cne_system.h File Reference

#include <sys/syscall.h>
#include <stdint.h>
#include <cne_common.h>

Go to the source code of this file.

Functions
CNDP_API unsigned	cne_core_id (unsigned lcore_id)
CNDP_API unsigned int	cne_max_lcores (void)
CNDP_API int	cne_max_numa_nodes (void)
CNDP_API int	cne_lcore_id (void)
CNDP_API int	cne_lcore_id_by_thread (int thread_idx)
CNDP_API unsigned int	cne_socket_id (unsigned lcore_id)
CNDP_API unsigned int	cne_socket_id_self (void)
CNDP_API uint16_t	cne_device_socket_id (char *netdev)
CNDP_API unsigned int	cne_socket_count (void)
CNDP_API uint64_t	cne_get_timer_hz (void)

Detailed Description

API for lcore and socket manipulation

Definition in file cne_system.h.

Function Documentation

cne_core_id()

CNDP_API unsigned cne_core_id

(

unsigned

lcore_id

)

Get cpu core_id base in lcore ID value from /sys/.../cpuX path.

This function is private to the CNE.

Parameters

lcore_id

The lcore ID value to location.

cne_max_lcores()

CNDP_API unsigned int cne_max_lcores

(

void

)

Return the number of execution units (lcores) on the system.

Returns

the number of execution units (lcores) on the system.

Examples

examples/dlb_test/dlb_test.c, and examples/helloworld/main.c.

cne_max_numa_nodes()

CNDP_API int cne_max_numa_nodes

(

void

)

Return the number of NUMA zones.

Returns

The number of numa zones.

Examples

examples/dlb_test/dlb_test.c, and examples/helloworld/main.c.

cne_lcore_id()

CNDP_API int cne_lcore_id

(

void

)

Return the lcore ID of the current running thread.

Returns

-1 on error or lcore id

Examples

examples/cndpfwd/main.c, examples/cnet-graph/cnet-graph.c, examples/cnet-quic/cnet-quic.c, examples/dlb_test/dlb_test.c, examples/l3fwd-graph/fwd.c, examples/phil/main.c, and examples/timer/main.c.

cne_lcore_id_by_thread()

CNDP_API int cne_lcore_id_by_thread

(

int

thread_idx

)

Return the lcore ID of the given thread id.

Parameters

thread_idx

Thread id to get find the lcore id

Returns

-1 on error or lcore id value

cne_socket_id()

CNDP_API unsigned int cne_socket_id

(

unsigned

lcore_id

)

Return the ID of the physical socket of the logical core we are running on.

Parameters

lcore_id

The lcore ID value to use to return the socket ID.

Returns

The ID of current lcore id's physical socket

cne_socket_id_self()

CNDP_API unsigned int cne_socket_id_self

(

void

)

Return the socket id for the current lcore

Returns

The ID of the socket for the current lcore

cne_device_socket_id()

CNDP_API uint16_t cne_device_socket_id

(

char *

netdev

)

Return the socket id for the given netdev name

Parameters

netdev

The netdev name string.

Returns

The ID of the socket for the given netdev name or -1 if not found.

cne_socket_count()

CNDP_API unsigned int cne_socket_count

(

void

)

Return number of physical sockets detected on the system.

Note that number of nodes may not be correspondent to their physical id's: for example, a system may report two socket id's, but the actual socket id's may be 0 and 8.

Returns

the number of physical sockets as recognized by CNE

cne_get_timer_hz()

CNDP_API uint64_t cne_get_timer_hz

(

void

)

Get the measured frequency of the RDTSC counter

Returns

The TSC frequency for this lcore

Examples

examples/timer/main.c.