1 files changed, 104 insertions, 0 deletions

diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
new file mode 100644
index 000000000000..d9b72fde433c
--- /dev/null
+++ b/net/bridge/br_device.c
@@ -0,0 +1,104 @@
+/*
+ *      Device handling code
+ *      Linux ethernet bridge
+ *
+ *      Authors:
+ *      Lennert Buytenhek               <buytenh@gnu.org>
+ *
+ *      $Id: br_device.c,v 1.6 2001/12/24 00:59:55 davem Exp $
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/netdevice.h>
+#include <linux/module.h>
+#include <asm/uaccess.h>
+#include "br_private.h"
+
+static struct net_device_stats *br_dev_get_stats(struct net_device *dev)
+{
+        struct net_bridge *br;
+
+        br = dev->priv;
+
+        return &br->statistics;
+}
+
+int br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+        struct net_bridge *br = netdev_priv(dev);
+        const unsigned char *dest = skb->data;
+        struct net_bridge_fdb_entry *dst;
+
+        br->statistics.tx_packets++;
+        br->statistics.tx_bytes += skb->len;
+
+        skb->mac.raw = skb->data;
+        skb_pull(skb, ETH_HLEN);
+
+        rcu_read_lock();
+        if (dest[0] & 1) 
+                br_flood_deliver(br, skb, 0);
+        else if ((dst = __br_fdb_get(br, dest)) != NULL)
+                br_deliver(dst->dst, skb);
+        else
+                br_flood_deliver(br, skb, 0);
+
+        rcu_read_unlock();
+        return 0;
+}
+
+static int br_dev_open(struct net_device *dev)
+{
+        netif_start_queue(dev);
+
+        br_stp_enable_bridge(dev->priv);
+
+        return 0;
+}
+
+static void br_dev_set_multicast_list(struct net_device *dev)
+{
+}
+
+static int br_dev_stop(struct net_device *dev)
+{
+        br_stp_disable_bridge(dev->priv);
+
+        netif_stop_queue(dev);
+
+        return 0;
+}
+
+static int br_change_mtu(struct net_device *dev, int new_mtu)
+{
+        if ((new_mtu < 68) || new_mtu > br_min_mtu(dev->priv))
+                return -EINVAL;
+
+        dev->mtu = new_mtu;
+        return 0;
+}
+
+void br_dev_setup(struct net_device *dev)
+{
+        memset(dev->dev_addr, 0, ETH_ALEN);
+
+        ether_setup(dev);
+
+        dev->do_ioctl = br_dev_ioctl;
+        dev->get_stats = br_dev_get_stats;
+        dev->hard_start_xmit = br_dev_xmit;
+        dev->open = br_dev_open;
+        dev->set_multicast_list = br_dev_set_multicast_list;
+        dev->change_mtu = br_change_mtu;
+        dev->destructor = free_netdev;
+        SET_MODULE_OWNER(dev);
+        dev->stop = br_dev_stop;
+        dev->tx_queue_len = 0;
+        dev->set_mac_address = NULL;
+        dev->priv_flags = IFF_EBRIDGE;
+}