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Diffstat (limited to 'net/bridge/br_device.c')
-rw-r--r--net/bridge/br_device.c28
1 files changed, 26 insertions, 2 deletions
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index f564ee99782d..f7a66abf5def 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -15,7 +15,8 @@
#include <linux/kernel.h>
#include <linux/netdevice.h>
-#include <linux/module.h>
+#include <linux/etherdevice.h>
+
#include <asm/uaccess.h>
#include "br_private.h"
@@ -82,6 +83,29 @@ static int br_change_mtu(struct net_device *dev, int new_mtu)
return 0;
}
+/* Allow setting mac address of pseudo-bridge to be same as
+ * any of the bound interfaces
+ */
+static int br_set_mac_address(struct net_device *dev, void *p)
+{
+ struct net_bridge *br = netdev_priv(dev);
+ struct sockaddr *addr = p;
+ struct net_bridge_port *port;
+ int err = -EADDRNOTAVAIL;
+
+ spin_lock_bh(&br->lock);
+ list_for_each_entry(port, &br->port_list, list) {
+ if (!compare_ether_addr(port->dev->dev_addr, addr->sa_data)) {
+ br_stp_change_bridge_id(br, addr->sa_data);
+ err = 0;
+ break;
+ }
+ }
+ spin_unlock_bh(&br->lock);
+
+ return err;
+}
+
void br_dev_setup(struct net_device *dev)
{
memset(dev->dev_addr, 0, ETH_ALEN);
@@ -98,6 +122,6 @@ void br_dev_setup(struct net_device *dev)
SET_MODULE_OWNER(dev);
dev->stop = br_dev_stop;
dev->tx_queue_len = 0;
- dev->set_mac_address = NULL;
+ dev->set_mac_address = br_set_mac_address;
dev->priv_flags = IFF_EBRIDGE;
}