sys/netgraph7/ng_pppoe.h

   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 <julian@freebsd.org>
  39  *
  40  * $FreeBSD: src/sys/netgraph/ng_pppoe.h,v 1.25 2007/12/26 19:15:07 mav Exp $
  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 /********************************************************************
  48  * Netgraph hook constants etc.
  49  ********************************************************************/
  50 /* Node type name. This should be unique among all netgraph node types */
  51 #define NG_PPPOE_NODE_TYPE      "pppoe"
  52
  53 #define NGM_PPPOE_COOKIE                1089893072
  54
  55 #define PPPOE_SERVICE_NAME_SIZE         64 /* for now */
  56
  57 /* Hook names */
  58 #define NG_PPPOE_HOOK_ETHERNET  "ethernet"
  59 #define NG_PPPOE_HOOK_DEBUG     "debug"
  60
  61 /* Mode names */
  62 #define NG_PPPOE_STANDARD       "standard"
  63 #define NG_PPPOE_3COM           "3Com"
  64 #define NG_PPPOE_NONSTANDARD    NG_PPPOE_3COM
  65 #define NG_PPPOE_DLINK          "D-Link"
  66
  67 /**********************************************************************
  68  * Netgraph commands understood by this node type.
  69  * FAIL, SUCCESS, CLOSE and ACNAME are sent by the node rather than received.
  70  ********************************************************************/
  71 enum cmd {
  72         NGM_PPPOE_SET_FLAG = 1,
  73         NGM_PPPOE_CONNECT  = 2, /* Client, Try find this service */
  74         NGM_PPPOE_LISTEN   = 3, /* Server, Await a request for this service */
  75         NGM_PPPOE_OFFER    = 4, /* Server, hook X should respond (*) */
  76         NGM_PPPOE_SUCCESS  = 5, /* State machine connected */
  77         NGM_PPPOE_FAIL     = 6, /* State machine could not connect */
  78         NGM_PPPOE_CLOSE    = 7, /* Session closed down */
  79         NGM_PPPOE_SERVICE  = 8, /* additional Service to advertise (in PADO) */
  80         NGM_PPPOE_ACNAME   = 9, /* AC_NAME for informational purposes */
  81         NGM_PPPOE_GET_STATUS = 10, /* data in/out */
  82         NGM_PPPOE_SESSIONID  = 11,  /* Session_ID for informational purposes */
  83         NGM_PPPOE_SETMODE  = 12, /* set to standard or compat modes */
  84         NGM_PPPOE_GETMODE  = 13, /* see current mode */
  85         NGM_PPPOE_SETENADDR = 14, /* set Ethernet address */
  86 };
  87
  88 /***********************
  89  * Structures passed in the various netgraph command messages.
  90  ***********************/
  91 /* This structure is returned by the NGM_PPPOE_GET_STATUS command */
  92 struct ngpppoestat {
  93         u_int   packets_in;     /* packets in from ethernet */
  94         u_int   packets_out;    /* packets out towards ethernet */
  95 };
  96
  97 /* Keep this in sync with the above structure definition */
  98 #define NG_PPPOESTAT_TYPE_INFO  {                               \
  99           { "packets_in",       &ng_parse_uint_type     },      \
 100           { "packets_out",      &ng_parse_uint_type     },      \
 101           { NULL }                                              \
 102 }
 103
 104 /*
 105  * When this structure is accepted by the NGM_PPPOE_CONNECT command :
 106  * The data field is MANDATORY.
 107  * The session sends out a PADI request for the named service.
 108  *
 109  *
 110  * When this structure is accepted by the NGM_PPPOE_LISTEN command.
 111  * If no service is given this is assumed to accept ALL PADI requests.
 112  * This may at some time take a regexp expression, but not yet.
 113  * Matching PADI requests will be passed up the named hook.
 114  *
 115  *
 116  * When this structure is accepted by the NGM_PPPOE_OFFER command:
 117  * The AC-NAme field is set from that given and a PADI
 118  * packet is expected to arrive from the session control daemon, on the
 119  * named hook. The session will then issue the appropriate PADO
 120  * and begin negotiation.
 121  */
 122 struct ngpppoe_init_data {
 123         char            hook[NG_HOOKSIZ];       /* hook to monitor on */
 124         u_int16_t       data_len;               /* Length of the service name */
 125         char            data[];                 /* init data goes here */
 126 };
 127
 128 /* Keep this in sync with the above structure definition */
 129 #define NG_PPPOE_INIT_DATA_TYPE_INFO    {               \
 130           { "hook",     &ng_parse_hookbuf_type  },      \
 131           { "data",     &ng_parse_sizedstring_type },   \
 132           { NULL }                                      \
 133 }
 134
 135 /*
 136  * This structure is used by the asychronous success and failure messages.
 137  * (to report which hook has failed or connected). The message is sent
 138  * to whoever requested the connection. (close may use this too).
 139  */
 140 struct ngpppoe_sts {
 141         char    hook[NG_HOOKSIZ];       /* hook associated with event session */
 142 };
 143
 144 /* Keep this in sync with the above structure definition */
 145 #define NG_PPPOE_STS_TYPE_INFO          {               \
 146           { "hook",     &ng_parse_hookbuf_type  },      \
 147           { NULL }                                      \
 148 }
 149
 150
 151 /********************************************************************
 152  * Constants and definitions specific to pppoe
 153  ********************************************************************/
 154
 155 #define PPPOE_TIMEOUT_LIMIT 64
 156 #define PPPOE_OFFER_TIMEOUT 16
 157 #define PPPOE_INITIAL_TIMEOUT 2
 158
 159 /* Codes to identify message types */
 160 #define PADI_CODE       0x09
 161 #define PADO_CODE       0x07
 162 #define PADR_CODE       0x19
 163 #define PADS_CODE       0x65
 164 #define PADT_CODE       0xa7
 165
 166 /* Tag identifiers */
 167 #if BYTE_ORDER == BIG_ENDIAN
 168 #define PTT_EOL         (0x0000)
 169 #define PTT_SRV_NAME    (0x0101)
 170 #define PTT_AC_NAME     (0x0102)
 171 #define PTT_HOST_UNIQ   (0x0103)
 172 #define PTT_AC_COOKIE   (0x0104)
 173 #define PTT_VENDOR      (0x0105)
 174 #define PTT_RELAY_SID   (0x0110)
 175 #define PTT_SRV_ERR     (0x0201)
 176 #define PTT_SYS_ERR     (0x0202)
 177 #define PTT_GEN_ERR     (0x0203)
 178
 179 #define ETHERTYPE_PPPOE_DISC    0x8863  /* pppoe discovery packets     */
 180 #define ETHERTYPE_PPPOE_SESS    0x8864  /* pppoe session packets       */
 181 #define ETHERTYPE_PPPOE_3COM_DISC 0x3c12 /* pppoe discovery packets 3com? */
 182 #define ETHERTYPE_PPPOE_3COM_SESS 0x3c13 /* pppoe session packets   3com? */
 183 #else
 184 #define PTT_EOL         (0x0000)
 185 #define PTT_SRV_NAME    (0x0101)
 186 #define PTT_AC_NAME     (0x0201)
 187 #define PTT_HOST_UNIQ   (0x0301)
 188 #define PTT_AC_COOKIE   (0x0401)
 189 #define PTT_VENDOR      (0x0501)
 190 #define PTT_RELAY_SID   (0x1001)
 191 #define PTT_SRV_ERR     (0x0102)
 192 #define PTT_SYS_ERR     (0x0202)
 193 #define PTT_GEN_ERR     (0x0302)
 194
 195 #define ETHERTYPE_PPPOE_DISC    0x6388  /* pppoe discovery packets     */
 196 #define ETHERTYPE_PPPOE_SESS    0x6488  /* pppoe session packets       */
 197 #define ETHERTYPE_PPPOE_3COM_DISC 0x123c /* pppoe discovery packets 3com? */
 198 #define ETHERTYPE_PPPOE_3COM_SESS 0x133c /* pppoe session packets   3com? */
 199 #endif
 200
 201 struct pppoe_tag {
 202         u_int16_t tag_type;
 203         u_int16_t tag_len;
 204         char tag_data[];
 205 }__packed;
 206
 207 struct pppoe_hdr{
 208         u_int8_t ver:4;
 209         u_int8_t type:4;
 210         u_int8_t code;
 211         u_int16_t sid;
 212         u_int16_t length;
 213         struct pppoe_tag tag[];
 214 }__packed;
 215
 216
 217 struct pppoe_full_hdr {
 218         struct  ether_header eh;
 219         struct pppoe_hdr ph;
 220 }__packed;
 221
 222 union   packet {
 223         struct pppoe_full_hdr   pkt_header;
 224         u_int8_t        bytes[2048];
 225 };
 226
 227 struct datatag {
 228         struct pppoe_tag hdr;
 229         u_int8_t        data[PPPOE_SERVICE_NAME_SIZE];
 230 };
 231
 232
 233 /*
 234  * Define the order in which we will place tags in packets
 235  * this may be ignored
 236  */
 237 /* for PADI */
 238 #define TAGI_SVC 0
 239 #define TAGI_HUNIQ 1
 240 /* for PADO */
 241 #define TAGO_ACNAME 0
 242 #define TAGO_SVC 1
 243 #define TAGO_COOKIE 2
 244 #define TAGO_HUNIQ 3
 245 /* for PADR */
 246 #define TAGR_SVC 0
 247 #define TAGR_HUNIQ 1
 248 #define TAGR_COOKIE 2
 249 /* for PADS */
 250 #define TAGS_ACNAME 0
 251 #define TAGS_SVC 1
 252 #define TAGS_COOKIE 2
 253 #define TAGS_HUNIQ 3
 254 /* for PADT */
 255
 256 #endif /* _NETGRAPH_NG_PPPOE_H_ */
 257