112 lines
3.9 KiB
C
112 lines
3.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2022 Alexander V. Chernikov <melifaro@FreeBSD.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Neighbors-related (RTM_<NEW|DEL|GET>NEIGH) message header and attributes.
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*/
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#ifndef _NETLINK_ROUTE_NEIGH_H_
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#define _NETLINK_ROUTE_NEIGH_H_
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/* Base header for all of the relevant messages */
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struct ndmsg {
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uint8_t ndm_family;
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uint8_t ndm_pad1;
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uint16_t ndm_pad2;
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int32_t ndm_ifindex;
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uint16_t ndm_state;
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uint8_t ndm_flags;
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uint8_t ndm_type;
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};
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/* Attributes */
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enum {
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NDA_UNSPEC,
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NDA_DST, /* binary: neigh l3 address */
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NDA_LLADDR, /* binary: neigh link-level address */
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NDA_CACHEINFO, /* binary, struct nda_cacheinfo */
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NDA_PROBES, /* u32: number of probes sent */
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NDA_VLAN, /* upper 802.1Q tag */
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NDA_PORT, /* not supported */
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NDA_VNI, /* not supported */
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NDA_IFINDEX, /* interface index */
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NDA_MASTER, /* not supported */
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NDA_LINK_NETNSID, /* not supported */
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NDA_SRC_VNI, /* not supported */
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NDA_PROTOCOL, /* XXX */
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NDA_NH_ID, /* not supported */
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NDA_FDB_EXT_ATTRS, /* not supported */
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NDA_FLAGS_EXT, /* u32: ndm_flags */
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NDA_NDM_STATE_MASK, /* XXX */
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NDA_NDM_FLAGS_MASK, /* XXX */
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NDA_FREEBSD, /* nested: FreeBSD-specific */
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__NDA_MAX
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};
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#define NDA_MAX (__NDA_MAX - 1)
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enum {
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NDAF_UNSPEC,
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NDAF_NEXT_STATE_TS, /* (u32) seconds from time_uptime when moving to the next state */
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};
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/* ndm_flags / NDA_FLAGS_EXT */
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#define NTF_USE 0x0001 /* XXX */
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#define NTF_SELF 0x0002 /* local station */
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#define NTF_MASTER 0x0004 /* XXX */
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#define NTF_PROXY 0x0008 /* proxy entry */
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#define NTF_EXT_LEARNED 0x0010 /* not used */
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#define NTF_OFFLOADED 0x0020 /* not used */
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#define NTF_STICKY 0x0040 /* permament entry */
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#define NTF_ROUTER 0x0080 /* dst indicated itself as a router */
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/* start of NDA_FLAGS_EXT */
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#define NTF_EXT_MANAGED 0x0100 /* not used */
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/* ndm_state */
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#define NUD_INCOMPLETE 0x01 /* No lladdr, address resolution in progress */
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#define NUD_REACHABLE 0x02 /* reachable & recently resolved */
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#define NUD_STALE 0x04 /* has lladdr but it's stale */
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#define NUD_DELAY 0x08 /* has lladdr, is stale, probes delayed */
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#define NUD_PROBE 0x10 /* has lladdr, is stale, probes sent */
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#define NUD_FAILED 0x20 /* unused */
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/* Dummy states */
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#define NUD_NOARP 0x40 /* not used */
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#define NUD_PERMANENT 0x80 /* not flushed */
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#define NUD_NONE 0x00
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/* NDA_CACHEINFO */
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struct nda_cacheinfo {
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uint32_t ndm_confirmed; /* seconds since ARP/ND was received from neigh */
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uint32_t ndm_used; /* seconds since last used (not provided) */
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uint32_t ndm_updated; /* seconds since state was updated last */
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uint32_t ndm_refcnt; /* number of references held */
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};
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#endif
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