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/*
* 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);
char *tipc_nodeid2string(char *str, u8 *id);
#endif
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