On Mon, Nov 08, 2021 at 12:11:11PM -0800, Christopher Wingert wrote: > Hi, > > I am working with a Aquantia AQC 107 ethernet interface. After the announce > message is sent on FD_GENERAL, a poll() of the the FD_GENERAL descriptor > generates a POLLERR. I see 3 delay messages go out the interface on > FD_EVENT (previous to the announce message) without issue (no socket error > on read on the FD_EVENT descriptor). > > The only difference i see between the two sockets is how the sock_filter is > setup. > > I am thinking this is an issue with the Aquantia driver, as the same command > on a Mellanox Connect X5 works fine. > > Has anyone seen this issue or have a clue as to where I should start? > > Thanks! > Chris > > > ptp4l command line : ptp4l -i els1 -H -P -2 -m > Kernel is 4.18 > I downloaded the latest Atlantic driver from the Marvell website 2.4.14.0 > I have upgraded the AQC 107 firmware to 3.1.121
I've no experience with this driver whatsoever, but generally, what ptp4l receives on the error queue of a socket is a TX timestamp. What is surprising is that there's a TX timestamp for a general (not event) message, because ptp4l does not ask these to be timestamped. Apart from the error messages, does the system otherwise behave ok? You can try to read from the general message socket into a packet buffer and hexdump it, put it in tcpdump and see what it is. Then the next step might be to process its control messages (cmsg), although my first guess would be that TX timestamping is what's going on. There are plenty of things that could go wrong in a driver (especially in one you downloaded from the vendor's website and not from kernel.org). If you're handy with the source code, you can check what is the condition based on which this driver offers hardware TX timestamps to the stack. It should be if skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP is set for that packet, AND hardware TX timestamping was requested through HWTSTAMP_TX_ON. _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
