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_READ_RATE(name, field)                                      \
  37 static 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)                                                   \
  53 static const struct file_operations sta_ ##name## _ops = {              \
  54         .read = sta_##name##_read,                                      \
  55         .open = mac80211_open_file_generic,                             \
  56 }
  57
  58 #define STA_OPS_WR(name)                                                \
  59 static const struct file_operations sta_ ##name## _ops = {              \
  60         .read = sta_##name##_read,                                      \
  61         .write = sta_##name##_write,                                    \
  62         .open = mac80211_open_file_generic,                             \
  63 }
  64
  65 #define STA_FILE(name, field, format)                                   \
  66                 STA_READ_##format(name, field)                          \
  67                 STA_OPS(name)
  68
  69 STA_FILE(aid, aid, D);
  70 STA_FILE(dev, dev->name, S);
  71 STA_FILE(rx_packets, rx_packets, LU);
  72 STA_FILE(tx_packets, tx_packets, LU);
  73 STA_FILE(rx_bytes, rx_bytes, LU);
  74 STA_FILE(tx_bytes, tx_bytes, LU);
  75 STA_FILE(rx_duplicates, num_duplicates, LU);
  76 STA_FILE(rx_fragments, rx_fragments, LU);
  77 STA_FILE(rx_dropped, rx_dropped, LU);
  78 STA_FILE(tx_fragments, tx_fragments, LU);
  79 STA_FILE(tx_filtered, tx_filtered_count, LU);
  80 STA_FILE(txrate, txrate, RATE);
  81 STA_FILE(last_txrate, last_txrate, RATE);
  82 STA_FILE(tx_retry_failed, tx_retry_failed, LU);
  83 STA_FILE(tx_retry_count, tx_retry_count, LU);
  84 STA_FILE(last_rssi, last_rssi, D);
  85 STA_FILE(last_signal, last_signal, D);
  86 STA_FILE(last_noise, last_noise, D);
  87 STA_FILE(channel_use, channel_use, D);
  88 STA_FILE(wep_weak_iv_count, wep_weak_iv_count, D);
  89
  90 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
  91                               size_t count, loff_t *ppos)
  92 {
  93         char buf[100];
  94         struct sta_info *sta = file->private_data;
  95         int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
  96                 sta->flags & WLAN_STA_AUTH ? "AUTH\n" : "",
  97                 sta->flags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
  98                 sta->flags & WLAN_STA_PS ? "PS\n" : "",
  99                 sta->flags & WLAN_STA_TIM ? "TIM\n" : "",
 100                 sta->flags & WLAN_STA_PERM ? "PERM\n" : "",
 101                 sta->flags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
 102                 sta->flags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
 103                 sta->flags & WLAN_STA_WME ? "WME\n" : "",
 104                 sta->flags & WLAN_STA_WDS ? "WDS\n" : "");
 105         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 106 }
 107 STA_OPS(flags);
 108
 109 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
 110                                           char __user *userbuf,
 111                                           size_t count, loff_t *ppos)
 112 {
 113         char buf[20];
 114         struct sta_info *sta = file->private_data;
 115         int res = scnprintf(buf, sizeof(buf), "%u\n",
 116                             skb_queue_len(&sta->ps_tx_buf));
 117         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 118 }
 119 STA_OPS(num_ps_buf_frames);
 120
 121 static ssize_t sta_last_ack_rssi_read(struct file *file, char __user *userbuf,
 122                                       size_t count, loff_t *ppos)
 123 {
 124         char buf[100];
 125         struct sta_info *sta = file->private_data;
 126         int res = scnprintf(buf, sizeof(buf), "%d %d %d\n",
 127                             sta->last_ack_rssi[0],
 128                             sta->last_ack_rssi[1],
 129                             sta->last_ack_rssi[2]);
 130         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 131 }
 132 STA_OPS(last_ack_rssi);
 133
 134 static ssize_t sta_last_ack_ms_read(struct file *file, char __user *userbuf,
 135                                     size_t count, loff_t *ppos)
 136 {
 137         char buf[20];
 138         struct sta_info *sta = file->private_data;
 139         int res = scnprintf(buf, sizeof(buf), "%d\n",
 140                             sta->last_ack ?
 141                             jiffies_to_msecs(jiffies - sta->last_ack) : -1);
 142         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 143 }
 144 STA_OPS(last_ack_ms);
 145
 146 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
 147                                     size_t count, loff_t *ppos)
 148 {
 149         char buf[20];
 150         struct sta_info *sta = file->private_data;
 151         int res = scnprintf(buf, sizeof(buf), "%d\n",
 152                             jiffies_to_msecs(jiffies - sta->last_rx));
 153         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 154 }
 155 STA_OPS(inactive_ms);
 156
 157 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
 158                                       size_t count, loff_t *ppos)
 159 {
 160         char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
 161         int i;
 162         struct sta_info *sta = file->private_data;
 163         for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
 164                 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
 165                                le16_to_cpu(sta->last_seq_ctrl[i]));
 166         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 167         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 168 }
 169 STA_OPS(last_seq_ctrl);
 170
 171 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 172 static ssize_t sta_wme_rx_queue_read(struct file *file, char __user *userbuf,
 173                                      size_t count, loff_t *ppos)
 174 {
 175         char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
 176         int i;
 177         struct sta_info *sta = file->private_data;
 178         for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
 179                 p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
 180                                sta->wme_rx_queue[i]);
 181         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 182         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 183 }
 184 STA_OPS(wme_rx_queue);
 185
 186 static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf,
 187                                      size_t count, loff_t *ppos)
 188 {
 189         char buf[15*NUM_TX_DATA_QUEUES], *p = buf;
 190         int i;
 191         struct sta_info *sta = file->private_data;
 192         for (i = 0; i < NUM_TX_DATA_QUEUES; i++)
 193                 p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
 194                                sta->wme_tx_queue[i]);
 195         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 196         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 197 }
 198 STA_OPS(wme_tx_queue);
 199 #endif
 200
 201 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
 202                                         size_t count, loff_t *ppos)
 203 {
 204         char buf[768], *p = buf;
 205         int i;
 206         struct sta_info *sta = file->private_data;
 207         p += scnprintf(p, sizeof(buf)+buf-p, "Agg state for STA is:\n");
 208         p += scnprintf(p, sizeof(buf)+buf-p, " STA next dialog_token is %d \n "
 209                         "TIDs info is: \n TID :",
 210                         (sta->ampdu_mlme.dialog_token_allocator + 1));
 211         for (i = 0; i < STA_TID_NUM; i++)
 212                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d", i);
 213
 214         p += scnprintf(p, sizeof(buf)+buf-p, "\n RX  :");
 215         for (i = 0; i < STA_TID_NUM; i++)
 216                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 217         sta->ampdu_mlme.tid_rx[i].state);
 218
 219         p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
 220         for (i = 0; i < STA_TID_NUM; i++)
 221                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 222                         sta->ampdu_mlme.tid_rx[i].dialog_token);
 223
 224         p += scnprintf(p, sizeof(buf)+buf-p, "\n TX  :");
 225         for (i = 0; i < STA_TID_NUM; i++)
 226                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 227                         sta->ampdu_mlme.tid_tx[i].state);
 228
 229         p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
 230         for (i = 0; i < STA_TID_NUM; i++)
 231                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 232                         sta->ampdu_mlme.tid_tx[i].dialog_token);
 233
 234         p += scnprintf(p, sizeof(buf)+buf-p, "\n SSN :");
 235         for (i = 0; i < STA_TID_NUM; i++)
 236                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 237                         sta->ampdu_mlme.tid_tx[i].ssn);
 238
 239         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 240
 241         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 242 }
 243
 244 static ssize_t sta_agg_status_write(struct file *file,
 245                 const char __user *user_buf, size_t count, loff_t *ppos)
 246 {
 247         struct sta_info *sta = file->private_data;
 248         struct net_device *dev = sta->dev;
 249         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 250         struct ieee80211_hw *hw = &local->hw;
 251         u8 *da = sta->addr;
 252         static int tid_static_tx[16] = {0, 0, 0, 0, 0, 0, 0, 0,
 253                                         0, 0, 0, 0, 0, 0, 0, 0};
 254         static int tid_static_rx[16] = {1, 1, 1, 1, 1, 1, 1, 1,
 255                                         1, 1, 1, 1, 1, 1, 1, 1};
 256         char *endp;
 257         char buf[32];
 258         int buf_size, rs;
 259         unsigned int tid_num;
 260         char state[4];
 261
 262         memset(buf, 0x00, sizeof(buf));
 263         buf_size = min(count, (sizeof(buf)-1));
 264         if (copy_from_user(buf, user_buf, buf_size))
 265                 return -EFAULT;
 266
 267         tid_num = simple_strtoul(buf, &endp, 0);
 268         if (endp == buf)
 269                 return -EINVAL;
 270
 271         if ((tid_num >= 100) && (tid_num <= 115)) {
 272                 /* toggle Rx aggregation command */
 273                 tid_num = tid_num - 100;
 274                 if (tid_static_rx[tid_num] == 1) {
 275                         strcpy(state, "off ");
 276                         ieee80211_sta_stop_rx_ba_session(dev, da, tid_num, 0,
 277                                         WLAN_REASON_QSTA_REQUIRE_SETUP);
 278                         sta->ampdu_mlme.tid_rx[tid_num].buf_size = 0xFF;
 279                         tid_static_rx[tid_num] = 0;
 280                 } else {
 281                         strcpy(state, "on ");
 282                         sta->ampdu_mlme.tid_rx[tid_num].buf_size = 0x00;
 283                         tid_static_rx[tid_num] = 1;
 284                 }
 285                 printk(KERN_DEBUG "debugfs - try switching tid %u %s\n",
 286                                 tid_num, state);
 287         } else if ((tid_num >= 0) && (tid_num <= 15)) {
 288                 /* toggle Tx aggregation command */
 289                 if (tid_static_tx[tid_num] == 0) {
 290                         strcpy(state, "on ");
 291                         rs =  ieee80211_start_tx_ba_session(hw, da, tid_num);
 292                         if (rs == 0)
 293                                 tid_static_tx[tid_num] = 1;
 294                 } else {
 295                         strcpy(state, "off");
 296                         rs =  ieee80211_stop_tx_ba_session(hw, da, tid_num, 1);
 297                         if (rs == 0)
 298                                 tid_static_tx[tid_num] = 0;
 299                 }
 300                 printk(KERN_DEBUG "debugfs - switching tid %u %s, return=%d\n",
 301                                 tid_num, state, rs);
 302         }
 303
 304         return count;
 305 }
 306 STA_OPS_WR(agg_status);
 307
 308 #define DEBUGFS_ADD(name) \
 309         sta->debugfs.name = debugfs_create_file(#name, 0444, \
 310                 sta->debugfs.dir, sta, &sta_ ##name## _ops);
 311
 312 #define DEBUGFS_DEL(name) \
 313         debugfs_remove(sta->debugfs.name);\
 314         sta->debugfs.name = NULL;
 315
 316
 317 void ieee80211_sta_debugfs_add(struct sta_info *sta)
 318 {
 319         struct dentry *stations_dir = sta->local->debugfs.stations;
 320         DECLARE_MAC_BUF(mac);
 321
 322         if (!stations_dir)
 323                 return;
 324
 325         print_mac(mac, sta->addr);
 326
 327         sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
 328         if (!sta->debugfs.dir)
 329                 return;
 330
 331         DEBUGFS_ADD(flags);
 332         DEBUGFS_ADD(num_ps_buf_frames);
 333         DEBUGFS_ADD(last_ack_rssi);
 334         DEBUGFS_ADD(last_ack_ms);
 335         DEBUGFS_ADD(inactive_ms);
 336         DEBUGFS_ADD(last_seq_ctrl);
 337 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 338         DEBUGFS_ADD(wme_rx_queue);
 339         DEBUGFS_ADD(wme_tx_queue);
 340 #endif
 341         DEBUGFS_ADD(agg_status);
 342 }
 343
 344 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
 345 {
 346         DEBUGFS_DEL(flags);
 347         DEBUGFS_DEL(num_ps_buf_frames);
 348         DEBUGFS_DEL(last_ack_rssi);
 349         DEBUGFS_DEL(last_ack_ms);
 350         DEBUGFS_DEL(inactive_ms);
 351         DEBUGFS_DEL(last_seq_ctrl);
 352 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 353         DEBUGFS_DEL(wme_rx_queue);
 354         DEBUGFS_DEL(wme_tx_queue);
 355 #endif
 356         DEBUGFS_DEL(agg_status);
 357
 358         debugfs_remove(sta->debugfs.dir);
 359         sta->debugfs.dir = NULL;
 360 }