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);
  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#else
  57#define ice_dcb_rebuild(pf) do {} while (0)
  58
  59static inline u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
  60{
  61        return ICE_DFLT_TRAFFIC_CLASS;
  62}
  63
  64static inline u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
  65{
  66        return 1;
  67}
  68
  69static inline u8
  70ice_dcb_get_tc(struct ice_vsi __always_unused *vsi,
  71               int __always_unused queue_index)
  72{
  73        return 0;
  74}
  75
  76static inline int
  77ice_init_pf_dcb(struct ice_pf *pf, bool __always_unused locked)
  78{
  79        dev_dbg(ice_pf_to_dev(pf), "DCB not supported\n");
  80        return -EOPNOTSUPP;
  81}
  82
  83static inline int
  84ice_pf_dcb_cfg(struct ice_pf __always_unused *pf,
  85               struct ice_dcbx_cfg __always_unused *new_cfg,
  86               bool __always_unused locked)
  87{
  88        return -EOPNOTSUPP;
  89}
  90
  91static inline int
  92ice_tx_prepare_vlan_flags_dcb(struct ice_ring __always_unused *tx_ring,
  93                              struct ice_tx_buf __always_unused *first)
  94{
  95        return 0;
  96}
  97
  98static inline bool
  99ice_is_pfc_causing_hung_q(struct ice_pf __always_unused *pf,
 100                          unsigned int __always_unused txqueue)
 101{
 102        return false;
 103}
 104
 105#define ice_update_dcb_stats(pf) do {} while (0)
 106#define ice_pf_dcb_recfg(pf) do {} while (0)
 107#define ice_vsi_cfg_dcb_rings(vsi) do {} while (0)
 108#define ice_dcb_process_lldp_set_mib_change(pf, event) do {} while (0)
 109#define ice_set_cgd_num(tlan_ctx, ring) do {} while (0)
 110#define ice_vsi_cfg_netdev_tc(vsi, ena_tc) do {} while (0)
 111#endif /* CONFIG_DCB */
 112#endif /* _ICE_DCB_LIB_H_ */
 113