usr/src/boot/lib/libstand/bootp.h

   1 /*      $NetBSD: bootp.h,v 1.4 1997/09/06 13:55:57 drochner Exp $       */
   2
   3 /*
   4  * Bootstrap Protocol (BOOTP).  RFC951 and RFC1048.
   5  *
   6  * This file specifies the "implementation-independent" BOOTP protocol
   7  * information which is common to both client and server.
   8  *
   9  * Copyright 1988 by Carnegie Mellon.
  10  *
  11  * Permission to use, copy, modify, and distribute this program for any
  12  * purpose and without fee is hereby granted, provided that this copyright
  13  * and permission notice appear on all copies and supporting documentation,
  14  * the name of Carnegie Mellon not be used in advertising or publicity
  15  * pertaining to distribution of the program without specific prior
  16  * permission, and notice be given in supporting documentation that copying
  17  * and distribution is by permission of Carnegie Mellon and Stanford
  18  * University.  Carnegie Mellon makes no representations about the
  19  * suitability of this software for any purpose.  It is provided "as is"
  20  * without express or implied warranty.
  21  */
  22
  23 #include <netinet/in.h>
  24
  25 #ifndef _BOOTP_H_
  26 #define _BOOTP_H_
  27
  28 struct bootp {
  29         unsigned char   bp_op;          /* packet opcode type */
  30         unsigned char   bp_htype;       /* hardware addr type */
  31         unsigned char   bp_hlen;        /* hardware addr length */
  32         unsigned char   bp_hops;        /* gateway hops */
  33         unsigned int    bp_xid;         /* transaction ID */
  34         unsigned short  bp_secs;        /* seconds since boot began */
  35         unsigned short  bp_flags;
  36         struct in_addr  bp_ciaddr;      /* client IP address */
  37         struct in_addr  bp_yiaddr;      /* 'your' IP address */
  38         struct in_addr  bp_siaddr;      /* server IP address */
  39         struct in_addr  bp_giaddr;      /* gateway IP address */
  40         unsigned char   bp_chaddr[16];  /* client hardware address */
  41         unsigned char   bp_sname[64];   /* server host name */
  42         unsigned char   bp_file[128];   /* boot file name */
  43 #ifdef SUPPORT_DHCP
  44 #define BOOTP_VENDSIZE 312
  45 #else
  46 #define BOOTP_VENDSIZE 64
  47 #endif
  48         unsigned char   bp_vend[BOOTP_VENDSIZE];        /* vendor-specific area */
  49 };
  50
  51 /*
  52  * UDP port numbers, server and client.
  53  */
  54 #define IPPORT_BOOTPS           67
  55 #define IPPORT_BOOTPC           68
  56
  57 #define BOOTREPLY               2
  58 #define BOOTREQUEST             1
  59
  60
  61 /*
  62  * Vendor magic cookie (v_magic) for CMU
  63  */
  64 #define VM_CMU          "CMU"
  65
  66 /*
  67  * Vendor magic cookie (v_magic) for RFC1048
  68  */
  69 #define VM_RFC1048      { 99, 130, 83, 99 }
  70
  71 \f
  72
  73 /*
  74  * RFC1048 tag values used to specify what information is being supplied in
  75  * the vendor field of the packet.
  76  */
  77
  78 #define TAG_PAD                 ((unsigned char)   0)
  79 #define TAG_SUBNET_MASK         ((unsigned char)   1)
  80 #define TAG_TIME_OFFSET         ((unsigned char)   2)
  81 #define TAG_GATEWAY             ((unsigned char)   3)
  82 #define TAG_TIME_SERVER         ((unsigned char)   4)
  83 #define TAG_NAME_SERVER         ((unsigned char)   5)
  84 #define TAG_DOMAIN_SERVER       ((unsigned char)   6)
  85 #define TAG_LOG_SERVER          ((unsigned char)   7)
  86 #define TAG_COOKIE_SERVER       ((unsigned char)   8)
  87 #define TAG_LPR_SERVER          ((unsigned char)   9)
  88 #define TAG_IMPRESS_SERVER      ((unsigned char)  10)
  89 #define TAG_RLP_SERVER          ((unsigned char)  11)
  90 #define TAG_HOSTNAME            ((unsigned char)  12)
  91 #define TAG_BOOTSIZE            ((unsigned char)  13)
  92 #define TAG_DUMPFILE            ((unsigned char)  14)
  93 #define TAG_DOMAINNAME          ((unsigned char)  15)
  94 #define TAG_SWAPSERVER          ((unsigned char)  16)
  95 #define TAG_ROOTPATH            ((unsigned char)  17)
  96 #define TAG_INTF_MTU            ((unsigned char)  26)
  97
  98 #ifdef SUPPORT_DHCP
  99 #define TAG_REQ_ADDR            ((unsigned char)  50)
 100 #define TAG_LEASETIME           ((unsigned char)  51)
 101 #define TAG_OVERLOAD            ((unsigned char)  52)
 102 #define TAG_DHCP_MSGTYPE        ((unsigned char)  53)
 103 #define TAG_SERVERID            ((unsigned char)  54)
 104 #define TAG_PARAM_REQ           ((unsigned char)  55)
 105 #define TAG_MSG                 ((unsigned char)  56)
 106 #define TAG_MAXSIZE             ((unsigned char)  57)
 107 #define TAG_T1                  ((unsigned char)  58)
 108 #define TAG_T2                  ((unsigned char)  59)
 109 #define TAG_CLASSID             ((unsigned char)  60)
 110 #define TAG_CLIENTID            ((unsigned char)  61)
 111 #endif
 112
 113 #define TAG_END                 ((unsigned char) 255)
 114
 115 #ifdef SUPPORT_DHCP
 116 #define DHCPDISCOVER 1
 117 #define DHCPOFFER 2
 118 #define DHCPREQUEST 3
 119 #define DHCPDECLINE 4
 120 #define DHCPACK 5
 121 #define DHCPNAK 6
 122 #define DHCPRELEASE 7
 123 #endif
 124
 125 /*
 126  * bootp flags
 127  */
 128 #define BOOTP_NONE              0x0000          /* No flags */
 129 #define BOOTP_PXE               0x0001          /* Booting from PXE. */
 130
 131 /*
 132  * "vendor" data permitted for CMU bootp clients.
 133  */
 134
 135 struct cmu_vend {
 136         unsigned char   v_magic[4];     /* magic number */
 137         unsigned int    v_flags;        /* flags/opcodes, etc. */
 138         struct in_addr  v_smask;        /* Subnet mask */
 139         struct in_addr  v_dgate;        /* Default gateway */
 140         struct in_addr  v_dns1, v_dns2; /* Domain name servers */
 141         struct in_addr  v_ins1, v_ins2; /* IEN-116 name servers */
 142         struct in_addr  v_ts1, v_ts2;   /* Time servers */
 143         unsigned char   v_unused[25];   /* currently unused */
 144 };
 145
 146
 147 /* v_flags values */
 148 #define VF_SMASK        1       /* Subnet mask field contains valid data */
 149
 150 /* cached bootp response/dhcp ack */
 151 extern struct bootp *bootp_response;
 152
 153 int     dhcp_try_rfc1048(uint8_t *cp, size_t len);
 154
 155 #endif /* _BOOTP_H_ */