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