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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" | |
1fdc9eae | 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" |
174482ef | 54 | #include "lib_errors.h" |
718e3744 | 55 | |
5e6a74d8 | 56 | #include "vty.h" |
7dbeea9d | 57 | #include "zebra/zserv.h" |
1fdc9eae | 58 | #include "zebra/zebra_ns.h" |
59 | #include "zebra/zebra_vrf.h" | |
60 | #include "zebra/rt.h" | |
61 | #include "zebra/redistribute.h" | |
62 | #include "zebra/interface.h" | |
63 | #include "zebra/debug.h" | |
64 | #include "zebra/rtadv.h" | |
65 | #include "zebra/zebra_ptm.h" | |
66 | #include "zebra/zebra_mpls.h" | |
67 | #include "zebra/kernel_netlink.h" | |
d9f5b2f5 | 68 | #include "zebra/rt_netlink.h" |
1fdc9eae | 69 | #include "zebra/if_netlink.h" |
9df414fe | 70 | #include "zebra/zebra_errors.h" |
97c4e1d0 | 71 | #include "zebra/zebra_vxlan.h" |
42b56639 | 72 | #include "zebra/zebra_evpn_mh.h" |
1fdc9eae | 73 | |
0268f30e | 74 | extern struct zebra_privs_t zserv_privs; |
1fdc9eae | 75 | |
76 | /* Note: on netlink systems, there should be a 1-to-1 mapping between interface | |
77 | names and ifindex values. */ | |
d62a17ae | 78 | static void set_ifindex(struct interface *ifp, ifindex_t ifi_index, |
79 | struct zebra_ns *zns) | |
1fdc9eae | 80 | { |
d62a17ae | 81 | struct interface *oifp; |
82 | ||
83 | if (((oifp = if_lookup_by_index_per_ns(zns, ifi_index)) != NULL) | |
84 | && (oifp != ifp)) { | |
85 | if (ifi_index == IFINDEX_INTERNAL) | |
af4c2728 | 86 | flog_err( |
450971aa | 87 | EC_LIB_INTERFACE, |
4d43f68a | 88 | "Netlink is setting interface %s ifindex to reserved internal value %u", |
d62a17ae | 89 | ifp->name, ifi_index); |
90 | else { | |
91 | if (IS_ZEBRA_DEBUG_KERNEL) | |
92 | zlog_debug( | |
93 | "interface index %d was renamed from %s to %s", | |
94 | ifi_index, oifp->name, ifp->name); | |
95 | if (if_is_up(oifp)) | |
af4c2728 | 96 | flog_err( |
450971aa | 97 | EC_LIB_INTERFACE, |
4d43f68a | 98 | "interface rename detected on up interface: index %d was renamed from %s to %s, results are uncertain!", |
d62a17ae | 99 | ifi_index, oifp->name, ifp->name); |
100 | if_delete_update(oifp); | |
101 | } | |
102 | } | |
ff880b78 | 103 | if_set_index(ifp, ifi_index); |
1fdc9eae | 104 | } |
105 | ||
106 | /* Utility function to parse hardware link-layer address and update ifp */ | |
d62a17ae | 107 | static void netlink_interface_update_hw_addr(struct rtattr **tb, |
108 | struct interface *ifp) | |
1fdc9eae | 109 | { |
d62a17ae | 110 | int i; |
111 | ||
112 | if (tb[IFLA_ADDRESS]) { | |
113 | int hw_addr_len; | |
114 | ||
115 | hw_addr_len = RTA_PAYLOAD(tb[IFLA_ADDRESS]); | |
116 | ||
117 | if (hw_addr_len > INTERFACE_HWADDR_MAX) | |
9df414fe QY |
118 | zlog_debug("Hardware address is too large: %d", |
119 | hw_addr_len); | |
d62a17ae | 120 | else { |
121 | ifp->hw_addr_len = hw_addr_len; | |
122 | memcpy(ifp->hw_addr, RTA_DATA(tb[IFLA_ADDRESS]), | |
123 | hw_addr_len); | |
124 | ||
125 | for (i = 0; i < hw_addr_len; i++) | |
126 | if (ifp->hw_addr[i] != 0) | |
127 | break; | |
128 | ||
129 | if (i == hw_addr_len) | |
130 | ifp->hw_addr_len = 0; | |
131 | else | |
132 | ifp->hw_addr_len = hw_addr_len; | |
133 | } | |
134 | } | |
1fdc9eae | 135 | } |
136 | ||
d62a17ae | 137 | static enum zebra_link_type netlink_to_zebra_link_type(unsigned int hwt) |
1fdc9eae | 138 | { |
d62a17ae | 139 | switch (hwt) { |
140 | case ARPHRD_ETHER: | |
141 | return ZEBRA_LLT_ETHER; | |
142 | case ARPHRD_EETHER: | |
143 | return ZEBRA_LLT_EETHER; | |
144 | case ARPHRD_AX25: | |
145 | return ZEBRA_LLT_AX25; | |
146 | case ARPHRD_PRONET: | |
147 | return ZEBRA_LLT_PRONET; | |
148 | case ARPHRD_IEEE802: | |
149 | return ZEBRA_LLT_IEEE802; | |
150 | case ARPHRD_ARCNET: | |
151 | return ZEBRA_LLT_ARCNET; | |
152 | case ARPHRD_APPLETLK: | |
153 | return ZEBRA_LLT_APPLETLK; | |
154 | case ARPHRD_DLCI: | |
155 | return ZEBRA_LLT_DLCI; | |
156 | case ARPHRD_ATM: | |
157 | return ZEBRA_LLT_ATM; | |
158 | case ARPHRD_METRICOM: | |
159 | return ZEBRA_LLT_METRICOM; | |
160 | case ARPHRD_IEEE1394: | |
161 | return ZEBRA_LLT_IEEE1394; | |
162 | case ARPHRD_EUI64: | |
163 | return ZEBRA_LLT_EUI64; | |
164 | case ARPHRD_INFINIBAND: | |
165 | return ZEBRA_LLT_INFINIBAND; | |
166 | case ARPHRD_SLIP: | |
167 | return ZEBRA_LLT_SLIP; | |
168 | case ARPHRD_CSLIP: | |
169 | return ZEBRA_LLT_CSLIP; | |
170 | case ARPHRD_SLIP6: | |
171 | return ZEBRA_LLT_SLIP6; | |
172 | case ARPHRD_CSLIP6: | |
173 | return ZEBRA_LLT_CSLIP6; | |
174 | case ARPHRD_RSRVD: | |
175 | return ZEBRA_LLT_RSRVD; | |
176 | case ARPHRD_ADAPT: | |
177 | return ZEBRA_LLT_ADAPT; | |
178 | case ARPHRD_ROSE: | |
179 | return ZEBRA_LLT_ROSE; | |
180 | case ARPHRD_X25: | |
181 | return ZEBRA_LLT_X25; | |
182 | case ARPHRD_PPP: | |
183 | return ZEBRA_LLT_PPP; | |
184 | case ARPHRD_CISCO: | |
185 | return ZEBRA_LLT_CHDLC; | |
186 | case ARPHRD_LAPB: | |
187 | return ZEBRA_LLT_LAPB; | |
188 | case ARPHRD_RAWHDLC: | |
189 | return ZEBRA_LLT_RAWHDLC; | |
190 | case ARPHRD_TUNNEL: | |
191 | return ZEBRA_LLT_IPIP; | |
192 | case ARPHRD_TUNNEL6: | |
193 | return ZEBRA_LLT_IPIP6; | |
194 | case ARPHRD_FRAD: | |
195 | return ZEBRA_LLT_FRAD; | |
196 | case ARPHRD_SKIP: | |
197 | return ZEBRA_LLT_SKIP; | |
198 | case ARPHRD_LOOPBACK: | |
199 | return ZEBRA_LLT_LOOPBACK; | |
200 | case ARPHRD_LOCALTLK: | |
201 | return ZEBRA_LLT_LOCALTLK; | |
202 | case ARPHRD_FDDI: | |
203 | return ZEBRA_LLT_FDDI; | |
204 | case ARPHRD_SIT: | |
205 | return ZEBRA_LLT_SIT; | |
206 | case ARPHRD_IPDDP: | |
207 | return ZEBRA_LLT_IPDDP; | |
208 | case ARPHRD_IPGRE: | |
209 | return ZEBRA_LLT_IPGRE; | |
210 | case ARPHRD_PIMREG: | |
211 | return ZEBRA_LLT_PIMREG; | |
212 | case ARPHRD_HIPPI: | |
213 | return ZEBRA_LLT_HIPPI; | |
214 | case ARPHRD_ECONET: | |
215 | return ZEBRA_LLT_ECONET; | |
216 | case ARPHRD_IRDA: | |
217 | return ZEBRA_LLT_IRDA; | |
218 | case ARPHRD_FCPP: | |
219 | return ZEBRA_LLT_FCPP; | |
220 | case ARPHRD_FCAL: | |
221 | return ZEBRA_LLT_FCAL; | |
222 | case ARPHRD_FCPL: | |
223 | return ZEBRA_LLT_FCPL; | |
224 | case ARPHRD_FCFABRIC: | |
225 | return ZEBRA_LLT_FCFABRIC; | |
226 | case ARPHRD_IEEE802_TR: | |
227 | return ZEBRA_LLT_IEEE802_TR; | |
228 | case ARPHRD_IEEE80211: | |
229 | return ZEBRA_LLT_IEEE80211; | |
4268e09e | 230 | #ifdef ARPHRD_IEEE802154 |
d62a17ae | 231 | case ARPHRD_IEEE802154: |
232 | return ZEBRA_LLT_IEEE802154; | |
4268e09e | 233 | #endif |
1fdc9eae | 234 | #ifdef ARPHRD_IP6GRE |
d62a17ae | 235 | case ARPHRD_IP6GRE: |
236 | return ZEBRA_LLT_IP6GRE; | |
1fdc9eae | 237 | #endif |
238 | #ifdef ARPHRD_IEEE802154_PHY | |
d62a17ae | 239 | case ARPHRD_IEEE802154_PHY: |
240 | return ZEBRA_LLT_IEEE802154_PHY; | |
1fdc9eae | 241 | #endif |
242 | ||
d62a17ae | 243 | default: |
244 | return ZEBRA_LLT_UNKNOWN; | |
245 | } | |
1fdc9eae | 246 | } |
247 | ||
42b56639 AK |
248 | static inline void zebra_if_set_ziftype(struct interface *ifp, |
249 | zebra_iftype_t zif_type, | |
250 | zebra_slave_iftype_t zif_slave_type) | |
251 | { | |
252 | struct zebra_if *zif; | |
253 | ||
254 | zif = (struct zebra_if *)ifp->info; | |
255 | zif->zif_slave_type = zif_slave_type; | |
256 | ||
257 | if (zif->zif_type != zif_type) { | |
258 | zif->zif_type = zif_type; | |
259 | /* If the if_type has been set to bond initialize ES info | |
260 | * against it. XXX - note that we don't handle the case where | |
261 | * a zif changes from bond to non-bond; it is really | |
262 | * an unexpected/error condition. | |
263 | */ | |
264 | zebra_evpn_if_init(zif); | |
265 | } | |
266 | } | |
267 | ||
b9368db9 DD |
268 | static void netlink_determine_zebra_iftype(const char *kind, |
269 | zebra_iftype_t *zif_type) | |
6675513d | 270 | { |
d62a17ae | 271 | *zif_type = ZEBRA_IF_OTHER; |
272 | ||
273 | if (!kind) | |
274 | return; | |
275 | ||
276 | if (strcmp(kind, "vrf") == 0) | |
277 | *zif_type = ZEBRA_IF_VRF; | |
278 | else if (strcmp(kind, "bridge") == 0) | |
279 | *zif_type = ZEBRA_IF_BRIDGE; | |
280 | else if (strcmp(kind, "vlan") == 0) | |
281 | *zif_type = ZEBRA_IF_VLAN; | |
282 | else if (strcmp(kind, "vxlan") == 0) | |
283 | *zif_type = ZEBRA_IF_VXLAN; | |
1a98c087 MK |
284 | else if (strcmp(kind, "macvlan") == 0) |
285 | *zif_type = ZEBRA_IF_MACVLAN; | |
0e4864ea PG |
286 | else if (strcmp(kind, "veth") == 0) |
287 | *zif_type = ZEBRA_IF_VETH; | |
b9368db9 DD |
288 | else if (strcmp(kind, "bond") == 0) |
289 | *zif_type = ZEBRA_IF_BOND; | |
290 | else if (strcmp(kind, "bond_slave") == 0) | |
291 | *zif_type = ZEBRA_IF_BOND_SLAVE; | |
6675513d | 292 | } |
52d8f0d8 | 293 | |
d62a17ae | 294 | #define parse_rtattr_nested(tb, max, rta) \ |
295 | netlink_parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)) | |
1fdc9eae | 296 | |
d62a17ae | 297 | static void netlink_vrf_change(struct nlmsghdr *h, struct rtattr *tb, |
5e031198 | 298 | uint32_t ns_id, const char *name) |
1fdc9eae | 299 | { |
d62a17ae | 300 | struct ifinfomsg *ifi; |
301 | struct rtattr *linkinfo[IFLA_INFO_MAX + 1]; | |
302 | struct rtattr *attr[IFLA_VRF_MAX + 1]; | |
75d26fb3 | 303 | struct vrf *vrf = NULL; |
d62a17ae | 304 | struct zebra_vrf *zvrf; |
d7c0a89a | 305 | uint32_t nl_table_id; |
d62a17ae | 306 | |
307 | ifi = NLMSG_DATA(h); | |
308 | ||
0d6f7fd6 | 309 | memset(linkinfo, 0, sizeof(linkinfo)); |
d62a17ae | 310 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb); |
311 | ||
312 | if (!linkinfo[IFLA_INFO_DATA]) { | |
313 | if (IS_ZEBRA_DEBUG_KERNEL) | |
314 | zlog_debug( | |
315 | "%s: IFLA_INFO_DATA missing from VRF message: %s", | |
316 | __func__, name); | |
317 | return; | |
318 | } | |
319 | ||
0d6f7fd6 | 320 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 321 | parse_rtattr_nested(attr, IFLA_VRF_MAX, linkinfo[IFLA_INFO_DATA]); |
322 | if (!attr[IFLA_VRF_TABLE]) { | |
323 | if (IS_ZEBRA_DEBUG_KERNEL) | |
324 | zlog_debug( | |
325 | "%s: IFLA_VRF_TABLE missing from VRF message: %s", | |
326 | __func__, name); | |
327 | return; | |
1fdc9eae | 328 | } |
329 | ||
d7c0a89a | 330 | nl_table_id = *(uint32_t *)RTA_DATA(attr[IFLA_VRF_TABLE]); |
d62a17ae | 331 | |
332 | if (h->nlmsg_type == RTM_NEWLINK) { | |
333 | if (IS_ZEBRA_DEBUG_KERNEL) | |
334 | zlog_debug("RTM_NEWLINK for VRF %s(%u) table %u", name, | |
335 | ifi->ifi_index, nl_table_id); | |
336 | ||
2e86d16d RW |
337 | if (!vrf_lookup_by_id((vrf_id_t)ifi->ifi_index)) { |
338 | vrf_id_t exist_id; | |
5e031198 | 339 | |
2e86d16d RW |
340 | exist_id = vrf_lookup_by_table(nl_table_id, ns_id); |
341 | if (exist_id != VRF_DEFAULT) { | |
342 | vrf = vrf_lookup_by_id(exist_id); | |
343 | ||
344 | flog_err( | |
345 | EC_ZEBRA_VRF_MISCONFIGURED, | |
346 | "VRF %s id %u table id overlaps existing vrf %s, misconfiguration exiting", | |
347 | name, ifi->ifi_index, vrf->name); | |
348 | exit(-1); | |
349 | } | |
5e031198 | 350 | } |
2e86d16d | 351 | |
75d26fb3 | 352 | vrf = vrf_update((vrf_id_t)ifi->ifi_index, name); |
d62a17ae | 353 | if (!vrf) { |
450971aa | 354 | flog_err(EC_LIB_INTERFACE, "VRF %s id %u not created", |
1c50c1c0 | 355 | name, ifi->ifi_index); |
d62a17ae | 356 | return; |
357 | } | |
358 | ||
d62a17ae | 359 | /* |
360 | * This is the only place that we get the actual kernel table_id | |
361 | * being used. We need it to set the table_id of the routes | |
362 | * we are passing to the kernel.... And to throw some totally | |
363 | * awesome parties. that too. | |
593406a1 DS |
364 | * |
365 | * At this point we *must* have a zvrf because the vrf_create | |
366 | * callback creates one. We *must* set the table id | |
367 | * before the vrf_enable because of( at the very least ) | |
368 | * static routes being delayed for installation until | |
369 | * during the vrf_enable callbacks. | |
d62a17ae | 370 | */ |
371 | zvrf = (struct zebra_vrf *)vrf->info; | |
372 | zvrf->table_id = nl_table_id; | |
593406a1 DS |
373 | |
374 | /* Enable the created VRF. */ | |
375 | if (!vrf_enable(vrf)) { | |
450971aa | 376 | flog_err(EC_LIB_INTERFACE, |
1c50c1c0 QY |
377 | "Failed to enable VRF %s id %u", name, |
378 | ifi->ifi_index); | |
593406a1 DS |
379 | return; |
380 | } | |
381 | ||
d62a17ae | 382 | } else // h->nlmsg_type == RTM_DELLINK |
383 | { | |
384 | if (IS_ZEBRA_DEBUG_KERNEL) | |
385 | zlog_debug("RTM_DELLINK for VRF %s(%u)", name, | |
386 | ifi->ifi_index); | |
387 | ||
388 | vrf = vrf_lookup_by_id((vrf_id_t)ifi->ifi_index); | |
389 | ||
390 | if (!vrf) { | |
e914ccbe | 391 | flog_warn(EC_ZEBRA_VRF_NOT_FOUND, "%s: vrf not found", |
9df414fe | 392 | __func__); |
d62a17ae | 393 | return; |
394 | } | |
395 | ||
396 | vrf_delete(vrf); | |
397 | } | |
1fdc9eae | 398 | } |
399 | ||
67188ca2 | 400 | static uint32_t get_iflink_speed(struct interface *interface, int *error) |
535fe877 | 401 | { |
d62a17ae | 402 | struct ifreq ifdata; |
403 | struct ethtool_cmd ecmd; | |
404 | int sd; | |
405 | int rc; | |
0268f30e | 406 | const char *ifname = interface->name; |
d62a17ae | 407 | |
594c2878 JF |
408 | if (error) |
409 | *error = 0; | |
d62a17ae | 410 | /* initialize struct */ |
411 | memset(&ifdata, 0, sizeof(ifdata)); | |
412 | ||
413 | /* set interface name */ | |
0af35d90 | 414 | strlcpy(ifdata.ifr_name, ifname, sizeof(ifdata.ifr_name)); |
d62a17ae | 415 | |
416 | /* initialize ethtool interface */ | |
417 | memset(&ecmd, 0, sizeof(ecmd)); | |
418 | ecmd.cmd = ETHTOOL_GSET; /* ETHTOOL_GLINK */ | |
ba85366a | 419 | ifdata.ifr_data = (caddr_t)&ecmd; |
d62a17ae | 420 | |
421 | /* use ioctl to get IP address of an interface */ | |
0cf6db21 | 422 | frr_with_privs(&zserv_privs) { |
01b9e3fd | 423 | sd = vrf_socket(PF_INET, SOCK_DGRAM, IPPROTO_IP, |
a36898e7 | 424 | interface->vrf_id, |
01b9e3fd DL |
425 | NULL); |
426 | if (sd < 0) { | |
427 | if (IS_ZEBRA_DEBUG_KERNEL) | |
428 | zlog_debug("Failure to read interface %s speed: %d %s", | |
429 | ifname, errno, safe_strerror(errno)); | |
594c2878 JF |
430 | /* no vrf socket creation may probably mean vrf issue */ |
431 | if (error) | |
432 | *error = -1; | |
01b9e3fd DL |
433 | return 0; |
434 | } | |
d62a17ae | 435 | /* Get the current link state for the interface */ |
a36898e7 | 436 | rc = vrf_ioctl(interface->vrf_id, sd, SIOCETHTOOL, |
633fc9b1 | 437 | (char *)&ifdata); |
01b9e3fd | 438 | } |
d62a17ae | 439 | if (rc < 0) { |
f767cee4 | 440 | if (errno != EOPNOTSUPP && IS_ZEBRA_DEBUG_KERNEL) |
bd7d0299 DS |
441 | zlog_debug( |
442 | "IOCTL failure to read interface %s speed: %d %s", | |
443 | ifname, errno, safe_strerror(errno)); | |
594c2878 JF |
444 | /* no device means interface unreachable */ |
445 | if (errno == ENODEV && error) | |
446 | *error = -1; | |
d62a17ae | 447 | ecmd.speed_hi = 0; |
448 | ecmd.speed = 0; | |
449 | } | |
450 | ||
451 | close(sd); | |
452 | ||
67188ca2 | 453 | return ((uint32_t)ecmd.speed_hi << 16) | ecmd.speed; |
535fe877 DS |
454 | } |
455 | ||
594c2878 | 456 | uint32_t kernel_get_speed(struct interface *ifp, int *error) |
dc7b3cae | 457 | { |
594c2878 | 458 | return get_iflink_speed(ifp, error); |
dc7b3cae DS |
459 | } |
460 | ||
d62a17ae | 461 | static int netlink_extract_bridge_info(struct rtattr *link_data, |
462 | struct zebra_l2info_bridge *bridge_info) | |
6675513d | 463 | { |
d62a17ae | 464 | struct rtattr *attr[IFLA_BR_MAX + 1]; |
465 | ||
466 | memset(bridge_info, 0, sizeof(*bridge_info)); | |
0d6f7fd6 | 467 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 468 | parse_rtattr_nested(attr, IFLA_BR_MAX, link_data); |
469 | if (attr[IFLA_BR_VLAN_FILTERING]) | |
470 | bridge_info->vlan_aware = | |
d7c0a89a | 471 | *(uint8_t *)RTA_DATA(attr[IFLA_BR_VLAN_FILTERING]); |
d62a17ae | 472 | return 0; |
6675513d | 473 | } |
474 | ||
d62a17ae | 475 | static int netlink_extract_vlan_info(struct rtattr *link_data, |
476 | struct zebra_l2info_vlan *vlan_info) | |
6675513d | 477 | { |
d62a17ae | 478 | struct rtattr *attr[IFLA_VLAN_MAX + 1]; |
479 | vlanid_t vid_in_msg; | |
480 | ||
481 | memset(vlan_info, 0, sizeof(*vlan_info)); | |
0d6f7fd6 | 482 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 483 | parse_rtattr_nested(attr, IFLA_VLAN_MAX, link_data); |
484 | if (!attr[IFLA_VLAN_ID]) { | |
485 | if (IS_ZEBRA_DEBUG_KERNEL) | |
486 | zlog_debug("IFLA_VLAN_ID missing from VLAN IF message"); | |
487 | return -1; | |
488 | } | |
489 | ||
490 | vid_in_msg = *(vlanid_t *)RTA_DATA(attr[IFLA_VLAN_ID]); | |
491 | vlan_info->vid = vid_in_msg; | |
492 | return 0; | |
6675513d | 493 | } |
494 | ||
d62a17ae | 495 | static int netlink_extract_vxlan_info(struct rtattr *link_data, |
496 | struct zebra_l2info_vxlan *vxl_info) | |
6675513d | 497 | { |
d62a17ae | 498 | struct rtattr *attr[IFLA_VXLAN_MAX + 1]; |
499 | vni_t vni_in_msg; | |
500 | struct in_addr vtep_ip_in_msg; | |
14ddb3d9 | 501 | ifindex_t ifindex_link; |
d62a17ae | 502 | |
503 | memset(vxl_info, 0, sizeof(*vxl_info)); | |
0d6f7fd6 | 504 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 505 | parse_rtattr_nested(attr, IFLA_VXLAN_MAX, link_data); |
506 | if (!attr[IFLA_VXLAN_ID]) { | |
507 | if (IS_ZEBRA_DEBUG_KERNEL) | |
508 | zlog_debug( | |
509 | "IFLA_VXLAN_ID missing from VXLAN IF message"); | |
510 | return -1; | |
511 | } | |
512 | ||
513 | vni_in_msg = *(vni_t *)RTA_DATA(attr[IFLA_VXLAN_ID]); | |
514 | vxl_info->vni = vni_in_msg; | |
515 | if (!attr[IFLA_VXLAN_LOCAL]) { | |
516 | if (IS_ZEBRA_DEBUG_KERNEL) | |
517 | zlog_debug( | |
518 | "IFLA_VXLAN_LOCAL missing from VXLAN IF message"); | |
519 | } else { | |
520 | vtep_ip_in_msg = | |
521 | *(struct in_addr *)RTA_DATA(attr[IFLA_VXLAN_LOCAL]); | |
522 | vxl_info->vtep_ip = vtep_ip_in_msg; | |
523 | } | |
524 | ||
d7fe235c AK |
525 | if (attr[IFLA_VXLAN_GROUP]) { |
526 | vxl_info->mcast_grp = | |
527 | *(struct in_addr *)RTA_DATA(attr[IFLA_VXLAN_GROUP]); | |
528 | } | |
529 | ||
14ddb3d9 PG |
530 | if (!attr[IFLA_VXLAN_LINK]) { |
531 | if (IS_ZEBRA_DEBUG_KERNEL) | |
3efd0893 | 532 | zlog_debug("IFLA_VXLAN_LINK missing from VXLAN IF message"); |
14ddb3d9 PG |
533 | } else { |
534 | ifindex_link = | |
535 | *(ifindex_t *)RTA_DATA(attr[IFLA_VXLAN_LINK]); | |
536 | vxl_info->ifindex_link = ifindex_link; | |
537 | } | |
d62a17ae | 538 | return 0; |
6675513d | 539 | } |
540 | ||
541 | /* | |
542 | * Extract and save L2 params (of interest) for an interface. When a | |
543 | * bridge interface is added or updated, take further actions to map | |
544 | * its members. Likewise, for VxLAN interface. | |
545 | */ | |
d62a17ae | 546 | static void netlink_interface_update_l2info(struct interface *ifp, |
14ddb3d9 PG |
547 | struct rtattr *link_data, int add, |
548 | ns_id_t link_nsid) | |
6675513d | 549 | { |
d62a17ae | 550 | if (!link_data) |
551 | return; | |
552 | ||
553 | if (IS_ZEBRA_IF_BRIDGE(ifp)) { | |
554 | struct zebra_l2info_bridge bridge_info; | |
555 | ||
556 | netlink_extract_bridge_info(link_data, &bridge_info); | |
557 | zebra_l2_bridge_add_update(ifp, &bridge_info, add); | |
558 | } else if (IS_ZEBRA_IF_VLAN(ifp)) { | |
559 | struct zebra_l2info_vlan vlan_info; | |
560 | ||
561 | netlink_extract_vlan_info(link_data, &vlan_info); | |
562 | zebra_l2_vlanif_update(ifp, &vlan_info); | |
243b74ed AK |
563 | zebra_evpn_acc_bd_svi_set(ifp->info, NULL, |
564 | !!if_is_operative(ifp)); | |
d62a17ae | 565 | } else if (IS_ZEBRA_IF_VXLAN(ifp)) { |
566 | struct zebra_l2info_vxlan vxlan_info; | |
567 | ||
568 | netlink_extract_vxlan_info(link_data, &vxlan_info); | |
14ddb3d9 | 569 | vxlan_info.link_nsid = link_nsid; |
d62a17ae | 570 | zebra_l2_vxlanif_add_update(ifp, &vxlan_info, add); |
14ddb3d9 PG |
571 | if (link_nsid != NS_UNKNOWN && |
572 | vxlan_info.ifindex_link) | |
573 | zebra_if_update_link(ifp, vxlan_info.ifindex_link, | |
574 | link_nsid); | |
d62a17ae | 575 | } |
6675513d | 576 | } |
577 | ||
42b56639 AK |
578 | static int netlink_bridge_vxlan_update(struct interface *ifp, |
579 | struct rtattr *af_spec) | |
580 | { | |
581 | struct rtattr *aftb[IFLA_BRIDGE_MAX + 1]; | |
582 | struct bridge_vlan_info *vinfo; | |
583 | vlanid_t access_vlan; | |
584 | ||
585 | /* There is a 1-to-1 mapping of VLAN to VxLAN - hence | |
586 | * only 1 access VLAN is accepted. | |
587 | */ | |
588 | memset(aftb, 0, sizeof(aftb)); | |
589 | parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, af_spec); | |
590 | if (!aftb[IFLA_BRIDGE_VLAN_INFO]) | |
591 | return 0; | |
592 | ||
593 | vinfo = RTA_DATA(aftb[IFLA_BRIDGE_VLAN_INFO]); | |
594 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_PVID)) | |
595 | return 0; | |
596 | ||
597 | access_vlan = (vlanid_t)vinfo->vid; | |
598 | if (IS_ZEBRA_DEBUG_KERNEL) | |
599 | zlog_debug("Access VLAN %u for VxLAN IF %s(%u)", access_vlan, | |
600 | ifp->name, ifp->ifindex); | |
601 | zebra_l2_vxlanif_update_access_vlan(ifp, access_vlan); | |
602 | return 0; | |
603 | } | |
604 | ||
605 | static void netlink_bridge_vlan_update(struct interface *ifp, | |
606 | struct rtattr *af_spec) | |
607 | { | |
608 | struct rtattr *i; | |
609 | int rem; | |
610 | uint16_t vid_range_start = 0; | |
611 | struct zebra_if *zif; | |
612 | bitfield_t old_vlan_bitmap; | |
613 | struct bridge_vlan_info *vinfo; | |
614 | ||
615 | zif = (struct zebra_if *)ifp->info; | |
616 | ||
617 | /* cache the old bitmap addrs */ | |
618 | old_vlan_bitmap = zif->vlan_bitmap; | |
619 | /* create a new bitmap space for re-eval */ | |
620 | bf_init(zif->vlan_bitmap, IF_VLAN_BITMAP_MAX); | |
621 | ||
622 | for (i = RTA_DATA(af_spec), rem = RTA_PAYLOAD(af_spec); | |
623 | RTA_OK(i, rem); i = RTA_NEXT(i, rem)) { | |
624 | ||
625 | if (i->rta_type != IFLA_BRIDGE_VLAN_INFO) | |
626 | continue; | |
627 | ||
628 | vinfo = RTA_DATA(i); | |
629 | ||
630 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { | |
631 | vid_range_start = vinfo->vid; | |
632 | continue; | |
633 | } | |
634 | ||
635 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END)) | |
636 | vid_range_start = vinfo->vid; | |
637 | ||
638 | zebra_vlan_bitmap_compute(ifp, vid_range_start, vinfo->vid); | |
639 | } | |
640 | ||
641 | zebra_vlan_mbr_re_eval(ifp, old_vlan_bitmap); | |
642 | ||
643 | bf_free(old_vlan_bitmap); | |
644 | } | |
645 | ||
d62a17ae | 646 | static int netlink_bridge_interface(struct nlmsghdr *h, int len, ns_id_t ns_id, |
647 | int startup) | |
6675513d | 648 | { |
d62a17ae | 649 | char *name = NULL; |
650 | struct ifinfomsg *ifi; | |
651 | struct rtattr *tb[IFLA_MAX + 1]; | |
652 | struct interface *ifp; | |
42b56639 AK |
653 | struct zebra_if *zif; |
654 | struct rtattr *af_spec; | |
d62a17ae | 655 | |
656 | /* Fetch name and ifindex */ | |
657 | ifi = NLMSG_DATA(h); | |
0d6f7fd6 | 658 | memset(tb, 0, sizeof(tb)); |
d62a17ae | 659 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
660 | ||
661 | if (tb[IFLA_IFNAME] == NULL) | |
662 | return -1; | |
663 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
664 | ||
665 | /* The interface should already be known, if not discard. */ | |
666 | ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(ns_id), ifi->ifi_index); | |
667 | if (!ifp) { | |
9df414fe QY |
668 | zlog_debug("Cannot find bridge IF %s(%u)", name, |
669 | ifi->ifi_index); | |
d62a17ae | 670 | return 0; |
671 | } | |
d62a17ae | 672 | |
673 | /* We are only interested in the access VLAN i.e., AF_SPEC */ | |
42b56639 AK |
674 | af_spec = tb[IFLA_AF_SPEC]; |
675 | if (!af_spec) | |
676 | return 0; | |
d62a17ae | 677 | |
42b56639 AK |
678 | if (IS_ZEBRA_IF_VXLAN(ifp)) |
679 | return netlink_bridge_vxlan_update(ifp, af_spec); | |
d62a17ae | 680 | |
42b56639 AK |
681 | /* build vlan bitmap associated with this interface if that |
682 | * device type is interested in the vlans | |
683 | */ | |
684 | zif = (struct zebra_if *)ifp->info; | |
685 | if (bf_is_inited(zif->vlan_bitmap)) | |
686 | netlink_bridge_vlan_update(ifp, af_spec); | |
d62a17ae | 687 | |
d62a17ae | 688 | return 0; |
6675513d | 689 | } |
690 | ||
2bcf92e1 | 691 | /* If the interface is an es bond member then it must follow EVPN's |
c36e442c AK |
692 | * protodown setting |
693 | */ | |
694 | static void netlink_proc_dplane_if_protodown(struct zebra_if *zif, | |
695 | bool protodown) | |
696 | { | |
697 | bool zif_protodown; | |
698 | ||
699 | zif_protodown = !!(zif->flags & ZIF_FLAG_PROTODOWN); | |
700 | if (protodown == zif_protodown) | |
701 | return; | |
702 | ||
703 | if (IS_ZEBRA_DEBUG_EVPN_MH_ES || IS_ZEBRA_DEBUG_KERNEL) | |
704 | zlog_debug("interface %s dplane change, protdown %s", | |
705 | zif->ifp->name, protodown ? "on" : "off"); | |
706 | ||
707 | if (zebra_evpn_is_es_bond_member(zif->ifp)) { | |
708 | if (IS_ZEBRA_DEBUG_EVPN_MH_ES || IS_ZEBRA_DEBUG_KERNEL) | |
709 | zlog_debug( | |
710 | "bond mbr %s re-instate protdown %s in the dplane", | |
711 | zif->ifp->name, zif_protodown ? "on" : "off"); | |
712 | netlink_protodown(zif->ifp, zif_protodown); | |
713 | } else { | |
714 | if (protodown) | |
715 | zif->flags |= ZIF_FLAG_PROTODOWN; | |
716 | else | |
717 | zif->flags &= ~ZIF_FLAG_PROTODOWN; | |
718 | } | |
719 | } | |
720 | ||
00a7710c AK |
721 | static uint8_t netlink_parse_lacp_bypass(struct rtattr **linkinfo) |
722 | { | |
723 | uint8_t bypass = 0; | |
724 | struct rtattr *mbrinfo[IFLA_BOND_SLAVE_MAX + 1]; | |
725 | ||
3f589fa8 | 726 | memset(mbrinfo, 0, sizeof(mbrinfo)); |
00a7710c AK |
727 | parse_rtattr_nested(mbrinfo, IFLA_BOND_SLAVE_MAX, |
728 | linkinfo[IFLA_INFO_SLAVE_DATA]); | |
729 | if (mbrinfo[IFLA_BOND_SLAVE_AD_RX_BYPASS]) | |
730 | bypass = *(uint8_t *)RTA_DATA( | |
731 | mbrinfo[IFLA_BOND_SLAVE_AD_RX_BYPASS]); | |
732 | ||
733 | return bypass; | |
734 | } | |
735 | ||
2414abd3 DS |
736 | /* |
737 | * Called from interface_lookup_netlink(). This function is only used | |
738 | * during bootstrap. | |
739 | */ | |
740 | static int netlink_interface(struct nlmsghdr *h, ns_id_t ns_id, int startup) | |
1fdc9eae | 741 | { |
d62a17ae | 742 | int len; |
743 | struct ifinfomsg *ifi; | |
744 | struct rtattr *tb[IFLA_MAX + 1]; | |
745 | struct rtattr *linkinfo[IFLA_MAX + 1]; | |
746 | struct interface *ifp; | |
747 | char *name = NULL; | |
748 | char *kind = NULL; | |
48884c6b | 749 | char *desc = NULL; |
d62a17ae | 750 | char *slave_kind = NULL; |
ea7ec261 | 751 | struct zebra_ns *zns = NULL; |
d62a17ae | 752 | vrf_id_t vrf_id = VRF_DEFAULT; |
753 | zebra_iftype_t zif_type = ZEBRA_IF_OTHER; | |
754 | zebra_slave_iftype_t zif_slave_type = ZEBRA_IF_SLAVE_NONE; | |
755 | ifindex_t bridge_ifindex = IFINDEX_INTERNAL; | |
756 | ifindex_t link_ifindex = IFINDEX_INTERNAL; | |
b9368db9 | 757 | ifindex_t bond_ifindex = IFINDEX_INTERNAL; |
520ebf72 | 758 | struct zebra_if *zif; |
14ddb3d9 | 759 | ns_id_t link_nsid = ns_id; |
00a7710c | 760 | uint8_t bypass = 0; |
d62a17ae | 761 | |
762 | zns = zebra_ns_lookup(ns_id); | |
763 | ifi = NLMSG_DATA(h); | |
764 | ||
765 | if (h->nlmsg_type != RTM_NEWLINK) | |
766 | return 0; | |
767 | ||
768 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
9bdf8618 | 769 | if (len < 0) { |
15569c58 DA |
770 | zlog_err( |
771 | "%s: Message received from netlink is of a broken size: %d %zu", | |
772 | __func__, h->nlmsg_len, | |
773 | (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg))); | |
d62a17ae | 774 | return -1; |
9bdf8618 | 775 | } |
d62a17ae | 776 | |
777 | /* We are interested in some AF_BRIDGE notifications. */ | |
778 | if (ifi->ifi_family == AF_BRIDGE) | |
779 | return netlink_bridge_interface(h, len, ns_id, startup); | |
780 | ||
781 | /* Looking up interface name. */ | |
0d6f7fd6 DA |
782 | memset(tb, 0, sizeof(tb)); |
783 | memset(linkinfo, 0, sizeof(linkinfo)); | |
d62a17ae | 784 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
1fdc9eae | 785 | |
d62a17ae | 786 | /* check for wireless messages to ignore */ |
787 | if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0)) { | |
788 | if (IS_ZEBRA_DEBUG_KERNEL) | |
789 | zlog_debug("%s: ignoring IFLA_WIRELESS message", | |
790 | __func__); | |
791 | return 0; | |
792 | } | |
1fdc9eae | 793 | |
d62a17ae | 794 | if (tb[IFLA_IFNAME] == NULL) |
795 | return -1; | |
796 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
1fdc9eae | 797 | |
48884c6b DS |
798 | if (tb[IFLA_IFALIAS]) |
799 | desc = (char *)RTA_DATA(tb[IFLA_IFALIAS]); | |
800 | ||
d62a17ae | 801 | if (tb[IFLA_LINKINFO]) { |
802 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]); | |
1fdc9eae | 803 | |
d62a17ae | 804 | if (linkinfo[IFLA_INFO_KIND]) |
805 | kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]); | |
1fdc9eae | 806 | |
d62a17ae | 807 | if (linkinfo[IFLA_INFO_SLAVE_KIND]) |
808 | slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]); | |
1fdc9eae | 809 | |
b9368db9 DD |
810 | if ((slave_kind != NULL) && strcmp(slave_kind, "bond") == 0) |
811 | netlink_determine_zebra_iftype("bond_slave", &zif_type); | |
812 | else | |
813 | netlink_determine_zebra_iftype(kind, &zif_type); | |
d62a17ae | 814 | } |
815 | ||
816 | /* If VRF, create the VRF structure itself. */ | |
78dd30b2 | 817 | if (zif_type == ZEBRA_IF_VRF && !vrf_is_backend_netns()) { |
5e031198 | 818 | netlink_vrf_change(h, tb[IFLA_LINKINFO], ns_id, name); |
d62a17ae | 819 | vrf_id = (vrf_id_t)ifi->ifi_index; |
820 | } | |
821 | ||
822 | if (tb[IFLA_MASTER]) { | |
78dd30b2 PG |
823 | if (slave_kind && (strcmp(slave_kind, "vrf") == 0) |
824 | && !vrf_is_backend_netns()) { | |
d62a17ae | 825 | zif_slave_type = ZEBRA_IF_SLAVE_VRF; |
d7c0a89a | 826 | vrf_id = *(uint32_t *)RTA_DATA(tb[IFLA_MASTER]); |
d62a17ae | 827 | } else if (slave_kind && (strcmp(slave_kind, "bridge") == 0)) { |
828 | zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE; | |
829 | bridge_ifindex = | |
830 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
b9368db9 DD |
831 | } else if (slave_kind && (strcmp(slave_kind, "bond") == 0)) { |
832 | zif_slave_type = ZEBRA_IF_SLAVE_BOND; | |
833 | bond_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
00a7710c | 834 | bypass = netlink_parse_lacp_bypass(linkinfo); |
d62a17ae | 835 | } else |
836 | zif_slave_type = ZEBRA_IF_SLAVE_OTHER; | |
837 | } | |
78dd30b2 PG |
838 | if (vrf_is_backend_netns()) |
839 | vrf_id = (vrf_id_t)ns_id; | |
a36898e7 | 840 | |
d62a17ae | 841 | /* If linking to another interface, note it. */ |
842 | if (tb[IFLA_LINK]) | |
843 | link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]); | |
844 | ||
b1cc23b2 | 845 | if (tb[IFLA_LINK_NETNSID]) { |
14ddb3d9 | 846 | link_nsid = *(ns_id_t *)RTA_DATA(tb[IFLA_LINK_NETNSID]); |
b1cc23b2 PG |
847 | link_nsid = ns_id_get_absolute(ns_id, link_nsid); |
848 | } | |
14ddb3d9 | 849 | |
ea7ec261 DD |
850 | /* Add interface. |
851 | * We add by index first because in some cases such as the master | |
852 | * interface, we have the index before we have the name. Fixing | |
853 | * back references on the slave interfaces is painful if not done | |
854 | * this way, i.e. by creating by ifindex. | |
855 | */ | |
bd23c840 | 856 | ifp = if_get_by_ifindex(ifi->ifi_index, vrf_id); |
ea7ec261 | 857 | set_ifindex(ifp, ifi->ifi_index, zns); /* add it to ns struct */ |
d5c65bf1 | 858 | |
bd23c840 PR |
859 | if_set_name(ifp, name); |
860 | ||
d62a17ae | 861 | ifp->flags = ifi->ifi_flags & 0x0000fffff; |
d62a17ae | 862 | ifp->mtu6 = ifp->mtu = *(uint32_t *)RTA_DATA(tb[IFLA_MTU]); |
863 | ifp->metric = 0; | |
594c2878 | 864 | ifp->speed = get_iflink_speed(ifp, NULL); |
d62a17ae | 865 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; |
866 | ||
867 | /* Set zebra interface type */ | |
868 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); | |
b0fa6f6a CS |
869 | if (IS_ZEBRA_IF_VRF(ifp)) |
870 | SET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK); | |
d62a17ae | 871 | |
98efddf1 DS |
872 | /* |
873 | * Just set the @link/lower-device ifindex. During nldump interfaces are | |
520ebf72 AK |
874 | * not ordered in any fashion so we may end up getting upper devices |
875 | * before lower devices. We will setup the real linkage once the dump | |
98efddf1 DS |
876 | * is complete. |
877 | */ | |
520ebf72 AK |
878 | zif = (struct zebra_if *)ifp->info; |
879 | zif->link_ifindex = link_ifindex; | |
d62a17ae | 880 | |
ba5165ec DS |
881 | if (desc) { |
882 | XFREE(MTYPE_TMP, zif->desc); | |
883 | zif->desc = XSTRDUP(MTYPE_TMP, desc); | |
884 | } | |
885 | ||
d62a17ae | 886 | /* Hardware type and address. */ |
887 | ifp->ll_type = netlink_to_zebra_link_type(ifi->ifi_type); | |
888 | netlink_interface_update_hw_addr(tb, ifp); | |
889 | ||
890 | if_add_update(ifp); | |
891 | ||
892 | /* Extract and save L2 interface information, take additional actions. | |
893 | */ | |
14ddb3d9 PG |
894 | netlink_interface_update_l2info(ifp, linkinfo[IFLA_INFO_DATA], |
895 | 1, link_nsid); | |
c36e442c AK |
896 | if (IS_ZEBRA_IF_BOND(ifp)) |
897 | zebra_l2if_update_bond(ifp, true); | |
d62a17ae | 898 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp)) |
a6e0edf2 | 899 | zebra_l2if_update_bridge_slave(ifp, bridge_ifindex, ns_id); |
b9368db9 | 900 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp)) |
00a7710c | 901 | zebra_l2if_update_bond_slave(ifp, bond_ifindex, !!bypass); |
d62a17ae | 902 | |
c36e442c AK |
903 | if (tb[IFLA_PROTO_DOWN]) { |
904 | uint8_t protodown; | |
905 | ||
906 | protodown = *(uint8_t *)RTA_DATA(tb[IFLA_PROTO_DOWN]); | |
907 | netlink_proc_dplane_if_protodown(zif, !!protodown); | |
908 | } | |
909 | ||
d62a17ae | 910 | return 0; |
1fdc9eae | 911 | } |
912 | ||
289602d7 | 913 | /* Request for specific interface or address information from the kernel */ |
85a75f1e MS |
914 | static int netlink_request_intf_addr(struct nlsock *netlink_cmd, int family, |
915 | int type, uint32_t filter_mask) | |
289602d7 | 916 | { |
d62a17ae | 917 | struct { |
918 | struct nlmsghdr n; | |
919 | struct ifinfomsg ifm; | |
920 | char buf[256]; | |
921 | } req; | |
922 | ||
923 | /* Form the request, specifying filter (rtattr) if needed. */ | |
924 | memset(&req, 0, sizeof(req)); | |
925 | req.n.nlmsg_type = type; | |
718f9b0f | 926 | req.n.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST; |
d62a17ae | 927 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
928 | req.ifm.ifi_family = family; | |
929 | ||
930 | /* Include filter, if specified. */ | |
931 | if (filter_mask) | |
312a6bee | 932 | nl_attr_put32(&req.n, sizeof(req), IFLA_EXT_MASK, filter_mask); |
d62a17ae | 933 | |
fd3f8e52 | 934 | return netlink_request(netlink_cmd, &req); |
289602d7 | 935 | } |
936 | ||
1fdc9eae | 937 | /* Interface lookup by netlink socket. */ |
d62a17ae | 938 | int interface_lookup_netlink(struct zebra_ns *zns) |
1fdc9eae | 939 | { |
d62a17ae | 940 | int ret; |
85a75f1e MS |
941 | struct zebra_dplane_info dp_info; |
942 | struct nlsock *netlink_cmd = &zns->netlink_cmd; | |
943 | ||
944 | /* Capture key info from ns struct */ | |
945 | zebra_dplane_info_from_zns(&dp_info, zns, true /*is_cmd*/); | |
d62a17ae | 946 | |
947 | /* Get interface information. */ | |
85a75f1e | 948 | ret = netlink_request_intf_addr(netlink_cmd, AF_PACKET, RTM_GETLINK, 0); |
d62a17ae | 949 | if (ret < 0) |
950 | return ret; | |
85a75f1e | 951 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, |
d62a17ae | 952 | 1); |
953 | if (ret < 0) | |
954 | return ret; | |
955 | ||
956 | /* Get interface information - for bridge interfaces. */ | |
85a75f1e | 957 | ret = netlink_request_intf_addr(netlink_cmd, AF_BRIDGE, RTM_GETLINK, |
d62a17ae | 958 | RTEXT_FILTER_BRVLAN); |
959 | if (ret < 0) | |
960 | return ret; | |
85a75f1e | 961 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, |
d62a17ae | 962 | 0); |
963 | if (ret < 0) | |
964 | return ret; | |
965 | ||
966 | /* Get interface information - for bridge interfaces. */ | |
85a75f1e | 967 | ret = netlink_request_intf_addr(netlink_cmd, AF_BRIDGE, RTM_GETLINK, |
d62a17ae | 968 | RTEXT_FILTER_BRVLAN); |
969 | if (ret < 0) | |
970 | return ret; | |
85a75f1e | 971 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, |
d62a17ae | 972 | 0); |
973 | if (ret < 0) | |
974 | return ret; | |
975 | ||
520ebf72 AK |
976 | /* fixup linkages */ |
977 | zebra_if_update_all_links(); | |
d2bec88a SW |
978 | return 0; |
979 | } | |
980 | ||
981 | /** | |
982 | * interface_addr_lookup_netlink() - Look up interface addresses | |
983 | * | |
984 | * @zns: Zebra netlink socket | |
985 | * Return: Result status | |
986 | */ | |
987 | static int interface_addr_lookup_netlink(struct zebra_ns *zns) | |
988 | { | |
989 | int ret; | |
990 | struct zebra_dplane_info dp_info; | |
991 | struct nlsock *netlink_cmd = &zns->netlink_cmd; | |
992 | ||
993 | /* Capture key info from ns struct */ | |
994 | zebra_dplane_info_from_zns(&dp_info, zns, true /*is_cmd*/); | |
520ebf72 | 995 | |
d62a17ae | 996 | /* Get IPv4 address of the interfaces. */ |
85a75f1e | 997 | ret = netlink_request_intf_addr(netlink_cmd, AF_INET, RTM_GETADDR, 0); |
d62a17ae | 998 | if (ret < 0) |
999 | return ret; | |
85a75f1e | 1000 | ret = netlink_parse_info(netlink_interface_addr, netlink_cmd, &dp_info, |
d62a17ae | 1001 | 0, 1); |
1002 | if (ret < 0) | |
1003 | return ret; | |
1004 | ||
1005 | /* Get IPv6 address of the interfaces. */ | |
85a75f1e | 1006 | ret = netlink_request_intf_addr(netlink_cmd, AF_INET6, RTM_GETADDR, 0); |
d62a17ae | 1007 | if (ret < 0) |
1008 | return ret; | |
85a75f1e | 1009 | ret = netlink_parse_info(netlink_interface_addr, netlink_cmd, &dp_info, |
d62a17ae | 1010 | 0, 1); |
1011 | if (ret < 0) | |
1012 | return ret; | |
1013 | ||
1014 | return 0; | |
1fdc9eae | 1015 | } |
1016 | ||
e0ae31b8 DS |
1017 | int kernel_interface_set_master(struct interface *master, |
1018 | struct interface *slave) | |
1019 | { | |
1020 | struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT); | |
1021 | ||
1022 | struct { | |
1023 | struct nlmsghdr n; | |
1024 | struct ifinfomsg ifa; | |
1025 | char buf[NL_PKT_BUF_SIZE]; | |
1026 | } req; | |
1027 | ||
0d6f7fd6 | 1028 | memset(&req, 0, sizeof(req)); |
e0ae31b8 DS |
1029 | |
1030 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
1031 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
1032 | req.n.nlmsg_type = RTM_SETLINK; | |
1033 | req.n.nlmsg_pid = zns->netlink_cmd.snl.nl_pid; | |
1034 | ||
1035 | req.ifa.ifi_index = slave->ifindex; | |
1036 | ||
a757997c JU |
1037 | nl_attr_put32(&req.n, sizeof(req), IFLA_MASTER, master->ifindex); |
1038 | nl_attr_put32(&req.n, sizeof(req), IFLA_LINK, slave->ifindex); | |
e0ae31b8 DS |
1039 | |
1040 | return netlink_talk(netlink_talk_filter, &req.n, &zns->netlink_cmd, zns, | |
1041 | 0); | |
1042 | } | |
1043 | ||
1fdc9eae | 1044 | /* Interface address modification. */ |
67e3369e JU |
1045 | static ssize_t netlink_address_msg_encoder(struct zebra_dplane_ctx *ctx, |
1046 | void *buf, size_t buflen) | |
1fdc9eae | 1047 | { |
d62a17ae | 1048 | int bytelen; |
64168803 MS |
1049 | const struct prefix *p; |
1050 | int cmd; | |
1051 | const char *label; | |
1fdc9eae | 1052 | |
d62a17ae | 1053 | struct { |
1054 | struct nlmsghdr n; | |
1055 | struct ifaddrmsg ifa; | |
67e3369e JU |
1056 | char buf[0]; |
1057 | } *req = buf; | |
1058 | ||
1059 | if (buflen < sizeof(*req)) | |
1060 | return 0; | |
1fdc9eae | 1061 | |
64168803 | 1062 | p = dplane_ctx_get_intf_addr(ctx); |
67e3369e | 1063 | memset(req, 0, sizeof(*req)); |
1fdc9eae | 1064 | |
64168803 | 1065 | bytelen = (p->family == AF_INET ? 4 : 16); |
1fdc9eae | 1066 | |
67e3369e JU |
1067 | req->n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)); |
1068 | req->n.nlmsg_flags = NLM_F_REQUEST; | |
a55ba23f | 1069 | |
64168803 MS |
1070 | if (dplane_ctx_get_op(ctx) == DPLANE_OP_ADDR_INSTALL) |
1071 | cmd = RTM_NEWADDR; | |
1072 | else | |
1073 | cmd = RTM_DELADDR; | |
1074 | ||
67e3369e JU |
1075 | req->n.nlmsg_type = cmd; |
1076 | req->ifa.ifa_family = p->family; | |
1fdc9eae | 1077 | |
67e3369e | 1078 | req->ifa.ifa_index = dplane_ctx_get_ifindex(ctx); |
1fdc9eae | 1079 | |
67e3369e JU |
1080 | if (!nl_attr_put(&req->n, buflen, IFA_LOCAL, &p->u.prefix, bytelen)) |
1081 | return 0; | |
1fdc9eae | 1082 | |
64168803 MS |
1083 | if (p->family == AF_INET) { |
1084 | if (dplane_ctx_intf_is_connected(ctx)) { | |
1085 | p = dplane_ctx_get_intf_dest(ctx); | |
67e3369e JU |
1086 | if (!nl_attr_put(&req->n, buflen, IFA_ADDRESS, |
1087 | &p->u.prefix, bytelen)) | |
1088 | return 0; | |
0f3af738 JW |
1089 | } else if (cmd == RTM_NEWADDR) { |
1090 | struct in_addr broad = { | |
1091 | .s_addr = ipv4_broadcast_addr(p->u.prefix4.s_addr, | |
1092 | p->prefixlen) | |
1093 | }; | |
67e3369e JU |
1094 | if (!nl_attr_put(&req->n, buflen, IFA_BROADCAST, &broad, |
1095 | bytelen)) | |
1096 | return 0; | |
d62a17ae | 1097 | } |
1098 | } | |
1fdc9eae | 1099 | |
64168803 | 1100 | /* p is now either address or destination/bcast addr */ |
67e3369e | 1101 | req->ifa.ifa_prefixlen = p->prefixlen; |
e8d19a05 | 1102 | |
64168803 | 1103 | if (dplane_ctx_intf_is_secondary(ctx)) |
67e3369e | 1104 | SET_FLAG(req->ifa.ifa_flags, IFA_F_SECONDARY); |
1fdc9eae | 1105 | |
64168803 MS |
1106 | if (dplane_ctx_intf_has_label(ctx)) { |
1107 | label = dplane_ctx_get_intf_label(ctx); | |
67e3369e JU |
1108 | if (!nl_attr_put(&req->n, buflen, IFA_LABEL, label, |
1109 | strlen(label) + 1)) | |
1110 | return 0; | |
64168803 | 1111 | } |
1fdc9eae | 1112 | |
67e3369e | 1113 | return NLMSG_ALIGN(req->n.nlmsg_len); |
e86b71f1 PG |
1114 | } |
1115 | ||
67e3369e JU |
1116 | enum netlink_msg_status |
1117 | netlink_put_address_update_msg(struct nl_batch *bth, | |
1118 | struct zebra_dplane_ctx *ctx) | |
1119 | { | |
1120 | return netlink_batch_add_msg(bth, ctx, netlink_address_msg_encoder, | |
1121 | false); | |
e86b71f1 PG |
1122 | } |
1123 | ||
2414abd3 | 1124 | int netlink_interface_addr(struct nlmsghdr *h, ns_id_t ns_id, int startup) |
1fdc9eae | 1125 | { |
d62a17ae | 1126 | int len; |
1127 | struct ifaddrmsg *ifa; | |
1128 | struct rtattr *tb[IFA_MAX + 1]; | |
1129 | struct interface *ifp; | |
1130 | void *addr; | |
1131 | void *broad; | |
d7c0a89a | 1132 | uint8_t flags = 0; |
d62a17ae | 1133 | char *label = NULL; |
1134 | struct zebra_ns *zns; | |
cde1af84 | 1135 | uint32_t metric = METRIC_MAX; |
9254efed | 1136 | uint32_t kernel_flags = 0; |
d62a17ae | 1137 | |
1138 | zns = zebra_ns_lookup(ns_id); | |
1139 | ifa = NLMSG_DATA(h); | |
1140 | ||
8a1b681c | 1141 | if (ifa->ifa_family != AF_INET && ifa->ifa_family != AF_INET6) { |
9df414fe | 1142 | flog_warn( |
e914ccbe | 1143 | EC_ZEBRA_UNKNOWN_FAMILY, |
87b5d1b0 DS |
1144 | "Invalid address family: %u received from kernel interface addr change: %s", |
1145 | ifa->ifa_family, nl_msg_type_to_str(h->nlmsg_type)); | |
d62a17ae | 1146 | return 0; |
8a1b681c | 1147 | } |
d62a17ae | 1148 | |
1149 | if (h->nlmsg_type != RTM_NEWADDR && h->nlmsg_type != RTM_DELADDR) | |
1150 | return 0; | |
1151 | ||
1152 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifaddrmsg)); | |
9bdf8618 | 1153 | if (len < 0) { |
15569c58 DA |
1154 | zlog_err( |
1155 | "%s: Message received from netlink is of a broken size: %d %zu", | |
1156 | __func__, h->nlmsg_len, | |
1157 | (size_t)NLMSG_LENGTH(sizeof(struct ifaddrmsg))); | |
d62a17ae | 1158 | return -1; |
9bdf8618 | 1159 | } |
d62a17ae | 1160 | |
0d6f7fd6 | 1161 | memset(tb, 0, sizeof(tb)); |
d62a17ae | 1162 | netlink_parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), len); |
1163 | ||
1164 | ifp = if_lookup_by_index_per_ns(zns, ifa->ifa_index); | |
1165 | if (ifp == NULL) { | |
af4c2728 | 1166 | flog_err( |
450971aa | 1167 | EC_LIB_INTERFACE, |
d62a17ae | 1168 | "netlink_interface_addr can't find interface by index %d", |
1169 | ifa->ifa_index); | |
1170 | return -1; | |
1171 | } | |
1172 | ||
9254efed DS |
1173 | /* Flags passed through */ |
1174 | if (tb[IFA_FLAGS]) | |
1175 | kernel_flags = *(int *)RTA_DATA(tb[IFA_FLAGS]); | |
1176 | else | |
1177 | kernel_flags = ifa->ifa_flags; | |
1178 | ||
d62a17ae | 1179 | if (IS_ZEBRA_DEBUG_KERNEL) /* remove this line to see initial ifcfg */ |
1180 | { | |
1181 | char buf[BUFSIZ]; | |
1182 | zlog_debug("netlink_interface_addr %s %s flags 0x%x:", | |
1183 | nl_msg_type_to_str(h->nlmsg_type), ifp->name, | |
9254efed | 1184 | kernel_flags); |
d62a17ae | 1185 | if (tb[IFA_LOCAL]) |
1186 | zlog_debug(" IFA_LOCAL %s/%d", | |
1187 | inet_ntop(ifa->ifa_family, | |
1188 | RTA_DATA(tb[IFA_LOCAL]), buf, | |
1189 | BUFSIZ), | |
1190 | ifa->ifa_prefixlen); | |
1191 | if (tb[IFA_ADDRESS]) | |
1192 | zlog_debug(" IFA_ADDRESS %s/%d", | |
1193 | inet_ntop(ifa->ifa_family, | |
1194 | RTA_DATA(tb[IFA_ADDRESS]), buf, | |
1195 | BUFSIZ), | |
1196 | ifa->ifa_prefixlen); | |
1197 | if (tb[IFA_BROADCAST]) | |
1198 | zlog_debug(" IFA_BROADCAST %s/%d", | |
1199 | inet_ntop(ifa->ifa_family, | |
1200 | RTA_DATA(tb[IFA_BROADCAST]), buf, | |
1201 | BUFSIZ), | |
1202 | ifa->ifa_prefixlen); | |
1203 | if (tb[IFA_LABEL] && strcmp(ifp->name, RTA_DATA(tb[IFA_LABEL]))) | |
1204 | zlog_debug(" IFA_LABEL %s", | |
1205 | (char *)RTA_DATA(tb[IFA_LABEL])); | |
1206 | ||
1207 | if (tb[IFA_CACHEINFO]) { | |
1208 | struct ifa_cacheinfo *ci = RTA_DATA(tb[IFA_CACHEINFO]); | |
1209 | zlog_debug(" IFA_CACHEINFO pref %d, valid %d", | |
1210 | ci->ifa_prefered, ci->ifa_valid); | |
1211 | } | |
1212 | } | |
1213 | ||
1214 | /* logic copied from iproute2/ip/ipaddress.c:print_addrinfo() */ | |
1215 | if (tb[IFA_LOCAL] == NULL) | |
1216 | tb[IFA_LOCAL] = tb[IFA_ADDRESS]; | |
1217 | if (tb[IFA_ADDRESS] == NULL) | |
1218 | tb[IFA_ADDRESS] = tb[IFA_LOCAL]; | |
1219 | ||
1220 | /* local interface address */ | |
1221 | addr = (tb[IFA_LOCAL] ? RTA_DATA(tb[IFA_LOCAL]) : NULL); | |
1222 | ||
1223 | /* is there a peer address? */ | |
1224 | if (tb[IFA_ADDRESS] | |
1225 | && memcmp(RTA_DATA(tb[IFA_ADDRESS]), RTA_DATA(tb[IFA_LOCAL]), | |
1226 | RTA_PAYLOAD(tb[IFA_ADDRESS]))) { | |
1227 | broad = RTA_DATA(tb[IFA_ADDRESS]); | |
1228 | SET_FLAG(flags, ZEBRA_IFA_PEER); | |
1229 | } else | |
1230 | /* seeking a broadcast address */ | |
1231 | broad = (tb[IFA_BROADCAST] ? RTA_DATA(tb[IFA_BROADCAST]) | |
1232 | : NULL); | |
1233 | ||
1234 | /* addr is primary key, SOL if we don't have one */ | |
1235 | if (addr == NULL) { | |
14a4d9d0 | 1236 | zlog_debug("%s: Local Interface Address is NULL for %s", |
1237 | __func__, ifp->name); | |
d62a17ae | 1238 | return -1; |
1239 | } | |
1240 | ||
1241 | /* Flags. */ | |
9254efed | 1242 | if (kernel_flags & IFA_F_SECONDARY) |
d62a17ae | 1243 | SET_FLAG(flags, ZEBRA_IFA_SECONDARY); |
1244 | ||
1245 | /* Label */ | |
1246 | if (tb[IFA_LABEL]) | |
1247 | label = (char *)RTA_DATA(tb[IFA_LABEL]); | |
1248 | ||
2e1cc436 | 1249 | if (label && strcmp(ifp->name, label) == 0) |
d62a17ae | 1250 | label = NULL; |
1251 | ||
cde1af84 AK |
1252 | if (tb[IFA_RT_PRIORITY]) |
1253 | metric = *(uint32_t *)RTA_DATA(tb[IFA_RT_PRIORITY]); | |
1254 | ||
d62a17ae | 1255 | /* Register interface address to the interface. */ |
1256 | if (ifa->ifa_family == AF_INET) { | |
930571d2 | 1257 | if (ifa->ifa_prefixlen > IPV4_MAX_BITLEN) { |
e17d9b2d | 1258 | zlog_err( |
87b5d1b0 DS |
1259 | "Invalid prefix length: %u received from kernel interface addr change: %s", |
1260 | ifa->ifa_prefixlen, | |
1261 | nl_msg_type_to_str(h->nlmsg_type)); | |
e17d9b2d | 1262 | return -1; |
930571d2 | 1263 | } |
20e879f9 | 1264 | |
d62a17ae | 1265 | if (h->nlmsg_type == RTM_NEWADDR) |
1266 | connected_add_ipv4(ifp, flags, (struct in_addr *)addr, | |
1267 | ifa->ifa_prefixlen, | |
cde1af84 AK |
1268 | (struct in_addr *)broad, label, |
1269 | metric); | |
20e879f9 MS |
1270 | else if (CHECK_FLAG(flags, ZEBRA_IFA_PEER)) { |
1271 | /* Delete with a peer address */ | |
1272 | connected_delete_ipv4( | |
1273 | ifp, flags, (struct in_addr *)addr, | |
1274 | ifa->ifa_prefixlen, broad); | |
1275 | } else | |
d62a17ae | 1276 | connected_delete_ipv4( |
1277 | ifp, flags, (struct in_addr *)addr, | |
fd267f08 | 1278 | ifa->ifa_prefixlen, NULL); |
d62a17ae | 1279 | } |
20e879f9 | 1280 | |
d62a17ae | 1281 | if (ifa->ifa_family == AF_INET6) { |
930571d2 | 1282 | if (ifa->ifa_prefixlen > IPV6_MAX_BITLEN) { |
e17d9b2d | 1283 | zlog_err( |
87b5d1b0 DS |
1284 | "Invalid prefix length: %u received from kernel interface addr change: %s", |
1285 | ifa->ifa_prefixlen, | |
1286 | nl_msg_type_to_str(h->nlmsg_type)); | |
e17d9b2d | 1287 | return -1; |
930571d2 | 1288 | } |
d62a17ae | 1289 | if (h->nlmsg_type == RTM_NEWADDR) { |
1290 | /* Only consider valid addresses; we'll not get a | |
1291 | * notification from | |
1292 | * the kernel till IPv6 DAD has completed, but at init | |
1293 | * time, Quagga | |
1294 | * does query for and will receive all addresses. | |
1295 | */ | |
9254efed | 1296 | if (!(kernel_flags |
d62a17ae | 1297 | & (IFA_F_DADFAILED | IFA_F_TENTATIVE))) |
60466a63 QY |
1298 | connected_add_ipv6(ifp, flags, |
1299 | (struct in6_addr *)addr, | |
60c0687a | 1300 | (struct in6_addr *)broad, |
cde1af84 AK |
1301 | ifa->ifa_prefixlen, label, |
1302 | metric); | |
d62a17ae | 1303 | } else |
1304 | connected_delete_ipv6(ifp, (struct in6_addr *)addr, | |
fd267f08 | 1305 | NULL, ifa->ifa_prefixlen); |
d62a17ae | 1306 | } |
1307 | ||
2a181147 SW |
1308 | |
1309 | /* | |
1310 | * Linux kernel does not send route delete on interface down/addr del | |
1311 | * so we have to re-process routes it owns (i.e. kernel routes) | |
1312 | */ | |
1313 | if (h->nlmsg_type != RTM_NEWADDR) | |
1314 | rib_update(RIB_UPDATE_KERNEL); | |
1315 | ||
d62a17ae | 1316 | return 0; |
1fdc9eae | 1317 | } |
1318 | ||
2414abd3 | 1319 | int netlink_link_change(struct nlmsghdr *h, ns_id_t ns_id, int startup) |
1fdc9eae | 1320 | { |
d62a17ae | 1321 | int len; |
1322 | struct ifinfomsg *ifi; | |
1323 | struct rtattr *tb[IFLA_MAX + 1]; | |
1324 | struct rtattr *linkinfo[IFLA_MAX + 1]; | |
1325 | struct interface *ifp; | |
1326 | char *name = NULL; | |
1327 | char *kind = NULL; | |
48884c6b | 1328 | char *desc = NULL; |
d62a17ae | 1329 | char *slave_kind = NULL; |
1330 | struct zebra_ns *zns; | |
1331 | vrf_id_t vrf_id = VRF_DEFAULT; | |
1332 | zebra_iftype_t zif_type = ZEBRA_IF_OTHER; | |
1333 | zebra_slave_iftype_t zif_slave_type = ZEBRA_IF_SLAVE_NONE; | |
1334 | ifindex_t bridge_ifindex = IFINDEX_INTERNAL; | |
b9368db9 | 1335 | ifindex_t bond_ifindex = IFINDEX_INTERNAL; |
d62a17ae | 1336 | ifindex_t link_ifindex = IFINDEX_INTERNAL; |
97c4e1d0 | 1337 | uint8_t old_hw_addr[INTERFACE_HWADDR_MAX]; |
ba5165ec | 1338 | struct zebra_if *zif; |
14ddb3d9 | 1339 | ns_id_t link_nsid = ns_id; |
c36e442c | 1340 | ifindex_t master_infindex = IFINDEX_INTERNAL; |
00a7710c | 1341 | uint8_t bypass = 0; |
d62a17ae | 1342 | |
1343 | zns = zebra_ns_lookup(ns_id); | |
1344 | ifi = NLMSG_DATA(h); | |
1345 | ||
fe533c56 | 1346 | /* assume if not default zns, then new VRF */ |
d62a17ae | 1347 | if (!(h->nlmsg_type == RTM_NEWLINK || h->nlmsg_type == RTM_DELLINK)) { |
1348 | /* If this is not link add/delete message so print warning. */ | |
87b5d1b0 DS |
1349 | zlog_debug("netlink_link_change: wrong kernel message %s", |
1350 | nl_msg_type_to_str(h->nlmsg_type)); | |
d62a17ae | 1351 | return 0; |
1352 | } | |
1353 | ||
8a1b681c SW |
1354 | if (!(ifi->ifi_family == AF_UNSPEC || ifi->ifi_family == AF_BRIDGE |
1355 | || ifi->ifi_family == AF_INET6)) { | |
9df414fe | 1356 | flog_warn( |
e914ccbe | 1357 | EC_ZEBRA_UNKNOWN_FAMILY, |
87b5d1b0 DS |
1358 | "Invalid address family: %u received from kernel link change: %s", |
1359 | ifi->ifi_family, nl_msg_type_to_str(h->nlmsg_type)); | |
8a1b681c SW |
1360 | return 0; |
1361 | } | |
1362 | ||
d62a17ae | 1363 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
9bdf8618 | 1364 | if (len < 0) { |
15569c58 DA |
1365 | zlog_err( |
1366 | "%s: Message received from netlink is of a broken size %d %zu", | |
1367 | __func__, h->nlmsg_len, | |
1368 | (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg))); | |
d62a17ae | 1369 | return -1; |
9bdf8618 | 1370 | } |
d62a17ae | 1371 | |
1372 | /* We are interested in some AF_BRIDGE notifications. */ | |
1373 | if (ifi->ifi_family == AF_BRIDGE) | |
1374 | return netlink_bridge_interface(h, len, ns_id, startup); | |
1375 | ||
1376 | /* Looking up interface name. */ | |
0d6f7fd6 DA |
1377 | memset(tb, 0, sizeof(tb)); |
1378 | memset(linkinfo, 0, sizeof(linkinfo)); | |
d62a17ae | 1379 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
1fdc9eae | 1380 | |
d62a17ae | 1381 | /* check for wireless messages to ignore */ |
1382 | if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0)) { | |
1383 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1384 | zlog_debug("%s: ignoring IFLA_WIRELESS message", | |
1385 | __func__); | |
1386 | return 0; | |
1387 | } | |
1fdc9eae | 1388 | |
d62a17ae | 1389 | if (tb[IFLA_IFNAME] == NULL) |
1390 | return -1; | |
1391 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
1fdc9eae | 1392 | |
d62a17ae | 1393 | if (tb[IFLA_LINKINFO]) { |
1394 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]); | |
1fdc9eae | 1395 | |
d62a17ae | 1396 | if (linkinfo[IFLA_INFO_KIND]) |
1397 | kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]); | |
1fdc9eae | 1398 | |
d62a17ae | 1399 | if (linkinfo[IFLA_INFO_SLAVE_KIND]) |
1400 | slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]); | |
1fdc9eae | 1401 | |
d62a17ae | 1402 | netlink_determine_zebra_iftype(kind, &zif_type); |
1403 | } | |
6675513d | 1404 | |
d62a17ae | 1405 | /* If linking to another interface, note it. */ |
1406 | if (tb[IFLA_LINK]) | |
1407 | link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]); | |
1fdc9eae | 1408 | |
b1cc23b2 | 1409 | if (tb[IFLA_LINK_NETNSID]) { |
14ddb3d9 | 1410 | link_nsid = *(ns_id_t *)RTA_DATA(tb[IFLA_LINK_NETNSID]); |
b1cc23b2 PG |
1411 | link_nsid = ns_id_get_absolute(ns_id, link_nsid); |
1412 | } | |
48884c6b DS |
1413 | if (tb[IFLA_IFALIAS]) { |
1414 | desc = (char *)RTA_DATA(tb[IFLA_IFALIAS]); | |
1415 | } | |
1416 | ||
d62a17ae | 1417 | /* If VRF, create or update the VRF structure itself. */ |
78dd30b2 | 1418 | if (zif_type == ZEBRA_IF_VRF && !vrf_is_backend_netns()) { |
5e031198 | 1419 | netlink_vrf_change(h, tb[IFLA_LINKINFO], ns_id, name); |
d62a17ae | 1420 | vrf_id = (vrf_id_t)ifi->ifi_index; |
1421 | } | |
1fdc9eae | 1422 | |
d62a17ae | 1423 | /* See if interface is present. */ |
1424 | ifp = if_lookup_by_name_per_ns(zns, name); | |
1425 | ||
1426 | if (h->nlmsg_type == RTM_NEWLINK) { | |
1427 | if (tb[IFLA_MASTER]) { | |
78dd30b2 PG |
1428 | if (slave_kind && (strcmp(slave_kind, "vrf") == 0) |
1429 | && !vrf_is_backend_netns()) { | |
d62a17ae | 1430 | zif_slave_type = ZEBRA_IF_SLAVE_VRF; |
c36e442c AK |
1431 | master_infindex = vrf_id = |
1432 | *(uint32_t *)RTA_DATA(tb[IFLA_MASTER]); | |
d62a17ae | 1433 | } else if (slave_kind |
1434 | && (strcmp(slave_kind, "bridge") == 0)) { | |
1435 | zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE; | |
c36e442c | 1436 | master_infindex = bridge_ifindex = |
d62a17ae | 1437 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); |
b9368db9 DD |
1438 | } else if (slave_kind |
1439 | && (strcmp(slave_kind, "bond") == 0)) { | |
1440 | zif_slave_type = ZEBRA_IF_SLAVE_BOND; | |
c36e442c | 1441 | master_infindex = bond_ifindex = |
b9368db9 | 1442 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); |
00a7710c | 1443 | bypass = netlink_parse_lacp_bypass(linkinfo); |
d62a17ae | 1444 | } else |
1445 | zif_slave_type = ZEBRA_IF_SLAVE_OTHER; | |
1446 | } | |
fe533c56 PG |
1447 | if (vrf_is_backend_netns()) |
1448 | vrf_id = (vrf_id_t)ns_id; | |
d62a17ae | 1449 | if (ifp == NULL |
1450 | || !CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE)) { | |
1451 | /* Add interface notification from kernel */ | |
1452 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1453 | zlog_debug( | |
3efd0893 | 1454 | "RTM_NEWLINK ADD for %s(%u) vrf_id %u type %d sl_type %d master %u flags 0x%x", |
d62a17ae | 1455 | name, ifi->ifi_index, vrf_id, zif_type, |
c36e442c | 1456 | zif_slave_type, master_infindex, |
d62a17ae | 1457 | ifi->ifi_flags); |
1458 | ||
1459 | if (ifp == NULL) { | |
1460 | /* unknown interface */ | |
a36898e7 | 1461 | ifp = if_get_by_name(name, vrf_id); |
d62a17ae | 1462 | } else { |
1463 | /* pre-configured interface, learnt now */ | |
a36898e7 DS |
1464 | if (ifp->vrf_id != vrf_id) |
1465 | if_update_to_new_vrf(ifp, vrf_id); | |
d62a17ae | 1466 | } |
1467 | ||
1468 | /* Update interface information. */ | |
1469 | set_ifindex(ifp, ifi->ifi_index, zns); | |
1470 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
d23b983b | 1471 | if (!tb[IFLA_MTU]) { |
9df414fe | 1472 | zlog_debug( |
d23b983b SW |
1473 | "RTM_NEWLINK for interface %s(%u) without MTU set", |
1474 | name, ifi->ifi_index); | |
1475 | return 0; | |
1476 | } | |
d62a17ae | 1477 | ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]); |
1478 | ifp->metric = 0; | |
1479 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; | |
1480 | ||
1481 | /* Set interface type */ | |
1482 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); | |
b0fa6f6a CS |
1483 | if (IS_ZEBRA_IF_VRF(ifp)) |
1484 | SET_FLAG(ifp->status, | |
1485 | ZEBRA_INTERFACE_VRF_LOOPBACK); | |
d62a17ae | 1486 | |
1487 | /* Update link. */ | |
680c278f | 1488 | zebra_if_update_link(ifp, link_ifindex, ns_id); |
d62a17ae | 1489 | |
1490 | netlink_interface_update_hw_addr(tb, ifp); | |
1491 | ||
1492 | /* Inform clients, install any configured addresses. */ | |
1493 | if_add_update(ifp); | |
1494 | ||
1495 | /* Extract and save L2 interface information, take | |
1496 | * additional actions. */ | |
1497 | netlink_interface_update_l2info( | |
14ddb3d9 PG |
1498 | ifp, linkinfo[IFLA_INFO_DATA], |
1499 | 1, link_nsid); | |
d62a17ae | 1500 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp)) |
1501 | zebra_l2if_update_bridge_slave(ifp, | |
a6e0edf2 PG |
1502 | bridge_ifindex, |
1503 | ns_id); | |
b9368db9 | 1504 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp)) |
00a7710c AK |
1505 | zebra_l2if_update_bond_slave(ifp, bond_ifindex, |
1506 | !!bypass); | |
c36e442c AK |
1507 | |
1508 | if (tb[IFLA_PROTO_DOWN]) { | |
1509 | uint8_t protodown; | |
1510 | ||
1511 | protodown = *(uint8_t *)RTA_DATA( | |
1512 | tb[IFLA_PROTO_DOWN]); | |
1513 | netlink_proc_dplane_if_protodown(ifp->info, | |
1514 | !!protodown); | |
1515 | } | |
a36898e7 | 1516 | } else if (ifp->vrf_id != vrf_id) { |
d62a17ae | 1517 | /* VRF change for an interface. */ |
1518 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1519 | zlog_debug( | |
3efd0893 | 1520 | "RTM_NEWLINK vrf-change for %s(%u) vrf_id %u -> %u flags 0x%x", |
a36898e7 DS |
1521 | name, ifp->ifindex, ifp->vrf_id, vrf_id, |
1522 | ifi->ifi_flags); | |
d62a17ae | 1523 | |
a36898e7 | 1524 | if_handle_vrf_change(ifp, vrf_id); |
d62a17ae | 1525 | } else { |
b9368db9 | 1526 | bool was_bridge_slave, was_bond_slave; |
d62a17ae | 1527 | |
1528 | /* Interface update. */ | |
1529 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1530 | zlog_debug( | |
3efd0893 | 1531 | "RTM_NEWLINK update for %s(%u) sl_type %d master %u flags 0x%x", |
d62a17ae | 1532 | name, ifp->ifindex, zif_slave_type, |
c36e442c | 1533 | master_infindex, ifi->ifi_flags); |
d62a17ae | 1534 | |
1535 | set_ifindex(ifp, ifi->ifi_index, zns); | |
d23b983b | 1536 | if (!tb[IFLA_MTU]) { |
9df414fe | 1537 | zlog_debug( |
d23b983b SW |
1538 | "RTM_NEWLINK for interface %s(%u) without MTU set", |
1539 | name, ifi->ifi_index); | |
1540 | return 0; | |
1541 | } | |
d62a17ae | 1542 | ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]); |
1543 | ifp->metric = 0; | |
1544 | ||
1545 | /* Update interface type - NOTE: Only slave_type can | |
1546 | * change. */ | |
1547 | was_bridge_slave = IS_ZEBRA_IF_BRIDGE_SLAVE(ifp); | |
b9368db9 | 1548 | was_bond_slave = IS_ZEBRA_IF_BOND_SLAVE(ifp); |
d62a17ae | 1549 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); |
1550 | ||
97c4e1d0 CS |
1551 | memcpy(old_hw_addr, ifp->hw_addr, INTERFACE_HWADDR_MAX); |
1552 | ||
d62a17ae | 1553 | netlink_interface_update_hw_addr(tb, ifp); |
1554 | ||
1555 | if (if_is_no_ptm_operative(ifp)) { | |
1556 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
1557 | if (!if_is_no_ptm_operative(ifp)) { | |
1558 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1559 | zlog_debug( | |
1560 | "Intf %s(%u) has gone DOWN", | |
1561 | name, ifp->ifindex); | |
1562 | if_down(ifp); | |
2a181147 | 1563 | rib_update(RIB_UPDATE_KERNEL); |
d62a17ae | 1564 | } else if (if_is_operative(ifp)) { |
1565 | /* Must notify client daemons of new | |
1566 | * interface status. */ | |
1567 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1568 | zlog_debug( | |
1569 | "Intf %s(%u) PTM up, notifying clients", | |
1570 | name, ifp->ifindex); | |
1571 | zebra_interface_up_update(ifp); | |
97c4e1d0 CS |
1572 | |
1573 | /* Update EVPN VNI when SVI MAC change | |
1574 | */ | |
1575 | if (IS_ZEBRA_IF_VLAN(ifp) && | |
1576 | memcmp(old_hw_addr, ifp->hw_addr, | |
1577 | INTERFACE_HWADDR_MAX)) { | |
1578 | struct interface *link_if; | |
1579 | ||
1580 | link_if = | |
1581 | if_lookup_by_index_per_ns( | |
1582 | zebra_ns_lookup(NS_DEFAULT), | |
1583 | link_ifindex); | |
1584 | if (link_if) | |
1585 | zebra_vxlan_svi_up(ifp, | |
1586 | link_if); | |
1587 | } | |
d62a17ae | 1588 | } |
1589 | } else { | |
1590 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
1591 | if (if_is_operative(ifp)) { | |
1592 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1593 | zlog_debug( | |
1594 | "Intf %s(%u) has come UP", | |
1595 | name, ifp->ifindex); | |
1596 | if_up(ifp); | |
6f908ded QY |
1597 | } else { |
1598 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1599 | zlog_debug( | |
7913714e | 1600 | "Intf %s(%u) has gone DOWN", |
6f908ded QY |
1601 | name, ifp->ifindex); |
1602 | if_down(ifp); | |
2a181147 | 1603 | rib_update(RIB_UPDATE_KERNEL); |
d62a17ae | 1604 | } |
1605 | } | |
1606 | ||
1607 | /* Extract and save L2 interface information, take | |
1608 | * additional actions. */ | |
1609 | netlink_interface_update_l2info( | |
14ddb3d9 PG |
1610 | ifp, linkinfo[IFLA_INFO_DATA], |
1611 | 0, link_nsid); | |
c36e442c AK |
1612 | if (IS_ZEBRA_IF_BOND(ifp)) |
1613 | zebra_l2if_update_bond(ifp, true); | |
d62a17ae | 1614 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp) || was_bridge_slave) |
1615 | zebra_l2if_update_bridge_slave(ifp, | |
a6e0edf2 PG |
1616 | bridge_ifindex, |
1617 | ns_id); | |
b9368db9 | 1618 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp) || was_bond_slave) |
00a7710c AK |
1619 | zebra_l2if_update_bond_slave(ifp, bond_ifindex, |
1620 | !!bypass); | |
c36e442c AK |
1621 | |
1622 | if (tb[IFLA_PROTO_DOWN]) { | |
1623 | uint8_t protodown; | |
1624 | ||
1625 | protodown = *(uint8_t *)RTA_DATA( | |
1626 | tb[IFLA_PROTO_DOWN]); | |
1627 | netlink_proc_dplane_if_protodown(ifp->info, | |
1628 | !!protodown); | |
1629 | } | |
d62a17ae | 1630 | } |
26f13577 DS |
1631 | |
1632 | zif = ifp->info; | |
1633 | if (zif) { | |
1634 | XFREE(MTYPE_TMP, zif->desc); | |
1635 | if (desc) | |
1636 | zif->desc = XSTRDUP(MTYPE_TMP, desc); | |
1637 | } | |
d62a17ae | 1638 | } else { |
1639 | /* Delete interface notification from kernel */ | |
1640 | if (ifp == NULL) { | |
9df414fe QY |
1641 | if (IS_ZEBRA_DEBUG_KERNEL) |
1642 | zlog_debug( | |
1643 | "RTM_DELLINK for unknown interface %s(%u)", | |
1644 | name, ifi->ifi_index); | |
d62a17ae | 1645 | return 0; |
1646 | } | |
1647 | ||
1648 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1649 | zlog_debug("RTM_DELLINK for %s(%u)", name, | |
1650 | ifp->ifindex); | |
1651 | ||
1652 | UNSET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK); | |
1653 | ||
c36e442c AK |
1654 | if (IS_ZEBRA_IF_BOND(ifp)) |
1655 | zebra_l2if_update_bond(ifp, false); | |
00a7710c AK |
1656 | if (IS_ZEBRA_IF_BOND_SLAVE(ifp)) |
1657 | zebra_l2if_update_bond_slave(ifp, bond_ifindex, false); | |
d62a17ae | 1658 | /* Special handling for bridge or VxLAN interfaces. */ |
1659 | if (IS_ZEBRA_IF_BRIDGE(ifp)) | |
1660 | zebra_l2_bridge_del(ifp); | |
1661 | else if (IS_ZEBRA_IF_VXLAN(ifp)) | |
1662 | zebra_l2_vxlanif_del(ifp); | |
1663 | ||
af736200 | 1664 | if_delete_update(ifp); |
1fdc9eae | 1665 | } |
1666 | ||
d62a17ae | 1667 | return 0; |
1fdc9eae | 1668 | } |
718e3744 | 1669 | |
c3bd894e QY |
1670 | int netlink_protodown(struct interface *ifp, bool down) |
1671 | { | |
1672 | struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT); | |
1673 | ||
1674 | struct { | |
1675 | struct nlmsghdr n; | |
1676 | struct ifinfomsg ifa; | |
1677 | char buf[NL_PKT_BUF_SIZE]; | |
1678 | } req; | |
1679 | ||
2fff50ec | 1680 | memset(&req, 0, sizeof(req)); |
c3bd894e QY |
1681 | |
1682 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
1683 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
1684 | req.n.nlmsg_type = RTM_SETLINK; | |
1685 | req.n.nlmsg_pid = zns->netlink_cmd.snl.nl_pid; | |
1686 | ||
1687 | req.ifa.ifi_index = ifp->ifindex; | |
1688 | ||
312a6bee | 1689 | nl_attr_put(&req.n, sizeof(req), IFLA_PROTO_DOWN, &down, sizeof(down)); |
a757997c | 1690 | nl_attr_put32(&req.n, sizeof(req), IFLA_LINK, ifp->ifindex); |
c3bd894e QY |
1691 | |
1692 | return netlink_talk(netlink_talk_filter, &req.n, &zns->netlink_cmd, zns, | |
1693 | 0); | |
1694 | } | |
1695 | ||
718e3744 | 1696 | /* Interface information read by netlink. */ |
d62a17ae | 1697 | void interface_list(struct zebra_ns *zns) |
718e3744 | 1698 | { |
d62a17ae | 1699 | interface_lookup_netlink(zns); |
d9f5b2f5 SW |
1700 | /* We add routes for interface address, |
1701 | * so we need to get the nexthop info | |
1702 | * from the kernel before we can do that | |
1703 | */ | |
81505946 | 1704 | netlink_nexthop_read(zns); |
cc4e0650 | 1705 | |
d2bec88a | 1706 | interface_addr_lookup_netlink(zns); |
718e3744 | 1707 | } |
ddfeb486 DL |
1708 | |
1709 | #endif /* GNU_LINUX */ |