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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" |
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 | ||
b9368db9 DD |
248 | static void netlink_determine_zebra_iftype(const char *kind, |
249 | zebra_iftype_t *zif_type) | |
6675513d | 250 | { |
d62a17ae | 251 | *zif_type = ZEBRA_IF_OTHER; |
252 | ||
253 | if (!kind) | |
254 | return; | |
255 | ||
256 | if (strcmp(kind, "vrf") == 0) | |
257 | *zif_type = ZEBRA_IF_VRF; | |
258 | else if (strcmp(kind, "bridge") == 0) | |
259 | *zif_type = ZEBRA_IF_BRIDGE; | |
260 | else if (strcmp(kind, "vlan") == 0) | |
261 | *zif_type = ZEBRA_IF_VLAN; | |
262 | else if (strcmp(kind, "vxlan") == 0) | |
263 | *zif_type = ZEBRA_IF_VXLAN; | |
1a98c087 MK |
264 | else if (strcmp(kind, "macvlan") == 0) |
265 | *zif_type = ZEBRA_IF_MACVLAN; | |
0e4864ea PG |
266 | else if (strcmp(kind, "veth") == 0) |
267 | *zif_type = ZEBRA_IF_VETH; | |
b9368db9 DD |
268 | else if (strcmp(kind, "bond") == 0) |
269 | *zif_type = ZEBRA_IF_BOND; | |
270 | else if (strcmp(kind, "bond_slave") == 0) | |
271 | *zif_type = ZEBRA_IF_BOND_SLAVE; | |
6675513d | 272 | } |
52d8f0d8 | 273 | |
d62a17ae | 274 | #define parse_rtattr_nested(tb, max, rta) \ |
275 | netlink_parse_rtattr((tb), (max), RTA_DATA(rta), RTA_PAYLOAD(rta)) | |
1fdc9eae | 276 | |
d62a17ae | 277 | static void netlink_vrf_change(struct nlmsghdr *h, struct rtattr *tb, |
278 | const char *name) | |
1fdc9eae | 279 | { |
d62a17ae | 280 | struct ifinfomsg *ifi; |
281 | struct rtattr *linkinfo[IFLA_INFO_MAX + 1]; | |
282 | struct rtattr *attr[IFLA_VRF_MAX + 1]; | |
283 | struct vrf *vrf; | |
284 | struct zebra_vrf *zvrf; | |
d7c0a89a | 285 | uint32_t nl_table_id; |
d62a17ae | 286 | |
287 | ifi = NLMSG_DATA(h); | |
288 | ||
0d6f7fd6 | 289 | memset(linkinfo, 0, sizeof(linkinfo)); |
d62a17ae | 290 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb); |
291 | ||
292 | if (!linkinfo[IFLA_INFO_DATA]) { | |
293 | if (IS_ZEBRA_DEBUG_KERNEL) | |
294 | zlog_debug( | |
295 | "%s: IFLA_INFO_DATA missing from VRF message: %s", | |
296 | __func__, name); | |
297 | return; | |
298 | } | |
299 | ||
0d6f7fd6 | 300 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 301 | parse_rtattr_nested(attr, IFLA_VRF_MAX, linkinfo[IFLA_INFO_DATA]); |
302 | if (!attr[IFLA_VRF_TABLE]) { | |
303 | if (IS_ZEBRA_DEBUG_KERNEL) | |
304 | zlog_debug( | |
305 | "%s: IFLA_VRF_TABLE missing from VRF message: %s", | |
306 | __func__, name); | |
307 | return; | |
1fdc9eae | 308 | } |
309 | ||
d7c0a89a | 310 | nl_table_id = *(uint32_t *)RTA_DATA(attr[IFLA_VRF_TABLE]); |
d62a17ae | 311 | |
312 | if (h->nlmsg_type == RTM_NEWLINK) { | |
313 | if (IS_ZEBRA_DEBUG_KERNEL) | |
314 | zlog_debug("RTM_NEWLINK for VRF %s(%u) table %u", name, | |
315 | ifi->ifi_index, nl_table_id); | |
316 | ||
317 | /* | |
318 | * vrf_get is implied creation if it does not exist | |
319 | */ | |
320 | vrf = vrf_get((vrf_id_t)ifi->ifi_index, | |
321 | name); // It would create vrf | |
322 | if (!vrf) { | |
450971aa | 323 | flog_err(EC_LIB_INTERFACE, "VRF %s id %u not created", |
1c50c1c0 | 324 | name, ifi->ifi_index); |
d62a17ae | 325 | return; |
326 | } | |
327 | ||
d62a17ae | 328 | /* |
329 | * This is the only place that we get the actual kernel table_id | |
330 | * being used. We need it to set the table_id of the routes | |
331 | * we are passing to the kernel.... And to throw some totally | |
332 | * awesome parties. that too. | |
593406a1 DS |
333 | * |
334 | * At this point we *must* have a zvrf because the vrf_create | |
335 | * callback creates one. We *must* set the table id | |
336 | * before the vrf_enable because of( at the very least ) | |
337 | * static routes being delayed for installation until | |
338 | * during the vrf_enable callbacks. | |
d62a17ae | 339 | */ |
340 | zvrf = (struct zebra_vrf *)vrf->info; | |
341 | zvrf->table_id = nl_table_id; | |
593406a1 DS |
342 | |
343 | /* Enable the created VRF. */ | |
344 | if (!vrf_enable(vrf)) { | |
450971aa | 345 | flog_err(EC_LIB_INTERFACE, |
1c50c1c0 QY |
346 | "Failed to enable VRF %s id %u", name, |
347 | ifi->ifi_index); | |
593406a1 DS |
348 | return; |
349 | } | |
350 | ||
d62a17ae | 351 | } else // h->nlmsg_type == RTM_DELLINK |
352 | { | |
353 | if (IS_ZEBRA_DEBUG_KERNEL) | |
354 | zlog_debug("RTM_DELLINK for VRF %s(%u)", name, | |
355 | ifi->ifi_index); | |
356 | ||
357 | vrf = vrf_lookup_by_id((vrf_id_t)ifi->ifi_index); | |
358 | ||
359 | if (!vrf) { | |
e914ccbe | 360 | flog_warn(EC_ZEBRA_VRF_NOT_FOUND, "%s: vrf not found", |
9df414fe | 361 | __func__); |
d62a17ae | 362 | return; |
363 | } | |
364 | ||
365 | vrf_delete(vrf); | |
366 | } | |
1fdc9eae | 367 | } |
368 | ||
67188ca2 | 369 | static uint32_t get_iflink_speed(struct interface *interface, int *error) |
535fe877 | 370 | { |
d62a17ae | 371 | struct ifreq ifdata; |
372 | struct ethtool_cmd ecmd; | |
373 | int sd; | |
374 | int rc; | |
0268f30e | 375 | const char *ifname = interface->name; |
d62a17ae | 376 | |
594c2878 JF |
377 | if (error) |
378 | *error = 0; | |
d62a17ae | 379 | /* initialize struct */ |
380 | memset(&ifdata, 0, sizeof(ifdata)); | |
381 | ||
382 | /* set interface name */ | |
0af35d90 | 383 | strlcpy(ifdata.ifr_name, ifname, sizeof(ifdata.ifr_name)); |
d62a17ae | 384 | |
385 | /* initialize ethtool interface */ | |
386 | memset(&ecmd, 0, sizeof(ecmd)); | |
387 | ecmd.cmd = ETHTOOL_GSET; /* ETHTOOL_GLINK */ | |
ba85366a | 388 | ifdata.ifr_data = (caddr_t)&ecmd; |
d62a17ae | 389 | |
390 | /* use ioctl to get IP address of an interface */ | |
0cf6db21 | 391 | frr_with_privs(&zserv_privs) { |
01b9e3fd | 392 | sd = vrf_socket(PF_INET, SOCK_DGRAM, IPPROTO_IP, |
a36898e7 | 393 | interface->vrf_id, |
01b9e3fd DL |
394 | NULL); |
395 | if (sd < 0) { | |
396 | if (IS_ZEBRA_DEBUG_KERNEL) | |
397 | zlog_debug("Failure to read interface %s speed: %d %s", | |
398 | ifname, errno, safe_strerror(errno)); | |
594c2878 JF |
399 | /* no vrf socket creation may probably mean vrf issue */ |
400 | if (error) | |
401 | *error = -1; | |
01b9e3fd DL |
402 | return 0; |
403 | } | |
d62a17ae | 404 | /* Get the current link state for the interface */ |
a36898e7 | 405 | rc = vrf_ioctl(interface->vrf_id, sd, SIOCETHTOOL, |
633fc9b1 | 406 | (char *)&ifdata); |
01b9e3fd | 407 | } |
d62a17ae | 408 | if (rc < 0) { |
f767cee4 | 409 | if (errno != EOPNOTSUPP && IS_ZEBRA_DEBUG_KERNEL) |
bd7d0299 DS |
410 | zlog_debug( |
411 | "IOCTL failure to read interface %s speed: %d %s", | |
412 | ifname, errno, safe_strerror(errno)); | |
594c2878 JF |
413 | /* no device means interface unreachable */ |
414 | if (errno == ENODEV && error) | |
415 | *error = -1; | |
d62a17ae | 416 | ecmd.speed_hi = 0; |
417 | ecmd.speed = 0; | |
418 | } | |
419 | ||
420 | close(sd); | |
421 | ||
67188ca2 | 422 | return ((uint32_t)ecmd.speed_hi << 16) | ecmd.speed; |
535fe877 DS |
423 | } |
424 | ||
594c2878 | 425 | uint32_t kernel_get_speed(struct interface *ifp, int *error) |
dc7b3cae | 426 | { |
594c2878 | 427 | return get_iflink_speed(ifp, error); |
dc7b3cae DS |
428 | } |
429 | ||
d62a17ae | 430 | static int netlink_extract_bridge_info(struct rtattr *link_data, |
431 | struct zebra_l2info_bridge *bridge_info) | |
6675513d | 432 | { |
d62a17ae | 433 | struct rtattr *attr[IFLA_BR_MAX + 1]; |
434 | ||
435 | memset(bridge_info, 0, sizeof(*bridge_info)); | |
0d6f7fd6 | 436 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 437 | parse_rtattr_nested(attr, IFLA_BR_MAX, link_data); |
438 | if (attr[IFLA_BR_VLAN_FILTERING]) | |
439 | bridge_info->vlan_aware = | |
d7c0a89a | 440 | *(uint8_t *)RTA_DATA(attr[IFLA_BR_VLAN_FILTERING]); |
d62a17ae | 441 | return 0; |
6675513d | 442 | } |
443 | ||
d62a17ae | 444 | static int netlink_extract_vlan_info(struct rtattr *link_data, |
445 | struct zebra_l2info_vlan *vlan_info) | |
6675513d | 446 | { |
d62a17ae | 447 | struct rtattr *attr[IFLA_VLAN_MAX + 1]; |
448 | vlanid_t vid_in_msg; | |
449 | ||
450 | memset(vlan_info, 0, sizeof(*vlan_info)); | |
0d6f7fd6 | 451 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 452 | parse_rtattr_nested(attr, IFLA_VLAN_MAX, link_data); |
453 | if (!attr[IFLA_VLAN_ID]) { | |
454 | if (IS_ZEBRA_DEBUG_KERNEL) | |
455 | zlog_debug("IFLA_VLAN_ID missing from VLAN IF message"); | |
456 | return -1; | |
457 | } | |
458 | ||
459 | vid_in_msg = *(vlanid_t *)RTA_DATA(attr[IFLA_VLAN_ID]); | |
460 | vlan_info->vid = vid_in_msg; | |
461 | return 0; | |
6675513d | 462 | } |
463 | ||
d62a17ae | 464 | static int netlink_extract_vxlan_info(struct rtattr *link_data, |
465 | struct zebra_l2info_vxlan *vxl_info) | |
6675513d | 466 | { |
d62a17ae | 467 | struct rtattr *attr[IFLA_VXLAN_MAX + 1]; |
468 | vni_t vni_in_msg; | |
469 | struct in_addr vtep_ip_in_msg; | |
470 | ||
471 | memset(vxl_info, 0, sizeof(*vxl_info)); | |
0d6f7fd6 | 472 | memset(attr, 0, sizeof(attr)); |
d62a17ae | 473 | parse_rtattr_nested(attr, IFLA_VXLAN_MAX, link_data); |
474 | if (!attr[IFLA_VXLAN_ID]) { | |
475 | if (IS_ZEBRA_DEBUG_KERNEL) | |
476 | zlog_debug( | |
477 | "IFLA_VXLAN_ID missing from VXLAN IF message"); | |
478 | return -1; | |
479 | } | |
480 | ||
481 | vni_in_msg = *(vni_t *)RTA_DATA(attr[IFLA_VXLAN_ID]); | |
482 | vxl_info->vni = vni_in_msg; | |
483 | if (!attr[IFLA_VXLAN_LOCAL]) { | |
484 | if (IS_ZEBRA_DEBUG_KERNEL) | |
485 | zlog_debug( | |
486 | "IFLA_VXLAN_LOCAL missing from VXLAN IF message"); | |
487 | } else { | |
488 | vtep_ip_in_msg = | |
489 | *(struct in_addr *)RTA_DATA(attr[IFLA_VXLAN_LOCAL]); | |
490 | vxl_info->vtep_ip = vtep_ip_in_msg; | |
491 | } | |
492 | ||
d7fe235c AK |
493 | if (attr[IFLA_VXLAN_GROUP]) { |
494 | vxl_info->mcast_grp = | |
495 | *(struct in_addr *)RTA_DATA(attr[IFLA_VXLAN_GROUP]); | |
496 | } | |
497 | ||
d62a17ae | 498 | return 0; |
6675513d | 499 | } |
500 | ||
501 | /* | |
502 | * Extract and save L2 params (of interest) for an interface. When a | |
503 | * bridge interface is added or updated, take further actions to map | |
504 | * its members. Likewise, for VxLAN interface. | |
505 | */ | |
d62a17ae | 506 | static void netlink_interface_update_l2info(struct interface *ifp, |
507 | struct rtattr *link_data, int add) | |
6675513d | 508 | { |
d62a17ae | 509 | if (!link_data) |
510 | return; | |
511 | ||
512 | if (IS_ZEBRA_IF_BRIDGE(ifp)) { | |
513 | struct zebra_l2info_bridge bridge_info; | |
514 | ||
515 | netlink_extract_bridge_info(link_data, &bridge_info); | |
516 | zebra_l2_bridge_add_update(ifp, &bridge_info, add); | |
517 | } else if (IS_ZEBRA_IF_VLAN(ifp)) { | |
518 | struct zebra_l2info_vlan vlan_info; | |
519 | ||
520 | netlink_extract_vlan_info(link_data, &vlan_info); | |
521 | zebra_l2_vlanif_update(ifp, &vlan_info); | |
522 | } else if (IS_ZEBRA_IF_VXLAN(ifp)) { | |
523 | struct zebra_l2info_vxlan vxlan_info; | |
524 | ||
525 | netlink_extract_vxlan_info(link_data, &vxlan_info); | |
526 | zebra_l2_vxlanif_add_update(ifp, &vxlan_info, add); | |
527 | } | |
6675513d | 528 | } |
529 | ||
d62a17ae | 530 | static int netlink_bridge_interface(struct nlmsghdr *h, int len, ns_id_t ns_id, |
531 | int startup) | |
6675513d | 532 | { |
d62a17ae | 533 | char *name = NULL; |
534 | struct ifinfomsg *ifi; | |
535 | struct rtattr *tb[IFLA_MAX + 1]; | |
536 | struct interface *ifp; | |
537 | struct rtattr *aftb[IFLA_BRIDGE_MAX + 1]; | |
538 | struct { | |
d7c0a89a QY |
539 | uint16_t flags; |
540 | uint16_t vid; | |
d62a17ae | 541 | } * vinfo; |
542 | vlanid_t access_vlan; | |
543 | ||
544 | /* Fetch name and ifindex */ | |
545 | ifi = NLMSG_DATA(h); | |
0d6f7fd6 | 546 | memset(tb, 0, sizeof(tb)); |
d62a17ae | 547 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
548 | ||
549 | if (tb[IFLA_IFNAME] == NULL) | |
550 | return -1; | |
551 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
552 | ||
553 | /* The interface should already be known, if not discard. */ | |
554 | ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(ns_id), ifi->ifi_index); | |
555 | if (!ifp) { | |
9df414fe QY |
556 | zlog_debug("Cannot find bridge IF %s(%u)", name, |
557 | ifi->ifi_index); | |
d62a17ae | 558 | return 0; |
559 | } | |
560 | if (!IS_ZEBRA_IF_VXLAN(ifp)) | |
561 | return 0; | |
562 | ||
563 | /* We are only interested in the access VLAN i.e., AF_SPEC */ | |
564 | if (!tb[IFLA_AF_SPEC]) | |
565 | return 0; | |
566 | ||
567 | /* There is a 1-to-1 mapping of VLAN to VxLAN - hence | |
568 | * only 1 access VLAN is accepted. | |
569 | */ | |
0d6f7fd6 | 570 | memset(aftb, 0, sizeof(aftb)); |
d62a17ae | 571 | parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, tb[IFLA_AF_SPEC]); |
572 | if (!aftb[IFLA_BRIDGE_VLAN_INFO]) | |
573 | return 0; | |
574 | ||
575 | vinfo = RTA_DATA(aftb[IFLA_BRIDGE_VLAN_INFO]); | |
576 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_PVID)) | |
577 | return 0; | |
578 | ||
579 | access_vlan = (vlanid_t)vinfo->vid; | |
580 | if (IS_ZEBRA_DEBUG_KERNEL) | |
581 | zlog_debug("Access VLAN %u for VxLAN IF %s(%u)", access_vlan, | |
582 | name, ifi->ifi_index); | |
583 | zebra_l2_vxlanif_update_access_vlan(ifp, access_vlan); | |
584 | return 0; | |
6675513d | 585 | } |
586 | ||
2414abd3 DS |
587 | /* |
588 | * Called from interface_lookup_netlink(). This function is only used | |
589 | * during bootstrap. | |
590 | */ | |
591 | static int netlink_interface(struct nlmsghdr *h, ns_id_t ns_id, int startup) | |
1fdc9eae | 592 | { |
d62a17ae | 593 | int len; |
594 | struct ifinfomsg *ifi; | |
595 | struct rtattr *tb[IFLA_MAX + 1]; | |
596 | struct rtattr *linkinfo[IFLA_MAX + 1]; | |
597 | struct interface *ifp; | |
598 | char *name = NULL; | |
599 | char *kind = NULL; | |
48884c6b | 600 | char *desc = NULL; |
d62a17ae | 601 | char *slave_kind = NULL; |
ea7ec261 | 602 | struct zebra_ns *zns = NULL; |
d62a17ae | 603 | vrf_id_t vrf_id = VRF_DEFAULT; |
604 | zebra_iftype_t zif_type = ZEBRA_IF_OTHER; | |
605 | zebra_slave_iftype_t zif_slave_type = ZEBRA_IF_SLAVE_NONE; | |
606 | ifindex_t bridge_ifindex = IFINDEX_INTERNAL; | |
607 | ifindex_t link_ifindex = IFINDEX_INTERNAL; | |
b9368db9 | 608 | ifindex_t bond_ifindex = IFINDEX_INTERNAL; |
520ebf72 | 609 | struct zebra_if *zif; |
d62a17ae | 610 | |
611 | zns = zebra_ns_lookup(ns_id); | |
612 | ifi = NLMSG_DATA(h); | |
613 | ||
614 | if (h->nlmsg_type != RTM_NEWLINK) | |
615 | return 0; | |
616 | ||
617 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
9bdf8618 | 618 | if (len < 0) { |
15569c58 DA |
619 | zlog_err( |
620 | "%s: Message received from netlink is of a broken size: %d %zu", | |
621 | __func__, h->nlmsg_len, | |
622 | (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg))); | |
d62a17ae | 623 | return -1; |
9bdf8618 | 624 | } |
d62a17ae | 625 | |
626 | /* We are interested in some AF_BRIDGE notifications. */ | |
627 | if (ifi->ifi_family == AF_BRIDGE) | |
628 | return netlink_bridge_interface(h, len, ns_id, startup); | |
629 | ||
630 | /* Looking up interface name. */ | |
0d6f7fd6 DA |
631 | memset(tb, 0, sizeof(tb)); |
632 | memset(linkinfo, 0, sizeof(linkinfo)); | |
d62a17ae | 633 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
1fdc9eae | 634 | |
d62a17ae | 635 | /* check for wireless messages to ignore */ |
636 | if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0)) { | |
637 | if (IS_ZEBRA_DEBUG_KERNEL) | |
638 | zlog_debug("%s: ignoring IFLA_WIRELESS message", | |
639 | __func__); | |
640 | return 0; | |
641 | } | |
1fdc9eae | 642 | |
d62a17ae | 643 | if (tb[IFLA_IFNAME] == NULL) |
644 | return -1; | |
645 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
1fdc9eae | 646 | |
48884c6b DS |
647 | if (tb[IFLA_IFALIAS]) |
648 | desc = (char *)RTA_DATA(tb[IFLA_IFALIAS]); | |
649 | ||
d62a17ae | 650 | if (tb[IFLA_LINKINFO]) { |
651 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]); | |
1fdc9eae | 652 | |
d62a17ae | 653 | if (linkinfo[IFLA_INFO_KIND]) |
654 | kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]); | |
1fdc9eae | 655 | |
d62a17ae | 656 | if (linkinfo[IFLA_INFO_SLAVE_KIND]) |
657 | slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]); | |
1fdc9eae | 658 | |
b9368db9 DD |
659 | if ((slave_kind != NULL) && strcmp(slave_kind, "bond") == 0) |
660 | netlink_determine_zebra_iftype("bond_slave", &zif_type); | |
661 | else | |
662 | netlink_determine_zebra_iftype(kind, &zif_type); | |
d62a17ae | 663 | } |
664 | ||
665 | /* If VRF, create the VRF structure itself. */ | |
78dd30b2 | 666 | if (zif_type == ZEBRA_IF_VRF && !vrf_is_backend_netns()) { |
d62a17ae | 667 | netlink_vrf_change(h, tb[IFLA_LINKINFO], name); |
668 | vrf_id = (vrf_id_t)ifi->ifi_index; | |
669 | } | |
670 | ||
671 | if (tb[IFLA_MASTER]) { | |
78dd30b2 PG |
672 | if (slave_kind && (strcmp(slave_kind, "vrf") == 0) |
673 | && !vrf_is_backend_netns()) { | |
d62a17ae | 674 | zif_slave_type = ZEBRA_IF_SLAVE_VRF; |
d7c0a89a | 675 | vrf_id = *(uint32_t *)RTA_DATA(tb[IFLA_MASTER]); |
d62a17ae | 676 | } else if (slave_kind && (strcmp(slave_kind, "bridge") == 0)) { |
677 | zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE; | |
678 | bridge_ifindex = | |
679 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
b9368db9 DD |
680 | } else if (slave_kind && (strcmp(slave_kind, "bond") == 0)) { |
681 | zif_slave_type = ZEBRA_IF_SLAVE_BOND; | |
682 | bond_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
d62a17ae | 683 | } else |
684 | zif_slave_type = ZEBRA_IF_SLAVE_OTHER; | |
685 | } | |
78dd30b2 PG |
686 | if (vrf_is_backend_netns()) |
687 | vrf_id = (vrf_id_t)ns_id; | |
a36898e7 | 688 | |
d62a17ae | 689 | /* If linking to another interface, note it. */ |
690 | if (tb[IFLA_LINK]) | |
691 | link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]); | |
692 | ||
ea7ec261 DD |
693 | /* Add interface. |
694 | * We add by index first because in some cases such as the master | |
695 | * interface, we have the index before we have the name. Fixing | |
696 | * back references on the slave interfaces is painful if not done | |
697 | * this way, i.e. by creating by ifindex. | |
698 | */ | |
699 | ifp = if_get_by_ifindex(ifi->ifi_index, vrf_id); | |
700 | set_ifindex(ifp, ifi->ifi_index, zns); /* add it to ns struct */ | |
d5c65bf1 SW |
701 | |
702 | if_set_name(ifp, name); | |
703 | ||
d62a17ae | 704 | ifp->flags = ifi->ifi_flags & 0x0000fffff; |
d62a17ae | 705 | ifp->mtu6 = ifp->mtu = *(uint32_t *)RTA_DATA(tb[IFLA_MTU]); |
706 | ifp->metric = 0; | |
594c2878 | 707 | ifp->speed = get_iflink_speed(ifp, NULL); |
d62a17ae | 708 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; |
709 | ||
710 | /* Set zebra interface type */ | |
711 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); | |
b0fa6f6a CS |
712 | if (IS_ZEBRA_IF_VRF(ifp)) |
713 | SET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK); | |
d62a17ae | 714 | |
98efddf1 DS |
715 | /* |
716 | * Just set the @link/lower-device ifindex. During nldump interfaces are | |
520ebf72 AK |
717 | * not ordered in any fashion so we may end up getting upper devices |
718 | * before lower devices. We will setup the real linkage once the dump | |
98efddf1 DS |
719 | * is complete. |
720 | */ | |
520ebf72 AK |
721 | zif = (struct zebra_if *)ifp->info; |
722 | zif->link_ifindex = link_ifindex; | |
d62a17ae | 723 | |
ba5165ec DS |
724 | if (desc) { |
725 | XFREE(MTYPE_TMP, zif->desc); | |
726 | zif->desc = XSTRDUP(MTYPE_TMP, desc); | |
727 | } | |
728 | ||
d62a17ae | 729 | /* Hardware type and address. */ |
730 | ifp->ll_type = netlink_to_zebra_link_type(ifi->ifi_type); | |
731 | netlink_interface_update_hw_addr(tb, ifp); | |
732 | ||
733 | if_add_update(ifp); | |
734 | ||
735 | /* Extract and save L2 interface information, take additional actions. | |
736 | */ | |
737 | netlink_interface_update_l2info(ifp, linkinfo[IFLA_INFO_DATA], 1); | |
738 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp)) | |
739 | zebra_l2if_update_bridge_slave(ifp, bridge_ifindex); | |
b9368db9 DD |
740 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp)) |
741 | zebra_l2if_update_bond_slave(ifp, bond_ifindex); | |
d62a17ae | 742 | |
743 | return 0; | |
1fdc9eae | 744 | } |
745 | ||
289602d7 | 746 | /* Request for specific interface or address information from the kernel */ |
85a75f1e MS |
747 | static int netlink_request_intf_addr(struct nlsock *netlink_cmd, int family, |
748 | int type, uint32_t filter_mask) | |
289602d7 | 749 | { |
d62a17ae | 750 | struct { |
751 | struct nlmsghdr n; | |
752 | struct ifinfomsg ifm; | |
753 | char buf[256]; | |
754 | } req; | |
755 | ||
756 | /* Form the request, specifying filter (rtattr) if needed. */ | |
757 | memset(&req, 0, sizeof(req)); | |
758 | req.n.nlmsg_type = type; | |
718f9b0f | 759 | req.n.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST; |
d62a17ae | 760 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
761 | req.ifm.ifi_family = family; | |
762 | ||
763 | /* Include filter, if specified. */ | |
764 | if (filter_mask) | |
765 | addattr32(&req.n, sizeof(req), IFLA_EXT_MASK, filter_mask); | |
766 | ||
85a75f1e | 767 | return netlink_request(netlink_cmd, &req.n); |
289602d7 | 768 | } |
769 | ||
1fdc9eae | 770 | /* Interface lookup by netlink socket. */ |
d62a17ae | 771 | int interface_lookup_netlink(struct zebra_ns *zns) |
1fdc9eae | 772 | { |
d62a17ae | 773 | int ret; |
85a75f1e MS |
774 | struct zebra_dplane_info dp_info; |
775 | struct nlsock *netlink_cmd = &zns->netlink_cmd; | |
776 | ||
777 | /* Capture key info from ns struct */ | |
778 | zebra_dplane_info_from_zns(&dp_info, zns, true /*is_cmd*/); | |
d62a17ae | 779 | |
780 | /* Get interface information. */ | |
85a75f1e | 781 | ret = netlink_request_intf_addr(netlink_cmd, AF_PACKET, RTM_GETLINK, 0); |
d62a17ae | 782 | if (ret < 0) |
783 | return ret; | |
85a75f1e | 784 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, |
d62a17ae | 785 | 1); |
786 | if (ret < 0) | |
787 | return ret; | |
788 | ||
789 | /* Get interface information - for bridge interfaces. */ | |
85a75f1e | 790 | ret = netlink_request_intf_addr(netlink_cmd, AF_BRIDGE, RTM_GETLINK, |
d62a17ae | 791 | RTEXT_FILTER_BRVLAN); |
792 | if (ret < 0) | |
793 | return ret; | |
85a75f1e | 794 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, |
d62a17ae | 795 | 0); |
796 | if (ret < 0) | |
797 | return ret; | |
798 | ||
799 | /* Get interface information - for bridge interfaces. */ | |
85a75f1e | 800 | ret = netlink_request_intf_addr(netlink_cmd, AF_BRIDGE, RTM_GETLINK, |
d62a17ae | 801 | RTEXT_FILTER_BRVLAN); |
802 | if (ret < 0) | |
803 | return ret; | |
85a75f1e | 804 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, |
d62a17ae | 805 | 0); |
806 | if (ret < 0) | |
807 | return ret; | |
808 | ||
520ebf72 AK |
809 | /* fixup linkages */ |
810 | zebra_if_update_all_links(); | |
d2bec88a SW |
811 | return 0; |
812 | } | |
813 | ||
814 | /** | |
815 | * interface_addr_lookup_netlink() - Look up interface addresses | |
816 | * | |
817 | * @zns: Zebra netlink socket | |
818 | * Return: Result status | |
819 | */ | |
820 | static int interface_addr_lookup_netlink(struct zebra_ns *zns) | |
821 | { | |
822 | int ret; | |
823 | struct zebra_dplane_info dp_info; | |
824 | struct nlsock *netlink_cmd = &zns->netlink_cmd; | |
825 | ||
826 | /* Capture key info from ns struct */ | |
827 | zebra_dplane_info_from_zns(&dp_info, zns, true /*is_cmd*/); | |
520ebf72 | 828 | |
d62a17ae | 829 | /* Get IPv4 address of the interfaces. */ |
85a75f1e | 830 | ret = netlink_request_intf_addr(netlink_cmd, AF_INET, RTM_GETADDR, 0); |
d62a17ae | 831 | if (ret < 0) |
832 | return ret; | |
85a75f1e | 833 | ret = netlink_parse_info(netlink_interface_addr, netlink_cmd, &dp_info, |
d62a17ae | 834 | 0, 1); |
835 | if (ret < 0) | |
836 | return ret; | |
837 | ||
838 | /* Get IPv6 address of the interfaces. */ | |
85a75f1e | 839 | ret = netlink_request_intf_addr(netlink_cmd, AF_INET6, RTM_GETADDR, 0); |
d62a17ae | 840 | if (ret < 0) |
841 | return ret; | |
85a75f1e | 842 | ret = netlink_parse_info(netlink_interface_addr, netlink_cmd, &dp_info, |
d62a17ae | 843 | 0, 1); |
844 | if (ret < 0) | |
845 | return ret; | |
846 | ||
847 | return 0; | |
1fdc9eae | 848 | } |
849 | ||
e0ae31b8 DS |
850 | int kernel_interface_set_master(struct interface *master, |
851 | struct interface *slave) | |
852 | { | |
853 | struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT); | |
854 | ||
855 | struct { | |
856 | struct nlmsghdr n; | |
857 | struct ifinfomsg ifa; | |
858 | char buf[NL_PKT_BUF_SIZE]; | |
859 | } req; | |
860 | ||
0d6f7fd6 | 861 | memset(&req, 0, sizeof(req)); |
e0ae31b8 DS |
862 | |
863 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
864 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
865 | req.n.nlmsg_type = RTM_SETLINK; | |
866 | req.n.nlmsg_pid = zns->netlink_cmd.snl.nl_pid; | |
867 | ||
868 | req.ifa.ifi_index = slave->ifindex; | |
869 | ||
0d6f7fd6 DA |
870 | addattr_l(&req.n, sizeof(req), IFLA_MASTER, &master->ifindex, 4); |
871 | addattr_l(&req.n, sizeof(req), IFLA_LINK, &slave->ifindex, 4); | |
e0ae31b8 DS |
872 | |
873 | return netlink_talk(netlink_talk_filter, &req.n, &zns->netlink_cmd, zns, | |
874 | 0); | |
875 | } | |
876 | ||
1fdc9eae | 877 | /* Interface address modification. */ |
64168803 | 878 | static int netlink_address_ctx(const struct zebra_dplane_ctx *ctx) |
1fdc9eae | 879 | { |
d62a17ae | 880 | int bytelen; |
64168803 MS |
881 | const struct prefix *p; |
882 | int cmd; | |
883 | const char *label; | |
1fdc9eae | 884 | |
d62a17ae | 885 | struct { |
886 | struct nlmsghdr n; | |
887 | struct ifaddrmsg ifa; | |
888 | char buf[NL_PKT_BUF_SIZE]; | |
889 | } req; | |
1fdc9eae | 890 | |
64168803 MS |
891 | p = dplane_ctx_get_intf_addr(ctx); |
892 | memset(&req, 0, sizeof(req) - NL_PKT_BUF_SIZE); | |
1fdc9eae | 893 | |
64168803 | 894 | bytelen = (p->family == AF_INET ? 4 : 16); |
1fdc9eae | 895 | |
d62a17ae | 896 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)); |
897 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
a55ba23f | 898 | |
64168803 MS |
899 | if (dplane_ctx_get_op(ctx) == DPLANE_OP_ADDR_INSTALL) |
900 | cmd = RTM_NEWADDR; | |
901 | else | |
902 | cmd = RTM_DELADDR; | |
903 | ||
904 | req.n.nlmsg_type = cmd; | |
905 | req.ifa.ifa_family = p->family; | |
1fdc9eae | 906 | |
64168803 | 907 | req.ifa.ifa_index = dplane_ctx_get_ifindex(ctx); |
1fdc9eae | 908 | |
64168803 | 909 | addattr_l(&req.n, sizeof(req), IFA_LOCAL, &p->u.prefix, bytelen); |
1fdc9eae | 910 | |
64168803 MS |
911 | if (p->family == AF_INET) { |
912 | if (dplane_ctx_intf_is_connected(ctx)) { | |
913 | p = dplane_ctx_get_intf_dest(ctx); | |
914 | addattr_l(&req.n, sizeof(req), IFA_ADDRESS, | |
915 | &p->u.prefix, bytelen); | |
0f3af738 JW |
916 | } else if (cmd == RTM_NEWADDR) { |
917 | struct in_addr broad = { | |
918 | .s_addr = ipv4_broadcast_addr(p->u.prefix4.s_addr, | |
919 | p->prefixlen) | |
920 | }; | |
64168803 | 921 | addattr_l(&req.n, sizeof(req), IFA_BROADCAST, |
0f3af738 | 922 | &broad, bytelen); |
d62a17ae | 923 | } |
924 | } | |
1fdc9eae | 925 | |
64168803 | 926 | /* p is now either address or destination/bcast addr */ |
e8d19a05 DL |
927 | req.ifa.ifa_prefixlen = p->prefixlen; |
928 | ||
64168803 | 929 | if (dplane_ctx_intf_is_secondary(ctx)) |
d62a17ae | 930 | SET_FLAG(req.ifa.ifa_flags, IFA_F_SECONDARY); |
1fdc9eae | 931 | |
64168803 MS |
932 | if (dplane_ctx_intf_has_label(ctx)) { |
933 | label = dplane_ctx_get_intf_label(ctx); | |
934 | addattr_l(&req.n, sizeof(req), IFA_LABEL, label, | |
935 | strlen(label) + 1); | |
936 | } | |
1fdc9eae | 937 | |
64168803 MS |
938 | return netlink_talk_info(netlink_talk_filter, &req.n, |
939 | dplane_ctx_get_ns(ctx), 0); | |
e86b71f1 PG |
940 | } |
941 | ||
64168803 | 942 | enum zebra_dplane_result kernel_address_update_ctx(struct zebra_dplane_ctx *ctx) |
e86b71f1 | 943 | { |
64168803 MS |
944 | return (netlink_address_ctx(ctx) == 0 ? |
945 | ZEBRA_DPLANE_REQUEST_SUCCESS : ZEBRA_DPLANE_REQUEST_FAILURE); | |
e86b71f1 PG |
946 | } |
947 | ||
2414abd3 | 948 | int netlink_interface_addr(struct nlmsghdr *h, ns_id_t ns_id, int startup) |
1fdc9eae | 949 | { |
d62a17ae | 950 | int len; |
951 | struct ifaddrmsg *ifa; | |
952 | struct rtattr *tb[IFA_MAX + 1]; | |
953 | struct interface *ifp; | |
954 | void *addr; | |
955 | void *broad; | |
d7c0a89a | 956 | uint8_t flags = 0; |
d62a17ae | 957 | char *label = NULL; |
958 | struct zebra_ns *zns; | |
cde1af84 | 959 | uint32_t metric = METRIC_MAX; |
9254efed | 960 | uint32_t kernel_flags = 0; |
d62a17ae | 961 | |
962 | zns = zebra_ns_lookup(ns_id); | |
963 | ifa = NLMSG_DATA(h); | |
964 | ||
8a1b681c | 965 | if (ifa->ifa_family != AF_INET && ifa->ifa_family != AF_INET6) { |
9df414fe | 966 | flog_warn( |
e914ccbe | 967 | EC_ZEBRA_UNKNOWN_FAMILY, |
87b5d1b0 DS |
968 | "Invalid address family: %u received from kernel interface addr change: %s", |
969 | ifa->ifa_family, nl_msg_type_to_str(h->nlmsg_type)); | |
d62a17ae | 970 | return 0; |
8a1b681c | 971 | } |
d62a17ae | 972 | |
973 | if (h->nlmsg_type != RTM_NEWADDR && h->nlmsg_type != RTM_DELADDR) | |
974 | return 0; | |
975 | ||
976 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifaddrmsg)); | |
9bdf8618 | 977 | if (len < 0) { |
15569c58 DA |
978 | zlog_err( |
979 | "%s: Message received from netlink is of a broken size: %d %zu", | |
980 | __func__, h->nlmsg_len, | |
981 | (size_t)NLMSG_LENGTH(sizeof(struct ifaddrmsg))); | |
d62a17ae | 982 | return -1; |
9bdf8618 | 983 | } |
d62a17ae | 984 | |
0d6f7fd6 | 985 | memset(tb, 0, sizeof(tb)); |
d62a17ae | 986 | netlink_parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), len); |
987 | ||
988 | ifp = if_lookup_by_index_per_ns(zns, ifa->ifa_index); | |
989 | if (ifp == NULL) { | |
af4c2728 | 990 | flog_err( |
450971aa | 991 | EC_LIB_INTERFACE, |
d62a17ae | 992 | "netlink_interface_addr can't find interface by index %d", |
993 | ifa->ifa_index); | |
994 | return -1; | |
995 | } | |
996 | ||
9254efed DS |
997 | /* Flags passed through */ |
998 | if (tb[IFA_FLAGS]) | |
999 | kernel_flags = *(int *)RTA_DATA(tb[IFA_FLAGS]); | |
1000 | else | |
1001 | kernel_flags = ifa->ifa_flags; | |
1002 | ||
d62a17ae | 1003 | if (IS_ZEBRA_DEBUG_KERNEL) /* remove this line to see initial ifcfg */ |
1004 | { | |
1005 | char buf[BUFSIZ]; | |
1006 | zlog_debug("netlink_interface_addr %s %s flags 0x%x:", | |
1007 | nl_msg_type_to_str(h->nlmsg_type), ifp->name, | |
9254efed | 1008 | kernel_flags); |
d62a17ae | 1009 | if (tb[IFA_LOCAL]) |
1010 | zlog_debug(" IFA_LOCAL %s/%d", | |
1011 | inet_ntop(ifa->ifa_family, | |
1012 | RTA_DATA(tb[IFA_LOCAL]), buf, | |
1013 | BUFSIZ), | |
1014 | ifa->ifa_prefixlen); | |
1015 | if (tb[IFA_ADDRESS]) | |
1016 | zlog_debug(" IFA_ADDRESS %s/%d", | |
1017 | inet_ntop(ifa->ifa_family, | |
1018 | RTA_DATA(tb[IFA_ADDRESS]), buf, | |
1019 | BUFSIZ), | |
1020 | ifa->ifa_prefixlen); | |
1021 | if (tb[IFA_BROADCAST]) | |
1022 | zlog_debug(" IFA_BROADCAST %s/%d", | |
1023 | inet_ntop(ifa->ifa_family, | |
1024 | RTA_DATA(tb[IFA_BROADCAST]), buf, | |
1025 | BUFSIZ), | |
1026 | ifa->ifa_prefixlen); | |
1027 | if (tb[IFA_LABEL] && strcmp(ifp->name, RTA_DATA(tb[IFA_LABEL]))) | |
1028 | zlog_debug(" IFA_LABEL %s", | |
1029 | (char *)RTA_DATA(tb[IFA_LABEL])); | |
1030 | ||
1031 | if (tb[IFA_CACHEINFO]) { | |
1032 | struct ifa_cacheinfo *ci = RTA_DATA(tb[IFA_CACHEINFO]); | |
1033 | zlog_debug(" IFA_CACHEINFO pref %d, valid %d", | |
1034 | ci->ifa_prefered, ci->ifa_valid); | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | /* logic copied from iproute2/ip/ipaddress.c:print_addrinfo() */ | |
1039 | if (tb[IFA_LOCAL] == NULL) | |
1040 | tb[IFA_LOCAL] = tb[IFA_ADDRESS]; | |
1041 | if (tb[IFA_ADDRESS] == NULL) | |
1042 | tb[IFA_ADDRESS] = tb[IFA_LOCAL]; | |
1043 | ||
1044 | /* local interface address */ | |
1045 | addr = (tb[IFA_LOCAL] ? RTA_DATA(tb[IFA_LOCAL]) : NULL); | |
1046 | ||
1047 | /* is there a peer address? */ | |
1048 | if (tb[IFA_ADDRESS] | |
1049 | && memcmp(RTA_DATA(tb[IFA_ADDRESS]), RTA_DATA(tb[IFA_LOCAL]), | |
1050 | RTA_PAYLOAD(tb[IFA_ADDRESS]))) { | |
1051 | broad = RTA_DATA(tb[IFA_ADDRESS]); | |
1052 | SET_FLAG(flags, ZEBRA_IFA_PEER); | |
1053 | } else | |
1054 | /* seeking a broadcast address */ | |
1055 | broad = (tb[IFA_BROADCAST] ? RTA_DATA(tb[IFA_BROADCAST]) | |
1056 | : NULL); | |
1057 | ||
1058 | /* addr is primary key, SOL if we don't have one */ | |
1059 | if (addr == NULL) { | |
14a4d9d0 | 1060 | zlog_debug("%s: Local Interface Address is NULL for %s", |
1061 | __func__, ifp->name); | |
d62a17ae | 1062 | return -1; |
1063 | } | |
1064 | ||
1065 | /* Flags. */ | |
9254efed | 1066 | if (kernel_flags & IFA_F_SECONDARY) |
d62a17ae | 1067 | SET_FLAG(flags, ZEBRA_IFA_SECONDARY); |
1068 | ||
1069 | /* Label */ | |
1070 | if (tb[IFA_LABEL]) | |
1071 | label = (char *)RTA_DATA(tb[IFA_LABEL]); | |
1072 | ||
2e1cc436 | 1073 | if (label && strcmp(ifp->name, label) == 0) |
d62a17ae | 1074 | label = NULL; |
1075 | ||
cde1af84 AK |
1076 | if (tb[IFA_RT_PRIORITY]) |
1077 | metric = *(uint32_t *)RTA_DATA(tb[IFA_RT_PRIORITY]); | |
1078 | ||
d62a17ae | 1079 | /* Register interface address to the interface. */ |
1080 | if (ifa->ifa_family == AF_INET) { | |
930571d2 | 1081 | if (ifa->ifa_prefixlen > IPV4_MAX_BITLEN) { |
e17d9b2d | 1082 | zlog_err( |
87b5d1b0 DS |
1083 | "Invalid prefix length: %u received from kernel interface addr change: %s", |
1084 | ifa->ifa_prefixlen, | |
1085 | nl_msg_type_to_str(h->nlmsg_type)); | |
e17d9b2d | 1086 | return -1; |
930571d2 | 1087 | } |
d62a17ae | 1088 | if (h->nlmsg_type == RTM_NEWADDR) |
1089 | connected_add_ipv4(ifp, flags, (struct in_addr *)addr, | |
1090 | ifa->ifa_prefixlen, | |
cde1af84 AK |
1091 | (struct in_addr *)broad, label, |
1092 | metric); | |
d62a17ae | 1093 | else |
1094 | connected_delete_ipv4( | |
1095 | ifp, flags, (struct in_addr *)addr, | |
fd267f08 | 1096 | ifa->ifa_prefixlen, NULL); |
d62a17ae | 1097 | } |
1098 | if (ifa->ifa_family == AF_INET6) { | |
930571d2 | 1099 | if (ifa->ifa_prefixlen > IPV6_MAX_BITLEN) { |
e17d9b2d | 1100 | zlog_err( |
87b5d1b0 DS |
1101 | "Invalid prefix length: %u received from kernel interface addr change: %s", |
1102 | ifa->ifa_prefixlen, | |
1103 | nl_msg_type_to_str(h->nlmsg_type)); | |
e17d9b2d | 1104 | return -1; |
930571d2 | 1105 | } |
d62a17ae | 1106 | if (h->nlmsg_type == RTM_NEWADDR) { |
1107 | /* Only consider valid addresses; we'll not get a | |
1108 | * notification from | |
1109 | * the kernel till IPv6 DAD has completed, but at init | |
1110 | * time, Quagga | |
1111 | * does query for and will receive all addresses. | |
1112 | */ | |
9254efed | 1113 | if (!(kernel_flags |
d62a17ae | 1114 | & (IFA_F_DADFAILED | IFA_F_TENTATIVE))) |
60466a63 QY |
1115 | connected_add_ipv6(ifp, flags, |
1116 | (struct in6_addr *)addr, | |
60c0687a | 1117 | (struct in6_addr *)broad, |
cde1af84 AK |
1118 | ifa->ifa_prefixlen, label, |
1119 | metric); | |
d62a17ae | 1120 | } else |
1121 | connected_delete_ipv6(ifp, (struct in6_addr *)addr, | |
fd267f08 | 1122 | NULL, ifa->ifa_prefixlen); |
d62a17ae | 1123 | } |
1124 | ||
2a181147 SW |
1125 | |
1126 | /* | |
1127 | * Linux kernel does not send route delete on interface down/addr del | |
1128 | * so we have to re-process routes it owns (i.e. kernel routes) | |
1129 | */ | |
1130 | if (h->nlmsg_type != RTM_NEWADDR) | |
1131 | rib_update(RIB_UPDATE_KERNEL); | |
1132 | ||
d62a17ae | 1133 | return 0; |
1fdc9eae | 1134 | } |
1135 | ||
2414abd3 | 1136 | int netlink_link_change(struct nlmsghdr *h, ns_id_t ns_id, int startup) |
1fdc9eae | 1137 | { |
d62a17ae | 1138 | int len; |
1139 | struct ifinfomsg *ifi; | |
1140 | struct rtattr *tb[IFLA_MAX + 1]; | |
1141 | struct rtattr *linkinfo[IFLA_MAX + 1]; | |
1142 | struct interface *ifp; | |
1143 | char *name = NULL; | |
1144 | char *kind = NULL; | |
48884c6b | 1145 | char *desc = NULL; |
d62a17ae | 1146 | char *slave_kind = NULL; |
1147 | struct zebra_ns *zns; | |
1148 | vrf_id_t vrf_id = VRF_DEFAULT; | |
1149 | zebra_iftype_t zif_type = ZEBRA_IF_OTHER; | |
1150 | zebra_slave_iftype_t zif_slave_type = ZEBRA_IF_SLAVE_NONE; | |
1151 | ifindex_t bridge_ifindex = IFINDEX_INTERNAL; | |
b9368db9 | 1152 | ifindex_t bond_ifindex = IFINDEX_INTERNAL; |
d62a17ae | 1153 | ifindex_t link_ifindex = IFINDEX_INTERNAL; |
97c4e1d0 | 1154 | uint8_t old_hw_addr[INTERFACE_HWADDR_MAX]; |
ba5165ec | 1155 | struct zebra_if *zif; |
d62a17ae | 1156 | |
1157 | zns = zebra_ns_lookup(ns_id); | |
1158 | ifi = NLMSG_DATA(h); | |
1159 | ||
fe533c56 | 1160 | /* assume if not default zns, then new VRF */ |
d62a17ae | 1161 | if (!(h->nlmsg_type == RTM_NEWLINK || h->nlmsg_type == RTM_DELLINK)) { |
1162 | /* If this is not link add/delete message so print warning. */ | |
87b5d1b0 DS |
1163 | zlog_debug("netlink_link_change: wrong kernel message %s", |
1164 | nl_msg_type_to_str(h->nlmsg_type)); | |
d62a17ae | 1165 | return 0; |
1166 | } | |
1167 | ||
8a1b681c SW |
1168 | if (!(ifi->ifi_family == AF_UNSPEC || ifi->ifi_family == AF_BRIDGE |
1169 | || ifi->ifi_family == AF_INET6)) { | |
9df414fe | 1170 | flog_warn( |
e914ccbe | 1171 | EC_ZEBRA_UNKNOWN_FAMILY, |
87b5d1b0 DS |
1172 | "Invalid address family: %u received from kernel link change: %s", |
1173 | ifi->ifi_family, nl_msg_type_to_str(h->nlmsg_type)); | |
8a1b681c SW |
1174 | return 0; |
1175 | } | |
1176 | ||
d62a17ae | 1177 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
9bdf8618 | 1178 | if (len < 0) { |
15569c58 DA |
1179 | zlog_err( |
1180 | "%s: Message received from netlink is of a broken size %d %zu", | |
1181 | __func__, h->nlmsg_len, | |
1182 | (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg))); | |
d62a17ae | 1183 | return -1; |
9bdf8618 | 1184 | } |
d62a17ae | 1185 | |
1186 | /* We are interested in some AF_BRIDGE notifications. */ | |
1187 | if (ifi->ifi_family == AF_BRIDGE) | |
1188 | return netlink_bridge_interface(h, len, ns_id, startup); | |
1189 | ||
1190 | /* Looking up interface name. */ | |
0d6f7fd6 DA |
1191 | memset(tb, 0, sizeof(tb)); |
1192 | memset(linkinfo, 0, sizeof(linkinfo)); | |
d62a17ae | 1193 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
1fdc9eae | 1194 | |
d62a17ae | 1195 | /* check for wireless messages to ignore */ |
1196 | if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0)) { | |
1197 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1198 | zlog_debug("%s: ignoring IFLA_WIRELESS message", | |
1199 | __func__); | |
1200 | return 0; | |
1201 | } | |
1fdc9eae | 1202 | |
d62a17ae | 1203 | if (tb[IFLA_IFNAME] == NULL) |
1204 | return -1; | |
1205 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
1fdc9eae | 1206 | |
d62a17ae | 1207 | if (tb[IFLA_LINKINFO]) { |
1208 | parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb[IFLA_LINKINFO]); | |
1fdc9eae | 1209 | |
d62a17ae | 1210 | if (linkinfo[IFLA_INFO_KIND]) |
1211 | kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]); | |
1fdc9eae | 1212 | |
d62a17ae | 1213 | if (linkinfo[IFLA_INFO_SLAVE_KIND]) |
1214 | slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]); | |
1fdc9eae | 1215 | |
d62a17ae | 1216 | netlink_determine_zebra_iftype(kind, &zif_type); |
1217 | } | |
6675513d | 1218 | |
d62a17ae | 1219 | /* If linking to another interface, note it. */ |
1220 | if (tb[IFLA_LINK]) | |
1221 | link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]); | |
1fdc9eae | 1222 | |
48884c6b DS |
1223 | if (tb[IFLA_IFALIAS]) { |
1224 | desc = (char *)RTA_DATA(tb[IFLA_IFALIAS]); | |
1225 | } | |
1226 | ||
d62a17ae | 1227 | /* If VRF, create or update the VRF structure itself. */ |
78dd30b2 | 1228 | if (zif_type == ZEBRA_IF_VRF && !vrf_is_backend_netns()) { |
d62a17ae | 1229 | netlink_vrf_change(h, tb[IFLA_LINKINFO], name); |
1230 | vrf_id = (vrf_id_t)ifi->ifi_index; | |
1231 | } | |
1fdc9eae | 1232 | |
d62a17ae | 1233 | /* See if interface is present. */ |
1234 | ifp = if_lookup_by_name_per_ns(zns, name); | |
1235 | ||
1236 | if (h->nlmsg_type == RTM_NEWLINK) { | |
1237 | if (tb[IFLA_MASTER]) { | |
78dd30b2 PG |
1238 | if (slave_kind && (strcmp(slave_kind, "vrf") == 0) |
1239 | && !vrf_is_backend_netns()) { | |
d62a17ae | 1240 | zif_slave_type = ZEBRA_IF_SLAVE_VRF; |
d7c0a89a | 1241 | vrf_id = *(uint32_t *)RTA_DATA(tb[IFLA_MASTER]); |
d62a17ae | 1242 | } else if (slave_kind |
1243 | && (strcmp(slave_kind, "bridge") == 0)) { | |
1244 | zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE; | |
1245 | bridge_ifindex = | |
1246 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
b9368db9 DD |
1247 | } else if (slave_kind |
1248 | && (strcmp(slave_kind, "bond") == 0)) { | |
1249 | zif_slave_type = ZEBRA_IF_SLAVE_BOND; | |
1250 | bond_ifindex = | |
1251 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
d62a17ae | 1252 | } else |
1253 | zif_slave_type = ZEBRA_IF_SLAVE_OTHER; | |
1254 | } | |
fe533c56 PG |
1255 | if (vrf_is_backend_netns()) |
1256 | vrf_id = (vrf_id_t)ns_id; | |
d62a17ae | 1257 | if (ifp == NULL |
1258 | || !CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE)) { | |
1259 | /* Add interface notification from kernel */ | |
1260 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1261 | zlog_debug( | |
1262 | "RTM_NEWLINK ADD for %s(%u) vrf_id %u type %d " | |
1263 | "sl_type %d master %u flags 0x%x", | |
1264 | name, ifi->ifi_index, vrf_id, zif_type, | |
1265 | zif_slave_type, bridge_ifindex, | |
1266 | ifi->ifi_flags); | |
1267 | ||
1268 | if (ifp == NULL) { | |
1269 | /* unknown interface */ | |
a36898e7 | 1270 | ifp = if_get_by_name(name, vrf_id); |
d62a17ae | 1271 | } else { |
1272 | /* pre-configured interface, learnt now */ | |
a36898e7 DS |
1273 | if (ifp->vrf_id != vrf_id) |
1274 | if_update_to_new_vrf(ifp, vrf_id); | |
d62a17ae | 1275 | } |
1276 | ||
1277 | /* Update interface information. */ | |
1278 | set_ifindex(ifp, ifi->ifi_index, zns); | |
1279 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
d23b983b | 1280 | if (!tb[IFLA_MTU]) { |
9df414fe | 1281 | zlog_debug( |
d23b983b SW |
1282 | "RTM_NEWLINK for interface %s(%u) without MTU set", |
1283 | name, ifi->ifi_index); | |
1284 | return 0; | |
1285 | } | |
d62a17ae | 1286 | ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]); |
1287 | ifp->metric = 0; | |
1288 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; | |
1289 | ||
1290 | /* Set interface type */ | |
1291 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); | |
b0fa6f6a CS |
1292 | if (IS_ZEBRA_IF_VRF(ifp)) |
1293 | SET_FLAG(ifp->status, | |
1294 | ZEBRA_INTERFACE_VRF_LOOPBACK); | |
d62a17ae | 1295 | |
1296 | /* Update link. */ | |
680c278f | 1297 | zebra_if_update_link(ifp, link_ifindex, ns_id); |
d62a17ae | 1298 | |
1299 | netlink_interface_update_hw_addr(tb, ifp); | |
1300 | ||
1301 | /* Inform clients, install any configured addresses. */ | |
1302 | if_add_update(ifp); | |
1303 | ||
1304 | /* Extract and save L2 interface information, take | |
1305 | * additional actions. */ | |
1306 | netlink_interface_update_l2info( | |
1307 | ifp, linkinfo[IFLA_INFO_DATA], 1); | |
1308 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp)) | |
1309 | zebra_l2if_update_bridge_slave(ifp, | |
1310 | bridge_ifindex); | |
b9368db9 DD |
1311 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp)) |
1312 | zebra_l2if_update_bond_slave(ifp, bond_ifindex); | |
a36898e7 | 1313 | } else if (ifp->vrf_id != vrf_id) { |
d62a17ae | 1314 | /* VRF change for an interface. */ |
1315 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1316 | zlog_debug( | |
1317 | "RTM_NEWLINK vrf-change for %s(%u) " | |
1318 | "vrf_id %u -> %u flags 0x%x", | |
a36898e7 DS |
1319 | name, ifp->ifindex, ifp->vrf_id, vrf_id, |
1320 | ifi->ifi_flags); | |
d62a17ae | 1321 | |
a36898e7 | 1322 | if_handle_vrf_change(ifp, vrf_id); |
d62a17ae | 1323 | } else { |
b9368db9 | 1324 | bool was_bridge_slave, was_bond_slave; |
d62a17ae | 1325 | |
1326 | /* Interface update. */ | |
1327 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1328 | zlog_debug( | |
1329 | "RTM_NEWLINK update for %s(%u) " | |
1330 | "sl_type %d master %u flags 0x%x", | |
1331 | name, ifp->ifindex, zif_slave_type, | |
1332 | bridge_ifindex, ifi->ifi_flags); | |
1333 | ||
1334 | set_ifindex(ifp, ifi->ifi_index, zns); | |
d23b983b | 1335 | if (!tb[IFLA_MTU]) { |
9df414fe | 1336 | zlog_debug( |
d23b983b SW |
1337 | "RTM_NEWLINK for interface %s(%u) without MTU set", |
1338 | name, ifi->ifi_index); | |
1339 | return 0; | |
1340 | } | |
d62a17ae | 1341 | ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]); |
1342 | ifp->metric = 0; | |
1343 | ||
1344 | /* Update interface type - NOTE: Only slave_type can | |
1345 | * change. */ | |
1346 | was_bridge_slave = IS_ZEBRA_IF_BRIDGE_SLAVE(ifp); | |
b9368db9 | 1347 | was_bond_slave = IS_ZEBRA_IF_BOND_SLAVE(ifp); |
d62a17ae | 1348 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); |
1349 | ||
97c4e1d0 CS |
1350 | memcpy(old_hw_addr, ifp->hw_addr, INTERFACE_HWADDR_MAX); |
1351 | ||
d62a17ae | 1352 | netlink_interface_update_hw_addr(tb, ifp); |
1353 | ||
1354 | if (if_is_no_ptm_operative(ifp)) { | |
1355 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
1356 | if (!if_is_no_ptm_operative(ifp)) { | |
1357 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1358 | zlog_debug( | |
1359 | "Intf %s(%u) has gone DOWN", | |
1360 | name, ifp->ifindex); | |
1361 | if_down(ifp); | |
2a181147 | 1362 | rib_update(RIB_UPDATE_KERNEL); |
d62a17ae | 1363 | } else if (if_is_operative(ifp)) { |
1364 | /* Must notify client daemons of new | |
1365 | * interface status. */ | |
1366 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1367 | zlog_debug( | |
1368 | "Intf %s(%u) PTM up, notifying clients", | |
1369 | name, ifp->ifindex); | |
1370 | zebra_interface_up_update(ifp); | |
97c4e1d0 CS |
1371 | |
1372 | /* Update EVPN VNI when SVI MAC change | |
1373 | */ | |
1374 | if (IS_ZEBRA_IF_VLAN(ifp) && | |
1375 | memcmp(old_hw_addr, ifp->hw_addr, | |
1376 | INTERFACE_HWADDR_MAX)) { | |
1377 | struct interface *link_if; | |
1378 | ||
1379 | link_if = | |
1380 | if_lookup_by_index_per_ns( | |
1381 | zebra_ns_lookup(NS_DEFAULT), | |
1382 | link_ifindex); | |
1383 | if (link_if) | |
1384 | zebra_vxlan_svi_up(ifp, | |
1385 | link_if); | |
1386 | } | |
d62a17ae | 1387 | } |
1388 | } else { | |
1389 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
1390 | if (if_is_operative(ifp)) { | |
1391 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1392 | zlog_debug( | |
1393 | "Intf %s(%u) has come UP", | |
1394 | name, ifp->ifindex); | |
1395 | if_up(ifp); | |
6f908ded QY |
1396 | } else { |
1397 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1398 | zlog_debug( | |
7913714e | 1399 | "Intf %s(%u) has gone DOWN", |
6f908ded QY |
1400 | name, ifp->ifindex); |
1401 | if_down(ifp); | |
2a181147 | 1402 | rib_update(RIB_UPDATE_KERNEL); |
d62a17ae | 1403 | } |
1404 | } | |
1405 | ||
1406 | /* Extract and save L2 interface information, take | |
1407 | * additional actions. */ | |
1408 | netlink_interface_update_l2info( | |
1409 | ifp, linkinfo[IFLA_INFO_DATA], 0); | |
1410 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp) || was_bridge_slave) | |
1411 | zebra_l2if_update_bridge_slave(ifp, | |
1412 | bridge_ifindex); | |
b9368db9 DD |
1413 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp) || was_bond_slave) |
1414 | zebra_l2if_update_bond_slave(ifp, bond_ifindex); | |
d62a17ae | 1415 | } |
26f13577 DS |
1416 | |
1417 | zif = ifp->info; | |
1418 | if (zif) { | |
1419 | XFREE(MTYPE_TMP, zif->desc); | |
1420 | if (desc) | |
1421 | zif->desc = XSTRDUP(MTYPE_TMP, desc); | |
1422 | } | |
d62a17ae | 1423 | } else { |
1424 | /* Delete interface notification from kernel */ | |
1425 | if (ifp == NULL) { | |
9df414fe QY |
1426 | if (IS_ZEBRA_DEBUG_KERNEL) |
1427 | zlog_debug( | |
1428 | "RTM_DELLINK for unknown interface %s(%u)", | |
1429 | name, ifi->ifi_index); | |
d62a17ae | 1430 | return 0; |
1431 | } | |
1432 | ||
1433 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1434 | zlog_debug("RTM_DELLINK for %s(%u)", name, | |
1435 | ifp->ifindex); | |
1436 | ||
1437 | UNSET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK); | |
1438 | ||
1439 | /* Special handling for bridge or VxLAN interfaces. */ | |
1440 | if (IS_ZEBRA_IF_BRIDGE(ifp)) | |
1441 | zebra_l2_bridge_del(ifp); | |
1442 | else if (IS_ZEBRA_IF_VXLAN(ifp)) | |
1443 | zebra_l2_vxlanif_del(ifp); | |
1444 | ||
1445 | if (!IS_ZEBRA_IF_VRF(ifp)) | |
1446 | if_delete_update(ifp); | |
1fdc9eae | 1447 | } |
1448 | ||
d62a17ae | 1449 | return 0; |
1fdc9eae | 1450 | } |
718e3744 | 1451 | |
c3bd894e QY |
1452 | int netlink_protodown(struct interface *ifp, bool down) |
1453 | { | |
1454 | struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT); | |
1455 | ||
1456 | struct { | |
1457 | struct nlmsghdr n; | |
1458 | struct ifinfomsg ifa; | |
1459 | char buf[NL_PKT_BUF_SIZE]; | |
1460 | } req; | |
1461 | ||
2fff50ec | 1462 | memset(&req, 0, sizeof(req)); |
c3bd894e QY |
1463 | |
1464 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
1465 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
1466 | req.n.nlmsg_type = RTM_SETLINK; | |
1467 | req.n.nlmsg_pid = zns->netlink_cmd.snl.nl_pid; | |
1468 | ||
1469 | req.ifa.ifi_index = ifp->ifindex; | |
1470 | ||
bd2481c4 | 1471 | addattr_l(&req.n, sizeof(req), IFLA_PROTO_DOWN, &down, sizeof(down)); |
2fff50ec | 1472 | addattr_l(&req.n, sizeof(req), IFLA_LINK, &ifp->ifindex, 4); |
c3bd894e QY |
1473 | |
1474 | return netlink_talk(netlink_talk_filter, &req.n, &zns->netlink_cmd, zns, | |
1475 | 0); | |
1476 | } | |
1477 | ||
718e3744 | 1478 | /* Interface information read by netlink. */ |
d62a17ae | 1479 | void interface_list(struct zebra_ns *zns) |
718e3744 | 1480 | { |
d62a17ae | 1481 | interface_lookup_netlink(zns); |
d9f5b2f5 SW |
1482 | /* We add routes for interface address, |
1483 | * so we need to get the nexthop info | |
1484 | * from the kernel before we can do that | |
1485 | */ | |
81505946 | 1486 | netlink_nexthop_read(zns); |
cc4e0650 | 1487 | |
d2bec88a | 1488 | interface_addr_lookup_netlink(zns); |
718e3744 | 1489 | } |
ddfeb486 DL |
1490 | |
1491 | #endif /* GNU_LINUX */ |