drivers/net/ethernet/intel/ice/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
  17 void ice_dcb_rebuild(struct ice_pf *pf);
  18 int ice_dcb_sw_dflt_cfg(struct ice_pf *pf, bool ets_willing, bool locked);
  19 u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg *dcbcfg);
  20 void ice_vsi_set_dcb_tc_cfg(struct ice_vsi *vsi);
  21 bool ice_is_pfc_causing_hung_q(struct ice_pf *pf, unsigned int txqueue);
  22 u8 ice_dcb_get_tc(struct ice_vsi *vsi, int queue_index);
  23 int
  24 ice_pf_dcb_cfg(struct ice_pf *pf, struct ice_dcbx_cfg *new_cfg, bool locked);
  25 int ice_dcb_bwchk(struct ice_pf *pf, struct ice_dcbx_cfg *dcbcfg);
  26 void ice_pf_dcb_recfg(struct ice_pf *pf);
  27 void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi);
  28 int ice_init_pf_dcb(struct ice_pf *pf, bool locked);
  29 void ice_update_dcb_stats(struct ice_pf *pf);
  30 void
  31 ice_tx_prepare_vlan_flags_dcb(struct ice_tx_ring *tx_ring,
  32                               struct ice_tx_buf *first);
  33 void
  34 ice_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  */
  44 static 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
  49 static inline void
  50 ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, u8 dcb_tc)
  51 {
  52         tlan_ctx->cgd_num = dcb_tc;
  53 }
  54
  55 static 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
  61 static 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
  67 static inline void ice_dcb_rebuild(struct ice_pf *pf) { }
  68
  69 static 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
  75 static inline u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
  76 {
  77         return ICE_DFLT_TRAFFIC_CLASS;
  78 }
  79
  80 static inline u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused *dcbcfg)
  81 {
  82         return 1;
  83 }
  84
  85 static inline u8
  86 ice_dcb_get_tc(struct ice_vsi __always_unused *vsi,
  87                int __always_unused queue_index)
  88 {
  89         return 0;
  90 }
  91
  92 static inline int
  93 ice_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
  99 static inline int
 100 ice_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
 107 static inline int
 108 ice_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
 114 static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf)
 115 {
 116         return false;
 117 }
 118
 119 static inline bool
 120 ice_is_pfc_causing_hung_q(struct ice_pf __always_unused *pf,
 121                           unsigned int __always_unused txqueue)
 122 {
 123         return false;
 124 }
 125
 126 static inline u8 ice_get_pfc_mode(struct ice_pf *pf)
 127 {
 128         return 0;
 129 }
 130
 131 static inline void ice_pf_dcb_recfg(struct ice_pf *pf) { }
 132 static inline void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi) { }
 133 static inline void ice_update_dcb_stats(struct ice_pf *pf) { }
 134 static inline void
 135 ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, struct ice_rq_event_info *event) { }
 136 static 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_ */