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sctp: send abort chunk when max_retrans exceeded

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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>
This commit is contained in:
Neil Horman
2012-11-20 10:14:30 +00:00
committed by David S. Miller
parent 388dfc2d2d
commit de4594a51c
3 changed files with 29 additions and 1 deletions
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2
include/net/sctp/sm.h
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@@ -234,6 +234,8 @@ struct sctp_chunk *sctp_make_abort_violation(const struct sctp_association *,
struct sctp_chunk *sctp_make_violation_paramlen(const struct sctp_association *,
const struct sctp_chunk *,
struct sctp_paramhdr *);
struct sctp_chunk *sctp_make_violation_max_retrans(const struct sctp_association *,
const struct sctp_chunk *);
struct sctp_chunk *sctp_make_heartbeat(const struct sctp_association *,
const struct sctp_transport *);
struct sctp_chunk *sctp_make_heartbeat_ack(const struct sctp_association *,