Merge branch 'upstream-jeff' of git://git.kernel.org/pub/scm/linux/kernel/git/romieu...
[linux-2.6] / net / mac80211 / debugfs_sta.c
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)                    \
21 static 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)                                                   \
37 static 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)                                                \
43 static 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
53 STA_FILE(aid, aid, D);
54 STA_FILE(dev, sdata->dev->name, S);
55 STA_FILE(rx_packets, rx_packets, LU);
56 STA_FILE(tx_packets, tx_packets, LU);
57 STA_FILE(rx_bytes, rx_bytes, LU);
58 STA_FILE(tx_bytes, tx_bytes, LU);
59 STA_FILE(rx_duplicates, num_duplicates, LU);
60 STA_FILE(rx_fragments, rx_fragments, LU);
61 STA_FILE(rx_dropped, rx_dropped, LU);
62 STA_FILE(tx_fragments, tx_fragments, LU);
63 STA_FILE(tx_filtered, tx_filtered_count, LU);
64 STA_FILE(tx_retry_failed, tx_retry_failed, LU);
65 STA_FILE(tx_retry_count, tx_retry_count, LU);
66 STA_FILE(last_rssi, last_rssi, D);
67 STA_FILE(last_signal, last_signal, D);
68 STA_FILE(last_noise, last_noise, D);
69 STA_FILE(channel_use, channel_use, D);
70 STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);
71
72 static 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 }
87 STA_OPS(flags);
88
89 static 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 }
99 STA_OPS(num_ps_buf_frames);
100
101 static 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 }
110 STA_OPS(inactive_ms);
111
112 static 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 }
124 STA_OPS(last_seq_ctrl);
125
126 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
127 static 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 }
139 STA_OPS(wme_rx_queue);
140
141 static 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 }
153 STA_OPS(wme_tx_queue);
154 #endif
155
156 static 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
202 static 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 }
266 STA_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
277 void 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
303 void 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 }