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02b59d57 TG |
1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
2 | ||
3 | /*** | |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2013 Tom Gundersen <teg@jklm.no> | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
9 | under the terms of the GNU Lesser General Public License as published by | |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
11 | (at your option) any later version. | |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | Lesser General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU Lesser General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
987efa17 TG |
22 | #include <net/if.h> |
23 | ||
3be1d7e0 TG |
24 | #include "networkd-netdev.h" |
25 | #include "networkd-netdev-bridge.h" | |
26 | #include "networkd-netdev-bond.h" | |
27 | #include "networkd-netdev-vlan.h" | |
28 | #include "networkd-netdev-macvlan.h" | |
29 | #include "networkd-netdev-vxlan.h" | |
30 | #include "networkd-netdev-tunnel.h" | |
31 | #include "networkd-netdev-veth.h" | |
32 | #include "networkd-netdev-dummy.h" | |
33 | #include "networkd-netdev-tuntap.h" | |
c6f7c917 | 34 | #include "network-internal.h" |
02b59d57 TG |
35 | #include "path-util.h" |
36 | #include "conf-files.h" | |
37 | #include "conf-parser.h" | |
38 | #include "list.h" | |
5c8f858d | 39 | #include "siphash24.h" |
02b59d57 | 40 | |
3be1d7e0 TG |
41 | const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX] = { |
42 | [NETDEV_KIND_BRIDGE] = &bridge_vtable, | |
43 | [NETDEV_KIND_BOND] = &bond_vtable, | |
44 | [NETDEV_KIND_VLAN] = &vlan_vtable, | |
45 | [NETDEV_KIND_MACVLAN] = &macvlan_vtable, | |
46 | [NETDEV_KIND_VXLAN] = &vxlan_vtable, | |
47 | [NETDEV_KIND_IPIP] = &ipip_vtable, | |
48 | [NETDEV_KIND_GRE] = &gre_vtable, | |
49 | [NETDEV_KIND_SIT] = &sit_vtable, | |
50 | [NETDEV_KIND_VTI] = &vti_vtable, | |
51 | [NETDEV_KIND_VETH] = &veth_vtable, | |
52 | [NETDEV_KIND_DUMMY] = &dummy_vtable, | |
53 | [NETDEV_KIND_TUN] = &tun_vtable, | |
54 | [NETDEV_KIND_TAP] = &tap_vtable, | |
55 | }; | |
56 | ||
2c5859af | 57 | static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = { |
52433f6b | 58 | [NETDEV_KIND_BRIDGE] = "bridge", |
54abf461 TG |
59 | [NETDEV_KIND_BOND] = "bond", |
60 | [NETDEV_KIND_VLAN] = "vlan", | |
fe6b2d55 | 61 | [NETDEV_KIND_MACVLAN] = "macvlan", |
326cb406 | 62 | [NETDEV_KIND_VXLAN] = "vxlan", |
7951dea2 SS |
63 | [NETDEV_KIND_IPIP] = "ipip", |
64 | [NETDEV_KIND_GRE] = "gre", | |
65 | [NETDEV_KIND_SIT] = "sit", | |
10142d75 | 66 | [NETDEV_KIND_VETH] = "veth", |
9e358851 TG |
67 | [NETDEV_KIND_VTI] = "vti", |
68 | [NETDEV_KIND_DUMMY] = "dummy", | |
30ae9dfd SS |
69 | [NETDEV_KIND_TUN] = "tun", |
70 | [NETDEV_KIND_TAP] = "tap", | |
52433f6b | 71 | }; |
02b59d57 | 72 | |
1a436809 TG |
73 | DEFINE_STRING_TABLE_LOOKUP(netdev_kind, NetDevKind); |
74 | DEFINE_CONFIG_PARSE_ENUM(config_parse_netdev_kind, netdev_kind, NetDevKind, "Failed to parse netdev kind"); | |
52433f6b | 75 | |
fe8ac65b | 76 | |
59cb64e6 TG |
77 | static void netdev_cancel_callbacks(NetDev *netdev) { |
78 | _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL; | |
3f265037 | 79 | netdev_join_callback *callback; |
52433f6b TG |
80 | |
81 | if (!netdev) | |
02b59d57 TG |
82 | return; |
83 | ||
59cb64e6 TG |
84 | rtnl_message_new_synthetic_error(-ENODEV, 0, &m); |
85 | ||
52433f6b | 86 | while ((callback = netdev->callbacks)) { |
59cb64e6 TG |
87 | if (m) { |
88 | assert(callback->link); | |
89 | assert(callback->callback); | |
90 | assert(netdev->manager); | |
91 | assert(netdev->manager->rtnl); | |
92 | ||
93 | callback->callback(netdev->manager->rtnl, m, link); | |
94 | } | |
95 | ||
52433f6b | 96 | LIST_REMOVE(callbacks, netdev->callbacks, callback); |
02b59d57 TG |
97 | free(callback); |
98 | } | |
59cb64e6 TG |
99 | } |
100 | ||
101 | static void netdev_free(NetDev *netdev) { | |
102 | if (!netdev) | |
103 | return; | |
104 | ||
105 | netdev_cancel_callbacks(netdev); | |
02b59d57 | 106 | |
af4e9e2c TG |
107 | if (netdev->ifname) |
108 | hashmap_remove(netdev->manager->netdevs, netdev->ifname); | |
02b59d57 | 109 | |
52433f6b | 110 | free(netdev->filename); |
02b59d57 | 111 | |
52433f6b | 112 | free(netdev->description); |
af4e9e2c | 113 | free(netdev->ifname); |
5a3f1989 | 114 | free(netdev->ifname_peer); |
96c90742 TG |
115 | free(netdev->mac); |
116 | free(netdev->mac_peer); | |
30ae9dfd SS |
117 | free(netdev->user_name); |
118 | free(netdev->group_name); | |
02b59d57 | 119 | |
79e16ce3 LP |
120 | condition_free_list(netdev->match_host); |
121 | condition_free_list(netdev->match_virt); | |
122 | condition_free_list(netdev->match_kernel); | |
123 | condition_free_list(netdev->match_arch); | |
124 | ||
52433f6b | 125 | free(netdev); |
02b59d57 TG |
126 | } |
127 | ||
14b746f7 TG |
128 | NetDev *netdev_unref(NetDev *netdev) { |
129 | if (netdev && (-- netdev->n_ref <= 0)) | |
130 | netdev_free(netdev); | |
131 | ||
132 | return NULL; | |
133 | } | |
134 | ||
135 | NetDev *netdev_ref(NetDev *netdev) { | |
136 | if (netdev) | |
137 | assert_se(++ netdev->n_ref >= 2); | |
138 | ||
139 | return netdev; | |
140 | } | |
141 | ||
2cc7e981 TG |
142 | void netdev_drop(NetDev *netdev) { |
143 | if (!netdev || netdev->state == NETDEV_STATE_LINGER) | |
144 | return; | |
145 | ||
146 | netdev->state = NETDEV_STATE_LINGER; | |
147 | ||
5e273efe | 148 | log_debug_netdev(netdev, "netdev removed"); |
370e9930 | 149 | |
2cc7e981 TG |
150 | netdev_cancel_callbacks(netdev); |
151 | ||
152 | netdev_unref(netdev); | |
153 | ||
154 | return; | |
155 | } | |
156 | ||
1a436809 TG |
157 | int netdev_get(Manager *manager, const char *name, NetDev **ret) { |
158 | NetDev *netdev; | |
02b59d57 TG |
159 | |
160 | assert(manager); | |
161 | assert(name); | |
162 | assert(ret); | |
163 | ||
52433f6b TG |
164 | netdev = hashmap_get(manager->netdevs, name); |
165 | if (!netdev) { | |
02b59d57 TG |
166 | *ret = NULL; |
167 | return -ENOENT; | |
168 | } | |
169 | ||
52433f6b | 170 | *ret = netdev; |
02b59d57 TG |
171 | |
172 | return 0; | |
173 | } | |
174 | ||
1a436809 | 175 | static int netdev_enter_failed(NetDev *netdev) { |
52433f6b | 176 | netdev->state = NETDEV_STATE_FAILED; |
02b59d57 TG |
177 | |
178 | return 0; | |
179 | } | |
180 | ||
1a436809 | 181 | static int netdev_enslave_ready(NetDev *netdev, Link* link, sd_rtnl_message_handler_t callback) { |
cf6a8911 | 182 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; |
02b59d57 TG |
183 | int r; |
184 | ||
52433f6b TG |
185 | assert(netdev); |
186 | assert(netdev->state == NETDEV_STATE_READY); | |
4fb7242c TG |
187 | assert(netdev->manager); |
188 | assert(netdev->manager->rtnl); | |
3f265037 | 189 | assert(IN_SET(netdev->kind, NETDEV_KIND_BRIDGE, NETDEV_KIND_BOND)); |
02b59d57 TG |
190 | assert(link); |
191 | assert(callback); | |
192 | ||
151b9b96 LP |
193 | r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, |
194 | RTM_SETLINK, link->ifindex); | |
02b59d57 | 195 | if (r < 0) { |
52433f6b | 196 | log_error_netdev(netdev, |
3333d748 ZJS |
197 | "Could not allocate RTM_SETLINK message: %s", |
198 | strerror(-r)); | |
02b59d57 TG |
199 | return r; |
200 | } | |
201 | ||
50add290 | 202 | r = sd_rtnl_message_append_u32(req, IFLA_MASTER, netdev->ifindex); |
02b59d57 | 203 | if (r < 0) { |
52433f6b | 204 | log_error_netdev(netdev, |
3333d748 ZJS |
205 | "Could not append IFLA_MASTER attribute: %s", |
206 | strerror(-r)); | |
02b59d57 TG |
207 | return r; |
208 | } | |
209 | ||
52433f6b | 210 | r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL); |
02b59d57 | 211 | if (r < 0) { |
52433f6b | 212 | log_error_netdev(netdev, |
3333d748 ZJS |
213 | "Could not send rtnetlink message: %s", |
214 | strerror(-r)); | |
02b59d57 TG |
215 | return r; |
216 | } | |
217 | ||
563c69c6 TG |
218 | link_ref(link); |
219 | ||
52433f6b | 220 | log_debug_netdev(netdev, "enslaving link '%s'", link->ifname); |
ab47d620 | 221 | |
02b59d57 TG |
222 | return 0; |
223 | } | |
224 | ||
1a436809 | 225 | static int netdev_enter_ready(NetDev *netdev) { |
3f265037 | 226 | netdev_join_callback *callback, *callback_next; |
ad0774e6 | 227 | int r; |
02b59d57 | 228 | |
52433f6b | 229 | assert(netdev); |
af4e9e2c | 230 | assert(netdev->ifname); |
924fe430 | 231 | |
ba5596ec TG |
232 | if (netdev->state != NETDEV_STATE_CREATING) |
233 | return 0; | |
234 | ||
52433f6b | 235 | netdev->state = NETDEV_STATE_READY; |
02b59d57 | 236 | |
52433f6b | 237 | log_info_netdev(netdev, "netdev ready"); |
02b59d57 | 238 | |
ad0774e6 | 239 | LIST_FOREACH_SAFE(callbacks, callback, callback_next, netdev->callbacks) { |
b226d99b | 240 | /* enslave the links that were attempted to be enslaved before the |
02b59d57 | 241 | * link was ready */ |
ad0774e6 TG |
242 | r = netdev_enslave_ready(netdev, callback->link, callback->callback); |
243 | if (r < 0) | |
244 | return r; | |
245 | ||
246 | LIST_REMOVE(callbacks, netdev->callbacks, callback); | |
247 | link_unref(callback->link); | |
248 | free(callback); | |
02b59d57 TG |
249 | } |
250 | ||
251 | return 0; | |
252 | } | |
8469c1d3 | 253 | |
d5b3d845 | 254 | /* callback for netdev's created without a backing Link */ |
52433f6b | 255 | static int netdev_create_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { |
8900367c | 256 | _cleanup_netdev_unref_ NetDev *netdev = userdata; |
172f6635 | 257 | int r; |
02b59d57 | 258 | |
52433f6b | 259 | assert(netdev->state != _NETDEV_STATE_INVALID); |
02b59d57 TG |
260 | |
261 | r = sd_rtnl_message_get_errno(m); | |
e09826dc | 262 | if (r == -EEXIST) |
505f8da7 TG |
263 | log_debug_netdev(netdev, "netdev exists, using existing"); |
264 | else if (r < 0) { | |
3d94b787 | 265 | log_warning_netdev(netdev, "netdev could not be created: %s", strerror(-r)); |
37ebeb77 | 266 | netdev_drop(netdev); |
dd3efc09 TG |
267 | |
268 | return 1; | |
02b59d57 TG |
269 | } |
270 | ||
dd3efc09 | 271 | return 1; |
02b59d57 TG |
272 | } |
273 | ||
3be1d7e0 | 274 | int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) { |
b226d99b TG |
275 | int r; |
276 | ||
3f265037 TG |
277 | assert(netdev); |
278 | assert(IN_SET(netdev->kind, NETDEV_KIND_BRIDGE, NETDEV_KIND_BOND)); | |
7951dea2 | 279 | |
52433f6b | 280 | if (netdev->state == NETDEV_STATE_READY) { |
b226d99b TG |
281 | r = netdev_enslave_ready(netdev, link, callback); |
282 | if (r < 0) | |
283 | return r; | |
02b59d57 | 284 | } else { |
52433f6b | 285 | /* the netdev is not yet read, save this request for when it is*/ |
3f265037 | 286 | netdev_join_callback *cb; |
02b59d57 | 287 | |
3f265037 | 288 | cb = new0(netdev_join_callback, 1); |
02b59d57 TG |
289 | if (!cb) |
290 | return log_oom(); | |
291 | ||
292 | cb->callback = callback; | |
293 | cb->link = link; | |
563c69c6 | 294 | link_ref(link); |
02b59d57 | 295 | |
52433f6b | 296 | LIST_PREPEND(callbacks, netdev->callbacks, cb); |
02b59d57 TG |
297 | } |
298 | ||
299 | return 0; | |
300 | } | |
301 | ||
3f265037 TG |
302 | /* the callback must be called, possibly after a timeout, as otherwise the Link will hang */ |
303 | int netdev_join(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) { | |
3be1d7e0 | 304 | int r; |
3f265037 TG |
305 | |
306 | assert(netdev); | |
3be1d7e0 TG |
307 | assert(netdev->manager); |
308 | assert(netdev->manager->rtnl); | |
309 | assert(NETDEV_VTABLE(netdev)); | |
3f265037 | 310 | |
3be1d7e0 TG |
311 | if (NETDEV_VTABLE(netdev)->fill_message_create_on_link) { |
312 | _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL; | |
313 | ||
314 | r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, | |
315 | RTM_NEWLINK, 0); | |
316 | if (r < 0) { | |
317 | log_error_netdev(netdev, | |
318 | "Could not allocate RTM_SETLINK message: %s", | |
319 | strerror(-r)); | |
320 | return r; | |
321 | } | |
322 | ||
323 | NETDEV_VTABLE(netdev)->fill_message_create_on_link(netdev, link, req); | |
324 | ||
325 | r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL); | |
326 | if (r < 0) { | |
327 | log_error_netdev(netdev, | |
328 | "Could not send rtnetlink message: %s", strerror(-r)); | |
329 | return r; | |
330 | } | |
331 | ||
332 | link_ref(link); | |
333 | } else if (NETDEV_VTABLE(netdev)->enslave) { | |
334 | return NETDEV_VTABLE(netdev)->enslave(netdev, link, callback); | |
335 | } else | |
336 | assert_not_reached("Joining link to netdev of invalid kind"); | |
3f265037 TG |
337 | |
338 | return 0; | |
339 | } | |
340 | ||
d39edfc7 | 341 | int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *message) { |
c3ebdce3 | 342 | uint16_t type; |
d39edfc7 TG |
343 | const char *kind; |
344 | char *received_kind; | |
c6315a7a | 345 | char *received_name; |
d39edfc7 TG |
346 | int r, ifindex; |
347 | ||
50add290 | 348 | assert(netdev); |
c3ebdce3 | 349 | assert(message); |
02b59d57 | 350 | |
c3ebdce3 | 351 | r = sd_rtnl_message_get_type(message, &type); |
ba5596ec TG |
352 | if (r < 0) { |
353 | log_error_netdev(netdev, "Could not get rtnl message type"); | |
c3ebdce3 | 354 | return r; |
ba5596ec | 355 | } |
c3ebdce3 | 356 | |
ba5596ec TG |
357 | if (type != RTM_NEWLINK) { |
358 | log_error_netdev(netdev, "Can not set ifindex from unexpected rtnl message type"); | |
c3ebdce3 | 359 | return -EINVAL; |
ba5596ec | 360 | } |
d39edfc7 | 361 | |
a21df104 TG |
362 | r = sd_rtnl_message_link_get_ifindex(message, &ifindex); |
363 | if (r < 0) { | |
364 | log_error_netdev(netdev, "Could not get ifindex: %s", strerror(-r)); | |
365 | netdev_enter_failed(netdev); | |
366 | return r; | |
367 | } else if (ifindex <= 0) { | |
368 | log_error_netdev(netdev, "Got invalid ifindex: %d", ifindex); | |
369 | netdev_enter_failed(netdev); | |
370 | return r; | |
371 | } | |
372 | ||
a21df104 TG |
373 | if (netdev->ifindex > 0) { |
374 | if (netdev->ifindex != ifindex) { | |
375 | log_error_netdev(netdev, "Could not set ifindex to %d, already set to %d", | |
376 | ifindex, netdev->ifindex); | |
377 | netdev_enter_failed(netdev); | |
378 | return -EEXIST; | |
379 | } else | |
380 | /* ifindex already set to the same for this netdev */ | |
381 | return 0; | |
382 | } | |
383 | ||
c6315a7a TG |
384 | r = sd_rtnl_message_read_string(message, IFLA_IFNAME, &received_name); |
385 | if (r < 0) { | |
386 | log_error_netdev(netdev, "Could not get IFNAME"); | |
387 | return r; | |
388 | } | |
389 | ||
af4e9e2c | 390 | if (!streq(netdev->ifname, received_name)) { |
c6315a7a TG |
391 | log_error_netdev(netdev, "Received newlink with wrong IFNAME %s", |
392 | received_name); | |
393 | netdev_enter_failed(netdev); | |
394 | return r; | |
395 | } | |
396 | ||
d39edfc7 TG |
397 | r = sd_rtnl_message_enter_container(message, IFLA_LINKINFO); |
398 | if (r < 0) { | |
399 | log_error_netdev(netdev, "Could not get LINKINFO"); | |
400 | return r; | |
401 | } | |
402 | ||
403 | r = sd_rtnl_message_read_string(message, IFLA_INFO_KIND, &received_kind); | |
404 | if (r < 0) { | |
405 | log_error_netdev(netdev, "Could not get KIND"); | |
406 | return r; | |
407 | } | |
408 | ||
505f8da7 TG |
409 | r = sd_rtnl_message_exit_container(message); |
410 | if (r < 0) { | |
411 | log_error_netdev(netdev, "Could not exit container"); | |
412 | return r; | |
413 | } | |
414 | ||
30ae9dfd SS |
415 | if (netdev->kind == NETDEV_KIND_TAP) |
416 | /* the kernel does not distinguish between tun and tap */ | |
417 | kind = "tun"; | |
418 | else { | |
419 | kind = netdev_kind_to_string(netdev->kind); | |
420 | if (!kind) { | |
421 | log_error_netdev(netdev, "Could not get kind"); | |
422 | netdev_enter_failed(netdev); | |
423 | return -EINVAL; | |
424 | } | |
c3ebdce3 TG |
425 | } |
426 | ||
d39edfc7 | 427 | if (!streq(kind, received_kind)) { |
30ae9dfd SS |
428 | log_error_netdev(netdev, |
429 | "Received newlink with wrong KIND %s, " | |
c6315a7a | 430 | "expected %s", received_kind, kind); |
d39edfc7 TG |
431 | netdev_enter_failed(netdev); |
432 | return r; | |
433 | } | |
434 | ||
50add290 | 435 | netdev->ifindex = ifindex; |
52433f6b | 436 | |
5261692f TG |
437 | log_debug_netdev(netdev, "netdev has index %d", netdev->ifindex); |
438 | ||
52433f6b | 439 | netdev_enter_ready(netdev); |
02b59d57 TG |
440 | |
441 | return 0; | |
442 | } | |
443 | ||
5c8f858d TG |
444 | #define HASH_KEY SD_ID128_MAKE(52,e1,45,bd,00,6f,29,96,21,c6,30,6d,83,71,04,48) |
445 | ||
3be1d7e0 | 446 | int netdev_get_mac(const char *ifname, struct ether_addr **ret) { |
5c8f858d TG |
447 | _cleanup_free_ struct ether_addr *mac = NULL; |
448 | uint8_t result[8]; | |
449 | size_t l, sz; | |
450 | uint8_t *v; | |
451 | int r; | |
452 | ||
453 | assert(ifname); | |
454 | assert(ret); | |
455 | ||
456 | mac = new0(struct ether_addr, 1); | |
457 | if (!mac) | |
458 | return -ENOMEM; | |
459 | ||
460 | l = strlen(ifname); | |
461 | sz = sizeof(sd_id128_t) + l; | |
462 | v = alloca(sz); | |
463 | ||
464 | /* fetch some persistent data unique to the machine */ | |
465 | r = sd_id128_get_machine((sd_id128_t*) v); | |
466 | if (r < 0) | |
467 | return r; | |
468 | ||
469 | /* combine with some data unique (on this machine) to this | |
470 | * netdev */ | |
471 | memcpy(v + sizeof(sd_id128_t), ifname, l); | |
472 | ||
473 | /* Let's hash the host machine ID plus the container name. We | |
474 | * use a fixed, but originally randomly created hash key here. */ | |
475 | siphash24(result, v, sz, HASH_KEY.bytes); | |
476 | ||
477 | assert_cc(ETH_ALEN <= sizeof(result)); | |
478 | memcpy(mac->ether_addr_octet, result, ETH_ALEN); | |
479 | ||
480 | /* see eth_random_addr in the kernel */ | |
481 | mac->ether_addr_octet[0] &= 0xfe; /* clear multicast bit */ | |
482 | mac->ether_addr_octet[0] |= 0x02; /* set local assignment bit (IEEE802) */ | |
483 | ||
484 | *ret = mac; | |
485 | mac = NULL; | |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
52433f6b | 490 | static int netdev_load_one(Manager *manager, const char *filename) { |
14b746f7 | 491 | _cleanup_netdev_unref_ NetDev *netdev = NULL; |
02b59d57 TG |
492 | _cleanup_fclose_ FILE *file = NULL; |
493 | int r; | |
494 | ||
bf1bc670 TA |
495 | assert(manager); |
496 | assert(filename); | |
497 | ||
6916ec29 TG |
498 | if (null_or_empty_path(filename)) { |
499 | log_debug("skipping empty file: %s", filename); | |
500 | return 0; | |
501 | } | |
502 | ||
02b59d57 TG |
503 | file = fopen(filename, "re"); |
504 | if (!file) { | |
505 | if (errno == ENOENT) | |
506 | return 0; | |
507 | else | |
ecb08ec6 | 508 | return -errno; |
02b59d57 TG |
509 | } |
510 | ||
1a436809 | 511 | netdev = new0(NetDev, 1); |
52433f6b | 512 | if (!netdev) |
02b59d57 TG |
513 | return log_oom(); |
514 | ||
14b746f7 | 515 | netdev->n_ref = 1; |
52433f6b TG |
516 | netdev->manager = manager; |
517 | netdev->state = _NETDEV_STATE_INVALID; | |
518 | netdev->kind = _NETDEV_KIND_INVALID; | |
fe6b2d55 | 519 | netdev->macvlan_mode = _NETDEV_MACVLAN_MODE_INVALID; |
fe8ac65b | 520 | netdev->bond_mode = _NETDEV_BOND_MODE_INVALID; |
672682a6 | 521 | netdev->vlanid = VLANID_MAX + 1; |
326cb406 | 522 | netdev->vxlanid = VXLAN_VID_MAX + 1; |
a9f434cf | 523 | netdev->tunnel_pmtudisc = true; |
326cb406 | 524 | netdev->learning = true; |
02b59d57 | 525 | |
326cb406 | 526 | r = config_parse(NULL, filename, file, |
fe8ac65b | 527 | "Match\0NetDev\0VLAN\0MACVLAN\0VXLAN\0Tunnel\0Peer\0Tun\0Tap\0Bond\0", |
e9f3d2d5 | 528 | config_item_perf_lookup, network_netdev_gperf_lookup, |
fe6b2d55 | 529 | false, false, netdev); |
02b59d57 TG |
530 | if (r < 0) { |
531 | log_warning("Could not parse config file %s: %s", filename, strerror(-r)); | |
532 | return r; | |
449f7554 | 533 | } |
02b59d57 | 534 | |
2023dc8a TG |
535 | /* skip out early if configuration does not match the environment */ |
536 | if (net_match_config(NULL, NULL, NULL, NULL, NULL, | |
537 | netdev->match_host, netdev->match_virt, | |
538 | netdev->match_kernel, netdev->match_arch, | |
539 | NULL, NULL, NULL, NULL, NULL, NULL) <= 0) | |
540 | return 0; | |
541 | ||
3be1d7e0 TG |
542 | if (!NETDEV_VTABLE(netdev)) { |
543 | log_warning("NetDev with invalid Kind configured in %s. Igonring", filename); | |
52433f6b | 544 | return 0; |
3be1d7e0 | 545 | } |
2023dc8a | 546 | |
3be1d7e0 TG |
547 | /* verify configuration */ |
548 | if (NETDEV_VTABLE(netdev)->config_verify) { | |
549 | r = NETDEV_VTABLE(netdev)->config_verify(netdev, filename); | |
550 | if (r < 0) | |
2023dc8a | 551 | return 0; |
52433f6b TG |
552 | } |
553 | ||
af4e9e2c | 554 | if (!netdev->ifname) { |
1a436809 | 555 | log_warning("NetDev without Name configured in %s. Ignoring", filename); |
326cb406 SS |
556 | return 0; |
557 | } | |
558 | ||
fe6b2d55 TG |
559 | if (netdev->kind != NETDEV_KIND_VLAN && netdev->vlanid <= VLANID_MAX) { |
560 | log_warning("VLAN Id configured for a %s in %s. Ignoring", | |
561 | netdev_kind_to_string(netdev->kind), filename); | |
562 | return 0; | |
563 | } | |
564 | ||
ee6b5089 TG |
565 | if (netdev->kind != NETDEV_KIND_VXLAN && netdev->vxlanid <= VXLAN_VID_MAX) { |
566 | log_warning("VXLAN Id configured for a %s in %s. Ignoring", | |
326cb406 SS |
567 | netdev_kind_to_string(netdev->kind), filename); |
568 | return 0; | |
569 | } | |
570 | ||
fe6b2d55 TG |
571 | if (netdev->kind != NETDEV_KIND_MACVLAN && |
572 | netdev->macvlan_mode != _NETDEV_MACVLAN_MODE_INVALID) { | |
573 | log_warning("MACVLAN Mode configured for a %s in %s. Ignoring", | |
574 | netdev_kind_to_string(netdev->kind), filename); | |
575 | return 0; | |
576 | } | |
577 | ||
52433f6b TG |
578 | netdev->filename = strdup(filename); |
579 | if (!netdev->filename) | |
02b59d57 TG |
580 | return log_oom(); |
581 | ||
5c8f858d TG |
582 | if (!netdev->mac) { |
583 | r = netdev_get_mac(netdev->ifname, &netdev->mac); | |
584 | if (r < 0) { | |
585 | log_error("Failed to generate predictable MAC address for %s", | |
586 | netdev->ifname); | |
587 | return r; | |
588 | } | |
589 | } | |
590 | ||
af4e9e2c | 591 | r = hashmap_put(netdev->manager->netdevs, netdev->ifname, netdev); |
02b59d57 TG |
592 | if (r < 0) |
593 | return r; | |
594 | ||
52433f6b | 595 | LIST_HEAD_INIT(netdev->callbacks); |
02b59d57 | 596 | |
3be1d7e0 TG |
597 | log_debug_netdev(netdev, "loaded %s", netdev_kind_to_string(netdev->kind)); |
598 | ||
2023dc8a | 599 | /* create netdev */ |
3be1d7e0 TG |
600 | if (NETDEV_VTABLE(netdev)->fill_message_create) { |
601 | _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL; | |
602 | ||
603 | r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0); | |
604 | if (r < 0) { | |
605 | log_error_netdev(netdev, | |
606 | "Could not allocate RTM_NEWLINK message: %s", | |
607 | strerror(-r)); | |
6278a201 | 608 | return r; |
3be1d7e0 | 609 | } |
10142d75 | 610 | |
3be1d7e0 | 611 | r = NETDEV_VTABLE(netdev)->fill_message_create(netdev, m); |
9e358851 TG |
612 | if (r < 0) |
613 | return r; | |
614 | ||
3be1d7e0 TG |
615 | r = sd_rtnl_call_async(netdev->manager->rtnl, m, netdev_create_handler, netdev, 0, NULL); |
616 | if (r < 0) { | |
617 | log_error_netdev(netdev, | |
618 | "Could not send rtnetlink message: %s", strerror(-r)); | |
54abf461 | 619 | return r; |
3be1d7e0 TG |
620 | } |
621 | ||
622 | netdev_ref(netdev); | |
623 | ||
624 | log_debug_netdev(netdev, "creating"); | |
625 | ||
626 | netdev->state = NETDEV_STATE_CREATING; | |
627 | } else if (NETDEV_VTABLE(netdev)->create) { | |
628 | r = NETDEV_VTABLE(netdev)->create(netdev); | |
30ae9dfd SS |
629 | if (r < 0) |
630 | return r; | |
54abf461 | 631 | } |
02b59d57 | 632 | |
52433f6b | 633 | netdev = NULL; |
02b59d57 TG |
634 | |
635 | return 0; | |
636 | } | |
637 | ||
52433f6b | 638 | int netdev_load(Manager *manager) { |
1a436809 | 639 | NetDev *netdev; |
02b59d57 TG |
640 | char **files, **f; |
641 | int r; | |
642 | ||
643 | assert(manager); | |
644 | ||
52433f6b | 645 | while ((netdev = hashmap_first(manager->netdevs))) |
14b746f7 | 646 | netdev_unref(netdev); |
02b59d57 | 647 | |
2ad8416d | 648 | r = conf_files_list_strv(&files, ".netdev", NULL, network_dirs); |
02b59d57 TG |
649 | if (r < 0) { |
650 | log_error("Failed to enumerate netdev files: %s", strerror(-r)); | |
651 | return r; | |
652 | } | |
653 | ||
654 | STRV_FOREACH_BACKWARDS(f, files) { | |
52433f6b | 655 | r = netdev_load_one(manager, *f); |
02b59d57 TG |
656 | if (r < 0) |
657 | return r; | |
658 | } | |
659 | ||
660 | strv_free(files); | |
661 | ||
662 | return 0; | |
663 | } |