Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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_OPS(name) \
37static const struct file_operations sta_ ##name## _ops = { \
38 .read = sta_##name##_read, \
39 .open = mac80211_open_file_generic, \
40}
41
42#define STA_OPS_WR(name) \
43static const struct file_operations sta_ ##name## _ops = { \
44 .read = sta_##name##_read, \
45 .write = sta_##name##_write, \
46 .open = mac80211_open_file_generic, \
47}
48
49#define STA_FILE(name, field, format) \
50 STA_READ_##format(name, field) \
51 STA_OPS(name)
52
53STA_FILE(aid, aid, D);
54STA_FILE(dev, sdata->dev->name, S);
55STA_FILE(rx_packets, rx_packets, LU);
56STA_FILE(tx_packets, tx_packets, LU);
57STA_FILE(rx_bytes, rx_bytes, LU);
58STA_FILE(tx_bytes, tx_bytes, LU);
59STA_FILE(rx_duplicates, num_duplicates, LU);
60STA_FILE(rx_fragments, rx_fragments, LU);
61STA_FILE(rx_dropped, rx_dropped, LU);
62STA_FILE(tx_fragments, tx_fragments, LU);
63STA_FILE(tx_filtered, tx_filtered_count, LU);
64STA_FILE(tx_retry_failed, tx_retry_failed, LU);
65STA_FILE(tx_retry_count, tx_retry_count, LU);
66STA_FILE(last_rssi, last_rssi, D);
67STA_FILE(last_signal, last_signal, D);
68STA_FILE(last_noise, last_noise, D);
69STA_FILE(channel_use, channel_use, D);
70STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);
71
72static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
73 size_t count, loff_t *ppos)
74{
75 char buf[100];
76 struct sta_info *sta = file->private_data;
77 int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s",
78 sta->flags & WLAN_STA_AUTH ? "AUTH\n" : "",
79 sta->flags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
80 sta->flags & WLAN_STA_PS ? "PS\n" : "",
81 sta->flags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
82 sta->flags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
83 sta->flags & WLAN_STA_WME ? "WME\n" : "",
84 sta->flags & WLAN_STA_WDS ? "WDS\n" : "");
85 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
86}
87STA_OPS(flags);
88
89static ssize_t sta_num_ps_buf_frames_read(struct file *file,
90 char __user *userbuf,
91 size_t count, loff_t *ppos)
92{
93 char buf[20];
94 struct sta_info *sta = file->private_data;
95 int res = scnprintf(buf, sizeof(buf), "%u\n",
96 skb_queue_len(&sta->ps_tx_buf));
97 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
98}
99STA_OPS(num_ps_buf_frames);
100
101static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
102 size_t count, loff_t *ppos)
103{
104 char buf[20];
105 struct sta_info *sta = file->private_data;
106 int res = scnprintf(buf, sizeof(buf), "%d\n",
107 jiffies_to_msecs(jiffies - sta->last_rx));
108 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
109}
110STA_OPS(inactive_ms);
111
112static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
113 size_t count, loff_t *ppos)
114{
115 char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
116 int i;
117 struct sta_info *sta = file->private_data;
118 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
119 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
120 le16_to_cpu(sta->last_seq_ctrl[i]));
121 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
122 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
123}
124STA_OPS(last_seq_ctrl);
125
126#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
127static ssize_t sta_wme_rx_queue_read(struct file *file, char __user *userbuf,
128 size_t count, loff_t *ppos)
129{
130 char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
131 int i;
132 struct sta_info *sta = file->private_data;
133 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
134 p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
135 sta->wme_rx_queue[i]);
136 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
137 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
138}
139STA_OPS(wme_rx_queue);
140
141static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf,
142 size_t count, loff_t *ppos)
143{
144 char buf[15*NUM_TX_DATA_QUEUES], *p = buf;
145 int i;
146 struct sta_info *sta = file->private_data;
147 for (i = 0; i < NUM_TX_DATA_QUEUES; i++)
148 p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
149 sta->wme_tx_queue[i]);
150 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
151 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
152}
153STA_OPS(wme_tx_queue);
154#endif
155
156static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
157 size_t count, loff_t *ppos)
158{
159 char buf[768], *p = buf;
160 int i;
161 struct sta_info *sta = file->private_data;
162 p += scnprintf(p, sizeof(buf)+buf-p, "Agg state for STA is:\n");
163 p += scnprintf(p, sizeof(buf)+buf-p, " STA next dialog_token is %d \n "
164 "TIDs info is: \n TID :",
165 (sta->ampdu_mlme.dialog_token_allocator + 1));
166 for (i = 0; i < STA_TID_NUM; i++)
167 p += scnprintf(p, sizeof(buf)+buf-p, "%5d", i);
168
169 p += scnprintf(p, sizeof(buf)+buf-p, "\n RX :");
170 for (i = 0; i < STA_TID_NUM; i++)
171 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
172 sta->ampdu_mlme.tid_state_rx[i]);
173
174 p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
175 for (i = 0; i < STA_TID_NUM; i++)
176 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
177 sta->ampdu_mlme.tid_state_rx[i]?
178 sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
179
180 p += scnprintf(p, sizeof(buf)+buf-p, "\n TX :");
181 for (i = 0; i < STA_TID_NUM; i++)
182 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
183 sta->ampdu_mlme.tid_state_tx[i]);
184
185 p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
186 for (i = 0; i < STA_TID_NUM; i++)
187 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
188 sta->ampdu_mlme.tid_state_tx[i]?
189 sta->ampdu_mlme.tid_tx[i]->dialog_token : 0);
190
191 p += scnprintf(p, sizeof(buf)+buf-p, "\n SSN :");
192 for (i = 0; i < STA_TID_NUM; i++)
193 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
194 sta->ampdu_mlme.tid_state_tx[i]?
195 sta->ampdu_mlme.tid_tx[i]->ssn : 0);
196
197 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
198
199 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
200}
201
202static ssize_t sta_agg_status_write(struct file *file,
203 const char __user *user_buf, size_t count, loff_t *ppos)
204{
205 struct sta_info *sta = file->private_data;
206 struct net_device *dev = sta->sdata->dev;
207 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
208 struct ieee80211_hw *hw = &local->hw;
209 u8 *da = sta->addr;
210 static int tid_static_tx[16] = {0, 0, 0, 0, 0, 0, 0, 0,
211 0, 0, 0, 0, 0, 0, 0, 0};
212 static int tid_static_rx[16] = {1, 1, 1, 1, 1, 1, 1, 1,
213 1, 1, 1, 1, 1, 1, 1, 1};
214 char *endp;
215 char buf[32];
216 int buf_size, rs;
217 unsigned int tid_num;
218 char state[4];
219
220 memset(buf, 0x00, sizeof(buf));
221 buf_size = min(count, (sizeof(buf)-1));
222 if (copy_from_user(buf, user_buf, buf_size))
223 return -EFAULT;
224
225 tid_num = simple_strtoul(buf, &endp, 0);
226 if (endp == buf)
227 return -EINVAL;
228
229 if ((tid_num >= 100) && (tid_num <= 115)) {
230 /* toggle Rx aggregation command */
231 tid_num = tid_num - 100;
232 if (tid_static_rx[tid_num] == 1) {
233 strcpy(state, "off ");
234 ieee80211_sta_stop_rx_ba_session(dev, da, tid_num, 0,
235 WLAN_REASON_QSTA_REQUIRE_SETUP);
236 sta->ampdu_mlme.tid_state_rx[tid_num] |=
237 HT_AGG_STATE_DEBUGFS_CTL;
238 tid_static_rx[tid_num] = 0;
239 } else {
240 strcpy(state, "on ");
241 sta->ampdu_mlme.tid_state_rx[tid_num] &=
242 ~HT_AGG_STATE_DEBUGFS_CTL;
243 tid_static_rx[tid_num] = 1;
244 }
245 printk(KERN_DEBUG "debugfs - try switching tid %u %s\n",
246 tid_num, state);
247 } else if ((tid_num >= 0) && (tid_num <= 15)) {
248 /* toggle Tx aggregation command */
249 if (tid_static_tx[tid_num] == 0) {
250 strcpy(state, "on ");
251 rs = ieee80211_start_tx_ba_session(hw, da, tid_num);
252 if (rs == 0)
253 tid_static_tx[tid_num] = 1;
254 } else {
255 strcpy(state, "off");
256 rs = ieee80211_stop_tx_ba_session(hw, da, tid_num, 1);
257 if (rs == 0)
258 tid_static_tx[tid_num] = 0;
259 }
260 printk(KERN_DEBUG "debugfs - switching tid %u %s, return=%d\n",
261 tid_num, state, rs);
262 }
263
264 return count;
265}
266STA_OPS_WR(agg_status);
267
268#define DEBUGFS_ADD(name) \
269 sta->debugfs.name = debugfs_create_file(#name, 0400, \
270 sta->debugfs.dir, sta, &sta_ ##name## _ops);
271
272#define DEBUGFS_DEL(name) \
273 debugfs_remove(sta->debugfs.name);\
274 sta->debugfs.name = NULL;
275
276
277void ieee80211_sta_debugfs_add(struct sta_info *sta)
278{
279 struct dentry *stations_dir = sta->local->debugfs.stations;
280 DECLARE_MAC_BUF(mbuf);
281 u8 *mac;
282
283 if (!stations_dir)
284 return;
285
286 mac = print_mac(mbuf, sta->addr);
287
288 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
289 if (!sta->debugfs.dir)
290 return;
291
292 DEBUGFS_ADD(flags);
293 DEBUGFS_ADD(num_ps_buf_frames);
294 DEBUGFS_ADD(inactive_ms);
295 DEBUGFS_ADD(last_seq_ctrl);
296#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
297 DEBUGFS_ADD(wme_rx_queue);
298 DEBUGFS_ADD(wme_tx_queue);
299#endif
300 DEBUGFS_ADD(agg_status);
301}
302
303void ieee80211_sta_debugfs_remove(struct sta_info *sta)
304{
305 DEBUGFS_DEL(flags);
306 DEBUGFS_DEL(num_ps_buf_frames);
307 DEBUGFS_DEL(inactive_ms);
308 DEBUGFS_DEL(last_seq_ctrl);
309#ifdef CONFIG_MAC80211_DEBUG_COUNTERS
310 DEBUGFS_DEL(wme_rx_queue);
311 DEBUGFS_DEL(wme_tx_queue);
312#endif
313 DEBUGFS_DEL(agg_status);
314
315 debugfs_remove(sta->debugfs.dir);
316 sta->debugfs.dir = NULL;
317}