linux-kernel - [PATCH bpf-next v8 4/5] libbpf: Init kprobe prog expected_attach

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Message-Id: <20250224165912.599068-5-chen.dylane@linux.dev>
Date: Tue, 25 Feb 2025 00:59:11 +0800
From: Tao Chen <chen.dylane@...ux.dev>
To: ast@...nel.org,
	daniel@...earbox.net,
	andrii@...nel.org,
	eddyz87@...il.com,
	haoluo@...gle.com,
	jolsa@...nel.org,
	qmo@...nel.org
Cc: bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	chen.dylane@...il.com,
	Tao Chen <chen.dylane@...ux.dev>
Subject: [PATCH bpf-next v8 4/5] libbpf: Init kprobe prog expected_attach_type for kfunc probe

Kprobe prog type kfuncs like bpf_session_is_return and
bpf_session_cookie will check the expected_attach_type,
so init the expected_attach_type here.

Signed-off-by: Tao Chen <chen.dylane@...ux.dev>
---
 tools/lib/bpf/libbpf_probes.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/lib/bpf/libbpf_probes.c b/tools/lib/bpf/libbpf_probes.c
index 8efebc18a215..bb5b457ddc80 100644
--- a/tools/lib/bpf/libbpf_probes.c
+++ b/tools/lib/bpf/libbpf_probes.c
@@ -126,6 +126,7 @@ static int probe_prog_load(enum bpf_prog_type prog_type,
 		break;
 	case BPF_PROG_TYPE_KPROBE:
 		opts.kern_version = get_kernel_version();
+		opts.expected_attach_type = BPF_TRACE_KPROBE_SESSION;
 		break;
 	case BPF_PROG_TYPE_LIRC_MODE2:
 		opts.expected_attach_type = BPF_LIRC_MODE2;
-- 
2.43.0