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718e3744 1/*
2 * Interface looking up by netlink.
3 * Copyright (C) 1998 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 *
896014f4
DL		 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
718e3744 20 */
21
22#include <zebra.h>
6675513d 23
ddfeb486
DL		 24#ifdef GNU_LINUX
25
6675513d 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
30 */
31#define _LINUX_IN6_H
32
33#include <linux/if_bridge.h>
1fdc9eae 34#include <net/if_arp.h>
535fe877
DS		 35#include <linux/sockios.h>
36#include <linux/ethtool.h>
1fdc9eae 37
38#include "linklist.h"
39#include "if.h"
40#include "log.h"
41#include "prefix.h"
42#include "connected.h"
43#include "table.h"
44#include "memory.h"
45#include "zebra_memory.h"
46#include "rib.h"
47#include "thread.h"
48#include "privs.h"
49#include "nexthop.h"
50#include "vrf.h"
7922fc65 51#include "vrf_int.h"
1fdc9eae 52#include "mpls.h"
718e3744 53
5e6a74d8 54#include "vty.h"
7dbeea9d 55#include "zebra/zserv.h"
1fdc9eae 56#include "zebra/zebra_ns.h"
57#include "zebra/zebra_vrf.h"
58#include "zebra/rt.h"
59#include "zebra/redistribute.h"
60#include "zebra/interface.h"
61#include "zebra/debug.h"
62#include "zebra/rtadv.h"
63#include "zebra/zebra_ptm.h"
64#include "zebra/zebra_mpls.h"
65#include "zebra/kernel_netlink.h"
66#include "zebra/if_netlink.h"
67
68
69/* Note: on netlink systems, there should be a 1-to-1 mapping between interface
70 names and ifindex values. */
d62a17ae 71static void set_ifindex(struct interface *ifp, ifindex_t ifi_index,
72 struct zebra_ns *zns)
1fdc9eae 73{
d62a17ae 74 struct interface *oifp;
75
76 if (((oifp = if_lookup_by_index_per_ns(zns, ifi_index)) != NULL)
77 && (oifp != ifp)) {
78 if (ifi_index == IFINDEX_INTERNAL)
79 zlog_err(
80 "Netlink is setting interface %s ifindex to reserved "
81 "internal value %u",
82 ifp->name, ifi_index);
83 else {
84 if (IS_ZEBRA_DEBUG_KERNEL)
85 zlog_debug(
86 "interface index %d was renamed from %s to %s",
87 ifi_index, oifp->name, ifp->name);
88 if (if_is_up(oifp))
89 zlog_err(
90 "interface rename detected on up interface: index %d "
91 "was renamed from %s to %s, results are uncertain!",
92 ifi_index, oifp->name, ifp->name);
93 if_delete_update(oifp);
94 }
95 }
96 ifp->ifindex = ifi_index;
1fdc9eae 97}
98
99/* Utility function to parse hardware link-layer address and update ifp */
d62a17ae 100static void netlink_interface_update_hw_addr(struct rtattr **tb,
101 struct interface *ifp)
1fdc9eae 102{
d62a17ae 103 int i;
104
105 if (tb[IFLA_ADDRESS]) {
106 int hw_addr_len;
107
108 hw_addr_len = RTA_PAYLOAD(tb[IFLA_ADDRESS]);
109
110 if (hw_addr_len > INTERFACE_HWADDR_MAX)
111 zlog_warn("Hardware address is too large: %d",
112 hw_addr_len);
113 else {
114 ifp->hw_addr_len = hw_addr_len;
115 memcpy(ifp->hw_addr, RTA_DATA(tb[IFLA_ADDRESS]),
116 hw_addr_len);
117
118 for (i = 0; i < hw_addr_len; i++)
119 if (ifp->hw_addr[i] != 0)
120 break;
121
122 if (i == hw_addr_len)
123 ifp->hw_addr_len = 0;
124 else
125 ifp->hw_addr_len = hw_addr_len;
126 }
127 }
1fdc9eae 128}
129
d62a17ae 130static enum zebra_link_type netlink_to_zebra_link_type(unsigned int hwt)
1fdc9eae 131{
d62a17ae 132 switch (hwt) {
133 case ARPHRD_ETHER:
134 return ZEBRA_LLT_ETHER;
135 case ARPHRD_EETHER:
136 return ZEBRA_LLT_EETHER;
137 case ARPHRD_AX25:
138 return ZEBRA_LLT_AX25;
139 case ARPHRD_PRONET:
140 return ZEBRA_LLT_PRONET;
141 case ARPHRD_IEEE802:
142 return ZEBRA_LLT_IEEE802;
143 case ARPHRD_ARCNET:
144 return ZEBRA_LLT_ARCNET;
145 case ARPHRD_APPLETLK:
146 return ZEBRA_LLT_APPLETLK;
147 case ARPHRD_DLCI:
148 return ZEBRA_LLT_DLCI;
149 case ARPHRD_ATM:
150 return ZEBRA_LLT_ATM;
151 case ARPHRD_METRICOM:
152 return ZEBRA_LLT_METRICOM;
153 case ARPHRD_IEEE1394:
154 return ZEBRA_LLT_IEEE1394;
155 case ARPHRD_EUI64:
156 return ZEBRA_LLT_EUI64;
157 case ARPHRD_INFINIBAND:
158 return ZEBRA_LLT_INFINIBAND;
159 case ARPHRD_SLIP:
160 return ZEBRA_LLT_SLIP;
161 case ARPHRD_CSLIP:
162 return ZEBRA_LLT_CSLIP;
163 case ARPHRD_SLIP6:
164 return ZEBRA_LLT_SLIP6;
165 case ARPHRD_CSLIP6:
166 return ZEBRA_LLT_CSLIP6;
167 case ARPHRD_RSRVD:
168 return ZEBRA_LLT_RSRVD;
169 case ARPHRD_ADAPT:
170 return ZEBRA_LLT_ADAPT;
171 case ARPHRD_ROSE:
172 return ZEBRA_LLT_ROSE;
173 case ARPHRD_X25:
174 return ZEBRA_LLT_X25;
175 case ARPHRD_PPP:
176 return ZEBRA_LLT_PPP;
177 case ARPHRD_CISCO:
178 return ZEBRA_LLT_CHDLC;
179 case ARPHRD_LAPB:
180 return ZEBRA_LLT_LAPB;
181 case ARPHRD_RAWHDLC:
182 return ZEBRA_LLT_RAWHDLC;
183 case ARPHRD_TUNNEL:
184 return ZEBRA_LLT_IPIP;
185 case ARPHRD_TUNNEL6:
186 return ZEBRA_LLT_IPIP6;
187 case ARPHRD_FRAD:
188 return ZEBRA_LLT_FRAD;
189 case ARPHRD_SKIP:
190 return ZEBRA_LLT_SKIP;
191 case ARPHRD_LOOPBACK:
192 return ZEBRA_LLT_LOOPBACK;
193 case ARPHRD_LOCALTLK:
194 return ZEBRA_LLT_LOCALTLK;
195 case ARPHRD_FDDI:
196 return ZEBRA_LLT_FDDI;
197 case ARPHRD_SIT:
198 return ZEBRA_LLT_SIT;
199 case ARPHRD_IPDDP:
200 return ZEBRA_LLT_IPDDP;
201 case ARPHRD_IPGRE:
202 return ZEBRA_LLT_IPGRE;
203 case ARPHRD_PIMREG:
204 return ZEBRA_LLT_PIMREG;
205 case ARPHRD_HIPPI:
206 return ZEBRA_LLT_HIPPI;
207 case ARPHRD_ECONET:
208 return ZEBRA_LLT_ECONET;
209 case ARPHRD_IRDA:
210 return ZEBRA_LLT_IRDA;
211 case ARPHRD_FCPP:
212 return ZEBRA_LLT_FCPP;
213 case ARPHRD_FCAL:
214 return ZEBRA_LLT_FCAL;
215 case ARPHRD_FCPL:
216 return ZEBRA_LLT_FCPL;
217 case ARPHRD_FCFABRIC:
218 return ZEBRA_LLT_FCFABRIC;
219 case ARPHRD_IEEE802_TR:
220 return ZEBRA_LLT_IEEE802_TR;
221 case ARPHRD_IEEE80211:
222 return ZEBRA_LLT_IEEE80211;
223 case ARPHRD_IEEE802154:
224 return ZEBRA_LLT_IEEE802154;
1fdc9eae 225#ifdef ARPHRD_IP6GRE
d62a17ae 226 case ARPHRD_IP6GRE:
227 return ZEBRA_LLT_IP6GRE;
1fdc9eae 228#endif
229#ifdef ARPHRD_IEEE802154_PHY
d62a17ae 230 case ARPHRD_IEEE802154_PHY:
231 return ZEBRA_LLT_IEEE802154_PHY;
1fdc9eae 232#endif
233
d62a17ae 234 default:
235 return ZEBRA_LLT_UNKNOWN;
236 }
1fdc9eae 237}
238
d62a17ae 239static void netlink_determine_zebra_iftype(char *kind, zebra_iftype_t *zif_type)
6675513d 240{
d62a17ae 241 *zif_type = ZEBRA_IF_OTHER;
242
243 if (!kind)
244 return;
245
246 if (strcmp(kind, "vrf") == 0)
247 *zif_type = ZEBRA_IF_VRF;
248 else if (strcmp(kind, "bridge") == 0)
249 *zif_type = ZEBRA_IF_BRIDGE;
250 else if (strcmp(kind, "vlan") == 0)
251 *zif_type = ZEBRA_IF_VLAN;
252 else if (strcmp(kind, "vxlan") == 0)
253 *zif_type = ZEBRA_IF_VXLAN;
6675513d 254}
52d8f0d8 255
d62a17ae 256// Temporary Assignments to compile on older platforms.
52d8f0d8
DS		 257#ifndef IFLA_BR_MAX
258#define IFLA_BR_MAX 39
259#endif
260
261#ifndef IFLA_VXLAN_ID
262#define IFLA_VXLAN_ID 1
263#endif
264
265#ifndef IFLA_VXLAN_LOCAL
266#define IFLA_VXLAN_LOCAL 4
267#endif
268
269#ifndef IFLA_VXLAN_MAX
270#define IFLA_VXLAN_MAX 26
271#endif
272
273#ifndef IFLA_BRIDGE_MAX
274#define IFLA_BRIDGE_MAX 2
275#endif
276
277#ifndef IFLA_BRIDGE_VLAN_INFO
278#define IFLA_BRIDGE_VLAN_INFO 2
279#endif
280
281#ifndef BRIDGE_VLAN_INFO_PVID
282#define BRIDGE_VLAN_INFO_PVID (1<<1)
283#endif
284
285#ifndef RTEXT_FILTER_BRVLAN
286#define RTEXT_FILTER_BRVLAN (1<<1)
287#endif
288
289#ifndef NTF_SELF
290#define NTF_SELF 0x02
291#endif
292
293#ifndef IFLA_BR_VLAN_FILTERING
294#define IFLA_BR_VLAN_FILTERING 7
295#endif
296
d62a17ae 297#define parse_rtattr_nested(tb, max, rta) \
298 netlink_parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta))
1fdc9eae 299
d62a17ae 300static void netlink_vrf_change(struct nlmsghdr *h, struct rtattr *tb,
301 const char *name)
1fdc9eae 302{
d62a17ae 303 struct ifinfomsg *ifi;
304 struct rtattr *linkinfo[IFLA_INFO_MAX + 1];
305 struct rtattr *attr[IFLA_VRF_MAX + 1];
306 struct vrf *vrf;
307 struct zebra_vrf *zvrf;
308 u_int32_t nl_table_id;
309
310 ifi = NLMSG_DATA(h);
311
312 memset(linkinfo, 0, sizeof linkinfo);
313 parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb);
314
315 if (!linkinfo[IFLA_INFO_DATA]) {
316 if (IS_ZEBRA_DEBUG_KERNEL)
317 zlog_debug(
318 "%s: IFLA_INFO_DATA missing from VRF message: %s",
319 __func__, name);
320 return;
321 }
322
323 memset(attr, 0, sizeof attr);
324 parse_rtattr_nested(attr, IFLA_VRF_MAX, linkinfo[IFLA_INFO_DATA]);
325 if (!attr[IFLA_VRF_TABLE]) {
326 if (IS_ZEBRA_DEBUG_KERNEL)
327 zlog_debug(
328 "%s: IFLA_VRF_TABLE missing from VRF message: %s",
329 __func__, name);
330 return;
1fdc9eae 331 }
332
d62a17ae 333 nl_table_id = *(u_int32_t *)RTA_DATA(attr[IFLA_VRF_TABLE]);
334
335 if (h->nlmsg_type == RTM_NEWLINK) {
336 if (IS_ZEBRA_DEBUG_KERNEL)
337 zlog_debug("RTM_NEWLINK for VRF %s(%u) table %u", name,
338 ifi->ifi_index, nl_table_id);
339
340 /*
341 * vrf_get is implied creation if it does not exist
342 */
343 vrf = vrf_get((vrf_id_t)ifi->ifi_index,
344 name); // It would create vrf
345 if (!vrf) {
346 zlog_err("VRF %s id %u not created", name,
347 ifi->ifi_index);
348 return;
349 }
350
351 /* Enable the created VRF. */
352 if (!vrf_enable(vrf)) {
353 zlog_err("Failed to enable VRF %s id %u", name,
354 ifi->ifi_index);
355 return;
356 }
357
358 /*
359 * This is the only place that we get the actual kernel table_id
360 * being used. We need it to set the table_id of the routes
361 * we are passing to the kernel.... And to throw some totally
362 * awesome parties. that too.
363 */
364 zvrf = (struct zebra_vrf *)vrf->info;
365 zvrf->table_id = nl_table_id;
366 } else // h->nlmsg_type == RTM_DELLINK
367 {
368 if (IS_ZEBRA_DEBUG_KERNEL)
369 zlog_debug("RTM_DELLINK for VRF %s(%u)", name,
370 ifi->ifi_index);
371
372 vrf = vrf_lookup_by_id((vrf_id_t)ifi->ifi_index);
373
374 if (!vrf) {
375 zlog_warn("%s: vrf not found", __func__);
376 return;
377 }
378
379 vrf_delete(vrf);
380 }
1fdc9eae 381}
382
d62a17ae 383static int get_iflink_speed(const char *ifname)
535fe877 384{
d62a17ae 385 struct ifreq ifdata;
386 struct ethtool_cmd ecmd;
387 int sd;
388 int rc;
389
390 /* initialize struct */
391 memset(&ifdata, 0, sizeof(ifdata));
392
393 /* set interface name */
394 strcpy(ifdata.ifr_name, ifname);
395
396 /* initialize ethtool interface */
397 memset(&ecmd, 0, sizeof(ecmd));
398 ecmd.cmd = ETHTOOL_GSET; /* ETHTOOL_GLINK */
399 ifdata.ifr_data = (__caddr_t)&ecmd;
400
401 /* use ioctl to get IP address of an interface */
402 sd = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP);
403 if (sd < 0) {
404 zlog_debug("Failure to read interface %s speed: %d %s", ifname,
405 errno, safe_strerror(errno));
406 return 0;
407 }
408
409 /* Get the current link state for the interface */
410 rc = ioctl(sd, SIOCETHTOOL, (char *)&ifdata);
411 if (rc < 0) {
412 zlog_debug("IOCTL failure to read interface %s speed: %d %s",
413 ifname, errno, safe_strerror(errno));
414 ecmd.speed_hi = 0;
415 ecmd.speed = 0;
416 }
417
418 close(sd);
419
420 return (ecmd.speed_hi << 16) | ecmd.speed;
535fe877
DS		 421}
422
d62a17ae 423static int netlink_extract_bridge_info(struct rtattr *link_data,
424 struct zebra_l2info_bridge *bridge_info)
6675513d 425{
d62a17ae 426 struct rtattr *attr[IFLA_BR_MAX + 1];
427
428 memset(bridge_info, 0, sizeof(*bridge_info));
429 memset(attr, 0, sizeof attr);
430 parse_rtattr_nested(attr, IFLA_BR_MAX, link_data);
431 if (attr[IFLA_BR_VLAN_FILTERING])
432 bridge_info->vlan_aware =
433 *(u_char *)RTA_DATA(attr[IFLA_BR_VLAN_FILTERING]);
434 return 0;
6675513d 435}
436
d62a17ae 437static int netlink_extract_vlan_info(struct rtattr *link_data,
438 struct zebra_l2info_vlan *vlan_info)
6675513d 439{
d62a17ae 440 struct rtattr *attr[IFLA_VLAN_MAX + 1];
441 vlanid_t vid_in_msg;
442
443 memset(vlan_info, 0, sizeof(*vlan_info));
444 memset(attr, 0, sizeof attr);
445 parse_rtattr_nested(attr, IFLA_VLAN_MAX, link_data);
446 if (!attr[IFLA_VLAN_ID]) {
447 if (IS_ZEBRA_DEBUG_KERNEL)
448 zlog_debug("IFLA_VLAN_ID missing from VLAN IF message");
449 return -1;
450 }
451
452 vid_in_msg = *(vlanid_t *)RTA_DATA(attr[IFLA_VLAN_ID]);
453 vlan_info->vid = vid_in_msg;
454 return 0;
6675513d 455}
456
d62a17ae 457static int netlink_extract_vxlan_info(struct rtattr *link_data,
458 struct zebra_l2info_vxlan *vxl_info)
6675513d 459{
d62a17ae 460 struct rtattr *attr[IFLA_VXLAN_MAX + 1];
461 vni_t vni_in_msg;
462 struct in_addr vtep_ip_in_msg;
463
464 memset(vxl_info, 0, sizeof(*vxl_info));
465 memset(attr, 0, sizeof attr);
466 parse_rtattr_nested(attr, IFLA_VXLAN_MAX, link_data);
467 if (!attr[IFLA_VXLAN_ID]) {
468 if (IS_ZEBRA_DEBUG_KERNEL)
469 zlog_debug(
470 "IFLA_VXLAN_ID missing from VXLAN IF message");
471 return -1;
472 }
473
474 vni_in_msg = *(vni_t *)RTA_DATA(attr[IFLA_VXLAN_ID]);
475 vxl_info->vni = vni_in_msg;
476 if (!attr[IFLA_VXLAN_LOCAL]) {
477 if (IS_ZEBRA_DEBUG_KERNEL)
478 zlog_debug(
479 "IFLA_VXLAN_LOCAL missing from VXLAN IF message");
480 } else {
481 vtep_ip_in_msg =
482 *(struct in_addr *)RTA_DATA(attr[IFLA_VXLAN_LOCAL]);
483 vxl_info->vtep_ip = vtep_ip_in_msg;
484 }
485
486 return 0;
6675513d 487}
488
489/*
490 * Extract and save L2 params (of interest) for an interface. When a
491 * bridge interface is added or updated, take further actions to map
492 * its members. Likewise, for VxLAN interface.
493 */
d62a17ae 494static void netlink_interface_update_l2info(struct interface *ifp,
495 struct rtattr *link_data, int add)
6675513d 496{
d62a17ae 497 if (!link_data)
498 return;
499
500 if (IS_ZEBRA_IF_BRIDGE(ifp)) {
501 struct zebra_l2info_bridge bridge_info;
502
503 netlink_extract_bridge_info(link_data, &bridge_info);
504 zebra_l2_bridge_add_update(ifp, &bridge_info, add);
505 } else if (IS_ZEBRA_IF_VLAN(ifp)) {
506 struct zebra_l2info_vlan vlan_info;
507
508 netlink_extract_vlan_info(link_data, &vlan_info);
509 zebra_l2_vlanif_update(ifp, &vlan_info);
510 } else if (IS_ZEBRA_IF_VXLAN(ifp)) {
511 struct zebra_l2info_vxlan vxlan_info;
512
513 netlink_extract_vxlan_info(link_data, &vxlan_info);
514 zebra_l2_vxlanif_add_update(ifp, &vxlan_info, add);
515 }
6675513d 516}
517
d62a17ae 518static int netlink_bridge_interface(struct nlmsghdr *h, int len, ns_id_t ns_id,
519 int startup)
6675513d 520{
d62a17ae 521 char *name = NULL;
522 struct ifinfomsg *ifi;
523 struct rtattr *tb[IFLA_MAX + 1];
524 struct interface *ifp;
525 struct rtattr *aftb[IFLA_BRIDGE_MAX + 1];
526 struct {
527 u_int16_t flags;
528 u_int16_t vid;
529 } * vinfo;
530 vlanid_t access_vlan;
531
532 /* Fetch name and ifindex */
533 ifi = NLMSG_DATA(h);
534 memset(tb, 0, sizeof tb);
535 netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
536
537 if (tb[IFLA_IFNAME] == NULL)
538 return -1;
539 name = (char *)RTA_DATA(tb[IFLA_IFNAME]);
540
541 /* The interface should already be known, if not discard. */
542 ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(ns_id), ifi->ifi_index);
543 if (!ifp) {
544 zlog_warn("Cannot find bridge IF %s(%u)", name, ifi->ifi_index);
545 return 0;
546 }
547 if (!IS_ZEBRA_IF_VXLAN(ifp))
548 return 0;
549
550 /* We are only interested in the access VLAN i.e., AF_SPEC */
551 if (!tb[IFLA_AF_SPEC])
552 return 0;
553
554 /* There is a 1-to-1 mapping of VLAN to VxLAN - hence
555 * only 1 access VLAN is accepted.
556 */
557 memset(aftb, 0, sizeof aftb);
558 parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, tb[IFLA_AF_SPEC]);
559 if (!aftb[IFLA_BRIDGE_VLAN_INFO])
560 return 0;
561
562 vinfo = RTA_DATA(aftb[IFLA_BRIDGE_VLAN_INFO]);
563 if (!(vinfo->flags & BRIDGE_VLAN_INFO_PVID))
564 return 0;
565
566 access_vlan = (vlanid_t)vinfo->vid;
567 if (IS_ZEBRA_DEBUG_KERNEL)
568 zlog_debug("Access VLAN %u for VxLAN IF %s(%u)", access_vlan,
569 name, ifi->ifi_index);
570 zebra_l2_vxlanif_update_access_vlan(ifp, access_vlan);
571 return 0;
6675513d 572}
573
1fdc9eae 574/* Called from interface_lookup_netlink(). This function is only used
575 during bootstrap. */
d62a17ae 576static int netlink_interface(struct sockaddr_nl *snl, struct nlmsghdr *h,
577 ns_id_t ns_id, int startup)
1fdc9eae 578{
d62a17ae 579 int len;
580 struct ifinfomsg *ifi;
581 struct rtattr *tb[IFLA_MAX + 1];
582 struct rtattr *linkinfo[IFLA_MAX + 1];
583 struct interface *ifp;
584 char *name = NULL;
585 char *kind = NULL;
586 char *slave_kind = NULL;
587 struct zebra_ns *zns;
588 vrf_id_t vrf_id = VRF_DEFAULT;
589 zebra_iftype_t zif_type = ZEBRA_IF_OTHER;
590 zebra_slave_iftype_t zif_slave_type = ZEBRA_IF_SLAVE_NONE;
591 ifindex_t bridge_ifindex = IFINDEX_INTERNAL;
592 ifindex_t link_ifindex = IFINDEX_INTERNAL;
593
594 zns = zebra_ns_lookup(ns_id);
595 ifi = NLMSG_DATA(h);
596
597 if (h->nlmsg_type != RTM_NEWLINK)
598 return 0;
599
600 len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg));
601 if (len < 0)
602 return -1;
603
604 /* We are interested in some AF_BRIDGE notifications. */
605 if (ifi->ifi_family == AF_BRIDGE)
606 return netlink_bridge_interface(h, len, ns_id, startup);
607
608 /* Looking up interface name. */
609 memset(tb, 0, sizeof tb);
610 memset(linkinfo, 0, sizeof linkinfo);
611 netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
1fdc9eae 612
613#ifdef IFLA_WIRELESS
d62a17ae 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",
618 __func__);
619 return 0;
620 }
1fdc9eae 621#endif /* IFLA_WIRELESS */
622
d62a17ae 623 if (tb[IFLA_IFNAME] == NULL)
624 return -1;
625 name = (char *)RTA_DATA(tb[IFLA_IFNAME]);
1fdc9eae 626
d62a17ae 627 if (tb[IFLA_LINKINFO]) {
628 parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]);
1fdc9eae 629
d62a17ae 630 if (linkinfo[IFLA_INFO_KIND])
631 kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]);
1fdc9eae 632
633#if HAVE_DECL_IFLA_INFO_SLAVE_KIND
d62a17ae 634 if (linkinfo[IFLA_INFO_SLAVE_KIND])
635 slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]);
1fdc9eae 636#endif
637
d62a17ae 638 netlink_determine_zebra_iftype(kind, &zif_type);
639 }
640
641 /* If VRF, create the VRF structure itself. */
642 if (zif_type == ZEBRA_IF_VRF) {
643 netlink_vrf_change(h, tb[IFLA_LINKINFO], name);
644 vrf_id = (vrf_id_t)ifi->ifi_index;
645 }
646
647 if (tb[IFLA_MASTER]) {
648 if (slave_kind && (strcmp(slave_kind, "vrf") == 0)) {
649 zif_slave_type = ZEBRA_IF_SLAVE_VRF;
650 vrf_id = *(u_int32_t *)RTA_DATA(tb[IFLA_MASTER]);
651 } else if (slave_kind && (strcmp(slave_kind, "bridge") == 0)) {
652 zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE;
653 bridge_ifindex =
654 *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]);
655 } else
656 zif_slave_type = ZEBRA_IF_SLAVE_OTHER;
657 }
658
659 /* If linking to another interface, note it. */
660 if (tb[IFLA_LINK])
661 link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]);
662
663 /* Add interface. */
664 ifp = if_get_by_name(name, vrf_id);
665 set_ifindex(ifp, ifi->ifi_index, zns);
666 ifp->flags = ifi->ifi_flags & 0x0000fffff;
667 if (IS_ZEBRA_IF_VRF(ifp))
668 SET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK);
669 ifp->mtu6 = ifp->mtu = *(uint32_t *)RTA_DATA(tb[IFLA_MTU]);
670 ifp->metric = 0;
671 ifp->speed = get_iflink_speed(name);
672 ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN;
673
674 /* Set zebra interface type */
675 zebra_if_set_ziftype(ifp, zif_type, zif_slave_type);
676
677 /* Update link. */
678 zebra_if_update_link(ifp, link_ifindex);
679
680 /* Hardware type and address. */
681 ifp->ll_type = netlink_to_zebra_link_type(ifi->ifi_type);
682 netlink_interface_update_hw_addr(tb, ifp);
683
684 if_add_update(ifp);
685
686 /* Extract and save L2 interface information, take additional actions.
687 */
688 netlink_interface_update_l2info(ifp, linkinfo[IFLA_INFO_DATA], 1);
689 if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp))
690 zebra_l2if_update_bridge_slave(ifp, bridge_ifindex);
691
692 return 0;
1fdc9eae 693}
694
289602d7 695/* Request for specific interface or address information from the kernel */
d62a17ae 696static int netlink_request_intf_addr(struct zebra_ns *zns, int family, int type,
697 u_int32_t filter_mask)
289602d7 698{
d62a17ae 699 struct {
700 struct nlmsghdr n;
701 struct ifinfomsg ifm;
702 char buf[256];
703 } req;
704
705 /* Form the request, specifying filter (rtattr) if needed. */
706 memset(&req, 0, sizeof(req));
707 req.n.nlmsg_type = type;
708 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg));
709 req.ifm.ifi_family = family;
710
711 /* Include filter, if specified. */
712 if (filter_mask)
713 addattr32(&req.n, sizeof(req), IFLA_EXT_MASK, filter_mask);
714
715 return netlink_request(&zns->netlink_cmd, &req.n);
289602d7 716}
717
1fdc9eae 718/* Interface lookup by netlink socket. */
d62a17ae 719int interface_lookup_netlink(struct zebra_ns *zns)
1fdc9eae 720{
d62a17ae 721 int ret;
722
723 /* Get interface information. */
724 ret = netlink_request_intf_addr(zns, AF_PACKET, RTM_GETLINK, 0);
725 if (ret < 0)
726 return ret;
727 ret = netlink_parse_info(netlink_interface, &zns->netlink_cmd, zns, 0,
728 1);
729 if (ret < 0)
730 return ret;
731
732 /* Get interface information - for bridge interfaces. */
733 ret = netlink_request_intf_addr(zns, AF_BRIDGE, RTM_GETLINK,
734 RTEXT_FILTER_BRVLAN);
735 if (ret < 0)
736 return ret;
737 ret = netlink_parse_info(netlink_interface, &zns->netlink_cmd, zns, 0,
738 0);
739 if (ret < 0)
740 return ret;
741
742 /* Get interface information - for bridge interfaces. */
743 ret = netlink_request_intf_addr(zns, AF_BRIDGE, RTM_GETLINK,
744 RTEXT_FILTER_BRVLAN);
745 if (ret < 0)
746 return ret;
747 ret = netlink_parse_info(netlink_interface, &zns->netlink_cmd, zns, 0,
748 0);
749 if (ret < 0)
750 return ret;
751
752 /* Get IPv4 address of the interfaces. */
753 ret = netlink_request_intf_addr(zns, AF_INET, RTM_GETADDR, 0);
754 if (ret < 0)
755 return ret;
756 ret = netlink_parse_info(netlink_interface_addr, &zns->netlink_cmd, zns,
757 0, 1);
758 if (ret < 0)
759 return ret;
760
761 /* Get IPv6 address of the interfaces. */
762 ret = netlink_request_intf_addr(zns, AF_INET6, RTM_GETADDR, 0);
763 if (ret < 0)
764 return ret;
765 ret = netlink_parse_info(netlink_interface_addr, &zns->netlink_cmd, zns,
766 0, 1);
767 if (ret < 0)
768 return ret;
769
770 return 0;
1fdc9eae 771}
772
773/* Interface address modification. */
d62a17ae 774static int netlink_address(int cmd, int family, struct interface *ifp,
775 struct connected *ifc)
1fdc9eae 776{
d62a17ae 777 int bytelen;
778 struct prefix *p;
1fdc9eae 779
d62a17ae 780 struct {
781 struct nlmsghdr n;
782 struct ifaddrmsg ifa;
783 char buf[NL_PKT_BUF_SIZE];
784 } req;
1fdc9eae 785
d62a17ae 786 struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT);
1fdc9eae 787
d62a17ae 788 p = ifc->address;
789 memset(&req, 0, sizeof req - NL_PKT_BUF_SIZE);
1fdc9eae 790
d62a17ae 791 bytelen = (family == AF_INET ? 4 : 16);
1fdc9eae 792
d62a17ae 793 req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg));
794 req.n.nlmsg_flags = NLM_F_REQUEST;
795 req.n.nlmsg_type = cmd;
796 req.n.nlmsg_pid = zns->netlink_cmd.snl.nl_pid;
a55ba23f 797
d62a17ae 798 req.ifa.ifa_family = family;
1fdc9eae 799
d62a17ae 800 req.ifa.ifa_index = ifp->ifindex;
801 req.ifa.ifa_prefixlen = p->prefixlen;
1fdc9eae 802
d62a17ae 803 addattr_l(&req.n, sizeof req, IFA_LOCAL, &p->u.prefix, bytelen);
1fdc9eae 804
d62a17ae 805 if (family == AF_INET && cmd == RTM_NEWADDR) {
806 if (!CONNECTED_PEER(ifc) && ifc->destination) {
807 p = ifc->destination;
808 addattr_l(&req.n, sizeof req, IFA_BROADCAST,
809 &p->u.prefix, bytelen);
810 }
811 }
1fdc9eae 812
d62a17ae 813 if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY))
814 SET_FLAG(req.ifa.ifa_flags, IFA_F_SECONDARY);
1fdc9eae 815
d62a17ae 816 if (ifc->label)
817 addattr_l(&req.n, sizeof req, IFA_LABEL, ifc->label,
818 strlen(ifc->label) + 1);
1fdc9eae 819
d62a17ae 820 return netlink_talk(netlink_talk_filter, &req.n, &zns->netlink_cmd, zns,
821 0);
1fdc9eae 822}
823
d62a17ae 824int kernel_address_add_ipv4(struct interface *ifp, struct connected *ifc)
1fdc9eae 825{
d62a17ae 826 return netlink_address(RTM_NEWADDR, AF_INET, ifp, ifc);
1fdc9eae 827}
828
d62a17ae 829int kernel_address_delete_ipv4(struct interface *ifp, struct connected *ifc)
1fdc9eae 830{
d62a17ae 831 return netlink_address(RTM_DELADDR, AF_INET, ifp, ifc);
1fdc9eae 832}
833
d62a17ae 834int netlink_interface_addr(struct sockaddr_nl *snl, struct nlmsghdr *h,
835 ns_id_t ns_id, int startup)
1fdc9eae 836{
d62a17ae 837 int len;
838 struct ifaddrmsg *ifa;
839 struct rtattr *tb[IFA_MAX + 1];
840 struct interface *ifp;
841 void *addr;
842 void *broad;
843 u_char flags = 0;
844 char *label = NULL;
845 struct zebra_ns *zns;
846
847 zns = zebra_ns_lookup(ns_id);
848 ifa = NLMSG_DATA(h);
849
850 if (ifa->ifa_family != AF_INET && ifa->ifa_family != AF_INET6)
851 return 0;
852
853 if (h->nlmsg_type != RTM_NEWADDR && h->nlmsg_type != RTM_DELADDR)
854 return 0;
855
856 len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifaddrmsg));
857 if (len < 0)
858 return -1;
859
860 memset(tb, 0, sizeof tb);
861 netlink_parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), len);
862
863 ifp = if_lookup_by_index_per_ns(zns, ifa->ifa_index);
864 if (ifp == NULL) {
865 zlog_err(
866 "netlink_interface_addr can't find interface by index %d",
867 ifa->ifa_index);
868 return -1;
869 }
870
871 if (IS_ZEBRA_DEBUG_KERNEL) /* remove this line to see initial ifcfg */
872 {
873 char buf[BUFSIZ];
874 zlog_debug("netlink_interface_addr %s %s flags 0x%x:",
875 nl_msg_type_to_str(h->nlmsg_type), ifp->name,
876 ifa->ifa_flags);
877 if (tb[IFA_LOCAL])
878 zlog_debug(" IFA_LOCAL %s/%d",
879 inet_ntop(ifa->ifa_family,
880 RTA_DATA(tb[IFA_LOCAL]), buf,
881 BUFSIZ),
882 ifa->ifa_prefixlen);
883 if (tb[IFA_ADDRESS])
884 zlog_debug(" IFA_ADDRESS %s/%d",
885 inet_ntop(ifa->ifa_family,
886 RTA_DATA(tb[IFA_ADDRESS]), buf,
887 BUFSIZ),
888 ifa->ifa_prefixlen);
889 if (tb[IFA_BROADCAST])
890 zlog_debug(" IFA_BROADCAST %s/%d",
891 inet_ntop(ifa->ifa_family,
892 RTA_DATA(tb[IFA_BROADCAST]), buf,
893 BUFSIZ),
894 ifa->ifa_prefixlen);
895 if (tb[IFA_LABEL] && strcmp(ifp->name, RTA_DATA(tb[IFA_LABEL])))
896 zlog_debug(" IFA_LABEL %s",
897 (char *)RTA_DATA(tb[IFA_LABEL]));
898
899 if (tb[IFA_CACHEINFO]) {
900 struct ifa_cacheinfo *ci = RTA_DATA(tb[IFA_CACHEINFO]);
901 zlog_debug(" IFA_CACHEINFO pref %d, valid %d",
902 ci->ifa_prefered, ci->ifa_valid);
903 }
904 }
905
906 /* logic copied from iproute2/ip/ipaddress.c:print_addrinfo() */
907 if (tb[IFA_LOCAL] == NULL)
908 tb[IFA_LOCAL] = tb[IFA_ADDRESS];
909 if (tb[IFA_ADDRESS] == NULL)
910 tb[IFA_ADDRESS] = tb[IFA_LOCAL];
911
912 /* local interface address */
913 addr = (tb[IFA_LOCAL] ? RTA_DATA(tb[IFA_LOCAL]) : NULL);
914
915 /* is there a peer address? */
916 if (tb[IFA_ADDRESS]
917 && memcmp(RTA_DATA(tb[IFA_ADDRESS]), RTA_DATA(tb[IFA_LOCAL]),
918 RTA_PAYLOAD(tb[IFA_ADDRESS]))) {
919 broad = RTA_DATA(tb[IFA_ADDRESS]);
920 SET_FLAG(flags, ZEBRA_IFA_PEER);
921 } else
922 /* seeking a broadcast address */
923 broad = (tb[IFA_BROADCAST] ? RTA_DATA(tb[IFA_BROADCAST])
924 : NULL);
925
926 /* addr is primary key, SOL if we don't have one */
927 if (addr == NULL) {
928 zlog_debug("%s: NULL address", __func__);
929 return -1;
930 }
931
932 /* Flags. */
933 if (ifa->ifa_flags & IFA_F_SECONDARY)
934 SET_FLAG(flags, ZEBRA_IFA_SECONDARY);
935
936 /* Label */
937 if (tb[IFA_LABEL])
938 label = (char *)RTA_DATA(tb[IFA_LABEL]);
939
940 if (ifp && label && strcmp(ifp->name, label) == 0)
941 label = NULL;
942
943 /* Register interface address to the interface. */
944 if (ifa->ifa_family == AF_INET) {
945 if (h->nlmsg_type == RTM_NEWADDR)
946 connected_add_ipv4(ifp, flags, (struct in_addr *)addr,
947 ifa->ifa_prefixlen,
948 (struct in_addr *)broad, label);
949 else
950 connected_delete_ipv4(
951 ifp, flags, (struct in_addr *)addr,
952 ifa->ifa_prefixlen, (struct in_addr *)broad);
953 }
954 if (ifa->ifa_family == AF_INET6) {
955 if (h->nlmsg_type == RTM_NEWADDR) {
956 /* Only consider valid addresses; we'll not get a
957 * notification from
958 * the kernel till IPv6 DAD has completed, but at init
959 * time, Quagga
960 * does query for and will receive all addresses.
961 */
962 if (!(ifa->ifa_flags
963 & (IFA_F_DADFAILED | IFA_F_TENTATIVE)))
964 connected_add_ipv6(
965 ifp, flags, (struct in6_addr *)addr,
966 ifa->ifa_prefixlen,
967 (struct in6_addr *)broad, label);
968 } else
969 connected_delete_ipv6(ifp, (struct in6_addr *)addr,
970 ifa->ifa_prefixlen,
971 (struct in6_addr *)broad);
972 }
973
974 return 0;
1fdc9eae 975}
976
d62a17ae 977int netlink_link_change(struct sockaddr_nl *snl, struct nlmsghdr *h,
978 ns_id_t ns_id, int startup)
1fdc9eae 979{
d62a17ae 980 int len;
981 struct ifinfomsg *ifi;
982 struct rtattr *tb[IFLA_MAX + 1];
983 struct rtattr *linkinfo[IFLA_MAX + 1];
984 struct interface *ifp;
985 char *name = NULL;
986 char *kind = NULL;
987 char *slave_kind = NULL;
988 struct zebra_ns *zns;
989 vrf_id_t vrf_id = VRF_DEFAULT;
990 zebra_iftype_t zif_type = ZEBRA_IF_OTHER;
991 zebra_slave_iftype_t zif_slave_type = ZEBRA_IF_SLAVE_NONE;
992 ifindex_t bridge_ifindex = IFINDEX_INTERNAL;
993 ifindex_t link_ifindex = IFINDEX_INTERNAL;
994
995
996 zns = zebra_ns_lookup(ns_id);
997 ifi = NLMSG_DATA(h);
998
999 if (!(h->nlmsg_type == RTM_NEWLINK || h->nlmsg_type == RTM_DELLINK)) {
1000 /* If this is not link add/delete message so print warning. */
1001 zlog_warn("netlink_link_change: wrong kernel message %d",
1002 h->nlmsg_type);
1003 return 0;
1004 }
1005
1006 len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg));
1007 if (len < 0)
1008 return -1;
1009
1010 /* We are interested in some AF_BRIDGE notifications. */
1011 if (ifi->ifi_family == AF_BRIDGE)
1012 return netlink_bridge_interface(h, len, ns_id, startup);
1013
1014 /* Looking up interface name. */
1015 memset(tb, 0, sizeof tb);
1016 memset(linkinfo, 0, sizeof linkinfo);
1017 netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len);
1fdc9eae 1018
1019#ifdef IFLA_WIRELESS
d62a17ae 1020 /* check for wireless messages to ignore */
1021 if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0)) {
1022 if (IS_ZEBRA_DEBUG_KERNEL)
1023 zlog_debug("%s: ignoring IFLA_WIRELESS message",
1024 __func__);
1025 return 0;
1026 }
1fdc9eae 1027#endif /* IFLA_WIRELESS */
1028
d62a17ae 1029 if (tb[IFLA_IFNAME] == NULL)
1030 return -1;
1031 name = (char *)RTA_DATA(tb[IFLA_IFNAME]);
1fdc9eae 1032
d62a17ae 1033 if (tb[IFLA_LINKINFO]) {
1034 parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]);
1fdc9eae 1035
d62a17ae 1036 if (linkinfo[IFLA_INFO_KIND])
1037 kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]);
1fdc9eae 1038
1039#if HAVE_DECL_IFLA_INFO_SLAVE_KIND
d62a17ae 1040 if (linkinfo[IFLA_INFO_SLAVE_KIND])
1041 slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]);
1fdc9eae 1042#endif
1043
d62a17ae 1044 netlink_determine_zebra_iftype(kind, &zif_type);
1045 }
6675513d 1046
d62a17ae 1047 /* If linking to another interface, note it. */
1048 if (tb[IFLA_LINK])
1049 link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]);
1fdc9eae 1050
d62a17ae 1051 /* If VRF, create or update the VRF structure itself. */
1052 if (zif_type == ZEBRA_IF_VRF) {
1053 netlink_vrf_change(h, tb[IFLA_LINKINFO], name);
1054 vrf_id = (vrf_id_t)ifi->ifi_index;
1055 }
1fdc9eae 1056
d62a17ae 1057 /* See if interface is present. */
1058 ifp = if_lookup_by_name_per_ns(zns, name);
1059
1060 if (h->nlmsg_type == RTM_NEWLINK) {
1061 if (tb[IFLA_MASTER]) {
1062 if (slave_kind && (strcmp(slave_kind, "vrf") == 0)) {
1063 zif_slave_type = ZEBRA_IF_SLAVE_VRF;
1064 vrf_id =
1065 *(u_int32_t *)RTA_DATA(tb[IFLA_MASTER]);
1066 } else if (slave_kind
1067 && (strcmp(slave_kind, "bridge") == 0)) {
1068 zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE;
1069 bridge_ifindex =
1070 *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]);
1071 } else
1072 zif_slave_type = ZEBRA_IF_SLAVE_OTHER;
1073 }
1074
1075 if (ifp == NULL
1076 || !CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE)) {
1077 /* Add interface notification from kernel */
1078 if (IS_ZEBRA_DEBUG_KERNEL)
1079 zlog_debug(
1080 "RTM_NEWLINK ADD for %s(%u) vrf_id %u type %d "
1081 "sl_type %d master %u flags 0x%x",
1082 name, ifi->ifi_index, vrf_id, zif_type,
1083 zif_slave_type, bridge_ifindex,
1084 ifi->ifi_flags);
1085
1086 if (ifp == NULL) {
1087 /* unknown interface */
1088 ifp = if_get_by_name(name, vrf_id);
1089 } else {
1090 /* pre-configured interface, learnt now */
1091 if (ifp->vrf_id != vrf_id)
1092 if_update_to_new_vrf(ifp, vrf_id);
1093 }
1094
1095 /* Update interface information. */
1096 set_ifindex(ifp, ifi->ifi_index, zns);
1097 ifp->flags = ifi->ifi_flags & 0x0000fffff;
1098 if (IS_ZEBRA_IF_VRF(ifp))
1099 SET_FLAG(ifp->status,
1100 ZEBRA_INTERFACE_VRF_LOOPBACK);
1101 ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]);
1102 ifp->metric = 0;
1103 ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN;
1104
1105 /* Set interface type */
1106 zebra_if_set_ziftype(ifp, zif_type, zif_slave_type);
1107
1108 /* Update link. */
1109 zebra_if_update_link(ifp, link_ifindex);
1110
1111 netlink_interface_update_hw_addr(tb, ifp);
1112
1113 /* Inform clients, install any configured addresses. */
1114 if_add_update(ifp);
1115
1116 /* Extract and save L2 interface information, take
1117 * additional actions. */
1118 netlink_interface_update_l2info(
1119 ifp, linkinfo[IFLA_INFO_DATA], 1);
1120 if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp))
1121 zebra_l2if_update_bridge_slave(ifp,
1122 bridge_ifindex);
1123 } else if (ifp->vrf_id != vrf_id) {
1124 /* VRF change for an interface. */
1125 if (IS_ZEBRA_DEBUG_KERNEL)
1126 zlog_debug(
1127 "RTM_NEWLINK vrf-change for %s(%u) "
1128 "vrf_id %u -> %u flags 0x%x",
1129 name, ifp->ifindex, ifp->vrf_id, vrf_id,
1130 ifi->ifi_flags);
1131
1132 if_handle_vrf_change(ifp, vrf_id);
1133 } else {
1134 int was_bridge_slave;
1135
1136 /* Interface update. */
1137 if (IS_ZEBRA_DEBUG_KERNEL)
1138 zlog_debug(
1139 "RTM_NEWLINK update for %s(%u) "
1140 "sl_type %d master %u flags 0x%x",
1141 name, ifp->ifindex, zif_slave_type,
1142 bridge_ifindex, ifi->ifi_flags);
1143
1144 set_ifindex(ifp, ifi->ifi_index, zns);
1145 ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]);
1146 ifp->metric = 0;
1147
1148 /* Update interface type - NOTE: Only slave_type can
1149 * change. */
1150 was_bridge_slave = IS_ZEBRA_IF_BRIDGE_SLAVE(ifp);
1151 zebra_if_set_ziftype(ifp, zif_type, zif_slave_type);
1152
1153 netlink_interface_update_hw_addr(tb, ifp);
1154
1155 if (if_is_no_ptm_operative(ifp)) {
1156 ifp->flags = ifi->ifi_flags & 0x0000fffff;
1157 if (!if_is_no_ptm_operative(ifp)) {
1158 if (IS_ZEBRA_DEBUG_KERNEL)
1159 zlog_debug(
1160 "Intf %s(%u) has gone DOWN",
1161 name, ifp->ifindex);
1162 if_down(ifp);
1163 } else if (if_is_operative(ifp)) {
1164 /* Must notify client daemons of new
1165 * interface status. */
1166 if (IS_ZEBRA_DEBUG_KERNEL)
1167 zlog_debug(
1168 "Intf %s(%u) PTM up, notifying clients",
1169 name, ifp->ifindex);
1170 zebra_interface_up_update(ifp);
1171 }
1172 } else {
1173 ifp->flags = ifi->ifi_flags & 0x0000fffff;
1174 if (if_is_operative(ifp)) {
1175 if (IS_ZEBRA_DEBUG_KERNEL)
1176 zlog_debug(
1177 "Intf %s(%u) has come UP",
1178 name, ifp->ifindex);
1179 if_up(ifp);
1180 }
1181 }
1182
1183 /* Extract and save L2 interface information, take
1184 * additional actions. */
1185 netlink_interface_update_l2info(
1186 ifp, linkinfo[IFLA_INFO_DATA], 0);
1187 if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp) || was_bridge_slave)
1188 zebra_l2if_update_bridge_slave(ifp,
1189 bridge_ifindex);
1190 }
1191 } else {
1192 /* Delete interface notification from kernel */
1193 if (ifp == NULL) {
1194 zlog_warn("RTM_DELLINK for unknown interface %s(%u)",
1195 name, ifi->ifi_index);
1196 return 0;
1197 }
1198
1199 if (IS_ZEBRA_DEBUG_KERNEL)
1200 zlog_debug("RTM_DELLINK for %s(%u)", name,
1201 ifp->ifindex);
1202
1203 UNSET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK);
1204
1205 /* Special handling for bridge or VxLAN interfaces. */
1206 if (IS_ZEBRA_IF_BRIDGE(ifp))
1207 zebra_l2_bridge_del(ifp);
1208 else if (IS_ZEBRA_IF_VXLAN(ifp))
1209 zebra_l2_vxlanif_del(ifp);
1210
1211 if (!IS_ZEBRA_IF_VRF(ifp))
1212 if_delete_update(ifp);
1fdc9eae 1213 }
1214
d62a17ae 1215 return 0;
1fdc9eae 1216}
718e3744 1217
1218/* Interface information read by netlink. */
d62a17ae 1219void interface_list(struct zebra_ns *zns)
718e3744 1220{
d62a17ae 1221 interface_lookup_netlink(zns);
718e3744 1222}
ddfeb486
DL		 1223
1224#endif /* GNU_LINUX */
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