netdev - Re: [PATCH 3/4] e1000e: Calculate the desc

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Date:	Tue, 21 May 2013 00:25:29 +0800
From:	Wei Yang <weiyang@...ux.vnet.ibm.com>
To:	jeffrey.t.kirsher@...el.com
Cc:	e1000-devel@...ts.sourceforge.net, netdev@...r.kernel.org
Subject: Re: [PATCH 3/4] e1000e: Calculate the desc_len based on adapter type

On Mon, May 20, 2013 at 02:37:48AM -0700, Jeff Kirsher wrote:
>On 05/20/2013 01:15 AM, Wei Yang wrote:
>> desc_len represents the size of descriptor in rx_ring. There are two kinds of
>> rx descriptors, e1000_rx_desc_packet_split(32 byte) and
>> e1000_rx_desc_extended(16 byte). Different adapter will use different rx
>> descriptors.
>>
>> When allocating the dma space for this descriptor in current implementation,
>> the code ignore the descriptor type and take it as e1000_rx_desc_packet_split
>> in any case. This behavior will not effect the function, but will require
>> double size of dma space.
>>
>> This patch will calculate the desc_len based on the adapter type.
>>
>> Tested on T420, which use e1000_rx_desc_extended and works fine.
>>
>> Signed-off-by: Wei Yang <weiyang@...ux.vnet.ibm.com>
>> ---
>>  drivers/net/ethernet/intel/e1000e/netdev.c |    7 ++++++-
>>  1 files changed, 6 insertions(+), 1 deletions(-)
>Thanks, I have added the patch to my queue for e1000e.
>

Thanks~



-- 
Richard Yang
Help you, Help me

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