1 // SPDX-License-Identifier: GPL-2.0 2 /****************************************************************************** 3 * 4 * Copyright(c) 2007 - 2012 Realtek Corporation. All rights reserved. 5 * 6 ******************************************************************************/ 7 #define _RTL8723BS_RECV_C_ 8 9 #include <drv_types.h> 10 #include <rtw_debug.h> 11 #include <rtl8723b_hal.h> 12 13 static void initrecvbuf(struct recv_buf *precvbuf, struct adapter *padapter) 14 { 15 INIT_LIST_HEAD(&precvbuf->list); 16 spin_lock_init(&precvbuf->recvbuf_lock); 17 18 precvbuf->adapter = padapter; 19 } 20 21 static void update_recvframe_attrib(struct adapter *padapter, 22 union recv_frame *precvframe, 23 struct recv_stat *prxstat) 24 { 25 struct rx_pkt_attrib *pattrib; 26 struct recv_stat report; 27 PRXREPORT prxreport = (PRXREPORT)&report; 28 29 report.rxdw0 = prxstat->rxdw0; 30 report.rxdw1 = prxstat->rxdw1; 31 report.rxdw2 = prxstat->rxdw2; 32 report.rxdw3 = prxstat->rxdw3; 33 report.rxdw4 = prxstat->rxdw4; 34 report.rxdw5 = prxstat->rxdw5; 35 36 pattrib = &precvframe->u.hdr.attrib; 37 memset(pattrib, 0, sizeof(struct rx_pkt_attrib)); 38 39 /* update rx report to recv_frame attribute */ 40 pattrib->pkt_rpt_type = prxreport->c2h_ind ? C2H_PACKET : NORMAL_RX; 41 /* DBG_871X("%s: pkt_rpt_type =%d\n", __func__, pattrib->pkt_rpt_type); */ 42 43 if (pattrib->pkt_rpt_type == NORMAL_RX) { 44 /* Normal rx packet */ 45 /* update rx report to recv_frame attribute */ 46 pattrib->pkt_len = (u16)prxreport->pktlen; 47 pattrib->drvinfo_sz = (u8)(prxreport->drvinfosize << 3); 48 pattrib->physt = (u8)prxreport->physt; 49 50 pattrib->crc_err = (u8)prxreport->crc32; 51 pattrib->icv_err = (u8)prxreport->icverr; 52 53 pattrib->bdecrypted = (u8)(prxreport->swdec ? 0 : 1); 54 pattrib->encrypt = (u8)prxreport->security; 55 56 pattrib->qos = (u8)prxreport->qos; 57 pattrib->priority = (u8)prxreport->tid; 58 59 pattrib->amsdu = (u8)prxreport->amsdu; 60 61 pattrib->seq_num = (u16)prxreport->seq; 62 pattrib->frag_num = (u8)prxreport->frag; 63 pattrib->mfrag = (u8)prxreport->mf; 64 pattrib->mdata = (u8)prxreport->md; 65 66 pattrib->data_rate = (u8)prxreport->rx_rate; 67 } else { 68 pattrib->pkt_len = (u16)prxreport->pktlen; 69 } 70 } 71 72 /* 73 * Notice: 74 *Before calling this function, 75 *precvframe->u.hdr.rx_data should be ready! 76 */ 77 static void update_recvframe_phyinfo(union recv_frame *precvframe, 78 struct phy_stat *pphy_status) 79 { 80 struct adapter *padapter = precvframe->u.hdr.adapter; 81 struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib; 82 struct hal_com_data *p_hal_data = GET_HAL_DATA(padapter); 83 struct odm_phy_info *p_phy_info = 84 (struct odm_phy_info *)(&pattrib->phy_info); 85 86 u8 *wlanhdr; 87 u8 *my_bssid; 88 u8 *rx_bssid; 89 u8 *rx_ra; 90 u8 *my_hwaddr; 91 u8 *sa = NULL; 92 93 struct odm_packet_info pkt_info = { 94 .data_rate = 0x00, 95 .station_id = 0x00, 96 .bssid_match = false, 97 .to_self = false, 98 .is_beacon = false, 99 }; 100 101 /* _irqL irqL; */ 102 struct sta_priv *pstapriv; 103 struct sta_info *psta; 104 105 wlanhdr = get_recvframe_data(precvframe); 106 my_bssid = get_bssid(&padapter->mlmepriv); 107 rx_bssid = get_hdr_bssid(wlanhdr); 108 pkt_info.bssid_match = ((!IsFrameTypeCtrl(wlanhdr)) && 109 !pattrib->icv_err && !pattrib->crc_err && 110 ether_addr_equal(rx_bssid, my_bssid)); 111 112 rx_ra = get_ra(wlanhdr); 113 my_hwaddr = myid(&padapter->eeprompriv); 114 pkt_info.to_self = pkt_info.bssid_match && 115 ether_addr_equal(rx_ra, my_hwaddr); 116 117 118 pkt_info.is_beacon = pkt_info.bssid_match && 119 (GetFrameSubType(wlanhdr) == WIFI_BEACON); 120 121 sa = get_ta(wlanhdr); 122 123 pkt_info.station_id = 0xFF; 124 125 pstapriv = &padapter->stapriv; 126 psta = rtw_get_stainfo(pstapriv, sa); 127 if (psta) { 128 pkt_info.station_id = psta->mac_id; 129 /* DBG_8192C("%s ==> StationID(%d)\n", 130 * __func__, pkt_info.station_id); */ 131 } 132 pkt_info.data_rate = pattrib->data_rate; 133 134 /* rtl8723b_query_rx_phy_status(precvframe, pphy_status); */ 135 /* spin_lock_bh(&p_hal_data->odm_stainfo_lock); */ 136 ODM_PhyStatusQuery(&p_hal_data->odmpriv, p_phy_info, 137 (u8 *)pphy_status, &(pkt_info)); 138 if (psta) 139 psta->rssi = pattrib->phy_info.RecvSignalPower; 140 /* spin_unlock_bh(&p_hal_data->odm_stainfo_lock); */ 141 precvframe->u.hdr.psta = NULL; 142 if ( 143 pkt_info.bssid_match && 144 (check_fwstate(&padapter->mlmepriv, WIFI_AP_STATE) == true) 145 ) { 146 if (psta) { 147 precvframe->u.hdr.psta = psta; 148 rtl8723b_process_phy_info(padapter, precvframe); 149 } 150 } else if (pkt_info.to_self || pkt_info.is_beacon) { 151 u32 adhoc_state = WIFI_ADHOC_STATE | WIFI_ADHOC_MASTER_STATE; 152 if (check_fwstate(&padapter->mlmepriv, adhoc_state)) 153 if (psta) 154 precvframe->u.hdr.psta = psta; 155 rtl8723b_process_phy_info(padapter, precvframe); 156 } 157 } 158 159 static void rtl8723bs_c2h_packet_handler(struct adapter *padapter, 160 u8 *pbuf, u16 length) 161 { 162 u8 *tmp = NULL; 163 u8 res = false; 164 165 if (length == 0) 166 return; 167 168 /* DBG_871X("+%s() length =%d\n", __func__, length); */ 169 170 tmp = rtw_zmalloc(length); 171 if (!tmp) 172 return; 173 174 memcpy(tmp, pbuf, length); 175 176 res = rtw_c2h_packet_wk_cmd(padapter, tmp, length); 177 178 if (!res) 179 kfree(tmp); 180 181 /* DBG_871X("-%s res(%d)\n", __func__, res); */ 182 } 183 184 static inline union recv_frame *try_alloc_recvframe(struct recv_priv *precvpriv, 185 struct recv_buf *precvbuf) 186 { 187 union recv_frame *precvframe; 188 189 precvframe = rtw_alloc_recvframe(&precvpriv->free_recv_queue); 190 if (!precvframe) { 191 DBG_8192C("%s: no enough recv frame!\n", __func__); 192 rtw_enqueue_recvbuf_to_head(precvbuf, 193 &precvpriv->recv_buf_pending_queue); 194 195 /* The case of can't allocte recvframe should be temporary, */ 196 /* schedule again and hope recvframe is available next time. */ 197 tasklet_schedule(&precvpriv->recv_tasklet); 198 } 199 200 return precvframe; 201 } 202 203 static inline bool rx_crc_err(struct recv_priv *precvpriv, 204 struct hal_com_data *p_hal_data, 205 struct rx_pkt_attrib *pattrib, 206 union recv_frame *precvframe) 207 { 208 /* fix Hardware RX data error, drop whole recv_buffer */ 209 if ((!(p_hal_data->ReceiveConfig & RCR_ACRC32)) && pattrib->crc_err) { 210 DBG_8192C("%s()-%d: RX Warning! rx CRC ERROR !!\n", 211 __func__, __LINE__); 212 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 213 return true; 214 } 215 216 return false; 217 } 218 219 static inline bool pkt_exceeds_tail(struct recv_priv *precvpriv, 220 u8 *end, u8 *tail, 221 union recv_frame *precvframe) 222 { 223 if (end > tail) { 224 DBG_8192C("%s()-%d: : next pkt len(%p,%d) exceed ptail(%p)!\n", 225 __func__, __LINE__, ptr, pkt_offset, precvbuf->ptail); 226 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 227 return true; 228 } 229 230 return false; 231 } 232 233 static void rtl8723bs_recv_tasklet(unsigned long priv) 234 { 235 struct adapter *padapter; 236 struct hal_com_data *p_hal_data; 237 struct recv_priv *precvpriv; 238 struct recv_buf *precvbuf; 239 union recv_frame *precvframe; 240 struct rx_pkt_attrib *pattrib; 241 struct __queue *recv_buf_queue; 242 u8 *ptr; 243 u32 pkt_offset, skb_len, alloc_sz; 244 _pkt *pkt_copy = NULL; 245 u8 shift_sz = 0, rx_report_sz = 0; 246 247 padapter = (struct adapter *)priv; 248 p_hal_data = GET_HAL_DATA(padapter); 249 precvpriv = &padapter->recvpriv; 250 recv_buf_queue = &precvpriv->recv_buf_pending_queue; 251 252 do { 253 precvbuf = rtw_dequeue_recvbuf(recv_buf_queue); 254 if (!precvbuf) 255 break; 256 257 ptr = precvbuf->pdata; 258 259 while (ptr < precvbuf->ptail) { 260 precvframe = try_alloc_recvframe(precvpriv, precvbuf); 261 if (!precvframe) 262 return; 263 264 /* rx desc parsing */ 265 update_recvframe_attrib(padapter, precvframe, 266 (struct recv_stat *)ptr); 267 268 pattrib = &precvframe->u.hdr.attrib; 269 270 if (rx_crc_err(precvpriv, p_hal_data, 271 pattrib, precvframe)) 272 break; 273 274 rx_report_sz = RXDESC_SIZE + pattrib->drvinfo_sz; 275 pkt_offset = rx_report_sz + 276 pattrib->shift_sz + 277 pattrib->pkt_len; 278 279 if (pkt_exceeds_tail(precvpriv, ptr + pkt_offset, 280 precvbuf->ptail, precvframe)) 281 break; 282 283 if ((pattrib->crc_err) || (pattrib->icv_err)) { 284 DBG_8192C("%s: crc_err =%d icv_err =%d, skip!\n", 285 __func__, pattrib->crc_err, 286 pattrib->icv_err); 287 rtw_free_recvframe(precvframe, 288 &precvpriv->free_recv_queue); 289 } else { 290 /* Modified by Albert 20101213 */ 291 /* For 8 bytes IP header alignment. */ 292 if (pattrib->qos) /* Qos data, wireless lan header length is 26 */ 293 shift_sz = 6; 294 else 295 shift_sz = 0; 296 297 skb_len = pattrib->pkt_len; 298 299 /* for first fragment packet, driver need allocate 1536+drvinfo_sz+RXDESC_SIZE to defrag packet. */ 300 /* modify alloc_sz for recvive crc error packet by thomas 2011-06-02 */ 301 if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) { 302 if (skb_len <= 1650) 303 alloc_sz = 1664; 304 else 305 alloc_sz = skb_len + 14; 306 } else { 307 alloc_sz = skb_len; 308 /* 6 is for IP header 8 bytes alignment in QoS packet case. */ 309 /* 8 is for skb->data 4 bytes alignment. */ 310 alloc_sz += 14; 311 } 312 313 pkt_copy = rtw_skb_alloc(alloc_sz); 314 315 if (pkt_copy) { 316 pkt_copy->dev = padapter->pnetdev; 317 precvframe->u.hdr.pkt = pkt_copy; 318 skb_reserve(pkt_copy, 8 - ((SIZE_PTR)(pkt_copy->data) & 7));/* force pkt_copy->data at 8-byte alignment address */ 319 skb_reserve(pkt_copy, shift_sz);/* force ip_hdr at 8-byte alignment address according to shift_sz. */ 320 memcpy(pkt_copy->data, (ptr + rx_report_sz + pattrib->shift_sz), skb_len); 321 precvframe->u.hdr.rx_head = pkt_copy->head; 322 precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail = pkt_copy->data; 323 precvframe->u.hdr.rx_end = skb_end_pointer(pkt_copy); 324 } else { 325 if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) { 326 DBG_8192C("%s: alloc_skb fail, drop frag frame\n", __func__); 327 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 328 break; 329 } 330 331 precvframe->u.hdr.pkt = rtw_skb_clone(precvbuf->pskb); 332 if (precvframe->u.hdr.pkt) { 333 _pkt *pkt_clone = precvframe->u.hdr.pkt; 334 335 pkt_clone->data = ptr + rx_report_sz + pattrib->shift_sz; 336 skb_reset_tail_pointer(pkt_clone); 337 precvframe->u.hdr.rx_head = precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail 338 = pkt_clone->data; 339 precvframe->u.hdr.rx_end = pkt_clone->data + skb_len; 340 } else { 341 DBG_8192C("%s: rtw_skb_clone fail\n", __func__); 342 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 343 break; 344 } 345 } 346 347 recvframe_put(precvframe, skb_len); 348 /* recvframe_pull(precvframe, drvinfo_sz + RXDESC_SIZE); */ 349 350 if (p_hal_data->ReceiveConfig & RCR_APPFCS) 351 recvframe_pull_tail(precvframe, IEEE80211_FCS_LEN); 352 353 /* move to drv info position */ 354 ptr += RXDESC_SIZE; 355 356 /* update drv info */ 357 if (p_hal_data->ReceiveConfig & RCR_APP_BA_SSN) { 358 /* rtl8723s_update_bassn(padapter, pdrvinfo); */ 359 ptr += 4; 360 } 361 362 if (pattrib->pkt_rpt_type == NORMAL_RX) { /* Normal rx packet */ 363 if (pattrib->physt) 364 update_recvframe_phyinfo(precvframe, (struct phy_stat *)ptr); 365 366 if (rtw_recv_entry(precvframe) != _SUCCESS) { 367 RT_TRACE(_module_rtl871x_recv_c_, _drv_dump_, ("%s: rtw_recv_entry(precvframe) != _SUCCESS\n", __func__)); 368 } 369 } else if (pattrib->pkt_rpt_type == C2H_PACKET) { 370 C2H_EVT_HDR C2hEvent; 371 372 u16 len_c2h = pattrib->pkt_len; 373 u8 *pbuf_c2h = precvframe->u.hdr.rx_data; 374 u8 *pdata_c2h; 375 376 C2hEvent.CmdID = pbuf_c2h[0]; 377 C2hEvent.CmdSeq = pbuf_c2h[1]; 378 C2hEvent.CmdLen = (len_c2h-2); 379 pdata_c2h = pbuf_c2h+2; 380 381 if (C2hEvent.CmdID == C2H_CCX_TX_RPT) 382 CCX_FwC2HTxRpt_8723b(padapter, pdata_c2h, C2hEvent.CmdLen); 383 else 384 rtl8723bs_c2h_packet_handler(padapter, precvframe->u.hdr.rx_data, pattrib->pkt_len); 385 386 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 387 } 388 } 389 390 pkt_offset = _RND8(pkt_offset); 391 precvbuf->pdata += pkt_offset; 392 ptr = precvbuf->pdata; 393 precvframe = NULL; 394 pkt_copy = NULL; 395 } 396 397 rtw_enqueue_recvbuf(precvbuf, &precvpriv->free_recv_buf_queue); 398 } while (1); 399 } 400 401 /* 402 * Initialize recv private variable for hardware dependent 403 * 1. recv buf 404 * 2. recv tasklet 405 * 406 */ 407 s32 rtl8723bs_init_recv_priv(struct adapter *padapter) 408 { 409 s32 res; 410 u32 i, n; 411 struct recv_priv *precvpriv; 412 struct recv_buf *precvbuf; 413 414 res = _SUCCESS; 415 precvpriv = &padapter->recvpriv; 416 417 /* 3 1. init recv buffer */ 418 _rtw_init_queue(&precvpriv->free_recv_buf_queue); 419 _rtw_init_queue(&precvpriv->recv_buf_pending_queue); 420 421 n = NR_RECVBUFF * sizeof(struct recv_buf) + 4; 422 precvpriv->pallocated_recv_buf = rtw_zmalloc(n); 423 if (!precvpriv->pallocated_recv_buf) { 424 res = _FAIL; 425 RT_TRACE(_module_rtl871x_recv_c_, _drv_err_, ("alloc recv_buf fail!\n")); 426 goto exit; 427 } 428 429 precvpriv->precv_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_recv_buf), 4); 430 431 /* init each recv buffer */ 432 precvbuf = (struct recv_buf *)precvpriv->precv_buf; 433 for (i = 0; i < NR_RECVBUFF; i++) { 434 initrecvbuf(precvbuf, padapter); 435 436 if (!precvbuf->pskb) { 437 SIZE_PTR tmpaddr = 0; 438 SIZE_PTR alignment = 0; 439 440 precvbuf->pskb = rtw_skb_alloc(MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ); 441 442 if (precvbuf->pskb) { 443 precvbuf->pskb->dev = padapter->pnetdev; 444 445 tmpaddr = (SIZE_PTR)precvbuf->pskb->data; 446 alignment = tmpaddr & (RECVBUFF_ALIGN_SZ-1); 447 skb_reserve(precvbuf->pskb, (RECVBUFF_ALIGN_SZ - alignment)); 448 } 449 450 if (!precvbuf->pskb) { 451 DBG_871X("%s: alloc_skb fail!\n", __func__); 452 } 453 } 454 455 list_add_tail(&precvbuf->list, &precvpriv->free_recv_buf_queue.queue); 456 457 precvbuf++; 458 } 459 precvpriv->free_recv_buf_queue_cnt = i; 460 461 if (res == _FAIL) 462 goto initbuferror; 463 464 /* 3 2. init tasklet */ 465 tasklet_init(&precvpriv->recv_tasklet, rtl8723bs_recv_tasklet, 466 (unsigned long)padapter); 467 468 goto exit; 469 470 initbuferror: 471 precvbuf = (struct recv_buf *)precvpriv->precv_buf; 472 if (precvbuf) { 473 n = precvpriv->free_recv_buf_queue_cnt; 474 precvpriv->free_recv_buf_queue_cnt = 0; 475 for (i = 0; i < n ; i++) { 476 list_del_init(&precvbuf->list); 477 rtw_os_recvbuf_resource_free(padapter, precvbuf); 478 precvbuf++; 479 } 480 precvpriv->precv_buf = NULL; 481 } 482 483 if (precvpriv->pallocated_recv_buf) { 484 kfree(precvpriv->pallocated_recv_buf); 485 precvpriv->pallocated_recv_buf = NULL; 486 } 487 488 exit: 489 return res; 490 } 491 492 /* 493 * Free recv private variable of hardware dependent 494 * 1. recv buf 495 * 2. recv tasklet 496 * 497 */ 498 void rtl8723bs_free_recv_priv(struct adapter *padapter) 499 { 500 u32 i; 501 struct recv_priv *precvpriv; 502 struct recv_buf *precvbuf; 503 504 precvpriv = &padapter->recvpriv; 505 506 /* 3 1. kill tasklet */ 507 tasklet_kill(&precvpriv->recv_tasklet); 508 509 /* 3 2. free all recv buffers */ 510 precvbuf = (struct recv_buf *)precvpriv->precv_buf; 511 if (precvbuf) { 512 precvpriv->free_recv_buf_queue_cnt = 0; 513 for (i = 0; i < NR_RECVBUFF; i++) { 514 list_del_init(&precvbuf->list); 515 rtw_os_recvbuf_resource_free(padapter, precvbuf); 516 precvbuf++; 517 } 518 precvpriv->precv_buf = NULL; 519 } 520 521 if (precvpriv->pallocated_recv_buf) { 522 kfree(precvpriv->pallocated_recv_buf); 523 precvpriv->pallocated_recv_buf = NULL; 524 } 525 } 526