git://bbs.cooldavid.org / net-next-2.6.git / blame
| 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 | } |