Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/***************************************************************************
3 * Linux PPP over X - Generic PPP transport layer sockets
4 * Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516)
5 *
6 * This file supplies definitions required by the PPP over Ethernet driver
7 * (pppox.c). All version information wrt this file is located in pppox.c
8 */
9#ifndef __LINUX_IF_PPPOX_H
10#define __LINUX_IF_PPPOX_H
11
12#include <linux/if.h>
13#include <linux/netdevice.h>
14#include <linux/ppp_channel.h>
15#include <linux/skbuff.h>
16#include <linux/workqueue.h>
17#include <uapi/linux/if_pppox.h>
18
19static inline struct pppoe_hdr *pppoe_hdr(const struct sk_buff *skb)
20{
21 return (struct pppoe_hdr *)skb_network_header(skb);
22}
23
24struct pppoe_opt {
25 struct net_device *dev; /* device associated with socket*/
26 int ifindex; /* ifindex of device associated with socket */
27 struct pppoe_addr pa; /* what this socket is bound to*/
28 struct work_struct padt_work;/* Work item for handling PADT */
29};
30
31struct pptp_opt {
32 struct pptp_addr src_addr;
33 struct pptp_addr dst_addr;
34 u32 ack_sent, ack_recv;
35 u32 seq_sent, seq_recv;
36 int ppp_flags;
37};
38#include <net/sock.h>
39
40struct pppox_sock {
41 /* struct sock must be the first member of pppox_sock */
42 struct sock sk;
43 struct ppp_channel chan;
44 struct pppox_sock __rcu *next; /* for hash table */
45 union {
46 struct pppoe_opt pppoe;
47 struct pptp_opt pptp;
48 } proto;
49 __be16 num;
50};
51#define pppoe_dev proto.pppoe.dev
52#define pppoe_ifindex proto.pppoe.ifindex
53#define pppoe_pa proto.pppoe.pa
54
55static inline struct pppox_sock *pppox_sk(struct sock *sk)
56{
57 return container_of(sk, struct pppox_sock, sk);
58}
59
60struct module;
61
62struct pppox_proto {
63 int (*create)(struct net *net, struct socket *sock, int kern);
64 int (*ioctl)(struct socket *sock, unsigned int cmd,
65 unsigned long arg);
66 struct module *owner;
67};
68
69extern int register_pppox_proto(int proto_num, const struct pppox_proto *pp);
70extern void unregister_pppox_proto(int proto_num);
71extern void pppox_unbind_sock(struct sock *sk);/* delete ppp-channel binding */
72extern int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
73extern int pppox_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
74
75/* PPPoX socket states */
76enum {
77 PPPOX_NONE = 0, /* initial state */
78 PPPOX_CONNECTED = 1, /* connection established ==TCP_ESTABLISHED */
79 PPPOX_BOUND = 2, /* bound to ppp device */
80 PPPOX_DEAD = 16 /* dead, useless, please clean me up!*/
81};
82
83#endif /* !(__LINUX_IF_PPPOX_H) */