linux/samples/hid/hid_bpf_helpers.h
Benjamin Tissoires a56a256933 samples/hid: add Surface Dial example
Add a more complete HID-BPF example.

Signed-off-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2022-11-15 16:28:40 +01:00

22 lines
777 B
C

/* SPDX-License-Identifier: GPL-2.0-only */
/* Copyright (c) 2022 Benjamin Tissoires
*/
#ifndef __HID_BPF_HELPERS_H
#define __HID_BPF_HELPERS_H
/* following are kfuncs exported by HID for HID-BPF */
extern __u8 *hid_bpf_get_data(struct hid_bpf_ctx *ctx,
unsigned int offset,
const size_t __sz) __ksym;
extern int hid_bpf_attach_prog(unsigned int hid_id, int prog_fd, u32 flags) __ksym;
extern struct hid_bpf_ctx *hid_bpf_allocate_context(unsigned int hid_id) __ksym;
extern void hid_bpf_release_context(struct hid_bpf_ctx *ctx) __ksym;
extern int hid_bpf_hw_request(struct hid_bpf_ctx *ctx,
__u8 *data,
size_t buf__sz,
enum hid_report_type type,
enum hid_class_request reqtype) __ksym;
#endif /* __HID_BPF_HELPERS_H */