diff options
author | Xin Long <lucien.xin@gmail.com> | 2017-02-17 16:41:45 +0800 |
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committer | David S. Miller <davem@davemloft.net> | 2017-02-19 18:19:37 -0500 |
commit | a4d69a4c3ca6be699ed8cdc4683381ce44b85c90 (patch) | |
tree | 84d8c1c06593e5671bef4d666f12f4ede62a2dd5 /mm/init-mm.c | |
parent | 585396bc804d4e59d9591054ec12637d1698284c (diff) |
sctp: sctp_transport_dst_check should check if transport pmtu is dst mtu
Now when sending a packet, sctp_transport_dst_check will check if dst
is obsolete by calling ipv4/ip6_dst_check. But they return obsolete
only when adding a new cache, after that when the cache's pmtu is
updated again, it will not trigger transport->dst/pmtu's update.
It can be reproduced by reducing route's pmtu twice. At the 1st time
client will add a new cache, and transport->pathmtu gets updated as
sctp_transport_dst_check finds it's obsolete. But at the 2nd time,
cache's mtu is updated, sctp client will never send out any packet,
because transport->pmtu has no chance to update.
This patch is to fix this by also checking if transport pmtu is dst
mtu in sctp_transport_dst_check, so that transport->pmtu can be
updated on time.
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'mm/init-mm.c')
0 files changed, 0 insertions, 0 deletions