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/*
* fastd.c - driver for the "Fast and Secure Tunneling Daemon"
*
* Copyright (c) 2012-2013, Matthias Schiffer <mschiffer@universe-factory.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Alternatively, provided that this notice is retained in full, this
* software may be distributed under the terms of the GNU General
* Public License ("GPL") version 2, in which case the provisions of the
* GPL apply INSTEAD OF those given above.
*
* The provided data structures and external interfaces from this code
* are not restricted to be used by modules with a GPL compatible license.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#define DRV_NAME "fastd"
#define DRV_VERSION "0.1"
#define DRV_DESCRIPTION "fastd tunnel driver"
#define DRV_COPYRIGHT "(C) 2013 Matthias Schiffer <mschiffer@universe-factory.net>"
#include <linux/module.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <net/genetlink.h>
#include "fastd.h"
static struct genl_family fastd_nl_family = {
.id = GENL_ID_GENERATE,
.name = DRV_NAME,
.version = 1,
.hdrsize = 0,
.maxattr = FASTD_A_MAX,
};
static int fastd_nl_event(struct notifier_block *this,
unsigned long event, void *ptr)
{
struct netlink_notify *n = ptr;
if (event != NETLINK_URELEASE || n->protocol != NETLINK_GENERIC)
return NOTIFY_DONE;
return NOTIFY_DONE;
}
static struct notifier_block nl_notifier = {
.notifier_call = fastd_nl_event,
};
static int fastd_cmd_create(struct sk_buff *skb, struct genl_info *info)
{
if (!capable(CAP_NET_ADMIN))
return -EPERM;
return -EINVAL;
}
static struct nla_policy fastd_nl_policy[__FASTD_A_MAX] = {
};
static struct genl_ops fastd_nl_ops[] = {
{
.cmd = FASTD_CMD_CREATE,
.doit = fastd_cmd_create,
.policy = fastd_nl_policy,
},
};
static int __init fastd_init(void)
{
int ret = 0;
netlink_register_notifier(&nl_notifier);
ret = genl_register_family_with_ops(&fastd_nl_family, fastd_nl_ops, ARRAY_SIZE(fastd_nl_ops));
if (ret)
goto unregister_notifier;
pr_info("%s %s\n", DRV_DESCRIPTION, DRV_VERSION);
return 0;
unregister_notifier:
netlink_unregister_notifier(&nl_notifier);
return ret;
}
static void fastd_cleanup(void)
{
genl_unregister_family(&fastd_nl_family);
netlink_unregister_notifier(&nl_notifier);
}
module_init(fastd_init);
module_exit(fastd_cleanup);
MODULE_DESCRIPTION(DRV_DESCRIPTION);
MODULE_AUTHOR(DRV_COPYRIGHT);
MODULE_LICENSE("Dual BSD/GPL");
MODULE_ALIAS_GENL_FAMILY("fastd");
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