Release 4.11 net/ax25/ax25_iface.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)
 */
#include <linux/errno.h>
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/in.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/string.h>
#include <linux/sockios.h>
#include <linux/net.h>
#include <linux/slab.h>
#include <net/ax25.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
#include <linux/skbuff.h>
#include <net/sock.h>
#include <linux/uaccess.h>
#include <linux/fcntl.h>
#include <linux/mm.h>
#include <linux/interrupt.h>


static struct ax25_protocol *protocol_list;
static DEFINE_RWLOCK(protocol_list_lock);

static HLIST_HEAD(ax25_linkfail_list);
static DEFINE_SPINLOCK(linkfail_lock);


static struct listen_struct {
	
struct listen_struct *next;
	
ax25_address  callsign;
	
struct net_device *dev;
} 
*listen_list = NULL;
static DEFINE_SPINLOCK(listen_lock);

/*
 * Do not register the internal protocols AX25_P_TEXT, AX25_P_SEGMENT,
 * AX25_P_IP or AX25_P_ARP ...
 */


void ax25_register_pid(struct ax25_protocol *ap)
{
	write_lock_bh(&protocol_list_lock);
	ap->next = protocol_list;
	protocol_list = ap;
	write_unlock_bh(&protocol_list_lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
20
62.50%
1
25.00%
Ralf Bächle
12
37.50%
3
75.00%
Total
32
100.00%
4
100.00%


EXPORT_SYMBOL_GPL(ax25_register_pid);



void ax25_protocol_release(unsigned int pid)
{
	struct ax25_protocol *protocol;

	write_lock_bh(&protocol_list_lock);
	protocol = protocol_list;
	if (protocol == NULL)
		goto out;

	if (protocol->pid == pid) {
		protocol_list = protocol->next;
		goto out;
	}

	while (protocol != NULL && protocol->next != NULL) {
		if (protocol->next->pid == pid) {
			protocol->next = protocol->next->next;
			goto out;
		}

		protocol = protocol->next;
	}
out:
	write_unlock_bh(&protocol_list_lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
80
76.19%
1
20.00%
Ralf Bächle
14
13.33%
3
60.00%
Ilpo Järvinen
11
10.48%
1
20.00%
Total
105
100.00%
5
100.00%


EXPORT_SYMBOL(ax25_protocol_release);



void ax25_linkfail_register(struct ax25_linkfail *lf)
{
	spin_lock_bh(&linkfail_lock);
	hlist_add_head(&lf->lf_node, &ax25_linkfail_list);
	spin_unlock_bh(&linkfail_lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Ralf Bächle
19
57.58%
3
75.00%
Linus Torvalds (pre-git)
14
42.42%
1
25.00%
Total
33
100.00%
4
100.00%


EXPORT_SYMBOL(ax25_linkfail_register);



void ax25_linkfail_release(struct ax25_linkfail *lf)
{
	spin_lock_bh(&linkfail_lock);
	hlist_del_init(&lf->lf_node);
	spin_unlock_bh(&linkfail_lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Ralf Bächle
16
53.33%
3
75.00%
Linus Torvalds (pre-git)
14
46.67%
1
25.00%
Total
30
100.00%
4
100.00%


EXPORT_SYMBOL(ax25_linkfail_release);



int ax25_listen_register(ax25_address *callsign, struct net_device *dev)
{
	struct listen_struct *listen;

	if (ax25_listen_mine(callsign, dev))
		return 0;

	if ((listen = kmalloc(sizeof(*listen), GFP_ATOMIC)) == NULL)
		return -ENOMEM;

	listen->callsign = *callsign;
	listen->dev      = dev;

	spin_lock_bh(&listen_lock);
	listen->next = listen_list;
	listen_list  = listen;
	spin_unlock_bh(&listen_lock);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
83
90.22%
2
40.00%
Ralf Bächle
9
9.78%
3
60.00%
Total
92
100.00%
5
100.00%


EXPORT_SYMBOL(ax25_listen_register);



void ax25_listen_release(ax25_address *callsign, struct net_device *dev)
{
	struct listen_struct *s, *listen;

	spin_lock_bh(&listen_lock);
	listen = listen_list;
	if (listen == NULL) {
		spin_unlock_bh(&listen_lock);
		return;
	}

	if (ax25cmp(&listen->callsign, callsign) == 0 && listen->dev == dev) {
		listen_list = listen->next;
		spin_unlock_bh(&listen_lock);
		kfree(listen);
		return;
	}

	while (listen != NULL && listen->next != NULL) {
		if (ax25cmp(&listen->next->callsign, callsign) == 0 && listen->next->dev == dev) {
			s = listen->next;
			listen->next = listen->next->next;
			spin_unlock_bh(&listen_lock);
			kfree(s);
			return;
		}

		listen = listen->next;
	}
	spin_unlock_bh(&listen_lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
140
83.83%
3
50.00%
Ralf Bächle
19
11.38%
2
33.33%
Jeroen Vreeken
8
4.79%
1
16.67%
Total
167
100.00%
6
100.00%


EXPORT_SYMBOL(ax25_listen_release);


int (*ax25_protocol_function(unsigned int pid))
(struct sk_buff *, ax25_cb *)
{
	int (*res)(struct sk_buff *, ax25_cb *) = NULL;
        struct ax25_protocol *protocol;

	read_lock(&protocol_list_lock);
	for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
		if (protocol->pid == pid) {
			res = protocol->func;
			break;
		}
	read_unlock(&protocol_list_lock);

	return res;
}

int 
ax25_listen_mine(ax25_address *callsign, struct net_device *dev)
{
	struct listen_struct *listen;

	spin_lock_bh(&listen_lock);
	for (listen = listen_list; listen != NULL; listen = listen->next)
		if (ax25cmp(&listen->callsign, callsign) == 0 &&
		    (listen->dev == dev || listen->dev == NULL)) {
			spin_unlock_bh(&listen_lock);
			return 1;
	}
	spin_unlock_bh(&listen_lock);

	return 0;
}



void ax25_link_failed(ax25_cb *ax25, int reason)
{
	struct ax25_linkfail *lf;

	spin_lock_bh(&linkfail_lock);
	hlist_for_each_entry(lf, &ax25_linkfail_list, lf_node)
		lf->func(ax25, reason);
	spin_unlock_bh(&linkfail_lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Ralf Bächle
24
52.17%
3
60.00%
Linus Torvalds (pre-git)
22
47.83%
2
40.00%
Total
46
100.00%
5
100.00%



int ax25_protocol_is_registered(unsigned int pid)
{
	struct ax25_protocol *protocol;
	int res = 0;

	read_lock_bh(&protocol_list_lock);
	for (protocol = protocol_list; protocol != NULL; protocol = protocol->next)
		if (protocol->pid == pid) {
			res = 1;
			break;
		}
	read_unlock_bh(&protocol_list_lock);

	return res;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
40
61.54%
1
25.00%
Ralf Bächle
25
38.46%
3
75.00%
Total
65
100.00%
4
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
600
67.95%
4
20.00%
Ralf Bächle
238
26.95%
11
55.00%
Jeroen Vreeken
18
2.04%
1
5.00%
Thomas Gleixner
12
1.36%
1
5.00%
Ilpo Järvinen
11
1.25%
1
5.00%
Tejun Heo
3
0.34%
1
5.00%
Linus Torvalds
1
0.11%
1
5.00%
Total
883
100.00%
20
100.00%
Directory: net/ax25

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.