1 /*
2 * Copyright (c) 2011-2020 The Linux Foundation. All rights reserved.
3 * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
4 *
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
8 *
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 */
17
18 /**
19 * DOC: wlan_hdd_sysfs_dp_trace.h
20 *
21 * Implementation for creating sysfs files:
22 *
23 * dp_trace
24 * dump_dp_trace
25 * clear_dp_trace
26 */
27
28 #ifndef _WLAN_HDD_SYSFS_DP_TRACE_H
29 #define _WLAN_HDD_SYSFS_DP_TRACE_H
30
31 #if defined(WLAN_SYSFS) && defined(WLAN_SYSFS_DP_TRACE)
32
33 #define HDD_SYSFS_DISABLE_DP_TRACE_LIVE_MODE 0
34 #define HDD_SYSFS_ENABLE_DP_TRACE_LIVE_MODE 1
35 #define HDD_SYSFS_DUMP_DP_TRACE 2
36
37 /**
38 * hdd_sysfs_dp_trace_create() - API to create dp trace related files
39 * @driver_kobject: sysfs driver kobject
40 *
41 * file path: /sys/kernel/wifi/dp_trace
42 * /sys/kernel/wifi/dump_dp_trace
43 * /sys/kernel/wifi/clear_dp_trace
44 *
45 * usage:
46 * echo [arg_0] [arg_1] [arg_2]> dp_trace
47 * echo [0/1] > dump_dp_trace
48 * echo 2 [count] > dump_dp_trace
49 * cat dump_dp_trace
50 * echo 1 > clear_dp_trace
51 *
52 * Return: 0 on success and errno on failure
53 */
54 int hdd_sysfs_dp_trace_create(struct kobject *driver_kobject);
55
56 /**
57 * hdd_sysfs_dp_trace_destroy() - API to destroy dp trace related files
58 * @driver_kobject: sysfs driver kobject
59 *
60 * Return: none
61 */
62 void
63 hdd_sysfs_dp_trace_destroy(struct kobject *driver_kobject);
64 #else
65 static inline int
hdd_sysfs_dp_trace_create(struct kobject * driver_kobject)66 hdd_sysfs_dp_trace_create(struct kobject *driver_kobject)
67 {
68 return 0;
69 }
70
71 static inline void
hdd_sysfs_dp_trace_destroy(struct kobject * driver_kobject)72 hdd_sysfs_dp_trace_destroy(struct kobject *driver_kobject)
73 {
74 }
75 #endif
76 #endif /* #ifndef _WLAN_HDD_SYSFS_DP_TRACE_H */
77