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_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, 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 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_inactive_ms_read(struct file *file, char __user *userbuf, 102 size_t count, loff_t *ppos) 103 { 104 char buf[20]; 105 struct sta_info *sta = file->private_data; 106 int res = scnprintf(buf, sizeof(buf), "%d\n", 107 jiffies_to_msecs(jiffies - sta->last_rx)); 108 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 109 } 110 STA_OPS(inactive_ms); 111 112 static ssize_t sta_last_seq_ctrl_read(struct file *file, char __user *userbuf, 113 size_t count, loff_t *ppos) 114 { 115 char buf[15*NUM_RX_DATA_QUEUES], *p = buf; 116 int i; 117 struct sta_info *sta = file->private_data; 118 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) 119 p += scnprintf(p, sizeof(buf)+buf-p, "%x ", 120 le16_to_cpu(sta->last_seq_ctrl[i])); 121 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 122 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 123 } 124 STA_OPS(last_seq_ctrl); 125 126 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 127 static ssize_t sta_wme_rx_queue_read(struct file *file, char __user *userbuf, 128 size_t count, loff_t *ppos) 129 { 130 char buf[15*NUM_RX_DATA_QUEUES], *p = buf; 131 int i; 132 struct sta_info *sta = file->private_data; 133 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) 134 p += scnprintf(p, sizeof(buf)+buf-p, "%u ", 135 sta->wme_rx_queue[i]); 136 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 137 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 138 } 139 STA_OPS(wme_rx_queue); 140 141 static ssize_t sta_wme_tx_queue_read(struct file *file, char __user *userbuf, 142 size_t count, loff_t *ppos) 143 { 144 char buf[15*NUM_TX_DATA_QUEUES], *p = buf; 145 int i; 146 struct sta_info *sta = file->private_data; 147 for (i = 0; i < NUM_TX_DATA_QUEUES; i++) 148 p += scnprintf(p, sizeof(buf)+buf-p, "%u ", 149 sta->wme_tx_queue[i]); 150 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 151 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 152 } 153 STA_OPS(wme_tx_queue); 154 #endif 155 156 static ssize_t sta_agg_status_read(struct file *file, char __user *userbuf, 157 size_t count, loff_t *ppos) 158 { 159 char buf[768], *p = buf; 160 int i; 161 struct sta_info *sta = file->private_data; 162 p += scnprintf(p, sizeof(buf)+buf-p, "Agg state for STA is:\n"); 163 p += scnprintf(p, sizeof(buf)+buf-p, " STA next dialog_token is %d \n " 164 "TIDs info is: \n TID :", 165 (sta->ampdu_mlme.dialog_token_allocator + 1)); 166 for (i = 0; i < STA_TID_NUM; i++) 167 p += scnprintf(p, sizeof(buf)+buf-p, "%5d", i); 168 169 p += scnprintf(p, sizeof(buf)+buf-p, "\n RX :"); 170 for (i = 0; i < STA_TID_NUM; i++) 171 p += scnprintf(p, sizeof(buf)+buf-p, "%5d", 172 sta->ampdu_mlme.tid_state_rx[i]); 173 174 p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:"); 175 for (i = 0; i < STA_TID_NUM; i++) 176 p += scnprintf(p, sizeof(buf)+buf-p, "%5d", 177 sta->ampdu_mlme.tid_state_rx[i]? 178 sta->ampdu_mlme.tid_rx[i]->dialog_token : 0); 179 180 p += scnprintf(p, sizeof(buf)+buf-p, "\n TX :"); 181 for (i = 0; i < STA_TID_NUM; i++) 182 p += scnprintf(p, sizeof(buf)+buf-p, "%5d", 183 sta->ampdu_mlme.tid_state_tx[i]); 184 185 p += scnprintf(p, sizeof(buf)+buf-p, "\n DTKN:"); 186 for (i = 0; i < STA_TID_NUM; i++) 187 p += scnprintf(p, sizeof(buf)+buf-p, "%5d", 188 sta->ampdu_mlme.tid_state_tx[i]? 189 sta->ampdu_mlme.tid_tx[i]->dialog_token : 0); 190 191 p += scnprintf(p, sizeof(buf)+buf-p, "\n SSN :"); 192 for (i = 0; i < STA_TID_NUM; i++) 193 p += scnprintf(p, sizeof(buf)+buf-p, "%5d", 194 sta->ampdu_mlme.tid_state_tx[i]? 195 sta->ampdu_mlme.tid_tx[i]->ssn : 0); 196 197 p += scnprintf(p, sizeof(buf)+buf-p, "\n"); 198 199 return simple_read_from_buffer(userbuf, count, ppos, buf, p - buf); 200 } 201 202 static ssize_t sta_agg_status_write(struct file *file, 203 const char __user *user_buf, size_t count, loff_t *ppos) 204 { 205 struct sta_info *sta = file->private_data; 206 struct net_device *dev = sta->sdata->dev; 207 struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr); 208 struct ieee80211_hw *hw = &local->hw; 209 u8 *da = sta->addr; 210 static int tid_static_tx[16] = {0, 0, 0, 0, 0, 0, 0, 0, 211 0, 0, 0, 0, 0, 0, 0, 0}; 212 static int tid_static_rx[16] = {1, 1, 1, 1, 1, 1, 1, 1, 213 1, 1, 1, 1, 1, 1, 1, 1}; 214 char *endp; 215 char buf[32]; 216 int buf_size, rs; 217 unsigned int tid_num; 218 char state[4]; 219 220 memset(buf, 0x00, sizeof(buf)); 221 buf_size = min(count, (sizeof(buf)-1)); 222 if (copy_from_user(buf, user_buf, buf_size)) 223 return -EFAULT; 224 225 tid_num = simple_strtoul(buf, &endp, 0); 226 if (endp == buf) 227 return -EINVAL; 228 229 if ((tid_num >= 100) && (tid_num <= 115)) { 230 /* toggle Rx aggregation command */ 231 tid_num = tid_num - 100; 232 if (tid_static_rx[tid_num] == 1) { 233 strcpy(state, "off "); 234 ieee80211_sta_stop_rx_ba_session(dev, da, tid_num, 0, 235 WLAN_REASON_QSTA_REQUIRE_SETUP); 236 sta->ampdu_mlme.tid_state_rx[tid_num] |= 237 HT_AGG_STATE_DEBUGFS_CTL; 238 tid_static_rx[tid_num] = 0; 239 } else { 240 strcpy(state, "on "); 241 sta->ampdu_mlme.tid_state_rx[tid_num] &= 242 ~HT_AGG_STATE_DEBUGFS_CTL; 243 tid_static_rx[tid_num] = 1; 244 } 245 printk(KERN_DEBUG "debugfs - try switching tid %u %s\n", 246 tid_num, state); 247 } else if ((tid_num >= 0) && (tid_num <= 15)) { 248 /* toggle Tx aggregation command */ 249 if (tid_static_tx[tid_num] == 0) { 250 strcpy(state, "on "); 251 rs = ieee80211_start_tx_ba_session(hw, da, tid_num); 252 if (rs == 0) 253 tid_static_tx[tid_num] = 1; 254 } else { 255 strcpy(state, "off"); 256 rs = ieee80211_stop_tx_ba_session(hw, da, tid_num, 1); 257 if (rs == 0) 258 tid_static_tx[tid_num] = 0; 259 } 260 printk(KERN_DEBUG "debugfs - switching tid %u %s, return=%d\n", 261 tid_num, state, rs); 262 } 263 264 return count; 265 } 266 STA_OPS_WR(agg_status); 267 268 #define DEBUGFS_ADD(name) \ 269 sta->debugfs.name = debugfs_create_file(#name, 0400, \ 270 sta->debugfs.dir, sta, &sta_ ##name## _ops); 271 272 #define DEBUGFS_DEL(name) \ 273 debugfs_remove(sta->debugfs.name);\ 274 sta->debugfs.name = NULL; 275 276 277 void ieee80211_sta_debugfs_add(struct sta_info *sta) 278 { 279 struct dentry *stations_dir = sta->local->debugfs.stations; 280 DECLARE_MAC_BUF(mbuf); 281 u8 *mac; 282 283 if (!stations_dir) 284 return; 285 286 mac = print_mac(mbuf, sta->addr); 287 288 sta->debugfs.dir = debugfs_create_dir(mac, stations_dir); 289 if (!sta->debugfs.dir) 290 return; 291 292 DEBUGFS_ADD(flags); 293 DEBUGFS_ADD(num_ps_buf_frames); 294 DEBUGFS_ADD(inactive_ms); 295 DEBUGFS_ADD(last_seq_ctrl); 296 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 297 DEBUGFS_ADD(wme_rx_queue); 298 DEBUGFS_ADD(wme_tx_queue); 299 #endif 300 DEBUGFS_ADD(agg_status); 301 } 302 303 void ieee80211_sta_debugfs_remove(struct sta_info *sta) 304 { 305 DEBUGFS_DEL(flags); 306 DEBUGFS_DEL(num_ps_buf_frames); 307 DEBUGFS_DEL(inactive_ms); 308 DEBUGFS_DEL(last_seq_ctrl); 309 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 310 DEBUGFS_DEL(wme_rx_queue); 311 DEBUGFS_DEL(wme_tx_queue); 312 #endif 313 DEBUGFS_DEL(agg_status); 314 315 debugfs_remove(sta->debugfs.dir); 316 sta->debugfs.dir = NULL; 317 } 318