From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolas Dichtel Subject: [PATCH net-next v2 12/12] veth: set iflink to the peer veth Date: Thu, 2 Apr 2015 17:07:11 +0200 Message-ID: <1427987231-3669-13-git-send-email-nicolas.dichtel@6wind.com> References: <1422979929.907.19.camel@edumazet-glaptop2.roam.corp.google.com> <1427987231-3669-1-git-send-email-nicolas.dichtel@6wind.com> Cc: davem@davemloft.net, eric.dumazet@gmail.com, Nicolas Dichtel To: netdev@vger.kernel.org Return-path: Received: from 33.106-14-84.ripe.coltfrance.com ([84.14.106.33]:56632 "EHLO proxy.6wind.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752679AbbDBPH1 (ORCPT ); Thu, 2 Apr 2015 11:07:27 -0400 In-Reply-To: <1427987231-3669-1-git-send-email-nicolas.dichtel@6wind.com> Sender: netdev-owner@vger.kernel.org List-ID: Now that the peer netns is advertised in rtnl messages, we can set this property so that IFLA_LINK will advertise the peer ifindex. It allows the userland to get the full veth configuration. Signed-off-by: Nicolas Dichtel --- drivers/net/veth.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/net/veth.c b/drivers/net/veth.c index 4cca36ebc4fb..c8186ffda1a3 100644 --- a/drivers/net/veth.c +++ b/drivers/net/veth.c @@ -263,6 +263,20 @@ static void veth_poll_controller(struct net_device *dev) } #endif /* CONFIG_NET_POLL_CONTROLLER */ +static int veth_get_iflink(const struct net_device *dev) +{ + struct veth_priv *priv = netdev_priv(dev); + struct net_device *peer; + int iflink; + + rcu_read_lock(); + peer = rcu_dereference(priv->peer); + iflink = peer ? peer->ifindex : 0; + rcu_read_unlock(); + + return iflink; +} + static const struct net_device_ops veth_netdev_ops = { .ndo_init = veth_dev_init, .ndo_open = veth_open, @@ -275,6 +289,7 @@ static const struct net_device_ops veth_netdev_ops = { #ifdef CONFIG_NET_POLL_CONTROLLER .ndo_poll_controller = veth_poll_controller, #endif + .ndo_get_iflink = veth_get_iflink, }; #define VETH_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \ -- 2.2.2