The only user of this variable is inside of an #ifdef, causing a warning without CONFIG_INET:
net/core/filter.c: In function '____bpf_sock_ops_cb_flags_set': net/core/filter.c:3382:6: error: unused variable 'val' [-Werror=unused-variable] int val = argval & BPF_SOCK_OPS_ALL_CB_FLAGS; This adds the same #ifdef around the declaration. Fixes: b13d88072172 ("bpf: Adds field bpf_sock_ops_cb_flags to tcp_sock") Signed-off-by: Arnd Bergmann <a...@arndb.de> --- net/core/filter.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/net/core/filter.c b/net/core/filter.c index 08ab4c65a998..c3dc6d60b4bb 100644 --- a/net/core/filter.c +++ b/net/core/filter.c @@ -3379,7 +3379,9 @@ BPF_CALL_2(bpf_sock_ops_cb_flags_set, struct bpf_sock_ops_kern *, bpf_sock, int, argval) { struct sock *sk = bpf_sock->sk; +#ifdef CONFIG_INET int val = argval & BPF_SOCK_OPS_ALL_CB_FLAGS; +#endif if (!sk_fullsock(sk)) return -EINVAL; -- 2.9.0