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