1 #include <linux/kernel.h>
2 #include <linux/netdevice.h>
3 #include <linux/etherdevice.h>
4 #include <linux/rcupdate.h>
10 struct net_device_stats stats;
14 static struct dp_dev *dp_dev_priv(struct net_device *netdev)
16 return netdev_priv(netdev);
19 static struct net_device_stats *dp_dev_get_stats(struct net_device *netdev)
21 struct dp_dev *dp_dev = dp_dev_priv(netdev);
22 return &dp_dev->stats;
25 int dp_dev_recv(struct net_device *netdev, struct sk_buff *skb)
28 struct dp_dev *dp_dev = dp_dev_priv(netdev);
29 skb->pkt_type = PACKET_HOST;
30 skb->protocol = eth_type_trans(skb, netdev);
32 netdev->last_rx = jiffies;
33 dp_dev->stats.rx_packets++;
34 dp_dev->stats.rx_bytes += len;
38 static int dp_dev_mac_addr(struct net_device *dev, void *p)
40 struct sockaddr *addr = p;
42 if (netif_running(dev))
44 if (!is_valid_ether_addr(addr->sa_data))
45 return -EADDRNOTAVAIL;
46 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
50 static int dp_dev_xmit(struct sk_buff *skb, struct net_device *netdev)
52 struct dp_dev *dp_dev = dp_dev_priv(netdev);
56 if (likely(dp != NULL)) {
57 dp_dev->stats.tx_packets++;
58 dp_dev->stats.tx_bytes += skb->len;
59 skb_reset_mac_header(skb);
60 fwd_port_input(dp->chain, skb, OFPP_LOCAL);
62 dp_dev->stats.tx_dropped++;
69 static int dp_dev_open(struct net_device *netdev)
71 netif_start_queue(netdev);
75 static int dp_dev_stop(struct net_device *netdev)
77 netif_stop_queue(netdev);
82 do_setup(struct net_device *netdev)
86 netdev->get_stats = dp_dev_get_stats;
87 netdev->hard_start_xmit = dp_dev_xmit;
88 netdev->open = dp_dev_open;
89 netdev->stop = dp_dev_stop;
90 netdev->tx_queue_len = 0;
91 netdev->set_mac_address = dp_dev_mac_addr;
93 netdev->flags = IFF_BROADCAST | IFF_MULTICAST;
95 random_ether_addr(netdev->dev_addr);
99 int dp_dev_setup(struct datapath *dp)
101 struct dp_dev *dp_dev;
102 struct net_device *netdev;
106 snprintf(of_name, sizeof of_name, "of%d", dp->dp_idx);
107 netdev = alloc_netdev(sizeof(struct dp_dev), of_name, do_setup);
111 err = register_netdev(netdev);
117 dp_dev = dp_dev_priv(netdev);
123 void dp_dev_destroy(struct datapath *dp)
125 struct dp_dev *dp_dev = dp_dev_priv(dp->netdev);
128 unregister_netdev(dp->netdev);
129 free_netdev(dp->netdev);
132 int is_dp_dev(struct net_device *netdev)
134 return netdev->open == dp_dev_open;