From: Randy Dunlap <[email protected]> Fix build errors when CONFIG_INET is not set/enabled.
(.text+0x2b1b): undefined reference to `tcp_prot' (.text+0x2b3b): undefined reference to `tcp_prot' Signed-off-by: Randy Dunlap <[email protected]> Cc: Alexei Starovoitov <[email protected]> Cc: Daniel Borkmann <[email protected]> Cc: Martin KaFai Lau <[email protected]> Cc: Song Liu <[email protected]> Cc: Yonghong Song <[email protected]> Cc: Andrii Nakryiko <[email protected]> Cc: John Fastabend <[email protected]> Cc: KP Singh <[email protected]> Cc: [email protected] Cc: [email protected] --- net/core/filter.c | 4 ++++ 1 file changed, 4 insertions(+) --- linux-next-20200630.orig/net/core/filter.c +++ linux-next-20200630/net/core/filter.c @@ -9328,8 +9328,10 @@ const struct bpf_func_proto bpf_skc_to_t BPF_CALL_1(bpf_skc_to_tcp_timewait_sock, struct sock *, sk) { +#ifdef CONFIG_INET if (sk->sk_prot == &tcp_prot && sk->sk_state == TCP_TIME_WAIT) return (unsigned long)sk; +#endif #if IS_BUILTIN(CONFIG_IPV6) if (sk->sk_prot == &tcpv6_prot && sk->sk_state == TCP_TIME_WAIT) @@ -9350,8 +9352,10 @@ const struct bpf_func_proto bpf_skc_to_t BPF_CALL_1(bpf_skc_to_tcp_request_sock, struct sock *, sk) { +#ifdef CONFIG_INET if (sk->sk_prot == &tcp_prot && sk->sk_state == TCP_NEW_SYN_RECV) return (unsigned long)sk; +#endif #if IS_BUILTIN(CONFIG_IPV6) if (sk->sk_prot == &tcpv6_prot && sk->sk_state == TCP_NEW_SYN_RECV)
