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7e24fdf3 DS |
1 | /* |
2 | * Static NHT code. | |
3 | * Copyright (C) 2018 Cumulus Networks, Inc. | |
4 | * Donald Sharp | |
5 | * | |
8d5cbee9 DS |
6 | * This program is free software; you can redistribute it and/or modify it |
7 | * under the terms of the GNU General Public License as published by the Free | |
8 | * Software Foundation; either version 2 of the License, or (at your option) | |
9 | * any later version. | |
7e24fdf3 | 10 | * |
8d5cbee9 DS |
11 | * This program is distributed in the hope that it will be useful, but WITHOUT |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
7e24fdf3 DS |
15 | * |
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 | |
19 | */ | |
20 | #include <zebra.h> | |
21 | ||
22 | #include "prefix.h" | |
23 | #include "table.h" | |
24 | #include "vrf.h" | |
25 | #include "nexthop.h" | |
26 | ||
27 | #include "static_vrf.h" | |
28 | #include "static_routes.h" | |
29 | #include "static_zebra.h" | |
30 | #include "static_nht.h" | |
31 | ||
c45fb58d DS |
32 | static void static_nht_update_safi(struct prefix *p, uint32_t nh_num, |
33 | afi_t afi, safi_t safi, struct vrf *vrf, | |
34 | vrf_id_t nh_vrf_id) | |
7e24fdf3 DS |
35 | { |
36 | struct route_table *stable; | |
37 | struct static_route *si; | |
38 | struct static_vrf *svrf; | |
39 | struct route_node *rn; | |
7e24fdf3 DS |
40 | bool orig; |
41 | bool reinstall; | |
42 | ||
c45fb58d DS |
43 | svrf = vrf->info; |
44 | if (!svrf) | |
45 | return; | |
7e24fdf3 | 46 | |
c45fb58d DS |
47 | stable = static_vrf_static_table(afi, safi, svrf); |
48 | if (!stable) | |
49 | return; | |
7e24fdf3 | 50 | |
c45fb58d DS |
51 | for (rn = route_top(stable); rn; rn = route_next(rn)) { |
52 | reinstall = false; | |
53 | for (si = rn->info; si; si = si->next) { | |
54 | if (si->nh_vrf_id != nh_vrf_id) | |
24a4626c | 55 | continue; |
7e24fdf3 | 56 | |
c45fb58d DS |
57 | if (si->type != STATIC_IPV4_GATEWAY |
58 | && si->type != STATIC_IPV4_GATEWAY_IFNAME | |
59 | && si->type != STATIC_IPV6_GATEWAY | |
60 | && si->type != STATIC_IPV6_GATEWAY_IFNAME) | |
24a4626c | 61 | continue; |
7e24fdf3 | 62 | |
c45fb58d DS |
63 | orig = si->nh_valid; |
64 | if (p->family == AF_INET | |
65 | && p->u.prefix4.s_addr == si->addr.ipv4.s_addr) | |
66 | si->nh_valid = !!nh_num; | |
7e24fdf3 | 67 | |
c45fb58d DS |
68 | if (p->family == AF_INET6 |
69 | && memcmp(&p->u.prefix6, &si->addr.ipv6, 16) == 0) | |
70 | si->nh_valid = !!nh_num; | |
7e24fdf3 | 71 | |
c45fb58d DS |
72 | if (orig != si->nh_valid) |
73 | reinstall = true; | |
8bc8de2c | 74 | |
c45fb58d DS |
75 | if (reinstall) { |
76 | static_zebra_route_add(rn, si, vrf->vrf_id, | |
77 | safi, true); | |
78 | reinstall = false; | |
8bc8de2c | 79 | } |
7e24fdf3 | 80 | } |
7e24fdf3 DS |
81 | } |
82 | } | |
c45fb58d DS |
83 | |
84 | void static_nht_update(struct prefix *p, uint32_t nh_num, afi_t afi, | |
85 | vrf_id_t nh_vrf_id) | |
86 | { | |
87 | ||
88 | struct vrf *vrf; | |
89 | ||
90 | RB_FOREACH (vrf, vrf_name_head, &vrfs_by_name) { | |
91 | static_nht_update_safi(p, nh_num, afi, SAFI_UNICAST, | |
92 | vrf, nh_vrf_id); | |
93 | static_nht_update_safi(p, nh_num, afi, SAFI_MULTICAST, | |
94 | vrf, nh_vrf_id); | |
95 | } | |
96 | } |