src/resolve/resolved-link.h

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2 #pragma once
   3
   4 #include <sys/stat.h>
   5
   6 #include "sd-netlink.h"
   7
   8 #include "in-addr-util.h"
   9 #include "network-util.h"
  10 #include "ratelimit.h"
  11 #include "resolve-util.h"
  12
  13 typedef struct Link Link;
  14 typedef struct LinkAddress LinkAddress;
  15
  16 #include "resolved-dns-rr.h"
  17 #include "resolved-dns-scope.h"
  18 #include "resolved-dns-search-domain.h"
  19 #include "resolved-dns-server.h"
  20
  21 #define LINK_SEARCH_DOMAINS_MAX 256
  22 #define LINK_DNS_SERVERS_MAX 256
  23
  24 struct LinkAddress {
  25         Link *link;
  26
  27         int family;
  28         union in_addr_union in_addr;
  29         union in_addr_union in_addr_broadcast;
  30         unsigned char prefixlen;
  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         int default_route;
  59
  60         ResolveSupport llmnr_support;
  61         ResolveSupport mdns_support;
  62         DnsOverTlsMode dns_over_tls_mode;
  63         DnssecMode dnssec_mode;
  64         Set *dnssec_negative_trust_anchors;
  65
  66         DnsScope *unicast_scope;
  67         DnsScope *llmnr_ipv4_scope;
  68         DnsScope *llmnr_ipv6_scope;
  69         DnsScope *mdns_ipv4_scope;
  70         DnsScope *mdns_ipv6_scope;
  71
  72         struct stat networkd_state_file_stat;
  73         LinkOperationalState networkd_operstate;
  74         bool is_managed;
  75
  76         char *ifname;
  77         uint32_t mtu;
  78         uint8_t operstate;
  79
  80         bool loaded;
  81         char *state_file;
  82
  83         bool unicast_relevant;
  84 };
  85
  86 int link_new(Manager *m, Link **ret, int ifindex);
  87 Link *link_free(Link *l);
  88 int link_process_rtnl(Link *l, sd_netlink_message *m);
  89 int link_update(Link *l);
  90 bool link_relevant(Link *l, int family, bool local_multicast);
  91 LinkAddress* link_find_address(Link *l, int family, const union in_addr_union *in_addr);
  92 void link_add_rrs(Link *l, bool force_remove);
  93
  94 void link_flush_settings(Link *l);
  95 void link_set_dnssec_mode(Link *l, DnssecMode mode);
  96 void link_set_dns_over_tls_mode(Link *l, DnsOverTlsMode mode);
  97 void link_allocate_scopes(Link *l);
  98
  99 DnsServer* link_set_dns_server(Link *l, DnsServer *s);
 100 DnsServer* link_get_dns_server(Link *l);
 101 void link_next_dns_server(Link *l, DnsServer *if_current);
 102
 103 DnssecMode link_get_dnssec_mode(Link *l);
 104 bool link_dnssec_supported(Link *l);
 105
 106 DnsOverTlsMode link_get_dns_over_tls_mode(Link *l);
 107
 108 ResolveSupport link_get_llmnr_support(Link *link);
 109 ResolveSupport link_get_mdns_support(Link *link);
 110
 111 int link_save_user(Link *l);
 112 int link_load_user(Link *l);
 113 void link_remove_user(Link *l);
 114
 115 int link_address_new(Link *l,
 116                 LinkAddress **ret,
 117                 int family,
 118                 const union in_addr_union *in_addr,
 119                 const union in_addr_union *in_addr_broadcast);
 120 LinkAddress *link_address_free(LinkAddress *a);
 121 int link_address_update_rtnl(LinkAddress *a, sd_netlink_message *m);
 122 bool link_address_relevant(LinkAddress *l, bool local_multicast);
 123 void link_address_add_rrs(LinkAddress *a, bool force_remove);
 124
 125 bool link_negative_trust_anchor_lookup(Link *l, const char *name);
 126
 127 DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free);