netdev - Re: [PATCH net-next 2/2] tools: psock_tpacket: verify that packet was received on lo before counting it

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Date:   Wed, 4 Jan 2017 11:24:13 -0500
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Sowmini Varadhan <sowmini.varadhan@...cle.com>
Cc:     linux-kselftest@...r.kernel.org,
        Network Development <netdev@...r.kernel.org>,
        Daniel Borkmann <daniel@...earbox.net>,
        Willem de Bruijn <willemb@...gle.com>,
        David Miller <davem@...emloft.net>, shuah@...nel.org
Subject: Re: [PATCH net-next 2/2] tools: psock_tpacket: verify that packet was
 received on lo before counting it

On Wed, Jan 4, 2017 at 11:12 AM, Sowmini Varadhan
<sowmini.varadhan@...cle.com> wrote:
> On (01/04/17 11:07), Willem de Bruijn wrote:
>>
>> Please do. Then the patch is just a one-line change to
>> the third argument of the socket call. Thanks!
>
> ok but it's going to be more than a one-line change. Today you
> have
>         sock = pfsocket(version);
>         memset(&ring, 0, sizeof(ring));
>         setup_ring(sock, &ring, version, type);
>         mmap_ring(sock, &ring);
>         bind_ring(sock, &ring);
>         walk_ring(sock, &ring);
>
> And the pair_udp_setfilter() only gets set up out of
> walk_ring. I think you want to move that up to be done before
> bind_ring.

Oh, good point. It may require some more refactoring. Feel free to
leave it for me if you prefer.