From 815afe1785da727ee48cd8e63ac4a3ec6c7459b3 Mon Sep 17 00:00:00 2001 From: Eric Dumazet Date: Sat, 18 Oct 2014 08:34:37 -0700 Subject: tcp: fix build error if IPv6 is not enabled $ make M=net/ipv4 CC net/ipv4/route.o In file included from net/ipv4/route.c:102:0: include/net/tcp.h: In function ‘tcp_v6_iif’: include/net/tcp.h:738:32: error: ‘union ’ has no member named ‘h6’ return TCP_SKB_CB(skb)->header.h6.iif; Signed-off-by: Eric Dumazet Fixes: 870c3151382c ("ipv6: introduce tcp_v6_iif()") Signed-off-by: David S. Miller --- include/net/tcp.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/net/tcp.h b/include/net/tcp.h index c9766f89deba..4062b4f0d121 100644 --- a/include/net/tcp.h +++ b/include/net/tcp.h @@ -730,6 +730,7 @@ struct tcp_skb_cb { #define TCP_SKB_CB(__skb) ((struct tcp_skb_cb *)&((__skb)->cb[0])) +#if IS_ENABLED(CONFIG_IPV6) /* This is the variant of inet6_iif() that must be used by TCP, * as TCP moves IP6CB into a different location in skb->cb[] */ @@ -737,6 +738,7 @@ static inline int tcp_v6_iif(const struct sk_buff *skb) { return TCP_SKB_CB(skb)->header.h6.iif; } +#endif /* Due to TSO, an SKB can be composed of multiple actual * packets. To keep these tracked properly, we use this. -- cgit v1.2.3