Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Device handling code | |
3 | * Linux ethernet bridge | |
4 | * | |
5 | * Authors: | |
6 | * Lennert Buytenhek <buytenh@gnu.org> | |
7 | * | |
8 | * $Id: br_device.c,v 1.6 2001/12/24 00:59:55 davem Exp $ | |
9 | * | |
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. | |
14 | */ | |
15 | ||
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" | |
21 | ||
22 | static struct net_device_stats *br_dev_get_stats(struct net_device *dev) | |
23 | { | |
81d35307 | 24 | struct net_bridge *br = netdev_priv(dev); |
1da177e4 LT |
25 | return &br->statistics; |
26 | } | |
27 | ||
28 | int br_dev_xmit(struct sk_buff *skb, struct net_device *dev) | |
29 | { | |
30 | struct net_bridge *br = netdev_priv(dev); | |
31 | const unsigned char *dest = skb->data; | |
32 | struct net_bridge_fdb_entry *dst; | |
33 | ||
34 | br->statistics.tx_packets++; | |
35 | br->statistics.tx_bytes += skb->len; | |
36 | ||
37 | skb->mac.raw = skb->data; | |
38 | skb_pull(skb, ETH_HLEN); | |
39 | ||
40 | rcu_read_lock(); | |
41 | if (dest[0] & 1) | |
42 | br_flood_deliver(br, skb, 0); | |
43 | else if ((dst = __br_fdb_get(br, dest)) != NULL) | |
44 | br_deliver(dst->dst, skb); | |
45 | else | |
46 | br_flood_deliver(br, skb, 0); | |
47 | ||
48 | rcu_read_unlock(); | |
49 | return 0; | |
50 | } | |
51 | ||
52 | static int br_dev_open(struct net_device *dev) | |
53 | { | |
81d35307 | 54 | struct net_bridge *br = netdev_priv(dev); |
1da177e4 | 55 | |
81d35307 SH |
56 | br_features_recompute(br); |
57 | netif_start_queue(dev); | |
58 | br_stp_enable_bridge(br); | |
1da177e4 LT |
59 | |
60 | return 0; | |
61 | } | |
62 | ||
63 | static void br_dev_set_multicast_list(struct net_device *dev) | |
64 | { | |
65 | } | |
66 | ||
67 | static int br_dev_stop(struct net_device *dev) | |
68 | { | |
81d35307 | 69 | br_stp_disable_bridge(netdev_priv(dev)); |
1da177e4 LT |
70 | |
71 | netif_stop_queue(dev); | |
72 | ||
73 | return 0; | |
74 | } | |
75 | ||
76 | static int br_change_mtu(struct net_device *dev, int new_mtu) | |
77 | { | |
81d35307 | 78 | if (new_mtu < 68 || new_mtu > br_min_mtu(netdev_priv(dev))) |
1da177e4 LT |
79 | return -EINVAL; |
80 | ||
81 | dev->mtu = new_mtu; | |
82 | return 0; | |
83 | } | |
84 | ||
85 | void br_dev_setup(struct net_device *dev) | |
86 | { | |
87 | memset(dev->dev_addr, 0, ETH_ALEN); | |
88 | ||
89 | ether_setup(dev); | |
90 | ||
91 | dev->do_ioctl = br_dev_ioctl; | |
92 | dev->get_stats = br_dev_get_stats; | |
93 | dev->hard_start_xmit = br_dev_xmit; | |
94 | dev->open = br_dev_open; | |
95 | dev->set_multicast_list = br_dev_set_multicast_list; | |
96 | dev->change_mtu = br_change_mtu; | |
97 | dev->destructor = free_netdev; | |
98 | SET_MODULE_OWNER(dev); | |
99 | dev->stop = br_dev_stop; | |
100 | dev->tx_queue_len = 0; | |
101 | dev->set_mac_address = NULL; | |
102 | dev->priv_flags = IFF_EBRIDGE; | |
103 | } |