Release 4.11 net/irda/ircomm/ircomm_event.c

/*********************************************************************
 *
 * Filename:      ircomm_event.c
 * Version:       1.0
 * Description:   IrCOMM layer state machine
 * Status:        Stable
 * Author:        Dag Brattli <dagb@cs.uit.no>
 * Created at:    Sun Jun  6 20:33:11 1999
 * Modified at:   Sun Dec 12 13:44:32 1999
 * Modified by:   Dag Brattli <dagb@cs.uit.no>
 *
 *     Copyright (c) 1999 Dag Brattli, 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.
 *
 *     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, see <http://www.gnu.org/licenses/>.
 *
 ********************************************************************/

#include <linux/proc_fs.h>
#include <linux/init.h>

#include <net/irda/irda.h>
#include <net/irda/irlmp.h>
#include <net/irda/iriap.h>
#include <net/irda/irttp.h>
#include <net/irda/irias_object.h>

#include <net/irda/ircomm_core.h>
#include <net/irda/ircomm_event.h>

static int ircomm_state_idle(struct ircomm_cb *self, IRCOMM_EVENT event,
			     struct sk_buff *skb, struct ircomm_info *info);
static int ircomm_state_waiti(struct ircomm_cb *self, IRCOMM_EVENT event,
			      struct sk_buff *skb, struct ircomm_info *info);
static int ircomm_state_waitr(struct ircomm_cb *self, IRCOMM_EVENT event,
			      struct sk_buff *skb, struct ircomm_info *info);
static int ircomm_state_conn(struct ircomm_cb *self, IRCOMM_EVENT event,
			     struct sk_buff *skb, struct ircomm_info *info);


const char *const ircomm_state[] = {
	"IRCOMM_IDLE",
	"IRCOMM_WAITI",
	"IRCOMM_WAITR",
	"IRCOMM_CONN",
};


static const char *const ircomm_event[] __maybe_unused = {
	"IRCOMM_CONNECT_REQUEST",
	"IRCOMM_CONNECT_RESPONSE",
	"IRCOMM_TTP_CONNECT_INDICATION",
	"IRCOMM_LMP_CONNECT_INDICATION",
	"IRCOMM_TTP_CONNECT_CONFIRM",
	"IRCOMM_LMP_CONNECT_CONFIRM",

	"IRCOMM_LMP_DISCONNECT_INDICATION",
	"IRCOMM_TTP_DISCONNECT_INDICATION",
	"IRCOMM_DISCONNECT_REQUEST",

	"IRCOMM_TTP_DATA_INDICATION",
	"IRCOMM_LMP_DATA_INDICATION",
	"IRCOMM_DATA_REQUEST",
	"IRCOMM_CONTROL_REQUEST",
	"IRCOMM_CONTROL_INDICATION",
};


static int (*state[])(struct ircomm_cb *self, IRCOMM_EVENT event,
		      struct sk_buff *skb, struct ircomm_info *info) =
{
	ircomm_state_idle,
	ircomm_state_waiti,
	ircomm_state_waitr,
	ircomm_state_conn,
};

/*
 * Function ircomm_state_idle (self, event, skb)
 *
 *    IrCOMM is currently idle
 *
 */


static int ircomm_state_idle(struct ircomm_cb *self, IRCOMM_EVENT event,
			     struct sk_buff *skb, struct ircomm_info *info)
{
	int ret = 0;

	switch (event) {
	case IRCOMM_CONNECT_REQUEST:
		ircomm_next_state(self, IRCOMM_WAITI);
		ret = self->issue.connect_request(self, skb, info);
		break;
	case IRCOMM_TTP_CONNECT_INDICATION:
	case IRCOMM_LMP_CONNECT_INDICATION:
		ircomm_next_state(self, IRCOMM_WAITR);
		ircomm_connect_indication(self, skb, info);
		break;
	default:
		pr_debug("%s(), unknown event: %s\n", __func__ ,
			 ircomm_event[event]);
		ret = -EINVAL;
	}
	return ret;
}

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Linus Torvalds (pre-git)
98
93.33%
1
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Jean Tourrilhes
5
4.76%
2
40.00%
Harvey Harrison
1
0.95%
1
20.00%
Joe Perches
1
0.95%
1
20.00%
Total
105
100.00%
5
100.00%

/*
 * Function ircomm_state_waiti (self, event, skb)
 *
 *    The IrCOMM user has requested an IrCOMM connection to the remote
 *    device and is awaiting confirmation
 */


static int ircomm_state_waiti(struct ircomm_cb *self, IRCOMM_EVENT event,
			      struct sk_buff *skb, struct ircomm_info *info)
{
	int ret = 0;

	switch (event) {
	case IRCOMM_TTP_CONNECT_CONFIRM:
	case IRCOMM_LMP_CONNECT_CONFIRM:
		ircomm_next_state(self, IRCOMM_CONN);
		ircomm_connect_confirm(self, skb, info);
		break;
	case IRCOMM_TTP_DISCONNECT_INDICATION:
	case IRCOMM_LMP_DISCONNECT_INDICATION:
		ircomm_next_state(self, IRCOMM_IDLE);
		ircomm_disconnect_indication(self, skb, info);
		break;
	default:
		pr_debug("%s(), unknown event: %s\n", __func__ ,
			 ircomm_event[event]);
		ret = -EINVAL;
	}
	return ret;
}

Contributors
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CommitProp
Linus Torvalds (pre-git)
98
96.08%
1
25.00%
Jean Tourrilhes
2
1.96%
1
25.00%
Joe Perches
1
0.98%
1
25.00%
Harvey Harrison
1
0.98%
1
25.00%
Total
102
100.00%
4
100.00%

/*
 * Function ircomm_state_waitr (self, event, skb)
 *
 *    IrCOMM has received an incoming connection request and is awaiting
 *    response from the user
 */


static int ircomm_state_waitr(struct ircomm_cb *self, IRCOMM_EVENT event,
			      struct sk_buff *skb, struct ircomm_info *info)
{
	int ret = 0;

	switch (event) {
	case IRCOMM_CONNECT_RESPONSE:
		ircomm_next_state(self, IRCOMM_CONN);
		ret = self->issue.connect_response(self, skb);
		break;
	case IRCOMM_DISCONNECT_REQUEST:
		ircomm_next_state(self, IRCOMM_IDLE);
		ret = self->issue.disconnect_request(self, skb, info);
		break;
	case IRCOMM_TTP_DISCONNECT_INDICATION:
	case IRCOMM_LMP_DISCONNECT_INDICATION:
		ircomm_next_state(self, IRCOMM_IDLE);
		ircomm_disconnect_indication(self, skb, info);
		break;
	default:
		pr_debug("%s(), unknown event = %s\n", __func__ ,
			 ircomm_event[event]);
		ret = -EINVAL;
	}
	return ret;
}

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Linus Torvalds (pre-git)
125
96.90%
1
25.00%
Jean Tourrilhes
2
1.55%
1
25.00%
Harvey Harrison
1
0.78%
1
25.00%
Joe Perches
1
0.78%
1
25.00%
Total
129
100.00%
4
100.00%

/*
 * Function ircomm_state_conn (self, event, skb)
 *
 *    IrCOMM is connected to the peer IrCOMM device
 *
 */


static int ircomm_state_conn(struct ircomm_cb *self, IRCOMM_EVENT event,
			     struct sk_buff *skb, struct ircomm_info *info)
{
	int ret = 0;

	switch (event) {
	case IRCOMM_DATA_REQUEST:
		ret = self->issue.data_request(self, skb, 0);
		break;
	case IRCOMM_TTP_DATA_INDICATION:
		ircomm_process_data(self, skb);
		break;
	case IRCOMM_LMP_DATA_INDICATION:
		ircomm_data_indication(self, skb);
		break;
	case IRCOMM_CONTROL_REQUEST:
		/* Just send a separate frame for now */
		ret = self->issue.data_request(self, skb, skb->len);
		break;
	case IRCOMM_TTP_DISCONNECT_INDICATION:
	case IRCOMM_LMP_DISCONNECT_INDICATION:
		ircomm_next_state(self, IRCOMM_IDLE);
		ircomm_disconnect_indication(self, skb, info);
		break;
	case IRCOMM_DISCONNECT_REQUEST:
		ircomm_next_state(self, IRCOMM_IDLE);
		ret = self->issue.disconnect_request(self, skb, info);
		break;
	default:
		pr_debug("%s(), unknown event = %s\n", __func__ ,
			 ircomm_event[event]);
		ret = -EINVAL;
	}
	return ret;
}

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Linus Torvalds (pre-git)
164
97.62%
1
25.00%
Jean Tourrilhes
2
1.19%
1
25.00%
Harvey Harrison
1
0.60%
1
25.00%
Joe Perches
1
0.60%
1
25.00%
Total
168
100.00%
4
100.00%

/*
 * Function ircomm_do_event (self, event, skb)
 *
 *    Process event
 *
 */


int ircomm_do_event(struct ircomm_cb *self, IRCOMM_EVENT event,
		    struct sk_buff *skb, struct ircomm_info *info)
{
	pr_debug("%s: state=%s, event=%s\n", __func__ ,
		 ircomm_state[self->state], ircomm_event[event]);

	return (*state[self->state])(self, event, skb, info);
}

Contributors
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CommitProp
Linus Torvalds (pre-git)
58
93.55%
1
25.00%
Jean Tourrilhes
2
3.23%
1
25.00%
Joe Perches
1
1.61%
1
25.00%
Harvey Harrison
1
1.61%
1
25.00%
Total
62
100.00%
4
100.00%

/*
 * Function ircomm_next_state (self, state)
 *
 *    Switch state
 *
 */


void ircomm_next_state(struct ircomm_cb *self, IRCOMM_STATE state)
{
	self->state = state;

	pr_debug("%s: next state=%s, service type=%d\n", __func__ ,
		 ircomm_state[self->state], self->service_type);
}
Contributors
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CommitProp
Linus Torvalds (pre-git)
33
89.19%
1
25.00%
Jean Tourrilhes
2
5.41%
1
25.00%
Harvey Harrison
1
2.70%
1
25.00%
Joe Perches
1
2.70%
1
25.00%
Total
37
100.00%
4
100.00%

Overall Contributors
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Linus Torvalds (pre-git)
786
95.62%
1
9.09%
Jean Tourrilhes
15
1.82%
2
18.18%
Joe Perches
7
0.85%
2
18.18%
Harvey Harrison
6
0.73%
1
9.09%
Jan Engelhardt
4
0.49%
1
9.09%
Linus Torvalds
1
0.12%
1
9.09%
Adrian Bunk
1
0.12%
1
9.09%
Hideaki Yoshifuji / 吉藤英明
1
0.12%
1
9.09%
Jeff Kirsher
1
0.12%
1
9.09%
Total
822
100.00%
11
100.00%
Directory: net/irda/ircomm

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