src/network/networkd-ndisc.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include "conf-parser.h"
   5 #include "networkd-address.h"
   6 #include "networkd-link.h"
   7 #include "networkd-route.h"
   8 #include "time-util.h"
   9
  10 typedef struct IPv6Token IPv6Token;
  11
  12 typedef enum IPv6TokenAddressGeneration {
  13         IPV6_TOKEN_ADDRESS_GENERATION_NONE,
  14         IPV6_TOKEN_ADDRESS_GENERATION_STATIC,
  15         IPV6_TOKEN_ADDRESS_GENERATION_PREFIXSTABLE,
  16         _IPV6_TOKEN_ADDRESS_GENERATION_MAX,
  17         _IPV6_TOKEN_ADDRESS_GENERATION_INVALID = -1,
  18 } IPv6TokenAddressGeneration;
  19
  20 typedef enum IPv6AcceptRAStartDHCP6Client {
  21         IPV6_ACCEPT_RA_START_DHCP6_CLIENT_NO,
  22         IPV6_ACCEPT_RA_START_DHCP6_CLIENT_ALWAYS,
  23         IPV6_ACCEPT_RA_START_DHCP6_CLIENT_YES,
  24         _IPV6_ACCEPT_RA_START_DHCP6_CLIENT_MAX,
  25         _IPV6_ACCEPT_RA_START_DHCP6_CLIENT_INVALID = -1,
  26 } IPv6AcceptRAStartDHCP6Client;
  27
  28 typedef struct NDiscAddress {
  29         /* Used when GC'ing old DNS servers when configuration changes. */
  30         bool marked;
  31         struct in6_addr router;
  32         Address *address;
  33 } NDiscAddress;
  34
  35 typedef struct NDiscRoute {
  36         /* Used when GC'ing old DNS servers when configuration changes. */
  37         bool marked;
  38         struct in6_addr router;
  39         Route *route;
  40 } NDiscRoute;
  41
  42 typedef struct NDiscRDNSS {
  43         /* Used when GC'ing old DNS servers when configuration changes. */
  44         bool marked;
  45         struct in6_addr router;
  46         usec_t valid_until;
  47         struct in6_addr address;
  48 } NDiscRDNSS;
  49
  50 typedef struct NDiscDNSSL {
  51         /* Used when GC'ing old domains when configuration changes. */
  52         bool marked;
  53         struct in6_addr router;
  54         usec_t valid_until;
  55         /* The domain name follows immediately. */
  56 } NDiscDNSSL;
  57
  58 struct IPv6Token {
  59         IPv6TokenAddressGeneration address_generation_type;
  60
  61         uint8_t dad_counter;
  62         struct in6_addr prefix;
  63 };
  64
  65 int ipv6token_new(IPv6Token **ret);
  66 DEFINE_TRIVIAL_CLEANUP_FUNC(IPv6Token *, freep);
  67
  68 static inline char* NDISC_DNSSL_DOMAIN(const NDiscDNSSL *n) {
  69         return ((char*) n) + ALIGN(sizeof(NDiscDNSSL));
  70 }
  71
  72 bool link_ipv6_accept_ra_enabled(Link *link);
  73
  74 void network_adjust_ipv6_accept_ra(Network *network);
  75
  76 int ndisc_configure(Link *link);
  77 void ndisc_vacuum(Link *link);
  78 void ndisc_flush(Link *link);
  79
  80 CONFIG_PARSER_PROTOTYPE(config_parse_ndisc_deny_listed_prefix);
  81 CONFIG_PARSER_PROTOTYPE(config_parse_address_generation_type);
  82 CONFIG_PARSER_PROTOTYPE(config_parse_ipv6_accept_ra_start_dhcp6_client);
  83
  84 const char* ipv6_accept_ra_start_dhcp6_client_to_string(IPv6AcceptRAStartDHCP6Client i) _const_;
  85 IPv6AcceptRAStartDHCP6Client ipv6_accept_ra_start_dhcp6_client_from_string(const char *s) _pure_;