mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
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3e53e7a4b5
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@15050 3c298f89-4303-0410-b956-a3cf2f4a3e73
97 lines
2.3 KiB
C
97 lines
2.3 KiB
C
/*
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* wprobe-core.c: Wireless probe interface dummy driver
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* Copyright (C) 2008-2009 Felix Fietkau <nbd@openwrt.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <linux/kernel.h>
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#include <linux/version.h>
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#include <linux/module.h>
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#include <linux/types.h>
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#include <linux/spinlock.h>
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#include <linux/random.h>
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#include <linux/wprobe.h>
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static const char local_addr[] = "\x00\x13\x37\xba\xbe\x00";
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enum dummy_global_values {
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DUMMY_GLOBAL_MEDIUM_BUSY
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};
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enum dummy_link_values {
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DUMMY_LINK_SNR
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};
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struct wprobe_item dummy_perlink[] = {
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[DUMMY_LINK_SNR] = {
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.name = "snr",
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.type = WPROBE_VAL_U8,
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.flags = WPROBE_F_KEEPSTAT,
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},
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};
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struct wprobe_item dummy_globals[] = {
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[DUMMY_GLOBAL_MEDIUM_BUSY] = {
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.name = "medium_busy",
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.type = WPROBE_VAL_U8,
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.flags = WPROBE_F_KEEPSTAT,
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}
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};
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int dummy_sync(struct wprobe_iface *dev, struct wprobe_link *l, struct wprobe_value *val, bool measure)
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{
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u8 intval = 0;
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get_random_bytes(&intval, 1);
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if (l) {
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WPROBE_FILL_BEGIN(val, dummy_perlink);
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WPROBE_SET(DUMMY_LINK_SNR, U8, (intval % 40));
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WPROBE_FILL_END();
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} else {
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WPROBE_FILL_BEGIN(val, dummy_globals);
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WPROBE_SET(DUMMY_GLOBAL_MEDIUM_BUSY, U8, (intval % 100));
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WPROBE_FILL_END();
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}
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return 0;
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}
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static struct wprobe_iface dummy_dev = {
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.name = "dummy",
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.addr = local_addr,
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.link_items = dummy_perlink,
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.n_link_items = ARRAY_SIZE(dummy_perlink),
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.global_items = dummy_globals,
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.n_global_items = ARRAY_SIZE(dummy_globals),
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.sync_data = dummy_sync,
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};
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static struct wprobe_link dummy_link;
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static int __init
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wprobe_dummy_init(void)
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{
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wprobe_add_iface(&dummy_dev);
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wprobe_add_link(&dummy_dev, &dummy_link, "\x00\x13\x37\xda\xda\x00");
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return 0;
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}
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static void __exit
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wprobe_dummy_exit(void)
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{
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wprobe_remove_link(&dummy_dev, &dummy_link);
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wprobe_remove_iface(&dummy_dev);
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}
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module_init(wprobe_dummy_init);
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module_exit(wprobe_dummy_exit);
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MODULE_LICENSE("GPL");
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