[Winpcap-users] how Wireshark get linktype?

[Gianluca Varenni]

On Windows/WinPcap the only devices that support any of the wireless DLTs 
(DLT_IEEE802_11, DLT_IEEE802_11_RADIO or eventually DLT_PPI) are the AirPcap 
adapters.

Are you using an AirPcap adapter?

Have a nice day
GV

----- Original Message ----- 
From: "Joshua (Shiwei) Zhao" <swzhao at gmail.com>
To: "Developer support list for Wireshark" <wireshark-dev at wireshark.org>; 
<winpcap-users at winpcap.org>
Sent: Tuesday, September 01, 2009 4:41 PM
Subject: [Winpcap-users] how Wireshark get linktype?


> I'm using Wireshark 1.0.4 with a WiFi device. When I select the device
> in capture options panel, I cannot get the expected linktype
> DLT_IEEE802_11_RADIO.
> I know the device driver is in monitor mode and it works if I manually
> add a DLT_IEEE802_11_RADIO type there and choose it.
> But how does Wireshark/winpcap get the default type, via a OID request
> OID_GEN_MEDIA_SUPPORTED or OID_GEN_MEDIA_IN_USE?
> I believe the driver does have support on these two OIDs.
>
> Is this a known problem or is there sth not compatible between my
> driver and Wireshark/winpcap? I know Wireshark calls pcap_datalink()
> to retrieve the media type.
>
> Many thanks,
> Joshua
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