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authorXin Long <lucien.xin@gmail.com>2018-11-18 16:14:47 +0800
committerDavid S. Miller <davem@davemloft.net>2018-11-19 12:42:47 -0800
commit69fec325a64383667b8a35df5d48d6ce52fb2782 (patch)
tree4d0a66f010fc1ce454530fc99e1c0f767010f3c2 /include/net/sctp
parentcc3ccf26f0649089b3a34a2781977755ea36e72c (diff)
downloadlinux-69fec325a64383667b8a35df5d48d6ce52fb2782.tar.gz
Revert "sctp: remove sctp_transport_pmtu_check"
This reverts commit 22d7be267eaa8114dcc28d66c1c347f667d7878a. The dst's mtu in transport can be updated by a non sctp place like in xfrm where the MTU information didn't get synced between asoc, transport and dst, so it is still needed to do the pmtu check in sctp_packet_config. Acked-by: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sctp')
-rw-r--r--include/net/sctp/sctp.h12
1 files changed, 12 insertions, 0 deletions
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 8c2caa370e0f..ab9242e51d9e 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -608,4 +608,16 @@ static inline __u32 sctp_dst_mtu(const struct dst_entry *dst)
SCTP_DEFAULT_MINSEGMENT));
}
+static inline bool sctp_transport_pmtu_check(struct sctp_transport *t)
+{
+ __u32 pmtu = sctp_dst_mtu(t->dst);
+
+ if (t->pathmtu == pmtu)
+ return true;
+
+ t->pathmtu = pmtu;
+
+ return false;
+}
+
#endif /* __net_sctp_h__ */