On Tue, Apr 11, 2023 at 05:03:31AM +1000, Aris Theocharides via Linuxptp-users wrote: > > The card in question is a 4-port i210 PCIe - > https://www.lr-link.com/products/LRES3004PT.html > > It seems to behave for general use, but I can’t use it without PTP working. > > A single-port PCIe i210 behaves perfectly on the same mainboard, so I assume > that something interesting is happening in the i210 driver for this card. > > For interest, I have 2 of these cards, and both exhibit the same behaviour > (so, unlikely to be a failure of a specific card). A single-port i210 card > work perfectly. > > Not sure where from here. Maybe a full debug trace?
Probably the generic work (see igb_ptp_tx_work()) is being delayed too much on your RT kernels. Try increasing tx_timestamp_timeout to a really large value, like 1000. Also try a non RT kernel. Proper fix is to let driver use ptp_aux_kworker/do_aux_work and set kernel thread to SCHED_FIFO at high priority. FWIW I have a box with three 1-port i210 PCIe cards that runs fine on vanilla kernel. HTH, Richard _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
