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Annotation of XNU/bsd/net/ppp_defs.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /*
        !            23:  * ppp_defs.h - PPP definitions.
        !            24:  *
        !            25:  * Copyright (c) 1994 The Australian National University.
        !            26:  * All rights reserved.
        !            27:  *
        !            28:  * Permission to use, copy, modify, and distribute this software and its
        !            29:  * documentation is hereby granted, provided that the above copyright
        !            30:  * notice appears in all copies.  This software is provided without any
        !            31:  * warranty, express or implied. The Australian National University
        !            32:  * makes no representations about the suitability of this software for
        !            33:  * any purpose.
        !            34:  *
        !            35:  * IN NO EVENT SHALL THE AUSTRALIAN NATIONAL UNIVERSITY BE LIABLE TO ANY
        !            36:  * PARTY FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
        !            37:  * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
        !            38:  * THE AUSTRALIAN NATIONAL UNIVERSITY HAVE BEEN ADVISED OF THE POSSIBILITY
        !            39:  * OF SUCH DAMAGE.
        !            40:  *
        !            41:  * THE AUSTRALIAN NATIONAL UNIVERSITY SPECIFICALLY DISCLAIMS ANY WARRANTIES,
        !            42:  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
        !            43:  * AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
        !            44:  * ON AN "AS IS" BASIS, AND THE AUSTRALIAN NATIONAL UNIVERSITY HAS NO
        !            45:  * OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS,
        !            46:  * OR MODIFICATIONS.
        !            47:  *
        !            48:  */
        !            49: 
        !            50: #ifndef _PPP_DEFS_H_
        !            51: #define _PPP_DEFS_H_
        !            52: 
        !            53: /*
        !            54:  * The basic PPP frame.
        !            55:  */
        !            56: #define PPP_HDRLEN     4       /* octets for standard ppp header */
        !            57: #define PPP_FCSLEN     2       /* octets for FCS */
        !            58: #define PPP_MRU                1500    /* default MRU = max length of info field */
        !            59: 
        !            60: #define PPP_ADDRESS(p) (((u_char *)(p))[0])
        !            61: #define PPP_CONTROL(p) (((u_char *)(p))[1])
        !            62: #define PPP_PROTOCOL(p)        ((((u_char *)(p))[2] << 8) + ((u_char *)(p))[3])
        !            63: 
        !            64: /*
        !            65:  * Significant octet values.
        !            66:  */
        !            67: #define        PPP_ALLSTATIONS 0xff    /* All-Stations broadcast address */
        !            68: #define        PPP_UI          0x03    /* Unnumbered Information */
        !            69: #define        PPP_FLAG        0x7e    /* Flag Sequence */
        !            70: #define        PPP_ESCAPE      0x7d    /* Asynchronous Control Escape */
        !            71: #define        PPP_TRANS       0x20    /* Asynchronous transparency modifier */
        !            72: 
        !            73: /*
        !            74:  * Protocol field values.
        !            75:  */
        !            76: #define PPP_IP         0x21    /* Internet Protocol */
        !            77: #define        PPP_XNS         0x25    /* Xerox NS */
        !            78: #define PPP_AT         0x29    /* AppleTalk Protocol */
        !            79: #define PPP_IPX                0x2b    /* IPX Datagram (RFC1552) */
        !            80: #define        PPP_VJC_COMP    0x2d    /* VJ compressed TCP */
        !            81: #define        PPP_VJC_UNCOMP  0x2f    /* VJ uncompressed TCP */
        !            82: #define PPP_COMP       0xfd    /* compressed packet */
        !            83: #define PPP_IPCP       0x8021  /* IP Control Protocol */
        !            84: #define PPP_ATCP       0x8029  /* AppleTalk Control Protocol */
        !            85: #define PPP_IPXCP      0x802b  /* IPX Control Protocol (RFC1552) */
        !            86: #define PPP_CCP                0x80fd  /* Compression Control Protocol */
        !            87: #define PPP_LCP                0xc021  /* Link Control Protocol */
        !            88: #define PPP_PAP                0xc023  /* Password Authentication Protocol */
        !            89: #define PPP_LQR                0xc025  /* Link Quality Report protocol */
        !            90: #define PPP_CHAP       0xc223  /* Cryptographic Handshake Auth. Protocol */
        !            91: #define PPP_CBCP       0xc029  /* Callback Control Protocol */
        !            92: 
        !            93: /*
        !            94:  * Values for FCS calculations.
        !            95:  */
        !            96: #define PPP_INITFCS    0xffff  /* Initial FCS value */
        !            97: #define PPP_GOODFCS    0xf0b8  /* Good final FCS value */
        !            98: #define PPP_FCS(fcs, c)        (((fcs) >> 8) ^ fcstab[((fcs) ^ (c)) & 0xff])
        !            99: 
        !           100: /*
        !           101:  * Extended asyncmap - allows any character to be escaped.
        !           102:  */
        !           103: typedef u_int32_t      ext_accm[8];
        !           104: 
        !           105: /*
        !           106:  * What to do with network protocol (NP) packets.
        !           107:  */
        !           108: enum NPmode {
        !           109:     NPMODE_PASS,               /* pass the packet through */
        !           110:     NPMODE_DROP,               /* silently drop the packet */
        !           111:     NPMODE_ERROR,              /* return an error */
        !           112:     NPMODE_QUEUE               /* save it up for later. */
        !           113: };
        !           114: 
        !           115: /*
        !           116:  * Statistics.
        !           117:  */
        !           118: struct pppstat {
        !           119:     unsigned int ppp_ibytes;   /* bytes received */
        !           120:     unsigned int ppp_ipackets; /* packets received */
        !           121:     unsigned int ppp_ierrors;  /* receive errors */
        !           122:     unsigned int ppp_obytes;   /* bytes sent */
        !           123:     unsigned int ppp_opackets; /* packets sent */
        !           124:     unsigned int ppp_oerrors;  /* transmit errors */
        !           125: };
        !           126: 
        !           127: struct vjstat {
        !           128:     unsigned int vjs_packets;  /* outbound packets */
        !           129:     unsigned int vjs_compressed; /* outbound compressed packets */
        !           130:     unsigned int vjs_searches; /* searches for connection state */
        !           131:     unsigned int vjs_misses;   /* times couldn't find conn. state */
        !           132:     unsigned int vjs_uncompressedin; /* inbound uncompressed packets */
        !           133:     unsigned int vjs_compressedin; /* inbound compressed packets */
        !           134:     unsigned int vjs_errorin;  /* inbound unknown type packets */
        !           135:     unsigned int vjs_tossed;   /* inbound packets tossed because of error */
        !           136: };
        !           137: 
        !           138: struct ppp_stats {
        !           139:     struct pppstat p;          /* basic PPP statistics */
        !           140:     struct vjstat vj;          /* VJ header compression statistics */
        !           141: };
        !           142: 
        !           143: struct compstat {
        !           144:     unsigned int unc_bytes;    /* total uncompressed bytes */
        !           145:     unsigned int unc_packets;  /* total uncompressed packets */
        !           146:     unsigned int comp_bytes;   /* compressed bytes */
        !           147:     unsigned int comp_packets; /* compressed packets */
        !           148:     unsigned int inc_bytes;    /* incompressible bytes */
        !           149:     unsigned int inc_packets;  /* incompressible packets */
        !           150:     unsigned int ratio;                /* recent compression ratio << 8 */
        !           151: };
        !           152: 
        !           153: struct ppp_comp_stats {
        !           154:     struct compstat c;         /* packet compression statistics */
        !           155:     struct compstat d;         /* packet decompression statistics */
        !           156: };
        !           157: 
        !           158: /*
        !           159:  * The following structure records the time in seconds since
        !           160:  * the last NP packet was sent or received.
        !           161:  */
        !           162: struct ppp_idle {
        !           163:     time_t xmit_idle;          /* time since last NP packet sent */
        !           164:     time_t recv_idle;          /* time since last NP packet received */
        !           165: };
        !           166: 
        !           167: #ifndef __P
        !           168: #ifdef __STDC__
        !           169: #define __P(x) x
        !           170: #else
        !           171: #define __P(x) ()
        !           172: #endif
        !           173: #endif
        !           174: 
        !           175: #endif /* _PPP_DEFS_H_ */

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