fou: make local function static

The build header functions are not used by any other code.

net/ipv6/fou6.c:36:5: warning: no previous prototype for ‘fou6_build_header’ [-Wmissing-prototypes]
net/ipv6/fou6.c:54:5: warning: no previous prototype for ‘gue6_build_header’ [-Wmissing-prototypes]

Need to do some code rearranging to satisfy different Kconfig possiblities.

Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 6 insertions, 8 deletions

diff --git a/net/ipv6/fou6.c b/net/ipv6/fou6.c
index 9ea249b9451e..6de3c04b0f30 100644
--- a/net/ipv6/fou6.c
+++ b/net/ipv6/fou6.c
@@ -14,6 +14,8 @@
 #include <net/udp.h>
 #include <net/udp_tunnel.h>
 
+#if IS_ENABLED(CONFIG_IPV6_FOU_TUNNEL)
+
 static void fou6_build_udp(struct sk_buff *skb, struct ip_tunnel_encap *e,
                            struct flowi6 *fl6, u8 *protocol, __be16 sport)
 {
@@ -33,8 +35,8 @@ static void fou6_build_udp(struct sk_buff *skb, struct ip_tunnel_encap *e,
         *protocol = IPPROTO_UDP;
 }
 
-int fou6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
-                      u8 *protocol, struct flowi6 *fl6)
+static int fou6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
+                             u8 *protocol, struct flowi6 *fl6)
 {
         __be16 sport;
         int err;
@@ -49,10 +51,9 @@ int fou6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
 
         return 0;
 }
-EXPORT_SYMBOL(fou6_build_header);
 
-int gue6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
-                      u8 *protocol, struct flowi6 *fl6)
+static int gue6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
+                             u8 *protocol, struct flowi6 *fl6)
 {
         __be16 sport;
         int err;
@@ -67,9 +68,6 @@ int gue6_build_header(struct sk_buff *skb, struct ip_tunnel_encap *e,
 
         return 0;
 }
-EXPORT_SYMBOL(gue6_build_header);
-
-#if IS_ENABLED(CONFIG_IPV6_FOU_TUNNEL)
 
 static const struct ip6_tnl_encap_ops fou_ip6tun_ops = {
         .encap_hlen = fou_encap_hlen,