/* * SPDX-FileCopyrightText: 2021 Espressif Systems (Shanghai) CO LTD * * SPDX-License-Identifier: Apache-2.0 *//* ... */ #pragma once #define ETH_ADDR_LEN (6) /* MAC Address length */ #define ETH_HEADER_LEN (14) /* Ethernet frame header size: Dest addr(6 Bytes) + Src addr(6 Bytes) + length/type(2 Bytes) */ #define ETH_VLAN_TAG_LEN (4) /* Optional 802.1q VLAN Tag length */ #define ETH_CRC_LEN (4) /* Ethernet frame CRC length */ #define ETH_MAX_PAYLOAD_LEN (1500) /* Maximum Ethernet payload size */ #define ETH_MIN_PAYLOAD_LEN (46) /* Minimum Ethernet payload size */ #define ETH_JUMBO_FRAME_PAYLOAD_LEN (9000) /* Jumbo frame payload size */ #define ETH_MAX_PACKET_SIZE (ETH_HEADER_LEN + ETH_VLAN_TAG_LEN + ETH_MAX_PAYLOAD_LEN + ETH_CRC_LEN) /* Maximum frame size (1522 Bytes) */ #define ETH_MIN_PACKET_SIZE (ETH_HEADER_LEN + ETH_MIN_PAYLOAD_LEN + ETH_CRC_LEN) /* Minimum frame size (64 Bytes) */ #define ETH_IEEE802_3_MAX_LEN 0x05DC /* Maximum length of IEEE802.3 frame stored in Length/Ethtype field */ /* EtherTypes */ #define ETH_T_8021Q 0x8100 /* 802.1Q VLAN tag */ #define ETH_T_8021AD 0x88A8 /* 802.1ad Service VLAN (double vlan tag) */