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veth: set peer GSO values

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[ Upstream commit 72d24955b4 ]

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>
This commit is contained in:
Stephen Hemminger
2017-12-07 15:40:20 -08:00
committed by Greg Kroah-Hartman
parent ff54d5e95a
commit c3fd4d3c19
1 changed files with 3 additions and 0 deletions
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3
drivers/net/veth.c
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@@ -425,6 +425,9 @@ 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;