From 3e53e7a4b5db20ed7096c21da85a977355866aa7 Mon Sep 17 00:00:00 2001
From: nbd <nbd@3c298f89-4303-0410-b956-a3cf2f4a3e73>
Date: Thu, 26 Mar 2009 20:56:47 +0000
Subject: add wireless measurement probe infrastructure, developed at
 Fraunhofer FOKUS

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15050 3c298f89-4303-0410-b956-a3cf2f4a3e73
---
 package/wprobe/src/kernel/wprobe-dummy.c | 96 ++++++++++++++++++++++++++++++++
 1 file changed, 96 insertions(+)
 create mode 100644 package/wprobe/src/kernel/wprobe-dummy.c

(limited to 'package/wprobe/src/kernel/wprobe-dummy.c')

diff --git a/package/wprobe/src/kernel/wprobe-dummy.c b/package/wprobe/src/kernel/wprobe-dummy.c
new file mode 100644
index 000000000..4231223e0
--- /dev/null
+++ b/package/wprobe/src/kernel/wprobe-dummy.c
@@ -0,0 +1,96 @@
+/*
+ * wprobe-core.c: Wireless probe interface dummy driver
+ * Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <linux/spinlock.h>
+#include <linux/random.h>
+#include <linux/wprobe.h>
+
+static const char local_addr[] = "\x00\x13\x37\xba\xbe\x00";
+
+enum dummy_global_values {
+	DUMMY_GLOBAL_MEDIUM_BUSY
+};
+enum dummy_link_values {
+	DUMMY_LINK_SNR
+};
+
+struct wprobe_item dummy_perlink[] = {
+	[DUMMY_LINK_SNR] = {
+		.name = "snr",
+		.type = WPROBE_VAL_U8,
+		.flags = WPROBE_F_KEEPSTAT,
+	},
+};
+
+struct wprobe_item dummy_globals[] = {
+	[DUMMY_GLOBAL_MEDIUM_BUSY] = {
+		.name = "medium_busy",
+		.type = WPROBE_VAL_U8,
+		.flags = WPROBE_F_KEEPSTAT,
+	}
+};
+
+int dummy_sync(struct wprobe_iface *dev, struct wprobe_link *l, struct wprobe_value *val, bool measure)
+{
+	u8 intval = 0;
+
+	get_random_bytes(&intval, 1);
+	if (l) {
+		WPROBE_FILL_BEGIN(val, dummy_perlink);
+		WPROBE_SET(DUMMY_LINK_SNR, U8, (intval % 40));
+		WPROBE_FILL_END();
+	} else {
+		WPROBE_FILL_BEGIN(val, dummy_globals);
+		WPROBE_SET(DUMMY_GLOBAL_MEDIUM_BUSY, U8, (intval % 100));
+		WPROBE_FILL_END();
+	}
+	return 0;
+}
+
+static struct wprobe_iface dummy_dev = {
+	.name = "dummy",
+	.addr = local_addr,
+	.link_items = dummy_perlink,
+	.n_link_items = ARRAY_SIZE(dummy_perlink),
+	.global_items = dummy_globals,
+	.n_global_items = ARRAY_SIZE(dummy_globals),
+	.sync_data = dummy_sync,
+};
+
+static struct wprobe_link dummy_link;
+
+static int __init
+wprobe_dummy_init(void)
+{
+	wprobe_add_iface(&dummy_dev);
+	wprobe_add_link(&dummy_dev, &dummy_link, "\x00\x13\x37\xda\xda\x00");
+	return 0;
+}
+
+static void __exit
+wprobe_dummy_exit(void)
+{
+	wprobe_remove_link(&dummy_dev, &dummy_link);
+	wprobe_remove_iface(&dummy_dev);
+}
+
+module_init(wprobe_dummy_init);
+module_exit(wprobe_dummy_exit);
+
+MODULE_LICENSE("GPL");
-- 
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