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 signed int rtw_enqueue_recvframe(union recv_frame *precvframe, struct __queue *queue) 207 { 208 return rtw_free_recvframe(precvframe, queue); 209 } 210 */ 211 212 213 214 215 /* 216 caller : defrag ; recvframe_chk_defrag in recv_thread (passive) 217 pframequeue: defrag_queue : will be accessed in recv_thread (passive) 218 219 using spinlock to protect 220 221 */ 222 223 void rtw_free_recvframe_queue(struct __queue *pframequeue, struct __queue *pfree_recv_queue) 224 { 225 union recv_frame *precvframe; 226 struct list_head *plist, *phead; 227 228 spin_lock(&pframequeue->lock); 229 230 phead = get_list_head(pframequeue); 231 plist = get_next(phead); 232 233 while (phead != plist) { 234 precvframe = (union recv_frame *)plist; 235 236 plist = get_next(plist); 237 238 rtw_free_recvframe(precvframe, pfree_recv_queue); 239 } 240 241 spin_unlock(&pframequeue->lock); 242 } 243 244 u32 rtw_free_uc_swdec_pending_queue(struct adapter *adapter) 245 { 246 u32 cnt = 0; 247 union recv_frame *pending_frame; 248 while ((pending_frame = rtw_alloc_recvframe(&adapter->recvpriv.uc_swdec_pending_queue))) { 249 rtw_free_recvframe(pending_frame, &adapter->recvpriv.free_recv_queue); 250 cnt++; 251 } 252 253 return cnt; 254 } 255 256 257 signed int rtw_enqueue_recvbuf_to_head(struct recv_buf *precvbuf, struct __queue *queue) 258 { 259 spin_lock_bh(&queue->lock); 260 261 list_del_init(&precvbuf->list); 262 list_add(&precvbuf->list, get_list_head(queue)); 263 264 spin_unlock_bh(&queue->lock); 265 266 return _SUCCESS; 267 } 268 269 signed int rtw_enqueue_recvbuf(struct recv_buf *precvbuf, struct __queue *queue) 270 { 271 spin_lock_bh(&queue->lock); 272 273 list_del_init(&precvbuf->list); 274 275 list_add_tail(&precvbuf->list, get_list_head(queue)); 276 spin_unlock_bh(&queue->lock); 277 return _SUCCESS; 278 279 } 280 281 struct recv_buf *rtw_dequeue_recvbuf(struct __queue *queue) 282 { 283 struct recv_buf *precvbuf; 284 struct list_head *plist, *phead; 285 286 spin_lock_bh(&queue->lock); 287 288 if (list_empty(&queue->queue)) 289 precvbuf = NULL; 290 else { 291 phead = get_list_head(queue); 292 293 plist = get_next(phead); 294 295 precvbuf = container_of(plist, struct recv_buf, list); 296 297 list_del_init(&precvbuf->list); 298 299 } 300 301 spin_unlock_bh(&queue->lock); 302 303 return precvbuf; 304 305 } 306 307 static signed int recvframe_chkmic(struct adapter *adapter, union recv_frame *precvframe) 308 { 309 310 signed int i, res = _SUCCESS; 311 u32 datalen; 312 u8 miccode[8]; 313 u8 bmic_err = false, brpt_micerror = true; 314 u8 *pframe, *payload, *pframemic; 315 u8 *mickey; 316 /* u8 *iv, rxdata_key_idx = 0; */ 317 struct sta_info *stainfo; 318 struct rx_pkt_attrib *prxattrib = &precvframe->u.hdr.attrib; 319 struct security_priv *psecuritypriv = &adapter->securitypriv; 320 321 struct mlme_ext_priv *pmlmeext = &adapter->mlmeextpriv; 322 struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info); 323 324 stainfo = rtw_get_stainfo(&adapter->stapriv, &prxattrib->ta[0]); 325 326 if (prxattrib->encrypt == _TKIP_) { 327 /* calculate mic code */ 328 if (stainfo) { 329 if (IS_MCAST(prxattrib->ra)) { 330 /* mickey =&psecuritypriv->dot118021XGrprxmickey.skey[0]; */ 331 /* iv = precvframe->u.hdr.rx_data+prxattrib->hdrlen; */ 332 /* rxdata_key_idx =(((iv[3])>>6)&0x3) ; */ 333 mickey = &psecuritypriv->dot118021XGrprxmickey[prxattrib->key_index].skey[0]; 334 335 /* psecuritypriv->dot118021XGrpKeyid, pmlmeinfo->key_index, rxdata_key_idx); */ 336 337 if (psecuritypriv->binstallGrpkey == false) { 338 res = _FAIL; 339 goto exit; 340 } 341 } else { 342 mickey = &stainfo->dot11tkiprxmickey.skey[0]; 343 } 344 345 datalen = precvframe->u.hdr.len-prxattrib->hdrlen-prxattrib->iv_len-prxattrib->icv_len-8;/* icv_len included the mic code */ 346 pframe = precvframe->u.hdr.rx_data; 347 payload = pframe+prxattrib->hdrlen+prxattrib->iv_len; 348 349 rtw_seccalctkipmic(mickey, pframe, payload, datalen, &miccode[0], (unsigned char)prxattrib->priority); /* care the length of the data */ 350 351 pframemic = payload+datalen; 352 353 bmic_err = false; 354 355 for (i = 0; i < 8; i++) { 356 if (miccode[i] != *(pframemic + i)) 357 bmic_err = true; 358 } 359 360 361 if (bmic_err == true) { 362 /* double check key_index for some timing issue , */ 363 /* cannot compare with psecuritypriv->dot118021XGrpKeyid also cause timing issue */ 364 if ((IS_MCAST(prxattrib->ra) == true) && (prxattrib->key_index != pmlmeinfo->key_index)) 365 brpt_micerror = false; 366 367 if (prxattrib->bdecrypted && brpt_micerror) 368 rtw_handle_tkip_mic_err(adapter, (u8)IS_MCAST(prxattrib->ra)); 369 370 res = _FAIL; 371 372 } else { 373 /* mic checked ok */ 374 if (!psecuritypriv->bcheck_grpkey && 375 IS_MCAST(prxattrib->ra)) 376 psecuritypriv->bcheck_grpkey = true; 377 } 378 } 379 380 recvframe_pull_tail(precvframe, 8); 381 382 } 383 384 exit: 385 return res; 386 387 } 388 389 /* decrypt and set the ivlen, icvlen of the recv_frame */ 390 static union recv_frame *decryptor(struct adapter *padapter, union recv_frame *precv_frame) 391 { 392 393 struct rx_pkt_attrib *prxattrib = &precv_frame->u.hdr.attrib; 394 struct security_priv *psecuritypriv = &padapter->securitypriv; 395 union recv_frame *return_packet = precv_frame; 396 u32 res = _SUCCESS; 397 398 if (prxattrib->encrypt > 0) { 399 u8 *iv = precv_frame->u.hdr.rx_data+prxattrib->hdrlen; 400 prxattrib->key_index = (((iv[3])>>6)&0x3); 401 402 if (prxattrib->key_index > WEP_KEYS) { 403 switch (prxattrib->encrypt) { 404 case _WEP40_: 405 case _WEP104_: 406 prxattrib->key_index = psecuritypriv->dot11PrivacyKeyIndex; 407 break; 408 case _TKIP_: 409 case _AES_: 410 default: 411 prxattrib->key_index = psecuritypriv->dot118021XGrpKeyid; 412 break; 413 } 414 } 415 } 416 417 if ((prxattrib->encrypt > 0) && ((prxattrib->bdecrypted == 0) || (psecuritypriv->sw_decrypt == true))) { 418 psecuritypriv->hw_decrypted = false; 419 420 switch (prxattrib->encrypt) { 421 case _WEP40_: 422 case _WEP104_: 423 rtw_wep_decrypt(padapter, (u8 *)precv_frame); 424 break; 425 case _TKIP_: 426 res = rtw_tkip_decrypt(padapter, (u8 *)precv_frame); 427 break; 428 case _AES_: 429 res = rtw_aes_decrypt(padapter, (u8 *)precv_frame); 430 break; 431 default: 432 break; 433 } 434 } else if (prxattrib->bdecrypted == 1 && prxattrib->encrypt > 0 && 435 (psecuritypriv->busetkipkey == 1 || prxattrib->encrypt != _TKIP_) 436 ) { 437 psecuritypriv->hw_decrypted = true; 438 } else { 439 } 440 441 if (res == _FAIL) { 442 rtw_free_recvframe(return_packet, &padapter->recvpriv.free_recv_queue); 443 return_packet = NULL; 444 } else 445 prxattrib->bdecrypted = true; 446 447 return return_packet; 448 } 449 450 /* set the security information in the recv_frame */ 451 static union recv_frame *portctrl(struct adapter *adapter, union recv_frame *precv_frame) 452 { 453 u8 *psta_addr = NULL; 454 u8 *ptr; 455 uint auth_alg; 456 struct recv_frame_hdr *pfhdr; 457 struct sta_info *psta; 458 struct sta_priv *pstapriv; 459 union recv_frame *prtnframe; 460 u16 ether_type = 0; 461 u16 eapol_type = 0x888e;/* for Funia BD's WPA issue */ 462 struct rx_pkt_attrib *pattrib; 463 464 pstapriv = &adapter->stapriv; 465 466 auth_alg = adapter->securitypriv.dot11AuthAlgrthm; 467 468 ptr = precv_frame->u.hdr.rx_data; 469 pfhdr = &precv_frame->u.hdr; 470 pattrib = &pfhdr->attrib; 471 psta_addr = pattrib->ta; 472 473 prtnframe = NULL; 474 475 psta = rtw_get_stainfo(pstapriv, psta_addr); 476 477 if (auth_alg == 2) { 478 if ((psta) && (psta->ieee8021x_blocked)) { 479 __be16 be_tmp; 480 481 /* blocked */ 482 /* only accept EAPOL frame */ 483 484 prtnframe = precv_frame; 485 486 /* get ether_type */ 487 ptr = ptr + pfhdr->attrib.hdrlen + pfhdr->attrib.iv_len + LLC_HEADER_LENGTH; 488 memcpy(&be_tmp, ptr, 2); 489 ether_type = ntohs(be_tmp); 490 491 if (ether_type == eapol_type) 492 prtnframe = precv_frame; 493 else { 494 /* free this frame */ 495 rtw_free_recvframe(precv_frame, &adapter->recvpriv.free_recv_queue); 496 prtnframe = NULL; 497 } 498 } else { 499 /* allowed */ 500 /* check decryption status, and decrypt the frame if needed */ 501 502 prtnframe = precv_frame; 503 /* check is the EAPOL frame or not (Rekey) */ 504 /* if (ether_type == eapol_type) { */ 505 /* check Rekey */ 506 507 /* prtnframe =precv_frame; */ 508 /* */ 509 /* else { */ 510 /* */ 511 } 512 } else 513 prtnframe = precv_frame; 514 515 return prtnframe; 516 } 517 518 static signed int recv_decache(union recv_frame *precv_frame, u8 bretry, struct stainfo_rxcache *prxcache) 519 { 520 signed int tid = precv_frame->u.hdr.attrib.priority; 521 522 u16 seq_ctrl = ((precv_frame->u.hdr.attrib.seq_num&0xffff) << 4) | 523 (precv_frame->u.hdr.attrib.frag_num & 0xf); 524 525 if (tid > 15) 526 return _FAIL; 527 528 if (1) { /* if (bretry) */ 529 if (seq_ctrl == prxcache->tid_rxseq[tid]) 530 return _FAIL; 531 } 532 533 prxcache->tid_rxseq[tid] = seq_ctrl; 534 535 return _SUCCESS; 536 537 } 538 539 static void process_pwrbit_data(struct adapter *padapter, union recv_frame *precv_frame) 540 { 541 unsigned char pwrbit; 542 u8 *ptr = precv_frame->u.hdr.rx_data; 543 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 544 struct sta_priv *pstapriv = &padapter->stapriv; 545 struct sta_info *psta = NULL; 546 547 psta = rtw_get_stainfo(pstapriv, pattrib->src); 548 549 pwrbit = GetPwrMgt(ptr); 550 551 if (psta) { 552 if (pwrbit) { 553 if (!(psta->state & WIFI_SLEEP_STATE)) { 554 /* psta->state |= WIFI_SLEEP_STATE; */ 555 /* pstapriv->sta_dz_bitmap |= BIT(psta->aid); */ 556 557 stop_sta_xmit(padapter, psta); 558 559 } 560 } else { 561 if (psta->state & WIFI_SLEEP_STATE) { 562 /* psta->state ^= WIFI_SLEEP_STATE; */ 563 /* pstapriv->sta_dz_bitmap &= ~BIT(psta->aid); */ 564 565 wakeup_sta_to_xmit(padapter, psta); 566 } 567 } 568 569 } 570 } 571 572 static void process_wmmps_data(struct adapter *padapter, union recv_frame *precv_frame) 573 { 574 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 575 struct sta_priv *pstapriv = &padapter->stapriv; 576 struct sta_info *psta = NULL; 577 578 psta = rtw_get_stainfo(pstapriv, pattrib->src); 579 580 if (!psta) 581 return; 582 583 if (!psta->qos_option) 584 return; 585 586 if (!(psta->qos_info&0xf)) 587 return; 588 589 if (psta->state&WIFI_SLEEP_STATE) { 590 u8 wmmps_ac = 0; 591 592 switch (pattrib->priority) { 593 case 1: 594 case 2: 595 wmmps_ac = psta->uapsd_bk&BIT(1); 596 break; 597 case 4: 598 case 5: 599 wmmps_ac = psta->uapsd_vi&BIT(1); 600 break; 601 case 6: 602 case 7: 603 wmmps_ac = psta->uapsd_vo&BIT(1); 604 break; 605 case 0: 606 case 3: 607 default: 608 wmmps_ac = psta->uapsd_be&BIT(1); 609 break; 610 } 611 612 if (wmmps_ac) { 613 if (psta->sleepq_ac_len > 0) 614 /* process received triggered frame */ 615 xmit_delivery_enabled_frames(padapter, psta); 616 else 617 /* issue one qos null frame with More data bit = 0 and the EOSP bit set (= 1) */ 618 issue_qos_nulldata(padapter, psta->hwaddr, (u16)pattrib->priority, 0, 0); 619 } 620 } 621 } 622 623 static void count_rx_stats(struct adapter *padapter, union recv_frame *prframe, struct sta_info *sta) 624 { 625 int sz; 626 struct sta_info *psta = NULL; 627 struct stainfo_stats *pstats = NULL; 628 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; 629 struct recv_priv *precvpriv = &padapter->recvpriv; 630 631 sz = get_recvframe_len(prframe); 632 precvpriv->rx_bytes += sz; 633 634 padapter->mlmepriv.LinkDetectInfo.NumRxOkInPeriod++; 635 636 if ((!MacAddr_isBcst(pattrib->dst)) && (!IS_MCAST(pattrib->dst))) 637 padapter->mlmepriv.LinkDetectInfo.NumRxUnicastOkInPeriod++; 638 639 if (sta) 640 psta = sta; 641 else 642 psta = prframe->u.hdr.psta; 643 644 if (psta) { 645 pstats = &psta->sta_stats; 646 647 pstats->rx_data_pkts++; 648 pstats->rx_bytes += sz; 649 } 650 651 traffic_check_for_leave_lps(padapter, false, 0); 652 } 653 654 static signed int sta2sta_data_frame(struct adapter *adapter, union recv_frame *precv_frame, 655 struct sta_info **psta) 656 { 657 u8 *ptr = precv_frame->u.hdr.rx_data; 658 signed int ret = _SUCCESS; 659 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 660 struct sta_priv *pstapriv = &adapter->stapriv; 661 struct mlme_priv *pmlmepriv = &adapter->mlmepriv; 662 u8 *mybssid = get_bssid(pmlmepriv); 663 u8 *myhwaddr = myid(&adapter->eeprompriv); 664 u8 *sta_addr = NULL; 665 signed int bmcast = IS_MCAST(pattrib->dst); 666 667 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) || 668 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) { 669 670 /* filter packets that SA is myself or multicast or broadcast */ 671 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) { 672 ret = _FAIL; 673 goto exit; 674 } 675 676 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) { 677 ret = _FAIL; 678 goto exit; 679 } 680 681 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) || 682 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) || 683 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) { 684 ret = _FAIL; 685 goto exit; 686 } 687 688 sta_addr = pattrib->src; 689 690 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) { 691 /* For Station mode, sa and bssid should always be BSSID, and DA is my mac-address */ 692 if (memcmp(pattrib->bssid, pattrib->src, ETH_ALEN)) { 693 ret = _FAIL; 694 goto exit; 695 } 696 697 sta_addr = pattrib->bssid; 698 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) { 699 if (bmcast) { 700 /* For AP mode, if DA == MCAST, then BSSID should be also MCAST */ 701 if (!IS_MCAST(pattrib->bssid)) { 702 ret = _FAIL; 703 goto exit; 704 } 705 } else { /* not mc-frame */ 706 /* For AP mode, if DA is non-MCAST, then it must be BSSID, and bssid == BSSID */ 707 if (memcmp(pattrib->bssid, pattrib->dst, ETH_ALEN)) { 708 ret = _FAIL; 709 goto exit; 710 } 711 712 sta_addr = pattrib->src; 713 } 714 715 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) { 716 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN); 717 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN); 718 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN); 719 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 720 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 721 722 sta_addr = mybssid; 723 } else 724 ret = _FAIL; 725 726 727 728 if (bmcast) 729 *psta = rtw_get_bcmc_stainfo(adapter); 730 else 731 *psta = rtw_get_stainfo(pstapriv, sta_addr); /* get ap_info */ 732 733 if (!*psta) { 734 ret = _FAIL; 735 goto exit; 736 } 737 738 exit: 739 return ret; 740 } 741 742 static signed int ap2sta_data_frame(struct adapter *adapter, union recv_frame *precv_frame, 743 struct sta_info **psta) 744 { 745 u8 *ptr = precv_frame->u.hdr.rx_data; 746 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 747 signed int ret = _SUCCESS; 748 struct sta_priv *pstapriv = &adapter->stapriv; 749 struct mlme_priv *pmlmepriv = &adapter->mlmepriv; 750 u8 *mybssid = get_bssid(pmlmepriv); 751 u8 *myhwaddr = myid(&adapter->eeprompriv); 752 signed int bmcast = IS_MCAST(pattrib->dst); 753 754 if ((check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) && 755 (check_fwstate(pmlmepriv, _FW_LINKED) == true || 756 check_fwstate(pmlmepriv, _FW_UNDER_LINKING) == true) 757 ) { 758 759 /* filter packets that SA is myself or multicast or broadcast */ 760 if (!memcmp(myhwaddr, pattrib->src, ETH_ALEN)) { 761 ret = _FAIL; 762 goto exit; 763 } 764 765 /* da should be for me */ 766 if ((memcmp(myhwaddr, pattrib->dst, ETH_ALEN)) && (!bmcast)) { 767 ret = _FAIL; 768 goto exit; 769 } 770 771 772 /* check BSSID */ 773 if (!memcmp(pattrib->bssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) || 774 !memcmp(mybssid, "\x0\x0\x0\x0\x0\x0", ETH_ALEN) || 775 (memcmp(pattrib->bssid, mybssid, ETH_ALEN))) { 776 777 if (!bmcast) 778 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 779 780 ret = _FAIL; 781 goto exit; 782 } 783 784 if (bmcast) 785 *psta = rtw_get_bcmc_stainfo(adapter); 786 else 787 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get ap_info */ 788 789 if (!*psta) { 790 ret = _FAIL; 791 goto exit; 792 } 793 794 if (GetFrameSubType(ptr) & BIT(6)) { 795 /* No data, will not indicate to upper layer, temporily count it here */ 796 count_rx_stats(adapter, precv_frame, *psta); 797 ret = RTW_RX_HANDLED; 798 goto exit; 799 } 800 801 } else if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) && 802 (check_fwstate(pmlmepriv, _FW_LINKED) == true)) { 803 memcpy(pattrib->dst, GetAddr1Ptr(ptr), ETH_ALEN); 804 memcpy(pattrib->src, GetAddr2Ptr(ptr), ETH_ALEN); 805 memcpy(pattrib->bssid, GetAddr3Ptr(ptr), ETH_ALEN); 806 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 807 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 808 809 /* */ 810 memcpy(pattrib->bssid, mybssid, ETH_ALEN); 811 812 813 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */ 814 if (!*psta) { 815 ret = _FAIL; 816 goto exit; 817 } 818 819 820 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) { 821 /* Special case */ 822 ret = RTW_RX_HANDLED; 823 goto exit; 824 } else { 825 if (!memcmp(myhwaddr, pattrib->dst, ETH_ALEN) && (!bmcast)) { 826 *psta = rtw_get_stainfo(pstapriv, pattrib->bssid); /* get sta_info */ 827 if (!*psta) { 828 829 /* for AP multicast issue , modify by yiwei */ 830 static unsigned long send_issue_deauth_time; 831 832 if (jiffies_to_msecs(jiffies - send_issue_deauth_time) > 10000 || send_issue_deauth_time == 0) { 833 send_issue_deauth_time = jiffies; 834 835 issue_deauth(adapter, pattrib->bssid, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 836 } 837 } 838 } 839 840 ret = _FAIL; 841 } 842 843 exit: 844 return ret; 845 } 846 847 static signed int sta2ap_data_frame(struct adapter *adapter, union recv_frame *precv_frame, 848 struct sta_info **psta) 849 { 850 u8 *ptr = precv_frame->u.hdr.rx_data; 851 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 852 struct sta_priv *pstapriv = &adapter->stapriv; 853 struct mlme_priv *pmlmepriv = &adapter->mlmepriv; 854 unsigned char *mybssid = get_bssid(pmlmepriv); 855 signed int ret = _SUCCESS; 856 857 if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) { 858 /* For AP mode, RA =BSSID, TX =STA(SRC_ADDR), A3 =DST_ADDR */ 859 if (memcmp(pattrib->bssid, mybssid, ETH_ALEN)) { 860 ret = _FAIL; 861 goto exit; 862 } 863 864 *psta = rtw_get_stainfo(pstapriv, pattrib->src); 865 if (!*psta) { 866 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 867 868 ret = RTW_RX_HANDLED; 869 goto exit; 870 } 871 872 process_pwrbit_data(adapter, precv_frame); 873 874 if ((GetFrameSubType(ptr) & WIFI_QOS_DATA_TYPE) == WIFI_QOS_DATA_TYPE) 875 process_wmmps_data(adapter, precv_frame); 876 877 if (GetFrameSubType(ptr) & BIT(6)) { 878 /* No data, will not indicate to upper layer, temporily count it here */ 879 count_rx_stats(adapter, precv_frame, *psta); 880 ret = RTW_RX_HANDLED; 881 goto exit; 882 } 883 } else { 884 u8 *myhwaddr = myid(&adapter->eeprompriv); 885 if (memcmp(pattrib->ra, myhwaddr, ETH_ALEN)) { 886 ret = RTW_RX_HANDLED; 887 goto exit; 888 } 889 issue_deauth(adapter, pattrib->src, WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA); 890 ret = RTW_RX_HANDLED; 891 goto exit; 892 } 893 894 exit: 895 return ret; 896 } 897 898 static signed int validate_recv_ctrl_frame(struct adapter *padapter, union recv_frame *precv_frame) 899 { 900 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 901 struct sta_priv *pstapriv = &padapter->stapriv; 902 u8 *pframe = precv_frame->u.hdr.rx_data; 903 struct sta_info *psta = NULL; 904 /* uint len = precv_frame->u.hdr.len; */ 905 906 if (GetFrameType(pframe) != WIFI_CTRL_TYPE) 907 return _FAIL; 908 909 /* receive the frames that ra(a1) is my address */ 910 if (memcmp(GetAddr1Ptr(pframe), myid(&padapter->eeprompriv), ETH_ALEN)) 911 return _FAIL; 912 913 psta = rtw_get_stainfo(pstapriv, GetAddr2Ptr(pframe)); 914 if (!psta) 915 return _FAIL; 916 917 /* for rx pkt statistics */ 918 psta->sta_stats.rx_ctrl_pkts++; 919 920 /* only handle ps-poll */ 921 if (GetFrameSubType(pframe) == WIFI_PSPOLL) { 922 u16 aid; 923 u8 wmmps_ac = 0; 924 925 aid = GetAid(pframe); 926 if (psta->aid != aid) 927 return _FAIL; 928 929 switch (pattrib->priority) { 930 case 1: 931 case 2: 932 wmmps_ac = psta->uapsd_bk&BIT(0); 933 break; 934 case 4: 935 case 5: 936 wmmps_ac = psta->uapsd_vi&BIT(0); 937 break; 938 case 6: 939 case 7: 940 wmmps_ac = psta->uapsd_vo&BIT(0); 941 break; 942 case 0: 943 case 3: 944 default: 945 wmmps_ac = psta->uapsd_be&BIT(0); 946 break; 947 } 948 949 if (wmmps_ac) 950 return _FAIL; 951 952 if (psta->state & WIFI_STA_ALIVE_CHK_STATE) { 953 psta->expire_to = pstapriv->expire_to; 954 psta->state ^= WIFI_STA_ALIVE_CHK_STATE; 955 } 956 957 if ((psta->state&WIFI_SLEEP_STATE) && (pstapriv->sta_dz_bitmap&BIT(psta->aid))) { 958 struct list_head *xmitframe_plist, *xmitframe_phead; 959 struct xmit_frame *pxmitframe = NULL; 960 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 961 962 /* spin_lock_bh(&psta->sleep_q.lock); */ 963 spin_lock_bh(&pxmitpriv->lock); 964 965 xmitframe_phead = get_list_head(&psta->sleep_q); 966 xmitframe_plist = get_next(xmitframe_phead); 967 968 if (xmitframe_phead != xmitframe_plist) { 969 pxmitframe = container_of(xmitframe_plist, struct xmit_frame, list); 970 971 xmitframe_plist = get_next(xmitframe_plist); 972 973 list_del_init(&pxmitframe->list); 974 975 psta->sleepq_len--; 976 977 if (psta->sleepq_len > 0) 978 pxmitframe->attrib.mdata = 1; 979 else 980 pxmitframe->attrib.mdata = 0; 981 982 pxmitframe->attrib.triggered = 1; 983 984 rtw_hal_xmitframe_enqueue(padapter, pxmitframe); 985 986 if (psta->sleepq_len == 0) { 987 pstapriv->tim_bitmap &= ~BIT(psta->aid); 988 989 /* update BCN for TIM IE */ 990 /* update_BCNTIM(padapter); */ 991 update_beacon(padapter, WLAN_EID_TIM, NULL, true); 992 } 993 994 /* spin_unlock_bh(&psta->sleep_q.lock); */ 995 spin_unlock_bh(&pxmitpriv->lock); 996 997 } else { 998 /* spin_unlock_bh(&psta->sleep_q.lock); */ 999 spin_unlock_bh(&pxmitpriv->lock); 1000 1001 if (pstapriv->tim_bitmap&BIT(psta->aid)) { 1002 if (psta->sleepq_len == 0) { 1003 /* issue nulldata with More data bit = 0 to indicate we have no buffered packets */ 1004 issue_nulldata_in_interrupt(padapter, psta->hwaddr); 1005 } else { 1006 psta->sleepq_len = 0; 1007 } 1008 1009 pstapriv->tim_bitmap &= ~BIT(psta->aid); 1010 1011 /* update BCN for TIM IE */ 1012 /* update_BCNTIM(padapter); */ 1013 update_beacon(padapter, WLAN_EID_TIM, NULL, true); 1014 } 1015 } 1016 } 1017 } 1018 1019 return _FAIL; 1020 1021 } 1022 1023 /* perform defrag */ 1024 static union recv_frame *recvframe_defrag(struct adapter *adapter, 1025 struct __queue *defrag_q) 1026 { 1027 struct list_head *plist, *phead; 1028 u8 wlanhdr_offset; 1029 u8 curfragnum; 1030 struct recv_frame_hdr *pfhdr, *pnfhdr; 1031 union recv_frame *prframe, *pnextrframe; 1032 struct __queue *pfree_recv_queue; 1033 1034 curfragnum = 0; 1035 pfree_recv_queue = &adapter->recvpriv.free_recv_queue; 1036 1037 phead = get_list_head(defrag_q); 1038 plist = get_next(phead); 1039 prframe = (union recv_frame *)plist; 1040 pfhdr = &prframe->u.hdr; 1041 list_del_init(&(prframe->u.list)); 1042 1043 if (curfragnum != pfhdr->attrib.frag_num) { 1044 /* the first fragment number must be 0 */ 1045 /* free the whole queue */ 1046 rtw_free_recvframe(prframe, pfree_recv_queue); 1047 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue); 1048 1049 return NULL; 1050 } 1051 1052 curfragnum++; 1053 1054 plist = get_list_head(defrag_q); 1055 1056 plist = get_next(plist); 1057 1058 while (phead != plist) { 1059 pnextrframe = (union recv_frame *)plist; 1060 pnfhdr = &pnextrframe->u.hdr; 1061 1062 1063 /* check the fragment sequence (2nd ~n fragment frame) */ 1064 1065 if (curfragnum != pnfhdr->attrib.frag_num) { 1066 /* the fragment number must be increasing (after decache) */ 1067 /* release the defrag_q & prframe */ 1068 rtw_free_recvframe(prframe, pfree_recv_queue); 1069 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue); 1070 return NULL; 1071 } 1072 1073 curfragnum++; 1074 1075 /* copy the 2nd~n fragment frame's payload to the first fragment */ 1076 /* get the 2nd~last fragment frame's payload */ 1077 1078 wlanhdr_offset = pnfhdr->attrib.hdrlen + pnfhdr->attrib.iv_len; 1079 1080 recvframe_pull(pnextrframe, wlanhdr_offset); 1081 1082 /* append to first fragment frame's tail (if privacy frame, pull the ICV) */ 1083 recvframe_pull_tail(prframe, pfhdr->attrib.icv_len); 1084 1085 /* memcpy */ 1086 memcpy(pfhdr->rx_tail, pnfhdr->rx_data, pnfhdr->len); 1087 1088 recvframe_put(prframe, pnfhdr->len); 1089 1090 pfhdr->attrib.icv_len = pnfhdr->attrib.icv_len; 1091 plist = get_next(plist); 1092 1093 } 1094 1095 /* free the defrag_q queue and return the prframe */ 1096 rtw_free_recvframe_queue(defrag_q, pfree_recv_queue); 1097 1098 return prframe; 1099 } 1100 1101 /* check if need to defrag, if needed queue the frame to defrag_q */ 1102 static union recv_frame *recvframe_chk_defrag(struct adapter *padapter, union recv_frame *precv_frame) 1103 { 1104 u8 ismfrag; 1105 u8 fragnum; 1106 u8 *psta_addr; 1107 struct recv_frame_hdr *pfhdr; 1108 struct sta_info *psta; 1109 struct sta_priv *pstapriv; 1110 struct list_head *phead; 1111 union recv_frame *prtnframe = NULL; 1112 struct __queue *pfree_recv_queue, *pdefrag_q; 1113 1114 pstapriv = &padapter->stapriv; 1115 1116 pfhdr = &precv_frame->u.hdr; 1117 1118 pfree_recv_queue = &padapter->recvpriv.free_recv_queue; 1119 1120 /* need to define struct of wlan header frame ctrl */ 1121 ismfrag = pfhdr->attrib.mfrag; 1122 fragnum = pfhdr->attrib.frag_num; 1123 1124 psta_addr = pfhdr->attrib.ta; 1125 psta = rtw_get_stainfo(pstapriv, psta_addr); 1126 if (!psta) { 1127 u8 type = GetFrameType(pfhdr->rx_data); 1128 if (type != WIFI_DATA_TYPE) { 1129 psta = rtw_get_bcmc_stainfo(padapter); 1130 pdefrag_q = &psta->sta_recvpriv.defrag_q; 1131 } else 1132 pdefrag_q = NULL; 1133 } else 1134 pdefrag_q = &psta->sta_recvpriv.defrag_q; 1135 1136 if ((ismfrag == 0) && (fragnum == 0)) 1137 prtnframe = precv_frame;/* isn't a fragment frame */ 1138 1139 if (ismfrag == 1) { 1140 /* 0~(n-1) fragment frame */ 1141 /* enqueue to defraf_g */ 1142 if (pdefrag_q) { 1143 if (fragnum == 0) 1144 /* the first fragment */ 1145 if (!list_empty(&pdefrag_q->queue)) 1146 /* free current defrag_q */ 1147 rtw_free_recvframe_queue(pdefrag_q, pfree_recv_queue); 1148 1149 1150 /* Then enqueue the 0~(n-1) fragment into the defrag_q */ 1151 1152 /* spin_lock(&pdefrag_q->lock); */ 1153 phead = get_list_head(pdefrag_q); 1154 list_add_tail(&pfhdr->list, phead); 1155 /* spin_unlock(&pdefrag_q->lock); */ 1156 1157 prtnframe = NULL; 1158 1159 } else { 1160 /* can't find this ta's defrag_queue, so free this recv_frame */ 1161 rtw_free_recvframe(precv_frame, pfree_recv_queue); 1162 prtnframe = NULL; 1163 } 1164 1165 } 1166 1167 if ((ismfrag == 0) && (fragnum != 0)) { 1168 /* the last fragment frame */ 1169 /* enqueue the last fragment */ 1170 if (pdefrag_q) { 1171 /* spin_lock(&pdefrag_q->lock); */ 1172 phead = get_list_head(pdefrag_q); 1173 list_add_tail(&pfhdr->list, phead); 1174 /* spin_unlock(&pdefrag_q->lock); */ 1175 1176 /* call recvframe_defrag to defrag */ 1177 precv_frame = recvframe_defrag(padapter, pdefrag_q); 1178 prtnframe = precv_frame; 1179 1180 } else { 1181 /* can't find this ta's defrag_queue, so free this recv_frame */ 1182 rtw_free_recvframe(precv_frame, pfree_recv_queue); 1183 prtnframe = NULL; 1184 } 1185 1186 } 1187 1188 1189 if ((prtnframe) && (prtnframe->u.hdr.attrib.privacy)) { 1190 /* after defrag we must check tkip mic code */ 1191 if (recvframe_chkmic(padapter, prtnframe) == _FAIL) { 1192 rtw_free_recvframe(prtnframe, pfree_recv_queue); 1193 prtnframe = NULL; 1194 } 1195 } 1196 return prtnframe; 1197 } 1198 1199 static signed int validate_recv_mgnt_frame(struct adapter *padapter, union recv_frame *precv_frame) 1200 { 1201 /* struct mlme_priv *pmlmepriv = &adapter->mlmepriv; */ 1202 1203 precv_frame = recvframe_chk_defrag(padapter, precv_frame); 1204 if (!precv_frame) 1205 return _SUCCESS; 1206 1207 { 1208 /* for rx pkt statistics */ 1209 struct sta_info *psta = rtw_get_stainfo(&padapter->stapriv, GetAddr2Ptr(precv_frame->u.hdr.rx_data)); 1210 if (psta) { 1211 psta->sta_stats.rx_mgnt_pkts++; 1212 if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_BEACON) 1213 psta->sta_stats.rx_beacon_pkts++; 1214 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBEREQ) 1215 psta->sta_stats.rx_probereq_pkts++; 1216 else if (GetFrameSubType(precv_frame->u.hdr.rx_data) == WIFI_PROBERSP) { 1217 if (!memcmp(padapter->eeprompriv.mac_addr, GetAddr1Ptr(precv_frame->u.hdr.rx_data), ETH_ALEN)) 1218 psta->sta_stats.rx_probersp_pkts++; 1219 else if (is_broadcast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data)) || 1220 is_multicast_mac_addr(GetAddr1Ptr(precv_frame->u.hdr.rx_data))) 1221 psta->sta_stats.rx_probersp_bm_pkts++; 1222 else 1223 psta->sta_stats.rx_probersp_uo_pkts++; 1224 } 1225 } 1226 } 1227 1228 mgt_dispatcher(padapter, precv_frame); 1229 1230 return _SUCCESS; 1231 1232 } 1233 1234 static signed int validate_recv_data_frame(struct adapter *adapter, union recv_frame *precv_frame) 1235 { 1236 u8 bretry; 1237 u8 *psa, *pda, *pbssid; 1238 struct sta_info *psta = NULL; 1239 u8 *ptr = precv_frame->u.hdr.rx_data; 1240 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 1241 struct security_priv *psecuritypriv = &adapter->securitypriv; 1242 signed int ret = _SUCCESS; 1243 1244 bretry = GetRetry(ptr); 1245 pda = get_da(ptr); 1246 psa = get_sa(ptr); 1247 pbssid = get_hdr_bssid(ptr); 1248 1249 if (!pbssid) { 1250 ret = _FAIL; 1251 goto exit; 1252 } 1253 1254 memcpy(pattrib->dst, pda, ETH_ALEN); 1255 memcpy(pattrib->src, psa, ETH_ALEN); 1256 1257 memcpy(pattrib->bssid, pbssid, ETH_ALEN); 1258 1259 switch (pattrib->to_fr_ds) { 1260 case 0: 1261 memcpy(pattrib->ra, pda, ETH_ALEN); 1262 memcpy(pattrib->ta, psa, ETH_ALEN); 1263 ret = sta2sta_data_frame(adapter, precv_frame, &psta); 1264 break; 1265 1266 case 1: 1267 memcpy(pattrib->ra, pda, ETH_ALEN); 1268 memcpy(pattrib->ta, pbssid, ETH_ALEN); 1269 ret = ap2sta_data_frame(adapter, precv_frame, &psta); 1270 break; 1271 1272 case 2: 1273 memcpy(pattrib->ra, pbssid, ETH_ALEN); 1274 memcpy(pattrib->ta, psa, ETH_ALEN); 1275 ret = sta2ap_data_frame(adapter, precv_frame, &psta); 1276 break; 1277 1278 case 3: 1279 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN); 1280 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN); 1281 ret = _FAIL; 1282 break; 1283 1284 default: 1285 ret = _FAIL; 1286 break; 1287 1288 } 1289 1290 if (ret == _FAIL) { 1291 goto exit; 1292 } else if (ret == RTW_RX_HANDLED) { 1293 goto exit; 1294 } 1295 1296 1297 if (!psta) { 1298 ret = _FAIL; 1299 goto exit; 1300 } 1301 1302 /* psta->rssi = prxcmd->rssi; */ 1303 /* psta->signal_quality = prxcmd->sq; */ 1304 precv_frame->u.hdr.psta = psta; 1305 1306 1307 pattrib->amsdu = 0; 1308 pattrib->ack_policy = 0; 1309 /* parsing QC field */ 1310 if (pattrib->qos == 1) { 1311 pattrib->priority = GetPriority((ptr + 24)); 1312 pattrib->ack_policy = GetAckpolicy((ptr + 24)); 1313 pattrib->amsdu = GetAMsdu((ptr + 24)); 1314 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 32 : 26; 1315 1316 if (pattrib->priority != 0 && pattrib->priority != 3) 1317 adapter->recvpriv.bIsAnyNonBEPkts = true; 1318 1319 } else { 1320 pattrib->priority = 0; 1321 pattrib->hdrlen = pattrib->to_fr_ds == 3 ? 30 : 24; 1322 } 1323 1324 1325 if (pattrib->order)/* HT-CTRL 11n */ 1326 pattrib->hdrlen += 4; 1327 1328 precv_frame->u.hdr.preorder_ctrl = &psta->recvreorder_ctrl[pattrib->priority]; 1329 1330 /* decache, drop duplicate recv packets */ 1331 if (recv_decache(precv_frame, bretry, &psta->sta_recvpriv.rxcache) == _FAIL) { 1332 ret = _FAIL; 1333 goto exit; 1334 } 1335 1336 if (pattrib->privacy) { 1337 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, IS_MCAST(pattrib->ra)); 1338 1339 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt); 1340 } else { 1341 pattrib->encrypt = 0; 1342 pattrib->iv_len = pattrib->icv_len = 0; 1343 } 1344 1345 exit: 1346 return ret; 1347 } 1348 1349 static signed int validate_80211w_mgmt(struct adapter *adapter, union recv_frame *precv_frame) 1350 { 1351 struct mlme_priv *pmlmepriv = &adapter->mlmepriv; 1352 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 1353 u8 *ptr = precv_frame->u.hdr.rx_data; 1354 u8 subtype; 1355 1356 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */ 1357 1358 /* only support station mode */ 1359 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) && check_fwstate(pmlmepriv, _FW_LINKED) && 1360 adapter->securitypriv.binstallBIPkey == true) { 1361 /* unicast management frame decrypt */ 1362 if (pattrib->privacy && !(IS_MCAST(GetAddr1Ptr(ptr))) && 1363 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC || subtype == WIFI_ACTION)) { 1364 u8 *mgmt_DATA; 1365 u32 data_len = 0; 1366 1367 pattrib->bdecrypted = 0; 1368 pattrib->encrypt = _AES_; 1369 pattrib->hdrlen = sizeof(struct ieee80211_hdr_3addr); 1370 /* set iv and icv length */ 1371 SET_ICE_IV_LEN(pattrib->iv_len, pattrib->icv_len, pattrib->encrypt); 1372 memcpy(pattrib->ra, GetAddr1Ptr(ptr), ETH_ALEN); 1373 memcpy(pattrib->ta, GetAddr2Ptr(ptr), ETH_ALEN); 1374 /* actual management data frame body */ 1375 data_len = pattrib->pkt_len - pattrib->hdrlen - pattrib->iv_len - pattrib->icv_len; 1376 mgmt_DATA = rtw_zmalloc(data_len); 1377 if (!mgmt_DATA) { 1378 goto validate_80211w_fail; 1379 } 1380 precv_frame = decryptor(adapter, precv_frame); 1381 /* save actual management data frame body */ 1382 memcpy(mgmt_DATA, ptr+pattrib->hdrlen+pattrib->iv_len, data_len); 1383 /* overwrite the iv field */ 1384 memcpy(ptr+pattrib->hdrlen, mgmt_DATA, data_len); 1385 /* remove the iv and icv length */ 1386 pattrib->pkt_len = pattrib->pkt_len - pattrib->iv_len - pattrib->icv_len; 1387 kfree(mgmt_DATA); 1388 if (!precv_frame) { 1389 goto validate_80211w_fail; 1390 } 1391 } else if (IS_MCAST(GetAddr1Ptr(ptr)) && 1392 (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC)) { 1393 signed int BIP_ret = _SUCCESS; 1394 /* verify BIP MME IE of broadcast/multicast de-auth/disassoc packet */ 1395 BIP_ret = rtw_BIP_verify(adapter, (u8 *)precv_frame); 1396 if (BIP_ret == _FAIL) { 1397 goto validate_80211w_fail; 1398 } else if (BIP_ret == RTW_RX_HANDLED) { 1399 /* issue sa query request */ 1400 issue_action_SA_Query(adapter, NULL, 0, 0); 1401 goto validate_80211w_fail; 1402 } 1403 } else { /* 802.11w protect */ 1404 if (subtype == WIFI_ACTION) { 1405 /* according 802.11-2012 standard, these five types are not robust types */ 1406 if (ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_PUBLIC && 1407 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_HT && 1408 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_UNPROTECTED_WNM && 1409 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_SELF_PROTECTED && 1410 ptr[WLAN_HDR_A3_LEN] != RTW_WLAN_CATEGORY_P2P) { 1411 goto validate_80211w_fail; 1412 } 1413 } else if (subtype == WIFI_DEAUTH || subtype == WIFI_DISASSOC) { 1414 /* issue sa query request */ 1415 issue_action_SA_Query(adapter, NULL, 0, 0); 1416 goto validate_80211w_fail; 1417 } 1418 } 1419 } 1420 return _SUCCESS; 1421 1422 validate_80211w_fail: 1423 return _FAIL; 1424 1425 } 1426 1427 static signed int validate_recv_frame(struct adapter *adapter, union recv_frame *precv_frame) 1428 { 1429 /* shall check frame subtype, to / from ds, da, bssid */ 1430 1431 /* then call check if rx seq/frag. duplicated. */ 1432 1433 u8 type; 1434 u8 subtype; 1435 signed int retval = _SUCCESS; 1436 u8 bDumpRxPkt; 1437 1438 struct rx_pkt_attrib *pattrib = &precv_frame->u.hdr.attrib; 1439 1440 u8 *ptr = precv_frame->u.hdr.rx_data; 1441 u8 ver = (unsigned char) (*ptr)&0x3; 1442 1443 /* add version chk */ 1444 if (ver != 0) { 1445 retval = _FAIL; 1446 goto exit; 1447 } 1448 1449 type = GetFrameType(ptr); 1450 subtype = GetFrameSubType(ptr); /* bit(7)~bit(2) */ 1451 1452 pattrib->to_fr_ds = get_tofr_ds(ptr); 1453 1454 pattrib->frag_num = GetFragNum(ptr); 1455 pattrib->seq_num = GetSequence(ptr); 1456 1457 pattrib->pw_save = GetPwrMgt(ptr); 1458 pattrib->mfrag = GetMFrag(ptr); 1459 pattrib->mdata = GetMData(ptr); 1460 pattrib->privacy = GetPrivacy(ptr); 1461 pattrib->order = GetOrder(ptr); 1462 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt)); 1463 1464 switch (type) { 1465 case WIFI_MGT_TYPE: /* mgnt */ 1466 if (validate_80211w_mgmt(adapter, precv_frame) == _FAIL) { 1467 retval = _FAIL; 1468 break; 1469 } 1470 1471 retval = validate_recv_mgnt_frame(adapter, precv_frame); 1472 retval = _FAIL; /* only data frame return _SUCCESS */ 1473 break; 1474 case WIFI_CTRL_TYPE: /* ctrl */ 1475 retval = validate_recv_ctrl_frame(adapter, precv_frame); 1476 retval = _FAIL; /* only data frame return _SUCCESS */ 1477 break; 1478 case WIFI_DATA_TYPE: /* data */ 1479 pattrib->qos = (subtype & BIT(7)) ? 1:0; 1480 retval = validate_recv_data_frame(adapter, precv_frame); 1481 if (retval == _FAIL) { 1482 struct recv_priv *precvpriv = &adapter->recvpriv; 1483 precvpriv->rx_drop++; 1484 } else if (retval == _SUCCESS) { 1485 #ifdef DBG_RX_DUMP_EAP 1486 u8 bDumpRxPkt; 1487 u16 eth_type; 1488 1489 /* dump eapol */ 1490 rtw_hal_get_def_var(adapter, HAL_DEF_DBG_DUMP_RXPKT, &(bDumpRxPkt)); 1491 /* get ether_type */ 1492 memcpy(ð_type, ptr + pattrib->hdrlen + pattrib->iv_len + LLC_HEADER_LENGTH, 2); 1493 eth_type = ntohs((unsigned short) eth_type); 1494 #endif 1495 } 1496 break; 1497 default: 1498 retval = _FAIL; 1499 break; 1500 } 1501 1502 exit: 1503 return retval; 1504 } 1505 1506 /* remove the wlanhdr and add the eth_hdr */ 1507 static signed int wlanhdr_to_ethhdr(union recv_frame *precvframe) 1508 { 1509 signed int rmv_len; 1510 u16 eth_type, len; 1511 u8 bsnaphdr; 1512 u8 *psnap_type; 1513 struct ieee80211_snap_hdr *psnap; 1514 __be16 be_tmp; 1515 struct adapter *adapter = precvframe->u.hdr.adapter; 1516 struct mlme_priv *pmlmepriv = &adapter->mlmepriv; 1517 u8 *ptr = precvframe->u.hdr.rx_data; /* point to frame_ctrl field */ 1518 struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib; 1519 1520 if (pattrib->encrypt) 1521 recvframe_pull_tail(precvframe, pattrib->icv_len); 1522 1523 psnap = (struct ieee80211_snap_hdr *)(ptr+pattrib->hdrlen + pattrib->iv_len); 1524 psnap_type = ptr+pattrib->hdrlen + pattrib->iv_len+SNAP_SIZE; 1525 /* convert hdr + possible LLC headers into Ethernet header */ 1526 /* eth_type = (psnap_type[0] << 8) | psnap_type[1]; */ 1527 if ((!memcmp(psnap, rfc1042_header, SNAP_SIZE) && 1528 (memcmp(psnap_type, SNAP_ETH_TYPE_IPX, 2)) && 1529 (memcmp(psnap_type, SNAP_ETH_TYPE_APPLETALK_AARP, 2))) || 1530 /* eth_type != ETH_P_AARP && eth_type != ETH_P_IPX) || */ 1531 !memcmp(psnap, bridge_tunnel_header, SNAP_SIZE)) { 1532 /* remove RFC1042 or Bridge-Tunnel encapsulation and replace EtherType */ 1533 bsnaphdr = true; 1534 } else 1535 /* Leave Ethernet header part of hdr and full payload */ 1536 bsnaphdr = false; 1537 1538 rmv_len = pattrib->hdrlen + pattrib->iv_len + (bsnaphdr?SNAP_SIZE:0); 1539 len = precvframe->u.hdr.len - rmv_len; 1540 1541 memcpy(&be_tmp, ptr+rmv_len, 2); 1542 eth_type = ntohs(be_tmp); /* pattrib->ether_type */ 1543 pattrib->eth_type = eth_type; 1544 1545 if ((check_fwstate(pmlmepriv, WIFI_MP_STATE) == true)) { 1546 ptr += rmv_len; 1547 *ptr = 0x87; 1548 *(ptr+1) = 0x12; 1549 1550 eth_type = 0x8712; 1551 /* append rx status for mp test packets */ 1552 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr)+2)-24); 1553 if (!ptr) 1554 return _FAIL; 1555 memcpy(ptr, get_rxmem(precvframe), 24); 1556 ptr += 24; 1557 } else { 1558 ptr = recvframe_pull(precvframe, (rmv_len-sizeof(struct ethhdr) + (bsnaphdr?2:0))); 1559 if (!ptr) 1560 return _FAIL; 1561 } 1562 1563 memcpy(ptr, pattrib->dst, ETH_ALEN); 1564 memcpy(ptr+ETH_ALEN, pattrib->src, ETH_ALEN); 1565 1566 if (!bsnaphdr) { 1567 be_tmp = htons(len); 1568 memcpy(ptr+12, &be_tmp, 2); 1569 } 1570 1571 return _SUCCESS; 1572 } 1573 1574 static int amsdu_to_msdu(struct adapter *padapter, union recv_frame *prframe) 1575 { 1576 int a_len, padding_len; 1577 u16 nSubframe_Length; 1578 u8 nr_subframes, i; 1579 u8 *pdata; 1580 struct sk_buff *sub_pkt, *subframes[MAX_SUBFRAME_COUNT]; 1581 struct recv_priv *precvpriv = &padapter->recvpriv; 1582 struct __queue *pfree_recv_queue = &(precvpriv->free_recv_queue); 1583 1584 nr_subframes = 0; 1585 1586 recvframe_pull(prframe, prframe->u.hdr.attrib.hdrlen); 1587 1588 if (prframe->u.hdr.attrib.iv_len > 0) 1589 recvframe_pull(prframe, prframe->u.hdr.attrib.iv_len); 1590 1591 a_len = prframe->u.hdr.len; 1592 1593 pdata = prframe->u.hdr.rx_data; 1594 1595 while (a_len > ETH_HLEN) { 1596 1597 /* Offset 12 denote 2 mac address */ 1598 nSubframe_Length = get_unaligned_be16(pdata + 12); 1599 1600 if (a_len < ETH_HLEN + nSubframe_Length) 1601 break; 1602 1603 sub_pkt = rtw_os_alloc_msdu_pkt(prframe, nSubframe_Length, pdata); 1604 if (!sub_pkt) 1605 break; 1606 1607 /* move the data point to data content */ 1608 pdata += ETH_HLEN; 1609 a_len -= ETH_HLEN; 1610 1611 subframes[nr_subframes++] = sub_pkt; 1612 1613 if (nr_subframes >= MAX_SUBFRAME_COUNT) 1614 break; 1615 1616 pdata += nSubframe_Length; 1617 a_len -= nSubframe_Length; 1618 if (a_len != 0) { 1619 padding_len = 4 - ((nSubframe_Length + ETH_HLEN) & (4-1)); 1620 if (padding_len == 4) 1621 padding_len = 0; 1622 1623 if (a_len < padding_len) 1624 break; 1625 1626 pdata += padding_len; 1627 a_len -= padding_len; 1628 } 1629 } 1630 1631 for (i = 0; i < nr_subframes; i++) { 1632 sub_pkt = subframes[i]; 1633 1634 /* Indicate the packets to upper layer */ 1635 if (sub_pkt) 1636 rtw_os_recv_indicate_pkt(padapter, sub_pkt, &prframe->u.hdr.attrib); 1637 } 1638 1639 prframe->u.hdr.len = 0; 1640 rtw_free_recvframe(prframe, pfree_recv_queue);/* free this recv_frame */ 1641 1642 return _SUCCESS; 1643 } 1644 1645 static int check_indicate_seq(struct recv_reorder_ctrl *preorder_ctrl, u16 seq_num) 1646 { 1647 struct adapter *padapter = preorder_ctrl->padapter; 1648 struct dvobj_priv *psdpriv = padapter->dvobj; 1649 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg; 1650 u8 wsize = preorder_ctrl->wsize_b; 1651 u16 wend = (preorder_ctrl->indicate_seq + wsize - 1) & 0xFFF;/* 4096; */ 1652 1653 /* Rx Reorder initialize condition. */ 1654 if (preorder_ctrl->indicate_seq == 0xFFFF) { 1655 preorder_ctrl->indicate_seq = seq_num; 1656 } 1657 1658 /* Drop out the packet which SeqNum is smaller than WinStart */ 1659 if (SN_LESS(seq_num, preorder_ctrl->indicate_seq)) { 1660 return false; 1661 } 1662 1663 /* */ 1664 /* Sliding window manipulation. Conditions includes: */ 1665 /* 1. Incoming SeqNum is equal to WinStart =>Window shift 1 */ 1666 /* 2. Incoming SeqNum is larger than the WinEnd => Window shift N */ 1667 /* */ 1668 if (SN_EQUAL(seq_num, preorder_ctrl->indicate_seq)) { 1669 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF; 1670 1671 } else if (SN_LESS(wend, seq_num)) { 1672 /* boundary situation, when seq_num cross 0xFFF */ 1673 if (seq_num >= (wsize - 1)) 1674 preorder_ctrl->indicate_seq = seq_num + 1 - wsize; 1675 else 1676 preorder_ctrl->indicate_seq = 0xFFF - (wsize - (seq_num + 1)) + 1; 1677 pdbgpriv->dbg_rx_ampdu_window_shift_cnt++; 1678 } 1679 1680 return true; 1681 } 1682 1683 static int enqueue_reorder_recvframe(struct recv_reorder_ctrl *preorder_ctrl, union recv_frame *prframe) 1684 { 1685 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; 1686 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; 1687 struct list_head *phead, *plist; 1688 union recv_frame *pnextrframe; 1689 struct rx_pkt_attrib *pnextattrib; 1690 1691 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */ 1692 /* spin_lock(&ppending_recvframe_queue->lock); */ 1693 1694 1695 phead = get_list_head(ppending_recvframe_queue); 1696 plist = get_next(phead); 1697 1698 while (phead != plist) { 1699 pnextrframe = (union recv_frame *)plist; 1700 pnextattrib = &pnextrframe->u.hdr.attrib; 1701 1702 if (SN_LESS(pnextattrib->seq_num, pattrib->seq_num)) 1703 plist = get_next(plist); 1704 else if (SN_EQUAL(pnextattrib->seq_num, pattrib->seq_num)) 1705 /* Duplicate entry is found!! Do not insert current entry. */ 1706 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */ 1707 return false; 1708 else 1709 break; 1710 1711 } 1712 1713 1714 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */ 1715 /* spin_lock(&ppending_recvframe_queue->lock); */ 1716 1717 list_del_init(&(prframe->u.hdr.list)); 1718 1719 list_add_tail(&(prframe->u.hdr.list), plist); 1720 1721 /* spin_unlock(&ppending_recvframe_queue->lock); */ 1722 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */ 1723 1724 return true; 1725 1726 } 1727 1728 static void recv_indicatepkts_pkt_loss_cnt(struct debug_priv *pdbgpriv, u64 prev_seq, u64 current_seq) 1729 { 1730 if (current_seq < prev_seq) 1731 pdbgpriv->dbg_rx_ampdu_loss_count += (4096 + current_seq - prev_seq); 1732 else 1733 pdbgpriv->dbg_rx_ampdu_loss_count += (current_seq - prev_seq); 1734 1735 } 1736 1737 static int recv_indicatepkts_in_order(struct adapter *padapter, struct recv_reorder_ctrl *preorder_ctrl, int bforced) 1738 { 1739 struct list_head *phead, *plist; 1740 union recv_frame *prframe; 1741 struct rx_pkt_attrib *pattrib; 1742 /* u8 index = 0; */ 1743 int bPktInBuf = false; 1744 struct recv_priv *precvpriv = &padapter->recvpriv; 1745 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; 1746 struct dvobj_priv *psdpriv = padapter->dvobj; 1747 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg; 1748 1749 /* spin_lock_irqsave(&ppending_recvframe_queue->lock, irql); */ 1750 /* spin_lock(&ppending_recvframe_queue->lock); */ 1751 1752 phead = get_list_head(ppending_recvframe_queue); 1753 plist = get_next(phead); 1754 1755 /* Handling some condition for forced indicate case. */ 1756 if (bforced == true) { 1757 pdbgpriv->dbg_rx_ampdu_forced_indicate_count++; 1758 if (list_empty(phead)) { 1759 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */ 1760 /* spin_unlock(&ppending_recvframe_queue->lock); */ 1761 return true; 1762 } 1763 1764 prframe = (union recv_frame *)plist; 1765 pattrib = &prframe->u.hdr.attrib; 1766 1767 recv_indicatepkts_pkt_loss_cnt(pdbgpriv, preorder_ctrl->indicate_seq, pattrib->seq_num); 1768 preorder_ctrl->indicate_seq = pattrib->seq_num; 1769 1770 } 1771 1772 /* Prepare indication list and indication. */ 1773 /* Check if there is any packet need indicate. */ 1774 while (!list_empty(phead)) { 1775 1776 prframe = (union recv_frame *)plist; 1777 pattrib = &prframe->u.hdr.attrib; 1778 1779 if (!SN_LESS(preorder_ctrl->indicate_seq, pattrib->seq_num)) { 1780 plist = get_next(plist); 1781 list_del_init(&(prframe->u.hdr.list)); 1782 1783 if (SN_EQUAL(preorder_ctrl->indicate_seq, pattrib->seq_num)) 1784 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1) & 0xFFF; 1785 1786 /* Set this as a lock to make sure that only one thread is indicating packet. */ 1787 /* pTS->RxIndicateState = RXTS_INDICATE_PROCESSING; */ 1788 1789 /* Indicate packets */ 1790 1791 /* indicate this recv_frame */ 1792 if (!pattrib->amsdu) { 1793 if ((padapter->bDriverStopped == false) && 1794 (padapter->bSurpriseRemoved == false)) 1795 rtw_recv_indicatepkt(padapter, prframe);/* indicate this recv_frame */ 1796 1797 } else if (pattrib->amsdu == 1) { 1798 if (amsdu_to_msdu(padapter, prframe) != _SUCCESS) 1799 rtw_free_recvframe(prframe, &precvpriv->free_recv_queue); 1800 1801 } else { 1802 /* error condition; */ 1803 } 1804 1805 1806 /* Update local variables. */ 1807 bPktInBuf = false; 1808 1809 } else { 1810 bPktInBuf = true; 1811 break; 1812 } 1813 1814 } 1815 1816 /* spin_unlock(&ppending_recvframe_queue->lock); */ 1817 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */ 1818 1819 return bPktInBuf; 1820 } 1821 1822 static int recv_indicatepkt_reorder(struct adapter *padapter, union recv_frame *prframe) 1823 { 1824 int retval = _SUCCESS; 1825 struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; 1826 struct recv_reorder_ctrl *preorder_ctrl = prframe->u.hdr.preorder_ctrl; 1827 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; 1828 struct dvobj_priv *psdpriv = padapter->dvobj; 1829 struct debug_priv *pdbgpriv = &psdpriv->drv_dbg; 1830 1831 if (!pattrib->amsdu) { 1832 /* s1. */ 1833 wlanhdr_to_ethhdr(prframe); 1834 1835 if (pattrib->qos != 1) { 1836 if ((padapter->bDriverStopped == false) && 1837 (padapter->bSurpriseRemoved == false)) { 1838 rtw_recv_indicatepkt(padapter, prframe); 1839 return _SUCCESS; 1840 1841 } 1842 1843 return _FAIL; 1844 1845 } 1846 1847 if (preorder_ctrl->enable == false) { 1848 /* indicate this recv_frame */ 1849 preorder_ctrl->indicate_seq = pattrib->seq_num; 1850 1851 rtw_recv_indicatepkt(padapter, prframe); 1852 1853 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096; 1854 1855 return _SUCCESS; 1856 } 1857 } else if (pattrib->amsdu == 1) { /* temp filter -> means didn't support A-MSDUs in a A-MPDU */ 1858 if (preorder_ctrl->enable == false) { 1859 preorder_ctrl->indicate_seq = pattrib->seq_num; 1860 1861 retval = amsdu_to_msdu(padapter, prframe); 1862 1863 preorder_ctrl->indicate_seq = (preorder_ctrl->indicate_seq + 1)%4096; 1864 1865 if (retval != _SUCCESS) { 1866 } 1867 1868 return retval; 1869 } 1870 } 1871 1872 spin_lock_bh(&ppending_recvframe_queue->lock); 1873 1874 /* s2. check if winstart_b(indicate_seq) needs to been updated */ 1875 if (!check_indicate_seq(preorder_ctrl, pattrib->seq_num)) { 1876 pdbgpriv->dbg_rx_ampdu_drop_count++; 1877 goto _err_exit; 1878 } 1879 1880 1881 /* s3. Insert all packet into Reorder Queue to maintain its ordering. */ 1882 if (!enqueue_reorder_recvframe(preorder_ctrl, prframe)) { 1883 /* spin_unlock_irqrestore(&ppending_recvframe_queue->lock, irql); */ 1884 /* return _FAIL; */ 1885 goto _err_exit; 1886 } 1887 1888 1889 /* s4. */ 1890 /* Indication process. */ 1891 /* After Packet dropping and Sliding Window shifting as above, we can now just indicate the packets */ 1892 /* with the SeqNum smaller than latest WinStart and buffer other packets. */ 1893 /* */ 1894 /* For Rx Reorder condition: */ 1895 /* 1. All packets with SeqNum smaller than WinStart => Indicate */ 1896 /* 2. All packets with SeqNum larger than or equal to WinStart => Buffer it. */ 1897 /* */ 1898 1899 /* recv_indicatepkts_in_order(padapter, preorder_ctrl, true); */ 1900 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, false) == true) { 1901 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME); 1902 spin_unlock_bh(&ppending_recvframe_queue->lock); 1903 } else { 1904 spin_unlock_bh(&ppending_recvframe_queue->lock); 1905 del_timer_sync(&preorder_ctrl->reordering_ctrl_timer); 1906 } 1907 1908 return _SUCCESS; 1909 1910 _err_exit: 1911 spin_unlock_bh(&ppending_recvframe_queue->lock); 1912 1913 return _FAIL; 1914 } 1915 1916 1917 void rtw_reordering_ctrl_timeout_handler(struct timer_list *t) 1918 { 1919 struct recv_reorder_ctrl *preorder_ctrl = 1920 from_timer(preorder_ctrl, t, reordering_ctrl_timer); 1921 struct adapter *padapter = preorder_ctrl->padapter; 1922 struct __queue *ppending_recvframe_queue = &preorder_ctrl->pending_recvframe_queue; 1923 1924 1925 if (padapter->bDriverStopped || padapter->bSurpriseRemoved) 1926 return; 1927 1928 spin_lock_bh(&ppending_recvframe_queue->lock); 1929 1930 if (recv_indicatepkts_in_order(padapter, preorder_ctrl, true) == true) 1931 _set_timer(&preorder_ctrl->reordering_ctrl_timer, REORDER_WAIT_TIME); 1932 1933 spin_unlock_bh(&ppending_recvframe_queue->lock); 1934 1935 } 1936 1937 static int process_recv_indicatepkts(struct adapter *padapter, union recv_frame *prframe) 1938 { 1939 int retval = _SUCCESS; 1940 /* struct recv_priv *precvpriv = &padapter->recvpriv; */ 1941 /* struct rx_pkt_attrib *pattrib = &prframe->u.hdr.attrib; */ 1942 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 1943 struct ht_priv *phtpriv = &pmlmepriv->htpriv; 1944 1945 if (phtpriv->ht_option == true) { /* B/G/N Mode */ 1946 /* prframe->u.hdr.preorder_ctrl = &precvpriv->recvreorder_ctrl[pattrib->priority]; */ 1947 1948 if (recv_indicatepkt_reorder(padapter, prframe) != _SUCCESS) { /* including perform A-MPDU Rx Ordering Buffer Control */ 1949 1950 if ((padapter->bDriverStopped == false) && 1951 (padapter->bSurpriseRemoved == false)) { 1952 retval = _FAIL; 1953 return retval; 1954 } 1955 } 1956 } else { /* B/G mode */ 1957 retval = wlanhdr_to_ethhdr(prframe); 1958 if (retval != _SUCCESS) 1959 return retval; 1960 1961 if ((padapter->bDriverStopped == false) && (padapter->bSurpriseRemoved == false)) { 1962 /* indicate this recv_frame */ 1963 rtw_recv_indicatepkt(padapter, prframe); 1964 } else { 1965 retval = _FAIL; 1966 return retval; 1967 } 1968 1969 } 1970 1971 return retval; 1972 1973 } 1974 1975 static int recv_func_prehandle(struct adapter *padapter, union recv_frame *rframe) 1976 { 1977 int ret = _SUCCESS; 1978 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue; 1979 1980 /* check the frame crtl field and decache */ 1981 ret = validate_recv_frame(padapter, rframe); 1982 if (ret != _SUCCESS) { 1983 rtw_free_recvframe(rframe, pfree_recv_queue);/* free this recv_frame */ 1984 goto exit; 1985 } 1986 1987 exit: 1988 return ret; 1989 } 1990 1991 static int recv_func_posthandle(struct adapter *padapter, union recv_frame *prframe) 1992 { 1993 int ret = _SUCCESS; 1994 union recv_frame *orig_prframe = prframe; 1995 struct recv_priv *precvpriv = &padapter->recvpriv; 1996 struct __queue *pfree_recv_queue = &padapter->recvpriv.free_recv_queue; 1997 1998 prframe = decryptor(padapter, prframe); 1999 if (!prframe) { 2000 ret = _FAIL; 2001 goto _recv_data_drop; 2002 } 2003 2004 prframe = recvframe_chk_defrag(padapter, prframe); 2005 if (!prframe) 2006 goto _recv_data_drop; 2007 2008 prframe = portctrl(padapter, prframe); 2009 if (!prframe) { 2010 ret = _FAIL; 2011 goto _recv_data_drop; 2012 } 2013 2014 count_rx_stats(padapter, prframe, NULL); 2015 2016 ret = process_recv_indicatepkts(padapter, prframe); 2017 if (ret != _SUCCESS) { 2018 rtw_free_recvframe(orig_prframe, pfree_recv_queue);/* free this recv_frame */ 2019 goto _recv_data_drop; 2020 } 2021 2022 _recv_data_drop: 2023 precvpriv->rx_drop++; 2024 return ret; 2025 } 2026 2027 static int recv_func(struct adapter *padapter, union recv_frame *rframe) 2028 { 2029 int ret; 2030 struct rx_pkt_attrib *prxattrib = &rframe->u.hdr.attrib; 2031 struct recv_priv *recvpriv = &padapter->recvpriv; 2032 struct security_priv *psecuritypriv = &padapter->securitypriv; 2033 struct mlme_priv *mlmepriv = &padapter->mlmepriv; 2034 2035 /* check if need to handle uc_swdec_pending_queue*/ 2036 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && psecuritypriv->busetkipkey) { 2037 union recv_frame *pending_frame; 2038 int cnt = 0; 2039 2040 while ((pending_frame = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue))) { 2041 cnt++; 2042 recv_func_posthandle(padapter, pending_frame); 2043 } 2044 } 2045 2046 ret = recv_func_prehandle(padapter, rframe); 2047 2048 if (ret == _SUCCESS) { 2049 2050 /* check if need to enqueue into uc_swdec_pending_queue*/ 2051 if (check_fwstate(mlmepriv, WIFI_STATION_STATE) && 2052 !IS_MCAST(prxattrib->ra) && prxattrib->encrypt > 0 && 2053 (prxattrib->bdecrypted == 0 || psecuritypriv->sw_decrypt == true) && 2054 psecuritypriv->ndisauthtype == Ndis802_11AuthModeWPAPSK && 2055 !psecuritypriv->busetkipkey) { 2056 rtw_enqueue_recvframe(rframe, &padapter->recvpriv.uc_swdec_pending_queue); 2057 2058 if (recvpriv->free_recvframe_cnt < NR_RECVFRAME/4) { 2059 /* to prevent from recvframe starvation, get recvframe from uc_swdec_pending_queue to free_recvframe_cnt */ 2060 rframe = rtw_alloc_recvframe(&padapter->recvpriv.uc_swdec_pending_queue); 2061 if (rframe) 2062 goto do_posthandle; 2063 } 2064 goto exit; 2065 } 2066 2067 do_posthandle: 2068 ret = recv_func_posthandle(padapter, rframe); 2069 } 2070 2071 exit: 2072 return ret; 2073 } 2074 2075 2076 s32 rtw_recv_entry(union recv_frame *precvframe) 2077 { 2078 struct adapter *padapter; 2079 struct recv_priv *precvpriv; 2080 s32 ret = _SUCCESS; 2081 2082 padapter = precvframe->u.hdr.adapter; 2083 2084 precvpriv = &padapter->recvpriv; 2085 2086 ret = recv_func(padapter, precvframe); 2087 if (ret == _FAIL) { 2088 goto _recv_entry_drop; 2089 } 2090 2091 2092 precvpriv->rx_pkts++; 2093 2094 return ret; 2095 2096 _recv_entry_drop: 2097 2098 return ret; 2099 } 2100 2101 static void rtw_signal_stat_timer_hdl(struct timer_list *t) 2102 { 2103 struct adapter *adapter = 2104 from_timer(adapter, t, recvpriv.signal_stat_timer); 2105 struct recv_priv *recvpriv = &adapter->recvpriv; 2106 2107 u32 tmp_s, tmp_q; 2108 u8 avg_signal_strength = 0; 2109 u8 avg_signal_qual = 0; 2110 u32 num_signal_strength = 0; 2111 u32 __maybe_unused num_signal_qual = 0; 2112 u8 _alpha = 5; /* this value is based on converging_constant = 5000 and sampling_interval = 1000 */ 2113 2114 if (adapter->recvpriv.is_signal_dbg) { 2115 /* update the user specific value, signal_strength_dbg, to signal_strength, rssi */ 2116 adapter->recvpriv.signal_strength = adapter->recvpriv.signal_strength_dbg; 2117 adapter->recvpriv.rssi = (s8)translate_percentage_to_dbm((u8)adapter->recvpriv.signal_strength_dbg); 2118 } else { 2119 2120 if (recvpriv->signal_strength_data.update_req == 0) {/* update_req is clear, means we got rx */ 2121 avg_signal_strength = recvpriv->signal_strength_data.avg_val; 2122 num_signal_strength = recvpriv->signal_strength_data.total_num; 2123 /* after avg_vals are acquired, we can re-stat the signal values */ 2124 recvpriv->signal_strength_data.update_req = 1; 2125 } 2126 2127 if (recvpriv->signal_qual_data.update_req == 0) {/* update_req is clear, means we got rx */ 2128 avg_signal_qual = recvpriv->signal_qual_data.avg_val; 2129 num_signal_qual = recvpriv->signal_qual_data.total_num; 2130 /* after avg_vals are acquired, we can re-stat the signal values */ 2131 recvpriv->signal_qual_data.update_req = 1; 2132 } 2133 2134 if (num_signal_strength == 0) { 2135 if (rtw_get_on_cur_ch_time(adapter) == 0 || 2136 jiffies_to_msecs(jiffies - rtw_get_on_cur_ch_time(adapter)) < 2 * adapter->mlmeextpriv.mlmext_info.bcn_interval 2137 ) { 2138 goto set_timer; 2139 } 2140 } 2141 2142 if (check_fwstate(&adapter->mlmepriv, _FW_UNDER_SURVEY) == true || 2143 check_fwstate(&adapter->mlmepriv, _FW_LINKED) == false 2144 ) { 2145 goto set_timer; 2146 } 2147 2148 /* update value of signal_strength, rssi, signal_qual */ 2149 tmp_s = (avg_signal_strength+(_alpha-1)*recvpriv->signal_strength); 2150 if (tmp_s % _alpha) 2151 tmp_s = tmp_s/_alpha + 1; 2152 else 2153 tmp_s = tmp_s/_alpha; 2154 if (tmp_s > 100) 2155 tmp_s = 100; 2156 2157 tmp_q = (avg_signal_qual+(_alpha-1)*recvpriv->signal_qual); 2158 if (tmp_q % _alpha) 2159 tmp_q = tmp_q/_alpha + 1; 2160 else 2161 tmp_q = tmp_q/_alpha; 2162 if (tmp_q > 100) 2163 tmp_q = 100; 2164 2165 recvpriv->signal_strength = tmp_s; 2166 recvpriv->rssi = (s8)translate_percentage_to_dbm(tmp_s); 2167 recvpriv->signal_qual = tmp_q; 2168 } 2169 2170 set_timer: 2171 rtw_set_signal_stat_timer(recvpriv); 2172 2173 } 2174