
+		goto close;
+
+	ip6h = (struct ipv6hdr *)buffer;
+
+	if (!ipv6_addr_equal(&ip6h->saddr, &src) ||
+	    !ipv6_addr_equal(&ip6h->daddr, &dst))
+		goto recv;
+
+	if (ip6h->nexthdr != IPPROTO_HOPOPTS)
+		goto close;
+
+	p = buffer + sizeof(*ip6h);
+	hoplen = (p[1] + 1) << 3;
+	p += sizeof(struct ipv6_hopopt_hdr);
+
+	while (hoplen > 0) {
+		opt = (struct ioam6_hdr *)p;
+
+		if (opt->opt_type == IPV6_TLV_IOAM &&
+		    opt->type == IOAM6_TYPE_PREALLOC) {
+			p += sizeof(*opt);
+			ret = func[tid](tid, (struct ioam6_trace_hdr *)p,
+					   tr_type, ioam_ns);
+			break;
+		}
+
+		p += opt->opt_len + 2;
+		hoplen -= opt->opt_len + 2;
+	}
+close:
+	close(fd);
+out:
+	return ret;
+}
diff --git a/tools/testing/selftests/net/mptcp/mptcp_join.sh b/tools/testing/selftests/net/mptcp/mptcp_join.sh
index f02f4de2f3a0..255793c5ac4f 100755
--- a/tools/testing/selftests/net/mptcp/mptcp_join.sh
+++ b/tools/testing/selftests/net/mptcp/mptcp_join.sh
@@ -3,8 +3,10 @@
 
 ret=0
 sin=""
+sinfail=""
 sout=""
 cin=""
+cinfail=""
 cinsent=""
 cout=""
 ksft_skip=4
@@ -76,6 +78,14 @@ init()
 	done
 }
 
+init_shapers()
+{
+	for i in `seq 1 4`; do
+		tc -n $ns1 qdisc add dev ns1eth$i root netem rate 20mbit delay 1
+		tc -n $ns2 qdisc add dev ns2eth$i root netem rate 20mbit delay 1
+	done
+}
+
 cleanup_partial()
 {
 	rm -f "$capout"
@@ -88,8 +98,8 @@ cleanup_partial()
 
 cleanup()
 {
-	rm -f "$cin" "$cout"
-	rm -f "$sin" "$sout" "$cinsent"
+	rm -f "$cin" "$cout" "$sinfail"
+	rm -f "$sin" "$sout" "$cinsent" "$cinfail"
 	cleanup_partial
 }
 
@@ -211,11 +221,15 @@ link_failure()
 {
 	ns="$1"
 
-	l=$((RANDOM%4))
-	l=$((l+1))
+	if [ -z "$FAILING_LINKS" ]; then
+		l=$((RANDOM%4))
+		FAILING_LINKS=$((l+1))
+	fi
 
-	veth="ns1eth$l"
-	ip -net "$ns" link set "$veth" down
+	for l in $FAILING_LINKS; do
+		veth="ns1eth$l"
+		ip -net "$ns" link set "$veth" down
+	done
 }
 
 # $1: IP address
@@ -280,10 +294,17 @@ do_transfer()
 		local_addr="0.0.0.0"
 	fi
 
-	timeout ${timeout_test} \
-		ip netns exec ${listener_ns} \
-			$mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \
-				${local_addr} < "$sin" > "$sout" &
+	if [ "$test_link_fail" -eq 2 ];then
+		timeout ${timeout_test} \
+			ip netns exec ${listener_ns} \
+				$mptcp_connect -t ${timeout_poll} -l -p $port -s ${cl_proto} \
+					${local_addr} < "$sinfail" > "$sout" &
+	else
+		timeout ${timeout_test} \
+			ip netns exec ${listener_ns} \
+				$mptcp_connect -t ${timeout_poll} -l -p $port -s ${srv_proto} \
+					${local_addr} < "$sin" > "$sout" &
+	fi
 	spid=$!
 
 	sleep 1
@@ -294,7 +315,7 @@ do_transfer()
 				$mptcp_connect -t ${timeout_poll} -p $port -s ${cl_proto} \
 					$connect_addr < "$cin" > "$cout" &
 	else
-		( cat "$cin" ; sleep 2; link_failure $listener_ns ; cat "$cin" ) | \
+		( cat "$cinfail" ; sleep 2; link_failure $listener_ns ; cat "$cinfail" ) | \
 			tee "$cinsent" | \
 			timeout ${timeout_test} \
 				ip netns exec ${connector_ns} \
@@ -323,17 +344,18 @@ do_transfer()
 		let rm_nr_ns1=-addr_nr_ns1
 		if [ $rm_nr_ns1 -lt 8 ]; then
 			counter=1
+			pos=1
 			dump=(`ip netns exec ${listener_ns} ./pm_nl_ctl dump`)
 			if [ ${#dump[@]} -gt 0 ]; then
-				id=${dump[1]}
 				sleep 1
 
 				while [ $counter -le $rm_nr_ns1 ]
 				do
+					id=${dump[$pos]}
 					ip netns exec ${listener_ns} ./pm_nl_ctl del $id
 					sleep 1
 					let counter+=1
-					let id+=1
+					let pos+=5
 				done
 			fi
 		elif [ $rm_nr_ns1 -eq 8 ]; then
@@ -345,6 +367,12 @@ do_transfer()
 		fi
 	fi
 
+	flags="subflow"
+	if [[ "${addr_nr_ns2}" = "fullmesh_"* ]]; then
+		flags="${flags},fullmesh"
+		addr_nr_ns2=${addr_nr_ns2:9}
+	fi
+
 	if [ $addr_nr_ns2 -gt 0 ]; then
 		let add_nr_ns2=addr_nr_ns2
 		counter=3
@@ -356,7 +384,7 @@ do_transfer()
 			else
 				addr="10.0.$counter.2"
 			fi
-			ip netns exec $ns2 ./pm_nl_ctl add $addr flags subflow
+			ip netns exec $ns2 ./pm_nl_ctl add $addr flags $flags
 			let counter+=1
 			let add_nr_ns2-=1
 		done
@@ -365,17 +393,18 @@ do_transfer()
 		let rm_nr_ns2=-addr_nr_ns2
 		if [ $rm_nr_ns2 -lt 8 ]; then
 			counter=1
+			pos=1
 			dump=(`ip netns exec ${connector_ns} ./pm_nl_ctl dump`)
 			if [ ${#dump[@]} -gt 0 ]; then
-				id=${dump[1]}
 				sleep 1
 
 				while [ $counter -le $rm_nr_ns2 ]
 				do
+					id=${dump[$pos]}
 					ip netns exec ${connector_ns} ./pm_nl_ctl del $id
 					sleep 1
 					let counter+=1
-					let id+=1
+					let pos+=5
 				done
 			fi
 		elif [ $rm_nr_ns2 -eq 8 ]; then
@@ -434,7 +463,11 @@ do_transfer()
 		return 1
 	fi
 
-	check_transfer $sin $cout "file received by client"
+	if [ "$test_link_fail" -eq 2 ];then
+		check_transfer $sinfail $cout "file received by client"
+	else
+		check_transfer $sin $cout "file received by client"
+	fi
 	retc=$?
 	if [ "$test_link_fail" -eq 0 ];then
 		check_transfer $cin $sout "file received by server"
@@ -477,29 +510,33 @@ run_tests()
 	lret=0
 	oldin=""
 
-	if [ "$test_linkfail" -eq 1 ];then
-		size=$((RANDOM%1024))
+	# create the input file for the failure test when
+	# the first failure test run
+	if [ "$test_linkfail" -ne 0 -a -z "$cinfail" ]; then
+		# the client file must be considerably larger
+		# of the maximum expected cwin value, or the
+		# link utilization will be not predicable
+		size=$((RANDOM%2))
 		size=$((size+1))
-		size=$((size*128))
+		size=$((size*8192))
+		size=$((size + ( $RANDOM % 8192) ))
 
-		oldin=$(mktemp)
-		cp "$cin" "$oldin"
-		make_file "$cin" "client" $size
+		cinfail=$(mktemp)
+		make_file "$cinfail" "client" $size
 	fi
 
-	do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP ${connect_addr} \
-		${test_linkfail} ${addr_nr_ns1} ${addr_nr_ns2} ${speed} ${bkup}
-	lret=$?
+	if [ "$test_linkfail" -eq 2 -a -z "$sinfail" ]; then
+		size=$((RANDOM%16))
+		size=$((size+1))
+		size=$((size*2048))
 
-	if [ "$test_linkfail" -eq 1 ];then
-		cp "$oldin" "$cin"
-		rm -f "$oldin"
+		sinfail=$(mktemp)
+		make_file "$sinfail" "server" $size
 	fi
 
-	if [ $lret -ne 0 ]; then
-		ret=$lret
-		return
-	fi
+	do_transfer ${listener_ns} ${connector_ns} MPTCP MPTCP ${connect_addr} \
+		${test_linkfail} ${addr_nr_ns1} ${addr_nr_ns2} ${speed} ${bkup}
+	lret=$?
 }
 
 chk_csum_nr()
@@ -541,6 +578,43 @@ chk_csum_nr()
 	fi
 }
 
+chk_fail_nr()
+{
+	local mp_fail_nr_tx=$1
+	local mp_fail_nr_rx=$2
+	local count
+	local dump_stats
+
+	printf "%-39s %s" " " "ftx"
+	count=`ip netns exec $ns1 nstat -as | grep MPTcpExtMPFailTx | awk '{print $2}'`
+	[ -z "$count" ] && count=0
+	if [ "$count" != "$mp_fail_nr_tx" ]; then
+		echo "[fail] got $count MP_FAIL[s] TX expected $mp_fail_nr_tx"
+		ret=1
+		dump_stats=1
+	else
+		echo -n "[ ok ]"
+	fi
+
+	echo -n " - frx   "
+	count=`ip netns exec $ns2 nstat -as | grep MPTcpExtMPFailRx | awk '{print $2}'`
+	[ -z "$count" ] && count=0
+	if [ "$count" != "$mp_fail_nr_rx" ]; then
+		echo "[fail] got $count MP_FAIL[s] RX expected $mp_fail_nr_rx"
+		ret=1
+		dump_stats=1
+	else
+		echo "[ ok ]"
+	fi
+
+	if [ "${dump_stats}" = 1 ]; then
+		echo Server ns stats
+		ip netns exec $ns1 nstat -as | grep MPTcp
+		echo Client ns stats
+		ip netns exec $ns2 nstat -as | grep MPTcp
+	fi
+}
+
 chk_join_nr()
 {
 	local msg="$1"
@@ -590,6 +664,47 @@ chk_join_nr()
 	fi
 	if [ $checksum -eq 1 ]; then
 		chk_csum_nr
+		chk_fail_nr 0 0
+	fi
+}
+
+# a negative value for 'stale_max' means no upper bound:
+# for bidirectional transfer, if one peer sleep for a while
+# - as these tests do - we can have a quite high number of
+# stale/recover conversions, proportional to
+# sleep duration/ MPTCP-level RTX interval.
+chk_stale_nr()
+{
+	local ns=$1
+	local stale_min=$2
+	local stale_max=$3
+	local stale_delta=$4
+	local dump_stats
+	local stale_nr
+	local recover_nr
+
+	printf "%-39s %-18s" " " "stale"
+	stale_nr=`ip netns exec $ns nstat -as | grep MPTcpExtSubflowStale | awk '{print $2}'`
+	[ -z "$stale_nr" ] && stale_nr=0
+	recover_nr=`ip netns exec $ns nstat -as | grep MPTcpExtSubflowRecover | awk '{print $2}'`
+	[ -z "$recover_nr" ] && recover_nr=0
+
+	if [ $stale_nr -lt $stale_min ] ||
+	   [ $stale_max -gt 0 -a $stale_nr -gt $stale_max ] ||
+	   [ $((stale_nr - $recover_nr)) -ne $stale_delta ]; then
+		echo "[fail] got $stale_nr stale[s] $recover_nr recover[s], " \
+		     " expected stale in range [$stale_min..$stale_max]," \
+		     " stale-recover delta $stale_delta "
+		ret=1
+		dump_stats=1
+	else
+		echo "[ ok ]"
+	fi
+
+	if [ "${dump_stats}" = 1 ]; then
+		echo $ns stats
+		ip netns exec $ns ip -s link show
+		ip netns exec $ns nstat -as | grep MPTcp
 	fi
 }
 
@@ -801,6 +916,27 @@ chk_prio_nr()
 	fi
 }
 
+chk_link_usage()
+{
+	local ns=$1
+	local link=$2
+	local out=$3
+	local expected_rate=$4
+	local tx_link=`ip netns exec $ns cat /sys/class/net/$link/statistics/tx_bytes`
+	local tx_total=`ls -l $out | awk '{print $5}'`
+	local tx_rate=$((tx_link * 100 / $tx_total))
+	local tolerance=5
+
+	printf "%-39s %-18s" " " "link usage"
+	if [ $tx_rate -lt $((expected_rate - $tolerance)) -o \
+	     $tx_rate -gt $((expected_rate + $tolerance)) ]; then
+		echo "[fail] got $tx_rate% usage, expected $expected_rate%"
+		ret=1
+	else
+		echo "[ ok ]"
+	fi
+}
+
 subflows_tests()
 {
 	reset
@@ -918,20 +1054,101 @@ signal_address_tests()
 	run_tests $ns1 $ns2 10.0.1.1
 	chk_join_nr "signal invalid addresses" 1 1 1
 	chk_add_nr 3 3
+
+	# signal addresses race test
+	reset
+	ip netns exec $ns1 ./pm_nl_ctl limits 4 4
+	ip netns exec $ns2 ./pm_nl_ctl limits 4 4
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.1.1 flags signal
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.3.1 flags signal
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.4.1 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.1.2 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 flags signal
+	run_tests $ns1 $ns2 10.0.1.1
+	chk_add_nr 4 4
 }
 
 link_failure_tests()
 {
 	# accept and use add_addr with additional subflows and link loss
 	reset
+
+	# without any b/w limit each veth could spool the packets and get
+	# them acked at xmit time, so that the corresponding subflow will
+	# have almost always no outstanding pkts, the scheduler will pick
+	# always the first subflow and we will have hard time testing
+	# active backup and link switch-over.
+	# Let's set some arbitrary (low) virtual link limits.
+	init_shapers
 	ip netns exec $ns1 ./pm_nl_ctl limits 0 3
-	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 dev ns1eth2 flags signal
 	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
-	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow
-	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 flags subflow
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 dev ns2eth3 flags subflow
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 dev ns2eth4 flags subflow
 	run_tests $ns1 $ns2 10.0.1.1 1
 	chk_join_nr "multiple flows, signal, link failure" 3 3 3
 	chk_add_nr 1 1
+	chk_stale_nr $ns2 1 5 1
+
+	# accept and use add_addr with additional subflows and link loss
+	# for bidirectional transfer
+	reset
+	init_shapers
+	ip netns exec $ns1 ./pm_nl_ctl limits 0 3
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 dev ns1eth2 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 dev ns2eth3 flags subflow
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.4.2 dev ns2eth4 flags subflow
+	run_tests $ns1 $ns2 10.0.1.1 2
+	chk_join_nr "multi flows, signal, bidi, link fail" 3 3 3
+	chk_add_nr 1 1
+	chk_stale_nr $ns2 1 -1 1
+
+	# 2 subflows plus 1 backup subflow with a lossy link, backup
+	# will never be used
+	reset
+	init_shapers
+	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 dev ns1eth2 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl limits 1 2
+	export FAILING_LINKS="1"
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 dev ns2eth3 flags subflow,backup
+	run_tests $ns1 $ns2 10.0.1.1 1
+	chk_join_nr "backup subflow unused, link failure" 2 2 2
+	chk_add_nr 1 1
+	chk_link_usage $ns2 ns2eth3 $cinsent 0
+
+	# 2 lossy links after half transfer, backup will get half of
+	# the traffic
+	reset
+	init_shapers
+	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 dev ns1eth2 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl limits 1 2
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 dev ns2eth3 flags subflow,backup
+	export FAILING_LINKS="1 2"
+	run_tests $ns1 $ns2 10.0.1.1 1
+	chk_join_nr "backup flow used, multi links fail" 2 2 2
+	chk_add_nr 1 1
+	chk_stale_nr $ns2 2 4 2
+	chk_link_usage $ns2 ns2eth3 $cinsent 50
+
+	# use a backup subflow with the first subflow on a lossy link
+	# for bidirectional transfer
+	reset
+	init_shapers
+	ip netns exec $ns1 ./pm_nl_ctl limits 0 2
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 dev ns1eth2 flags signal
+	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 dev ns2eth3 flags subflow,backup
+	run_tests $ns1 $ns2 10.0.1.1 2
+	chk_join_nr "backup flow used, bidi, link failure" 2 2 2
+	chk_add_nr 1 1
+	chk_stale_nr $ns2 1 -1 2
+	chk_link_usage $ns2 ns2eth3 $cinsent 50
 }
 
 add_addr_timeout_tests()
@@ -1530,6 +1747,55 @@ deny_join_id0_tests()
 	chk_join_nr "subflow and address allow join id0 2" 1 1 1
 }
 
+fullmesh_tests()
+{
+	# fullmesh 1
+	# 2 fullmesh addrs in ns2, added before the connection,
+	# 1 non-fullmesh addr in ns1, added during the connection.
+	reset
+	ip netns exec $ns1 ./pm_nl_ctl limits 0 4
+	ip netns exec $ns2 ./pm_nl_ctl limits 1 4
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.2.2 flags subflow,fullmesh
+	ip netns exec $ns2 ./pm_nl_ctl add 10.0.3.2 flags subflow,fullmesh
+	run_tests $ns1 $ns2 10.0.1.1 0 1 0 slow
+	chk_join_nr "fullmesh test 2x1" 4 4 4
+	chk_add_nr 1 1
+
+	# fullmesh 2
+	# 1 non-fullmesh addr in ns1, added before the connection,
+	# 1 fullmesh addr in ns2, added during the connection.
+	reset
+	ip netns exec $ns1 ./pm_nl_ctl limits 1 3
+	ip netns exec $ns2 ./pm_nl_ctl limits 1 3
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
+	run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_1 slow
+	chk_join_nr "fullmesh test 1x1" 3 3 3
+	chk_add_nr 1 1
+
+	# fullmesh 3
+	# 1 non-fullmesh addr in ns1, added before the connection,
+	# 2 fullmesh addrs in ns2, added during the connection.
+	reset
+	ip netns exec $ns1 ./pm_nl_ctl limits 2 5
+	ip netns exec $ns2 ./pm_nl_ctl limits 1 5
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
+	run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_2 slow
+	chk_join_nr "fullmesh test 1x2" 5 5 5
+	chk_add_nr 1 1
+
+	# fullmesh 4
+	# 1 non-fullmesh addr in ns1, added before the connection,
+	# 2 fullmesh addrs in ns2, added during the connection,
+	# limit max_subflows to 4.
+	reset
+	ip netns exec $ns1 ./pm_nl_ctl limits 2 4
+	ip netns exec $ns2 ./pm_nl_ctl limits 1 4
+	ip netns exec $ns1 ./pm_nl_ctl add 10.0.2.1 flags signal
+	run_tests $ns1 $ns2 10.0.1.1 0 0 fullmesh_2 slow
+	chk_join_nr "fullmesh test 1x2, limited" 4 4 4
+	chk_add_nr 1 1
+}
+
 all_tests()
 {
 	subflows_tests
@@ -1545,6 +1811,7 @@ all_tests()
 	syncookies_tests
 	checksum_tests
 	deny_join_id0_tests
+	fullmesh_tests
 }
 
 usage()
@@ -1563,6 +1830,7 @@ usage()
 	echo "  -k syncookies_tests"
 	echo "  -S checksum_tests"
 	echo "  -d deny_join_id0_tests"
+	echo "  -m fullmesh_tests"
 	echo "  -c capture pcap files"
 	echo "  -C enable data checksum"
 	echo "  -h help"
@@ -1598,7 +1866,7 @@ if [ $do_all_tests -eq 1 ]; then
 	exit $ret
 fi
 
-while getopts 'fsltra64bpkdchCS' opt; do
+while getopts 'fsltra64bpkdmchCS' opt; do
 	case $opt in
 		f)
 			subflows_tests
@@ -1639,6 +1907,9 @@ while getopts 'fsltra64bpkdchCS' opt; do
 		d)
 			deny_join_id0_tests
 			;;
+		m)
+			fullmesh_tests
+			;;
 		c)
 			;;
 		C)
diff --git a/tools/testing/selftests/net/mptcp/pm_nl_ctl.c b/tools/testing/selftests/net/mptcp/pm_nl_ctl.c
index 115decfdc1ef..354784512748 100644
--- a/tools/testing/selftests/net/mptcp/pm_nl_ctl.c
+++ b/tools/testing/selftests/net/mptcp/pm_nl_ctl.c
@@ -25,7 +25,7 @@
 static void syntax(char *argv[])
 {
 	fprintf(stderr, "%s add|get|set|del|flush|dump|accept [<args>]\n", argv[0]);
-	fprintf(stderr, "\tadd [flags signal|subflow|backup] [id <nr>] [dev <name>] <ip>\n");
+	fprintf(stderr, "\tadd [flags signal|subflow|backup|fullmesh] [id <nr>] [dev <name>] <ip>\n");
 	fprintf(stderr, "\tdel <id> [<ip>]\n");
 	fprintf(stderr, "\tget <id>\n");
 	fprintf(stderr, "\tset <ip> [flags backup|nobackup]\n");
@@ -236,11 +236,18 @@ int add_addr(int fd, int pm_family, int argc, char *argv[])
 					flags |= MPTCP_PM_ADDR_FLAG_SIGNAL;
 				else if (!strcmp(tok, "backup"))
 					flags |= MPTCP_PM_ADDR_FLAG_BACKUP;
+				else if (!strcmp(tok, "fullmesh"))
+					flags |= MPTCP_PM_ADDR_FLAG_FULLMESH;
 				else
 					error(1, errno,
 					      "unknown flag %s", argv[arg]);
 			}
 
+			if (flags & MPTCP_PM_ADDR_FLAG_SIGNAL &&
+			    flags & MPTCP_PM_ADDR_FLAG_FULLMESH) {
+				error(1, errno, "error flag fullmesh");
+			}
+
 			rta = (void *)(data + off);
 			rta->rta_type = MPTCP_PM_ADDR_ATTR_FLAGS;
 			rta->rta_len = RTA_LENGTH(4);
@@ -422,6 +429,13 @@ static void print_addr(struct rtattr *attrs, int len)
 					printf(",");
 			}
 
+			if (flags & MPTCP_PM_ADDR_FLAG_FULLMESH) {
+				printf("fullmesh");
+				flags &= ~MPTCP_PM_ADDR_FLAG_FULLMESH;
+				if (flags)
+					printf(",");
+			}
+
 			/* bump unknown flags, if any */
 			if (flags)
 				printf("0x%x", flags);
diff --git a/tools/testing/selftests/net/psock_fanout.c b/tools/testing/selftests/net/psock_fanout.c
index db4521335722..3653d6468c67 100644
--- a/tools/testing/selftests/net/psock_fanout.c
+++ b/tools/testing/selftests/net/psock_fanout.c
@@ -111,8 +111,8 @@ static int sock_fanout_open(uint16_t typeflags, uint16_t group_id)
 static void sock_fanout_set_cbpf(int fd)
 {
 	struct sock_filter bpf_filter[] = {
-		BPF_STMT(BPF_LD+BPF_B+BPF_ABS, 80),	      /* ldb [80] */
-		BPF_STMT(BPF_RET+BPF_A, 0),		      /* ret A */
+		BPF_STMT(BPF_LD | BPF_B | BPF_ABS, 80),	      /* ldb [80] */
+		BPF_STMT(BPF_RET | BPF_A, 0),		      /* ret A */
 	};
 	struct sock_fprog bpf_prog;
 
diff --git a/tools/testing/selftests/net/psock_snd.sh b/tools/testing/selftests/net/psock_snd.sh
index 170be65e0816..1cbfeb5052ec 100755
--- a/tools/testing/selftests/net/psock_snd.sh
+++ b/tools/testing/selftests/net/psock_snd.sh
@@ -86,9 +86,6 @@ echo "raw truncate hlen - 1 (expected to fail: EINVAL)"
 echo "raw gso min size"
 ./in_netns.sh ./psock_snd -v -c -g -l "${mss_exceeds}"
 
-echo "raw gso min size - 1 (expected to fail)"
-(! ./in_netns.sh ./psock_snd -v -c -g -l "${mss}")
-
 echo "raw gso max size"
 ./in_netns.sh ./psock_snd -v -c -g -l "${max_mss}"
 
diff --git a/tools/testing/selftests/net/run_afpackettests b/tools/testing/selftests/net/run_afpackettests
index 8b42e8b04e0f..a59cb6a3c4f5 100755
--- a/tools/testing/selftests/net/run_afpackettests
+++ b/tools/testing/selftests/net/run_afpackettests
@@ -1,9 +1,12 @@
 #!/bin/sh
 # SPDX-License-Identifier: GPL-2.0
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
 if [ $(id -u) != 0 ]; then
 	echo $msg must be run as root >&2
-	exit 0
+	exit $ksft_skip
 fi
 
 ret=0
diff --git a/tools/testing/selftests/net/setup_loopback.sh b/tools/testing/selftests/net/setup_loopback.sh
new file mode 100755
index 000000000000..e57bbfbc5208
--- /dev/null
+++ b/tools/testing/selftests/net/setup_loopback.sh
@@ -0,0 +1,118 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+readonly FLUSH_PATH="/sys/class/net/${dev}/gro_flush_timeout"
+readonly IRQ_PATH="/sys/class/net/${dev}/napi_defer_hard_irqs"
+readonly FLUSH_TIMEOUT="$(< ${FLUSH_PATH})"
+readonly HARD_IRQS="$(< ${IRQ_PATH})"
+
+netdev_check_for_carrier() {
+	local -r dev="$1"
+
+	for i in {1..5}; do
+		carrier="$(cat /sys/class/net/${dev}/carrier)"
+		if [[ "${carrier}" -ne 1 ]] ; then
+			echo "carrier not ready yet..." >&2
+			sleep 1
+		else
+			echo "carrier ready" >&2
+			break
+		fi
+	done
+	echo "${carrier}"
+}
+
+# Assumes that there is no existing ipvlan device on the physical device
+setup_loopback_environment() {
+	local dev="$1"
+
+	# Fail hard if cannot turn on loopback mode for current NIC
+	ethtool -K "${dev}" loopback on || exit 1
+	sleep 1
+
+	# Check for the carrier
+	carrier=$(netdev_check_for_carrier ${dev})
+	if [[ "${carrier}" -ne 1 ]] ; then
+		echo "setup_loopback_environment failed"
+		exit 1
+	fi
+}
+
+setup_macvlan_ns(){
+	local -r link_dev="$1"
+	local -r ns_name="$2"
+	local -r ns_dev="$3"
+	local -r ns_mac="$4"
+	local -r addr="$5"
+
+	ip link add link "${link_dev}" dev "${ns_dev}" \
+		address "${ns_mac}" type macvlan
+	exit_code=$?
+	if [[ "${exit_code}" -ne 0 ]]; then
+		echo "setup_macvlan_ns failed"
+		exit $exit_code
+	fi
+
+	[[ -e /var/run/netns/"${ns_name}" ]] || ip netns add "${ns_name}"
+	ip link set dev "${ns_dev}" netns "${ns_name}"
+	ip -netns "${ns_name}" link set dev "${ns_dev}" up
+	if [[ -n "${addr}" ]]; then
+		ip -netns "${ns_name}" addr add dev "${ns_dev}" "${addr}"
+	fi
+
+	sleep 1
+}
+
+cleanup_macvlan_ns(){
+	while (( $# >= 2 )); do
+		ns_name="$1"
+		ns_dev="$2"
+		ip -netns "${ns_name}" link del dev "${ns_dev}"
+		ip netns del "${ns_name}"
+		shift 2
+	done
+}
+
+cleanup_loopback(){
+	local -r dev="$1"
+
+	ethtool -K "${dev}" loopback off
+	sleep 1
+
+	# Check for the carrier
+	carrier=$(netdev_check_for_carrier ${dev})
+	if [[ "${carrier}" -ne 1 ]] ; then
+		echo "setup_loopback_environment failed"
+		exit 1
+	fi
+}
+
+setup_interrupt() {
+	# Use timer on  host to trigger the network stack
+	# Also disable device interrupt to not depend on NIC interrupt
+	# Reduce test flakiness caused by unexpected interrupts
+	echo 100000 >"${FLUSH_PATH}"
+	echo 50 >"${IRQ_PATH}"
+}
+
+setup_ns() {
+	# Set up server_ns namespace and client_ns namespace
+	setup_macvlan_ns "${dev}" server_ns server "${SERVER_MAC}"
+	setup_macvlan_ns "${dev}" client_ns client "${CLIENT_MAC}"
+}
+
+cleanup_ns() {
+	cleanup_macvlan_ns server_ns server client_ns client
+}
+
+setup() {
+	setup_loopback_environment "${dev}"
+	setup_interrupt
+}
+
+cleanup() {
+	cleanup_loopback "${dev}"
+
+	echo "${FLUSH_TIMEOUT}" >"${FLUSH_PATH}"
+	echo "${HARD_IRQS}" >"${IRQ_PATH}"
+}
diff --git a/tools/testing/selftests/net/setup_veth.sh b/tools/testing/selftests/net/setup_veth.sh
new file mode 100644
index 000000000000..1003ddf7b3b2
--- /dev/null
+++ b/tools/testing/selftests/net/setup_veth.sh
@@ -0,0 +1,41 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+setup_veth_ns() {
+	local -r link_dev="$1"
+	local -r ns_name="$2"
+	local -r ns_dev="$3"
+	local -r ns_mac="$4"
+
+	[[ -e /var/run/netns/"${ns_name}" ]] || ip netns add "${ns_name}"
+	echo 100000 > "/sys/class/net/${ns_dev}/gro_flush_timeout"
+	ip link set dev "${ns_dev}" netns "${ns_name}" mtu 65535
+	ip -netns "${ns_name}" link set dev "${ns_dev}" up
+
+	ip netns exec "${ns_name}" ethtool -K "${ns_dev}" gro on tso off
+}
+
+setup_ns() {
+	# Set up server_ns namespace and client_ns namespace
+	ip link add name server type veth peer name client
+
+	setup_veth_ns "${dev}" server_ns server "${SERVER_MAC}"
+	setup_veth_ns "${dev}" client_ns client "${CLIENT_MAC}"
+}
+
+cleanup_ns() {
+	local ns_name
+
+	for ns_name in client_ns server_ns; do
+		[[ -e /var/run/netns/"${ns_name}" ]] && ip netns del "${ns_name}"
+	done
+}
+
+setup() {
+	# no global init setup step needed
+	:
+}
+
+cleanup() {
+	cleanup_ns
+}
diff --git a/tools/testing/selftests/net/srv6_end_dt46_l3vpn_test.sh b/tools/testing/selftests/net/srv6_end_dt46_l3vpn_test.sh
index 75ada17ac061..aebaab8ce44c 100755
--- a/tools/testing/selftests/net/srv6_end_dt46_l3vpn_test.sh
+++ b/tools/testing/selftests/net/srv6_end_dt46_l3vpn_test.sh
@@ -193,6 +193,9 @@
 # +---------------------------------------------------+
 #
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
 readonly LOCALSID_TABLE_ID=90
 readonly IPv6_RT_NETWORK=fd00
 readonly IPv6_HS_NETWORK=cafe
@@ -543,18 +546,18 @@ host_vpn_isolation_tests()
 
 if [ "$(id -u)" -ne 0 ];then
 	echo "SKIP: Need root privileges"
-	exit 0
+	exit $ksft_skip
 fi
 
 if [ ! -x "$(command -v ip)" ]; then
 	echo "SKIP: Could not run test without ip tool"
-	exit 0
+	exit $ksft_skip
 fi
 
 modprobe vrf &>/dev/null
 if [ ! -e /proc/sys/net/vrf/strict_mode ]; then
         echo "SKIP: vrf sysctl does not exist"
-        exit 0
+        exit $ksft_skip
 fi
 
 cleanup &>/dev/null
diff --git a/tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh b/tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh
index ad7a9fc59934..1003119773e5 100755
--- a/tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh
+++ b/tools/testing/selftests/net/srv6_end_dt4_l3vpn_test.sh
@@ -163,6 +163,9 @@
 # +---------------------------------------------------+
 #
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
 readonly LOCALSID_TABLE_ID=90
 readonly IPv6_RT_NETWORK=fd00
 readonly IPv4_HS_NETWORK=10.0.0
@@ -464,18 +467,18 @@ host_vpn_isolation_tests()
 
 if [ "$(id -u)" -ne 0 ];then
 	echo "SKIP: Need root privileges"
-	exit 0
+	exit $ksft_skip
 fi
 
 if [ ! -x "$(command -v ip)" ]; then
 	echo "SKIP: Could not run test without ip tool"
-	exit 0
+	exit $ksft_skip
 fi
 
 modprobe vrf &>/dev/null
 if [ ! -e /proc/sys/net/vrf/strict_mode ]; then
         echo "SKIP: vrf sysctl does not exist"
-        exit 0
+        exit $ksft_skip
 fi
 
 cleanup &>/dev/null
diff --git a/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh b/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh
index 68708f5e26a0..b9b06ef80d88 100755
--- a/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh
+++ b/tools/testing/selftests/net/srv6_end_dt6_l3vpn_test.sh
@@ -164,6 +164,9 @@
 # +---------------------------------------------------+
 #
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
 readonly LOCALSID_TABLE_ID=90
 readonly IPv6_RT_NETWORK=fd00
 readonly IPv6_HS_NETWORK=cafe
@@ -472,18 +475,18 @@ host_vpn_isolation_tests()
 
 if [ "$(id -u)" -ne 0 ];then
 	echo "SKIP: Need root privileges"
-	exit 0
+	exit $ksft_skip
 fi
 
 if [ ! -x "$(command -v ip)" ]; then
 	echo "SKIP: Could not run test without ip tool"
-	exit 0
+	exit $ksft_skip
 fi
 
 modprobe vrf &>/dev/null
 if [ ! -e /proc/sys/net/vrf/strict_mode ]; then
         echo "SKIP: vrf sysctl does not exist"
-        exit 0
+        exit $ksft_skip
 fi
 
 cleanup &>/dev/null
diff --git a/tools/testing/selftests/net/toeplitz.c b/tools/testing/selftests/net/toeplitz.c
new file mode 100644
index 000000000000..710ac956bdb3
--- /dev/null
+++ b/tools/testing/selftests/net/toeplitz.c
@@ -0,0 +1,585 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Toeplitz test
+ *
+ * 1. Read packets and their rx_hash using PF_PACKET/TPACKET_V3
+ * 2. Compute the rx_hash in software based on the packet contents
+ * 3. Compare the two
+ *
+ * Optionally, either '-C $rx_irq_cpu_list' or '-r $rps_bitmap' may be given.
+ *
+ * If '-C $rx_irq_cpu_list' is given, also
+ *
+ * 4. Identify the cpu on which the packet arrived with PACKET_FANOUT_CPU
+ * 5. Compute the rxqueue that RSS would select based on this rx_hash
+ * 6. Using the $rx_irq_cpu_list map, identify the arriving cpu based on rxq irq
+ * 7. Compare the cpus from 4 and 6
+ *
+ * Else if '-r $rps_bitmap' is given, also
+ *
+ * 4. Identify the cpu on which the packet arrived with PACKET_FANOUT_CPU
+ * 5. Compute the cpu that RPS should select based on rx_hash and $rps_bitmap
+ * 6. Compare the cpus from 4 and 5
+ */
+
+#define _GNU_SOURCE
+
+#include <arpa/inet.h>
+#include <errno.h>
+#include <error.h>
+#include <fcntl.h>
+#include <getopt.h>
+#include <linux/filter.h>
+#include <linux/if_ether.h>
+#include <linux/if_packet.h>
+#include <net/if.h>
+#include <netdb.h>
+#include <netinet/ip.h>
+#include <netinet/ip6.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
+#include <poll.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/mman.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/sysinfo.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#define TOEPLITZ_KEY_MIN_LEN	40
+#define TOEPLITZ_KEY_MAX_LEN	60
+
+#define TOEPLITZ_STR_LEN(K)	(((K) * 3) - 1)	/* hex encoded: AA:BB:CC:...:ZZ */
+#define TOEPLITZ_STR_MIN_LEN	TOEPLITZ_STR_LEN(TOEPLITZ_KEY_MIN_LEN)
+#define TOEPLITZ_STR_MAX_LEN	TOEPLITZ_STR_LEN(TOEPLITZ_KEY_MAX_LEN)
+
+#define FOUR_TUPLE_MAX_LEN	((sizeof(struct in6_addr) * 2) + (sizeof(uint16_t) * 2))
+
+#define RSS_MAX_CPUS (1 << 16)	/* real constraint is PACKET_FANOUT_MAX */
+
+#define RPS_MAX_CPUS 16UL	/* must be a power of 2 */
+
+/* configuration options (cmdline arguments) */
+static uint16_t cfg_dport =	8000;
+static int cfg_family =		AF_INET6;
+static char *cfg_ifname =	"eth0";
+static int cfg_num_queues;
+static int cfg_num_rps_cpus;
+static bool cfg_sink;
+static int cfg_type =		SOCK_STREAM;
+static int cfg_timeout_msec =	1000;
+static bool cfg_verbose;
+
+/* global vars */
+static int num_cpus;
+static int ring_block_nr;
+static int ring_block_sz;
+
+/* stats */
+static int frames_received;
+static int frames_nohash;
+static int frames_error;
+
+#define log_verbose(args...)	do { if (cfg_verbose) fprintf(stderr, args); } while (0)
+
+/* tpacket ring */
+struct ring_state {
+	int fd;
+	char *mmap;
+	int idx;
+	int cpu;
+};
+
+static unsigned int rx_irq_cpus[RSS_MAX_CPUS];	/* map from rxq to cpu */
+static int rps_silo_to_cpu[RPS_MAX_CPUS];
+static unsigned char toeplitz_key[TOEPLITZ_KEY_MAX_LEN];
+static struct ring_state rings[RSS_MAX_CPUS];
+
+static inline uint32_t toeplitz(const unsigned char *four_tuple,
+				const unsigned char *key)
+{
+	int i, bit, ret = 0;
+	uint32_t key32;
+
+	key32 = ntohl(*((uint32_t *)key));
+	key += 4;
+
+	for (i = 0; i < FOUR_TUPLE_MAX_LEN; i++) {
+		for (bit = 7; bit >= 0; bit--) {
+			if (four_tuple[i] & (1 << bit))
+				ret ^= key32;
+
+			key32 <<= 1;
+			key32 |= !!(key[0] & (1 << bit));
+		}
+		key++;
+	}
+
+	return ret;
+}
+
+/* Compare computed cpu with arrival cpu from packet_fanout_cpu */
+static void verify_rss(uint32_t rx_hash, int cpu)
+{
+	int queue = rx_hash % cfg_num_queues;
+
+	log_verbose(" rxq %d (cpu %d)", queue, rx_irq_cpus[queue]);
+	if (rx_irq_cpus[queue] != cpu) {
+		log_verbose(". error: rss cpu mismatch (%d)", cpu);
+		frames_error++;
+	}
+}
+
+static void verify_rps(uint64_t rx_hash, int cpu)
+{
+	int silo = (rx_hash * cfg_num_rps_cpus) >> 32;
+
+	log_verbose(" silo %d (cpu %d)", silo, rps_silo_to_cpu[silo]);
+	if (rps_silo_to_cpu[silo] != cpu) {
+		log_verbose(". error: rps cpu mismatch (%d)", cpu);
+		frames_error++;
+	}
+}
+
+static void log_rxhash(int cpu, uint32_t rx_hash,
+		       const char *addrs, int addr_len)
+{
+	char saddr[INET6_ADDRSTRLEN], daddr[INET6_ADDRSTRLEN];
+	uint16_t *ports;
+
+	if (!inet_ntop(cfg_family, addrs, saddr, sizeof(saddr)) ||
+	    !inet_ntop(cfg_family, addrs + addr_len, daddr, sizeof(daddr)))
+		error(1, 0, "address parse error");
+
+	ports = (void *)addrs + (addr_len * 2);
+	log_verbose("cpu %d: rx_hash 0x%08x [saddr %s daddr %s sport %02hu dport %02hu]",
+		    cpu, rx_hash, saddr, daddr,
+		    ntohs(ports[0]), ntohs(ports[1]));
+}
+
+/* Compare computed rxhash with rxhash received from tpacket_v3 */
+static void verify_rxhash(const char *pkt, uint32_t rx_hash, int cpu)
+{
+	unsigned char four_tuple[FOUR_TUPLE_MAX_LEN] = {0};
+	uint32_t rx_hash_sw;
+	const char *addrs;
+	int addr_len;
+
+	if (cfg_family == AF_INET) {
+		addr_len = sizeof(struct in_addr);
+		addrs = pkt + offsetof(struct iphdr, saddr);
+	} else {
+		addr_len = sizeof(struct in6_addr);
+		addrs = pkt + offsetof(struct ip6_hdr, ip6_src);
+	}
+
+	memcpy(four_tuple, addrs, (addr_len * 2) + (sizeof(uint16_t) * 2));
+	rx_hash_sw = toeplitz(four_tuple, toeplitz_key);
+
+	if (cfg_verbose)
+		log_rxhash(cpu, rx_hash, addrs, addr_len);
+
+	if (rx_hash != rx_hash_sw) {
+		log_verbose(" != expected 0x%x\n", rx_hash_sw);
+		frames_error++;
+		return;
+	}
+
+	log_verbose(" OK");
+	if (cfg_num_queues)
+		verify_rss(rx_hash, cpu);
+	else if (cfg_num_rps_cpus)
+		verify_rps(rx_hash, cpu);
+	log_verbose("\n");
+}
+
+static char *recv_frame(const struct ring_state *ring, char *frame)
+{
+	struct tpacket3_hdr *hdr = (void *)frame;
+
+	if (hdr->hv1.tp_rxhash)
+		verify_rxhash(frame + hdr->tp_net, hdr->hv1.tp_rxhash,
+			      ring->cpu);
+	else
+		frames_nohash++;
+
+	return frame + hdr->tp_next_offset;
+}
+
+/* A single TPACKET_V3 block can hold multiple frames */
+static void recv_block(struct ring_state *ring)
+{
+	struct tpacket_block_desc *block;
+	char *frame;
+	int i;
+
+	block = (void *)(ring->mmap + ring->idx * ring_block_sz);
+	if (!(block->hdr.bh1.block_status & TP_STATUS_USER))
+		return;
+
+	frame = (char *)block;
+	frame += block->hdr.bh1.offset_to_first_pkt;
+
+	for (i = 0; i < block->hdr.bh1.num_pkts; i++) {
+		frame = recv_frame(ring, frame);
+		frames_received++;
+	}
+
+	block->hdr.bh1.block_status = TP_STATUS_KERNEL;
+	ring->idx = (ring->idx + 1) % ring_block_nr;
+}
+
+/* simple test: sleep once unconditionally and then process all rings */
+static void process_rings(void)
+{
+	int i;
+
+	usleep(1000 * cfg_timeout_msec);
+
+	for (i = 0; i < num_cpus; i++)
+		recv_block(&rings[i]);
+
+	fprintf(stderr, "count: pass=%u nohash=%u fail=%u\n",
+		frames_received - frames_nohash - frames_error,
+		frames_nohash, frames_error);
+}
+
+static char *setup_ring(int fd)
+{
+	struct tpacket_req3 req3 = {0};
+	void *ring;
+
+	req3.tp_retire_blk_tov = cfg_timeout_msec;
+	req3.tp_feature_req_word = TP_FT_REQ_FILL_RXHASH;
+
+	req3.tp_frame_size = 2048;
+	req3.tp_frame_nr = 1 << 10;
+	req3.tp_block_nr = 2;
+
+	req3.tp_block_size = req3.tp_frame_size * req3.tp_frame_nr;
+	req3.tp_block_size /= req3.tp_block_nr;
+
+	if (setsockopt(fd, SOL_PACKET, PACKET_RX_RING, &req3, sizeof(req3)))
+		error(1, errno, "setsockopt PACKET_RX_RING");
+
+	ring_block_sz = req3.tp_block_size;
+	ring_block_nr = req3.tp_block_nr;
+
+	ring = mmap(0, req3.tp_block_size * req3.tp_block_nr,
+		    PROT_READ | PROT_WRITE,
+		    MAP_SHARED | MAP_LOCKED | MAP_POPULATE, fd, 0);
+	if (ring == MAP_FAILED)
+		error(1, 0, "mmap failed");
+
+	return ring;
+}
+
+static void __set_filter(int fd, int off_proto, uint8_t proto, int off_dport)
+{
+	struct sock_filter filter[] = {
+		BPF_STMT(BPF_LD  + BPF_B   + BPF_ABS, SKF_AD_OFF + SKF_AD_PKTTYPE),
+		BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, PACKET_HOST, 0, 4),
+		BPF_STMT(BPF_LD  + BPF_B   + BPF_ABS, off_proto),
+		BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, proto, 0, 2),
+		BPF_STMT(BPF_LD  + BPF_H   + BPF_ABS, off_dport),
+		BPF_JUMP(BPF_JMP + BPF_JEQ + BPF_K, cfg_dport, 1, 0),
+		BPF_STMT(BPF_RET + BPF_K, 0),
+		BPF_STMT(BPF_RET + BPF_K, 0xFFFF),
+	};
+	struct sock_fprog prog = {};
+
+	prog.filter = filter;
+	prog.len = sizeof(filter) / sizeof(struct sock_filter);
+	if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &prog, sizeof(prog)))
+		error(1, errno, "setsockopt filter");
+}
+
+/* filter on transport protocol and destination port */
+static void set_filter(int fd)
+{
+	const int off_dport = offsetof(struct tcphdr, dest);	/* same for udp */
+	uint8_t proto;
+
+	proto = cfg_type == SOCK_STREAM ? IPPROTO_TCP : IPPROTO_UDP;
+	if (cfg_family == AF_INET)
+		__set_filter(fd, offsetof(struct iphdr, protocol), proto,
+			     sizeof(struct iphdr) + off_dport);
+	else
+		__set_filter(fd, offsetof(struct ip6_hdr, ip6_nxt), proto,
+			     sizeof(struct ip6_hdr) + off_dport);
+}
+
+/* drop everything: used temporarily during setup */
+static void set_filter_null(int fd)
+{
+	struct sock_filter filter[] = {
+		BPF_STMT(BPF_RET + BPF_K, 0),
+	};
+	struct sock_fprog prog = {};
+
+	prog.filter = filter;
+	prog.len = sizeof(filter) / sizeof(struct sock_filter);
+	if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &prog, sizeof(prog)))
+		error(1, errno, "setsockopt filter");
+}
+
+static int create_ring(char **ring)
+{
+	struct fanout_args args = {
+		.id = 1,
+		.type_flags = PACKET_FANOUT_CPU,
+		.max_num_members = RSS_MAX_CPUS
+	};
+	struct sockaddr_ll ll = { 0 };
+	int fd, val;
+
+	fd = socket(PF_PACKET, SOCK_DGRAM, 0);
+	if (fd == -1)
+		error(1, errno, "socket creation failed");
+
+	val = TPACKET_V3;
+	if (setsockopt(fd, SOL_PACKET, PACKET_VERSION, &val, sizeof(val)))
+		error(1, errno, "setsockopt PACKET_VERSION");
+	*ring = setup_ring(fd);
+
+	/* block packets until all rings are added to the fanout group:
+	 * else packets can arrive during setup and get misclassified
+	 */
+	set_filter_null(fd);
+
+	ll.sll_family = AF_PACKET;
+	ll.sll_ifindex = if_nametoindex(cfg_ifname);
+	ll.sll_protocol = cfg_family == AF_INET ? htons(ETH_P_IP) :
+						  htons(ETH_P_IPV6);
+	if (bind(fd, (void *)&ll, sizeof(ll)))
+		error(1, errno, "bind");
+
+	/* must come after bind: verifies all programs in group match */
+	if (setsockopt(fd, SOL_PACKET, PACKET_FANOUT, &args, sizeof(args))) {
+		/* on failure, retry using old API if that is sufficient:
+		 * it has a hard limit of 256 sockets, so only try if
+		 * (a) only testing rxhash, not RSS or (b) <= 256 cpus.
+		 * in this API, the third argument is left implicit.
+		 */
+		if (cfg_num_queues || num_cpus > 256 ||
+		    setsockopt(fd, SOL_PACKET, PACKET_FANOUT,
+			       &args, sizeof(uint32_t)))
+			error(1, errno, "setsockopt PACKET_FANOUT cpu");
+	}
+
+	return fd;
+}
+
+/* setup inet(6) socket to blackhole the test traffic, if arg '-s' */
+static int setup_sink(void)
+{
+	int fd, val;
+
+	fd = socket(cfg_family, cfg_type, 0);
+	if (fd == -1)
+		error(1, errno, "socket %d.%d", cfg_family, cfg_type);
+
+	val = 1 << 20;
+	if (setsockopt(fd, SOL_SOCKET, SO_RCVBUFFORCE, &val, sizeof(val)))
+		error(1, errno, "setsockopt rcvbuf");
+
+	return fd;
+}
+
+static void setup_rings(void)
+{
+	int i;
+
+	for (i = 0; i < num_cpus; i++) {
+		rings[i].cpu = i;
+		rings[i].fd = create_ring(&rings[i].mmap);
+	}
+
+	/* accept packets once all rings in the fanout group are up */
+	for (i = 0; i < num_cpus; i++)
+		set_filter(rings[i].fd);
+}
+
+static void cleanup_rings(void)
+{
+	int i;
+
+	for (i = 0; i < num_cpus; i++) {
+		if (munmap(rings[i].mmap, ring_block_nr * ring_block_sz))
+			error(1, errno, "munmap");
+		if (close(rings[i].fd))
+			error(1, errno, "close");
+	}
+}
+
+static void parse_cpulist(const char *arg)
+{
+	do {
+		rx_irq_cpus[cfg_num_queues++] = strtol(arg, NULL, 10);
+
+		arg = strchr(arg, ',');
+		if (!arg)
+			break;
+		arg++;			// skip ','
+	} while (1);
+}
+
+static void show_cpulist(void)
+{
+	int i;
+
+	for (i = 0; i < cfg_num_queues; i++)
+		fprintf(stderr, "rxq %d: cpu %d\n", i, rx_irq_cpus[i]);
+}
+
+static void show_silos(void)
+{
+	int i;
+
+	for (i = 0; i < cfg_num_rps_cpus; i++)
+		fprintf(stderr, "silo %d: cpu %d\n", i, rps_silo_to_cpu[i]);
+}
+
+static void parse_toeplitz_key(const char *str, int slen, unsigned char *key)
+{
+	int i, ret, off;
+
+	if (slen < TOEPLITZ_STR_MIN_LEN ||
+	    slen > TOEPLITZ_STR_MAX_LEN + 1)
+		error(1, 0, "invalid toeplitz key");
+
+	for (i = 0, off = 0; off < slen; i++, off += 3) {
+		ret = sscanf(str + off, "%hhx", &key[i]);
+		if (ret != 1)
+			error(1, 0, "key parse error at %d off %d len %d",
+			      i, off, slen);
+	}
+}
+
+static void parse_rps_bitmap(const char *arg)
+{
+	unsigned long bitmap;
+	int i;
+
+	bitmap = strtoul(arg, NULL, 0);
+
+	if (bitmap & ~(RPS_MAX_CPUS - 1))
+		error(1, 0, "rps bitmap 0x%lx out of bounds 0..%lu",
+		      bitmap, RPS_MAX_CPUS - 1);
+
+	for (i = 0; i < RPS_MAX_CPUS; i++)
+		if (bitmap & 1UL << i)
+			rps_silo_to_cpu[cfg_num_rps_cpus++] = i;
+}
+
+static void parse_opts(int argc, char **argv)
+{
+	static struct option long_options[] = {
+	    {"dport",	required_argument, 0, 'd'},
+	    {"cpus",	required_argument, 0, 'C'},
+	    {"key",	required_argument, 0, 'k'},
+	    {"iface",	required_argument, 0, 'i'},
+	    {"ipv4",	no_argument, 0, '4'},
+	    {"ipv6",	no_argument, 0, '6'},
+	    {"sink",	no_argument, 0, 's'},
+	    {"tcp",	no_argument, 0, 't'},
+	    {"timeout",	required_argument, 0, 'T'},
+	    {"udp",	no_argument, 0, 'u'},
+	    {"verbose",	no_argument, 0, 'v'},
+	    {"rps",	required_argument, 0, 'r'},
+	    {0, 0, 0, 0}
+	};
+	bool have_toeplitz = false;
+	int index, c;
+
+	while ((c = getopt_long(argc, argv, "46C:d:i:k:r:stT:u:v", long_options, &index)) != -1) {
+		switch (c) {
+		case '4':
+			cfg_family = AF_INET;
+			break;
+		case '6':
+			cfg_family = AF_INET6;
+			break;
+		case 'C':
+			parse_cpulist(optarg);
+			break;
+		case 'd':
+			cfg_dport = strtol(optarg, NULL, 0);
+			break;
+		case 'i':
+			cfg_ifname = optarg;
+			break;
+		case 'k':
+			parse_toeplitz_key(optarg, strlen(optarg),
+					   toeplitz_key);
+			have_toeplitz = true;
+			break;
+		case 'r':
+			parse_rps_bitmap(optarg);
+			break;
+		case 's':
+			cfg_sink = true;
+			break;
+		case 't':
+			cfg_type = SOCK_STREAM;
+			break;
+		case 'T':
+			cfg_timeout_msec = strtol(optarg, NULL, 0);
+			break;
+		case 'u':
+			cfg_type = SOCK_DGRAM;
+			break;
+		case 'v':
+			cfg_verbose = true;
+			break;
+
+		default:
+			error(1, 0, "unknown option %c", optopt);
+			break;
+		}
+	}
+
+	if (!have_toeplitz)
+		error(1, 0, "Must supply rss key ('-k')");
+
+	num_cpus = get_nprocs();
+	if (num_cpus > RSS_MAX_CPUS)
+		error(1, 0, "increase RSS_MAX_CPUS");
+
+	if (cfg_num_queues && cfg_num_rps_cpus)
+		error(1, 0,
+		      "Can't supply both RSS cpus ('-C') and RPS map ('-r')");
+	if (cfg_verbose) {
+		show_cpulist();
+		show_silos();
+	}
+}
+
+int main(int argc, char **argv)
+{
+	const int min_tests = 10;
+	int fd_sink = -1;
+
+	parse_opts(argc, argv);
+
+	if (cfg_sink)
+		fd_sink = setup_sink();
+
+	setup_rings();
+	process_rings();
+	cleanup_rings();
+
+	if (cfg_sink && close(fd_sink))
+		error(1, errno, "close sink");
+
+	if (frames_received - frames_nohash < min_tests)
+		error(1, 0, "too few frames for verification");
+
+	return frames_error;
+}
diff --git a/tools/testing/selftests/net/toeplitz.sh b/tools/testing/selftests/net/toeplitz.sh
new file mode 100755
index 000000000000..0a49907cd4fe
--- /dev/null
+++ b/tools/testing/selftests/net/toeplitz.sh
@@ -0,0 +1,199 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# extended toeplitz test: test rxhash plus, optionally, either (1) rss mapping
+# from rxhash to rx queue ('-rss') or (2) rps mapping from rxhash to cpu
+# ('-rps <rps_map>')
+#
+# irq-pattern-prefix can be derived from /sys/kernel/irq/*/action,
+# which is a driver-specific encoding.
+#
+# invoke as ./toeplitz.sh (-i <iface>) -u|-t -4|-6 \
+# [(-rss -irq_prefix <irq-pattern-prefix>)|(-rps <rps_map>)]
+
+source setup_loopback.sh
+readonly SERVER_IP4="192.168.1.200/24"
+readonly SERVER_IP6="fda8::1/64"
+readonly SERVER_MAC="aa:00:00:00:00:02"
+
+readonly CLIENT_IP4="192.168.1.100/24"
+readonly CLIENT_IP6="fda8::2/64"
+readonly CLIENT_MAC="aa:00:00:00:00:01"
+
+PORT=8000
+KEY="$(</proc/sys/net/core/netdev_rss_key)"
+TEST_RSS=false
+RPS_MAP=""
+PROTO_FLAG=""
+IP_FLAG=""
+DEV="eth0"
+
+# Return the number of rxqs among which RSS is configured to spread packets.
+# This is determined by reading the RSS indirection table using ethtool.
+get_rss_cfg_num_rxqs() {
+	echo $(ethtool -x "${DEV}" |
+		egrep [[:space:]]+[0-9]+:[[:space:]]+ |
+		cut -d: -f2- |
+		awk '{$1=$1};1' |
+		tr ' ' '\n' |
+		sort -u |
+		wc -l)
+}
+
+# Return a list of the receive irq handler cpus.
+# The list is ordered by the irqs, so first rxq-0 cpu, then rxq-1 cpu, etc.
+# Reads /sys/kernel/irq/ in order, so algorithm depends on
+# irq_{rxq-0} < irq_{rxq-1}, etc.
+get_rx_irq_cpus() {
+	CPUS=""
+	# sort so that irq 2 is read before irq 10
+	SORTED_IRQS=$(for i in /sys/kernel/irq/*; do echo $i; done | sort -V)
+	# Consider only as many queues as RSS actually uses. We assume that
+	# if RSS_CFG_NUM_RXQS=N, then RSS uses rxqs 0-(N-1).
+	RSS_CFG_NUM_RXQS=$(get_rss_cfg_num_rxqs)
+	RXQ_COUNT=0
+
+	for i in ${SORTED_IRQS}
+	do
+		[[ "${RXQ_COUNT}" -lt "${RSS_CFG_NUM_RXQS}" ]] || break
+		# lookup relevant IRQs by action name
+		[[ -e "$i/actions" ]] || continue
+		cat "$i/actions" | grep -q "${IRQ_PATTERN}" || continue
+		irqname=$(<"$i/actions")
+
+		# does the IRQ get called
+		irqcount=$(cat "$i/per_cpu_count" | tr -d '0,')
+		[[ -n "${irqcount}" ]] || continue
+
+		# lookup CPU
+		irq=$(basename "$i")
+		cpu=$(cat "/proc/irq/$irq/smp_affinity_list")
+
+		if [[ -z "${CPUS}" ]]; then
+			CPUS="${cpu}"
+		else
+			CPUS="${CPUS},${cpu}"
+		fi
+		RXQ_COUNT=$((RXQ_COUNT+1))
+	done
+
+	echo "${CPUS}"
+}
+
+get_disable_rfs_cmd() {
+	echo "echo 0 > /proc/sys/net/core/rps_sock_flow_entries;"
+}
+
+get_set_rps_bitmaps_cmd() {
+	CMD=""
+	for i in /sys/class/net/${DEV}/queues/rx-*/rps_cpus
+	do
+		CMD="${CMD} echo $1 > ${i};"
+	done
+
+	echo "${CMD}"
+}
+
+get_disable_rps_cmd() {
+	echo "$(get_set_rps_bitmaps_cmd 0)"
+}
+
+die() {
+	echo "$1"
+	exit 1
+}
+
+check_nic_rxhash_enabled() {
+	local -r pattern="receive-hashing:\ on"
+
+	ethtool -k "${DEV}" | grep -q "${pattern}" || die "rxhash must be enabled"
+}
+
+parse_opts() {
+	local prog=$0
+	shift 1
+
+	while [[ "$1" =~ "-" ]]; do
+		if [[ "$1" = "-irq_prefix" ]]; then
+			shift
+			IRQ_PATTERN="^$1-[0-9]*$"
+		elif [[ "$1" = "-u" || "$1" = "-t" ]]; then
+			PROTO_FLAG="$1"
+		elif [[ "$1" = "-4" ]]; then
+			IP_FLAG="$1"
+			SERVER_IP="${SERVER_IP4}"
+			CLIENT_IP="${CLIENT_IP4}"
+		elif [[ "$1" = "-6" ]]; then
+			IP_FLAG="$1"
+			SERVER_IP="${SERVER_IP6}"
+			CLIENT_IP="${CLIENT_IP6}"
+		elif [[ "$1" = "-rss" ]]; then
+			TEST_RSS=true
+		elif [[ "$1" = "-rps" ]]; then
+			shift
+			RPS_MAP="$1"
+		elif [[ "$1" = "-i" ]]; then
+			shift
+			DEV="$1"
+		else
+			die "Usage: ${prog} (-i <iface>) -u|-t -4|-6 \
+			     [(-rss -irq_prefix <irq-pattern-prefix>)|(-rps <rps_map>)]"
+		fi
+		shift
+	done
+}
+
+setup() {
+	setup_loopback_environment "${DEV}"
+
+	# Set up server_ns namespace and client_ns namespace
+	setup_macvlan_ns "${DEV}" server_ns server \
+	"${SERVER_MAC}" "${SERVER_IP}"
+	setup_macvlan_ns "${DEV}" client_ns client \
+	"${CLIENT_MAC}" "${CLIENT_IP}"
+}
+
+cleanup() {
+	cleanup_macvlan_ns server_ns server client_ns client
+	cleanup_loopback "${DEV}"
+}
+
+parse_opts $0 $@
+
+setup
+trap cleanup EXIT
+
+check_nic_rxhash_enabled
+
+# Actual test starts here
+if [[ "${TEST_RSS}" = true ]]; then
+	# RPS/RFS must be disabled because they move packets between cpus,
+	# which breaks the PACKET_FANOUT_CPU identification of RSS decisions.
+	eval "$(get_disable_rfs_cmd) $(get_disable_rps_cmd)" \
+	  ip netns exec server_ns ./toeplitz "${IP_FLAG}" "${PROTO_FLAG}" \
+	  -d "${PORT}" -i "${DEV}" -k "${KEY}" -T 1000 \
+	  -C "$(get_rx_irq_cpus)" -s -v &
+elif [[ ! -z "${RPS_MAP}" ]]; then
+	eval "$(get_disable_rfs_cmd) $(get_set_rps_bitmaps_cmd ${RPS_MAP})" \
+	  ip netns exec server_ns ./toeplitz "${IP_FLAG}" "${PROTO_FLAG}" \
+	  -d "${PORT}" -i "${DEV}" -k "${KEY}" -T 1000 \
+	  -r "0x${RPS_MAP}" -s -v &
+else
+	ip netns exec server_ns ./toeplitz "${IP_FLAG}" "${PROTO_FLAG}" \
+	  -d "${PORT}" -i "${DEV}" -k "${KEY}" -T 1000 -s -v &
+fi
+
+server_pid=$!
+
+ip netns exec client_ns ./toeplitz_client.sh "${PROTO_FLAG}" \
+  "${IP_FLAG}" "${SERVER_IP%%/*}" "${PORT}" &
+
+client_pid=$!
+
+wait "${server_pid}"
+exit_code=$?
+kill -9 "${client_pid}"
+if [[ "${exit_code}" -eq 0 ]]; then
+	echo "Test Succeeded!"
+fi
+exit "${exit_code}"
diff --git a/tools/testing/selftests/net/toeplitz_client.sh b/tools/testing/selftests/net/toeplitz_client.sh
new file mode 100755
index 000000000000..2fef34f4aba1
--- /dev/null
+++ b/tools/testing/selftests/net/toeplitz_client.sh
@@ -0,0 +1,28 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+#
+# A simple program for generating traffic for the toeplitz test.
+#
+# This program sends packets periodically for, conservatively, 20 seconds. The
+# intent is for the calling program to kill this program once it is no longer
+# needed, rather than waiting for the 20 second expiration.
+
+send_traffic() {
+	expiration=$((SECONDS+20))
+	while [[ "${SECONDS}" -lt "${expiration}" ]]
+	do
+		if [[ "${PROTO}" == "-u" ]]; then
+			echo "msg $i" | nc "${IPVER}" -u -w 0 "${ADDR}" "${PORT}"
+		else
+			echo "msg $i" | nc "${IPVER}" -w 0 "${ADDR}" "${PORT}"
+		fi
+		sleep 0.001
+	done
+}
+
+PROTO=$1
+IPVER=$2
+ADDR=$3
+PORT=$4
+
+send_traffic
diff --git a/tools/testing/selftests/net/unicast_extensions.sh b/tools/testing/selftests/net/unicast_extensions.sh
index 66354cdd5ce4..2d10ccac898a 100755
--- a/tools/testing/selftests/net/unicast_extensions.sh
+++ b/tools/testing/selftests/net/unicast_extensions.sh
@@ -28,12 +28,15 @@
 # These tests provide an easy way to flip the expected result of any
 # of these behaviors for testing kernel patches that change them.
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
 # nettest can be run from PATH or from same directory as this selftest
 if ! which nettest >/dev/null; then
 	PATH=$PWD:$PATH
 	if ! which nettest >/dev/null; then
 		echo "'nettest' command not found; skipping tests"
-		exit 0
+		exit $ksft_skip
 	fi
 fi
 
diff --git a/tools/testing/selftests/net/veth.sh b/tools/testing/selftests/net/veth.sh
index 11d7cdb898c0..19eac3e44c06 100755
--- a/tools/testing/selftests/net/veth.sh
+++ b/tools/testing/selftests/net/veth.sh
@@ -13,7 +13,7 @@ readonly NS_DST=$BASE$DST
 readonly BM_NET_V4=192.168.1.
 readonly BM_NET_V6=2001:db8::
 
-readonly NPROCS=`nproc`
+readonly CPUS=`nproc`
 ret=0
 
 cleanup() {
@@ -75,6 +75,29 @@ chk_tso_flag() {
 	__chk_flag "$1" $2 $3 tcp-segmentation-offload
 }
 
+chk_channels() {
+	local msg="$1"
+	local target=$2
+	local rx=$3
+	local tx=$4
+
+	local dev=veth$target
+
+	local cur_rx=`ip netns exec $BASE$target ethtool -l $dev |\
+		grep RX: | tail -n 1 | awk '{print $2}' `
+		local cur_tx=`ip netns exec $BASE$target ethtool -l $dev |\
+		grep TX: | tail -n 1 | awk '{print $2}'`
+	local cur_combined=`ip netns exec $BASE$target ethtool -l $dev |\
+		grep Combined: | tail -n 1 | awk '{print $2}'`
+
+	printf "%-60s" "$msg"
+	if [ "$cur_rx" = "$rx" -a "$cur_tx" = "$tx" -a "$cur_combined" = "n/a" ]; then
+		echo " ok "
+	else
+		echo " fail rx:$rx:$cur_rx tx:$tx:$cur_tx combined:n/a:$cur_combined"
+	fi
+}
+
 chk_gro() {
 	local msg="$1"
 	local expected=$2
@@ -107,11 +130,100 @@ chk_gro() {
 	fi
 }
 
+__change_channels()
+{
+	local cur_cpu
+	local end=$1
+	local cur
+	local i
+
+	while true; do
+		printf -v cur '%(%s)T'
+		[ $cur -le $end ] || break
+
+		for i in `seq 1 $CPUS`; do
+			ip netns exec $NS_SRC ethtool -L veth$SRC rx $i tx $i
+			ip netns exec $NS_DST ethtool -L veth$DST rx $i tx $i
+		done
+
+		for i in `seq 1 $((CPUS - 1))`; do
+			cur_cpu=$((CPUS - $i))
+			ip netns exec $NS_SRC ethtool -L veth$SRC rx $cur_cpu tx $cur_cpu
+			ip netns exec $NS_DST ethtool -L veth$DST rx $cur_cpu tx $cur_cpu
+		done
+	done
+}
+
+__send_data() {
+	local end=$1
+
+	while true; do
+		printf -v cur '%(%s)T'
+		[ $cur -le $end ] || break
+
+		ip netns exec $NS_SRC ./udpgso_bench_tx -4 -s 1000 -M 300 -D $BM_NET_V4$DST
+	done
+}
+
+do_stress() {
+	local end
+	printf -v end '%(%s)T'
+	end=$((end + $STRESS))
+
+	ip netns exec $NS_SRC ethtool -L veth$SRC rx 3 tx 3
+	ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3
+
+	ip netns exec $NS_DST ./udpgso_bench_rx &
+	local rx_pid=$!
+
+	echo "Running stress test for $STRESS seconds..."
+	__change_channels $end &
+	local ch_pid=$!
+	__send_data $end &
+	local data_pid_1=$!
+	__send_data $end &
+	local data_pid_2=$!
+	__send_data $end &
+	local data_pid_3=$!
+	__send_data $end &
+	local data_pid_4=$!
+
+	wait $ch_pid $data_pid_1 $data_pid_2 $data_pid_3 $data_pid_4
+	kill -9 $rx_pid
+	echo "done"
+
+	# restore previous setting
+	ip netns exec $NS_SRC ethtool -L veth$SRC rx 2 tx 2
+	ip netns exec $NS_DST ethtool -L veth$DST rx 2 tx 1
+}
+
+usage() {
+	echo "Usage: $0 [-h] [-s <seconds>]"
+	echo -e "\t-h: show this help"
+	echo -e "\t-s: run optional stress tests for the given amount of seconds"
+}
+
+STRESS=0
+while getopts "hs:" option; do
+	case "$option" in
+	"h")
+		usage $0
+		exit 0
+		;;
+	"s")
+		STRESS=$OPTARG
+		;;
+	esac
+done
+
 if [ ! -f ../bpf/xdp_dummy.o ]; then
 	echo "Missing xdp_dummy helper. Build bpf selftest first"
 	exit 1
 fi
 
+[ $CPUS -lt 2 ] && echo "Only one CPU available, some tests will be skipped"
+[ $STRESS -gt 0 -a $CPUS -lt 3 ] && echo " stress test will be skipped, too"
+
 create_ns
 chk_gro_flag "default - gro flag" $SRC off
 chk_gro_flag "        - peer gro flag" $DST off
@@ -134,6 +246,8 @@ chk_gro "        - aggregation with TSO off" 1
 cleanup
 
 create_ns
+chk_channels "default channels" $DST 1 1
+
 ip -n $NS_DST link set dev veth$DST down
 ip netns exec $NS_DST ethtool -K veth$DST gro on
 chk_gro_flag "with gro enabled on link down - gro flag" $DST on
@@ -147,6 +261,56 @@ chk_gro "        - aggregation with TSO off" 1
 cleanup
 
 create_ns
+
+CUR_TX=1
+CUR_RX=1
+if [ $CPUS -gt 1 ]; then
+	ip netns exec $NS_DST ethtool -L veth$DST tx 2
+	chk_channels "setting tx channels" $DST 1 2
+	CUR_TX=2
+fi
+
+if [ $CPUS -gt 2 ]; then
+	ip netns exec $NS_DST ethtool -L veth$DST rx 3 tx 3
+	chk_channels "setting both rx and tx channels" $DST 3 3
+	CUR_RX=3
+	CUR_TX=3
+fi
+
+ip netns exec $NS_DST ethtool -L veth$DST combined 2 2>/dev/null
+chk_channels "bad setting: combined channels" $DST $CUR_RX $CUR_TX
+
+ip netns exec $NS_DST ethtool -L veth$DST tx $((CPUS + 1)) 2>/dev/null
+chk_channels "setting invalid channels nr" $DST $CUR_RX $CUR_TX
+
+if [ $CPUS -gt 1 ]; then
+	# this also tests queues nr reduction
+	ip netns exec $NS_DST ethtool -L veth$DST rx 1 tx 2 2>/dev/null
+	ip netns exec $NS_SRC ethtool -L veth$SRC rx 1 tx 2 2>/dev/null
+	printf "%-60s" "bad setting: XDP with RX nr less than TX"
+	ip -n $NS_DST link set dev veth$DST xdp object ../bpf/xdp_dummy.o \
+		section xdp_dummy 2>/dev/null &&\
+		echo "fail - set operation successful ?!?" || echo " ok "
+
+	# the following tests will run with multiple channels active
+	ip netns exec $NS_SRC ethtool -L veth$SRC rx 2
+	ip netns exec $NS_DST ethtool -L veth$DST rx 2
+	ip -n $NS_DST link set dev veth$DST xdp object ../bpf/xdp_dummy.o \
+		section xdp_dummy 2>/dev/null
+	printf "%-60s" "bad setting: reducing RX nr below peer TX with XDP set"
+	ip netns exec $NS_DST ethtool -L veth$DST rx 1 2>/dev/null &&\
+		echo "fail - set operation successful ?!?" || echo " ok "
+	CUR_RX=2
+	CUR_TX=2
+fi
+
+if [ $CPUS -gt 2 ]; then
+	printf "%-60s" "bad setting: increasing peer TX nr above RX with XDP set"
+	ip netns exec $NS_SRC ethtool -L veth$SRC tx 3 2>/dev/null &&\
+		echo "fail - set operation successful ?!?" || echo " ok "
+	chk_channels "setting invalid channels nr" $DST 2 2
+fi
+
 ip -n $NS_DST link set dev veth$DST xdp object ../bpf/xdp_dummy.o section xdp_dummy 2>/dev/null
 chk_gro_flag "with xdp attached - gro flag" $DST on
 chk_gro_flag "        - peer gro flag" $SRC off
@@ -167,10 +331,27 @@ chk_gro_flag "        - after gro on xdp off, gro flag" $DST on
 chk_gro_flag "        - peer gro flag" $SRC off
 chk_tso_flag "        - tso flag" $SRC on
 chk_tso_flag "        - peer tso flag" $DST on
+
+if [ $CPUS -gt 1 ]; then
+	ip netns exec $NS_DST ethtool -L veth$DST tx 1
+	chk_channels "decreasing tx channels with device down" $DST 2 1
+fi
+
 ip -n $NS_DST link set dev veth$DST up
 ip -n $NS_SRC link set dev veth$SRC up
 chk_gro "        - aggregation" 1
 
+if [ $CPUS -gt 1 ]; then
+	[ $STRESS -gt 0 -a $CPUS -gt 2 ] && do_stress
+
+	ip -n $NS_DST link set dev veth$DST down
+	ip -n $NS_SRC link set dev veth$SRC down
+	ip netns exec $NS_DST ethtool -L veth$DST tx 2
+	chk_channels "increasing tx channels with device down" $DST 2 2
+	ip -n $NS_DST link set dev veth$DST up
+	ip -n $NS_SRC link set dev veth$SRC up
+fi
+
 ip netns exec $NS_DST ethtool -K veth$DST gro off
 ip netns exec $NS_SRC ethtool -K veth$SRC tx-udp-segmentation off
 chk_gro "aggregation again with default and TSO off" 10
diff --git a/tools/testing/selftests/net/vrf_strict_mode_test.sh b/tools/testing/selftests/net/vrf_strict_mode_test.sh
index 18b982d611de..865d53c1781c 100755
--- a/tools/testing/selftests/net/vrf_strict_mode_test.sh
+++ b/tools/testing/selftests/net/vrf_strict_mode_test.sh
@@ -3,6 +3,9 @@
 
 # This test is designed for testing the new VRF strict_mode functionality.
 
+# Kselftest framework requirement - SKIP code is 4.
+ksft_skip=4
+
 ret=0
 
 # identifies the "init" network namespace which is often called root network
@@ -371,18 +374,18 @@ vrf_strict_mode_check_support()
 
 if [ "$(id -u)" -ne 0 ];then
 	echo "SKIP: Need root privileges"
-	exit 0
+	exit $ksft_skip
 fi
 
 if [ ! -x "$(command -v ip)" ]; then
 	echo "SKIP: Could not run test without ip tool"
-	exit 0
+	exit $ksft_skip
 fi
 
 modprobe vrf &>/dev/null
 if [ ! -e /proc/sys/net/vrf/strict_mode ]; then
 	echo "SKIP: vrf sysctl does not exist"
-	exit 0
+	exit $ksft_skip
 fi
 
 cleanup &> /dev/null
diff --git a/tools/testing/selftests/tc-testing/tc-tests/actions/skbmod.json b/tools/testing/selftests/tc-testing/tc-tests/actions/skbmod.json
index 6eb4c4f97060..742f2290973e 100644
--- a/tools/testing/selftests/tc-testing/tc-tests/actions/skbmod.json
+++ b/tools/testing/selftests/tc-testing/tc-tests/actions/skbmod.json
@@ -417,5 +417,29 @@
         "teardown": [
             "$TC actions flush action skbmod"
         ]
+    },
+    {
+        "id": "fe09",
+        "name": "Add skbmod action to mark ECN bits",
+        "category": [
+            "actions",
+            "skbmod"
+        ],
+        "setup": [
+            [
+                "$TC actions flush action skbmod",
+                0,
+                1,
+                255
+            ]
+        ],
+        "cmdUnderTest": "$TC actions add action skbmod ecn",
+        "expExitCode": "0",
+        "verifyCmd": "$TC actions get action skbmod index 1",
+        "matchPattern": "action order [0-9]*: skbmod pipe ecn",
+        "matchCount": "1",
+        "teardown": [
+            "$TC actions flush action skbmod"
+        ]
     }
 ]
diff --git a/tools/testing/selftests/tc-testing/tc-tests/qdiscs/mq.json b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/mq.json
new file mode 100644
index 000000000000..88a20c781e49
--- /dev/null
+++ b/tools/testing/selftests/tc-testing/tc-tests/qdiscs/mq.json
@@ -0,0 +1,137 @@
+[
+	{
+	    "id": "ce7d",
+	    "name": "Add mq Qdisc to multi-queue device (4 queues)",
+	    "category": [
+            "qdisc",
+            "mq"
+	    ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+	    "setup": [
+            "echo \"1 1 4\" > /sys/bus/netdevsim/new_device"
+	    ],
+	    "cmdUnderTest": "$TC qdisc add dev $ETH root handle 1: mq",
+	    "expExitCode": "0",
+	    "verifyCmd": "$TC qdisc show dev $ETH",
+	    "matchPattern": "qdisc pfifo_fast 0: parent 1:[1-4] bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1",
+	    "matchCount": "4",
+	    "teardown": [
+		    "echo \"1\" > /sys/bus/netdevsim/del_device"
+	    ]
+	},
+	{
+	    "id": "2f82",
+	    "name": "Add mq Qdisc to multi-queue device (256 queues)",
+	    "category": [
+            "qdisc",
+            "mq"
+	    ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+	    "setup": [
+            "echo \"1 1 256\" > /sys/bus/netdevsim/new_device"
+	    ],
+	    "cmdUnderTest": "$TC qdisc add dev $ETH root handle 1: mq",
+	    "expExitCode": "0",
+	    "verifyCmd": "$TC qdisc show dev $ETH",
+	    "matchPattern": "qdisc pfifo_fast 0: parent 1:[1-9,a-f][0-9,a-f]{0,2} bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1",
+	    "matchCount": "256",
+	    "teardown": [
+		    "echo \"1\" > /sys/bus/netdevsim/del_device"
+	    ]
+	},
+	{
+	    "id": "c525",
+	    "name": "Add duplicate mq Qdisc",
+	    "category": [
+            "qdisc",
+            "mq"
+	    ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+	    "setup": [
+            "echo \"1 1 4\" > /sys/bus/netdevsim/new_device",
+            "$TC qdisc add dev $ETH root handle 1: mq"
+	    ],
+	    "cmdUnderTest": "$TC qdisc add dev $ETH root handle 1: mq",
+	    "expExitCode": "2",
+	    "verifyCmd": "$TC qdisc show dev $ETH",
+	    "matchPattern": "qdisc pfifo_fast 0: parent 1:[1-4] bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1",
+	    "matchCount": "4",
+	    "teardown": [
+		    "echo \"1\" > /sys/bus/netdevsim/del_device"
+	    ]
+	},
+	{
+	    "id": "128a",
+	    "name": "Delete nonexistent mq Qdisc",
+	    "category": [
+            "qdisc",
+            "mq"
+	    ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+	    "setup": [
+            "echo \"1 1 4\" > /sys/bus/netdevsim/new_device"
+	    ],
+	    "cmdUnderTest": "$TC qdisc del dev $ETH root handle 1: mq",
+	    "expExitCode": "2",
+	    "verifyCmd": "$TC qdisc show dev $ETH",
+	    "matchPattern": "qdisc pfifo_fast 0: parent 1:[1-4] bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1",
+	    "matchCount": "0",
+	    "teardown": [
+		    "echo \"1\" > /sys/bus/netdevsim/del_device"
+	    ]
+	},
+	{
+	    "id": "03a9",
+	    "name": "Delete mq Qdisc twice",
+	    "category": [
+            "qdisc",
+            "mq"
+	    ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+	    "setup": [
+            "echo \"1 1 4\" > /sys/bus/netdevsim/new_device",
+            "$TC qdisc add dev $ETH root handle 1: mq",
+            "$TC qdisc del dev $ETH root handle 1: mq"
+	    ],
+	    "cmdUnderTest": "$TC qdisc del dev $ETH root handle 1: mq",
+	    "expExitCode": "2",
+	    "verifyCmd": "$TC qdisc show dev $ETH",
+	    "matchPattern": "qdisc pfifo_fast 0: parent 1:[1-4] bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1",
+	    "matchCount": "0",
+	    "teardown": [
+		    "echo \"1\" > /sys/bus/netdevsim/del_device"
+	    ]
+	},
+    {
+	    "id": "be0f",
+	    "name": "Add mq Qdisc to single-queue device",
+	    "category": [
+            "qdisc",
+            "mq"
+	    ],
+        "plugins": {
+            "requires": "nsPlugin"
+        },
+	    "setup": [
+            "echo \"1 1\" > /sys/bus/netdevsim/new_device"
+	    ],
+	    "cmdUnderTest": "$TC qdisc add dev $ETH root handle 1: mq",
+	    "expExitCode": "2",
+	    "verifyCmd": "$TC qdisc show dev $ETH",
+	    "matchPattern": "qdisc pfifo_fast 0: parent 1:[1-4] bands 3 priomap 1 2 2 2 1 2 0 0 1 1 1 1 1 1 1 1",
+	    "matchCount": "0",
+	    "teardown": [
+		    "echo \"1\" > /sys/bus/netdevsim/del_device"
+	    ]
+	}
+]
diff --git a/tools/testing/selftests/tc-testing/tdc_config.py b/tools/testing/selftests/tc-testing/tdc_config.py
index cd4a27ee1466..ea04f04c173e 100644
--- a/tools/testing/selftests/tc-testing/tdc_config.py
+++ b/tools/testing/selftests/tc-testing/tdc_config.py
@@ -17,6 +17,7 @@ NAMES = {
           'DEV1': 'v0p1',
           'DEV2': '',
           'DUMMY': 'dummy1',
+	  'ETH': 'eth0',
           'BATCH_FILE': './batch.txt',
           'BATCH_DIR': 'tmp',
           # Length of time in seconds to wait before terminating a command