linux-kernel - [PATCH HID v2 14/16] bpf: allow bpf helpers to be used into HID-BPF struct

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Message-Id: <20240607-hid_bpf_struct_ops-v2-14-3f95f4d02292@kernel.org>
Date: Fri, 07 Jun 2024 17:28:34 +0200
From: Benjamin Tissoires <bentiss@...nel.org>
To: Shuah Khan <shuah@...nel.org>, Jiri Kosina <jikos@...nel.org>, 
 Jonathan Corbet <corbet@....net>, Alexei Starovoitov <ast@...nel.org>
Cc: linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org, 
 bpf@...r.kernel.org, linux-input@...r.kernel.org, linux-doc@...r.kernel.org, 
 Benjamin Tissoires <bentiss@...nel.org>
Subject: [PATCH HID v2 14/16] bpf: allow bpf helpers to be used into
 HID-BPF struct_ops

Without this helpers like bpf_printk() or bpf_map_update() are not
available, making anything but change of bytes impossible to do.

Signed-off-by: Benjamin Tissoires <bentiss@...nel.org>

---

new in v2
---
 drivers/hid/bpf/hid_bpf_struct_ops.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/hid/bpf/hid_bpf_struct_ops.c b/drivers/hid/bpf/hid_bpf_struct_ops.c
index 9192c66cde20..056d05d96962 100644
--- a/drivers/hid/bpf/hid_bpf_struct_ops.c
+++ b/drivers/hid/bpf/hid_bpf_struct_ops.c
@@ -89,6 +89,7 @@ static int hid_bpf_ops_btf_struct_access(struct bpf_verifier_log *log,
 }
 
 static const struct bpf_verifier_ops hid_bpf_verifier_ops = {
+	.get_func_proto = bpf_base_func_proto,
 	.is_valid_access = hid_bpf_ops_is_valid_access,
 	.btf_struct_access = hid_bpf_ops_btf_struct_access,
 };

-- 
2.44.0