1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2013 Tom Gundersen <teg@jklm.no>
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.
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.
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/>.
23 #include "network-internal.h"
24 #include "path-util.h"
25 #include "conf-files.h"
26 #include "conf-parser.h"
29 #define VLANID_MAX 4094
31 static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {
32 [NETDEV_KIND_BRIDGE] = "bridge",
33 [NETDEV_KIND_BOND] = "bond",
34 [NETDEV_KIND_VLAN] = "vlan",
35 [NETDEV_KIND_MACVLAN] = "macvlan",
38 DEFINE_STRING_TABLE_LOOKUP(netdev_kind, NetDevKind);
39 DEFINE_CONFIG_PARSE_ENUM(config_parse_netdev_kind, netdev_kind, NetDevKind, "Failed to parse netdev kind");
41 static const char* const macvlan_mode_table[_NETDEV_MACVLAN_MODE_MAX] = {
42 [NETDEV_MACVLAN_MODE_PRIVATE] = "private",
43 [NETDEV_MACVLAN_MODE_VEPA] = "vepa",
44 [NETDEV_MACVLAN_MODE_BRIDGE] = "bridge",
45 [NETDEV_MACVLAN_MODE_PASSTHRU] = "passthru",
48 DEFINE_STRING_TABLE_LOOKUP(macvlan_mode, MacVlanMode);
49 DEFINE_CONFIG_PARSE_ENUM(config_parse_macvlan_mode, macvlan_mode, MacVlanMode, "Failed to parse macvlan mode");
51 void netdev_free(NetDev *netdev) {
52 netdev_enslave_callback *callback;
57 while ((callback = netdev->callbacks)) {
58 LIST_REMOVE(callbacks, netdev->callbacks, callback);
63 hashmap_remove(netdev->manager->netdevs, netdev->name);
65 free(netdev->filename);
67 free(netdev->description);
70 condition_free_list(netdev->match_host);
71 condition_free_list(netdev->match_virt);
72 condition_free_list(netdev->match_kernel);
73 condition_free_list(netdev->match_arch);
78 int netdev_get(Manager *manager, const char *name, NetDev **ret) {
85 netdev = hashmap_get(manager->netdevs, name);
96 static int netdev_enter_failed(NetDev *netdev) {
97 netdev->state = NETDEV_STATE_FAILED;
102 static int netdev_enslave_ready(NetDev *netdev, Link* link, sd_rtnl_message_handler_t callback) {
103 _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
107 assert(netdev->state == NETDEV_STATE_READY);
108 assert(netdev->manager);
109 assert(netdev->manager->rtnl);
113 r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req,
114 RTM_SETLINK, link->ifindex);
116 log_error_netdev(netdev,
117 "Could not allocate RTM_SETLINK message: %s",
122 r = sd_rtnl_message_append_u32(req, IFLA_MASTER, netdev->ifindex);
124 log_error_netdev(netdev,
125 "Could not append IFLA_MASTER attribute: %s",
130 r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL);
132 log_error_netdev(netdev,
133 "Could not send rtnetlink message: %s",
138 log_debug_netdev(netdev, "enslaving link '%s'", link->ifname);
143 static int netdev_enter_ready(NetDev *netdev) {
144 netdev_enslave_callback *callback;
147 assert(netdev->name);
149 netdev->state = NETDEV_STATE_READY;
151 log_info_netdev(netdev, "netdev ready");
153 LIST_FOREACH(callbacks, callback, netdev->callbacks) {
154 /* enslave the links that were attempted to be enslaved befor the
156 netdev_enslave_ready(netdev, callback->link, callback->callback);
162 static int netdev_getlink_handler(sd_rtnl *rtnl, sd_rtnl_message *m,
164 NetDev *netdev = userdata;
169 if (netdev->state == NETDEV_STATE_FAILED)
172 r = sd_rtnl_message_get_errno(m);
174 log_struct_netdev(LOG_ERR, netdev,
175 "MESSAGE=%s: could not get link: %s",
176 netdev->name, strerror(-r),
182 netdev_set_ifindex(netdev, m);
187 static int netdev_getlink(NetDev *netdev) {
188 _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
191 assert(netdev->manager);
192 assert(netdev->manager->rtnl);
193 assert(netdev->name);
195 log_debug_netdev(netdev, "requesting netdev status");
197 r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req,
200 log_error_netdev(netdev, "Could not allocate RTM_GETLINK message");
204 r = sd_rtnl_message_append_string(req, IFLA_IFNAME, netdev->name);
206 log_error_netdev(netdev, "Colud not append ifname to message: %s",
211 r = sd_rtnl_call_async(netdev->manager->rtnl, req, netdev_getlink_handler,
214 log_error_netdev(netdev,
215 "Could not send rtnetlink message: %s", strerror(-r));
222 static int netdev_create_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
223 NetDev *netdev = userdata;
226 assert(netdev->state != _NETDEV_STATE_INVALID);
228 r = sd_rtnl_message_get_errno(m);
230 r = netdev_getlink(netdev);
233 log_warning_netdev(netdev, "netdev failed: %s", strerror(-r));
234 netdev_enter_failed(netdev);
242 static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
243 _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
248 assert(!(netdev->kind == NETDEV_KIND_VLAN || netdev->kind == NETDEV_KIND_MACVLAN) ||
250 assert(netdev->name);
251 assert(netdev->manager);
252 assert(netdev->manager->rtnl);
254 r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, 0);
256 log_error_netdev(netdev,
257 "Could not allocate RTM_NEWLINK message: %s",
263 r = sd_rtnl_message_append_u32(req, IFLA_LINK, link->ifindex);
265 log_error_netdev(netdev,
266 "Could not append IFLA_LINK attribute: %s",
272 r = sd_rtnl_message_append_string(req, IFLA_IFNAME, netdev->name);
274 log_error_netdev(netdev,
275 "Could not append IFLA_IFNAME attribute: %s",
280 r = sd_rtnl_message_open_container(req, IFLA_LINKINFO);
282 log_error_netdev(netdev,
283 "Could not open IFLA_LINKINFO container: %s",
288 kind = netdev_kind_to_string(netdev->kind);
290 log_error_netdev(netdev, "Invalid kind");
294 r = sd_rtnl_message_open_container_union(req, IFLA_INFO_DATA, kind);
296 log_error_netdev(netdev,
297 "Could not open IFLA_INFO_DATA container: %s",
302 if (netdev->vlanid <= VLANID_MAX) {
303 r = sd_rtnl_message_append_u16(req, IFLA_VLAN_ID, netdev->vlanid);
305 log_error_netdev(netdev,
306 "Could not append IFLA_VLAN_ID attribute: %s",
312 if (netdev->macvlan_mode != _NETDEV_MACVLAN_MODE_INVALID) {
313 r = sd_rtnl_message_append_u32(req, IFLA_MACVLAN_MODE, netdev->macvlan_mode);
315 log_error_netdev(netdev,
316 "Could not append IFLA_MACVLAN_MODE attribute: %s",
322 r = sd_rtnl_message_close_container(req);
324 log_error_netdev(netdev,
325 "Could not close IFLA_INFO_DATA container %s",
330 r = sd_rtnl_message_close_container(req);
332 log_error_netdev(netdev,
333 "Could not close IFLA_LINKINFO container %s",
339 r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL);
341 r = sd_rtnl_call_async(netdev->manager->rtnl, req, &netdev_create_handler, netdev, 0, NULL);
343 log_error_netdev(netdev,
344 "Could not send rtnetlink message: %s", strerror(-r));
348 log_debug_netdev(netdev, "creating netdev");
350 netdev->state = NETDEV_STATE_CREATING;
355 int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
356 if (netdev->kind == NETDEV_KIND_VLAN || netdev->kind == NETDEV_KIND_MACVLAN)
357 return netdev_create(netdev, link, callback);
359 if (netdev->state == NETDEV_STATE_READY) {
360 netdev_enslave_ready(netdev, link, callback);
362 /* the netdev is not yet read, save this request for when it is*/
363 netdev_enslave_callback *cb;
365 cb = new0(netdev_enslave_callback, 1);
369 cb->callback = callback;
372 LIST_PREPEND(callbacks, netdev->callbacks, cb);
378 int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *message) {
387 r = sd_rtnl_message_get_type(message, &type);
391 if (type != RTM_NEWLINK)
394 r = sd_rtnl_message_enter_container(message, IFLA_LINKINFO);
396 log_error_netdev(netdev, "Could not get LINKINFO");
400 r = sd_rtnl_message_read_string(message, IFLA_INFO_KIND, &received_kind);
402 log_error_netdev(netdev, "Could not get KIND");
406 kind = netdev_kind_to_string(netdev->kind);
408 log_error_netdev(netdev, "Could not get kind");
409 netdev_enter_failed(netdev);
413 if (!streq(kind, received_kind)) {
414 log_error_netdev(netdev, "Received newlink with wrong KIND");
415 netdev_enter_failed(netdev);
419 r = sd_rtnl_message_link_get_ifindex(message, &ifindex);
421 log_error_netdev(netdev, "Could not get ifindex: %s", strerror(-r));
422 netdev_enter_failed(netdev);
424 } else if (ifindex <= 0) {
425 log_error_netdev(netdev, "Got invalid ifindex: %d", ifindex);
426 netdev_enter_failed(netdev);
430 if (netdev->ifindex > 0) {
431 if (netdev->ifindex == ifindex)
437 netdev->ifindex = ifindex;
439 netdev_enter_ready(netdev);
444 static int netdev_load_one(Manager *manager, const char *filename) {
445 _cleanup_netdev_free_ NetDev *netdev = NULL;
446 _cleanup_fclose_ FILE *file = NULL;
452 file = fopen(filename, "re");
460 netdev = new0(NetDev, 1);
464 netdev->manager = manager;
465 netdev->state = _NETDEV_STATE_INVALID;
466 netdev->kind = _NETDEV_KIND_INVALID;
467 netdev->macvlan_mode = _NETDEV_MACVLAN_MODE_INVALID;
468 netdev->vlanid = VLANID_MAX + 1;
470 r = config_parse(NULL, filename, file, "Match\0NetDev\0VLAN\0MACVLAN\0",
471 config_item_perf_lookup, (void*) network_netdev_gperf_lookup,
472 false, false, netdev);
474 log_warning("Could not parse config file %s: %s", filename, strerror(-r));
478 if (netdev->kind == _NETDEV_KIND_INVALID) {
479 log_warning("NetDev without Kind configured in %s. Ignoring", filename);
484 log_warning("NetDev without Name configured in %s. Ignoring", filename);
488 if (netdev->kind == NETDEV_KIND_VLAN && netdev->vlanid > VLANID_MAX) {
489 log_warning("VLAN without valid Id configured in %s. Ignoring", filename);
493 if (netdev->kind != NETDEV_KIND_VLAN && netdev->vlanid <= VLANID_MAX) {
494 log_warning("VLAN Id configured for a %s in %s. Ignoring",
495 netdev_kind_to_string(netdev->kind), filename);
499 if (netdev->kind != NETDEV_KIND_MACVLAN &&
500 netdev->macvlan_mode != _NETDEV_MACVLAN_MODE_INVALID) {
501 log_warning("MACVLAN Mode configured for a %s in %s. Ignoring",
502 netdev_kind_to_string(netdev->kind), filename);
506 netdev->filename = strdup(filename);
507 if (!netdev->filename)
510 if (net_match_config(NULL, NULL, NULL, NULL, NULL,
511 netdev->match_host, netdev->match_virt,
512 netdev->match_kernel, netdev->match_arch,
513 NULL, NULL, NULL, NULL, NULL, NULL) <= 0)
516 r = hashmap_put(netdev->manager->netdevs, netdev->name, netdev);
520 LIST_HEAD_INIT(netdev->callbacks);
522 if (netdev->kind != NETDEV_KIND_VLAN &&
523 netdev->kind != NETDEV_KIND_MACVLAN) {
524 r = netdev_create(netdev, NULL, NULL);
534 int netdev_load(Manager *manager) {
541 while ((netdev = hashmap_first(manager->netdevs)))
544 r = conf_files_list_strv(&files, ".netdev", NULL, network_dirs);
546 log_error("Failed to enumerate netdev files: %s", strerror(-r));
550 STRV_FOREACH_BACKWARDS(f, files) {
551 r = netdev_load_one(manager, *f);