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 int br_dev_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
24 unsigned long args[4];
27 if (cmd != SIOCDEVPRIVATE)
30 data = (unsigned long *)rq->ifr_data;
31 if (copy_from_user(args, data, 4*sizeof(unsigned long)))
34 return br_ioctl_device(dev->priv, args[0], args[1], args[2], args[3]);
37 static struct net_device_stats *br_dev_get_stats(struct net_device *dev)
39 struct net_bridge *br;
43 return &br->statistics;
46 static int __br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
48 struct net_bridge *br;
50 struct net_bridge_fdb_entry *dst;
53 br->statistics.tx_packets++;
54 br->statistics.tx_bytes += skb->len;
56 dest = skb->mac.raw = skb->data;
57 skb_pull(skb, ETH_HLEN);
60 br_flood_deliver(br, skb, 0);
64 if ((dst = br_fdb_get(br, dest)) != NULL) {
65 br_deliver(dst->dst, skb);
70 br_flood_deliver(br, skb, 0);
74 int br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
79 ret = __br_dev_xmit(skb, dev);
85 static int br_dev_open(struct net_device *dev)
87 netif_start_queue(dev);
89 br_stp_enable_bridge(dev->priv);
94 static void br_dev_set_multicast_list(struct net_device *dev)
98 static int br_dev_stop(struct net_device *dev)
100 br_stp_disable_bridge(dev->priv);
102 netif_stop_queue(dev);
107 static int br_dev_accept_fastpath(struct net_device *dev, struct dst_entry *dst)
112 void br_dev_setup(struct net_device *dev)
114 memset(dev->dev_addr, 0, ETH_ALEN);
118 dev->do_ioctl = br_dev_do_ioctl;
119 dev->get_stats = br_dev_get_stats;
120 dev->hard_start_xmit = br_dev_xmit;
121 dev->open = br_dev_open;
122 dev->set_multicast_list = br_dev_set_multicast_list;
123 dev->destructor = free_netdev;
124 SET_MODULE_OWNER(dev);
125 dev->stop = br_dev_stop;
126 dev->accept_fastpath = br_dev_accept_fastpath;
127 dev->tx_queue_len = 0;
128 dev->set_mac_address = NULL;
129 dev->priv_flags = IFF_EBRIDGE;