diff options
| -rw-r--r-- | net/bridge/br_device.c | 28 | ||||
| -rw-r--r-- | net/bridge/br_private.h | 1 | ||||
| -rw-r--r-- | net/bridge/br_stp_if.c | 3 |
3 files changed, 28 insertions, 4 deletions
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c index f564ee99782..f7a66abf5de 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; } diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h index bdf95a74d8c..2c249486476 100644 --- a/net/bridge/br_private.h +++ b/net/bridge/br_private.h @@ -201,6 +201,7 @@ extern void br_stp_disable_bridge(struct net_bridge *br); extern void br_stp_enable_port(struct net_bridge_port *p); extern void br_stp_disable_port(struct net_bridge_port *p); extern void br_stp_recalculate_bridge_id(struct net_bridge *br); +extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); extern void br_stp_set_bridge_priority(struct net_bridge *br, u16 newprio); extern void br_stp_set_port_priority(struct net_bridge_port *p, diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c index ac09b6a2352..2d2e969ae25 100644 --- a/net/bridge/br_stp_if.c +++ b/net/bridge/br_stp_if.c @@ -120,8 +120,7 @@ void br_stp_disable_port(struct net_bridge_port *p) } /* called under bridge lock */ -static void br_stp_change_bridge_id(struct net_bridge *br, - const unsigned char *addr) +void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *addr) { unsigned char oldaddr[6]; struct net_bridge_port *p; |