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1 | ||
2 | /* Interface function header. | |
3 | * Copyright (C) 1999 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify it | |
8 | * under the terms of the GNU General Public License as published by the | |
9 | * Free Software Foundation; either version 2, or (at your option) any | |
10 | * later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
18 | * with this program; see the file COPYING; if not, write to the Free Software | |
19 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA | |
20 | */ | |
21 | ||
22 | #ifndef _ZEBRA_INTERFACE_H | |
23 | #define _ZEBRA_INTERFACE_H | |
24 | ||
25 | #include "redistribute.h" | |
26 | #include "vrf.h" | |
27 | #include "hook.h" | |
28 | ||
29 | #include "zebra/zebra_l2.h" | |
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_OFF 0 | |
38 | #define IF_ZEBRA_SHUTDOWN_ON 1 | |
39 | ||
40 | #if defined(HAVE_RTADV) | |
41 | /* Router advertisement parameter. From RFC4861, RFC6275 and RFC4191. */ | |
42 | struct rtadvconf { | |
43 | /* A flag indicating whether or not the router sends periodic Router | |
44 | Advertisements and responds to Router Solicitations. | |
45 | Default: FALSE */ | |
46 | int AdvSendAdvertisements; | |
47 | ||
48 | /* The maximum time allowed between sending unsolicited multicast | |
49 | Router Advertisements from the interface, in milliseconds. | |
50 | MUST be no less than 70 ms [RFC6275 7.5] and no greater | |
51 | than 1800000 ms [RFC4861 6.2.1]. | |
52 | ||
53 | Default: 600000 milliseconds */ | |
54 | int MaxRtrAdvInterval; | |
55 | #define RTADV_MAX_RTR_ADV_INTERVAL 600000 | |
56 | ||
57 | /* The minimum time allowed between sending unsolicited multicast | |
58 | Router Advertisements from the interface, in milliseconds. | |
59 | MUST be no less than 30 ms [RFC6275 7.5]. | |
60 | MUST be no greater than .75 * MaxRtrAdvInterval. | |
61 | ||
62 | Default: 0.33 * MaxRtrAdvInterval */ | |
63 | int MinRtrAdvInterval; /* This field is currently unused. */ | |
64 | #define RTADV_MIN_RTR_ADV_INTERVAL (0.33 * RTADV_MAX_RTR_ADV_INTERVAL) | |
65 | ||
66 | /* Unsolicited Router Advertisements' interval timer. */ | |
67 | int AdvIntervalTimer; | |
68 | ||
69 | /* The TRUE/FALSE value to be placed in the "Managed address | |
70 | configuration" flag field in the Router Advertisement. See | |
71 | [ADDRCONF]. | |
72 | ||
73 | Default: FALSE */ | |
74 | int AdvManagedFlag; | |
75 | ||
76 | ||
77 | /* The TRUE/FALSE value to be placed in the "Other stateful | |
78 | configuration" flag field in the Router Advertisement. See | |
79 | [ADDRCONF]. | |
80 | ||
81 | Default: FALSE */ | |
82 | int AdvOtherConfigFlag; | |
83 | ||
84 | /* The value to be placed in MTU options sent by the router. A | |
85 | value of zero indicates that no MTU options are sent. | |
86 | ||
87 | Default: 0 */ | |
88 | int AdvLinkMTU; | |
89 | ||
90 | ||
91 | /* The value to be placed in the Reachable Time field in the Router | |
92 | Advertisement messages sent by the router. The value zero means | |
93 | unspecified (by this router). MUST be no greater than 3,600,000 | |
94 | milliseconds (1 hour). | |
95 | ||
96 | Default: 0 */ | |
97 | uint32_t AdvReachableTime; | |
98 | #define RTADV_MAX_REACHABLE_TIME 3600000 | |
99 | ||
100 | /* The value to be placed in the Retrans Timer field in the Router | |
101 | Advertisement messages sent by the router. The value zero means | |
102 | unspecified (by this router). | |
103 | ||
104 | Default: 0 */ | |
105 | int AdvRetransTimer; | |
106 | ||
107 | /* The default value to be placed in the Cur Hop Limit field in the | |
108 | Router Advertisement messages sent by the router. The value | |
109 | should be set to that current diameter of the Internet. The | |
110 | value zero means unspecified (by this router). | |
111 | ||
112 | Default: The value specified in the "Assigned Numbers" RFC | |
113 | [ASSIGNED] that was in effect at the time of implementation. */ | |
114 | int AdvCurHopLimit; | |
115 | ||
116 | /* The value to be placed in the Router Lifetime field of Router | |
117 | Advertisements sent from the interface, in seconds. MUST be | |
118 | either zero or between MaxRtrAdvInterval and 9000 seconds. A | |
119 | value of zero indicates that the router is not to be used as a | |
120 | default router. | |
121 | ||
122 | Default: 3 * MaxRtrAdvInterval */ | |
123 | int AdvDefaultLifetime; | |
124 | #define RTADV_MAX_RTRLIFETIME 9000 /* 2.5 hours */ | |
125 | ||
126 | /* A list of prefixes to be placed in Prefix Information options in | |
127 | Router Advertisement messages sent from the interface. | |
128 | ||
129 | Default: all prefixes that the router advertises via routing | |
130 | protocols as being on-link for the interface from which the | |
131 | advertisement is sent. The link-local prefix SHOULD NOT be | |
132 | included in the list of advertised prefixes. */ | |
133 | struct list *AdvPrefixList; | |
134 | ||
135 | /* The TRUE/FALSE value to be placed in the "Home agent" | |
136 | flag field in the Router Advertisement. See [RFC6275 7.1]. | |
137 | ||
138 | Default: FALSE */ | |
139 | int AdvHomeAgentFlag; | |
140 | #ifndef ND_RA_FLAG_HOME_AGENT | |
141 | #define ND_RA_FLAG_HOME_AGENT 0x20 | |
142 | #endif | |
143 | ||
144 | /* The value to be placed in Home Agent Information option if Home | |
145 | Flag is set. | |
146 | Default: 0 */ | |
147 | int HomeAgentPreference; | |
148 | ||
149 | /* The value to be placed in Home Agent Information option if Home | |
150 | Flag is set. Lifetime (seconds) MUST not be greater than 18.2 | |
151 | hours. | |
152 | The value 0 has special meaning: use of AdvDefaultLifetime value. | |
153 | ||
154 | Default: 0 */ | |
155 | int HomeAgentLifetime; | |
156 | #define RTADV_MAX_HALIFETIME 65520 /* 18.2 hours */ | |
157 | ||
158 | /* The TRUE/FALSE value to insert or not an Advertisement Interval | |
159 | option. See [RFC 6275 7.3] | |
160 | ||
161 | Default: FALSE */ | |
162 | int AdvIntervalOption; | |
163 | ||
164 | /* The value to be placed in the Default Router Preference field of | |
165 | a router advertisement. See [RFC 4191 2.1 & 2.2] | |
166 | ||
167 | Default: 0 (medium) */ | |
168 | int DefaultPreference; | |
169 | #define RTADV_PREF_MEDIUM 0x0 /* Per RFC4191. */ | |
170 | ||
171 | uint8_t inFastRexmit; /* True if we're rexmits faster than usual */ | |
172 | ||
173 | /* Track if RA was configured by BGP or by the Operator or both */ | |
174 | uint8_t ra_configured; /* Was RA configured? */ | |
175 | #define BGP_RA_CONFIGURED (1<<0) /* BGP configured RA? */ | |
176 | #define VTY_RA_CONFIGURED (1<<1) /* Operator configured RA? */ | |
177 | #define VTY_RA_INTERVAL_CONFIGURED (1<<2) /* Operator configured RA interval */ | |
178 | int NumFastReXmitsRemain; /* Loaded first with number of fast | |
179 | rexmits to do */ | |
180 | ||
181 | #define RTADV_FAST_REXMIT_PERIOD 1 /* 1 sec */ | |
182 | #define RTADV_NUM_FAST_REXMITS 4 /* Fast Rexmit RA 4 times on certain events */ | |
183 | }; | |
184 | ||
185 | #endif /* HAVE_RTADV */ | |
186 | ||
187 | /* Zebra interface type - ones of interest. */ | |
188 | typedef enum { | |
189 | ZEBRA_IF_OTHER = 0, /* Anything else */ | |
190 | ZEBRA_IF_VXLAN, /* VxLAN interface */ | |
191 | ZEBRA_IF_VRF, /* VRF device */ | |
192 | ZEBRA_IF_BRIDGE, /* bridge device */ | |
193 | ZEBRA_IF_VLAN, /* VLAN sub-interface */ | |
194 | ZEBRA_IF_MACVLAN, /* MAC VLAN interface*/ | |
195 | ZEBRA_IF_VETH, /* VETH interface*/ | |
196 | ZEBRA_IF_BOND, /* Bond */ | |
197 | ZEBRA_IF_BOND_SLAVE, /* Bond */ | |
198 | } zebra_iftype_t; | |
199 | ||
200 | /* Zebra "slave" interface type */ | |
201 | typedef enum { | |
202 | ZEBRA_IF_SLAVE_NONE, /* Not a slave */ | |
203 | ZEBRA_IF_SLAVE_VRF, /* Member of a VRF */ | |
204 | ZEBRA_IF_SLAVE_BRIDGE, /* Member of a bridge */ | |
205 | ZEBRA_IF_SLAVE_BOND, /* Bond member */ | |
206 | ZEBRA_IF_SLAVE_OTHER, /* Something else - e.g., bond slave */ | |
207 | } zebra_slave_iftype_t; | |
208 | ||
209 | struct irdp_interface; | |
210 | ||
211 | /* `zebra' daemon local interface structure. */ | |
212 | struct zebra_if { | |
213 | /* Shutdown configuration. */ | |
214 | uint8_t shutdown; | |
215 | ||
216 | /* Multicast configuration. */ | |
217 | uint8_t multicast; | |
218 | ||
219 | /* Router advertise configuration. */ | |
220 | uint8_t rtadv_enable; | |
221 | ||
222 | /* Installed addresses chains tree. */ | |
223 | struct route_table *ipv4_subnets; | |
224 | ||
225 | /* Information about up/down changes */ | |
226 | unsigned int up_count; | |
227 | char up_last[QUAGGA_TIMESTAMP_LEN]; | |
228 | unsigned int down_count; | |
229 | char down_last[QUAGGA_TIMESTAMP_LEN]; | |
230 | ||
231 | #if defined(HAVE_RTADV) | |
232 | struct rtadvconf rtadv; | |
233 | unsigned int ra_sent, ra_rcvd; | |
234 | #endif /* HAVE_RTADV */ | |
235 | ||
236 | struct irdp_interface *irdp; | |
237 | ||
238 | #ifdef HAVE_STRUCT_SOCKADDR_DL | |
239 | union { | |
240 | /* note that sdl_storage is never accessed, it only exists to | |
241 | * make space. | |
242 | * all actual uses refer to sdl - but use sizeof(sdl_storage)! | |
243 | * this fits | |
244 | * best with C aliasing rules. */ | |
245 | struct sockaddr_dl sdl; | |
246 | struct sockaddr_storage sdl_storage; | |
247 | }; | |
248 | #endif | |
249 | ||
250 | #ifdef SUNOS_5 | |
251 | /* the real IFF_UP state of the primary interface. | |
252 | * need this to differentiate between all interfaces being | |
253 | * down (but primary still plumbed) and primary having gone | |
254 | * ~IFF_UP, and all addresses gone. | |
255 | */ | |
256 | uint8_t primary_state; | |
257 | #endif /* SUNOS_5 */ | |
258 | ||
259 | /* ptm enable configuration */ | |
260 | uint8_t ptm_enable; | |
261 | ||
262 | /* Zebra interface and "slave" interface type */ | |
263 | zebra_iftype_t zif_type; | |
264 | zebra_slave_iftype_t zif_slave_type; | |
265 | ||
266 | /* Additional L2 info, depends on zif_type */ | |
267 | union zebra_l2if_info l2info; | |
268 | ||
269 | /* For members of a bridge, link to bridge. */ | |
270 | /* Note: If additional fields become necessary, this can be modified to | |
271 | * be a pointer to a dynamically allocd struct. | |
272 | */ | |
273 | struct zebra_l2info_brslave brslave_info; | |
274 | ||
275 | struct zebra_l2info_bondslave bondslave_info; | |
276 | ||
277 | /* Link fields - for sub-interfaces. */ | |
278 | ifindex_t link_ifindex; | |
279 | struct interface *link; | |
280 | ||
281 | struct thread *speed_update; | |
282 | ||
283 | /* | |
284 | * Does this interface have a v6 to v4 ll neighbor entry | |
285 | * for bgp unnumbered? | |
286 | */ | |
287 | bool v6_2_v4_ll_neigh_entry; | |
288 | char neigh_mac[6]; | |
289 | struct in6_addr v6_2_v4_ll_addr6; | |
290 | }; | |
291 | ||
292 | DECLARE_HOOK(zebra_if_extra_info, (struct vty * vty, struct interface *ifp), | |
293 | (vty, ifp)) | |
294 | DECLARE_HOOK(zebra_if_config_wr, (struct vty * vty, struct interface *ifp), | |
295 | (vty, ifp)) | |
296 | ||
297 | static inline void zebra_if_set_ziftype(struct interface *ifp, | |
298 | zebra_iftype_t zif_type, | |
299 | zebra_slave_iftype_t zif_slave_type) | |
300 | { | |
301 | struct zebra_if *zif; | |
302 | ||
303 | zif = (struct zebra_if *)ifp->info; | |
304 | zif->zif_type = zif_type; | |
305 | zif->zif_slave_type = zif_slave_type; | |
306 | } | |
307 | ||
308 | #define IS_ZEBRA_IF_VRF(ifp) \ | |
309 | (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VRF) | |
310 | ||
311 | #define IS_ZEBRA_IF_BRIDGE(ifp) \ | |
312 | (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_BRIDGE) | |
313 | ||
314 | #define IS_ZEBRA_IF_VLAN(ifp) \ | |
315 | (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VLAN) | |
316 | ||
317 | #define IS_ZEBRA_IF_VXLAN(ifp) \ | |
318 | (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VXLAN) | |
319 | ||
320 | #define IS_ZEBRA_IF_MACVLAN(ifp) \ | |
321 | (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_MACVLAN) | |
322 | ||
323 | #define IS_ZEBRA_IF_VETH(ifp) \ | |
324 | (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VETH) | |
325 | ||
326 | #define IS_ZEBRA_IF_BRIDGE_SLAVE(ifp) \ | |
327 | (((struct zebra_if *)(ifp->info))->zif_slave_type \ | |
328 | == ZEBRA_IF_SLAVE_BRIDGE) | |
329 | ||
330 | #define IS_ZEBRA_IF_VRF_SLAVE(ifp) \ | |
331 | (((struct zebra_if *)(ifp->info))->zif_slave_type == ZEBRA_IF_SLAVE_VRF) | |
332 | ||
333 | #define IS_ZEBRA_IF_BOND_SLAVE(ifp) \ | |
334 | (((struct zebra_if *)(ifp->info))->zif_slave_type \ | |
335 | == ZEBRA_IF_SLAVE_BOND) | |
336 | ||
337 | extern void zebra_if_init(void); | |
338 | ||
339 | extern struct interface *if_lookup_by_index_per_ns(struct zebra_ns *, uint32_t); | |
340 | extern struct interface *if_lookup_by_name_per_ns(struct zebra_ns *, | |
341 | const char *); | |
342 | extern struct interface *if_link_per_ns(struct zebra_ns *, struct interface *); | |
343 | extern const char *ifindex2ifname_per_ns(struct zebra_ns *, unsigned int); | |
344 | ||
345 | extern void if_unlink_per_ns(struct interface *); | |
346 | extern void if_nbr_mac_to_ipv4ll_neigh_update(struct interface *fip, | |
347 | char mac[6], | |
348 | struct in6_addr *address, | |
349 | int add); | |
350 | extern void if_nbr_ipv6ll_to_ipv4ll_neigh_update(struct interface *ifp, | |
351 | struct in6_addr *address, | |
352 | int add); | |
353 | extern void if_nbr_ipv6ll_to_ipv4ll_neigh_del_all(struct interface *ifp); | |
354 | extern void if_delete_update(struct interface *ifp); | |
355 | extern void if_add_update(struct interface *ifp); | |
356 | extern void if_up(struct interface *); | |
357 | extern void if_down(struct interface *); | |
358 | extern void if_refresh(struct interface *); | |
359 | extern void if_flags_update(struct interface *, uint64_t); | |
360 | extern int if_subnet_add(struct interface *, struct connected *); | |
361 | extern int if_subnet_delete(struct interface *, struct connected *); | |
362 | extern int ipv6_address_configured(struct interface *ifp); | |
363 | extern void if_handle_vrf_change(struct interface *ifp, vrf_id_t vrf_id); | |
364 | extern void zebra_if_update_link(struct interface *ifp, ifindex_t link_ifindex, | |
365 | ns_id_t ns_id); | |
366 | extern void zebra_if_update_all_links(void); | |
367 | ||
368 | extern void vrf_add_update(struct vrf *vrfp); | |
369 | ||
370 | #ifdef HAVE_PROC_NET_DEV | |
371 | extern void ifstat_update_proc(void); | |
372 | #endif /* HAVE_PROC_NET_DEV */ | |
373 | #ifdef HAVE_NET_RT_IFLIST | |
374 | extern void ifstat_update_sysctl(void); | |
375 | ||
376 | #endif /* HAVE_NET_RT_IFLIST */ | |
377 | #ifdef HAVE_PROC_NET_DEV | |
378 | extern int interface_list_proc(void); | |
379 | #endif /* HAVE_PROC_NET_DEV */ | |
380 | #ifdef HAVE_PROC_NET_IF_INET6 | |
381 | extern int ifaddr_proc_ipv6(void); | |
382 | #endif /* HAVE_PROC_NET_IF_INET6 */ | |
383 | ||
384 | #endif /* _ZEBRA_INTERFACE_H */ |