On Wed, 6 Oct 2021 12:48:43 +0530 Subbaraya Sundeep wrote:
Octeontx2 hardware writes a Completion Queue Entry(CQE) in the
memory provided by software when a packet is received or
transmitted. CQE has the buffer pointers (IOVAs) where the
packet data fragments are written by hardware. One 128 byte
CQE can hold 6 buffer pointers and a 512 byte CQE can hold
42 buffer pointers. Hence large packets can be received either
by using 512 byte CQEs or by increasing size of receive buffers.
Current driver only supports 128 byte CQEs.
This patchset adds devlink params to change CQE and receive
buffer sizes which inturn helps to tune whether many small size
buffers or less big size buffers are needed to receive larger
packets. Below is the patches description:
nak. Stop ignoring feedback and reposting your patches.