1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2018-2021 HiSilicon Limited.
3 */
4
5 #ifndef HNS3_RSS_H
6 #define HNS3_RSS_H
7
8 #include <rte_ethdev.h>
9 #include <rte_flow.h>
10
11 #define HNS3_RSS_SUPPORT_L3_SRC_DST (RTE_ETH_RSS_L3_SRC_ONLY | \
12 RTE_ETH_RSS_L3_DST_ONLY)
13 #define HNS3_RSS_SUPPORT_L4_SRC_DST (RTE_ETH_RSS_L4_SRC_ONLY | \
14 RTE_ETH_RSS_L4_DST_ONLY)
15 #define HNS3_RSS_SUPPORT_L3L4 (HNS3_RSS_SUPPORT_L3_SRC_DST | \
16 HNS3_RSS_SUPPORT_L4_SRC_DST)
17
18 #define HNS3_RSS_SUPPORT_FLOW_TYPE (RTE_ETH_RSS_IPV4 | \
19 RTE_ETH_RSS_FRAG_IPV4 | \
20 RTE_ETH_RSS_NONFRAG_IPV4_TCP | \
21 RTE_ETH_RSS_NONFRAG_IPV4_UDP | \
22 RTE_ETH_RSS_NONFRAG_IPV4_SCTP | \
23 RTE_ETH_RSS_NONFRAG_IPV4_OTHER | \
24 RTE_ETH_RSS_IPV6 | \
25 RTE_ETH_RSS_FRAG_IPV6 | \
26 RTE_ETH_RSS_NONFRAG_IPV6_TCP | \
27 RTE_ETH_RSS_NONFRAG_IPV6_UDP | \
28 RTE_ETH_RSS_NONFRAG_IPV6_SCTP | \
29 RTE_ETH_RSS_NONFRAG_IPV6_OTHER)
30
31 #define HNS3_ETH_RSS_SUPPORT (HNS3_RSS_SUPPORT_FLOW_TYPE | \
32 HNS3_RSS_SUPPORT_L3L4)
33
34 enum hns3_tuple_field {
35 /* IPV4_TCP ENABLE FIELD */
36 HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_D = 0,
37 HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_S,
38 HNS3_RSS_FIELD_IPV4_TCP_EN_IP_D,
39 HNS3_RSS_FIELD_IPV4_TCP_EN_IP_S,
40
41 /* IPV4_UDP ENABLE FIELD */
42 HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_D = 8,
43 HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_S,
44 HNS3_RSS_FIELD_IPV4_UDP_EN_IP_D,
45 HNS3_RSS_FIELD_IPV4_UDP_EN_IP_S,
46
47 /* IPV4_SCTP ENABLE FIELD */
48 HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_D = 16,
49 HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_S,
50 HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_D,
51 HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_S,
52
53 /* IPV4 ENABLE FIELD */
54 HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_D = 24,
55 HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_S,
56 HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_D,
57 HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_S,
58
59 /* IPV6_TCP ENABLE FIELD */
60 HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_D = 32,
61 HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_S,
62 HNS3_RSS_FIELD_IPV6_TCP_EN_IP_D,
63 HNS3_RSS_FIELD_IPV6_TCP_EN_IP_S,
64
65 /* IPV6_UDP ENABLE FIELD */
66 HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_D = 40,
67 HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_S,
68 HNS3_RSS_FIELD_IPV6_UDP_EN_IP_D,
69 HNS3_RSS_FIELD_IPV6_UDP_EN_IP_S,
70
71 /* IPV6_SCTP ENABLE FIELD */
72 HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_D = 48,
73 HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_S,
74 HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D,
75 HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S,
76
77 /* IPV6 ENABLE FIELD */
78 HNS3_RSS_FIELD_IPV6_NONFRAG_IP_D = 56,
79 HNS3_RSS_FIELD_IPV6_NONFRAG_IP_S,
80 HNS3_RSS_FIELD_IPV6_FRAG_IP_D,
81 HNS3_RSS_FIELD_IPV6_FRAG_IP_S
82 };
83
84 #define HNS3_RSS_PCTYPE_IPV4_TCP BIT_ULL(0)
85 #define HNS3_RSS_PCTYPE_IPV4_UDP BIT_ULL(8)
86 #define HNS3_RSS_PCTYPE_IPV4_SCTP BIT_ULL(16)
87 #define HNS3_RSS_PCTYPE_IPV4_NONF BIT_ULL(24)
88 #define HNS3_RSS_PCTYPE_IPV4_FLAG BIT_ULL(26)
89 #define HNS3_RSS_PCTYPE_IPV6_TCP BIT_ULL(32)
90 #define HNS3_RSS_PCTYPE_IPV6_UDP BIT_ULL(40)
91 #define HNS3_RSS_PCTYPE_IPV6_SCTP BIT_ULL(48)
92 #define HNS3_RSS_PCTYPE_IPV6_NONF BIT_ULL(56)
93 #define HNS3_RSS_PCTYPE_IPV6_FLAG BIT_ULL(58)
94
95 #define HNS3_RSS_TUPLE_IPV4_TCP_M GENMASK(3, 0)
96 #define HNS3_RSS_TUPLE_IPV4_UDP_M GENMASK(11, 8)
97 #define HNS3_RSS_TUPLE_IPV4_SCTP_M GENMASK(19, 16)
98 #define HNS3_RSS_TUPLE_IPV4_NONF_M GENMASK(25, 24)
99 #define HNS3_RSS_TUPLE_IPV4_FLAG_M GENMASK(27, 26)
100 #define HNS3_RSS_TUPLE_IPV6_TCP_M GENMASK(35, 32)
101 #define HNS3_RSS_TUPLE_IPV6_UDP_M GENMASK(43, 40)
102 #define HNS3_RSS_TUPLE_IPV6_SCTP_M GENMASK(51, 48)
103 #define HNS3_RSS_TUPLE_IPV6_NONF_M GENMASK(57, 56)
104 #define HNS3_RSS_TUPLE_IPV6_FLAG_M GENMASK(59, 58)
105
106 #define HNS3_RSS_IND_TBL_SIZE 512 /* The size of hash lookup table */
107 #define HNS3_RSS_IND_TBL_SIZE_MAX 2048
108 #define HNS3_RSS_KEY_SIZE 40
109 #define HNS3_RSS_KEY_SIZE_MAX 128
110 #define HNS3_RSS_SET_BITMAP_MSK 0xffff
111
112 #define HNS3_RSS_HASH_ALGO_TOEPLITZ 0
113 #define HNS3_RSS_HASH_ALGO_SIMPLE 1
114 #define HNS3_RSS_HASH_ALGO_SYMMETRIC_TOEP 2
115 #define HNS3_RSS_HASH_ALGO_MASK 0xf
116
117 /* Same as the Max queue num under TC */
118 #define HNS3_RSS_QUEUES_BUFFER_NUM 512
119 struct hns3_rss_conf {
120 uint64_t rss_hf;
121 uint8_t hash_algo; /* hash function type defined by hardware */
122 uint8_t key[HNS3_RSS_KEY_SIZE_MAX]; /* Hash key */
123 uint16_t rss_indirection_tbl[HNS3_RSS_IND_TBL_SIZE_MAX];
124 /*
125 * For IPv6 SCTP packets type, check whether the NIC hardware support
126 * RSS hash using the src/dst port as the input tuple. For Kunpeng920
127 * NIC hardware, it is not supported
128 */
129 bool ipv6_sctp_offload_supported;
130 };
131
132 #ifndef ilog2
rss_ilog2(uint32_t x)133 static inline int rss_ilog2(uint32_t x)
134 {
135 int log = 0;
136 x >>= 1;
137
138 while (x) {
139 log++;
140 x >>= 1;
141 }
142 return log;
143 }
144 #define ilog2(x) rss_ilog2(x)
145 #endif
146
fls(uint32_t x)147 static inline uint32_t fls(uint32_t x)
148 {
149 uint32_t position;
150 uint32_t i;
151
152 if (x == 0)
153 return 0;
154
155 for (i = (x >> 1), position = 0; i != 0; ++position)
156 i >>= 1;
157
158 return position + 1;
159 }
160
roundup_pow_of_two(uint32_t x)161 static inline uint32_t roundup_pow_of_two(uint32_t x)
162 {
163 return 1UL << fls(x - 1);
164 }
165
166 extern const uint8_t hns3_hash_key[HNS3_RSS_KEY_SIZE];
167
168 struct hns3_adapter;
169 struct hns3_hw;
170
171 int hns3_dev_rss_hash_update(struct rte_eth_dev *dev,
172 struct rte_eth_rss_conf *rss_conf);
173 int hns3_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
174 struct rte_eth_rss_conf *rss_conf);
175 int hns3_dev_rss_reta_update(struct rte_eth_dev *dev,
176 struct rte_eth_rss_reta_entry64 *reta_conf,
177 uint16_t reta_size);
178 int hns3_dev_rss_reta_query(struct rte_eth_dev *dev,
179 struct rte_eth_rss_reta_entry64 *reta_conf,
180 uint16_t reta_size);
181 void hns3_rss_set_default_args(struct hns3_hw *hw);
182 int hns3_set_rss_indir_table(struct hns3_hw *hw, uint16_t *indir,
183 uint16_t size);
184 int hns3_rss_reset_indir_table(struct hns3_hw *hw);
185 int hns3_config_rss(struct hns3_adapter *hns);
186 void hns3_rss_uninit(struct hns3_adapter *hns);
187 bool hns3_check_rss_types_valid(struct hns3_hw *hw, uint64_t types);
188 int hns3_set_rss_tuple_by_rss_hf(struct hns3_hw *hw, uint64_t rss_hf);
189 int hns3_set_rss_tuple_field(struct hns3_hw *hw, uint64_t tuple_fields);
190 int hns3_get_rss_tuple_field(struct hns3_hw *hw, uint64_t *tuple_fields);
191 uint64_t hns3_rss_calc_tuple_filed(uint64_t rss_hf);
192 int hns3_update_rss_algo_key(struct hns3_hw *hw, uint8_t hash_algo,
193 uint8_t *key, uint8_t key_len);
194
195 #endif /* HNS3_RSS_H */
196