package/openwrt/wlcompat.c

   1 /*
   2  * wlcompat.c
   3  *
   4  * Copyright (C) 2005 Mike Baker,
   5  *                    Felix Fietkau <nbd@vd-s.ath.cx>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * as published by the Free Software Foundation; either version 2
  10  * of the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20  *
  21  * $Id$
  22  */
  23
  24
  25 #include <linux/config.h>
  26 #include <linux/module.h>
  27 #include <linux/init.h>
  28 #include <linux/if_arp.h>
  29 #include <asm/uaccess.h>
  30 #include <linux/wireless.h>
  31
  32 #include <net/iw_handler.h>
  33 #include <wlioctl.h>
  34
  35 static struct net_device *dev;
  36 char buf[WLC_IOCTL_MAXLEN];
  37
  38 /* The frequency of each channel in MHz */
  39 const long channel_frequency[] = {
  40         2412, 2417, 2422, 2427, 2432, 2437, 2442,
  41         2447, 2452, 2457, 2462, 2467, 2472, 2484
  42 };
  43 #define NUM_CHANNELS ( sizeof(channel_frequency) / sizeof(channel_frequency[0]) )
  44
  45 static int wl_ioctl(struct net_device *dev, int cmd, void *buf, int len)
  46 {
  47         mm_segment_t old_fs = get_fs();
  48         struct ifreq ifr;
  49         int ret;
  50         wl_ioctl_t ioc;
  51         ioc.cmd = cmd;
  52         ioc.buf = buf;
  53         ioc.len = len;
  54         strncpy(ifr.ifr_name, dev->name, IFNAMSIZ);
  55         ifr.ifr_data = (caddr_t) &ioc;
  56         set_fs(KERNEL_DS);
  57         ret = dev->do_ioctl(dev,&ifr,SIOCDEVPRIVATE);
  58         set_fs (old_fs);
  59         return ret;
  60 }
  61
  62 static int wlcompat_ioctl_getiwrange(struct net_device *dev,
  63                                     char *extra)
  64 {
  65         int i, k;
  66         struct iw_range *range;
  67
  68         range = (struct iw_range *) extra;
  69
  70         range->we_version_compiled = WIRELESS_EXT;
  71         range->we_version_source = WIRELESS_EXT;
  72
  73         range->min_nwid = range->max_nwid = 0;
  74
  75         range->num_channels = NUM_CHANNELS;
  76         k = 0;
  77         for (i = 0; i < NUM_CHANNELS; i++) {
  78                 range->freq[k].i = i + 1;
  79                 range->freq[k].m = channel_frequency[i] * 100000;
  80                 range->freq[k].e = 1;
  81                 k++;
  82                 if (k >= IW_MAX_FREQUENCIES)
  83                         break;
  84         }
  85         range->num_frequency = k;
  86         range->sensitivity = 3;
  87
  88         /* nbd: don't know what this means, but other drivers set it this way */
  89         range->pmp_flags = IW_POWER_PERIOD;
  90         range->pmt_flags = IW_POWER_TIMEOUT;
  91         range->pm_capa = IW_POWER_PERIOD | IW_POWER_TIMEOUT | IW_POWER_UNICAST_R;
  92
  93         range->min_pmp = 0;
  94         range->max_pmp = 65535000;
  95         range->min_pmt = 0;
  96         range->max_pmt = 65535 * 1000;
  97
  98         range->min_rts = 0;
  99         if (wl_ioctl(dev, WLC_GET_RTS, &range->max_rts, sizeof(int)) < 0)
 100                 range->max_rts = 2347;
 101
 102         range->min_frag = 256;
 103
 104         if (wl_ioctl(dev, WLC_GET_FRAG, &range->max_frag, sizeof(int)) < 0)
 105                 range->max_frag = 2346;
 106
 107         range->txpower_capa = IW_TXPOW_MWATT;
 108
 109         return 0;
 110 }
 111
 112
 113 static int wlcompat_set_scan(struct net_device *dev,
 114                          struct iw_request_info *info,
 115                          union iwreq_data *wrqu,
 116                          char *extra)
 117 {
 118         int ap = 0, oldap = 0;
 119         wl_scan_params_t params;
 120
 121         memset(&params, 0, sizeof(params));
 122
 123         /* use defaults (same parameters as wl scan) */
 124         memset(&params.bssid, 0xff, sizeof(params.bssid));
 125         params.bss_type = DOT11_BSSTYPE_ANY;
 126         params.scan_type = -1;
 127         params.nprobes = -1;
 128         params.active_time = -1;
 129         params.passive_time = -1;
 130         params.home_time = -1;
 131
 132         /* can only scan in STA mode */
 133         wl_ioctl(dev, WLC_GET_AP, &oldap, sizeof(oldap));
 134         if (oldap > 0)
 135                 wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap));
 136
 137         if (wl_ioctl(dev, WLC_SCAN, &params, 64) < 0)
 138                 return -EINVAL;
 139
 140         if (oldap > 0)
 141                 wl_ioctl(dev, WLC_SET_AP, &oldap, sizeof(oldap));
 142
 143         return 0;
 144 }
 145
 146
 147 static int wlcompat_get_scan(struct net_device *dev,
 148                          struct iw_request_info *info,
 149                          union iwreq_data *wrqu,
 150                          char *extra)
 151 {
 152         wl_scan_results_t *results = (wl_scan_results_t *) buf;
 153         wl_bss_info_t *bss_info;
 154         char *info_ptr;
 155         char *current_ev = extra;
 156         char *current_val;
 157         char *end_buf = extra + IW_SCAN_MAX_DATA;
 158         struct iw_event iwe;
 159         int i, j;
 160
 161         if (wl_ioctl(dev, WLC_SCAN_RESULTS, buf, WLC_IOCTL_MAXLEN) < 0)
 162                 return -EAGAIN;
 163
 164         bss_info = &(results->bss_info[0]);
 165         info_ptr = (char *) bss_info;
 166         for (i = 0; i < results->count; i++) {
 167
 168                 /* send the cell address (must be sent first) */
 169                 iwe.cmd = SIOCGIWAP;
 170                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
 171                 memcpy(&iwe.u.ap_addr.sa_data, &bss_info->BSSID, sizeof(bss_info->BSSID));
 172                 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_ADDR_LEN);
 173
 174                 /* send the ESSID */
 175                 iwe.cmd = SIOCGIWESSID;
 176                 iwe.u.data.length = bss_info->SSID_len;
 177                 if (iwe.u.data.length > IW_ESSID_MAX_SIZE)
 178                         iwe.u.data.length = IW_ESSID_MAX_SIZE;
 179                 iwe.u.data.flags = 1;
 180                 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss_info->SSID);
 181
 182                 /* send frequency/channel info */
 183                 iwe.cmd = SIOCGIWFREQ;
 184                 iwe.u.freq.e = 0;
 185                 iwe.u.freq.m = bss_info->channel;
 186                 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN);
 187
 188                 /* add quality statistics */
 189                 iwe.cmd = IWEVQUAL;
 190                 iwe.u.qual.level = bss_info->RSSI;
 191                 iwe.u.qual.noise = bss_info->phy_noise;
 192                 iwe.u.qual.qual = 0;
 193                 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_QUAL_LEN);
 194
 195                 /* send rate information */
 196                 iwe.cmd = SIOCGIWRATE;
 197                 current_val = current_ev + IW_EV_LCP_LEN;
 198                 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
 199
 200                 for(j = 0 ; j < bss_info->rateset.count ; j++) {
 201                         iwe.u.bitrate.value = ((bss_info->rateset.rates[j] & 0x7f) * 500000);
 202                         current_val = iwe_stream_add_value(current_ev, current_val, end_buf, &iwe, IW_EV_PARAM_LEN);
 203                 }
 204                 if((current_val - current_ev) > IW_EV_LCP_LEN)
 205                         current_ev = current_val;
 206
 207                 info_ptr += sizeof(wl_bss_info_t);
 208                 if (bss_info->ie_length % 4)
 209                         info_ptr += bss_info->ie_length + 4 - (bss_info->ie_length % 4);
 210                 else
 211                         info_ptr += bss_info->ie_length;
 212                 bss_info = (wl_bss_info_t *) info_ptr;
 213         }
 214
 215         wrqu->data.length = (current_ev - extra);
 216         wrqu->data.flags = 0;
 217
 218         return 0;
 219 }
 220
 221 static int wlcompat_ioctl(struct net_device *dev,
 222                          struct iw_request_info *info,
 223                          union iwreq_data *wrqu,
 224                          char *extra)
 225 {
 226         switch (info->cmd) {
 227                 case SIOCGIWNAME:
 228                         strcpy(wrqu->name, "IEEE 802.11-DS");
 229                         break;
 230                 case SIOCGIWFREQ:
 231                 {
 232                         channel_info_t ci;
 233
 234                         if (wl_ioctl(dev,WLC_GET_CHANNEL, &ci, sizeof(ci)) < 0)
 235                                 return -EINVAL;
 236
 237                         wrqu->freq.m = ci.target_channel;
 238                         wrqu->freq.e = 0;
 239                         break;
 240                 }
 241                 case SIOCSIWFREQ:
 242                 {
 243                         if (wrqu->freq.e == 1) {
 244                                 int channel = 0;
 245                                 int f = wrqu->freq.m / 100000;
 246                                 while ((channel < NUM_CHANNELS + 1) && (f != channel_frequency[channel]))
 247                                         channel++;
 248
 249                                 if (channel == NUM_CHANNELS) // channel not found
 250                                         return -EINVAL;
 251
 252                                 wrqu->freq.e = 0;
 253                                 wrqu->freq.m = channel + 1;
 254                         }
 255                         if ((wrqu->freq.e == 0) && (wrqu->freq.m < 1000)) {
 256                                 if (wl_ioctl(dev, WLC_SET_CHANNEL, &wrqu->freq.m, sizeof(int)) < 0)
 257                                         return -EINVAL;
 258                         } else {
 259                                 return -EINVAL;
 260                         }
 261                         break;
 262                 }
 263                 case SIOCGIWAP:
 264                 {
 265                         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
 266                         if (wl_ioctl(dev,WLC_GET_BSSID,wrqu->ap_addr.sa_data,6) < 0)
 267                                 return -EINVAL;
 268                         break;
 269                 }
 270                 case SIOCGIWESSID:
 271                 {
 272                         wlc_ssid_t ssid;
 273
 274                         if (wl_ioctl(dev,WLC_GET_SSID, &ssid, sizeof(wlc_ssid_t)) < 0)
 275                                 return -EINVAL;
 276
 277                         wrqu->essid.flags = wrqu->data.flags = 1;
 278                         wrqu->essid.length = wrqu->data.length = ssid.SSID_len + 1;
 279                         memcpy(extra,ssid.SSID,ssid.SSID_len + 1);
 280                         break;
 281                 }
 282                 case SIOCSIWESSID:
 283                 {
 284                         wlc_ssid_t ssid;
 285                         memset(&ssid, 0, sizeof(ssid));
 286                         ssid.SSID_len = strlen(extra);
 287                         if (ssid.SSID_len > WLC_ESSID_MAX_SIZE)
 288                                 ssid.SSID_len = WLC_ESSID_MAX_SIZE;
 289                         memcpy(ssid.SSID, extra, ssid.SSID_len);
 290                         if (wl_ioctl(dev, WLC_SET_SSID, &ssid, sizeof(ssid)) < 0)
 291                                 return -EINVAL;
 292                         break;
 293                 }
 294                 case SIOCGIWRTS:
 295                 {
 296                         if (wl_ioctl(dev,WLC_GET_RTS,&(wrqu->rts.value),sizeof(int)) < 0)
 297                                 return -EINVAL;
 298                         break;
 299                 }
 300                 case SIOCSIWRTS:
 301                 {
 302                         if (wl_ioctl(dev,WLC_SET_RTS,&(wrqu->rts.value),sizeof(int)) < 0)
 303                                 return -EINVAL;
 304                         break;
 305                 }
 306                 case SIOCGIWFRAG:
 307                 {
 308                         if (wl_ioctl(dev,WLC_GET_FRAG,&(wrqu->frag.value),sizeof(int)) < 0)
 309                                 return -EINVAL;
 310                         break;
 311                 }
 312                 case SIOCSIWFRAG:
 313                 {
 314                         if (wl_ioctl(dev,WLC_SET_FRAG,&(wrqu->frag.value),sizeof(int)) < 0)
 315                                 return -EINVAL;
 316                         break;
 317                 }
 318                 case SIOCGIWTXPOW:
 319                 {
 320                         wrqu->txpower.value = 0;
 321                         if (wl_ioctl(dev,WLC_GET_TXPWR, &(wrqu->txpower.value), sizeof(int)) < 0)
 322                                 return -EINVAL;
 323                         wrqu->txpower.fixed = 0;
 324                         wrqu->txpower.disabled = 0;
 325                         wrqu->txpower.flags = IW_TXPOW_MWATT;
 326                         break;
 327                 }
 328                 case SIOCSIWTXPOW:
 329                 {
 330                         if (wrqu->txpower.flags != IW_TXPOW_MWATT)
 331                                 return -EINVAL;
 332
 333                         if (wl_ioctl(dev, WLC_SET_TXPWR, &wrqu->txpower.value, sizeof(int)) < 0)
 334                                 return -EINVAL;
 335                 }
 336                 case SIOCGIWENCODE:
 337                 {
 338                         int val = 0;
 339                         if (wl_ioctl(dev, WLC_GET_WEP, &val, sizeof(val)) < 0)
 340                                 return -EINVAL;
 341
 342                         if (val > 0) {
 343                                 wrqu->data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
 344                         } else {
 345                                 wrqu->data.flags = IW_ENCODE_DISABLED;
 346                         }
 347
 348
 349
 350                         break;
 351                 }
 352                 case SIOCGIWRANGE:
 353                 {
 354                         return wlcompat_ioctl_getiwrange(dev, extra);
 355                         break;
 356                 }
 357                 case SIOCSIWMODE:
 358                 {
 359                         int ap = -1, infra = -1, passive = 0, wet = 0;
 360
 361                         switch (wrqu->mode) {
 362                                 case IW_MODE_MONITOR:
 363                                         passive = 1;
 364                                         break;
 365                                 case IW_MODE_ADHOC:
 366                                         infra = 0;
 367                                         ap = 0;
 368                                         break;
 369                                 case IW_MODE_MASTER:
 370                                         infra = 1;
 371                                         ap = 1;
 372                                         break;
 373                                 case IW_MODE_INFRA:
 374                                         infra = 1;
 375                                         ap = 0;
 376                                         break;
 377                                 case IW_MODE_REPEAT:
 378                                         infra = 1;
 379                                         ap = 0;
 380                                         wet = 1;
 381                                         break;
 382                                 default:
 383                                         return -EINVAL;
 384                         }
 385
 386                         if (wl_ioctl(dev, WLC_SET_PASSIVE, &passive, sizeof(passive)) < 0)
 387                                 return -EINVAL;
 388                         if (wl_ioctl(dev, WLC_SET_MONITOR, &passive, sizeof(passive)) < 0)
 389                                 return -EINVAL;
 390                         if (wl_ioctl(dev, WLC_SET_WET, &wet, sizeof(wet)) < 0)
 391                                 return -EINVAL;
 392                         if (ap >= 0)
 393                                 if (wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap)) < 0)
 394                                         return -EINVAL;
 395                         if (infra >= 0)
 396                                 if (wl_ioctl(dev, WLC_SET_INFRA, &infra, sizeof(infra)) < 0)
 397                                         return -EINVAL;
 398
 399                         break;
 400
 401                 }
 402                 case SIOCGIWMODE:
 403                 {
 404                         int ap, infra, wet, passive;
 405
 406                         if (wl_ioctl(dev, WLC_GET_AP, &ap, sizeof(ap)) < 0)
 407                                 return -EINVAL;
 408                         if (wl_ioctl(dev, WLC_GET_INFRA, &infra, sizeof(infra)) < 0)
 409                                 return -EINVAL;
 410                         if (wl_ioctl(dev, WLC_GET_PASSIVE, &passive, sizeof(passive)) < 0)
 411                                 return -EINVAL;
 412                         if (wl_ioctl(dev, WLC_GET_WET, &wet, sizeof(wet)) < 0)
 413                                 return -EINVAL;
 414
 415                         if (passive) {
 416                                 wrqu->mode = IW_MODE_MONITOR;
 417                         } else if (!infra) {
 418                                 wrqu->mode = IW_MODE_ADHOC;
 419                         } else {
 420                                 if (ap) {
 421                                         wrqu->mode = IW_MODE_MASTER;
 422                                 } else {
 423                                         if (wet) {
 424                                                 wrqu->mode = IW_MODE_REPEAT;
 425                                         } else {
 426                                                 wrqu->mode = IW_MODE_INFRA;
 427                                         }
 428                                 }
 429                         }
 430                         break;
 431                 }
 432                 default:
 433                 {
 434                         return -EINVAL;
 435                 }
 436         }
 437
 438         return 0;
 439 }
 440
 441 static const iw_handler  wlcompat_handler[] = {
 442         NULL,                   /* SIOCSIWCOMMIT */
 443         wlcompat_ioctl,         /* SIOCGIWNAME */
 444         NULL,                   /* SIOCSIWNWID */
 445         NULL,                   /* SIOCGIWNWID */
 446         wlcompat_ioctl,         /* SIOCSIWFREQ */
 447         wlcompat_ioctl,         /* SIOCGIWFREQ */
 448         wlcompat_ioctl,         /* SIOCSIWMODE */
 449         wlcompat_ioctl,         /* SIOCGIWMODE */
 450         NULL,                   /* SIOCSIWSENS */
 451         NULL,                   /* SIOCGIWSENS */
 452         NULL,                   /* SIOCSIWRANGE, unused */
 453         wlcompat_ioctl,         /* SIOCGIWRANGE */
 454         NULL,                   /* SIOCSIWPRIV */
 455         NULL,                   /* SIOCGIWPRIV */
 456         NULL,                   /* SIOCSIWSTATS */
 457         NULL,                   /* SIOCGIWSTATS */
 458         iw_handler_set_spy,     /* SIOCSIWSPY */
 459         iw_handler_get_spy,     /* SIOCGIWSPY */
 460         iw_handler_set_thrspy,  /* SIOCSIWTHRSPY */
 461         iw_handler_get_thrspy,  /* SIOCGIWTHRSPY */
 462         NULL,                   /* SIOCSIWAP */
 463         wlcompat_ioctl,         /* SIOCGIWAP */
 464         NULL,                   /* -- hole -- */
 465         NULL,                   /* SIOCGIWAPLIST */
 466         wlcompat_set_scan,      /* SIOCSIWSCAN */
 467         wlcompat_get_scan,      /* SIOCGIWSCAN */
 468         wlcompat_ioctl,         /* SIOCSIWESSID */
 469         wlcompat_ioctl,         /* SIOCGIWESSID */
 470         NULL,                   /* SIOCSIWNICKN */
 471         NULL,                   /* SIOCGIWNICKN */
 472         NULL,                   /* -- hole -- */
 473         NULL,                   /* -- hole -- */
 474         NULL,                   /* SIOCSIWRATE */
 475         NULL,                   /* SIOCGIWRATE */
 476         wlcompat_ioctl,         /* SIOCSIWRTS */
 477         wlcompat_ioctl,         /* SIOCGIWRTS */
 478         wlcompat_ioctl,         /* SIOCSIWFRAG */
 479         wlcompat_ioctl,         /* SIOCGIWFRAG */
 480         wlcompat_ioctl,         /* SIOCSIWTXPOW */
 481         wlcompat_ioctl,         /* SIOCGIWTXPOW */
 482         NULL,                   /* SIOCSIWRETRY */
 483         NULL,                   /* SIOCGIWRETRY */
 484         NULL,                   /* SIOCSIWENCODE */
 485         wlcompat_ioctl,         /* SIOCGIWENCODE */
 486 };
 487
 488 static const struct iw_handler_def      wlcompat_handler_def =
 489 {
 490         .standard       = (iw_handler *) wlcompat_handler,
 491         .num_standard   = sizeof(wlcompat_handler)/sizeof(iw_handler),
 492         .private        = NULL,
 493         .num_private    = 0,
 494         .private_args   = NULL,
 495         .num_private_args = 0,
 496 };
 497
 498 #ifdef DEBUG
 499 static int (*old_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
 500 void print_buffer(int len, unsigned char *buf) {
 501         int x;
 502         if (buf != NULL) {
 503                 for (x=0;x<len && x<180 ;x++) {
 504                         if ((x % 4) == 0)
 505                                 printk(" ");
 506                         printk("%02X",buf[x]);
 507                 }
 508         } else {
 509                 printk(" NULL");
 510         }
 511         printk("\n");
 512
 513 }
 514 static int new_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) {
 515         int ret = 0;
 516         printk("dev: %s ioctl: 0x%04x\n",dev->name,cmd);
 517         if (cmd==SIOCDEVPRIVATE) {
 518                 wl_ioctl_t *ioc = (wl_ioctl_t *)ifr->ifr_data;
 519                 unsigned char *buf = ioc->buf;
 520                 printk("   cmd: %d buf: 0x%08x len: %d\n",ioc->cmd,&(ioc->buf),ioc->len);
 521                 printk("   send: ->");
 522                 print_buffer(ioc->len, buf);
 523                 ret = old_ioctl(dev,ifr,cmd);
 524                 printk("   recv: ->");
 525                 print_buffer(ioc->len, buf);
 526                 printk("   ret: %d\n", ret);
 527         } else {
 528                 ret = old_ioctl(dev,ifr,cmd);
 529         }
 530         return ret;
 531 }
 532 #endif
 533
 534 static int __init wlcompat_init()
 535 {
 536         dev = dev_get_by_name("eth1");
 537 #ifdef DEBUG
 538         old_ioctl = dev->do_ioctl;
 539         dev->do_ioctl = new_ioctl;
 540 #endif
 541         dev->wireless_handlers = (struct iw_handler_def *)&wlcompat_handler_def;
 542         return 0;
 543 }
 544
 545 static void __exit wlcompat_exit()
 546 {
 547         dev->wireless_handlers = NULL;
 548 #ifdef DEBUG
 549         dev->do_ioctl = old_ioctl;
 550 #endif
 551         return;
 552 }
 553
 554 EXPORT_NO_SYMBOLS;
 555 MODULE_AUTHOR("openwrt.org");
 556 MODULE_LICENSE("GPL");
 557
 558 module_init(wlcompat_init);
 559 module_exit(wlcompat_exit);