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Annotation of XNU/bsd/net/tokendefs.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: /*     Copyright (c) 1991 NeXT Computer, Inc.  All rights reserved. 
        !            23:  *
        !            24:  * tokendefs.h - Token-Ring MAC header definitions.  
        !            25:  *
        !            26:  * HISTORY
        !            27:  * 8-Oct-92  Joel Greenblatt at NeXT
        !            28:  *     created 
        !            29:  */
        !            30: #ifndef _NET_TOKENDEFS_H_
        !            31: #define _NET_TOKENDEFS_H_
        !            32: 
        !            33: 
        !            34: #include <sys/errno.h>
        !            35: 
        !            36: /*
        !            37:  * Token ring address - 6 octets
        !            38:  */
        !            39: #define NUM_TR_ADDR_BYTES      6
        !            40: 
        !            41: struct token_addr {
        !            42:        u_char  token_addr_octet[NUM_TR_ADDR_BYTES];
        !            43: };
        !            44: 
        !            45: #define ta_byte token_addr_octet
        !            46: 
        !            47: typedef struct token_addr token_addr_t;
        !            48: 
        !            49: /*
        !            50:  * MAC header size
        !            51:  */
        !            52: #define MAC_HDR_MIN    (1+1+6+6)               /* MAC hdr size w/o ri field */
        !            53: #define MAC_HDR_MAX    (MAC_HDR_MIN + RISIZE)  /* MAC hdr size w/max ri */
        !            54: 
        !            55: /*
        !            56:  * The maximum size of the MAC information field as spec'd by ISO 8802/5.
        !            57:  */
        !            58: #define MAC_INFO_4MB   4472    /* max size of mac info field -- 4 Mbs */
        !            59: #define MAC_INFO_16MB  17800   /* max size of mac info field -- 16 Mbs */
        !            60: 
        !            61: /*
        !            62:  * Maximum DMA packet sizes for 4 & 16 Mbit assuming no CRC.
        !            63:  */ 
        !            64: #define MAC_DMA_MAX_4MB          (MAC_HDR_MAX + MAC_INFO_4MB)
        !            65: #define MAC_DMA_MAX_16MB  (MAC_HDR_MAX + MAC_INFO_16MB)
        !            66: 
        !            67: /* 
        !            68:  * Routing control field.
        !            69:  */
        !            70: typedef struct {
        !            71: 
        !            72: #if    __BIG_ENDIAN__
        !            73:           unsigned char bcast  : 3,            /* broadcast */
        !            74:                         len    : 5;            /* length */
        !            75:           unsigned char dir    : 1,            /* direction */
        !            76:                         longf  : 3,            /* longest frame */
        !            77:                         rsrvd  : 4;            /* reserved */
        !            78: 
        !            79: #elif  __LITTLE_ENDIAN__
        !            80:          unsigned char  len    : 5,            /* length */
        !            81:                         bcast  : 3;            /* broadcast */
        !            82:          unsigned char  rsrvd  : 4,            /* reserved */
        !            83:                         longf  : 3,            /* longest frame */
        !            84:                         dir    : 1;            /* direction */
        !            85: #else
        !            86:    error
        !            87: #endif
        !            88: } routing_ctl_t;               
        !            89: 
        !            90: /* bcast field ... */
        !            91: #define  BI_SPECIFIC   0       /* b'0xx': non-broadcast (specific route) */
        !            92: #define  BI_AR_BCAST   4       /* b'10x': all-routes broadcast */
        !            93: #define  BI_SR_BCAST   6       /* b'11x': single-route broadcast */
        !            94: 
        !            95: /* 
        !            96:  * longf field 
        !            97:  */
        !            98: #define  LF_S516       0
        !            99: #define  LF_S1500      1
        !           100: #define  LF_S2052      2
        !           101: #define  LF_S4472      3
        !           102: #define  LF_S8144      4
        !           103: #define  LF_S11407     5
        !           104: #define  LF_S17800     6
        !           105: #define  LF_BCAST      7       /* All-routes broadcast */
        !           106: 
        !           107: #define LFB_4MB                LF_S4472        /* encoded max info -- 4 Mb */
        !           108: #define LFB_16MB       LF_S17800       /* encoded max info -- 16 Mb */
        !           109: 
        !           110: /*
        !           111:  * Source Routing field (2-18 bytes, must be even)
        !           112:  */
        !           113: 
        !           114: #define RISIZE         18      /* max size (bytes) of 802.5 routing field */
        !           115: 
        !           116: typedef        struct  {
        !           117:        routing_ctl_t   rc;                      
        !           118:        u_char          sn[RISIZE-sizeof(routing_ctl_t)];   
        !           119: } sroute_t;
        !           120: 
        !           121: /*
        !           122:  * Token Ring MAC header  (IEEE 802.5, ISO 8802/5)
        !           123:  */
        !           124: 
        !           125: #define TR_DA_SIZE     6
        !           126: 
        !           127: typedef        struct  {
        !           128:        u_char          ac;             /* PPPTMRRR;  PPP = token priority */
        !           129:        u_char          fc;             /* FFrrZZZZ;  FF = frame type */
        !           130: #define        TR_FC_MASK      0xc0            /* mask for frame-type */
        !           131: #define        TR_FC_MAC       0x00            /* frame-type = mac frame */
        !           132: #define        TR_FC_DATA      0x40            /* frame-type = non-mac (data frame) */
        !           133:        u_char          da[TR_DA_SIZE]; /* destination address */
        !           134:        u_char          sa[TR_DA_SIZE]; /* source address */
        !           135: #define TR_RII         0x80            /* routing info indicator bit */
        !           136:        sroute_t        ri;             /* routing information field */
        !           137: } tokenHeader_t;
        !           138: 
        !           139: /*
        !           140:  * token-ring netif definitions
        !           141:  */
        !           142: #define IFTYPE_TOKENRING       "4/16Mb Token-Ring"     /* netif type-string */
        !           143: 
        !           144: /*
        !           145:  * Error codes
        !           146:  */
        !           147: #define        TRINGDOWN       ENETDOWN        /* interface down */
        !           148: #define TNOBUFS                ENOBUFS         /* transmit queue full error */
        !           149: #define TBADDA         EINVAL          /* bad dest addr */
        !           150: #define TBADFSIZE      EMSGSIZE        /* bad frame size */
        !           151: 
        !           152: #endif /* ! _NET_TOKENDEFS_H_ */

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