netdev - Re: [PATCH net-next] kcm: do not attach sockets if sk_user

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Message-ID: <1516298893.3606.24.camel@gmail.com>
Date:   Thu, 18 Jan 2018 10:08:13 -0800
From:   Eric Dumazet <eric.dumazet@...il.com>
To:     Tom Herbert <tom@...bertland.com>,
        James Chapman <jchapman@...alix.com>
Cc:     Guillaume Nault <g.nault@...halink.fr>,
        David Miller <davem@...emloft.net>,
        Linux Kernel Network Developers <netdev@...r.kernel.org>
Subject: Re: [PATCH net-next] kcm: do not attach sockets if sk_user_data is
 already used

On Thu, 2018-01-18 at 09:46 -0800, Tom Herbert wrote:
> 
> Then that's increasing the udp_sock structure size for a narrow use
> case which will get push back. I think it's going to be better to
> stick with one sock pointer. We could maybe redefine sk_user_data as a
> pointer to an allocated structure or array so it can hold multiple
> user_data pointers (in lieu of chaining).
> 

We do not have a lot of UDP sockets per host, I do not believe it
should be a problem adding stuff in them.