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https://github.com/ipxe/ipxe
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[dhcpv6] Add basic support for stateful and stateless DHCPv6
Add support for the stateful and stateless variants of the DHCPv6
protocol. The resulting settings block is registered as
"net<x>.dhcpv6", and DHCPv6 options can be obtained using
e.g. "${net0.dhcpv6/23:ipv6}" to obtain the IPv6 DNS server address.
IPv6 addresses obtained via stateful DHCPv6 are not yet applied to the
network device.
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
215
src/include/ipxe/dhcpv6.h
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215
src/include/ipxe/dhcpv6.h
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#ifndef _IPXE_DHCPV6_H
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#define _IPXE_DHCPV6_H
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/** @file
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*
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* Dynamic Host Configuration Protocol for IPv6
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*
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <stdint.h>
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#include <ipxe/in.h>
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/** DHCPv6 server port */
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#define DHCPV6_SERVER_PORT 547
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/** DHCPv6 client port */
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#define DHCPV6_CLIENT_PORT 546
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/**
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* A DHCPv6 option
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*
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*/
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struct dhcpv6_option {
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/** Code */
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uint16_t code;
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/** Length of the data field */
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uint16_t len;
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/** Data */
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uint8_t data[0];
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} __attribute__ (( packed ));
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/** DHCP unique identifier based on link-layer address (DUID-LL) */
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struct dhcpv6_duid_ll {
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/** Type */
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uint16_t type;
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/** Hardware type */
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uint16_t htype;
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/** Link-layer address */
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uint8_t ll_addr[0];
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} __attribute__ (( packed ));
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/** DHCP unique identifier based on link-layer address (DUID-LL) */
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#define DHCPV6_DUID_LL 3
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/** DHCPv6 client or server identifier option */
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struct dhcpv6_duid_option {
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/** Option header */
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struct dhcpv6_option header;
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/** DHCP unique identifier (DUID) */
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uint8_t duid[0];
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} __attribute__ (( packed ));
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/** DHCPv6 client identifier option */
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#define DHCPV6_CLIENT_ID 1
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/** DHCPv6 server identifier option */
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#define DHCPV6_SERVER_ID 2
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/** DHCPv6 identity association for non-temporary address (IA_NA) option */
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struct dhcpv6_ia_na_option {
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/** Option header */
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struct dhcpv6_option header;
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/** Identity association identifier (IAID) */
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uint32_t iaid;
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/** Renew time (in seconds) */
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uint32_t renew;
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/** Rebind time (in seconds) */
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uint32_t rebind;
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/** IA_NA options */
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struct dhcpv6_option options[0];
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} __attribute__ (( packed ));
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/** DHCPv6 identity association for non-temporary address (IA_NA) option */
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#define DHCPV6_IA_NA 3
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/** DHCPv6 identity association address (IAADDR) option */
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struct dhcpv6_iaaddr_option {
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/** Option header */
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struct dhcpv6_option header;
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/** IPv6 address */
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struct in6_addr address;
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/** Preferred lifetime (in seconds) */
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uint32_t preferred;
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/** Valid lifetime (in seconds) */
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uint32_t valid;
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/** IAADDR options */
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struct dhcpv6_option options[0];
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} __attribute__ (( packed ));
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/** DHCPv6 identity association address (IAADDR) option */
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#define DHCPV6_IAADDR 5
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/** DHCPv6 option request option */
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struct dhcpv6_option_request_option {
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/** Option header */
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struct dhcpv6_option header;
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/** Requested options */
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uint16_t requested[0];
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} __attribute__ (( packed ));
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/** DHCPv6 option request option */
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#define DHCPV6_OPTION_REQUEST 6
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/** DHCPv6 elapsed time option */
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struct dhcpv6_elapsed_time_option {
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/** Option header */
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struct dhcpv6_option header;
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/** Elapsed time, in centiseconds */
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uint16_t elapsed;
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} __attribute__ (( packed ));
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/** DHCPv6 elapsed time option */
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#define DHCPV6_ELAPSED_TIME 8
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/** DHCPv6 status code option */
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struct dhcpv6_status_code_option {
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/** Option header */
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struct dhcpv6_option header;
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/** Status code */
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uint16_t status;
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/** Status message */
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char message[0];
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} __attribute__ (( packed ));
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/** DHCPv6 status code option */
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#define DHCPV6_STATUS_CODE 13
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/** DHCPv6 user class */
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struct dhcpv6_user_class {
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/** Length */
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uint16_t len;
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/** User class string */
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char string[0];
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} __attribute__ (( packed ));
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/** DHCPv6 user class option */
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struct dhcpv6_user_class_option {
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/** Option header */
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struct dhcpv6_option header;
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/** User class */
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struct dhcpv6_user_class user_class[0];
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} __attribute__ (( packed ));
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/** DHCPv6 user class option */
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#define DHCPV6_USER_CLASS 15
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/** DHCPv6 DNS recursive name server option */
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#define DHCPV6_DNS_SERVER 23
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/** DHCPv6 domain search list option */
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#define DHCPV6_DOMAIN_SEARCH 24
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/**
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* Any DHCPv6 option
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*
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*/
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union dhcpv6_any_option {
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struct dhcpv6_option header;
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struct dhcpv6_duid_option duid;
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struct dhcpv6_ia_na_option ia_na;
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struct dhcpv6_iaaddr_option iaaddr;
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struct dhcpv6_option_request_option option_request;
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struct dhcpv6_elapsed_time_option elapsed_time;
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struct dhcpv6_status_code_option status_code;
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struct dhcpv6_user_class_option user_class;
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};
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/**
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* A DHCPv6 header
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*
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*/
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struct dhcpv6_header {
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/** Message type */
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uint8_t type;
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/** Transaction ID */
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uint8_t xid[3];
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/** Options */
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struct dhcpv6_option options[0];
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} __attribute__ (( packed ));
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/** DHCPv6 solicitation */
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#define DHCPV6_SOLICIT 1
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/** DHCPv6 advertisement */
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#define DHCPV6_ADVERTISE 2
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/** DHCPv6 request */
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#define DHCPV6_REQUEST 3
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/** DHCPv6 reply */
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#define DHCPV6_REPLY 7
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/** DHCPv6 information request */
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#define DHCPV6_INFORMATION_REQUEST 11
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/** DHCPv6 settings block name */
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#define DHCPV6_SETTINGS_NAME "dhcpv6"
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/**
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* Construct all-DHCP-relay-agents-and-servers multicast address
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*
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* @v addr Zeroed address to construct
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*/
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static inline void ipv6_all_dhcp_relay_and_servers ( struct in6_addr *addr ) {
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addr->s6_addr16[0] = htons ( 0xff02 );
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addr->s6_addr[13] = 1;
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addr->s6_addr[15] = 2;
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}
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extern int start_dhcpv6 ( struct interface *job, struct net_device *netdev,
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int stateful );
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#endif /* _IPXE_DHCPV6_H */
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@@ -219,6 +219,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
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#define ERRFILE_socket ( ERRFILE_NET | 0x00380000 )
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#define ERRFILE_icmp ( ERRFILE_NET | 0x00390000 )
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#define ERRFILE_ping ( ERRFILE_NET | 0x003a0000 )
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#define ERRFILE_dhcpv6 ( ERRFILE_NET | 0x003b0000 )
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#define ERRFILE_image ( ERRFILE_IMAGE | 0x00000000 )
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#define ERRFILE_elf ( ERRFILE_IMAGE | 0x00010000 )
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