/*---------------------------------------------------------------------------
wpalPacketRXLowResourceCB – RX RAW packer CB function
Param:
pPacket – Available RX packet
userData - PAL Client Context, DXE
Return:
Status
---------------------------------------------------------------------------*/
VOS_STATUS wpalPacketRXLowResourceCB(vos_pkt_t *pPacket, v_VOID_t *userData)
{
VOS_STATUS vosStatus = VOS_STATUS_E_FAILURE;
void* pData = NULL;
if (NULL == pPacket)
{
WPAL_TRACE(eWLAN_MODULE_PAL, eWLAN_PAL_TRACE_LEVEL_ERROR,
"Get new RX PAL packet fail");
return VOS_STATUS_E_FAILURE;
}
vosStatus = vos_pkt_reserve_head_fast( pPacket, &pData,
VPKT_SIZE_BUFFER );
if(VOS_STATUS_SUCCESS != vosStatus)
{
WPAL_TRACE(eWLAN_MODULE_PAL, eWLAN_PAL_TRACE_LEVEL_ERROR,
"Prepare RX packet for DXE fail");
return VOS_STATUS_E_FAILURE;
}
if((NULL == wpalPacketAvailableCB) || (NULL == userData))
{
WPAL_TRACE(eWLAN_MODULE_PAL, eWLAN_PAL_TRACE_LEVEL_ERROR,
"Invalid ARG for new RX packet");
return VOS_STATUS_E_FAILURE;
}
wpalPacketAvailableCB( (wpt_packet *)pPacket, userData );
return VOS_STATUS_SUCCESS;
}
/*---------------------------------------------------------------------------
wpalPacketAlloc – Allocate a wpt_packet from PAL.
Param:
pktType – specify the type of wpt_packet to allocate
nPktSize - packet size
Return:
A pointer to the wpt_packet. NULL means fail.
---------------------------------------------------------------------------*/
wpt_packet * wpalPacketAlloc(wpt_packet_type pktType, wpt_uint32 nPktSize,
wpalPacketLowPacketCB rxLowCB, void *usrData)
{
VOS_STATUS vosStatus = VOS_STATUS_E_FAILURE;
wpt_packet* pPkt = NULL;
vos_pkt_t* pVosPkt = NULL;
void* pData = NULL;
v_U16_t allocLen;
/*- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
switch (pktType)
{
case eWLAN_PAL_PKT_TYPE_TX_802_11_MGMT:
vosStatus = vos_pkt_get_packet(&pVosPkt, VOS_PKT_TYPE_TX_802_11_MGMT,
nPktSize, 1, VOS_FALSE,
NULL, NULL /*no callback*/);
break;
case eWLAN_PAL_PKT_TYPE_RX_RAW:
/* Set the wpalPacketAvailableCB before we try to get a VOS
* packet from the 'free list' and reset it if vos_pkt_get_packet()
* returns a valid packet. This order is required to avoid the
* race condition:
* 1. The below call to vos_pkt_get_packet() in RX_Thread determines
* that no more packets are available in the 'free list' and sets
* the low resource callbacks.
* 2. in parallel vos_pkt_return_packet() is called in MC_Thread for a
* Management frame before wpalPacketAlloc() gets a chance to set
* wpalPacketAvailableCB and since the 'low resource callbacks'
* are set the callback function - wpalPacketRXLowResourceCB is
* executed,but since wpalPacketAvailableCB is still NULL the low
* resource recovery fails.
*/
wpalPacketAvailableCB = rxLowCB;
vosStatus = vos_pkt_get_packet(&pVosPkt, VOS_PKT_TYPE_RX_RAW,
nPktSize, 1, VOS_FALSE,
wpalPacketRXLowResourceCB, usrData);
#ifndef FEATURE_R33D
/* Reserve the entire raw rx buffer for DXE */
if( vosStatus == VOS_STATUS_SUCCESS )
{
wpalPacketAvailableCB = NULL;
vosStatus = vos_pkt_reserve_head_fast( pVosPkt, &pData, nPktSize );
}
#endif /* FEATURE_R33D */
if((NULL != pVosPkt) && (VOS_STATUS_E_RESOURCES != vosStatus))
{
vos_pkt_get_packet_length(pVosPkt, &allocLen);
if (nPktSize != allocLen)
{
WPAL_TRACE(eWLAN_MODULE_PAL, eWLAN_PAL_TRACE_LEVEL_ERROR,
"RX packet alloc has problem, discard this frame, Len %d", allocLen);
vos_pkt_return_packet(pVosPkt);
return NULL;
}
}
break;
default:
WPAL_TRACE(eWLAN_MODULE_PAL, eWLAN_PAL_TRACE_LEVEL_ERROR,
" try to allocate unsupported packet type (%d)", pktType);
break;
}
if(VOS_IS_STATUS_SUCCESS(vosStatus))
{
pPkt = (wpt_packet *)pVosPkt;
}
return pPkt;
}/*wpalPacketAlloc*/
wpt_packet * wpalPacketAlloc(wpt_packet_type pktType, wpt_uint32 nPktSize,
wpalPacketLowPacketCB rxLowCB, void *usrData)
{
VOS_STATUS vosStatus = VOS_STATUS_E_FAILURE;
wpt_packet* pPkt = NULL;
vos_pkt_t* pVosPkt = NULL;
void* pData = NULL;
v_U16_t allocLen;
/* */
switch (pktType)
{
case eWLAN_PAL_PKT_TYPE_TX_802_11_MGMT:
vosStatus = vos_pkt_get_packet(&pVosPkt, VOS_PKT_TYPE_TX_802_11_MGMT,
nPktSize, 1, VOS_FALSE,
NULL, NULL /* */);
break;
case eWLAN_PAL_PKT_TYPE_RX_RAW:
/*
*/
wpalPacketAvailableCB = rxLowCB;
vosStatus = vos_pkt_get_packet(&pVosPkt, VOS_PKT_TYPE_RX_RAW,
nPktSize, 1, VOS_FALSE,
wpalPacketRXLowResourceCB, usrData);
#ifndef FEATURE_R33D
/* */
if( vosStatus == VOS_STATUS_SUCCESS )
{
wpalPacketAvailableCB = NULL;
vosStatus = vos_pkt_reserve_head_fast( pVosPkt, &pData, nPktSize );
}
#endif /* */
if((NULL != pVosPkt) && (VOS_STATUS_E_RESOURCES != vosStatus))
{
vos_pkt_get_packet_length(pVosPkt, &allocLen);
if (nPktSize != allocLen)
{
WPAL_TRACE(eWLAN_MODULE_PAL, eWLAN_PAL_TRACE_LEVEL_ERROR,
"RX packet alloc has problem, discard this frame, Len %d", allocLen);
vos_pkt_return_packet(pVosPkt);
return NULL;
}
}
break;
default:
WPAL_TRACE(eWLAN_MODULE_PAL, eWLAN_PAL_TRACE_LEVEL_ERROR,
" try to allocate unsupported packet type (%d)\n", pktType);
break;
}
if(VOS_IS_STATUS_SUCCESS(vosStatus))
{
pPkt = (wpt_packet *)pVosPkt;
}
return pPkt;
}/* */
