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Update DHCP to use data-xfer interface (not yet tested).

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This commit is contained in:
Michael Brown
2007-06-27 23:20:36 +01:00
parent f77815f2b1
commit 07dc294de8
8 changed files with 250 additions and 148 deletions
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63
src/include/gpxe/dhcp.h
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@@ -10,9 +10,10 @@
#include <stdint.h>
#include <gpxe/list.h>
#include <gpxe/in.h>
#include <gpxe/udp.h>
#include <gpxe/async.h>
#include <gpxe/retry.h>
#include <gpxe/refcnt.h>
struct net_device;
struct job_interface;
/** BOOTP/DHCP server port */
#define BOOTPS_PORT 67
@@ -312,6 +313,8 @@ struct dhcp_option {
/** A DHCP options block */
struct dhcp_option_block {
/** Reference counter */
struct refcnt refcnt;
/** List of option blocks */
struct list_head list;
/** Option block raw data */
@@ -413,6 +416,13 @@ struct dhcphdr {
/** DHCP magic cookie */
#define DHCP_MAGIC_COOKIE 0x63825363UL
/** DHCP minimum packet length
*
* This is the mandated minimum packet length that a DHCP participant
* must be prepared to receive.
*/
#define DHCP_MIN_LEN 552
/** DHCP packet option block fill order
*
* This is the order in which option blocks are filled when
@@ -448,30 +458,27 @@ struct dhcp_packet {
struct dhcp_option_block options[NUM_OPT_BLOCKS];
};
struct udp_connection {};
/**
* Get reference to DHCP options block
*
* @v options DHCP options block
* @ret options DHCP options block
*/
static inline __attribute__ (( always_inline )) struct dhcp_option_block *
dhcpopt_get ( struct dhcp_option_block *options ) {
ref_get ( &options->refcnt );
return options;
}
/** A DHCP session */
struct dhcp_session {
/** UDP connection for this session */
struct udp_connection udp;
/** Network device being configured */
struct net_device *netdev;
/** Options obtained from server */
struct dhcp_option_block *options;
/** State of the session
*
* This is a value for the @c DHCP_MESSAGE_TYPE option
* (e.g. @c DHCPDISCOVER).
*/
int state;
/** Asynchronous operation for this DHCP session */
struct async async;
/** Retransmission timer */
struct retry_timer timer;
};
/**
* Drop reference to DHCP options block
*
* @v options DHCP options block
*/
static inline __attribute__ (( always_inline )) void
dhcpopt_put ( struct dhcp_option_block *options ) {
ref_put ( &options->refcnt );
}
extern unsigned long dhcp_num_option ( struct dhcp_option *option );
extern void dhcp_ipv4_option ( struct dhcp_option *option,
@@ -485,7 +492,6 @@ extern void unregister_dhcp_options ( struct dhcp_option_block *options );
extern void init_dhcp_options ( struct dhcp_option_block *options,
void *data, size_t max_len );
extern struct dhcp_option_block * alloc_dhcp_options ( size_t max_len );
extern void free_dhcp_options ( struct dhcp_option_block *options );
extern struct dhcp_option *
set_dhcp_option ( struct dhcp_option_block *options, unsigned int tag,
const void *data, size_t len );
@@ -506,6 +512,7 @@ extern int create_dhcp_packet ( struct net_device *netdev, uint8_t msgtype,
struct dhcp_packet *dhcppkt );
extern int copy_dhcp_packet_options ( struct dhcp_packet *dhcppkt,
struct dhcp_option_block *options );
extern int start_dhcp ( struct dhcp_session *dhcp, struct async *parent );
extern int start_dhcp ( struct job_interface *job, struct net_device *netdev,
int (*register_options) ( struct dhcp_option_block * ));
#endif /* _GPXE_DHCP_H */