DPDK usage discussions
 help / color / mirror / Atom feed
* DPDK timestamping
@ 2024-01-24  4:32 Lombardo, Ed
  0 siblings, 0 replies; only message in thread
From: Lombardo, Ed @ 2024-01-24  4:32 UTC (permalink / raw)
  To: users

[-- Attachment #1: Type: text/plain, Size: 828 bytes --]

I have Linux Oracle 91 with DPDK 22.11.  The Intel i226 is my focus and getting hardware timestamping working, where I can retrieve the timestamp value for each packet and reorder packets from multiple i226 devices to single ring buffer.  The Intel i226 datasheet says it supports hardware timestamping (per-packet timestamp).  When I enable Rx offload timestamping (rxmode.offloads = RTE_ETH_RX_OFFLOAD_TIMESTAMP) I no longer see packets arrive when call rte_eth_rx_burst().

When I check the devinfo.rx_offload_capa value I see a value of 0xb260f, where bit-14 (RTE_ETH_RX_OFFLOAD_TIMESTAMP) is not set.  Why doesn't DPDK 22.11 support RTE_ETH_RX_OFFLOAD_TIMESTAMP when the i226 datasheet has timestamp registers?

How in DPDK can I read the i226 registers?

Any guidance would be much appreciated.


[-- Attachment #2: Type: text/html, Size: 2719 bytes --]

^ permalink raw reply	[flat|nested] only message in thread

only message in thread, other threads:[~2024-01-24  4:33 UTC | newest]

Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2024-01-24  4:32 DPDK timestamping Lombardo, Ed

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).