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 22 #define HNS3_RSS_IND_TBL_SIZE 512 /* The size of hash lookup table */ 23 #define HNS3_RSS_KEY_SIZE 40 24 #define HNS3_RSS_CFG_TBL_NUM \ 25 (HNS3_RSS_IND_TBL_SIZE / HNS3_RSS_CFG_TBL_SIZE) 26 #define HNS3_RSS_SET_BITMAP_MSK 0xffff 27 28 #define HNS3_RSS_HASH_ALGO_TOEPLITZ 0 29 #define HNS3_RSS_HASH_ALGO_SIMPLE 1 30 #define HNS3_RSS_HASH_ALGO_MASK 0xf 31 32 #define HNS3_RSS_INPUT_TUPLE_OTHER GENMASK(3, 0) 33 #define HNS3_RSS_INPUT_TUPLE_SCTP GENMASK(4, 0) 34 #define HNS3_IP_FRAG_BIT_MASK GENMASK(3, 2) 35 #define HNS3_IP_OTHER_BIT_MASK GENMASK(1, 0) 36 37 struct hns3_rss_tuple_cfg { 38 uint8_t ipv4_tcp_en; /* Bit8.0~8.3 */ 39 uint8_t ipv4_udp_en; /* Bit9.0~9.3 */ 40 uint8_t ipv4_sctp_en; /* Bit10.0~10.4 */ 41 uint8_t ipv4_fragment_en; /* Bit11.0~11.3 */ 42 uint8_t ipv6_tcp_en; /* Bit12.0~12.3 */ 43 uint8_t ipv6_udp_en; /* Bit13.0~13.3 */ 44 uint8_t ipv6_sctp_en; /* Bit14.0~14.4 */ 45 uint8_t ipv6_fragment_en; /* Bit15.0~15.3 */ 46 }; 47 48 #define HNS3_RSS_QUEUES_BUFFER_NUM 64 /* Same as the Max rx/tx queue num */ 49 struct hns3_rss_conf { 50 /* RSS parameters :algorithm, flow_types, key, queue */ 51 struct rte_flow_action_rss conf; 52 uint8_t key[HNS3_RSS_KEY_SIZE]; /* Hash key */ 53 struct hns3_rss_tuple_cfg rss_tuple_sets; 54 uint8_t rss_indirection_tbl[HNS3_RSS_IND_TBL_SIZE]; /* Shadow table */ 55 uint16_t queue[HNS3_RSS_QUEUES_BUFFER_NUM]; /* Queues indices to use */ 56 }; 57 58 #ifndef ilog2 59 static inline int rss_ilog2(uint32_t x) 60 { 61 int log = 0; 62 x >>= 1; 63 64 while (x) { 65 log++; 66 x >>= 1; 67 } 68 return log; 69 } 70 #define ilog2(x) rss_ilog2(x) 71 #endif 72 73 static inline uint32_t fls(uint32_t x) 74 { 75 uint32_t position; 76 uint32_t i; 77 78 if (x == 0) 79 return 0; 80 81 for (i = (x >> 1), position = 0; i != 0; ++position) 82 i >>= 1; 83 84 return position + 1; 85 } 86 87 static inline uint32_t roundup_pow_of_two(uint32_t x) 88 { 89 return 1UL << fls(x - 1); 90 } 91 92 struct hns3_adapter; 93 94 int hns3_dev_rss_hash_update(struct rte_eth_dev *dev, 95 struct rte_eth_rss_conf *rss_conf); 96 int hns3_dev_rss_hash_conf_get(struct rte_eth_dev *dev, 97 struct rte_eth_rss_conf *rss_conf); 98 int hns3_dev_rss_reta_update(struct rte_eth_dev *dev, 99 struct rte_eth_rss_reta_entry64 *reta_conf, 100 uint16_t reta_size); 101 int hns3_dev_rss_reta_query(struct rte_eth_dev *dev, 102 struct rte_eth_rss_reta_entry64 *reta_conf, 103 uint16_t reta_size); 104 void hns3_set_default_rss_args(struct hns3_hw *hw); 105 int hns3_set_rss_indir_table(struct hns3_hw *hw, uint8_t *indir, 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, 110 struct hns3_rss_tuple_cfg *tuple, 111 uint64_t rss_hf); 112 int hns3_set_rss_algo_key(struct hns3_hw *hw, uint8_t hash_algo, 113 const uint8_t *key); 114 #endif /* _HNS3_RSS_H_ */ 115