-/*++\r
+/** @file\r
+ The header file of IScsi Protocol that defines many specific data structures.\r
\r
-Copyright (c) 2004 - 2007, Intel Corporation\r
+Copyright (c) 2004 - 2008, Intel Corporation\r
All rights reserved. This program and the accompanying materials\r
are licensed and made available under the terms and conditions of the BSD License\r
which accompanies this distribution. The full text of the license may be found at\r
\r
Abstract:\r
\r
- Protocol definitions for iSCSI driver, mainly from RFC3720.\r
+ Protocol definitions for IScsi driver, mainly from RFC3720.\r
\r
---*/\r
+**/\r
\r
#ifndef _ISCSI_PROTO_H_\r
#define _ISCSI_PROTO_H_\r
\r
-#include <protocol/ScsiPassThruExt.h>\r
+#include <Protocol/ScsiPassThruExt.h>\r
\r
//\r
// RFC 1982 Serial Number Arithmetic, SERIAL_BITS = 32\r
#define ISCSI_SEQ_EQ(s1, s2) ((s1) == (s2))\r
#define ISCSI_SEQ_LT(s1, s2) \\r
( \\r
- (((INT32) (s1) < (INT32) (s2)) && (s2 - s1) < (1 << 31)) || \\r
- (((INT32) (s1) > (INT32) (s2)) && (s1 - s2) > (1 << 31)) \\r
+ (((INT32) (s1) < (INT32) (s2)) && (s2 - s1) < ((UINT32) 1 << 31)) || \\r
+ (((INT32) (s1) > (INT32) (s2)) && (s1 - s2) > ((UINT32) 1 << 31)) \\r
)\r
#define ISCSI_SEQ_GT(s1, s2) \\r
( \\r
- (((INT32) (s1) < (INT32) (s2)) && (s2 - s1) > (1 << 31)) || \\r
- (((INT32) (s1) > (INT32) (s2)) && (s1 - s2) < (1 << 31)) \\r
+ (((INT32) (s1) < (INT32) (s2)) && (s2 - s1) > ((UINT32) 1 << 31)) || \\r
+ (((INT32) (s1) > (INT32) (s2)) && (s1 - s2) < ((UINT32) 1 << 31)) \\r
)\r
\r
#define ISCSI_WELL_KNOWN_PORT 3260\r
//\r
// function prototypes.\r
//\r
+/**\r
+ Attach the iSCSI connection to the iSCSI session. \r
+\r
+ @param Session[in] The iSCSI session.\r
+\r
+ @param Conn[in] The iSCSI connection.\r
+\r
+ @retval None.\r
+\r
+**/\r
VOID\r
IScsiAttatchConnection (\r
IN ISCSI_SESSION *Session,\r
IN ISCSI_CONNECTION *Conn\r
);\r
\r
+/**\r
+ Detach the iSCSI connection from the session it belongs to. \r
+\r
+ @param Conn[in] The iSCSI connection.\r
+\r
+ @retval None.\r
+\r
+**/\r
VOID\r
IScsiDetatchConnection (\r
IN ISCSI_CONNECTION *Conn\r
);\r
\r
+/**\r
+ This function does the iSCSI connection login.\r
+\r
+ @param Conn[in] The iSCSI connection to login.\r
+\r
+ @retval EFI_SUCCESS The iSCSI connection is logged into the iSCSI target.\r
+\r
+ @retval EFI_TIMEOUT Timeout happened during the login procedure.\r
+\r
+ @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r
+\r
+**/\r
EFI_STATUS\r
IScsiConnLogin (\r
IN ISCSI_CONNECTION *Conn\r
);\r
\r
+/**\r
+ Create a TCP connection for the iSCSI session.\r
+\r
+ @param Private[in] The iSCSI driver data.\r
+\r
+ @param Session[in] Maximum CmdSN from the target.\r
+\r
+ @retval The newly created iSCSI connection.\r
+\r
+**/\r
ISCSI_CONNECTION *\r
IScsiCreateConnection (\r
IN ISCSI_DRIVER_DATA *Private,\r
IN ISCSI_SESSION *Session\r
);\r
\r
+/**\r
+ Destroy an iSCSI connection.\r
+\r
+ @param Conn[in] The connection to destroy.\r
+\r
+ @retval None.\r
+\r
+**/\r
VOID\r
IScsiDestroyConnection (\r
IN ISCSI_CONNECTION *Conn\r
);\r
\r
+/**\r
+ Login the iSCSI session.\r
+\r
+ @param Private[in] The iSCSI driver data.\r
+\r
+ @retval EFI_SUCCESS The iSCSI session login procedure finished.\r
+\r
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
+\r
+ @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r
+\r
+**/\r
EFI_STATUS\r
IScsiSessionLogin (\r
IN ISCSI_DRIVER_DATA *Private\r
);\r
\r
+/**\r
+ Build and send the iSCSI login request to the iSCSI target according to\r
+ the current login stage.\r
+\r
+ @param Conn[in] The connection in the iSCSI login phase.\r
+\r
+ @retval EFI_SUCCESS The iSCSI login request PDU is built and sent on this\r
+ connection.\r
+\r
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
+\r
+ @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r
+\r
+**/\r
EFI_STATUS\r
IScsiSendLoginReq (\r
IN ISCSI_CONNECTION *Conn\r
);\r
\r
+/**\r
+ Receive and process the iSCSI login response.\r
+\r
+ @param Conn[in] The connection in the iSCSI login phase.\r
+\r
+ @retval EFI_SUCCESS The iSCSI login response PDU is received and processed.\r
+\r
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
+\r
+ @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r
+\r
+**/\r
EFI_STATUS\r
IScsiReceiveLoginRsp (\r
IN ISCSI_CONNECTION *Conn\r
);\r
\r
+/**\r
+ Add an iSCSI key-value pair as a string into the data segment of the Login Request PDU.\r
+ The DataSegmentLength and the actual size of the net buffer containing this PDU will be\r
+ updated.\r
+\r
+ @param Pdu[in] The iSCSI PDU whose data segment the key-value pair will\r
+ be added to.\r
+\r
+ @param Key[in] The key name string.\r
+\r
+ @param Value[in] The value string.\r
+\r
+ @retval EFI_SUCCESS The key-valu pair is added to the PDU's datasegment and\r
+ the correspondence length fields are updated.\r
+\r
+ @retval EFI_OUT_OF_RESOURCES There is not enough space in the PDU to add the key-value\r
+ pair.\r
+\r
+**/\r
EFI_STATUS\r
IScsiAddKeyValuePair (\r
IN NET_BUF *Pdu,\r
IN CHAR8 *Value\r
);\r
\r
-NET_BUF *\r
+/**\r
+ Prepare the iSCSI login request to be sent according to the current login status.\r
+\r
+ @param Conn[in] The connection in the iSCSI login phase.\r
+\r
+ @retval The pointer to the net buffer containing the iSCSI login request built.\r
+\r
+**/\r
+NET_BUF *\r
IScsiPrepareLoginReq (\r
IN ISCSI_CONNECTION *Conn\r
);\r
\r
+/**\r
+ Process the iSCSI Login Response.\r
+\r
+ @param Conn[in] The connection on which the iSCSI login response is received.\r
+\r
+ @param Pdu[in] The iSCSI login response PDU.\r
+\r
+ @retval EFI_SUCCESS The iSCSI login response PDU is processed and all check are passed.\r
+\r
+ @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r
+\r
+**/\r
EFI_STATUS\r
IScsiProcessLoginRsp (\r
IN ISCSI_CONNECTION *Conn,\r
IN NET_BUF *Pdu\r
);\r
\r
+/**\r
+ Updated the target information according the data received in the iSCSI\r
+ login response with an target redirection status.\r
+\r
+ @param Session[in] The iSCSI session.\r
+\r
+ @param Data[in] The data segment which should contain the\r
+ TargetAddress key-value list.\r
+\r
+ @param Len[in] Length of the data.\r
+\r
+ @retval EFI_SUCCESS The target address is updated.\r
+\r
+ @retval EFI_OUT_OF_RESOURCES Failed to allocate memory.\r
+\r
+ @retval EFI_NOT_FOUND The TargetAddress key is not found.\r
+\r
+**/\r
EFI_STATUS\r
IScsiUpdateTargetAddress (\r
IN ISCSI_SESSION *Session,\r
IN UINT32 Len\r
);\r
\r
+/**\r
+ The callback function to free the net buffer list.\r
+\r
+ @param Arg[in] The opaque parameter.\r
+\r
+ @retval None.\r
+\r
+**/\r
VOID\r
IScsiFreeNbufList (\r
VOID *Arg\r
);\r
\r
+/**\r
+ Receive an iSCSI response PDU. An iSCSI response PDU contains an iSCSI PDU header and\r
+ an optional data segment. The two parts will be put into two blocks of buffers in the\r
+ net buffer. The digest check will be conducted in this function if needed and the digests\r
+ will be trimmed from the PDU buffer.\r
+\r
+ @param Conn[in] The iSCSI connection to receive data from.\r
+\r
+ @param Pdu[out] The received iSCSI pdu.\r
+\r
+ @param Context[in] The context used to describe information on the caller provided\r
+ buffer to receive data segment of the iSCSI pdu, it's optional.\r
+\r
+ @param HeaderDigest[in] Whether there will be header digest received.\r
+\r
+ @param DataDigest[in] Whether there will be data digest.\r
+\r
+ @param TimeoutEvent[in] The timeout event, it's optional.\r
+\r
+ @retval EFI_SUCCESS An iSCSI pdu is received.\r
+\r
+ @retval EFI_TIMEOUT Timeout happenend.\r
+\r
+**/\r
EFI_STATUS\r
IScsiReceivePdu (\r
IN ISCSI_CONNECTION *Conn,\r
IN EFI_EVENT TimeoutEvent OPTIONAL\r
);\r
\r
+/**\r
+ Check and get the result of the prameter negotiation.\r
+\r
+ @param Conn[in] The connection in iSCSI login.\r
+\r
+ @param Pdu[in] The iSCSI response PDU containing the parameter list.\r
+\r
+ @retval EFI_SUCCESS The parmeter check is passed and negotiation is finished.\r
+\r
+ @retval EFI_PROTOCOL_ERROR Some kind of iSCSI protocol error happened.\r
+\r
+**/\r
EFI_STATUS\r
IScsiCheckOpParams (\r
IN ISCSI_CONNECTION *Conn,\r
IN BOOLEAN Transit\r
);\r
\r
+/**\r
+ Fill the oprational prameters.\r
+\r
+ @param Conn[in] The connection in iSCSI login.\r
+\r
+ @param Pdu[in] The iSCSI login request PDU to fill the parameters.\r
+\r
+ @retval EFI_SUCCESS The parmeters are filled into the iSCSI login request PDU.\r
+\r
+ @retval EFI_OUT_OF_RESOURCES There is not enough space in the PDU to hold the parameters.\r
+\r
+**/\r
EFI_STATUS\r
IScsiFillOpParams (\r
IN ISCSI_CONNECTION *Conn,\r
IN NET_BUF *Pdu\r
);\r
\r
+/**\r
+ Pad the iSCSI AHS or data segment to an integer number of 4 byte words.\r
+\r
+ @param Pdu[in] The iSCSI pdu which contains segments to pad.\r
+\r
+ @param Len[in] The length of the last semgnet in the PDU.\r
+\r
+ @retval EFI_SUCCESS The segment is padded or no need to pad it.\r
+\r
+ @retval EFI_OUT_OF_RESOURCES There is not enough remaining free space to add the\r
+ padding bytes.\r
+\r
+**/\r
EFI_STATUS\r
IScsiPadSegment (\r
IN NET_BUF *Pdu,\r
IN UINT32 Len\r
);\r
\r
-LIST_ENTRY *\r
+/**\r
+ Build a key-value list from the data segment.\r
+\r
+ @param Data[in] The data segment containing the key-value pairs.\r
+\r
+ @param Len[in] Length of the data segment.\r
+\r
+ @retval The key-value list.\r
+\r
+**/\r
+LIST_ENTRY *\r
IScsiBuildKeyValueList (\r
IN CHAR8 *Data,\r
IN UINT32 Len\r
);\r
\r
-CHAR8 *\r
+/**\r
+ Get the value string by the key name from the key-value list. If found,\r
+ the key-value entry will be removed from the list.\r
+\r
+ @param KeyValueList[in] The key-value list.\r
+\r
+ @param Key[in] The key name to find.\r
+\r
+ @retval The value string.\r
+\r
+**/\r
+CHAR8 *\r
IScsiGetValueByKeyFromList (\r
IN LIST_ENTRY *KeyValueList,\r
IN CHAR8 *Key\r
);\r
\r
+/**\r
+ Free the key-value list.\r
+\r
+ @param KeyValueList[in] The key-value list.\r
+ \r
+ @retval None.\r
+\r
+**/\r
VOID\r
IScsiFreeKeyValueList (\r
IN LIST_ENTRY *KeyValueList\r
);\r
\r
+/**\r
+ Normalize the iSCSI name according to RFC.\r
+\r
+ @param Name[in] The iSCSI name.\r
+\r
+ @param Len[in] length of the iSCSI name.\r
+\r
+ @retval EFI_SUCCESS The iSCSI name is valid and normalized.\r
+\r
+ @retval EFI_PROTOCOL_ERROR The iSCSI name is mal-formatted or not in the IQN format.\r
+\r
+**/\r
EFI_STATUS\r
IScsiNormalizeName (\r
IN CHAR8 *Name,\r
IN UINTN Len\r
);\r
\r
+/**\r
+ Execute the SCSI command issued through the EXT SCSI PASS THRU protocol.\r
+\r
+ @param PassThru[in] The EXT SCSI PASS THRU protocol.\r
+\r
+ @param Target[in] The target ID.\r
+\r
+ @param Lun[in] The LUN.\r
+\r
+ @param Packet[in][out] The request packet containing IO request, SCSI command\r
+ buffer and buffers to read/write.\r
+\r
+ @retval EFI_SUCCES The SCSI command is executed and the result is updated to \r
+ the Packet.\r
+\r
+ @retval EFI_DEVICE_ERROR Some unexpected error happened.\r
+\r
+**/\r
EFI_STATUS\r
IScsiExecuteScsiCommand (\r
IN EFI_EXT_SCSI_PASS_THRU_PROTOCOL *PassThru,\r
IN OUT EFI_EXT_SCSI_PASS_THRU_SCSI_REQUEST_PACKET *Packet\r
);\r
\r
+/**\r
+ Reinstate the session on some error.\r
+\r
+ @param Private[in] The iSCSI driver data.\r
+\r
+ @retval EFI_SUCCES The session is reinstated from some error.\r
+\r
+ @retval other Reinstatement failed.\r
+\r
+**/\r
EFI_STATUS\r
IScsiSessionReinstatement (\r
IN ISCSI_DRIVER_DATA *Private\r
);\r
\r
+/**\r
+ Initialize some session parameters before login.\r
+\r
+ @param Session[in] The iSCSI session.\r
+\r
+ @param Recovery[in] Whether the request is from a fresh new start or recovery.\r
+\r
+ @retval None.\r
+\r
+**/\r
VOID\r
IScsiSessionInit (\r
IN ISCSI_SESSION *Session,\r
IN BOOLEAN Recovery\r
);\r
\r
+/**\r
+ Abort the iSCSI session, that is, reset all the connection and free the\r
+ resources.\r
+\r
+ @param Session[in] The iSCSI session.\r
+\r
+ @retval EFI_SUCCES The session is aborted.\r
+\r
+**/\r
EFI_STATUS\r
IScsiSessionAbort (\r
IN ISCSI_SESSION *Session\r
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