[NET]: Rework dev_base via list_head (v3)

Cleanup of dev_base list use, with the aim to simplify making device
list per-namespace. In almost every occasion, use of dev_base variable
and dev->next pointer could be easily replaced by for_each_netdev
loop. A few most complicated places were converted to using
first_netdev()/next_netdev().

Signed-off-by: Pavel Emelianov <xemul@openvz.org>
Acked-by: Kirill Korotaev <dev@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 2 deletions

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index cec111109155..8c971a2efe2a 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -539,13 +539,16 @@ static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
         int s_idx = cb->args[0];
         struct net_device *dev;
 
-        for (dev=dev_base, idx=0; dev; dev = dev->next, idx++) {
+        idx = 0;
+        for_each_netdev(dev) {
                 if (idx < s_idx)
-                        continue;
+                        goto cont;
                 if (rtnl_fill_ifinfo(skb, dev, NULL, 0, RTM_NEWLINK,
                                      NETLINK_CB(cb->skb).pid,
                                      cb->nlh->nlmsg_seq, 0, NLM_F_MULTI) <= 0)
                         break;
+cont:
+                idx++;
         }
         cb->args[0] = idx;