Merge branch 'net-next' of git://git.kernel.org/pub/scm/linux/kernel/git/vxy/lksctp-dev

5 files changed, 61 insertions, 97 deletions

diff --git a/include/linux/sctp.h b/include/linux/sctp.h
index b464b9d3d242..c20d3ce673c0 100644
--- a/include/linux/sctp.h
+++ b/include/linux/sctp.h
@@ -242,6 +242,7 @@ enum {
 	SCTP_DATA_FIRST_FRAG	= 0x02,
 	SCTP_DATA_NOT_FRAG	= 0x03,
 	SCTP_DATA_UNORDERED	= 0x04,
+	SCTP_DATA_SACK_IMM	= 0x08,
 };
 enum { SCTP_DATA_FRAG_MASK = 0x03, };
 
diff --git a/include/net/sctp/constants.h b/include/net/sctp/constants.h
index 58f714a3b670..63908840eef0 100644
--- a/include/net/sctp/constants.h
+++ b/include/net/sctp/constants.h
@@ -308,6 +308,10 @@ enum { SCTP_MAX_GABS = 16 };
 
 #define SCTP_DEFAULT_MINWINDOW	1500	/* default minimum rwnd size */
 #define SCTP_DEFAULT_MAXWINDOW	65535	/* default rwnd size */
+#define SCTP_DEFAULT_RWND_SHIFT  4	/* by default, update on 1/16 of
+					 * rcvbuf, which is 1/8 of initial
+					 * window
+					 */
 #define SCTP_DEFAULT_MAXSEGMENT 1500	/* MTU size, this is the limit
                                          * to which we will raise the P-MTU.
 					 */
diff --git a/include/net/sctp/sm.h b/include/net/sctp/sm.h
index c1dd89365833..851c813adb3a 100644
--- a/include/net/sctp/sm.h
+++ b/include/net/sctp/sm.h
@@ -243,7 +243,8 @@ struct sctp_chunk *sctp_make_op_error(const struct sctp_association *,
 				 const struct sctp_chunk *chunk,
 				 __be16 cause_code,
 				 const void *payload,
-				 size_t paylen);
+				 size_t paylen,
+				 size_t reserve_tail);
 
 struct sctp_chunk *sctp_make_asconf_update_ip(struct sctp_association *,
 					      union sctp_addr *,
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index cd2e18778f81..bc3f8d879c5c 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -231,6 +231,11 @@ extern struct sctp_globals {
 	/* Flag to indicate whether computing and verifying checksum
 	 * is disabled. */
         int checksum_disable;
+
+	/* Threshold for rwnd update SACKS.  Receive buffer shifted this many
+	 * bits is an indicator of when to send and window update SACK.
+	 */
+	int rwnd_update_shift;
 } sctp_globals;
 
 #define sctp_rto_initial		(sctp_globals.rto_initial)
@@ -267,6 +272,7 @@ extern struct sctp_globals {
 #define sctp_prsctp_enable		(sctp_globals.prsctp_enable)
 #define sctp_auth_enable		(sctp_globals.auth_enable)
 #define sctp_checksum_disable		(sctp_globals.checksum_disable)
+#define sctp_rwnd_upd_shift		(sctp_globals.rwnd_update_shift)
 
 /* SCTP Socket type: UDP or TCP style. */
 typedef enum {
@@ -936,6 +942,8 @@ struct sctp_transport {
 	/* Data that has been sent, but not acknowledged. */
 	__u32 flight_size;
 
+	__u32 burst_limited;	/* Holds old cwnd when max.burst is applied */
+
 	/* TSN marking the fast recovery exit point */
 	__u32 fast_recovery_exit;
 
@@ -944,12 +952,6 @@ struct sctp_transport {
 	/* Source address. */
 	union sctp_addr saddr;
 
-	/* When was the last time(in jiffies) that a data packet was sent on
-	 * this transport?  This is used to adjust the cwnd when the transport
-	 * becomes inactive.
-	 */
-	unsigned long last_time_used;
-
 	/* Heartbeat interval: The endpoint sends out a Heartbeat chunk to
 	 * the destination address every heartbeat interval.
 	 */
@@ -1070,6 +1072,8 @@ void sctp_transport_put(struct sctp_transport *);
 void sctp_transport_update_rto(struct sctp_transport *, __u32);
 void sctp_transport_raise_cwnd(struct sctp_transport *, __u32, __u32);
 void sctp_transport_lower_cwnd(struct sctp_transport *, sctp_lower_cwnd_t);
+void sctp_transport_burst_limited(struct sctp_transport *);
+void sctp_transport_burst_reset(struct sctp_transport *);
 unsigned long sctp_transport_timeout(struct sctp_transport *);
 void sctp_transport_reset(struct sctp_transport *);
 void sctp_transport_update_pmtu(struct sctp_transport *, u32);
diff --git a/include/net/sctp/user.h b/include/net/sctp/user.h
index be2334aaf52e..2b2769c5ca9f 100644
--- a/include/net/sctp/user.h
+++ b/include/net/sctp/user.h
@@ -60,96 +60,49 @@ typedef __s32 sctp_assoc_t;
 /* The following symbols come from the Sockets API Extensions for
  * SCTP <draft-ietf-tsvwg-sctpsocket-07.txt>.
  */
-enum sctp_optname {
-	SCTP_RTOINFO,
-#define SCTP_RTOINFO SCTP_RTOINFO
-	SCTP_ASSOCINFO,
-#define SCTP_ASSOCINFO SCTP_ASSOCINFO
-	SCTP_INITMSG,
-#define SCTP_INITMSG SCTP_INITMSG
-	SCTP_NODELAY, 	/* Get/set nodelay option. */
-#define SCTP_NODELAY	SCTP_NODELAY
-	SCTP_AUTOCLOSE,
-#define SCTP_AUTOCLOSE SCTP_AUTOCLOSE
-	SCTP_SET_PEER_PRIMARY_ADDR, 
-#define SCTP_SET_PEER_PRIMARY_ADDR SCTP_SET_PEER_PRIMARY_ADDR
-	SCTP_PRIMARY_ADDR,
-#define SCTP_PRIMARY_ADDR SCTP_PRIMARY_ADDR
-	SCTP_ADAPTATION_LAYER,
-#define SCTP_ADAPTATION_LAYER SCTP_ADAPTATION_LAYER
-	SCTP_DISABLE_FRAGMENTS,
-#define SCTP_DISABLE_FRAGMENTS SCTP_DISABLE_FRAGMENTS
-	SCTP_PEER_ADDR_PARAMS,
-#define SCTP_PEER_ADDR_PARAMS SCTP_PEER_ADDR_PARAMS
-	SCTP_DEFAULT_SEND_PARAM,
-#define SCTP_DEFAULT_SEND_PARAM SCTP_DEFAULT_SEND_PARAM
-	SCTP_EVENTS,
-#define SCTP_EVENTS SCTP_EVENTS
-	SCTP_I_WANT_MAPPED_V4_ADDR,  /* Turn on/off mapped v4 addresses  */
-#define SCTP_I_WANT_MAPPED_V4_ADDR SCTP_I_WANT_MAPPED_V4_ADDR
-	SCTP_MAXSEG, 	/* Get/set maximum fragment. */
-#define SCTP_MAXSEG 	SCTP_MAXSEG
-	SCTP_STATUS,
-#define SCTP_STATUS SCTP_STATUS
-	SCTP_GET_PEER_ADDR_INFO,
-#define SCTP_GET_PEER_ADDR_INFO SCTP_GET_PEER_ADDR_INFO
-	SCTP_DELAYED_ACK,
-#define SCTP_DELAYED_ACK_TIME SCTP_DELAYED_ACK
-#define SCTP_DELAYED_ACK SCTP_DELAYED_ACK
-	SCTP_CONTEXT,	/* Receive Context */
-#define SCTP_CONTEXT SCTP_CONTEXT
-	SCTP_FRAGMENT_INTERLEAVE,
-#define SCTP_FRAGMENT_INTERLEAVE SCTP_FRAGMENT_INTERLEAVE
-	SCTP_PARTIAL_DELIVERY_POINT,	/* Set/Get partial delivery point */
-#define SCTP_PARTIAL_DELIVERY_POINT SCTP_PARTIAL_DELIVERY_POINT
-	SCTP_MAX_BURST,		/* Set/Get max burst */
-#define SCTP_MAX_BURST SCTP_MAX_BURST
-	SCTP_AUTH_CHUNK,	/* Set only: add a chunk type to authenticat */
-#define SCTP_AUTH_CHUNK SCTP_AUTH_CHUNK
-	SCTP_HMAC_IDENT,
-#define SCTP_HMAC_IDENT SCTP_HMAC_IDENT
-	SCTP_AUTH_KEY,
-#define SCTP_AUTH_KEY SCTP_AUTH_KEY
-	SCTP_AUTH_ACTIVE_KEY,
-#define SCTP_AUTH_ACTIVE_KEY SCTP_AUTH_ACTIVE_KEY
-	SCTP_AUTH_DELETE_KEY,
-#define SCTP_AUTH_DELETE_KEY SCTP_AUTH_DELETE_KEY
-	SCTP_PEER_AUTH_CHUNKS,		/* Read only */
-#define SCTP_PEER_AUTH_CHUNKS SCTP_PEER_AUTH_CHUNKS
-	SCTP_LOCAL_AUTH_CHUNKS,		/* Read only */
-#define SCTP_LOCAL_AUTH_CHUNKS SCTP_LOCAL_AUTH_CHUNKS
-	SCTP_GET_ASSOC_NUMBER,		/* Read only */
-#define SCTP_GET_ASSOC_NUMBER SCTP_GET_ASSOC_NUMBER
-
-
-	/* Internal Socket Options. Some of the sctp library functions are 
-	 * implemented using these socket options.
-	 */
-	SCTP_SOCKOPT_BINDX_ADD = 100,/* BINDX requests for adding addresses. */
-#define SCTP_SOCKOPT_BINDX_ADD	SCTP_SOCKOPT_BINDX_ADD
-	SCTP_SOCKOPT_BINDX_REM, /* BINDX requests for removing addresses. */
-#define SCTP_SOCKOPT_BINDX_REM	SCTP_SOCKOPT_BINDX_REM
-	SCTP_SOCKOPT_PEELOFF, 	/* peel off association. */
-#define SCTP_SOCKOPT_PEELOFF	SCTP_SOCKOPT_PEELOFF
-	SCTP_GET_PEER_ADDRS_NUM_OLD, 	/* Get number of peer addresss. */
-#define SCTP_GET_PEER_ADDRS_NUM_OLD	SCTP_GET_PEER_ADDRS_NUM_OLD
-	SCTP_GET_PEER_ADDRS_OLD, 	/* Get all peer addresss. */
-#define SCTP_GET_PEER_ADDRS_OLD	SCTP_GET_PEER_ADDRS_OLD
-	SCTP_GET_LOCAL_ADDRS_NUM_OLD, 	/* Get number of local addresss. */
-#define SCTP_GET_LOCAL_ADDRS_NUM_OLD	SCTP_GET_LOCAL_ADDRS_NUM_OLD
-	SCTP_GET_LOCAL_ADDRS_OLD, 	/* Get all local addresss. */
-#define SCTP_GET_LOCAL_ADDRS_OLD	SCTP_GET_LOCAL_ADDRS_OLD
-	SCTP_SOCKOPT_CONNECTX_OLD, /* CONNECTX old requests. */
-#define SCTP_SOCKOPT_CONNECTX_OLD	SCTP_SOCKOPT_CONNECTX_OLD
-	SCTP_GET_PEER_ADDRS, 	/* Get all peer addresss. */
-#define SCTP_GET_PEER_ADDRS	SCTP_GET_PEER_ADDRS
-	SCTP_GET_LOCAL_ADDRS, 	/* Get all local addresss. */
-#define SCTP_GET_LOCAL_ADDRS	SCTP_GET_LOCAL_ADDRS
-	SCTP_SOCKOPT_CONNECTX, /* CONNECTX requests. */
-#define SCTP_SOCKOPT_CONNECTX	SCTP_SOCKOPT_CONNECTX
-	SCTP_SOCKOPT_CONNECTX3, /* CONNECTX requests. (new implementation) */
-#define SCTP_SOCKOPT_CONNECTX3	SCTP_SOCKOPT_CONNECTX3
-};
+#define SCTP_RTOINFO	0
+#define SCTP_ASSOCINFO  1
+#define SCTP_INITMSG	2
+#define SCTP_NODELAY	3		/* Get/set nodelay option. */
+#define SCTP_AUTOCLOSE	4
+#define SCTP_SET_PEER_PRIMARY_ADDR 5
+#define SCTP_PRIMARY_ADDR	6
+#define SCTP_ADAPTATION_LAYER	7
+#define SCTP_DISABLE_FRAGMENTS	8
+#define SCTP_PEER_ADDR_PARAMS	9
+#define SCTP_DEFAULT_SEND_PARAM	10
+#define SCTP_EVENTS	11
+#define SCTP_I_WANT_MAPPED_V4_ADDR 12	/* Turn on/off mapped v4 addresses  */
+#define SCTP_MAXSEG	13		/* Get/set maximum fragment. */
+#define SCTP_STATUS	14
+#define SCTP_GET_PEER_ADDR_INFO	15
+#define SCTP_DELAYED_ACK_TIME	16
+#define SCTP_DELAYED_ACK SCTP_DELAYED_ACK_TIME
+#define SCTP_CONTEXT	17
+#define SCTP_FRAGMENT_INTERLEAVE	18
+#define SCTP_PARTIAL_DELIVERY_POINT	19 /* Set/Get partial delivery point */
+#define SCTP_MAX_BURST	20		/* Set/Get max burst */
+#define SCTP_AUTH_CHUNK	21	/* Set only: add a chunk type to authenticate */
+#define SCTP_HMAC_IDENT	22
+#define SCTP_AUTH_KEY	23
+#define SCTP_AUTH_ACTIVE_KEY	24
+#define SCTP_AUTH_DELETE_KEY	25
+#define SCTP_PEER_AUTH_CHUNKS	26	/* Read only */
+#define SCTP_LOCAL_AUTH_CHUNKS	27	/* Read only */
+#define SCTP_GET_ASSOC_NUMBER	28	/* Read only */
+
+/* Internal Socket Options. Some of the sctp library functions are
+ * implemented using these socket options.
+ */
+#define SCTP_SOCKOPT_BINDX_ADD	100	/* BINDX requests for adding addrs */
+#define SCTP_SOCKOPT_BINDX_REM	101	/* BINDX requests for removing addrs. */
+#define SCTP_SOCKOPT_PEELOFF	102	/* peel off association. */
+/* Options 104-106 are deprecated and removed. Do not use this space */
+#define SCTP_SOCKOPT_CONNECTX_OLD	107	/* CONNECTX old requests. */
+#define SCTP_GET_PEER_ADDRS	108		/* Get all peer addresss. */
+#define SCTP_GET_LOCAL_ADDRS	109		/* Get all local addresss. */
+#define SCTP_SOCKOPT_CONNECTX	110		/* CONNECTX requests. */
+#define SCTP_SOCKOPT_CONNECTX3	111	/* CONNECTX requests (updated) */
 
 /*
  * 5.2.1 SCTP Initiation Structure (SCTP_INIT)
@@ -206,6 +159,7 @@ enum sctp_sinfo_flags {
 	SCTP_UNORDERED = 1,  /* Send/receive message unordered. */
 	SCTP_ADDR_OVER = 2,  /* Override the primary destination. */
 	SCTP_ABORT=4,        /* Send an ABORT message to the peer. */
+	SCTP_SACK_IMMEDIATELY = 8,	/* SACK should be sent without delay */
 	SCTP_EOF=MSG_FIN,    /* Initiate graceful shutdown process. */	
 };