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);
 18u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg *dcbcfg);
 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);
 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_ring *tx_ring,
 32			      struct ice_tx_buf *first);
 33void
 34ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf,
 35				    struct ice_rq_event_info *event);
 36void ice_vsi_cfg_netdev_tc(struct ice_vsi *vsi, u8 ena_tc);
 37
 38/**
 39 * ice_find_q_in_range
 40 * @low: start of queue range for a TC i.e. offset of TC
 41 * @high: start of queue for next TC
 42 * @tx_q: hung_queue/tx_queue
 43 *
 44 * finds if queue 'tx_q' falls between the two offsets of any given TC
 45 */
 46static inline bool ice_find_q_in_range(u16 low, u16 high, unsigned int tx_q)
 47{
 48	return (tx_q >= low) && (tx_q < high);
 49}
 50
 51static inline void
 52ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, struct ice_ring *ring)
 53{
 54	tlan_ctx->cgd_num = ring->dcb_tc;
 55}
 56
 57static inline bool ice_is_dcb_active(struct ice_pf *pf)
 58{
 59	return (test_bit(ICE_FLAG_FW_LLDP_AGENT, pf->flags) ||
 60		test_bit(ICE_FLAG_DCB_ENA, pf->flags));
 61}
 62#else
 63#define ice_dcb_rebuild(pf) do {} while (0)
 64
 65static inline u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
 66{
 67	return ICE_DFLT_TRAFFIC_CLASS;
 68}
 69
 70static inline u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
 71{
 72	return 1;
 73}
 74
 75static inline u8
 76ice_dcb_get_tc(struct ice_vsi __always_unused *vsi,
 77	       int __always_unused queue_index)
 78{
 79	return 0;
 80}
 81
 82static inline int
 83ice_init_pf_dcb(struct ice_pf *pf, bool __always_unused locked)
 84{
 85	dev_dbg(ice_pf_to_dev(pf), "DCB not supported\n");
 86	return -EOPNOTSUPP;
 87}
 88
 89static inline int
 90ice_pf_dcb_cfg(struct ice_pf __always_unused *pf,
 91	       struct ice_dcbx_cfg __always_unused *new_cfg,
 92	       bool __always_unused locked)
 93{
 94	return -EOPNOTSUPP;
 95}
 96
 97static inline int
 98ice_tx_prepare_vlan_flags_dcb(struct ice_ring __always_unused *tx_ring,
 99			      struct ice_tx_buf __always_unused *first)
100{
101	return 0;
102}
103
104static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf)
105{
106	return false;
107}
108
109static inline bool
110ice_is_pfc_causing_hung_q(struct ice_pf __always_unused *pf,
111			  unsigned int __always_unused txqueue)
112{
113	return false;
114}
115
116#define ice_update_dcb_stats(pf) do {} while (0)
117#define ice_pf_dcb_recfg(pf) do {} while (0)
118#define ice_vsi_cfg_dcb_rings(vsi) do {} while (0)
119#define ice_dcb_process_lldp_set_mib_change(pf, event) do {} while (0)
120#define ice_set_cgd_num(tlan_ctx, ring) do {} while (0)
121#define ice_vsi_cfg_netdev_tc(vsi, ena_tc) do {} while (0)
122#endif /* CONFIG_DCB */
123#endif /* _ICE_DCB_LIB_H_ */