netdev - Re: [PATCH net-next] net: Skip GSO length estimation if transport header is not set

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Message-ID: <CAF=yD-K3dm4bAZTX2FY3rV+x_sEtdonWtc_gV6ZXGXb8MMnRPg@mail.gmail.com>
Date:   Fri, 22 Feb 2019 09:19:26 -0500
From:   Willem de Bruijn <willemdebruijn.kernel@...il.com>
To:     Maxim Mikityanskiy <maximmi@...lanox.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Willem de Bruijn <willemb@...gle.com>,
        Saeed Mahameed <saeedm@...lanox.com>,
        Jason Wang <jasowang@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Eran Ben Elisha <eranbe@...lanox.com>,
        Tariq Toukan <tariqt@...lanox.com>
Subject: Re: [PATCH net-next] net: Skip GSO length estimation if transport
 header is not set

On Fri, Feb 22, 2019 at 7:56 AM Maxim Mikityanskiy <maximmi@...lanox.com> wrote:
>
> qdisc_pkt_len_init expects transport_header to be set for GSO packets.
> Patch [1] skips transport_header validation for GSO packets that don't
> have network_header set at the moment of calling virtio_net_hdr_to_skb,
> and allows them to pass into the stack. After patch [2] no placeholder
> value is assigned to transport_header if dissection fails, so this patch
> adds a check to the place where the value of transport_header is used.
>
> [1] https://patchwork.ozlabs.org/patch/1044429/
> [2] https://patchwork.ozlabs.org/patch/1046122/
>
> Signed-off-by: Maxim Mikityanskiy <maximmi@...lanox.com>

Acked-by: Willem de Bruijn <willemb@...gle.com>