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 #include <rte_ethdev.h>
8 #include <rte_flow.h>
9
10 #define HNS3_ETH_RSS_SUPPORT ( \
11 RTE_ETH_RSS_FRAG_IPV4 | \
12 RTE_ETH_RSS_NONFRAG_IPV4_TCP | \
13 RTE_ETH_RSS_NONFRAG_IPV4_UDP | \
14 RTE_ETH_RSS_NONFRAG_IPV4_SCTP | \
15 RTE_ETH_RSS_NONFRAG_IPV4_OTHER | \
16 RTE_ETH_RSS_FRAG_IPV6 | \
17 RTE_ETH_RSS_NONFRAG_IPV6_TCP | \
18 RTE_ETH_RSS_NONFRAG_IPV6_UDP | \
19 RTE_ETH_RSS_NONFRAG_IPV6_SCTP | \
20 RTE_ETH_RSS_NONFRAG_IPV6_OTHER | \
21 RTE_ETH_RSS_L3_SRC_ONLY | \
22 RTE_ETH_RSS_L3_DST_ONLY | \
23 RTE_ETH_RSS_L4_SRC_ONLY | \
24 RTE_ETH_RSS_L4_DST_ONLY)
25
26 #define HNS3_RSS_IND_TBL_SIZE 512 /* The size of hash lookup table */
27 #define HNS3_RSS_IND_TBL_SIZE_MAX 2048
28 #define HNS3_RSS_KEY_SIZE 40
29 #define HNS3_RSS_SET_BITMAP_MSK 0xffff
30
31 #define HNS3_RSS_HASH_ALGO_TOEPLITZ 0
32 #define HNS3_RSS_HASH_ALGO_SIMPLE 1
33 #define HNS3_RSS_HASH_ALGO_SYMMETRIC_TOEP 2
34 #define HNS3_RSS_HASH_ALGO_MASK 0xf
35
36 struct hns3_rss_tuple_cfg {
37 uint64_t rss_tuple_fields;
38 };
39
40 #define HNS3_RSS_QUEUES_BUFFER_NUM 64 /* Same as the Max rx/tx queue num */
41 struct hns3_rss_conf {
42 /* RSS parameters :algorithm, flow_types, key, queue */
43 struct rte_flow_action_rss conf;
44 uint8_t hash_algo; /* hash function type defined by hardware */
45 uint8_t key[HNS3_RSS_KEY_SIZE]; /* Hash key */
46 uint16_t rss_indirection_tbl[HNS3_RSS_IND_TBL_SIZE_MAX];
47 uint16_t queue[HNS3_RSS_QUEUES_BUFFER_NUM]; /* Queues indices to use */
48 bool valid; /* check if RSS rule is valid */
49 /*
50 * For IPv6 SCTP packets type, check whether the NIC hardware support
51 * RSS hash using the src/dst port as the input tuple. For Kunpeng920
52 * NIC hardware, it is not supported
53 */
54 bool ipv6_sctp_offload_supported;
55 };
56
57 #ifndef ilog2
rss_ilog2(uint32_t x)58 static inline int rss_ilog2(uint32_t x)
59 {
60 int log = 0;
61 x >>= 1;
62
63 while (x) {
64 log++;
65 x >>= 1;
66 }
67 return log;
68 }
69 #define ilog2(x) rss_ilog2(x)
70 #endif
71
fls(uint32_t x)72 static inline uint32_t fls(uint32_t x)
73 {
74 uint32_t position;
75 uint32_t i;
76
77 if (x == 0)
78 return 0;
79
80 for (i = (x >> 1), position = 0; i != 0; ++position)
81 i >>= 1;
82
83 return position + 1;
84 }
85
roundup_pow_of_two(uint32_t x)86 static inline uint32_t roundup_pow_of_two(uint32_t x)
87 {
88 return 1UL << fls(x - 1);
89 }
90
91 struct hns3_adapter;
92
93 int hns3_dev_rss_hash_update(struct rte_eth_dev *dev,
94 struct rte_eth_rss_conf *rss_conf);
95 int hns3_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
96 struct rte_eth_rss_conf *rss_conf);
97 int hns3_dev_rss_reta_update(struct rte_eth_dev *dev,
98 struct rte_eth_rss_reta_entry64 *reta_conf,
99 uint16_t reta_size);
100 int hns3_dev_rss_reta_query(struct rte_eth_dev *dev,
101 struct rte_eth_rss_reta_entry64 *reta_conf,
102 uint16_t reta_size);
103 void hns3_rss_set_default_args(struct hns3_hw *hw);
104 int hns3_set_rss_indir_table(struct hns3_hw *hw, uint16_t *indir,
105 uint16_t size);
106 int hns3_rss_reset_indir_table(struct hns3_hw *hw);
107 int hns3_config_rss(struct hns3_adapter *hns);
108 void hns3_rss_uninit(struct hns3_adapter *hns);
109 int hns3_set_rss_tuple_by_rss_hf(struct hns3_hw *hw, uint64_t rss_hf);
110 int hns3_rss_set_algo_key(struct hns3_hw *hw, const uint8_t *key);
111 int hns3_restore_rss_filter(struct rte_eth_dev *dev);
112
113 #endif /* _HNS3_RSS_H_ */
114