diff options
| author | Chang Xiangzhong <changxiangzhong@gmail.com> | 2013-11-21 22:56:28 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-11-23 14:46:18 -0800 |
| commit | d6c416148545bd99d3cc05e672460168245cc156 (patch) | |
| tree | 21252007b7d92340e39f3ddb03734f8cf93605f6 /net | |
| parent | 9d8506cc2d7ea1f911c72c100193a3677f6668c3 (diff) | |
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>
Diffstat (limited to 'net')
| -rw-r--r-- | net/sctp/outqueue.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sctp/outqueue.c b/net/sctp/outqueue.c index 94df7587786..abb6db008df 100644 --- a/net/sctp/outqueue.c +++ b/net/sctp/outqueue.c @@ -1391,7 +1391,8 @@ static void sctp_check_transmitted(struct sctp_outq *q, */ if (!tchunk->tsn_gap_acked) { tchunk->tsn_gap_acked = 1; - *highest_new_tsn_in_sack = tsn; + if (TSN_lt(*highest_new_tsn_in_sack, tsn)) + *highest_new_tsn_in_sack = tsn; bytes_acked += sctp_data_size(tchunk); if (!tchunk->transport) migrate_bytes += sctp_data_size(tchunk); |