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/***************************************************************************
* Linux PPP over X - Generic PPP transport layer sockets
* Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516)
*
* This file supplies definitions required by the PPP over Ethernet driver
* (pppox.c). All version information wrt this file is located in pppox.c
*
* 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.
*
*/
#ifndef __LINUX_IF_PPPOX_H
#define __LINUX_IF_PPPOX_H
#include <linux/if.h>
#include <linux/netdevice.h>
#include <linux/ppp_channel.h>
#include <linux/skbuff.h>
#include <uapi/linux/if_pppox.h>
static inline struct pppoe_hdr *pppoe_hdr(const struct sk_buff *skb)
{
return (struct pppoe_hdr *)skb_network_header(skb);
}
struct pppoe_opt {
struct net_device *dev; /* device associated with socket*/
int ifindex; /* ifindex of device associated with socket */
struct pppoe_addr pa; /* what this socket is bound to*/
struct sockaddr_pppox relay; /* what socket data will be
relayed to (PPPoE relaying) */
};
struct pptp_opt {
struct pptp_addr src_addr;
struct pptp_addr dst_addr;
u32 ack_sent, ack_recv;
u32 seq_sent, seq_recv;
int ppp_flags;
};
#include <net/sock.h>
struct pppox_sock {
/* struct sock must be the first member of pppox_sock */
struct sock sk;
struct ppp_channel chan;
struct pppox_sock *next; /* for hash table */
union {
struct pppoe_opt pppoe;
struct pptp_opt pptp;
} proto;
__be16 num;
};
#define pppoe_dev proto.pppoe.dev
#define pppoe_ifindex proto.pppoe.ifindex
#define pppoe_pa proto.pppoe.pa
#define pppoe_relay proto.pppoe.relay
static inline struct pppox_sock *pppox_sk(struct sock *sk)
{
return (struct pppox_sock *)sk;
}
static inline struct sock *sk_pppox(struct pppox_sock *po)
{
return (struct sock *)po;
}
struct module;
struct pppox_proto {
int (*create)(struct net *net, struct socket *sock);
int (*ioctl)(struct socket *sock, unsigned int cmd,
unsigned long arg);
struct module *owner;
};
extern int register_pppox_proto(int proto_num, const struct pppox_proto *pp);
extern void unregister_pppox_proto(int proto_num);
extern void pppox_unbind_sock(struct sock *sk);/* delete ppp-channel binding */
extern int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
/* PPPoX socket states */
enum {
PPPOX_NONE = 0, /* initial state */
PPPOX_CONNECTED = 1, /* connection established ==TCP_ESTABLISHED */
PPPOX_BOUND = 2, /* bound to ppp device */
PPPOX_RELAY = 4, /* forwarding is enabled */
PPPOX_ZOMBIE = 8, /* dead, but still bound to ppp device */
PPPOX_DEAD = 16 /* dead, useless, please clean me up!*/
};
#endif /* !(__LINUX_IF_PPPOX_H) */