gas_query.c File Reference

Generic advertisement service (GAS) query Copyright (c) 2011-2014, Qualcomm Atheros, Inc. Copyright (c) 2011-2014, Jouni Malinen j@w1..nosp@m.fi More...

#include "includes.h"
#include "common.h"
#include "utils/eloop.h"
#include "common/ieee802_11_defs.h"
#include "common/gas.h"
#include "common/wpa_ctrl.h"
#include "rsn_supp/wpa.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"
#include "offchannel.h"
#include "gas_query.h"

Data Structures
struct	gas_query_pending
	Pending GAS query. More...
struct	gas_query
	Internal GAS query data. More...

Macros
#define	GAS_QUERY_TIMEOUT_PERIOD   2
	GAS query timeout in seconds.

Functions
struct gas_query *	gas_query_init (struct wpa_supplicant *wpa_s)
	Initialize GAS query component. More...
void	gas_query_deinit (struct gas_query *gas)
	Deinitialize GAS query component. More...
int	gas_query_rx (struct gas_query *gas, const u8 *da, const u8 *sa, const u8 *bssid, u8 categ, const u8 *data, size_t len, int freq)
	Indicate reception of a Public Action or Protected Dual frame. More...
int	gas_query_req (struct gas_query *gas, const u8 *dst, int freq, struct wpabuf *req, void(*cb)(void *ctx, const u8 *dst, u8 dialog_token, enum gas_query_result result, const struct wpabuf *adv_proto, const struct wpabuf *resp, u16 status_code), void *ctx)
	Request a GAS query. More...
void	gas_query_cancel (struct gas_query *gas, const u8 *dst, u8 dialog_token)
	Cancel a pending GAS query. More...

Detailed Description

Generic advertisement service (GAS) query Copyright (c) 2011-2014, Qualcomm Atheros, Inc. Copyright (c) 2011-2014, Jouni Malinen j@w1..nosp@m.fi

Function Documentation

void gas_query_cancel	(	struct gas_query *	gas,
		const u8 *	dst,
		u8	dialog_token
	)

Cancel a pending GAS query.

Parameters

gas	GAS query data from gas_query_init()
dst	Destination MAC address for the query
dialog_token	Dialog token from gas_query_req()

void gas_query_deinit

(

struct gas_query *

gas

)

Deinitialize GAS query component.

Parameters

gas	GAS query data from gas_query_init()

struct gas_query* gas_query_init

(

struct wpa_supplicant *

wpa_s

)

Initialize GAS query component.

Parameters

wpa_s

Pointer to wpa_supplicant data

Returns

Pointer to GAS query data or NULL on failure

int gas_query_req	(	struct gas_query *	gas,
		const u8 *	dst,
		int	freq,
		struct wpabuf *	req,
		void(*)(void *ctx, const u8 *dst, u8 dialog_token, enum gas_query_result result, const struct wpabuf *adv_proto, const struct wpabuf *resp, u16 status_code)	cb,
		void *	ctx
	)

Request a GAS query.

Parameters

gas	GAS query data from gas_query_init()
dst	Destination MAC address for the query
freq	Frequency (in MHz) for the channel on which to send the query
req	GAS query payload (to be freed by gas_query module in case of success return)
cb	Callback function for reporting GAS query result and response
ctx	Context pointer to use with the cb call

Returns

dialog token (>= 0) on success or -1 on failure

int gas_query_rx	(	struct gas_query *	gas,
		const u8 *	da,
		const u8 *	sa,
		const u8 *	bssid,
		u8	categ,
		const u8 *	data,
		size_t	len,
		int	freq
	)

Indicate reception of a Public Action or Protected Dual frame.

Parameters

gas	GAS query data from gas_query_init()
da	Destination MAC address of the Action frame
sa	Source MAC address of the Action frame
bssid	BSSID of the Action frame
categ	Category of the Action frame
data	Payload of the Action frame
len	Length of data
freq	Frequency (in MHz) on which the frame was received

Returns

0 if the Public Action frame was a GAS frame or -1 if not