netdev - Re: BUG:af_packet fails to TX TSO frames

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Message-ID: <40e87e75-742f-3542-b79e-1e7fee9b4485@cambridgegreys.com>
Date:   Wed, 11 Oct 2017 23:01:49 +0100
From:   Anton Ivanov <anton.ivanov@...bridgegreys.com>
To:     Anton Ivanov <anton.ivanov@...-begemot.co.uk>,
        Willem de Bruijn <willemdebruijn.kernel@...il.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        David Miller <davem@...emloft.net>
Subject: Re: BUG:af_packet fails to TX TSO frames

[snip]

> This will be tomorrow though, it is late here.
>
> The only obvious difference I can see at this point is that I am using
> iovs and sending the vnet header as iov[0] and the data in pieces after
> that while your code is doing a send() for the whole frame. This should
> not make any difference though - it all ends up as an iov internally in
> the kernel.

Spoke too soon. It is not reporting any errors, but there is nothing
coming out on the actual Ethernet.

Leaving it till tomorrow.

A.

>
> A.
>
>


-- 
Anton R. Ivanov
Cambridgegreys Limited. Registered in England. Company Number 10273661