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 STATIC
  24 EFI_STATUS
  25 pxe_ip2mac (
  26   IN SNP_DRIVER          *snp,
  27   IN BOOLEAN             IPv6,
  28   IN EFI_IP_ADDRESS      *IP,
  29   IN OUT EFI_MAC_ADDRESS *MAC
  30   )
  31 /*++
  32
  33 Routine Description:
  34  this routine calls undi to convert an multicast IP address to a MAC address
  35
  36 Arguments:
  37   snp  - pointer to snp driver structure
  38   IPv6  - flag to indicate if this is an ipv6 address
  39   IP    - multicast IP address
  40   MAC   - pointer to hold the return MAC address
  41
  42 Returns:
  43
  44 --*/
  45 {
  46   PXE_CPB_MCAST_IP_TO_MAC *cpb;
  47   PXE_DB_MCAST_IP_TO_MAC  *db;
  48
  49   cpb                 = snp->cpb;
  50   db                  = snp->db;
  51   snp->cdb.OpCode     = PXE_OPCODE_MCAST_IP_TO_MAC;
  52   snp->cdb.OpFlags    = (UINT16) (IPv6 ? PXE_OPFLAGS_MCAST_IPV6_TO_MAC : PXE_OPFLAGS_MCAST_IPV4_TO_MAC);
  53   snp->cdb.CPBsize    = sizeof (PXE_CPB_MCAST_IP_TO_MAC);
  54   snp->cdb.DBsize     = sizeof (PXE_DB_MCAST_IP_TO_MAC);
  55
  56   snp->cdb.CPBaddr    = (UINT64) (UINTN) cpb;
  57   snp->cdb.DBaddr     = (UINT64) (UINTN) db;
  58
  59   snp->cdb.StatCode   = PXE_STATCODE_INITIALIZE;
  60   snp->cdb.StatFlags  = PXE_STATFLAGS_INITIALIZE;
  61   snp->cdb.IFnum      = snp->if_num;
  62   snp->cdb.Control    = PXE_CONTROL_LAST_CDB_IN_LIST;
  63
  64   CopyMem (&cpb->IP, IP, sizeof (PXE_IP_ADDR));
  65
  66   //
  67   // Issue UNDI command and check result.
  68   //
  69   DEBUG ((EFI_D_NET, "\nsnp->undi.mcast_ip_to_mac()  "));
  70
  71   (*snp->issue_undi32_command) ((UINT64) (UINTN) &snp->cdb);
  72
  73   switch (snp->cdb.StatCode) {
  74   case PXE_STATCODE_SUCCESS:
  75     break;
  76
  77   case PXE_STATCODE_INVALID_CPB:
  78     return EFI_INVALID_PARAMETER;
  79
  80   case PXE_STATCODE_UNSUPPORTED:
  81     DEBUG (
  82       (EFI_D_NET,
  83       "\nsnp->undi.mcast_ip_to_mac()  %xh:%xh\n",
  84       snp->cdb.StatFlags,
  85       snp->cdb.StatCode)
  86       );
  87     return EFI_UNSUPPORTED;
  88
  89   default:
  90     //
  91     // UNDI command failed.  Return EFI_DEVICE_ERROR
  92     // to caller.
  93     //
  94     DEBUG (
  95       (EFI_D_NET,
  96       "\nsnp->undi.mcast_ip_to_mac()  %xh:%xh\n",
  97       snp->cdb.StatFlags,
  98       snp->cdb.StatCode)
  99       );
 100
 101     return EFI_DEVICE_ERROR;
 102   }
 103
 104   CopyMem (MAC, &db->MAC, sizeof (PXE_MAC_ADDR));
 105   return EFI_SUCCESS;
 106 }
 107
 108 EFI_STATUS
 109 EFIAPI
 110 snp_undi32_mcast_ip_to_mac (
 111   IN EFI_SIMPLE_NETWORK_PROTOCOL *this,
 112   IN BOOLEAN                     IPv6,
 113   IN EFI_IP_ADDRESS              *IP,
 114   OUT EFI_MAC_ADDRESS            *MAC
 115   )
 116 /*++
 117
 118 Routine Description:
 119  This is the SNP interface routine for converting a multicast IP address to
 120  a MAC address.
 121  This routine basically retrieves snp structure, checks the SNP state and
 122  calls the pxe_ip2mac routine to actually do the conversion
 123
 124 Arguments:
 125   this  - context pointer
 126   IPv6  - flag to indicate if this is an ipv6 address
 127   IP    - multicast IP address
 128   MAC   - pointer to hold the return MAC address
 129
 130 Returns:
 131
 132 --*/
 133 {
 134   SNP_DRIVER  *snp;
 135
 136   //
 137   // Get pointer to SNP driver instance for *this.
 138   //
 139   if (this == NULL) {
 140     return EFI_INVALID_PARAMETER;
 141   }
 142
 143   snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);
 144
 145   if (snp == NULL) {
 146     return EFI_DEVICE_ERROR;
 147   }
 148
 149   switch (snp->mode.State) {
 150   case EfiSimpleNetworkInitialized:
 151     break;
 152
 153   case EfiSimpleNetworkStopped:
 154     return EFI_NOT_STARTED;
 155
 156   case EfiSimpleNetworkStarted:
 157     return EFI_DEVICE_ERROR;
 158
 159   default:
 160     return EFI_DEVICE_ERROR;
 161   }
 162
 163   if (IP == NULL || MAC == NULL) {
 164     return EFI_INVALID_PARAMETER;
 165   }
 166
 167   return pxe_ip2mac (snp, IPv6, IP, MAC);
 168 }