linux-kernel - [PATCH bpf-next v4 6/7] bpf: Remove attach_type in bpf_tracing

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20250710032038.888700-7-chen.dylane@linux.dev>
Date: Thu, 10 Jul 2025 11:20:37 +0800
From: Tao Chen <chen.dylane@...ux.dev>
To: daniel@...earbox.net,
	razor@...ckwall.org,
	andrew+netdev@...n.ch,
	davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	ast@...nel.org,
	andrii@...nel.org,
	martin.lau@...ux.dev,
	eddyz87@...il.com,
	song@...nel.org,
	yonghong.song@...ux.dev,
	john.fastabend@...il.com,
	kpsingh@...nel.org,
	sdf@...ichev.me,
	haoluo@...gle.com,
	jolsa@...nel.org,
	mattbobrowski@...gle.com,
	rostedt@...dmis.org,
	mhiramat@...nel.org,
	mathieu.desnoyers@...icios.com,
	horms@...nel.org,
	willemb@...gle.com,
	jakub@...udflare.com,
	pablo@...filter.org,
	kadlec@...filter.org,
	hawk@...nel.org
Cc: bpf@...r.kernel.org,
	netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-trace-kernel@...r.kernel.org,
	netfilter-devel@...r.kernel.org,
	coreteam@...filter.org,
	Tao Chen <chen.dylane@...ux.dev>
Subject: [PATCH bpf-next v4 6/7] bpf: Remove attach_type in bpf_tracing_link

Use attach_type in bpf_link, and remove it in bpf_tracing_link.

Acked-by: Jiri Olsa <jolsa@...nel.org>
Signed-off-by: Tao Chen <chen.dylane@...ux.dev>
---
 include/linux/bpf.h  | 1 -
 kernel/bpf/syscall.c | 5 ++---
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index dd5070039de..976ae571522 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -1784,7 +1784,6 @@ struct bpf_shim_tramp_link {
 
 struct bpf_tracing_link {
 	struct bpf_tramp_link link;
-	enum bpf_attach_type attach_type;
 	struct bpf_trampoline *trampoline;
 	struct bpf_prog *tgt_prog;
 };
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index 14883b3040a..bed523bf92c 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -3414,7 +3414,7 @@ static void bpf_tracing_link_show_fdinfo(const struct bpf_link *link,
 		   "target_obj_id:\t%u\n"
 		   "target_btf_id:\t%u\n"
 		   "cookie:\t%llu\n",
-		   tr_link->attach_type,
+		   link->attach_type,
 		   target_obj_id,
 		   target_btf_id,
 		   tr_link->link.cookie);
@@ -3426,7 +3426,7 @@ static int bpf_tracing_link_fill_link_info(const struct bpf_link *link,
 	struct bpf_tracing_link *tr_link =
 		container_of(link, struct bpf_tracing_link, link.link);
 
-	info->tracing.attach_type = tr_link->attach_type;
+	info->tracing.attach_type = link->attach_type;
 	info->tracing.cookie = tr_link->link.cookie;
 	bpf_trampoline_unpack_key(tr_link->trampoline->key,
 				  &info->tracing.target_obj_id,
@@ -3516,7 +3516,6 @@ static int bpf_tracing_prog_attach(struct bpf_prog *prog,
 	bpf_link_init(&link->link.link, BPF_LINK_TYPE_TRACING,
 		      &bpf_tracing_link_lops, prog, attach_type);
 
-	link->attach_type = prog->expected_attach_type;
 	link->link.cookie = bpf_cookie;
 
 	mutex_lock(&prog->aux->dst_mutex);
-- 
2.48.1