[PATCH] net/dpaa2: change threshold value

[Ferruh Yigit]

On 6/9/2023 3:20 PM, Ferruh Yigit wrote:
> On 5/15/2023 9:16 AM, Sachin Saxena (OSS) wrote:
>> On 5/8/2023 4:11 PM, Tianli Lai wrote:
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>>> this threshold value can be changed with function argument nb_rx_desc.
>>>
>>> Signed-off-by: Tianli Lai <laitianli at tom.com>
>>> ---
>>>   drivers/net/dpaa2/dpaa2_ethdev.c | 2 +-
>>>   1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/net/dpaa2/dpaa2_ethdev.c
>>> b/drivers/net/dpaa2/dpaa2_ethdev.c
>>> index 679f33ae1a..ad892ded4a 100644
>>> --- a/drivers/net/dpaa2/dpaa2_ethdev.c
>>> +++ b/drivers/net/dpaa2/dpaa2_ethdev.c
>>> @@ -829,7 +829,7 @@ dpaa2_dev_rx_queue_setup(struct rte_eth_dev *dev,
>>>                                                  dpaa2_q->cgid,
>>> &taildrop);
>>>                  } else {
>>>                          /*enabling per rx queue congestion control */
>>> -                       taildrop.threshold = CONG_THRESHOLD_RX_BYTES_Q;
>>> +                       taildrop.threshold = nb_rx_desc * 1024;
>>>                          taildrop.units = DPNI_CONGESTION_UNIT_BYTES;
>>>                          taildrop.oal = CONG_RX_OAL;
>>>                          DPAA2_PMD_DEBUG("Enabling Byte based Drop on
>>> queue= %d",
>>> -- 
>>> 2.27.0
>>>
>> Hi Tianli,
>>
>> The number of bytes based tail drop threshold value
>> "CONG_THRESHOLD_RX_BYTES_Q" is an optimized value for dpaa2 platform. we
>> concluded this value after multiple benchmark experiments in past.
>> Although, number of frame based threshold value is "nb_rx_desc" based only.
>> We will further review this suggestion and get back.
>>
> 
> Hi Sachin, What is the status of this patch?
> 

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