#include <stdint.h>
#include <rte_compat.h>
#include <rte_log.h>
#include <rte_power.h>

Enumerations
enum	rte_power_pmd_mgmt_type { RTE_POWER_MGMT_TYPE_MONITOR = 1 , RTE_POWER_MGMT_TYPE_PAUSE , RTE_POWER_MGMT_TYPE_SCALE }

Functions
__rte_experimental int	rte_power_ethdev_pmgmt_queue_enable (unsigned int lcore_id, uint16_t port_id, uint16_t queue_id, enum rte_power_pmd_mgmt_type mode)

__rte_experimental int	rte_power_ethdev_pmgmt_queue_disable (unsigned int lcore_id, uint16_t port_id, uint16_t queue_id)

__rte_experimental void	rte_power_pmd_mgmt_set_emptypoll_max (unsigned int max)

__rte_experimental unsigned int	rte_power_pmd_mgmt_get_emptypoll_max (void)

__rte_experimental int	rte_power_pmd_mgmt_set_pause_duration (unsigned int duration)

__rte_experimental unsigned int	rte_power_pmd_mgmt_get_pause_duration (void)

__rte_experimental int	rte_power_pmd_mgmt_set_scaling_freq_min (unsigned int lcore, unsigned int min)

__rte_experimental int	rte_power_pmd_mgmt_set_scaling_freq_max (unsigned int lcore, unsigned int max)

__rte_experimental int	rte_power_pmd_mgmt_get_scaling_freq_min (unsigned int lcore)

__rte_experimental int	rte_power_pmd_mgmt_get_scaling_freq_max (unsigned int lcore)

Detailed Description

RTE PMD Power Management

Definition in file rte_power_pmd_mgmt.h.

Enumeration Type Documentation

◆ rte_power_pmd_mgmt_type

enum rte_power_pmd_mgmt_type

PMD Power Management Type

Enumerator
RTE_POWER_MGMT_TYPE_MONITOR	Use power-optimized monitoring to wait for incoming traffic
RTE_POWER_MGMT_TYPE_PAUSE	Use power-optimized sleep to avoid busy polling
RTE_POWER_MGMT_TYPE_SCALE	Use frequency scaling when traffic is low

Definition at line 26 of file rte_power_pmd_mgmt.h.

Function Documentation

◆ rte_power_ethdev_pmgmt_queue_enable()

__rte_experimental int rte_power_ethdev_pmgmt_queue_enable	(	unsigned int	lcore_id,
		uint16_t	port_id,
		uint16_t	queue_id,
		enum rte_power_pmd_mgmt_type	mode
	)

Warning: EXPERIMENTAL: this API may change, or be removed, without prior notice.

Enable power management on a specified Ethernet device Rx queue and lcore.

Note: This function is not thread-safe.

Warning: This function must be called when all affected Ethernet queues are stopped and no Rx/Tx is in progress!

Parameters

lcore_id	The lcore the Rx queue will be polled from.
port_id	The port identifier of the Ethernet device.
queue_id	The queue identifier of the Ethernet device.
mode	The power management scheme to use for specified Rx queue.

Returns: 0 on success <0 on error

Examples: examples/l3fwd-power/main.c.

◆ rte_power_ethdev_pmgmt_queue_disable()

__rte_experimental int rte_power_ethdev_pmgmt_queue_disable	(	unsigned int	lcore_id,
		uint16_t	port_id,
		uint16_t	queue_id
	)

Warning: EXPERIMENTAL: this API may change, or be removed, without prior notice.

Disable power management on a specified Ethernet device Rx queue and lcore.

Note: This function is not thread-safe.

Warning: This function must be called when all affected Ethernet queues are stopped and no Rx/Tx is in progress!

Parameters

lcore_id	The lcore the Rx queue is polled from.
port_id	The port identifier of the Ethernet device.
queue_id	The queue identifier of the Ethernet device.

Returns: 0 on success <0 on error

Examples: examples/l3fwd-power/main.c.

◆ rte_power_pmd_mgmt_set_emptypoll_max()

__rte_experimental void rte_power_pmd_mgmt_set_emptypoll_max ( unsigned int max )

Warning: EXPERIMENTAL: this API may change, or be removed, without prior notice.

Set a emptypoll_max to specified value. Used to specify the number of empty polls to wait before entering sleep state.

Parameters

max	The value to set emptypoll_max to.

Examples: examples/l3fwd-power/main.c.

◆ rte_power_pmd_mgmt_get_emptypoll_max()

__rte_experimental unsigned int rte_power_pmd_mgmt_get_emptypoll_max ( void )

Warning: EXPERIMENTAL: this API may change, or be removed, without prior notice.

Get the current value of emptypoll_max.

Returns: The current emptypoll_max value

◆ rte_power_pmd_mgmt_set_pause_duration()

__rte_experimental int rte_power_pmd_mgmt_set_pause_duration ( unsigned int duration )

Warning: EXPERIMENTAL: this API may change, or be removed, without prior notice.

Set the pause_duration. Used to adjust the pause mode callback duration.

Note: Duration must be greater than zero.

Parameters

duration The value to set pause_duration to.

Returns: 0 on success <0 on error

Examples: examples/l3fwd-power/main.c.

◆ rte_power_pmd_mgmt_get_pause_duration()

__rte_experimental unsigned int rte_power_pmd_mgmt_get_pause_duration ( void )

Warning: EXPERIMENTAL: this API may change, or be removed, without prior notice.

Get the current value of pause_duration.

Returns: The current pause_duration value.

◆ rte_power_pmd_mgmt_set_scaling_freq_min()

__rte_experimental int rte_power_pmd_mgmt_set_scaling_freq_min	(	unsigned int	lcore,
		unsigned int	min
	)

Warning: EXPERIMENTAL: this API may change, or be removed, without prior notice.

Set the min frequency to be used for frequency scaling or zero to use defaults.

Note: Supported by: Pstate mode.

Parameters

lcore	The ID of the lcore to set the min frequency for.
min	The value, in KiloHertz, to set the minimum frequency to.

Returns: 0 on success <0 on error

Examples: examples/l3fwd-power/main.c.

◆ rte_power_pmd_mgmt_set_scaling_freq_max()

__rte_experimental int rte_power_pmd_mgmt_set_scaling_freq_max	(	unsigned int	lcore,
		unsigned int	max
	)

Warning: EXPERIMENTAL: this API may change, or be removed, without prior notice.

Set the max frequency to be used for frequency scaling or zero to use defaults.

Note: Supported by: Pstate mode.

Parameters

lcore	The ID of the lcore to set the max frequency for.
max	The value, in KiloHertz, to set the maximum frequency to. If 'max' is 0, it is considered 'not set'.

Returns: 0 on success <0 on error

Examples: examples/l3fwd-power/main.c.

◆ rte_power_pmd_mgmt_get_scaling_freq_min()

__rte_experimental int rte_power_pmd_mgmt_get_scaling_freq_min ( unsigned int lcore )

Warning: EXPERIMENTAL: this API may change, or be removed, without prior notice.

Get the current configured min frequency used for frequency scaling.

Note: Supported by: Pstate mode.

Parameters

lcore The ID of the lcore to get the min frequency for.

Returns: 0 if no value has been configured via the 'set' API. >0 if a minimum frequency has been configured. Value is the minimum frequency , in KiloHertz, used for frequency scaling. <0 on error

◆ rte_power_pmd_mgmt_get_scaling_freq_max()

__rte_experimental int rte_power_pmd_mgmt_get_scaling_freq_max ( unsigned int lcore )

Warning: EXPERIMENTAL: this API may change, or be removed, without prior notice.

Get the current configured max frequency used for frequency scaling.

Note: Supported by: Pstate mode.

Parameters

lcore The ID of the lcore to get the max frequency for.

Returns: 0 if no value has been configured via the 'set' API. >0 if a maximum frequency has been configured. Value is the maximum frequency , in KiloHertz, used for frequency scaling. <0 on error

Enumerations

Functions

Detailed Description

Enumeration Type Documentation

◆ rte_power_pmd_mgmt_type

Function Documentation

◆ rte_power_ethdev_pmgmt_queue_enable()

◆ rte_power_ethdev_pmgmt_queue_disable()

◆ rte_power_pmd_mgmt_set_emptypoll_max()

◆ rte_power_pmd_mgmt_get_emptypoll_max()

◆ rte_power_pmd_mgmt_set_pause_duration()

◆ rte_power_pmd_mgmt_get_pause_duration()

◆ rte_power_pmd_mgmt_set_scaling_freq_min()

◆ rte_power_pmd_mgmt_set_scaling_freq_max()

◆ rte_power_pmd_mgmt_get_scaling_freq_min()

◆ rte_power_pmd_mgmt_get_scaling_freq_max()