linux-imx

/** -*- 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;

}

​

void unregister_pppox_proto(int proto_num)

{

    if (proto_num >= 0 && proto_num <= PX_MAX_PROTO)

        pppox_protos[proto_num] = NULL;

}

​

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;