Mcast_ip_to_mac.c

Go to the documentation of this file.

 
#include "Snp.h"
 
EFI_STATUS
PxeIp2Mac (
  IN SNP_DRIVER           *Snp,
  IN BOOLEAN              IPv6,
  IN EFI_IP_ADDRESS       *IP,
  IN OUT EFI_MAC_ADDRESS  *MAC
  )
{
  PXE_CPB_MCAST_IP_TO_MAC  *Cpb;
  PXE_DB_MCAST_IP_TO_MAC   *Db;
 
  Cpb              = Snp->Cpb;
  Db               = Snp->Db;
  Snp->Cdb.OpCode  = PXE_OPCODE_MCAST_IP_TO_MAC;
  Snp->Cdb.OpFlags = (UINT16)(IPv6 ? PXE_OPFLAGS_MCAST_IPV6_TO_MAC : PXE_OPFLAGS_MCAST_IPV4_TO_MAC);
  Snp->Cdb.CPBsize = (UINT16)sizeof (PXE_CPB_MCAST_IP_TO_MAC);
  Snp->Cdb.DBsize  = (UINT16)sizeof (PXE_DB_MCAST_IP_TO_MAC);
 
  Snp->Cdb.CPBaddr = (UINT64)(UINTN)Cpb;
  Snp->Cdb.DBaddr  = (UINT64)(UINTN)Db;
 
  Snp->Cdb.StatCode  = PXE_STATCODE_INITIALIZE;
  Snp->Cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
  Snp->Cdb.IFnum     = Snp->IfNum;
  Snp->Cdb.Control   = PXE_CONTROL_LAST_CDB_IN_LIST;
 
  CopyMem (&Cpb->IP, IP, sizeof (PXE_IP_ADDR));
 
  //
  // Issue UNDI command and check result.
  //
  DEBUG ((DEBUG_NET, "\nSnp->undi.mcast_ip_to_mac()  "));
 
  (*Snp->IssueUndi32Command)((UINT64)(UINTN)&Snp->Cdb);
 
  switch (Snp->Cdb.StatCode) {
    case PXE_STATCODE_SUCCESS:
      break;
 
    case PXE_STATCODE_INVALID_CPB:
      return EFI_INVALID_PARAMETER;
 
    case PXE_STATCODE_UNSUPPORTED:
      DEBUG (
        (DEBUG_NET,
         "\nSnp->undi.mcast_ip_to_mac()  %xh:%xh\n",
         Snp->Cdb.StatFlags,
         Snp->Cdb.StatCode)
        );
      return EFI_UNSUPPORTED;
 
    default:
      //
      // UNDI command failed.  Return EFI_DEVICE_ERROR
      // to caller.
      //
      DEBUG (
        (DEBUG_NET,
         "\nSnp->undi.mcast_ip_to_mac()  %xh:%xh\n",
         Snp->Cdb.StatFlags,
         Snp->Cdb.StatCode)
        );
 
      return EFI_DEVICE_ERROR;
  }
 
  CopyMem (MAC, &Db->MAC, sizeof (PXE_MAC_ADDR));
  return EFI_SUCCESS;
}
 
EFI_STATUS
EFIAPI
SnpUndi32McastIpToMac (
  IN EFI_SIMPLE_NETWORK_PROTOCOL  *This,
  IN BOOLEAN                      IPv6,
  IN EFI_IP_ADDRESS               *IP,
  OUT EFI_MAC_ADDRESS             *MAC
  )
{
  SNP_DRIVER  *Snp;
  EFI_TPL     OldTpl;
  EFI_STATUS  Status;
 
  //
  // Get pointer to SNP driver instance for *this.
  //
  if (This == NULL) {
    return EFI_INVALID_PARAMETER;
  }
 
  if ((IP == NULL) || (MAC == NULL)) {
    return EFI_INVALID_PARAMETER;
  }
 
  Snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (This);
 
  OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
 
  switch (Snp->Mode.State) {
    case EfiSimpleNetworkInitialized:
      break;
 
    case EfiSimpleNetworkStopped:
      Status = EFI_NOT_STARTED;
      goto ON_EXIT;
 
    default:
      Status = EFI_DEVICE_ERROR;
      goto ON_EXIT;
  }
 
  Status = PxeIp2Mac (Snp, IPv6, IP, MAC);
 
ON_EXIT:
  gBS->RestoreTPL (OldTpl);
 
  return Status;
}