netdev - Re: [PATCH v7 bpf-next 0/9] introduce support for XDP programs in CPUMAP

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Message-ID: <246b65c9-9fb4-a3af-77eb-8c7cc811ebd6@iogearbox.net>
Date:   Thu, 16 Jul 2020 18:27:04 +0200
From:   Daniel Borkmann <daniel@...earbox.net>
To:     Lorenzo Bianconi <lorenzo@...nel.org>,
        Alexei Starovoitov <alexei.starovoitov@...il.com>
Cc:     Network Development <netdev@...r.kernel.org>,
        bpf <bpf@...r.kernel.org>,
        "David S. Miller" <davem@...emloft.net>,
        Alexei Starovoitov <ast@...nel.org>,
        Jesper Dangaard Brouer <brouer@...hat.com>,
        Toke Høiland-Jørgensen <toke@...hat.com>,
        lorenzo.bianconi@...hat.com, David Ahern <dsahern@...nel.org>,
        Andrii Nakryiko <andrii.nakryiko@...il.com>
Subject: Re: [PATCH v7 bpf-next 0/9] introduce support for XDP programs in
 CPUMAP

On 7/14/20 5:35 PM, Lorenzo Bianconi wrote:
>> On Tue, Jul 14, 2020 at 6:56 AM Lorenzo Bianconi <lorenzo@...nel.org> wrote:
>>>
>>> Similar to what David Ahern proposed in [1] for DEVMAPs, introduce the
>>> capability to attach and run a XDP program to CPUMAP entries.
>>> The idea behind this feature is to add the possibility to define on which CPU
>>> run the eBPF program if the underlying hw does not support RSS.
>>> I respin patch 1/6 from a previous series sent by David [2].
>>> The functionality has been tested on Marvell Espressobin, i40e and mlx5.
>>> Detailed tests results can be found here:
>>> https://github.com/xdp-project/xdp-project/blob/master/areas/cpumap/cpumap04-map-xdp-prog.org
>>>
>>> Changes since v6:
>>> - rebase on top of bpf-next
>>> - move bpf_cpumap_val and bpf_prog in the first bpf_cpu_map_entry cache-line
>>
>> fyi. I'm waiting on Daniel to do one more look, since he commented in the past.
> 
> ack, thx. I have just figured out today that v6 is not applying anymore.

LGTM, I've applied it, thanks!