netdev - Re: STMMAC driver with TSO enabled issue

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Message-ID: <06ec3e2e-c41a-5f19-ffd8-51c5453d586b@synopsys.com>
Date:   Thu, 24 May 2018 10:31:48 +0100
From:   Jose Abreu <Jose.Abreu@...opsys.com>
To:     Bhadram Varka <vbhadram@...dia.com>,
        Jose Abreu <Jose.Abreu@...opsys.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Joao Pinto <Joao.Pinto@...opsys.com>
Subject: Re: STMMAC driver with TSO enabled issue

Hi Bhadram,

On 24-05-2018 06:58, Bhadram Varka wrote:
>
> After some time if check Tx descriptor status - then I see only
> below
>
> [..]
> [85788.286730] 027 [0x827951b0]: 0xf854f000 0x0 0x16d8 0x90000000
>
> index 025 and 026 descriptors processed but not index 027.
>
> At this stage Tx DMA is always in below state -
>
> ■ 3'b011: Running (Reading Data from system memory
> buffer and queuing it to the Tx buffer (Tx FIFO))

Thats strange, I think the descriptors look okay though. I will
need the registers values (before the lock) and, if possible, the
git bisect output.

Thanks and Best Regards,
Jose Miguel Abreu

>
> Thanks,
> Bhadram.