2019-09-06 20:08:55

by Lorenzo Bianconi

Subject: [PATCH] mt76: mt7615: enable SCS by default

Enable Smart Carrier Sense algorithm by default in order to improve
performances in a noisy environment

Signed-off-by: Lorenzo Bianconi <[email protected]>
---
drivers/net/wireless/mediatek/mt76/mt7615/init.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index 1104e4c8aaa6..835499979b73 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -50,7 +50,7 @@ static void mt7615_mac_init(struct mt7615_dev *dev)
MT_TMAC_CTCR0_INS_DDLMT_EN);

mt7615_mcu_set_rts_thresh(dev, 0x92b);
- mt7615_mac_set_scs(dev, false);
+ mt7615_mac_set_scs(dev, true);

mt76_rmw(dev, MT_AGG_SCR, MT_AGG_SCR_NLNAV_MID_PTEC_DIS,
MT_AGG_SCR_NLNAV_MID_PTEC_DIS);
--
2.21.0

2019-09-07 13:58:41

by Toke Høiland-Jørgensen

Subject: Re: [PATCH] mt76: mt7615: enable SCS by default

Lorenzo Bianconi <[email protected]> writes:

> Enable Smart Carrier Sense algorithm by default in order to improve
> performances in a noisy environment

What does that do (the algorithm, that is)? :)

-Toke

2019-09-08 12:44:11

by Lorenzo Bianconi

Subject: Re: [PATCH] mt76: mt7615: enable SCS by default

>
> Lorenzo Bianconi <[email protected]> writes:
>
> > Enable Smart Carrier Sense algorithm by default in order to improve
> > performances in a noisy environment
>
> What does that do (the algorithm, that is)? :)
>
> -Toke

Hi Toke,

it is used for tuning device sensitivity according to RTS error rate
and False CCA reported by the radio (e.g decrease radio sensitivity to
cut off interference stations).
It has been ported from vendor sdk.
https://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next.git/commit/drivers/net/wireless/mediatek/mt76/mt7615?id=49de79ad9a748c86277f39613ade72dc56421454

Regards,
Lorenzo