1 /* 2 * ng_pppoe.h 3 */ 4 5 /*- 6 * Copyright (c) 1996-1999 Whistle Communications, Inc. 7 * All rights reserved. 8 * 9 * Subject to the following obligations and disclaimer of warranty, use and 10 * redistribution of this software, in source or object code forms, with or 11 * without modifications are expressly permitted by Whistle Communications; 12 * provided, however, that: 13 * 1. Any and all reproductions of the source or object code must include the 14 * copyright notice above and the following disclaimer of warranties; and 15 * 2. No rights are granted, in any manner or form, to use Whistle 16 * Communications, Inc. trademarks, including the mark "WHISTLE 17 * COMMUNICATIONS" on advertising, endorsements, or otherwise except as 18 * such appears in the above copyright notice or in the software. 19 * 20 * THIS SOFTWARE IS BEING PROVIDED BY WHISTLE COMMUNICATIONS "AS IS", AND 21 * TO THE MAXIMUM EXTENT PERMITTED BY LAW, WHISTLE COMMUNICATIONS MAKES NO 22 * REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THIS SOFTWARE, 23 * INCLUDING WITHOUT LIMITATION, ANY AND ALL IMPLIED WARRANTIES OF 24 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT. 25 * WHISTLE COMMUNICATIONS DOES NOT WARRANT, GUARANTEE, OR MAKE ANY 26 * REPRESENTATIONS REGARDING THE USE OF, OR THE RESULTS OF THE USE OF THIS 27 * SOFTWARE IN TERMS OF ITS CORRECTNESS, ACCURACY, RELIABILITY OR OTHERWISE. 28 * IN NO EVENT SHALL WHISTLE COMMUNICATIONS BE LIABLE FOR ANY DAMAGES 29 * RESULTING FROM OR ARISING OUT OF ANY USE OF THIS SOFTWARE, INCLUDING 30 * WITHOUT LIMITATION, ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, 31 * PUNITIVE, OR CONSEQUENTIAL DAMAGES, PROCUREMENT OF SUBSTITUTE GOODS OR 32 * SERVICES, LOSS OF USE, DATA OR PROFITS, HOWEVER CAUSED AND UNDER ANY 33 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 34 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 35 * THIS SOFTWARE, EVEN IF WHISTLE COMMUNICATIONS IS ADVISED OF THE POSSIBILITY 36 * OF SUCH DAMAGE. 37 * 38 * Author: Julian Elischer <[email protected]> 39 * 40 * $FreeBSD$ 41 * $Whistle: ng_pppoe.h,v 1.7 1999/10/16 10:16:43 julian Exp $ 42 */ 43 44 #ifndef _NETGRAPH_NG_PPPOE_H_ 45 #define _NETGRAPH_NG_PPPOE_H_ 46 47 #ifndef __packed 48 #define __packed __attribute__((__packed__)) 49 #endif 50 51 /******************************************************************** 52 * Netgraph hook constants etc. 53 ********************************************************************/ 54 /* Node type name. This should be unique among all netgraph node types */ 55 #define NG_PPPOE_NODE_TYPE "pppoe" 56 57 #define NGM_PPPOE_COOKIE 1089893072 58 #define NGM_PPPOE_SETMAXP_COOKIE 1441624322 59 60 #define PPPOE_SERVICE_NAME_SIZE 64 /* for now */ 61 62 /* Hook names */ 63 #define NG_PPPOE_HOOK_ETHERNET "ethernet" 64 #define NG_PPPOE_HOOK_DEBUG "debug" 65 66 /* Mode names */ 67 #define NG_PPPOE_STANDARD "standard" 68 #define NG_PPPOE_3COM "3Com" 69 #define NG_PPPOE_NONSTANDARD NG_PPPOE_3COM 70 #define NG_PPPOE_DLINK "D-Link" 71 72 /********************************************************************** 73 * Netgraph commands understood by this node type. 74 * FAIL, SUCCESS, CLOSE and ACNAME are sent by the node rather than received. 75 ********************************************************************/ 76 enum cmd { 77 NGM_PPPOE_SET_FLAG = 1, 78 NGM_PPPOE_CONNECT = 2, /* Client, Try find this service */ 79 NGM_PPPOE_LISTEN = 3, /* Server, Await a request for this service */ 80 NGM_PPPOE_OFFER = 4, /* Server, hook X should respond (*) */ 81 NGM_PPPOE_SUCCESS = 5, /* State machine connected */ 82 NGM_PPPOE_FAIL = 6, /* State machine could not connect */ 83 NGM_PPPOE_CLOSE = 7, /* Session closed down */ 84 NGM_PPPOE_SERVICE = 8, /* additional Service to advertise (in PADO) */ 85 NGM_PPPOE_ACNAME = 9, /* AC_NAME for informational purposes */ 86 NGM_PPPOE_GET_STATUS = 10, /* data in/out */ 87 NGM_PPPOE_SESSIONID = 11, /* Session_ID for informational purposes */ 88 NGM_PPPOE_SETMODE = 12, /* set to standard or compat modes */ 89 NGM_PPPOE_GETMODE = 13, /* see current mode */ 90 NGM_PPPOE_SETENADDR = 14, /* set Ethernet address */ 91 NGM_PPPOE_SETMAXP = 15 /* Set PPP-Max-Payload value */ 92 }; 93 94 /*********************** 95 * Structures passed in the various netgraph command messages. 96 ***********************/ 97 /* This structure is returned by the NGM_PPPOE_GET_STATUS command */ 98 struct ngpppoestat { 99 u_int packets_in; /* packets in from ethernet */ 100 u_int packets_out; /* packets out towards ethernet */ 101 }; 102 103 /* Keep this in sync with the above structure definition */ 104 #define NG_PPPOESTAT_TYPE_INFO { \ 105 { "packets_in", &ng_parse_uint_type }, \ 106 { "packets_out", &ng_parse_uint_type }, \ 107 { NULL } \ 108 } 109 110 /* 111 * When this structure is accepted by the NGM_PPPOE_CONNECT command : 112 * The data field is MANDATORY. 113 * The session sends out a PADI request for the named service. 114 * 115 * 116 * When this structure is accepted by the NGM_PPPOE_LISTEN command. 117 * If no service is given this is assumed to accept ALL PADI requests. 118 * This may at some time take a regexp expression, but not yet. 119 * Matching PADI requests will be passed up the named hook. 120 * 121 * 122 * When this structure is accepted by the NGM_PPPOE_OFFER command: 123 * The AC-NAme field is set from that given and a PADI 124 * packet is expected to arrive from the session control daemon, on the 125 * named hook. The session will then issue the appropriate PADO 126 * and begin negotiation. 127 */ 128 struct ngpppoe_init_data { 129 char hook[NG_HOOKSIZ]; /* hook to monitor on */ 130 u_int16_t data_len; /* Length of the service name */ 131 char data[]; /* init data goes here */ 132 }; 133 134 /* Keep this in sync with the above structure definition */ 135 #define NG_PPPOE_INIT_DATA_TYPE_INFO { \ 136 { "hook", &ng_parse_hookbuf_type }, \ 137 { "data", &ng_parse_sizedstring_type }, \ 138 { NULL } \ 139 } 140 141 /* 142 * This structure is used by the asychronous success and failure messages. 143 * (to report which hook has failed or connected). The message is sent 144 * to whoever requested the connection. (close may use this too). 145 */ 146 struct ngpppoe_sts { 147 char hook[NG_HOOKSIZ]; /* hook associated with event session */ 148 }; 149 150 /* Keep this in sync with the above structure definition */ 151 #define NG_PPPOE_STS_TYPE_INFO { \ 152 { "hook", &ng_parse_hookbuf_type }, \ 153 { NULL } \ 154 } 155 156 /* 157 * This structure is used to send PPP-Max-Payload value from server to client. 158 */ 159 struct ngpppoe_maxp { 160 char hook[NG_HOOKSIZ]; /* hook associated with event session */ 161 uint16_t data; 162 }; 163 164 /******************************************************************** 165 * Constants and definitions specific to pppoe 166 ********************************************************************/ 167 168 #define PPPOE_TIMEOUT_LIMIT 64 169 #define PPPOE_OFFER_TIMEOUT 16 170 #define PPPOE_INITIAL_TIMEOUT 2 171 172 /* Codes to identify message types */ 173 #define PADI_CODE 0x09 174 #define PADO_CODE 0x07 175 #define PADR_CODE 0x19 176 #define PADS_CODE 0x65 177 #define PADT_CODE 0xa7 178 179 /* Tag identifiers */ 180 #if BYTE_ORDER == BIG_ENDIAN 181 #define PTT_EOL (0x0000) 182 #define PTT_SRV_NAME (0x0101) 183 #define PTT_AC_NAME (0x0102) 184 #define PTT_HOST_UNIQ (0x0103) 185 #define PTT_AC_COOKIE (0x0104) 186 #define PTT_VENDOR (0x0105) 187 #define PTT_RELAY_SID (0x0110) 188 #define PTT_MAX_PAYL (0x0120) /* PPP-Max-Payload (RFC4638) */ 189 #define PTT_SRV_ERR (0x0201) 190 #define PTT_SYS_ERR (0x0202) 191 #define PTT_GEN_ERR (0x0203) 192 193 #define ETHERTYPE_PPPOE_DISC 0x8863 /* pppoe discovery packets */ 194 #define ETHERTYPE_PPPOE_SESS 0x8864 /* pppoe session packets */ 195 #define ETHERTYPE_PPPOE_3COM_DISC 0x3c12 /* pppoe discovery packets 3com? */ 196 #define ETHERTYPE_PPPOE_3COM_SESS 0x3c13 /* pppoe session packets 3com? */ 197 #else 198 #define PTT_EOL (0x0000) 199 #define PTT_SRV_NAME (0x0101) 200 #define PTT_AC_NAME (0x0201) 201 #define PTT_HOST_UNIQ (0x0301) 202 #define PTT_AC_COOKIE (0x0401) 203 #define PTT_VENDOR (0x0501) 204 #define PTT_RELAY_SID (0x1001) 205 #define PTT_MAX_PAYL (0x2001) /* PPP-Max-Payload (RFC4638) */ 206 #define PTT_SRV_ERR (0x0102) 207 #define PTT_SYS_ERR (0x0202) 208 #define PTT_GEN_ERR (0x0302) 209 210 #define ETHERTYPE_PPPOE_DISC 0x6388 /* pppoe discovery packets */ 211 #define ETHERTYPE_PPPOE_SESS 0x6488 /* pppoe session packets */ 212 #define ETHERTYPE_PPPOE_3COM_DISC 0x123c /* pppoe discovery packets 3com? */ 213 #define ETHERTYPE_PPPOE_3COM_SESS 0x133c /* pppoe session packets 3com? */ 214 #endif 215 216 struct pppoe_tag { 217 u_int16_t tag_type; 218 u_int16_t tag_len; 219 }__packed; 220 221 struct pppoe_hdr{ 222 u_int8_t ver:4; 223 u_int8_t type:4; 224 u_int8_t code; 225 u_int16_t sid; 226 u_int16_t length; 227 }__packed; 228 229 230 struct pppoe_full_hdr { 231 struct ether_header eh; 232 struct pppoe_hdr ph; 233 }__packed; 234 235 union packet { 236 struct pppoe_full_hdr pkt_header; 237 u_int8_t bytes[2048]; 238 }; 239 240 struct datatag { 241 struct pppoe_tag hdr; 242 u_int8_t data[PPPOE_SERVICE_NAME_SIZE]; 243 }; 244 245 struct maxptag { 246 struct pppoe_tag hdr; 247 uint16_t data; 248 }; 249 250 /* 251 * Define the order in which we will place tags in packets 252 * this may be ignored 253 */ 254 /* for PADI */ 255 #define TAGI_SVC 0 256 #define TAGI_HUNIQ 1 257 /* for PADO */ 258 #define TAGO_ACNAME 0 259 #define TAGO_SVC 1 260 #define TAGO_COOKIE 2 261 #define TAGO_HUNIQ 3 262 /* for PADR */ 263 #define TAGR_SVC 0 264 #define TAGR_HUNIQ 1 265 #define TAGR_COOKIE 2 266 /* for PADS */ 267 #define TAGS_ACNAME 0 268 #define TAGS_SVC 1 269 #define TAGS_COOKIE 2 270 #define TAGS_HUNIQ 3 271 /* for PADT */ 272 273 #endif /* _NETGRAPH_NG_PPPOE_H_ */ 274 275