1 files changed, 99 insertions, 0 deletions
diff --git a/sys/netlink/route/ifaddrs.h b/sys/netlink/route/ifaddrs.h
new file mode 100644
index 000000000000..88d776c3b925
--- /dev/null
+++ b/sys/netlink/route/ifaddrs.h
@@ -0,0 +1,99 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2022 Alexander V. Chernikov <melifaro@FreeBSD.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+/*
+ * Interface address-related (RTM_<NEW|DEL|GET>ADDR) message header and attributes.
+ */
+
+#ifndef _NETLINK_ROUTE_IFADDRS_H_
+#define _NETLINK_ROUTE_IFADDRS_H_
+
+/* Base header for all of the relevant messages */
+struct ifaddrmsg {
+	uint8_t		ifa_family;	/* Address family */
+	uint8_t		ifa_prefixlen;	/* Prefix length */
+	uint8_t		ifa_flags;	/* Address-specific flags */
+	uint8_t		ifa_scope;	/* Address scope */
+	uint32_t	ifa_index;	/* Link ifindex */
+};
+
+#ifndef _KERNEL
+#define	_NL_IFA_HDRLEN		((int)sizeof(struct ifaddrmsg))
+#define	IFA_RTA(_ifa)		((struct rtattr *)(NL_ITEM_DATA(_ifa, _NL_IFA_HDRLEN)))
+#define	IFA_PAYLOAD(_hdr)	NLMSG_PAYLOAD(_hdr, _NL_IFA_HDRLEN)
+#endif
+
+/* Defined attributes */
+enum {
+	IFA_UNSPEC,
+	IFA_ADDRESS		= 1, /* binary, prefix address (destination for p2p) */
+	IFA_LOCAL		= 2, /* binary, interface address */
+	IFA_LABEL		= 3, /* string, interface name */
+	IFA_BROADCAST		= 4, /* binary, broadcast ifa */
+	IFA_ANYCAST		= 5, /* not supported */
+	IFA_CACHEINFO		= 6, /* binary, struct ifa_cacheinfo */
+	IFA_MULTICAST		= 7, /* not supported */
+	IFA_FLAGS		= 8, /* u32, IFA_F flags */
+	IFA_RT_PRIORITY		= 9, /* not supported */
+	IFA_TARGET_NETNSID	= 10, /* not supported */
+	IFA_FREEBSD		= 11, /* nested, FreeBSD-specific */
+	__IFA_MAX,
+};
+#define IFA_MAX		(__IFA_MAX - 1)
+
+enum {
+	IFAF_UNSPEC,
+	IFAF_VHID		= 1, /* u32: carp vhid */
+	IFAF_FLAGS		= 2, /* u32: FreeBSD-specific ifa flags */
+	__IFAF_MAX,
+};
+#define IFAF_MAX	(__IFAF_MAX - 1)
+
+/* IFA_FLAGS attribute flags */
+#define IFA_F_SECONDARY		0x0001
+#define IFA_F_TEMPORARY		IFA_F_SECONDARY
+#define IFA_F_NODAD		0x0002
+#define IFA_F_OPTIMISTIC	0x0004
+#define IFA_F_DADFAILED		0x0008
+#define IFA_F_HOMEADDRESS	0x0010
+#define IFA_F_DEPRECATED	0x0020
+#define IFA_F_TENTATIVE		0x0040
+#define IFA_F_PERMANENT		0x0080
+#define IFA_F_MANAGETEMPADDR	0x0100
+#define IFA_F_NOPREFIXROUTE	0x0200
+#define IFA_F_MCAUTOJOIN	0x0400
+#define IFA_F_STABLE_PRIVACY	0x0800
+
+/* IFA_CACHEINFO value */
+struct ifa_cacheinfo {
+	uint32_t ifa_prefered;	/* seconds till the end of the prefix considered preferred */
+	uint32_t ifa_valid;	/* seconds till the end of the prefix considered valid */
+	uint32_t cstamp;	/* creation time in 1ms intervals from the boot time */
+	uint32_t tstamp;	/* update time in 1ms intervals from the boot time */
+};
+
+#endif