Re: ieee80211 patches

On Thursday 25 August 2005 13:31, Jiri Benc wrote:

Our patches against latest ieee80211 branch can be found at
http://kernel.org/pub/linux/kernel/people/jbenc/

I hope to submit the adm8211 driver for review soon, but there's a bunch of 
code in the driver which probably belong in the ieee80211 code:

- Duplicate frame removal
- Definitions for all management payloads
- SIOCSIWENCODEEXT and SIOCGIWENCODEEXT
- AVS capture header in monitor mode
- Software Scanning
- Software Authentication & Association

Does that sound okay? I will start submitting patches to add those things if 
they should be in the ieee80211 code.

Thanks,
-Michael Wu

Hi,

Am Freitag 26 August 2005 02:49 schrieb Michael Wu:

I hope to submit the adm8211 driver for review soon, but there's a bunch of
code in the driver which probably belong in the ieee80211 code:

[...]

- AVS capture header in monitor mode

there has been a discussion about AVS or radiotap header on the ipw list that 
resulted in the inclusion of radiotap definitions in James' latest patches 
for ieee80211. Radiotap requires a libpcap upgrade, but can be extended 
easier. I'd like all linux wireless drivers to move to radiotap for statistic 
data so that userspace has just one format to parse, and a new driver would 
be a perfect target to begin.

Stefan

On Thu, 25 Aug 2005 20:49:52 -0400, Michael Wu wrote:

I hope to submit the adm8211 driver for review soon, but there's a bunch of 
code in the driver which probably belong in the ieee80211 code:

- Duplicate frame removal
- Definitions for all management payloads
- SIOCSIWENCODEEXT and SIOCGIWENCODEEXT
- AVS capture header in monitor mode
- Software Scanning
- Software Authentication & Association

Does that sound okay? I will start submitting patches to add those things if 
they should be in the ieee80211 code.

Sounds great. Could you post a pointer to the project?

Btw, Andrea Merello has a code for some of these features in his
rtl8180-sa2400 project (http://sourceforge.net/projects/rtl8180-sa2400)
too - we are trying to subsequently include them.

Thanks,

-- 
Jiri Benc
SUSE Labs

On Friday 26 August 2005 05:04, Stefan Rompf wrote:

quoted

- AVS capture header in monitor mode

there has been a discussion about AVS or radiotap header on the ipw list
that resulted in the inclusion of radiotap definitions in James' latest
patches for ieee80211. Radiotap requires a libpcap upgrade, but can be
extended easier. I'd like all linux wireless drivers to move to radiotap
for statistic data so that userspace has just one format to parse, and a
new driver would be a perfect target to begin.

Sounds like everyone agrees that radiotap is a superior header. I will remove 
AVS support and add radiotap support (if additional code is needed) once 
radiotap code is merged in ieee80211.

Thanks,
-Michael Wu

On Friday 26 August 2005 08:08, Jiri Benc wrote:

On Thu, 25 Aug 2005 20:49:52 -0400, Michael Wu wrote:

quoted

I hope to submit the adm8211 driver for review soon, but there's a bunch
of code in the driver which probably belong in the ieee80211 code:

- Duplicate frame removal
- Definitions for all management payloads
- SIOCSIWENCODEEXT and SIOCGIWENCODEEXT
- AVS capture header in monitor mode
- Software Scanning
- Software Authentication & Association

Does that sound okay? I will start submitting patches to add those things
if they should be in the ieee80211 code.

Sounds great. Could you post a pointer to the project?

http://aluminum.sourmilk.net/adm8211/index.php?path=netdev/

Btw, Andrea Merello has a code for some of these features in his
rtl8180-sa2400 project (http://sourceforge.net/projects/rtl8180-sa2400)
too - we are trying to subsequently include them.

Hmm..

- adm8211 supports shared key authentication, rtl8180-sa2400 only supports 
open authentication. (which is kinda okay when you consider that 802.11i 
doesn't use shared key)
- Both drivers do not support LEAP authentication.
- adm8211 supports WE18/WPA (partly via SIWGENIE, it doesn't generate WPA/RSN 
IEs itself)
- rtl8180-sa2400 supports a really simple master mode. (should something like 
hostapd be used instead for master mode?)
- rtl8180-sa2400 supports sending probe responses. adm8211 lets the hardware 
do it, though newer adm8211 cards can be told to hand it off to the software.
- rtl8180-sa2400 creates a completely random bssid in adhoc. adm8211 keeps the 
first 3 octets from the MAC addr.
- adm8211 supports sending & handling deauthentication and disassociation 
frames. I did not see definitions for those frames, so I assume there's no 
support there.
- adm8211 needs many hooks in scanning/authentication/association to set 
BSSID/SSID/AID/etc. in hardware.
- rtl8180-sa2400 doesn't seem to convert to little endian in a number of 
places. (not really major..)

-Michael Wu