From: Geliang Tang <tanggeliang@kylinos.cn>

Drop bpf_mptcp_subflow_queues_empty declaration.

Register kfunc set again.

Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
---
 net/mptcp/bpf.c      | 11 +++++++++--
 net/mptcp/protocol.h |  1 -
 2 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/net/mptcp/bpf.c b/net/mptcp/bpf.c
index 22caff1d4dc2..6893d908d3c7 100644
--- a/net/mptcp/bpf.c
+++ b/net/mptcp/bpf.c
@@ -298,13 +298,18 @@ static const struct btf_kfunc_id_set bpf_mptcp_common_kfunc_set = {
 	.set	= &bpf_mptcp_common_kfunc_ids,
 };
 
-/*
+BTF_KFUNCS_START(bpf_mptcp_sched_kfunc_ids)
 BTF_ID_FLAGS(func, mptcp_set_timeout)
 BTF_ID_FLAGS(func, mptcp_wnd_end)
 BTF_ID_FLAGS(func, tcp_stream_memory_free)
 BTF_ID_FLAGS(func, bpf_mptcp_subflow_queues_empty)
 BTF_ID_FLAGS(func, mptcp_pm_subflow_chk_stale)
-*/
+BTF_KFUNCS_END(bpf_mptcp_sched_kfunc_ids)
+
+static const struct btf_kfunc_id_set bpf_mptcp_sched_kfunc_set = {
+	.owner	= THIS_MODULE,
+	.set	= &bpf_mptcp_sched_kfunc_ids,
+};
 
 static int __init bpf_mptcp_kfunc_init(void)
 {
@@ -313,6 +318,8 @@ static int __init bpf_mptcp_kfunc_init(void)
 	ret = register_btf_fmodret_id_set(&bpf_mptcp_fmodret_set);
 	ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_UNSPEC,
 					       &bpf_mptcp_common_kfunc_set);
+	ret = ret ?: register_btf_kfunc_id_set(BPF_PROG_TYPE_STRUCT_OPS,
+					       &bpf_mptcp_sched_kfunc_set);
 #ifdef CONFIG_BPF_JIT
 	ret = ret ?: register_bpf_struct_ops(&bpf_mptcp_sched_ops, mptcp_sched_ops);
 #endif
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index e774f28a6f8d..7848a1989d17 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -722,7 +722,6 @@ void mptcp_subflow_queue_clean(struct sock *sk, struct sock *ssk);
 void mptcp_sock_graft(struct sock *sk, struct socket *parent);
 u64 mptcp_wnd_end(const struct mptcp_sock *msk);
 void mptcp_set_timeout(struct sock *sk);
-bool bpf_mptcp_subflow_queues_empty(struct sock *sk);
 struct sock *__mptcp_nmpc_sk(struct mptcp_sock *msk);
 bool __mptcp_close(struct sock *sk, long timeout);
 void mptcp_cancel_work(struct sock *sk);
-- 
2.43.0