[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>

2 files changed, 3 insertions, 2 deletions

diff --git a/arch/s390/appldata/appldata_net_sum.c b/arch/s390/appldata/appldata_net_sum.c
index a43f3488fecf..2180ac105b05 100644
--- a/arch/s390/appldata/appldata_net_sum.c
+++ b/arch/s390/appldata/appldata_net_sum.c
@@ -107,7 +107,7 @@ static void appldata_get_net_sum_data(void *data)
         tx_dropped = 0;
         collisions = 0;
         read_lock(&dev_base_lock);
-        for (dev = dev_base; dev != NULL; dev = dev->next) {
+        for_each_netdev(dev) {
                 stats = dev->get_stats(dev);
                 rx_packets += stats->rx_packets;
                 tx_packets += stats->tx_packets;
diff --git a/arch/sparc64/solaris/ioctl.c b/arch/sparc64/solaris/ioctl.c
index 330743c5b3d8..18352a498628 100644
--- a/arch/sparc64/solaris/ioctl.c
+++ b/arch/sparc64/solaris/ioctl.c
@@ -686,7 +686,8 @@ static inline int solaris_i(unsigned int fd, unsigned int cmd, u32 arg)
                         int i = 0;
                         
                         read_lock_bh(&dev_base_lock);
-                        for (d = dev_base; d; d = d->next) i++;
+                        for_each_netdev(d)
+                                i++;
                         read_unlock_bh(&dev_base_lock);
 
                         if (put_user (i, (int __user *)A(arg)))