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, bool locked);
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, bool locked) { }
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

source code of linux/drivers/net/ethernet/intel/ice/ice_dcb_lib.h