Add bridge preferred mac patch

git-svn-id: svn://svn.openwrt.org/openwrt/branches/buildroot-ng/openwrt@4305 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/target/linux/generic-2.4/patches/228-bridge-preferred.patch b/target/linux/generic-2.4/patches/228-bridge-preferred.patch
new file mode 100644 (file)
index 0000000..c7a4798
--- /dev/null
+++ b/target/linux/generic-2.4/patches/228-bridge-preferred.patch
@@ -0,0 +1,61 @@
+diff -rup linux-rb24/net/bridge/br_device.c linux-rb24bpatch/net/bridge/br_device.c
+--- linux-rb24/net/bridge/br_device.c  2002-02-25 11:38:14.000000000 -0800
++++ linux-rb24bpatch/net/bridge/br_device.c    2005-07-05 02:09:17.000000000 -0700
+@@ -121,6 +121,23 @@ static int br_dev_accept_fastpath(struct
+       return -1;
+ }
+ 
++static int
++br_set_mac_address(struct net_device *dev, void *addr)
++{
++      struct net_bridge *br = dev->priv;
++      struct sockaddr *sa = (struct sockaddr *) addr;
++
++      write_lock_bh(&br->lock);
++
++      memcpy(br->preferred_id.addr, sa->sa_data, ETH_ALEN);
++
++      br_stp_recalculate_bridge_id(br);
++
++      write_unlock_bh(&br->lock);
++
++      return 0;
++}
++
+ void br_dev_setup(struct net_device *dev)
+ {
+       memset(dev->dev_addr, 0, ETH_ALEN);
+@@ -133,5 +150,5 @@ void br_dev_setup(struct net_device *dev
+       dev->stop = br_dev_stop;
+       dev->accept_fastpath = br_dev_accept_fastpath;
+       dev->tx_queue_len = 0;
+-      dev->set_mac_address = NULL;
++      dev->set_mac_address = br_set_mac_address;
+ }
+diff -rup linux-rb24/net/bridge/br_private.h linux-rb24bpatch/net/bridge/br_private.h
+--- linux-rb24/net/bridge/br_private.h 2004-08-07 16:26:06.000000000 -0700
++++ linux-rb24bpatch/net/bridge/br_private.h   2005-07-05 02:12:56.000000000 -0700
+@@ -95,6 +95,7 @@ struct net_bridge
+       int                             hello_time;
+       int                             forward_delay;
+       bridge_id                       bridge_id;
++      bridge_id                       preferred_id;
+       int                             bridge_max_age;
+       int                             bridge_hello_time;
+       int                             bridge_forward_delay;
+diff -rup linux-rb24/net/bridge/br_stp_if.c linux-rb24bpatch/net/bridge/br_stp_if.c
+--- linux-rb24/net/bridge/br_stp_if.c  2001-04-19 08:38:50.000000000 -0700
++++ linux-rb24bpatch/net/bridge/br_stp_if.c    2005-07-05 02:22:11.000000000 -0700
+@@ -162,6 +162,12 @@ void br_stp_recalculate_bridge_id(struct
+ 
+       p = br->port_list;
+       while (p != NULL) {
++              /* match against preferred address first */
++              if (memcmp(p->dev->dev_addr,br->preferred_id.addr,ETH_ALEN) == 0) {
++                      addr = p->dev->dev_addr;
++                      break;
++              }
++
+               if (addr == br_mac_zero ||
+                   memcmp(p->dev->dev_addr, addr, ETH_ALEN) < 0)
+                       addr = p->dev->dev_addr;