diff options
| author | Dave Airlie <airlied@redhat.com> | 2011-07-13 08:30:11 +0100 |
|---|---|---|
| committer | Dave Airlie <airlied@redhat.com> | 2011-07-13 08:30:22 +0100 |
| commit | cf056edbbe70393faa6edd2b7859a14467910946 (patch) | |
| tree | ca30ef021f12d1f06e18856a60f815ba63e78f60 /drivers/net/tun.c | |
| parent | 58b6542b50ded4243c26c251c0507e5f658642f6 (diff) | |
| parent | 620917de59eeb934b9f8cf35cc2d95c1ac8ed0fc (diff) | |
Merge 3.0-rc7 into drm-core-next
This pulls in all the drm fixes up to this point which are needed
for some -next patches to work.
Diffstat (limited to 'drivers/net/tun.c')
| -rw-r--r-- | drivers/net/tun.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/drivers/net/tun.c b/drivers/net/tun.c index 74e94054ab1a..5235f48be1be 100644 --- a/drivers/net/tun.c +++ b/drivers/net/tun.c @@ -460,7 +460,23 @@ static u32 tun_net_fix_features(struct net_device *dev, u32 features) return (features & tun->set_features) | (features & ~TUN_USER_FEATURES); } - +#ifdef CONFIG_NET_POLL_CONTROLLER +static void tun_poll_controller(struct net_device *dev) +{ + /* + * Tun only receives frames when: + * 1) the char device endpoint gets data from user space + * 2) the tun socket gets a sendmsg call from user space + * Since both of those are syncronous operations, we are guaranteed + * never to have pending data when we poll for it + * so theres nothing to do here but return. + * 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 + */ + return; +} +#endif static const struct net_device_ops tun_netdev_ops = { .ndo_uninit = tun_net_uninit, .ndo_open = tun_net_open, @@ -468,6 +484,9 @@ static const struct net_device_ops tun_netdev_ops = { .ndo_start_xmit = tun_net_xmit, .ndo_change_mtu = tun_net_change_mtu, .ndo_fix_features = tun_net_fix_features, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = tun_poll_controller, +#endif }; static const struct net_device_ops tap_netdev_ops = { @@ -480,6 +499,9 @@ static const struct net_device_ops tap_netdev_ops = { .ndo_set_multicast_list = tun_net_mclist, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = tun_poll_controller, +#endif }; /* Initialize net device. */ |