Commit 06433349 authored by Hoang Le's avatar Hoang Le Committed by Jakub Kicinski
Browse files

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: default avatarJon Maloy <jmaloy@redhat.com>
Signed-off-by: default avatarHoang 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: default avatarJakub 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);

	}