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- /*
- * Get interface's address and mask information by sysctl() function.
- * Copyright (C) 1997, 98 Kunihiro Ishiguro
- *
- * This file is part of GNU Zebra.
- *
- * GNU Zebra is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
- *
- * GNU Zebra is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU Zebra; see the file COPYING. If not, write to the Free
- * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
- */
- #include <zebra.h>
- #include "if.h"
- #include "sockunion.h"
- #include "prefix.h"
- #include "connected.h"
- #include "memory.h"
- #include "ioctl.h"
- #include "log.h"
- #include "interface.h"
- #include "vrf.h"
- #include "zebra/rt.h"
- #include "zebra/kernel_socket.h"
- #include "zebra/rib.h"
- void
- ifstat_update_sysctl (void)
- {
- caddr_t ref, buf, end;
- size_t bufsiz;
- struct if_msghdr *ifm;
- struct interface *ifp;
- #define MIBSIZ 6
- int mib[MIBSIZ] =
- {
- CTL_NET,
- PF_ROUTE,
- 0,
- 0, /* AF_INET & AF_INET6 */
- NET_RT_IFLIST,
- 0
- };
- /* Query buffer size. */
- if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
- {
- zlog_warn ("sysctl() error by %s", safe_strerror (errno));
- return;
- }
- /* We free this memory at the end of this function. */
- ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
- /* Fetch interface informations into allocated buffer. */
- if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
- {
- zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
- return;
- }
- /* Parse both interfaces and addresses. */
- for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen)
- {
- ifm = (struct if_msghdr *) buf;
- if (ifm->ifm_type == RTM_IFINFO)
- {
- ifp = if_lookup_by_index (ifm->ifm_index);
- if (ifp)
- ifp->stats = ifm->ifm_data;
- }
- }
- /* Free sysctl buffer. */
- XFREE (MTYPE_TMP, ref);
- return;
- }
- /* Interface listing up function using sysctl(). */
- void
- interface_list (struct zebra_vrf *zvrf)
- {
- caddr_t ref, buf, end;
- size_t bufsiz;
- struct if_msghdr *ifm;
- #define MIBSIZ 6
- int mib[MIBSIZ] =
- {
- CTL_NET,
- PF_ROUTE,
- 0,
- 0, /* AF_INET & AF_INET6 */
- NET_RT_IFLIST,
- 0
- };
- if (zvrf->vrf_id != VRF_DEFAULT)
- {
- zlog_warn ("interface_list: ignore VRF %u", zvrf->vrf_id);
- return;
- }
- /* Query buffer size. */
- if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
- {
- zlog (NULL, LOG_WARNING, "sysctl() error by %s", safe_strerror (errno));
- return;
- }
- /* We free this memory at the end of this function. */
- ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
- /* Fetch interface informations into allocated buffer. */
- if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
- {
- zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
- return;
- }
- /* Parse both interfaces and addresses. */
- for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen)
- {
- ifm = (struct if_msghdr *) buf;
- switch (ifm->ifm_type)
- {
- case RTM_IFINFO:
- ifm_read (ifm);
- break;
- case RTM_NEWADDR:
- ifam_read ((struct ifa_msghdr *) ifm);
- break;
- default:
- zlog_info ("interfaces_list(): unexpected message type");
- XFREE (MTYPE_TMP, ref);
- return;
- break;
- }
- }
- /* Free sysctl buffer. */
- XFREE (MTYPE_TMP, ref);
- }
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