drivers/staging/rtl8187se/ieee80211/ieee80211_softmac_wx.c

   1 /* IEEE 802.11 SoftMAC layer
   2  * Copyright (c) 2005 Andrea Merello <andreamrl@tiscali.it>
   3  *
   4  * Mostly extracted from the rtl8180-sa2400 driver for the
   5  * in-kernel generic ieee802.11 stack.
   6  *
   7  * Some pieces of code might be stolen from ipw2100 driver
   8  * copyright of who own it's copyright ;-)
   9  *
  10  * PS wx handler mostly stolen from hostap, copyright who
  11  * own it's copyright ;-)
  12  *
  13  * released under the GPL
  14  */
  15
  16
  17 #include <linux/etherdevice.h>
  18
  19 #include "ieee80211.h"
  20
  21 /* FIXME: add A freqs */
  22
  23 const long ieee80211_wlan_frequencies[] = {
  24         2412, 2417, 2422, 2427,
  25         2432, 2437, 2442, 2447,
  26         2452, 2457, 2462, 2467,
  27         2472, 2484
  28 };
  29
  30
  31 int ieee80211_wx_set_freq(struct ieee80211_device *ieee, struct iw_request_info *a,
  32                              union iwreq_data *wrqu, char *b)
  33 {
  34         int ret;
  35         struct iw_freq *fwrq = &wrqu->freq;
  36 //      printk("in %s\n",__func__);
  37         down(&ieee->wx_sem);
  38
  39         if (ieee->iw_mode == IW_MODE_INFRA) {
  40                 ret = -EOPNOTSUPP;
  41                 goto out;
  42         }
  43
  44         /* if setting by freq convert to channel */
  45         if (fwrq->e == 1) {
  46                 if ((fwrq->m >= (int) 2.412e8 &&
  47                      fwrq->m <= (int) 2.487e8)) {
  48                         int f = fwrq->m / 100000;
  49                         int c = 0;
  50
  51                         while ((c < 14) && (f != ieee80211_wlan_frequencies[c]))
  52                                 c++;
  53
  54                         /* hack to fall through */
  55                         fwrq->e = 0;
  56                         fwrq->m = c + 1;
  57                 }
  58         }
  59
  60         if (fwrq->e > 0 || fwrq->m > 14 || fwrq->m < 1) {
  61                 ret = -EOPNOTSUPP;
  62                 goto out;
  63
  64         } else { /* Set the channel */
  65
  66
  67                 ieee->current_network.channel = fwrq->m;
  68                 ieee->set_chan(ieee->dev, ieee->current_network.channel);
  69
  70                 if (ieee->iw_mode == IW_MODE_ADHOC || ieee->iw_mode == IW_MODE_MASTER)
  71                         if (ieee->state == IEEE80211_LINKED) {
  72                                 ieee80211_stop_send_beacons(ieee);
  73                                 ieee80211_start_send_beacons(ieee);
  74                         }
  75         }
  76
  77         ret = 0;
  78 out:
  79         up(&ieee->wx_sem);
  80         return ret;
  81 }
  82
  83
  84 int ieee80211_wx_get_freq(struct ieee80211_device *ieee,
  85                              struct iw_request_info *a,
  86                              union iwreq_data *wrqu, char *b)
  87 {
  88         struct iw_freq *fwrq = &wrqu->freq;
  89
  90         if (ieee->current_network.channel == 0)
  91                 return -1;
  92
  93         fwrq->m = ieee->current_network.channel;
  94         fwrq->e = 0;
  95
  96         return 0;
  97 }
  98
  99 int ieee80211_wx_get_wap(struct ieee80211_device *ieee,
 100                             struct iw_request_info *info,
 101                             union iwreq_data *wrqu, char *extra)
 102 {
 103         unsigned long flags;
 104
 105         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
 106
 107         if (ieee->iw_mode == IW_MODE_MONITOR)
 108                 return -1;
 109
 110         /* We want avoid to give to the user inconsistent infos*/
 111         spin_lock_irqsave(&ieee->lock, flags);
 112
 113         if (ieee->state != IEEE80211_LINKED &&
 114                 ieee->state != IEEE80211_LINKED_SCANNING &&
 115                 ieee->wap_set == 0)
 116
 117                 memset(wrqu->ap_addr.sa_data, 0, ETH_ALEN);
 118         else
 119                 memcpy(wrqu->ap_addr.sa_data,
 120                        ieee->current_network.bssid, ETH_ALEN);
 121
 122         spin_unlock_irqrestore(&ieee->lock, flags);
 123
 124         return 0;
 125 }
 126
 127
 128 int ieee80211_wx_set_wap(struct ieee80211_device *ieee,
 129                          struct iw_request_info *info,
 130                          union iwreq_data *awrq,
 131                          char *extra)
 132 {
 133
 134         int ret = 0;
 135         unsigned long flags;
 136
 137         short ifup = ieee->proto_started;//dev->flags & IFF_UP;
 138         struct sockaddr *temp = (struct sockaddr *)awrq;
 139
 140         //printk("=======Set WAP:");
 141         ieee->sync_scan_hurryup = 1;
 142
 143         down(&ieee->wx_sem);
 144         /* use ifconfig hw ether */
 145         if (ieee->iw_mode == IW_MODE_MASTER) {
 146                 ret = -1;
 147                 goto out;
 148         }
 149
 150         if (temp->sa_family != ARPHRD_ETHER) {
 151                 ret = -EINVAL;
 152                 goto out;
 153         }
 154
 155         if (ifup)
 156                 ieee80211_stop_protocol(ieee);
 157
 158         /* just to avoid to give inconsistent infos in the
 159          * get wx method. not really needed otherwise
 160          */
 161         spin_lock_irqsave(&ieee->lock, flags);
 162
 163         memcpy(ieee->current_network.bssid, temp->sa_data, ETH_ALEN);
 164         ieee->wap_set = !is_zero_ether_addr(temp->sa_data);
 165         //printk(" %x:%x:%x:%x:%x:%x\n", ieee->current_network.bssid[0],ieee->current_network.bssid[1],ieee->current_network.bssid[2],ieee->current_network.bssid[3],ieee->current_network.bssid[4],ieee->current_network.bssid[5]);
 166
 167         spin_unlock_irqrestore(&ieee->lock, flags);
 168
 169         if (ifup)
 170                 ieee80211_start_protocol(ieee);
 171
 172 out:
 173         up(&ieee->wx_sem);
 174         return ret;
 175 }
 176
 177 int ieee80211_wx_get_essid(struct ieee80211_device *ieee, struct iw_request_info *a,
 178                             union iwreq_data *wrqu, char *b)
 179 {
 180         int len, ret = 0;
 181         unsigned long flags;
 182
 183         if (ieee->iw_mode == IW_MODE_MONITOR)
 184                 return -1;
 185
 186         /* We want avoid to give to the user inconsistent infos*/
 187         spin_lock_irqsave(&ieee->lock, flags);
 188
 189         if (ieee->current_network.ssid[0] == '\0' ||
 190                 ieee->current_network.ssid_len == 0){
 191                 ret = -1;
 192                 goto out;
 193         }
 194
 195         if (ieee->state != IEEE80211_LINKED &&
 196                 ieee->state != IEEE80211_LINKED_SCANNING &&
 197                 ieee->ssid_set == 0){
 198                 ret = -1;
 199                 goto out;
 200         }
 201         len = ieee->current_network.ssid_len;
 202         wrqu->essid.length = len;
 203         strncpy(b, ieee->current_network.ssid, len);
 204         wrqu->essid.flags = 1;
 205
 206 out:
 207         spin_unlock_irqrestore(&ieee->lock, flags);
 208
 209         return ret;
 210
 211 }
 212
 213 int ieee80211_wx_set_rate(struct ieee80211_device *ieee,
 214                              struct iw_request_info *info,
 215                              union iwreq_data *wrqu, char *extra)
 216 {
 217
 218         u32 target_rate = wrqu->bitrate.value;
 219
 220         //added by lizhaoming for auto mode
 221         if (target_rate == -1)
 222                 ieee->rate = 110;
 223         else
 224                 ieee->rate = target_rate/100000;
 225
 226         //FIXME: we might want to limit rate also in management protocols.
 227         return 0;
 228 }
 229
 230
 231
 232 int ieee80211_wx_get_rate(struct ieee80211_device *ieee,
 233                              struct iw_request_info *info,
 234                              union iwreq_data *wrqu, char *extra)
 235 {
 236
 237         wrqu->bitrate.value = ieee->rate * 100000;
 238
 239         return 0;
 240 }
 241
 242 int ieee80211_wx_set_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
 243                              union iwreq_data *wrqu, char *b)
 244 {
 245
 246         ieee->sync_scan_hurryup = 1;
 247
 248         down(&ieee->wx_sem);
 249
 250         if (wrqu->mode == ieee->iw_mode)
 251                 goto out;
 252
 253         if (wrqu->mode == IW_MODE_MONITOR)
 254                 ieee->dev->type = ARPHRD_IEEE80211;
 255         else
 256                 ieee->dev->type = ARPHRD_ETHER;
 257
 258         if (!ieee->proto_started) {
 259                 ieee->iw_mode = wrqu->mode;
 260         } else {
 261                 ieee80211_stop_protocol(ieee);
 262                 ieee->iw_mode = wrqu->mode;
 263                 ieee80211_start_protocol(ieee);
 264         }
 265
 266 out:
 267         up(&ieee->wx_sem);
 268         return 0;
 269 }
 270
 271
 272 void ieee80211_wx_sync_scan_wq(struct work_struct *work)
 273 {
 274         struct ieee80211_device *ieee = container_of(work, struct ieee80211_device, wx_sync_scan_wq);
 275         short chan;
 276
 277         chan = ieee->current_network.channel;
 278
 279         if (ieee->data_hard_stop)
 280                 ieee->data_hard_stop(ieee->dev);
 281
 282         ieee80211_stop_send_beacons(ieee);
 283
 284         ieee->state = IEEE80211_LINKED_SCANNING;
 285         ieee->link_change(ieee->dev);
 286
 287         ieee80211_start_scan_syncro(ieee);
 288
 289         ieee->set_chan(ieee->dev, chan);
 290
 291         ieee->state = IEEE80211_LINKED;
 292         ieee->link_change(ieee->dev);
 293
 294         if (ieee->data_hard_resume)
 295                 ieee->data_hard_resume(ieee->dev);
 296
 297         if (ieee->iw_mode == IW_MODE_ADHOC || ieee->iw_mode == IW_MODE_MASTER)
 298                 ieee80211_start_send_beacons(ieee);
 299
 300         //YJ,add,080828, In prevent of lossing ping packet during scanning
 301         //ieee80211_sta_ps_send_null_frame(ieee, false);
 302         //YJ,add,080828,end
 303
 304         up(&ieee->wx_sem);
 305
 306 }
 307
 308 int ieee80211_wx_set_scan(struct ieee80211_device *ieee, struct iw_request_info *a,
 309                              union iwreq_data *wrqu, char *b)
 310 {
 311         int ret = 0;
 312
 313         down(&ieee->wx_sem);
 314
 315         if (ieee->iw_mode == IW_MODE_MONITOR || !(ieee->proto_started)) {
 316                 ret = -1;
 317                 goto out;
 318         }
 319         //YJ,add,080828
 320         //In prevent of lossing ping packet during scanning
 321         //ieee80211_sta_ps_send_null_frame(ieee, true);
 322         //YJ,add,080828,end
 323
 324         if (ieee->state == IEEE80211_LINKED) {
 325                 queue_work(ieee->wq, &ieee->wx_sync_scan_wq);
 326                 /* intentionally forget to up sem */
 327                 return 0;
 328         }
 329
 330 out:
 331         up(&ieee->wx_sem);
 332         return ret;
 333 }
 334
 335 int ieee80211_wx_set_essid(struct ieee80211_device *ieee,
 336                               struct iw_request_info *a,
 337                               union iwreq_data *wrqu, char *extra)
 338 {
 339
 340         int ret = 0, len;
 341         short proto_started;
 342         unsigned long flags;
 343
 344         ieee->sync_scan_hurryup = 1;
 345
 346         down(&ieee->wx_sem);
 347
 348         proto_started = ieee->proto_started;
 349
 350         if (wrqu->essid.length > IW_ESSID_MAX_SIZE) {
 351                 ret = -E2BIG;
 352                 goto out;
 353         }
 354
 355         if (ieee->iw_mode == IW_MODE_MONITOR) {
 356                 ret = -1;
 357                 goto out;
 358         }
 359
 360         if (proto_started)
 361                 ieee80211_stop_protocol(ieee);
 362
 363         /* this is just to be sure that the GET wx callback
 364          * has consistent infos. not needed otherwise
 365          */
 366         spin_lock_irqsave(&ieee->lock, flags);
 367
 368         if (wrqu->essid.flags && wrqu->essid.length) {
 369 //YJ,modified,080819
 370                 len = (wrqu->essid.length < IW_ESSID_MAX_SIZE) ? (wrqu->essid.length) : IW_ESSID_MAX_SIZE;
 371                 memset(ieee->current_network.ssid, 0, ieee->current_network.ssid_len); //YJ,add,080819
 372                 strncpy(ieee->current_network.ssid, extra, len);
 373                 ieee->current_network.ssid_len = len;
 374                 ieee->ssid_set = 1;
 375 //YJ,modified,080819,end
 376
 377                 //YJ,add,080819,for hidden ap
 378                 if (len == 0) {
 379                         memset(ieee->current_network.bssid, 0, ETH_ALEN);
 380                         ieee->current_network.capability = 0;
 381                 }
 382                 //YJ,add,080819,for hidden ap,end
 383         } else {
 384                 ieee->ssid_set = 0;
 385                 ieee->current_network.ssid[0] = '\0';
 386                 ieee->current_network.ssid_len = 0;
 387         }
 388         //printk("==========set essid %s!\n",ieee->current_network.ssid);
 389         spin_unlock_irqrestore(&ieee->lock, flags);
 390
 391         if (proto_started)
 392                 ieee80211_start_protocol(ieee);
 393 out:
 394         up(&ieee->wx_sem);
 395         return ret;
 396 }
 397
 398 int ieee80211_wx_get_mode(struct ieee80211_device *ieee, struct iw_request_info *a,
 399                              union iwreq_data *wrqu, char *b)
 400 {
 401
 402         wrqu->mode = ieee->iw_mode;
 403         return 0;
 404 }
 405
 406 int ieee80211_wx_set_rawtx(struct ieee80211_device *ieee,
 407                                struct iw_request_info *info,
 408                                union iwreq_data *wrqu, char *extra)
 409 {
 410
 411         int *parms = (int *)extra;
 412         int enable = (parms[0] > 0);
 413         short prev = ieee->raw_tx;
 414
 415         down(&ieee->wx_sem);
 416
 417         if (enable)
 418                 ieee->raw_tx = 1;
 419         else
 420                 ieee->raw_tx = 0;
 421
 422         netdev_info(ieee->dev, "raw TX is %s\n",
 423                     ieee->raw_tx ? "enabled" : "disabled");
 424
 425         if (ieee->iw_mode == IW_MODE_MONITOR) {
 426                 if (prev == 0 && ieee->raw_tx) {
 427                         if (ieee->data_hard_resume)
 428                                 ieee->data_hard_resume(ieee->dev);
 429
 430                         netif_carrier_on(ieee->dev);
 431                 }
 432
 433                 if (prev && ieee->raw_tx == 1)
 434                         netif_carrier_off(ieee->dev);
 435         }
 436
 437         up(&ieee->wx_sem);
 438
 439         return 0;
 440 }
 441
 442 int ieee80211_wx_get_name(struct ieee80211_device *ieee,
 443                              struct iw_request_info *info,
 444                              union iwreq_data *wrqu, char *extra)
 445 {
 446         strlcpy(wrqu->name, "802.11", IFNAMSIZ);
 447         if (ieee->modulation & IEEE80211_CCK_MODULATION) {
 448                 strlcat(wrqu->name, "b", IFNAMSIZ);
 449                 if (ieee->modulation & IEEE80211_OFDM_MODULATION)
 450                         strlcat(wrqu->name, "/g", IFNAMSIZ);
 451         } else if (ieee->modulation & IEEE80211_OFDM_MODULATION)
 452                 strlcat(wrqu->name, "g", IFNAMSIZ);
 453
 454         if ((ieee->state == IEEE80211_LINKED) ||
 455                 (ieee->state == IEEE80211_LINKED_SCANNING))
 456                 strlcat(wrqu->name, "  link", IFNAMSIZ);
 457         else if (ieee->state != IEEE80211_NOLINK)
 458                 strlcat(wrqu->name, " .....", IFNAMSIZ);
 459
 460
 461         return 0;
 462 }
 463
 464
 465 /* this is mostly stolen from hostap */
 466 int ieee80211_wx_set_power(struct ieee80211_device *ieee,
 467                                  struct iw_request_info *info,
 468                                  union iwreq_data *wrqu, char *extra)
 469 {
 470         int ret = 0;
 471
 472         if ((!ieee->sta_wake_up) ||
 473             (!ieee->ps_request_tx_ack) ||
 474             (!ieee->enter_sleep_state) ||
 475             (!ieee->ps_is_queue_empty)) {
 476
 477                 printk("ERROR. PS mode tried to be use but driver missed a callback\n\n");
 478
 479                 return -1;
 480         }
 481
 482         down(&ieee->wx_sem);
 483
 484         if (wrqu->power.disabled) {
 485                 ieee->ps = IEEE80211_PS_DISABLED;
 486
 487                 goto exit;
 488         }
 489         switch (wrqu->power.flags & IW_POWER_MODE) {
 490         case IW_POWER_UNICAST_R:
 491                 ieee->ps = IEEE80211_PS_UNICAST;
 492
 493                 break;
 494         case IW_POWER_ALL_R:
 495                 ieee->ps = IEEE80211_PS_UNICAST | IEEE80211_PS_MBCAST;
 496                 break;
 497
 498         case IW_POWER_ON:
 499                 ieee->ps = IEEE80211_PS_DISABLED;
 500                 break;
 501
 502         default:
 503                 ret = -EINVAL;
 504                 goto exit;
 505         }
 506
 507         if (wrqu->power.flags & IW_POWER_TIMEOUT) {
 508
 509                 ieee->ps_timeout = wrqu->power.value / 1000;
 510                 printk("Timeout %d\n", ieee->ps_timeout);
 511         }
 512
 513         if (wrqu->power.flags & IW_POWER_PERIOD) {
 514
 515                 ret = -EOPNOTSUPP;
 516                 goto exit;
 517                 //wrq->value / 1024;
 518
 519         }
 520 exit:
 521         up(&ieee->wx_sem);
 522         return ret;
 523
 524 }
 525
 526 /* this is stolen from hostap */
 527 int ieee80211_wx_get_power(struct ieee80211_device *ieee,
 528                                  struct iw_request_info *info,
 529                                  union iwreq_data *wrqu, char *extra)
 530 {
 531         int ret = 0;
 532
 533         down(&ieee->wx_sem);
 534
 535         if (ieee->ps == IEEE80211_PS_DISABLED) {
 536                 wrqu->power.disabled = 1;
 537                 goto exit;
 538         }
 539
 540         wrqu->power.disabled = 0;
 541
 542 //      if ((wrqu->power.flags & IW_POWER_TYPE) == IW_POWER_TIMEOUT) {
 543                 wrqu->power.flags = IW_POWER_TIMEOUT;
 544                 wrqu->power.value = ieee->ps_timeout * 1000;
 545 //      } else {
 546 //              ret = -EOPNOTSUPP;
 547 //              goto exit;
 548                 //wrqu->power.flags = IW_POWER_PERIOD;
 549                 //wrqu->power.value = ieee->current_network.dtim_period *
 550                 //      ieee->current_network.beacon_interval * 1024;
 551 //      }
 552
 553
 554         if (ieee->ps & IEEE80211_PS_MBCAST)
 555                 wrqu->power.flags |= IW_POWER_ALL_R;
 556         else
 557                 wrqu->power.flags |= IW_POWER_UNICAST_R;
 558
 559 exit:
 560         up(&ieee->wx_sem);
 561         return ret;
 562
 563 }