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) {
52 "autoscan: sched_scan_plans set - use it instead");
56 if (wpa_s->autoscan && wpa_s->autoscan_priv) {
57 wpa_printf(MSG_DEBUG, "autoscan: Already initialized");
64 params = os_strchr(name, ':');
67 nlen = os_strlen(name);
73 for (i = 0; autoscan_modules[i]; i++) {
74 if (os_strncmp(name, autoscan_modules[i]->name, nlen) == 0) {
75 ops = autoscan_modules[i];
81 wpa_printf(MSG_ERROR, "autoscan: Could not find module "
82 "matching the parameter '%s'", name);
86 scan_plans = os_malloc(sizeof(*wpa_s->sched_scan_plans));
90 wpa_s->autoscan_params = NULL;
92 wpa_s->autoscan_priv = ops->init(wpa_s, params);
93 if (!wpa_s->autoscan_priv) {
98 scan_plans[0].interval = 5;
99 scan_plans[0].iterations = 0;
100 os_free(wpa_s->sched_scan_plans);
101 wpa_s->sched_scan_plans = scan_plans;
102 wpa_s->sched_scan_plans_num = 1;
103 wpa_s->autoscan = ops;
105 wpa_printf(MSG_DEBUG, "autoscan: Initialized module '%s' with "
106 "parameters '%s'", ops->name, params);
111 * Cancelling existing scan requests, if any.
113 wpa_supplicant_cancel_sched_scan(wpa_s);
114 wpa_supplicant_cancel_scan(wpa_s);
117 * Firing first scan, which will lead to call autoscan_notify_scan.
125 void autoscan_deinit(struct wpa_supplicant *wpa_s)
127 if (wpa_s->autoscan && wpa_s->autoscan_priv) {
128 wpa_printf(MSG_DEBUG, "autoscan: Deinitializing module '%s'",
129 wpa_s->autoscan->name);
130 wpa_s->autoscan->deinit(wpa_s->autoscan_priv);
131 wpa_s->autoscan = NULL;
132 wpa_s->autoscan_priv = NULL;
134 wpa_s->scan_interval = 5;
136 os_free(wpa_s->sched_scan_plans);
137 wpa_s->sched_scan_plans = NULL;
138 wpa_s->sched_scan_plans_num = 0;
143 int autoscan_notify_scan(struct wpa_supplicant *wpa_s,
144 struct wpa_scan_results *scan_res)
148 if (wpa_s->autoscan && wpa_s->autoscan_priv) {
149 interval = wpa_s->autoscan->notify_scan(wpa_s->autoscan_priv,
155 wpa_s->scan_interval = interval;
156 wpa_s->sched_scan_plans[0].interval = interval;