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-rw-r--r--src/network/networkd-ndisc.c94
1 files changed, 94 insertions, 0 deletions
diff --git a/src/network/networkd-ndisc.c b/src/network/networkd-ndisc.c
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+++ b/src/network/networkd-ndisc.c
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+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2014 Intel Corporation. All rights reserved.
+
+ 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-link.h"
+
+#include "sd-ndisc.h"
+
+static void ndisc_router_handler(sd_ndisc *nd, int event, void *userdata) {
+ Link *link = userdata;
+
+ assert(link);
+ assert(link->network);
+ assert(link->manager);
+
+ if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+ return;
+
+ switch(event) {
+ case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_NONE:
+ return;
+
+ case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_OTHER:
+ dhcp6_configure(link, true);
+
+ break;
+ case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_TIMEOUT:
+ case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_MANAGED:
+ dhcp6_configure(link, false);
+
+ break;
+
+ case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_PREFIX_EXPIRED:
+ if (!link->rtnl_extended_attrs)
+ dhcp6_prefix_expired(link);
+
+ break;
+
+ default:
+ if (event < 0)
+ log_link_warning_errno(link, event, "IPv6 Neighbor Discover error: %m");
+ else
+ log_link_warning(link, "IPv6 Neighbor Discovery unknown event: %d", event);
+
+ break;
+ }
+}
+
+int ndisc_configure(Link *link) {
+ int r;
+
+ assert_return(link, -EINVAL);
+
+ r = sd_ndisc_new(&link->ndisc_router_discovery);
+ if (r < 0)
+ return r;
+
+ r = sd_ndisc_attach_event(link->ndisc_router_discovery, NULL, 0);
+ if (r < 0)
+ return r;
+
+ r = sd_ndisc_set_mac(link->ndisc_router_discovery, &link->mac);
+ if (r < 0)
+ return r;
+
+ r = sd_ndisc_set_index(link->ndisc_router_discovery, link->ifindex);
+ if (r < 0)
+ return r;
+
+ r = sd_ndisc_set_callback(link->ndisc_router_discovery,
+ ndisc_router_handler, link);
+
+ return r;
+}