1 files changed, 296 insertions, 0 deletions
diff --git a/net/tipc/netlink.c b/net/tipc/netlink.c
new file mode 100644
index 000000000..9b36163d9
--- /dev/null
+++ b/net/tipc/netlink.c
@@ -0,0 +1,296 @@
+/*
+ * 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_policy
+tipc_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 },
+};
+
+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_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 }
+};
+
+/* Properties valid for media, bearer and link */
+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]		= { .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_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,
+		.doit	= tipc_nl_bearer_disable,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_BEARER_ENABLE,
+		.doit	= tipc_nl_bearer_enable,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_BEARER_GET,
+		.doit	= tipc_nl_bearer_get,
+		.dumpit	= tipc_nl_bearer_dump,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_BEARER_ADD,
+		.doit	= tipc_nl_bearer_add,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_BEARER_SET,
+		.doit	= tipc_nl_bearer_set,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_SOCK_GET,
+		.start = tipc_dump_start,
+		.dumpit	= tipc_nl_sk_dump,
+		.done	= tipc_dump_done,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_PUBL_GET,
+		.dumpit	= tipc_nl_publ_dump,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_LINK_GET,
+		.doit   = tipc_nl_node_get_link,
+		.dumpit	= tipc_nl_node_dump_link,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_LINK_SET,
+		.doit	= tipc_nl_node_set_link,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_LINK_RESET_STATS,
+		.doit   = tipc_nl_node_reset_link_stats,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_MEDIA_GET,
+		.doit	= tipc_nl_media_get,
+		.dumpit	= tipc_nl_media_dump,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_MEDIA_SET,
+		.doit	= tipc_nl_media_set,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_NODE_GET,
+		.dumpit	= tipc_nl_node_dump,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_NET_GET,
+		.dumpit	= tipc_nl_net_dump,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_NET_SET,
+		.doit	= tipc_nl_net_set,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_NAME_TABLE_GET,
+		.dumpit	= tipc_nl_name_table_dump,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_MON_SET,
+		.doit	= tipc_nl_node_set_monitor,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_MON_GET,
+		.doit	= tipc_nl_node_get_monitor,
+		.dumpit	= tipc_nl_node_dump_monitor,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_MON_PEER_GET,
+		.dumpit	= tipc_nl_node_dump_monitor_peer,
+		.policy = tipc_nl_policy,
+	},
+	{
+		.cmd	= TIPC_NL_PEER_REMOVE,
+		.doit	= tipc_nl_peer_rm,
+		.policy = tipc_nl_policy,
+	},
+#ifdef CONFIG_TIPC_MEDIA_UDP
+	{
+		.cmd	= TIPC_NL_UDP_GET_REMOTEIP,
+		.dumpit	= tipc_udp_nl_dump_remoteip,
+		.policy = tipc_nl_policy,
+	},
+#endif
+};
+
+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,
+	.netnsok	= true,
+	.module		= THIS_MODULE,
+	.ops		= tipc_genl_v2_ops,
+	.n_ops		= ARRAY_SIZE(tipc_genl_v2_ops),
+};
+
+int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr)
+{
+	u32 maxattr = tipc_genl_family.maxattr;
+
+	*attr = genl_family_attrbuf(&tipc_genl_family);
+	if (!*attr)
+		return -EOPNOTSUPP;
+
+	return nlmsg_parse(nlh, GENL_HDRLEN, *attr, maxattr, tipc_nl_policy,
+			   NULL);
+}
+
+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);
+}