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1 | /** |
2 | * @copyright Copyright (C) 2015 Cumulus Networks, Inc. | |
3 | * | |
4 | * This file is part of GNU Zebra. | |
5 | * | |
6 | * GNU Zebra 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 | |
8 | * Free Software Foundation; either version 2, or (at your option) any | |
9 | * later version. | |
10 | * | |
11 | * GNU Zebra 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 GNU Zebra; see the file COPYING. If not, write to the Free | |
18 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
19 | * 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #include <zebra.h> | |
23 | #include "prefix.h" | |
24 | #include "vty.h" | |
25 | #include "stream.h" | |
26 | #include "zebra/zserv.h" | |
27 | ||
28 | /* master zebra server structure */ | |
29 | extern struct zebra_t zebrad; | |
30 | ||
31 | int | |
32 | zsend_interface_bfd_update (int cmd, struct zserv *client, | |
33 | struct interface *ifp, struct prefix *dp, | |
34 | struct prefix *sp) | |
35 | { | |
36 | int blen; | |
37 | struct stream *s; | |
38 | ||
39 | /* Check this client need interface information. */ | |
40 | if (! client->ifinfo) | |
41 | return 0; | |
42 | ||
43 | s = client->obuf; | |
44 | stream_reset (s); | |
45 | ||
46 | zserv_create_header (s, cmd); | |
47 | if (ifp) | |
48 | stream_putl (s, ifp->ifindex); | |
49 | else | |
50 | stream_putl (s, 0); | |
51 | ||
52 | /* BFD destination prefix information. */ | |
53 | stream_putc (s, dp->family); | |
54 | blen = prefix_blen (dp); | |
55 | stream_put (s, &dp->u.prefix, blen); | |
56 | stream_putc (s, dp->prefixlen); | |
57 | ||
58 | /* BFD source prefix information. */ | |
59 | stream_putc (s, sp->family); | |
60 | blen = prefix_blen (sp); | |
61 | stream_put (s, &sp->u.prefix, blen); | |
62 | stream_putc (s, sp->prefixlen); | |
63 | ||
64 | /* Write packet size. */ | |
65 | stream_putw_at (s, 0, stream_get_endp (s)); | |
66 | ||
67 | client->if_bfd_cnt++; | |
68 | return zebra_server_send_message(client); | |
69 | } | |
70 | ||
71 | void | |
72 | zebra_interface_bfd_update (struct interface *ifp, struct prefix *dp, | |
73 | struct prefix *sp) | |
74 | { | |
75 | struct listnode *node, *nnode; | |
76 | struct zserv *client; | |
77 | ||
78 | for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client)) | |
79 | { | |
80 | /* Supporting for OSPF and BGP */ | |
7f342629 DS |
81 | if (client->proto != ZEBRA_ROUTE_OSPF && client->proto != ZEBRA_ROUTE_BGP |
82 | && client->proto != ZEBRA_ROUTE_OSPF6) | |
c43ed2e4 DS |
83 | continue; |
84 | ||
85 | /* Notify to the protocol daemons. */ | |
86 | zsend_interface_bfd_update (ZEBRA_INTERFACE_BFD_DEST_DOWN, client, ifp, | |
87 | dp, sp); | |
88 | } | |
89 | } | |
90 | ||
91 | int | |
92 | zsend_bfd_peer_replay (int cmd, struct zserv *client) | |
93 | { | |
94 | struct stream *s; | |
95 | ||
96 | s = client->obuf; | |
97 | stream_reset (s); | |
98 | ||
99 | zserv_create_header (s, cmd); | |
100 | ||
101 | /* Write packet size. */ | |
102 | stream_putw_at (s, 0, stream_get_endp (s)); | |
103 | ||
104 | client->bfd_peer_replay_cnt++; | |
105 | return zebra_server_send_message(client); | |
106 | } | |
107 | ||
108 | void | |
109 | zebra_bfd_peer_replay_req (void) | |
110 | { | |
111 | struct listnode *node, *nnode; | |
112 | struct zserv *client; | |
113 | ||
114 | for (ALL_LIST_ELEMENTS (zebrad.client_list, node, nnode, client)) | |
115 | { | |
116 | /* Supporting for BGP */ | |
7f342629 DS |
117 | if ((client->proto != ZEBRA_ROUTE_BGP) && |
118 | (client->proto != ZEBRA_ROUTE_OSPF) && | |
119 | (client->proto != ZEBRA_ROUTE_OSPF6)) | |
c43ed2e4 DS |
120 | continue; |
121 | ||
122 | /* Notify to the protocol daemons. */ | |
123 | zsend_bfd_peer_replay (ZEBRA_BFD_DEST_REPLAY, client); | |
124 | } | |
125 | } |