ip_tunnels: use tos and ttl fields also for IPv6

Rename the ipv4_tos and ipv4_ttl fields to just 'tos' and 'ttl', as they'll
be used with IPv6 tunnels, too.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
index b7bb7d6..5193618 100644
--- a/net/ipv4/ip_gre.c
+++ b/net/ipv4/ip_gre.c
@@ -409,8 +409,8 @@
 			info = &tun_dst->u.tun_info;
 			info->key.u.ipv4.src = iph->saddr;
 			info->key.u.ipv4.dst = iph->daddr;
-			info->key.ipv4_tos = iph->tos;
-			info->key.ipv4_ttl = iph->ttl;
+			info->key.tos = iph->tos;
+			info->key.ttl = iph->ttl;
 
 			info->mode = IP_TUNNEL_INFO_RX;
 			info->key.tun_flags = tpi->flags &
@@ -529,7 +529,7 @@
 	memset(&fl, 0, sizeof(fl));
 	fl.daddr = key->u.ipv4.dst;
 	fl.saddr = key->u.ipv4.src;
-	fl.flowi4_tos = RT_TOS(key->ipv4_tos);
+	fl.flowi4_tos = RT_TOS(key->tos);
 	fl.flowi4_mark = skb->mark;
 	fl.flowi4_proto = IPPROTO_GRE;
 
@@ -565,7 +565,7 @@
 	df = key->tun_flags & TUNNEL_DONT_FRAGMENT ?  htons(IP_DF) : 0;
 	err = iptunnel_xmit(skb->sk, rt, skb, fl.saddr,
 			    key->u.ipv4.dst, IPPROTO_GRE,
-			    key->ipv4_tos, key->ipv4_ttl, df, false);
+			    key->tos, key->ttl, df, false);
 	iptunnel_xmit_stats(err, &dev->stats, dev->tstats);
 	return;