Re: [dpdk-dev] [PATCH] net/netvsc: disable before changing RSS parameters

[Ferruh Yigit <ferruh.yigit@intel.com>]

On 11/26/2019 3:32 AM, Dexuan Cui wrote:
>> From: Dexuan Cui
>> Sent: Monday, November 25, 2019 7:29 PM
>> To: Stephen Hemminger <stephen@networkplumber.org>; dev@dpdk.org;
>> Donald_Lee@trendmicro.com
>> Cc: stable@dpdk.org
>> Subject: RE: [PATCH] net/netvsc: disable before changing RSS parameters
>>
>>> From: Stephen Hemminger <stephen@networkplumber.org>
>>> Sent: Monday, November 25, 2019 9:13 AM
>>> To: dev@dpdk.org
>>> Cc: Stephen Hemminger <stephen@networkplumber.org>;
>> stable@dpdk.org;
>>> Dexuan Cui <decui@microsoft.com>
>>>
>>> In order to change RSS parameters, the host requires that RSS
>>> is disable first.
>>>
>>> Fixes: 92d23a57cafe ("net/netvsc: support configuring RSS parameters")
>>> Cc: stable@dpdk.org
>>> Signed-off-by: Dexuan Cui <decui@microsoft.com>
>>> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
>>> ---
>>>  drivers/net/netvsc/hn_ethdev.c | 14 ++++++++++++++
>>>  1 file changed, 14 insertions(+)
>>>
>>> diff --git a/drivers/net/netvsc/hn_ethdev.c
>> b/drivers/net/netvsc/hn_ethdev.c
>>> index 164e9ad174a7..575780ee5f26 100644
>>> --- a/drivers/net/netvsc/hn_ethdev.c
>>> +++ b/drivers/net/netvsc/hn_ethdev.c
>>> @@ -291,6 +291,13 @@ static int hn_rss_reta_update(struct rte_eth_dev
>>> *dev,
>>>  			hv->rss_ind[i] = reta_conf[idx].reta[shift];
>>>  	}
>>>
>>> +	err = hn_rndis_conf_rss(hv, NDIS_RSS_FLAG_DISABLE);
>>> +	if (err) {
>>> +		PMD_DRV_LOG(NOTICE,
>>> +			"rss disable failed");
>>> +		return err;
>>> +	}
>>> +
>>>  	err = hn_rndis_conf_rss(hv, 0);
>>>  	if (err) {
>>>  		PMD_DRV_LOG(NOTICE,
>>> @@ -578,6 +585,13 @@ static int hn_dev_configure(struct rte_eth_dev
>>> *dev)
>>>  			return err;
>>>  		}
>>>
>>> +		err = hn_rndis_conf_rss(hv, NDIS_RSS_FLAG_DISABLE);
>>> +		if (err) {
>>> +			PMD_DRV_LOG(NOTICE,
>>> +				"rss disable failed");
>>> +			return err;
>>> +		}
>>> +
>>>  		err = hn_rndis_conf_rss(hv, 0);
>>>  		if (err) {
>>>  			PMD_DRV_LOG(NOTICE,
>>> --
>>> 2.20.1
>>
>> Hi, Stephen,
>> I think the patch originally came from Donald Lee (I added him to "To").
>>
>> IMO Donald's Signed-off-by should be added.
>>
>> And, can you please change my Signed-off-by to Tested-by?
>>
>> -- Dexuan
> 
> Also, please add Tested-by for 
> 
> Abhishek Marathe <abmarath@microsoft.com> (Cc'd).

Hi Stephen,

I will update this in next-net if you confirm.
And to prevent confusion, can you please reply the tags that needs to be used?

Thanks,
ferruh