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718e3744 | 1 | /* Zebra's client header. |
2 | * Copyright (C) 1999 Kunihiro Ishiguro | |
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 | |
8 | * the Free Software Foundation; either version 2, or (at your option) | |
9 | * any 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 | |
18 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | * Boston, MA 02111-1307, USA. | |
20 | */ | |
21 | ||
22 | #ifndef _ZEBRA_ZCLIENT_H | |
23 | #define _ZEBRA_ZCLIENT_H | |
24 | ||
25 | /* For struct interface and struct connected. */ | |
26 | #include "if.h" | |
27 | ||
28 | /* For input/output buffer to zebra. */ | |
29 | #define ZEBRA_MAX_PACKET_SIZ 4096 | |
30 | ||
31 | /* Zebra header size. */ | |
c1b9800a | 32 | #define ZEBRA_HEADER_SIZE 6 |
718e3744 | 33 | |
34 | /* Structure for the zebra client. */ | |
35 | struct zclient | |
36 | { | |
37 | /* Socket to zebra daemon. */ | |
38 | int sock; | |
39 | ||
40 | /* Flag of communication to zebra is enabled or not. Default is on. | |
41 | This flag is disabled by `no router zebra' statement. */ | |
42 | int enable; | |
43 | ||
44 | /* Connection failure count. */ | |
45 | int fail; | |
46 | ||
47 | /* Input buffer for zebra message. */ | |
48 | struct stream *ibuf; | |
49 | ||
50 | /* Output buffer for zebra message. */ | |
51 | struct stream *obuf; | |
52 | ||
634f9ea2 | 53 | /* Buffer of data waiting to be written to zebra. */ |
54 | struct buffer *wb; | |
55 | ||
718e3744 | 56 | /* Read and connect thread. */ |
57 | struct thread *t_read; | |
58 | struct thread *t_connect; | |
59 | ||
634f9ea2 | 60 | /* Thread to write buffered data to zebra. */ |
61 | struct thread *t_write; | |
62 | ||
718e3744 | 63 | /* Redistribute information. */ |
64 | u_char redist_default; | |
65 | u_char redist[ZEBRA_ROUTE_MAX]; | |
66 | ||
67 | /* Redistribute defauilt. */ | |
68 | u_char default_information; | |
69 | ||
70 | /* Pointer to the callback functions. */ | |
c1b9800a | 71 | int (*router_id_update) (int, struct zclient *, uint16_t); |
72 | int (*interface_add) (int, struct zclient *, uint16_t); | |
73 | int (*interface_delete) (int, struct zclient *, uint16_t); | |
74 | int (*interface_up) (int, struct zclient *, uint16_t); | |
75 | int (*interface_down) (int, struct zclient *, uint16_t); | |
76 | int (*interface_address_add) (int, struct zclient *, uint16_t); | |
77 | int (*interface_address_delete) (int, struct zclient *, uint16_t); | |
78 | int (*ipv4_route_add) (int, struct zclient *, uint16_t); | |
79 | int (*ipv4_route_delete) (int, struct zclient *, uint16_t); | |
80 | int (*ipv6_route_add) (int, struct zclient *, uint16_t); | |
81 | int (*ipv6_route_delete) (int, struct zclient *, uint16_t); | |
718e3744 | 82 | }; |
83 | ||
84 | /* Zebra API message flag. */ | |
85 | #define ZAPI_MESSAGE_NEXTHOP 0x01 | |
86 | #define ZAPI_MESSAGE_IFINDEX 0x02 | |
87 | #define ZAPI_MESSAGE_DISTANCE 0x04 | |
88 | #define ZAPI_MESSAGE_METRIC 0x08 | |
89 | ||
c1b9800a | 90 | /* Zserv protocol message header */ |
91 | struct zserv_header | |
92 | { | |
93 | uint16_t length; | |
94 | uint8_t marker; /* corresponds to command field in old zserv | |
95 | * always set to 255 in new zserv. | |
96 | */ | |
97 | uint8_t version; | |
98 | #define ZSERV_VERSION 1 | |
99 | uint16_t command; | |
100 | }; | |
101 | ||
718e3744 | 102 | /* Zebra IPv4 route message API. */ |
103 | struct zapi_ipv4 | |
104 | { | |
105 | u_char type; | |
106 | ||
107 | u_char flags; | |
108 | ||
109 | u_char message; | |
110 | ||
111 | u_char nexthop_num; | |
112 | struct in_addr **nexthop; | |
113 | ||
114 | u_char ifindex_num; | |
115 | unsigned int *ifindex; | |
116 | ||
117 | u_char distance; | |
118 | ||
119 | u_int32_t metric; | |
120 | }; | |
121 | ||
718e3744 | 122 | /* Prototypes of zebra client service functions. */ |
8cc4198f | 123 | extern struct zclient *zclient_new (void); |
124 | extern void zclient_init (struct zclient *, int); | |
125 | extern int zclient_start (struct zclient *); | |
126 | extern void zclient_stop (struct zclient *); | |
127 | extern void zclient_reset (struct zclient *); | |
634f9ea2 | 128 | |
129 | /* Get TCP socket connection to zebra daemon at loopback address. */ | |
8cc4198f | 130 | extern int zclient_socket (void); |
634f9ea2 | 131 | |
132 | /* Get unix stream socket connection to zebra daemon at given path. */ | |
8cc4198f | 133 | extern int zclient_socket_un (const char *); |
718e3744 | 134 | |
634f9ea2 | 135 | /* Send redistribute command to zebra daemon. Do not update zclient state. */ |
8cc4198f | 136 | extern int zebra_redistribute_send (int command, struct zclient *, int type); |
634f9ea2 | 137 | |
138 | /* If state has changed, update state and call zebra_redistribute_send. */ | |
8cc4198f | 139 | extern void zclient_redistribute (int command, struct zclient *, int type); |
634f9ea2 | 140 | |
141 | /* If state has changed, update state and send the command to zebra. */ | |
8cc4198f | 142 | extern void zclient_redistribute_default (int command, struct zclient *); |
718e3744 | 143 | |
634f9ea2 | 144 | /* Send the message in zclient->obuf to the zebra daemon (or enqueue it). |
145 | Returns 0 for success or -1 on an I/O error. */ | |
146 | extern int zclient_send_message(struct zclient *); | |
718e3744 | 147 | |
d211086a | 148 | /* create header for command, length to be filled in by user later */ |
149 | extern void zclient_create_header (struct stream *, uint16_t); | |
150 | ||
8cc4198f | 151 | extern struct interface *zebra_interface_add_read (struct stream *); |
152 | extern struct interface *zebra_interface_state_read (struct stream *s); | |
153 | extern struct connected *zebra_interface_address_read (int, struct stream *); | |
154 | extern void zebra_interface_if_set_value (struct stream *, struct interface *); | |
155 | extern void zebra_router_id_update_read (struct stream *s, struct prefix *rid); | |
156 | extern int zapi_ipv4_route (u_char, struct zclient *, struct prefix_ipv4 *, | |
157 | struct zapi_ipv4 *); | |
718e3744 | 158 | |
159 | #ifdef HAVE_IPV6 | |
160 | /* IPv6 prefix add and delete function prototype. */ | |
161 | ||
162 | struct zapi_ipv6 | |
163 | { | |
164 | u_char type; | |
165 | ||
166 | u_char flags; | |
167 | ||
168 | u_char message; | |
169 | ||
170 | u_char nexthop_num; | |
171 | struct in6_addr **nexthop; | |
172 | ||
173 | u_char ifindex_num; | |
174 | unsigned int *ifindex; | |
175 | ||
176 | u_char distance; | |
177 | ||
178 | u_int32_t metric; | |
179 | }; | |
180 | ||
8cc4198f | 181 | extern int zapi_ipv6_route (u_char cmd, struct zclient *zclient, |
0a589359 | 182 | struct prefix_ipv6 *p, struct zapi_ipv6 *api); |
718e3744 | 183 | #endif /* HAVE_IPV6 */ |
184 | ||
185 | #endif /* _ZEBRA_ZCLIENT_H */ |