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