[Make-wifi-fast] New Realtek driver 802.11ax, with FQ-CoDel support!

[Toke Høiland-Jørgensen]

Rich Brown <richb.hanover at gmail.com> writes:

>> On Oct 9, 2021, at 12:00 PM, make-wifi-fast-request at lists.bufferbloat.net wrote:
>> 
>> In the process of being upstreamed:
>> 
>> https://lore.kernel.org/r/20211008035627.19463-1-pkshih@realtek.com <https://lore.kernel.org/r/20211008035627.19463-1-pkshih@realtek.com>
>> 
>>> This driver named rtw89, which is the next generation of rtw88, supports
>>> Realtek 8852AE 802.11ax 2x2 chip whose new features are OFDMA, DBCC,
>>> Spatial reuse, TWT and BSS coloring; now some of them aren't implemented
>>> though.
>
> This is so cool! A couple questions:
>
> 1) I have lost track: what drivers now incorporate FQ-CoDel?

$ cd drivers/net/wireless && git grep -l wake_tx_queueath/ath10k/mac.c
ath/ath9k/ath9k.h
ath/ath9k/main.c
ath/ath9k/xmit.c
intel/iwlwifi/mvm/mac80211.c
mediatek/mt76/mt76.h
mediatek/mt76/mt7603/main.c
mediatek/mt76/mt7615/main.c
mediatek/mt76/mt76x0/pci.c
mediatek/mt76/mt76x0/usb.c
mediatek/mt76/mt76x2/pci_main.c
mediatek/mt76/mt76x2/usb_main.c
mediatek/mt76/mt7915/main.c
mediatek/mt76/mt7921/main.c
mediatek/mt76/tx.c
realtek/rtw88/mac80211.c

> 2) How can we talk about this in OpenWrt (and elsewhere...)?
> 	- Is it correct/reasonable/sensible to say that the fq_codel wifi drivers are "good" while the others are "not-so-good"
> 	- Does the presence of a chip/driver from 1) above indicate a more desirable device?
> 	- Or is it more nuanced?

For just the FQ-codel in driver support, yeah, I think it's fair to say
that it's unambiguously "better".

-Toke