#include <rte_dmadev.h>

Data Fields
enum rte_dma_direction	direction

uint16_t	nb_desc

struct rte_dma_port_param	src_port

struct rte_dma_port_param	dst_port

struct rte_dma_auto_free_param	auto_free

struct rte_dma_inter_domain_param	domain

Detailed Description

A structure used to configure a virtual DMA channel.

See also: rte_dma_vchan_setup

Examples: examples/dma/dmafwd.c, and examples/vhost/main.c.

Definition at line 648 of file rte_dmadev.h.

Field Documentation

◆ direction

enum rte_dma_direction direction

Transfer direction

See also: enum rte_dma_direction

Examples: examples/dma/dmafwd.c, and examples/vhost/main.c.

Definition at line 653 of file rte_dmadev.h.

◆ nb_desc

uint16_t nb_desc

Number of descriptor for the virtual DMA channel

Examples: examples/vhost/main.c.

Definition at line 655 of file rte_dmadev.h.

◆ src_port

struct rte_dma_port_param src_port

1) Used to describes the device access port parameter in the device-to-memory transfer scenario. 2) Used to describes the source device access port parameter in the device-to-device transfer scenario.

See also: struct rte_dma_port_param

Definition at line 663 of file rte_dmadev.h.

◆ dst_port

struct rte_dma_port_param dst_port

1) Used to describes the device access port parameter in the memory-to-device transfer scenario. 2) Used to describes the destination device access port parameter in the device-to-device transfer scenario.

See also: struct rte_dma_port_param

Definition at line 671 of file rte_dmadev.h.

◆ auto_free

struct rte_dma_auto_free_param auto_free

Buffer params to auto free buffer by hardware. To free the buffer by hardware, RTE_DMA_OP_FLAG_AUTO_FREE must be set while calling rte_dma_copy and rte_dma_copy_sg().

See also: RTE_DMA_OP_FLAG_AUTO_FREE; struct rte_dma_auto_free_param

Definition at line 679 of file rte_dmadev.h.

◆ domain

struct rte_dma_inter_domain_param domain

Parameters for inter-process or inter-OS domain DMA transfers. This field specifies the source and destination domain handlers required for DMA operations that span across different processes or operating system domains.

See also: RTE_DMA_CAPA_INTER_PROCESS_DOMAIN; RTE_DMA_CAPA_INTER_OS_DOMAIN; struct rte_dma_inter_domain_param

Definition at line 689 of file rte_dmadev.h.

The documentation for this struct was generated from the following file:

lib/dmadev/rte_dmadev.h

Data Fields