1: /* Interface function 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 the
8: * Free Software Foundation; either version 2, or (at your option) any
9: * 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 Free
18: * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
19: * 02111-1307, USA.
20: */
21:
22: #ifndef _ZEBRA_INTERFACE_H
23: #define _ZEBRA_INTERFACE_H
24:
25: #include "redistribute.h"
26:
27: #ifdef HAVE_IRDP
28: #include "zebra/irdp.h"
29: #endif
30:
31: /* For interface multicast configuration. */
32: #define IF_ZEBRA_MULTICAST_UNSPEC 0
33: #define IF_ZEBRA_MULTICAST_ON 1
34: #define IF_ZEBRA_MULTICAST_OFF 2
35:
36: /* For interface shutdown configuration. */
37: #define IF_ZEBRA_SHUTDOWN_UNSPEC 0
38: #define IF_ZEBRA_SHUTDOWN_ON 1
39: #define IF_ZEBRA_SHUTDOWN_OFF 2
40:
41: /* Router advertisement feature. */
42: #if (defined(LINUX_IPV6) && (defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1)) || defined(KAME)
43: #ifdef HAVE_RTADV
44: #define RTADV
45: #endif
46: #endif
47:
48: #ifdef RTADV
49: /* Router advertisement parameter. From RFC2461, RFC3775 and RFC4191. */
50: struct rtadvconf
51: {
52: /* A flag indicating whether or not the router sends periodic Router
53: Advertisements and responds to Router Solicitations.
54: Default: FALSE */
55: int AdvSendAdvertisements;
56:
57: /* The maximum time allowed between sending unsolicited multicast
58: Router Advertisements from the interface, in milliseconds.
59: MUST be no less than 70 ms (RFC3775, section 7.4) and no greater
60: than 1800000 ms (See RFC2461).
61:
62: Default: 600000 milliseconds */
63: int MaxRtrAdvInterval;
64: #define RTADV_MAX_RTR_ADV_INTERVAL 600000
65:
66: /* The minimum time allowed between sending unsolicited multicast
67: Router Advertisements from the interface, in milliseconds.
68: MUST be no less than 30 ms (See RFC3775, section 7.4).
69: MUST be no greater than .75 * MaxRtrAdvInterval.
70:
71: Default: 0.33 * MaxRtrAdvInterval */
72: int MinRtrAdvInterval;
73: #define RTADV_MIN_RTR_ADV_INTERVAL (0.33 * RTADV_MAX_RTR_ADV_INTERVAL)
74:
75: /* Unsolicited Router Advertisements' interval timer. */
76: int AdvIntervalTimer;
77:
78: /* The TRUE/FALSE value to be placed in the "Managed address
79: configuration" flag field in the Router Advertisement. See
80: [ADDRCONF].
81:
82: Default: FALSE */
83: int AdvManagedFlag;
84:
85:
86: /* The TRUE/FALSE value to be placed in the "Other stateful
87: configuration" flag field in the Router Advertisement. See
88: [ADDRCONF].
89:
90: Default: FALSE */
91: int AdvOtherConfigFlag;
92:
93: /* The value to be placed in MTU options sent by the router. A
94: value of zero indicates that no MTU options are sent.
95:
96: Default: 0 */
97: int AdvLinkMTU;
98:
99:
100: /* The value to be placed in the Reachable Time field in the Router
101: Advertisement messages sent by the router. The value zero means
102: unspecified (by this router). MUST be no greater than 3,600,000
103: milliseconds (1 hour).
104:
105: Default: 0 */
106: u_int32_t AdvReachableTime;
107: #define RTADV_MAX_REACHABLE_TIME 3600000
108:
109:
110: /* The value to be placed in the Retrans Timer field in the Router
111: Advertisement messages sent by the router. The value zero means
112: unspecified (by this router).
113:
114: Default: 0 */
115: int AdvRetransTimer;
116:
117: /* The default value to be placed in the Cur Hop Limit field in the
118: Router Advertisement messages sent by the router. The value
119: should be set to that current diameter of the Internet. The
120: value zero means unspecified (by this router).
121:
122: Default: The value specified in the "Assigned Numbers" RFC
123: [ASSIGNED] that was in effect at the time of implementation. */
124: int AdvCurHopLimit;
125:
126: /* The value to be placed in the Router Lifetime field of Router
127: Advertisements sent from the interface, in seconds. MUST be
128: either zero or between MaxRtrAdvInterval and 9000 seconds. A
129: value of zero indicates that the router is not to be used as a
130: default router.
131:
132: Default: 3 * MaxRtrAdvInterval */
133: int AdvDefaultLifetime;
134: #define RTADV_ADV_DEFAULT_LIFETIME (3 * RTADV_MAX_RTR_ADV_INTERVAL)
135:
136:
137: /* A list of prefixes to be placed in Prefix Information options in
138: Router Advertisement messages sent from the interface.
139:
140: Default: all prefixes that the router advertises via routing
141: protocols as being on-link for the interface from which the
142: advertisement is sent. The link-local prefix SHOULD NOT be
143: included in the list of advertised prefixes. */
144: struct list *AdvPrefixList;
145:
146: /* The TRUE/FALSE value to be placed in the "Home agent"
147: flag field in the Router Advertisement. See [RFC3775 7.1].
148:
149: Default: FALSE */
150: int AdvHomeAgentFlag;
151: #ifndef ND_RA_FLAG_HOME_AGENT
152: #define ND_RA_FLAG_HOME_AGENT 0x20
153: #endif
154:
155: /* The value to be placed in Home Agent Information option if Home
156: Flag is set.
157: Default: 0 */
158: int HomeAgentPreference;
159:
160: /* The value to be placed in Home Agent Information option if Home
161: Flag is set. Lifetime (seconds) MUST not be greater than 18.2
162: hours.
163: The value 0 has special meaning: use of AdvDefaultLifetime value.
164:
165: Default: 0 */
166: int HomeAgentLifetime;
167: #define RTADV_MAX_HALIFETIME 65520 /* 18.2 hours */
168:
169: /* The TRUE/FALSE value to insert or not an Advertisement Interval
170: option. See [RFC 3775 7.3]
171:
172: Default: FALSE */
173: int AdvIntervalOption;
174:
175: /* The value to be placed in the Default Router Preference field of
176: a router advertisement. See [RFC 4191 2.1 & 2.2]
177:
178: Default: 0 (medium) */
179: int DefaultPreference;
180: #define RTADV_PREF_MEDIUM 0x0 /* Per RFC4191. */
181: };
182:
183: #endif /* RTADV */
184:
185: /* `zebra' daemon local interface structure. */
186: struct zebra_if
187: {
188: /* Shutdown configuration. */
189: u_char shutdown;
190:
191: /* Multicast configuration. */
192: u_char multicast;
193:
194: /* Router advertise configuration. */
195: u_char rtadv_enable;
196:
197: /* Installed addresses chains tree. */
198: struct route_table *ipv4_subnets;
199:
200: #ifdef RTADV
201: struct rtadvconf rtadv;
202: #endif /* RTADV */
203:
204: #ifdef HAVE_IRDP
205: struct irdp_interface irdp;
206: #endif
207:
208: #ifdef SUNOS_5
209: /* the real IFF_UP state of the primary interface.
210: * need this to differentiate between all interfaces being
211: * down (but primary still plumbed) and primary having gone
212: * ~IFF_UP, and all addresses gone.
213: */
214: u_char primary_state;
215: #endif /* SUNOS_5 */
216: };
217:
218: extern void if_delete_update (struct interface *ifp);
219: extern void if_add_update (struct interface *ifp);
220: extern void if_up (struct interface *);
221: extern void if_down (struct interface *);
222: extern void if_refresh (struct interface *);
223: extern void if_flags_update (struct interface *, uint64_t);
224: extern int if_subnet_add (struct interface *, struct connected *);
225: extern int if_subnet_delete (struct interface *, struct connected *);
226:
227: #ifdef HAVE_PROC_NET_DEV
228: extern void ifstat_update_proc (void);
229: #endif /* HAVE_PROC_NET_DEV */
230: #ifdef HAVE_NET_RT_IFLIST
231: extern void ifstat_update_sysctl (void);
232:
233: #endif /* HAVE_NET_RT_IFLIST */
234: #ifdef HAVE_PROC_NET_DEV
235: extern int interface_list_proc (void);
236: #endif /* HAVE_PROC_NET_DEV */
237: #ifdef HAVE_PROC_NET_IF_INET6
238: extern int ifaddr_proc_ipv6 (void);
239: #endif /* HAVE_PROC_NET_IF_INET6 */
240:
241: #ifdef BSDI
242: extern int if_kvm_get_mtu (struct interface *);
243: #endif /* BSDI */
244:
245: #endif /* _ZEBRA_INTERFACE_H */
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