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vanjeff
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/** @file
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Copyright (c) 2004 - 2007, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module name:
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mcast_ip_to_mac.c
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Abstract:
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Revision history:
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2000-Feb-17 M(f)J Genesis.
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**/
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#include "Snp.h"
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/**
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this routine calls undi to convert an multicast IP address to a MAC address
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@param snp pointer to snp driver structure
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@param IPv6 flag to indicate if this is an ipv6 address
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@param IP multicast IP address
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@param MAC pointer to hold the return MAC address
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**/
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STATIC
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EFI_STATUS
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pxe_ip2mac (
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IN SNP_DRIVER *snp,
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IN BOOLEAN IPv6,
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IN EFI_IP_ADDRESS *IP,
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IN OUT EFI_MAC_ADDRESS *MAC
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)
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{
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PXE_CPB_MCAST_IP_TO_MAC *cpb;
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PXE_DB_MCAST_IP_TO_MAC *db;
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cpb = snp->cpb;
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db = snp->db;
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snp->cdb.OpCode = PXE_OPCODE_MCAST_IP_TO_MAC;
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snp->cdb.OpFlags = (UINT16) (IPv6 ? PXE_OPFLAGS_MCAST_IPV6_TO_MAC : PXE_OPFLAGS_MCAST_IPV4_TO_MAC);
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snp->cdb.CPBsize = sizeof (PXE_CPB_MCAST_IP_TO_MAC);
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snp->cdb.DBsize = sizeof (PXE_DB_MCAST_IP_TO_MAC);
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snp->cdb.CPBaddr = (UINT64)(UINTN) cpb;
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snp->cdb.DBaddr = (UINT64)(UINTN) db;
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snp->cdb.StatCode = PXE_STATCODE_INITIALIZE;
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snp->cdb.StatFlags = PXE_STATFLAGS_INITIALIZE;
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snp->cdb.IFnum = snp->if_num;
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snp->cdb.Control = PXE_CONTROL_LAST_CDB_IN_LIST;
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CopyMem (&cpb->IP, IP, sizeof (PXE_IP_ADDR));
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//
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// Issue UNDI command and check result.
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//
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DEBUG ((EFI_D_NET, "\nsnp->undi.mcast_ip_to_mac() "));
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(*snp->issue_undi32_command) ((UINT64)(UINTN) &snp->cdb);
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switch (snp->cdb.StatCode) {
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case PXE_STATCODE_SUCCESS:
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break;
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case PXE_STATCODE_INVALID_CPB:
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return EFI_INVALID_PARAMETER;
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case PXE_STATCODE_UNSUPPORTED:
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DEBUG (
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(EFI_D_NET,
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"\nsnp->undi.mcast_ip_to_mac() %xh:%xh\n",
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snp->cdb.StatFlags,
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snp->cdb.StatCode)
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);
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return EFI_UNSUPPORTED;
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default:
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//
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// UNDI command failed. Return EFI_DEVICE_ERROR
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// to caller.
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//
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DEBUG (
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(EFI_D_NET,
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"\nsnp->undi.mcast_ip_to_mac() %xh:%xh\n",
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snp->cdb.StatFlags,
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snp->cdb.StatCode)
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);
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return EFI_DEVICE_ERROR;
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}
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CopyMem (MAC, &db->MAC, sizeof (PXE_MAC_ADDR));
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return EFI_SUCCESS;
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}
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/**
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This is the SNP interface routine for converting a multicast IP address to
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a MAC address.
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This routine basically retrieves snp structure, checks the SNP state and
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calls the pxe_ip2mac routine to actually do the conversion
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@param this context pointer
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@param IPv6 flag to indicate if this is an ipv6 address
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@param IP multicast IP address
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@param MAC pointer to hold the return MAC address
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**/
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EFI_STATUS
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EFIAPI
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snp_undi32_mcast_ip_to_mac (
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IN EFI_SIMPLE_NETWORK_PROTOCOL *this,
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IN BOOLEAN IPv6,
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IN EFI_IP_ADDRESS *IP,
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OUT EFI_MAC_ADDRESS *MAC
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)
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{
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SNP_DRIVER *snp;
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EFI_TPL OldTpl;
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EFI_STATUS Status;
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//
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// Get pointer to SNP driver instance for *this.
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//
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if (this == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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if (IP == NULL || MAC == NULL) {
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return EFI_INVALID_PARAMETER;
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}
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snp = EFI_SIMPLE_NETWORK_DEV_FROM_THIS (this);
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OldTpl = gBS->RaiseTPL (TPL_CALLBACK);
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switch (snp->mode.State) {
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case EfiSimpleNetworkInitialized:
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break;
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case EfiSimpleNetworkStopped:
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Status = EFI_NOT_STARTED;
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goto ON_EXIT;
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default:
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Status = EFI_DEVICE_ERROR;
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goto ON_EXIT;
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}
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Status = pxe_ip2mac (snp, IPv6, IP, MAC);
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ON_EXIT:
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gBS->RestoreTPL (OldTpl);
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return Status;
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}
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