net: sctp: find the correct highest_new_tsn in sack
authorChang Xiangzhong <changxiangzhong@gmail.com>
Thu, 21 Nov 2013 21:56:28 +0000 (22:56 +0100)
committerDavid S. Miller <davem@davemloft.net>
Sat, 23 Nov 2013 22:46:18 +0000 (14:46 -0800)
commitd6c416148545bd99d3cc05e672460168245cc156
tree21252007b7d92340e39f3ddb03734f8cf93605f6
parent9d8506cc2d7ea1f911c72c100193a3677f6668c3
net: sctp: find the correct highest_new_tsn in sack

Function sctp_check_transmitted(transport t, ...) would iterate all of
transport->transmitted queue and looking for the highest __newly__ acked tsn.
The original algorithm would depend on the order of the assoc->transport_list
(in function sctp_outq_sack line 1215 - 1226). The result might not be the
expected due to the order of the tranport_list.

Solution: checking if the exising is smaller than the new one before assigning

Signed-off-by: Chang Xiangzhong <changxiangzhong@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/sctp/outqueue.c