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Commit 6683ece3 authored by Jiri Pirko's avatar Jiri Pirko Committed by David S. Miller
Browse files

net: use helpers to access mc list V2 



This patch introduces the similar helpers as those already done for uc list.
However multicast lists are no list_head lists but "mademanually". The three
macros added by this patch will make the transition of mc_list to list_head
smooth in two steps:

1) convert all drivers to use these macros (with the original iterator of type
   "struct dev_mc_list")
2) once all drivers are converted, convert list type and iterators to "struct
   netdev_hw_addr" in one patch.

>From now on, drivers can (and should) use "netdev_for_each_mc_addr" to iterate
over the addresses with iterator of type "struct netdev_hw_addr". Also macros
"netdev_mc_count" and "netdev_mc_empty" to read list's length. This is the state
which should be reached in all drivers.

Signed-off-by: default avatarJiri Pirko <jpirko@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 1b924032

include/linux/netdevice.h

+6 −0
Original line number Diff line number Diff line
@@ -268,6 +268,12 @@ struct netdev_hw_addr_list { 
#define netdev_for_each_uc_addr(ha, dev) \

	list_for_each_entry(ha, &dev->uc.list, list)



#define netdev_mc_count(dev) ((dev)->mc_count)

#define netdev_mc_empty(dev) (netdev_mc_count(dev) == 0)



#define netdev_for_each_mc_addr(mclist, dev) \

	for (mclist = dev->mc_list; mclist; mclist = mclist->next)



struct hh_cache {

	struct hh_cache *hh_next;	/* Next entry			     */

	atomic_t	hh_refcnt;	/* number of users                   */