Release 4.14 net/netrom/nr_timer.c

/*
 * 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.
 *
 * Copyright (C) Jonathan Naylor G4KLX (g4klx@g4klx.demon.co.uk)
 * Copyright (C) 2002 Ralf Baechle DO1GRB (ralf@gnu.org)
 */
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/kernel.h>
#include <linux/jiffies.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <net/ax25.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <net/tcp_states.h>
#include <linux/uaccess.h>
#include <linux/fcntl.h>
#include <linux/mm.h>
#include <linux/interrupt.h>
#include <net/netrom.h>

static void nr_heartbeat_expiry(unsigned long);
static void nr_t1timer_expiry(unsigned long);
static void nr_t2timer_expiry(unsigned long);
static void nr_t4timer_expiry(unsigned long);
static void nr_idletimer_expiry(unsigned long);



void nr_init_timers(struct sock *sk)
{
	struct nr_sock *nr = nr_sk(sk);

	setup_timer(&nr->t1timer, nr_t1timer_expiry, (unsigned long)sk);
	setup_timer(&nr->t2timer, nr_t2timer_expiry, (unsigned long)sk);
	setup_timer(&nr->t4timer, nr_t4timer_expiry, (unsigned long)sk);
	setup_timer(&nr->idletimer, nr_idletimer_expiry, (unsigned long)sk);

	/* initialized by sock_init_data */
	sk->sk_timer.data     = (unsigned long)sk;
	sk->sk_timer.function = &nr_heartbeat_expiry;
}

Contributors
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CommitProp
Linus Torvalds (pre-git)
40
37.74%
1
20.00%
Vinay K. Nallamothu
35
33.02%
1
20.00%
Pavel Emelyanov
20
18.87%
1
20.00%
David S. Miller
9
8.49%
1
20.00%
Ralf Bächle
2
1.89%
1
20.00%
Total
106
100.00%
5
100.00%



void nr_start_t1timer(struct sock *sk)
{
	struct nr_sock *nr = nr_sk(sk);

	mod_timer(&nr->t1timer, jiffies + nr->t1);
}

Contributors
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Tokens
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Commits
CommitProp
Vinay K. Nallamothu
25
73.53%
1
33.33%
Linus Torvalds (pre-git)
7
20.59%
1
33.33%
Ralf Bächle
2
5.88%
1
33.33%
Total
34
100.00%
3
100.00%



void nr_start_t2timer(struct sock *sk)
{
	struct nr_sock *nr = nr_sk(sk);

	mod_timer(&nr->t2timer, jiffies + nr->t2);
}

Contributors
Person
Tokens
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CommitProp
Linus Torvalds (pre-git)
15
44.12%
1
25.00%
Vinay K. Nallamothu
9
26.47%
1
25.00%
David S. Miller
8
23.53%
1
25.00%
Ralf Bächle
2
5.88%
1
25.00%
Total
34
100.00%
4
100.00%



void nr_start_t4timer(struct sock *sk)
{
	struct nr_sock *nr = nr_sk(sk);

	mod_timer(&nr->t4timer, jiffies + nr->t4);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Vinay K. Nallamothu
19
55.88%
1
33.33%
Linus Torvalds (pre-git)
13
38.24%
1
33.33%
Ralf Bächle
2
5.88%
1
33.33%
Total
34
100.00%
3
100.00%



void nr_start_idletimer(struct sock *sk)
{
	struct nr_sock *nr = nr_sk(sk);

	if (nr->idle > 0)
		mod_timer(&nr->idletimer, jiffies + nr->idle);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
29
69.05%
1
25.00%
David S. Miller
8
19.05%
1
25.00%
Vinay K. Nallamothu
3
7.14%
1
25.00%
Ralf Bächle
2
4.76%
1
25.00%
Total
42
100.00%
4
100.00%



void nr_start_heartbeat(struct sock *sk)
{
	mod_timer(&sk->sk_timer, jiffies + 5 * HZ);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
21
87.50%
1
33.33%
Vinay K. Nallamothu
2
8.33%
1
33.33%
Arnaldo Carvalho de Melo
1
4.17%
1
33.33%
Total
24
100.00%
3
100.00%



void nr_stop_t1timer(struct sock *sk)
{
	del_timer(&nr_sk(sk)->t1timer);
}

Contributors
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Tokens
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CommitProp
Linus Torvalds (pre-git)
18
85.71%
1
50.00%
David S. Miller
3
14.29%
1
50.00%
Total
21
100.00%
2
100.00%



void nr_stop_t2timer(struct sock *sk)
{
	del_timer(&nr_sk(sk)->t2timer);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
18
85.71%
2
66.67%
David S. Miller
3
14.29%
1
33.33%
Total
21
100.00%
3
100.00%



void nr_stop_t4timer(struct sock *sk)
{
	del_timer(&nr_sk(sk)->t4timer);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
18
85.71%
2
66.67%
David S. Miller
3
14.29%
1
33.33%
Total
21
100.00%
3
100.00%



void nr_stop_idletimer(struct sock *sk)
{
	del_timer(&nr_sk(sk)->idletimer);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
18
85.71%
2
66.67%
David S. Miller
3
14.29%
1
33.33%
Total
21
100.00%
3
100.00%



void nr_stop_heartbeat(struct sock *sk)
{
	del_timer(&sk->sk_timer);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
17
94.44%
2
66.67%
Arnaldo Carvalho de Melo
1
5.56%
1
33.33%
Total
18
100.00%
3
100.00%



int nr_t1timer_running(struct sock *sk)
{
	return timer_pending(&nr_sk(sk)->t1timer);
}

Contributors
Person
Tokens
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CommitProp
Linus Torvalds (pre-git)
19
86.36%
2
66.67%
David S. Miller
3
13.64%
1
33.33%
Total
22
100.00%
3
100.00%



static void nr_heartbeat_expiry(unsigned long param)
{
	struct sock *sk = (struct sock *)param;
	struct nr_sock *nr = nr_sk(sk);

	bh_lock_sock(sk);
	switch (nr->state) {
	case NR_STATE_0:
		/* Magic here: If we listen() and a new link dies before it
                   is accepted() it isn't 'dead' so doesn't get removed. */
		if (sock_flag(sk, SOCK_DESTROY) ||
		    (sk->sk_state == TCP_LISTEN && sock_flag(sk, SOCK_DEAD))) {
			sock_hold(sk);
			bh_unlock_sock(sk);
			nr_destroy_socket(sk);
			sock_put(sk);
			return;
		}
		break;

	case NR_STATE_3:
		/*
                 * Check for the state of the receive buffer.
                 */
		if (atomic_read(&sk->sk_rmem_alloc) < (sk->sk_rcvbuf / 2) &&
		    (nr->condition & NR_COND_OWN_RX_BUSY)) {
			nr->condition &= ~NR_COND_OWN_RX_BUSY;
			nr->condition &= ~NR_COND_ACK_PENDING;
			nr->vl         = nr->vr;
			nr_write_internal(sk, NR_INFOACK);
			break;
		}
		break;
	}

	nr_start_heartbeat(sk);
	bh_unlock_sock(sk);
}

Contributors
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Tokens
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CommitProp
Linus Torvalds (pre-git)
119
70.00%
5
35.71%
Ralf Bächle
16
9.41%
4
28.57%
Jeroen Vreeken
14
8.24%
1
7.14%
Arnaldo Carvalho de Melo
9
5.29%
2
14.29%
David S. Miller
8
4.71%
1
7.14%
James Morris
4
2.35%
1
7.14%
Total
170
100.00%
14
100.00%



static void nr_t2timer_expiry(unsigned long param)
{
	struct sock *sk = (struct sock *)param;
	struct nr_sock *nr = nr_sk(sk);

	bh_lock_sock(sk);
	if (nr->condition & NR_COND_ACK_PENDING) {
		nr->condition &= ~NR_COND_ACK_PENDING;
		nr_enquiry_response(sk);
	}
	bh_unlock_sock(sk);
}

Contributors
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CommitProp
Linus Torvalds (pre-git)
44
68.75%
3
50.00%
Ralf Bächle
12
18.75%
2
33.33%
David S. Miller
8
12.50%
1
16.67%
Total
64
100.00%
6
100.00%



static void nr_t4timer_expiry(unsigned long param)
{
	struct sock *sk = (struct sock *)param;

	bh_lock_sock(sk);
	nr_sk(sk)->condition &= ~NR_COND_PEER_RX_BUSY;
	bh_unlock_sock(sk);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
29
69.05%
2
50.00%
Ralf Bächle
10
23.81%
1
25.00%
David S. Miller
3
7.14%
1
25.00%
Total
42
100.00%
4
100.00%



static void nr_idletimer_expiry(unsigned long param)
{
	struct sock *sk = (struct sock *)param;
	struct nr_sock *nr = nr_sk(sk);

	bh_lock_sock(sk);

	nr_clear_queues(sk);

	nr->n2count = 0;
	nr_write_internal(sk, NR_DISCREQ);
	nr->state = NR_STATE_2;

	nr_start_t1timer(sk);
	nr_stop_t2timer(sk);
	nr_stop_t4timer(sk);

	sk->sk_state     = TCP_CLOSE;
	sk->sk_err       = 0;
	sk->sk_shutdown |= SEND_SHUTDOWN;

	if (!sock_flag(sk, SOCK_DEAD)) {
		sk->sk_state_change(sk);
		sock_set_flag(sk, SOCK_DEAD);
	}
	bh_unlock_sock(sk);
}

Contributors
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Tokens
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CommitProp
Linus Torvalds (pre-git)
89
71.20%
3
33.33%
Arnaldo Carvalho de Melo
12
9.60%
2
22.22%
Ralf Bächle
12
9.60%
2
22.22%
David S. Miller
8
6.40%
1
11.11%
James Morris
4
3.20%
1
11.11%
Total
125
100.00%
9
100.00%



static void nr_t1timer_expiry(unsigned long param)
{
	struct sock *sk = (struct sock *)param;
	struct nr_sock *nr = nr_sk(sk);

	bh_lock_sock(sk);
	switch (nr->state) {
	case NR_STATE_1:
		if (nr->n2count == nr->n2) {
			nr_disconnect(sk, ETIMEDOUT);
			bh_unlock_sock(sk);
			return;
		} else {
			nr->n2count++;
			nr_write_internal(sk, NR_CONNREQ);
		}
		break;

	case NR_STATE_2:
		if (nr->n2count == nr->n2) {
			nr_disconnect(sk, ETIMEDOUT);
			bh_unlock_sock(sk);
			return;
		} else {
			nr->n2count++;
			nr_write_internal(sk, NR_DISCREQ);
		}
		break;

	case NR_STATE_3:
		if (nr->n2count == nr->n2) {
			nr_disconnect(sk, ETIMEDOUT);
			bh_unlock_sock(sk);
			return;
		} else {
			nr->n2count++;
			nr_requeue_frames(sk);
		}
		break;
	}

	nr_start_t1timer(sk);
	bh_unlock_sock(sk);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
150
81.08%
3
42.86%
Jeroen Vreeken
15
8.11%
1
14.29%
Ralf Bächle
12
6.49%
2
28.57%
David S. Miller
8
4.32%
1
14.29%
Total
185
100.00%
7
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
762
70.04%
7
33.33%
Vinay K. Nallamothu
93
8.55%
1
4.76%
David S. Miller
77
7.08%
1
4.76%
Ralf Bächle
73
6.71%
4
19.05%
Jeroen Vreeken
29
2.67%
1
4.76%
Arnaldo Carvalho de Melo
24
2.21%
3
14.29%
Pavel Emelyanov
20
1.84%
1
4.76%
James Morris
8
0.74%
1
4.76%
Fabian Frederick
1
0.09%
1
4.76%
Rusty Russell
1
0.09%
1
4.76%
Total
1088
100.00%
21
100.00%
Directory: net/netrom

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