/** @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; | |
} |