bridge: Fix LRO crash with tun

[safe/jmp/linux-2.6] / net / bridge / br_if.c

diff --git a/net/bridge/br_if.c b/net/bridge/br_if.c
index c2397f5..727c5c5 100644 (file)
--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -5,8 +5,6 @@
  *     Authors:
  *     Lennert Buytenhek               <buytenh@gnu.org>
  *
- *     $Id: br_if.c,v 1.7 2001/12/24 00:59:55 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
@@ -170,7 +168,7 @@ static void del_br(struct net_bridge *br)
        unregister_netdevice(br->dev);
 }
 
-static struct net_device *new_bridge_dev(const char *name)
+static struct net_device *new_bridge_dev(struct net *net, const char *name)
 {
        struct net_bridge *br;
        struct net_device *dev;
@@ -180,6 +178,7 @@ static struct net_device *new_bridge_dev(const char *name)
 
        if (!dev)
                return NULL;
+       dev_net_set(dev, net);
 
        br = netdev_priv(dev);
        br->dev = dev;
@@ -204,6 +203,9 @@ static struct net_device *new_bridge_dev(const char *name)
        br->topology_change = 0;
        br->topology_change_detected = 0;
        br->ageing_time = 300 * HZ;
+
+       br_netfilter_rtable_init(br);
+
        INIT_LIST_HEAD(&br->age_list);
 
        br_stp_timer_init(br);
@@ -261,12 +263,12 @@ static struct net_bridge_port *new_nbp(struct net_bridge *br,
        return p;
 }
 
-int br_add_bridge(const char *name)
+int br_add_bridge(struct net *net, const char *name)
 {
        struct net_device *dev;
        int ret;
 
-       dev = new_bridge_dev(name);
+       dev = new_bridge_dev(net, name);
        if (!dev)
                return -ENOMEM;
 
@@ -293,13 +295,13 @@ out_free:
        goto out;
 }
 
-int br_del_bridge(const char *name)
+int br_del_bridge(struct net *net, const char *name)
 {
        struct net_device *dev;
        int ret = 0;
 
        rtnl_lock();
-       dev = __dev_get_by_name(&init_net, name);
+       dev = __dev_get_by_name(net, name);
        if (dev == NULL)
                ret =  -ENXIO;  /* Could not find device */
 
@@ -345,15 +347,21 @@ int br_min_mtu(const struct net_bridge *br)
 void br_features_recompute(struct net_bridge *br)
 {
        struct net_bridge_port *p;
-       unsigned long features;
+       unsigned long features, mask;
 
-       features = br->feature_mask;
+       features = mask = br->feature_mask;
+       if (list_empty(&br->port_list))
+               goto done;
+
+       features &= ~NETIF_F_ONE_FOR_ALL;
 
        list_for_each_entry(p, &br->port_list, list) {
-               features = netdev_compute_features(features, p->dev->features);
+               features = netdev_increment_features(features,
+                                                    p->dev->features, mask);
        }
 
-       br->dev->features = features;
+done:
+       br->dev->features = netdev_fix_features(features, NULL);
 }
 
 /* called with RTNL */
@@ -365,7 +373,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
        if (dev->flags & IFF_LOOPBACK || dev->type != ARPHRD_ETHER)
                return -EINVAL;
 
-       if (dev->hard_start_xmit == br_dev_xmit)
+       if (dev->netdev_ops->ndo_start_xmit == br_dev_xmit)
                return -ELOOP;
 
        if (dev->br_port != NULL)
@@ -375,6 +383,10 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
        if (IS_ERR(p))
                return PTR_ERR(p);
 
+       err = dev_set_promiscuity(dev, 1);
+       if (err)
+               goto put_back;
+
        err = kobject_init_and_add(&p->kobj, &brport_ktype, &(dev->dev.kobj),
                                   SYSFS_BRIDGE_PORT_ATTR);
        if (err)
@@ -389,7 +401,7 @@ int br_add_if(struct net_bridge *br, struct net_device *dev)
                goto err2;
 
        rcu_assign_pointer(dev->br_port, p);
-       dev_set_promiscuity(dev, 1);
+       dev_disable_lro(dev);
 
        list_add_rcu(&p->list, &br->port_list);
 
@@ -413,12 +425,12 @@ err2:
        br_fdb_delete_by_port(br, p, 1);
 err1:
        kobject_del(&p->kobj);
-       goto put_back;
 err0:
        kobject_put(&p->kobj);
-
+       dev_set_promiscuity(dev, -1);
 put_back:
        dev_put(dev);
+       kfree(p);
        return err;
 }
 
@@ -440,14 +452,18 @@ int br_del_if(struct net_bridge *br, struct net_device *dev)
        return 0;
 }
 
-void __exit br_cleanup_bridges(void)
+void br_net_exit(struct net *net)
 {
-       struct net_device *dev, *nxt;
+       struct net_device *dev;
 
        rtnl_lock();
-       for_each_netdev_safe(&init_net, dev, nxt)
-               if (dev->priv_flags & IFF_EBRIDGE)
-                       del_br(dev->priv);
+restart:
+       for_each_netdev(net, dev) {
+               if (dev->priv_flags & IFF_EBRIDGE) {
+                       del_br(netdev_priv(dev));
+                       goto restart;
+               }
+       }
        rtnl_unlock();
 
 }