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authorWei Yongjun <yjwei@cn.fujitsu.com>2009-03-12 09:49:19 +0000
committerDavid S. Miller <davem@davemloft.net>2009-03-13 11:37:58 -0700
commit76595024ffab3599bd28ea014f6c23c1a8c8dd2c (patch)
treec7beb060526957cf24e215d0d676219b5482ac29 /net/sctp/outqueue.c
parent5ffad5acebec735b7a368851bf22394b734cae8a (diff)
downloadlinux-76595024ffab3599bd28ea014f6c23c1a8c8dd2c.tar.gz
sctp: fix to send FORWARD-TSN chunk only if peer has such capable
RFC3758 Section 3.3.1.  Sending Forward-TSN-Supported param in INIT

   Note that if the endpoint chooses NOT to include the parameter, then
   at no time during the life of the association can it send or process
   a FORWARD TSN.

If peer does not support PR-SCTP capable, don't send FORWARD-TSN chunk
to peer.

Signed-off-by: Wei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/outqueue.c')
-rw-r--r--net/sctp/outqueue.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c
index a367d15a21aa..d765fc53e74d 100644
--- a/net/sctp/outqueue.c
+++ b/net/sctp/outqueue.c
@@ -1758,6 +1758,9 @@ static void sctp_generate_fwdtsn(struct sctp_outq *q, __u32 ctsn)
 	struct sctp_chunk *chunk;
 	struct list_head *lchunk, *temp;
 
+	if (!asoc->peer.prsctp_capable)
+		return;
+
 	/* PR-SCTP C1) Let SackCumAck be the Cumulative TSN ACK carried in the
 	 * received SACK.
 	 *