LXR linux/drivers/net/ethernet/intel/ice/ice_dcb

   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);
  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_dcb_process_lldp_set_mib_change(struct ice_pf *pf,
  35                                    struct ice_rq_event_info *event);
  36/**
  37 * ice_find_q_in_range
  38 * @low: start of queue range for a TC i.e. offset of TC
  39 * @high: start of queue for next TC
  40 * @tx_q: hung_queue/tx_queue
  41 *
  42 * finds if queue 'tx_q' falls between the two offsets of any given TC
  43 */
  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 void
  50ice_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#else
  67static 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 u8
  86ice_dcb_get_tc(struct ice_vsi __always_unused *vsi,
  87               int __always_unused queue_index)
  88{
  89        return 0;
  90}
  91
  92static inline int
  93ice_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 int
 100ice_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 int
 108ice_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 bool
 120ice_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) { }
 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 void
 135ice_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