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acddc0ed3c
Done with a combination of regex'ing and banging my head against a wall. Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
132 lines
3.0 KiB
C
132 lines
3.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Get interface's address and mask information by sysctl() function.
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* Copyright (C) 1997, 98 Kunihiro Ishiguro
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*/
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#include <zebra.h>
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#if !defined(GNU_LINUX) && !defined(OPEN_BSD)
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#include "if.h"
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#include "sockunion.h"
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#include "prefix.h"
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#include "connected.h"
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#include "memory.h"
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#include "ioctl.h"
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#include "log.h"
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#include "interface.h"
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#include "vrf.h"
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#include "zebra/rt.h"
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#include "zebra/kernel_socket.h"
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#include "zebra/rib.h"
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#include "zebra/zebra_errors.h"
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void ifstat_update_sysctl(void)
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{
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caddr_t ref, buf, end;
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size_t bufsiz;
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struct if_msghdr *ifm;
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struct interface *ifp;
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#define MIBSIZ 6
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int mib[MIBSIZ] = {
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CTL_NET, PF_ROUTE, 0, 0, /* AF_INET & AF_INET6 */
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NET_RT_IFLIST, 0};
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/* Query buffer size. */
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if (sysctl(mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0) {
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flog_warn(EC_ZEBRA_SYSCTL_FAILED, "sysctl() error by %s",
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safe_strerror(errno));
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return;
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}
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/* We free this memory at the end of this function. */
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ref = buf = XMALLOC(MTYPE_TMP, bufsiz);
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/* Fetch interface information into allocated buffer. */
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if (sysctl(mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0) {
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flog_warn(EC_ZEBRA_SYSCTL_FAILED, "sysctl error by %s",
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safe_strerror(errno));
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XFREE(MTYPE_TMP, ref);
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return;
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}
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/* Parse both interfaces and addresses. */
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for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen) {
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ifm = (struct if_msghdr *)buf;
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if (ifm->ifm_type == RTM_IFINFO) {
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ifp = if_lookup_by_index(ifm->ifm_index, VRF_DEFAULT);
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if (ifp)
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ifp->stats = ifm->ifm_data;
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}
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}
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/* Free sysctl buffer. */
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XFREE(MTYPE_TMP, ref);
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return;
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}
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/* Interface listing up function using sysctl(). */
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void interface_list(struct zebra_ns *zns)
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{
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caddr_t ref, buf, end;
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size_t bufsiz;
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struct if_msghdr *ifm;
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#define MIBSIZ 6
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int mib[MIBSIZ] = {
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CTL_NET, PF_ROUTE, 0, 0, /* AF_INET & AF_INET6 */
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NET_RT_IFLIST, 0};
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if (zns->ns_id != NS_DEFAULT) {
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zlog_debug("%s: ignore NS %u", __func__, zns->ns_id);
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return;
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}
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/* Query buffer size. */
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if (sysctl(mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0) {
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flog_err_sys(EC_ZEBRA_IFLIST_FAILED,
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"Could not enumerate interfaces: %s",
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safe_strerror(errno));
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return;
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}
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/* We free this memory at the end of this function. */
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ref = buf = XMALLOC(MTYPE_TMP, bufsiz);
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/* Fetch interface information into allocated buffer. */
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if (sysctl(mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0) {
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flog_err_sys(EC_ZEBRA_IFLIST_FAILED,
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"Could not enumerate interfaces: %s",
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safe_strerror(errno));
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return;
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}
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/* Parse both interfaces and addresses. */
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for (end = buf + bufsiz; buf < end; buf += ifm->ifm_msglen) {
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ifm = (struct if_msghdr *)buf;
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switch (ifm->ifm_type) {
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case RTM_IFINFO:
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ifm_read(ifm);
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break;
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case RTM_NEWADDR:
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ifam_read((struct ifa_msghdr *)ifm);
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break;
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default:
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zlog_info("%s: unexpected message type", __func__);
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XFREE(MTYPE_TMP, ref);
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return;
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break;
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}
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}
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/* Free sysctl buffer. */
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XFREE(MTYPE_TMP, ref);
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}
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#endif /* !defined(GNU_LINUX) && !defined(OPEN_BSD) */
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