73c8ced784
```
21.16. Vendor Class Option
This option is used by a client to identify the vendor that
manufactured the hardware on which the client is running. The
information contained in the data area of this option is contained in
one or more opaque fields that identify details of the hardware
configuration. The format of the Vendor Class option is:
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| OPTION_VENDOR_CLASS | option-len |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| enterprise-number |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
. .
. vendor-class-data .
. . . . .
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
Figure 28: Vendor Class Option Format
option-code OPTION_VENDOR_CLASS (16).
option-len 4 + length of vendor-class-data field.
enterprise-number The vendor's registered Enterprise Number as
maintained by IANA [IANA-PEN]. A 4-octet
field containing an unsigned integer.
vendor-class-data The hardware configuration of the node on
which the client is running. A
variable-length field (4 octets less than the
value in the option-len field).
The vendor-class-data field is composed of a series of separate
items, each of which describes some characteristic of the client's
hardware configuration. Examples of vendor-class-data instances
might include the version of the operating system the client is
running or the amount of memory installed on the client.
Each instance of vendor-class-data is formatted as follows:
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-...-+-+-+-+-+-+-+
| vendor-class-len | opaque-data |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-...-+-+-+-+-+-+-+
Figure 29: Format of vendor-class-data Field
The vendor-class-len field is 2 octets long and specifies the length
of the opaque vendor-class-data in network byte order.
Servers and clients MUST NOT include more than one instance of
OPTION_VENDOR_CLASS with the same Enterprise Number. Each instance
of OPTION_VENDOR_CLASS can carry multiple vendor-class-data
instances.
```
120 lines
3.5 KiB
C
120 lines
3.5 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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#pragma once
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/***
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Copyright © 2014-2015 Intel Corporation. All rights reserved.
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***/
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#include <net/ethernet.h>
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#include <netinet/in.h>
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#include "sd-event.h"
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#include "list.h"
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#include "macro.h"
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#include "sparse-endian.h"
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typedef struct sd_dhcp6_option {
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unsigned n_ref;
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uint16_t option;
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void *data;
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size_t length;
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} sd_dhcp6_option;
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extern const struct hash_ops dhcp6_option_hash_ops;
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/* Common option header */
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typedef struct DHCP6Option {
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be16_t code;
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be16_t len;
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uint8_t data[];
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} _packed_ DHCP6Option;
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/* Address option */
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struct iaaddr {
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struct in6_addr address;
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be32_t lifetime_preferred;
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be32_t lifetime_valid;
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} _packed_;
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/* Prefix Delegation Prefix option */
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struct iapdprefix {
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be32_t lifetime_preferred;
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be32_t lifetime_valid;
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uint8_t prefixlen;
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struct in6_addr address;
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} _packed_;
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typedef struct DHCP6Address DHCP6Address;
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struct DHCP6Address {
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LIST_FIELDS(DHCP6Address, addresses);
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union {
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struct iaaddr iaaddr;
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struct iapdprefix iapdprefix;
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};
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};
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/* Non-temporary Address option */
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struct ia_na {
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be32_t id;
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be32_t lifetime_t1;
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be32_t lifetime_t2;
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} _packed_;
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/* Prefix Delegation option */
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struct ia_pd {
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be32_t id;
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be32_t lifetime_t1;
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be32_t lifetime_t2;
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} _packed_;
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/* Temporary Address option */
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struct ia_ta {
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be32_t id;
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} _packed_;
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struct DHCP6IA {
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uint16_t type;
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union {
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struct ia_na ia_na;
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struct ia_pd ia_pd;
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struct ia_ta ia_ta;
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};
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LIST_HEAD(DHCP6Address, addresses);
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};
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typedef struct DHCP6IA DHCP6IA;
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#define log_dhcp6_client_errno(p, error, fmt, ...) log_internal(LOG_DEBUG, error, PROJECT_FILE, __LINE__, __func__, "DHCPv6 CLIENT: " fmt, ##__VA_ARGS__)
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#define log_dhcp6_client(p, fmt, ...) log_dhcp6_client_errno(p, 0, fmt, ##__VA_ARGS__)
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int dhcp6_option_append(uint8_t **buf, size_t *buflen, uint16_t code,
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size_t optlen, const void *optval);
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int dhcp6_option_append_ia(uint8_t **buf, size_t *buflen, const DHCP6IA *ia);
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int dhcp6_option_append_pd(uint8_t *buf, size_t len, const DHCP6IA *pd, DHCP6Address *hint_pd_prefix);
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int dhcp6_option_append_fqdn(uint8_t **buf, size_t *buflen, const char *fqdn);
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int dhcp6_option_append_user_class(uint8_t **buf, size_t *buflen, char **user_class);
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int dhcp6_option_append_vendor_class(uint8_t **buf, size_t *buflen, char **user_class);
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int dhcp6_option_parse(uint8_t **buf, size_t *buflen, uint16_t *optcode,
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size_t *optlen, uint8_t **optvalue);
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int dhcp6_option_parse_status(DHCP6Option *option, size_t len);
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int dhcp6_option_parse_ia(DHCP6Option *iaoption, DHCP6IA *ia);
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int dhcp6_option_parse_ip6addrs(uint8_t *optval, uint16_t optlen,
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struct in6_addr **addrs, size_t count,
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size_t *allocated);
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int dhcp6_option_parse_domainname(const uint8_t *optval, uint16_t optlen,
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char ***str_arr);
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int dhcp6_network_bind_udp_socket(int index, struct in6_addr *address);
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int dhcp6_network_send_udp_socket(int s, struct in6_addr *address,
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const void *packet, size_t len);
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const char *dhcp6_message_type_to_string(int s) _const_;
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int dhcp6_message_type_from_string(const char *s) _pure_;
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const char *dhcp6_message_status_to_string(int s) _const_;
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int dhcp6_message_status_from_string(const char *s) _pure_;
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