src/resolve/resolved-link.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include <net/if.h>
   5
   6 #include "in-addr-util.h"
   7 #include "ratelimit.h"
   8 #include "resolve-util.h"
   9
  10 typedef struct Link Link;
  11 typedef struct LinkAddress LinkAddress;
  12
  13 #include "resolved-dns-rr.h"
  14 #include "resolved-dns-scope.h"
  15 #include "resolved-dns-search-domain.h"
  16 #include "resolved-dns-server.h"
  17 #include "resolved-manager.h"
  18
  19 #define LINK_SEARCH_DOMAINS_MAX 256
  20 #define LINK_DNS_SERVERS_MAX 256
  21
  22 struct LinkAddress {
  23         Link *link;
  24
  25         int family;
  26         union in_addr_union in_addr;
  27
  28         unsigned char flags, scope;
  29
  30         DnsResourceRecord *llmnr_address_rr;
  31         DnsResourceRecord *llmnr_ptr_rr;
  32         DnsResourceRecord *mdns_address_rr;
  33         DnsResourceRecord *mdns_ptr_rr;
  34
  35         LIST_FIELDS(LinkAddress, addresses);
  36 };
  37
  38 struct Link {
  39         Manager *manager;
  40
  41         int ifindex;
  42         unsigned flags;
  43
  44         LIST_HEAD(LinkAddress, addresses);
  45         unsigned n_addresses;
  46
  47         LIST_HEAD(DnsServer, dns_servers);
  48         DnsServer *current_dns_server;
  49         unsigned n_dns_servers;
  50
  51         LIST_HEAD(DnsSearchDomain, search_domains);
  52         unsigned n_search_domains;
  53
  54         int default_route;
  55
  56         ResolveSupport llmnr_support;
  57         ResolveSupport mdns_support;
  58         DnsOverTlsMode dns_over_tls_mode;
  59         DnssecMode dnssec_mode;
  60         Set *dnssec_negative_trust_anchors;
  61
  62         DnsScope *unicast_scope;
  63         DnsScope *llmnr_ipv4_scope;
  64         DnsScope *llmnr_ipv6_scope;
  65         DnsScope *mdns_ipv4_scope;
  66         DnsScope *mdns_ipv6_scope;
  67
  68         bool is_managed;
  69
  70         char name[IF_NAMESIZE];
  71         uint32_t mtu;
  72         uint8_t operstate;
  73
  74         bool loaded;
  75         char *state_file;
  76
  77         bool unicast_relevant;
  78 };
  79
  80 int link_new(Manager *m, Link **ret, int ifindex);
  81 Link *link_free(Link *l);
  82 int link_process_rtnl(Link *l, sd_netlink_message *m);
  83 int link_update(Link *l);
  84 bool link_relevant(Link *l, int family, bool local_multicast);
  85 LinkAddress* link_find_address(Link *l, int family, const union in_addr_union *in_addr);
  86 void link_add_rrs(Link *l, bool force_remove);
  87
  88 void link_flush_settings(Link *l);
  89 void link_set_dnssec_mode(Link *l, DnssecMode mode);
  90 void link_set_dns_over_tls_mode(Link *l, DnsOverTlsMode mode);
  91 void link_allocate_scopes(Link *l);
  92
  93 DnsServer* link_set_dns_server(Link *l, DnsServer *s);
  94 DnsServer* link_get_dns_server(Link *l);
  95 void link_next_dns_server(Link *l);
  96
  97 DnssecMode link_get_dnssec_mode(Link *l);
  98 bool link_dnssec_supported(Link *l);
  99
 100 DnsOverTlsMode link_get_dns_over_tls_mode(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);