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authorXin Long <lucien.xin@gmail.com>2017-12-08 21:03:58 +0800
committerDavid S. Miller <davem@davemloft.net>2017-12-11 11:23:04 -0500
commit772a58693fc3116d05b7969223a80a6376e639eb (patch)
tree2b164a1e1645470a05d36c4636e9f8e45962e38d /include
parent92ff42645028fa6f9b8aa767718457b9264316b4 (diff)
downloadlinux-772a58693fc3116d05b7969223a80a6376e639eb.tar.gz
sctp: add stream interleave enable members and sockopt
This patch adds intl_enable in asoc and netns, and strm_interleave in
sctp_sock to indicate if stream interleave is enabled and supported.

netns intl_enable would be set via procfs, but that is not added yet
until all stream interleave codes are completely implemented; asoc
intl_enable will be set when doing 4-shakehands.

sp strm_interleave can be set by sockopt SCTP_INTERLEAVING_SUPPORTED
which is also added in this patch. This socket option is defined in
section 4.3.1 of RFC8260.

Note that strm_interleave can only be set by sockopt when both netns
intl_enable and sp frag_interleave are set.

Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/netns/sctp.h5
-rw-r--r--include/net/sctp/structs.h2
-rw-r--r--include/uapi/linux/sctp.h1
3 files changed, 7 insertions, 1 deletions
diff --git a/include/net/netns/sctp.h b/include/net/netns/sctp.h
index ebc813277662..0db7fb3e4e15 100644
--- a/include/net/netns/sctp.h
+++ b/include/net/netns/sctp.h
@@ -122,9 +122,12 @@ struct netns_sctp {
 	/* Flag to indicate if PR-CONFIG is enabled. */
 	int reconf_enable;
 
-	/* Flag to idicate if SCTP-AUTH is enabled */
+	/* Flag to indicate if SCTP-AUTH is enabled */
 	int auth_enable;
 
+	/* Flag to indicate if stream interleave is enabled */
+	int intl_enable;
+
 	/*
 	 * Policy to control SCTP IPv4 address scoping
 	 * 0   - Disable IPv4 address scoping
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 2f8f93da5dc2..7030cbe11f45 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -217,6 +217,7 @@ struct sctp_sock {
 		disable_fragments:1,
 		v4mapped:1,
 		frag_interleave:1,
+		strm_interleave:1,
 		recvrcvinfo:1,
 		recvnxtinfo:1,
 		data_ready_signalled:1;
@@ -1940,6 +1941,7 @@ struct sctp_association {
 	__u8 need_ecne:1,	/* Need to send an ECNE Chunk? */
 	     temp:1,		/* Is it a temporary association? */
 	     force_delay:1,
+	     intl_enable:1,
 	     prsctp_enable:1,
 	     reconf_enable:1;
 
diff --git a/include/uapi/linux/sctp.h b/include/uapi/linux/sctp.h
index d9adab32dbee..6ed934c65a5f 100644
--- a/include/uapi/linux/sctp.h
+++ b/include/uapi/linux/sctp.h
@@ -125,6 +125,7 @@ typedef __s32 sctp_assoc_t;
 #define SCTP_SOCKOPT_PEELOFF_FLAGS 122
 #define SCTP_STREAM_SCHEDULER	123
 #define SCTP_STREAM_SCHEDULER_VALUE	124
+#define SCTP_INTERLEAVING_SUPPORTED	125
 
 /* PR-SCTP policies */
 #define SCTP_PR_SCTP_NONE	0x0000