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 the 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, GFP_ATOMIC); 80 if (!pxmitpriv->pallocated_frame_buf) { 81 pxmitpriv->pxmit_frame_buf = NULL; 82 return -ENOMEM; 83 } 84 pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 - 85 ((addr_t) (pxmitpriv->pallocated_frame_buf) & 3); 86 pxframe = (struct xmit_frame *) pxmitpriv->pxmit_frame_buf; 87 for (i = 0; i < NR_XMITFRAME; i++) { 88 INIT_LIST_HEAD(&(pxframe->list)); 89 pxframe->padapter = padapter; 90 pxframe->frame_tag = DATA_FRAMETAG; 91 pxframe->pkt = NULL; 92 pxframe->buf_addr = NULL; 93 pxframe->pxmitbuf = NULL; 94 list_add_tail(&(pxframe->list), 95 &(pxmitpriv->free_xmit_queue.queue)); 96 pxframe++; 97 } 98 pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME; 99 /* 100 * init xmit hw_txqueue 101 */ 102 _r8712_init_hw_txqueue(&pxmitpriv->be_txqueue, BE_QUEUE_INX); 103 _r8712_init_hw_txqueue(&pxmitpriv->bk_txqueue, BK_QUEUE_INX); 104 _r8712_init_hw_txqueue(&pxmitpriv->vi_txqueue, VI_QUEUE_INX); 105 _r8712_init_hw_txqueue(&pxmitpriv->vo_txqueue, VO_QUEUE_INX); 106 _r8712_init_hw_txqueue(&pxmitpriv->bmc_txqueue, BMC_QUEUE_INX); 107 pxmitpriv->frag_len = MAX_FRAG_THRESHOLD; 108 pxmitpriv->txirp_cnt = 1; 109 /*per AC pending irp*/ 110 pxmitpriv->beq_cnt = 0; 111 pxmitpriv->bkq_cnt = 0; 112 pxmitpriv->viq_cnt = 0; 113 pxmitpriv->voq_cnt = 0; 114 /*init xmit_buf*/ 115 _init_queue(&pxmitpriv->free_xmitbuf_queue); 116 _init_queue(&pxmitpriv->pending_xmitbuf_queue); 117 pxmitpriv->pallocated_xmitbuf = 118 kmalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4, GFP_ATOMIC); 119 if (!pxmitpriv->pallocated_xmitbuf) { 120 kfree(pxmitpriv->pallocated_frame_buf); 121 pxmitpriv->pallocated_frame_buf = NULL; 122 return -ENOMEM; 123 } 124 pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 - 125 ((addr_t)(pxmitpriv->pallocated_xmitbuf) & 3); 126 pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf; 127 for (i = 0; i < NR_XMITBUFF; i++) { 128 INIT_LIST_HEAD(&pxmitbuf->list); 129 pxmitbuf->pallocated_buf = kmalloc(MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ, 130 GFP_ATOMIC); 131 if (!pxmitbuf->pallocated_buf) 132 return -ENOMEM; 133 pxmitbuf->pbuf = pxmitbuf->pallocated_buf + XMITBUF_ALIGN_SZ - 134 ((addr_t) (pxmitbuf->pallocated_buf) & 135 (XMITBUF_ALIGN_SZ - 1)); 136 if (r8712_xmit_resource_alloc(padapter, pxmitbuf)) 137 return -ENOMEM; 138 list_add_tail(&pxmitbuf->list, 139 &(pxmitpriv->free_xmitbuf_queue.queue)); 140 pxmitbuf++; 141 } 142 pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF; 143 INIT_WORK(&padapter->wk_filter_rx_ff0, r8712_SetFilter); 144 alloc_hwxmits(padapter); 145 init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry); 146 tasklet_init(&pxmitpriv->xmit_tasklet, r8712_xmit_bh, 147 (unsigned long)padapter); 148 return 0; 149 } 150 151 void _free_xmit_priv(struct xmit_priv *pxmitpriv) 152 { 153 int i; 154 struct _adapter *padapter = pxmitpriv->adapter; 155 struct xmit_frame *pxmitframe = (struct xmit_frame *) 156 pxmitpriv->pxmit_frame_buf; 157 struct xmit_buf *pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf; 158 159 if (pxmitpriv->pxmit_frame_buf == NULL) 160 return; 161 for (i = 0; i < NR_XMITFRAME; i++) { 162 r8712_xmit_complete(padapter, pxmitframe); 163 pxmitframe++; 164 } 165 for (i = 0; i < NR_XMITBUFF; i++) { 166 r8712_xmit_resource_free(padapter, pxmitbuf); 167 kfree(pxmitbuf->pallocated_buf); 168 pxmitbuf++; 169 } 170 kfree(pxmitpriv->pallocated_frame_buf); 171 kfree(pxmitpriv->pallocated_xmitbuf); 172 free_hwxmits(padapter); 173 } 174 175 int r8712_update_attrib(struct _adapter *padapter, _pkt *pkt, 176 struct pkt_attrib *pattrib) 177 { 178 struct pkt_file pktfile; 179 struct sta_info *psta = NULL; 180 struct ethhdr etherhdr; 181 182 struct tx_cmd txdesc; 183 184 bool bmcast; 185 struct sta_priv *pstapriv = &padapter->stapriv; 186 struct security_priv *psecuritypriv = &padapter->securitypriv; 187 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 188 struct qos_priv *pqospriv = &pmlmepriv->qospriv; 189 190 _r8712_open_pktfile(pkt, &pktfile); 191 192 _r8712_pktfile_read(&pktfile, (unsigned char *)ðerhdr, ETH_HLEN); 193 194 pattrib->ether_type = ntohs(etherhdr.h_proto); 195 196 /* 197 * If driver xmit ARP packet, driver can set ps mode to initial 198 * setting. It stands for getting DHCP or fix IP. 199 */ 200 if (pattrib->ether_type == 0x0806) { 201 if (padapter->pwrctrlpriv.pwr_mode != 202 padapter->registrypriv.power_mgnt) { 203 del_timer_sync(&pmlmepriv->dhcp_timer); 204 r8712_set_ps_mode(padapter, 205 padapter->registrypriv.power_mgnt, 206 padapter->registrypriv.smart_ps); 207 } 208 } 209 210 memcpy(pattrib->dst, ðerhdr.h_dest, ETH_ALEN); 211 memcpy(pattrib->src, ðerhdr.h_source, ETH_ALEN); 212 pattrib->pctrl = 0; 213 if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) || 214 check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE)) { 215 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 216 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 217 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) { 218 memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN); 219 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 220 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) { 221 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 222 memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN); 223 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) { 224 /*firstly, filter packet not belongs to mp*/ 225 if (pattrib->ether_type != 0x8712) 226 return -EINVAL; 227 /* for mp storing the txcmd per packet, 228 * according to the info of txcmd to update pattrib 229 */ 230 /*get MP_TXDESC_SIZE bytes txcmd per packet*/ 231 _r8712_pktfile_read(&pktfile, (u8 *)&txdesc, TXDESC_SIZE); 232 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 233 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 234 pattrib->pctrl = 1; 235 } 236 /* r8712_xmitframe_coalesce() overwrite this!*/ 237 pattrib->pktlen = pktfile.pkt_len; 238 if (pattrib->ether_type == ETH_P_IP) { 239 /* The following is for DHCP and ARP packet, we use cck1M to 240 * tx these packets and let LPS awake some time 241 * to prevent DHCP protocol fail 242 */ 243 u8 tmp[24]; 244 245 _r8712_pktfile_read(&pktfile, &tmp[0], 24); 246 pattrib->dhcp_pkt = 0; 247 if (pktfile.pkt_len > 282) {/*MINIMUM_DHCP_PACKET_SIZE)*/ 248 if (pattrib->ether_type == ETH_P_IP) {/* IP header*/ 249 if (((tmp[21] == 68) && (tmp[23] == 67)) || 250 ((tmp[21] == 67) && (tmp[23] == 68))) { 251 /* 68 : UDP BOOTP client 252 * 67 : UDP BOOTP server 253 * Use low rate to send DHCP packet. 254 */ 255 pattrib->dhcp_pkt = 1; 256 } 257 } 258 } 259 } 260 bmcast = is_multicast_ether_addr(pattrib->ra); 261 /* get sta_info*/ 262 if (bmcast) { 263 psta = r8712_get_bcmc_stainfo(padapter); 264 pattrib->mac_id = 4; 265 } else { 266 if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) { 267 psta = r8712_get_stainfo(pstapriv, 268 get_bssid(pmlmepriv)); 269 pattrib->mac_id = 5; 270 } else { 271 psta = r8712_get_stainfo(pstapriv, pattrib->ra); 272 if (psta == NULL) /* drop the pkt */ 273 return -ENOMEM; 274 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) 275 pattrib->mac_id = 5; 276 else 277 pattrib->mac_id = psta->mac_id; 278 } 279 } 280 281 if (psta) { 282 pattrib->psta = psta; 283 } else { 284 /* if we cannot get psta => drrp the pkt */ 285 return -ENOMEM; 286 } 287 288 pattrib->ack_policy = 0; 289 /* get ether_hdr_len */ 290 pattrib->pkt_hdrlen = ETH_HLEN; 291 292 if (pqospriv->qos_option) { 293 r8712_set_qos(&pktfile, pattrib); 294 } else { 295 pattrib->hdrlen = WLAN_HDR_A3_LEN; 296 pattrib->subtype = WIFI_DATA_TYPE; 297 pattrib->priority = 0; 298 } 299 if (psta->ieee8021x_blocked) { 300 pattrib->encrypt = 0; 301 if ((pattrib->ether_type != 0x888e) && 302 !check_fwstate(pmlmepriv, WIFI_MP_STATE)) 303 return -EINVAL; 304 } else { 305 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast); 306 } 307 switch (pattrib->encrypt) { 308 case _WEP40_: 309 case _WEP104_: 310 pattrib->iv_len = 4; 311 pattrib->icv_len = 4; 312 break; 313 case _TKIP_: 314 pattrib->iv_len = 8; 315 pattrib->icv_len = 4; 316 if (padapter->securitypriv.busetkipkey == _FAIL) 317 return -EINVAL; 318 break; 319 case _AES_: 320 pattrib->iv_len = 8; 321 pattrib->icv_len = 8; 322 break; 323 default: 324 pattrib->iv_len = 0; 325 pattrib->icv_len = 0; 326 break; 327 } 328 329 if (pattrib->encrypt && 330 (padapter->securitypriv.sw_encrypt || 331 !psecuritypriv->hw_decrypted)) 332 pattrib->bswenc = true; 333 else 334 pattrib->bswenc = false; 335 /* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite 336 * some settings above. 337 */ 338 if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) 339 pattrib->priority = 340 (le32_to_cpu(txdesc.txdw1) >> QSEL_SHT) & 0x1f; 341 return 0; 342 } 343 344 static int xmitframe_addmic(struct _adapter *padapter, 345 struct xmit_frame *pxmitframe) 346 { 347 u32 curfragnum, length; 348 u8 *pframe, *payload, mic[8]; 349 struct mic_data micdata; 350 struct sta_info *stainfo; 351 struct qos_priv *pqospriv = &(padapter->mlmepriv.qospriv); 352 struct pkt_attrib *pattrib = &pxmitframe->attrib; 353 struct security_priv *psecuritypriv = &padapter->securitypriv; 354 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 355 u8 priority[4] = {0x0, 0x0, 0x0, 0x0}; 356 bool bmcst = is_multicast_ether_addr(pattrib->ra); 357 358 if (pattrib->psta) 359 stainfo = pattrib->psta; 360 else 361 stainfo = r8712_get_stainfo(&padapter->stapriv, 362 &pattrib->ra[0]); 363 if (pattrib->encrypt == _TKIP_) { 364 /*encode mic code*/ 365 if (stainfo != NULL) { 366 u8 null_key[16] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 367 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 368 0x0, 0x0}; 369 pframe = pxmitframe->buf_addr + TXDESC_OFFSET; 370 if (bmcst) { 371 if (!memcmp(psecuritypriv->XGrptxmickey 372 [psecuritypriv->XGrpKeyid].skey, 373 null_key, 16)) 374 return -ENOMEM; 375 /*start to calculate the mic code*/ 376 r8712_secmicsetkey(&micdata, 377 psecuritypriv-> 378 XGrptxmickey[psecuritypriv-> 379 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 ((psecuritypriv->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 ((psecuritypriv->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_ctl; 480 481 memset(hdr, 0, WLANHDR_OFFSET); 482 SetFrameSubType(fctrl, pattrib->subtype); 483 if (pattrib->subtype & WIFI_DATA_TYPE) { 484 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) { 485 /* to_ds = 1, fr_ds = 0; */ 486 SetToDs(fctrl); 487 memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv), 488 ETH_ALEN); 489 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN); 490 memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN); 491 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) { 492 /* to_ds = 0, fr_ds = 1; */ 493 SetFrDs(fctrl); 494 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN); 495 memcpy(pwlanhdr->addr2, get_bssid(pmlmepriv), 496 ETH_ALEN); 497 memcpy(pwlanhdr->addr3, pattrib->src, ETH_ALEN); 498 } else if (check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) || 499 check_fwstate(pmlmepriv, 500 WIFI_ADHOC_MASTER_STATE)) { 501 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN); 502 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN); 503 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv), 504 ETH_ALEN); 505 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) { 506 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN); 507 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN); 508 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv), 509 ETH_ALEN); 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 { 531 if (bmcst) 532 psta = r8712_get_bcmc_stainfo(padapter); 533 else 534 psta = 535 r8712_get_stainfo(&padapter->stapriv, 536 pattrib->ra); 537 } 538 if (psta) { 539 psta->sta_xmitpriv.txseq_tid 540 [pattrib->priority]++; 541 psta->sta_xmitpriv.txseq_tid[pattrib->priority] 542 &= 0xFFF; 543 pattrib->seqnum = psta->sta_xmitpriv. 544 txseq_tid[pattrib->priority]; 545 SetSeqNum(hdr, pattrib->seqnum); 546 } 547 } 548 } 549 return 0; 550 } 551 552 static sint r8712_put_snap(u8 *data, u16 h_proto) 553 { 554 struct ieee80211_snap_hdr *snap; 555 const u8 *oui; 556 557 snap = (struct ieee80211_snap_hdr *)data; 558 snap->dsap = 0xaa; 559 snap->ssap = 0xaa; 560 snap->ctrl = 0x03; 561 if (h_proto == 0x8137 || h_proto == 0x80f3) 562 oui = P802_1H_OUI; 563 else 564 oui = RFC1042_OUI; 565 snap->oui[0] = oui[0]; 566 snap->oui[1] = oui[1]; 567 snap->oui[2] = oui[2]; 568 *(__be16 *)(data + SNAP_SIZE) = htons(h_proto); 569 return SNAP_SIZE + sizeof(u16); 570 } 571 572 /* 573 * This sub-routine will perform all the following: 574 * 1. remove 802.3 header. 575 * 2. create wlan_header, based on the info in pxmitframe 576 * 3. append sta's iv/ext-iv 577 * 4. append LLC 578 * 5. move frag chunk from pframe to pxmitframe->mem 579 * 6. apply sw-encrypt, if necessary. 580 */ 581 sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt, 582 struct xmit_frame *pxmitframe) 583 { 584 struct pkt_file pktfile; 585 586 sint frg_len, mpdu_len, llc_sz; 587 u32 mem_sz; 588 u8 frg_inx; 589 addr_t addr; 590 u8 *pframe, *mem_start, *ptxdesc; 591 struct sta_info *psta; 592 struct security_priv *psecuritypriv = &padapter->securitypriv; 593 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 594 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 595 struct pkt_attrib *pattrib = &pxmitframe->attrib; 596 u8 *pbuf_start; 597 bool bmcst = is_multicast_ether_addr(pattrib->ra); 598 599 if (pattrib->psta == NULL) 600 return _FAIL; 601 psta = pattrib->psta; 602 if (pxmitframe->buf_addr == NULL) 603 return _FAIL; 604 pbuf_start = pxmitframe->buf_addr; 605 ptxdesc = pbuf_start; 606 mem_start = pbuf_start + TXDESC_OFFSET; 607 if (make_wlanhdr(padapter, mem_start, pattrib)) 608 return _FAIL; 609 _r8712_open_pktfile(pkt, &pktfile); 610 _r8712_pktfile_read(&pktfile, NULL, (uint) pattrib->pkt_hdrlen); 611 if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) { 612 /* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */ 613 if (pattrib->ether_type == 0x8712) { 614 /* take care - update_txdesc overwrite this */ 615 _r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE); 616 } 617 } 618 pattrib->pktlen = pktfile.pkt_len; 619 frg_inx = 0; 620 frg_len = pxmitpriv->frag_len - 4; 621 while (1) { 622 llc_sz = 0; 623 mpdu_len = frg_len; 624 pframe = mem_start; 625 SetMFrag(mem_start); 626 pframe += pattrib->hdrlen; 627 mpdu_len -= pattrib->hdrlen; 628 /* adding icv, if necessary...*/ 629 if (pattrib->iv_len) { 630 if (psta != NULL) { 631 switch (pattrib->encrypt) { 632 case _WEP40_: 633 case _WEP104_: 634 WEP_IV(pattrib->iv, psta->txpn, 635 (u8)psecuritypriv-> 636 PrivacyKeyIndex); 637 break; 638 case _TKIP_: 639 if (bmcst) 640 TKIP_IV(pattrib->iv, 641 psta->txpn, 642 (u8)psecuritypriv-> 643 XGrpKeyid); 644 else 645 TKIP_IV(pattrib->iv, psta->txpn, 646 0); 647 break; 648 case _AES_: 649 if (bmcst) 650 AES_IV(pattrib->iv, psta->txpn, 651 (u8)psecuritypriv-> 652 XGrpKeyid); 653 else 654 AES_IV(pattrib->iv, psta->txpn, 655 0); 656 break; 657 } 658 } 659 memcpy(pframe, pattrib->iv, pattrib->iv_len); 660 pframe += pattrib->iv_len; 661 mpdu_len -= pattrib->iv_len; 662 } 663 if (frg_inx == 0) { 664 llc_sz = r8712_put_snap(pframe, pattrib->ether_type); 665 pframe += llc_sz; 666 mpdu_len -= llc_sz; 667 } 668 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) 669 mpdu_len -= pattrib->icv_len; 670 if (bmcst) 671 mem_sz = _r8712_pktfile_read(&pktfile, pframe, 672 pattrib->pktlen); 673 else 674 mem_sz = _r8712_pktfile_read(&pktfile, pframe, 675 mpdu_len); 676 pframe += mem_sz; 677 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) { 678 memcpy(pframe, pattrib->icv, pattrib->icv_len); 679 pframe += pattrib->icv_len; 680 } 681 frg_inx++; 682 if (bmcst || r8712_endofpktfile(&pktfile)) { 683 pattrib->nr_frags = frg_inx; 684 pattrib->last_txcmdsz = pattrib->hdrlen + 685 pattrib->iv_len + 686 ((pattrib->nr_frags == 1) ? 687 llc_sz : 0) + 688 ((pattrib->bswenc) ? 689 pattrib->icv_len : 0) + mem_sz; 690 ClearMFrag(mem_start); 691 break; 692 } 693 addr = (addr_t)(pframe); 694 mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET; 695 memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen); 696 } 697 698 if (xmitframe_addmic(padapter, pxmitframe)) 699 return _FAIL; 700 xmitframe_swencrypt(padapter, pxmitframe); 701 return _SUCCESS; 702 } 703 704 void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len) 705 { 706 uint protection; 707 u8 *perp; 708 uint erp_len; 709 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 710 struct registry_priv *pregistrypriv = &padapter->registrypriv; 711 712 switch (pxmitpriv->vcs_setting) { 713 case DISABLE_VCS: 714 pxmitpriv->vcs = NONE_VCS; 715 break; 716 case ENABLE_VCS: 717 break; 718 case AUTO_VCS: 719 default: 720 perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len); 721 if (perp == NULL) { 722 pxmitpriv->vcs = NONE_VCS; 723 } else { 724 protection = (*(perp + 2)) & BIT(1); 725 if (protection) { 726 if (pregistrypriv->vcs_type == RTS_CTS) 727 pxmitpriv->vcs = RTS_CTS; 728 else 729 pxmitpriv->vcs = CTS_TO_SELF; 730 } else { 731 pxmitpriv->vcs = NONE_VCS; 732 } 733 } 734 break; 735 } 736 } 737 738 struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv) 739 { 740 unsigned long irqL; 741 struct xmit_buf *pxmitbuf; 742 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue; 743 744 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL); 745 pxmitbuf = list_first_entry_or_null(&pfree_xmitbuf_queue->queue, 746 struct xmit_buf, list); 747 if (pxmitbuf) { 748 list_del_init(&pxmitbuf->list); 749 pxmitpriv->free_xmitbuf_cnt--; 750 } 751 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL); 752 return pxmitbuf; 753 } 754 755 void r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf) 756 { 757 unsigned long irqL; 758 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue; 759 760 if (pxmitbuf == NULL) 761 return; 762 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL); 763 list_del_init(&pxmitbuf->list); 764 list_add_tail(&(pxmitbuf->list), &pfree_xmitbuf_queue->queue); 765 pxmitpriv->free_xmitbuf_cnt++; 766 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL); 767 } 768 769 /* 770 * Calling context: 771 * 1. OS_TXENTRY 772 * 2. RXENTRY (rx_thread or RX_ISR/RX_CallBack) 773 * 774 * If we turn on USE_RXTHREAD, then, no need for critical section. 775 * Otherwise, we must use _enter/_exit critical to protect free_xmit_queue... 776 * 777 * Must be very very cautious... 778 * 779 */ 780 struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv) 781 { 782 /* 783 * Please remember to use all the osdep_service api, 784 * and lock/unlock or _enter/_exit critical to protect 785 * pfree_xmit_queue 786 */ 787 unsigned long irqL; 788 struct xmit_frame *pxframe; 789 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue; 790 791 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL); 792 pxframe = list_first_entry_or_null(&pfree_xmit_queue->queue, 793 struct xmit_frame, list); 794 if (pxframe) { 795 list_del_init(&pxframe->list); 796 pxmitpriv->free_xmitframe_cnt--; 797 pxframe->buf_addr = NULL; 798 pxframe->pxmitbuf = NULL; 799 pxframe->attrib.psta = NULL; 800 pxframe->pkt = NULL; 801 } 802 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL); 803 return pxframe; 804 } 805 806 void r8712_free_xmitframe(struct xmit_priv *pxmitpriv, 807 struct xmit_frame *pxmitframe) 808 { 809 unsigned long irqL; 810 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue; 811 struct _adapter *padapter = pxmitpriv->adapter; 812 813 if (pxmitframe == NULL) 814 return; 815 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL); 816 list_del_init(&pxmitframe->list); 817 if (pxmitframe->pkt) 818 pxmitframe->pkt = NULL; 819 list_add_tail(&pxmitframe->list, &pfree_xmit_queue->queue); 820 pxmitpriv->free_xmitframe_cnt++; 821 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL); 822 if (netif_queue_stopped(padapter->pnetdev)) 823 netif_wake_queue(padapter->pnetdev); 824 } 825 826 void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv, 827 struct xmit_frame *pxmitframe) 828 { 829 if (pxmitframe == NULL) 830 return; 831 if (pxmitframe->frame_tag == DATA_FRAMETAG) 832 r8712_free_xmitframe(pxmitpriv, pxmitframe); 833 } 834 835 void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv, 836 struct __queue *pframequeue) 837 { 838 unsigned long irqL; 839 struct list_head *plist, *phead; 840 struct xmit_frame *pxmitframe; 841 842 spin_lock_irqsave(&(pframequeue->lock), irqL); 843 phead = &pframequeue->queue; 844 plist = phead->next; 845 while (!end_of_queue_search(phead, plist)) { 846 pxmitframe = container_of(plist, struct xmit_frame, list); 847 plist = plist->next; 848 r8712_free_xmitframe(pxmitpriv, pxmitframe); 849 } 850 spin_unlock_irqrestore(&(pframequeue->lock), irqL); 851 } 852 853 static inline struct tx_servq *get_sta_pending(struct _adapter *padapter, 854 struct __queue **ppstapending, 855 struct sta_info *psta, sint up) 856 { 857 858 struct tx_servq *ptxservq; 859 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits; 860 861 switch (up) { 862 case 1: 863 case 2: 864 ptxservq = &(psta->sta_xmitpriv.bk_q); 865 *ppstapending = &padapter->xmitpriv.bk_pending; 866 (phwxmits + 3)->accnt++; 867 break; 868 case 4: 869 case 5: 870 ptxservq = &(psta->sta_xmitpriv.vi_q); 871 *ppstapending = &padapter->xmitpriv.vi_pending; 872 (phwxmits + 1)->accnt++; 873 break; 874 case 6: 875 case 7: 876 ptxservq = &(psta->sta_xmitpriv.vo_q); 877 *ppstapending = &padapter->xmitpriv.vo_pending; 878 (phwxmits + 0)->accnt++; 879 break; 880 case 0: 881 case 3: 882 default: 883 ptxservq = &(psta->sta_xmitpriv.be_q); 884 *ppstapending = &padapter->xmitpriv.be_pending; 885 (phwxmits + 2)->accnt++; 886 break; 887 } 888 return ptxservq; 889 } 890 891 /* 892 * Will enqueue pxmitframe to the proper queue, and indicate it 893 * to xx_pending list..... 894 */ 895 int r8712_xmit_classifier(struct _adapter *padapter, 896 struct xmit_frame *pxmitframe) 897 { 898 unsigned long irqL0; 899 struct __queue *pstapending; 900 struct sta_info *psta; 901 struct tx_servq *ptxservq; 902 struct pkt_attrib *pattrib = &pxmitframe->attrib; 903 struct sta_priv *pstapriv = &padapter->stapriv; 904 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 905 bool bmcst = is_multicast_ether_addr(pattrib->ra); 906 907 if (pattrib->psta) { 908 psta = pattrib->psta; 909 } else { 910 if (bmcst) { 911 psta = r8712_get_bcmc_stainfo(padapter); 912 } else { 913 if (check_fwstate(pmlmepriv, WIFI_MP_STATE)) 914 psta = r8712_get_stainfo(pstapriv, 915 get_bssid(pmlmepriv)); 916 else 917 psta = r8712_get_stainfo(pstapriv, pattrib->ra); 918 } 919 } 920 if (psta == NULL) 921 return -EINVAL; 922 ptxservq = get_sta_pending(padapter, &pstapending, 923 psta, pattrib->priority); 924 spin_lock_irqsave(&pstapending->lock, irqL0); 925 if (list_empty(&ptxservq->tx_pending)) 926 list_add_tail(&ptxservq->tx_pending, &pstapending->queue); 927 list_add_tail(&pxmitframe->list, &ptxservq->sta_pending.queue); 928 ptxservq->qcnt++; 929 spin_unlock_irqrestore(&pstapending->lock, irqL0); 930 return 0; 931 } 932 933 static void alloc_hwxmits(struct _adapter *padapter) 934 { 935 struct hw_xmit *hwxmits; 936 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 937 938 pxmitpriv->hwxmit_entry = HWXMIT_ENTRY; 939 pxmitpriv->hwxmits = kmalloc_array(pxmitpriv->hwxmit_entry, 940 sizeof(struct hw_xmit), GFP_ATOMIC); 941 if (!pxmitpriv->hwxmits) 942 return; 943 hwxmits = pxmitpriv->hwxmits; 944 if (pxmitpriv->hwxmit_entry == 5) { 945 pxmitpriv->bmc_txqueue.head = 0; 946 hwxmits[0] .phwtxqueue = &pxmitpriv->bmc_txqueue; 947 hwxmits[0] .sta_queue = &pxmitpriv->bm_pending; 948 pxmitpriv->vo_txqueue.head = 0; 949 hwxmits[1] .phwtxqueue = &pxmitpriv->vo_txqueue; 950 hwxmits[1] .sta_queue = &pxmitpriv->vo_pending; 951 pxmitpriv->vi_txqueue.head = 0; 952 hwxmits[2] .phwtxqueue = &pxmitpriv->vi_txqueue; 953 hwxmits[2] .sta_queue = &pxmitpriv->vi_pending; 954 pxmitpriv->bk_txqueue.head = 0; 955 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue; 956 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending; 957 pxmitpriv->be_txqueue.head = 0; 958 hwxmits[4] .phwtxqueue = &pxmitpriv->be_txqueue; 959 hwxmits[4] .sta_queue = &pxmitpriv->be_pending; 960 } else if (pxmitpriv->hwxmit_entry == 4) { 961 pxmitpriv->vo_txqueue.head = 0; 962 hwxmits[0] .phwtxqueue = &pxmitpriv->vo_txqueue; 963 hwxmits[0] .sta_queue = &pxmitpriv->vo_pending; 964 pxmitpriv->vi_txqueue.head = 0; 965 hwxmits[1] .phwtxqueue = &pxmitpriv->vi_txqueue; 966 hwxmits[1] .sta_queue = &pxmitpriv->vi_pending; 967 pxmitpriv->be_txqueue.head = 0; 968 hwxmits[2] .phwtxqueue = &pxmitpriv->be_txqueue; 969 hwxmits[2] .sta_queue = &pxmitpriv->be_pending; 970 pxmitpriv->bk_txqueue.head = 0; 971 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue; 972 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending; 973 } 974 } 975 976 static void free_hwxmits(struct _adapter *padapter) 977 { 978 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 979 980 kfree(pxmitpriv->hwxmits); 981 } 982 983 static void init_hwxmits(struct hw_xmit *phwxmit, sint entry) 984 { 985 sint i; 986 987 for (i = 0; i < entry; i++, phwxmit++) { 988 spin_lock_init(&phwxmit->xmit_lock); 989 INIT_LIST_HEAD(&phwxmit->pending); 990 phwxmit->txcmdcnt = 0; 991 phwxmit->accnt = 0; 992 } 993 } 994 995 void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe, 996 struct xmit_buf *pxmitbuf) 997 { 998 /* pxmitbuf attach to pxmitframe */ 999 pxmitframe->pxmitbuf = pxmitbuf; 1000 /* urb and irp connection */ 1001 pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0]; 1002 /* buffer addr assoc */ 1003 pxmitframe->buf_addr = pxmitbuf->pbuf; 1004 /* pxmitframe attach to pxmitbuf */ 1005 pxmitbuf->priv_data = pxmitframe; 1006 } 1007 1008 /* 1009 * tx_action == 0 == no frames to transmit 1010 * tx_action > 0 ==> we have frames to transmit 1011 * tx_action < 0 ==> we have frames to transmit, but TXFF is not even enough 1012 * to transmit 1 frame. 1013 */ 1014 1015 int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe) 1016 { 1017 unsigned long irqL; 1018 int ret; 1019 struct xmit_buf *pxmitbuf = NULL; 1020 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 1021 struct pkt_attrib *pattrib = &pxmitframe->attrib; 1022 1023 r8712_do_queue_select(padapter, pattrib); 1024 spin_lock_irqsave(&pxmitpriv->lock, irqL); 1025 if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) { 1026 ret = false; 1027 r8712_xmit_enqueue(padapter, pxmitframe); 1028 spin_unlock_irqrestore(&pxmitpriv->lock, irqL); 1029 return ret; 1030 } 1031 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv); 1032 if (pxmitbuf == NULL) { /*enqueue packet*/ 1033 ret = false; 1034 r8712_xmit_enqueue(padapter, pxmitframe); 1035 spin_unlock_irqrestore(&pxmitpriv->lock, irqL); 1036 } else { /*dump packet directly*/ 1037 spin_unlock_irqrestore(&pxmitpriv->lock, irqL); 1038 ret = true; 1039 xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf); 1040 r8712_xmit_direct(padapter, pxmitframe); 1041 } 1042 return ret; 1043 } 1044