forked from mirrors/linux
d50ccc2d39
We add a 128-bit node identity, as an alternative to the currently used 32-bit node address. For the sake of compatibility and to minimize message header changes we retain the existing 32-bit address field. When not set explicitly by the user, this field will be filled with a hash value generated from the much longer node identity, and be used as a shorthand value for the latter. We permit either the address or the identity to be set by configuration, but not both, so when the address value is set by a legacy user the corresponding 128-bit node identity is generated based on the that value. Acked-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
91 lines
3 KiB
C
91 lines
3 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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* 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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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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u32 tipc_node_id2hash(u8 *id128);
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#endif
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