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 struct rxreport_8723b *prxreport = (struct rxreport_8723b *)&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 42 if (pattrib->pkt_rpt_type == NORMAL_RX) { 43 /* Normal rx packet */ 44 /* update rx report to recv_frame attribute */ 45 pattrib->pkt_len = (u16)prxreport->pktlen; 46 pattrib->drvinfo_sz = (u8)(prxreport->drvinfosize << 3); 47 pattrib->physt = (u8)prxreport->physt; 48 49 pattrib->crc_err = (u8)prxreport->crc32; 50 pattrib->icv_err = (u8)prxreport->icverr; 51 52 pattrib->bdecrypted = (u8)(prxreport->swdec ? 0 : 1); 53 pattrib->encrypt = (u8)prxreport->security; 54 55 pattrib->qos = (u8)prxreport->qos; 56 pattrib->priority = (u8)prxreport->tid; 57 58 pattrib->amsdu = (u8)prxreport->amsdu; 59 60 pattrib->seq_num = (u16)prxreport->seq; 61 pattrib->frag_num = (u8)prxreport->frag; 62 pattrib->mfrag = (u8)prxreport->mf; 63 pattrib->mdata = (u8)prxreport->md; 64 65 pattrib->data_rate = (u8)prxreport->rx_rate; 66 } else { 67 pattrib->pkt_len = (u16)prxreport->pktlen; 68 } 69 } 70 71 /* 72 * Notice: 73 *Before calling this function, 74 *precvframe->u.hdr.rx_data should be ready! 75 */ 76 static void update_recvframe_phyinfo(union recv_frame *precvframe, 77 struct phy_stat *pphy_status) 78 { 79 struct adapter *padapter = precvframe->u.hdr.adapter; 80 struct rx_pkt_attrib *pattrib = &precvframe->u.hdr.attrib; 81 struct hal_com_data *p_hal_data = GET_HAL_DATA(padapter); 82 struct odm_phy_info *p_phy_info = 83 (struct odm_phy_info *)(&pattrib->phy_info); 84 85 u8 *wlanhdr; 86 u8 *my_bssid; 87 u8 *rx_bssid; 88 u8 *rx_ra; 89 u8 *my_hwaddr; 90 u8 *sa = NULL; 91 92 struct odm_packet_info pkt_info = { 93 .data_rate = 0x00, 94 .station_id = 0x00, 95 .bssid_match = false, 96 .to_self = false, 97 .is_beacon = false, 98 }; 99 100 /* unsigned long irqL; */ 101 struct sta_priv *pstapriv; 102 struct sta_info *psta; 103 104 wlanhdr = get_recvframe_data(precvframe); 105 my_bssid = get_bssid(&padapter->mlmepriv); 106 rx_bssid = get_hdr_bssid(wlanhdr); 107 pkt_info.bssid_match = ((!IsFrameTypeCtrl(wlanhdr)) && 108 !pattrib->icv_err && !pattrib->crc_err && 109 ether_addr_equal(rx_bssid, my_bssid)); 110 111 rx_ra = rtl8723bs_get_ra(wlanhdr); 112 my_hwaddr = myid(&padapter->eeprompriv); 113 pkt_info.to_self = pkt_info.bssid_match && 114 ether_addr_equal(rx_ra, my_hwaddr); 115 116 117 pkt_info.is_beacon = pkt_info.bssid_match && 118 (GetFrameSubType(wlanhdr) == WIFI_BEACON); 119 120 sa = get_ta(wlanhdr); 121 122 pkt_info.station_id = 0xFF; 123 124 pstapriv = &padapter->stapriv; 125 psta = rtw_get_stainfo(pstapriv, sa); 126 if (psta) 127 pkt_info.station_id = psta->mac_id; 128 129 pkt_info.data_rate = pattrib->data_rate; 130 131 /* rtl8723b_query_rx_phy_status(precvframe, pphy_status); */ 132 /* spin_lock_bh(&p_hal_data->odm_stainfo_lock); */ 133 ODM_PhyStatusQuery(&p_hal_data->odmpriv, p_phy_info, 134 (u8 *)pphy_status, &(pkt_info)); 135 if (psta) 136 psta->rssi = pattrib->phy_info.RecvSignalPower; 137 /* spin_unlock_bh(&p_hal_data->odm_stainfo_lock); */ 138 precvframe->u.hdr.psta = NULL; 139 if ( 140 pkt_info.bssid_match && 141 (check_fwstate(&padapter->mlmepriv, WIFI_AP_STATE) == true) 142 ) { 143 if (psta) { 144 precvframe->u.hdr.psta = psta; 145 rtl8723b_process_phy_info(padapter, precvframe); 146 } 147 } else if (pkt_info.to_self || pkt_info.is_beacon) { 148 u32 adhoc_state = WIFI_ADHOC_STATE | WIFI_ADHOC_MASTER_STATE; 149 if (check_fwstate(&padapter->mlmepriv, adhoc_state)) 150 if (psta) 151 precvframe->u.hdr.psta = psta; 152 rtl8723b_process_phy_info(padapter, precvframe); 153 } 154 } 155 156 static void rtl8723bs_c2h_packet_handler(struct adapter *padapter, 157 u8 *pbuf, u16 length) 158 { 159 u8 *tmp = NULL; 160 u8 res = false; 161 162 if (length == 0) 163 return; 164 165 tmp = rtw_zmalloc(length); 166 if (!tmp) 167 return; 168 169 memcpy(tmp, pbuf, length); 170 171 res = rtw_c2h_packet_wk_cmd(padapter, tmp, length); 172 173 if (!res) 174 kfree(tmp); 175 } 176 177 static inline union recv_frame *try_alloc_recvframe(struct recv_priv *precvpriv, 178 struct recv_buf *precvbuf) 179 { 180 union recv_frame *precvframe; 181 182 precvframe = rtw_alloc_recvframe(&precvpriv->free_recv_queue); 183 if (!precvframe) { 184 rtw_enqueue_recvbuf_to_head(precvbuf, 185 &precvpriv->recv_buf_pending_queue); 186 187 /* The case of can't allocate recvframe should be temporary, */ 188 /* schedule again and hope recvframe is available next time. */ 189 tasklet_schedule(&precvpriv->recv_tasklet); 190 } 191 192 return precvframe; 193 } 194 195 static inline bool rx_crc_err(struct recv_priv *precvpriv, 196 struct hal_com_data *p_hal_data, 197 struct rx_pkt_attrib *pattrib, 198 union recv_frame *precvframe) 199 { 200 /* fix Hardware RX data error, drop whole recv_buffer */ 201 if ((!(p_hal_data->ReceiveConfig & RCR_ACRC32)) && pattrib->crc_err) { 202 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 203 return true; 204 } 205 206 return false; 207 } 208 209 static inline bool pkt_exceeds_tail(struct recv_priv *precvpriv, 210 u8 *end, u8 *tail, 211 union recv_frame *precvframe) 212 { 213 if (end > tail) { 214 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 215 return true; 216 } 217 218 return false; 219 } 220 221 static void rtl8723bs_recv_tasklet(struct tasklet_struct *t) 222 { 223 struct adapter *padapter = from_tasklet(padapter, t, 224 recvpriv.recv_tasklet); 225 struct hal_com_data *p_hal_data; 226 struct recv_priv *precvpriv; 227 struct recv_buf *precvbuf; 228 union recv_frame *precvframe; 229 struct rx_pkt_attrib *pattrib; 230 struct __queue *recv_buf_queue; 231 u8 *ptr; 232 u32 pkt_offset, skb_len, alloc_sz; 233 struct sk_buff *pkt_copy = NULL; 234 u8 shift_sz = 0, rx_report_sz = 0; 235 236 p_hal_data = GET_HAL_DATA(padapter); 237 precvpriv = &padapter->recvpriv; 238 recv_buf_queue = &precvpriv->recv_buf_pending_queue; 239 240 do { 241 precvbuf = rtw_dequeue_recvbuf(recv_buf_queue); 242 if (!precvbuf) 243 break; 244 245 ptr = precvbuf->pdata; 246 247 while (ptr < precvbuf->ptail) { 248 precvframe = try_alloc_recvframe(precvpriv, precvbuf); 249 if (!precvframe) 250 return; 251 252 /* rx desc parsing */ 253 update_recvframe_attrib(padapter, precvframe, 254 (struct recv_stat *)ptr); 255 256 pattrib = &precvframe->u.hdr.attrib; 257 258 if (rx_crc_err(precvpriv, p_hal_data, 259 pattrib, precvframe)) 260 break; 261 262 rx_report_sz = RXDESC_SIZE + pattrib->drvinfo_sz; 263 pkt_offset = rx_report_sz + 264 pattrib->shift_sz + 265 pattrib->pkt_len; 266 267 if (pkt_exceeds_tail(precvpriv, ptr + pkt_offset, 268 precvbuf->ptail, precvframe)) 269 break; 270 271 if ((pattrib->crc_err) || (pattrib->icv_err)) { 272 rtw_free_recvframe(precvframe, 273 &precvpriv->free_recv_queue); 274 } else { 275 /* Modified by Albert 20101213 */ 276 /* For 8 bytes IP header alignment. */ 277 if (pattrib->qos) /* Qos data, wireless lan header length is 26 */ 278 shift_sz = 6; 279 else 280 shift_sz = 0; 281 282 skb_len = pattrib->pkt_len; 283 284 /* for first fragment packet, driver need allocate 1536+drvinfo_sz+RXDESC_SIZE to defrag packet. */ 285 /* modify alloc_sz for recvive crc error packet by thomas 2011-06-02 */ 286 if ((pattrib->mfrag == 1) && (pattrib->frag_num == 0)) { 287 if (skb_len <= 1650) 288 alloc_sz = 1664; 289 else 290 alloc_sz = skb_len + 14; 291 } else { 292 alloc_sz = skb_len; 293 /* 6 is for IP header 8 bytes alignment in QoS packet case. */ 294 /* 8 is for skb->data 4 bytes alignment. */ 295 alloc_sz += 14; 296 } 297 298 pkt_copy = rtw_skb_alloc(alloc_sz); 299 if (!pkt_copy) { 300 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 301 break; 302 } 303 304 pkt_copy->dev = padapter->pnetdev; 305 precvframe->u.hdr.pkt = pkt_copy; 306 skb_reserve(pkt_copy, 8 - ((SIZE_PTR)(pkt_copy->data) & 7));/* force pkt_copy->data at 8-byte alignment address */ 307 skb_reserve(pkt_copy, shift_sz);/* force ip_hdr at 8-byte alignment address according to shift_sz. */ 308 memcpy(pkt_copy->data, (ptr + rx_report_sz + pattrib->shift_sz), skb_len); 309 precvframe->u.hdr.rx_head = pkt_copy->head; 310 precvframe->u.hdr.rx_data = precvframe->u.hdr.rx_tail = pkt_copy->data; 311 precvframe->u.hdr.rx_end = skb_end_pointer(pkt_copy); 312 313 recvframe_put(precvframe, skb_len); 314 /* recvframe_pull(precvframe, drvinfo_sz + RXDESC_SIZE); */ 315 316 if (p_hal_data->ReceiveConfig & RCR_APPFCS) 317 recvframe_pull_tail(precvframe, IEEE80211_FCS_LEN); 318 319 /* move to drv info position */ 320 ptr += RXDESC_SIZE; 321 322 /* update drv info */ 323 if (p_hal_data->ReceiveConfig & RCR_APP_BA_SSN) { 324 /* rtl8723s_update_bassn(padapter, pdrvinfo); */ 325 ptr += 4; 326 } 327 328 if (pattrib->pkt_rpt_type == NORMAL_RX) { /* Normal rx packet */ 329 if (pattrib->physt) 330 update_recvframe_phyinfo(precvframe, (struct phy_stat *)ptr); 331 332 rtw_recv_entry(precvframe); 333 } else if (pattrib->pkt_rpt_type == C2H_PACKET) { 334 struct c2h_evt_hdr_t C2hEvent; 335 336 u16 len_c2h = pattrib->pkt_len; 337 u8 *pbuf_c2h = precvframe->u.hdr.rx_data; 338 u8 *pdata_c2h; 339 340 C2hEvent.CmdID = pbuf_c2h[0]; 341 C2hEvent.CmdSeq = pbuf_c2h[1]; 342 C2hEvent.CmdLen = (len_c2h-2); 343 pdata_c2h = pbuf_c2h+2; 344 345 if (C2hEvent.CmdID == C2H_CCX_TX_RPT) 346 CCX_FwC2HTxRpt_8723b(padapter, pdata_c2h, C2hEvent.CmdLen); 347 else 348 rtl8723bs_c2h_packet_handler(padapter, precvframe->u.hdr.rx_data, pattrib->pkt_len); 349 350 rtw_free_recvframe(precvframe, &precvpriv->free_recv_queue); 351 } 352 } 353 354 pkt_offset = round_up(pkt_offset, 8); 355 precvbuf->pdata += pkt_offset; 356 ptr = precvbuf->pdata; 357 precvframe = NULL; 358 pkt_copy = NULL; 359 } 360 361 rtw_enqueue_recvbuf(precvbuf, &precvpriv->free_recv_buf_queue); 362 } while (1); 363 } 364 365 /* 366 * Initialize recv private variable for hardware dependent 367 * 1. recv buf 368 * 2. recv tasklet 369 * 370 */ 371 s32 rtl8723bs_init_recv_priv(struct adapter *padapter) 372 { 373 s32 res; 374 u32 i, n; 375 struct recv_priv *precvpriv; 376 struct recv_buf *precvbuf; 377 378 res = _SUCCESS; 379 precvpriv = &padapter->recvpriv; 380 381 /* 3 1. init recv buffer */ 382 _rtw_init_queue(&precvpriv->free_recv_buf_queue); 383 _rtw_init_queue(&precvpriv->recv_buf_pending_queue); 384 385 n = NR_RECVBUFF * sizeof(struct recv_buf) + 4; 386 precvpriv->pallocated_recv_buf = rtw_zmalloc(n); 387 if (!precvpriv->pallocated_recv_buf) { 388 res = _FAIL; 389 goto exit; 390 } 391 392 precvpriv->precv_buf = (u8 *)N_BYTE_ALIGMENT((SIZE_PTR)(precvpriv->pallocated_recv_buf), 4); 393 394 /* init each recv buffer */ 395 precvbuf = (struct recv_buf *)precvpriv->precv_buf; 396 for (i = 0; i < NR_RECVBUFF; i++) { 397 initrecvbuf(precvbuf, padapter); 398 399 if (!precvbuf->pskb) { 400 SIZE_PTR tmpaddr = 0; 401 SIZE_PTR alignment = 0; 402 403 precvbuf->pskb = rtw_skb_alloc(MAX_RECVBUF_SZ + RECVBUFF_ALIGN_SZ); 404 405 if (precvbuf->pskb) { 406 precvbuf->pskb->dev = padapter->pnetdev; 407 408 tmpaddr = (SIZE_PTR)precvbuf->pskb->data; 409 alignment = tmpaddr & (RECVBUFF_ALIGN_SZ-1); 410 skb_reserve(precvbuf->pskb, (RECVBUFF_ALIGN_SZ - alignment)); 411 } 412 } 413 414 list_add_tail(&precvbuf->list, &precvpriv->free_recv_buf_queue.queue); 415 416 precvbuf++; 417 } 418 precvpriv->free_recv_buf_queue_cnt = i; 419 420 if (res == _FAIL) 421 goto initbuferror; 422 423 /* 3 2. init tasklet */ 424 tasklet_setup(&precvpriv->recv_tasklet, rtl8723bs_recv_tasklet); 425 426 goto exit; 427 428 initbuferror: 429 precvbuf = (struct recv_buf *)precvpriv->precv_buf; 430 if (precvbuf) { 431 n = precvpriv->free_recv_buf_queue_cnt; 432 precvpriv->free_recv_buf_queue_cnt = 0; 433 for (i = 0; i < n ; i++) { 434 list_del_init(&precvbuf->list); 435 rtw_os_recvbuf_resource_free(padapter, precvbuf); 436 precvbuf++; 437 } 438 precvpriv->precv_buf = NULL; 439 } 440 441 kfree(precvpriv->pallocated_recv_buf); 442 precvpriv->pallocated_recv_buf = NULL; 443 444 exit: 445 return res; 446 } 447 448 /* 449 * Free recv private variable of hardware dependent 450 * 1. recv buf 451 * 2. recv tasklet 452 * 453 */ 454 void rtl8723bs_free_recv_priv(struct adapter *padapter) 455 { 456 u32 i; 457 struct recv_priv *precvpriv; 458 struct recv_buf *precvbuf; 459 460 precvpriv = &padapter->recvpriv; 461 462 /* 3 1. kill tasklet */ 463 tasklet_kill(&precvpriv->recv_tasklet); 464 465 /* 3 2. free all recv buffers */ 466 precvbuf = (struct recv_buf *)precvpriv->precv_buf; 467 if (precvbuf) { 468 precvpriv->free_recv_buf_queue_cnt = 0; 469 for (i = 0; i < NR_RECVBUFF; i++) { 470 list_del_init(&precvbuf->list); 471 rtw_os_recvbuf_resource_free(padapter, precvbuf); 472 precvbuf++; 473 } 474 precvpriv->precv_buf = NULL; 475 } 476 477 kfree(precvpriv->pallocated_recv_buf); 478 precvpriv->pallocated_recv_buf = NULL; 479 } 480