kernel/include/net/dhcp.h

   1 /*
   2  *  ZeX/OS
   3  *  Copyright (C) 2009  Martin 'povik' Poviser (martin.povik@gmail.com)
   4  *  Copyright (C) 2010  Martin 'povik' Poviser (martin.povik@gmail.com)
   5  *
   6  *  This program is free software: you can redistribute it and/or modify
   7  *  it under the terms of the GNU General Public License as published by
   8  *  the Free Software Foundation, either version 3 of the License, or
   9  *  (at your option) any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful,
  12  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  *  GNU General Public License for more details.
  15  *
  16  *  You should have received a copy of the GNU General Public License
  17  *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18  */
  19
  20
  21 #ifndef _DHCP_H
  22 #define _DHCP_H
  23
  24 #include <net/if.h>
  25 #include <net/ip.h>
  26
  27 /* error codes */
  28 #define DHCP_BAD_PARAMETERS                     -1
  29 #define DHCP_OUT_OF_MEMORY                      -2
  30 #define DHCP_SOCKET_FAILED                      -3
  31 #define DHCP_CONNECT_FAILED                     -4
  32 #define DHCP_CANT_SEND_REQUEST                  -5
  33 #define DHCP_CANT_RECV_RESPONSE                 -6
  34 #define DHCP_BAD_PACKET                         -7
  35 #define DHCP_SRV_DIDNT_UNDERSTAND               -8
  36
  37 /* magic cookie */
  38 #define DHCP_MAGIC_COOKIE                       0x63538263
  39
  40 /* message types */
  41 #define DHCP_MESSAGE_TYPE_BOOTREQUEST           0x01
  42 #define DHCP_MESSAGE_TYPE_BOOTREPLY             0x02
  43
  44 /* options types + values*/
  45 #define DHCP_OPTION_PAD                         0x00
  46 #define DHCP_OPTION_SUBNET_MASK                 0x01
  47 #define DHCP_OPTION_ROUTER                      0x03
  48 #define DHCP_OPTION_DNS_SERVER                  0x06
  49 #define DHCP_OPTION_HOSTNAME                    12
  50 #define DHCP_OPTION_REQUESTED_IP                50
  51 #define DHCP_OPTION_LEASE_TIME                  51
  52 #define DHCP_OPTION_MESSAGE_TYPE                53
  53 #define         DHCP_OPTION_VALUE_DHCPDISCOVER  0x01
  54 #define         DHCP_OPTION_VALUE_DHCPOFFER     0x02
  55 #define         DHCP_OPTION_VALUE_DHCPREQUEST   0x03
  56 #define         DHCP_OPTION_VALUE_DHCPDECLINE   0x04
  57 #define         DHCP_OPTION_VALUE_DHCPACK       0x05
  58 #define         DHCP_OPTION_VALUE_DHCPNAK       0x06
  59 #define         DHCP_OPTION_VALUE_DHCPRELEASE   0x07
  60 #define         DHCP_OPTION_VALUE_DHCPINFORM    0x08
  61 #define DHCP_OPTION_DHCP_SERVER                 54
  62 #define DHCP_OPTION_PARAMETER_REQUEST_LIST      55
  63 #define         DHCP_OPTION_VALUE_SUBNET_MASK   0x01
  64 #define         DHCP_OPTION_VALUE_ROUTER        0x03
  65 #define         DHCP_OPTION_VALUE_DNS_SERVER    0x06
  66 #define         DHCP_OPTION_VALUE_DOMAIN_NAME   0x0f
  67 #define DHCP_OPTION_CLIENT_IDENTIFIER           61
  68 #define DHCP_OPTION_END                         0xff
  69
  70 typedef struct dhcp_bootp_header_t {
  71         char op;
  72         char htype;
  73         char hlen;
  74         char hops;
  75         unsigned xid;
  76         unsigned short secs;
  77         unsigned short flags;
  78         net_ipv4 ciaddr;
  79         net_ipv4 yiaddr;
  80         net_ipv4 siaddr;
  81         net_ipv4 giaddr;
  82         char chaddr[16];
  83         char sname[64];
  84         char file[128];
  85         unsigned int mag_cookie;
  86 } dhcp_bootp_header_t;
  87
  88 typedef union dhcp_request_t {
  89         unsigned char *buffer;
  90         dhcp_bootp_header_t *bootp_header;
  91 } dhcp_request_t;
  92
  93 extern int dhcp_config_if (netif_t *netif);
  94
  95 #endif