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_UDP ENABLE FIELD */
  65         HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D = 50,
  66         HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S,
  67         HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_VER,
  68
  69         /* IPV6 ENABLE FIELD */
  70         HNS3_RSS_FIELD_IPV6_NONFRAG_IP_D = 56,
  71         HNS3_RSS_FIELD_IPV6_NONFRAG_IP_S,
  72         HNS3_RSS_FIELD_IPV6_FRAG_IP_D,
  73         HNS3_RSS_FIELD_IPV6_FRAG_IP_S
  74 };
  75
  76 static const struct {
  77         uint64_t rss_types;
  78         uint64_t rss_field;
  79 } hns3_set_tuple_table[] = {
  80         { ETH_RSS_FRAG_IPV4 | ETH_RSS_L3_SRC_ONLY,
  81           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_S) },
  82         { ETH_RSS_FRAG_IPV4 | ETH_RSS_L3_DST_ONLY,
  83           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_D) },
  84         { ETH_RSS_NONFRAG_IPV4_TCP | ETH_RSS_L3_SRC_ONLY,
  85           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_S) },
  86         { ETH_RSS_NONFRAG_IPV4_TCP | ETH_RSS_L3_DST_ONLY,
  87           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_D) },
  88         { ETH_RSS_NONFRAG_IPV4_TCP | ETH_RSS_L4_SRC_ONLY,
  89           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_S) },
  90         { ETH_RSS_NONFRAG_IPV4_TCP | ETH_RSS_L4_DST_ONLY,
  91           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_D) },
  92         { ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_L3_SRC_ONLY,
  93           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_S) },
  94         { ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_L3_DST_ONLY,
  95           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_D) },
  96         { ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_L4_SRC_ONLY,
  97           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_S) },
  98         { ETH_RSS_NONFRAG_IPV4_UDP | ETH_RSS_L4_DST_ONLY,
  99           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_D) },
 100         { ETH_RSS_NONFRAG_IPV4_SCTP | ETH_RSS_L3_SRC_ONLY,
 101           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_S) },
 102         { ETH_RSS_NONFRAG_IPV4_SCTP | ETH_RSS_L3_DST_ONLY,
 103           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_D) },
 104         { ETH_RSS_NONFRAG_IPV4_SCTP | ETH_RSS_L4_SRC_ONLY,
 105           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_S) },
 106         { ETH_RSS_NONFRAG_IPV4_SCTP | ETH_RSS_L4_DST_ONLY,
 107           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_D) },
 108         { ETH_RSS_NONFRAG_IPV4_OTHER | ETH_RSS_L3_SRC_ONLY,
 109           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_S) },
 110         { ETH_RSS_NONFRAG_IPV4_OTHER | ETH_RSS_L3_DST_ONLY,
 111           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_D) },
 112         { ETH_RSS_FRAG_IPV6 | ETH_RSS_L3_SRC_ONLY,
 113           BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_S) },
 114         { ETH_RSS_FRAG_IPV6 | ETH_RSS_L3_DST_ONLY,
 115           BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_D) },
 116         { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_L3_SRC_ONLY,
 117           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_S) },
 118         { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_L3_DST_ONLY,
 119           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_D) },
 120         { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_L4_SRC_ONLY,
 121           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_S) },
 122         { ETH_RSS_NONFRAG_IPV6_TCP | ETH_RSS_L4_DST_ONLY,
 123           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_D) },
 124         { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_L3_SRC_ONLY,
 125           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_S) },
 126         { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_L3_DST_ONLY,
 127           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_D) },
 128         { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_L4_SRC_ONLY,
 129           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_S) },
 130         { ETH_RSS_NONFRAG_IPV6_UDP | ETH_RSS_L4_DST_ONLY,
 131           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_D) },
 132         { ETH_RSS_NONFRAG_IPV6_SCTP | ETH_RSS_L3_SRC_ONLY,
 133           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S) },
 134         { ETH_RSS_NONFRAG_IPV6_SCTP | ETH_RSS_L3_DST_ONLY,
 135           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D) },
 136         { ETH_RSS_NONFRAG_IPV6_OTHER | ETH_RSS_L3_SRC_ONLY,
 137           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_S) },
 138         { ETH_RSS_NONFRAG_IPV6_OTHER | ETH_RSS_L3_DST_ONLY,
 139           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_D) },
 140 };
 141
 142 static const struct {
 143         uint64_t rss_types;
 144         uint64_t rss_field;
 145 } hns3_set_rss_types[] = {
 146         { ETH_RSS_FRAG_IPV4, BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_D) |
 147           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_FRAG_IP_S) },
 148         { ETH_RSS_NONFRAG_IPV4_TCP, BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_S) |
 149           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_D) |
 150           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_S) |
 151           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_D) },
 152         { ETH_RSS_NONFRAG_IPV4_TCP, BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_S) |
 153           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_IP_D) |
 154           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_S) |
 155           BIT_ULL(HNS3_RSS_FIELD_IPV4_TCP_EN_TCP_D) },
 156         { ETH_RSS_NONFRAG_IPV4_UDP, BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_S) |
 157           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_IP_D) |
 158           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_S) |
 159           BIT_ULL(HNS3_RSS_FIELD_IPV4_UDP_EN_UDP_D) },
 160         { ETH_RSS_NONFRAG_IPV4_SCTP, BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_S) |
 161           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_IP_D) |
 162           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_S) |
 163           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_D) |
 164           BIT_ULL(HNS3_RSS_FIELD_IPV4_SCTP_EN_SCTP_VER) },
 165         { ETH_RSS_NONFRAG_IPV4_OTHER,
 166           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_S) |
 167           BIT_ULL(HNS3_RSS_FIELD_IPV4_EN_NONFRAG_IP_D) },
 168         { ETH_RSS_FRAG_IPV6, BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_S) |
 169           BIT_ULL(HNS3_RSS_FIELD_IPV6_FRAG_IP_D) },
 170         { ETH_RSS_NONFRAG_IPV6_TCP, BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_S) |
 171           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_IP_D) |
 172           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_S) |
 173           BIT_ULL(HNS3_RSS_FIELD_IPV6_TCP_EN_TCP_D) },
 174         { ETH_RSS_NONFRAG_IPV6_UDP, BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_S) |
 175           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_IP_D) |
 176           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_S) |
 177           BIT_ULL(HNS3_RSS_FIELD_IPV6_UDP_EN_UDP_D) },
 178         { ETH_RSS_NONFRAG_IPV6_SCTP, BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_S) |
 179           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_IP_D) |
 180           BIT_ULL(HNS3_RSS_FIELD_IPV6_SCTP_EN_SCTP_VER) },
 181         { ETH_RSS_NONFRAG_IPV6_OTHER,
 182           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_S) |
 183           BIT_ULL(HNS3_RSS_FIELD_IPV6_NONFRAG_IP_D) }
 184 };
 185
 186 /*
 187  * rss_generic_config command function, opcode:0x0D01.
 188  * Used to set algorithm, key_offset and hash key of rss.
 189  */
 190 int
 191 hns3_set_rss_algo_key(struct hns3_hw *hw, const uint8_t *key)
 192 {
 193 #define HNS3_KEY_OFFSET_MAX     3
 194 #define HNS3_SET_HASH_KEY_BYTE_FOUR     2
 195
 196         struct hns3_rss_generic_config_cmd *req;
 197         struct hns3_cmd_desc desc;
 198         uint32_t key_offset, key_size;
 199         const uint8_t *key_cur;
 200         uint8_t cur_offset;
 201         int ret;
 202
 203         req = (struct hns3_rss_generic_config_cmd *)desc.data;
 204
 205         /*
 206          * key_offset=0, hash key byte0~15 is set to hardware.
 207          * key_offset=1, hash key byte16~31 is set to hardware.
 208          * key_offset=2, hash key byte32~39 is set to hardware.
 209          */
 210         for (key_offset = 0; key_offset < HNS3_KEY_OFFSET_MAX; key_offset++) {
 211                 hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_GENERIC_CONFIG,
 212                                           false);
 213
 214                 req->hash_config |=
 215                         (hw->rss_info.hash_algo & HNS3_RSS_HASH_ALGO_MASK);
 216                 req->hash_config |= (key_offset << HNS3_RSS_HASH_KEY_OFFSET_B);
 217
 218                 if (key_offset == HNS3_SET_HASH_KEY_BYTE_FOUR)
 219                         key_size = HNS3_RSS_KEY_SIZE - HNS3_RSS_HASH_KEY_NUM *
 220                         HNS3_SET_HASH_KEY_BYTE_FOUR;
 221                 else
 222                         key_size = HNS3_RSS_HASH_KEY_NUM;
 223
 224                 cur_offset = key_offset * HNS3_RSS_HASH_KEY_NUM;
 225                 key_cur = key + cur_offset;
 226                 memcpy(req->hash_key, key_cur, key_size);
 227
 228                 ret = hns3_cmd_send(hw, &desc, 1);
 229                 if (ret) {
 230                         hns3_err(hw, "Configure RSS algo key failed %d", ret);
 231                         return ret;
 232                 }
 233         }
 234         /* Update the shadow RSS key with user specified */
 235         memcpy(hw->rss_info.key, key, HNS3_RSS_KEY_SIZE);
 236         return 0;
 237 }
 238
 239 /*
 240  * Used to configure the tuple selection for RSS hash input.
 241  */
 242 static int
 243 hns3_set_rss_input_tuple(struct hns3_hw *hw)
 244 {
 245         struct hns3_rss_conf *rss_config = &hw->rss_info;
 246         struct hns3_rss_input_tuple_cmd *req;
 247         struct hns3_cmd_desc desc_tuple;
 248         int ret;
 249
 250         hns3_cmd_setup_basic_desc(&desc_tuple, HNS3_OPC_RSS_INPUT_TUPLE, false);
 251
 252         req = (struct hns3_rss_input_tuple_cmd *)desc_tuple.data;
 253
 254         req->tuple_field =
 255                 rte_cpu_to_le_64(rss_config->rss_tuple_sets.rss_tuple_fields);
 256
 257         ret = hns3_cmd_send(hw, &desc_tuple, 1);
 258         if (ret)
 259                 hns3_err(hw, "Configure RSS input tuple mode failed %d", ret);
 260
 261         return ret;
 262 }
 263
 264 /*
 265  * rss_indirection_table command function, opcode:0x0D07.
 266  * Used to configure the indirection table of rss.
 267  */
 268 int
 269 hns3_set_rss_indir_table(struct hns3_hw *hw, uint16_t *indir, uint16_t size)
 270 {
 271         struct hns3_rss_indirection_table_cmd *req;
 272         struct hns3_cmd_desc desc;
 273         uint8_t qid_msb_off;
 274         uint8_t qid_msb_val;
 275         uint16_t q_id;
 276         uint16_t i, j;
 277         int ret;
 278
 279         req = (struct hns3_rss_indirection_table_cmd *)desc.data;
 280
 281         for (i = 0; i < size / HNS3_RSS_CFG_TBL_SIZE; i++) {
 282                 hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INDIR_TABLE,
 283                                           false);
 284                 req->start_table_index =
 285                                 rte_cpu_to_le_16(i * HNS3_RSS_CFG_TBL_SIZE);
 286                 req->rss_set_bitmap = rte_cpu_to_le_16(HNS3_RSS_SET_BITMAP_MSK);
 287                 for (j = 0; j < HNS3_RSS_CFG_TBL_SIZE; j++) {
 288                         q_id = indir[i * HNS3_RSS_CFG_TBL_SIZE + j];
 289                         req->rss_result_l[j] = q_id & 0xff;
 290
 291                         qid_msb_off =
 292                                 j * HNS3_RSS_CFG_TBL_BW_H / HNS3_BITS_PER_BYTE;
 293                         qid_msb_val = (q_id >> HNS3_RSS_CFG_TBL_BW_L & 0x1)
 294                                         << (j * HNS3_RSS_CFG_TBL_BW_H %
 295                                         HNS3_BITS_PER_BYTE);
 296                         req->rss_result_h[qid_msb_off] |= qid_msb_val;
 297                 }
 298
 299                 ret = hns3_cmd_send(hw, &desc, 1);
 300                 if (ret) {
 301                         hns3_err(hw,
 302                                  "Sets RSS indirection table failed %d size %u",
 303                                  ret, size);
 304                         return ret;
 305                 }
 306         }
 307
 308         /* Update redirection table of hw */
 309         memcpy(hw->rss_info.rss_indirection_tbl, indir,
 310                sizeof(hw->rss_info.rss_indirection_tbl));
 311
 312         return 0;
 313 }
 314
 315 int
 316 hns3_rss_reset_indir_table(struct hns3_hw *hw)
 317 {
 318         uint16_t *lut;
 319         int ret;
 320
 321         lut = rte_zmalloc("hns3_rss_lut",
 322                           HNS3_RSS_IND_TBL_SIZE * sizeof(uint16_t), 0);
 323         if (lut == NULL) {
 324                 hns3_err(hw, "No hns3_rss_lut memory can be allocated");
 325                 return -ENOMEM;
 326         }
 327
 328         ret = hns3_set_rss_indir_table(hw, lut, HNS3_RSS_IND_TBL_SIZE);
 329         if (ret)
 330                 hns3_err(hw, "RSS uninit indir table failed: %d", ret);
 331         rte_free(lut);
 332
 333         return ret;
 334 }
 335
 336 int
 337 hns3_set_rss_tuple_by_rss_hf(struct hns3_hw *hw,
 338                              struct hns3_rss_tuple_cfg *tuple, uint64_t rss_hf)
 339 {
 340         struct hns3_rss_input_tuple_cmd *req;
 341         struct hns3_cmd_desc desc;
 342         uint32_t fields_count = 0; /* count times for setting tuple fields */
 343         uint32_t i;
 344         int ret;
 345
 346         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INPUT_TUPLE, false);
 347
 348         req = (struct hns3_rss_input_tuple_cmd *)desc.data;
 349
 350         for (i = 0; i < RTE_DIM(hns3_set_tuple_table); i++) {
 351                 if ((rss_hf & hns3_set_tuple_table[i].rss_types) ==
 352                      hns3_set_tuple_table[i].rss_types) {
 353                         req->tuple_field |=
 354                             rte_cpu_to_le_64(hns3_set_tuple_table[i].rss_field);
 355                         fields_count++;
 356                 }
 357         }
 358
 359         /*
 360          * When user does not specify the following types or a combination of
 361          * the following types, it enables all fields for the supported RSS
 362          * types. the following types as:
 363          * - ETH_RSS_L3_SRC_ONLY
 364          * - ETH_RSS_L3_DST_ONLY
 365          * - ETH_RSS_L4_SRC_ONLY
 366          * - ETH_RSS_L4_DST_ONLY
 367          */
 368         if (fields_count == 0) {
 369                 for (i = 0; i < RTE_DIM(hns3_set_rss_types); i++) {
 370                         if ((rss_hf & hns3_set_rss_types[i].rss_types) ==
 371                              hns3_set_rss_types[i].rss_types)
 372                                 req->tuple_field |= rte_cpu_to_le_64(
 373                                         hns3_set_rss_types[i].rss_field);
 374                 }
 375         }
 376
 377         ret = hns3_cmd_send(hw, &desc, 1);
 378         if (ret) {
 379                 hns3_err(hw, "Update RSS flow types tuples failed %d", ret);
 380                 return ret;
 381         }
 382
 383         tuple->rss_tuple_fields = rte_le_to_cpu_64(req->tuple_field);
 384
 385         return 0;
 386 }
 387
 388 /*
 389  * Configure RSS hash protocols and hash key.
 390  * @param dev
 391  *   Pointer to Ethernet device.
 392  * @praram rss_conf
 393  *   The configuration select of  rss key size and tuple flow_types.
 394  * @return
 395  *   0 on success, a negative errno value otherwise is set.
 396  */
 397 int
 398 hns3_dev_rss_hash_update(struct rte_eth_dev *dev,
 399                          struct rte_eth_rss_conf *rss_conf)
 400 {
 401         struct hns3_adapter *hns = dev->data->dev_private;
 402         struct hns3_hw *hw = &hns->hw;
 403         struct hns3_rss_tuple_cfg *tuple = &hw->rss_info.rss_tuple_sets;
 404         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 405         uint8_t key_len = rss_conf->rss_key_len;
 406         uint64_t rss_hf = rss_conf->rss_hf;
 407         uint8_t *key = rss_conf->rss_key;
 408         int ret;
 409
 410         if (hw->rss_dis_flag)
 411                 return -EINVAL;
 412
 413         rte_spinlock_lock(&hw->lock);
 414         ret = hns3_set_rss_tuple_by_rss_hf(hw, tuple, rss_hf);
 415         if (ret)
 416                 goto conf_err;
 417
 418         if (rss_cfg->conf.types && rss_hf == 0) {
 419                 /* Disable RSS, reset indirection table by local variable */
 420                 ret = hns3_rss_reset_indir_table(hw);
 421                 if (ret)
 422                         goto conf_err;
 423         } else if (rss_hf && rss_cfg->conf.types == 0) {
 424                 /* Enable RSS, restore indirection table by hw's config */
 425                 ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl,
 426                                                HNS3_RSS_IND_TBL_SIZE);
 427                 if (ret)
 428                         goto conf_err;
 429         }
 430
 431         /* Update supported flow types when set tuple success */
 432         rss_cfg->conf.types = rss_hf;
 433
 434         if (key) {
 435                 if (key_len != HNS3_RSS_KEY_SIZE) {
 436                         hns3_err(hw, "The hash key len(%u) is invalid",
 437                                  key_len);
 438                         ret = -EINVAL;
 439                         goto conf_err;
 440                 }
 441                 ret = hns3_set_rss_algo_key(hw, key);
 442                 if (ret)
 443                         goto conf_err;
 444         }
 445         rte_spinlock_unlock(&hw->lock);
 446
 447         return 0;
 448
 449 conf_err:
 450         rte_spinlock_unlock(&hw->lock);
 451         return ret;
 452 }
 453
 454 /*
 455  * Get rss key and rss_hf types set of RSS hash configuration.
 456  * @param dev
 457  *   Pointer to Ethernet device.
 458  * @praram rss_conf
 459  *   The buffer to get rss key size and tuple types.
 460  * @return
 461  *   0 on success.
 462  */
 463 int
 464 hns3_dev_rss_hash_conf_get(struct rte_eth_dev *dev,
 465                            struct rte_eth_rss_conf *rss_conf)
 466 {
 467         struct hns3_adapter *hns = dev->data->dev_private;
 468         struct hns3_hw *hw = &hns->hw;
 469         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 470
 471         rte_spinlock_lock(&hw->lock);
 472         rss_conf->rss_hf = rss_cfg->conf.types;
 473
 474         /* Get the RSS Key required by the user */
 475         if (rss_conf->rss_key && rss_conf->rss_key_len >= HNS3_RSS_KEY_SIZE) {
 476                 memcpy(rss_conf->rss_key, rss_cfg->key, HNS3_RSS_KEY_SIZE);
 477                 rss_conf->rss_key_len = HNS3_RSS_KEY_SIZE;
 478         }
 479         rte_spinlock_unlock(&hw->lock);
 480
 481         return 0;
 482 }
 483
 484 /*
 485  * Update rss redirection table of RSS.
 486  * @param dev
 487  *   Pointer to Ethernet device.
 488  * @praram reta_conf
 489  *   Pointer to the configuration select of mask and redirection tables.
 490  * @param reta_size
 491  *   Redirection table size.
 492  * @return
 493  *   0 on success, a negative errno value otherwise is set.
 494  */
 495 int
 496 hns3_dev_rss_reta_update(struct rte_eth_dev *dev,
 497                          struct rte_eth_rss_reta_entry64 *reta_conf,
 498                          uint16_t reta_size)
 499 {
 500         struct hns3_adapter *hns = dev->data->dev_private;
 501         struct hns3_hw *hw = &hns->hw;
 502         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 503         uint16_t i, indir_size = HNS3_RSS_IND_TBL_SIZE; /* Table size is 512 */
 504         uint16_t indirection_tbl[HNS3_RSS_IND_TBL_SIZE];
 505         uint16_t idx, shift, allow_rss_queues;
 506         int ret;
 507
 508         if (reta_size != indir_size || reta_size > ETH_RSS_RETA_SIZE_512) {
 509                 hns3_err(hw, "The size of hash lookup table configured (%u)"
 510                          "doesn't match the number hardware can supported"
 511                          "(%u)", reta_size, indir_size);
 512                 return -EINVAL;
 513         }
 514         rte_spinlock_lock(&hw->lock);
 515         memcpy(indirection_tbl, rss_cfg->rss_indirection_tbl,
 516                sizeof(rss_cfg->rss_indirection_tbl));
 517         allow_rss_queues = RTE_MIN(dev->data->nb_rx_queues, hw->rss_size_max);
 518         for (i = 0; i < reta_size; i++) {
 519                 idx = i / RTE_RETA_GROUP_SIZE;
 520                 shift = i % RTE_RETA_GROUP_SIZE;
 521                 if (reta_conf[idx].reta[shift] >= allow_rss_queues) {
 522                         rte_spinlock_unlock(&hw->lock);
 523                         hns3_err(hw, "Invalid queue id(%u) to be set in "
 524                                  "redirection table, max number of rss "
 525                                  "queues: %u", reta_conf[idx].reta[shift],
 526                                  allow_rss_queues);
 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                                        HNS3_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 i, indir_size = HNS3_RSS_IND_TBL_SIZE; /* Table size is 512 */
 561         uint16_t idx, shift;
 562
 563         if (reta_size != indir_size || reta_size > ETH_RSS_RETA_SIZE_512) {
 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, indir_size);
 567                 return -EINVAL;
 568         }
 569         rte_spinlock_lock(&hw->lock);
 570         for (i = 0; i < reta_size; i++) {
 571                 idx = i / RTE_RETA_GROUP_SIZE;
 572                 shift = i % RTE_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 /*
 582  * Used to configure the tc_size and tc_offset.
 583  */
 584 static int
 585 hns3_set_rss_tc_mode(struct hns3_hw *hw)
 586 {
 587         uint16_t rss_size = hw->alloc_rss_size;
 588         struct hns3_rss_tc_mode_cmd *req;
 589         uint16_t tc_offset[HNS3_MAX_TC_NUM];
 590         uint8_t tc_valid[HNS3_MAX_TC_NUM];
 591         uint16_t tc_size[HNS3_MAX_TC_NUM];
 592         struct hns3_cmd_desc desc;
 593         uint16_t roundup_size;
 594         uint16_t i;
 595         int ret;
 596
 597         req = (struct hns3_rss_tc_mode_cmd *)desc.data;
 598
 599         roundup_size = roundup_pow_of_two(rss_size);
 600         roundup_size = ilog2(roundup_size);
 601
 602         for (i = 0; i < HNS3_MAX_TC_NUM; i++) {
 603                 tc_valid[i] = !!(hw->hw_tc_map & BIT(i));
 604                 tc_size[i] = roundup_size;
 605                 tc_offset[i] = rss_size * i;
 606         }
 607
 608         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_TC_MODE, false);
 609         for (i = 0; i < HNS3_MAX_TC_NUM; i++) {
 610                 uint16_t mode = 0;
 611
 612                 hns3_set_bit(mode, HNS3_RSS_TC_VALID_B, (tc_valid[i] & 0x1));
 613                 hns3_set_field(mode, HNS3_RSS_TC_SIZE_M, HNS3_RSS_TC_SIZE_S,
 614                                tc_size[i]);
 615                 if (tc_size[i] >> HNS3_RSS_TC_SIZE_MSB_OFFSET > 0)
 616                         hns3_set_bit(mode, HNS3_RSS_TC_SIZE_MSB_S, 1);
 617                 hns3_set_field(mode, HNS3_RSS_TC_OFFSET_M, HNS3_RSS_TC_OFFSET_S,
 618                                tc_offset[i]);
 619
 620                 req->rss_tc_mode[i] = rte_cpu_to_le_16(mode);
 621         }
 622         ret = hns3_cmd_send(hw, &desc, 1);
 623         if (ret)
 624                 hns3_err(hw, "Sets rss tc mode failed %d", ret);
 625
 626         return ret;
 627 }
 628
 629 static void
 630 hns3_rss_tuple_uninit(struct hns3_hw *hw)
 631 {
 632         struct hns3_rss_input_tuple_cmd *req;
 633         struct hns3_cmd_desc desc;
 634         int ret;
 635
 636         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_RSS_INPUT_TUPLE, false);
 637
 638         req = (struct hns3_rss_input_tuple_cmd *)desc.data;
 639
 640         memset(req, 0, sizeof(struct hns3_rss_tuple_cfg));
 641
 642         ret = hns3_cmd_send(hw, &desc, 1);
 643         if (ret) {
 644                 hns3_err(hw, "RSS uninit tuple failed %d", ret);
 645                 return;
 646         }
 647 }
 648
 649 /*
 650  * Set the default rss configuration in the init of driver.
 651  */
 652 void
 653 hns3_set_default_rss_args(struct hns3_hw *hw)
 654 {
 655         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 656         uint16_t queue_num = hw->alloc_rss_size;
 657         int i;
 658
 659         /* Default hash algorithm */
 660         rss_cfg->conf.func = RTE_ETH_HASH_FUNCTION_TOEPLITZ;
 661
 662         /* Default RSS key */
 663         memcpy(rss_cfg->key, hns3_hash_key, HNS3_RSS_KEY_SIZE);
 664
 665         /* Initialize RSS indirection table */
 666         for (i = 0; i < HNS3_RSS_IND_TBL_SIZE; i++)
 667                 rss_cfg->rss_indirection_tbl[i] = i % queue_num;
 668 }
 669
 670 /*
 671  * RSS initialization for hns3 pmd driver.
 672  */
 673 int
 674 hns3_config_rss(struct hns3_adapter *hns)
 675 {
 676         struct hns3_hw *hw = &hns->hw;
 677         struct hns3_rss_conf *rss_cfg = &hw->rss_info;
 678         uint8_t *hash_key = rss_cfg->key;
 679         int ret, ret1;
 680
 681         enum rte_eth_rx_mq_mode mq_mode = hw->data->dev_conf.rxmode.mq_mode;
 682
 683         switch (hw->rss_info.conf.func) {
 684         case RTE_ETH_HASH_FUNCTION_SIMPLE_XOR:
 685                 hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_SIMPLE;
 686                 break;
 687         case RTE_ETH_HASH_FUNCTION_SYMMETRIC_TOEPLITZ:
 688                 hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_SYMMETRIC_TOEP;
 689                 break;
 690         default:
 691                 hw->rss_info.hash_algo = HNS3_RSS_HASH_ALGO_TOEPLITZ;
 692                 break;
 693         }
 694
 695         /* When RSS is off, redirect the packet queue 0 */
 696         if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG) == 0)
 697                 hns3_rss_uninit(hns);
 698
 699         /* Configure RSS hash algorithm and hash key offset */
 700         ret = hns3_set_rss_algo_key(hw, hash_key);
 701         if (ret)
 702                 return ret;
 703
 704         /* Configure the tuple selection for RSS hash input */
 705         ret = hns3_set_rss_input_tuple(hw);
 706         if (ret)
 707                 return ret;
 708
 709         /*
 710          * When RSS is off, it doesn't need to configure rss redirection table
 711          * to hardware.
 712          */
 713         if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG)) {
 714                 ret = hns3_set_rss_indir_table(hw, rss_cfg->rss_indirection_tbl,
 715                                                HNS3_RSS_IND_TBL_SIZE);
 716                 if (ret)
 717                         goto rss_tuple_uninit;
 718         }
 719
 720         ret = hns3_set_rss_tc_mode(hw);
 721         if (ret)
 722                 goto rss_indir_table_uninit;
 723
 724         return ret;
 725
 726 rss_indir_table_uninit:
 727         if (((uint32_t)mq_mode & ETH_MQ_RX_RSS_FLAG)) {
 728                 ret1 = hns3_rss_reset_indir_table(hw);
 729                 if (ret1 != 0)
 730                         return ret;
 731         }
 732
 733 rss_tuple_uninit:
 734         hns3_rss_tuple_uninit(hw);
 735
 736         /* Disable RSS */
 737         hw->rss_info.conf.types = 0;
 738
 739         return ret;
 740 }
 741
 742 /*
 743  * RSS uninitialization for hns3 pmd driver.
 744  */
 745 void
 746 hns3_rss_uninit(struct hns3_adapter *hns)
 747 {
 748         struct hns3_hw *hw = &hns->hw;
 749         int ret;
 750
 751         hns3_rss_tuple_uninit(hw);
 752         ret = hns3_rss_reset_indir_table(hw);
 753         if (ret != 0)
 754                 return;
 755
 756         /* Disable RSS */
 757         hw->rss_info.conf.types = 0;
 758 }