From patchwork Thu May  3 13:16:56 2012
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Subject: [7/7] Adding a simple periodic autoscan module
Date: Thu, 03 May 2012 03:16:56 -0000
From: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
X-Patchwork-Id: 156698
Message-Id: <1336051016-15005-8-git-send-email-tomasz.bursztyka@linux.intel.com>
To: hostap@lists.shmoo.com

This module will sets a fixed scanning interval.
Thus, the parameter to this module is following this format: <fixed interval>

Signed-hostap: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>

---
wpa_supplicant/Makefile            |    6 +++
 wpa_supplicant/autoscan.c          |    7 +++
 wpa_supplicant/autoscan_periodic.c |   74 ++++++++++++++++++++++++++++++++++++
 3 files changed, 87 insertions(+), 0 deletions(-)
 create mode 100644 wpa_supplicant/autoscan_periodic.c

diff --git a/wpa_supplicant/Makefile b/wpa_supplicant/Makefile
index 859db6b..3ebf111 100644
--- a/wpa_supplicant/Makefile
+++ b/wpa_supplicant/Makefile
@@ -1317,6 +1317,12 @@ OBJS += autoscan_exponential.o
 NEED_AUTOSCAN=y
 endif
 
+ifdef CONFIG_AUTOSCAN_PERIODIC
+CFLAGS += -DCONFIG_AUTOSCAN_PERIODIC
+OBJS += autoscan_periodic.o
+NEED_AUTOSCAN=y
+endif
+
 ifdef NEED_AUTOSCAN
 CFLAGS += -DCONFIG_AUTOSCAN
 OBJS += autoscan.o
diff --git a/wpa_supplicant/autoscan.c b/wpa_supplicant/autoscan.c
index d2645bc..98e032c 100644
--- a/wpa_supplicant/autoscan.c
+++ b/wpa_supplicant/autoscan.c
@@ -24,10 +24,17 @@
 extern const struct autoscan_ops autoscan_exponential_ops;
 #endif /* CONFIG_AUTOSCAN_EXPONENTIAL */
 
+#ifdef CONFIG_AUTOSCAN_PERIODIC
+extern const struct autoscan_ops autoscan_periodic_ops;
+#endif /* CONFIG_AUTOSCAN_PERIODIC */
+
 static const struct autoscan_ops * autoscan_modules[] = {
 #ifdef CONFIG_AUTOSCAN_EXPONENTIAL
 	&autoscan_exponential_ops,
 #endif /* CONFIG_AUTOSCAN_EXPONENTIAL */
+#ifdef CONFIG_AUTOSCAN_PERIODIC
+	&autoscan_periodic_ops,
+#endif /* CONFIG_AUTOSCAN_PERIODIC */
 	NULL
 };
 
diff --git a/wpa_supplicant/autoscan_periodic.c b/wpa_supplicant/autoscan_periodic.c
new file mode 100644
index 0000000..15fb855
--- /dev/null
+++ b/wpa_supplicant/autoscan_periodic.c
@@ -0,0 +1,74 @@
+/*
+ * WPA Supplicant - auto scan periodic module
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include "includes.h"
+
+#include "common.h"
+#include "wpa_supplicant_i.h"
+#include "autoscan.h"
+
+
+static int periodic_interval = 0;
+
+static int autoscan_periodic_get_params(const char *params)
+{
+	int interval;
+
+	if (params == NULL)
+		return -1;
+
+	interval = atoi(params);
+
+	if (interval < 0)
+		return -1;
+
+	periodic_interval = interval;
+
+	return 0;
+}
+
+
+static void * autoscan_periodic_init(struct wpa_supplicant *wpa_s,
+				     const char *params)
+{
+	if (autoscan_periodic_get_params(params) < 0)
+		return NULL;
+
+	wpa_printf(MSG_DEBUG, "autoscan periodic: interval is %d",
+		   periodic_interval);
+
+	return &periodic_interval;
+}
+
+
+static void autoscan_periodic_deinit(void *priv)
+{
+	periodic_interval = 0;
+}
+
+
+static int autoscan_periodic_notify_scan(void *priv,
+					 struct wpa_scan_results *scan_res)
+{
+	wpa_printf(MSG_DEBUG, "autoscan periodic: scan result notification");
+
+	return periodic_interval;
+}
+
+
+const struct autoscan_ops autoscan_periodic_ops = {
+	.name = "periodic",
+	.init = autoscan_periodic_init,
+	.deinit = autoscan_periodic_deinit,
+	.notify_scan = autoscan_periodic_notify_scan,
+};