[PATCH] ipv6: remove unused function ipv6_skb_idev()

[Lukas Bulwahn]

Commit bdb7cc643fc9 ("ipv6: Count interface receive statistics on the
ingress netdev") removed all callees for ipv6_skb_idev(). Hence, since
then, ipv6_skb_idev() is unused and make CC=clang W=1 warns:

  net/ipv6/exthdrs.c:909:33:
    warning: unused function 'ipv6_skb_idev' [-Wunused-function]

So, remove this unused function and a -Wunused-function warning.

Signed-off-by: Lukas Bulwahn <lukas.bulwahn@xxxxxxxxx>
---
Alexey, Hideaki-san, please ack.

David, Jakub, please pick this minor non-urgent clean-up patch.

 net/ipv6/exthdrs.c | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/net/ipv6/exthdrs.c b/net/ipv6/exthdrs.c
index 374105e4394f..584d1b06eb90 100644
--- a/net/ipv6/exthdrs.c
+++ b/net/ipv6/exthdrs.c
@@ -906,10 +906,6 @@ void ipv6_exthdrs_exit(void)
 /*
  * Note: we cannot rely on skb_dst(skb) before we assign it in ip6_route_input().
  */
-static inline struct inet6_dev *ipv6_skb_idev(struct sk_buff *skb)
-{
-	return skb_dst(skb) ? ip6_dst_idev(skb_dst(skb)) : __in6_dev_get(skb->dev);
-}
 
 static inline struct net *ipv6_skb_net(struct sk_buff *skb)
 {
-- 
2.17.1