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From: Laszlo Ersek <lersek@redhat.com>
To: Jan Beulich <JBeulich@suse.com>
Cc: Wei Liu <wei.liu2@citrix.com>,
	"netdev@vger.kernel.org" <netdev@vger.kernel.org>,
	"jeremy@goop.org" <jeremy@goop.org>,
	"xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>,
	Ian Campbell <Ian.Campbell@citrix.com>,
	Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Subject: Re: [Xen-devel] [PATCH] xen-netfront: correct	MAX_TX_TARGET	calculation.
Date: Fri, 03 Feb 2012 14:39:42 +0100	[thread overview]
Message-ID: <4F2BE39E.9030101@redhat.com> (raw)
In-Reply-To: <4F2BEEA70200007800070E81@nat28.tlf.novell.com>

On 02/03/12 14:26, Jan Beulich wrote:
>>>> On 03.02.12 at 13:59, Laszlo Ersek<lersek@redhat.com>  wrote:

>> (Eyeballing the source makes me think
>>
>>     NET_TX_RING_SIZE == (4096 - 16 - 48) / (5 * 4) == 201
>>     NET_RX_RING_SIZE == (4096 - 16 - 48) / (4 * 4) == 252
>
> NET_TX_RING_SIZE == (4096 - 16 - 48) / (6 * 2) == 336
> NET_RX_RING_SIZE == (4096 - 16 - 48) / (4 * 2) == 504

Sorry, I wasn't sure if gcc would pack them without 
__attribute__((packed)) :) Dumb mistake, admittedly.

Thanks,
Laszlo

  reply	other threads:[~2012-02-03 13:38 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-01-26 17:23 [PATCH] xen-netfront: correct MAX_TX_TARGET calculation Wei Liu
2012-01-26 18:19 ` Konrad Rzeszutek Wilk
2012-01-27 10:36   ` Wei Liu
2012-01-27 10:36     ` Wei Liu
2012-02-03 12:27     ` [Xen-devel] " Laszlo Ersek
2012-02-03 12:59       ` Laszlo Ersek
2012-02-03 13:26         ` Jan Beulich
2012-02-03 13:39           ` Laszlo Ersek [this message]
2012-01-26 18:48 ` David Miller

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