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| author | lucien <lucien.xin@gmail.com> | 2015-08-27 04:52:20 +0800 |
|---|---|---|
| committer | Ben Hutchings <ben@decadent.org.uk> | 2015-10-13 03:46:04 +0100 |
| commit | 9f9ccecbabfa9c4307fcae2942f54fd750b6d865 (patch) | |
| tree | a4bff5959bf51a8db0f38b3c40868a84213ce71f | |
| parent | 3e3b6dd79063a283c00352f373a9fdc91749e986 (diff) | |
| download | kernel_samsung_smdk4412-9f9ccecbabfa9c4307fcae2942f54fd750b6d865.zip kernel_samsung_smdk4412-9f9ccecbabfa9c4307fcae2942f54fd750b6d865.tar.gz kernel_samsung_smdk4412-9f9ccecbabfa9c4307fcae2942f54fd750b6d865.tar.bz2 | |
sctp: donot reset the overall_error_count in SHUTDOWN_RECEIVE state
commit f648f807f61e64d247d26611e34cc97e4ed03401 upstream.
Commit f8d960524328 ("sctp: Enforce retransmission limit during shutdown")
fixed a problem with excessive retransmissions in the SHUTDOWN_PENDING by not
resetting the association overall_error_count. This allowed the association
to better enforce assoc.max_retrans limit.
However, the same issue still exists when the association is in SHUTDOWN_RECEIVED
state. In this state, HB-ACKs will continue to reset the overall_error_count
for the association would extend the lifetime of association unnecessarily.
This patch solves this by resetting the overall_error_count whenever the current
state is small then SCTP_STATE_SHUTDOWN_PENDING. As a small side-effect, we
end up also handling SCTP_STATE_SHUTDOWN_ACK_SENT and SCTP_STATE_SHUTDOWN_SENT
states, but they are not really impacted because we disable Heartbeats in those
states.
Fixes: Commit f8d960524328 ("sctp: Enforce retransmission limit during shutdown")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
| -rw-r--r-- | net/sctp/sm_sideeffect.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c index 76388b0..581c06a 100644 --- a/net/sctp/sm_sideeffect.c +++ b/net/sctp/sm_sideeffect.c @@ -681,7 +681,7 @@ static void sctp_cmd_transport_on(sctp_cmd_seq_t *cmds, * outstanding data and rely on the retransmission limit be reached * to shutdown the association. */ - if (t->asoc->state != SCTP_STATE_SHUTDOWN_PENDING) + if (t->asoc->state < SCTP_STATE_SHUTDOWN_PENDING) t->asoc->overall_error_count = 0; /* Clear the hb_sent flag to signal that we had a good |