Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 87 insertions, 0 deletions

diff --git a/net/bridge/br_notify.c b/net/bridge/br_notify.c
new file mode 100644
index 000000000000..f8fb49e34764
--- /dev/null
+++ b/net/bridge/br_notify.c
@@ -0,0 +1,87 @@
+/*
+ *      Device event handling
+ *      Linux ethernet bridge
+ *
+ *      Authors:
+ *      Lennert Buytenhek               <buytenh@gnu.org>
+ *
+ *      $Id: br_notify.c,v 1.2 2000/02/21 15:51:34 davem Exp $
+ *
+ *      This program is free software; you can redistribute it and/or
+ *      modify it under the terms of the GNU General Public License
+ *      as published by the Free Software Foundation; either version
+ *      2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+
+#include "br_private.h"
+
+static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr);
+
+struct notifier_block br_device_notifier = {
+        .notifier_call = br_device_event
+};
+
+/*
+ * Handle changes in state of network devices enslaved to a bridge.
+ * 
+ * Note: don't care about up/down if bridge itself is down, because
+ *     port state is checked when bridge is brought up.
+ */
+static int br_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
+{
+        struct net_device *dev = ptr;
+        struct net_bridge_port *p = dev->br_port;
+        struct net_bridge *br;
+
+        /* not a port of a bridge */
+        if (p == NULL)
+                return NOTIFY_DONE;
+
+        br = p->br;
+
+        spin_lock_bh(&br->lock);
+        switch (event) {
+        case NETDEV_CHANGEMTU:
+                dev_set_mtu(br->dev, br_min_mtu(br));
+                break;
+
+        case NETDEV_CHANGEADDR:
+                br_fdb_changeaddr(p, dev->dev_addr);
+                br_stp_recalculate_bridge_id(br);
+                break;
+
+        case NETDEV_CHANGE:     /* device is up but carrier changed */
+                if (!(br->dev->flags & IFF_UP))
+                        break;
+
+                if (netif_carrier_ok(dev)) {
+                        if (p->state == BR_STATE_DISABLED)
+                                br_stp_enable_port(p);
+                } else {
+                        if (p->state != BR_STATE_DISABLED)
+                                br_stp_disable_port(p);
+                }
+                break;
+
+        case NETDEV_DOWN:
+                if (br->dev->flags & IFF_UP)
+                        br_stp_disable_port(p);
+                break;
+
+        case NETDEV_UP:
+                if (netif_carrier_ok(dev) && (br->dev->flags & IFF_UP)) 
+                        br_stp_enable_port(p);
+                break;
+
+        case NETDEV_UNREGISTER:
+                spin_unlock_bh(&br->lock);
+                br_del_if(br, dev);
+                goto done;
+        } 
+        spin_unlock_bh(&br->lock);
+
+ done:
+        return NOTIFY_DONE;
+}