1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0-or-later */
2*4882a593Smuzhiyun /***************************************************************************
3*4882a593Smuzhiyun * Linux PPP over X - Generic PPP transport layer sockets
4*4882a593Smuzhiyun * Linux PPP over Ethernet (PPPoE) Socket Implementation (RFC 2516)
5*4882a593Smuzhiyun *
6*4882a593Smuzhiyun * This file supplies definitions required by the PPP over Ethernet driver
7*4882a593Smuzhiyun * (pppox.c). All version information wrt this file is located in pppox.c
8*4882a593Smuzhiyun *
9*4882a593Smuzhiyun * License:
10*4882a593Smuzhiyun */
11*4882a593Smuzhiyun #ifndef __LINUX_IF_PPPOX_H
12*4882a593Smuzhiyun #define __LINUX_IF_PPPOX_H
13*4882a593Smuzhiyun
14*4882a593Smuzhiyun #include <linux/if.h>
15*4882a593Smuzhiyun #include <linux/netdevice.h>
16*4882a593Smuzhiyun #include <linux/ppp_channel.h>
17*4882a593Smuzhiyun #include <linux/skbuff.h>
18*4882a593Smuzhiyun #include <linux/workqueue.h>
19*4882a593Smuzhiyun #include <uapi/linux/if_pppox.h>
20*4882a593Smuzhiyun
pppoe_hdr(const struct sk_buff * skb)21*4882a593Smuzhiyun static inline struct pppoe_hdr *pppoe_hdr(const struct sk_buff *skb)
22*4882a593Smuzhiyun {
23*4882a593Smuzhiyun return (struct pppoe_hdr *)skb_network_header(skb);
24*4882a593Smuzhiyun }
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun struct pppoe_opt {
27*4882a593Smuzhiyun struct net_device *dev; /* device associated with socket*/
28*4882a593Smuzhiyun int ifindex; /* ifindex of device associated with socket */
29*4882a593Smuzhiyun struct pppoe_addr pa; /* what this socket is bound to*/
30*4882a593Smuzhiyun struct sockaddr_pppox relay; /* what socket data will be
31*4882a593Smuzhiyun relayed to (PPPoE relaying) */
32*4882a593Smuzhiyun struct work_struct padt_work;/* Work item for handling PADT */
33*4882a593Smuzhiyun };
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun struct pptp_opt {
36*4882a593Smuzhiyun struct pptp_addr src_addr;
37*4882a593Smuzhiyun struct pptp_addr dst_addr;
38*4882a593Smuzhiyun u32 ack_sent, ack_recv;
39*4882a593Smuzhiyun u32 seq_sent, seq_recv;
40*4882a593Smuzhiyun int ppp_flags;
41*4882a593Smuzhiyun };
42*4882a593Smuzhiyun #include <net/sock.h>
43*4882a593Smuzhiyun
44*4882a593Smuzhiyun struct pppox_sock {
45*4882a593Smuzhiyun /* struct sock must be the first member of pppox_sock */
46*4882a593Smuzhiyun struct sock sk;
47*4882a593Smuzhiyun struct ppp_channel chan;
48*4882a593Smuzhiyun struct pppox_sock *next; /* for hash table */
49*4882a593Smuzhiyun union {
50*4882a593Smuzhiyun struct pppoe_opt pppoe;
51*4882a593Smuzhiyun struct pptp_opt pptp;
52*4882a593Smuzhiyun } proto;
53*4882a593Smuzhiyun __be16 num;
54*4882a593Smuzhiyun };
55*4882a593Smuzhiyun #define pppoe_dev proto.pppoe.dev
56*4882a593Smuzhiyun #define pppoe_ifindex proto.pppoe.ifindex
57*4882a593Smuzhiyun #define pppoe_pa proto.pppoe.pa
58*4882a593Smuzhiyun #define pppoe_relay proto.pppoe.relay
59*4882a593Smuzhiyun
pppox_sk(struct sock * sk)60*4882a593Smuzhiyun static inline struct pppox_sock *pppox_sk(struct sock *sk)
61*4882a593Smuzhiyun {
62*4882a593Smuzhiyun return (struct pppox_sock *)sk;
63*4882a593Smuzhiyun }
64*4882a593Smuzhiyun
sk_pppox(struct pppox_sock * po)65*4882a593Smuzhiyun static inline struct sock *sk_pppox(struct pppox_sock *po)
66*4882a593Smuzhiyun {
67*4882a593Smuzhiyun return (struct sock *)po;
68*4882a593Smuzhiyun }
69*4882a593Smuzhiyun
70*4882a593Smuzhiyun struct module;
71*4882a593Smuzhiyun
72*4882a593Smuzhiyun struct pppox_proto {
73*4882a593Smuzhiyun int (*create)(struct net *net, struct socket *sock, int kern);
74*4882a593Smuzhiyun int (*ioctl)(struct socket *sock, unsigned int cmd,
75*4882a593Smuzhiyun unsigned long arg);
76*4882a593Smuzhiyun struct module *owner;
77*4882a593Smuzhiyun };
78*4882a593Smuzhiyun
79*4882a593Smuzhiyun extern int register_pppox_proto(int proto_num, const struct pppox_proto *pp);
80*4882a593Smuzhiyun extern void unregister_pppox_proto(int proto_num);
81*4882a593Smuzhiyun extern void pppox_unbind_sock(struct sock *sk);/* delete ppp-channel binding */
82*4882a593Smuzhiyun extern int pppox_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
83*4882a593Smuzhiyun extern int pppox_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg);
84*4882a593Smuzhiyun
85*4882a593Smuzhiyun #define PPPOEIOCSFWD32 _IOW(0xB1 ,0, compat_size_t)
86*4882a593Smuzhiyun
87*4882a593Smuzhiyun /* PPPoX socket states */
88*4882a593Smuzhiyun enum {
89*4882a593Smuzhiyun PPPOX_NONE = 0, /* initial state */
90*4882a593Smuzhiyun PPPOX_CONNECTED = 1, /* connection established ==TCP_ESTABLISHED */
91*4882a593Smuzhiyun PPPOX_BOUND = 2, /* bound to ppp device */
92*4882a593Smuzhiyun PPPOX_RELAY = 4, /* forwarding is enabled */
93*4882a593Smuzhiyun PPPOX_DEAD = 16 /* dead, useless, please clean me up!*/
94*4882a593Smuzhiyun };
95*4882a593Smuzhiyun
96*4882a593Smuzhiyun #endif /* !(__LINUX_IF_PPPOX_H) */
97