drivers/net/hns3/hns3_fdir.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_driver.h>
   7 #include <rte_hash.h>
   8 #include <rte_hash_crc.h>
   9 #include <rte_io.h>
  10 #include <rte_malloc.h>
  11
  12 #include "hns3_ethdev.h"
  13 #include "hns3_logs.h"
  14
  15 #define HNS3_VLAN_TAG_TYPE_NONE         0
  16 #define HNS3_VLAN_TAG_TYPE_TAG2         1
  17 #define HNS3_VLAN_TAG_TYPE_TAG1         2
  18 #define HNS3_VLAN_TAG_TYPE_TAG1_2       3
  19
  20 #define HNS3_PF_ID_S                    0
  21 #define HNS3_PF_ID_M                    GENMASK(2, 0)
  22 #define HNS3_VF_ID_S                    3
  23 #define HNS3_VF_ID_M                    GENMASK(10, 3)
  24 #define HNS3_PORT_TYPE_B                11
  25 #define HNS3_NETWORK_PORT_ID_S          0
  26 #define HNS3_NETWORK_PORT_ID_M          GENMASK(3, 0)
  27
  28 #define HNS3_FD_EPORT_SW_EN_B           0
  29
  30 #define HNS3_FD_AD_DATA_S               32
  31 #define HNS3_FD_AD_DROP_B               0
  32 #define HNS3_FD_AD_DIRECT_QID_B 1
  33 #define HNS3_FD_AD_QID_S                2
  34 #define HNS3_FD_AD_QID_M                GENMASK(12, 2)
  35 #define HNS3_FD_AD_USE_COUNTER_B        12
  36 #define HNS3_FD_AD_COUNTER_NUM_S        13
  37 #define HNS3_FD_AD_COUNTER_NUM_M        GENMASK(20, 13)
  38 #define HNS3_FD_AD_NXT_STEP_B           20
  39 #define HNS3_FD_AD_NXT_KEY_S            21
  40 #define HNS3_FD_AD_NXT_KEY_M            GENMASK(26, 21)
  41 #define HNS3_FD_AD_WR_RULE_ID_B 0
  42 #define HNS3_FD_AD_RULE_ID_S            1
  43 #define HNS3_FD_AD_RULE_ID_M            GENMASK(13, 1)
  44 #define HNS3_FD_AD_COUNTER_HIGH_BIT     7
  45 #define HNS3_FD_AD_COUNTER_HIGH_BIT_B   26
  46
  47 enum HNS3_PORT_TYPE {
  48         HOST_PORT,
  49         NETWORK_PORT
  50 };
  51
  52 enum HNS3_FD_MODE {
  53         HNS3_FD_MODE_DEPTH_2K_WIDTH_400B_STAGE_1,
  54         HNS3_FD_MODE_DEPTH_1K_WIDTH_400B_STAGE_2,
  55         HNS3_FD_MODE_DEPTH_4K_WIDTH_200B_STAGE_1,
  56         HNS3_FD_MODE_DEPTH_2K_WIDTH_200B_STAGE_2,
  57 };
  58
  59 enum HNS3_FD_KEY_TYPE {
  60         HNS3_FD_KEY_BASE_ON_PTYPE,
  61         HNS3_FD_KEY_BASE_ON_TUPLE,
  62 };
  63
  64 enum HNS3_FD_META_DATA {
  65         PACKET_TYPE_ID,
  66         IP_FRAGEMENT,
  67         ROCE_TYPE,
  68         NEXT_KEY,
  69         VLAN_NUMBER,
  70         SRC_VPORT,
  71         DST_VPORT,
  72         TUNNEL_PACKET,
  73         MAX_META_DATA,
  74 };
  75
  76 struct key_info {
  77         uint8_t key_type;
  78         uint8_t key_length;
  79 };
  80
  81 static const struct key_info meta_data_key_info[] = {
  82         {PACKET_TYPE_ID, 6},
  83         {IP_FRAGEMENT, 1},
  84         {ROCE_TYPE, 1},
  85         {NEXT_KEY, 5},
  86         {VLAN_NUMBER, 2},
  87         {SRC_VPORT, 12},
  88         {DST_VPORT, 12},
  89         {TUNNEL_PACKET, 1},
  90 };
  91
  92 static const struct key_info tuple_key_info[] = {
  93         {OUTER_DST_MAC, 48},
  94         {OUTER_SRC_MAC, 48},
  95         {OUTER_VLAN_TAG_FST, 16},
  96         {OUTER_VLAN_TAG_SEC, 16},
  97         {OUTER_ETH_TYPE, 16},
  98         {OUTER_L2_RSV, 16},
  99         {OUTER_IP_TOS, 8},
 100         {OUTER_IP_PROTO, 8},
 101         {OUTER_SRC_IP, 32},
 102         {OUTER_DST_IP, 32},
 103         {OUTER_L3_RSV, 16},
 104         {OUTER_SRC_PORT, 16},
 105         {OUTER_DST_PORT, 16},
 106         {OUTER_L4_RSV, 32},
 107         {OUTER_TUN_VNI, 24},
 108         {OUTER_TUN_FLOW_ID, 8},
 109         {INNER_DST_MAC, 48},
 110         {INNER_SRC_MAC, 48},
 111         {INNER_VLAN_TAG1, 16},
 112         {INNER_VLAN_TAG2, 16},
 113         {INNER_ETH_TYPE, 16},
 114         {INNER_L2_RSV, 16},
 115         {INNER_IP_TOS, 8},
 116         {INNER_IP_PROTO, 8},
 117         {INNER_SRC_IP, 32},
 118         {INNER_DST_IP, 32},
 119         {INNER_L3_RSV, 16},
 120         {INNER_SRC_PORT, 16},
 121         {INNER_DST_PORT, 16},
 122         {INNER_SCTP_TAG, 32},
 123 };
 124
 125 #define HNS3_BITS_PER_BYTE      8
 126 #define MAX_KEY_LENGTH          400
 127 #define MAX_200B_KEY_LENGTH     200
 128 #define MAX_META_DATA_LENGTH    16
 129 #define MAX_KEY_DWORDS  DIV_ROUND_UP(MAX_KEY_LENGTH / HNS3_BITS_PER_BYTE, 4)
 130 #define MAX_KEY_BYTES   (MAX_KEY_DWORDS * 4)
 131
 132 enum HNS3_FD_PACKET_TYPE {
 133         NIC_PACKET,
 134         ROCE_PACKET,
 135 };
 136
 137 /* For each bit of TCAM entry, it uses a pair of 'x' and
 138  * 'y' to indicate which value to match, like below:
 139  * ----------------------------------
 140  * | bit x | bit y |  search value  |
 141  * ----------------------------------
 142  * |   0   |   0   |   always hit   |
 143  * ----------------------------------
 144  * |   1   |   0   |   match '0'    |
 145  * ----------------------------------
 146  * |   0   |   1   |   match '1'    |
 147  * ----------------------------------
 148  * |   1   |   1   |   invalid      |
 149  * ----------------------------------
 150  * Then for input key(k) and mask(v), we can calculate the value by
 151  * the formulae:
 152  *      x = (~k) & v
 153  *      y = k & v
 154  */
 155 #define calc_x(x, k, v) ((x) = (~(k) & (v)))
 156 #define calc_y(y, k, v) ((y) = ((k) & (v)))
 157
 158 struct hns3_fd_tcam_config_1_cmd {
 159         uint8_t stage;
 160         uint8_t xy_sel;
 161         uint8_t port_info;
 162         uint8_t rsv1[1];
 163         rte_le32_t index;
 164         uint8_t entry_vld;
 165         uint8_t rsv2[7];
 166         uint8_t tcam_data[8];
 167 };
 168
 169 struct hns3_fd_tcam_config_2_cmd {
 170         uint8_t tcam_data[24];
 171 };
 172
 173 struct hns3_fd_tcam_config_3_cmd {
 174         uint8_t tcam_data[20];
 175         uint8_t rsv[4];
 176 };
 177
 178 struct hns3_get_fd_mode_cmd {
 179         uint8_t mode;
 180         uint8_t enable;
 181         uint8_t rsv[22];
 182 };
 183
 184 struct hns3_get_fd_allocation_cmd {
 185         rte_le32_t stage1_entry_num;
 186         rte_le32_t stage2_entry_num;
 187         rte_le16_t stage1_counter_num;
 188         rte_le16_t stage2_counter_num;
 189         uint8_t rsv[12];
 190 };
 191
 192 struct hns3_set_fd_key_config_cmd {
 193         uint8_t stage;
 194         uint8_t key_select;
 195         uint8_t inner_sipv6_word_en;
 196         uint8_t inner_dipv6_word_en;
 197         uint8_t outer_sipv6_word_en;
 198         uint8_t outer_dipv6_word_en;
 199         uint8_t rsv1[2];
 200         rte_le32_t tuple_mask;
 201         rte_le32_t meta_data_mask;
 202         uint8_t rsv2[8];
 203 };
 204
 205 struct hns3_fd_ad_config_cmd {
 206         uint8_t stage;
 207         uint8_t rsv1[3];
 208         rte_le32_t index;
 209         rte_le64_t ad_data;
 210         uint8_t rsv2[8];
 211 };
 212
 213 struct hns3_fd_get_cnt_cmd {
 214         uint8_t stage;
 215         uint8_t rsv1[3];
 216         rte_le16_t index;
 217         uint8_t rsv2[2];
 218         rte_le64_t value;
 219         uint8_t rsv3[8];
 220 };
 221
 222 static int hns3_get_fd_mode(struct hns3_hw *hw, uint8_t *fd_mode)
 223 {
 224         struct hns3_get_fd_mode_cmd *req;
 225         struct hns3_cmd_desc desc;
 226         int ret;
 227
 228         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_FD_MODE_CTRL, true);
 229
 230         req = (struct hns3_get_fd_mode_cmd *)desc.data;
 231
 232         ret = hns3_cmd_send(hw, &desc, 1);
 233         if (ret) {
 234                 hns3_err(hw, "Get fd mode fail, ret=%d", ret);
 235                 return ret;
 236         }
 237
 238         *fd_mode = req->mode;
 239
 240         return ret;
 241 }
 242
 243 static int hns3_get_fd_allocation(struct hns3_hw *hw,
 244                                   uint32_t *stage1_entry_num,
 245                                   uint32_t *stage2_entry_num,
 246                                   uint16_t *stage1_counter_num,
 247                                   uint16_t *stage2_counter_num)
 248 {
 249         struct hns3_get_fd_allocation_cmd *req;
 250         struct hns3_cmd_desc desc;
 251         int ret;
 252
 253         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_FD_GET_ALLOCATION, true);
 254
 255         req = (struct hns3_get_fd_allocation_cmd *)desc.data;
 256
 257         ret = hns3_cmd_send(hw, &desc, 1);
 258         if (ret) {
 259                 hns3_err(hw, "Query fd allocation fail, ret=%d", ret);
 260                 return ret;
 261         }
 262
 263         *stage1_entry_num = rte_le_to_cpu_32(req->stage1_entry_num);
 264         *stage2_entry_num = rte_le_to_cpu_32(req->stage2_entry_num);
 265         *stage1_counter_num = rte_le_to_cpu_16(req->stage1_counter_num);
 266         *stage2_counter_num = rte_le_to_cpu_16(req->stage2_counter_num);
 267
 268         return ret;
 269 }
 270
 271 static int hns3_set_fd_key_config(struct hns3_adapter *hns)
 272 {
 273         struct hns3_set_fd_key_config_cmd *req;
 274         struct hns3_fd_key_cfg *key_cfg;
 275         struct hns3_pf *pf = &hns->pf;
 276         struct hns3_hw *hw = &hns->hw;
 277         struct hns3_cmd_desc desc;
 278         int ret;
 279
 280         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_FD_KEY_CONFIG, false);
 281
 282         req = (struct hns3_set_fd_key_config_cmd *)desc.data;
 283         key_cfg = &pf->fdir.fd_cfg.key_cfg[HNS3_FD_STAGE_1];
 284         req->stage = HNS3_FD_STAGE_1;
 285         req->key_select = key_cfg->key_sel;
 286         req->inner_sipv6_word_en = key_cfg->inner_sipv6_word_en;
 287         req->inner_dipv6_word_en = key_cfg->inner_dipv6_word_en;
 288         req->outer_sipv6_word_en = key_cfg->outer_sipv6_word_en;
 289         req->outer_dipv6_word_en = key_cfg->outer_dipv6_word_en;
 290         req->tuple_mask = rte_cpu_to_le_32(~key_cfg->tuple_active);
 291         req->meta_data_mask = rte_cpu_to_le_32(~key_cfg->meta_data_active);
 292
 293         ret = hns3_cmd_send(hw, &desc, 1);
 294         if (ret)
 295                 hns3_err(hw, "Set fd key fail, ret=%d", ret);
 296
 297         return ret;
 298 }
 299
 300 int hns3_init_fd_config(struct hns3_adapter *hns)
 301 {
 302         struct hns3_pf *pf = &hns->pf;
 303         struct hns3_hw *hw = &hns->hw;
 304         struct hns3_fd_key_cfg *key_cfg;
 305         int ret;
 306
 307         ret = hns3_get_fd_mode(hw, &pf->fdir.fd_cfg.fd_mode);
 308         if (ret)
 309                 return ret;
 310
 311         switch (pf->fdir.fd_cfg.fd_mode) {
 312         case HNS3_FD_MODE_DEPTH_2K_WIDTH_400B_STAGE_1:
 313                 pf->fdir.fd_cfg.max_key_length = MAX_KEY_LENGTH;
 314                 break;
 315         case HNS3_FD_MODE_DEPTH_4K_WIDTH_200B_STAGE_1:
 316                 pf->fdir.fd_cfg.max_key_length = MAX_200B_KEY_LENGTH;
 317                 hns3_warn(hw, "Unsupported tunnel filter in 4K*200Bit");
 318                 break;
 319         default:
 320                 hns3_err(hw, "Unsupported flow director mode %d",
 321                             pf->fdir.fd_cfg.fd_mode);
 322                 return -EOPNOTSUPP;
 323         }
 324
 325         key_cfg = &pf->fdir.fd_cfg.key_cfg[HNS3_FD_STAGE_1];
 326         key_cfg->key_sel = HNS3_FD_KEY_BASE_ON_TUPLE;
 327         key_cfg->inner_sipv6_word_en = IPV6_ADDR_WORD_MASK;
 328         key_cfg->inner_dipv6_word_en = IPV6_ADDR_WORD_MASK;
 329         key_cfg->outer_sipv6_word_en = 0;
 330         key_cfg->outer_dipv6_word_en = 0;
 331
 332         key_cfg->tuple_active = BIT(INNER_VLAN_TAG1) | BIT(INNER_ETH_TYPE) |
 333             BIT(INNER_IP_PROTO) | BIT(INNER_IP_TOS) |
 334             BIT(INNER_SRC_IP) | BIT(INNER_DST_IP) |
 335             BIT(INNER_SRC_PORT) | BIT(INNER_DST_PORT);
 336
 337         /* If use max 400bit key, we can support tuples for ether type */
 338         if (pf->fdir.fd_cfg.max_key_length == MAX_KEY_LENGTH) {
 339                 key_cfg->tuple_active |=
 340                     BIT(INNER_DST_MAC) | BIT(INNER_SRC_MAC) |
 341                     BIT(OUTER_SRC_PORT) | BIT(INNER_SCTP_TAG) |
 342                     BIT(OUTER_DST_PORT) | BIT(INNER_VLAN_TAG2) |
 343                     BIT(OUTER_TUN_VNI) | BIT(OUTER_TUN_FLOW_ID) |
 344                     BIT(OUTER_ETH_TYPE) | BIT(OUTER_IP_PROTO);
 345         }
 346
 347         /* roce_type is used to filter roce frames
 348          * dst_vport is used to specify the rule
 349          */
 350         key_cfg->meta_data_active = BIT(DST_VPORT) | BIT(TUNNEL_PACKET) |
 351             BIT(VLAN_NUMBER);
 352
 353         ret = hns3_get_fd_allocation(hw,
 354                                      &pf->fdir.fd_cfg.rule_num[HNS3_FD_STAGE_1],
 355                                      &pf->fdir.fd_cfg.rule_num[HNS3_FD_STAGE_2],
 356                                      &pf->fdir.fd_cfg.cnt_num[HNS3_FD_STAGE_1],
 357                                      &pf->fdir.fd_cfg.cnt_num[HNS3_FD_STAGE_2]);
 358         if (ret)
 359                 return ret;
 360
 361         return hns3_set_fd_key_config(hns);
 362 }
 363
 364 static int hns3_fd_tcam_config(struct hns3_hw *hw, bool sel_x, int loc,
 365                                uint8_t *key, bool is_add)
 366 {
 367 #define FD_TCAM_CMD_NUM 3
 368         struct hns3_fd_tcam_config_1_cmd *req1;
 369         struct hns3_fd_tcam_config_2_cmd *req2;
 370         struct hns3_fd_tcam_config_3_cmd *req3;
 371         struct hns3_cmd_desc desc[FD_TCAM_CMD_NUM];
 372         int len;
 373         int ret;
 374
 375         hns3_cmd_setup_basic_desc(&desc[0], HNS3_OPC_FD_TCAM_OP, false);
 376         desc[0].flag |= rte_cpu_to_le_16(HNS3_CMD_FLAG_NEXT);
 377         hns3_cmd_setup_basic_desc(&desc[1], HNS3_OPC_FD_TCAM_OP, false);
 378         desc[1].flag |= rte_cpu_to_le_16(HNS3_CMD_FLAG_NEXT);
 379         hns3_cmd_setup_basic_desc(&desc[2], HNS3_OPC_FD_TCAM_OP, false);
 380
 381         req1 = (struct hns3_fd_tcam_config_1_cmd *)desc[0].data;
 382         req2 = (struct hns3_fd_tcam_config_2_cmd *)desc[1].data;
 383         req3 = (struct hns3_fd_tcam_config_3_cmd *)desc[2].data;
 384
 385         req1->stage = HNS3_FD_STAGE_1;
 386         req1->xy_sel = sel_x ? 1 : 0;
 387         hns3_set_bit(req1->port_info, HNS3_FD_EPORT_SW_EN_B, 0);
 388         req1->index = rte_cpu_to_le_32(loc);
 389         req1->entry_vld = sel_x ? is_add : 0;
 390
 391         if (key) {
 392                 len = sizeof(req1->tcam_data);
 393                 memcpy(req1->tcam_data, key, len);
 394                 key += len;
 395
 396                 len = sizeof(req2->tcam_data);
 397                 memcpy(req2->tcam_data, key, len);
 398                 key += len;
 399
 400                 len = sizeof(req3->tcam_data);
 401                 memcpy(req3->tcam_data, key, len);
 402         }
 403
 404         ret = hns3_cmd_send(hw, desc, FD_TCAM_CMD_NUM);
 405         if (ret)
 406                 hns3_err(hw, "Config tcam key fail, ret=%d loc=%d add=%d",
 407                             ret, loc, is_add);
 408         return ret;
 409 }
 410
 411 static int hns3_fd_ad_config(struct hns3_hw *hw, int loc,
 412                              struct hns3_fd_ad_data *action)
 413 {
 414         struct hns3_fd_ad_config_cmd *req;
 415         struct hns3_cmd_desc desc;
 416         uint64_t ad_data = 0;
 417         int ret;
 418
 419         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_FD_AD_OP, false);
 420
 421         req = (struct hns3_fd_ad_config_cmd *)desc.data;
 422         req->index = rte_cpu_to_le_32(loc);
 423         req->stage = HNS3_FD_STAGE_1;
 424
 425         hns3_set_bit(ad_data, HNS3_FD_AD_WR_RULE_ID_B,
 426                      action->write_rule_id_to_bd);
 427         hns3_set_field(ad_data, HNS3_FD_AD_RULE_ID_M, HNS3_FD_AD_RULE_ID_S,
 428                        action->rule_id);
 429         /* set extend bit if counter_id is in [128 ~ 255] */
 430         if (action->counter_id & BIT(HNS3_FD_AD_COUNTER_HIGH_BIT))
 431                 hns3_set_bit(ad_data, HNS3_FD_AD_COUNTER_HIGH_BIT_B, 1);
 432         ad_data <<= HNS3_FD_AD_DATA_S;
 433         hns3_set_bit(ad_data, HNS3_FD_AD_DROP_B, action->drop_packet);
 434         hns3_set_bit(ad_data, HNS3_FD_AD_DIRECT_QID_B,
 435                      action->forward_to_direct_queue);
 436         hns3_set_field(ad_data, HNS3_FD_AD_QID_M, HNS3_FD_AD_QID_S,
 437                        action->queue_id);
 438         hns3_set_bit(ad_data, HNS3_FD_AD_USE_COUNTER_B, action->use_counter);
 439         hns3_set_field(ad_data, HNS3_FD_AD_COUNTER_NUM_M,
 440                        HNS3_FD_AD_COUNTER_NUM_S, action->counter_id);
 441         hns3_set_bit(ad_data, HNS3_FD_AD_NXT_STEP_B, action->use_next_stage);
 442         hns3_set_field(ad_data, HNS3_FD_AD_NXT_KEY_M, HNS3_FD_AD_NXT_KEY_S,
 443                        action->counter_id);
 444
 445         req->ad_data = rte_cpu_to_le_64(ad_data);
 446         ret = hns3_cmd_send(hw, &desc, 1);
 447         if (ret)
 448                 hns3_err(hw, "Config fd ad fail, ret=%d loc=%d", ret, loc);
 449
 450         return ret;
 451 }
 452
 453 static inline void hns3_fd_convert_mac(uint8_t *key, uint8_t *mask,
 454                                        uint8_t *mac_x, uint8_t *mac_y)
 455 {
 456         uint8_t tmp;
 457         int i;
 458
 459         for (i = 0; i < RTE_ETHER_ADDR_LEN; i++) {
 460                 tmp = RTE_ETHER_ADDR_LEN - 1 - i;
 461                 calc_x(mac_x[tmp], key[i], mask[i]);
 462                 calc_y(mac_y[tmp], key[i], mask[i]);
 463         }
 464 }
 465
 466 static void hns3_fd_convert_int16(uint32_t tuple, struct hns3_fdir_rule *rule,
 467                                   uint8_t *val_x, uint8_t *val_y)
 468 {
 469         uint16_t tmp_x_s;
 470         uint16_t tmp_y_s;
 471         uint16_t mask;
 472         uint16_t key;
 473
 474         switch (tuple) {
 475         case OUTER_SRC_PORT:
 476                 key = rule->key_conf.spec.outer_src_port;
 477                 mask = rule->key_conf.mask.outer_src_port;
 478                 break;
 479         case OUTER_DST_PORT:
 480                 key = rule->key_conf.spec.tunnel_type;
 481                 mask = rule->key_conf.mask.tunnel_type;
 482                 break;
 483         case OUTER_ETH_TYPE:
 484                 key = rule->key_conf.spec.outer_ether_type;
 485                 mask = rule->key_conf.mask.outer_ether_type;
 486                 break;
 487         case INNER_SRC_PORT:
 488                 key = rule->key_conf.spec.src_port;
 489                 mask = rule->key_conf.mask.src_port;
 490                 break;
 491         case INNER_DST_PORT:
 492                 key = rule->key_conf.spec.dst_port;
 493                 mask = rule->key_conf.mask.dst_port;
 494                 break;
 495         case INNER_VLAN_TAG1:
 496                 key = rule->key_conf.spec.vlan_tag1;
 497                 mask = rule->key_conf.mask.vlan_tag1;
 498                 break;
 499         case INNER_VLAN_TAG2:
 500                 key = rule->key_conf.spec.vlan_tag2;
 501                 mask = rule->key_conf.mask.vlan_tag2;
 502                 break;
 503         default:
 504                 /*  INNER_ETH_TYPE: */
 505                 key = rule->key_conf.spec.ether_type;
 506                 mask = rule->key_conf.mask.ether_type;
 507                 break;
 508         }
 509         calc_x(tmp_x_s, key, mask);
 510         calc_y(tmp_y_s, key, mask);
 511         val_x[0] = rte_cpu_to_le_16(tmp_x_s) & 0xFF;
 512         val_x[1] = rte_cpu_to_le_16(tmp_x_s) >> HNS3_BITS_PER_BYTE;
 513         val_y[0] = rte_cpu_to_le_16(tmp_y_s) & 0xFF;
 514         val_y[1] = rte_cpu_to_le_16(tmp_y_s) >> HNS3_BITS_PER_BYTE;
 515 }
 516
 517 static inline void hns3_fd_convert_int32(uint32_t key, uint32_t mask,
 518                                          uint8_t *val_x, uint8_t *val_y)
 519 {
 520         uint32_t tmp_x_l;
 521         uint32_t tmp_y_l;
 522
 523         calc_x(tmp_x_l, key, mask);
 524         calc_y(tmp_y_l, key, mask);
 525         memcpy(val_x, &tmp_x_l, sizeof(tmp_x_l));
 526         memcpy(val_y, &tmp_y_l, sizeof(tmp_y_l));
 527 }
 528
 529 static bool hns3_fd_convert_tuple(uint32_t tuple, uint8_t *key_x,
 530                                   uint8_t *key_y, struct hns3_fdir_rule *rule)
 531 {
 532         struct hns3_fdir_key_conf *key_conf;
 533         int tmp;
 534         int i;
 535
 536         if ((rule->input_set & BIT(tuple)) == 0)
 537                 return true;
 538
 539         key_conf = &rule->key_conf;
 540         switch (tuple) {
 541         case INNER_DST_MAC:
 542                 hns3_fd_convert_mac(key_conf->spec.dst_mac,
 543                                     key_conf->mask.dst_mac, key_x, key_y);
 544                 break;
 545         case INNER_SRC_MAC:
 546                 hns3_fd_convert_mac(key_conf->spec.src_mac,
 547                                     key_conf->mask.src_mac, key_x, key_y);
 548                 break;
 549         case OUTER_SRC_PORT:
 550         case OUTER_DST_PORT:
 551         case OUTER_ETH_TYPE:
 552         case INNER_SRC_PORT:
 553         case INNER_DST_PORT:
 554         case INNER_VLAN_TAG1:
 555         case INNER_VLAN_TAG2:
 556         case INNER_ETH_TYPE:
 557                 hns3_fd_convert_int16(tuple, rule, key_x, key_y);
 558                 break;
 559         case INNER_SRC_IP:
 560                 hns3_fd_convert_int32(key_conf->spec.src_ip[IP_ADDR_KEY_ID],
 561                                       key_conf->mask.src_ip[IP_ADDR_KEY_ID],
 562                                       key_x, key_y);
 563                 break;
 564         case INNER_DST_IP:
 565                 hns3_fd_convert_int32(key_conf->spec.dst_ip[IP_ADDR_KEY_ID],
 566                                       key_conf->mask.dst_ip[IP_ADDR_KEY_ID],
 567                                       key_x, key_y);
 568                 break;
 569         case INNER_SCTP_TAG:
 570                 hns3_fd_convert_int32(key_conf->spec.sctp_tag,
 571                                       key_conf->mask.sctp_tag, key_x, key_y);
 572                 break;
 573         case OUTER_TUN_VNI:
 574                 for (i = 0; i < VNI_OR_TNI_LEN; i++) {
 575                         tmp = VNI_OR_TNI_LEN - 1 - i;
 576                         calc_x(key_x[tmp],
 577                                key_conf->spec.outer_tun_vni[i],
 578                                key_conf->mask.outer_tun_vni[i]);
 579                         calc_y(key_y[tmp],
 580                                key_conf->spec.outer_tun_vni[i],
 581                                key_conf->mask.outer_tun_vni[i]);
 582                 }
 583                 break;
 584         case OUTER_TUN_FLOW_ID:
 585                 calc_x(*key_x, key_conf->spec.outer_tun_flow_id,
 586                        key_conf->mask.outer_tun_flow_id);
 587                 calc_y(*key_y, key_conf->spec.outer_tun_flow_id,
 588                        key_conf->mask.outer_tun_flow_id);
 589                 break;
 590         case INNER_IP_TOS:
 591                 calc_x(*key_x, key_conf->spec.ip_tos, key_conf->mask.ip_tos);
 592                 calc_y(*key_y, key_conf->spec.ip_tos, key_conf->mask.ip_tos);
 593                 break;
 594         case OUTER_IP_PROTO:
 595                 calc_x(*key_x, key_conf->spec.outer_proto,
 596                        key_conf->mask.outer_proto);
 597                 calc_y(*key_y, key_conf->spec.outer_proto,
 598                        key_conf->mask.outer_proto);
 599                 break;
 600         case INNER_IP_PROTO:
 601                 calc_x(*key_x, key_conf->spec.ip_proto,
 602                        key_conf->mask.ip_proto);
 603                 calc_y(*key_y, key_conf->spec.ip_proto,
 604                        key_conf->mask.ip_proto);
 605                 break;
 606         }
 607         return true;
 608 }
 609
 610 static uint32_t hns3_get_port_number(uint8_t pf_id, uint8_t vf_id)
 611 {
 612         uint32_t port_number = 0;
 613
 614         hns3_set_field(port_number, HNS3_PF_ID_M, HNS3_PF_ID_S, pf_id);
 615         hns3_set_field(port_number, HNS3_VF_ID_M, HNS3_VF_ID_S, vf_id);
 616         hns3_set_bit(port_number, HNS3_PORT_TYPE_B, HOST_PORT);
 617
 618         return port_number;
 619 }
 620
 621 static void hns3_fd_convert_meta_data(struct hns3_fd_key_cfg *cfg,
 622                                       uint8_t vf_id,
 623                                       struct hns3_fdir_rule *rule,
 624                                       uint8_t *key_x, uint8_t *key_y)
 625 {
 626         uint16_t meta_data = 0;
 627         uint32_t port_number;
 628         uint8_t cur_pos = 0;
 629         uint8_t tuple_size;
 630         uint8_t shift_bits;
 631         uint32_t tmp_x;
 632         uint32_t tmp_y;
 633         uint8_t i;
 634
 635         for (i = 0; i < MAX_META_DATA; i++) {
 636                 if ((cfg->meta_data_active & BIT(i)) == 0)
 637                         continue;
 638
 639                 tuple_size = meta_data_key_info[i].key_length;
 640                 if (i == TUNNEL_PACKET) {
 641                         hns3_set_bit(meta_data, cur_pos,
 642                                      rule->key_conf.spec.tunnel_type ? 1 : 0);
 643                         cur_pos += tuple_size;
 644                 } else if (i == VLAN_NUMBER) {
 645                         uint32_t vlan_tag;
 646                         uint8_t vlan_num;
 647                         if (rule->key_conf.spec.tunnel_type == 0)
 648                                 vlan_num = rule->key_conf.vlan_num;
 649                         else
 650                                 vlan_num = rule->key_conf.outer_vlan_num;
 651                         if (vlan_num == 1)
 652                                 vlan_tag = HNS3_VLAN_TAG_TYPE_TAG1;
 653                         else if (vlan_num == VLAN_TAG_NUM_MAX)
 654                                 vlan_tag = HNS3_VLAN_TAG_TYPE_TAG1_2;
 655                         else
 656                                 vlan_tag = HNS3_VLAN_TAG_TYPE_NONE;
 657                         hns3_set_field(meta_data,
 658                                        GENMASK(cur_pos + tuple_size,
 659                                                cur_pos), cur_pos, vlan_tag);
 660                         cur_pos += tuple_size;
 661                 } else if (i == DST_VPORT) {
 662                         port_number = hns3_get_port_number(0, vf_id);
 663                         hns3_set_field(meta_data,
 664                                        GENMASK(cur_pos + tuple_size, cur_pos),
 665                                        cur_pos, port_number);
 666                         cur_pos += tuple_size;
 667                 }
 668         }
 669
 670         calc_x(tmp_x, meta_data, 0xFFFF);
 671         calc_y(tmp_y, meta_data, 0xFFFF);
 672         shift_bits = sizeof(meta_data) * HNS3_BITS_PER_BYTE - cur_pos;
 673
 674         tmp_x = rte_cpu_to_le_32(tmp_x << shift_bits);
 675         tmp_y = rte_cpu_to_le_32(tmp_y << shift_bits);
 676         key_x[0] = tmp_x & 0xFF;
 677         key_x[1] = (tmp_x >> HNS3_BITS_PER_BYTE) & 0xFF;
 678         key_y[0] = tmp_y & 0xFF;
 679         key_y[1] = (tmp_y >> HNS3_BITS_PER_BYTE) & 0xFF;
 680 }
 681
 682 /* A complete key is combined with meta data key and tuple key.
 683  * Meta data key is stored at the MSB region, and tuple key is stored at
 684  * the LSB region, unused bits will be filled 0.
 685  */
 686 static int hns3_config_key(struct hns3_adapter *hns,
 687                            struct hns3_fdir_rule *rule)
 688 {
 689         struct hns3_pf *pf = &hns->pf;
 690         struct hns3_hw *hw = &hns->hw;
 691         struct hns3_fd_key_cfg *key_cfg;
 692         uint8_t *cur_key_x;
 693         uint8_t *cur_key_y;
 694         uint8_t key_x[MAX_KEY_BYTES] __rte_aligned(4);
 695         uint8_t key_y[MAX_KEY_BYTES] __rte_aligned(4);
 696         uint8_t vf_id = rule->vf_id;
 697         uint8_t meta_data_region;
 698         uint8_t tuple_size;
 699         uint8_t i;
 700         int ret;
 701
 702         memset(key_x, 0, sizeof(key_x));
 703         memset(key_y, 0, sizeof(key_y));
 704         cur_key_x = key_x;
 705         cur_key_y = key_y;
 706
 707         key_cfg = &pf->fdir.fd_cfg.key_cfg[HNS3_FD_STAGE_1];
 708         for (i = 0; i < MAX_TUPLE; i++) {
 709                 bool tuple_valid;
 710
 711                 tuple_size = tuple_key_info[i].key_length / HNS3_BITS_PER_BYTE;
 712                 if (key_cfg->tuple_active & BIT(i)) {
 713                         tuple_valid = hns3_fd_convert_tuple(i, cur_key_x,
 714                                                             cur_key_y, rule);
 715                         if (tuple_valid) {
 716                                 cur_key_x += tuple_size;
 717                                 cur_key_y += tuple_size;
 718                         }
 719                 }
 720         }
 721
 722         meta_data_region = pf->fdir.fd_cfg.max_key_length / HNS3_BITS_PER_BYTE -
 723             MAX_META_DATA_LENGTH / HNS3_BITS_PER_BYTE;
 724
 725         hns3_fd_convert_meta_data(key_cfg, vf_id, rule,
 726                                   key_x + meta_data_region,
 727                                   key_y + meta_data_region);
 728
 729         ret = hns3_fd_tcam_config(hw, false, rule->location, key_y, true);
 730         if (ret) {
 731                 hns3_err(hw, "Config fd key_y fail, loc=%d, ret=%d",
 732                             rule->queue_id, ret);
 733                 return ret;
 734         }
 735
 736         ret = hns3_fd_tcam_config(hw, true, rule->location, key_x, true);
 737         if (ret)
 738                 hns3_err(hw, "Config fd key_x fail, loc=%d, ret=%d",
 739                             rule->queue_id, ret);
 740         return ret;
 741 }
 742
 743 static int hns3_config_action(struct hns3_hw *hw, struct hns3_fdir_rule *rule)
 744 {
 745         struct hns3_fd_ad_data ad_data;
 746
 747         ad_data.ad_id = rule->location;
 748
 749         if (rule->action == HNS3_FD_ACTION_DROP_PACKET) {
 750                 ad_data.drop_packet = true;
 751                 ad_data.forward_to_direct_queue = false;
 752                 ad_data.queue_id = 0;
 753         } else {
 754                 ad_data.drop_packet = false;
 755                 ad_data.forward_to_direct_queue = true;
 756                 ad_data.queue_id = rule->queue_id;
 757         }
 758
 759         if (unlikely(rule->flags & HNS3_RULE_FLAG_COUNTER)) {
 760                 ad_data.use_counter = true;
 761                 ad_data.counter_id = rule->act_cnt.id;
 762         } else {
 763                 ad_data.use_counter = false;
 764                 ad_data.counter_id = 0;
 765         }
 766
 767         if (unlikely(rule->flags & HNS3_RULE_FLAG_FDID))
 768                 ad_data.rule_id = rule->fd_id;
 769         else
 770                 ad_data.rule_id = rule->location;
 771
 772         ad_data.use_next_stage = false;
 773         ad_data.next_input_key = 0;
 774
 775         ad_data.write_rule_id_to_bd = true;
 776
 777         return hns3_fd_ad_config(hw, ad_data.ad_id, &ad_data);
 778 }
 779
 780 static int hns3_fd_clear_all_rules(struct hns3_hw *hw, uint32_t rule_num)
 781 {
 782         uint32_t i;
 783         int ret;
 784
 785         for (i = 0; i < rule_num; i++) {
 786                 ret = hns3_fd_tcam_config(hw, true, i, NULL, false);
 787                 if (ret)
 788                         return ret;
 789         }
 790
 791         return 0;
 792 }
 793
 794 int hns3_fdir_filter_init(struct hns3_adapter *hns)
 795 {
 796         struct hns3_pf *pf = &hns->pf;
 797         struct hns3_fdir_info *fdir_info = &pf->fdir;
 798         uint32_t rule_num = fdir_info->fd_cfg.rule_num[HNS3_FD_STAGE_1];
 799         char fdir_hash_name[RTE_HASH_NAMESIZE];
 800         struct rte_hash_parameters fdir_hash_params = {
 801                 .name = fdir_hash_name,
 802                 .entries = rule_num,
 803                 .key_len = sizeof(struct hns3_fdir_key_conf),
 804                 .hash_func = rte_hash_crc,
 805                 .hash_func_init_val = 0,
 806         };
 807         int ret;
 808
 809         ret = hns3_fd_clear_all_rules(&hns->hw, rule_num);
 810         if (ret) {
 811                 PMD_INIT_LOG(ERR, "Clear all fd rules fail! ret = %d", ret);
 812                 return ret;
 813         }
 814
 815         fdir_hash_params.socket_id = rte_socket_id();
 816         TAILQ_INIT(&fdir_info->fdir_list);
 817         rte_spinlock_init(&fdir_info->flows_lock);
 818         snprintf(fdir_hash_name, RTE_HASH_NAMESIZE, "%s", hns->hw.data->name);
 819         fdir_info->hash_handle = rte_hash_create(&fdir_hash_params);
 820         if (fdir_info->hash_handle == NULL) {
 821                 PMD_INIT_LOG(ERR, "Create FDIR hash handle fail!");
 822                 return -EINVAL;
 823         }
 824         fdir_info->hash_map = rte_zmalloc("hns3 FDIR hash",
 825                                           rule_num *
 826                                           sizeof(struct hns3_fdir_rule_ele *),
 827                                           0);
 828         if (fdir_info->hash_map == NULL) {
 829                 PMD_INIT_LOG(ERR, "Allocate memory for FDIR hash map fail!");
 830                 rte_hash_free(fdir_info->hash_handle);
 831                 return -ENOMEM;
 832         }
 833
 834         return 0;
 835 }
 836
 837 void hns3_fdir_filter_uninit(struct hns3_adapter *hns)
 838 {
 839         struct hns3_pf *pf = &hns->pf;
 840         struct hns3_fdir_info *fdir_info = &pf->fdir;
 841         struct hns3_fdir_rule_ele *fdir_filter;
 842
 843         rte_spinlock_lock(&fdir_info->flows_lock);
 844         if (fdir_info->hash_map) {
 845                 rte_free(fdir_info->hash_map);
 846                 fdir_info->hash_map = NULL;
 847         }
 848         if (fdir_info->hash_handle) {
 849                 rte_hash_free(fdir_info->hash_handle);
 850                 fdir_info->hash_handle = NULL;
 851         }
 852         rte_spinlock_unlock(&fdir_info->flows_lock);
 853
 854         fdir_filter = TAILQ_FIRST(&fdir_info->fdir_list);
 855         while (fdir_filter) {
 856                 TAILQ_REMOVE(&fdir_info->fdir_list, fdir_filter, entries);
 857                 hns3_fd_tcam_config(&hns->hw, true,
 858                                     fdir_filter->fdir_conf.location, NULL,
 859                                     false);
 860                 rte_free(fdir_filter);
 861                 fdir_filter = TAILQ_FIRST(&fdir_info->fdir_list);
 862         }
 863 }
 864
 865 /*
 866  * Find a key in the hash table.
 867  * @return
 868  *   - Zero and positive values are key location.
 869  *   - -EINVAL if the parameters are invalid.
 870  *   - -ENOENT if the key is not found.
 871  */
 872 static int hns3_fdir_filter_lookup(struct hns3_fdir_info *fdir_info,
 873                                     struct hns3_fdir_key_conf *key)
 874 {
 875         hash_sig_t sig;
 876         int ret;
 877
 878         rte_spinlock_lock(&fdir_info->flows_lock);
 879         sig = rte_hash_crc(key, sizeof(*key), 0);
 880         ret = rte_hash_lookup_with_hash(fdir_info->hash_handle, key, sig);
 881         rte_spinlock_unlock(&fdir_info->flows_lock);
 882
 883         return ret;
 884 }
 885
 886 static int hns3_insert_fdir_filter(struct hns3_hw *hw,
 887                                    struct hns3_fdir_info *fdir_info,
 888                                    struct hns3_fdir_rule_ele *fdir_filter)
 889 {
 890         struct hns3_fdir_key_conf *key;
 891         hash_sig_t sig;
 892         int ret;
 893
 894         key = &fdir_filter->fdir_conf.key_conf;
 895         rte_spinlock_lock(&fdir_info->flows_lock);
 896         sig = rte_hash_crc(key, sizeof(*key), 0);
 897         ret = rte_hash_add_key_with_hash(fdir_info->hash_handle, key, sig);
 898         if (ret < 0) {
 899                 rte_spinlock_unlock(&fdir_info->flows_lock);
 900                 hns3_err(hw, "Hash table full? err:%d(%s)!", ret,
 901                          strerror(-ret));
 902                 return ret;
 903         }
 904
 905         fdir_info->hash_map[ret] = fdir_filter;
 906         TAILQ_INSERT_TAIL(&fdir_info->fdir_list, fdir_filter, entries);
 907         rte_spinlock_unlock(&fdir_info->flows_lock);
 908
 909         return ret;
 910 }
 911
 912 static int hns3_remove_fdir_filter(struct hns3_hw *hw,
 913                                    struct hns3_fdir_info *fdir_info,
 914                                    struct hns3_fdir_key_conf *key)
 915 {
 916         struct hns3_fdir_rule_ele *fdir_filter;
 917         hash_sig_t sig;
 918         int ret;
 919
 920         rte_spinlock_lock(&fdir_info->flows_lock);
 921         sig = rte_hash_crc(key, sizeof(*key), 0);
 922         ret = rte_hash_del_key_with_hash(fdir_info->hash_handle, key, sig);
 923         if (ret < 0) {
 924                 rte_spinlock_unlock(&fdir_info->flows_lock);
 925                 hns3_err(hw, "Delete hash key fail ret=%d", ret);
 926                 return ret;
 927         }
 928
 929         fdir_filter = fdir_info->hash_map[ret];
 930         fdir_info->hash_map[ret] = NULL;
 931         TAILQ_REMOVE(&fdir_info->fdir_list, fdir_filter, entries);
 932         rte_spinlock_unlock(&fdir_info->flows_lock);
 933
 934         rte_free(fdir_filter);
 935
 936         return 0;
 937 }
 938
 939 int hns3_fdir_filter_program(struct hns3_adapter *hns,
 940                              struct hns3_fdir_rule *rule, bool del)
 941 {
 942         struct hns3_pf *pf = &hns->pf;
 943         struct hns3_fdir_info *fdir_info = &pf->fdir;
 944         struct hns3_fdir_rule_ele *node;
 945         struct hns3_hw *hw = &hns->hw;
 946         int ret;
 947
 948         if (del) {
 949                 ret = hns3_fd_tcam_config(hw, true, rule->location, NULL,
 950                                           false);
 951                 if (ret)
 952                         hns3_err(hw, "Failed to delete fdir: %d src_ip:%x "
 953                                  "dst_ip:%x src_port:%d dst_port:%d ret = %d",
 954                                  rule->location,
 955                                  rule->key_conf.spec.src_ip[IP_ADDR_KEY_ID],
 956                                  rule->key_conf.spec.dst_ip[IP_ADDR_KEY_ID],
 957                                  rule->key_conf.spec.src_port,
 958                                  rule->key_conf.spec.dst_port, ret);
 959                 else
 960                         hns3_remove_fdir_filter(hw, fdir_info, &rule->key_conf);
 961
 962                 return ret;
 963         }
 964
 965         ret = hns3_fdir_filter_lookup(fdir_info, &rule->key_conf);
 966         if (ret >= 0) {
 967                 hns3_err(hw, "Conflict with existing fdir loc: %d", ret);
 968                 return -EINVAL;
 969         }
 970
 971         node = rte_zmalloc("hns3 fdir rule", sizeof(struct hns3_fdir_rule_ele),
 972                            0);
 973         if (node == NULL) {
 974                 hns3_err(hw, "Failed to allocate fdir_rule memory");
 975                 return -ENOMEM;
 976         }
 977
 978         rte_memcpy(&node->fdir_conf, rule, sizeof(struct hns3_fdir_rule));
 979         ret = hns3_insert_fdir_filter(hw, fdir_info, node);
 980         if (ret < 0) {
 981                 rte_free(node);
 982                 return ret;
 983         }
 984         rule->location = ret;
 985         node->fdir_conf.location = ret;
 986
 987         rte_spinlock_lock(&fdir_info->flows_lock);
 988         ret = hns3_config_action(hw, rule);
 989         if (!ret)
 990                 ret = hns3_config_key(hns, rule);
 991         rte_spinlock_unlock(&fdir_info->flows_lock);
 992         if (ret) {
 993                 hns3_err(hw, "Failed to config fdir: %d src_ip:%x dst_ip:%x "
 994                          "src_port:%d dst_port:%d ret = %d",
 995                          rule->location,
 996                          rule->key_conf.spec.src_ip[IP_ADDR_KEY_ID],
 997                          rule->key_conf.spec.dst_ip[IP_ADDR_KEY_ID],
 998                          rule->key_conf.spec.src_port,
 999                          rule->key_conf.spec.dst_port, ret);
1000                 (void)hns3_remove_fdir_filter(hw, fdir_info, &rule->key_conf);
1001         }
1002
1003         return ret;
1004 }
1005
1006 /* remove all the flow director filters */
1007 int hns3_clear_all_fdir_filter(struct hns3_adapter *hns)
1008 {
1009         struct hns3_pf *pf = &hns->pf;
1010         struct hns3_fdir_info *fdir_info = &pf->fdir;
1011         struct hns3_fdir_rule_ele *fdir_filter;
1012         struct hns3_hw *hw = &hns->hw;
1013         int ret = 0;
1014
1015         /* flush flow director */
1016         rte_spinlock_lock(&fdir_info->flows_lock);
1017         rte_hash_reset(fdir_info->hash_handle);
1018         rte_spinlock_unlock(&fdir_info->flows_lock);
1019
1020         fdir_filter = TAILQ_FIRST(&fdir_info->fdir_list);
1021         while (fdir_filter) {
1022                 TAILQ_REMOVE(&fdir_info->fdir_list, fdir_filter, entries);
1023                 ret += hns3_fd_tcam_config(hw, true,
1024                                            fdir_filter->fdir_conf.location,
1025                                            NULL, false);
1026                 rte_free(fdir_filter);
1027                 fdir_filter = TAILQ_FIRST(&fdir_info->fdir_list);
1028         }
1029
1030         if (ret) {
1031                 hns3_err(hw, "Fail to delete FDIR filter, ret = %d", ret);
1032                 ret = -EIO;
1033         }
1034         return ret;
1035 }
1036
1037 int hns3_restore_all_fdir_filter(struct hns3_adapter *hns)
1038 {
1039         struct hns3_pf *pf = &hns->pf;
1040         struct hns3_fdir_info *fdir_info = &pf->fdir;
1041         struct hns3_fdir_rule_ele *fdir_filter;
1042         struct hns3_hw *hw = &hns->hw;
1043         bool err = false;
1044         int ret;
1045
1046         TAILQ_FOREACH(fdir_filter, &fdir_info->fdir_list, entries) {
1047                 ret = hns3_config_action(hw, &fdir_filter->fdir_conf);
1048                 if (!ret)
1049                         ret = hns3_config_key(hns, &fdir_filter->fdir_conf);
1050                 if (ret) {
1051                         err = true;
1052                         if (ret == -EBUSY)
1053                                 break;
1054                 }
1055         }
1056
1057         if (err) {
1058                 hns3_err(hw, "Fail to restore FDIR filter, ret = %d", ret);
1059                 return -EIO;
1060         }
1061         return 0;
1062 }
1063
1064 int hns3_get_count(struct hns3_hw *hw, uint32_t id, uint64_t *value)
1065 {
1066         struct hns3_fd_get_cnt_cmd *req;
1067         struct hns3_cmd_desc desc;
1068         int ret;
1069
1070         hns3_cmd_setup_basic_desc(&desc, HNS3_OPC_FD_COUNTER_OP, true);
1071
1072         req = (struct hns3_fd_get_cnt_cmd *)desc.data;
1073         req->stage = HNS3_FD_STAGE_1;
1074         req->index = rte_cpu_to_le_32(id);
1075
1076         ret = hns3_cmd_send(hw, &desc, 1);
1077         if (ret) {
1078                 hns3_err(hw, "Read counter fail, ret=%d", ret);
1079                 return ret;
1080         }
1081
1082         *value = req->value;
1083
1084         return ret;
1085 }