netdev - Re: Unix Socket buffer attribution

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Message-ID: <1358961185.12374.853.camel@edumazet-glaptop>
Date:	Wed, 23 Jan 2013 09:13:05 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Yannick Koehler <yannick@...hler.name>
Cc:	Cong Wang <xiyou.wangcong@...il.com>, netdev@...r.kernel.org
Subject: Re: Unix Socket buffer attribution

On Wed, 2013-01-23 at 08:56 -0800, Eric Dumazet wrote:

> You'll have to add proper limits (SO_RCVBUF), accounting the truesize of
> all accumulated messages.

And if you claim being able to remove DOS attacks, you'll also have to
add global limits, at a very minimum.

(a la /proc/sys/net/ipv4/tcp_mem or /proc/sys/net/ipv4/udp_mem)

Its not an easy problem, unfortunately.



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