32c02261dd
Add the option to configure scheduled scan plans in the config file. Each scan plan specifies the interval between scans and the number of scan iterations. The last plan will run infinitely and thus specifies only the interval between scan iterations. usage: sched_scan_plans=<interval:iterations> <interval2:iterations2> ... <interval> Signed-off-by: Avraham Stern <avraham.stern@intel.com>
164 lines
3.6 KiB
C
164 lines
3.6 KiB
C
/*
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* WPA Supplicant - auto scan
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* Copyright (c) 2012, Intel Corporation. All rights reserved.
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* Copyright 2015 Intel Deutschland GmbH
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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 "includes.h"
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#include "common.h"
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#include "config.h"
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#include "wpa_supplicant_i.h"
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#include "bss.h"
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#include "scan.h"
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#include "autoscan.h"
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#ifdef CONFIG_AUTOSCAN_EXPONENTIAL
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extern const struct autoscan_ops autoscan_exponential_ops;
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#endif /* CONFIG_AUTOSCAN_EXPONENTIAL */
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#ifdef CONFIG_AUTOSCAN_PERIODIC
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extern const struct autoscan_ops autoscan_periodic_ops;
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#endif /* CONFIG_AUTOSCAN_PERIODIC */
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static const struct autoscan_ops * autoscan_modules[] = {
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#ifdef CONFIG_AUTOSCAN_EXPONENTIAL
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&autoscan_exponential_ops,
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#endif /* CONFIG_AUTOSCAN_EXPONENTIAL */
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#ifdef CONFIG_AUTOSCAN_PERIODIC
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&autoscan_periodic_ops,
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#endif /* CONFIG_AUTOSCAN_PERIODIC */
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NULL
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};
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static void request_scan(struct wpa_supplicant *wpa_s)
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{
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wpa_s->scan_req = MANUAL_SCAN_REQ;
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if (wpa_supplicant_req_sched_scan(wpa_s))
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wpa_supplicant_req_scan(wpa_s, wpa_s->scan_interval, 0);
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}
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int autoscan_init(struct wpa_supplicant *wpa_s, int req_scan)
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{
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const char *name = wpa_s->conf->autoscan;
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const char *params;
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size_t nlen;
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int i;
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const struct autoscan_ops *ops = NULL;
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struct sched_scan_plan *scan_plans;
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/* Give preference to scheduled scan plans if supported/configured */
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if (wpa_s->sched_scan_plans)
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return 0;
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if (wpa_s->autoscan && wpa_s->autoscan_priv)
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return 0;
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if (name == NULL)
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return 0;
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params = os_strchr(name, ':');
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if (params == NULL) {
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params = "";
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nlen = os_strlen(name);
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} else {
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nlen = params - name;
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params++;
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}
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for (i = 0; autoscan_modules[i]; i++) {
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if (os_strncmp(name, autoscan_modules[i]->name, nlen) == 0) {
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ops = autoscan_modules[i];
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break;
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}
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}
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if (ops == NULL) {
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wpa_printf(MSG_ERROR, "autoscan: Could not find module "
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"matching the parameter '%s'", name);
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return -1;
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}
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scan_plans = os_malloc(sizeof(*wpa_s->sched_scan_plans));
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if (!scan_plans)
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return -1;
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wpa_s->autoscan_params = NULL;
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wpa_s->autoscan_priv = ops->init(wpa_s, params);
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if (!wpa_s->autoscan_priv) {
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os_free(scan_plans);
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return -1;
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}
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scan_plans[0].interval = 5;
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scan_plans[0].iterations = 0;
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os_free(wpa_s->sched_scan_plans);
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wpa_s->sched_scan_plans = scan_plans;
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wpa_s->sched_scan_plans_num = 1;
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wpa_s->autoscan = ops;
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wpa_printf(MSG_DEBUG, "autoscan: Initialized module '%s' with "
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"parameters '%s'", ops->name, params);
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if (!req_scan)
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return 0;
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/*
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* Cancelling existing scan requests, if any.
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*/
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wpa_supplicant_cancel_sched_scan(wpa_s);
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wpa_supplicant_cancel_scan(wpa_s);
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/*
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* Firing first scan, which will lead to call autoscan_notify_scan.
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*/
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request_scan(wpa_s);
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return 0;
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}
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void autoscan_deinit(struct wpa_supplicant *wpa_s)
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{
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if (wpa_s->autoscan && wpa_s->autoscan_priv) {
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wpa_printf(MSG_DEBUG, "autoscan: Deinitializing module '%s'",
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wpa_s->autoscan->name);
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wpa_s->autoscan->deinit(wpa_s->autoscan_priv);
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wpa_s->autoscan = NULL;
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wpa_s->autoscan_priv = NULL;
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wpa_s->scan_interval = 5;
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os_free(wpa_s->sched_scan_plans);
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wpa_s->sched_scan_plans = NULL;
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wpa_s->sched_scan_plans_num = 0;
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}
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}
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int autoscan_notify_scan(struct wpa_supplicant *wpa_s,
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struct wpa_scan_results *scan_res)
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{
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int interval;
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if (wpa_s->autoscan && wpa_s->autoscan_priv) {
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interval = wpa_s->autoscan->notify_scan(wpa_s->autoscan_priv,
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scan_res);
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if (interval <= 0)
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return -1;
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wpa_s->scan_interval = interval;
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wpa_s->sched_scan_plans[0].interval = interval;
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request_scan(wpa_s);
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}
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return 0;
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}
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