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"
71 #include "zebra/zebra_vxlan.h"
73 extern struct zebra_privs_t zserv_privs
;
75 /* Note: on netlink systems, there should be a 1-to-1 mapping between interface
76 names and ifindex values. */
77 static void set_ifindex(struct interface
*ifp
, ifindex_t ifi_index
,
80 struct interface
*oifp
;
82 if (((oifp
= if_lookup_by_index_per_ns(zns
, ifi_index
)) != NULL
)
84 if (ifi_index
== IFINDEX_INTERNAL
)
87 "Netlink is setting interface %s ifindex to reserved internal value %u",
88 ifp
->name
, ifi_index
);
90 if (IS_ZEBRA_DEBUG_KERNEL
)
92 "interface index %d was renamed from %s to %s",
93 ifi_index
, oifp
->name
, ifp
->name
);
97 "interface rename detected on up interface: index %d was renamed from %s to %s, results are uncertain!",
98 ifi_index
, oifp
->name
, ifp
->name
);
99 if_delete_update(oifp
);
102 if_set_index(ifp
, ifi_index
);
105 /* Utility function to parse hardware link-layer address and update ifp */
106 static void netlink_interface_update_hw_addr(struct rtattr
**tb
,
107 struct interface
*ifp
)
111 if (tb
[IFLA_ADDRESS
]) {
114 hw_addr_len
= RTA_PAYLOAD(tb
[IFLA_ADDRESS
]);
116 if (hw_addr_len
> INTERFACE_HWADDR_MAX
)
117 zlog_debug("Hardware address is too large: %d",
120 ifp
->hw_addr_len
= hw_addr_len
;
121 memcpy(ifp
->hw_addr
, RTA_DATA(tb
[IFLA_ADDRESS
]),
124 for (i
= 0; i
< hw_addr_len
; i
++)
125 if (ifp
->hw_addr
[i
] != 0)
128 if (i
== hw_addr_len
)
129 ifp
->hw_addr_len
= 0;
131 ifp
->hw_addr_len
= hw_addr_len
;
136 static enum zebra_link_type
netlink_to_zebra_link_type(unsigned int hwt
)
140 return ZEBRA_LLT_ETHER
;
142 return ZEBRA_LLT_EETHER
;
144 return ZEBRA_LLT_AX25
;
146 return ZEBRA_LLT_PRONET
;
148 return ZEBRA_LLT_IEEE802
;
150 return ZEBRA_LLT_ARCNET
;
151 case ARPHRD_APPLETLK
:
152 return ZEBRA_LLT_APPLETLK
;
154 return ZEBRA_LLT_DLCI
;
156 return ZEBRA_LLT_ATM
;
157 case ARPHRD_METRICOM
:
158 return ZEBRA_LLT_METRICOM
;
159 case ARPHRD_IEEE1394
:
160 return ZEBRA_LLT_IEEE1394
;
162 return ZEBRA_LLT_EUI64
;
163 case ARPHRD_INFINIBAND
:
164 return ZEBRA_LLT_INFINIBAND
;
166 return ZEBRA_LLT_SLIP
;
168 return ZEBRA_LLT_CSLIP
;
170 return ZEBRA_LLT_SLIP6
;
172 return ZEBRA_LLT_CSLIP6
;
174 return ZEBRA_LLT_RSRVD
;
176 return ZEBRA_LLT_ADAPT
;
178 return ZEBRA_LLT_ROSE
;
180 return ZEBRA_LLT_X25
;
182 return ZEBRA_LLT_PPP
;
184 return ZEBRA_LLT_CHDLC
;
186 return ZEBRA_LLT_LAPB
;
188 return ZEBRA_LLT_RAWHDLC
;
190 return ZEBRA_LLT_IPIP
;
192 return ZEBRA_LLT_IPIP6
;
194 return ZEBRA_LLT_FRAD
;
196 return ZEBRA_LLT_SKIP
;
197 case ARPHRD_LOOPBACK
:
198 return ZEBRA_LLT_LOOPBACK
;
199 case ARPHRD_LOCALTLK
:
200 return ZEBRA_LLT_LOCALTLK
;
202 return ZEBRA_LLT_FDDI
;
204 return ZEBRA_LLT_SIT
;
206 return ZEBRA_LLT_IPDDP
;
208 return ZEBRA_LLT_IPGRE
;
210 return ZEBRA_LLT_PIMREG
;
212 return ZEBRA_LLT_HIPPI
;
214 return ZEBRA_LLT_ECONET
;
216 return ZEBRA_LLT_IRDA
;
218 return ZEBRA_LLT_FCPP
;
220 return ZEBRA_LLT_FCAL
;
222 return ZEBRA_LLT_FCPL
;
223 case ARPHRD_FCFABRIC
:
224 return ZEBRA_LLT_FCFABRIC
;
225 case ARPHRD_IEEE802_TR
:
226 return ZEBRA_LLT_IEEE802_TR
;
227 case ARPHRD_IEEE80211
:
228 return ZEBRA_LLT_IEEE80211
;
229 #ifdef ARPHRD_IEEE802154
230 case ARPHRD_IEEE802154
:
231 return ZEBRA_LLT_IEEE802154
;
235 return ZEBRA_LLT_IP6GRE
;
237 #ifdef ARPHRD_IEEE802154_PHY
238 case ARPHRD_IEEE802154_PHY
:
239 return ZEBRA_LLT_IEEE802154_PHY
;
243 return ZEBRA_LLT_UNKNOWN
;
247 static void netlink_determine_zebra_iftype(const char *kind
,
248 zebra_iftype_t
*zif_type
)
250 *zif_type
= ZEBRA_IF_OTHER
;
255 if (strcmp(kind
, "vrf") == 0)
256 *zif_type
= ZEBRA_IF_VRF
;
257 else if (strcmp(kind
, "bridge") == 0)
258 *zif_type
= ZEBRA_IF_BRIDGE
;
259 else if (strcmp(kind
, "vlan") == 0)
260 *zif_type
= ZEBRA_IF_VLAN
;
261 else if (strcmp(kind
, "vxlan") == 0)
262 *zif_type
= ZEBRA_IF_VXLAN
;
263 else if (strcmp(kind
, "macvlan") == 0)
264 *zif_type
= ZEBRA_IF_MACVLAN
;
265 else if (strcmp(kind
, "veth") == 0)
266 *zif_type
= ZEBRA_IF_VETH
;
267 else if (strcmp(kind
, "bond") == 0)
268 *zif_type
= ZEBRA_IF_BOND
;
269 else if (strcmp(kind
, "bond_slave") == 0)
270 *zif_type
= ZEBRA_IF_BOND_SLAVE
;
273 #define parse_rtattr_nested(tb, max, rta) \
274 netlink_parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))
276 static void netlink_vrf_change(struct nlmsghdr
*h
, struct rtattr
*tb
,
279 struct ifinfomsg
*ifi
;
280 struct rtattr
*linkinfo
[IFLA_INFO_MAX
+ 1];
281 struct rtattr
*attr
[IFLA_VRF_MAX
+ 1];
283 struct zebra_vrf
*zvrf
;
284 uint32_t nl_table_id
;
288 memset(linkinfo
, 0, sizeof linkinfo
);
289 parse_rtattr_nested(linkinfo
, IFLA_INFO_MAX
, tb
);
291 if (!linkinfo
[IFLA_INFO_DATA
]) {
292 if (IS_ZEBRA_DEBUG_KERNEL
)
294 "%s: IFLA_INFO_DATA missing from VRF message: %s",
299 memset(attr
, 0, sizeof attr
);
300 parse_rtattr_nested(attr
, IFLA_VRF_MAX
, linkinfo
[IFLA_INFO_DATA
]);
301 if (!attr
[IFLA_VRF_TABLE
]) {
302 if (IS_ZEBRA_DEBUG_KERNEL
)
304 "%s: IFLA_VRF_TABLE missing from VRF message: %s",
309 nl_table_id
= *(uint32_t *)RTA_DATA(attr
[IFLA_VRF_TABLE
]);
311 if (h
->nlmsg_type
== RTM_NEWLINK
) {
312 if (IS_ZEBRA_DEBUG_KERNEL
)
313 zlog_debug("RTM_NEWLINK for VRF %s(%u) table %u", name
,
314 ifi
->ifi_index
, nl_table_id
);
317 * vrf_get is implied creation if it does not exist
319 vrf
= vrf_get((vrf_id_t
)ifi
->ifi_index
,
320 name
); // It would create vrf
322 flog_err(EC_LIB_INTERFACE
, "VRF %s id %u not created",
323 name
, ifi
->ifi_index
);
328 * This is the only place that we get the actual kernel table_id
329 * being used. We need it to set the table_id of the routes
330 * we are passing to the kernel.... And to throw some totally
331 * awesome parties. that too.
333 * At this point we *must* have a zvrf because the vrf_create
334 * callback creates one. We *must* set the table id
335 * before the vrf_enable because of( at the very least )
336 * static routes being delayed for installation until
337 * during the vrf_enable callbacks.
339 zvrf
= (struct zebra_vrf
*)vrf
->info
;
340 zvrf
->table_id
= nl_table_id
;
342 /* Enable the created VRF. */
343 if (!vrf_enable(vrf
)) {
344 flog_err(EC_LIB_INTERFACE
,
345 "Failed to enable VRF %s id %u", name
,
350 } else // h->nlmsg_type == RTM_DELLINK
352 if (IS_ZEBRA_DEBUG_KERNEL
)
353 zlog_debug("RTM_DELLINK for VRF %s(%u)", name
,
356 vrf
= vrf_lookup_by_id((vrf_id_t
)ifi
->ifi_index
);
359 flog_warn(EC_ZEBRA_VRF_NOT_FOUND
, "%s: vrf not found",
368 static int get_iflink_speed(struct interface
*interface
)
371 struct ethtool_cmd ecmd
;
374 const char *ifname
= interface
->name
;
376 /* initialize struct */
377 memset(&ifdata
, 0, sizeof(ifdata
));
379 /* set interface name */
380 strlcpy(ifdata
.ifr_name
, ifname
, sizeof(ifdata
.ifr_name
));
382 /* initialize ethtool interface */
383 memset(&ecmd
, 0, sizeof(ecmd
));
384 ecmd
.cmd
= ETHTOOL_GSET
; /* ETHTOOL_GLINK */
385 ifdata
.ifr_data
= (caddr_t
)&ecmd
;
387 /* use ioctl to get IP address of an interface */
388 frr_elevate_privs(&zserv_privs
) {
389 sd
= vrf_socket(PF_INET
, SOCK_DGRAM
, IPPROTO_IP
,
390 vrf_to_id(interface
->vrf
),
393 if (IS_ZEBRA_DEBUG_KERNEL
)
394 zlog_debug("Failure to read interface %s speed: %d %s",
395 ifname
, errno
, safe_strerror(errno
));
398 /* Get the current link state for the interface */
399 rc
= vrf_ioctl(vrf_to_id(interface
->vrf
), sd
, SIOCETHTOOL
,
403 if (errno
!= EOPNOTSUPP
&& IS_ZEBRA_DEBUG_KERNEL
)
405 "IOCTL failure to read interface %s speed: %d %s",
406 ifname
, errno
, safe_strerror(errno
));
413 return (ecmd
.speed_hi
<< 16) | ecmd
.speed
;
416 uint32_t kernel_get_speed(struct interface
*ifp
)
418 return get_iflink_speed(ifp
);
421 static int netlink_extract_bridge_info(struct rtattr
*link_data
,
422 struct zebra_l2info_bridge
*bridge_info
)
424 struct rtattr
*attr
[IFLA_BR_MAX
+ 1];
426 memset(bridge_info
, 0, sizeof(*bridge_info
));
427 memset(attr
, 0, sizeof attr
);
428 parse_rtattr_nested(attr
, IFLA_BR_MAX
, link_data
);
429 if (attr
[IFLA_BR_VLAN_FILTERING
])
430 bridge_info
->vlan_aware
=
431 *(uint8_t *)RTA_DATA(attr
[IFLA_BR_VLAN_FILTERING
]);
435 static int netlink_extract_vlan_info(struct rtattr
*link_data
,
436 struct zebra_l2info_vlan
*vlan_info
)
438 struct rtattr
*attr
[IFLA_VLAN_MAX
+ 1];
441 memset(vlan_info
, 0, sizeof(*vlan_info
));
442 memset(attr
, 0, sizeof attr
);
443 parse_rtattr_nested(attr
, IFLA_VLAN_MAX
, link_data
);
444 if (!attr
[IFLA_VLAN_ID
]) {
445 if (IS_ZEBRA_DEBUG_KERNEL
)
446 zlog_debug("IFLA_VLAN_ID missing from VLAN IF message");
450 vid_in_msg
= *(vlanid_t
*)RTA_DATA(attr
[IFLA_VLAN_ID
]);
451 vlan_info
->vid
= vid_in_msg
;
455 static int netlink_extract_vxlan_info(struct rtattr
*link_data
,
456 struct zebra_l2info_vxlan
*vxl_info
)
458 struct rtattr
*attr
[IFLA_VXLAN_MAX
+ 1];
460 struct in_addr vtep_ip_in_msg
;
462 memset(vxl_info
, 0, sizeof(*vxl_info
));
463 memset(attr
, 0, sizeof attr
);
464 parse_rtattr_nested(attr
, IFLA_VXLAN_MAX
, link_data
);
465 if (!attr
[IFLA_VXLAN_ID
]) {
466 if (IS_ZEBRA_DEBUG_KERNEL
)
468 "IFLA_VXLAN_ID missing from VXLAN IF message");
472 vni_in_msg
= *(vni_t
*)RTA_DATA(attr
[IFLA_VXLAN_ID
]);
473 vxl_info
->vni
= vni_in_msg
;
474 if (!attr
[IFLA_VXLAN_LOCAL
]) {
475 if (IS_ZEBRA_DEBUG_KERNEL
)
477 "IFLA_VXLAN_LOCAL missing from VXLAN IF message");
480 *(struct in_addr
*)RTA_DATA(attr
[IFLA_VXLAN_LOCAL
]);
481 vxl_info
->vtep_ip
= vtep_ip_in_msg
;
484 if (attr
[IFLA_VXLAN_GROUP
]) {
485 vxl_info
->mcast_grp
=
486 *(struct in_addr
*)RTA_DATA(attr
[IFLA_VXLAN_GROUP
]);
493 * Extract and save L2 params (of interest) for an interface. When a
494 * bridge interface is added or updated, take further actions to map
495 * its members. Likewise, for VxLAN interface.
497 static void netlink_interface_update_l2info(struct interface
*ifp
,
498 struct rtattr
*link_data
, int add
)
503 if (IS_ZEBRA_IF_BRIDGE(ifp
)) {
504 struct zebra_l2info_bridge bridge_info
;
506 netlink_extract_bridge_info(link_data
, &bridge_info
);
507 zebra_l2_bridge_add_update(ifp
, &bridge_info
, add
);
508 } else if (IS_ZEBRA_IF_VLAN(ifp
)) {
509 struct zebra_l2info_vlan vlan_info
;
511 netlink_extract_vlan_info(link_data
, &vlan_info
);
512 zebra_l2_vlanif_update(ifp
, &vlan_info
);
513 } else if (IS_ZEBRA_IF_VXLAN(ifp
)) {
514 struct zebra_l2info_vxlan vxlan_info
;
516 netlink_extract_vxlan_info(link_data
, &vxlan_info
);
517 zebra_l2_vxlanif_add_update(ifp
, &vxlan_info
, add
);
521 static int netlink_bridge_interface(struct nlmsghdr
*h
, int len
, ns_id_t ns_id
,
525 struct ifinfomsg
*ifi
;
526 struct rtattr
*tb
[IFLA_MAX
+ 1];
527 struct interface
*ifp
;
528 struct rtattr
*aftb
[IFLA_BRIDGE_MAX
+ 1];
533 vlanid_t access_vlan
;
535 /* Fetch name and ifindex */
537 memset(tb
, 0, sizeof tb
);
538 netlink_parse_rtattr(tb
, IFLA_MAX
, IFLA_RTA(ifi
), len
);
540 if (tb
[IFLA_IFNAME
] == NULL
)
542 name
= (char *)RTA_DATA(tb
[IFLA_IFNAME
]);
544 /* The interface should already be known, if not discard. */
545 ifp
= if_lookup_by_index_per_ns(zebra_ns_lookup(ns_id
), ifi
->ifi_index
);
547 zlog_debug("Cannot find bridge IF %s(%u)", name
,
551 if (!IS_ZEBRA_IF_VXLAN(ifp
))
554 /* We are only interested in the access VLAN i.e., AF_SPEC */
555 if (!tb
[IFLA_AF_SPEC
])
558 /* There is a 1-to-1 mapping of VLAN to VxLAN - hence
559 * only 1 access VLAN is accepted.
561 memset(aftb
, 0, sizeof aftb
);
562 parse_rtattr_nested(aftb
, IFLA_BRIDGE_MAX
, tb
[IFLA_AF_SPEC
]);
563 if (!aftb
[IFLA_BRIDGE_VLAN_INFO
])
566 vinfo
= RTA_DATA(aftb
[IFLA_BRIDGE_VLAN_INFO
]);
567 if (!(vinfo
->flags
& BRIDGE_VLAN_INFO_PVID
))
570 access_vlan
= (vlanid_t
)vinfo
->vid
;
571 if (IS_ZEBRA_DEBUG_KERNEL
)
572 zlog_debug("Access VLAN %u for VxLAN IF %s(%u)", access_vlan
,
573 name
, ifi
->ifi_index
);
574 zebra_l2_vxlanif_update_access_vlan(ifp
, access_vlan
);
579 * Called from interface_lookup_netlink(). This function is only used
582 static int netlink_interface(struct nlmsghdr
*h
, ns_id_t ns_id
, int startup
)
585 struct ifinfomsg
*ifi
;
586 struct rtattr
*tb
[IFLA_MAX
+ 1];
587 struct rtattr
*linkinfo
[IFLA_MAX
+ 1];
588 struct interface
*ifp
;
592 char *slave_kind
= NULL
;
593 struct zebra_ns
*zns
;
594 vrf_id_t vrf_id
= VRF_DEFAULT
;
595 zebra_iftype_t zif_type
= ZEBRA_IF_OTHER
;
596 zebra_slave_iftype_t zif_slave_type
= ZEBRA_IF_SLAVE_NONE
;
597 ifindex_t bridge_ifindex
= IFINDEX_INTERNAL
;
598 ifindex_t link_ifindex
= IFINDEX_INTERNAL
;
599 ifindex_t bond_ifindex
= IFINDEX_INTERNAL
;
600 struct zebra_if
*zif
;
603 zns
= zebra_ns_lookup(ns_id
);
606 if (h
->nlmsg_type
!= RTM_NEWLINK
)
609 len
= h
->nlmsg_len
- NLMSG_LENGTH(sizeof(struct ifinfomsg
));
611 zlog_err("%s: Message received from netlink is of a broken size: %d %zu",
614 (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg
)));
618 /* We are interested in some AF_BRIDGE notifications. */
619 if (ifi
->ifi_family
== AF_BRIDGE
)
620 return netlink_bridge_interface(h
, len
, ns_id
, startup
);
622 /* Looking up interface name. */
623 memset(tb
, 0, sizeof tb
);
624 memset(linkinfo
, 0, sizeof linkinfo
);
625 netlink_parse_rtattr(tb
, IFLA_MAX
, IFLA_RTA(ifi
), len
);
627 /* check for wireless messages to ignore */
628 if ((tb
[IFLA_WIRELESS
] != NULL
) && (ifi
->ifi_change
== 0)) {
629 if (IS_ZEBRA_DEBUG_KERNEL
)
630 zlog_debug("%s: ignoring IFLA_WIRELESS message",
635 if (tb
[IFLA_IFNAME
] == NULL
)
637 name
= (char *)RTA_DATA(tb
[IFLA_IFNAME
]);
639 if (tb
[IFLA_IFALIAS
])
640 desc
= (char *)RTA_DATA(tb
[IFLA_IFALIAS
]);
642 if (tb
[IFLA_LINKINFO
]) {
643 parse_rtattr_nested(linkinfo
, IFLA_INFO_MAX
, tb
[IFLA_LINKINFO
]);
645 if (linkinfo
[IFLA_INFO_KIND
])
646 kind
= RTA_DATA(linkinfo
[IFLA_INFO_KIND
]);
648 if (linkinfo
[IFLA_INFO_SLAVE_KIND
])
649 slave_kind
= RTA_DATA(linkinfo
[IFLA_INFO_SLAVE_KIND
]);
651 if ((slave_kind
!= NULL
) && strcmp(slave_kind
, "bond") == 0)
652 netlink_determine_zebra_iftype("bond_slave", &zif_type
);
654 netlink_determine_zebra_iftype(kind
, &zif_type
);
657 /* If VRF, create the VRF structure itself. */
658 if (zif_type
== ZEBRA_IF_VRF
&& !vrf_is_backend_netns()) {
659 netlink_vrf_change(h
, tb
[IFLA_LINKINFO
], name
);
660 vrf_id
= (vrf_id_t
)ifi
->ifi_index
;
663 if (tb
[IFLA_MASTER
]) {
664 if (slave_kind
&& (strcmp(slave_kind
, "vrf") == 0)
665 && !vrf_is_backend_netns()) {
666 zif_slave_type
= ZEBRA_IF_SLAVE_VRF
;
667 vrf_id
= *(uint32_t *)RTA_DATA(tb
[IFLA_MASTER
]);
668 /* vrf can be needed before vrf netlink discovery */
669 vrf_get(vrf_id
, NULL
);
670 } else if (slave_kind
&& (strcmp(slave_kind
, "bridge") == 0)) {
671 zif_slave_type
= ZEBRA_IF_SLAVE_BRIDGE
;
673 *(ifindex_t
*)RTA_DATA(tb
[IFLA_MASTER
]);
674 } else if (slave_kind
&& (strcmp(slave_kind
, "bond") == 0)) {
675 zif_slave_type
= ZEBRA_IF_SLAVE_BOND
;
676 bond_ifindex
= *(ifindex_t
*)RTA_DATA(tb
[IFLA_MASTER
]);
678 zif_slave_type
= ZEBRA_IF_SLAVE_OTHER
;
680 if (vrf_is_backend_netns())
681 vrf_id
= (vrf_id_t
)ns_id
;
682 vrf
= vrf_lookup_by_id(vrf_id
);
683 /* If linking to another interface, note it. */
685 link_ifindex
= *(ifindex_t
*)RTA_DATA(tb
[IFLA_LINK
]);
688 ifp
= if_get_by_name(name
, vrf
);
689 set_ifindex(ifp
, ifi
->ifi_index
, zns
);
690 ifp
->flags
= ifi
->ifi_flags
& 0x0000fffff;
691 ifp
->mtu6
= ifp
->mtu
= *(uint32_t *)RTA_DATA(tb
[IFLA_MTU
]);
693 ifp
->speed
= get_iflink_speed(ifp
);
694 ifp
->ptm_status
= ZEBRA_PTM_STATUS_UNKNOWN
;
696 /* Set zebra interface type */
697 zebra_if_set_ziftype(ifp
, zif_type
, zif_slave_type
);
698 if (IS_ZEBRA_IF_VRF(ifp
))
699 SET_FLAG(ifp
->status
, ZEBRA_INTERFACE_VRF_LOOPBACK
);
702 * Just set the @link/lower-device ifindex. During nldump interfaces are
703 * not ordered in any fashion so we may end up getting upper devices
704 * before lower devices. We will setup the real linkage once the dump
707 zif
= (struct zebra_if
*)ifp
->info
;
708 zif
->link_ifindex
= link_ifindex
;
711 XFREE(MTYPE_TMP
, zif
->desc
);
712 zif
->desc
= XSTRDUP(MTYPE_TMP
, desc
);
715 /* Hardware type and address. */
716 ifp
->ll_type
= netlink_to_zebra_link_type(ifi
->ifi_type
);
717 netlink_interface_update_hw_addr(tb
, ifp
);
721 /* Extract and save L2 interface information, take additional actions.
723 netlink_interface_update_l2info(ifp
, linkinfo
[IFLA_INFO_DATA
], 1);
724 if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp
))
725 zebra_l2if_update_bridge_slave(ifp
, bridge_ifindex
);
726 else if (IS_ZEBRA_IF_BOND_SLAVE(ifp
))
727 zebra_l2if_update_bond_slave(ifp
, bond_ifindex
);
732 /* Request for specific interface or address information from the kernel */
733 static int netlink_request_intf_addr(struct nlsock
*netlink_cmd
, int family
,
734 int type
, uint32_t filter_mask
)
738 struct ifinfomsg ifm
;
742 /* Form the request, specifying filter (rtattr) if needed. */
743 memset(&req
, 0, sizeof(req
));
744 req
.n
.nlmsg_type
= type
;
745 req
.n
.nlmsg_flags
= NLM_F_ROOT
| NLM_F_MATCH
| NLM_F_REQUEST
;
746 req
.n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ifinfomsg
));
747 req
.ifm
.ifi_family
= family
;
749 /* Include filter, if specified. */
751 addattr32(&req
.n
, sizeof(req
), IFLA_EXT_MASK
, filter_mask
);
753 return netlink_request(netlink_cmd
, &req
.n
);
756 /* Interface lookup by netlink socket. */
757 int interface_lookup_netlink(struct zebra_ns
*zns
)
760 struct zebra_dplane_info dp_info
;
761 struct nlsock
*netlink_cmd
= &zns
->netlink_cmd
;
763 /* Capture key info from ns struct */
764 zebra_dplane_info_from_zns(&dp_info
, zns
, true /*is_cmd*/);
766 /* Get interface information. */
767 ret
= netlink_request_intf_addr(netlink_cmd
, AF_PACKET
, RTM_GETLINK
, 0);
770 ret
= netlink_parse_info(netlink_interface
, netlink_cmd
, &dp_info
, 0,
775 /* Get interface information - for bridge interfaces. */
776 ret
= netlink_request_intf_addr(netlink_cmd
, AF_BRIDGE
, RTM_GETLINK
,
777 RTEXT_FILTER_BRVLAN
);
780 ret
= netlink_parse_info(netlink_interface
, netlink_cmd
, &dp_info
, 0,
785 /* Get interface information - for bridge interfaces. */
786 ret
= netlink_request_intf_addr(netlink_cmd
, AF_BRIDGE
, RTM_GETLINK
,
787 RTEXT_FILTER_BRVLAN
);
790 ret
= netlink_parse_info(netlink_interface
, netlink_cmd
, &dp_info
, 0,
796 zebra_if_update_all_links();
798 /* Get IPv4 address of the interfaces. */
799 ret
= netlink_request_intf_addr(netlink_cmd
, AF_INET
, RTM_GETADDR
, 0);
802 ret
= netlink_parse_info(netlink_interface_addr
, netlink_cmd
, &dp_info
,
807 /* Get IPv6 address of the interfaces. */
808 ret
= netlink_request_intf_addr(netlink_cmd
, AF_INET6
, RTM_GETADDR
, 0);
811 ret
= netlink_parse_info(netlink_interface_addr
, netlink_cmd
, &dp_info
,
819 int kernel_interface_set_master(struct interface
*master
,
820 struct interface
*slave
)
822 struct zebra_ns
*zns
= zebra_ns_lookup(NS_DEFAULT
);
826 struct ifinfomsg ifa
;
827 char buf
[NL_PKT_BUF_SIZE
];
830 memset(&req
, 0, sizeof req
);
832 req
.n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ifinfomsg
));
833 req
.n
.nlmsg_flags
= NLM_F_REQUEST
;
834 req
.n
.nlmsg_type
= RTM_SETLINK
;
835 req
.n
.nlmsg_pid
= zns
->netlink_cmd
.snl
.nl_pid
;
837 req
.ifa
.ifi_index
= slave
->ifindex
;
839 addattr_l(&req
.n
, sizeof req
, IFLA_MASTER
, &master
->ifindex
, 4);
840 addattr_l(&req
.n
, sizeof req
, IFLA_LINK
, &slave
->ifindex
, 4);
842 return netlink_talk(netlink_talk_filter
, &req
.n
, &zns
->netlink_cmd
, zns
,
846 /* Interface address modification. */
847 static int netlink_address_ctx(const struct zebra_dplane_ctx
*ctx
)
850 const struct prefix
*p
;
856 struct ifaddrmsg ifa
;
857 char buf
[NL_PKT_BUF_SIZE
];
860 p
= dplane_ctx_get_intf_addr(ctx
);
861 memset(&req
, 0, sizeof(req
) - NL_PKT_BUF_SIZE
);
863 bytelen
= (p
->family
== AF_INET
? 4 : 16);
865 req
.n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ifaddrmsg
));
866 req
.n
.nlmsg_flags
= NLM_F_REQUEST
;
868 if (dplane_ctx_get_op(ctx
) == DPLANE_OP_ADDR_INSTALL
)
873 req
.n
.nlmsg_type
= cmd
;
874 req
.ifa
.ifa_family
= p
->family
;
876 req
.ifa
.ifa_index
= dplane_ctx_get_ifindex(ctx
);
878 addattr_l(&req
.n
, sizeof(req
), IFA_LOCAL
, &p
->u
.prefix
, bytelen
);
880 if (p
->family
== AF_INET
) {
881 if (dplane_ctx_intf_is_connected(ctx
)) {
882 p
= dplane_ctx_get_intf_dest(ctx
);
883 addattr_l(&req
.n
, sizeof(req
), IFA_ADDRESS
,
884 &p
->u
.prefix
, bytelen
);
885 } else if (cmd
== RTM_NEWADDR
&&
886 dplane_ctx_intf_has_dest(ctx
)) {
887 p
= dplane_ctx_get_intf_dest(ctx
);
888 addattr_l(&req
.n
, sizeof(req
), IFA_BROADCAST
,
889 &p
->u
.prefix
, bytelen
);
893 /* p is now either address or destination/bcast addr */
894 req
.ifa
.ifa_prefixlen
= p
->prefixlen
;
896 if (dplane_ctx_intf_is_secondary(ctx
))
897 SET_FLAG(req
.ifa
.ifa_flags
, IFA_F_SECONDARY
);
899 if (dplane_ctx_intf_has_label(ctx
)) {
900 label
= dplane_ctx_get_intf_label(ctx
);
901 addattr_l(&req
.n
, sizeof(req
), IFA_LABEL
, label
,
905 return netlink_talk_info(netlink_talk_filter
, &req
.n
,
906 dplane_ctx_get_ns(ctx
), 0);
909 enum zebra_dplane_result
kernel_address_update_ctx(struct zebra_dplane_ctx
*ctx
)
911 return (netlink_address_ctx(ctx
) == 0 ?
912 ZEBRA_DPLANE_REQUEST_SUCCESS
: ZEBRA_DPLANE_REQUEST_FAILURE
);
915 int netlink_interface_addr(struct nlmsghdr
*h
, ns_id_t ns_id
, int startup
)
918 struct ifaddrmsg
*ifa
;
919 struct rtattr
*tb
[IFA_MAX
+ 1];
920 struct interface
*ifp
;
925 struct zebra_ns
*zns
;
926 uint32_t metric
= METRIC_MAX
;
927 uint32_t kernel_flags
= 0;
929 zns
= zebra_ns_lookup(ns_id
);
932 if (ifa
->ifa_family
!= AF_INET
&& ifa
->ifa_family
!= AF_INET6
) {
934 EC_ZEBRA_UNKNOWN_FAMILY
,
935 "Invalid address family: %u received from kernel interface addr change: %s",
936 ifa
->ifa_family
, nl_msg_type_to_str(h
->nlmsg_type
));
940 if (h
->nlmsg_type
!= RTM_NEWADDR
&& h
->nlmsg_type
!= RTM_DELADDR
)
943 len
= h
->nlmsg_len
- NLMSG_LENGTH(sizeof(struct ifaddrmsg
));
945 zlog_err("%s: Message received from netlink is of a broken size: %d %zu",
948 (size_t)NLMSG_LENGTH(sizeof(struct ifaddrmsg
)));
952 memset(tb
, 0, sizeof tb
);
953 netlink_parse_rtattr(tb
, IFA_MAX
, IFA_RTA(ifa
), len
);
955 ifp
= if_lookup_by_index_per_ns(zns
, ifa
->ifa_index
);
959 "netlink_interface_addr can't find interface by index %d",
964 /* Flags passed through */
966 kernel_flags
= *(int *)RTA_DATA(tb
[IFA_FLAGS
]);
968 kernel_flags
= ifa
->ifa_flags
;
970 if (IS_ZEBRA_DEBUG_KERNEL
) /* remove this line to see initial ifcfg */
973 zlog_debug("netlink_interface_addr %s %s flags 0x%x:",
974 nl_msg_type_to_str(h
->nlmsg_type
), ifp
->name
,
977 zlog_debug(" IFA_LOCAL %s/%d",
978 inet_ntop(ifa
->ifa_family
,
979 RTA_DATA(tb
[IFA_LOCAL
]), buf
,
983 zlog_debug(" IFA_ADDRESS %s/%d",
984 inet_ntop(ifa
->ifa_family
,
985 RTA_DATA(tb
[IFA_ADDRESS
]), buf
,
988 if (tb
[IFA_BROADCAST
])
989 zlog_debug(" IFA_BROADCAST %s/%d",
990 inet_ntop(ifa
->ifa_family
,
991 RTA_DATA(tb
[IFA_BROADCAST
]), buf
,
994 if (tb
[IFA_LABEL
] && strcmp(ifp
->name
, RTA_DATA(tb
[IFA_LABEL
])))
995 zlog_debug(" IFA_LABEL %s",
996 (char *)RTA_DATA(tb
[IFA_LABEL
]));
998 if (tb
[IFA_CACHEINFO
]) {
999 struct ifa_cacheinfo
*ci
= RTA_DATA(tb
[IFA_CACHEINFO
]);
1000 zlog_debug(" IFA_CACHEINFO pref %d, valid %d",
1001 ci
->ifa_prefered
, ci
->ifa_valid
);
1005 /* logic copied from iproute2/ip/ipaddress.c:print_addrinfo() */
1006 if (tb
[IFA_LOCAL
] == NULL
)
1007 tb
[IFA_LOCAL
] = tb
[IFA_ADDRESS
];
1008 if (tb
[IFA_ADDRESS
] == NULL
)
1009 tb
[IFA_ADDRESS
] = tb
[IFA_LOCAL
];
1011 /* local interface address */
1012 addr
= (tb
[IFA_LOCAL
] ? RTA_DATA(tb
[IFA_LOCAL
]) : NULL
);
1014 /* is there a peer address? */
1016 && memcmp(RTA_DATA(tb
[IFA_ADDRESS
]), RTA_DATA(tb
[IFA_LOCAL
]),
1017 RTA_PAYLOAD(tb
[IFA_ADDRESS
]))) {
1018 broad
= RTA_DATA(tb
[IFA_ADDRESS
]);
1019 SET_FLAG(flags
, ZEBRA_IFA_PEER
);
1021 /* seeking a broadcast address */
1022 broad
= (tb
[IFA_BROADCAST
] ? RTA_DATA(tb
[IFA_BROADCAST
])
1025 /* addr is primary key, SOL if we don't have one */
1027 zlog_debug("%s: NULL address", __func__
);
1032 if (kernel_flags
& IFA_F_SECONDARY
)
1033 SET_FLAG(flags
, ZEBRA_IFA_SECONDARY
);
1037 label
= (char *)RTA_DATA(tb
[IFA_LABEL
]);
1039 if (label
&& strcmp(ifp
->name
, label
) == 0)
1042 if (tb
[IFA_RT_PRIORITY
])
1043 metric
= *(uint32_t *)RTA_DATA(tb
[IFA_RT_PRIORITY
]);
1045 /* Register interface address to the interface. */
1046 if (ifa
->ifa_family
== AF_INET
) {
1047 if (ifa
->ifa_prefixlen
> IPV4_MAX_BITLEN
) {
1049 "Invalid prefix length: %u received from kernel interface addr change: %s",
1051 nl_msg_type_to_str(h
->nlmsg_type
));
1054 if (h
->nlmsg_type
== RTM_NEWADDR
)
1055 connected_add_ipv4(ifp
, flags
, (struct in_addr
*)addr
,
1057 (struct in_addr
*)broad
, label
,
1060 connected_delete_ipv4(
1061 ifp
, flags
, (struct in_addr
*)addr
,
1062 ifa
->ifa_prefixlen
, (struct in_addr
*)broad
);
1064 if (ifa
->ifa_family
== AF_INET6
) {
1065 if (ifa
->ifa_prefixlen
> IPV6_MAX_BITLEN
) {
1067 "Invalid prefix length: %u received from kernel interface addr change: %s",
1069 nl_msg_type_to_str(h
->nlmsg_type
));
1072 if (h
->nlmsg_type
== RTM_NEWADDR
) {
1073 /* Only consider valid addresses; we'll not get a
1075 * the kernel till IPv6 DAD has completed, but at init
1077 * does query for and will receive all addresses.
1080 & (IFA_F_DADFAILED
| IFA_F_TENTATIVE
)))
1081 connected_add_ipv6(ifp
, flags
,
1082 (struct in6_addr
*)addr
,
1083 (struct in6_addr
*)broad
,
1084 ifa
->ifa_prefixlen
, label
,
1087 connected_delete_ipv6(ifp
, (struct in6_addr
*)addr
,
1088 (struct in6_addr
*)broad
,
1089 ifa
->ifa_prefixlen
);
1095 int netlink_link_change(struct nlmsghdr
*h
, ns_id_t ns_id
, int startup
)
1098 struct ifinfomsg
*ifi
;
1099 struct rtattr
*tb
[IFLA_MAX
+ 1];
1100 struct rtattr
*linkinfo
[IFLA_MAX
+ 1];
1101 struct interface
*ifp
;
1105 char *slave_kind
= NULL
;
1106 struct zebra_ns
*zns
;
1107 vrf_id_t vrf_id
= VRF_DEFAULT
;
1108 zebra_iftype_t zif_type
= ZEBRA_IF_OTHER
;
1109 zebra_slave_iftype_t zif_slave_type
= ZEBRA_IF_SLAVE_NONE
;
1110 ifindex_t bridge_ifindex
= IFINDEX_INTERNAL
;
1111 ifindex_t bond_ifindex
= IFINDEX_INTERNAL
;
1112 ifindex_t link_ifindex
= IFINDEX_INTERNAL
;
1113 uint8_t old_hw_addr
[INTERFACE_HWADDR_MAX
];
1114 struct zebra_if
*zif
;
1117 zns
= zebra_ns_lookup(ns_id
);
1118 ifi
= NLMSG_DATA(h
);
1120 /* assume if not default zns, then new VRF */
1121 if (!(h
->nlmsg_type
== RTM_NEWLINK
|| h
->nlmsg_type
== RTM_DELLINK
)) {
1122 /* If this is not link add/delete message so print warning. */
1123 zlog_debug("netlink_link_change: wrong kernel message %s",
1124 nl_msg_type_to_str(h
->nlmsg_type
));
1128 if (!(ifi
->ifi_family
== AF_UNSPEC
|| ifi
->ifi_family
== AF_BRIDGE
1129 || ifi
->ifi_family
== AF_INET6
)) {
1131 EC_ZEBRA_UNKNOWN_FAMILY
,
1132 "Invalid address family: %u received from kernel link change: %s",
1133 ifi
->ifi_family
, nl_msg_type_to_str(h
->nlmsg_type
));
1137 len
= h
->nlmsg_len
- NLMSG_LENGTH(sizeof(struct ifinfomsg
));
1139 zlog_err("%s: Message received from netlink is of a broken size %d %zu",
1140 __PRETTY_FUNCTION__
, h
->nlmsg_len
,
1141 (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg
)));
1145 /* We are interested in some AF_BRIDGE notifications. */
1146 if (ifi
->ifi_family
== AF_BRIDGE
)
1147 return netlink_bridge_interface(h
, len
, ns_id
, startup
);
1149 /* Looking up interface name. */
1150 memset(tb
, 0, sizeof tb
);
1151 memset(linkinfo
, 0, sizeof linkinfo
);
1152 netlink_parse_rtattr(tb
, IFLA_MAX
, IFLA_RTA(ifi
), len
);
1154 /* check for wireless messages to ignore */
1155 if ((tb
[IFLA_WIRELESS
] != NULL
) && (ifi
->ifi_change
== 0)) {
1156 if (IS_ZEBRA_DEBUG_KERNEL
)
1157 zlog_debug("%s: ignoring IFLA_WIRELESS message",
1162 if (tb
[IFLA_IFNAME
] == NULL
)
1164 name
= (char *)RTA_DATA(tb
[IFLA_IFNAME
]);
1166 if (tb
[IFLA_LINKINFO
]) {
1167 parse_rtattr_nested(linkinfo
, IFLA_INFO_MAX
, tb
[IFLA_LINKINFO
]);
1169 if (linkinfo
[IFLA_INFO_KIND
])
1170 kind
= RTA_DATA(linkinfo
[IFLA_INFO_KIND
]);
1172 if (linkinfo
[IFLA_INFO_SLAVE_KIND
])
1173 slave_kind
= RTA_DATA(linkinfo
[IFLA_INFO_SLAVE_KIND
]);
1175 netlink_determine_zebra_iftype(kind
, &zif_type
);
1178 /* If linking to another interface, note it. */
1180 link_ifindex
= *(ifindex_t
*)RTA_DATA(tb
[IFLA_LINK
]);
1182 if (tb
[IFLA_IFALIAS
]) {
1183 desc
= (char *)RTA_DATA(tb
[IFLA_IFALIAS
]);
1186 /* If VRF, create or update the VRF structure itself. */
1187 if (zif_type
== ZEBRA_IF_VRF
&& !vrf_is_backend_netns()) {
1188 netlink_vrf_change(h
, tb
[IFLA_LINKINFO
], name
);
1189 vrf_id
= (vrf_id_t
)ifi
->ifi_index
;
1192 /* See if interface is present. */
1193 ifp
= if_lookup_by_name_per_ns(zns
, name
);
1195 if (h
->nlmsg_type
== RTM_NEWLINK
) {
1196 if (tb
[IFLA_MASTER
]) {
1197 if (slave_kind
&& (strcmp(slave_kind
, "vrf") == 0)
1198 && !vrf_is_backend_netns()) {
1199 zif_slave_type
= ZEBRA_IF_SLAVE_VRF
;
1200 vrf_id
= *(uint32_t *)RTA_DATA(tb
[IFLA_MASTER
]);
1201 } else if (slave_kind
1202 && (strcmp(slave_kind
, "bridge") == 0)) {
1203 zif_slave_type
= ZEBRA_IF_SLAVE_BRIDGE
;
1205 *(ifindex_t
*)RTA_DATA(tb
[IFLA_MASTER
]);
1206 } else if (slave_kind
1207 && (strcmp(slave_kind
, "bond") == 0)) {
1208 zif_slave_type
= ZEBRA_IF_SLAVE_BOND
;
1210 *(ifindex_t
*)RTA_DATA(tb
[IFLA_MASTER
]);
1212 zif_slave_type
= ZEBRA_IF_SLAVE_OTHER
;
1214 if (vrf_is_backend_netns())
1215 vrf_id
= (vrf_id_t
)ns_id
;
1217 vrf
= vrf_lookup_by_id(vrf_id
);
1220 || !CHECK_FLAG(ifp
->status
, ZEBRA_INTERFACE_ACTIVE
)) {
1221 /* Add interface notification from kernel */
1222 if (IS_ZEBRA_DEBUG_KERNEL
)
1224 "RTM_NEWLINK ADD for %s(%u) vrf_id %u type %d "
1225 "sl_type %d master %u flags 0x%x",
1226 name
, ifi
->ifi_index
, vrf_id
, zif_type
,
1227 zif_slave_type
, bridge_ifindex
,
1231 /* unknown interface */
1232 ifp
= if_get_by_name(name
, vrf
);
1234 /* pre-configured interface, learnt now */
1235 if (ifp
->vrf
!= vrf
)
1236 if_update_to_new_vrf(ifp
, vrf
);
1239 /* Update interface information. */
1240 set_ifindex(ifp
, ifi
->ifi_index
, zns
);
1241 ifp
->flags
= ifi
->ifi_flags
& 0x0000fffff;
1242 if (!tb
[IFLA_MTU
]) {
1244 "RTM_NEWLINK for interface %s(%u) without MTU set",
1245 name
, ifi
->ifi_index
);
1248 ifp
->mtu6
= ifp
->mtu
= *(int *)RTA_DATA(tb
[IFLA_MTU
]);
1250 ifp
->ptm_status
= ZEBRA_PTM_STATUS_UNKNOWN
;
1252 /* Set interface type */
1253 zebra_if_set_ziftype(ifp
, zif_type
, zif_slave_type
);
1254 if (IS_ZEBRA_IF_VRF(ifp
))
1255 SET_FLAG(ifp
->status
,
1256 ZEBRA_INTERFACE_VRF_LOOPBACK
);
1259 zebra_if_update_link(ifp
, link_ifindex
, ns_id
);
1261 netlink_interface_update_hw_addr(tb
, ifp
);
1263 /* Inform clients, install any configured addresses. */
1266 /* Extract and save L2 interface information, take
1267 * additional actions. */
1268 netlink_interface_update_l2info(
1269 ifp
, linkinfo
[IFLA_INFO_DATA
], 1);
1270 if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp
))
1271 zebra_l2if_update_bridge_slave(ifp
,
1273 else if (IS_ZEBRA_IF_BOND_SLAVE(ifp
))
1274 zebra_l2if_update_bond_slave(ifp
, bond_ifindex
);
1275 } else if (ifp
->vrf
!= vrf
) {
1276 /* VRF change for an interface. */
1277 if (IS_ZEBRA_DEBUG_KERNEL
)
1279 "RTM_NEWLINK vrf-change for %s(%u) "
1280 "vrf_id %u -> %u flags 0x%x",
1281 name
, ifp
->ifindex
, vrf_to_id(ifp
->vrf
),
1282 vrf_id
, ifi
->ifi_flags
);
1284 if_handle_vrf_change(ifp
, vrf
->vrf_id
);
1286 bool was_bridge_slave
, was_bond_slave
;
1288 /* Interface update. */
1289 if (IS_ZEBRA_DEBUG_KERNEL
)
1291 "RTM_NEWLINK update for %s(%u) "
1292 "sl_type %d master %u flags 0x%x",
1293 name
, ifp
->ifindex
, zif_slave_type
,
1294 bridge_ifindex
, ifi
->ifi_flags
);
1296 set_ifindex(ifp
, ifi
->ifi_index
, zns
);
1297 if (!tb
[IFLA_MTU
]) {
1299 "RTM_NEWLINK for interface %s(%u) without MTU set",
1300 name
, ifi
->ifi_index
);
1303 ifp
->mtu6
= ifp
->mtu
= *(int *)RTA_DATA(tb
[IFLA_MTU
]);
1306 /* Update interface type - NOTE: Only slave_type can
1308 was_bridge_slave
= IS_ZEBRA_IF_BRIDGE_SLAVE(ifp
);
1309 was_bond_slave
= IS_ZEBRA_IF_BOND_SLAVE(ifp
);
1310 zebra_if_set_ziftype(ifp
, zif_type
, zif_slave_type
);
1312 memcpy(old_hw_addr
, ifp
->hw_addr
, INTERFACE_HWADDR_MAX
);
1314 netlink_interface_update_hw_addr(tb
, ifp
);
1316 if (if_is_no_ptm_operative(ifp
)) {
1317 ifp
->flags
= ifi
->ifi_flags
& 0x0000fffff;
1318 if (!if_is_no_ptm_operative(ifp
)) {
1319 if (IS_ZEBRA_DEBUG_KERNEL
)
1321 "Intf %s(%u) has gone DOWN",
1322 name
, ifp
->ifindex
);
1324 } else if (if_is_operative(ifp
)) {
1325 /* Must notify client daemons of new
1326 * interface status. */
1327 if (IS_ZEBRA_DEBUG_KERNEL
)
1329 "Intf %s(%u) PTM up, notifying clients",
1330 name
, ifp
->ifindex
);
1331 zebra_interface_up_update(ifp
);
1333 /* Update EVPN VNI when SVI MAC change
1335 if (IS_ZEBRA_IF_VLAN(ifp
) &&
1336 memcmp(old_hw_addr
, ifp
->hw_addr
,
1337 INTERFACE_HWADDR_MAX
)) {
1338 struct interface
*link_if
;
1341 if_lookup_by_index_per_ns(
1342 zebra_ns_lookup(NS_DEFAULT
),
1345 zebra_vxlan_svi_up(ifp
,
1350 ifp
->flags
= ifi
->ifi_flags
& 0x0000fffff;
1351 if (if_is_operative(ifp
)) {
1352 if (IS_ZEBRA_DEBUG_KERNEL
)
1354 "Intf %s(%u) has come UP",
1355 name
, ifp
->ifindex
);
1360 /* Extract and save L2 interface information, take
1361 * additional actions. */
1362 netlink_interface_update_l2info(
1363 ifp
, linkinfo
[IFLA_INFO_DATA
], 0);
1364 if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp
) || was_bridge_slave
)
1365 zebra_l2if_update_bridge_slave(ifp
,
1367 else if (IS_ZEBRA_IF_BOND_SLAVE(ifp
) || was_bond_slave
)
1368 zebra_l2if_update_bond_slave(ifp
, bond_ifindex
);
1371 /* Delete interface notification from kernel */
1373 if (IS_ZEBRA_DEBUG_KERNEL
)
1375 "RTM_DELLINK for unknown interface %s(%u)",
1376 name
, ifi
->ifi_index
);
1380 if (IS_ZEBRA_DEBUG_KERNEL
)
1381 zlog_debug("RTM_DELLINK for %s(%u)", name
,
1384 UNSET_FLAG(ifp
->status
, ZEBRA_INTERFACE_VRF_LOOPBACK
);
1386 /* Special handling for bridge or VxLAN interfaces. */
1387 if (IS_ZEBRA_IF_BRIDGE(ifp
))
1388 zebra_l2_bridge_del(ifp
);
1389 else if (IS_ZEBRA_IF_VXLAN(ifp
))
1390 zebra_l2_vxlanif_del(ifp
);
1392 if (!IS_ZEBRA_IF_VRF(ifp
))
1393 if_delete_update(ifp
);
1398 XFREE(MTYPE_TMP
, zif
->desc
);
1400 zif
->desc
= XSTRDUP(MTYPE_TMP
, desc
);
1406 int netlink_protodown(struct interface
*ifp
, bool down
)
1408 struct zebra_ns
*zns
= zebra_ns_lookup(NS_DEFAULT
);
1412 struct ifinfomsg ifa
;
1413 char buf
[NL_PKT_BUF_SIZE
];
1416 memset(&req
, 0, sizeof(req
));
1418 req
.n
.nlmsg_len
= NLMSG_LENGTH(sizeof(struct ifinfomsg
));
1419 req
.n
.nlmsg_flags
= NLM_F_REQUEST
;
1420 req
.n
.nlmsg_type
= RTM_SETLINK
;
1421 req
.n
.nlmsg_pid
= zns
->netlink_cmd
.snl
.nl_pid
;
1423 req
.ifa
.ifi_index
= ifp
->ifindex
;
1425 addattr_l(&req
.n
, sizeof(req
), IFLA_PROTO_DOWN
, &down
, 4);
1426 addattr_l(&req
.n
, sizeof(req
), IFLA_LINK
, &ifp
->ifindex
, 4);
1428 return netlink_talk(netlink_talk_filter
, &req
.n
, &zns
->netlink_cmd
, zns
,
1432 /* Interface information read by netlink. */
1433 void interface_list(struct zebra_ns
*zns
)
1435 interface_lookup_netlink(zns
);
1438 #endif /* GNU_LINUX */