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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
115 lines
3.8 KiB
C
115 lines
3.8 KiB
C
/**
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* @file
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* ARP protocol definitions
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*/
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/*
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* Copyright (c) 2001-2004 Swedish Institute of Computer Science.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* This file is part of the lwIP TCP/IP stack.
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*
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* Author: Adam Dunkels <adam@sics.se>
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*
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*/
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#ifndef LWIP_HDR_PROT_ETHARP_H
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#define LWIP_HDR_PROT_ETHARP_H
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#include "lwip/arch.h"
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#include "lwip/prot/ethernet.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef ETHARP_HWADDR_LEN
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#define ETHARP_HWADDR_LEN ETH_HWADDR_LEN
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#endif
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/**
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* struct ip4_addr_wordaligned is used in the definition of the ARP packet format in
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* order to support compilers that don't have structure packing.
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*/
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#ifdef PACK_STRUCT_USE_INCLUDES
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# include "arch/bpstruct.h"
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#endif
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PACK_STRUCT_BEGIN
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struct ip4_addr_wordaligned {
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PACK_STRUCT_FIELD(u16_t addrw[2]);
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} PACK_STRUCT_STRUCT;
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PACK_STRUCT_END
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#ifdef PACK_STRUCT_USE_INCLUDES
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# include "arch/epstruct.h"
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#endif
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/** MEMCPY-like copying of IP addresses where addresses are known to be
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* 16-bit-aligned if the port is correctly configured (so a port could define
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* this to copying 2 u16_t's) - no NULL-pointer-checking needed. */
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#ifndef IPADDR_WORDALIGNED_COPY_TO_IP4_ADDR_T
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#define IPADDR_WORDALIGNED_COPY_TO_IP4_ADDR_T(dest, src) SMEMCPY(dest, src, sizeof(ip4_addr_t))
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#endif
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/** MEMCPY-like copying of IP addresses where addresses are known to be
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* 16-bit-aligned if the port is correctly configured (so a port could define
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* this to copying 2 u16_t's) - no NULL-pointer-checking needed. */
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#ifndef IPADDR_WORDALIGNED_COPY_FROM_IP4_ADDR_T
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#define IPADDR_WORDALIGNED_COPY_FROM_IP4_ADDR_T(dest, src) SMEMCPY(dest, src, sizeof(ip4_addr_t))
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#endif
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#ifdef PACK_STRUCT_USE_INCLUDES
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# include "arch/bpstruct.h"
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#endif
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PACK_STRUCT_BEGIN
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/** the ARP message, see RFC 826 ("Packet format") */
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struct etharp_hdr {
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PACK_STRUCT_FIELD(u16_t hwtype);
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PACK_STRUCT_FIELD(u16_t proto);
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PACK_STRUCT_FLD_8(u8_t hwlen);
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PACK_STRUCT_FLD_8(u8_t protolen);
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PACK_STRUCT_FIELD(u16_t opcode);
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PACK_STRUCT_FLD_S(struct eth_addr shwaddr);
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PACK_STRUCT_FLD_S(struct ip4_addr_wordaligned sipaddr);
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PACK_STRUCT_FLD_S(struct eth_addr dhwaddr);
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PACK_STRUCT_FLD_S(struct ip4_addr_wordaligned dipaddr);
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} PACK_STRUCT_STRUCT;
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PACK_STRUCT_END
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#ifdef PACK_STRUCT_USE_INCLUDES
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# include "arch/epstruct.h"
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#endif
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#define SIZEOF_ETHARP_HDR 28
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/* ARP message types (opcodes) */
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enum etharp_opcode {
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ARP_REQUEST = 1,
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ARP_REPLY = 2
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};
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#ifdef __cplusplus
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}
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#endif
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#endif /* LWIP_HDR_PROT_ETHARP_H */
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