From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: [PATCH net-next 2/2] veth: set peer GSO values Date: Thu, 7 Dec 2017 15:40:20 -0800 Message-ID: <20171207234020.18783-3-sthemmin@microsoft.com> References: <20171207234020.18783-1-sthemmin@microsoft.com> Cc: netdev@vger.kernel.org, Stephen Hemminger To: davem@davemloft.net Return-path: Received: from mail-pg0-f66.google.com ([74.125.83.66]:44482 "EHLO mail-pg0-f66.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751020AbdLGXk0 (ORCPT ); Thu, 7 Dec 2017 18:40:26 -0500 Received: by mail-pg0-f66.google.com with SMTP id j9so5565168pgc.11 for ; Thu, 07 Dec 2017 15:40:26 -0800 (PST) In-Reply-To: <20171207234020.18783-1-sthemmin@microsoft.com> Sender: netdev-owner@vger.kernel.org List-ID: 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 --- drivers/net/veth.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/veth.c b/drivers/net/veth.c index f5438d0978ca..a69ad39ee57e 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -410,6 +410,9 @@ 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; -- 2.11.0