802_11-utils.h File Reference

#include <wireshark.h>

Go to the source code of this file.

Macros
#define	FREQ_IS_BG(freq)   ((freq) <= 2484)
#define	CHAN_IS_BG(chan)   ((chan) <= 14)
#define	FREQ_IS_6G(freq)   (5950 <= (freq) && (freq) <= 7125)
#define	RATE_IS_DSSS(rate)
#define	RATE_IS_OFDM(rate)

Functions
WS_DLL_PUBLIC int	ieee80211_mhz_to_chan (unsigned freq)
WS_DLL_PUBLIC unsigned	ieee80211_chan_to_mhz (int chan, bool is_bg)
WS_DLL_PUBLIC char *	ieee80211_mhz_to_str (unsigned freq)
WS_DLL_PUBLIC unsigned	ieee80211_chan_band_to_mhz (int chan, bool is_bg, bool is_6ghz)

Detailed Description

802.11 utilities.

Macro Definition Documentation

RATE_IS_DSSS

#define RATE_IS_DSSS

(

rate

)

Value:

    ((rate) == 2 /* 1 Mb/s */ || \
     (rate) == 4 /* 2 Mb/s */ || \
     (rate) == 11 /* 5.5 Mb/s */ || \
     (rate) == 22 /* 11 Mb/s */ || \
     (rate) == 44 /* 22 Mb/s */ || \
     (rate) == 66 /* 33 Mb/s */)

RATE_IS_OFDM

#define RATE_IS_OFDM

(

rate

)

Value:

    ((rate) == 12 /* 6 Mb/s */ || \
     (rate) == 18 /* 9 Mb/s */ || \
     (rate) == 24 /* 12 Mb/s */ || \
     (rate) == 36 /* 18 Mb/s */ || \
     (rate) == 48 /* 24 Mb/s */ || \
     (rate) == 72 /* 36 Mb/s */ || \
     (rate) == 96 /* 48 Mb/s */ || \
     (rate) == 108 /* 54 Mb/s */)

Function Documentation

ieee80211_chan_to_mhz()

WS_DLL_PUBLIC unsigned ieee80211_chan_to_mhz	(	int	chan,
		bool	is_bg
	)

Given an 802.11 channel number and a band type, return a center frequency.

Parameters

chan	Channel number
is_bg	true if the channel is a b/g channel, false otherwise.

Returns

The equivalent frequency or 0 if no match is found.

ieee80211_mhz_to_chan()

WS_DLL_PUBLIC int ieee80211_mhz_to_chan

(

unsigned

freq

)

Given a center frequency in MHz, return a channel number.

Parameters

freq	Frequency in MHz.

Returns

The equivalent channel or -1 if no match is found.

ieee80211_mhz_to_str()

WS_DLL_PUBLIC char * ieee80211_mhz_to_str

(

unsigned

freq

)

Given an 802.11 channel center frequency in MHz, return a string representation.

Parameters

freq	Frequench in MHz.

Returns

A string showing the frequency, channel number, and type. The string must be freed with g_free() after use.