2013-11-24 23:37:56 +01:00
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Tom Gundersen <teg@jklm.no>
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include "networkd.h"
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#include "net-util.h"
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#include "path-util.h"
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#include "conf-files.h"
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#include "conf-parser.h"
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#include "list.h"
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2014-02-10 18:41:54 +01:00
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#define VLANID_MAX 4094
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2014-01-21 21:58:08 +01:00
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static const char* const netdev_kind_table[] = {
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[NETDEV_KIND_BRIDGE] = "bridge",
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2014-01-22 14:49:24 +01:00
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[NETDEV_KIND_BOND] = "bond",
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[NETDEV_KIND_VLAN] = "vlan",
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2014-01-21 21:58:08 +01:00
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};
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2013-11-24 23:37:56 +01:00
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2014-02-07 17:03:23 +01:00
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DEFINE_STRING_TABLE_LOOKUP(netdev_kind, NetDevKind);
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DEFINE_CONFIG_PARSE_ENUM(config_parse_netdev_kind, netdev_kind, NetDevKind, "Failed to parse netdev kind");
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2014-01-21 21:58:08 +01:00
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2014-02-07 17:03:23 +01:00
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void netdev_free(NetDev *netdev) {
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2014-01-21 21:58:08 +01:00
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netdev_enslave_callback *callback;
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if (!netdev)
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2013-11-24 23:37:56 +01:00
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return;
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2014-01-21 21:58:08 +01:00
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while ((callback = netdev->callbacks)) {
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LIST_REMOVE(callbacks, netdev->callbacks, callback);
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2013-11-24 23:37:56 +01:00
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free(callback);
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}
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2014-01-21 21:58:08 +01:00
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if (netdev->name)
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hashmap_remove(netdev->manager->netdevs, netdev->name);
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2013-11-24 23:37:56 +01:00
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2014-01-21 21:58:08 +01:00
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free(netdev->filename);
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2013-11-24 23:37:56 +01:00
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2014-01-21 21:58:08 +01:00
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free(netdev->description);
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free(netdev->name);
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2013-11-24 23:37:56 +01:00
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2014-01-21 21:58:08 +01:00
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free(netdev);
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2013-11-24 23:37:56 +01:00
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}
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2014-02-07 17:03:23 +01:00
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int netdev_get(Manager *manager, const char *name, NetDev **ret) {
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NetDev *netdev;
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2013-11-24 23:37:56 +01:00
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assert(manager);
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assert(name);
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assert(ret);
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2014-01-21 21:58:08 +01:00
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netdev = hashmap_get(manager->netdevs, name);
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if (!netdev) {
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2013-11-24 23:37:56 +01:00
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*ret = NULL;
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return -ENOENT;
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}
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2014-01-21 21:58:08 +01:00
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*ret = netdev;
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2013-11-24 23:37:56 +01:00
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return 0;
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}
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2014-02-07 17:03:23 +01:00
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static int netdev_enter_failed(NetDev *netdev) {
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2014-01-21 21:58:08 +01:00
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netdev->state = NETDEV_STATE_FAILED;
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2013-11-24 23:37:56 +01:00
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return 0;
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}
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2014-02-07 17:03:23 +01:00
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static int netdev_enslave_ready(NetDev *netdev, Link* link, sd_rtnl_message_handler_t callback) {
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2014-02-13 03:44:14 +01:00
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_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
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2013-11-24 23:37:56 +01:00
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int r;
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2014-01-21 21:58:08 +01:00
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assert(netdev);
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assert(netdev->state == NETDEV_STATE_READY);
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2013-11-24 23:37:56 +01:00
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assert(link);
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assert(callback);
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2014-02-13 13:53:25 +01:00
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r = sd_rtnl_message_new_link(RTM_SETLINK, link->ifindex, &req);
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2013-11-24 23:37:56 +01:00
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if (r < 0) {
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2014-01-21 21:58:08 +01:00
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log_error_netdev(netdev,
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2014-01-09 02:42:38 +01:00
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"Could not allocate RTM_SETLINK message: %s",
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strerror(-r));
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2013-11-24 23:37:56 +01:00
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return r;
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}
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2014-01-29 21:24:44 +01:00
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r = sd_rtnl_message_append_u32(req, IFLA_MASTER, netdev->ifindex);
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2013-11-24 23:37:56 +01:00
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if (r < 0) {
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2014-01-21 21:58:08 +01:00
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log_error_netdev(netdev,
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2014-01-09 02:42:38 +01:00
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"Could not append IFLA_MASTER attribute: %s",
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strerror(-r));
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2013-11-24 23:37:56 +01:00
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return r;
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}
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2014-01-21 21:58:08 +01:00
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r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL);
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2013-11-24 23:37:56 +01:00
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if (r < 0) {
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2014-01-21 21:58:08 +01:00
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log_error_netdev(netdev,
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2014-01-09 02:42:38 +01:00
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"Could not send rtnetlink message: %s",
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strerror(-r));
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2013-11-24 23:37:56 +01:00
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return r;
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}
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2014-01-21 21:58:08 +01:00
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log_debug_netdev(netdev, "enslaving link '%s'", link->ifname);
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2014-01-12 15:24:11 +01:00
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2013-11-24 23:37:56 +01:00
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return 0;
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}
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2014-02-07 17:03:23 +01:00
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static int netdev_enter_ready(NetDev *netdev) {
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2014-01-21 21:58:08 +01:00
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netdev_enslave_callback *callback;
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2013-11-24 23:37:56 +01:00
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2014-01-21 21:58:08 +01:00
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assert(netdev);
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assert(netdev->name);
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2014-01-11 21:20:14 +01:00
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2014-01-21 21:58:08 +01:00
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netdev->state = NETDEV_STATE_READY;
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2013-11-24 23:37:56 +01:00
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2014-01-21 21:58:08 +01:00
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log_info_netdev(netdev, "netdev ready");
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2013-11-24 23:37:56 +01:00
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2014-01-21 21:58:08 +01:00
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LIST_FOREACH(callbacks, callback, netdev->callbacks) {
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/* enslave the links that were attempted to be enslaved befor the
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2013-11-24 23:37:56 +01:00
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* link was ready */
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2014-01-21 21:58:08 +01:00
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netdev_enslave_ready(netdev, callback->link, callback->callback);
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2013-11-24 23:37:56 +01:00
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}
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return 0;
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}
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2014-01-21 21:58:08 +01:00
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static int netdev_create_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) {
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2014-02-07 17:03:23 +01:00
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NetDev *netdev = userdata;
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2014-02-01 16:27:41 +01:00
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int r;
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2013-11-24 23:37:56 +01:00
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2014-01-21 21:58:08 +01:00
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assert(netdev->state != _NETDEV_STATE_INVALID);
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2013-11-24 23:37:56 +01:00
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r = sd_rtnl_message_get_errno(m);
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if (r < 0) {
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2014-01-21 21:58:08 +01:00
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log_warning_netdev(netdev, "netdev failed: %s", strerror(-r));
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netdev_enter_failed(netdev);
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2013-12-03 18:48:20 +01:00
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return 1;
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2013-11-24 23:37:56 +01:00
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}
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2013-12-03 18:48:20 +01:00
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return 1;
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2013-11-24 23:37:56 +01:00
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}
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2014-02-07 17:03:23 +01:00
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static int netdev_create(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
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2014-02-13 03:44:14 +01:00
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_cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
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2014-01-21 21:58:08 +01:00
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const char *kind;
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2013-11-24 23:37:56 +01:00
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int r;
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2014-01-21 21:58:08 +01:00
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assert(netdev);
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2014-02-10 18:41:54 +01:00
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assert(!(netdev->kind == NETDEV_KIND_VLAN) || (link && callback && netdev->vlanid <= VLANID_MAX));
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2014-01-21 21:58:08 +01:00
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assert(netdev->name);
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assert(netdev->manager);
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assert(netdev->manager->rtnl);
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2013-11-24 23:37:56 +01:00
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2014-02-13 13:53:25 +01:00
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r = sd_rtnl_message_new_link(RTM_NEWLINK, 0, &req);
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2013-11-24 23:37:56 +01:00
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if (r < 0) {
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2014-01-21 21:58:08 +01:00
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log_error_netdev(netdev,
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2014-01-09 02:42:38 +01:00
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"Could not allocate RTM_NEWLINK message: %s",
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strerror(-r));
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2013-11-24 23:37:56 +01:00
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return r;
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}
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2014-01-22 14:49:24 +01:00
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if (link) {
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r = sd_rtnl_message_append_u32(req, IFLA_LINK, link->ifindex);
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if (r < 0) {
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log_error_netdev(netdev,
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"Could not append IFLA_LINK attribute: %s",
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strerror(-r));
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return r;
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}
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}
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2014-01-21 21:58:08 +01:00
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r = sd_rtnl_message_append_string(req, IFLA_IFNAME, netdev->name);
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2013-11-24 23:37:56 +01:00
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if (r < 0) {
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2014-01-21 21:58:08 +01:00
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log_error_netdev(netdev,
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2014-01-09 02:42:38 +01:00
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"Could not append IFLA_IFNAME attribute: %s",
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strerror(-r));
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2013-11-24 23:37:56 +01:00
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return r;
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}
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2014-02-14 22:39:48 +01:00
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r = sd_rtnl_message_open_container(req, IFLA_LINKINFO);
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2013-11-24 23:37:56 +01:00
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if (r < 0) {
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2014-01-21 21:58:08 +01:00
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log_error_netdev(netdev,
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2014-01-09 02:42:38 +01:00
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"Could not open IFLA_LINKINFO container: %s",
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strerror(-r));
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2013-11-24 23:37:56 +01:00
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return r;
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}
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2014-01-21 21:58:08 +01:00
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kind = netdev_kind_to_string(netdev->kind);
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if (!kind) {
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log_error_netdev(netdev, "Invalid kind");
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return -EINVAL;
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}
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r = sd_rtnl_message_append_string(req, IFLA_INFO_KIND, kind);
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2013-11-24 23:37:56 +01:00
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if (r < 0) {
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2014-01-21 21:58:08 +01:00
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log_error_netdev(netdev,
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2014-01-09 02:42:38 +01:00
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"Could not append IFLA_INFO_KIND attribute: %s",
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strerror(-r));
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2013-11-24 23:37:56 +01:00
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return r;
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}
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2014-02-10 18:41:54 +01:00
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if (netdev->vlanid <= VLANID_MAX) {
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2014-02-14 22:39:48 +01:00
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r = sd_rtnl_message_open_container(req, IFLA_INFO_DATA);
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2014-01-22 14:49:24 +01:00
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if (r < 0) {
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log_error_netdev(netdev,
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"Could not open IFLA_INFO_DATA container: %s",
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strerror(-r));
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return r;
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}
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r = sd_rtnl_message_append_u16(req, IFLA_VLAN_ID, netdev->vlanid);
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if (r < 0) {
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log_error_netdev(netdev,
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"Could not append IFLA_VLAN_ID attribute: %s",
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strerror(-r));
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return r;
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}
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r = sd_rtnl_message_close_container(req);
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if (r < 0) {
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log_error_netdev(netdev,
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"Could not close IFLA_INFO_DATA container %s",
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strerror(-r));
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return r;
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}
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}
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2013-11-24 23:37:56 +01:00
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r = sd_rtnl_message_close_container(req);
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if (r < 0) {
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2014-01-21 21:58:08 +01:00
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log_error_netdev(netdev,
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2014-01-09 02:42:38 +01:00
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"Could not close IFLA_LINKINFO container %s",
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strerror(-r));
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2013-11-24 23:37:56 +01:00
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return r;
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}
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2014-01-22 14:49:24 +01:00
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if (link)
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r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL);
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else
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r = sd_rtnl_call_async(netdev->manager->rtnl, req, &netdev_create_handler, netdev, 0, NULL);
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2013-11-24 23:37:56 +01:00
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if (r < 0) {
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2014-01-21 21:58:08 +01:00
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log_error_netdev(netdev,
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2014-01-09 02:42:38 +01:00
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"Could not send rtnetlink message: %s", strerror(-r));
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2013-11-24 23:37:56 +01:00
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return r;
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}
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2014-01-21 21:58:08 +01:00
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log_debug_netdev(netdev, "creating netdev");
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2013-11-24 23:37:56 +01:00
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2014-01-21 21:58:08 +01:00
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netdev->state = NETDEV_STATE_CREATING;
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2013-11-24 23:37:56 +01:00
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return 0;
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}
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2014-02-07 17:03:23 +01:00
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int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
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2014-01-22 14:49:24 +01:00
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if (netdev->kind == NETDEV_KIND_VLAN)
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return netdev_create(netdev, link, callback);
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2014-01-21 21:58:08 +01:00
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if (netdev->state == NETDEV_STATE_READY) {
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netdev_enslave_ready(netdev, link, callback);
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2013-11-24 23:37:56 +01:00
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} else {
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2014-01-21 21:58:08 +01:00
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/* the netdev is not yet read, save this request for when it is*/
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netdev_enslave_callback *cb;
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2013-11-24 23:37:56 +01:00
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2014-01-21 21:58:08 +01:00
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cb = new0(netdev_enslave_callback, 1);
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2013-11-24 23:37:56 +01:00
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if (!cb)
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return log_oom();
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cb->callback = callback;
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cb->link = link;
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|
2014-01-21 21:58:08 +01:00
|
|
|
LIST_PREPEND(callbacks, netdev->callbacks, cb);
|
2013-11-24 23:37:56 +01:00
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-02-07 17:03:23 +01:00
|
|
|
int netdev_set_ifindex(NetDev *netdev, int ifindex) {
|
2014-01-29 21:24:44 +01:00
|
|
|
assert(netdev);
|
|
|
|
assert(ifindex > 0);
|
2013-11-24 23:37:56 +01:00
|
|
|
|
2014-01-29 21:24:44 +01:00
|
|
|
if (netdev->ifindex > 0) {
|
|
|
|
if (netdev->ifindex == ifindex)
|
|
|
|
return 0;
|
|
|
|
else
|
|
|
|
return -EEXIST;
|
|
|
|
}
|
2013-11-24 23:37:56 +01:00
|
|
|
|
2014-01-29 21:24:44 +01:00
|
|
|
netdev->ifindex = ifindex;
|
2014-01-21 21:58:08 +01:00
|
|
|
|
|
|
|
netdev_enter_ready(netdev);
|
2013-11-24 23:37:56 +01:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-01-21 21:58:08 +01:00
|
|
|
static int netdev_load_one(Manager *manager, const char *filename) {
|
2014-02-07 17:03:23 +01:00
|
|
|
_cleanup_netdev_free_ NetDev *netdev = NULL;
|
2013-11-24 23:37:56 +01:00
|
|
|
_cleanup_fclose_ FILE *file = NULL;
|
|
|
|
int r;
|
|
|
|
|
2013-12-16 18:55:59 +01:00
|
|
|
assert(manager);
|
|
|
|
assert(filename);
|
|
|
|
|
2013-11-24 23:37:56 +01:00
|
|
|
file = fopen(filename, "re");
|
|
|
|
if (!file) {
|
|
|
|
if (errno == ENOENT)
|
|
|
|
return 0;
|
|
|
|
else
|
|
|
|
return errno;
|
|
|
|
}
|
|
|
|
|
2014-02-07 17:03:23 +01:00
|
|
|
netdev = new0(NetDev, 1);
|
2014-01-21 21:58:08 +01:00
|
|
|
if (!netdev)
|
2013-11-24 23:37:56 +01:00
|
|
|
return log_oom();
|
|
|
|
|
2014-01-21 21:58:08 +01:00
|
|
|
netdev->manager = manager;
|
|
|
|
netdev->state = _NETDEV_STATE_INVALID;
|
|
|
|
netdev->kind = _NETDEV_KIND_INVALID;
|
2014-02-10 18:41:54 +01:00
|
|
|
netdev->vlanid = VLANID_MAX + 1;
|
2013-11-24 23:37:56 +01:00
|
|
|
|
2014-02-07 17:03:23 +01:00
|
|
|
r = config_parse(NULL, filename, file, "NetDev\0VLAN\0", config_item_perf_lookup,
|
2014-01-21 21:58:08 +01:00
|
|
|
(void*) network_gperf_lookup, false, false, netdev);
|
2013-11-24 23:37:56 +01:00
|
|
|
if (r < 0) {
|
|
|
|
log_warning("Could not parse config file %s: %s", filename, strerror(-r));
|
|
|
|
return r;
|
2014-01-02 15:30:46 +01:00
|
|
|
}
|
2013-11-24 23:37:56 +01:00
|
|
|
|
2014-01-21 21:58:08 +01:00
|
|
|
if (netdev->kind == _NETDEV_KIND_INVALID) {
|
2014-02-07 17:03:23 +01:00
|
|
|
log_warning("NetDev without Kind configured in %s. Ignoring", filename);
|
2014-01-21 21:58:08 +01:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!netdev->name) {
|
2014-02-07 17:03:23 +01:00
|
|
|
log_warning("NetDev without Name configured in %s. Ignoring", filename);
|
2013-11-24 23:37:56 +01:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-02-10 18:41:54 +01:00
|
|
|
if (netdev->kind == NETDEV_KIND_VLAN && netdev->vlanid > VLANID_MAX) {
|
|
|
|
log_warning("VLAN without valid Id configured in %s. Ignoring", filename);
|
2014-01-22 14:49:24 +01:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-01-21 21:58:08 +01:00
|
|
|
netdev->filename = strdup(filename);
|
|
|
|
if (!netdev->filename)
|
2013-11-24 23:37:56 +01:00
|
|
|
return log_oom();
|
|
|
|
|
2014-01-21 21:58:08 +01:00
|
|
|
r = hashmap_put(netdev->manager->netdevs, netdev->name, netdev);
|
2013-11-24 23:37:56 +01:00
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
|
2014-01-21 21:58:08 +01:00
|
|
|
LIST_HEAD_INIT(netdev->callbacks);
|
2013-11-24 23:37:56 +01:00
|
|
|
|
2014-01-22 14:49:24 +01:00
|
|
|
if (netdev->kind != NETDEV_KIND_VLAN) {
|
|
|
|
r = netdev_create(netdev, NULL, NULL);
|
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
}
|
2013-11-24 23:37:56 +01:00
|
|
|
|
2014-01-21 21:58:08 +01:00
|
|
|
netdev = NULL;
|
2013-11-24 23:37:56 +01:00
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2014-01-21 21:58:08 +01:00
|
|
|
int netdev_load(Manager *manager) {
|
2014-02-07 17:03:23 +01:00
|
|
|
NetDev *netdev;
|
2013-11-24 23:37:56 +01:00
|
|
|
char **files, **f;
|
|
|
|
int r;
|
|
|
|
|
|
|
|
assert(manager);
|
|
|
|
|
2014-01-21 21:58:08 +01:00
|
|
|
while ((netdev = hashmap_first(manager->netdevs)))
|
|
|
|
netdev_free(netdev);
|
2013-11-24 23:37:56 +01:00
|
|
|
|
2014-01-08 23:41:41 +01:00
|
|
|
r = conf_files_list_strv(&files, ".netdev", NULL, network_dirs);
|
2013-11-24 23:37:56 +01:00
|
|
|
if (r < 0) {
|
|
|
|
log_error("Failed to enumerate netdev files: %s", strerror(-r));
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
STRV_FOREACH_BACKWARDS(f, files) {
|
2014-01-21 21:58:08 +01:00
|
|
|
r = netdev_load_one(manager, *f);
|
2013-11-24 23:37:56 +01:00
|
|
|
if (r < 0)
|
|
|
|
return r;
|
|
|
|
}
|
|
|
|
|
|
|
|
strv_free(files);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|