/*---------------------------------------------------------------------------
wpalPacketRawTrimHead – Move the starting offset and return the head pointer
before the moving. The function can only be used with raw packets,
whose buffer is one piece and allocated by WLAN driver. This also
reduce the length of the packet.
Param:
pPkt - pointer to a wpt_packet.
size – number of bytes to take off the head.
Return:
A pointer to the original buffer head before the trimming.
---------------------------------------------------------------------------*/
wpt_status wpalPacketRawTrimHead(wpt_packet *pPkt, wpt_uint32 size)
{
wpt_status status = eWLAN_PAL_STATUS_SUCCESS;
// Validate the parameter pointers
if (unlikely(NULL == pPkt))
{
WPAL_TRACE(eWLAN_MODULE_PAL, eWLAN_PAL_TRACE_LEVEL_ERROR,
"%s : NULL packet pointer", __func__);
return eWLAN_PAL_STATUS_E_INVAL;
}
if ((eWLAN_PAL_PKT_TYPE_TX_802_11_MGMT == WPAL_PACKET_GET_TYPE(pPkt)) ||
(eWLAN_PAL_PKT_TYPE_RX_RAW == WPAL_PACKET_GET_TYPE(pPkt)))
{
// Continue to trim the packet
}
else
{
WPAL_TRACE(eWLAN_MODULE_PAL, eWLAN_PAL_TRACE_LEVEL_ERROR,
"%s : neither 80211 managment packet nor RAW packet", __func__);
VOS_ASSERT(0);
return eWLAN_PAL_STATUS_E_INVAL;
}
if( !VOS_IS_STATUS_SUCCESS(vos_pkt_trim_head(WPAL_TO_VOS_PKT(pPkt), (v_SIZE_t)size)) )
{
WPAL_TRACE(eWLAN_MODULE_PAL, eWLAN_PAL_TRACE_LEVEL_ERROR, "%s Invalid trim(%d)",
__func__, size);
status = eWLAN_PAL_STATUS_E_INVAL;
}
return status;
}/*wpalPacketRawTrimHead*/
/*==========================================================================
FUNCTION WDS_DS_TrimRxPacketInfo
DESCRIPTION
Trim/Remove RX BD header for NON integrated SOC.
It does nothing for integrated SOC.
DEPENDENCIES
PARAMETERS
IN
vosDataBuff vos data buffer
RETURN VALUE
VOS_STATUS_E_FAULT: pointer is NULL and other errors
VOS_STATUS_SUCCESS: Everything is good :)
SIDE EFFECTS
============================================================================*/
VOS_STATUS
WDA_DS_TrimRxPacketInfo
(
vos_pkt_t *vosDataBuff
)
{
#if defined( FEATURE_WLAN_INTEGRATED_SOC )
/* Nothing to trim
* Do Nothing */
return VOS_STATUS_SUCCESS;
#else /* FEATURE_WLAN_INTEGRATED_SOC */
VOS_STATUS vosStatus = VOS_STATUS_SUCCESS;
v_U16_t usPktLen;
v_U8_t ucMPDUHOffset;
v_U16_t usMPDUDOffset;
v_U16_t usMPDULen;
v_U8_t ucMPDUHLen = 0;
v_U8_t aucBDHeader[WLANHAL_RX_BD_HEADER_SIZE];
vos_pkt_pop_head( vosDataBuff, aucBDHeader, WLANHAL_RX_BD_HEADER_SIZE);
ucMPDUHOffset = (v_U8_t)WLANHAL_RX_BD_GET_MPDU_H_OFFSET(aucBDHeader);
usMPDUDOffset = (v_U16_t)WLANHAL_RX_BD_GET_MPDU_D_OFFSET(aucBDHeader);
usMPDULen = (v_U16_t)WLANHAL_RX_BD_GET_MPDU_LEN(aucBDHeader);
ucMPDUHLen = (v_U8_t)WLANHAL_RX_BD_GET_MPDU_H_LEN(aucBDHeader);
VOS_TRACE( VOS_MODULE_ID_TL, VOS_TRACE_LEVEL_INFO_HIGH,
"WLAN TL:BD header processing data: HO %d DO %d Len %d HLen %d"
" Tid %d BD %d",
ucMPDUHOffset, usMPDUDOffset, usMPDULen, ucMPDUHLen,
WLANHAL_RX_BD_HEADER_SIZE );
vos_pkt_get_packet_length( vosDataBuff, &usPktLen);
if (( ucMPDUHOffset >= WLANHAL_RX_BD_HEADER_SIZE ) &&
( usMPDUDOffset > ucMPDUHOffset ) &&
( usMPDULen >= ucMPDUHLen ) &&
( usPktLen >= usMPDULen ))
{
if((ucMPDUHOffset - WLANHAL_RX_BD_HEADER_SIZE) > 0)
{
vos_pkt_trim_head( vosDataBuff, ucMPDUHOffset - WLANHAL_RX_BD_HEADER_SIZE);
}
else
{
/* Nothing to trim
* Do Nothing */
}
vosStatus = VOS_STATUS_SUCCESS;
}
else
{
vosStatus = VOS_STATUS_E_FAILURE;
}
return vosStatus;
#endif /* FEATURE_WLAN_INTEGRATED_SOC */
}
/*==========================================================================
FUNCTION WDA_TLI_FastHwFwdDataFrame
DESCRIPTION
For NON integrated SOC, this function is called by TL.
Fast path function to quickly forward a data frame if HAL determines BD
signature computed here matches the signature inside current VOSS packet.
If there is a match, HAL and TL fills in the swapped packet length into
BD header and DxE header, respectively. Otherwise, packet goes back to
normal (slow) path and a new BD signature would be tagged into BD in this
VOSS packet later by the WLANHAL_FillTxBd() function.
TODO For integrated SOC, this function does nothing yet. Pima SLM/HAL
should provide the equivelant functionality.
DEPENDENCIES
PARAMETERS
IN
pvosGCtx VOS context
vosDataBuff Ptr to VOSS packet
pMetaInfo For getting frame's TID
pStaInfo For checking STA type
OUT
pvosStatus returned status
puFastFwdOK Flag to indicate whether frame could be fast forwarded
RETURN VALUE
No return.
SIDE EFFECTS
============================================================================*/
void WDA_TLI_FastHwFwdDataFrame
(
v_PVOID_t pvosGCtx,
vos_pkt_t* vosDataBuff,
VOS_STATUS* pvosStatus,
v_U32_t* puFastFwdOK,
WLANTL_MetaInfoType* pMetaInfo,
WLAN_STADescType* pStaInfo
)
{
#if defined( FEATURE_WLAN_INTEGRATED_SOC )
/* FIXME WDI/WDA should support this function
once HAL supports it
*/
#else /* FEATURE_WLAN_INTEGRATED_SOC */
v_PVOID_t pvPeekData;
v_U8_t ucDxEBDWLANHeaderLen = WLANTL_BD_HEADER_LEN(0) + sizeof(WLANBAL_sDXEHeaderType);
v_U8_t ucIsUnicast;
WLANBAL_sDXEHeaderType *pDxEHeader;
v_PVOID_t pvBDHeader;
v_PVOID_t pucBuffPtr;
v_U16_t usPktLen;
/*-----------------------------------------------------------------------
Extract packet length
-----------------------------------------------------------------------*/
vos_pkt_get_packet_length( vosDataBuff, &usPktLen);
/*-----------------------------------------------------------------------
Extract MAC address
-----------------------------------------------------------------------*/
*pvosStatus = vos_pkt_peek_data( vosDataBuff,
WLANTL_MAC_ADDR_ALIGN(0),
(v_PVOID_t)&pvPeekData,
VOS_MAC_ADDR_SIZE );
if ( VOS_STATUS_SUCCESS != *pvosStatus )
{
TLLOGE(VOS_TRACE( VOS_MODULE_ID_TL, VOS_TRACE_LEVEL_ERROR,
"WLAN TL:Failed while attempting to extract MAC Addr %d",
*pvosStatus));
*pvosStatus = VOS_STATUS_E_INVAL;
return;
}
/*-----------------------------------------------------------------------
Reserve head room for DxE header, BD, and WLAN header
-----------------------------------------------------------------------*/
vos_pkt_reserve_head( vosDataBuff, &pucBuffPtr,
ucDxEBDWLANHeaderLen );
if ( NULL == pucBuffPtr )
{
TLLOGE(VOS_TRACE( VOS_MODULE_ID_TL, VOS_TRACE_LEVEL_ERROR,
"WLAN TL:No enough space in VOSS packet %p for DxE/BD/WLAN header", vosDataBuff));
*pvosStatus = VOS_STATUS_E_INVAL;
return;
}
pDxEHeader = (WLANBAL_sDXEHeaderType *)pucBuffPtr;
pvBDHeader = (v_PVOID_t) &pDxEHeader[1];
/* UMA Tx acceleration is enabled.
* UMA would help convert frames to 802.11, fill partial BD fields and
* construct LLC header. To further accelerate this kind of frames,
* HAL would attempt to reuse the BD descriptor if the BD signature
* matches to the saved BD descriptor.
*/
if(pStaInfo->wSTAType == WLAN_STA_IBSS)
ucIsUnicast = !(((tANI_U8 *)pvPeekData)[0] & 0x01);
else
ucIsUnicast = 1;
*puFastFwdOK = (v_U32_t) WLANHAL_TxBdFastFwd(pvosGCtx, pvPeekData, pMetaInfo->ucTID, ucIsUnicast, pvBDHeader, usPktLen );
/* Can't be fast forwarded. Trim the VOS head back to original location. */
if(! *puFastFwdOK){
vos_pkt_trim_head(vosDataBuff, ucDxEBDWLANHeaderLen);
}else{
/* could be fast forwarded. Now notify BAL DxE header filling could be completely skipped
*/
v_U32_t uPacketSize = WLANTL_BD_HEADER_LEN(0) + usPktLen;
vos_pkt_set_user_data_ptr( vosDataBuff, VOS_PKT_USER_DATA_ID_BAL,
(v_PVOID_t)uPacketSize);
pDxEHeader->size = SWAP_ENDIAN_UINT32(uPacketSize);
}
*pvosStatus = VOS_STATUS_SUCCESS;
return;
#endif /* FEATURE_WLAN_INTEGRATED_SOC */
}
