2015-10-16 21:09:15 +02:00
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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 (C) 2014 Intel Corporation. All rights reserved.
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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 <netinet/ether.h>
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2015-10-19 22:15:50 +02:00
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#include <netinet/icmp6.h>
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2015-10-16 21:09:15 +02:00
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#include <linux/if.h>
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#include "sd-ndisc.h"
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2015-10-24 22:58:24 +02:00
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#include "networkd-link.h"
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2015-10-19 22:15:50 +02:00
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static void ndisc_router_handler(sd_ndisc *nd, uint8_t flags, const struct in6_addr *gateway, unsigned lifetime, int pref, void *userdata) {
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2015-10-16 21:09:15 +02:00
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Link *link = userdata;
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assert(link);
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assert(link->network);
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if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
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return;
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2015-10-19 22:15:50 +02:00
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if (flags & ND_RA_FLAG_MANAGED)
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dhcp6_configure(link, false);
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else if (flags & ND_RA_FLAG_OTHER)
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2015-10-16 21:09:15 +02:00
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dhcp6_configure(link, true);
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2015-10-19 22:15:50 +02:00
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}
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2015-10-16 21:09:15 +02:00
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2015-10-19 22:15:50 +02:00
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static void ndisc_handler(sd_ndisc *nd, int event, void *userdata) {
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Link *link = userdata;
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2015-10-16 21:09:15 +02:00
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2015-10-19 22:15:50 +02:00
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assert(link);
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2015-10-16 21:09:15 +02:00
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2015-10-19 22:15:50 +02:00
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if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
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return;
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2015-10-16 21:09:15 +02:00
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2015-10-19 22:15:50 +02:00
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switch (event) {
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case SD_NDISC_EVENT_TIMEOUT:
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dhcp6_configure(link, false);
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2015-10-16 21:09:15 +02:00
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break;
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2015-10-19 22:15:50 +02:00
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case SD_NDISC_EVENT_STOP:
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break;
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default:
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log_link_warning(link, "IPv6 Neighbor Discovery unknown event: %d", event);
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2015-10-16 21:09:15 +02:00
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}
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}
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int ndisc_configure(Link *link) {
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int r;
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assert_return(link, -EINVAL);
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r = sd_ndisc_new(&link->ndisc_router_discovery);
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if (r < 0)
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return r;
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r = sd_ndisc_attach_event(link->ndisc_router_discovery, NULL, 0);
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if (r < 0)
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return r;
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r = sd_ndisc_set_mac(link->ndisc_router_discovery, &link->mac);
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if (r < 0)
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return r;
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r = sd_ndisc_set_index(link->ndisc_router_discovery, link->ifindex);
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if (r < 0)
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return r;
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r = sd_ndisc_set_callback(link->ndisc_router_discovery,
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2015-10-19 22:15:50 +02:00
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ndisc_router_handler,
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NULL,
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NULL,
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ndisc_handler,
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link);
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2015-10-16 21:09:15 +02:00
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return r;
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}
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