Add __bpf_kfunc before bpf_mptcp_subflow_queues_empty(), drop __diag_*,
it will be added in the next patch.

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
---
 net/mptcp/bpf.c | 8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/net/mptcp/bpf.c b/net/mptcp/bpf.c
index 3c29718156df..8109d9dfaf5e 100644
--- a/net/mptcp/bpf.c
+++ b/net/mptcp/bpf.c
@@ -163,17 +163,11 @@ static const struct btf_kfunc_id_set bpf_mptcp_fmodret_set = {
 	.set   = &bpf_mptcp_fmodret_ids,
 };
 
-__diag_push();
-__diag_ignore_all("-Wmissing-prototypes",
-		  "kfuncs which will be used in BPF programs");
-
-bool bpf_mptcp_subflow_queues_empty(struct sock *sk)
+__bpf_kfunc bool bpf_mptcp_subflow_queues_empty(struct sock *sk)
 {
 	return tcp_rtx_queue_empty(sk);
 }
 
-__diag_pop();
-
 BTF_SET8_START(bpf_mptcp_sched_kfunc_ids)
 BTF_ID_FLAGS(func, mptcp_subflow_set_scheduled)
 BTF_ID_FLAGS(func, mptcp_sched_data_set_contexts)
-- 
2.35.3