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Ticket #2342 (new defect)

Opened 12 years ago

MADWIFI TSFT field does not increase lineary

Reported by: hoene@uni-tuebingen.de Assigned to:
Priority: minor Milestone:
Component: madwifi: HAL Version:
Keywords: Cc:
Patch is attached: 0 Pending: 0

Description

Hello,

we are working on tof measurements and trilateration of WLAN devices.

Using the latest SVN version of madwifi, we observed that the timestamp field of packets received with a "05:0d.0 Ethernet controller: Atheros Communications, Inc. AR5212 802.11abg NIC (rev 01)" in monitoring mode do jump by very large values every second or so.

Somewhat with the extension of the TSF field from 15bit to more 64 bits is going wrong.

Attachments

tsft_jump.pcap (323.5 kB) - added by hoene@uni-tuebingen.de on 09/15/09 13:14:50.
In the attached file you use the jump in MAC timestamp between packet 897 and 898

Change History

09/15/09 13:14:50 changed by hoene@uni-tuebingen.de

  • attachment tsft_jump.pcap added.

In the attached file you use the jump in MAC timestamp between packet 897 and 898