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, /* default type if not specified */ 25 __NEXTHOP_GRP_TYPE_MAX, 26 }; 27 28 #define NEXTHOP_GRP_TYPE_MAX (__NEXTHOP_GRP_TYPE_MAX - 1) 29 30 enum { 31 NHA_UNSPEC, 32 NHA_ID, /* u32; id for nexthop. id == 0 means auto-assign */ 33 34 NHA_GROUP, /* array of nexthop_grp */ 35 NHA_GROUP_TYPE, /* u16 one of NEXTHOP_GRP_TYPE */ 36 /* if NHA_GROUP attribute is added, no other attributes can be set */ 37 38 NHA_BLACKHOLE, /* flag; nexthop used to blackhole packets */ 39 /* if NHA_BLACKHOLE is added, OIF, GATEWAY, ENCAP can not be set */ 40 41 NHA_OIF, /* u32; nexthop device */ 42 NHA_GATEWAY, /* be32 (IPv4) or in6_addr (IPv6) gw address */ 43 NHA_ENCAP_TYPE, /* u16; lwt encap type */ 44 NHA_ENCAP, /* lwt encap data */ 45 46 /* NHA_OIF can be appended to dump request to return only 47 * nexthops using given device 48 */ 49 NHA_GROUPS, /* flag; only return nexthop groups in dump */ 50 NHA_MASTER, /* u32; only return nexthops with given master dev */ 51 52 __NHA_MAX, 53 }; 54 55 #define NHA_MAX (__NHA_MAX - 1) 56 #endif 57