2 * Interface looking up by netlink.
3 * Copyright (C) 1998 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
26 /* The following definition is to workaround an issue in the Linux kernel
27 * header files with redefinition of 'struct in6_addr' in both
28 * netinet/in.h and linux/in6.h.
29 * Reference - https://sourceware.org/ml/libc-alpha/2013-01/msg00599.html
33 #include <netinet/if_ether.h>
34 #include <linux/if_bridge.h>
35 #include <linux/if_link.h>
36 #include <net/if_arp.h>
37 #include <linux/sockios.h>
38 #include <linux/ethtool.h>
44 #include "connected.h"
47 #include "zebra_memory.h"
55 #include "lib_errors.h"
58 #include "zebra/zserv.h"
59 #include "zebra/zebra_ns.h"
60 #include "zebra/zebra_vrf.h"
62 #include "zebra/redistribute.h"
63 #include "zebra/interface.h"
64 #include "zebra/debug.h"
65 #include "zebra/rtadv.h"
66 #include "zebra/zebra_ptm.h"
67 #include "zebra/zebra_mpls.h"
68 #include "zebra/kernel_netlink.h"
69 #include "zebra/if_netlink.h"
70 #include "zebra/zebra_errors.h"
72 extern struct zebra_privs_t zserv_privs
;
74 /* Note: on netlink systems, there should be a 1-to-1 mapping between interface
75 names and ifindex values. */
76 static void set_ifindex(struct interface
*ifp
, ifindex_t ifi_index
,
79 struct interface
*oifp
;
81 if (((oifp
= if_lookup_by_index_per_ns(zns
, ifi_index
)) != NULL
)
83 if (ifi_index
== IFINDEX_INTERNAL
)
86 "Netlink is setting interface %s ifindex to reserved internal value %u",
87 ifp
->name
, ifi_index
);
89 if (IS_ZEBRA_DEBUG_KERNEL
)
91 "interface index %d was renamed from %s to %s",
92 ifi_index
, oifp
->name
, ifp
->name
);
96 "interface rename detected on up interface: index %d was renamed from %s to %s, results are uncertain!",
97 ifi_index
, oifp
->name
, ifp
->name
);
98 if_delete_update(oifp
);
101 if_set_index(ifp
, ifi_index
);
104 /* Utility function to parse hardware link-layer address and update ifp */
105 static void netlink_interface_update_hw_addr(struct rtattr
**tb
,
106 struct interface
*ifp
)
110 if (tb
[IFLA_ADDRESS
]) {
113 hw_addr_len
= RTA_PAYLOAD(tb
[IFLA_ADDRESS
]);
115 if (hw_addr_len
> INTERFACE_HWADDR_MAX
)
116 zlog_debug("Hardware address is too large: %d",
119 ifp
->hw_addr_len
= hw_addr_len
;
120 memcpy(ifp
->hw_addr
, RTA_DATA(tb
[IFLA_ADDRESS
]),
123 for (i
= 0; i
< hw_addr_len
; i
++)
124 if (ifp
->hw_addr
[i
] != 0)
127 if (i
== hw_addr_len
)
128 ifp
->hw_addr_len
= 0;
130 ifp
->hw_addr_len
= hw_addr_len
;
135 static enum zebra_link_type
netlink_to_zebra_link_type(unsigned int hwt
)
139 return ZEBRA_LLT_ETHER
;
141 return ZEBRA_LLT_EETHER
;
143 return ZEBRA_LLT_AX25
;
145 return ZEBRA_LLT_PRONET
;
147 return ZEBRA_LLT_IEEE802
;
149 return ZEBRA_LLT_ARCNET
;
150 case ARPHRD_APPLETLK
:
151 return ZEBRA_LLT_APPLETLK
;
153 return ZEBRA_LLT_DLCI
;
155 return ZEBRA_LLT_ATM
;
156 case ARPHRD_METRICOM
:
157 return ZEBRA_LLT_METRICOM
;
158 case ARPHRD_IEEE1394
:
159 return ZEBRA_LLT_IEEE1394
;
161 return ZEBRA_LLT_EUI64
;
162 case ARPHRD_INFINIBAND
:
163 return ZEBRA_LLT_INFINIBAND
;
165 return ZEBRA_LLT_SLIP
;
167 return ZEBRA_LLT_CSLIP
;
169 return ZEBRA_LLT_SLIP6
;
171 return ZEBRA_LLT_CSLIP6
;
173 return ZEBRA_LLT_RSRVD
;
175 return ZEBRA_LLT_ADAPT
;
177 return ZEBRA_LLT_ROSE
;
179 return ZEBRA_LLT_X25
;
181 return ZEBRA_LLT_PPP
;
183 return ZEBRA_LLT_CHDLC
;
185 return ZEBRA_LLT_LAPB
;
187 return ZEBRA_LLT_RAWHDLC
;
189 return ZEBRA_LLT_IPIP
;
191 return ZEBRA_LLT_IPIP6
;
193 return ZEBRA_LLT_FRAD
;
195 return ZEBRA_LLT_SKIP
;
196 case ARPHRD_LOOPBACK
:
197 return ZEBRA_LLT_LOOPBACK
;
198 case ARPHRD_LOCALTLK
:
199 return ZEBRA_LLT_LOCALTLK
;
201 return ZEBRA_LLT_FDDI
;
203 return ZEBRA_LLT_SIT
;
205 return ZEBRA_LLT_IPDDP
;
207 return ZEBRA_LLT_IPGRE
;
209 return ZEBRA_LLT_PIMREG
;
211 return ZEBRA_LLT_HIPPI
;
213 return ZEBRA_LLT_ECONET
;
215 return ZEBRA_LLT_IRDA
;
217 return ZEBRA_LLT_FCPP
;
219 return ZEBRA_LLT_FCAL
;
221 return ZEBRA_LLT_FCPL
;
222 case ARPHRD_FCFABRIC
:
223 return ZEBRA_LLT_FCFABRIC
;
224 case ARPHRD_IEEE802_TR
:
225 return ZEBRA_LLT_IEEE802_TR
;
226 case ARPHRD_IEEE80211
:
227 return ZEBRA_LLT_IEEE80211
;
228 #ifdef ARPHRD_IEEE802154
229 case ARPHRD_IEEE802154
:
230 return ZEBRA_LLT_IEEE802154
;
234 return ZEBRA_LLT_IP6GRE
;
236 #ifdef ARPHRD_IEEE802154_PHY
237 case ARPHRD_IEEE802154_PHY
:
238 return ZEBRA_LLT_IEEE802154_PHY
;
242 return ZEBRA_LLT_UNKNOWN
;
246 static void netlink_determine_zebra_iftype(char *kind
, zebra_iftype_t
*zif_type
)
248 *zif_type
= ZEBRA_IF_OTHER
;
253 if (strcmp(kind
, "vrf") == 0)
254 *zif_type
= ZEBRA_IF_VRF
;
255 else if (strcmp(kind
, "bridge") == 0)
256 *zif_type
= ZEBRA_IF_BRIDGE
;
257 else if (strcmp(kind
, "vlan") == 0)
258 *zif_type
= ZEBRA_IF_VLAN
;
259 else if (strcmp(kind
, "vxlan") == 0)
260 *zif_type
= ZEBRA_IF_VXLAN
;
261 else if (strcmp(kind
, "macvlan") == 0)
262 *zif_type
= ZEBRA_IF_MACVLAN
;
263 else if (strcmp(kind
, "veth") == 0)
264 *zif_type
= ZEBRA_IF_VETH
;
267 #define parse_rtattr_nested(tb, max, rta) \
268 netlink_parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))
270 static void netlink_vrf_change(struct nlmsghdr
*h
, struct rtattr
*tb
,
273 struct ifinfomsg
*ifi
;
274 struct rtattr
*linkinfo
[IFLA_INFO_MAX
+ 1];
275 struct rtattr
*attr
[IFLA_VRF_MAX
+ 1];
277 struct zebra_vrf
*zvrf
;
278 uint32_t nl_table_id
;
282 memset(linkinfo
, 0, sizeof linkinfo
);
283 parse_rtattr_nested(linkinfo
, IFLA_INFO_MAX
, tb
);
285 if (!linkinfo
[IFLA_INFO_DATA
]) {
286 if (IS_ZEBRA_DEBUG_KERNEL
)
288 "%s: IFLA_INFO_DATA missing from VRF message: %s",
293 memset(attr
, 0, sizeof attr
);
294 parse_rtattr_nested(attr
, IFLA_VRF_MAX
, linkinfo
[IFLA_INFO_DATA
]);
295 if (!attr
[IFLA_VRF_TABLE
]) {
296 if (IS_ZEBRA_DEBUG_KERNEL
)
298 "%s: IFLA_VRF_TABLE missing from VRF message: %s",
303 nl_table_id
= *(uint32_t *)RTA_DATA(attr
[IFLA_VRF_TABLE
]);
305 if (h
->nlmsg_type
== RTM_NEWLINK
) {
306 if (IS_ZEBRA_DEBUG_KERNEL
)
307 zlog_debug("RTM_NEWLINK for VRF %s(%u) table %u", name
,
308 ifi
->ifi_index
, nl_table_id
);
311 * vrf_get is implied creation if it does not exist
313 vrf
= vrf_get((vrf_id_t
)ifi
->ifi_index
,
314 name
); // It would create vrf
316 flog_err(EC_LIB_INTERFACE
, "VRF %s id %u not created",
317 name
, ifi
->ifi_index
);
322 * This is the only place that we get the actual kernel table_id
323 * being used. We need it to set the table_id of the routes
324 * we are passing to the kernel.... And to throw some totally
325 * awesome parties. that too.
327 * At this point we *must* have a zvrf because the vrf_create
328 * callback creates one. We *must* set the table id
329 * before the vrf_enable because of( at the very least )
330 * static routes being delayed for installation until
331 * during the vrf_enable callbacks.
333 zvrf
= (struct zebra_vrf
*)vrf
->info
;
334 zvrf
->table_id
= nl_table_id
;
336 /* Enable the created VRF. */
337 if (!vrf_enable(vrf
)) {
338 flog_err(EC_LIB_INTERFACE
,
339 "Failed to enable VRF %s id %u", name
,
344 } else // h->nlmsg_type == RTM_DELLINK
346 if (IS_ZEBRA_DEBUG_KERNEL
)
347 zlog_debug("RTM_DELLINK for VRF %s(%u)", name
,
350 vrf
= vrf_lookup_by_id((vrf_id_t
)ifi
->ifi_index
);
353 flog_warn(EC_ZEBRA_VRF_NOT_FOUND
, "%s: vrf not found",
362 static int get_iflink_speed(struct interface
*interface
)
365 struct ethtool_cmd ecmd
;
368 const char *ifname
= interface
->name
;
370 /* initialize struct */
371 memset(&ifdata
, 0, sizeof(ifdata
));
373 /* set interface name */
374 strlcpy(ifdata
.ifr_name
, ifname
, sizeof(ifdata
.ifr_name
));
376 /* initialize ethtool interface */
377 memset(&ecmd
, 0, sizeof(ecmd
));
378 ecmd
.cmd
= ETHTOOL_GSET
; /* ETHTOOL_GLINK */
379 ifdata
.ifr_data
= (caddr_t
)&ecmd
;
381 /* use ioctl to get IP address of an interface */
382 frr_elevate_privs(&zserv_privs
) {
383 sd
= vrf_socket(PF_INET
, SOCK_DGRAM
, IPPROTO_IP
,
387 if (IS_ZEBRA_DEBUG_KERNEL
)
388 zlog_debug("Failure to read interface %s speed: %d %s",
389 ifname
, errno
, safe_strerror(errno
));
392 /* Get the current link state for the interface */
393 rc
= vrf_ioctl(interface
->vrf_id
, sd
, SIOCETHTOOL
,
397 if (IS_ZEBRA_DEBUG_KERNEL
)
399 "IOCTL failure to read interface %s speed: %d %s",
400 ifname
, errno
, safe_strerror(errno
));
407 return (ecmd
.speed_hi
<< 16) | ecmd
.speed
;
410 uint32_t kernel_get_speed(struct interface
*ifp
)
412 return get_iflink_speed(ifp
);
415 static int netlink_extract_bridge_info(struct rtattr
*link_data
,
416 struct zebra_l2info_bridge
*bridge_info
)
418 struct rtattr
*attr
[IFLA_BR_MAX
+ 1];
420 memset(bridge_info
, 0, sizeof(*bridge_info
));
421 memset(attr
, 0, sizeof attr
);
422 parse_rtattr_nested(attr
, IFLA_BR_MAX
, link_data
);
423 if (attr
[IFLA_BR_VLAN_FILTERING
])
424 bridge_info
->vlan_aware
=
425 *(uint8_t *)RTA_DATA(attr
[IFLA_BR_VLAN_FILTERING
]);
429 static int netlink_extract_vlan_info(struct rtattr
*link_data
,
430 struct zebra_l2info_vlan
*vlan_info
)
432 struct rtattr
*attr
[IFLA_VLAN_MAX
+ 1];
435 memset(vlan_info
, 0, sizeof(*vlan_info
));
436 memset(attr
, 0, sizeof attr
);
437 parse_rtattr_nested(attr
, IFLA_VLAN_MAX
, link_data
);
438 if (!attr
[IFLA_VLAN_ID
]) {
439 if (IS_ZEBRA_DEBUG_KERNEL
)
440 zlog_debug("IFLA_VLAN_ID missing from VLAN IF message");
444 vid_in_msg
= *(vlanid_t
*)RTA_DATA(attr
[IFLA_VLAN_ID
]);
445 vlan_info
->vid
= vid_in_msg
;
449 static int netlink_extract_vxlan_info(struct rtattr
*link_data
,
450 struct zebra_l2info_vxlan
*vxl_info
)
452 struct rtattr
*attr
[IFLA_VXLAN_MAX
+ 1];
454 struct in_addr vtep_ip_in_msg
;
456 memset(vxl_info
, 0, sizeof(*vxl_info
));
457 memset(attr
, 0, sizeof attr
);
458 parse_rtattr_nested(attr
, IFLA_VXLAN_MAX
, link_data
);
459 if (!attr
[IFLA_VXLAN_ID
]) {
460 if (IS_ZEBRA_DEBUG_KERNEL
)
462 "IFLA_VXLAN_ID missing from VXLAN IF message");
466 vni_in_msg
= *(vni_t
*)RTA_DATA(attr
[IFLA_VXLAN_ID
]);
467 vxl_info
->vni
= vni_in_msg
;
468 if (!attr
[IFLA_VXLAN_LOCAL
]) {
469 if (IS_ZEBRA_DEBUG_KERNEL
)
471 "IFLA_VXLAN_LOCAL missing from VXLAN IF message");
474 *(struct in_addr
*)RTA_DATA(attr
[IFLA_VXLAN_LOCAL
]);
475 vxl_info
->vtep_ip
= vtep_ip_in_msg
;
482 * Extract and save L2 params (of interest) for an interface. When a
483 * bridge interface is added or updated, take further actions to map
484 * its members. Likewise, for VxLAN interface.
486 static void netlink_interface_update_l2info(struct interface
*ifp
,
487 struct rtattr
*link_data
, int add
)
492 if (IS_ZEBRA_IF_BRIDGE(ifp
)) {
493 struct zebra_l2info_bridge bridge_info
;
495 netlink_extract_bridge_info(link_data
, &bridge_info
);
496 zebra_l2_bridge_add_update(ifp
, &bridge_info
, add
);
497 } else if (IS_ZEBRA_IF_VLAN(ifp
)) {
498 struct zebra_l2info_vlan vlan_info
;
500 netlink_extract_vlan_info(link_data
, &vlan_info
);
501 zebra_l2_vlanif_update(ifp
, &vlan_info
);
502 } else if (IS_ZEBRA_IF_VXLAN(ifp
)) {
503 struct zebra_l2info_vxlan vxlan_info
;
505 netlink_extract_vxlan_info(link_data
, &vxlan_info
);
506 zebra_l2_vxlanif_add_update(ifp
, &vxlan_info
, add
);
510 static int netlink_bridge_interface(struct nlmsghdr
*h
, int len
, ns_id_t ns_id
,
514 struct ifinfomsg
*ifi
;
515 struct rtattr
*tb
[IFLA_MAX
+ 1];
516 struct interface
*ifp
;
517 struct rtattr
*aftb
[IFLA_BRIDGE_MAX
+ 1];
522 vlanid_t access_vlan
;
524 /* Fetch name and ifindex */
526 memset(tb
, 0, sizeof tb
);
527 netlink_parse_rtattr(tb
, IFLA_MAX
, IFLA_RTA(ifi
), len
);
529 if (tb
[IFLA_IFNAME
] == NULL
)
531 name
= (char *)RTA_DATA(tb
[IFLA_IFNAME
]);
533 /* The interface should already be known, if not discard. */
534 ifp
= if_lookup_by_index_per_ns(zebra_ns_lookup(ns_id
), ifi
->ifi_index
);
536 zlog_debug("Cannot find bridge IF %s(%u)", name
,
540 if (!IS_ZEBRA_IF_VXLAN(ifp
))
543 /* We are only interested in the access VLAN i.e., AF_SPEC */
544 if (!tb
[IFLA_AF_SPEC
])
547 /* There is a 1-to-1 mapping of VLAN to VxLAN - hence
548 * only 1 access VLAN is accepted.
550 memset(aftb
, 0, sizeof aftb
);
551 parse_rtattr_nested(aftb
, IFLA_BRIDGE_MAX
, tb
[IFLA_AF_SPEC
]);
552 if (!aftb
[IFLA_BRIDGE_VLAN_INFO
])
555 vinfo
= RTA_DATA(aftb
[IFLA_BRIDGE_VLAN_INFO
]);
556 if (!(vinfo
->flags
& BRIDGE_VLAN_INFO_PVID
))
559 access_vlan
= (vlanid_t
)vinfo
->vid
;
560 if (IS_ZEBRA_DEBUG_KERNEL
)
561 zlog_debug("Access VLAN %u for VxLAN IF %s(%u)", access_vlan
,
562 name
, ifi
->ifi_index
);
563 zebra_l2_vxlanif_update_access_vlan(ifp
, access_vlan
);
568 * Called from interface_lookup_netlink(). This function is only used
571 static int netlink_interface(struct nlmsghdr
*h
, ns_id_t ns_id
, int startup
)
574 struct ifinfomsg
*ifi
;
575 struct rtattr
*tb
[IFLA_MAX
+ 1];
576 struct rtattr
*linkinfo
[IFLA_MAX
+ 1];
577 struct interface
*ifp
;
581 char *slave_kind
= NULL
;
582 struct zebra_ns
*zns
;
583 vrf_id_t vrf_id
= VRF_DEFAULT
;
584 zebra_iftype_t zif_type
= ZEBRA_IF_OTHER
;
585 zebra_slave_iftype_t zif_slave_type
= ZEBRA_IF_SLAVE_NONE
;
586 ifindex_t bridge_ifindex
= IFINDEX_INTERNAL
;
587 ifindex_t link_ifindex
= IFINDEX_INTERNAL
;
588 struct zebra_if
*zif
;
590 zns
= zebra_ns_lookup(ns_id
);
593 if (h
->nlmsg_type
!= RTM_NEWLINK
)
596 len
= h
->nlmsg_len
- NLMSG_LENGTH(sizeof(struct ifinfomsg
));
598 zlog_err("%s: Message received from netlink is of a broken size: %d %zu",
601 (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg
)));
605 /* We are interested in some AF_BRIDGE notifications. */
606 if (ifi
->ifi_family
== AF_BRIDGE
)
607 return netlink_bridge_interface(h
, len
, ns_id
, startup
);
609 /* Looking up interface name. */
610 memset(tb
, 0, sizeof tb
);
611 memset(linkinfo
, 0, sizeof linkinfo
);
612 netlink_parse_rtattr(tb
, IFLA_MAX
, IFLA_RTA(ifi
), len
);
614 /* check for wireless messages to ignore */
615 if ((tb
[IFLA_WIRELESS
] != NULL
) && (ifi
->ifi_change
== 0)) {
616 if (IS_ZEBRA_DEBUG_KERNEL
)
617 zlog_debug("%s: ignoring IFLA_WIRELESS message",
622 if (tb
[IFLA_IFNAME
] == NULL
)
624 name
= (char *)RTA_DATA(tb
[IFLA_IFNAME
]);
626 if (tb
[IFLA_IFALIAS
])
627 desc
= (char *)RTA_DATA(tb
[IFLA_IFALIAS
]);
629 if (tb
[IFLA_LINKINFO
]) {
630 parse_rtattr_nested(linkinfo
, IFLA_INFO_MAX
, tb
[IFLA_LINKINFO
]);
632 if (linkinfo
[IFLA_INFO_KIND
])
633 kind
= RTA_DATA(linkinfo
[IFLA_INFO_KIND
]);
635 if (linkinfo
[IFLA_INFO_SLAVE_KIND
])
636 slave_kind
= RTA_DATA(linkinfo
[IFLA_INFO_SLAVE_KIND
]);
638 netlink_determine_zebra_iftype(kind
, &zif_type
);
641 /* If VRF, create the VRF structure itself. */
642 if (zif_type
== ZEBRA_IF_VRF
&& !vrf_is_backend_netns()) {
643 netlink_vrf_change(h
, tb
[IFLA_LINKINFO
], name
);
644 vrf_id
= (vrf_id_t
)ifi
->ifi_index
;
647 if (tb
[IFLA_MASTER
]) {
648 if (slave_kind
&& (strcmp(slave_kind
, "vrf") == 0)
649 && !vrf_is_backend_netns()) {
650 zif_slave_type
= ZEBRA_IF_SLAVE_VRF
;
651 vrf_id
= *(uint32_t *)RTA_DATA(tb
[IFLA_MASTER
]);
652 } else if (slave_kind
&& (strcmp(slave_kind
, "bridge") == 0)) {
653 zif_slave_type
= ZEBRA_IF_SLAVE_BRIDGE
;
655 *(ifindex_t
*)RTA_DATA(tb
[IFLA_MASTER
]);
657 zif_slave_type
= ZEBRA_IF_SLAVE_OTHER
;
659 if (vrf_is_backend_netns())
660 vrf_id
= (vrf_id_t
)ns_id
;
662 /* If linking to another interface, note it. */
664 link_ifindex
= *(ifindex_t
*)RTA_DATA(tb
[IFLA_LINK
]);
667 ifp
= if_get_by_name(name
, vrf_id
, 0);
668 set_ifindex(ifp
, ifi
->ifi_index
, zns
);
669 ifp
->flags
= ifi
->ifi_flags
& 0x0000fffff;
670 ifp
->mtu6
= ifp
->mtu
= *(uint32_t *)RTA_DATA(tb
[IFLA_MTU
]);
672 ifp
->speed
= get_iflink_speed(ifp
);
673 ifp
->ptm_status
= ZEBRA_PTM_STATUS_UNKNOWN
;
676 ifp
->desc
= XSTRDUP(MTYPE_TMP
, desc
);
678 /* Set zebra interface type */
679 zebra_if_set_ziftype(ifp
, zif_type
, zif_slave_type
);
680 if (IS_ZEBRA_IF_VRF(ifp
))
681 SET_FLAG(ifp
->status
, ZEBRA_INTERFACE_VRF_LOOPBACK
);
684 * Just set the @link/lower-device ifindex. During nldump interfaces are
685 * not ordered in any fashion so we may end up getting upper devices
686 * before lower devices. We will setup the real linkage once the dump
689 zif
= (struct zebra_if
*)ifp
->info
;
690 zif
->link_ifindex
= link_ifindex
;
692 /* Hardware type and address. */
693 ifp
->ll_type
= netlink_to_zebra_link_type(ifi
->ifi_type
);
694 netlink_interface_update_hw_addr(tb
, ifp
);
698 /* Extract and save L2 interface information, take additional actions.
700 netlink_interface_update_l2info(ifp
, linkinfo
[IFLA_INFO_DATA
], 1);
701 if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp
))
702 zebra_l2if_update_bridge_slave(ifp
, bridge_ifindex
);
707 /* Request for specific interface or address information from the kernel */
708 static int netlink_request_intf_addr(struct nlsock
*netlink_cmd
, int family
,
709 int type
, uint32_t filter_mask
)
713 struct ifinfomsg ifm
;
717 /* Form the request, specifying filter (rtattr) if needed. */
718 memset(&req
, 0, sizeof(req
));
719 req
.n
.nlmsg_type
= type
;
720 req
.n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ifinfomsg
));
721 req
.ifm
.ifi_family
= family
;
723 /* Include filter, if specified. */
725 addattr32(&req
.n
, sizeof(req
), IFLA_EXT_MASK
, filter_mask
);
727 return netlink_request(netlink_cmd
, &req
.n
);
730 /* Interface lookup by netlink socket. */
731 int interface_lookup_netlink(struct zebra_ns
*zns
)
734 struct zebra_dplane_info dp_info
;
735 struct nlsock
*netlink_cmd
= &zns
->netlink_cmd
;
737 /* Capture key info from ns struct */
738 zebra_dplane_info_from_zns(&dp_info
, zns
, true /*is_cmd*/);
740 /* Get interface information. */
741 ret
= netlink_request_intf_addr(netlink_cmd
, AF_PACKET
, RTM_GETLINK
, 0);
744 ret
= netlink_parse_info(netlink_interface
, netlink_cmd
, &dp_info
, 0,
749 /* Get interface information - for bridge interfaces. */
750 ret
= netlink_request_intf_addr(netlink_cmd
, AF_BRIDGE
, RTM_GETLINK
,
751 RTEXT_FILTER_BRVLAN
);
754 ret
= netlink_parse_info(netlink_interface
, netlink_cmd
, &dp_info
, 0,
759 /* Get interface information - for bridge interfaces. */
760 ret
= netlink_request_intf_addr(netlink_cmd
, AF_BRIDGE
, RTM_GETLINK
,
761 RTEXT_FILTER_BRVLAN
);
764 ret
= netlink_parse_info(netlink_interface
, netlink_cmd
, &dp_info
, 0,
770 zebra_if_update_all_links();
772 /* Get IPv4 address of the interfaces. */
773 ret
= netlink_request_intf_addr(netlink_cmd
, AF_INET
, RTM_GETADDR
, 0);
776 ret
= netlink_parse_info(netlink_interface_addr
, netlink_cmd
, &dp_info
,
781 /* Get IPv6 address of the interfaces. */
782 ret
= netlink_request_intf_addr(netlink_cmd
, AF_INET6
, RTM_GETADDR
, 0);
785 ret
= netlink_parse_info(netlink_interface_addr
, netlink_cmd
, &dp_info
,
793 int kernel_interface_set_master(struct interface
*master
,
794 struct interface
*slave
)
796 struct zebra_ns
*zns
= zebra_ns_lookup(NS_DEFAULT
);
800 struct ifinfomsg ifa
;
801 char buf
[NL_PKT_BUF_SIZE
];
804 memset(&req
, 0, sizeof req
);
806 req
.n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ifinfomsg
));
807 req
.n
.nlmsg_flags
= NLM_F_REQUEST
;
808 req
.n
.nlmsg_type
= RTM_SETLINK
;
809 req
.n
.nlmsg_pid
= zns
->netlink_cmd
.snl
.nl_pid
;
811 req
.ifa
.ifi_index
= slave
->ifindex
;
813 addattr_l(&req
.n
, sizeof req
, IFLA_MASTER
, &master
->ifindex
, 4);
814 addattr_l(&req
.n
, sizeof req
, IFLA_LINK
, &slave
->ifindex
, 4);
816 return netlink_talk(netlink_talk_filter
, &req
.n
, &zns
->netlink_cmd
, zns
,
820 /* Interface address modification. */
821 static int netlink_address(int cmd
, int family
, struct interface
*ifp
,
822 struct connected
*ifc
)
829 struct ifaddrmsg ifa
;
830 char buf
[NL_PKT_BUF_SIZE
];
833 struct zebra_ns
*zns
;
835 if (vrf_is_backend_netns())
836 zns
= zebra_ns_lookup((ns_id_t
)ifp
->vrf_id
);
838 zns
= zebra_ns_lookup(NS_DEFAULT
);
840 memset(&req
, 0, sizeof req
- NL_PKT_BUF_SIZE
);
842 bytelen
= (family
== AF_INET
? 4 : 16);
844 req
.n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ifaddrmsg
));
845 req
.n
.nlmsg_flags
= NLM_F_REQUEST
;
846 req
.n
.nlmsg_type
= cmd
;
847 req
.n
.nlmsg_pid
= zns
->netlink_cmd
.snl
.nl_pid
;
849 req
.ifa
.ifa_family
= family
;
851 req
.ifa
.ifa_index
= ifp
->ifindex
;
853 addattr_l(&req
.n
, sizeof req
, IFA_LOCAL
, &p
->u
.prefix
, bytelen
);
855 if (family
== AF_INET
) {
856 if (CONNECTED_PEER(ifc
)) {
857 p
= ifc
->destination
;
858 addattr_l(&req
.n
, sizeof req
, IFA_ADDRESS
, &p
->u
.prefix
,
860 } else if (cmd
== RTM_NEWADDR
&& ifc
->destination
) {
861 p
= ifc
->destination
;
862 addattr_l(&req
.n
, sizeof req
, IFA_BROADCAST
,
863 &p
->u
.prefix
, bytelen
);
867 /* p is now either ifc->address or ifc->destination */
868 req
.ifa
.ifa_prefixlen
= p
->prefixlen
;
870 if (CHECK_FLAG(ifc
->flags
, ZEBRA_IFA_SECONDARY
))
871 SET_FLAG(req
.ifa
.ifa_flags
, IFA_F_SECONDARY
);
874 addattr_l(&req
.n
, sizeof req
, IFA_LABEL
, ifc
->label
,
875 strlen(ifc
->label
) + 1);
877 return netlink_talk(netlink_talk_filter
, &req
.n
, &zns
->netlink_cmd
, zns
,
881 int kernel_address_add_ipv4(struct interface
*ifp
, struct connected
*ifc
)
883 return netlink_address(RTM_NEWADDR
, AF_INET
, ifp
, ifc
);
886 int kernel_address_delete_ipv4(struct interface
*ifp
, struct connected
*ifc
)
888 return netlink_address(RTM_DELADDR
, AF_INET
, ifp
, ifc
);
891 int kernel_address_add_ipv6(struct interface
*ifp
, struct connected
*ifc
)
893 return netlink_address(RTM_NEWADDR
, AF_INET6
, ifp
, ifc
);
896 int kernel_address_delete_ipv6(struct interface
*ifp
, struct connected
*ifc
)
898 return netlink_address(RTM_DELADDR
, AF_INET6
, ifp
, ifc
);
901 int netlink_interface_addr(struct nlmsghdr
*h
, ns_id_t ns_id
, int startup
)
904 struct ifaddrmsg
*ifa
;
905 struct rtattr
*tb
[IFA_MAX
+ 1];
906 struct interface
*ifp
;
911 struct zebra_ns
*zns
;
913 zns
= zebra_ns_lookup(ns_id
);
916 if (ifa
->ifa_family
!= AF_INET
&& ifa
->ifa_family
!= AF_INET6
) {
918 EC_ZEBRA_UNKNOWN_FAMILY
,
919 "Invalid address family: %u received from kernel interface addr change: %s",
920 ifa
->ifa_family
, nl_msg_type_to_str(h
->nlmsg_type
));
924 if (h
->nlmsg_type
!= RTM_NEWADDR
&& h
->nlmsg_type
!= RTM_DELADDR
)
927 len
= h
->nlmsg_len
- NLMSG_LENGTH(sizeof(struct ifaddrmsg
));
929 zlog_err("%s: Message received from netlink is of a broken size: %d %zu",
932 (size_t)NLMSG_LENGTH(sizeof(struct ifaddrmsg
)));
936 memset(tb
, 0, sizeof tb
);
937 netlink_parse_rtattr(tb
, IFA_MAX
, IFA_RTA(ifa
), len
);
939 ifp
= if_lookup_by_index_per_ns(zns
, ifa
->ifa_index
);
943 "netlink_interface_addr can't find interface by index %d",
948 if (IS_ZEBRA_DEBUG_KERNEL
) /* remove this line to see initial ifcfg */
951 zlog_debug("netlink_interface_addr %s %s flags 0x%x:",
952 nl_msg_type_to_str(h
->nlmsg_type
), ifp
->name
,
955 zlog_debug(" IFA_LOCAL %s/%d",
956 inet_ntop(ifa
->ifa_family
,
957 RTA_DATA(tb
[IFA_LOCAL
]), buf
,
961 zlog_debug(" IFA_ADDRESS %s/%d",
962 inet_ntop(ifa
->ifa_family
,
963 RTA_DATA(tb
[IFA_ADDRESS
]), buf
,
966 if (tb
[IFA_BROADCAST
])
967 zlog_debug(" IFA_BROADCAST %s/%d",
968 inet_ntop(ifa
->ifa_family
,
969 RTA_DATA(tb
[IFA_BROADCAST
]), buf
,
972 if (tb
[IFA_LABEL
] && strcmp(ifp
->name
, RTA_DATA(tb
[IFA_LABEL
])))
973 zlog_debug(" IFA_LABEL %s",
974 (char *)RTA_DATA(tb
[IFA_LABEL
]));
976 if (tb
[IFA_CACHEINFO
]) {
977 struct ifa_cacheinfo
*ci
= RTA_DATA(tb
[IFA_CACHEINFO
]);
978 zlog_debug(" IFA_CACHEINFO pref %d, valid %d",
979 ci
->ifa_prefered
, ci
->ifa_valid
);
983 /* logic copied from iproute2/ip/ipaddress.c:print_addrinfo() */
984 if (tb
[IFA_LOCAL
] == NULL
)
985 tb
[IFA_LOCAL
] = tb
[IFA_ADDRESS
];
986 if (tb
[IFA_ADDRESS
] == NULL
)
987 tb
[IFA_ADDRESS
] = tb
[IFA_LOCAL
];
989 /* local interface address */
990 addr
= (tb
[IFA_LOCAL
] ? RTA_DATA(tb
[IFA_LOCAL
]) : NULL
);
992 /* is there a peer address? */
994 && memcmp(RTA_DATA(tb
[IFA_ADDRESS
]), RTA_DATA(tb
[IFA_LOCAL
]),
995 RTA_PAYLOAD(tb
[IFA_ADDRESS
]))) {
996 broad
= RTA_DATA(tb
[IFA_ADDRESS
]);
997 SET_FLAG(flags
, ZEBRA_IFA_PEER
);
999 /* seeking a broadcast address */
1000 broad
= (tb
[IFA_BROADCAST
] ? RTA_DATA(tb
[IFA_BROADCAST
])
1003 /* addr is primary key, SOL if we don't have one */
1005 zlog_debug("%s: NULL address", __func__
);
1010 if (ifa
->ifa_flags
& IFA_F_SECONDARY
)
1011 SET_FLAG(flags
, ZEBRA_IFA_SECONDARY
);
1015 label
= (char *)RTA_DATA(tb
[IFA_LABEL
]);
1017 if (label
&& strcmp(ifp
->name
, label
) == 0)
1020 /* Register interface address to the interface. */
1021 if (ifa
->ifa_family
== AF_INET
) {
1022 if (ifa
->ifa_prefixlen
> IPV4_MAX_BITLEN
) {
1024 "Invalid prefix length: %u received from kernel interface addr change: %s",
1026 nl_msg_type_to_str(h
->nlmsg_type
));
1029 if (h
->nlmsg_type
== RTM_NEWADDR
)
1030 connected_add_ipv4(ifp
, flags
, (struct in_addr
*)addr
,
1032 (struct in_addr
*)broad
, label
);
1034 connected_delete_ipv4(
1035 ifp
, flags
, (struct in_addr
*)addr
,
1036 ifa
->ifa_prefixlen
, (struct in_addr
*)broad
);
1038 if (ifa
->ifa_family
== AF_INET6
) {
1039 if (ifa
->ifa_prefixlen
> IPV6_MAX_BITLEN
) {
1041 "Invalid prefix length: %u received from kernel interface addr change: %s",
1043 nl_msg_type_to_str(h
->nlmsg_type
));
1046 if (h
->nlmsg_type
== RTM_NEWADDR
) {
1047 /* Only consider valid addresses; we'll not get a
1049 * the kernel till IPv6 DAD has completed, but at init
1051 * does query for and will receive all addresses.
1053 if (!(ifa
->ifa_flags
1054 & (IFA_F_DADFAILED
| IFA_F_TENTATIVE
)))
1055 connected_add_ipv6(ifp
, flags
,
1056 (struct in6_addr
*)addr
,
1057 (struct in6_addr
*)broad
,
1058 ifa
->ifa_prefixlen
, label
);
1060 connected_delete_ipv6(ifp
, (struct in6_addr
*)addr
,
1061 (struct in6_addr
*)broad
,
1062 ifa
->ifa_prefixlen
);
1068 int netlink_link_change(struct nlmsghdr
*h
, ns_id_t ns_id
, int startup
)
1071 struct ifinfomsg
*ifi
;
1072 struct rtattr
*tb
[IFLA_MAX
+ 1];
1073 struct rtattr
*linkinfo
[IFLA_MAX
+ 1];
1074 struct interface
*ifp
;
1078 char *slave_kind
= NULL
;
1079 struct zebra_ns
*zns
;
1080 vrf_id_t vrf_id
= VRF_DEFAULT
;
1081 zebra_iftype_t zif_type
= ZEBRA_IF_OTHER
;
1082 zebra_slave_iftype_t zif_slave_type
= ZEBRA_IF_SLAVE_NONE
;
1083 ifindex_t bridge_ifindex
= IFINDEX_INTERNAL
;
1084 ifindex_t link_ifindex
= IFINDEX_INTERNAL
;
1087 zns
= zebra_ns_lookup(ns_id
);
1088 ifi
= NLMSG_DATA(h
);
1090 /* assume if not default zns, then new VRF */
1091 if (!(h
->nlmsg_type
== RTM_NEWLINK
|| h
->nlmsg_type
== RTM_DELLINK
)) {
1092 /* If this is not link add/delete message so print warning. */
1093 zlog_debug("netlink_link_change: wrong kernel message %s",
1094 nl_msg_type_to_str(h
->nlmsg_type
));
1098 if (!(ifi
->ifi_family
== AF_UNSPEC
|| ifi
->ifi_family
== AF_BRIDGE
1099 || ifi
->ifi_family
== AF_INET6
)) {
1101 EC_ZEBRA_UNKNOWN_FAMILY
,
1102 "Invalid address family: %u received from kernel link change: %s",
1103 ifi
->ifi_family
, nl_msg_type_to_str(h
->nlmsg_type
));
1107 len
= h
->nlmsg_len
- NLMSG_LENGTH(sizeof(struct ifinfomsg
));
1109 zlog_err("%s: Message received from netlink is of a broken size %d %zu",
1110 __PRETTY_FUNCTION__
, h
->nlmsg_len
,
1111 (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg
)));
1115 /* We are interested in some AF_BRIDGE notifications. */
1116 if (ifi
->ifi_family
== AF_BRIDGE
)
1117 return netlink_bridge_interface(h
, len
, ns_id
, startup
);
1119 /* Looking up interface name. */
1120 memset(tb
, 0, sizeof tb
);
1121 memset(linkinfo
, 0, sizeof linkinfo
);
1122 netlink_parse_rtattr(tb
, IFLA_MAX
, IFLA_RTA(ifi
), len
);
1124 /* check for wireless messages to ignore */
1125 if ((tb
[IFLA_WIRELESS
] != NULL
) && (ifi
->ifi_change
== 0)) {
1126 if (IS_ZEBRA_DEBUG_KERNEL
)
1127 zlog_debug("%s: ignoring IFLA_WIRELESS message",
1132 if (tb
[IFLA_IFNAME
] == NULL
)
1134 name
= (char *)RTA_DATA(tb
[IFLA_IFNAME
]);
1136 if (tb
[IFLA_LINKINFO
]) {
1137 parse_rtattr_nested(linkinfo
, IFLA_INFO_MAX
, tb
[IFLA_LINKINFO
]);
1139 if (linkinfo
[IFLA_INFO_KIND
])
1140 kind
= RTA_DATA(linkinfo
[IFLA_INFO_KIND
]);
1142 if (linkinfo
[IFLA_INFO_SLAVE_KIND
])
1143 slave_kind
= RTA_DATA(linkinfo
[IFLA_INFO_SLAVE_KIND
]);
1145 netlink_determine_zebra_iftype(kind
, &zif_type
);
1148 /* If linking to another interface, note it. */
1150 link_ifindex
= *(ifindex_t
*)RTA_DATA(tb
[IFLA_LINK
]);
1152 if (tb
[IFLA_IFALIAS
]) {
1153 desc
= (char *)RTA_DATA(tb
[IFLA_IFALIAS
]);
1156 /* If VRF, create or update the VRF structure itself. */
1157 if (zif_type
== ZEBRA_IF_VRF
&& !vrf_is_backend_netns()) {
1158 netlink_vrf_change(h
, tb
[IFLA_LINKINFO
], name
);
1159 vrf_id
= (vrf_id_t
)ifi
->ifi_index
;
1162 /* See if interface is present. */
1163 ifp
= if_lookup_by_name_per_ns(zns
, name
);
1167 XFREE(MTYPE_TMP
, ifp
->desc
);
1169 ifp
->desc
= XSTRDUP(MTYPE_TMP
, desc
);
1172 if (h
->nlmsg_type
== RTM_NEWLINK
) {
1173 if (tb
[IFLA_MASTER
]) {
1174 if (slave_kind
&& (strcmp(slave_kind
, "vrf") == 0)
1175 && !vrf_is_backend_netns()) {
1176 zif_slave_type
= ZEBRA_IF_SLAVE_VRF
;
1177 vrf_id
= *(uint32_t *)RTA_DATA(tb
[IFLA_MASTER
]);
1178 } else if (slave_kind
1179 && (strcmp(slave_kind
, "bridge") == 0)) {
1180 zif_slave_type
= ZEBRA_IF_SLAVE_BRIDGE
;
1182 *(ifindex_t
*)RTA_DATA(tb
[IFLA_MASTER
]);
1184 zif_slave_type
= ZEBRA_IF_SLAVE_OTHER
;
1186 if (vrf_is_backend_netns())
1187 vrf_id
= (vrf_id_t
)ns_id
;
1189 || !CHECK_FLAG(ifp
->status
, ZEBRA_INTERFACE_ACTIVE
)) {
1190 /* Add interface notification from kernel */
1191 if (IS_ZEBRA_DEBUG_KERNEL
)
1193 "RTM_NEWLINK ADD for %s(%u) vrf_id %u type %d "
1194 "sl_type %d master %u flags 0x%x",
1195 name
, ifi
->ifi_index
, vrf_id
, zif_type
,
1196 zif_slave_type
, bridge_ifindex
,
1200 /* unknown interface */
1201 ifp
= if_get_by_name(name
, vrf_id
, 0);
1203 /* pre-configured interface, learnt now */
1204 if (ifp
->vrf_id
!= vrf_id
)
1205 if_update_to_new_vrf(ifp
, vrf_id
);
1208 /* Update interface information. */
1209 set_ifindex(ifp
, ifi
->ifi_index
, zns
);
1210 ifp
->flags
= ifi
->ifi_flags
& 0x0000fffff;
1211 if (!tb
[IFLA_MTU
]) {
1213 "RTM_NEWLINK for interface %s(%u) without MTU set",
1214 name
, ifi
->ifi_index
);
1217 ifp
->mtu6
= ifp
->mtu
= *(int *)RTA_DATA(tb
[IFLA_MTU
]);
1219 ifp
->ptm_status
= ZEBRA_PTM_STATUS_UNKNOWN
;
1221 /* Set interface type */
1222 zebra_if_set_ziftype(ifp
, zif_type
, zif_slave_type
);
1223 if (IS_ZEBRA_IF_VRF(ifp
))
1224 SET_FLAG(ifp
->status
,
1225 ZEBRA_INTERFACE_VRF_LOOPBACK
);
1228 zebra_if_update_link(ifp
, link_ifindex
, ns_id
);
1230 netlink_interface_update_hw_addr(tb
, ifp
);
1232 /* Inform clients, install any configured addresses. */
1235 /* Extract and save L2 interface information, take
1236 * additional actions. */
1237 netlink_interface_update_l2info(
1238 ifp
, linkinfo
[IFLA_INFO_DATA
], 1);
1239 if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp
))
1240 zebra_l2if_update_bridge_slave(ifp
,
1242 } else if (ifp
->vrf_id
!= vrf_id
) {
1243 /* VRF change for an interface. */
1244 if (IS_ZEBRA_DEBUG_KERNEL
)
1246 "RTM_NEWLINK vrf-change for %s(%u) "
1247 "vrf_id %u -> %u flags 0x%x",
1248 name
, ifp
->ifindex
, ifp
->vrf_id
, vrf_id
,
1251 if_handle_vrf_change(ifp
, vrf_id
);
1253 int was_bridge_slave
;
1255 /* Interface update. */
1256 if (IS_ZEBRA_DEBUG_KERNEL
)
1258 "RTM_NEWLINK update for %s(%u) "
1259 "sl_type %d master %u flags 0x%x",
1260 name
, ifp
->ifindex
, zif_slave_type
,
1261 bridge_ifindex
, ifi
->ifi_flags
);
1263 set_ifindex(ifp
, ifi
->ifi_index
, zns
);
1264 if (!tb
[IFLA_MTU
]) {
1266 "RTM_NEWLINK for interface %s(%u) without MTU set",
1267 name
, ifi
->ifi_index
);
1270 ifp
->mtu6
= ifp
->mtu
= *(int *)RTA_DATA(tb
[IFLA_MTU
]);
1273 /* Update interface type - NOTE: Only slave_type can
1275 was_bridge_slave
= IS_ZEBRA_IF_BRIDGE_SLAVE(ifp
);
1276 zebra_if_set_ziftype(ifp
, zif_type
, zif_slave_type
);
1278 netlink_interface_update_hw_addr(tb
, ifp
);
1280 if (if_is_no_ptm_operative(ifp
)) {
1281 ifp
->flags
= ifi
->ifi_flags
& 0x0000fffff;
1282 if (!if_is_no_ptm_operative(ifp
)) {
1283 if (IS_ZEBRA_DEBUG_KERNEL
)
1285 "Intf %s(%u) has gone DOWN",
1286 name
, ifp
->ifindex
);
1288 } else if (if_is_operative(ifp
)) {
1289 /* Must notify client daemons of new
1290 * interface status. */
1291 if (IS_ZEBRA_DEBUG_KERNEL
)
1293 "Intf %s(%u) PTM up, notifying clients",
1294 name
, ifp
->ifindex
);
1295 zebra_interface_up_update(ifp
);
1298 ifp
->flags
= ifi
->ifi_flags
& 0x0000fffff;
1299 if (if_is_operative(ifp
)) {
1300 if (IS_ZEBRA_DEBUG_KERNEL
)
1302 "Intf %s(%u) has come UP",
1303 name
, ifp
->ifindex
);
1308 /* Extract and save L2 interface information, take
1309 * additional actions. */
1310 netlink_interface_update_l2info(
1311 ifp
, linkinfo
[IFLA_INFO_DATA
], 0);
1312 if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp
) || was_bridge_slave
)
1313 zebra_l2if_update_bridge_slave(ifp
,
1317 /* Delete interface notification from kernel */
1319 if (IS_ZEBRA_DEBUG_KERNEL
)
1321 "RTM_DELLINK for unknown interface %s(%u)",
1322 name
, ifi
->ifi_index
);
1326 if (IS_ZEBRA_DEBUG_KERNEL
)
1327 zlog_debug("RTM_DELLINK for %s(%u)", name
,
1330 UNSET_FLAG(ifp
->status
, ZEBRA_INTERFACE_VRF_LOOPBACK
);
1332 /* Special handling for bridge or VxLAN interfaces. */
1333 if (IS_ZEBRA_IF_BRIDGE(ifp
))
1334 zebra_l2_bridge_del(ifp
);
1335 else if (IS_ZEBRA_IF_VXLAN(ifp
))
1336 zebra_l2_vxlanif_del(ifp
);
1338 if (!IS_ZEBRA_IF_VRF(ifp
))
1339 if_delete_update(ifp
);
1345 /* Interface information read by netlink. */
1346 void interface_list(struct zebra_ns
*zns
)
1348 interface_lookup_netlink(zns
);
1351 #endif /* GNU_LINUX */