DPDK  22.11.5-rc1
Data Structures | Macros | Enumerations | Functions
rte_mtr.h File Reference
#include <stdint.h>
#include <rte_compat.h>
#include <rte_common.h>
#include <rte_meter.h>
#include <rte_flow.h>

Go to the source code of this file.

Data Structures

struct  rte_mtr_stats
 
struct  rte_mtr_meter_profile
 
struct  rte_mtr_meter_policy_params
 
struct  rte_mtr_params
 
struct  rte_mtr_capabilities
 
struct  rte_mtr_error
 

Macros

#define rte_mtr_policy_pass_color(policy)
 
#define rte_mtr_policy_drop_red(policy)
 

Enumerations

enum  rte_mtr_stats_type {
  RTE_MTR_STATS_N_PKTS_GREEN = 1 << 0, RTE_MTR_STATS_N_PKTS_YELLOW = 1 << 1, RTE_MTR_STATS_N_PKTS_RED = 1 << 2, RTE_MTR_STATS_N_PKTS_DROPPED = 1 << 3,
  RTE_MTR_STATS_N_BYTES_GREEN = 1 << 4, RTE_MTR_STATS_N_BYTES_YELLOW = 1 << 5, RTE_MTR_STATS_N_BYTES_RED = 1 << 6, RTE_MTR_STATS_N_BYTES_DROPPED = 1 << 7
}
 
enum  rte_mtr_algorithm { RTE_MTR_NONE = 0, RTE_MTR_SRTCM_RFC2697, RTE_MTR_TRTCM_RFC2698, RTE_MTR_TRTCM_RFC4115 }
 
enum  rte_mtr_color_in_protocol { RTE_MTR_COLOR_IN_PROTO_OUTER_VLAN = RTE_BIT64(0), RTE_MTR_COLOR_IN_PROTO_INNER_VLAN = RTE_BIT64(1), RTE_MTR_COLOR_IN_PROTO_OUTER_IP = RTE_BIT64(2), RTE_MTR_COLOR_IN_PROTO_INNER_IP = RTE_BIT64(3) }
 
enum  rte_mtr_error_type { RTE_MTR_ERROR_TYPE_NONE, RTE_MTR_ERROR_TYPE_UNSPECIFIED }
 

Functions

__rte_experimental int rte_mtr_capabilities_get (uint16_t port_id, struct rte_mtr_capabilities *cap, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_meter_profile_add (uint16_t port_id, uint32_t meter_profile_id, struct rte_mtr_meter_profile *profile, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_meter_profile_delete (uint16_t port_id, uint32_t meter_profile_id, struct rte_mtr_error *error)
 
__rte_experimental struct rte_flow_meter_profile * rte_mtr_meter_profile_get (uint16_t port_id, uint32_t meter_profile_id, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_meter_policy_validate (uint16_t port_id, struct rte_mtr_meter_policy_params *policy, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_meter_policy_add (uint16_t port_id, uint32_t policy_id, struct rte_mtr_meter_policy_params *policy, struct rte_mtr_error *error)
 
__rte_experimental struct rte_flow_meter_policy * rte_mtr_meter_policy_get (uint16_t port_id, uint32_t policy_id, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_meter_policy_delete (uint16_t port_id, uint32_t policy_id, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_create (uint16_t port_id, uint32_t mtr_id, struct rte_mtr_params *params, int shared, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_destroy (uint16_t port_id, uint32_t mtr_id, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_meter_disable (uint16_t port_id, uint32_t mtr_id, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_meter_enable (uint16_t port_id, uint32_t mtr_id, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_meter_profile_update (uint16_t port_id, uint32_t mtr_id, uint32_t meter_profile_id, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_meter_policy_update (uint16_t port_id, uint32_t mtr_id, uint32_t meter_policy_id, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_meter_dscp_table_update (uint16_t port_id, uint32_t mtr_id, enum rte_mtr_color_in_protocol proto, enum rte_color *dscp_table, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_meter_vlan_table_update (uint16_t port_id, uint32_t mtr_id, enum rte_mtr_color_in_protocol proto, enum rte_color *vlan_table, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_color_in_protocol_set (uint16_t port_id, uint32_t mtr_id, enum rte_mtr_color_in_protocol proto, uint32_t priority, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_color_in_protocol_get (uint16_t port_id, uint32_t mtr_id, uint64_t *proto_mask, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_color_in_protocol_priority_get (uint16_t port_id, uint32_t mtr_id, enum rte_mtr_color_in_protocol proto, uint32_t *priority, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_stats_update (uint16_t port_id, uint32_t mtr_id, uint64_t stats_mask, struct rte_mtr_error *error)
 
__rte_experimental int rte_mtr_stats_read (uint16_t port_id, uint32_t mtr_id, struct rte_mtr_stats *stats, uint64_t *stats_mask, int clear, struct rte_mtr_error *error)
 

Detailed Description

RTE Generic Traffic Metering and Policing API

This interface provides the ability to configure the traffic metering and policing (MTR) in a generic way.

The processing done for each input packet hitting a MTR object is: A) Traffic metering: The packet is assigned a color (the meter output color), based on the previous history of the flow reflected in the current state of the MTR object, according to the specific traffic metering algorithm. The traffic metering algorithm can typically work in color aware mode, in which case the input packet already has an initial color (the input color), or in color blind mode, which is equivalent to considering all input packets initially colored as green. B) Policing: There is a separate policer action configured for each meter output color, which can: a) Drop the packet. b) Keep the same packet color: the policer output color matches the meter output color (essentially a no-op action). c) Recolor the packet: the policer output color is different than the meter output color. The policer output color is the output color of the packet, which is set in the packet meta-data (i.e. struct rte_mbuf::sched::color). C) Statistics: The set of counters maintained for each MTR object is configurable and subject to the implementation support. This set includes the number of packets and bytes dropped or passed for each output color.

Once successfully created, an MTR object is linked to one or several flows through the meter action of the flow API. A) Whether an MTR object is private to a flow or potentially shared by several flows has to be specified at creation time. B) Several meter actions can be potentially registered for the same flow.

Warning
EXPERIMENTAL: this API may change without prior notice

Definition in file rte_mtr.h.

Macro Definition Documentation

◆ rte_mtr_policy_pass_color

#define rte_mtr_policy_pass_color (   policy)

Define meter policy action list: GREEN - GREEN, YELLOW - YELLOW, RED - RED

Definition at line 726 of file rte_mtr.h.

◆ rte_mtr_policy_drop_red

#define rte_mtr_policy_drop_red (   policy)
Value:
struct rte_mtr_meter_policy_params policy = \
{ \
.actions[RTE_COLOR_YELLOW] = NULL, \
.actions[RTE_COLOR_RED] = (struct rte_flow_action[]) { \
{ \
}, \
{ \
}, \
}, \
}
const struct rte_flow_action * actions[RTE_COLORS]
Definition: rte_mtr.h:213
enum rte_flow_action_type type
Definition: rte_flow.h:3675

Define meter policy action list: GREEN - Do nothing, YELLOW - Do nothing, RED - DROP

Definition at line 768 of file rte_mtr.h.

Enumeration Type Documentation

◆ rte_mtr_stats_type

Statistics counter type

Enumerator
RTE_MTR_STATS_N_PKTS_GREEN 

Number of packets passed as green by the policer.

RTE_MTR_STATS_N_PKTS_YELLOW 

Number of packets passed as yellow by the policer.

RTE_MTR_STATS_N_PKTS_RED 

Number of packets passed as red by the policer.

RTE_MTR_STATS_N_PKTS_DROPPED 

Number of packets dropped by the policer.

RTE_MTR_STATS_N_BYTES_GREEN 

Number of bytes passed as green by the policer.

RTE_MTR_STATS_N_BYTES_YELLOW 

Number of bytes passed as yellow by the policer.

RTE_MTR_STATS_N_BYTES_RED 

Number of bytes passed as red by the policer.

RTE_MTR_STATS_N_BYTES_DROPPED 

Number of bytes dropped by the policer.

Definition at line 61 of file rte_mtr.h.

◆ rte_mtr_algorithm

Traffic metering algorithms

Enumerator
RTE_MTR_NONE 

No traffic metering performed, the output color is the same as the input color for every input packet. The meter of the MTR object is working in pass-through mode, having same effect as meter disable.

See also
rte_mtr_meter_disable()
RTE_MTR_SRTCM_RFC2697 

Single Rate Three Color Marker (srTCM) - IETF RFC 2697.

RTE_MTR_TRTCM_RFC2698 

Two Rate Three Color Marker (trTCM) - IETF RFC 2698.

RTE_MTR_TRTCM_RFC4115 

Two Rate Three Color Marker (trTCM) - IETF RFC 4115.

Definition at line 107 of file rte_mtr.h.

◆ rte_mtr_color_in_protocol

Input color protocol method

More than one of the method can be enabled for a given meter. Even if enabled, a method might not be applicable to each input packet, in case the associated protocol header is not present in the packet. The highest priority method that is both enabled for the meter and also applicable for the current input packet wins; if none is both enabled and applicable, the default input color is used.

See also
function rte_mtr_color_in_protocol_set()
Enumerator
RTE_MTR_COLOR_IN_PROTO_OUTER_VLAN 

Enable the detection of the packet input color based on the outermost VLAN header fields DEI (1 bit) and PCP (3 bits). These fields are used as index into the VLAN table.

See also
struct rte_mtr_params::vlan_table
RTE_MTR_COLOR_IN_PROTO_INNER_VLAN 

Enable the detection of the packet input color based on the innermost VLAN header fields DEI (1 bit) and PCP (3 bits). These fields are used as index into the VLAN table.

See also
struct rte_mtr_params::vlan_table
RTE_MTR_COLOR_IN_PROTO_OUTER_IP 

Enable the detection of the packet input color based on the outermost IP DSCP field. These fields are used as index into the DSCP table.

See also
struct rte_mtr_params::dscp_table
RTE_MTR_COLOR_IN_PROTO_INNER_IP 

Enable the detection of the packet input color based on the innermost IP DSCP field. These fields are used as index into the DSCP table.

See also
struct rte_mtr_params::dscp_table

Definition at line 228 of file rte_mtr.h.

◆ rte_mtr_error_type

Verbose error types.

Most of them provide the type of the object referenced by struct rte_mtr_error::cause.

Enumerator
RTE_MTR_ERROR_TYPE_NONE 

No error.

RTE_MTR_ERROR_TYPE_UNSPECIFIED 

Cause unspecified.

Definition at line 527 of file rte_mtr.h.

Function Documentation

◆ rte_mtr_capabilities_get()

__rte_experimental int rte_mtr_capabilities_get ( uint16_t  port_id,
struct rte_mtr_capabilities cap,
struct rte_mtr_error error 
)

MTR capabilities get

Parameters
[in]port_idThe port identifier of the Ethernet device.
[out]capMTR capabilities. Needs to be pre-allocated and valid.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_meter_profile_add()

__rte_experimental int rte_mtr_meter_profile_add ( uint16_t  port_id,
uint32_t  meter_profile_id,
struct rte_mtr_meter_profile profile,
struct rte_mtr_error error 
)

Meter profile add

Create a new meter profile with ID set to meter_profile_id. The new profile is used to create one or several MTR objects.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]meter_profile_idID for the new meter profile. Needs to be unused by any of the existing meter profiles added for the current port.
[in]profileMeter profile parameters. Needs to be pre-allocated and valid.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_meter_profile_delete()

__rte_experimental int rte_mtr_meter_profile_delete ( uint16_t  port_id,
uint32_t  meter_profile_id,
struct rte_mtr_error error 
)

Meter profile delete

Delete an existing meter profile. This operation fails when there is currently at least one user (i.e. MTR object) of this profile.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]meter_profile_idMeter profile ID. Needs to be the valid.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_meter_profile_get()

__rte_experimental struct rte_flow_meter_profile* rte_mtr_meter_profile_get ( uint16_t  port_id,
uint32_t  meter_profile_id,
struct rte_mtr_error error 
)

Meter profile object get

Get meter profile object for a given meter profile ID.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]meter_profile_idMeter profile ID. Needs to be the valid.
[out]errorError details. Filled in only on error, when not NULL.
Returns
A valid handle in case of success, NULL otherwise.

◆ rte_mtr_meter_policy_validate()

__rte_experimental int rte_mtr_meter_policy_validate ( uint16_t  port_id,
struct rte_mtr_meter_policy_params policy,
struct rte_mtr_error error 
)

Check whether a meter policy can be created on a given port.

The meter policy is validated for correctness and whether it could be accepted by the device given sufficient resources. The policy is checked against the current capability information meter_policy_n_max configuration. The policy may also optionally be validated against existing device policy resources. This function has no effect on the target device.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]policyAssociated action list per color. list NULL is legal and means no special action. (list terminated by the END action).
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_meter_policy_add()

__rte_experimental int rte_mtr_meter_policy_add ( uint16_t  port_id,
uint32_t  policy_id,
struct rte_mtr_meter_policy_params policy,
struct rte_mtr_error error 
)

Meter policy add

Create a new meter policy. The new policy is used to create single or multiple MTR objects. The same policy can be used to create multiple MTR objects.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]policy_idPolicy identifier for the new meter policy.
[in]policyAssociated actions per color. list NULL is legal and means no special action. Non-NULL list must be terminated. (list terminated by the END action).
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_meter_policy_get()

__rte_experimental struct rte_flow_meter_policy* rte_mtr_meter_policy_get ( uint16_t  port_id,
uint32_t  policy_id,
struct rte_mtr_error error 
)

Meter policy object get

Get meter policy object for a given meter policy ID.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]policy_idMeter policy ID. Needs to be the valid.
[out]errorError details. Filled in only on error, when not NULL.
Returns
A valid handle in case of success, NULL otherwise.

◆ rte_mtr_meter_policy_delete()

__rte_experimental int rte_mtr_meter_policy_delete ( uint16_t  port_id,
uint32_t  policy_id,
struct rte_mtr_error error 
)

Meter policy delete

Delete an existing meter policy. This operation fails when there is currently at least one user (i.e. MTR object) of this policy.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]policy_idPolicy identifier.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_create()

__rte_experimental int rte_mtr_create ( uint16_t  port_id,
uint32_t  mtr_id,
struct rte_mtr_params params,
int  shared,
struct rte_mtr_error error 
)

MTR object create

Create a new MTR object for the current port. This object is run as part of associated flow action for traffic metering and policing.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID. Needs to be unused by any of the existing MTR objects. created for the current port.
[in]paramsMTR object params. Needs to be pre-allocated and valid.
[in]sharedNon-zero when this MTR object can be shared by multiple flows, zero when this MTR object can be used by a single flow.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.
See also
enum rte_flow_action_type::RTE_FLOW_ACTION_TYPE_METER

◆ rte_mtr_destroy()

__rte_experimental int rte_mtr_destroy ( uint16_t  port_id,
uint32_t  mtr_id,
struct rte_mtr_error error 
)

MTR object destroy

Delete an existing MTR object. This operation fails when there is currently at least one user (i.e. flow) of this MTR object.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID. Needs to be valid. created for the current port.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_meter_disable()

__rte_experimental int rte_mtr_meter_disable ( uint16_t  port_id,
uint32_t  mtr_id,
struct rte_mtr_error error 
)

MTR object meter disable

Disable the meter of an existing MTR object. In disabled state, the meter of the current MTR object works in pass-through mode, meaning that for each input packet the meter output color is always the same as the input color. In particular, when the meter of the current MTR object is configured in color blind mode, the input color is always green, so the meter output color is also always green. Note that the policer and the statistics of the current MTR object are working as usual while the meter is disabled. No action is taken and this function returns successfully when the meter of the current MTR object is already disabled.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_meter_enable()

__rte_experimental int rte_mtr_meter_enable ( uint16_t  port_id,
uint32_t  mtr_id,
struct rte_mtr_error error 
)

MTR object meter enable

Enable the meter of an existing MTR object. If the MTR object has its meter already enabled, then no action is taken and this function returns successfully.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_meter_profile_update()

__rte_experimental int rte_mtr_meter_profile_update ( uint16_t  port_id,
uint32_t  mtr_id,
uint32_t  meter_profile_id,
struct rte_mtr_error error 
)

MTR object meter profile update

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID. Needs to be valid.
[in]meter_profile_idMeter profile ID for the current MTR object. Needs to be valid.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_meter_policy_update()

__rte_experimental int rte_mtr_meter_policy_update ( uint16_t  port_id,
uint32_t  mtr_id,
uint32_t  meter_policy_id,
struct rte_mtr_error error 
)

MTR object meter policy update

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID. Needs to be valid.
[in]meter_policy_idMeter policy ID for the current MTR object. Needs to be valid.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_meter_dscp_table_update()

__rte_experimental int rte_mtr_meter_dscp_table_update ( uint16_t  port_id,
uint32_t  mtr_id,
enum rte_mtr_color_in_protocol  proto,
enum rte_color dscp_table,
struct rte_mtr_error error 
)

MTR object DSCP table update

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID. Needs to be valid.
[in]protoInput color protocol.
[in]dscp_tableWhen non-NULL: it points to a pre-allocated and pre-populated table with exactly 64 elements providing the input color for each value of the IPv4/IPv6 Differentiated Services Code Point (DSCP) input packet field. When NULL: it is equivalent to setting this parameter to an "all-green" populated table (i.e. table with all the 64 elements set to green color).
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_meter_vlan_table_update()

__rte_experimental int rte_mtr_meter_vlan_table_update ( uint16_t  port_id,
uint32_t  mtr_id,
enum rte_mtr_color_in_protocol  proto,
enum rte_color vlan_table,
struct rte_mtr_error error 
)

MTR object VLAN table update

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID. Needs to be valid.
[in]protoInput color protocol.
[in]vlan_tableWhen non-NULL: it points to a pre-allocated and pre-populated table with exactly 16 elements providing the input color for each value of the each value of the DEI(1bit), PCP(3 bits) input packet field. When NULL: it is equivalent to setting this parameter to an "all-green" populated table (i.e. table with all the 16 elements set to green color).
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_color_in_protocol_set()

__rte_experimental int rte_mtr_color_in_protocol_set ( uint16_t  port_id,
uint32_t  mtr_id,
enum rte_mtr_color_in_protocol  proto,
uint32_t  priority,
struct rte_mtr_error error 
)

Set the input color protocol for a given MTR object

More than one of the method can be enabled for a given meter. Even if enabled, a method might not be applicable to each input packet, in case the associated protocol header is not present in the packet. The highest priority method that is both enabled for the meter and also applicable for the current input packet wins; if none is both enabled and applicable, the default input color is used.

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID. Needs to be valid.
[in]protoInput color protocol.
[in]priorityInput color protocol priority. Value zero indicates the highest priority.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_color_in_protocol_get()

__rte_experimental int rte_mtr_color_in_protocol_get ( uint16_t  port_id,
uint32_t  mtr_id,
uint64_t *  proto_mask,
struct rte_mtr_error error 
)

Get the input color protocol for a given MTR object

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID. Needs to be valid.
[out]proto_maskSelected input color protocols as bit mask.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_color_in_protocol_priority_get()

__rte_experimental int rte_mtr_color_in_protocol_priority_get ( uint16_t  port_id,
uint32_t  mtr_id,
enum rte_mtr_color_in_protocol  proto,
uint32_t *  priority,
struct rte_mtr_error error 
)

Get the priority associated with input color protocol for a given MTR object

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID. Needs to be valid.
[in]protoInput color protocol.
[out]priorityInput color protocol priority associated with proto.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.

◆ rte_mtr_stats_update()

__rte_experimental int rte_mtr_stats_update ( uint16_t  port_id,
uint32_t  mtr_id,
uint64_t  stats_mask,
struct rte_mtr_error error 
)

MTR object enabled statistics counters update

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID. Needs to be valid.
[in]stats_maskMask of statistics counter types to be enabled for the current MTR object. Any statistics counter type not included in this set is to be disabled for the current MTR object.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.
See also
enum rte_mtr_stats_type

◆ rte_mtr_stats_read()

__rte_experimental int rte_mtr_stats_read ( uint16_t  port_id,
uint32_t  mtr_id,
struct rte_mtr_stats stats,
uint64_t *  stats_mask,
int  clear,
struct rte_mtr_error error 
)

MTR object statistics counters read

Parameters
[in]port_idThe port identifier of the Ethernet device.
[in]mtr_idMTR object ID. Needs to be valid.
[out]statsWhen non-NULL, it contains the current value for the statistics counters enabled for the current MTR object.
[out]stats_maskWhen non-NULL, it contains the mask of statistics counter types that are currently enabled for this MTR object, indicating which of the counters retrieved with the stats structure are valid.
[in]clearWhen this parameter has a non-zero value, the statistics counters are cleared (i.e. set to zero) immediately after they have been read, otherwise the statistics counters are left untouched.
[out]errorError details. Filled in only on error, when not NULL.
Returns
0 on success, non-zero error code otherwise.
See also
enum rte_mtr_stats_type