[PATCH] (1/4) propgate bridge internal MTU changes

[Stephen Hemminger <shemminger@xxxxxxxx>]

Need to propagate MTU changes that the bridge does to it's pseudo interface
up to others. There ends up being a double call to br_min_mtu() but that's
harmless.

Cleans up the EXPORT_SYMBOLS including dev_change_flags which is used by vlan.
Shouldn't be basing exports on kernel config options like this.

Signed-off-by: Stephen Hemminger <shemminger@xxxxxxxx>
 
diff -Nru a/net/bridge/br_if.c b/net/bridge/br_if.c
--- a/net/bridge/br_if.c        2004-07-28 15:33:20 -07:00
+++ b/net/bridge/br_if.c        2004-07-28 15:33:20 -07:00
@@ -295,6 +295,7 @@
        return ret;
 }
 
+/* Mtu of the bridge pseudo-device 1500 or the minimum of the ports */
 int br_min_mtu(const struct net_bridge *br)
 {
        const struct net_bridge_port *p;
@@ -347,7 +348,7 @@
                        br_stp_enable_port(p);
                spin_unlock_bh(&br->lock);
 
-               br->dev->mtu = br_min_mtu(br);
+               dev_set_mtu(br->dev, br_min_mtu(br));
        }
 
        return err;
diff -Nru a/net/bridge/br_notify.c b/net/bridge/br_notify.c
--- a/net/bridge/br_notify.c    2004-07-28 15:33:20 -07:00
+++ b/net/bridge/br_notify.c    2004-07-28 15:33:20 -07:00
@@ -48,7 +48,7 @@
                break;
 
        case NETDEV_CHANGEMTU:
-               br->dev->mtu = br_min_mtu(br);
+               dev_set_mtu(br->dev, br_min_mtu(br));
                break;
 
        case NETDEV_DOWN:
diff -Nru a/net/core/dev.c b/net/core/dev.c
--- a/net/core/dev.c    2004-07-28 15:33:20 -07:00
+++ b/net/core/dev.c    2004-07-28 15:33:20 -07:00
@@ -3426,6 +3426,8 @@
 EXPORT_SYMBOL(dev_remove_pack);
 EXPORT_SYMBOL(dev_set_allmulti);
 EXPORT_SYMBOL(dev_set_promiscuity);
+EXPORT_SYMBOL(dev_change_flags);
+EXPORT_SYMBOL(dev_set_mtu);
 EXPORT_SYMBOL(free_netdev);
 EXPORT_SYMBOL(netdev_boot_setup_check);
 EXPORT_SYMBOL(netdev_set_master);
@@ -3443,10 +3445,7 @@
 #if defined(CONFIG_BRIDGE) || defined(CONFIG_BRIDGE_MODULE)
 EXPORT_SYMBOL(br_handle_frame_hook);
 #endif
-/* for 801q VLAN support */
-#if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
-EXPORT_SYMBOL(dev_change_flags);
-#endif
+
 #ifdef CONFIG_KMOD
 EXPORT_SYMBOL(dev_load);
 #endif