1/*
2 * Copyright 2003-2005	Devicescape Software, Inc.
3 * Copyright (c) 2006	Jiri Benc <jbenc@suse.cz>
4 * Copyright 2007	Johannes Berg <johannes@sipsolutions.net>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10
11#include <linux/debugfs.h>
12#include <linux/ieee80211.h>
13#include "ieee80211_i.h"
14#include "debugfs.h"
15#include "debugfs_sta.h"
16#include "sta_info.h"
17
18/* sta attributtes */
19
20#define STA_READ(name, buflen, field, format_string)			\
21static ssize_t sta_ ##name## _read(struct file *file,			\
22				   char __user *userbuf,		\
23				   size_t count, loff_t *ppos)		\
24{									\
25	int res;							\
26	struct sta_info *sta = file->private_data;			\
27	char buf[buflen];						\
28	res = scnprintf(buf, buflen, format_string, sta->field);	\
29	return simple_read_from_buffer(userbuf, count, ppos, buf, res);	\
30}
31#define STA_READ_D(name, field) STA_READ(name, 20, field, "%d\n")
32#define STA_READ_U(name, field) STA_READ(name, 20, field, "%u\n")
33#define STA_READ_LU(name, field) STA_READ(name, 20, field, "%lu\n")
34#define STA_READ_S(name, field) STA_READ(name, 20, field, "%s\n")
35
36#define STA_READ_RATE(name, field)					\
37static ssize_t sta_##name##_read(struct file *file,			\
38				 char __user *userbuf,			\
39				 size_t count, loff_t *ppos)		\
40{									\
41	struct sta_info *sta = file->private_data;			\
42	struct ieee80211_local *local = wdev_priv(sta->dev->ieee80211_ptr);\
43	struct ieee80211_hw_mode *mode = local->oper_hw_mode;		\
44	char buf[20];							\
45	int res = scnprintf(buf, sizeof(buf), "%d\n",			\
46			    (sta->field >= 0 &&				\
47			    sta->field < mode->num_rates) ?		\
48			    mode->rates[sta->field].rate : -1);		\
49	return simple_read_from_buffer(userbuf, count, ppos, buf, res);	\
50}
51
52#define STA_OPS(name)							\
53static const struct file_operations sta_ ##name## _ops = {		\
54	.read = sta_##name##_read,					\
55	.open = mac80211_open_file_generic,				\
56}
57
58#define STA_FILE(name, field, format)					\
59		STA_READ_##format(name, field)				\
60		STA_OPS(name)
61
62STA_FILE(aid, aid, D);
63STA_FILE(key_idx_compression, key_idx_compression, D);
64STA_FILE(dev, dev->name, S);
65STA_FILE(vlan_id, vlan_id, D);
66STA_FILE(rx_packets, rx_packets, LU);
67STA_FILE(tx_packets, tx_packets, LU);
68STA_FILE(rx_bytes, rx_bytes, LU);
69STA_FILE(tx_bytes, tx_bytes, LU);
70STA_FILE(rx_duplicates, num_duplicates, LU);
71STA_FILE(rx_fragments, rx_fragments, LU);
72STA_FILE(rx_dropped, rx_dropped, LU);
73STA_FILE(tx_fragments, tx_fragments, LU);
74STA_FILE(tx_filtered, tx_filtered_count, LU);
75STA_FILE(txrate, txrate, RATE);
76STA_FILE(last_txrate, last_txrate, RATE);
77STA_FILE(tx_retry_failed, tx_retry_failed, LU);
78STA_FILE(tx_retry_count, tx_retry_count, LU);
79STA_FILE(last_rssi, last_rssi, D);
80STA_FILE(last_signal, last_signal, D);
81STA_FILE(last_noise, last_noise, D);
82STA_FILE(channel_use, channel_use, D);
83STA_FILE(wep_weak_iv_count, wep_weak_iv_count, D);
84
85static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
86			      size_t count, loff_t *ppos)
87{
88	char buf[100];
89	struct sta_info *sta = file->private_data;
90	int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
91		sta->flags & WLAN_STA_AUTH ? "AUTH\n" : "",
92		sta->flags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
93		sta->flags & WLAN_STA_PS ? "PS\n" : "",
94		sta->flags & WLAN_STA_TIM ? "TIM\n" : "",
95		sta->flags & WLAN_STA_PERM ? "PERM\n" : "",
96		sta->flags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
97		sta->flags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
98		sta->flags & WLAN_STA_WME ? "WME\n" : "",
99		sta->flags & WLAN_STA_WDS ? "WDS\n" : "");
100	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
101}
102STA_OPS(flags);
103
104static ssize_t sta_num_ps_buf_frames_read(struct file *file,
105					  char __user *userbuf,
106					  size_t count, loff_t *ppos)
107{
108	char buf[20];
109	struct sta_info *sta = file->private_data;
110	int res = scnprintf(buf, sizeof(buf), "%u\n",
111			    skb_queue_len(&sta->ps_tx_buf));
112	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
113}
114STA_OPS(num_ps_buf_frames);
115
116static ssize_t sta_last_ack_rssi_read(struct file *file, char __user *userbuf,
117				      size_t count, loff_t *ppos)
118{
119	char buf[100];
120	struct sta_info *sta = file->private_data;
121	int res = scnprintf(buf, sizeof(buf), "%d %d %d\n",
122			    sta->last_ack_rssi[0],
123			    sta->last_ack_rssi[1],
124			    sta->last_ack_rssi[2]);
125	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
126}
127STA_OPS(last_ack_rssi);
128
129static ssize_t sta_last_ack_ms_read(struct file *file, char __user *userbuf,
130				    size_t count, loff_t *ppos)
131{
132	char buf[20];
133	struct sta_info *sta = file->private_data;
134	int res = scnprintf(buf, sizeof(buf), "%d\n",
135			    sta->last_ack ?
136			    jiffies_to_msecs(jiffies - sta->last_ack) : -1);
137	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
138}
139STA_OPS(last_ack_ms);
140
141static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
142				    size_t count, loff_t *ppos)
143{
144	char buf[20];
145	struct sta_info *sta = file->private_data;
146	int res = scnprintf(buf, sizeof(buf), "%d\n",
147			    jiffies_to_msecs(jiffies - sta->last_rx));
148	return simple_read_from_buffer(userbuf, count, ppos, buf, res);
149}
150STA_OPS(inactive_ms);
151
152static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
153				      size_t count, loff_t *ppos)
154{
155	char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
156	int i;
157	struct sta_info *sta = file->private_data;
158	for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
159		p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
160			       sta->last_seq_ctrl[i]);
161	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
162	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
163}
164STA_OPS(last_seq_ctrl);
165
166#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
167static ssize_t sta_wme_rx_queue_read(struct file *file, char __user *userbuf,
168				     size_t count, loff_t *ppos)
169{
170	char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
171	int i;
172	struct sta_info *sta = file->private_data;
173	for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
174		p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
175			       sta->wme_rx_queue[i]);
176	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
177	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
178}
179STA_OPS(wme_rx_queue);
180
181static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf,
182				     size_t count, loff_t *ppos)
183{
184	char buf[15*NUM_TX_DATA_QUEUES], *p = buf;
185	int i;
186	struct sta_info *sta = file->private_data;
187	for (i = 0; i < NUM_TX_DATA_QUEUES; i++)
188		p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
189			       sta->wme_tx_queue[i]);
190	p += scnprintf(p, sizeof(buf)+buf-p, "\n");
191	return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
192}
193STA_OPS(wme_tx_queue);
194#endif
195
196#define DEBUGFS_ADD(name) \
197	sta->debugfs.name = debugfs_create_file(#name, 0444, \
198		sta->debugfs.dir, sta, &sta_ ##name## _ops);
199
200#define DEBUGFS_DEL(name) \
201	debugfs_remove(sta->debugfs.name);\
202	sta->debugfs.name = NULL;
203
204
205void ieee80211_sta_debugfs_add(struct sta_info *sta)
206{
207	char buf[3*6];
208	struct dentry *stations_dir = sta->local->debugfs.stations;
209
210	if (!stations_dir)
211		return;
212
213	sprintf(buf, MAC_FMT, MAC_ARG(sta->addr));
214
215	sta->debugfs.dir = debugfs_create_dir(buf, stations_dir);
216	if (!sta->debugfs.dir)
217		return;
218
219	DEBUGFS_ADD(flags);
220	DEBUGFS_ADD(num_ps_buf_frames);
221	DEBUGFS_ADD(last_ack_rssi);
222	DEBUGFS_ADD(last_ack_ms);
223	DEBUGFS_ADD(inactive_ms);
224	DEBUGFS_ADD(last_seq_ctrl);
225#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
226	DEBUGFS_ADD(wme_rx_queue);
227	DEBUGFS_ADD(wme_tx_queue);
228#endif
229}
230
231void ieee80211_sta_debugfs_remove(struct sta_info *sta)
232{
233	DEBUGFS_DEL(flags);
234	DEBUGFS_DEL(num_ps_buf_frames);
235	DEBUGFS_DEL(last_ack_rssi);
236	DEBUGFS_DEL(last_ack_ms);
237	DEBUGFS_DEL(inactive_ms);
238	DEBUGFS_DEL(last_seq_ctrl);
239#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
240	DEBUGFS_DEL(wme_rx_queue);
241	DEBUGFS_DEL(wme_tx_queue);
242#endif
243
244	debugfs_remove(sta->debugfs.dir);
245	sta->debugfs.dir = NULL;
246}
247