| 1 | /** @file
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| 2 | RedfishSmbiosHostInterface.c
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| 3 |
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| 4 | Discover Redfish SMBIOS Host Interface.
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| 5 |
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| 6 | (C) Copyright 2021 Hewlett Packard Enterprise Development LP<BR>
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| 7 | Copyright (c) 2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
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| 8 |
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| 9 | SPDX-License-Identifier: BSD-2-Clause-Patent
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| 10 |
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| 11 | **/
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| 12 |
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| 13 | #include "RedfishDiscoverInternal.h"
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| 14 |
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| 15 | SMBIOS_TABLE_TYPE42 *mType42Record;
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| 16 |
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| 17 | /**
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| 18 | The function gets information reported in Redfish Host Interface.
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| 19 |
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| 20 | It simply frees the packet.
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| 21 |
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| 22 | @param[in] Smbios SMBIOS protocol.
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| 23 | @param[out] DeviceDescriptor Pointer to REDFISH_INTERFACE_DATA.
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| 24 | @param[out] ProtocolData Pointer to REDFISH_OVER_IP_PROTOCOL_DATA.
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| 25 |
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| 26 | @retval EFI_SUCCESS Get host interface successfully.
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| 27 | @retval Otherwise Fail to tet host interface.
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| 28 |
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| 29 | **/
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| 30 | EFI_STATUS
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| 31 | RedfishGetHostInterfaceProtocolData (
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| 32 | IN EFI_SMBIOS_PROTOCOL *Smbios,
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| 33 | OUT REDFISH_INTERFACE_DATA **DeviceDescriptor,
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| 34 | OUT REDFISH_OVER_IP_PROTOCOL_DATA **ProtocolData
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| 35 | )
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| 36 | {
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| 37 | EFI_STATUS Status;
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| 38 | EFI_SMBIOS_HANDLE SmbiosHandle;
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| 39 | EFI_SMBIOS_TABLE_HEADER *Record;
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| 40 | UINT16 Offset;
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| 41 | UINT8 *RecordTmp;
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| 42 | UINT8 ProtocolLength;
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| 43 | UINT8 SpecificDataLen;
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| 44 |
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| 45 | if ((Smbios == NULL) || (ProtocolData == NULL)) {
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| 46 | return EFI_INVALID_PARAMETER;
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| 47 | }
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| 48 |
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| 49 | SmbiosHandle = SMBIOS_HANDLE_PI_RESERVED;
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| 50 | Status = Smbios->GetNext (Smbios, &SmbiosHandle, NULL, &Record, NULL);
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| 51 | while (!EFI_ERROR (Status) && SmbiosHandle != SMBIOS_HANDLE_PI_RESERVED) {
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| 52 | if (Record->Type == SMBIOS_TYPE_MANAGEMENT_CONTROLLER_HOST_INTERFACE) {
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| 53 | //
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| 54 | // Check Interface Type, should be Network Host Interface = 40h
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| 55 | //
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| 56 | mType42Record = (SMBIOS_TABLE_TYPE42 *)Record;
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| 57 | if (mType42Record->InterfaceType == MCHostInterfaceTypeNetworkHostInterface) {
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| 58 | ASSERT (Record->Length >= 9);
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| 59 | Offset = 5;
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| 60 | RecordTmp = (UINT8 *)Record + Offset;
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| 61 | //
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| 62 | // Get interface specific data length.
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| 63 | //
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| 64 | SpecificDataLen = *RecordTmp;
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| 65 | Offset += 1;
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| 66 | RecordTmp = (UINT8 *)Record + Offset;
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| 67 |
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| 68 | //
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| 69 | // Check Device Type, PCI/PCIe and USB Network Interface v2 is supported.
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| 70 | //
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| 71 | if ((*RecordTmp == REDFISH_HOST_INTERFACE_DEVICE_TYPE_PCI_PCIE_V2) || (*RecordTmp == REDFISH_HOST_INTERFACE_DEVICE_TYPE_USB_V2)) {
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| 72 | if (*RecordTmp == REDFISH_HOST_INTERFACE_DEVICE_TYPE_PCI_PCIE_V2) {
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| 73 | if (SpecificDataLen != sizeof (PCI_OR_PCIE_INTERFACE_DEVICE_DESCRIPTOR_V2) + 1) {
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| 74 | ASSERT (SpecificDataLen == sizeof (PCI_OR_PCIE_INTERFACE_DEVICE_DESCRIPTOR_V2) + 1);
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| 75 | return EFI_VOLUME_CORRUPTED;
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| 76 | }
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| 77 | } else {
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| 78 | if (SpecificDataLen != sizeof (USB_INTERFACE_DEVICE_DESCRIPTOR_V2) + 1) {
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| 79 | ASSERT (SpecificDataLen == sizeof (USB_INTERFACE_DEVICE_DESCRIPTOR_V2) + 1);
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| 80 | return EFI_VOLUME_CORRUPTED;
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| 81 | }
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| 82 | }
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| 83 |
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| 84 | *DeviceDescriptor = (REDFISH_INTERFACE_DATA *)RecordTmp;
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| 85 | Offset = Offset + SpecificDataLen;
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| 86 | RecordTmp = (UINT8 *)Record + Offset;
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| 87 | //
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| 88 | // Check Protocol count. if > 1, only use the first protocol.
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| 89 | //
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| 90 | ASSERT (*RecordTmp == 1);
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| 91 | Offset += 1;
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| 92 | RecordTmp = (UINT8 *)Record + Offset;
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| 93 | //
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| 94 | // Check protocol identifier.
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| 95 | //
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| 96 | if (*RecordTmp == MCHostInterfaceProtocolTypeRedfishOverIP) {
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| 97 | Offset += 1;
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| 98 | RecordTmp = (UINT8 *)Record + Offset;
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| 99 | ProtocolLength = *RecordTmp;
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| 100 |
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| 101 | Offset += 1;
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| 102 | RecordTmp = (UINT8 *)Record + Offset;
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| 103 |
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| 104 | //
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| 105 | // This SMBIOS record is invalid, if the length of protocol specific data for
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| 106 | // Redfish Over IP protocol is wrong.
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| 107 | //
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| 108 | if ((*(RecordTmp + 90) + sizeof (REDFISH_OVER_IP_PROTOCOL_DATA) - 1) != ProtocolLength) {
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| 109 | return EFI_SECURITY_VIOLATION;
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| 110 | }
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| 111 |
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| 112 | Offset += ProtocolLength;
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| 113 | //
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| 114 | // This SMBIOS record is invalid, if the length is smaller than the offset.
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| 115 | //
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| 116 | if (Offset > mType42Record->Hdr.Length) {
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| 117 | return EFI_SECURITY_VIOLATION;
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| 118 | }
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| 119 |
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| 120 | *ProtocolData = (REDFISH_OVER_IP_PROTOCOL_DATA *)RecordTmp;
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| 121 | return EFI_SUCCESS;
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| 122 | }
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| 123 | }
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| 124 | }
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| 125 | }
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| 126 |
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| 127 | Status = Smbios->GetNext (Smbios, &SmbiosHandle, NULL, &Record, NULL);
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| 128 | }
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| 129 |
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| 130 | *ProtocolData = NULL;
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| 131 | return EFI_NOT_FOUND;
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| 132 | }
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