drivers/staging/rtl8712/rtl871x_xmit.c

   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 <[email protected]>
  13  * Larry Finger <[email protected]>
  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 *)&etherhdr, 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, &etherhdr.h_dest, ETH_ALEN);
 212         memcpy(pattrib->src, &etherhdr.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 }