218 строки
6.5 KiB
C
218 строки
6.5 KiB
C
/* @file */
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/*
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* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
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* University Research and Technology
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* Corporation. All rights reserved.
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* Copyright (c) 2004-2005 The University of Tennessee and The University
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* of Tennessee Research Foundation. All rights
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* reserved.
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* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
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* University of Stuttgart. All rights reserved.
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* Copyright (c) 2004-2005 The Regents of the University of California.
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* All rights reserved.
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* $COPYRIGHT$
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*
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* Additional copyrights may follow
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*
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* $HEADER$
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*/
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#ifndef OPAL_IF_UTIL_
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#define OPAL_IF_UTIL_
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#include "opal_config.h"
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#include "opal/ipv6compat.h"
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#endif
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#if defined(c_plusplus) || defined(__cplusplus)
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extern "C" {
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#endif
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/**
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* Calculate netmask in network byte order from CIDR notation
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*
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* @param prefixlen (IN) CIDR prefixlen
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* @return netmask in network byte order
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*/
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OPAL_DECLSPEC uint32_t opal_prefix2netmask (uint32_t prefixlen);
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/**
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* Lookup an interface by name and return its primary address.
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*
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* @param if_name (IN) Interface name
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* @param if_addr (OUT) Interface address buffer
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* @param size (IN) Interface address buffer size
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*/
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OPAL_DECLSPEC int opal_ifnametoaddr(const char* if_name,
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struct sockaddr_storage* if_addr,
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int size);
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/**
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* Lookup an interface by address and return its name.
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*
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* @param if_addr (IN) Interface address (hostname or dotted-quad)
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* @param if_name (OUT) Interface name buffer
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* @param size (IN) Interface name buffer size
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*/
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OPAL_DECLSPEC int opal_ifaddrtoname(const char* if_addr,
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char* if_name, int size);
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/**
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* Lookup an interface by name and return its opal_list index.
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*
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* @param if_name (IN) Interface name
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* @return Interface opal_list index
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*/
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OPAL_DECLSPEC int opal_ifnametoindex(const char* if_name);
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/**
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* Lookup an interface by name and return its kernel index.
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*
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* @param if_name (IN) Interface name
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* @return Interface kernel index
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*/
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OPAL_DECLSPEC uint16_t opal_ifnametokindex(const char* if_name);
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/**
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* Lookup an interface by opal_list index and return its kernel index.
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*
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* @param if_name (IN) Interface opal_list index
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* @return Interface kernel index
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*/
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OPAL_DECLSPEC int opal_ifindextokindex(int if_index);
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/**
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* Returns the number of available interfaces.
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*/
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OPAL_DECLSPEC int opal_ifcount(void);
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/**
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* Returns the index of the first available interface.
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*/
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OPAL_DECLSPEC int opal_ifbegin(void);
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/**
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* Lookup the current position in the interface list by
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* index and return the next available index (if it exists).
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*
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* @param if_index Returns the next available index from the
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* current position.
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*/
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OPAL_DECLSPEC int opal_ifnext(int if_index);
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/**
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* Lookup an interface by index and return its name.
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*
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* @param if_index (IN) Interface index
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* @param if_name (OUT) Interface name buffer
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* @param size (IN) Interface name buffer size
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*/
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OPAL_DECLSPEC int opal_ifindextoname(int if_index, char* if_name, int);
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/**
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* Lookup an interface by kernel index and return its name.
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*
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* @param if_index (IN) Interface kernel index
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* @param if_name (OUT) Interface name buffer
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* @param size (IN) Interface name buffer size
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*/
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OPAL_DECLSPEC int opal_ifkindextoname(int if_kindex, char* if_name, int);
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/**
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* Lookup an interface by index and return its primary address.
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*
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* @param if_index (IN) Interface index
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* @param if_name (OUT) Interface address buffer
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* @param size (IN) Interface address buffer size
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*/
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OPAL_DECLSPEC int opal_ifindextoaddr(int if_index, struct sockaddr_storage*,
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unsigned int);
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/**
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* Lookup an interface by index and return its network mask.
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*
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* @param if_index (IN) Interface index
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* @param if_name (OUT) Interface address buffer
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* @param size (IN) Interface address buffer size
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*/
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OPAL_DECLSPEC int opal_ifindextomask(int if_index, uint32_t*, int);
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/**
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* Lookup an interface by index and return its flags.
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*
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* @param if_index (IN) Interface index
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* @param if_flags (OUT) Interface flags
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*/
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OPAL_DECLSPEC int opal_ifindextoflags(int if_index, uint32_t*);
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/**
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* Determine if given hostname / IP address is a local address
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*
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* @param hostname (IN) Hostname (or stringified IP address)
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* @return true if \c hostname is local, false otherwise
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*/
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OPAL_DECLSPEC bool opal_ifislocal(char *hostname);
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/**
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* Determine if given IP address is in the localhost range
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*
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* Determine if the given IP address is in the localhost range
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* (127.0.0.0/8), meaning that it can't be used to connect to machines
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* outside the current host.
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*
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* @param addr struct sockaddr_in of IP address
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* @return true if \c addr is a localhost address,
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* false otherwise.
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*/
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OPAL_DECLSPEC bool opal_ifislocalhost(struct sockaddr_storage *addr);
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/**
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* Are we on the same network?
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*
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* For IPv6, we only need to check for /64, there are no other
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* local netmasks.
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*
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* @param addr1 struct sockaddr_storage of address
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* @param addr2 struct sockaddr_storage of address
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* @param prefixlen netmask (either CIDR oder IPv6 prefixlen)
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* @return true if \c addr1 and \c addr2 are on the
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* same net, false otherwise.
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*/
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OPAL_DECLSPEC bool opal_samenetwork(struct sockaddr_storage *addr1,
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struct sockaddr_storage *addr2,
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uint32_t prefixlen);
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#if OPAL_WANT_IPV6
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/**
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* Convert sockaddr_in6 to string
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*
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* @param addr struct sockaddr_in6 of address
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* @return literal representation of \c addr
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*/
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OPAL_DECLSPEC char* opal_sockaddr2str(struct sockaddr_in6 *addr1);
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#endif
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/**
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* Finalize the functions to release malloc'd data
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*
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* @param none
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* @return OPAL_SUCCESS if no problems encountered
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* @return OPAL_ERROR if data could not be released
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*/
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OPAL_DECLSPEC int opal_iffinalize(void);
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#if defined(c_plusplus) || defined(__cplusplus)
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}
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#endif
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#endif
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