[Madwifi-users] Rx invalid nwid; oldish bug.

[Josh L. <jo...@te...>]

I'm currently working on a bug that's being exhibited by at least the
thinkpads in our office.  Both of these have the IBM ar5212 part.  On 
CVS prior to 2004-08-05, everything works beautifully.  After the tree
merge that went in on 2004-08-06, the devices start to break in the
following way:

o) Lots and lots of "Rx invalid nwid" events pile up as soon as the
interface is brought up.

o) Intermittent packet loss.  It seems like the interface will start
losing all packets for a second or so at a time, i.e. in a ping-flood
test, you'll be doing fine and then lose 50 in a row, and then pick back
up and start doing fine again.

We verified this behavior and the fixes for it on vanilla 2.4.27,
2.4.28, and 2.6.9 (with a quick fix for the proc_dointvec API change);
all behaved identically.

The AP we're using is a Linksys WRT54G with firmware revision 1.42.3 set
for 11g only, and using 40-bit wep. (Yes, I know that's rampantly
insecure).

Lspci and other information about the machines used in the test is here:

http://downloads.emperorlinux.com/research/lkml/atheros_under_2.6/

-- 
Josh Litherland (jo...@em...)
Emperor Linux, Inc.