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authorJiri Pirko <jpirko@redhat.com>2010-02-04 10:22:25 -0800
committerDavid S. Miller <davem@davemloft.net>2010-02-04 10:22:25 -0800
commit6683ece36e3531fc8c75f69e7165c5f20930be88 (patch)
tree4dd9fe9057248577a75eb60ae9f83a999f062b02
parent1b924032533033a4dae1a239981677bdae21949b (diff)
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: Jiri Pirko <jpirko@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--include/linux/netdevice.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 622ba5aa93c..e535700a3b7 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -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 */