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Message-ID: <CANzUK5-ys2A46MWKjAO7F_aF6cSN8rnPrRAY3eb_nDYRuCNV7A@mail.gmail.com> Date: Thu, 30 Nov 2023 17:10:20 +0530 From: Srivats P <pstavirs@...il.com> To: Jesper Dangaard Brouer <jbrouer@...hat.com> Cc: Xdp <xdp-newbies@...r.kernel.org>, Network Development <netdev@...r.kernel.org>, brouer@...hat.com, Lorenzo Bianconi <lorenzo.bianconi@...hat.com>, David Ahern <dsahern@...nel.org>, Jakub Kicinski <kuba@...nel.org> Subject: Re: netdev stats for AF_XDP traffic Hi, > > Is there any update on the "consistency for XDP statistics" [1] > > high-prio work item from the xdp-project.net project management page? > > Lorenzo (cc) have done cleanups in several drivers, both mvneta and > veth, but not mlx5. Ahern (cc) also had an interest earlier. > > > > More specifically the fact that the mlx driver (are there others too?) > > don't update netdev/ifconfig stats for XDP/AF_XDP traffic? > > IMHO the drivers MUST update the netdev/ifconfig RX stats, even when an > XDP action is taken. XDP-progs are user installed software, and not > updating netdev RX-stats (for some XDP actions) is very confusing for > all existing stats collector tools. Does anyone know if the mlx4/mlx5 driver in recent kernel versions update the netdev stats for AF_XDP tx/rx traffic? > The mlx drivers are (sadly) the most inconsistent if I remember correctly. > > > The email thread started for that item dates from 2018 and hasn't > > seen any updates after that. > I think nobody have really had the time to fix up this inconsistent > stats mess. > > Are you interested in working on this? > > > > I see some recent patch/commit activity about XDP specific stats via > > netlink but I believe this is different from the standard > > netdev/ifconfig stats. > > Yes, if taking this "task", I recommend focusing on standardizing > netdev/ifconfig stats behavior for XDP. Solving the other XDP specific > stats is a much larger task with much upstream discussions required. > > > Srivats > > > > [1] https://xdp-project.net/#Consistency-for-statistics-with-XDP > > > > --Jesper >
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