drivers/staging/vt6655/80211mgr.c

   1 /*
   2  * Copyright (c) 1996, 2003 VIA Networking Technologies, Inc.
   3  * All rights reserved.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program; if not, write to the Free Software Foundation, Inc.,
  17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * File: 80211mgr.c
  20  *
  21  * Purpose: Handles the 802.11 management support functions
  22  *
  23  * Author: Lyndon Chen
  24  *
  25  * Date: May 8, 2002
  26  *
  27  * Functions:
  28  *      vMgrEncodeBeacon - Encode the Beacon frame
  29  *      vMgrDecodeBeacon - Decode the Beacon frame
  30  *      vMgrEncodeIBSSATIM - Encode the IBSS ATIM frame
  31  *      vMgrDecodeIBSSATIM - Decode the IBSS ATIM frame
  32  *      vMgrEncodeDisassociation - Encode the Disassociation frame
  33  *      vMgrDecodeDisassociation - Decode the Disassociation frame
  34  *      vMgrEncodeAssocRequest - Encode the Association request frame
  35  *      vMgrDecodeAssocRequest - Decode the Association request frame
  36  *      vMgrEncodeAssocResponse - Encode the Association response frame
  37  *      vMgrDecodeAssocResponse - Decode the Association response frame
  38  *      vMgrEncodeReAssocRequest - Encode the ReAssociation request frame
  39  *      vMgrDecodeReAssocRequest - Decode the ReAssociation request frame
  40  *      vMgrEncodeProbeRequest - Encode the Probe request frame
  41  *      vMgrDecodeProbeRequest - Decode the Probe request frame
  42  *      vMgrEncodeProbeResponse - Encode the Probe response frame
  43  *      vMgrDecodeProbeResponse - Decode the Probe response frame
  44  *      vMgrEncodeAuthen - Encode the Authentication frame
  45  *      vMgrDecodeAuthen - Decode the Authentication frame
  46  *      vMgrEncodeDeauthen - Encode the DeAuthentication frame
  47  *      vMgrDecodeDeauthen - Decode the DeAuthentication frame
  48  *      vMgrEncodeReassocResponse - Encode the Reassociation response frame
  49  *      vMgrDecodeReassocResponse - Decode the Reassociation response frame
  50  *
  51  * Revision History:
  52  *
  53  */
  54
  55 #include "tmacro.h"
  56 #include "tether.h"
  57 #include "80211mgr.h"
  58 #include "80211hdr.h"
  59 #include "device.h"
  60 #include "wpa.h"
  61
  62 /*---------------------  Static Definitions -------------------------*/
  63
  64 /*---------------------  Static Classes  ----------------------------*/
  65
  66 /*---------------------  Static Variables  --------------------------*/
  67
  68 static int msglevel = MSG_LEVEL_INFO;
  69 /* static int          msglevel                =MSG_LEVEL_DEBUG; */
  70 /*---------------------  Static Functions  --------------------------*/
  71
  72 /*---------------------  Export Variables  --------------------------*/
  73
  74 /*---------------------  Export Functions  --------------------------*/
  75
  76 /*+
  77  *
  78  * Routine Description:
  79  * Encode Beacon frame body offset
  80  *
  81  * Return Value:
  82  *    None.
  83  *
  84  -*/
  85
  86 void
  87 vMgrEncodeBeacon(
  88         PWLAN_FR_BEACON  pFrame
  89 )
  90 {
  91         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
  92
  93         /* Fixed Fields */
  94         pFrame->pqwTimestamp = (PQWORD)
  95                                 (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
  96                                  WLAN_BEACON_OFF_TS);
  97         pFrame->pwBeaconInterval = (unsigned short *)
  98                                 (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
  99                                  WLAN_BEACON_OFF_BCN_INT);
 100         pFrame->pwCapInfo = (unsigned short *)
 101                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 102                              WLAN_BEACON_OFF_CAPINFO);
 103
 104         pFrame->len = WLAN_HDR_ADDR3_LEN + WLAN_BEACON_OFF_SSID;
 105
 106         return;
 107 }
 108
 109 /*+
 110  *
 111  * Routine Description:
 112  * Decode Beacon frame body offset
 113  *
 114  *
 115  * Return Value:
 116  *    None.
 117  *
 118  -*/
 119
 120 void
 121 vMgrDecodeBeacon(
 122         PWLAN_FR_BEACON  pFrame
 123 )
 124 {
 125         PWLAN_IE        pItem;
 126
 127         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 128
 129         /* Fixed Fields */
 130         pFrame->pqwTimestamp = (PQWORD)
 131                                 (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 132                                  WLAN_BEACON_OFF_TS);
 133         pFrame->pwBeaconInterval = (unsigned short *)
 134                                    (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 135                                     WLAN_BEACON_OFF_BCN_INT);
 136         pFrame->pwCapInfo = (unsigned short *)
 137                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 138                              WLAN_BEACON_OFF_CAPINFO);
 139
 140         /* Information elements */
 141         pItem = (PWLAN_IE)((unsigned char *)
 142                            (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3))) +
 143                             WLAN_BEACON_OFF_SSID);
 144         while (((unsigned char *)pItem) < (pFrame->pBuf + pFrame->len)) {
 145                 switch (pItem->byElementID) {
 146                 case WLAN_EID_SSID:
 147                         if (pFrame->pSSID == NULL)
 148                                 pFrame->pSSID = (PWLAN_IE_SSID)pItem;
 149                         break;
 150                 case WLAN_EID_SUPP_RATES:
 151                         if (pFrame->pSuppRates == NULL)
 152                                 pFrame->pSuppRates = (PWLAN_IE_SUPP_RATES)pItem;
 153                         break;
 154                 case WLAN_EID_FH_PARMS:
 155                         /* pFrame->pFHParms = (PWLAN_IE_FH_PARMS)pItem; */
 156                         break;
 157                 case WLAN_EID_DS_PARMS:
 158                         if (pFrame->pDSParms == NULL)
 159                                 pFrame->pDSParms = (PWLAN_IE_DS_PARMS)pItem;
 160                         break;
 161                 case WLAN_EID_CF_PARMS:
 162                         if (pFrame->pCFParms == NULL)
 163                                 pFrame->pCFParms = (PWLAN_IE_CF_PARMS)pItem;
 164                         break;
 165                 case WLAN_EID_IBSS_PARMS:
 166                         if (pFrame->pIBSSParms == NULL)
 167                                 pFrame->pIBSSParms = (PWLAN_IE_IBSS_PARMS)pItem;
 168                         break;
 169                 case WLAN_EID_TIM:
 170                         if (pFrame->pTIM == NULL)
 171                                 pFrame->pTIM = (PWLAN_IE_TIM)pItem;
 172                         break;
 173
 174                 case WLAN_EID_RSN:
 175                         if (pFrame->pRSN == NULL)
 176                                 pFrame->pRSN = (PWLAN_IE_RSN)pItem;
 177                         break;
 178                 case WLAN_EID_RSN_WPA:
 179                         if (pFrame->pRSNWPA == NULL) {
 180                                 if (WPAb_Is_RSN((PWLAN_IE_RSN_EXT)pItem) == true)
 181                                         pFrame->pRSNWPA =
 182                                                        (PWLAN_IE_RSN_EXT)pItem;
 183                         }
 184                         break;
 185
 186                 case WLAN_EID_ERP:
 187                         if (pFrame->pERP == NULL)
 188                                 pFrame->pERP = (PWLAN_IE_ERP)pItem;
 189                         break;
 190                 case WLAN_EID_EXTSUPP_RATES:
 191                         if (pFrame->pExtSuppRates == NULL)
 192                                 pFrame->pExtSuppRates =
 193                                                     (PWLAN_IE_SUPP_RATES)pItem;
 194                         break;
 195
 196                 case WLAN_EID_COUNTRY:      /* 7 */
 197                         if (pFrame->pIE_Country == NULL)
 198                                 pFrame->pIE_Country = (PWLAN_IE_COUNTRY)pItem;
 199                         break;
 200
 201                 case WLAN_EID_PWR_CONSTRAINT:   /* 32 */
 202                         if (pFrame->pIE_PowerConstraint == NULL)
 203                                 pFrame->pIE_PowerConstraint =
 204                                                       (PWLAN_IE_PW_CONST)pItem;
 205                         break;
 206
 207                 case WLAN_EID_CH_SWITCH:    /* 37 */
 208                         if (pFrame->pIE_CHSW == NULL)
 209                                 pFrame->pIE_CHSW = (PWLAN_IE_CH_SW)pItem;
 210                         break;
 211
 212                 case WLAN_EID_QUIET:        /* 40 */
 213                         if (pFrame->pIE_Quiet == NULL)
 214                                 pFrame->pIE_Quiet = (PWLAN_IE_QUIET)pItem;
 215                         break;
 216
 217                 case WLAN_EID_IBSS_DFS:
 218                         if (pFrame->pIE_IBSSDFS == NULL)
 219                                 pFrame->pIE_IBSSDFS = (PWLAN_IE_IBSS_DFS)pItem;
 220                         break;
 221
 222                 default:
 223                         DBG_PRT(MSG_LEVEL_DEBUG,
 224                                 KERN_INFO "Unrecognized EID=%dd in beacon decode.\n",
 225                                 pItem->byElementID);
 226                         break;
 227
 228                 }
 229                 pItem = (PWLAN_IE)(((unsigned char *)pItem) + 2 + pItem->len);
 230         }
 231
 232         return;
 233 }
 234
 235 /*+
 236  *
 237  * Routine Description:
 238  *  Encode IBSS ATIM
 239  *
 240  *
 241  * Return Value:
 242  *    None.
 243  *
 244  -*/
 245
 246 void
 247 vMgrEncodeIBSSATIM(
 248         PWLAN_FR_IBSSATIM   pFrame
 249 )
 250 {
 251         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 252         pFrame->len = WLAN_HDR_ADDR3_LEN;
 253
 254         return;
 255 }
 256
 257 /*+
 258  *
 259  * Routine Description:
 260  *  Decode IBSS ATIM
 261  *
 262  *
 263  * Return Value:
 264  *    None.
 265  *
 266  -*/
 267
 268 void
 269 vMgrDecodeIBSSATIM(
 270         PWLAN_FR_IBSSATIM   pFrame
 271 )
 272 {
 273         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 274
 275         return;
 276 }
 277
 278 /*+
 279  *
 280  * Routine Description:
 281  *  Encode Disassociation
 282  *
 283  *
 284  * Return Value:
 285  *    None.
 286  *
 287  -*/
 288
 289 void
 290 vMgrEncodeDisassociation(
 291         PWLAN_FR_DISASSOC  pFrame
 292 )
 293 {
 294         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 295
 296         /* Fixed Fields */
 297         pFrame->pwReason = (unsigned short *)
 298                            (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 299                             WLAN_DISASSOC_OFF_REASON);
 300         pFrame->len = WLAN_HDR_ADDR3_LEN + WLAN_DISASSOC_OFF_REASON +
 301                       sizeof(*(pFrame->pwReason));
 302
 303         return;
 304 }
 305
 306 /*+
 307  *
 308  * Routine Description:
 309  *  Decode Disassociation
 310  *
 311  *
 312  * Return Value:
 313  *    None.
 314  *
 315  -*/
 316
 317 void
 318 vMgrDecodeDisassociation(
 319         PWLAN_FR_DISASSOC  pFrame
 320 )
 321 {
 322         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 323
 324         /* Fixed Fields */
 325         pFrame->pwReason = (unsigned short *)
 326                            (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 327                             WLAN_DISASSOC_OFF_REASON);
 328
 329         return;
 330 }
 331
 332 /*+
 333  *
 334  * Routine Description:
 335  *  Encode Association Request
 336  *
 337  *
 338  * Return Value:
 339  *    None.
 340  *
 341  -*/
 342
 343 void
 344 vMgrEncodeAssocRequest(
 345         PWLAN_FR_ASSOCREQ  pFrame
 346 )
 347 {
 348         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 349         /* Fixed Fields */
 350         pFrame->pwCapInfo = (unsigned short *)
 351                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 352                              WLAN_ASSOCREQ_OFF_CAP_INFO);
 353         pFrame->pwListenInterval = (unsigned short *)
 354                                    (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 355                                     WLAN_ASSOCREQ_OFF_LISTEN_INT);
 356         pFrame->len = WLAN_HDR_ADDR3_LEN + WLAN_ASSOCREQ_OFF_LISTEN_INT +
 357                       sizeof(*(pFrame->pwListenInterval));
 358         return;
 359 }
 360
 361 /*+
 362  *
 363  * Routine Description: (AP)
 364  *  Decode Association Request
 365  *
 366  *
 367  * Return Value:
 368  *    None.
 369  *
 370  -*/
 371
 372 void
 373 vMgrDecodeAssocRequest(
 374         PWLAN_FR_ASSOCREQ  pFrame
 375 )
 376 {
 377         PWLAN_IE   pItem;
 378
 379         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 380         /* Fixed Fields */
 381         pFrame->pwCapInfo = (unsigned short *)
 382                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 383                              WLAN_ASSOCREQ_OFF_CAP_INFO);
 384         pFrame->pwListenInterval = (unsigned short *)
 385                                    (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 386                                     WLAN_ASSOCREQ_OFF_LISTEN_INT);
 387
 388         /* Information elements */
 389         pItem = (PWLAN_IE)(WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3))
 390                            + WLAN_ASSOCREQ_OFF_SSID);
 391
 392         while (((unsigned char *)pItem) < (pFrame->pBuf + pFrame->len)) {
 393                 switch (pItem->byElementID) {
 394                 case WLAN_EID_SSID:
 395                         if (pFrame->pSSID == NULL)
 396                                 pFrame->pSSID = (PWLAN_IE_SSID)pItem;
 397                         break;
 398                 case WLAN_EID_SUPP_RATES:
 399                         if (pFrame->pSuppRates == NULL)
 400                                 pFrame->pSuppRates =
 401                                                    (PWLAN_IE_SUPP_RATES)pItem;
 402                         break;
 403
 404                 case WLAN_EID_RSN:
 405                         if (pFrame->pRSN == NULL)
 406                                 pFrame->pRSN = (PWLAN_IE_RSN)pItem;
 407                         break;
 408                 case WLAN_EID_RSN_WPA:
 409                         if (pFrame->pRSNWPA == NULL) {
 410                                 if (WPAb_Is_RSN((PWLAN_IE_RSN_EXT)pItem) == true)
 411                                         pFrame->pRSNWPA =
 412                                                        (PWLAN_IE_RSN_EXT)pItem;
 413                         }
 414                         break;
 415                 case WLAN_EID_EXTSUPP_RATES:
 416                         if (pFrame->pExtSuppRates == NULL)
 417                                 pFrame->pExtSuppRates =
 418                                                     (PWLAN_IE_SUPP_RATES)pItem;
 419                         break;
 420
 421                 default:
 422                         DBG_PRT(MSG_LEVEL_DEBUG,
 423                                 KERN_INFO "Unrecognized EID=%dd in assocreq decode.\n",
 424                                 pItem->byElementID);
 425                         break;
 426                 }
 427                 pItem = (PWLAN_IE)(((unsigned char *)pItem) + 2 + pItem->len);
 428         }
 429         return;
 430 }
 431
 432 /*+
 433  *
 434  * Routine Description: (AP)
 435  *  Encode Association Response
 436  *
 437  *
 438  * Return Value:
 439  *    None.
 440  *
 441  -*/
 442
 443 void
 444 vMgrEncodeAssocResponse(
 445         PWLAN_FR_ASSOCRESP  pFrame
 446 )
 447 {
 448         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 449
 450         /* Fixed Fields */
 451         pFrame->pwCapInfo = (unsigned short *)
 452                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 453                              WLAN_ASSOCRESP_OFF_CAP_INFO);
 454         pFrame->pwStatus = (unsigned short *)
 455                            (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 456                             WLAN_ASSOCRESP_OFF_STATUS);
 457         pFrame->pwAid = (unsigned short *)
 458                         (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 459                          WLAN_ASSOCRESP_OFF_AID);
 460         pFrame->len = WLAN_HDR_ADDR3_LEN + WLAN_ASSOCRESP_OFF_AID +
 461                       sizeof(*(pFrame->pwAid));
 462
 463         return;
 464 }
 465
 466 /*+
 467  *
 468  * Routine Description:
 469  *  Decode Association Response
 470  *
 471  *
 472  * Return Value:
 473  *    None.
 474  *
 475  -*/
 476
 477 void
 478 vMgrDecodeAssocResponse(
 479         PWLAN_FR_ASSOCRESP  pFrame
 480 )
 481 {
 482         PWLAN_IE   pItem;
 483
 484         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 485
 486         /* Fixed Fields */
 487         pFrame->pwCapInfo = (unsigned short *)
 488                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 489                              WLAN_ASSOCRESP_OFF_CAP_INFO);
 490         pFrame->pwStatus = (unsigned short *)
 491                            (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 492                             WLAN_ASSOCRESP_OFF_STATUS);
 493         pFrame->pwAid = (unsigned short *)
 494                         (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 495                          WLAN_ASSOCRESP_OFF_AID);
 496
 497         /* Information elements */
 498         pFrame->pSuppRates  = (PWLAN_IE_SUPP_RATES)
 499                               (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 500                                WLAN_ASSOCRESP_OFF_SUPP_RATES);
 501
 502         pItem = (PWLAN_IE)(pFrame->pSuppRates);
 503         pItem = (PWLAN_IE)(((unsigned char *)pItem) + 2 + pItem->len);
 504
 505         if ((((unsigned char *)pItem) < (pFrame->pBuf + pFrame->len)) &&
 506             (pItem->byElementID == WLAN_EID_EXTSUPP_RATES)) {
 507                 pFrame->pExtSuppRates = (PWLAN_IE_SUPP_RATES)pItem;
 508                 DBG_PRT(MSG_LEVEL_DEBUG,
 509                         KERN_INFO "pFrame->pExtSuppRates=[%p].\n",
 510                         pItem);
 511         } else {
 512                 pFrame->pExtSuppRates = NULL;
 513         }
 514         return;
 515 }
 516
 517 /*+
 518  *
 519  * Routine Description:
 520  *  Encode Reassociation Request
 521  *
 522  *
 523  * Return Value:
 524  *    None.
 525  *
 526  -*/
 527
 528 void
 529 vMgrEncodeReassocRequest(
 530         PWLAN_FR_REASSOCREQ  pFrame
 531 )
 532 {
 533         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 534
 535         /* Fixed Fields */
 536         pFrame->pwCapInfo = (unsigned short *)
 537                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 538                              WLAN_REASSOCREQ_OFF_CAP_INFO);
 539         pFrame->pwListenInterval = (unsigned short *)
 540                                    (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 541                                     WLAN_REASSOCREQ_OFF_LISTEN_INT);
 542         pFrame->pAddrCurrAP = (PIEEE_ADDR)
 543                               (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 544                                WLAN_REASSOCREQ_OFF_CURR_AP);
 545         pFrame->len = WLAN_HDR_ADDR3_LEN + WLAN_REASSOCREQ_OFF_CURR_AP +
 546                       sizeof(*(pFrame->pAddrCurrAP));
 547
 548         return;
 549 }
 550
 551 /*+
 552  *
 553  * Routine Description: (AP)
 554  *  Decode Reassociation Request
 555  *
 556  *
 557  * Return Value:
 558  *    None.
 559  *
 560  -*/
 561
 562 void
 563 vMgrDecodeReassocRequest(
 564         PWLAN_FR_REASSOCREQ  pFrame
 565 )
 566 {
 567         PWLAN_IE   pItem;
 568         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 569
 570         /* Fixed Fields */
 571         pFrame->pwCapInfo = (unsigned short *)
 572                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 573                              WLAN_REASSOCREQ_OFF_CAP_INFO);
 574         pFrame->pwListenInterval = (unsigned short *)
 575                                    (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 576                                     WLAN_REASSOCREQ_OFF_LISTEN_INT);
 577         pFrame->pAddrCurrAP = (PIEEE_ADDR)
 578                               (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 579                                WLAN_REASSOCREQ_OFF_CURR_AP);
 580
 581         /* Information elements */
 582         pItem = (PWLAN_IE)(WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3))
 583                            + WLAN_REASSOCREQ_OFF_SSID);
 584
 585         while (((unsigned char *)pItem) < (pFrame->pBuf + pFrame->len)) {
 586                 switch (pItem->byElementID) {
 587                 case WLAN_EID_SSID:
 588                         if (pFrame->pSSID == NULL)
 589                                 pFrame->pSSID = (PWLAN_IE_SSID)pItem;
 590                         break;
 591                 case WLAN_EID_SUPP_RATES:
 592                         if (pFrame->pSuppRates == NULL)
 593                                 pFrame->pSuppRates =
 594                                                     (PWLAN_IE_SUPP_RATES)pItem;
 595                         break;
 596
 597                 case WLAN_EID_RSN:
 598                         if (pFrame->pRSN == NULL)
 599                                 pFrame->pRSN = (PWLAN_IE_RSN)pItem;
 600                         break;
 601                 case WLAN_EID_RSN_WPA:
 602                         if (pFrame->pRSNWPA == NULL) {
 603                                 if (WPAb_Is_RSN((PWLAN_IE_RSN_EXT)pItem) == true)
 604                                         pFrame->pRSNWPA =
 605                                                        (PWLAN_IE_RSN_EXT)pItem;
 606                         }
 607                         break;
 608
 609                 case WLAN_EID_EXTSUPP_RATES:
 610                         if (pFrame->pExtSuppRates == NULL)
 611                                 pFrame->pExtSuppRates =
 612                                                     (PWLAN_IE_SUPP_RATES)pItem;
 613                         break;
 614                 default:
 615                         DBG_PRT(MSG_LEVEL_DEBUG,
 616                                 KERN_INFO "Unrecognized EID=%dd in reassocreq decode.\n",
 617                                 pItem->byElementID);
 618                         break;
 619                 }
 620                 pItem = (PWLAN_IE)(((unsigned char *)pItem) + 2 + pItem->len);
 621         }
 622         return;
 623 }
 624
 625 /*+
 626  *
 627  * Routine Description:
 628  *  Encode Probe Request
 629  *
 630  *
 631  * Return Value:
 632  *    None.
 633  *
 634  -*/
 635
 636 void
 637 vMgrEncodeProbeRequest(
 638         PWLAN_FR_PROBEREQ  pFrame
 639 )
 640 {
 641         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 642         pFrame->len = WLAN_HDR_ADDR3_LEN;
 643         return;
 644 }
 645
 646 /*+
 647  *
 648  * Routine Description:
 649  *  Decode Probe Request
 650  *
 651  *
 652  * Return Value:
 653  *    None.
 654  *
 655  -*/
 656
 657 void
 658 vMgrDecodeProbeRequest(
 659         PWLAN_FR_PROBEREQ  pFrame
 660 )
 661 {
 662         PWLAN_IE   pItem;
 663
 664         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 665
 666         /* Information elements */
 667         pItem = (PWLAN_IE)(WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)));
 668
 669         while (((unsigned char *)pItem) < (pFrame->pBuf + pFrame->len)) {
 670                 switch (pItem->byElementID) {
 671                 case WLAN_EID_SSID:
 672                         if (pFrame->pSSID == NULL)
 673                                 pFrame->pSSID = (PWLAN_IE_SSID)pItem;
 674                         break;
 675
 676                 case WLAN_EID_SUPP_RATES:
 677                         if (pFrame->pSuppRates == NULL)
 678                                 pFrame->pSuppRates =
 679                                                    (PWLAN_IE_SUPP_RATES)pItem;
 680                         break;
 681
 682                 case WLAN_EID_EXTSUPP_RATES:
 683                         if (pFrame->pExtSuppRates == NULL)
 684                                 pFrame->pExtSuppRates =
 685                                                     (PWLAN_IE_SUPP_RATES)pItem;
 686                         break;
 687
 688                 default:
 689                         DBG_PRT(MSG_LEVEL_DEBUG,
 690                                 KERN_INFO "Bad EID=%dd in probereq\n",
 691                                 pItem->byElementID);
 692                         break;
 693                 }
 694
 695                 pItem = (PWLAN_IE)(((unsigned char *)pItem) + 2 +  pItem->len);
 696         }
 697         return;
 698 }
 699
 700 /*+
 701  *
 702  * Routine Description:
 703  *  Encode Probe Response
 704  *
 705  *
 706  * Return Value:
 707  *    None.
 708  *
 709  -*/
 710
 711 void
 712 vMgrEncodeProbeResponse(
 713         PWLAN_FR_PROBERESP  pFrame
 714 )
 715 {
 716         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 717
 718         /* Fixed Fields */
 719         pFrame->pqwTimestamp = (PQWORD)
 720                                (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 721                                 WLAN_PROBERESP_OFF_TS);
 722         pFrame->pwBeaconInterval = (unsigned short *)
 723                                    (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 724                                     WLAN_PROBERESP_OFF_BCN_INT);
 725         pFrame->pwCapInfo = (unsigned short *)
 726                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 727                              WLAN_PROBERESP_OFF_CAP_INFO);
 728
 729         pFrame->len = WLAN_HDR_ADDR3_LEN + WLAN_PROBERESP_OFF_CAP_INFO +
 730                       sizeof(*(pFrame->pwCapInfo));
 731
 732         return;
 733 }
 734
 735 /*+
 736  *
 737  * Routine Description:
 738  *  Decode Probe Response
 739  *
 740  *
 741  * Return Value:
 742  *    None.
 743  *
 744  -*/
 745
 746 void
 747 vMgrDecodeProbeResponse(
 748         PWLAN_FR_PROBERESP  pFrame
 749 )
 750 {
 751         PWLAN_IE    pItem;
 752
 753         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 754
 755         /* Fixed Fields */
 756         pFrame->pqwTimestamp = (PQWORD)
 757                                (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 758                                 WLAN_PROBERESP_OFF_TS);
 759         pFrame->pwBeaconInterval = (unsigned short *)
 760                                    (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 761                                     WLAN_PROBERESP_OFF_BCN_INT);
 762         pFrame->pwCapInfo = (unsigned short *)
 763                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 764                              WLAN_PROBERESP_OFF_CAP_INFO);
 765
 766         /* Information elements */
 767         pItem = (PWLAN_IE)(WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3))
 768                            + WLAN_PROBERESP_OFF_SSID);
 769
 770         while (((unsigned char *)pItem) < (pFrame->pBuf + pFrame->len)) {
 771                 switch (pItem->byElementID) {
 772                 case WLAN_EID_SSID:
 773                         if (pFrame->pSSID == NULL)
 774                                 pFrame->pSSID = (PWLAN_IE_SSID)pItem;
 775                         break;
 776                 case WLAN_EID_SUPP_RATES:
 777                         if (pFrame->pSuppRates == NULL)
 778                                 pFrame->pSuppRates =
 779                                                    (PWLAN_IE_SUPP_RATES)pItem;
 780                         break;
 781                 case WLAN_EID_FH_PARMS:
 782                         break;
 783                 case WLAN_EID_DS_PARMS:
 784                         if (pFrame->pDSParms == NULL)
 785                                 pFrame->pDSParms = (PWLAN_IE_DS_PARMS)pItem;
 786                         break;
 787                 case WLAN_EID_CF_PARMS:
 788                         if (pFrame->pCFParms == NULL)
 789                                 pFrame->pCFParms = (PWLAN_IE_CF_PARMS)pItem;
 790                         break;
 791                 case WLAN_EID_IBSS_PARMS:
 792                         if (pFrame->pIBSSParms == NULL)
 793                                 pFrame->pIBSSParms =
 794                                                    (PWLAN_IE_IBSS_PARMS)pItem;
 795                         break;
 796
 797                 case WLAN_EID_RSN:
 798                         if (pFrame->pRSN == NULL)
 799                                 pFrame->pRSN = (PWLAN_IE_RSN)pItem;
 800                         break;
 801                 case WLAN_EID_RSN_WPA:
 802                         if (pFrame->pRSNWPA == NULL) {
 803                                 if (WPAb_Is_RSN((PWLAN_IE_RSN_EXT)pItem) == true)
 804                                         pFrame->pRSNWPA =
 805                                                        (PWLAN_IE_RSN_EXT)pItem;
 806                         }
 807                         break;
 808                 case WLAN_EID_ERP:
 809                         if (pFrame->pERP == NULL)
 810                                 pFrame->pERP = (PWLAN_IE_ERP)pItem;
 811                         break;
 812                 case WLAN_EID_EXTSUPP_RATES:
 813                         if (pFrame->pExtSuppRates == NULL)
 814                                 pFrame->pExtSuppRates =
 815                                                     (PWLAN_IE_SUPP_RATES)pItem;
 816                         break;
 817
 818                 case WLAN_EID_COUNTRY:      /* 7 */
 819                         if (pFrame->pIE_Country == NULL)
 820                                 pFrame->pIE_Country = (PWLAN_IE_COUNTRY)pItem;
 821                         break;
 822
 823                 case WLAN_EID_PWR_CONSTRAINT:   /* 32 */
 824                         if (pFrame->pIE_PowerConstraint == NULL)
 825                                 pFrame->pIE_PowerConstraint =
 826                                                       (PWLAN_IE_PW_CONST)pItem;
 827                         break;
 828
 829                 case WLAN_EID_CH_SWITCH:    /* 37 */
 830                         if (pFrame->pIE_CHSW == NULL)
 831                                 pFrame->pIE_CHSW = (PWLAN_IE_CH_SW)pItem;
 832                         break;
 833
 834                 case WLAN_EID_QUIET:        /* 40 */
 835                         if (pFrame->pIE_Quiet == NULL)
 836                                 pFrame->pIE_Quiet = (PWLAN_IE_QUIET)pItem;
 837                         break;
 838
 839                 case WLAN_EID_IBSS_DFS:
 840                         if (pFrame->pIE_IBSSDFS == NULL)
 841                                 pFrame->pIE_IBSSDFS = (PWLAN_IE_IBSS_DFS)pItem;
 842                         break;
 843
 844                 default:
 845                         DBG_PRT(MSG_LEVEL_DEBUG,
 846                                 KERN_INFO "Bad EID=%dd in proberesp\n",
 847                                 pItem->byElementID);
 848                         break;
 849                 }
 850
 851                 pItem = (PWLAN_IE)(((unsigned char *)pItem) + 2 +  pItem->len);
 852         }
 853         return;
 854 }
 855
 856 /*+
 857  *
 858  * Routine Description:
 859  *     Encode Authentication frame
 860  *
 861  *
 862  * Return Value:
 863  *    None.
 864  *
 865  -*/
 866
 867 void
 868 vMgrEncodeAuthen(
 869         PWLAN_FR_AUTHEN  pFrame
 870 )
 871 {
 872         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 873
 874         /* Fixed Fields */
 875         pFrame->pwAuthAlgorithm = (unsigned short *)
 876                                   (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 877                                    WLAN_AUTHEN_OFF_AUTH_ALG);
 878         pFrame->pwAuthSequence = (unsigned short *)
 879                                  (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 880                                   WLAN_AUTHEN_OFF_AUTH_SEQ);
 881         pFrame->pwStatus = (unsigned short *)
 882                            (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 883                             WLAN_AUTHEN_OFF_STATUS);
 884         pFrame->len = WLAN_HDR_ADDR3_LEN + WLAN_AUTHEN_OFF_STATUS +
 885                       sizeof(*(pFrame->pwStatus));
 886
 887         return;
 888 }
 889
 890 /*+
 891  *
 892  * Routine Description:
 893  *   Decode Authentication
 894  *
 895  *
 896  * Return Value:
 897  *    None.
 898  *
 899  -*/
 900
 901 void
 902 vMgrDecodeAuthen(
 903         PWLAN_FR_AUTHEN  pFrame
 904 )
 905 {
 906         PWLAN_IE    pItem;
 907
 908         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 909
 910         /* Fixed Fields */
 911         pFrame->pwAuthAlgorithm = (unsigned short *)
 912                                   (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 913                                    WLAN_AUTHEN_OFF_AUTH_ALG);
 914         pFrame->pwAuthSequence = (unsigned short *)
 915                                  (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 916                                   WLAN_AUTHEN_OFF_AUTH_SEQ);
 917         pFrame->pwStatus = (unsigned short *)
 918                            (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 919                             WLAN_AUTHEN_OFF_STATUS);
 920
 921         /* Information elements */
 922         pItem = (PWLAN_IE)(WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3))
 923                            + WLAN_AUTHEN_OFF_CHALLENGE);
 924
 925         if (((unsigned char *)pItem) < (pFrame->pBuf + pFrame->len) &&
 926             pItem->byElementID == WLAN_EID_CHALLENGE)
 927                 pFrame->pChallenge = (PWLAN_IE_CHALLENGE)pItem;
 928
 929         return;
 930 }
 931
 932 /*+
 933  *
 934  * Routine Description:
 935  *   Encode Authentication
 936  *
 937  *
 938  * Return Value:
 939  *    None.
 940  *
 941  -*/
 942
 943 void
 944 vMgrEncodeDeauthen(
 945         PWLAN_FR_DEAUTHEN  pFrame
 946 )
 947 {
 948         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 949
 950         /* Fixed Fields */
 951         pFrame->pwReason = (unsigned short *)
 952                            (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 953                             WLAN_DEAUTHEN_OFF_REASON);
 954         pFrame->len = WLAN_HDR_ADDR3_LEN + WLAN_DEAUTHEN_OFF_REASON +
 955                       sizeof(*(pFrame->pwReason));
 956
 957         return;
 958 }
 959
 960 /*+
 961  *
 962  * Routine Description:
 963  *   Decode Deauthentication
 964  *
 965  *
 966  * Return Value:
 967  *    None.
 968  *
 969  -*/
 970
 971 void
 972 vMgrDecodeDeauthen(
 973         PWLAN_FR_DEAUTHEN  pFrame
 974 )
 975 {
 976         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
 977
 978         /* Fixed Fields */
 979         pFrame->pwReason = (unsigned short *)
 980                            (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
 981                             WLAN_DEAUTHEN_OFF_REASON);
 982
 983         return;
 984 }
 985
 986 /*+
 987  *
 988  * Routine Description: (AP)
 989  *   Encode Reassociation Response
 990  *
 991  *
 992  * Return Value:
 993  *    None.
 994  *
 995  -*/
 996
 997 void
 998 vMgrEncodeReassocResponse(
 999         PWLAN_FR_REASSOCRESP  pFrame
1000 )
1001 {
1002         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
1003
1004         /* Fixed Fields */
1005         pFrame->pwCapInfo = (unsigned short *)
1006                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
1007                              WLAN_REASSOCRESP_OFF_CAP_INFO);
1008         pFrame->pwStatus = (unsigned short *)
1009                            (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
1010                             WLAN_REASSOCRESP_OFF_STATUS);
1011         pFrame->pwAid = (unsigned short *)
1012                         (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
1013                          WLAN_REASSOCRESP_OFF_AID);
1014
1015         pFrame->len = WLAN_HDR_ADDR3_LEN + WLAN_REASSOCRESP_OFF_AID +
1016                       sizeof(*(pFrame->pwAid));
1017
1018         return;
1019 }
1020
1021 /*+
1022  *
1023  * Routine Description:
1024  *   Decode Reassociation Response
1025  *
1026  *
1027  * Return Value:
1028  *    None.
1029  *
1030  -*/
1031
1032 void
1033 vMgrDecodeReassocResponse(
1034         PWLAN_FR_REASSOCRESP  pFrame
1035 )
1036 {
1037         PWLAN_IE   pItem;
1038
1039         pFrame->pHdr = (PUWLAN_80211HDR)pFrame->pBuf;
1040
1041         /* Fixed Fields */
1042         pFrame->pwCapInfo = (unsigned short *)
1043                             (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
1044                              WLAN_REASSOCRESP_OFF_CAP_INFO);
1045         pFrame->pwStatus = (unsigned short *)
1046                            (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
1047                             WLAN_REASSOCRESP_OFF_STATUS);
1048         pFrame->pwAid = (unsigned short *)
1049                         (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
1050                          WLAN_REASSOCRESP_OFF_AID);
1051
1052         /* Information elements */
1053         pFrame->pSuppRates = (PWLAN_IE_SUPP_RATES)
1054                              (WLAN_HDR_A3_DATA_PTR(&(pFrame->pHdr->sA3)) +
1055                               WLAN_REASSOCRESP_OFF_SUPP_RATES);
1056
1057         pItem = (PWLAN_IE)(pFrame->pSuppRates);
1058         pItem = (PWLAN_IE)(((unsigned char *)pItem) + 2 + pItem->len);
1059
1060         if ((((unsigned char *)pItem) < (pFrame->pBuf + pFrame->len)) &&
1061             (pItem->byElementID == WLAN_EID_EXTSUPP_RATES)) {
1062                 pFrame->pExtSuppRates = (PWLAN_IE_SUPP_RATES)pItem;
1063         }
1064         return;
1065 }