Mailing List Archive: Ethereal: dev

WLAN LLC type for Ethereal on Windows XP

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Paul_Lin at ralinktech

Jun 27, 2006, 5:36 AM

Post #1 of 2 (878 views)
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WLAN LLC type for Ethereal on Windows XP

I am writing WLAN windows driver to support Ethereal. All raw packets
are send to Ethereal successfully without issue. However, Ethereal will
always decode the packet as Ethernet II as LLC. There are no native
802.11 format in Windows XP, the packet has to pass to OS as 802.3
frame. In fact, we pass the whole 802.11 packet up without changing it
to 802.3 format. The question is how do we let Ethereal know it's 802.11
frame and not decoding it as 802.3 format?

Thanks for any suggestion.

Paul Lin

=========================================================

guy at alum

Jun 27, 2006, 9:54 AM

Post #2 of 2 (824 views)
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Re: WLAN LLC type for Ethereal on Windows XP [In reply to]

Paul Lin wrote:
> I am writing WLAN windows driver to support Ethereal. All raw packets
> are send to Ethereal successfully without issue. However, Ethereal will
> always decode the packet as Ethernet II as LLC. There are no native
> 802.11 format in Windows XP, the packet has to pass to OS as 802.3
> frame. In fact, we pass the whole 802.11 packet up without changing it
> to 802.3 format. The question is how do we let Ethereal know it’s 802.11
> frame and not decoding it as 802.3 format?

Ask Microsoft and the WinPcap developers. Ethereal finds the link-layer
type from libpcap/WinPcap, and libpcap/WinPcap finds it from NDIS, which
is Microsoft code.
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