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 */
ice_find_q_in_range(u16 low,u16 high,unsigned int tx_q)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
ice_set_cgd_num(struct ice_tlan_ctx * tlan_ctx,struct ice_ring * ring)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
ice_is_dcb_active(struct ice_pf * pf)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 #define ice_dcb_rebuild(pf) do {} while (0)
64
ice_dcb_get_ena_tc(struct ice_dcbx_cfg __always_unused * dcbcfg)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
ice_dcb_get_num_tc(struct ice_dcbx_cfg __always_unused * dcbcfg)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
ice_dcb_get_tc(struct ice_vsi __always_unused * vsi,int __always_unused queue_index)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
ice_init_pf_dcb(struct ice_pf * pf,bool __always_unused locked)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
ice_pf_dcb_cfg(struct ice_pf __always_unused * pf,struct ice_dcbx_cfg __always_unused * new_cfg,bool __always_unused locked)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
ice_tx_prepare_vlan_flags_dcb(struct ice_ring __always_unused * tx_ring,struct ice_tx_buf __always_unused * first)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
ice_is_dcb_active(struct ice_pf __always_unused * pf)104 static inline bool ice_is_dcb_active(struct ice_pf __always_unused *pf)
105 {
106 return false;
107 }
108
109 static inline bool
ice_is_pfc_causing_hung_q(struct ice_pf __always_unused * pf,unsigned int __always_unused txqueue)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 #define ice_update_dcb_stats(pf) do {} while (0)
117 #define ice_pf_dcb_recfg(pf) do {} while (0)
118 #define ice_vsi_cfg_dcb_rings(vsi) do {} while (0)
119 #define ice_dcb_process_lldp_set_mib_change(pf, event) do {} while (0)
120 #define ice_set_cgd_num(tlan_ctx, ring) do {} while (0)
121 #define ice_vsi_cfg_netdev_tc(vsi, ena_tc) do {} while (0)
122 #endif /* CONFIG_DCB */
123 #endif /* _ICE_DCB_LIB_H_ */
124
