X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=net%2Fcore%2Fdev_mcast.c;h=f8a3455f4493f7276fe614af6dbd7c26f4f04cb8;hb=cadc723cc19ce6b881d973d3c04e25ebb83058e6;hp=20330c572610968af449837b1f615a59fd42f9df;hpb=b160292cc216a50fd0cd386b0bda2cd48352c73b;p=linux-2.6-omap-h63xx.git

diff --git a/net/core/dev_mcast.c b/net/core/dev_mcast.c
index 20330c57261..f8a3455f449 100644
--- a/net/core/dev_mcast.c
+++ b/net/core/dev_mcast.c
@@ -41,6 +41,7 @@
 #include <linux/proc_fs.h>
 #include <linux/seq_file.h>
 #include <linux/init.h>
+#include <net/net_namespace.h>
 #include <net/ip.h>
 #include <net/route.h>
 #include <linux/skbuff.h>
@@ -112,32 +113,15 @@ int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
  * 	locked by netif_tx_lock_bh.
  *
  *	This function is intended to be called from the dev->set_multicast_list
- *	function of layered software devices.
+ *	or dev->set_rx_mode function of layered software devices.
  */
 int dev_mc_sync(struct net_device *to, struct net_device *from)
 {
-	struct dev_addr_list *da, *next;
 	int err = 0;
 
 	netif_tx_lock_bh(to);
-	da = from->mc_list;
-	while (da != NULL) {
-		next = da->next;
-		if (!da->da_synced) {
-			err = __dev_addr_add(&to->mc_list, &to->mc_count,
-					     da->da_addr, da->da_addrlen, 0);
-			if (err < 0)
-				break;
-			da->da_synced = 1;
-			da->da_users++;
-		} else if (da->da_users == 1) {
-			__dev_addr_delete(&to->mc_list, &to->mc_count,
-					  da->da_addr, da->da_addrlen, 0);
-			__dev_addr_delete(&from->mc_list, &from->mc_count,
-					  da->da_addr, da->da_addrlen, 0);
-		}
-		da = next;
-	}
+	err = __dev_addr_sync(&to->mc_list, &to->mc_count,
+			      &from->mc_list, &from->mc_count);
 	if (!err)
 		__dev_set_rx_mode(to);
 	netif_tx_unlock_bh(to);
@@ -159,23 +143,11 @@ EXPORT_SYMBOL(dev_mc_sync);
  */
 void dev_mc_unsync(struct net_device *to, struct net_device *from)
 {
-	struct dev_addr_list *da, *next;
-
 	netif_tx_lock_bh(from);
 	netif_tx_lock_bh(to);
 
-	da = from->mc_list;
-	while (da != NULL) {
-		next = da->next;
-		if (!da->da_synced)
-			continue;
-		__dev_addr_delete(&to->mc_list, &to->mc_count,
-				  da->da_addr, da->da_addrlen, 0);
-		da->da_synced = 0;
-		__dev_addr_delete(&from->mc_list, &from->mc_count,
-				  da->da_addr, da->da_addrlen, 0);
-		da = next;
-	}
+	__dev_addr_unsync(&to->mc_list, &to->mc_count,
+			  &from->mc_list, &from->mc_count);
 	__dev_set_rx_mode(to);
 
 	netif_tx_unlock_bh(to);
@@ -184,36 +156,14 @@ void dev_mc_unsync(struct net_device *to, struct net_device *from)
 EXPORT_SYMBOL(dev_mc_unsync);
 
 #ifdef CONFIG_PROC_FS
-static void *dev_mc_seq_start(struct seq_file *seq, loff_t *pos)
-{
-	struct net_device *dev;
-	loff_t off = 0;
-
-	read_lock(&dev_base_lock);
-	for_each_netdev(dev) {
-		if (off++ == *pos)
-			return dev;
-	}
-	return NULL;
-}
-
-static void *dev_mc_seq_next(struct seq_file *seq, void *v, loff_t *pos)
-{
-	++*pos;
-	return next_net_device((struct net_device *)v);
-}
-
-static void dev_mc_seq_stop(struct seq_file *seq, void *v)
-{
-	read_unlock(&dev_base_lock);
-}
-
-
 static int dev_mc_seq_show(struct seq_file *seq, void *v)
 {
 	struct dev_addr_list *m;
 	struct net_device *dev = v;
 
+	if (v == SEQ_START_TOKEN)
+		return 0;
+
 	netif_tx_lock_bh(dev);
 	for (m = dev->mc_list; m; m = m->next) {
 		int i;
@@ -231,15 +181,16 @@ static int dev_mc_seq_show(struct seq_file *seq, void *v)
 }
 
 static const struct seq_operations dev_mc_seq_ops = {
-	.start = dev_mc_seq_start,
-	.next  = dev_mc_seq_next,
-	.stop  = dev_mc_seq_stop,
+	.start = dev_seq_start,
+	.next  = dev_seq_next,
+	.stop  = dev_seq_stop,
 	.show  = dev_mc_seq_show,
 };
 
 static int dev_mc_seq_open(struct inode *inode, struct file *file)
 {
-	return seq_open(file, &dev_mc_seq_ops);
+	return seq_open_net(inode, file, &dev_mc_seq_ops,
+			    sizeof(struct seq_net_private));
 }
 
 static const struct file_operations dev_mc_seq_fops = {
@@ -247,14 +198,31 @@ static const struct file_operations dev_mc_seq_fops = {
 	.open    = dev_mc_seq_open,
 	.read    = seq_read,
 	.llseek  = seq_lseek,
-	.release = seq_release,
+	.release = seq_release_net,
 };
 
 #endif
 
+static int __net_init dev_mc_net_init(struct net *net)
+{
+	if (!proc_net_fops_create(net, "dev_mcast", 0, &dev_mc_seq_fops))
+		return -ENOMEM;
+	return 0;
+}
+
+static void __net_exit dev_mc_net_exit(struct net *net)
+{
+	proc_net_remove(net, "dev_mcast");
+}
+
+static struct pernet_operations __net_initdata dev_mc_net_ops = {
+	.init = dev_mc_net_init,
+	.exit = dev_mc_net_exit,
+};
+
 void __init dev_mcast_init(void)
 {
-	proc_net_fops_create("dev_mcast", 0, &dev_mc_seq_fops);
+	register_pernet_subsys(&dev_mc_net_ops);
 }
 
 EXPORT_SYMBOL(dev_mc_add);