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drbd: Renamed overwrite_peer to primary_force
[linux-2.6/next.git] / net / mac80211 / debugfs_sta.c
blobd92800bb2d2f4c0ec2cfe3333548e992aee1fb8c
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_FILE(name, field, format) \
43 STA_READ_##format(name, field) \
44 STA_OPS(name)
45
46 STA_FILE(aid, sta.aid, D);
47 STA_FILE(dev, sdata->name, S);
48 STA_FILE(rx_packets, rx_packets, LU);
49 STA_FILE(tx_packets, tx_packets, LU);
50 STA_FILE(rx_bytes, rx_bytes, LU);
51 STA_FILE(tx_bytes, tx_bytes, LU);
52 STA_FILE(rx_duplicates, num_duplicates, LU);
53 STA_FILE(rx_fragments, rx_fragments, LU);
54 STA_FILE(rx_dropped, rx_dropped, LU);
55 STA_FILE(tx_fragments, tx_fragments, LU);
56 STA_FILE(tx_filtered, tx_filtered_count, LU);
57 STA_FILE(tx_retry_failed, tx_retry_failed, LU);
58 STA_FILE(tx_retry_count, tx_retry_count, LU);
59 STA_FILE(last_signal, last_signal, D);
60 STA_FILE(last_noise, last_noise, D);
61 STA_FILE(wep_weak_iv_count, wep_weak_iv_count, LU);
62
63 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
64 size_t count, loff_t *ppos)
65 {
66 char buf[100];
67 struct sta_info *sta = file->private_data;
68 u32 staflags = get_sta_flags(sta);
69 int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
70 staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
71 staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
72 staflags & WLAN_STA_PS_STA ? "PS (sta)\n" : "",
73 staflags & WLAN_STA_PS_DRIVER ? "PS (driver)\n" : "",
74 staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
75 staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
76 staflags & WLAN_STA_WME ? "WME\n" : "",
77 staflags & WLAN_STA_WDS ? "WDS\n" : "",
78 staflags & WLAN_STA_MFP ? "MFP\n" : "");
79 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
80 }
81 STA_OPS(flags);
82
83 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
84 char __user *userbuf,
85 size_t count, loff_t *ppos)
86 {
87 char buf[20];
88 struct sta_info *sta = file->private_data;
89 int res = scnprintf(buf, sizeof(buf), "%u\n",
90 skb_queue_len(&sta->ps_tx_buf));
91 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
92 }
93 STA_OPS(num_ps_buf_frames);
94
95 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
96 size_t count, loff_t *ppos)
97 {
98 char buf[20];
99 struct sta_info *sta = file->private_data;
100 int res = scnprintf(buf, sizeof(buf), "%d\n",
101 jiffies_to_msecs(jiffies - sta->last_rx));
102 return simple_read_from_buffer(userbuf, count, ppos, buf, res);
103 }
104 STA_OPS(inactive_ms);
105
106 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
107 size_t count, loff_t *ppos)
108 {
109 char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
110 int i;
111 struct sta_info *sta = file->private_data;
112 for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
113 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
114 le16_to_cpu(sta->last_seq_ctrl[i]));
115 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
116 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
117 }
118 STA_OPS(last_seq_ctrl);
119
120 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
121 size_t count, loff_t *ppos)
122 {
123 char buf[64 + STA_TID_NUM * 40], *p = buf;
124 int i;
125 struct sta_info *sta = file->private_data;
126
127 spin_lock_bh(&sta->lock);
128 p += scnprintf(p, sizeof(buf) + buf - p, "next dialog_token: %#02x\n",
129 sta->ampdu_mlme.dialog_token_allocator + 1);
130 p += scnprintf(p, sizeof(buf) + buf - p,
131 "TID\t\tRX\tDTKN\tSSN\t\tTX\tDTKN\tSSN\tpending\n");
132 for (i = 0; i < STA_TID_NUM; i++) {
133 p += scnprintf(p, sizeof(buf) + buf - p, "%02d", i);
134 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
135 sta->ampdu_mlme.tid_state_rx[i]);
136 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
137 sta->ampdu_mlme.tid_state_rx[i] ?
138 sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
139 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
140 sta->ampdu_mlme.tid_state_rx[i] ?
141 sta->ampdu_mlme.tid_rx[i]->ssn : 0);
142
143 p += scnprintf(p, sizeof(buf) + buf - p, "\t\t%x",
144 sta->ampdu_mlme.tid_state_tx[i]);
145 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.2x",
146 sta->ampdu_mlme.tid_state_tx[i] ?
147 sta->ampdu_mlme.tid_tx[i]->dialog_token : 0);
148 p += scnprintf(p, sizeof(buf) + buf - p, "\t%#.3x",
149 sta->ampdu_mlme.tid_state_tx[i] ?
150 sta->ampdu_mlme.tid_tx[i]->ssn : 0);
151 p += scnprintf(p, sizeof(buf) + buf - p, "\t%03d",
152 sta->ampdu_mlme.tid_state_tx[i] ?
153 skb_queue_len(&sta->ampdu_mlme.tid_tx[i]->pending) : 0);
154 p += scnprintf(p, sizeof(buf) + buf - p, "\n");
155 }
156 spin_unlock_bh(&sta->lock);
157
158 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
159 }
160 STA_OPS(agg_status);
161
162 static ssize_t sta_ht_capa_read(struct file *file, char __user *userbuf,
163 size_t count, loff_t *ppos)
164 {
165 #define PRINT_HT_CAP(_cond, _str) \
166 do { \
167 if (_cond) \
168 p += scnprintf(p, sizeof(buf)+buf-p, "\t" _str "\n"); \
169 } while (0)
170 char buf[512], *p = buf;
171 int i;
172 struct sta_info *sta = file->private_data;
173 struct ieee80211_sta_ht_cap *htc = &sta->sta.ht_cap;
174
175 p += scnprintf(p, sizeof(buf) + buf - p, "ht %ssupported\n",
176 htc->ht_supported ? "" : "not ");
177 if (htc->ht_supported) {
178 p += scnprintf(p, sizeof(buf)+buf-p, "cap: %#.4x\n", htc->cap);
179
180 PRINT_HT_CAP((htc->cap & BIT(0)), "RX LDCP");
181 PRINT_HT_CAP((htc->cap & BIT(1)), "HT20/HT40");
182 PRINT_HT_CAP(!(htc->cap & BIT(1)), "HT20");
183
184 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 0, "Static SM Power Save");
185 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 1, "Dynamic SM Power Save");
186 PRINT_HT_CAP(((htc->cap >> 2) & 0x3) == 3, "SM Power Save disabled");
187
188 PRINT_HT_CAP((htc->cap & BIT(4)), "RX Greenfield");
189 PRINT_HT_CAP((htc->cap & BIT(5)), "RX HT20 SGI");
190 PRINT_HT_CAP((htc->cap & BIT(6)), "RX HT40 SGI");
191 PRINT_HT_CAP((htc->cap & BIT(7)), "TX STBC");
192
193 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 0, "No RX STBC");
194 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 1, "RX STBC 1-stream");
195 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 2, "RX STBC 2-streams");
196 PRINT_HT_CAP(((htc->cap >> 8) & 0x3) == 3, "RX STBC 3-streams");
197
198 PRINT_HT_CAP((htc->cap & BIT(10)), "HT Delayed Block Ack");
199
200 PRINT_HT_CAP((htc->cap & BIT(11)), "Max AMSDU length: "
201 "3839 bytes");
202 PRINT_HT_CAP(!(htc->cap & BIT(11)), "Max AMSDU length: "
203 "7935 bytes");
204
205 /*
206 * For beacons and probe response this would mean the BSS
207 * does or does not allow the usage of DSSS/CCK HT40.
208 * Otherwise it means the STA does or does not use
209 * DSSS/CCK HT40.
210 */
211 PRINT_HT_CAP((htc->cap & BIT(12)), "DSSS/CCK HT40");
212 PRINT_HT_CAP(!(htc->cap & BIT(12)), "No DSSS/CCK HT40");
213
214 /* BIT(13) is reserved */
215
216 PRINT_HT_CAP((htc->cap & BIT(14)), "40 MHz Intolerant");
217
218 PRINT_HT_CAP((htc->cap & BIT(15)), "L-SIG TXOP protection");
219
220 p += scnprintf(p, sizeof(buf)+buf-p, "ampdu factor/density: %d/%d\n",
221 htc->ampdu_factor, htc->ampdu_density);
222 p += scnprintf(p, sizeof(buf)+buf-p, "MCS mask:");
223
224 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++)
225 p += scnprintf(p, sizeof(buf)+buf-p, " %.2x",
226 htc->mcs.rx_mask[i]);
227 p += scnprintf(p, sizeof(buf)+buf-p, "\n");
228
229 /* If not set this is meaningless */
230 if (le16_to_cpu(htc->mcs.rx_highest)) {
231 p += scnprintf(p, sizeof(buf)+buf-p,
232 "MCS rx highest: %d Mbps\n",
233 le16_to_cpu(htc->mcs.rx_highest));
234 }
235
236 p += scnprintf(p, sizeof(buf)+buf-p, "MCS tx params: %x\n",
237 htc->mcs.tx_params);
238 }
239
240 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
241 }
242 STA_OPS(ht_capa);
243
244 #define DEBUGFS_ADD(name) \
245 debugfs_create_file(#name, 0400, \
246 sta->debugfs.dir, sta, &sta_ ##name## _ops);
247
248
249 void ieee80211_sta_debugfs_add(struct sta_info *sta)
250 {
251 struct dentry *stations_dir = sta->local->debugfs.stations;
252 u8 mac[3*ETH_ALEN];
253
254 sta->debugfs.add_has_run = true;
255
256 if (!stations_dir)
257 return;
258
259 snprintf(mac, sizeof(mac), "%pM", sta->sta.addr);
260
261 /*
262 * This might fail due to a race condition:
263 * When mac80211 unlinks a station, the debugfs entries
264 * remain, but it is already possible to link a new
265 * station with the same address which triggers adding
266 * it to debugfs; therefore, if the old station isn't
267 * destroyed quickly enough the old station's debugfs
268 * dir might still be around.
269 */
270 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
271 if (!sta->debugfs.dir)
272 return;
273
274 DEBUGFS_ADD(flags);
275 DEBUGFS_ADD(num_ps_buf_frames);
276 DEBUGFS_ADD(inactive_ms);
277 DEBUGFS_ADD(last_seq_ctrl);
278 DEBUGFS_ADD(agg_status);
279 DEBUGFS_ADD(dev);
280 DEBUGFS_ADD(rx_packets);
281 DEBUGFS_ADD(tx_packets);
282 DEBUGFS_ADD(rx_bytes);
283 DEBUGFS_ADD(tx_bytes);
284 DEBUGFS_ADD(rx_duplicates);
285 DEBUGFS_ADD(rx_fragments);
286 DEBUGFS_ADD(rx_dropped);
287 DEBUGFS_ADD(tx_fragments);
288 DEBUGFS_ADD(tx_filtered);
289 DEBUGFS_ADD(tx_retry_failed);
290 DEBUGFS_ADD(tx_retry_count);
291 DEBUGFS_ADD(last_signal);
292 DEBUGFS_ADD(last_noise);
293 DEBUGFS_ADD(wep_weak_iv_count);
294 DEBUGFS_ADD(ht_capa);
295 }
296
297 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
298 {
299 debugfs_remove_recursive(sta->debugfs.dir);
300 sta->debugfs.dir = NULL;
301 }
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