mirror of
https://github.com/esp8266/Arduino.git
synced 2025-10-30 04:26:50 +03:00
a1e59e9c01
* update to lwIP-2.1.0rc1: partial SACK support fix #4176 * hash fix * get some flash back due to mistake in conf (fragmentation & reassembly was incorrectly enabled) (ahah I scared you) * add missing include files * update to lwip-2.1.0(release) + remove unused lwIP's include files * lwIP release 2.1.0, SACK is now default, bigger, no-SACK is selectable * fix ldscript * pio * rename 'sack' option to 'feat'ure option, + IP fragmentation/reassembly * merge, fix pio * change internal/hidden string * pio: more lwip2 configuration: + without sack for no change in flash footprint
179 lines
6.2 KiB
C
179 lines
6.2 KiB
C
/**
|
|
* @file
|
|
* DHCP protocol definitions
|
|
*/
|
|
|
|
/*
|
|
* Copyright (c) 2001-2004 Leon Woestenberg <leon.woestenberg@gmx.net>
|
|
* Copyright (c) 2001-2004 Axon Digital Design B.V., The Netherlands.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without modification,
|
|
* are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
|
|
* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
|
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
|
|
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
|
|
* OF SUCH DAMAGE.
|
|
*
|
|
* This file is part of the lwIP TCP/IP stack.
|
|
*
|
|
* Author: Leon Woestenberg <leon.woestenberg@gmx.net>
|
|
*
|
|
*/
|
|
#ifndef LWIP_HDR_PROT_DHCP_H
|
|
#define LWIP_HDR_PROT_DHCP_H
|
|
|
|
#include "lwip/opt.h"
|
|
#include "lwip/arch.h"
|
|
#include "lwip/prot/ip4.h"
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/* DHCP message item offsets and length */
|
|
#define DHCP_CHADDR_LEN 16U
|
|
#define DHCP_SNAME_OFS 44U
|
|
#define DHCP_SNAME_LEN 64U
|
|
#define DHCP_FILE_OFS 108U
|
|
#define DHCP_FILE_LEN 128U
|
|
#define DHCP_MSG_LEN 236U
|
|
#define DHCP_OPTIONS_OFS (DHCP_MSG_LEN + 4U) /* 4 byte: cookie */
|
|
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/bpstruct.h"
|
|
#endif
|
|
PACK_STRUCT_BEGIN
|
|
/** minimum set of fields of any DHCP message */
|
|
struct dhcp_msg
|
|
{
|
|
PACK_STRUCT_FLD_8(u8_t op);
|
|
PACK_STRUCT_FLD_8(u8_t htype);
|
|
PACK_STRUCT_FLD_8(u8_t hlen);
|
|
PACK_STRUCT_FLD_8(u8_t hops);
|
|
PACK_STRUCT_FIELD(u32_t xid);
|
|
PACK_STRUCT_FIELD(u16_t secs);
|
|
PACK_STRUCT_FIELD(u16_t flags);
|
|
PACK_STRUCT_FLD_S(ip4_addr_p_t ciaddr);
|
|
PACK_STRUCT_FLD_S(ip4_addr_p_t yiaddr);
|
|
PACK_STRUCT_FLD_S(ip4_addr_p_t siaddr);
|
|
PACK_STRUCT_FLD_S(ip4_addr_p_t giaddr);
|
|
PACK_STRUCT_FLD_8(u8_t chaddr[DHCP_CHADDR_LEN]);
|
|
PACK_STRUCT_FLD_8(u8_t sname[DHCP_SNAME_LEN]);
|
|
PACK_STRUCT_FLD_8(u8_t file[DHCP_FILE_LEN]);
|
|
PACK_STRUCT_FIELD(u32_t cookie);
|
|
#define DHCP_MIN_OPTIONS_LEN 68U
|
|
/** make sure user does not configure this too small */
|
|
#if ((defined(DHCP_OPTIONS_LEN)) && (DHCP_OPTIONS_LEN < DHCP_MIN_OPTIONS_LEN))
|
|
# undef DHCP_OPTIONS_LEN
|
|
#endif
|
|
/** allow this to be configured in lwipopts.h, but not too small */
|
|
#if (!defined(DHCP_OPTIONS_LEN))
|
|
/** set this to be sufficient for your options in outgoing DHCP msgs */
|
|
# define DHCP_OPTIONS_LEN DHCP_MIN_OPTIONS_LEN
|
|
#endif
|
|
PACK_STRUCT_FLD_8(u8_t options[DHCP_OPTIONS_LEN]);
|
|
} PACK_STRUCT_STRUCT;
|
|
PACK_STRUCT_END
|
|
#ifdef PACK_STRUCT_USE_INCLUDES
|
|
# include "arch/epstruct.h"
|
|
#endif
|
|
|
|
|
|
/* DHCP client states */
|
|
typedef enum {
|
|
DHCP_STATE_OFF = 0,
|
|
DHCP_STATE_REQUESTING = 1,
|
|
DHCP_STATE_INIT = 2,
|
|
DHCP_STATE_REBOOTING = 3,
|
|
DHCP_STATE_REBINDING = 4,
|
|
DHCP_STATE_RENEWING = 5,
|
|
DHCP_STATE_SELECTING = 6,
|
|
DHCP_STATE_INFORMING = 7,
|
|
DHCP_STATE_CHECKING = 8,
|
|
DHCP_STATE_PERMANENT = 9, /* not yet implemented */
|
|
DHCP_STATE_BOUND = 10,
|
|
DHCP_STATE_RELEASING = 11, /* not yet implemented */
|
|
DHCP_STATE_BACKING_OFF = 12
|
|
} dhcp_state_enum_t;
|
|
|
|
/* DHCP op codes */
|
|
#define DHCP_BOOTREQUEST 1
|
|
#define DHCP_BOOTREPLY 2
|
|
|
|
/* DHCP message types */
|
|
#define DHCP_DISCOVER 1
|
|
#define DHCP_OFFER 2
|
|
#define DHCP_REQUEST 3
|
|
#define DHCP_DECLINE 4
|
|
#define DHCP_ACK 5
|
|
#define DHCP_NAK 6
|
|
#define DHCP_RELEASE 7
|
|
#define DHCP_INFORM 8
|
|
|
|
#define DHCP_MAGIC_COOKIE 0x63825363UL
|
|
|
|
/* This is a list of options for BOOTP and DHCP, see RFC 2132 for descriptions */
|
|
|
|
/* BootP options */
|
|
#define DHCP_OPTION_PAD 0
|
|
#define DHCP_OPTION_SUBNET_MASK 1 /* RFC 2132 3.3 */
|
|
#define DHCP_OPTION_ROUTER 3
|
|
#define DHCP_OPTION_DNS_SERVER 6
|
|
#define DHCP_OPTION_HOSTNAME 12
|
|
#define DHCP_OPTION_IP_TTL 23
|
|
#define DHCP_OPTION_MTU 26
|
|
#define DHCP_OPTION_BROADCAST 28
|
|
#define DHCP_OPTION_TCP_TTL 37
|
|
#define DHCP_OPTION_NTP 42
|
|
#define DHCP_OPTION_END 255
|
|
|
|
/* DHCP options */
|
|
#define DHCP_OPTION_REQUESTED_IP 50 /* RFC 2132 9.1, requested IP address */
|
|
#define DHCP_OPTION_LEASE_TIME 51 /* RFC 2132 9.2, time in seconds, in 4 bytes */
|
|
#define DHCP_OPTION_OVERLOAD 52 /* RFC2132 9.3, use file and/or sname field for options */
|
|
|
|
#define DHCP_OPTION_MESSAGE_TYPE 53 /* RFC 2132 9.6, important for DHCP */
|
|
#define DHCP_OPTION_MESSAGE_TYPE_LEN 1
|
|
|
|
#define DHCP_OPTION_SERVER_ID 54 /* RFC 2132 9.7, server IP address */
|
|
#define DHCP_OPTION_PARAMETER_REQUEST_LIST 55 /* RFC 2132 9.8, requested option types */
|
|
|
|
#define DHCP_OPTION_MAX_MSG_SIZE 57 /* RFC 2132 9.10, message size accepted >= 576 */
|
|
#define DHCP_OPTION_MAX_MSG_SIZE_LEN 2
|
|
|
|
#define DHCP_OPTION_T1 58 /* T1 renewal time */
|
|
#define DHCP_OPTION_T2 59 /* T2 rebinding time */
|
|
#define DHCP_OPTION_US 60
|
|
#define DHCP_OPTION_CLIENT_ID 61
|
|
#define DHCP_OPTION_TFTP_SERVERNAME 66
|
|
#define DHCP_OPTION_BOOTFILE 67
|
|
|
|
/* possible combinations of overloading the file and sname fields with options */
|
|
#define DHCP_OVERLOAD_NONE 0
|
|
#define DHCP_OVERLOAD_FILE 1
|
|
#define DHCP_OVERLOAD_SNAME 2
|
|
#define DHCP_OVERLOAD_SNAME_FILE 3
|
|
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* LWIP_HDR_PROT_DHCP_H */
|