2 * WPA Supplicant - auto scan
3 * Copyright (c) 2012, Intel Corporation. All rights reserved.
4 * Copyright 2015 Intel Deutschland GmbH
6 * This software may be distributed under the terms of the BSD license.
7 * See README for more details.
14 #include "wpa_supplicant_i.h"
20 static const struct autoscan_ops * autoscan_modules[] = {
21 #ifdef CONFIG_AUTOSCAN_EXPONENTIAL
22 &autoscan_exponential_ops,
23 #endif /* CONFIG_AUTOSCAN_EXPONENTIAL */
24 #ifdef CONFIG_AUTOSCAN_PERIODIC
25 &autoscan_periodic_ops,
26 #endif /* CONFIG_AUTOSCAN_PERIODIC */
31 static void request_scan(struct wpa_supplicant *wpa_s)
33 wpa_s->scan_req = MANUAL_SCAN_REQ;
35 if (wpa_supplicant_req_sched_scan(wpa_s))
36 wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval, 0);
40 int autoscan_init(struct wpa_supplicant *wpa_s, int req_scan)
42 const char *name = wpa_s->conf->autoscan;
46 const struct autoscan_ops *ops = NULL;
47 struct sched_scan_plan *scan_plans;
49 /* Give preference to scheduled scan plans if supported/configured */
50 if (wpa_s->sched_scan_plans)
53 if (wpa_s->autoscan && wpa_s->autoscan_priv)
59 params = os_strchr(name, ':');
62 nlen = os_strlen(name);
68 for (i = 0; autoscan_modules[i]; i++) {
69 if (os_strncmp(name, autoscan_modules[i]->name, nlen) == 0) {
70 ops = autoscan_modules[i];
76 wpa_printf(MSG_ERROR, "autoscan: Could not find module "
77 "matching the parameter '%s'", name);
81 scan_plans = os_malloc(sizeof(*wpa_s->sched_scan_plans));
85 wpa_s->autoscan_params = NULL;
87 wpa_s->autoscan_priv = ops->init(wpa_s, params);
88 if (!wpa_s->autoscan_priv) {
93 scan_plans[0].interval = 5;
94 scan_plans[0].iterations = 0;
95 os_free(wpa_s->sched_scan_plans);
96 wpa_s->sched_scan_plans = scan_plans;
97 wpa_s->sched_scan_plans_num = 1;
98 wpa_s->autoscan = ops;
100 wpa_printf(MSG_DEBUG, "autoscan: Initialized module '%s' with "
101 "parameters '%s'", ops->name, params);
106 * Cancelling existing scan requests, if any.
108 wpa_supplicant_cancel_sched_scan(wpa_s);
109 wpa_supplicant_cancel_scan(wpa_s);
112 * Firing first scan, which will lead to call autoscan_notify_scan.
120 void autoscan_deinit(struct wpa_supplicant *wpa_s)
122 if (wpa_s->autoscan && wpa_s->autoscan_priv) {
123 wpa_printf(MSG_DEBUG, "autoscan: Deinitializing module '%s'",
124 wpa_s->autoscan->name);
125 wpa_s->autoscan->deinit(wpa_s->autoscan_priv);
126 wpa_s->autoscan = NULL;
127 wpa_s->autoscan_priv = NULL;
129 wpa_s->scan_interval = 5;
131 os_free(wpa_s->sched_scan_plans);
132 wpa_s->sched_scan_plans = NULL;
133 wpa_s->sched_scan_plans_num = 0;
138 int autoscan_notify_scan(struct wpa_supplicant *wpa_s,
139 struct wpa_scan_results *scan_res)
143 if (wpa_s->autoscan && wpa_s->autoscan_priv) {
144 interval = wpa_s->autoscan->notify_scan(wpa_s->autoscan_priv,
150 wpa_s->scan_interval = interval;
151 wpa_s->sched_scan_plans[0].interval = interval;