This is a note to let you know that I've just added the patch titled
tipc: fix incompatible mtu of transmission
to the 5.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
tipc-fix-incompatible-mtu-of-transmission.patch
and it can be found in the queue-5.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Sun Dec 6 10:19:03 AM CET 2020
From: Hoang Le <hoang.h.le@xxxxxxxxxxxxxx>
Date: Mon, 30 Nov 2020 09:55:44 +0700
Subject: tipc: fix incompatible mtu of transmission
From: Hoang Le <hoang.h.le@xxxxxxxxxxxxxx>
[ Upstream commit 0643334902fcdc770e2d9555811200213339a3f6 ]
In commit 682cd3cf946b6
("tipc: confgiure and apply UDP bearer MTU on running links"), we
introduced a function to change UDP bearer MTU and applied this new value
across existing per-link. However, we did not apply this new MTU value at
node level. This lead to packet dropped at link level if its size is
greater than new MTU value.
To fix this issue, we also apply this new MTU value for node level.
Fixes: 682cd3cf946b6 ("tipc: confgiure and apply UDP bearer MTU on running links")
Acked-by: Jon Maloy <jmaloy@xxxxxxxxxx>
Signed-off-by: Hoang Le <hoang.h.le@xxxxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20201130025544.3602-1-hoang.h.le@xxxxxxxxxxxxxx
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/tipc/node.c | 2 ++
1 file changed, 2 insertions(+)
--- a/net/tipc/node.c
+++ b/net/tipc/node.c
@@ -2171,6 +2171,8 @@ void tipc_node_apply_property(struct net
else if (prop == TIPC_NLA_PROP_MTU)
tipc_link_set_mtu(e->link, b->mtu);
}
+ /* Update MTU for node link entry */
+ e->mtu = tipc_link_mss(e->link);
tipc_node_write_unlock(n);
tipc_bearer_xmit(net, bearer_id, &xmitq, &e->maddr, NULL);
}
Patches currently in stable-queue which might be from hoang.h.le@xxxxxxxxxxxxxx are
queue-5.9/tipc-fix-incompatible-mtu-of-transmission.patch
