3 * Linux ethernet bridge
6 * Lennert Buytenhek <buytenh@gnu.org>
8 * $Id: br_device.c,v 1.6 2001/12/24 00:59:55 davem Exp $
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
16 #include <linux/kernel.h>
17 #include <linux/netdevice.h>
18 #include <linux/module.h>
19 #include <asm/uaccess.h>
20 #include "br_private.h"
22 static struct net_device_stats *br_dev_get_stats(struct net_device *dev)
24 struct net_bridge *br;
28 return &br->statistics;
31 int br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
33 struct net_bridge *br = netdev_priv(dev);
34 const unsigned char *dest = skb->data;
35 struct net_bridge_fdb_entry *dst;
37 br->statistics.tx_packets++;
38 br->statistics.tx_bytes += skb->len;
40 skb->mac.raw = skb->data;
41 skb_pull(skb, ETH_HLEN);
45 br_flood_deliver(br, skb, 0);
46 else if ((dst = __br_fdb_get(br, dest)) != NULL)
47 br_deliver(dst->dst, skb);
49 br_flood_deliver(br, skb, 0);
55 static int br_dev_open(struct net_device *dev)
57 netif_start_queue(dev);
59 br_stp_enable_bridge(dev->priv);
64 static void br_dev_set_multicast_list(struct net_device *dev)
68 static int br_dev_stop(struct net_device *dev)
70 br_stp_disable_bridge(dev->priv);
72 netif_stop_queue(dev);
77 static int br_change_mtu(struct net_device *dev, int new_mtu)
79 if ((new_mtu < 68) || new_mtu > br_min_mtu(dev->priv))
86 void br_dev_setup(struct net_device *dev)
88 memset(dev->dev_addr, 0, ETH_ALEN);
92 dev->do_ioctl = br_dev_ioctl;
93 dev->get_stats = br_dev_get_stats;
94 dev->hard_start_xmit = br_dev_xmit;
95 dev->open = br_dev_open;
96 dev->set_multicast_list = br_dev_set_multicast_list;
97 dev->change_mtu = br_change_mtu;
98 dev->destructor = free_netdev;
99 SET_MODULE_OWNER(dev);
100 dev->stop = br_dev_stop;
101 dev->tx_queue_len = 0;
102 dev->set_mac_address = NULL;
103 dev->priv_flags = IFF_EBRIDGE;