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