package/openwrt/wlcompat.c

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