[SCTP]: Implement sac_info field in SCTP_ASSOC_CHANGE notification.

As stated in the sctp socket api draft:

   sac_info: variable

   If the sac_state is SCTP_COMM_LOST and an ABORT chunk was received
   for this association, sac_info[] contains the complete ABORT chunk as
   defined in the SCTP specification RFC2960 [RFC2960] section 3.3.7.

We now save received ABORT chunks into the sac_info field and pass that
to the user.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 2 insertions, 0 deletions

diff --git a/include/net/sctp/ulpevent.h b/include/net/sctp/ulpevent.h
index 2923e3d31a0..de88ed5b0ba 100644
--- a/include/net/sctp/ulpevent.h
+++ b/include/net/sctp/ulpevent.h
@@ -89,6 +89,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_assoc_change(
         __u16 error,
         __u16 outbound,
         __u16 inbound,
+        struct sctp_chunk *chunk,
         gfp_t gfp);
 
 struct sctp_ulpevent *sctp_ulpevent_make_peer_addr_change(
diff --git a/include/net/sctp/user.h b/include/net/sctp/user.h
index 80b7afea17f..1b3153c2cdf 100644
--- a/include/net/sctp/user.h
+++ b/include/net/sctp/user.h
@@ -217,6 +217,7 @@ struct sctp_assoc_change {
         __u16 sac_outbound_streams;
         __u16 sac_inbound_streams;
         sctp_assoc_t sac_assoc_id;
+        __u8 sac_info[0];
 };
 
 /*