bsd/netinet/dhcp.h

   1
   2 #ifndef _NETINET_DHCP_H
   3 #define _NETINET_DHCP_H
   4 #include <sys/appleapiopts.h>
   5
   6 /*
   7  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   8  *
   9  * @APPLE_LICENSE_OSREFERENCE_HEADER_START@
  10  *
  11  * This file contains Original Code and/or Modifications of Original Code
  12  * as defined in and that are subject to the Apple Public Source License
  13  * Version 2.0 (the 'License'). You may not use this file except in
  14  * compliance with the License.  The rights granted to you under the
  15  * License may not be used to create, or enable the creation or
  16  * redistribution of, unlawful or unlicensed copies of an Apple operating
  17  * system, or to circumvent, violate, or enable the circumvention or
  18  * violation of, any terms of an Apple operating system software license
  19  * agreement.
  20  *
  21  * Please obtain a copy of the License at
  22  * http://www.opensource.apple.com/apsl/ and read it before using this
  23  * file.
  24  *
  25  * The Original Code and all software distributed under the License are
  26  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  27  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  28  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  29  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  30  * Please see the License for the specific language governing rights and
  31  * limitations under the License.
  32  *
  33  * @APPLE_LICENSE_OSREFERENCE_HEADER_END@
  34  */
  35 /*
  36  * dhcp.h
  37  * - definitions for DHCP (as specified in RFC2132)
  38  */
  39 #include <sys/types.h>
  40 #include <netinet/in.h>
  41 #include <netinet/in_systm.h>
  42 #include <netinet/ip.h>
  43 #include <netinet/udp.h>
  44
  45 struct dhcp {
  46     u_char              dp_op;          /* packet opcode type */
  47     u_char              dp_htype;       /* hardware addr type */
  48     u_char              dp_hlen;        /* hardware addr length */
  49     u_char              dp_hops;        /* gateway hops */
  50     u_int32_t           dp_xid;         /* transaction ID */
  51     u_int16_t           dp_secs;        /* seconds since boot began */
  52     u_int16_t           dp_flags;       /* flags */
  53     struct in_addr      dp_ciaddr;      /* client IP address */
  54     struct in_addr      dp_yiaddr;      /* 'your' IP address */
  55     struct in_addr      dp_siaddr;      /* server IP address */
  56     struct in_addr      dp_giaddr;      /* gateway IP address */
  57     u_char              dp_chaddr[16];  /* client hardware address */
  58     u_char              dp_sname[64];   /* server host name */
  59     u_char              dp_file[128];   /* boot file name */
  60     u_char              dp_options[0];  /* variable-length options field */
  61 };
  62
  63 struct dhcp_packet {
  64     struct ip           ip;
  65     struct udphdr       udp;
  66     struct dhcp         dhcp;
  67 };
  68
  69 #define DHCP_PACKET_OPTIONS_MIN 312
  70 #define DHCP_PACKET_MIN         (sizeof(struct dhcp) + DHCP_PACKET_OPTIONS_MIN)
  71
  72 /* dhcp message types */
  73 #define DHCPDISCOVER    1
  74 #define DHCPOFFER       2
  75 #define DHCPREQUEST     3
  76 #define DHCPDECLINE     4
  77 #define DHCPACK         5
  78 #define DHCPNAK         6
  79 #define DHCPRELEASE     7
  80 #define DHCPINFORM      8
  81
  82 typedef int32_t                 dhcp_time_secs_t; /* absolute time */
  83 typedef int32_t                 dhcp_lease_t;     /* relative time */
  84 #define dhcp_time_hton          htonl
  85 #define dhcp_time_ntoh          ntohl
  86 #define dhcp_lease_hton         htonl
  87 #define dhcp_lease_ntoh         ntohl
  88
  89 #define DHCP_INFINITE_LEASE     ((dhcp_lease_t)-1)
  90 #define DHCP_INFINITE_TIME      ((dhcp_time_secs_t)-1)
  91
  92 #define DHCP_FLAGS_BROADCAST    ((u_short)0x0001)
  93
  94 #endif /* _NETINET_DHCP_H */