Re: [PATCH 2/3] staging/rtl8192e: use s8 instead of char
From: Arnd Bergmann
Date: Wed Jul 20 2016 - 12:00:57 EST
On Wednesday, July 20, 2016 11:33:43 AM CEST Jes Sorensen wrote:
> Arnd Bergmann <arnd@xxxxxxxx> writes:
> > On Wednesday, July 20, 2016 7:25:19 AM CEST Jes Sorensen wrote:
> >> Arnd Bergmann <arnd@xxxxxxxx> writes:
> >> Well it really all depends on how much time I have and how much others
> >> step up and help contribute to the code. For rtl8xxxu my plans are as
> >> follows:
> >> 1) rtl8188eu support, since this is the most widely distributed USB
> >> dongle which isn't currently supported by a non staging driver. I am
> >> currently working on this together with Andrea Merello.
> > Ok, cool.
> >> 2) Beacon support for IBSS and AP mode - hopefully this should make it
> >> possible to default rtl8xxxu for rtl8192cu/rtl8188cu devices and disable
> >> them in rtlwifi.
> > Do we have any indication that those two actually work in rtlwifi at the
> > moment? My experience seems to match the recommendations for all the
> > raspberry pi users that use yet another (worse looking) driver:
> > https://github.com/raspberrypi/linux/commit/9ee31007a5032a3afe2fcb20c36b34f0ad57df56
> I am not really authoritative on that one. I tried it in station mode
> and it didn't work well for me. I never played with AP mode - It may
> work better in IBSS or AP mode than it does in station mode. I don't
> like to pull the rug away under people, which is why I haven't pushed
> for this.
Right. Then again, for AP mode, all information on the web indicates
similar problems, recommending the out-of-tree driver and a custom
> > throughput for me is 2mbit/s, compared to my intel 2x2 wireless that gets
> > 5mbit/s on the same network, but I guess that doesn't really mean much
> > as long as I have problems with the infrastructure.
> Note the rtl8xxxu driver doesn't report speeds properly to
> NetworkMangler or 'iw' as the API for this relies on confirmed TX
> speeds, and I only have an easy way of retrieving RX speeds from the RTL
> device. The vendor driver probably fakes it.
This was the rx speed I got from downloading a file from a known server.
With the rtl8192cu driver, I could get no connection at all today,
and when I last tried, it stopped working after a few minutes at best.
> > This one:
> > Bus 001 Device 033: ID 0bda:8171 Realtek Semiconductor Corp. RTL8188SU
> > 802.11n WLAN Adapter
> > I bought the rtl8188su a while ago, while the rtl8188cus (0bda:8176)
> > is from this year. According to https://wikidevi.com/wiki/Realtek, it
> > seems to be one year older than the rtl8188cus and was almost as common
> > in its day. Apparently everyone that used to make ...su device replaced it
> > with a ...cu or the newer ...eu chips and that is all you can buy these days
> > on the low end.
> Gotcha, 8188su is the 1x1 version of it. I do have a 8192su in the
> drawer somewhere, but the TODO list is a bit long already
Yes, I was just agreeing here that it's not worth doing that one.
As far as I can see, the evolution of these devices is
Clearly there is no use working on the older ones before the latest
ones work well.