From: Joe Stringer Date: Wed, 3 Oct 2018 05:32:26 +0000 (-0700) Subject: net: core: Fix build with CONFIG_IPV6=m X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=d71019b54bff;p=openwrt%2Fstaging%2Fblogic.git net: core: Fix build with CONFIG_IPV6=m Stephen Rothwell reports the following link failure with IPv6 as module: x86_64-linux-gnu-ld: net/core/filter.o: in function `sk_lookup': (.text+0x19219): undefined reference to `__udp6_lib_lookup' Fix the build by only enabling the IPv6 socket lookup if IPv6 support is compiled into the kernel. Signed-off-by: Joe Stringer Signed-off-by: Daniel Borkmann --- diff --git a/net/core/filter.c b/net/core/filter.c index 591c698bc517..30c6b2d3ef16 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -4838,7 +4838,7 @@ struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple, sk = __udp4_lib_lookup(net, src4, tuple->ipv4.sport, dst4, tuple->ipv4.dport, dif, sdif, &udp_table, skb); -#if IS_ENABLED(CONFIG_IPV6) +#if IS_REACHABLE(CONFIG_IPV6) } else { struct in6_addr *src6 = (struct in6_addr *)&tuple->ipv6.saddr; struct in6_addr *dst6 = (struct in6_addr *)&tuple->ipv6.daddr;