src/resolve/resolved-link.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   Copyright 2014 Lennart Poettering
   6 ***/
   7
   8 #include <net/if.h>
   9
  10 #include "in-addr-util.h"
  11 #include "ratelimit.h"
  12 #include "resolve-util.h"
  13
  14 typedef struct Link Link;
  15 typedef struct LinkAddress LinkAddress;
  16
  17 #include "resolved-dns-rr.h"
  18 #include "resolved-dns-scope.h"
  19 #include "resolved-dns-search-domain.h"
  20 #include "resolved-dns-server.h"
  21 #include "resolved-manager.h"
  22
  23 #define LINK_SEARCH_DOMAINS_MAX 32
  24 #define LINK_DNS_SERVERS_MAX 32
  25
  26 struct LinkAddress {
  27         Link *link;
  28
  29         int family;
  30         union in_addr_union in_addr;
  31
  32         unsigned char flags, scope;
  33
  34         DnsResourceRecord *llmnr_address_rr;
  35         DnsResourceRecord *llmnr_ptr_rr;
  36         DnsResourceRecord *mdns_address_rr;
  37         DnsResourceRecord *mdns_ptr_rr;
  38
  39         LIST_FIELDS(LinkAddress, addresses);
  40 };
  41
  42 struct Link {
  43         Manager *manager;
  44
  45         int ifindex;
  46         unsigned flags;
  47
  48         LIST_HEAD(LinkAddress, addresses);
  49         unsigned n_addresses;
  50
  51         LIST_HEAD(DnsServer, dns_servers);
  52         DnsServer *current_dns_server;
  53         unsigned n_dns_servers;
  54
  55         LIST_HEAD(DnsSearchDomain, search_domains);
  56         unsigned n_search_domains;
  57
  58         ResolveSupport llmnr_support;
  59         ResolveSupport mdns_support;
  60         DnsOverTlsMode dns_over_tls_mode;
  61         DnssecMode dnssec_mode;
  62         Set *dnssec_negative_trust_anchors;
  63
  64         DnsScope *unicast_scope;
  65         DnsScope *llmnr_ipv4_scope;
  66         DnsScope *llmnr_ipv6_scope;
  67         DnsScope *mdns_ipv4_scope;
  68         DnsScope *mdns_ipv6_scope;
  69
  70         bool is_managed;
  71
  72         char name[IF_NAMESIZE];
  73         uint32_t mtu;
  74         uint8_t operstate;
  75
  76         bool loaded;
  77         char *state_file;
  78
  79         bool unicast_relevant;
  80 };
  81
  82 int link_new(Manager *m, Link **ret, int ifindex);
  83 Link *link_free(Link *l);
  84 int link_process_rtnl(Link *l, sd_netlink_message *m);
  85 int link_update(Link *l);
  86 bool link_relevant(Link *l, int family, bool local_multicast);
  87 LinkAddress* link_find_address(Link *l, int family, const union in_addr_union *in_addr);
  88 void link_add_rrs(Link *l, bool force_remove);
  89
  90 void link_flush_settings(Link *l);
  91 void link_set_dnssec_mode(Link *l, DnssecMode mode);
  92 void link_set_dns_over_tls_mode(Link *l, DnsOverTlsMode 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 DnsOverTlsMode link_get_dns_over_tls_mode(Link *l);
 103
 104 int link_save_user(Link *l);
 105 int link_load_user(Link *l);
 106 void link_remove_user(Link *l);
 107
 108 int link_address_new(Link *l, LinkAddress **ret, int family, const union in_addr_union *in_addr);
 109 LinkAddress *link_address_free(LinkAddress *a);
 110 int link_address_update_rtnl(LinkAddress *a, sd_netlink_message *m);
 111 bool link_address_relevant(LinkAddress *l, bool local_multicast);
 112 void link_address_add_rrs(LinkAddress *a, bool force_remove);
 113
 114 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free);