_AirpcapChannelInfo Struct Reference
[AirPcap definitions and data structures]

Channel information. Used by AirpcapSetDeviceChannelEx(), AirpcapGetDeviceChannelEx(), AirpcapGetDeviceSupportedChannels(). More...

#include <airpcap.h>


Data Fields

UINT Frequency
 Channel frequency, in MHz.
CHAR ExtChannel
 802.11n specific. Offset of the extension channel in case of 40MHz channels.
UCHAR Flags
 Channel Flags. The only flag supported at this time is AIRPCAP_CIF_TX_ENABLED.
UCHAR Reserved [2]
 Reserved. It should be set to {0,0}.


Detailed Description

Channel information. Used by AirpcapSetDeviceChannelEx(), AirpcapGetDeviceChannelEx(), AirpcapGetDeviceSupportedChannels().

Field Documentation

Channel frequency, in MHz.

802.11n specific. Offset of the extension channel in case of 40MHz channels.

Possible values are -1, 0 +1:

  • -1 means that the extension channel should be below the control channel (e.g. Control = 5 and Extension = 1)
  • 0 means that no extension channel should be used (20MHz channels or legacy mode)
  • +1 means that the extension channel should be above the control channel (e.g. Control = 1 and Extension = 5)

In case of 802.11a/b/g channels (802.11n legacy mode), this field should be set to 0.

Channel Flags. The only flag supported at this time is AIRPCAP_CIF_TX_ENABLED.

Reserved. It should be set to {0,0}.


AirPcap documentation. Copyright (c) 2006-2008 CACE Technologies, Inc. All rights reserved.