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/** @file
* @brief VLAN specific definitions.
*
* Virtual LAN specific definitions.
*/
/*
* Copyright (c) 2018 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef ZEPHYR_INCLUDE_NET_ETHERNET_VLAN_H_
#define ZEPHYR_INCLUDE_NET_ETHERNET_VLAN_H_
/**
* @brief VLAN definitions and helpers
* @defgroup vlan_api Virtual LAN definitions and helpers
* @ingroup networking
* @{
*/
#include <zephyr/types.h>
#ifdef __cplusplus
extern "C" {
#endif
/** Unspecified VLAN tag value */
#define NET_VLAN_TAG_UNSPEC 0x0fff
/**
* @brief Get VLAN identifier from TCI.
*
* @param tci VLAN tag control information.
*
* @return VLAN identifier.
*/
static inline u16_t net_eth_vlan_get_vid(u16_t tci)
{
return tci & 0x0fff;
}
/**
* @brief Get Drop Eligible Indicator from TCI.
*
* @param tci VLAN tag control information.
*
* @return Drop eligible indicator.
*/
static inline u8_t net_eth_vlan_get_dei(u16_t tci)
{
return (tci >> 12) & 0x01;
}
/**
* @brief Get Priority Code Point from TCI.
*
* @param tci VLAN tag control information.
*
* @return Priority code point.
*/
static inline u8_t net_eth_vlan_get_pcp(u16_t tci)
{
return (tci >> 13) & 0x07;
}
/**
* @brief Set VLAN identifier to TCI.
*
* @param tci VLAN tag control information.
* @param vid VLAN identifier.
*
* @return New TCI value.
*/
static inline u16_t net_eth_vlan_set_vid(u16_t tci, u16_t vid)
{
return (tci & 0xf000) | (vid & 0x0fff);
}
/**
* @brief Set Drop Eligible Indicator to TCI.
*
* @param tci VLAN tag control information.
* @param dei Drop eligible indicator.
*
* @return New TCI value.
*/
static inline u16_t net_eth_vlan_set_dei(u16_t tci, bool dei)
{
return (tci & 0xefff) | ((!!dei) << 12);
}
/**
* @brief Set Priority Code Point to TCI.
*
* @param tci VLAN tag control information.
* @param pcp Priority code point.
*
* @return New TCI value.
*/
static inline u16_t net_eth_vlan_set_pcp(u16_t tci, u8_t pcp)
{
return (tci & 0x1fff) | ((pcp & 0x07) << 13);
}
#ifdef __cplusplus
}
#endif
/**
* @}
*/
#endif /* ZEPHYR_INCLUDE_NET_ETHERNET_VLAN_H_ */