/* * net/tipc/addr.h: Include file for TIPC address utility routines * * Copyright (c) 2000-2006, 2018, Ericsson AB * Copyright (c) 2004-2005, Wind River Systems * Copyright (c) 2020-2021, Red Hat Inc * 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 _TIPC_ADDR_H#define _TIPC_ADDR_H #include <linux/types.h>#include <linux/tipc.h>#include <net/net_namespace.h>#include <net/netns/generic.h>#include "core.h" /* Struct tipc_uaddr: internal version of struct sockaddr_tipc. * Must be kept aligned both regarding field positions and size. */struct tipc_uaddr {	unsigned short family;	unsigned char addrtype;	signed char scope;	union {		struct {			struct tipc_service_addr sa;			u32 lookup_node;		};		struct tipc_service_range sr;		struct tipc_socket_addr sk;	};}; static inline void tipc_uaddr(struct tipc_uaddr *ua, u32 atype, u32 scope,			      u32 type, u32 lower, u32 upper){	ua->family = AF_TIPC;	ua->addrtype = atype;	ua->scope = scope;	ua->sr.type = type;	ua->sr.lower = lower;	ua->sr.upper = upper;} static inline bool tipc_uaddr_valid(struct tipc_uaddr *ua, int len){	u32 atype; 	if (len < sizeof(struct sockaddr_tipc))		return false;	atype = ua->addrtype;	if (ua->family != AF_TIPC)		return false;	if (atype == TIPC_SERVICE_ADDR || atype == TIPC_SOCKET_ADDR)		return true;	if (atype == TIPC_SERVICE_RANGE)		return ua->sr.upper >= ua->sr.lower;	return false;} static inline u32 tipc_own_addr(struct net *net){	return tipc_net(net)->node_addr;} static inline u8 *tipc_own_id(struct net *net){	struct tipc_net *tn = tipc_net(net); 	if (!strlen(tn->node_id_string))		return NULL;	return tn->node_id;} static inline char *tipc_own_id_string(struct net *net){	return tipc_net(net)->node_id_string;} static inline u32 tipc_cluster_mask(u32 addr){	return addr & TIPC_ZONE_CLUSTER_MASK;} static inline int tipc_node2scope(u32 node){	return node ? TIPC_NODE_SCOPE : TIPC_CLUSTER_SCOPE;} static inline int tipc_scope2node(struct net *net, int sc){	return sc != TIPC_NODE_SCOPE ? 0 : tipc_own_addr(net);} static inline int in_own_node(struct net *net, u32 addr){	return addr == tipc_own_addr(net) || !addr;} bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr);void tipc_set_node_id(struct net *net, u8 *id);void tipc_set_node_addr(struct net *net, u32 addr);int tipc_nodeid2string(char *str, u8 *id); #endif