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Date:   Thu, 04 Feb 2021 06:38:46 +0530
From:   Karthikeyan periyasamy <periyasa@codeaurora.org>
To:     Peter Oh <peter.oh@eero.com>
Cc:     ath11k@lists.infradead.org, linux-wireless@vger.kernel.org
Subject: Re: [PATCH] ath11k: Update tx descriptor search index properly
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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.

Regards,
Karthikeyan P