On Thu, Feb 24, 2022 at 12:41 PM Greg KH greg@kroah.com wrote:
On Thu, Feb 24, 2022 at 12:08:23PM +0100, Benjamin Tissoires wrote:
index 000000000000..243ac45a253f --- /dev/null +++ b/include/uapi/linux/bpf_hid.h @@ -0,0 +1,39 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later WITH Linux-syscall-note */
+/*
- HID BPF public headers
- Copyright (c) 2021 Benjamin Tissoires
- */
+#ifndef _UAPI__LINUX_BPF_HID_H__ +#define _UAPI__LINUX_BPF_HID_H__
+#include <linux/types.h>
+#define HID_BPF_MAX_BUFFER_SIZE 16384 /* 16kb */
+struct hid_device;
+enum hid_bpf_event {
HID_BPF_UNDEF = 0,HID_BPF_DEVICE_EVENT,+};
+/* type is HID_BPF_DEVICE_EVENT */ +struct hid_bpf_ctx_device_event {
__u8 data[HID_BPF_MAX_BUFFER_SIZE];unsigned long size;That's not a valid type to cross the user/kernel boundry, shouldn't it be "__u64"? But really, isn't __u32 enough here?
thanks. Even __u16 should be enough, given that the upper bound is 16384. I'll amend it in v2.
Cheers, Benjamin
thanks,
greg k-h