Re: [Madwifi-devel] crcerr and phyerr

[Darrell B. <bu...@on...>]

Derek-

What kind of atheros card is this? (I've been seeing reports of 5212's 
doing this over longer links, wondering if you're seeing something 
similar...)

   -Darrell

On Jul 18, 2004, at 6:07 PM, Derek Smithies wrote:

> Hi,
>  I am working with the atheros card in ad-hoc mode, and have a variant 
> of
> Andrew McGregors code.
>
> A look at tools/athstats shows that the card is generating lots of 
> crcerr
> and phyerr errors.
> For a sample of athstats 1
>
>  input   output altrate   short    long xretry crcerr  crypt  phyerr 
> rssi rate
>    23554       10       0       0      11      1 13676321      0 
> 25181785    9   0M
>        0        0       0       0       0      0      0      0       0 
>    9   0M
>        0        0       0       0       0      0      0      0       0 
>    9   0M
>        0        0       0       0       0      0      0      0       0 
>    9   0M
>
> A look at ifconfig,
>
> [root@dhcp54 tools]# ifconfig ath0
> ath0      Link encap:Ethernet  HWaddr 00:40:05:31:71:08
>           inet addr:192.168.210.210  Bcast:192.168.210.255  
> Mask:255.255.255.0
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:23594 errors:13676321 dropped:0 overruns:0 
> frame:13676321
>           TX packets:10 errors:1 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:199
>           RX bytes:1760391 (1.6 Mb)  TX bytes:619 (619.0 b)
>           Interrupt:10 Memory:d08e8000-d08f8000
>
> It is as though every frame received by my driver is tagged as having a
> crcerror and phyerror.
>
> Yet, and this is the bit I don't understand, if you run the latest 
> etheral
> on a non atheros card, and examine the full packet (frame headers
> included) there is no mention of crcerrors or physical errors.
>
> So, my question is::
> What explanation would account for the  crcerror and phyerr reports ?
>
> Derek.
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