Commit 8da645e1 authored Sep 04, 2009 by Vlad Yasevich

sctp: Get rid of an extra routing lookup when adding a transport.



We used to perform 2 routing lookups for a new transport: one
just for path mtu detection, and one to actually route to destination
and path mtu update when sending a packet.  There is no point in doing
both of them, especially since the first one just for path mtu doesn't
take into account source address and sometimes gives the wrong route,
causing path mtu updates anyway.

We now do just the one call to do both route to destination and get
path mtu updates.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>

parent a803c942

net/sctp/associola.c

+8 −6

Original line number	Diff line number	Diff line
		@@ -680,13 +680,15 @@ struct sctp_transport sctp_assoc_add_peer(struct sctp_association asoc,
		*/
		peer->param_flags = asoc->param_flags;

		sctp_transport_route(peer, NULL, sp);

		/* Initialize the pmtu of the transport. */
		if (peer->param_flags & SPP_PMTUD_ENABLE)
		sctp_transport_pmtu(peer);
		else if (asoc->pathmtu)
		if (peer->param_flags & SPP_PMTUD_DISABLE) {
		if (asoc->pathmtu)
		peer->pathmtu = asoc->pathmtu;
		else
		peer->pathmtu = SCTP_DEFAULT_MAXSEGMENT;
		}

		/* If this is the first transport addr on this association,
		* initialize the association PMTU to the peer's PMTU.

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