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sys/netlink/route/nexthop.h
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| /*- | |||||
| * SPDX-License-Identifier: BSD-2-Clause-FreeBSD | |||||
| * | |||||
| * 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_MAX, | |||||
| }; | |||||
| #define NHA_MAX (__NHA_MAX - 1) | |||||
| /* | |||||
| * 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 | |||||