diff options
Diffstat (limited to 'NetworkPkg/IScsiDxe/IScsiProto.h')
| -rw-r--r-- | NetworkPkg/IScsiDxe/IScsiProto.h | 1035 |
1 files changed, 1035 insertions, 0 deletions
diff --git a/NetworkPkg/IScsiDxe/IScsiProto.h b/NetworkPkg/IScsiDxe/IScsiProto.h new file mode 100644 index 0000000000..80c62b765c --- /dev/null +++ b/NetworkPkg/IScsiDxe/IScsiProto.h @@ -0,0 +1,1035 @@ +/** @file
+ The header file of iSCSI Protocol that defines many specific data structures.
+
+Copyright (c) 2004 - 2011, Intel Corporation. All rights reserved.<BR>
+This program and the accompanying materials
+are licensed and made available under the terms and conditions of the BSD License
+which accompanies this distribution. The full text of the license may be found at
+http://opensource.org/licenses/bsd-license.php
+
+THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
+WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
+
+**/
+
+#ifndef _ISCSI_PROTO_H_
+#define _ISCSI_PROTO_H_
+
+//
+// RFC 1982 Serial Number Arithmetic, SERIAL_BITS = 32
+//
+#define ISCSI_SEQ_EQ(s1, s2) ((s1) == (s2))
+#define ISCSI_SEQ_LT(s1, s2) \
+ ( \
+ (((INT32) (s1) < (INT32) (s2)) && (s2 - s1) < ((UINT32) 1 << 31)) || \
+ (((INT32) (s1) > (INT32) (s2)) && (s1 - s2) > ((UINT32) 1 << 31)) \
+ )
+#define ISCSI_SEQ_GT(s1, s2) \
+ ( \
+ (((INT32) (s1) < (INT32) (s2)) && (s2 - s1) > ((UINT32) 1 << 31)) || \
+ (((INT32) (s1) > (INT32) (s2)) && (s1 - s2) < ((UINT32) 1 << 31)) \
+ )
+
+#define ISCSI_WELL_KNOWN_PORT 3260
+#define ISCSI_MAX_CONNS_PER_SESSION 1
+
+#define DEFAULT_MAX_RECV_DATA_SEG_LEN 8192
+#define MAX_RECV_DATA_SEG_LEN_IN_FFP 65536
+#define DEFAULT_MAX_OUTSTANDING_R2T 1
+
+#define ISCSI_VERSION_MAX 0x00
+#define ISCSI_VERSION_MIN 0x00
+
+#define ISCSI_KEY_AUTH_METHOD "AuthMethod"
+#define ISCSI_KEY_HEADER_DIGEST "HeaderDigest"
+#define ISCSI_KEY_DATA_DIGEST "DataDigest"
+#define ISCSI_KEY_MAX_CONNECTIONS "MaxConnections"
+#define ISCSI_KEY_TARGET_NAME "TargetName"
+#define ISCSI_KEY_INITIATOR_NAME "InitiatorName"
+#define ISCSI_KEY_TARGET_ALIAS "TargetAlias"
+#define ISCSI_KEY_INITIATOR_ALIAS "InitiatorAlias"
+#define ISCSI_KEY_TARGET_ADDRESS "TargetAddress"
+#define ISCSI_KEY_INITIAL_R2T "InitialR2T"
+#define ISCSI_KEY_IMMEDIATE_DATA "ImmediateData"
+#define ISCSI_KEY_TARGET_PORTAL_GROUP_TAG "TargetPortalGroupTag"
+#define ISCSI_KEY_MAX_BURST_LENGTH "MaxBurstLength"
+#define ISCSI_KEY_FIRST_BURST_LENGTH "FirstBurstLength"
+#define ISCSI_KEY_DEFAULT_TIME2WAIT "DefaultTime2Wait"
+#define ISCSI_KEY_DEFAULT_TIME2RETAIN "DefaultTime2Retain"
+#define ISCSI_KEY_MAX_OUTSTANDING_R2T "MaxOutstandingR2T"
+#define ISCSI_KEY_DATA_PDU_IN_ORDER "DataPDUInOrder"
+#define ISCSI_KEY_DATA_SEQUENCE_IN_ORDER "DataSequenceInOrder"
+#define ISCSI_KEY_ERROR_RECOVERY_LEVEL "ErrorRecoveryLevel"
+#define ISCSI_KEY_SESSION_TYPE "SessionType"
+#define ISCSI_KEY_MAX_RECV_DATA_SEGMENT_LENGTH "MaxRecvDataSegmentLength"
+
+#define ISCSI_KEY_VALUE_NONE "None"
+
+///
+/// connection state for initiator
+///
+
+#define CONN_STATE_FREE 0
+#define CONN_STATE_XPT_WAIT 1
+#define CONN_STATE_IN_LOGIN 2
+#define CONN_STATE_LOGGED_IN 3
+#define CONN_STATE_IN_LOGOUT 4
+#define CONN_STATE_LOGOUT_REQUESTED 5
+#define CONN_STATE_CLEANUP_WAIT 6
+#define CONN_STATE_IN_CLEANUP 7
+
+///
+/// session state for initiator
+///
+#define SESSION_STATE_FREE 0
+#define SESSION_STATE_LOGGED_IN 1
+#define SESSION_STATE_FAILED 2
+
+#define ISCSI_RESERVED_TAG 0xffffffff
+
+#define ISCSI_REQ_IMMEDIATE 0x40
+#define ISCSI_OPCODE_MASK 0x3F
+
+#define ISCSI_SET_OPCODE(PduHdr, Op, Flgs) ((((ISCSI_BASIC_HEADER *) (PduHdr))->OpCode) = ((Op) | (Flgs)))
+#define ISCSI_GET_OPCODE(PduHdr) ((((ISCSI_BASIC_HEADER *) (PduHdr))->OpCode) & ISCSI_OPCODE_MASK)
+#define ISCSI_CHECK_OPCODE(PduHdr, Op) ((((PduHdr)->OpCode) & ISCSI_OPCODE_MASK) == (Op))
+#define ISCSI_IMMEDIATE_ON(PduHdr) ((PduHdr)->OpCode & ISCSI_REQ_IMMEDIATE)
+#define ISCSI_SET_FLAG(PduHdr, Flag) (((ISCSI_BASIC_HEADER *) (PduHdr))->Flags |= (BOOLEAN)(Flag))
+#define ISCSI_CLEAR_FLAG(PduHdr, Flag) (((ISCSI_BASIC_HEADER *) (PduHdr))->Flags &= ~(Flag))
+#define ISCSI_FLAG_ON(PduHdr, Flag) ((BOOLEAN) ((((ISCSI_BASIC_HEADER *) (PduHdr))->Flags & (Flag)) == (Flag)))
+#define ISCSI_SET_STAGES(PduHdr, Cur, Nxt) ((PduHdr)->Flags = (UINT8) ((PduHdr)->Flags | ((Cur) << 2 | (Nxt))))
+#define ISCSI_GET_CURRENT_STAGE(PduHdr) ((UINT8) (((PduHdr)->Flags >> 2) & 0x3))
+#define ISCSI_GET_NEXT_STAGE(PduHdr) ((UINT8) (((PduHdr)->Flags) & 0x3))
+
+#define ISCSI_GET_PAD_LEN(DataLen) ((~(DataLen) + 1) & 0x3)
+#define ISCSI_ROUNDUP(DataLen) (((DataLen) + 3) &~(0x3))
+
+#define HTON24(Dst, Src) \
+ do { \
+ (Dst)[0] = (UINT8) ((UINT8) ((Src) >> 16) & 0xFF); \
+ (Dst)[1] = (UINT8) ((UINT8) ((Src) >> 8) & 0xFF); \
+ (Dst)[2] = (UINT8) ((UINT8) (Src) & 0xFF); \
+ } while (0);
+
+#define NTOH24(src) (((src)[0] << 16) | ((src)[1] << 8) | ((src)[2]))
+
+#define ISCSI_GET_DATASEG_LEN(PduHdr) NTOH24 (((ISCSI_BASIC_HEADER *) (PduHdr))->DataSegmentLength)
+#define ISCSI_SET_DATASEG_LEN(PduHdr, Len) HTON24 (((ISCSI_BASIC_HEADER *) (PduHdr))->DataSegmentLength, (Len))
+#define ISCSI_GET_BUFFER_OFFSET(PduHdr) NTOHL (((ISCSI_SCSI_DATA_IN *) (PduHdr))->BufferOffset)
+
+//
+// Initiator opcodes.
+//
+#define ISCSI_OPCODE_NOP_OUT 0x00
+#define ISCSI_OPCODE_SCSI_CMD 0x01
+#define ISCSI_OPCODE_SCSI_TMF_REQ 0x02
+#define ISCSI_OPCODE_LOGIN_REQ 0x03
+#define ISCSI_OPCODE_TEXT_REQ 0x04
+#define ISCSI_OPCODE_SCSI_DATA_OUT 0x05
+#define ISCSI_OPCODE_LOGOUT_REQ 0x06
+#define ISCSI_OPCODE_SNACK_REQ 0x10
+#define ISCSI_OPCODE_VENDOR_I0 0x1c
+#define ISCSI_OPCODE_VENDOR_I1 0x1d
+#define ISCSI_OPCODE_VENDOR_I2 0x1e
+
+//
+// Target opcodes.
+//
+#define ISCSI_OPCODE_NOP_IN 0x20
+#define ISCSI_OPCODE_SCSI_RSP 0x21
+#define ISCSI_OPCODE_SCSI_TMF_RSP 0x22
+#define ISCSI_OPCODE_LOGIN_RSP 0x23
+#define ISCSI_OPCODE_TEXT_RSP 0x24
+#define ISCSI_OPCODE_SCSI_DATA_IN 0x25
+#define ISCSI_OPCODE_LOGOUT_RSP 0x26
+#define ISCSI_OPCODE_R2T 0x31
+#define ISCSI_OPCODE_ASYNC_MSG 0x32
+#define ISCSI_OPCODE_VENDOR_T0 0x3c
+#define ISCSI_OPCODE_VENDOR_T1 0x3d
+#define ISCSI_OPCODE_VENDOR_T2 0x3e
+#define ISCSI_OPCODE_REJECT 0x3f
+
+#define ISCSI_BHS_FLAG_FINAL 0x80
+
+//
+// Defined AHS types, others are reserved.
+//
+#define ISCSI_AHS_TYPE_EXT_CDB 0x1
+#define ISCSI_AHS_TYPE_BI_EXP_READ_DATA_LEN 0x2
+
+#define SCSI_CMD_PDU_FLAG_READ 0x40
+#define SCSI_CMD_PDU_FLAG_WRITE 0x20
+
+#define ISCSI_CMD_PDU_TASK_ATTR_MASK 0x07
+
+//
+// task attributes
+//
+#define ISCSI_TASK_ATTR_UNTAGGED 0x00
+#define ISCSI_TASK_ATTR_SIMPLE 0x01
+#define ISCSI_TASK_ATTR_ORDERD 0x02
+#define ISCSI_TASK_ATTR_HOQ 0x03
+#define ISCSI_TASK_ATTR_ACA 0x04
+
+//
+// Flag bit definitions in SCSI response.
+//
+#define SCSI_RSP_PDU_FLAG_BI_READ_OVERFLOW 0x10
+#define SCSI_RSP_PDU_FLAG_BI_READ_UNDERFLOW 0x08
+#define SCSI_RSP_PDU_FLAG_OVERFLOW 0x04
+#define SCSI_RSP_PDU_FLAG_UNDERFLOW 0x02
+
+//
+// iSCSI service response codes.
+//
+#define ISCSI_SERVICE_RSP_COMMAND_COMPLETE_AT_TARGET 0x00
+#define ISCSI_SERVICE_RSP_TARGET_FAILURE 0x01
+
+#define ISCSI_TMF_RSP_PDU_RSP_FUNCTION_COMPLETE 0
+#define ISCSI_TMF_RSP_PDU_RSP_TASK_NOT_EXIST 1
+#define ISCSI_TMF_RSP_PDU_RSP_LUN_NOT_EXIST 2
+#define ISCSI_TMF_RSP_PDU_RSP_TASK_STILL_ALLEGIANT 3
+#define ISCSI_TMF_RSP_PDU_RSP_TASK_REASSGIN_NOT_SUPPORTED 4
+#define ISCSI_TMF_RSP_PDU_RSP_NOT_SUPPORTED 5
+#define ISCSI_TMF_RSP_PDU_RSP_FUNCTION_AHTH_FAILED 6
+#define ISCSI_TMF_RSP_PDU_RSP_FUNCTION_REJECTED 255
+
+#define SCSI_DATA_IN_PDU_FLAG_ACKKNOWLEDGE 0x40
+#define SCSI_DATA_IN_PDU_FLAG_OVERFLOW SCSI_RSP_PDU_FLAG_OVERFLOW
+#define SCSI_DATA_IN_PDU_FLAG_UNDERFLOW SCSI_RSP_PDU_FLAG_UNDERFLOW
+#define SCSI_DATA_IN_PDU_FLAG_STATUS_VALID 0x01
+
+#define ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT 0x80
+#define ISCSI_LOGIN_REQ_PDU_FLAG_CONTINUE 0x40
+
+#define ISCSI_LOGIN_RSP_PDU_FLAG_TRANSIT ISCSI_LOGIN_REQ_PDU_FLAG_TRANSIT
+#define ISCSI_LOGIN_RSP_PDU_FLAG_CONTINUE ISCSI_LOGIN_REQ_PDU_FLAG_CONTINUE
+
+#define ISCSI_LOGIN_STATUS_SUCCESS 0
+#define ISCSI_LOGIN_STATUS_REDIRECTION 1
+#define ISCSI_LOGIN_STATUS_INITIATOR_ERROR 2
+#define ISCSI_LOGIN_STATUS_TARGET_ERROR 3
+
+#define ISCSI_LOGOUT_REASON_CLOSE_SESSION 0
+#define ISCSI_LOGOUT_REASON_CLOSE_CONNECTION 1
+#define ISCSI_LOGOUT_REASON_REMOVE_CONNECTION_FOR_RECOVERY 2
+
+#define ISCSI_LOGOUT_RESPONSE_SESSION_CLOSED_SUCCESS 0
+#define ISCSI_LOGOUT_RESPONSE_CID_NOT_FOUND 1
+#define ISCSI_LOGOUT_RESPONSE_RECOVERY_NOT_SUPPORTED 2
+#define ISCSI_LOGOUT_RESPONSE_CLEANUP_FAILED 3
+
+#define ISCSI_SNACK_REQUEST_TYPE_DATA_OR_R2T 0
+#define ISCSI_SNACK_REQUEST_TYPE_STATUS 1
+#define ISCSI_SNACK_REQUEST_TYPE_DATA_ACK 2
+#define ISCSI_SNACK_REQUEST_TYPE_RDATA 3
+
+#define ISCSI_SECURITY_NEGOTIATION 0
+#define ISCSI_LOGIN_OPERATIONAL_NEGOTIATION 1
+#define ISCSI_FULL_FEATURE_PHASE 3
+
+typedef struct _ISCSI_SESSION ISCSI_SESSION;
+typedef struct _ISCSI_CONNECTION ISCSI_CONNECTION;
+
+typedef enum {
+ DataIn = 0,
+ DataOut = 1,
+ DataBi = 2
+} DATA_DIRECTION;
+
+///
+/// iSCSI Basic Header Segment
+///
+typedef struct _ISCSI_BASIC_HEADER {
+ UINT8 OpCode;
+ UINT8 Flags;
+ UINT16 OpCodeSpecific1;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Lun[8];
+ UINT32 InitiatorTaskTag;
+ UINT32 OpCodeSpecific2[7];
+} ISCSI_BASIC_HEADER;
+
+typedef struct _ISCSI_ADDTIONAL_HEADER {
+ UINT16 Length;
+ UINT8 Type;
+ UINT8 TypeSpecific[1];
+} ISCSI_ADDITIONAL_HEADER;
+
+typedef struct _ISCSI_BI_EXP_READ_DATA_LEN_AHS {
+ UINT16 Length;
+ UINT8 Type;
+ UINT8 Reserved;
+ UINT32 ExpReadDataLength;
+} ISCSI_BI_EXP_READ_DATA_LEN_AHS;
+
+///
+/// SCSI Command
+///
+typedef struct _SCSI_COMMAND {
+ UINT8 OpCode;
+ UINT8 Flags;
+ UINT16 Reserved;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Lun[8];
+ UINT32 InitiatorTaskTag;
+ UINT32 ExpDataXferLength;
+ UINT32 CmdSN;
+ UINT32 ExpStatSN;
+ UINT8 Cdb[16];
+} SCSI_COMMAND;
+
+///
+/// SCSI Response
+///
+typedef struct _SCSI_RESPONSE {
+ UINT8 OpCode;
+ UINT8 Flags;
+ UINT8 Response;
+ UINT8 Status;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Reserved[8];
+ UINT32 InitiatorTaskTag;
+ UINT32 SNACKTag;
+ UINT32 StatSN;
+ UINT32 ExpCmdSN;
+ UINT32 MaxCmdSN;
+ UINT32 ExpDataSN;
+ UINT32 BiReadResidualCount;
+ UINT32 ResidualCount;
+} SCSI_RESPONSE;
+
+typedef struct _ISCSI_SENSE_DATA {
+ UINT16 Length;
+ UINT8 Data[2];
+} ISCSI_SENSE_DATA;
+
+///
+/// iSCSI Task Managment Function Request.
+///
+typedef struct _ISCSI_TMF_REQUEST {
+ UINT8 OpCode;
+ UINT8 Fuction;
+ UINT16 Reserved1;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Lun[8];
+ UINT32 InitiatorTaskTag;
+ UINT32 ReferencedTaskTag;
+ UINT32 CmdSN;
+ UINT32 ExpStatSN;
+ UINT32 RefCmdSN;
+ UINT32 ExpDataSN;
+ UINT32 Reserved2[2];
+} ISCSI_TMF_REQUEST;
+
+///
+/// iSCSI Task Management Function Response.
+///
+typedef struct _ISCSI_TMF_RESPONSE {
+ UINT8 OpCode;
+ UINT8 Reserved1;
+ UINT8 Response;
+ UINT8 Reserved2;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT32 Reserver3[2];
+ UINT32 InitiatorTaskTag;
+ UINT32 Reserved4;
+ UINT32 StatSN;
+ UINT32 ExpCmdSN;
+ UINT32 MaxCmdSN;
+ UINT32 Reserved[3];
+} ISCSI_TMF_RESPONSE;
+
+///
+/// SCSI Data-Out
+///
+typedef struct _ISCSI_SCSI_DATA_OUT {
+ UINT8 OpCode;
+ UINT8 Reserved1[3];
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Lun[8];
+ UINT32 InitiatorTaskTag;
+ UINT32 TargetTransferTag;
+ UINT32 Reserved2;
+ UINT32 ExpStatSN;
+ UINT32 Reserved3;
+ UINT32 DataSN;
+ UINT32 BufferOffset;
+ UINT32 Reserved4;
+} ISCSI_SCSI_DATA_OUT;
+
+///
+/// SCSI Data-In
+///
+typedef struct _ISCSI_SCSI_DATA_IN {
+ UINT8 OpCode;
+ UINT8 Flags;
+ UINT8 Reserved1;
+ UINT8 Status;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Lun[8];
+ UINT32 InitiatorTaskTag;
+ UINT32 TargetTransferTag;
+ UINT32 StatSN;
+ UINT32 ExpCmdSN;
+ UINT32 MaxCmdSN;
+ UINT32 DataSN;
+ UINT32 BufferOffset;
+ UINT32 ResidualCount;
+} ISCSI_SCSI_DATA_IN;
+
+///
+/// Ready To Transfer.
+///
+typedef struct _ISCSI_READY_TO_TRANSFER {
+ UINT8 OpCode;
+ UINT8 Reserved1[3];
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Lun[8];
+ UINT32 InitiatorTaskTag;
+ UINT32 TargetTransferTag;
+ UINT32 StatSN;
+ UINT32 ExpCmdSN;
+ UINT32 MaxCmdSN;
+ UINT32 R2TSeqNum;
+ UINT32 BufferOffset;
+ UINT32 DesiredDataTransferLength;
+} ISCSI_READY_TO_TRANSFER;
+
+typedef struct _ISCSI_ASYNC_MESSAGE {
+ UINT8 OpCode;
+ UINT8 Reserved1[8];
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Lun[8];
+ UINT32 InitiatorTaskTag;
+ UINT32 Reserved2;
+ UINT32 StatSN;
+ UINT32 ExpCmdSN;
+ UINT32 MaxCmdSN;
+ UINT8 AsyncEvent;
+ UINT8 AsyncVCode;
+ UINT16 Parameter1;
+ UINT16 Parameter2;
+ UINT16 Parameter3;
+ UINT32 Reserved3;
+} ISCSI_ASYNC_MESSAGE;
+
+///
+/// Login Request.
+///
+typedef struct _ISCSI_LOGIN_REQUEST {
+ UINT8 OpCode;
+ UINT8 Flags;
+ UINT8 VersionMax;
+ UINT8 VersionMin;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Isid[6];
+ UINT16 Tsih;
+ UINT32 InitiatorTaskTag;
+ UINT16 Cid;
+ UINT16 Reserved1;
+ UINT32 CmdSN;
+ UINT32 ExpStatSN;
+ UINT32 Reserved2[4];
+} ISCSI_LOGIN_REQUEST;
+
+///
+/// Login Response.
+///
+typedef struct _ISCSI_LOGIN_RESPONSE {
+ UINT8 OpCode;
+ UINT8 Flags;
+ UINT8 VersionMax;
+ UINT8 VersionActive;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Isid[6];
+ UINT16 Tsih;
+ UINT32 InitiatorTaskTag;
+ UINT32 Reserved1;
+ UINT32 StatSN;
+ UINT32 ExpCmdSN;
+ UINT32 MaxCmdSN;
+ UINT8 StatusClass;
+ UINT8 StatusDetail;
+ UINT8 Reserved2[10];
+} ISCSI_LOGIN_RESPONSE;
+
+///
+/// Logout Request.
+///
+typedef struct _ISCSI_LOGOUT_REQUEST {
+ UINT8 OpCode;
+ UINT8 ReasonCode;
+ UINT16 Reserved1;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT32 Reserved2[2];
+ UINT32 InitiatorTaskTag;
+ UINT16 Cid;
+ UINT16 Reserved3;
+ UINT32 CmdSN;
+ UINT32 ExpStatSN;
+ UINT32 Reserved4[4];
+} ISCSI_LOGOUT_REQUEST;
+
+///
+/// Logout Response.
+///
+typedef struct _ISCSI_LOGOUT_RESPONSE {
+ UINT8 OpCode;
+ UINT8 Reserved1;
+ UINT8 Response;
+ UINT8 Reserved2;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT32 Reserved3[2];
+ UINT32 InitiatorTaskTag;
+ UINT32 Reserved4;
+ UINT32 StatSN;
+ UINT32 ExpCmdSN;
+ UINT32 MaxCmdSN;
+ UINT32 Reserved5;
+ UINT16 Time2Wait;
+ UINT16 Time2Retain;
+ UINT32 Reserved6;
+} ISCSI_LOGOUT_RESPONSE;
+
+///
+/// SNACK Request.
+///
+typedef struct _ISCSI_SNACK_REQUEST {
+ UINT8 OpCode;
+ UINT8 Type;
+ UINT16 Reserved1;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Lun[8];
+ UINT32 InitiatorTaskTag;
+ UINT32 TargetTransferTag;
+ UINT32 Reserved2;
+ UINT32 ExpStatSN;
+ UINT32 Reserved[2];
+ UINT32 BegRun;
+ UINT32 RunLength;
+} ISCSI_SNACK_REQUEST;
+
+///
+/// Reject.
+///
+typedef struct _ISCSI_REJECT {
+ UINT8 OpCode;
+ UINT8 Reserved1;
+ UINT8 Reason;
+ UINT8 Reserved2;
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT32 Reserved3[2];
+ UINT32 InitiatorTaskTag;
+ UINT32 Reserved4;
+ UINT32 StatSN;
+ UINT32 ExpCmdSN;
+ UINT32 MaxCmdSN;
+ UINT32 DataSN;
+ UINT32 Reserved5[2];
+} ISCSI_REJECT;
+
+///
+/// NOP-Out.
+///
+typedef struct _ISCSI_NOP_OUT {
+ UINT8 OpCode;
+ UINT8 Reserved1[3];
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Lun[8];
+ UINT32 InitiatorTaskTag;
+ UINT32 TargetTransferTag;
+ UINT32 CmdSN;
+ UINT32 ExpStatSN;
+ UINT32 Reserved2[4];
+} ISCSI_NOP_OUT;
+
+///
+/// NOP-In.
+///
+typedef struct _ISCSI_NOP_IN {
+ UINT8 OpCode;
+ UINT8 Reserved1[3];
+ UINT8 TotalAHSLength;
+ UINT8 DataSegmentLength[3];
+ UINT8 Lun[8];
+ UINT32 InitiatorTaskTag;
+ UINT32 TargetTransferTag;
+ UINT32 StatSN;
+ UINT32 ExpCmdSN;
+ UINT32 MaxCmdSN;
+ UINT32 Reserved2[3];
+} ISCSI_NOP_IN;
+
+typedef enum {
+ IScsiDigestNone,
+ IScsiDigestCRC32
+} ISCSI_DIGEST_TYPE;
+
+typedef struct _ISCSI_XFER_CONTEXT {
+ UINT32 TargetTransferTag;
+ UINT32 Offset;
+ UINT32 DesiredLength;
+ UINT32 ExpDataSN;
+} ISCSI_XFER_CONTEXT;
+
+typedef struct _ISCSI_IN_BUFFER_CONTEXT {
+ UINT8 *InData;
+ UINT32 InDataLen;
+} ISCSI_IN_BUFFER_CONTEXT;
+
+typedef struct _ISCSI_TCB {
+ LIST_ENTRY Link;
+
+ BOOLEAN SoFarInOrder;
+ UINT32 ExpDataSN;
+ BOOLEAN FbitReceived;
+ BOOLEAN StatusXferd;
+ UINT32 ActiveR2Ts;
+ UINT32 Response;
+ CHAR8 *Reason;
+ UINT32 InitiatorTaskTag;
+ UINT32 CmdSN;
+ UINT32 SNACKTag;
+
+ ISCSI_XFER_CONTEXT XferContext;
+
+ ISCSI_CONNECTION *Conn;
+} ISCSI_TCB;
+
+typedef struct _ISCSI_KEY_VALUE_PAIR {
+ LIST_ENTRY List;
+
+ CHAR8 *Key;
+ CHAR8 *Value;
+} ISCSI_KEY_VALUE_PAIR;
+
+/**
+ Attach the iSCSI connection to the iSCSI session.
+
+ @param[in, out] Session The iSCSI session.
+ @param[in, out] Conn The iSCSI connection.
+
+**/
+VOID
+IScsiAttatchConnection (
+ IN OUT ISCSI_SESSION *Session,
+ IN OUT ISCSI_CONNECTION *Conn
+ );
+
+/**
+ Detach the iSCSI connection from the session it belongs to.
+
+ @param[in, out] Conn The iSCSI connection.
+
+**/
+VOID
+IScsiDetatchConnection (
+ IN OUT ISCSI_CONNECTION *Conn
+ );
+
+/**
+ This function performs the iSCSI connection login.
+
+ @param[in, out] Conn The iSCSI connection to login.
+ @param Timeout The timeout value in milliseconds.
+
+ @retval EFI_SUCCESS The iSCSI connection is logged into the iSCSI target.
+ @retval EFI_TIMEOUT Timeout occurred during the login procedure.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+IScsiConnLogin (
+ IN OUT ISCSI_CONNECTION *Conn,
+ IN UINT16 Timeout
+ );
+
+/**
+ Create a TCP connection for the iSCSI session.
+
+ @param[in] Session Points to the iSCSI session.
+
+ @return The newly created iSCSI connection.
+
+**/
+ISCSI_CONNECTION *
+IScsiCreateConnection (
+ IN ISCSI_SESSION *Session
+ );
+
+/**
+ Destroy an iSCSI connection.
+
+ @param[in] Conn The connection to destroy.
+
+**/
+VOID
+IScsiDestroyConnection (
+ IN ISCSI_CONNECTION *Conn
+ );
+
+/**
+ Login the iSCSI session.
+
+ @param[in] Session The iSCSI session
+
+ @retval EFI_SUCCESS The iSCSI session login procedure finished.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+ @retval EFI_NO_MEDIA There was a media error.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+IScsiSessionLogin (
+ IN ISCSI_SESSION *Session
+ );
+
+/**
+ Wait for IPsec negotiation, then try to login the iSCSI session again.
+
+ @param[in] Session The iSCSI session
+
+ @retval EFI_SUCCESS The iSCSI session login procedure finished.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+ @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.
+
+**/
+EFI_STATUS
+IScsiSessionReLogin (
+ IN ISCSI_SESSION *Session
+ );
+
+/**
+ Build and send the iSCSI login request to the iSCSI target according to
+ the current login stage.
+
+ @param[in] Conn The connection in the iSCSI login phase.
+
+ @retval EFI_SUCCESS The iSCSI login request PDU is built and sent on this
+ connection.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+ @retval EFI_DEVICE_ERROR Some kind of device error happened.
+
+**/
+EFI_STATUS
+IScsiSendLoginReq (
+ IN ISCSI_CONNECTION *Conn
+ );
+
+/**
+ Receive and process the iSCSI login response.
+
+ @param[in] Conn The connection in the iSCSI login phase.
+
+ @retval EFI_SUCCESS The iSCSI login response PDU is received and processed.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+IScsiReceiveLoginRsp (
+ IN ISCSI_CONNECTION *Conn
+ );
+
+/**
+ Add an iSCSI key-value pair as a string into the data segment of the Login Request PDU.
+ The DataSegmentLength and the actual size of the net buffer containing this PDU will be
+ updated.
+
+ @param[in, out] Pdu The iSCSI PDU whose data segment the key-value pair will
+ be added to.
+ @param[in] Key The key name string.
+ @param[in] Value The value string.
+
+ @retval EFI_SUCCESS The key-valu pair is added to the PDU's datasegment and
+ the correspondence length fields are updated.
+ @retval EFI_OUT_OF_RESOURCES There is not enough space in the PDU to add the key-value
+ pair.
+**/
+EFI_STATUS
+IScsiAddKeyValuePair (
+ IN OUT NET_BUF *Pdu,
+ IN CHAR8 *Key,
+ IN CHAR8 *Value
+ );
+
+/**
+ Prepare the iSCSI login request to be sent according to the current login status.
+
+ @param[in, out] Conn The connection in the iSCSI login phase.
+
+ @return The pointer to the net buffer containing the iSCSI login request built.
+ @retval NULL Other errors as indicated.
+
+**/
+NET_BUF *
+IScsiPrepareLoginReq (
+ IN OUT ISCSI_CONNECTION *Conn
+ );
+
+/**
+ Process the iSCSI Login Response.
+
+ @param[in, out] Conn The connection on which the iSCSI login response is received.
+ @param[in, out] Pdu The iSCSI login response PDU.
+
+ @retval EFI_SUCCESS The iSCSI login response PDU is processed and all check are passed.
+ @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.
+ @retval EFI_MEDIA_CHANGED Target is redirected.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+IScsiProcessLoginRsp (
+ IN OUT ISCSI_CONNECTION *Conn,
+ IN OUT NET_BUF *Pdu
+ );
+
+/**
+ Updated the target information according the data received in the iSCSI
+ login response with an target redirection status.
+
+ @param[in, out] Session The iSCSI session.
+ @param[in] Data The data segment which should contain the
+ TargetAddress key-value list.
+ @param[in] Len Length of the data.
+
+ @retval EFI_SUCCESS The target address is updated.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+ @retval EFI_NOT_FOUND The TargetAddress key is not found.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+IScsiUpdateTargetAddress (
+ IN OUT ISCSI_SESSION *Session,
+ IN CHAR8 *Data,
+ IN UINT32 Len
+ );
+
+/**
+ The callback function to free the net buffer list.
+
+ @param[in] Arg The opaque parameter.
+
+**/
+VOID
+EFIAPI
+IScsiFreeNbufList (
+ VOID *Arg
+ );
+
+/**
+ Receive an iSCSI response PDU. An iSCSI response PDU contains an iSCSI PDU header and
+ an optional data segment. The two parts will be put into two blocks of buffers in the
+ net buffer. The digest check will be conducted in this function if needed and the digests
+ will be trimmed from the PDU buffer.
+
+ @param[in] Conn The iSCSI connection to receive data from.
+ @param[out] Pdu The received iSCSI pdu.
+ @param[in] Context The context used to describe information on the caller provided
+ buffer to receive data segment of the iSCSI pdu, it's optional.
+ @param[in] HeaderDigest Whether there will be header digest received.
+ @param[in] DataDigest Whether there will be data digest.
+ @param[in] TimeoutEvent The timeout event, it's optional.
+
+ @retval EFI_SUCCESS An iSCSI pdu is received.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+ @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error occurred.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+IScsiReceivePdu (
+ IN ISCSI_CONNECTION *Conn,
+ OUT NET_BUF **Pdu,
+ IN ISCSI_IN_BUFFER_CONTEXT *Context, OPTIONAL
+ IN BOOLEAN HeaderDigest,
+ IN BOOLEAN DataDigest,
+ IN EFI_EVENT TimeoutEvent OPTIONAL
+ );
+
+/**
+ Check and get the result of the prameter negotiation.
+
+ @param[in, out] Conn The connection in iSCSI login.
+
+ @retval EFI_SUCCESS The parmeter check is passed and negotiation is finished.
+ @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error occurred.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+
+**/
+EFI_STATUS
+IScsiCheckOpParams (
+ IN OUT ISCSI_CONNECTION *Conn
+ );
+
+/**
+ Fill the oprational prameters.
+
+ @param[in] Conn The connection in iSCSI login.
+ @param[in, out] Pdu The iSCSI login request PDU to fill the parameters.
+
+**/
+VOID
+IScsiFillOpParams (
+ IN ISCSI_CONNECTION *Conn,
+ IN OUT NET_BUF *Pdu
+ );
+
+/**
+ Pad the iSCSI AHS or data segment to an integer number of 4 byte words.
+
+ @param[in, out] Pdu The iSCSI pdu which contains segments to pad.
+ @param[in] Len The length of the last semgnet in the PDU.
+
+ @retval EFI_SUCCESS The segment is padded or no need to pad it.
+ @retval EFI_OUT_OF_RESOURCES There is not enough remaining free space to add the
+ padding bytes.
+**/
+EFI_STATUS
+IScsiPadSegment (
+ IN OUT NET_BUF *Pdu,
+ IN UINT32 Len
+ );
+
+/**
+ Build a key-value list from the data segment.
+
+ @param[in] Data The data segment containing the key-value pairs.
+ @param[in] Len Length of the data segment.
+
+ @return The key-value list.
+ @retval NULL Other errors as indicated.
+
+**/
+LIST_ENTRY *
+IScsiBuildKeyValueList (
+ IN CHAR8 *Data,
+ IN UINT32 Len
+ );
+
+/**
+ Get the value string by the key name from the key-value list. If found,
+ the key-value entry will be removed from the list.
+
+ @param[in, out] KeyValueList The key-value list.
+ @param[in] Key The key name to find.
+
+ @return The value string.
+ @retval NULL The key value pair can not be found.
+
+**/
+CHAR8 *
+IScsiGetValueByKeyFromList (
+ IN OUT LIST_ENTRY *KeyValueList,
+ IN CHAR8 *Key
+ );
+
+/**
+ Free the key-value list.
+
+ @param[in] KeyValueList The key-value list.
+
+**/
+VOID
+IScsiFreeKeyValueList (
+ IN LIST_ENTRY *KeyValueList
+ );
+
+/**
+ Normalize the iSCSI name according to RFC.
+
+ @param[in, out] Name The iSCSI name.
+ @param[in] Len length of the iSCSI name.
+
+ @retval EFI_SUCCESS The iSCSI name is valid and normalized.
+ @retval EFI_PROTOCOL_ERROR The iSCSI name is mal-formatted or not in the IQN format.
+
+**/
+EFI_STATUS
+IScsiNormalizeName (
+ IN OUT CHAR8 *Name,
+ IN UINTN Len
+ );
+
+/**
+ Execute the SCSI command issued through the EXT SCSI PASS THRU protocol.
+
+ @param[in] PassThru The EXT SCSI PASS THRU protocol.
+ @param[in] Target The target ID.
+ @param[in] Lun The LUN.
+ @param[in, out] Packet The request packet containing IO request, SCSI command
+ buffer and buffers to read/write.
+
+ @retval EFI_SUCCES The SCSI command is executed and the result is updated to
+ the Packet.
+ @retval EFI_DEVICE_ERROR Session state was not as required.
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.
+ @retval Others Other errors as indicated.
+
+**/
+EFI_STATUS
+IScsiExecuteScsiCommand (
+ IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *PassThru,
+ IN UINT8 *Target,
+ IN UINT64 Lun,
+ IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet
+ );
+
+/**
+ Reinstate the session on some error.
+
+ @param[in] Session The iSCSI session
+
+ @retval EFI_SUCCES The session is reinstated from some error.
+ @retval Other Reinstatement failed.
+
+**/
+EFI_STATUS
+IScsiSessionReinstatement (
+ IN ISCSI_SESSION *Session
+ );
+
+/**
+ Initialize some session parameters before login.
+
+ @param[in, out] Session The iSCSI session.
+ @param[in] Recovery Whether the request is from a fresh new start or recovery.
+
+**/
+VOID
+IScsiSessionInit (
+ IN OUT ISCSI_SESSION *Session,
+ IN BOOLEAN Recovery
+ );
+
+/**
+ Abort the iSCSI session, that is, reset all the connection and free the
+ resources.
+
+ @param[in, out] Session The iSCSI session.
+
+**/
+VOID
+IScsiSessionAbort (
+ IN OUT ISCSI_SESSION *Session
+ );
+
+#endif
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