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authorMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>2018-04-26 16:58:57 -0300
committerDavid S. Miller <davem@davemloft.net>2018-04-27 14:35:23 -0400
commit6ff0f871c20ec1769a481edca86f23c76b2b06d3 (patch)
tree9fa281c225263df1e1b00e12adfeedfdb6e690f1 /net/sctp
parent2521680e1830c21033efe48322829044c6e6b32b (diff)
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sctp: introduce sctp_dst_mtu
Which makes sure that the MTU respects the minimum value of SCTP_DEFAULT_MINSEGMENT and that it is correctly aligned. Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sctp')
-rw-r--r--net/sctp/associola.c6
-rw-r--r--net/sctp/transport.c6
2 files changed, 5 insertions, 7 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index a29025418b96..039fdb862b17 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -1405,11 +1405,9 @@ void sctp_assoc_sync_pmtu(struct sctp_association *asoc)
return;
/* Get the lowest pmtu of all the transports. */
- list_for_each_entry(t, &asoc->peer.transport_addr_list,
- transports) {
+ list_for_each_entry(t, &asoc->peer.transport_addr_list, transports) {
if (t->pmtu_pending && t->dst) {
- sctp_transport_update_pmtu(
- t, SCTP_TRUNC4(dst_mtu(t->dst)));
+ sctp_transport_update_pmtu(t, sctp_dst_mtu(t->dst));
t->pmtu_pending = 0;
}
if (!pmtu || (t->pathmtu < pmtu))
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index c5fc3aed08a1..ed73a9d91b83 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -242,9 +242,9 @@ void sctp_transport_pmtu(struct sctp_transport *transport, struct sock *sk)
&transport->fl, sk);
}
- if (transport->dst) {
- transport->pathmtu = SCTP_TRUNC4(dst_mtu(transport->dst));
- } else
+ if (transport->dst)
+ transport->pathmtu = sctp_dst_mtu(transport->dst);
+ else
transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT;
}