ice_dcb_lib.h

  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_DCB
 12#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);
 23int
 24ice_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);
 30void
 31ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring *tx_ring,
 32			      struct ice_tx_buf *first);
 33void
 34ice_setup_dcb_qos_info(struct ice_pf *pf,
 35		       struct iidc_rdma_qos_params *qos_info);
 36void
 37ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf,
 38				    struct ice_rq_event_info *event);
 39/**
 40 * ice_find_q_in_range
 41 * @low: start of queue range for a TC i.e. offset of TC
 42 * @high: start of queue for next TC
 43 * @tx_q: hung_queue/tx_queue
 44 *
 45 * finds if queue 'tx_q' falls between the two offsets of any given TC
 46 */
 47static inline bool ice_find_q_in_range(u16 low, u16 high, unsigned int tx_q)
 48{
 49	return (tx_q >= low) && (tx_q < high);
 50}
 51
 52static inline void
 53ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc)
 54{
 55	tlan_ctx->cgd_num = dcb_tc;
 56}
 57
 58static inline bool ice_is_dcb_active(struct ice_pf *pf)
 59{
 60	return (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags) ||
 61		test_bit(ICE_FLAG_DCB_ENA, pf->flags));
 62}
 63
 64static inline u8 ice_get_pfc_mode(struct ice_pf *pf)
 65{
 66	return pf->hw.port_info->qos_cfg.local_dcbx_cfg.pfc_mode;
 67}
 68
 69#else
 70static inline void ice_dcb_rebuild(struct ice_pf *pf) { }
 71
 72static inline void ice_vsi_set_dcb_tc_cfg(struct ice_vsi *vsi)
 73{
 74	vsi->tc_cfg.ena_tc = ICE_DFLT_TRAFFIC_CLASS;
 75	vsi->tc_cfg.numtc = 1;
 76}
 77
 78static inline u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
 79{
 80	return ICE_DFLT_TRAFFIC_CLASS;
 81}
 82
 83static inline u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
 84{
 85	return 1;
 86}
 87
 88static inline u8
 89ice_dcb_get_tc(struct ice_vsi __always_unused *vsi,
 90	       int __always_unused queue_index)
 91{
 92	return 0;
 93}
 94
 95static inline int
 96ice_init_pf_dcb(struct ice_pf *pf, bool __always_unused locked)
 97{
 98	dev_dbg(ice_pf_to_dev(pf), "DCB not supported\n");
 99	return -EOPNOTSUPP;
100}
101
102static inline int
103ice_pf_dcb_cfg(struct ice_pf __always_unused *pf,
104	       struct ice_dcbx_cfg __always_unused *new_cfg,
105	       bool __always_unused locked)
106{
107	return -EOPNOTSUPP;
108}
109
110static inline int
111ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring __always_unused *tx_ring,
112			      struct ice_tx_buf __always_unused *first)
113{
114	return 0;
115}
116
117static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf)
118{
119	return false;
120}
121
122static inline bool
123ice_is_pfc_causing_hung_q(struct ice_pf __always_unused *pf,
124			  unsigned int __always_unused txqueue)
125{
126	return false;
127}
128
129static inline u8 ice_get_pfc_mode(struct ice_pf *pf)
130{
131	return 0;
132}
133
134static inline void ice_pf_dcb_recfg(struct ice_pf *pf, bool locked) { }
135static inline void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi) { }
136static inline void ice_update_dcb_stats(struct ice_pf *pf) { }
137static inline void
138ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, struct ice_rq_event_info *event) { }
139static inline void ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc) { }
140static inline void
141ice_setup_dcb_qos_info(struct ice_pf *pf, struct iidc_rdma_qos_params *qos_info)
142{
143	qos_info->num_tc = 1;
144	qos_info->tc_info[0].rel_bw = 100;
145}
146#endif /* CONFIG_DCB */
147#endif /* _ICE_DCB_LIB_H_ */