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 /*
  27  * rss_generic_config command function, opcode:0x0D01.
  28  * Used to set algorithm, key_offset and hash key of rss.
  29  */
  30 int
  31 hns3_set_rss_algo_key(struct hns3_hw *hw, uint8_t hash_algo, const uint8_t *key)
  32 {
  33 #define HNS3_KEY_OFFSET_MAX     3
  34 #define HNS3_SET_HASH_KEY_BYTE_FOUR     2
  35
  36         struct hns3_rss_generic_config_cmd *req;
  37         struct hns3_cmd_desc desc;
  38         uint32_t key_offset, key_size;
  39         const uint8_t *key_cur;
  40         uint8_t cur_offset;
  41         int ret;
  42
  43         req = (struct hns3_rss_generic_config_cmd *)desc.data;
  44
  45         /*
  46          * key_offset=0, hash key byte0~15 is set to hardware.
  47          * key_offset=1, hash key byte16~31 is set to hardware.
  48          * key_offset=2, hash key byte32~39 is set to hardware.
  49          */
  50         for (key_offset = 0; key_offset < HNS3_KEY_OFFSET_MAX; key_offset++) {
  51                 hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_GENERIC_CONFIG,
  52                                           false);
  53
  54                 req->hash_config |= (hash_algo & HNS3_RSS_HASH_ALGO_MASK);
  55                 req->hash_config |= (key_offset << HNS3_RSS_HASH_KEY_OFFSET_B);
  56
  57                 if (key_offset == HNS3_SET_HASH_KEY_BYTE_FOUR)
  58                         key_size = HNS3_RSS_KEY_SIZE - HNS3_RSS_HASH_KEY_NUM *
  59                         HNS3_SET_HASH_KEY_BYTE_FOUR;
  60                 else
  61                         key_size = HNS3_RSS_HASH_KEY_NUM;
  62
  63                 cur_offset = key_offset * HNS3_RSS_HASH_KEY_NUM;
  64                 key_cur = key + cur_offset;
  65                 memcpy(req->hash_key, key_cur, key_size);
  66
  67                 ret = hns3_cmd_send(hw, &desc, 1);
  68                 if (ret) {
  69                         hns3_err(hw, "Configure RSS algo key failed %d", ret);
  70                         return ret;
  71                 }
  72         }
  73         /* Update the shadow RSS key with user specified */
  74         memcpy(hw->rss_info.key, key, HNS3_RSS_KEY_SIZE);
  75         return 0;
  76 }
  77
  78 /*
  79  * Used to configure the tuple selection for RSS hash input.
  80  */
  81 static int
  82 hns3_set_rss_input_tuple(struct hns3_hw *hw)
  83 {
  84         struct hns3_rss_conf *rss_config = &hw->rss_info;
  85         struct hns3_rss_input_tuple_cmd *req;
  86         struct hns3_cmd_desc desc_tuple;
  87         int ret;
  88
  89         hns3_cmd_setup_basic_desc(&desc_tuple, HNS3_OPC_RSS_INPUT_TUPLE, false);
  90
  91         req = (struct hns3_rss_input_tuple_cmd *)desc_tuple.data;
  92
  93         req->ipv4_tcp_en = rss_config->rss_tuple_sets.ipv4_tcp_en;
  94         req->ipv4_udp_en = rss_config->rss_tuple_sets.ipv4_udp_en;
  95         req->ipv4_sctp_en = rss_config->rss_tuple_sets.ipv4_sctp_en;
  96         req->ipv4_fragment_en = rss_config->rss_tuple_sets.ipv4_fragment_en;
  97         req->ipv6_tcp_en = rss_config->rss_tuple_sets.ipv6_tcp_en;
  98         req->ipv6_udp_en = rss_config->rss_tuple_sets.ipv6_udp_en;
  99         req->ipv6_sctp_en = rss_config->rss_tuple_sets.ipv6_sctp_en;
 100         req->ipv6_fragment_en = rss_config->rss_tuple_sets.ipv6_fragment_en;
 101
 102         ret = hns3_cmd_send(hw, &desc_tuple, 1);
 103         if (ret)
 104                 hns3_err(hw, "Configure RSS input tuple mode failed %d", ret);
 105
 106         return ret;
 107 }
 108
 109 /*
 110  * rss_indirection_table command function, opcode:0x0D07.
 111  * Used to configure the indirection table of rss.
 112  */
 113 int
 114 hns3_set_rss_indir_table(struct hns3_hw *hw, uint8_t *indir, uint16_t size)
 115 {
 116         struct hns3_rss_indirection_table_cmd *req;
 117         struct hns3_cmd_desc desc;
 118         int ret, i, j, num;
 119
 120         req = (struct hns3_rss_indirection_table_cmd *)desc.data;
 121
 122         for (i = 0; i < size / HNS3_RSS_CFG_TBL_SIZE; i++) {
 123                 hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INDIR_TABLE,
 124                                           false);
 125                 req->start_table_index =
 126                                 rte_cpu_to_le_16(i * HNS3_RSS_CFG_TBL_SIZE);
 127                 req->rss_set_bitmap = rte_cpu_to_le_16(HNS3_RSS_SET_BITMAP_MSK);
 128                 for (j = 0; j < HNS3_RSS_CFG_TBL_SIZE; j++) {
 129                         num = i * HNS3_RSS_CFG_TBL_SIZE + j;
 130                         req->rss_result[j] = indir[num];
 131                 }
 132                 ret = hns3_cmd_send(hw, &desc, 1);
 133                 if (ret) {
 134                         hns3_err(hw,
 135                                  "Sets RSS indirection table failed %d size %u",
 136                                  ret, size);
 137                         return ret;
 138                 }
 139         }
 140
 141         /* Update redirection table of hw */
 142         memcpy(hw->rss_info.rss_indirection_tbl, indir, HNS3_RSS_IND_TBL_SIZE);
 143
 144         return 0;
 145 }
 146
 147 int
 148 hns3_rss_reset_indir_table(struct hns3_hw *hw)
 149 {
 150         uint8_t *lut;
 151         int ret;
 152
 153         lut = rte_zmalloc("hns3_rss_lut", HNS3_RSS_IND_TBL_SIZE, 0);
 154         if (lut == NULL) {
 155                 hns3_err(hw, "No hns3_rss_lut memory can be allocated");
 156                 return -ENOMEM;
 157         }
 158
 159         ret = hns3_set_rss_indir_table(hw, lut, HNS3_RSS_IND_TBL_SIZE);
 160         if (ret)
 161                 hns3_err(hw, "RSS uninit indir table failed: %d", ret);
 162         rte_free(lut);
 163
 164         return ret;
 165 }
 166
 167 int
 168 hns3_set_rss_tuple_by_rss_hf(struct hns3_hw *hw,
 169                              struct hns3_rss_tuple_cfg *tuple, uint64_t rss_hf)
 170 {
 171         struct hns3_rss_input_tuple_cmd *req;
 172         struct hns3_cmd_desc desc;
 173         uint32_t i;
 174         int ret;
 175
 176         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INPUT_TUPLE, false);
 177
 178         req = (struct hns3_rss_input_tuple_cmd *)desc.data;
 179
 180         /* Enable ipv4 or ipv6 tuple by flow type */
 181         for (i = 0; i < RTE_ETH_FLOW_MAX; i++) {
 182                 switch (rss_hf & (1ULL << i)) {
 183                 case ETH_RSS_NONFRAG_IPV4_TCP:
 184                         req->ipv4_tcp_en = HNS3_RSS_INPUT_TUPLE_OTHER;
 185                         break;
 186                 case ETH_RSS_NONFRAG_IPV4_UDP:
 187                         req->ipv4_udp_en = HNS3_RSS_INPUT_TUPLE_OTHER;
 188                         break;
 189                 case ETH_RSS_NONFRAG_IPV4_SCTP:
 190                         req->ipv4_sctp_en = HNS3_RSS_INPUT_TUPLE_SCTP;
 191                         break;
 192                 case ETH_RSS_FRAG_IPV4:
 193                         req->ipv4_fragment_en |= HNS3_IP_FRAG_BIT_MASK;
 194                         break;
 195                 case ETH_RSS_NONFRAG_IPV4_OTHER:
 196                         req->ipv4_fragment_en |= HNS3_IP_OTHER_BIT_MASK;
 197                         break;
 198                 case ETH_RSS_NONFRAG_IPV6_TCP:
 199                         req->ipv6_tcp_en = HNS3_RSS_INPUT_TUPLE_OTHER;
 200                         break;
 201                 case ETH_RSS_NONFRAG_IPV6_UDP:
 202                         req->ipv6_udp_en = HNS3_RSS_INPUT_TUPLE_OTHER;
 203                         break;
 204                 case ETH_RSS_NONFRAG_IPV6_SCTP:
 205                         req->ipv6_sctp_en = HNS3_RSS_INPUT_TUPLE_SCTP;
 206                         break;
 207                 case ETH_RSS_FRAG_IPV6:
 208                         req->ipv6_fragment_en |= HNS3_IP_FRAG_BIT_MASK;
 209                         break;
 210                 case ETH_RSS_NONFRAG_IPV6_OTHER:
 211                         req->ipv6_fragment_en |= HNS3_IP_OTHER_BIT_MASK;
 212                         break;
 213                 default:
 214                         /*
 215                          * rss_hf doesn't include unsupported flow types
 216                          * because the API framework has checked it, and
 217                          * this branch will never go unless rss_hf is zero.
 218                          */
 219                         break;
 220                 }
 221         }
 222
 223         ret = hns3_cmd_send(hw, &desc, 1);
 224         if (ret) {
 225                 hns3_err(hw, "Update RSS flow types tuples failed %d", ret);
 226                 return ret;
 227         }
 228
 229         tuple->ipv4_tcp_en = req->ipv4_tcp_en;
 230         tuple->ipv4_udp_en = req->ipv4_udp_en;
 231         tuple->ipv4_sctp_en = req->ipv4_sctp_en;
 232         tuple->ipv4_fragment_en = req->ipv4_fragment_en;
 233         tuple->ipv6_tcp_en = req->ipv6_tcp_en;
 234         tuple->ipv6_udp_en = req->ipv6_udp_en;
 235         tuple->ipv6_sctp_en = req->ipv6_sctp_en;
 236         tuple->ipv6_fragment_en = req->ipv6_fragment_en;
 237
 238         return 0;
 239 }
 240
 241 /*
 242  * Configure RSS hash protocols and hash key.
 243  * @param dev
 244  *   Pointer to Ethernet device.
 245  * @praram rss_conf
 246  *   The configuration select of  rss key size and tuple flow_types.
 247  * @return
 248  *   0 on success, a negative errno value otherwise is set.
 249  */
 250 int
 251 hns3_dev_rss_hash_update(struct rte_eth_dev *dev,
 252                          struct rte_eth_rss_conf *rss_conf)
 253 {
 254         struct hns3_adapter *hns = dev->data->dev_private;
 255         struct hns3_hw *hw = &hns->hw;
 256         struct hns3_rss_tuple_cfg *tuple = &hw->rss_info.rss_tuple_sets;
 257         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 258         uint8_t key_len = rss_conf->rss_key_len;
 259         uint8_t algo;
 260         uint64_t rss_hf = rss_conf->rss_hf;
 261         uint8_t *key = rss_conf->rss_key;
 262         int ret;
 263
 264         if (hw->rss_dis_flag)
 265                 return -EINVAL;
 266
 267         rte_spinlock_lock(&hw->lock);
 268         ret = hns3_set_rss_tuple_by_rss_hf(hw, tuple, rss_hf);
 269         if (ret)
 270                 goto conf_err;
 271
 272         if (rss_cfg->conf.types && rss_hf == 0) {
 273                 /* Disable RSS, reset indirection table by local variable */
 274                 ret = hns3_rss_reset_indir_table(hw);
 275                 if (ret)
 276                         goto conf_err;
 277         } else if (rss_hf && rss_cfg->conf.types == 0) {
 278                 /* Enable RSS, restore indirection table by hw's config */
 279                 ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl,
 280                                                HNS3_RSS_IND_TBL_SIZE);
 281                 if (ret)
 282                         goto conf_err;
 283         }
 284
 285         /* Update supported flow types when set tuple success */
 286         rss_cfg->conf.types = rss_hf;
 287
 288         if (key) {
 289                 if (key_len != HNS3_RSS_KEY_SIZE) {
 290                         hns3_err(hw, "The hash key len(%u) is invalid",
 291                                  key_len);
 292                         ret = -EINVAL;
 293                         goto conf_err;
 294                 }
 295                 algo = rss_cfg->conf.func == RTE_ETH_HASH_FUNCTION_SIMPLE_XOR ?
 296                         HNS3_RSS_HASH_ALGO_SIMPLE : HNS3_RSS_HASH_ALGO_TOEPLITZ;
 297                 ret = hns3_set_rss_algo_key(hw, algo, key);
 298                 if (ret)
 299                         goto conf_err;
 300         }
 301         rte_spinlock_unlock(&hw->lock);
 302
 303         return 0;
 304
 305 conf_err:
 306         rte_spinlock_unlock(&hw->lock);
 307         return ret;
 308 }
 309
 310 /*
 311  * Get rss key and rss_hf types set of RSS hash configuration.
 312  * @param dev
 313  *   Pointer to Ethernet device.
 314  * @praram rss_conf
 315  *   The buffer to get rss key size and tuple types.
 316  * @return
 317  *   0 on success.
 318  */
 319 int
 320 hns3_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 321                            struct rte_eth_rss_conf *rss_conf)
 322 {
 323         struct hns3_adapter *hns = dev->data->dev_private;
 324         struct hns3_hw *hw = &hns->hw;
 325         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 326
 327         rte_spinlock_lock(&hw->lock);
 328         rss_conf->rss_hf = rss_cfg->conf.types;
 329
 330         /* Get the RSS Key required by the user */
 331         if (rss_conf->rss_key && rss_conf->rss_key_len >= HNS3_RSS_KEY_SIZE) {
 332                 memcpy(rss_conf->rss_key, rss_cfg->key, HNS3_RSS_KEY_SIZE);
 333                 rss_conf->rss_key_len = HNS3_RSS_KEY_SIZE;
 334         }
 335         rte_spinlock_unlock(&hw->lock);
 336
 337         return 0;
 338 }
 339
 340 /*
 341  * Update rss redirection table of RSS.
 342  * @param dev
 343  *   Pointer to Ethernet device.
 344  * @praram reta_conf
 345  *   Pointer to the configuration select of mask and redirection tables.
 346  * @param reta_size
 347  *   Redirection table size.
 348  * @return
 349  *   0 on success, a negative errno value otherwise is set.
 350  */
 351 int
 352 hns3_dev_rss_reta_update(struct rte_eth_dev *dev,
 353                          struct rte_eth_rss_reta_entry64 *reta_conf,
 354                          uint16_t reta_size)
 355 {
 356         struct hns3_adapter *hns = dev->data->dev_private;
 357         struct hns3_hw *hw = &hns->hw;
 358         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 359         uint16_t i, indir_size = HNS3_RSS_IND_TBL_SIZE; /* Table size is 512 */
 360         uint8_t indirection_tbl[HNS3_RSS_IND_TBL_SIZE];
 361         uint16_t idx, shift, allow_rss_queues;
 362         int ret;
 363
 364         if (reta_size != indir_size || reta_size > ETH_RSS_RETA_SIZE_512) {
 365                 hns3_err(hw, "The size of hash lookup table configured (%u)"
 366                          "doesn't match the number hardware can supported"
 367                          "(%u)", reta_size, indir_size);
 368                 return -EINVAL;
 369         }
 370         rte_spinlock_lock(&hw->lock);
 371         memcpy(indirection_tbl, rss_cfg->rss_indirection_tbl,
 372                 HNS3_RSS_IND_TBL_SIZE);
 373         allow_rss_queues = RTE_MIN(dev->data->nb_rx_queues, hw->rss_size_max);
 374         for (i = 0; i < reta_size; i++) {
 375                 idx = i / RTE_RETA_GROUP_SIZE;
 376                 shift = i % RTE_RETA_GROUP_SIZE;
 377                 if (reta_conf[idx].reta[shift] >= allow_rss_queues) {
 378                         rte_spinlock_unlock(&hw->lock);
 379                         hns3_err(hw, "Invalid queue id(%u) to be set in "
 380                                  "redirection table, max number of rss "
 381                                  "queues: %u", reta_conf[idx].reta[shift],
 382                                  allow_rss_queues);
 383                         return -EINVAL;
 384                 }
 385
 386                 if (reta_conf[idx].mask & (1ULL << shift))
 387                         indirection_tbl[i] = reta_conf[idx].reta[shift];
 388         }
 389
 390         ret = hns3_set_rss_indir_table(hw, indirection_tbl,
 391                                        HNS3_RSS_IND_TBL_SIZE);
 392
 393         rte_spinlock_unlock(&hw->lock);
 394         return ret;
 395 }
 396
 397 /*
 398  * Get rss redirection table of RSS hash configuration.
 399  * @param dev
 400  *   Pointer to Ethernet device.
 401  * @praram reta_conf
 402  *   Pointer to the configuration select of mask and redirection tables.
 403  * @param reta_size
 404  *   Redirection table size.
 405  * @return
 406  *   0 on success, a negative errno value otherwise is set.
 407  */
 408 int
 409 hns3_dev_rss_reta_query(struct rte_eth_dev *dev,
 410                         struct rte_eth_rss_reta_entry64 *reta_conf,
 411                         uint16_t reta_size)
 412 {
 413         struct hns3_adapter *hns = dev->data->dev_private;
 414         struct hns3_hw *hw = &hns->hw;
 415         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 416         uint16_t i, indir_size = HNS3_RSS_IND_TBL_SIZE; /* Table size is 512 */
 417         uint16_t idx, shift;
 418
 419         if (reta_size != indir_size || reta_size > ETH_RSS_RETA_SIZE_512) {
 420                 hns3_err(hw, "The size of hash lookup table configured (%u)"
 421                          " doesn't match the number hardware can supported"
 422                          "(%u)", reta_size, indir_size);
 423                 return -EINVAL;
 424         }
 425         rte_spinlock_lock(&hw->lock);
 426         for (i = 0; i < reta_size; i++) {
 427                 idx = i / RTE_RETA_GROUP_SIZE;
 428                 shift = i % RTE_RETA_GROUP_SIZE;
 429                 if (reta_conf[idx].mask & (1ULL << shift))
 430                         reta_conf[idx].reta[shift] =
 431                                                 rss_cfg->rss_indirection_tbl[i];
 432         }
 433         rte_spinlock_unlock(&hw->lock);
 434         return 0;
 435 }
 436
 437 /*
 438  * Used to configure the tc_size and tc_offset.
 439  */
 440 static int
 441 hns3_set_rss_tc_mode(struct hns3_hw *hw)
 442 {
 443         uint16_t rss_size = hw->alloc_rss_size;
 444         struct hns3_rss_tc_mode_cmd *req;
 445         uint16_t tc_offset[HNS3_MAX_TC_NUM];
 446         uint8_t tc_valid[HNS3_MAX_TC_NUM];
 447         uint16_t tc_size[HNS3_MAX_TC_NUM];
 448         struct hns3_cmd_desc desc;
 449         uint16_t roundup_size;
 450         uint16_t i;
 451         int ret;
 452
 453         req = (struct hns3_rss_tc_mode_cmd *)desc.data;
 454
 455         roundup_size = roundup_pow_of_two(rss_size);
 456         roundup_size = ilog2(roundup_size);
 457
 458         for (i = 0; i < HNS3_MAX_TC_NUM; i++) {
 459                 tc_valid[i] = !!(hw->hw_tc_map & BIT(i));
 460                 tc_size[i] = roundup_size;
 461                 tc_offset[i] = rss_size * i;
 462         }
 463
 464         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_TC_MODE, false);
 465         for (i = 0; i < HNS3_MAX_TC_NUM; i++) {
 466                 uint16_t mode = 0;
 467
 468                 hns3_set_bit(mode, HNS3_RSS_TC_VALID_B, (tc_valid[i] & 0x1));
 469                 hns3_set_field(mode, HNS3_RSS_TC_SIZE_M, HNS3_RSS_TC_SIZE_S,
 470                                tc_size[i]);
 471                 hns3_set_field(mode, HNS3_RSS_TC_OFFSET_M, HNS3_RSS_TC_OFFSET_S,
 472                                tc_offset[i]);
 473
 474                 req->rss_tc_mode[i] = rte_cpu_to_le_16(mode);
 475         }
 476         ret = hns3_cmd_send(hw, &desc, 1);
 477         if (ret)
 478                 hns3_err(hw, "Sets rss tc mode failed %d", ret);
 479
 480         return ret;
 481 }
 482
 483 static void
 484 hns3_rss_tuple_uninit(struct hns3_hw *hw)
 485 {
 486         struct hns3_rss_input_tuple_cmd *req;
 487         struct hns3_cmd_desc desc;
 488         int ret;
 489
 490         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INPUT_TUPLE, false);
 491
 492         req = (struct hns3_rss_input_tuple_cmd *)desc.data;
 493
 494         memset(req, 0, sizeof(struct hns3_rss_tuple_cfg));
 495
 496         ret = hns3_cmd_send(hw, &desc, 1);
 497         if (ret) {
 498                 hns3_err(hw, "RSS uninit tuple failed %d", ret);
 499                 return;
 500         }
 501 }
 502
 503 /*
 504  * Set the default rss configuration in the init of driver.
 505  */
 506 void
 507 hns3_set_default_rss_args(struct hns3_hw *hw)
 508 {
 509         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 510         uint16_t queue_num = hw->alloc_rss_size;
 511         int i;
 512
 513         /* Default hash algorithm */
 514         rss_cfg->conf.func = RTE_ETH_HASH_FUNCTION_TOEPLITZ;
 515
 516         /* Default RSS key */
 517         memcpy(rss_cfg->key, hns3_hash_key, HNS3_RSS_KEY_SIZE);
 518
 519         /* Initialize RSS indirection table */
 520         for (i = 0; i < HNS3_RSS_IND_TBL_SIZE; i++)
 521                 rss_cfg->rss_indirection_tbl[i] = i % queue_num;
 522 }
 523
 524 /*
 525  * RSS initialization for hns3 pmd driver.
 526  */
 527 int
 528 hns3_config_rss(struct hns3_adapter *hns)
 529 {
 530         struct hns3_hw *hw = &hns->hw;
 531         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 532         uint8_t hash_algo =
 533                 (hw->rss_info.conf.func == RTE_ETH_HASH_FUNCTION_TOEPLITZ ?
 534                  HNS3_RSS_HASH_ALGO_TOEPLITZ : HNS3_RSS_HASH_ALGO_SIMPLE);
 535         uint8_t *hash_key = rss_cfg->key;
 536         int ret, ret1;
 537
 538         enum rte_eth_rx_mq_mode mq_mode = hw->data->dev_conf.rxmode.mq_mode;
 539
 540         /* When RSS is off, redirect the packet queue 0 */
 541         if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG) == 0)
 542                 hns3_rss_uninit(hns);
 543
 544         /* Configure RSS hash algorithm and hash key offset */
 545         ret = hns3_set_rss_algo_key(hw, hash_algo, hash_key);
 546         if (ret)
 547                 return ret;
 548
 549         /* Configure the tuple selection for RSS hash input */
 550         ret = hns3_set_rss_input_tuple(hw);
 551         if (ret)
 552                 return ret;
 553
 554         /*
 555          * When RSS is off, it doesn't need to configure rss redirection table
 556          * to hardware.
 557          */
 558         if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG)) {
 559                 ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl,
 560                                                HNS3_RSS_IND_TBL_SIZE);
 561                 if (ret)
 562                         goto rss_tuple_uninit;
 563         }
 564
 565         ret = hns3_set_rss_tc_mode(hw);
 566         if (ret)
 567                 goto rss_indir_table_uninit;
 568
 569         return ret;
 570
 571 rss_indir_table_uninit:
 572         if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG)) {
 573                 ret1 = hns3_rss_reset_indir_table(hw);
 574                 if (ret1 != 0)
 575                         return ret;
 576         }
 577
 578 rss_tuple_uninit:
 579         hns3_rss_tuple_uninit(hw);
 580
 581         /* Disable RSS */
 582         hw->rss_info.conf.types = 0;
 583
 584         return ret;
 585 }
 586
 587 /*
 588  * RSS uninitialization for hns3 pmd driver.
 589  */
 590 void
 591 hns3_rss_uninit(struct hns3_adapter *hns)
 592 {
 593         struct hns3_hw *hw = &hns->hw;
 594         int ret;
 595
 596         hns3_rss_tuple_uninit(hw);
 597         ret = hns3_rss_reset_indir_table(hw);
 598         if (ret != 0)
 599                 return;
 600
 601         /* Disable RSS */
 602         hw->rss_info.conf.types = 0;
 603 }