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rte_dma_vchan_conf(3) DPDK rte_dma_vchan_conf(3) NAME rte_dma_vchan_conf SYNOPSIS #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 Definition at line 649 of file rte_dmadev.h. Field Documentation enum rte_dma_direction direction Transfer direction See also enum rte_dma_direction Definition at line 654 of file rte_dmadev.h. uint16_t nb_desc Number of descriptor for the virtual DMA channel Definition at line 656 of file rte_dmadev.h. 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 664 of file rte_dmadev.h. 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 672 of file rte_dmadev.h. 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 680 of file rte_dmadev.h. 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 690 of file rte_dmadev.h. Author Generated automatically by Doxygen for DPDK from the source code. Version 25.11.0 Thu Jun 11 2026 rte_dma_vchan_conf(3)
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