4 files changed, 56 insertions, 16 deletions

diff --git a/net/core/dev_mcast.c b/net/core/dev_mcast.c
index fd91569e2394..3dc295beb483 100644
--- a/net/core/dev_mcast.c
+++ b/net/core/dev_mcast.c
@@ -97,8 +97,9 @@ int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
 
 	netif_addr_lock_bh(dev);
 	if (alen != dev->addr_len)
-		return -EINVAL;
-	err = __dev_addr_add(&dev->mc_list, &dev->mc_count, addr, alen, glbl);
+		err = -EINVAL;
+	else
+		err = __dev_addr_add(&dev->mc_list, &dev->mc_count, addr, alen, glbl);
 	if (!err)
 		__dev_set_rx_mode(dev);
 	netif_addr_unlock_bh(dev);
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index d102f6d9abdc..6cee6434da67 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -771,6 +771,8 @@ static __inline__ int neigh_max_probes(struct neighbour *n)
 }
 
 static void neigh_invalidate(struct neighbour *neigh)
+	__releases(neigh->lock)
+	__acquires(neigh->lock)
 {
 	struct sk_buff *skb;
 
diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 10a6a604bf32..678909281648 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -187,6 +187,16 @@ struct ic_device {
 static struct ic_device *ic_first_dev __initdata = NULL;/* List of open device */
 static struct net_device *ic_dev __initdata = NULL;	/* Selected device */
 
+static bool __init ic_device_match(struct net_device *dev)
+{
+	if (user_dev_name[0] ? !strcmp(dev->name, user_dev_name) :
+	    (!(dev->flags & IFF_LOOPBACK) &&
+	     (dev->flags & (IFF_POINTOPOINT|IFF_BROADCAST)) &&
+	     strncmp(dev->name, "dummy", 5)))
+		return true;
+	return false;
+}
+
 static int __init ic_open_devs(void)
 {
 	struct ic_device *d, **last;
@@ -207,10 +217,7 @@ static int __init ic_open_devs(void)
 	for_each_netdev(&init_net, dev) {
 		if (dev->flags & IFF_LOOPBACK)
 			continue;
-		if (user_dev_name[0] ? !strcmp(dev->name, user_dev_name) :
-		    (!(dev->flags & IFF_LOOPBACK) &&
-		     (dev->flags & (IFF_POINTOPOINT|IFF_BROADCAST)) &&
-		     strncmp(dev->name, "dummy", 5))) {
+		if (ic_device_match(dev)) {
 			int able = 0;
 			if (dev->mtu >= 364)
 				able |= IC_BOOTP;
@@ -228,7 +235,7 @@ static int __init ic_open_devs(void)
 			}
 			if (!(d = kmalloc(sizeof(struct ic_device), GFP_KERNEL))) {
 				rtnl_unlock();
-				return -1;
+				return -ENOMEM;
 			}
 			d->dev = dev;
 			*last = d;
@@ -253,7 +260,7 @@ static int __init ic_open_devs(void)
 			printk(KERN_ERR "IP-Config: Device `%s' not found.\n", user_dev_name);
 		else
 			printk(KERN_ERR "IP-Config: No network devices available.\n");
-		return -1;
+		return -ENODEV;
 	}
 	return 0;
 }
@@ -1303,6 +1310,32 @@ __be32 __init root_nfs_parse_addr(char *name)
 	return addr;
 }
 
+#define DEVICE_WAIT_MAX		12 /* 12 seconds */
+
+static int __init wait_for_devices(void)
+{
+	int i;
+
+	msleep(CONF_PRE_OPEN);
+	for (i = 0; i < DEVICE_WAIT_MAX; i++) {
+		struct net_device *dev;
+		int found = 0;
+
+		rtnl_lock();
+		for_each_netdev(&init_net, dev) {
+			if (ic_device_match(dev)) {
+				found = 1;
+				break;
+			}
+		}
+		rtnl_unlock();
+		if (found)
+			return 0;
+		ssleep(1);
+	}
+	return -ENODEV;
+}
+
 /*
  *	IP Autoconfig dispatcher.
  */
@@ -1313,6 +1346,7 @@ static int __init ip_auto_config(void)
 #ifdef IPCONFIG_DYNAMIC
 	int retries = CONF_OPEN_RETRIES;
 #endif
+	int err;
 
 #ifdef CONFIG_PROC_FS
 	proc_net_fops_create(&init_net, "pnp", S_IRUGO, &pnp_seq_fops);
@@ -1325,12 +1359,15 @@ static int __init ip_auto_config(void)
 #ifdef IPCONFIG_DYNAMIC
  try_try_again:
 #endif
-	/* Give hardware a chance to settle */
-	msleep(CONF_PRE_OPEN);
+	/* Wait for devices to appear */
+	err = wait_for_devices();
+	if (err)
+		return err;
 
 	/* Setup all network devices */
-	if (ic_open_devs() < 0)
-		return -1;
+	err = ic_open_devs();
+	if (err)
+		return err;
 
 	/* Give drivers a chance to settle */
 	ssleep(CONF_POST_OPEN);
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 8d51d39ad1bb..70df40980a87 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -1651,15 +1651,15 @@ int tcp_v4_rcv(struct sk_buff *skb)
 	if (!sk)
 		goto no_tcp_socket;
 
+process:
+	if (sk->sk_state == TCP_TIME_WAIT)
+		goto do_time_wait;
+
 	if (unlikely(iph->ttl < inet_sk(sk)->min_ttl)) {
 		NET_INC_STATS_BH(net, LINUX_MIB_TCPMINTTLDROP);
 		goto discard_and_relse;
 	}
 
-process:
-	if (sk->sk_state == TCP_TIME_WAIT)
-		goto do_time_wait;
-
 	if (!xfrm4_policy_check(sk, XFRM_POLICY_IN, skb))
 		goto discard_and_relse;
 	nf_reset(skb);