src/resolve/resolved-link.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   This file is part of systemd.
   6
   7   Copyright 2014 Lennart Poettering
   8 ***/
   9
  10 #include <net/if.h>
  11
  12 #include "in-addr-util.h"
  13 #include "ratelimit.h"
  14 #include "resolve-util.h"
  15
  16 typedef struct Link Link;
  17 typedef struct LinkAddress LinkAddress;
  18
  19 #include "resolved-dns-rr.h"
  20 #include "resolved-dns-scope.h"
  21 #include "resolved-dns-search-domain.h"
  22 #include "resolved-dns-server.h"
  23 #include "resolved-manager.h"
  24
  25 #define LINK_SEARCH_DOMAINS_MAX 32
  26 #define LINK_DNS_SERVERS_MAX 32
  27
  28 struct LinkAddress {
  29         Link *link;
  30
  31         int family;
  32         union in_addr_union in_addr;
  33
  34         unsigned char flags, scope;
  35
  36         DnsResourceRecord *llmnr_address_rr;
  37         DnsResourceRecord *llmnr_ptr_rr;
  38         DnsResourceRecord *mdns_address_rr;
  39         DnsResourceRecord *mdns_ptr_rr;
  40
  41         LIST_FIELDS(LinkAddress, addresses);
  42 };
  43
  44 struct Link {
  45         Manager *manager;
  46
  47         int ifindex;
  48         unsigned flags;
  49
  50         LIST_HEAD(LinkAddress, addresses);
  51         unsigned n_addresses;
  52
  53         LIST_HEAD(DnsServer, dns_servers);
  54         DnsServer *current_dns_server;
  55         unsigned n_dns_servers;
  56
  57         LIST_HEAD(DnsSearchDomain, search_domains);
  58         unsigned n_search_domains;
  59
  60         ResolveSupport llmnr_support;
  61         ResolveSupport mdns_support;
  62         DnssecMode dnssec_mode;
  63         Set *dnssec_negative_trust_anchors;
  64
  65         DnsScope *unicast_scope;
  66         DnsScope *llmnr_ipv4_scope;
  67         DnsScope *llmnr_ipv6_scope;
  68         DnsScope *mdns_ipv4_scope;
  69         DnsScope *mdns_ipv6_scope;
  70
  71         bool is_managed;
  72
  73         char name[IF_NAMESIZE];
  74         uint32_t mtu;
  75         uint8_t operstate;
  76
  77         bool loaded;
  78         char *state_file;
  79
  80         bool unicast_relevant;
  81 };
  82
  83 int link_new(Manager *m, Link **ret, int ifindex);
  84 Link *link_free(Link *l);
  85 int link_process_rtnl(Link *l, sd_netlink_message *m);
  86 int link_update(Link *l);
  87 bool link_relevant(Link *l, int family, bool local_multicast);
  88 LinkAddress* link_find_address(Link *l, int family, const union in_addr_union *in_addr);
  89 void link_add_rrs(Link *l, bool force_remove);
  90
  91 void link_flush_settings(Link *l);
  92 void link_set_dnssec_mode(Link *l, DnssecMode mode);
  93 void link_allocate_scopes(Link *l);
  94
  95 DnsServer* link_set_dns_server(Link *l, DnsServer *s);
  96 DnsServer* link_get_dns_server(Link *l);
  97 void link_next_dns_server(Link *l);
  98
  99 DnssecMode link_get_dnssec_mode(Link *l);
 100 bool link_dnssec_supported(Link *l);
 101
 102 int link_save_user(Link *l);
 103 int link_load_user(Link *l);
 104 void link_remove_user(Link *l);
 105
 106 int link_address_new(Link *l, LinkAddress **ret, int family, const union in_addr_union *in_addr);
 107 LinkAddress *link_address_free(LinkAddress *a);
 108 int link_address_update_rtnl(LinkAddress *a, sd_netlink_message *m);
 109 bool link_address_relevant(LinkAddress *l, bool local_multicast);
 110 void link_address_add_rrs(LinkAddress *a, bool force_remove);
 111
 112 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free);