diff options
| author | Benjamin LaHaise <bcrl@kvack.org> | 2011-12-08 10:20:49 +0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-12-09 04:58:30 +0400 |
| commit | 6d4cdf47d2cc9d40227c67c79a4942e36ed1b0ba (patch) | |
| tree | 5c31e3f1be3ba098f57ae33796e50ea50dcee1e9 /net/8021q/vlan_dev.c | |
| parent | 8af2a218de38f51ea4b4fa48cac1273319ae260c (diff) | |
| download | linux-6d4cdf47d2cc9d40227c67c79a4942e36ed1b0ba.tar.xz | |
vlan: add 802.1q netpoll support
Add netpoll support to 802.1q vlan devices. Based on the netpoll support
in the bridging code. Tested on a forced_eth device with netconsole.
Signed-off-by: Benjamin LaHaise <bcrl@kvack.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/8021q/vlan_dev.c')
| -rw-r--r-- | net/8021q/vlan_dev.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c index 3b4db82b016f..039013923a74 100644 --- a/net/8021q/vlan_dev.c +++ b/net/8021q/vlan_dev.c @@ -33,6 +33,7 @@ #include "vlan.h" #include "vlanproc.h" #include <linux/if_vlan.h> +#include <linux/netpoll.h> /* * Rebuild the Ethernet MAC header. This is called after an ARP @@ -158,6 +159,8 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb, skb_set_dev(skb, vlan_dev_priv(dev)->real_dev); len = skb->len; + if (netpoll_tx_running(dev)) + return skb->dev->netdev_ops->ndo_start_xmit(skb, skb->dev); ret = dev_queue_xmit(skb); if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) { @@ -660,6 +663,57 @@ static struct rtnl_link_stats64 *vlan_dev_get_stats64(struct net_device *dev, st return stats; } +#ifdef CONFIG_NET_POLL_CONTROLLER +void vlan_dev_poll_controller(struct net_device *dev) +{ + return; +} + +int vlan_dev_netpoll_setup(struct net_device *dev, struct netpoll_info *npinfo) +{ + struct vlan_dev_priv *info = vlan_dev_priv(dev); + struct net_device *real_dev = info->real_dev; + struct netpoll *netpoll; + int err = 0; + + netpoll = kzalloc(sizeof(*netpoll), GFP_KERNEL); + err = -ENOMEM; + if (!netpoll) + goto out; + + netpoll->dev = real_dev; + strlcpy(netpoll->dev_name, real_dev->name, IFNAMSIZ); + + err = __netpoll_setup(netpoll); + if (err) { + kfree(netpoll); + goto out; + } + + info->netpoll = netpoll; + +out: + return err; +} + +void vlan_dev_netpoll_cleanup(struct net_device *dev) +{ + struct vlan_dev_priv *info = vlan_dev_priv(dev); + struct netpoll *netpoll = info->netpoll; + + if (!netpoll) + return; + + info->netpoll = NULL; + + /* Wait for transmitting packets to finish before freeing. */ + synchronize_rcu_bh(); + + __netpoll_cleanup(netpoll); + kfree(netpoll); +} +#endif /* CONFIG_NET_POLL_CONTROLLER */ + static const struct ethtool_ops vlan_ethtool_ops = { .get_settings = vlan_ethtool_get_settings, .get_drvinfo = vlan_ethtool_get_drvinfo, @@ -688,6 +742,11 @@ static const struct net_device_ops vlan_netdev_ops = { .ndo_fcoe_get_wwn = vlan_dev_fcoe_get_wwn, .ndo_fcoe_ddp_target = vlan_dev_fcoe_ddp_target, #endif +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = vlan_dev_poll_controller, + .ndo_netpoll_setup = vlan_dev_netpoll_setup, + .ndo_netpoll_cleanup = vlan_dev_netpoll_cleanup, +#endif .ndo_fix_features = vlan_dev_fix_features, }; |