1/****************************************************************************** 2 * rtl871x_xmit.c 3 * 4 * Copyright(c) 2007 - 2010 Realtek Corporation. All rights reserved. 5 * Linux device driver for RTL8192SU 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of version 2 of the GNU General Public License as 9 * published by the Free Software Foundation. 10 * 11 * This program is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for 14 * more details. 15 * 16 * You should have received a copy of the GNU General Public License along with 17 * this program; if not, write to the Free Software Foundation, Inc., 18 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA 19 * 20 * Modifications for inclusion into the Linux staging tree are 21 * Copyright(c) 2010 Larry Finger. All rights reserved. 22 * 23 * Contact information: 24 * WLAN FAE <wlanfae@realtek.com> 25 * Larry Finger <Larry.Finger@lwfinger.net> 26 * 27 ******************************************************************************/ 28 29#define _RTL871X_XMIT_C_ 30 31#include "osdep_service.h" 32#include "drv_types.h" 33#include "wifi.h" 34#include "osdep_intf.h" 35#include "usb_ops.h" 36 37 38static const u8 P802_1H_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0xf8}; 39static const u8 RFC1042_OUI[P80211_OUI_LEN] = {0x00, 0x00, 0x00}; 40static void init_hwxmits(struct hw_xmit *phwxmit, sint entry); 41static void alloc_hwxmits(struct _adapter *padapter); 42static void free_hwxmits(struct _adapter *padapter); 43 44static void _init_txservq(struct tx_servq *ptxservq) 45{ 46 INIT_LIST_HEAD(&ptxservq->tx_pending); 47 _init_queue(&ptxservq->sta_pending); 48 ptxservq->qcnt = 0; 49} 50 51void _r8712_init_sta_xmit_priv(struct sta_xmit_priv *psta_xmitpriv) 52{ 53 memset((unsigned char *)psta_xmitpriv, 0, 54 sizeof(struct sta_xmit_priv)); 55 spin_lock_init(&psta_xmitpriv->lock); 56 _init_txservq(&psta_xmitpriv->be_q); 57 _init_txservq(&psta_xmitpriv->bk_q); 58 _init_txservq(&psta_xmitpriv->vi_q); 59 _init_txservq(&psta_xmitpriv->vo_q); 60 INIT_LIST_HEAD(&psta_xmitpriv->legacy_dz); 61 INIT_LIST_HEAD(&psta_xmitpriv->apsd); 62} 63 64sint _r8712_init_xmit_priv(struct xmit_priv *pxmitpriv, 65 struct _adapter *padapter) 66{ 67 sint i; 68 struct xmit_buf *pxmitbuf; 69 struct xmit_frame *pxframe; 70 71 memset((unsigned char *)pxmitpriv, 0, sizeof(struct xmit_priv)); 72 spin_lock_init(&pxmitpriv->lock); 73 /* 74 Please insert all the queue initialization using _init_queue below 75 */ 76 pxmitpriv->adapter = padapter; 77 _init_queue(&pxmitpriv->be_pending); 78 _init_queue(&pxmitpriv->bk_pending); 79 _init_queue(&pxmitpriv->vi_pending); 80 _init_queue(&pxmitpriv->vo_pending); 81 _init_queue(&pxmitpriv->bm_pending); 82 _init_queue(&pxmitpriv->legacy_dz_queue); 83 _init_queue(&pxmitpriv->apsd_queue); 84 _init_queue(&pxmitpriv->free_xmit_queue); 85 /* 86 Please allocate memory with the sz = (struct xmit_frame) * NR_XMITFRAME, 87 and initialize free_xmit_frame below. 88 Please also apply free_txobj to link_up all the xmit_frames... 89 */ 90 pxmitpriv->pallocated_frame_buf = kmalloc(NR_XMITFRAME * sizeof(struct xmit_frame) + 4, 91 GFP_ATOMIC); 92 if (pxmitpriv->pallocated_frame_buf == NULL) { 93 pxmitpriv->pxmit_frame_buf = NULL; 94 return _FAIL; 95 } 96 pxmitpriv->pxmit_frame_buf = pxmitpriv->pallocated_frame_buf + 4 - 97 ((addr_t) (pxmitpriv->pallocated_frame_buf) & 3); 98 pxframe = (struct xmit_frame *) pxmitpriv->pxmit_frame_buf; 99 for (i = 0; i < NR_XMITFRAME; i++) { 100 INIT_LIST_HEAD(&(pxframe->list)); 101 pxframe->padapter = padapter; 102 pxframe->frame_tag = DATA_FRAMETAG; 103 pxframe->pkt = NULL; 104 pxframe->buf_addr = NULL; 105 pxframe->pxmitbuf = NULL; 106 list_add_tail(&(pxframe->list), 107 &(pxmitpriv->free_xmit_queue.queue)); 108 pxframe++; 109 } 110 pxmitpriv->free_xmitframe_cnt = NR_XMITFRAME; 111 /* 112 init xmit hw_txqueue 113 */ 114 _r8712_init_hw_txqueue(&pxmitpriv->be_txqueue, BE_QUEUE_INX); 115 _r8712_init_hw_txqueue(&pxmitpriv->bk_txqueue, BK_QUEUE_INX); 116 _r8712_init_hw_txqueue(&pxmitpriv->vi_txqueue, VI_QUEUE_INX); 117 _r8712_init_hw_txqueue(&pxmitpriv->vo_txqueue, VO_QUEUE_INX); 118 _r8712_init_hw_txqueue(&pxmitpriv->bmc_txqueue, BMC_QUEUE_INX); 119 pxmitpriv->frag_len = MAX_FRAG_THRESHOLD; 120 pxmitpriv->txirp_cnt = 1; 121 /*per AC pending irp*/ 122 pxmitpriv->beq_cnt = 0; 123 pxmitpriv->bkq_cnt = 0; 124 pxmitpriv->viq_cnt = 0; 125 pxmitpriv->voq_cnt = 0; 126 /*init xmit_buf*/ 127 _init_queue(&pxmitpriv->free_xmitbuf_queue); 128 _init_queue(&pxmitpriv->pending_xmitbuf_queue); 129 pxmitpriv->pallocated_xmitbuf = kmalloc(NR_XMITBUFF * sizeof(struct xmit_buf) + 4, 130 GFP_ATOMIC); 131 if (pxmitpriv->pallocated_xmitbuf == NULL) 132 return _FAIL; 133 pxmitpriv->pxmitbuf = pxmitpriv->pallocated_xmitbuf + 4 - 134 ((addr_t)(pxmitpriv->pallocated_xmitbuf) & 3); 135 pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf; 136 for (i = 0; i < NR_XMITBUFF; i++) { 137 INIT_LIST_HEAD(&pxmitbuf->list); 138 pxmitbuf->pallocated_buf = kmalloc(MAX_XMITBUF_SZ + XMITBUF_ALIGN_SZ, 139 GFP_ATOMIC); 140 if (pxmitbuf->pallocated_buf == NULL) 141 return _FAIL; 142 pxmitbuf->pbuf = pxmitbuf->pallocated_buf + XMITBUF_ALIGN_SZ - 143 ((addr_t) (pxmitbuf->pallocated_buf) & 144 (XMITBUF_ALIGN_SZ - 1)); 145 r8712_xmit_resource_alloc(padapter, pxmitbuf); 146 list_add_tail(&pxmitbuf->list, 147 &(pxmitpriv->free_xmitbuf_queue.queue)); 148 pxmitbuf++; 149 } 150 pxmitpriv->free_xmitbuf_cnt = NR_XMITBUFF; 151 INIT_WORK(&padapter->wkFilterRxFF0, r8712_SetFilter); 152 alloc_hwxmits(padapter); 153 init_hwxmits(pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry); 154 tasklet_init(&pxmitpriv->xmit_tasklet, 155 (void(*)(unsigned long))r8712_xmit_bh, 156 (unsigned long)padapter); 157 return _SUCCESS; 158} 159 160void _free_xmit_priv(struct xmit_priv *pxmitpriv) 161{ 162 int i; 163 struct _adapter *padapter = pxmitpriv->adapter; 164 struct xmit_frame *pxmitframe = (struct xmit_frame *) 165 pxmitpriv->pxmit_frame_buf; 166 struct xmit_buf *pxmitbuf = (struct xmit_buf *)pxmitpriv->pxmitbuf; 167 168 if (pxmitpriv->pxmit_frame_buf == NULL) 169 return; 170 for (i = 0; i < NR_XMITFRAME; i++) { 171 r8712_xmit_complete(padapter, pxmitframe); 172 pxmitframe++; 173 } 174 for (i = 0; i < NR_XMITBUFF; i++) { 175 r8712_xmit_resource_free(padapter, pxmitbuf); 176 kfree(pxmitbuf->pallocated_buf); 177 pxmitbuf++; 178 } 179 kfree(pxmitpriv->pallocated_frame_buf); 180 kfree(pxmitpriv->pallocated_xmitbuf); 181 free_hwxmits(padapter); 182} 183 184sint r8712_update_attrib(struct _adapter *padapter, _pkt *pkt, 185 struct pkt_attrib *pattrib) 186{ 187 struct pkt_file pktfile; 188 struct sta_info *psta = NULL; 189 struct ethhdr etherhdr; 190 191 struct tx_cmd txdesc; 192 193 sint bmcast; 194 struct sta_priv *pstapriv = &padapter->stapriv; 195 struct security_priv *psecuritypriv = &padapter->securitypriv; 196 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 197 struct qos_priv *pqospriv = &pmlmepriv->qospriv; 198 199 _r8712_open_pktfile(pkt, &pktfile); 200 201 _r8712_pktfile_read(&pktfile, (unsigned char *)ðerhdr, ETH_HLEN); 202 203 pattrib->ether_type = ntohs(etherhdr.h_proto); 204 205{ 206 /*If driver xmit ARP packet, driver can set ps mode to initial 207 * setting. It stands for getting DHCP or fix IP.*/ 208 if (pattrib->ether_type == 0x0806) { 209 if (padapter->pwrctrlpriv.pwr_mode != 210 padapter->registrypriv.power_mgnt) { 211 del_timer_sync(&pmlmepriv->dhcp_timer); 212 r8712_set_ps_mode(padapter, padapter->registrypriv. 213 power_mgnt, padapter->registrypriv.smart_ps); 214 } 215 } 216} 217 memcpy(pattrib->dst, ðerhdr.h_dest, ETH_ALEN); 218 memcpy(pattrib->src, ðerhdr.h_source, ETH_ALEN); 219 pattrib->pctrl = 0; 220 if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) || 221 (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) == true)) { 222 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 223 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 224 } else if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) { 225 memcpy(pattrib->ra, get_bssid(pmlmepriv), ETH_ALEN); 226 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 227 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE)) { 228 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 229 memcpy(pattrib->ta, get_bssid(pmlmepriv), ETH_ALEN); 230 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) { 231 /*firstly, filter packet not belongs to mp*/ 232 if (pattrib->ether_type != 0x8712) 233 return _FAIL; 234 /* for mp storing the txcmd per packet, 235 * according to the info of txcmd to update pattrib */ 236 /*get MP_TXDESC_SIZE bytes txcmd per packet*/ 237 _r8712_pktfile_read(&pktfile, (u8 *)&txdesc, TXDESC_SIZE); 238 memcpy(pattrib->ra, pattrib->dst, ETH_ALEN); 239 memcpy(pattrib->ta, pattrib->src, ETH_ALEN); 240 pattrib->pctrl = 1; 241 } 242 /* r8712_xmitframe_coalesce() overwrite this!*/ 243 pattrib->pktlen = pktfile.pkt_len; 244 if (ETH_P_IP == pattrib->ether_type) { 245 /* The following is for DHCP and ARP packet, we use cck1M to 246 * tx these packets and let LPS awake some time 247 * to prevent DHCP protocol fail */ 248 u8 tmp[24]; 249 250 _r8712_pktfile_read(&pktfile, &tmp[0], 24); 251 pattrib->dhcp_pkt = 0; 252 if (pktfile.pkt_len > 282) {/*MINIMUM_DHCP_PACKET_SIZE)*/ 253 if (ETH_P_IP == pattrib->ether_type) {/* IP header*/ 254 if (((tmp[21] == 68) && (tmp[23] == 67)) || 255 ((tmp[21] == 67) && (tmp[23] == 68))) { 256 /* 68 : UDP BOOTP client 257 * 67 : UDP BOOTP server 258 * Use low rate to send DHCP packet.*/ 259 pattrib->dhcp_pkt = 1; 260 } 261 } 262 } 263 } 264 bmcast = IS_MCAST(pattrib->ra); 265 /* get sta_info*/ 266 if (bmcast) { 267 psta = r8712_get_bcmc_stainfo(padapter); 268 pattrib->mac_id = 4; 269 } else { 270 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) { 271 psta = r8712_get_stainfo(pstapriv, 272 get_bssid(pmlmepriv)); 273 pattrib->mac_id = 5; 274 } else { 275 psta = r8712_get_stainfo(pstapriv, pattrib->ra); 276 if (psta == NULL) /* drop the pkt */ 277 return _FAIL; 278 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE)) 279 pattrib->mac_id = 5; 280 else 281 pattrib->mac_id = psta->mac_id; 282 } 283 } 284 285 if (psta) { 286 pattrib->psta = psta; 287 } else { 288 /* if we cannot get psta => drrp the pkt */ 289 return _FAIL; 290 } 291 292 pattrib->ack_policy = 0; 293 /* get ether_hdr_len */ 294 pattrib->pkt_hdrlen = ETH_HLEN; 295 296 if (pqospriv->qos_option) 297 r8712_set_qos(&pktfile, pattrib); 298 else { 299 pattrib->hdrlen = WLAN_HDR_A3_LEN; 300 pattrib->subtype = WIFI_DATA_TYPE; 301 pattrib->priority = 0; 302 } 303 if (psta->ieee8021x_blocked == true) { 304 pattrib->encrypt = 0; 305 if ((pattrib->ether_type != 0x888e) && 306 (check_fwstate(pmlmepriv, WIFI_MP_STATE) == false)) 307 return _FAIL; 308 } else 309 GET_ENCRY_ALGO(psecuritypriv, psta, pattrib->encrypt, bmcast); 310 switch (pattrib->encrypt) { 311 case _WEP40_: 312 case _WEP104_: 313 pattrib->iv_len = 4; 314 pattrib->icv_len = 4; 315 break; 316 case _TKIP_: 317 pattrib->iv_len = 8; 318 pattrib->icv_len = 4; 319 if (padapter->securitypriv.busetkipkey == _FAIL) 320 return _FAIL; 321 break; 322 case _AES_: 323 pattrib->iv_len = 8; 324 pattrib->icv_len = 8; 325 break; 326 default: 327 pattrib->iv_len = 0; 328 pattrib->icv_len = 0; 329 break; 330 } 331 332 if (pattrib->encrypt && 333 ((padapter->securitypriv.sw_encrypt == true) || 334 (psecuritypriv->hw_decrypted == false))) 335 pattrib->bswenc = true; 336 else 337 pattrib->bswenc = false; 338 /* if in MP_STATE, update pkt_attrib from mp_txcmd, and overwrite 339 * some settings above.*/ 340 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) 341 pattrib->priority = (txdesc.txdw1 >> QSEL_SHT) & 0x1f; 342 return _SUCCESS; 343} 344 345static sint 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 *psecuritypriv = &padapter->securitypriv; 355 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 356 u8 priority[4] = {0x0, 0x0, 0x0, 0x0}; 357 sint bmcst = IS_MCAST(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(psecuritypriv->XGrptxmickey 373 [psecuritypriv->XGrpKeyid].skey, 374 null_key, 16)) 375 return _FAIL; 376 /*start to calculate the mic code*/ 377 r8712_secmicsetkey(&micdata, 378 psecuritypriv-> 379 XGrptxmickey[psecuritypriv-> 380 XGrpKeyid].skey); 381 } else { 382 if (!memcmp(&stainfo->tkiptxmickey.skey[0], 383 null_key, 16)) 384 return _FAIL; 385 /* start to calculate the mic code */ 386 r8712_secmicsetkey(&micdata, 387 &stainfo->tkiptxmickey.skey[0]); 388 } 389 if (pframe[1] & 1) { /* ToDS==1 */ 390 r8712_secmicappend(&micdata, 391 &pframe[16], 6); /*DA*/ 392 if (pframe[1]&2) /* From Ds==1 */ 393 r8712_secmicappend(&micdata, 394 &pframe[24], 6); 395 else 396 r8712_secmicappend(&micdata, 397 &pframe[10], 6); 398 } else { /* ToDS==0 */ 399 r8712_secmicappend(&micdata, 400 &pframe[4], 6); /* DA */ 401 if (pframe[1]&2) /* From Ds==1 */ 402 r8712_secmicappend(&micdata, 403 &pframe[16], 6); 404 else 405 r8712_secmicappend(&micdata, 406 &pframe[10], 6); 407 } 408 if (pqospriv->qos_option == 1) 409 priority[0] = (u8)pxmitframe-> 410 attrib.priority; 411 r8712_secmicappend(&micdata, &priority[0], 4); 412 payload = pframe; 413 for (curfragnum = 0; curfragnum < pattrib->nr_frags; 414 curfragnum++) { 415 payload = (u8 *)RND4((addr_t)(payload)); 416 payload = payload+pattrib-> 417 hdrlen+pattrib->iv_len; 418 if ((curfragnum + 1) == pattrib->nr_frags) { 419 length = pattrib->last_txcmdsz - 420 pattrib->hdrlen - 421 pattrib->iv_len - 422 ((psecuritypriv->sw_encrypt) 423 ? pattrib->icv_len : 0); 424 r8712_secmicappend(&micdata, payload, 425 length); 426 payload = payload+length; 427 } else{ 428 length = pxmitpriv->frag_len - 429 pattrib->hdrlen-pattrib->iv_len - 430 ((psecuritypriv->sw_encrypt) ? 431 pattrib->icv_len : 0); 432 r8712_secmicappend(&micdata, payload, 433 length); 434 payload = payload + length + 435 pattrib->icv_len; 436 } 437 } 438 r8712_secgetmic(&micdata, &(mic[0])); 439 /* add mic code and add the mic code length in 440 * last_txcmdsz */ 441 memcpy(payload, &(mic[0]), 8); 442 pattrib->last_txcmdsz += 8; 443 payload = payload-pattrib->last_txcmdsz + 8; 444 } 445 } 446 return _SUCCESS; 447} 448 449static sint xmitframe_swencrypt(struct _adapter *padapter, 450 struct xmit_frame *pxmitframe) 451{ 452 struct pkt_attrib *pattrib = &pxmitframe->attrib; 453 454 if (pattrib->bswenc) { 455 switch (pattrib->encrypt) { 456 case _WEP40_: 457 case _WEP104_: 458 r8712_wep_encrypt(padapter, (u8 *)pxmitframe); 459 break; 460 case _TKIP_: 461 r8712_tkip_encrypt(padapter, (u8 *)pxmitframe); 462 break; 463 case _AES_: 464 r8712_aes_encrypt(padapter, (u8 *)pxmitframe); 465 break; 466 default: 467 break; 468 } 469 } 470 return _SUCCESS; 471} 472 473static sint make_wlanhdr(struct _adapter *padapter, u8 *hdr, 474 struct pkt_attrib *pattrib) 475{ 476 u16 *qc; 477 478 struct ieee80211_hdr *pwlanhdr = (struct ieee80211_hdr *)hdr; 479 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 480 struct qos_priv *pqospriv = &pmlmepriv->qospriv; 481 u16 *fctrl = &pwlanhdr->frame_ctl; 482 483 memset(hdr, 0, WLANHDR_OFFSET); 484 SetFrameSubType(fctrl, pattrib->subtype); 485 if (pattrib->subtype & WIFI_DATA_TYPE) { 486 if (check_fwstate(pmlmepriv, WIFI_STATION_STATE) == true) { 487 /* to_ds = 1, fr_ds = 0; */ 488 SetToDs(fctrl); 489 memcpy(pwlanhdr->addr1, get_bssid(pmlmepriv), 490 ETH_ALEN); 491 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN); 492 memcpy(pwlanhdr->addr3, pattrib->dst, ETH_ALEN); 493 } else if (check_fwstate(pmlmepriv, WIFI_AP_STATE) == true) { 494 /* to_ds = 0, fr_ds = 1; */ 495 SetFrDs(fctrl); 496 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN); 497 memcpy(pwlanhdr->addr2, get_bssid(pmlmepriv), 498 ETH_ALEN); 499 memcpy(pwlanhdr->addr3, pattrib->src, ETH_ALEN); 500 } else if ((check_fwstate(pmlmepriv, WIFI_ADHOC_STATE) == true) 501 || (check_fwstate(pmlmepriv, WIFI_ADHOC_MASTER_STATE) 502 == true)) { 503 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN); 504 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN); 505 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv), 506 ETH_ALEN); 507 } else if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) { 508 memcpy(pwlanhdr->addr1, pattrib->dst, ETH_ALEN); 509 memcpy(pwlanhdr->addr2, pattrib->src, ETH_ALEN); 510 memcpy(pwlanhdr->addr3, get_bssid(pmlmepriv), 511 ETH_ALEN); 512 } else 513 return _FAIL; 514 515 if (pattrib->encrypt) 516 SetPrivacy(fctrl); 517 if (pqospriv->qos_option) { 518 qc = (unsigned short *)(hdr + pattrib->hdrlen - 2); 519 if (pattrib->priority) 520 SetPriority(qc, pattrib->priority); 521 SetAckpolicy(qc, pattrib->ack_policy); 522 } 523 /* TODO: fill HT Control Field */ 524 /* Update Seq Num will be handled by f/w */ 525 { 526 struct sta_info *psta; 527 sint bmcst = IS_MCAST(pattrib->ra); 528 529 if (pattrib->psta) 530 psta = pattrib->psta; 531 else { 532 if (bmcst) 533 psta = r8712_get_bcmc_stainfo(padapter); 534 else 535 psta = 536 r8712_get_stainfo(&padapter->stapriv, 537 pattrib->ra); 538 } 539 if (psta) { 540 psta->sta_xmitpriv.txseq_tid 541 [pattrib->priority]++; 542 psta->sta_xmitpriv.txseq_tid[pattrib->priority] 543 &= 0xFFF; 544 pattrib->seqnum = psta->sta_xmitpriv. 545 txseq_tid[pattrib->priority]; 546 SetSeqNum(hdr, pattrib->seqnum); 547 } 548 } 549 } 550 return _SUCCESS; 551} 552 553static sint r8712_put_snap(u8 *data, u16 h_proto) 554{ 555 struct ieee80211_snap_hdr *snap; 556 const u8 *oui; 557 558 snap = (struct ieee80211_snap_hdr *)data; 559 snap->dsap = 0xaa; 560 snap->ssap = 0xaa; 561 snap->ctrl = 0x03; 562 if (h_proto == 0x8137 || h_proto == 0x80f3) 563 oui = P802_1H_OUI; 564 else 565 oui = RFC1042_OUI; 566 snap->oui[0] = oui[0]; 567 snap->oui[1] = oui[1]; 568 snap->oui[2] = oui[2]; 569 *(u16 *)(data + SNAP_SIZE) = htons(h_proto); 570 return SNAP_SIZE + sizeof(u16); 571} 572 573/* 574 * This sub-routine will perform all the following: 575 * 1. remove 802.3 header. 576 * 2. create wlan_header, based on the info in pxmitframe 577 * 3. append sta's iv/ext-iv 578 * 4. append LLC 579 * 5. move frag chunk from pframe to pxmitframe->mem 580 * 6. apply sw-encrypt, if necessary. 581 */ 582sint r8712_xmitframe_coalesce(struct _adapter *padapter, _pkt *pkt, 583 struct xmit_frame *pxmitframe) 584{ 585 struct pkt_file pktfile; 586 587 sint frg_len, mpdu_len, llc_sz; 588 u32 mem_sz; 589 u8 frg_inx; 590 addr_t addr; 591 u8 *pframe, *mem_start, *ptxdesc; 592 struct sta_info *psta; 593 struct security_priv *psecuritypriv = &padapter->securitypriv; 594 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 595 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 596 struct pkt_attrib *pattrib = &pxmitframe->attrib; 597 u8 *pbuf_start; 598 sint bmcst = IS_MCAST(pattrib->ra); 599 600 if (pattrib->psta == NULL) 601 return _FAIL; 602 psta = pattrib->psta; 603 if (pxmitframe->buf_addr == NULL) 604 return _FAIL; 605 pbuf_start = pxmitframe->buf_addr; 606 ptxdesc = pbuf_start; 607 mem_start = pbuf_start + TXDESC_OFFSET; 608 if (make_wlanhdr(padapter, mem_start, pattrib) == _FAIL) 609 return _FAIL; 610 _r8712_open_pktfile(pkt, &pktfile); 611 _r8712_pktfile_read(&pktfile, NULL, (uint) pattrib->pkt_hdrlen); 612 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) { 613 /* truncate TXDESC_SIZE bytes txcmd if at mp mode for 871x */ 614 if (pattrib->ether_type == 0x8712) { 615 /* take care - update_txdesc overwrite this */ 616 _r8712_pktfile_read(&pktfile, ptxdesc, TXDESC_SIZE); 617 } 618 } 619 pattrib->pktlen = pktfile.pkt_len; 620 frg_inx = 0; 621 frg_len = pxmitpriv->frag_len - 4; 622 while (1) { 623 llc_sz = 0; 624 mpdu_len = frg_len; 625 pframe = mem_start; 626 SetMFrag(mem_start); 627 pframe += pattrib->hdrlen; 628 mpdu_len -= pattrib->hdrlen; 629 /* adding icv, if necessary...*/ 630 if (pattrib->iv_len) { 631 if (psta != NULL) { 632 switch (pattrib->encrypt) { 633 case _WEP40_: 634 case _WEP104_: 635 WEP_IV(pattrib->iv, psta->txpn, 636 (u8)psecuritypriv-> 637 PrivacyKeyIndex); 638 break; 639 case _TKIP_: 640 if (bmcst) 641 TKIP_IV(pattrib->iv, 642 psta->txpn, 643 (u8)psecuritypriv-> 644 XGrpKeyid); 645 else 646 TKIP_IV(pattrib->iv, psta->txpn, 647 0); 648 break; 649 case _AES_: 650 if (bmcst) 651 AES_IV(pattrib->iv, psta->txpn, 652 (u8)psecuritypriv-> 653 XGrpKeyid); 654 else 655 AES_IV(pattrib->iv, psta->txpn, 656 0); 657 break; 658 } 659 } 660 memcpy(pframe, pattrib->iv, pattrib->iv_len); 661 pframe += pattrib->iv_len; 662 mpdu_len -= pattrib->iv_len; 663 } 664 if (frg_inx == 0) { 665 llc_sz = r8712_put_snap(pframe, pattrib->ether_type); 666 pframe += llc_sz; 667 mpdu_len -= llc_sz; 668 } 669 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) 670 mpdu_len -= pattrib->icv_len; 671 if (bmcst) 672 mem_sz = _r8712_pktfile_read(&pktfile, pframe, 673 pattrib->pktlen); 674 else 675 mem_sz = _r8712_pktfile_read(&pktfile, pframe, 676 mpdu_len); 677 pframe += mem_sz; 678 if ((pattrib->icv_len > 0) && (pattrib->bswenc)) { 679 memcpy(pframe, pattrib->icv, pattrib->icv_len); 680 pframe += pattrib->icv_len; 681 } 682 frg_inx++; 683 if (bmcst || (r8712_endofpktfile(&pktfile) == true)) { 684 pattrib->nr_frags = frg_inx; 685 pattrib->last_txcmdsz = pattrib->hdrlen + 686 pattrib->iv_len + 687 ((pattrib->nr_frags == 1) ? 688 llc_sz : 0) + 689 ((pattrib->bswenc) ? 690 pattrib->icv_len : 0) + mem_sz; 691 ClearMFrag(mem_start); 692 break; 693 } 694 addr = (addr_t)(pframe); 695 mem_start = (unsigned char *)RND4(addr) + TXDESC_OFFSET; 696 memcpy(mem_start, pbuf_start + TXDESC_OFFSET, pattrib->hdrlen); 697 } 698 699 if (xmitframe_addmic(padapter, pxmitframe) == _FAIL) 700 return _FAIL; 701 xmitframe_swencrypt(padapter, pxmitframe); 702 return _SUCCESS; 703} 704 705void r8712_update_protection(struct _adapter *padapter, u8 *ie, uint ie_len) 706{ 707 uint protection; 708 u8 *perp; 709 sint erp_len; 710 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 711 struct registry_priv *pregistrypriv = &padapter->registrypriv; 712 713 switch (pxmitpriv->vcs_setting) { 714 case DISABLE_VCS: 715 pxmitpriv->vcs = NONE_VCS; 716 break; 717 case ENABLE_VCS: 718 break; 719 case AUTO_VCS: 720 default: 721 perp = r8712_get_ie(ie, _ERPINFO_IE_, &erp_len, ie_len); 722 if (perp == NULL) 723 pxmitpriv->vcs = NONE_VCS; 724 else { 725 protection = (*(perp + 2)) & BIT(1); 726 if (protection) { 727 if (pregistrypriv->vcs_type == RTS_CTS) 728 pxmitpriv->vcs = RTS_CTS; 729 else 730 pxmitpriv->vcs = CTS_TO_SELF; 731 } else 732 pxmitpriv->vcs = NONE_VCS; 733 } 734 break; 735 } 736} 737 738struct xmit_buf *r8712_alloc_xmitbuf(struct xmit_priv *pxmitpriv) 739{ 740 unsigned long irqL; 741 struct xmit_buf *pxmitbuf = NULL; 742 struct list_head *plist, *phead; 743 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue; 744 745 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL); 746 if (list_empty(&pfree_xmitbuf_queue->queue)) 747 pxmitbuf = NULL; 748 else { 749 phead = &pfree_xmitbuf_queue->queue; 750 plist = phead->next; 751 pxmitbuf = LIST_CONTAINOR(plist, struct xmit_buf, list); 752 list_del_init(&(pxmitbuf->list)); 753 } 754 if (pxmitbuf != NULL) 755 pxmitpriv->free_xmitbuf_cnt--; 756 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL); 757 return pxmitbuf; 758} 759 760int r8712_free_xmitbuf(struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf) 761{ 762 unsigned long irqL; 763 struct __queue *pfree_xmitbuf_queue = &pxmitpriv->free_xmitbuf_queue; 764 765 if (pxmitbuf == NULL) 766 return _FAIL; 767 spin_lock_irqsave(&pfree_xmitbuf_queue->lock, irqL); 768 list_del_init(&pxmitbuf->list); 769 list_add_tail(&(pxmitbuf->list), &pfree_xmitbuf_queue->queue); 770 pxmitpriv->free_xmitbuf_cnt++; 771 spin_unlock_irqrestore(&pfree_xmitbuf_queue->lock, irqL); 772 return _SUCCESS; 773} 774 775/* 776Calling context: 7771. OS_TXENTRY 7782. RXENTRY (rx_thread or RX_ISR/RX_CallBack) 779 780If we turn on USE_RXTHREAD, then, no need for critical section. 781Otherwise, we must use _enter/_exit critical to protect free_xmit_queue... 782 783Must be very very cautious... 784 785*/ 786 787struct xmit_frame *r8712_alloc_xmitframe(struct xmit_priv *pxmitpriv) 788{ 789 /* 790 Please remember to use all the osdep_service api, 791 and lock/unlock or _enter/_exit critical to protect 792 pfree_xmit_queue 793 */ 794 unsigned long irqL; 795 struct xmit_frame *pxframe = NULL; 796 struct list_head *plist, *phead; 797 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue; 798 799 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL); 800 if (list_empty(&pfree_xmit_queue->queue)) 801 pxframe = NULL; 802 else { 803 phead = &pfree_xmit_queue->queue; 804 plist = phead->next; 805 pxframe = LIST_CONTAINOR(plist, struct xmit_frame, list); 806 list_del_init(&(pxframe->list)); 807 } 808 if (pxframe != NULL) { 809 pxmitpriv->free_xmitframe_cnt--; 810 pxframe->buf_addr = NULL; 811 pxframe->pxmitbuf = NULL; 812 pxframe->attrib.psta = NULL; 813 pxframe->pkt = NULL; 814 } 815 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL); 816 return pxframe; 817} 818 819void r8712_free_xmitframe(struct xmit_priv *pxmitpriv, 820 struct xmit_frame *pxmitframe) 821{ 822 unsigned long irqL; 823 struct __queue *pfree_xmit_queue = &pxmitpriv->free_xmit_queue; 824 struct _adapter *padapter = pxmitpriv->adapter; 825 826 if (pxmitframe == NULL) 827 return; 828 spin_lock_irqsave(&pfree_xmit_queue->lock, irqL); 829 list_del_init(&pxmitframe->list); 830 if (pxmitframe->pkt) 831 pxmitframe->pkt = NULL; 832 list_add_tail(&pxmitframe->list, &pfree_xmit_queue->queue); 833 pxmitpriv->free_xmitframe_cnt++; 834 spin_unlock_irqrestore(&pfree_xmit_queue->lock, irqL); 835 if (netif_queue_stopped(padapter->pnetdev)) 836 netif_wake_queue(padapter->pnetdev); 837} 838 839void r8712_free_xmitframe_ex(struct xmit_priv *pxmitpriv, 840 struct xmit_frame *pxmitframe) 841{ 842 if (pxmitframe == NULL) 843 return; 844 if (pxmitframe->frame_tag == DATA_FRAMETAG) 845 r8712_free_xmitframe(pxmitpriv, pxmitframe); 846} 847 848void r8712_free_xmitframe_queue(struct xmit_priv *pxmitpriv, 849 struct __queue *pframequeue) 850{ 851 unsigned long irqL; 852 struct list_head *plist, *phead; 853 struct xmit_frame *pxmitframe; 854 855 spin_lock_irqsave(&(pframequeue->lock), irqL); 856 phead = &pframequeue->queue; 857 plist = phead->next; 858 while (end_of_queue_search(phead, plist) == false) { 859 pxmitframe = LIST_CONTAINOR(plist, struct xmit_frame, list); 860 plist = plist->next; 861 r8712_free_xmitframe(pxmitpriv, pxmitframe); 862 } 863 spin_unlock_irqrestore(&(pframequeue->lock), irqL); 864} 865 866static inline struct tx_servq *get_sta_pending(struct _adapter *padapter, 867 struct __queue **ppstapending, 868 struct sta_info *psta, sint up) 869{ 870 871 struct tx_servq *ptxservq; 872 struct hw_xmit *phwxmits = padapter->xmitpriv.hwxmits; 873 874 switch (up) { 875 case 1: 876 case 2: 877 ptxservq = &(psta->sta_xmitpriv.bk_q); 878 *ppstapending = &padapter->xmitpriv.bk_pending; 879 (phwxmits+3)->accnt++; 880 break; 881 case 4: 882 case 5: 883 ptxservq = &(psta->sta_xmitpriv.vi_q); 884 *ppstapending = &padapter->xmitpriv.vi_pending; 885 (phwxmits+1)->accnt++; 886 break; 887 case 6: 888 case 7: 889 ptxservq = &(psta->sta_xmitpriv.vo_q); 890 *ppstapending = &padapter->xmitpriv.vo_pending; 891 (phwxmits+0)->accnt++; 892 break; 893 case 0: 894 case 3: 895 default: 896 ptxservq = &(psta->sta_xmitpriv.be_q); 897 *ppstapending = &padapter->xmitpriv.be_pending; 898 (phwxmits + 2)->accnt++; 899 break; 900 } 901 return ptxservq; 902} 903 904/* 905 * Will enqueue pxmitframe to the proper queue, and indicate it 906 * to xx_pending list..... 907 */ 908sint r8712_xmit_classifier(struct _adapter *padapter, 909 struct xmit_frame *pxmitframe) 910{ 911 unsigned long irqL0; 912 struct __queue *pstapending; 913 struct sta_info *psta; 914 struct tx_servq *ptxservq; 915 struct pkt_attrib *pattrib = &pxmitframe->attrib; 916 struct sta_priv *pstapriv = &padapter->stapriv; 917 struct mlme_priv *pmlmepriv = &padapter->mlmepriv; 918 sint bmcst = IS_MCAST(pattrib->ra); 919 920 if (pattrib->psta) 921 psta = pattrib->psta; 922 else { 923 if (bmcst) 924 psta = r8712_get_bcmc_stainfo(padapter); 925 else { 926 if (check_fwstate(pmlmepriv, WIFI_MP_STATE) == true) 927 psta = r8712_get_stainfo(pstapriv, 928 get_bssid(pmlmepriv)); 929 else 930 psta = r8712_get_stainfo(pstapriv, pattrib->ra); 931 } 932 } 933 if (psta == NULL) 934 return _FAIL; 935 ptxservq = get_sta_pending(padapter, &pstapending, 936 psta, pattrib->priority); 937 spin_lock_irqsave(&pstapending->lock, irqL0); 938 if (list_empty(&ptxservq->tx_pending)) 939 list_add_tail(&ptxservq->tx_pending, &pstapending->queue); 940 list_add_tail(&pxmitframe->list, &ptxservq->sta_pending.queue); 941 ptxservq->qcnt++; 942 spin_unlock_irqrestore(&pstapending->lock, irqL0); 943 return _SUCCESS; 944} 945 946static void alloc_hwxmits(struct _adapter *padapter) 947{ 948 struct hw_xmit *hwxmits; 949 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 950 951 pxmitpriv->hwxmit_entry = HWXMIT_ENTRY; 952 pxmitpriv->hwxmits = kmalloc_array(pxmitpriv->hwxmit_entry, 953 sizeof(struct hw_xmit), GFP_ATOMIC); 954 if (pxmitpriv->hwxmits == NULL) 955 return; 956 hwxmits = pxmitpriv->hwxmits; 957 if (pxmitpriv->hwxmit_entry == 5) { 958 pxmitpriv->bmc_txqueue.head = 0; 959 hwxmits[0] .phwtxqueue = &pxmitpriv->bmc_txqueue; 960 hwxmits[0] .sta_queue = &pxmitpriv->bm_pending; 961 pxmitpriv->vo_txqueue.head = 0; 962 hwxmits[1] .phwtxqueue = &pxmitpriv->vo_txqueue; 963 hwxmits[1] .sta_queue = &pxmitpriv->vo_pending; 964 pxmitpriv->vi_txqueue.head = 0; 965 hwxmits[2] .phwtxqueue = &pxmitpriv->vi_txqueue; 966 hwxmits[2] .sta_queue = &pxmitpriv->vi_pending; 967 pxmitpriv->bk_txqueue.head = 0; 968 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue; 969 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending; 970 pxmitpriv->be_txqueue.head = 0; 971 hwxmits[4] .phwtxqueue = &pxmitpriv->be_txqueue; 972 hwxmits[4] .sta_queue = &pxmitpriv->be_pending; 973 } else if (pxmitpriv->hwxmit_entry == 4) { 974 pxmitpriv->vo_txqueue.head = 0; 975 hwxmits[0] .phwtxqueue = &pxmitpriv->vo_txqueue; 976 hwxmits[0] .sta_queue = &pxmitpriv->vo_pending; 977 pxmitpriv->vi_txqueue.head = 0; 978 hwxmits[1] .phwtxqueue = &pxmitpriv->vi_txqueue; 979 hwxmits[1] .sta_queue = &pxmitpriv->vi_pending; 980 pxmitpriv->be_txqueue.head = 0; 981 hwxmits[2] .phwtxqueue = &pxmitpriv->be_txqueue; 982 hwxmits[2] .sta_queue = &pxmitpriv->be_pending; 983 pxmitpriv->bk_txqueue.head = 0; 984 hwxmits[3] .phwtxqueue = &pxmitpriv->bk_txqueue; 985 hwxmits[3] .sta_queue = &pxmitpriv->bk_pending; 986 } 987} 988 989static void free_hwxmits(struct _adapter *padapter) 990{ 991 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 992 993 kfree(pxmitpriv->hwxmits); 994} 995 996static void init_hwxmits(struct hw_xmit *phwxmit, sint entry) 997{ 998 sint i; 999 1000 for (i = 0; i < entry; i++, phwxmit++) { 1001 spin_lock_init(&phwxmit->xmit_lock); 1002 INIT_LIST_HEAD(&phwxmit->pending); 1003 phwxmit->txcmdcnt = 0; 1004 phwxmit->accnt = 0; 1005 } 1006} 1007 1008void xmitframe_xmitbuf_attach(struct xmit_frame *pxmitframe, 1009 struct xmit_buf *pxmitbuf) 1010{ 1011 /* pxmitbuf attach to pxmitframe */ 1012 pxmitframe->pxmitbuf = pxmitbuf; 1013 /* urb and irp connection */ 1014 pxmitframe->pxmit_urb[0] = pxmitbuf->pxmit_urb[0]; 1015 /* buffer addr assoc */ 1016 pxmitframe->buf_addr = pxmitbuf->pbuf; 1017 /* pxmitframe attach to pxmitbuf */ 1018 pxmitbuf->priv_data = pxmitframe; 1019} 1020 1021/* 1022 * tx_action == 0 == no frames to transmit 1023 * tx_action > 0 ==> we have frames to transmit 1024 * tx_action < 0 ==> we have frames to transmit, but TXFF is not even enough 1025 * to transmit 1 frame. 1026 */ 1027 1028int r8712_pre_xmit(struct _adapter *padapter, struct xmit_frame *pxmitframe) 1029{ 1030 unsigned long irqL; 1031 int ret; 1032 struct xmit_buf *pxmitbuf = NULL; 1033 struct xmit_priv *pxmitpriv = &padapter->xmitpriv; 1034 struct pkt_attrib *pattrib = &pxmitframe->attrib; 1035 1036 r8712_do_queue_select(padapter, pattrib); 1037 spin_lock_irqsave(&pxmitpriv->lock, irqL); 1038 if (r8712_txframes_sta_ac_pending(padapter, pattrib) > 0) { 1039 ret = false; 1040 r8712_xmit_enqueue(padapter, pxmitframe); 1041 spin_unlock_irqrestore(&pxmitpriv->lock, irqL); 1042 return ret; 1043 } 1044 pxmitbuf = r8712_alloc_xmitbuf(pxmitpriv); 1045 if (pxmitbuf == NULL) { /*enqueue packet*/ 1046 ret = false; 1047 r8712_xmit_enqueue(padapter, pxmitframe); 1048 spin_unlock_irqrestore(&pxmitpriv->lock, irqL); 1049 } else { /*dump packet directly*/ 1050 spin_unlock_irqrestore(&pxmitpriv->lock, irqL); 1051 ret = true; 1052 xmitframe_xmitbuf_attach(pxmitframe, pxmitbuf); 1053 r8712_xmit_direct(padapter, pxmitframe); 1054 } 1055 return ret; 1056} 1057