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8821cu-20210916/hal/rtl8821c/usb/rtl8821cu_xmit.c
Alkis Georgopoulos 25700afee5 Correct executable bits
2022-12-09 11:08:52 +02:00

1192 lines
34 KiB
C
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/******************************************************************************
*
* Copyright(c) 2016 - 2017 Realtek Corporation.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
*****************************************************************************/
#define _RTL8821CU_XMIT_C_
#include <drv_types.h> /* PADAPTER, rtw_xmit.h and etc. */
#include <hal_data.h> /* HAL_DATA_TYPE */
#include "../../hal_halmac.h" /* halmac api */
#include "../rtl8821c.h" /* rtl8821c_update_txdesc() */
#include "rtl8821cu.h" /* OFFSET_SZ MAX_TX_AGG_PACKET_NUMBER_8821C */
static void update_txdesc_h2c_pkt(struct xmit_frame *pxmitframe, u8 *pmem, s32 sz)
{
u8 *ptxdesc = pmem;
_adapter *padapter = pxmitframe->padapter;
_rtw_memset(ptxdesc, 0, TXDESC_SIZE);
SET_TX_DESC_TXPKTSIZE_8821C(ptxdesc, sz);
SET_TX_DESC_QSEL_8821C(ptxdesc, HALMAC_TXDESC_QSEL_H2C_CMD);
rtl8821c_cal_txdesc_chksum(padapter, ptxdesc);
rtl8821c_dbg_dump_tx_desc(padapter, pxmitframe->frame_tag, ptxdesc);
}
static s32 update_txdesc(struct xmit_frame *pxmitframe, u8 *pmem, s32 sz, u8 bagg_pkt)
{
int pull = 0;
uint qsel;
u8 data_rate, pwr_status, offset;
_adapter *padapter = pxmitframe->padapter;
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
struct pkt_attrib *pattrib = &pxmitframe->attrib;
HAL_DATA_TYPE *pHalData = GET_HAL_DATA(padapter);
u8 *ptxdesc = pmem;
struct mlme_ext_priv *pmlmeext = &padapter->mlmeextpriv;
struct mlme_ext_info *pmlmeinfo = &(pmlmeext->mlmext_info);
sint bmcst = IS_MCAST(pattrib->ra);
u16 SWDefineContent = 0x0;
u8 DriverFixedRate = 0x0;
#if defined(CONFIG_80211N_HT)
struct sta_info *psta = NULL;
u8 max_agg_num = 0;
u8 _max_ampdu_size = 0;
u8 ht_max_ampdu_size = 0;
u8 vht_max_ampdu_size = 0;
#endif/*CONFIG_80211N_HT*/
struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
u8 hw_port = rtw_hal_get_port(padapter);
#ifndef CONFIG_USE_USB_BUFFER_ALLOC_TX
if (padapter->registrypriv.mp_mode == 0) {
if ((PACKET_OFFSET_SZ != 0) && (!bagg_pkt)
&& (rtw_usb_bulk_size_boundary(padapter, (TXDESC_SIZE + sz)) == _FALSE)) {
ptxdesc = (pmem + PACKET_OFFSET_SZ);
/* RTW_INFO("==> non-agg-pkt,shift pointer...\n"); */
pull = 1;
}
}
#endif /* !CONFIG_USE_USB_BUFFER_ALLOC_TX */
_rtw_memset(ptxdesc, 0, TXDESC_SIZE);
/* offset 0 */
SET_TX_DESC_LS_8821C(ptxdesc, 1);
/* RTW_INFO("%s==> pkt_len=%d,bagg_pkt=%02x\n",__FUNCTION__,sz,bagg_pkt); */
SET_TX_DESC_TXPKTSIZE_8821C(ptxdesc, sz);
offset = TXDESC_SIZE + OFFSET_SZ;
#ifdef CONFIG_TX_EARLY_MODE
if (bagg_pkt)
offset += EARLY_MODE_INFO_SIZE;
#endif
/* RTW_INFO("%s==>offset(0x%02x)\n",__FUNCTION__,offset); */
SET_TX_DESC_OFFSET_8821C(ptxdesc, offset);
if (bmcst)
SET_TX_DESC_BMC_8821C(ptxdesc, 1);
SET_TX_DESC_PORT_ID_8821C(ptxdesc, hw_port);
SET_TX_DESC_MULTIPLE_PORT_8821C(ptxdesc, hw_port);
#ifndef CONFIG_USE_USB_BUFFER_ALLOC_TX
if (padapter->registrypriv.mp_mode == 0) {
if ((PACKET_OFFSET_SZ != 0) && (!bagg_pkt)) {
if ((pull) && (pxmitframe->pkt_offset > 0))
pxmitframe->pkt_offset = pxmitframe->pkt_offset - 1;
}
}
#endif /* !CONFIG_USE_USB_BUFFER_ALLOC_TX */
/* RTW_INFO("%s, pkt_offset=0x%02x\n",__FUNCTION__,pxmitframe->pkt_offset); */
/* pkt_offset, unit:8 bytes padding */
if (pxmitframe->pkt_offset > 0)
SET_TX_DESC_PKT_OFFSET_8821C(ptxdesc, pxmitframe->pkt_offset);
SET_TX_DESC_MACID_8821C(ptxdesc, pattrib->mac_id);
SET_TX_DESC_RATE_ID_8821C(ptxdesc, pattrib->raid);
SET_TX_DESC_QSEL_8821C(ptxdesc, pattrib->qsel);
/*offset 12 */
if (!pattrib->qos_en) {
/* HW sequence, to fix to use 0 queue. todo: 4AC packets to use auto queue select */
SET_TX_DESC_DISQSELSEQ_8821C(ptxdesc, 1);
SET_TX_DESC_EN_HWSEQ_8821C(ptxdesc, 1); /* Hw set sequence number */
SET_TX_DESC_HW_SSN_SEL_8821C(ptxdesc, pattrib->hw_ssn_sel);
SET_TX_DESC_EN_HWEXSEQ_8821C(ptxdesc, 0);
} else
SET_TX_DESC_SW_SEQ_8821C(ptxdesc, pattrib->seqnum);
if ((pxmitframe->frame_tag & 0x0f) == DATA_FRAMETAG) {
/* RTW_INFO("pxmitframe->frame_tag == DATA_FRAMETAG\n"); */
rtl8821c_fill_txdesc_sectype(pattrib, ptxdesc);
/* offset 20 */
#ifdef CONFIG_USB_TX_AGGREGATION
if (pxmitframe->agg_num > 1) {
/* RTW_INFO("%s agg_num:%d\n",__FUNCTION__,pxmitframe->agg_num); */
SET_TX_DESC_DMA_TXAGG_NUM_8821C(ptxdesc, pxmitframe->agg_num);
}
#endif /* CONFIG_USB_TX_AGGREGATION */
rtl8821c_fill_txdesc_vcs(padapter, pattrib, ptxdesc);
if (bmcst)
fill_txdesc_force_bmc_camid(pattrib, ptxdesc);
#ifdef CONFIG_SUPPORT_DYNAMIC_TXPWR
rtw_phydm_set_dyntxpwr(padapter, ptxdesc, pattrib->mac_id);
#endif
if ((pattrib->ether_type != 0x888e) &&
(pattrib->ether_type != 0x0806) &&
(pattrib->ether_type != 0x88b4) &&
(pattrib->dhcp_pkt != 1)
#ifdef CONFIG_AUTO_AP_MODE
&& (pattrib->pctrl != _TRUE)
#endif
) {
/* Non EAP & ARP & DHCP type data packet */
#if defined(CONFIG_80211N_HT)
if (pattrib->ampdu_en == _TRUE) {
SET_TX_DESC_AGG_EN_8821C(ptxdesc, 1);
if (padapter->driver_tx_max_agg_num != 0xFF) {
max_agg_num = padapter->driver_tx_max_agg_num; /* tx desc max_agg_num (unit:2) */
} else {
psta = pattrib->psta;
ht_max_ampdu_size = psta->htpriv.ht_cap.ampdu_params_info & 0x3; /*get other side sta ht max rx ampdu size*/
/*RTW_INFO("%s, ht_max_ampdu_size=0x%02x\n", __func__, ht_max_ampdu_size);*/
vht_max_ampdu_size = psta->vhtpriv.ampdu_len;
/*RTW_INFO("%s, vht_max_ampdu_size=0x%02x\n", __func__, vht_max_ampdu_size);*/
if (vht_max_ampdu_size > ht_max_ampdu_size)
_max_ampdu_size = vht_max_ampdu_size;
else
_max_ampdu_size = ht_max_ampdu_size;
/* Calculate tx desc max_agg_num (unit:2) */
if (_max_ampdu_size == MAX_AMPDU_FACTOR_1M)
max_agg_num = (1024 * 1024 / sz) / 2;
else if (_max_ampdu_size == MAX_AMPDU_FACTOR_512K)
max_agg_num = (512 * 1024 / sz) / 2;
else if (_max_ampdu_size == MAX_AMPDU_FACTOR_256K)
max_agg_num = (256 * 1024 / sz) / 2;
else if (_max_ampdu_size == MAX_AMPDU_FACTOR_128K)
max_agg_num = (128 * 1024 / sz) / 2;
else if (_max_ampdu_size == MAX_AMPDU_FACTOR_64K)
max_agg_num = (64 * 1024 / sz) / 2;
else if (_max_ampdu_size == MAX_AMPDU_FACTOR_32K)
max_agg_num = (32 * 1024 / sz) / 2;
else if (_max_ampdu_size == MAX_AMPDU_FACTOR_16K)
max_agg_num = (16 * 1024 / sz) / 2;
else if (_max_ampdu_size == MAX_AMPDU_FACTOR_8K)
max_agg_num = (8 * 1024 / sz) / 2;
/*RTW_INFO("%s, sz=%u , _max_ampdu_size=0x%02x\n", __func__, sz, _max_ampdu_size);*/
if (psta->max_agg_num_minimal_record == 0 || psta->max_agg_num_minimal_record > max_agg_num)
psta->max_agg_num_minimal_record = max_agg_num;
if (pdvobjpriv->traffic_stat.cur_tx_tp > 10 && pdvobjpriv->traffic_stat.cur_rx_tp > 10)
max_agg_num = psta->max_agg_num_minimal_record;
}
if (max_agg_num >= 0x1F)
max_agg_num = 0x1F;
/*RTW_INFO("%s, max_agg_num=0x%02x\n", __func__, max_agg_num);*/
SET_TX_DESC_MAX_AGG_NUM_8821C(ptxdesc, max_agg_num);
/* Set A-MPDU aggregation */
SET_TX_DESC_AMPDU_DENSITY_8821C(ptxdesc, pattrib->ampdu_spacing);
} else
#endif/*CONFIG_80211N_HT*/
SET_TX_DESC_BK_8821C(ptxdesc, 1);
rtl8821c_fill_txdesc_phy(padapter, pattrib, ptxdesc);
if (pHalData->current_band_type == BAND_ON_5G)
SET_TX_DESC_DATA_RTY_LOWEST_RATE_8821C(ptxdesc, 4);
else
SET_TX_DESC_DATA_RTY_LOWEST_RATE_8821C(ptxdesc, 0);
if (pHalData->fw_ractrl == _FALSE) {
SET_TX_DESC_USE_RATE_8821C(ptxdesc, 1);
DriverFixedRate = 0x01;
if (pHalData->INIDATA_RATE[pattrib->mac_id] & BIT(7))
SET_TX_DESC_DATA_SHORT_8821C(ptxdesc, 1);
SET_TX_DESC_DATARATE_8821C(ptxdesc, (pHalData->INIDATA_RATE[pattrib->mac_id] & 0x7F));
}
if (bmcst) {
DriverFixedRate = 0x01;
fill_txdesc_bmc_tx_rate(pattrib, ptxdesc);
}
/* modify data rate by iwpriv or proc */
if (padapter->fix_rate != 0xFF) {
SET_TX_DESC_USE_RATE_8821C(ptxdesc, 1);
DriverFixedRate = 0x01;
if (padapter->fix_rate & BIT(7))
SET_TX_DESC_DATA_SHORT_8821C(ptxdesc, 1);
SET_TX_DESC_DATARATE_8821C(ptxdesc, (padapter->fix_rate & 0x7F));
if (!padapter->data_fb)
SET_TX_DESC_DISDATAFB_8821C(ptxdesc, 1);
}
if (pattrib->ldpc)
SET_TX_DESC_DATA_LDPC_8821C(ptxdesc, 1);
if (pattrib->stbc)
SET_TX_DESC_DATA_STBC_8821C(ptxdesc, 1);
#ifdef CONFIG_WMMPS_STA
if (pattrib->trigger_frame)
SET_TX_DESC_TRI_FRAME_8821C (ptxdesc, 1);
#endif /* CONFIG_WMMPS_STA */
} else {
/*
EAP data packet and ARP packet and DHCP.
Use the 1M data rate to send the EAP/ARP packet.
This will maybe make the handshake smooth.
*/
SET_TX_DESC_USE_RATE_8821C(ptxdesc, 1);
DriverFixedRate = 0x01;
SET_TX_DESC_BK_8821C(ptxdesc, 1);
/* HW will ignore this setting if the transmission rate is legacy OFDM */
if (pmlmeinfo->preamble_mode == PREAMBLE_SHORT)
SET_TX_DESC_DATA_SHORT_8821C(ptxdesc, 1);
#ifdef CONFIG_IP_R_MONITOR
if((pattrib->ether_type == ETH_P_ARP) &&
(IsSupportedTxOFDM(padapter->registrypriv.wireless_mode))) {
SET_TX_DESC_DATARATE_8821C(ptxdesc, MRateToHwRate(IEEE80211_OFDM_RATE_6MB));
#ifdef DBG_IP_R_MONITOR
RTW_INFO(FUNC_ADPT_FMT ": SP Packet(0x%04X) rate=0x%x SeqNum = %d\n",
FUNC_ADPT_ARG(padapter), pattrib->ether_type, MRateToHwRate(pmlmeext->tx_rate), pattrib->seqnum);
#endif/*DBG_IP_R_MONITOR*/
} else
#endif/*CONFIG_IP_R_MONITOR*/
SET_TX_DESC_DATARATE_8821C(ptxdesc, MRateToHwRate(pmlmeext->tx_rate));
}
#ifdef CONFIG_TDLS
#ifdef CONFIG_XMIT_ACK
/* CCX-TXRPT ack for xmit data frames */
if (pxmitframe->ack_report) {
SET_TX_DESC_SPE_RPT_8821C(ptxdesc, 1);
#ifdef DBG_CCX
/* RTW_INFO("%s set tx report\n", __func__); */
RTW_INFO("%s set tx report\n", __func__);
#endif
}
#endif /* CONFIG_XMIT_ACK */
#endif
} else if ((pxmitframe->frame_tag & 0x0f) == MGNT_FRAMETAG) {
/* RTW_INFO("pxmitframe->frame_tag == MGNT_FRAMETAG\n"); */
SET_TX_DESC_MBSSID_8821C(ptxdesc, pattrib->mbssid & 0xF);
SET_TX_DESC_USE_RATE_8821C(ptxdesc, 1);
DriverFixedRate = 0x01;
SET_TX_DESC_DATARATE_8821C(ptxdesc, MRateToHwRate(pattrib->rate));
/* VHT NDPA or HT NDPA Packet for Beamformer. */
if ((pattrib->subtype == WIFI_NDPA) ||
((pattrib->subtype == WIFI_ACTION_NOACK) && (pattrib->order == 1))) {
SET_TX_DESC_NAVUSEHDR_8821C(ptxdesc, 1);
SET_TX_DESC_DATA_BW_8821C(ptxdesc, rtl8821c_bw_mapping(padapter, pattrib));
SET_TX_DESC_SIGNALING_TA_PKT_SC_8821C(ptxdesc,
rtl8821c_sc_mapping(padapter, pattrib));
SET_TX_DESC_RTY_LMT_EN_8821C(ptxdesc, 1);
SET_TX_DESC_RTS_DATA_RTY_LMT_8821C(ptxdesc, 5);
SET_TX_DESC_DISRTSFB_8821C(ptxdesc, 1);
SET_TX_DESC_NDPA_8821C(ptxdesc, 1);
} else {
SET_TX_DESC_RTY_LMT_EN_8821C(ptxdesc, 1);
if (pattrib->retry_ctrl == _TRUE)
SET_TX_DESC_RTS_DATA_RTY_LMT_8821C(ptxdesc, 6);
else
SET_TX_DESC_RTS_DATA_RTY_LMT_8821C(ptxdesc, 12);
}
#ifdef CONFIG_XMIT_ACK
/* CCX-TXRPT ack for xmit mgmt frames */
if (pxmitframe->ack_report) {
SET_TX_DESC_SPE_RPT_8821C(ptxdesc, 1);
#ifdef DBG_CCX
/* RTW_INFO("%s set tx report\n", __func__); */
RTW_INFO("%s set tx report\n", __func__);
#endif
}
#endif /* CONFIG_XMIT_ACK */
} else if ((pxmitframe->frame_tag & 0x0f) == TXAGG_FRAMETAG)
/* RTW_INFO("pxmitframe->frame_tag == TXAGG_FRAMETAG\n"); */
RTW_INFO("pxmitframe->frame_tag == TXAGG_FRAMETAG\n");
#ifdef CONFIG_MP_INCLUDED
else if (((pxmitframe->frame_tag & 0x0f) == MP_FRAMETAG) &&
(padapter->registrypriv.mp_mode == 1))
fill_txdesc_for_mp(padapter, ptxdesc);
#endif
else {
/* RTW_INFO("pxmitframe->frame_tag = %d\n", pxmitframe->frame_tag); */
RTW_INFO("pxmitframe->frame_tag = %d\n", pxmitframe->frame_tag);
SET_TX_DESC_USE_RATE_8821C(ptxdesc, 1);
DriverFixedRate = 0x01;
SET_TX_DESC_DATARATE_8821C(ptxdesc, MRateToHwRate(pmlmeext->tx_rate));
}
if (DriverFixedRate)
SWDefineContent |= 0x01;
SET_TX_DESC_SW_DEFINE_8821C(ptxdesc, SWDefineContent);
rtl8821c_cal_txdesc_chksum(padapter, ptxdesc);
rtl8821c_dbg_dump_tx_desc(padapter, pxmitframe->frame_tag, ptxdesc);
return pull;
}
#ifdef CONFIG_XMIT_THREAD_MODE
/*
* Description
* Transmit xmitbuf to hardware tx fifo
*
* Return
* _SUCCESS ok
* _FAIL something error
*/
s32 rtl8821cu_xmit_buf_handler(PADAPTER padapter)
{
PHAL_DATA_TYPE phal;
struct xmit_priv *pxmitpriv;
struct xmit_buf *pxmitbuf;
struct xmit_frame *pxmitframe;
s32 ret;
phal = GET_HAL_DATA(padapter);
pxmitpriv = &padapter->xmitpriv;
ret = _rtw_down_sema(&pxmitpriv->xmit_sema);
if (_FAIL == ret) {
return _FAIL;
}
if (RTW_CANNOT_RUN(padapter)) {
RTW_DBG(FUNC_ADPT_FMT "- bDriverStopped(%s) bSurpriseRemoved(%s)\n",
FUNC_ADPT_ARG(padapter),
rtw_is_drv_stopped(padapter) ? "True" : "False",
rtw_is_surprise_removed(padapter) ? "True" : "False");
return _FAIL;
}
if (check_pending_xmitbuf(pxmitpriv) == _FALSE)
return _SUCCESS;
#ifdef CONFIG_LPS_LCLK
ret = rtw_register_tx_alive(padapter);
if (ret != _SUCCESS) {
return _SUCCESS;
}
#endif /* CONFIG_LPS_LCLK */
do {
pxmitbuf = dequeue_pending_xmitbuf(pxmitpriv);
if (pxmitbuf == NULL)
break;
pxmitframe = (struct xmit_frame *) pxmitbuf->priv_data;
/* only XMITBUF_DATA & XMITBUF_MGNT */
rtw_write_port_and_wait(padapter, pxmitbuf->ff_hwaddr, pxmitbuf->len, (unsigned char *)pxmitbuf, 500);
rtw_free_xmitframe(pxmitpriv, pxmitframe);
} while (1);
#ifdef CONFIG_LPS_LCLK
rtw_unregister_tx_alive(padapter);
#endif /*CONFIG_LPS_LCLK */
return _SUCCESS;
}
#endif /* CONFIG_XMIT_THREAD_MODE */
/* for non-agg data frame or management frame */
static s32 rtw_dump_xframe(PADAPTER padapter, struct xmit_frame *pxmitframe)
{
s32 ret = _SUCCESS;
s32 inner_ret = _SUCCESS;
int t, sz, w_sz, pull = 0;
u8 *mem_addr;
u8 ff_hwaddr;
struct xmit_buf *pxmitbuf = pxmitframe->pxmitbuf;
struct pkt_attrib *pattrib = &pxmitframe->attrib;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
struct security_priv *psecuritypriv = &padapter->securitypriv;
struct dvobj_priv *pdvobj = adapter_to_dvobj(padapter);
#ifdef CONFIG_80211N_HT
if ((pxmitframe->frame_tag == DATA_FRAMETAG) &&
(pxmitframe->attrib.ether_type != 0x0806) &&
(pxmitframe->attrib.ether_type != 0x888e) &&
(pxmitframe->attrib.ether_type != 0x88b4) &&
(pxmitframe->attrib.dhcp_pkt != 1))
rtw_issue_addbareq_cmd(padapter, pxmitframe, _FALSE);
#endif /* CONFIG_80211N_HT */
mem_addr = pxmitframe->buf_addr;
for (t = 0; t < pattrib->nr_frags; t++) {
if (inner_ret != _SUCCESS && ret == _SUCCESS)
ret = _FAIL;
if (t != (pattrib->nr_frags - 1)) {
sz = pxmitpriv->frag_len;
sz = sz - 4 - (psecuritypriv->sw_encrypt ? 0 : pattrib->icv_len);
} else /* no frag */
sz = pattrib->last_txcmdsz;
if (pattrib->qsel == HALMAC_TXDESC_QSEL_H2C_CMD) {
update_txdesc_h2c_pkt(pxmitframe, mem_addr, sz);
w_sz = sz + TXDESC_SIZE;
} else {
pull = update_txdesc(pxmitframe, mem_addr, sz, _FALSE);
if (pull) {
/* pull txdesc head */
mem_addr += PACKET_OFFSET_SZ;
pxmitframe->buf_addr = mem_addr;
w_sz = sz + TXDESC_SIZE;
} else
w_sz = sz + TXDESC_SIZE + PACKET_OFFSET_SZ;
}
#ifdef RTW_HALMAC
pxmitbuf->bulkout_id = rtw_halmac_usb_get_bulkout_id(pdvobj, mem_addr, w_sz);
#endif
ff_hwaddr = rtw_get_ff_hwaddr(pxmitframe);
#ifdef CONFIG_XMIT_THREAD_MODE
pxmitbuf->len = w_sz;
pxmitbuf->ff_hwaddr = ff_hwaddr;
if ((pattrib->qsel == QSLT_BEACON) || (pattrib->qsel == QSLT_CMD))
/* download rsvd page or fw */
inner_ret = rtw_write_port(padapter, ff_hwaddr, w_sz, (unsigned char *)pxmitbuf);
else
enqueue_pending_xmitbuf(pxmitpriv, pxmitbuf);
#else
inner_ret = rtw_write_port(padapter, ff_hwaddr, w_sz, (unsigned char *)pxmitbuf);
#endif
rtw_count_tx_stats(padapter, pxmitframe, sz);
/* RTW_INFO("rtw_write_port, w_sz=%d, sz=%d, txdesc_sz=%d, tid=%d\n", w_sz, sz, w_sz-sz, pattrib->priority);*/
mem_addr += w_sz;
mem_addr = (u8 *)RND4(((SIZE_PTR)(mem_addr)));
}
#ifdef CONFIG_XMIT_THREAD_MODE
if ((pattrib->qsel == QSLT_BEACON) || (pattrib->qsel == QSLT_CMD))
#endif
rtw_free_xmitframe(pxmitpriv, pxmitframe);
if (ret != _SUCCESS)
rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_UNKNOWN);
return ret;
}
#ifdef CONFIG_USB_TX_AGGREGATION
#define IDEA_CONDITION 1 /* check all packets before enqueue */
static s32 rtl8821cu_xmitframe_complete(PADAPTER padapter, struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
{
HAL_DATA_TYPE *pHalData = GET_HAL_DATA(padapter);
struct dvobj_priv *pdvobj = adapter_to_dvobj(padapter);
struct xmit_frame *pxmitframe = NULL;
struct xmit_frame *pfirstframe = NULL;
/* aggregate variable */
struct hw_xmit *phwxmit;
struct sta_info *psta = NULL;
struct tx_servq *ptxservq = NULL;
_irqL irqL;
_list *xmitframe_plist = NULL, *xmitframe_phead = NULL;
u32 pbuf; /* next pkt address */
u32 pbuf_tail; /* last pkt tail */
u32 len; /* packet length, except TXDESC_SIZE and PKT_OFFSET */
u32 bulkSize = pHalData->UsbBulkOutSize;
u8 descCount;
u32 bulkPtr;
/* dump frame variable */
u8 ff_hwaddr;
_list *sta_plist, *sta_phead;
u8 single_sta_in_queue = _FALSE;
#ifndef IDEA_CONDITION
int res = _SUCCESS;
#endif
#ifdef CONFIG_RTW_MGMT_QUEUE
/* dump management frame directly */
pxmitframe = rtw_dequeue_mgmt_xframe(pxmitpriv);
if (pxmitframe) {
rtw_dump_xframe(padapter, pxmitframe);
return _TRUE;
}
#endif
/* check xmitbuffer is ok */
if (pxmitbuf == NULL) {
pxmitbuf = rtw_alloc_xmitbuf(pxmitpriv);
if (pxmitbuf == NULL)
return _FALSE;
}
/* 1. pick up first frame */
do {
rtw_free_xmitframe(pxmitpriv, pxmitframe);
pxmitframe = rtw_dequeue_xframe(pxmitpriv, pxmitpriv->hwxmits, pxmitpriv->hwxmit_entry);
if (pxmitframe == NULL) {
/* no more xmit frame, release xmit buffer */
/* RTW_INFO("%s: no more xmit frame\n", __func__); */
rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
return _FALSE;
}
#ifndef IDEA_CONDITION
if (pxmitframe->frame_tag != DATA_FRAMETAG) {
continue;
}
/* TID 0~15 */
if ((pxmitframe->attrib.priority < 0) ||
(pxmitframe->attrib.priority > 15)) {
continue;
}
#endif
pxmitframe->pxmitbuf = pxmitbuf;
pxmitframe->buf_addr = pxmitbuf->pbuf;
pxmitbuf->priv_data = pxmitframe;
pxmitframe->agg_num = 1; /* alloc xmitframe should assign to 1. */
#ifdef CONFIG_TX_EARLY_MODE
/* first frame of aggregation, reserve one offset for EM info ,another for usb bulk-out block check */
pxmitframe->pkt_offset = (PACKET_OFFSET_SZ / 8) + 1;
#else
/* first frame of aggregation, reserve offset */
pxmitframe->pkt_offset = (PACKET_OFFSET_SZ / 8);
#endif
if (rtw_xmitframe_coalesce(padapter, pxmitframe->pkt, pxmitframe) == _FALSE) {
/* RTW_INFO("%s: coalesce 1st xmitframe failed\n", __func__); */
RTW_INFO("%s: coalesce 1st xmitframe failed\n", __func__);
continue;
}
/* always return ndis_packet after rtw_xmitframe_coalesce */
rtw_os_xmit_complete(padapter, pxmitframe);
break;
} while (1);
/* 2. aggregate same priority and same DA(AP or STA) frames */
pfirstframe = pxmitframe;
len = rtw_wlan_pkt_size(pfirstframe) + TXDESC_SIZE + (pfirstframe->pkt_offset * PACKET_OFFSET_SZ);
pbuf_tail = len;
pbuf = _RND8(pbuf_tail);
/* check pkt amount in one bulk */
descCount = 0;
bulkPtr = bulkSize;
if (pbuf < bulkPtr) {
descCount++;
if (descCount == pHalData->UsbTxAggDescNum)
goto agg_end;
} else {
descCount = 0;
bulkPtr = ((pbuf / bulkSize) + 1) * bulkSize; /* round to next bulkSize */
}
/* dequeue same priority packet from station tx queue */
psta = pfirstframe->attrib.psta;
switch (pfirstframe->attrib.priority) {
case 1:
case 2:
ptxservq = &(psta->sta_xmitpriv.bk_q);
phwxmit = pxmitpriv->hwxmits + 3;
break;
case 4:
case 5:
ptxservq = &(psta->sta_xmitpriv.vi_q);
phwxmit = pxmitpriv->hwxmits + 1;
break;
case 6:
case 7:
ptxservq = &(psta->sta_xmitpriv.vo_q);
phwxmit = pxmitpriv->hwxmits;
break;
case 0:
case 3:
default:
ptxservq = &(psta->sta_xmitpriv.be_q);
phwxmit = pxmitpriv->hwxmits + 2;
break;
}
/* RTW_INFO("==> pkt_no=%d,pkt_len=%d,len=%d,RND8_LEN=%d,pkt_offset=0x%02x\n",
pxmitframe->agg_num,pxmitframe->attrib.last_txcmdsz,len,pbuf,pxmitframe->pkt_offset ); */
_enter_critical_bh(&pxmitpriv->lock, &irqL);
sta_phead = get_list_head(phwxmit->sta_queue);
sta_plist = get_next(sta_phead);
single_sta_in_queue = rtw_end_of_queue_search(sta_phead, get_next(sta_plist));
xmitframe_phead = get_list_head(&ptxservq->sta_pending);
xmitframe_plist = get_next(xmitframe_phead);
while (rtw_end_of_queue_search(xmitframe_phead, xmitframe_plist) == _FALSE) {
pxmitframe = LIST_CONTAINOR(xmitframe_plist, struct xmit_frame, list);
xmitframe_plist = get_next(xmitframe_plist);
if (_FAIL == rtw_hal_busagg_qsel_check(padapter, pfirstframe->attrib.qsel, pxmitframe->attrib.qsel))
break;
pxmitframe->agg_num = 0; /* not first frame of aggregation */
#ifdef CONFIG_TX_EARLY_MODE
pxmitframe->pkt_offset = 1;/* not first frame of aggregation,reserve offset for EM Info */
#else
pxmitframe->pkt_offset = 0; /* not first frame of aggregation, no need to reserve offset */
#endif
len = rtw_wlan_pkt_size(pxmitframe) + TXDESC_SIZE + (pxmitframe->pkt_offset * PACKET_OFFSET_SZ);
if (_RND8(pbuf + len) > MAX_XMITBUF_SZ) {
/* RTW_INFO("%s: len> MAX_XMITBUF_SZ\n", __func__); */
pxmitframe->agg_num = 1;
pxmitframe->pkt_offset = 1;
break;
}
rtw_list_delete(&pxmitframe->list);
ptxservq->qcnt--;
phwxmit->accnt--;
#ifndef IDEA_CONDITION
/* suppose only data frames would be in queue */
if (pxmitframe->frame_tag != DATA_FRAMETAG) {
rtw_free_xmitframe(pxmitpriv, pxmitframe);
continue;
}
/* TID 0~15 */
if ((pxmitframe->attrib.priority < 0) ||
(pxmitframe->attrib.priority > 15)) {
rtw_free_xmitframe(pxmitpriv, pxmitframe);
continue;
}
#endif
pxmitframe->buf_addr = pxmitbuf->pbuf + pbuf;
if (rtw_xmitframe_coalesce(padapter, pxmitframe->pkt, pxmitframe) == _FALSE) {
/* RTW_INFO("%s coalesce failed\n", __func__); */
RTW_INFO("%s coalesce failed\n", __func__);
rtw_free_xmitframe(pxmitpriv, pxmitframe);
continue;
}
/* always return ndis_packet after rtw_xmitframe_coalesce */
rtw_os_xmit_complete(padapter, pxmitframe);
update_txdesc(pxmitframe, pxmitframe->buf_addr, pxmitframe->attrib.last_txcmdsz, _TRUE);
/* don't need xmitframe any more */
rtw_free_xmitframe(pxmitpriv, pxmitframe);
/* handle pointer and stop condition */
pbuf_tail = pbuf + len;
pbuf = _RND8(pbuf_tail);
pfirstframe->agg_num++;
#ifdef CONFIG_TX_EARLY_MODE
pxmitpriv->agg_pkt[pfirstframe->agg_num - 1].offset = _RND8(len);
pxmitpriv->agg_pkt[pfirstframe->agg_num - 1].pkt_len = pxmitframe->attrib.last_txcmdsz;
#endif
if (MAX_TX_AGG_PACKET_NUMBER_8821C == pfirstframe->agg_num)
break;
if (pbuf < bulkPtr) {
descCount++;
if (descCount == pHalData->UsbTxAggDescNum)
break;
} else {
descCount = 0;
bulkPtr = ((pbuf / bulkSize) + 1) * bulkSize;
}
} /* end while( aggregate same priority and same DA(AP or STA) frames) */
if (_rtw_queue_empty(&ptxservq->sta_pending) == _TRUE)
rtw_list_delete(&ptxservq->tx_pending);
else if (single_sta_in_queue == _FALSE) {
/* Re-arrange the order of stations in this ac queue to balance the service for these stations */
rtw_list_delete(&ptxservq->tx_pending);
rtw_list_insert_tail(&ptxservq->tx_pending, get_list_head(phwxmit->sta_queue));
}
_exit_critical_bh(&pxmitpriv->lock, &irqL);
agg_end:
#ifdef CONFIG_80211N_HT
if ((pfirstframe->attrib.ether_type != 0x0806) &&
(pfirstframe->attrib.ether_type != 0x888e) &&
(pfirstframe->attrib.ether_type != 0x88b4) &&
(pfirstframe->attrib.dhcp_pkt != 1))
rtw_issue_addbareq_cmd(padapter, pfirstframe, _FALSE);
#endif /* CONFIG_80211N_HT */
#ifndef CONFIG_USE_USB_BUFFER_ALLOC_TX
/* 3. update first frame txdesc */
if ((PACKET_OFFSET_SZ != 0) && ((pbuf_tail % bulkSize) == 0)) {
/* remove pkt_offset */
pbuf_tail -= PACKET_OFFSET_SZ;
pfirstframe->buf_addr += PACKET_OFFSET_SZ;
pfirstframe->pkt_offset--;
}
#endif /* CONFIG_USE_USB_BUFFER_ALLOC_TX */
update_txdesc(pfirstframe, pfirstframe->buf_addr, pfirstframe->attrib.last_txcmdsz, _TRUE);
#ifdef CONFIG_TX_EARLY_MODE
/* prepare EM info for first frame, agg_num value start from 1 */
pxmitpriv->agg_pkt[0].offset = _RND8(pfirstframe->attrib.last_txcmdsz + TXDESC_SIZE + (pfirstframe->pkt_offset * PACKET_OFFSET_SZ));
/* get from rtw_xmitframe_coalesce */
pxmitpriv->agg_pkt[0].pkt_len = pfirstframe->attrib.last_txcmdsz;
UpdateEarlyModeInfo8812(pxmitpriv, pxmitbuf);
#endif /*CONFIG_TX_EARLY_MODE*/
/* 4. write xmit buffer to USB FIFO */
#ifdef RTW_HALMAC
pxmitbuf->bulkout_id = rtw_halmac_usb_get_bulkout_id(pdvobj, pfirstframe->buf_addr, pfirstframe->attrib.last_txcmdsz);
#endif
ff_hwaddr = rtw_get_ff_hwaddr(pfirstframe);
#ifdef CONFIG_XMIT_THREAD_MODE
pxmitbuf->len = pbuf_tail;
pxmitbuf->ff_hwaddr = ff_hwaddr;
if (pfirstframe->attrib.qsel == QSLT_BEACON)
/* download rsvd page or fw */
rtw_write_port(padapter, ff_hwaddr, pbuf_tail, (u8 *)pxmitbuf);
else
enqueue_pending_xmitbuf(pxmitpriv, pxmitbuf);
#else
rtw_write_port(padapter, ff_hwaddr, pbuf_tail, (u8 *)pxmitbuf);
#endif
/* 5. update statisitc */
pbuf_tail -= (pfirstframe->agg_num * TXDESC_SIZE);
pbuf_tail -= (pfirstframe->pkt_offset * PACKET_OFFSET_SZ);
rtw_count_tx_stats(padapter, pfirstframe, pbuf_tail);
#ifdef CONFIG_XMIT_THREAD_MODE
if (pfirstframe->attrib.qsel == QSLT_BEACON)
#endif
rtw_free_xmitframe(pxmitpriv, pfirstframe);
return _TRUE;
}
#else /* CONFIG_USB_TX_AGGREGATION */
static s32 rtl8821cu_xmitframe_complete(PADAPTER padapter, struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
{
struct hw_xmit *phwxmits;
sint hwentry;
struct xmit_frame *pxmitframe = NULL;
int res = _SUCCESS, xcnt = 0;
phwxmits = pxmitpriv->hwxmits;
hwentry = pxmitpriv->hwxmit_entry;
#ifdef CONFIG_RTW_MGMT_QUEUE
/* dump management frame directly */
pxmitframe = rtw_dequeue_mgmt_xframe(pxmitpriv);
if (pxmitframe) {
rtw_dump_xframe(padapter, pxmitframe);
return _TRUE;
}
#endif
if (pxmitbuf == NULL) {
pxmitbuf = rtw_alloc_xmitbuf(pxmitpriv);
if (!pxmitbuf)
return _FALSE;
}
do {
pxmitframe = rtw_dequeue_xframe(pxmitpriv, phwxmits, hwentry);
if (pxmitframe) {
pxmitframe->pxmitbuf = pxmitbuf;
pxmitframe->buf_addr = pxmitbuf->pbuf;
pxmitbuf->priv_data = pxmitframe;
if ((pxmitframe->frame_tag & 0x0f) == DATA_FRAMETAG) {
/* TID0~15 */
if (pxmitframe->attrib.priority <= 15)
res = rtw_xmitframe_coalesce(padapter, pxmitframe->pkt, pxmitframe);
rtw_os_xmit_complete(padapter, pxmitframe);/* always return ndis_packet after rtw_xmitframe_coalesce */
}
if (res == _SUCCESS)
rtw_dump_xframe(padapter, pxmitframe);
else {
rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
rtw_free_xmitframe(pxmitpriv, pxmitframe);
}
xcnt++;
} else {
rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
return _FALSE;
}
break;
} while (0/*xcnt < (NR_XMITFRAME >> 3)*/);
return _TRUE;
}
#endif
static void rtl8821cu_xmit_tasklet(unsigned long priv)
{
int ret = _FALSE;
_adapter *padapter = (_adapter *)priv;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
while (1) {
if (RTW_CANNOT_TX(padapter)) {
/* RTW_INFO("xmit_tasklet => bDriverStopped or bSurpriseRemoved or bWritePortCancel\n"); */
RTW_INFO("xmit_tasklet => bDriverStopped or bSurpriseRemoved or bWritePortCancel\n");
break;
}
if (rtw_xmit_ac_blocked(padapter) == _TRUE)
break;
ret = rtl8821cu_xmitframe_complete(padapter, pxmitpriv, NULL);
if (ret == _FALSE)
break;
}
}
s32 rtl8821cu_init_xmit_priv(PADAPTER padapter)
{
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
HAL_DATA_TYPE *pHalData = GET_HAL_DATA(padapter);
#ifdef PLATFORM_LINUX
tasklet_init(&pxmitpriv->xmit_tasklet, rtl8821cu_xmit_tasklet,
(unsigned long)padapter);
#endif
#ifdef CONFIG_TX_EARLY_MODE
pHalData->bEarlyModeEnable = padapter->registrypriv.early_mode;
#endif
rtl8821c_init_xmit_priv(padapter);
return _SUCCESS;
}
void rtl8821cu_free_xmit_priv(PADAPTER padapter)
{
}
static s32 xmitframe_direct(PADAPTER padapter, struct xmit_frame *pxmitframe)
{
s32 res = _SUCCESS;
res = rtw_xmitframe_coalesce(padapter, pxmitframe->pkt, pxmitframe);
if (res == _SUCCESS)
rtw_dump_xframe(padapter, pxmitframe);
else
RTW_INFO("%s: xmitframe_coalsece failed\n", __func__);
/* RTW_INFO("%s: xmitframe_coalsece failed\n", __func__); */
return res;
}
/*
* Return
* _TRUE dump packet directly
* _FALSE enqueue packet
*/
static s32 pre_xmitframe(PADAPTER padapter, struct xmit_frame *pxmitframe)
{
_irqL irqL;
s32 res;
struct xmit_buf *pxmitbuf = NULL;
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
struct pkt_attrib *pattrib = &pxmitframe->attrib;
struct mlme_priv *pmlmepriv = &padapter->mlmepriv;
_enter_critical_bh(&pxmitpriv->lock, &irqL);
if (rtw_txframes_sta_ac_pending(padapter, pattrib) > 0)
goto enqueue;
if (rtw_xmit_ac_blocked(padapter) == _TRUE)
goto enqueue;
if (DEV_STA_LG_NUM(padapter->dvobj))
goto enqueue;
pxmitbuf = rtw_alloc_xmitbuf(pxmitpriv);
if (pxmitbuf == NULL)
goto enqueue;
_exit_critical_bh(&pxmitpriv->lock, &irqL);
pxmitframe->pxmitbuf = pxmitbuf;
pxmitframe->buf_addr = pxmitbuf->pbuf;
pxmitbuf->priv_data = pxmitframe;
if (xmitframe_direct(padapter, pxmitframe) != _SUCCESS) {
rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
rtw_free_xmitframe(pxmitpriv, pxmitframe);
}
return _TRUE;
enqueue:
res = rtw_xmitframe_enqueue(padapter, pxmitframe);
_exit_critical_bh(&pxmitpriv->lock, &irqL);
if (res != _SUCCESS) {
rtw_free_xmitframe(pxmitpriv, pxmitframe);
pxmitpriv->tx_drop++;
return _TRUE;
}
return _FALSE;
}
s32 rtl8821cu_mgnt_xmit(PADAPTER padapter, struct xmit_frame *pmgntframe)
{
return rtw_dump_xframe(padapter, pmgntframe);
}
/*
* Return
* _TRUE dump packet directly ok
* _FALSE temporary can't transmit packets to hardware
*/
s32 rtl8821cu_hal_xmit(PADAPTER padapter, struct xmit_frame *pxmitframe)
{
return pre_xmitframe(padapter, pxmitframe);
}
#ifdef CONFIG_RTW_MGMT_QUEUE
s32 rtl8821cu_hal_mgmt_xmitframe_enqueue(PADAPTER padapter, struct xmit_frame *pxmitframe)
{
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
s32 err;
err = rtw_mgmt_xmitframe_enqueue(padapter, pxmitframe);
if (err != _SUCCESS) {
rtw_free_xmitframe(pxmitpriv, pxmitframe);
pxmitpriv->tx_drop++;
} else {
#ifdef PLATFORM_LINUX
tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
#endif
}
return err;
}
#endif
s32 rtl8821cu_hal_xmitframe_enqueue(PADAPTER padapter, struct xmit_frame *pxmitframe)
{
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
s32 err;
err = rtw_xmitframe_enqueue(padapter, pxmitframe);
if (err != _SUCCESS) {
rtw_free_xmitframe(pxmitpriv, pxmitframe);
pxmitpriv->tx_drop++;
} else {
#ifdef PLATFORM_LINUX
tasklet_hi_schedule(&pxmitpriv->xmit_tasklet);
#endif
}
return err;
}
#ifdef CONFIG_HOSTAPD_MLME
static void rtl8821cu_hostap_mgnt_xmit_cb(struct urb *urb)
{
#ifdef PLATFORM_LINUX
struct sk_buff *skb = (struct sk_buff *)urb->context;
rtw_skb_free(skb);
#endif
}
s32 rtl8821cu_hostap_mgnt_xmit_entry(PADAPTER padapter, _pkt *pkt)
{
#ifdef PLATFORM_LINUX
u16 fc;
int rc, len, pipe;
unsigned int bmcst, tid, qsel;
struct sk_buff *skb, *pxmit_skb;
struct urb *urb;
unsigned char *pxmitbuf;
struct tx_desc *ptxdesc;
struct rtw_ieee80211_hdr *tx_hdr;
struct hostapd_priv *phostapdpriv = padapter->phostapdpriv;
struct net_device *pnetdev = padapter->pnetdev;
HAL_DATA_TYPE *pHalData = GET_HAL_DATA(padapter);
struct dvobj_priv *pdvobj = adapter_to_dvobj(padapter);
skb = pkt;
len = skb->len;
tx_hdr = (struct rtw_ieee80211_hdr *)(skb->data);
fc = le16_to_cpu(tx_hdr->frame_ctl);
bmcst = IS_MCAST(tx_hdr->addr1);
if ((fc & RTW_IEEE80211_FCTL_FTYPE) != RTW_IEEE80211_FTYPE_MGMT)
goto _exit;
pxmit_skb = rtw_skb_alloc(len + TXDESC_SIZE);
if (!pxmit_skb)
goto _exit;
pxmitbuf = pxmit_skb->data;
urb = usb_alloc_urb(0, GFP_ATOMIC);
if (!urb)
goto _exit;
/* ----- fill tx desc ----- */
ptxdesc = (struct tx_desc *)pxmitbuf;
_rtw_memset(ptxdesc, 0, sizeof(*ptxdesc));
/* offset 0 */
ptxdesc->txdw0 |= cpu_to_le32(len & 0x0000ffff);
ptxdesc->txdw0 |= cpu_to_le32(((TXDESC_SIZE + OFFSET_SZ) << OFFSET_SHT) & 0x00ff0000);/* default = 32 bytes for TX Desc */
ptxdesc->txdw0 |= cpu_to_le32(OWN | FSG | LSG);
if (bmcst)
ptxdesc->txdw0 |= cpu_to_le32(BIT(24));
/* offset 4 */
ptxdesc->txdw1 |= cpu_to_le32(0x00); /* MAC_ID */
ptxdesc->txdw1 |= cpu_to_le32((0x12 << QSEL_SHT) & 0x00001f00);
ptxdesc->txdw1 |= cpu_to_le32((0x06 << 16) & 0x000f0000);/* b mode */
/* offset 8 */
/* offset 12 */
ptxdesc->txdw3 |= cpu_to_le32((le16_to_cpu(tx_hdr->seq_ctl) << 16) & 0xffff0000);
/* offset 16 */
ptxdesc->txdw4 |= cpu_to_le32(BIT(8)); /* driver uses rate */
/* offset 20 */
/* HW append seq */
ptxdesc->txdw4 |= cpu_to_le32(BIT(7)); /* Hw set sequence number */
ptxdesc->txdw3 |= cpu_to_le32((8 << 28)); /* set bit3 to 1. Suugested by TimChen. 2009.12.29. */
rtl8821c_cal_txdesc_chksum(padapter, ptxdesc);
/* ----- end of fill tx desc -----*/
skb_put(pxmit_skb, len + TXDESC_SIZE);
pxmitbuf = pxmitbuf + TXDESC_SIZE;
_rtw_memcpy(pxmitbuf, skb->data, len);
/*RTW_INFO("mgnt_xmit, len=%x\n", pxmit_skb->len); */
/* ----- prepare urb for submit -----*/
/* translate DMA FIFO addr to pipehandle */
pipe = usb_sndbulkpipe(pdvobj->pusbdev, pHalData->Queue2EPNum[(u8)MGT_QUEUE_INX] & 0x0f);
usb_fill_bulk_urb(urb, pdvobj->pusbdev, pipe,
pxmit_skb->data, pxmit_skb->len, rtl8192cu_hostap_mgnt_xmit_cb, pxmit_skb);
urb->transfer_flags |= URB_ZERO_PACKET;
usb_anchor_urb(urb, &phostapdpriv->anchored);
rc = usb_submit_urb(urb, GFP_ATOMIC);
if (rc < 0) {
usb_unanchor_urb(urb);
kfree_skb(skb);
}
usb_free_urb(urb);
_exit:
rtw_skb_free(skb);
#endif
return 0;
}
#endif
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