For network dynamic media support:

1. add library function NetLibDetectMedia to NetLib for media detection
2. update MnpDxe to periodically poll for media status update and check for media status before packet transmit
3. update Ip4Dxe to return ModeData using Mnp->GetModeData()
4. update IScsiDxe to check for media status before try to do DHCP and session login
5. update UefiPxeBcDxe to check for media status before PXE start

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@9919 6f19259b-4bc3-4df7-8a09-765794883524

1 files changed, 10 insertions, 0 deletions

diff --git a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
index df9d2df5be..f0fc48f8ac 100644
--- a/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
+++ b/MdeModulePkg/Universal/Network/UefiPxeBcDxe/PxeBcImpl.c
@@ -2585,6 +2585,7 @@ EfiPxeLoadFile (
   BOOLEAN                     NewMakeCallback;

   EFI_STATUS                  Status;

   UINT64                      TmpBufSize;

+  BOOLEAN                     MediaPresent;

 

   Private         = PXEBC_PRIVATE_DATA_FROM_LOADFILE (This);

   PxeBc           = &Private->PxeBc;

@@ -2603,6 +2604,15 @@ EfiPxeLoadFile (
     return EFI_UNSUPPORTED;

   }

 

+  //

+  // Check media status before PXE start

+  //

+  MediaPresent = TRUE;

+  NetLibDetectMedia (Private->Controller, &MediaPresent);

+  if (!MediaPresent) {

+    return EFI_NO_MEDIA;

+  }

+

   Status = PxeBc->Start (PxeBc, FALSE);

   if (EFI_ERROR (Status) && (Status != EFI_ALREADY_STARTED)) {

     return Status;