PROBLEM: lots of frame errors with madwifi + PCI1225 CardBridge

From: Brad Corsello
Date: Mon Nov 14 2005 - 00:05:58 EST


Using a madwifi card on my Dell CP/x laptop gives lots of frame errors, sample ifconfig output:

ath0 Link encap:Ethernet HWaddr 00:02:6F:20:40:B0
inet addr:192.168.0.2 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::202:6fff:fe20:40b0/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1492 Metric:1
RX packets:2290848 errors:399943 dropped:0 overruns:0 frame:399943
TX packets:2815939 errors:39 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:199
RX bytes:2301147152 (2.1 GiB) TX bytes:2026627717 (1.8 GiB)
Interrupt:11 Memory:d0979000-d0989000


Possible similar problem with madwifi and an O2Micro bridge is solved here with patch (disabling read prefetch / write burst in CardBridge):

http://seclists.org/lists/linux-kernel/2005/Jul/5708.html

Attachments with system info, any help would be appreciated.

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Brad Corsello

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