This is a note to let you know that I've just added the patch titled
net: sctp: Don't transition to PF state when transport
to the 3.14-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
net-sctp-don-t-transition-to-pf-state-when-transport.patch
and it can be found in the queue-3.14 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Wed May 28 21:03:54 PDT 2014
From: Karl Heiss <kheiss@xxxxxxxxx>
Date: Fri, 25 Apr 2014 14:26:30 -0400
Subject: net: sctp: Don't transition to PF state when transport
has exhausted 'Path.Max.Retrans'.
From: Karl Heiss <kheiss@xxxxxxxxx>
[ Upstream commit 8c2eab9097dba50bcd73ed4632baccc3f34857f9 ]
Don't transition to the PF state on every strike after 'Path.Max.Retrans'.
Per draft-ietf-tsvwg-sctp-failover-03 Section 5.1.6:
Additional (PMR - PFMR) consecutive timeouts on a PF destination
confirm the path failure, upon which the destination transitions to the
Inactive state. As described in [RFC4960], the sender (i) SHOULD notify
ULP about this state transition, and (ii) transmit heartbeats to the
Inactive destination at a lower frequency as described in Section 8.3 of
[RFC4960].
This also prevents sending SCTP_ADDR_UNREACHABLE to the user as the state
bounces between SCTP_INACTIVE and SCTP_PF for each subsequent strike.
Signed-off-by: Karl Heiss <kheiss@xxxxxxxxx>
Acked-by: Vlad Yasevich <vyasevich@xxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/sctp/sm_sideeffect.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -496,11 +496,10 @@ static void sctp_do_8_2_transport_strike
/* If the transport error count is greater than the pf_retrans
* threshold, and less than pathmaxrtx, and if the current state
- * is not SCTP_UNCONFIRMED, then mark this transport as Partially
- * Failed, see SCTP Quick Failover Draft, section 5.1
+ * is SCTP_ACTIVE, then mark this transport as Partially Failed,
+ * see SCTP Quick Failover Draft, section 5.1
*/
- if ((transport->state != SCTP_PF) &&
- (transport->state != SCTP_UNCONFIRMED) &&
+ if ((transport->state == SCTP_ACTIVE) &&
(asoc->pf_retrans < transport->pathmaxrxt) &&
(transport->error_count > asoc->pf_retrans)) {
Patches currently in stable-queue which might be from kheiss@xxxxxxxxx are
queue-3.14/net-sctp-don-t-transition-to-pf-state-when-transport.patch
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