rte_eth_hairpin_conf

Author

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DPDK                                             Version 24.11.2                         rte_eth_hairpin_conf(3)

Detailed Description

WarningEXPERIMENTAL: this API may change, or be removed, without prior notice

       A structure used to configure hairpin binding.

       Definition at line 1260 of file rte_ethdev.h.

Field Documentation

uint32_tpeer_count
The number of peers.

Definition at line 1261 of file rte_ethdev.h.

uint32_ttx_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 1272 of file rte_ethdev.h.

uint32_tmanual_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 function 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 configured automatically during
port start.

Definition at line 1285 of file rte_ethdev.h.

uint32_tuse_locked_device_memory
Use locked device memory as a backing storage.

• When set, PMD will attempt place descriptors and/or data buffers in dedicated 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

Seealsorte_eth_dev_hairpin_capability_get.

Definition at line 1298 of file rte_ethdev.h.

uint32_tuse_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

Seealsorte_eth_dev_hairpin_capability_get.

Definition at line 1311 of file rte_ethdev.h.

uint32_tforce_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 resource allocation fails, then PMD
will retry allocation with default configuration.

Definition at line 1323 of file rte_ethdev.h.

uint32_treserved
Reserved bits.

Definition at line 1325 of file rte_ethdev.h.

Name

       rte_eth_hairpin_conf

Synopsis

       #include <rte_ethdev.h>

   DataFields
       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