mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-11-14 15:54:15 +08:00
768cf84138
IEEE 802.1q specification provides recommendation and examples which can be used as good default values for different drivers. This patch implements mapping examples documented in IEEE 802.1Q-2022 in Annex I "I.3 Traffic type to traffic class mapping" and IETF DSCP naming and mapping DSCP to Traffic Type inspired by RFC8325. This helpers will be used in followup patches for dsa/microchip DCB implementation. Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: David S. Miller <davem@davemloft.net>
58 lines
1.4 KiB
C
58 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/* Copyright (c) 2024 Pengutronix, Oleksij Rempel <kernel@pengutronix.de> */
|
|
|
|
#ifndef _NET_IEEE8021Q_H
|
|
#define _NET_IEEE8021Q_H
|
|
|
|
#include <linux/errno.h>
|
|
|
|
/**
|
|
* enum ieee8021q_traffic_type - 802.1Q traffic type priority values (802.1Q-2022)
|
|
*
|
|
* @IEEE8021Q_TT_BK: Background
|
|
* @IEEE8021Q_TT_BE: Best Effort (default). According to 802.1Q-2022, BE is 0
|
|
* but has higher priority than BK which is 1.
|
|
* @IEEE8021Q_TT_EE: Excellent Effort
|
|
* @IEEE8021Q_TT_CA: Critical Applications
|
|
* @IEEE8021Q_TT_VI: Video, < 100 ms latency and jitter
|
|
* @IEEE8021Q_TT_VO: Voice, < 10 ms latency and jitter
|
|
* @IEEE8021Q_TT_IC: Internetwork Control
|
|
* @IEEE8021Q_TT_NC: Network Control
|
|
*/
|
|
enum ieee8021q_traffic_type {
|
|
IEEE8021Q_TT_BK = 0,
|
|
IEEE8021Q_TT_BE = 1,
|
|
IEEE8021Q_TT_EE = 2,
|
|
IEEE8021Q_TT_CA = 3,
|
|
IEEE8021Q_TT_VI = 4,
|
|
IEEE8021Q_TT_VO = 5,
|
|
IEEE8021Q_TT_IC = 6,
|
|
IEEE8021Q_TT_NC = 7,
|
|
|
|
/* private: */
|
|
IEEE8021Q_TT_MAX,
|
|
};
|
|
|
|
#define SIMPLE_IETF_DSCP_TO_IEEE8021Q_TT(dscp) ((dscp >> 3) & 0x7)
|
|
|
|
#if IS_ENABLED(CONFIG_NET_IEEE8021Q_HELPERS)
|
|
|
|
int ietf_dscp_to_ieee8021q_tt(u8 dscp);
|
|
int ieee8021q_tt_to_tc(enum ieee8021q_traffic_type tt, unsigned int num_queues);
|
|
|
|
#else
|
|
|
|
static inline int ietf_dscp_to_ieee8021q_tt(u8 dscp)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
static inline int ieee8021q_tt_to_tc(enum ieee8021q_traffic_type tt,
|
|
unsigned int num_queues)
|
|
{
|
|
return -EOPNOTSUPP;
|
|
}
|
|
|
|
#endif
|
|
#endif /* _NET_IEEE8021Q_H */
|