114 lines
3.8 KiB
C
114 lines
3.8 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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* NEXTHOP-related (RTM_<NEW|DEL|GET>NEXTHOP) message header and attributes.
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*/
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#ifndef _NETLINK_ROUTE_NEXTHOP_H_
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#define _NETLINK_ROUTE_NEXTHOP_H_
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/* Base header for all of the relevant messages */
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struct nhmsg {
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unsigned char nh_family; /* transport family */
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unsigned char nh_scope; /* ignored on RX, filled by kernel */
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unsigned char nh_protocol; /* Routing protocol that installed nh */
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unsigned char resvd;
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unsigned int nh_flags; /* RTNH_F_* flags from route.h */
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};
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enum {
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NHA_UNSPEC,
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NHA_ID, /* u32: nexthop userland index, auto-assigned if 0 */
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NHA_GROUP, /* binary: array of struct nexthop_grp */
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NHA_GROUP_TYPE, /* u16: set to NEXTHOP_GRP_TYPE */
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NHA_BLACKHOLE, /* flag: nexthop used to blackhole packets */
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NHA_OIF, /* u32: transmit ifindex */
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NHA_GATEWAY, /* network: IPv4/IPv6 gateway addr */
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NHA_ENCAP_TYPE, /* not supported */
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NHA_ENCAP, /* not supported */
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NHA_GROUPS, /* flag: match nexthop groups */
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NHA_MASTER, /* not supported */
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NHA_FDB, /* not supported */
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NHA_RES_GROUP, /* not supported */
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NHA_RES_BUCKET, /* not supported */
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NHA_FREEBSD, /* nested: FreeBSD-specific attributes */
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__NHA_MAX,
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};
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#define NHA_MAX (__NHA_MAX - 1)
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enum {
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NHAF_UNSPEC,
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NHAF_KNHOPS, /* flag: dump kernel nexthops */
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NHAF_KGOUPS, /* flag: dump kernel nexthop groups */
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NHAF_TABLE, /* u32: rtable id */
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NHAF_FAMILY, /* u32: upper family */
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NHAF_KID, /* u32: kernel nexthop index */
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NHAF_AIF, /* u32: source interface address */
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};
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/*
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* Attributes that can be used as filters:
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* NHA_ID (nexhop or group), NHA_OIF, NHA_GROUPS,
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*/
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/*
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* NHA_GROUP: array of the following structures.
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* If attribute is set, the only other valid attributes are
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* NHA_ID and NHA_GROUP_TYPE.
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* NHA_RES_GROUP and NHA_RES_BUCKET are not supported yet
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*/
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struct nexthop_grp {
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uint32_t id; /* nexhop userland index */
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uint8_t weight; /* weight of this nexthop */
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uint8_t resvd1;
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uint16_t resvd2;
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};
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/* NHA_GROUP_TYPE: u16 */
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enum {
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NEXTHOP_GRP_TYPE_MPATH, /* default nexthop group */
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NEXTHOP_GRP_TYPE_RES, /* resilient nexthop group */
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__NEXTHOP_GRP_TYPE_MAX,
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};
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#define NEXTHOP_GRP_TYPE_MAX (__NEXTHOP_GRP_TYPE_MAX - 1)
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/* NHA_RES_GROUP */
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enum {
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NHA_RES_GROUP_UNSPEC,
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NHA_RES_GROUP_PAD = NHA_RES_GROUP_UNSPEC,
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NHA_RES_GROUP_BUCKETS,
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NHA_RES_GROUP_IDLE_TIMER,
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NHA_RES_GROUP_UNBALANCED_TIMER,
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NHA_RES_GROUP_UNBALANCED_TIME,
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__NHA_RES_GROUP_MAX,
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};
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#define NHA_RES_GROUP_MAX (__NHA_RES_GROUP_MAX - 1)
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#endif
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