tcpdump mailing list archives

Re: Patches for wlan filtering


From: Guy Harris <guy () alum mit edu>
Date: Mon, 5 Nov 2007 18:12:08 -0800


On Nov 5, 2007, at 2:49 PM, Gianluca Varenni wrote:

I plan to compare this with the old version with the three possible link layers (bare 802.11, radiotap, PPI)

Actually, there are also 802.11+Prism radio header and 802.11+AVS radio header; I have some captures with, I think, all of those except for PPI, and will do some tests with those (I looked at the generated code for "tcp" for 802.11 and 802.11+radiotap, and checked the generated code for 802.11+Prism and 802.11+AVS to make sure the code to compute the offsets added in the fixed length of the radio header).
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