projects / mirror_frr.git / blame
| Commit | Line | Data |
|---|---|---|
| fb018d25 DS |
1 | /* |
| 2 | * Nexthop structure definition. | |
| 3 | * Copyright (C) 2013 Cumulus Networks, Inc. | |
| 4 | * | |
| 5 | * This file is part of GNU Zebra. | |
| 6 | * | |
| 7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
| 8 | * under the terms of the GNU General Public License as published by the | |
| 9 | * Free Software Foundation; either version 2, or (at your option) any | |
| 10 | * later version. | |
| 11 | * | |
| 12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 15 | * General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
| 19 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
| 20 | * 02111-1307, USA. | |
| 21 | */ | |
| 22 | ||
| 23 | #ifndef _LIB_NEXTHOP_H | |
| 24 | #define _LIB_NEXTHOP_H | |
| 25 | ||
| 26 | #include "prefix.h" | |
| 27 | ||
| 28 | union g_addr { | |
| 29 | struct in_addr ipv4; | |
| 30 | #ifdef HAVE_IPV6 | |
| 31 | struct in6_addr ipv6; | |
| 32 | #endif /* HAVE_IPV6 */ | |
| 33 | }; | |
| 34 | ||
| 35 | enum nexthop_types_t | |
| 36 | { | |
| 37 | NEXTHOP_TYPE_IFINDEX = 1, /* Directly connected. */ | |
| 38 | NEXTHOP_TYPE_IFNAME, /* Interface route. */ | |
| 39 | NEXTHOP_TYPE_IPV4, /* IPv4 nexthop. */ | |
| 40 | NEXTHOP_TYPE_IPV4_IFINDEX, /* IPv4 nexthop with ifindex. */ | |
| 41 | NEXTHOP_TYPE_IPV4_IFNAME, /* IPv4 nexthop with ifname. */ | |
| 42 | NEXTHOP_TYPE_IPV6, /* IPv6 nexthop. */ | |
| 43 | NEXTHOP_TYPE_IPV6_IFINDEX, /* IPv6 nexthop with ifindex. */ | |
| 44 | NEXTHOP_TYPE_IPV6_IFNAME, /* IPv6 nexthop with ifname. */ | |
| 45 | NEXTHOP_TYPE_BLACKHOLE, /* Null0 nexthop. */ | |
| 46 | }; | |
| 47 | ||
| 48 | /* Nexthop structure. */ | |
| 49 | struct nexthop | |
| 50 | { | |
| 51 | struct nexthop *next; | |
| 52 | struct nexthop *prev; | |
| 53 | ||
| 54 | /* Interface index. */ | |
| 55 | char *ifname; | |
| 56 | unsigned int ifindex; | |
| 57 | ||
| 58 | enum nexthop_types_t type; | |
| 59 | ||
| 60 | u_char flags; | |
| 61 | #define NEXTHOP_FLAG_ACTIVE (1 << 0) /* This nexthop is alive. */ | |
| 62 | #define NEXTHOP_FLAG_FIB (1 << 1) /* FIB nexthop. */ | |
| 63 | #define NEXTHOP_FLAG_RECURSIVE (1 << 2) /* Recursive nexthop. */ | |
| 64 | #define NEXTHOP_FLAG_ONLINK (1 << 3) /* Nexthop should be installed onlink. */ | |
| 65 | #define NEXTHOP_FLAG_MATCHED (1 << 4) /* Already matched vs a nexthop */ | |
| 66 | ||
| 67 | /* Nexthop address */ | |
| 68 | union g_addr gate; | |
| 69 | union g_addr src; | |
| 70 | ||
| 71 | /* Nexthops obtained by recursive resolution. | |
| 72 | * | |
| 73 | * If the nexthop struct needs to be resolved recursively, | |
| 74 | * NEXTHOP_FLAG_RECURSIVE will be set in flags and the nexthops | |
| 75 | * obtained by recursive resolution will be added to `resolved'. | |
| 76 | * Only one level of recursive resolution is currently supported. */ | |
| 77 | struct nexthop *resolved; | |
| 78 | }; | |
| 79 | ||
| 80 | #define nexthop_new() \ | |
| 81 | ({ \ | |
| 82 | struct nexthop *n = XCALLOC (MTYPE_NEXTHOP, sizeof (struct nexthop)); \ | |
| 83 | n; \ | |
| 84 | }) | |
| 85 | ||
| 86 | extern const char *nexthop_type_to_str (enum nexthop_types_t nh_type); | |
| 87 | extern int nexthop_same_no_recurse (struct nexthop *next1, struct nexthop *next2); | |
| 88 | ||
| 89 | #endif /*_LIB_NEXTHOP_H */ |