diff options
Diffstat (limited to 'src/include/gpxe/dhcp.h')
| -rw-r--r-- | src/include/gpxe/dhcp.h | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/include/gpxe/dhcp.h b/src/include/gpxe/dhcp.h index 2d9f8853..ebfe8ede 100644 --- a/src/include/gpxe/dhcp.h +++ b/src/include/gpxe/dhcp.h @@ -16,6 +16,7 @@ FILE_LICENCE ( GPL2_OR_LATER ); #include <gpxe/tables.h> #include <gpxe/uuid.h> #include <gpxe/netdevice.h> +#include <gpxe/uaccess.h> struct job_interface; struct dhcp_options; @@ -332,6 +333,16 @@ struct dhcp_netdev_desc { uint16_t device; } __attribute__ (( packed )); +/** Use cached network settings + * + * Cached network settings may be available from a prior DHCP request + * (if running as a PXE NBP), non-volatile storage on the NIC, or + * settings set via the command line or an embedded image. If this + * flag is not set, it will be assumed that those sources are + * insufficient and that DHCP should still be run when autobooting. + */ +#define DHCP_EB_USE_CACHED DHCP_ENCAP_OPT ( DHCP_EB_ENCAP, 0xb2 ) + /** BIOS drive number * * This is the drive number for a drive emulated via INT 13. 0x80 is @@ -615,4 +626,12 @@ extern int start_dhcp ( struct job_interface *job, struct net_device *netdev ); extern int start_pxebs ( struct job_interface *job, struct net_device *netdev, unsigned int pxe_type ); +/* In environments that can provide cached DHCP packets, this function + * should look for such a packet and call store_cached_dhcpack() with + * it if it exists. + */ +__weak_decl ( void, get_cached_dhcpack, ( void ), (), ); + +extern void store_cached_dhcpack ( userptr_t data, size_t len ); + #endif /* _GPXE_DHCP_H */ |