package/broadcom-wl/src/wlcompat/wlcompat.c

   1 /*
   2  * wlcompat.c
   3  *
   4  * Copyright (C) 2005      Mike Baker
   5  * Copyright (C) 2005-2007 Felix Fietkau <nbd@openwrt.org>
   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/moduleparam.h>
  28 #include <linux/init.h>
  29 #include <linux/if_arp.h>
  30 #include <linux/wireless.h>
  31 #include <linux/timer.h>
  32 #include <linux/delay.h>
  33 #include <linux/random.h>
  34 #include <net/iw_handler.h>
  35 #include <asm/uaccess.h>
  36
  37 #include <typedefs.h>
  38 #include <bcmutils.h>
  39 #include <wlioctl.h>
  40
  41 char buf[WLC_IOCTL_MAXLEN];
  42 static struct net_device *dev;
  43 #ifndef DEBUG
  44 static int random = 1;
  45 #endif
  46 #ifndef WL_WEXT
  47 static struct iw_statistics wstats;
  48 static int last_mode = -1;
  49 static int scan_cur = 0;
  50
  51 /* The frequency of each channel in MHz */
  52 const long channel_frequency[] = {
  53         2412, 2417, 2422, 2427, 2432, 2437, 2442,
  54         2447, 2452, 2457, 2462, 2467, 2472, 2484
  55 };
  56 #define NUM_CHANNELS ( sizeof(channel_frequency) / sizeof(channel_frequency[0]) )
  57 #endif
  58
  59 #define SCAN_RETRY_MAX  5
  60 #define RNG_POLL_FREQ   1
  61
  62 typedef struct internal_wsec_key {
  63         uint8 index;            // 0x00
  64         uint8 unknown_1;        // 0x01
  65         uint8 type;             // 0x02
  66         uint8 unknown_2[7];     // 0x03
  67         uint8 len;              // 0x0a
  68         uint8 pad[3];
  69         char data[32];          // 0x0e
  70 } wkey;
  71
  72
  73 #ifdef DEBUG
  74 void print_buffer(int len, unsigned char *buf);
  75 #endif
  76
  77 static int wl_ioctl(struct net_device *dev, int cmd, void *buf, int len)
  78 {
  79         mm_segment_t old_fs = get_fs();
  80         struct ifreq ifr;
  81         int ret;
  82         wl_ioctl_t ioc;
  83         ioc.cmd = cmd;
  84         ioc.buf = buf;
  85         ioc.len = len;
  86         strncpy(ifr.ifr_name, dev->name, IFNAMSIZ);
  87         ifr.ifr_data = (caddr_t) &ioc;
  88         set_fs(KERNEL_DS);
  89         ret = dev->do_ioctl(dev,&ifr,SIOCDEVPRIVATE);
  90         set_fs (old_fs);
  91         return ret;
  92 }
  93
  94 #if !defined(DEBUG) || !defined(WL_WEXT)
  95 static int
  96 wl_iovar_getbuf(struct net_device *dev, char *iovar, void *param, int paramlen, void *bufptr, int buflen)
  97 {
  98         int err;
  99         uint namelen;
 100         uint iolen;
 101
 102         namelen = strlen(iovar) + 1;     /* length of iovar name plus null */
 103         iolen = namelen + paramlen;
 104
 105         /* check for overflow */
 106         if (iolen > buflen)
 107                 return (BCME_BUFTOOSHORT);
 108
 109         memcpy(bufptr, iovar, namelen); /* copy iovar name including null */
 110         memcpy((int8*)bufptr + namelen, param, paramlen);
 111
 112         err = wl_ioctl(dev, WLC_GET_VAR, bufptr, buflen);
 113
 114         return (err);
 115 }
 116
 117 static int
 118 wl_iovar_setbuf(struct net_device *dev, char *iovar, void *param, int paramlen, void *bufptr, int buflen)
 119 {
 120         uint namelen;
 121         uint iolen;
 122
 123         namelen = strlen(iovar) + 1;     /* length of iovar name plus null */
 124         iolen = namelen + paramlen;
 125
 126         /* check for overflow */
 127         if (iolen > buflen)
 128                 return (BCME_BUFTOOSHORT);
 129
 130         memcpy(bufptr, iovar, namelen); /* copy iovar name including null */
 131         memcpy((int8*)bufptr + namelen, param, paramlen);
 132
 133         return wl_ioctl(dev, WLC_SET_VAR, bufptr, iolen);
 134 }
 135
 136 static int
 137 wl_iovar_set(struct net_device *dev, char *iovar, void *param, int paramlen)
 138 {
 139         char smbuf[WLC_IOCTL_SMLEN];
 140
 141         return wl_iovar_setbuf(dev, iovar, param, paramlen, smbuf, sizeof(smbuf));
 142 }
 143
 144 static int
 145 wl_iovar_get(struct net_device *dev, char *iovar, void *bufptr, int buflen)
 146 {
 147         char smbuf[WLC_IOCTL_SMLEN];
 148         int ret;
 149
 150         /* use the return buffer if it is bigger than what we have on the stack */
 151         if (buflen > sizeof(smbuf)) {
 152                 ret = wl_iovar_getbuf(dev, iovar, NULL, 0, bufptr, buflen);
 153         } else {
 154                 ret = wl_iovar_getbuf(dev, iovar, NULL, 0, smbuf, sizeof(smbuf));
 155                 if (ret == 0)
 156                         memcpy(bufptr, smbuf, buflen);
 157         }
 158
 159         return ret;
 160 }
 161
 162 #ifdef notyet
 163 /*
 164  * format a bsscfg indexed iovar buffer
 165  */
 166 static int
 167 wl_bssiovar_mkbuf(char *iovar, int bssidx, void *param, int paramlen, void *bufptr, int buflen,
 168                   int *plen)
 169 {
 170         char *prefix = "bsscfg:";
 171         int8* p;
 172         uint prefixlen;
 173         uint namelen;
 174         uint iolen;
 175
 176         prefixlen = strlen(prefix);     /* length of bsscfg prefix */
 177         namelen = strlen(iovar) + 1;    /* length of iovar name + null */
 178         iolen = prefixlen + namelen + sizeof(int) + paramlen;
 179
 180         /* check for overflow */
 181         if (buflen < 0 || iolen > (uint)buflen) {
 182                 *plen = 0;
 183                 return BCME_BUFTOOSHORT;
 184         }
 185
 186         p = (int8*)bufptr;
 187
 188         /* copy prefix, no null */
 189         memcpy(p, prefix, prefixlen);
 190         p += prefixlen;
 191
 192         /* copy iovar name including null */
 193         memcpy(p, iovar, namelen);
 194         p += namelen;
 195
 196         /* bss config index as first param */
 197         memcpy(p, &bssidx, sizeof(int32));
 198         p += sizeof(int32);
 199
 200         /* parameter buffer follows */
 201         if (paramlen)
 202                 memcpy(p, param, paramlen);
 203
 204         *plen = iolen;
 205         return 0;
 206 }
 207
 208 /*
 209  * set named & bss indexed driver variable to buffer value
 210  */
 211 static int
 212 wl_bssiovar_setbuf(struct net_device *dev, char *iovar, int bssidx, void *param, int paramlen, void *bufptr,
 213                    int buflen)
 214 {
 215         int err;
 216         int iolen;
 217
 218         err = wl_bssiovar_mkbuf(iovar, bssidx, param, paramlen, bufptr, buflen, &iolen);
 219         if (err)
 220                 return err;
 221
 222         return wl_ioctl(dev, WLC_SET_VAR, bufptr, iolen);
 223 }
 224
 225 /*
 226  * get named & bss indexed driver variable buffer value
 227  */
 228 static int
 229 wl_bssiovar_getbuf(struct net_device *dev, char *iovar, int bssidx, void *param, int paramlen, void *bufptr,
 230                    int buflen)
 231 {
 232         int err;
 233         int iolen;
 234
 235         err = wl_bssiovar_mkbuf(iovar, bssidx, param, paramlen, bufptr, buflen, &iolen);
 236         if (err)
 237                 return err;
 238
 239         return wl_ioctl(dev, WLC_GET_VAR, bufptr, buflen);
 240 }
 241
 242 /*
 243  * set named & bss indexed driver variable to buffer value
 244  */
 245 static int
 246 wl_bssiovar_set(struct net_device *dev, char *iovar, int bssidx, void *param, int paramlen)
 247 {
 248         char smbuf[WLC_IOCTL_SMLEN];
 249
 250         return wl_bssiovar_setbuf(dev, iovar, bssidx, param, paramlen, smbuf, sizeof(smbuf));
 251 }
 252
 253 /*
 254  * get named & bss indexed driver variable buffer value
 255  */
 256 static int
 257 wl_bssiovar_get(struct net_device *dev, char *iovar, int bssidx, void *outbuf, int len)
 258 {
 259         char smbuf[WLC_IOCTL_SMLEN];
 260         int err;
 261
 262         /* use the return buffer if it is bigger than what we have on the stack */
 263         if (len > (int)sizeof(smbuf)) {
 264                 err = wl_bssiovar_getbuf(dev, iovar, bssidx, NULL, 0, outbuf, len);
 265         } else {
 266                 memset(smbuf, 0, sizeof(smbuf));
 267                 err = wl_bssiovar_getbuf(dev, iovar, bssidx, NULL, 0, smbuf, sizeof(smbuf));
 268                 if (err == 0)
 269                         memcpy(outbuf, smbuf, len);
 270         }
 271
 272         return err;
 273 }
 274 #endif
 275 #endif
 276
 277 #ifndef WL_WEXT
 278
 279 int get_primary_key(struct net_device *dev)
 280 {
 281         int key, val;
 282
 283         for (key = val = 0; (key < 4) && (val == 0); key++) {
 284                 val = key;
 285                 if (wl_ioctl(dev, WLC_GET_KEY_PRIMARY, &val, sizeof(val)) < 0)
 286                         return -EINVAL;
 287         }
 288         return key;
 289 }
 290
 291
 292 static int wlcompat_ioctl_getiwrange(struct net_device *dev,
 293                                     char *extra)
 294 {
 295         int i, k;
 296         struct iw_range *range;
 297
 298         range = (struct iw_range *) extra;
 299         memset(extra, 0, sizeof(struct iw_range));
 300
 301         range->we_version_compiled = WIRELESS_EXT;
 302         range->we_version_source = WIRELESS_EXT;
 303
 304         range->min_nwid = range->max_nwid = 0;
 305
 306         range->num_channels = NUM_CHANNELS;
 307         k = 0;
 308         for (i = 0; i < NUM_CHANNELS; i++) {
 309                 range->freq[k].i = i + 1;
 310                 range->freq[k].m = channel_frequency[i] * 100000;
 311                 range->freq[k].e = 1;
 312                 k++;
 313                 if (k >= IW_MAX_FREQUENCIES)
 314                         break;
 315         }
 316         range->num_frequency = k;
 317         range->sensitivity = 3;
 318
 319         /* nbd: don't know what this means, but other drivers set it this way */
 320         range->pmp_flags = IW_POWER_PERIOD;
 321         range->pmt_flags = IW_POWER_TIMEOUT;
 322         range->pm_capa = IW_POWER_PERIOD | IW_POWER_TIMEOUT | IW_POWER_UNICAST_R;
 323
 324         range->min_pmp = 0;
 325         range->max_pmp = 65535000;
 326         range->min_pmt = 0;
 327         range->max_pmt = 65535 * 1000;
 328
 329         range->max_qual.qual = 0;
 330         range->max_qual.level = 0;
 331         range->max_qual.noise = 0;
 332
 333         range->min_rts = 0;
 334         if (wl_iovar_get(dev, "rtsthresh", &range->max_rts, sizeof(int)) < 0)
 335                 range->max_rts = 2347;
 336
 337         range->min_frag = 256;
 338
 339         if (wl_iovar_get(dev, "fragthresh", &range->max_frag, sizeof(int)) < 0)
 340                 range->max_frag = 2346;
 341
 342         range->txpower_capa = IW_TXPOW_DBM;
 343
 344         return 0;
 345 }
 346
 347
 348 static int wlcompat_set_scan(struct net_device *dev,
 349                          struct iw_request_info *info,
 350                          union iwreq_data *wrqu,
 351                          char *extra)
 352 {
 353         int ap = 0;
 354         wl_scan_params_t params;
 355
 356         memset(&params, 0, sizeof(params));
 357
 358         /* use defaults (same parameters as wl scan) */
 359         memset(&params.bssid, 0xff, sizeof(params.bssid));
 360         params.bss_type = DOT11_BSSTYPE_ANY;
 361         params.scan_type = -1;
 362         params.nprobes = -1;
 363         params.active_time = -1;
 364         params.passive_time = -1;
 365         params.home_time = -1;
 366
 367         /* can only scan in STA mode */
 368         wl_ioctl(dev, WLC_GET_AP, &last_mode, sizeof(last_mode));
 369         if (last_mode > 0) {
 370                 /* switch to ap mode, scan result query will switch back */
 371                 wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap));
 372
 373                 /* wait 250 msec after mode change */
 374                 set_current_state(TASK_INTERRUPTIBLE);
 375                 schedule_timeout(msecs_to_jiffies(250));
 376         }
 377
 378         scan_cur = SCAN_RETRY_MAX;
 379         while (scan_cur-- && (wl_ioctl(dev, WLC_SCAN, &params, 64) < 0)) {
 380                 /* sometimes the driver takes a few tries... */
 381                 set_current_state(TASK_INTERRUPTIBLE);
 382                 schedule_timeout(msecs_to_jiffies(250));
 383         }
 384
 385         if (!scan_cur)
 386                 return -EINVAL;
 387
 388         scan_cur = 0;
 389
 390         /* wait at least 2 seconds for results */
 391         set_current_state(TASK_INTERRUPTIBLE);
 392         schedule_timeout(msecs_to_jiffies(2000));
 393
 394         return 0;
 395 }
 396
 397
 398 struct iw_statistics *wlcompat_get_wireless_stats(struct net_device *dev)
 399 {
 400         struct wl_bss_info *bss_info = (struct wl_bss_info *) buf;
 401         get_pktcnt_t pkt;
 402         unsigned int rssi, noise, ap;
 403
 404         memset(&wstats, 0, sizeof(wstats));
 405         memset(&pkt, 0, sizeof(pkt));
 406         memset(buf, 0, sizeof(buf));
 407         bss_info->version = 0x2000;
 408         wl_ioctl(dev, WLC_GET_BSS_INFO, bss_info, WLC_IOCTL_MAXLEN);
 409         wl_ioctl(dev, WLC_GET_PKTCNTS, &pkt, sizeof(pkt));
 410
 411         rssi = 0;
 412         if ((wl_ioctl(dev, WLC_GET_AP, &ap, sizeof(ap)) < 0) || ap) {
 413                 if (wl_ioctl(dev, WLC_GET_PHY_NOISE, &noise, sizeof(noise)) < 0)
 414                         noise = 0;
 415         } else {
 416                 // somehow the structure doesn't fit here
 417                 rssi = buf[82];
 418                 noise = buf[84];
 419         }
 420         rssi = (rssi == 0 ? 1 : rssi);
 421         wstats.qual.updated = 0x10;
 422         if (rssi <= 1)
 423                 wstats.qual.updated |= 0x20;
 424         if (noise <= 1)
 425                 wstats.qual.updated |= 0x40;
 426
 427         if ((wstats.qual.updated & 0x60) == 0x60)
 428                 return NULL;
 429
 430         wstats.qual.level = rssi;
 431         wstats.qual.noise = noise;
 432         wstats.discard.misc = pkt.rx_bad_pkt;
 433         wstats.discard.retries = pkt.tx_bad_pkt;
 434
 435         return &wstats;
 436 }
 437
 438 static int wlcompat_get_scan(struct net_device *dev,
 439                          struct iw_request_info *info,
 440                          union iwreq_data *wrqu,
 441                          char *extra)
 442 {
 443         wl_scan_results_t *results = (wl_scan_results_t *) buf;
 444         wl_bss_info_t *bss_info;
 445         char *info_ptr;
 446         char *current_ev = extra;
 447         char *current_val;
 448         char *end_buf = extra + IW_SCAN_MAX_DATA;
 449         struct iw_event iwe;
 450         int i, j;
 451         int rssi, noise;
 452
 453         memset(buf, 0, WLC_IOCTL_MAXLEN);
 454         results->buflen = WLC_IOCTL_MAXLEN - sizeof(wl_scan_results_t);
 455
 456         if (wl_ioctl(dev, WLC_SCAN_RESULTS, buf, WLC_IOCTL_MAXLEN) < 0)
 457                 return -EAGAIN;
 458
 459         if ((results->count <= 0) && (scan_cur++ < SCAN_RETRY_MAX))
 460                 return -EAGAIN;
 461
 462         bss_info = &(results->bss_info[0]);
 463         info_ptr = (char *) bss_info;
 464         for (i = 0; i < results->count; i++) {
 465                 /* send the cell address (must be sent first) */
 466                 iwe.cmd = SIOCGIWAP;
 467                 iwe.u.ap_addr.sa_family = ARPHRD_ETHER;
 468                 memcpy(&iwe.u.ap_addr.sa_data, &bss_info->BSSID, sizeof(bss_info->BSSID));
 469                 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_ADDR_LEN);
 470
 471                 /* send the ESSID */
 472                 iwe.cmd = SIOCGIWESSID;
 473                 iwe.u.data.length = bss_info->SSID_len;
 474                 if (iwe.u.data.length > IW_ESSID_MAX_SIZE)
 475                         iwe.u.data.length = IW_ESSID_MAX_SIZE;
 476                 iwe.u.data.flags = 1;
 477                 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, bss_info->SSID);
 478
 479                 /* send mode */
 480                 if  (bss_info->capability & (DOT11_CAP_ESS | DOT11_CAP_IBSS)) {
 481                         iwe.cmd = SIOCGIWMODE;
 482                         if (bss_info->capability & DOT11_CAP_ESS)
 483                                 iwe.u.mode = IW_MODE_MASTER;
 484                         else if (bss_info->capability & DOT11_CAP_IBSS)
 485                                 iwe.u.mode = IW_MODE_ADHOC;
 486                         current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_UINT_LEN);
 487                 }
 488
 489                 /* send frequency/channel info */
 490                 iwe.cmd = SIOCGIWFREQ;
 491                 iwe.u.freq.e = 0;
 492                 iwe.u.freq.m = bss_info->chanspec & WL_CHANSPEC_CHAN_MASK;
 493                 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_FREQ_LEN);
 494
 495                 /* add quality statistics */
 496                 iwe.cmd = IWEVQUAL;
 497                 iwe.u.qual.qual = 0;
 498                 iwe.u.qual.level = bss_info->RSSI;
 499                 iwe.u.qual.noise = bss_info->phy_noise;
 500                 current_ev = iwe_stream_add_event(current_ev, end_buf, &iwe, IW_EV_QUAL_LEN);
 501
 502                 /* send encryption capability */
 503                 iwe.cmd = SIOCGIWENCODE;
 504                 iwe.u.data.pointer = NULL;
 505                 iwe.u.data.length = 0;
 506                 if (bss_info->capability & DOT11_CAP_PRIVACY)
 507                         iwe.u.data.flags = IW_ENCODE_ENABLED | IW_ENCODE_NOKEY;
 508                 else
 509                         iwe.u.data.flags = IW_ENCODE_DISABLED;
 510                 current_ev = iwe_stream_add_point(current_ev, end_buf, &iwe, NULL);
 511
 512                 /* send rate information */
 513                 iwe.cmd = SIOCGIWRATE;
 514                 current_val = current_ev + IW_EV_LCP_LEN;
 515                 iwe.u.bitrate.fixed = iwe.u.bitrate.disabled = 0;
 516
 517                 for(j = 0 ; j < bss_info->rateset.count ; j++) {
 518                         iwe.u.bitrate.value = ((bss_info->rateset.rates[j] & 0x7f) * 500000);
 519                         current_val = iwe_stream_add_value(current_ev, current_val, end_buf, &iwe, IW_EV_PARAM_LEN);
 520                 }
 521                 if((current_val - current_ev) > IW_EV_LCP_LEN)
 522                         current_ev = current_val;
 523
 524                 info_ptr += sizeof(wl_bss_info_t);
 525                 if (bss_info->ie_length % 4)
 526                         info_ptr += bss_info->ie_length + 4 - (bss_info->ie_length % 4);
 527                 else
 528                         info_ptr += bss_info->ie_length;
 529                 bss_info = (wl_bss_info_t *) info_ptr;
 530         }
 531
 532         wrqu->data.length = (current_ev - extra);
 533         wrqu->data.flags = 0;
 534
 535         if (last_mode > 0)
 536                 /* switch back to ap mode */
 537                 wl_ioctl(dev, WLC_SET_AP, &last_mode, sizeof(last_mode));
 538
 539         return 0;
 540 }
 541
 542 static int wlcompat_ioctl(struct net_device *dev,
 543                          struct iw_request_info *info,
 544                          union iwreq_data *wrqu,
 545                          char *extra)
 546 {
 547         switch (info->cmd) {
 548                 case SIOCGIWNAME:
 549                         strcpy(wrqu->name, "IEEE 802.11-DS");
 550                         break;
 551                 case SIOCGIWFREQ:
 552                 {
 553                         channel_info_t ci;
 554
 555                         if (wl_ioctl(dev,WLC_GET_CHANNEL, &ci, sizeof(ci)) < 0)
 556                                 return -EINVAL;
 557
 558                         wrqu->freq.m = ci.target_channel;
 559                         wrqu->freq.e = 0;
 560                         break;
 561                 }
 562                 case SIOCSIWFREQ:
 563                 {
 564                         if (wrqu->freq.m == -1) {
 565                                 wrqu->freq.m = 0;
 566                                 if (wl_ioctl(dev, WLC_SET_CHANNEL, &wrqu->freq.m, sizeof(int)) < 0)
 567                                         return -EINVAL;
 568                         } else {
 569                                 if (wrqu->freq.e == 1) {
 570                                         int channel = 0;
 571                                         int f = wrqu->freq.m / 100000;
 572                                         while ((channel < NUM_CHANNELS + 1) && (f != channel_frequency[channel]))
 573                                                 channel++;
 574
 575                                         if (channel == NUM_CHANNELS) // channel not found
 576                                                 return -EINVAL;
 577
 578                                         wrqu->freq.e = 0;
 579                                         wrqu->freq.m = channel + 1;
 580                                 }
 581                                 if ((wrqu->freq.e == 0) && (wrqu->freq.m < 1000)) {
 582                                         if (wl_ioctl(dev, WLC_SET_CHANNEL, &wrqu->freq.m, sizeof(int)) < 0)
 583                                                 return -EINVAL;
 584                                 } else {
 585                                         return -EINVAL;
 586                                 }
 587                         }
 588                         break;
 589                 }
 590                 case SIOCSIWAP:
 591                 {
 592                         int ap = 0;
 593                         int infra = 0;
 594                         rw_reg_t reg;
 595
 596                         memset(&reg, 0, sizeof(reg));
 597
 598                         if (wrqu->ap_addr.sa_family != ARPHRD_ETHER)
 599                                 return -EINVAL;
 600
 601                         if (wl_ioctl(dev, WLC_GET_AP, &ap, sizeof(ap)) < 0)
 602                                 return -EINVAL;
 603
 604                         if (wl_ioctl(dev, WLC_GET_INFRA, &infra, sizeof(infra)) < 0)
 605                                 return -EINVAL;
 606
 607                         if (!infra)
 608                                 wl_ioctl(dev, WLC_SET_BSSID, wrqu->ap_addr.sa_data, 6);
 609
 610                         if (wl_ioctl(dev, ((ap || !infra) ? WLC_SET_BSSID : WLC_REASSOC), wrqu->ap_addr.sa_data, 6) < 0)
 611                                 return -EINVAL;
 612
 613                         break;
 614                 }
 615                 case SIOCGIWAP:
 616                 {
 617                         wrqu->ap_addr.sa_family = ARPHRD_ETHER;
 618                         if (wl_ioctl(dev,WLC_GET_BSSID,wrqu->ap_addr.sa_data,6) < 0)
 619                                 return -EINVAL;
 620                         break;
 621                 }
 622                 case SIOCGIWESSID:
 623                 {
 624                         wlc_ssid_t ssid;
 625
 626                         if (wl_ioctl(dev,WLC_GET_SSID, &ssid, sizeof(wlc_ssid_t)) < 0)
 627                                 return -EINVAL;
 628
 629                         wrqu->essid.flags = wrqu->data.flags = 1;
 630                         wrqu->essid.length = wrqu->data.length = ssid.SSID_len + 1;
 631                         memcpy(extra,ssid.SSID,ssid.SSID_len + 1);
 632                         break;
 633                 }
 634                 case SIOCSIWESSID:
 635                 {
 636                         wlc_ssid_t ssid;
 637                         memset(&ssid, 0, sizeof(ssid));
 638                         ssid.SSID_len = strlen(extra);
 639                         if (ssid.SSID_len > 32)
 640                                 ssid.SSID_len = 32;
 641                         memcpy(ssid.SSID, extra, ssid.SSID_len);
 642                         if (wl_ioctl(dev, WLC_SET_SSID, &ssid, sizeof(ssid)) < 0)
 643                                 return -EINVAL;
 644                         break;
 645                 }
 646                 case SIOCGIWRTS:
 647                 {
 648                         if (wl_iovar_get(dev, "rtsthresh", &(wrqu->rts.value), sizeof(int)) < 0)
 649                                 return -EINVAL;
 650                         break;
 651                 }
 652                 case SIOCSIWRTS:
 653                 {
 654                         if (wl_iovar_set(dev, "rtsthresh", &(wrqu->rts.value), sizeof(int)) < 0)
 655                                 return -EINVAL;
 656                         break;
 657                 }
 658                 case SIOCGIWFRAG:
 659                 {
 660                         if (wl_iovar_get(dev, "fragthresh", &(wrqu->frag.value), sizeof(int)) < 0)
 661                                 return -EINVAL;
 662                         break;
 663                 }
 664                 case SIOCSIWFRAG:
 665                 {
 666                         if (wl_iovar_set(dev, "fragthresh", &(wrqu->frag.value), sizeof(int)) < 0)
 667                                 return -EINVAL;
 668                         break;
 669                 }
 670                 case SIOCGIWTXPOW:
 671                 {
 672                         int radio, override;
 673
 674                         wl_ioctl(dev, WLC_GET_RADIO, &radio, sizeof(int));
 675
 676                         if (wl_iovar_get(dev, "qtxpower", &(wrqu->txpower.value), sizeof(int)) < 0)
 677                                 return -EINVAL;
 678
 679                         override = (wrqu->txpower.value & WL_TXPWR_OVERRIDE) == WL_TXPWR_OVERRIDE;
 680                         wrqu->txpower.value &= ~WL_TXPWR_OVERRIDE;
 681                         if (!override && (wrqu->txpower.value > 76))
 682                                 wrqu->txpower.value = 76;
 683                         wrqu->txpower.value /= 4;
 684
 685                         wrqu->txpower.fixed = 0;
 686                         wrqu->txpower.disabled = radio;
 687                         wrqu->txpower.flags = IW_TXPOW_DBM;
 688                         break;
 689                 }
 690                 case SIOCSIWTXPOW:
 691                 {
 692                         /* This is weird: WLC_SET_RADIO with 1 as argument disables the radio */
 693                         int radio = wrqu->txpower.disabled;
 694
 695                         wl_ioctl(dev, WLC_SET_RADIO, &radio, sizeof(int));
 696
 697                         if (!wrqu->txpower.disabled && (wrqu->txpower.value > 0)) {
 698                                 int value;
 699
 700                                 if (wl_iovar_get(dev, "qtxpower", &value, sizeof(int)) < 0)
 701                                         return -EINVAL;
 702
 703                                 value &= WL_TXPWR_OVERRIDE;
 704                                 wrqu->txpower.value *= 4;
 705                                 wrqu->txpower.value |= value;
 706
 707                                 if (wrqu->txpower.flags != IW_TXPOW_DBM)
 708                                         return -EINVAL;
 709
 710                                 if (wrqu->txpower.value > 0)
 711                                         if (wl_iovar_set(dev, "qtxpower", &(wrqu->txpower.value), sizeof(int)) < 0)
 712                                                 return -EINVAL;
 713                         }
 714                         break;
 715                 }
 716                 case SIOCSIWENCODE:
 717                 {
 718                         int val = 0, wep = 1, wrestrict = 1;
 719                         int index = (wrqu->data.flags & IW_ENCODE_INDEX) - 1;
 720
 721                         if (index < 0)
 722                                 index = get_primary_key(dev);
 723
 724                         if (wrqu->data.flags & IW_ENCODE_DISABLED) {
 725                                 wep = 0;
 726                                 if (wl_ioctl(dev, WLC_SET_WSEC, &wep, sizeof(val)) < 0)
 727                                         return -EINVAL;
 728                                 return 0;
 729                         }
 730
 731                         if (wl_ioctl(dev, WLC_SET_WSEC, &wep, sizeof(val)) < 0)
 732                                 return -EINVAL;
 733
 734                         if (wrqu->data.flags & IW_ENCODE_OPEN)
 735                                 wrestrict = 0;
 736
 737                         if (wrqu->data.pointer && (wrqu->data.length > 0) && (wrqu->data.length <= 16)) {
 738                                 wl_wsec_key_t key;
 739                                 memset(&key, 0, sizeof(key));
 740
 741                                 key.flags = WL_PRIMARY_KEY;
 742                                 key.len = wrqu->data.length;
 743                                 key.index = index;
 744                                 memcpy(key.data, wrqu->data.pointer, wrqu->data.length);
 745
 746                                 if (wl_ioctl(dev, WLC_SET_KEY, &key, sizeof(key)) < 0)
 747                                         return -EINVAL;
 748                         }
 749
 750                         if (index >= 0)
 751                                 wl_ioctl(dev, WLC_SET_KEY_PRIMARY, &index, sizeof(index));
 752
 753                         if (wrestrict >= 0)
 754                                 wl_ioctl(dev, WLC_SET_WEP_RESTRICT, &wrestrict, sizeof(wrestrict));
 755
 756                         break;
 757                 }
 758                 case SIOCGIWENCODE:
 759                 {
 760                         int val;
 761                         int key = get_primary_key(dev);
 762                         int *info_addr;
 763                         wkey *wep_key;
 764
 765                         if (wl_ioctl(dev, WLC_GET_WSEC, &val, sizeof(val)) < 0)
 766                                 return -EINVAL;
 767                         if (!(val & WEP_ENABLED)) {
 768                                 wrqu->data.flags = IW_ENCODE_DISABLED;
 769                                 break;
 770                         }
 771
 772                         key = get_primary_key(dev);
 773                         wrqu->data.flags = IW_ENCODE_ENABLED;
 774
 775                         /* the driver apparently doesn't allow us to read the wep key */
 776                         wrqu->data.flags |= IW_ENCODE_NOKEY;
 777
 778                         break;
 779                 }
 780                 case SIOCGIWRANGE:
 781                 {
 782                         return wlcompat_ioctl_getiwrange(dev, extra);
 783                         break;
 784                 }
 785                 case SIOCSIWMODE:
 786                 {
 787                         int ap = -1, infra = -1, passive = 0, wet = 0;
 788
 789                         wl_ioctl(dev, WLC_GET_WET, &wet, sizeof(wet));
 790                         switch (wrqu->mode) {
 791                                 case IW_MODE_MONITOR:
 792                                         passive = 1;
 793                                         break;
 794                                 case IW_MODE_ADHOC:
 795                                         infra = 0;
 796                                         ap = 0;
 797                                         break;
 798                                 case IW_MODE_MASTER:
 799                                         infra = 1;
 800                                         ap = 1;
 801                                         break;
 802                                 case IW_MODE_INFRA:
 803                                         infra = 1;
 804                                         ap = 0;
 805                                         wet = 0;
 806                                         break;
 807                                 case IW_MODE_REPEAT:
 808                                         infra = 1;
 809                                         ap = 0;
 810                                         wet = 1;
 811                                         break;
 812                                 default:
 813                                         return -EINVAL;
 814                         }
 815
 816                         wl_ioctl(dev, WLC_SET_PASSIVE, &passive, sizeof(passive));
 817                         wl_ioctl(dev, WLC_SET_MONITOR, &passive, sizeof(passive));
 818                         if ((ap == 0) && (infra == 1))
 819                                 wl_ioctl(dev, WLC_SET_WET, &wet, sizeof(wet));
 820                         if (ap >= 0)
 821                                 wl_ioctl(dev, WLC_SET_AP, &ap, sizeof(ap));
 822                         if (infra >= 0)
 823                                 wl_ioctl(dev, WLC_SET_INFRA, &infra, sizeof(infra));
 824
 825                         break;
 826                 }
 827                 case SIOCGIWMODE:
 828                 {
 829                         int ap, infra, wet, passive;
 830
 831                         if (wl_ioctl(dev, WLC_GET_AP, &ap, sizeof(ap)) < 0)
 832                                 return -EINVAL;
 833                         if (wl_ioctl(dev, WLC_GET_INFRA, &infra, sizeof(infra)) < 0)
 834                                 return -EINVAL;
 835                         if (wl_ioctl(dev, WLC_GET_PASSIVE, &passive, sizeof(passive)) < 0)
 836                                 return -EINVAL;
 837
 838                         if (passive) {
 839                                 wrqu->mode = IW_MODE_MONITOR;
 840                         } else if (!infra) {
 841                                 wrqu->mode = IW_MODE_ADHOC;
 842                         } else {
 843                                 if (ap) {
 844                                         wrqu->mode = IW_MODE_MASTER;
 845                                 } else {
 846                                         wrqu->mode = IW_MODE_INFRA;
 847                                 }
 848                         }
 849                         break;
 850                 }
 851                 default:
 852                         return -EINVAL;
 853                         break;
 854         }
 855
 856         return 0;
 857 }
 858
 859 static const iw_handler  wlcompat_handler[] = {
 860         NULL,                   /* SIOCSIWCOMMIT */
 861         wlcompat_ioctl,         /* SIOCGIWNAME */
 862         NULL,                   /* SIOCSIWNWID */
 863         NULL,                   /* SIOCGIWNWID */
 864         wlcompat_ioctl,         /* SIOCSIWFREQ */
 865         wlcompat_ioctl,         /* SIOCGIWFREQ */
 866         wlcompat_ioctl,         /* SIOCSIWMODE */
 867         wlcompat_ioctl,         /* SIOCGIWMODE */
 868         NULL,                   /* SIOCSIWSENS */
 869         NULL,                   /* SIOCGIWSENS */
 870         NULL,                   /* SIOCSIWRANGE, unused */
 871         wlcompat_ioctl,         /* SIOCGIWRANGE */
 872         NULL,                   /* SIOCSIWPRIV */
 873         NULL,                   /* SIOCGIWPRIV */
 874         NULL,                   /* SIOCSIWSTATS */
 875         NULL,                   /* SIOCGIWSTATS */
 876         iw_handler_set_spy,     /* SIOCSIWSPY */
 877         iw_handler_get_spy,     /* SIOCGIWSPY */
 878         iw_handler_set_thrspy,  /* SIOCSIWTHRSPY */
 879         iw_handler_get_thrspy,  /* SIOCGIWTHRSPY */
 880         wlcompat_ioctl,         /* SIOCSIWAP */
 881         wlcompat_ioctl,         /* SIOCGIWAP */
 882         NULL,                   /* -- hole -- */
 883         NULL,                   /* SIOCGIWAPLIST */
 884         wlcompat_set_scan,      /* SIOCSIWSCAN */
 885         wlcompat_get_scan,      /* SIOCGIWSCAN */
 886         wlcompat_ioctl,         /* SIOCSIWESSID */
 887         wlcompat_ioctl,         /* SIOCGIWESSID */
 888         NULL,                   /* SIOCSIWNICKN */
 889         NULL,                   /* SIOCGIWNICKN */
 890         NULL,                   /* -- hole -- */
 891         NULL,                   /* -- hole -- */
 892         NULL,                   /* SIOCSIWRATE */
 893         NULL,                   /* SIOCGIWRATE */
 894         wlcompat_ioctl,         /* SIOCSIWRTS */
 895         wlcompat_ioctl,         /* SIOCGIWRTS */
 896         wlcompat_ioctl,         /* SIOCSIWFRAG */
 897         wlcompat_ioctl,         /* SIOCGIWFRAG */
 898         wlcompat_ioctl,         /* SIOCSIWTXPOW */
 899         wlcompat_ioctl,         /* SIOCGIWTXPOW */
 900         NULL,                   /* SIOCSIWRETRY */
 901         NULL,                   /* SIOCGIWRETRY */
 902         wlcompat_ioctl,         /* SIOCSIWENCODE */
 903         wlcompat_ioctl,         /* SIOCGIWENCODE */
 904 };
 905
 906
 907 static const struct iw_handler_def wlcompat_handler_def =
 908 {
 909         .standard       = (iw_handler *) wlcompat_handler,
 910         .num_standard   = sizeof(wlcompat_handler)/sizeof(iw_handler),
 911 };
 912
 913 #endif
 914
 915 #ifdef DEBUG
 916 void print_buffer(int len, unsigned char *buf) {
 917         int x;
 918         if (buf != NULL) {
 919                 for (x=0;x<len && x<180 ;x++) {
 920                         if ((x % 4) == 0)
 921                                 printk(" ");
 922                         printk("%02X",buf[x]);
 923                 }
 924         } else {
 925                 printk(" NULL");
 926         }
 927         printk("\n");
 928
 929 }
 930 #endif
 931 static int (*old_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
 932 static int new_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) {
 933         int ret = 0;
 934
 935 #ifdef DEBUG
 936         printk("dev: %s ioctl: 0x%04x\n",dev->name,cmd);
 937         if (cmd==SIOCDEVPRIVATE) {
 938                 wl_ioctl_t *ioc = (wl_ioctl_t *)ifr->ifr_data;
 939                 unsigned char *buf = ioc->buf;
 940                 printk("   cmd: %d buf: 0x%08x len: %d\n",ioc->cmd,&(ioc->buf),ioc->len);
 941                 printk("   send: ->");
 942                 print_buffer(ioc->len, buf);
 943                 ret = old_ioctl(dev,ifr,cmd);
 944                 printk("   recv: ->");
 945                 print_buffer(ioc->len, buf);
 946                 printk("   ret: %d\n", ret);
 947         } else
 948 #endif
 949         {
 950                 ret = old_ioctl(dev,ifr,cmd);
 951         }
 952         return ret;
 953 }
 954
 955 #ifndef DEBUG
 956 static struct timer_list rng_timer;
 957 static spinlock_t rng_lock = SPIN_LOCK_UNLOCKED;
 958
 959 static void rng_timer_tick(unsigned long n)
 960 {
 961         struct net_device *dev = (struct net_device *) n;
 962         unsigned long flags;
 963         u16 data[4];
 964         int i, ret;
 965
 966         ret = 0;
 967         spin_lock_irqsave(&rng_lock, flags);
 968         for (i = 0; i < 3; i++) {
 969                 ret |= wl_iovar_get(dev, "rand", &data[i], sizeof(u16));
 970         }
 971         spin_unlock_irqrestore(&rng_lock, flags);
 972
 973         if (!ret)
 974                 batch_entropy_store(*((u32 *) &data[0]), *((u32 *) &data[2]), (jiffies % 255));
 975
 976         mod_timer(&rng_timer, jiffies + (HZ/RNG_POLL_FREQ));
 977 }
 978 #endif
 979
 980 static int __init wlcompat_init()
 981 {
 982         int found = 0, i;
 983         char devname[4] = "wl0";
 984
 985         while (!found && (dev = dev_get_by_name(devname))) {
 986                 if ((wl_ioctl(dev, WLC_GET_MAGIC, &i, sizeof(i)) == 0) && (i == WLC_IOCTL_MAGIC))
 987                         found = 1;
 988                 devname[2]++;
 989         }
 990
 991
 992         if (!found) {
 993                 printk("No Broadcom devices found.\n");
 994                 return -ENODEV;
 995         }
 996
 997         old_ioctl = dev->do_ioctl;
 998         dev->do_ioctl = new_ioctl;
 999 #ifndef WL_WEXT
1000         dev->wireless_handlers = (struct iw_handler_def *)&wlcompat_handler_def;
1001         dev->get_wireless_stats = wlcompat_get_wireless_stats;
1002 #endif
1003
1004 #ifndef DEBUG
1005         if (random) {
1006                 init_timer(&rng_timer);
1007                 rng_timer.function = rng_timer_tick;
1008                 rng_timer.data = (unsigned long) dev;
1009                 rng_timer_tick((unsigned long) dev);
1010         }
1011 #endif
1012
1013 #ifdef DEBUG
1014         printk("broadcom driver private data: 0x%08x\n", dev->priv);
1015 #endif
1016         return 0;
1017 }
1018
1019 static void __exit wlcompat_exit()
1020 {
1021 #ifndef DEBUG
1022         if (random)
1023                 del_timer(&rng_timer);
1024 #endif
1025 #ifndef WL_WEXT
1026         dev->get_wireless_stats = NULL;
1027         dev->wireless_handlers = NULL;
1028 #endif
1029         dev->do_ioctl = old_ioctl;
1030         return;
1031 }
1032
1033 EXPORT_NO_SYMBOLS;
1034 MODULE_AUTHOR("openwrt.org");
1035 MODULE_LICENSE("GPL");
1036
1037 #ifndef DEBUG
1038 module_param(random, int, 0);
1039 #endif
1040 module_init(wlcompat_init);
1041 module_exit(wlcompat_exit);