package/mac80211/src/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",
  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_AUTHORIZED ? "AUTHORIZED\n" : "",
  83                 sta->flags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
  84                 sta->flags & WLAN_STA_WME ? "WME\n" : "",
  85                 sta->flags & WLAN_STA_WDS ? "WDS\n" : "");
  86         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
  87 }
  88 STA_OPS(flags);
  89
  90 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
  91                                           char __user *userbuf,
  92                                           size_t count, loff_t *ppos)
  93 {
  94         char buf[20];
  95         struct sta_info *sta = file->private_data;
  96         int res = scnprintf(buf, sizeof(buf), "%u\n",
  97                             skb_queue_len(&sta->ps_tx_buf));
  98         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
  99 }
 100 STA_OPS(num_ps_buf_frames);
 101
 102 static ssize_t sta_last_ack_rssi_read(struct file *file, char __user *userbuf,
 103                                       size_t count, loff_t *ppos)
 104 {
 105         char buf[100];
 106         struct sta_info *sta = file->private_data;
 107         int res = scnprintf(buf, sizeof(buf), "%d %d %d\n",
 108                             sta->last_ack_rssi[0],
 109                             sta->last_ack_rssi[1],
 110                             sta->last_ack_rssi[2]);
 111         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 112 }
 113 STA_OPS(last_ack_rssi);
 114
 115 static ssize_t sta_last_ack_ms_read(struct file *file, char __user *userbuf,
 116                                     size_t count, loff_t *ppos)
 117 {
 118         char buf[20];
 119         struct sta_info *sta = file->private_data;
 120         int res = scnprintf(buf, sizeof(buf), "%d\n",
 121                             sta->last_ack ?
 122                             jiffies_to_msecs(jiffies - sta->last_ack) : -1);
 123         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 124 }
 125 STA_OPS(last_ack_ms);
 126
 127 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
 128                                     size_t count, loff_t *ppos)
 129 {
 130         char buf[20];
 131         struct sta_info *sta = file->private_data;
 132         int res = scnprintf(buf, sizeof(buf), "%d\n",
 133                             jiffies_to_msecs(jiffies - sta->last_rx));
 134         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 135 }
 136 STA_OPS(inactive_ms);
 137
 138 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
 139                                       size_t count, loff_t *ppos)
 140 {
 141         char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
 142         int i;
 143         struct sta_info *sta = file->private_data;
 144         for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
 145                 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
 146                                le16_to_cpu(sta->last_seq_ctrl[i]));
 147         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 148         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 149 }
 150 STA_OPS(last_seq_ctrl);
 151
 152 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 153 static ssize_t sta_wme_rx_queue_read(struct file *file, char __user *userbuf,
 154                                      size_t count, loff_t *ppos)
 155 {
 156         char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
 157         int i;
 158         struct sta_info *sta = file->private_data;
 159         for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
 160                 p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
 161                                sta->wme_rx_queue[i]);
 162         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 163         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 164 }
 165 STA_OPS(wme_rx_queue);
 166
 167 static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf,
 168                                      size_t count, loff_t *ppos)
 169 {
 170         char buf[15*NUM_TX_DATA_QUEUES], *p = buf;
 171         int i;
 172         struct sta_info *sta = file->private_data;
 173         for (i = 0; i < NUM_TX_DATA_QUEUES; i++)
 174                 p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
 175                                sta->wme_tx_queue[i]);
 176         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 177         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 178 }
 179 STA_OPS(wme_tx_queue);
 180 #endif
 181
 182 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
 183                                         size_t count, loff_t *ppos)
 184 {
 185         char buf[768], *p = buf;
 186         int i;
 187         struct sta_info *sta = file->private_data;
 188         p += scnprintf(p, sizeof(buf)+buf-p, "Agg state for STA is:\n");
 189         p += scnprintf(p, sizeof(buf)+buf-p, " STA next dialog_token is %d \n "
 190                         "TIDs info is: \n TID :",
 191                         (sta->ampdu_mlme.dialog_token_allocator + 1));
 192         for (i = 0; i < STA_TID_NUM; i++)
 193                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d", i);
 194
 195         p += scnprintf(p, sizeof(buf)+buf-p, "\n RX  :");
 196         for (i = 0; i < STA_TID_NUM; i++)
 197                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 198         sta->ampdu_mlme.tid_rx[i].state);
 199
 200         p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
 201         for (i = 0; i < STA_TID_NUM; i++)
 202                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 203                         sta->ampdu_mlme.tid_rx[i].dialog_token);
 204
 205         p += scnprintf(p, sizeof(buf)+buf-p, "\n TX  :");
 206         for (i = 0; i < STA_TID_NUM; i++)
 207                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 208                         sta->ampdu_mlme.tid_tx[i].state);
 209
 210         p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
 211         for (i = 0; i < STA_TID_NUM; i++)
 212                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 213                         sta->ampdu_mlme.tid_tx[i].dialog_token);
 214
 215         p += scnprintf(p, sizeof(buf)+buf-p, "\n SSN :");
 216         for (i = 0; i < STA_TID_NUM; i++)
 217                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 218                         sta->ampdu_mlme.tid_tx[i].ssn);
 219
 220         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 221
 222         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 223 }
 224
 225 static ssize_t sta_agg_status_write(struct file *file,
 226                 const char __user *user_buf, size_t count, loff_t *ppos)
 227 {
 228         struct sta_info *sta = file->private_data;
 229         struct net_device *dev = sta->dev;
 230         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 231         struct ieee80211_hw *hw = &local->hw;
 232         u8 *da = sta->addr;
 233         static int tid_static_tx[16] = {0, 0, 0, 0, 0, 0, 0, 0,
 234                                         0, 0, 0, 0, 0, 0, 0, 0};
 235         static int tid_static_rx[16] = {1, 1, 1, 1, 1, 1, 1, 1,
 236                                         1, 1, 1, 1, 1, 1, 1, 1};
 237         char *endp;
 238         char buf[32];
 239         int buf_size, rs;
 240         unsigned int tid_num;
 241         char state[4];
 242
 243         memset(buf, 0x00, sizeof(buf));
 244         buf_size = min(count, (sizeof(buf)-1));
 245         if (copy_from_user(buf, user_buf, buf_size))
 246                 return -EFAULT;
 247
 248         tid_num = simple_strtoul(buf, &endp, 0);
 249         if (endp == buf)
 250                 return -EINVAL;
 251
 252         if ((tid_num >= 100) && (tid_num <= 115)) {
 253                 /* toggle Rx aggregation command */
 254                 tid_num = tid_num - 100;
 255                 if (tid_static_rx[tid_num] == 1) {
 256                         strcpy(state, "off ");
 257                         ieee80211_sta_stop_rx_ba_session(dev, da, tid_num, 0,
 258                                         WLAN_REASON_QSTA_REQUIRE_SETUP);
 259                         sta->ampdu_mlme.tid_rx[tid_num].buf_size = 0xFF;
 260                         tid_static_rx[tid_num] = 0;
 261                 } else {
 262                         strcpy(state, "on ");
 263                         sta->ampdu_mlme.tid_rx[tid_num].buf_size = 0x00;
 264                         tid_static_rx[tid_num] = 1;
 265                 }
 266                 printk(KERN_DEBUG "debugfs - try switching tid %u %s\n",
 267                                 tid_num, state);
 268         } else if ((tid_num >= 0) && (tid_num <= 15)) {
 269                 /* toggle Tx aggregation command */
 270                 if (tid_static_tx[tid_num] == 0) {
 271                         strcpy(state, "on ");
 272                         rs =  ieee80211_start_tx_ba_session(hw, da, tid_num);
 273                         if (rs == 0)
 274                                 tid_static_tx[tid_num] = 1;
 275                 } else {
 276                         strcpy(state, "off");
 277                         rs =  ieee80211_stop_tx_ba_session(hw, da, tid_num, 1);
 278                         if (rs == 0)
 279                                 tid_static_tx[tid_num] = 0;
 280                 }
 281                 printk(KERN_DEBUG "debugfs - switching tid %u %s, return=%d\n",
 282                                 tid_num, state, rs);
 283         }
 284
 285         return count;
 286 }
 287 STA_OPS_WR(agg_status);
 288
 289 #define DEBUGFS_ADD(name) \
 290         sta->debugfs.name = debugfs_create_file(#name, 0444, \
 291                 sta->debugfs.dir, sta, &sta_ ##name## _ops);
 292
 293 #define DEBUGFS_DEL(name) \
 294         debugfs_remove(sta->debugfs.name);\
 295         sta->debugfs.name = NULL;
 296
 297
 298 void ieee80211_sta_debugfs_add(struct sta_info *sta)
 299 {
 300         struct dentry *stations_dir = sta->local->debugfs.stations;
 301         DECLARE_MAC_BUF(mac);
 302
 303         if (!stations_dir)
 304                 return;
 305
 306         print_mac(mac, sta->addr);
 307
 308         sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
 309         if (!sta->debugfs.dir)
 310                 return;
 311
 312         DEBUGFS_ADD(flags);
 313         DEBUGFS_ADD(num_ps_buf_frames);
 314         DEBUGFS_ADD(last_ack_rssi);
 315         DEBUGFS_ADD(last_ack_ms);
 316         DEBUGFS_ADD(inactive_ms);
 317         DEBUGFS_ADD(last_seq_ctrl);
 318 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 319         DEBUGFS_ADD(wme_rx_queue);
 320         DEBUGFS_ADD(wme_tx_queue);
 321 #endif
 322         DEBUGFS_ADD(agg_status);
 323 }
 324
 325 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
 326 {
 327         DEBUGFS_DEL(flags);
 328         DEBUGFS_DEL(num_ps_buf_frames);
 329         DEBUGFS_DEL(last_ack_rssi);
 330         DEBUGFS_DEL(last_ack_ms);
 331         DEBUGFS_DEL(inactive_ms);
 332         DEBUGFS_DEL(last_seq_ctrl);
 333 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 334         DEBUGFS_DEL(wme_rx_queue);
 335         DEBUGFS_DEL(wme_tx_queue);
 336 #endif
 337         DEBUGFS_DEL(agg_status);
 338
 339         debugfs_remove(sta->debugfs.dir);
 340         sta->debugfs.dir = NULL;
 341 }