Annotation of embedaddon/quagga/babeld/babel_interface.h, revision 1.1.1.1
1.1 misho 1: /*
2: * This file is free software: you may copy, redistribute and/or modify it
3: * under the terms of the GNU General Public License as published by the
4: * Free Software Foundation, either version 2 of the License, or (at your
5: * option) any later version.
6: *
7: * This file is distributed in the hope that it will be useful, but
8: * WITHOUT ANY WARRANTY; without even the implied warranty of
9: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10: * General Public License for more details.
11: *
12: * You should have received a copy of the GNU General Public License
13: * along with this program. If not, see <http://www.gnu.org/licenses/>.
14: *
15: * This file incorporates work covered by the following copyright and
16: * permission notice:
17: *
18: Copyright 2011 by Matthieu Boutier and Juliusz Chroboczek
19:
20: Permission is hereby granted, free of charge, to any person obtaining a copy
21: of this software and associated documentation files (the "Software"), to deal
22: in the Software without restriction, including without limitation the rights
23: to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
24: copies of the Software, and to permit persons to whom the Software is
25: furnished to do so, subject to the following conditions:
26:
27: The above copyright notice and this permission notice shall be included in
28: all copies or substantial portions of the Software.
29:
30: THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
31: IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
32: FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
33: AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
34: LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
35: OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
36: THE SOFTWARE.
37: */
38:
39: #ifndef BABEL_INTERFACE_H
40: #define BABEL_INTERFACE_H
41:
42: #include <zebra.h>
43: #include "zclient.h"
44: #include "vty.h"
45:
46: #define CONFIG_DEFAULT 0
47: #define CONFIG_NO 1
48: #define CONFIG_YES 2
49:
50: /* babeld interface informations */
51: struct babel_interface {
52: unsigned short flags; /* see below */
53: unsigned short cost;
54: int channel;
55: struct timeval hello_timeout;
56: struct timeval update_timeout;
57: struct timeval flush_timeout;
58: struct timeval update_flush_timeout;
59: unsigned char *ipv4;
60: int buffered;
61: int bufsize;
62: char have_buffered_hello;
63: char have_buffered_id;
64: char have_buffered_nh;
65: char have_buffered_prefix;
66: unsigned char buffered_id[16];
67: unsigned char buffered_nh[4];
68: unsigned char buffered_prefix[16];
69: unsigned char *sendbuf;
70: struct buffered_update *buffered_updates;
71: int num_buffered_updates;
72: int update_bufsize;
73: time_t bucket_time;
74: unsigned int bucket;
75: time_t last_update_time;
76: unsigned short hello_seqno;
77: unsigned hello_interval;
78: unsigned update_interval;
79:
80: /* For filter type slot. */
81: #define BABEL_FILTER_IN 0
82: #define BABEL_FILTER_OUT 1
83: #define BABEL_FILTER_MAX 2
84: struct access_list *list[BABEL_FILTER_MAX]; /* Access-list. */
85: struct prefix_list *prefix[BABEL_FILTER_MAX]; /* Prefix-list. */
86: };
87:
88: typedef struct babel_interface babel_interface_nfo;
89: static inline babel_interface_nfo* babel_get_if_nfo(struct interface *ifp)
90: {
91: return ((babel_interface_nfo*) ifp->info);
92: }
93:
94: /* babel_interface_nfo flags */
95: #define BABEL_IF_IS_UP (1 << 0)
96: #define BABEL_IF_WIRED (1 << 1)
97: #define BABEL_IF_SPLIT_HORIZON (1 << 2)
98: #define BABEL_IF_LQ (1 << 3)
99: #define BABEL_IF_FARAWAY (1 << 4)
100:
101: /* Only INTERFERING can appear on the wire. */
102: #define BABEL_IF_CHANNEL_UNKNOWN 0
103: #define BABEL_IF_CHANNEL_INTERFERING 255
104: #define BABEL_IF_CHANNEL_NONINTERFERING -2
105:
106: static inline int
107: if_up(struct interface *ifp)
108: {
109: return (if_is_operative(ifp) &&
110: ifp->connected != NULL &&
111: (babel_get_if_nfo(ifp)->flags & BABEL_IF_IS_UP));
112: }
113:
114: /* types:
115: struct interface _ifp, struct listnode node */
116: #define FOR_ALL_INTERFACES(_ifp, _node) \
117: for(ALL_LIST_ELEMENTS_RO(iflist, _node, _ifp))
118:
119: /* types:
120: struct interface *ifp, struct connected *_connected, struct listnode *node */
121: #define FOR_ALL_INTERFACES_ADDRESSES(ifp, _connected, _node) \
122: for(ALL_LIST_ELEMENTS_RO(ifp->connected, _node, _connected))
123:
124: struct buffered_update {
125: unsigned char id[8];
126: unsigned char prefix[16];
127: unsigned char plen;
128: unsigned char pad[3];
129: };
130:
131:
132: /* init function */
133: void babel_if_init(void);
134:
135: /* Callback functions for zebra client */
136: int babel_interface_up (int, struct zclient *, zebra_size_t);
137: int babel_interface_down (int, struct zclient *, zebra_size_t);
138: int babel_interface_add (int, struct zclient *, zebra_size_t);
139: int babel_interface_delete (int, struct zclient *, zebra_size_t);
140: int babel_interface_address_add (int, struct zclient *, zebra_size_t);
141: int babel_interface_address_delete (int, struct zclient *, zebra_size_t);
142:
143: unsigned jitter(babel_interface_nfo *, int);
144: unsigned update_jitter(babel_interface_nfo *babel_ifp, int urgent);
145: /* return "true" if "address" is one of our ipv6 addresses */
146: int is_interface_ll_address(struct interface *ifp, const unsigned char *address);
147: /* Send retraction to all, and reset all interfaces statistics. */
148: void babel_interface_close_all(void);
149: extern int babel_enable_if_config_write (struct vty *);
150:
151:
152: #endif
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