net: unify the pcpu_tstats and br_cpu_netstats as one

They are same, so unify them as one, pcpu_sw_netstats.

Define pcpu_sw_netstat in netdevice.h, remove pcpu_tstats
from if_tunnel and remove br_cpu_netstats from br_private.h

Cc: Cong Wang <xiyou.wangcong@gmail.com>
Cc: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index ed94ba6..da1d9e4 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -24,7 +24,6 @@
 #include <linux/if.h>
 #include <linux/in.h>
 #include <linux/ip.h>
-#include <linux/if_tunnel.h>
 #include <linux/net.h>
 #include <linux/in6.h>
 #include <linux/netdevice.h>
@@ -77,11 +76,12 @@
 
 static struct net_device_stats *vti6_get_stats(struct net_device *dev)
 {
-	struct pcpu_tstats sum = { 0 };
+	struct pcpu_sw_netstats sum = { 0 };
 	int i;
 
 	for_each_possible_cpu(i) {
-		const struct pcpu_tstats *tstats = per_cpu_ptr(dev->tstats, i);
+		const struct pcpu_sw_netstats *tstats =
+						   per_cpu_ptr(dev->tstats, i);
 
 		sum.rx_packets += tstats->rx_packets;
 		sum.rx_bytes   += tstats->rx_bytes;
@@ -312,7 +312,7 @@
 
 	if ((t = vti6_tnl_lookup(dev_net(skb->dev), &ipv6h->saddr,
 				 &ipv6h->daddr)) != NULL) {
-		struct pcpu_tstats *tstats;
+		struct pcpu_sw_netstats *tstats;
 
 		if (t->parms.proto != IPPROTO_IPV6 && t->parms.proto != 0) {
 			rcu_read_unlock();
@@ -753,7 +753,7 @@
 
 	t->dev = dev;
 	t->net = dev_net(dev);
-	dev->tstats = alloc_percpu(struct pcpu_tstats);
+	dev->tstats = alloc_percpu(struct pcpu_sw_netstats);
 	if (!dev->tstats)
 		return -ENOMEM;
 	return 0;