Re: Recent fragility with if_wi, 802.11 adhoc/wep, and Tiger

Michal Mertl wrote:
> Robert Watson wrote:
> 
>>I fairly regularly use 802.11 adhoc with WEP to communicate between my 
>>6.x/7.x FreeBSD notebook using if_wi, and my Apple PowerBook running Mac 
>>OS X Tiger.  A few days ago, when I updated from a June to a July HEAD 
>>revision, this became quite "fragile".  Specifically, I often find that 
>>the Mac can't send to the FreeBSD box (ARP fails, etc), and that sometimes 
>>it will give an error when I ask it to re-connect to the ad hoc network. 
>>I find that if I ifconfig down/up if_wi, and likewise turn off and on the 
>>wireless on the PowerBook, it seems to recover.  I've not had a chance to 
>>really try and diagnose this at all -- i.e., does tcpdump show packets on 
>>either end, 802.11 state machine, etc.  I was wondering if anyone else has 
>>seen this problem, though.
> 
> 
> Yes, I'm also experiencing similar problems. The problems seem to happen
> also with different wireless cards and without wep. They were reported
> by Johann Hugo on 14th in an email titled "ath hostap - clients
> assosiated, but no comms" too.
> 
> Another problem with WiFi which Johann reported long time ago is that
> bridging on atheros (only?) AP works really bad. I get very varying ping
> response (50 - inf. ms). Sometimes it seems the packets get queued
> somewhere - after some time I receive several replies at once.

I routinely bridge ath cards (a wide variety) with bge using bridge and 
see no problems.  I get ~36 Mb/s in 11a w/ superg features and ~28 Mb/s 
w/ basic stuff (what you find in RELENG_6).  ping times are what you'd 
expect (<1ms).

	Sam