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Diffstat (limited to 'net/bridge/br_device.c')
-rw-r--r--net/bridge/br_device.c104
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;
+}