| /****************************************************************************** |
| * Copyright (c) 2004, 2008 IBM Corporation |
| * All rights reserved. |
| * This program and the accompanying materials |
| * are made available under the terms of the BSD License |
| * which accompanies this distribution, and is available at |
| * http://www.opensource.org/licenses/bsd-license.php |
| * |
| * Contributors: |
| * IBM Corporation - initial implementation |
| *****************************************************************************/ |
| |
| #ifndef _DHCP_H_ |
| #define _DHCP_H_ |
| |
| #include <stdint.h> |
| #include "tftp.h" |
| |
| /** \struct btphdr |
| * A header for BootP/DHCP-messages. |
| * For more information see RFC 951 / RFC 2131. |
| */ |
| struct btphdr { |
| uint8_t op; /**< Identifies is it request (1) or reply (2) */ |
| uint8_t htype; /**< HW address type (ethernet usually) */ |
| uint8_t hlen; /**< HW address length */ |
| uint8_t hops; /**< This info used by relay agents (not used) */ |
| uint32_t xid; /**< This ID is used to match queries and replies */ |
| uint16_t secs; /**< Unused */ |
| uint16_t unused; /**< Unused */ |
| uint32_t ciaddr; /**< Client IP address (if client knows it) */ |
| uint32_t yiaddr; /**< "Your" (client) IP address */ |
| uint32_t siaddr; /**< Next server IP address (TFTP server IP) */ |
| uint32_t giaddr; /**< Gateway IP address (used by relay agents) */ |
| uint8_t chaddr[16]; /**< Client HW address */ |
| uint8_t sname[64]; /**< Server host name (TFTP server name) */ |
| uint8_t file[128]; /**< Boot file name */ |
| uint8_t vend[64]; /**< Optional parameters field (DHCP-options) */ |
| }; |
| |
| void dhcpv4_generate_transaction_id(void); |
| int bootp(char *ret_buffer, filename_ip_t *, unsigned int); |
| int dhcpv4(char *ret_buffer, filename_ip_t *); |
| void dhcp_send_release(int fd); |
| |
| /* Handles DHCP-packets, which are detected by receive_ether. */ |
| extern int8_t handle_dhcp(int fd, uint8_t * packet, int32_t packetsize); |
| |
| #endif |
