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| 1 | /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
|---|---|
| 2 | #ifndef _UAPI_LINUX_NEXTHOP_H |
| 3 | #define _UAPI_LINUX_NEXTHOP_H |
| 4 | |
| 5 | #include <linux/types.h> |
| 6 | |
| 7 | struct nhmsg { |
| 8 | unsigned char nh_family; |
| 9 | unsigned char nh_scope; /* return only */ |
| 10 | unsigned char nh_protocol; /* Routing protocol that installed nh */ |
| 11 | unsigned char resvd; |
| 12 | unsigned int nh_flags; /* RTNH_F flags */ |
| 13 | }; |
| 14 | |
| 15 | /* entry in a nexthop group */ |
| 16 | struct nexthop_grp { |
| 17 | __u32 id; /* nexthop id - must exist */ |
| 18 | __u8 weight; /* weight of this nexthop */ |
| 19 | __u8 resvd1; |
| 20 | __u16 resvd2; |
| 21 | }; |
| 22 | |
| 23 | enum { |
| 24 | NEXTHOP_GRP_TYPE_MPATH, /* hash-threshold nexthop group |
| 25 | * default type if not specified |
| 26 | */ |
| 27 | NEXTHOP_GRP_TYPE_RES, /* resilient nexthop group */ |
| 28 | __NEXTHOP_GRP_TYPE_MAX, |
| 29 | }; |
| 30 | |
| 31 | #define NEXTHOP_GRP_TYPE_MAX (__NEXTHOP_GRP_TYPE_MAX - 1) |
| 32 | |
| 33 | enum { |
| 34 | NHA_UNSPEC, |
| 35 | NHA_ID, /* u32; id for nexthop. id == 0 means auto-assign */ |
| 36 | |
| 37 | NHA_GROUP, /* array of nexthop_grp */ |
| 38 | NHA_GROUP_TYPE, /* u16 one of NEXTHOP_GRP_TYPE */ |
| 39 | /* if NHA_GROUP attribute is added, no other attributes can be set */ |
| 40 | |
| 41 | NHA_BLACKHOLE, /* flag; nexthop used to blackhole packets */ |
| 42 | /* if NHA_BLACKHOLE is added, OIF, GATEWAY, ENCAP can not be set */ |
| 43 | |
| 44 | NHA_OIF, /* u32; nexthop device */ |
| 45 | NHA_GATEWAY, /* be32 (IPv4) or in6_addr (IPv6) gw address */ |
| 46 | NHA_ENCAP_TYPE, /* u16; lwt encap type */ |
| 47 | NHA_ENCAP, /* lwt encap data */ |
| 48 | |
| 49 | /* NHA_OIF can be appended to dump request to return only |
| 50 | * nexthops using given device |
| 51 | */ |
| 52 | NHA_GROUPS, /* flag; only return nexthop groups in dump */ |
| 53 | NHA_MASTER, /* u32; only return nexthops with given master dev */ |
| 54 | |
| 55 | NHA_FDB, /* flag; nexthop belongs to a bridge fdb */ |
| 56 | /* if NHA_FDB is added, OIF, BLACKHOLE, ENCAP cannot be set */ |
| 57 | |
| 58 | /* nested; resilient nexthop group attributes */ |
| 59 | NHA_RES_GROUP, |
| 60 | /* nested; nexthop bucket attributes */ |
| 61 | NHA_RES_BUCKET, |
| 62 | |
| 63 | __NHA_MAX, |
| 64 | }; |
| 65 | |
| 66 | #define NHA_MAX (__NHA_MAX - 1) |
| 67 | |
| 68 | enum { |
| 69 | NHA_RES_GROUP_UNSPEC, |
| 70 | /* Pad attribute for 64-bit alignment. */ |
| 71 | NHA_RES_GROUP_PAD = NHA_RES_GROUP_UNSPEC, |
| 72 | |
| 73 | /* u16; number of nexthop buckets in a resilient nexthop group */ |
| 74 | NHA_RES_GROUP_BUCKETS, |
| 75 | /* clock_t as u32; nexthop bucket idle timer (per-group) */ |
| 76 | NHA_RES_GROUP_IDLE_TIMER, |
| 77 | /* clock_t as u32; nexthop unbalanced timer */ |
| 78 | NHA_RES_GROUP_UNBALANCED_TIMER, |
| 79 | /* clock_t as u64; nexthop unbalanced time */ |
| 80 | NHA_RES_GROUP_UNBALANCED_TIME, |
| 81 | |
| 82 | __NHA_RES_GROUP_MAX, |
| 83 | }; |
| 84 | |
| 85 | #define NHA_RES_GROUP_MAX (__NHA_RES_GROUP_MAX - 1) |
| 86 | |
| 87 | enum { |
| 88 | NHA_RES_BUCKET_UNSPEC, |
| 89 | /* Pad attribute for 64-bit alignment. */ |
| 90 | NHA_RES_BUCKET_PAD = NHA_RES_BUCKET_UNSPEC, |
| 91 | |
| 92 | /* u16; nexthop bucket index */ |
| 93 | NHA_RES_BUCKET_INDEX, |
| 94 | /* clock_t as u64; nexthop bucket idle time */ |
| 95 | NHA_RES_BUCKET_IDLE_TIME, |
| 96 | /* u32; nexthop id assigned to the nexthop bucket */ |
| 97 | NHA_RES_BUCKET_NH_ID, |
| 98 | |
| 99 | __NHA_RES_BUCKET_MAX, |
| 100 | }; |
| 101 | |
| 102 | #define NHA_RES_BUCKET_MAX (__NHA_RES_BUCKET_MAX - 1) |
| 103 | |
| 104 | #endif |
| 105 |
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