[linux-2.6-block.git] / net / batman-adv / netlink.c

// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) 2016-2018  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/atomic.h>
#include <linux/byteorder/generic.h>
#include <linux/cache.h>
#include <linux/errno.h>
#include <linux/export.h>
#include <linux/genetlink.h>
#include <linux/gfp.h>
#include <linux/if_ether.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/netlink.h>
#include <linux/printk.h>
#include <linux/rculist.h>
#include <linux/rcupdate.h>
#include <linux/skbuff.h>
#include <linux/stddef.h>
#include <linux/types.h>
#include <net/genetlink.h>
#include <net/netlink.h>
#include <net/sock.h>
#include <uapi/linux/batadv_packet.h>
#include <uapi/linux/batman_adv.h>

#include "bat_algo.h"
#include "bridge_loop_avoidance.h"
#include "distributed-arp-table.h"
#include "gateway_client.h"
#include "hard-interface.h"
#include "multicast.h"
#include "originator.h"
#include "soft-interface.h"
#include "tp_meter.h"
#include "translation-table.h"

struct genl_family batadv_netlink_family;

/* multicast groups */
enum batadv_netlink_multicast_groups {
	BATADV_NL_MCGRP_TPMETER,
};

static const struct genl_multicast_group batadv_netlink_mcgrps[] = {
	[BATADV_NL_MCGRP_TPMETER] = { .name = BATADV_NL_MCAST_GROUP_TPMETER },
};

static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
	[BATADV_ATTR_VERSION]			= { .type = NLA_STRING },
	[BATADV_ATTR_ALGO_NAME]			= { .type = NLA_STRING },
	[BATADV_ATTR_MESH_IFINDEX]		= { .type = NLA_U32 },
	[BATADV_ATTR_MESH_IFNAME]		= { .type = NLA_STRING },
	[BATADV_ATTR_MESH_ADDRESS]		= { .len = ETH_ALEN },
	[BATADV_ATTR_HARD_IFINDEX]		= { .type = NLA_U32 },
	[BATADV_ATTR_HARD_IFNAME]		= { .type = NLA_STRING },
	[BATADV_ATTR_HARD_ADDRESS]		= { .len = ETH_ALEN },
	[BATADV_ATTR_ORIG_ADDRESS]		= { .len = ETH_ALEN },
	[BATADV_ATTR_TPMETER_RESULT]		= { .type = NLA_U8 },
	[BATADV_ATTR_TPMETER_TEST_TIME]		= { .type = NLA_U32 },
	[BATADV_ATTR_TPMETER_BYTES]		= { .type = NLA_U64 },
	[BATADV_ATTR_TPMETER_COOKIE]		= { .type = NLA_U32 },
	[BATADV_ATTR_ACTIVE]			= { .type = NLA_FLAG },
	[BATADV_ATTR_TT_ADDRESS]		= { .len = ETH_ALEN },
	[BATADV_ATTR_TT_TTVN]			= { .type = NLA_U8 },
	[BATADV_ATTR_TT_LAST_TTVN]		= { .type = NLA_U8 },
	[BATADV_ATTR_TT_CRC32]			= { .type = NLA_U32 },
	[BATADV_ATTR_TT_VID]			= { .type = NLA_U16 },
	[BATADV_ATTR_TT_FLAGS]			= { .type = NLA_U32 },
	[BATADV_ATTR_FLAG_BEST]			= { .type = NLA_FLAG },
	[BATADV_ATTR_LAST_SEEN_MSECS]		= { .type = NLA_U32 },
	[BATADV_ATTR_NEIGH_ADDRESS]		= { .len = ETH_ALEN },
	[BATADV_ATTR_TQ]			= { .type = NLA_U8 },
	[BATADV_ATTR_THROUGHPUT]		= { .type = NLA_U32 },
	[BATADV_ATTR_BANDWIDTH_UP]		= { .type = NLA_U32 },
	[BATADV_ATTR_BANDWIDTH_DOWN]		= { .type = NLA_U32 },
	[BATADV_ATTR_ROUTER]			= { .len = ETH_ALEN },
	[BATADV_ATTR_BLA_OWN]			= { .type = NLA_FLAG },
	[BATADV_ATTR_BLA_ADDRESS]		= { .len = ETH_ALEN },
	[BATADV_ATTR_BLA_VID]			= { .type = NLA_U16 },
	[BATADV_ATTR_BLA_BACKBONE]		= { .len = ETH_ALEN },
	[BATADV_ATTR_BLA_CRC]			= { .type = NLA_U16 },
	[BATADV_ATTR_DAT_CACHE_IP4ADDRESS]	= { .type = NLA_U32 },
	[BATADV_ATTR_DAT_CACHE_HWADDRESS]	= { .len = ETH_ALEN },
	[BATADV_ATTR_DAT_CACHE_VID]		= { .type = NLA_U16 },
	[BATADV_ATTR_MCAST_FLAGS]		= { .type = NLA_U32 },
	[BATADV_ATTR_MCAST_FLAGS_PRIV]		= { .type = NLA_U32 },
};

/**
 * batadv_netlink_get_ifindex() - Extract an interface index from a message
 * @nlh: Message header
 * @attrtype: Attribute which holds an interface index
 *
 * Return: interface index, or 0.
 */
int
batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype)
{
	struct nlattr *attr = nlmsg_find_attr(nlh, GENL_HDRLEN, attrtype);

	return attr ? nla_get_u32(attr) : 0;
}

/**
 * batadv_netlink_mesh_info_put() - fill in generic information about mesh
 *  interface
 * @msg: netlink message to be sent back
 * @soft_iface: interface for which the data should be taken
 *
 * Return: 0 on success, < 0 on error
 */
static int
batadv_netlink_mesh_info_put(struct sk_buff *msg, struct net_device *soft_iface)
{
	struct batadv_priv *bat_priv = netdev_priv(soft_iface);
	struct batadv_hard_iface *primary_if = NULL;
	struct net_device *hard_iface;
	int ret = -ENOBUFS;

	if (nla_put_string(msg, BATADV_ATTR_VERSION, BATADV_SOURCE_VERSION) ||
	    nla_put_string(msg, BATADV_ATTR_ALGO_NAME,
			   bat_priv->algo_ops->name) ||
	    nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, soft_iface->ifindex) ||
	    nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, soft_iface->name) ||
	    nla_put(msg, BATADV_ATTR_MESH_ADDRESS, ETH_ALEN,
		    soft_iface->dev_addr) ||
	    nla_put_u8(msg, BATADV_ATTR_TT_TTVN,
		       (u8)atomic_read(&bat_priv->tt.vn)))
		goto out;

#ifdef CONFIG_BATMAN_ADV_BLA
	if (nla_put_u16(msg, BATADV_ATTR_BLA_CRC,
			ntohs(bat_priv->bla.claim_dest.group)))
		goto out;
#endif

	if (batadv_mcast_mesh_info_put(msg, bat_priv))
		goto out;

	primary_if = batadv_primary_if_get_selected(bat_priv);
	if (primary_if && primary_if->if_status == BATADV_IF_ACTIVE) {
		hard_iface = primary_if->net_dev;

		if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
				hard_iface->ifindex) ||
		    nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
				   hard_iface->name) ||
		    nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
			    hard_iface->dev_addr))
			goto out;
	}

	ret = 0;

 out:
	if (primary_if)
		batadv_hardif_put(primary_if);

	return ret;
}

/**
 * batadv_netlink_get_mesh_info() - handle incoming BATADV_CMD_GET_MESH_INFO
 *  netlink request
 * @skb: received netlink message
 * @info: receiver information
 *
 * Return: 0 on success, < 0 on error
 */
static int
batadv_netlink_get_mesh_info(struct sk_buff *skb, struct genl_info *info)
{
	struct net *net = genl_info_net(info);
	struct net_device *soft_iface;
	struct sk_buff *msg = NULL;
	void *msg_head;
	int ifindex;
	int ret;

	if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
		return -EINVAL;

	ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
	if (!ifindex)
		return -EINVAL;

	soft_iface = dev_get_by_index(net, ifindex);
	if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
		ret = -ENODEV;
		goto out;
	}

	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!msg) {
		ret = -ENOMEM;
		goto out;
	}

	msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
			       &batadv_netlink_family, 0,
			       BATADV_CMD_GET_MESH_INFO);
	if (!msg_head) {
		ret = -ENOBUFS;
		goto out;
	}

	ret = batadv_netlink_mesh_info_put(msg, soft_iface);

 out:
	if (soft_iface)
		dev_put(soft_iface);

	if (ret) {
		if (msg)
			nlmsg_free(msg);
		return ret;
	}

	genlmsg_end(msg, msg_head);
	return genlmsg_reply(msg, info);
}

/**
 * batadv_netlink_tp_meter_put() - Fill information of started tp_meter session
 * @msg: netlink message to be sent back
 * @cookie: tp meter session cookie
 *
 *  Return: 0 on success, < 0 on error
 */
static int
batadv_netlink_tp_meter_put(struct sk_buff *msg, u32 cookie)
{
	if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
		return -ENOBUFS;

	return 0;
}

/**
 * batadv_netlink_tpmeter_notify() - send tp_meter result via netlink to client
 * @bat_priv: the bat priv with all the soft interface information
 * @dst: destination of tp_meter session
 * @result: reason for tp meter session stop
 * @test_time: total time ot the tp_meter session
 * @total_bytes: bytes acked to the receiver
 * @cookie: cookie of tp_meter session
 *
 * Return: 0 on success, < 0 on error
 */
int batadv_netlink_tpmeter_notify(struct batadv_priv *bat_priv, const u8 *dst,
				  u8 result, u32 test_time, u64 total_bytes,
				  u32 cookie)
{
	struct sk_buff *msg;
	void *hdr;
	int ret;

	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!msg)
		return -ENOMEM;

	hdr = genlmsg_put(msg, 0, 0, &batadv_netlink_family, 0,
			  BATADV_CMD_TP_METER);
	if (!hdr) {
		ret = -ENOBUFS;
		goto err_genlmsg;
	}

	if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
		goto nla_put_failure;

	if (nla_put_u32(msg, BATADV_ATTR_TPMETER_TEST_TIME, test_time))
		goto nla_put_failure;

	if (nla_put_u64_64bit(msg, BATADV_ATTR_TPMETER_BYTES, total_bytes,
			      BATADV_ATTR_PAD))
		goto nla_put_failure;

	if (nla_put_u8(msg, BATADV_ATTR_TPMETER_RESULT, result))
		goto nla_put_failure;

	if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN, dst))
		goto nla_put_failure;

	genlmsg_end(msg, hdr);

	genlmsg_multicast_netns(&batadv_netlink_family,
				dev_net(bat_priv->soft_iface), msg, 0,
				BATADV_NL_MCGRP_TPMETER, GFP_KERNEL);

	return 0;

nla_put_failure:
	genlmsg_cancel(msg, hdr);
	ret = -EMSGSIZE;

err_genlmsg:
	nlmsg_free(msg);
	return ret;
}

/**
 * batadv_netlink_tp_meter_start() - Start a new tp_meter session
 * @skb: received netlink message
 * @info: receiver information
 *
 * Return: 0 on success, < 0 on error
 */
static int
batadv_netlink_tp_meter_start(struct sk_buff *skb, struct genl_info *info)
{
	struct net *net = genl_info_net(info);
	struct net_device *soft_iface;
	struct batadv_priv *bat_priv;
	struct sk_buff *msg = NULL;
	u32 test_length;
	void *msg_head;
	int ifindex;
	u32 cookie;
	u8 *dst;
	int ret;

	if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
		return -EINVAL;

	if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
		return -EINVAL;

	if (!info->attrs[BATADV_ATTR_TPMETER_TEST_TIME])
		return -EINVAL;

	ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
	if (!ifindex)
		return -EINVAL;

	dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);

	test_length = nla_get_u32(info->attrs[BATADV_ATTR_TPMETER_TEST_TIME]);

	soft_iface = dev_get_by_index(net, ifindex);
	if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
		ret = -ENODEV;
		goto out;
	}

	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	if (!msg) {
		ret = -ENOMEM;
		goto out;
	}

	msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
			       &batadv_netlink_family, 0,
			       BATADV_CMD_TP_METER);
	if (!msg_head) {
		ret = -ENOBUFS;
		goto out;
	}

	bat_priv = netdev_priv(soft_iface);
	batadv_tp_start(bat_priv, dst, test_length, &cookie);

	ret = batadv_netlink_tp_meter_put(msg, cookie);

 out:
	if (soft_iface)
		dev_put(soft_iface);

	if (ret) {
		if (msg)
			nlmsg_free(msg);
		return ret;
	}

	genlmsg_end(msg, msg_head);
	return genlmsg_reply(msg, info);
}

/**
 * batadv_netlink_tp_meter_start() - Cancel a running tp_meter session
 * @skb: received netlink message
 * @info: receiver information
 *
 * Return: 0 on success, < 0 on error
 */
static int
batadv_netlink_tp_meter_cancel(struct sk_buff *skb, struct genl_info *info)
{
	struct net *net = genl_info_net(info);
	struct net_device *soft_iface;
	struct batadv_priv *bat_priv;
	int ifindex;
	u8 *dst;
	int ret = 0;

	if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
		return -EINVAL;

	if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
		return -EINVAL;

	ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
	if (!ifindex)
		return -EINVAL;

	dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);

	soft_iface = dev_get_by_index(net, ifindex);
	if (!soft_iface || !batadv_softif_is_valid(soft_iface)) {
		ret = -ENODEV;
		goto out;
	}

	bat_priv = netdev_priv(soft_iface);
	batadv_tp_stop(bat_priv, dst, BATADV_TP_REASON_CANCEL);

out:
	if (soft_iface)
		dev_put(soft_iface);

	return ret;
}

/**
 * batadv_netlink_dump_hardif_entry() - Dump one hard interface into a message
 * @msg: Netlink message to dump into
 * @portid: Port making netlink request
 * @seq: Sequence number of netlink message
 * @hard_iface: Hard interface to dump
 *
 * Return: error code, or 0 on success
 */
static int
batadv_netlink_dump_hardif_entry(struct sk_buff *msg, u32 portid, u32 seq,
				 struct batadv_hard_iface *hard_iface)
{
	struct net_device *net_dev = hard_iface->net_dev;
	void *hdr;

	hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
			  BATADV_CMD_GET_HARDIFS);
	if (!hdr)
		return -EMSGSIZE;

	if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
			net_dev->ifindex) ||
	    nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
			   net_dev->name) ||
	    nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
		    net_dev->dev_addr))
		goto nla_put_failure;

	if (hard_iface->if_status == BATADV_IF_ACTIVE) {
		if (nla_put_flag(msg, BATADV_ATTR_ACTIVE))
			goto nla_put_failure;
	}

	genlmsg_end(msg, hdr);
	return 0;

 nla_put_failure:
	genlmsg_cancel(msg, hdr);
	return -EMSGSIZE;
}

/**
 * batadv_netlink_dump_hardifs() - Dump all hard interface into a messages
 * @msg: Netlink message to dump into
 * @cb: Parameters from query
 *
 * Return: error code, or length of reply message on success
 */
static int
batadv_netlink_dump_hardifs(struct sk_buff *msg, struct netlink_callback *cb)
{
	struct net *net = sock_net(cb->skb->sk);
	struct net_device *soft_iface;
	struct batadv_hard_iface *hard_iface;
	int ifindex;
	int portid = NETLINK_CB(cb->skb).portid;
	int seq = cb->nlh->nlmsg_seq;
	int skip = cb->args[0];
	int i = 0;

	ifindex = batadv_netlink_get_ifindex(cb->nlh,
					     BATADV_ATTR_MESH_IFINDEX);
	if (!ifindex)
		return -EINVAL;

	soft_iface = dev_get_by_index(net, ifindex);
	if (!soft_iface)
		return -ENODEV;

	if (!batadv_softif_is_valid(soft_iface)) {
		dev_put(soft_iface);
		return -ENODEV;
	}

	rcu_read_lock();

	list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
		if (hard_iface->soft_iface != soft_iface)
			continue;

		if (i++ < skip)
			continue;

		if (batadv_netlink_dump_hardif_entry(msg, portid, seq,
						     hard_iface)) {
			i--;
			break;
		}
	}

	rcu_read_unlock();

	dev_put(soft_iface);

	cb->args[0] = i;

	return msg->len;
}

static const struct genl_ops batadv_netlink_ops[] = {
	{
		.cmd = BATADV_CMD_GET_MESH_INFO,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.doit = batadv_netlink_get_mesh_info,
	},
	{
		.cmd = BATADV_CMD_TP_METER,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.doit = batadv_netlink_tp_meter_start,
	},
	{
		.cmd = BATADV_CMD_TP_METER_CANCEL,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.doit = batadv_netlink_tp_meter_cancel,
	},
	{
		.cmd = BATADV_CMD_GET_ROUTING_ALGOS,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.dumpit = batadv_algo_dump,
	},
	{
		.cmd = BATADV_CMD_GET_HARDIFS,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.dumpit = batadv_netlink_dump_hardifs,
	},
	{
		.cmd = BATADV_CMD_GET_TRANSTABLE_LOCAL,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.dumpit = batadv_tt_local_dump,
	},
	{
		.cmd = BATADV_CMD_GET_TRANSTABLE_GLOBAL,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.dumpit = batadv_tt_global_dump,
	},
	{
		.cmd = BATADV_CMD_GET_ORIGINATORS,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.dumpit = batadv_orig_dump,
	},
	{
		.cmd = BATADV_CMD_GET_NEIGHBORS,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.dumpit = batadv_hardif_neigh_dump,
	},
	{
		.cmd = BATADV_CMD_GET_GATEWAYS,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.dumpit = batadv_gw_dump,
	},
	{
		.cmd = BATADV_CMD_GET_BLA_CLAIM,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.dumpit = batadv_bla_claim_dump,
	},
	{
		.cmd = BATADV_CMD_GET_BLA_BACKBONE,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.dumpit = batadv_bla_backbone_dump,
	},
	{
		.cmd = BATADV_CMD_GET_DAT_CACHE,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.dumpit = batadv_dat_cache_dump,
	},
	{
		.cmd = BATADV_CMD_GET_MCAST_FLAGS,
		.flags = GENL_ADMIN_PERM,
		.policy = batadv_netlink_policy,
		.dumpit = batadv_mcast_flags_dump,
	},

};

struct genl_family batadv_netlink_family __ro_after_init = {
	.hdrsize = 0,
	.name = BATADV_NL_NAME,
	.version = 1,
	.maxattr = BATADV_ATTR_MAX,
	.netnsok = true,
	.module = THIS_MODULE,
	.ops = batadv_netlink_ops,
	.n_ops = ARRAY_SIZE(batadv_netlink_ops),
	.mcgrps = batadv_netlink_mcgrps,
	.n_mcgrps = ARRAY_SIZE(batadv_netlink_mcgrps),
};

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

	ret = genl_register_family(&batadv_netlink_family);
	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);
}
Commit	Line	Data
7db7d9f3	1	// SPDX-License-Identifier: GPL-2.0
6b1aea8c	2	/* Copyright (C) 2016-2018 B.A.T.M.A.N. contributors:
09748a22 MS	3	*
	4	* Matthias Schiffer
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of version 2 of the GNU General Public
	8	* License as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, see <http://www.gnu.org/licenses/>.
	17	*/
	18
	19	#include "netlink.h"
	20	#include "main.h"
	21
f32ed4b5	22	#include <linux/atomic.h>
8dad6f0d	23	#include <linux/byteorder/generic.h>
9bcb94c8	24	#include <linux/cache.h>
5da0aef5	25	#include <linux/errno.h>
9bcb94c8	26	#include <linux/export.h>
09748a22	27	#include <linux/genetlink.h>
b92b94ac	28	#include <linux/gfp.h>
5da0aef5	29	#include <linux/if_ether.h>
09748a22	30	#include <linux/init.h>
9bcb94c8	31	#include <linux/kernel.h>
5da0aef5 MS	32	#include <linux/netdevice.h>
5da0aef5 MS	33	#include <linux/netlink.h>
09748a22	34	#include <linux/printk.h>
b60620cf MS	35	#include <linux/rculist.h>
	36	#include <linux/rcupdate.h>
	37	#include <linux/skbuff.h>
5da0aef5	38	#include <linux/stddef.h>
33a3bb4a	39	#include <linux/types.h>
09748a22	40	#include <net/genetlink.h>
5da0aef5	41	#include <net/netlink.h>
b60620cf	42	#include <net/sock.h>
fec149f5	43	#include <uapi/linux/batadv_packet.h>
09748a22 MS	44	#include <uapi/linux/batman_adv.h>
09748a22 MS	45
07a3061e	46	#include "bat_algo.h"
04f3f5bf	47	#include "bridge_loop_avoidance.h"
41aeefcc	48	#include "distributed-arp-table.h"
d7129daf	49	#include "gateway_client.h"
5da0aef5	50	#include "hard-interface.h"
53dd9a68	51	#include "multicast.h"
85cf8c85	52	#include "originator.h"
5da0aef5	53	#include "soft-interface.h"
33a3bb4a	54	#include "tp_meter.h"
d34f0550	55	#include "translation-table.h"
5da0aef5	56
489111e5	57	struct genl_family batadv_netlink_family;
09748a22	58
33a3bb4a AQ	59	/* multicast groups */
	60	enum batadv_netlink_multicast_groups {
	61	BATADV_NL_MCGRP_TPMETER,
	62	};
	63
deeb91f5	64	static const struct genl_multicast_group batadv_netlink_mcgrps[] = {
33a3bb4a AQ	65	[BATADV_NL_MCGRP_TPMETER] = { .name = BATADV_NL_MCAST_GROUP_TPMETER },
	66	};
	67
deeb91f5	68	static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
41aeefcc LL	69	[BATADV_ATTR_VERSION] = { .type = NLA_STRING },
	70	[BATADV_ATTR_ALGO_NAME] = { .type = NLA_STRING },
	71	[BATADV_ATTR_MESH_IFINDEX] = { .type = NLA_U32 },
	72	[BATADV_ATTR_MESH_IFNAME] = { .type = NLA_STRING },
	73	[BATADV_ATTR_MESH_ADDRESS] = { .len = ETH_ALEN },
	74	[BATADV_ATTR_HARD_IFINDEX] = { .type = NLA_U32 },
	75	[BATADV_ATTR_HARD_IFNAME] = { .type = NLA_STRING },
	76	[BATADV_ATTR_HARD_ADDRESS] = { .len = ETH_ALEN },
	77	[BATADV_ATTR_ORIG_ADDRESS] = { .len = ETH_ALEN },
	78	[BATADV_ATTR_TPMETER_RESULT] = { .type = NLA_U8 },
	79	[BATADV_ATTR_TPMETER_TEST_TIME] = { .type = NLA_U32 },
	80	[BATADV_ATTR_TPMETER_BYTES] = { .type = NLA_U64 },
	81	[BATADV_ATTR_TPMETER_COOKIE] = { .type = NLA_U32 },
	82	[BATADV_ATTR_ACTIVE] = { .type = NLA_FLAG },
	83	[BATADV_ATTR_TT_ADDRESS] = { .len = ETH_ALEN },
	84	[BATADV_ATTR_TT_TTVN] = { .type = NLA_U8 },
	85	[BATADV_ATTR_TT_LAST_TTVN] = { .type = NLA_U8 },
	86	[BATADV_ATTR_TT_CRC32] = { .type = NLA_U32 },
	87	[BATADV_ATTR_TT_VID] = { .type = NLA_U16 },
	88	[BATADV_ATTR_TT_FLAGS] = { .type = NLA_U32 },
	89	[BATADV_ATTR_FLAG_BEST] = { .type = NLA_FLAG },
	90	[BATADV_ATTR_LAST_SEEN_MSECS] = { .type = NLA_U32 },
	91	[BATADV_ATTR_NEIGH_ADDRESS] = { .len = ETH_ALEN },
	92	[BATADV_ATTR_TQ] = { .type = NLA_U8 },
	93	[BATADV_ATTR_THROUGHPUT] = { .type = NLA_U32 },
	94	[BATADV_ATTR_BANDWIDTH_UP] = { .type = NLA_U32 },
	95	[BATADV_ATTR_BANDWIDTH_DOWN] = { .type = NLA_U32 },
	96	[BATADV_ATTR_ROUTER] = { .len = ETH_ALEN },
	97	[BATADV_ATTR_BLA_OWN] = { .type = NLA_FLAG },
	98	[BATADV_ATTR_BLA_ADDRESS] = { .len = ETH_ALEN },
	99	[BATADV_ATTR_BLA_VID] = { .type = NLA_U16 },
	100	[BATADV_ATTR_BLA_BACKBONE] = { .len = ETH_ALEN },
	101	[BATADV_ATTR_BLA_CRC] = { .type = NLA_U16 },
	102	[BATADV_ATTR_DAT_CACHE_IP4ADDRESS] = { .type = NLA_U32 },
	103	[BATADV_ATTR_DAT_CACHE_HWADDRESS] = { .len = ETH_ALEN },
	104	[BATADV_ATTR_DAT_CACHE_VID] = { .type = NLA_U16 },
53dd9a68 LL	105	[BATADV_ATTR_MCAST_FLAGS] = { .type = NLA_U32 },
53dd9a68 LL	106	[BATADV_ATTR_MCAST_FLAGS_PRIV] = { .type = NLA_U32 },
5da0aef5 MS	107	};
5da0aef5 MS	108
b60620cf	109	/**
7e9a8c2c	110	* batadv_netlink_get_ifindex() - Extract an interface index from a message
b60620cf MS	111	* @nlh: Message header
	112	* @attrtype: Attribute which holds an interface index
	113	*
	114	* Return: interface index, or 0.
	115	*/
d34f0550	116	int
b60620cf MS	117	batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype)
	118	{
	119	struct nlattr *attr = nlmsg_find_attr(nlh, GENL_HDRLEN, attrtype);
	120
	121	return attr ? nla_get_u32(attr) : 0;
	122	}
	123
5da0aef5	124	/**
7e9a8c2c	125	* batadv_netlink_mesh_info_put() - fill in generic information about mesh
5da0aef5 MS	126	* interface
	127	* @msg: netlink message to be sent back
	128	* @soft_iface: interface for which the data should be taken
	129	*
	130	* Return: 0 on success, < 0 on error
	131	*/
	132	static int
	133	batadv_netlink_mesh_info_put(struct sk_buff msg, struct net_device soft_iface)
	134	{
	135	struct batadv_priv *bat_priv = netdev_priv(soft_iface);
	136	struct batadv_hard_iface *primary_if = NULL;
	137	struct net_device *hard_iface;
	138	int ret = -ENOBUFS;
	139
	140	if (nla_put_string(msg, BATADV_ATTR_VERSION, BATADV_SOURCE_VERSION) \|\|
	141	nla_put_string(msg, BATADV_ATTR_ALGO_NAME,
29824a55	142	bat_priv->algo_ops->name) \|\|
5da0aef5 MS	143	nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, soft_iface->ifindex) \|\|
	144	nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, soft_iface->name) \|\|
	145	nla_put(msg, BATADV_ATTR_MESH_ADDRESS, ETH_ALEN,
f32ed4b5 SE	146	soft_iface->dev_addr) \|\|
	147	nla_put_u8(msg, BATADV_ATTR_TT_TTVN,
	148	(u8)atomic_read(&bat_priv->tt.vn)))
5da0aef5 MS	149	goto out;
5da0aef5 MS	150
8dad6f0d SE	151	#ifdef CONFIG_BATMAN_ADV_BLA
	152	if (nla_put_u16(msg, BATADV_ATTR_BLA_CRC,
	153	ntohs(bat_priv->bla.claim_dest.group)))
	154	goto out;
	155	#endif
	156
53dd9a68 LL	157	if (batadv_mcast_mesh_info_put(msg, bat_priv))
	158	goto out;
	159
5da0aef5 MS	160	primary_if = batadv_primary_if_get_selected(bat_priv);
	161	if (primary_if && primary_if->if_status == BATADV_IF_ACTIVE) {
	162	hard_iface = primary_if->net_dev;
	163
	164	if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
	165	hard_iface->ifindex) \|\|
	166	nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
	167	hard_iface->name) \|\|
	168	nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
	169	hard_iface->dev_addr))
	170	goto out;
	171	}
	172
	173	ret = 0;
	174
	175	out:
	176	if (primary_if)
	177	batadv_hardif_put(primary_if);
	178
	179	return ret;
	180	}
	181
	182	/**
7e9a8c2c	183	* batadv_netlink_get_mesh_info() - handle incoming BATADV_CMD_GET_MESH_INFO
5da0aef5 MS	184	* netlink request
	185	* @skb: received netlink message
	186	* @info: receiver information
	187	*
	188	* Return: 0 on success, < 0 on error
	189	*/
	190	static int
	191	batadv_netlink_get_mesh_info(struct sk_buff skb, struct genl_info info)
	192	{
	193	struct net *net = genl_info_net(info);
	194	struct net_device *soft_iface;
	195	struct sk_buff *msg = NULL;
	196	void *msg_head;
	197	int ifindex;
	198	int ret;
	199
	200	if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
	201	return -EINVAL;
	202
	203	ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
	204	if (!ifindex)
	205	return -EINVAL;
	206
	207	soft_iface = dev_get_by_index(net, ifindex);
	208	if (!soft_iface \|\| !batadv_softif_is_valid(soft_iface)) {
	209	ret = -ENODEV;
	210	goto out;
	211	}
	212
	213	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	214	if (!msg) {
	215	ret = -ENOMEM;
	216	goto out;
	217	}
	218
	219	msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
	220	&batadv_netlink_family, 0,
	221	BATADV_CMD_GET_MESH_INFO);
	222	if (!msg_head) {
	223	ret = -ENOBUFS;
	224	goto out;
	225	}
	226
	227	ret = batadv_netlink_mesh_info_put(msg, soft_iface);
	228
	229	out:
	230	if (soft_iface)
	231	dev_put(soft_iface);
	232
	233	if (ret) {
	234	if (msg)
	235	nlmsg_free(msg);
	236	return ret;
	237	}
	238
	239	genlmsg_end(msg, msg_head);
	240	return genlmsg_reply(msg, info);
	241	}
	242
33a3bb4a	243	/**
7e9a8c2c	244	* batadv_netlink_tp_meter_put() - Fill information of started tp_meter session
33a3bb4a AQ	245	* @msg: netlink message to be sent back
	246	* @cookie: tp meter session cookie
	247	*
	248	* Return: 0 on success, < 0 on error
	249	*/
	250	static int
	251	batadv_netlink_tp_meter_put(struct sk_buff *msg, u32 cookie)
	252	{
	253	if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
	254	return -ENOBUFS;
	255
	256	return 0;
	257	}
	258
	259	/**
7e9a8c2c	260	* batadv_netlink_tpmeter_notify() - send tp_meter result via netlink to client
33a3bb4a AQ	261	* @bat_priv: the bat priv with all the soft interface information
	262	* @dst: destination of tp_meter session
	263	* @result: reason for tp meter session stop
	264	* @test_time: total time ot the tp_meter session
	265	* @total_bytes: bytes acked to the receiver
	266	* @cookie: cookie of tp_meter session
	267	*
	268	* Return: 0 on success, < 0 on error
	269	*/
	270	int batadv_netlink_tpmeter_notify(struct batadv_priv bat_priv, const u8 dst,
	271	u8 result, u32 test_time, u64 total_bytes,
	272	u32 cookie)
	273	{
	274	struct sk_buff *msg;
	275	void *hdr;
	276	int ret;
	277
	278	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	279	if (!msg)
	280	return -ENOMEM;
	281
	282	hdr = genlmsg_put(msg, 0, 0, &batadv_netlink_family, 0,
	283	BATADV_CMD_TP_METER);
	284	if (!hdr) {
	285	ret = -ENOBUFS;
	286	goto err_genlmsg;
	287	}
	288
	289	if (nla_put_u32(msg, BATADV_ATTR_TPMETER_COOKIE, cookie))
	290	goto nla_put_failure;
	291
	292	if (nla_put_u32(msg, BATADV_ATTR_TPMETER_TEST_TIME, test_time))
	293	goto nla_put_failure;
	294
	295	if (nla_put_u64_64bit(msg, BATADV_ATTR_TPMETER_BYTES, total_bytes,
	296	BATADV_ATTR_PAD))
	297	goto nla_put_failure;
	298
	299	if (nla_put_u8(msg, BATADV_ATTR_TPMETER_RESULT, result))
	300	goto nla_put_failure;
	301
	302	if (nla_put(msg, BATADV_ATTR_ORIG_ADDRESS, ETH_ALEN, dst))
	303	goto nla_put_failure;
	304
	305	genlmsg_end(msg, hdr);
	306
	307	genlmsg_multicast_netns(&batadv_netlink_family,
	308	dev_net(bat_priv->soft_iface), msg, 0,
	309	BATADV_NL_MCGRP_TPMETER, GFP_KERNEL);
	310
	311	return 0;
	312
	313	nla_put_failure:
	314	genlmsg_cancel(msg, hdr);
	315	ret = -EMSGSIZE;
	316
	317	err_genlmsg:
	318	nlmsg_free(msg);
	319	return ret;
	320	}
	321
	322	/**
7e9a8c2c	323	* batadv_netlink_tp_meter_start() - Start a new tp_meter session
33a3bb4a AQ	324	* @skb: received netlink message
	325	* @info: receiver information
	326	*
	327	* Return: 0 on success, < 0 on error
	328	*/
	329	static int
	330	batadv_netlink_tp_meter_start(struct sk_buff skb, struct genl_info info)
	331	{
	332	struct net *net = genl_info_net(info);
	333	struct net_device *soft_iface;
	334	struct batadv_priv *bat_priv;
	335	struct sk_buff *msg = NULL;
	336	u32 test_length;
	337	void *msg_head;
	338	int ifindex;
	339	u32 cookie;
	340	u8 *dst;
	341	int ret;
	342
	343	if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
	344	return -EINVAL;
	345
	346	if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
	347	return -EINVAL;
	348
	349	if (!info->attrs[BATADV_ATTR_TPMETER_TEST_TIME])
	350	return -EINVAL;
	351
	352	ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
	353	if (!ifindex)
	354	return -EINVAL;
	355
	356	dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
	357
	358	test_length = nla_get_u32(info->attrs[BATADV_ATTR_TPMETER_TEST_TIME]);
	359
	360	soft_iface = dev_get_by_index(net, ifindex);
	361	if (!soft_iface \|\| !batadv_softif_is_valid(soft_iface)) {
	362	ret = -ENODEV;
	363	goto out;
	364	}
	365
	366	msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
	367	if (!msg) {
	368	ret = -ENOMEM;
	369	goto out;
	370	}
	371
	372	msg_head = genlmsg_put(msg, info->snd_portid, info->snd_seq,
	373	&batadv_netlink_family, 0,
	374	BATADV_CMD_TP_METER);
	375	if (!msg_head) {
	376	ret = -ENOBUFS;
	377	goto out;
	378	}
	379
	380	bat_priv = netdev_priv(soft_iface);
	381	batadv_tp_start(bat_priv, dst, test_length, &cookie);
	382
	383	ret = batadv_netlink_tp_meter_put(msg, cookie);
	384
	385	out:
	386	if (soft_iface)
	387	dev_put(soft_iface);
388
389	if (ret) {
390	if (msg)
391	nlmsg_free(msg);
392	return ret;
393	}
394
395	genlmsg_end(msg, msg_head);
396	return genlmsg_reply(msg, info);
397	}
398
399	/**
7e9a8c2c	400	* batadv_netlink_tp_meter_start() - Cancel a running tp_meter session
33a3bb4a AQ	401	* @skb: received netlink message
	402	* @info: receiver information
	403	*
	404	* Return: 0 on success, < 0 on error
	405	*/
	406	static int
	407	batadv_netlink_tp_meter_cancel(struct sk_buff skb, struct genl_info info)
	408	{
	409	struct net *net = genl_info_net(info);
	410	struct net_device *soft_iface;
	411	struct batadv_priv *bat_priv;
	412	int ifindex;
	413	u8 *dst;
	414	int ret = 0;
	415
	416	if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
	417	return -EINVAL;
	418
	419	if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
	420	return -EINVAL;
	421
	422	ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
	423	if (!ifindex)
	424	return -EINVAL;
	425
	426	dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
	427
	428	soft_iface = dev_get_by_index(net, ifindex);
	429	if (!soft_iface \|\| !batadv_softif_is_valid(soft_iface)) {
	430	ret = -ENODEV;
	431	goto out;
	432	}
	433
	434	bat_priv = netdev_priv(soft_iface);
	435	batadv_tp_stop(bat_priv, dst, BATADV_TP_REASON_CANCEL);
	436
	437	out:
	438	if (soft_iface)
	439	dev_put(soft_iface);
	440
	441	return ret;
	442	}
	443
b60620cf	444	/**
7e9a8c2c	445	* batadv_netlink_dump_hardif_entry() - Dump one hard interface into a message
b60620cf MS	446	* @msg: Netlink message to dump into
	447	* @portid: Port making netlink request
	448	* @seq: Sequence number of netlink message
	449	* @hard_iface: Hard interface to dump
	450	*
	451	* Return: error code, or 0 on success
	452	*/
	453	static int
	454	batadv_netlink_dump_hardif_entry(struct sk_buff *msg, u32 portid, u32 seq,
	455	struct batadv_hard_iface *hard_iface)
	456	{
	457	struct net_device *net_dev = hard_iface->net_dev;
	458	void *hdr;
	459
	460	hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, NLM_F_MULTI,
	461	BATADV_CMD_GET_HARDIFS);
	462	if (!hdr)
	463	return -EMSGSIZE;
	464
	465	if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
	466	net_dev->ifindex) \|\|
	467	nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
	468	net_dev->name) \|\|
	469	nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
	470	net_dev->dev_addr))
	471	goto nla_put_failure;
	472
	473	if (hard_iface->if_status == BATADV_IF_ACTIVE) {
	474	if (nla_put_flag(msg, BATADV_ATTR_ACTIVE))
	475	goto nla_put_failure;
	476	}
	477
	478	genlmsg_end(msg, hdr);
	479	return 0;
	480
	481	nla_put_failure:
	482	genlmsg_cancel(msg, hdr);
	483	return -EMSGSIZE;
	484	}
	485
	486	/**
7e9a8c2c	487	* batadv_netlink_dump_hardifs() - Dump all hard interface into a messages
b60620cf MS	488	* @msg: Netlink message to dump into
	489	* @cb: Parameters from query
	490	*
	491	* Return: error code, or length of reply message on success
	492	*/
	493	static int
	494	batadv_netlink_dump_hardifs(struct sk_buff msg, struct netlink_callback cb)
	495	{
	496	struct net *net = sock_net(cb->skb->sk);
	497	struct net_device *soft_iface;
	498	struct batadv_hard_iface *hard_iface;
	499	int ifindex;
	500	int portid = NETLINK_CB(cb->skb).portid;
	501	int seq = cb->nlh->nlmsg_seq;
	502	int skip = cb->args[0];
	503	int i = 0;
	504
	505	ifindex = batadv_netlink_get_ifindex(cb->nlh,
	506	BATADV_ATTR_MESH_IFINDEX);
	507	if (!ifindex)
	508	return -EINVAL;
	509
	510	soft_iface = dev_get_by_index(net, ifindex);
	511	if (!soft_iface)
	512	return -ENODEV;
	513
	514	if (!batadv_softif_is_valid(soft_iface)) {
	515	dev_put(soft_iface);
	516	return -ENODEV;
	517	}
	518
	519	rcu_read_lock();
	520
	521	list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
	522	if (hard_iface->soft_iface != soft_iface)
	523	continue;
	524
	525	if (i++ < skip)
	526	continue;
	527
	528	if (batadv_netlink_dump_hardif_entry(msg, portid, seq,
	529	hard_iface)) {
	530	i--;
	531	break;
	532	}
	533	}
	534
	535	rcu_read_unlock();
	536
	537	dev_put(soft_iface);
	538
	539	cb->args[0] = i;
	540
	541	return msg->len;
	542	}
	543
ce1a21d1	544	static const struct genl_ops batadv_netlink_ops[] = {
5da0aef5 MS	545	{
	546	.cmd = BATADV_CMD_GET_MESH_INFO,
	547	.flags = GENL_ADMIN_PERM,
	548	.policy = batadv_netlink_policy,
	549	.doit = batadv_netlink_get_mesh_info,
	550	},
33a3bb4a AQ	551	{
	552	.cmd = BATADV_CMD_TP_METER,
	553	.flags = GENL_ADMIN_PERM,
	554	.policy = batadv_netlink_policy,
	555	.doit = batadv_netlink_tp_meter_start,
	556	},
	557	{
	558	.cmd = BATADV_CMD_TP_METER_CANCEL,
	559	.flags = GENL_ADMIN_PERM,
	560	.policy = batadv_netlink_policy,
	561	.doit = batadv_netlink_tp_meter_cancel,
	562	},
07a3061e MS	563	{
	564	.cmd = BATADV_CMD_GET_ROUTING_ALGOS,
	565	.flags = GENL_ADMIN_PERM,
	566	.policy = batadv_netlink_policy,
	567	.dumpit = batadv_algo_dump,
	568	},
b60620cf MS	569	{
	570	.cmd = BATADV_CMD_GET_HARDIFS,
	571	.flags = GENL_ADMIN_PERM,
	572	.policy = batadv_netlink_policy,
	573	.dumpit = batadv_netlink_dump_hardifs,
	574	},
d34f0550 MS	575	{
	576	.cmd = BATADV_CMD_GET_TRANSTABLE_LOCAL,
	577	.flags = GENL_ADMIN_PERM,
	578	.policy = batadv_netlink_policy,
	579	.dumpit = batadv_tt_local_dump,
	580	},
	581	{
	582	.cmd = BATADV_CMD_GET_TRANSTABLE_GLOBAL,
	583	.flags = GENL_ADMIN_PERM,
	584	.policy = batadv_netlink_policy,
	585	.dumpit = batadv_tt_global_dump,
	586	},
85cf8c85 MS	587	{
	588	.cmd = BATADV_CMD_GET_ORIGINATORS,
	589	.flags = GENL_ADMIN_PERM,
	590	.policy = batadv_netlink_policy,
	591	.dumpit = batadv_orig_dump,
	592	},
	593	{
	594	.cmd = BATADV_CMD_GET_NEIGHBORS,
	595	.flags = GENL_ADMIN_PERM,
	596	.policy = batadv_netlink_policy,
	597	.dumpit = batadv_hardif_neigh_dump,
	598	},
d7129daf SE	599	{
	600	.cmd = BATADV_CMD_GET_GATEWAYS,
	601	.flags = GENL_ADMIN_PERM,
	602	.policy = batadv_netlink_policy,
	603	.dumpit = batadv_gw_dump,
	604	},
04f3f5bf AL	605	{
	606	.cmd = BATADV_CMD_GET_BLA_CLAIM,
	607	.flags = GENL_ADMIN_PERM,
	608	.policy = batadv_netlink_policy,
	609	.dumpit = batadv_bla_claim_dump,
	610	},
ea4152e1 SW	611	{
	612	.cmd = BATADV_CMD_GET_BLA_BACKBONE,
	613	.flags = GENL_ADMIN_PERM,
	614	.policy = batadv_netlink_policy,
	615	.dumpit = batadv_bla_backbone_dump,
	616	},
41aeefcc LL	617	{
	618	.cmd = BATADV_CMD_GET_DAT_CACHE,
	619	.flags = GENL_ADMIN_PERM,
	620	.policy = batadv_netlink_policy,
	621	.dumpit = batadv_dat_cache_dump,
	622	},
53dd9a68 LL	623	{
	624	.cmd = BATADV_CMD_GET_MCAST_FLAGS,
	625	.flags = GENL_ADMIN_PERM,
	626	.policy = batadv_netlink_policy,
	627	.dumpit = batadv_mcast_flags_dump,
	628	},
ea4152e1	629
09748a22 MS	630	};
09748a22 MS	631
56989f6d	632	struct genl_family batadv_netlink_family __ro_after_init = {
489111e5 JB	633	.hdrsize = 0,
	634	.name = BATADV_NL_NAME,
	635	.version = 1,
	636	.maxattr = BATADV_ATTR_MAX,
	637	.netnsok = true,
	638	.module = THIS_MODULE,
	639	.ops = batadv_netlink_ops,
	640	.n_ops = ARRAY_SIZE(batadv_netlink_ops),
	641	.mcgrps = batadv_netlink_mcgrps,
	642	.n_mcgrps = ARRAY_SIZE(batadv_netlink_mcgrps),
	643	};
	644
09748a22	645	/**
7e9a8c2c	646	* batadv_netlink_register() - register batadv genl netlink family
09748a22 MS	647	*/
	648	void __init batadv_netlink_register(void)
	649	{
	650	int ret;
	651
489111e5	652	ret = genl_register_family(&batadv_netlink_family);
09748a22 MS	653	if (ret)
	654	pr_warn("unable to register netlink family");
	655	}
	656
	657	/**
7e9a8c2c	658	* batadv_netlink_unregister() - unregister batadv genl netlink family
09748a22 MS	659	*/
	660	void batadv_netlink_unregister(void)
	661	{
	662	genl_unregister_family(&batadv_netlink_family);
	663	}