tree bb3cb42d6ee511b336bcbd7a4617d9f604ab2cb5
parent 145cb2f7177d94bc54563ed26027e952ee0ae03c
author Jere Leppänen <jere.leppanen@nokia.com> 1587495822 +0300
committer David S. Miller <davem@davemloft.net> 1587608860 -0700

sctp: Fix SHUTDOWN CTSN Ack in the peer restart case

When starting shutdown in sctp_sf_do_dupcook_a(), get the value for
SHUTDOWN Cumulative TSN Ack from the new association, which is
reconstructed from the cookie, instead of the old association, which
the peer doesn't have anymore.

Otherwise the SHUTDOWN is either ignored or replied to with an ABORT
by the peer because CTSN Ack doesn't match the peer's Initial TSN.

Fixes: bdf6fa52f01b ("sctp: handle association restarts when the socket is closed.")
Signed-off-by: Jere Leppänen <jere.leppanen@nokia.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>