netdev - Re: [PATCH bpf-next 03/12] net: Add IFLA_XDP_EGRESS for XDP programs in the egress path

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Message-ID: <20200126141701.3f27b03c@cakuba>
Date:   Sun, 26 Jan 2020 14:17:01 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Jesper Dangaard Brouer <jbrouer@...hat.com>
Cc:     David Ahern <dsahern@...il.com>,
        Toke Høiland-Jørgensen 
        <toke@...hat.com>, David Ahern <dsahern@...nel.org>,
        netdev@...r.kernel.org, prashantbhole.linux@...il.com,
        jasowang@...hat.com, davem@...emloft.net, mst@...hat.com,
        toshiaki.makita1@...il.com, daniel@...earbox.net,
        john.fastabend@...il.com, ast@...nel.org, kafai@...com,
        songliubraving@...com, yhs@...com, andriin@...com,
        David Ahern <dahern@...italocean.com>
Subject: Re: [PATCH bpf-next 03/12] net: Add IFLA_XDP_EGRESS for XDP
 programs in the egress path

On Sun, 26 Jan 2020 13:49:33 +0100, Jesper Dangaard Brouer wrote:
> Yes, please. I want this NIC TX hook to see both SKBs and xdp_frames.

Any pointers on what for? Unless we see actual use cases there's
a justifiable concern of the entire thing just being an application of
"We can solve any problem by introducing an extra level of indirection."