[NET]: Rework dev_base via list_head (v3)

[safe/jmp/linux-2.6] / net / decnet / dn_dev.c

diff --git a/net/decnet/dn_dev.c b/net/decnet/dn_dev.c
index 95871a6..764a56a 100644 (file)
--- a/net/decnet/dn_dev.c
+++ b/net/decnet/dn_dev.c
@@ -799,10 +799,10 @@ static int dn_nl_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
        skip_ndevs = cb->args[0];
        skip_naddr = cb->args[1];
 
-       read_lock(&dev_base_lock);
-       for (dev = dev_base, idx = 0; dev; dev = dev->next, idx++) {
+       idx = 0;
+       for_each_netdev(dev) {
                if (idx < skip_ndevs)
-                       continue;
+                       goto cont;
                else if (idx > skip_ndevs) {
                        /* Only skip over addresses for first dev dumped
                         * in this iteration (idx == skip_ndevs) */
@@ -810,22 +810,22 @@ static int dn_nl_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
                }
 
                if ((dn_db = dev->dn_ptr) == NULL)
-                       continue;
+                       goto cont;
 
                for (ifa = dn_db->ifa_list, dn_idx = 0; ifa;
                     ifa = ifa->ifa_next, dn_idx++) {
                        if (dn_idx < skip_naddr)
-                               continue;
+                               goto cont;
 
                        if (dn_nl_fill_ifaddr(skb, ifa, NETLINK_CB(cb->skb).pid,
                                              cb->nlh->nlmsg_seq, RTM_NEWADDR,
                                              NLM_F_MULTI) < 0)
                                goto done;
                }
+cont:
+               idx++;
        }
 done:
-       read_unlock(&dev_base_lock);
-
        cb->args[0] = idx;
        cb->args[1] = dn_idx;
 
@@ -1299,7 +1299,7 @@ void dn_dev_devices_off(void)
        struct net_device *dev;
 
        rtnl_lock();
-       for(dev = dev_base; dev; dev = dev->next)
+       for_each_netdev(dev)
                dn_dev_down(dev);
        rtnl_unlock();
 
@@ -1310,7 +1310,7 @@ void dn_dev_devices_on(void)
        struct net_device *dev;
 
        rtnl_lock();
-       for(dev = dev_base; dev; dev = dev->next) {
+       for_each_netdev(dev) {
                if (dev->flags & IFF_UP)
                        dn_dev_up(dev);
        }
@@ -1328,62 +1328,56 @@ int unregister_dnaddr_notifier(struct notifier_block *nb)
 }
 
 #ifdef CONFIG_PROC_FS
-static inline struct net_device *dn_dev_get_next(struct seq_file *seq, struct net_device *dev)
+static inline int is_dn_dev(struct net_device *dev)
 {
-       do {
-               dev = dev->next;
-       } while(dev && !dev->dn_ptr);
-
-       return dev;
+       return dev->dn_ptr != NULL;
 }
 
-static struct net_device *dn_dev_get_idx(struct seq_file *seq, loff_t pos)
+static void *dn_dev_seq_start(struct seq_file *seq, loff_t *pos)
 {
+       int i;
        struct net_device *dev;
 
-       dev = dev_base;
-       if (dev && !dev->dn_ptr)
-               dev = dn_dev_get_next(seq, dev);
-       if (pos) {
-               while(dev && (dev = dn_dev_get_next(seq, dev)))
-                       --pos;
-       }
-       return dev;
-}
+       read_lock(&dev_base_lock);
 
-static void *dn_dev_seq_start(struct seq_file *seq, loff_t *pos)
-{
-       if (*pos) {
-               struct net_device *dev;
-               read_lock(&dev_base_lock);
-               dev = dn_dev_get_idx(seq, *pos - 1);
-               if (dev == NULL)
-                       read_unlock(&dev_base_lock);
-               return dev;
+       if (*pos == 0)
+               return SEQ_START_TOKEN;
+
+       i = 1;
+       for_each_netdev(dev) {
+               if (!is_dn_dev(dev))
+                       continue;
+
+               if (i++ == *pos)
+                       return dev;
        }
-       return SEQ_START_TOKEN;
+
+       return NULL;
 }
 
 static void *dn_dev_seq_next(struct seq_file *seq, void *v, loff_t *pos)
 {
-       struct net_device *dev = v;
-       loff_t one = 1;
+       struct net_device *dev;
 
-       if (v == SEQ_START_TOKEN) {
-               dev = dn_dev_seq_start(seq, &one);
-       } else {
-               dev = dn_dev_get_next(seq, dev);
-               if (dev == NULL)
-                       read_unlock(&dev_base_lock);
-       }
        ++*pos;
-       return dev;
+
+       dev = (struct net_device *)v;
+       if (v == SEQ_START_TOKEN)
+               dev = net_device_entry(&dev_base_head);
+
+       for_each_netdev_continue(dev) {
+               if (!is_dn_dev(dev))
+                       continue;
+
+               return dev;
+       }
+
+       return NULL;
 }
 
 static void dn_dev_seq_stop(struct seq_file *seq, void *v)
 {
-       if (v && v != SEQ_START_TOKEN)
-               read_unlock(&dev_base_lock);
+       read_unlock(&dev_base_lock);
 }
 
 static char *dn_type2asc(char type)
@@ -1447,24 +1441,6 @@ static const struct file_operations dn_dev_seq_fops = {
 
 #endif /* CONFIG_PROC_FS */
 
-static struct rtnetlink_link dnet_rtnetlink_table[RTM_NR_MSGTYPES] =
-{
-       [RTM_NEWADDR  - RTM_BASE] = { .doit     = dn_nl_newaddr,        },
-       [RTM_DELADDR  - RTM_BASE] = { .doit     = dn_nl_deladdr,        },
-       [RTM_GETADDR  - RTM_BASE] = { .dumpit   = dn_nl_dump_ifaddr,    },
-#ifdef CONFIG_DECNET_ROUTER
-       [RTM_NEWROUTE - RTM_BASE] = { .doit     = dn_fib_rtm_newroute,  },
-       [RTM_DELROUTE - RTM_BASE] = { .doit     = dn_fib_rtm_delroute,  },
-       [RTM_GETROUTE - RTM_BASE] = { .doit     = dn_cache_getroute,
-                                     .dumpit   = dn_fib_dump,          },
-       [RTM_GETRULE  - RTM_BASE] = { .dumpit   = dn_fib_dump_rules,    },
-#else
-       [RTM_GETROUTE - RTM_BASE] = { .doit     = dn_cache_getroute,
-                                     .dumpit   = dn_cache_dump,        },
-#endif
-
-};
-
 static int __initdata addr[2];
 module_param_array(addr, int, NULL, 0444);
 MODULE_PARM_DESC(addr, "The DECnet address of this machine: area,node");
@@ -1485,7 +1461,9 @@ void __init dn_dev_init(void)
 
        dn_dev_devices_on();
 
-       rtnetlink_links[PF_DECnet] = dnet_rtnetlink_table;
+       rtnl_register(PF_DECnet, RTM_NEWADDR, dn_nl_newaddr, NULL);
+       rtnl_register(PF_DECnet, RTM_DELADDR, dn_nl_deladdr, NULL);
+       rtnl_register(PF_DECnet, RTM_GETADDR, NULL, dn_nl_dump_ifaddr);
 
        proc_net_fops_create("decnet_dev", S_IRUGO, &dn_dev_seq_fops);
 
@@ -1500,8 +1478,6 @@ void __init dn_dev_init(void)
 
 void __exit dn_dev_cleanup(void)
 {
-       rtnetlink_links[PF_DECnet] = NULL;
-
 #ifdef CONFIG_SYSCTL
        {
                int i;