/*
- * Linux NET3: Multicast List maintenance.
+ * Linux NET3: Multicast List maintenance.
*
* Authors:
- * Tim Kordas <tjk@nostromo.eeap.cwru.edu>
+ * Tim Kordas <tjk@nostromo.eeap.cwru.edu>
* Richard Underwood <richard@wuzz.demon.co.uk>
*
* Stir fried together from the IP multicast and CAP patches above
- * Alan Cox <Alan.Cox@linux.org>
+ * Alan Cox <Alan.Cox@linux.org>
*
* Fixes:
* Alan Cox : Update the device on a real delete
/*
- * Device multicast list maintenance.
+ * Device multicast list maintenance.
*
- * This is used both by IP and by the user level maintenance functions.
- * Unlike BSD we maintain a usage count on a given multicast address so
- * that a casual user application can add/delete multicasts used by
+ * This is used both by IP and by the user level maintenance functions.
+ * Unlike BSD we maintain a usage count on a given multicast address so
+ * that a casual user application can add/delete multicasts used by
* protocols without doing damage to the protocols when it deletes the
* entries. It also helps IP as it tracks overlapping maps.
*
/*
* Update the multicast list into the physical NIC controller.
*/
-
+
static void __dev_mc_upload(struct net_device *dev)
{
/* Don't do anything till we up the interface
/*
* Delete a device level multicast
*/
-
+
int dev_mc_delete(struct net_device *dev, void *addr, int alen, int glbl)
{
int err = 0;
* loaded filter is now wrong. Fix it
*/
__dev_mc_upload(dev);
-
+
netif_tx_unlock_bh(dev);
return 0;
}
/*
* Add a device level multicast
*/
-
+
int dev_mc_add(struct net_device *dev, void *addr, int alen, int glbl)
{
int err = 0;
dev->mc_count++;
__dev_mc_upload(dev);
-
+
netif_tx_unlock_bh(dev);
return 0;
void dev_mc_discard(struct net_device *dev)
{
netif_tx_lock_bh(dev);
-
+
while (dev->mc_list != NULL) {
struct dev_mc_list *tmp = dev->mc_list;
dev->mc_list = tmp->next;
read_lock(&dev_base_lock);
for (dev = dev_base; dev; dev = dev->next) {
- if (off++ == *pos)
+ if (off++ == *pos)
return dev;
}
return NULL;