netdev - Re: [PATCH net-next] net: filter: return -EINVAL if BPF_S

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Date:	Sun, 30 Dec 2012 02:30:58 -0800 (PST)
From:	David Miller <davem@...emloft.net>
To:	dborkman@...hat.com
Cc:	ani@...stanetworks.com, netdev@...r.kernel.org,
	eric.dumazet@...il.com
Subject: Re: [PATCH net-next] net: filter: return -EINVAL if BPF_S_ANC*
 operation is not supported

From: Daniel Borkmann <dborkman@...hat.com>
Date: Fri, 28 Dec 2012 21:50:17 +0100

> Currently, we return -EINVAL for malformed or wrong BPF filters.
> However, this is not done for BPF_S_ANC* operations, which makes it
> more difficult to detect if it's actually supported or not by the
> BPF machine. Therefore, we should also return -EINVAL if K is within
> the SKF_AD_OFF universe and the ancillary operation did not match.
 ...
> Cc: Eric Dumazet <eric.dumazet@...il.com>
> Reported-by: Ani Sinha <ani@...stanetworks.com>
> Signed-off-by: Daniel Borkmann <dborkman@...hat.com>

Applied, thanks.
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