| /** |
| * @file |
| * Ethernet protocol definitions |
| */ |
| |
| /* |
| * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
| * 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: Adam Dunkels <adam@sics.se> |
| * |
| */ |
| #ifndef LWIP_HDR_PROT_ETHERNET_H |
| #define LWIP_HDR_PROT_ETHERNET_H |
| |
| #include "lwip/arch.h" |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| #ifndef ETH_HWADDR_LEN |
| #ifdef ETHARP_HWADDR_LEN |
| #define ETH_HWADDR_LEN ETHARP_HWADDR_LEN /* compatibility mode */ |
| #else |
| #define ETH_HWADDR_LEN 6 |
| #endif |
| #endif |
| |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/bpstruct.h" |
| #endif |
| PACK_STRUCT_BEGIN |
| struct eth_addr { |
| PACK_STRUCT_FLD_8(u8_t addr[ETH_HWADDR_LEN]); |
| } PACK_STRUCT_STRUCT; |
| PACK_STRUCT_END |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/epstruct.h" |
| #endif |
| |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/bpstruct.h" |
| #endif |
| PACK_STRUCT_BEGIN |
| /** Ethernet header */ |
| struct eth_hdr { |
| #if ETH_PAD_SIZE |
| PACK_STRUCT_FLD_8(u8_t padding[ETH_PAD_SIZE]); |
| #endif |
| PACK_STRUCT_FLD_S(struct eth_addr dest); |
| PACK_STRUCT_FLD_S(struct eth_addr src); |
| PACK_STRUCT_FIELD(u16_t type); |
| } PACK_STRUCT_STRUCT; |
| PACK_STRUCT_END |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/epstruct.h" |
| #endif |
| |
| #define SIZEOF_ETH_HDR (14 + ETH_PAD_SIZE) |
| |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/bpstruct.h" |
| #endif |
| PACK_STRUCT_BEGIN |
| /** VLAN header inserted between ethernet header and payload |
| * if 'type' in ethernet header is ETHTYPE_VLAN. |
| * See IEEE802.Q */ |
| struct eth_vlan_hdr { |
| PACK_STRUCT_FIELD(u16_t prio_vid); |
| PACK_STRUCT_FIELD(u16_t tpid); |
| } PACK_STRUCT_STRUCT; |
| PACK_STRUCT_END |
| #ifdef PACK_STRUCT_USE_INCLUDES |
| # include "arch/epstruct.h" |
| #endif |
| |
| #define SIZEOF_VLAN_HDR 4 |
| #define VLAN_ID(vlan_hdr) (lwip_htons((vlan_hdr)->prio_vid) & 0xFFF) |
| |
| /** |
| * @ingroup ethernet |
| * A list of often ethtypes (although lwIP does not use all of them): */ |
| enum eth_type { |
| /** Internet protocol v4 */ |
| ETHTYPE_IP = 0x0800U, |
| /** Address resolution protocol */ |
| ETHTYPE_ARP = 0x0806U, |
| /** Wake on lan */ |
| ETHTYPE_WOL = 0x0842U, |
| /** RARP */ |
| ETHTYPE_RARP = 0x8035U, |
| /** Virtual local area network */ |
| ETHTYPE_VLAN = 0x8100U, |
| /** Internet protocol v6 */ |
| ETHTYPE_IPV6 = 0x86DDU, |
| /** PPP Over Ethernet Discovery Stage */ |
| ETHTYPE_PPPOEDISC = 0x8863U, |
| /** PPP Over Ethernet Session Stage */ |
| ETHTYPE_PPPOE = 0x8864U, |
| /** Jumbo Frames */ |
| ETHTYPE_JUMBO = 0x8870U, |
| /** Process field network */ |
| ETHTYPE_PROFINET = 0x8892U, |
| /** Ethernet for control automation technology */ |
| ETHTYPE_ETHERCAT = 0x88A4U, |
| /** Link layer discovery protocol */ |
| ETHTYPE_LLDP = 0x88CCU, |
| /** Serial real-time communication system */ |
| ETHTYPE_SERCOS = 0x88CDU, |
| /** Media redundancy protocol */ |
| ETHTYPE_MRP = 0x88E3U, |
| /** Precision time protocol */ |
| ETHTYPE_PTP = 0x88F7U, |
| /** Q-in-Q, 802.1ad */ |
| ETHTYPE_QINQ = 0x9100U |
| }; |
| |
| /** The 24-bit IANA IPv4-multicast OUI is 01-00-5e: */ |
| #define LL_IP4_MULTICAST_ADDR_0 0x01 |
| #define LL_IP4_MULTICAST_ADDR_1 0x00 |
| #define LL_IP4_MULTICAST_ADDR_2 0x5e |
| |
| /** IPv6 multicast uses this prefix */ |
| #define LL_IP6_MULTICAST_ADDR_0 0x33 |
| #define LL_IP6_MULTICAST_ADDR_1 0x33 |
| |
| /** MEMCPY-like macro to copy to/from struct eth_addr's that are local variables |
| * or known to be 32-bit aligned within the protocol header. */ |
| #ifndef ETHADDR32_COPY |
| #define ETHADDR32_COPY(dst, src) SMEMCPY(dst, src, ETH_HWADDR_LEN) |
| #endif |
| |
| /** MEMCPY-like macro to copy to/from struct eth_addr's that are no local |
| * variables and known to be 16-bit aligned within the protocol header. */ |
| #ifndef ETHADDR16_COPY |
| #define ETHADDR16_COPY(dst, src) SMEMCPY(dst, src, ETH_HWADDR_LEN) |
| #endif |
| |
| #define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, ETH_HWADDR_LEN) == 0) |
| |
| #ifdef __cplusplus |
| } |
| #endif |
| |
| #endif /* LWIP_HDR_PROT_ETHERNET_H */ |