SnpStart.c

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#include <Library/UefiBootServicesTableLib.h>
 
#include "VirtioNet.h"
 
EFI_STATUS
EFIAPI
VirtioNetStart (
  IN EFI_SIMPLE_NETWORK_PROTOCOL  *This
  )
{
  VNET_DEV    *Dev;
  EFI_TPL     OldTpl;
  EFI_STATUS  Status;
 
  if (This == NULL) {
    return EFI_INVALID_PARAMETER;
  }
 
  Dev    = VIRTIO_NET_FROM_SNP (This);
  OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
  if (Dev->Snm.State != EfiSimpleNetworkStopped) {
    Status = EFI_ALREADY_STARTED;
  } else {
    Dev->Snm.State = EfiSimpleNetworkStarted;
    Status         = EFI_SUCCESS;
  }
 
  gBS->RestoreTPL (OldTpl);
  return Status;
}