netdev - Re: [PATCH bpf-next v6 2/6] bpf: add redirect

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Message-ID: <1992820b-4916-ed42-e1e2-8e37ae67c92f@gmail.com>
Date:   Sun, 11 Oct 2020 20:50:12 -0600
From:   David Ahern <dsahern@...il.com>
To:     Daniel Borkmann <daniel@...earbox.net>,
        Jesper Dangaard Brouer <brouer@...hat.com>
Cc:     ast@...nel.org, john.fastabend@...il.com, yhs@...com,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        Toke Høiland-Jørgensen <toke@...hat.com>
Subject: Re: [PATCH bpf-next v6 2/6] bpf: add redirect_peer helper

On 10/11/20 10:16 AM, Daniel Borkmann wrote:
>>
>> This is awesome results and great work Daniel! :-)

+1

>>
>> I wonder if we can also support this from XDP, which can also native
>> redirect into veth.  Originally I though we could add the peer netdev
>> in the devmap, but AFAIK Toke showed me that this was not possible.
> 
> I think it should be possible with similar principle. What was the
> limitation
> that you ran into with devmap for XDP?

Should just need an API to set the namespace of the redirect device -
something that devmap can be extended to include now.