2 /* Interface function header.
3 * Copyright (C) 1999 Kunihiro Ishiguro
5 * This file is part of GNU Zebra.
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
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.
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
22 #ifndef _ZEBRA_INTERFACE_H
23 #define _ZEBRA_INTERFACE_H
25 #include "redistribute.h"
30 #include "zebra/zebra_l2.h"
31 #include "zebra/zebra_nhg_private.h"
32 #include "zebra/zebra_router.h"
38 /* For interface multicast configuration. */
39 #define IF_ZEBRA_MULTICAST_UNSPEC 0
40 #define IF_ZEBRA_MULTICAST_ON 1
41 #define IF_ZEBRA_MULTICAST_OFF 2
43 /* For interface shutdown configuration. */
44 #define IF_ZEBRA_SHUTDOWN_OFF 0
45 #define IF_ZEBRA_SHUTDOWN_ON 1
47 #define IF_VLAN_BITMAP_MAX 4096
49 #if defined(HAVE_RTADV)
50 /* Router advertisement parameter. From RFC4861, RFC6275 and RFC4191. */
52 /* A flag indicating whether or not the router sends periodic Router
53 Advertisements and responds to Router Solicitations.
55 int AdvSendAdvertisements
;
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 [RFC6275 7.5] and no greater
60 than 1800000 ms [RFC4861 6.2.1].
62 Default: 600000 milliseconds */
63 int MaxRtrAdvInterval
;
64 #define RTADV_MAX_RTR_ADV_INTERVAL 600000
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 [RFC6275 7.5].
69 MUST be no greater than .75 * MaxRtrAdvInterval.
71 Default: 0.33 * MaxRtrAdvInterval */
72 int MinRtrAdvInterval
; /* This field is currently unused. */
73 #define RTADV_MIN_RTR_ADV_INTERVAL (0.33 * RTADV_MAX_RTR_ADV_INTERVAL)
75 /* Unsolicited Router Advertisements' interval timer. */
78 /* The true/false value to be placed in the "Managed address
79 configuration" flag field in the Router Advertisement. See
86 /* The true/false value to be placed in the "Other stateful
87 configuration" flag field in the Router Advertisement. See
91 int AdvOtherConfigFlag
;
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.
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).
106 uint32_t AdvReachableTime
;
107 #define RTADV_MAX_REACHABLE_TIME 3600000
109 /* The value to be placed in the Retrans Timer field in the Router
110 Advertisement messages sent by the router. The value zero means
111 unspecified (by this router).
116 /* The default value to be placed in the Cur Hop Limit field in the
117 Router Advertisement messages sent by the router. The value
118 should be set to that current diameter of the Internet. The
119 value zero means unspecified (by this router).
121 Default: The value specified in the "Assigned Numbers" RFC
122 [ASSIGNED] that was in effect at the time of implementation. */
124 #define RTADV_DEFAULT_HOPLIMIT 64 /* 64 hops */
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
132 Default: 3 * MaxRtrAdvInterval */
133 int AdvDefaultLifetime
;
134 #define RTADV_MAX_RTRLIFETIME 9000 /* 2.5 hours */
136 /* A list of prefixes to be placed in Prefix Information options in
137 Router Advertisement messages sent from the interface.
139 Default: all prefixes that the router advertises via routing
140 protocols as being on-link for the interface from which the
141 advertisement is sent. The link-local prefix SHOULD NOT be
142 included in the list of advertised prefixes. */
143 struct list
*AdvPrefixList
;
145 /* The true/false value to be placed in the "Home agent"
146 flag field in the Router Advertisement. See [RFC6275 7.1].
149 int AdvHomeAgentFlag
;
150 #ifndef ND_RA_FLAG_HOME_AGENT
151 #define ND_RA_FLAG_HOME_AGENT 0x20
154 /* The value to be placed in Home Agent Information option if Home
157 int HomeAgentPreference
;
159 /* The value to be placed in Home Agent Information option if Home
160 Flag is set. Lifetime (seconds) MUST not be greater than 18.2
162 The value 0 has special meaning: use of AdvDefaultLifetime value.
165 int HomeAgentLifetime
;
166 #define RTADV_MAX_HALIFETIME 65520 /* 18.2 hours */
168 /* The true/false value to insert or not an Advertisement Interval
169 option. See [RFC 6275 7.3]
172 int AdvIntervalOption
;
174 /* The value to be placed in the Default Router Preference field of
175 a router advertisement. See [RFC 4191 2.1 & 2.2]
177 Default: 0 (medium) */
178 int DefaultPreference
;
179 #define RTADV_PREF_MEDIUM 0x0 /* Per RFC4191. */
182 * List of recursive DNS servers to include in the RDNSS option.
185 * Default: empty list; do not emit RDNSS option
187 struct list
*AdvRDNSSList
;
190 * List of DNS search domains to include in the DNSSL option.
193 * Default: empty list; do not emit DNSSL option
195 struct list
*AdvDNSSLList
;
198 * rfc4861 states RAs must be sent at least 3 seconds apart.
199 * We allow faster retransmits to speed up convergence but can
200 * turn that capability off to meet the rfc if needed.
202 bool UseFastRexmit
; /* True if fast rexmits are enabled */
204 uint8_t inFastRexmit
; /* True if we're rexmits faster than usual */
206 /* Track if RA was configured by BGP or by the Operator or both */
207 uint8_t ra_configured
; /* Was RA configured? */
208 #define BGP_RA_CONFIGURED (1<<0) /* BGP configured RA? */
209 #define VTY_RA_CONFIGURED (1<<1) /* Operator configured RA? */
210 #define VTY_RA_INTERVAL_CONFIGURED (1<<2) /* Operator configured RA interval */
211 int NumFastReXmitsRemain
; /* Loaded first with number of fast
214 #define RTADV_FAST_REXMIT_PERIOD 1 /* 1 sec */
215 #define RTADV_NUM_FAST_REXMITS 4 /* Fast Rexmit RA 4 times on certain events */
219 /* Address of recursive DNS server to advertise */
220 struct in6_addr addr
;
223 * Lifetime in seconds; all-ones means infinity, zero
228 /* If lifetime not set, use a default of 3*MaxRtrAdvInterval */
233 * [RFC1035 2.3.4] sets the maximum length of a domain name (a sequence of
234 * labels, each prefixed by a length octet) at 255 octets.
236 #define RTADV_MAX_ENCODED_DOMAIN_NAME 255
239 /* Domain name without trailing root zone dot (NUL-terminated) */
240 char name
[RTADV_MAX_ENCODED_DOMAIN_NAME
- 1];
242 /* Name encoded as in [RFC1035 3.1] */
243 uint8_t encoded_name
[RTADV_MAX_ENCODED_DOMAIN_NAME
];
245 /* Actual length of encoded_name */
248 /* Lifetime as for RDNSS */
253 #endif /* HAVE_RTADV */
255 /* Zebra interface type - ones of interest. */
257 ZEBRA_IF_OTHER
= 0, /* Anything else */
258 ZEBRA_IF_VXLAN
, /* VxLAN interface */
259 ZEBRA_IF_VRF
, /* VRF device */
260 ZEBRA_IF_BRIDGE
, /* bridge device */
261 ZEBRA_IF_VLAN
, /* VLAN sub-interface */
262 ZEBRA_IF_MACVLAN
, /* MAC VLAN interface*/
263 ZEBRA_IF_VETH
, /* VETH interface*/
264 ZEBRA_IF_BOND
, /* Bond */
265 ZEBRA_IF_BOND_SLAVE
, /* Bond */
266 ZEBRA_IF_GRE
, /* GRE interface */
269 /* Zebra "slave" interface type */
270 enum zebra_slave_iftype
{
271 ZEBRA_IF_SLAVE_NONE
, /* Not a slave */
272 ZEBRA_IF_SLAVE_VRF
, /* Member of a VRF */
273 ZEBRA_IF_SLAVE_BRIDGE
, /* Member of a bridge */
274 ZEBRA_IF_SLAVE_BOND
, /* Bond member */
275 ZEBRA_IF_SLAVE_OTHER
, /* Something else - e.g., bond slave */
278 struct irdp_interface
;
280 /* Ethernet segment info used for setting up EVPN multihoming */
281 struct zebra_evpn_es
;
282 struct zebra_es_if_info
{
283 /* type-3 esi config */
284 struct ethaddr sysmac
;
285 uint32_t lid
; /* local-id; has to be unique per-ES-sysmac */
291 #define ZIF_CFG_ES_FLAG_BYPASS (1 << 0)
293 struct zebra_evpn_es
*es
; /* local ES */
296 enum zebra_if_flags
{
297 /* device has been configured as an uplink for
300 ZIF_FLAG_EVPN_MH_UPLINK
= (1 << 0),
301 ZIF_FLAG_EVPN_MH_UPLINK_OPER_UP
= (1 << 1),
303 /* Dataplane protodown-on */
304 ZIF_FLAG_PROTODOWN
= (1 << 2),
306 /* LACP bypass state is set by the dataplane on a bond member
307 * and inherited by the bond (if one or more bond members are in
308 * a bypass state the bond is placed in a bypass state)
310 ZIF_FLAG_LACP_BYPASS
= (1 << 3)
313 /* `zebra' daemon local interface structure. */
315 /* back pointer to the interface */
316 struct interface
*ifp
;
318 enum zebra_if_flags flags
;
320 /* Shutdown configuration. */
323 /* Multicast configuration. */
326 /* Router advertise configuration. */
327 uint8_t rtadv_enable
;
329 /* Installed addresses chains tree. */
330 struct route_table
*ipv4_subnets
;
332 /* Nexthops pointing to this interface */
334 * Any nexthop that we get should have an
335 * interface. When an interface goes down,
336 * we will use this list to update the nexthops
337 * pointing to it with that info.
339 struct nhg_connected_tree_head nhg_dependents
;
341 /* Information about up/down changes */
342 unsigned int up_count
;
343 char up_last
[QUAGGA_TIMESTAMP_LEN
];
344 unsigned int down_count
;
345 char down_last
[QUAGGA_TIMESTAMP_LEN
];
347 #if defined(HAVE_RTADV)
348 struct rtadvconf rtadv
;
349 unsigned int ra_sent
, ra_rcvd
;
350 #endif /* HAVE_RTADV */
352 struct irdp_interface
*irdp
;
354 #ifdef HAVE_STRUCT_SOCKADDR_DL
356 /* note that sdl_storage is never accessed, it only exists to
358 * all actual uses refer to sdl - but use sizeof(sdl_storage)!
360 * best with C aliasing rules. */
361 struct sockaddr_dl sdl
;
362 struct sockaddr_storage sdl_storage
;
366 /* ptm enable configuration */
369 /* Zebra interface and "slave" interface type */
370 enum zebra_iftype zif_type
;
371 enum zebra_slave_iftype zif_slave_type
;
373 /* Additional L2 info, depends on zif_type */
374 union zebra_l2if_info l2info
;
376 /* For members of a bridge, link to bridge. */
377 /* Note: If additional fields become necessary, this can be modified to
378 * be a pointer to a dynamically allocd struct.
380 struct zebra_l2info_brslave brslave_info
;
382 struct zebra_l2info_bondslave bondslave_info
;
383 struct zebra_l2info_bond bond_info
;
385 /* ethernet segment */
386 struct zebra_es_if_info es_info
;
388 /* bitmap of vlans associated with this interface */
389 bitfield_t vlan_bitmap
;
391 /* An interface can be error-disabled if a protocol (such as EVPN or
392 * VRRP) detects a problem with keeping it operationally-up.
393 * If any of the protodown bits are set protodown-on is programmed
394 * in the dataplane. This results in a carrier/L1 down on the
397 enum protodown_reasons protodown_rc
;
399 /* list of zebra_mac entries using this interface as destination */
400 struct list
*mac_list
;
402 /* Link fields - for sub-interfaces. */
403 ifindex_t link_ifindex
;
404 struct interface
*link
;
406 struct thread
*speed_update
;
409 * Does this interface have a v6 to v4 ll neighbor entry
410 * for bgp unnumbered?
412 bool v6_2_v4_ll_neigh_entry
;
414 struct in6_addr v6_2_v4_ll_addr6
;
416 /* The description of the interface */
420 DECLARE_HOOK(zebra_if_extra_info
, (struct vty
* vty
, struct interface
*ifp
),
422 DECLARE_HOOK(zebra_if_config_wr
, (struct vty
* vty
, struct interface
*ifp
),
425 #define IS_ZEBRA_IF_VRF(ifp) \
426 (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VRF)
428 #define IS_ZEBRA_IF_BRIDGE(ifp) \
429 (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_BRIDGE)
431 #define IS_ZEBRA_IF_VLAN(ifp) \
432 (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VLAN)
434 #define IS_ZEBRA_IF_VXLAN(ifp) \
435 (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VXLAN)
437 #define IS_ZEBRA_IF_MACVLAN(ifp) \
438 (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_MACVLAN)
440 #define IS_ZEBRA_IF_VETH(ifp) \
441 (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_VETH)
443 #define IS_ZEBRA_IF_BOND(ifp) \
444 (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_BOND)
446 #define IS_ZEBRA_IF_GRE(ifp) \
447 (((struct zebra_if *)(ifp->info))->zif_type == ZEBRA_IF_GRE)
449 #define IS_ZEBRA_IF_BRIDGE_SLAVE(ifp) \
450 (((struct zebra_if *)(ifp->info))->zif_slave_type \
451 == ZEBRA_IF_SLAVE_BRIDGE)
453 #define IS_ZEBRA_IF_VRF_SLAVE(ifp) \
454 (((struct zebra_if *)(ifp->info))->zif_slave_type == ZEBRA_IF_SLAVE_VRF)
456 #define IS_ZEBRA_IF_BOND_SLAVE(ifp) \
457 (((struct zebra_if *)(ifp->info))->zif_slave_type \
458 == ZEBRA_IF_SLAVE_BOND)
460 extern void zebra_if_init(void);
462 extern struct interface
*if_lookup_by_index_per_ns(struct zebra_ns
*, uint32_t);
463 extern struct interface
*if_lookup_by_name_per_ns(struct zebra_ns
*,
465 extern struct interface
*if_link_per_ns(struct zebra_ns
*, struct interface
*);
466 extern const char *ifindex2ifname_per_ns(struct zebra_ns
*, unsigned int);
468 extern void if_unlink_per_ns(struct interface
*);
469 extern void if_nbr_mac_to_ipv4ll_neigh_update(struct interface
*fip
,
471 struct in6_addr
*address
,
473 extern void if_nbr_ipv6ll_to_ipv4ll_neigh_update(struct interface
*ifp
,
474 struct in6_addr
*address
,
476 extern void if_nbr_ipv6ll_to_ipv4ll_neigh_del_all(struct interface
*ifp
);
477 extern void if_delete_update(struct interface
*ifp
);
478 extern void if_add_update(struct interface
*ifp
);
479 extern void if_up(struct interface
*);
480 extern void if_down(struct interface
*);
481 extern void if_refresh(struct interface
*);
482 extern void if_flags_update(struct interface
*, uint64_t);
483 extern int if_subnet_add(struct interface
*, struct connected
*);
484 extern int if_subnet_delete(struct interface
*, struct connected
*);
485 extern int ipv6_address_configured(struct interface
*ifp
);
486 extern void if_handle_vrf_change(struct interface
*ifp
, vrf_id_t vrf_id
);
487 extern void zebra_if_update_link(struct interface
*ifp
, ifindex_t link_ifindex
,
489 extern void zebra_if_update_all_links(struct zebra_ns
*zns
);
490 extern void zebra_if_set_protodown(struct interface
*ifp
, bool down
);
491 extern int if_ip_address_install(struct interface
*ifp
, struct prefix
*prefix
,
492 const char *label
, struct prefix
*pp
);
493 extern int if_ipv6_address_install(struct interface
*ifp
, struct prefix
*prefix
,
495 extern int if_ip_address_uinstall(struct interface
*ifp
, struct prefix
*prefix
);
496 extern int if_shutdown(struct interface
*ifp
);
497 extern int if_no_shutdown(struct interface
*ifp
);
498 extern int if_multicast_set(struct interface
*ifp
);
499 extern int if_multicast_unset(struct interface
*ifp
);
500 extern int if_linkdetect(struct interface
*ifp
, bool detect
);
501 extern void if_addr_wakeup(struct interface
*ifp
);
503 /* Nexthop group connected functions */
504 extern void if_nhg_dependents_add(struct interface
*ifp
,
505 struct nhg_hash_entry
*nhe
);
506 extern void if_nhg_dependents_del(struct interface
*ifp
,
507 struct nhg_hash_entry
*nhe
);
508 extern unsigned int if_nhg_dependents_count(const struct interface
*ifp
);
509 extern bool if_nhg_dependents_is_empty(const struct interface
*ifp
);
511 extern void vrf_add_update(struct vrf
*vrfp
);
512 extern void zebra_l2_map_slave_to_bond(struct zebra_if
*zif
, vrf_id_t vrf
);
513 extern void zebra_l2_unmap_slave_from_bond(struct zebra_if
*zif
);
514 extern const char *zebra_protodown_rc_str(enum protodown_reasons protodown_rc
,
515 char *pd_buf
, uint32_t pd_buf_len
);
516 void zebra_if_addr_update_ctx(struct zebra_dplane_ctx
*ctx
);
518 #ifdef HAVE_PROC_NET_DEV
519 extern void ifstat_update_proc(void);
520 #endif /* HAVE_PROC_NET_DEV */
521 #ifdef HAVE_NET_RT_IFLIST
522 extern void ifstat_update_sysctl(void);
524 #endif /* HAVE_NET_RT_IFLIST */
525 #ifdef HAVE_PROC_NET_DEV
526 extern int interface_list_proc(void);
527 #endif /* HAVE_PROC_NET_DEV */
528 #ifdef HAVE_PROC_NET_IF_INET6
529 extern int ifaddr_proc_ipv6(void);
530 #endif /* HAVE_PROC_NET_IF_INET6 */
536 #endif /* _ZEBRA_INTERFACE_H */