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