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Diffstat (limited to 'net')
-rw-r--r--net/bridge/br_device.c1
-rw-r--r--net/bridge/br_private.h2
-rw-r--r--net/bridge/br_stp_if.c4
3 files changed, 7 insertions, 0 deletions
diff --git a/net/bridge/br_device.c b/net/bridge/br_device.c
index a6ffc6c..d9449df 100644
--- a/net/bridge/br_device.c
+++ b/net/bridge/br_device.c
@@ -87,6 +87,7 @@ static int br_set_mac_address(struct net_device *dev, void *p)
spin_lock_bh(&br->lock);
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
br_stp_change_bridge_id(br, addr->sa_data);
+ br->flags |= BR_SET_MAC_ADDR;
spin_unlock_bh(&br->lock);
return 0;
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index 83ff586..8593c9f 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -92,6 +92,8 @@ struct net_bridge
struct hlist_head hash[BR_HASH_SIZE];
struct list_head age_list;
unsigned long feature_mask;
+ unsigned long flags;
+#define BR_SET_MAC_ADDR 0x00000001
/* STP */
bridge_id designated_root;
diff --git a/net/bridge/br_stp_if.c b/net/bridge/br_stp_if.c
index 1a4e5c3..9a52ac5 100644
--- a/net/bridge/br_stp_if.c
+++ b/net/bridge/br_stp_if.c
@@ -214,6 +214,10 @@ void br_stp_recalculate_bridge_id(struct net_bridge *br)
const unsigned char *addr = br_mac_zero;
struct net_bridge_port *p;
+ /* user has chosen a value so keep it */
+ if (br->flags & BR_SET_MAC_ADDR)
+ return;
+
list_for_each_entry(p, &br->port_list, list) {
if (addr == br_mac_zero ||
memcmp(p->dev->dev_addr, addr, ETH_ALEN) < 0)