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Annotation of XNU/bsd/netinet/bootp.h, revision 1.1.1.1

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:  * Bootstrap Protocol (BOOTP).  RFC 951.
                     24:  */
                     25: /*
                     26:  * HISTORY
                     27:  *
                     28:  * 14 May 1992 ? at NeXT
                     29:  *     Added correct padding to struct nextvend.  This is
                     30:  *     needed for the i386 due to alignment differences wrt
                     31:  *     the m68k.  Also adjusted the size of the array fields
                     32:  *     because the NeXT vendor area was overflowing the bootp
                     33:  *     packet.
                     34:  */
                     35: 
                     36: #define iaddr_t struct in_addr
                     37: 
                     38: struct bootp {
                     39:        u_char  bp_op;          /* packet opcode type */
                     40: #define        BOOTREQUEST     1
                     41: #define        BOOTREPLY       2
                     42:        u_char  bp_htype;       /* hardware addr type */
                     43:        u_char  bp_hlen;        /* hardware addr length */
                     44:        u_char  bp_hops;        /* gateway hops */
                     45:        u_long  bp_xid;         /* transaction ID */
                     46:        u_short bp_secs;        /* seconds since boot began */  
                     47:        u_short bp_unused;
                     48:        iaddr_t bp_ciaddr;      /* client IP address */
                     49:        iaddr_t bp_yiaddr;      /* 'your' IP address */
                     50:        iaddr_t bp_siaddr;      /* server IP address */
                     51:        iaddr_t bp_giaddr;      /* gateway IP address */
                     52:        u_char  bp_chaddr[16];  /* client hardware address */
                     53:        u_char  bp_sname[64];   /* server host name */
                     54:        u_char  bp_file[128];   /* boot file name */
                     55:        u_char  bp_vend[64];    /* vendor-specific area */
                     56: };
                     57: 
                     58: /*
                     59:  * UDP port numbers, server and client.
                     60:  */
                     61: #define        IPPORT_BOOTPS           67
                     62: #define        IPPORT_BOOTPC           68
                     63: 
                     64: /*
                     65:  * "vendor" data permitted for Stanford boot clients.
                     66:  */
                     67: struct vend {
                     68:        u_char  v_magic[4];     /* magic number */
                     69:        u_long  v_flags;        /* flags/opcodes, etc. */
                     70:        u_char  v_unused[56];   /* currently unused */
                     71: };
                     72: #define        VM_STANFORD     "STAN"  /* v_magic for Stanford */
                     73: 
                     74: /* v_flags values */
                     75: #define        VF_PCBOOT       1       /* an IBMPC or Mac wants environment info */
                     76: #define        VF_HELP         2       /* help me, I'm not registered */
                     77: 
                     78: #define        NVMAXTEXT       55      /* don't change this, it just fits RFC951 */
                     79: struct nextvend {
                     80:        u_char nv_magic[4];     /* Magic number for vendor specificity */
                     81:        u_char nv_version;      /* NeXT protocol version */
                     82:        /*
                     83:         * Round the beginning
                     84:         * of the union to a 16
                     85:         * bit boundary due to
                     86:         * struct/union alignment
                     87:         * on the m68k.
                     88:         */
                     89:        unsigned short  :0;     
                     90:        union {
                     91:                u_char NV0[58];
                     92:                struct {
                     93:                        u_char NV1_opcode;      /* opcode - Version 1 */
                     94:                        u_char NV1_xid; /* transcation id */
                     95:                        u_char NV1_text[NVMAXTEXT];     /* text */
                     96:                        u_char NV1_null;        /* null terminator */
                     97:                } NV1;
                     98:        } nv_U;
                     99: };
                    100: #define        nv_unused       nv_U.NV0
                    101: #define        nv_opcode       nv_U.NV1.NV1_opcode
                    102: #define        nv_xid          nv_U.NV1.NV1_xid
                    103: #define        nv_text         nv_U.NV1.NV1_text
                    104: #define nv_null                nv_U.NV1.NV1_null
                    105: 
                    106: /* Magic number */
                    107: #define VM_NEXT                "NeXT"  /* v_magic for NeXT, Inc. */
                    108: 
                    109: /* Opcodes */
                    110: #define        BPOP_OK         0
                    111: #define BPOP_QUERY     1
                    112: #define        BPOP_QUERY_NE   2
                    113: #define        BPOP_ERROR      3
                    114: 
                    115: struct bootp_packet {
                    116:     struct ip bp_ip;
                    117:     struct udphdr bp_udp;
                    118:     struct bootp bp_bootp;
                    119: };
                    120: 
                    121: #define        BOOTP_PKTSIZE (sizeof (struct bootp_packet))
                    122: 
                    123: /* backoffs must be masks */
                    124: #define        BOOTP_MIN_BACKOFF       0x7ff           /* 2.048 sec */
                    125: #define        BOOTP_MAX_BACKOFF       0xffff          /* 65.535 sec */
                    126: #define        BOOTP_RETRY             6               /* # retries */
                    127: 

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