drivers/net/hns3/hns3_rss.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018-2021 HiSilicon Limited.
   3  */
   4
   5 #include <rte_ethdev.h>
   6 #include <rte_io.h>
   7 #include <rte_malloc.h>
   8
   9 #include "hns3_ethdev.h"
  10 #include "hns3_logs.h"
  11
  12 /*
  13  * The hash key used for rss initialization.
  14  */
  15 static const uint8_t hns3_hash_key[] = {
  16         0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2,
  17         0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0,
  18         0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4,
  19         0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C,
  20         0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA
  21 };
  22
  23 enum hns3_tuple_field {
  24         /* IPV4_TCP ENABLE FIELD */
  25         HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_D = 0,
  26         HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_S,
  27         HNS3_RSS_FIELD_IPV4_TCP_EN_IP_D,
  28         HNS3_RSS_FIELD_IPV4_TCP_EN_IP_S,
  29
  30         /* IPV4_UDP ENABLE FIELD */
  31         HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_D = 8,
  32         HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_S,
  33         HNS3_RSS_FIELD_IPV4_UDP_EN_IP_D,
  34         HNS3_RSS_FIELD_IPV4_UDP_EN_IP_S,
  35
  36         /* IPV4_SCTP ENABLE FIELD */
  37         HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_D = 16,
  38         HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_S,
  39         HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_D,
  40         HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_S,
  41         HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_VER,
  42
  43         /* IPV4 ENABLE FIELD */
  44         HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_D = 24,
  45         HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_S,
  46         HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_D,
  47         HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_S,
  48
  49         /* IPV6_TCP ENABLE FIELD */
  50         HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_D = 32,
  51         HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_S,
  52         HNS3_RSS_FIELD_IPV6_TCP_EN_IP_D,
  53         HNS3_RSS_FIELD_IPV6_TCP_EN_IP_S,
  54
  55         /* IPV6_UDP ENABLE FIELD */
  56         HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_D = 40,
  57         HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_S,
  58         HNS3_RSS_FIELD_IPV6_UDP_EN_IP_D,
  59         HNS3_RSS_FIELD_IPV6_UDP_EN_IP_S,
  60
  61         /* IPV6_SCTP ENABLE FIELD */
  62         HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_D = 48,
  63         HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_S,
  64         HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D,
  65         HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S,
  66         HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_VER,
  67
  68         /* IPV6 ENABLE FIELD */
  69         HNS3_RSS_FIELD_IPV6_NONFRAG_IP_D = 56,
  70         HNS3_RSS_FIELD_IPV6_NONFRAG_IP_S,
  71         HNS3_RSS_FIELD_IPV6_FRAG_IP_D,
  72         HNS3_RSS_FIELD_IPV6_FRAG_IP_S
  73 };
  74
  75 static const struct {
  76         uint64_t rss_types;
  77         uint64_t rss_field;
  78 } hns3_set_tuple_table[] = {
  79         { RTE_ETH_RSS_FRAG_IPV4 | RTE_ETH_RSS_L3_SRC_ONLY,
  80           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_S) },
  81         { RTE_ETH_RSS_FRAG_IPV4 | RTE_ETH_RSS_L3_DST_ONLY,
  82           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_D) },
  83         { RTE_ETH_RSS_NONFRAG_IPV4_TCP | RTE_ETH_RSS_L3_SRC_ONLY,
  84           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_S) },
  85         { RTE_ETH_RSS_NONFRAG_IPV4_TCP | RTE_ETH_RSS_L3_DST_ONLY,
  86           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_D) },
  87         { RTE_ETH_RSS_NONFRAG_IPV4_TCP | RTE_ETH_RSS_L4_SRC_ONLY,
  88           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_S) },
  89         { RTE_ETH_RSS_NONFRAG_IPV4_TCP | RTE_ETH_RSS_L4_DST_ONLY,
  90           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_D) },
  91         { RTE_ETH_RSS_NONFRAG_IPV4_UDP | RTE_ETH_RSS_L3_SRC_ONLY,
  92           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_S) },
  93         { RTE_ETH_RSS_NONFRAG_IPV4_UDP | RTE_ETH_RSS_L3_DST_ONLY,
  94           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_D) },
  95         { RTE_ETH_RSS_NONFRAG_IPV4_UDP | RTE_ETH_RSS_L4_SRC_ONLY,
  96           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_S) },
  97         { RTE_ETH_RSS_NONFRAG_IPV4_UDP | RTE_ETH_RSS_L4_DST_ONLY,
  98           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_D) },
  99         { RTE_ETH_RSS_NONFRAG_IPV4_SCTP | RTE_ETH_RSS_L3_SRC_ONLY,
 100           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_S) },
 101         { RTE_ETH_RSS_NONFRAG_IPV4_SCTP | RTE_ETH_RSS_L3_DST_ONLY,
 102           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_D) },
 103         { RTE_ETH_RSS_NONFRAG_IPV4_SCTP | RTE_ETH_RSS_L4_SRC_ONLY,
 104           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_S) },
 105         { RTE_ETH_RSS_NONFRAG_IPV4_SCTP | RTE_ETH_RSS_L4_DST_ONLY,
 106           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_D) },
 107         { RTE_ETH_RSS_NONFRAG_IPV4_OTHER | RTE_ETH_RSS_L3_SRC_ONLY,
 108           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_S) },
 109         { RTE_ETH_RSS_NONFRAG_IPV4_OTHER | RTE_ETH_RSS_L3_DST_ONLY,
 110           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_D) },
 111         { RTE_ETH_RSS_FRAG_IPV6 | RTE_ETH_RSS_L3_SRC_ONLY,
 112           BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_S) },
 113         { RTE_ETH_RSS_FRAG_IPV6 | RTE_ETH_RSS_L3_DST_ONLY,
 114           BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_D) },
 115         { RTE_ETH_RSS_NONFRAG_IPV6_TCP | RTE_ETH_RSS_L3_SRC_ONLY,
 116           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_S) },
 117         { RTE_ETH_RSS_NONFRAG_IPV6_TCP | RTE_ETH_RSS_L3_DST_ONLY,
 118           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_D) },
 119         { RTE_ETH_RSS_NONFRAG_IPV6_TCP | RTE_ETH_RSS_L4_SRC_ONLY,
 120           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_S) },
 121         { RTE_ETH_RSS_NONFRAG_IPV6_TCP | RTE_ETH_RSS_L4_DST_ONLY,
 122           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_D) },
 123         { RTE_ETH_RSS_NONFRAG_IPV6_UDP | RTE_ETH_RSS_L3_SRC_ONLY,
 124           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_S) },
 125         { RTE_ETH_RSS_NONFRAG_IPV6_UDP | RTE_ETH_RSS_L3_DST_ONLY,
 126           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_D) },
 127         { RTE_ETH_RSS_NONFRAG_IPV6_UDP | RTE_ETH_RSS_L4_SRC_ONLY,
 128           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_S) },
 129         { RTE_ETH_RSS_NONFRAG_IPV6_UDP | RTE_ETH_RSS_L4_DST_ONLY,
 130           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_D) },
 131         { RTE_ETH_RSS_NONFRAG_IPV6_SCTP | RTE_ETH_RSS_L3_SRC_ONLY,
 132           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S) },
 133         { RTE_ETH_RSS_NONFRAG_IPV6_SCTP | RTE_ETH_RSS_L3_DST_ONLY,
 134           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D) },
 135         { RTE_ETH_RSS_NONFRAG_IPV6_SCTP | RTE_ETH_RSS_L4_SRC_ONLY,
 136           BIT_ULL(HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_S) },
 137         { RTE_ETH_RSS_NONFRAG_IPV6_SCTP | RTE_ETH_RSS_L4_DST_ONLY,
 138           BIT_ULL(HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_D) },
 139         { RTE_ETH_RSS_NONFRAG_IPV6_OTHER | RTE_ETH_RSS_L3_SRC_ONLY,
 140           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_S) },
 141         { RTE_ETH_RSS_NONFRAG_IPV6_OTHER | RTE_ETH_RSS_L3_DST_ONLY,
 142           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_D) },
 143 };
 144
 145 static const struct {
 146         uint64_t rss_types;
 147         uint64_t rss_field;
 148 } hns3_set_rss_types[] = {
 149         { RTE_ETH_RSS_FRAG_IPV4, BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_D) |
 150           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_S) },
 151         { RTE_ETH_RSS_NONFRAG_IPV4_TCP, BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_S) |
 152           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_D) |
 153           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_S) |
 154           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_D) },
 155         { RTE_ETH_RSS_NONFRAG_IPV4_UDP, BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_S) |
 156           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_D) |
 157           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_S) |
 158           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_D) },
 159         { RTE_ETH_RSS_NONFRAG_IPV4_SCTP, BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_S) |
 160           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_D) |
 161           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_S) |
 162           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_D) |
 163           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_VER) },
 164         { RTE_ETH_RSS_NONFRAG_IPV4_OTHER,
 165           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_S) |
 166           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_D) },
 167         { RTE_ETH_RSS_FRAG_IPV6, BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_S) |
 168           BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_D) },
 169         { RTE_ETH_RSS_NONFRAG_IPV6_TCP, BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_S) |
 170           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_D) |
 171           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_S) |
 172           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_D) },
 173         { RTE_ETH_RSS_NONFRAG_IPV6_UDP, BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_S) |
 174           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_D) |
 175           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_S) |
 176           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_D) },
 177         { RTE_ETH_RSS_NONFRAG_IPV6_SCTP, BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S) |
 178           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D) |
 179           BIT_ULL(HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_D) |
 180           BIT_ULL(HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_S) |
 181           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_VER) },
 182         { RTE_ETH_RSS_NONFRAG_IPV6_OTHER,
 183           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_S) |
 184           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_D) }
 185 };
 186
 187 /*
 188  * rss_generic_config command function, opcode:0x0D01.
 189  * Used to set algorithm, key_offset and hash key of rss.
 190  */
 191 int
 192 hns3_rss_set_algo_key(struct hns3_hw *hw, const uint8_t *key)
 193 {
 194 #define HNS3_KEY_OFFSET_MAX     3
 195 #define HNS3_SET_HASH_KEY_BYTE_FOUR     2
 196
 197         struct hns3_rss_generic_config_cmd *req;
 198         struct hns3_cmd_desc desc;
 199         uint32_t key_offset, key_size;
 200         const uint8_t *key_cur;
 201         uint8_t cur_offset;
 202         int ret;
 203
 204         req = (struct hns3_rss_generic_config_cmd *)desc.data;
 205
 206         /*
 207          * key_offset=0, hash key byte0~15 is set to hardware.
 208          * key_offset=1, hash key byte16~31 is set to hardware.
 209          * key_offset=2, hash key byte32~39 is set to hardware.
 210          */
 211         for (key_offset = 0; key_offset < HNS3_KEY_OFFSET_MAX; key_offset++) {
 212                 hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_GENERIC_CONFIG,
 213                                           false);
 214
 215                 req->hash_config |=
 216                         (hw->rss_info.hash_algo & HNS3_RSS_HASH_ALGO_MASK);
 217                 req->hash_config |= (key_offset << HNS3_RSS_HASH_KEY_OFFSET_B);
 218
 219                 if (key_offset == HNS3_SET_HASH_KEY_BYTE_FOUR)
 220                         key_size = HNS3_RSS_KEY_SIZE - HNS3_RSS_HASH_KEY_NUM *
 221                         HNS3_SET_HASH_KEY_BYTE_FOUR;
 222                 else
 223                         key_size = HNS3_RSS_HASH_KEY_NUM;
 224
 225                 cur_offset = key_offset * HNS3_RSS_HASH_KEY_NUM;
 226                 key_cur = key + cur_offset;
 227                 memcpy(req->hash_key, key_cur, key_size);
 228
 229                 ret = hns3_cmd_send(hw, &desc, 1);
 230                 if (ret) {
 231                         hns3_err(hw, "Configure RSS algo key failed %d", ret);
 232                         return ret;
 233                 }
 234         }
 235         /* Update the shadow RSS key with user specified */
 236         memcpy(hw->rss_info.key, key, HNS3_RSS_KEY_SIZE);
 237         return 0;
 238 }
 239
 240 /*
 241  * Used to configure the tuple selection for RSS hash input.
 242  */
 243 static int
 244 hns3_rss_set_input_tuple(struct hns3_hw *hw)
 245 {
 246         struct hns3_rss_conf *rss_config = &hw->rss_info;
 247         struct hns3_rss_input_tuple_cmd *req;
 248         struct hns3_cmd_desc desc_tuple;
 249         int ret;
 250
 251         hns3_cmd_setup_basic_desc(&desc_tuple, HNS3_OPC_RSS_INPUT_TUPLE, false);
 252
 253         req = (struct hns3_rss_input_tuple_cmd *)desc_tuple.data;
 254
 255         req->tuple_field =
 256                 rte_cpu_to_le_64(rss_config->rss_tuple_sets.rss_tuple_fields);
 257
 258         ret = hns3_cmd_send(hw, &desc_tuple, 1);
 259         if (ret)
 260                 hns3_err(hw, "Configure RSS input tuple mode failed %d", ret);
 261
 262         return ret;
 263 }
 264
 265 /*
 266  * rss_indirection_table command function, opcode:0x0D07.
 267  * Used to configure the indirection table of rss.
 268  */
 269 int
 270 hns3_set_rss_indir_table(struct hns3_hw *hw, uint16_t *indir, uint16_t size)
 271 {
 272         struct hns3_rss_indirection_table_cmd *req;
 273         struct hns3_cmd_desc desc;
 274         uint8_t qid_msb_off;
 275         uint8_t qid_msb_val;
 276         uint16_t q_id;
 277         uint16_t i, j;
 278         int ret;
 279
 280         req = (struct hns3_rss_indirection_table_cmd *)desc.data;
 281
 282         for (i = 0; i < size / HNS3_RSS_CFG_TBL_SIZE; i++) {
 283                 hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INDIR_TABLE,
 284                                           false);
 285                 req->start_table_index =
 286                                 rte_cpu_to_le_16(i * HNS3_RSS_CFG_TBL_SIZE);
 287                 req->rss_set_bitmap = rte_cpu_to_le_16(HNS3_RSS_SET_BITMAP_MSK);
 288                 for (j = 0; j < HNS3_RSS_CFG_TBL_SIZE; j++) {
 289                         q_id = indir[i * HNS3_RSS_CFG_TBL_SIZE + j];
 290                         req->rss_result_l[j] = q_id & 0xff;
 291
 292                         qid_msb_off =
 293                                 j * HNS3_RSS_CFG_TBL_BW_H / HNS3_BITS_PER_BYTE;
 294                         qid_msb_val = (q_id >> HNS3_RSS_CFG_TBL_BW_L & 0x1)
 295                                         << (j * HNS3_RSS_CFG_TBL_BW_H %
 296                                         HNS3_BITS_PER_BYTE);
 297                         req->rss_result_h[qid_msb_off] |= qid_msb_val;
 298                 }
 299
 300                 ret = hns3_cmd_send(hw, &desc, 1);
 301                 if (ret) {
 302                         hns3_err(hw,
 303                                  "Sets RSS indirection table failed %d size %u",
 304                                  ret, size);
 305                         return ret;
 306                 }
 307         }
 308
 309         /* Update redirection table of hw */
 310         memcpy(hw->rss_info.rss_indirection_tbl, indir,
 311                sizeof(uint16_t) * size);
 312
 313         return 0;
 314 }
 315
 316 int
 317 hns3_rss_reset_indir_table(struct hns3_hw *hw)
 318 {
 319         uint16_t *lut;
 320         int ret;
 321
 322         lut = rte_zmalloc("hns3_rss_lut",
 323                           hw->rss_ind_tbl_size * sizeof(uint16_t), 0);
 324         if (lut == NULL) {
 325                 hns3_err(hw, "No hns3_rss_lut memory can be allocated");
 326                 return -ENOMEM;
 327         }
 328
 329         ret = hns3_set_rss_indir_table(hw, lut, hw->rss_ind_tbl_size);
 330         if (ret)
 331                 hns3_err(hw, "RSS uninit indir table failed: %d", ret);
 332         rte_free(lut);
 333
 334         return ret;
 335 }
 336
 337 int
 338 hns3_set_rss_tuple_by_rss_hf(struct hns3_hw *hw,
 339                              struct hns3_rss_tuple_cfg *tuple, uint64_t rss_hf)
 340 {
 341         struct hns3_rss_input_tuple_cmd *req;
 342         struct hns3_cmd_desc desc;
 343         uint32_t fields_count = 0; /* count times for setting tuple fields */
 344         uint32_t i;
 345         int ret;
 346
 347         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INPUT_TUPLE, false);
 348
 349         req = (struct hns3_rss_input_tuple_cmd *)desc.data;
 350
 351         for (i = 0; i < RTE_DIM(hns3_set_tuple_table); i++) {
 352                 if ((rss_hf & hns3_set_tuple_table[i].rss_types) ==
 353                      hns3_set_tuple_table[i].rss_types) {
 354                         req->tuple_field |=
 355                             rte_cpu_to_le_64(hns3_set_tuple_table[i].rss_field);
 356                         fields_count++;
 357                 }
 358         }
 359
 360         /*
 361          * When user does not specify the following types or a combination of
 362          * the following types, it enables all fields for the supported RSS
 363          * types. the following types as:
 364          * - RTE_ETH_RSS_L3_SRC_ONLY
 365          * - RTE_ETH_RSS_L3_DST_ONLY
 366          * - RTE_ETH_RSS_L4_SRC_ONLY
 367          * - RTE_ETH_RSS_L4_DST_ONLY
 368          */
 369         if (fields_count == 0) {
 370                 for (i = 0; i < RTE_DIM(hns3_set_rss_types); i++) {
 371                         if ((rss_hf & hns3_set_rss_types[i].rss_types) ==
 372                              hns3_set_rss_types[i].rss_types)
 373                                 req->tuple_field |= rte_cpu_to_le_64(
 374                                         hns3_set_rss_types[i].rss_field);
 375                 }
 376         }
 377
 378         ret = hns3_cmd_send(hw, &desc, 1);
 379         if (ret) {
 380                 hns3_err(hw, "Update RSS flow types tuples failed %d", ret);
 381                 return ret;
 382         }
 383
 384         tuple->rss_tuple_fields = rte_le_to_cpu_64(req->tuple_field);
 385
 386         return 0;
 387 }
 388
 389 /*
 390  * Configure RSS hash protocols and hash key.
 391  * @param dev
 392  *   Pointer to Ethernet device.
 393  * @praram rss_conf
 394  *   The configuration select of  rss key size and tuple flow_types.
 395  * @return
 396  *   0 on success, a negative errno value otherwise is set.
 397  */
 398 int
 399 hns3_dev_rss_hash_update(struct rte_eth_dev *dev,
 400                          struct rte_eth_rss_conf *rss_conf)
 401 {
 402         struct hns3_adapter *hns = dev->data->dev_private;
 403         struct hns3_hw *hw = &hns->hw;
 404         struct hns3_rss_tuple_cfg *tuple = &hw->rss_info.rss_tuple_sets;
 405         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 406         uint8_t key_len = rss_conf->rss_key_len;
 407         uint64_t rss_hf = rss_conf->rss_hf;
 408         uint8_t *key = rss_conf->rss_key;
 409         int ret;
 410
 411         if (hw->rss_dis_flag)
 412                 return -EINVAL;
 413
 414         rte_spinlock_lock(&hw->lock);
 415         ret = hns3_set_rss_tuple_by_rss_hf(hw, tuple, rss_hf);
 416         if (ret)
 417                 goto conf_err;
 418
 419         if (rss_cfg->conf.types && rss_hf == 0) {
 420                 /* Disable RSS, reset indirection table by local variable */
 421                 ret = hns3_rss_reset_indir_table(hw);
 422                 if (ret)
 423                         goto conf_err;
 424         } else if (rss_hf && rss_cfg->conf.types == 0) {
 425                 /* Enable RSS, restore indirection table by hw's config */
 426                 ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl,
 427                                                hw->rss_ind_tbl_size);
 428                 if (ret)
 429                         goto conf_err;
 430         }
 431
 432         /* Update supported flow types when set tuple success */
 433         rss_cfg->conf.types = rss_hf;
 434
 435         if (key) {
 436                 if (key_len != HNS3_RSS_KEY_SIZE) {
 437                         hns3_err(hw, "The hash key len(%u) is invalid",
 438                                  key_len);
 439                         ret = -EINVAL;
 440                         goto conf_err;
 441                 }
 442                 ret = hns3_rss_set_algo_key(hw, key);
 443                 if (ret)
 444                         goto conf_err;
 445         }
 446         rte_spinlock_unlock(&hw->lock);
 447
 448         return 0;
 449
 450 conf_err:
 451         rte_spinlock_unlock(&hw->lock);
 452         return ret;
 453 }
 454
 455 /*
 456  * Get rss key and rss_hf types set of RSS hash configuration.
 457  * @param dev
 458  *   Pointer to Ethernet device.
 459  * @praram rss_conf
 460  *   The buffer to get rss key size and tuple types.
 461  * @return
 462  *   0 on success.
 463  */
 464 int
 465 hns3_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 466                            struct rte_eth_rss_conf *rss_conf)
 467 {
 468         struct hns3_adapter *hns = dev->data->dev_private;
 469         struct hns3_hw *hw = &hns->hw;
 470         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 471
 472         rte_spinlock_lock(&hw->lock);
 473         rss_conf->rss_hf = rss_cfg->conf.types;
 474
 475         /* Get the RSS Key required by the user */
 476         if (rss_conf->rss_key && rss_conf->rss_key_len >= HNS3_RSS_KEY_SIZE) {
 477                 memcpy(rss_conf->rss_key, rss_cfg->key, HNS3_RSS_KEY_SIZE);
 478                 rss_conf->rss_key_len = HNS3_RSS_KEY_SIZE;
 479         }
 480         rte_spinlock_unlock(&hw->lock);
 481
 482         return 0;
 483 }
 484
 485 /*
 486  * Update rss redirection table of RSS.
 487  * @param dev
 488  *   Pointer to Ethernet device.
 489  * @praram reta_conf
 490  *   Pointer to the configuration select of mask and redirection tables.
 491  * @param reta_size
 492  *   Redirection table size.
 493  * @return
 494  *   0 on success, a negative errno value otherwise is set.
 495  */
 496 int
 497 hns3_dev_rss_reta_update(struct rte_eth_dev *dev,
 498                          struct rte_eth_rss_reta_entry64 *reta_conf,
 499                          uint16_t reta_size)
 500 {
 501         struct hns3_adapter *hns = dev->data->dev_private;
 502         struct hns3_hw *hw = &hns->hw;
 503         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 504         uint16_t indirection_tbl[HNS3_RSS_IND_TBL_SIZE_MAX];
 505         uint16_t idx, shift;
 506         uint16_t i;
 507         int ret;
 508
 509         if (reta_size != hw->rss_ind_tbl_size) {
 510                 hns3_err(hw, "The size of hash lookup table configured (%u)"
 511                          "doesn't match the number hardware can supported"
 512                          "(%u)", reta_size, hw->rss_ind_tbl_size);
 513                 return -EINVAL;
 514         }
 515         rte_spinlock_lock(&hw->lock);
 516         memcpy(indirection_tbl, rss_cfg->rss_indirection_tbl,
 517                sizeof(rss_cfg->rss_indirection_tbl));
 518         for (i = 0; i < reta_size; i++) {
 519                 idx = i / RTE_ETH_RETA_GROUP_SIZE;
 520                 shift = i % RTE_ETH_RETA_GROUP_SIZE;
 521                 if (reta_conf[idx].reta[shift] >= hw->alloc_rss_size) {
 522                         rte_spinlock_unlock(&hw->lock);
 523                         hns3_err(hw, "queue id(%u) set to redirection table "
 524                                  "exceeds queue number(%u) allocated to a TC",
 525                                  reta_conf[idx].reta[shift],
 526                                  hw->alloc_rss_size);
 527                         return -EINVAL;
 528                 }
 529
 530                 if (reta_conf[idx].mask & (1ULL << shift))
 531                         indirection_tbl[i] = reta_conf[idx].reta[shift];
 532         }
 533
 534         ret = hns3_set_rss_indir_table(hw, indirection_tbl,
 535                                        hw->rss_ind_tbl_size);
 536
 537         rte_spinlock_unlock(&hw->lock);
 538         return ret;
 539 }
 540
 541 /*
 542  * Get rss redirection table of RSS hash configuration.
 543  * @param dev
 544  *   Pointer to Ethernet device.
 545  * @praram reta_conf
 546  *   Pointer to the configuration select of mask and redirection tables.
 547  * @param reta_size
 548  *   Redirection table size.
 549  * @return
 550  *   0 on success, a negative errno value otherwise is set.
 551  */
 552 int
 553 hns3_dev_rss_reta_query(struct rte_eth_dev *dev,
 554                         struct rte_eth_rss_reta_entry64 *reta_conf,
 555                         uint16_t reta_size)
 556 {
 557         struct hns3_adapter *hns = dev->data->dev_private;
 558         struct hns3_hw *hw = &hns->hw;
 559         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 560         uint16_t idx, shift;
 561         uint16_t i;
 562
 563         if (reta_size != hw->rss_ind_tbl_size) {
 564                 hns3_err(hw, "The size of hash lookup table configured (%u)"
 565                          " doesn't match the number hardware can supported"
 566                          "(%u)", reta_size, hw->rss_ind_tbl_size);
 567                 return -EINVAL;
 568         }
 569         rte_spinlock_lock(&hw->lock);
 570         for (i = 0; i < reta_size; i++) {
 571                 idx = i / RTE_ETH_RETA_GROUP_SIZE;
 572                 shift = i % RTE_ETH_RETA_GROUP_SIZE;
 573                 if (reta_conf[idx].mask & (1ULL << shift))
 574                         reta_conf[idx].reta[shift] =
 575                                                 rss_cfg->rss_indirection_tbl[i];
 576         }
 577         rte_spinlock_unlock(&hw->lock);
 578         return 0;
 579 }
 580
 581 static void
 582 hns3_set_rss_tc_mode_entry(struct hns3_hw *hw, uint8_t *tc_valid,
 583                            uint16_t *tc_size, uint16_t *tc_offset,
 584                            uint8_t tc_num)
 585 {
 586         struct hns3_adapter *hns = HNS3_DEV_HW_TO_ADAPTER(hw);
 587         uint16_t rss_size = hw->alloc_rss_size;
 588         uint16_t roundup_size;
 589         uint16_t i;
 590
 591         roundup_size = roundup_pow_of_two(rss_size);
 592         roundup_size = ilog2(roundup_size);
 593
 594         for (i = 0; i < tc_num; i++) {
 595                 if (hns->is_vf) {
 596                         /*
 597                          * For packets with VLAN priorities destined for the VF,
 598                          * hardware still assign Rx queue based on the Up-to-TC
 599                          * mapping PF configured. But VF has only one TC. If
 600                          * other TC don't enable, it causes that the priority
 601                          * packets that aren't destined for TC0 aren't received
 602                          * by RSS hash but is destined for queue 0. So driver
 603                          * has to enable the unused TC by using TC0 queue
 604                          * mapping configuration.
 605                          */
 606                         tc_valid[i] = (hw->hw_tc_map & BIT(i)) ?
 607                                         !!(hw->hw_tc_map & BIT(i)) : 1;
 608                         tc_size[i] = roundup_size;
 609                         tc_offset[i] = (hw->hw_tc_map & BIT(i)) ?
 610                                         rss_size * i : 0;
 611                 } else {
 612                         tc_valid[i] = !!(hw->hw_tc_map & BIT(i));
 613                         tc_size[i] = tc_valid[i] ? roundup_size : 0;
 614                         tc_offset[i] = tc_valid[i] ? rss_size * i : 0;
 615                 }
 616         }
 617 }
 618
 619 static int
 620 hns3_set_rss_tc_mode(struct hns3_hw *hw)
 621 {
 622         struct hns3_rss_tc_mode_cmd *req;
 623         uint16_t tc_offset[HNS3_MAX_TC_NUM];
 624         uint8_t tc_valid[HNS3_MAX_TC_NUM];
 625         uint16_t tc_size[HNS3_MAX_TC_NUM];
 626         struct hns3_cmd_desc desc;
 627         uint16_t i;
 628         int ret;
 629
 630         hns3_set_rss_tc_mode_entry(hw, tc_valid, tc_size,
 631                                    tc_offset, HNS3_MAX_TC_NUM);
 632
 633         req = (struct hns3_rss_tc_mode_cmd *)desc.data;
 634         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_TC_MODE, false);
 635         for (i = 0; i < HNS3_MAX_TC_NUM; i++) {
 636                 uint16_t mode = 0;
 637
 638                 hns3_set_bit(mode, HNS3_RSS_TC_VALID_B, (tc_valid[i] & 0x1));
 639                 hns3_set_field(mode, HNS3_RSS_TC_SIZE_M, HNS3_RSS_TC_SIZE_S,
 640                                tc_size[i]);
 641                 if (tc_size[i] >> HNS3_RSS_TC_SIZE_MSB_OFFSET > 0)
 642                         hns3_set_bit(mode, HNS3_RSS_TC_SIZE_MSB_S, 1);
 643                 hns3_set_field(mode, HNS3_RSS_TC_OFFSET_M, HNS3_RSS_TC_OFFSET_S,
 644                                tc_offset[i]);
 645
 646                 req->rss_tc_mode[i] = rte_cpu_to_le_16(mode);
 647         }
 648         ret = hns3_cmd_send(hw, &desc, 1);
 649         if (ret)
 650                 hns3_err(hw, "Sets rss tc mode failed %d", ret);
 651
 652         return ret;
 653 }
 654
 655 static void
 656 hns3_rss_tuple_uninit(struct hns3_hw *hw)
 657 {
 658         struct hns3_cmd_desc desc;
 659         int ret;
 660
 661         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INPUT_TUPLE, false);
 662
 663         ret = hns3_cmd_send(hw, &desc, 1);
 664         if (ret) {
 665                 hns3_err(hw, "RSS uninit tuple failed %d", ret);
 666                 return;
 667         }
 668 }
 669
 670 /*
 671  * Set the default rss configuration in the init of driver.
 672  */
 673 void
 674 hns3_rss_set_default_args(struct hns3_hw *hw)
 675 {
 676         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 677         uint16_t queue_num = hw->alloc_rss_size;
 678         int i;
 679
 680         /* Default hash algorithm */
 681         rss_cfg->conf.func = RTE_ETH_HASH_FUNCTION_TOEPLITZ;
 682
 683         /* Default RSS key */
 684         memcpy(rss_cfg->key, hns3_hash_key, HNS3_RSS_KEY_SIZE);
 685
 686         /* Initialize RSS indirection table */
 687         for (i = 0; i < hw->rss_ind_tbl_size; i++)
 688                 rss_cfg->rss_indirection_tbl[i] = i % queue_num;
 689 }
 690
 691 /*
 692  * RSS initialization for hns3 PMD.
 693  */
 694 int
 695 hns3_config_rss(struct hns3_adapter *hns)
 696 {
 697         struct hns3_hw *hw = &hns->hw;
 698         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 699         uint8_t *hash_key = rss_cfg->key;
 700         int ret, ret1;
 701
 702         enum rte_eth_rx_mq_mode mq_mode = hw->data->dev_conf.rxmode.mq_mode;
 703
 704         switch (hw->rss_info.conf.func) {
 705         case RTE_ETH_HASH_FUNCTION_SIMPLE_XOR:
 706                 hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_SIMPLE;
 707                 break;
 708         case RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ:
 709                 hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_SYMMETRIC_TOEP;
 710                 break;
 711         default:
 712                 hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_TOEPLITZ;
 713                 break;
 714         }
 715
 716         /* When RSS is off, redirect the packet queue 0 */
 717         if (((uint32_t)mq_mode & RTE_ETH_MQ_RX_RSS_FLAG) == 0)
 718                 hns3_rss_uninit(hns);
 719
 720         /* Configure RSS hash algorithm and hash key offset */
 721         ret = hns3_rss_set_algo_key(hw, hash_key);
 722         if (ret)
 723                 return ret;
 724
 725         /* Configure the tuple selection for RSS hash input */
 726         ret = hns3_rss_set_input_tuple(hw);
 727         if (ret)
 728                 return ret;
 729
 730         /*
 731          * When RSS is off, it doesn't need to configure rss redirection table
 732          * to hardware.
 733          */
 734         if (((uint32_t)mq_mode & RTE_ETH_MQ_RX_RSS_FLAG)) {
 735                 ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl,
 736                                                hw->rss_ind_tbl_size);
 737                 if (ret)
 738                         goto rss_tuple_uninit;
 739         }
 740
 741         ret = hns3_set_rss_tc_mode(hw);
 742         if (ret)
 743                 goto rss_indir_table_uninit;
 744
 745         return ret;
 746
 747 rss_indir_table_uninit:
 748         if (((uint32_t)mq_mode & RTE_ETH_MQ_RX_RSS_FLAG)) {
 749                 ret1 = hns3_rss_reset_indir_table(hw);
 750                 if (ret1 != 0)
 751                         return ret;
 752         }
 753
 754 rss_tuple_uninit:
 755         hns3_rss_tuple_uninit(hw);
 756
 757         /* Disable RSS */
 758         hw->rss_info.conf.types = 0;
 759
 760         return ret;
 761 }
 762
 763 /*
 764  * RSS uninitialization for hns3 PMD.
 765  */
 766 void
 767 hns3_rss_uninit(struct hns3_adapter *hns)
 768 {
 769         struct hns3_hw *hw = &hns->hw;
 770         int ret;
 771
 772         hns3_rss_tuple_uninit(hw);
 773         ret = hns3_rss_reset_indir_table(hw);
 774         if (ret != 0)
 775                 return;
 776
 777         /* Disable RSS */
 778         hw->rss_info.conf.types = 0;
 779 }