The customer has a server environment where PXE and HTTP service run in same
Linux Server. In this environment a SUT trying to boot to SLES 15 OS via PXE
from the Boot Menu. After PXE Boot file downloaded and grub Loaded without
continuing for installation Exit is pressed and control back to Setup.
Now the HTTP boot to SLES 15 OS tried in the same environment and failed to
download the file. If there is a reconnect -r performed before this HTTP Boot
then boot file download and installation is getting success.
Root cause of the issue is, when Exit from grub performed, boot Loader Stops
the SNP Driver and starts the same. During this process SNP is in Initialized
State. When HTTP boot is performed immediately after PXE Failure, the MNP
configure method initiates the SNP Start again. Since the SNP already started
by grub it returns EFI_ALREADY_STARTED and none of the upper Layer drivers are
getting started.
As a work around in MNPConfigure(), if the SNP Start failed with Already
Started and in Initialized state we can return success so that rest of the
drivers can be loaded and HTTP boot can work.
Cc: Saloni Kasbekar <saloni.kasbe...@intel.com>
Cc: Zachary Clark-williams <zachary.clark-willi...@intel.com>
Signed-off-by: SanthoshKumar <santhoshkum...@ami.com>
---
NetworkPkg/MnpDxe/MnpConfig.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/NetworkPkg/MnpDxe/MnpConfig.c b/NetworkPkg/MnpDxe/MnpConfig.c
index 93587d53aa..0f2df28d73 100644
--- a/NetworkPkg/MnpDxe/MnpConfig.c
+++ b/NetworkPkg/MnpDxe/MnpConfig.c
@@ -1120,7 +1120,9 @@ MnpStartSnp (
// Start the simple network.
//
Status = Snp->Start (Snp);
-
+ if ((Status == EFI_ALREADY_STARTED ) && (Snp->Mode->State ==
EfiSimpleNetworkInitialized)) {
+ return EFI_SUCCESS;
+ }
if (!EFI_ERROR (Status)) {
//
// Initialize the simple network.
--
2.42.0.windows.2
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