| /* 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 _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> |
| |
| /* 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; |
| } __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; |
| } __packed; |
| |
| struct sockaddr_pppol2tpin6 { |
| __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
| unsigned int sa_protocol; /* protocol identifier */ |
| struct pppol2tpin6_addr pppol2tp; |
| } __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; |
| } __packed; |
| |
| struct sockaddr_pppol2tpv3in6 { |
| __kernel_sa_family_t sa_family; /* address family, AF_PPPOX */ |
| unsigned int sa_protocol; /* protocol identifier */ |
| struct pppol2tpv3in6_addr pppol2tp; |
| } __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[]; |
| } __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[]; |
| } __packed; |
| |
| /* Length of entire PPPoE + PPP header */ |
| #define PPPOE_SES_HLEN 8 |
| |
| |
| #endif /* _UAPI__LINUX_IF_PPPOX_H */ |