EdkModulePkg/Universal/Network/Snp32_64/Dxe/mcast_ip_to_mac.c

   1 /*++
   2 Copyright (c) 2006, Intel Corporation
   3 All rights reserved. This program and the accompanying materials
   4 are licensed and made available under the terms and conditions of the BSD License
   5 which accompanies this distribution.  The full text of the license may be found at
   6 http://opensource.org/licenses/bsd-license.php
   7
   8 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
   9 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  10
  11 Module name:
  12   mcast_ip_to_mac.c
  13
  14 Abstract:
  15
  16 Revision history:
  17   2000-Feb-17 M(f)J   Genesis.
  18 --*/
  19
  20
  21 #include "Snp.h"
  22
  23 EFI_STATUS
  24 pxe_ip2mac (
  25   IN SNP_DRIVER          *snp,
  26   IN BOOLEAN             IPv6,
  27   IN EFI_IP_ADDRESS      *IP,
  28   IN OUT EFI_MAC_ADDRESS *MAC
  29   )
  30 /*++
  31
  32 Routine Description:
  33  this routine calls undi to convert an multicast IP address to a MAC address
  34
  35 Arguments:
  36   snp  - pointer to snp driver structure
  37   IPv6  - flag to indicate if this is an ipv6 address
  38   IP    - multicast IP address
  39   MAC   - pointer to hold the return MAC address
  40
  41 Returns:
  42
  43 --*/
  44 {
  45   PXE_CPB_MCAST_IP_TO_MAC *cpb;
  46   PXE_DB_MCAST_IP_TO_MAC  *db;
  47
  48   cpb                 = snp->cpb;
  49   db                  = snp->db;
  50   snp->cdb.OpCode     = PXE_OPCODE_MCAST_IP_TO_MAC;
  51   snp->cdb.OpFlags    = (UINT16) (IPv6 ? PXE_OPFLAGS_MCAST_IPV6_TO_MAC : PXE_OPFLAGS_MCAST_IPV4_TO_MAC);
  52   snp->cdb.CPBsize    = sizeof (PXE_CPB_MCAST_IP_TO_MAC);
  53   snp->cdb.DBsize     = sizeof (PXE_DB_MCAST_IP_TO_MAC);
  54
  55   snp->cdb.CPBaddr    = (UINT64) (UINTN) cpb;
  56   snp->cdb.DBaddr     = (UINT64) (UINTN) db;
  57
  58   snp->cdb.StatCode   = PXE_STATCODE_INITIALIZE;
  59   snp->cdb.StatFlags  = PXE_STATFLAGS_INITIALIZE;
  60   snp->cdb.IFnum      = snp->if_num;
  61   snp->cdb.Control    = PXE_CONTROL_LAST_CDB_IN_LIST;
  62
  63   CopyMem (&cpb->IP, IP, sizeof (PXE_IP_ADDR));
  64
  65   //
  66   // Issue UNDI command and check result.
  67   //
  68   DEBUG ((EFI_D_NET, "\nsnp->undi.mcast_ip_to_mac()  "));
  69
  70   (*snp->issue_undi32_command) ((UINT64) (UINTN) &snp->cdb);
  71
  72   switch (snp->cdb.StatCode) {
  73   case PXE_STATCODE_SUCCESS:
  74     break;
  75
  76   case PXE_STATCODE_INVALID_CPB:
  77     return EFI_INVALID_PARAMETER;
  78
  79   case PXE_STATCODE_UNSUPPORTED:
  80     DEBUG (
  81       (EFI_D_NET,
  82       "\nsnp->undi.mcast_ip_to_mac()  %xh:%xh\n",
  83       snp->cdb.StatFlags,
  84       snp->cdb.StatCode)
  85       );
  86     return EFI_UNSUPPORTED;
  87
  88   default:
  89     //
  90     // UNDI command failed.  Return EFI_DEVICE_ERROR
  91     // to caller.
  92     //
  93     DEBUG (
  94       (EFI_D_NET,
  95       "\nsnp->undi.mcast_ip_to_mac()  %xh:%xh\n",
  96       snp->cdb.StatFlags,
  97       snp->cdb.StatCode)
  98       );
  99
 100     return EFI_DEVICE_ERROR;
 101   }
 102
 103   CopyMem (MAC, &db->MAC, sizeof (PXE_MAC_ADDR));
 104   return EFI_SUCCESS;
 105 }
 106
 107 EFI_STATUS
 108 EFIAPI
 109 snp_undi32_mcast_ip_to_mac (
 110   IN EFI_SIMPLE_NETWORK_PROTOCOL *this,
 111   IN BOOLEAN                     IPv6,
 112   IN EFI_IP_ADDRESS              *IP,
 113   OUT EFI_MAC_ADDRESS            *MAC
 114   )
 115 /*++
 116
 117 Routine Description:
 118  This is the SNP interface routine for converting a multicast IP address to
 119  a MAC address.
 120  This routine basically retrieves snp structure, checks the SNP state and
 121  calls the pxe_ip2mac routine to actually do the conversion
 122
 123 Arguments:
 124   this  - context pointer
 125   IPv6  - flag to indicate if this is an ipv6 address
 126   IP    - multicast IP address
 127   MAC   - pointer to hold the return MAC address
 128
 129 Returns:
 130
 131 --*/
 132 {
 133   SNP_DRIVER  *snp;
 134
 135   //
 136   // Get pointer to SNP driver instance for *this.
 137   //
 138   if (this == NULL) {
 139     return EFI_INVALID_PARAMETER;
 140   }
 141
 142   snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);
 143
 144   if (snp == NULL) {
 145     return EFI_DEVICE_ERROR;
 146   }
 147
 148   switch (snp->mode.State) {
 149   case EfiSimpleNetworkInitialized:
 150     break;
 151
 152   case EfiSimpleNetworkStopped:
 153     return EFI_NOT_STARTED;
 154
 155   case EfiSimpleNetworkStarted:
 156     return EFI_DEVICE_ERROR;
 157
 158   default:
 159     return EFI_DEVICE_ERROR;
 160   }
 161
 162   if (IP == NULL || MAC == NULL) {
 163     return EFI_INVALID_PARAMETER;
 164   }
 165
 166   return pxe_ip2mac (snp, IPv6, IP, MAC);
 167 }