src/resolve/resolved-dns-server.h

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 #pragma once
   4
   5 /***
   6   This file is part of systemd.
   7
   8   Copyright 2014 Lennart Poettering
   9
  10   systemd is free software; you can redistribute it and/or modify it
  11   under the terms of the GNU Lesser General Public License as published by
  12   the Free Software Foundation; either version 2.1 of the License, or
  13   (at your option) any later version.
  14
  15   systemd is distributed in the hope that it will be useful, but
  16   WITHOUT ANY WARRANTY; without even the implied warranty of
  17   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  18   Lesser General Public License for more details.
  19
  20   You should have received a copy of the GNU Lesser General Public License
  21   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  22 ***/
  23
  24 #include "in-addr-util.h"
  25
  26 typedef struct DnsServer DnsServer;
  27 typedef enum DnsServerSource DnsServerSource;
  28
  29 typedef enum DnsServerType {
  30         DNS_SERVER_SYSTEM,
  31         DNS_SERVER_FALLBACK,
  32         DNS_SERVER_LINK,
  33 } DnsServerType;
  34
  35 #include "resolved-link.h"
  36
  37 struct DnsServer {
  38         Manager *manager;
  39
  40         unsigned n_ref;
  41
  42         DnsServerType type;
  43
  44         Link *link;
  45
  46         int family;
  47         union in_addr_union address;
  48
  49         usec_t resend_timeout;
  50         usec_t max_rtt;
  51
  52         bool marked:1;
  53
  54         /* If linked is set, then this server appears in the servers linked list */
  55         bool linked:1;
  56         LIST_FIELDS(DnsServer, servers);
  57 };
  58
  59 int dns_server_new(
  60                 Manager *m,
  61                 DnsServer **s,
  62                 DnsServerType type,
  63                 Link *l,
  64                 int family,
  65                 const union in_addr_union *address);
  66
  67 DnsServer* dns_server_ref(DnsServer *s);
  68 DnsServer* dns_server_unref(DnsServer *s);
  69
  70 void dns_server_unlink(DnsServer *s);
  71
  72 void dns_server_packet_received(DnsServer *s, usec_t rtt);
  73 void dns_server_packet_lost(DnsServer *s, usec_t usec);
  74
  75 DnsServer *manager_get_first_dns_server(Manager *m, DnsServerType t);
  76
  77 void manager_flush_dns_servers(Manager *m, DnsServerType t);
  78 void manager_flush_marked_dns_servers(Manager *m, DnsServerType type);
  79 void manager_mark_dns_servers(Manager *m, DnsServerType type);
  80
  81 DnsServer *manager_set_dns_server(Manager *m, DnsServer *s);
  82 DnsServer *manager_find_dns_server(Manager *m, DnsServerType t, int family, const union in_addr_union *in_addr);
  83 DnsServer *manager_get_dns_server(Manager *m);
  84 void manager_next_dns_server(Manager *m);
  85
  86 DEFINE_TRIVIAL_CLEANUP_FUNC(DnsServer*, dns_server_unref);
  87
  88 extern const struct hash_ops dns_server_hash_ops;