1: /*
2: * IS-IS Rout(e)ing protocol - isisd.h
3: *
4: * Copyright (C) 2001,2002 Sampo Saaristo
5: * Tampere University of Technology
6: * Institute of Communications Engineering
7: *
8: * This program is free software; you can redistribute it and/or modify it
9: * under the terms of the GNU General Public Licenseas published by the Free
10: * Software Foundation; either version 2 of the License, or (at your option)
11: * any later version.
12: *
13: * This program is distributed in the hope that it will be useful,but WITHOUT
14: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16: * more details.
17:
18: * You should have received a copy of the GNU General Public License along
19: * with this program; if not, write to the Free Software Foundation, Inc.,
20: * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21: */
22:
23: #ifndef ISISD_H
24: #define ISISD_H
25:
26: #define ISISD_VERSION "0.0.7"
27:
28: #include "isisd/isis_redist.h"
29:
30: /* uncomment if you are a developer in bug hunt */
31: /* #define EXTREME_DEBUG */
32: /* #define EXTREME_TLV_DEBUG */
33:
34: struct isis
35: {
36: u_long process_id;
37: int sysid_set;
38: u_char sysid[ISIS_SYS_ID_LEN]; /* SystemID for this IS */
39: u_int32_t router_id; /* Router ID from zebra */
40: struct list *area_list; /* list of IS-IS areas */
41: struct list *init_circ_list;
42: struct list *nexthops; /* IPv4 next hops from this IS */
43: #ifdef HAVE_IPV6
44: struct list *nexthops6; /* IPv6 next hops from this IS */
45: #endif /* HAVE_IPV6 */
46: u_char max_area_addrs; /* maximumAreaAdresses */
47: struct area_addr *man_area_addrs; /* manualAreaAddresses */
48: u_int32_t debugs; /* bitmap for debug */
49: time_t uptime; /* when did we start */
50: struct thread *t_dync_clean; /* dynamic hostname cache cleanup thread */
51:
52: struct route_table *ext_info[REDIST_PROTOCOL_COUNT];
53: };
54:
55: extern struct isis *isis;
56:
57: struct isis_area
58: {
59: struct isis *isis; /* back pointer */
60: dict_t *lspdb[ISIS_LEVELS]; /* link-state dbs */
61: struct isis_spftree *spftree[ISIS_LEVELS]; /* The v4 SPTs */
62: struct route_table *route_table[ISIS_LEVELS]; /* IPv4 routes */
63: #ifdef HAVE_IPV6
64: struct isis_spftree *spftree6[ISIS_LEVELS]; /* The v6 SPTs */
65: struct route_table *route_table6[ISIS_LEVELS]; /* IPv6 routes */
66: #endif
67: #define DEFAULT_LSP_MTU 1497
68: unsigned int lsp_mtu; /* Size of LSPs to generate */
69: struct list *circuit_list; /* IS-IS circuits */
70: struct flags flags;
71: struct thread *t_tick; /* LSP walker */
72: struct thread *t_lsp_refresh[ISIS_LEVELS];
73: /* t_lsp_refresh is used in two ways:
74: * a) regular refresh of LSPs
75: * b) (possibly throttled) updates to LSPs
76: *
77: * The lsp_regenerate_pending flag tracks whether the timer is active
78: * for the a) or the b) case.
79: *
80: * It is of utmost importance to clear this flag when the timer is
81: * rescheduled for normal refresh, because otherwise, updates will
82: * be delayed until the next regular refresh.
83: */
84: int lsp_regenerate_pending[ISIS_LEVELS];
85:
86: /*
87: * Configurables
88: */
89: struct isis_passwd area_passwd;
90: struct isis_passwd domain_passwd;
91: /* do we support dynamic hostnames? */
92: char dynhostname;
93: /* do we support new style metrics? */
94: char newmetric;
95: char oldmetric;
96: /* identifies the routing instance */
97: char *area_tag;
98: /* area addresses for this area */
99: struct list *area_addrs;
100: u_int16_t max_lsp_lifetime[ISIS_LEVELS];
101: char is_type; /* level-1 level-1-2 or level-2-only */
102: /* are we overloaded? */
103: char overload_bit;
104: /* L1/L2 router identifier for inter-area traffic */
105: char attached_bit;
106: u_int16_t lsp_refresh[ISIS_LEVELS];
107: /* minimum time allowed before lsp retransmission */
108: u_int16_t lsp_gen_interval[ISIS_LEVELS];
109: /* min interval between between consequtive SPFs */
110: u_int16_t min_spf_interval[ISIS_LEVELS];
111: /* the percentage of LSP mtu size used, before generating a new frag */
112: int lsp_frag_threshold;
113: int ip_circuits;
114: /* logging adjacency changes? */
115: u_char log_adj_changes;
116: #ifdef HAVE_IPV6
117: int ipv6_circuits;
118: #endif /* HAVE_IPV6 */
119: /* Counters */
120: u_int32_t circuit_state_changes;
121: struct isis_redist redist_settings[REDIST_PROTOCOL_COUNT]
122: [ZEBRA_ROUTE_MAX + 1][ISIS_LEVELS];
123: struct route_table *ext_reach[REDIST_PROTOCOL_COUNT][ISIS_LEVELS];
124:
125: #ifdef TOPOLOGY_GENERATE
126: struct list *topology;
127: u_char topology_baseis[ISIS_SYS_ID_LEN]; /* IS for the first IS emulated. */
128: char *topology_basedynh; /* Dynamic hostname base. */
129: char top_params[200]; /* FIXME: what is reasonable? */
130: #endif /* TOPOLOGY_GENERATE */
131: };
132:
133: void isis_init (void);
134: void isis_new(unsigned long);
135: struct isis_area *isis_area_create(const char *);
136: struct isis_area *isis_area_lookup (const char *);
137: int isis_area_get (struct vty *vty, const char *area_tag);
138: void print_debug(struct vty *, int, int);
139:
140: /* Master of threads. */
141: extern struct thread_master *master;
142:
143: #define DEBUG_ADJ_PACKETS (1<<0)
144: #define DEBUG_CHECKSUM_ERRORS (1<<1)
145: #define DEBUG_LOCAL_UPDATES (1<<2)
146: #define DEBUG_PROTOCOL_ERRORS (1<<3)
147: #define DEBUG_SNP_PACKETS (1<<4)
148: #define DEBUG_UPDATE_PACKETS (1<<5)
149: #define DEBUG_SPF_EVENTS (1<<6)
150: #define DEBUG_SPF_STATS (1<<7)
151: #define DEBUG_SPF_TRIGGERS (1<<8)
152: #define DEBUG_RTE_EVENTS (1<<9)
153: #define DEBUG_EVENTS (1<<10)
154: #define DEBUG_ZEBRA (1<<11)
155: #define DEBUG_PACKET_DUMP (1<<12)
156: #define DEBUG_LSP_GEN (1<<13)
157: #define DEBUG_LSP_SCHED (1<<14)
158:
159: #define lsp_debug(...) \
160: do \
161: { \
162: if (isis->debugs & DEBUG_LSP_GEN) \
163: zlog_debug(__VA_ARGS__); \
164: } \
165: while (0)
166:
167: #define sched_debug(...) \
168: do \
169: { \
170: if (isis->debugs & DEBUG_LSP_SCHED) \
171: zlog_debug(__VA_ARGS__); \
172: } \
173: while (0)
174:
175: #endif /* ISISD_H */
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