net: convert multicast list to list_head

Converts the list and the core manipulating with it to be the same as uc_list.

+uses two functions for adding/removing mc address (normal and "global"
 variant) instead of a function parameter.
+removes dev_mcast.c completely.
+exposes netdev_hw_addr_list_* macros along with __hw_addr_* functions for
 manipulation with lists on a sandbox (used in bonding and 80211 drivers)

Signed-off-by: Jiri Pirko <jpirko@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 42 insertions, 40 deletions

diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 60f0c83192fe..a343a21ba8b9 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -228,25 +228,6 @@ struct netif_rx_stats {
 
 DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat);
 
-struct dev_addr_list {
-        struct dev_addr_list    *next;
-        u8                      da_addr[MAX_ADDR_LEN];
-        u8                      da_addrlen;
-        u8                      da_synced;
-        int                     da_users;
-        int                     da_gusers;
-};
-
-/*
- *      We tag multicasts with these structures.
- */
-
-#define dev_mc_list     dev_addr_list
-#define dmi_addr        da_addr
-#define dmi_addrlen     da_addrlen
-#define dmi_users       da_users
-#define dmi_gusers      da_gusers
-
 struct netdev_hw_addr {
         struct list_head        list;
         unsigned char           addr[MAX_ADDR_LEN];
@@ -255,8 +236,10 @@ struct netdev_hw_addr {
 #define NETDEV_HW_ADDR_T_SAN            2
 #define NETDEV_HW_ADDR_T_SLAVE          3
 #define NETDEV_HW_ADDR_T_UNICAST        4
+#define NETDEV_HW_ADDR_T_MULTICAST      5
         int                     refcount;
         bool                    synced;
+        bool                    global_use;
         struct rcu_head         rcu_head;
 };
 
@@ -265,16 +248,20 @@ struct netdev_hw_addr_list {
         int                     count;
 };
 
-#define netdev_uc_count(dev) ((dev)->uc.count)
-#define netdev_uc_empty(dev) ((dev)->uc.count == 0)
-#define netdev_for_each_uc_addr(ha, dev) \
-        list_for_each_entry(ha, &dev->uc.list, list)
+#define netdev_hw_addr_list_count(l) ((l)->count)
+#define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0)
+#define netdev_hw_addr_list_for_each(ha, l) \
+        list_for_each_entry(ha, &(l)->list, list)
 
-#define netdev_mc_count(dev) ((dev)->mc_count)
-#define netdev_mc_empty(dev) (netdev_mc_count(dev) == 0)
+#define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc)
+#define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc)
+#define netdev_for_each_uc_addr(ha, dev) \
+        netdev_hw_addr_list_for_each(ha, &(dev)->uc)
 
+#define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc)
+#define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc)
 #define netdev_for_each_mc_addr(mclist, dev) \
-        for (mclist = dev->mc_list; mclist; mclist = mclist->next)
+        netdev_hw_addr_list_for_each(ha, &(dev)->mc)
 
 struct hh_cache {
         struct hh_cache *hh_next;       /* Next entry                        */
@@ -862,12 +849,10 @@ struct net_device {
         unsigned char           addr_len;       /* hardware address length      */
         unsigned short          dev_id;         /* for shared network cards */
 
-        struct netdev_hw_addr_list      uc;     /* Secondary unicast
-                                                   mac addresses */
-        int                     uc_promisc;
         spinlock_t              addr_list_lock;
-        struct dev_addr_list    *mc_list;       /* Multicast mac addresses      */
-        int                     mc_count;       /* Number of installed mcasts   */
+        struct netdev_hw_addr_list      uc;     /* Unicast mac addresses */
+        struct netdev_hw_addr_list      mc;     /* Multicast mac addresses */
+        int                     uc_promisc;
         unsigned int            promiscuity;
         unsigned int            allmulti;
 
@@ -1980,6 +1965,22 @@ extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
 extern int              register_netdev(struct net_device *dev);
 extern void             unregister_netdev(struct net_device *dev);
 
+/* General hardware address lists handling functions */
+extern int __hw_addr_add_multiple(struct netdev_hw_addr_list *to_list,
+                                  struct netdev_hw_addr_list *from_list,
+                                  int addr_len, unsigned char addr_type);
+extern void __hw_addr_del_multiple(struct netdev_hw_addr_list *to_list,
+                                   struct netdev_hw_addr_list *from_list,
+                                   int addr_len, unsigned char addr_type);
+extern int __hw_addr_sync(struct netdev_hw_addr_list *to_list,
+                          struct netdev_hw_addr_list *from_list,
+                          int addr_len);
+extern void __hw_addr_unsync(struct netdev_hw_addr_list *to_list,
+                             struct netdev_hw_addr_list *from_list,
+                             int addr_len);
+extern void __hw_addr_flush(struct netdev_hw_addr_list *list);
+extern void __hw_addr_init(struct netdev_hw_addr_list *list);
+
 /* Functions used for device addresses handling */
 extern int dev_addr_add(struct net_device *dev, unsigned char *addr,
                         unsigned char addr_type);
@@ -2002,18 +2003,19 @@ extern void dev_uc_unsync(struct net_device *to, struct net_device *from);
 extern void dev_uc_flush(struct net_device *dev);
 extern void dev_uc_init(struct net_device *dev);
 
+/* Functions used for multicast addresses handling */
+extern int dev_mc_add(struct net_device *dev, unsigned char *addr);
+extern int dev_mc_add_global(struct net_device *dev, unsigned char *addr);
+extern int dev_mc_del(struct net_device *dev, unsigned char *addr);
+extern int dev_mc_del_global(struct net_device *dev, unsigned char *addr);
+extern int dev_mc_sync(struct net_device *to, struct net_device *from);
+extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
+extern void dev_mc_flush(struct net_device *dev);
+extern void dev_mc_init(struct net_device *dev);
+
 /* Functions used for secondary unicast and multicast support */
 extern void             dev_set_rx_mode(struct net_device *dev);
 extern void             __dev_set_rx_mode(struct net_device *dev);
-extern int              dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);
-extern int              dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly);
-extern int              dev_mc_sync(struct net_device *to, struct net_device *from);
-extern void             dev_mc_unsync(struct net_device *to, struct net_device *from);
-extern void             dev_addr_discard(struct net_device *dev);
-extern int              __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all);
-extern int              __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly);
-extern int              __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
-extern void             __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
 extern int              dev_set_promiscuity(struct net_device *dev, int inc);
 extern int              dev_set_allmulti(struct net_device *dev, int inc);
 extern void             netdev_state_change(struct net_device *dev);