/* * net/tipc/netlink.c: TIPC configuration handling * * Copyright (c) 2005-2006, 2014, Ericsson AB * Copyright (c) 2005-2007, Wind River Systems * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * 1. Redistributions of source code must retain the above copyright *    notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright *    notice, this list of conditions and the following disclaimer in the *    documentation and/or other materials provided with the distribution. * 3. Neither the names of the copyright holders nor the names of its *    contributors may be used to endorse or promote products derived from *    this software without specific prior written permission. * * Alternatively, this software may be distributed under the terms of the * GNU General Public License ("GPL") version 2 as published by the Free * Software Foundation. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include "core.h"#include "socket.h"#include "name_table.h"#include "bearer.h"#include "link.h"#include "node.h"#include "net.h"#include "udp_media.h"#include <net/genetlink.h> static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = {	[TIPC_NLA_UNSPEC]	= { .type = NLA_UNSPEC, },	[TIPC_NLA_BEARER]	= { .type = NLA_NESTED, },	[TIPC_NLA_SOCK]		= { .type = NLA_NESTED, },	[TIPC_NLA_PUBL]		= { .type = NLA_NESTED, },	[TIPC_NLA_LINK]		= { .type = NLA_NESTED, },	[TIPC_NLA_MEDIA]	= { .type = NLA_NESTED, },	[TIPC_NLA_NODE]		= { .type = NLA_NESTED, },	[TIPC_NLA_NET]		= { .type = NLA_NESTED, },	[TIPC_NLA_NAME_TABLE]	= { .type = NLA_NESTED, },	[TIPC_NLA_MON]		= { .type = NLA_NESTED, },}; const struct nla_policytipc_nl_name_table_policy[TIPC_NLA_NAME_TABLE_MAX + 1] = {	[TIPC_NLA_NAME_TABLE_UNSPEC]	= { .type = NLA_UNSPEC },	[TIPC_NLA_NAME_TABLE_PUBL]	= { .type = NLA_NESTED }}; const struct nla_policy tipc_nl_monitor_policy[TIPC_NLA_MON_MAX + 1] = {	[TIPC_NLA_MON_UNSPEC]			= { .type = NLA_UNSPEC },	[TIPC_NLA_MON_REF]			= { .type = NLA_U32 },	[TIPC_NLA_MON_ACTIVATION_THRESHOLD]	= { .type = NLA_U32 },}; const struct nla_policy tipc_nl_sock_policy[TIPC_NLA_SOCK_MAX + 1] = {	[TIPC_NLA_SOCK_UNSPEC]		= { .type = NLA_UNSPEC },	[TIPC_NLA_SOCK_ADDR]		= { .type = NLA_U32 },	[TIPC_NLA_SOCK_REF]		= { .type = NLA_U32 },	[TIPC_NLA_SOCK_CON]		= { .type = NLA_NESTED },	[TIPC_NLA_SOCK_HAS_PUBL]	= { .type = NLA_FLAG }}; const struct nla_policy tipc_nl_net_policy[TIPC_NLA_NET_MAX + 1] = {	[TIPC_NLA_NET_UNSPEC]		= { .type = NLA_UNSPEC },	[TIPC_NLA_NET_ID]		= { .type = NLA_U32 },	[TIPC_NLA_NET_ADDR]		= { .type = NLA_U32 },	[TIPC_NLA_NET_NODEID]		= { .type = NLA_U64 },	[TIPC_NLA_NET_NODEID_W1]	= { .type = NLA_U64 },	[TIPC_NLA_NET_ADDR_LEGACY]	= { .type = NLA_FLAG }}; const struct nla_policy tipc_nl_link_policy[TIPC_NLA_LINK_MAX + 1] = {	[TIPC_NLA_LINK_UNSPEC]		= { .type = NLA_UNSPEC },	[TIPC_NLA_LINK_NAME]		= { .type = NLA_NUL_STRING,					    .len = TIPC_MAX_LINK_NAME },	[TIPC_NLA_LINK_MTU]		= { .type = NLA_U32 },	[TIPC_NLA_LINK_BROADCAST]	= { .type = NLA_FLAG },	[TIPC_NLA_LINK_UP]		= { .type = NLA_FLAG },	[TIPC_NLA_LINK_ACTIVE]		= { .type = NLA_FLAG },	[TIPC_NLA_LINK_PROP]		= { .type = NLA_NESTED },	[TIPC_NLA_LINK_STATS]		= { .type = NLA_NESTED },	[TIPC_NLA_LINK_RX]		= { .type = NLA_U32 },	[TIPC_NLA_LINK_TX]		= { .type = NLA_U32 }}; const struct nla_policy tipc_nl_node_policy[TIPC_NLA_NODE_MAX + 1] = {	[TIPC_NLA_NODE_UNSPEC]		= { .type = NLA_UNSPEC },	[TIPC_NLA_NODE_ADDR]		= { .type = NLA_U32 },	[TIPC_NLA_NODE_UP]		= { .type = NLA_FLAG },	[TIPC_NLA_NODE_ID]		= { .type = NLA_BINARY,					    .len = TIPC_NODEID_LEN},	[TIPC_NLA_NODE_KEY]		= { .type = NLA_BINARY,					    .len = TIPC_AEAD_KEY_SIZE_MAX},	[TIPC_NLA_NODE_KEY_MASTER]	= { .type = NLA_FLAG },	[TIPC_NLA_NODE_REKEYING]	= { .type = NLA_U32 },}; /* Properties valid for media, bearer and link */static const struct netlink_range_validation tipc_nl_mtu_range = {	.max = U16_MAX,}; const struct nla_policy tipc_nl_prop_policy[TIPC_NLA_PROP_MAX + 1] = {	[TIPC_NLA_PROP_UNSPEC]		= { .type = NLA_UNSPEC },	[TIPC_NLA_PROP_PRIO]		= { .type = NLA_U32 },	[TIPC_NLA_PROP_TOL]		= { .type = NLA_U32 },	[TIPC_NLA_PROP_WIN]		= { .type = NLA_U32 },	[TIPC_NLA_PROP_MTU]		= NLA_POLICY_FULL_RANGE(NLA_U32, &tipc_nl_mtu_range),	[TIPC_NLA_PROP_BROADCAST]	= { .type = NLA_U32 },	[TIPC_NLA_PROP_BROADCAST_RATIO]	= { .type = NLA_U32 }}; const struct nla_policy tipc_nl_bearer_policy[TIPC_NLA_BEARER_MAX + 1]	= {	[TIPC_NLA_BEARER_UNSPEC]	= { .type = NLA_UNSPEC },	[TIPC_NLA_BEARER_NAME]		= { .type = NLA_NUL_STRING,					    .len = TIPC_MAX_BEARER_NAME },	[TIPC_NLA_BEARER_PROP]		= { .type = NLA_NESTED },	[TIPC_NLA_BEARER_DOMAIN]	= { .type = NLA_U32 }}; const struct nla_policy tipc_nl_media_policy[TIPC_NLA_MEDIA_MAX + 1] = {	[TIPC_NLA_MEDIA_UNSPEC]		= { .type = NLA_UNSPEC },	[TIPC_NLA_MEDIA_NAME]		= { .type = NLA_STRING },	[TIPC_NLA_MEDIA_PROP]		= { .type = NLA_NESTED }}; const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = {	[TIPC_NLA_UDP_UNSPEC]	= {.type = NLA_UNSPEC},	[TIPC_NLA_UDP_LOCAL]	= {.type = NLA_BINARY,				   .len = sizeof(struct sockaddr_storage)},	[TIPC_NLA_UDP_REMOTE]	= {.type = NLA_BINARY,				   .len = sizeof(struct sockaddr_storage)},}; /* Users of the legacy API (tipc-config) can't handle that we add operations, * so we have a separate genl handling for the new API. */static const struct genl_ops tipc_genl_v2_ops[] = {	{		.cmd	= TIPC_NL_BEARER_DISABLE,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit	= tipc_nl_bearer_disable,	},	{		.cmd	= TIPC_NL_BEARER_ENABLE,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit	= tipc_nl_bearer_enable,	},	{		.cmd	= TIPC_NL_BEARER_GET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.doit	= tipc_nl_bearer_get,		.dumpit	= tipc_nl_bearer_dump,	},	{		.cmd	= TIPC_NL_BEARER_ADD,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit	= tipc_nl_bearer_add,	},	{		.cmd	= TIPC_NL_BEARER_SET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit	= tipc_nl_bearer_set,	},	{		.cmd	= TIPC_NL_SOCK_GET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.start = tipc_dump_start,		.dumpit	= tipc_nl_sk_dump,		.done	= tipc_dump_done,	},	{		.cmd	= TIPC_NL_PUBL_GET,		.validate = GENL_DONT_VALIDATE_STRICT |			    GENL_DONT_VALIDATE_DUMP_STRICT,		.dumpit	= tipc_nl_publ_dump,	},	{		.cmd	= TIPC_NL_LINK_GET,		.validate = GENL_DONT_VALIDATE_STRICT,		.doit   = tipc_nl_node_get_link,		.dumpit	= tipc_nl_node_dump_link,	},	{		.cmd	= TIPC_NL_LINK_SET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit	= tipc_nl_node_set_link,	},	{		.cmd	= TIPC_NL_LINK_RESET_STATS,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit   = tipc_nl_node_reset_link_stats,	},	{		.cmd	= TIPC_NL_MEDIA_GET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.doit	= tipc_nl_media_get,		.dumpit	= tipc_nl_media_dump,	},	{		.cmd	= TIPC_NL_MEDIA_SET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit	= tipc_nl_media_set,	},	{		.cmd	= TIPC_NL_NODE_GET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.dumpit	= tipc_nl_node_dump,	},	{		.cmd	= TIPC_NL_NET_GET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.dumpit	= tipc_nl_net_dump,	},	{		.cmd	= TIPC_NL_NET_SET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit	= tipc_nl_net_set,	},	{		.cmd	= TIPC_NL_NAME_TABLE_GET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.dumpit	= tipc_nl_name_table_dump,	},	{		.cmd	= TIPC_NL_MON_SET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit	= tipc_nl_node_set_monitor,	},	{		.cmd	= TIPC_NL_MON_GET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.doit	= tipc_nl_node_get_monitor,		.dumpit	= tipc_nl_node_dump_monitor,	},	{		.cmd	= TIPC_NL_MON_PEER_GET,		.validate = GENL_DONT_VALIDATE_STRICT |			    GENL_DONT_VALIDATE_DUMP_STRICT,		.dumpit	= tipc_nl_node_dump_monitor_peer,	},	{		.cmd	= TIPC_NL_PEER_REMOVE,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit	= tipc_nl_peer_rm,	},#ifdef CONFIG_TIPC_MEDIA_UDP	{		.cmd	= TIPC_NL_UDP_GET_REMOTEIP,		.validate = GENL_DONT_VALIDATE_STRICT |			    GENL_DONT_VALIDATE_DUMP_STRICT,		.dumpit	= tipc_udp_nl_dump_remoteip,	},#endif#ifdef CONFIG_TIPC_CRYPTO	{		.cmd	= TIPC_NL_KEY_SET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit	= tipc_nl_node_set_key,	},	{		.cmd	= TIPC_NL_KEY_FLUSH,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.flags	= GENL_UNS_ADMIN_PERM,		.doit	= tipc_nl_node_flush_key,	},#endif	{		.cmd	= TIPC_NL_ADDR_LEGACY_GET,		.validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP,		.doit	= tipc_nl_net_addr_legacy_get,	},}; struct genl_family tipc_genl_family __ro_after_init = {	.name		= TIPC_GENL_V2_NAME,	.version	= TIPC_GENL_V2_VERSION,	.hdrsize	= 0,	.maxattr	= TIPC_NLA_MAX,	.policy		= tipc_nl_policy,	.netnsok	= true,	.module		= THIS_MODULE,	.ops		= tipc_genl_v2_ops,	.n_ops		= ARRAY_SIZE(tipc_genl_v2_ops),	.resv_start_op	= TIPC_NL_ADDR_LEGACY_GET + 1,}; int __init tipc_netlink_start(void){	int res; 	res = genl_register_family(&tipc_genl_family);	if (res) {		pr_err("Failed to register netlink interface\n");		return res;	}	return 0;} void tipc_netlink_stop(void){	genl_unregister_family(&tipc_genl_family);}