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git.proxmox.com Git - mirror_frr.git/blob - zebra/if_sysctl.c
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 along
18 * with this program; see the file COPYING; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
24 #if !defined(GNU_LINUX) && !defined(OPEN_BSD)
27 #include "sockunion.h"
29 #include "connected.h"
31 #include "zebra_memory.h"
34 #include "interface.h"
38 #include "zebra/kernel_socket.h"
39 #include "zebra/rib.h"
40 #include "zebra/zebra_errors.h"
42 void ifstat_update_sysctl(void)
44 caddr_t ref
, buf
, end
;
46 struct if_msghdr
*ifm
;
47 struct interface
*ifp
;
51 CTL_NET
, PF_ROUTE
, 0, 0, /* AF_INET & AF_INET6 */
54 /* Query buffer size. */
55 if (sysctl(mib
, MIBSIZ
, NULL
, &bufsiz
, NULL
, 0) < 0) {
56 flog_warn(EC_ZEBRA_SYSCTL_FAILED
, "sysctl() error by %s",
57 safe_strerror(errno
));
61 /* We free this memory at the end of this function. */
62 ref
= buf
= XMALLOC(MTYPE_TMP
, bufsiz
);
64 /* Fetch interface information into allocated buffer. */
65 if (sysctl(mib
, MIBSIZ
, buf
, &bufsiz
, NULL
, 0) < 0) {
66 flog_warn(EC_ZEBRA_SYSCTL_FAILED
, "sysctl error by %s",
67 safe_strerror(errno
));
68 XFREE(MTYPE_TMP
, ref
);
72 /* Parse both interfaces and addresses. */
73 for (end
= buf
+ bufsiz
; buf
< end
; buf
+= ifm
->ifm_msglen
) {
74 ifm
= (struct if_msghdr
*)buf
;
75 if (ifm
->ifm_type
== RTM_IFINFO
) {
76 ifp
= if_lookup_by_index(ifm
->ifm_index
, VRF_DEFAULT
);
78 ifp
->stats
= ifm
->ifm_data
;
82 /* Free sysctl buffer. */
83 XFREE(MTYPE_TMP
, ref
);
88 /* Interface listing up function using sysctl(). */
89 void interface_list(struct zebra_ns
*zns
)
91 caddr_t ref
, buf
, end
;
93 struct if_msghdr
*ifm
;
97 CTL_NET
, PF_ROUTE
, 0, 0, /* AF_INET & AF_INET6 */
100 if (zns
->ns_id
!= NS_DEFAULT
) {
101 zlog_debug("interface_list: ignore NS %u", zns
->ns_id
);
105 /* Query buffer size. */
106 if (sysctl(mib
, MIBSIZ
, NULL
, &bufsiz
, NULL
, 0) < 0) {
107 flog_err_sys(EC_ZEBRA_IFLIST_FAILED
,
108 "Could not enumerate interfaces: %s",
109 safe_strerror(errno
));
113 /* We free this memory at the end of this function. */
114 ref
= buf
= XMALLOC(MTYPE_TMP
, bufsiz
);
116 /* Fetch interface information into allocated buffer. */
117 if (sysctl(mib
, MIBSIZ
, buf
, &bufsiz
, NULL
, 0) < 0) {
118 flog_err_sys(EC_ZEBRA_IFLIST_FAILED
,
119 "Could not enumerate interfaces: %s",
120 safe_strerror(errno
));
124 /* Parse both interfaces and addresses. */
125 for (end
= buf
+ bufsiz
; buf
< end
; buf
+= ifm
->ifm_msglen
) {
126 ifm
= (struct if_msghdr
*)buf
;
128 switch (ifm
->ifm_type
) {
133 ifam_read((struct ifa_msghdr
*)ifm
);
136 zlog_info("interfaces_list(): unexpected message type");
137 XFREE(MTYPE_TMP
, ref
);
143 /* Free sysctl buffer. */
144 XFREE(MTYPE_TMP
, ref
);
147 #endif /* !defined(GNU_LINUX) && !defined(OPEN_BSD) */