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 | { | |
24 | struct net_bridge *br; | |
25 | ||
26 | br = dev->priv; | |
27 | ||
28 | return &br->statistics; | |
29 | } | |
30 | ||
31 | int br_dev_xmit(struct sk_buff *skb, struct net_device *dev) | |
32 | { | |
33 | struct net_bridge *br = netdev_priv(dev); | |
34 | const unsigned char *dest = skb->data; | |
35 | struct net_bridge_fdb_entry *dst; | |
36 | ||
37 | br->statistics.tx_packets++; | |
38 | br->statistics.tx_bytes += skb->len; | |
39 | ||
40 | skb->mac.raw = skb->data; | |
41 | skb_pull(skb, ETH_HLEN); | |
42 | ||
43 | rcu_read_lock(); | |
44 | if (dest[0] & 1) | |
45 | br_flood_deliver(br, skb, 0); | |
46 | else if ((dst = __br_fdb_get(br, dest)) != NULL) | |
47 | br_deliver(dst->dst, skb); | |
48 | else | |
49 | br_flood_deliver(br, skb, 0); | |
50 | ||
51 | rcu_read_unlock(); | |
52 | return 0; | |
53 | } | |
54 | ||
55 | static int br_dev_open(struct net_device *dev) | |
56 | { | |
57 | netif_start_queue(dev); | |
58 | ||
59 | br_stp_enable_bridge(dev->priv); | |
60 | ||
61 | return 0; | |
62 | } | |
63 | ||
64 | static void br_dev_set_multicast_list(struct net_device *dev) | |
65 | { | |
66 | } | |
67 | ||
68 | static int br_dev_stop(struct net_device *dev) | |
69 | { | |
70 | br_stp_disable_bridge(dev->priv); | |
71 | ||
72 | netif_stop_queue(dev); | |
73 | ||
74 | return 0; | |
75 | } | |
76 | ||
77 | static int br_change_mtu(struct net_device *dev, int new_mtu) | |
78 | { | |
79 | if ((new_mtu < 68) || new_mtu > br_min_mtu(dev->priv)) | |
80 | return -EINVAL; | |
81 | ||
82 | dev->mtu = new_mtu; | |
83 | return 0; | |
84 | } | |
85 | ||
86 | void br_dev_setup(struct net_device *dev) | |
87 | { | |
88 | memset(dev->dev_addr, 0, ETH_ALEN); | |
89 | ||
90 | ether_setup(dev); | |
91 | ||
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; | |
104 | } |