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1/* SPDX-License-Identifier: GPL-2.0 */2/* Copyright (c) 2019, Intel Corporation. */3 4#ifndef _ICE_DCB_LIB_H_5#define _ICE_DCB_LIB_H_6 7#include "ice.h"8#include "ice_base.h"9#include "ice_lib.h"10 11#ifdef CONFIG_DCB12#define ICE_TC_MAX_BW 100 /* Default Max BW percentage */13#define ICE_DCB_HW_CHG_RST 0 /* DCB configuration changed with reset */14#define ICE_DCB_NO_HW_CHG 1 /* DCB configuration did not change */15#define ICE_DCB_HW_CHG 2 /* DCB configuration changed, no reset */16 17void ice_dcb_rebuild(struct ice_pf *pf);18int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool ets_willing, bool locked);19u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg *dcbcfg);20void ice_vsi_set_dcb_tc_cfg(struct ice_vsi *vsi);21bool ice_is_pfc_causing_hung_q(struct ice_pf *pf, unsigned int txqueue);22u8 ice_dcb_get_tc(struct ice_vsi *vsi, int queue_index);23int24ice_pf_dcb_cfg(struct ice_pf *pf, struct ice_dcbx_cfg *new_cfg, bool locked);25int ice_dcb_bwchk(struct ice_pf *pf, struct ice_dcbx_cfg *dcbcfg);26void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked);27void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi);28int ice_init_pf_dcb(struct ice_pf *pf, bool locked);29void ice_update_dcb_stats(struct ice_pf *pf);30void31ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring *tx_ring,32 struct ice_tx_buf *first);33void34ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf,35 struct ice_rq_event_info *event);36/**37 * ice_find_q_in_range38 * @low: start of queue range for a TC i.e. offset of TC39 * @high: start of queue for next TC40 * @tx_q: hung_queue/tx_queue41 *42 * finds if queue 'tx_q' falls between the two offsets of any given TC43 */44static inline bool ice_find_q_in_range(u16 low, u16 high, unsigned int tx_q)45{46 return (tx_q >= low) && (tx_q < high);47}48 49static inline void50ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc)51{52 tlan_ctx->cgd_num = dcb_tc;53}54 55static inline bool ice_is_dcb_active(struct ice_pf *pf)56{57 return (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags) ||58 test_bit(ICE_FLAG_DCB_ENA, pf->flags));59}60 61static inline u8 ice_get_pfc_mode(struct ice_pf *pf)62{63 return pf->hw.port_info->qos_cfg.local_dcbx_cfg.pfc_mode;64}65 66#else67static inline void ice_dcb_rebuild(struct ice_pf *pf) { }68 69static inline void ice_vsi_set_dcb_tc_cfg(struct ice_vsi *vsi)70{71 vsi->tc_cfg.ena_tc = ICE_DFLT_TRAFFIC_CLASS;72 vsi->tc_cfg.numtc = 1;73}74 75static inline u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)76{77 return ICE_DFLT_TRAFFIC_CLASS;78}79 80static inline u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)81{82 return 1;83}84 85static inline u886ice_dcb_get_tc(struct ice_vsi __always_unused *vsi,87 int __always_unused queue_index)88{89 return 0;90}91 92static inline int93ice_init_pf_dcb(struct ice_pf *pf, bool __always_unused locked)94{95 dev_dbg(ice_pf_to_dev(pf), "DCB not supported\n");96 return -EOPNOTSUPP;97}98 99static inline int100ice_pf_dcb_cfg(struct ice_pf __always_unused *pf,101 struct ice_dcbx_cfg __always_unused *new_cfg,102 bool __always_unused locked)103{104 return -EOPNOTSUPP;105}106 107static inline int108ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring __always_unused *tx_ring,109 struct ice_tx_buf __always_unused *first)110{111 return 0;112}113 114static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf)115{116 return false;117}118 119static inline bool120ice_is_pfc_causing_hung_q(struct ice_pf __always_unused *pf,121 unsigned int __always_unused txqueue)122{123 return false;124}125 126static inline u8 ice_get_pfc_mode(struct ice_pf *pf)127{128 return 0;129}130 131static inline void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked) { }132static inline void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi) { }133static inline void ice_update_dcb_stats(struct ice_pf *pf) { }134static inline void135ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, struct ice_rq_event_info *event) { }136static inline void ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc) { }137#endif /* CONFIG_DCB */138#endif /* _ICE_DCB_LIB_H_ */139