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/>.
24 #include "path-util.h"
25 #include "conf-files.h"
26 #include "conf-parser.h"
29 static const char* const netdev_kind_table[] = {
30 [NETDEV_KIND_BRIDGE] = "bridge",
31 [NETDEV_KIND_BOND] = "bond",
32 [NETDEV_KIND_VLAN] = "vlan",
35 DEFINE_STRING_TABLE_LOOKUP(netdev_kind, NetDevKind);
36 DEFINE_CONFIG_PARSE_ENUM(config_parse_netdev_kind, netdev_kind, NetDevKind, "Failed to parse netdev kind");
38 void netdev_free(NetDev *netdev) {
39 netdev_enslave_callback *callback;
44 while ((callback = netdev->callbacks)) {
45 LIST_REMOVE(callbacks, netdev->callbacks, callback);
50 hashmap_remove(netdev->manager->netdevs, netdev->name);
52 free(netdev->filename);
54 free(netdev->description);
60 int netdev_get(Manager *manager, const char *name, NetDev **ret) {
67 netdev = hashmap_get(manager->netdevs, name);
78 static int netdev_enter_failed(NetDev *netdev) {
79 netdev->state = NETDEV_STATE_FAILED;
84 static int netdev_enslave_ready(NetDev *netdev, Link* link, sd_rtnl_message_handler_t callback) {
85 _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
89 assert(netdev->state == NETDEV_STATE_READY);
93 r = sd_rtnl_message_link_new(RTM_SETLINK, link->ifindex, &req);
95 log_error_netdev(netdev,
96 "Could not allocate RTM_SETLINK message: %s",
101 r = sd_rtnl_message_append_u32(req, IFLA_MASTER, netdev->ifindex);
103 log_error_netdev(netdev,
104 "Could not append IFLA_MASTER attribute: %s",
109 r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL);
111 log_error_netdev(netdev,
112 "Could not send rtnetlink message: %s",
117 log_debug_netdev(netdev, "enslaving link '%s'", link->ifname);
122 static int netdev_enter_ready(NetDev *netdev) {
123 netdev_enslave_callback *callback;
126 assert(netdev->name);
128 netdev->state = NETDEV_STATE_READY;
130 log_info_netdev(netdev, "netdev ready");
132 LIST_FOREACH(callbacks, callback, netdev->callbacks) {
133 /* enslave the links that were attempted to be enslaved befor the
135 netdev_enslave_ready(netdev, callback->link, callback->callback);
141 static int netdev_create_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
142 NetDev *netdev = userdata;
145 assert(netdev->state != _NETDEV_STATE_INVALID);
147 r = sd_rtnl_message_get_errno(m);
149 log_warning_netdev(netdev, "netdev failed: %s", strerror(-r));
150 netdev_enter_failed(netdev);
158 static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
159 _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
164 assert(!(netdev->kind == NETDEV_KIND_VLAN) || (link && callback && netdev->vlanid >= 0));
165 assert(netdev->name);
166 assert(netdev->manager);
167 assert(netdev->manager->rtnl);
169 r = sd_rtnl_message_link_new(RTM_NEWLINK, 0, &req);
171 log_error_netdev(netdev,
172 "Could not allocate RTM_NEWLINK message: %s",
178 r = sd_rtnl_message_append_u32(req, IFLA_LINK, link->ifindex);
180 log_error_netdev(netdev,
181 "Could not append IFLA_LINK attribute: %s",
187 r = sd_rtnl_message_append_string(req, IFLA_IFNAME, netdev->name);
189 log_error_netdev(netdev,
190 "Could not append IFLA_IFNAME attribute: %s",
195 r = sd_rtnl_message_open_container(req, IFLA_LINKINFO);
197 log_error_netdev(netdev,
198 "Could not open IFLA_LINKINFO container: %s",
203 kind = netdev_kind_to_string(netdev->kind);
205 log_error_netdev(netdev, "Invalid kind");
209 r = sd_rtnl_message_append_string(req, IFLA_INFO_KIND, kind);
211 log_error_netdev(netdev,
212 "Could not append IFLA_INFO_KIND attribute: %s",
217 if (netdev->vlanid >= 0) {
218 r = sd_rtnl_message_open_container(req, IFLA_INFO_DATA);
220 log_error_netdev(netdev,
221 "Could not open IFLA_INFO_DATA container: %s",
226 r = sd_rtnl_message_append_u16(req, IFLA_VLAN_ID, netdev->vlanid);
228 log_error_netdev(netdev,
229 "Could not append IFLA_VLAN_ID attribute: %s",
234 r = sd_rtnl_message_close_container(req);
236 log_error_netdev(netdev,
237 "Could not close IFLA_INFO_DATA container %s",
243 r = sd_rtnl_message_close_container(req);
245 log_error_netdev(netdev,
246 "Could not close IFLA_LINKINFO container %s",
252 r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL);
254 r = sd_rtnl_call_async(netdev->manager->rtnl, req, &netdev_create_handler, netdev, 0, NULL);
256 log_error_netdev(netdev,
257 "Could not send rtnetlink message: %s", strerror(-r));
261 log_debug_netdev(netdev, "creating netdev");
263 netdev->state = NETDEV_STATE_CREATING;
268 int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
269 if (netdev->kind == NETDEV_KIND_VLAN)
270 return netdev_create(netdev, link, callback);
272 if (netdev->state == NETDEV_STATE_READY) {
273 netdev_enslave_ready(netdev, link, callback);
275 /* the netdev is not yet read, save this request for when it is*/
276 netdev_enslave_callback *cb;
278 cb = new0(netdev_enslave_callback, 1);
282 cb->callback = callback;
285 LIST_PREPEND(callbacks, netdev->callbacks, cb);
291 int netdev_set_ifindex(NetDev *netdev, int ifindex) {
295 if (netdev->ifindex > 0) {
296 if (netdev->ifindex == ifindex)
302 netdev->ifindex = ifindex;
304 netdev_enter_ready(netdev);
309 static int netdev_load_one(Manager *manager, const char *filename) {
310 _cleanup_netdev_free_ NetDev *netdev = NULL;
311 _cleanup_fclose_ FILE *file = NULL;
317 file = fopen(filename, "re");
325 netdev = new0(NetDev, 1);
329 netdev->manager = manager;
330 netdev->state = _NETDEV_STATE_INVALID;
331 netdev->kind = _NETDEV_KIND_INVALID;
334 r = config_parse(NULL, filename, file, "NetDev\0VLAN\0", config_item_perf_lookup,
335 (void*) network_gperf_lookup, false, false, netdev);
337 log_warning("Could not parse config file %s: %s", filename, strerror(-r));
341 if (netdev->kind == _NETDEV_KIND_INVALID) {
342 log_warning("NetDev without Kind configured in %s. Ignoring", filename);
347 log_warning("NetDev without Name configured in %s. Ignoring", filename);
351 if (netdev->kind == NETDEV_KIND_VLAN && netdev->vlanid < 0) {
352 log_warning("VLAN without Id configured in %s. Ignoring", filename);
356 netdev->filename = strdup(filename);
357 if (!netdev->filename)
360 r = hashmap_put(netdev->manager->netdevs, netdev->name, netdev);
364 LIST_HEAD_INIT(netdev->callbacks);
366 if (netdev->kind != NETDEV_KIND_VLAN) {
367 r = netdev_create(netdev, NULL, NULL);
377 int netdev_load(Manager *manager) {
384 while ((netdev = hashmap_first(manager->netdevs)))
387 r = conf_files_list_strv(&files, ".netdev", NULL, network_dirs);
389 log_error("Failed to enumerate netdev files: %s", strerror(-r));
393 STRV_FOREACH_BACKWARDS(f, files) {
394 r = netdev_load_one(manager, *f);