/* Must be called with rcu_read_lock. */
static void netdev_port_receive(struct vport *vport, struct sk_buff *skb)
{
if (unlikely(!vport)) {
kfree_skb(skb);
return;
}
/* Make our own copy of the packet. Otherwise we will mangle the
* packet for anyone who came before us (e.g. tcpdump via AF_PACKET).
* (No one comes after us, since we tell handle_bridge() that we took
* the packet.) */
skb = skb_share_check(skb, GFP_ATOMIC);
if (unlikely(!skb))
return;
skb_push(skb, ETH_HLEN);
if (unlikely(compute_ip_summed(skb, false))) {
kfree_skb(skb);
return;
}
vlan_copy_skb_tci(skb);
ovs_vport_receive(vport, skb);
}
static struct rtnl_link_stats64 *internal_dev_get_stats(struct net_device *netdev,
struct rtnl_link_stats64 *stats)
{
#else
static struct net_device_stats *internal_dev_sys_stats(struct net_device *netdev)
{
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,22)
struct net_device_stats *stats = &internal_dev_priv(netdev)->stats;
#else
struct net_device_stats *stats = &netdev->stats;
#endif
#endif
struct vport *vport = ovs_internal_dev_get_vport(netdev);
struct ovs_vport_stats vport_stats;
ovs_vport_get_stats(vport, &vport_stats);
/* The tx and rx stats need to be swapped because the
* switch and host OS have opposite perspectives. */
stats->rx_packets = vport_stats.tx_packets;
stats->tx_packets = vport_stats.rx_packets;
stats->rx_bytes = vport_stats.tx_bytes;
stats->tx_bytes = vport_stats.rx_bytes;
stats->rx_errors = vport_stats.tx_errors;
stats->tx_errors = vport_stats.rx_errors;
stats->rx_dropped = vport_stats.tx_dropped;
stats->tx_dropped = vport_stats.rx_dropped;
return stats;
}
/* Called with rcu_read_lock_bh. */
static int internal_dev_xmit(struct sk_buff *skb, struct net_device *netdev)
{
if (unlikely(compute_ip_summed(skb, true))) {
kfree_skb(skb);
return 0;
}
vlan_copy_skb_tci(skb);
rcu_read_lock();
ovs_vport_receive(internal_dev_priv(netdev)->vport, skb, NULL);
rcu_read_unlock();
return 0;
}
static int internal_dev_open(struct net_device *netdev)
{
netif_start_queue(netdev);
return 0;
}