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Commit ac4f9599 authored by Daniel Borkmann's avatar Daniel Borkmann Committed by David S. Miller
Browse files

net: sctp: sctp_assoc_control_transport: fix MTU size in SCTP_PF state 

The SCTP Quick failover draft [1] section 5.1, point 5 says that the cwnd
should be 1 MTU. So, instead of 1, set it to 1 MTU.

  [1] https://tools.ietf.org/html/draft-nishida-tsvwg-sctp-failover-05



Reported-by: default avatarKarl Heiss <kheiss@gmail.com>
Signed-off-by: default avatarDaniel Borkmann <dborkman@redhat.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Acked-by: default avatarVlad Yasevich <vyasevich@gmail.com>
Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 56329137

net/sctp/associola.c

+2 −2
Original line number Diff line number Diff line
@@ -846,12 +846,12 @@ void sctp_assoc_control_transport(struct sctp_association *asoc, 
		else

			spc_state = SCTP_ADDR_AVAILABLE;

		/* Don't inform ULP about transition from PF to

		 * active state and set cwnd to 1, see SCTP

		 * active state and set cwnd to 1 MTU, see SCTP

		 * Quick failover draft section 5.1, point 5

		 */

		if (transport->state == SCTP_PF) {

			ulp_notify = false;

			transport->cwnd = 1;

			transport->cwnd = asoc->pathmtu;

		}

		transport->state = SCTP_ACTIVE;

		break;