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1bc98276 CS |
1 | /* |
2 | * PIM for Quagga | |
3 | * Copyright (C) 2017 Cumulus Networks, Inc. | |
4 | * Chirag Shah | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, but | |
12 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * General Public License for more details. | |
15 | * | |
896014f4 DL |
16 | * You should have received a copy of the GNU General Public License along |
17 | * with this program; see the file COPYING; if not, write to the Free Software | |
18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
1bc98276 CS |
19 | */ |
20 | #ifndef PIM_NHT_H | |
21 | #define PIM_NHT_H | |
22 | ||
23 | #include "prefix.h" | |
24 | #include <zebra.h> | |
25 | #include "zclient.h" | |
26 | #include "vrf.h" | |
27 | ||
28 | #include "pimd.h" | |
29 | #include "pim_rp.h" | |
30 | #include "pim_rpf.h" | |
31 | ||
32 | /* PIM nexthop cache value structure. */ | |
d62a17ae | 33 | struct pim_nexthop_cache { |
34 | struct pim_rpf rpf; | |
35 | /* IGP route's metric. */ | |
d7c0a89a | 36 | uint32_t metric; |
d62a17ae | 37 | uint32_t distance; |
38 | /* Nexthop number and nexthop linked list. */ | |
d7c0a89a | 39 | uint8_t nexthop_num; |
d62a17ae | 40 | struct nexthop *nexthop; |
41 | int64_t last_update; | |
d7c0a89a | 42 | uint16_t flags; |
1bc98276 | 43 | #define PIM_NEXTHOP_VALID (1 << 0) |
2cb7234f | 44 | #define PIM_NEXTHOP_ANSWER_RECEIVED (1 << 1) |
1bc98276 | 45 | |
d62a17ae | 46 | struct list *rp_list; |
7c591950 | 47 | struct hash *upstream_hash; |
4efdb9c6 DL |
48 | |
49 | /* bsr_count won't currently go above 1 as we only have global_scope, | |
50 | * but if anyone adds scope support multiple scopes may NHT-track the | |
51 | * same BSR | |
4533b847 | 52 | */ |
4efdb9c6 | 53 | uint32_t bsr_count; |
1bc98276 CS |
54 | }; |
55 | ||
121f9dee | 56 | int pim_parse_nexthop_update(ZAPI_CALLBACK_ARGS); |
25bdac42 DS |
57 | int pim_find_or_track_nexthop(struct pim_instance *pim, struct prefix *addr, |
58 | struct pim_upstream *up, struct rp_info *rp, | |
d62a17ae | 59 | struct pim_nexthop_cache *out_pnc); |
d0a4f55d | 60 | void pim_delete_tracked_nexthop(struct pim_instance *pim, struct prefix *addr, |
4efdb9c6 | 61 | struct pim_upstream *up, struct rp_info *rp); |
d0a4f55d DS |
62 | struct pim_nexthop_cache *pim_nexthop_cache_find(struct pim_instance *pim, |
63 | struct pim_rpf *rpf); | |
d62a17ae | 64 | uint32_t pim_compute_ecmp_hash(struct prefix *src, struct prefix *grp); |
25b787a2 | 65 | int pim_ecmp_nexthop_lookup(struct pim_instance *pim, |
b938537b DS |
66 | struct pim_nexthop *nexthop, struct prefix *src, |
67 | struct prefix *grp, int neighbor_needed); | |
64c86530 | 68 | void pim_sendmsg_zebra_rnh(struct pim_instance *pim, struct zclient *zclient, |
d62a17ae | 69 | struct pim_nexthop_cache *pnc, int command); |
25b787a2 | 70 | int pim_ecmp_fib_lookup_if_vif_index(struct pim_instance *pim, |
b938537b | 71 | struct prefix *src, struct prefix *grp); |
640b8d93 | 72 | void pim_rp_nexthop_del(struct rp_info *rp_info); |
4b936634 | 73 | |
4efdb9c6 DL |
74 | /* for RPF check on BSM message receipt */ |
75 | void pim_nht_bsr_add(struct pim_instance *pim, struct in_addr bsr_addr); | |
76 | void pim_nht_bsr_del(struct pim_instance *pim, struct in_addr bsr_addr); | |
77 | /* RPF(bsr_addr) == src_ip%src_ifp? */ | |
78 | bool pim_nht_bsr_rpf_check(struct pim_instance *pim, struct in_addr bsr_addr, | |
79 | struct interface *src_ifp, struct in_addr src_ip); | |
80 | ||
1bc98276 | 81 | #endif |