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[dhcpv6] Allow stateful DHCPv6 to apply obtained IPv6 addresses 

Signed-off-by: Michael Brown <mcb30@ipxe.org>
pull/17/head
Michael Brown 2013-11-15 15:23:09 +00:00
parent 6b1eee0452
commit 017e6c56af
1 changed files with 24 additions and 6 deletions
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30
src/net/udp/dhcpv6.c
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@ -35,6 +35,7 @@ FILE_LICENCE ( GPL2_OR_LATER );
#include <ipxe/in.h>
#include <ipxe/crc32.h>
#include <ipxe/errortab.h>
#include <ipxe/ipv6.h>
#include <ipxe/dhcpv6.h>
/** @file
@ -408,16 +409,19 @@ enum dhcpv6_session_state_flags {
/** Include leased IPv6 address within request */
DHCPV6_TX_IAADDR = 0x02,
/** Record received server ID */
DHCPV6_RX_SERVER_ID = 0x04,
DHCPV6_RX_RECORD_SERVER_ID = 0x04,
/** Record received IPv6 address */
DHCPV6_RX_IAADDR = 0x08,
DHCPV6_RX_RECORD_IAADDR = 0x08,
/** Apply received IPv6 address */
DHCPV6_RX_APPLY_IAADDR = 0x10,
};
/** DHCPv6 request state */
static struct dhcpv6_session_state dhcpv6_request = {
.tx_type = DHCPV6_REQUEST,
.rx_type = DHCPV6_REPLY,
.flags = ( DHCPV6_TX_IA_NA | DHCPV6_TX_IAADDR | DHCPV6_RX_IAADDR ),
.flags = ( DHCPV6_TX_IA_NA | DHCPV6_TX_IAADDR |
DHCPV6_RX_RECORD_IAADDR | DHCPV6_RX_APPLY_IAADDR ),
.next = NULL,
};
@ -425,7 +429,8 @@ static struct dhcpv6_session_state dhcpv6_request = {
static struct dhcpv6_session_state dhcpv6_solicit = {
.tx_type = DHCPV6_SOLICIT,
.rx_type = DHCPV6_ADVERTISE,
.flags = ( DHCPV6_TX_IA_NA | DHCPV6_RX_SERVER_ID | DHCPV6_RX_IAADDR ),
.flags = ( DHCPV6_TX_IA_NA | DHCPV6_RX_RECORD_SERVER_ID |
DHCPV6_RX_RECORD_IAADDR ),
.next = &dhcpv6_request,
};
@ -785,7 +790,7 @@ static int dhcpv6_rx ( struct dhcpv6_session *dhcpv6,
}
/* Record identity association address, if applicable */
if ( dhcpv6->state->flags & DHCPV6_RX_IAADDR ) {
if ( dhcpv6->state->flags & DHCPV6_RX_RECORD_IAADDR ) {
if ( ( rc = dhcpv6_iaaddr ( &options, dhcpv6->iaid,
&dhcpv6->lease ) ) != 0 ) {
DBGC ( dhcpv6, "DHCPv6 %s received %s with unusable "
@ -802,7 +807,7 @@ static int dhcpv6_rx ( struct dhcpv6_session *dhcpv6,
}
/* Record server ID, if applicable */
if ( dhcpv6->state->flags & DHCPV6_RX_SERVER_ID ) {
if ( dhcpv6->state->flags & DHCPV6_RX_RECORD_SERVER_ID ) {
assert ( dhcpv6->server_duid == NULL );
option = dhcpv6_option ( &options, DHCPV6_SERVER_ID );
if ( ! option ) {
@ -822,6 +827,19 @@ static int dhcpv6_rx ( struct dhcpv6_session *dhcpv6,
dhcpv6->server_duid_len );
}
/* Apply identity association address, if applicable */
if ( dhcpv6->state->flags & DHCPV6_RX_APPLY_IAADDR ) {
if ( ( rc = ipv6_set_address ( dhcpv6->netdev,
&dhcpv6->lease ) ) != 0 ) {
DBGC ( dhcpv6, "DHCPv6 %s could not apply %s: %s\n",
dhcpv6->netdev->name,
inet6_ntoa ( &dhcpv6->lease ), strerror ( rc ) );
/* This is plausibly the error we want to return */
dhcpv6->rc = rc;
goto done;
}
}
/* Transition to next state or complete DHCPv6, as applicable */
if ( dhcpv6->state->next ) {