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/*
*************************************************************************
* Ralink Tech Inc.
* 5F., No.36, Taiyuan St., Jhubei City,
* Hsinchu County 302,
* Taiwan, R.O.C.
*
* (c) Copyright 2002-2007, Ralink Technology, Inc.
*
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* 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. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
* *
*************************************************************************
Module Name:
mlme_ex.c
Abstract:
Miniport generic portion header file
Revision History:
Who When What
-------- ---------- ----------------------------------------------
Fonchi 2007-06-25 Extend original mlme APIs to support multi-entries
*/
#include "../rt_config.h"
#include "../mlme_ex_def.h"
//#include <stdarg.h>
// ===========================================================================================
// state_machine
// ===========================================================================================
/*! \brief Initialize the state machine.
* \param *S pointer to the state machine
* \param Trans State machine transition function
* \param StNr number of states
* \param MsgNr number of messages
* \param DefFunc default function, when there is invalid state/message combination
* \param InitState initial state of the state machine
* \param Base StateMachine base, internal use only
* \pre p_sm should be a legal pointer
* \post
*/
VOID StateMachineInitEx(
IN STATE_MACHINE_EX *S,
IN STATE_MACHINE_FUNC_EX Trans[],
IN ULONG StNr,
IN ULONG MsgNr,
IN STATE_MACHINE_FUNC_EX DefFunc,
IN ULONG InitState,
IN ULONG Base)
{
ULONG i, j;
// set number of states and messages
S->NrState = StNr;
S->NrMsg = MsgNr;
S->Base = Base;
S->TransFunc = Trans;
// init all state transition to default function
for (i = 0; i < StNr; i++)
{
for (j = 0; j < MsgNr; j++)
{
S->TransFunc[i * MsgNr + j] = DefFunc;
}
}
// set the starting state
S->CurrState = InitState;
return;
}
/*! \brief This function fills in the function pointer into the cell in the state machine
* \param *S pointer to the state machine
* \param St state
* \param Msg incoming message
* \param f the function to be executed when (state, message) combination occurs at the state machine
* \pre *S should be a legal pointer to the state machine, st, msg, should be all within the range, Base should be set in the initial state
* \post
*/
VOID StateMachineSetActionEx(
IN STATE_MACHINE_EX *S,
IN ULONG St,
IN ULONG Msg,
IN STATE_MACHINE_FUNC_EX Func)
{
ULONG MsgIdx;
MsgIdx = Msg - S->Base;
if (St < S->NrState && MsgIdx < S->NrMsg)
{
// boundary checking before setting the action
S->TransFunc[St * S->NrMsg + MsgIdx] = Func;
}
return;
}
/*! \brief This function does the state transition
* \param *Adapter the NIC adapter pointer
* \param *S the state machine
* \param *Elem the message to be executed
* \return None
*/
VOID StateMachinePerformActionEx(
IN PRTMP_ADAPTER pAd,
IN STATE_MACHINE_EX *S,
IN MLME_QUEUE_ELEM *Elem,
USHORT Idx,
PULONG pCurrState)
{
if (S->TransFunc[(*pCurrState) * S->NrMsg + Elem->MsgType - S->Base])
(*(S->TransFunc[(*pCurrState) * S->NrMsg + Elem->MsgType - S->Base]))(pAd, Elem, pCurrState, Idx);
return;
}
/*! \brief Enqueue a message for other threads, if they want to send messages to MLME thread
* \param *Queue The MLME Queue
* \param Machine The State Machine Id
* \param MsgType The Message Type
* \param MsgLen The Message length
* \param *Msg The message pointer
* \return TRUE if enqueue is successful, FALSE if the queue is full
* \pre
* \post
* \note The message has to be initialized
*/
BOOLEAN MlmeEnqueueEx(
IN PRTMP_ADAPTER pAd,
IN ULONG Machine,
IN ULONG MsgType,
IN ULONG MsgLen,
IN VOID *Msg,
IN USHORT Idx)
{
INT Tail;
MLME_QUEUE *Queue = (MLME_QUEUE *)&pAd->Mlme.Queue;
// Do nothing if the driver is starting halt state.
// This might happen when timer already been fired before cancel timer with mlmehalt
if (RTMP_TEST_FLAG(pAd, fRTMP_ADAPTER_HALT_IN_PROGRESS))
return FALSE;
// First check the size, it MUST not exceed the mlme queue size
if (MsgLen > MAX_LEN_OF_MLME_BUFFER)
{
DBGPRINT_ERR(("MlmeEnqueueEx: msg too large, size = %ld \n", MsgLen));
return FALSE;
}
if (MlmeQueueFull(Queue))
{
return FALSE;
}
RTMP_SEM_LOCK(&Queue->Lock);
Tail = Queue->Tail;
Queue->Tail++;
Queue->Num++;
if (Queue->Tail == MAX_LEN_OF_MLME_QUEUE)
{
Queue->Tail = 0;
}
Queue->Entry[Tail].Occupied = TRUE;
Queue->Entry[Tail].Machine = Machine;
Queue->Entry[Tail].MsgType = MsgType;
Queue->Entry[Tail].MsgLen = MsgLen;
Queue->Entry[Tail].Idx = Idx;
if (Msg != NULL)
NdisMoveMemory(Queue->Entry[Tail].Msg, Msg, MsgLen);
RTMP_SEM_UNLOCK(&Queue->Lock);
return TRUE;
}
/*
==========================================================================
Description:
The drop function, when machine executes this, the message is simply
ignored. This function does nothing, the message is freed in
StateMachinePerformAction()
==========================================================================
*/
VOID DropEx(
IN PRTMP_ADAPTER pAd,
IN MLME_QUEUE_ELEM *Elem,
PULONG pCurrState,
USHORT Idx)
{
return;
}
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