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 "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 #define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...) \ 23 static ssize_t name## _read(struct file *file, char __user *userbuf, \ 24 size_t count, loff_t *ppos) \ 25 { \ 26 struct ieee80211_local *local = file->private_data; \ 27 char buf[buflen]; \ 28 int res; \ 29 \ 30 res = scnprintf(buf, buflen, fmt "\n", ##value); \ 31 return simple_read_from_buffer(userbuf, count, ppos, buf, res); \ 32 } \ 33 \ 34 static const struct file_operations name## _ops = { \ 35 .read = name## _read, \ 36 .open = mac80211_open_file_generic, \ 37 }; 38 39 #define DEBUGFS_ADD(name) \ 40 local->debugfs.name = debugfs_create_file(#name, 0400, phyd, \ 41 local, &name## _ops); 42 43 #define DEBUGFS_DEL(name) \ 44 debugfs_remove(local->debugfs.name); \ 45 local->debugfs.name = NULL; 46 47 48 DEBUGFS_READONLY_FILE(frequency, 20, "%d", 49 local->hw.conf.channel->center_freq); 50 DEBUGFS_READONLY_FILE(antenna_sel_tx, 20, "%d", 51 local->hw.conf.antenna_sel_tx); 52 DEBUGFS_READONLY_FILE(antenna_sel_rx, 20, "%d", 53 local->hw.conf.antenna_sel_rx); 54 DEBUGFS_READONLY_FILE(bridge_packets, 20, "%d", 55 local->bridge_packets); 56 DEBUGFS_READONLY_FILE(rts_threshold, 20, "%d", 57 local->rts_threshold); 58 DEBUGFS_READONLY_FILE(fragmentation_threshold, 20, "%d", 59 local->fragmentation_threshold); 60 DEBUGFS_READONLY_FILE(short_retry_limit, 20, "%d", 61 local->short_retry_limit); 62 DEBUGFS_READONLY_FILE(long_retry_limit, 20, "%d", 63 local->long_retry_limit); 64 DEBUGFS_READONLY_FILE(total_ps_buffered, 20, "%d", 65 local->total_ps_buffered); 66 DEBUGFS_READONLY_FILE(wep_iv, 20, "%#06x", 67 local->wep_iv & 0xffffff); 68 DEBUGFS_READONLY_FILE(rate_ctrl_alg, 100, "%s", 69 local->rate_ctrl ? local->rate_ctrl->ops->name : "<unset>"); 70 71 /* statistics stuff */ 72 73 static inline int rtnl_lock_local(struct ieee80211_local *local) 74 { 75 rtnl_lock(); 76 if (unlikely(local->reg_state != IEEE80211_DEV_REGISTERED)) { 77 rtnl_unlock(); 78 return -ENODEV; 79 } 80 return 0; 81 } 82 83 #define DEBUGFS_STATS_FILE(name, buflen, fmt, value...) \ 84 DEBUGFS_READONLY_FILE(stats_ ##name, buflen, fmt, ##value) 85 86 static ssize_t format_devstat_counter(struct ieee80211_local *local, 87 char __user *userbuf, 88 size_t count, loff_t *ppos, 89 int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf, 90 int buflen)) 91 { 92 struct ieee80211_low_level_stats stats; 93 char buf[20]; 94 int res; 95 96 if (!local->ops->get_stats) 97 return -EOPNOTSUPP; 98 99 res = rtnl_lock_local(local); 100 if (res) 101 return res; 102 103 res = local->ops->get_stats(local_to_hw(local), &stats); 104 rtnl_unlock(); 105 if (!res) 106 res = printvalue(&stats, buf, sizeof(buf)); 107 return simple_read_from_buffer(userbuf, count, ppos, buf, res); 108 } 109 110 #define DEBUGFS_DEVSTATS_FILE(name) \ 111 static int print_devstats_##name(struct ieee80211_low_level_stats *stats,\ 112 char *buf, int buflen) \ 113 { \ 114 return scnprintf(buf, buflen, "%u\n", stats->name); \ 115 } \ 116 static ssize_t stats_ ##name## _read(struct file *file, \ 117 char __user *userbuf, \ 118 size_t count, loff_t *ppos) \ 119 { \ 120 return format_devstat_counter(file->private_data, \ 121 userbuf, \ 122 count, \ 123 ppos, \ 124 print_devstats_##name); \ 125 } \ 126 \ 127 static const struct file_operations stats_ ##name## _ops = { \ 128 .read = stats_ ##name## _read, \ 129 .open = mac80211_open_file_generic, \ 130 }; 131 132 #define DEBUGFS_STATS_ADD(name) \ 133 local->debugfs.stats.name = debugfs_create_file(#name, 0400, statsd,\ 134 local, &stats_ ##name## _ops); 135 136 #define DEBUGFS_STATS_DEL(name) \ 137 debugfs_remove(local->debugfs.stats.name); \ 138 local->debugfs.stats.name = NULL; 139 140 DEBUGFS_STATS_FILE(transmitted_fragment_count, 20, "%u", 141 local->dot11TransmittedFragmentCount); 142 DEBUGFS_STATS_FILE(multicast_transmitted_frame_count, 20, "%u", 143 local->dot11MulticastTransmittedFrameCount); 144 DEBUGFS_STATS_FILE(failed_count, 20, "%u", 145 local->dot11FailedCount); 146 DEBUGFS_STATS_FILE(retry_count, 20, "%u", 147 local->dot11RetryCount); 148 DEBUGFS_STATS_FILE(multiple_retry_count, 20, "%u", 149 local->dot11MultipleRetryCount); 150 DEBUGFS_STATS_FILE(frame_duplicate_count, 20, "%u", 151 local->dot11FrameDuplicateCount); 152 DEBUGFS_STATS_FILE(received_fragment_count, 20, "%u", 153 local->dot11ReceivedFragmentCount); 154 DEBUGFS_STATS_FILE(multicast_received_frame_count, 20, "%u", 155 local->dot11MulticastReceivedFrameCount); 156 DEBUGFS_STATS_FILE(transmitted_frame_count, 20, "%u", 157 local->dot11TransmittedFrameCount); 158 DEBUGFS_STATS_FILE(wep_undecryptable_count, 20, "%u", 159 local->dot11WEPUndecryptableCount); 160 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 161 DEBUGFS_STATS_FILE(tx_handlers_drop, 20, "%u", 162 local->tx_handlers_drop); 163 DEBUGFS_STATS_FILE(tx_handlers_queued, 20, "%u", 164 local->tx_handlers_queued); 165 DEBUGFS_STATS_FILE(tx_handlers_drop_unencrypted, 20, "%u", 166 local->tx_handlers_drop_unencrypted); 167 DEBUGFS_STATS_FILE(tx_handlers_drop_fragment, 20, "%u", 168 local->tx_handlers_drop_fragment); 169 DEBUGFS_STATS_FILE(tx_handlers_drop_wep, 20, "%u", 170 local->tx_handlers_drop_wep); 171 DEBUGFS_STATS_FILE(tx_handlers_drop_not_assoc, 20, "%u", 172 local->tx_handlers_drop_not_assoc); 173 DEBUGFS_STATS_FILE(tx_handlers_drop_unauth_port, 20, "%u", 174 local->tx_handlers_drop_unauth_port); 175 DEBUGFS_STATS_FILE(rx_handlers_drop, 20, "%u", 176 local->rx_handlers_drop); 177 DEBUGFS_STATS_FILE(rx_handlers_queued, 20, "%u", 178 local->rx_handlers_queued); 179 DEBUGFS_STATS_FILE(rx_handlers_drop_nullfunc, 20, "%u", 180 local->rx_handlers_drop_nullfunc); 181 DEBUGFS_STATS_FILE(rx_handlers_drop_defrag, 20, "%u", 182 local->rx_handlers_drop_defrag); 183 DEBUGFS_STATS_FILE(rx_handlers_drop_short, 20, "%u", 184 local->rx_handlers_drop_short); 185 DEBUGFS_STATS_FILE(rx_handlers_drop_passive_scan, 20, "%u", 186 local->rx_handlers_drop_passive_scan); 187 DEBUGFS_STATS_FILE(tx_expand_skb_head, 20, "%u", 188 local->tx_expand_skb_head); 189 DEBUGFS_STATS_FILE(tx_expand_skb_head_cloned, 20, "%u", 190 local->tx_expand_skb_head_cloned); 191 DEBUGFS_STATS_FILE(rx_expand_skb_head, 20, "%u", 192 local->rx_expand_skb_head); 193 DEBUGFS_STATS_FILE(rx_expand_skb_head2, 20, "%u", 194 local->rx_expand_skb_head2); 195 DEBUGFS_STATS_FILE(rx_handlers_fragments, 20, "%u", 196 local->rx_handlers_fragments); 197 DEBUGFS_STATS_FILE(tx_status_drop, 20, "%u", 198 local->tx_status_drop); 199 200 static ssize_t stats_wme_rx_queue_read(struct file *file, 201 char __user *userbuf, 202 size_t count, loff_t *ppos) 203 { 204 struct ieee80211_local *local = file->private_data; 205 char buf[NUM_RX_DATA_QUEUES*15], *p = buf; 206 int i; 207 208 for (i = 0; i < NUM_RX_DATA_QUEUES; i++) 209 p += scnprintf(p, sizeof(buf)+buf-p, 210 "%u\n", local->wme_rx_queue[i]); 211 212 return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf); 213 } 214 215 static const struct file_operations stats_wme_rx_queue_ops = { 216 .read = stats_wme_rx_queue_read, 217 .open = mac80211_open_file_generic, 218 }; 219 220 static ssize_t stats_wme_tx_queue_read(struct file *file, 221 char __user *userbuf, 222 size_t count, loff_t *ppos) 223 { 224 struct ieee80211_local *local = file->private_data; 225 char buf[NUM_TX_DATA_QUEUES*15], *p = buf; 226 int i; 227 228 for (i = 0; i < NUM_TX_DATA_QUEUES; i++) 229 p += scnprintf(p, sizeof(buf)+buf-p, 230 "%u\n", local->wme_tx_queue[i]); 231 232 return simple_read_from_buffer(userbuf, count, ppos, buf, p-buf); 233 } 234 235 static const struct file_operations stats_wme_tx_queue_ops = { 236 .read = stats_wme_tx_queue_read, 237 .open = mac80211_open_file_generic, 238 }; 239 #endif 240 241 DEBUGFS_DEVSTATS_FILE(dot11ACKFailureCount); 242 DEBUGFS_DEVSTATS_FILE(dot11RTSFailureCount); 243 DEBUGFS_DEVSTATS_FILE(dot11FCSErrorCount); 244 DEBUGFS_DEVSTATS_FILE(dot11RTSSuccessCount); 245 246 247 void debugfs_hw_add(struct ieee80211_local *local) 248 { 249 struct dentry *phyd = local->hw.wiphy->debugfsdir; 250 struct dentry *statsd; 251 252 if (!phyd) 253 return; 254 255 local->debugfs.stations = debugfs_create_dir("stations", phyd); 256 local->debugfs.keys = debugfs_create_dir("keys", phyd); 257 258 DEBUGFS_ADD(frequency); 259 DEBUGFS_ADD(antenna_sel_tx); 260 DEBUGFS_ADD(antenna_sel_rx); 261 DEBUGFS_ADD(bridge_packets); 262 DEBUGFS_ADD(rts_threshold); 263 DEBUGFS_ADD(fragmentation_threshold); 264 DEBUGFS_ADD(short_retry_limit); 265 DEBUGFS_ADD(long_retry_limit); 266 DEBUGFS_ADD(total_ps_buffered); 267 DEBUGFS_ADD(wep_iv); 268 269 statsd = debugfs_create_dir("statistics", phyd); 270 local->debugfs.statistics = statsd; 271 272 /* if the dir failed, don't put all the other things into the root! */ 273 if (!statsd) 274 return; 275 276 DEBUGFS_STATS_ADD(transmitted_fragment_count); 277 DEBUGFS_STATS_ADD(multicast_transmitted_frame_count); 278 DEBUGFS_STATS_ADD(failed_count); 279 DEBUGFS_STATS_ADD(retry_count); 280 DEBUGFS_STATS_ADD(multiple_retry_count); 281 DEBUGFS_STATS_ADD(frame_duplicate_count); 282 DEBUGFS_STATS_ADD(received_fragment_count); 283 DEBUGFS_STATS_ADD(multicast_received_frame_count); 284 DEBUGFS_STATS_ADD(transmitted_frame_count); 285 DEBUGFS_STATS_ADD(wep_undecryptable_count); 286 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 287 DEBUGFS_STATS_ADD(tx_handlers_drop); 288 DEBUGFS_STATS_ADD(tx_handlers_queued); 289 DEBUGFS_STATS_ADD(tx_handlers_drop_unencrypted); 290 DEBUGFS_STATS_ADD(tx_handlers_drop_fragment); 291 DEBUGFS_STATS_ADD(tx_handlers_drop_wep); 292 DEBUGFS_STATS_ADD(tx_handlers_drop_not_assoc); 293 DEBUGFS_STATS_ADD(tx_handlers_drop_unauth_port); 294 DEBUGFS_STATS_ADD(rx_handlers_drop); 295 DEBUGFS_STATS_ADD(rx_handlers_queued); 296 DEBUGFS_STATS_ADD(rx_handlers_drop_nullfunc); 297 DEBUGFS_STATS_ADD(rx_handlers_drop_defrag); 298 DEBUGFS_STATS_ADD(rx_handlers_drop_short); 299 DEBUGFS_STATS_ADD(rx_handlers_drop_passive_scan); 300 DEBUGFS_STATS_ADD(tx_expand_skb_head); 301 DEBUGFS_STATS_ADD(tx_expand_skb_head_cloned); 302 DEBUGFS_STATS_ADD(rx_expand_skb_head); 303 DEBUGFS_STATS_ADD(rx_expand_skb_head2); 304 DEBUGFS_STATS_ADD(rx_handlers_fragments); 305 DEBUGFS_STATS_ADD(tx_status_drop); 306 DEBUGFS_STATS_ADD(wme_tx_queue); 307 DEBUGFS_STATS_ADD(wme_rx_queue); 308 #endif 309 DEBUGFS_STATS_ADD(dot11ACKFailureCount); 310 DEBUGFS_STATS_ADD(dot11RTSFailureCount); 311 DEBUGFS_STATS_ADD(dot11FCSErrorCount); 312 DEBUGFS_STATS_ADD(dot11RTSSuccessCount); 313 } 314 315 void debugfs_hw_del(struct ieee80211_local *local) 316 { 317 DEBUGFS_DEL(frequency); 318 DEBUGFS_DEL(antenna_sel_tx); 319 DEBUGFS_DEL(antenna_sel_rx); 320 DEBUGFS_DEL(bridge_packets); 321 DEBUGFS_DEL(rts_threshold); 322 DEBUGFS_DEL(fragmentation_threshold); 323 DEBUGFS_DEL(short_retry_limit); 324 DEBUGFS_DEL(long_retry_limit); 325 DEBUGFS_DEL(total_ps_buffered); 326 DEBUGFS_DEL(wep_iv); 327 328 DEBUGFS_STATS_DEL(transmitted_fragment_count); 329 DEBUGFS_STATS_DEL(multicast_transmitted_frame_count); 330 DEBUGFS_STATS_DEL(failed_count); 331 DEBUGFS_STATS_DEL(retry_count); 332 DEBUGFS_STATS_DEL(multiple_retry_count); 333 DEBUGFS_STATS_DEL(frame_duplicate_count); 334 DEBUGFS_STATS_DEL(received_fragment_count); 335 DEBUGFS_STATS_DEL(multicast_received_frame_count); 336 DEBUGFS_STATS_DEL(transmitted_frame_count); 337 DEBUGFS_STATS_DEL(wep_undecryptable_count); 338 DEBUGFS_STATS_DEL(num_scans); 339 #ifdef CONFIG_MAC80211_DEBUG_COUNTERS 340 DEBUGFS_STATS_DEL(tx_handlers_drop); 341 DEBUGFS_STATS_DEL(tx_handlers_queued); 342 DEBUGFS_STATS_DEL(tx_handlers_drop_unencrypted); 343 DEBUGFS_STATS_DEL(tx_handlers_drop_fragment); 344 DEBUGFS_STATS_DEL(tx_handlers_drop_wep); 345 DEBUGFS_STATS_DEL(tx_handlers_drop_not_assoc); 346 DEBUGFS_STATS_DEL(tx_handlers_drop_unauth_port); 347 DEBUGFS_STATS_DEL(rx_handlers_drop); 348 DEBUGFS_STATS_DEL(rx_handlers_queued); 349 DEBUGFS_STATS_DEL(rx_handlers_drop_nullfunc); 350 DEBUGFS_STATS_DEL(rx_handlers_drop_defrag); 351 DEBUGFS_STATS_DEL(rx_handlers_drop_short); 352 DEBUGFS_STATS_DEL(rx_handlers_drop_passive_scan); 353 DEBUGFS_STATS_DEL(tx_expand_skb_head); 354 DEBUGFS_STATS_DEL(tx_expand_skb_head_cloned); 355 DEBUGFS_STATS_DEL(rx_expand_skb_head); 356 DEBUGFS_STATS_DEL(rx_expand_skb_head2); 357 DEBUGFS_STATS_DEL(rx_handlers_fragments); 358 DEBUGFS_STATS_DEL(tx_status_drop); 359 DEBUGFS_STATS_DEL(wme_tx_queue); 360 DEBUGFS_STATS_DEL(wme_rx_queue); 361 #endif 362 DEBUGFS_STATS_DEL(dot11ACKFailureCount); 363 DEBUGFS_STATS_DEL(dot11RTSFailureCount); 364 DEBUGFS_STATS_DEL(dot11FCSErrorCount); 365 DEBUGFS_STATS_DEL(dot11RTSSuccessCount); 366 367 debugfs_remove(local->debugfs.statistics); 368 local->debugfs.statistics = NULL; 369 debugfs_remove(local->debugfs.stations); 370 local->debugfs.stations = NULL; 371 debugfs_remove(local->debugfs.keys); 372 local->debugfs.keys = NULL; 373 } 374