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1 | /* |
2 | * PIM for FRR - PIM Instance | |
3 | * Copyright (C) 2017 Cumulus Networks, Inc. | |
4 | * Donald Sharp | |
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 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; see the file COPYING; if not, write to the | |
18 | * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, | |
19 | * MA 02110-1301 USA | |
20 | */ | |
21 | #include <zebra.h> | |
22 | ||
23 | #include "hash.h" | |
24 | #include "vrf.h" | |
25 | ||
26 | #include "pimd.h" | |
27 | #include "pim_ssm.h" | |
28 | #include "pim_rpf.h" | |
29 | #include "pim_rp.h" | |
30 | #include "pim_mroute.h" | |
31 | ||
32 | static void pim_instance_terminate(struct pim_instance *pim) | |
33 | { | |
34 | /* Traverse and cleanup rpf_hash */ | |
35 | if (pim->rpf_hash) { | |
36 | hash_clean(pim->rpf_hash, (void *)pim_rp_list_hash_clean); | |
37 | hash_free(pim->rpf_hash); | |
38 | pim->rpf_hash = NULL; | |
39 | } | |
40 | ||
41 | if (pim->ssm_info) { | |
42 | pim_ssm_terminate(pim->ssm_info); | |
43 | pim->ssm_info = NULL; | |
44 | } | |
45 | ||
46 | XFREE(MTYPE_PIM_PIM_INSTANCE, pimg); | |
47 | } | |
48 | ||
49 | static struct pim_instance *pim_instance_init(struct vrf *vrf) | |
50 | { | |
51 | struct pim_instance *pim; | |
52 | ||
53 | pim = XCALLOC(MTYPE_PIM_PIM_INSTANCE, sizeof(struct pim_instance)); | |
54 | if (!pim) | |
55 | return NULL; | |
56 | ||
57 | pim->vrf_id = vrf->vrf_id; | |
58 | pim->vrf = vrf; | |
59 | ||
60 | pim->spt.switchover = PIM_SPT_IMMEDIATE; | |
61 | pim->spt.plist = NULL; | |
62 | ||
63 | pim->rpf_hash = | |
64 | hash_create_size(256, pim_rpf_hash_key, pim_rpf_equal, NULL); | |
65 | ||
66 | if (PIM_DEBUG_ZEBRA) | |
67 | zlog_debug("%s: NHT rpf hash init ", __PRETTY_FUNCTION__); | |
68 | ||
69 | pim->ssm_info = pim_ssm_init(); | |
70 | if (!pim->ssm_info) { | |
71 | pim_instance_terminate(pim); | |
72 | return NULL; | |
73 | } | |
74 | ||
75 | pim->send_v6_secondary = 1; | |
76 | ||
77 | if (vrf->vrf_id == VRF_DEFAULT) | |
78 | pimg = pim; | |
79 | ||
80 | pim_mroute_socket_enable(pim); | |
81 | ||
82 | return pim; | |
83 | } | |
84 | ||
85 | struct pim_instance *pim_get_pim_instance(vrf_id_t vrf_id) | |
86 | { | |
87 | struct vrf *vrf = vrf_lookup_by_id(vrf_id); | |
88 | ||
89 | if (vrf) | |
90 | return vrf->info; | |
91 | ||
92 | return NULL; | |
93 | } | |
94 | ||
95 | static int pim_vrf_new(struct vrf *vrf) | |
96 | { | |
97 | zlog_debug("VRF Created: %s(%d)", vrf->name, vrf->vrf_id); | |
98 | return 0; | |
99 | } | |
100 | ||
101 | static int pim_vrf_delete(struct vrf *vrf) | |
102 | { | |
103 | zlog_debug("VRF Deletion: %s(%d)", vrf->name, vrf->vrf_id); | |
104 | return 0; | |
105 | } | |
106 | ||
107 | static int pim_vrf_enable(struct vrf *vrf) | |
108 | { | |
109 | struct pim_instance *pim; | |
110 | ||
111 | zlog_debug("%s: for %s", __PRETTY_FUNCTION__, vrf->name); | |
112 | pim = pim_instance_init(vrf); | |
113 | if (pim == NULL) { | |
114 | zlog_err("%s %s: pim class init failure ", __FILE__, | |
115 | __PRETTY_FUNCTION__); | |
116 | /* | |
117 | * We will crash and burn otherwise | |
118 | */ | |
119 | exit(1); | |
120 | } | |
121 | ||
122 | vrf->info = (void *)pim; | |
123 | ||
124 | if (vrf->vrf_id == VRF_DEFAULT) | |
125 | pimg = pim; | |
126 | ||
127 | return 0; | |
128 | } | |
129 | ||
130 | static int pim_vrf_disable(struct vrf *vrf) | |
131 | { | |
132 | pim_instance_terminate((struct pim_instance *)vrf->info); | |
133 | ||
134 | /* Note: This is a callback, the VRF will be deleted by the caller. */ | |
135 | return 0; | |
136 | } | |
137 | ||
138 | void pim_vrf_init(void) | |
139 | { | |
140 | vrf_init(pim_vrf_new, pim_vrf_enable, pim_vrf_disable, pim_vrf_delete); | |
141 | } | |
142 | ||
143 | void pim_vrf_terminate(void) | |
144 | { | |
145 | vrf_terminate(); | |
146 | } |