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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 | |
077c07cc PG |
32 | #define _LINUX_IF_H |
33 | #define _LINUX_IP_H | |
6675513d | 34 | |
ba85366a | 35 | #include <netinet/if_ether.h> |
6675513d | 36 | #include <linux/if_bridge.h> |
ba777396 | 37 | #include <linux/if_link.h> |
077c07cc | 38 | #include <linux/if_tunnel.h> |
1fdc9eae | 39 | #include <net/if_arp.h> |
535fe877 DS |
40 | #include <linux/sockios.h> |
41 | #include <linux/ethtool.h> | |
1fdc9eae | 42 | |
43 | #include "linklist.h" | |
44 | #include "if.h" | |
45 | #include "log.h" | |
46 | #include "prefix.h" | |
47 | #include "connected.h" | |
48 | #include "table.h" | |
49 | #include "memory.h" | |
1fdc9eae | 50 | #include "rib.h" |
51 | #include "thread.h" | |
52 | #include "privs.h" | |
53 | #include "nexthop.h" | |
54 | #include "vrf.h" | |
7922fc65 | 55 | #include "vrf_int.h" |
1fdc9eae | 56 | #include "mpls.h" |
174482ef | 57 | #include "lib_errors.h" |
718e3744 | 58 | |
5e6a74d8 | 59 | #include "vty.h" |
7dbeea9d | 60 | #include "zebra/zserv.h" |
1fdc9eae | 61 | #include "zebra/zebra_ns.h" |
62 | #include "zebra/zebra_vrf.h" | |
63 | #include "zebra/rt.h" | |
64 | #include "zebra/redistribute.h" | |
65 | #include "zebra/interface.h" | |
66 | #include "zebra/debug.h" | |
67 | #include "zebra/rtadv.h" | |
68 | #include "zebra/zebra_ptm.h" | |
69 | #include "zebra/zebra_mpls.h" | |
70 | #include "zebra/kernel_netlink.h" | |
d9f5b2f5 | 71 | #include "zebra/rt_netlink.h" |
1fdc9eae | 72 | #include "zebra/if_netlink.h" |
9df414fe | 73 | #include "zebra/zebra_errors.h" |
97c4e1d0 | 74 | #include "zebra/zebra_vxlan.h" |
42b56639 | 75 | #include "zebra/zebra_evpn_mh.h" |
e3d3fa06 | 76 | #include "zebra/zebra_l2.h" |
ebb61fca | 77 | #include "zebra/netconf_netlink.h" |
d42e6142 | 78 | #include "zebra/zebra_trace.h" |
1fdc9eae | 79 | |
0268f30e | 80 | extern struct zebra_privs_t zserv_privs; |
5d414138 | 81 | uint8_t frr_protodown_r_bit = FRR_PROTODOWN_REASON_DEFAULT_BIT; |
1fdc9eae | 82 | |
83 | /* Note: on netlink systems, there should be a 1-to-1 mapping between interface | |
84 | names and ifindex values. */ | |
d62a17ae | 85 | static void set_ifindex(struct interface *ifp, ifindex_t ifi_index, |
86 | struct zebra_ns *zns) | |
1fdc9eae | 87 | { |
d62a17ae | 88 | struct interface *oifp; |
89 | ||
90 | if (((oifp = if_lookup_by_index_per_ns(zns, ifi_index)) != NULL) | |
91 | && (oifp != ifp)) { | |
92 | if (ifi_index == IFINDEX_INTERNAL) | |
af4c2728 | 93 | flog_err( |
450971aa | 94 | EC_LIB_INTERFACE, |
4d43f68a | 95 | "Netlink is setting interface %s ifindex to reserved internal value %u", |
d62a17ae | 96 | ifp->name, ifi_index); |
97 | else { | |
98 | if (IS_ZEBRA_DEBUG_KERNEL) | |
99 | zlog_debug( | |
100 | "interface index %d was renamed from %s to %s", | |
101 | ifi_index, oifp->name, ifp->name); | |
102 | if (if_is_up(oifp)) | |
af4c2728 | 103 | flog_err( |
450971aa | 104 | EC_LIB_INTERFACE, |
4d43f68a | 105 | "interface rename detected on up interface: index %d was renamed from %s to %s, results are uncertain!", |
d62a17ae | 106 | ifi_index, oifp->name, ifp->name); |
d0438da6 | 107 | if_delete_update(&oifp); |
d62a17ae | 108 | } |
109 | } | |
ff880b78 | 110 | if_set_index(ifp, ifi_index); |
1fdc9eae | 111 | } |
112 | ||
113 | /* Utility function to parse hardware link-layer address and update ifp */ | |
d62a17ae | 114 | static void netlink_interface_update_hw_addr(struct rtattr **tb, |
115 | struct interface *ifp) | |
1fdc9eae | 116 | { |
d62a17ae | 117 | int i; |
118 | ||
119 | if (tb[IFLA_ADDRESS]) { | |
120 | int hw_addr_len; | |
121 | ||
122 | hw_addr_len = RTA_PAYLOAD(tb[IFLA_ADDRESS]); | |
123 | ||
124 | if (hw_addr_len > INTERFACE_HWADDR_MAX) | |
9df414fe QY |
125 | zlog_debug("Hardware address is too large: %d", |
126 | hw_addr_len); | |
d62a17ae | 127 | else { |
128 | ifp->hw_addr_len = hw_addr_len; | |
129 | memcpy(ifp->hw_addr, RTA_DATA(tb[IFLA_ADDRESS]), | |
130 | hw_addr_len); | |
131 | ||
132 | for (i = 0; i < hw_addr_len; i++) | |
133 | if (ifp->hw_addr[i] != 0) | |
134 | break; | |
135 | ||
136 | if (i == hw_addr_len) | |
137 | ifp->hw_addr_len = 0; | |
138 | else | |
139 | ifp->hw_addr_len = hw_addr_len; | |
140 | } | |
141 | } | |
1fdc9eae | 142 | } |
143 | ||
d62a17ae | 144 | static enum zebra_link_type netlink_to_zebra_link_type(unsigned int hwt) |
1fdc9eae | 145 | { |
d62a17ae | 146 | switch (hwt) { |
147 | case ARPHRD_ETHER: | |
148 | return ZEBRA_LLT_ETHER; | |
149 | case ARPHRD_EETHER: | |
150 | return ZEBRA_LLT_EETHER; | |
151 | case ARPHRD_AX25: | |
152 | return ZEBRA_LLT_AX25; | |
153 | case ARPHRD_PRONET: | |
154 | return ZEBRA_LLT_PRONET; | |
155 | case ARPHRD_IEEE802: | |
156 | return ZEBRA_LLT_IEEE802; | |
157 | case ARPHRD_ARCNET: | |
158 | return ZEBRA_LLT_ARCNET; | |
159 | case ARPHRD_APPLETLK: | |
160 | return ZEBRA_LLT_APPLETLK; | |
161 | case ARPHRD_DLCI: | |
162 | return ZEBRA_LLT_DLCI; | |
163 | case ARPHRD_ATM: | |
164 | return ZEBRA_LLT_ATM; | |
165 | case ARPHRD_METRICOM: | |
166 | return ZEBRA_LLT_METRICOM; | |
167 | case ARPHRD_IEEE1394: | |
168 | return ZEBRA_LLT_IEEE1394; | |
169 | case ARPHRD_EUI64: | |
170 | return ZEBRA_LLT_EUI64; | |
171 | case ARPHRD_INFINIBAND: | |
172 | return ZEBRA_LLT_INFINIBAND; | |
173 | case ARPHRD_SLIP: | |
174 | return ZEBRA_LLT_SLIP; | |
175 | case ARPHRD_CSLIP: | |
176 | return ZEBRA_LLT_CSLIP; | |
177 | case ARPHRD_SLIP6: | |
178 | return ZEBRA_LLT_SLIP6; | |
179 | case ARPHRD_CSLIP6: | |
180 | return ZEBRA_LLT_CSLIP6; | |
181 | case ARPHRD_RSRVD: | |
182 | return ZEBRA_LLT_RSRVD; | |
183 | case ARPHRD_ADAPT: | |
184 | return ZEBRA_LLT_ADAPT; | |
185 | case ARPHRD_ROSE: | |
186 | return ZEBRA_LLT_ROSE; | |
187 | case ARPHRD_X25: | |
188 | return ZEBRA_LLT_X25; | |
189 | case ARPHRD_PPP: | |
190 | return ZEBRA_LLT_PPP; | |
191 | case ARPHRD_CISCO: | |
192 | return ZEBRA_LLT_CHDLC; | |
193 | case ARPHRD_LAPB: | |
194 | return ZEBRA_LLT_LAPB; | |
195 | case ARPHRD_RAWHDLC: | |
196 | return ZEBRA_LLT_RAWHDLC; | |
197 | case ARPHRD_TUNNEL: | |
198 | return ZEBRA_LLT_IPIP; | |
199 | case ARPHRD_TUNNEL6: | |
200 | return ZEBRA_LLT_IPIP6; | |
201 | case ARPHRD_FRAD: | |
202 | return ZEBRA_LLT_FRAD; | |
203 | case ARPHRD_SKIP: | |
204 | return ZEBRA_LLT_SKIP; | |
205 | case ARPHRD_LOOPBACK: | |
206 | return ZEBRA_LLT_LOOPBACK; | |
207 | case ARPHRD_LOCALTLK: | |
208 | return ZEBRA_LLT_LOCALTLK; | |
209 | case ARPHRD_FDDI: | |
210 | return ZEBRA_LLT_FDDI; | |
211 | case ARPHRD_SIT: | |
212 | return ZEBRA_LLT_SIT; | |
213 | case ARPHRD_IPDDP: | |
214 | return ZEBRA_LLT_IPDDP; | |
215 | case ARPHRD_IPGRE: | |
216 | return ZEBRA_LLT_IPGRE; | |
217 | case ARPHRD_PIMREG: | |
218 | return ZEBRA_LLT_PIMREG; | |
219 | case ARPHRD_HIPPI: | |
220 | return ZEBRA_LLT_HIPPI; | |
221 | case ARPHRD_ECONET: | |
222 | return ZEBRA_LLT_ECONET; | |
223 | case ARPHRD_IRDA: | |
224 | return ZEBRA_LLT_IRDA; | |
225 | case ARPHRD_FCPP: | |
226 | return ZEBRA_LLT_FCPP; | |
227 | case ARPHRD_FCAL: | |
228 | return ZEBRA_LLT_FCAL; | |
229 | case ARPHRD_FCPL: | |
230 | return ZEBRA_LLT_FCPL; | |
231 | case ARPHRD_FCFABRIC: | |
232 | return ZEBRA_LLT_FCFABRIC; | |
233 | case ARPHRD_IEEE802_TR: | |
234 | return ZEBRA_LLT_IEEE802_TR; | |
235 | case ARPHRD_IEEE80211: | |
236 | return ZEBRA_LLT_IEEE80211; | |
4268e09e | 237 | #ifdef ARPHRD_IEEE802154 |
d62a17ae | 238 | case ARPHRD_IEEE802154: |
239 | return ZEBRA_LLT_IEEE802154; | |
4268e09e | 240 | #endif |
1fdc9eae | 241 | #ifdef ARPHRD_IP6GRE |
d62a17ae | 242 | case ARPHRD_IP6GRE: |
243 | return ZEBRA_LLT_IP6GRE; | |
1fdc9eae | 244 | #endif |
245 | #ifdef ARPHRD_IEEE802154_PHY | |
d62a17ae | 246 | case ARPHRD_IEEE802154_PHY: |
247 | return ZEBRA_LLT_IEEE802154_PHY; | |
1fdc9eae | 248 | #endif |
249 | ||
d62a17ae | 250 | default: |
251 | return ZEBRA_LLT_UNKNOWN; | |
252 | } | |
1fdc9eae | 253 | } |
254 | ||
42b56639 | 255 | static inline void zebra_if_set_ziftype(struct interface *ifp, |
e6f2bec0 | 256 | enum zebra_iftype zif_type, |
a81982fa | 257 | enum zebra_slave_iftype zif_slave_type) |
42b56639 AK |
258 | { |
259 | struct zebra_if *zif; | |
260 | ||
261 | zif = (struct zebra_if *)ifp->info; | |
262 | zif->zif_slave_type = zif_slave_type; | |
263 | ||
264 | if (zif->zif_type != zif_type) { | |
265 | zif->zif_type = zif_type; | |
266 | /* If the if_type has been set to bond initialize ES info | |
267 | * against it. XXX - note that we don't handle the case where | |
268 | * a zif changes from bond to non-bond; it is really | |
269 | * an unexpected/error condition. | |
270 | */ | |
271 | zebra_evpn_if_init(zif); | |
272 | } | |
273 | } | |
274 | ||
b9368db9 | 275 | static void netlink_determine_zebra_iftype(const char *kind, |
e6f2bec0 | 276 | enum zebra_iftype *zif_type) |
6675513d | 277 | { |
d62a17ae | 278 | *zif_type = ZEBRA_IF_OTHER; |
279 | ||
280 | if (!kind) | |
281 | return; | |
282 | ||
283 | if (strcmp(kind, "vrf") == 0) | |
284 | *zif_type = ZEBRA_IF_VRF; | |
285 | else if (strcmp(kind, "bridge") == 0) | |
286 | *zif_type = ZEBRA_IF_BRIDGE; | |
287 | else if (strcmp(kind, "vlan") == 0) | |
288 | *zif_type = ZEBRA_IF_VLAN; | |
289 | else if (strcmp(kind, "vxlan") == 0) | |
290 | *zif_type = ZEBRA_IF_VXLAN; | |
1a98c087 MK |
291 | else if (strcmp(kind, "macvlan") == 0) |
292 | *zif_type = ZEBRA_IF_MACVLAN; | |
0e4864ea PG |
293 | else if (strcmp(kind, "veth") == 0) |
294 | *zif_type = ZEBRA_IF_VETH; | |
b9368db9 DD |
295 | else if (strcmp(kind, "bond") == 0) |
296 | *zif_type = ZEBRA_IF_BOND; | |
297 | else if (strcmp(kind, "bond_slave") == 0) | |
298 | *zif_type = ZEBRA_IF_BOND_SLAVE; | |
077c07cc PG |
299 | else if (strcmp(kind, "gre") == 0) |
300 | *zif_type = ZEBRA_IF_GRE; | |
6675513d | 301 | } |
52d8f0d8 | 302 | |
d62a17ae | 303 | static void netlink_vrf_change(struct nlmsghdr *h, struct rtattr *tb, |
5e031198 | 304 | uint32_t ns_id, const char *name) |
1fdc9eae | 305 | { |
d62a17ae | 306 | struct ifinfomsg *ifi; |
307 | struct rtattr *linkinfo[IFLA_INFO_MAX + 1]; | |
308 | struct rtattr *attr[IFLA_VRF_MAX + 1]; | |
75d26fb3 | 309 | struct vrf *vrf = NULL; |
d62a17ae | 310 | struct zebra_vrf *zvrf; |
d7c0a89a | 311 | uint32_t nl_table_id; |
d62a17ae | 312 | |
313 | ifi = NLMSG_DATA(h); | |
314 | ||
c9d842c7 | 315 | netlink_parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, tb); |
d62a17ae | 316 | |
317 | if (!linkinfo[IFLA_INFO_DATA]) { | |
318 | if (IS_ZEBRA_DEBUG_KERNEL) | |
319 | zlog_debug( | |
320 | "%s: IFLA_INFO_DATA missing from VRF message: %s", | |
321 | __func__, name); | |
322 | return; | |
323 | } | |
324 | ||
c9d842c7 DS |
325 | netlink_parse_rtattr_nested(attr, IFLA_VRF_MAX, |
326 | linkinfo[IFLA_INFO_DATA]); | |
d62a17ae | 327 | if (!attr[IFLA_VRF_TABLE]) { |
328 | if (IS_ZEBRA_DEBUG_KERNEL) | |
329 | zlog_debug( | |
330 | "%s: IFLA_VRF_TABLE missing from VRF message: %s", | |
331 | __func__, name); | |
332 | return; | |
1fdc9eae | 333 | } |
334 | ||
d7c0a89a | 335 | nl_table_id = *(uint32_t *)RTA_DATA(attr[IFLA_VRF_TABLE]); |
d62a17ae | 336 | |
337 | if (h->nlmsg_type == RTM_NEWLINK) { | |
338 | if (IS_ZEBRA_DEBUG_KERNEL) | |
339 | zlog_debug("RTM_NEWLINK for VRF %s(%u) table %u", name, | |
340 | ifi->ifi_index, nl_table_id); | |
341 | ||
2e86d16d RW |
342 | if (!vrf_lookup_by_id((vrf_id_t)ifi->ifi_index)) { |
343 | vrf_id_t exist_id; | |
5e031198 | 344 | |
2e86d16d RW |
345 | exist_id = vrf_lookup_by_table(nl_table_id, ns_id); |
346 | if (exist_id != VRF_DEFAULT) { | |
347 | vrf = vrf_lookup_by_id(exist_id); | |
348 | ||
349 | flog_err( | |
350 | EC_ZEBRA_VRF_MISCONFIGURED, | |
351 | "VRF %s id %u table id overlaps existing vrf %s, misconfiguration exiting", | |
352 | name, ifi->ifi_index, vrf->name); | |
353 | exit(-1); | |
354 | } | |
5e031198 | 355 | } |
2e86d16d | 356 | |
75d26fb3 | 357 | vrf = vrf_update((vrf_id_t)ifi->ifi_index, name); |
d62a17ae | 358 | if (!vrf) { |
450971aa | 359 | flog_err(EC_LIB_INTERFACE, "VRF %s id %u not created", |
1c50c1c0 | 360 | name, ifi->ifi_index); |
d62a17ae | 361 | return; |
362 | } | |
363 | ||
d62a17ae | 364 | /* |
365 | * This is the only place that we get the actual kernel table_id | |
366 | * being used. We need it to set the table_id of the routes | |
367 | * we are passing to the kernel.... And to throw some totally | |
368 | * awesome parties. that too. | |
593406a1 DS |
369 | * |
370 | * At this point we *must* have a zvrf because the vrf_create | |
371 | * callback creates one. We *must* set the table id | |
372 | * before the vrf_enable because of( at the very least ) | |
373 | * static routes being delayed for installation until | |
374 | * during the vrf_enable callbacks. | |
d62a17ae | 375 | */ |
376 | zvrf = (struct zebra_vrf *)vrf->info; | |
377 | zvrf->table_id = nl_table_id; | |
593406a1 DS |
378 | |
379 | /* Enable the created VRF. */ | |
380 | if (!vrf_enable(vrf)) { | |
450971aa | 381 | flog_err(EC_LIB_INTERFACE, |
1c50c1c0 QY |
382 | "Failed to enable VRF %s id %u", name, |
383 | ifi->ifi_index); | |
593406a1 DS |
384 | return; |
385 | } | |
386 | ||
d62a17ae | 387 | } else // h->nlmsg_type == RTM_DELLINK |
388 | { | |
389 | if (IS_ZEBRA_DEBUG_KERNEL) | |
390 | zlog_debug("RTM_DELLINK for VRF %s(%u)", name, | |
391 | ifi->ifi_index); | |
392 | ||
393 | vrf = vrf_lookup_by_id((vrf_id_t)ifi->ifi_index); | |
394 | ||
395 | if (!vrf) { | |
e914ccbe | 396 | flog_warn(EC_ZEBRA_VRF_NOT_FOUND, "%s: vrf not found", |
9df414fe | 397 | __func__); |
d62a17ae | 398 | return; |
399 | } | |
400 | ||
401 | vrf_delete(vrf); | |
402 | } | |
1fdc9eae | 403 | } |
404 | ||
67188ca2 | 405 | static uint32_t get_iflink_speed(struct interface *interface, int *error) |
535fe877 | 406 | { |
d62a17ae | 407 | struct ifreq ifdata; |
408 | struct ethtool_cmd ecmd; | |
409 | int sd; | |
410 | int rc; | |
0268f30e | 411 | const char *ifname = interface->name; |
d62a17ae | 412 | |
594c2878 JF |
413 | if (error) |
414 | *error = 0; | |
d62a17ae | 415 | /* initialize struct */ |
416 | memset(&ifdata, 0, sizeof(ifdata)); | |
417 | ||
418 | /* set interface name */ | |
0af35d90 | 419 | strlcpy(ifdata.ifr_name, ifname, sizeof(ifdata.ifr_name)); |
d62a17ae | 420 | |
421 | /* initialize ethtool interface */ | |
422 | memset(&ecmd, 0, sizeof(ecmd)); | |
423 | ecmd.cmd = ETHTOOL_GSET; /* ETHTOOL_GLINK */ | |
ba85366a | 424 | ifdata.ifr_data = (caddr_t)&ecmd; |
d62a17ae | 425 | |
d2fb26ef | 426 | /* use ioctl to get speed of an interface */ |
0cf6db21 | 427 | frr_with_privs(&zserv_privs) { |
01b9e3fd | 428 | sd = vrf_socket(PF_INET, SOCK_DGRAM, IPPROTO_IP, |
096f7609 | 429 | interface->vrf->vrf_id, NULL); |
01b9e3fd DL |
430 | if (sd < 0) { |
431 | if (IS_ZEBRA_DEBUG_KERNEL) | |
432 | zlog_debug("Failure to read interface %s speed: %d %s", | |
433 | ifname, errno, safe_strerror(errno)); | |
594c2878 JF |
434 | /* no vrf socket creation may probably mean vrf issue */ |
435 | if (error) | |
436 | *error = -1; | |
01b9e3fd DL |
437 | return 0; |
438 | } | |
d2fb26ef | 439 | /* Get the current link state for the interface */ |
096f7609 | 440 | rc = vrf_ioctl(interface->vrf->vrf_id, sd, SIOCETHTOOL, |
633fc9b1 | 441 | (char *)&ifdata); |
01b9e3fd | 442 | } |
d62a17ae | 443 | if (rc < 0) { |
f767cee4 | 444 | if (errno != EOPNOTSUPP && IS_ZEBRA_DEBUG_KERNEL) |
bd7d0299 DS |
445 | zlog_debug( |
446 | "IOCTL failure to read interface %s speed: %d %s", | |
447 | ifname, errno, safe_strerror(errno)); | |
594c2878 JF |
448 | /* no device means interface unreachable */ |
449 | if (errno == ENODEV && error) | |
450 | *error = -1; | |
d62a17ae | 451 | ecmd.speed_hi = 0; |
452 | ecmd.speed = 0; | |
453 | } | |
454 | ||
455 | close(sd); | |
456 | ||
67188ca2 | 457 | return ((uint32_t)ecmd.speed_hi << 16) | ecmd.speed; |
535fe877 DS |
458 | } |
459 | ||
594c2878 | 460 | uint32_t kernel_get_speed(struct interface *ifp, int *error) |
dc7b3cae | 461 | { |
594c2878 | 462 | return get_iflink_speed(ifp, error); |
dc7b3cae DS |
463 | } |
464 | ||
62b4b7e4 PG |
465 | static ssize_t |
466 | netlink_gre_set_msg_encoder(struct zebra_dplane_ctx *ctx, void *buf, | |
467 | size_t buflen) | |
468 | { | |
469 | struct { | |
470 | struct nlmsghdr n; | |
471 | struct ifinfomsg ifi; | |
472 | char buf[]; | |
473 | } *req = buf; | |
474 | uint32_t link_idx; | |
db51f0cd | 475 | unsigned int mtu; |
62b4b7e4 | 476 | struct rtattr *rta_info, *rta_data; |
e3d3fa06 | 477 | const struct zebra_l2info_gre *gre_info; |
62b4b7e4 PG |
478 | |
479 | if (buflen < sizeof(*req)) | |
480 | return 0; | |
481 | memset(req, 0, sizeof(*req)); | |
482 | ||
483 | req->n.nlmsg_type = RTM_NEWLINK; | |
484 | req->n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
485 | req->n.nlmsg_flags = NLM_F_REQUEST; | |
486 | ||
487 | req->ifi.ifi_index = dplane_ctx_get_ifindex(ctx); | |
e3d3fa06 PG |
488 | |
489 | gre_info = dplane_ctx_gre_get_info(ctx); | |
490 | if (!gre_info) | |
491 | return 0; | |
492 | ||
62b4b7e4 PG |
493 | req->ifi.ifi_change = 0xFFFFFFFF; |
494 | link_idx = dplane_ctx_gre_get_link_ifindex(ctx); | |
db51f0cd PG |
495 | mtu = dplane_ctx_gre_get_mtu(ctx); |
496 | ||
497 | if (mtu && !nl_attr_put32(&req->n, buflen, IFLA_MTU, mtu)) | |
498 | return 0; | |
62b4b7e4 PG |
499 | |
500 | rta_info = nl_attr_nest(&req->n, buflen, IFLA_LINKINFO); | |
501 | if (!rta_info) | |
502 | return 0; | |
e3d3fa06 | 503 | |
62b4b7e4 PG |
504 | if (!nl_attr_put(&req->n, buflen, IFLA_INFO_KIND, "gre", 3)) |
505 | return 0; | |
e3d3fa06 | 506 | |
62b4b7e4 | 507 | rta_data = nl_attr_nest(&req->n, buflen, IFLA_INFO_DATA); |
e3d3fa06 | 508 | if (!rta_data) |
62b4b7e4 | 509 | return 0; |
e3d3fa06 | 510 | |
62b4b7e4 PG |
511 | if (!nl_attr_put32(&req->n, buflen, IFLA_GRE_LINK, link_idx)) |
512 | return 0; | |
e3d3fa06 PG |
513 | |
514 | if (gre_info->vtep_ip.s_addr && | |
515 | !nl_attr_put32(&req->n, buflen, IFLA_GRE_LOCAL, | |
516 | gre_info->vtep_ip.s_addr)) | |
517 | return 0; | |
518 | ||
519 | if (gre_info->vtep_ip_remote.s_addr && | |
520 | !nl_attr_put32(&req->n, buflen, IFLA_GRE_REMOTE, | |
521 | gre_info->vtep_ip_remote.s_addr)) | |
522 | return 0; | |
523 | ||
524 | if (gre_info->ikey && | |
525 | !nl_attr_put32(&req->n, buflen, IFLA_GRE_IKEY, | |
526 | gre_info->ikey)) | |
527 | return 0; | |
528 | if (gre_info->okey && | |
529 | !nl_attr_put32(&req->n, buflen, IFLA_GRE_IKEY, | |
530 | gre_info->okey)) | |
531 | return 0; | |
532 | ||
62b4b7e4 PG |
533 | nl_attr_nest_end(&req->n, rta_data); |
534 | nl_attr_nest_end(&req->n, rta_info); | |
535 | ||
536 | return NLMSG_ALIGN(req->n.nlmsg_len); | |
537 | } | |
538 | ||
d62a17ae | 539 | static int netlink_extract_bridge_info(struct rtattr *link_data, |
540 | struct zebra_l2info_bridge *bridge_info) | |
6675513d | 541 | { |
d62a17ae | 542 | struct rtattr *attr[IFLA_BR_MAX + 1]; |
543 | ||
544 | memset(bridge_info, 0, sizeof(*bridge_info)); | |
c9d842c7 | 545 | netlink_parse_rtattr_nested(attr, IFLA_BR_MAX, link_data); |
d62a17ae | 546 | if (attr[IFLA_BR_VLAN_FILTERING]) |
547 | bridge_info->vlan_aware = | |
d7c0a89a | 548 | *(uint8_t *)RTA_DATA(attr[IFLA_BR_VLAN_FILTERING]); |
d62a17ae | 549 | return 0; |
6675513d | 550 | } |
551 | ||
d62a17ae | 552 | static int netlink_extract_vlan_info(struct rtattr *link_data, |
553 | struct zebra_l2info_vlan *vlan_info) | |
6675513d | 554 | { |
d62a17ae | 555 | struct rtattr *attr[IFLA_VLAN_MAX + 1]; |
556 | vlanid_t vid_in_msg; | |
557 | ||
558 | memset(vlan_info, 0, sizeof(*vlan_info)); | |
c9d842c7 | 559 | netlink_parse_rtattr_nested(attr, IFLA_VLAN_MAX, link_data); |
d62a17ae | 560 | if (!attr[IFLA_VLAN_ID]) { |
561 | if (IS_ZEBRA_DEBUG_KERNEL) | |
562 | zlog_debug("IFLA_VLAN_ID missing from VLAN IF message"); | |
563 | return -1; | |
564 | } | |
565 | ||
566 | vid_in_msg = *(vlanid_t *)RTA_DATA(attr[IFLA_VLAN_ID]); | |
567 | vlan_info->vid = vid_in_msg; | |
568 | return 0; | |
6675513d | 569 | } |
570 | ||
077c07cc PG |
571 | static int netlink_extract_gre_info(struct rtattr *link_data, |
572 | struct zebra_l2info_gre *gre_info) | |
573 | { | |
574 | struct rtattr *attr[IFLA_GRE_MAX + 1]; | |
575 | ||
576 | memset(gre_info, 0, sizeof(*gre_info)); | |
577 | memset(attr, 0, sizeof(attr)); | |
269b69d7 | 578 | netlink_parse_rtattr_nested(attr, IFLA_GRE_MAX, link_data); |
077c07cc PG |
579 | |
580 | if (!attr[IFLA_GRE_LOCAL]) { | |
581 | if (IS_ZEBRA_DEBUG_KERNEL) | |
582 | zlog_debug( | |
583 | "IFLA_GRE_LOCAL missing from GRE IF message"); | |
584 | } else | |
585 | gre_info->vtep_ip = | |
586 | *(struct in_addr *)RTA_DATA(attr[IFLA_GRE_LOCAL]); | |
587 | if (!attr[IFLA_GRE_REMOTE]) { | |
588 | if (IS_ZEBRA_DEBUG_KERNEL) | |
589 | zlog_debug( | |
590 | "IFLA_GRE_REMOTE missing from GRE IF message"); | |
591 | } else | |
592 | gre_info->vtep_ip_remote = | |
593 | *(struct in_addr *)RTA_DATA(attr[IFLA_GRE_REMOTE]); | |
594 | ||
595 | if (!attr[IFLA_GRE_LINK]) { | |
596 | if (IS_ZEBRA_DEBUG_KERNEL) | |
597 | zlog_debug("IFLA_GRE_LINK missing from GRE IF message"); | |
62b4b7e4 | 598 | } else { |
077c07cc PG |
599 | gre_info->ifindex_link = |
600 | *(ifindex_t *)RTA_DATA(attr[IFLA_GRE_LINK]); | |
62b4b7e4 PG |
601 | if (IS_ZEBRA_DEBUG_KERNEL) |
602 | zlog_debug("IFLA_GRE_LINK obtained is %u", | |
603 | gre_info->ifindex_link); | |
604 | } | |
077c07cc PG |
605 | if (attr[IFLA_GRE_IKEY]) |
606 | gre_info->ikey = *(uint32_t *)RTA_DATA(attr[IFLA_GRE_IKEY]); | |
607 | if (attr[IFLA_GRE_OKEY]) | |
608 | gre_info->okey = *(uint32_t *)RTA_DATA(attr[IFLA_GRE_OKEY]); | |
609 | return 0; | |
610 | } | |
611 | ||
d62a17ae | 612 | static int netlink_extract_vxlan_info(struct rtattr *link_data, |
613 | struct zebra_l2info_vxlan *vxl_info) | |
6675513d | 614 | { |
d62a17ae | 615 | struct rtattr *attr[IFLA_VXLAN_MAX + 1]; |
616 | vni_t vni_in_msg; | |
617 | struct in_addr vtep_ip_in_msg; | |
14ddb3d9 | 618 | ifindex_t ifindex_link; |
d62a17ae | 619 | |
620 | memset(vxl_info, 0, sizeof(*vxl_info)); | |
c9d842c7 | 621 | netlink_parse_rtattr_nested(attr, IFLA_VXLAN_MAX, link_data); |
d62a17ae | 622 | if (!attr[IFLA_VXLAN_ID]) { |
623 | if (IS_ZEBRA_DEBUG_KERNEL) | |
624 | zlog_debug( | |
625 | "IFLA_VXLAN_ID missing from VXLAN IF message"); | |
626 | return -1; | |
627 | } | |
628 | ||
629 | vni_in_msg = *(vni_t *)RTA_DATA(attr[IFLA_VXLAN_ID]); | |
630 | vxl_info->vni = vni_in_msg; | |
631 | if (!attr[IFLA_VXLAN_LOCAL]) { | |
632 | if (IS_ZEBRA_DEBUG_KERNEL) | |
633 | zlog_debug( | |
634 | "IFLA_VXLAN_LOCAL missing from VXLAN IF message"); | |
635 | } else { | |
636 | vtep_ip_in_msg = | |
637 | *(struct in_addr *)RTA_DATA(attr[IFLA_VXLAN_LOCAL]); | |
638 | vxl_info->vtep_ip = vtep_ip_in_msg; | |
639 | } | |
640 | ||
d7fe235c AK |
641 | if (attr[IFLA_VXLAN_GROUP]) { |
642 | vxl_info->mcast_grp = | |
643 | *(struct in_addr *)RTA_DATA(attr[IFLA_VXLAN_GROUP]); | |
644 | } | |
645 | ||
14ddb3d9 PG |
646 | if (!attr[IFLA_VXLAN_LINK]) { |
647 | if (IS_ZEBRA_DEBUG_KERNEL) | |
3efd0893 | 648 | zlog_debug("IFLA_VXLAN_LINK missing from VXLAN IF message"); |
14ddb3d9 PG |
649 | } else { |
650 | ifindex_link = | |
651 | *(ifindex_t *)RTA_DATA(attr[IFLA_VXLAN_LINK]); | |
652 | vxl_info->ifindex_link = ifindex_link; | |
653 | } | |
d62a17ae | 654 | return 0; |
6675513d | 655 | } |
656 | ||
657 | /* | |
658 | * Extract and save L2 params (of interest) for an interface. When a | |
659 | * bridge interface is added or updated, take further actions to map | |
660 | * its members. Likewise, for VxLAN interface. | |
661 | */ | |
d62a17ae | 662 | static void netlink_interface_update_l2info(struct interface *ifp, |
14ddb3d9 PG |
663 | struct rtattr *link_data, int add, |
664 | ns_id_t link_nsid) | |
6675513d | 665 | { |
d62a17ae | 666 | if (!link_data) |
667 | return; | |
668 | ||
669 | if (IS_ZEBRA_IF_BRIDGE(ifp)) { | |
670 | struct zebra_l2info_bridge bridge_info; | |
671 | ||
672 | netlink_extract_bridge_info(link_data, &bridge_info); | |
673 | zebra_l2_bridge_add_update(ifp, &bridge_info, add); | |
674 | } else if (IS_ZEBRA_IF_VLAN(ifp)) { | |
675 | struct zebra_l2info_vlan vlan_info; | |
676 | ||
677 | netlink_extract_vlan_info(link_data, &vlan_info); | |
678 | zebra_l2_vlanif_update(ifp, &vlan_info); | |
243b74ed AK |
679 | zebra_evpn_acc_bd_svi_set(ifp->info, NULL, |
680 | !!if_is_operative(ifp)); | |
d62a17ae | 681 | } else if (IS_ZEBRA_IF_VXLAN(ifp)) { |
682 | struct zebra_l2info_vxlan vxlan_info; | |
683 | ||
684 | netlink_extract_vxlan_info(link_data, &vxlan_info); | |
14ddb3d9 | 685 | vxlan_info.link_nsid = link_nsid; |
d62a17ae | 686 | zebra_l2_vxlanif_add_update(ifp, &vxlan_info, add); |
14ddb3d9 PG |
687 | if (link_nsid != NS_UNKNOWN && |
688 | vxlan_info.ifindex_link) | |
689 | zebra_if_update_link(ifp, vxlan_info.ifindex_link, | |
690 | link_nsid); | |
077c07cc PG |
691 | } else if (IS_ZEBRA_IF_GRE(ifp)) { |
692 | struct zebra_l2info_gre gre_info; | |
693 | ||
694 | netlink_extract_gre_info(link_data, &gre_info); | |
695 | gre_info.link_nsid = link_nsid; | |
696 | zebra_l2_greif_add_update(ifp, &gre_info, add); | |
697 | if (link_nsid != NS_UNKNOWN && | |
698 | gre_info.ifindex_link) | |
699 | zebra_if_update_link(ifp, gre_info.ifindex_link, | |
700 | link_nsid); | |
d62a17ae | 701 | } |
6675513d | 702 | } |
703 | ||
42b56639 AK |
704 | static int netlink_bridge_vxlan_update(struct interface *ifp, |
705 | struct rtattr *af_spec) | |
706 | { | |
707 | struct rtattr *aftb[IFLA_BRIDGE_MAX + 1]; | |
708 | struct bridge_vlan_info *vinfo; | |
709 | vlanid_t access_vlan; | |
710 | ||
ec897751 | 711 | if (!af_spec) |
712 | return 0; | |
713 | ||
42b56639 AK |
714 | /* There is a 1-to-1 mapping of VLAN to VxLAN - hence |
715 | * only 1 access VLAN is accepted. | |
716 | */ | |
c9d842c7 | 717 | netlink_parse_rtattr_nested(aftb, IFLA_BRIDGE_MAX, af_spec); |
42b56639 AK |
718 | if (!aftb[IFLA_BRIDGE_VLAN_INFO]) |
719 | return 0; | |
720 | ||
721 | vinfo = RTA_DATA(aftb[IFLA_BRIDGE_VLAN_INFO]); | |
722 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_PVID)) | |
723 | return 0; | |
724 | ||
725 | access_vlan = (vlanid_t)vinfo->vid; | |
726 | if (IS_ZEBRA_DEBUG_KERNEL) | |
727 | zlog_debug("Access VLAN %u for VxLAN IF %s(%u)", access_vlan, | |
728 | ifp->name, ifp->ifindex); | |
729 | zebra_l2_vxlanif_update_access_vlan(ifp, access_vlan); | |
730 | return 0; | |
731 | } | |
732 | ||
733 | static void netlink_bridge_vlan_update(struct interface *ifp, | |
734 | struct rtattr *af_spec) | |
735 | { | |
736 | struct rtattr *i; | |
737 | int rem; | |
738 | uint16_t vid_range_start = 0; | |
739 | struct zebra_if *zif; | |
740 | bitfield_t old_vlan_bitmap; | |
741 | struct bridge_vlan_info *vinfo; | |
742 | ||
743 | zif = (struct zebra_if *)ifp->info; | |
744 | ||
745 | /* cache the old bitmap addrs */ | |
746 | old_vlan_bitmap = zif->vlan_bitmap; | |
747 | /* create a new bitmap space for re-eval */ | |
748 | bf_init(zif->vlan_bitmap, IF_VLAN_BITMAP_MAX); | |
749 | ||
ec897751 | 750 | if (af_spec) { |
751 | for (i = RTA_DATA(af_spec), rem = RTA_PAYLOAD(af_spec); | |
752 | RTA_OK(i, rem); i = RTA_NEXT(i, rem)) { | |
42b56639 | 753 | |
ec897751 | 754 | if (i->rta_type != IFLA_BRIDGE_VLAN_INFO) |
755 | continue; | |
42b56639 | 756 | |
ec897751 | 757 | vinfo = RTA_DATA(i); |
42b56639 | 758 | |
ec897751 | 759 | if (vinfo->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) { |
760 | vid_range_start = vinfo->vid; | |
761 | continue; | |
762 | } | |
42b56639 | 763 | |
ec897751 | 764 | if (!(vinfo->flags & BRIDGE_VLAN_INFO_RANGE_END)) |
765 | vid_range_start = vinfo->vid; | |
42b56639 | 766 | |
ec897751 | 767 | zebra_vlan_bitmap_compute(ifp, vid_range_start, |
768 | vinfo->vid); | |
769 | } | |
42b56639 AK |
770 | } |
771 | ||
772 | zebra_vlan_mbr_re_eval(ifp, old_vlan_bitmap); | |
773 | ||
774 | bf_free(old_vlan_bitmap); | |
775 | } | |
776 | ||
d62a17ae | 777 | static int netlink_bridge_interface(struct nlmsghdr *h, int len, ns_id_t ns_id, |
778 | int startup) | |
6675513d | 779 | { |
d62a17ae | 780 | char *name = NULL; |
781 | struct ifinfomsg *ifi; | |
782 | struct rtattr *tb[IFLA_MAX + 1]; | |
783 | struct interface *ifp; | |
42b56639 AK |
784 | struct zebra_if *zif; |
785 | struct rtattr *af_spec; | |
d62a17ae | 786 | |
787 | /* Fetch name and ifindex */ | |
788 | ifi = NLMSG_DATA(h); | |
d62a17ae | 789 | netlink_parse_rtattr(tb, IFLA_MAX, IFLA_RTA(ifi), len); |
790 | ||
791 | if (tb[IFLA_IFNAME] == NULL) | |
792 | return -1; | |
793 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
794 | ||
795 | /* The interface should already be known, if not discard. */ | |
796 | ifp = if_lookup_by_index_per_ns(zebra_ns_lookup(ns_id), ifi->ifi_index); | |
797 | if (!ifp) { | |
9df414fe QY |
798 | zlog_debug("Cannot find bridge IF %s(%u)", name, |
799 | ifi->ifi_index); | |
d62a17ae | 800 | return 0; |
801 | } | |
d62a17ae | 802 | |
803 | /* We are only interested in the access VLAN i.e., AF_SPEC */ | |
42b56639 | 804 | af_spec = tb[IFLA_AF_SPEC]; |
d62a17ae | 805 | |
42b56639 AK |
806 | if (IS_ZEBRA_IF_VXLAN(ifp)) |
807 | return netlink_bridge_vxlan_update(ifp, af_spec); | |
d62a17ae | 808 | |
42b56639 AK |
809 | /* build vlan bitmap associated with this interface if that |
810 | * device type is interested in the vlans | |
811 | */ | |
812 | zif = (struct zebra_if *)ifp->info; | |
813 | if (bf_is_inited(zif->vlan_bitmap)) | |
814 | netlink_bridge_vlan_update(ifp, af_spec); | |
d62a17ae | 815 | |
d62a17ae | 816 | return 0; |
6675513d | 817 | } |
818 | ||
ed7a1622 | 819 | static bool is_if_protodown_reason_only_frr(uint32_t rc_bitfield) |
0dcd8506 SW |
820 | { |
821 | /* This shouldn't be possible */ | |
822 | assert(frr_protodown_r_bit < 32); | |
823 | return (rc_bitfield == (((uint32_t)1) << frr_protodown_r_bit)); | |
824 | } | |
825 | ||
826 | /* | |
827 | * Process interface protodown dplane update. | |
828 | * | |
829 | * If the interface is an es bond member then it must follow EVPN's | |
830 | * protodown setting. | |
c36e442c AK |
831 | */ |
832 | static void netlink_proc_dplane_if_protodown(struct zebra_if *zif, | |
0dcd8506 | 833 | struct rtattr **tb) |
c36e442c | 834 | { |
0dcd8506 SW |
835 | bool protodown; |
836 | bool old_protodown; | |
837 | uint32_t rc_bitfield = 0; | |
838 | struct rtattr *pd_reason_info[IFLA_MAX + 1]; | |
c36e442c | 839 | |
0dcd8506 SW |
840 | protodown = !!*(uint8_t *)RTA_DATA(tb[IFLA_PROTO_DOWN]); |
841 | ||
842 | if (tb[IFLA_PROTO_DOWN_REASON]) { | |
843 | netlink_parse_rtattr_nested(pd_reason_info, IFLA_INFO_MAX, | |
844 | tb[IFLA_PROTO_DOWN_REASON]); | |
c36e442c | 845 | |
0dcd8506 SW |
846 | if (pd_reason_info[IFLA_PROTO_DOWN_REASON_VALUE]) |
847 | rc_bitfield = *(uint32_t *)RTA_DATA( | |
848 | pd_reason_info[IFLA_PROTO_DOWN_REASON_VALUE]); | |
849 | } | |
850 | ||
851 | /* | |
852 | * Set our reason code to note it wasn't us. | |
853 | * If the reason we got from the kernel is ONLY frr though, don't | |
854 | * set it. | |
855 | */ | |
7140b00c SW |
856 | COND_FLAG(zif->protodown_rc, ZEBRA_PROTODOWN_EXTERNAL, |
857 | protodown && rc_bitfield && | |
858 | !is_if_protodown_reason_only_frr(rc_bitfield)); | |
859 | ||
5d414138 | 860 | |
d89b3008 | 861 | old_protodown = !!ZEBRA_IF_IS_PROTODOWN(zif); |
0dcd8506 | 862 | if (protodown == old_protodown) |
c36e442c AK |
863 | return; |
864 | ||
865 | if (IS_ZEBRA_DEBUG_EVPN_MH_ES || IS_ZEBRA_DEBUG_KERNEL) | |
866 | zlog_debug("interface %s dplane change, protdown %s", | |
867 | zif->ifp->name, protodown ? "on" : "off"); | |
868 | ||
7140b00c SW |
869 | /* Set protodown, respectively */ |
870 | COND_FLAG(zif->flags, ZIF_FLAG_PROTODOWN, protodown); | |
0dcd8506 | 871 | |
c36e442c | 872 | if (zebra_evpn_is_es_bond_member(zif->ifp)) { |
4b82b954 | 873 | /* Check it's not already being sent to the dplane first */ |
47c1d76a SW |
874 | if (protodown && |
875 | CHECK_FLAG(zif->flags, ZIF_FLAG_SET_PROTODOWN)) { | |
876 | if (IS_ZEBRA_DEBUG_EVPN_MH_ES || IS_ZEBRA_DEBUG_KERNEL) | |
877 | zlog_debug( | |
878 | "bond mbr %s protodown on recv'd but already sent protodown on to the dplane", | |
879 | zif->ifp->name); | |
4b82b954 | 880 | return; |
47c1d76a | 881 | } |
4b82b954 | 882 | |
47c1d76a SW |
883 | if (!protodown && |
884 | CHECK_FLAG(zif->flags, ZIF_FLAG_UNSET_PROTODOWN)) { | |
885 | if (IS_ZEBRA_DEBUG_EVPN_MH_ES || IS_ZEBRA_DEBUG_KERNEL) | |
886 | zlog_debug( | |
887 | "bond mbr %s protodown off recv'd but already sent protodown off to the dplane", | |
888 | zif->ifp->name); | |
4b82b954 | 889 | return; |
47c1d76a | 890 | } |
4b82b954 | 891 | |
c36e442c AK |
892 | if (IS_ZEBRA_DEBUG_EVPN_MH_ES || IS_ZEBRA_DEBUG_KERNEL) |
893 | zlog_debug( | |
47c1d76a | 894 | "bond mbr %s reinstate protodown %s in the dplane", |
0dcd8506 SW |
895 | zif->ifp->name, old_protodown ? "on" : "off"); |
896 | ||
897 | if (old_protodown) | |
7140b00c | 898 | SET_FLAG(zif->flags, ZIF_FLAG_SET_PROTODOWN); |
c36e442c | 899 | else |
7140b00c | 900 | SET_FLAG(zif->flags, ZIF_FLAG_UNSET_PROTODOWN); |
0dcd8506 SW |
901 | |
902 | dplane_intf_update(zif->ifp); | |
c36e442c AK |
903 | } |
904 | } | |
905 | ||
00a7710c AK |
906 | static uint8_t netlink_parse_lacp_bypass(struct rtattr **linkinfo) |
907 | { | |
908 | uint8_t bypass = 0; | |
909 | struct rtattr *mbrinfo[IFLA_BOND_SLAVE_MAX + 1]; | |
910 | ||
c9d842c7 DS |
911 | netlink_parse_rtattr_nested(mbrinfo, IFLA_BOND_SLAVE_MAX, |
912 | linkinfo[IFLA_INFO_SLAVE_DATA]); | |
00a7710c AK |
913 | if (mbrinfo[IFLA_BOND_SLAVE_AD_RX_BYPASS]) |
914 | bypass = *(uint8_t *)RTA_DATA( | |
915 | mbrinfo[IFLA_BOND_SLAVE_AD_RX_BYPASS]); | |
916 | ||
917 | return bypass; | |
918 | } | |
919 | ||
0dcd8506 | 920 | /* |
ab465d24 SW |
921 | * Only called at startup to cleanup leftover protodown reasons we may |
922 | * have not cleaned up. We leave protodown set though. | |
0dcd8506 SW |
923 | */ |
924 | static void if_sweep_protodown(struct zebra_if *zif) | |
925 | { | |
926 | bool protodown; | |
927 | ||
d89b3008 | 928 | protodown = !!ZEBRA_IF_IS_PROTODOWN(zif); |
0dcd8506 SW |
929 | |
930 | if (!protodown) | |
931 | return; | |
932 | ||
933 | if (IS_ZEBRA_DEBUG_KERNEL) | |
ab465d24 SW |
934 | zlog_debug("interface %s sweeping protodown %s reason 0x%x", |
935 | zif->ifp->name, protodown ? "on" : "off", | |
936 | zif->protodown_rc); | |
0dcd8506 SW |
937 | |
938 | /* Only clear our reason codes, leave external if it was set */ | |
7140b00c | 939 | UNSET_FLAG(zif->protodown_rc, ZEBRA_PROTODOWN_ALL); |
0dcd8506 SW |
940 | dplane_intf_update(zif->ifp); |
941 | } | |
942 | ||
2414abd3 DS |
943 | /* |
944 | * Called from interface_lookup_netlink(). This function is only used | |
945 | * during bootstrap. | |
946 | */ | |
947 | static int netlink_interface(struct nlmsghdr *h, ns_id_t ns_id, int startup) | |
1fdc9eae | 948 | { |
d62a17ae | 949 | int len; |
950 | struct ifinfomsg *ifi; | |
951 | struct rtattr *tb[IFLA_MAX + 1]; | |
952 | struct rtattr *linkinfo[IFLA_MAX + 1]; | |
953 | struct interface *ifp; | |
954 | char *name = NULL; | |
955 | char *kind = NULL; | |
48884c6b | 956 | char *desc = NULL; |
d62a17ae | 957 | char *slave_kind = NULL; |
ea7ec261 | 958 | struct zebra_ns *zns = NULL; |
d62a17ae | 959 | vrf_id_t vrf_id = VRF_DEFAULT; |
e6f2bec0 | 960 | enum zebra_iftype zif_type = ZEBRA_IF_OTHER; |
a81982fa | 961 | enum zebra_slave_iftype zif_slave_type = ZEBRA_IF_SLAVE_NONE; |
d62a17ae | 962 | ifindex_t bridge_ifindex = IFINDEX_INTERNAL; |
963 | ifindex_t link_ifindex = IFINDEX_INTERNAL; | |
b9368db9 | 964 | ifindex_t bond_ifindex = IFINDEX_INTERNAL; |
520ebf72 | 965 | struct zebra_if *zif; |
14ddb3d9 | 966 | ns_id_t link_nsid = ns_id; |
00a7710c | 967 | uint8_t bypass = 0; |
d62a17ae | 968 | |
d42e6142 DS |
969 | frrtrace(3, frr_zebra, netlink_interface, h, ns_id, startup); |
970 | ||
d62a17ae | 971 | zns = zebra_ns_lookup(ns_id); |
972 | ifi = NLMSG_DATA(h); | |
973 | ||
974 | if (h->nlmsg_type != RTM_NEWLINK) | |
975 | return 0; | |
976 | ||
977 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
9bdf8618 | 978 | if (len < 0) { |
15569c58 DA |
979 | zlog_err( |
980 | "%s: Message received from netlink is of a broken size: %d %zu", | |
981 | __func__, h->nlmsg_len, | |
982 | (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg))); | |
d62a17ae | 983 | return -1; |
9bdf8618 | 984 | } |
d62a17ae | 985 | |
986 | /* We are interested in some AF_BRIDGE notifications. */ | |
987 | if (ifi->ifi_family == AF_BRIDGE) | |
988 | return netlink_bridge_interface(h, len, ns_id, startup); | |
989 | ||
990 | /* Looking up interface name. */ | |
0d6f7fd6 | 991 | memset(linkinfo, 0, sizeof(linkinfo)); |
0dcd8506 SW |
992 | netlink_parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(ifi), len, |
993 | NLA_F_NESTED); | |
1fdc9eae | 994 | |
d62a17ae | 995 | /* check for wireless messages to ignore */ |
996 | if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0)) { | |
997 | if (IS_ZEBRA_DEBUG_KERNEL) | |
998 | zlog_debug("%s: ignoring IFLA_WIRELESS message", | |
999 | __func__); | |
1000 | return 0; | |
1001 | } | |
1fdc9eae | 1002 | |
d62a17ae | 1003 | if (tb[IFLA_IFNAME] == NULL) |
1004 | return -1; | |
1005 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
1fdc9eae | 1006 | |
48884c6b DS |
1007 | if (tb[IFLA_IFALIAS]) |
1008 | desc = (char *)RTA_DATA(tb[IFLA_IFALIAS]); | |
1009 | ||
d62a17ae | 1010 | if (tb[IFLA_LINKINFO]) { |
c9d842c7 DS |
1011 | netlink_parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, |
1012 | tb[IFLA_LINKINFO]); | |
1fdc9eae | 1013 | |
d62a17ae | 1014 | if (linkinfo[IFLA_INFO_KIND]) |
1015 | kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]); | |
1fdc9eae | 1016 | |
d62a17ae | 1017 | if (linkinfo[IFLA_INFO_SLAVE_KIND]) |
1018 | slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]); | |
1fdc9eae | 1019 | |
b9368db9 DD |
1020 | if ((slave_kind != NULL) && strcmp(slave_kind, "bond") == 0) |
1021 | netlink_determine_zebra_iftype("bond_slave", &zif_type); | |
1022 | else | |
1023 | netlink_determine_zebra_iftype(kind, &zif_type); | |
d62a17ae | 1024 | } |
1025 | ||
1026 | /* If VRF, create the VRF structure itself. */ | |
78dd30b2 | 1027 | if (zif_type == ZEBRA_IF_VRF && !vrf_is_backend_netns()) { |
5e031198 | 1028 | netlink_vrf_change(h, tb[IFLA_LINKINFO], ns_id, name); |
d62a17ae | 1029 | vrf_id = (vrf_id_t)ifi->ifi_index; |
1030 | } | |
1031 | ||
1032 | if (tb[IFLA_MASTER]) { | |
78dd30b2 PG |
1033 | if (slave_kind && (strcmp(slave_kind, "vrf") == 0) |
1034 | && !vrf_is_backend_netns()) { | |
d62a17ae | 1035 | zif_slave_type = ZEBRA_IF_SLAVE_VRF; |
d7c0a89a | 1036 | vrf_id = *(uint32_t *)RTA_DATA(tb[IFLA_MASTER]); |
d62a17ae | 1037 | } else if (slave_kind && (strcmp(slave_kind, "bridge") == 0)) { |
1038 | zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE; | |
1039 | bridge_ifindex = | |
1040 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
b9368db9 DD |
1041 | } else if (slave_kind && (strcmp(slave_kind, "bond") == 0)) { |
1042 | zif_slave_type = ZEBRA_IF_SLAVE_BOND; | |
1043 | bond_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); | |
00a7710c | 1044 | bypass = netlink_parse_lacp_bypass(linkinfo); |
d62a17ae | 1045 | } else |
1046 | zif_slave_type = ZEBRA_IF_SLAVE_OTHER; | |
1047 | } | |
78dd30b2 PG |
1048 | if (vrf_is_backend_netns()) |
1049 | vrf_id = (vrf_id_t)ns_id; | |
a36898e7 | 1050 | |
d62a17ae | 1051 | /* If linking to another interface, note it. */ |
1052 | if (tb[IFLA_LINK]) | |
1053 | link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]); | |
1054 | ||
b1cc23b2 | 1055 | if (tb[IFLA_LINK_NETNSID]) { |
14ddb3d9 | 1056 | link_nsid = *(ns_id_t *)RTA_DATA(tb[IFLA_LINK_NETNSID]); |
b1cc23b2 PG |
1057 | link_nsid = ns_id_get_absolute(ns_id, link_nsid); |
1058 | } | |
14ddb3d9 | 1059 | |
f60a1188 | 1060 | ifp = if_get_by_name(name, vrf_id, NULL); |
ea7ec261 | 1061 | set_ifindex(ifp, ifi->ifi_index, zns); /* add it to ns struct */ |
d5c65bf1 | 1062 | |
d62a17ae | 1063 | ifp->flags = ifi->ifi_flags & 0x0000fffff; |
d62a17ae | 1064 | ifp->mtu6 = ifp->mtu = *(uint32_t *)RTA_DATA(tb[IFLA_MTU]); |
1065 | ifp->metric = 0; | |
594c2878 | 1066 | ifp->speed = get_iflink_speed(ifp, NULL); |
d62a17ae | 1067 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; |
1068 | ||
1069 | /* Set zebra interface type */ | |
1070 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); | |
b0fa6f6a CS |
1071 | if (IS_ZEBRA_IF_VRF(ifp)) |
1072 | SET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK); | |
d62a17ae | 1073 | |
98efddf1 DS |
1074 | /* |
1075 | * Just set the @link/lower-device ifindex. During nldump interfaces are | |
520ebf72 AK |
1076 | * not ordered in any fashion so we may end up getting upper devices |
1077 | * before lower devices. We will setup the real linkage once the dump | |
98efddf1 DS |
1078 | * is complete. |
1079 | */ | |
520ebf72 AK |
1080 | zif = (struct zebra_if *)ifp->info; |
1081 | zif->link_ifindex = link_ifindex; | |
d62a17ae | 1082 | |
ba5165ec DS |
1083 | if (desc) { |
1084 | XFREE(MTYPE_TMP, zif->desc); | |
1085 | zif->desc = XSTRDUP(MTYPE_TMP, desc); | |
1086 | } | |
1087 | ||
d62a17ae | 1088 | /* Hardware type and address. */ |
1089 | ifp->ll_type = netlink_to_zebra_link_type(ifi->ifi_type); | |
ebb61fca | 1090 | |
d62a17ae | 1091 | netlink_interface_update_hw_addr(tb, ifp); |
1092 | ||
1093 | if_add_update(ifp); | |
1094 | ||
1095 | /* Extract and save L2 interface information, take additional actions. | |
1096 | */ | |
14ddb3d9 PG |
1097 | netlink_interface_update_l2info(ifp, linkinfo[IFLA_INFO_DATA], |
1098 | 1, link_nsid); | |
c36e442c AK |
1099 | if (IS_ZEBRA_IF_BOND(ifp)) |
1100 | zebra_l2if_update_bond(ifp, true); | |
d62a17ae | 1101 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp)) |
c7620108 PG |
1102 | zebra_l2if_update_bridge_slave(ifp, bridge_ifindex, ns_id, |
1103 | ZEBRA_BRIDGE_NO_ACTION); | |
b9368db9 | 1104 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp)) |
00a7710c | 1105 | zebra_l2if_update_bond_slave(ifp, bond_ifindex, !!bypass); |
d62a17ae | 1106 | |
c36e442c | 1107 | if (tb[IFLA_PROTO_DOWN]) { |
0dcd8506 SW |
1108 | netlink_proc_dplane_if_protodown(zif, tb); |
1109 | if_sweep_protodown(zif); | |
c36e442c AK |
1110 | } |
1111 | ||
d62a17ae | 1112 | return 0; |
1fdc9eae | 1113 | } |
1114 | ||
289602d7 | 1115 | /* Request for specific interface or address information from the kernel */ |
85a75f1e MS |
1116 | static int netlink_request_intf_addr(struct nlsock *netlink_cmd, int family, |
1117 | int type, uint32_t filter_mask) | |
289602d7 | 1118 | { |
d62a17ae | 1119 | struct { |
1120 | struct nlmsghdr n; | |
1121 | struct ifinfomsg ifm; | |
1122 | char buf[256]; | |
1123 | } req; | |
1124 | ||
097ef2af DS |
1125 | frrtrace(4, frr_zebra, netlink_request_intf_addr, netlink_cmd, family, |
1126 | type, filter_mask); | |
1127 | ||
d62a17ae | 1128 | /* Form the request, specifying filter (rtattr) if needed. */ |
1129 | memset(&req, 0, sizeof(req)); | |
1130 | req.n.nlmsg_type = type; | |
718f9b0f | 1131 | req.n.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST; |
d62a17ae | 1132 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
1133 | req.ifm.ifi_family = family; | |
1134 | ||
1135 | /* Include filter, if specified. */ | |
1136 | if (filter_mask) | |
312a6bee | 1137 | nl_attr_put32(&req.n, sizeof(req), IFLA_EXT_MASK, filter_mask); |
d62a17ae | 1138 | |
fd3f8e52 | 1139 | return netlink_request(netlink_cmd, &req); |
289602d7 | 1140 | } |
1141 | ||
62b4b7e4 PG |
1142 | enum netlink_msg_status |
1143 | netlink_put_gre_set_msg(struct nl_batch *bth, struct zebra_dplane_ctx *ctx) | |
1144 | { | |
1145 | enum dplane_op_e op; | |
1146 | enum netlink_msg_status ret; | |
1147 | ||
1148 | op = dplane_ctx_get_op(ctx); | |
1149 | assert(op == DPLANE_OP_GRE_SET); | |
1150 | ||
1151 | ret = netlink_batch_add_msg(bth, ctx, netlink_gre_set_msg_encoder, false); | |
1152 | ||
1153 | return ret; | |
1154 | } | |
1155 | ||
1fdc9eae | 1156 | /* Interface lookup by netlink socket. */ |
d62a17ae | 1157 | int interface_lookup_netlink(struct zebra_ns *zns) |
1fdc9eae | 1158 | { |
d62a17ae | 1159 | int ret; |
85a75f1e MS |
1160 | struct zebra_dplane_info dp_info; |
1161 | struct nlsock *netlink_cmd = &zns->netlink_cmd; | |
1162 | ||
1163 | /* Capture key info from ns struct */ | |
1164 | zebra_dplane_info_from_zns(&dp_info, zns, true /*is_cmd*/); | |
d62a17ae | 1165 | |
1166 | /* Get interface information. */ | |
85a75f1e | 1167 | ret = netlink_request_intf_addr(netlink_cmd, AF_PACKET, RTM_GETLINK, 0); |
d62a17ae | 1168 | if (ret < 0) |
1169 | return ret; | |
85a75f1e | 1170 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, |
9bfadae8 | 1171 | true); |
d62a17ae | 1172 | if (ret < 0) |
1173 | return ret; | |
1174 | ||
1175 | /* Get interface information - for bridge interfaces. */ | |
85a75f1e | 1176 | ret = netlink_request_intf_addr(netlink_cmd, AF_BRIDGE, RTM_GETLINK, |
d62a17ae | 1177 | RTEXT_FILTER_BRVLAN); |
1178 | if (ret < 0) | |
1179 | return ret; | |
85a75f1e | 1180 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, |
9bfadae8 | 1181 | true); |
d62a17ae | 1182 | if (ret < 0) |
1183 | return ret; | |
1184 | ||
acc8e687 CS |
1185 | ret = netlink_tunneldump_read(zns); |
1186 | if (ret < 0) | |
1187 | return ret; | |
1188 | ret = netlink_parse_info(netlink_interface, netlink_cmd, &dp_info, 0, | |
1189 | true); | |
1190 | if (ret < 0) | |
1191 | return ret; | |
1192 | ||
520ebf72 | 1193 | /* fixup linkages */ |
357b150d | 1194 | zebra_if_update_all_links(zns); |
d2bec88a SW |
1195 | return 0; |
1196 | } | |
1197 | ||
1198 | /** | |
1199 | * interface_addr_lookup_netlink() - Look up interface addresses | |
1200 | * | |
1201 | * @zns: Zebra netlink socket | |
1202 | * Return: Result status | |
1203 | */ | |
1204 | static int interface_addr_lookup_netlink(struct zebra_ns *zns) | |
1205 | { | |
1206 | int ret; | |
1207 | struct zebra_dplane_info dp_info; | |
1208 | struct nlsock *netlink_cmd = &zns->netlink_cmd; | |
1209 | ||
1210 | /* Capture key info from ns struct */ | |
1211 | zebra_dplane_info_from_zns(&dp_info, zns, true /*is_cmd*/); | |
520ebf72 | 1212 | |
d62a17ae | 1213 | /* Get IPv4 address of the interfaces. */ |
85a75f1e | 1214 | ret = netlink_request_intf_addr(netlink_cmd, AF_INET, RTM_GETADDR, 0); |
d62a17ae | 1215 | if (ret < 0) |
1216 | return ret; | |
85a75f1e | 1217 | ret = netlink_parse_info(netlink_interface_addr, netlink_cmd, &dp_info, |
9bfadae8 | 1218 | 0, true); |
d62a17ae | 1219 | if (ret < 0) |
1220 | return ret; | |
1221 | ||
1222 | /* Get IPv6 address of the interfaces. */ | |
85a75f1e | 1223 | ret = netlink_request_intf_addr(netlink_cmd, AF_INET6, RTM_GETADDR, 0); |
d62a17ae | 1224 | if (ret < 0) |
1225 | return ret; | |
85a75f1e | 1226 | ret = netlink_parse_info(netlink_interface_addr, netlink_cmd, &dp_info, |
9bfadae8 | 1227 | 0, true); |
d62a17ae | 1228 | if (ret < 0) |
1229 | return ret; | |
1230 | ||
1231 | return 0; | |
1fdc9eae | 1232 | } |
1233 | ||
e0ae31b8 DS |
1234 | int kernel_interface_set_master(struct interface *master, |
1235 | struct interface *slave) | |
1236 | { | |
1237 | struct zebra_ns *zns = zebra_ns_lookup(NS_DEFAULT); | |
1238 | ||
1239 | struct { | |
1240 | struct nlmsghdr n; | |
1241 | struct ifinfomsg ifa; | |
1242 | char buf[NL_PKT_BUF_SIZE]; | |
1243 | } req; | |
1244 | ||
0d6f7fd6 | 1245 | memset(&req, 0, sizeof(req)); |
e0ae31b8 DS |
1246 | |
1247 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); | |
1248 | req.n.nlmsg_flags = NLM_F_REQUEST; | |
1249 | req.n.nlmsg_type = RTM_SETLINK; | |
1250 | req.n.nlmsg_pid = zns->netlink_cmd.snl.nl_pid; | |
1251 | ||
1252 | req.ifa.ifi_index = slave->ifindex; | |
1253 | ||
a757997c JU |
1254 | nl_attr_put32(&req.n, sizeof(req), IFLA_MASTER, master->ifindex); |
1255 | nl_attr_put32(&req.n, sizeof(req), IFLA_LINK, slave->ifindex); | |
e0ae31b8 DS |
1256 | |
1257 | return netlink_talk(netlink_talk_filter, &req.n, &zns->netlink_cmd, zns, | |
9bfadae8 | 1258 | false); |
e0ae31b8 DS |
1259 | } |
1260 | ||
1fdc9eae | 1261 | /* Interface address modification. */ |
67e3369e JU |
1262 | static ssize_t netlink_address_msg_encoder(struct zebra_dplane_ctx *ctx, |
1263 | void *buf, size_t buflen) | |
1fdc9eae | 1264 | { |
d62a17ae | 1265 | int bytelen; |
64168803 MS |
1266 | const struct prefix *p; |
1267 | int cmd; | |
1268 | const char *label; | |
1fdc9eae | 1269 | |
d62a17ae | 1270 | struct { |
1271 | struct nlmsghdr n; | |
1272 | struct ifaddrmsg ifa; | |
67e3369e JU |
1273 | char buf[0]; |
1274 | } *req = buf; | |
1275 | ||
1276 | if (buflen < sizeof(*req)) | |
1277 | return 0; | |
1fdc9eae | 1278 | |
64168803 | 1279 | p = dplane_ctx_get_intf_addr(ctx); |
67e3369e | 1280 | memset(req, 0, sizeof(*req)); |
1fdc9eae | 1281 | |
64168803 | 1282 | bytelen = (p->family == AF_INET ? 4 : 16); |
1fdc9eae | 1283 | |
67e3369e JU |
1284 | req->n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifaddrmsg)); |
1285 | req->n.nlmsg_flags = NLM_F_REQUEST; | |
a55ba23f | 1286 | |
64168803 MS |
1287 | if (dplane_ctx_get_op(ctx) == DPLANE_OP_ADDR_INSTALL) |
1288 | cmd = RTM_NEWADDR; | |
1289 | else | |
1290 | cmd = RTM_DELADDR; | |
1291 | ||
67e3369e JU |
1292 | req->n.nlmsg_type = cmd; |
1293 | req->ifa.ifa_family = p->family; | |
1fdc9eae | 1294 | |
67e3369e | 1295 | req->ifa.ifa_index = dplane_ctx_get_ifindex(ctx); |
1fdc9eae | 1296 | |
67e3369e JU |
1297 | if (!nl_attr_put(&req->n, buflen, IFA_LOCAL, &p->u.prefix, bytelen)) |
1298 | return 0; | |
1fdc9eae | 1299 | |
64168803 MS |
1300 | if (p->family == AF_INET) { |
1301 | if (dplane_ctx_intf_is_connected(ctx)) { | |
1302 | p = dplane_ctx_get_intf_dest(ctx); | |
67e3369e JU |
1303 | if (!nl_attr_put(&req->n, buflen, IFA_ADDRESS, |
1304 | &p->u.prefix, bytelen)) | |
1305 | return 0; | |
0f3af738 JW |
1306 | } else if (cmd == RTM_NEWADDR) { |
1307 | struct in_addr broad = { | |
1308 | .s_addr = ipv4_broadcast_addr(p->u.prefix4.s_addr, | |
1309 | p->prefixlen) | |
1310 | }; | |
67e3369e JU |
1311 | if (!nl_attr_put(&req->n, buflen, IFA_BROADCAST, &broad, |
1312 | bytelen)) | |
1313 | return 0; | |
d62a17ae | 1314 | } |
1315 | } | |
1fdc9eae | 1316 | |
64168803 | 1317 | /* p is now either address or destination/bcast addr */ |
67e3369e | 1318 | req->ifa.ifa_prefixlen = p->prefixlen; |
e8d19a05 | 1319 | |
64168803 | 1320 | if (dplane_ctx_intf_is_secondary(ctx)) |
67e3369e | 1321 | SET_FLAG(req->ifa.ifa_flags, IFA_F_SECONDARY); |
1fdc9eae | 1322 | |
64168803 MS |
1323 | if (dplane_ctx_intf_has_label(ctx)) { |
1324 | label = dplane_ctx_get_intf_label(ctx); | |
67e3369e JU |
1325 | if (!nl_attr_put(&req->n, buflen, IFA_LABEL, label, |
1326 | strlen(label) + 1)) | |
1327 | return 0; | |
64168803 | 1328 | } |
1fdc9eae | 1329 | |
67e3369e | 1330 | return NLMSG_ALIGN(req->n.nlmsg_len); |
e86b71f1 PG |
1331 | } |
1332 | ||
67e3369e JU |
1333 | enum netlink_msg_status |
1334 | netlink_put_address_update_msg(struct nl_batch *bth, | |
1335 | struct zebra_dplane_ctx *ctx) | |
1336 | { | |
1337 | return netlink_batch_add_msg(bth, ctx, netlink_address_msg_encoder, | |
1338 | false); | |
e86b71f1 PG |
1339 | } |
1340 | ||
5d414138 SW |
1341 | static ssize_t netlink_intf_msg_encoder(struct zebra_dplane_ctx *ctx, void *buf, |
1342 | size_t buflen) | |
1343 | { | |
1344 | enum dplane_op_e op; | |
1345 | int cmd = 0; | |
1346 | ||
1347 | op = dplane_ctx_get_op(ctx); | |
1348 | ||
1349 | switch (op) { | |
1350 | case DPLANE_OP_INTF_UPDATE: | |
1351 | cmd = RTM_SETLINK; | |
1352 | break; | |
1353 | case DPLANE_OP_INTF_INSTALL: | |
1354 | cmd = RTM_NEWLINK; | |
1355 | break; | |
1356 | case DPLANE_OP_INTF_DELETE: | |
1357 | cmd = RTM_DELLINK; | |
1358 | break; | |
1359 | default: | |
1360 | flog_err( | |
1361 | EC_ZEBRA_NHG_FIB_UPDATE, | |
1362 | "Context received for kernel interface update with incorrect OP code (%u)", | |
1363 | op); | |
1364 | return -1; | |
1365 | } | |
1366 | ||
1367 | return netlink_intf_msg_encode(cmd, ctx, buf, buflen); | |
1368 | } | |
1369 | ||
1370 | enum netlink_msg_status | |
1371 | netlink_put_intf_update_msg(struct nl_batch *bth, struct zebra_dplane_ctx *ctx) | |
1372 | { | |
1373 | return netlink_batch_add_msg(bth, ctx, netlink_intf_msg_encoder, false); | |
1374 | } | |
1375 | ||
2414abd3 | 1376 | int netlink_interface_addr(struct nlmsghdr *h, ns_id_t ns_id, int startup) |
1fdc9eae | 1377 | { |
d62a17ae | 1378 | int len; |
1379 | struct ifaddrmsg *ifa; | |
1380 | struct rtattr *tb[IFA_MAX + 1]; | |
1381 | struct interface *ifp; | |
1382 | void *addr; | |
1383 | void *broad; | |
d7c0a89a | 1384 | uint8_t flags = 0; |
d62a17ae | 1385 | char *label = NULL; |
1386 | struct zebra_ns *zns; | |
cde1af84 | 1387 | uint32_t metric = METRIC_MAX; |
9254efed | 1388 | uint32_t kernel_flags = 0; |
d62a17ae | 1389 | |
14ed0615 DS |
1390 | frrtrace(3, frr_zebra, netlink_interface_addr, h, ns_id, startup); |
1391 | ||
d62a17ae | 1392 | zns = zebra_ns_lookup(ns_id); |
1393 | ifa = NLMSG_DATA(h); | |
1394 | ||
8a1b681c | 1395 | if (ifa->ifa_family != AF_INET && ifa->ifa_family != AF_INET6) { |
9df414fe | 1396 | flog_warn( |
e914ccbe | 1397 | EC_ZEBRA_UNKNOWN_FAMILY, |
87b5d1b0 DS |
1398 | "Invalid address family: %u received from kernel interface addr change: %s", |
1399 | ifa->ifa_family, nl_msg_type_to_str(h->nlmsg_type)); | |
d62a17ae | 1400 | return 0; |
8a1b681c | 1401 | } |
d62a17ae | 1402 | |
1403 | if (h->nlmsg_type != RTM_NEWADDR && h->nlmsg_type != RTM_DELADDR) | |
1404 | return 0; | |
1405 | ||
1406 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifaddrmsg)); | |
9bdf8618 | 1407 | if (len < 0) { |
15569c58 DA |
1408 | zlog_err( |
1409 | "%s: Message received from netlink is of a broken size: %d %zu", | |
1410 | __func__, h->nlmsg_len, | |
1411 | (size_t)NLMSG_LENGTH(sizeof(struct ifaddrmsg))); | |
d62a17ae | 1412 | return -1; |
9bdf8618 | 1413 | } |
d62a17ae | 1414 | |
d62a17ae | 1415 | netlink_parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), len); |
1416 | ||
1417 | ifp = if_lookup_by_index_per_ns(zns, ifa->ifa_index); | |
1418 | if (ifp == NULL) { | |
8eec31ef YY |
1419 | if (startup) { |
1420 | /* During startup, failure to lookup the referenced | |
1421 | * interface should not be an error, so we have | |
1422 | * downgraded this condition to warning, and we permit | |
1423 | * the startup interface state retrieval to continue. | |
1424 | */ | |
1425 | flog_warn(EC_LIB_INTERFACE, | |
1426 | "%s: can't find interface by index %d", | |
1427 | __func__, ifa->ifa_index); | |
1428 | return 0; | |
1429 | } else { | |
1430 | flog_err(EC_LIB_INTERFACE, | |
1431 | "%s: can't find interface by index %d", | |
1432 | __func__, ifa->ifa_index); | |
1433 | return -1; | |
1434 | } | |
d62a17ae | 1435 | } |
1436 | ||
9254efed DS |
1437 | /* Flags passed through */ |
1438 | if (tb[IFA_FLAGS]) | |
1439 | kernel_flags = *(int *)RTA_DATA(tb[IFA_FLAGS]); | |
1440 | else | |
1441 | kernel_flags = ifa->ifa_flags; | |
1442 | ||
d62a17ae | 1443 | if (IS_ZEBRA_DEBUG_KERNEL) /* remove this line to see initial ifcfg */ |
1444 | { | |
1445 | char buf[BUFSIZ]; | |
1446 | zlog_debug("netlink_interface_addr %s %s flags 0x%x:", | |
1447 | nl_msg_type_to_str(h->nlmsg_type), ifp->name, | |
9254efed | 1448 | kernel_flags); |
d62a17ae | 1449 | if (tb[IFA_LOCAL]) |
1450 | zlog_debug(" IFA_LOCAL %s/%d", | |
1451 | inet_ntop(ifa->ifa_family, | |
1452 | RTA_DATA(tb[IFA_LOCAL]), buf, | |
1453 | BUFSIZ), | |
1454 | ifa->ifa_prefixlen); | |
1455 | if (tb[IFA_ADDRESS]) | |
1456 | zlog_debug(" IFA_ADDRESS %s/%d", | |
1457 | inet_ntop(ifa->ifa_family, | |
1458 | RTA_DATA(tb[IFA_ADDRESS]), buf, | |
1459 | BUFSIZ), | |
1460 | ifa->ifa_prefixlen); | |
1461 | if (tb[IFA_BROADCAST]) | |
1462 | zlog_debug(" IFA_BROADCAST %s/%d", | |
1463 | inet_ntop(ifa->ifa_family, | |
1464 | RTA_DATA(tb[IFA_BROADCAST]), buf, | |
1465 | BUFSIZ), | |
1466 | ifa->ifa_prefixlen); | |
1467 | if (tb[IFA_LABEL] && strcmp(ifp->name, RTA_DATA(tb[IFA_LABEL]))) | |
1468 | zlog_debug(" IFA_LABEL %s", | |
1469 | (char *)RTA_DATA(tb[IFA_LABEL])); | |
1470 | ||
1471 | if (tb[IFA_CACHEINFO]) { | |
1472 | struct ifa_cacheinfo *ci = RTA_DATA(tb[IFA_CACHEINFO]); | |
1473 | zlog_debug(" IFA_CACHEINFO pref %d, valid %d", | |
1474 | ci->ifa_prefered, ci->ifa_valid); | |
1475 | } | |
1476 | } | |
1477 | ||
1478 | /* logic copied from iproute2/ip/ipaddress.c:print_addrinfo() */ | |
1479 | if (tb[IFA_LOCAL] == NULL) | |
1480 | tb[IFA_LOCAL] = tb[IFA_ADDRESS]; | |
1481 | if (tb[IFA_ADDRESS] == NULL) | |
1482 | tb[IFA_ADDRESS] = tb[IFA_LOCAL]; | |
1483 | ||
1484 | /* local interface address */ | |
1485 | addr = (tb[IFA_LOCAL] ? RTA_DATA(tb[IFA_LOCAL]) : NULL); | |
1486 | ||
1487 | /* is there a peer address? */ | |
1488 | if (tb[IFA_ADDRESS] | |
1489 | && memcmp(RTA_DATA(tb[IFA_ADDRESS]), RTA_DATA(tb[IFA_LOCAL]), | |
1490 | RTA_PAYLOAD(tb[IFA_ADDRESS]))) { | |
1491 | broad = RTA_DATA(tb[IFA_ADDRESS]); | |
1492 | SET_FLAG(flags, ZEBRA_IFA_PEER); | |
1493 | } else | |
1494 | /* seeking a broadcast address */ | |
1495 | broad = (tb[IFA_BROADCAST] ? RTA_DATA(tb[IFA_BROADCAST]) | |
1496 | : NULL); | |
1497 | ||
1498 | /* addr is primary key, SOL if we don't have one */ | |
1499 | if (addr == NULL) { | |
14a4d9d0 | 1500 | zlog_debug("%s: Local Interface Address is NULL for %s", |
1501 | __func__, ifp->name); | |
d62a17ae | 1502 | return -1; |
1503 | } | |
1504 | ||
1505 | /* Flags. */ | |
9254efed | 1506 | if (kernel_flags & IFA_F_SECONDARY) |
d62a17ae | 1507 | SET_FLAG(flags, ZEBRA_IFA_SECONDARY); |
1508 | ||
1509 | /* Label */ | |
1510 | if (tb[IFA_LABEL]) | |
1511 | label = (char *)RTA_DATA(tb[IFA_LABEL]); | |
1512 | ||
2e1cc436 | 1513 | if (label && strcmp(ifp->name, label) == 0) |
d62a17ae | 1514 | label = NULL; |
1515 | ||
cde1af84 AK |
1516 | if (tb[IFA_RT_PRIORITY]) |
1517 | metric = *(uint32_t *)RTA_DATA(tb[IFA_RT_PRIORITY]); | |
1518 | ||
d62a17ae | 1519 | /* Register interface address to the interface. */ |
1520 | if (ifa->ifa_family == AF_INET) { | |
930571d2 | 1521 | if (ifa->ifa_prefixlen > IPV4_MAX_BITLEN) { |
e17d9b2d | 1522 | zlog_err( |
87b5d1b0 DS |
1523 | "Invalid prefix length: %u received from kernel interface addr change: %s", |
1524 | ifa->ifa_prefixlen, | |
1525 | nl_msg_type_to_str(h->nlmsg_type)); | |
e17d9b2d | 1526 | return -1; |
930571d2 | 1527 | } |
20e879f9 | 1528 | |
d62a17ae | 1529 | if (h->nlmsg_type == RTM_NEWADDR) |
1530 | connected_add_ipv4(ifp, flags, (struct in_addr *)addr, | |
1531 | ifa->ifa_prefixlen, | |
cde1af84 AK |
1532 | (struct in_addr *)broad, label, |
1533 | metric); | |
20e879f9 MS |
1534 | else if (CHECK_FLAG(flags, ZEBRA_IFA_PEER)) { |
1535 | /* Delete with a peer address */ | |
1536 | connected_delete_ipv4( | |
1537 | ifp, flags, (struct in_addr *)addr, | |
1538 | ifa->ifa_prefixlen, broad); | |
1539 | } else | |
d62a17ae | 1540 | connected_delete_ipv4( |
1541 | ifp, flags, (struct in_addr *)addr, | |
fd267f08 | 1542 | ifa->ifa_prefixlen, NULL); |
d62a17ae | 1543 | } |
20e879f9 | 1544 | |
d62a17ae | 1545 | if (ifa->ifa_family == AF_INET6) { |
930571d2 | 1546 | if (ifa->ifa_prefixlen > IPV6_MAX_BITLEN) { |
e17d9b2d | 1547 | zlog_err( |
87b5d1b0 DS |
1548 | "Invalid prefix length: %u received from kernel interface addr change: %s", |
1549 | ifa->ifa_prefixlen, | |
1550 | nl_msg_type_to_str(h->nlmsg_type)); | |
e17d9b2d | 1551 | return -1; |
930571d2 | 1552 | } |
d62a17ae | 1553 | if (h->nlmsg_type == RTM_NEWADDR) { |
1554 | /* Only consider valid addresses; we'll not get a | |
1555 | * notification from | |
1556 | * the kernel till IPv6 DAD has completed, but at init | |
1557 | * time, Quagga | |
1558 | * does query for and will receive all addresses. | |
1559 | */ | |
9254efed | 1560 | if (!(kernel_flags |
d62a17ae | 1561 | & (IFA_F_DADFAILED | IFA_F_TENTATIVE))) |
60466a63 QY |
1562 | connected_add_ipv6(ifp, flags, |
1563 | (struct in6_addr *)addr, | |
60c0687a | 1564 | (struct in6_addr *)broad, |
cde1af84 AK |
1565 | ifa->ifa_prefixlen, label, |
1566 | metric); | |
d62a17ae | 1567 | } else |
1568 | connected_delete_ipv6(ifp, (struct in6_addr *)addr, | |
fd267f08 | 1569 | NULL, ifa->ifa_prefixlen); |
d62a17ae | 1570 | } |
1571 | ||
2a181147 SW |
1572 | /* |
1573 | * Linux kernel does not send route delete on interface down/addr del | |
1574 | * so we have to re-process routes it owns (i.e. kernel routes) | |
1575 | */ | |
1576 | if (h->nlmsg_type != RTM_NEWADDR) | |
1577 | rib_update(RIB_UPDATE_KERNEL); | |
1578 | ||
d62a17ae | 1579 | return 0; |
1fdc9eae | 1580 | } |
1581 | ||
e7c2c198 MS |
1582 | /* |
1583 | * Parse and validate an incoming interface address change message, | |
1584 | * generating a dplane context object. | |
1585 | * This runs in the dplane pthread; the context is enqueued to the | |
1586 | * main pthread for processing. | |
1587 | */ | |
1588 | int netlink_interface_addr_dplane(struct nlmsghdr *h, ns_id_t ns_id, | |
1589 | int startup /*ignored*/) | |
1590 | { | |
1591 | int len; | |
1592 | struct ifaddrmsg *ifa; | |
1593 | struct rtattr *tb[IFA_MAX + 1]; | |
1594 | void *addr; | |
1595 | void *broad; | |
1596 | char *label = NULL; | |
1597 | uint32_t metric = METRIC_MAX; | |
1598 | uint32_t kernel_flags = 0; | |
1599 | struct zebra_dplane_ctx *ctx; | |
1600 | struct prefix p; | |
1601 | ||
1602 | ifa = NLMSG_DATA(h); | |
1603 | ||
1604 | /* Validate message types */ | |
1605 | if (h->nlmsg_type != RTM_NEWADDR && h->nlmsg_type != RTM_DELADDR) | |
1606 | return 0; | |
1607 | ||
1608 | if (ifa->ifa_family != AF_INET && ifa->ifa_family != AF_INET6) { | |
1609 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1610 | zlog_debug("%s: %s: Invalid address family: %u", | |
1611 | __func__, nl_msg_type_to_str(h->nlmsg_type), | |
1612 | ifa->ifa_family); | |
1613 | return 0; | |
1614 | } | |
1615 | ||
1616 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifaddrmsg)); | |
1617 | if (len < 0) { | |
1618 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1619 | zlog_debug("%s: %s: netlink msg bad size: %d %zu", | |
1620 | __func__, nl_msg_type_to_str(h->nlmsg_type), | |
1621 | h->nlmsg_len, | |
1622 | (size_t)NLMSG_LENGTH( | |
1623 | sizeof(struct ifaddrmsg))); | |
1624 | return -1; | |
1625 | } | |
1626 | ||
1627 | netlink_parse_rtattr(tb, IFA_MAX, IFA_RTA(ifa), len); | |
1628 | ||
1629 | /* Flags passed through */ | |
1630 | if (tb[IFA_FLAGS]) | |
1631 | kernel_flags = *(int *)RTA_DATA(tb[IFA_FLAGS]); | |
1632 | else | |
1633 | kernel_flags = ifa->ifa_flags; | |
1634 | ||
1635 | if (IS_ZEBRA_DEBUG_KERNEL) { /* remove this line to see initial ifcfg */ | |
1636 | char buf[PREFIX_STRLEN]; | |
1637 | ||
1638 | zlog_debug("%s: %s nsid %u ifindex %u flags 0x%x:", __func__, | |
1639 | nl_msg_type_to_str(h->nlmsg_type), ns_id, | |
1640 | ifa->ifa_index, kernel_flags); | |
1641 | if (tb[IFA_LOCAL]) | |
1642 | zlog_debug(" IFA_LOCAL %s/%d", | |
1643 | inet_ntop(ifa->ifa_family, | |
1644 | RTA_DATA(tb[IFA_LOCAL]), buf, | |
1645 | sizeof(buf)), | |
1646 | ifa->ifa_prefixlen); | |
1647 | if (tb[IFA_ADDRESS]) | |
1648 | zlog_debug(" IFA_ADDRESS %s/%d", | |
1649 | inet_ntop(ifa->ifa_family, | |
1650 | RTA_DATA(tb[IFA_ADDRESS]), buf, | |
1651 | sizeof(buf)), | |
1652 | ifa->ifa_prefixlen); | |
1653 | if (tb[IFA_BROADCAST]) | |
1654 | zlog_debug(" IFA_BROADCAST %s/%d", | |
1655 | inet_ntop(ifa->ifa_family, | |
1656 | RTA_DATA(tb[IFA_BROADCAST]), buf, | |
1657 | sizeof(buf)), | |
1658 | ifa->ifa_prefixlen); | |
1659 | if (tb[IFA_LABEL]) | |
1660 | zlog_debug(" IFA_LABEL %s", | |
1661 | (const char *)RTA_DATA(tb[IFA_LABEL])); | |
1662 | ||
1663 | if (tb[IFA_CACHEINFO]) { | |
1664 | struct ifa_cacheinfo *ci = RTA_DATA(tb[IFA_CACHEINFO]); | |
1665 | ||
1666 | zlog_debug(" IFA_CACHEINFO pref %d, valid %d", | |
1667 | ci->ifa_prefered, ci->ifa_valid); | |
1668 | } | |
1669 | } | |
1670 | ||
1671 | /* Validate prefix length */ | |
1672 | ||
1673 | if (ifa->ifa_family == AF_INET | |
1674 | && ifa->ifa_prefixlen > IPV4_MAX_BITLEN) { | |
1675 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1676 | zlog_debug("%s: %s: Invalid prefix length: %u", | |
1677 | __func__, nl_msg_type_to_str(h->nlmsg_type), | |
1678 | ifa->ifa_prefixlen); | |
1679 | return -1; | |
1680 | } | |
1681 | ||
1682 | if (ifa->ifa_family == AF_INET6) { | |
1683 | if (ifa->ifa_prefixlen > IPV6_MAX_BITLEN) { | |
1684 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1685 | zlog_debug("%s: %s: Invalid prefix length: %u", | |
1686 | __func__, | |
1687 | nl_msg_type_to_str(h->nlmsg_type), | |
1688 | ifa->ifa_prefixlen); | |
1689 | return -1; | |
1690 | } | |
1691 | ||
1692 | /* Only consider valid addresses; we'll not get a kernel | |
1693 | * notification till IPv6 DAD has completed, but at init | |
1694 | * time, FRR does query for and will receive all addresses. | |
1695 | */ | |
1696 | if (h->nlmsg_type == RTM_NEWADDR | |
1697 | && (kernel_flags & (IFA_F_DADFAILED | IFA_F_TENTATIVE))) { | |
1698 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1699 | zlog_debug("%s: %s: Invalid/tentative addr", | |
1700 | __func__, | |
1701 | nl_msg_type_to_str(h->nlmsg_type)); | |
1702 | return 0; | |
1703 | } | |
1704 | } | |
1705 | ||
1706 | /* logic copied from iproute2/ip/ipaddress.c:print_addrinfo() */ | |
1707 | if (tb[IFA_LOCAL] == NULL) | |
1708 | tb[IFA_LOCAL] = tb[IFA_ADDRESS]; | |
1709 | if (tb[IFA_ADDRESS] == NULL) | |
1710 | tb[IFA_ADDRESS] = tb[IFA_LOCAL]; | |
1711 | ||
1712 | /* local interface address */ | |
1713 | addr = (tb[IFA_LOCAL] ? RTA_DATA(tb[IFA_LOCAL]) : NULL); | |
1714 | ||
1715 | /* addr is primary key, SOL if we don't have one */ | |
1716 | if (addr == NULL) { | |
1717 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1718 | zlog_debug("%s: %s: No local interface address", | |
1719 | __func__, nl_msg_type_to_str(h->nlmsg_type)); | |
1720 | return -1; | |
1721 | } | |
1722 | ||
1723 | /* Allocate a context object, now that validation is done. */ | |
1724 | ctx = dplane_ctx_alloc(); | |
1725 | if (h->nlmsg_type == RTM_NEWADDR) | |
1726 | dplane_ctx_set_op(ctx, DPLANE_OP_INTF_ADDR_ADD); | |
1727 | else | |
1728 | dplane_ctx_set_op(ctx, DPLANE_OP_INTF_ADDR_DEL); | |
1729 | ||
1730 | dplane_ctx_set_ifindex(ctx, ifa->ifa_index); | |
1731 | dplane_ctx_set_ns_id(ctx, ns_id); | |
1732 | ||
1733 | /* Convert addr to prefix */ | |
1734 | memset(&p, 0, sizeof(p)); | |
1735 | p.family = ifa->ifa_family; | |
1736 | p.prefixlen = ifa->ifa_prefixlen; | |
1737 | if (p.family == AF_INET) | |
1738 | p.u.prefix4 = *(struct in_addr *)addr; | |
1739 | else | |
1740 | p.u.prefix6 = *(struct in6_addr *)addr; | |
1741 | ||
1742 | dplane_ctx_set_intf_addr(ctx, &p); | |
1743 | ||
1744 | /* is there a peer address? */ | |
1745 | if (tb[IFA_ADDRESS] | |
1746 | && memcmp(RTA_DATA(tb[IFA_ADDRESS]), RTA_DATA(tb[IFA_LOCAL]), | |
1747 | RTA_PAYLOAD(tb[IFA_ADDRESS]))) { | |
1748 | broad = RTA_DATA(tb[IFA_ADDRESS]); | |
1749 | dplane_ctx_intf_set_connected(ctx); | |
1750 | } else if (tb[IFA_BROADCAST]) { | |
1751 | /* seeking a broadcast address */ | |
1752 | broad = RTA_DATA(tb[IFA_BROADCAST]); | |
1753 | dplane_ctx_intf_set_broadcast(ctx); | |
1754 | } else | |
1755 | broad = NULL; | |
1756 | ||
1757 | if (broad) { | |
1758 | /* Convert addr to prefix */ | |
1759 | memset(&p, 0, sizeof(p)); | |
1760 | p.family = ifa->ifa_family; | |
1761 | p.prefixlen = ifa->ifa_prefixlen; | |
1762 | if (p.family == AF_INET) | |
1763 | p.u.prefix4 = *(struct in_addr *)broad; | |
1764 | else | |
1765 | p.u.prefix6 = *(struct in6_addr *)broad; | |
1766 | ||
1767 | dplane_ctx_set_intf_dest(ctx, &p); | |
1768 | } | |
1769 | ||
1770 | /* Flags. */ | |
1771 | if (kernel_flags & IFA_F_SECONDARY) | |
1772 | dplane_ctx_intf_set_secondary(ctx); | |
1773 | ||
1774 | /* Label */ | |
1775 | if (tb[IFA_LABEL]) { | |
1776 | label = (char *)RTA_DATA(tb[IFA_LABEL]); | |
1777 | dplane_ctx_set_intf_label(ctx, label); | |
1778 | } | |
1779 | ||
1780 | if (tb[IFA_RT_PRIORITY]) | |
1781 | metric = *(uint32_t *)RTA_DATA(tb[IFA_RT_PRIORITY]); | |
1782 | ||
1783 | dplane_ctx_set_intf_metric(ctx, metric); | |
1784 | ||
1785 | /* Enqueue ctx for main pthread to process */ | |
1786 | dplane_provider_enqueue_to_zebra(ctx); | |
1787 | ||
1788 | return 0; | |
1789 | } | |
1790 | ||
2414abd3 | 1791 | int netlink_link_change(struct nlmsghdr *h, ns_id_t ns_id, int startup) |
1fdc9eae | 1792 | { |
d62a17ae | 1793 | int len; |
1794 | struct ifinfomsg *ifi; | |
1795 | struct rtattr *tb[IFLA_MAX + 1]; | |
1796 | struct rtattr *linkinfo[IFLA_MAX + 1]; | |
1797 | struct interface *ifp; | |
1798 | char *name = NULL; | |
1799 | char *kind = NULL; | |
48884c6b | 1800 | char *desc = NULL; |
d62a17ae | 1801 | char *slave_kind = NULL; |
1802 | struct zebra_ns *zns; | |
1803 | vrf_id_t vrf_id = VRF_DEFAULT; | |
e6f2bec0 | 1804 | enum zebra_iftype zif_type = ZEBRA_IF_OTHER; |
a81982fa | 1805 | enum zebra_slave_iftype zif_slave_type = ZEBRA_IF_SLAVE_NONE; |
d62a17ae | 1806 | ifindex_t bridge_ifindex = IFINDEX_INTERNAL; |
b9368db9 | 1807 | ifindex_t bond_ifindex = IFINDEX_INTERNAL; |
d62a17ae | 1808 | ifindex_t link_ifindex = IFINDEX_INTERNAL; |
97c4e1d0 | 1809 | uint8_t old_hw_addr[INTERFACE_HWADDR_MAX]; |
ba5165ec | 1810 | struct zebra_if *zif; |
14ddb3d9 | 1811 | ns_id_t link_nsid = ns_id; |
c36e442c | 1812 | ifindex_t master_infindex = IFINDEX_INTERNAL; |
00a7710c | 1813 | uint8_t bypass = 0; |
d62a17ae | 1814 | |
1815 | zns = zebra_ns_lookup(ns_id); | |
1816 | ifi = NLMSG_DATA(h); | |
1817 | ||
fe533c56 | 1818 | /* assume if not default zns, then new VRF */ |
d62a17ae | 1819 | if (!(h->nlmsg_type == RTM_NEWLINK || h->nlmsg_type == RTM_DELLINK)) { |
1820 | /* If this is not link add/delete message so print warning. */ | |
87b5d1b0 DS |
1821 | zlog_debug("netlink_link_change: wrong kernel message %s", |
1822 | nl_msg_type_to_str(h->nlmsg_type)); | |
d62a17ae | 1823 | return 0; |
1824 | } | |
1825 | ||
8a1b681c SW |
1826 | if (!(ifi->ifi_family == AF_UNSPEC || ifi->ifi_family == AF_BRIDGE |
1827 | || ifi->ifi_family == AF_INET6)) { | |
9df414fe | 1828 | flog_warn( |
e914ccbe | 1829 | EC_ZEBRA_UNKNOWN_FAMILY, |
87b5d1b0 DS |
1830 | "Invalid address family: %u received from kernel link change: %s", |
1831 | ifi->ifi_family, nl_msg_type_to_str(h->nlmsg_type)); | |
8a1b681c SW |
1832 | return 0; |
1833 | } | |
1834 | ||
d62a17ae | 1835 | len = h->nlmsg_len - NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
9bdf8618 | 1836 | if (len < 0) { |
15569c58 DA |
1837 | zlog_err( |
1838 | "%s: Message received from netlink is of a broken size %d %zu", | |
1839 | __func__, h->nlmsg_len, | |
1840 | (size_t)NLMSG_LENGTH(sizeof(struct ifinfomsg))); | |
d62a17ae | 1841 | return -1; |
9bdf8618 | 1842 | } |
d62a17ae | 1843 | |
1844 | /* We are interested in some AF_BRIDGE notifications. */ | |
1845 | if (ifi->ifi_family == AF_BRIDGE) | |
1846 | return netlink_bridge_interface(h, len, ns_id, startup); | |
1847 | ||
1848 | /* Looking up interface name. */ | |
0d6f7fd6 | 1849 | memset(linkinfo, 0, sizeof(linkinfo)); |
0dcd8506 SW |
1850 | netlink_parse_rtattr_flags(tb, IFLA_MAX, IFLA_RTA(ifi), len, |
1851 | NLA_F_NESTED); | |
1fdc9eae | 1852 | |
d62a17ae | 1853 | /* check for wireless messages to ignore */ |
1854 | if ((tb[IFLA_WIRELESS] != NULL) && (ifi->ifi_change == 0)) { | |
1855 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1856 | zlog_debug("%s: ignoring IFLA_WIRELESS message", | |
1857 | __func__); | |
1858 | return 0; | |
1859 | } | |
1fdc9eae | 1860 | |
d62a17ae | 1861 | if (tb[IFLA_IFNAME] == NULL) |
1862 | return -1; | |
1863 | name = (char *)RTA_DATA(tb[IFLA_IFNAME]); | |
1fdc9eae | 1864 | |
e9f79fff MS |
1865 | /* Must be valid string. */ |
1866 | len = RTA_PAYLOAD(tb[IFLA_IFNAME]); | |
1867 | if (len < 2 || name[len - 1] != '\0') { | |
1868 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1869 | zlog_debug("%s: invalid intf name", __func__); | |
1870 | return -1; | |
1871 | } | |
1872 | ||
d62a17ae | 1873 | if (tb[IFLA_LINKINFO]) { |
c9d842c7 DS |
1874 | netlink_parse_rtattr_nested(linkinfo, IFLA_INFO_MAX, |
1875 | tb[IFLA_LINKINFO]); | |
1fdc9eae | 1876 | |
d62a17ae | 1877 | if (linkinfo[IFLA_INFO_KIND]) |
1878 | kind = RTA_DATA(linkinfo[IFLA_INFO_KIND]); | |
1fdc9eae | 1879 | |
d62a17ae | 1880 | if (linkinfo[IFLA_INFO_SLAVE_KIND]) |
1881 | slave_kind = RTA_DATA(linkinfo[IFLA_INFO_SLAVE_KIND]); | |
1fdc9eae | 1882 | |
d62a17ae | 1883 | netlink_determine_zebra_iftype(kind, &zif_type); |
1884 | } | |
6675513d | 1885 | |
d62a17ae | 1886 | /* If linking to another interface, note it. */ |
1887 | if (tb[IFLA_LINK]) | |
1888 | link_ifindex = *(ifindex_t *)RTA_DATA(tb[IFLA_LINK]); | |
1fdc9eae | 1889 | |
b1cc23b2 | 1890 | if (tb[IFLA_LINK_NETNSID]) { |
14ddb3d9 | 1891 | link_nsid = *(ns_id_t *)RTA_DATA(tb[IFLA_LINK_NETNSID]); |
b1cc23b2 PG |
1892 | link_nsid = ns_id_get_absolute(ns_id, link_nsid); |
1893 | } | |
48884c6b DS |
1894 | if (tb[IFLA_IFALIAS]) { |
1895 | desc = (char *)RTA_DATA(tb[IFLA_IFALIAS]); | |
1896 | } | |
1897 | ||
d62a17ae | 1898 | /* See if interface is present. */ |
1899 | ifp = if_lookup_by_name_per_ns(zns, name); | |
1900 | ||
1901 | if (h->nlmsg_type == RTM_NEWLINK) { | |
e4c5b3ba IR |
1902 | /* If VRF, create or update the VRF structure itself. */ |
1903 | if (zif_type == ZEBRA_IF_VRF && !vrf_is_backend_netns()) { | |
1904 | netlink_vrf_change(h, tb[IFLA_LINKINFO], ns_id, name); | |
1905 | vrf_id = (vrf_id_t)ifi->ifi_index; | |
1906 | } | |
1907 | ||
d62a17ae | 1908 | if (tb[IFLA_MASTER]) { |
78dd30b2 PG |
1909 | if (slave_kind && (strcmp(slave_kind, "vrf") == 0) |
1910 | && !vrf_is_backend_netns()) { | |
d62a17ae | 1911 | zif_slave_type = ZEBRA_IF_SLAVE_VRF; |
c36e442c AK |
1912 | master_infindex = vrf_id = |
1913 | *(uint32_t *)RTA_DATA(tb[IFLA_MASTER]); | |
d62a17ae | 1914 | } else if (slave_kind |
1915 | && (strcmp(slave_kind, "bridge") == 0)) { | |
1916 | zif_slave_type = ZEBRA_IF_SLAVE_BRIDGE; | |
c36e442c | 1917 | master_infindex = bridge_ifindex = |
d62a17ae | 1918 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); |
b9368db9 DD |
1919 | } else if (slave_kind |
1920 | && (strcmp(slave_kind, "bond") == 0)) { | |
1921 | zif_slave_type = ZEBRA_IF_SLAVE_BOND; | |
c36e442c | 1922 | master_infindex = bond_ifindex = |
b9368db9 | 1923 | *(ifindex_t *)RTA_DATA(tb[IFLA_MASTER]); |
00a7710c | 1924 | bypass = netlink_parse_lacp_bypass(linkinfo); |
d62a17ae | 1925 | } else |
1926 | zif_slave_type = ZEBRA_IF_SLAVE_OTHER; | |
1927 | } | |
fe533c56 PG |
1928 | if (vrf_is_backend_netns()) |
1929 | vrf_id = (vrf_id_t)ns_id; | |
d62a17ae | 1930 | if (ifp == NULL |
1931 | || !CHECK_FLAG(ifp->status, ZEBRA_INTERFACE_ACTIVE)) { | |
1932 | /* Add interface notification from kernel */ | |
1933 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1934 | zlog_debug( | |
3efd0893 | 1935 | "RTM_NEWLINK ADD for %s(%u) vrf_id %u type %d sl_type %d master %u flags 0x%x", |
d62a17ae | 1936 | name, ifi->ifi_index, vrf_id, zif_type, |
c36e442c | 1937 | zif_slave_type, master_infindex, |
d62a17ae | 1938 | ifi->ifi_flags); |
1939 | ||
1940 | if (ifp == NULL) { | |
1941 | /* unknown interface */ | |
f60a1188 | 1942 | ifp = if_get_by_name(name, vrf_id, NULL); |
d62a17ae | 1943 | } else { |
1944 | /* pre-configured interface, learnt now */ | |
096f7609 | 1945 | if (ifp->vrf->vrf_id != vrf_id) |
a36898e7 | 1946 | if_update_to_new_vrf(ifp, vrf_id); |
d62a17ae | 1947 | } |
1948 | ||
1949 | /* Update interface information. */ | |
1950 | set_ifindex(ifp, ifi->ifi_index, zns); | |
1951 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
d23b983b | 1952 | if (!tb[IFLA_MTU]) { |
9df414fe | 1953 | zlog_debug( |
d23b983b SW |
1954 | "RTM_NEWLINK for interface %s(%u) without MTU set", |
1955 | name, ifi->ifi_index); | |
1956 | return 0; | |
1957 | } | |
d62a17ae | 1958 | ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]); |
1959 | ifp->metric = 0; | |
1960 | ifp->ptm_status = ZEBRA_PTM_STATUS_UNKNOWN; | |
1961 | ||
1962 | /* Set interface type */ | |
1963 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); | |
b0fa6f6a CS |
1964 | if (IS_ZEBRA_IF_VRF(ifp)) |
1965 | SET_FLAG(ifp->status, | |
1966 | ZEBRA_INTERFACE_VRF_LOOPBACK); | |
d62a17ae | 1967 | |
1968 | /* Update link. */ | |
86bad1cb | 1969 | zebra_if_update_link(ifp, link_ifindex, link_nsid); |
d62a17ae | 1970 | |
8975bbbd IR |
1971 | ifp->ll_type = |
1972 | netlink_to_zebra_link_type(ifi->ifi_type); | |
d62a17ae | 1973 | netlink_interface_update_hw_addr(tb, ifp); |
1974 | ||
1975 | /* Inform clients, install any configured addresses. */ | |
1976 | if_add_update(ifp); | |
1977 | ||
1978 | /* Extract and save L2 interface information, take | |
1979 | * additional actions. */ | |
1980 | netlink_interface_update_l2info( | |
14ddb3d9 PG |
1981 | ifp, linkinfo[IFLA_INFO_DATA], |
1982 | 1, link_nsid); | |
d62a17ae | 1983 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp)) |
c7620108 PG |
1984 | zebra_l2if_update_bridge_slave( |
1985 | ifp, bridge_ifindex, ns_id, | |
1986 | ZEBRA_BRIDGE_NO_ACTION); | |
b9368db9 | 1987 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp)) |
00a7710c AK |
1988 | zebra_l2if_update_bond_slave(ifp, bond_ifindex, |
1989 | !!bypass); | |
c36e442c | 1990 | |
0dcd8506 SW |
1991 | if (tb[IFLA_PROTO_DOWN]) |
1992 | netlink_proc_dplane_if_protodown(ifp->info, tb); | |
c36e442c | 1993 | |
096f7609 | 1994 | } else if (ifp->vrf->vrf_id != vrf_id) { |
d62a17ae | 1995 | /* VRF change for an interface. */ |
1996 | if (IS_ZEBRA_DEBUG_KERNEL) | |
1997 | zlog_debug( | |
3efd0893 | 1998 | "RTM_NEWLINK vrf-change for %s(%u) vrf_id %u -> %u flags 0x%x", |
096f7609 IR |
1999 | name, ifp->ifindex, ifp->vrf->vrf_id, |
2000 | vrf_id, ifi->ifi_flags); | |
d62a17ae | 2001 | |
a36898e7 | 2002 | if_handle_vrf_change(ifp, vrf_id); |
d62a17ae | 2003 | } else { |
b9368db9 | 2004 | bool was_bridge_slave, was_bond_slave; |
c7620108 | 2005 | uint8_t chgflags = ZEBRA_BRIDGE_NO_ACTION; |
2d04bd98 | 2006 | zif = ifp->info; |
d62a17ae | 2007 | |
2008 | /* Interface update. */ | |
2009 | if (IS_ZEBRA_DEBUG_KERNEL) | |
2010 | zlog_debug( | |
3efd0893 | 2011 | "RTM_NEWLINK update for %s(%u) sl_type %d master %u flags 0x%x", |
d62a17ae | 2012 | name, ifp->ifindex, zif_slave_type, |
c36e442c | 2013 | master_infindex, ifi->ifi_flags); |
d62a17ae | 2014 | |
2015 | set_ifindex(ifp, ifi->ifi_index, zns); | |
d23b983b | 2016 | if (!tb[IFLA_MTU]) { |
9df414fe | 2017 | zlog_debug( |
d23b983b SW |
2018 | "RTM_NEWLINK for interface %s(%u) without MTU set", |
2019 | name, ifi->ifi_index); | |
2020 | return 0; | |
2021 | } | |
d62a17ae | 2022 | ifp->mtu6 = ifp->mtu = *(int *)RTA_DATA(tb[IFLA_MTU]); |
2023 | ifp->metric = 0; | |
2024 | ||
2025 | /* Update interface type - NOTE: Only slave_type can | |
2026 | * change. */ | |
2027 | was_bridge_slave = IS_ZEBRA_IF_BRIDGE_SLAVE(ifp); | |
b9368db9 | 2028 | was_bond_slave = IS_ZEBRA_IF_BOND_SLAVE(ifp); |
d62a17ae | 2029 | zebra_if_set_ziftype(ifp, zif_type, zif_slave_type); |
2030 | ||
97c4e1d0 CS |
2031 | memcpy(old_hw_addr, ifp->hw_addr, INTERFACE_HWADDR_MAX); |
2032 | ||
ecffe916 | 2033 | /* Update link. */ |
86bad1cb | 2034 | zebra_if_update_link(ifp, link_ifindex, link_nsid); |
ecffe916 | 2035 | |
8975bbbd IR |
2036 | ifp->ll_type = |
2037 | netlink_to_zebra_link_type(ifi->ifi_type); | |
d62a17ae | 2038 | netlink_interface_update_hw_addr(tb, ifp); |
2039 | ||
0dcd8506 SW |
2040 | if (tb[IFLA_PROTO_DOWN]) |
2041 | netlink_proc_dplane_if_protodown(ifp->info, tb); | |
2d04bd98 | 2042 | |
d62a17ae | 2043 | if (if_is_no_ptm_operative(ifp)) { |
8b48cdb9 | 2044 | bool is_up = if_is_operative(ifp); |
d62a17ae | 2045 | ifp->flags = ifi->ifi_flags & 0x0000fffff; |
2d04bd98 CS |
2046 | if (!if_is_no_ptm_operative(ifp) || |
2047 | CHECK_FLAG(zif->flags, | |
2048 | ZIF_FLAG_PROTODOWN)) { | |
d62a17ae | 2049 | if (IS_ZEBRA_DEBUG_KERNEL) |
2050 | zlog_debug( | |
2051 | "Intf %s(%u) has gone DOWN", | |
2052 | name, ifp->ifindex); | |
2053 | if_down(ifp); | |
2a181147 | 2054 | rib_update(RIB_UPDATE_KERNEL); |
d62a17ae | 2055 | } else if (if_is_operative(ifp)) { |
c7620108 PG |
2056 | bool mac_updated = false; |
2057 | ||
d62a17ae | 2058 | /* Must notify client daemons of new |
2059 | * interface status. */ | |
2060 | if (IS_ZEBRA_DEBUG_KERNEL) | |
2061 | zlog_debug( | |
2062 | "Intf %s(%u) PTM up, notifying clients", | |
2063 | name, ifp->ifindex); | |
8b48cdb9 | 2064 | if_up(ifp, !is_up); |
97c4e1d0 CS |
2065 | |
2066 | /* Update EVPN VNI when SVI MAC change | |
2067 | */ | |
c7620108 PG |
2068 | if (memcmp(old_hw_addr, ifp->hw_addr, |
2069 | INTERFACE_HWADDR_MAX)) | |
2070 | mac_updated = true; | |
2071 | if (IS_ZEBRA_IF_VLAN(ifp) | |
2072 | && mac_updated) { | |
97c4e1d0 CS |
2073 | struct interface *link_if; |
2074 | ||
2075 | link_if = | |
2076 | if_lookup_by_index_per_ns( | |
2077 | zebra_ns_lookup(NS_DEFAULT), | |
2078 | link_ifindex); | |
2079 | if (link_if) | |
2080 | zebra_vxlan_svi_up(ifp, | |
2081 | link_if); | |
c7620108 PG |
2082 | } else if (mac_updated |
2083 | && IS_ZEBRA_IF_BRIDGE(ifp)) { | |
2084 | zlog_debug( | |
2085 | "Intf %s(%u) bridge changed MAC address", | |
2086 | name, ifp->ifindex); | |
2087 | chgflags = | |
2088 | ZEBRA_BRIDGE_MASTER_MAC_CHANGE; | |
97c4e1d0 | 2089 | } |
d62a17ae | 2090 | } |
2091 | } else { | |
2092 | ifp->flags = ifi->ifi_flags & 0x0000fffff; | |
2d04bd98 CS |
2093 | if (if_is_operative(ifp) && |
2094 | !CHECK_FLAG(zif->flags, | |
2095 | ZIF_FLAG_PROTODOWN)) { | |
d62a17ae | 2096 | if (IS_ZEBRA_DEBUG_KERNEL) |
2097 | zlog_debug( | |
2098 | "Intf %s(%u) has come UP", | |
2099 | name, ifp->ifindex); | |
8b48cdb9 | 2100 | if_up(ifp, true); |
f56a15b5 PG |
2101 | if (IS_ZEBRA_IF_BRIDGE(ifp)) |
2102 | chgflags = | |
2103 | ZEBRA_BRIDGE_MASTER_UP; | |
6f908ded QY |
2104 | } else { |
2105 | if (IS_ZEBRA_DEBUG_KERNEL) | |
2106 | zlog_debug( | |
7913714e | 2107 | "Intf %s(%u) has gone DOWN", |
6f908ded QY |
2108 | name, ifp->ifindex); |
2109 | if_down(ifp); | |
2a181147 | 2110 | rib_update(RIB_UPDATE_KERNEL); |
d62a17ae | 2111 | } |
2112 | } | |
2113 | ||
2114 | /* Extract and save L2 interface information, take | |
2115 | * additional actions. */ | |
2116 | netlink_interface_update_l2info( | |
14ddb3d9 PG |
2117 | ifp, linkinfo[IFLA_INFO_DATA], |
2118 | 0, link_nsid); | |
c7620108 PG |
2119 | if (IS_ZEBRA_IF_BRIDGE(ifp)) |
2120 | zebra_l2if_update_bridge(ifp, chgflags); | |
c36e442c AK |
2121 | if (IS_ZEBRA_IF_BOND(ifp)) |
2122 | zebra_l2if_update_bond(ifp, true); | |
d62a17ae | 2123 | if (IS_ZEBRA_IF_BRIDGE_SLAVE(ifp) || was_bridge_slave) |
c7620108 PG |
2124 | zebra_l2if_update_bridge_slave( |
2125 | ifp, bridge_ifindex, ns_id, chgflags); | |
b9368db9 | 2126 | else if (IS_ZEBRA_IF_BOND_SLAVE(ifp) || was_bond_slave) |
00a7710c AK |
2127 | zebra_l2if_update_bond_slave(ifp, bond_ifindex, |
2128 | !!bypass); | |
d62a17ae | 2129 | } |
26f13577 DS |
2130 | |
2131 | zif = ifp->info; | |
2132 | if (zif) { | |
2133 | XFREE(MTYPE_TMP, zif->desc); | |
2134 | if (desc) | |
2135 | zif->desc = XSTRDUP(MTYPE_TMP, desc); | |
2136 | } | |
d62a17ae | 2137 | } else { |
2138 | /* Delete interface notification from kernel */ | |
2139 | if (ifp == NULL) { | |
9df414fe QY |
2140 | if (IS_ZEBRA_DEBUG_KERNEL) |
2141 | zlog_debug( | |
2142 | "RTM_DELLINK for unknown interface %s(%u)", | |
2143 | name, ifi->ifi_index); | |
d62a17ae | 2144 | return 0; |
2145 | } | |
2146 | ||
2147 | if (IS_ZEBRA_DEBUG_KERNEL) | |
2148 | zlog_debug("RTM_DELLINK for %s(%u)", name, | |
2149 | ifp->ifindex); | |
2150 | ||
2151 | UNSET_FLAG(ifp->status, ZEBRA_INTERFACE_VRF_LOOPBACK); | |
2152 | ||
c36e442c AK |
2153 | if (IS_ZEBRA_IF_BOND(ifp)) |
2154 | zebra_l2if_update_bond(ifp, false); | |
00a7710c AK |
2155 | if (IS_ZEBRA_IF_BOND_SLAVE(ifp)) |
2156 | zebra_l2if_update_bond_slave(ifp, bond_ifindex, false); | |
d62a17ae | 2157 | /* Special handling for bridge or VxLAN interfaces. */ |
2158 | if (IS_ZEBRA_IF_BRIDGE(ifp)) | |
2159 | zebra_l2_bridge_del(ifp); | |
2160 | else if (IS_ZEBRA_IF_VXLAN(ifp)) | |
2161 | zebra_l2_vxlanif_del(ifp); | |
2162 | ||
d0438da6 | 2163 | if_delete_update(&ifp); |
e4c5b3ba IR |
2164 | |
2165 | /* If VRF, delete the VRF structure itself. */ | |
2166 | if (zif_type == ZEBRA_IF_VRF && !vrf_is_backend_netns()) | |
2167 | netlink_vrf_change(h, tb[IFLA_LINKINFO], ns_id, name); | |
1fdc9eae | 2168 | } |
2169 | ||
d62a17ae | 2170 | return 0; |
1fdc9eae | 2171 | } |
718e3744 | 2172 | |
5d414138 SW |
2173 | /** |
2174 | * Interface encoding helper function. | |
2175 | * | |
2176 | * \param[in] cmd netlink command. | |
2177 | * \param[in] ctx dataplane context (information snapshot). | |
2178 | * \param[out] buf buffer to hold the packet. | |
2179 | * \param[in] buflen amount of buffer bytes. | |
2180 | */ | |
c3bd894e | 2181 | |
5d414138 SW |
2182 | ssize_t netlink_intf_msg_encode(uint16_t cmd, |
2183 | const struct zebra_dplane_ctx *ctx, void *buf, | |
2184 | size_t buflen) | |
2185 | { | |
c3bd894e QY |
2186 | struct { |
2187 | struct nlmsghdr n; | |
2188 | struct ifinfomsg ifa; | |
5d414138 SW |
2189 | char buf[]; |
2190 | } *req = buf; | |
c3bd894e | 2191 | |
5d414138 SW |
2192 | struct rtattr *nest_protodown_reason; |
2193 | ifindex_t ifindex = dplane_ctx_get_ifindex(ctx); | |
5d414138 | 2194 | bool down = dplane_ctx_intf_is_protodown(ctx); |
ab465d24 | 2195 | bool pd_reason_val = dplane_ctx_get_intf_pd_reason_val(ctx); |
5d414138 SW |
2196 | struct nlsock *nl = |
2197 | kernel_netlink_nlsock_lookup(dplane_ctx_get_ns_sock(ctx)); | |
c3bd894e | 2198 | |
5d414138 SW |
2199 | if (buflen < sizeof(*req)) |
2200 | return 0; | |
c3bd894e | 2201 | |
5d414138 | 2202 | memset(req, 0, sizeof(*req)); |
c3bd894e | 2203 | |
5d414138 SW |
2204 | if (cmd != RTM_SETLINK) |
2205 | flog_err( | |
2206 | EC_ZEBRA_INTF_UPDATE_FAILURE, | |
2207 | "Only RTM_SETLINK message type currently supported in dplane pthread"); | |
c3bd894e | 2208 | |
5d414138 SW |
2209 | req->n.nlmsg_len = NLMSG_LENGTH(sizeof(struct ifinfomsg)); |
2210 | req->n.nlmsg_flags = NLM_F_REQUEST; | |
2211 | req->n.nlmsg_type = cmd; | |
2212 | req->n.nlmsg_pid = nl->snl.nl_pid; | |
2213 | ||
2214 | req->ifa.ifi_index = ifindex; | |
2215 | ||
2216 | nl_attr_put8(&req->n, buflen, IFLA_PROTO_DOWN, down); | |
2217 | nl_attr_put32(&req->n, buflen, IFLA_LINK, ifindex); | |
2218 | ||
0dcd8506 SW |
2219 | /* Reason info nest */ |
2220 | nest_protodown_reason = | |
2221 | nl_attr_nest(&req->n, buflen, IFLA_PROTO_DOWN_REASON); | |
5d414138 | 2222 | |
0dcd8506 SW |
2223 | if (!nest_protodown_reason) |
2224 | return -1; | |
5d414138 | 2225 | |
0dcd8506 SW |
2226 | nl_attr_put32(&req->n, buflen, IFLA_PROTO_DOWN_REASON_MASK, |
2227 | (1 << frr_protodown_r_bit)); | |
2228 | nl_attr_put32(&req->n, buflen, IFLA_PROTO_DOWN_REASON_VALUE, | |
ab465d24 | 2229 | ((int)pd_reason_val) << frr_protodown_r_bit); |
5d414138 | 2230 | |
0dcd8506 | 2231 | nl_attr_nest_end(&req->n, nest_protodown_reason); |
5d414138 SW |
2232 | |
2233 | if (IS_ZEBRA_DEBUG_KERNEL) | |
ab465d24 SW |
2234 | zlog_debug("%s: %s, protodown=%d reason_val=%d ifindex=%u", |
2235 | __func__, nl_msg_type_to_str(cmd), down, | |
2236 | pd_reason_val, ifindex); | |
5d414138 SW |
2237 | |
2238 | return NLMSG_ALIGN(req->n.nlmsg_len); | |
c3bd894e QY |
2239 | } |
2240 | ||
718e3744 | 2241 | /* Interface information read by netlink. */ |
d62a17ae | 2242 | void interface_list(struct zebra_ns *zns) |
718e3744 | 2243 | { |
d62a17ae | 2244 | interface_lookup_netlink(zns); |
d9f5b2f5 SW |
2245 | /* We add routes for interface address, |
2246 | * so we need to get the nexthop info | |
2247 | * from the kernel before we can do that | |
2248 | */ | |
81505946 | 2249 | netlink_nexthop_read(zns); |
cc4e0650 | 2250 | |
d2bec88a | 2251 | interface_addr_lookup_netlink(zns); |
718e3744 | 2252 | } |
ddfeb486 | 2253 | |
c40e1b1c SW |
2254 | void if_netlink_set_frr_protodown_r_bit(uint8_t bit) |
2255 | { | |
2256 | if (IS_ZEBRA_DEBUG_KERNEL) | |
47c1d76a SW |
2257 | zlog_debug( |
2258 | "Protodown reason bit index changed: bit-index %u -> bit-index %u", | |
2259 | frr_protodown_r_bit, bit); | |
c40e1b1c SW |
2260 | |
2261 | frr_protodown_r_bit = bit; | |
2262 | } | |
2263 | ||
2264 | void if_netlink_unset_frr_protodown_r_bit(void) | |
2265 | { | |
2266 | if (IS_ZEBRA_DEBUG_KERNEL) | |
47c1d76a SW |
2267 | zlog_debug( |
2268 | "Protodown reason bit index changed: bit-index %u -> bit-index %u", | |
2269 | frr_protodown_r_bit, FRR_PROTODOWN_REASON_DEFAULT_BIT); | |
c40e1b1c SW |
2270 | |
2271 | frr_protodown_r_bit = FRR_PROTODOWN_REASON_DEFAULT_BIT; | |
2272 | } | |
2273 | ||
2274 | ||
2275 | bool if_netlink_frr_protodown_r_bit_is_set(void) | |
2276 | { | |
2277 | return (frr_protodown_r_bit != FRR_PROTODOWN_REASON_DEFAULT_BIT); | |
2278 | } | |
2279 | ||
2280 | uint8_t if_netlink_get_frr_protodown_r_bit(void) | |
2281 | { | |
2282 | return frr_protodown_r_bit; | |
2283 | } | |
2284 | ||
acc8e687 CS |
2285 | /** |
2286 | * netlink_request_tunneldump() - Request all tunnels from the linux kernel | |
2287 | * | |
2288 | * @zns: Zebra namespace | |
2289 | * @family: AF_* netlink family | |
2290 | * @type: RTM_* (RTM_GETTUNNEL) route type | |
2291 | * | |
2292 | * Return: Result status | |
2293 | */ | |
2294 | static int netlink_request_tunneldump(struct zebra_ns *zns, int family, | |
2295 | int ifindex) | |
2296 | { | |
2297 | struct { | |
2298 | struct nlmsghdr n; | |
2299 | struct tunnel_msg tmsg; | |
2300 | char buf[256]; | |
2301 | } req; | |
2302 | ||
2303 | /* Form the request */ | |
2304 | memset(&req, 0, sizeof(req)); | |
2305 | req.n.nlmsg_len = NLMSG_LENGTH(sizeof(struct tunnel_msg)); | |
2306 | req.n.nlmsg_type = RTM_GETTUNNEL; | |
2307 | req.n.nlmsg_flags = NLM_F_ROOT | NLM_F_MATCH | NLM_F_REQUEST; | |
2308 | req.tmsg.family = family; | |
2309 | req.tmsg.ifindex = ifindex; | |
2310 | ||
2311 | return netlink_request(&zns->netlink_cmd, &req); | |
2312 | } | |
2313 | ||
2314 | /* | |
2315 | * Currently we only ask for vxlan l3svd vni information. | |
2316 | * In the future this can be expanded. | |
2317 | */ | |
2318 | int netlink_tunneldump_read(struct zebra_ns *zns) | |
2319 | { | |
2320 | int ret = 0; | |
2321 | struct zebra_dplane_info dp_info; | |
2322 | struct route_node *rn; | |
2323 | struct interface *tmp_if = NULL; | |
2324 | struct zebra_if *zif; | |
2325 | ||
2326 | zebra_dplane_info_from_zns(&dp_info, zns, true /*is_cmd*/); | |
2327 | ||
2328 | for (rn = route_top(zns->if_table); rn; rn = route_next(rn)) { | |
2329 | tmp_if = (struct interface *)rn->info; | |
2330 | if (!tmp_if) | |
2331 | continue; | |
2332 | zif = tmp_if->info; | |
2333 | if (!zif || zif->zif_type != ZEBRA_IF_VXLAN) | |
2334 | continue; | |
2335 | ||
2336 | ret = netlink_request_tunneldump(zns, PF_BRIDGE, | |
2337 | tmp_if->ifindex); | |
2338 | if (ret < 0) | |
2339 | return ret; | |
2340 | } | |
2341 | return 0; | |
2342 | } | |
ddfeb486 | 2343 | #endif /* GNU_LINUX */ |