1 /* 2 * mac80211 debugfs for wireless PHYs 3 * 4 * Copyright 2007 Johannes Berg <johannes@sipsolutions.net> 5 * 6 * GPLv2 7 * 8 */ 9 10 #include <linux/debugfs.h> 11 #include <linux/rtnetlink.h> 12 #include "ieee80211_i.h" 13 #include "ieee80211_rate.h" 14 #include "debugfs.h" 15 16 int mac80211_open_file_generic(struct inode *inode, struct file *file) 17 { 18 file->private_data = inode->i_private; 19 return 0; 20 } 21 22 static const char *ieee80211_mode_str(int mode) 23 { 24 switch (mode) { 25 case MODE_IEEE80211A: 26 return "IEEE 802.11a"; 27 case MODE_IEEE80211B: 28 return "IEEE 802.11b"; 29 case MODE_IEEE80211G: 30 return "IEEE 802.11g"; 31 case MODE_ATHEROS_TURBO: 32 return "Atheros Turbo (5 GHz)"; 33 default: 34 return "UNKNOWN"; 35 } 36 } 37 38 static ssize_t modes_read(struct file *file, char __user *userbuf, 39 size_t count, loff_t *ppos) 40 { 41 struct ieee80211_local *local = file->private_data; 42 struct ieee80211_hw_mode *mode; 43 char buf[150], *p = buf; 44 45 /* FIXME: locking! */ 46 list_for_each_entry(mode, &local->modes_list, list) { 47 p += scnprintf(p, sizeof(buf)+buf-p, 48 "%s\n", ieee80211_mode_str(mode->mode)); 49 } 50 51 return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf); 52 } 53 54 static const struct file_operations modes_ops = { 55 .read = modes_read, 56 .open = mac80211_open_file_generic, 57 }; 58 59 #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \ 60 static ssize_t name## _read(struct file *file, char __user *userbuf, \ 61 size_t count, loff_t *ppos) \ 62 { \ 63 struct ieee80211_local *local = file->private_data; \ 64 char buf[buflen]; \ 65 int res; \ 66 \ 67 res = scnprintf(buf, buflen, fmt "\n", ##value); \ 68 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \ 69 } \ 70 \ 71 static const struct file_operations name## _ops = { \ 72 .read = name## _read, \ 73 .open = mac80211_open_file_generic, \ 74 }; 75 76 #define DEBUGFS_ADD(name) \ 77 local->debugfs.name = debugfs_create_file(#name, 0444, phyd, \ 78 local, &name## _ops); 79 80 #define DEBUGFS_DEL(name) \ 81 debugfs_remove(local->debugfs.name); \ 82 local->debugfs.name = NULL; 83 84 85 DEBUGFS_READONLY_FILE(channel, 20, "%d", 86 local->hw.conf.channel); 87 DEBUGFS_READONLY_FILE(frequency, 20, "%d", 88 local->hw.conf.freq); 89 DEBUGFS_READONLY_FILE(radar_detect, 20, "%d", 90 local->hw.conf.radar_detect); 91 DEBUGFS_READONLY_FILE(antenna_sel_tx, 20, "%d", 92 local->hw.conf.antenna_sel_tx); 93 DEBUGFS_READONLY_FILE(antenna_sel_rx, 20, "%d", 94 local->hw.conf.antenna_sel_rx); 95 DEBUGFS_READONLY_FILE(bridge_packets, 20, "%d", 96 local->bridge_packets); 97 DEBUGFS_READONLY_FILE(key_tx_rx_threshold, 20, "%d", 98 local->key_tx_rx_threshold); 99 DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d", 100 local->rts_threshold); 101 DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d", 102 local->fragmentation_threshold); 103 DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d", 104 local->short_retry_limit); 105 DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d", 106 local->long_retry_limit); 107 DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d", 108 local->total_ps_buffered); 109 DEBUGFS_READONLY_FILE(mode, 20, "%s", 110 ieee80211_mode_str(local->hw.conf.phymode)); 111 DEBUGFS_READONLY_FILE(wep_iv, 20, "%#06x", 112 local->wep_iv & 0xffffff); 113 DEBUGFS_READONLY_FILE(tx_power_reduction, 20, "%d.%d dBm", 114 local->hw.conf.tx_power_reduction / 10, 115 local->hw.conf.tx_power_reduction % 10); 116 DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s", 117 local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>"); 118 119 /* statistics stuff */ 120 121 static inline int rtnl_lock_local(struct ieee80211_local *local) 122 { 123 rtnl_lock(); 124 if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) { 125 rtnl_unlock(); 126 return -ENODEV; 127 } 128 return 0; 129 } 130 131 #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \ 132 DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value) 133 134 static ssize_t format_devstat_counter(struct ieee80211_local *local, 135 char __user *userbuf, 136 size_t count, loff_t *ppos, 137 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, 138 int buflen)) 139 { 140 struct ieee80211_low_level_stats stats; 141 char buf[20]; 142 int res; 143 144 if (!local->ops->get_stats) 145 return -EOPNOTSUPP; 146 147 res = rtnl_lock_local(local); 148 if (res) 149 return res; 150 151 res = local->ops->get_stats(local_to_hw(local), &stats); 152 rtnl_unlock(); 153 if (!res) 154 res = printvalue(&stats, buf, sizeof(buf)); 155 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 156 } 157 158 #define DEBUGFS_DEVSTATS_FILE(name) \ 159 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ 160 char *buf, int buflen) \ 161 { \ 162 return scnprintf(buf, buflen, "%u\n", stats->name); \ 163 } \ 164 static ssize_t stats_ ##name## _read(struct file *file, \ 165 char __user *userbuf, \ 166 size_t count, loff_t *ppos) \ 167 { \ 168 return format_devstat_counter(file->private_data, \ 169 userbuf, \ 170 count, \ 171 ppos, \ 172 print_devstats_##name); \ 173 } \ 174 \ 175 static const struct file_operations stats_ ##name## _ops = { \ 176 .read = stats_ ##name## _read, \ 177 .open = mac80211_open_file_generic, \ 178 }; 179 180 #define DEBUGFS_STATS_ADD(name) \ 181 local->debugfs.stats.name = debugfs_create_file(#name, 0444, statsd,\ 182 local, &stats_ ##name## _ops); 183 184 #define DEBUGFS_STATS_DEL(name) \ 185 debugfs_remove(local->debugfs.stats.name); \ 186 local->debugfs.stats.name = NULL; 187 188 DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u", 189 local->dot11TransmittedFragmentCount); 190 DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u", 191 local->dot11MulticastTransmittedFrameCount); 192 DEBUGFS_STATS_FILE(failed_count, 20, "%u", 193 local->dot11FailedCount); 194 DEBUGFS_STATS_FILE(retry_count, 20, "%u", 195 local->dot11RetryCount); 196 DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u", 197 local->dot11MultipleRetryCount); 198 DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u", 199 local->dot11FrameDuplicateCount); 200 DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u", 201 local->dot11ReceivedFragmentCount); 202 DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u", 203 local->dot11MulticastReceivedFrameCount); 204 DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u", 205 local->dot11TransmittedFrameCount); 206 DEBUGFS_STATS_FILE(wep_undecryptable_count, 20, "%u", 207 local->dot11WEPUndecryptableCount); 208 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 209 DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u", 210 local->tx_handlers_drop); 211 DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u", 212 local->tx_handlers_queued); 213 DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u", 214 local->tx_handlers_drop_unencrypted); 215 DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u", 216 local->tx_handlers_drop_fragment); 217 DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u", 218 local->tx_handlers_drop_wep); 219 DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u", 220 local->tx_handlers_drop_not_assoc); 221 DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u", 222 local->tx_handlers_drop_unauth_port); 223 DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u", 224 local->rx_handlers_drop); 225 DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u", 226 local->rx_handlers_queued); 227 DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u", 228 local->rx_handlers_drop_nullfunc); 229 DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u", 230 local->rx_handlers_drop_defrag); 231 DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u", 232 local->rx_handlers_drop_short); 233 DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u", 234 local->rx_handlers_drop_passive_scan); 235 DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u", 236 local->tx_expand_skb_head); 237 DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u", 238 local->tx_expand_skb_head_cloned); 239 DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u", 240 local->rx_expand_skb_head); 241 DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u", 242 local->rx_expand_skb_head2); 243 DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u", 244 local->rx_handlers_fragments); 245 DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u", 246 local->tx_status_drop); 247 248 static ssize_t stats_wme_rx_queue_read(struct file *file, 249 char __user *userbuf, 250 size_t count, loff_t *ppos) 251 { 252 struct ieee80211_local *local = file->private_data; 253 char buf[NUM_RX_DATA_QUEUES*15], *p = buf; 254 int i; 255 256 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) 257 p += scnprintf(p, sizeof(buf)+buf-p, 258 "%u\n", local->wme_rx_queue[i]); 259 260 return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf); 261 } 262 263 static const struct file_operations stats_wme_rx_queue_ops = { 264 .read = stats_wme_rx_queue_read, 265 .open = mac80211_open_file_generic, 266 }; 267 268 static ssize_t stats_wme_tx_queue_read(struct file *file, 269 char __user *userbuf, 270 size_t count, loff_t *ppos) 271 { 272 struct ieee80211_local *local = file->private_data; 273 char buf[NUM_TX_DATA_QUEUES*15], *p = buf; 274 int i; 275 276 for (i = 0; i < NUM_TX_DATA_QUEUES; i++) 277 p += scnprintf(p, sizeof(buf)+buf-p, 278 "%u\n", local->wme_tx_queue[i]); 279 280 return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf); 281 } 282 283 static const struct file_operations stats_wme_tx_queue_ops = { 284 .read = stats_wme_tx_queue_read, 285 .open = mac80211_open_file_generic, 286 }; 287 #endif 288 289 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); 290 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); 291 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); 292 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); 293 294 295 void debugfs_hw_add(struct ieee80211_local *local) 296 { 297 struct dentry *phyd = local->hw.wiphy->debugfsdir; 298 struct dentry *statsd; 299 300 if (!phyd) 301 return; 302 303 local->debugfs.stations = debugfs_create_dir("stations", phyd); 304 local->debugfs.keys = debugfs_create_dir("keys", phyd); 305 306 DEBUGFS_ADD(channel); 307 DEBUGFS_ADD(frequency); 308 DEBUGFS_ADD(radar_detect); 309 DEBUGFS_ADD(antenna_sel_tx); 310 DEBUGFS_ADD(antenna_sel_rx); 311 DEBUGFS_ADD(bridge_packets); 312 DEBUGFS_ADD(key_tx_rx_threshold); 313 DEBUGFS_ADD(rts_threshold); 314 DEBUGFS_ADD(fragmentation_threshold); 315 DEBUGFS_ADD(short_retry_limit); 316 DEBUGFS_ADD(long_retry_limit); 317 DEBUGFS_ADD(total_ps_buffered); 318 DEBUGFS_ADD(mode); 319 DEBUGFS_ADD(wep_iv); 320 DEBUGFS_ADD(tx_power_reduction); 321 DEBUGFS_ADD(modes); 322 323 statsd = debugfs_create_dir("statistics", phyd); 324 local->debugfs.statistics = statsd; 325 326 /* if the dir failed, don't put all the other things into the root! */ 327 if (!statsd) 328 return; 329 330 DEBUGFS_STATS_ADD(transmitted_fragment_count); 331 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count); 332 DEBUGFS_STATS_ADD(failed_count); 333 DEBUGFS_STATS_ADD(retry_count); 334 DEBUGFS_STATS_ADD(multiple_retry_count); 335 DEBUGFS_STATS_ADD(frame_duplicate_count); 336 DEBUGFS_STATS_ADD(received_fragment_count); 337 DEBUGFS_STATS_ADD(multicast_received_frame_count); 338 DEBUGFS_STATS_ADD(transmitted_frame_count); 339 DEBUGFS_STATS_ADD(wep_undecryptable_count); 340 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 341 DEBUGFS_STATS_ADD(tx_handlers_drop); 342 DEBUGFS_STATS_ADD(tx_handlers_queued); 343 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted); 344 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment); 345 DEBUGFS_STATS_ADD(tx_handlers_drop_wep); 346 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc); 347 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port); 348 DEBUGFS_STATS_ADD(rx_handlers_drop); 349 DEBUGFS_STATS_ADD(rx_handlers_queued); 350 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc); 351 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag); 352 DEBUGFS_STATS_ADD(rx_handlers_drop_short); 353 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan); 354 DEBUGFS_STATS_ADD(tx_expand_skb_head); 355 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned); 356 DEBUGFS_STATS_ADD(rx_expand_skb_head); 357 DEBUGFS_STATS_ADD(rx_expand_skb_head2); 358 DEBUGFS_STATS_ADD(rx_handlers_fragments); 359 DEBUGFS_STATS_ADD(tx_status_drop); 360 DEBUGFS_STATS_ADD(wme_tx_queue); 361 DEBUGFS_STATS_ADD(wme_rx_queue); 362 #endif 363 DEBUGFS_STATS_ADD(dot11ACKFailureCount); 364 DEBUGFS_STATS_ADD(dot11RTSFailureCount); 365 DEBUGFS_STATS_ADD(dot11FCSErrorCount); 366 DEBUGFS_STATS_ADD(dot11RTSSuccessCount); 367 } 368 369 void debugfs_hw_del(struct ieee80211_local *local) 370 { 371 DEBUGFS_DEL(channel); 372 DEBUGFS_DEL(frequency); 373 DEBUGFS_DEL(radar_detect); 374 DEBUGFS_DEL(antenna_sel_tx); 375 DEBUGFS_DEL(antenna_sel_rx); 376 DEBUGFS_DEL(bridge_packets); 377 DEBUGFS_DEL(key_tx_rx_threshold); 378 DEBUGFS_DEL(rts_threshold); 379 DEBUGFS_DEL(fragmentation_threshold); 380 DEBUGFS_DEL(short_retry_limit); 381 DEBUGFS_DEL(long_retry_limit); 382 DEBUGFS_DEL(total_ps_buffered); 383 DEBUGFS_DEL(mode); 384 DEBUGFS_DEL(wep_iv); 385 DEBUGFS_DEL(tx_power_reduction); 386 DEBUGFS_DEL(modes); 387 388 DEBUGFS_STATS_DEL(transmitted_fragment_count); 389 DEBUGFS_STATS_DEL(multicast_transmitted_frame_count); 390 DEBUGFS_STATS_DEL(failed_count); 391 DEBUGFS_STATS_DEL(retry_count); 392 DEBUGFS_STATS_DEL(multiple_retry_count); 393 DEBUGFS_STATS_DEL(frame_duplicate_count); 394 DEBUGFS_STATS_DEL(received_fragment_count); 395 DEBUGFS_STATS_DEL(multicast_received_frame_count); 396 DEBUGFS_STATS_DEL(transmitted_frame_count); 397 DEBUGFS_STATS_DEL(wep_undecryptable_count); 398 DEBUGFS_STATS_DEL(num_scans); 399 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 400 DEBUGFS_STATS_DEL(tx_handlers_drop); 401 DEBUGFS_STATS_DEL(tx_handlers_queued); 402 DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted); 403 DEBUGFS_STATS_DEL(tx_handlers_drop_fragment); 404 DEBUGFS_STATS_DEL(tx_handlers_drop_wep); 405 DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc); 406 DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port); 407 DEBUGFS_STATS_DEL(rx_handlers_drop); 408 DEBUGFS_STATS_DEL(rx_handlers_queued); 409 DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc); 410 DEBUGFS_STATS_DEL(rx_handlers_drop_defrag); 411 DEBUGFS_STATS_DEL(rx_handlers_drop_short); 412 DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan); 413 DEBUGFS_STATS_DEL(tx_expand_skb_head); 414 DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned); 415 DEBUGFS_STATS_DEL(rx_expand_skb_head); 416 DEBUGFS_STATS_DEL(rx_expand_skb_head2); 417 DEBUGFS_STATS_DEL(rx_handlers_fragments); 418 DEBUGFS_STATS_DEL(tx_status_drop); 419 DEBUGFS_STATS_DEL(wme_tx_queue); 420 DEBUGFS_STATS_DEL(wme_rx_queue); 421 #endif 422 DEBUGFS_STATS_DEL(dot11ACKFailureCount); 423 DEBUGFS_STATS_DEL(dot11RTSFailureCount); 424 DEBUGFS_STATS_DEL(dot11FCSErrorCount); 425 DEBUGFS_STATS_DEL(dot11RTSSuccessCount); 426 427 debugfs_remove(local->debugfs.statistics); 428 local->debugfs.statistics = NULL; 429 debugfs_remove(local->debugfs.stations); 430 local->debugfs.stations = NULL; 431 debugfs_remove(local->debugfs.keys); 432 local->debugfs.keys = NULL; 433 } 434