corosync  2.4.5
totemip.h
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1 /*
2  * Copyright (c) 2005-2010 Red Hat, Inc.
3  *
4  * All rights reserved.
5  *
6  * Author: Patrick Caulfield (pcaulfie@redhat.com)
7  *
8  * This software licensed under BSD license, the text of which follows:
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions are met:
12  *
13  * - Redistributions of source code must retain the above copyright notice,
14  * this list of conditions and the following disclaimer.
15  * - Redistributions in binary form must reproduce the above copyright notice,
16  * this list of conditions and the following disclaimer in the documentation
17  * and/or other materials provided with the distribution.
18  * - Neither the name of the MontaVista Software, Inc. nor the names of its
19  * contributors may be used to endorse or promote products derived from this
20  * software without specific prior written permission.
21  *
22  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
23  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
26  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
27  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
28  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
29  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
30  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
31  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
32  * THE POSSIBILITY OF SUCH DAMAGE.
33  */
34 
35 /* IPv4/6 abstraction */
36 
37 #ifndef TOTEMIP_H_DEFINED
38 #define TOTEMIP_H_DEFINED
39 
40 #include <sys/types.h>
41 #include <sys/socket.h>
42 #include <netinet/in.h>
43 #include <stdint.h>
44 #include <corosync/list.h>
45 
46 #ifdef __cplusplus
47 extern "C" {
48 #endif
49 
50 #ifdef SO_NOSIGPIPE
51 #ifndef MSG_NOSIGNAL
52 #define MSG_NOSIGNAL 0
53 #endif
54 void totemip_nosigpipe(int s);
55 #else
56 #define totemip_nosigpipe(s)
57 #endif
58 
59 #define TOTEMIP_ADDRLEN (sizeof(struct in6_addr))
60 
61 /* These are the things that get passed around */
62 #define TOTEM_IP_ADDRESS
63 struct totem_ip_address
64 {
65  unsigned int nodeid;
66  unsigned short family;
67  unsigned char addr[TOTEMIP_ADDRLEN];
68 } __attribute__((packed));
69 
71 {
76  char *name;
77  struct list_head list;
78 };
79 
80 extern int totemip_equal(const struct totem_ip_address *addr1,
81  const struct totem_ip_address *addr2);
82 extern int totemip_sa_equal(const struct totem_ip_address *totem_ip,
83  const struct sockaddr *sa);
84 extern int totemip_compare(const void *a, const void *b);
85 extern int totemip_is_mcast(struct totem_ip_address *addr);
86 extern void totemip_copy(struct totem_ip_address *addr1,
87  const struct totem_ip_address *addr2);
88 extern void totemip_copy_endian_convert(struct totem_ip_address *addr1,
89  const struct totem_ip_address *addr2);
90 int totemip_localhost(int family, struct totem_ip_address *localhost);
91 extern int totemip_localhost_check(const struct totem_ip_address *addr);
92 extern const char *totemip_print(const struct totem_ip_address *addr);
93 extern const char *totemip_sa_print(const struct sockaddr *sa);
94 extern int totemip_sockaddr_to_totemip_convert(const struct sockaddr_storage *saddr,
95  struct totem_ip_address *ip_addr);
96 extern int totemip_totemip_to_sockaddr_convert(struct totem_ip_address *ip_addr,
97  uint16_t port, struct sockaddr_storage *saddr, int *addrlen);
98 extern int totemip_parse(struct totem_ip_address *totemip, const char *addr,
99  int family);
100 extern int totemip_iface_check(struct totem_ip_address *bindnet,
101  struct totem_ip_address *boundto,
102  int *interface_up,
103  int *interface_num,
104  int mask_high_bit);
105 
106 extern int totemip_getifaddrs(struct list_head *addrs);
107 
108 extern void totemip_freeifaddrs(struct list_head *addrs);
109 
110 /* These two simulate a zero in_addr by clearing the family field */
111 static inline void totemip_zero_set(struct totem_ip_address *addr)
112 {
113  addr->family = 0;
114 }
115 static inline int totemip_zero_check(const struct totem_ip_address *addr)
116 {
117  return (addr->family == 0);
118 }
119 
120 extern size_t totemip_udpip_header_size(int family);
121 
122 #ifdef __cplusplus
123 }
124 #endif
125 
126 #endif