drivers/net/mlx5/mlx5_flow_meter.c

   1 // SPDX-License-Identifier: BSD-3-Clause
   2 /*
   3  * Copyright 2018 Mellanox Technologies, Ltd
   4  */
   5 #include <math.h>
   6
   7 #include <rte_tailq.h>
   8 #include <rte_malloc.h>
   9 #include <rte_mtr.h>
  10 #include <rte_mtr_driver.h>
  11
  12 #include <mlx5_devx_cmds.h>
  13 #include <mlx5_malloc.h>
  14
  15 #include "mlx5.h"
  16 #include "mlx5_flow.h"
  17
  18 /**
  19  * Create the meter action.
  20  *
  21  * @param priv
  22  *   Pointer to mlx5_priv.
  23  * @param[in] fm
  24  *   Pointer to flow meter to be converted.
  25  *
  26  * @return
  27  *   Pointer to the meter action on success, NULL otherwise.
  28  */
  29 static void *
  30 mlx5_flow_meter_action_create(struct mlx5_priv *priv,
  31                               struct mlx5_flow_meter *fm)
  32 {
  33 #ifdef HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER
  34         struct mlx5dv_dr_flow_meter_attr mtr_init;
  35         void *attr = fm->mfts->fmp;
  36         struct mlx5_flow_meter_srtcm_rfc2697_prm *srtcm =
  37                                                      &fm->profile->srtcm_prm;
  38
  39         fm->mfts->fmp_size = MLX5_ST_SZ_BYTES(flow_meter_parameters);
  40         memset(attr, 0, fm->mfts->fmp_size);
  41         MLX5_SET(flow_meter_parameters, attr, valid, 1);
  42         MLX5_SET(flow_meter_parameters, attr, bucket_overflow, 1);
  43         MLX5_SET(flow_meter_parameters, attr,
  44                  start_color, MLX5_FLOW_COLOR_GREEN);
  45         MLX5_SET(flow_meter_parameters, attr, both_buckets_on_green, 0);
  46         MLX5_SET(flow_meter_parameters,
  47                  attr, cbs_exponent, srtcm->cbs_exponent);
  48         MLX5_SET(flow_meter_parameters,
  49                  attr, cbs_mantissa, srtcm->cbs_mantissa);
  50         MLX5_SET(flow_meter_parameters,
  51                  attr, cir_exponent, srtcm->cir_exponent);
  52         MLX5_SET(flow_meter_parameters,
  53                  attr, cir_mantissa, srtcm->cir_mantissa);
  54         MLX5_SET(flow_meter_parameters,
  55                  attr, ebs_exponent, srtcm->ebs_exponent);
  56         MLX5_SET(flow_meter_parameters,
  57                  attr, ebs_mantissa, srtcm->ebs_mantissa);
  58         mtr_init.next_table =
  59                 fm->transfer ? fm->mfts->transfer.tbl->obj :
  60                     fm->egress ? fm->mfts->egress.tbl->obj :
  61                                        fm->mfts->ingress.tbl->obj;
  62         mtr_init.reg_c_index = priv->mtr_color_reg - REG_C_0;
  63         mtr_init.flow_meter_parameter = fm->mfts->fmp;
  64         mtr_init.flow_meter_parameter_sz = fm->mfts->fmp_size;
  65         mtr_init.active = fm->active_state;
  66         return mlx5_glue->dv_create_flow_action_meter(&mtr_init);
  67 #else
  68         (void)priv;
  69         (void)fm;
  70         return NULL;
  71 #endif
  72 }
  73
  74 /**
  75  * Find meter profile by id.
  76  *
  77  * @param priv
  78  *   Pointer to mlx5_priv.
  79  * @param meter_profile_id
  80  *   Meter profile id.
  81  *
  82  * @return
  83  *   Pointer to the profile found on success, NULL otherwise.
  84  */
  85 static struct mlx5_flow_meter_profile *
  86 mlx5_flow_meter_profile_find(struct mlx5_priv *priv, uint32_t meter_profile_id)
  87 {
  88         struct mlx5_mtr_profiles *fmps = &priv->flow_meter_profiles;
  89         struct mlx5_flow_meter_profile *fmp;
  90
  91         TAILQ_FOREACH(fmp, fmps, next)
  92                 if (meter_profile_id == fmp->meter_profile_id)
  93                         return fmp;
  94         return NULL;
  95 }
  96
  97 /**
  98  * Validate the MTR profile.
  99  *
 100  * @param[in] dev
 101  *   Pointer to Ethernet device.
 102  * @param[in] meter_profile_id
 103  *   Meter profile id.
 104  * @param[in] profile
 105  *   Pointer to meter profile detail.
 106  * @param[out] error
 107  *   Pointer to the error structure.
 108  *
 109  * @return
 110  *   0 on success, a negative errno value otherwise and rte_errno is set.
 111  */
 112 static int
 113 mlx5_flow_meter_profile_validate(struct rte_eth_dev *dev,
 114                                  uint32_t meter_profile_id,
 115                                  struct rte_mtr_meter_profile *profile,
 116                                  struct rte_mtr_error *error)
 117 {
 118         struct mlx5_priv *priv = dev->data->dev_private;
 119         struct mlx5_flow_meter_profile *fmp;
 120
 121         /* Profile must not be NULL. */
 122         if (profile == NULL)
 123                 return -rte_mtr_error_set(error, EINVAL,
 124                                           RTE_MTR_ERROR_TYPE_METER_PROFILE,
 125                                           NULL, "Meter profile is null.");
 126         /* Meter profile ID must be valid. */
 127         if (meter_profile_id == UINT32_MAX)
 128                 return -rte_mtr_error_set(error, EINVAL,
 129                                           RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
 130                                           NULL, "Meter profile id not valid.");
 131         /* Meter profile must not exist. */
 132         fmp = mlx5_flow_meter_profile_find(priv, meter_profile_id);
 133         if (fmp)
 134                 return -rte_mtr_error_set(error, EEXIST,
 135                                           RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
 136                                           NULL,
 137                                           "Meter profile already exists.");
 138         if (profile->alg == RTE_MTR_SRTCM_RFC2697) {
 139                 if (priv->config.hca_attr.qos.flow_meter_old) {
 140                         /* Verify support for flow meter parameters. */
 141                         if (profile->srtcm_rfc2697.cir > 0 &&
 142                             profile->srtcm_rfc2697.cir <= MLX5_SRTCM_CIR_MAX &&
 143                             profile->srtcm_rfc2697.cbs > 0 &&
 144                             profile->srtcm_rfc2697.cbs <= MLX5_SRTCM_CBS_MAX &&
 145                             profile->srtcm_rfc2697.ebs <= MLX5_SRTCM_EBS_MAX)
 146                                 return 0;
 147                         else
 148                                 return -rte_mtr_error_set
 149                                              (error, ENOTSUP,
 150                                               RTE_MTR_ERROR_TYPE_MTR_PARAMS,
 151                                               NULL,
 152                                               profile->srtcm_rfc2697.ebs ?
 153                                               "Metering value ebs must be 0." :
 154                                               "Invalid metering parameters.");
 155                 }
 156         }
 157         return -rte_mtr_error_set(error, ENOTSUP,
 158                                   RTE_MTR_ERROR_TYPE_METER_PROFILE,
 159                                   NULL, "Metering algorithm not supported.");
 160 }
 161
 162 /**
 163  * Calculate mantissa and exponent for cir.
 164  *
 165  * @param[in] cir
 166  *   Value to be calculated.
 167  * @param[out] man
 168  *   Pointer to the mantissa.
 169  * @param[out] exp
 170  *   Pointer to the exp.
 171  */
 172 static void
 173 mlx5_flow_meter_cir_man_exp_calc(int64_t cir, uint8_t *man, uint8_t *exp)
 174 {
 175         int64_t _cir;
 176         int64_t delta = INT64_MAX;
 177         uint8_t _man = 0;
 178         uint8_t _exp = 0;
 179         uint64_t m, e;
 180
 181         for (m = 0; m <= 0xFF; m++) { /* man width 8 bit */
 182                 for (e = 0; e <= 0x1F; e++) { /* exp width 5bit */
 183                         _cir = (1000000000ULL * m) >> e;
 184                         if (llabs(cir - _cir) <= delta) {
 185                                 delta = llabs(cir - _cir);
 186                                 _man = m;
 187                                 _exp = e;
 188                         }
 189                 }
 190         }
 191         *man = _man;
 192         *exp = _exp;
 193 }
 194
 195 /**
 196  * Calculate mantissa and exponent for xbs.
 197  *
 198  * @param[in] xbs
 199  *   Value to be calculated.
 200  * @param[out] man
 201  *   Pointer to the mantissa.
 202  * @param[out] exp
 203  *   Pointer to the exp.
 204  */
 205 static void
 206 mlx5_flow_meter_xbs_man_exp_calc(uint64_t xbs, uint8_t *man, uint8_t *exp)
 207 {
 208         int _exp;
 209         double _man;
 210
 211         /* Special case xbs == 0 ? both exp and matissa are 0. */
 212         if (xbs == 0) {
 213                 *man = 0;
 214                 *exp = 0;
 215                 return;
 216         }
 217         /* xbs = xbs_mantissa * 2^xbs_exponent */
 218         _man = frexp(xbs, &_exp);
 219         _man = _man * pow(2, MLX5_MAN_WIDTH);
 220         _exp = _exp - MLX5_MAN_WIDTH;
 221         *man = (uint8_t)ceil(_man);
 222         *exp = _exp;
 223 }
 224
 225 /**
 226  * Fill the prm meter parameter.
 227  *
 228  * @param[in,out] fmp
 229  *   Pointer to meter profie to be converted.
 230  * @param[out] error
 231  *   Pointer to the error structure.
 232  *
 233  * @return
 234  *   0 on success, a negative errno value otherwise and rte_errno is set.
 235  */
 236 static int
 237 mlx5_flow_meter_param_fill(struct mlx5_flow_meter_profile *fmp,
 238                           struct rte_mtr_error *error)
 239 {
 240         struct mlx5_flow_meter_srtcm_rfc2697_prm *srtcm = &fmp->srtcm_prm;
 241         uint8_t man, exp;
 242
 243         if (fmp->profile.alg != RTE_MTR_SRTCM_RFC2697)
 244                 return -rte_mtr_error_set(error, ENOTSUP,
 245                                 RTE_MTR_ERROR_TYPE_METER_PROFILE,
 246                                 NULL, "Metering algorithm not supported.");
 247          /* cbs = cbs_mantissa * 2^cbs_exponent */
 248         mlx5_flow_meter_xbs_man_exp_calc(fmp->profile.srtcm_rfc2697.cbs,
 249                                     &man, &exp);
 250         srtcm->cbs_mantissa = man;
 251         srtcm->cbs_exponent = exp;
 252         /* Check if cbs mantissa is too large. */
 253         if (srtcm->cbs_exponent != exp)
 254                 return -rte_mtr_error_set(error, EINVAL,
 255                                           RTE_MTR_ERROR_TYPE_MTR_PARAMS, NULL,
 256                                           "Metering profile parameter cbs is"
 257                                           " invalid.");
 258         /* ebs = ebs_mantissa * 2^ebs_exponent */
 259         mlx5_flow_meter_xbs_man_exp_calc(fmp->profile.srtcm_rfc2697.ebs,
 260                                     &man, &exp);
 261         srtcm->ebs_mantissa = man;
 262         srtcm->ebs_exponent = exp;
 263         /* Check if ebs mantissa is too large. */
 264         if (srtcm->ebs_exponent != exp)
 265                 return -rte_mtr_error_set(error, EINVAL,
 266                                           RTE_MTR_ERROR_TYPE_MTR_PARAMS, NULL,
 267                                           "Metering profile parameter ebs is"
 268                                           " invalid.");
 269         /* cir = 8G * cir_mantissa * 1/(2^cir_exponent)) Bytes/Sec */
 270         mlx5_flow_meter_cir_man_exp_calc(fmp->profile.srtcm_rfc2697.cir,
 271                                     &man, &exp);
 272         srtcm->cir_mantissa = man;
 273         srtcm->cir_exponent = exp;
 274         /* Check if cir mantissa is too large. */
 275         if (srtcm->cir_exponent != exp)
 276                 return -rte_mtr_error_set(error, EINVAL,
 277                                           RTE_MTR_ERROR_TYPE_MTR_PARAMS, NULL,
 278                                           "Metering profile parameter cir is"
 279                                           " invalid.");
 280         return 0;
 281 }
 282
 283 /**
 284  * Callback to get MTR capabilities.
 285  *
 286  * @param[in] dev
 287  *   Pointer to Ethernet device.
 288  * @param[out] cap
 289  *   Pointer to save MTR capabilities.
 290  * @param[out] error
 291  *   Pointer to the error structure.
 292  *
 293  * @return
 294  *   0 on success, a negative errno value otherwise and rte_errno is set.
 295  */
 296 static int
 297 mlx5_flow_mtr_cap_get(struct rte_eth_dev *dev,
 298                  struct rte_mtr_capabilities *cap,
 299                  struct rte_mtr_error *error __rte_unused)
 300 {
 301         struct mlx5_priv *priv = dev->data->dev_private;
 302         struct mlx5_hca_qos_attr *qattr = &priv->config.hca_attr.qos;
 303
 304         if (!priv->mtr_en)
 305                 return -rte_mtr_error_set(error, ENOTSUP,
 306                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
 307                                           "Meter is not supported");
 308         memset(cap, 0, sizeof(*cap));
 309         cap->n_max = 1 << qattr->log_max_flow_meter;
 310         cap->n_shared_max = cap->n_max;
 311         cap->identical = 1;
 312         cap->shared_identical = 1;
 313         cap->shared_n_flows_per_mtr_max = 4 << 20;
 314         /* 2M flows can share the same meter. */
 315         cap->chaining_n_mtrs_per_flow_max = 1; /* Chaining is not supported. */
 316         cap->meter_srtcm_rfc2697_n_max = qattr->flow_meter_old ? cap->n_max : 0;
 317         cap->meter_rate_max = 1ULL << 40; /* 1 Tera tokens per sec. */
 318         cap->policer_action_drop_supported = 1;
 319         cap->stats_mask = RTE_MTR_STATS_N_BYTES_DROPPED |
 320                           RTE_MTR_STATS_N_PKTS_DROPPED;
 321         return 0;
 322 }
 323
 324 /**
 325  * Callback to add MTR profile.
 326  *
 327  * @param[in] dev
 328  *   Pointer to Ethernet device.
 329  * @param[in] meter_profile_id
 330  *   Meter profile id.
 331  * @param[in] profile
 332  *   Pointer to meter profile detail.
 333  * @param[out] error
 334  *   Pointer to the error structure.
 335  *
 336  * @return
 337  *   0 on success, a negative errno value otherwise and rte_errno is set.
 338  */
 339 static int
 340 mlx5_flow_meter_profile_add(struct rte_eth_dev *dev,
 341                        uint32_t meter_profile_id,
 342                        struct rte_mtr_meter_profile *profile,
 343                        struct rte_mtr_error *error)
 344 {
 345         struct mlx5_priv *priv = dev->data->dev_private;
 346         struct mlx5_mtr_profiles *fmps = &priv->flow_meter_profiles;
 347         struct mlx5_flow_meter_profile *fmp;
 348         int ret;
 349
 350         if (!priv->mtr_en)
 351                 return -rte_mtr_error_set(error, ENOTSUP,
 352                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
 353                                           "Meter is not supported");
 354         /* Check input params. */
 355         ret = mlx5_flow_meter_profile_validate(dev, meter_profile_id,
 356                                                profile, error);
 357         if (ret)
 358                 return ret;
 359         /* Meter profile memory allocation. */
 360         fmp = mlx5_malloc(MLX5_MEM_ZERO, sizeof(struct mlx5_flow_meter_profile),
 361                          RTE_CACHE_LINE_SIZE, SOCKET_ID_ANY);
 362         if (fmp == NULL)
 363                 return -rte_mtr_error_set(error, ENOMEM,
 364                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED,
 365                                           NULL, "Meter profile memory "
 366                                           "alloc failed.");
 367         /* Fill profile info. */
 368         fmp->meter_profile_id = meter_profile_id;
 369         fmp->profile = *profile;
 370         /* Fill the flow meter parameters for the PRM. */
 371         ret = mlx5_flow_meter_param_fill(fmp, error);
 372         if (ret)
 373                 goto error;
 374         /* Add to list. */
 375         TAILQ_INSERT_TAIL(fmps, fmp, next);
 376         return 0;
 377 error:
 378         mlx5_free(fmp);
 379         return ret;
 380 }
 381
 382 /**
 383  * Callback to delete MTR profile.
 384  *
 385  * @param[in] dev
 386  *   Pointer to Ethernet device.
 387  * @param[in] meter_profile_id
 388  *   Meter profile id.
 389  * @param[out] error
 390  *   Pointer to the error structure.
 391  *
 392  * @return
 393  *   0 on success, a negative errno value otherwise and rte_errno is set.
 394  */
 395 static int
 396 mlx5_flow_meter_profile_delete(struct rte_eth_dev *dev,
 397                           uint32_t meter_profile_id,
 398                           struct rte_mtr_error *error)
 399 {
 400         struct mlx5_priv *priv = dev->data->dev_private;
 401         struct mlx5_flow_meter_profile *fmp;
 402
 403         if (!priv->mtr_en)
 404                 return -rte_mtr_error_set(error, ENOTSUP,
 405                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
 406                                           "Meter is not supported");
 407         /* Meter profile must exist. */
 408         fmp = mlx5_flow_meter_profile_find(priv, meter_profile_id);
 409         if (fmp == NULL)
 410                 return -rte_mtr_error_set(error, ENOENT,
 411                                           RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
 412                                           &meter_profile_id,
 413                                           "Meter profile id is invalid.");
 414         /* Check profile is unused. */
 415         if (fmp->ref_cnt)
 416                 return -rte_mtr_error_set(error, EBUSY,
 417                                           RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
 418                                           NULL, "Meter profile is in use.");
 419         /* Remove from list. */
 420         TAILQ_REMOVE(&priv->flow_meter_profiles, fmp, next);
 421         mlx5_free(fmp);
 422         return 0;
 423 }
 424
 425 /**
 426  * Convert wrong color setting action to verbose error.
 427  *
 428  * @param[in] action
 429  *   Policy color action.
 430  *
 431  * @return
 432  *   Verbose meter color error type.
 433  */
 434 static inline enum rte_mtr_error_type
 435 action2error(enum rte_mtr_policer_action action)
 436 {
 437         switch (action) {
 438         case MTR_POLICER_ACTION_COLOR_GREEN:
 439                 return RTE_MTR_ERROR_TYPE_POLICER_ACTION_GREEN;
 440         case MTR_POLICER_ACTION_COLOR_YELLOW:
 441                 return RTE_MTR_ERROR_TYPE_POLICER_ACTION_YELLOW;
 442         case MTR_POLICER_ACTION_COLOR_RED:
 443                 return RTE_MTR_ERROR_TYPE_POLICER_ACTION_RED;
 444         default:
 445                 break;
 446         }
 447         return RTE_MTR_ERROR_TYPE_UNSPECIFIED;
 448 }
 449
 450 /**
 451  * Check meter validation.
 452  *
 453  * @param[in] priv
 454  *   Pointer to mlx5 private data structure.
 455  * @param[in] meter_id
 456  *   Meter id.
 457  * @param[in] params
 458  *   Pointer to rte meter parameters.
 459  * @param[out] error
 460  *   Pointer to rte meter error structure.
 461  *
 462  * @return
 463  *   0 on success, a negative errno value otherwise and rte_errno is set.
 464  */
 465 static int
 466 mlx5_flow_meter_validate(struct mlx5_priv *priv, uint32_t meter_id,
 467                          struct rte_mtr_params *params,
 468                          struct rte_mtr_error *error)
 469 {
 470         static enum rte_mtr_policer_action
 471                                 valid_recol_action[RTE_COLORS] = {
 472                                                MTR_POLICER_ACTION_COLOR_GREEN,
 473                                                MTR_POLICER_ACTION_COLOR_YELLOW,
 474                                                MTR_POLICER_ACTION_COLOR_RED };
 475         int i;
 476
 477         /* Meter must use global drop action. */
 478         if (!priv->sh->dr_drop_action)
 479                 return -rte_mtr_error_set(error, ENOTSUP,
 480                                           RTE_MTR_ERROR_TYPE_MTR_PARAMS,
 481                                           NULL,
 482                                           "No drop action ready for meter.");
 483         /* Meter params must not be NULL. */
 484         if (params == NULL)
 485                 return -rte_mtr_error_set(error, EINVAL,
 486                                           RTE_MTR_ERROR_TYPE_MTR_PARAMS,
 487                                           NULL, "Meter object params null.");
 488         /* Previous meter color is not supported. */
 489         if (params->use_prev_mtr_color)
 490                 return -rte_mtr_error_set(error, ENOTSUP,
 491                                           RTE_MTR_ERROR_TYPE_MTR_PARAMS,
 492                                           NULL,
 493                                           "Previous meter color "
 494                                           "not supported.");
 495         /* Validate policer settings. */
 496         for (i = 0; i < RTE_COLORS; i++)
 497                 if (params->action[i] != valid_recol_action[i] &&
 498                     params->action[i] != MTR_POLICER_ACTION_DROP)
 499                         return -rte_mtr_error_set
 500                                         (error, ENOTSUP,
 501                                          action2error(params->action[i]), NULL,
 502                                          "Recolor action not supported.");
 503         /* Validate meter id. */
 504         if (mlx5_flow_meter_find(priv, meter_id))
 505                 return -rte_mtr_error_set(error, EEXIST,
 506                                           RTE_MTR_ERROR_TYPE_MTR_ID, NULL,
 507                                           "Meter object already exists.");
 508         return 0;
 509 }
 510
 511 /**
 512  * Modify the flow meter action.
 513  *
 514  * @param[in] priv
 515  *   Pointer to mlx5 private data structure.
 516  * @param[in] fm
 517  *   Pointer to flow meter to be modified.
 518  * @param[in] srtcm
 519  *   Pointer to meter srtcm description parameter.
 520  * @param[in] modify_bits
 521  *   The bit in srtcm to be updated.
 522  * @param[in] active_state
 523  *   The state to be updated.
 524  * @return
 525  *   0 on success, o negative value otherwise.
 526  */
 527 static int
 528 mlx5_flow_meter_action_modify(struct mlx5_priv *priv,
 529                 struct mlx5_flow_meter *fm,
 530                 const struct mlx5_flow_meter_srtcm_rfc2697_prm *srtcm,
 531                 uint64_t modify_bits, uint32_t active_state)
 532 {
 533 #ifdef HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER
 534         uint32_t in[MLX5_ST_SZ_DW(flow_meter_parameters)] = { 0 };
 535         uint32_t *attr;
 536         struct mlx5dv_dr_flow_meter_attr mod_attr = { 0 };
 537         int ret;
 538
 539         /* Fill command parameters. */
 540         mod_attr.reg_c_index = priv->mtr_color_reg - REG_C_0;
 541         mod_attr.flow_meter_parameter = in;
 542         mod_attr.flow_meter_parameter_sz = fm->mfts->fmp_size;
 543         if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_ACTIVE)
 544                 mod_attr.active = !!active_state;
 545         else
 546                 mod_attr.active = 0;
 547         attr = in;
 548         if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CBS) {
 549                 MLX5_SET(flow_meter_parameters,
 550                          attr, cbs_exponent, srtcm->cbs_exponent);
 551                 MLX5_SET(flow_meter_parameters,
 552                          attr, cbs_mantissa, srtcm->cbs_mantissa);
 553         }
 554         if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CIR) {
 555                 MLX5_SET(flow_meter_parameters,
 556                          attr, cir_exponent, srtcm->cir_exponent);
 557                 MLX5_SET(flow_meter_parameters,
 558                          attr, cir_mantissa, srtcm->cir_mantissa);
 559         }
 560         if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_EBS) {
 561                 MLX5_SET(flow_meter_parameters,
 562                          attr, ebs_exponent, srtcm->ebs_exponent);
 563                 MLX5_SET(flow_meter_parameters,
 564                          attr, ebs_mantissa, srtcm->ebs_mantissa);
 565         }
 566         /* Apply modifications to meter only if it was created. */
 567         if (fm->mfts->meter_action) {
 568                 ret = mlx5_glue->dv_modify_flow_action_meter
 569                                         (fm->mfts->meter_action, &mod_attr,
 570                                         rte_cpu_to_be_64(modify_bits));
 571                 if (ret)
 572                         return ret;
 573         }
 574         /* Update succeedded modify meter parameters. */
 575         if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_ACTIVE)
 576                 fm->active_state = !!active_state;
 577         attr = fm->mfts->fmp;
 578         if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CBS) {
 579                 MLX5_SET(flow_meter_parameters,
 580                          attr, cbs_exponent, srtcm->cbs_exponent);
 581                 MLX5_SET(flow_meter_parameters,
 582                          attr, cbs_mantissa, srtcm->cbs_mantissa);
 583         }
 584         if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CIR) {
 585                 MLX5_SET(flow_meter_parameters,
 586                          attr, cir_exponent, srtcm->cir_exponent);
 587                 MLX5_SET(flow_meter_parameters,
 588                          attr, cir_mantissa, srtcm->cir_mantissa);
 589         }
 590         if (modify_bits & MLX5_FLOW_METER_OBJ_MODIFY_FIELD_EBS) {
 591                 MLX5_SET(flow_meter_parameters,
 592                          attr, ebs_exponent, srtcm->ebs_exponent);
 593                 MLX5_SET(flow_meter_parameters,
 594                          attr, ebs_mantissa, srtcm->ebs_mantissa);
 595         }
 596
 597         return 0;
 598 #else
 599         (void)priv;
 600         (void)fm;
 601         (void)srtcm;
 602         (void)modify_bits;
 603         (void)active_state;
 604         return -ENOTSUP;
 605 #endif
 606 }
 607
 608 /**
 609  * Create meter rules.
 610  *
 611  * @param[in] dev
 612  *   Pointer to Ethernet device.
 613  * @param[in] meter_id
 614  *   Meter id.
 615  * @param[in] params
 616  *   Pointer to rte meter parameters.
 617  * @param[in] shared
 618  *   Meter shared with other flow or not.
 619  * @param[out] error
 620  *   Pointer to rte meter error structure.
 621  *
 622  * @return
 623  *   0 on success, a negative errno value otherwise and rte_errno is set.
 624  */
 625 static int
 626 mlx5_flow_meter_create(struct rte_eth_dev *dev, uint32_t meter_id,
 627                        struct rte_mtr_params *params, int shared,
 628                        struct rte_mtr_error *error)
 629 {
 630         struct mlx5_priv *priv = dev->data->dev_private;
 631         struct mlx5_flow_meters *fms = &priv->flow_meters;
 632         struct mlx5_flow_meter_profile *fmp;
 633         struct mlx5_flow_meter *fm;
 634         const struct rte_flow_attr attr = {
 635                                 .ingress = 1,
 636                                 .egress = 1,
 637                                 .transfer = priv->config.dv_esw_en ? 1 : 0,
 638                         };
 639         struct mlx5_indexed_pool_config flow_ipool_cfg = {
 640                 .size = 0,
 641                 .trunk_size = 64,
 642                 .need_lock = 1,
 643                 .type = "mlx5_flow_mtr_flow_id_pool",
 644         };
 645         int ret;
 646         unsigned int i;
 647         uint32_t idx = 0;
 648         uint8_t mtr_id_bits;
 649         uint8_t mtr_reg_bits = priv->mtr_reg_share ?
 650                                 MLX5_MTR_IDLE_BITS_IN_COLOR_REG : MLX5_REG_BITS;
 651
 652         if (!priv->mtr_en)
 653                 return -rte_mtr_error_set(error, ENOTSUP,
 654                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
 655                                           "Meter is not supported");
 656         /* Validate the parameters. */
 657         ret = mlx5_flow_meter_validate(priv, meter_id, params, error);
 658         if (ret)
 659                 return ret;
 660         /* Meter profile must exist. */
 661         fmp = mlx5_flow_meter_profile_find(priv, params->meter_profile_id);
 662         if (fmp == NULL)
 663                 return -rte_mtr_error_set(error, ENOENT,
 664                                           RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
 665                                           NULL, "Meter profile id not valid.");
 666         /* Allocate the flow meter memory. */
 667         fm = mlx5_ipool_zmalloc(priv->sh->ipool[MLX5_IPOOL_MTR], &idx);
 668         if (fm == NULL)
 669                 return -rte_mtr_error_set(error, ENOMEM,
 670                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
 671                                           "Memory alloc failed for meter.");
 672         mtr_id_bits = MLX5_REG_BITS - __builtin_clz(idx);
 673         if ((mtr_id_bits + priv->max_mtr_flow_bits) > mtr_reg_bits) {
 674                 DRV_LOG(ERR, "Meter number exceeds max limit.");
 675                 goto error;
 676         }
 677         if (mtr_id_bits > priv->max_mtr_bits)
 678                 priv->max_mtr_bits = mtr_id_bits;
 679         fm->idx = idx;
 680         /* Fill the flow meter parameters. */
 681         fm->meter_id = meter_id;
 682         fm->profile = fmp;
 683         memcpy(fm->action, params->action, sizeof(params->action));
 684         fm->stats_mask = params->stats_mask;
 685
 686         /* Alloc policer counters. */
 687         for (i = 0; i < RTE_DIM(fm->policer_stats.cnt); i++) {
 688                 fm->policer_stats.cnt[i] = mlx5_counter_alloc(dev);
 689                 if (!fm->policer_stats.cnt[i])
 690                         goto error;
 691         }
 692         fm->mfts = mlx5_flow_create_mtr_tbls(dev);
 693         if (!fm->mfts)
 694                 goto error;
 695         ret = mlx5_flow_prepare_policer_rules(dev, fm, &attr);
 696         if (ret)
 697                 goto error;
 698         /* Add to the flow meter list. */
 699         TAILQ_INSERT_TAIL(fms, fm, next);
 700         fm->active_state = 1; /* Config meter starts as active. */
 701         fm->shared = !!shared;
 702         fm->policer_stats.stats_mask = params->stats_mask;
 703         fm->profile->ref_cnt++;
 704         fm->flow_ipool = mlx5_ipool_create(&flow_ipool_cfg);
 705         if (!fm->flow_ipool)
 706                 goto error;
 707         rte_spinlock_init(&fm->sl);
 708         return 0;
 709 error:
 710         mlx5_flow_destroy_policer_rules(dev, fm, &attr);
 711         mlx5_flow_destroy_mtr_tbls(dev, fm->mfts);
 712         /* Free policer counters. */
 713         for (i = 0; i < RTE_DIM(fm->policer_stats.cnt); i++)
 714                 if (fm->policer_stats.cnt[i])
 715                         mlx5_counter_free(dev, fm->policer_stats.cnt[i]);
 716         mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MTR], idx);
 717         return -rte_mtr_error_set(error, -ret,
 718                                   RTE_MTR_ERROR_TYPE_UNSPECIFIED,
 719                                   NULL, "Failed to create devx meter.");
 720 }
 721
 722 /**
 723  * Destroy meter rules.
 724  *
 725  * @param[in] dev
 726  *   Pointer to Ethernet device.
 727  * @param[in] meter_id
 728  *   Meter id.
 729  * @param[out] error
 730  *   Pointer to rte meter error structure.
 731  *
 732  * @return
 733  *   0 on success, a negative errno value otherwise and rte_errno is set.
 734  */
 735 static int
 736 mlx5_flow_meter_destroy(struct rte_eth_dev *dev, uint32_t meter_id,
 737                         struct rte_mtr_error *error)
 738 {
 739         struct mlx5_priv *priv = dev->data->dev_private;
 740         struct mlx5_flow_meters *fms = &priv->flow_meters;
 741         struct mlx5_flow_meter_profile *fmp;
 742         struct mlx5_flow_meter *fm;
 743         const struct rte_flow_attr attr = {
 744                                 .ingress = 1,
 745                                 .egress = 1,
 746                                 .transfer = priv->config.dv_esw_en ? 1 : 0,
 747                         };
 748         unsigned int i;
 749
 750         if (!priv->mtr_en)
 751                 return -rte_mtr_error_set(error, ENOTSUP,
 752                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
 753                                           "Meter is not supported");
 754         /* Meter object must exist. */
 755         fm = mlx5_flow_meter_find(priv, meter_id);
 756         if (fm == NULL)
 757                 return -rte_mtr_error_set(error, ENOENT,
 758                                           RTE_MTR_ERROR_TYPE_MTR_ID,
 759                                           NULL, "Meter object id not valid.");
 760         /* Meter object must not have any owner. */
 761         if (fm->ref_cnt > 0)
 762                 return -rte_mtr_error_set(error, EBUSY,
 763                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED,
 764                                           NULL, "Meter object is being used.");
 765         /* Get the meter profile. */
 766         fmp = fm->profile;
 767         MLX5_ASSERT(fmp);
 768         /* Update dependencies. */
 769         fmp->ref_cnt--;
 770         /* Remove from the flow meter list. */
 771         TAILQ_REMOVE(fms, fm, next);
 772         /* Free policer counters. */
 773         for (i = 0; i < RTE_DIM(fm->policer_stats.cnt); i++)
 774                 if (fm->policer_stats.cnt[i])
 775                         mlx5_counter_free(dev, fm->policer_stats.cnt[i]);
 776         /* Free meter flow table */
 777         if (fm->flow_ipool)
 778                 mlx5_ipool_destroy(fm->flow_ipool);
 779         mlx5_flow_destroy_policer_rules(dev, fm, &attr);
 780         mlx5_flow_destroy_mtr_tbls(dev, fm->mfts);
 781         mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MTR], fm->idx);
 782         return 0;
 783 }
 784
 785 /**
 786  * Modify meter state.
 787  *
 788  * @param[in] priv
 789  *   Pointer to mlx5 private data structure.
 790  * @param[in] fm
 791  *   Pointer to flow meter.
 792  * @param[in] new_state
 793  *   New state to update.
 794  * @param[out] error
 795  *   Pointer to rte meter error structure.
 796  *
 797  * @return
 798  *   0 on success, a negative errno value otherwise and rte_errno is set.
 799  */
 800 static int
 801 mlx5_flow_meter_modify_state(struct mlx5_priv *priv,
 802                              struct mlx5_flow_meter *fm,
 803                              uint32_t new_state,
 804                              struct rte_mtr_error *error)
 805 {
 806         static const struct mlx5_flow_meter_srtcm_rfc2697_prm srtcm = {
 807                 .cbs_exponent = 20,
 808                 .cbs_mantissa = 191,
 809                 .cir_exponent = 0,
 810                 .cir_mantissa = 200,
 811                 .ebs_exponent = 0,
 812                 .ebs_mantissa = 0,
 813         };
 814         uint64_t modify_bits = MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CBS |
 815                                MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CIR;
 816         int ret;
 817
 818         if (new_state == MLX5_FLOW_METER_DISABLE)
 819                 ret = mlx5_flow_meter_action_modify(priv, fm, &srtcm,
 820                                                     modify_bits, 0);
 821         else
 822                 ret = mlx5_flow_meter_action_modify(priv, fm,
 823                                                    &fm->profile->srtcm_prm,
 824                                                     modify_bits, 0);
 825         if (ret)
 826                 return -rte_mtr_error_set(error, -ret,
 827                                           RTE_MTR_ERROR_TYPE_MTR_PARAMS,
 828                                           NULL,
 829                                           new_state ?
 830                                           "Failed to enable meter." :
 831                                           "Failed to disable meter.");
 832         return 0;
 833 }
 834
 835 /**
 836  * Callback to enable flow meter.
 837  *
 838  * @param[in] dev
 839  *   Pointer to Ethernet device.
 840  * @param[in] meter_id
 841  *   Meter id.
 842  * @param[out] error
 843  *   Pointer to rte meter error structure.
 844  *
 845  * @return
 846  *   0 on success, a negative errno value otherwise and rte_errno is set.
 847  */
 848 static int
 849 mlx5_flow_meter_enable(struct rte_eth_dev *dev,
 850                        uint32_t meter_id,
 851                        struct rte_mtr_error *error)
 852 {
 853         struct mlx5_priv *priv = dev->data->dev_private;
 854         struct mlx5_flow_meter *fm;
 855         int ret;
 856
 857         if (!priv->mtr_en)
 858                 return -rte_mtr_error_set(error, ENOTSUP,
 859                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
 860                                           "Meter is not supported");
 861         /* Meter object must exist. */
 862         fm = mlx5_flow_meter_find(priv, meter_id);
 863         if (fm == NULL)
 864                 return -rte_mtr_error_set(error, ENOENT,
 865                                           RTE_MTR_ERROR_TYPE_MTR_ID,
 866                                           NULL, "Meter not found.");
 867         if (fm->active_state == MLX5_FLOW_METER_ENABLE)
 868                 return 0;
 869         ret = mlx5_flow_meter_modify_state(priv, fm, MLX5_FLOW_METER_ENABLE,
 870                                            error);
 871         if (!ret)
 872                 fm->active_state = MLX5_FLOW_METER_ENABLE;
 873         return ret;
 874 }
 875
 876 /**
 877  * Callback to disable flow meter.
 878  *
 879  * @param[in] dev
 880  *   Pointer to Ethernet device.
 881  * @param[in] meter_id
 882  *   Meter id.
 883  * @param[out] error
 884  *   Pointer to rte meter error structure.
 885  *
 886  * @return
 887  *   0 on success, a negative errno value otherwise and rte_errno is set.
 888  */
 889 static int
 890 mlx5_flow_meter_disable(struct rte_eth_dev *dev,
 891                         uint32_t meter_id,
 892                         struct rte_mtr_error *error)
 893 {
 894         struct mlx5_priv *priv = dev->data->dev_private;
 895         struct mlx5_flow_meter *fm;
 896         int ret;
 897
 898         if (!priv->mtr_en)
 899                 return -rte_mtr_error_set(error, ENOTSUP,
 900                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
 901                                           "Meter is not supported");
 902         /* Meter object must exist. */
 903         fm = mlx5_flow_meter_find(priv, meter_id);
 904         if (fm == NULL)
 905                 return -rte_mtr_error_set(error, ENOENT,
 906                                           RTE_MTR_ERROR_TYPE_MTR_ID,
 907                                           NULL, "Meter not found.");
 908         if (fm->active_state == MLX5_FLOW_METER_DISABLE)
 909                 return 0;
 910         ret = mlx5_flow_meter_modify_state(priv, fm, MLX5_FLOW_METER_DISABLE,
 911                                            error);
 912         if (!ret)
 913                 fm->active_state = MLX5_FLOW_METER_DISABLE;
 914         return ret;
 915 }
 916
 917 /**
 918  * Callback to update meter profile.
 919  *
 920  * @param[in] dev
 921  *   Pointer to Ethernet device.
 922  * @param[in] meter_id
 923  *   Meter id.
 924  * @param[in] meter_profile_id
 925  *   To be updated meter profile id.
 926  * @param[out] error
 927  *   Pointer to rte meter error structure.
 928  *
 929  * @return
 930  *   0 on success, a negative errno value otherwise and rte_errno is set.
 931  */
 932 static int
 933 mlx5_flow_meter_profile_update(struct rte_eth_dev *dev,
 934                                uint32_t meter_id,
 935                                uint32_t meter_profile_id,
 936                                struct rte_mtr_error *error)
 937 {
 938         struct mlx5_priv *priv = dev->data->dev_private;
 939         struct mlx5_flow_meter_profile *fmp;
 940         struct mlx5_flow_meter_profile *old_fmp;
 941         struct mlx5_flow_meter *fm;
 942         uint64_t modify_bits = MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CBS |
 943                                MLX5_FLOW_METER_OBJ_MODIFY_FIELD_CIR;
 944         int ret;
 945
 946         if (!priv->mtr_en)
 947                 return -rte_mtr_error_set(error, ENOTSUP,
 948                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
 949                                           "Meter is not supported");
 950         /* Meter profile must exist. */
 951         fmp = mlx5_flow_meter_profile_find(priv, meter_profile_id);
 952         if (fmp == NULL)
 953                 return -rte_mtr_error_set(error, ENOENT,
 954                                           RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
 955                                           NULL, "Meter profile not found.");
 956         /* Meter object must exist. */
 957         fm = mlx5_flow_meter_find(priv, meter_id);
 958         if (fm == NULL)
 959                 return -rte_mtr_error_set(error, ENOENT,
 960                                           RTE_MTR_ERROR_TYPE_MTR_ID,
 961                                           NULL, "Meter not found.");
 962         /* MTR object already set to meter profile id. */
 963         old_fmp = fm->profile;
 964         if (fmp == old_fmp)
 965                 return 0;
 966         /* Update the profile. */
 967         fm->profile = fmp;
 968         /* Update meter params in HW (if not disabled). */
 969         if (fm->active_state == MLX5_FLOW_METER_DISABLE)
 970                 return 0;
 971         ret = mlx5_flow_meter_action_modify(priv, fm, &fm->profile->srtcm_prm,
 972                                               modify_bits, fm->active_state);
 973         if (ret) {
 974                 fm->profile = old_fmp;
 975                 return -rte_mtr_error_set(error, -ret,
 976                                           RTE_MTR_ERROR_TYPE_MTR_PARAMS,
 977                                           NULL, "Failed to update meter"
 978                                           " parmeters in hardware.");
 979         }
 980         old_fmp->ref_cnt--;
 981         fmp->ref_cnt++;
 982         return 0;
 983 }
 984
 985 /**
 986  * Callback to update meter stats mask.
 987  *
 988  * @param[in] dev
 989  *   Pointer to Ethernet device.
 990  * @param[in] meter_id
 991  *   Meter id.
 992  * @param[in] stats_mask
 993  *   To be updated stats_mask.
 994  * @param[out] error
 995  *   Pointer to rte meter error structure.
 996  *
 997  * @return
 998  *   0 on success, a negative errno value otherwise and rte_errno is set.
 999  */
1000 static int
1001 mlx5_flow_meter_stats_update(struct rte_eth_dev *dev,
1002                              uint32_t meter_id,
1003                              uint64_t stats_mask,
1004                              struct rte_mtr_error *error)
1005 {
1006         struct mlx5_priv *priv = dev->data->dev_private;
1007         struct mlx5_flow_meter *fm;
1008
1009         if (!priv->mtr_en)
1010                 return -rte_mtr_error_set(error, ENOTSUP,
1011                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
1012                                           "Meter is not supported");
1013         /* Meter object must exist. */
1014         fm = mlx5_flow_meter_find(priv, meter_id);
1015         if (fm == NULL)
1016                 return -rte_mtr_error_set(error, ENOENT,
1017                                           RTE_MTR_ERROR_TYPE_MTR_ID,
1018                                           NULL, "Meter object id not valid.");
1019         fm->policer_stats.stats_mask = stats_mask;
1020         return 0;
1021 }
1022
1023 /**
1024  * Callback to read meter statistics.
1025  *
1026  * @param[in] dev
1027  *   Pointer to Ethernet device.
1028  * @param[in] meter_id
1029  *   Meter id.
1030  * @param[out] stats
1031  *   Pointer to store the statistics.
1032  * @param[out] stats_mask
1033  *   Pointer to store the stats_mask.
1034  * @param[in] clear
1035  *   Statistic to be cleared after read or not.
1036  * @param[out] error
1037  *   Pointer to rte meter error structure.
1038  *
1039  * @return
1040  *   0 on success, a negative errno value otherwise and rte_errno is set.
1041  */
1042 static int
1043 mlx5_flow_meter_stats_read(struct rte_eth_dev *dev,
1044                            uint32_t meter_id,
1045                            struct rte_mtr_stats *stats,
1046                            uint64_t *stats_mask,
1047                            int clear,
1048                            struct rte_mtr_error *error)
1049 {
1050         static uint64_t meter2mask[RTE_MTR_DROPPED + 1] = {
1051                 RTE_MTR_STATS_N_PKTS_GREEN | RTE_MTR_STATS_N_BYTES_GREEN,
1052                 RTE_MTR_STATS_N_PKTS_YELLOW | RTE_MTR_STATS_N_BYTES_YELLOW,
1053                 RTE_MTR_STATS_N_PKTS_RED | RTE_MTR_STATS_N_BYTES_RED,
1054                 RTE_MTR_STATS_N_PKTS_DROPPED | RTE_MTR_STATS_N_BYTES_DROPPED
1055         };
1056         struct mlx5_priv *priv = dev->data->dev_private;
1057         struct mlx5_flow_meter *fm;
1058         struct mlx5_flow_policer_stats *ps;
1059         uint64_t pkts_dropped = 0;
1060         uint64_t bytes_dropped = 0;
1061         uint64_t pkts;
1062         uint64_t bytes;
1063         int i;
1064         int ret = 0;
1065
1066         if (!priv->mtr_en)
1067                 return -rte_mtr_error_set(error, ENOTSUP,
1068                                           RTE_MTR_ERROR_TYPE_UNSPECIFIED, NULL,
1069                                           "Meter is not supported");
1070         /* Meter object must exist. */
1071         fm = mlx5_flow_meter_find(priv, meter_id);
1072         if (fm == NULL)
1073                 return -rte_mtr_error_set(error, ENOENT,
1074                                           RTE_MTR_ERROR_TYPE_MTR_ID,
1075                                           NULL, "Meter object id not valid.");
1076         ps = &fm->policer_stats;
1077         *stats_mask = ps->stats_mask;
1078         for (i = 0; i < RTE_MTR_DROPPED; i++) {
1079                 if (*stats_mask & meter2mask[i]) {
1080                         ret = mlx5_counter_query(dev, ps->cnt[i], clear, &pkts,
1081                                                  &bytes);
1082                         if (ret)
1083                                 goto error;
1084                         if (fm->action[i] == MTR_POLICER_ACTION_DROP) {
1085                                 pkts_dropped += pkts;
1086                                 bytes_dropped += bytes;
1087                         }
1088                         /* If need to read the packets, set it. */
1089                         if ((1 << i) & (*stats_mask & meter2mask[i]))
1090                                 stats->n_pkts[i] = pkts;
1091                         /* If need to read the bytes, set it. */
1092                         if ((1 << (RTE_MTR_DROPPED + 1 + i)) &
1093                            (*stats_mask & meter2mask[i]))
1094                                 stats->n_bytes[i] = bytes;
1095                 }
1096         }
1097         /* Dropped packets/bytes are treated differently. */
1098         if (*stats_mask & meter2mask[i]) {
1099                 ret = mlx5_counter_query(dev, ps->cnt[i], clear, &pkts,
1100                                          &bytes);
1101                 if (ret)
1102                         goto error;
1103                 pkts += pkts_dropped;
1104                 bytes += bytes_dropped;
1105                 /* If need to read the packets, set it. */
1106                 if ((*stats_mask & meter2mask[i]) &
1107                    RTE_MTR_STATS_N_PKTS_DROPPED)
1108                         stats->n_pkts_dropped = pkts;
1109                 /* If need to read the bytes, set it. */
1110                 if ((*stats_mask & meter2mask[i]) &
1111                    RTE_MTR_STATS_N_BYTES_DROPPED)
1112                         stats->n_bytes_dropped = bytes;
1113         }
1114         return 0;
1115 error:
1116         return -rte_mtr_error_set(error, ret, RTE_MTR_ERROR_TYPE_STATS, NULL,
1117                                  "Failed to read policer counters.");
1118 }
1119
1120 static const struct rte_mtr_ops mlx5_flow_mtr_ops = {
1121         .capabilities_get = mlx5_flow_mtr_cap_get,
1122         .meter_profile_add = mlx5_flow_meter_profile_add,
1123         .meter_profile_delete = mlx5_flow_meter_profile_delete,
1124         .create = mlx5_flow_meter_create,
1125         .destroy = mlx5_flow_meter_destroy,
1126         .meter_enable = mlx5_flow_meter_enable,
1127         .meter_disable = mlx5_flow_meter_disable,
1128         .meter_profile_update = mlx5_flow_meter_profile_update,
1129         .meter_dscp_table_update = NULL,
1130         .policer_actions_update = NULL,
1131         .stats_update = mlx5_flow_meter_stats_update,
1132         .stats_read = mlx5_flow_meter_stats_read,
1133 };
1134
1135 /**
1136  * Get meter operations.
1137  *
1138  * @param dev
1139  *   Pointer to Ethernet device structure.
1140  * @param arg
1141  *   Pointer to set the mtr operations.
1142  *
1143  * @return
1144  *   Always 0.
1145  */
1146 int
1147 mlx5_flow_meter_ops_get(struct rte_eth_dev *dev __rte_unused, void *arg)
1148 {
1149         *(const struct rte_mtr_ops **)arg = &mlx5_flow_mtr_ops;
1150         return 0;
1151 }
1152
1153 /**
1154  * Find meter by id.
1155  *
1156  * @param priv
1157  *   Pointer to mlx5_priv.
1158  * @param meter_id
1159  *   Meter id.
1160  *
1161  * @return
1162  *   Pointer to the profile found on success, NULL otherwise.
1163  */
1164 struct mlx5_flow_meter *
1165 mlx5_flow_meter_find(struct mlx5_priv *priv, uint32_t meter_id)
1166 {
1167         struct mlx5_flow_meters *fms = &priv->flow_meters;
1168         struct mlx5_flow_meter *fm;
1169
1170         TAILQ_FOREACH(fm, fms, next)
1171                 if (meter_id == fm->meter_id)
1172                         return fm;
1173         return NULL;
1174 }
1175
1176 /**
1177  * Attach meter to flow.
1178  * Unidirectional Meter creation can only be done
1179  * when flow direction is known, i.e. when calling meter_attach.
1180  *
1181  * @param [in] priv
1182  *  Pointer to mlx5 private data.
1183  * @param[in] fm
1184  *   Pointer to flow meter.
1185  * @param [in] attr
1186  *  Pointer to flow attributes.
1187  * @param [out] error
1188  *  Pointer to error structure.
1189  *
1190  * @return
1191  *   0 on success, a negative errno value otherwise and rte_errno is set.
1192  */
1193 int
1194 mlx5_flow_meter_attach(struct mlx5_priv *priv,
1195                        struct mlx5_flow_meter *fm,
1196                        const struct rte_flow_attr *attr,
1197                        struct rte_flow_error *error)
1198 {
1199         int ret = 0;
1200
1201         rte_spinlock_lock(&fm->sl);
1202         if (fm->mfts->meter_action) {
1203                 if (fm->shared &&
1204                     attr->transfer == fm->transfer &&
1205                     attr->ingress == fm->ingress &&
1206                     attr->egress == fm->egress)
1207                         fm->ref_cnt++;
1208                 else
1209                         ret = -1;
1210         } else {
1211                 fm->ingress = attr->ingress;
1212                 fm->egress = attr->egress;
1213                 fm->transfer = attr->transfer;
1214                  fm->ref_cnt = 1;
1215                 /* This also creates the meter object. */
1216                 fm->mfts->meter_action = mlx5_flow_meter_action_create(priv,
1217                                                                        fm);
1218                 if (!fm->mfts->meter_action) {
1219                         fm->ref_cnt = 0;
1220                         fm->ingress = 0;
1221                         fm->egress = 0;
1222                         fm->transfer = 0;
1223                         ret = -1;
1224                         DRV_LOG(ERR, "Meter action create failed.");
1225                 }
1226         }
1227         rte_spinlock_unlock(&fm->sl);
1228         if (ret)
1229                 rte_flow_error_set(error, EINVAL,
1230                                    RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
1231                                    fm->mfts->meter_action ?
1232                                    "Meter attr not match" :
1233                                    "Meter action create failed");
1234         return ret ? -rte_errno : 0;
1235 }
1236
1237 /**
1238  * Detach meter from flow.
1239  *
1240  * @param [in] fm
1241  *  Pointer to flow meter.
1242  */
1243 void
1244 mlx5_flow_meter_detach(struct mlx5_flow_meter *fm)
1245 {
1246 #ifdef HAVE_MLX5_DR_CREATE_ACTION_FLOW_METER
1247         rte_spinlock_lock(&fm->sl);
1248         MLX5_ASSERT(fm->ref_cnt);
1249         if (--fm->ref_cnt == 0) {
1250                 mlx5_glue->destroy_flow_action(fm->mfts->meter_action);
1251                 fm->mfts->meter_action = NULL;
1252                 fm->ingress = 0;
1253                 fm->egress = 0;
1254                 fm->transfer = 0;
1255         }
1256         rte_spinlock_unlock(&fm->sl);
1257 #else
1258         (void)fm;
1259 #endif
1260 }
1261
1262 /**
1263  * Flush meter configuration.
1264  *
1265  * @param[in] dev
1266  *   Pointer to Ethernet device.
1267  * @param[out] error
1268  *   Pointer to rte meter error structure.
1269  *
1270  * @return
1271  *   0 on success, a negative errno value otherwise and rte_errno is set.
1272  */
1273 int
1274 mlx5_flow_meter_flush(struct rte_eth_dev *dev, struct rte_mtr_error *error)
1275 {
1276         struct mlx5_priv *priv = dev->data->dev_private;
1277         struct mlx5_flow_meters *fms = &priv->flow_meters;
1278         struct mlx5_mtr_profiles *fmps = &priv->flow_meter_profiles;
1279         struct mlx5_flow_meter_profile *fmp;
1280         struct mlx5_flow_meter *fm;
1281         const struct rte_flow_attr attr = {
1282                                 .ingress = 1,
1283                                 .egress = 1,
1284                                 .transfer = priv->config.dv_esw_en ? 1 : 0,
1285                         };
1286         void *tmp;
1287         uint32_t i;
1288
1289         TAILQ_FOREACH_SAFE(fm, fms, next, tmp) {
1290                 /* Meter object must not have any owner. */
1291                 MLX5_ASSERT(!fm->ref_cnt);
1292                 /* Get meter profile. */
1293                 fmp = fm->profile;
1294                 if (fmp == NULL)
1295                         return -rte_mtr_error_set(error, EINVAL,
1296                                 RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
1297                                 NULL, "MTR object meter profile invalid.");
1298                 /* Update dependencies. */
1299                 fmp->ref_cnt--;
1300                 /* Remove from list. */
1301                 TAILQ_REMOVE(fms, fm, next);
1302                 /* Free policer counters. */
1303                 for (i = 0; i < RTE_DIM(fm->policer_stats.cnt); i++)
1304                         if (fm->policer_stats.cnt[i])
1305                                 mlx5_counter_free(dev,
1306                                                   fm->policer_stats.cnt[i]);
1307                 /* Free meter flow table. */
1308                 mlx5_flow_destroy_policer_rules(dev, fm, &attr);
1309                 mlx5_flow_destroy_mtr_tbls(dev, fm->mfts);
1310                 mlx5_ipool_free(priv->sh->ipool[MLX5_IPOOL_MTR], fm->idx);
1311         }
1312         TAILQ_FOREACH_SAFE(fmp, fmps, next, tmp) {
1313                 /* Check unused. */
1314                 MLX5_ASSERT(!fmp->ref_cnt);
1315                 /* Remove from list. */
1316                 TAILQ_REMOVE(&priv->flow_meter_profiles, fmp, next);
1317                 mlx5_free(fmp);
1318         }
1319         return 0;
1320 }