1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29#ifndef _DCB_CONFIG_H_
30#define _DCB_CONFIG_H_
31
32#include <linux/dcbnl.h>
33#include "ixgbe_type.h"
34
35
36
37#define IXGBE_MAX_PACKET_BUFFERS 8
38#define MAX_USER_PRIORITY 8
39#define MAX_BW_GROUP 8
40#define BW_PERCENT 100
41
42#define DCB_TX_CONFIG 0
43#define DCB_RX_CONFIG 1
44
45
46#define DCB_SUCCESS 0
47#define DCB_ERR_CONFIG -1
48#define DCB_ERR_PARAM -2
49
50
51
52#define DCB_ERR_BW_GROUP -3
53
54#define DCB_ERR_TC_BW -4
55
56#define DCB_ERR_LS_GS -5
57
58#define DCB_ERR_LS_BW_NONZERO -6
59
60#define DCB_ERR_LS_BWG_NONZERO -7
61
62#define DCB_ERR_TC_BW_ZERO -8
63
64#define DCB_NOT_IMPLEMENTED 0x7FFFFFFF
65
66struct dcb_pfc_tc_debug {
67 u8 tc;
68 u8 pause_status;
69 u64 pause_quanta;
70};
71
72enum strict_prio_type {
73 prio_none = 0,
74 prio_group,
75 prio_link
76};
77
78
79#define IXGBE_DCB_PG_SUPPORT 0x00000001
80#define IXGBE_DCB_PFC_SUPPORT 0x00000002
81#define IXGBE_DCB_BCN_SUPPORT 0x00000004
82#define IXGBE_DCB_UP2TC_SUPPORT 0x00000008
83#define IXGBE_DCB_GSP_SUPPORT 0x00000010
84
85#define IXGBE_DCB_8_TC_SUPPORT 0x80
86
87struct dcb_support {
88
89 u32 capabilities;
90
91
92
93
94 u8 traffic_classes;
95 u8 pfc_traffic_classes;
96};
97
98
99struct tc_bw_alloc {
100 u8 bwg_id;
101 u8 bwg_percent;
102 u8 link_percent;
103 u8 up_to_tc_bitmap;
104 u16 data_credits_refill;
105 u16 data_credits_max;
106
107 enum strict_prio_type prio_type;
108};
109
110enum dcb_pfc_type {
111 pfc_disabled = 0,
112 pfc_enabled_full,
113 pfc_enabled_tx,
114 pfc_enabled_rx
115};
116
117
118struct tc_configuration {
119 struct tc_bw_alloc path[2];
120 enum dcb_pfc_type dcb_pfc;
121
122 u16 desc_credits_max;
123 u8 tc;
124};
125
126struct dcb_num_tcs {
127 u8 pg_tcs;
128 u8 pfc_tcs;
129};
130
131struct ixgbe_dcb_config {
132 struct dcb_support support;
133 struct dcb_num_tcs num_tcs;
134 struct tc_configuration tc_config[MAX_TRAFFIC_CLASS];
135 u8 bw_percentage[2][MAX_BW_GROUP];
136 bool pfc_mode_enable;
137
138 u32 dcb_cfg_version;
139 u32 link_speed;
140};
141
142
143void ixgbe_dcb_unpack_pfc(struct ixgbe_dcb_config *cfg, u8 *pfc_en);
144void ixgbe_dcb_unpack_refill(struct ixgbe_dcb_config *, int, u16 *);
145void ixgbe_dcb_unpack_max(struct ixgbe_dcb_config *, u16 *);
146void ixgbe_dcb_unpack_bwgid(struct ixgbe_dcb_config *, int, u8 *);
147void ixgbe_dcb_unpack_prio(struct ixgbe_dcb_config *, int, u8 *);
148void ixgbe_dcb_unpack_map(struct ixgbe_dcb_config *, int, u8 *);
149u8 ixgbe_dcb_get_tc_from_up(struct ixgbe_dcb_config *, int, u8);
150
151
152s32 ixgbe_dcb_calculate_tc_credits(struct ixgbe_hw *,
153 struct ixgbe_dcb_config *, int, u8);
154
155
156s32 ixgbe_dcb_hw_ets(struct ixgbe_hw *hw, struct ieee_ets *ets, int max);
157s32 ixgbe_dcb_hw_ets_config(struct ixgbe_hw *hw, u16 *refill, u16 *max,
158 u8 *bwg_id, u8 *prio_type, u8 *tc_prio);
159s32 ixgbe_dcb_hw_pfc_config(struct ixgbe_hw *hw, u8 pfc_en, u8 *tc_prio);
160s32 ixgbe_dcb_hw_config(struct ixgbe_hw *, struct ixgbe_dcb_config *);
161
162void ixgbe_dcb_read_rtrup2tc(struct ixgbe_hw *hw, u8 *map);
163
164
165#define DCB_CREDIT_QUANTUM 64
166#define MAX_CREDIT_REFILL 511
167#define DCB_MAX_TSO_SIZE (32*1024)
168#define MINIMUM_CREDIT_FOR_TSO (DCB_MAX_TSO_SIZE/64 + 1)
169#define MAX_CREDIT 4095
170
171#endif
172
