Configurable Transmit Descriptor Ring Size for X4 Express Datapath - Configurable Transmit Descriptor Ring Size for X4 Express Datapath - UG1586

Onload User Guide (UG1586)

Document ID
UG1586
Release Date
2026-06-08
Revision
1.5 English

You can now configure the size of the transmit descriptor ring on the X4 Express datapath ('CTPIO'). The EF_TXQ_SIZE and EF_RXQ_SIZE per-interface configuration options have been updated to accept a value of -1, indicating to use an architecture-appropriate default size. As a result, you can now allocate up to 256 VIs with TXQs on the X4 Express datapath, instead of the previous maximum of 128.