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_HEADER_START@
  10  *
  11  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
  12  *
  13  * This file contains Original Code and/or Modifications of Original Code
  14  * as defined in and that are subject to the Apple Public Source License
  15  * Version 2.0 (the 'License'). You may not use this file except in
  16  * compliance with the License. Please obtain a copy of the License at
  17  * http://www.opensource.apple.com/apsl/ and read it before using this
  18  * file.
  19  *
  20  * The Original Code and all software distributed under the License are
  21  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  22  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  23  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  24  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  25  * Please see the License for the specific language governing rights and
  26  * limitations under the License.
  27  *
  28  * @APPLE_LICENSE_HEADER_END@
  29  */
  30 /*
  31  * dhcp.h
  32  * - definitions for DHCP (as specified in RFC2132)
  33  */
  34 #include <sys/types.h>
  35 #include <netinet/in.h>
  36 #include <netinet/in_systm.h>
  37 #include <netinet/ip.h>
  38 #include <netinet/udp.h>
  39
  40 struct dhcp {
  41     u_char              dp_op;          /* packet opcode type */
  42     u_char              dp_htype;       /* hardware addr type */
  43     u_char              dp_hlen;        /* hardware addr length */
  44     u_char              dp_hops;        /* gateway hops */
  45     u_int32_t           dp_xid;         /* transaction ID */
  46     u_int16_t           dp_secs;        /* seconds since boot began */
  47     u_int16_t           dp_flags;       /* flags */
  48     struct in_addr      dp_ciaddr;      /* client IP address */
  49     struct in_addr      dp_yiaddr;      /* 'your' IP address */
  50     struct in_addr      dp_siaddr;      /* server IP address */
  51     struct in_addr      dp_giaddr;      /* gateway IP address */
  52     u_char              dp_chaddr[16];  /* client hardware address */
  53     u_char              dp_sname[64];   /* server host name */
  54     u_char              dp_file[128];   /* boot file name */
  55     u_char              dp_options[0];  /* variable-length options field */
  56 };
  57
  58 struct dhcp_packet {
  59     struct ip           ip;
  60     struct udphdr       udp;
  61     struct dhcp         dhcp;
  62 };
  63
  64 #define DHCP_PACKET_OPTIONS_MIN 312
  65 #define DHCP_PACKET_MIN         (sizeof(struct dhcp) + DHCP_PACKET_OPTIONS_MIN)
  66
  67 /* dhcp message types */
  68 #define DHCPDISCOVER    1
  69 #define DHCPOFFER       2
  70 #define DHCPREQUEST     3
  71 #define DHCPDECLINE     4
  72 #define DHCPACK         5
  73 #define DHCPNAK         6
  74 #define DHCPRELEASE     7
  75 #define DHCPINFORM      8
  76
  77 typedef int32_t                 dhcp_time_secs_t; /* absolute time */
  78 typedef int32_t                 dhcp_lease_t;     /* relative time */
  79 #define dhcp_time_hton          htonl
  80 #define dhcp_time_ntoh          ntohl
  81 #define dhcp_lease_hton         htonl
  82 #define dhcp_lease_ntoh         ntohl
  83
  84 #define DHCP_INFINITE_LEASE     ((dhcp_lease_t)-1)
  85 #define DHCP_INFINITE_TIME      ((dhcp_time_secs_t)-1)
  86
  87 #define DHCP_FLAGS_BROADCAST    ((u_short)0x0001)
  88
  89 #endif /* _NETINET_DHCP_H */