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 <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 *)&etherhdr, 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, &etherhdr.h_dest, ETH_ALEN);
 211         memcpy(pattrib->src, &etherhdr.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 }