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[pxe] Skip PXE boot server discovery if directed to do so

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Option 43.6 can direct us to skip PXE boot server discovery and just
perform a standard DHCP filename boot.
This commit is contained in:
Michael Brown
2009-02-03 02:46:06 +00:00
parent 4b276b8df9
commit ff2b308506
2 changed files with 30 additions and 6 deletions
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15
src/include/gpxe/dhcp.h
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@@ -82,6 +82,21 @@ struct dhcp_packet;
/** Vendor encapsulated options */
#define DHCP_VENDOR_ENCAP 43
/** PXE boot server discovery control */
#define DHCP_PXE_DISCOVERY_CONTROL DHCP_ENCAP_OPT ( DHCP_VENDOR_ENCAP, 6 )
/** PXE boot server discovery control bits */
enum dhcp_pxe_discovery_control {
/** Inhibit broadcast discovery */
PXEBS_NO_BROADCAST = 1,
/** Inhibit multicast discovery */
PXEBS_NO_MULTICAST = 2,
/** Accept only servers in DHCP_PXE_BOOT_SERVERS list */
PXEBS_NO_UNKNOWN_SERVERS = 4,
/** Skip discovery if filename present */
PXEBS_SKIP = 8,
};
/** PXE boot server multicast address */
#define DHCP_PXE_BOOT_SERVER_MCAST DHCP_ENCAP_OPT ( DHCP_VENDOR_ENCAP, 7 )