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| author | Nicolas Dichtel <nicolas.dichtel@6wind.com> | 2012-10-03 05:43:22 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-10-04 15:53:48 -0400 |
| commit | edfee0339e681a784ebacec7e8c2dc97dc6d2839 (patch) | |
| tree | ec4c3953956d2de79ee326d08e46c6d9736a1068 /net/sctp/sm_statefuns.c | |
| parent | 575659936f9d392b93b03ce97a58dbd4fce18abd (diff) | |
| download | linux-edfee0339e681a784ebacec7e8c2dc97dc6d2839.tar.gz linux-edfee0339e681a784ebacec7e8c2dc97dc6d2839.tar.bz2 linux-edfee0339e681a784ebacec7e8c2dc97dc6d2839.zip | |
sctp: check src addr when processing SACK to update transport state
Suppose we have an SCTP connection with two paths. After connection is
established, path1 is not available, thus this path is marked as inactive. Then
traffic goes through path2, but for some reasons packets are delayed (after
rto.max). Because packets are delayed, the retransmit mechanism will switch
again to path1. At this time, we receive a delayed SACK from path2. When we
update the state of the path in sctp_check_transmitted(), we do not take into
account the source address of the SACK, hence we update the wrong path.
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/sm_statefuns.c')
| -rw-r--r-- | net/sctp/sm_statefuns.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c index 094813b6c3c3..b6adef8a1e93 100644 --- a/net/sctp/sm_statefuns.c +++ b/net/sctp/sm_statefuns.c @@ -3179,7 +3179,7 @@ sctp_disposition_t sctp_sf_eat_sack_6_2(struct net *net, return sctp_sf_violation_ctsn(net, ep, asoc, type, arg, commands); /* Return this SACK for further processing. */ - sctp_add_cmd_sf(commands, SCTP_CMD_PROCESS_SACK, SCTP_SACKH(sackh)); + sctp_add_cmd_sf(commands, SCTP_CMD_PROCESS_SACK, SCTP_CHUNK(chunk)); /* Note: We do the rest of the work on the PROCESS_SACK * sideeffect. |