src/libsystemd-network/dhcp6-internal.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 /***
   5   Copyright © 2014-2015 Intel Corporation. All rights reserved.
   6 ***/
   7
   8 #include <net/ethernet.h>
   9 #include <netinet/in.h>
  10
  11 #include "sd-event.h"
  12
  13 #include "list.h"
  14 #include "macro.h"
  15 #include "sparse-endian.h"
  16
  17 typedef struct sd_dhcp6_option {
  18         unsigned n_ref;
  19
  20         uint16_t option;
  21         void *data;
  22         size_t length;
  23 } sd_dhcp6_option;
  24
  25 extern const struct hash_ops dhcp6_option_hash_ops;
  26
  27 /* Common option header */
  28 typedef struct DHCP6Option {
  29         be16_t code;
  30         be16_t len;
  31         uint8_t data[];
  32 } _packed_ DHCP6Option;
  33
  34 /* Address option */
  35 struct iaaddr {
  36         struct in6_addr address;
  37         be32_t lifetime_preferred;
  38         be32_t lifetime_valid;
  39 } _packed_;
  40
  41 /* Prefix Delegation Prefix option */
  42 struct iapdprefix {
  43         be32_t lifetime_preferred;
  44         be32_t lifetime_valid;
  45         uint8_t prefixlen;
  46         struct in6_addr address;
  47 } _packed_;
  48
  49 typedef struct DHCP6Address DHCP6Address;
  50
  51 struct DHCP6Address {
  52         LIST_FIELDS(DHCP6Address, addresses);
  53
  54         union {
  55                 struct iaaddr iaaddr;
  56                 struct iapdprefix iapdprefix;
  57         };
  58 };
  59
  60 /* Non-temporary Address option */
  61 struct ia_na {
  62         be32_t id;
  63         be32_t lifetime_t1;
  64         be32_t lifetime_t2;
  65 } _packed_;
  66
  67 /* Prefix Delegation option */
  68 struct ia_pd {
  69         be32_t id;
  70         be32_t lifetime_t1;
  71         be32_t lifetime_t2;
  72 } _packed_;
  73
  74 /* Temporary Address option */
  75 struct ia_ta {
  76         be32_t id;
  77 } _packed_;
  78
  79 struct DHCP6IA {
  80         uint16_t type;
  81         union {
  82                 struct ia_na ia_na;
  83                 struct ia_pd ia_pd;
  84                 struct ia_ta ia_ta;
  85         };
  86
  87         LIST_HEAD(DHCP6Address, addresses);
  88 };
  89
  90 typedef struct DHCP6IA DHCP6IA;
  91
  92 #define log_dhcp6_client_errno(p, error, fmt, ...) log_internal(LOG_DEBUG, error, PROJECT_FILE, __LINE__, __func__, "DHCPv6 CLIENT: " fmt, ##__VA_ARGS__)
  93 #define log_dhcp6_client(p, fmt, ...) log_dhcp6_client_errno(p, 0, fmt, ##__VA_ARGS__)
  94
  95 int dhcp6_option_append(uint8_t **buf, size_t *buflen, uint16_t code,
  96                         size_t optlen, const void *optval);
  97 int dhcp6_option_append_ia(uint8_t **buf, size_t *buflen, const DHCP6IA *ia);
  98 int dhcp6_option_append_pd(uint8_t *buf, size_t len, const DHCP6IA *pd, DHCP6Address *hint_pd_prefix);
  99 int dhcp6_option_append_fqdn(uint8_t **buf, size_t *buflen, const char *fqdn);
 100 int dhcp6_option_append_user_class(uint8_t **buf, size_t *buflen, char **user_class);
 101 int dhcp6_option_append_vendor_class(uint8_t **buf, size_t *buflen, char **user_class);
 102 int dhcp6_option_parse(uint8_t **buf, size_t *buflen, uint16_t *optcode,
 103                        size_t *optlen, uint8_t **optvalue);
 104 int dhcp6_option_parse_status(DHCP6Option *option, size_t len);
 105 int dhcp6_option_parse_ia(DHCP6Option *iaoption, DHCP6IA *ia);
 106 int dhcp6_option_parse_ip6addrs(uint8_t *optval, uint16_t optlen,
 107                                 struct in6_addr **addrs, size_t count,
 108                                 size_t *allocated);
 109 int dhcp6_option_parse_domainname(const uint8_t *optval, uint16_t optlen,
 110                                   char ***str_arr);
 111
 112 int dhcp6_network_bind_udp_socket(int index, struct in6_addr *address);
 113 int dhcp6_network_send_udp_socket(int s, struct in6_addr *address,
 114                                   const void *packet, size_t len);
 115
 116 const char *dhcp6_message_type_to_string(int s) _const_;
 117 int dhcp6_message_type_from_string(const char *s) _pure_;
 118 const char *dhcp6_message_status_to_string(int s) _const_;
 119 int dhcp6_message_status_from_string(const char *s) _pure_;