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