rte_eth_hairpin_conf(3) DPDK rte_eth_hairpin_conf(3) NAME rte_eth_hairpin_conf SYNOPSIS #include <rte_ethdev.h> Data Fields uint32_t peer_count:16 uint32_t tx_explicit:1 uint32_t manual_bind:1 uint32_t use_locked_device_memory:1 uint32_t use_rte_memory:1 uint32_t force_memory:1 uint32_t reserved:11 Detailed Description Warning EXPERIMENTAL: this API may change, or be removed, without prior notice A structure used to configure hairpin binding. Definition at line 1291 of file rte_ethdev.h. Field Documentation uint32_t peer_count The number of peers. Definition at line 1292 of file rte_ethdev.h. uint32_t tx_explicit Explicit Tx flow rule mode. One hairpin pair of queues should have the same attribute. * When set, the user should be responsible for inserting the hairpin Tx part flows and removing them. * When clear, the PMD will try to handle the Tx part of the flows, e.g., by splitting one flow into two parts. Definition at line 1303 of file rte_ethdev.h. uint32_t manual_bind Manually bind hairpin queues. One hairpin pair of queues should have the same attribute. * When set, to enable hairpin, the user should call the hairpin bind func- tion after all the queues are set up properly and the ports are started. Also, the hairpin unbind function should be called accordingly before stopping a port that with hairpin configured. * When cleared, the PMD will try to enable the hairpin with the queues con- figured automatically during port start. Definition at line 1316 of file rte_ethdev.h. uint32_t use_locked_device_memory Use locked device memory as a backing storage. * When set, PMD will attempt place descriptors and/or data buffers in dedi- cated device memory. * When cleared, PMD will use default memory type as a backing storage. Please refer to PMD documentation for details. API user should check if PMD supports this configuration flag using See also rte_eth_dev_hairpin_capability_get. Definition at line 1329 of file rte_ethdev.h. uint32_t use_rte_memory Use DPDK memory as backing storage. * When set, PMD will attempt place descriptors and/or data buffers in host memory managed by DPDK. * When cleared, PMD will use default memory type as a backing storage. Please refer to PMD documentation for details. API user should check if PMD supports this configuration flag using See also rte_eth_dev_hairpin_capability_get. Definition at line 1342 of file rte_ethdev.h. uint32_t force_memory Force usage of hairpin memory configuration. * When set, PMD will attempt to use specified memory settings. If resource allocation fails, then hairpin queue allocation will result in an error. * When clear, PMD will attempt to use specified memory settings. If re- source allocation fails, then PMD will retry allocation with default con- figuration. Definition at line 1354 of file rte_ethdev.h. uint32_t reserved Reserved bits. Definition at line 1356 of file rte_ethdev.h. Author Generated automatically by Doxygen for DPDK from the source code. Version 25.11.0 Thu Aug 27 2026 rte_eth_hairpin_conf(3)
NAME | SYNOPSIS | Detailed Description | Field Documentation | Author
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