netdev - Re: [PATCH net v1 1/2] amd-xgbe: Do not clear interrupt indicator

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Date:	Wed, 3 Dec 2014 08:27:58 -0600
From:	Tom Lendacky <thomas.lendacky@....com>
To:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>,
	<netdev@...r.kernel.org>
CC:	David Miller <davem@...emloft.net>
Subject: Re: [PATCH net v1 1/2] amd-xgbe: Do not clear interrupt indicator

On 12/03/2014 05:34 AM, Sergei Shtylyov wrote:
> Hello.
>
> On 12/3/2014 3:16 AM, Tom Lendacky wrote:
>
>> The interrupt value within the xgbe_ring_data structure is used as an
>> indicator of which Rx descriptor should have the INTE bit set to
>> generate an interrupt when that Rx descriptor is used.  This bit was
>> mistakenly cleared in the xgbe_unmap_rdata function, effectively
>
>     Not xgbe_unmap_skb() (as seems to follow from the patch)?

Yup, I'm mixing up my versions between net-next and net. I'll send
an updated version with a more appropriate comment.

Thanks,
Tom

>
>> nullifying the ethtool rx-frames support.
>
>> Signed-off-by: Tom Lendacky <thomas.lendacky@....com>
>> ---
>>   drivers/net/ethernet/amd/xgbe/xgbe-desc.c |    1 -
>>   1 file changed, 1 deletion(-)
>
>> diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
>> b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
>> index 6fc5da0..43b7d2e 100644
>> --- a/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
>> +++ b/drivers/net/ethernet/amd/xgbe/xgbe-desc.c
>> @@ -356,7 +356,6 @@ static void xgbe_unmap_skb(struct xgbe_prv_data
>> *pdata,
>>
>>       rdata->tso_header = 0;
>>       rdata->len = 0;
>> -    rdata->interrupt = 0;
>>       rdata->mapped_as_page = 0;
>>
>>       if (rdata->state_saved) {
>
> WBR, Sergei
>
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