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authorNeil Horman <nhorman@tuxdriver.com>2012-11-20 10:14:30 (GMT)
committerDavid S. Miller <davem@davemloft.net>2012-11-20 20:50:37 (GMT)
commitde4594a51c904ddcd6c3a6cdd100f7c1d94d3239 (patch)
tree717425cdc0617de66ac42d14902f09ee513db856 /net/sctp/sm_sideeffect.c
parent388dfc2d2d9c43c251921a397d6fe5ef7dc34731 (diff)
downloadlinux-de4594a51c904ddcd6c3a6cdd100f7c1d94d3239.tar.xz
sctp: send abort chunk when max_retrans exceeded
In the event that an association exceeds its max_retrans attempts, we should send an ABORT chunk indicating that we are closing the assocation as a result. Because of the nature of the error, its unlikely to be received, but its a nice clean way to close the association if it does make it through, and it will give anyone watching via tcpdump a clue as to what happened. Change notes: v2) * Removed erroneous changes from sctp_make_violation_parmlen Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: Vlad Yasevich <vyasevich@gmail.com> CC: "David S. Miller" <davem@davemloft.net> CC: linux-sctp@vger.kernel.org Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp/sm_sideeffect.c')
-rw-r--r--net/sctp/sm_sideeffect.c9
1 files changed, 8 insertions, 1 deletions
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 6eecf7e..c076956 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -577,7 +577,7 @@ static void sctp_cmd_assoc_failed(sctp_cmd_seq_t *commands,
unsigned int error)
{
struct sctp_ulpevent *event;
-
+ struct sctp_chunk *abort;
/* Cancel any partial delivery in progress. */
sctp_ulpq_abort_pd(&asoc->ulpq, GFP_ATOMIC);
@@ -593,6 +593,13 @@ static void sctp_cmd_assoc_failed(sctp_cmd_seq_t *commands,
sctp_add_cmd_sf(commands, SCTP_CMD_EVENT_ULP,
SCTP_ULPEVENT(event));
+ if (asoc->overall_error_count >= asoc->max_retrans) {
+ abort = sctp_make_violation_max_retrans(asoc, chunk);
+ if (abort)
+ sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
+ SCTP_CHUNK(abort));
+ }
+
sctp_add_cmd_sf(commands, SCTP_CMD_NEW_STATE,
SCTP_STATE(SCTP_STATE_CLOSED));