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Commit | Line | Data |
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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 | ||
ba85366a | 33 | #include <netinet/if_ether.h> |
6675513d | 34 | #include <linux/if_bridge.h> |
ba777396 | 35 | #include <linux/if_link.h> |
1fdc9eae | 36 | #include <net/if_arp.h> |
535fe877 DS |
37 | #include <linux/sockios.h> |
38 | #include <linux/ethtool.h> | |
1fdc9eae | 39 | |
40 | #include "linklist.h" | |
41 | #include "if.h" | |
42 | #include "log.h" | |
43 | #include "prefix.h" | |
44 | #include "connected.h" | |
45 | #include "table.h" | |
46 | #include "memory.h" | |
47 | #include "zebra_memory.h" | |
48 | #include "rib.h" | |
49 | #include "thread.h" | |
50 | #include "privs.h" | |
51 | #include "nexthop.h" | |
52 | #include "vrf.h" | |
7922fc65 | 53 | #include "vrf_int.h" |
1fdc9eae | 54 | #include "mpls.h" |
174482ef | 55 | #include "lib_errors.h" |
718e3744 | 56 | |
5e6a74d8 | 57 | #include "vty.h" |
7dbeea9d | 58 | #include "zebra/zserv.h" |
1fdc9eae | 59 | #include "zebra/zebra_ns.h" |
60 | #include "zebra/zebra_vrf.h" | |
61 | #include "zebra/rt.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" | |
d9f5b2f5 | 69 | #include "zebra/rt_netlink.h" |
1fdc9eae | 70 | #include "zebra/if_netlink.h" |
9df414fe | 71 | #include "zebra/zebra_errors.h" |
97c4e1d0 | 72 | #include "zebra/zebra_vxlan.h" |
42b56639 | 73 | #include "zebra/zebra_evpn_mh.h" |
1fdc9eae | 74 | |
0268f30e | 75 | extern struct zebra_privs_t zserv_privs; |
1fdc9eae | 76 | |
77 | /* Note: on netlink systems, there should be a 1-to-1 mapping between interface | |
78 | names and ifindex values. */ | |
d62a17ae | 79 | static void set_ifindex(struct interface *ifp, ifindex_t ifi_index, |
80 | struct zebra_ns *zns) | |
1fdc9eae | 81 | { |
d62a17ae | 82 | struct interface *oifp; |
83 | ||
84 | if (((oifp = if_lookup_by_index_per_ns(zns, ifi_index)) != NULL) | |
85 | && (oifp != ifp)) { | |
86 | if (ifi_index == IFINDEX_INTERNAL) | |
af4c2728 | 87 | flog_err( |
450971aa | 88 | EC_LIB_INTERFACE, |
4d43f68a | 89 | "Netlink is setting interface %s ifindex to reserved internal value %u", |
d62a17ae | 90 | ifp->name, ifi_index); |
91 | else { | |
92 | if (IS_ZEBRA_DEBUG_KERNEL) | |
93 | zlog_debug( | |
94 | "interface index %d was renamed from %s to %s", | |
95 | ifi_index, oifp->name, ifp->name); | |
96 | if (if_is_up(oifp)) | |
af4c2728 | 97 | flog_err( |
450971aa | 98 | EC_LIB_INTERFACE, |
4d43f68a | 99 | "interface rename detected on up interface: index %d was renamed from %s to %s, results are uncertain!", |
d62a17ae | 100 | ifi_index, oifp->name, ifp->name); |
101 | if_delete_update(oifp); | |
102 | } | |
103 | } | |
ff880b78 | 104 | if_set_index(ifp, ifi_index); |
1fdc9eae | 105 | } |
106 | ||
107 | /* Utility function to parse hardware link-layer address and update ifp */ | |
d62a17ae | 108 | static void netlink_interface_update_hw_addr(struct rtattr **tb, |
109 | struct interface *ifp) | |
1fdc9eae | 110 | { |
d62a17ae | 111 | int i; |
112 | ||
113 | if (tb[IFLA_ADDRESS]) { | |
114 | int hw_addr_len; | |
115 | ||
116 | hw_addr_len = RTA_PAYLOAD(tb[IFLA_ADDRESS]); | |
117 | ||
118 | if (hw_addr_len > INTERFACE_HWADDR_MAX) | |
9df414fe QY |
119 | zlog_debug("Hardware address is too large: %d", |
120 | hw_addr_len); | |
d62a17ae | 121 | else { |
122 | ifp->hw_addr_len = hw_addr_len; | |
123 | memcpy(ifp->hw_addr, RTA_DATA(tb[IFLA_ADDRESS]), | |
124 | hw_addr_len); | |
125 | ||
126 | for (i = 0; i < hw_addr_len; i++) | |
127 | if (ifp->hw_addr[i] != 0) | |
128 | break; | |
129 | ||
130 | if (i == hw_addr_len) | |
131 | ifp->hw_addr_len = 0; | |
132 | else | |
133 | ifp->hw_addr_len = hw_addr_len; | |
134 | } | |
135 | } | |
1fdc9eae | 136 | } |
137 | ||
d62a17ae | 138 | static enum zebra_link_type netlink_to_zebra_link_type(unsigned int hwt) |
1fdc9eae | 139 | { |
d62a17ae | 140 | switch (hwt) { |
141 | case ARPHRD_ETHER: | |
142 | return ZEBRA_LLT_ETHER; | |
143 | case ARPHRD_EETHER: | |
144 | return ZEBRA_LLT_EETHER; | |
145 | case ARPHRD_AX25: | |
146 | return ZEBRA_LLT_AX25; | |
147 | case ARPHRD_PRONET: | |
148 | return ZEBRA_LLT_PRONET; | |
149 | case ARPHRD_IEEE802: | |
150 | return ZEBRA_LLT_IEEE802; | |
151 | case ARPHRD_ARCNET: | |
152 | return ZEBRA_LLT_ARCNET; | |
153 | case ARPHRD_APPLETLK: | |
154 | return ZEBRA_LLT_APPLETLK; | |
155 | case ARPHRD_DLCI: | |
156 | return ZEBRA_LLT_DLCI; | |
157 | case ARPHRD_ATM: | |
158 | return ZEBRA_LLT_ATM; | |
159 | case ARPHRD_METRICOM: | |
160 | return ZEBRA_LLT_METRICOM; | |
161 | case ARPHRD_IEEE1394: | |
162 | return ZEBRA_LLT_IEEE1394; | |
163 | case ARPHRD_EUI64: | |
164 | return ZEBRA_LLT_EUI64; | |
165 | case ARPHRD_INFINIBAND: | |
166 | return ZEBRA_LLT_INFINIBAND; | |
167 | case ARPHRD_SLIP: | |
168 | return ZEBRA_LLT_SLIP; | |
169 | case ARPHRD_CSLIP: | |
170 | return ZEBRA_LLT_CSLIP; | |
171 | case ARPHRD_SLIP6: | |
172 | return ZEBRA_LLT_SLIP6; | |
173 | case ARPHRD_CSLIP6: | |
174 | return ZEBRA_LLT_CSLIP6; | |
175 | case ARPHRD_RSRVD: | |
176 | return ZEBRA_LLT_RSRVD; | |
177 | case ARPHRD_ADAPT: | |
178 | return ZEBRA_LLT_ADAPT; | |
179 | case ARPHRD_ROSE: | |
180 | return ZEBRA_LLT_ROSE; | |
181 | case ARPHRD_X25: | |
182 | return ZEBRA_LLT_X25; | |
183 | case ARPHRD_PPP: | |
184 | return ZEBRA_LLT_PPP; | |
185 | case ARPHRD_CISCO: | |
186 | return ZEBRA_LLT_CHDLC; | |
187 | case ARPHRD_LAPB: | |
188 | return ZEBRA_LLT_LAPB; | |
189 | case ARPHRD_RAWHDLC: | |
190 | return ZEBRA_LLT_RAWHDLC; | |
191 | case ARPHRD_TUNNEL: | |
192 | return ZEBRA_LLT_IPIP; | |
193 | case ARPHRD_TUNNEL6: | |
194 | return ZEBRA_LLT_IPIP6; | |
195 | case ARPHRD_FRAD: | |
196 | return ZEBRA_LLT_FRAD; | |
197 | case ARPHRD_SKIP: | |
198 | return ZEBRA_LLT_SKIP; | |
199 | case ARPHRD_LOOPBACK: | |
200 | return ZEBRA_LLT_LOOPBACK; | |
201 | case ARPHRD_LOCALTLK: | |
202 | return ZEBRA_LLT_LOCALTLK; | |
203 | case ARPHRD_FDDI: | |
204 | return ZEBRA_LLT_FDDI; | |
205 | case ARPHRD_SIT: | |
206 | return ZEBRA_LLT_SIT; | |
207 | case ARPHRD_IPDDP: | |
208 | return ZEBRA_LLT_IPDDP; | |
209 | case ARPHRD_IPGRE: | |
210 | return ZEBRA_LLT_IPGRE; | |
211 | case ARPHRD_PIMREG: | |
212 | return ZEBRA_LLT_PIMREG; | |
213 | case ARPHRD_HIPPI: | |
214 | return ZEBRA_LLT_HIPPI; | |
215 | case ARPHRD_ECONET: | |
216 | return ZEBRA_LLT_ECONET; | |
217 | case ARPHRD_IRDA: | |
218 | return ZEBRA_LLT_IRDA; | |
219 | case ARPHRD_FCPP: | |
220 | return ZEBRA_LLT_FCPP; | |
221 | case ARPHRD_FCAL: | |
222 | return ZEBRA_LLT_FCAL; | |
223 | case ARPHRD_FCPL: | |
224 | return ZEBRA_LLT_FCPL; | |
225 | case ARPHRD_FCFABRIC: | |
226 | return ZEBRA_LLT_FCFABRIC; | |
227 | case ARPHRD_IEEE802_TR: | |
228 | return ZEBRA_LLT_IEEE802_TR; | |
229 | case ARPHRD_IEEE80211: | |
230 | return ZEBRA_LLT_IEEE80211; | |
4268e09e | 231 | #ifdef ARPHRD_IEEE802154 |
d62a17ae | 232 | case ARPHRD_IEEE802154: |
233 | return ZEBRA_LLT_IEEE802154; | |
4268e09e | 234 | #endif |
1fdc9eae | 235 | #ifdef ARPHRD_IP6GRE |
d62a17ae | 236 | case ARPHRD_IP6GRE: |
237 | return ZEBRA_LLT_IP6GRE; | |
1fdc9eae | 238 | #endif |
239 | #ifdef ARPHRD_IEEE802154_PHY | |
d62a17ae | 240 | case ARPHRD_IEEE802154_PHY: |
241 | return ZEBRA_LLT_IEEE802154_PHY; | |
1fdc9eae | 242 | #endif |
243 | ||
d62a17ae | 244 | default: |
245 | return ZEBRA_LLT_UNKNOWN; | |
246 | } | |
1fdc9eae | 247 | } |
248 | ||
42b56639 AK |
249 | static inline void zebra_if_set_ziftype(struct interface *ifp, |
250 | zebra_iftype_t zif_type, | |
251 | zebra_slave_iftype_t zif_slave_type) | |
252 | { | |
253 | struct zebra_if *zif; | |
254 | ||
255 | zif = (struct zebra_if *)ifp->info; | |
256 | zif->zif_slave_type = zif_slave_type; | |
257 | ||
258 | if (zif->zif_type != zif_type) { | |
259 | zif->zif_type = zif_type; | |
260 | /* If the if_type has been set to bond initialize ES info | |
261 | * against it. XXX - note that we don't handle the case where | |
262 | * a zif changes from bond to non-bond; it is really | |
263 | * an unexpected/error condition. | |
264 | */ | |
265 | zebra_evpn_if_init(zif); | |
266 | } | |
267 | } | |
268 | ||
b9368db9 DD |
269 | static void netlink_determine_zebra_iftype(const char *kind, |
270 | zebra_iftype_t *zif_type) | |
6675513d | 271 | { |
d62a17ae | 272 | *zif_type = ZEBRA_IF_OTHER; |
273 | ||
274 | if (!kind) | |
275 | return; | |
276 | ||
277 | if (strcmp(kind, "vrf") == 0) | |
278 | *zif_type = ZEBRA_IF_VRF; | |
279 | else if (strcmp(kind, "bridge") == 0) | |
280 | *zif_type = ZEBRA_IF_BRIDGE; | |
281 | else if (strcmp(kind, "vlan") == 0) | |
282 | *zif_type = ZEBRA_IF_VLAN; | |
283 | else if (strcmp(kind, "vxlan") == 0) | |
284 | *zif_type = ZEBRA_IF_VXLAN; | |
1a98c087 MK |
285 | else if (strcmp(kind, "macvlan") == 0) |
286 | *zif_type = ZEBRA_IF_MACVLAN; | |
0e4864ea PG |
287 | else if (strcmp(kind, "veth") == 0) |
288 | *zif_type = ZEBRA_IF_VETH; | |
b9368db9 DD |
289 | else if (strcmp(kind, "bond") == 0) |
290 | *zif_type = ZEBRA_IF_BOND; | |
291 | else if (strcmp(kind, "bond_slave") == 0) | |
292 | *zif_type = ZEBRA_IF_BOND_SLAVE; | |
6675513d | 293 | } |
52d8f0d8 | 294 | |
d62a17ae | 295 | #define parse_rtattr_nested(tb, max, rta) \ |
296 | netlink_parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)) | |
1fdc9eae | 297 | |
d62a17ae | 298 | static void netlink_vrf_change(struct nlmsghdr *h, struct rtattr *tb, |
5e031198 | 299 | uint32_t ns_id, const char *name) |
1fdc9eae | 300 | { |
d62a17ae | 301 | struct ifinfomsg *ifi; |
302 | struct rtattr *linkinfo[IFLA_INFO_MAX + 1]; | |
303 | struct rtattr *attr[IFLA_VRF_MAX + 1]; | |
75d26fb3 | 304 | struct vrf *vrf = NULL; |
d62a17ae | 305 | struct zebra_vrf *zvrf; |
d7c0a89a | 306 | uint32_t nl_table_id; |
d62a17ae | 307 | |
308 | ifi = NLMSG_DATA(h); | |
309 | ||
0d6f7fd6 | 310 | memset(linkinfo, 0, sizeof(linkinfo)); |
d62a17ae | 311 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb); |
312 | ||
313 | if (!linkinfo[IFLA_INFO_DATA]) { | |
314 | if (IS_ZEBRA_DEBUG_KERNEL) | |
315 | zlog_debug( | |
316 | "%s: IFLA_INFO_DATA missing from VRF message: %s", | |
317 | __func__, name); | |
318 | return; | |
319 | } | |
320 | ||
0d6f7fd6 | 321 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 322 | parse_rtattr_nested(attr, IFLA_VRF_MAX, linkinfo[IFLA_INFO_DATA]); |
323 | if (!attr[IFLA_VRF_TABLE]) { | |
324 | if (IS_ZEBRA_DEBUG_KERNEL) | |
325 | zlog_debug( | |
326 | "%s: IFLA_VRF_TABLE missing from VRF message: %s", | |
327 | __func__, name); | |
328 | return; | |
1fdc9eae | 329 | } |
330 | ||
d7c0a89a | 331 | nl_table_id = *(uint32_t *)RTA_DATA(attr[IFLA_VRF_TABLE]); |
d62a17ae | 332 | |
333 | if (h->nlmsg_type == RTM_NEWLINK) { | |
334 | if (IS_ZEBRA_DEBUG_KERNEL) | |
335 | zlog_debug("RTM_NEWLINK for VRF %s(%u) table %u", name, | |
336 | ifi->ifi_index, nl_table_id); | |
337 | ||
2e86d16d RW |
338 | if (!vrf_lookup_by_id((vrf_id_t)ifi->ifi_index)) { |
339 | vrf_id_t exist_id; | |
5e031198 | 340 | |
2e86d16d RW |
341 | exist_id = vrf_lookup_by_table(nl_table_id, ns_id); |
342 | if (exist_id != VRF_DEFAULT) { | |
343 | vrf = vrf_lookup_by_id(exist_id); | |
344 | ||
345 | flog_err( | |
346 | EC_ZEBRA_VRF_MISCONFIGURED, | |
347 | "VRF %s id %u table id overlaps existing vrf %s, misconfiguration exiting", | |
348 | name, ifi->ifi_index, vrf->name); | |
349 | exit(-1); | |
350 | } | |
5e031198 | 351 | } |
2e86d16d | 352 | |
75d26fb3 | 353 | vrf = vrf_update((vrf_id_t)ifi->ifi_index, name); |
d62a17ae | 354 | if (!vrf) { |
450971aa | 355 | flog_err(EC_LIB_INTERFACE, "VRF %s id %u not created", |
1c50c1c0 | 356 | name, ifi->ifi_index); |
d62a17ae | 357 | return; |
358 | } | |
359 | ||
d62a17ae | 360 | /* |
361 | * This is the only place that we get the actual kernel table_id | |
362 | * being used. We need it to set the table_id of the routes | |
363 | * we are passing to the kernel.... And to throw some totally | |
364 | * awesome parties. that too. | |
593406a1 DS |
365 | * |
366 | * At this point we *must* have a zvrf because the vrf_create | |
367 | * callback creates one. We *must* set the table id | |
368 | * before the vrf_enable because of( at the very least ) | |
369 | * static routes being delayed for installation until | |
370 | * during the vrf_enable callbacks. | |
d62a17ae | 371 | */ |
372 | zvrf = (struct zebra_vrf *)vrf->info; | |
373 | zvrf->table_id = nl_table_id; | |
593406a1 DS |
374 | |
375 | /* Enable the created VRF. */ | |
376 | if (!vrf_enable(vrf)) { | |
450971aa | 377 | flog_err(EC_LIB_INTERFACE, |
1c50c1c0 QY |
378 | "Failed to enable VRF %s id %u", name, |
379 | ifi->ifi_index); | |
593406a1 DS |
380 | return; |
381 | } | |
382 | ||
d62a17ae | 383 | } else // h->nlmsg_type == RTM_DELLINK |
384 | { | |
385 | if (IS_ZEBRA_DEBUG_KERNEL) | |
386 | zlog_debug("RTM_DELLINK for VRF %s(%u)", name, | |
387 | ifi->ifi_index); | |
388 | ||
389 | vrf = vrf_lookup_by_id((vrf_id_t)ifi->ifi_index); | |
390 | ||
391 | if (!vrf) { | |
e914ccbe | 392 | flog_warn(EC_ZEBRA_VRF_NOT_FOUND, "%s: vrf not found", |
9df414fe | 393 | __func__); |
d62a17ae | 394 | return; |
395 | } | |
396 | ||
397 | vrf_delete(vrf); | |
398 | } | |
1fdc9eae | 399 | } |
400 | ||
67188ca2 | 401 | static uint32_t get_iflink_speed(struct interface *interface, int *error) |
535fe877 | 402 | { |
d62a17ae | 403 | struct ifreq ifdata; |
404 | struct ethtool_cmd ecmd; | |
405 | int sd; | |
406 | int rc; | |
0268f30e | 407 | const char *ifname = interface->name; |
d62a17ae | 408 | |
594c2878 JF |
409 | if (error) |
410 | *error = 0; | |
d62a17ae | 411 | /* initialize struct */ |
412 | memset(&ifdata, 0, sizeof(ifdata)); | |
413 | ||
414 | /* set interface name */ | |
0af35d90 | 415 | strlcpy(ifdata.ifr_name, ifname, sizeof(ifdata.ifr_name)); |
d62a17ae | 416 | |
417 | /* initialize ethtool interface */ | |
418 | memset(&ecmd, 0, sizeof(ecmd)); | |
419 | ecmd.cmd = ETHTOOL_GSET; /* ETHTOOL_GLINK */ | |
ba85366a | 420 | ifdata.ifr_data = (caddr_t)&ecmd; |
d62a17ae | 421 | |
422 | /* use ioctl to get IP address of an interface */ | |
0cf6db21 | 423 | frr_with_privs(&zserv_privs) { |
01b9e3fd | 424 | sd = vrf_socket(PF_INET, SOCK_DGRAM, IPPROTO_IP, |
a36898e7 | 425 | interface->vrf_id, |
01b9e3fd DL |
426 | NULL); |
427 | if (sd < 0) { | |
428 | if (IS_ZEBRA_DEBUG_KERNEL) | |
429 | zlog_debug("Failure to read interface %s speed: %d %s", | |
430 | ifname, errno, safe_strerror(errno)); | |
594c2878 JF |
431 | /* no vrf socket creation may probably mean vrf issue */ |
432 | if (error) | |
433 | *error = -1; | |
01b9e3fd DL |
434 | return 0; |
435 | } | |
d62a17ae | 436 | /* Get the current link state for the interface */ |
a36898e7 | 437 | rc = vrf_ioctl(interface->vrf_id, sd, SIOCETHTOOL, |
633fc9b1 | 438 | (char *)&ifdata); |
01b9e3fd | 439 | } |
d62a17ae | 440 | if (rc < 0) { |
f767cee4 | 441 | if (errno != EOPNOTSUPP && IS_ZEBRA_DEBUG_KERNEL) |
bd7d0299 DS |
442 | zlog_debug( |
443 | "IOCTL failure to read interface %s speed: %d %s", | |
444 | ifname, errno, safe_strerror(errno)); | |
594c2878 JF |
445 | /* no device means interface unreachable */ |
446 | if (errno == ENODEV && error) | |
447 | *error = -1; | |
d62a17ae | 448 | ecmd.speed_hi = 0; |
449 | ecmd.speed = 0; | |
450 | } | |
451 | ||
452 | close(sd); | |
453 | ||
67188ca2 | 454 | return ((uint32_t)ecmd.speed_hi << 16) | ecmd.speed; |
535fe877 DS |
455 | } |
456 | ||
594c2878 | 457 | uint32_t kernel_get_speed(struct interface *ifp, int *error) |
dc7b3cae | 458 | { |
594c2878 | 459 | return get_iflink_speed(ifp, error); |
dc7b3cae DS |
460 | } |
461 | ||
d62a17ae | 462 | static int netlink_extract_bridge_info(struct rtattr *link_data, |
463 | struct zebra_l2info_bridge *bridge_info) | |
6675513d | 464 | { |
d62a17ae | 465 | struct rtattr *attr[IFLA_BR_MAX + 1]; |
466 | ||
467 | memset(bridge_info, 0, sizeof(*bridge_info)); | |
0d6f7fd6 | 468 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 469 | parse_rtattr_nested(attr, IFLA_BR_MAX, link_data); |
470 | if (attr[IFLA_BR_VLAN_FILTERING]) | |
471 | bridge_info->vlan_aware = | |
d7c0a89a | 472 | *(uint8_t *)RTA_DATA(attr[IFLA_BR_VLAN_FILTERING]); |
d62a17ae | 473 | return 0; |
6675513d | 474 | } |
475 | ||
d62a17ae | 476 | static int netlink_extract_vlan_info(struct rtattr *link_data, |
477 | struct zebra_l2info_vlan *vlan_info) | |
6675513d | 478 | { |
d62a17ae | 479 | struct rtattr *attr[IFLA_VLAN_MAX + 1]; |
480 | vlanid_t vid_in_msg; | |
481 | ||
482 | memset(vlan_info, 0, sizeof(*vlan_info)); | |
0d6f7fd6 | 483 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 484 | parse_rtattr_nested(attr, IFLA_VLAN_MAX, link_data); |
485 | if (!attr[IFLA_VLAN_ID]) { | |
486 | if (IS_ZEBRA_DEBUG_KERNEL) | |
487 | zlog_debug("IFLA_VLAN_ID missing from VLAN IF message"); | |
488 | return -1; | |
489 | } | |
490 | ||
491 | vid_in_msg = *(vlanid_t *)RTA_DATA(attr[IFLA_VLAN_ID]); | |
492 | vlan_info->vid = vid_in_msg; | |
493 | return 0; | |
6675513d | 494 | } |
495 | ||
d62a17ae | 496 | static int netlink_extract_vxlan_info(struct rtattr *link_data, |
497 | struct zebra_l2info_vxlan *vxl_info) | |
6675513d | 498 | { |
d62a17ae | 499 | struct rtattr *attr[IFLA_VXLAN_MAX + 1]; |
500 | vni_t vni_in_msg; | |
501 | struct in_addr vtep_ip_in_msg; | |
14ddb3d9 | 502 | ifindex_t ifindex_link; |
d62a17ae | 503 | |
504 | memset(vxl_info, 0, sizeof(*vxl_info)); | |
0d6f7fd6 | 505 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 506 | parse_rtattr_nested(attr, IFLA_VXLAN_MAX, link_data); |
507 | if (!attr[IFLA_VXLAN_ID]) { | |
508 | if (IS_ZEBRA_DEBUG_KERNEL) | |
509 | zlog_debug( | |
510 | "IFLA_VXLAN_ID missing from VXLAN IF message"); | |
511 | return -1; | |
512 | } | |
513 | ||
514 | vni_in_msg = *(vni_t *)RTA_DATA(attr[IFLA_VXLAN_ID]); | |
515 | vxl_info->vni = vni_in_msg; | |
516 | if (!attr[IFLA_VXLAN_LOCAL]) { | |
517 | if (IS_ZEBRA_DEBUG_KERNEL) | |
518 | zlog_debug( | |
519 | "IFLA_VXLAN_LOCAL missing from VXLAN IF message"); | |
520 | } else { | |
521 | vtep_ip_in_msg = | |
522 | *(struct in_addr *)RTA_DATA(attr[IFLA_VXLAN_LOCAL]); | |
523 | vxl_info->vtep_ip = vtep_ip_in_msg; | |
524 | } | |
525 | ||
d7fe235c AK |
526 | if (attr[IFLA_VXLAN_GROUP]) { |
527 | vxl_info->mcast_grp = | |
528 | *(struct in_addr *)RTA_DATA(attr[IFLA_VXLAN_GROUP]); | |
529 | } | |
530 | ||
14ddb3d9 PG |
531 | if (!attr[IFLA_VXLAN_LINK]) { |
532 | if (IS_ZEBRA_DEBUG_KERNEL) | |
3efd0893 | 533 | zlog_debug("IFLA_VXLAN_LINK missing from VXLAN IF message"); |
14ddb3d9 PG |
534 | } else { |
535 | ifindex_link = | |
536 | *(ifindex_t *)RTA_DATA(attr[IFLA_VXLAN_LINK]); | |
537 | vxl_info->ifindex_link = ifindex_link; | |
538 | } | |
d62a17ae | 539 | return 0; |
6675513d | 540 | } |
541 | ||
542 | /* | |
543 | * Extract and save L2 params (of interest) for an interface. When a | |
544 | * bridge interface is added or updated, take further actions to map | |
545 | * its members. Likewise, for VxLAN interface. | |
546 | */ | |
d62a17ae | 547 | static void netlink_interface_update_l2info(struct interface *ifp, |
14ddb3d9 PG |
548 | struct rtattr *link_data, int add, |
549 | ns_id_t link_nsid) | |
6675513d | 550 | { |
d62a17ae | 551 | if (!link_data) |
552 | return; | |
553 | ||
554 | if (IS_ZEBRA_IF_BRIDGE(ifp)) { | |
555 | struct zebra_l2info_bridge bridge_info; | |
556 | ||
557 | netlink_extract_bridge_info(link_data, &bridge_info); | |
558 | zebra_l2_bridge_add_update(ifp, &bridge_info, add); | |
559 | } else if (IS_ZEBRA_IF_VLAN(ifp)) { | |
560 | struct zebra_l2info_vlan vlan_info; | |
561 | ||
562 | netlink_extract_vlan_info(link_data, &vlan_info); | |
563 | zebra_l2_vlanif_update(ifp, &vlan_info); | |
243b74ed AK |
564 | zebra_evpn_acc_bd_svi_set(ifp->info, NULL, |
565 | !!if_is_operative(ifp)); | |
d62a17ae | 566 | } else if (IS_ZEBRA_IF_VXLAN(ifp)) { |
567 | struct zebra_l2info_vxlan vxlan_info; | |
568 | ||
569 | netlink_extract_vxlan_info(link_data, &vxlan_info); | |
14ddb3d9 | 570 | vxlan_info.link_nsid = link_nsid; |
d62a17ae | 571 | zebra_l2_vxlanif_add_update(ifp, &vxlan_info, add); |
14ddb3d9 PG |
572 | if (link_nsid != NS_UNKNOWN && |
573 | vxlan_info.ifindex_link) | |
574 | zebra_if_update_link(ifp, vxlan_info.ifindex_link, | |
575 | link_nsid); | |
d62a17ae | 576 | } |
6675513d | 577 | } |
578 | ||
42b56639 AK |
579 | static int netlink_bridge_vxlan_update(struct interface *ifp, |
580 | struct rtattr *af_spec) | |
581 | { | |
582 | struct rtattr *aftb[IFLA_BRIDGE_MAX + 1]; | |
583 | struct bridge_vlan_info *vinfo; | |
584 | vlanid_t access_vlan; | |
585 | ||
586 | /* There is a 1-to-1 mapping of VLAN to VxLAN - hence | |
587 | * only 1 access VLAN is accepted. | |
588 | */ | |
589 | memset(aftb, 0, sizeof(aftb)); | |
590 | parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, af_spec); | |
591 | if (!aftb[IFLA_BRIDGE_VLAN_INFO]) | |
592 | return 0; | |
593 | ||
594 | vinfo = RTA_DATA(aftb[IFLA_BRIDGE_VLAN_INFO]); | |
595 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_PVID)) | |
596 | return 0; | |
597 | ||
598 | access_vlan = (vlanid_t)vinfo->vid; | |
599 | if (IS_ZEBRA_DEBUG_KERNEL) | |
600 | zlog_debug("Access VLAN %u for VxLAN IF %s(%u)", access_vlan, | |
601 | ifp->name, ifp->ifindex); | |
602 | zebra_l2_vxlanif_update_access_vlan(ifp, access_vlan); | |
603 | return 0; | |
604 | } | |
605 | ||
606 | static void netlink_bridge_vlan_update(struct interface *ifp, | |
607 | struct rtattr *af_spec) | |
608 | { | |
609 | struct rtattr *i; | |
610 | int rem; | |
611 | uint16_t vid_range_start = 0; | |
612 | struct zebra_if *zif; | |
613 | bitfield_t old_vlan_bitmap; | |
614 | struct bridge_vlan_info *vinfo; | |
615 | ||
616 | zif = (struct zebra_if *)ifp->info; | |
617 | ||
618 | /* cache the old bitmap addrs */ | |
619 | old_vlan_bitmap = zif->vlan_bitmap; | |
620 | /* create a new bitmap space for re-eval */ | |
621 | bf_init(zif->vlan_bitmap, IF_VLAN_BITMAP_MAX); | |
622 | ||
623 | for (i = RTA_DATA(af_spec), rem = RTA_PAYLOAD(af_spec); | |
624 | RTA_OK(i, rem); i = RTA_NEXT(i, rem)) { | |
625 | ||
626 | if (i->rta_type != IFLA_BRIDGE_VLAN_INFO) | |
627 | continue; | |
628 | ||
629 | vinfo = RTA_DATA(i); | |
630 | ||
631 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { | |
632 | vid_range_start = vinfo->vid; | |
633 | continue; | |
634 | } | |
635 | ||
636 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END)) | |
637 | vid_range_start = vinfo->vid; | |
638 | ||
639 | zebra_vlan_bitmap_compute(ifp, vid_range_start, vinfo->vid); | |
640 | } | |
641 | ||
642 | zebra_vlan_mbr_re_eval(ifp, old_vlan_bitmap); | |
643 | ||
644 | bf_free(old_vlan_bitmap); | |
645 | } | |
646 | ||
d62a17ae | 647 | static int netlink_bridge_interface(struct nlmsghdr *h, int len, ns_id_t ns_id, |
648 | int startup) | |
6675513d | 649 | { |
d62a17ae | 650 | char *name = NULL; |
651 | struct ifinfomsg *ifi; | |
652 | struct rtattr *tb[IFLA_MAX + 1]; | |
653 | struct interface *ifp; | |
42b56639 AK |
654 | struct zebra_if *zif; |
655 | struct rtattr *af_spec; | |
d62a17ae | 656 | |
657 | /* Fetch name and ifindex */ | |
658 | ifi = NLMSG_DATA(h); | |
0d6f7fd6 | 659 | memset(tb, 0, sizeof(tb)); |
d62a17ae | 660 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
661 | ||
662 | if (tb[IFLA_IFNAME] == NULL) | |
663 | return -1; | |
664 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
665 | ||
666 | /* The interface should already be known, if not discard. */ | |
667 | ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(ns_id), ifi->ifi_index); | |
668 | if (!ifp) { | |
9df414fe QY |
669 | zlog_debug("Cannot find bridge IF %s(%u)", name, |
670 | ifi->ifi_index); | |
d62a17ae | 671 | return 0; |
672 | } | |
d62a17ae | 673 | |
674 | /* We are only interested in the access VLAN i.e., AF_SPEC */ | |
42b56639 AK |
675 | af_spec = tb[IFLA_AF_SPEC]; |
676 | if (!af_spec) | |
677 | return 0; | |
d62a17ae | 678 | |
42b56639 AK |
679 | if (IS_ZEBRA_IF_VXLAN(ifp)) |
680 | return netlink_bridge_vxlan_update(ifp, af_spec); | |
d62a17ae | 681 | |
42b56639 AK |
682 | /* build vlan bitmap associated with this interface if that |
683 | * device type is interested in the vlans | |
684 | */ | |
685 | zif = (struct zebra_if *)ifp->info; | |
686 | if (bf_is_inited(zif->vlan_bitmap)) | |
687 | netlink_bridge_vlan_update(ifp, af_spec); | |
d62a17ae | 688 | |
d62a17ae | 689 | return 0; |
6675513d | 690 | } |
691 | ||
2bcf92e1 | 692 | /* If the interface is an es bond member then it must follow EVPN's |
c36e442c AK |
693 | * protodown setting |
694 | */ | |
695 | static void netlink_proc_dplane_if_protodown(struct zebra_if *zif, | |
696 | bool protodown) | |
697 | { | |
698 | bool zif_protodown; | |
699 | ||
700 | zif_protodown = !!(zif->flags & ZIF_FLAG_PROTODOWN); | |
701 | if (protodown == zif_protodown) | |
702 | return; | |
703 | ||
704 | if (IS_ZEBRA_DEBUG_EVPN_MH_ES || IS_ZEBRA_DEBUG_KERNEL) | |
705 | zlog_debug("interface %s dplane change, protdown %s", | |
706 | zif->ifp->name, protodown ? "on" : "off"); | |
707 | ||
708 | if (zebra_evpn_is_es_bond_member(zif->ifp)) { | |
709 | if (IS_ZEBRA_DEBUG_EVPN_MH_ES || IS_ZEBRA_DEBUG_KERNEL) | |
710 | zlog_debug( | |
711 | "bond mbr %s re-instate protdown %s in the dplane", | |
712 | zif->ifp->name, zif_protodown ? "on" : "off"); | |
713 | netlink_protodown(zif->ifp, zif_protodown); | |
714 | } else { | |
715 | if (protodown) | |
716 | zif->flags |= ZIF_FLAG_PROTODOWN; | |
717 | else | |
718 | zif->flags &= ~ZIF_FLAG_PROTODOWN; | |
719 | } | |
720 | } | |
721 | ||
2414abd3 DS |
722 | /* |
723 | * Called from interface_lookup_netlink(). This function is only used | |
724 | * during bootstrap. | |
725 | */ | |
726 | static int netlink_interface(struct nlmsghdr *h, ns_id_t ns_id, int startup) | |
1fdc9eae | 727 | { |
d62a17ae | 728 | int len; |
729 | struct ifinfomsg *ifi; | |
730 | struct rtattr *tb[IFLA_MAX + 1]; | |
731 | struct rtattr *linkinfo[IFLA_MAX + 1]; | |
732 | struct interface *ifp; | |
733 | char *name = NULL; | |
734 | char *kind = NULL; | |
48884c6b | 735 | char *desc = NULL; |
d62a17ae | 736 | char *slave_kind = NULL; |
ea7ec261 | 737 | struct zebra_ns *zns = NULL; |
d62a17ae | 738 | vrf_id_t vrf_id = VRF_DEFAULT; |
739 | zebra_iftype_t zif_type = ZEBRA_IF_OTHER; | |
740 | zebra_slave_iftype_t zif_slave_type = ZEBRA_IF_SLAVE_NONE; | |
741 | ifindex_t bridge_ifindex = IFINDEX_INTERNAL; | |
742 | ifindex_t link_ifindex = IFINDEX_INTERNAL; | |
b9368db9 | 743 | ifindex_t bond_ifindex = IFINDEX_INTERNAL; |
520ebf72 | 744 | struct zebra_if *zif; |
14ddb3d9 | 745 | ns_id_t link_nsid = ns_id; |
d62a17ae | 746 | |
747 | zns = zebra_ns_lookup(ns_id); | |
748 | ifi = NLMSG_DATA(h); | |
749 | ||
750 | if (h->nlmsg_type != RTM_NEWLINK) | |
751 | return 0; | |
752 | ||
753 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
9bdf8618 | 754 | if (len < 0) { |
15569c58 DA |
755 | zlog_err( |
756 | "%s: Message received from netlink is of a broken size: %d %zu", | |
757 | __func__, h->nlmsg_len, | |
758 | (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg))); | |
d62a17ae | 759 | return -1; |
9bdf8618 | 760 | } |
d62a17ae | 761 | |
762 | /* We are interested in some AF_BRIDGE notifications. */ | |
763 | if (ifi->ifi_family == AF_BRIDGE) | |
764 | return netlink_bridge_interface(h, len, ns_id, startup); | |
765 | ||
766 | /* Looking up interface name. */ | |
0d6f7fd6 DA |
767 | memset(tb, 0, sizeof(tb)); |
768 | memset(linkinfo, 0, sizeof(linkinfo)); | |
d62a17ae | 769 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
1fdc9eae | 770 | |
d62a17ae | 771 | /* check for wireless messages to ignore */ |
772 | if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0)) { | |
773 | if (IS_ZEBRA_DEBUG_KERNEL) | |
774 | zlog_debug("%s: ignoring IFLA_WIRELESS message", | |
775 | __func__); | |
776 | return 0; | |
777 | } | |
1fdc9eae | 778 | |
d62a17ae | 779 | if (tb[IFLA_IFNAME] == NULL) |
780 | return -1; | |
781 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
1fdc9eae | 782 | |
48884c6b DS |
783 | if (tb[IFLA_IFALIAS]) |
784 | desc = (char *)RTA_DATA(tb[IFLA_IFALIAS]); | |
785 | ||
d62a17ae | 786 | if (tb[IFLA_LINKINFO]) { |
787 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]); | |
1fdc9eae | 788 | |
d62a17ae | 789 | if (linkinfo[IFLA_INFO_KIND]) |
790 | kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]); | |
1fdc9eae | 791 | |
d62a17ae | 792 | if (linkinfo[IFLA_INFO_SLAVE_KIND]) |
793 | slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]); | |
1fdc9eae | 794 | |
b9368db9 DD |
795 | if ((slave_kind != NULL) && strcmp(slave_kind, "bond") == 0) |
796 | netlink_determine_zebra_iftype("bond_slave", &zif_type); | |
797 | else | |
798 | netlink_determine_zebra_iftype(kind, &zif_type); | |
d62a17ae | 799 | } |
800 | ||
801 | /* If VRF, create the VRF structure itself. */ | |
78dd30b2 | 802 | if (zif_type == ZEBRA_IF_VRF && !vrf_is_backend_netns()) { |
5e031198 | 803 | netlink_vrf_change(h, tb[IFLA_LINKINFO], ns_id, name); |
d62a17ae | 804 | vrf_id = (vrf_id_t)ifi->ifi_index; |
805 | } | |
806 | ||
807 | if (tb[IFLA_MASTER]) { | |
78dd30b2 PG |
808 | if (slave_kind && (strcmp(slave_kind, "vrf") == 0) |
809 | && !vrf_is_backend_netns()) { | |
d62a17ae | 810 | zif_slave_type = ZEBRA_IF_SLAVE_VRF; |
d7c0a89a | 811 | vrf_id = *(uint32_t *)RTA_DATA(tb[IFLA_MASTER]); |
d62a17ae | 812 | } else if (slave_kind && (strcmp(slave_kind, "bridge") == 0)) { |
813 | zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE; | |
814 | bridge_ifindex = | |
815 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
b9368db9 DD |
816 | } else if (slave_kind && (strcmp(slave_kind, "bond") == 0)) { |
817 | zif_slave_type = ZEBRA_IF_SLAVE_BOND; | |
818 | bond_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
d62a17ae | 819 | } else |
820 | zif_slave_type = ZEBRA_IF_SLAVE_OTHER; | |
821 | } | |
78dd30b2 PG |
822 | if (vrf_is_backend_netns()) |
823 | vrf_id = (vrf_id_t)ns_id; | |
a36898e7 | 824 | |
d62a17ae | 825 | /* If linking to another interface, note it. */ |
826 | if (tb[IFLA_LINK]) | |
827 | link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]); | |
828 | ||
b1cc23b2 | 829 | if (tb[IFLA_LINK_NETNSID]) { |
14ddb3d9 | 830 | link_nsid = *(ns_id_t *)RTA_DATA(tb[IFLA_LINK_NETNSID]); |
b1cc23b2 PG |
831 | link_nsid = ns_id_get_absolute(ns_id, link_nsid); |
832 | } | |
14ddb3d9 | 833 | |
ea7ec261 DD |
834 | /* Add interface. |
835 | * We add by index first because in some cases such as the master | |
836 | * interface, we have the index before we have the name. Fixing | |
837 | * back references on the slave interfaces is painful if not done | |
838 | * this way, i.e. by creating by ifindex. | |
839 | */ | |
bd23c840 | 840 | ifp = if_get_by_ifindex(ifi->ifi_index, vrf_id); |
ea7ec261 | 841 | set_ifindex(ifp, ifi->ifi_index, zns); /* add it to ns struct */ |
d5c65bf1 | 842 | |
bd23c840 PR |
843 | if_set_name(ifp, name); |
844 | ||
d62a17ae | 845 | ifp->flags = ifi->ifi_flags & 0x0000fffff; |
d62a17ae | 846 | ifp->mtu6 = ifp->mtu = *(uint32_t *)RTA_DATA(tb[IFLA_MTU]); |
847 | ifp->metric = 0; | |
594c2878 | 848 | ifp->speed = get_iflink_speed(ifp, NULL); |
d62a17ae | 849 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; |
850 | ||
851 | /* Set zebra interface type */ | |
852 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); | |
b0fa6f6a CS |
853 | if (IS_ZEBRA_IF_VRF(ifp)) |
854 | SET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK); | |
d62a17ae | 855 | |
98efddf1 DS |
856 | /* |
857 | * Just set the @link/lower-device ifindex. During nldump interfaces are | |
520ebf72 AK |
858 | * not ordered in any fashion so we may end up getting upper devices |
859 | * before lower devices. We will setup the real linkage once the dump | |
98efddf1 DS |
860 | * is complete. |
861 | */ | |
520ebf72 AK |
862 | zif = (struct zebra_if *)ifp->info; |
863 | zif->link_ifindex = link_ifindex; | |
d62a17ae | 864 | |
ba5165ec DS |
865 | if (desc) { |
866 | XFREE(MTYPE_TMP, zif->desc); | |
867 | zif->desc = XSTRDUP(MTYPE_TMP, desc); | |
868 | } | |
869 | ||
d62a17ae | 870 | /* Hardware type and address. */ |
871 | ifp->ll_type = netlink_to_zebra_link_type(ifi->ifi_type); | |
872 | netlink_interface_update_hw_addr(tb, ifp); | |
873 | ||
874 | if_add_update(ifp); | |
875 | ||
876 | /* Extract and save L2 interface information, take additional actions. | |
877 | */ | |
14ddb3d9 PG |
878 | netlink_interface_update_l2info(ifp, linkinfo[IFLA_INFO_DATA], |
879 | 1, link_nsid); | |
c36e442c AK |
880 | if (IS_ZEBRA_IF_BOND(ifp)) |
881 | zebra_l2if_update_bond(ifp, true); | |
d62a17ae | 882 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp)) |
a6e0edf2 | 883 | zebra_l2if_update_bridge_slave(ifp, bridge_ifindex, ns_id); |
b9368db9 DD |
884 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp)) |
885 | zebra_l2if_update_bond_slave(ifp, bond_ifindex); | |
d62a17ae | 886 | |
c36e442c AK |
887 | if (tb[IFLA_PROTO_DOWN]) { |
888 | uint8_t protodown; | |
889 | ||
890 | protodown = *(uint8_t *)RTA_DATA(tb[IFLA_PROTO_DOWN]); | |
891 | netlink_proc_dplane_if_protodown(zif, !!protodown); | |
892 | } | |
893 | ||
d62a17ae | 894 | return 0; |
1fdc9eae | 895 | } |
896 | ||
289602d7 | 897 | /* Request for specific interface or address information from the kernel */ |
85a75f1e MS |
898 | static int netlink_request_intf_addr(struct nlsock *netlink_cmd, int family, |
899 | int type, uint32_t filter_mask) | |
289602d7 | 900 | { |
d62a17ae | 901 | struct { |
902 | struct nlmsghdr n; | |
903 | struct ifinfomsg ifm; | |
904 | char buf[256]; | |
905 | } req; | |
906 | ||
907 | /* Form the request, specifying filter (rtattr) if needed. */ | |
908 | memset(&req, 0, sizeof(req)); | |
909 | req.n.nlmsg_type = type; | |
718f9b0f | 910 | req.n.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST; |
d62a17ae | 911 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
912 | req.ifm.ifi_family = family; | |
913 | ||
914 | /* Include filter, if specified. */ | |
915 | if (filter_mask) | |
312a6bee | 916 | nl_attr_put32(&req.n, sizeof(req), IFLA_EXT_MASK, filter_mask); |
d62a17ae | 917 | |
fd3f8e52 | 918 | return netlink_request(netlink_cmd, &req); |
289602d7 | 919 | } |
920 | ||
1fdc9eae | 921 | /* Interface lookup by netlink socket. */ |
d62a17ae | 922 | int interface_lookup_netlink(struct zebra_ns *zns) |
1fdc9eae | 923 | { |
d62a17ae | 924 | int ret; |
85a75f1e MS |
925 | struct zebra_dplane_info dp_info; |
926 | struct nlsock *netlink_cmd = &zns->netlink_cmd; | |
927 | ||
928 | /* Capture key info from ns struct */ | |
929 | zebra_dplane_info_from_zns(&dp_info, zns, true /*is_cmd*/); | |
d62a17ae | 930 | |
931 | /* Get interface information. */ | |
85a75f1e | 932 | ret = netlink_request_intf_addr(netlink_cmd, AF_PACKET, RTM_GETLINK, 0); |
d62a17ae | 933 | if (ret < 0) |
934 | return ret; | |
85a75f1e | 935 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, |
d62a17ae | 936 | 1); |
937 | if (ret < 0) | |
938 | return ret; | |
939 | ||
940 | /* Get interface information - for bridge interfaces. */ | |
85a75f1e | 941 | ret = netlink_request_intf_addr(netlink_cmd, AF_BRIDGE, RTM_GETLINK, |
d62a17ae | 942 | RTEXT_FILTER_BRVLAN); |
943 | if (ret < 0) | |
944 | return ret; | |
85a75f1e | 945 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, |
d62a17ae | 946 | 0); |
947 | if (ret < 0) | |
948 | return ret; | |
949 | ||
950 | /* Get interface information - for bridge interfaces. */ | |
85a75f1e | 951 | ret = netlink_request_intf_addr(netlink_cmd, AF_BRIDGE, RTM_GETLINK, |
d62a17ae | 952 | RTEXT_FILTER_BRVLAN); |
953 | if (ret < 0) | |
954 | return ret; | |
85a75f1e | 955 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, |
d62a17ae | 956 | 0); |
957 | if (ret < 0) | |
958 | return ret; | |
959 | ||
520ebf72 AK |
960 | /* fixup linkages */ |
961 | zebra_if_update_all_links(); | |
d2bec88a SW |
962 | return 0; |
963 | } | |
964 | ||
965 | /** | |
966 | * interface_addr_lookup_netlink() - Look up interface addresses | |
967 | * | |
968 | * @zns: Zebra netlink socket | |
969 | * Return: Result status | |
970 | */ | |
971 | static int interface_addr_lookup_netlink(struct zebra_ns *zns) | |
972 | { | |
973 | int ret; | |
974 | struct zebra_dplane_info dp_info; | |
975 | struct nlsock *netlink_cmd = &zns->netlink_cmd; | |
976 | ||
977 | /* Capture key info from ns struct */ | |
978 | zebra_dplane_info_from_zns(&dp_info, zns, true /*is_cmd*/); | |
520ebf72 | 979 | |
d62a17ae | 980 | /* Get IPv4 address of the interfaces. */ |
85a75f1e | 981 | ret = netlink_request_intf_addr(netlink_cmd, AF_INET, RTM_GETADDR, 0); |
d62a17ae | 982 | if (ret < 0) |
983 | return ret; | |
85a75f1e | 984 | ret = netlink_parse_info(netlink_interface_addr, netlink_cmd, &dp_info, |
d62a17ae | 985 | 0, 1); |
986 | if (ret < 0) | |
987 | return ret; | |
988 | ||
989 | /* Get IPv6 address of the interfaces. */ | |
85a75f1e | 990 | ret = netlink_request_intf_addr(netlink_cmd, AF_INET6, RTM_GETADDR, 0); |
d62a17ae | 991 | if (ret < 0) |
992 | return ret; | |
85a75f1e | 993 | ret = netlink_parse_info(netlink_interface_addr, netlink_cmd, &dp_info, |
d62a17ae | 994 | 0, 1); |
995 | if (ret < 0) | |
996 | return ret; | |
997 | ||
998 | return 0; | |
1fdc9eae | 999 | } |
1000 | ||
e0ae31b8 DS |
1001 | int kernel_interface_set_master(struct interface *master, |
1002 | struct interface *slave) | |
1003 | { | |
1004 | struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT); | |
1005 | ||
1006 | struct { | |
1007 | struct nlmsghdr n; | |
1008 | struct ifinfomsg ifa; | |
1009 | char buf[NL_PKT_BUF_SIZE]; | |
1010 | } req; | |
1011 | ||
0d6f7fd6 | 1012 | memset(&req, 0, sizeof(req)); |
e0ae31b8 DS |
1013 | |
1014 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
1015 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
1016 | req.n.nlmsg_type = RTM_SETLINK; | |
1017 | req.n.nlmsg_pid = zns->netlink_cmd.snl.nl_pid; | |
1018 | ||
1019 | req.ifa.ifi_index = slave->ifindex; | |
1020 | ||
a757997c JU |
1021 | nl_attr_put32(&req.n, sizeof(req), IFLA_MASTER, master->ifindex); |
1022 | nl_attr_put32(&req.n, sizeof(req), IFLA_LINK, slave->ifindex); | |
e0ae31b8 DS |
1023 | |
1024 | return netlink_talk(netlink_talk_filter, &req.n, &zns->netlink_cmd, zns, | |
1025 | 0); | |
1026 | } | |
1027 | ||
1fdc9eae | 1028 | /* Interface address modification. */ |
67e3369e JU |
1029 | static ssize_t netlink_address_msg_encoder(struct zebra_dplane_ctx *ctx, |
1030 | void *buf, size_t buflen) | |
1fdc9eae | 1031 | { |
d62a17ae | 1032 | int bytelen; |
64168803 MS |
1033 | const struct prefix *p; |
1034 | int cmd; | |
1035 | const char *label; | |
1fdc9eae | 1036 | |
d62a17ae | 1037 | struct { |
1038 | struct nlmsghdr n; | |
1039 | struct ifaddrmsg ifa; | |
67e3369e JU |
1040 | char buf[0]; |
1041 | } *req = buf; | |
1042 | ||
1043 | if (buflen < sizeof(*req)) | |
1044 | return 0; | |
1fdc9eae | 1045 | |
64168803 | 1046 | p = dplane_ctx_get_intf_addr(ctx); |
67e3369e | 1047 | memset(req, 0, sizeof(*req)); |
1fdc9eae | 1048 | |
64168803 | 1049 | bytelen = (p->family == AF_INET ? 4 : 16); |
1fdc9eae | 1050 | |
67e3369e JU |
1051 | req->n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)); |
1052 | req->n.nlmsg_flags = NLM_F_REQUEST; | |
a55ba23f | 1053 | |
64168803 MS |
1054 | if (dplane_ctx_get_op(ctx) == DPLANE_OP_ADDR_INSTALL) |
1055 | cmd = RTM_NEWADDR; | |
1056 | else | |
1057 | cmd = RTM_DELADDR; | |
1058 | ||
67e3369e JU |
1059 | req->n.nlmsg_type = cmd; |
1060 | req->ifa.ifa_family = p->family; | |
1fdc9eae | 1061 | |
67e3369e | 1062 | req->ifa.ifa_index = dplane_ctx_get_ifindex(ctx); |
1fdc9eae | 1063 | |
67e3369e JU |
1064 | if (!nl_attr_put(&req->n, buflen, IFA_LOCAL, &p->u.prefix, bytelen)) |
1065 | return 0; | |
1fdc9eae | 1066 | |
64168803 MS |
1067 | if (p->family == AF_INET) { |
1068 | if (dplane_ctx_intf_is_connected(ctx)) { | |
1069 | p = dplane_ctx_get_intf_dest(ctx); | |
67e3369e JU |
1070 | if (!nl_attr_put(&req->n, buflen, IFA_ADDRESS, |
1071 | &p->u.prefix, bytelen)) | |
1072 | return 0; | |
0f3af738 JW |
1073 | } else if (cmd == RTM_NEWADDR) { |
1074 | struct in_addr broad = { | |
1075 | .s_addr = ipv4_broadcast_addr(p->u.prefix4.s_addr, | |
1076 | p->prefixlen) | |
1077 | }; | |
67e3369e JU |
1078 | if (!nl_attr_put(&req->n, buflen, IFA_BROADCAST, &broad, |
1079 | bytelen)) | |
1080 | return 0; | |
d62a17ae | 1081 | } |
1082 | } | |
1fdc9eae | 1083 | |
64168803 | 1084 | /* p is now either address or destination/bcast addr */ |
67e3369e | 1085 | req->ifa.ifa_prefixlen = p->prefixlen; |
e8d19a05 | 1086 | |
64168803 | 1087 | if (dplane_ctx_intf_is_secondary(ctx)) |
67e3369e | 1088 | SET_FLAG(req->ifa.ifa_flags, IFA_F_SECONDARY); |
1fdc9eae | 1089 | |
64168803 MS |
1090 | if (dplane_ctx_intf_has_label(ctx)) { |
1091 | label = dplane_ctx_get_intf_label(ctx); | |
67e3369e JU |
1092 | if (!nl_attr_put(&req->n, buflen, IFA_LABEL, label, |
1093 | strlen(label) + 1)) | |
1094 | return 0; | |
64168803 | 1095 | } |
1fdc9eae | 1096 | |
67e3369e | 1097 | return NLMSG_ALIGN(req->n.nlmsg_len); |
e86b71f1 PG |
1098 | } |
1099 | ||
67e3369e JU |
1100 | enum netlink_msg_status |
1101 | netlink_put_address_update_msg(struct nl_batch *bth, | |
1102 | struct zebra_dplane_ctx *ctx) | |
1103 | { | |
1104 | return netlink_batch_add_msg(bth, ctx, netlink_address_msg_encoder, | |
1105 | false); | |
e86b71f1 PG |
1106 | } |
1107 | ||
2414abd3 | 1108 | int netlink_interface_addr(struct nlmsghdr *h, ns_id_t ns_id, int startup) |
1fdc9eae | 1109 | { |
d62a17ae | 1110 | int len; |
1111 | struct ifaddrmsg *ifa; | |
1112 | struct rtattr *tb[IFA_MAX + 1]; | |
1113 | struct interface *ifp; | |
1114 | void *addr; | |
1115 | void *broad; | |
d7c0a89a | 1116 | uint8_t flags = 0; |
d62a17ae | 1117 | char *label = NULL; |
1118 | struct zebra_ns *zns; | |
cde1af84 | 1119 | uint32_t metric = METRIC_MAX; |
9254efed | 1120 | uint32_t kernel_flags = 0; |
d62a17ae | 1121 | |
1122 | zns = zebra_ns_lookup(ns_id); | |
1123 | ifa = NLMSG_DATA(h); | |
1124 | ||
8a1b681c | 1125 | if (ifa->ifa_family != AF_INET && ifa->ifa_family != AF_INET6) { |
9df414fe | 1126 | flog_warn( |
e914ccbe | 1127 | EC_ZEBRA_UNKNOWN_FAMILY, |
87b5d1b0 DS |
1128 | "Invalid address family: %u received from kernel interface addr change: %s", |
1129 | ifa->ifa_family, nl_msg_type_to_str(h->nlmsg_type)); | |
d62a17ae | 1130 | return 0; |
8a1b681c | 1131 | } |
d62a17ae | 1132 | |
1133 | if (h->nlmsg_type != RTM_NEWADDR && h->nlmsg_type != RTM_DELADDR) | |
1134 | return 0; | |
1135 | ||
1136 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifaddrmsg)); | |
9bdf8618 | 1137 | if (len < 0) { |
15569c58 DA |
1138 | zlog_err( |
1139 | "%s: Message received from netlink is of a broken size: %d %zu", | |
1140 | __func__, h->nlmsg_len, | |
1141 | (size_t)NLMSG_LENGTH(sizeof(struct ifaddrmsg))); | |
d62a17ae | 1142 | return -1; |
9bdf8618 | 1143 | } |
d62a17ae | 1144 | |
0d6f7fd6 | 1145 | memset(tb, 0, sizeof(tb)); |
d62a17ae | 1146 | netlink_parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), len); |
1147 | ||
1148 | ifp = if_lookup_by_index_per_ns(zns, ifa->ifa_index); | |
1149 | if (ifp == NULL) { | |
af4c2728 | 1150 | flog_err( |
450971aa | 1151 | EC_LIB_INTERFACE, |
d62a17ae | 1152 | "netlink_interface_addr can't find interface by index %d", |
1153 | ifa->ifa_index); | |
1154 | return -1; | |
1155 | } | |
1156 | ||
9254efed DS |
1157 | /* Flags passed through */ |
1158 | if (tb[IFA_FLAGS]) | |
1159 | kernel_flags = *(int *)RTA_DATA(tb[IFA_FLAGS]); | |
1160 | else | |
1161 | kernel_flags = ifa->ifa_flags; | |
1162 | ||
d62a17ae | 1163 | if (IS_ZEBRA_DEBUG_KERNEL) /* remove this line to see initial ifcfg */ |
1164 | { | |
1165 | char buf[BUFSIZ]; | |
1166 | zlog_debug("netlink_interface_addr %s %s flags 0x%x:", | |
1167 | nl_msg_type_to_str(h->nlmsg_type), ifp->name, | |
9254efed | 1168 | kernel_flags); |
d62a17ae | 1169 | if (tb[IFA_LOCAL]) |
1170 | zlog_debug(" IFA_LOCAL %s/%d", | |
1171 | inet_ntop(ifa->ifa_family, | |
1172 | RTA_DATA(tb[IFA_LOCAL]), buf, | |
1173 | BUFSIZ), | |
1174 | ifa->ifa_prefixlen); | |
1175 | if (tb[IFA_ADDRESS]) | |
1176 | zlog_debug(" IFA_ADDRESS %s/%d", | |
1177 | inet_ntop(ifa->ifa_family, | |
1178 | RTA_DATA(tb[IFA_ADDRESS]), buf, | |
1179 | BUFSIZ), | |
1180 | ifa->ifa_prefixlen); | |
1181 | if (tb[IFA_BROADCAST]) | |
1182 | zlog_debug(" IFA_BROADCAST %s/%d", | |
1183 | inet_ntop(ifa->ifa_family, | |
1184 | RTA_DATA(tb[IFA_BROADCAST]), buf, | |
1185 | BUFSIZ), | |
1186 | ifa->ifa_prefixlen); | |
1187 | if (tb[IFA_LABEL] && strcmp(ifp->name, RTA_DATA(tb[IFA_LABEL]))) | |
1188 | zlog_debug(" IFA_LABEL %s", | |
1189 | (char *)RTA_DATA(tb[IFA_LABEL])); | |
1190 | ||
1191 | if (tb[IFA_CACHEINFO]) { | |
1192 | struct ifa_cacheinfo *ci = RTA_DATA(tb[IFA_CACHEINFO]); | |
1193 | zlog_debug(" IFA_CACHEINFO pref %d, valid %d", | |
1194 | ci->ifa_prefered, ci->ifa_valid); | |
1195 | } | |
1196 | } | |
1197 | ||
1198 | /* logic copied from iproute2/ip/ipaddress.c:print_addrinfo() */ | |
1199 | if (tb[IFA_LOCAL] == NULL) | |
1200 | tb[IFA_LOCAL] = tb[IFA_ADDRESS]; | |
1201 | if (tb[IFA_ADDRESS] == NULL) | |
1202 | tb[IFA_ADDRESS] = tb[IFA_LOCAL]; | |
1203 | ||
1204 | /* local interface address */ | |
1205 | addr = (tb[IFA_LOCAL] ? RTA_DATA(tb[IFA_LOCAL]) : NULL); | |
1206 | ||
1207 | /* is there a peer address? */ | |
1208 | if (tb[IFA_ADDRESS] | |
1209 | && memcmp(RTA_DATA(tb[IFA_ADDRESS]), RTA_DATA(tb[IFA_LOCAL]), | |
1210 | RTA_PAYLOAD(tb[IFA_ADDRESS]))) { | |
1211 | broad = RTA_DATA(tb[IFA_ADDRESS]); | |
1212 | SET_FLAG(flags, ZEBRA_IFA_PEER); | |
1213 | } else | |
1214 | /* seeking a broadcast address */ | |
1215 | broad = (tb[IFA_BROADCAST] ? RTA_DATA(tb[IFA_BROADCAST]) | |
1216 | : NULL); | |
1217 | ||
1218 | /* addr is primary key, SOL if we don't have one */ | |
1219 | if (addr == NULL) { | |
14a4d9d0 | 1220 | zlog_debug("%s: Local Interface Address is NULL for %s", |
1221 | __func__, ifp->name); | |
d62a17ae | 1222 | return -1; |
1223 | } | |
1224 | ||
1225 | /* Flags. */ | |
9254efed | 1226 | if (kernel_flags & IFA_F_SECONDARY) |
d62a17ae | 1227 | SET_FLAG(flags, ZEBRA_IFA_SECONDARY); |
1228 | ||
1229 | /* Label */ | |
1230 | if (tb[IFA_LABEL]) | |
1231 | label = (char *)RTA_DATA(tb[IFA_LABEL]); | |
1232 | ||
2e1cc436 | 1233 | if (label && strcmp(ifp->name, label) == 0) |
d62a17ae | 1234 | label = NULL; |
1235 | ||
cde1af84 AK |
1236 | if (tb[IFA_RT_PRIORITY]) |
1237 | metric = *(uint32_t *)RTA_DATA(tb[IFA_RT_PRIORITY]); | |
1238 | ||
d62a17ae | 1239 | /* Register interface address to the interface. */ |
1240 | if (ifa->ifa_family == AF_INET) { | |
930571d2 | 1241 | if (ifa->ifa_prefixlen > IPV4_MAX_BITLEN) { |
e17d9b2d | 1242 | zlog_err( |
87b5d1b0 DS |
1243 | "Invalid prefix length: %u received from kernel interface addr change: %s", |
1244 | ifa->ifa_prefixlen, | |
1245 | nl_msg_type_to_str(h->nlmsg_type)); | |
e17d9b2d | 1246 | return -1; |
930571d2 | 1247 | } |
20e879f9 | 1248 | |
d62a17ae | 1249 | if (h->nlmsg_type == RTM_NEWADDR) |
1250 | connected_add_ipv4(ifp, flags, (struct in_addr *)addr, | |
1251 | ifa->ifa_prefixlen, | |
cde1af84 AK |
1252 | (struct in_addr *)broad, label, |
1253 | metric); | |
20e879f9 MS |
1254 | else if (CHECK_FLAG(flags, ZEBRA_IFA_PEER)) { |
1255 | /* Delete with a peer address */ | |
1256 | connected_delete_ipv4( | |
1257 | ifp, flags, (struct in_addr *)addr, | |
1258 | ifa->ifa_prefixlen, broad); | |
1259 | } else | |
d62a17ae | 1260 | connected_delete_ipv4( |
1261 | ifp, flags, (struct in_addr *)addr, | |
fd267f08 | 1262 | ifa->ifa_prefixlen, NULL); |
d62a17ae | 1263 | } |
20e879f9 | 1264 | |
d62a17ae | 1265 | if (ifa->ifa_family == AF_INET6) { |
930571d2 | 1266 | if (ifa->ifa_prefixlen > IPV6_MAX_BITLEN) { |
e17d9b2d | 1267 | zlog_err( |
87b5d1b0 DS |
1268 | "Invalid prefix length: %u received from kernel interface addr change: %s", |
1269 | ifa->ifa_prefixlen, | |
1270 | nl_msg_type_to_str(h->nlmsg_type)); | |
e17d9b2d | 1271 | return -1; |
930571d2 | 1272 | } |
d62a17ae | 1273 | if (h->nlmsg_type == RTM_NEWADDR) { |
1274 | /* Only consider valid addresses; we'll not get a | |
1275 | * notification from | |
1276 | * the kernel till IPv6 DAD has completed, but at init | |
1277 | * time, Quagga | |
1278 | * does query for and will receive all addresses. | |
1279 | */ | |
9254efed | 1280 | if (!(kernel_flags |
d62a17ae | 1281 | & (IFA_F_DADFAILED | IFA_F_TENTATIVE))) |
60466a63 QY |
1282 | connected_add_ipv6(ifp, flags, |
1283 | (struct in6_addr *)addr, | |
60c0687a | 1284 | (struct in6_addr *)broad, |
cde1af84 AK |
1285 | ifa->ifa_prefixlen, label, |
1286 | metric); | |
d62a17ae | 1287 | } else |
1288 | connected_delete_ipv6(ifp, (struct in6_addr *)addr, | |
fd267f08 | 1289 | NULL, ifa->ifa_prefixlen); |
d62a17ae | 1290 | } |
1291 | ||
2a181147 SW |
1292 | |
1293 | /* | |
1294 | * Linux kernel does not send route delete on interface down/addr del | |
1295 | * so we have to re-process routes it owns (i.e. kernel routes) | |
1296 | */ | |
1297 | if (h->nlmsg_type != RTM_NEWADDR) | |
1298 | rib_update(RIB_UPDATE_KERNEL); | |
1299 | ||
d62a17ae | 1300 | return 0; |
1fdc9eae | 1301 | } |
1302 | ||
2414abd3 | 1303 | int netlink_link_change(struct nlmsghdr *h, ns_id_t ns_id, int startup) |
1fdc9eae | 1304 | { |
d62a17ae | 1305 | int len; |
1306 | struct ifinfomsg *ifi; | |
1307 | struct rtattr *tb[IFLA_MAX + 1]; | |
1308 | struct rtattr *linkinfo[IFLA_MAX + 1]; | |
1309 | struct interface *ifp; | |
1310 | char *name = NULL; | |
1311 | char *kind = NULL; | |
48884c6b | 1312 | char *desc = NULL; |
d62a17ae | 1313 | char *slave_kind = NULL; |
1314 | struct zebra_ns *zns; | |
1315 | vrf_id_t vrf_id = VRF_DEFAULT; | |
1316 | zebra_iftype_t zif_type = ZEBRA_IF_OTHER; | |
1317 | zebra_slave_iftype_t zif_slave_type = ZEBRA_IF_SLAVE_NONE; | |
1318 | ifindex_t bridge_ifindex = IFINDEX_INTERNAL; | |
b9368db9 | 1319 | ifindex_t bond_ifindex = IFINDEX_INTERNAL; |
d62a17ae | 1320 | ifindex_t link_ifindex = IFINDEX_INTERNAL; |
97c4e1d0 | 1321 | uint8_t old_hw_addr[INTERFACE_HWADDR_MAX]; |
ba5165ec | 1322 | struct zebra_if *zif; |
14ddb3d9 | 1323 | ns_id_t link_nsid = ns_id; |
c36e442c | 1324 | ifindex_t master_infindex = IFINDEX_INTERNAL; |
d62a17ae | 1325 | |
1326 | zns = zebra_ns_lookup(ns_id); | |
1327 | ifi = NLMSG_DATA(h); | |
1328 | ||
fe533c56 | 1329 | /* assume if not default zns, then new VRF */ |
d62a17ae | 1330 | if (!(h->nlmsg_type == RTM_NEWLINK || h->nlmsg_type == RTM_DELLINK)) { |
1331 | /* If this is not link add/delete message so print warning. */ | |
87b5d1b0 DS |
1332 | zlog_debug("netlink_link_change: wrong kernel message %s", |
1333 | nl_msg_type_to_str(h->nlmsg_type)); | |
d62a17ae | 1334 | return 0; |
1335 | } | |
1336 | ||
8a1b681c SW |
1337 | if (!(ifi->ifi_family == AF_UNSPEC || ifi->ifi_family == AF_BRIDGE |
1338 | || ifi->ifi_family == AF_INET6)) { | |
9df414fe | 1339 | flog_warn( |
e914ccbe | 1340 | EC_ZEBRA_UNKNOWN_FAMILY, |
87b5d1b0 DS |
1341 | "Invalid address family: %u received from kernel link change: %s", |
1342 | ifi->ifi_family, nl_msg_type_to_str(h->nlmsg_type)); | |
8a1b681c SW |
1343 | return 0; |
1344 | } | |
1345 | ||
d62a17ae | 1346 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
9bdf8618 | 1347 | if (len < 0) { |
15569c58 DA |
1348 | zlog_err( |
1349 | "%s: Message received from netlink is of a broken size %d %zu", | |
1350 | __func__, h->nlmsg_len, | |
1351 | (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg))); | |
d62a17ae | 1352 | return -1; |
9bdf8618 | 1353 | } |
d62a17ae | 1354 | |
1355 | /* We are interested in some AF_BRIDGE notifications. */ | |
1356 | if (ifi->ifi_family == AF_BRIDGE) | |
1357 | return netlink_bridge_interface(h, len, ns_id, startup); | |
1358 | ||
1359 | /* Looking up interface name. */ | |
0d6f7fd6 DA |
1360 | memset(tb, 0, sizeof(tb)); |
1361 | memset(linkinfo, 0, sizeof(linkinfo)); | |
d62a17ae | 1362 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
1fdc9eae | 1363 | |
d62a17ae | 1364 | /* check for wireless messages to ignore */ |
1365 | if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0)) { | |
1366 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1367 | zlog_debug("%s: ignoring IFLA_WIRELESS message", | |
1368 | __func__); | |
1369 | return 0; | |
1370 | } | |
1fdc9eae | 1371 | |
d62a17ae | 1372 | if (tb[IFLA_IFNAME] == NULL) |
1373 | return -1; | |
1374 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
1fdc9eae | 1375 | |
d62a17ae | 1376 | if (tb[IFLA_LINKINFO]) { |
1377 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]); | |
1fdc9eae | 1378 | |
d62a17ae | 1379 | if (linkinfo[IFLA_INFO_KIND]) |
1380 | kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]); | |
1fdc9eae | 1381 | |
d62a17ae | 1382 | if (linkinfo[IFLA_INFO_SLAVE_KIND]) |
1383 | slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]); | |
1fdc9eae | 1384 | |
d62a17ae | 1385 | netlink_determine_zebra_iftype(kind, &zif_type); |
1386 | } | |
6675513d | 1387 | |
d62a17ae | 1388 | /* If linking to another interface, note it. */ |
1389 | if (tb[IFLA_LINK]) | |
1390 | link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]); | |
1fdc9eae | 1391 | |
b1cc23b2 | 1392 | if (tb[IFLA_LINK_NETNSID]) { |
14ddb3d9 | 1393 | link_nsid = *(ns_id_t *)RTA_DATA(tb[IFLA_LINK_NETNSID]); |
b1cc23b2 PG |
1394 | link_nsid = ns_id_get_absolute(ns_id, link_nsid); |
1395 | } | |
48884c6b DS |
1396 | if (tb[IFLA_IFALIAS]) { |
1397 | desc = (char *)RTA_DATA(tb[IFLA_IFALIAS]); | |
1398 | } | |
1399 | ||
d62a17ae | 1400 | /* If VRF, create or update the VRF structure itself. */ |
78dd30b2 | 1401 | if (zif_type == ZEBRA_IF_VRF && !vrf_is_backend_netns()) { |
5e031198 | 1402 | netlink_vrf_change(h, tb[IFLA_LINKINFO], ns_id, name); |
d62a17ae | 1403 | vrf_id = (vrf_id_t)ifi->ifi_index; |
1404 | } | |
1fdc9eae | 1405 | |
d62a17ae | 1406 | /* See if interface is present. */ |
1407 | ifp = if_lookup_by_name_per_ns(zns, name); | |
1408 | ||
1409 | if (h->nlmsg_type == RTM_NEWLINK) { | |
1410 | if (tb[IFLA_MASTER]) { | |
78dd30b2 PG |
1411 | if (slave_kind && (strcmp(slave_kind, "vrf") == 0) |
1412 | && !vrf_is_backend_netns()) { | |
d62a17ae | 1413 | zif_slave_type = ZEBRA_IF_SLAVE_VRF; |
c36e442c AK |
1414 | master_infindex = vrf_id = |
1415 | *(uint32_t *)RTA_DATA(tb[IFLA_MASTER]); | |
d62a17ae | 1416 | } else if (slave_kind |
1417 | && (strcmp(slave_kind, "bridge") == 0)) { | |
1418 | zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE; | |
c36e442c | 1419 | master_infindex = bridge_ifindex = |
d62a17ae | 1420 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); |
b9368db9 DD |
1421 | } else if (slave_kind |
1422 | && (strcmp(slave_kind, "bond") == 0)) { | |
1423 | zif_slave_type = ZEBRA_IF_SLAVE_BOND; | |
c36e442c | 1424 | master_infindex = bond_ifindex = |
b9368db9 | 1425 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); |
d62a17ae | 1426 | } else |
1427 | zif_slave_type = ZEBRA_IF_SLAVE_OTHER; | |
1428 | } | |
fe533c56 PG |
1429 | if (vrf_is_backend_netns()) |
1430 | vrf_id = (vrf_id_t)ns_id; | |
d62a17ae | 1431 | if (ifp == NULL |
1432 | || !CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE)) { | |
1433 | /* Add interface notification from kernel */ | |
1434 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1435 | zlog_debug( | |
3efd0893 | 1436 | "RTM_NEWLINK ADD for %s(%u) vrf_id %u type %d sl_type %d master %u flags 0x%x", |
d62a17ae | 1437 | name, ifi->ifi_index, vrf_id, zif_type, |
c36e442c | 1438 | zif_slave_type, master_infindex, |
d62a17ae | 1439 | ifi->ifi_flags); |
1440 | ||
1441 | if (ifp == NULL) { | |
1442 | /* unknown interface */ | |
a36898e7 | 1443 | ifp = if_get_by_name(name, vrf_id); |
d62a17ae | 1444 | } else { |
1445 | /* pre-configured interface, learnt now */ | |
a36898e7 DS |
1446 | if (ifp->vrf_id != vrf_id) |
1447 | if_update_to_new_vrf(ifp, vrf_id); | |
d62a17ae | 1448 | } |
1449 | ||
1450 | /* Update interface information. */ | |
1451 | set_ifindex(ifp, ifi->ifi_index, zns); | |
1452 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
d23b983b | 1453 | if (!tb[IFLA_MTU]) { |
9df414fe | 1454 | zlog_debug( |
d23b983b SW |
1455 | "RTM_NEWLINK for interface %s(%u) without MTU set", |
1456 | name, ifi->ifi_index); | |
1457 | return 0; | |
1458 | } | |
d62a17ae | 1459 | ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]); |
1460 | ifp->metric = 0; | |
1461 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; | |
1462 | ||
1463 | /* Set interface type */ | |
1464 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); | |
b0fa6f6a CS |
1465 | if (IS_ZEBRA_IF_VRF(ifp)) |
1466 | SET_FLAG(ifp->status, | |
1467 | ZEBRA_INTERFACE_VRF_LOOPBACK); | |
d62a17ae | 1468 | |
1469 | /* Update link. */ | |
680c278f | 1470 | zebra_if_update_link(ifp, link_ifindex, ns_id); |
d62a17ae | 1471 | |
1472 | netlink_interface_update_hw_addr(tb, ifp); | |
1473 | ||
1474 | /* Inform clients, install any configured addresses. */ | |
1475 | if_add_update(ifp); | |
1476 | ||
1477 | /* Extract and save L2 interface information, take | |
1478 | * additional actions. */ | |
1479 | netlink_interface_update_l2info( | |
14ddb3d9 PG |
1480 | ifp, linkinfo[IFLA_INFO_DATA], |
1481 | 1, link_nsid); | |
d62a17ae | 1482 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp)) |
1483 | zebra_l2if_update_bridge_slave(ifp, | |
a6e0edf2 PG |
1484 | bridge_ifindex, |
1485 | ns_id); | |
b9368db9 DD |
1486 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp)) |
1487 | zebra_l2if_update_bond_slave(ifp, bond_ifindex); | |
c36e442c AK |
1488 | |
1489 | if (tb[IFLA_PROTO_DOWN]) { | |
1490 | uint8_t protodown; | |
1491 | ||
1492 | protodown = *(uint8_t *)RTA_DATA( | |
1493 | tb[IFLA_PROTO_DOWN]); | |
1494 | netlink_proc_dplane_if_protodown(ifp->info, | |
1495 | !!protodown); | |
1496 | } | |
a36898e7 | 1497 | } else if (ifp->vrf_id != vrf_id) { |
d62a17ae | 1498 | /* VRF change for an interface. */ |
1499 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1500 | zlog_debug( | |
3efd0893 | 1501 | "RTM_NEWLINK vrf-change for %s(%u) vrf_id %u -> %u flags 0x%x", |
a36898e7 DS |
1502 | name, ifp->ifindex, ifp->vrf_id, vrf_id, |
1503 | ifi->ifi_flags); | |
d62a17ae | 1504 | |
a36898e7 | 1505 | if_handle_vrf_change(ifp, vrf_id); |
d62a17ae | 1506 | } else { |
b9368db9 | 1507 | bool was_bridge_slave, was_bond_slave; |
d62a17ae | 1508 | |
1509 | /* Interface update. */ | |
1510 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1511 | zlog_debug( | |
3efd0893 | 1512 | "RTM_NEWLINK update for %s(%u) sl_type %d master %u flags 0x%x", |
d62a17ae | 1513 | name, ifp->ifindex, zif_slave_type, |
c36e442c | 1514 | master_infindex, ifi->ifi_flags); |
d62a17ae | 1515 | |
1516 | set_ifindex(ifp, ifi->ifi_index, zns); | |
d23b983b | 1517 | if (!tb[IFLA_MTU]) { |
9df414fe | 1518 | zlog_debug( |
d23b983b SW |
1519 | "RTM_NEWLINK for interface %s(%u) without MTU set", |
1520 | name, ifi->ifi_index); | |
1521 | return 0; | |
1522 | } | |
d62a17ae | 1523 | ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]); |
1524 | ifp->metric = 0; | |
1525 | ||
1526 | /* Update interface type - NOTE: Only slave_type can | |
1527 | * change. */ | |
1528 | was_bridge_slave = IS_ZEBRA_IF_BRIDGE_SLAVE(ifp); | |
b9368db9 | 1529 | was_bond_slave = IS_ZEBRA_IF_BOND_SLAVE(ifp); |
d62a17ae | 1530 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); |
1531 | ||
97c4e1d0 CS |
1532 | memcpy(old_hw_addr, ifp->hw_addr, INTERFACE_HWADDR_MAX); |
1533 | ||
d62a17ae | 1534 | netlink_interface_update_hw_addr(tb, ifp); |
1535 | ||
1536 | if (if_is_no_ptm_operative(ifp)) { | |
1537 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
1538 | if (!if_is_no_ptm_operative(ifp)) { | |
1539 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1540 | zlog_debug( | |
1541 | "Intf %s(%u) has gone DOWN", | |
1542 | name, ifp->ifindex); | |
1543 | if_down(ifp); | |
2a181147 | 1544 | rib_update(RIB_UPDATE_KERNEL); |
d62a17ae | 1545 | } else if (if_is_operative(ifp)) { |
1546 | /* Must notify client daemons of new | |
1547 | * interface status. */ | |
1548 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1549 | zlog_debug( | |
1550 | "Intf %s(%u) PTM up, notifying clients", | |
1551 | name, ifp->ifindex); | |
1552 | zebra_interface_up_update(ifp); | |
97c4e1d0 CS |
1553 | |
1554 | /* Update EVPN VNI when SVI MAC change | |
1555 | */ | |
1556 | if (IS_ZEBRA_IF_VLAN(ifp) && | |
1557 | memcmp(old_hw_addr, ifp->hw_addr, | |
1558 | INTERFACE_HWADDR_MAX)) { | |
1559 | struct interface *link_if; | |
1560 | ||
1561 | link_if = | |
1562 | if_lookup_by_index_per_ns( | |
1563 | zebra_ns_lookup(NS_DEFAULT), | |
1564 | link_ifindex); | |
1565 | if (link_if) | |
1566 | zebra_vxlan_svi_up(ifp, | |
1567 | link_if); | |
1568 | } | |
d62a17ae | 1569 | } |
1570 | } else { | |
1571 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
1572 | if (if_is_operative(ifp)) { | |
1573 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1574 | zlog_debug( | |
1575 | "Intf %s(%u) has come UP", | |
1576 | name, ifp->ifindex); | |
1577 | if_up(ifp); | |
6f908ded QY |
1578 | } else { |
1579 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1580 | zlog_debug( | |
7913714e | 1581 | "Intf %s(%u) has gone DOWN", |
6f908ded QY |
1582 | name, ifp->ifindex); |
1583 | if_down(ifp); | |
2a181147 | 1584 | rib_update(RIB_UPDATE_KERNEL); |
d62a17ae | 1585 | } |
1586 | } | |
1587 | ||
1588 | /* Extract and save L2 interface information, take | |
1589 | * additional actions. */ | |
1590 | netlink_interface_update_l2info( | |
14ddb3d9 PG |
1591 | ifp, linkinfo[IFLA_INFO_DATA], |
1592 | 0, link_nsid); | |
c36e442c AK |
1593 | if (IS_ZEBRA_IF_BOND(ifp)) |
1594 | zebra_l2if_update_bond(ifp, true); | |
d62a17ae | 1595 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp) || was_bridge_slave) |
1596 | zebra_l2if_update_bridge_slave(ifp, | |
a6e0edf2 PG |
1597 | bridge_ifindex, |
1598 | ns_id); | |
b9368db9 DD |
1599 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp) || was_bond_slave) |
1600 | zebra_l2if_update_bond_slave(ifp, bond_ifindex); | |
c36e442c AK |
1601 | |
1602 | if (tb[IFLA_PROTO_DOWN]) { | |
1603 | uint8_t protodown; | |
1604 | ||
1605 | protodown = *(uint8_t *)RTA_DATA( | |
1606 | tb[IFLA_PROTO_DOWN]); | |
1607 | netlink_proc_dplane_if_protodown(ifp->info, | |
1608 | !!protodown); | |
1609 | } | |
d62a17ae | 1610 | } |
26f13577 DS |
1611 | |
1612 | zif = ifp->info; | |
1613 | if (zif) { | |
1614 | XFREE(MTYPE_TMP, zif->desc); | |
1615 | if (desc) | |
1616 | zif->desc = XSTRDUP(MTYPE_TMP, desc); | |
1617 | } | |
d62a17ae | 1618 | } else { |
1619 | /* Delete interface notification from kernel */ | |
1620 | if (ifp == NULL) { | |
9df414fe QY |
1621 | if (IS_ZEBRA_DEBUG_KERNEL) |
1622 | zlog_debug( | |
1623 | "RTM_DELLINK for unknown interface %s(%u)", | |
1624 | name, ifi->ifi_index); | |
d62a17ae | 1625 | return 0; |
1626 | } | |
1627 | ||
1628 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1629 | zlog_debug("RTM_DELLINK for %s(%u)", name, | |
1630 | ifp->ifindex); | |
1631 | ||
1632 | UNSET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK); | |
1633 | ||
c36e442c AK |
1634 | if (IS_ZEBRA_IF_BOND(ifp)) |
1635 | zebra_l2if_update_bond(ifp, false); | |
d62a17ae | 1636 | /* Special handling for bridge or VxLAN interfaces. */ |
1637 | if (IS_ZEBRA_IF_BRIDGE(ifp)) | |
1638 | zebra_l2_bridge_del(ifp); | |
1639 | else if (IS_ZEBRA_IF_VXLAN(ifp)) | |
1640 | zebra_l2_vxlanif_del(ifp); | |
1641 | ||
1642 | if (!IS_ZEBRA_IF_VRF(ifp)) | |
1643 | if_delete_update(ifp); | |
1fdc9eae | 1644 | } |
1645 | ||
d62a17ae | 1646 | return 0; |
1fdc9eae | 1647 | } |
718e3744 | 1648 | |
c3bd894e QY |
1649 | int netlink_protodown(struct interface *ifp, bool down) |
1650 | { | |
1651 | struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT); | |
1652 | ||
1653 | struct { | |
1654 | struct nlmsghdr n; | |
1655 | struct ifinfomsg ifa; | |
1656 | char buf[NL_PKT_BUF_SIZE]; | |
1657 | } req; | |
1658 | ||
2fff50ec | 1659 | memset(&req, 0, sizeof(req)); |
c3bd894e QY |
1660 | |
1661 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
1662 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
1663 | req.n.nlmsg_type = RTM_SETLINK; | |
1664 | req.n.nlmsg_pid = zns->netlink_cmd.snl.nl_pid; | |
1665 | ||
1666 | req.ifa.ifi_index = ifp->ifindex; | |
1667 | ||
312a6bee | 1668 | nl_attr_put(&req.n, sizeof(req), IFLA_PROTO_DOWN, &down, sizeof(down)); |
a757997c | 1669 | nl_attr_put32(&req.n, sizeof(req), IFLA_LINK, ifp->ifindex); |
c3bd894e QY |
1670 | |
1671 | return netlink_talk(netlink_talk_filter, &req.n, &zns->netlink_cmd, zns, | |
1672 | 0); | |
1673 | } | |
1674 | ||
718e3744 | 1675 | /* Interface information read by netlink. */ |
d62a17ae | 1676 | void interface_list(struct zebra_ns *zns) |
718e3744 | 1677 | { |
d62a17ae | 1678 | interface_lookup_netlink(zns); |
d9f5b2f5 SW |
1679 | /* We add routes for interface address, |
1680 | * so we need to get the nexthop info | |
1681 | * from the kernel before we can do that | |
1682 | */ | |
81505946 | 1683 | netlink_nexthop_read(zns); |
cc4e0650 | 1684 | |
d2bec88a | 1685 | interface_addr_lookup_netlink(zns); |
718e3744 | 1686 | } |
ddfeb486 DL |
1687 | |
1688 | #endif /* GNU_LINUX */ |