Stanislaw Gruszka <sgrus...@redhat.com> writes: > On Fri, Sep 21, 2018 at 02:03:55PM +0800, yhchu...@realtek.com wrote: >> From: Yan-Hsuan Chuang <yhchu...@realtek.com> >> >> This is a new mac80211 driver for Realtek 802.11ac wireless network chips. >> rtwlan supports 8822BE and 8822CE chips, and will be able to support >> multi-vif combinations in run-time. >> >> For now, only PCI bus is supported, but rtwlan was originally designed >> to optionally support three buses includes USB & SDIO. USB & SDIO modules >> will soon be supported by rtwlan, with configurable core module to fit >> with different bus modules in the same time. >> >> For example, if we choose 8822BE and 8822CU, only PCI & USB modules will >> be selected, built, loaded into kernel. This is one of the major >> difference from rtlwifi, which can only support specific combinations. >> >> Another difference from rtlwifi is that rtwlan is designed to support >> the latest Realtek 802.11ac wireless network chips like 8822B and >> 8822C series. Compared to the earlier chips supported by rtlwifi like >> the 802.11n 8192EE chipset or 802.11ac 8821AE/8812AE chips, newer ICs >> have different MAC & PHY settings, such as new multi-port feature for the >> MAC layer design and Jaguar2/Jaguar3 PHY layer IPs. >> >> Multi-Port feature is also supported under rtwlan's software architecture. >> rtlwifi can only support one vif in the same time, most because of the >> hardware limitations for early chips, hence the original design of it >> also restricts the usage of multi-vif support, so latest chipset seems not >> take advantages from its new MAC engine. >> >> However, rtwlan can run multiple vifs concurrently by holding them on >> hardware ports provided by MAC engine, so we can easily start different >> roles on a single device. >> >> Based on the reasons mentioned before, we implemented rtwlan. It had many >> authors, they are listed here alphabetically: >> >> Ping-Ke Shih <pks...@realtek.com> >> Tzu-En Huang <tehu...@realtek.com> >> Yan-Hsuan Chuang <yhchu...@realtek.com> > > I didn't do detailed review, but my general impression is very very > positive. New driver looks great!
I also did a quick 10 min look at the driver and indeed in general it looks good. > Just 2 generic remarks: > - please add MAINTAINERS file entry > - please post a patch or request to remove staging/rtlwifi driver > since this one is replace for it (8822BE PCI-ID is the same) Something I noticed: o Magic numbers (BIT(1) etc) in quite a few places. o Personally not really fond of "#ifdef LITTLE_ENDIAN" usage, but I guess we can live with that? o To me the name "rtwlan" sounds confusing when one compares it with "rtlwifi". And how would the possible next generation 11ax driver be then called? As a good example I really like the driver name mt76, could this one have something similar to make it more descriptive? I also pushed this to the pending branch on wireless-drivers-next so that kbuild bot can extensively test it. -- Kalle Valo
