From: Kalle Valo <kvalo@codeaurora.org>
To: Wen Gong <wgong@codeaurora.org>
Cc: ath10k@lists.infradead.org, linux-wireless@vger.kernel.org
Subject: Re: [PATCH v6 2/3] ath10k: change max RX bundle size from 8 to 32 for sdio
Date: Thu, 24 Oct 2019 13:14:27 +0300 [thread overview]
Message-ID: <87d0emsb5o.fsf@kamboji.qca.qualcomm.com> (raw)
In-Reply-To: <c2227ffd5901b03a2874fddb98298e0d@codeaurora.org> (Wen Gong's message of "Thu, 24 Oct 2019 17:40:25 +0800")
Wen Gong <wgong@codeaurora.org> writes:
> On 2019-10-24 17:25, Kalle Valo wrote:
>> Wen Gong <wgong@codeaurora.org> writes:
>>
>>> The max bundle size support by firmware is 32, change it from 8 to 32
>>> will help performance. This results in significant performance
>>> improvement on RX path.
>>>
>>> Tested with QCA6174 SDIO with firmware
>>> WLAN.RMH.4.4.1-00017-QCARMSWPZ-1
>>>
>>> Signed-off-by: Wen Gong <wgong@codeaurora.org>
>>> ---
>>> drivers/net/wireless/ath/ath10k/htc.h | 12 +++++++++---
>>> drivers/net/wireless/ath/ath10k/sdio.c | 4 ++--
>>> drivers/net/wireless/ath/ath10k/sdio.h | 4 ++--
>>> 3 files changed, 13 insertions(+), 7 deletions(-)
>>>
>>> diff --git a/drivers/net/wireless/ath/ath10k/htc.h
>>> b/drivers/net/wireless/ath/ath10k/htc.h
>>> index f55d3ca..7055156 100644
>>> --- a/drivers/net/wireless/ath/ath10k/htc.h
>>> +++ b/drivers/net/wireless/ath/ath10k/htc.h
>>> @@ -39,7 +39,7 @@
>>> * 4-byte aligned.
>>> */
>>>
>>> -#define HTC_HOST_MAX_MSG_PER_RX_BUNDLE 8
>>> +#define HTC_HOST_MAX_MSG_PER_RX_BUNDLE 32
>>
>> So how do I know that this change doesn't break any other hardware? I
>> did a quick review and I think it's safe, but the commit log mentions
>> nothing about this.
>
> the real max rx bundle is decided in ath10k_htc_wait_target.
> it is the min value of HTC_HOST_MAX_MSG_PER_RX_BUNDLE and the value
> reported from firmware.
> htc->max_msgs_per_htc_bundle =
> min_t(u8, msg->ready_ext.max_msgs_per_htc_bundle,
> HTC_HOST_MAX_MSG_PER_RX_BUNDLE);
And we assume that no other firmware than QCA6174 SDIO uses value bigger
than 8? Because if there is a such firmware using, for example, value 9
this might cause a regression.
Anyway, I added this comment to the commit log:
The real max rx bundle is decided in ath10k_htc_wait_target(), it is
the min value of HTC_HOST_MAX_MSG_PER_RX_BUNDLE and the value reported
from firmware. So this change shouldn't cause any regressions with
other hardware supported by ath10k.
--
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
next prev parent reply other threads:[~2019-10-24 10:14 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-25 9:10 [PATCH v6 0/3] ath10k: improve throughout of RX of sdio Wen Gong
2019-09-25 9:10 ` [PATCH v6 1/3] ath10k: enable RX bundle receive for sdio Wen Gong
2019-10-24 8:29 ` Kalle Valo
2019-11-25 11:49 ` Kalle Valo
2019-09-25 9:10 ` [PATCH v6 2/3] ath10k: change max RX bundle size from 8 to 32 " Wen Gong
2019-10-24 9:25 ` Kalle Valo
2019-10-24 9:40 ` Wen Gong
2019-10-24 10:14 ` Kalle Valo [this message]
2019-10-24 9:30 ` Kalle Valo
2019-10-24 9:47 ` Wen Gong
2019-10-24 10:05 ` Kalle Valo
2019-10-24 10:48 ` Wen Gong
2019-10-31 9:09 ` Kalle Valo
2019-11-01 7:41 ` Wen Gong
2019-09-25 9:10 ` [PATCH v6 3/3] ath10k: add workqueue for RX path of sdio Wen Gong
2019-10-24 8:14 ` Kalle Valo
2019-10-31 9:08 ` Kalle Valo
2019-11-01 7:42 ` Wen Gong
2019-11-11 10:47 ` Wen Gong
2019-11-11 12:23 ` Kalle Valo
2019-11-13 3:37 ` Wen Gong
2019-11-22 10:02 ` Kalle Valo
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