[IPV6] make several functions static in ip6_tunnel that should be.

net/ipv6/ip6_tunnel.c

@@ -123,7 +123,7 @@ static inline void ip6_tnl_dst_store(struct ip6_tnl *t, struct dst_entry *dst)
  *   else %NULL
  **/
 
-struct ip6_tnl *
+static struct ip6_tnl *
 ip6ip6_tnl_lookup(struct in6_addr *remote, struct in6_addr *local)
 {
 	unsigned h0 = HASH(remote);
@@ -387,8 +387,9 @@ parse_tlv_tnl_enc_lim(struct sk_buff *skb, __u8 * raw)
  *   to the specifications in RFC 2473.
  **/
 
-void ip6ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
-		   int type, int code, int offset, __u32 info)
+static void 
+ip6ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
+	   int type, int code, int offset, __u32 info)
 {
 	struct ipv6hdr *ipv6h = (struct ipv6hdr *) skb->data;
 	struct ip6_tnl *t;
@@ -496,7 +497,8 @@ void ip6ip6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
  * Return: 0
  **/
 
-int ip6ip6_rcv(struct sk_buff **pskb, unsigned int *nhoffp)
+static int 
+ip6ip6_rcv(struct sk_buff **pskb, unsigned int *nhoffp)
 {
 	struct sk_buff *skb = *pskb;
 	struct ipv6hdr *ipv6h;
@@ -598,7 +600,8 @@ ip6ip6_tnl_addr_conflict(struct ip6_tnl *t, struct ipv6hdr *hdr)
  *   0
  **/
 
-int ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
+static int 
+ip6ip6_tnl_xmit(struct sk_buff *skb, struct net_device *dev)
 {
 	struct ip6_tnl *t = (struct ip6_tnl *) dev->priv;
 	struct net_device_stats *stats = &t->stat;
@@ -1079,7 +1082,8 @@ ip6ip6_tnl_dev_init(struct net_device *dev)
  * Return: 0
  **/
 
-int ip6ip6_fb_tnl_dev_init(struct net_device *dev)
+static int 
+ip6ip6_fb_tnl_dev_init(struct net_device *dev)
 {
 	struct ip6_tnl *t = dev->priv;
 	ip6ip6_tnl_dev_init_gen(dev);