ieee802_11_common.h File Reference

IEEE 802.11 Common routines. More...

Go to the source code of this file.

Data Structures
struct	mb_ies_info
struct	ieee802_11_elems
struct	hostapd_wmm_ac_params

Macros
#define	MAX_NOF_MB_IES_SUPPORTED   5

Enumerations
enum	ParseRes { ParseOK = 0, ParseUnknown = 1, ParseFailed = -1 }

Functions
ParseRes	ieee802_11_parse_elems (const u8 *start, size_t len, struct ieee802_11_elems *elems, int show_errors)
	Parse information elements in management frames. More...
int	ieee802_11_ie_count (const u8 *ies, size_t ies_len)
struct wpabuf *	ieee802_11_vendor_ie_concat (const u8 *ies, size_t ies_len, u32 oui_type)
const u8 *	get_hdr_bssid (const struct ieee80211_hdr *hdr, size_t len)
int	hostapd_config_wmm_ac (struct hostapd_wmm_ac_params wmm_ac_params[], const char *name, const char *val)
enum hostapd_hw_mode	ieee80211_freq_to_chan (int freq, u8 *channel)
int	ieee80211_chan_to_freq (const char *country, u8 op_class, u8 chan)
	Convert channel info to frequency. More...
enum hostapd_hw_mode	ieee80211_freq_to_channel_ext (unsigned int freq, int sec_channel, int vht, u8 *op_class, u8 *channel)
	Convert frequency into channel info for HT40 and VHT. DFS channels are not covered. More...
int	ieee80211_is_dfs (int freq)
int	supp_rates_11b_only (struct ieee802_11_elems *elems)
int	mb_ies_info_by_ies (struct mb_ies_info *info, const u8 *ies_buf, size_t ies_len)
struct wpabuf *	mb_ies_by_info (struct mb_ies_info *info)
const char *	fc2str (u16 fc)

Detailed Description

IEEE 802.11 Common routines.

Function Documentation

int ieee80211_chan_to_freq	(	const char *	country,
		u8	op_class,
		u8	chan
	)

Convert channel info to frequency.

Parameters

country	Country code, if known; otherwise, global operating class is used
op_class	Operating class
chan	Channel number

Returns

Frequency in MHz or -1 if the specified channel is unknown

enum hostapd_hw_mode ieee80211_freq_to_channel_ext	(	unsigned int	freq,
		int	sec_channel,
		int	vht,
		u8 *	op_class,
		u8 *	channel
	)

Convert frequency into channel info for HT40 and VHT. DFS channels are not covered.

Parameters

freq	Frequency (MHz) to convert
sec_channel	0 = non-HT40, 1 = sec. channel above, -1 = sec. channel below
vht	0 - non-VHT, 1 - 80 MHz
op_class	Buffer for returning operating class
channel	Buffer for returning channel number

Returns

hw_mode on success, NUM_HOSTAPD_MODES on failure

ParseRes ieee802_11_parse_elems	(	const u8 *	start,
		size_t	len,
		struct ieee802_11_elems *	elems,
		int	show_errors
	)

Parse information elements in management frames.

Parameters

start	Pointer to the start of IEs
len	Length of IE buffer in octets
elems	Data structure for parsed elements
show_errors	Whether to show parsing errors in debug log

Returns

Parsing result