ng_pppoe.h revision 52562
152419Sjulian 252419Sjulian/* 352419Sjulian * ng_pppoe.h 452419Sjulian * 552419Sjulian * Copyright (c) 1996-1999 Whistle Communications, Inc. 652419Sjulian * All rights reserved. 752419Sjulian * 852419Sjulian * Subject to the following obligations and disclaimer of warranty, use and 952419Sjulian * redistribution of this software, in source or object code forms, with or 1052419Sjulian * without modifications are expressly permitted by Whistle Communications; 1152419Sjulian * provided, however, that: 1252419Sjulian * 1. Any and all reproductions of the source or object code must include the 1352419Sjulian * copyright notice above and the following disclaimer of warranties; and 1452419Sjulian * 2. No rights are granted, in any manner or form, to use Whistle 1552419Sjulian * Communications, Inc. trademarks, including the mark "WHISTLE 1652419Sjulian * COMMUNICATIONS" on advertising, endorsements, or otherwise except as 1752419Sjulian * such appears in the above copyright notice or in the software. 1852419Sjulian * 1952419Sjulian * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND 2052419Sjulian * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO 2152419Sjulian * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 2252419Sjulian * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 2352419Sjulian * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 2452419Sjulian * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY 2552419Sjulian * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 2652419Sjulian * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 2752419Sjulian * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES 2852419Sjulian * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 2952419Sjulian * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 3052419Sjulian * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 3152419Sjulian * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 3252419Sjulian * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 3352419Sjulian * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 3452419Sjulian * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 3552419Sjulian * OF SUCH DAMAGE. 3652419Sjulian * 3752419Sjulian * Author: Julian Elischer <julian@whistle.com> 3852419Sjulian * 3952419Sjulian * $FreeBSD: head/sys/netgraph/ng_pppoe.h 52562 1999-10-27 11:29:51Z julian $ 4052419Sjulian * $Whistle: ng_pppoe.h,v 1.7 1999/10/16 10:16:43 julian Exp $ 4152419Sjulian */ 4252419Sjulian 4352419Sjulian#ifndef _NETGRAPH_PPPOE_H_ 4452419Sjulian#define _NETGRAPH_PPPOE_H_ 4552419Sjulian 4652419Sjulian/******************************************************************** 4752419Sjulian * Netgraph hook constants etc. 4852419Sjulian ********************************************************************/ 4952419Sjulian/* Node type name. This should be unique among all netgraph node types */ 5052562Sjulian#define NG_PPPOE_NODE_TYPE "pppoe" 5152419Sjulian 5252419Sjulian#define NGM_PPPOE_COOKIE 939032003 5352419Sjulian 5452419Sjulian/* Number of active sessions we can handle */ 5552419Sjulian#define PPPOE_NUM_SESSIONS 16 /* for now */ 5652419Sjulian#define PPPOE_SERVICE_NAME_SIZE 64 /* for now */ 5752419Sjulian 5852419Sjulian/* Hook names */ 5952419Sjulian#define NG_PPPOE_HOOK_ETHERNET "ethernet" 6052419Sjulian#define NG_PPPOE_HOOK_PADI "PADI" /* default PADI requests come here */ 6152419Sjulian#define NG_PPPOE_HOOK_S_LEADIN "service" /* PADO responses from PADI */ 6252419Sjulian#define NG_PPPOE_HOOK_C_LEADIN "client" /* Connect message starts this */ 6352419Sjulian#define NG_PPPOE_HOOK_DEBUG "debug" 6452419Sjulian 6552419Sjulian/********************************************************************** 6652419Sjulian * Netgraph commands understood by this node type. 6752419Sjulian * FAIL, SUCCESS and CLOSE are sent by the node rather than received. 6852419Sjulian ********************************************************************/ 6952441Sjulianenum cmd { 7052419Sjulian NGM_PPPOE_SET_FLAG = 1, 7152419Sjulian NGM_PPPOE_CONNECT = 2, /* Client, Try find this service */ 7252419Sjulian NGM_PPPOE_LISTEN = 3, /* Server, Await a request for this service */ 7352419Sjulian NGM_PPPOE_OFFER = 4, /* Server, hook X should respond (*) */ 7452419Sjulian NGM_PPPOE_SUCCESS = 5, /* State machine connected */ 7552419Sjulian NGM_PPPOE_FAIL = 6, /* State machine could not connect */ 7652419Sjulian NGM_PPPOE_CLOSE = 7, /* Session closed down */ 7752419Sjulian NGM_PPPOE_GET_STATUS 7852419Sjulian}; 7952419Sjulian 8052419Sjulian/*********************** 8152419Sjulian * Structures passed in the various netgraph command messages. 8252419Sjulian ***********************/ 8352419Sjulian/* This structure is returned by the NGM_PPPOE_GET_STATUS command */ 8452562Sjulianstruct ngpppoestat { 8552419Sjulian u_int packets_in; /* packets in from downstream */ 8652419Sjulian u_int packets_out; /* packets out towards downstream */ 8752419Sjulian}; 8852419Sjulian 8952419Sjulian/* 9052419Sjulian * When this structure is accepted by the NGM_PPPOE_CONNECT command : 9152419Sjulian * The data field is MANDATORY. 9252419Sjulian * The session sends out a PADI request for the named service. 9352419Sjulian * 9452419Sjulian * 9552419Sjulian * When this structure is accepted by the NGM_PPPOE_WAIT command. 9652419Sjulian * If no service is given this is assumed to accept ALL PADI requests. 9752419Sjulian * This may at some time take a regexp exporession, but not yet. 9852419Sjulian * Matching PADI requests will be passed up the named hook. 9952419Sjulian * 10052419Sjulian * 10152419Sjulian * When this structure is accepted by the NGM_PPPOE_OFFER command: 10252419Sjulian * The AC-NAme field is set from that given and a PADI 10352419Sjulian * packet is expected to arrive from the session control daemon, on the 10452419Sjulian * named hook. The session will then issue the appropriate PADO 10552419Sjulian * and begin negotiation. 10652419Sjulian */ 10752562Sjulianstruct ngpppoe_init_data { 10852419Sjulian char hook[NG_HOOKLEN + 1]; /* hook to monitor on */ 10952419Sjulian u_int16_t data_len; /* Length of the service name */ 11052419Sjulian char data[0]; /* init data goes here */ 11152419Sjulian}; 11252419Sjulian 11352419Sjulian/* 11452419Sjulian * This structure is used by the asychronous success and failure messages. 11552419Sjulian * (to report which hook has failed or connected). The message is sent 11652419Sjulian * to whoever requested the connection. (close may use this too). 11752419Sjulian */ 11852562Sjulianstruct ngpppoe_sts { 11952419Sjulian char hook[NG_HOOKLEN + 1]; /* hook associated with event session */ 12052419Sjulian}; 12152419Sjulian 12252419Sjulian 12352419Sjulian/******************************************************************** 12452562Sjulian * Constants and definitions specific to pppoe 12552419Sjulian ********************************************************************/ 12652419Sjulian 12752419Sjulian#define PPPOE_TIMEOUT_LIMIT 64 12852419Sjulian#define PPPOE_OFFER_TIMEOUT 16 12952419Sjulian 13052419Sjulian/* Codes to identify message types */ 13152419Sjulian#define PADI_CODE 0x09 13252419Sjulian#define PADO_CODE 0x07 13352419Sjulian#define PADR_CODE 0x19 13452419Sjulian#define PADS_CODE 0x65 13552419Sjulian#define PADT_CODE 0xa7 13652419Sjulian 13752419Sjulian/* Tag identifiers */ 13852419Sjulian#if BYTE_ORDER == BIG_ENDIAN 13952419Sjulian#define PTT_EOL (0x0000) 14052419Sjulian#define PTT_SRV_NAME (0x0101) 14152419Sjulian#define PTT_AC_NAME (0x0102) 14252419Sjulian#define PTT_HOST_UNIQ (0x0103) 14352419Sjulian#define PTT_AC_COOKIE (0x0104) 14452419Sjulian#define PTT_VENDOR (0x0105) 14552419Sjulian#define PTT_RELAY_SID (0x0106) 14652419Sjulian#define PTT_SRV_ERR (0x0201) 14752419Sjulian#define PTT_SYS_ERR (0x0202) 14852419Sjulian#define PTT_GEN_ERR (0x0203) 14952419Sjulian 15052562Sjulian#define ETHERTYPE_PPPOE_DISC 0x8863 /* pppoe discovery packets */ 15152562Sjulian#define ETHERTYPE_PPPOE_SESS 0x8864 /* pppoe session packets */ 15252419Sjulian#else 15352419Sjulian#define PTT_EOL (0x0000) 15452419Sjulian#define PTT_SRV_NAME (0x0101) 15552419Sjulian#define PTT_AC_NAME (0x0201) 15652419Sjulian#define PTT_HOST_UNIQ (0x0301) 15752419Sjulian#define PTT_AC_COOKIE (0x0401) 15852419Sjulian#define PTT_VENDOR (0x0501) 15952419Sjulian#define PTT_RELAY_SID (0x0601) 16052419Sjulian#define PTT_SRV_ERR (0x0102) 16152419Sjulian#define PTT_SYS_ERR (0x0202) 16252419Sjulian#define PTT_GEN_ERR (0x0302) 16352419Sjulian 16452562Sjulian#define ETHERTYPE_PPPOE_DISC 0x6388 /* pppoe discovery packets */ 16552562Sjulian#define ETHERTYPE_PPPOE_SESS 0x6488 /* pppoe session packets */ 16652419Sjulian#endif 16752419Sjulian 16852419Sjulianstruct pppoe_tag { 16952419Sjulian u_int16_t tag_type; 17052419Sjulian u_int16_t tag_len; 17152419Sjulian char tag_data[0]; 17252419Sjulian}__attribute ((packed)); 17352419Sjulian 17452419Sjulianstruct pppoe_hdr{ 17552419Sjulian u_int8_t ver:4; 17652419Sjulian u_int8_t type:4; 17752419Sjulian u_int8_t code; 17852419Sjulian u_int16_t sid; 17952419Sjulian u_int16_t length; 18052419Sjulian struct pppoe_tag tag[0]; 18152419Sjulian}__attribute__ ((packed)); 18252419Sjulian 18352419Sjulian 18452419Sjulianstruct pppoe_full_hdr { 18552419Sjulian struct ether_header eh; 18652419Sjulian struct pppoe_hdr ph; 18752419Sjulian}__attribute__ ((packed)); 18852419Sjulian 18952419Sjulianunion packet { 19052419Sjulian struct pppoe_full_hdr pkt_header; 19152419Sjulian u_int8_t bytes[2048]; 19252419Sjulian}; 19352419Sjulian 19452419Sjulianstruct datatag { 19552419Sjulian struct pppoe_tag hdr; 19652419Sjulian u_int8_t data[PPPOE_SERVICE_NAME_SIZE]; 19752419Sjulian}; 19852419Sjulian 19952419Sjulian 20052419Sjulian/* 20152419Sjulian * Define the order in which we will place tags in packets 20252419Sjulian * this may be ignored 20352419Sjulian */ 20452419Sjulian/* for PADI */ 20552419Sjulian#define TAGI_SVC 0 20652419Sjulian#define TAGI_HUNIQ 1 20752419Sjulian/* for PADO */ 20852419Sjulian#define TAGO_ACNAME 0 20952419Sjulian#define TAGO_SVC 1 21052419Sjulian#define TAGO_COOKIE 2 21152419Sjulian#define TAGO_HUNIQ 3 21252419Sjulian/* for PADR */ 21352419Sjulian#define TAGR_SVC 0 21452419Sjulian#define TAGR_HUNIQ 1 21552419Sjulian#define TAGR_COOKIE 2 21652419Sjulian/* for PADS */ 21752419Sjulian#define TAGS_ACNAME 0 21852419Sjulian#define TAGS_SVC 1 21952419Sjulian#define TAGS_COOKIE 2 22052419Sjulian#define TAGS_HUNIQ 3 22152419Sjulian/* for PADT */ 22252419Sjulian 22352419Sjulian#endif /* _NETGRAPH_PPPOE_H_ */ 22452419Sjulian 225