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

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