| 1 | |
| 2 | * net/tipc/addr.h: Include file for TIPC address utility routines
|
| 3 | *
|
| 4 | * Copyright (c) 2000-2006, 2018, Ericsson AB
|
| 5 | * Copyright (c) 2004-2005, Wind River Systems
|
| 6 | * Copyright (c) 2020-2021, Red Hat Inc
|
| 7 | * All rights reserved.
|
| 8 | *
|
| 9 | * Redistribution and use in source and binary forms, with or without
|
| 10 | * modification, are permitted provided that the following conditions are met:
|
| 11 | *
|
| 12 | * 1. Redistributions of source code must retain the above copyright
|
| 13 | * notice, this list of conditions and the following disclaimer.
|
| 14 | * 2. Redistributions in binary form must reproduce the above copyright
|
| 15 | * notice, this list of conditions and the following disclaimer in the
|
| 16 | * documentation and/or other materials provided with the distribution.
|
| 17 | * 3. Neither the names of the copyright holders nor the names of its
|
| 18 | * contributors may be used to endorse or promote products derived from
|
| 19 | * this software without specific prior written permission.
|
| 20 | *
|
| 21 | * Alternatively, this software may be distributed under the terms of the
|
| 22 | * GNU General Public License ("GPL") version 2 as published by the Free
|
| 23 | * Software Foundation.
|
| 24 | *
|
| 25 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
| 26 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| 27 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
| 28 | * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
| 29 | * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
| 30 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
| 31 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
| 32 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
| 33 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
| 34 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
| 35 | * POSSIBILITY OF SUCH DAMAGE.
|
| 36 |
|
| 37 |
|
| 38 | #ifndef _TIPC_ADDR_H
|
| 39 | #define _TIPC_ADDR_H
|
| 40 |
|
| 41 | #include <linux/types.h>
|
| 42 | #include <linux/tipc.h>
|
| 43 | #include <net/net_namespace.h>
|
| 44 | #include <net/netns/generic.h>
|
| 45 | #include "core.h"
|
| 46 |
|
| 47 | |
| 48 | * Must be kept aligned both regarding field positions and size.
|
| 49 |
|
| 50 | struct tipc_uaddr {
|
| 51 | unsigned short family;
|
| 52 | unsigned char addrtype;
|
| 53 | signed char scope;
|
| 54 | union {
|
| 55 | struct {
|
| 56 | struct tipc_service_addr sa;
|
| 57 | u32 lookup_node;
|
| 58 | };
|
| 59 | struct tipc_service_range sr;
|
| 60 | struct tipc_socket_addr sk;
|
| 61 | };
|
| 62 | };
|
| 63 |
|
| 64 | static inline void tipc_uaddr(struct tipc_uaddr *ua, u32 atype, u32 scope,
|
| 65 | u32 type, u32 lower, u32 upper)
|
| 66 | {
|
| 67 | ua->family = AF_TIPC;
|
| 68 | ua->addrtype = atype;
|
| 69 | ua->scope = scope;
|
| 70 | ua->sr.type = type;
|
| 71 | ua->sr.lower = lower;
|
| 72 | ua->sr.upper = upper;
|
| 73 | }
|
| 74 |
|
| 75 | static inline bool tipc_uaddr_valid(struct tipc_uaddr *ua, int len)
|
| 76 | {
|
| 77 | u32 atype;
|
| 78 |
|
| 79 | if (len < sizeof(struct sockaddr_tipc))
|
| 80 | return false;
|
| 81 | atype = ua->addrtype;
|
| 82 | if (ua->family != AF_TIPC)
|
| 83 | return false;
|
| 84 | if (atype == TIPC_SERVICE_ADDR || atype == TIPC_SOCKET_ADDR)
|
| 85 | return true;
|
| 86 | if (atype == TIPC_SERVICE_RANGE)
|
| 87 | return ua->sr.upper >= ua->sr.lower;
|
| 88 | return false;
|
| 89 | }
|
| 90 |
|
| 91 | static inline u32 tipc_own_addr(struct net *net)
|
| 92 | {
|
| 93 | return tipc_net(net)->node_addr;
|
| 94 | }
|
| 95 |
|
| 96 | static inline u8 *tipc_own_id(struct net *net)
|
| 97 | {
|
| 98 | struct tipc_net *tn = tipc_net(net);
|
| 99 |
|
| 100 | if (!strlen(tn->node_id_string))
|
| 101 | return NULL;
|
| 102 | return tn->node_id;
|
| 103 | }
|
| 104 |
|
| 105 | static inline char *tipc_own_id_string(struct net *net)
|
| 106 | {
|
| 107 | return tipc_net(net)->node_id_string;
|
| 108 | }
|
| 109 |
|
| 110 | static inline u32 tipc_cluster_mask(u32 addr)
|
| 111 | {
|
| 112 | return addr & TIPC_ZONE_CLUSTER_MASK;
|
| 113 | }
|
| 114 |
|
| 115 | static inline int tipc_node2scope(u32 node)
|
| 116 | {
|
| 117 | return node ? TIPC_NODE_SCOPE : TIPC_CLUSTER_SCOPE;
|
| 118 | }
|
| 119 |
|
| 120 | static inline int tipc_scope2node(struct net *net, int sc)
|
| 121 | {
|
| 122 | return sc != TIPC_NODE_SCOPE ? 0 : tipc_own_addr(net);
|
| 123 | }
|
| 124 |
|
| 125 | static inline int in_own_node(struct net *net, u32 addr)
|
| 126 | {
|
| 127 | return addr == tipc_own_addr(net) || !addr;
|
| 128 | }
|
| 129 |
|
| 130 | bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr);
|
| 131 | void tipc_set_node_id(struct net *net, u8 *id);
|
| 132 | void tipc_set_node_addr(struct net *net, u32 addr);
|
| 133 | int tipc_nodeid2string(char *str, u8 *id);
|
| 134 |
|
| 135 | #endif
|