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 u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg *dcbcfg); 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_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 void 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 */ 46 static 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 51 static inline void 52 ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, struct ice_ring *ring) 53 { 54 tlan_ctx->cgd_num = ring->dcb_tc; 55 } 56 57 static 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 static inline void ice_dcb_rebuild(struct ice_pf *pf) { } 64 65 static inline u8 ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused *dcbcfg) 66 { 67 return ICE_DFLT_TRAFFIC_CLASS; 68 } 69 70 static inline u8 ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused *dcbcfg) 71 { 72 return 1; 73 } 74 75 static inline u8 76 ice_dcb_get_tc(struct ice_vsi __always_unused *vsi, 77 int __always_unused queue_index) 78 { 79 return 0; 80 } 81 82 static inline int 83 ice_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 89 static inline int 90 ice_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 97 static inline int 98 ice_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 } 103 104 static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf) 105 { 106 return false; 107 } 108 109 static inline bool 110 ice_is_pfc_causing_hung_q(struct ice_pf __always_unused *pf, 111 unsigned int __always_unused txqueue) 112 { 113 return false; 114 } 115 116 static inline void ice_pf_dcb_recfg(struct ice_pf *pf) { } 117 static inline void ice_vsi_cfg_dcb_rings(struct ice_vsi *vsi) { } 118 static inline void ice_update_dcb_stats(struct ice_pf *pf) { } 119 static inline void 120 ice_dcb_process_lldp_set_mib_change(struct ice_pf *pf, struct ice_rq_event_info *event) { } 121 static inline void ice_vsi_cfg_netdev_tc(struct ice_vsi *vsi, u8 ena_tc) { } 122 static inline void ice_set_cgd_num(struct ice_tlan_ctx *tlan_ctx, struct ice_ring *ring) { } 123 #endif /* CONFIG_DCB */ 124 #endif /* _ICE_DCB_LIB_H_ */ 125