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 _rtw_init_queue(&psta_recvpriv->defrag_q); 29 } 30 31 signed int _rtw_init_recv_priv(struct recv_priv *precvpriv, struct adapter *padapter) 32 { 33 signed int i; 34 union recv_frame *precvframe; 35 signed int res = _SUCCESS; 36 37 spin_lock_init(&precvpriv->lock); 38 39 _rtw_init_queue(&precvpriv->free_recv_queue); 40 _rtw_init_queue(&precvpriv->recv_pending_queue); 41 _rtw_init_queue(&precvpriv->uc_swdec_pending_queue); 42 43 precvpriv->adapter = padapter; 44 45 precvpriv->free_recvframe_cnt = NR_RECVFRAME; 46 47 precvpriv->pallocated_frame_buf = vzalloc(NR_RECVFRAME * sizeof(union recv_frame) + RXFRAME_ALIGN_SZ); 48 49 if (!precvpriv->pallocated_frame_buf) { 50 res = _FAIL; 51 goto exit; 52 } 53 54 precvpriv->precv_frame_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_frame_buf), RXFRAME_ALIGN_SZ); 55 /* precvpriv->precv_frame_buf = precvpriv->pallocated_frame_buf + RXFRAME_ALIGN_SZ - */ 56 /* ((SIZE_PTR) (precvpriv->pallocated_frame_buf) &(RXFRAME_ALIGN_SZ-1)); */ 57 58 precvframe = (union recv_frame *) precvpriv->precv_frame_buf; 59 60 61 for (i = 0; i < NR_RECVFRAME; i++) { 62 INIT_LIST_HEAD(&(precvframe->u.list)); 63 64 list_add_tail(&(precvframe->u.list), &(precvpriv->free_recv_queue.queue)); 65 66 rtw_os_recv_resource_alloc(padapter, precvframe); 67 68 precvframe->u.hdr.len = 0; 69 70 precvframe->u.hdr.adapter = padapter; 71 precvframe++; 72 73 } 74 75 res = rtw_hal_init_recv_priv(padapter); 76 77 timer_setup(&precvpriv->signal_stat_timer, rtw_signal_stat_timer_hdl, 78 0); 79 80 precvpriv->signal_stat_sampling_interval = 2000; /* ms */ 81 82 rtw_set_signal_stat_timer(precvpriv); 83 84 exit: 85 return res; 86 } 87 88 void _rtw_free_recv_priv(struct recv_priv *precvpriv) 89 { 90 struct adapter *padapter = precvpriv->adapter; 91 92 rtw_free_uc_swdec_pending_queue(padapter); 93 94 rtw_os_recv_resource_free(precvpriv); 95 96 vfree(precvpriv->pallocated_frame_buf); 97 98 rtw_hal_free_recv_priv(padapter); 99 } 100 101 union recv_frame *_rtw_alloc_recvframe(struct __queue *pfree_recv_queue) 102 { 103 104 union recv_frame *precvframe; 105 struct list_head *plist, *phead; 106 struct adapter *padapter; 107 struct recv_priv *precvpriv; 108 109 if (list_empty(&pfree_recv_queue->queue)) 110 precvframe = NULL; 111 else { 112 phead = get_list_head(pfree_recv_queue); 113 114 plist = get_next(phead); 115 116 precvframe = (union recv_frame *)plist; 117 118 list_del_init(&precvframe->u.hdr.list); 119 padapter = precvframe->u.hdr.adapter; 120 if (padapter) { 121 precvpriv = &padapter->recvpriv; 122 if (pfree_recv_queue == &precvpriv->free_recv_queue) 123 precvpriv->free_recvframe_cnt--; 124 } 125 } 126 return precvframe; 127 } 128 129 union recv_frame *rtw_alloc_recvframe(struct __queue *pfree_recv_queue) 130 { 131 union recv_frame *precvframe; 132 133 spin_lock_bh(&pfree_recv_queue->lock); 134 135 precvframe = _rtw_alloc_recvframe(pfree_recv_queue); 136 137 spin_unlock_bh(&pfree_recv_queue->lock); 138 139 return precvframe; 140 } 141 142 int rtw_free_recvframe(union recv_frame *precvframe, struct __queue *pfree_recv_queue) 143 { 144 struct adapter *padapter = precvframe->u.hdr.adapter; 145 struct recv_priv *precvpriv = &padapter->recvpriv; 146 147 rtw_os_free_recvframe(precvframe); 148 149 150 spin_lock_bh(&pfree_recv_queue->lock); 151 152 list_del_init(&(precvframe->u.hdr.list)); 153 154 precvframe->u.hdr.len = 0; 155 156 list_add_tail(&(precvframe->u.hdr.list), get_list_head(pfree_recv_queue)); 157 158 if (padapter) { 159 if (pfree_recv_queue == &precvpriv->free_recv_queue) 160 precvpriv->free_recvframe_cnt++; 161 } 162 spin_unlock_bh(&pfree_recv_queue->lock); 163 return _SUCCESS; 164 } 165 166 167 168 169 signed int _rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue) 170 { 171 172 struct adapter *padapter = precvframe->u.hdr.adapter; 173 struct recv_priv *precvpriv = &padapter->recvpriv; 174 175 /* INIT_LIST_HEAD(&(precvframe->u.hdr.list)); */ 176 list_del_init(&(precvframe->u.hdr.list)); 177 178 179 list_add_tail(&(precvframe->u.hdr.list), get_list_head(queue)); 180 181 if (padapter) 182 if (queue == &precvpriv->free_recv_queue) 183 precvpriv->free_recvframe_cnt++; 184 185 return _SUCCESS; 186 } 187 188 signed int rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue) 189 { 190 signed int ret; 191 192 /* _spinlock(&pfree_recv_queue->lock); */ 193 spin_lock_bh(&queue->lock); 194 ret = _rtw_enqueue_recvframe(precvframe, queue); 195 /* spin_unlock(&pfree_recv_queue->lock); */ 196 spin_unlock_bh(&queue->lock); 197 198 return ret; 199 } 200 201 /* 202 signed int rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue) 203 { 204 return rtw_free_recvframe(precvframe, queue); 205 } 206 */ 207 208 209 210 211 /* 212 caller : defrag ; recvframe_chk_defrag in recv_thread (passive) 213 pframequeue: defrag_queue : will be accessed in recv_thread (passive) 214 215 using spinlock to protect 216 217 */ 218 219 void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue) 220 { 221 union recv_frame *precvframe; 222 struct list_head *plist, *phead; 223 224 spin_lock(&pframequeue->lock); 225 226 phead = get_list_head(pframequeue); 227 plist = get_next(phead); 228 229 while (phead != plist) { 230 precvframe = (union recv_frame *)plist; 231 232 plist = get_next(plist); 233 234 rtw_free_recvframe(precvframe, pfree_recv_queue); 235 } 236 237 spin_unlock(&pframequeue->lock); 238 } 239 240 u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter) 241 { 242 u32 cnt = 0; 243 union recv_frame *pending_frame; 244 while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) { 245 rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue); 246 cnt++; 247 } 248 249 return cnt; 250 } 251 252 253 signed int rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, struct __queue *queue) 254 { 255 spin_lock_bh(&queue->lock); 256 257 list_del_init(&precvbuf->list); 258 list_add(&precvbuf->list, get_list_head(queue)); 259 260 spin_unlock_bh(&queue->lock); 261 262 return _SUCCESS; 263 } 264 265 signed int rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue) 266 { 267 spin_lock_bh(&queue->lock); 268 269 list_del_init(&precvbuf->list); 270 271 list_add_tail(&precvbuf->list, get_list_head(queue)); 272 spin_unlock_bh(&queue->lock); 273 return _SUCCESS; 274 275 } 276 277 struct recv_buf *rtw_dequeue_recvbuf(struct __queue *queue) 278 { 279 struct recv_buf *precvbuf; 280 struct list_head *plist, *phead; 281 282 spin_lock_bh(&queue->lock); 283 284 if (list_empty(&queue->queue)) 285 precvbuf = NULL; 286 else { 287 phead = get_list_head(queue); 288 289 plist = get_next(phead); 290 291 precvbuf = container_of(plist, struct recv_buf, list); 292 293 list_del_init(&precvbuf->list); 294 295 } 296 297 spin_unlock_bh(&queue->lock); 298 299 return precvbuf; 300 301 } 302 303 static signed int recvframe_chkmic(struct adapter *adapter, union recv_frame *precvframe) 304 { 305 306 signed int i, res = _SUCCESS; 307 u32 datalen; 308 u8 miccode[8]; 309 u8 bmic_err = false, brpt_micerror = true; 310 u8 *pframe, *payload, *pframemic; 311 u8 *mickey; 312 /* u8 *iv, rxdata_key_idx = 0; */ 313 struct sta_info *stainfo; 314 struct rx_pkt_attrib *prxattrib = &precvframe->u.hdr.attrib; 315 struct security_priv *psecuritypriv = &adapter->securitypriv; 316 317 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv; 318 struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info); 319 320 stainfo = rtw_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]); 321 322 if (prxattrib->encrypt == _TKIP_) { 323 /* calculate mic code */ 324 if (stainfo) { 325 if (IS_MCAST(prxattrib->ra)) { 326 /* mickey =&psecuritypriv->dot118021XGrprxmickey.skey[0]; */ 327 /* iv = precvframe->u.hdr.rx_data+prxattrib->hdrlen; */ 328 /* rxdata_key_idx =(((iv[3])>>6)&0x3) ; */ 329 mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0]; 330 331 /* psecuritypriv->dot118021XGrpKeyid, pmlmeinfo->key_index, rxdata_key_idx); */ 332 333 if (psecuritypriv->binstallGrpkey == false) { 334 res = _FAIL; 335 goto exit; 336 } 337 } else { 338 mickey = &stainfo->dot11tkiprxmickey.skey[0]; 339 } 340 341 datalen = precvframe->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len-prxattrib->icv_len-8;/* icv_len included the mic code */ 342 pframe = precvframe->u.hdr.rx_data; 343 payload = pframe+prxattrib->hdrlen+prxattrib->iv_len; 344 345 rtw_seccalctkipmic(mickey, pframe, payload, datalen, &miccode[0], (unsigned char)prxattrib->priority); /* care the length of the data */ 346 347 pframemic = payload+datalen; 348 349 bmic_err = false; 350 351 for (i = 0; i < 8; i++) { 352 if (miccode[i] != *(pframemic + i)) 353 bmic_err = true; 354 } 355 356 357 if (bmic_err == true) { 358 /* double check key_index for some timing issue , */ 359 /* cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */ 360 if ((IS_MCAST(prxattrib->ra) == true) && (prxattrib->key_index != pmlmeinfo->key_index)) 361 brpt_micerror = false; 362 363 if (prxattrib->bdecrypted && brpt_micerror) 364 rtw_handle_tkip_mic_err(adapter, (u8)IS_MCAST(prxattrib->ra)); 365 366 res = _FAIL; 367 368 } else { 369 /* mic checked ok */ 370 if (!psecuritypriv->bcheck_grpkey && 371 IS_MCAST(prxattrib->ra)) 372 psecuritypriv->bcheck_grpkey = true; 373 } 374 } 375 376 recvframe_pull_tail(precvframe, 8); 377 378 } 379 380 exit: 381 return res; 382 383 } 384 385 /* decrypt and set the ivlen, icvlen of the recv_frame */ 386 static union recv_frame *decryptor(struct adapter *padapter, union recv_frame *precv_frame) 387 { 388 389 struct rx_pkt_attrib *prxattrib = &precv_frame->u.hdr.attrib; 390 struct security_priv *psecuritypriv = &padapter->securitypriv; 391 union recv_frame *return_packet = precv_frame; 392 u32 res = _SUCCESS; 393 394 if (prxattrib->encrypt > 0) { 395 u8 *iv = precv_frame->u.hdr.rx_data+prxattrib->hdrlen; 396 prxattrib->key_index = (((iv[3])>>6)&0x3); 397 398 if (prxattrib->key_index > WEP_KEYS) { 399 switch (prxattrib->encrypt) { 400 case _WEP40_: 401 case _WEP104_: 402 prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex; 403 break; 404 case _TKIP_: 405 case _AES_: 406 default: 407 prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid; 408 break; 409 } 410 } 411 } 412 413 if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0) || (psecuritypriv->sw_decrypt == true))) { 414 psecuritypriv->hw_decrypted = false; 415 416 switch (prxattrib->encrypt) { 417 case _WEP40_: 418 case _WEP104_: 419 rtw_wep_decrypt(padapter, (u8 *)precv_frame); 420 break; 421 case _TKIP_: 422 res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame); 423 break; 424 case _AES_: 425 res = rtw_aes_decrypt(padapter, (u8 *)precv_frame); 426 break; 427 default: 428 break; 429 } 430 } else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 && 431 (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_) 432 ) { 433 psecuritypriv->hw_decrypted = true; 434 } else { 435 } 436 437 if (res == _FAIL) { 438 rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue); 439 return_packet = NULL; 440 } else 441 prxattrib->bdecrypted = true; 442 443 return return_packet; 444 } 445 446 /* set the security information in the recv_frame */ 447 static union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame) 448 { 449 u8 *psta_addr = NULL; 450 u8 *ptr; 451 uint auth_alg; 452 struct recv_frame_hdr *pfhdr; 453 struct sta_info *psta; 454 struct sta_priv *pstapriv; 455 union recv_frame *prtnframe; 456 u16 ether_type = 0; 457 u16 eapol_type = 0x888e;/* for Funia BD's WPA issue */ 458 struct rx_pkt_attrib *pattrib; 459 460 pstapriv = &adapter->stapriv; 461 462 auth_alg = adapter->securitypriv.dot11AuthAlgrthm; 463 464 ptr = get_recvframe_data(precv_frame); 465 pfhdr = &precv_frame->u.hdr; 466 pattrib = &pfhdr->attrib; 467 psta_addr = pattrib->ta; 468 469 prtnframe = NULL; 470 471 psta = rtw_get_stainfo(pstapriv, psta_addr); 472 473 if (auth_alg == 2) { 474 if ((psta) && (psta->ieee8021x_blocked)) { 475 __be16 be_tmp; 476 477 /* blocked */ 478 /* only accept EAPOL frame */ 479 480 prtnframe = precv_frame; 481 482 /* get ether_type */ 483 ptr = ptr+pfhdr->attrib.hdrlen+pfhdr->attrib.iv_len+LLC_HEADER_SIZE; 484 memcpy(&be_tmp, ptr, 2); 485 ether_type = ntohs(be_tmp); 486 487 if (ether_type == eapol_type) 488 prtnframe = precv_frame; 489 else { 490 /* free this frame */ 491 rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue); 492 prtnframe = NULL; 493 } 494 } else { 495 /* allowed */ 496 /* check decryption status, and decrypt the frame if needed */ 497 498 prtnframe = precv_frame; 499 /* check is the EAPOL frame or not (Rekey) */ 500 /* if (ether_type == eapol_type) { */ 501 /* check Rekey */ 502 503 /* prtnframe =precv_frame; */ 504 /* */ 505 /* else { */ 506 /* */ 507 } 508 } else 509 prtnframe = precv_frame; 510 511 return prtnframe; 512 } 513 514 static signed int recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache) 515 { 516 signed int tid = precv_frame->u.hdr.attrib.priority; 517 518 u16 seq_ctrl = ((precv_frame->u.hdr.attrib.seq_num&0xffff) << 4) | 519 (precv_frame->u.hdr.attrib.frag_num & 0xf); 520 521 if (tid > 15) 522 return _FAIL; 523 524 if (1) { /* if (bretry) */ 525 if (seq_ctrl == prxcache->tid_rxseq[tid]) 526 return _FAIL; 527 } 528 529 prxcache->tid_rxseq[tid] = seq_ctrl; 530 531 return _SUCCESS; 532 533 } 534 535 static void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame) 536 { 537 unsigned char pwrbit; 538 u8 *ptr = precv_frame->u.hdr.rx_data; 539 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 540 struct sta_priv *pstapriv = &padapter->stapriv; 541 struct sta_info *psta = NULL; 542 543 psta = rtw_get_stainfo(pstapriv, pattrib->src); 544 545 pwrbit = GetPwrMgt(ptr); 546 547 if (psta) { 548 if (pwrbit) { 549 if (!(psta->state & WIFI_SLEEP_STATE)) { 550 /* psta->state |= WIFI_SLEEP_STATE; */ 551 /* pstapriv->sta_dz_bitmap |= BIT(psta->aid); */ 552 553 stop_sta_xmit(padapter, psta); 554 555 } 556 } else { 557 if (psta->state & WIFI_SLEEP_STATE) { 558 /* psta->state ^= WIFI_SLEEP_STATE; */ 559 /* pstapriv->sta_dz_bitmap &= ~BIT(psta->aid); */ 560 561 wakeup_sta_to_xmit(padapter, psta); 562 } 563 } 564 565 } 566 } 567 568 static void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame) 569 { 570 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 571 struct sta_priv *pstapriv = &padapter->stapriv; 572 struct sta_info *psta = NULL; 573 574 psta = rtw_get_stainfo(pstapriv, pattrib->src); 575 576 if (!psta) 577 return; 578 579 if (!psta->qos_option) 580 return; 581 582 if (!(psta->qos_info&0xf)) 583 return; 584 585 if (psta->state&WIFI_SLEEP_STATE) { 586 u8 wmmps_ac = 0; 587 588 switch (pattrib->priority) { 589 case 1: 590 case 2: 591 wmmps_ac = psta->uapsd_bk&BIT(1); 592 break; 593 case 4: 594 case 5: 595 wmmps_ac = psta->uapsd_vi&BIT(1); 596 break; 597 case 6: 598 case 7: 599 wmmps_ac = psta->uapsd_vo&BIT(1); 600 break; 601 case 0: 602 case 3: 603 default: 604 wmmps_ac = psta->uapsd_be&BIT(1); 605 break; 606 } 607 608 if (wmmps_ac) { 609 if (psta->sleepq_ac_len > 0) 610 /* process received triggered frame */ 611 xmit_delivery_enabled_frames(padapter, psta); 612 else 613 /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */ 614 issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0); 615 } 616 } 617 } 618 619 static void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info *sta) 620 { 621 int sz; 622 struct sta_info *psta = NULL; 623 struct stainfo_stats *pstats = NULL; 624 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; 625 struct recv_priv *precvpriv = &padapter->recvpriv; 626 627 sz = get_recvframe_len(prframe); 628 precvpriv->rx_bytes += sz; 629 630 padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++; 631 632 if ((!MacAddr_isBcst(pattrib->dst)) && (!IS_MCAST(pattrib->dst))) 633 padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++; 634 635 if (sta) 636 psta = sta; 637 else 638 psta = prframe->u.hdr.psta; 639 640 if (psta) { 641 pstats = &psta->sta_stats; 642 643 pstats->rx_data_pkts++; 644 pstats->rx_bytes += sz; 645 } 646 647 traffic_check_for_leave_lps(padapter, false, 0); 648 } 649 650 static signed int sta2sta_data_frame(struct adapter *adapter, union recv_frame *precv_frame, 651 struct sta_info **psta) 652 { 653 u8 *ptr = precv_frame->u.hdr.rx_data; 654 signed int ret = _SUCCESS; 655 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 656 struct sta_priv *pstapriv = &adapter->stapriv; 657 struct mlme_priv *pmlmepriv = &adapter->mlmepriv; 658 u8 *mybssid = get_bssid(pmlmepriv); 659 u8 *myhwaddr = myid(&adapter->eeprompriv); 660 u8 *sta_addr = NULL; 661 signed int bmcast = IS_MCAST(pattrib->dst); 662 663 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) || 664 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) { 665 666 /* filter packets that SA is myself or multicast or broadcast */ 667 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) { 668 ret = _FAIL; 669 goto exit; 670 } 671 672 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) { 673 ret = _FAIL; 674 goto exit; 675 } 676 677 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) || 678 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) || 679 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) { 680 ret = _FAIL; 681 goto exit; 682 } 683 684 sta_addr = pattrib->src; 685 686 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) { 687 /* For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */ 688 if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) { 689 ret = _FAIL; 690 goto exit; 691 } 692 693 sta_addr = pattrib->bssid; 694 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) { 695 if (bmcast) { 696 /* For AP mode, if DA == MCAST, then BSSID should be also MCAST */ 697 if (!IS_MCAST(pattrib->bssid)) { 698 ret = _FAIL; 699 goto exit; 700 } 701 } else { /* not mc-frame */ 702 /* For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */ 703 if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) { 704 ret = _FAIL; 705 goto exit; 706 } 707 708 sta_addr = pattrib->src; 709 } 710 711 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) { 712 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN); 713 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN); 714 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN); 715 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 716 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 717 718 sta_addr = mybssid; 719 } else 720 ret = _FAIL; 721 722 723 724 if (bmcast) 725 *psta = rtw_get_bcmc_stainfo(adapter); 726 else 727 *psta = rtw_get_stainfo(pstapriv, sta_addr); /* get ap_info */ 728 729 if (!*psta) { 730 ret = _FAIL; 731 goto exit; 732 } 733 734 exit: 735 return ret; 736 } 737 738 static signed int ap2sta_data_frame(struct adapter *adapter, union recv_frame *precv_frame, 739 struct sta_info **psta) 740 { 741 u8 *ptr = precv_frame->u.hdr.rx_data; 742 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 743 signed int ret = _SUCCESS; 744 struct sta_priv *pstapriv = &adapter->stapriv; 745 struct mlme_priv *pmlmepriv = &adapter->mlmepriv; 746 u8 *mybssid = get_bssid(pmlmepriv); 747 u8 *myhwaddr = myid(&adapter->eeprompriv); 748 signed int bmcast = IS_MCAST(pattrib->dst); 749 750 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) && 751 (check_fwstate(pmlmepriv, _FW_LINKED) == true || 752 check_fwstate(pmlmepriv, _FW_UNDER_LINKING) == true) 753 ) { 754 755 /* filter packets that SA is myself or multicast or broadcast */ 756 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) { 757 ret = _FAIL; 758 goto exit; 759 } 760 761 /* da should be for me */ 762 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) { 763 ret = _FAIL; 764 goto exit; 765 } 766 767 768 /* check BSSID */ 769 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) || 770 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) || 771 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) { 772 773 if (!bmcast) 774 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 775 776 ret = _FAIL; 777 goto exit; 778 } 779 780 if (bmcast) 781 *psta = rtw_get_bcmc_stainfo(adapter); 782 else 783 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get ap_info */ 784 785 if (!*psta) { 786 ret = _FAIL; 787 goto exit; 788 } 789 790 if (GetFrameSubType(ptr) & BIT(6)) { 791 /* No data, will not indicate to upper layer, temporily count it here */ 792 count_rx_stats(adapter, precv_frame, *psta); 793 ret = RTW_RX_HANDLED; 794 goto exit; 795 } 796 797 } else if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) && 798 (check_fwstate(pmlmepriv, _FW_LINKED) == true)) { 799 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN); 800 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN); 801 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN); 802 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 803 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 804 805 /* */ 806 memcpy(pattrib->bssid, mybssid, ETH_ALEN); 807 808 809 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */ 810 if (!*psta) { 811 ret = _FAIL; 812 goto exit; 813 } 814 815 816 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) { 817 /* Special case */ 818 ret = RTW_RX_HANDLED; 819 goto exit; 820 } else { 821 if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) { 822 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */ 823 if (!*psta) { 824 825 /* for AP multicast issue , modify by yiwei */ 826 static unsigned long send_issue_deauth_time; 827 828 if (jiffies_to_msecs(jiffies - send_issue_deauth_time) > 10000 || send_issue_deauth_time == 0) { 829 send_issue_deauth_time = jiffies; 830 831 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 832 } 833 } 834 } 835 836 ret = _FAIL; 837 } 838 839 exit: 840 return ret; 841 } 842 843 static signed int sta2ap_data_frame(struct adapter *adapter, union recv_frame *precv_frame, 844 struct sta_info **psta) 845 { 846 u8 *ptr = precv_frame->u.hdr.rx_data; 847 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 848 struct sta_priv *pstapriv = &adapter->stapriv; 849 struct mlme_priv *pmlmepriv = &adapter->mlmepriv; 850 unsigned char *mybssid = get_bssid(pmlmepriv); 851 signed int ret = _SUCCESS; 852 853 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) { 854 /* For AP mode, RA =BSSID, TX =STA(SRC_ADDR), A3 =DST_ADDR */ 855 if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) { 856 ret = _FAIL; 857 goto exit; 858 } 859 860 *psta = rtw_get_stainfo(pstapriv, pattrib->src); 861 if (!*psta) { 862 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 863 864 ret = RTW_RX_HANDLED; 865 goto exit; 866 } 867 868 process_pwrbit_data(adapter, precv_frame); 869 870 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) 871 process_wmmps_data(adapter, precv_frame); 872 873 if (GetFrameSubType(ptr) & BIT(6)) { 874 /* No data, will not indicate to upper layer, temporily count it here */ 875 count_rx_stats(adapter, precv_frame, *psta); 876 ret = RTW_RX_HANDLED; 877 goto exit; 878 } 879 } else { 880 u8 *myhwaddr = myid(&adapter->eeprompriv); 881 if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) { 882 ret = RTW_RX_HANDLED; 883 goto exit; 884 } 885 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 886 ret = RTW_RX_HANDLED; 887 goto exit; 888 } 889 890 exit: 891 return ret; 892 } 893 894 static signed int validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame) 895 { 896 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 897 struct sta_priv *pstapriv = &padapter->stapriv; 898 u8 *pframe = precv_frame->u.hdr.rx_data; 899 struct sta_info *psta = NULL; 900 /* uint len = precv_frame->u.hdr.len; */ 901 902 if (GetFrameType(pframe) != WIFI_CTRL_TYPE) 903 return _FAIL; 904 905 /* receive the frames that ra(a1) is my address */ 906 if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN)) 907 return _FAIL; 908 909 psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe)); 910 if (!psta) 911 return _FAIL; 912 913 /* for rx pkt statistics */ 914 psta->sta_stats.rx_ctrl_pkts++; 915 916 /* only handle ps-poll */ 917 if (GetFrameSubType(pframe) == WIFI_PSPOLL) { 918 u16 aid; 919 u8 wmmps_ac = 0; 920 921 aid = GetAid(pframe); 922 if (psta->aid != aid) 923 return _FAIL; 924 925 switch (pattrib->priority) { 926 case 1: 927 case 2: 928 wmmps_ac = psta->uapsd_bk&BIT(0); 929 break; 930 case 4: 931 case 5: 932 wmmps_ac = psta->uapsd_vi&BIT(0); 933 break; 934 case 6: 935 case 7: 936 wmmps_ac = psta->uapsd_vo&BIT(0); 937 break; 938 case 0: 939 case 3: 940 default: 941 wmmps_ac = psta->uapsd_be&BIT(0); 942 break; 943 } 944 945 if (wmmps_ac) 946 return _FAIL; 947 948 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) { 949 psta->expire_to = pstapriv->expire_to; 950 psta->state ^= WIFI_STA_ALIVE_CHK_STATE; 951 } 952 953 if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) { 954 struct list_head *xmitframe_plist, *xmitframe_phead; 955 struct xmit_frame *pxmitframe = NULL; 956 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 957 958 /* spin_lock_bh(&psta->sleep_q.lock); */ 959 spin_lock_bh(&pxmitpriv->lock); 960 961 xmitframe_phead = get_list_head(&psta->sleep_q); 962 xmitframe_plist = get_next(xmitframe_phead); 963 964 if (xmitframe_phead != xmitframe_plist) { 965 pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list); 966 967 xmitframe_plist = get_next(xmitframe_plist); 968 969 list_del_init(&pxmitframe->list); 970 971 psta->sleepq_len--; 972 973 if (psta->sleepq_len > 0) 974 pxmitframe->attrib.mdata = 1; 975 else 976 pxmitframe->attrib.mdata = 0; 977 978 pxmitframe->attrib.triggered = 1; 979 980 rtw_hal_xmitframe_enqueue(padapter, pxmitframe); 981 982 if (psta->sleepq_len == 0) { 983 pstapriv->tim_bitmap &= ~BIT(psta->aid); 984 985 /* update BCN for TIM IE */ 986 /* update_BCNTIM(padapter); */ 987 update_beacon(padapter, WLAN_EID_TIM, NULL, true); 988 } 989 990 /* spin_unlock_bh(&psta->sleep_q.lock); */ 991 spin_unlock_bh(&pxmitpriv->lock); 992 993 } else { 994 /* spin_unlock_bh(&psta->sleep_q.lock); */ 995 spin_unlock_bh(&pxmitpriv->lock); 996 997 if (pstapriv->tim_bitmap&BIT(psta->aid)) { 998 if (psta->sleepq_len == 0) { 999 /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */ 1000 issue_nulldata_in_interrupt(padapter, psta->hwaddr); 1001 } else { 1002 psta->sleepq_len = 0; 1003 } 1004 1005 pstapriv->tim_bitmap &= ~BIT(psta->aid); 1006 1007 /* update BCN for TIM IE */ 1008 /* update_BCNTIM(padapter); */ 1009 update_beacon(padapter, WLAN_EID_TIM, NULL, true); 1010 } 1011 } 1012 } 1013 } 1014 1015 return _FAIL; 1016 1017 } 1018 1019 /* perform defrag */ 1020 static union recv_frame *recvframe_defrag(struct adapter *adapter, 1021 struct __queue *defrag_q) 1022 { 1023 struct list_head *plist, *phead; 1024 u8 wlanhdr_offset; 1025 u8 curfragnum; 1026 struct recv_frame_hdr *pfhdr, *pnfhdr; 1027 union recv_frame *prframe, *pnextrframe; 1028 struct __queue *pfree_recv_queue; 1029 1030 curfragnum = 0; 1031 pfree_recv_queue = &adapter->recvpriv.free_recv_queue; 1032 1033 phead = get_list_head(defrag_q); 1034 plist = get_next(phead); 1035 prframe = (union recv_frame *)plist; 1036 pfhdr = &prframe->u.hdr; 1037 list_del_init(&(prframe->u.list)); 1038 1039 if (curfragnum != pfhdr->attrib.frag_num) { 1040 /* the first fragment number must be 0 */ 1041 /* free the whole queue */ 1042 rtw_free_recvframe(prframe, pfree_recv_queue); 1043 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue); 1044 1045 return NULL; 1046 } 1047 1048 curfragnum++; 1049 1050 plist = get_list_head(defrag_q); 1051 1052 plist = get_next(plist); 1053 1054 while (phead != plist) { 1055 pnextrframe = (union recv_frame *)plist; 1056 pnfhdr = &pnextrframe->u.hdr; 1057 1058 1059 /* check the fragment sequence (2nd ~n fragment frame) */ 1060 1061 if (curfragnum != pnfhdr->attrib.frag_num) { 1062 /* the fragment number must be increasing (after decache) */ 1063 /* release the defrag_q & prframe */ 1064 rtw_free_recvframe(prframe, pfree_recv_queue); 1065 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue); 1066 return NULL; 1067 } 1068 1069 curfragnum++; 1070 1071 /* copy the 2nd~n fragment frame's payload to the first fragment */ 1072 /* get the 2nd~last fragment frame's payload */ 1073 1074 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len; 1075 1076 recvframe_pull(pnextrframe, wlanhdr_offset); 1077 1078 /* append to first fragment frame's tail (if privacy frame, pull the ICV) */ 1079 recvframe_pull_tail(prframe, pfhdr->attrib.icv_len); 1080 1081 /* memcpy */ 1082 memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len); 1083 1084 recvframe_put(prframe, pnfhdr->len); 1085 1086 pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len; 1087 plist = get_next(plist); 1088 1089 } 1090 1091 /* free the defrag_q queue and return the prframe */ 1092 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue); 1093 1094 return prframe; 1095 } 1096 1097 /* check if need to defrag, if needed queue the frame to defrag_q */ 1098 static union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame) 1099 { 1100 u8 ismfrag; 1101 u8 fragnum; 1102 u8 *psta_addr; 1103 struct recv_frame_hdr *pfhdr; 1104 struct sta_info *psta; 1105 struct sta_priv *pstapriv; 1106 struct list_head *phead; 1107 union recv_frame *prtnframe = NULL; 1108 struct __queue *pfree_recv_queue, *pdefrag_q; 1109 1110 pstapriv = &padapter->stapriv; 1111 1112 pfhdr = &precv_frame->u.hdr; 1113 1114 pfree_recv_queue = &padapter->recvpriv.free_recv_queue; 1115 1116 /* need to define struct of wlan header frame ctrl */ 1117 ismfrag = pfhdr->attrib.mfrag; 1118 fragnum = pfhdr->attrib.frag_num; 1119 1120 psta_addr = pfhdr->attrib.ta; 1121 psta = rtw_get_stainfo(pstapriv, psta_addr); 1122 if (!psta) { 1123 u8 type = GetFrameType(pfhdr->rx_data); 1124 if (type != WIFI_DATA_TYPE) { 1125 psta = rtw_get_bcmc_stainfo(padapter); 1126 pdefrag_q = &psta->sta_recvpriv.defrag_q; 1127 } else 1128 pdefrag_q = NULL; 1129 } else 1130 pdefrag_q = &psta->sta_recvpriv.defrag_q; 1131 1132 if ((ismfrag == 0) && (fragnum == 0)) 1133 prtnframe = precv_frame;/* isn't a fragment frame */ 1134 1135 if (ismfrag == 1) { 1136 /* 0~(n-1) fragment frame */ 1137 /* enqueue to defraf_g */ 1138 if (pdefrag_q) { 1139 if (fragnum == 0) 1140 /* the first fragment */ 1141 if (!list_empty(&pdefrag_q->queue)) 1142 /* free current defrag_q */ 1143 rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue); 1144 1145 1146 /* Then enqueue the 0~(n-1) fragment into the defrag_q */ 1147 1148 /* spin_lock(&pdefrag_q->lock); */ 1149 phead = get_list_head(pdefrag_q); 1150 list_add_tail(&pfhdr->list, phead); 1151 /* spin_unlock(&pdefrag_q->lock); */ 1152 1153 prtnframe = NULL; 1154 1155 } else { 1156 /* can't find this ta's defrag_queue, so free this recv_frame */ 1157 rtw_free_recvframe(precv_frame, pfree_recv_queue); 1158 prtnframe = NULL; 1159 } 1160 1161 } 1162 1163 if ((ismfrag == 0) && (fragnum != 0)) { 1164 /* the last fragment frame */ 1165 /* enqueue the last fragment */ 1166 if (pdefrag_q) { 1167 /* spin_lock(&pdefrag_q->lock); */ 1168 phead = get_list_head(pdefrag_q); 1169 list_add_tail(&pfhdr->list, phead); 1170 /* spin_unlock(&pdefrag_q->lock); */ 1171 1172 /* call recvframe_defrag to defrag */ 1173 precv_frame = recvframe_defrag(padapter, pdefrag_q); 1174 prtnframe = precv_frame; 1175 1176 } else { 1177 /* can't find this ta's defrag_queue, so free this recv_frame */ 1178 rtw_free_recvframe(precv_frame, pfree_recv_queue); 1179 prtnframe = NULL; 1180 } 1181 1182 } 1183 1184 1185 if ((prtnframe) && (prtnframe->u.hdr.attrib.privacy)) { 1186 /* after defrag we must check tkip mic code */ 1187 if (recvframe_chkmic(padapter, prtnframe) == _FAIL) { 1188 rtw_free_recvframe(prtnframe, pfree_recv_queue); 1189 prtnframe = NULL; 1190 } 1191 } 1192 return prtnframe; 1193 } 1194 1195 static signed int validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame) 1196 { 1197 /* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */ 1198 1199 precv_frame = recvframe_chk_defrag(padapter, precv_frame); 1200 if (!precv_frame) 1201 return _SUCCESS; 1202 1203 { 1204 /* for rx pkt statistics */ 1205 struct sta_info *psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->u.hdr.rx_data)); 1206 if (psta) { 1207 psta->sta_stats.rx_mgnt_pkts++; 1208 if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_BEACON) 1209 psta->sta_stats.rx_beacon_pkts++; 1210 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBEREQ) 1211 psta->sta_stats.rx_probereq_pkts++; 1212 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBERSP) { 1213 if (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->u.hdr.rx_data), ETH_ALEN)) 1214 psta->sta_stats.rx_probersp_pkts++; 1215 else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)) || 1216 is_multicast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data))) 1217 psta->sta_stats.rx_probersp_bm_pkts++; 1218 else 1219 psta->sta_stats.rx_probersp_uo_pkts++; 1220 } 1221 } 1222 } 1223 1224 mgt_dispatcher(padapter, precv_frame); 1225 1226 return _SUCCESS; 1227 1228 } 1229 1230 static signed int validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame) 1231 { 1232 u8 bretry; 1233 u8 *psa, *pda, *pbssid; 1234 struct sta_info *psta = NULL; 1235 u8 *ptr = precv_frame->u.hdr.rx_data; 1236 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 1237 struct security_priv *psecuritypriv = &adapter->securitypriv; 1238 signed int ret = _SUCCESS; 1239 1240 bretry = GetRetry(ptr); 1241 pda = get_da(ptr); 1242 psa = get_sa(ptr); 1243 pbssid = get_hdr_bssid(ptr); 1244 1245 if (!pbssid) { 1246 ret = _FAIL; 1247 goto exit; 1248 } 1249 1250 memcpy(pattrib->dst, pda, ETH_ALEN); 1251 memcpy(pattrib->src, psa, ETH_ALEN); 1252 1253 memcpy(pattrib->bssid, pbssid, ETH_ALEN); 1254 1255 switch (pattrib->to_fr_ds) { 1256 case 0: 1257 memcpy(pattrib->ra, pda, ETH_ALEN); 1258 memcpy(pattrib->ta, psa, ETH_ALEN); 1259 ret = sta2sta_data_frame(adapter, precv_frame, &psta); 1260 break; 1261 1262 case 1: 1263 memcpy(pattrib->ra, pda, ETH_ALEN); 1264 memcpy(pattrib->ta, pbssid, ETH_ALEN); 1265 ret = ap2sta_data_frame(adapter, precv_frame, &psta); 1266 break; 1267 1268 case 2: 1269 memcpy(pattrib->ra, pbssid, ETH_ALEN); 1270 memcpy(pattrib->ta, psa, ETH_ALEN); 1271 ret = sta2ap_data_frame(adapter, precv_frame, &psta); 1272 break; 1273 1274 case 3: 1275 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN); 1276 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN); 1277 ret = _FAIL; 1278 break; 1279 1280 default: 1281 ret = _FAIL; 1282 break; 1283 1284 } 1285 1286 if (ret == _FAIL) { 1287 goto exit; 1288 } else if (ret == RTW_RX_HANDLED) { 1289 goto exit; 1290 } 1291 1292 1293 if (!psta) { 1294 ret = _FAIL; 1295 goto exit; 1296 } 1297 1298 /* psta->rssi = prxcmd->rssi; */ 1299 /* psta->signal_quality = prxcmd->sq; */ 1300 precv_frame->u.hdr.psta = psta; 1301 1302 1303 pattrib->amsdu = 0; 1304 pattrib->ack_policy = 0; 1305 /* parsing QC field */ 1306 if (pattrib->qos == 1) { 1307 pattrib->priority = GetPriority((ptr + 24)); 1308 pattrib->ack_policy = GetAckpolicy((ptr + 24)); 1309 pattrib->amsdu = GetAMsdu((ptr + 24)); 1310 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26; 1311 1312 if (pattrib->priority != 0 && pattrib->priority != 3) 1313 adapter->recvpriv.bIsAnyNonBEPkts = true; 1314 1315 } else { 1316 pattrib->priority = 0; 1317 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24; 1318 } 1319 1320 1321 if (pattrib->order)/* HT-CTRL 11n */ 1322 pattrib->hdrlen += 4; 1323 1324 precv_frame->u.hdr.preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority]; 1325 1326 /* decache, drop duplicate recv packets */ 1327 if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) { 1328 ret = _FAIL; 1329 goto exit; 1330 } 1331 1332 if (pattrib->privacy) { 1333 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra)); 1334 1335 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt); 1336 } else { 1337 pattrib->encrypt = 0; 1338 pattrib->iv_len = pattrib->icv_len = 0; 1339 } 1340 1341 exit: 1342 return ret; 1343 } 1344 1345 static signed int validate_80211w_mgmt(struct adapter *adapter, union recv_frame *precv_frame) 1346 { 1347 struct mlme_priv *pmlmepriv = &adapter->mlmepriv; 1348 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 1349 u8 *ptr = precv_frame->u.hdr.rx_data; 1350 u8 subtype; 1351 1352 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */ 1353 1354 /* only support station mode */ 1355 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) && check_fwstate(pmlmepriv, _FW_LINKED) && 1356 adapter->securitypriv.binstallBIPkey == true) { 1357 /* unicast management frame decrypt */ 1358 if (pattrib->privacy && !(IS_MCAST(GetAddr1Ptr(ptr))) && 1359 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC || subtype == WIFI_ACTION)) { 1360 u8 *mgmt_DATA; 1361 u32 data_len = 0; 1362 1363 pattrib->bdecrypted = 0; 1364 pattrib->encrypt = _AES_; 1365 pattrib->hdrlen = sizeof(struct ieee80211_hdr_3addr); 1366 /* set iv and icv length */ 1367 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt); 1368 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN); 1369 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN); 1370 /* actual management data frame body */ 1371 data_len = pattrib->pkt_len - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len; 1372 mgmt_DATA = rtw_zmalloc(data_len); 1373 if (!mgmt_DATA) { 1374 goto validate_80211w_fail; 1375 } 1376 precv_frame = decryptor(adapter, precv_frame); 1377 /* save actual management data frame body */ 1378 memcpy(mgmt_DATA, ptr+pattrib->hdrlen+pattrib->iv_len, data_len); 1379 /* overwrite the iv field */ 1380 memcpy(ptr+pattrib->hdrlen, mgmt_DATA, data_len); 1381 /* remove the iv and icv length */ 1382 pattrib->pkt_len = pattrib->pkt_len - pattrib->iv_len - pattrib->icv_len; 1383 kfree(mgmt_DATA); 1384 if (!precv_frame) { 1385 goto validate_80211w_fail; 1386 } 1387 } else if (IS_MCAST(GetAddr1Ptr(ptr)) && 1388 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC)) { 1389 signed int BIP_ret = _SUCCESS; 1390 /* verify BIP MME IE of broadcast/multicast de-auth/disassoc packet */ 1391 BIP_ret = rtw_BIP_verify(adapter, (u8 *)precv_frame); 1392 if (BIP_ret == _FAIL) { 1393 goto validate_80211w_fail; 1394 } else if (BIP_ret == RTW_RX_HANDLED) { 1395 /* issue sa query request */ 1396 issue_action_SA_Query(adapter, NULL, 0, 0); 1397 goto validate_80211w_fail; 1398 } 1399 } else { /* 802.11w protect */ 1400 if (subtype == WIFI_ACTION) { 1401 /* according 802.11-2012 standard, these five types are not robust types */ 1402 if (ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_PUBLIC && 1403 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_HT && 1404 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_UNPROTECTED_WNM && 1405 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_SELF_PROTECTED && 1406 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_P2P) { 1407 goto validate_80211w_fail; 1408 } 1409 } else if (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC) { 1410 /* issue sa query request */ 1411 issue_action_SA_Query(adapter, NULL, 0, 0); 1412 goto validate_80211w_fail; 1413 } 1414 } 1415 } 1416 return _SUCCESS; 1417 1418 validate_80211w_fail: 1419 return _FAIL; 1420 1421 } 1422 1423 static signed int validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame) 1424 { 1425 /* shall check frame subtype, to / from ds, da, bssid */ 1426 1427 /* then call check if rx seq/frag. duplicated. */ 1428 1429 u8 type; 1430 u8 subtype; 1431 signed int retval = _SUCCESS; 1432 u8 bDumpRxPkt; 1433 1434 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 1435 1436 u8 *ptr = precv_frame->u.hdr.rx_data; 1437 u8 ver = (unsigned char) (*ptr)&0x3; 1438 1439 /* add version chk */ 1440 if (ver != 0) { 1441 retval = _FAIL; 1442 goto exit; 1443 } 1444 1445 type = GetFrameType(ptr); 1446 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */ 1447 1448 pattrib->to_fr_ds = get_tofr_ds(ptr); 1449 1450 pattrib->frag_num = GetFragNum(ptr); 1451 pattrib->seq_num = GetSequence(ptr); 1452 1453 pattrib->pw_save = GetPwrMgt(ptr); 1454 pattrib->mfrag = GetMFrag(ptr); 1455 pattrib->mdata = GetMData(ptr); 1456 pattrib->privacy = GetPrivacy(ptr); 1457 pattrib->order = GetOrder(ptr); 1458 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt)); 1459 1460 switch (type) { 1461 case WIFI_MGT_TYPE: /* mgnt */ 1462 if (validate_80211w_mgmt(adapter, precv_frame) == _FAIL) { 1463 retval = _FAIL; 1464 break; 1465 } 1466 1467 retval = validate_recv_mgnt_frame(adapter, precv_frame); 1468 retval = _FAIL; /* only data frame return _SUCCESS */ 1469 break; 1470 case WIFI_CTRL_TYPE: /* ctrl */ 1471 retval = validate_recv_ctrl_frame(adapter, precv_frame); 1472 retval = _FAIL; /* only data frame return _SUCCESS */ 1473 break; 1474 case WIFI_DATA_TYPE: /* data */ 1475 pattrib->qos = (subtype & BIT(7)) ? 1:0; 1476 retval = validate_recv_data_frame(adapter, precv_frame); 1477 if (retval == _FAIL) { 1478 struct recv_priv *precvpriv = &adapter->recvpriv; 1479 precvpriv->rx_drop++; 1480 } else if (retval == _SUCCESS) { 1481 #ifdef DBG_RX_DUMP_EAP 1482 u8 bDumpRxPkt; 1483 u16 eth_type; 1484 1485 /* dump eapol */ 1486 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt)); 1487 /* get ether_type */ 1488 memcpy(ð_type, ptr + pattrib->hdrlen + pattrib->iv_len + LLC_HEADER_SIZE, 2); 1489 eth_type = ntohs((unsigned short) eth_type); 1490 #endif 1491 } 1492 break; 1493 default: 1494 retval = _FAIL; 1495 break; 1496 } 1497 1498 exit: 1499 return retval; 1500 } 1501 1502 /* remove the wlanhdr and add the eth_hdr */ 1503 static signed int wlanhdr_to_ethhdr(union recv_frame *precvframe) 1504 { 1505 signed int rmv_len; 1506 u16 eth_type, len; 1507 u8 bsnaphdr; 1508 u8 *psnap_type; 1509 struct ieee80211_snap_hdr *psnap; 1510 __be16 be_tmp; 1511 struct adapter *adapter = precvframe->u.hdr.adapter; 1512 struct mlme_priv *pmlmepriv = &adapter->mlmepriv; 1513 u8 *ptr = get_recvframe_data(precvframe) ; /* point to frame_ctrl field */ 1514 struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib; 1515 1516 if (pattrib->encrypt) 1517 recvframe_pull_tail(precvframe, pattrib->icv_len); 1518 1519 psnap = (struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len); 1520 psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE; 1521 /* convert hdr + possible LLC headers into Ethernet header */ 1522 /* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */ 1523 if ((!memcmp(psnap, rfc1042_header, SNAP_SIZE) && 1524 (memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2)) && 1525 (memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2))) || 1526 /* eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || */ 1527 !memcmp(psnap, bridge_tunnel_header, SNAP_SIZE)) { 1528 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */ 1529 bsnaphdr = true; 1530 } else 1531 /* Leave Ethernet header part of hdr and full payload */ 1532 bsnaphdr = false; 1533 1534 rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr?SNAP_SIZE:0); 1535 len = precvframe->u.hdr.len - rmv_len; 1536 1537 memcpy(&be_tmp, ptr+rmv_len, 2); 1538 eth_type = ntohs(be_tmp); /* pattrib->ether_type */ 1539 pattrib->eth_type = eth_type; 1540 1541 if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)) { 1542 ptr += rmv_len; 1543 *ptr = 0x87; 1544 *(ptr+1) = 0x12; 1545 1546 eth_type = 0x8712; 1547 /* append rx status for mp test packets */ 1548 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24); 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 1554 memcpy(ptr, pattrib->dst, ETH_ALEN); 1555 memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN); 1556 1557 if (!bsnaphdr) { 1558 be_tmp = htons(len); 1559 memcpy(ptr+12, &be_tmp, 2); 1560 } 1561 1562 return _SUCCESS; 1563 } 1564 1565 static int amsdu_to_msdu(struct adapter *padapter, union recv_frame *prframe) 1566 { 1567 int a_len, padding_len; 1568 u16 nSubframe_Length; 1569 u8 nr_subframes, i; 1570 u8 *pdata; 1571 struct sk_buff *sub_pkt, *subframes[MAX_SUBFRAME_COUNT]; 1572 struct recv_priv *precvpriv = &padapter->recvpriv; 1573 struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue); 1574 1575 nr_subframes = 0; 1576 1577 recvframe_pull(prframe, prframe->u.hdr.attrib.hdrlen); 1578 1579 if (prframe->u.hdr.attrib.iv_len > 0) 1580 recvframe_pull(prframe, prframe->u.hdr.attrib.iv_len); 1581 1582 a_len = prframe->u.hdr.len; 1583 1584 pdata = prframe->u.hdr.rx_data; 1585 1586 while (a_len > ETH_HLEN) { 1587 1588 /* Offset 12 denote 2 mac address */ 1589 nSubframe_Length = get_unaligned_be16(pdata + 12); 1590 1591 if (a_len < (ETHERNET_HEADER_SIZE + nSubframe_Length)) 1592 break; 1593 1594 sub_pkt = rtw_os_alloc_msdu_pkt(prframe, nSubframe_Length, pdata); 1595 if (!sub_pkt) 1596 break; 1597 1598 /* move the data point to data content */ 1599 pdata += ETH_HLEN; 1600 a_len -= ETH_HLEN; 1601 1602 subframes[nr_subframes++] = sub_pkt; 1603 1604 if (nr_subframes >= MAX_SUBFRAME_COUNT) 1605 break; 1606 1607 pdata += nSubframe_Length; 1608 a_len -= nSubframe_Length; 1609 if (a_len != 0) { 1610 padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1)); 1611 if (padding_len == 4) 1612 padding_len = 0; 1613 1614 if (a_len < padding_len) 1615 break; 1616 1617 pdata += padding_len; 1618 a_len -= padding_len; 1619 } 1620 } 1621 1622 for (i = 0; i < nr_subframes; i++) { 1623 sub_pkt = subframes[i]; 1624 1625 /* Indicate the packets to upper layer */ 1626 if (sub_pkt) 1627 rtw_os_recv_indicate_pkt(padapter, sub_pkt, &prframe->u.hdr.attrib); 1628 } 1629 1630 prframe->u.hdr.len = 0; 1631 rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */ 1632 1633 return _SUCCESS; 1634 } 1635 1636 static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num) 1637 { 1638 struct adapter *padapter = preorder_ctrl->padapter; 1639 struct dvobj_priv *psdpriv = padapter->dvobj; 1640 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg; 1641 u8 wsize = preorder_ctrl->wsize_b; 1642 u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/* 4096; */ 1643 1644 /* Rx Reorder initialize condition. */ 1645 if (preorder_ctrl->indicate_seq == 0xFFFF) { 1646 preorder_ctrl->indicate_seq = seq_num; 1647 } 1648 1649 /* Drop out the packet which SeqNum is smaller than WinStart */ 1650 if (SN_LESS(seq_num, preorder_ctrl->indicate_seq)) { 1651 return false; 1652 } 1653 1654 /* */ 1655 /* Sliding window manipulation. Conditions includes: */ 1656 /* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */ 1657 /* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */ 1658 /* */ 1659 if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) { 1660 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF; 1661 1662 } else if (SN_LESS(wend, seq_num)) { 1663 /* boundary situation, when seq_num cross 0xFFF */ 1664 if (seq_num >= (wsize - 1)) 1665 preorder_ctrl->indicate_seq = seq_num + 1 - wsize; 1666 else 1667 preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1; 1668 pdbgpriv->dbg_rx_ampdu_window_shift_cnt++; 1669 } 1670 1671 return true; 1672 } 1673 1674 static int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe) 1675 { 1676 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; 1677 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; 1678 struct list_head *phead, *plist; 1679 union recv_frame *pnextrframe; 1680 struct rx_pkt_attrib *pnextattrib; 1681 1682 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */ 1683 /* spin_lock(&ppending_recvframe_queue->lock); */ 1684 1685 1686 phead = get_list_head(ppending_recvframe_queue); 1687 plist = get_next(phead); 1688 1689 while (phead != plist) { 1690 pnextrframe = (union recv_frame *)plist; 1691 pnextattrib = &pnextrframe->u.hdr.attrib; 1692 1693 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num)) 1694 plist = get_next(plist); 1695 else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num)) 1696 /* Duplicate entry is found!! Do not insert current entry. */ 1697 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */ 1698 return false; 1699 else 1700 break; 1701 1702 } 1703 1704 1705 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */ 1706 /* spin_lock(&ppending_recvframe_queue->lock); */ 1707 1708 list_del_init(&(prframe->u.hdr.list)); 1709 1710 list_add_tail(&(prframe->u.hdr.list), plist); 1711 1712 /* spin_unlock(&ppending_recvframe_queue->lock); */ 1713 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */ 1714 1715 return true; 1716 1717 } 1718 1719 static void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq) 1720 { 1721 if (current_seq < prev_seq) 1722 pdbgpriv->dbg_rx_ampdu_loss_count += (4096 + current_seq - prev_seq); 1723 else 1724 pdbgpriv->dbg_rx_ampdu_loss_count += (current_seq - prev_seq); 1725 1726 } 1727 1728 static int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced) 1729 { 1730 struct list_head *phead, *plist; 1731 union recv_frame *prframe; 1732 struct rx_pkt_attrib *pattrib; 1733 /* u8 index = 0; */ 1734 int bPktInBuf = false; 1735 struct recv_priv *precvpriv = &padapter->recvpriv; 1736 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; 1737 struct dvobj_priv *psdpriv = padapter->dvobj; 1738 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg; 1739 1740 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */ 1741 /* spin_lock(&ppending_recvframe_queue->lock); */ 1742 1743 phead = get_list_head(ppending_recvframe_queue); 1744 plist = get_next(phead); 1745 1746 /* Handling some condition for forced indicate case. */ 1747 if (bforced == true) { 1748 pdbgpriv->dbg_rx_ampdu_forced_indicate_count++; 1749 if (list_empty(phead)) { 1750 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */ 1751 /* spin_unlock(&ppending_recvframe_queue->lock); */ 1752 return true; 1753 } 1754 1755 prframe = (union recv_frame *)plist; 1756 pattrib = &prframe->u.hdr.attrib; 1757 1758 recv_indicatepkts_pkt_loss_cnt(pdbgpriv, preorder_ctrl->indicate_seq, pattrib->seq_num); 1759 preorder_ctrl->indicate_seq = pattrib->seq_num; 1760 1761 } 1762 1763 /* Prepare indication list and indication. */ 1764 /* Check if there is any packet need indicate. */ 1765 while (!list_empty(phead)) { 1766 1767 prframe = (union recv_frame *)plist; 1768 pattrib = &prframe->u.hdr.attrib; 1769 1770 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) { 1771 plist = get_next(plist); 1772 list_del_init(&(prframe->u.hdr.list)); 1773 1774 if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num)) 1775 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF; 1776 1777 /* Set this as a lock to make sure that only one thread is indicating packet. */ 1778 /* pTS->RxIndicateState = RXTS_INDICATE_PROCESSING; */ 1779 1780 /* Indicate packets */ 1781 1782 /* indicate this recv_frame */ 1783 if (!pattrib->amsdu) { 1784 if ((padapter->bDriverStopped == false) && 1785 (padapter->bSurpriseRemoved == false)) 1786 rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */ 1787 1788 } else if (pattrib->amsdu == 1) { 1789 if (amsdu_to_msdu(padapter, prframe) != _SUCCESS) 1790 rtw_free_recvframe(prframe, &precvpriv->free_recv_queue); 1791 1792 } else { 1793 /* error condition; */ 1794 } 1795 1796 1797 /* Update local variables. */ 1798 bPktInBuf = false; 1799 1800 } else { 1801 bPktInBuf = true; 1802 break; 1803 } 1804 1805 } 1806 1807 /* spin_unlock(&ppending_recvframe_queue->lock); */ 1808 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */ 1809 1810 return bPktInBuf; 1811 } 1812 1813 static int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe) 1814 { 1815 int retval = _SUCCESS; 1816 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; 1817 struct recv_reorder_ctrl *preorder_ctrl = prframe->u.hdr.preorder_ctrl; 1818 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; 1819 struct dvobj_priv *psdpriv = padapter->dvobj; 1820 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg; 1821 1822 if (!pattrib->amsdu) { 1823 /* s1. */ 1824 wlanhdr_to_ethhdr(prframe); 1825 1826 if (pattrib->qos != 1) { 1827 if ((padapter->bDriverStopped == false) && 1828 (padapter->bSurpriseRemoved == false)) { 1829 rtw_recv_indicatepkt(padapter, prframe); 1830 return _SUCCESS; 1831 1832 } 1833 1834 return _FAIL; 1835 1836 } 1837 1838 if (preorder_ctrl->enable == false) { 1839 /* indicate this recv_frame */ 1840 preorder_ctrl->indicate_seq = pattrib->seq_num; 1841 1842 rtw_recv_indicatepkt(padapter, prframe); 1843 1844 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096; 1845 1846 return _SUCCESS; 1847 } 1848 } else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */ 1849 if (preorder_ctrl->enable == false) { 1850 preorder_ctrl->indicate_seq = pattrib->seq_num; 1851 1852 retval = amsdu_to_msdu(padapter, prframe); 1853 1854 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096; 1855 1856 if (retval != _SUCCESS) { 1857 } 1858 1859 return retval; 1860 } 1861 } 1862 1863 spin_lock_bh(&ppending_recvframe_queue->lock); 1864 1865 /* s2. check if winstart_b(indicate_seq) needs to been updated */ 1866 if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) { 1867 pdbgpriv->dbg_rx_ampdu_drop_count++; 1868 goto _err_exit; 1869 } 1870 1871 1872 /* s3. Insert all packet into Reorder Queue to maintain its ordering. */ 1873 if (!enqueue_reorder_recvframe(preorder_ctrl, prframe)) { 1874 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */ 1875 /* return _FAIL; */ 1876 goto _err_exit; 1877 } 1878 1879 1880 /* s4. */ 1881 /* Indication process. */ 1882 /* After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */ 1883 /* with the SeqNum smaller than latest WinStart and buffer other packets. */ 1884 /* */ 1885 /* For Rx Reorder condition: */ 1886 /* 1. All packets with SeqNum smaller than WinStart => Indicate */ 1887 /* 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */ 1888 /* */ 1889 1890 /* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */ 1891 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false) == true) { 1892 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME); 1893 spin_unlock_bh(&ppending_recvframe_queue->lock); 1894 } else { 1895 spin_unlock_bh(&ppending_recvframe_queue->lock); 1896 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer); 1897 } 1898 1899 return _SUCCESS; 1900 1901 _err_exit: 1902 spin_unlock_bh(&ppending_recvframe_queue->lock); 1903 1904 return _FAIL; 1905 } 1906 1907 1908 void rtw_reordering_ctrl_timeout_handler(struct timer_list *t) 1909 { 1910 struct recv_reorder_ctrl *preorder_ctrl = 1911 from_timer(preorder_ctrl, t, reordering_ctrl_timer); 1912 struct adapter *padapter = preorder_ctrl->padapter; 1913 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; 1914 1915 1916 if (padapter->bDriverStopped || padapter->bSurpriseRemoved) 1917 return; 1918 1919 spin_lock_bh(&ppending_recvframe_queue->lock); 1920 1921 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true) 1922 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME); 1923 1924 spin_unlock_bh(&ppending_recvframe_queue->lock); 1925 1926 } 1927 1928 static int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe) 1929 { 1930 int retval = _SUCCESS; 1931 /* struct recv_priv *precvpriv = &padapter->recvpriv; */ 1932 /* struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; */ 1933 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 1934 struct ht_priv *phtpriv = &pmlmepriv->htpriv; 1935 1936 if (phtpriv->ht_option == true) { /* B/G/N Mode */ 1937 /* prframe->u.hdr.preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */ 1938 1939 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) { /* including perform A-MPDU Rx Ordering Buffer Control */ 1940 1941 if ((padapter->bDriverStopped == false) && 1942 (padapter->bSurpriseRemoved == false)) { 1943 retval = _FAIL; 1944 return retval; 1945 } 1946 } 1947 } else { /* B/G mode */ 1948 retval = wlanhdr_to_ethhdr(prframe); 1949 if (retval != _SUCCESS) 1950 return retval; 1951 1952 if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) { 1953 /* indicate this recv_frame */ 1954 rtw_recv_indicatepkt(padapter, prframe); 1955 } else { 1956 retval = _FAIL; 1957 return retval; 1958 } 1959 1960 } 1961 1962 return retval; 1963 1964 } 1965 1966 static int recv_func_prehandle(struct adapter *padapter, union recv_frame *rframe) 1967 { 1968 int ret = _SUCCESS; 1969 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue; 1970 1971 /* check the frame crtl field and decache */ 1972 ret = validate_recv_frame(padapter, rframe); 1973 if (ret != _SUCCESS) { 1974 rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */ 1975 goto exit; 1976 } 1977 1978 exit: 1979 return ret; 1980 } 1981 1982 static int recv_func_posthandle(struct adapter *padapter, union recv_frame *prframe) 1983 { 1984 int ret = _SUCCESS; 1985 union recv_frame *orig_prframe = prframe; 1986 struct recv_priv *precvpriv = &padapter->recvpriv; 1987 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue; 1988 1989 prframe = decryptor(padapter, prframe); 1990 if (!prframe) { 1991 ret = _FAIL; 1992 goto _recv_data_drop; 1993 } 1994 1995 prframe = recvframe_chk_defrag(padapter, prframe); 1996 if (!prframe) 1997 goto _recv_data_drop; 1998 1999 prframe = portctrl(padapter, prframe); 2000 if (!prframe) { 2001 ret = _FAIL; 2002 goto _recv_data_drop; 2003 } 2004 2005 count_rx_stats(padapter, prframe, NULL); 2006 2007 ret = process_recv_indicatepkts(padapter, prframe); 2008 if (ret != _SUCCESS) { 2009 rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */ 2010 goto _recv_data_drop; 2011 } 2012 2013 _recv_data_drop: 2014 precvpriv->rx_drop++; 2015 return ret; 2016 } 2017 2018 static int recv_func(struct adapter *padapter, union recv_frame *rframe) 2019 { 2020 int ret; 2021 struct rx_pkt_attrib *prxattrib = &rframe->u.hdr.attrib; 2022 struct recv_priv *recvpriv = &padapter->recvpriv; 2023 struct security_priv *psecuritypriv = &padapter->securitypriv; 2024 struct mlme_priv *mlmepriv = &padapter->mlmepriv; 2025 2026 /* check if need to handle uc_swdec_pending_queue*/ 2027 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) { 2028 union recv_frame *pending_frame; 2029 int cnt = 0; 2030 2031 while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) { 2032 cnt++; 2033 recv_func_posthandle(padapter, pending_frame); 2034 } 2035 } 2036 2037 ret = recv_func_prehandle(padapter, rframe); 2038 2039 if (ret == _SUCCESS) { 2040 2041 /* check if need to enqueue into uc_swdec_pending_queue*/ 2042 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && 2043 !IS_MCAST(prxattrib->ra) && prxattrib->encrypt > 0 && 2044 (prxattrib->bdecrypted == 0 || psecuritypriv->sw_decrypt == true) && 2045 psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK && 2046 !psecuritypriv->busetkipkey) { 2047 rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue); 2048 2049 if (recvpriv->free_recvframe_cnt < NR_RECVFRAME/4) { 2050 /* to prevent from recvframe starvation, get recvframe from uc_swdec_pending_queue to free_recvframe_cnt */ 2051 rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue); 2052 if (rframe) 2053 goto do_posthandle; 2054 } 2055 goto exit; 2056 } 2057 2058 do_posthandle: 2059 ret = recv_func_posthandle(padapter, rframe); 2060 } 2061 2062 exit: 2063 return ret; 2064 } 2065 2066 2067 s32 rtw_recv_entry(union recv_frame *precvframe) 2068 { 2069 struct adapter *padapter; 2070 struct recv_priv *precvpriv; 2071 s32 ret = _SUCCESS; 2072 2073 padapter = precvframe->u.hdr.adapter; 2074 2075 precvpriv = &padapter->recvpriv; 2076 2077 ret = recv_func(padapter, precvframe); 2078 if (ret == _FAIL) { 2079 goto _recv_entry_drop; 2080 } 2081 2082 2083 precvpriv->rx_pkts++; 2084 2085 return ret; 2086 2087 _recv_entry_drop: 2088 2089 return ret; 2090 } 2091 2092 static void rtw_signal_stat_timer_hdl(struct timer_list *t) 2093 { 2094 struct adapter *adapter = 2095 from_timer(adapter, t, recvpriv.signal_stat_timer); 2096 struct recv_priv *recvpriv = &adapter->recvpriv; 2097 2098 u32 tmp_s, tmp_q; 2099 u8 avg_signal_strength = 0; 2100 u8 avg_signal_qual = 0; 2101 u32 num_signal_strength = 0; 2102 u32 __maybe_unused num_signal_qual = 0; 2103 u8 _alpha = 5; /* this value is based on converging_constant = 5000 and sampling_interval = 1000 */ 2104 2105 if (adapter->recvpriv.is_signal_dbg) { 2106 /* update the user specific value, signal_strength_dbg, to signal_strength, rssi */ 2107 adapter->recvpriv.signal_strength = adapter->recvpriv.signal_strength_dbg; 2108 adapter->recvpriv.rssi = (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg); 2109 } else { 2110 2111 if (recvpriv->signal_strength_data.update_req == 0) {/* update_req is clear, means we got rx */ 2112 avg_signal_strength = recvpriv->signal_strength_data.avg_val; 2113 num_signal_strength = recvpriv->signal_strength_data.total_num; 2114 /* after avg_vals are acquired, we can re-stat the signal values */ 2115 recvpriv->signal_strength_data.update_req = 1; 2116 } 2117 2118 if (recvpriv->signal_qual_data.update_req == 0) {/* update_req is clear, means we got rx */ 2119 avg_signal_qual = recvpriv->signal_qual_data.avg_val; 2120 num_signal_qual = recvpriv->signal_qual_data.total_num; 2121 /* after avg_vals are acquired, we can re-stat the signal values */ 2122 recvpriv->signal_qual_data.update_req = 1; 2123 } 2124 2125 if (num_signal_strength == 0) { 2126 if (rtw_get_on_cur_ch_time(adapter) == 0 || 2127 jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) < 2 * adapter->mlmeextpriv.mlmext_info.bcn_interval 2128 ) { 2129 goto set_timer; 2130 } 2131 } 2132 2133 if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == true || 2134 check_fwstate(&adapter->mlmepriv, _FW_LINKED) == false 2135 ) { 2136 goto set_timer; 2137 } 2138 2139 /* update value of signal_strength, rssi, signal_qual */ 2140 tmp_s = (avg_signal_strength+(_alpha-1)*recvpriv->signal_strength); 2141 if (tmp_s % _alpha) 2142 tmp_s = tmp_s/_alpha + 1; 2143 else 2144 tmp_s = tmp_s/_alpha; 2145 if (tmp_s > 100) 2146 tmp_s = 100; 2147 2148 tmp_q = (avg_signal_qual+(_alpha-1)*recvpriv->signal_qual); 2149 if (tmp_q % _alpha) 2150 tmp_q = tmp_q/_alpha + 1; 2151 else 2152 tmp_q = tmp_q/_alpha; 2153 if (tmp_q > 100) 2154 tmp_q = 100; 2155 2156 recvpriv->signal_strength = tmp_s; 2157 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s); 2158 recvpriv->signal_qual = tmp_q; 2159 } 2160 2161 set_timer: 2162 rtw_set_signal_stat_timer(recvpriv); 2163 2164 } 2165