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- /***************************************************************************
- * 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/if_pppol2tp.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 */
- };
-
- /************************************************************************
- * Protocols supported by AF_PPPOX
- */
- #define PX_PROTO_OE 0 /* Currently just PPPoE */
- #define PX_PROTO_OL2TP 1 /* Now L2TP also */
- #define PX_MAX_PROTO 2
-
- struct sockaddr_pppox {
- sa_family_t sa_family; /* address family, AF_PPPOX */
- unsigned int sa_protocol; /* protocol identifier */
- union{
- struct pppoe_addr pppoe;
- }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 {
- sa_family_t sa_family; /* address family, AF_PPPOX */
- unsigned int sa_protocol; /* protocol identifier */
- struct pppol2tp_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 ver : 4;
- __u8 type : 4;
- #elif defined(__BIG_ENDIAN_BITFIELD)
- __u8 type : 4;
- __u8 ver : 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) */
-