#include "in-addr-util.h"
typedef struct DnsServer DnsServer;
-typedef enum DnsServerSource DnsServerSource;
typedef enum DnsServerType {
DNS_SERVER_SYSTEM,
DNS_SERVER_LINK,
} DnsServerType;
+typedef enum DnsServerFeatureLevel {
+ DNS_SERVER_FEATURE_LEVEL_TCP,
+ DNS_SERVER_FEATURE_LEVEL_UDP,
+ DNS_SERVER_FEATURE_LEVEL_EDNS0,
+ DNS_SERVER_FEATURE_LEVEL_DO,
+ DNS_SERVER_FEATURE_LEVEL_LARGE,
+ _DNS_SERVER_FEATURE_LEVEL_MAX,
+ _DNS_SERVER_FEATURE_LEVEL_INVALID = -1
+} DnsServerFeatureLevel;
+
+#define DNS_SERVER_FEATURE_LEVEL_WORST 0
+#define DNS_SERVER_FEATURE_LEVEL_BEST (_DNS_SERVER_FEATURE_LEVEL_MAX - 1)
+
+const char* dns_server_feature_level_to_string(int i) _const_;
+int dns_server_feature_level_from_string(const char *s) _pure_;
+
#include "resolved-link.h"
+#include "resolved-manager.h"
struct DnsServer {
Manager *manager;
unsigned n_ref;
DnsServerType type;
-
Link *link;
int family;
union in_addr_union address;
+ char *server_string;
+
+ usec_t resend_timeout;
+ usec_t max_rtt;
+
+ DnsServerFeatureLevel verified_feature_level;
+ DnsServerFeatureLevel possible_feature_level;
+
+ size_t received_udp_packet_max;
+
+ unsigned n_failed_udp;
+ unsigned n_failed_tcp;
+
+ bool packet_failed:1;
+ bool packet_truncated:1;
+ bool packet_bad_opt:1;
+ bool packet_rrsig_missing:1;
+
+ usec_t verified_usec;
+ usec_t features_grace_period_usec;
+
+ /* Whether we already warned about downgrading to non-DNSSEC mode for this server */
+ bool warned_downgrade:1;
+
+ /* Used when GC'ing old DNS servers when configuration changes. */
bool marked:1;
+ /* If linked is set, then this server appears in the servers linked list */
+ bool linked:1;
LIST_FIELDS(DnsServer, servers);
};
int dns_server_new(
Manager *m,
- DnsServer **s,
+ DnsServer **ret,
DnsServerType type,
- Link *l,
+ Link *link,
int family,
const union in_addr_union *address);
DnsServer* dns_server_ref(DnsServer *s);
DnsServer* dns_server_unref(DnsServer *s);
+void dns_server_unlink(DnsServer *s);
+void dns_server_move_back_and_unmark(DnsServer *s);
+
+void dns_server_packet_received(DnsServer *s, int protocol, DnsServerFeatureLevel level, usec_t rtt, size_t size);
+void dns_server_packet_lost(DnsServer *s, int protocol, DnsServerFeatureLevel level, usec_t usec);
+void dns_server_packet_failed(DnsServer *s, DnsServerFeatureLevel level);
+void dns_server_packet_truncated(DnsServer *s, DnsServerFeatureLevel level);
+void dns_server_packet_rrsig_missing(DnsServer *s, DnsServerFeatureLevel level);
+void dns_server_packet_bad_opt(DnsServer *s, DnsServerFeatureLevel level);
+
+DnsServerFeatureLevel dns_server_possible_feature_level(DnsServer *s);
+
+int dns_server_adjust_opt(DnsServer *server, DnsPacket *packet, DnsServerFeatureLevel level);
+
+const char *dns_server_string(DnsServer *server);
+
+bool dns_server_dnssec_supported(DnsServer *server);
+
+void dns_server_warn_downgrade(DnsServer *server);
+
+DnsServer *dns_server_find(DnsServer *first, int family, const union in_addr_union *in_addr);
+
+void dns_server_unlink_all(DnsServer *first);
+void dns_server_unlink_marked(DnsServer *first);
+void dns_server_mark_all(DnsServer *first);
+
+DnsServer *manager_get_first_dns_server(Manager *m, DnsServerType t);
+
+DnsServer *manager_set_dns_server(Manager *m, DnsServer *s);
+DnsServer *manager_get_dns_server(Manager *m);
+void manager_next_dns_server(Manager *m);
+
DEFINE_TRIVIAL_CLEANUP_FUNC(DnsServer*, dns_server_unref);
extern const struct hash_ops dns_server_hash_ops;