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(key_idx_compression, key_idx_compression, D);
  64 STA_FILE(dev, dev->name, S);
  65 STA_FILE(vlan_id, vlan_id, D);
  66 STA_FILE(rx_packets, rx_packets, LU);
  67 STA_FILE(tx_packets, tx_packets, LU);
  68 STA_FILE(rx_bytes, rx_bytes, LU);
  69 STA_FILE(tx_bytes, tx_bytes, LU);
  70 STA_FILE(rx_duplicates, num_duplicates, LU);
  71 STA_FILE(rx_fragments, rx_fragments, LU);
  72 STA_FILE(rx_dropped, rx_dropped, LU);
  73 STA_FILE(tx_fragments, tx_fragments, LU);
  74 STA_FILE(tx_filtered, tx_filtered_count, LU);
  75 STA_FILE(txrate, txrate, RATE);
  76 STA_FILE(last_txrate, last_txrate, RATE);
  77 STA_FILE(tx_retry_failed, tx_retry_failed, LU);
  78 STA_FILE(tx_retry_count, tx_retry_count, LU);
  79 STA_FILE(last_rssi, last_rssi, D);
  80 STA_FILE(last_signal, last_signal, D);
  81 STA_FILE(last_noise, last_noise, D);
  82 STA_FILE(channel_use, channel_use, D);
  83 STA_FILE(wep_weak_iv_count, wep_weak_iv_count, D);
  84
  85 static ssize_t sta_flags_read(struct file *file, char __user *userbuf,
  86                               size_t count, loff_t *ppos)
  87 {
  88         char buf[100];
  89         struct sta_info *sta = file->private_data;
  90         int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s%s%s",
  91                 sta->flags & WLAN_STA_AUTH ? "AUTH\n" : "",
  92                 sta->flags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
  93                 sta->flags & WLAN_STA_PS ? "PS\n" : "",
  94                 sta->flags & WLAN_STA_TIM ? "TIM\n" : "",
  95                 sta->flags & WLAN_STA_PERM ? "PERM\n" : "",
  96                 sta->flags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
  97                 sta->flags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
  98                 sta->flags & WLAN_STA_WME ? "WME\n" : "",
  99                 sta->flags & WLAN_STA_WDS ? "WDS\n" : "");
 100         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 101 }
 102 STA_OPS(flags);
 103
 104 static ssize_t sta_num_ps_buf_frames_read(struct file *file,
 105                                           char __user *userbuf,
 106                                           size_t count, loff_t *ppos)
 107 {
 108         char buf[20];
 109         struct sta_info *sta = file->private_data;
 110         int res = scnprintf(buf, sizeof(buf), "%u\n",
 111                             skb_queue_len(&sta->ps_tx_buf));
 112         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 113 }
 114 STA_OPS(num_ps_buf_frames);
 115
 116 static ssize_t sta_last_ack_rssi_read(struct file *file, char __user *userbuf,
 117                                       size_t count, loff_t *ppos)
 118 {
 119         char buf[100];
 120         struct sta_info *sta = file->private_data;
 121         int res = scnprintf(buf, sizeof(buf), "%d %d %d\n",
 122                             sta->last_ack_rssi[0],
 123                             sta->last_ack_rssi[1],
 124                             sta->last_ack_rssi[2]);
 125         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 126 }
 127 STA_OPS(last_ack_rssi);
 128
 129 static ssize_t sta_last_ack_ms_read(struct file *file, char __user *userbuf,
 130                                     size_t count, loff_t *ppos)
 131 {
 132         char buf[20];
 133         struct sta_info *sta = file->private_data;
 134         int res = scnprintf(buf, sizeof(buf), "%d\n",
 135                             sta->last_ack ?
 136                             jiffies_to_msecs(jiffies - sta->last_ack) : -1);
 137         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 138 }
 139 STA_OPS(last_ack_ms);
 140
 141 static ssize_t sta_inactive_ms_read(struct file *file, char __user *userbuf,
 142                                     size_t count, loff_t *ppos)
 143 {
 144         char buf[20];
 145         struct sta_info *sta = file->private_data;
 146         int res = scnprintf(buf, sizeof(buf), "%d\n",
 147                             jiffies_to_msecs(jiffies - sta->last_rx));
 148         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 149 }
 150 STA_OPS(inactive_ms);
 151
 152 static ssize_t sta_last_seq_ctrl_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, "%x ",
 160                                sta->last_seq_ctrl[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(last_seq_ctrl);
 165
 166 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 167 static ssize_t sta_wme_rx_queue_read(struct file *file, char __user *userbuf,
 168                                      size_t count, loff_t *ppos)
 169 {
 170         char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
 171         int i;
 172         struct sta_info *sta = file->private_data;
 173         for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
 174                 p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
 175                                sta->wme_rx_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_rx_queue);
 180
 181 static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf,
 182                                      size_t count, loff_t *ppos)
 183 {
 184         char buf[15*NUM_TX_DATA_QUEUES], *p = buf;
 185         int i;
 186         struct sta_info *sta = file->private_data;
 187         for (i = 0; i < NUM_TX_DATA_QUEUES; i++)
 188                 p += scnprintf(p, sizeof(buf)+buf-p, "%u ",
 189                                sta->wme_tx_queue[i]);
 190         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 191         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 192 }
 193 STA_OPS(wme_tx_queue);
 194 #endif
 195
 196 #define DEBUGFS_ADD(name) \
 197         sta->debugfs.name = debugfs_create_file(#name, 0444, \
 198                 sta->debugfs.dir, sta, &sta_ ##name## _ops);
 199
 200 #define DEBUGFS_DEL(name) \
 201         debugfs_remove(sta->debugfs.name);\
 202         sta->debugfs.name = NULL;
 203
 204
 205 void ieee80211_sta_debugfs_add(struct sta_info *sta)
 206 {
 207         char buf[3*6];
 208         struct dentry *stations_dir = sta->local->debugfs.stations;
 209
 210         if (!stations_dir)
 211                 return;
 212
 213         sprintf(buf, MAC_FMT, MAC_ARG(sta->addr));
 214
 215         sta->debugfs.dir = debugfs_create_dir(buf, stations_dir);
 216         if (!sta->debugfs.dir)
 217                 return;
 218
 219         DEBUGFS_ADD(flags);
 220         DEBUGFS_ADD(num_ps_buf_frames);
 221         DEBUGFS_ADD(last_ack_rssi);
 222         DEBUGFS_ADD(last_ack_ms);
 223         DEBUGFS_ADD(inactive_ms);
 224         DEBUGFS_ADD(last_seq_ctrl);
 225 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 226         DEBUGFS_ADD(wme_rx_queue);
 227         DEBUGFS_ADD(wme_tx_queue);
 228 #endif
 229 }
 230
 231 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
 232 {
 233         DEBUGFS_DEL(flags);
 234         DEBUGFS_DEL(num_ps_buf_frames);
 235         DEBUGFS_DEL(last_ack_rssi);
 236         DEBUGFS_DEL(last_ack_ms);
 237         DEBUGFS_DEL(inactive_ms);
 238         DEBUGFS_DEL(last_seq_ctrl);
 239 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS
 240         DEBUGFS_DEL(wme_rx_queue);
 241         DEBUGFS_DEL(wme_tx_queue);
 242 #endif
 243
 244         debugfs_remove(sta->debugfs.dir);
 245         sta->debugfs.dir = NULL;
 246 }