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https://github.com/espressif/esp-idf.git
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04df1f3a42
Enables building C3 examples in CI. Fixes related warnings/errors and disables examples that cannot run.
95 lines
2.3 KiB
C
95 lines
2.3 KiB
C
/*
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* WPA Supplicant - Scanning
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* Copyright (c) 2003-2019, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "utils/includes.h"
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#include "utils/common.h"
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#include "common/ieee802_11_defs.h"
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#include "wpa_supplicant_i.h"
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#include "drivers/driver.h"
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#include "common/ieee802_11_common.h"
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#include "bss.h"
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#include "scan.h"
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/**
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* wpa_supplicant_req_scan - Schedule a scan for neighboring access points
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* @wpa_s: Pointer to wpa_supplicant data
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* @sec: Number of seconds after which to scan
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* @usec: Number of microseconds after which to scan
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*
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* This function is used to schedule a scan for neighboring access points after
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* the specified time.
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*/
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void wpa_supplicant_req_scan(struct wpa_supplicant *wpa_s, int sec, int usec)
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{
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int ret;
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struct wpa_driver_scan_params *params;
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os_sleep(sec, usec);
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if (wpa_s->scanning) {
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wpa_dbg(wpa_s, MSG_DEBUG, "Already scanning - Return");
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return;
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}
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params = os_zalloc(sizeof(*params));
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if (wpa_s->wnm_mode) {
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/* Use the same memory */
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params->ssids[0].ssid = wpa_s->current_bss->ssid;
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params->ssids[0].ssid_len = wpa_s->current_bss->ssid_len;
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params->num_ssids = 1;
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}
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if (!is_zero_ether_addr(wpa_s->next_scan_bssid)) {
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/* Use the same memory */
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params->bssid = wpa_s->next_scan_bssid;
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}
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if (wpa_s->next_scan_chan)
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params->channel = wpa_s->next_scan_chan;
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wpa_s->scan_reason = REASON_WNM_BSS_TRANS_REQ;
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ret = wpa_supplicant_trigger_scan(wpa_s, params);
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os_free(params);
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if (ret < 0) {
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wpa_printf(MSG_ERROR, "Failed to issue scan - Return");
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return;
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}
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}
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/**
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* wpa_scan_get_ie - Fetch a specified information element from a scan result
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* @res: Scan result entry
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* @ie: Information element identitifier (WLAN_EID_*)
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* Returns: Pointer to the information element (id field) or %NULL if not found
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*
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* This function returns the first matching information element in the scan
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* result.
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*/
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const u8 * wpa_scan_get_ie(const struct wpa_scan_res *res, u8 ie)
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{
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size_t ie_len = res->ie_len;
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/* Use the Beacon frame IEs if res->ie_len is not available */
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if (!ie_len)
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ie_len = res->beacon_ie_len;
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return get_ie((const u8 *) (res + 1), ie_len, ie);
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}
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void wpa_scan_free_params(struct wpa_driver_scan_params *params)
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{
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if (params == NULL)
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return;
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os_free((u8 *) params->bssid);
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os_free(params);
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}
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