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Edit File : if_pppox.h \| Size : 4.76 KB
/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note / /************************************************************************** * 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: * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * / #ifndef __LINUX_IF_PPPOX_H #define __LINUX_IF_PPPOX_H #include <linux/types.h> #include <asm/byteorder.h> #include <linux/socket.h> #include <linux/if.h> #include <linux/if_ether.h> #include <linux/if_pppol2tp.h> #include <linux/in.h> #include <linux/in6.h> / For user-space programs to pick up these definitions * which they wouldn't get otherwise without defining __KERNEL__ / #ifndef AF_PPPOX #define AF_PPPOX 24 #define PF_PPPOX AF_PPPOX #endif / !(AF_PPPOX) / /*********************************************************************** * PPPoE addressing definition / typedef __be16 sid_t; struct pppoe_addr { sid_t sid; / Session identifier / unsigned char remote[ETH_ALEN]; / Remote address / char dev[IFNAMSIZ]; / Local device to use / }; /*********************************************************************** * PPTP addressing definition / struct pptp_addr { __u16 call_id; struct in_addr sin_addr; }; /*********************************************************************** * Protocols supported by AF_PPPOX / #define PX_PROTO_OE 0 / Currently just PPPoE / #define PX_PROTO_OL2TP 1 / Now L2TP also / #define PX_PROTO_PPTP 2 #define PX_MAX_PROTO 3 struct sockaddr_pppox { __kernel_sa_family_t sa_family; / address family, AF_PPPOX / unsigned int sa_protocol; / protocol identifier / union { struct pppoe_addr pppoe; struct pptp_addr pptp; } sa_addr; } __attribute__((packed)); / The use of the above union isn't viable because the size of this * struct must stay fixed over time -- applications use sizeof(struct * sockaddr_pppox) to fill it. We use a protocol specific sockaddr * type instead. / struct sockaddr_pppol2tp { __kernel_sa_family_t sa_family; / address family, AF_PPPOX / unsigned int sa_protocol; / protocol identifier / struct pppol2tp_addr pppol2tp; } __attribute__((packed)); struct sockaddr_pppol2tpin6 { __kernel_sa_family_t sa_family; / address family, AF_PPPOX / unsigned int sa_protocol; / protocol identifier / struct pppol2tpin6_addr pppol2tp; } __attribute__((packed)); / The L2TPv3 protocol changes tunnel and session ids from 16 to 32 * bits. So we need a different sockaddr structure. / struct sockaddr_pppol2tpv3 { __kernel_sa_family_t sa_family; / address family, AF_PPPOX / unsigned int sa_protocol; / protocol identifier / struct pppol2tpv3_addr pppol2tp; } __attribute__((packed)); struct sockaddr_pppol2tpv3in6 { __kernel_sa_family_t sa_family; / address family, AF_PPPOX / unsigned int sa_protocol; / protocol identifier / struct pppol2tpv3in6_addr pppol2tp; } __attribute__((packed)); /******************************************************************** * * ioctl interface for defining forwarding of connections * *******************************************************************/ #define PPPOEIOCSFWD _IOW(0xB1 ,0, size_t) #define PPPOEIOCDFWD _IO(0xB1 ,1) /#define PPPOEIOCGFWD _IOWR(0xB1,2, size_t)/ / Codes to identify message types / #define PADI_CODE 0x09 #define PADO_CODE 0x07 #define PADR_CODE 0x19 #define PADS_CODE 0x65 #define PADT_CODE 0xa7 struct pppoe_tag { __be16 tag_type; __be16 tag_len; char tag_data[0]; } __attribute__ ((packed)); / Tag identifiers / #define PTT_EOL __cpu_to_be16(0x0000) #define PTT_SRV_NAME __cpu_to_be16(0x0101) #define PTT_AC_NAME __cpu_to_be16(0x0102) #define PTT_HOST_UNIQ __cpu_to_be16(0x0103) #define PTT_AC_COOKIE __cpu_to_be16(0x0104) #define PTT_VENDOR __cpu_to_be16(0x0105) #define PTT_RELAY_SID __cpu_to_be16(0x0110) #define PTT_SRV_ERR __cpu_to_be16(0x0201) #define PTT_SYS_ERR __cpu_to_be16(0x0202) #define PTT_GEN_ERR __cpu_to_be16(0x0203) struct pppoe_hdr { #if defined(__LITTLE_ENDIAN_BITFIELD) __u8 type : 4; __u8 ver : 4; #elif defined(__BIG_ENDIAN_BITFIELD) __u8 ver : 4; __u8 type : 4; #else #error "Please fix <asm/byteorder.h>" #endif __u8 code; __be16 sid; __be16 length; struct pppoe_tag tag[0]; } __attribute__((packed)); / Length of entire PPPoE + PPP header / #define PPPOE_SES_HLEN 8 #endif / __LINUX_IF_PPPOX_H */ Back

Edit File : if_pppox.h | Size : 4.76 KB

/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
/***************************************************************************
 * 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:
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 *
 */

#ifndef __LINUX_IF_PPPOX_H
#define __LINUX_IF_PPPOX_H

#include <linux/types.h>
#include <asm/byteorder.h>

#include <linux/socket.h>
#include <linux/if.h>
#include <linux/if_ether.h>
#include <linux/if_pppol2tp.h>
#include <linux/in.h>
#include <linux/in6.h>

/* For user-space programs to pick up these definitions
 * which they wouldn't get otherwise without defining __KERNEL__
 */
#ifndef AF_PPPOX
#define AF_PPPOX	24
#define PF_PPPOX	AF_PPPOX
#endif /* !(AF_PPPOX) */

/************************************************************************ 
 * PPPoE addressing definition 
 */ 
typedef __be16 sid_t;
struct pppoe_addr {
	sid_t         sid;                    /* Session identifier */
	unsigned char remote[ETH_ALEN];       /* Remote address */
	char          dev[IFNAMSIZ];          /* Local device to use */
}; 
 
/************************************************************************ 
 * PPTP addressing definition
 */
struct pptp_addr {
	__u16		call_id;
	struct in_addr	sin_addr;
};

/************************************************************************
 * Protocols supported by AF_PPPOX
 */
#define PX_PROTO_OE    0 /* Currently just PPPoE */
#define PX_PROTO_OL2TP 1 /* Now L2TP also */
#define PX_PROTO_PPTP  2
#define PX_MAX_PROTO   3

struct sockaddr_pppox {
	__kernel_sa_family_t sa_family;       /* address family, AF_PPPOX */
	unsigned int    sa_protocol;          /* protocol identifier */
	union {
		struct pppoe_addr  pppoe;
		struct pptp_addr   pptp;
	} sa_addr;
} __attribute__((packed));

/* The use of the above union isn't viable because the size of this
 * struct must stay fixed over time -- applications use sizeof(struct
 * sockaddr_pppox) to fill it. We use a protocol specific sockaddr
 * type instead.
 */
struct sockaddr_pppol2tp {
	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
	unsigned int    sa_protocol;    /* protocol identifier */
	struct pppol2tp_addr pppol2tp;
} __attribute__((packed));

struct sockaddr_pppol2tpin6 {
	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
	unsigned int    sa_protocol;    /* protocol identifier */
	struct pppol2tpin6_addr pppol2tp;
} __attribute__((packed));

/* The L2TPv3 protocol changes tunnel and session ids from 16 to 32
 * bits. So we need a different sockaddr structure.
 */
struct sockaddr_pppol2tpv3 {
	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
	unsigned int    sa_protocol;    /* protocol identifier */
	struct pppol2tpv3_addr pppol2tp;
} __attribute__((packed));

struct sockaddr_pppol2tpv3in6 {
	__kernel_sa_family_t sa_family; /* address family, AF_PPPOX */
	unsigned int    sa_protocol;    /* protocol identifier */
	struct pppol2tpv3in6_addr pppol2tp;
} __attribute__((packed));

/*********************************************************************
 *
 * ioctl interface for defining forwarding of connections
 *
 ********************************************************************/

#define PPPOEIOCSFWD	_IOW(0xB1 ,0, size_t)
#define PPPOEIOCDFWD	_IO(0xB1 ,1)
/*#define PPPOEIOCGFWD	_IOWR(0xB1,2, size_t)*/

/* Codes to identify message types */
#define PADI_CODE	0x09
#define PADO_CODE	0x07
#define PADR_CODE	0x19
#define PADS_CODE	0x65
#define PADT_CODE	0xa7
struct pppoe_tag {
	__be16 tag_type;
	__be16 tag_len;
	char tag_data[0];
} __attribute__ ((packed));

/* Tag identifiers */
#define PTT_EOL		__cpu_to_be16(0x0000)
#define PTT_SRV_NAME	__cpu_to_be16(0x0101)
#define PTT_AC_NAME	__cpu_to_be16(0x0102)
#define PTT_HOST_UNIQ	__cpu_to_be16(0x0103)
#define PTT_AC_COOKIE	__cpu_to_be16(0x0104)
#define PTT_VENDOR 	__cpu_to_be16(0x0105)
#define PTT_RELAY_SID	__cpu_to_be16(0x0110)
#define PTT_SRV_ERR     __cpu_to_be16(0x0201)
#define PTT_SYS_ERR  	__cpu_to_be16(0x0202)
#define PTT_GEN_ERR  	__cpu_to_be16(0x0203)

struct pppoe_hdr {
#if defined(__LITTLE_ENDIAN_BITFIELD)
	__u8 type : 4;
	__u8 ver : 4;
#elif defined(__BIG_ENDIAN_BITFIELD)
	__u8 ver : 4;
	__u8 type : 4;
#else
#error	"Please fix <asm/byteorder.h>"
#endif
	__u8 code;
	__be16 sid;
	__be16 length;
	struct pppoe_tag tag[0];
} __attribute__((packed));

/* Length of entire PPPoE + PPP header */
#define PPPOE_SES_HLEN	8

#endif /* __LINUX_IF_PPPOX_H */

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