Commit 06433349 authored Nov 30, 2020 by Hoang Le Committed by Jakub Kicinski Dec 01, 2020

tipc: fix incompatible mtu of transmission



In commit 682cd3cf
("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: 682cd3cf ("tipc: confgiure and apply UDP bearer MTU on running links")
Acked-by: Jon Maloy <jmaloy@redhat.com>
Signed-off-by: Hoang Le <hoang.h.le@dektech.com.au>
Link: https://lore.kernel.org/r/20201130025544.3602-1-hoang.h.le@dektech.com.au


Signed-off-by: Jakub Kicinski <kuba@kernel.org>

parent 14483cbf

net/tipc/node.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -2182,6 +2182,8 @@ void tipc_node_apply_property(struct net net, struct tipc_bearer b,
		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);
		}

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