1 /*********************************************************************
3 * Filename: ircomm_event.c
5 * Description: IrCOMM layer state machine
7 * Author: Dag Brattli <dagb@cs.uit.no>
8 * Created at: Sun Jun 6 20:33:11 1999
9 * Modified at: Sun Dec 12 13:44:32 1999
10 * Modified by: Dag Brattli <dagb@cs.uit.no>
12 * Copyright (c) 1999 Dag Brattli, All Rights Reserved.
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License as
16 * published by the Free Software Foundation; either version 2 of
17 * the License, or (at your option) any later version.
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
29 ********************************************************************/
31 #include <linux/sched.h>
32 #include <linux/proc_fs.h>
33 #include <linux/init.h>
35 #include <net/irda/irda.h>
36 #include <net/irda/irlmp.h>
37 #include <net/irda/iriap.h>
38 #include <net/irda/irttp.h>
39 #include <net/irda/irias_object.h>
41 #include <net/irda/ircomm_core.h>
42 #include <net/irda/ircomm_event.h>
44 static int ircomm_state_idle(struct ircomm_cb
*self
, IRCOMM_EVENT event
,
45 struct sk_buff
*skb
, struct ircomm_info
*info
);
46 static int ircomm_state_waiti(struct ircomm_cb
*self
, IRCOMM_EVENT event
,
47 struct sk_buff
*skb
, struct ircomm_info
*info
);
48 static int ircomm_state_waitr(struct ircomm_cb
*self
, IRCOMM_EVENT event
,
49 struct sk_buff
*skb
, struct ircomm_info
*info
);
50 static int ircomm_state_conn(struct ircomm_cb
*self
, IRCOMM_EVENT event
,
51 struct sk_buff
*skb
, struct ircomm_info
*info
);
53 char *ircomm_state
[] = {
60 char *ircomm_event
[] = {
61 "IRCOMM_CONNECT_REQUEST",
62 "IRCOMM_CONNECT_RESPONSE",
63 "IRCOMM_TTP_CONNECT_INDICATION",
64 "IRCOMM_LMP_CONNECT_INDICATION",
65 "IRCOMM_TTP_CONNECT_CONFIRM",
66 "IRCOMM_LMP_CONNECT_CONFIRM",
68 "IRCOMM_LMP_DISCONNECT_INDICATION",
69 "IRCOMM_TTP_DISCONNECT_INDICATION",
70 "IRCOMM_DISCONNECT_REQUEST",
72 "IRCOMM_TTP_DATA_INDICATION",
73 "IRCOMM_LMP_DATA_INDICATION",
74 "IRCOMM_DATA_REQUEST",
75 "IRCOMM_CONTROL_REQUEST",
76 "IRCOMM_CONTROL_INDICATION",
79 static int (*state
[])(struct ircomm_cb
*self
, IRCOMM_EVENT event
,
80 struct sk_buff
*skb
, struct ircomm_info
*info
) =
89 * Function ircomm_state_idle (self, event, skb)
91 * IrCOMM is currently idle
94 static int ircomm_state_idle(struct ircomm_cb
*self
, IRCOMM_EVENT event
,
95 struct sk_buff
*skb
, struct ircomm_info
*info
)
100 case IRCOMM_CONNECT_REQUEST
:
101 ircomm_next_state(self
, IRCOMM_WAITI
);
102 ret
= self
->issue
.connect_request(self
, skb
, info
);
104 case IRCOMM_TTP_CONNECT_INDICATION
:
105 case IRCOMM_LMP_CONNECT_INDICATION
:
106 ircomm_next_state(self
, IRCOMM_WAITR
);
107 ircomm_connect_indication(self
, skb
, info
);
110 IRDA_DEBUG(4, "%s(), unknown event: %s\n", __FUNCTION__
,
111 ircomm_event
[event
]);
118 * Function ircomm_state_waiti (self, event, skb)
120 * The IrCOMM user has requested an IrCOMM connection to the remote
121 * device and is awaiting confirmation
123 static int ircomm_state_waiti(struct ircomm_cb
*self
, IRCOMM_EVENT event
,
124 struct sk_buff
*skb
, struct ircomm_info
*info
)
129 case IRCOMM_TTP_CONNECT_CONFIRM
:
130 case IRCOMM_LMP_CONNECT_CONFIRM
:
131 ircomm_next_state(self
, IRCOMM_CONN
);
132 ircomm_connect_confirm(self
, skb
, info
);
134 case IRCOMM_TTP_DISCONNECT_INDICATION
:
135 case IRCOMM_LMP_DISCONNECT_INDICATION
:
136 ircomm_next_state(self
, IRCOMM_IDLE
);
137 ircomm_disconnect_indication(self
, skb
, info
);
140 IRDA_DEBUG(0, "%s(), unknown event: %s\n", __FUNCTION__
,
141 ircomm_event
[event
]);
148 * Function ircomm_state_waitr (self, event, skb)
150 * IrCOMM has received an incoming connection request and is awaiting
151 * response from the user
153 static int ircomm_state_waitr(struct ircomm_cb
*self
, IRCOMM_EVENT event
,
154 struct sk_buff
*skb
, struct ircomm_info
*info
)
159 case IRCOMM_CONNECT_RESPONSE
:
160 ircomm_next_state(self
, IRCOMM_CONN
);
161 ret
= self
->issue
.connect_response(self
, skb
);
163 case IRCOMM_DISCONNECT_REQUEST
:
164 ircomm_next_state(self
, IRCOMM_IDLE
);
165 ret
= self
->issue
.disconnect_request(self
, skb
, info
);
167 case IRCOMM_TTP_DISCONNECT_INDICATION
:
168 case IRCOMM_LMP_DISCONNECT_INDICATION
:
169 ircomm_next_state(self
, IRCOMM_IDLE
);
170 ircomm_disconnect_indication(self
, skb
, info
);
173 IRDA_DEBUG(0, "%s(), unknown event = %s\n", __FUNCTION__
,
174 ircomm_event
[event
]);
181 * Function ircomm_state_conn (self, event, skb)
183 * IrCOMM is connected to the peer IrCOMM device
186 static int ircomm_state_conn(struct ircomm_cb
*self
, IRCOMM_EVENT event
,
187 struct sk_buff
*skb
, struct ircomm_info
*info
)
192 case IRCOMM_DATA_REQUEST
:
193 ret
= self
->issue
.data_request(self
, skb
, 0);
195 case IRCOMM_TTP_DATA_INDICATION
:
196 ircomm_process_data(self
, skb
);
198 case IRCOMM_LMP_DATA_INDICATION
:
199 ircomm_data_indication(self
, skb
);
201 case IRCOMM_CONTROL_REQUEST
:
202 /* Just send a separate frame for now */
203 ret
= self
->issue
.data_request(self
, skb
, skb
->len
);
205 case IRCOMM_TTP_DISCONNECT_INDICATION
:
206 case IRCOMM_LMP_DISCONNECT_INDICATION
:
207 ircomm_next_state(self
, IRCOMM_IDLE
);
208 ircomm_disconnect_indication(self
, skb
, info
);
210 case IRCOMM_DISCONNECT_REQUEST
:
211 ircomm_next_state(self
, IRCOMM_IDLE
);
212 ret
= self
->issue
.disconnect_request(self
, skb
, info
);
215 IRDA_DEBUG(0, "%s(), unknown event = %s\n", __FUNCTION__
,
216 ircomm_event
[event
]);
223 * Function ircomm_do_event (self, event, skb)
228 int ircomm_do_event(struct ircomm_cb
*self
, IRCOMM_EVENT event
,
229 struct sk_buff
*skb
, struct ircomm_info
*info
)
231 IRDA_DEBUG(4, "%s: state=%s, event=%s\n", __FUNCTION__
,
232 ircomm_state
[self
->state
], ircomm_event
[event
]);
234 return (*state
[self
->state
])(self
, event
, skb
, info
);
238 * Function ircomm_next_state (self, state)
243 void ircomm_next_state(struct ircomm_cb
*self
, IRCOMM_STATE state
)
247 IRDA_DEBUG(4, "%s: next state=%s, service type=%d\n", __FUNCTION__
,
248 ircomm_state
[self
->state
], self
->service_type
);