1502 lines
40 KiB
C
1502 lines
40 KiB
C
// SPDX-License-Identifier: GPL-2.0
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/* Copyright (C) 2016-2019 B.A.T.M.A.N. contributors:
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*
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* Matthias Schiffer
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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 version 2 of the GNU General Public
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* License as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "netlink.h"
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#include "main.h"
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#include <linux/atomic.h>
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#include <linux/bitops.h>
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#include <linux/bug.h>
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#include <linux/byteorder/generic.h>
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#include <linux/cache.h>
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#include <linux/err.h>
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#include <linux/errno.h>
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#include <linux/export.h>
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#include <linux/genetlink.h>
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#include <linux/gfp.h>
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#include <linux/if_ether.h>
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#include <linux/if_vlan.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/netdevice.h>
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#include <linux/netlink.h>
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#include <linux/printk.h>
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#include <linux/rtnetlink.h>
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#include <linux/skbuff.h>
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#include <linux/stddef.h>
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#include <linux/types.h>
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#include <net/genetlink.h>
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#include <net/netlink.h>
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#include <net/sock.h>
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#include <uapi/linux/batadv_packet.h>
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#include <uapi/linux/batman_adv.h>
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#include "bat_algo.h"
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#include "bridge_loop_avoidance.h"
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#include "distributed-arp-table.h"
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#include "gateway_client.h"
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#include "gateway_common.h"
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#include "hard-interface.h"
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#include "log.h"
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#include "multicast.h"
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#include "network-coding.h"
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#include "originator.h"
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#include "soft-interface.h"
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#include "tp_meter.h"
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#include "translation-table.h"
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struct net;
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struct genl_family batadv_netlink_family;
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/* multicast groups */
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enum batadv_netlink_multicast_groups {
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BATADV_NL_MCGRP_CONFIG,
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BATADV_NL_MCGRP_TPMETER,
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};
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/**
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* enum batadv_genl_ops_flags - flags for genl_ops's internal_flags
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*/
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enum batadv_genl_ops_flags {
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/**
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* @BATADV_FLAG_NEED_MESH: request requires valid soft interface in
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* attribute BATADV_ATTR_MESH_IFINDEX and expects a pointer to it to be
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* saved in info->user_ptr[0]
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*/
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BATADV_FLAG_NEED_MESH = BIT(0),
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/**
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* @BATADV_FLAG_NEED_HARDIF: request requires valid hard interface in
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* attribute BATADV_ATTR_HARD_IFINDEX and expects a pointer to it to be
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* saved in info->user_ptr[1]
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*/
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BATADV_FLAG_NEED_HARDIF = BIT(1),
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/**
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* @BATADV_FLAG_NEED_VLAN: request requires valid vlan in
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* attribute BATADV_ATTR_VLANID and expects a pointer to it to be
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* saved in info->user_ptr[1]
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*/
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BATADV_FLAG_NEED_VLAN = BIT(2),
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};
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static const struct genl_multicast_group batadv_netlink_mcgrps[] = {
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[BATADV_NL_MCGRP_CONFIG] = { .name = BATADV_NL_MCAST_GROUP_CONFIG },
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[BATADV_NL_MCGRP_TPMETER] = { .name = BATADV_NL_MCAST_GROUP_TPMETER },
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};
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static const struct nla_policy batadv_netlink_policy[NUM_BATADV_ATTR] = {
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[BATADV_ATTR_VERSION] = { .type = NLA_STRING },
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[BATADV_ATTR_ALGO_NAME] = { .type = NLA_STRING },
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[BATADV_ATTR_MESH_IFINDEX] = { .type = NLA_U32 },
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[BATADV_ATTR_MESH_IFNAME] = { .type = NLA_STRING },
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[BATADV_ATTR_MESH_ADDRESS] = { .len = ETH_ALEN },
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[BATADV_ATTR_HARD_IFINDEX] = { .type = NLA_U32 },
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[BATADV_ATTR_HARD_IFNAME] = { .type = NLA_STRING },
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[BATADV_ATTR_HARD_ADDRESS] = { .len = ETH_ALEN },
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[BATADV_ATTR_ORIG_ADDRESS] = { .len = ETH_ALEN },
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[BATADV_ATTR_TPMETER_RESULT] = { .type = NLA_U8 },
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[BATADV_ATTR_TPMETER_TEST_TIME] = { .type = NLA_U32 },
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[BATADV_ATTR_TPMETER_BYTES] = { .type = NLA_U64 },
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[BATADV_ATTR_TPMETER_COOKIE] = { .type = NLA_U32 },
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[BATADV_ATTR_ACTIVE] = { .type = NLA_FLAG },
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[BATADV_ATTR_TT_ADDRESS] = { .len = ETH_ALEN },
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[BATADV_ATTR_TT_TTVN] = { .type = NLA_U8 },
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[BATADV_ATTR_TT_LAST_TTVN] = { .type = NLA_U8 },
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[BATADV_ATTR_TT_CRC32] = { .type = NLA_U32 },
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[BATADV_ATTR_TT_VID] = { .type = NLA_U16 },
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[BATADV_ATTR_TT_FLAGS] = { .type = NLA_U32 },
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[BATADV_ATTR_FLAG_BEST] = { .type = NLA_FLAG },
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[BATADV_ATTR_LAST_SEEN_MSECS] = { .type = NLA_U32 },
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[BATADV_ATTR_NEIGH_ADDRESS] = { .len = ETH_ALEN },
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[BATADV_ATTR_TQ] = { .type = NLA_U8 },
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[BATADV_ATTR_THROUGHPUT] = { .type = NLA_U32 },
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[BATADV_ATTR_BANDWIDTH_UP] = { .type = NLA_U32 },
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[BATADV_ATTR_BANDWIDTH_DOWN] = { .type = NLA_U32 },
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[BATADV_ATTR_ROUTER] = { .len = ETH_ALEN },
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[BATADV_ATTR_BLA_OWN] = { .type = NLA_FLAG },
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[BATADV_ATTR_BLA_ADDRESS] = { .len = ETH_ALEN },
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[BATADV_ATTR_BLA_VID] = { .type = NLA_U16 },
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[BATADV_ATTR_BLA_BACKBONE] = { .len = ETH_ALEN },
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[BATADV_ATTR_BLA_CRC] = { .type = NLA_U16 },
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[BATADV_ATTR_DAT_CACHE_IP4ADDRESS] = { .type = NLA_U32 },
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[BATADV_ATTR_DAT_CACHE_HWADDRESS] = { .len = ETH_ALEN },
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[BATADV_ATTR_DAT_CACHE_VID] = { .type = NLA_U16 },
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[BATADV_ATTR_MCAST_FLAGS] = { .type = NLA_U32 },
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[BATADV_ATTR_MCAST_FLAGS_PRIV] = { .type = NLA_U32 },
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[BATADV_ATTR_VLANID] = { .type = NLA_U16 },
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[BATADV_ATTR_AGGREGATED_OGMS_ENABLED] = { .type = NLA_U8 },
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[BATADV_ATTR_AP_ISOLATION_ENABLED] = { .type = NLA_U8 },
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[BATADV_ATTR_ISOLATION_MARK] = { .type = NLA_U32 },
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[BATADV_ATTR_ISOLATION_MASK] = { .type = NLA_U32 },
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[BATADV_ATTR_BONDING_ENABLED] = { .type = NLA_U8 },
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[BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED] = { .type = NLA_U8 },
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[BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED] = { .type = NLA_U8 },
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[BATADV_ATTR_FRAGMENTATION_ENABLED] = { .type = NLA_U8 },
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[BATADV_ATTR_GW_BANDWIDTH_DOWN] = { .type = NLA_U32 },
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[BATADV_ATTR_GW_BANDWIDTH_UP] = { .type = NLA_U32 },
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[BATADV_ATTR_GW_MODE] = { .type = NLA_U8 },
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[BATADV_ATTR_GW_SEL_CLASS] = { .type = NLA_U32 },
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[BATADV_ATTR_HOP_PENALTY] = { .type = NLA_U8 },
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[BATADV_ATTR_LOG_LEVEL] = { .type = NLA_U32 },
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[BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED] = { .type = NLA_U8 },
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[BATADV_ATTR_NETWORK_CODING_ENABLED] = { .type = NLA_U8 },
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[BATADV_ATTR_ORIG_INTERVAL] = { .type = NLA_U32 },
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[BATADV_ATTR_ELP_INTERVAL] = { .type = NLA_U32 },
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[BATADV_ATTR_THROUGHPUT_OVERRIDE] = { .type = NLA_U32 },
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};
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/**
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* batadv_netlink_get_ifindex() - Extract an interface index from a message
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* @nlh: Message header
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* @attrtype: Attribute which holds an interface index
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*
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* Return: interface index, or 0.
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*/
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int
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batadv_netlink_get_ifindex(const struct nlmsghdr *nlh, int attrtype)
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{
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struct nlattr *attr = nlmsg_find_attr(nlh, GENL_HDRLEN, attrtype);
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return attr ? nla_get_u32(attr) : 0;
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}
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/**
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* batadv_netlink_mesh_fill_ap_isolation() - Add ap_isolation softif attribute
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* @msg: Netlink message to dump into
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* @bat_priv: the bat priv with all the soft interface information
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*
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* Return: 0 on success or negative error number in case of failure
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*/
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static int batadv_netlink_mesh_fill_ap_isolation(struct sk_buff *msg,
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struct batadv_priv *bat_priv)
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{
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struct batadv_softif_vlan *vlan;
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u8 ap_isolation;
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vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS);
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if (!vlan)
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return 0;
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ap_isolation = atomic_read(&vlan->ap_isolation);
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batadv_softif_vlan_put(vlan);
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return nla_put_u8(msg, BATADV_ATTR_AP_ISOLATION_ENABLED,
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!!ap_isolation);
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}
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/**
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* batadv_option_set_ap_isolation() - Set ap_isolation from genl msg
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* @attr: parsed BATADV_ATTR_AP_ISOLATION_ENABLED attribute
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* @bat_priv: the bat priv with all the soft interface information
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*
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* Return: 0 on success or negative error number in case of failure
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*/
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static int batadv_netlink_set_mesh_ap_isolation(struct nlattr *attr,
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struct batadv_priv *bat_priv)
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{
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struct batadv_softif_vlan *vlan;
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vlan = batadv_softif_vlan_get(bat_priv, BATADV_NO_FLAGS);
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if (!vlan)
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return -ENOENT;
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atomic_set(&vlan->ap_isolation, !!nla_get_u8(attr));
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batadv_softif_vlan_put(vlan);
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return 0;
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}
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/**
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* batadv_netlink_mesh_fill() - Fill message with mesh attributes
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* @msg: Netlink message to dump into
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* @bat_priv: the bat priv with all the soft interface information
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* @cmd: type of message to generate
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* @portid: Port making netlink request
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* @seq: sequence number for message
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* @flags: Additional flags for message
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*
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* Return: 0 on success or negative error number in case of failure
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*/
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static int batadv_netlink_mesh_fill(struct sk_buff *msg,
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struct batadv_priv *bat_priv,
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enum batadv_nl_commands cmd,
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u32 portid, u32 seq, int flags)
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{
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struct net_device *soft_iface = bat_priv->soft_iface;
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struct batadv_hard_iface *primary_if = NULL;
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struct net_device *hard_iface;
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void *hdr;
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hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, flags, cmd);
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if (!hdr)
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return -ENOBUFS;
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if (nla_put_string(msg, BATADV_ATTR_VERSION, BATADV_SOURCE_VERSION) ||
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nla_put_string(msg, BATADV_ATTR_ALGO_NAME,
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bat_priv->algo_ops->name) ||
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nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX, soft_iface->ifindex) ||
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nla_put_string(msg, BATADV_ATTR_MESH_IFNAME, soft_iface->name) ||
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nla_put(msg, BATADV_ATTR_MESH_ADDRESS, ETH_ALEN,
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soft_iface->dev_addr) ||
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nla_put_u8(msg, BATADV_ATTR_TT_TTVN,
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(u8)atomic_read(&bat_priv->tt.vn)))
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goto nla_put_failure;
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#ifdef CONFIG_BATMAN_ADV_BLA
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if (nla_put_u16(msg, BATADV_ATTR_BLA_CRC,
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ntohs(bat_priv->bla.claim_dest.group)))
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goto nla_put_failure;
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#endif
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if (batadv_mcast_mesh_info_put(msg, bat_priv))
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goto nla_put_failure;
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primary_if = batadv_primary_if_get_selected(bat_priv);
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if (primary_if && primary_if->if_status == BATADV_IF_ACTIVE) {
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hard_iface = primary_if->net_dev;
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if (nla_put_u32(msg, BATADV_ATTR_HARD_IFINDEX,
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hard_iface->ifindex) ||
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nla_put_string(msg, BATADV_ATTR_HARD_IFNAME,
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hard_iface->name) ||
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nla_put(msg, BATADV_ATTR_HARD_ADDRESS, ETH_ALEN,
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hard_iface->dev_addr))
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goto nla_put_failure;
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}
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if (nla_put_u8(msg, BATADV_ATTR_AGGREGATED_OGMS_ENABLED,
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!!atomic_read(&bat_priv->aggregated_ogms)))
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goto nla_put_failure;
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if (batadv_netlink_mesh_fill_ap_isolation(msg, bat_priv))
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goto nla_put_failure;
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if (nla_put_u32(msg, BATADV_ATTR_ISOLATION_MARK,
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bat_priv->isolation_mark))
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goto nla_put_failure;
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if (nla_put_u32(msg, BATADV_ATTR_ISOLATION_MASK,
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bat_priv->isolation_mark_mask))
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goto nla_put_failure;
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if (nla_put_u8(msg, BATADV_ATTR_BONDING_ENABLED,
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!!atomic_read(&bat_priv->bonding)))
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goto nla_put_failure;
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#ifdef CONFIG_BATMAN_ADV_BLA
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if (nla_put_u8(msg, BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED,
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!!atomic_read(&bat_priv->bridge_loop_avoidance)))
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goto nla_put_failure;
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#endif /* CONFIG_BATMAN_ADV_BLA */
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#ifdef CONFIG_BATMAN_ADV_DAT
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if (nla_put_u8(msg, BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED,
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!!atomic_read(&bat_priv->distributed_arp_table)))
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goto nla_put_failure;
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#endif /* CONFIG_BATMAN_ADV_DAT */
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if (nla_put_u8(msg, BATADV_ATTR_FRAGMENTATION_ENABLED,
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!!atomic_read(&bat_priv->fragmentation)))
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goto nla_put_failure;
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if (nla_put_u32(msg, BATADV_ATTR_GW_BANDWIDTH_DOWN,
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atomic_read(&bat_priv->gw.bandwidth_down)))
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goto nla_put_failure;
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if (nla_put_u32(msg, BATADV_ATTR_GW_BANDWIDTH_UP,
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atomic_read(&bat_priv->gw.bandwidth_up)))
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goto nla_put_failure;
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if (nla_put_u8(msg, BATADV_ATTR_GW_MODE,
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atomic_read(&bat_priv->gw.mode)))
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goto nla_put_failure;
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if (bat_priv->algo_ops->gw.get_best_gw_node &&
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bat_priv->algo_ops->gw.is_eligible) {
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/* GW selection class is not available if the routing algorithm
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* in use does not implement the GW API
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*/
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if (nla_put_u32(msg, BATADV_ATTR_GW_SEL_CLASS,
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atomic_read(&bat_priv->gw.sel_class)))
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goto nla_put_failure;
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}
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if (nla_put_u8(msg, BATADV_ATTR_HOP_PENALTY,
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atomic_read(&bat_priv->hop_penalty)))
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goto nla_put_failure;
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#ifdef CONFIG_BATMAN_ADV_DEBUG
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if (nla_put_u32(msg, BATADV_ATTR_LOG_LEVEL,
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atomic_read(&bat_priv->log_level)))
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goto nla_put_failure;
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#endif /* CONFIG_BATMAN_ADV_DEBUG */
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#ifdef CONFIG_BATMAN_ADV_MCAST
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if (nla_put_u8(msg, BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED,
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!atomic_read(&bat_priv->multicast_mode)))
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goto nla_put_failure;
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#endif /* CONFIG_BATMAN_ADV_MCAST */
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#ifdef CONFIG_BATMAN_ADV_NC
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if (nla_put_u8(msg, BATADV_ATTR_NETWORK_CODING_ENABLED,
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!!atomic_read(&bat_priv->network_coding)))
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goto nla_put_failure;
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#endif /* CONFIG_BATMAN_ADV_NC */
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if (nla_put_u32(msg, BATADV_ATTR_ORIG_INTERVAL,
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atomic_read(&bat_priv->orig_interval)))
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goto nla_put_failure;
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if (primary_if)
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batadv_hardif_put(primary_if);
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genlmsg_end(msg, hdr);
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return 0;
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nla_put_failure:
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if (primary_if)
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batadv_hardif_put(primary_if);
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genlmsg_cancel(msg, hdr);
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return -EMSGSIZE;
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}
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/**
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* batadv_netlink_notify_mesh() - send softif attributes to listener
|
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* @bat_priv: the bat priv with all the soft interface information
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*
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* Return: 0 on success, < 0 on error
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*/
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int batadv_netlink_notify_mesh(struct batadv_priv *bat_priv)
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{
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struct sk_buff *msg;
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int ret;
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msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
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if (!msg)
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return -ENOMEM;
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ret = batadv_netlink_mesh_fill(msg, bat_priv, BATADV_CMD_SET_MESH,
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0, 0, 0);
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if (ret < 0) {
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nlmsg_free(msg);
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return ret;
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}
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genlmsg_multicast_netns(&batadv_netlink_family,
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dev_net(bat_priv->soft_iface), msg, 0,
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BATADV_NL_MCGRP_CONFIG, GFP_KERNEL);
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return 0;
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}
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|
/**
|
|
* batadv_netlink_get_mesh() - Get softif attributes
|
|
* @skb: Netlink message with request data
|
|
* @info: receiver information
|
|
*
|
|
* Return: 0 on success or negative error number in case of failure
|
|
*/
|
|
static int batadv_netlink_get_mesh(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct batadv_priv *bat_priv = info->user_ptr[0];
|
|
struct sk_buff *msg;
|
|
int ret;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
ret = batadv_netlink_mesh_fill(msg, bat_priv, BATADV_CMD_GET_MESH,
|
|
info->snd_portid, info->snd_seq, 0);
|
|
if (ret < 0) {
|
|
nlmsg_free(msg);
|
|
return ret;
|
|
}
|
|
|
|
ret = genlmsg_reply(msg, info);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* batadv_netlink_set_mesh() - Set softif attributes
|
|
* @skb: Netlink message with request data
|
|
* @info: receiver information
|
|
*
|
|
* Return: 0 on success or negative error number in case of failure
|
|
*/
|
|
static int batadv_netlink_set_mesh(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct batadv_priv *bat_priv = info->user_ptr[0];
|
|
struct nlattr *attr;
|
|
|
|
if (info->attrs[BATADV_ATTR_AGGREGATED_OGMS_ENABLED]) {
|
|
attr = info->attrs[BATADV_ATTR_AGGREGATED_OGMS_ENABLED];
|
|
|
|
atomic_set(&bat_priv->aggregated_ogms, !!nla_get_u8(attr));
|
|
}
|
|
|
|
if (info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED]) {
|
|
attr = info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED];
|
|
|
|
batadv_netlink_set_mesh_ap_isolation(attr, bat_priv);
|
|
}
|
|
|
|
if (info->attrs[BATADV_ATTR_ISOLATION_MARK]) {
|
|
attr = info->attrs[BATADV_ATTR_ISOLATION_MARK];
|
|
|
|
bat_priv->isolation_mark = nla_get_u32(attr);
|
|
}
|
|
|
|
if (info->attrs[BATADV_ATTR_ISOLATION_MASK]) {
|
|
attr = info->attrs[BATADV_ATTR_ISOLATION_MASK];
|
|
|
|
bat_priv->isolation_mark_mask = nla_get_u32(attr);
|
|
}
|
|
|
|
if (info->attrs[BATADV_ATTR_BONDING_ENABLED]) {
|
|
attr = info->attrs[BATADV_ATTR_BONDING_ENABLED];
|
|
|
|
atomic_set(&bat_priv->bonding, !!nla_get_u8(attr));
|
|
}
|
|
|
|
#ifdef CONFIG_BATMAN_ADV_BLA
|
|
if (info->attrs[BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED]) {
|
|
attr = info->attrs[BATADV_ATTR_BRIDGE_LOOP_AVOIDANCE_ENABLED];
|
|
|
|
atomic_set(&bat_priv->bridge_loop_avoidance,
|
|
!!nla_get_u8(attr));
|
|
batadv_bla_status_update(bat_priv->soft_iface);
|
|
}
|
|
#endif /* CONFIG_BATMAN_ADV_BLA */
|
|
|
|
#ifdef CONFIG_BATMAN_ADV_DAT
|
|
if (info->attrs[BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED]) {
|
|
attr = info->attrs[BATADV_ATTR_DISTRIBUTED_ARP_TABLE_ENABLED];
|
|
|
|
atomic_set(&bat_priv->distributed_arp_table,
|
|
!!nla_get_u8(attr));
|
|
batadv_dat_status_update(bat_priv->soft_iface);
|
|
}
|
|
#endif /* CONFIG_BATMAN_ADV_DAT */
|
|
|
|
if (info->attrs[BATADV_ATTR_FRAGMENTATION_ENABLED]) {
|
|
attr = info->attrs[BATADV_ATTR_FRAGMENTATION_ENABLED];
|
|
|
|
atomic_set(&bat_priv->fragmentation, !!nla_get_u8(attr));
|
|
batadv_update_min_mtu(bat_priv->soft_iface);
|
|
}
|
|
|
|
if (info->attrs[BATADV_ATTR_GW_BANDWIDTH_DOWN]) {
|
|
attr = info->attrs[BATADV_ATTR_GW_BANDWIDTH_DOWN];
|
|
|
|
atomic_set(&bat_priv->gw.bandwidth_down, nla_get_u32(attr));
|
|
batadv_gw_tvlv_container_update(bat_priv);
|
|
}
|
|
|
|
if (info->attrs[BATADV_ATTR_GW_BANDWIDTH_UP]) {
|
|
attr = info->attrs[BATADV_ATTR_GW_BANDWIDTH_UP];
|
|
|
|
atomic_set(&bat_priv->gw.bandwidth_up, nla_get_u32(attr));
|
|
batadv_gw_tvlv_container_update(bat_priv);
|
|
}
|
|
|
|
if (info->attrs[BATADV_ATTR_GW_MODE]) {
|
|
u8 gw_mode;
|
|
|
|
attr = info->attrs[BATADV_ATTR_GW_MODE];
|
|
gw_mode = nla_get_u8(attr);
|
|
|
|
if (gw_mode <= BATADV_GW_MODE_SERVER) {
|
|
/* Invoking batadv_gw_reselect() is not enough to really
|
|
* de-select the current GW. It will only instruct the
|
|
* gateway client code to perform a re-election the next
|
|
* time that this is needed.
|
|
*
|
|
* When gw client mode is being switched off the current
|
|
* GW must be de-selected explicitly otherwise no GW_ADD
|
|
* uevent is thrown on client mode re-activation. This
|
|
* is operation is performed in
|
|
* batadv_gw_check_client_stop().
|
|
*/
|
|
batadv_gw_reselect(bat_priv);
|
|
|
|
/* always call batadv_gw_check_client_stop() before
|
|
* changing the gateway state
|
|
*/
|
|
batadv_gw_check_client_stop(bat_priv);
|
|
atomic_set(&bat_priv->gw.mode, gw_mode);
|
|
batadv_gw_tvlv_container_update(bat_priv);
|
|
}
|
|
}
|
|
|
|
if (info->attrs[BATADV_ATTR_GW_SEL_CLASS] &&
|
|
bat_priv->algo_ops->gw.get_best_gw_node &&
|
|
bat_priv->algo_ops->gw.is_eligible) {
|
|
/* setting the GW selection class is allowed only if the routing
|
|
* algorithm in use implements the GW API
|
|
*/
|
|
|
|
u32 sel_class_max = 0xffffffffu;
|
|
u32 sel_class;
|
|
|
|
attr = info->attrs[BATADV_ATTR_GW_SEL_CLASS];
|
|
sel_class = nla_get_u32(attr);
|
|
|
|
if (!bat_priv->algo_ops->gw.store_sel_class)
|
|
sel_class_max = BATADV_TQ_MAX_VALUE;
|
|
|
|
if (sel_class >= 1 && sel_class <= sel_class_max) {
|
|
atomic_set(&bat_priv->gw.sel_class, sel_class);
|
|
batadv_gw_reselect(bat_priv);
|
|
}
|
|
}
|
|
|
|
if (info->attrs[BATADV_ATTR_HOP_PENALTY]) {
|
|
attr = info->attrs[BATADV_ATTR_HOP_PENALTY];
|
|
|
|
atomic_set(&bat_priv->hop_penalty, nla_get_u8(attr));
|
|
}
|
|
|
|
#ifdef CONFIG_BATMAN_ADV_DEBUG
|
|
if (info->attrs[BATADV_ATTR_LOG_LEVEL]) {
|
|
attr = info->attrs[BATADV_ATTR_LOG_LEVEL];
|
|
|
|
atomic_set(&bat_priv->log_level,
|
|
nla_get_u32(attr) & BATADV_DBG_ALL);
|
|
}
|
|
#endif /* CONFIG_BATMAN_ADV_DEBUG */
|
|
|
|
#ifdef CONFIG_BATMAN_ADV_MCAST
|
|
if (info->attrs[BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED]) {
|
|
attr = info->attrs[BATADV_ATTR_MULTICAST_FORCEFLOOD_ENABLED];
|
|
|
|
atomic_set(&bat_priv->multicast_mode, !nla_get_u8(attr));
|
|
}
|
|
#endif /* CONFIG_BATMAN_ADV_MCAST */
|
|
|
|
#ifdef CONFIG_BATMAN_ADV_NC
|
|
if (info->attrs[BATADV_ATTR_NETWORK_CODING_ENABLED]) {
|
|
attr = info->attrs[BATADV_ATTR_NETWORK_CODING_ENABLED];
|
|
|
|
atomic_set(&bat_priv->network_coding, !!nla_get_u8(attr));
|
|
batadv_nc_status_update(bat_priv->soft_iface);
|
|
}
|
|
#endif /* CONFIG_BATMAN_ADV_NC */
|
|
|
|
if (info->attrs[BATADV_ATTR_ORIG_INTERVAL]) {
|
|
u32 orig_interval;
|
|
|
|
attr = info->attrs[BATADV_ATTR_ORIG_INTERVAL];
|
|
orig_interval = nla_get_u32(attr);
|
|
|
|
orig_interval = min_t(u32, orig_interval, INT_MAX);
|
|
orig_interval = max_t(u32, orig_interval, 2 * BATADV_JITTER);
|
|
|
|
atomic_set(&bat_priv->orig_interval, orig_interval);
|
|
}
|
|
|
|
batadv_netlink_notify_mesh(bat_priv);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* 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 batadv_priv *bat_priv = info->user_ptr[0];
|
|
struct sk_buff *msg = NULL;
|
|
u32 test_length;
|
|
void *msg_head;
|
|
u32 cookie;
|
|
u8 *dst;
|
|
int ret;
|
|
|
|
if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
|
|
return -EINVAL;
|
|
|
|
if (!info->attrs[BATADV_ATTR_TPMETER_TEST_TIME])
|
|
return -EINVAL;
|
|
|
|
dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
|
|
|
|
test_length = nla_get_u32(info->attrs[BATADV_ATTR_TPMETER_TEST_TIME]);
|
|
|
|
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;
|
|
}
|
|
|
|
batadv_tp_start(bat_priv, dst, test_length, &cookie);
|
|
|
|
ret = batadv_netlink_tp_meter_put(msg, cookie);
|
|
|
|
out:
|
|
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 batadv_priv *bat_priv = info->user_ptr[0];
|
|
u8 *dst;
|
|
int ret = 0;
|
|
|
|
if (!info->attrs[BATADV_ATTR_ORIG_ADDRESS])
|
|
return -EINVAL;
|
|
|
|
dst = nla_data(info->attrs[BATADV_ATTR_ORIG_ADDRESS]);
|
|
|
|
batadv_tp_stop(bat_priv, dst, BATADV_TP_REASON_CANCEL);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* batadv_netlink_hardif_fill() - Fill message with hardif attributes
|
|
* @msg: Netlink message to dump into
|
|
* @bat_priv: the bat priv with all the soft interface information
|
|
* @hard_iface: hard interface which was modified
|
|
* @cmd: type of message to generate
|
|
* @portid: Port making netlink request
|
|
* @seq: sequence number for message
|
|
* @flags: Additional flags for message
|
|
* @cb: Control block containing additional options
|
|
*
|
|
* Return: 0 on success or negative error number in case of failure
|
|
*/
|
|
static int batadv_netlink_hardif_fill(struct sk_buff *msg,
|
|
struct batadv_priv *bat_priv,
|
|
struct batadv_hard_iface *hard_iface,
|
|
enum batadv_nl_commands cmd,
|
|
u32 portid, u32 seq, int flags,
|
|
struct netlink_callback *cb)
|
|
{
|
|
struct net_device *net_dev = hard_iface->net_dev;
|
|
void *hdr;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, flags, cmd);
|
|
if (!hdr)
|
|
return -ENOBUFS;
|
|
|
|
if (cb)
|
|
genl_dump_check_consistent(cb, hdr);
|
|
|
|
if (nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX,
|
|
bat_priv->soft_iface->ifindex))
|
|
goto nla_put_failure;
|
|
|
|
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;
|
|
}
|
|
|
|
#ifdef CONFIG_BATMAN_ADV_BATMAN_V
|
|
if (nla_put_u32(msg, BATADV_ATTR_ELP_INTERVAL,
|
|
atomic_read(&hard_iface->bat_v.elp_interval)))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u32(msg, BATADV_ATTR_THROUGHPUT_OVERRIDE,
|
|
atomic_read(&hard_iface->bat_v.throughput_override)))
|
|
goto nla_put_failure;
|
|
#endif /* CONFIG_BATMAN_ADV_BATMAN_V */
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
/**
|
|
* batadv_netlink_notify_hardif() - send hardif attributes to listener
|
|
* @bat_priv: the bat priv with all the soft interface information
|
|
* @hard_iface: hard interface which was modified
|
|
*
|
|
* Return: 0 on success, < 0 on error
|
|
*/
|
|
int batadv_netlink_notify_hardif(struct batadv_priv *bat_priv,
|
|
struct batadv_hard_iface *hard_iface)
|
|
{
|
|
struct sk_buff *msg;
|
|
int ret;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
ret = batadv_netlink_hardif_fill(msg, bat_priv, hard_iface,
|
|
BATADV_CMD_SET_HARDIF, 0, 0, 0, NULL);
|
|
if (ret < 0) {
|
|
nlmsg_free(msg);
|
|
return ret;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&batadv_netlink_family,
|
|
dev_net(bat_priv->soft_iface), msg, 0,
|
|
BATADV_NL_MCGRP_CONFIG, GFP_KERNEL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* batadv_netlink_get_hardif() - Get hardif attributes
|
|
* @skb: Netlink message with request data
|
|
* @info: receiver information
|
|
*
|
|
* Return: 0 on success or negative error number in case of failure
|
|
*/
|
|
static int batadv_netlink_get_hardif(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct batadv_hard_iface *hard_iface = info->user_ptr[1];
|
|
struct batadv_priv *bat_priv = info->user_ptr[0];
|
|
struct sk_buff *msg;
|
|
int ret;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
ret = batadv_netlink_hardif_fill(msg, bat_priv, hard_iface,
|
|
BATADV_CMD_GET_HARDIF,
|
|
info->snd_portid, info->snd_seq, 0,
|
|
NULL);
|
|
if (ret < 0) {
|
|
nlmsg_free(msg);
|
|
return ret;
|
|
}
|
|
|
|
ret = genlmsg_reply(msg, info);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* batadv_netlink_set_hardif() - Set hardif attributes
|
|
* @skb: Netlink message with request data
|
|
* @info: receiver information
|
|
*
|
|
* Return: 0 on success or negative error number in case of failure
|
|
*/
|
|
static int batadv_netlink_set_hardif(struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct batadv_hard_iface *hard_iface = info->user_ptr[1];
|
|
struct batadv_priv *bat_priv = info->user_ptr[0];
|
|
|
|
#ifdef CONFIG_BATMAN_ADV_BATMAN_V
|
|
struct nlattr *attr;
|
|
|
|
if (info->attrs[BATADV_ATTR_ELP_INTERVAL]) {
|
|
attr = info->attrs[BATADV_ATTR_ELP_INTERVAL];
|
|
|
|
atomic_set(&hard_iface->bat_v.elp_interval, nla_get_u32(attr));
|
|
}
|
|
|
|
if (info->attrs[BATADV_ATTR_THROUGHPUT_OVERRIDE]) {
|
|
attr = info->attrs[BATADV_ATTR_THROUGHPUT_OVERRIDE];
|
|
|
|
atomic_set(&hard_iface->bat_v.throughput_override,
|
|
nla_get_u32(attr));
|
|
}
|
|
#endif /* CONFIG_BATMAN_ADV_BATMAN_V */
|
|
|
|
batadv_netlink_notify_hardif(bat_priv, hard_iface);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* batadv_netlink_dump_hardif() - 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_hardif(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;
|
|
struct batadv_priv *bat_priv;
|
|
int ifindex;
|
|
int portid = NETLINK_CB(cb->skb).portid;
|
|
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;
|
|
}
|
|
|
|
bat_priv = netdev_priv(soft_iface);
|
|
|
|
rtnl_lock();
|
|
cb->seq = batadv_hardif_generation << 1 | 1;
|
|
|
|
list_for_each_entry(hard_iface, &batadv_hardif_list, list) {
|
|
if (hard_iface->soft_iface != soft_iface)
|
|
continue;
|
|
|
|
if (i++ < skip)
|
|
continue;
|
|
|
|
if (batadv_netlink_hardif_fill(msg, bat_priv, hard_iface,
|
|
BATADV_CMD_GET_HARDIF,
|
|
portid, cb->nlh->nlmsg_seq,
|
|
NLM_F_MULTI, cb)) {
|
|
i--;
|
|
break;
|
|
}
|
|
}
|
|
|
|
rtnl_unlock();
|
|
|
|
dev_put(soft_iface);
|
|
|
|
cb->args[0] = i;
|
|
|
|
return msg->len;
|
|
}
|
|
|
|
/**
|
|
* batadv_netlink_vlan_fill() - Fill message with vlan attributes
|
|
* @msg: Netlink message to dump into
|
|
* @bat_priv: the bat priv with all the soft interface information
|
|
* @vlan: vlan which was modified
|
|
* @cmd: type of message to generate
|
|
* @portid: Port making netlink request
|
|
* @seq: sequence number for message
|
|
* @flags: Additional flags for message
|
|
*
|
|
* Return: 0 on success or negative error number in case of failure
|
|
*/
|
|
static int batadv_netlink_vlan_fill(struct sk_buff *msg,
|
|
struct batadv_priv *bat_priv,
|
|
struct batadv_softif_vlan *vlan,
|
|
enum batadv_nl_commands cmd,
|
|
u32 portid, u32 seq, int flags)
|
|
{
|
|
void *hdr;
|
|
|
|
hdr = genlmsg_put(msg, portid, seq, &batadv_netlink_family, flags, cmd);
|
|
if (!hdr)
|
|
return -ENOBUFS;
|
|
|
|
if (nla_put_u32(msg, BATADV_ATTR_MESH_IFINDEX,
|
|
bat_priv->soft_iface->ifindex))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u32(msg, BATADV_ATTR_VLANID, vlan->vid & VLAN_VID_MASK))
|
|
goto nla_put_failure;
|
|
|
|
if (nla_put_u8(msg, BATADV_ATTR_AP_ISOLATION_ENABLED,
|
|
!!atomic_read(&vlan->ap_isolation)))
|
|
goto nla_put_failure;
|
|
|
|
genlmsg_end(msg, hdr);
|
|
return 0;
|
|
|
|
nla_put_failure:
|
|
genlmsg_cancel(msg, hdr);
|
|
return -EMSGSIZE;
|
|
}
|
|
|
|
/**
|
|
* batadv_netlink_notify_vlan() - send vlan attributes to listener
|
|
* @bat_priv: the bat priv with all the soft interface information
|
|
* @vlan: vlan which was modified
|
|
*
|
|
* Return: 0 on success, < 0 on error
|
|
*/
|
|
int batadv_netlink_notify_vlan(struct batadv_priv *bat_priv,
|
|
struct batadv_softif_vlan *vlan)
|
|
{
|
|
struct sk_buff *msg;
|
|
int ret;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
ret = batadv_netlink_vlan_fill(msg, bat_priv, vlan,
|
|
BATADV_CMD_SET_VLAN, 0, 0, 0);
|
|
if (ret < 0) {
|
|
nlmsg_free(msg);
|
|
return ret;
|
|
}
|
|
|
|
genlmsg_multicast_netns(&batadv_netlink_family,
|
|
dev_net(bat_priv->soft_iface), msg, 0,
|
|
BATADV_NL_MCGRP_CONFIG, GFP_KERNEL);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* batadv_netlink_get_vlan() - Get vlan attributes
|
|
* @skb: Netlink message with request data
|
|
* @info: receiver information
|
|
*
|
|
* Return: 0 on success or negative error number in case of failure
|
|
*/
|
|
static int batadv_netlink_get_vlan(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct batadv_softif_vlan *vlan = info->user_ptr[1];
|
|
struct batadv_priv *bat_priv = info->user_ptr[0];
|
|
struct sk_buff *msg;
|
|
int ret;
|
|
|
|
msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
|
|
if (!msg)
|
|
return -ENOMEM;
|
|
|
|
ret = batadv_netlink_vlan_fill(msg, bat_priv, vlan, BATADV_CMD_GET_VLAN,
|
|
info->snd_portid, info->snd_seq, 0);
|
|
if (ret < 0) {
|
|
nlmsg_free(msg);
|
|
return ret;
|
|
}
|
|
|
|
ret = genlmsg_reply(msg, info);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* batadv_netlink_set_vlan() - Get vlan attributes
|
|
* @skb: Netlink message with request data
|
|
* @info: receiver information
|
|
*
|
|
* Return: 0 on success or negative error number in case of failure
|
|
*/
|
|
static int batadv_netlink_set_vlan(struct sk_buff *skb, struct genl_info *info)
|
|
{
|
|
struct batadv_softif_vlan *vlan = info->user_ptr[1];
|
|
struct batadv_priv *bat_priv = info->user_ptr[0];
|
|
struct nlattr *attr;
|
|
|
|
if (info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED]) {
|
|
attr = info->attrs[BATADV_ATTR_AP_ISOLATION_ENABLED];
|
|
|
|
atomic_set(&vlan->ap_isolation, !!nla_get_u8(attr));
|
|
}
|
|
|
|
batadv_netlink_notify_vlan(bat_priv, vlan);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* batadv_get_softif_from_info() - Retrieve soft interface from genl attributes
|
|
* @net: the applicable net namespace
|
|
* @info: receiver information
|
|
*
|
|
* Return: Pointer to soft interface (with increased refcnt) on success, error
|
|
* pointer on error
|
|
*/
|
|
static struct net_device *
|
|
batadv_get_softif_from_info(struct net *net, struct genl_info *info)
|
|
{
|
|
struct net_device *soft_iface;
|
|
int ifindex;
|
|
|
|
if (!info->attrs[BATADV_ATTR_MESH_IFINDEX])
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
ifindex = nla_get_u32(info->attrs[BATADV_ATTR_MESH_IFINDEX]);
|
|
|
|
soft_iface = dev_get_by_index(net, ifindex);
|
|
if (!soft_iface)
|
|
return ERR_PTR(-ENODEV);
|
|
|
|
if (!batadv_softif_is_valid(soft_iface))
|
|
goto err_put_softif;
|
|
|
|
return soft_iface;
|
|
|
|
err_put_softif:
|
|
dev_put(soft_iface);
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
/**
|
|
* batadv_get_hardif_from_info() - Retrieve hardif from genl attributes
|
|
* @bat_priv: the bat priv with all the soft interface information
|
|
* @net: the applicable net namespace
|
|
* @info: receiver information
|
|
*
|
|
* Return: Pointer to hard interface (with increased refcnt) on success, error
|
|
* pointer on error
|
|
*/
|
|
static struct batadv_hard_iface *
|
|
batadv_get_hardif_from_info(struct batadv_priv *bat_priv, struct net *net,
|
|
struct genl_info *info)
|
|
{
|
|
struct batadv_hard_iface *hard_iface;
|
|
struct net_device *hard_dev;
|
|
unsigned int hardif_index;
|
|
|
|
if (!info->attrs[BATADV_ATTR_HARD_IFINDEX])
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
hardif_index = nla_get_u32(info->attrs[BATADV_ATTR_HARD_IFINDEX]);
|
|
|
|
hard_dev = dev_get_by_index(net, hardif_index);
|
|
if (!hard_dev)
|
|
return ERR_PTR(-ENODEV);
|
|
|
|
hard_iface = batadv_hardif_get_by_netdev(hard_dev);
|
|
if (!hard_iface)
|
|
goto err_put_harddev;
|
|
|
|
if (hard_iface->soft_iface != bat_priv->soft_iface)
|
|
goto err_put_hardif;
|
|
|
|
/* hard_dev is referenced by hard_iface and not needed here */
|
|
dev_put(hard_dev);
|
|
|
|
return hard_iface;
|
|
|
|
err_put_hardif:
|
|
batadv_hardif_put(hard_iface);
|
|
err_put_harddev:
|
|
dev_put(hard_dev);
|
|
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
/**
|
|
* batadv_get_vlan_from_info() - Retrieve vlan from genl attributes
|
|
* @bat_priv: the bat priv with all the soft interface information
|
|
* @net: the applicable net namespace
|
|
* @info: receiver information
|
|
*
|
|
* Return: Pointer to vlan on success (with increased refcnt), error pointer
|
|
* on error
|
|
*/
|
|
static struct batadv_softif_vlan *
|
|
batadv_get_vlan_from_info(struct batadv_priv *bat_priv, struct net *net,
|
|
struct genl_info *info)
|
|
{
|
|
struct batadv_softif_vlan *vlan;
|
|
u16 vid;
|
|
|
|
if (!info->attrs[BATADV_ATTR_VLANID])
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
vid = nla_get_u16(info->attrs[BATADV_ATTR_VLANID]);
|
|
|
|
vlan = batadv_softif_vlan_get(bat_priv, vid | BATADV_VLAN_HAS_TAG);
|
|
if (!vlan)
|
|
return ERR_PTR(-ENOENT);
|
|
|
|
return vlan;
|
|
}
|
|
|
|
/**
|
|
* batadv_pre_doit() - Prepare batman-adv genl doit request
|
|
* @ops: requested netlink operation
|
|
* @skb: Netlink message with request data
|
|
* @info: receiver information
|
|
*
|
|
* Return: 0 on success or negative error number in case of failure
|
|
*/
|
|
static int batadv_pre_doit(const struct genl_ops *ops, struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct net *net = genl_info_net(info);
|
|
struct batadv_hard_iface *hard_iface;
|
|
struct batadv_priv *bat_priv = NULL;
|
|
struct batadv_softif_vlan *vlan;
|
|
struct net_device *soft_iface;
|
|
u8 user_ptr1_flags;
|
|
u8 mesh_dep_flags;
|
|
int ret;
|
|
|
|
user_ptr1_flags = BATADV_FLAG_NEED_HARDIF | BATADV_FLAG_NEED_VLAN;
|
|
if (WARN_ON(hweight8(ops->internal_flags & user_ptr1_flags) > 1))
|
|
return -EINVAL;
|
|
|
|
mesh_dep_flags = BATADV_FLAG_NEED_HARDIF | BATADV_FLAG_NEED_VLAN;
|
|
if (WARN_ON((ops->internal_flags & mesh_dep_flags) &&
|
|
(~ops->internal_flags & BATADV_FLAG_NEED_MESH)))
|
|
return -EINVAL;
|
|
|
|
if (ops->internal_flags & BATADV_FLAG_NEED_MESH) {
|
|
soft_iface = batadv_get_softif_from_info(net, info);
|
|
if (IS_ERR(soft_iface))
|
|
return PTR_ERR(soft_iface);
|
|
|
|
bat_priv = netdev_priv(soft_iface);
|
|
info->user_ptr[0] = bat_priv;
|
|
}
|
|
|
|
if (ops->internal_flags & BATADV_FLAG_NEED_HARDIF) {
|
|
hard_iface = batadv_get_hardif_from_info(bat_priv, net, info);
|
|
if (IS_ERR(hard_iface)) {
|
|
ret = PTR_ERR(hard_iface);
|
|
goto err_put_softif;
|
|
}
|
|
|
|
info->user_ptr[1] = hard_iface;
|
|
}
|
|
|
|
if (ops->internal_flags & BATADV_FLAG_NEED_VLAN) {
|
|
vlan = batadv_get_vlan_from_info(bat_priv, net, info);
|
|
if (IS_ERR(vlan)) {
|
|
ret = PTR_ERR(vlan);
|
|
goto err_put_softif;
|
|
}
|
|
|
|
info->user_ptr[1] = vlan;
|
|
}
|
|
|
|
return 0;
|
|
|
|
err_put_softif:
|
|
if (bat_priv)
|
|
dev_put(bat_priv->soft_iface);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* batadv_post_doit() - End batman-adv genl doit request
|
|
* @ops: requested netlink operation
|
|
* @skb: Netlink message with request data
|
|
* @info: receiver information
|
|
*/
|
|
static void batadv_post_doit(const struct genl_ops *ops, struct sk_buff *skb,
|
|
struct genl_info *info)
|
|
{
|
|
struct batadv_hard_iface *hard_iface;
|
|
struct batadv_softif_vlan *vlan;
|
|
struct batadv_priv *bat_priv;
|
|
|
|
if (ops->internal_flags & BATADV_FLAG_NEED_HARDIF &&
|
|
info->user_ptr[1]) {
|
|
hard_iface = info->user_ptr[1];
|
|
|
|
batadv_hardif_put(hard_iface);
|
|
}
|
|
|
|
if (ops->internal_flags & BATADV_FLAG_NEED_VLAN && info->user_ptr[1]) {
|
|
vlan = info->user_ptr[1];
|
|
batadv_softif_vlan_put(vlan);
|
|
}
|
|
|
|
if (ops->internal_flags & BATADV_FLAG_NEED_MESH && info->user_ptr[0]) {
|
|
bat_priv = info->user_ptr[0];
|
|
dev_put(bat_priv->soft_iface);
|
|
}
|
|
}
|
|
|
|
static const struct genl_ops batadv_netlink_ops[] = {
|
|
{
|
|
.cmd = BATADV_CMD_GET_MESH,
|
|
/* can be retrieved by unprivileged users */
|
|
.policy = batadv_netlink_policy,
|
|
.doit = batadv_netlink_get_mesh,
|
|
.internal_flags = BATADV_FLAG_NEED_MESH,
|
|
},
|
|
{
|
|
.cmd = BATADV_CMD_TP_METER,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.policy = batadv_netlink_policy,
|
|
.doit = batadv_netlink_tp_meter_start,
|
|
.internal_flags = BATADV_FLAG_NEED_MESH,
|
|
},
|
|
{
|
|
.cmd = BATADV_CMD_TP_METER_CANCEL,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.policy = batadv_netlink_policy,
|
|
.doit = batadv_netlink_tp_meter_cancel,
|
|
.internal_flags = BATADV_FLAG_NEED_MESH,
|
|
},
|
|
{
|
|
.cmd = BATADV_CMD_GET_ROUTING_ALGOS,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.policy = batadv_netlink_policy,
|
|
.dumpit = batadv_algo_dump,
|
|
},
|
|
{
|
|
.cmd = BATADV_CMD_GET_HARDIF,
|
|
/* can be retrieved by unprivileged users */
|
|
.policy = batadv_netlink_policy,
|
|
.dumpit = batadv_netlink_dump_hardif,
|
|
.doit = batadv_netlink_get_hardif,
|
|
.internal_flags = BATADV_FLAG_NEED_MESH |
|
|
BATADV_FLAG_NEED_HARDIF,
|
|
},
|
|
{
|
|
.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,
|
|
},
|
|
{
|
|
.cmd = BATADV_CMD_SET_MESH,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.policy = batadv_netlink_policy,
|
|
.doit = batadv_netlink_set_mesh,
|
|
.internal_flags = BATADV_FLAG_NEED_MESH,
|
|
},
|
|
{
|
|
.cmd = BATADV_CMD_SET_HARDIF,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.policy = batadv_netlink_policy,
|
|
.doit = batadv_netlink_set_hardif,
|
|
.internal_flags = BATADV_FLAG_NEED_MESH |
|
|
BATADV_FLAG_NEED_HARDIF,
|
|
},
|
|
{
|
|
.cmd = BATADV_CMD_GET_VLAN,
|
|
/* can be retrieved by unprivileged users */
|
|
.policy = batadv_netlink_policy,
|
|
.doit = batadv_netlink_get_vlan,
|
|
.internal_flags = BATADV_FLAG_NEED_MESH |
|
|
BATADV_FLAG_NEED_VLAN,
|
|
},
|
|
{
|
|
.cmd = BATADV_CMD_SET_VLAN,
|
|
.flags = GENL_ADMIN_PERM,
|
|
.policy = batadv_netlink_policy,
|
|
.doit = batadv_netlink_set_vlan,
|
|
.internal_flags = BATADV_FLAG_NEED_MESH |
|
|
BATADV_FLAG_NEED_VLAN,
|
|
},
|
|
};
|
|
|
|
struct genl_family batadv_netlink_family __ro_after_init = {
|
|
.hdrsize = 0,
|
|
.name = BATADV_NL_NAME,
|
|
.version = 1,
|
|
.maxattr = BATADV_ATTR_MAX,
|
|
.netnsok = true,
|
|
.pre_doit = batadv_pre_doit,
|
|
.post_doit = batadv_post_doit,
|
|
.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);
|
|
}
|