From mboxrd@z Thu Jan  1 00:00:00 1970
From: Victor Julien <victor@inliniac.net>
Subject: Re: [PATCH 2/2] packet: Add fanout support.
Date: Tue, 05 Jul 2011 08:56:38 +0200
Message-ID: <4E12B5A6.2020802@inliniac.net>
References: <20110704.212014.236340473910292460.davem@davemloft.net> <1309846875.2720.43.camel@edumazet-laptop>
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Cc: David Miller <davem@davemloft.net>, netdev@vger.kernel.org
To: Eric Dumazet <eric.dumazet@gmail.com>
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On 07/05/2011 08:21 AM, Eric Dumazet wrote:
> Le lundi 04 juillet 2011 =C3=A0 21:20 -0700, David Miller a =C3=A9cri=
t :
>> Fanouts allow packet capturing to be demuxed to a set of AF_PACKET
>> sockets.  Two fanout policies are implemented:
>>
>> 1) Hashing based upon skb->rxhash
>=20
> ...
>=20
>> +
>> +static struct sock *fanout_demux_hash(struct packet_fanout *f, stru=
ct sk_buff *skb)
>> +{
>> +	u32 idx, hash =3D skb->rxhash;
>> +
>> +	idx =3D ((u64)hash * f->num_members) >> 32;
>> +
>> +	return f->arr[idx];
>> +}
>> +
>=20
> rxhash is 0 unless skb_get_rxhash() was called, or some NIC set it in=
 RX
> path.
>=20

Is this still also true for IP fragments?

--=20
---------------------------------------------
Victor Julien
http://www.inliniac.net/
PGP: http://www.inliniac.net/victorjulien.asc
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