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 "hashmap.h"
  15 #include "macro.h"
  16 #include "sparse-endian.h"
  17
  18 typedef struct sd_dhcp6_option {
  19         unsigned n_ref;
  20
  21         uint32_t enterprise_identifier;
  22         uint16_t option;
  23         void *data;
  24         size_t length;
  25 } sd_dhcp6_option;
  26
  27 extern const struct hash_ops dhcp6_option_hash_ops;
  28
  29 /* Common option header */
  30 typedef struct DHCP6Option {
  31         be16_t code;
  32         be16_t len;
  33         uint8_t data[];
  34 } _packed_ DHCP6Option;
  35
  36 /* Address option */
  37 struct iaaddr {
  38         struct in6_addr address;
  39         be32_t lifetime_preferred;
  40         be32_t lifetime_valid;
  41 } _packed_;
  42
  43 /* Prefix Delegation Prefix option */
  44 struct iapdprefix {
  45         be32_t lifetime_preferred;
  46         be32_t lifetime_valid;
  47         uint8_t prefixlen;
  48         struct in6_addr address;
  49 } _packed_;
  50
  51 typedef struct DHCP6Address DHCP6Address;
  52
  53 struct DHCP6Address {
  54         LIST_FIELDS(DHCP6Address, addresses);
  55
  56         union {
  57                 struct iaaddr iaaddr;
  58                 struct iapdprefix iapdprefix;
  59         };
  60 };
  61
  62 /* Non-temporary Address option */
  63 struct ia_na {
  64         be32_t id;
  65         be32_t lifetime_t1;
  66         be32_t lifetime_t2;
  67 } _packed_;
  68
  69 /* Prefix Delegation option */
  70 struct ia_pd {
  71         be32_t id;
  72         be32_t lifetime_t1;
  73         be32_t lifetime_t2;
  74 } _packed_;
  75
  76 /* Temporary Address option */
  77 struct ia_ta {
  78         be32_t id;
  79 } _packed_;
  80
  81 struct DHCP6IA {
  82         uint16_t type;
  83         union {
  84                 struct ia_na ia_na;
  85                 struct ia_pd ia_pd;
  86                 struct ia_ta ia_ta;
  87         };
  88
  89         LIST_HEAD(DHCP6Address, addresses);
  90 };
  91
  92 typedef struct DHCP6IA DHCP6IA;
  93
  94 #define log_dhcp6_client_errno(p, error, fmt, ...) log_internal(LOG_DEBUG, error, PROJECT_FILE, __LINE__, __func__, "DHCPv6 CLIENT: " fmt, ##__VA_ARGS__)
  95 #define log_dhcp6_client(p, fmt, ...) log_dhcp6_client_errno(p, 0, fmt, ##__VA_ARGS__)
  96
  97 int dhcp6_option_append(uint8_t **buf, size_t *buflen, uint16_t code,
  98                         size_t optlen, const void *optval);
  99 int dhcp6_option_append_ia(uint8_t **buf, size_t *buflen, const DHCP6IA *ia);
 100 int dhcp6_option_append_pd(uint8_t *buf, size_t len, const DHCP6IA *pd, DHCP6Address *hint_pd_prefix);
 101 int dhcp6_option_append_fqdn(uint8_t **buf, size_t *buflen, const char *fqdn);
 102 int dhcp6_option_append_user_class(uint8_t **buf, size_t *buflen, char **user_class);
 103 int dhcp6_option_append_vendor_class(uint8_t **buf, size_t *buflen, char **user_class);
 104 int dhcp6_option_append_vendor_option(uint8_t **buf, size_t *buflen, OrderedHashmap *vendor_options);
 105 int dhcp6_option_parse(uint8_t **buf, size_t *buflen, uint16_t *optcode,
 106                        size_t *optlen, uint8_t **optvalue);
 107 int dhcp6_option_parse_status(DHCP6Option *option, size_t len);
 108 int dhcp6_option_parse_ia(DHCP6Option *iaoption, DHCP6IA *ia, uint16_t *ret_status_code);
 109 int dhcp6_option_parse_ip6addrs(uint8_t *optval, uint16_t optlen,
 110                                 struct in6_addr **addrs, size_t count,
 111                                 size_t *allocated);
 112 int dhcp6_option_parse_domainname_list(const uint8_t *optval, uint16_t optlen,
 113                                        char ***str_arr);
 114 int dhcp6_option_parse_domainname(const uint8_t *optval, uint16_t optlen, char **str);
 115
 116 int dhcp6_network_bind_udp_socket(int ifindex, struct in6_addr *address);
 117 int dhcp6_network_send_udp_socket(int s, struct in6_addr *address,
 118                                   const void *packet, size_t len);
 119
 120 const char *dhcp6_message_type_to_string(int s) _const_;
 121 int dhcp6_message_type_from_string(const char *s) _pure_;
 122 const char *dhcp6_message_status_to_string(int s) _const_;
 123 int dhcp6_message_status_from_string(const char *s) _pure_;