1 // SPDX-License-Identifier: GPL-2.0 2 /****************************************************************************** 3 * rtl871x_xmit.c 4 * 5 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved. 6 * Linux device driver for RTL8192SU 7 * 8 * Modifications for inclusion into the Linux staging tree are 9 * Copyright(c) 2010 Larry Finger. All rights reserved. 10 * 11 * Contact information: 12 * WLAN FAE <wlanfae@realtek.com> 13 * Larry Finger <Larry.Finger@lwfinger.net> 14 * 15 ******************************************************************************/ 16 17 #define _RTL871X_XMIT_C_ 18 19 #include "osdep_service.h" 20 #include "drv_types.h" 21 #include "wifi.h" 22 #include "osdep_intf.h" 23 #include "usb_ops.h" 24 25 26 static const u8 P802_1H_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0xf8}; 27 static const u8 RFC1042_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0x00}; 28 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry); 29 static void alloc_hwxmits(struct _adapter *padapter); 30 static void free_hwxmits(struct _adapter *padapter); 31 32 static void _init_txservq(struct tx_servq *ptxservq) 33 { 34 INIT_LIST_HEAD(&ptxservq->tx_pending); 35 _init_queue(&ptxservq->sta_pending); 36 ptxservq->qcnt = 0; 37 } 38 39 void _r8712_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv) 40 { 41 memset((unsigned char *)psta_xmitpriv, 0, 42 sizeof(struct sta_xmit_priv)); 43 spin_lock_init(&psta_xmitpriv->lock); 44 _init_txservq(&psta_xmitpriv->be_q); 45 _init_txservq(&psta_xmitpriv->bk_q); 46 _init_txservq(&psta_xmitpriv->vi_q); 47 _init_txservq(&psta_xmitpriv->vo_q); 48 INIT_LIST_HEAD(&psta_xmitpriv->legacy_dz); 49 INIT_LIST_HEAD(&psta_xmitpriv->apsd); 50 } 51 52 int _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv, 53 struct _adapter *padapter) 54 { 55 sint i; 56 struct xmit_buf *pxmitbuf; 57 struct xmit_frame *pxframe; 58 59 memset((unsigned char *)pxmitpriv, 0, sizeof(struct xmit_priv)); 60 spin_lock_init(&pxmitpriv->lock); 61 /* 62 *Please insert all the queue initialization using _init_queue below 63 */ 64 pxmitpriv->adapter = padapter; 65 _init_queue(&pxmitpriv->be_pending); 66 _init_queue(&pxmitpriv->bk_pending); 67 _init_queue(&pxmitpriv->vi_pending); 68 _init_queue(&pxmitpriv->vo_pending); 69 _init_queue(&pxmitpriv->bm_pending); 70 _init_queue(&pxmitpriv->legacy_dz_queue); 71 _init_queue(&pxmitpriv->apsd_queue); 72 _init_queue(&pxmitpriv->free_xmit_queue); 73 /* 74 * Please allocate memory with sz = (struct xmit_frame) * NR_XMITFRAME, 75 * and initialize free_xmit_frame below. 76 * Please also apply free_txobj to link_up all the xmit_frames... 77 */ 78 pxmitpriv->pallocated_frame_buf = 79 kmalloc(NR_XMITFRAME * sizeof(struct xmit_frame) + 4, 80 GFP_ATOMIC); 81 if (!pxmitpriv->pallocated_frame_buf) { 82 pxmitpriv->pxmit_frame_buf = NULL; 83 return -ENOMEM; 84 } 85 pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 - 86 ((addr_t) (pxmitpriv->pallocated_frame_buf) & 3); 87 pxframe = (struct xmit_frame *) pxmitpriv->pxmit_frame_buf; 88 for (i = 0; i < NR_XMITFRAME; i++) { 89 INIT_LIST_HEAD(&(pxframe->list)); 90 pxframe->padapter = padapter; 91 pxframe->frame_tag = DATA_FRAMETAG; 92 pxframe->pkt = NULL; 93 pxframe->buf_addr = NULL; 94 pxframe->pxmitbuf = NULL; 95 list_add_tail(&(pxframe->list), 96 &(pxmitpriv->free_xmit_queue.queue)); 97 pxframe++; 98 } 99 pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME; 100 /* 101 * init xmit hw_txqueue 102 */ 103 _r8712_init_hw_txqueue(&pxmitpriv->be_txqueue, BE_QUEUE_INX); 104 _r8712_init_hw_txqueue(&pxmitpriv->bk_txqueue, BK_QUEUE_INX); 105 _r8712_init_hw_txqueue(&pxmitpriv->vi_txqueue, VI_QUEUE_INX); 106 _r8712_init_hw_txqueue(&pxmitpriv->vo_txqueue, VO_QUEUE_INX); 107 _r8712_init_hw_txqueue(&pxmitpriv->bmc_txqueue, BMC_QUEUE_INX); 108 pxmitpriv->frag_len = MAX_FRAG_THRESHOLD; 109 pxmitpriv->txirp_cnt = 1; 110 /*per AC pending irp*/ 111 pxmitpriv->beq_cnt = 0; 112 pxmitpriv->bkq_cnt = 0; 113 pxmitpriv->viq_cnt = 0; 114 pxmitpriv->voq_cnt = 0; 115 /*init xmit_buf*/ 116 _init_queue(&pxmitpriv->free_xmitbuf_queue); 117 _init_queue(&pxmitpriv->pending_xmitbuf_queue); 118 pxmitpriv->pallocated_xmitbuf = 119 kmalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4, GFP_ATOMIC); 120 if (!pxmitpriv->pallocated_xmitbuf) { 121 kfree(pxmitpriv->pallocated_frame_buf); 122 pxmitpriv->pallocated_frame_buf = NULL; 123 return -ENOMEM; 124 } 125 pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 - 126 ((addr_t)(pxmitpriv->pallocated_xmitbuf) & 3); 127 pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf; 128 for (i = 0; i < NR_XMITBUFF; i++) { 129 INIT_LIST_HEAD(&pxmitbuf->list); 130 pxmitbuf->pallocated_buf = 131 kmalloc(MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ, GFP_ATOMIC); 132 if (!pxmitbuf->pallocated_buf) 133 return -ENOMEM; 134 pxmitbuf->pbuf = pxmitbuf->pallocated_buf + XMITBUF_ALIGN_SZ - 135 ((addr_t) (pxmitbuf->pallocated_buf) & 136 (XMITBUF_ALIGN_SZ - 1)); 137 if (r8712_xmit_resource_alloc(padapter, pxmitbuf)) 138 return -ENOMEM; 139 list_add_tail(&pxmitbuf->list, 140 &(pxmitpriv->free_xmitbuf_queue.queue)); 141 pxmitbuf++; 142 } 143 pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF; 144 INIT_WORK(&padapter->wk_filter_rx_ff0, r8712_SetFilter); 145 alloc_hwxmits(padapter); 146 init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry); 147 tasklet_init(&pxmitpriv->xmit_tasklet, r8712_xmit_bh, 148 (unsigned long)padapter); 149 return 0; 150 } 151 152 void _free_xmit_priv(struct xmit_priv *pxmitpriv) 153 { 154 int i; 155 struct _adapter *padapter = pxmitpriv->adapter; 156 struct xmit_frame *pxmitframe = (struct xmit_frame *) 157 pxmitpriv->pxmit_frame_buf; 158 struct xmit_buf *pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf; 159 160 if (pxmitpriv->pxmit_frame_buf == NULL) 161 return; 162 for (i = 0; i < NR_XMITFRAME; i++) { 163 r8712_xmit_complete(padapter, pxmitframe); 164 pxmitframe++; 165 } 166 for (i = 0; i < NR_XMITBUFF; i++) { 167 r8712_xmit_resource_free(padapter, pxmitbuf); 168 kfree(pxmitbuf->pallocated_buf); 169 pxmitbuf++; 170 } 171 kfree(pxmitpriv->pallocated_frame_buf); 172 kfree(pxmitpriv->pallocated_xmitbuf); 173 free_hwxmits(padapter); 174 } 175 176 int r8712_update_attrib(struct _adapter *padapter, _pkt *pkt, 177 struct pkt_attrib *pattrib) 178 { 179 struct pkt_file pktfile; 180 struct sta_info *psta = NULL; 181 struct ethhdr etherhdr; 182 183 struct tx_cmd txdesc; 184 185 bool bmcast; 186 struct sta_priv *pstapriv = &padapter->stapriv; 187 struct security_priv *psecuritypriv = &padapter->securitypriv; 188 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 189 struct qos_priv *pqospriv = &pmlmepriv->qospriv; 190 191 _r8712_open_pktfile(pkt, &pktfile); 192 193 _r8712_pktfile_read(&pktfile, (unsigned char *)ðerhdr, ETH_HLEN); 194 195 pattrib->ether_type = ntohs(etherhdr.h_proto); 196 197 /* 198 * If driver xmit ARP packet, driver can set ps mode to initial 199 * setting. It stands for getting DHCP or fix IP. 200 */ 201 if (pattrib->ether_type == 0x0806) { 202 if (padapter->pwrctrlpriv.pwr_mode != 203 padapter->registrypriv.power_mgnt) { 204 del_timer_sync(&pmlmepriv->dhcp_timer); 205 r8712_set_ps_mode(padapter, 206 padapter->registrypriv.power_mgnt, 207 padapter->registrypriv.smart_ps); 208 } 209 } 210 211 memcpy(pattrib->dst, ðerhdr.h_dest, ETH_ALEN); 212 memcpy(pattrib->src, ðerhdr.h_source, ETH_ALEN); 213 pattrib->pctrl = 0; 214 if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) || 215 check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) { 216 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 217 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 218 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) { 219 memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN); 220 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 221 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) { 222 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 223 memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN); 224 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) { 225 /*firstly, filter packet not belongs to mp*/ 226 if (pattrib->ether_type != 0x8712) 227 return -EINVAL; 228 /* for mp storing the txcmd per packet, 229 * according to the info of txcmd to update pattrib 230 */ 231 /*get MP_TXDESC_SIZE bytes txcmd per packet*/ 232 _r8712_pktfile_read(&pktfile, (u8 *)&txdesc, TXDESC_SIZE); 233 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 234 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 235 pattrib->pctrl = 1; 236 } 237 /* r8712_xmitframe_coalesce() overwrite this!*/ 238 pattrib->pktlen = pktfile.pkt_len; 239 if (pattrib->ether_type == ETH_P_IP) { 240 /* The following is for DHCP and ARP packet, we use cck1M to 241 * tx these packets and let LPS awake some time 242 * to prevent DHCP protocol fail 243 */ 244 u8 tmp[24]; 245 246 _r8712_pktfile_read(&pktfile, &tmp[0], 24); 247 pattrib->dhcp_pkt = 0; 248 if (pktfile.pkt_len > 282) {/*MINIMUM_DHCP_PACKET_SIZE)*/ 249 if (pattrib->ether_type == ETH_P_IP) {/* IP header*/ 250 if (((tmp[21] == 68) && (tmp[23] == 67)) || 251 ((tmp[21] == 67) && (tmp[23] == 68))) { 252 /* 68 : UDP BOOTP client 253 * 67 : UDP BOOTP server 254 * Use low rate to send DHCP packet. 255 */ 256 pattrib->dhcp_pkt = 1; 257 } 258 } 259 } 260 } 261 bmcast = is_multicast_ether_addr(pattrib->ra); 262 /* get sta_info*/ 263 if (bmcast) { 264 psta = r8712_get_bcmc_stainfo(padapter); 265 pattrib->mac_id = 4; 266 } else { 267 if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) { 268 psta = r8712_get_stainfo(pstapriv, 269 get_bssid(pmlmepriv)); 270 pattrib->mac_id = 5; 271 } else { 272 psta = r8712_get_stainfo(pstapriv, pattrib->ra); 273 if (psta == NULL) /* drop the pkt */ 274 return -ENOMEM; 275 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) 276 pattrib->mac_id = 5; 277 else 278 pattrib->mac_id = psta->mac_id; 279 } 280 } 281 282 if (psta) { 283 pattrib->psta = psta; 284 } else { 285 /* if we cannot get psta => drrp the pkt */ 286 return -ENOMEM; 287 } 288 289 pattrib->ack_policy = 0; 290 /* get ether_hdr_len */ 291 pattrib->pkt_hdrlen = ETH_HLEN; 292 293 if (pqospriv->qos_option) { 294 r8712_set_qos(&pktfile, pattrib); 295 } else { 296 pattrib->hdrlen = WLAN_HDR_A3_LEN; 297 pattrib->subtype = WIFI_DATA_TYPE; 298 pattrib->priority = 0; 299 } 300 if (psta->ieee8021x_blocked) { 301 pattrib->encrypt = 0; 302 if ((pattrib->ether_type != 0x888e) && 303 !check_fwstate(pmlmepriv, WIFI_MP_STATE)) 304 return -EINVAL; 305 } else { 306 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast); 307 } 308 switch (pattrib->encrypt) { 309 case _WEP40_: 310 case _WEP104_: 311 pattrib->iv_len = 4; 312 pattrib->icv_len = 4; 313 break; 314 case _TKIP_: 315 pattrib->iv_len = 8; 316 pattrib->icv_len = 4; 317 if (padapter->securitypriv.busetkipkey == _FAIL) 318 return -EINVAL; 319 break; 320 case _AES_: 321 pattrib->iv_len = 8; 322 pattrib->icv_len = 8; 323 break; 324 default: 325 pattrib->iv_len = 0; 326 pattrib->icv_len = 0; 327 break; 328 } 329 330 if (pattrib->encrypt && 331 (padapter->securitypriv.sw_encrypt || 332 !psecuritypriv->hw_decrypted)) 333 pattrib->bswenc = true; 334 else 335 pattrib->bswenc = false; 336 /* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite 337 * some settings above. 338 */ 339 if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) 340 pattrib->priority = 341 (le32_to_cpu(txdesc.txdw1) >> QSEL_SHT) & 0x1f; 342 return 0; 343 } 344 345 static int xmitframe_addmic(struct _adapter *padapter, 346 struct xmit_frame *pxmitframe) 347 { 348 u32 curfragnum, length; 349 u8 *pframe, *payload, mic[8]; 350 struct mic_data micdata; 351 struct sta_info *stainfo; 352 struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv); 353 struct pkt_attrib *pattrib = &pxmitframe->attrib; 354 struct security_priv *psecpriv = &padapter->securitypriv; 355 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 356 u8 priority[4] = {0x0, 0x0, 0x0, 0x0}; 357 bool bmcst = is_multicast_ether_addr(pattrib->ra); 358 359 if (pattrib->psta) 360 stainfo = pattrib->psta; 361 else 362 stainfo = r8712_get_stainfo(&padapter->stapriv, 363 &pattrib->ra[0]); 364 if (pattrib->encrypt == _TKIP_) { 365 /*encode mic code*/ 366 if (stainfo != NULL) { 367 u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 368 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 369 0x0, 0x0}; 370 pframe = pxmitframe->buf_addr + TXDESC_OFFSET; 371 if (bmcst) { 372 if (!memcmp(psecpriv->XGrptxmickey 373 [psecpriv->XGrpKeyid].skey, 374 null_key, 16)) 375 return -ENOMEM; 376 /*start to calculate the mic code*/ 377 r8712_secmicsetkey(&micdata, 378 psecpriv->XGrptxmickey 379 [psecpriv->XGrpKeyid].skey); 380 } else { 381 if (!memcmp(&stainfo->tkiptxmickey.skey[0], 382 null_key, 16)) 383 return -ENOMEM; 384 /* start to calculate the mic code */ 385 r8712_secmicsetkey(&micdata, 386 &stainfo->tkiptxmickey.skey[0]); 387 } 388 if (pframe[1] & 1) { /* ToDS==1 */ 389 r8712_secmicappend(&micdata, 390 &pframe[16], 6); /*DA*/ 391 if (pframe[1] & 2) /* From Ds==1 */ 392 r8712_secmicappend(&micdata, 393 &pframe[24], 6); 394 else 395 r8712_secmicappend(&micdata, 396 &pframe[10], 6); 397 } else { /* ToDS==0 */ 398 r8712_secmicappend(&micdata, 399 &pframe[4], 6); /* DA */ 400 if (pframe[1] & 2) /* From Ds==1 */ 401 r8712_secmicappend(&micdata, 402 &pframe[16], 6); 403 else 404 r8712_secmicappend(&micdata, 405 &pframe[10], 6); 406 } 407 if (pqospriv->qos_option == 1) 408 priority[0] = (u8)pxmitframe->attrib.priority; 409 r8712_secmicappend(&micdata, &priority[0], 4); 410 payload = pframe; 411 for (curfragnum = 0; curfragnum < pattrib->nr_frags; 412 curfragnum++) { 413 payload = (u8 *)RND4((addr_t)(payload)); 414 payload += pattrib->hdrlen + pattrib->iv_len; 415 if ((curfragnum + 1) == pattrib->nr_frags) { 416 length = pattrib->last_txcmdsz - 417 pattrib->hdrlen - 418 pattrib->iv_len - 419 ((psecpriv->sw_encrypt) 420 ? pattrib->icv_len : 0); 421 r8712_secmicappend(&micdata, payload, 422 length); 423 payload = payload + length; 424 } else { 425 length = pxmitpriv->frag_len - 426 pattrib->hdrlen - pattrib->iv_len - 427 ((psecpriv->sw_encrypt) ? 428 pattrib->icv_len : 0); 429 r8712_secmicappend(&micdata, payload, 430 length); 431 payload = payload + length + 432 pattrib->icv_len; 433 } 434 } 435 r8712_secgetmic(&micdata, &(mic[0])); 436 /* add mic code and add the mic code length in 437 * last_txcmdsz 438 */ 439 memcpy(payload, &(mic[0]), 8); 440 pattrib->last_txcmdsz += 8; 441 payload = payload - pattrib->last_txcmdsz + 8; 442 } 443 } 444 return 0; 445 } 446 447 static sint xmitframe_swencrypt(struct _adapter *padapter, 448 struct xmit_frame *pxmitframe) 449 { 450 struct pkt_attrib *pattrib = &pxmitframe->attrib; 451 452 if (pattrib->bswenc) { 453 switch (pattrib->encrypt) { 454 case _WEP40_: 455 case _WEP104_: 456 r8712_wep_encrypt(padapter, (u8 *)pxmitframe); 457 break; 458 case _TKIP_: 459 r8712_tkip_encrypt(padapter, (u8 *)pxmitframe); 460 break; 461 case _AES_: 462 r8712_aes_encrypt(padapter, (u8 *)pxmitframe); 463 break; 464 default: 465 break; 466 } 467 } 468 return _SUCCESS; 469 } 470 471 static int make_wlanhdr(struct _adapter *padapter, u8 *hdr, 472 struct pkt_attrib *pattrib) 473 { 474 u16 *qc; 475 476 struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr; 477 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 478 struct qos_priv *pqospriv = &pmlmepriv->qospriv; 479 __le16 *fctrl = &pwlanhdr->frame_control; 480 u8 *bssid; 481 482 memset(hdr, 0, WLANHDR_OFFSET); 483 SetFrameSubType(fctrl, pattrib->subtype); 484 if (!(pattrib->subtype & WIFI_DATA_TYPE)) 485 return 0; 486 487 bssid = get_bssid(pmlmepriv); 488 489 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) { 490 /* to_ds = 1, fr_ds = 0; */ 491 SetToDs(fctrl); 492 ether_addr_copy(pwlanhdr->addr1, bssid); 493 ether_addr_copy(pwlanhdr->addr2, pattrib->src); 494 ether_addr_copy(pwlanhdr->addr3, pattrib->dst); 495 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) { 496 /* to_ds = 0, fr_ds = 1; */ 497 SetFrDs(fctrl); 498 ether_addr_copy(pwlanhdr->addr1, pattrib->dst); 499 ether_addr_copy(pwlanhdr->addr2, bssid); 500 ether_addr_copy(pwlanhdr->addr3, pattrib->src); 501 } else if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) || 502 check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) { 503 ether_addr_copy(pwlanhdr->addr1, pattrib->dst); 504 ether_addr_copy(pwlanhdr->addr2, pattrib->src); 505 ether_addr_copy(pwlanhdr->addr3, bssid); 506 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) { 507 ether_addr_copy(pwlanhdr->addr1, pattrib->dst); 508 ether_addr_copy(pwlanhdr->addr2, pattrib->src); 509 ether_addr_copy(pwlanhdr->addr3, bssid); 510 } else { 511 return -EINVAL; 512 } 513 514 if (pattrib->encrypt) 515 SetPrivacy(fctrl); 516 if (pqospriv->qos_option) { 517 qc = (unsigned short *)(hdr + pattrib->hdrlen - 2); 518 if (pattrib->priority) 519 SetPriority(qc, pattrib->priority); 520 SetAckpolicy(qc, pattrib->ack_policy); 521 } 522 /* TODO: fill HT Control Field */ 523 /* Update Seq Num will be handled by f/w */ 524 { 525 struct sta_info *psta; 526 bool bmcst = is_multicast_ether_addr(pattrib->ra); 527 528 if (pattrib->psta) 529 psta = pattrib->psta; 530 else if (bmcst) 531 psta = r8712_get_bcmc_stainfo(padapter); 532 else 533 psta = r8712_get_stainfo(&padapter->stapriv, 534 pattrib->ra); 535 536 if (psta) { 537 u16 *txtid = psta->sta_xmitpriv.txseq_tid; 538 539 txtid[pattrib->priority]++; 540 txtid[pattrib->priority] &= 0xFFF; 541 pattrib->seqnum = txtid[pattrib->priority]; 542 SetSeqNum(hdr, pattrib->seqnum); 543 } 544 } 545 546 return 0; 547 } 548 549 static sint r8712_put_snap(u8 *data, u16 h_proto) 550 { 551 struct ieee80211_snap_hdr *snap; 552 const u8 *oui; 553 554 snap = (struct ieee80211_snap_hdr *)data; 555 snap->dsap = 0xaa; 556 snap->ssap = 0xaa; 557 snap->ctrl = 0x03; 558 if (h_proto == 0x8137 || h_proto == 0x80f3) 559 oui = P802_1H_OUI; 560 else 561 oui = RFC1042_OUI; 562 snap->oui[0] = oui[0]; 563 snap->oui[1] = oui[1]; 564 snap->oui[2] = oui[2]; 565 *(__be16 *)(data + SNAP_SIZE) = htons(h_proto); 566 return SNAP_SIZE + sizeof(u16); 567 } 568 569 /* 570 * This sub-routine will perform all the following: 571 * 1. remove 802.3 header. 572 * 2. create wlan_header, based on the info in pxmitframe 573 * 3. append sta's iv/ext-iv 574 * 4. append LLC 575 * 5. move frag chunk from pframe to pxmitframe->mem 576 * 6. apply sw-encrypt, if necessary. 577 */ 578 sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt, 579 struct xmit_frame *pxmitframe) 580 { 581 struct pkt_file pktfile; 582 583 sint frg_len, mpdu_len, llc_sz; 584 u32 mem_sz; 585 u8 frg_inx; 586 addr_t addr; 587 u8 *pframe, *mem_start, *ptxdesc; 588 struct sta_info *psta; 589 struct security_priv *psecpriv = &padapter->securitypriv; 590 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 591 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 592 struct pkt_attrib *pattrib = &pxmitframe->attrib; 593 u8 *pbuf_start; 594 bool bmcst = is_multicast_ether_addr(pattrib->ra); 595 596 if (pattrib->psta == NULL) 597 return _FAIL; 598 psta = pattrib->psta; 599 if (pxmitframe->buf_addr == NULL) 600 return _FAIL; 601 pbuf_start = pxmitframe->buf_addr; 602 ptxdesc = pbuf_start; 603 mem_start = pbuf_start + TXDESC_OFFSET; 604 if (make_wlanhdr(padapter, mem_start, pattrib)) 605 return _FAIL; 606 _r8712_open_pktfile(pkt, &pktfile); 607 _r8712_pktfile_read(&pktfile, NULL, (uint) pattrib->pkt_hdrlen); 608 if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) { 609 /* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */ 610 if (pattrib->ether_type == 0x8712) { 611 /* take care - update_txdesc overwrite this */ 612 _r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE); 613 } 614 } 615 pattrib->pktlen = pktfile.pkt_len; 616 frg_inx = 0; 617 frg_len = pxmitpriv->frag_len - 4; 618 while (1) { 619 llc_sz = 0; 620 mpdu_len = frg_len; 621 pframe = mem_start; 622 SetMFrag(mem_start); 623 pframe += pattrib->hdrlen; 624 mpdu_len -= pattrib->hdrlen; 625 /* adding icv, if necessary...*/ 626 if (pattrib->iv_len) { 627 if (psta != NULL) { 628 switch (pattrib->encrypt) { 629 case _WEP40_: 630 case _WEP104_: 631 WEP_IV(pattrib->iv, psta->txpn, 632 (u8)psecpriv->PrivacyKeyIndex); 633 break; 634 case _TKIP_: 635 if (bmcst) 636 TKIP_IV(pattrib->iv, 637 psta->txpn, 638 (u8)psecpriv->XGrpKeyid); 639 else 640 TKIP_IV(pattrib->iv, psta->txpn, 641 0); 642 break; 643 case _AES_: 644 if (bmcst) 645 AES_IV(pattrib->iv, psta->txpn, 646 (u8)psecpriv->XGrpKeyid); 647 else 648 AES_IV(pattrib->iv, psta->txpn, 649 0); 650 break; 651 } 652 } 653 memcpy(pframe, pattrib->iv, pattrib->iv_len); 654 pframe += pattrib->iv_len; 655 mpdu_len -= pattrib->iv_len; 656 } 657 if (frg_inx == 0) { 658 llc_sz = r8712_put_snap(pframe, pattrib->ether_type); 659 pframe += llc_sz; 660 mpdu_len -= llc_sz; 661 } 662 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) 663 mpdu_len -= pattrib->icv_len; 664 if (bmcst) 665 mem_sz = _r8712_pktfile_read(&pktfile, pframe, 666 pattrib->pktlen); 667 else 668 mem_sz = _r8712_pktfile_read(&pktfile, pframe, 669 mpdu_len); 670 pframe += mem_sz; 671 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) { 672 memcpy(pframe, pattrib->icv, pattrib->icv_len); 673 pframe += pattrib->icv_len; 674 } 675 frg_inx++; 676 if (bmcst || r8712_endofpktfile(&pktfile)) { 677 pattrib->nr_frags = frg_inx; 678 pattrib->last_txcmdsz = pattrib->hdrlen + 679 pattrib->iv_len + 680 ((pattrib->nr_frags == 1) ? 681 llc_sz : 0) + 682 ((pattrib->bswenc) ? 683 pattrib->icv_len : 0) + mem_sz; 684 ClearMFrag(mem_start); 685 break; 686 } 687 addr = (addr_t)(pframe); 688 mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET; 689 memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen); 690 } 691 692 if (xmitframe_addmic(padapter, pxmitframe)) 693 return _FAIL; 694 xmitframe_swencrypt(padapter, pxmitframe); 695 return _SUCCESS; 696 } 697 698 void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len) 699 { 700 uint protection; 701 u8 *perp; 702 uint erp_len; 703 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 704 struct registry_priv *pregistrypriv = &padapter->registrypriv; 705 706 switch (pxmitpriv->vcs_setting) { 707 case DISABLE_VCS: 708 pxmitpriv->vcs = NONE_VCS; 709 break; 710 case ENABLE_VCS: 711 break; 712 case AUTO_VCS: 713 default: 714 perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len); 715 if (perp == NULL) { 716 pxmitpriv->vcs = NONE_VCS; 717 } else { 718 protection = (*(perp + 2)) & BIT(1); 719 if (protection) { 720 if (pregistrypriv->vcs_type == RTS_CTS) 721 pxmitpriv->vcs = RTS_CTS; 722 else 723 pxmitpriv->vcs = CTS_TO_SELF; 724 } else { 725 pxmitpriv->vcs = NONE_VCS; 726 } 727 } 728 break; 729 } 730 } 731 732 struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv) 733 { 734 unsigned long irqL; 735 struct xmit_buf *pxmitbuf; 736 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue; 737 738 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL); 739 pxmitbuf = list_first_entry_or_null(&pfree_xmitbuf_queue->queue, 740 struct xmit_buf, list); 741 if (pxmitbuf) { 742 list_del_init(&pxmitbuf->list); 743 pxmitpriv->free_xmitbuf_cnt--; 744 } 745 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL); 746 return pxmitbuf; 747 } 748 749 void r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf) 750 { 751 unsigned long irqL; 752 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue; 753 754 if (pxmitbuf == NULL) 755 return; 756 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL); 757 list_del_init(&pxmitbuf->list); 758 list_add_tail(&(pxmitbuf->list), &pfree_xmitbuf_queue->queue); 759 pxmitpriv->free_xmitbuf_cnt++; 760 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL); 761 } 762 763 /* 764 * Calling context: 765 * 1. OS_TXENTRY 766 * 2. RXENTRY (rx_thread or RX_ISR/RX_CallBack) 767 * 768 * If we turn on USE_RXTHREAD, then, no need for critical section. 769 * Otherwise, we must use _enter/_exit critical to protect free_xmit_queue... 770 * 771 * Must be very very cautious... 772 * 773 */ 774 struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv) 775 { 776 /* 777 * Please remember to use all the osdep_service api, 778 * and lock/unlock or _enter/_exit critical to protect 779 * pfree_xmit_queue 780 */ 781 unsigned long irqL; 782 struct xmit_frame *pxframe; 783 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue; 784 785 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL); 786 pxframe = list_first_entry_or_null(&pfree_xmit_queue->queue, 787 struct xmit_frame, list); 788 if (pxframe) { 789 list_del_init(&pxframe->list); 790 pxmitpriv->free_xmitframe_cnt--; 791 pxframe->buf_addr = NULL; 792 pxframe->pxmitbuf = NULL; 793 pxframe->attrib.psta = NULL; 794 pxframe->pkt = NULL; 795 } 796 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL); 797 return pxframe; 798 } 799 800 void r8712_free_xmitframe(struct xmit_priv *pxmitpriv, 801 struct xmit_frame *pxmitframe) 802 { 803 unsigned long irqL; 804 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue; 805 struct _adapter *padapter = pxmitpriv->adapter; 806 807 if (pxmitframe == NULL) 808 return; 809 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL); 810 list_del_init(&pxmitframe->list); 811 if (pxmitframe->pkt) 812 pxmitframe->pkt = NULL; 813 list_add_tail(&pxmitframe->list, &pfree_xmit_queue->queue); 814 pxmitpriv->free_xmitframe_cnt++; 815 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL); 816 if (netif_queue_stopped(padapter->pnetdev)) 817 netif_wake_queue(padapter->pnetdev); 818 } 819 820 void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv, 821 struct xmit_frame *pxmitframe) 822 { 823 if (pxmitframe == NULL) 824 return; 825 if (pxmitframe->frame_tag == DATA_FRAMETAG) 826 r8712_free_xmitframe(pxmitpriv, pxmitframe); 827 } 828 829 void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv, 830 struct __queue *pframequeue) 831 { 832 unsigned long irqL; 833 struct list_head *plist, *phead; 834 struct xmit_frame *pxmitframe; 835 836 spin_lock_irqsave(&(pframequeue->lock), irqL); 837 phead = &pframequeue->queue; 838 plist = phead->next; 839 while (!end_of_queue_search(phead, plist)) { 840 pxmitframe = container_of(plist, struct xmit_frame, list); 841 plist = plist->next; 842 r8712_free_xmitframe(pxmitpriv, pxmitframe); 843 } 844 spin_unlock_irqrestore(&(pframequeue->lock), irqL); 845 } 846 847 static inline struct tx_servq *get_sta_pending(struct _adapter *padapter, 848 struct __queue **ppstapending, 849 struct sta_info *psta, sint up) 850 { 851 852 struct tx_servq *ptxservq; 853 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits; 854 855 switch (up) { 856 case 1: 857 case 2: 858 ptxservq = &(psta->sta_xmitpriv.bk_q); 859 *ppstapending = &padapter->xmitpriv.bk_pending; 860 (phwxmits + 3)->accnt++; 861 break; 862 case 4: 863 case 5: 864 ptxservq = &(psta->sta_xmitpriv.vi_q); 865 *ppstapending = &padapter->xmitpriv.vi_pending; 866 (phwxmits + 1)->accnt++; 867 break; 868 case 6: 869 case 7: 870 ptxservq = &(psta->sta_xmitpriv.vo_q); 871 *ppstapending = &padapter->xmitpriv.vo_pending; 872 (phwxmits + 0)->accnt++; 873 break; 874 case 0: 875 case 3: 876 default: 877 ptxservq = &(psta->sta_xmitpriv.be_q); 878 *ppstapending = &padapter->xmitpriv.be_pending; 879 (phwxmits + 2)->accnt++; 880 break; 881 } 882 return ptxservq; 883 } 884 885 /* 886 * Will enqueue pxmitframe to the proper queue, and indicate it 887 * to xx_pending list..... 888 */ 889 int r8712_xmit_classifier(struct _adapter *padapter, 890 struct xmit_frame *pxmitframe) 891 { 892 unsigned long irqL0; 893 struct __queue *pstapending; 894 struct sta_info *psta; 895 struct tx_servq *ptxservq; 896 struct pkt_attrib *pattrib = &pxmitframe->attrib; 897 struct sta_priv *pstapriv = &padapter->stapriv; 898 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 899 bool bmcst = is_multicast_ether_addr(pattrib->ra); 900 901 if (pattrib->psta) { 902 psta = pattrib->psta; 903 } else { 904 if (bmcst) { 905 psta = r8712_get_bcmc_stainfo(padapter); 906 } else { 907 if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) 908 psta = r8712_get_stainfo(pstapriv, 909 get_bssid(pmlmepriv)); 910 else 911 psta = r8712_get_stainfo(pstapriv, pattrib->ra); 912 } 913 } 914 if (psta == NULL) 915 return -EINVAL; 916 ptxservq = get_sta_pending(padapter, &pstapending, 917 psta, pattrib->priority); 918 spin_lock_irqsave(&pstapending->lock, irqL0); 919 if (list_empty(&ptxservq->tx_pending)) 920 list_add_tail(&ptxservq->tx_pending, &pstapending->queue); 921 list_add_tail(&pxmitframe->list, &ptxservq->sta_pending.queue); 922 ptxservq->qcnt++; 923 spin_unlock_irqrestore(&pstapending->lock, irqL0); 924 return 0; 925 } 926 927 static void alloc_hwxmits(struct _adapter *padapter) 928 { 929 struct hw_xmit *hwxmits; 930 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 931 932 pxmitpriv->hwxmit_entry = HWXMIT_ENTRY; 933 pxmitpriv->hwxmits = kmalloc_array(pxmitpriv->hwxmit_entry, 934 sizeof(struct hw_xmit), GFP_ATOMIC); 935 if (!pxmitpriv->hwxmits) 936 return; 937 hwxmits = pxmitpriv->hwxmits; 938 if (pxmitpriv->hwxmit_entry == 5) { 939 pxmitpriv->bmc_txqueue.head = 0; 940 hwxmits[0] .phwtxqueue = &pxmitpriv->bmc_txqueue; 941 hwxmits[0] .sta_queue = &pxmitpriv->bm_pending; 942 pxmitpriv->vo_txqueue.head = 0; 943 hwxmits[1] .phwtxqueue = &pxmitpriv->vo_txqueue; 944 hwxmits[1] .sta_queue = &pxmitpriv->vo_pending; 945 pxmitpriv->vi_txqueue.head = 0; 946 hwxmits[2] .phwtxqueue = &pxmitpriv->vi_txqueue; 947 hwxmits[2] .sta_queue = &pxmitpriv->vi_pending; 948 pxmitpriv->bk_txqueue.head = 0; 949 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue; 950 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending; 951 pxmitpriv->be_txqueue.head = 0; 952 hwxmits[4] .phwtxqueue = &pxmitpriv->be_txqueue; 953 hwxmits[4] .sta_queue = &pxmitpriv->be_pending; 954 } else if (pxmitpriv->hwxmit_entry == 4) { 955 pxmitpriv->vo_txqueue.head = 0; 956 hwxmits[0] .phwtxqueue = &pxmitpriv->vo_txqueue; 957 hwxmits[0] .sta_queue = &pxmitpriv->vo_pending; 958 pxmitpriv->vi_txqueue.head = 0; 959 hwxmits[1] .phwtxqueue = &pxmitpriv->vi_txqueue; 960 hwxmits[1] .sta_queue = &pxmitpriv->vi_pending; 961 pxmitpriv->be_txqueue.head = 0; 962 hwxmits[2] .phwtxqueue = &pxmitpriv->be_txqueue; 963 hwxmits[2] .sta_queue = &pxmitpriv->be_pending; 964 pxmitpriv->bk_txqueue.head = 0; 965 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue; 966 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending; 967 } 968 } 969 970 static void free_hwxmits(struct _adapter *padapter) 971 { 972 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 973 974 kfree(pxmitpriv->hwxmits); 975 } 976 977 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry) 978 { 979 sint i; 980 981 for (i = 0; i < entry; i++, phwxmit++) { 982 spin_lock_init(&phwxmit->xmit_lock); 983 INIT_LIST_HEAD(&phwxmit->pending); 984 phwxmit->txcmdcnt = 0; 985 phwxmit->accnt = 0; 986 } 987 } 988 989 void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe, 990 struct xmit_buf *pxmitbuf) 991 { 992 /* pxmitbuf attach to pxmitframe */ 993 pxmitframe->pxmitbuf = pxmitbuf; 994 /* urb and irp connection */ 995 pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0]; 996 /* buffer addr assoc */ 997 pxmitframe->buf_addr = pxmitbuf->pbuf; 998 /* pxmitframe attach to pxmitbuf */ 999 pxmitbuf->priv_data = pxmitframe; 1000 } 1001 1002 /* 1003 * tx_action == 0 == no frames to transmit 1004 * tx_action > 0 ==> we have frames to transmit 1005 * tx_action < 0 ==> we have frames to transmit, but TXFF is not even enough 1006 * to transmit 1 frame. 1007 */ 1008 1009 int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe) 1010 { 1011 unsigned long irqL; 1012 int ret; 1013 struct xmit_buf *pxmitbuf = NULL; 1014 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 1015 struct pkt_attrib *pattrib = &pxmitframe->attrib; 1016 1017 r8712_do_queue_select(padapter, pattrib); 1018 spin_lock_irqsave(&pxmitpriv->lock, irqL); 1019 if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) { 1020 ret = false; 1021 r8712_xmit_enqueue(padapter, pxmitframe); 1022 spin_unlock_irqrestore(&pxmitpriv->lock, irqL); 1023 return ret; 1024 } 1025 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv); 1026 if (pxmitbuf == NULL) { /*enqueue packet*/ 1027 ret = false; 1028 r8712_xmit_enqueue(padapter, pxmitframe); 1029 spin_unlock_irqrestore(&pxmitpriv->lock, irqL); 1030 } else { /*dump packet directly*/ 1031 spin_unlock_irqrestore(&pxmitpriv->lock, irqL); 1032 ret = true; 1033 xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf); 1034 r8712_xmit_direct(padapter, pxmitframe); 1035 } 1036 return ret; 1037 } 1038