batman-adv: add generic netlink family for batman-adv (09748a22) · Commits · 戴 / test

MAINTAINERS

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		@@ -2291,6 +2291,7 @@ S: Maintained
		F: Documentation/ABI/testing/sysfs-class-net-batman-adv
		F: Documentation/ABI/testing/sysfs-class-net-mesh
		F: Documentation/networking/batman-adv.txt
		F: include/uapi/linux/batman_adv.h
		F: net/batman-adv/

		BAYCOM/HDLCDRV DRIVERS FOR AX.25

include/uapi/linux/batman_adv.h

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		/* Copyright (C) 2016 B.A.T.M.A.N. contributors:
		*
		* Matthias Schiffer
		*
		* Permission to use, copy, modify, and/or distribute this software for any
		* purpose with or without fee is hereby granted, provided that the above
		* copyright notice and this permission notice appear in all copies.
		*
		* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
		* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
		* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
		* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
		* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
		* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
		* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
		*/

		#ifndef _UAPI_LINUX_BATMAN_ADV_H_
		#define _UAPI_LINUX_BATMAN_ADV_H_

		#define BATADV_NL_NAME "batadv"

		/**
		* enum batadv_nl_attrs - batman-adv netlink attributes
		*
		* @BATADV_ATTR_UNSPEC: unspecified attribute to catch errors
		* @__BATADV_ATTR_AFTER_LAST: internal use
		* @NUM_BATADV_ATTR: total number of batadv_nl_attrs available
		* @BATADV_ATTR_MAX: highest attribute number currently defined
		*/
		enum batadv_nl_attrs {
		BATADV_ATTR_UNSPEC,
		/* add attributes above here, update the policy in netlink.c */
		__BATADV_ATTR_AFTER_LAST,
		NUM_BATADV_ATTR = __BATADV_ATTR_AFTER_LAST,
		BATADV_ATTR_MAX = __BATADV_ATTR_AFTER_LAST - 1
		};

		/**
		* enum batadv_nl_commands - supported batman-adv netlink commands
		*
		* @BATADV_CMD_UNSPEC: unspecified command to catch errors
		* @__BATADV_CMD_AFTER_LAST: internal use
		* @BATADV_CMD_MAX: highest used command number
		*/
		enum batadv_nl_commands {
		BATADV_CMD_UNSPEC,
		/* add new commands above here */
		__BATADV_CMD_AFTER_LAST,
		BATADV_CMD_MAX = __BATADV_CMD_AFTER_LAST - 1
		};

		#endif /* _UAPI_LINUX_BATMAN_ADV_H_ */

net/batman-adv/Makefile

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		@@ -35,6 +35,7 @@ batman-adv-y += icmp_socket.o
		batman-adv-$(CONFIG_BATMAN_ADV_DEBUG) += log.o
		batman-adv-y += main.o
		batman-adv-$(CONFIG_BATMAN_ADV_MCAST) += multicast.o
		batman-adv-y += netlink.o
		batman-adv-$(CONFIG_BATMAN_ADV_NC) += network-coding.o
		batman-adv-y += originator.o
		batman-adv-y += routing.o

net/batman-adv/main.c

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		@@ -57,6 +57,7 @@
		#include "icmp_socket.h"
		#include "log.h"
		#include "multicast.h"
		#include "netlink.h"
		#include "network-coding.h"
		#include "originator.h"
		#include "packet.h"
		@@ -99,6 +100,7 @@ static int __init batadv_init(void)

		register_netdevice_notifier(&batadv_hard_if_notifier);
		rtnl_link_register(&batadv_link_ops);
		batadv_netlink_register();

		pr_info("B.A.T.M.A.N. advanced %s (compatibility version %i) loaded\n",
		BATADV_SOURCE_VERSION, BATADV_COMPAT_VERSION);
		@@ -109,6 +111,7 @@ static int __init batadv_init(void)
		static void __exit batadv_exit(void)
		{
		batadv_debugfs_destroy();
		batadv_netlink_unregister();
		rtnl_link_unregister(&batadv_link_ops);
		unregister_netdevice_notifier(&batadv_hard_if_notifier);
		batadv_hardif_remove_interfaces();

net/batman-adv/netlink.c

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		/* Copyright (C) 2016 B.A.T.M.A.N. contributors:
		*
		* Matthias Schiffer
		*
		* This program is free software; you can redistribute it and/or
		* modify it under the terms of version 2 of the GNU General Public
		* License as published by the Free Software Foundation.
		*
		* 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.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, see <http://www.gnu.org/licenses/>.
		*/

		#include "netlink.h"
		#include "main.h"

		#include <linux/genetlink.h>
		#include <linux/init.h>
		#include <linux/printk.h>
		#include <net/genetlink.h>
		#include <uapi/linux/batman_adv.h>

		static struct genl_family batadv_netlink_family = {
		.id = GENL_ID_GENERATE,
		.hdrsize = 0,
		.name = BATADV_NL_NAME,
		.version = 1,
		.maxattr = BATADV_ATTR_MAX,
		};

		static struct genl_ops batadv_netlink_ops[] = {
		};

		/**
		* batadv_netlink_register - register batadv genl netlink family
		*/
		void __init batadv_netlink_register(void)
		{
		int ret;

		ret = genl_register_family_with_ops(&batadv_netlink_family,
		batadv_netlink_ops);
		if (ret)
		pr_warn("unable to register netlink family");
		}

		/**
		* batadv_netlink_unregister - unregister batadv genl netlink family
		*/
		void batadv_netlink_unregister(void)
		{
		genl_unregister_family(&batadv_netlink_family);
		}

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