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