netdev - Re: [PATCH v2 net-next 06/12] ep93xx

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Message-ID: <CANn89iLk=C_MbY9rHC9UufOEyPxrSwVxet61PJZXx1sP3FYLcQ@mail.gmail.com>
Date:   Tue, 16 May 2017 13:48:55 -0700
From:   Eric Dumazet <edumazet@...gle.com>
To:     Alexander Sverdlin <alexander.sverdlin@...il.com>
Cc:     Ryan Mallon <rmallon@...il.com>,
        Lennert Buytenhek <buytenh@...tstofly.org>,
        "David S. Miller" <davem@...emloft.net>,
        netdev <netdev@...r.kernel.org>,
        Eric Dumazet <eric.dumazet@...il.com>,
        Hartley Sweeten <hsweeten@...ionengravers.com>
Subject: Re: [PATCH v2 net-next 06/12] ep93xx_eth: add GRO support

On Tue, May 16, 2017 at 1:41 PM, Alexander Sverdlin
<alexander.sverdlin@...il.com> wrote:

> it turns out I've used this patch two weeks long already in 4.11; but I've spent
> a couple of hours now torturing the new driver and was not able to provoke
> any inadequate behavior. It either receives all packets in time or not at all.
> If IRQs would be edge-triggered, I'd expect some stale packets, which do not
> arrive at first, but then appear with the packets coming next. This is not
> the case. I've used pktgen module for this, with minimal packets and
> different bursts.
>
> netperf shows 45Mbit/s on UDP_STREAM test, which is also fair amount for
> 200MHz CPU.
>
> So, I see no problems with the change.
>

Thanks a lot for testing !