drivers/net/wireless/intersil/hostap/hostap_proc.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* /proc routines for Host AP driver */
   3
   4 #include <linux/types.h>
   5 #include <linux/proc_fs.h>
   6 #include <linux/export.h>
   7 #include <net/lib80211.h>
   8
   9 #include "hostap_wlan.h"
  10 #include "hostap.h"
  11
  12 #define PROC_LIMIT (PAGE_SIZE - 80)
  13
  14
  15 #ifndef PRISM2_NO_PROCFS_DEBUG
  16 static int prism2_debug_proc_show(struct seq_file *m, void *v)
  17 {
  18         local_info_t *local = m->private;
  19         int i;
  20
  21         seq_printf(m, "next_txfid=%d next_alloc=%d\n",
  22                    local->next_txfid, local->next_alloc);
  23         for (i = 0; i < PRISM2_TXFID_COUNT; i++)
  24                 seq_printf(m, "FID: tx=%04X intransmit=%04X\n",
  25                            local->txfid[i], local->intransmitfid[i]);
  26         seq_printf(m, "FW TX rate control: %d\n", local->fw_tx_rate_control);
  27         seq_printf(m, "beacon_int=%d\n", local->beacon_int);
  28         seq_printf(m, "dtim_period=%d\n", local->dtim_period);
  29         seq_printf(m, "wds_max_connections=%d\n", local->wds_max_connections);
  30         seq_printf(m, "dev_enabled=%d\n", local->dev_enabled);
  31         seq_printf(m, "sw_tick_stuck=%d\n", local->sw_tick_stuck);
  32         for (i = 0; i < WEP_KEYS; i++) {
  33                 if (local->crypt_info.crypt[i] &&
  34                     local->crypt_info.crypt[i]->ops) {
  35                         seq_printf(m, "crypt[%d]=%s\n", i,
  36                                    local->crypt_info.crypt[i]->ops->name);
  37                 }
  38         }
  39         seq_printf(m, "pri_only=%d\n", local->pri_only);
  40         seq_printf(m, "pci=%d\n", local->func->hw_type == HOSTAP_HW_PCI);
  41         seq_printf(m, "sram_type=%d\n", local->sram_type);
  42         seq_printf(m, "no_pri=%d\n", local->no_pri);
  43
  44         return 0;
  45 }
  46
  47 static int prism2_debug_proc_open(struct inode *inode, struct file *file)
  48 {
  49         return single_open(file, prism2_debug_proc_show, PDE_DATA(inode));
  50 }
  51
  52 static const struct file_operations prism2_debug_proc_fops = {
  53         .open           = prism2_debug_proc_open,
  54         .read           = seq_read,
  55         .llseek         = seq_lseek,
  56         .release        = single_release,
  57 };
  58 #endif /* PRISM2_NO_PROCFS_DEBUG */
  59
  60
  61 static int prism2_stats_proc_show(struct seq_file *m, void *v)
  62 {
  63         local_info_t *local = m->private;
  64         struct comm_tallies_sums *sums = &local->comm_tallies;
  65
  66         seq_printf(m, "TxUnicastFrames=%u\n", sums->tx_unicast_frames);
  67         seq_printf(m, "TxMulticastframes=%u\n", sums->tx_multicast_frames);
  68         seq_printf(m, "TxFragments=%u\n", sums->tx_fragments);
  69         seq_printf(m, "TxUnicastOctets=%u\n", sums->tx_unicast_octets);
  70         seq_printf(m, "TxMulticastOctets=%u\n", sums->tx_multicast_octets);
  71         seq_printf(m, "TxDeferredTransmissions=%u\n",
  72                    sums->tx_deferred_transmissions);
  73         seq_printf(m, "TxSingleRetryFrames=%u\n", sums->tx_single_retry_frames);
  74         seq_printf(m, "TxMultipleRetryFrames=%u\n",
  75                    sums->tx_multiple_retry_frames);
  76         seq_printf(m, "TxRetryLimitExceeded=%u\n",
  77                    sums->tx_retry_limit_exceeded);
  78         seq_printf(m, "TxDiscards=%u\n", sums->tx_discards);
  79         seq_printf(m, "RxUnicastFrames=%u\n", sums->rx_unicast_frames);
  80         seq_printf(m, "RxMulticastFrames=%u\n", sums->rx_multicast_frames);
  81         seq_printf(m, "RxFragments=%u\n", sums->rx_fragments);
  82         seq_printf(m, "RxUnicastOctets=%u\n", sums->rx_unicast_octets);
  83         seq_printf(m, "RxMulticastOctets=%u\n", sums->rx_multicast_octets);
  84         seq_printf(m, "RxFCSErrors=%u\n", sums->rx_fcs_errors);
  85         seq_printf(m, "RxDiscardsNoBuffer=%u\n", sums->rx_discards_no_buffer);
  86         seq_printf(m, "TxDiscardsWrongSA=%u\n", sums->tx_discards_wrong_sa);
  87         seq_printf(m, "RxDiscardsWEPUndecryptable=%u\n",
  88                    sums->rx_discards_wep_undecryptable);
  89         seq_printf(m, "RxMessageInMsgFragments=%u\n",
  90                    sums->rx_message_in_msg_fragments);
  91         seq_printf(m, "RxMessageInBadMsgFragments=%u\n",
  92                    sums->rx_message_in_bad_msg_fragments);
  93         /* FIX: this may grow too long for one page(?) */
  94
  95         return 0;
  96 }
  97
  98 static int prism2_stats_proc_open(struct inode *inode, struct file *file)
  99 {
 100         return single_open(file, prism2_stats_proc_show, PDE_DATA(inode));
 101 }
 102
 103 static const struct file_operations prism2_stats_proc_fops = {
 104         .open           = prism2_stats_proc_open,
 105         .read           = seq_read,
 106         .llseek         = seq_lseek,
 107         .release        = single_release,
 108 };
 109
 110
 111 static int prism2_wds_proc_show(struct seq_file *m, void *v)
 112 {
 113         struct list_head *ptr = v;
 114         struct hostap_interface *iface;
 115
 116         iface = list_entry(ptr, struct hostap_interface, list);
 117         if (iface->type == HOSTAP_INTERFACE_WDS)
 118                 seq_printf(m, "%s\t%pM\n",
 119                            iface->dev->name, iface->u.wds.remote_addr);
 120         return 0;
 121 }
 122
 123 static void *prism2_wds_proc_start(struct seq_file *m, loff_t *_pos)
 124 {
 125         local_info_t *local = m->private;
 126         read_lock_bh(&local->iface_lock);
 127         return seq_list_start(&local->hostap_interfaces, *_pos);
 128 }
 129
 130 static void *prism2_wds_proc_next(struct seq_file *m, void *v, loff_t *_pos)
 131 {
 132         local_info_t *local = m->private;
 133         return seq_list_next(v, &local->hostap_interfaces, _pos);
 134 }
 135
 136 static void prism2_wds_proc_stop(struct seq_file *m, void *v)
 137 {
 138         local_info_t *local = m->private;
 139         read_unlock_bh(&local->iface_lock);
 140 }
 141
 142 static const struct seq_operations prism2_wds_proc_seqops = {
 143         .start  = prism2_wds_proc_start,
 144         .next   = prism2_wds_proc_next,
 145         .stop   = prism2_wds_proc_stop,
 146         .show   = prism2_wds_proc_show,
 147 };
 148
 149 static int prism2_wds_proc_open(struct inode *inode, struct file *file)
 150 {
 151         int ret = seq_open(file, &prism2_wds_proc_seqops);
 152         if (ret == 0) {
 153                 struct seq_file *m = file->private_data;
 154                 m->private = PDE_DATA(inode);
 155         }
 156         return ret;
 157 }
 158
 159 static const struct file_operations prism2_wds_proc_fops = {
 160         .open           = prism2_wds_proc_open,
 161         .read           = seq_read,
 162         .llseek         = seq_lseek,
 163         .release        = seq_release,
 164 };
 165
 166
 167 static int prism2_bss_list_proc_show(struct seq_file *m, void *v)
 168 {
 169         local_info_t *local = m->private;
 170         struct list_head *ptr = v;
 171         struct hostap_bss_info *bss;
 172
 173         if (ptr == &local->bss_list) {
 174                 seq_printf(m, "#BSSID\tlast_update\tcount\tcapab_info\tSSID(txt)\t"
 175                            "SSID(hex)\tWPA IE\n");
 176                 return 0;
 177         }
 178
 179         bss = list_entry(ptr, struct hostap_bss_info, list);
 180         seq_printf(m, "%pM\t%lu\t%u\t0x%x\t",
 181                    bss->bssid, bss->last_update,
 182                    bss->count, bss->capab_info);
 183
 184         seq_printf(m, "%*pE", (int)bss->ssid_len, bss->ssid);
 185
 186         seq_putc(m, '\t');
 187         seq_printf(m, "%*phN", (int)bss->ssid_len, bss->ssid);
 188         seq_putc(m, '\t');
 189         seq_printf(m, "%*phN", (int)bss->wpa_ie_len, bss->wpa_ie);
 190         seq_putc(m, '\n');
 191         return 0;
 192 }
 193
 194 static void *prism2_bss_list_proc_start(struct seq_file *m, loff_t *_pos)
 195 {
 196         local_info_t *local = m->private;
 197         spin_lock_bh(&local->lock);
 198         return seq_list_start_head(&local->bss_list, *_pos);
 199 }
 200
 201 static void *prism2_bss_list_proc_next(struct seq_file *m, void *v, loff_t *_pos)
 202 {
 203         local_info_t *local = m->private;
 204         return seq_list_next(v, &local->bss_list, _pos);
 205 }
 206
 207 static void prism2_bss_list_proc_stop(struct seq_file *m, void *v)
 208 {
 209         local_info_t *local = m->private;
 210         spin_unlock_bh(&local->lock);
 211 }
 212
 213 static const struct seq_operations prism2_bss_list_proc_seqops = {
 214         .start  = prism2_bss_list_proc_start,
 215         .next   = prism2_bss_list_proc_next,
 216         .stop   = prism2_bss_list_proc_stop,
 217         .show   = prism2_bss_list_proc_show,
 218 };
 219
 220 static int prism2_bss_list_proc_open(struct inode *inode, struct file *file)
 221 {
 222         int ret = seq_open(file, &prism2_bss_list_proc_seqops);
 223         if (ret == 0) {
 224                 struct seq_file *m = file->private_data;
 225                 m->private = PDE_DATA(inode);
 226         }
 227         return ret;
 228 }
 229
 230 static const struct file_operations prism2_bss_list_proc_fops = {
 231         .open           = prism2_bss_list_proc_open,
 232         .read           = seq_read,
 233         .llseek         = seq_lseek,
 234         .release        = seq_release,
 235 };
 236
 237
 238 static int prism2_crypt_proc_show(struct seq_file *m, void *v)
 239 {
 240         local_info_t *local = m->private;
 241         int i;
 242
 243         seq_printf(m, "tx_keyidx=%d\n", local->crypt_info.tx_keyidx);
 244         for (i = 0; i < WEP_KEYS; i++) {
 245                 if (local->crypt_info.crypt[i] &&
 246                     local->crypt_info.crypt[i]->ops &&
 247                     local->crypt_info.crypt[i]->ops->print_stats) {
 248                         local->crypt_info.crypt[i]->ops->print_stats(
 249                                 m, local->crypt_info.crypt[i]->priv);
 250                 }
 251         }
 252         return 0;
 253 }
 254
 255 static int prism2_crypt_proc_open(struct inode *inode, struct file *file)
 256 {
 257         return single_open(file, prism2_crypt_proc_show, PDE_DATA(inode));
 258 }
 259
 260 static const struct file_operations prism2_crypt_proc_fops = {
 261         .open           = prism2_crypt_proc_open,
 262         .read           = seq_read,
 263         .llseek         = seq_lseek,
 264         .release        = single_release,
 265 };
 266
 267
 268 static ssize_t prism2_pda_proc_read(struct file *file, char __user *buf,
 269                                     size_t count, loff_t *_pos)
 270 {
 271         local_info_t *local = PDE_DATA(file_inode(file));
 272         size_t off;
 273
 274         if (local->pda == NULL || *_pos >= PRISM2_PDA_SIZE)
 275                 return 0;
 276
 277         off = *_pos;
 278         if (count > PRISM2_PDA_SIZE - off)
 279                 count = PRISM2_PDA_SIZE - off;
 280         if (copy_to_user(buf, local->pda + off, count) != 0)
 281                 return -EFAULT;
 282         *_pos += count;
 283         return count;
 284 }
 285
 286 static const struct file_operations prism2_pda_proc_fops = {
 287         .read           = prism2_pda_proc_read,
 288         .llseek         = generic_file_llseek,
 289 };
 290
 291
 292 static ssize_t prism2_aux_dump_proc_no_read(struct file *file, char __user *buf,
 293                                             size_t bufsize, loff_t *_pos)
 294 {
 295         return 0;
 296 }
 297
 298 static const struct file_operations prism2_aux_dump_proc_fops = {
 299         .read           = prism2_aux_dump_proc_no_read,
 300 };
 301
 302
 303 #ifdef PRISM2_IO_DEBUG
 304 static int prism2_io_debug_proc_read(char *page, char **start, off_t off,
 305                                      int count, int *eof, void *data)
 306 {
 307         local_info_t *local = (local_info_t *) data;
 308         int head = local->io_debug_head;
 309         int start_bytes, left, copy, copied;
 310
 311         if (off + count > PRISM2_IO_DEBUG_SIZE * 4) {
 312                 *eof = 1;
 313                 if (off >= PRISM2_IO_DEBUG_SIZE * 4)
 314                         return 0;
 315                 count = PRISM2_IO_DEBUG_SIZE * 4 - off;
 316         }
 317
 318         copied = 0;
 319         start_bytes = (PRISM2_IO_DEBUG_SIZE - head) * 4;
 320         left = count;
 321
 322         if (off < start_bytes) {
 323                 copy = start_bytes - off;
 324                 if (copy > count)
 325                         copy = count;
 326                 memcpy(page, ((u8 *) &local->io_debug[head]) + off, copy);
 327                 left -= copy;
 328                 if (left > 0)
 329                         memcpy(&page[copy], local->io_debug, left);
 330         } else {
 331                 memcpy(page, ((u8 *) local->io_debug) + (off - start_bytes),
 332                        left);
 333         }
 334
 335         *start = page;
 336
 337         return count;
 338 }
 339 #endif /* PRISM2_IO_DEBUG */
 340
 341
 342 #ifndef PRISM2_NO_STATION_MODES
 343 static int prism2_scan_results_proc_show(struct seq_file *m, void *v)
 344 {
 345         local_info_t *local = m->private;
 346         unsigned long entry;
 347         int i, len;
 348         struct hfa384x_hostscan_result *scanres;
 349         u8 *p;
 350
 351         if (v == SEQ_START_TOKEN) {
 352                 seq_printf(m,
 353                            "CHID ANL SL BcnInt Capab Rate BSSID ATIM SupRates SSID\n");
 354                 return 0;
 355         }
 356
 357         entry = (unsigned long)v - 2;
 358         scanres = &local->last_scan_results[entry];
 359
 360         seq_printf(m, "%d %d %d %d 0x%02x %d %pM %d ",
 361                    le16_to_cpu(scanres->chid),
 362                    (s16) le16_to_cpu(scanres->anl),
 363                    (s16) le16_to_cpu(scanres->sl),
 364                    le16_to_cpu(scanres->beacon_interval),
 365                    le16_to_cpu(scanres->capability),
 366                    le16_to_cpu(scanres->rate),
 367                    scanres->bssid,
 368                    le16_to_cpu(scanres->atim));
 369
 370         p = scanres->sup_rates;
 371         for (i = 0; i < sizeof(scanres->sup_rates); i++) {
 372                 if (p[i] == 0)
 373                         break;
 374                 seq_printf(m, "<%02x>", p[i]);
 375         }
 376         seq_putc(m, ' ');
 377
 378         p = scanres->ssid;
 379         len = le16_to_cpu(scanres->ssid_len);
 380         if (len > 32)
 381                 len = 32;
 382         for (i = 0; i < len; i++) {
 383                 unsigned char c = p[i];
 384                 if (c >= 32 && c < 127)
 385                         seq_putc(m, c);
 386                 else
 387                         seq_printf(m, "<%02x>", c);
 388         }
 389         seq_putc(m, '\n');
 390         return 0;
 391 }
 392
 393 static void *prism2_scan_results_proc_start(struct seq_file *m, loff_t *_pos)
 394 {
 395         local_info_t *local = m->private;
 396         spin_lock_bh(&local->lock);
 397
 398         /* We have a header (pos 0) + N results to show (pos 1...N) */
 399         if (*_pos > local->last_scan_results_count)
 400                 return NULL;
 401         return (void *)(unsigned long)(*_pos + 1); /* 0 would be EOF */
 402 }
 403
 404 static void *prism2_scan_results_proc_next(struct seq_file *m, void *v, loff_t *_pos)
 405 {
 406         local_info_t *local = m->private;
 407
 408         ++*_pos;
 409         if (*_pos > local->last_scan_results_count)
 410                 return NULL;
 411         return (void *)(unsigned long)(*_pos + 1); /* 0 would be EOF */
 412 }
 413
 414 static void prism2_scan_results_proc_stop(struct seq_file *m, void *v)
 415 {
 416         local_info_t *local = m->private;
 417         spin_unlock_bh(&local->lock);
 418 }
 419
 420 static const struct seq_operations prism2_scan_results_proc_seqops = {
 421         .start  = prism2_scan_results_proc_start,
 422         .next   = prism2_scan_results_proc_next,
 423         .stop   = prism2_scan_results_proc_stop,
 424         .show   = prism2_scan_results_proc_show,
 425 };
 426
 427 static int prism2_scan_results_proc_open(struct inode *inode, struct file *file)
 428 {
 429         int ret = seq_open(file, &prism2_scan_results_proc_seqops);
 430         if (ret == 0) {
 431                 struct seq_file *m = file->private_data;
 432                 m->private = PDE_DATA(inode);
 433         }
 434         return ret;
 435 }
 436
 437 static const struct file_operations prism2_scan_results_proc_fops = {
 438         .open           = prism2_scan_results_proc_open,
 439         .read           = seq_read,
 440         .llseek         = seq_lseek,
 441         .release        = seq_release,
 442 };
 443
 444
 445 #endif /* PRISM2_NO_STATION_MODES */
 446
 447
 448 void hostap_init_proc(local_info_t *local)
 449 {
 450         local->proc = NULL;
 451
 452         if (hostap_proc == NULL) {
 453                 printk(KERN_WARNING "%s: hostap proc directory not created\n",
 454                        local->dev->name);
 455                 return;
 456         }
 457
 458         local->proc = proc_mkdir(local->ddev->name, hostap_proc);
 459         if (local->proc == NULL) {
 460                 printk(KERN_INFO "/proc/net/hostap/%s creation failed\n",
 461                        local->ddev->name);
 462                 return;
 463         }
 464
 465 #ifndef PRISM2_NO_PROCFS_DEBUG
 466         proc_create_data("debug", 0, local->proc,
 467                          &prism2_debug_proc_fops, local);
 468 #endif /* PRISM2_NO_PROCFS_DEBUG */
 469         proc_create_data("stats", 0, local->proc,
 470                          &prism2_stats_proc_fops, local);
 471         proc_create_data("wds", 0, local->proc,
 472                          &prism2_wds_proc_fops, local);
 473         proc_create_data("pda", 0, local->proc,
 474                          &prism2_pda_proc_fops, local);
 475         proc_create_data("aux_dump", 0, local->proc,
 476                          local->func->read_aux_fops ?: &prism2_aux_dump_proc_fops,
 477                          local);
 478         proc_create_data("bss_list", 0, local->proc,
 479                          &prism2_bss_list_proc_fops, local);
 480         proc_create_data("crypt", 0, local->proc,
 481                          &prism2_crypt_proc_fops, local);
 482 #ifdef PRISM2_IO_DEBUG
 483         proc_create_data("io_debug", 0, local->proc,
 484                          &prism2_io_debug_proc_fops, local);
 485 #endif /* PRISM2_IO_DEBUG */
 486 #ifndef PRISM2_NO_STATION_MODES
 487         proc_create_data("scan_results", 0, local->proc,
 488                          &prism2_scan_results_proc_fops, local);
 489 #endif /* PRISM2_NO_STATION_MODES */
 490 }
 491
 492
 493 void hostap_remove_proc(local_info_t *local)
 494 {
 495         proc_remove(local->proc);
 496 }
 497
 498
 499 EXPORT_SYMBOL(hostap_init_proc);
 500 EXPORT_SYMBOL(hostap_remove_proc);