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Commit 76595024 authored by Wei Yongjun's avatar Wei Yongjun Committed by David S. Miller
Browse files

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: default avatarWei Yongjun <yjwei@cn.fujitsu.com>
Signed-off-by: default avatarVlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5ffad5ac

net/sctp/outqueue.c

+3 −0
Original line number Diff line number Diff line
@@ -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.

	 *