drivers/staging/winbond/mlmetxrx.c

/* ============================================================================
  Module Name:
    MLMETxRx.C

  Description:
    The interface between MDS (MAC Data Service) and MLME.

  Revision History:
  --------------------------------------------------------------------------
		200209      UN20 Jennifer Xu
		Initial Release
		20021108    PD43 Austin Liu
		20030117    PD43 Austin Liu
		Deleted MLMEReturnPacket and MLMEProcThread()

  Copyright (c) 1996-2002 Winbond Electronics Corp. All Rights Reserved.
============================================================================ */
#include "sysdef.h"

#include "mds_f.h"

/* ============================================================================= */
u8 MLMESendFrame(struct wbsoft_priv *adapter, u8 *pMMPDU, u16 len, u8 DataType)
/*	DataType : FRAME_TYPE_802_11_MANAGEMENT, FRAME_TYPE_802_11_MANAGEMENT_CHALLENGE,
				FRAME_TYPE_802_11_DATA */
{
	if (adapter->sMlmeFrame.IsInUsed != PACKET_FREE_TO_USE) {
		adapter->sMlmeFrame.wNumTxMMPDUDiscarded++;
		return false;
	}
	adapter->sMlmeFrame.IsInUsed = PACKET_COME_FROM_MLME;

	/* Keep information for sending */
	adapter->sMlmeFrame.pMMPDU = pMMPDU;
	adapter->sMlmeFrame.DataType = DataType;
	/* len must be the last setting due to QUERY_SIZE_SECOND of Mds */
	adapter->sMlmeFrame.len = len;
	adapter->sMlmeFrame.wNumTxMMPDU++;

	/* H/W will enter power save by set the register. S/W don't send null frame
	with PWRMgt bit enbled to enter power save now. */

	/* Transmit NDIS packet */
	Mds_Tx(adapter);
	return true;
}

void MLME_GetNextPacket(struct wbsoft_priv *adapter, struct wb35_descriptor *desc)
{
	desc->InternalUsed = desc->buffer_start_index + desc->buffer_number;
	desc->InternalUsed %= MAX_DESCRIPTOR_BUFFER_INDEX;
	desc->buffer_address[desc->InternalUsed] = adapter->sMlmeFrame.pMMPDU;
	desc->buffer_size[desc->InternalUsed] = adapter->sMlmeFrame.len;
	desc->buffer_total_size += adapter->sMlmeFrame.len;
	desc->buffer_number++;
	desc->Type = adapter->sMlmeFrame.DataType;
}

static void MLMEfreeMMPDUBuffer(struct wbsoft_priv *adapter, s8 *pData)
{
	int i;

	/* Reclaim the data buffer */
	for (i = 0; i < MAX_NUM_TX_MMPDU; i++) {
		if (pData == (s8 *)&(adapter->sMlmeFrame.TxMMPDU[i]))
			break;
	}
	if (adapter->sMlmeFrame.TxMMPDUInUse[i])
		adapter->sMlmeFrame.TxMMPDUInUse[i] = false;
	else  {
		/* Something wrong
		 PD43 Add debug code here??? */
	}
}

void
MLME_SendComplete(struct wbsoft_priv *adapter, u8 PacketID, unsigned char SendOK)
{
	MLME_TXCALLBACK	TxCallback;

    /* Reclaim the data buffer */
	adapter->sMlmeFrame.len = 0;
	MLMEfreeMMPDUBuffer(adapter, adapter->sMlmeFrame.pMMPDU);


	TxCallback.bResult = MLME_SUCCESS;

	/* Return resource */
	adapter->sMlmeFrame.IsInUsed = PACKET_FREE_TO_USE;
}