linux-kernel - Re: [PATCH net-next] net neighbour,decnet: Ensure to align device private data on preferred alignment.

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Date:	Mon, 11 Feb 2013 00:23:05 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	yoshfuji@...ux-ipv6.org
Cc:	fengguang.wu@...el.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next] net neighbour,decnet: Ensure to align device
 private data on preferred alignment.

From: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
Date: Sun, 10 Feb 2013 02:00:59 +0900

> To allow both of protocol-specific data and device-specific data
> attached with neighbour entry, and to eliminate size calculation
> cost when allocating entry, sizeof protocol-speicic data must be
> multiple of NEIGH_PRIV_ALIGN.  On 64bit archs,
> sizeof(struct dn_neigh) is multiple of NEIGH_PRIV_ALIGN, but on
> 32bit archs, it was not.
> 
> Introduce NEIGH_ENTRY_SPACE() macro to ensure that protocol-specific
> entry-size meets our requirement.
> 
> Reported-by: Fengguang Wu <fengguang.wu@...el.com>
> Signed-off-by: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>

Applied.
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