cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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if_pppox.h (2913B)

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