[PATCH] ath11k: Update tx descriptor search index properly

[Peter Oh]

On 2/3/21 5:08 PM, Karthikeyan periyasamy wrote:
> On 2021-02-04 00:59, Peter Oh wrote:
>> On 1/26/21 6:46 PM, Karthikeyan periyasamy wrote:
>>> On 2020-12-19 00:53, Peter Oh wrote:
>>>> On 12/18/20 7:24 AM, Karthikeyan Periyasamy wrote:
>>>>> Tx descriptor search index field should be updated with hw peer id
>>>>> and not by AST Hash. Incorrect search index causes throughput 
>>>>> degradation
>>>>> in all the platforms. so updated the search index field with hw 
>>>>> peer id,
>>>>> which is a common change applicable for all the platforms.
>>>>>
>>>>> Tested-on: IPQ8074 hw2.0 AHB 
>>>>> WLAN.HK.2.4.0.1-01492-QCAHKSWPL_SILICONZ-1
>>>>>
>>>>> diff --git a/drivers/net/wireless/ath/ath11k/peer.c 
>>>>> b/drivers/net/wireless/ath/ath11k/peer.c
>>>>> index b69e7eb..f49abefa 100644
>>>>> --- a/drivers/net/wireless/ath/ath11k/peer.c
>>>>> +++ b/drivers/net/wireless/ath/ath11k/peer.c
>>>>>
>>>>> @@ -309,7 +310,11 @@ int ath11k_peer_create(struct ath11k *ar, 
>>>>> struct ath11k_vif *arvif,
>>>>>         peer->pdev_idx = ar->pdev_idx;
>>>>>       peer->sta = sta;
>>>>> -    arvif->ast_hash = peer->ast_hash;
>>>>> +
>>>>> +    if (arvif->vif->type == NL80211_IFTYPE_STATION) {
>>>>> +        arvif->ast_hash = peer->ast_hash;
>>>>> +        arvif->ast_idx = peer->hw_peer_id;
>>>>> +    }
>>>>
>>>> How about non STATION type?
>>>>
>>>
>>> no need of configuring the ast_idx, ast_hash field for non station 
>>> type. Its recommended by HW/FW team.
>>>
>> Can you add this comment in commit message?
>>
>
> sure
>
>> Also could you include the answer to "what conditions you observed the
>> throughput degradation?" in commit message too?
>
> In all the scenario will see degradation. Its a general improvement.
>
It sounds good and it will better if you share the number before and 
after the patch.


Thanks,

Peter