drivers/net/hns3/hns3_rss.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2018-2019 Hisilicon Limited.
   3  */
   4
   5 #include <stdbool.h>
   6 #include <rte_ethdev.h>
   7 #include <rte_io.h>
   8 #include <rte_malloc.h>
   9 #include <rte_memcpy.h>
  10 #include <rte_spinlock.h>
  11
  12 #include "hns3_ethdev.h"
  13 #include "hns3_logs.h"
  14
  15 /*
  16  * The hash key used for rss initialization.
  17  */
  18 static const uint8_t hns3_hash_key[] = {
  19         0x6D, 0x5A, 0x56, 0xDA, 0x25, 0x5B, 0x0E, 0xC2,
  20         0x41, 0x67, 0x25, 0x3D, 0x43, 0xA3, 0x8F, 0xB0,
  21         0xD0, 0xCA, 0x2B, 0xCB, 0xAE, 0x7B, 0x30, 0xB4,
  22         0x77, 0xCB, 0x2D, 0xA3, 0x80, 0x30, 0xF2, 0x0C,
  23         0x6A, 0x42, 0xB7, 0x3B, 0xBE, 0xAC, 0x01, 0xFA
  24 };
  25
  26 enum hns3_tuple_field {
  27         /* IPV4_TCP ENABLE FIELD */
  28         HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_D = 0,
  29         HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_S,
  30         HNS3_RSS_FIELD_IPV4_TCP_EN_IP_D,
  31         HNS3_RSS_FIELD_IPV4_TCP_EN_IP_S,
  32
  33         /* IPV4_UDP ENABLE FIELD */
  34         HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_D = 8,
  35         HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_S,
  36         HNS3_RSS_FIELD_IPV4_UDP_EN_IP_D,
  37         HNS3_RSS_FIELD_IPV4_UDP_EN_IP_S,
  38
  39         /* IPV4_SCTP ENABLE FIELD */
  40         HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_D = 16,
  41         HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_S,
  42         HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_D,
  43         HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_S,
  44         HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_VER,
  45
  46         /* IPV4 ENABLE FIELD */
  47         HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_D = 24,
  48         HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_S,
  49         HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_D,
  50         HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_S,
  51
  52         /* IPV6_TCP ENABLE FIELD */
  53         HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_D = 32,
  54         HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_S,
  55         HNS3_RSS_FIELD_IPV6_TCP_EN_IP_D,
  56         HNS3_RSS_FIELD_IPV6_TCP_EN_IP_S,
  57
  58         /* IPV6_UDP ENABLE FIELD */
  59         HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_D = 40,
  60         HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_S,
  61         HNS3_RSS_FIELD_IPV6_UDP_EN_IP_D,
  62         HNS3_RSS_FIELD_IPV6_UDP_EN_IP_S,
  63
  64         /* IPV6_SCTP ENABLE FIELD */
  65         HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_D = 48,
  66         HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_S,
  67         HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D,
  68         HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S,
  69         HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_VER,
  70
  71         /* IPV6 ENABLE FIELD */
  72         HNS3_RSS_FIELD_IPV6_NONFRAG_IP_D = 56,
  73         HNS3_RSS_FIELD_IPV6_NONFRAG_IP_S,
  74         HNS3_RSS_FIELD_IPV6_FRAG_IP_D,
  75         HNS3_RSS_FIELD_IPV6_FRAG_IP_S
  76 };
  77
  78 static const struct {
  79         uint64_t rss_types;
  80         uint64_t rss_field;
  81 } hns3_set_tuple_table[] = {
  82         { ETH_RSS_FRAG_IPV4 | ETH_RSS_L3_SRC_ONLY,
  83           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_S) },
  84         { ETH_RSS_FRAG_IPV4 | ETH_RSS_L3_DST_ONLY,
  85           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_D) },
  86         { ETH_RSS_NONFRAG_IPV4_TCP | ETH_RSS_L3_SRC_ONLY,
  87           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_S) },
  88         { ETH_RSS_NONFRAG_IPV4_TCP | ETH_RSS_L3_DST_ONLY,
  89           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_D) },
  90         { ETH_RSS_NONFRAG_IPV4_TCP | ETH_RSS_L4_SRC_ONLY,
  91           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_S) },
  92         { ETH_RSS_NONFRAG_IPV4_TCP | ETH_RSS_L4_DST_ONLY,
  93           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_D) },
  94         { ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_L3_SRC_ONLY,
  95           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_S) },
  96         { ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_L3_DST_ONLY,
  97           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_D) },
  98         { ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_L4_SRC_ONLY,
  99           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_S) },
 100         { ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_L4_DST_ONLY,
 101           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_D) },
 102         { ETH_RSS_NONFRAG_IPV4_SCTP | ETH_RSS_L3_SRC_ONLY,
 103           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_S) },
 104         { ETH_RSS_NONFRAG_IPV4_SCTP | ETH_RSS_L3_DST_ONLY,
 105           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_D) },
 106         { ETH_RSS_NONFRAG_IPV4_SCTP | ETH_RSS_L4_SRC_ONLY,
 107           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_S) },
 108         { ETH_RSS_NONFRAG_IPV4_SCTP | ETH_RSS_L4_DST_ONLY,
 109           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_D) },
 110         { ETH_RSS_NONFRAG_IPV4_OTHER | ETH_RSS_L3_SRC_ONLY,
 111           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_S) },
 112         { ETH_RSS_NONFRAG_IPV4_OTHER | ETH_RSS_L3_DST_ONLY,
 113           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_D) },
 114         { ETH_RSS_FRAG_IPV6 | ETH_RSS_L3_SRC_ONLY,
 115           BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_S) },
 116         { ETH_RSS_FRAG_IPV6 | ETH_RSS_L3_DST_ONLY,
 117           BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_D) },
 118         { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_L3_SRC_ONLY,
 119           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_S) },
 120         { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_L3_DST_ONLY,
 121           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_D) },
 122         { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_L4_SRC_ONLY,
 123           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_S) },
 124         { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_L4_DST_ONLY,
 125           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_D) },
 126         { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_L3_SRC_ONLY,
 127           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_S) },
 128         { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_L3_DST_ONLY,
 129           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_D) },
 130         { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_L4_SRC_ONLY,
 131           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_S) },
 132         { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_L4_DST_ONLY,
 133           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_D) },
 134         { ETH_RSS_NONFRAG_IPV6_SCTP | ETH_RSS_L3_SRC_ONLY,
 135           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S) },
 136         { ETH_RSS_NONFRAG_IPV6_SCTP | ETH_RSS_L3_DST_ONLY,
 137           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D) },
 138         { ETH_RSS_NONFRAG_IPV6_SCTP | ETH_RSS_L4_SRC_ONLY,
 139           BIT_ULL(HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_S) },
 140         { ETH_RSS_NONFRAG_IPV6_SCTP | ETH_RSS_L4_DST_ONLY,
 141           BIT_ULL(HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_D) },
 142         { ETH_RSS_NONFRAG_IPV6_OTHER | ETH_RSS_L3_SRC_ONLY,
 143           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_S) },
 144         { ETH_RSS_NONFRAG_IPV6_OTHER | ETH_RSS_L3_DST_ONLY,
 145           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_D) },
 146 };
 147
 148 static const struct {
 149         uint64_t rss_types;
 150         uint64_t rss_field;
 151 } hns3_set_rss_types[] = {
 152         { ETH_RSS_FRAG_IPV4, BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_D) |
 153           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_S) },
 154         { ETH_RSS_NONFRAG_IPV4_TCP, BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_S) |
 155           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_D) |
 156           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_S) |
 157           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_D) },
 158         { ETH_RSS_NONFRAG_IPV4_TCP, BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_S) |
 159           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_D) |
 160           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_S) |
 161           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_D) },
 162         { ETH_RSS_NONFRAG_IPV4_UDP, BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_S) |
 163           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_D) |
 164           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_S) |
 165           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_D) },
 166         { ETH_RSS_NONFRAG_IPV4_SCTP, BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_S) |
 167           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_D) |
 168           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_S) |
 169           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_D) |
 170           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_VER) },
 171         { ETH_RSS_NONFRAG_IPV4_OTHER,
 172           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_S) |
 173           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_D) },
 174         { ETH_RSS_FRAG_IPV6, BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_S) |
 175           BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_D) },
 176         { ETH_RSS_NONFRAG_IPV6_TCP, BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_S) |
 177           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_D) |
 178           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_S) |
 179           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_D) },
 180         { ETH_RSS_NONFRAG_IPV6_UDP, BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_S) |
 181           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_D) |
 182           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_S) |
 183           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_D) },
 184         { ETH_RSS_NONFRAG_IPV6_SCTP, BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S) |
 185           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D) |
 186           BIT_ULL(HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_D) |
 187           BIT_ULL(HNS3_RSS_FILED_IPV6_SCTP_EN_SCTP_S) |
 188           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_VER) },
 189         { ETH_RSS_NONFRAG_IPV6_OTHER,
 190           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_S) |
 191           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_D) }
 192 };
 193
 194 /*
 195  * rss_generic_config command function, opcode:0x0D01.
 196  * Used to set algorithm, key_offset and hash key of rss.
 197  */
 198 int
 199 hns3_set_rss_algo_key(struct hns3_hw *hw, const uint8_t *key)
 200 {
 201 #define HNS3_KEY_OFFSET_MAX     3
 202 #define HNS3_SET_HASH_KEY_BYTE_FOUR     2
 203
 204         struct hns3_rss_generic_config_cmd *req;
 205         struct hns3_cmd_desc desc;
 206         uint32_t key_offset, key_size;
 207         const uint8_t *key_cur;
 208         uint8_t cur_offset;
 209         int ret;
 210
 211         req = (struct hns3_rss_generic_config_cmd *)desc.data;
 212
 213         /*
 214          * key_offset=0, hash key byte0~15 is set to hardware.
 215          * key_offset=1, hash key byte16~31 is set to hardware.
 216          * key_offset=2, hash key byte32~39 is set to hardware.
 217          */
 218         for (key_offset = 0; key_offset < HNS3_KEY_OFFSET_MAX; key_offset++) {
 219                 hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_GENERIC_CONFIG,
 220                                           false);
 221
 222                 req->hash_config |=
 223                         (hw->rss_info.hash_algo & HNS3_RSS_HASH_ALGO_MASK);
 224                 req->hash_config |= (key_offset << HNS3_RSS_HASH_KEY_OFFSET_B);
 225
 226                 if (key_offset == HNS3_SET_HASH_KEY_BYTE_FOUR)
 227                         key_size = HNS3_RSS_KEY_SIZE - HNS3_RSS_HASH_KEY_NUM *
 228                         HNS3_SET_HASH_KEY_BYTE_FOUR;
 229                 else
 230                         key_size = HNS3_RSS_HASH_KEY_NUM;
 231
 232                 cur_offset = key_offset * HNS3_RSS_HASH_KEY_NUM;
 233                 key_cur = key + cur_offset;
 234                 memcpy(req->hash_key, key_cur, key_size);
 235
 236                 ret = hns3_cmd_send(hw, &desc, 1);
 237                 if (ret) {
 238                         hns3_err(hw, "Configure RSS algo key failed %d", ret);
 239                         return ret;
 240                 }
 241         }
 242         /* Update the shadow RSS key with user specified */
 243         memcpy(hw->rss_info.key, key, HNS3_RSS_KEY_SIZE);
 244         return 0;
 245 }
 246
 247 /*
 248  * Used to configure the tuple selection for RSS hash input.
 249  */
 250 static int
 251 hns3_set_rss_input_tuple(struct hns3_hw *hw)
 252 {
 253         struct hns3_rss_conf *rss_config = &hw->rss_info;
 254         struct hns3_rss_input_tuple_cmd *req;
 255         struct hns3_cmd_desc desc_tuple;
 256         int ret;
 257
 258         hns3_cmd_setup_basic_desc(&desc_tuple, HNS3_OPC_RSS_INPUT_TUPLE, false);
 259
 260         req = (struct hns3_rss_input_tuple_cmd *)desc_tuple.data;
 261
 262         req->tuple_field =
 263                 rte_cpu_to_le_64(rss_config->rss_tuple_sets.rss_tuple_fields);
 264
 265         ret = hns3_cmd_send(hw, &desc_tuple, 1);
 266         if (ret)
 267                 hns3_err(hw, "Configure RSS input tuple mode failed %d", ret);
 268
 269         return ret;
 270 }
 271
 272 /*
 273  * rss_indirection_table command function, opcode:0x0D07.
 274  * Used to configure the indirection table of rss.
 275  */
 276 int
 277 hns3_set_rss_indir_table(struct hns3_hw *hw, uint16_t *indir, uint16_t size)
 278 {
 279         struct hns3_rss_indirection_table_cmd *req;
 280         struct hns3_cmd_desc desc;
 281         uint8_t qid_msb_off;
 282         uint8_t qid_msb_val;
 283         uint16_t q_id;
 284         uint16_t i, j;
 285         int ret;
 286
 287         req = (struct hns3_rss_indirection_table_cmd *)desc.data;
 288
 289         for (i = 0; i < size / HNS3_RSS_CFG_TBL_SIZE; i++) {
 290                 hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INDIR_TABLE,
 291                                           false);
 292                 req->start_table_index =
 293                                 rte_cpu_to_le_16(i * HNS3_RSS_CFG_TBL_SIZE);
 294                 req->rss_set_bitmap = rte_cpu_to_le_16(HNS3_RSS_SET_BITMAP_MSK);
 295                 for (j = 0; j < HNS3_RSS_CFG_TBL_SIZE; j++) {
 296                         q_id = indir[i * HNS3_RSS_CFG_TBL_SIZE + j];
 297                         req->rss_result_l[j] = q_id & 0xff;
 298
 299                         qid_msb_off =
 300                                 j * HNS3_RSS_CFG_TBL_BW_H / HNS3_BITS_PER_BYTE;
 301                         qid_msb_val = (q_id >> HNS3_RSS_CFG_TBL_BW_L & 0x1)
 302                                         << (j * HNS3_RSS_CFG_TBL_BW_H %
 303                                         HNS3_BITS_PER_BYTE);
 304                         req->rss_result_h[qid_msb_off] |= qid_msb_val;
 305                 }
 306
 307                 ret = hns3_cmd_send(hw, &desc, 1);
 308                 if (ret) {
 309                         hns3_err(hw,
 310                                  "Sets RSS indirection table failed %d size %u",
 311                                  ret, size);
 312                         return ret;
 313                 }
 314         }
 315
 316         /* Update redirection table of hw */
 317         memcpy(hw->rss_info.rss_indirection_tbl, indir,
 318                sizeof(hw->rss_info.rss_indirection_tbl));
 319
 320         return 0;
 321 }
 322
 323 int
 324 hns3_rss_reset_indir_table(struct hns3_hw *hw)
 325 {
 326         uint16_t *lut;
 327         int ret;
 328
 329         lut = rte_zmalloc("hns3_rss_lut",
 330                           HNS3_RSS_IND_TBL_SIZE * sizeof(uint16_t), 0);
 331         if (lut == NULL) {
 332                 hns3_err(hw, "No hns3_rss_lut memory can be allocated");
 333                 return -ENOMEM;
 334         }
 335
 336         ret = hns3_set_rss_indir_table(hw, lut, HNS3_RSS_IND_TBL_SIZE);
 337         if (ret)
 338                 hns3_err(hw, "RSS uninit indir table failed: %d", ret);
 339         rte_free(lut);
 340
 341         return ret;
 342 }
 343
 344 int
 345 hns3_set_rss_tuple_by_rss_hf(struct hns3_hw *hw,
 346                              struct hns3_rss_tuple_cfg *tuple, uint64_t rss_hf)
 347 {
 348         struct hns3_rss_input_tuple_cmd *req;
 349         struct hns3_cmd_desc desc;
 350         uint32_t fields_count = 0; /* count times for setting tuple fields */
 351         uint32_t i;
 352         int ret;
 353
 354         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INPUT_TUPLE, false);
 355
 356         req = (struct hns3_rss_input_tuple_cmd *)desc.data;
 357
 358         for (i = 0; i < RTE_DIM(hns3_set_tuple_table); i++) {
 359                 if ((rss_hf & hns3_set_tuple_table[i].rss_types) ==
 360                      hns3_set_tuple_table[i].rss_types) {
 361                         req->tuple_field |=
 362                             rte_cpu_to_le_64(hns3_set_tuple_table[i].rss_field);
 363                         fields_count++;
 364                 }
 365         }
 366
 367         /*
 368          * When user does not specify the following types or a combination of
 369          * the following types, it enables all fields for the supported RSS
 370          * types. the following types as:
 371          * - ETH_RSS_L3_SRC_ONLY
 372          * - ETH_RSS_L3_DST_ONLY
 373          * - ETH_RSS_L4_SRC_ONLY
 374          * - ETH_RSS_L4_DST_ONLY
 375          */
 376         if (fields_count == 0) {
 377                 for (i = 0; i < RTE_DIM(hns3_set_rss_types); i++) {
 378                         if ((rss_hf & hns3_set_rss_types[i].rss_types) ==
 379                              hns3_set_rss_types[i].rss_types)
 380                                 req->tuple_field |= rte_cpu_to_le_64(
 381                                         hns3_set_rss_types[i].rss_field);
 382                 }
 383         }
 384
 385         ret = hns3_cmd_send(hw, &desc, 1);
 386         if (ret) {
 387                 hns3_err(hw, "Update RSS flow types tuples failed %d", ret);
 388                 return ret;
 389         }
 390
 391         tuple->rss_tuple_fields = rte_le_to_cpu_64(req->tuple_field);
 392
 393         return 0;
 394 }
 395
 396 /*
 397  * Configure RSS hash protocols and hash key.
 398  * @param dev
 399  *   Pointer to Ethernet device.
 400  * @praram rss_conf
 401  *   The configuration select of  rss key size and tuple flow_types.
 402  * @return
 403  *   0 on success, a negative errno value otherwise is set.
 404  */
 405 int
 406 hns3_dev_rss_hash_update(struct rte_eth_dev *dev,
 407                          struct rte_eth_rss_conf *rss_conf)
 408 {
 409         struct hns3_adapter *hns = dev->data->dev_private;
 410         struct hns3_hw *hw = &hns->hw;
 411         struct hns3_rss_tuple_cfg *tuple = &hw->rss_info.rss_tuple_sets;
 412         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 413         uint8_t key_len = rss_conf->rss_key_len;
 414         uint64_t rss_hf = rss_conf->rss_hf;
 415         uint8_t *key = rss_conf->rss_key;
 416         int ret;
 417
 418         if (hw->rss_dis_flag)
 419                 return -EINVAL;
 420
 421         rte_spinlock_lock(&hw->lock);
 422         ret = hns3_set_rss_tuple_by_rss_hf(hw, tuple, rss_hf);
 423         if (ret)
 424                 goto conf_err;
 425
 426         if (rss_cfg->conf.types && rss_hf == 0) {
 427                 /* Disable RSS, reset indirection table by local variable */
 428                 ret = hns3_rss_reset_indir_table(hw);
 429                 if (ret)
 430                         goto conf_err;
 431         } else if (rss_hf && rss_cfg->conf.types == 0) {
 432                 /* Enable RSS, restore indirection table by hw's config */
 433                 ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl,
 434                                                HNS3_RSS_IND_TBL_SIZE);
 435                 if (ret)
 436                         goto conf_err;
 437         }
 438
 439         /* Update supported flow types when set tuple success */
 440         rss_cfg->conf.types = rss_hf;
 441
 442         if (key) {
 443                 if (key_len != HNS3_RSS_KEY_SIZE) {
 444                         hns3_err(hw, "The hash key len(%u) is invalid",
 445                                  key_len);
 446                         ret = -EINVAL;
 447                         goto conf_err;
 448                 }
 449                 ret = hns3_set_rss_algo_key(hw, key);
 450                 if (ret)
 451                         goto conf_err;
 452         }
 453         rte_spinlock_unlock(&hw->lock);
 454
 455         return 0;
 456
 457 conf_err:
 458         rte_spinlock_unlock(&hw->lock);
 459         return ret;
 460 }
 461
 462 /*
 463  * Get rss key and rss_hf types set of RSS hash configuration.
 464  * @param dev
 465  *   Pointer to Ethernet device.
 466  * @praram rss_conf
 467  *   The buffer to get rss key size and tuple types.
 468  * @return
 469  *   0 on success.
 470  */
 471 int
 472 hns3_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 473                            struct rte_eth_rss_conf *rss_conf)
 474 {
 475         struct hns3_adapter *hns = dev->data->dev_private;
 476         struct hns3_hw *hw = &hns->hw;
 477         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 478
 479         rte_spinlock_lock(&hw->lock);
 480         rss_conf->rss_hf = rss_cfg->conf.types;
 481
 482         /* Get the RSS Key required by the user */
 483         if (rss_conf->rss_key && rss_conf->rss_key_len >= HNS3_RSS_KEY_SIZE) {
 484                 memcpy(rss_conf->rss_key, rss_cfg->key, HNS3_RSS_KEY_SIZE);
 485                 rss_conf->rss_key_len = HNS3_RSS_KEY_SIZE;
 486         }
 487         rte_spinlock_unlock(&hw->lock);
 488
 489         return 0;
 490 }
 491
 492 /*
 493  * Update rss redirection table of RSS.
 494  * @param dev
 495  *   Pointer to Ethernet device.
 496  * @praram reta_conf
 497  *   Pointer to the configuration select of mask and redirection tables.
 498  * @param reta_size
 499  *   Redirection table size.
 500  * @return
 501  *   0 on success, a negative errno value otherwise is set.
 502  */
 503 int
 504 hns3_dev_rss_reta_update(struct rte_eth_dev *dev,
 505                          struct rte_eth_rss_reta_entry64 *reta_conf,
 506                          uint16_t reta_size)
 507 {
 508         struct hns3_adapter *hns = dev->data->dev_private;
 509         struct hns3_hw *hw = &hns->hw;
 510         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 511         uint16_t i, indir_size = HNS3_RSS_IND_TBL_SIZE; /* Table size is 512 */
 512         uint16_t indirection_tbl[HNS3_RSS_IND_TBL_SIZE];
 513         uint16_t idx, shift;
 514         int ret;
 515
 516         if (reta_size != indir_size || reta_size > ETH_RSS_RETA_SIZE_512) {
 517                 hns3_err(hw, "The size of hash lookup table configured (%u)"
 518                          "doesn't match the number hardware can supported"
 519                          "(%u)", reta_size, indir_size);
 520                 return -EINVAL;
 521         }
 522         rte_spinlock_lock(&hw->lock);
 523         memcpy(indirection_tbl, rss_cfg->rss_indirection_tbl,
 524                sizeof(rss_cfg->rss_indirection_tbl));
 525         for (i = 0; i < reta_size; i++) {
 526                 idx = i / RTE_RETA_GROUP_SIZE;
 527                 shift = i % RTE_RETA_GROUP_SIZE;
 528                 if (reta_conf[idx].reta[shift] >= hw->alloc_rss_size) {
 529                         rte_spinlock_unlock(&hw->lock);
 530                         hns3_err(hw, "queue id(%u) set to redirection table "
 531                                  "exceeds queue number(%u) allocated to a TC",
 532                                  reta_conf[idx].reta[shift],
 533                                  hw->alloc_rss_size);
 534                         return -EINVAL;
 535                 }
 536
 537                 if (reta_conf[idx].mask & (1ULL << shift))
 538                         indirection_tbl[i] = reta_conf[idx].reta[shift];
 539         }
 540
 541         ret = hns3_set_rss_indir_table(hw, indirection_tbl,
 542                                        HNS3_RSS_IND_TBL_SIZE);
 543
 544         rte_spinlock_unlock(&hw->lock);
 545         return ret;
 546 }
 547
 548 /*
 549  * Get rss redirection table of RSS hash configuration.
 550  * @param dev
 551  *   Pointer to Ethernet device.
 552  * @praram reta_conf
 553  *   Pointer to the configuration select of mask and redirection tables.
 554  * @param reta_size
 555  *   Redirection table size.
 556  * @return
 557  *   0 on success, a negative errno value otherwise is set.
 558  */
 559 int
 560 hns3_dev_rss_reta_query(struct rte_eth_dev *dev,
 561                         struct rte_eth_rss_reta_entry64 *reta_conf,
 562                         uint16_t reta_size)
 563 {
 564         struct hns3_adapter *hns = dev->data->dev_private;
 565         struct hns3_hw *hw = &hns->hw;
 566         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 567         uint16_t i, indir_size = HNS3_RSS_IND_TBL_SIZE; /* Table size is 512 */
 568         uint16_t idx, shift;
 569
 570         if (reta_size != indir_size || reta_size > ETH_RSS_RETA_SIZE_512) {
 571                 hns3_err(hw, "The size of hash lookup table configured (%u)"
 572                          " doesn't match the number hardware can supported"
 573                          "(%u)", reta_size, indir_size);
 574                 return -EINVAL;
 575         }
 576         rte_spinlock_lock(&hw->lock);
 577         for (i = 0; i < reta_size; i++) {
 578                 idx = i / RTE_RETA_GROUP_SIZE;
 579                 shift = i % RTE_RETA_GROUP_SIZE;
 580                 if (reta_conf[idx].mask & (1ULL << shift))
 581                         reta_conf[idx].reta[shift] =
 582                                                 rss_cfg->rss_indirection_tbl[i];
 583         }
 584         rte_spinlock_unlock(&hw->lock);
 585         return 0;
 586 }
 587
 588 /*
 589  * Used to configure the tc_size and tc_offset.
 590  */
 591 static int
 592 hns3_set_rss_tc_mode(struct hns3_hw *hw)
 593 {
 594         uint16_t rss_size = hw->alloc_rss_size;
 595         struct hns3_rss_tc_mode_cmd *req;
 596         uint16_t tc_offset[HNS3_MAX_TC_NUM];
 597         uint8_t tc_valid[HNS3_MAX_TC_NUM];
 598         uint16_t tc_size[HNS3_MAX_TC_NUM];
 599         struct hns3_cmd_desc desc;
 600         uint16_t roundup_size;
 601         uint16_t i;
 602         int ret;
 603
 604         req = (struct hns3_rss_tc_mode_cmd *)desc.data;
 605
 606         roundup_size = roundup_pow_of_two(rss_size);
 607         roundup_size = ilog2(roundup_size);
 608
 609         for (i = 0; i < HNS3_MAX_TC_NUM; i++) {
 610                 tc_valid[i] = !!(hw->hw_tc_map & BIT(i));
 611                 tc_size[i] = roundup_size;
 612                 tc_offset[i] = rss_size * i;
 613         }
 614
 615         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_TC_MODE, false);
 616         for (i = 0; i < HNS3_MAX_TC_NUM; i++) {
 617                 uint16_t mode = 0;
 618
 619                 hns3_set_bit(mode, HNS3_RSS_TC_VALID_B, (tc_valid[i] & 0x1));
 620                 hns3_set_field(mode, HNS3_RSS_TC_SIZE_M, HNS3_RSS_TC_SIZE_S,
 621                                tc_size[i]);
 622                 if (tc_size[i] >> HNS3_RSS_TC_SIZE_MSB_OFFSET > 0)
 623                         hns3_set_bit(mode, HNS3_RSS_TC_SIZE_MSB_S, 1);
 624                 hns3_set_field(mode, HNS3_RSS_TC_OFFSET_M, HNS3_RSS_TC_OFFSET_S,
 625                                tc_offset[i]);
 626
 627                 req->rss_tc_mode[i] = rte_cpu_to_le_16(mode);
 628         }
 629         ret = hns3_cmd_send(hw, &desc, 1);
 630         if (ret)
 631                 hns3_err(hw, "Sets rss tc mode failed %d", ret);
 632
 633         return ret;
 634 }
 635
 636 static void
 637 hns3_rss_tuple_uninit(struct hns3_hw *hw)
 638 {
 639         struct hns3_rss_input_tuple_cmd *req;
 640         struct hns3_cmd_desc desc;
 641         int ret;
 642
 643         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INPUT_TUPLE, false);
 644
 645         req = (struct hns3_rss_input_tuple_cmd *)desc.data;
 646
 647         memset(req, 0, sizeof(struct hns3_rss_tuple_cfg));
 648
 649         ret = hns3_cmd_send(hw, &desc, 1);
 650         if (ret) {
 651                 hns3_err(hw, "RSS uninit tuple failed %d", ret);
 652                 return;
 653         }
 654 }
 655
 656 /*
 657  * Set the default rss configuration in the init of driver.
 658  */
 659 void
 660 hns3_set_default_rss_args(struct hns3_hw *hw)
 661 {
 662         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 663         uint16_t queue_num = hw->alloc_rss_size;
 664         int i;
 665
 666         /* Default hash algorithm */
 667         rss_cfg->conf.func = RTE_ETH_HASH_FUNCTION_TOEPLITZ;
 668
 669         /* Default RSS key */
 670         memcpy(rss_cfg->key, hns3_hash_key, HNS3_RSS_KEY_SIZE);
 671
 672         /* Initialize RSS indirection table */
 673         for (i = 0; i < HNS3_RSS_IND_TBL_SIZE; i++)
 674                 rss_cfg->rss_indirection_tbl[i] = i % queue_num;
 675 }
 676
 677 /*
 678  * RSS initialization for hns3 pmd driver.
 679  */
 680 int
 681 hns3_config_rss(struct hns3_adapter *hns)
 682 {
 683         struct hns3_hw *hw = &hns->hw;
 684         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 685         uint8_t *hash_key = rss_cfg->key;
 686         int ret, ret1;
 687
 688         enum rte_eth_rx_mq_mode mq_mode = hw->data->dev_conf.rxmode.mq_mode;
 689
 690         switch (hw->rss_info.conf.func) {
 691         case RTE_ETH_HASH_FUNCTION_SIMPLE_XOR:
 692                 hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_SIMPLE;
 693                 break;
 694         case RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ:
 695                 hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_SYMMETRIC_TOEP;
 696                 break;
 697         default:
 698                 hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_TOEPLITZ;
 699                 break;
 700         }
 701
 702         /* When RSS is off, redirect the packet queue 0 */
 703         if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG) == 0)
 704                 hns3_rss_uninit(hns);
 705
 706         /* Configure RSS hash algorithm and hash key offset */
 707         ret = hns3_set_rss_algo_key(hw, hash_key);
 708         if (ret)
 709                 return ret;
 710
 711         /* Configure the tuple selection for RSS hash input */
 712         ret = hns3_set_rss_input_tuple(hw);
 713         if (ret)
 714                 return ret;
 715
 716         /*
 717          * When RSS is off, it doesn't need to configure rss redirection table
 718          * to hardware.
 719          */
 720         if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG)) {
 721                 ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl,
 722                                                HNS3_RSS_IND_TBL_SIZE);
 723                 if (ret)
 724                         goto rss_tuple_uninit;
 725         }
 726
 727         ret = hns3_set_rss_tc_mode(hw);
 728         if (ret)
 729                 goto rss_indir_table_uninit;
 730
 731         return ret;
 732
 733 rss_indir_table_uninit:
 734         if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG)) {
 735                 ret1 = hns3_rss_reset_indir_table(hw);
 736                 if (ret1 != 0)
 737                         return ret;
 738         }
 739
 740 rss_tuple_uninit:
 741         hns3_rss_tuple_uninit(hw);
 742
 743         /* Disable RSS */
 744         hw->rss_info.conf.types = 0;
 745
 746         return ret;
 747 }
 748
 749 /*
 750  * RSS uninitialization for hns3 pmd driver.
 751  */
 752 void
 753 hns3_rss_uninit(struct hns3_adapter *hns)
 754 {
 755         struct hns3_hw *hw = &hns->hw;
 756         int ret;
 757
 758         hns3_rss_tuple_uninit(hw);
 759         ret = hns3_rss_reset_indir_table(hw);
 760         if (ret != 0)
 761                 return;
 762
 763         /* Disable RSS */
 764         hw->rss_info.conf.types = 0;
 765 }