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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2013 Tom Gundersen <teg@jklm.no>
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <netinet/ether.h>
#include <linux/if.h>
#include "networkd.h"
#include "libudev-private.h"
#include "util.h"
int link_new(Manager *manager, struct udev_device *device, Link **ret) {
_cleanup_link_free_ Link *link = NULL;
uint64_t ifindex;
const char *mac;
int r;
assert(device);
assert(ret);
link = new0(Link, 1);
if (!link)
return -ENOMEM;
ifindex = udev_device_get_ifindex(device);
if (ifindex <= 0)
return -EINVAL;
mac = udev_device_get_sysattr_value(device, "address");
if (!mac)
return -EINVAL;
memcpy(&link->mac.ether_addr_octet[0], ether_aton(mac), ETH_ALEN);
link->ifindex = ifindex;
link->manager = manager;
r = hashmap_put(manager->links, &ifindex, link);
if (r < 0)
return r;
*ret = link;
link = NULL;
return 0;
}
void link_free(Link *link) {
if (!link)
return;
network_free(link->network);
hashmap_remove(link->manager->links, link);
free(link);
}
int link_add(Manager *m, struct udev_device *device) {
Link *link;
Network *network;
int r;
uint64_t ifindex;
assert(m);
assert(device);
ifindex = udev_device_get_ifindex(device);
link = hashmap_get(m->links, &ifindex);
if (link)
return 0;
r = link_new(m, device, &link);
if (r < 0) {
log_error("could not create link: %s", strerror(-r));
return r;
}
r = network_get(m, device, &network);
if (r < 0)
return r == -ENOENT ? 0 : r;
r = network_apply(m, network, link);
if (r < 0)
return r;
return 0;
}
int link_up(Manager *manager, Link *link) {
_cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
int r;
r = sd_rtnl_message_link_new(RTM_NEWLINK, link->ifindex, 0, IFF_UP, &req);
if (r < 0) {
log_error("Could not allocate RTM_NEWLINK message");
return r;
}
r = sd_rtnl_call(manager->rtnl, req, 0, NULL);
if (r < 0) {
log_error("Could not UP link: %s", strerror(-r));
return r;
}
log_info("Link is UP");
return 0;
}
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