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rtl8812au/hal/rtl8812a/usb/rtl8812au_xmit.c
Mathy Vanhoef 1b86121806 rtl8812a: do not overwrite sequence number of injected frames 
The sequence number of inject frames was being overwritten. This prevents
certain older attacks against WEP fragmentation older TKIP attacks. Fix
this by tracking if a frames was injected in monitor mode, and if so, do
not overwrite its sequence number.

The patch also adds a module parameter to revert this behaviour if needed.
By setting rtw_monitor_overwrite_seqnum to 1, sequence numbers will again
be set by the driver/device. This may by useful if user-space relied on
the driver/device to set sequence numbers.

This patch was tested using an Alfa AWUS036ACH.
2020-06-26 09:27:54 +04:00

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/******************************************************************************
*
* Copyright(c) 2007 - 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 _RTL8812AU_XMIT_C_
/* #include <drv_types.h> */
#include <rtl8812a_hal.h>
s32 rtl8812au_init_xmit_priv(_adapter *padapter)
{
struct xmit_priv *pxmitpriv = &padapter->xmitpriv;
HAL_DATA_TYPE *pHalData = GET_HAL_DATA(padapter);
#ifdef PLATFORM_LINUX
tasklet_init(&pxmitpriv->xmit_tasklet,
(void(*)(unsigned long))rtl8812au_xmit_tasklet,
(unsigned long)padapter);
#endif
#ifdef CONFIG_TX_EARLY_MODE
pHalData->bEarlyModeEnable = padapter->registrypriv.early_mode;
#endif
return _SUCCESS;
}
void rtl8812au_free_xmit_priv(_adapter *padapter)
{
}
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);
#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;
#endif/*CONFIG_80211N_HT*/
u8 vht_max_ampdu_size = 0;
struct dvobj_priv *pdvobjpriv = adapter_to_dvobj(padapter);
struct registry_priv *pregpriv = &(padapter->registrypriv);
#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);
/* 4 offset 0 */
SET_TX_DESC_FIRST_SEG_8812(ptxdesc, 1);
SET_TX_DESC_LAST_SEG_8812(ptxdesc, 1);
SET_TX_DESC_OWN_8812(ptxdesc, 1);
/* RTW_INFO("%s==> pkt_len=%d,bagg_pkt=%02x\n",__FUNCTION__,sz,bagg_pkt); */
SET_TX_DESC_PKT_SIZE_8812(ptxdesc, sz);
offset = TXDESC_SIZE + OFFSET_SZ;
#ifdef CONFIG_TX_EARLY_MODE
if (bagg_pkt) {
offset += EARLY_MODE_INFO_SIZE ;/* 0x28 */
}
#endif
/* RTW_INFO("%s==>offset(0x%02x)\n",__FUNCTION__,offset); */
SET_TX_DESC_OFFSET_8812(ptxdesc, offset);
if (bmcst)
SET_TX_DESC_BMC_8812(ptxdesc, 1);
#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
/* 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_8812(ptxdesc, pxmitframe->pkt_offset);
SET_TX_DESC_MACID_8812(ptxdesc, pattrib->mac_id);
SET_TX_DESC_RATE_ID_8812(ptxdesc, pattrib->raid);
SET_TX_DESC_QUEUE_SEL_8812(ptxdesc, pattrib->qsel);
/* offset 12 */
if (pattrib->injected == _TRUE && !pregpriv->monitor_overwrite_seqnum) {
/* Prevent sequence number from being overwritten */
SET_TX_DESC_HWSEQ_EN_8812(ptxdesc, 0); /* Hw do not set sequence number */
SET_TX_DESC_SEQ_8812(ptxdesc, pattrib->seqnum); /* Copy inject sequence number to TxDesc */
}
else if (!pattrib->qos_en) {
SET_TX_DESC_HWSEQ_EN_8812(ptxdesc, 1); /* Hw set sequence number */
} else {
SET_TX_DESC_SEQ_8812(ptxdesc, pattrib->seqnum);
}
if ((pxmitframe->frame_tag & 0x0f) == DATA_FRAMETAG) {
/* RTW_INFO("pxmitframe->frame_tag == DATA_FRAMETAG\n"); */
rtl8812a_fill_txdesc_sectype(pattrib, ptxdesc);
#if defined(CONFIG_CONCURRENT_MODE)
if (bmcst)
fill_txdesc_force_bmc_camid(pattrib, ptxdesc);
#endif
/* 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_USB_TXAGG_NUM_8812(ptxdesc, pxmitframe->agg_num);
}
#endif
rtl8812a_fill_txdesc_vcs(padapter, pattrib, ptxdesc);
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_ENABLE_8812(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_8812(ptxdesc, max_agg_num);
/* Set A-MPDU aggregation. */
SET_TX_DESC_AMPDU_DENSITY_8812(ptxdesc, pattrib->ampdu_spacing);
} else
#endif/*CONFIG_80211N_HT*/
SET_TX_DESC_AGG_BREAK_8812(ptxdesc, 1);
rtl8812a_fill_txdesc_phy(padapter, pattrib, ptxdesc);
/* DATA Rate FB LMT */
SET_TX_DESC_DATA_RATE_FB_LIMIT_8812(ptxdesc, 0x1f);
if (pHalData->fw_ractrl == _FALSE) {
SET_TX_DESC_USE_RATE_8812(ptxdesc, 1);
if (pHalData->INIDATA_RATE[pattrib->mac_id] & BIT(7))
SET_TX_DESC_DATA_SHORT_8812(ptxdesc, 1);
SET_TX_DESC_TX_RATE_8812(ptxdesc, (pHalData->INIDATA_RATE[pattrib->mac_id] & 0x7F));
}
if (bmcst)
fill_txdesc_bmc_tx_rate(pattrib, ptxdesc);
if (padapter->fix_rate != 0xFF) { /* modify data rate by iwpriv */
SET_TX_DESC_USE_RATE_8812(ptxdesc, 1);
if (padapter->fix_rate & BIT(7))
SET_TX_DESC_DATA_SHORT_8812(ptxdesc, 1);
SET_TX_DESC_TX_RATE_8812(ptxdesc, (padapter->fix_rate & 0x7F));
if (!padapter->data_fb)
SET_TX_DESC_DISABLE_FB_8812(ptxdesc, 1);
}
if (pattrib->ldpc)
SET_TX_DESC_DATA_LDPC_8812(ptxdesc, 1);
if (pattrib->stbc)
SET_TX_DESC_DATA_STBC_8812(ptxdesc, 1);
} 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_8812(ptxdesc, 1);
SET_TX_DESC_AGG_BREAK_8812(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_8812(ptxdesc, 1);
#ifdef CONFIG_IP_R_MONITOR
if((pattrib->ether_type == ETH_P_ARP) &&
(IsSupportedTxOFDM(padapter->registrypriv.wireless_mode))) {
SET_TX_DESC_TX_RATE_8812(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_TX_RATE_8812(ptxdesc, MRateToHwRate(pmlmeext->tx_rate));
}
#ifdef CONFIG_TDLS
#ifdef CONFIG_XMIT_ACK
/* CCX-TXRPT ack for xmit mgmt frames. */
if (pxmitframe->ack_report) {
SET_TX_DESC_SPE_RPT_8812(ptxdesc, 1);
#ifdef DBG_CCX
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"); */
if (IS_HARDWARE_TYPE_8821(padapter))
SET_TX_DESC_MBSSID_8821(ptxdesc, pattrib->mbssid);
SET_TX_DESC_USE_RATE_8812(ptxdesc, 1);
SET_TX_DESC_TX_RATE_8812(ptxdesc, MRateToHwRate(pattrib->rate));
/* VHT NDPA or HT NDPA Packet for Beamformer. */
#ifdef CONFIG_BEAMFORMING
if ((pattrib->subtype == WIFI_NDPA) ||
((pattrib->subtype == WIFI_ACTION_NOACK) && (pattrib->order == 1))) {
SET_TX_DESC_NAV_USE_HDR_8812(ptxdesc, 1);
SET_TX_DESC_DATA_BW_8812(ptxdesc, BWMapping_8812(padapter, pattrib));
SET_TX_DESC_RTS_SC_8812(ptxdesc, SCMapping_8812(padapter, pattrib));
SET_TX_DESC_RETRY_LIMIT_ENABLE_8812(ptxdesc, 1);
SET_TX_DESC_DATA_RETRY_LIMIT_8812(ptxdesc, 5);
SET_TX_DESC_DISABLE_FB_8812(ptxdesc, 1);
/* if(pattrib->rts_cca) */
/* { */
/* SET_TX_DESC_NDPA_8812(ptxdesc, 2); */
/* } */
/* else */
{
SET_TX_DESC_NDPA_8812(ptxdesc, 1);
}
} else
#endif
{
SET_TX_DESC_RETRY_LIMIT_ENABLE_8812(ptxdesc, 1);
if (pattrib->retry_ctrl == _TRUE)
SET_TX_DESC_DATA_RETRY_LIMIT_8812(ptxdesc, 6);
else
SET_TX_DESC_DATA_RETRY_LIMIT_8812(ptxdesc, 0);
}
#ifdef CONFIG_XMIT_ACK
/* CCX-TXRPT ack for xmit mgmt frames. */
if (pxmitframe->ack_report) {
SET_TX_DESC_SPE_RPT_8812(ptxdesc, 1);
#ifdef DBG_CCX
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");
#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);
SET_TX_DESC_USE_RATE_8812(ptxdesc, 1);
SET_TX_DESC_TX_RATE_8812(ptxdesc, MRateToHwRate(pmlmeext->tx_rate));
}
#ifdef CONFIG_ANTENNA_DIVERSITY
if (!bmcst && pattrib->psta)
odm_set_tx_ant_by_tx_info(adapter_to_phydm(padapter), ptxdesc, pattrib->psta->cmn.mac_id);
#endif
#ifdef CONFIG_BEAMFORMING
SET_TX_DESC_GID_8812(ptxdesc, pattrib->txbf_g_id);
SET_TX_DESC_PAID_8812(ptxdesc, pattrib->txbf_p_aid);
#endif
rtl8812a_cal_txdesc_chksum(ptxdesc);
_dbg_dump_tx_info(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 rtl8812au_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 (ret == _FAIL)
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 */
/* BUFFER ACCESS CTRL */
#define DBGBUF_TXPKTBUF 0x69
#define DBGBUF_RXPKTBUF 0xA5
#define DBGBUF_TXRPTBUF 0x7F
#define BIT_TXPKTBUF_DBG BIT7
#define BIT_RXPKTBUF_DBG BIT0
#define BIT_TXRPTBUF_DBG BIT4
u32 upload_txpktbuf_8812au(_adapter *adapter, u8 *buf, u32 buflen)
{
u32 len = 0, j, qw_addr = 0;
u16 beacon_head = 0xF7, loop_cnt;
RTW_INFO("%s(): upload reserved page from 0x%02X, len=%d\n", __func__, beacon_head, buflen);
rtw_write8(adapter, REG_PKT_BUFF_ACCESS_CTRL, DBGBUF_TXPKTBUF);
do {
for (j = 0 ; j < 8 ; j++) {
if ((len+j) >= buflen)
break;
rtw_write8(adapter, REG_PKTBUF_DBG_DATA_L + j, buf[len++]);
}
rtw_write32(adapter, REG_PKTBUF_DBG_CTRL, 0xff800000+(beacon_head<<6) + qw_addr);
loop_cnt = 0;
while ((rtw_read32(adapter, REG_PKTBUF_DBG_CTRL) & BIT23) == false) {
rtw_udelay_os(10);
if (loop_cnt++ == 100)
return _FALSE;
}
qw_addr++;
if ((len+j) >= buflen)
break;
} while (_TRUE);
rtw_write32(adapter, REG_CPU_MGQ_INFORMATION, rtw_read32(adapter, REG_CPU_MGQ_INFORMATION)|BIT28);
RTW_INFO("%s(): end\n", __func__);
return _TRUE;
}
/* for non-agg data frame or management frame */
static s32 rtw_dump_xframe(_adapter *padapter, struct xmit_frame *pxmitframe)
{
s32 ret = _SUCCESS;
s32 inner_ret = _SUCCESS;
int t, sz, w_sz, pull = 0;
u8 *mem_addr;
u32 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;
#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);
#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;
pull = update_txdesc(pxmitframe, mem_addr, sz, _FALSE);
if (pull) {
mem_addr += PACKET_OFFSET_SZ; /* pull txdesc head */
/* pxmitbuf->pbuf = mem_addr; */
pxmitframe->buf_addr = mem_addr;
w_sz = sz + TXDESC_SIZE;
} else
w_sz = sz + TXDESC_SIZE + PACKET_OFFSET_SZ;
ff_hwaddr = rtw_get_ff_hwaddr(pxmitframe);
if (IS_FULL_SPEED_USB(padapter) && (ff_hwaddr == BCN_QUEUE_INX)) {
inner_ret = upload_txpktbuf_8812au(padapter, mem_addr, w_sz);
if (inner_ret) {
rtw_write32(padapter, REG_CPU_MGQ_INFORMATION, rtw_read32(padapter, REG_CPU_MGQ_INFORMATION)|BIT28);
rtw_sctx_done_err(&pxmitbuf->sctx, RTW_SCTX_DONE_SUCCESS);
}
rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
} else {
#ifdef CONFIG_XMIT_THREAD_MODE
pxmitbuf->len = w_sz;
pxmitbuf->ff_hwaddr = ff_hwaddr;
if (pxmitframe->attrib.qsel == QSLT_BEACON)
/* download rsvd page */
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 (pxmitframe->attrib.qsel == QSLT_BEACON)
#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 */
s32 rtl8812au_xmitframe_complete(_adapter *padapter, struct xmit_priv *pxmitpriv, struct xmit_buf *pxmitbuf)
{
HAL_DATA_TYPE *pHalData = GET_HAL_DATA(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 */
u32 ff_hwaddr;
_list *sta_plist, *sta_phead;
u8 single_sta_in_queue = _FALSE;
#ifndef IDEA_CONDITION
int res = _SUCCESS;
#endif
/* check xmitbuffer is ok */
if (pxmitbuf == NULL) {
pxmitbuf = rtw_alloc_xmitbuf(pxmitpriv);
if (pxmitbuf == NULL) {
/* RTW_INFO("%s #1, connot alloc xmitbuf!!!!\n",__FUNCTION__); */
return _FALSE;
}
}
/* RTW_INFO("%s =====================================\n",__FUNCTION__); */
/* 3 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("no more xmit frame ,return\n"); */
rtw_free_xmitbuf(pxmitpriv, pxmitbuf);
return _FALSE;
}
#ifndef IDEA_CONDITION
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
/* RTW_INFO("==> pxmitframe->attrib.priority:%d\n",pxmitframe->attrib.priority); */
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
pxmitframe->pkt_offset = (PACKET_OFFSET_SZ / 8) + 1; /* 2; */ /* first frame of aggregation, reserve one offset for EM info ,another for usb bulk-out block check */
#else
pxmitframe->pkt_offset = (PACKET_OFFSET_SZ / 8); /* 1; */ /* first frame of aggregation, reserve offset */
#endif
if (rtw_xmitframe_coalesce(padapter, pxmitframe->pkt, pxmitframe) == _FALSE) {
RTW_INFO("%s coalesce 1st xmitframe failed\n", __FUNCTION__);
continue;
}
#ifdef CONFIG_MCC_MODE
/* to calculate packet to write port */
rtw_hal_mcc_calc_tx_bytes_to_port(padapter, pxmitframe->pkt->len);
#endif
/* always return ndis_packet after rtw_xmitframe_coalesce */
rtw_os_xmit_complete(padapter, pxmitframe);
break;
} while (1);
/* 3 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",__FUNCTION__); */
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->pxmitbuf = pxmitbuf; */
pxmitframe->buf_addr = pxmitbuf->pbuf + pbuf;
if (rtw_xmitframe_coalesce(padapter, pxmitframe->pkt, pxmitframe) == _FALSE) {
RTW_INFO("%s coalesce failed\n", __FUNCTION__);
rtw_free_xmitframe(pxmitpriv, pxmitframe);
continue;
}
#ifdef CONFIG_MCC_MODE
/* to calculate packet to write port */
rtw_hal_mcc_calc_tx_bytes_to_port(padapter, pxmitframe->pkt->len);
#endif
/* RTW_INFO("==> pxmitframe->attrib.priority:%d\n",pxmitframe->attrib.priority); */
/* always return ndis_packet after rtw_xmitframe_coalesce */
rtw_os_xmit_complete(padapter, pxmitframe);
/* (len - TXDESC_SIZE) == pxmitframe->attrib.last_txcmdsz */
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
#ifdef CONFIG_MCC_MODE
if (rtw_hal_mcc_stop_tx_bytes_to_port(padapter))
break;
#endif
if (MAX_TX_AGG_PACKET_NUMBER == 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);
#endif /* CONFIG_80211N_HT */
#ifndef CONFIG_USE_USB_BUFFER_ALLOC_TX
/* 3 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--;
/* RTW_INFO("$$$$$ buf size equal to USB block size $$$$$$\n"); */
}
#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));
pxmitpriv->agg_pkt[0].pkt_len = pfirstframe->attrib.last_txcmdsz;/* get from rtw_xmitframe_coalesce */
UpdateEarlyModeInfo8812(pxmitpriv, pxmitbuf);
#endif
/* 3 4. write xmit buffer to USB FIFO */
ff_hwaddr = rtw_get_ff_hwaddr(pfirstframe);
/* RTW_INFO("%s ===================================== write port,buf_size(%d)\n",__FUNCTION__,pbuf_tail); */
/* xmit address == ((xmit_frame*)pxmitbuf->priv_data)->buf_addr */
#ifdef CONFIG_XMIT_THREAD_MODE
pxmitbuf->len = pbuf_tail;
pxmitbuf->ff_hwaddr = ff_hwaddr;
if (pfirstframe->attrib.qsel == QSLT_BEACON)
/* download rsvd page*/
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
/* 3 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
s32 rtl8812au_xmitframe_complete(_adapter *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;
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) {
if (pxmitframe->attrib.priority <= 15) /* TID0~15 */
res = rtw_xmitframe_coalesce(padapter, pxmitframe->pkt, pxmitframe);
/* RTW_INFO("==> pxmitframe->attrib.priority:%d\n",pxmitframe->attrib.priority); */
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 s32 xmitframe_direct(_adapter *padapter, struct xmit_frame *pxmitframe)
{
s32 res = _SUCCESS;
/* RTW_INFO("==> %s\n",__FUNCTION__); */
res = rtw_xmitframe_coalesce(padapter, pxmitframe->pkt, pxmitframe);
if (res == _SUCCESS)
rtw_dump_xframe(padapter, pxmitframe);
else
RTW_INFO("==> %s xmitframe_coalsece failed\n", __FUNCTION__);
return res;
}
/*
* Return
* _TRUE dump packet directly
* _FALSE enqueue packet
*/
static s32 pre_xmitframe(_adapter *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) {
/* RTW_INFO("enqueue AC(%d)\n",pattrib->priority); */
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 rtl8812au_mgnt_xmit(_adapter *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 rtl8812au_hal_xmit(_adapter *padapter, struct xmit_frame *pxmitframe)
{
return pre_xmitframe(padapter, pxmitframe);
}
s32 rtl8812au_hal_xmitframe_enqueue(_adapter *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 rtl8812au_hostap_mgnt_xmit_cb(struct urb *urb)
{
#ifdef PLATFORM_LINUX
struct sk_buff *skb = (struct sk_buff *)urb->context;
/* RTW_INFO("%s\n", __FUNCTION__); */
rtw_skb_free(skb);
#endif
}
s32 rtl8812au_hostap_mgnt_xmit_entry(_adapter *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);
/* RTW_INFO("%s\n", __FUNCTION__); */
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. */
rtl8188eu_cal_txdesc_chksum(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 = ffaddr2pipehdl(pdvobj, MGT_QUEUE_INX); */
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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