eth.h

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00001 /*
00002  * Copyright (c) 2009 Lukas Mejdrech
00003  * All rights reserved.
00004  *
00005  * Redistribution and use in source and binary forms, with or without
00006  * modification, are permitted provided that the following conditions
00007  * are met:
00008  *
00009  * - Redistributions of source code must retain the above copyright
00010  *   notice, this list of conditions and the following disclaimer.
00011  * - Redistributions in binary form must reproduce the above copyright
00012  *   notice, this list of conditions and the following disclaimer in the
00013  *   documentation and/or other materials provided with the distribution.
00014  * - The name of the author may not be used to endorse or promote products
00015  *   derived from this software without specific prior written permission.
00016  *
00017  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
00018  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
00019  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
00020  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
00021  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
00022  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
00023  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
00024  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00025  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
00026  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00027  */
00028 
00037 #ifndef NET_ETH_H_
00038 #define NET_ETH_H_
00039 
00040 #include <fibril_synch.h>
00041 #include <ipc/services.h>
00042 
00043 #include <net/device.h>
00044 #include <adt/measured_strings.h>
00045 
00047 #define ETH_ADDR  6
00048 
00050 #define ETH_PREAMBLE  0x55
00051 
00053 #define ETH_SFD  0xD5
00054 
00056 #define IEEE_8023_2_UI  0x03
00057 
00061 typedef struct eth_header_snap eth_header_snap_t;
00062 
00066 typedef struct eth_header_lsap eth_header_lsap_t;
00067 
00071 typedef struct eth_ieee_lsap eth_ieee_lsap_t;
00072 
00076 typedef struct eth_snap eth_snap_t;
00077 
00081 typedef struct eth_preamble eth_preamble_t;
00082 
00086 typedef struct eth_header eth_header_t;
00087 
00089 struct eth_ieee_lsap {
00094         uint8_t dsap;
00095         
00100         uint8_t ssap;
00101         
00106         uint8_t ctrl;
00107 } __attribute__ ((packed));
00108 
00110 struct eth_snap {
00112         uint8_t protocol[3];
00113         
00118         uint16_t ethertype;
00119 } __attribute__ ((packed));
00120 
00125 struct eth_preamble {
00130         uint8_t preamble[7];
00131         
00137         uint8_t sfd;
00138 } __attribute__ ((packed));
00139 
00141 struct eth_header {
00143         uint8_t destination_address[ETH_ADDR];
00145         uint8_t source_address[ETH_ADDR];
00146         
00151         uint16_t ethertype;
00152 } __attribute__ ((packed));
00153 
00155 struct eth_header_lsap {
00157         eth_header_t header;
00158         
00167         eth_ieee_lsap_t lsap;
00168 } __attribute__ ((packed));
00169 
00171 struct eth_header_snap {
00173         eth_header_t header;
00174         
00183         eth_ieee_lsap_t lsap;
00184         
00186         eth_snap_t snap;
00187 } __attribute__ ((packed));
00188 
00190 typedef uint32_t eth_fcs_t;
00191 
00195 typedef struct eth_globals eth_globals_t;
00196 
00200 typedef struct eth_device eth_device_t;
00201 
00205 typedef struct eth_proto eth_proto_t;
00206 
00211 DEVICE_MAP_DECLARE(eth_devices, eth_device_t);
00212 
00217 INT_MAP_DECLARE(eth_protos, eth_proto_t);
00218 
00220 struct eth_device {
00222         device_id_t device_id;
00224         services_t service;
00226         int phone;
00228         size_t mtu;
00229         
00235         int flags;
00236         
00238         measured_string_t *addr;
00239         
00241         uint8_t *addr_data;
00242 };
00243 
00245 struct eth_proto {
00247         services_t service;
00249         int protocol;
00251         int phone;
00252 };
00253 
00255 struct eth_globals {
00257         int net_phone;
00259         fibril_rwlock_t devices_lock;
00261         eth_devices_t devices;
00263         fibril_rwlock_t protos_lock;
00264         
00269         eth_protos_t protos;
00270         
00272         measured_string_t *broadcast_addr;
00273 };
00274 
00275 #endif
00276 

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