From mboxrd@z Thu Jan  1 00:00:00 1970
From: Eric Dumazet <eric.dumazet@gmail.com>
Subject: Re: ixgbe question
Date: Mon, 30 Nov 2009 14:02:08 +0100
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Cc: john.r.fastabend@intel.com, peter.p.waskiewicz.jr@intel.com,
	robert@herjulf.net, hawk@diku.dk, netdev@vger.kernel.org
To: David Miller <davem@davemloft.net>
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David Miller a =E9crit :
> From: John Fastabend <john.r.fastabend@intel.com>
> Date: Tue, 24 Nov 2009 13:14:12 +0000
>=20
>> Believe the below patch will break DCB and FCoE though, both feature=
s
>> have the potential to set real_num_tx_queues to greater then the
>> number of CPUs.  This could result in real_num_tx_queues >
>> num_tx_queues.
>>
>> The current solution isn't that great though, maybe we should set to
>> the minimum of MAX_TX_QUEUES and num_possible_cpus() * 2 + 8.
>>
>> That should cover the maximum possible queues for DCB, FCoE and thei=
r
>> combinations.
>>
>> general multiq =3D num_possible_cpus()
>> DCB =3D 8 tx queue's
>> FCoE =3D 2*num_possible_cpus()
>> FCoE + DCB =3D 8 tx queues + num_possible_cpus
>=20
> Eric, I'm tossing your patch because of this problem, just FYI.

Sure, I guess we need a more generic way to handle this.