src/resolve/resolved-link.c

	resolved-link.c revision 6f4dedb250f2d607eceefaa491f338becbeee7c0
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering/***
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  This file is part of systemd.
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  Copyright 2014 Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  systemd is free software; you can redistribute it and/or modify it
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  under the terms of the GNU Lesser General Public License as published by
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  the Free Software Foundation; either version 2.1 of the License, or
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  (at your option) any later version.
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  systemd is distributed in the hope that it will be useful, but
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  WITHOUT ANY WARRANTY; without even the implied warranty of
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  Lesser General Public License for more details.
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  You should have received a copy of the GNU Lesser General Public License
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering  along with systemd; If not, see <http://www.gnu.org/licenses/>.
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering***/
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering#include <net/if.h>
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering#include "sd-network.h"
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering#include "strv.h"
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering#include "resolved-link.h"
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringint link_new(Manager *m, Link **ret, int ifindex) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        _cleanup_(link_freep) Link *l = NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        int r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(m);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(ifindex > 0);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        r = hashmap_ensure_allocated(&m->links, NULL, NULL);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (r < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        l = new0(Link, 1);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (!l)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return -ENOMEM;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        l->ifindex = ifindex;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        r = hashmap_put(m->links, INT_TO_PTR(ifindex), l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (r < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        l->manager = m;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (ret)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                *ret = l;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        l = NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart PoetteringLink *link_free(Link *l) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (!l)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        while (l->addresses)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                link_address_free(l->addresses);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (l->manager)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                hashmap_remove(l->manager->links, INT_TO_PTR(l->ifindex));
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        dns_scope_free(l->unicast_scope);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        dns_scope_free(l->llmnr_ipv4_scope);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        dns_scope_free(l->llmnr_ipv6_scope);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen        while (l->dns_servers)
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen                dns_server_free(l->dns_servers);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        free(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return NULL;
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering}
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poetteringstatic void link_allocate_scopes(Link *l) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        int r;
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        assert(l);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen        if (l->dns_servers) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                if (!l->unicast_scope) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                        r = dns_scope_new(l->manager, &l->unicast_scope, l, DNS_PROTOCOL_DNS, AF_UNSPEC);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                        if (r < 0)
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                                log_warning("Failed to allocate DNS scope: %s", strerror(-r));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                }
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        } else
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                l->unicast_scope = dns_scope_free(l->unicast_scope);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        if (link_relevant(l, AF_INET) && l->manager->use_llmnr) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                if (!l->llmnr_ipv4_scope) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                        r = dns_scope_new(l->manager, &l->llmnr_ipv4_scope, l, DNS_PROTOCOL_LLMNR, AF_INET);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                        if (r < 0)
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                                log_warning("Failed to allocate LLMNR IPv4 scope: %s", strerror(-r));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                }
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        } else
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                l->llmnr_ipv4_scope = dns_scope_free(l->llmnr_ipv4_scope);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        if (link_relevant(l, AF_INET6) && l->manager->use_llmnr) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                if (!l->llmnr_ipv6_scope) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                        r = dns_scope_new(l->manager, &l->llmnr_ipv6_scope, l, DNS_PROTOCOL_LLMNR, AF_INET6);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                        if (r < 0)
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                                log_warning("Failed to allocate LLMNR IPv6 scope: %s", strerror(-r));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                }
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        } else
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                l->llmnr_ipv6_scope = dns_scope_free(l->llmnr_ipv6_scope);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringint link_update_rtnl(Link *l, sd_rtnl_message *m) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        const char *n = NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        int r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(m);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        r = sd_rtnl_message_link_get_flags(m, &l->flags);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (r < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
c5ed93163e6ef51a7462aa558a7e0912b17c4951Lennart Poettering        sd_rtnl_message_read_u32(m, IFLA_MTU, &l->mtu);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        if (sd_rtnl_message_read_string(m, IFLA_IFNAME, &n) >= 0) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                strncpy(l->name, n, sizeof(l->name));
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                char_array_0(l->name);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        }
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        link_allocate_scopes(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersenstatic int link_update_dns_servers(Link *l) {
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen        _cleanup_strv_free_ char **nameservers = NULL;
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen        char **nameserver;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        DnsServer *s, *nx;
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen        int r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen        LIST_FOREACH(servers, s, l->dns_servers)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                s->marked = true;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen        r = sd_network_get_dns(l->ifindex, &nameservers);
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen        if (r < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                goto clear;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen        STRV_FOREACH(nameserver, nameservers) {
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen                union in_addr_union a;
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen                int family;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen                r = in_addr_from_string_auto(*nameserver, &family, &a);
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen                if (r < 0)
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen                        goto clear;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen                s = link_find_dns_server(l, family, &a);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                if (s)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                        s->marked = false;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                else {
6f4dedb250f2d607eceefaa491f338becbeee7c0Tom Gundersen                        r = dns_server_new(l->manager, NULL, l, family, &a);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                        if (r < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                                goto clear;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                }
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        }
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen        LIST_FOREACH_SAFE(servers, s, nx, l->dns_servers)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                if (s->marked)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                        dns_server_free(s);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringclear:
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen        while (l->dns_servers)
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen                dns_server_free(l->dns_servers);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringint link_update_monitor(Link *l) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen        link_update_dns_servers(l);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        link_allocate_scopes(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poetteringbool link_relevant(Link *l, int family) {
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        _cleanup_free_ char *state = NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        LinkAddress *a;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        /* A link is relevant if it isn't a loopback device and has at
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering         * least one relevant IP address */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (l->flags & IFF_LOOPBACK)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return false;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        sd_network_get_link_operational_state(l->ifindex, &state);
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        if (state && !STR_IN_SET(state, "unknown", "degraded", "routable"))
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return false;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        LIST_FOREACH(addresses, a, l->addresses)
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                if (a->family == family && link_address_relevant(a))
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                        return true;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return false;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart PoetteringLinkAddress *link_find_address(Link *l, int family, union in_addr_union *in_addr) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        LinkAddress *a;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        LIST_FOREACH(addresses, a, l->addresses)
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                if (a->family == family && in_addr_equal(family, &a->in_addr, in_addr))
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                        return a;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom GundersenDnsServer* link_find_dns_server(Link *l, int family, union in_addr_union *in_addr) {
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen        DnsServer *s;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen        LIST_FOREACH(servers, s, l->dns_servers)
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering                if (s->family == family && in_addr_equal(family, &s->address, in_addr))
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                        return s;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart PoetteringDnsServer *link_get_dns_server(Link *l) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (!l->current_dns_server)
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen                l->current_dns_server = l->dns_servers;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return l->current_dns_server;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringvoid link_next_dns_server(Link *l) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        /* Switch to the next DNS server */
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (!l->current_dns_server) {
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen                l->current_dns_server = l->dns_servers;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                if (l->current_dns_server)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                        return;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        }
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (!l->current_dns_server)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (l->current_dns_server->servers_next) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                l->current_dns_server = l->current_dns_server->servers_next;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        }
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
6073b6f26ab9fc6bf335faa7073ec443eef093fdTom Gundersen        l->current_dns_server = l->dns_servers;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poetteringint link_address_new(Link *l, LinkAddress **ret, int family, union in_addr_union *in_addr) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        LinkAddress *a;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(l);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(in_addr);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        a = new0(LinkAddress, 1);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (!a)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return -ENOMEM;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        a->family = family;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        a->in_addr = *in_addr;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        a->link = l;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        LIST_PREPEND(addresses, l->addresses, a);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (ret)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                *ret = a;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart PoetteringLinkAddress *link_address_free(LinkAddress *a) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (!a)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (a->link)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                LIST_REMOVE(addresses, a->link->addresses, a);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        free(a);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return NULL;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringint link_address_update_rtnl(LinkAddress *a, sd_rtnl_message *m) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        int r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(a);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(m);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        r = sd_rtnl_message_addr_get_flags(m, &a->flags);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (r < 0)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return r;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        sd_rtnl_message_addr_get_scope(m, &a->scope);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
1716f6dcf54d4c181c2e2558e3d5414f54c8d9caLennart Poettering        link_allocate_scopes(a->link);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return 0;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poetteringbool link_address_relevant(LinkAddress *a) {
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        assert(a);
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (a->flags & IFA_F_DEPRECATED)
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return false;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        if (IN_SET(a->scope, RT_SCOPE_HOST, RT_SCOPE_NOWHERE))
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering                return false;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering        return true;
74b2466e14a1961bf3ac0e8a60cfaceec705bd59Lennart Poettering}