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[PPP] pppoe: Fill in header directly in __pppoe_xmit
[net-next-2.6.git] / net / bridge / br_device.c
CommitLineData
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>
4505a3ef 18#include <linux/etherdevice.h>
edb5e46f 19#include <linux/ethtool.h>
4505a3ef 20
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21#include <asm/uaccess.h>
22#include "br_private.h"
23
24static struct net_device_stats *br_dev_get_stats(struct net_device *dev)
25{
81d35307 26 struct net_bridge *br = netdev_priv(dev);
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27 return &br->statistics;
28}
29
f8ae737d 30/* net device transmit always called with no BH (preempt_disabled) */
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31int 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
459a98ed 40 skb_reset_mac_header(skb);
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41 skb_pull(skb, ETH_HLEN);
42
9d6f229f 43 if (dest[0] & 1)
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44 br_flood_deliver(br, skb, 0);
45 else if ((dst = __br_fdb_get(br, dest)) != NULL)
46 br_deliver(dst->dst, skb);
47 else
48 br_flood_deliver(br, skb, 0);
49
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50 return 0;
51}
52
53static int br_dev_open(struct net_device *dev)
54{
81d35307 55 struct net_bridge *br = netdev_priv(dev);
1da177e4 56
81d35307
SH
57 br_features_recompute(br);
58 netif_start_queue(dev);
59 br_stp_enable_bridge(br);
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60
61 return 0;
62}
63
64static void br_dev_set_multicast_list(struct net_device *dev)
65{
66}
67
68static int br_dev_stop(struct net_device *dev)
69{
81d35307 70 br_stp_disable_bridge(netdev_priv(dev));
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71
72 netif_stop_queue(dev);
73
74 return 0;
75}
76
77static int br_change_mtu(struct net_device *dev, int new_mtu)
78{
81d35307 79 if (new_mtu < 68 || new_mtu > br_min_mtu(netdev_priv(dev)))
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80 return -EINVAL;
81
82 dev->mtu = new_mtu;
83 return 0;
84}
85
ffe1d49c 86/* Allow setting mac address to any valid ethernet address. */
4505a3ef
SH
87static int br_set_mac_address(struct net_device *dev, void *p)
88{
89 struct net_bridge *br = netdev_priv(dev);
90 struct sockaddr *addr = p;
ffe1d49c
SH
91
92 if (!is_valid_ether_addr(addr->sa_data))
93 return -EINVAL;
4505a3ef
SH
94
95 spin_lock_bh(&br->lock);
ffe1d49c
SH
96 memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
97 br_stp_change_bridge_id(br, addr->sa_data);
4505a3ef
SH
98 spin_unlock_bh(&br->lock);
99
ffe1d49c 100 return 0;
4505a3ef
SH
101}
102
edb5e46f
SH
103static void br_getinfo(struct net_device *dev, struct ethtool_drvinfo *info)
104{
105 strcpy(info->driver, "bridge");
106 strcpy(info->version, BR_VERSION);
107 strcpy(info->fw_version, "N/A");
108 strcpy(info->bus_info, "N/A");
109}
110
111static int br_set_sg(struct net_device *dev, u32 data)
112{
113 struct net_bridge *br = netdev_priv(dev);
114
115 if (data)
116 br->feature_mask |= NETIF_F_SG;
117 else
118 br->feature_mask &= ~NETIF_F_SG;
119
120 br_features_recompute(br);
121 return 0;
122}
123
124static int br_set_tso(struct net_device *dev, u32 data)
125{
126 struct net_bridge *br = netdev_priv(dev);
127
128 if (data)
129 br->feature_mask |= NETIF_F_TSO;
130 else
131 br->feature_mask &= ~NETIF_F_TSO;
132
133 br_features_recompute(br);
134 return 0;
135}
136
137static int br_set_tx_csum(struct net_device *dev, u32 data)
138{
139 struct net_bridge *br = netdev_priv(dev);
140
141 if (data)
2c6cc0d8 142 br->feature_mask |= NETIF_F_NO_CSUM;
edb5e46f 143 else
2c6cc0d8 144 br->feature_mask &= ~NETIF_F_ALL_CSUM;
edb5e46f
SH
145
146 br_features_recompute(br);
147 return 0;
148}
149
150static struct ethtool_ops br_ethtool_ops = {
151 .get_drvinfo = br_getinfo,
152 .get_link = ethtool_op_get_link,
153 .get_sg = ethtool_op_get_sg,
154 .set_sg = br_set_sg,
155 .get_tx_csum = ethtool_op_get_tx_csum,
156 .set_tx_csum = br_set_tx_csum,
157 .get_tso = ethtool_op_get_tso,
158 .set_tso = br_set_tso,
159};
160
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161void br_dev_setup(struct net_device *dev)
162{
163 memset(dev->dev_addr, 0, ETH_ALEN);
164
165 ether_setup(dev);
166
167 dev->do_ioctl = br_dev_ioctl;
168 dev->get_stats = br_dev_get_stats;
169 dev->hard_start_xmit = br_dev_xmit;
170 dev->open = br_dev_open;
171 dev->set_multicast_list = br_dev_set_multicast_list;
172 dev->change_mtu = br_change_mtu;
173 dev->destructor = free_netdev;
174 SET_MODULE_OWNER(dev);
9d6f229f 175 SET_ETHTOOL_OPS(dev, &br_ethtool_ops);
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176 dev->stop = br_dev_stop;
177 dev->tx_queue_len = 0;
4505a3ef 178 dev->set_mac_address = br_set_mac_address;
1da177e4 179 dev->priv_flags = IFF_EBRIDGE;
edb5e46f 180
9d6f229f 181 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA |
7f353bf2 182 NETIF_F_GSO_MASK | NETIF_F_NO_CSUM | NETIF_F_LLTX;
1da177e4 183}