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Commit bb446c19 authored by WANG Cong's avatar WANG Cong Committed by David S. Miller
Browse files

veth: add netpoll support 



It is trivial to add netpoll support to veth, since
it is not a stacked device, we don't need to setup and
clean up netpoll.

Reported-by: default avatarStefan Priebe <s.priebe@profihost.ag>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Neil Horman <nhorman@tuxdriver.com>
Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: default avatarCong Wang <xiyou.wangcong@gmail.com>
Acked-by: default avatarNeil Horman <nhorman@tuxdriver.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 13ec7a6b

drivers/net/veth.c

+18 −0
Original line number Diff line number Diff line
@@ -248,6 +248,21 @@ static void veth_dev_free(struct net_device *dev) 
	free_netdev(dev);

}



#ifdef CONFIG_NET_POLL_CONTROLLER

static void veth_poll_controller(struct net_device *dev)

{

	/* veth only receives frames when its peer sends one

	 * Since it's a synchronous operation, we are guaranteed

	 * never to have pending data when we poll for it so

	 * there is nothing to do here.

	 *

	 * We need this though so netpoll recognizes us as an interface that

	 * supports polling, which enables bridge devices in virt setups to

	 * still use netconsole

	 */

}

#endif	/* CONFIG_NET_POLL_CONTROLLER */



static const struct net_device_ops veth_netdev_ops = {

	.ndo_init            = veth_dev_init,

	.ndo_open            = veth_open,
@@ -257,6 +272,9 @@ static const struct net_device_ops veth_netdev_ops = { 
	.ndo_get_stats64     = veth_get_stats64,

	.ndo_set_rx_mode     = veth_set_multicast_list,

	.ndo_set_mac_address = eth_mac_addr,

#ifdef CONFIG_NET_POLL_CONTROLLER

	.ndo_poll_controller	= veth_poll_controller,

#endif

};



#define VETH_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_ALL_TSO |    \