linux-kernel - Re: [PATCH net-next] sfc: reduce the number of requested xdp ev queues

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Date:   Tue, 19 Jan 2021 16:31:53 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Ivan Babrou <ivan@...udflare.com>
Cc:     Linux Kernel Network Developers <netdev@...r.kernel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>, bpf@...r.kernel.org,
        kernel-team <kernel-team@...udflare.com>,
        Edward Cree <ecree.xilinx@...il.com>,
        Martin Habets <habetsm.xilinx@...il.com>,
        "David S. Miller" <davem@...emloft.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <hawk@...nel.org>,
        John Fastabend <john.fastabend@...il.com>
Subject: Re: [PATCH net-next] sfc: reduce the number of requested xdp ev
 queues

On Tue, 19 Jan 2021 15:43:43 -0800 Ivan Babrou wrote:
> On Thu, Dec 17, 2020 at 10:14 AM Jakub Kicinski <kuba@...nel.org> wrote:
> > On Mon, 14 Dec 2020 17:29:06 -0800 Ivan Babrou wrote:  
> > > Without this change the driver tries to allocate too many queues,
> > > breaching the number of available msi-x interrupts on machines
> > > with many logical cpus and default adapter settings:
> > >
> > > Insufficient resources for 12 XDP event queues (24 other channels, max 32)
> > >
> > > Which in turn triggers EINVAL on XDP processing:
> > >
> > > sfc 0000:86:00.0 ext0: XDP TX failed (-22)
> > >
> > > Signed-off-by: Ivan Babrou <ivan@...udflare.com>  
> >
> > Looks like the discussion may have concluded, but we don't take -next
> > patches during the merge window, so please repost when net-next reopens.
> >
> > Thanks!
> > --
> > # Form letter - net-next is closed
> >
> > We have already sent the networking pull request for 5.11 and therefore
> > net-next is closed for new drivers, features, code refactoring and
> > optimizations. We are currently accepting bug fixes only.
> >
> > Please repost when net-next reopens after 5.11-rc1 is cut.  
> 
> Should I resend my patch now that the window is open or is bumping
> this thread enough?

You need to resend, thanks!