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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> | |
ba777396 | 34 | #include <linux/if_link.h> |
1fdc9eae | 35 | #include <net/if_arp.h> |
535fe877 DS |
36 | #include <linux/sockios.h> |
37 | #include <linux/ethtool.h> | |
1fdc9eae | 38 | |
39 | #include "linklist.h" | |
40 | #include "if.h" | |
41 | #include "log.h" | |
42 | #include "prefix.h" | |
43 | #include "connected.h" | |
44 | #include "table.h" | |
45 | #include "memory.h" | |
46 | #include "zebra_memory.h" | |
47 | #include "rib.h" | |
48 | #include "thread.h" | |
49 | #include "privs.h" | |
50 | #include "nexthop.h" | |
51 | #include "vrf.h" | |
7922fc65 | 52 | #include "vrf_int.h" |
1fdc9eae | 53 | #include "mpls.h" |
718e3744 | 54 | |
5e6a74d8 | 55 | #include "vty.h" |
7dbeea9d | 56 | #include "zebra/zserv.h" |
1fdc9eae | 57 | #include "zebra/zebra_ns.h" |
58 | #include "zebra/zebra_vrf.h" | |
59 | #include "zebra/rt.h" | |
60 | #include "zebra/redistribute.h" | |
61 | #include "zebra/interface.h" | |
62 | #include "zebra/debug.h" | |
63 | #include "zebra/rtadv.h" | |
64 | #include "zebra/zebra_ptm.h" | |
65 | #include "zebra/zebra_mpls.h" | |
66 | #include "zebra/kernel_netlink.h" | |
67 | #include "zebra/if_netlink.h" | |
68 | ||
69 | ||
70 | /* Note: on netlink systems, there should be a 1-to-1 mapping between interface | |
71 | names and ifindex values. */ | |
d62a17ae | 72 | static void set_ifindex(struct interface *ifp, ifindex_t ifi_index, |
73 | struct zebra_ns *zns) | |
1fdc9eae | 74 | { |
d62a17ae | 75 | struct interface *oifp; |
76 | ||
77 | if (((oifp = if_lookup_by_index_per_ns(zns, ifi_index)) != NULL) | |
78 | && (oifp != ifp)) { | |
79 | if (ifi_index == IFINDEX_INTERNAL) | |
80 | zlog_err( | |
81 | "Netlink is setting interface %s ifindex to reserved " | |
82 | "internal value %u", | |
83 | ifp->name, ifi_index); | |
84 | else { | |
85 | if (IS_ZEBRA_DEBUG_KERNEL) | |
86 | zlog_debug( | |
87 | "interface index %d was renamed from %s to %s", | |
88 | ifi_index, oifp->name, ifp->name); | |
89 | if (if_is_up(oifp)) | |
90 | zlog_err( | |
91 | "interface rename detected on up interface: index %d " | |
92 | "was renamed from %s to %s, results are uncertain!", | |
93 | ifi_index, oifp->name, ifp->name); | |
94 | if_delete_update(oifp); | |
95 | } | |
96 | } | |
ff880b78 | 97 | if_set_index(ifp, ifi_index); |
1fdc9eae | 98 | } |
99 | ||
100 | /* Utility function to parse hardware link-layer address and update ifp */ | |
d62a17ae | 101 | static void netlink_interface_update_hw_addr(struct rtattr **tb, |
102 | struct interface *ifp) | |
1fdc9eae | 103 | { |
d62a17ae | 104 | int i; |
105 | ||
106 | if (tb[IFLA_ADDRESS]) { | |
107 | int hw_addr_len; | |
108 | ||
109 | hw_addr_len = RTA_PAYLOAD(tb[IFLA_ADDRESS]); | |
110 | ||
111 | if (hw_addr_len > INTERFACE_HWADDR_MAX) | |
112 | zlog_warn("Hardware address is too large: %d", | |
113 | hw_addr_len); | |
114 | else { | |
115 | ifp->hw_addr_len = hw_addr_len; | |
116 | memcpy(ifp->hw_addr, RTA_DATA(tb[IFLA_ADDRESS]), | |
117 | hw_addr_len); | |
118 | ||
119 | for (i = 0; i < hw_addr_len; i++) | |
120 | if (ifp->hw_addr[i] != 0) | |
121 | break; | |
122 | ||
123 | if (i == hw_addr_len) | |
124 | ifp->hw_addr_len = 0; | |
125 | else | |
126 | ifp->hw_addr_len = hw_addr_len; | |
127 | } | |
128 | } | |
1fdc9eae | 129 | } |
130 | ||
d62a17ae | 131 | static enum zebra_link_type netlink_to_zebra_link_type(unsigned int hwt) |
1fdc9eae | 132 | { |
d62a17ae | 133 | switch (hwt) { |
134 | case ARPHRD_ETHER: | |
135 | return ZEBRA_LLT_ETHER; | |
136 | case ARPHRD_EETHER: | |
137 | return ZEBRA_LLT_EETHER; | |
138 | case ARPHRD_AX25: | |
139 | return ZEBRA_LLT_AX25; | |
140 | case ARPHRD_PRONET: | |
141 | return ZEBRA_LLT_PRONET; | |
142 | case ARPHRD_IEEE802: | |
143 | return ZEBRA_LLT_IEEE802; | |
144 | case ARPHRD_ARCNET: | |
145 | return ZEBRA_LLT_ARCNET; | |
146 | case ARPHRD_APPLETLK: | |
147 | return ZEBRA_LLT_APPLETLK; | |
148 | case ARPHRD_DLCI: | |
149 | return ZEBRA_LLT_DLCI; | |
150 | case ARPHRD_ATM: | |
151 | return ZEBRA_LLT_ATM; | |
152 | case ARPHRD_METRICOM: | |
153 | return ZEBRA_LLT_METRICOM; | |
154 | case ARPHRD_IEEE1394: | |
155 | return ZEBRA_LLT_IEEE1394; | |
156 | case ARPHRD_EUI64: | |
157 | return ZEBRA_LLT_EUI64; | |
158 | case ARPHRD_INFINIBAND: | |
159 | return ZEBRA_LLT_INFINIBAND; | |
160 | case ARPHRD_SLIP: | |
161 | return ZEBRA_LLT_SLIP; | |
162 | case ARPHRD_CSLIP: | |
163 | return ZEBRA_LLT_CSLIP; | |
164 | case ARPHRD_SLIP6: | |
165 | return ZEBRA_LLT_SLIP6; | |
166 | case ARPHRD_CSLIP6: | |
167 | return ZEBRA_LLT_CSLIP6; | |
168 | case ARPHRD_RSRVD: | |
169 | return ZEBRA_LLT_RSRVD; | |
170 | case ARPHRD_ADAPT: | |
171 | return ZEBRA_LLT_ADAPT; | |
172 | case ARPHRD_ROSE: | |
173 | return ZEBRA_LLT_ROSE; | |
174 | case ARPHRD_X25: | |
175 | return ZEBRA_LLT_X25; | |
176 | case ARPHRD_PPP: | |
177 | return ZEBRA_LLT_PPP; | |
178 | case ARPHRD_CISCO: | |
179 | return ZEBRA_LLT_CHDLC; | |
180 | case ARPHRD_LAPB: | |
181 | return ZEBRA_LLT_LAPB; | |
182 | case ARPHRD_RAWHDLC: | |
183 | return ZEBRA_LLT_RAWHDLC; | |
184 | case ARPHRD_TUNNEL: | |
185 | return ZEBRA_LLT_IPIP; | |
186 | case ARPHRD_TUNNEL6: | |
187 | return ZEBRA_LLT_IPIP6; | |
188 | case ARPHRD_FRAD: | |
189 | return ZEBRA_LLT_FRAD; | |
190 | case ARPHRD_SKIP: | |
191 | return ZEBRA_LLT_SKIP; | |
192 | case ARPHRD_LOOPBACK: | |
193 | return ZEBRA_LLT_LOOPBACK; | |
194 | case ARPHRD_LOCALTLK: | |
195 | return ZEBRA_LLT_LOCALTLK; | |
196 | case ARPHRD_FDDI: | |
197 | return ZEBRA_LLT_FDDI; | |
198 | case ARPHRD_SIT: | |
199 | return ZEBRA_LLT_SIT; | |
200 | case ARPHRD_IPDDP: | |
201 | return ZEBRA_LLT_IPDDP; | |
202 | case ARPHRD_IPGRE: | |
203 | return ZEBRA_LLT_IPGRE; | |
204 | case ARPHRD_PIMREG: | |
205 | return ZEBRA_LLT_PIMREG; | |
206 | case ARPHRD_HIPPI: | |
207 | return ZEBRA_LLT_HIPPI; | |
208 | case ARPHRD_ECONET: | |
209 | return ZEBRA_LLT_ECONET; | |
210 | case ARPHRD_IRDA: | |
211 | return ZEBRA_LLT_IRDA; | |
212 | case ARPHRD_FCPP: | |
213 | return ZEBRA_LLT_FCPP; | |
214 | case ARPHRD_FCAL: | |
215 | return ZEBRA_LLT_FCAL; | |
216 | case ARPHRD_FCPL: | |
217 | return ZEBRA_LLT_FCPL; | |
218 | case ARPHRD_FCFABRIC: | |
219 | return ZEBRA_LLT_FCFABRIC; | |
220 | case ARPHRD_IEEE802_TR: | |
221 | return ZEBRA_LLT_IEEE802_TR; | |
222 | case ARPHRD_IEEE80211: | |
223 | return ZEBRA_LLT_IEEE80211; | |
4268e09e | 224 | #ifdef ARPHRD_IEEE802154 |
d62a17ae | 225 | case ARPHRD_IEEE802154: |
226 | return ZEBRA_LLT_IEEE802154; | |
4268e09e | 227 | #endif |
1fdc9eae | 228 | #ifdef ARPHRD_IP6GRE |
d62a17ae | 229 | case ARPHRD_IP6GRE: |
230 | return ZEBRA_LLT_IP6GRE; | |
1fdc9eae | 231 | #endif |
232 | #ifdef ARPHRD_IEEE802154_PHY | |
d62a17ae | 233 | case ARPHRD_IEEE802154_PHY: |
234 | return ZEBRA_LLT_IEEE802154_PHY; | |
1fdc9eae | 235 | #endif |
236 | ||
d62a17ae | 237 | default: |
238 | return ZEBRA_LLT_UNKNOWN; | |
239 | } | |
1fdc9eae | 240 | } |
241 | ||
d62a17ae | 242 | static void netlink_determine_zebra_iftype(char *kind, zebra_iftype_t *zif_type) |
6675513d | 243 | { |
d62a17ae | 244 | *zif_type = ZEBRA_IF_OTHER; |
245 | ||
246 | if (!kind) | |
247 | return; | |
248 | ||
249 | if (strcmp(kind, "vrf") == 0) | |
250 | *zif_type = ZEBRA_IF_VRF; | |
251 | else if (strcmp(kind, "bridge") == 0) | |
252 | *zif_type = ZEBRA_IF_BRIDGE; | |
253 | else if (strcmp(kind, "vlan") == 0) | |
254 | *zif_type = ZEBRA_IF_VLAN; | |
255 | else if (strcmp(kind, "vxlan") == 0) | |
256 | *zif_type = ZEBRA_IF_VXLAN; | |
1a98c087 MK |
257 | else if (strcmp(kind, "macvlan") == 0) |
258 | *zif_type = ZEBRA_IF_MACVLAN; | |
6675513d | 259 | } |
52d8f0d8 | 260 | |
d62a17ae | 261 | #define parse_rtattr_nested(tb, max, rta) \ |
262 | netlink_parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)) | |
1fdc9eae | 263 | |
d62a17ae | 264 | static void netlink_vrf_change(struct nlmsghdr *h, struct rtattr *tb, |
265 | const char *name) | |
1fdc9eae | 266 | { |
d62a17ae | 267 | struct ifinfomsg *ifi; |
268 | struct rtattr *linkinfo[IFLA_INFO_MAX + 1]; | |
269 | struct rtattr *attr[IFLA_VRF_MAX + 1]; | |
270 | struct vrf *vrf; | |
271 | struct zebra_vrf *zvrf; | |
272 | u_int32_t nl_table_id; | |
273 | ||
274 | ifi = NLMSG_DATA(h); | |
275 | ||
276 | memset(linkinfo, 0, sizeof linkinfo); | |
277 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb); | |
278 | ||
279 | if (!linkinfo[IFLA_INFO_DATA]) { | |
280 | if (IS_ZEBRA_DEBUG_KERNEL) | |
281 | zlog_debug( | |
282 | "%s: IFLA_INFO_DATA missing from VRF message: %s", | |
283 | __func__, name); | |
284 | return; | |
285 | } | |
286 | ||
287 | memset(attr, 0, sizeof attr); | |
288 | parse_rtattr_nested(attr, IFLA_VRF_MAX, linkinfo[IFLA_INFO_DATA]); | |
289 | if (!attr[IFLA_VRF_TABLE]) { | |
290 | if (IS_ZEBRA_DEBUG_KERNEL) | |
291 | zlog_debug( | |
292 | "%s: IFLA_VRF_TABLE missing from VRF message: %s", | |
293 | __func__, name); | |
294 | return; | |
1fdc9eae | 295 | } |
296 | ||
d62a17ae | 297 | nl_table_id = *(u_int32_t *)RTA_DATA(attr[IFLA_VRF_TABLE]); |
298 | ||
299 | if (h->nlmsg_type == RTM_NEWLINK) { | |
300 | if (IS_ZEBRA_DEBUG_KERNEL) | |
301 | zlog_debug("RTM_NEWLINK for VRF %s(%u) table %u", name, | |
302 | ifi->ifi_index, nl_table_id); | |
303 | ||
304 | /* | |
305 | * vrf_get is implied creation if it does not exist | |
306 | */ | |
307 | vrf = vrf_get((vrf_id_t)ifi->ifi_index, | |
308 | name); // It would create vrf | |
309 | if (!vrf) { | |
310 | zlog_err("VRF %s id %u not created", name, | |
311 | ifi->ifi_index); | |
312 | return; | |
313 | } | |
314 | ||
315 | /* Enable the created VRF. */ | |
316 | if (!vrf_enable(vrf)) { | |
317 | zlog_err("Failed to enable VRF %s id %u", name, | |
318 | ifi->ifi_index); | |
319 | return; | |
320 | } | |
321 | ||
322 | /* | |
323 | * This is the only place that we get the actual kernel table_id | |
324 | * being used. We need it to set the table_id of the routes | |
325 | * we are passing to the kernel.... And to throw some totally | |
326 | * awesome parties. that too. | |
327 | */ | |
328 | zvrf = (struct zebra_vrf *)vrf->info; | |
329 | zvrf->table_id = nl_table_id; | |
330 | } else // h->nlmsg_type == RTM_DELLINK | |
331 | { | |
332 | if (IS_ZEBRA_DEBUG_KERNEL) | |
333 | zlog_debug("RTM_DELLINK for VRF %s(%u)", name, | |
334 | ifi->ifi_index); | |
335 | ||
336 | vrf = vrf_lookup_by_id((vrf_id_t)ifi->ifi_index); | |
337 | ||
338 | if (!vrf) { | |
339 | zlog_warn("%s: vrf not found", __func__); | |
340 | return; | |
341 | } | |
342 | ||
343 | vrf_delete(vrf); | |
344 | } | |
1fdc9eae | 345 | } |
346 | ||
d62a17ae | 347 | static int get_iflink_speed(const char *ifname) |
535fe877 | 348 | { |
d62a17ae | 349 | struct ifreq ifdata; |
350 | struct ethtool_cmd ecmd; | |
351 | int sd; | |
352 | int rc; | |
353 | ||
354 | /* initialize struct */ | |
355 | memset(&ifdata, 0, sizeof(ifdata)); | |
356 | ||
357 | /* set interface name */ | |
0af35d90 | 358 | strlcpy(ifdata.ifr_name, ifname, sizeof(ifdata.ifr_name)); |
d62a17ae | 359 | |
360 | /* initialize ethtool interface */ | |
361 | memset(&ecmd, 0, sizeof(ecmd)); | |
362 | ecmd.cmd = ETHTOOL_GSET; /* ETHTOOL_GLINK */ | |
363 | ifdata.ifr_data = (__caddr_t)&ecmd; | |
364 | ||
365 | /* use ioctl to get IP address of an interface */ | |
366 | sd = socket(PF_INET, SOCK_DGRAM, IPPROTO_IP); | |
367 | if (sd < 0) { | |
bd7d0299 DS |
368 | if (IS_ZEBRA_DEBUG_KERNEL) |
369 | zlog_debug("Failure to read interface %s speed: %d %s", | |
370 | ifname, errno, safe_strerror(errno)); | |
d62a17ae | 371 | return 0; |
372 | } | |
373 | ||
374 | /* Get the current link state for the interface */ | |
375 | rc = ioctl(sd, SIOCETHTOOL, (char *)&ifdata); | |
376 | if (rc < 0) { | |
bd7d0299 DS |
377 | if (IS_ZEBRA_DEBUG_KERNEL) |
378 | zlog_debug( | |
379 | "IOCTL failure to read interface %s speed: %d %s", | |
380 | ifname, errno, safe_strerror(errno)); | |
d62a17ae | 381 | ecmd.speed_hi = 0; |
382 | ecmd.speed = 0; | |
383 | } | |
384 | ||
385 | close(sd); | |
386 | ||
387 | return (ecmd.speed_hi << 16) | ecmd.speed; | |
535fe877 DS |
388 | } |
389 | ||
dc7b3cae DS |
390 | uint32_t kernel_get_speed(struct interface *ifp) |
391 | { | |
392 | return get_iflink_speed(ifp->name); | |
393 | } | |
394 | ||
d62a17ae | 395 | static int netlink_extract_bridge_info(struct rtattr *link_data, |
396 | struct zebra_l2info_bridge *bridge_info) | |
6675513d | 397 | { |
d62a17ae | 398 | struct rtattr *attr[IFLA_BR_MAX + 1]; |
399 | ||
400 | memset(bridge_info, 0, sizeof(*bridge_info)); | |
401 | memset(attr, 0, sizeof attr); | |
402 | parse_rtattr_nested(attr, IFLA_BR_MAX, link_data); | |
403 | if (attr[IFLA_BR_VLAN_FILTERING]) | |
404 | bridge_info->vlan_aware = | |
405 | *(u_char *)RTA_DATA(attr[IFLA_BR_VLAN_FILTERING]); | |
406 | return 0; | |
6675513d | 407 | } |
408 | ||
d62a17ae | 409 | static int netlink_extract_vlan_info(struct rtattr *link_data, |
410 | struct zebra_l2info_vlan *vlan_info) | |
6675513d | 411 | { |
d62a17ae | 412 | struct rtattr *attr[IFLA_VLAN_MAX + 1]; |
413 | vlanid_t vid_in_msg; | |
414 | ||
415 | memset(vlan_info, 0, sizeof(*vlan_info)); | |
416 | memset(attr, 0, sizeof attr); | |
417 | parse_rtattr_nested(attr, IFLA_VLAN_MAX, link_data); | |
418 | if (!attr[IFLA_VLAN_ID]) { | |
419 | if (IS_ZEBRA_DEBUG_KERNEL) | |
420 | zlog_debug("IFLA_VLAN_ID missing from VLAN IF message"); | |
421 | return -1; | |
422 | } | |
423 | ||
424 | vid_in_msg = *(vlanid_t *)RTA_DATA(attr[IFLA_VLAN_ID]); | |
425 | vlan_info->vid = vid_in_msg; | |
426 | return 0; | |
6675513d | 427 | } |
428 | ||
d62a17ae | 429 | static int netlink_extract_vxlan_info(struct rtattr *link_data, |
430 | struct zebra_l2info_vxlan *vxl_info) | |
6675513d | 431 | { |
d62a17ae | 432 | struct rtattr *attr[IFLA_VXLAN_MAX + 1]; |
433 | vni_t vni_in_msg; | |
434 | struct in_addr vtep_ip_in_msg; | |
435 | ||
436 | memset(vxl_info, 0, sizeof(*vxl_info)); | |
437 | memset(attr, 0, sizeof attr); | |
438 | parse_rtattr_nested(attr, IFLA_VXLAN_MAX, link_data); | |
439 | if (!attr[IFLA_VXLAN_ID]) { | |
440 | if (IS_ZEBRA_DEBUG_KERNEL) | |
441 | zlog_debug( | |
442 | "IFLA_VXLAN_ID missing from VXLAN IF message"); | |
443 | return -1; | |
444 | } | |
445 | ||
446 | vni_in_msg = *(vni_t *)RTA_DATA(attr[IFLA_VXLAN_ID]); | |
447 | vxl_info->vni = vni_in_msg; | |
448 | if (!attr[IFLA_VXLAN_LOCAL]) { | |
449 | if (IS_ZEBRA_DEBUG_KERNEL) | |
450 | zlog_debug( | |
451 | "IFLA_VXLAN_LOCAL missing from VXLAN IF message"); | |
452 | } else { | |
453 | vtep_ip_in_msg = | |
454 | *(struct in_addr *)RTA_DATA(attr[IFLA_VXLAN_LOCAL]); | |
455 | vxl_info->vtep_ip = vtep_ip_in_msg; | |
456 | } | |
457 | ||
458 | return 0; | |
6675513d | 459 | } |
460 | ||
461 | /* | |
462 | * Extract and save L2 params (of interest) for an interface. When a | |
463 | * bridge interface is added or updated, take further actions to map | |
464 | * its members. Likewise, for VxLAN interface. | |
465 | */ | |
d62a17ae | 466 | static void netlink_interface_update_l2info(struct interface *ifp, |
467 | struct rtattr *link_data, int add) | |
6675513d | 468 | { |
d62a17ae | 469 | if (!link_data) |
470 | return; | |
471 | ||
472 | if (IS_ZEBRA_IF_BRIDGE(ifp)) { | |
473 | struct zebra_l2info_bridge bridge_info; | |
474 | ||
475 | netlink_extract_bridge_info(link_data, &bridge_info); | |
476 | zebra_l2_bridge_add_update(ifp, &bridge_info, add); | |
477 | } else if (IS_ZEBRA_IF_VLAN(ifp)) { | |
478 | struct zebra_l2info_vlan vlan_info; | |
479 | ||
480 | netlink_extract_vlan_info(link_data, &vlan_info); | |
481 | zebra_l2_vlanif_update(ifp, &vlan_info); | |
482 | } else if (IS_ZEBRA_IF_VXLAN(ifp)) { | |
483 | struct zebra_l2info_vxlan vxlan_info; | |
484 | ||
485 | netlink_extract_vxlan_info(link_data, &vxlan_info); | |
486 | zebra_l2_vxlanif_add_update(ifp, &vxlan_info, add); | |
487 | } | |
6675513d | 488 | } |
489 | ||
d62a17ae | 490 | static int netlink_bridge_interface(struct nlmsghdr *h, int len, ns_id_t ns_id, |
491 | int startup) | |
6675513d | 492 | { |
d62a17ae | 493 | char *name = NULL; |
494 | struct ifinfomsg *ifi; | |
495 | struct rtattr *tb[IFLA_MAX + 1]; | |
496 | struct interface *ifp; | |
497 | struct rtattr *aftb[IFLA_BRIDGE_MAX + 1]; | |
498 | struct { | |
499 | u_int16_t flags; | |
500 | u_int16_t vid; | |
501 | } * vinfo; | |
502 | vlanid_t access_vlan; | |
503 | ||
504 | /* Fetch name and ifindex */ | |
505 | ifi = NLMSG_DATA(h); | |
506 | memset(tb, 0, sizeof tb); | |
507 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); | |
508 | ||
509 | if (tb[IFLA_IFNAME] == NULL) | |
510 | return -1; | |
511 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
512 | ||
513 | /* The interface should already be known, if not discard. */ | |
514 | ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(ns_id), ifi->ifi_index); | |
515 | if (!ifp) { | |
516 | zlog_warn("Cannot find bridge IF %s(%u)", name, ifi->ifi_index); | |
517 | return 0; | |
518 | } | |
519 | if (!IS_ZEBRA_IF_VXLAN(ifp)) | |
520 | return 0; | |
521 | ||
522 | /* We are only interested in the access VLAN i.e., AF_SPEC */ | |
523 | if (!tb[IFLA_AF_SPEC]) | |
524 | return 0; | |
525 | ||
526 | /* There is a 1-to-1 mapping of VLAN to VxLAN - hence | |
527 | * only 1 access VLAN is accepted. | |
528 | */ | |
529 | memset(aftb, 0, sizeof aftb); | |
530 | parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, tb[IFLA_AF_SPEC]); | |
531 | if (!aftb[IFLA_BRIDGE_VLAN_INFO]) | |
532 | return 0; | |
533 | ||
534 | vinfo = RTA_DATA(aftb[IFLA_BRIDGE_VLAN_INFO]); | |
535 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_PVID)) | |
536 | return 0; | |
537 | ||
538 | access_vlan = (vlanid_t)vinfo->vid; | |
539 | if (IS_ZEBRA_DEBUG_KERNEL) | |
540 | zlog_debug("Access VLAN %u for VxLAN IF %s(%u)", access_vlan, | |
541 | name, ifi->ifi_index); | |
542 | zebra_l2_vxlanif_update_access_vlan(ifp, access_vlan); | |
543 | return 0; | |
6675513d | 544 | } |
545 | ||
1fdc9eae | 546 | /* Called from interface_lookup_netlink(). This function is only used |
547 | during bootstrap. */ | |
d62a17ae | 548 | static int netlink_interface(struct sockaddr_nl *snl, struct nlmsghdr *h, |
549 | ns_id_t ns_id, int startup) | |
1fdc9eae | 550 | { |
d62a17ae | 551 | int len; |
552 | struct ifinfomsg *ifi; | |
553 | struct rtattr *tb[IFLA_MAX + 1]; | |
554 | struct rtattr *linkinfo[IFLA_MAX + 1]; | |
555 | struct interface *ifp; | |
556 | char *name = NULL; | |
557 | char *kind = NULL; | |
48884c6b | 558 | char *desc = NULL; |
d62a17ae | 559 | char *slave_kind = NULL; |
560 | struct zebra_ns *zns; | |
561 | vrf_id_t vrf_id = VRF_DEFAULT; | |
562 | zebra_iftype_t zif_type = ZEBRA_IF_OTHER; | |
563 | zebra_slave_iftype_t zif_slave_type = ZEBRA_IF_SLAVE_NONE; | |
564 | ifindex_t bridge_ifindex = IFINDEX_INTERNAL; | |
565 | ifindex_t link_ifindex = IFINDEX_INTERNAL; | |
566 | ||
567 | zns = zebra_ns_lookup(ns_id); | |
568 | ifi = NLMSG_DATA(h); | |
569 | ||
570 | if (h->nlmsg_type != RTM_NEWLINK) | |
571 | return 0; | |
572 | ||
573 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
574 | if (len < 0) | |
575 | return -1; | |
576 | ||
577 | /* We are interested in some AF_BRIDGE notifications. */ | |
578 | if (ifi->ifi_family == AF_BRIDGE) | |
579 | return netlink_bridge_interface(h, len, ns_id, startup); | |
580 | ||
581 | /* Looking up interface name. */ | |
582 | memset(tb, 0, sizeof tb); | |
583 | memset(linkinfo, 0, sizeof linkinfo); | |
584 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); | |
1fdc9eae | 585 | |
586 | #ifdef IFLA_WIRELESS | |
d62a17ae | 587 | /* check for wireless messages to ignore */ |
588 | if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0)) { | |
589 | if (IS_ZEBRA_DEBUG_KERNEL) | |
590 | zlog_debug("%s: ignoring IFLA_WIRELESS message", | |
591 | __func__); | |
592 | return 0; | |
593 | } | |
1fdc9eae | 594 | #endif /* IFLA_WIRELESS */ |
595 | ||
d62a17ae | 596 | if (tb[IFLA_IFNAME] == NULL) |
597 | return -1; | |
598 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
1fdc9eae | 599 | |
48884c6b DS |
600 | if (tb[IFLA_IFALIAS]) |
601 | desc = (char *)RTA_DATA(tb[IFLA_IFALIAS]); | |
602 | ||
d62a17ae | 603 | if (tb[IFLA_LINKINFO]) { |
604 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]); | |
1fdc9eae | 605 | |
d62a17ae | 606 | if (linkinfo[IFLA_INFO_KIND]) |
607 | kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]); | |
1fdc9eae | 608 | |
609 | #if HAVE_DECL_IFLA_INFO_SLAVE_KIND | |
d62a17ae | 610 | if (linkinfo[IFLA_INFO_SLAVE_KIND]) |
611 | slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]); | |
1fdc9eae | 612 | #endif |
613 | ||
d62a17ae | 614 | netlink_determine_zebra_iftype(kind, &zif_type); |
615 | } | |
616 | ||
617 | /* If VRF, create the VRF structure itself. */ | |
618 | if (zif_type == ZEBRA_IF_VRF) { | |
619 | netlink_vrf_change(h, tb[IFLA_LINKINFO], name); | |
620 | vrf_id = (vrf_id_t)ifi->ifi_index; | |
621 | } | |
622 | ||
623 | if (tb[IFLA_MASTER]) { | |
624 | if (slave_kind && (strcmp(slave_kind, "vrf") == 0)) { | |
625 | zif_slave_type = ZEBRA_IF_SLAVE_VRF; | |
626 | vrf_id = *(u_int32_t *)RTA_DATA(tb[IFLA_MASTER]); | |
627 | } else if (slave_kind && (strcmp(slave_kind, "bridge") == 0)) { | |
628 | zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE; | |
629 | bridge_ifindex = | |
630 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
631 | } else | |
632 | zif_slave_type = ZEBRA_IF_SLAVE_OTHER; | |
633 | } | |
634 | ||
635 | /* If linking to another interface, note it. */ | |
636 | if (tb[IFLA_LINK]) | |
637 | link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]); | |
638 | ||
639 | /* Add interface. */ | |
bcc24579 | 640 | ifp = if_get_by_name(name, vrf_id, 0); |
d62a17ae | 641 | set_ifindex(ifp, ifi->ifi_index, zns); |
642 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
643 | if (IS_ZEBRA_IF_VRF(ifp)) | |
644 | SET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK); | |
645 | ifp->mtu6 = ifp->mtu = *(uint32_t *)RTA_DATA(tb[IFLA_MTU]); | |
646 | ifp->metric = 0; | |
647 | ifp->speed = get_iflink_speed(name); | |
648 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; | |
649 | ||
48884c6b DS |
650 | if (desc) |
651 | ifp->desc = XSTRDUP(MTYPE_TMP, desc); | |
652 | ||
d62a17ae | 653 | /* Set zebra interface type */ |
654 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); | |
655 | ||
656 | /* Update link. */ | |
657 | zebra_if_update_link(ifp, link_ifindex); | |
658 | ||
659 | /* Hardware type and address. */ | |
660 | ifp->ll_type = netlink_to_zebra_link_type(ifi->ifi_type); | |
661 | netlink_interface_update_hw_addr(tb, ifp); | |
662 | ||
663 | if_add_update(ifp); | |
664 | ||
665 | /* Extract and save L2 interface information, take additional actions. | |
666 | */ | |
667 | netlink_interface_update_l2info(ifp, linkinfo[IFLA_INFO_DATA], 1); | |
668 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp)) | |
669 | zebra_l2if_update_bridge_slave(ifp, bridge_ifindex); | |
670 | ||
671 | return 0; | |
1fdc9eae | 672 | } |
673 | ||
289602d7 | 674 | /* Request for specific interface or address information from the kernel */ |
d62a17ae | 675 | static int netlink_request_intf_addr(struct zebra_ns *zns, int family, int type, |
676 | u_int32_t filter_mask) | |
289602d7 | 677 | { |
d62a17ae | 678 | struct { |
679 | struct nlmsghdr n; | |
680 | struct ifinfomsg ifm; | |
681 | char buf[256]; | |
682 | } req; | |
683 | ||
684 | /* Form the request, specifying filter (rtattr) if needed. */ | |
685 | memset(&req, 0, sizeof(req)); | |
686 | req.n.nlmsg_type = type; | |
687 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
688 | req.ifm.ifi_family = family; | |
689 | ||
690 | /* Include filter, if specified. */ | |
691 | if (filter_mask) | |
692 | addattr32(&req.n, sizeof(req), IFLA_EXT_MASK, filter_mask); | |
693 | ||
694 | return netlink_request(&zns->netlink_cmd, &req.n); | |
289602d7 | 695 | } |
696 | ||
1fdc9eae | 697 | /* Interface lookup by netlink socket. */ |
d62a17ae | 698 | int interface_lookup_netlink(struct zebra_ns *zns) |
1fdc9eae | 699 | { |
d62a17ae | 700 | int ret; |
701 | ||
702 | /* Get interface information. */ | |
703 | ret = netlink_request_intf_addr(zns, AF_PACKET, RTM_GETLINK, 0); | |
704 | if (ret < 0) | |
705 | return ret; | |
706 | ret = netlink_parse_info(netlink_interface, &zns->netlink_cmd, zns, 0, | |
707 | 1); | |
708 | if (ret < 0) | |
709 | return ret; | |
710 | ||
711 | /* Get interface information - for bridge interfaces. */ | |
712 | ret = netlink_request_intf_addr(zns, AF_BRIDGE, RTM_GETLINK, | |
713 | RTEXT_FILTER_BRVLAN); | |
714 | if (ret < 0) | |
715 | return ret; | |
716 | ret = netlink_parse_info(netlink_interface, &zns->netlink_cmd, zns, 0, | |
717 | 0); | |
718 | if (ret < 0) | |
719 | return ret; | |
720 | ||
721 | /* Get interface information - for bridge interfaces. */ | |
722 | ret = netlink_request_intf_addr(zns, AF_BRIDGE, RTM_GETLINK, | |
723 | RTEXT_FILTER_BRVLAN); | |
724 | if (ret < 0) | |
725 | return ret; | |
726 | ret = netlink_parse_info(netlink_interface, &zns->netlink_cmd, zns, 0, | |
727 | 0); | |
728 | if (ret < 0) | |
729 | return ret; | |
730 | ||
731 | /* Get IPv4 address of the interfaces. */ | |
732 | ret = netlink_request_intf_addr(zns, AF_INET, RTM_GETADDR, 0); | |
733 | if (ret < 0) | |
734 | return ret; | |
735 | ret = netlink_parse_info(netlink_interface_addr, &zns->netlink_cmd, zns, | |
736 | 0, 1); | |
737 | if (ret < 0) | |
738 | return ret; | |
739 | ||
740 | /* Get IPv6 address of the interfaces. */ | |
741 | ret = netlink_request_intf_addr(zns, AF_INET6, RTM_GETADDR, 0); | |
742 | if (ret < 0) | |
743 | return ret; | |
744 | ret = netlink_parse_info(netlink_interface_addr, &zns->netlink_cmd, zns, | |
745 | 0, 1); | |
746 | if (ret < 0) | |
747 | return ret; | |
748 | ||
749 | return 0; | |
1fdc9eae | 750 | } |
751 | ||
e0ae31b8 DS |
752 | int kernel_interface_set_master(struct interface *master, |
753 | struct interface *slave) | |
754 | { | |
755 | struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT); | |
756 | ||
757 | struct { | |
758 | struct nlmsghdr n; | |
759 | struct ifinfomsg ifa; | |
760 | char buf[NL_PKT_BUF_SIZE]; | |
761 | } req; | |
762 | ||
763 | memset(&req, 0, sizeof req); | |
764 | ||
765 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
766 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
767 | req.n.nlmsg_type = RTM_SETLINK; | |
768 | req.n.nlmsg_pid = zns->netlink_cmd.snl.nl_pid; | |
769 | ||
770 | req.ifa.ifi_index = slave->ifindex; | |
771 | ||
772 | addattr_l(&req.n, sizeof req, IFLA_MASTER, &master->ifindex, 4); | |
773 | addattr_l(&req.n, sizeof req, IFLA_LINK, &slave->ifindex, 4); | |
774 | ||
775 | return netlink_talk(netlink_talk_filter, &req.n, &zns->netlink_cmd, zns, | |
776 | 0); | |
777 | } | |
778 | ||
1fdc9eae | 779 | /* Interface address modification. */ |
d62a17ae | 780 | static int netlink_address(int cmd, int family, struct interface *ifp, |
781 | struct connected *ifc) | |
1fdc9eae | 782 | { |
d62a17ae | 783 | int bytelen; |
784 | struct prefix *p; | |
1fdc9eae | 785 | |
d62a17ae | 786 | struct { |
787 | struct nlmsghdr n; | |
788 | struct ifaddrmsg ifa; | |
789 | char buf[NL_PKT_BUF_SIZE]; | |
790 | } req; | |
1fdc9eae | 791 | |
d62a17ae | 792 | struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT); |
1fdc9eae | 793 | |
d62a17ae | 794 | p = ifc->address; |
795 | memset(&req, 0, sizeof req - NL_PKT_BUF_SIZE); | |
1fdc9eae | 796 | |
d62a17ae | 797 | bytelen = (family == AF_INET ? 4 : 16); |
1fdc9eae | 798 | |
d62a17ae | 799 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)); |
800 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
801 | req.n.nlmsg_type = cmd; | |
802 | req.n.nlmsg_pid = zns->netlink_cmd.snl.nl_pid; | |
a55ba23f | 803 | |
d62a17ae | 804 | req.ifa.ifa_family = family; |
1fdc9eae | 805 | |
d62a17ae | 806 | req.ifa.ifa_index = ifp->ifindex; |
1fdc9eae | 807 | |
d62a17ae | 808 | addattr_l(&req.n, sizeof req, IFA_LOCAL, &p->u.prefix, bytelen); |
1fdc9eae | 809 | |
e8d19a05 DL |
810 | if (family == AF_INET) { |
811 | if (CONNECTED_PEER(ifc)) { | |
812 | p = ifc->destination; | |
60466a63 QY |
813 | addattr_l(&req.n, sizeof req, IFA_ADDRESS, &p->u.prefix, |
814 | bytelen); | |
e8d19a05 | 815 | } else if (cmd == RTM_NEWADDR && ifc->destination) { |
d62a17ae | 816 | p = ifc->destination; |
817 | addattr_l(&req.n, sizeof req, IFA_BROADCAST, | |
818 | &p->u.prefix, bytelen); | |
819 | } | |
820 | } | |
1fdc9eae | 821 | |
e8d19a05 DL |
822 | /* p is now either ifc->address or ifc->destination */ |
823 | req.ifa.ifa_prefixlen = p->prefixlen; | |
824 | ||
d62a17ae | 825 | if (CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY)) |
826 | SET_FLAG(req.ifa.ifa_flags, IFA_F_SECONDARY); | |
1fdc9eae | 827 | |
d62a17ae | 828 | if (ifc->label) |
829 | addattr_l(&req.n, sizeof req, IFA_LABEL, ifc->label, | |
830 | strlen(ifc->label) + 1); | |
1fdc9eae | 831 | |
d62a17ae | 832 | return netlink_talk(netlink_talk_filter, &req.n, &zns->netlink_cmd, zns, |
833 | 0); | |
1fdc9eae | 834 | } |
835 | ||
d62a17ae | 836 | int kernel_address_add_ipv4(struct interface *ifp, struct connected *ifc) |
1fdc9eae | 837 | { |
d62a17ae | 838 | return netlink_address(RTM_NEWADDR, AF_INET, ifp, ifc); |
1fdc9eae | 839 | } |
840 | ||
d62a17ae | 841 | int kernel_address_delete_ipv4(struct interface *ifp, struct connected *ifc) |
1fdc9eae | 842 | { |
d62a17ae | 843 | return netlink_address(RTM_DELADDR, AF_INET, ifp, ifc); |
1fdc9eae | 844 | } |
845 | ||
e86b71f1 PG |
846 | int kernel_address_add_ipv6 (struct interface *ifp, struct connected *ifc) |
847 | { | |
848 | return netlink_address (RTM_NEWADDR, AF_INET6, ifp, ifc); | |
849 | } | |
850 | ||
851 | int kernel_address_delete_ipv6 (struct interface *ifp, struct connected *ifc) | |
852 | { | |
853 | return netlink_address (RTM_DELADDR, AF_INET6, ifp, ifc); | |
854 | } | |
855 | ||
d62a17ae | 856 | int netlink_interface_addr(struct sockaddr_nl *snl, struct nlmsghdr *h, |
857 | ns_id_t ns_id, int startup) | |
1fdc9eae | 858 | { |
d62a17ae | 859 | int len; |
860 | struct ifaddrmsg *ifa; | |
861 | struct rtattr *tb[IFA_MAX + 1]; | |
862 | struct interface *ifp; | |
863 | void *addr; | |
864 | void *broad; | |
865 | u_char flags = 0; | |
866 | char *label = NULL; | |
867 | struct zebra_ns *zns; | |
868 | ||
869 | zns = zebra_ns_lookup(ns_id); | |
870 | ifa = NLMSG_DATA(h); | |
871 | ||
872 | if (ifa->ifa_family != AF_INET && ifa->ifa_family != AF_INET6) | |
873 | return 0; | |
874 | ||
875 | if (h->nlmsg_type != RTM_NEWADDR && h->nlmsg_type != RTM_DELADDR) | |
876 | return 0; | |
877 | ||
878 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifaddrmsg)); | |
879 | if (len < 0) | |
880 | return -1; | |
881 | ||
882 | memset(tb, 0, sizeof tb); | |
883 | netlink_parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), len); | |
884 | ||
885 | ifp = if_lookup_by_index_per_ns(zns, ifa->ifa_index); | |
886 | if (ifp == NULL) { | |
887 | zlog_err( | |
888 | "netlink_interface_addr can't find interface by index %d", | |
889 | ifa->ifa_index); | |
890 | return -1; | |
891 | } | |
892 | ||
893 | if (IS_ZEBRA_DEBUG_KERNEL) /* remove this line to see initial ifcfg */ | |
894 | { | |
895 | char buf[BUFSIZ]; | |
896 | zlog_debug("netlink_interface_addr %s %s flags 0x%x:", | |
897 | nl_msg_type_to_str(h->nlmsg_type), ifp->name, | |
898 | ifa->ifa_flags); | |
899 | if (tb[IFA_LOCAL]) | |
900 | zlog_debug(" IFA_LOCAL %s/%d", | |
901 | inet_ntop(ifa->ifa_family, | |
902 | RTA_DATA(tb[IFA_LOCAL]), buf, | |
903 | BUFSIZ), | |
904 | ifa->ifa_prefixlen); | |
905 | if (tb[IFA_ADDRESS]) | |
906 | zlog_debug(" IFA_ADDRESS %s/%d", | |
907 | inet_ntop(ifa->ifa_family, | |
908 | RTA_DATA(tb[IFA_ADDRESS]), buf, | |
909 | BUFSIZ), | |
910 | ifa->ifa_prefixlen); | |
911 | if (tb[IFA_BROADCAST]) | |
912 | zlog_debug(" IFA_BROADCAST %s/%d", | |
913 | inet_ntop(ifa->ifa_family, | |
914 | RTA_DATA(tb[IFA_BROADCAST]), buf, | |
915 | BUFSIZ), | |
916 | ifa->ifa_prefixlen); | |
917 | if (tb[IFA_LABEL] && strcmp(ifp->name, RTA_DATA(tb[IFA_LABEL]))) | |
918 | zlog_debug(" IFA_LABEL %s", | |
919 | (char *)RTA_DATA(tb[IFA_LABEL])); | |
920 | ||
921 | if (tb[IFA_CACHEINFO]) { | |
922 | struct ifa_cacheinfo *ci = RTA_DATA(tb[IFA_CACHEINFO]); | |
923 | zlog_debug(" IFA_CACHEINFO pref %d, valid %d", | |
924 | ci->ifa_prefered, ci->ifa_valid); | |
925 | } | |
926 | } | |
927 | ||
928 | /* logic copied from iproute2/ip/ipaddress.c:print_addrinfo() */ | |
929 | if (tb[IFA_LOCAL] == NULL) | |
930 | tb[IFA_LOCAL] = tb[IFA_ADDRESS]; | |
931 | if (tb[IFA_ADDRESS] == NULL) | |
932 | tb[IFA_ADDRESS] = tb[IFA_LOCAL]; | |
933 | ||
934 | /* local interface address */ | |
935 | addr = (tb[IFA_LOCAL] ? RTA_DATA(tb[IFA_LOCAL]) : NULL); | |
936 | ||
937 | /* is there a peer address? */ | |
938 | if (tb[IFA_ADDRESS] | |
939 | && memcmp(RTA_DATA(tb[IFA_ADDRESS]), RTA_DATA(tb[IFA_LOCAL]), | |
940 | RTA_PAYLOAD(tb[IFA_ADDRESS]))) { | |
941 | broad = RTA_DATA(tb[IFA_ADDRESS]); | |
942 | SET_FLAG(flags, ZEBRA_IFA_PEER); | |
943 | } else | |
944 | /* seeking a broadcast address */ | |
945 | broad = (tb[IFA_BROADCAST] ? RTA_DATA(tb[IFA_BROADCAST]) | |
946 | : NULL); | |
947 | ||
948 | /* addr is primary key, SOL if we don't have one */ | |
949 | if (addr == NULL) { | |
950 | zlog_debug("%s: NULL address", __func__); | |
951 | return -1; | |
952 | } | |
953 | ||
954 | /* Flags. */ | |
955 | if (ifa->ifa_flags & IFA_F_SECONDARY) | |
956 | SET_FLAG(flags, ZEBRA_IFA_SECONDARY); | |
957 | ||
958 | /* Label */ | |
959 | if (tb[IFA_LABEL]) | |
960 | label = (char *)RTA_DATA(tb[IFA_LABEL]); | |
961 | ||
962 | if (ifp && label && strcmp(ifp->name, label) == 0) | |
963 | label = NULL; | |
964 | ||
965 | /* Register interface address to the interface. */ | |
966 | if (ifa->ifa_family == AF_INET) { | |
967 | if (h->nlmsg_type == RTM_NEWADDR) | |
968 | connected_add_ipv4(ifp, flags, (struct in_addr *)addr, | |
969 | ifa->ifa_prefixlen, | |
970 | (struct in_addr *)broad, label); | |
971 | else | |
972 | connected_delete_ipv4( | |
973 | ifp, flags, (struct in_addr *)addr, | |
974 | ifa->ifa_prefixlen, (struct in_addr *)broad); | |
975 | } | |
976 | if (ifa->ifa_family == AF_INET6) { | |
977 | if (h->nlmsg_type == RTM_NEWADDR) { | |
978 | /* Only consider valid addresses; we'll not get a | |
979 | * notification from | |
980 | * the kernel till IPv6 DAD has completed, but at init | |
981 | * time, Quagga | |
982 | * does query for and will receive all addresses. | |
983 | */ | |
984 | if (!(ifa->ifa_flags | |
985 | & (IFA_F_DADFAILED | IFA_F_TENTATIVE))) | |
60466a63 QY |
986 | connected_add_ipv6(ifp, flags, |
987 | (struct in6_addr *)addr, | |
988 | ifa->ifa_prefixlen, label); | |
d62a17ae | 989 | } else |
990 | connected_delete_ipv6(ifp, (struct in6_addr *)addr, | |
608105a7 | 991 | ifa->ifa_prefixlen); |
d62a17ae | 992 | } |
993 | ||
994 | return 0; | |
1fdc9eae | 995 | } |
996 | ||
d62a17ae | 997 | int netlink_link_change(struct sockaddr_nl *snl, struct nlmsghdr *h, |
998 | ns_id_t ns_id, int startup) | |
1fdc9eae | 999 | { |
d62a17ae | 1000 | int len; |
1001 | struct ifinfomsg *ifi; | |
1002 | struct rtattr *tb[IFLA_MAX + 1]; | |
1003 | struct rtattr *linkinfo[IFLA_MAX + 1]; | |
1004 | struct interface *ifp; | |
1005 | char *name = NULL; | |
1006 | char *kind = NULL; | |
48884c6b | 1007 | char *desc = NULL; |
d62a17ae | 1008 | char *slave_kind = NULL; |
1009 | struct zebra_ns *zns; | |
1010 | vrf_id_t vrf_id = VRF_DEFAULT; | |
1011 | zebra_iftype_t zif_type = ZEBRA_IF_OTHER; | |
1012 | zebra_slave_iftype_t zif_slave_type = ZEBRA_IF_SLAVE_NONE; | |
1013 | ifindex_t bridge_ifindex = IFINDEX_INTERNAL; | |
1014 | ifindex_t link_ifindex = IFINDEX_INTERNAL; | |
1015 | ||
1016 | ||
1017 | zns = zebra_ns_lookup(ns_id); | |
1018 | ifi = NLMSG_DATA(h); | |
1019 | ||
1020 | if (!(h->nlmsg_type == RTM_NEWLINK || h->nlmsg_type == RTM_DELLINK)) { | |
1021 | /* If this is not link add/delete message so print warning. */ | |
1022 | zlog_warn("netlink_link_change: wrong kernel message %d", | |
1023 | h->nlmsg_type); | |
1024 | return 0; | |
1025 | } | |
1026 | ||
1027 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
1028 | if (len < 0) | |
1029 | return -1; | |
1030 | ||
1031 | /* We are interested in some AF_BRIDGE notifications. */ | |
1032 | if (ifi->ifi_family == AF_BRIDGE) | |
1033 | return netlink_bridge_interface(h, len, ns_id, startup); | |
1034 | ||
1035 | /* Looking up interface name. */ | |
1036 | memset(tb, 0, sizeof tb); | |
1037 | memset(linkinfo, 0, sizeof linkinfo); | |
1038 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); | |
1fdc9eae | 1039 | |
1040 | #ifdef IFLA_WIRELESS | |
d62a17ae | 1041 | /* check for wireless messages to ignore */ |
1042 | if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0)) { | |
1043 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1044 | zlog_debug("%s: ignoring IFLA_WIRELESS message", | |
1045 | __func__); | |
1046 | return 0; | |
1047 | } | |
1fdc9eae | 1048 | #endif /* IFLA_WIRELESS */ |
1049 | ||
d62a17ae | 1050 | if (tb[IFLA_IFNAME] == NULL) |
1051 | return -1; | |
1052 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
1fdc9eae | 1053 | |
d62a17ae | 1054 | if (tb[IFLA_LINKINFO]) { |
1055 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]); | |
1fdc9eae | 1056 | |
d62a17ae | 1057 | if (linkinfo[IFLA_INFO_KIND]) |
1058 | kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]); | |
1fdc9eae | 1059 | |
1060 | #if HAVE_DECL_IFLA_INFO_SLAVE_KIND | |
d62a17ae | 1061 | if (linkinfo[IFLA_INFO_SLAVE_KIND]) |
1062 | slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]); | |
1fdc9eae | 1063 | #endif |
1064 | ||
d62a17ae | 1065 | netlink_determine_zebra_iftype(kind, &zif_type); |
1066 | } | |
6675513d | 1067 | |
d62a17ae | 1068 | /* If linking to another interface, note it. */ |
1069 | if (tb[IFLA_LINK]) | |
1070 | link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]); | |
1fdc9eae | 1071 | |
48884c6b DS |
1072 | if (tb[IFLA_IFALIAS]) { |
1073 | desc = (char *)RTA_DATA(tb[IFLA_IFALIAS]); | |
1074 | } | |
1075 | ||
d62a17ae | 1076 | /* If VRF, create or update the VRF structure itself. */ |
1077 | if (zif_type == ZEBRA_IF_VRF) { | |
1078 | netlink_vrf_change(h, tb[IFLA_LINKINFO], name); | |
1079 | vrf_id = (vrf_id_t)ifi->ifi_index; | |
1080 | } | |
1fdc9eae | 1081 | |
d62a17ae | 1082 | /* See if interface is present. */ |
1083 | ifp = if_lookup_by_name_per_ns(zns, name); | |
1084 | ||
48884c6b DS |
1085 | if (ifp) { |
1086 | if (ifp->desc) | |
1087 | XFREE(MTYPE_TMP, ifp->desc); | |
1088 | if (desc) | |
1089 | ifp->desc = XSTRDUP(MTYPE_TMP, desc); | |
1090 | } | |
1091 | ||
d62a17ae | 1092 | if (h->nlmsg_type == RTM_NEWLINK) { |
1093 | if (tb[IFLA_MASTER]) { | |
1094 | if (slave_kind && (strcmp(slave_kind, "vrf") == 0)) { | |
1095 | zif_slave_type = ZEBRA_IF_SLAVE_VRF; | |
1096 | vrf_id = | |
1097 | *(u_int32_t *)RTA_DATA(tb[IFLA_MASTER]); | |
1098 | } else if (slave_kind | |
1099 | && (strcmp(slave_kind, "bridge") == 0)) { | |
1100 | zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE; | |
1101 | bridge_ifindex = | |
1102 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
1103 | } else | |
1104 | zif_slave_type = ZEBRA_IF_SLAVE_OTHER; | |
1105 | } | |
1106 | ||
1107 | if (ifp == NULL | |
1108 | || !CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE)) { | |
1109 | /* Add interface notification from kernel */ | |
1110 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1111 | zlog_debug( | |
1112 | "RTM_NEWLINK ADD for %s(%u) vrf_id %u type %d " | |
1113 | "sl_type %d master %u flags 0x%x", | |
1114 | name, ifi->ifi_index, vrf_id, zif_type, | |
1115 | zif_slave_type, bridge_ifindex, | |
1116 | ifi->ifi_flags); | |
1117 | ||
1118 | if (ifp == NULL) { | |
1119 | /* unknown interface */ | |
bcc24579 | 1120 | ifp = if_get_by_name(name, vrf_id, 0); |
d62a17ae | 1121 | } else { |
1122 | /* pre-configured interface, learnt now */ | |
1123 | if (ifp->vrf_id != vrf_id) | |
1124 | if_update_to_new_vrf(ifp, vrf_id); | |
1125 | } | |
1126 | ||
1127 | /* Update interface information. */ | |
1128 | set_ifindex(ifp, ifi->ifi_index, zns); | |
1129 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
1130 | if (IS_ZEBRA_IF_VRF(ifp)) | |
1131 | SET_FLAG(ifp->status, | |
1132 | ZEBRA_INTERFACE_VRF_LOOPBACK); | |
1133 | ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]); | |
1134 | ifp->metric = 0; | |
1135 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; | |
1136 | ||
1137 | /* Set interface type */ | |
1138 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); | |
1139 | ||
1140 | /* Update link. */ | |
1141 | zebra_if_update_link(ifp, link_ifindex); | |
1142 | ||
1143 | netlink_interface_update_hw_addr(tb, ifp); | |
1144 | ||
1145 | /* Inform clients, install any configured addresses. */ | |
1146 | if_add_update(ifp); | |
1147 | ||
1148 | /* Extract and save L2 interface information, take | |
1149 | * additional actions. */ | |
1150 | netlink_interface_update_l2info( | |
1151 | ifp, linkinfo[IFLA_INFO_DATA], 1); | |
1152 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp)) | |
1153 | zebra_l2if_update_bridge_slave(ifp, | |
1154 | bridge_ifindex); | |
1155 | } else if (ifp->vrf_id != vrf_id) { | |
1156 | /* VRF change for an interface. */ | |
1157 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1158 | zlog_debug( | |
1159 | "RTM_NEWLINK vrf-change for %s(%u) " | |
1160 | "vrf_id %u -> %u flags 0x%x", | |
1161 | name, ifp->ifindex, ifp->vrf_id, vrf_id, | |
1162 | ifi->ifi_flags); | |
1163 | ||
1164 | if_handle_vrf_change(ifp, vrf_id); | |
1165 | } else { | |
1166 | int was_bridge_slave; | |
1167 | ||
1168 | /* Interface update. */ | |
1169 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1170 | zlog_debug( | |
1171 | "RTM_NEWLINK update for %s(%u) " | |
1172 | "sl_type %d master %u flags 0x%x", | |
1173 | name, ifp->ifindex, zif_slave_type, | |
1174 | bridge_ifindex, ifi->ifi_flags); | |
1175 | ||
1176 | set_ifindex(ifp, ifi->ifi_index, zns); | |
1177 | ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]); | |
1178 | ifp->metric = 0; | |
1179 | ||
1180 | /* Update interface type - NOTE: Only slave_type can | |
1181 | * change. */ | |
1182 | was_bridge_slave = IS_ZEBRA_IF_BRIDGE_SLAVE(ifp); | |
1183 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); | |
1184 | ||
1185 | netlink_interface_update_hw_addr(tb, ifp); | |
1186 | ||
1187 | if (if_is_no_ptm_operative(ifp)) { | |
1188 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
1189 | if (!if_is_no_ptm_operative(ifp)) { | |
1190 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1191 | zlog_debug( | |
1192 | "Intf %s(%u) has gone DOWN", | |
1193 | name, ifp->ifindex); | |
1194 | if_down(ifp); | |
1195 | } else if (if_is_operative(ifp)) { | |
1196 | /* Must notify client daemons of new | |
1197 | * interface status. */ | |
1198 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1199 | zlog_debug( | |
1200 | "Intf %s(%u) PTM up, notifying clients", | |
1201 | name, ifp->ifindex); | |
1202 | zebra_interface_up_update(ifp); | |
1203 | } | |
1204 | } else { | |
1205 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
1206 | if (if_is_operative(ifp)) { | |
1207 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1208 | zlog_debug( | |
1209 | "Intf %s(%u) has come UP", | |
1210 | name, ifp->ifindex); | |
1211 | if_up(ifp); | |
1212 | } | |
1213 | } | |
1214 | ||
1215 | /* Extract and save L2 interface information, take | |
1216 | * additional actions. */ | |
1217 | netlink_interface_update_l2info( | |
1218 | ifp, linkinfo[IFLA_INFO_DATA], 0); | |
1219 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp) || was_bridge_slave) | |
1220 | zebra_l2if_update_bridge_slave(ifp, | |
1221 | bridge_ifindex); | |
1222 | } | |
1223 | } else { | |
1224 | /* Delete interface notification from kernel */ | |
1225 | if (ifp == NULL) { | |
1226 | zlog_warn("RTM_DELLINK for unknown interface %s(%u)", | |
1227 | name, ifi->ifi_index); | |
1228 | return 0; | |
1229 | } | |
1230 | ||
1231 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1232 | zlog_debug("RTM_DELLINK for %s(%u)", name, | |
1233 | ifp->ifindex); | |
1234 | ||
1235 | UNSET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK); | |
1236 | ||
1237 | /* Special handling for bridge or VxLAN interfaces. */ | |
1238 | if (IS_ZEBRA_IF_BRIDGE(ifp)) | |
1239 | zebra_l2_bridge_del(ifp); | |
1240 | else if (IS_ZEBRA_IF_VXLAN(ifp)) | |
1241 | zebra_l2_vxlanif_del(ifp); | |
1242 | ||
1243 | if (!IS_ZEBRA_IF_VRF(ifp)) | |
1244 | if_delete_update(ifp); | |
1fdc9eae | 1245 | } |
1246 | ||
d62a17ae | 1247 | return 0; |
1fdc9eae | 1248 | } |
718e3744 | 1249 | |
1250 | /* Interface information read by netlink. */ | |
d62a17ae | 1251 | void interface_list(struct zebra_ns *zns) |
718e3744 | 1252 | { |
d62a17ae | 1253 | interface_lookup_netlink(zns); |
718e3744 | 1254 | } |
ddfeb486 DL |
1255 | |
1256 | #endif /* GNU_LINUX */ |