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/** @file
RedfishSmbiosHostInterface.c
Discover Redfish SMBIOS Host Interface.
(C) Copyright 2021 Hewlett Packard Enterprise Development LP<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "RedfishDiscoverInternal.h"
SMBIOS_TABLE_TYPE42 *mType42Record;
/**
The function gets information reported in Redfish Host Interface.
It simply frees the packet.
@param[in] Smbios SMBIOS protocol.
@param[out] DeviceDescriptor Pointer to REDFISH_INTERFACE_DATA.
@param[out] ProtocolData Pointer to REDFISH_OVER_IP_PROTOCOL_DATA.
@retval EFI_SUCCESS Get host interface succesfully.
@retval Otherwise Fail to tet host interface.
**/
EFI_STATUS
RedfishGetHostInterfaceProtocolData (
IN EFI_SMBIOS_PROTOCOL *Smbios,
OUT REDFISH_INTERFACE_DATA **DeviceDescriptor,
OUT REDFISH_OVER_IP_PROTOCOL_DATA **ProtocolData
)
{
EFI_STATUS Status;
EFI_SMBIOS_HANDLE SmbiosHandle;
EFI_SMBIOS_TABLE_HEADER *Record;
UINT16 Offset;
UINT8 *RecordTmp;
UINT8 ProtocolLength;
UINT8 SpecificDataLen;
if ((Smbios == NULL) || (ProtocolData == NULL)) {
return EFI_INVALID_PARAMETER;
}
SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
Status = Smbios->GetNext (Smbios, &SmbiosHandle, NULL, &Record, NULL);
while (!EFI_ERROR (Status) && SmbiosHandle != SMBIOS_HANDLE_PI_RESERVED) {
if (Record->Type == SMBIOS_TYPE_MANAGEMENT_CONTROLLER_HOST_INTERFACE) {
//
// Check Interface Type, should be Network Host Interface = 40h
//
mType42Record = (SMBIOS_TABLE_TYPE42 *) Record;
if (mType42Record->InterfaceType == MCHostInterfaceTypeNetworkHostInterface) {
ASSERT (Record->Length >= 9);
Offset = 5;
RecordTmp = (UINT8 *) Record + Offset;
//
// Get interface specific data length.
//
SpecificDataLen = *RecordTmp;
Offset += 1;
RecordTmp = (UINT8 *) Record + Offset;
//
// Check Device Type, only PCI/PCIe Network Interface v2 is supported now.
//
if (*RecordTmp == REDFISH_HOST_INTERFACE_DEVICE_TYPE_PCI_PCIE_V2) {
ASSERT (SpecificDataLen == sizeof (PCI_OR_PCIE_INTERFACE_DEVICE_DESCRIPTOR_V2) + 1);
*DeviceDescriptor = (REDFISH_INTERFACE_DATA *)RecordTmp;
Offset = Offset + SpecificDataLen;
RecordTmp = (UINT8 *) Record + Offset;
//
// Check Protocol count. if > 1, only use the first protocol.
//
ASSERT (*RecordTmp == 1);
Offset += 1;
RecordTmp = (UINT8 *) Record + Offset;
//
// Check protocol identifier.
//
if (*RecordTmp == MCHostInterfaceProtocolTypeRedfishOverIP) {
Offset += 1;
RecordTmp = (UINT8 *) Record + Offset;
ProtocolLength = *RecordTmp;
Offset += 1;
RecordTmp = (UINT8 *) Record + Offset;
//
// This SMBIOS record is invalid, if the length of protocol specific data for
// Redfish Over IP protocol is wrong.
//
if ((*(RecordTmp + 90) + sizeof (REDFISH_OVER_IP_PROTOCOL_DATA) - 1) != ProtocolLength) {
return EFI_SECURITY_VIOLATION;
}
Offset += ProtocolLength;
//
// This SMBIOS record is invalid, if the length is smaller than the offset.
//
if (Offset > mType42Record->Hdr.Length) {
return EFI_SECURITY_VIOLATION;
}
*ProtocolData = (REDFISH_OVER_IP_PROTOCOL_DATA *)RecordTmp;
return EFI_SUCCESS;
}
}
}
}
Status = Smbios->GetNext (Smbios, &SmbiosHandle, NULL, &Record, NULL);
}
*ProtocolData = NULL;
return EFI_NOT_FOUND;
}
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