Commit 4d04a02d authored Dec 07, 2017 by Stephen Hemminger Committed by Greg Kroah-Hartman Mar 22, 2018

veth: set peer GSO values




[ Upstream commit 72d24955b44a4039db54a1c252b5031969eeaac3 ]

When new veth is created, and GSO values have been configured
on one device, clone those values to the peer.

For example:
   # ip link add dev vm1 gso_max_size 65530 type veth peer name vm2

This should create vm1 <--> vm2 with both having GSO maximum
size set to 65530.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 780de727

drivers/net/veth.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -382,6 +382,9 @@ static int veth_newlink(struct net src_net, struct net_device dev,
		if (ifmp && (dev->ifindex != 0))
		peer->ifindex = ifmp->ifi_index;

		peer->gso_max_size = dev->gso_max_size;
		peer->gso_max_segs = dev->gso_max_segs;

		err = register_netdevice(peer);
		put_net(net);
		net = NULL;