1: /*
2: * IS-IS Rout(e)ing protocol - isis_circuit.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 ISIS_CIRCUIT_H
24: #define ISIS_CIRCUIT_H
25:
26: #define CIRCUIT_MAX 255
27:
28: struct password
29: {
30: struct password *next;
31: int len;
32: u_char *pass;
33: };
34:
35: struct metric
36: {
37: u_char metric_default;
38: u_char metric_error;
39: u_char metric_expense;
40: u_char metric_delay;
41: };
42:
43: struct isis_bcast_info
44: {
45: u_char snpa[ETH_ALEN]; /* SNPA of this circuit */
46: char run_dr_elect[2]; /* Should we run dr election ? */
47: struct thread *t_run_dr[2]; /* DR election thread */
48: struct thread *t_send_lan_hello[2]; /* send LAN IIHs in this thread */
49: struct list *adjdb[2]; /* adjacency dbs */
50: struct list *lan_neighs[2]; /* list of lx neigh snpa */
51: char is_dr[2]; /* Are we level x DR ? */
52: u_char l1_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-1 DR */
53: u_char l2_desig_is[ISIS_SYS_ID_LEN + 1]; /* level-2 DR */
54: struct thread *t_refresh_pseudo_lsp[2]; /* refresh pseudo-node LSPs */
55: int pad_hellos; /* add padding to Hello PDUs ? */
56: u_char priority[2]; /* l1/2 IS Priority */
57: };
58:
59: struct isis_p2p_info
60: {
61: struct isis_adjacency *neighbor;
62: struct thread *t_send_p2p_hello; /* send P2P IIHs in this thread */
63: };
64:
65: struct isis_circuit
66: {
67: int state;
68: u_char circuit_id; /* l1/l2 p2p/bcast CircuitID */
69: struct isis_area *area; /* back pointer to the area */
70: struct interface *interface; /* interface info from z */
71: int fd; /* IS-IS l1/2 socket */
72: int sap_length; /* SAP length for DLPI */
73: struct nlpids nlpids;
74: /*
75: * Threads
76: */
77: struct thread *t_read;
78: struct thread *t_send_csnp[2];
79: struct thread *t_send_psnp[2];
80: struct list *lsp_queue; /* LSPs to be txed (both levels) */
81: /* there is no real point in two streams, just for programming kicker */
82: int (*rx) (struct isis_circuit * circuit, u_char * ssnpa);
83: struct stream *rcv_stream; /* Stream for receiving */
84: int (*tx) (struct isis_circuit * circuit, int level);
85: struct stream *snd_stream; /* Stream for sending */
86: int idx; /* idx in S[RM|SN] flags */
87: #define CIRCUIT_T_BROADCAST 0
88: #define CIRCUIT_T_P2P 1
89: #define CIRCUIT_T_STATIC_IN 2
90: #define CIRCUIT_T_STATIC_OUT 3
91: #define CIRCUIT_T_DA 4
92: int circ_type; /* type of the physical interface */
93: union
94: {
95: struct isis_bcast_info bc;
96: struct isis_p2p_info p2p;
97: } u;
98: char ext_domain; /* externalDomain (boolean) */
99: /*
100: * Configurables
101: */
102: struct isis_passwd passwd; /* Circuit rx/tx password */
103: long lsp_interval;
104: int manual_l2_only; /* manualL2OnlyMode (boolean) */
105: int circuit_is_type; /* circuit is type == level of circuit
106: * diffrenciated from circuit type (media) */
107: u_int32_t hello_interval[2]; /* l1HelloInterval in msecs */
108: u_int16_t hello_multiplier[2]; /* l1HelloMultiplier */
109: u_int16_t csnp_interval[2]; /* level-1 csnp-interval in seconds */
110: u_int16_t psnp_interval[2]; /* level-1 psnp-interval in seconds */
111: struct metric metrics[2]; /* l1XxxMetric */
112: u_int32_t te_metric[2];
113: struct password *c_rx_passwds; /* circuitReceivePasswords */
114: struct password *c_tc_passwd; /* circuitTransmitPassword */
115: int ip_router; /* Route IP ? */
116: struct list *ip_addrs; /* our IP addresses */
117: #ifdef HAVE_IPV6
118: int ipv6_router; /* Route IPv6 ? */
119: struct list *ipv6_link; /* our link local IPv6 addresses */
120: struct list *ipv6_non_link; /* our non-link local IPv6 addresses */
121: #endif /* HAVE_IPV6 */
122: /*
123: * RFC 2973 IS-IS Mesh Groups
124: */
125: #define MESH_INACTIVE 0
126: #define MESH_BLOCKED 1
127: #define MESH_SET 2
128: int mesh_enabled; /* meshGroupEnabled */
129: u_int16_t mesh_group; /* meshGroup */
130: u_int16_t upadjcount[2];
131: /*
132: * Counters as in 10589--11.2.5.9
133: */
134: u_int32_t adj_state_changes; /* changesInAdjacencyState */
135: u_int32_t init_failures; /* intialisationFailures */
136: u_int32_t ctrl_pdus_rxed; /* controlPDUsReceived */
137: u_int32_t ctrl_pdus_txed; /* controlPDUsSent */
138: u_int32_t desig_changes[2]; /* lanLxDesignatedIntermediateSystemChanges */
139: u_int32_t rej_adjacencies; /* rejectedAdjacencies */
140: };
141:
142: void isis_circuit_init (void);
143: struct isis_circuit *isis_circuit_new (void);
144: struct isis_circuit *circuit_lookup_by_ifp (struct interface *ifp,
145: struct list *list);
146: struct isis_circuit *circuit_scan_by_ifp (struct interface *ifp);
147: void isis_circuit_del (struct isis_circuit *circuit);
148: void isis_circuit_configure (struct isis_circuit *circuit,
149: struct isis_area *area);
150: void isis_circuit_up (struct isis_circuit *circuit);
151: void isis_circuit_deconfigure (struct isis_circuit *circuit,
152: struct isis_area *area);
153:
154: int isis_circuit_destroy (struct isis_circuit *circuit);
155: void isis_circuit_if_add (struct isis_circuit *circuit,
156: struct interface *ifp);
157: void isis_circuit_if_del (struct isis_circuit *circuit);
158: void circuit_update_nlpids (struct isis_circuit *circuit);
159: void isis_circuit_update_params (struct isis_circuit *circuit,
160: struct interface *ifp);
161: void isis_circuit_add_addr (struct isis_circuit *circuit,
162: struct connected *conn);
163: void isis_circuit_del_addr (struct isis_circuit *circuit,
164: struct connected *conn);
165: #endif /* _ZEBRA_ISIS_CIRCUIT_H */
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