139 lines
4.9 KiB
C
139 lines
4.9 KiB
C
/** @file
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* @brief Various priority to traffic class mappings
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*
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* This is not to be included by the application.
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*/
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/*
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* Copyright (c) 2018 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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#ifndef __TC_MAPPING_H
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#define __TC_MAPPING_H
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#include <zephyr/types.h>
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/* All the maps below use priorities and indexes, below is the list of them
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* according to 802.1Q - table I-2.
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*
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* Priority Acronym Traffic types
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* 1 (lowest) BK Background
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* 0 (default) BE Best effort
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* 2 EE Excellent effort
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* 3 CA Critical applications
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* 4 VI Video, < 100 ms latency and jitter
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* 5 VO Voice, < 10 ms latency and jitter
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* 6 IC Internetwork control
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* 7 (highest) NC Network control
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*/
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/* Helper macros used to generate the map to use */
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#define PRIORITY2TC_GEN_INNER(TYPE, COUNT) priority2tc_ ## TYPE ## _ ## COUNT
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#define PRIORITY2TC_GEN(TYPE, COUNT) PRIORITY2TC_GEN_INNER(TYPE, COUNT)
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#if defined(CONFIG_NET_TC_MAPPING_STRICT)
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/* This is the recommended priority to traffic class mapping for
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* implementations that do not support the credit-based shaper transmission
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* selection algorithm.
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* Ref: 802.1Q - chapter 8.6.6 - table 8-4
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*/
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#if NET_TC_TX_COUNT == 1 || NET_TC_RX_COUNT == 1
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static const u8_t priority2tc_strict_1[] = {0, 0, 0, 0, 0, 0, 0, 0};
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#endif
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#if NET_TC_TX_COUNT == 2 || NET_TC_RX_COUNT == 2
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static const u8_t priority2tc_strict_2[] = {0, 0, 0, 0, 1, 1, 1, 1};
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#endif
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#if NET_TC_TX_COUNT == 3 || NET_TC_RX_COUNT == 3
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static const u8_t priority2tc_strict_3[] = {0, 0, 0, 0, 1, 1, 2, 2};
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#endif
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#if NET_TC_TX_COUNT == 4 || NET_TC_RX_COUNT == 4
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static const u8_t priority2tc_strict_4[] = {0, 0, 1, 1, 2, 2, 3, 3};
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#endif
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#if NET_TC_TX_COUNT == 5 || NET_TC_RX_COUNT == 5
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static const u8_t priority2tc_strict_5[] = {0, 0, 1, 1, 2, 2, 3, 4};
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#endif
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#if NET_TC_TX_COUNT == 6 || NET_TC_RX_COUNT == 6
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static const u8_t priority2tc_strict_6[] = {1, 0, 2, 2, 3, 3, 4, 5};
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#endif
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#if NET_TC_TX_COUNT == 7 || NET_TC_RX_COUNT == 7
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static const u8_t priority2tc_strict_7[] = {1, 0, 2, 3, 4, 4, 5, 6};
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#endif
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#if NET_TC_TX_COUNT == 8 || NET_TC_RX_COUNT == 8
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static const u8_t priority2tc_strict_8[] = {1, 0, 2, 3, 4, 5, 6, 7};
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#endif
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static const u8_t *tx_prio2tc_map = PRIORITY2TC_GEN(strict, NET_TC_TX_COUNT);
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static const u8_t *rx_prio2tc_map = PRIORITY2TC_GEN(strict, NET_TC_RX_COUNT);
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#elif defined(CONFIG_NET_TC_MAPPING_SR_CLASS_A_AND_B)
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/* This is the recommended priority to traffic class mapping for a system that
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* supports SR (Stream Reservation) class A and SR class B.
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* Ref: 802.1Q - chapter 34.5 - table 34-1
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*/
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#if NET_TC_TX_COUNT == 2 || NET_TC_RX_COUNT == 2
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static const u8_t priority2tc_sr_ab_2[] = {0, 0, 1, 1, 0, 0, 0, 0};
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#endif
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#if NET_TC_TX_COUNT == 3 || NET_TC_RX_COUNT == 3
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static const u8_t priority2tc_sr_ab_3[] = {0, 0, 1, 2, 0, 0, 0, 0};
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#endif
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#if NET_TC_TX_COUNT == 4 || NET_TC_RX_COUNT == 4
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static const u8_t priority2tc_sr_ab_4[] = {0, 0, 2, 3, 1, 1, 1, 1};
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#endif
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#if NET_TC_TX_COUNT == 5 || NET_TC_RX_COUNT == 5
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static const u8_t priority2tc_sr_ab_5[] = {0, 0, 3, 4, 1, 1, 2, 2};
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#endif
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#if NET_TC_TX_COUNT == 6 || NET_TC_RX_COUNT == 6
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static const u8_t priority2tc_sr_ab_6[] = {0, 0, 4, 5, 1, 1, 2, 3};
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#endif
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#if NET_TC_TX_COUNT == 7 || NET_TC_RX_COUNT == 7
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static const u8_t priority2tc_sr_ab_7[] = {0, 0, 5, 6, 1, 2, 3, 4};
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#endif
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#if NET_TC_TX_COUNT == 8 || NET_TC_RX_COUNT == 8
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static const u8_t priority2tc_sr_ab_8[] = {1, 0, 6, 7, 2, 3, 4, 5};
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#endif
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static const u8_t *tx_prio2tc_map = PRIORITY2TC_GEN(sr_ab, NET_TC_TX_COUNT);
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static const u8_t *rx_prio2tc_map = PRIORITY2TC_GEN(sr_ab, NET_TC_RX_COUNT);
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#elif defined(CONFIG_NET_TC_MAPPING_SR_CLASS_B_ONLY)
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/* This is the recommended priority to traffic class mapping for a system that
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* supports SR (Stream Reservation) class B only.
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* Ref: 802.1Q - chapter 34.5 - table 34-2
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*/
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#if NET_TC_TX_COUNT == 2 || NET_TC_RX_COUNT == 2
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static const u8_t priority2tc_sr_b_2[] = {0, 0, 1, 0, 0, 0, 0, 0};
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#endif
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#if NET_TC_TX_COUNT == 3 || NET_TC_RX_COUNT == 3
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static const u8_t priority2tc_sr_b_3[] = {0, 0, 2, 0, 1, 1, 1, 1};
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#endif
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#if NET_TC_TX_COUNT == 4 || NET_TC_RX_COUNT == 4
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static const u8_t priority2tc_sr_b_4[] = {0, 0, 3, 0, 1, 1, 2, 2};
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#endif
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#if NET_TC_TX_COUNT == 5 || NET_TC_RX_COUNT == 5
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static const u8_t priority2tc_sr_b_5[] = {0, 0, 4, 1, 2, 2, 3, 3};
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#endif
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#if NET_TC_TX_COUNT == 6 || NET_TC_RX_COUNT == 6
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static const u8_t priority2tc_sr_b_6[] = {0, 0, 5, 1, 2, 2, 3, 4};
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#endif
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#if NET_TC_TX_COUNT == 7 || NET_TC_RX_COUNT == 7
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static const u8_t priority2tc_sr_b_7[] = {1, 0, 6, 2, 3, 3, 4, 5};
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#endif
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#if NET_TC_TX_COUNT == 8 || NET_TC_RX_COUNT == 8
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static const u8_t priority2tc_sr_b_8[] = {1, 0, 7, 2, 3, 4, 5, 6};
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#endif
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static const u8_t *tx_prio2tc_map = PRIORITY2TC_GEN(sr_b, NET_TC_TX_COUNT);
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static const u8_t *rx_prio2tc_map = PRIORITY2TC_GEN(sr_b, NET_TC_RX_COUNT);
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#endif
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#endif /* __TC_MAPPING_H */
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