[SCTP]: Add support for SCTP_CONTEXT socket option.

Signed-off-by: Ivan Skytte Jorgensen <isj-sctp@i1.dk>
Signed-off-by: Sridhar Samudrala <sri@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index b00d85e..8d7f26d 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -275,6 +275,7 @@
 	__u16 default_flags;
 	__u32 default_context;
 	__u32 default_timetolive;
+	__u32 default_rcv_context;
 
 	/* Heartbeat interval: The endpoint sends out a Heartbeat chunk to
 	 * the destination address every heartbeat interval. This value
@@ -1657,6 +1658,9 @@
 	__u32 default_context;
 	__u32 default_timetolive;
 
+	/* Default receive parameters */
+	__u32 default_rcv_context;
+
 	/* This tracks outbound ssn for a given stream.	 */
 	struct sctp_ssnmap *ssnmap;
 
diff --git a/include/net/sctp/user.h b/include/net/sctp/user.h
index 1b7aae6..9e4a39f 100644
--- a/include/net/sctp/user.h
+++ b/include/net/sctp/user.h
@@ -95,6 +95,8 @@
 #define SCTP_GET_PEER_ADDR_INFO SCTP_GET_PEER_ADDR_INFO
 	SCTP_DELAYED_ACK_TIME,
 #define SCTP_DELAYED_ACK_TIME SCTP_DELAYED_ACK_TIME
+	SCTP_CONTEXT,	/* Receive Context */
+#define SCTP_CONTEXT SCTP_CONTEXT
 
 	/* Internal Socket Options. Some of the sctp library functions are 
 	 * implemented using these socket options.