git.oblomov.eu Git - linux-2.6/blob - 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, sdata->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_signal, last_signal, D);
  67 STA_FILE(last_qual, last_qual, 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, LU);
  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         u32 staflags = get_sta_flags(sta);
  78         int res = scnprintf(buf, sizeof(buf), "%s%s%s%s%s%s%s",
  79                 staflags & WLAN_STA_AUTH ? "AUTH\n" : "",
  80                 staflags & WLAN_STA_ASSOC ? "ASSOC\n" : "",
  81                 staflags & WLAN_STA_PS ? "PS\n" : "",
  82                 staflags & WLAN_STA_AUTHORIZED ? "AUTHORIZED\n" : "",
  83                 staflags & WLAN_STA_SHORT_PREAMBLE ? "SHORT PREAMBLE\n" : "",
  84                 staflags & WLAN_STA_WME ? "WME\n" : "",
  85                 staflags & 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_inactive_ms_read(struct file *file, char __user *userbuf,
 103                                     size_t count, loff_t *ppos)
 104 {
 105         char buf[20];
 106         struct sta_info *sta = file->private_data;
 107         int res = scnprintf(buf, sizeof(buf), "%d\n",
 108                             jiffies_to_msecs(jiffies - sta->last_rx));
 109         return simple_read_from_buffer(userbuf, count, ppos, buf, res);
 110 }
 111 STA_OPS(inactive_ms);
 112
 113 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf,
 114                                       size_t count, loff_t *ppos)
 115 {
 116         char buf[15*NUM_RX_DATA_QUEUES], *p = buf;
 117         int i;
 118         struct sta_info *sta = file->private_data;
 119         for (i = 0; i < NUM_RX_DATA_QUEUES; i++)
 120                 p += scnprintf(p, sizeof(buf)+buf-p, "%x ",
 121                                le16_to_cpu(sta->last_seq_ctrl[i]));
 122         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 123         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 124 }
 125 STA_OPS(last_seq_ctrl);
 126
 127 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf,
 128                                         size_t count, loff_t *ppos)
 129 {
 130         char buf[768], *p = buf;
 131         int i;
 132         struct sta_info *sta = file->private_data;
 133         p += scnprintf(p, sizeof(buf)+buf-p, "Agg state for STA is:\n");
 134         p += scnprintf(p, sizeof(buf)+buf-p, " STA next dialog_token is %d \n "
 135                         "TIDs info is: \n TID :",
 136                         (sta->ampdu_mlme.dialog_token_allocator + 1));
 137         for (i = 0; i < STA_TID_NUM; i++)
 138                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d", i);
 139
 140         p += scnprintf(p, sizeof(buf)+buf-p, "\n RX  :");
 141         for (i = 0; i < STA_TID_NUM; i++)
 142                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 143                         sta->ampdu_mlme.tid_state_rx[i]);
 144
 145         p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
 146         for (i = 0; i < STA_TID_NUM; i++)
 147                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 148                         sta->ampdu_mlme.tid_state_rx[i]?
 149                         sta->ampdu_mlme.tid_rx[i]->dialog_token : 0);
 150
 151         p += scnprintf(p, sizeof(buf)+buf-p, "\n TX  :");
 152         for (i = 0; i < STA_TID_NUM; i++)
 153                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 154                         sta->ampdu_mlme.tid_state_tx[i]);
 155
 156         p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:");
 157         for (i = 0; i < STA_TID_NUM; i++)
 158                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 159                         sta->ampdu_mlme.tid_state_tx[i]?
 160                         sta->ampdu_mlme.tid_tx[i]->dialog_token : 0);
 161
 162         p += scnprintf(p, sizeof(buf)+buf-p, "\n SSN :");
 163         for (i = 0; i < STA_TID_NUM; i++)
 164                 p += scnprintf(p, sizeof(buf)+buf-p, "%5d",
 165                         sta->ampdu_mlme.tid_state_tx[i]?
 166                         sta->ampdu_mlme.tid_tx[i]->ssn : 0);
 167
 168         p += scnprintf(p, sizeof(buf)+buf-p, "\n");
 169
 170         return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf);
 171 }
 172
 173 static ssize_t sta_agg_status_write(struct file *file,
 174                 const char __user *user_buf, size_t count, loff_t *ppos)
 175 {
 176         struct sta_info *sta = file->private_data;
 177         struct net_device *dev = sta->sdata->dev;
 178         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 179         struct ieee80211_hw *hw = &local->hw;
 180         u8 *da = sta->addr;
 181         static int tid_static_tx[16] = {0, 0, 0, 0, 0, 0, 0, 0,
 182                                         0, 0, 0, 0, 0, 0, 0, 0};
 183         static int tid_static_rx[16] = {1, 1, 1, 1, 1, 1, 1, 1,
 184                                         1, 1, 1, 1, 1, 1, 1, 1};
 185         char *endp;
 186         char buf[32];
 187         int buf_size, rs;
 188         unsigned int tid_num;
 189         char state[4];
 190
 191         memset(buf, 0x00, sizeof(buf));
 192         buf_size = min(count, (sizeof(buf)-1));
 193         if (copy_from_user(buf, user_buf, buf_size))
 194                 return -EFAULT;
 195
 196         tid_num = simple_strtoul(buf, &endp, 0);
 197         if (endp == buf)
 198                 return -EINVAL;
 199
 200         if ((tid_num >= 100) && (tid_num <= 115)) {
 201                 /* toggle Rx aggregation command */
 202                 tid_num = tid_num - 100;
 203                 if (tid_static_rx[tid_num] == 1) {
 204                         strcpy(state, "off ");
 205                         ieee80211_sta_stop_rx_ba_session(dev, da, tid_num, 0,
 206                                         WLAN_REASON_QSTA_REQUIRE_SETUP);
 207                         sta->ampdu_mlme.tid_state_rx[tid_num] |=
 208                                         HT_AGG_STATE_DEBUGFS_CTL;
 209                         tid_static_rx[tid_num] = 0;
 210                 } else {
 211                         strcpy(state, "on ");
 212                         sta->ampdu_mlme.tid_state_rx[tid_num] &=
 213                                         ~HT_AGG_STATE_DEBUGFS_CTL;
 214                         tid_static_rx[tid_num] = 1;
 215                 }
 216                 printk(KERN_DEBUG "debugfs - try switching tid %u %s\n",
 217                                 tid_num, state);
 218         } else if ((tid_num >= 0) && (tid_num <= 15)) {
 219                 /* toggle Tx aggregation command */
 220                 if (tid_static_tx[tid_num] == 0) {
 221                         strcpy(state, "on ");
 222                         rs =  ieee80211_start_tx_ba_session(hw, da, tid_num);
 223                         if (rs == 0)
 224                                 tid_static_tx[tid_num] = 1;
 225                 } else {
 226                         strcpy(state, "off");
 227                         rs =  ieee80211_stop_tx_ba_session(hw, da, tid_num, 1);
 228                         if (rs == 0)
 229                                 tid_static_tx[tid_num] = 0;
 230                 }
 231                 printk(KERN_DEBUG "debugfs - switching tid %u %s, return=%d\n",
 232                                 tid_num, state, rs);
 233         }
 234
 235         return count;
 236 }
 237 STA_OPS_WR(agg_status);
 238
 239 #define DEBUGFS_ADD(name) \
 240         sta->debugfs.name = debugfs_create_file(#name, 0400, \
 241                 sta->debugfs.dir, sta, &sta_ ##name## _ops);
 242
 243 #define DEBUGFS_DEL(name) \
 244         debugfs_remove(sta->debugfs.name);\
 245         sta->debugfs.name = NULL;
 246
 247
 248 void ieee80211_sta_debugfs_add(struct sta_info *sta)
 249 {
 250         struct dentry *stations_dir = sta->local->debugfs.stations;
 251         DECLARE_MAC_BUF(mbuf);
 252         u8 *mac;
 253
 254         if (!stations_dir)
 255                 return;
 256
 257         mac = print_mac(mbuf, sta->addr);
 258
 259         sta->debugfs.dir = debugfs_create_dir(mac, stations_dir);
 260         if (!sta->debugfs.dir)
 261                 return;
 262
 263         DEBUGFS_ADD(flags);
 264         DEBUGFS_ADD(num_ps_buf_frames);
 265         DEBUGFS_ADD(inactive_ms);
 266         DEBUGFS_ADD(last_seq_ctrl);
 267         DEBUGFS_ADD(agg_status);
 268 }
 269
 270 void ieee80211_sta_debugfs_remove(struct sta_info *sta)
 271 {
 272         DEBUGFS_DEL(flags);
 273         DEBUGFS_DEL(num_ps_buf_frames);
 274         DEBUGFS_DEL(inactive_ms);
 275         DEBUGFS_DEL(last_seq_ctrl);
 276         DEBUGFS_DEL(agg_status);
 277
 278         debugfs_remove(sta->debugfs.dir);
 279         sta->debugfs.dir = NULL;
 280 }