164 строки
5.7 KiB
C
164 строки
5.7 KiB
C
/*
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* Copyright (c) 2010 Cisco Systems, Inc. All rights reserved.
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* Copyright (c) 2010 Oracle and/or its affiliates. All rights reserved.
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* Copyright (c) 2018 Amazon.com, Inc. or its affiliates. All Rights
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* 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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#include "opal_config.h"
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#include <string.h>
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#include <errno.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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#endif
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#ifdef HAVE_SYS_SOCKIO_H
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#include <sys/sockio.h>
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#endif
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#ifdef HAVE_SYS_IOCTL_H
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#include <sys/ioctl.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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#ifdef HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#ifdef HAVE_NET_IF_H
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#include <net/if.h>
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#endif
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#ifdef HAVE_NETDB_H
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#include <netdb.h>
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#endif
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#ifdef HAVE_IFADDRS_H
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#include <ifaddrs.h>
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#endif
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#include "opal/constants.h"
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#include "opal/util/if.h"
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#include "opal/util/output.h"
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#include "opal/util/string_copy.h"
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#include "opal/mca/if/if.h"
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#include "opal/mca/if/base/base.h"
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static int if_linux_ipv6_open(void);
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/* Discovers Linux IPv6 interfaces */
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opal_if_base_component_t mca_if_linux_ipv6_component = {
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/* First, the mca_component_t struct containing meta information
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about the component itself */
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{
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OPAL_IF_BASE_VERSION_2_0_0,
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/* Component name and version */
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"linux_ipv6",
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OPAL_MAJOR_VERSION,
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OPAL_MINOR_VERSION,
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OPAL_RELEASE_VERSION,
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/* Component open and close functions */
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if_linux_ipv6_open,
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NULL
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},
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{
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/* This component is checkpointable */
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MCA_BASE_METADATA_PARAM_CHECKPOINT
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},
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};
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/* configure using getifaddrs(3) */
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static int if_linux_ipv6_open(void)
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{
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#if OPAL_ENABLE_IPV6
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FILE *f;
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if ((f = fopen("/proc/net/if_inet6", "r"))) {
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char ifname[IF_NAMESIZE];
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unsigned int idx, pfxlen, scope, dadstat;
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struct in6_addr a6;
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int iter;
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uint32_t flag;
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unsigned int addrbyte[16];
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while (fscanf(f, "%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x%2x %x %x %x %x %20s\n",
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&addrbyte[0], &addrbyte[1], &addrbyte[2], &addrbyte[3],
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&addrbyte[4], &addrbyte[5], &addrbyte[6], &addrbyte[7],
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&addrbyte[8], &addrbyte[9], &addrbyte[10], &addrbyte[11],
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&addrbyte[12], &addrbyte[13], &addrbyte[14], &addrbyte[15],
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&idx, &pfxlen, &scope, &dadstat, ifname) != EOF) {
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opal_if_t *intf;
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opal_output_verbose(1, opal_if_base_framework.framework_output,
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"found interface %2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x scope %x\n",
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addrbyte[0], addrbyte[1], addrbyte[2], addrbyte[3],
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addrbyte[4], addrbyte[5], addrbyte[6], addrbyte[7],
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addrbyte[8], addrbyte[9], addrbyte[10], addrbyte[11],
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addrbyte[12], addrbyte[13], addrbyte[14], addrbyte[15], scope);
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/* Only interested in global (0x00) scope */
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if (scope != 0x00) {
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opal_output_verbose(1, opal_if_base_framework.framework_output,
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"skipping interface %2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x scope %x\n",
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addrbyte[0], addrbyte[1], addrbyte[2], addrbyte[3],
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addrbyte[4], addrbyte[5], addrbyte[6], addrbyte[7],
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addrbyte[8], addrbyte[9], addrbyte[10], addrbyte[11],
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addrbyte[12], addrbyte[13], addrbyte[14], addrbyte[15], scope);
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continue;
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}
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intf = OBJ_NEW(opal_if_t);
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if (NULL == intf) {
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opal_output(0, "opal_ifinit: unable to allocate %lu bytes\n",
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(unsigned long)sizeof(opal_if_t));
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fclose(f);
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return OPAL_ERR_OUT_OF_RESOURCE;
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}
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intf->af_family = AF_INET6;
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for (iter = 0; iter < 16; iter++) {
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a6.s6_addr[iter] = addrbyte[iter];
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}
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/* now construct the opal_if_t */
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opal_string_copy(intf->if_name, ifname, IF_NAMESIZE);
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intf->if_index = opal_list_get_size(&opal_if_list)+1;
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intf->if_kernel_index = (uint16_t) idx;
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((struct sockaddr_in6*) &intf->if_addr)->sin6_addr = a6;
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((struct sockaddr_in6*) &intf->if_addr)->sin6_family = AF_INET6;
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((struct sockaddr_in6*) &intf->if_addr)->sin6_scope_id = scope;
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intf->if_mask = pfxlen;
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if (OPAL_SUCCESS == opal_ifindextoflags(opal_ifnametoindex (ifname), &flag)) {
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intf->if_flags = flag;
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} else {
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intf->if_flags = IFF_UP;
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}
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/* copy new interface information to heap and append
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to list */
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opal_list_append(&opal_if_list, &(intf->super));
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opal_output_verbose(1, opal_if_base_framework.framework_output,
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"added interface %2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x:%2x%2x\n",
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addrbyte[0], addrbyte[1], addrbyte[2], addrbyte[3],
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addrbyte[4], addrbyte[5], addrbyte[6], addrbyte[7],
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addrbyte[8], addrbyte[9], addrbyte[10], addrbyte[11],
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addrbyte[12], addrbyte[13], addrbyte[14], addrbyte[15]);
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} /* of while */
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fclose(f);
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}
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#endif /* OPAL_ENABLE_IPV6 */
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return OPAL_SUCCESS;
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}
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