/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */


#ifndef _UAPI__LINUX_IF_PPPOX_H
#define _UAPI__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>


#ifndef AF_PPPOX
#define AF_PPPOX	24
#define PF_PPPOX	AF_PPPOX
#endif 

 
typedef __be16 sid_t;
struct pppoe_addr {
	sid_t         sid;                    
	unsigned char remote[ETH_ALEN];       
	char          dev[IFNAMSIZ];          
}; 
 

struct pptp_addr {
	__u16		call_id;
	struct in_addr	sin_addr;
};


#define PX_PROTO_OE    0 
#define PX_PROTO_OL2TP 1 
#define PX_PROTO_PPTP  2
#define PX_MAX_PROTO   3

struct sockaddr_pppox {
	__kernel_sa_family_t sa_family;       
	unsigned int    sa_protocol;          
	union {
		struct pppoe_addr  pppoe;
		struct pptp_addr   pptp;
	} sa_addr;
} __packed;


struct sockaddr_pppol2tp {
	__kernel_sa_family_t sa_family; 
	unsigned int    sa_protocol;    
	struct pppol2tp_addr pppol2tp;
} __packed;

struct sockaddr_pppol2tpin6 {
	__kernel_sa_family_t sa_family; 
	unsigned int    sa_protocol;    
	struct pppol2tpin6_addr pppol2tp;
} __packed;


struct sockaddr_pppol2tpv3 {
	__kernel_sa_family_t sa_family; 
	unsigned int    sa_protocol;    
	struct pppol2tpv3_addr pppol2tp;
} __packed;

struct sockaddr_pppol2tpv3in6 {
	__kernel_sa_family_t sa_family; 
	unsigned int    sa_protocol;    
	struct pppol2tpv3in6_addr pppol2tp;
} __packed;



#define PPPOEIOCSFWD	_IOW(0xB1 ,0, size_t)
#define PPPOEIOCDFWD	_IO(0xB1 ,1)



#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[];
} __attribute__ ((packed));


#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[];
} __packed;


#define PPPOE_SES_HLEN	8


#endif 
