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_FILE(name, field, format)                                   \
  59                 STA_READ_##format(name, field)                          \
  60                 STA_OPS(name)
  61
  62 STA_FILE(aid, aid, D);
  63 STA_FILE(dev, dev->name, S);
  64 STA_FILE(rx_packets, rx_packets, LU);
  65 STA_FILE(tx_packets, tx_packets, LU);
  66 STA_FILE(rx_bytes, rx_bytes, LU);
  67 STA_FILE(tx_bytes, tx_bytes, LU);
  68 STA_FILE(rx_duplicates, num_duplicates, LU);
  69 STA_FILE(rx_fragments, rx_fragments, LU);
  70 STA_FILE(rx_dropped, rx_dropped, LU);
  71 STA_FILE(tx_fragments, tx_fragments, LU);
  72 STA_FILE(tx_filtered, tx_filtered_count, LU);
  73 STA_FILE(txrate, txrate, RATE);
  74 STA_FILE(last_txrate, last_txrate, RATE);
  75 STA_FILE(tx_retry_failed, tx_retry_failed, LU);
  76 STA_FILE(tx_retry_count, tx_retry_count, LU);
  77 STA_FILE(last_rssi, last_rssi, D);
  78 STA_FILE(last_signal, last_signal, D);
  79 STA_FILE(last_noise, last_noise, D);
  80 STA_FILE(channel_use, channel_use, D);
  81 STA_FILE(wep_weak_iv_count, wep_weak_iv_count, D);
  82
  83 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
  84                               size_t count, loff_t *ppos)
  85 {
  86         char buf[100];
  87         struct sta_info *sta = file->private_data;
  88         int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
  89                 sta->flags & WLAN_STA_AUTH ? "AUTH\n" : "",
  90                 sta->flags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
  91                 sta->flags & WLAN_STA_PS ? "PS\n" : "",
  92                 sta->flags & WLAN_STA_TIM ? "TIM\n" : "",
  93                 sta->flags & WLAN_STA_PERM ? "PERM\n" : "",
  94                 sta->flags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
  95                 sta->flags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
  96                 sta->flags & WLAN_STA_WME ? "WME\n" : "",
  97                 sta->flags & WLAN_STA_WDS ? "WDS\n" : "");
  98         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
  99 }
 100 STA_OPS(flags);
 101
 102 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
 103                                           char __user *userbuf,
 104                                           size_t count, loff_t *ppos)
 105 {
 106         char buf[20];
 107         struct sta_info *sta = file->private_data;
 108         int res = scnprintf(buf, sizeof(buf), "%u\n",
 109                             skb_queue_len(&sta->ps_tx_buf));
 110         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 111 }
 112 STA_OPS(num_ps_buf_frames);
 113
 114 static ssize_t sta_last_ack_rssi_read(struct file *file, char __user *userbuf,
 115                                       size_t count, loff_t *ppos)
 116 {
 117         char buf[100];
 118         struct sta_info *sta = file->private_data;
 119         int res = scnprintf(buf, sizeof(buf), "%d %d %d\n",
 120                             sta->last_ack_rssi[0],
 121                             sta->last_ack_rssi[1],
 122                             sta->last_ack_rssi[2]);
 123         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 124 }
 125 STA_OPS(last_ack_rssi);
 126
 127 static ssize_t sta_last_ack_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                             sta->last_ack ?
 134                             jiffies_to_msecs(jiffies - sta->last_ack) : -1);
 135         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 136 }
 137 STA_OPS(last_ack_ms);
 138
 139 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
 140                                     size_t count, loff_t *ppos)
 141 {
 142         char buf[20];
 143         struct sta_info *sta = file->private_data;
 144         int res = scnprintf(buf, sizeof(buf), "%d\n",
 145                             jiffies_to_msecs(jiffies - sta->last_rx));
 146         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 147 }
 148 STA_OPS(inactive_ms);
 149
 150 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
 151                                       size_t count, loff_t *ppos)
 152 {
 153         char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
 154         int i;
 155         struct sta_info *sta = file->private_data;
 156         for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
 157                 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
 158                                le16_to_cpu(sta->last_seq_ctrl[i]));
 159         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 160         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 161 }
 162 STA_OPS(last_seq_ctrl);
 163
 164 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 165 static ssize_t sta_wme_rx_queue_read(struct file *file, char __user *userbuf,
 166                                      size_t count, loff_t *ppos)
 167 {
 168         char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
 169         int i;
 170         struct sta_info *sta = file->private_data;
 171         for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
 172                 p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
 173                                sta->wme_rx_queue[i]);
 174         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 175         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 176 }
 177 STA_OPS(wme_rx_queue);
 178
 179 static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf,
 180                                      size_t count, loff_t *ppos)
 181 {
 182         char buf[15*NUM_TX_DATA_QUEUES], *p = buf;
 183         int i;
 184         struct sta_info *sta = file->private_data;
 185         for (i = 0; i < NUM_TX_DATA_QUEUES; i++)
 186                 p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
 187                                sta->wme_tx_queue[i]);
 188         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 189         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 190 }
 191 STA_OPS(wme_tx_queue);
 192 #endif
 193
 194 #define DEBUGFS_ADD(name) \
 195         sta->debugfs.name = debugfs_create_file(#name, 0444, \
 196                 sta->debugfs.dir, sta, &sta_ ##name## _ops);
 197
 198 #define DEBUGFS_DEL(name) \
 199         debugfs_remove(sta->debugfs.name);\
 200         sta->debugfs.name = NULL;
 201
 202
 203 void ieee80211_sta_debugfs_add(struct sta_info *sta)
 204 {
 205         struct dentry *stations_dir = sta->local->debugfs.stations;
 206         DECLARE_MAC_BUF(mac);
 207
 208         if (!stations_dir)
 209                 return;
 210
 211         print_mac(mac, sta->addr);
 212
 213         sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
 214         if (!sta->debugfs.dir)
 215                 return;
 216
 217         DEBUGFS_ADD(flags);
 218         DEBUGFS_ADD(num_ps_buf_frames);
 219         DEBUGFS_ADD(last_ack_rssi);
 220         DEBUGFS_ADD(last_ack_ms);
 221         DEBUGFS_ADD(inactive_ms);
 222         DEBUGFS_ADD(last_seq_ctrl);
 223 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 224         DEBUGFS_ADD(wme_rx_queue);
 225         DEBUGFS_ADD(wme_tx_queue);
 226 #endif
 227 }
 228
 229 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
 230 {
 231         DEBUGFS_DEL(flags);
 232         DEBUGFS_DEL(num_ps_buf_frames);
 233         DEBUGFS_DEL(last_ack_rssi);
 234         DEBUGFS_DEL(last_ack_ms);
 235         DEBUGFS_DEL(inactive_ms);
 236         DEBUGFS_DEL(last_seq_ctrl);
 237 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 238         DEBUGFS_DEL(wme_rx_queue);
 239         DEBUGFS_DEL(wme_tx_queue);
 240 #endif
 241
 242         debugfs_remove(sta->debugfs.dir);
 243         sta->debugfs.dir = NULL;
 244 }