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Diffstat (limited to 'lwip/src/include/lwip/prot/ethernet.h')
| -rw-r--r-- | lwip/src/include/lwip/prot/ethernet.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/lwip/src/include/lwip/prot/ethernet.h b/lwip/src/include/lwip/prot/ethernet.h new file mode 100644 index 0000000..309e574 --- /dev/null +++ b/lwip/src/include/lwip/prot/ethernet.h @@ -0,0 +1,125 @@ +/** + * @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" +#include "lwip/prot/ieee.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 +/** An Ethernet MAC address */ +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 + +/** Initialize a struct eth_addr with its 6 bytes (takes care of correct braces) */ +#define ETH_ADDR(b0, b1, b2, b3, b4, b5) {{b0, b1, b2, b3, b4, b5}} + +#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) + +/** 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 + +#define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, ETH_HWADDR_LEN) == 0) + +#ifdef __cplusplus +} +#endif + +#endif /* LWIP_HDR_PROT_ETHERNET_H */ |