136 lines
3.8 KiB
C
136 lines
3.8 KiB
C
/*
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* $Id$
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*
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Copyright (c) 2015-2016 Chung, Hyung-Hwan. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions
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are met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE AUTHOR "AS IS" AND ANY EXPRESS OR
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IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAfRRANTIES
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OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _STIO_ARP_H_
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#define _STIO_ARP_H_
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#include <stio.h>
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#include <stio-sck.h>
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#define STIO_ETHHDR_PROTO_IP4 0x0800
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#define STIO_ETHHDR_PROTO_ARP 0x0806
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#define STIO_ARPHDR_OPCODE_REQUEST 1
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#define STIO_ARPHDR_OPCODE_REPLY 2
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#define STIO_ARPHDR_HTYPE_ETH 0x0001
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#define STIO_ARPHDR_PTYPE_IP4 0x0800
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#define STIO_ETHADR_LEN 6
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#define STIO_IP4ADR_LEN 4
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#pragma pack(push)
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#pragma pack(1)
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struct stio_ethhdr_t
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{
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stio_uint8_t dest[STIO_ETHADR_LEN];
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stio_uint8_t source[STIO_ETHADR_LEN];
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stio_uint16_t proto;
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};
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typedef struct stio_ethhdr_t stio_ethhdr_t;
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struct stio_arphdr_t
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{
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stio_uint16_t htype; /* hardware type (ethernet: 0x0001) */
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stio_uint16_t ptype; /* protocol type (ipv4: 0x0800) */
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stio_uint8_t hlen; /* hardware address length (ethernet: 6) */
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stio_uint8_t plen; /* protocol address length (ipv4 :4) */
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stio_uint16_t opcode; /* operation code */
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};
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typedef struct stio_arphdr_t stio_arphdr_t;
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/* arp payload for ipv4 over ethernet */
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struct stio_etharp_t
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{
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stio_uint8_t sha[STIO_ETHADR_LEN]; /* source hardware address */
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stio_uint8_t spa[STIO_IP4ADR_LEN]; /* source protocol address */
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stio_uint8_t tha[STIO_ETHADR_LEN]; /* target hardware address */
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stio_uint8_t tpa[STIO_IP4ADR_LEN]; /* target protocol address */
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};
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typedef struct stio_etharp_t stio_etharp_t;
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struct stio_etharp_pkt_t
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{
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stio_ethhdr_t ethhdr;
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stio_arphdr_t arphdr;
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stio_etharp_t arppld;
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};
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typedef struct stio_etharp_pkt_t stio_etharp_pkt_t;
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#pragma pack(pop)
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#if 0
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typedef int (*stio_dev_arp_on_read_t) (stio_dev_arp_t* dev, stio_pkt_arp_t* pkt, stio_len_t len);
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typedef int (*stio_dev_arp_on_write_t) (stio_dev_arp_t* dev, void* wrctx);
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typedef struct stio_dev_arp_make_t stio_dev_arp_make_t;
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struct stio_dev_arp_make_t
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{
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stio_dev_arp_on_write_t on_write;
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stio_dev_arp_on_read_t on_read;
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};
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struct stio_dev_arp_t
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{
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STIO_DEV_HEADERS;
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stio_sckhnd_t sck;
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stio_dev_arp_on_write_t on_write;
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stio_dev_arp_on_read_t on_read;
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};
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if 0
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STIO_EXPORT stio_dev_arp_t* stio_dev_arp_make (
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stio_t* stio,
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stio_size_t xtnsize,
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const stio_dev_arp_make_t* data
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);
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STIO_EXPORT int stio_dev_arp_write (
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stio_dev_arp_t* dev,
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const stio_pkt_arp_t* arp,
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void* wrctx
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);
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STIO_EXPORT int stio_dev_arp_timedwrite (
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stio_dev_arp_t* dev,
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const stio_pkt_arp_t* arp,
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const stio_ntime_t* tmout,
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void* wrctx
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);
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#endif
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