ceph/src/spdk/dpdk/lib/librte_ethdev/rte_mtr.h

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright 2017 Intel Corporation
   5  *   Copyright 2017 NXP
   6  *   Copyright 2017 Cavium
   7  *
   8  *   Redistribution and use in source and binary forms, with or without
   9  *   modification, are permitted provided that the following conditions
  10  *   are met:
  11  *
  12  *     * Redistributions of source code must retain the above copyright
  13  *       notice, this list of conditions and the following disclaimer.
  14  *     * Redistributions in binary form must reproduce the above copyright
  15  *       notice, this list of conditions and the following disclaimer in
  16  *       the documentation and/or other materials provided with the
  17  *       distribution.
  18  *     * Neither the name of Intel Corporation nor the names of its
  19  *       contributors may be used to endorse or promote products derived
  20  *       from this software without specific prior written permission.
  21  *
  22  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  23  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  24  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  25  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  26  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  27  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  28  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  29  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  30  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  31  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  32  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  33  */
  34
  35 #ifndef __INCLUDE_RTE_MTR_H__
  36 #define __INCLUDE_RTE_MTR_H__
  37
  38 /**
  39  * @file
  40  * RTE Generic Traffic Metering and Policing API
  41  *
  42  * This interface provides the ability to configure the traffic metering and
  43  * policing (MTR) in a generic way.
  44  *
  45  * The processing done for each input packet hitting a MTR object is:
  46  *    A) Traffic metering: The packet is assigned a color (the meter output
  47  *       color), based on the previous history of the flow reflected in the
  48  *       current state of the MTR object, according to the specific traffic
  49  *       metering algorithm. The traffic metering algorithm can typically work
  50  *       in color aware mode, in which case the input packet already has an
  51  *       initial color (the input color), or in color blind mode, which is
  52  *       equivalent to considering all input packets initially colored as green.
  53  *    B) Policing: There is a separate policer action configured for each meter
  54  *       output color, which can:
  55  *          a) Drop the packet.
  56  *          b) Keep the same packet color: the policer output color matches the
  57  *             meter output color (essentially a no-op action).
  58  *          c) Recolor the packet: the policer output color is different than
  59  *             the meter output color.
  60  *       The policer output color is the output color of the packet, which is
  61  *       set in the packet meta-data (i.e. struct rte_mbuf::sched::color).
  62  *    C) Statistics: The set of counters maintained for each MTR object is
  63  *       configurable and subject to the implementation support. This set
  64  *       includes the number of packets and bytes dropped or passed for each
  65  *       output color.
  66  *
  67  * Once successfully created, an MTR object is linked to one or several flows
  68  * through the meter action of the flow API.
  69  *    A) Whether an MTR object is private to a flow or potentially shared by
  70  *       several flows has to be specified at creation time.
  71  *    B) Several meter actions can be potentially registered for the same flow.
  72  *
  73  * @warning
  74  * @b EXPERIMENTAL: this API may change without prior notice
  75  */
  76 #include <stdint.h>
  77 #include <rte_compat.h>
  78 #include <rte_common.h>
  79
  80 #ifdef __cplusplus
  81 extern "C" {
  82 #endif
  83
  84 /**
  85  * Color
  86  */
  87 enum rte_mtr_color {
  88         RTE_MTR_GREEN = 0, /**< Green */
  89         RTE_MTR_YELLOW, /**< Yellow */
  90         RTE_MTR_RED, /**< Red */
  91         RTE_MTR_COLORS /**< Number of colors. */
  92 };
  93
  94 /**
  95  * Statistics counter type
  96  */
  97 enum rte_mtr_stats_type {
  98         /** Number of packets passed as green by the policer. */
  99         RTE_MTR_STATS_N_PKTS_GREEN = 1 << 0,
 100
 101         /** Number of packets passed as yellow by the policer. */
 102         RTE_MTR_STATS_N_PKTS_YELLOW = 1 << 1,
 103
 104         /** Number of packets passed as red by the policer. */
 105         RTE_MTR_STATS_N_PKTS_RED = 1 << 2,
 106
 107         /** Number of packets dropped by the policer. */
 108         RTE_MTR_STATS_N_PKTS_DROPPED = 1 << 3,
 109
 110         /** Number of bytes passed as green by the policer. */
 111         RTE_MTR_STATS_N_BYTES_GREEN = 1 << 4,
 112
 113         /** Number of bytes passed as yellow by the policer. */
 114         RTE_MTR_STATS_N_BYTES_YELLOW = 1 << 5,
 115
 116         /** Number of bytes passed as red by the policer. */
 117         RTE_MTR_STATS_N_BYTES_RED = 1 << 6,
 118
 119         /** Number of bytes dropped by the policer. */
 120         RTE_MTR_STATS_N_BYTES_DROPPED = 1 << 7,
 121 };
 122
 123 /**
 124  * Statistics counters
 125  */
 126 struct rte_mtr_stats {
 127         /** Number of packets passed by the policer (per color). */
 128         uint64_t n_pkts[RTE_MTR_COLORS];
 129
 130         /** Number of bytes passed by the policer (per color). */
 131         uint64_t n_bytes[RTE_MTR_COLORS];
 132
 133         /** Number of packets dropped by the policer. */
 134         uint64_t n_pkts_dropped;
 135
 136         /** Number of bytes passed by the policer. */
 137         uint64_t n_bytes_dropped;
 138 };
 139
 140 /**
 141  * Traffic metering algorithms
 142  */
 143 enum rte_mtr_algorithm {
 144         /** No traffic metering performed, the output color is the same as the
 145          * input color for every input packet. The meter of the MTR object is
 146          * working in pass-through mode, having same effect as meter disable.
 147          * @see rte_mtr_meter_disable()
 148          */
 149         RTE_MTR_NONE = 0,
 150
 151         /** Single Rate Three Color Marker (srTCM) - IETF RFC 2697. */
 152         RTE_MTR_SRTCM_RFC2697,
 153
 154         /** Two Rate Three Color Marker (trTCM) - IETF RFC 2698. */
 155         RTE_MTR_TRTCM_RFC2698,
 156
 157         /** Two Rate Three Color Marker (trTCM) - IETF RFC 4115. */
 158         RTE_MTR_TRTCM_RFC4115,
 159 };
 160
 161 /**
 162  * Meter profile
 163  */
 164 struct rte_mtr_meter_profile {
 165         /** Traffic metering algorithm. */
 166         enum rte_mtr_algorithm alg;
 167
 168         RTE_STD_C11
 169         union {
 170                 /** Items only valid when *alg* is set to srTCM - RFC 2697. */
 171                 struct {
 172                         /** Committed Information Rate (CIR) (bytes/second). */
 173                         uint64_t cir;
 174
 175                         /** Committed Burst Size (CBS) (bytes). */
 176                         uint64_t cbs;
 177
 178                         /** Excess Burst Size (EBS) (bytes). */
 179                         uint64_t ebs;
 180                 } srtcm_rfc2697;
 181
 182                 /** Items only valid when *alg* is set to trTCM - RFC 2698. */
 183                 struct {
 184                         /** Committed Information Rate (CIR) (bytes/second). */
 185                         uint64_t cir;
 186
 187                         /** Peak Information Rate (PIR) (bytes/second). */
 188                         uint64_t pir;
 189
 190                         /** Committed Burst Size (CBS) (byes). */
 191                         uint64_t cbs;
 192
 193                         /** Peak Burst Size (PBS) (bytes). */
 194                         uint64_t pbs;
 195                 } trtcm_rfc2698;
 196
 197                 /** Items only valid when *alg* is set to trTCM - RFC 4115. */
 198                 struct {
 199                         /** Committed Information Rate (CIR) (bytes/second). */
 200                         uint64_t cir;
 201
 202                         /** Excess Information Rate (EIR) (bytes/second). */
 203                         uint64_t eir;
 204
 205                         /** Committed Burst Size (CBS) (byes). */
 206                         uint64_t cbs;
 207
 208                         /** Excess Burst Size (EBS) (bytes). */
 209                         uint64_t ebs;
 210                 } trtcm_rfc4115;
 211         };
 212 };
 213
 214 /**
 215  * Policer actions
 216  */
 217 enum rte_mtr_policer_action {
 218         /** Recolor the packet as green. */
 219         MTR_POLICER_ACTION_COLOR_GREEN = 0,
 220
 221         /** Recolor the packet as yellow. */
 222         MTR_POLICER_ACTION_COLOR_YELLOW,
 223
 224         /** Recolor the packet as red. */
 225         MTR_POLICER_ACTION_COLOR_RED,
 226
 227         /** Drop the packet. */
 228         MTR_POLICER_ACTION_DROP,
 229 };
 230
 231 /**
 232  * Parameters for each traffic metering & policing object
 233  *
 234  * @see enum rte_mtr_stats_type
 235  */
 236 struct rte_mtr_params {
 237         /** Meter profile ID. */
 238         uint32_t meter_profile_id;
 239
 240         /** Meter input color in case of MTR object chaining. When non-zero: if
 241          * a previous MTR object is enabled in the same flow, then the color
 242          * determined by the latest MTR object in the same flow is used as the
 243          * input color by the current MTR object, otherwise the current MTR
 244          * object uses the *dscp_table* to determine the input color. When zero:
 245          * the color determined by any previous MTR object in same flow is
 246          * ignored by the current MTR object, which uses the *dscp_table* to
 247          * determine the input color.
 248          */
 249         int use_prev_mtr_color;
 250
 251         /** Meter input color. When non-NULL: it points to a pre-allocated and
 252          * pre-populated table with exactly 64 elements providing the input
 253          * color for each value of the IPv4/IPv6 Differentiated Services Code
 254          * Point (DSCP) input packet field. When NULL: it is equivalent to
 255          * setting this parameter to an all-green populated table (i.e. table
 256          * with all the 64 elements set to green color). The color blind mode
 257          * is configured by setting *use_prev_mtr_color* to 0 and *dscp_table*
 258          * to either NULL or to an all-green populated table. When
 259          * *use_prev_mtr_color* is non-zero value or when *dscp_table* contains
 260          * at least one yellow or red color element, then the color aware mode
 261          * is configured.
 262          */
 263         enum rte_mtr_color *dscp_table;
 264
 265         /** Non-zero to enable the meter, zero to disable the meter at the time
 266          * of MTR object creation. Ignored when the meter profile indicated by
 267          * *meter_profile_id* is set to NONE.
 268          * @see rte_mtr_meter_disable()
 269          */
 270         int meter_enable;
 271
 272         /** Policer actions (per meter output color). */
 273         enum rte_mtr_policer_action action[RTE_MTR_COLORS];
 274
 275         /** Set of stats counters to be enabled.
 276          * @see enum rte_mtr_stats_type
 277          */
 278         uint64_t stats_mask;
 279 };
 280
 281 /**
 282  * MTR capabilities
 283  */
 284 struct rte_mtr_capabilities {
 285         /** Maximum number of MTR objects. */
 286         uint32_t n_max;
 287
 288         /** Maximum number of MTR objects that can be shared by multiple flows.
 289          * The value of zero indicates that shared MTR objects are not
 290          * supported. The maximum value is *n_max*.
 291          */
 292         uint32_t n_shared_max;
 293
 294         /** When non-zero, this flag indicates that all the MTR objects that
 295          * cannot be shared by multiple flows have identical capability set.
 296          */
 297         int identical;
 298
 299         /** When non-zero, this flag indicates that all the MTR objects that
 300          * can be shared by multiple flows have identical capability set.
 301          */
 302         int shared_identical;
 303
 304         /** Maximum number of flows that can share the same MTR object. The
 305          * value of zero is invalid. The value of 1 means that shared MTR
 306          * objects not supported.
 307          */
 308         uint32_t shared_n_flows_per_mtr_max;
 309
 310         /** Maximum number of MTR objects that can be part of the same flow. The
 311          * value of zero is invalid. The value of 1 indicates that MTR object
 312          * chaining is not supported. The maximum value is *n_max*.
 313          */
 314         uint32_t chaining_n_mtrs_per_flow_max;
 315
 316         /**
 317          * When non-zero, it indicates that the packet color identified by one
 318          * MTR object can be used as the packet input color by any subsequent
 319          * MTR object from the same flow. When zero, it indicates that the color
 320          * determined by one MTR object is always ignored by any subsequent MTR
 321          * object from the same flow. Only valid when MTR chaining is supported,
 322          * i.e. *chaining_n_mtrs_per_flow_max* is greater than 1. When non-zero,
 323          * it also means that the color aware mode is supported by at least one
 324          * metering algorithm.
 325          */
 326         int chaining_use_prev_mtr_color_supported;
 327
 328         /**
 329          * When non-zero, it indicates that the packet color identified by one
 330          * MTR object is always used as the packet input color by any subsequent
 331          * MTR object that is part of the same flow. When zero, it indicates
 332          * that whether the color determined by one MTR object is either ignored
 333          * or used as the packet input color by any subsequent MTR object from
 334          * the same flow is individually configurable for each MTR object. Only
 335          * valid when *chaining_use_prev_mtr_color_supported* is non-zero.
 336          */
 337         int chaining_use_prev_mtr_color_enforced;
 338
 339         /** Maximum number of MTR objects that can have their meter configured
 340          * to run the srTCM RFC 2697 algorithm. The value of 0 indicates this
 341          * metering algorithm is not supported. The maximum value is *n_max*.
 342          */
 343         uint32_t meter_srtcm_rfc2697_n_max;
 344
 345         /** Maximum number of MTR objects that can have their meter configured
 346          * to run the trTCM RFC 2698 algorithm. The value of 0 indicates this
 347          * metering algorithm is not supported. The maximum value is *n_max*.
 348          */
 349         uint32_t meter_trtcm_rfc2698_n_max;
 350
 351         /** Maximum number of MTR objects that can have their meter configured
 352          * to run the trTCM RFC 4115 algorithm. The value of 0 indicates this
 353          * metering algorithm is not supported. The maximum value is *n_max*.
 354          */
 355         uint32_t meter_trtcm_rfc4115_n_max;
 356
 357         /** Maximum traffic rate that can be metered by a single MTR object. For
 358          * srTCM RFC 2697, this is the maximum CIR rate. For trTCM RFC 2698,
 359          * this is the maximum PIR rate. For trTCM RFC 4115, this is the maximum
 360          * value for the sum of PIR and EIR rates.
 361          */
 362         uint64_t meter_rate_max;
 363
 364         /**
 365          * When non-zero, it indicates that color aware mode is supported for
 366          * the srTCM RFC 2697 metering algorithm.
 367          */
 368         int color_aware_srtcm_rfc2697_supported;
 369
 370         /**
 371          * When non-zero, it indicates that color aware mode is supported for
 372          * the trTCM RFC 2698 metering algorithm.
 373          */
 374         int color_aware_trtcm_rfc2698_supported;
 375
 376         /**
 377          * When non-zero, it indicates that color aware mode is supported for
 378          * the trTCM RFC 4115 metering algorithm.
 379          */
 380         int color_aware_trtcm_rfc4115_supported;
 381
 382         /** When non-zero, it indicates that the policer packet recolor actions
 383          * are supported.
 384          * @see enum rte_mtr_policer_action
 385          */
 386         int policer_action_recolor_supported;
 387
 388         /** When non-zero, it indicates that the policer packet drop action is
 389          * supported.
 390          * @see enum rte_mtr_policer_action
 391          */
 392         int policer_action_drop_supported;
 393
 394         /** Set of supported statistics counter types.
 395          * @see enum rte_mtr_stats_type
 396          */
 397         uint64_t stats_mask;
 398 };
 399
 400 /**
 401  * Verbose error types.
 402  *
 403  * Most of them provide the type of the object referenced by struct
 404  * rte_mtr_error::cause.
 405  */
 406 enum rte_mtr_error_type {
 407         RTE_MTR_ERROR_TYPE_NONE, /**< No error. */
 408         RTE_MTR_ERROR_TYPE_UNSPECIFIED, /**< Cause unspecified. */
 409         RTE_MTR_ERROR_TYPE_METER_PROFILE_ID,
 410         RTE_MTR_ERROR_TYPE_METER_PROFILE,
 411         RTE_MTR_ERROR_TYPE_MTR_ID,
 412         RTE_MTR_ERROR_TYPE_MTR_PARAMS,
 413         RTE_MTR_ERROR_TYPE_POLICER_ACTION_GREEN,
 414         RTE_MTR_ERROR_TYPE_POLICER_ACTION_YELLOW,
 415         RTE_MTR_ERROR_TYPE_POLICER_ACTION_RED,
 416         RTE_MTR_ERROR_TYPE_STATS_MASK,
 417         RTE_MTR_ERROR_TYPE_STATS,
 418         RTE_MTR_ERROR_TYPE_SHARED,
 419 };
 420
 421 /**
 422  * Verbose error structure definition.
 423  *
 424  * This object is normally allocated by applications and set by PMDs, the
 425  * message points to a constant string which does not need to be freed by
 426  * the application, however its pointer can be considered valid only as long
 427  * as its associated DPDK port remains configured. Closing the underlying
 428  * device or unloading the PMD invalidates it.
 429  *
 430  * Both cause and message may be NULL regardless of the error type.
 431  */
 432 struct rte_mtr_error {
 433         enum rte_mtr_error_type type; /**< Cause field and error type. */
 434         const void *cause; /**< Object responsible for the error. */
 435         const char *message; /**< Human-readable error message. */
 436 };
 437
 438 /**
 439  * MTR capabilities get
 440  *
 441  * @param[in] port_id
 442  *   The port identifier of the Ethernet device.
 443  * @param[out] cap
 444  *   MTR capabilities. Needs to be pre-allocated and valid.
 445  * @param[out] error
 446  *   Error details. Filled in only on error, when not NULL.
 447  * @return
 448  *   0 on success, non-zero error code otherwise.
 449  */
 450 int __rte_experimental
 451 rte_mtr_capabilities_get(uint16_t port_id,
 452         struct rte_mtr_capabilities *cap,
 453         struct rte_mtr_error *error);
 454
 455 /**
 456  * Meter profile add
 457  *
 458  * Create a new meter profile with ID set to *meter_profile_id*. The new profile
 459  * is used to create one or several MTR objects.
 460  *
 461  * @param[in] port_id
 462  *   The port identifier of the Ethernet device.
 463  * @param[in] meter_profile_id
 464  *   ID for the new meter profile. Needs to be unused by any of the existing
 465  *   meter profiles added for the current port.
 466  * @param[in] profile
 467  *   Meter profile parameters. Needs to be pre-allocated and valid.
 468  * @param[out] error
 469  *   Error details. Filled in only on error, when not NULL.
 470  * @return
 471  *   0 on success, non-zero error code otherwise.
 472  */
 473 int __rte_experimental
 474 rte_mtr_meter_profile_add(uint16_t port_id,
 475         uint32_t meter_profile_id,
 476         struct rte_mtr_meter_profile *profile,
 477         struct rte_mtr_error *error);
 478
 479 /**
 480  * Meter profile delete
 481  *
 482  * Delete an existing meter profile. This operation fails when there is
 483  * currently at least one user (i.e. MTR object) of this profile.
 484  *
 485  * @param[in] port_id
 486  *   The port identifier of the Ethernet device.
 487  * @param[in] meter_profile_id
 488  *   Meter profile ID. Needs to be the valid.
 489  * @param[out] error
 490  *   Error details. Filled in only on error, when not NULL.
 491  * @return
 492  *   0 on success, non-zero error code otherwise.
 493  */
 494 int __rte_experimental
 495 rte_mtr_meter_profile_delete(uint16_t port_id,
 496         uint32_t meter_profile_id,
 497         struct rte_mtr_error *error);
 498
 499 /**
 500  * MTR object create
 501  *
 502  * Create a new MTR object for the current port. This object is run as part of
 503  * associated flow action for traffic metering and policing.
 504  *
 505  * @param[in] port_id
 506  *   The port identifier of the Ethernet device.
 507  * @param[in] mtr_id
 508  *   MTR object ID. Needs to be unused by any of the existing MTR objects.
 509  *   created for the current port.
 510  * @param[in] params
 511  *   MTR object params. Needs to be pre-allocated and valid.
 512  * @param[in] shared
 513  *   Non-zero when this MTR object can be shared by multiple flows, zero when
 514  *   this MTR object can be used by a single flow.
 515  * @param[out] error
 516  *   Error details. Filled in only on error, when not NULL.
 517  * @return
 518  *   0 on success, non-zero error code otherwise.
 519  *
 520  * @see enum rte_flow_action_type::RTE_FLOW_ACTION_TYPE_METER
 521  */
 522 int __rte_experimental
 523 rte_mtr_create(uint16_t port_id,
 524         uint32_t mtr_id,
 525         struct rte_mtr_params *params,
 526         int shared,
 527         struct rte_mtr_error *error);
 528
 529 /**
 530  * MTR object destroy
 531  *
 532  * Delete an existing MTR object. This operation fails when there is currently
 533  * at least one user (i.e. flow) of this MTR object.
 534  *
 535  * @param[in] port_id
 536  *   The port identifier of the Ethernet device.
 537  * @param[in] mtr_id
 538  *   MTR object ID. Needs to be valid.
 539  *   created for the current port.
 540  * @param[out] error
 541  *   Error details. Filled in only on error, when not NULL.
 542  * @return
 543  *   0 on success, non-zero error code otherwise.
 544  */
 545 int __rte_experimental
 546 rte_mtr_destroy(uint16_t port_id,
 547         uint32_t mtr_id,
 548         struct rte_mtr_error *error);
 549
 550 /**
 551  * MTR object meter disable
 552  *
 553  * Disable the meter of an existing MTR object. In disabled state, the meter of
 554  * the current MTR object works in pass-through mode, meaning that for each
 555  * input packet the meter output color is always the same as the input color. In
 556  * particular, when the meter of the current MTR object is configured in color
 557  * blind mode, the input color is always green, so the meter output color is
 558  * also always green. Note that the policer and the statistics of the current
 559  * MTR object are working as usual while the meter is disabled. No action is
 560  * taken and this function returns successfully when the meter of the current
 561  * MTR object is already disabled.
 562  *
 563  * @param[in] port_id
 564  *   The port identifier of the Ethernet device.
 565  * @param[in] mtr_id
 566  *   MTR object ID.
 567  * @param[out] error
 568  *   Error details. Filled in only on error, when not NULL.
 569  * @return
 570  *   0 on success, non-zero error code otherwise.
 571  */
 572 int __rte_experimental
 573 rte_mtr_meter_disable(uint16_t port_id,
 574         uint32_t mtr_id,
 575         struct rte_mtr_error *error);
 576
 577 /**
 578  * MTR object meter enable
 579  *
 580  * Enable the meter of an existing MTR object. If the MTR object has its meter
 581  * already enabled, then no action is taken and this function returns
 582  * successfully.
 583  *
 584  * @param[in] port_id
 585  *   The port identifier of the Ethernet device.
 586  * @param[in] mtr_id
 587  *   MTR object ID.
 588  * @param[out] error
 589  *   Error details. Filled in only on error, when not NULL.
 590  * @return
 591  *   0 on success, non-zero error code otherwise.
 592  */
 593 int __rte_experimental
 594 rte_mtr_meter_enable(uint16_t port_id,
 595         uint32_t mtr_id,
 596         struct rte_mtr_error *error);
 597
 598 /**
 599  * MTR object meter profile update
 600  *
 601  * @param[in] port_id
 602  *   The port identifier of the Ethernet device.
 603  * @param[in] mtr_id
 604  *   MTR object ID. Needs to be valid.
 605  * @param[in] meter_profile_id
 606  *   Meter profile ID for the current MTR object. Needs to be valid.
 607  * @param[out] error
 608  *   Error details. Filled in only on error, when not NULL.
 609  * @return
 610  *   0 on success, non-zero error code otherwise.
 611  */
 612 int __rte_experimental
 613 rte_mtr_meter_profile_update(uint16_t port_id,
 614         uint32_t mtr_id,
 615         uint32_t meter_profile_id,
 616         struct rte_mtr_error *error);
 617
 618 /**
 619  * MTR object DSCP table update
 620  *
 621  * @param[in] port_id
 622  *   The port identifier of the Ethernet device.
 623  * @param[in] mtr_id
 624  *   MTR object ID. Needs to be valid.
 625  * @param[in] dscp_table
 626  *   When non-NULL: it points to a pre-allocated and pre-populated table with
 627  *   exactly 64 elements providing the input color for each value of the
 628  *   IPv4/IPv6 Differentiated Services Code Point (DSCP) input packet field.
 629  *   When NULL: it is equivalent to setting this parameter to an “all-green”
 630  *   populated table (i.e. table with all the 64 elements set to green color).
 631  * @param[out] error
 632  *   Error details. Filled in only on error, when not NULL.
 633  * @return
 634  *   0 on success, non-zero error code otherwise.
 635  */
 636 int __rte_experimental
 637 rte_mtr_meter_dscp_table_update(uint16_t port_id,
 638         uint32_t mtr_id,
 639         enum rte_mtr_color *dscp_table,
 640         struct rte_mtr_error *error);
 641
 642 /**
 643  * MTR object policer actions update
 644  *
 645  * @param[in] port_id
 646  *   The port identifier of the Ethernet device.
 647  * @param[in] mtr_id
 648  *   MTR object ID. Needs to be valid.
 649  * @param[in] action_mask
 650  *   Bit mask indicating which policer actions need to be updated. One or more
 651  *   policer actions can be updated in a single function invocation. To update
 652  *   the policer action associated with color C, bit (1 << C) needs to be set in
 653  *   *action_mask* and element at position C in the *actions* array needs to be
 654  *   valid.
 655  * @param[in] actions
 656  *   Pre-allocated and pre-populated array of policer actions.
 657  * @param[out] error
 658  *   Error details. Filled in only on error, when not NULL.
 659  * @return
 660  *   0 on success, non-zero error code otherwise.
 661  */
 662 int __rte_experimental
 663 rte_mtr_policer_actions_update(uint16_t port_id,
 664         uint32_t mtr_id,
 665         uint32_t action_mask,
 666         enum rte_mtr_policer_action *actions,
 667         struct rte_mtr_error *error);
 668
 669 /**
 670  * MTR object enabled statistics counters update
 671  *
 672  * @param[in] port_id
 673  *   The port identifier of the Ethernet device.
 674  * @param[in] mtr_id
 675  *   MTR object ID. Needs to be valid.
 676  * @param[in] stats_mask
 677  *   Mask of statistics counter types to be enabled for the current MTR object.
 678  *   Any statistics counter type not included in this set is to be disabled for
 679  *   the current MTR object.
 680  * @param[out] error
 681  *   Error details. Filled in only on error, when not NULL.
 682  * @return
 683  *   0 on success, non-zero error code otherwise.
 684  *
 685  * @see enum rte_mtr_stats_type
 686  */
 687 int __rte_experimental
 688 rte_mtr_stats_update(uint16_t port_id,
 689         uint32_t mtr_id,
 690         uint64_t stats_mask,
 691         struct rte_mtr_error *error);
 692
 693 /**
 694  * MTR object statistics counters read
 695  *
 696  * @param[in] port_id
 697  *   The port identifier of the Ethernet device.
 698  * @param[in] mtr_id
 699  *   MTR object ID. Needs to be valid.
 700  * @param[out] stats
 701  *   When non-NULL, it contains the current value for the statistics counters
 702  *   enabled for the current MTR object.
 703  * @param[out] stats_mask
 704  *   When non-NULL, it contains the mask of statistics counter types that are
 705  *   currently enabled for this MTR object, indicating which of the counters
 706  *   retrieved with the *stats* structure are valid.
 707  * @param[in] clear
 708  *   When this parameter has a non-zero value, the statistics counters are
 709  *   cleared (i.e. set to zero) immediately after they have been read,
 710  *   otherwise the statistics counters are left untouched.
 711  * @param[out] error
 712  *   Error details. Filled in only on error, when not NULL.
 713  * @return
 714  *   0 on success, non-zero error code otherwise.
 715  *
 716  * @see enum rte_mtr_stats_type
 717  */
 718 int __rte_experimental
 719 rte_mtr_stats_read(uint16_t port_id,
 720         uint32_t mtr_id,
 721         struct rte_mtr_stats *stats,
 722         uint64_t *stats_mask,
 723         int clear,
 724         struct rte_mtr_error *error);
 725
 726 #ifdef __cplusplus
 727 }
 728 #endif
 729
 730 #endif /* __INCLUDE_RTE_MTR_H__ */