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
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
/*********************************************************************
*
* Filename: irlan_provider_event.c
* Version: 0.9
* Description: IrLAN provider state machine)
* Status: Experimental.
* Author: Dag Brattli <dagb@cs.uit.no>
* Created at: Sun Aug 31 20:14:37 1997
* Modified at: Sat Oct 30 12:52:41 1999
* Modified by: Dag Brattli <dagb@cs.uit.no>
*
* Copyright (c) 1998-1999 Dag Brattli <dagb@cs.uit.no>, All Rights Reserved.
*
* 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.
*
* Neither Dag Brattli nor University of Tromsø admit liability nor
* provide warranty for any of this software. This material is
* provided "AS-IS" and at no charge.
*
********************************************************************/
#include <net/irda/irda.h>
#include <net/irda/iriap.h>
#include <net/irda/irlmp.h>
#include <net/irda/irttp.h>
#include <net/irda/irlan_provider.h>
#include <net/irda/irlan_event.h>
static int irlan_provider_state_idle(struct irlan_cb *self, IRLAN_EVENT event,
struct sk_buff *skb);
static int irlan_provider_state_info(struct irlan_cb *self, IRLAN_EVENT event,
struct sk_buff *skb);
static int irlan_provider_state_open(struct irlan_cb *self, IRLAN_EVENT event,
struct sk_buff *skb);
static int irlan_provider_state_data(struct irlan_cb *self, IRLAN_EVENT event,
struct sk_buff *skb);
static int (*state[])(struct irlan_cb *self, IRLAN_EVENT event,
struct sk_buff *skb) =
{
irlan_provider_state_idle,
NULL, /* Query */
NULL, /* Info */
irlan_provider_state_info,
NULL, /* Media */
irlan_provider_state_open,
NULL, /* Wait */
NULL, /* Arb */
irlan_provider_state_data,
NULL, /* Close */
NULL, /* Sync */
};
void irlan_do_provider_event(struct irlan_cb *self, IRLAN_EVENT event,
struct sk_buff *skb)
{
IRDA_ASSERT(*state[ self->provider.state] != NULL, return;);
(*state[self->provider.state]) (self, event, skb);
}
/*
* Function irlan_provider_state_idle (event, skb, info)
*
* IDLE, We are waiting for an indication that there is a provider
* available.
*/
static int irlan_provider_state_idle(struct irlan_cb *self, IRLAN_EVENT event,
struct sk_buff *skb)
{
IRDA_DEBUG(4, "%s()\n", __FUNCTION__ );
IRDA_ASSERT(self != NULL, return -1;);
switch(event) {
case IRLAN_CONNECT_INDICATION:
irlan_provider_connect_response( self, self->provider.tsap_ctrl);
irlan_next_provider_state( self, IRLAN_INFO);
break;
default:
IRDA_DEBUG(4, "%s(), Unknown event %d\n", __FUNCTION__ , event);
break;
}
if (skb)
dev_kfree_skb(skb);
return 0;
}
/*
* Function irlan_provider_state_info (self, event, skb, info)
*
* INFO, We have issued a GetInfo command and is awaiting a reply.
*/
static int irlan_provider_state_info(struct irlan_cb *self, IRLAN_EVENT event,
struct sk_buff *skb)
{
int ret;
IRDA_DEBUG(4, "%s()\n", __FUNCTION__ );
IRDA_ASSERT(self != NULL, return -1;);
switch(event) {
case IRLAN_GET_INFO_CMD:
/* Be sure to use 802.3 in case of peer mode */
if (self->provider.access_type == ACCESS_PEER) {
self->media = MEDIA_802_3;
/* Check if client has started yet */
if (self->client.state == IRLAN_IDLE) {
/* This should get the client going */
irlmp_discovery_request(8);
}
}
irlan_provider_send_reply(self, CMD_GET_PROVIDER_INFO,
RSP_SUCCESS);
/* Keep state */
break;
case IRLAN_GET_MEDIA_CMD:
irlan_provider_send_reply(self, CMD_GET_MEDIA_CHAR,
RSP_SUCCESS);
/* Keep state */
break;
case IRLAN_OPEN_DATA_CMD:
ret = irlan_parse_open_data_cmd(self, skb);
if (self->provider.access_type == ACCESS_PEER) {
/* FIXME: make use of random functions! */
self->provider.send_arb_val = (jiffies & 0xffff);
}
irlan_provider_send_reply(self, CMD_OPEN_DATA_CHANNEL, ret);
if (ret == RSP_SUCCESS) {
irlan_next_provider_state(self, IRLAN_OPEN);
/* Signal client that we are now open */
irlan_do_client_event(self, IRLAN_PROVIDER_SIGNAL, NULL);
}
break;
case IRLAN_LMP_DISCONNECT: /* FALLTHROUGH */
case IRLAN_LAP_DISCONNECT:
irlan_next_provider_state(self, IRLAN_IDLE);
break;
default:
IRDA_DEBUG( 0, "%s(), Unknown event %d\n", __FUNCTION__ , event);
break;
}
if (skb)
dev_kfree_skb(skb);
return 0;
}
/*
* Function irlan_provider_state_open (self, event, skb, info)
*
* OPEN, The client has issued a OpenData command and is awaiting a
* reply
*
*/
static int irlan_provider_state_open(struct irlan_cb *self, IRLAN_EVENT event,
struct sk_buff *skb)
{
IRDA_DEBUG(4, "%s()\n", __FUNCTION__ );
IRDA_ASSERT(self != NULL, return -1;);
switch(event) {
case IRLAN_FILTER_CONFIG_CMD:
irlan_provider_parse_command(self, CMD_FILTER_OPERATION, skb);
irlan_provider_send_reply(self, CMD_FILTER_OPERATION,
RSP_SUCCESS);
/* Keep state */
break;
case IRLAN_DATA_CONNECT_INDICATION:
irlan_next_provider_state(self, IRLAN_DATA);
irlan_provider_connect_response(self, self->tsap_data);
break;
case IRLAN_LMP_DISCONNECT: /* FALLTHROUGH */
case IRLAN_LAP_DISCONNECT:
irlan_next_provider_state(self, IRLAN_IDLE);
break;
default:
IRDA_DEBUG(2, "%s(), Unknown event %d\n", __FUNCTION__ , event);
break;
}
if (skb)
dev_kfree_skb(skb);
return 0;
}
/*
* Function irlan_provider_state_data (self, event, skb, info)
*
* DATA, The data channel is connected, allowing data transfers between
* the local and remote machines.
*
*/
static int irlan_provider_state_data(struct irlan_cb *self, IRLAN_EVENT event,
struct sk_buff *skb)
{
IRDA_DEBUG(4, "%s()\n", __FUNCTION__ );
IRDA_ASSERT(self != NULL, return -1;);
IRDA_ASSERT(self->magic == IRLAN_MAGIC, return -1;);
switch(event) {
case IRLAN_FILTER_CONFIG_CMD:
irlan_provider_parse_command(self, CMD_FILTER_OPERATION, skb);
irlan_provider_send_reply(self, CMD_FILTER_OPERATION,
RSP_SUCCESS);
break;
case IRLAN_LMP_DISCONNECT: /* FALLTHROUGH */
case IRLAN_LAP_DISCONNECT:
irlan_next_provider_state(self, IRLAN_IDLE);
break;
default:
IRDA_DEBUG( 0, "%s(), Unknown event %d\n", __FUNCTION__ , event);
break;
}
if (skb)
dev_kfree_skb(skb);
return 0;
}
|
