common/sfc_efx/base: implement Tx control path for Riverhead
[dpdk.git] / drivers / net / hns3 / hns3_rss.h
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         uint8_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
53 #ifndef ilog2
54 static inline int rss_ilog2(uint32_t x)
55 {
56         int log = 0;
57         x >>= 1;
58
59         while (x) {
60                 log++;
61                 x >>= 1;
62         }
63         return log;
64 }
65 #define ilog2(x) rss_ilog2(x)
66 #endif
67
68 static inline uint32_t fls(uint32_t x)
69 {
70         uint32_t position;
71         uint32_t i;
72
73         if (x == 0)
74                 return 0;
75
76         for (i = (x >> 1), position = 0; i != 0; ++position)
77                 i >>= 1;
78
79         return position + 1;
80 }
81
82 static inline uint32_t roundup_pow_of_two(uint32_t x)
83 {
84         return 1UL << fls(x - 1);
85 }
86
87 struct hns3_adapter;
88
89 int hns3_dev_rss_hash_update(struct rte_eth_dev *dev,
90                              struct rte_eth_rss_conf *rss_conf);
91 int hns3_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
92                                struct rte_eth_rss_conf *rss_conf);
93 int hns3_dev_rss_reta_update(struct rte_eth_dev *dev,
94                              struct rte_eth_rss_reta_entry64 *reta_conf,
95                              uint16_t reta_size);
96 int hns3_dev_rss_reta_query(struct rte_eth_dev *dev,
97                             struct rte_eth_rss_reta_entry64 *reta_conf,
98                             uint16_t reta_size);
99 void hns3_set_default_rss_args(struct hns3_hw *hw);
100 int hns3_set_rss_indir_table(struct hns3_hw *hw, uint8_t *indir, uint16_t size);
101 int hns3_rss_reset_indir_table(struct hns3_hw *hw);
102 int hns3_config_rss(struct hns3_adapter *hns);
103 void hns3_rss_uninit(struct hns3_adapter *hns);
104 int hns3_set_rss_tuple_by_rss_hf(struct hns3_hw *hw,
105                                  struct hns3_rss_tuple_cfg *tuple,
106                                  uint64_t rss_hf);
107 int hns3_set_rss_algo_key(struct hns3_hw *hw, const uint8_t *key);
108 int hns3_restore_rss_filter(struct rte_eth_dev *dev);
109
110 #endif /* _HNS3_RSS_H_ */