| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /*************************************************************************** |
| * 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: |
| */ |
| #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 <linux/workqueue.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 work_struct padt_work;/* Work item for handling PADT */ |
| }; |
| |
| 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 kern); |
| 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); |
| extern int pppox_compat_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); |
| |
| #define PPPOEIOCSFWD32 _IOW(0xB1 ,0, compat_size_t) |
| |
| /* 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_DEAD = 16 /* dead, useless, please clean me up!*/ |
| }; |
| |
| #endif /* !(__LINUX_IF_PPPOX_H) */ |