2 * Get interface's address and mask information by sysctl() function.
3 * Copyright (C) 1997, 98 Kunihiro Ishiguro
5 * This file is part of GNU Zebra.
7 * GNU Zebra is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
12 * GNU Zebra is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with GNU Zebra; see the file COPYING. If not, write to the Free
19 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
26 #include "sockunion.h"
28 #include "connected.h"
32 #include "interface.h"
36 #include "zebra/kernel_socket.h"
37 #include "zebra/rib.h"
40 ifstat_update_sysctl (void)
42 caddr_t ref, buf, end;
44 struct if_msghdr *ifm;
45 struct interface *ifp;
53 0, /* AF_INET & AF_INET6 */
58 /* Query buffer size. */
59 if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
61 zlog_warn ("sysctl() error by %s", safe_strerror (errno));
65 /* We free this memory at the end of this function. */
66 ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
68 /* Fetch interface informations into allocated buffer. */
69 if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
71 zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
75 /* Parse both interfaces and addresses. */
76 for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen)
78 ifm = (struct if_msghdr *) buf;
79 if (ifm->ifm_type == RTM_IFINFO)
81 ifp = if_lookup_by_index (ifm->ifm_index);
83 ifp->stats = ifm->ifm_data;
87 /* Free sysctl buffer. */
88 XFREE (MTYPE_TMP, ref);
93 /* Interface listing up function using sysctl(). */
95 interface_list (struct zebra_vrf *zvrf)
97 caddr_t ref, buf, end;
99 struct if_msghdr *ifm;
107 0, /* AF_INET & AF_INET6 */
112 if (zvrf->vrf_id != VRF_DEFAULT)
114 zlog_warn ("interface_list: ignore VRF %u", zvrf->vrf_id);
118 /* Query buffer size. */
119 if (sysctl (mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0)
121 zlog (NULL, LOG_WARNING, "sysctl() error by %s", safe_strerror (errno));
125 /* We free this memory at the end of this function. */
126 ref = buf = XMALLOC (MTYPE_TMP, bufsiz);
128 /* Fetch interface informations into allocated buffer. */
129 if (sysctl (mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0)
131 zlog (NULL, LOG_WARNING, "sysctl error by %s", safe_strerror (errno));
135 /* Parse both interfaces and addresses. */
136 for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen)
138 ifm = (struct if_msghdr *) buf;
140 switch (ifm->ifm_type)
146 ifam_read ((struct ifa_msghdr *) ifm);
149 zlog_info ("interfaces_list(): unexpected message type");
150 XFREE (MTYPE_TMP, ref);
156 /* Free sysctl buffer. */
157 XFREE (MTYPE_TMP, ref);