netdev - Re: [PATCH net-next 0/2] net: core: Two Helper function about socket information

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Message-ID: <20170203001329.GB42563@ast-mbp.thefacebook.com>
Date:   Thu, 2 Feb 2017 16:13:31 -0800
From:   Alexei Starovoitov <alexei.starovoitov@...il.com>
To:     Chenbo Feng <chenbofeng.kernel@...il.com>
Cc:     "David S . Miller" <davem@...emloft.net>,
        Alexei Starovoitov <ast@...com>, netdev@...r.kernel.org,
        Willem de Bruijn <willemb@...gle.com>,
        Lorenzo Colitti <lorenzo@...gle.com>
Subject: Re: [PATCH net-next 0/2] net: core: Two Helper function about socket
 information

On Thu, Feb 02, 2017 at 12:59:48PM -0800, Chenbo Feng wrote:
> Introduce two eBpf helper function to get the socket cookie and
> socket uid for each packet. The helper function is useful when
> the *sk field inside sk_buff is not empty.

Looks nice.
I'd like to see a sample code/test for it though.
I think sk_uid is self explanatory, but cookie is less so.
Please explain how you plan to use it.

Thanks