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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright (c) 2016-2018 Linaro Limited
*/
/**
* @file
*
* ODP ethernet header
*/
#ifndef ODP_ETH_H_
#define ODP_ETH_H_
#ifdef __cplusplus
extern "C" {
#endif
#include <odp/api/align.h>
#include <odp/api/byteorder.h>
#include <odp/api/debug.h>
#include <stdint.h>
/** @addtogroup odp_header ODP HEADER
* @{
*/
#define _ODP_ETHADDR_LEN 6 /**< Ethernet address length */
#define _ODP_ETHHDR_LEN 14 /**< Ethernet header length */
#define _ODP_VLANHDR_LEN 4 /**< VLAN header length */
#define _ODP_ETH_LEN_MIN 60 /**< Min frame length (excl CRC 4 bytes) */
#define _ODP_ETH_LEN_MIN_CRC 64 /**< Min frame length (incl CRC 4 bytes) */
#define _ODP_ETH_LEN_MAX 1514 /**< Max frame length (excl CRC 4 bytes) */
#define _ODP_ETH_LEN_MAX_CRC 1518 /**< Max frame length (incl CRC 4 bytes) */
/* The two byte _odp_vlanhdr_t tci field is composed of the following three
* subfields - a three bit Priority Code Point (PCP), a one bit Drop
* Eligibility Indicator (DEI) and a twelve bit VLAN Identifier (VID). The
* following constants can be used to extract or modify these subfields, once
* the tci field has been read in and converted to host byte order. Note
* that the DEI subfield used to be the CFI bit.
*/
#define _ODP_VLANHDR_MAX_PRIO 7 /**< Max value of the 3 bit priority */
#define _ODP_VLANHDR_PCP_MASK 0xE000 /**< PCP field bit mask */
#define _ODP_VLANHDR_PCP_SHIFT 13 /**< PCP field shift */
#define _ODP_VLANHDR_DEI_MASK 0x1000 /**< DEI field bit mask */
#define _ODP_VLANHDR_DEI_SHIFT 12 /**< DEI field shift */
#define _ODP_VLANHDR_MAX_VID 0x0FFF /**< Max value of the 12 bit VID field */
#define _ODP_VLANHDR_VID_MASK 0x0FFF /**< VID field bit mask */
#define _ODP_VLANHDR_VID_SHIFT 0 /**< VID field shift */
/**
* Ethernet MAC address
*/
typedef struct ODP_PACKED {
uint8_t addr[_ODP_ETHADDR_LEN]; /**< @private Address */
} _odp_ethaddr_t;
/** @internal Compile time assert */
ODP_STATIC_ASSERT(sizeof(_odp_ethaddr_t) == _ODP_ETHADDR_LEN,
"_ODP_ETHADDR_T__SIZE_ERROR");
/**
* Ethernet header
*/
typedef struct ODP_PACKED {
_odp_ethaddr_t dst; /**< Destination address */
_odp_ethaddr_t src; /**< Source address */
odp_u16be_t type; /**< EtherType */
} _odp_ethhdr_t;
/** @internal Compile time assert */
ODP_STATIC_ASSERT(sizeof(_odp_ethhdr_t) == _ODP_ETHHDR_LEN,
"_ODP_ETHHDR_T__SIZE_ERROR");
/**
* IEEE 802.1Q VLAN header
*
* This field is present when the EtherType (the _odp_ethhdr_t type field) of
* the preceding ethernet header is _ODP_ETHTYPE_VLAN. The inner EtherType
* (the _odp_vlanhdr_t type field) then indicates what comes next. Note that
* the so called TPID field isn't here because it overlaps with the
* _odp_ethhdr_t type field.
*/
typedef struct ODP_PACKED {
odp_u16be_t tci; /**< Priority / CFI / VLAN ID */
odp_u16be_t type; /**< Inner EtherType */
} _odp_vlanhdr_t;
/** @internal Compile time assert */
ODP_STATIC_ASSERT(sizeof(_odp_vlanhdr_t) == _ODP_VLANHDR_LEN,
"_ODP_VLANHDR_T__SIZE_ERROR");
/* Ethernet header Ether Type ('type') values, a selected few */
#define _ODP_ETHTYPE_IPV4 0x0800 /**< Internet Protocol version 4 */
#define _ODP_ETHTYPE_ARP 0x0806 /**< Address Resolution Protocol */
#define _ODP_ETHTYPE_RARP 0x8035 /**< Reverse Address Resolution Protocol*/
#define _ODP_ETHTYPE_VLAN 0x8100 /**< VLAN-tagged frame IEEE 802.1Q */
#define _ODP_ETHTYPE_VLAN_OUTER 0x88A8 /**< Stacked VLANs/QinQ, outer-tag/S-TAG*/
#define _ODP_ETHTYPE_IPV6 0x86dd /**< Internet Protocol version 6 */
#define _ODP_ETHTYPE_FLOW_CTRL 0x8808 /**< Ethernet flow control */
#define _ODP_ETHTYPE_MPLS 0x8847 /**< MPLS unicast */
#define _ODP_ETHTYPE_MPLS_MCAST 0x8848 /**< MPLS multicast */
#define _ODP_ETHTYPE_MACSEC 0x88E5 /**< MAC security IEEE 802.1AE */
#define _ODP_ETHTYPE_1588 0x88F7 /**< Precision Time Protocol IEEE 1588 */
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#endif
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