ESP-IDF
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Outline
#include "utils/includes.h"
#include "utils/common.h"
#include "common/ieee802_11_defs.h"
#include "wpa_supplicant_i.h"
#include "drivers/driver.h"
#include "common/ieee802_11_common.h"
#include "bss.h"
#include "scan.h"
wpa_supplicant_req_scan(struct wpa_supplicant *, int, int)
wpa_scan_get_ie(const struct wpa_scan_res *, u8)
wpa_scan_free_params(struct wpa_driver_scan_params *)
Files
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SourceVuESP-IDF Framework and ExamplesESP-IDFcomponents/wpa_supplicant/src/common/scan.c
 
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/* * WPA Supplicant - Scanning * Copyright (c) 2003-2019, Jouni Malinen <j@w1.fi> * * This software may be distributed under the terms of the BSD license. * See README for more details. *//* ... */ #include "utils/includes.h" #include "utils/common.h" #include "common/ieee802_11_defs.h" #include "wpa_supplicant_i.h" #include "drivers/driver.h" #include "common/ieee802_11_common.h" #include "bss.h" #include "scan.h"8 includes /** * wpa_supplicant_req_scan - Schedule a scan for neighboring access points * @wpa_s: Pointer to wpa_supplicant data * @sec: Number of seconds after which to scan * @usec: Number of microseconds after which to scan * * This function is used to schedule a scan for neighboring access points after * the specified time. *//* ... */ void wpa_supplicant_req_scan(struct wpa_supplicant *wpa_s, int sec, int usec) { int ret; struct wpa_driver_scan_params *params; os_sleep(sec, usec); if (wpa_s->scanning) { wpa_dbg(wpa_s, MSG_DEBUG, "Already scanning - Return"); return; }{...} if (!wpa_s->current_bss) { wpa_dbg(wpa_s, MSG_INFO, "Current BSS is null - Return"); return; }{...} params = os_zalloc(sizeof(*params)); if (!params) { wpa_printf(MSG_ERROR, "Memory allocation failed"); return; }{...} #ifdef CONFIG_WNM if (wpa_s->wnm_mode) { /* Use the same memory */ params->ssids[0].ssid = wpa_s->current_bss->ssid; params->ssids[0].ssid_len = wpa_s->current_bss->ssid_len; params->num_ssids = 1; }{...} #endif/* ... */ if (!is_zero_ether_addr(wpa_s->next_scan_bssid)) { /* Use the same memory */ params->bssid = wpa_s->next_scan_bssid; }{...} if (wpa_s->next_scan_chan) params->channel = wpa_s->next_scan_chan; wpa_s->scan_reason = REASON_WNM_BSS_TRANS_REQ; ret = wpa_supplicant_trigger_scan(wpa_s, params); os_free(params); if (ret < 0) { wpa_printf(MSG_ERROR, "Failed to issue scan - Return"); return; }{...} }{ ... } /** * wpa_scan_get_ie - Fetch a specified information element from a scan result * @res: Scan result entry * @ie: Information element identitifier (WLAN_EID_*) * Returns: Pointer to the information element (id field) or %NULL if not found * * This function returns the first matching information element in the scan * result. *//* ... */ const u8 * wpa_scan_get_ie(const struct wpa_scan_res *res, u8 ie) { size_t ie_len = res->ie_len; /* Use the Beacon frame IEs if res->ie_len is not available */ if (!ie_len) ie_len = res->beacon_ie_len; return get_ie((const u8 *) (res + 1), ie_len, ie); }{ ... } void wpa_scan_free_params(struct wpa_driver_scan_params *params) { if (params == NULL) return; os_free((u8 *) params->bssid); os_free(params); }{ ... }
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