Adding upstream version 8.4.4.upstream/8.4.4upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 146 insertions, 0 deletions

diff --git a/zebra/if_sysctl.c b/zebra/if_sysctl.c
new file mode 100644
index 0000000..70d1164
--- /dev/null
+++ b/zebra/if_sysctl.c
@@ -0,0 +1,146 @@
+/*
+ * 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 this program; see the file COPYING; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include <zebra.h>
+
+#if !defined(GNU_LINUX) && !defined(OPEN_BSD)
+
+#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"
+#include "zebra/zebra_errors.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) {
+		flog_warn(EC_ZEBRA_SYSCTL_FAILED, "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 information into allocated buffer. */
+	if (sysctl(mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0) {
+		flog_warn(EC_ZEBRA_SYSCTL_FAILED, "sysctl error by %s",
+			  safe_strerror(errno));
+		XFREE(MTYPE_TMP, ref);
+		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, VRF_DEFAULT);
+			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_ns *zns)
+{
+	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 (zns->ns_id != NS_DEFAULT) {
+		zlog_debug("%s: ignore NS %u", __func__, zns->ns_id);
+		return;
+	}
+
+	/* Query buffer size. */
+	if (sysctl(mib, MIBSIZ, NULL, &bufsiz, NULL, 0) < 0) {
+		flog_err_sys(EC_ZEBRA_IFLIST_FAILED,
+			     "Could not enumerate interfaces: %s",
+			     safe_strerror(errno));
+		return;
+	}
+
+	/* We free this memory at the end of this function. */
+	ref = buf = XMALLOC(MTYPE_TMP, bufsiz);
+
+	/* Fetch interface information into allocated buffer. */
+	if (sysctl(mib, MIBSIZ, buf, &bufsiz, NULL, 0) < 0) {
+		flog_err_sys(EC_ZEBRA_IFLIST_FAILED,
+			     "Could not enumerate interfaces: %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("%s: unexpected message type", __func__);
+			XFREE(MTYPE_TMP, ref);
+			return;
+			break;
+		}
+	}
+
+	/* Free sysctl buffer. */
+	XFREE(MTYPE_TMP, ref);
+}
+
+#endif /* !defined(GNU_LINUX) && !defined(OPEN_BSD) */