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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>
This commit is contained in:
Wei Yongjun 2009-03-12 09:49:19 +00:00 committed by David S. Miller
parent 5ffad5aceb
commit 76595024ff
1 changed files with 3 additions and 0 deletions
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3
net/sctp/outqueue.c
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@ -1758,6 +1758,9 @@ static void sctp_generate_fwdtsn(struct sctp_outq *q, __u32 ctsn)
struct sctp_chunk *chunk; struct sctp_chunk *chunk;
struct list_head *lchunk, *temp; struct list_head *lchunk, *temp;
if (!asoc->peer.prsctp_capable)
return;
/* PR-SCTP C1) Let SackCumAck be the Cumulative TSN ACK carried in the /* PR-SCTP C1) Let SackCumAck be the Cumulative TSN ACK carried in the
* received SACK. * received SACK.
* *