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 (4804B)

      1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
      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 *		This program is free software; you can redistribute it and/or
     11 *		modify it under the terms of the GNU General Public License
     12 *		as published by the Free Software Foundation; either version
     13 *		2 of the License, or (at your option) any later version.
     14 *
     15 */
     16
     17#ifndef _UAPI__LINUX_IF_PPPOX_H
     18#define _UAPI__LINUX_IF_PPPOX_H
     19
     20
     21#include <linux/types.h>
     22#include <asm/byteorder.h>
     23
     24#include <linux/socket.h>
     25#include <linux/if.h>
     26#include <linux/if_ether.h>
     27#include <linux/if_pppol2tp.h>
     28#include <linux/in.h>
     29#include <linux/in6.h>
     30
     31/* For user-space programs to pick up these definitions
     32 * which they wouldn't get otherwise without defining __KERNEL__
     33 */
     34#ifndef AF_PPPOX
     35#define AF_PPPOX	24
     36#define PF_PPPOX	AF_PPPOX
     37#endif /* !(AF_PPPOX) */
     38
     39/************************************************************************ 
     40 * PPPoE addressing definition 
     41 */ 
     42typedef __be16 sid_t;
     43struct pppoe_addr {
     44	sid_t         sid;                    /* Session identifier */
     45	unsigned char remote[ETH_ALEN];       /* Remote address */
     46	char          dev[IFNAMSIZ];          /* Local device to use */
     47}; 
     48 
     49/************************************************************************ 
     50 * PPTP addressing definition
     51 */
     52struct pptp_addr {
     53	__u16		call_id;
     54	struct in_addr	sin_addr;
     55};
     56
     57/************************************************************************
     58 * Protocols supported by AF_PPPOX
     59 */
     60#define PX_PROTO_OE    0 /* Currently just PPPoE */
     61#define PX_PROTO_OL2TP 1 /* Now L2TP also */
     62#define PX_PROTO_PPTP  2
     63#define PX_MAX_PROTO   3
     64
     65struct sockaddr_pppox {
     66	__kernel_sa_family_t sa_family;       /* address family, AF_PPPOX */
     67	unsigned int    sa_protocol;          /* protocol identifier */
     68	union {
     69		struct pppoe_addr  pppoe;
     70		struct pptp_addr   pptp;
     71	} sa_addr;
     72} __packed;
     73
     74/* The use of the above union isn't viable because the size of this
     75 * struct must stay fixed over time -- applications use sizeof(struct
     76 * sockaddr_pppox) to fill it. We use a protocol specific sockaddr
     77 * type instead.
     78 */
     79struct sockaddr_pppol2tp {
     80	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
     81	unsigned int    sa_protocol;    /* protocol identifier */
     82	struct pppol2tp_addr pppol2tp;
     83} __packed;
     84
     85struct sockaddr_pppol2tpin6 {
     86	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
     87	unsigned int    sa_protocol;    /* protocol identifier */
     88	struct pppol2tpin6_addr pppol2tp;
     89} __packed;
     90
     91/* The L2TPv3 protocol changes tunnel and session ids from 16 to 32
     92 * bits. So we need a different sockaddr structure.
     93 */
     94struct sockaddr_pppol2tpv3 {
     95	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
     96	unsigned int    sa_protocol;    /* protocol identifier */
     97	struct pppol2tpv3_addr pppol2tp;
     98} __packed;
     99
    100struct sockaddr_pppol2tpv3in6 {
    101	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
    102	unsigned int    sa_protocol;    /* protocol identifier */
    103	struct pppol2tpv3in6_addr pppol2tp;
    104} __packed;
    105
    106/*********************************************************************
    107 *
    108 * ioctl interface for defining forwarding of connections
    109 *
    110 ********************************************************************/
    111
    112#define PPPOEIOCSFWD	_IOW(0xB1 ,0, size_t)
    113#define PPPOEIOCDFWD	_IO(0xB1 ,1)
    114/*#define PPPOEIOCGFWD	_IOWR(0xB1,2, size_t)*/
    115
    116/* Codes to identify message types */
    117#define PADI_CODE	0x09
    118#define PADO_CODE	0x07
    119#define PADR_CODE	0x19
    120#define PADS_CODE	0x65
    121#define PADT_CODE	0xa7
    122struct pppoe_tag {
    123	__be16 tag_type;
    124	__be16 tag_len;
    125	char tag_data[0];
    126} __attribute__ ((packed));
    127
    128/* Tag identifiers */
    129#define PTT_EOL		__cpu_to_be16(0x0000)
    130#define PTT_SRV_NAME	__cpu_to_be16(0x0101)
    131#define PTT_AC_NAME	__cpu_to_be16(0x0102)
    132#define PTT_HOST_UNIQ	__cpu_to_be16(0x0103)
    133#define PTT_AC_COOKIE	__cpu_to_be16(0x0104)
    134#define PTT_VENDOR 	__cpu_to_be16(0x0105)
    135#define PTT_RELAY_SID	__cpu_to_be16(0x0110)
    136#define PTT_SRV_ERR     __cpu_to_be16(0x0201)
    137#define PTT_SYS_ERR  	__cpu_to_be16(0x0202)
    138#define PTT_GEN_ERR  	__cpu_to_be16(0x0203)
    139
    140struct pppoe_hdr {
    141#if defined(__LITTLE_ENDIAN_BITFIELD)
    142	__u8 type : 4;
    143	__u8 ver : 4;
    144#elif defined(__BIG_ENDIAN_BITFIELD)
    145	__u8 ver : 4;
    146	__u8 type : 4;
    147#else
    148#error	"Please fix <asm/byteorder.h>"
    149#endif
    150	__u8 code;
    151	__be16 sid;
    152	__be16 length;
    153	struct pppoe_tag tag[0];
    154} __packed;
    155
    156/* Length of entire PPPoE + PPP header */
    157#define PPPOE_SES_HLEN	8
    158
    159
    160#endif /* _UAPI__LINUX_IF_PPPOX_H */