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Commit | Line | Data |
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718e3744 | 1 | /* |
2 | * OSPF version 2 Interface State Machine. | |
3 | * From RFC2328 [OSPF Version 2] | |
4 | * Copyright (C) 1999 Toshiaki Takada | |
5 | * | |
6 | * This file is part of GNU Zebra. | |
7 | * | |
8 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | * | |
13 | * GNU Zebra is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with GNU Zebra; see the file COPYING. If not, write to the Free | |
20 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA | |
21 | * 02111-1307, USA. | |
22 | */ | |
23 | ||
24 | #ifndef _ZEBRA_OSPF_ISM_H | |
25 | #define _ZEBRA_OSPF_ISM_H | |
26 | ||
27 | /* OSPF Interface State Machine Status. */ | |
28 | #define ISM_DependUpon 0 | |
29 | #define ISM_Down 1 | |
30 | #define ISM_Loopback 2 | |
31 | #define ISM_Waiting 3 | |
32 | #define ISM_PointToPoint 4 | |
33 | #define ISM_DROther 5 | |
34 | #define ISM_Backup 6 | |
35 | #define ISM_DR 7 | |
36 | #define OSPF_ISM_STATE_MAX 8 | |
37 | ||
ba682537 | 38 | /* Because DR/DROther values are exhanged wrt RFC */ |
39 | #define ISM_SNMP(x) (((x) == ISM_DROther) ? ISM_DR : \ | |
40 | ((x) == ISM_DR) ? ISM_DROther : (x)) | |
41 | ||
718e3744 | 42 | /* OSPF Interface State Machine Event. */ |
43 | #define ISM_NoEvent 0 | |
44 | #define ISM_InterfaceUp 1 | |
45 | #define ISM_WaitTimer 2 | |
46 | #define ISM_BackupSeen 3 | |
47 | #define ISM_NeighborChange 4 | |
48 | #define ISM_LoopInd 5 | |
49 | #define ISM_UnloopInd 6 | |
50 | #define ISM_InterfaceDown 7 | |
51 | #define OSPF_ISM_EVENT_MAX 8 | |
52 | ||
4dadc291 | 53 | #define OSPF_ISM_WRITE_ON(O) \ |
718e3744 | 54 | do \ |
55 | { \ | |
56 | if (oi->on_write_q == 0) \ | |
57 | { \ | |
4dadc291 | 58 | listnode_add ((O)->oi_write_q, oi); \ |
718e3744 | 59 | oi->on_write_q = 1; \ |
60 | } \ | |
4dadc291 | 61 | if ((O)->t_write == NULL) \ |
62 | (O)->t_write = \ | |
63 | thread_add_write (master, ospf_write, (O), (O)->fd); \ | |
718e3744 | 64 | } while (0) |
65 | ||
66 | /* Macro for OSPF ISM timer turn on. */ | |
67 | #define OSPF_ISM_TIMER_ON(T,F,V) \ | |
f9ad937f | 68 | do { \ |
69 | if (!(T)) \ | |
70 | (T) = thread_add_timer (master, (F), oi, (V)); \ | |
71 | } while (0) | |
72 | #define OSPF_ISM_TIMER_MSEC_ON(T,F,V) \ | |
73 | do { \ | |
74 | if (!(T)) \ | |
75 | (T) = thread_add_timer_msec (master, (F), oi, (V)); \ | |
76 | } while (0) | |
77 | ||
78 | /* convenience macro to set hello timer correctly, according to | |
79 | * whether fast-hello is set or not | |
80 | */ | |
81 | #define OSPF_HELLO_TIMER_ON(O) \ | |
82 | do { \ | |
83 | if (OSPF_IF_PARAM ((O), fast_hello)) \ | |
84 | OSPF_ISM_TIMER_MSEC_ON ((O)->t_hello, ospf_hello_timer, \ | |
85 | 1000 / OSPF_IF_PARAM ((O), fast_hello)); \ | |
86 | else \ | |
87 | OSPF_ISM_TIMER_ON ((O)->t_hello, ospf_hello_timer, \ | |
88 | OSPF_IF_PARAM ((O), v_hello)); \ | |
89 | } while (0) | |
718e3744 | 90 | |
91 | /* Macro for OSPF ISM timer turn off. */ | |
92 | #define OSPF_ISM_TIMER_OFF(X) \ | |
70cd3474 | 93 | do { \ |
94 | if (X) \ | |
95 | { \ | |
96 | thread_cancel (X); \ | |
97 | (X) = NULL; \ | |
98 | } \ | |
99 | } while (0) | |
718e3744 | 100 | |
101 | /* Macro for OSPF schedule event. */ | |
102 | #define OSPF_ISM_EVENT_SCHEDULE(I,E) \ | |
103 | thread_add_event (master, ospf_ism_event, (I), (E)) | |
104 | ||
105 | /* Macro for OSPF execute event. */ | |
106 | #define OSPF_ISM_EVENT_EXECUTE(I,E) \ | |
107 | thread_execute (master, ospf_ism_event, (I), (E)) | |
108 | ||
109 | /* Prototypes. */ | |
4dadc291 | 110 | extern int ospf_ism_event (struct thread *); |
111 | extern void ism_change_status (struct ospf_interface *, int); | |
112 | extern int ospf_hello_timer (struct thread *thread); | |
718e3744 | 113 | |
114 | #endif /* _ZEBRA_OSPF_ISM_H */ |