v4.19.13 snapshot.
diff --git a/include/uapi/linux/tipc.h b/include/uapi/linux/tipc.h
new file mode 100644
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+++ b/include/uapi/linux/tipc.h
@@ -0,0 +1,290 @@
+/* SPDX-License-Identifier: ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause) */
+/*
+ * include/uapi/linux/tipc.h: Header for TIPC socket interface
+ *
+ * Copyright (c) 2003-2006, 2015-2016 Ericsson AB
+ * Copyright (c) 2005, 2010-2011, 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.
+ */
+
+#ifndef _LINUX_TIPC_H_
+#define _LINUX_TIPC_H_
+
+#include <linux/types.h>
+#include <linux/sockios.h>
+
+/*
+ * TIPC addressing primitives
+ */
+
+struct tipc_socket_addr {
+ __u32 ref;
+ __u32 node;
+};
+
+struct tipc_service_addr {
+ __u32 type;
+ __u32 instance;
+};
+
+struct tipc_service_range {
+ __u32 type;
+ __u32 lower;
+ __u32 upper;
+};
+
+/*
+ * Application-accessible service types
+ */
+
+#define TIPC_NODE_STATE 0 /* node state service type */
+#define TIPC_TOP_SRV 1 /* topology server service type */
+#define TIPC_LINK_STATE 2 /* link state service type */
+#define TIPC_RESERVED_TYPES 64 /* lowest user-allowed service type */
+
+/*
+ * Publication scopes when binding service / service range
+ */
+enum tipc_scope {
+ TIPC_CLUSTER_SCOPE = 2, /* 0 can also be used */
+ TIPC_NODE_SCOPE = 3
+};
+
+/*
+ * Limiting values for messages
+ */
+
+#define TIPC_MAX_USER_MSG_SIZE 66000U
+
+/*
+ * Message importance levels
+ */
+
+#define TIPC_LOW_IMPORTANCE 0
+#define TIPC_MEDIUM_IMPORTANCE 1
+#define TIPC_HIGH_IMPORTANCE 2
+#define TIPC_CRITICAL_IMPORTANCE 3
+
+/*
+ * Msg rejection/connection shutdown reasons
+ */
+
+#define TIPC_OK 0
+#define TIPC_ERR_NO_NAME 1
+#define TIPC_ERR_NO_PORT 2
+#define TIPC_ERR_NO_NODE 3
+#define TIPC_ERR_OVERLOAD 4
+#define TIPC_CONN_SHUTDOWN 5
+
+/*
+ * TIPC topology subscription service definitions
+ */
+
+#define TIPC_SUB_PORTS 0x01 /* filter: evt at each match */
+#define TIPC_SUB_SERVICE 0x02 /* filter: evt at first up/last down */
+#define TIPC_SUB_CANCEL 0x04 /* filter: cancel a subscription */
+
+#define TIPC_WAIT_FOREVER (~0) /* timeout for permanent subscription */
+
+struct tipc_subscr {
+ struct tipc_service_range seq; /* range of interest */
+ __u32 timeout; /* subscription duration (in ms) */
+ __u32 filter; /* bitmask of filter options */
+ char usr_handle[8]; /* available for subscriber use */
+};
+
+#define TIPC_PUBLISHED 1 /* publication event */
+#define TIPC_WITHDRAWN 2 /* withdrawal event */
+#define TIPC_SUBSCR_TIMEOUT 3 /* subscription timeout event */
+
+struct tipc_event {
+ __u32 event; /* event type */
+ __u32 found_lower; /* matching range */
+ __u32 found_upper; /* " " */
+ struct tipc_socket_addr port; /* associated socket */
+ struct tipc_subscr s; /* associated subscription */
+};
+
+/*
+ * Socket API
+ */
+
+#ifndef AF_TIPC
+#define AF_TIPC 30
+#endif
+
+#ifndef PF_TIPC
+#define PF_TIPC AF_TIPC
+#endif
+
+#ifndef SOL_TIPC
+#define SOL_TIPC 271
+#endif
+
+#define TIPC_ADDR_MCAST 1
+#define TIPC_SERVICE_RANGE 1
+#define TIPC_SERVICE_ADDR 2
+#define TIPC_SOCKET_ADDR 3
+
+struct sockaddr_tipc {
+ unsigned short family;
+ unsigned char addrtype;
+ signed char scope;
+ union {
+ struct tipc_socket_addr id;
+ struct tipc_service_range nameseq;
+ struct {
+ struct tipc_service_addr name;
+ __u32 domain;
+ } name;
+ } addr;
+};
+
+/*
+ * Ancillary data objects supported by recvmsg()
+ */
+
+#define TIPC_ERRINFO 1 /* error info */
+#define TIPC_RETDATA 2 /* returned data */
+#define TIPC_DESTNAME 3 /* destination name */
+
+/*
+ * TIPC-specific socket option names
+ */
+
+#define TIPC_IMPORTANCE 127 /* Default: TIPC_LOW_IMPORTANCE */
+#define TIPC_SRC_DROPPABLE 128 /* Default: based on socket type */
+#define TIPC_DEST_DROPPABLE 129 /* Default: based on socket type */
+#define TIPC_CONN_TIMEOUT 130 /* Default: 8000 (ms) */
+#define TIPC_NODE_RECVQ_DEPTH 131 /* Default: none (read only) */
+#define TIPC_SOCK_RECVQ_DEPTH 132 /* Default: none (read only) */
+#define TIPC_MCAST_BROADCAST 133 /* Default: TIPC selects. No arg */
+#define TIPC_MCAST_REPLICAST 134 /* Default: TIPC selects. No arg */
+#define TIPC_GROUP_JOIN 135 /* Takes struct tipc_group_req* */
+#define TIPC_GROUP_LEAVE 136 /* No argument */
+
+/*
+ * Flag values
+ */
+#define TIPC_GROUP_LOOPBACK 0x1 /* Receive copy of sent msg when match */
+#define TIPC_GROUP_MEMBER_EVTS 0x2 /* Receive membership events in socket */
+
+struct tipc_group_req {
+ __u32 type; /* group id */
+ __u32 instance; /* member id */
+ __u32 scope; /* cluster/node */
+ __u32 flags;
+};
+
+/*
+ * Maximum sizes of TIPC bearer-related names (including terminating NULL)
+ * The string formatting for each name element is:
+ * media: media
+ * interface: media:interface name
+ * link: node:interface-node:interface
+ */
+#define TIPC_NODEID_LEN 16
+#define TIPC_MAX_MEDIA_NAME 16
+#define TIPC_MAX_IF_NAME 16
+#define TIPC_MAX_BEARER_NAME 32
+#define TIPC_MAX_LINK_NAME 68
+
+#define SIOCGETLINKNAME SIOCPROTOPRIVATE
+#define SIOCGETNODEID (SIOCPROTOPRIVATE + 1)
+
+struct tipc_sioc_ln_req {
+ __u32 peer;
+ __u32 bearer_id;
+ char linkname[TIPC_MAX_LINK_NAME];
+};
+
+struct tipc_sioc_nodeid_req {
+ __u32 peer;
+ char node_id[TIPC_NODEID_LEN];
+};
+
+/* The macros and functions below are deprecated:
+ */
+
+#define TIPC_CFG_SRV 0
+#define TIPC_ZONE_SCOPE 1
+
+#define TIPC_ADDR_NAMESEQ 1
+#define TIPC_ADDR_NAME 2
+#define TIPC_ADDR_ID 3
+
+#define TIPC_NODE_BITS 12
+#define TIPC_CLUSTER_BITS 12
+#define TIPC_ZONE_BITS 8
+
+#define TIPC_NODE_OFFSET 0
+#define TIPC_CLUSTER_OFFSET TIPC_NODE_BITS
+#define TIPC_ZONE_OFFSET (TIPC_CLUSTER_OFFSET + TIPC_CLUSTER_BITS)
+
+#define TIPC_NODE_SIZE ((1UL << TIPC_NODE_BITS) - 1)
+#define TIPC_CLUSTER_SIZE ((1UL << TIPC_CLUSTER_BITS) - 1)
+#define TIPC_ZONE_SIZE ((1UL << TIPC_ZONE_BITS) - 1)
+
+#define TIPC_NODE_MASK (TIPC_NODE_SIZE << TIPC_NODE_OFFSET)
+#define TIPC_CLUSTER_MASK (TIPC_CLUSTER_SIZE << TIPC_CLUSTER_OFFSET)
+#define TIPC_ZONE_MASK (TIPC_ZONE_SIZE << TIPC_ZONE_OFFSET)
+
+#define TIPC_ZONE_CLUSTER_MASK (TIPC_ZONE_MASK | TIPC_CLUSTER_MASK)
+
+#define tipc_portid tipc_socket_addr
+#define tipc_name tipc_service_addr
+#define tipc_name_seq tipc_service_range
+
+static inline __u32 tipc_addr(unsigned int zone,
+ unsigned int cluster,
+ unsigned int node)
+{
+ return (zone << TIPC_ZONE_OFFSET) |
+ (cluster << TIPC_CLUSTER_OFFSET) |
+ node;
+}
+
+static inline unsigned int tipc_zone(__u32 addr)
+{
+ return addr >> TIPC_ZONE_OFFSET;
+}
+
+static inline unsigned int tipc_cluster(__u32 addr)
+{
+ return (addr & TIPC_CLUSTER_MASK) >> TIPC_CLUSTER_OFFSET;
+}
+
+static inline unsigned int tipc_node(__u32 addr)
+{
+ return addr & TIPC_NODE_MASK;
+}
+
+#endif