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[cachedhcp] Allow cached DHCPACK to apply to temporary network devices

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Retain a reference to the cached DHCPACK until the late startup phase,
and allow it to be recycled for reuse.  This allows the cached DHCPACK
to be used for a temporary MNP network device and then subsequently
reused for the corresponding real network device.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2024-04-02 19:36:00 +01:00
parent b66f6025fa
commit b940d54235
3 changed files with 71 additions and 10 deletions
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4
src/drivers/net/efi/mnpnet.c
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@@ -34,6 +34,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#include <ipxe/iobuf.h>
#include <ipxe/netdevice.h>
#include <ipxe/ethernet.h>
#include <ipxe/cachedhcp.h>
#include <ipxe/efi/efi.h>
#include <ipxe/efi/efi_driver.h>
#include <ipxe/efi/efi_service.h>
@@ -551,6 +552,9 @@ void mnptemp_destroy ( struct net_device *netdev ) {
struct mnp_nic *mnp = netdev->priv;
struct efi_device *efidev = mnp->efidev;
/* Recycle any cached DHCP packet */
cachedhcp_recycle ( netdev );
/* Stop temporary network device */
mnpnet_stop ( efidev );