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Commit 34d2d89f authored by Michio Honda's avatar Michio Honda Committed by David S. Miller
Browse files

sctp: fasthandoff with ASCONF at server-node 



Retransmit chunks to newly confirmed destination when ASCONF and
HEARTBEAT negotiation has success with a single-homed peer.

Signed-off-by: default avatarMichio Honda <micchie@sfc.wide.ad.jp>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ddc4bbee

net/sctp/sm_sideeffect.c

+7 −1
Original line number Diff line number Diff line
@@ -666,6 +666,7 @@ static void sctp_cmd_transport_on(sctp_cmd_seq_t *cmds, 
				  struct sctp_chunk *chunk)

{

	sctp_sender_hb_info_t *hbinfo;

	int was_unconfirmed = 0;



	/* 8.3 Upon the receipt of the HEARTBEAT ACK, the sender of the

	 * HEARTBEAT should clear the error counter of the destination
@@ -692,9 +693,11 @@ static void sctp_cmd_transport_on(sctp_cmd_seq_t *cmds, 
	/* Mark the destination transport address as active if it is not so

	 * marked.

	 */

	if ((t->state == SCTP_INACTIVE) || (t->state == SCTP_UNCONFIRMED))

	if ((t->state == SCTP_INACTIVE) || (t->state == SCTP_UNCONFIRMED)) {

		was_unconfirmed = 1;

		sctp_assoc_control_transport(asoc, t, SCTP_TRANSPORT_UP,

					     SCTP_HEARTBEAT_SUCCESS);

	}



	/* The receiver of the HEARTBEAT ACK should also perform an

	 * RTT measurement for that destination transport address
@@ -712,6 +715,9 @@ static void sctp_cmd_transport_on(sctp_cmd_seq_t *cmds, 
	/* Update the heartbeat timer.  */

	if (!mod_timer(&t->hb_timer, sctp_transport_timeout(t)))

		sctp_transport_hold(t);



	if (was_unconfirmed && asoc->peer.transport_count == 1)

		sctp_transport_immediate_rtx(t);

}