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SubjectRe: Networking Status pre #2
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On Sun, 12 May 1996, Alan Cox wrote:

> 8. bogus packet size/mismatched pointers reports on 8390 based ethernet
> drivers.
>
> I want to see how bad these problems actually are and how many people are
> seeing them - also hopefully a pattern so try and include hardware info.

I'm getting these errors with 1.99.3 frequently.

I have:

P-66 (ALI chipset), 32MB RAM, SMC Ether-EZ in PIO mode, Adaptec 2940WU + disk.
I've got IP aliasing compiled as a module, not active. IP Firewalling
compiled, not yet active. Nothing else that's particularly weird.

A typical message would be:

May 14 17:40:49 crimethink kernel: UDP: bad checksum. From C702FC0A:53 to CC65D301:53 ulen 219

I can reliably produce a bad packet by doing a `ping -s 1000 local-ip-address`
which will produce a bad packet consistantly. It seems that the bad data
crops up every "page" or so. That's not very scientific, save that it seems
that the lossage occurs only every 4096 or 8192 bytes...

wrong data byte #978 should be 0xd2 but was 0x0
f0 fe 98 31 da 6e 9 0 8 9 a b c d e f 10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f
[snip]
80 81 82 83 84 85 86 87 88 89 8a 8b 8c 8d 8e 8f 90 91 92 93 94 95 96 97 98 99 9a 9b 9c 9d 9e 9f
a0 a1 a2 a3 a4 a5 a6 a7 a8 a9 aa ab ac ad ae af b0 b1 b2 b3 b4 b5 b6 b7 b8 b9 ba bb bc bd be bf
c0 c1 c2 c3 c4 c5 c6 c7 c8 c9 ca cb cc cd ce cf d0 d1 0 80 28 80 0 5e 0 0 c0 36 5b cf 8 0
-----------------------------------
Same lossage each time.

Despite this uglyness, the system has been up for 21 hours so far...

Regards,

Steve Thompson, System Administrator & Professional Malcontent
- --------------------------------------------------------------
"You're face alabaster/no cracks in the plaster/image carefully
contrived." - Vital Sines


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