117 lines
2.1 KiB
C
117 lines
2.1 KiB
C
/** @file
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* @brief VLAN specific definitions.
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*
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* Virtual LAN specific definitions.
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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 ZEPHYR_INCLUDE_NET_ETHERNET_VLAN_H_
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#define ZEPHYR_INCLUDE_NET_ETHERNET_VLAN_H_
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/**
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* @brief VLAN definitions and helpers
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* @defgroup vlan_api Virtual LAN definitions and helpers
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* @ingroup networking
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* @{
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*/
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#include <zephyr/types.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/** Unspecified VLAN tag value */
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#define NET_VLAN_TAG_UNSPEC 0x0fff
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/**
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* @brief Get VLAN identifier from TCI.
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*
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* @param tci VLAN tag control information.
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*
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* @return VLAN identifier.
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*/
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static inline u16_t net_eth_vlan_get_vid(u16_t tci)
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{
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return tci & 0x0fff;
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}
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/**
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* @brief Get Drop Eligible Indicator from TCI.
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*
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* @param tci VLAN tag control information.
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*
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* @return Drop eligible indicator.
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*/
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static inline u8_t net_eth_vlan_get_dei(u16_t tci)
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{
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return (tci >> 12) & 0x01;
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}
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/**
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* @brief Get Priority Code Point from TCI.
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*
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* @param tci VLAN tag control information.
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*
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* @return Priority code point.
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*/
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static inline u8_t net_eth_vlan_get_pcp(u16_t tci)
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{
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return (tci >> 13) & 0x07;
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}
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/**
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* @brief Set VLAN identifier to TCI.
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*
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* @param tci VLAN tag control information.
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* @param vid VLAN identifier.
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*
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* @return New TCI value.
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*/
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static inline u16_t net_eth_vlan_set_vid(u16_t tci, u16_t vid)
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{
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return (tci & 0xf000) | (vid & 0x0fff);
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}
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/**
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* @brief Set Drop Eligible Indicator to TCI.
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*
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* @param tci VLAN tag control information.
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* @param dei Drop eligible indicator.
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*
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* @return New TCI value.
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*/
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static inline u16_t net_eth_vlan_set_dei(u16_t tci, bool dei)
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{
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return (tci & 0xefff) | ((!!dei) << 12);
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}
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/**
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* @brief Set Priority Code Point to TCI.
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*
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* @param tci VLAN tag control information.
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* @param pcp Priority code point.
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*
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* @return New TCI value.
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*/
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static inline u16_t net_eth_vlan_set_pcp(u16_t tci, u8_t pcp)
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{
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return (tci & 0x1fff) | ((pcp & 0x07) << 13);
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}
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#ifdef __cplusplus
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}
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#endif
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/**
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* @}
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*/
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#endif /* ZEPHYR_INCLUDE_NET_ETHERNET_VLAN_H_ */
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