OpenMPI  0.1.1
if.h
1 /*
2  * Copyright (c) 2010 Cisco Systems, Inc. All rights reserved.
3  * $COPYRIGHT$
4  *
5  * Additional copyrights may follow
6  *
7  * $HEADER$
8  */
9 
10 #ifndef OPAL_MCA_IF_IF_H
11 #define OPAL_MCA_IF_IF_H
12 
13 #include "opal_config.h"
14 
15 #include <string.h>
16 #ifdef HAVE_UNISTD_H
17 #include <unistd.h>
18 #endif
19 #include <errno.h>
20 #ifdef HAVE_SYS_TYPES_H
21 #include <sys/types.h>
22 #endif
23 #ifdef HAVE_SYS_SOCKET_H
24 #include <sys/socket.h>
25 #endif
26 #ifdef HAVE_SYS_SOCKIO_H
27 #include <sys/sockio.h>
28 #endif
29 #ifdef HAVE_SYS_IOCTL_H
30 #include <sys/ioctl.h>
31 #endif
32 #ifdef HAVE_NETINET_IN_H
33 #include <netinet/in.h>
34 #endif
35 #ifdef HAVE_ARPA_INET_H
36 #include <arpa/inet.h>
37 #endif
38 #ifdef HAVE_NET_IF_H
39 #if defined(__APPLE__) && defined(_LP64)
40 /* Apple engineering suggested using options align=power as a
41  workaround for a bug in OS X 10.4 (Tiger) that prevented ioctl(...,
42  SIOCGIFCONF, ...) from working properly in 64 bit mode on Power PC.
43  It turns out that the underlying issue is the size of struct
44  ifconf, which the kernel expects to be 12 and natural 64 bit
45  alignment would make 16. The same bug appears in 64 bit mode on
46  Intel macs, but align=power is a no-op there, so instead, use the
47  pack pragma to instruct the compiler to pack on 4 byte words, which
48  has the same effect as align=power for our needs and works on both
49  Intel and Power PC Macs. */
50 #pragma pack(push,4)
51 #endif
52 #include <net/if.h>
53 #if defined(__APPLE__) && defined(_LP64)
54 #pragma pack(pop)
55 #endif
56 #endif
57 #ifdef HAVE_NETDB_H
58 #include <netdb.h>
59 #endif
60 #ifdef HAVE_IFADDRS_H
61 #include <ifaddrs.h>
62 #endif
63 
64 #include "opal/util/if.h"
65 #include "opal/mca/mca.h"
66 #include "opal/mca/base/base.h"
67 
68 BEGIN_C_DECLS
69 
70 /*
71  * Define INADDR_NONE if we don't have it. Solaris is the only system
72  * where I have found that it does not exist, and the man page for
73  * inet_addr() says that it returns -1 upon failure. On Linux and
74  * other systems with INADDR_NONE, it's just a #define to -1 anyway.
75  * So just #define it to -1 here if it doesn't already exist.
76  */
77 
78 #if !defined(INADDR_NONE)
79 #define INADDR_NONE -1
80 #endif
81 
82 #define DEFAULT_NUMBER_INTERFACES 10
83 #define MAX_IFCONF_SIZE 10 * 1024 * 1024
84 
85 
86 typedef struct opal_if_t {
87  opal_list_item_t super;
88  char if_name[IF_NAMESIZE];
89  int if_index;
90  uint16_t if_kernel_index;
91 #ifndef __WINDOWS__
92  int if_flags;
93 #else
94  u_long if_flags;
95 #endif
96  int if_speed;
97  struct sockaddr_storage if_addr;
98  uint32_t if_mask;
99 #ifdef __WINDOWS__
100  struct sockaddr_in if_bcast;
101 #endif
102  uint32_t if_bandwidth;
103 } opal_if_t;
104 OPAL_DECLSPEC OBJ_CLASS_DECLARATION(opal_if_t);
105 
106 
107 /* "global" list of available interfaces */
108 OPAL_DECLSPEC extern opal_list_t opal_if_list;
109 
110 /* global flags */
111 OPAL_DECLSPEC extern bool opal_if_do_not_resolve;
112 OPAL_DECLSPEC extern bool opal_if_retain_loopback;
113 
114 /**
115  * Structure for if components.
116  */
118  /** MCA base component */
120  /** MCA base data */
122 };
123 /**
124  * Convenience typedef
125  */
127 
128 /*
129  * Macro for use in components that are of type if
130  */
131 #define OPAL_IF_BASE_VERSION_2_0_0 \
132  MCA_BASE_VERSION_2_0_0, \
133  "if", 2, 0, 0
134 
135 END_C_DECLS
136 
137 #endif /* OPAL_MCA_IF_IF_H */
Common type for all MCA components.
Definition: mca.h:250
mca_base_component_data_t component_data
MCA base data.
Definition: if.h:121
Structure for if components.
Definition: if.h:117
mca_base_component_t component
MCA base component.
Definition: if.h:119
Top-level interface for all MCA components.
Definition: opal_list.h:98
Definition: if.h:86
Definition: util-internal.h:214
Meta data for MCA v2.0.0 components.
Definition: mca.h:309
Definition: opal_list.h:147
#define OBJ_CLASS_DECLARATION(NAME)
Declaration for class descriptor.
Definition: opal_object.h:236