drivers/staging/rtl8723bs/core/rtw_recv.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /******************************************************************************
   3  *
   4  * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved.
   5  *
   6  ******************************************************************************/
   7 #include <drv_types.h>
   8 #include <rtw_debug.h>
   9 #include <linux/jiffies.h>
  10 #include <rtw_recv.h>
  11 #include <net/cfg80211.h>
  12 #include <asm/unaligned.h>
  13
  14 static u8 SNAP_ETH_TYPE_IPX[2] = {0x81, 0x37};
  15 static u8 SNAP_ETH_TYPE_APPLETALK_AARP[2] = {0x80, 0xf3};
  16
  17 static void rtw_signal_stat_timer_hdl(struct timer_list *t);
  18
  19 void _rtw_init_sta_recv_priv(struct sta_recv_priv *psta_recvpriv)
  20 {
  21         memset((u8 *)psta_recvpriv, 0, sizeof(struct sta_recv_priv));
  22
  23         spin_lock_init(&psta_recvpriv->lock);
  24
  25         /* for (i = 0; i<MAX_RX_NUMBLKS; i++) */
  26         /* _rtw_init_queue(&psta_recvpriv->blk_strms[i]); */
  27
  28         INIT_LIST_HEAD(&psta_recvpriv->defrag_q.queue);
  29         spin_lock_init(&psta_recvpriv->defrag_q.lock);
  30 }
  31
  32 signed int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter)
  33 {
  34         signed int i;
  35         union recv_frame *precvframe;
  36         signed int      res = _SUCCESS;
  37
  38         spin_lock_init(&precvpriv->lock);
  39
  40         INIT_LIST_HEAD(&precvpriv->free_recv_queue.queue);
  41         spin_lock_init(&precvpriv->free_recv_queue.lock);
  42         INIT_LIST_HEAD(&precvpriv->recv_pending_queue.queue);
  43         spin_lock_init(&precvpriv->recv_pending_queue.lock);
  44         INIT_LIST_HEAD(&precvpriv->uc_swdec_pending_queue.queue);
  45         spin_lock_init(&precvpriv->uc_swdec_pending_queue.lock);
  46
  47         precvpriv->adapter = padapter;
  48
  49         precvpriv->free_recvframe_cnt = NR_RECVFRAME;
  50
  51         precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(union recv_frame) + RXFRAME_ALIGN_SZ);
  52
  53         if (!precvpriv->pallocated_frame_buf) {
  54                 res = _FAIL;
  55                 goto exit;
  56         }
  57
  58         precvpriv->precv_frame_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ);
  59         /* precvpriv->precv_frame_buf = precvpriv->pallocated_frame_buf + RXFRAME_ALIGN_SZ - */
  60         /* ((SIZE_PTR) (precvpriv->pallocated_frame_buf) &(RXFRAME_ALIGN_SZ-1)); */
  61
  62         precvframe = (union recv_frame *) precvpriv->precv_frame_buf;
  63
  64
  65         for (i = 0; i < NR_RECVFRAME; i++) {
  66                 INIT_LIST_HEAD(&(precvframe->u.list));
  67
  68                 list_add_tail(&(precvframe->u.list), &(precvpriv->free_recv_queue.queue));
  69
  70                 rtw_os_recv_resource_alloc(padapter, precvframe);
  71
  72                 precvframe->u.hdr.len = 0;
  73
  74                 precvframe->u.hdr.adapter = padapter;
  75                 precvframe++;
  76
  77         }
  78
  79         res = rtw_hal_init_recv_priv(padapter);
  80
  81         timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl,
  82                     0);
  83
  84         precvpriv->signal_stat_sampling_interval = 2000; /* ms */
  85
  86         rtw_set_signal_stat_timer(precvpriv);
  87
  88 exit:
  89         return res;
  90 }
  91
  92 void _rtw_free_recv_priv(struct recv_priv *precvpriv)
  93 {
  94         struct adapter  *padapter = precvpriv->adapter;
  95
  96         rtw_free_uc_swdec_pending_queue(padapter);
  97
  98         rtw_os_recv_resource_free(precvpriv);
  99
 100         vfree(precvpriv->pallocated_frame_buf);
 101
 102         rtw_hal_free_recv_priv(padapter);
 103 }
 104
 105 union recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
 106 {
 107
 108         union recv_frame  *precvframe;
 109         struct list_head        *plist, *phead;
 110         struct adapter *padapter;
 111         struct recv_priv *precvpriv;
 112
 113         if (list_empty(&pfree_recv_queue->queue))
 114                 precvframe = NULL;
 115         else {
 116                 phead = get_list_head(pfree_recv_queue);
 117
 118                 plist = get_next(phead);
 119
 120                 precvframe = (union recv_frame *)plist;
 121
 122                 list_del_init(&precvframe->u.hdr.list);
 123                 padapter = precvframe->u.hdr.adapter;
 124                 if (padapter) {
 125                         precvpriv = &padapter->recvpriv;
 126                         if (pfree_recv_queue == &precvpriv->free_recv_queue)
 127                                 precvpriv->free_recvframe_cnt--;
 128                 }
 129         }
 130         return precvframe;
 131 }
 132
 133 union recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue)
 134 {
 135         union recv_frame  *precvframe;
 136
 137         spin_lock_bh(&pfree_recv_queue->lock);
 138
 139         precvframe = _rtw_alloc_recvframe(pfree_recv_queue);
 140
 141         spin_unlock_bh(&pfree_recv_queue->lock);
 142
 143         return precvframe;
 144 }
 145
 146 int rtw_free_recvframe(union recv_frame *precvframe, struct __queue *pfree_recv_queue)
 147 {
 148         struct adapter *padapter = precvframe->u.hdr.adapter;
 149         struct recv_priv *precvpriv = &padapter->recvpriv;
 150
 151         rtw_os_free_recvframe(precvframe);
 152
 153
 154         spin_lock_bh(&pfree_recv_queue->lock);
 155
 156         list_del_init(&(precvframe->u.hdr.list));
 157
 158         precvframe->u.hdr.len = 0;
 159
 160         list_add_tail(&(precvframe->u.hdr.list), get_list_head(pfree_recv_queue));
 161
 162         if (padapter) {
 163                 if (pfree_recv_queue == &precvpriv->free_recv_queue)
 164                         precvpriv->free_recvframe_cnt++;
 165         }
 166         spin_unlock_bh(&pfree_recv_queue->lock);
 167         return _SUCCESS;
 168 }
 169
 170
 171
 172
 173 signed int _rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
 174 {
 175
 176         struct adapter *padapter = precvframe->u.hdr.adapter;
 177         struct recv_priv *precvpriv = &padapter->recvpriv;
 178
 179         /* INIT_LIST_HEAD(&(precvframe->u.hdr.list)); */
 180         list_del_init(&(precvframe->u.hdr.list));
 181
 182
 183         list_add_tail(&(precvframe->u.hdr.list), get_list_head(queue));
 184
 185         if (padapter)
 186                 if (queue == &precvpriv->free_recv_queue)
 187                         precvpriv->free_recvframe_cnt++;
 188
 189         return _SUCCESS;
 190 }
 191
 192 signed int rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue)
 193 {
 194         signed int ret;
 195
 196         /* _spinlock(&pfree_recv_queue->lock); */
 197         spin_lock_bh(&queue->lock);
 198         ret = _rtw_enqueue_recvframe(precvframe, queue);
 199         /* spin_unlock(&pfree_recv_queue->lock); */
 200         spin_unlock_bh(&queue->lock);
 201
 202         return ret;
 203 }
 204
 205 /*
 206  * caller : defrag ; recvframe_chk_defrag in recv_thread  (passive)
 207  * pframequeue: defrag_queue : will be accessed in recv_thread  (passive)
 208  *
 209  * using spinlock to protect
 210  *
 211  */
 212
 213 void rtw_free_recvframe_queue(struct __queue *pframequeue,  struct __queue *pfree_recv_queue)
 214 {
 215         union   recv_frame      *precvframe;
 216         struct list_head        *plist, *phead;
 217
 218         spin_lock(&pframequeue->lock);
 219
 220         phead = get_list_head(pframequeue);
 221         plist = get_next(phead);
 222
 223         while (phead != plist) {
 224                 precvframe = (union recv_frame *)plist;
 225
 226                 plist = get_next(plist);
 227
 228                 rtw_free_recvframe(precvframe, pfree_recv_queue);
 229         }
 230
 231         spin_unlock(&pframequeue->lock);
 232 }
 233
 234 u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter)
 235 {
 236         u32 cnt = 0;
 237         union recv_frame *pending_frame;
 238
 239         while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) {
 240                 rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue);
 241                 cnt++;
 242         }
 243
 244         return cnt;
 245 }
 246
 247
 248 signed int rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, struct __queue *queue)
 249 {
 250         spin_lock_bh(&queue->lock);
 251
 252         list_del_init(&precvbuf->list);
 253         list_add(&precvbuf->list, get_list_head(queue));
 254
 255         spin_unlock_bh(&queue->lock);
 256
 257         return _SUCCESS;
 258 }
 259
 260 signed int rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue)
 261 {
 262         spin_lock_bh(&queue->lock);
 263
 264         list_del_init(&precvbuf->list);
 265
 266         list_add_tail(&precvbuf->list, get_list_head(queue));
 267         spin_unlock_bh(&queue->lock);
 268         return _SUCCESS;
 269
 270 }
 271
 272 struct recv_buf *rtw_dequeue_recvbuf(struct __queue *queue)
 273 {
 274         struct recv_buf *precvbuf;
 275         struct list_head        *plist, *phead;
 276
 277         spin_lock_bh(&queue->lock);
 278
 279         if (list_empty(&queue->queue))
 280                 precvbuf = NULL;
 281         else {
 282                 phead = get_list_head(queue);
 283
 284                 plist = get_next(phead);
 285
 286                 precvbuf = container_of(plist, struct recv_buf, list);
 287
 288                 list_del_init(&precvbuf->list);
 289
 290         }
 291
 292         spin_unlock_bh(&queue->lock);
 293
 294         return precvbuf;
 295
 296 }
 297
 298 static signed int recvframe_chkmic(struct adapter *adapter,  union recv_frame *precvframe)
 299 {
 300
 301         signed int      i, res = _SUCCESS;
 302         u32 datalen;
 303         u8 miccode[8];
 304         u8 bmic_err = false, brpt_micerror = true;
 305         u8 *pframe, *payload, *pframemic;
 306         u8 *mickey;
 307         /* u8 *iv, rxdata_key_idx = 0; */
 308         struct sta_info *stainfo;
 309         struct rx_pkt_attrib *prxattrib = &precvframe->u.hdr.attrib;
 310         struct security_priv *psecuritypriv = &adapter->securitypriv;
 311
 312         struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv;
 313         struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
 314
 315         stainfo = rtw_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]);
 316
 317         if (prxattrib->encrypt == _TKIP_) {
 318                 /* calculate mic code */
 319                 if (stainfo) {
 320                         if (is_multicast_ether_addr(prxattrib->ra)) {
 321                                 /* mickey =&psecuritypriv->dot118021XGrprxmickey.skey[0]; */
 322                                 /* iv = precvframe->u.hdr.rx_data+prxattrib->hdrlen; */
 323                                 /* rxdata_key_idx =(((iv[3])>>6)&0x3) ; */
 324                                 mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0];
 325
 326                                 /* psecuritypriv->dot118021XGrpKeyid, pmlmeinfo->key_index, rxdata_key_idx); */
 327
 328                                 if (psecuritypriv->binstallGrpkey == false) {
 329                                         res = _FAIL;
 330                                         goto exit;
 331                                 }
 332                         } else {
 333                                 mickey = &stainfo->dot11tkiprxmickey.skey[0];
 334                         }
 335
 336                         datalen = precvframe->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len-prxattrib->icv_len-8;/* icv_len included the mic code */
 337                         pframe = precvframe->u.hdr.rx_data;
 338                         payload = pframe+prxattrib->hdrlen+prxattrib->iv_len;
 339
 340                         rtw_seccalctkipmic(mickey, pframe, payload, datalen, &miccode[0], (unsigned char)prxattrib->priority); /* care the length of the data */
 341
 342                         pframemic = payload+datalen;
 343
 344                         bmic_err = false;
 345
 346                         for (i = 0; i < 8; i++) {
 347                                 if (miccode[i] != *(pframemic + i))
 348                                         bmic_err = true;
 349                         }
 350
 351
 352                         if (bmic_err == true) {
 353                                 /*  double check key_index for some timing issue , */
 354                                 /*  cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */
 355                                 if ((is_multicast_ether_addr(prxattrib->ra) == true)  && (prxattrib->key_index != pmlmeinfo->key_index))
 356                                         brpt_micerror = false;
 357
 358                                 if (prxattrib->bdecrypted && brpt_micerror)
 359                                         rtw_handle_tkip_mic_err(adapter, (u8)is_multicast_ether_addr(prxattrib->ra));
 360
 361                                 res = _FAIL;
 362
 363                         } else {
 364                                 /* mic checked ok */
 365                                 if (!psecuritypriv->bcheck_grpkey &&
 366                                     is_multicast_ether_addr(prxattrib->ra))
 367                                         psecuritypriv->bcheck_grpkey = true;
 368                         }
 369                 }
 370
 371                 recvframe_pull_tail(precvframe, 8);
 372
 373         }
 374
 375 exit:
 376         return res;
 377
 378 }
 379
 380 /* decrypt and set the ivlen, icvlen of the recv_frame */
 381 static union recv_frame *decryptor(struct adapter *padapter, union recv_frame *precv_frame)
 382 {
 383
 384         struct rx_pkt_attrib *prxattrib = &precv_frame->u.hdr.attrib;
 385         struct security_priv *psecuritypriv = &padapter->securitypriv;
 386         union recv_frame *return_packet = precv_frame;
 387         u32  res = _SUCCESS;
 388
 389         if (prxattrib->encrypt > 0) {
 390                 u8 *iv = precv_frame->u.hdr.rx_data+prxattrib->hdrlen;
 391
 392                 prxattrib->key_index = (((iv[3])>>6)&0x3);
 393
 394                 if (prxattrib->key_index > WEP_KEYS) {
 395                         switch (prxattrib->encrypt) {
 396                         case _WEP40_:
 397                         case _WEP104_:
 398                                 prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex;
 399                                 break;
 400                         case _TKIP_:
 401                         case _AES_:
 402                         default:
 403                                 prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid;
 404                                 break;
 405                         }
 406                 }
 407         }
 408
 409         if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0) || (psecuritypriv->sw_decrypt == true))) {
 410                 psecuritypriv->hw_decrypted = false;
 411
 412                 switch (prxattrib->encrypt) {
 413                 case _WEP40_:
 414                 case _WEP104_:
 415                         rtw_wep_decrypt(padapter, (u8 *)precv_frame);
 416                         break;
 417                 case _TKIP_:
 418                         res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame);
 419                         break;
 420                 case _AES_:
 421                         res = rtw_aes_decrypt(padapter, (u8 *)precv_frame);
 422                         break;
 423                 default:
 424                                 break;
 425                 }
 426         } else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 &&
 427                    (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_)
 428                 ) {
 429                 psecuritypriv->hw_decrypted = true;
 430         } else {
 431         }
 432
 433         if (res == _FAIL) {
 434                 rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue);
 435                 return_packet = NULL;
 436         } else
 437                 prxattrib->bdecrypted = true;
 438
 439         return return_packet;
 440 }
 441
 442 /* set the security information in the recv_frame */
 443 static union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame)
 444 {
 445         u8 *psta_addr = NULL;
 446         u8 *ptr;
 447         uint  auth_alg;
 448         struct recv_frame_hdr *pfhdr;
 449         struct sta_info *psta;
 450         struct sta_priv *pstapriv;
 451         union recv_frame *prtnframe;
 452         u16 ether_type = 0;
 453         u16  eapol_type = 0x888e;/* for Funia BD's WPA issue */
 454         struct rx_pkt_attrib *pattrib;
 455
 456         pstapriv = &adapter->stapriv;
 457
 458         auth_alg = adapter->securitypriv.dot11AuthAlgrthm;
 459
 460         ptr = precv_frame->u.hdr.rx_data;
 461         pfhdr = &precv_frame->u.hdr;
 462         pattrib = &pfhdr->attrib;
 463         psta_addr = pattrib->ta;
 464
 465         prtnframe = NULL;
 466
 467         psta = rtw_get_stainfo(pstapriv, psta_addr);
 468
 469         if (auth_alg == 2) {
 470                 if ((psta) && (psta->ieee8021x_blocked)) {
 471                         __be16 be_tmp;
 472
 473                         /* blocked */
 474                         /* only accept EAPOL frame */
 475
 476                         prtnframe = precv_frame;
 477
 478                         /* get ether_type */
 479                         ptr = ptr + pfhdr->attrib.hdrlen + pfhdr->attrib.iv_len + LLC_HEADER_LENGTH;
 480                         memcpy(&be_tmp, ptr, 2);
 481                         ether_type = ntohs(be_tmp);
 482
 483                         if (ether_type == eapol_type)
 484                                 prtnframe = precv_frame;
 485                         else {
 486                                 /* free this frame */
 487                                 rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue);
 488                                 prtnframe = NULL;
 489                         }
 490                 } else {
 491                         /* allowed */
 492                         /* check decryption status, and decrypt the frame if needed */
 493
 494                         prtnframe = precv_frame;
 495                         /* check is the EAPOL frame or not (Rekey) */
 496                         /* if (ether_type == eapol_type) { */
 497                                 /* check Rekey */
 498
 499                         /* prtnframe =precv_frame; */
 500                         /*  */
 501                         /* else { */
 502                         /*  */
 503                 }
 504         } else
 505                 prtnframe = precv_frame;
 506
 507         return prtnframe;
 508 }
 509
 510 static signed int recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache)
 511 {
 512         signed int tid = precv_frame->u.hdr.attrib.priority;
 513
 514         u16 seq_ctrl = ((precv_frame->u.hdr.attrib.seq_num&0xffff) << 4) |
 515                 (precv_frame->u.hdr.attrib.frag_num & 0xf);
 516
 517         if (tid > 15)
 518                 return _FAIL;
 519
 520         if (1) { /* if (bretry) */
 521                 if (seq_ctrl == prxcache->tid_rxseq[tid])
 522                         return _FAIL;
 523         }
 524
 525         prxcache->tid_rxseq[tid] = seq_ctrl;
 526
 527         return _SUCCESS;
 528
 529 }
 530
 531 static void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame)
 532 {
 533         unsigned char pwrbit;
 534         u8 *ptr = precv_frame->u.hdr.rx_data;
 535         struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
 536         struct sta_priv *pstapriv = &padapter->stapriv;
 537         struct sta_info *psta = NULL;
 538
 539         psta = rtw_get_stainfo(pstapriv, pattrib->src);
 540
 541         pwrbit = GetPwrMgt(ptr);
 542
 543         if (psta) {
 544                 if (pwrbit) {
 545                         if (!(psta->state & WIFI_SLEEP_STATE)) {
 546                                 /* psta->state |= WIFI_SLEEP_STATE; */
 547                                 /* pstapriv->sta_dz_bitmap |= BIT(psta->aid); */
 548
 549                                 stop_sta_xmit(padapter, psta);
 550
 551                         }
 552                 } else {
 553                         if (psta->state & WIFI_SLEEP_STATE) {
 554                                 /* psta->state ^= WIFI_SLEEP_STATE; */
 555                                 /* pstapriv->sta_dz_bitmap &= ~BIT(psta->aid); */
 556
 557                                 wakeup_sta_to_xmit(padapter, psta);
 558                         }
 559                 }
 560
 561         }
 562 }
 563
 564 static void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame)
 565 {
 566         struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
 567         struct sta_priv *pstapriv = &padapter->stapriv;
 568         struct sta_info *psta = NULL;
 569
 570         psta = rtw_get_stainfo(pstapriv, pattrib->src);
 571
 572         if (!psta)
 573                 return;
 574
 575         if (!psta->qos_option)
 576                 return;
 577
 578         if (!(psta->qos_info&0xf))
 579                 return;
 580
 581         if (psta->state&WIFI_SLEEP_STATE) {
 582                 u8 wmmps_ac = 0;
 583
 584                 switch (pattrib->priority) {
 585                 case 1:
 586                 case 2:
 587                         wmmps_ac = psta->uapsd_bk&BIT(1);
 588                         break;
 589                 case 4:
 590                 case 5:
 591                         wmmps_ac = psta->uapsd_vi&BIT(1);
 592                         break;
 593                 case 6:
 594                 case 7:
 595                         wmmps_ac = psta->uapsd_vo&BIT(1);
 596                         break;
 597                 case 0:
 598                 case 3:
 599                 default:
 600                         wmmps_ac = psta->uapsd_be&BIT(1);
 601                         break;
 602                 }
 603
 604                 if (wmmps_ac) {
 605                         if (psta->sleepq_ac_len > 0)
 606                                 /* process received triggered frame */
 607                                 xmit_delivery_enabled_frames(padapter, psta);
 608                         else
 609                                 /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */
 610                                 issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0);
 611                 }
 612         }
 613 }
 614
 615 static void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info *sta)
 616 {
 617         int sz;
 618         struct sta_info *psta = NULL;
 619         struct stainfo_stats *pstats = NULL;
 620         struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
 621         struct recv_priv *precvpriv = &padapter->recvpriv;
 622
 623         sz = get_recvframe_len(prframe);
 624         precvpriv->rx_bytes += sz;
 625
 626         padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++;
 627
 628         if ((!is_broadcast_ether_addr(pattrib->dst)) && (!is_multicast_ether_addr(pattrib->dst)))
 629                 padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++;
 630
 631         if (sta)
 632                 psta = sta;
 633         else
 634                 psta = prframe->u.hdr.psta;
 635
 636         if (psta) {
 637                 pstats = &psta->sta_stats;
 638
 639                 pstats->rx_data_pkts++;
 640                 pstats->rx_bytes += sz;
 641         }
 642
 643         traffic_check_for_leave_lps(padapter, false, 0);
 644 }
 645
 646 static signed int sta2sta_data_frame(struct adapter *adapter, union recv_frame *precv_frame,
 647                         struct sta_info **psta)
 648 {
 649         u8 *ptr = precv_frame->u.hdr.rx_data;
 650         signed int ret = _SUCCESS;
 651         struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
 652         struct sta_priv *pstapriv = &adapter->stapriv;
 653         struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
 654         u8 *mybssid  = get_bssid(pmlmepriv);
 655         u8 *myhwaddr = myid(&adapter->eeprompriv);
 656         u8 *sta_addr = NULL;
 657         signed int bmcast = is_multicast_ether_addr(pattrib->dst);
 658
 659         if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) ||
 660                 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) {
 661
 662                 /*  filter packets that SA is myself or multicast or broadcast */
 663                 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
 664                         ret = _FAIL;
 665                         goto exit;
 666                 }
 667
 668                 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN))  && (!bmcast)) {
 669                         ret = _FAIL;
 670                         goto exit;
 671                 }
 672
 673                 if (is_zero_ether_addr(pattrib->bssid) ||
 674                     is_zero_ether_addr(mybssid) ||
 675                     (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
 676                         ret = _FAIL;
 677                         goto exit;
 678                 }
 679
 680                 sta_addr = pattrib->src;
 681
 682         } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) {
 683                 /*  For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */
 684                 if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) {
 685                         ret = _FAIL;
 686                         goto exit;
 687                 }
 688
 689                 sta_addr = pattrib->bssid;
 690         } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
 691                 if (bmcast) {
 692                         /*  For AP mode, if DA == MCAST, then BSSID should be also MCAST */
 693                         if (!is_multicast_ether_addr(pattrib->bssid)) {
 694                                 ret = _FAIL;
 695                                 goto exit;
 696                         }
 697                 } else { /*  not mc-frame */
 698                         /*  For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */
 699                         if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) {
 700                                 ret = _FAIL;
 701                                 goto exit;
 702                         }
 703
 704                         sta_addr = pattrib->src;
 705                 }
 706
 707         } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) {
 708                 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
 709                 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
 710                 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
 711                 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
 712                 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
 713
 714                 sta_addr = mybssid;
 715         } else
 716                 ret  = _FAIL;
 717
 718
 719
 720         if (bmcast)
 721                 *psta = rtw_get_bcmc_stainfo(adapter);
 722         else
 723                 *psta = rtw_get_stainfo(pstapriv, sta_addr); /*  get ap_info */
 724
 725         if (!*psta) {
 726                 ret = _FAIL;
 727                 goto exit;
 728         }
 729
 730 exit:
 731         return ret;
 732 }
 733
 734 static signed int ap2sta_data_frame(struct adapter *adapter, union recv_frame *precv_frame,
 735                        struct sta_info **psta)
 736 {
 737         u8 *ptr = precv_frame->u.hdr.rx_data;
 738         struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
 739         signed int ret = _SUCCESS;
 740         struct sta_priv *pstapriv = &adapter->stapriv;
 741         struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
 742         u8 *mybssid  = get_bssid(pmlmepriv);
 743         u8 *myhwaddr = myid(&adapter->eeprompriv);
 744         signed int bmcast = is_multicast_ether_addr(pattrib->dst);
 745
 746         if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) &&
 747             (check_fwstate(pmlmepriv, _FW_LINKED) == true ||
 748              check_fwstate(pmlmepriv, _FW_UNDER_LINKING) == true)
 749                 ) {
 750
 751                 /*  filter packets that SA is myself or multicast or broadcast */
 752                 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) {
 753                         ret = _FAIL;
 754                         goto exit;
 755                 }
 756
 757                 /*  da should be for me */
 758                 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) {
 759                         ret = _FAIL;
 760                         goto exit;
 761                 }
 762
 763
 764                 /*  check BSSID */
 765                 if (is_zero_ether_addr(pattrib->bssid) ||
 766                     is_zero_ether_addr(mybssid) ||
 767                     (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) {
 768
 769                         if (!bmcast)
 770                                 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
 771
 772                         ret = _FAIL;
 773                         goto exit;
 774                 }
 775
 776                 if (bmcast)
 777                         *psta = rtw_get_bcmc_stainfo(adapter);
 778                 else
 779                         *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /*  get ap_info */
 780
 781                 if (!*psta) {
 782                         ret = _FAIL;
 783                         goto exit;
 784                 }
 785
 786                 if (GetFrameSubType(ptr) & BIT(6)) {
 787                         /* No data, will not indicate to upper layer, temporily count it here */
 788                         count_rx_stats(adapter, precv_frame, *psta);
 789                         ret = RTW_RX_HANDLED;
 790                         goto exit;
 791                 }
 792
 793         } else if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) &&
 794                      (check_fwstate(pmlmepriv, _FW_LINKED) == true)) {
 795                 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN);
 796                 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN);
 797                 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN);
 798                 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN);
 799                 memcpy(pattrib->ta, pattrib->src, ETH_ALEN);
 800
 801                 /*  */
 802                 memcpy(pattrib->bssid,  mybssid, ETH_ALEN);
 803
 804
 805                 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /*  get sta_info */
 806                 if (!*psta) {
 807                         ret = _FAIL;
 808                         goto exit;
 809                 }
 810
 811
 812         } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
 813                 /* Special case */
 814                 ret = RTW_RX_HANDLED;
 815                 goto exit;
 816         } else {
 817                 if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) {
 818                         *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /*  get sta_info */
 819                         if (!*psta) {
 820
 821                                 /* for AP multicast issue , modify by yiwei */
 822                                 static unsigned long send_issue_deauth_time;
 823
 824                                 if (jiffies_to_msecs(jiffies - send_issue_deauth_time) > 10000 || send_issue_deauth_time == 0) {
 825                                         send_issue_deauth_time = jiffies;
 826
 827                                         issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
 828                                 }
 829                         }
 830                 }
 831
 832                 ret = _FAIL;
 833         }
 834
 835 exit:
 836         return ret;
 837 }
 838
 839 static signed int sta2ap_data_frame(struct adapter *adapter, union recv_frame *precv_frame,
 840                        struct sta_info **psta)
 841 {
 842         u8 *ptr = precv_frame->u.hdr.rx_data;
 843         struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
 844         struct sta_priv *pstapriv = &adapter->stapriv;
 845         struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
 846         unsigned char *mybssid  = get_bssid(pmlmepriv);
 847         signed int ret = _SUCCESS;
 848
 849         if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) {
 850                 /* For AP mode, RA =BSSID, TX =STA(SRC_ADDR), A3 =DST_ADDR */
 851                 if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) {
 852                         ret = _FAIL;
 853                         goto exit;
 854                 }
 855
 856                 *psta = rtw_get_stainfo(pstapriv, pattrib->src);
 857                 if (!*psta) {
 858                         issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
 859
 860                         ret = RTW_RX_HANDLED;
 861                         goto exit;
 862                 }
 863
 864                 process_pwrbit_data(adapter, precv_frame);
 865
 866                 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE)
 867                         process_wmmps_data(adapter, precv_frame);
 868
 869                 if (GetFrameSubType(ptr) & BIT(6)) {
 870                         /* No data, will not indicate to upper layer, temporily count it here */
 871                         count_rx_stats(adapter, precv_frame, *psta);
 872                         ret = RTW_RX_HANDLED;
 873                         goto exit;
 874                 }
 875         } else {
 876                 u8 *myhwaddr = myid(&adapter->eeprompriv);
 877
 878                 if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) {
 879                         ret = RTW_RX_HANDLED;
 880                         goto exit;
 881                 }
 882                 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
 883                 ret = RTW_RX_HANDLED;
 884                 goto exit;
 885         }
 886
 887 exit:
 888         return ret;
 889 }
 890
 891 static signed int validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame)
 892 {
 893         struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
 894         struct sta_priv *pstapriv = &padapter->stapriv;
 895         u8 *pframe = precv_frame->u.hdr.rx_data;
 896         struct sta_info *psta = NULL;
 897         /* uint len = precv_frame->u.hdr.len; */
 898
 899         if (GetFrameType(pframe) != WIFI_CTRL_TYPE)
 900                 return _FAIL;
 901
 902         /* receive the frames that ra(a1) is my address */
 903         if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN))
 904                 return _FAIL;
 905
 906         psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe));
 907         if (!psta)
 908                 return _FAIL;
 909
 910         /* for rx pkt statistics */
 911         psta->sta_stats.rx_ctrl_pkts++;
 912
 913         /* only handle ps-poll */
 914         if (GetFrameSubType(pframe) == WIFI_PSPOLL) {
 915                 u16 aid;
 916                 u8 wmmps_ac = 0;
 917
 918                 aid = GetAid(pframe);
 919                 if (psta->aid != aid)
 920                         return _FAIL;
 921
 922                 switch (pattrib->priority) {
 923                 case 1:
 924                 case 2:
 925                         wmmps_ac = psta->uapsd_bk&BIT(0);
 926                         break;
 927                 case 4:
 928                 case 5:
 929                         wmmps_ac = psta->uapsd_vi&BIT(0);
 930                         break;
 931                 case 6:
 932                 case 7:
 933                         wmmps_ac = psta->uapsd_vo&BIT(0);
 934                         break;
 935                 case 0:
 936                 case 3:
 937                 default:
 938                         wmmps_ac = psta->uapsd_be&BIT(0);
 939                         break;
 940                 }
 941
 942                 if (wmmps_ac)
 943                         return _FAIL;
 944
 945                 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) {
 946                         psta->expire_to = pstapriv->expire_to;
 947                         psta->state ^= WIFI_STA_ALIVE_CHK_STATE;
 948                 }
 949
 950                 if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) {
 951                         struct list_head        *xmitframe_plist, *xmitframe_phead;
 952                         struct xmit_frame *pxmitframe = NULL;
 953                         struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
 954
 955                         /* spin_lock_bh(&psta->sleep_q.lock); */
 956                         spin_lock_bh(&pxmitpriv->lock);
 957
 958                         xmitframe_phead = get_list_head(&psta->sleep_q);
 959                         xmitframe_plist = get_next(xmitframe_phead);
 960
 961                         if (xmitframe_phead != xmitframe_plist) {
 962                                 pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list);
 963
 964                                 xmitframe_plist = get_next(xmitframe_plist);
 965
 966                                 list_del_init(&pxmitframe->list);
 967
 968                                 psta->sleepq_len--;
 969
 970                                 if (psta->sleepq_len > 0)
 971                                         pxmitframe->attrib.mdata = 1;
 972                                 else
 973                                         pxmitframe->attrib.mdata = 0;
 974
 975                                 pxmitframe->attrib.triggered = 1;
 976
 977                                 rtw_hal_xmitframe_enqueue(padapter, pxmitframe);
 978
 979                                 if (psta->sleepq_len == 0) {
 980                                         pstapriv->tim_bitmap &= ~BIT(psta->aid);
 981
 982                                         /* update BCN for TIM IE */
 983                                         /* update_BCNTIM(padapter); */
 984                                         update_beacon(padapter, WLAN_EID_TIM, NULL, true);
 985                                 }
 986
 987                                 /* spin_unlock_bh(&psta->sleep_q.lock); */
 988                                 spin_unlock_bh(&pxmitpriv->lock);
 989
 990                         } else {
 991                                 /* spin_unlock_bh(&psta->sleep_q.lock); */
 992                                 spin_unlock_bh(&pxmitpriv->lock);
 993
 994                                 if (pstapriv->tim_bitmap&BIT(psta->aid)) {
 995                                         if (psta->sleepq_len == 0) {
 996                                                 /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */
 997                                                 issue_nulldata_in_interrupt(padapter, psta->hwaddr);
 998                                         } else {
 999                                                 psta->sleepq_len = 0;
1000                                         }
1001
1002                                         pstapriv->tim_bitmap &= ~BIT(psta->aid);
1003
1004                                         /* update BCN for TIM IE */
1005                                         /* update_BCNTIM(padapter); */
1006                                         update_beacon(padapter, WLAN_EID_TIM, NULL, true);
1007                                 }
1008                         }
1009                 }
1010         }
1011
1012         return _FAIL;
1013
1014 }
1015
1016 /* perform defrag */
1017 static union recv_frame *recvframe_defrag(struct adapter *adapter,
1018                                           struct __queue *defrag_q)
1019 {
1020         struct list_head         *plist, *phead;
1021         u8  wlanhdr_offset;
1022         u8 curfragnum;
1023         struct recv_frame_hdr *pfhdr, *pnfhdr;
1024         union recv_frame *prframe, *pnextrframe;
1025         struct __queue  *pfree_recv_queue;
1026
1027         curfragnum = 0;
1028         pfree_recv_queue = &adapter->recvpriv.free_recv_queue;
1029
1030         phead = get_list_head(defrag_q);
1031         plist = get_next(phead);
1032         prframe = (union recv_frame *)plist;
1033         pfhdr = &prframe->u.hdr;
1034         list_del_init(&(prframe->u.list));
1035
1036         if (curfragnum != pfhdr->attrib.frag_num) {
1037                 /* the first fragment number must be 0 */
1038                 /* free the whole queue */
1039                 rtw_free_recvframe(prframe, pfree_recv_queue);
1040                 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1041
1042                 return NULL;
1043         }
1044
1045         curfragnum++;
1046
1047         plist = get_list_head(defrag_q);
1048
1049         plist = get_next(plist);
1050
1051         while (phead != plist) {
1052                 pnextrframe = (union recv_frame *)plist;
1053                 pnfhdr = &pnextrframe->u.hdr;
1054
1055
1056                 /* check the fragment sequence  (2nd ~n fragment frame) */
1057
1058                 if (curfragnum != pnfhdr->attrib.frag_num) {
1059                         /* the fragment number must be increasing  (after decache) */
1060                         /* release the defrag_q & prframe */
1061                         rtw_free_recvframe(prframe, pfree_recv_queue);
1062                         rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1063                         return NULL;
1064                 }
1065
1066                 curfragnum++;
1067
1068                 /* copy the 2nd~n fragment frame's payload to the first fragment */
1069                 /* get the 2nd~last fragment frame's payload */
1070
1071                 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len;
1072
1073                 recvframe_pull(pnextrframe, wlanhdr_offset);
1074
1075                 /* append  to first fragment frame's tail (if privacy frame, pull the ICV) */
1076                 recvframe_pull_tail(prframe, pfhdr->attrib.icv_len);
1077
1078                 /* memcpy */
1079                 memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len);
1080
1081                 recvframe_put(prframe, pnfhdr->len);
1082
1083                 pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len;
1084                 plist = get_next(plist);
1085
1086         }
1087
1088         /* free the defrag_q queue and return the prframe */
1089         rtw_free_recvframe_queue(defrag_q, pfree_recv_queue);
1090
1091         return prframe;
1092 }
1093
1094 /* check if need to defrag, if needed queue the frame to defrag_q */
1095 static union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame)
1096 {
1097         u8 ismfrag;
1098         u8 fragnum;
1099         u8 *psta_addr;
1100         struct recv_frame_hdr *pfhdr;
1101         struct sta_info *psta;
1102         struct sta_priv *pstapriv;
1103         struct list_head *phead;
1104         union recv_frame *prtnframe = NULL;
1105         struct __queue *pfree_recv_queue, *pdefrag_q;
1106
1107         pstapriv = &padapter->stapriv;
1108
1109         pfhdr = &precv_frame->u.hdr;
1110
1111         pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1112
1113         /* need to define struct of wlan header frame ctrl */
1114         ismfrag = pfhdr->attrib.mfrag;
1115         fragnum = pfhdr->attrib.frag_num;
1116
1117         psta_addr = pfhdr->attrib.ta;
1118         psta = rtw_get_stainfo(pstapriv, psta_addr);
1119         if (!psta) {
1120                 u8 type = GetFrameType(pfhdr->rx_data);
1121
1122                 if (type != WIFI_DATA_TYPE) {
1123                         psta = rtw_get_bcmc_stainfo(padapter);
1124                         pdefrag_q = &psta->sta_recvpriv.defrag_q;
1125                 } else
1126                         pdefrag_q = NULL;
1127         } else
1128                 pdefrag_q = &psta->sta_recvpriv.defrag_q;
1129
1130         if ((ismfrag == 0) && (fragnum == 0))
1131                 prtnframe = precv_frame;/* isn't a fragment frame */
1132
1133         if (ismfrag == 1) {
1134                 /* 0~(n-1) fragment frame */
1135                 /* enqueue to defraf_g */
1136                 if (pdefrag_q) {
1137                         if (fragnum == 0)
1138                                 /* the first fragment */
1139                                 if (!list_empty(&pdefrag_q->queue))
1140                                         /* free current defrag_q */
1141                                         rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue);
1142
1143
1144                         /* Then enqueue the 0~(n-1) fragment into the defrag_q */
1145
1146                         /* spin_lock(&pdefrag_q->lock); */
1147                         phead = get_list_head(pdefrag_q);
1148                         list_add_tail(&pfhdr->list, phead);
1149                         /* spin_unlock(&pdefrag_q->lock); */
1150
1151                         prtnframe = NULL;
1152
1153                 } else {
1154                         /* can't find this ta's defrag_queue, so free this recv_frame */
1155                         rtw_free_recvframe(precv_frame, pfree_recv_queue);
1156                         prtnframe = NULL;
1157                 }
1158
1159         }
1160
1161         if ((ismfrag == 0) && (fragnum != 0)) {
1162                 /* the last fragment frame */
1163                 /* enqueue the last fragment */
1164                 if (pdefrag_q) {
1165                         /* spin_lock(&pdefrag_q->lock); */
1166                         phead = get_list_head(pdefrag_q);
1167                         list_add_tail(&pfhdr->list, phead);
1168                         /* spin_unlock(&pdefrag_q->lock); */
1169
1170                         /* call recvframe_defrag to defrag */
1171                         precv_frame = recvframe_defrag(padapter, pdefrag_q);
1172                         prtnframe = precv_frame;
1173
1174                 } else {
1175                         /* can't find this ta's defrag_queue, so free this recv_frame */
1176                         rtw_free_recvframe(precv_frame, pfree_recv_queue);
1177                         prtnframe = NULL;
1178                 }
1179
1180         }
1181
1182
1183         if ((prtnframe) && (prtnframe->u.hdr.attrib.privacy)) {
1184                 /* after defrag we must check tkip mic code */
1185                 if (recvframe_chkmic(padapter,  prtnframe) == _FAIL) {
1186                         rtw_free_recvframe(prtnframe, pfree_recv_queue);
1187                         prtnframe = NULL;
1188                 }
1189         }
1190         return prtnframe;
1191 }
1192
1193 static signed int validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame)
1194 {
1195         /* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */
1196
1197         precv_frame = recvframe_chk_defrag(padapter, precv_frame);
1198         if (!precv_frame)
1199                 return _SUCCESS;
1200
1201         {
1202                 /* for rx pkt statistics */
1203                 struct sta_info *psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->u.hdr.rx_data));
1204
1205                 if (psta) {
1206                         psta->sta_stats.rx_mgnt_pkts++;
1207                         if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_BEACON)
1208                                 psta->sta_stats.rx_beacon_pkts++;
1209                         else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBEREQ)
1210                                 psta->sta_stats.rx_probereq_pkts++;
1211                         else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBERSP) {
1212                                 if (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->u.hdr.rx_data), ETH_ALEN))
1213                                         psta->sta_stats.rx_probersp_pkts++;
1214                                 else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)) ||
1215                                          is_multicast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)))
1216                                         psta->sta_stats.rx_probersp_bm_pkts++;
1217                                 else
1218                                         psta->sta_stats.rx_probersp_uo_pkts++;
1219                         }
1220                 }
1221         }
1222
1223         mgt_dispatcher(padapter, precv_frame);
1224
1225         return _SUCCESS;
1226
1227 }
1228
1229 static signed int validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame)
1230 {
1231         u8 bretry;
1232         u8 *psa, *pda, *pbssid;
1233         struct sta_info *psta = NULL;
1234         u8 *ptr = precv_frame->u.hdr.rx_data;
1235         struct rx_pkt_attrib    *pattrib = &precv_frame->u.hdr.attrib;
1236         struct security_priv *psecuritypriv = &adapter->securitypriv;
1237         signed int ret = _SUCCESS;
1238
1239         bretry = GetRetry(ptr);
1240         pda = get_da(ptr);
1241         psa = get_sa(ptr);
1242         pbssid = get_hdr_bssid(ptr);
1243
1244         if (!pbssid) {
1245                 ret = _FAIL;
1246                 goto exit;
1247         }
1248
1249         memcpy(pattrib->dst, pda, ETH_ALEN);
1250         memcpy(pattrib->src, psa, ETH_ALEN);
1251
1252         memcpy(pattrib->bssid, pbssid, ETH_ALEN);
1253
1254         switch (pattrib->to_fr_ds) {
1255         case 0:
1256                 memcpy(pattrib->ra, pda, ETH_ALEN);
1257                 memcpy(pattrib->ta, psa, ETH_ALEN);
1258                 ret = sta2sta_data_frame(adapter, precv_frame, &psta);
1259                 break;
1260
1261         case 1:
1262                 memcpy(pattrib->ra, pda, ETH_ALEN);
1263                 memcpy(pattrib->ta, pbssid, ETH_ALEN);
1264                 ret = ap2sta_data_frame(adapter, precv_frame, &psta);
1265                 break;
1266
1267         case 2:
1268                 memcpy(pattrib->ra, pbssid, ETH_ALEN);
1269                 memcpy(pattrib->ta, psa, ETH_ALEN);
1270                 ret = sta2ap_data_frame(adapter, precv_frame, &psta);
1271                 break;
1272
1273         case 3:
1274                 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1275                 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1276                 ret = _FAIL;
1277                 break;
1278
1279         default:
1280                 ret = _FAIL;
1281                 break;
1282
1283         }
1284
1285         if (ret == _FAIL) {
1286                 goto exit;
1287         } else if (ret == RTW_RX_HANDLED) {
1288                 goto exit;
1289         }
1290
1291
1292         if (!psta) {
1293                 ret = _FAIL;
1294                 goto exit;
1295         }
1296
1297         /* psta->rssi = prxcmd->rssi; */
1298         /* psta->signal_quality = prxcmd->sq; */
1299         precv_frame->u.hdr.psta = psta;
1300
1301
1302         pattrib->amsdu = 0;
1303         pattrib->ack_policy = 0;
1304         /* parsing QC field */
1305         if (pattrib->qos == 1) {
1306                 pattrib->priority = GetPriority((ptr + 24));
1307                 pattrib->ack_policy = GetAckpolicy((ptr + 24));
1308                 pattrib->amsdu = GetAMsdu((ptr + 24));
1309                 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26;
1310
1311                 if (pattrib->priority != 0 && pattrib->priority != 3)
1312                         adapter->recvpriv.bIsAnyNonBEPkts = true;
1313
1314         } else {
1315                 pattrib->priority = 0;
1316                 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24;
1317         }
1318
1319
1320         if (pattrib->order)/* HT-CTRL 11n */
1321                 pattrib->hdrlen += 4;
1322
1323         precv_frame->u.hdr.preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority];
1324
1325         /*  decache, drop duplicate recv packets */
1326         if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) {
1327                 ret = _FAIL;
1328                 goto exit;
1329         }
1330
1331         if (pattrib->privacy) {
1332                 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, is_multicast_ether_addr(pattrib->ra));
1333
1334                 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1335         } else {
1336                 pattrib->encrypt = 0;
1337                 pattrib->iv_len = pattrib->icv_len = 0;
1338         }
1339
1340 exit:
1341         return ret;
1342 }
1343
1344 static signed int validate_80211w_mgmt(struct adapter *adapter, union recv_frame *precv_frame)
1345 {
1346         struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1347         struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1348         u8 *ptr = precv_frame->u.hdr.rx_data;
1349         u8 subtype;
1350
1351         subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1352
1353         /* only support station mode */
1354         if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) && check_fwstate(pmlmepriv, _FW_LINKED) &&
1355             adapter->securitypriv.binstallBIPkey == true) {
1356                 /* unicast management frame decrypt */
1357                 if (pattrib->privacy && !(is_multicast_ether_addr(GetAddr1Ptr(ptr))) &&
1358                         (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC || subtype == WIFI_ACTION)) {
1359                         u8 *mgmt_DATA;
1360                         u32 data_len = 0;
1361
1362                         pattrib->bdecrypted = 0;
1363                         pattrib->encrypt = _AES_;
1364                         pattrib->hdrlen = sizeof(struct ieee80211_hdr_3addr);
1365                         /* set iv and icv length */
1366                         SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt);
1367                         memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN);
1368                         memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN);
1369                         /* actual management data frame body */
1370                         data_len = pattrib->pkt_len - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len;
1371                         mgmt_DATA = rtw_zmalloc(data_len);
1372                         if (!mgmt_DATA)
1373                                 goto validate_80211w_fail;
1374                         precv_frame = decryptor(adapter, precv_frame);
1375                         /* save actual management data frame body */
1376                         memcpy(mgmt_DATA, ptr+pattrib->hdrlen+pattrib->iv_len, data_len);
1377                         /* overwrite the iv field */
1378                         memcpy(ptr+pattrib->hdrlen, mgmt_DATA, data_len);
1379                         /* remove the iv and icv length */
1380                         pattrib->pkt_len = pattrib->pkt_len - pattrib->iv_len - pattrib->icv_len;
1381                         kfree(mgmt_DATA);
1382                         if (!precv_frame)
1383                                 goto validate_80211w_fail;
1384                 } else if (is_multicast_ether_addr(GetAddr1Ptr(ptr)) &&
1385                         (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC)) {
1386                         signed int BIP_ret = _SUCCESS;
1387                         /* verify BIP MME IE of broadcast/multicast de-auth/disassoc packet */
1388                         BIP_ret = rtw_BIP_verify(adapter, (u8 *)precv_frame);
1389                         if (BIP_ret == _FAIL) {
1390                                 goto validate_80211w_fail;
1391                         } else if (BIP_ret == RTW_RX_HANDLED) {
1392                                 /* issue sa query request */
1393                                 issue_action_SA_Query(adapter, NULL, 0, 0);
1394                                 goto validate_80211w_fail;
1395                         }
1396                 } else { /* 802.11w protect */
1397                         if (subtype == WIFI_ACTION) {
1398                                 /* according 802.11-2012 standard, these five types are not robust types */
1399                                 if (ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_PUBLIC          &&
1400                                         ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_HT              &&
1401                                         ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_UNPROTECTED_WNM &&
1402                                         ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_SELF_PROTECTED  &&
1403                                         ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_P2P) {
1404                                         goto validate_80211w_fail;
1405                                 }
1406                         } else if (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC) {
1407                                 /* issue sa query request */
1408                                 issue_action_SA_Query(adapter, NULL, 0, 0);
1409                                 goto validate_80211w_fail;
1410                         }
1411                 }
1412         }
1413         return _SUCCESS;
1414
1415 validate_80211w_fail:
1416         return _FAIL;
1417
1418 }
1419
1420 static signed int validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame)
1421 {
1422         /* shall check frame subtype, to / from ds, da, bssid */
1423
1424         /* then call check if rx seq/frag. duplicated. */
1425
1426         u8 type;
1427         u8 subtype;
1428         signed int retval = _SUCCESS;
1429         u8 bDumpRxPkt;
1430
1431         struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib;
1432
1433         u8 *ptr = precv_frame->u.hdr.rx_data;
1434         u8  ver = (unsigned char) (*ptr)&0x3;
1435
1436         /* add version chk */
1437         if (ver != 0) {
1438                 retval = _FAIL;
1439                 goto exit;
1440         }
1441
1442         type =  GetFrameType(ptr);
1443         subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */
1444
1445         pattrib->to_fr_ds = get_tofr_ds(ptr);
1446
1447         pattrib->frag_num = GetFragNum(ptr);
1448         pattrib->seq_num = GetSequence(ptr);
1449
1450         pattrib->pw_save = GetPwrMgt(ptr);
1451         pattrib->mfrag = GetMFrag(ptr);
1452         pattrib->mdata = GetMData(ptr);
1453         pattrib->privacy = GetPrivacy(ptr);
1454         pattrib->order = GetOrder(ptr);
1455         rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1456
1457         switch (type) {
1458         case WIFI_MGT_TYPE: /* mgnt */
1459                 if (validate_80211w_mgmt(adapter, precv_frame) == _FAIL) {
1460                         retval = _FAIL;
1461                         break;
1462                 }
1463
1464                 retval = validate_recv_mgnt_frame(adapter, precv_frame);
1465                 retval = _FAIL; /*  only data frame return _SUCCESS */
1466                 break;
1467         case WIFI_CTRL_TYPE: /* ctrl */
1468                 retval = validate_recv_ctrl_frame(adapter, precv_frame);
1469                 retval = _FAIL; /*  only data frame return _SUCCESS */
1470                 break;
1471         case WIFI_DATA_TYPE: /* data */
1472                 pattrib->qos = (subtype & BIT(7)) ? 1:0;
1473                 retval = validate_recv_data_frame(adapter, precv_frame);
1474                 if (retval == _FAIL) {
1475                         struct recv_priv *precvpriv = &adapter->recvpriv;
1476
1477                         precvpriv->rx_drop++;
1478                 } else if (retval == _SUCCESS) {
1479 #ifdef DBG_RX_DUMP_EAP
1480                         u8 bDumpRxPkt;
1481                         u16 eth_type;
1482
1483                         /*  dump eapol */
1484                         rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt));
1485                         /*  get ether_type */
1486                         memcpy(&eth_type, ptr + pattrib->hdrlen + pattrib->iv_len + LLC_HEADER_LENGTH, 2);
1487                         eth_type = ntohs((unsigned short) eth_type);
1488 #endif
1489                 }
1490                 break;
1491         default:
1492                 retval = _FAIL;
1493                 break;
1494         }
1495
1496 exit:
1497         return retval;
1498 }
1499
1500 /* remove the wlanhdr and add the eth_hdr */
1501 static signed int wlanhdr_to_ethhdr(union recv_frame *precvframe)
1502 {
1503         signed int      rmv_len;
1504         u16 eth_type, len;
1505         u8 bsnaphdr;
1506         u8 *psnap_type;
1507         struct ieee80211_snap_hdr       *psnap;
1508         __be16 be_tmp;
1509         struct adapter                  *adapter = precvframe->u.hdr.adapter;
1510         struct mlme_priv *pmlmepriv = &adapter->mlmepriv;
1511         u8 *ptr = precvframe->u.hdr.rx_data; /*  point to frame_ctrl field */
1512         struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib;
1513
1514         if (pattrib->encrypt)
1515                 recvframe_pull_tail(precvframe, pattrib->icv_len);
1516
1517         psnap = (struct ieee80211_snap_hdr      *)(ptr+pattrib->hdrlen + pattrib->iv_len);
1518         psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE;
1519         /* convert hdr + possible LLC headers into Ethernet header */
1520         /* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */
1521         if ((!memcmp(psnap, rfc1042_header, SNAP_SIZE) &&
1522                 (memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2)) &&
1523                 (memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2))) ||
1524                 /* eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || */
1525                  !memcmp(psnap, bridge_tunnel_header, SNAP_SIZE)) {
1526                 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */
1527                 bsnaphdr = true;
1528         } else
1529                 /* Leave Ethernet header part of hdr and full payload */
1530                 bsnaphdr = false;
1531
1532         rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr?SNAP_SIZE:0);
1533         len = precvframe->u.hdr.len - rmv_len;
1534
1535         memcpy(&be_tmp, ptr+rmv_len, 2);
1536         eth_type = ntohs(be_tmp); /* pattrib->ether_type */
1537         pattrib->eth_type = eth_type;
1538
1539         if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)) {
1540                 ptr += rmv_len;
1541                 *ptr = 0x87;
1542                 *(ptr+1) = 0x12;
1543
1544                 eth_type = 0x8712;
1545                 /*  append rx status for mp test packets */
1546                 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24);
1547                 if (!ptr)
1548                         return _FAIL;
1549                 memcpy(ptr, get_rxmem(precvframe), 24);
1550                 ptr += 24;
1551         } else {
1552                 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr) + (bsnaphdr?2:0)));
1553                 if (!ptr)
1554                         return _FAIL;
1555         }
1556
1557         memcpy(ptr, pattrib->dst, ETH_ALEN);
1558         memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN);
1559
1560         if (!bsnaphdr) {
1561                 be_tmp = htons(len);
1562                 memcpy(ptr+12, &be_tmp, 2);
1563         }
1564
1565         return _SUCCESS;
1566 }
1567
1568 static int amsdu_to_msdu(struct adapter *padapter, union recv_frame *prframe)
1569 {
1570         int     a_len, padding_len;
1571         u16 nSubframe_Length;
1572         u8 nr_subframes, i;
1573         u8 *pdata;
1574         struct sk_buff *sub_pkt, *subframes[MAX_SUBFRAME_COUNT];
1575         struct recv_priv *precvpriv = &padapter->recvpriv;
1576         struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue);
1577
1578         nr_subframes = 0;
1579
1580         recvframe_pull(prframe, prframe->u.hdr.attrib.hdrlen);
1581
1582         if (prframe->u.hdr.attrib.iv_len > 0)
1583                 recvframe_pull(prframe, prframe->u.hdr.attrib.iv_len);
1584
1585         a_len = prframe->u.hdr.len;
1586
1587         pdata = prframe->u.hdr.rx_data;
1588
1589         while (a_len > ETH_HLEN) {
1590
1591                 /* Offset 12 denote 2 mac address */
1592                 nSubframe_Length = get_unaligned_be16(pdata + 12);
1593
1594                 if (a_len < ETH_HLEN + nSubframe_Length)
1595                         break;
1596
1597                 sub_pkt = rtw_os_alloc_msdu_pkt(prframe, nSubframe_Length, pdata);
1598                 if (!sub_pkt)
1599                         break;
1600
1601                 /* move the data point to data content */
1602                 pdata += ETH_HLEN;
1603                 a_len -= ETH_HLEN;
1604
1605                 subframes[nr_subframes++] = sub_pkt;
1606
1607                 if (nr_subframes >= MAX_SUBFRAME_COUNT)
1608                         break;
1609
1610                 pdata += nSubframe_Length;
1611                 a_len -= nSubframe_Length;
1612                 if (a_len != 0) {
1613                         padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1));
1614                         if (padding_len == 4)
1615                                 padding_len = 0;
1616
1617                         if (a_len < padding_len)
1618                                 break;
1619
1620                         pdata += padding_len;
1621                         a_len -= padding_len;
1622                 }
1623         }
1624
1625         for (i = 0; i < nr_subframes; i++) {
1626                 sub_pkt = subframes[i];
1627
1628                 /* Indicate the packets to upper layer */
1629                 if (sub_pkt)
1630                         rtw_os_recv_indicate_pkt(padapter, sub_pkt, &prframe->u.hdr.attrib);
1631         }
1632
1633         prframe->u.hdr.len = 0;
1634         rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */
1635
1636         return  _SUCCESS;
1637 }
1638
1639 static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num)
1640 {
1641         struct adapter *padapter = preorder_ctrl->padapter;
1642         struct dvobj_priv *psdpriv = padapter->dvobj;
1643         struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1644         u8 wsize = preorder_ctrl->wsize_b;
1645         u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/*  4096; */
1646
1647         /*  Rx Reorder initialize condition. */
1648         if (preorder_ctrl->indicate_seq == 0xFFFF)
1649                 preorder_ctrl->indicate_seq = seq_num;
1650
1651         /*  Drop out the packet which SeqNum is smaller than WinStart */
1652         if (SN_LESS(seq_num, preorder_ctrl->indicate_seq))
1653                 return false;
1654
1655         /*  */
1656         /*  Sliding window manipulation. Conditions includes: */
1657         /*  1. Incoming SeqNum is equal to WinStart =>Window shift 1 */
1658         /*  2. Incoming SeqNum is larger than the WinEnd => Window shift N */
1659         /*  */
1660         if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) {
1661                 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1662
1663         } else if (SN_LESS(wend, seq_num)) {
1664                 /*  boundary situation, when seq_num cross 0xFFF */
1665                 if (seq_num >= (wsize - 1))
1666                         preorder_ctrl->indicate_seq = seq_num + 1 - wsize;
1667                 else
1668                         preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1;
1669                 pdbgpriv->dbg_rx_ampdu_window_shift_cnt++;
1670         }
1671
1672         return true;
1673 }
1674
1675 static int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe)
1676 {
1677         struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
1678         struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1679         struct list_head        *phead, *plist;
1680         union recv_frame *pnextrframe;
1681         struct rx_pkt_attrib *pnextattrib;
1682
1683         /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
1684         /* spin_lock(&ppending_recvframe_queue->lock); */
1685
1686
1687         phead = get_list_head(ppending_recvframe_queue);
1688         plist = get_next(phead);
1689
1690         while (phead != plist) {
1691                 pnextrframe = (union recv_frame *)plist;
1692                 pnextattrib = &pnextrframe->u.hdr.attrib;
1693
1694                 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num))
1695                         plist = get_next(plist);
1696                 else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num))
1697                         /* Duplicate entry is found!! Do not insert current entry. */
1698                         /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1699                         return false;
1700                 else
1701                         break;
1702
1703         }
1704
1705
1706         /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
1707         /* spin_lock(&ppending_recvframe_queue->lock); */
1708
1709         list_del_init(&(prframe->u.hdr.list));
1710
1711         list_add_tail(&(prframe->u.hdr.list), plist);
1712
1713         /* spin_unlock(&ppending_recvframe_queue->lock); */
1714         /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1715
1716         return true;
1717
1718 }
1719
1720 static void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq)
1721 {
1722         if (current_seq < prev_seq)
1723                 pdbgpriv->dbg_rx_ampdu_loss_count += (4096 + current_seq - prev_seq);
1724         else
1725                 pdbgpriv->dbg_rx_ampdu_loss_count += (current_seq - prev_seq);
1726
1727 }
1728
1729 static int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced)
1730 {
1731         struct list_head        *phead, *plist;
1732         union recv_frame *prframe;
1733         struct rx_pkt_attrib *pattrib;
1734         /* u8 index = 0; */
1735         int bPktInBuf = false;
1736         struct recv_priv *precvpriv = &padapter->recvpriv;
1737         struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1738         struct dvobj_priv *psdpriv = padapter->dvobj;
1739         struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1740
1741         /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */
1742         /* spin_lock(&ppending_recvframe_queue->lock); */
1743
1744         phead =         get_list_head(ppending_recvframe_queue);
1745         plist = get_next(phead);
1746
1747         /*  Handling some condition for forced indicate case. */
1748         if (bforced == true) {
1749                 pdbgpriv->dbg_rx_ampdu_forced_indicate_count++;
1750                 if (list_empty(phead)) {
1751                         /*  spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1752                         /* spin_unlock(&ppending_recvframe_queue->lock); */
1753                         return true;
1754                 }
1755
1756                 prframe = (union recv_frame *)plist;
1757                 pattrib = &prframe->u.hdr.attrib;
1758
1759                 recv_indicatepkts_pkt_loss_cnt(pdbgpriv, preorder_ctrl->indicate_seq, pattrib->seq_num);
1760                 preorder_ctrl->indicate_seq = pattrib->seq_num;
1761
1762         }
1763
1764         /*  Prepare indication list and indication. */
1765         /*  Check if there is any packet need indicate. */
1766         while (!list_empty(phead)) {
1767
1768                 prframe = (union recv_frame *)plist;
1769                 pattrib = &prframe->u.hdr.attrib;
1770
1771                 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) {
1772                         plist = get_next(plist);
1773                         list_del_init(&(prframe->u.hdr.list));
1774
1775                         if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num))
1776                                 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF;
1777
1778                         /* Set this as a lock to make sure that only one thread is indicating packet. */
1779                         /* pTS->RxIndicateState = RXTS_INDICATE_PROCESSING; */
1780
1781                         /*  Indicate packets */
1782
1783                         /* indicate this recv_frame */
1784                         if (!pattrib->amsdu) {
1785                                 if ((padapter->bDriverStopped == false) &&
1786                                     (padapter->bSurpriseRemoved == false))
1787                                         rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */
1788
1789                         } else if (pattrib->amsdu == 1) {
1790                                 if (amsdu_to_msdu(padapter, prframe) != _SUCCESS)
1791                                         rtw_free_recvframe(prframe, &precvpriv->free_recv_queue);
1792
1793                         } else {
1794                                 /* error condition; */
1795                         }
1796
1797
1798                         /* Update local variables. */
1799                         bPktInBuf = false;
1800
1801                 } else {
1802                         bPktInBuf = true;
1803                         break;
1804                 }
1805
1806         }
1807
1808         /* spin_unlock(&ppending_recvframe_queue->lock); */
1809         /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1810
1811         return bPktInBuf;
1812 }
1813
1814 static int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe)
1815 {
1816         int retval = _SUCCESS;
1817         struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib;
1818         struct recv_reorder_ctrl *preorder_ctrl = prframe->u.hdr.preorder_ctrl;
1819         struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1820         struct dvobj_priv *psdpriv = padapter->dvobj;
1821         struct debug_priv *pdbgpriv = &psdpriv->drv_dbg;
1822
1823         if (!pattrib->amsdu) {
1824                 /* s1. */
1825                 wlanhdr_to_ethhdr(prframe);
1826
1827                 if (pattrib->qos != 1) {
1828                         if ((padapter->bDriverStopped == false) &&
1829                             (padapter->bSurpriseRemoved == false)) {
1830                                 rtw_recv_indicatepkt(padapter, prframe);
1831                                 return _SUCCESS;
1832
1833                         }
1834
1835                         return _FAIL;
1836
1837                 }
1838
1839                 if (preorder_ctrl->enable == false) {
1840                         /* indicate this recv_frame */
1841                         preorder_ctrl->indicate_seq = pattrib->seq_num;
1842
1843                         rtw_recv_indicatepkt(padapter, prframe);
1844
1845                         preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1846
1847                         return _SUCCESS;
1848                 }
1849         } else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */
1850                 if (preorder_ctrl->enable == false) {
1851                         preorder_ctrl->indicate_seq = pattrib->seq_num;
1852
1853                         retval = amsdu_to_msdu(padapter, prframe);
1854
1855                         preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096;
1856
1857                         if (retval != _SUCCESS) {
1858                         }
1859
1860                         return retval;
1861                 }
1862         }
1863
1864         spin_lock_bh(&ppending_recvframe_queue->lock);
1865
1866         /* s2. check if winstart_b(indicate_seq) needs to been updated */
1867         if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) {
1868                 pdbgpriv->dbg_rx_ampdu_drop_count++;
1869                 goto _err_exit;
1870         }
1871
1872
1873         /* s3. Insert all packet into Reorder Queue to maintain its ordering. */
1874         if (!enqueue_reorder_recvframe(preorder_ctrl, prframe)) {
1875                 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */
1876                 /* return _FAIL; */
1877                 goto _err_exit;
1878         }
1879
1880
1881         /* s4. */
1882         /*  Indication process. */
1883         /*  After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */
1884         /*  with the SeqNum smaller than latest WinStart and buffer other packets. */
1885         /*  */
1886         /*  For Rx Reorder condition: */
1887         /*  1. All packets with SeqNum smaller than WinStart => Indicate */
1888         /*  2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */
1889         /*  */
1890
1891         /* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */
1892         if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false) == true) {
1893                 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
1894                 spin_unlock_bh(&ppending_recvframe_queue->lock);
1895         } else {
1896                 spin_unlock_bh(&ppending_recvframe_queue->lock);
1897                 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer);
1898         }
1899
1900         return _SUCCESS;
1901
1902 _err_exit:
1903         spin_unlock_bh(&ppending_recvframe_queue->lock);
1904
1905         return _FAIL;
1906 }
1907
1908
1909 void rtw_reordering_ctrl_timeout_handler(struct timer_list *t)
1910 {
1911         struct recv_reorder_ctrl *preorder_ctrl =
1912                 from_timer(preorder_ctrl, t, reordering_ctrl_timer);
1913         struct adapter *padapter = preorder_ctrl->padapter;
1914         struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue;
1915
1916
1917         if (padapter->bDriverStopped || padapter->bSurpriseRemoved)
1918                 return;
1919
1920         spin_lock_bh(&ppending_recvframe_queue->lock);
1921
1922         if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true)
1923                 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME);
1924
1925         spin_unlock_bh(&ppending_recvframe_queue->lock);
1926
1927 }
1928
1929 static int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe)
1930 {
1931         int retval = _SUCCESS;
1932         /* struct recv_priv *precvpriv = &padapter->recvpriv; */
1933         /* struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; */
1934         struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
1935         struct ht_priv *phtpriv = &pmlmepriv->htpriv;
1936
1937         if (phtpriv->ht_option == true) { /* B/G/N Mode */
1938                 /* prframe->u.hdr.preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */
1939
1940                 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) { /*  including perform A-MPDU Rx Ordering Buffer Control */
1941
1942                         if ((padapter->bDriverStopped == false) &&
1943                             (padapter->bSurpriseRemoved == false)) {
1944                                 retval = _FAIL;
1945                                 return retval;
1946                         }
1947                 }
1948         } else { /* B/G mode */
1949                 retval = wlanhdr_to_ethhdr(prframe);
1950                 if (retval != _SUCCESS)
1951                         return retval;
1952
1953                 if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) {
1954                         /* indicate this recv_frame */
1955                         rtw_recv_indicatepkt(padapter, prframe);
1956                 } else {
1957                         retval = _FAIL;
1958                         return retval;
1959                 }
1960
1961         }
1962
1963         return retval;
1964
1965 }
1966
1967 static int recv_func_prehandle(struct adapter *padapter, union recv_frame *rframe)
1968 {
1969         int ret = _SUCCESS;
1970         struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1971
1972         /* check the frame crtl field and decache */
1973         ret = validate_recv_frame(padapter, rframe);
1974         if (ret != _SUCCESS) {
1975                 rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */
1976                 goto exit;
1977         }
1978
1979 exit:
1980         return ret;
1981 }
1982
1983 static int recv_func_posthandle(struct adapter *padapter, union recv_frame *prframe)
1984 {
1985         int ret = _SUCCESS;
1986         union recv_frame *orig_prframe = prframe;
1987         struct recv_priv *precvpriv = &padapter->recvpriv;
1988         struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue;
1989
1990         prframe = decryptor(padapter, prframe);
1991         if (!prframe) {
1992                 ret = _FAIL;
1993                 goto _recv_data_drop;
1994         }
1995
1996         prframe = recvframe_chk_defrag(padapter, prframe);
1997         if (!prframe)
1998                 goto _recv_data_drop;
1999
2000         prframe = portctrl(padapter, prframe);
2001         if (!prframe) {
2002                 ret = _FAIL;
2003                 goto _recv_data_drop;
2004         }
2005
2006         count_rx_stats(padapter, prframe, NULL);
2007
2008         ret = process_recv_indicatepkts(padapter, prframe);
2009         if (ret != _SUCCESS) {
2010                 rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */
2011                 goto _recv_data_drop;
2012         }
2013
2014 _recv_data_drop:
2015         precvpriv->rx_drop++;
2016         return ret;
2017 }
2018
2019 static int recv_func(struct adapter *padapter, union recv_frame *rframe)
2020 {
2021         int ret;
2022         struct rx_pkt_attrib *prxattrib = &rframe->u.hdr.attrib;
2023         struct recv_priv *recvpriv = &padapter->recvpriv;
2024         struct security_priv *psecuritypriv = &padapter->securitypriv;
2025         struct mlme_priv *mlmepriv = &padapter->mlmepriv;
2026
2027         /* check if need to handle uc_swdec_pending_queue*/
2028         if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) {
2029                 union recv_frame *pending_frame;
2030                 int cnt = 0;
2031
2032                 while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) {
2033                         cnt++;
2034                         recv_func_posthandle(padapter, pending_frame);
2035                 }
2036         }
2037
2038         ret = recv_func_prehandle(padapter, rframe);
2039
2040         if (ret == _SUCCESS) {
2041
2042                 /* check if need to enqueue into uc_swdec_pending_queue*/
2043                 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) &&
2044                         !is_multicast_ether_addr(prxattrib->ra) && prxattrib->encrypt > 0 &&
2045                         (prxattrib->bdecrypted == 0 || psecuritypriv->sw_decrypt == true) &&
2046                         psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK &&
2047                         !psecuritypriv->busetkipkey) {
2048                         rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue);
2049
2050                         if (recvpriv->free_recvframe_cnt < NR_RECVFRAME/4) {
2051                                 /* to prevent from recvframe starvation, get recvframe from uc_swdec_pending_queue to free_recvframe_cnt  */
2052                                 rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue);
2053                                 if (rframe)
2054                                         goto do_posthandle;
2055                         }
2056                         goto exit;
2057                 }
2058
2059 do_posthandle:
2060                 ret = recv_func_posthandle(padapter, rframe);
2061         }
2062
2063 exit:
2064         return ret;
2065 }
2066
2067
2068 s32 rtw_recv_entry(union recv_frame *precvframe)
2069 {
2070         struct adapter *padapter;
2071         struct recv_priv *precvpriv;
2072         s32 ret = _SUCCESS;
2073
2074         padapter = precvframe->u.hdr.adapter;
2075
2076         precvpriv = &padapter->recvpriv;
2077
2078         ret = recv_func(padapter, precvframe);
2079         if (ret == _FAIL)
2080                 goto _recv_entry_drop;
2081
2082         precvpriv->rx_pkts++;
2083
2084         return ret;
2085
2086 _recv_entry_drop:
2087
2088         return ret;
2089 }
2090
2091 static void rtw_signal_stat_timer_hdl(struct timer_list *t)
2092 {
2093         struct adapter *adapter =
2094                 from_timer(adapter, t, recvpriv.signal_stat_timer);
2095         struct recv_priv *recvpriv = &adapter->recvpriv;
2096
2097         u32 tmp_s, tmp_q;
2098         u8 avg_signal_strength = 0;
2099         u8 avg_signal_qual = 0;
2100         u32 num_signal_strength = 0;
2101         u32 __maybe_unused num_signal_qual = 0;
2102         u8 _alpha = 5; /*  this value is based on converging_constant = 5000 and sampling_interval = 1000 */
2103
2104         if (adapter->recvpriv.is_signal_dbg) {
2105                 /* update the user specific value, signal_strength_dbg, to signal_strength, rssi */
2106                 adapter->recvpriv.signal_strength = adapter->recvpriv.signal_strength_dbg;
2107                 adapter->recvpriv.rssi = (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg);
2108         } else {
2109
2110                 if (recvpriv->signal_strength_data.update_req == 0) {/*  update_req is clear, means we got rx */
2111                         avg_signal_strength = recvpriv->signal_strength_data.avg_val;
2112                         num_signal_strength = recvpriv->signal_strength_data.total_num;
2113                         /*  after avg_vals are acquired, we can re-stat the signal values */
2114                         recvpriv->signal_strength_data.update_req = 1;
2115                 }
2116
2117                 if (recvpriv->signal_qual_data.update_req == 0) {/*  update_req is clear, means we got rx */
2118                         avg_signal_qual = recvpriv->signal_qual_data.avg_val;
2119                         num_signal_qual = recvpriv->signal_qual_data.total_num;
2120                         /*  after avg_vals are acquired, we can re-stat the signal values */
2121                         recvpriv->signal_qual_data.update_req = 1;
2122                 }
2123
2124                 if (num_signal_strength == 0) {
2125                         if (rtw_get_on_cur_ch_time(adapter) == 0 ||
2126                             jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) < 2 * adapter->mlmeextpriv.mlmext_info.bcn_interval
2127                         ) {
2128                                 goto set_timer;
2129                         }
2130                 }
2131
2132                 if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == true ||
2133                     check_fwstate(&adapter->mlmepriv, _FW_LINKED) == false
2134                 ) {
2135                         goto set_timer;
2136                 }
2137
2138                 /* update value of signal_strength, rssi, signal_qual */
2139                 tmp_s = (avg_signal_strength+(_alpha-1)*recvpriv->signal_strength);
2140                 if (tmp_s % _alpha)
2141                         tmp_s = tmp_s/_alpha + 1;
2142                 else
2143                         tmp_s = tmp_s/_alpha;
2144                 if (tmp_s > 100)
2145                         tmp_s = 100;
2146
2147                 tmp_q = (avg_signal_qual+(_alpha-1)*recvpriv->signal_qual);
2148                 if (tmp_q % _alpha)
2149                         tmp_q = tmp_q/_alpha + 1;
2150                 else
2151                         tmp_q = tmp_q/_alpha;
2152                 if (tmp_q > 100)
2153                         tmp_q = 100;
2154
2155                 recvpriv->signal_strength = tmp_s;
2156                 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s);
2157                 recvpriv->signal_qual = tmp_q;
2158         }
2159
2160 set_timer:
2161         rtw_set_signal_stat_timer(recvpriv);
2162
2163 }