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_ */ 111