136 lines
4.0 KiB
C
136 lines
4.0 KiB
C
/*
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* net/tipc/addr.h: Include file for TIPC address utility routines
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*
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* Copyright (c) 2000-2006, 2018, Ericsson AB
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* Copyright (c) 2004-2005, Wind River Systems
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* Copyright (c) 2020-2021, Red Hat Inc
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the names of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _TIPC_ADDR_H
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#define _TIPC_ADDR_H
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#include <linux/types.h>
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#include <linux/tipc.h>
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#include <net/net_namespace.h>
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#include <net/netns/generic.h>
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#include "core.h"
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/* Struct tipc_uaddr: internal version of struct sockaddr_tipc.
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* Must be kept aligned both regarding field positions and size.
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*/
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struct tipc_uaddr {
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unsigned short family;
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unsigned char addrtype;
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signed char scope;
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union {
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struct {
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struct tipc_service_addr sa;
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u32 lookup_node;
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};
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struct tipc_service_range sr;
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struct tipc_socket_addr sk;
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};
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};
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static inline void tipc_uaddr(struct tipc_uaddr *ua, u32 atype, u32 scope,
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u32 type, u32 lower, u32 upper)
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{
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ua->family = AF_TIPC;
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ua->addrtype = atype;
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ua->scope = scope;
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ua->sr.type = type;
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ua->sr.lower = lower;
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ua->sr.upper = upper;
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}
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static inline bool tipc_uaddr_valid(struct tipc_uaddr *ua, int len)
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{
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u32 atype;
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if (len < sizeof(struct sockaddr_tipc))
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return false;
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atype = ua->addrtype;
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if (ua->family != AF_TIPC)
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return false;
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if (atype == TIPC_SERVICE_ADDR || atype == TIPC_SOCKET_ADDR)
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return true;
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if (atype == TIPC_SERVICE_RANGE)
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return ua->sr.upper >= ua->sr.lower;
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return false;
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}
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static inline u32 tipc_own_addr(struct net *net)
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{
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return tipc_net(net)->node_addr;
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}
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static inline u8 *tipc_own_id(struct net *net)
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{
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struct tipc_net *tn = tipc_net(net);
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if (!strlen(tn->node_id_string))
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return NULL;
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return tn->node_id;
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}
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static inline char *tipc_own_id_string(struct net *net)
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{
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return tipc_net(net)->node_id_string;
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}
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static inline u32 tipc_cluster_mask(u32 addr)
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{
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return addr & TIPC_ZONE_CLUSTER_MASK;
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}
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static inline int tipc_node2scope(u32 node)
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{
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return node ? TIPC_NODE_SCOPE : TIPC_CLUSTER_SCOPE;
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}
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static inline int tipc_scope2node(struct net *net, int sc)
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{
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return sc != TIPC_NODE_SCOPE ? 0 : tipc_own_addr(net);
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}
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static inline int in_own_node(struct net *net, u32 addr)
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{
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return addr == tipc_own_addr(net) || !addr;
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}
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bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr);
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void tipc_set_node_id(struct net *net, u8 *id);
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void tipc_set_node_addr(struct net *net, u32 addr);
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char *tipc_nodeid2string(char *str, u8 *id);
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#endif
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