1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2018-2019 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 ETH_RSS_FRAG_IPV4 | \
12 ETH_RSS_NONFRAG_IPV4_TCP | \
13 ETH_RSS_NONFRAG_IPV4_UDP | \
14 ETH_RSS_NONFRAG_IPV4_SCTP | \
15 ETH_RSS_NONFRAG_IPV4_OTHER | \
16 ETH_RSS_FRAG_IPV6 | \
17 ETH_RSS_NONFRAG_IPV6_TCP | \
18 ETH_RSS_NONFRAG_IPV6_UDP | \
19 ETH_RSS_NONFRAG_IPV6_SCTP | \
20 ETH_RSS_NONFRAG_IPV6_OTHER | \
21 ETH_RSS_L3_SRC_ONLY | \
22 ETH_RSS_L3_DST_ONLY | \
23 ETH_RSS_L4_SRC_ONLY | \
24 ETH_RSS_L4_DST_ONLY)
25
26 #define HNS3_RSS_IND_TBL_SIZE 512 /* The size of hash lookup table */
27 #define HNS3_RSS_KEY_SIZE 40
28 #define HNS3_RSS_CFG_TBL_NUM \
29 (HNS3_RSS_IND_TBL_SIZE / HNS3_RSS_CFG_TBL_SIZE)
30 #define HNS3_RSS_SET_BITMAP_MSK 0xffff
31
32 #define HNS3_RSS_HASH_ALGO_TOEPLITZ 0
33 #define HNS3_RSS_HASH_ALGO_SIMPLE 1
34 #define HNS3_RSS_HASH_ALGO_SYMMETRIC_TOEP 2
35 #define HNS3_RSS_HASH_ALGO_MASK 0xf
36
37 struct hns3_rss_tuple_cfg {
38 uint64_t rss_tuple_fields;
39 };
40
41 #define HNS3_RSS_QUEUES_BUFFER_NUM 64 /* Same as the Max rx/tx queue num */
42 struct hns3_rss_conf {
43 /* RSS parameters :algorithm, flow_types, key, queue */
44 struct rte_flow_action_rss conf;
45 uint8_t hash_algo; /* hash function type definited by hardware */
46 uint8_t key[HNS3_RSS_KEY_SIZE]; /* Hash key */
47 struct hns3_rss_tuple_cfg rss_tuple_sets;
48 uint16_t rss_indirection_tbl[HNS3_RSS_IND_TBL_SIZE]; /* Shadow table */
49 uint16_t queue[HNS3_RSS_QUEUES_BUFFER_NUM]; /* Queues indices to use */
50 bool valid; /* check if RSS rule is valid */
51 /*
52 * For IPv6 SCTP packets type, check whether the NIC hardware support
53 * RSS hash using the src/dst port as the input tuple. For Kunpeng920
54 * NIC hardware, it is not supported
55 */
56 bool ipv6_sctp_offload_supported;
57 };
58
59 #ifndef ilog2
rss_ilog2(uint32_t x)60 static inline int rss_ilog2(uint32_t x)
61 {
62 int log = 0;
63 x >>= 1;
64
65 while (x) {
66 log++;
67 x >>= 1;
68 }
69 return log;
70 }
71 #define ilog2(x) rss_ilog2(x)
72 #endif
73
fls(uint32_t x)74 static inline uint32_t fls(uint32_t x)
75 {
76 uint32_t position;
77 uint32_t i;
78
79 if (x == 0)
80 return 0;
81
82 for (i = (x >> 1), position = 0; i != 0; ++position)
83 i >>= 1;
84
85 return position + 1;
86 }
87
roundup_pow_of_two(uint32_t x)88 static inline uint32_t roundup_pow_of_two(uint32_t x)
89 {
90 return 1UL << fls(x - 1);
91 }
92
93 struct hns3_adapter;
94
95 int hns3_dev_rss_hash_update(struct rte_eth_dev *dev,
96 struct rte_eth_rss_conf *rss_conf);
97 int hns3_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
98 struct rte_eth_rss_conf *rss_conf);
99 int hns3_dev_rss_reta_update(struct rte_eth_dev *dev,
100 struct rte_eth_rss_reta_entry64 *reta_conf,
101 uint16_t reta_size);
102 int hns3_dev_rss_reta_query(struct rte_eth_dev *dev,
103 struct rte_eth_rss_reta_entry64 *reta_conf,
104 uint16_t reta_size);
105 void hns3_set_default_rss_args(struct hns3_hw *hw);
106 int hns3_set_rss_indir_table(struct hns3_hw *hw, uint16_t *indir,
107 uint16_t size);
108 int hns3_rss_reset_indir_table(struct hns3_hw *hw);
109 int hns3_config_rss(struct hns3_adapter *hns);
110 void hns3_rss_uninit(struct hns3_adapter *hns);
111 int hns3_set_rss_tuple_by_rss_hf(struct hns3_hw *hw,
112 struct hns3_rss_tuple_cfg *tuple,
113 uint64_t rss_hf);
114 int hns3_set_rss_algo_key(struct hns3_hw *hw, const uint8_t *key);
115 int hns3_restore_rss_filter(struct rte_eth_dev *dev);
116
117 #endif /* _HNS3_RSS_H_ */
118