Release 4.11 drivers/net/ppp/pppox.c

/** -*- linux-c -*- ***********************************************************
 * Linux PPP over X/Ethernet (PPPoX/PPPoE) Sockets
 *
 * PPPoX --- Generic PPP encapsulation socket family
 * PPPoE --- PPP over Ethernet (RFC 2516)
 *
 *
 * Version:     0.5.2
 *
 * Author:      Michal Ostrowski <mostrows@speakeasy.net>
 *
 * 051000 :     Initialization cleanup
 *
 * License:
 *              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.
 *
 */

#include <linux/string.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/netdevice.h>
#include <linux/net.h>
#include <linux/init.h>
#include <linux/if_pppox.h>
#include <linux/ppp_defs.h>
#include <linux/ppp-ioctl.h>
#include <linux/ppp_channel.h>
#include <linux/kmod.h>

#include <net/sock.h>

#include <linux/uaccess.h>


static const struct pppox_proto *pppox_protos[PX_MAX_PROTO + 1];



int register_pppox_proto(int proto_num, const struct pppox_proto *pp)
{
	if (proto_num < 0 || proto_num > PX_MAX_PROTO)
		return -EINVAL;
	if (pppox_protos[proto_num])
		return -EALREADY;
	pppox_protos[proto_num] = pp;
	return 0;
}

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1
33.33%
Arnaldo Carvalho de Melo
2
4.08%
1
33.33%
Eric Dumazet
1
2.04%
1
33.33%
Total
49
100.00%
3
100.00%



void unregister_pppox_proto(int proto_num)
{
	if (proto_num >= 0 && proto_num <= PX_MAX_PROTO)
		pppox_protos[proto_num] = NULL;
}

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Linus Torvalds (pre-git)
24
96.00%
1
50.00%
Arnaldo Carvalho de Melo
1
4.00%
1
50.00%
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25
100.00%
2
100.00%



void pppox_unbind_sock(struct sock *sk)
{
	/* Clear connection to ppp device, if attached. */

	if (sk->sk_state & (PPPOX_BOUND | PPPOX_CONNECTED)) {
		ppp_unregister_channel(&pppox_sk(sk)->chan);
		sk->sk_state = PPPOX_DEAD;
	}
}

Contributors
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Linus Torvalds (pre-git)
31
73.81%
1
20.00%
Michal Ostrowski
5
11.90%
1
20.00%
David S. Miller
3
7.14%
1
20.00%
Arnaldo Carvalho de Melo
2
4.76%
1
20.00%
Florian Zumbiehl
1
2.38%
1
20.00%
Total
42
100.00%
5
100.00%


EXPORT_SYMBOL(register_pppox_proto);

EXPORT_SYMBOL(unregister_pppox_proto);

EXPORT_SYMBOL(pppox_unbind_sock);



int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
{
	struct sock *sk = sock->sk;
	struct pppox_sock *po = pppox_sk(sk);
	int rc;

	lock_sock(sk);

	switch (cmd) {
	case PPPIOCGCHAN: {
		int index;
		rc = -ENOTCONN;
		if (!(sk->sk_state & PPPOX_CONNECTED))
			break;

		rc = -EINVAL;
		index = ppp_channel_index(&po->chan);
		if (put_user(index , (int __user *) arg))
			break;

		rc = 0;
		sk->sk_state |= PPPOX_BOUND;
		break;
	}
	default:
		rc = pppox_protos[sk->sk_protocol]->ioctl ?
			pppox_protos[sk->sk_protocol]->ioctl(sock, cmd, arg) : -ENOTTY;
	}

	release_sock(sk);
	return rc;
}

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Linus Torvalds (pre-git)
128
82.05%
1
14.29%
Arnaldo Carvalho de Melo
16
10.26%
3
42.86%
Florian Zumbiehl
6
3.85%
1
14.29%
David S. Miller
5
3.21%
1
14.29%
Al Viro
1
0.64%
1
14.29%
Total
156
100.00%
7
100.00%


EXPORT_SYMBOL(pppox_ioctl);



static int pppox_create(struct net *net, struct socket *sock, int protocol,
			int kern)
{
	int rc = -EPROTOTYPE;

	if (protocol < 0 || protocol > PX_MAX_PROTO)
		goto out;

	rc = -EPROTONOSUPPORT;
	if (!pppox_protos[protocol])
		request_module("net-pf-%d-proto-%d", PF_PPPOX, protocol);
	if (!pppox_protos[protocol] ||
	    !try_module_get(pppox_protos[protocol]->owner))
		goto out;

	rc = pppox_protos[protocol]->create(net, sock, kern);

	module_put(pppox_protos[protocol]->owner);
out:
	return rc;
}

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Arnaldo Carvalho de Melo
45
38.79%
3
27.27%
Linus Torvalds (pre-git)
41
35.34%
1
9.09%
James Chapman
13
11.21%
1
9.09%
Eric W. Biedermann
9
7.76%
2
18.18%
Guillaume Nault
3
2.59%
1
9.09%
Eric Paris
3
2.59%
1
9.09%
Linus Torvalds
1
0.86%
1
9.09%
Johannes Berg
1
0.86%
1
9.09%
Total
116
100.00%
11
100.00%


static const struct net_proto_family pppox_proto_family = {
	.family	= PF_PPPOX,
	.create	= pppox_create,
	.owner	= THIS_MODULE,
};



static int __init pppox_init(void)
{
	return sock_register(&pppox_proto_family);
}

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Linus Torvalds (pre-git)
14
87.50%
3
60.00%
Arnaldo Carvalho de Melo
1
6.25%
1
20.00%
Linus Torvalds
1
6.25%
1
20.00%
Total
16
100.00%
5
100.00%



static void __exit pppox_exit(void)
{
	sock_unregister(PF_PPPOX);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
13
92.86%
2
66.67%
Linus Torvalds
1
7.14%
1
33.33%
Total
14
100.00%
3
100.00%


module_init(pppox_init);

module_exit(pppox_exit);

MODULE_AUTHOR("Michal Ostrowski <mostrows@speakeasy.net>");
MODULE_DESCRIPTION("PPP over Ethernet driver (generic socket layer)");
MODULE_LICENSE("GPL");

MODULE_ALIAS_NETPROTO(PF_PPPOX);
Overall Contributors
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Tokens
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Commits
CommitProp
Linus Torvalds (pre-git)
373
68.32%
3
10.71%
Arnaldo Carvalho de Melo
85
15.57%
7
25.00%
Linus Torvalds
20
3.66%
3
10.71%
James Chapman
16
2.93%
1
3.57%
David S. Miller
13
2.38%
2
7.14%
Eric W. Biedermann
9
1.65%
2
7.14%
Guillaume Nault
8
1.47%
1
3.57%
Florian Zumbiehl
7
1.28%
2
7.14%
Michal Ostrowski
6
1.10%
1
3.57%
Eric Paris
3
0.55%
1
3.57%
Eric Dumazet
2
0.37%
1
3.57%
Stephen Hemminger
1
0.18%
1
3.57%
Johannes Berg
1
0.18%
1
3.57%
Paul Mackerras
1
0.18%
1
3.57%
Al Viro
1
0.18%
1
3.57%
Total
546
100.00%
28
100.00%
Directory: drivers/net/ppp

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