Re: [9fans] wavelan config problems

[Axel Belinfante <Axel.Belinfante@cs.utwente.nl>]

> On Thu Apr 12 09:18:24 EDT 2001, Axel.Belinfante@cs.utwente.nl wrote:
> > Oops. My debugging was erroneous: the failing w_cmd was _not_ for the
> > strings writing, but for cmd type 0xfc22 meaning WType_XClear.
> > For that request, in w_cmd the test (rc&WresSts) succeeds, causing it
> > to return failure.
> > What does this WresSts actually mean?
>
> You probably have as much information about the hardware as I do, we failed
> miserably to get any real documentation out of the Wavelan group.

I'm sorry to hear that.

> > Moreover, I had a second look at the strings writing in the linux driver.
[snip]
> > I.e. ltv.len is not taken from the sizeof the record, but takes
> > the variable length of the string into account, rounded up to even.
> > ltv.slen is just the length of the string.
>
> Here are the words from the HCF-Lite docs, clearly we're wrong in the
> setting of slen, but you tell me if the value of ltv.len is variable
> or not:
>
> 	10.1.3	cnfDesiredSSID
> 	Word Offset		Field name			Size (words)
> 	0				RecordLen: 18		1
> 	1				RID: FC02			1
> 	2				cnfDesiredSSID		17

Seems to be pretty fixed (non-variable). Seems I looked to much at the
linux driver, believing what I was reading there to be the truth...

> > The linux driver is full of htoas etc. translations
> > (the BUGS section of the plan9 driver mentions need for endian checks).
> > The linux driver allocates WNameLen+1 sized name buffers
> > in its Ctrl struct (instead of WNameLen, which we do).
>
> After looking at the above problems I'm going to go over the driver again
> and try to weed out some of the endian issues before they come back to bite
> us. I note, for instance, that the definition of the Wltv struct will not
> work on an alpha (not that I can try that as our only alpha died last week).

I'm glad to hear that (you going over the driver, not the alpha dying).

> If we didn't use the stuff we write, we'd never find out how many bugs
> it has. Thanks for taking the time to work over it.

You are more than welcome - it is the least (and right now, probably the
only thing) I can do to give something back.

Axel.