From c4b2893dae6427ce1e528033383c94cbf81e80d8 Mon Sep 17 00:00:00 2001 From: Marcelo Ricardo Leitner Date: Thu, 26 Apr 2018 16:58:53 -0300 Subject: sctp: introduce sctp_assoc_set_pmtu All changes to asoc PMTU should now go through this wrapper, making it easier to track them and to do other actions upon it. Signed-off-by: Marcelo Ricardo Leitner Signed-off-by: David S. Miller --- net/sctp/associola.c | 21 +++++++++++++-------- 1 file changed, 13 insertions(+), 8 deletions(-) (limited to 'net/sctp/associola.c') diff --git a/net/sctp/associola.c b/net/sctp/associola.c index c5ed09cfa842..85b362324084 100644 --- a/net/sctp/associola.c +++ b/net/sctp/associola.c @@ -660,13 +660,9 @@ struct sctp_transport *sctp_assoc_add_peer(struct sctp_association *asoc, * If not and the current association PMTU is higher than the new * peer's PMTU, reset the association PMTU to the new peer's PMTU. */ - if (asoc->pathmtu) - asoc->pathmtu = min_t(int, peer->pathmtu, asoc->pathmtu); - else - asoc->pathmtu = peer->pathmtu; - - pr_debug("%s: association:%p PMTU set to %d\n", __func__, asoc, - asoc->pathmtu); + sctp_assoc_set_pmtu(asoc, asoc->pathmtu ? + min_t(int, peer->pathmtu, asoc->pathmtu) : + peer->pathmtu); peer->pmtu_pending = 0; @@ -1374,6 +1370,15 @@ sctp_assoc_choose_alter_transport(struct sctp_association *asoc, } } +void sctp_assoc_set_pmtu(struct sctp_association *asoc, __u32 pmtu) +{ + if (asoc->pathmtu != pmtu) + asoc->pathmtu = pmtu; + + pr_debug("%s: asoc:%p, pmtu:%d, frag_point:%d\n", __func__, asoc, + asoc->pathmtu, asoc->frag_point); +} + /* Update the association's pmtu and frag_point by going through all the * transports. This routine is called when a transport's PMTU has changed. */ @@ -1397,7 +1402,7 @@ void sctp_assoc_sync_pmtu(struct sctp_association *asoc) pmtu = t->pathmtu; } - asoc->pathmtu = pmtu; + sctp_assoc_set_pmtu(asoc, pmtu); asoc->frag_point = sctp_frag_point(asoc, pmtu); pr_debug("%s: asoc:%p, pmtu:%d, frag_point:%d\n", __func__, asoc, -- cgit v1.2.3