1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
/*
*************************************************************************
* 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;
}
|
