[PATCH net-next v2 1/4] ipv6: silence compilation warning for non-IPV6 builds

[Leon Romanovsky <leon@xxxxxxxxxx>]

From: Leon Romanovsky <leonro@xxxxxxxxxx>

The W=1 compilation of allmodconfig generates the following warning:

net/ipv6/icmp.c:448:6: warning: no previous prototype for 'icmp6_send' 
[-Wmissing-prototypes]
  448 | void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
      |      ^~~~~~~~~~

Fix it by providing function declaration for builds with ipv6 as a module.

Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
 include/linux/icmpv6.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/icmpv6.h b/include/linux/icmpv6.h
index 1b3371ae8193..452d8978ffc7 100644
--- a/include/linux/icmpv6.h
+++ b/include/linux/icmpv6.h
@@ -16,9 +16,9 @@ static inline struct icmp6hdr *icmp6_hdr(const struct sk_buff 
*skb)

 typedef void ip6_icmp_send_t(struct sk_buff *skb, u8 type, u8 code, __u32 info,
                             const struct in6_addr *force_saddr);
-#if IS_BUILTIN(CONFIG_IPV6)
 void icmp6_send(struct sk_buff *skb, u8 type, u8 code, __u32 info,
                const struct in6_addr *force_saddr);
+#if IS_BUILTIN(CONFIG_IPV6)
 static inline void icmpv6_send(struct sk_buff *skb, u8 type, u8 code, __u32 
info)
 {
        icmp6_send(skb, type, code, info, NULL);
--
2.29.2