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Document gas_query.c functions

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Signed-hostap: Jouni Malinen <j@w1.fi>
This commit is contained in:
Jouni Malinen 2012-12-22 11:58:33 +02:00
parent 2f3101d8df
commit a38fdf1c69
2 changed files with 46 additions and 0 deletions
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43
wpa_supplicant/gas_query.c
View file

@ -19,9 +19,13 @@
#include "gas_query.h"
/** GAS query timeout in seconds */
#define GAS_QUERY_TIMEOUT_PERIOD 5
/**
* struct gas_query_pending - Pending GAS query
*/
struct gas_query_pending {
struct dl_list list;
u8 addr[ETH_ALEN];
@ -40,6 +44,9 @@ struct gas_query_pending {
void *ctx;
};
/**
* struct gas_query - Internal GAS query data
*/
struct gas_query {
struct wpa_supplicant *wpa_s;
struct dl_list pending; /* struct gas_query_pending */
@ -50,6 +57,11 @@ static void gas_query_tx_comeback_timeout(void *eloop_data, void *user_ctx);
static void gas_query_timeout(void *eloop_data, void *user_ctx);
/**
* gas_query_init - Initialize GAS query component
* @wpa_s: Pointer to wpa_supplicant data
* Returns: Pointer to GAS query data or %NULL on failure
*/
struct gas_query * gas_query_init(struct wpa_supplicant *wpa_s)
{
struct gas_query *gas;
@ -82,6 +94,10 @@ static void gas_query_done(struct gas_query *gas,
}
/**
* gas_query_deinit - Deinitialize GAS query component
* @gas: GAS query data from gas_query_init()
*/
void gas_query_deinit(struct gas_query *gas)
{
struct gas_query_pending *query, *next;
@ -274,6 +290,17 @@ static void gas_query_rx_comeback(struct gas_query *gas,
}
/**
* gas_query_rx - Indicate reception of a Public Action frame
* @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
* @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
*/
int gas_query_rx(struct gas_query *gas, const u8 *da, const u8 *sa,
const u8 *bssid, const u8 *data, size_t len, int freq)
{
@ -414,6 +441,16 @@ static int gas_query_dialog_token_available(struct gas_query *gas,
}
/**
* gas_query_req - Request a GAS query
* @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
* @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_req(struct gas_query *gas, const u8 *dst, int freq,
struct wpabuf *req,
void (*cb)(void *ctx, const u8 *dst, u8 dialog_token,
@ -465,6 +502,12 @@ int gas_query_req(struct gas_query *gas, const u8 *dst, int freq,
}
/**
* gas_query_cancel - Cancel a pending GAS query
* @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_cancel(struct gas_query *gas, const u8 *dst, u8 dialog_token)
{
struct gas_query_pending *query;

3
wpa_supplicant/gas_query.h
View file

@ -19,6 +19,9 @@ void gas_query_deinit(struct gas_query *gas);
int gas_query_rx(struct gas_query *gas, const u8 *da, const u8 *sa,
const u8 *bssid, const u8 *data, size_t len, int freq);
/**
* enum gas_query_result - GAS query result
*/
enum gas_query_result {
GAS_QUERY_SUCCESS,
GAS_QUERY_FAILURE,