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Date:	Fri, 20 Nov 2015 10:18:14 +0100
From:	Daniel Wagner <>
To:	Tejun Heo <>, <>,
	<>, <>,
	<>, <>,
CC:	<>, <>,
	<>, <>,
	<>, <>,
	<>, <>
Subject: Re: [PATCH 4/7] netprio_cgroup: limit the maximum css->id to

On 11/19/2015 07:52 PM, Tejun Heo wrote:
> netprio builds per-netdev contiguous priomap array which is indexed by
> css->id.  The array is allocated using kzalloc() effectively limiting
> the maximum ID supported to some thousand range.  This patch caps the
> maximum supported css->id to USHRT_MAX which should be way above what
> is actually useable.
> This allows reducing sock->sk_cgrp_prioidx to u16 from u32.  The freed
> up part will be used to overload the cgroup related fields.
> sock->sk_cgrp_prioidx's position is swapped with sk_mark so that the
> two cgroup related fields are adjacent.
> Signed-off-by: Tejun Heo <>
> Cc: Daniel Borkmann <>
> Cc: Daniel Wagner <>

Acked-by: Daniel Wagner <>
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