src/network/networkd-ipv4ll.c

b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen/***
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  This file is part of systemd.
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  Copyright 2013-2014 Tom Gundersen <teg@jklm.no>
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  systemd is free software; you can redistribute it and/or modify it
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  under the terms of the GNU Lesser General Public License as published by
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  the Free Software Foundation; either version 2.1 of the License, or
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  (at your option) any later version.
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  systemd is distributed in the hope that it will be useful, but
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  WITHOUT ANY WARRANTY; without even the implied warranty of
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  Lesser General Public License for more details.
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  You should have received a copy of the GNU Lesser General Public License
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen  along with systemd; If not, see <http://www.gnu.org/licenses/>.
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen***/
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen#include <netinet/ether.h>
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen#include <linux/if.h>
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen#include "network-internal.h"
cf0fbc49e67b55f8d346fc94de28c90113505297Thomas Hindoe Paaboel Andersen#include "networkd-link.h"
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersenstatic int ipv4ll_address_lost(Link *link) {
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        _cleanup_address_free_ Address *address = NULL;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        _cleanup_route_free_ Route *route = NULL;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        struct in_addr addr;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        int r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        link->ipv4ll_route = false;
920b52e4909d9dc812817fd8b82f83ca23a11c91Thomas Hindoe Paaboel Andersen        link->ipv4ll_address = false;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        r = sd_ipv4ll_get_address(link->ipv4ll, &addr);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return 0;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
79008bddf679a5e0900369950eb346c9fa687107Lennart Poettering        log_link_debug(link, "IPv4 link-local release %u.%u.%u.%u", ADDRESS_FMT_VAL(addr));
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
f0213e3796b4dd66e546e2de4d677db319f9171bTom Gundersen        r = address_new(&address);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0) {
e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering                log_link_error_errno(link, r, "Could not allocate address: %m");
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        }
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        address->family = AF_INET;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        address->in_addr.in = addr;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        address->prefixlen = 16;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        address->scope = RT_SCOPE_LINK;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
91b5f997316ddc77d26f9a7a5e24c335484586bdTom Gundersen        address_remove(address, link, &link_address_remove_handler);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
ed9e361a8a798f9fee353b5c7e0e23308e0d329fTom Gundersen        r = route_new(&route);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0) {
e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering                log_link_error_errno(link, r, "Could not allocate route: %m");
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        }
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        route->family = AF_INET;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        route->scope = RT_SCOPE_LINK;
86655331bc28887def7998d321b14ef8fccbeaf9Tom Gundersen        route->priority = IPV4LL_ROUTE_METRIC;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
91b5f997316ddc77d26f9a7a5e24c335484586bdTom Gundersen        route_remove(route, link, &link_route_remove_handler);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
8012cd391932d58b44332df106d426a360faf0a6Tom Gundersen        link_check_ready(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        return 0;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen}
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersenstatic int ipv4ll_route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        _cleanup_link_unref_ Link *link = userdata;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        int r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(!link->ipv4ll_route);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen        r = sd_netlink_message_get_errno(m);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0 && r != -EEXIST) {
e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering                log_link_error_errno(link, r, "could not set ipv4ll route: %m");
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                link_enter_failed(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        }
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        link->ipv4ll_route = true;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (link->ipv4ll_address == true)
8012cd391932d58b44332df106d426a360faf0a6Tom Gundersen                link_check_ready(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        return 1;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen}
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersenstatic int ipv4ll_address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) {
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        _cleanup_link_unref_ Link *link = userdata;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        int r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(!link->ipv4ll_address);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
1c4baffc1895809bae9ac36b670af90a4cb9cd7dTom Gundersen        r = sd_netlink_message_get_errno(m);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0 && r != -EEXIST) {
e53fc357a9bb9d0a5362ccc4246d598cb0febd5eLennart Poettering                log_link_error_errno(link, r, "could not set ipv4ll address: %m");
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                link_enter_failed(link);
45af44d47da6933b260c734ad9ff721f63f80a4dTom Gundersen        } else if (r >= 0)
200a0868fcdf7b95f3d8d1fda3aa2aef48d84fddTom Gundersen                manager_rtnl_process_address(rtnl, m, link->manager);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        link->ipv4ll_address = true;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (link->ipv4ll_route == true)
8012cd391932d58b44332df106d426a360faf0a6Tom Gundersen                link_check_ready(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        return 1;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen}
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersenstatic int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) {
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        _cleanup_address_free_ Address *ll_addr = NULL;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        _cleanup_route_free_ Route *route = NULL;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        struct in_addr address;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        int r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(ll);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        r = sd_ipv4ll_get_address(ll, &address);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r == -ENOENT)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return 0;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        else if (r < 0)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
79008bddf679a5e0900369950eb346c9fa687107Lennart Poettering        log_link_debug(link, "IPv4 link-local claim %u.%u.%u.%u",
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                       ADDRESS_FMT_VAL(address));
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
f0213e3796b4dd66e546e2de4d677db319f9171bTom Gundersen        r = address_new(&ll_addr);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        ll_addr->family = AF_INET;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        ll_addr->in_addr.in = address;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        ll_addr->prefixlen = 16;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        ll_addr->broadcast.s_addr = ll_addr->in_addr.in.s_addr | htonl(0xfffffffflu >> ll_addr->prefixlen);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        ll_addr->scope = RT_SCOPE_LINK;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
6666907869fb3bc7fe6a6025540db5b887c7a78bTom Gundersen        r = address_configure(ll_addr, link, ipv4ll_address_handler, false);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        link->ipv4ll_address = false;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
ed9e361a8a798f9fee353b5c7e0e23308e0d329fTom Gundersen        r = route_new(&route);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        route->family = AF_INET;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        route->scope = RT_SCOPE_LINK;
ed9e361a8a798f9fee353b5c7e0e23308e0d329fTom Gundersen        route->protocol = RTPROT_STATIC;
86655331bc28887def7998d321b14ef8fccbeaf9Tom Gundersen        route->priority = IPV4LL_ROUTE_METRIC;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        r = route_configure(route, link, ipv4ll_route_handler);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        link->ipv4ll_route = false;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        return 0;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen}
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersenstatic void ipv4ll_handler(sd_ipv4ll *ll, int event, void *userdata){
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        Link *link = userdata;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        int r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(link->network);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(link->manager);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        switch(event) {
be19c5b5e0c0f78b8429b126936fa15856550a23David Herrmann                case SD_IPV4LL_EVENT_STOP:
be19c5b5e0c0f78b8429b126936fa15856550a23David Herrmann                case SD_IPV4LL_EVENT_CONFLICT:
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                        r = ipv4ll_address_lost(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                        if (r < 0) {
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                                link_enter_failed(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                                return;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                        }
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                        break;
be19c5b5e0c0f78b8429b126936fa15856550a23David Herrmann                case SD_IPV4LL_EVENT_BIND:
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                        r = ipv4ll_address_claimed(ll, link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                        if (r < 0) {
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                                link_enter_failed(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                                return;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                        }
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                        break;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                default:
b45e4eb679ad0c9a77c4fe6e404c8842d4097fdbTom Gundersen                        log_link_warning(link, "IPv4 link-local unknown event: %d", event);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                        break;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        }
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen}
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersenint ipv4ll_configure(Link *link) {
dbe81cbd2a93088236a2e4e41eeb33378940f7b9Martin Pitt        uint64_t seed;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        int r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        assert(link->network);
e0ee46f29028e291eb67f435aff1b6202d75d9d6Lennart Poettering        assert(link->network->link_local & ADDRESS_FAMILY_IPV4);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
0bc70f1d9c5453ba614ec0ed041dc30b9cd52071Tom Gundersen        if (!link->ipv4ll) {
0bc70f1d9c5453ba614ec0ed041dc30b9cd52071Tom Gundersen                r = sd_ipv4ll_new(&link->ipv4ll);
0bc70f1d9c5453ba614ec0ed041dc30b9cd52071Tom Gundersen                if (r < 0)
0bc70f1d9c5453ba614ec0ed041dc30b9cd52071Tom Gundersen                        return r;
0bc70f1d9c5453ba614ec0ed041dc30b9cd52071Tom Gundersen        }
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (link->udev_device) {
dbe81cbd2a93088236a2e4e41eeb33378940f7b9Martin Pitt                r = net_get_unique_predictable_data(link->udev_device, &seed);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                if (r >= 0) {
e3dca0089b7b50e2ec21409d1292727921d06102Tom Gundersen                        assert_cc(sizeof(unsigned) <= 8);
e3dca0089b7b50e2ec21409d1292727921d06102Tom Gundersen
dbe81cbd2a93088236a2e4e41eeb33378940f7b9Martin Pitt                        r = sd_ipv4ll_set_address_seed(link->ipv4ll, (unsigned)seed);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                        if (r < 0)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                }
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        }
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        r = sd_ipv4ll_attach_event(link->ipv4ll, NULL, 0);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        r = sd_ipv4ll_set_mac(link->ipv4ll, &link->mac);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        r = sd_ipv4ll_set_index(link->ipv4ll, link->ifindex);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        r = sd_ipv4ll_set_callback(link->ipv4ll, ipv4ll_handler, link);
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        if (r < 0)
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen                return r;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen        return 0;
b22d8a00f48f3c5fc4510b4acd3e1a43e731e592Tom Gundersen}