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This commit is contained in:
Lei Xue
2016-11-24 21:02:17 +08:00
parent 35765e7f4d
commit f4197d0024
6 changed files with 305 additions and 221 deletions
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212
pkg/scsi/cmd.go
View File

@@ -1,5 +1,5 @@
/*
Copyright 2015 The GoStor Authors All rights reserved.
Copyright 2016 The GoStor Authors All rights reserved.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
@@ -24,13 +24,13 @@ type SCSIPRServiceAction byte
type SCSIPRType byte
var (
/* PERSISTENT_RESERVE_IN service action codes */
// PERSISTENT_RESERVE_IN service action codes
PR_IN_READ_KEYS SCSIPRServiceAction = 0x00
PR_IN_READ_RESERVATION SCSIPRServiceAction = 0x01
PR_IN_REPORT_CAPABILITIES SCSIPRServiceAction = 0x02
PR_IN_READ_FULL_STATUS SCSIPRServiceAction = 0x03
/* PERSISTENT_RESERVE_OUT service action codes */
// PERSISTENT_RESERVE_OUT service action codes
PR_OUT_REGISTER SCSIPRServiceAction = 0x00
PR_OUT_RESERVE SCSIPRServiceAction = 0x01
PR_OUT_RELEASE SCSIPRServiceAction = 0x02
@@ -40,10 +40,10 @@ var (
PR_OUT_REGISTER_AND_IGNORE_EXISTING_KEY SCSIPRServiceAction = 0x06
PR_OUT_REGISTER_AND_MOVE SCSIPRServiceAction = 0x07
/* Persistent Reservation scope */
// Persistent Reservation scope
PR_LU_SCOPE byte = 0x00
/* Persistent Reservation Type Mask format */
// Persistent Reservation Type Mask format
PR_TYPE_WRITE_EXCLUSIVE SCSIPRType = 0x01
PR_TYPE_EXCLUSIVE_ACCESS SCSIPRType = 0x03
PR_TYPE_WRITE_EXCLUSIVE_REGONLY SCSIPRType = 0x05
@@ -53,31 +53,185 @@ var (
)
const (
CBD_GROUPID_0 = iota
CBD_GROUPID_1
CBD_GROUPID_2
CBD_GROUPID_3
CBD_GROUPID_4
CBD_GROUPID_5
CBD_GROUPID_6
CBD_GROUPID_7
)
const (
CDB_GROUP0 = 6 /* 6-byte commands */
CDB_GROUP1 = 10 /* 10-byte commands */
CDB_GROUP2 = 10 /* 10-byte commands */
CDB_GROUP3 = 0 /* reserved */
CDB_GROUP4 = 16 /* 16-byte commands */
CDB_GROUP5 = 12 /* 12-byte commands */
CDB_GROUP6 = 0 /* vendor specific */
CDB_GROUP7 = 0 /* vendor specific */
CDB_GROUPID_0 = 6 /* 6-byte commands */
CDB_GROUPID_1 = 10 /* 10-byte commands */
CDB_GROUPID_2 = 10 /* 10-byte commands */
CDB_GROUPID_3 = 0 /* reserved */
CDB_GROUPID_4 = 16 /* 16-byte commands */
CDB_GROUPID_5 = 12 /* 12-byte commands */
CDB_GROUPID_6 = 0 /* vendor specific */
CDB_GROUPID_7 = 0 /* vendor specific */
)
func SCSICDBGroupID(opcode byte) byte {
return ((opcode >> 5) & 0x7)
}
/*
* Protocol Identifier Values
*
* 0 Fibre Channel (FCP-2)
* 1 Parallel SCSI (SPI-5)
* 2 SSA (SSA-S3P)
* 3 IEEE 1394 (SBP-3)
* 4 SCSI Remote Direct Memory Access (SRP)
* 5 iSCSI
* 6 SAS Serial SCSI Protocol (SAS)
* 7 Automation/Drive Interface (ADT)
* 8 AT Attachment Interface (ATA/ATAPI-7)
*/
const (
PIV_FCP = byte(0x00)
PIV_SPI = byte(0x01)
PIV_S3P = byte(0x02)
PIV_SBP = byte(0x03)
PIV_SRP = byte(0x04)
PIV_ISCSI = byte(0x05)
PIV_SAS = byte(0x06)
PIV_ADT = byte(0x07)
PIV_ATA = byte(0x08)
PIV_USB = byte(0x09)
PIV_SOP = byte(0x0A)
)
const (
VERSION_NOT_CLAIM = byte(0x00)
VERSION_WITHDRAW_STANDARD = byte(0x03)
VERSION_WITHDRAW_SPC2 = byte(0x04)
VERSION_WITHDRAW_SPC3 = byte(0x05)
)
/*
* Code Set
*
* 1 - Designator fild contains binary values
* 2 - Designator field contains ASCII printable chars
* 3 - Designaotor field contains UTF-8
*/
const (
INQ_CODE_BIN = byte(1)
INQ_CODE_ASCII = byte(2)
INQ_CODE_UTF8 = byte(3)
)
/*
* Association field
*
* 00b - Associated with Logical Unit
* 01b - Associated with target port
* 10b - Associated with SCSI Target device
* 11b - Reserved
*/
const (
ASS_LU = byte(0x00)
ASS_TGT_PORT = byte(0x01)
ASS_TGT_DEV = byte(0x02)
)
/*
* Table 177 — PERIPHERAL QUALIFIER field
* Qualifier Description
* 000b - A peripheral device having the indicated peripheral
* device type is connected to this logical unit. If the device server is
* unable to determine whether or not a peripheral device is connected,
* then the device server also shall use this peripheral qualifier.
* This peripheral qualifier does not indicate that the peripheral
* device connected to the logical unit is ready for access.
* 001b - A peripheral device having the indicated peripheral device type
* is not connected to this logical unit. However, the device server is capable of
* supporting the indicated peripheral device type on this logical unit.
* 010b - Reserved
* 011b - The device server is not capable of supporting a
* peripheral device on this logical unit. For this peripheral
* qualifier the peripheral device type shall be set to 1Fh. All other peripheral
* device type values are reserved for this peripheral qualifier.
* 100b to 111b Vendor specific
*/
const (
PQ_DEVICE_CONNECTED = byte(0x00 << 5)
PQ_DEVICE_NOT_CONNECT = byte(0x01 << 5)
PQ_RESERVED = byte(0x02 << 5)
PQ_NOT_SUPPORT = byte(0x03 << 5)
)
const (
INQUIRY_SCCS = byte(0x80)
INQUIRY_AAC = byte(0x40)
INQUIRY_TPGS_NO = byte(0x00)
INQUIRY_TPGS_IMPLICIT = byte(0x20)
INQUIRY_TPGS_EXPLICIT = byte(0x10)
INQUIRY_TPGS_BOTH = byte(0x30)
INQUIRY_3PC = byte(0x08)
INQUIRY_Reserved = byte(0x06)
INQUIRY_PROTECT = byte(0x01)
INQUIRY_NORM_ACA = byte(0x20)
INQUIRY_HISUP = byte(0x10)
INQUIRY_STANDARD_FORMAT = byte(0x02)
INQUIRY_ENCSERV = byte(0x40)
INQUIRY_VS0 = byte(0x20)
INQUIRY_MULTIP = byte(0x10)
INQUIRY_ADDR16 = byte(0x01)
INQUIRY_WBUS16 = byte(0x20)
INQUIRY_SYNC = byte(0x10)
INQUIRY_CMDQUE = byte(0x02)
INQUIRY_VS1 = byte(0x01)
INQUIRY_QAS = byte(0x02)
INQUIRY_IUS = byte(0x01)
)
const (
ADDRESS_METHOD_PERIPHERAL_DEVICE = byte(0x00)
ADDRESS_METHOD_FLAT_SPACE = byte(0x01)
ADDRESS_METHOD_LOGICAL_UNIT = byte(0x02)
ADDRESS_METHOD_EXTENDED_LOGICAL_UNIT = byte(0x03)
)
/*
* Designator type - SPC-4 Reference
*
* 0 - Vendor specific - 7.6.3.3
* 1 - T10 vendor ID - 7.6.3.4
* 2 - EUI-64 - 7.6.3.5
* 3 - NAA - 7.6.3.6
* 4 - Relative Target port identifier - 7.6.3.7
* 5 - Target Port group - 7.6.3.8
* 6 - Logical Unit group - 7.6.3.9
* 7 - MD5 logical unit identifier - 7.6.3.10
* 8 - SCSI name string - 7.6.3.11
*/
const (
DESG_VENDOR = iota
DESG_T10
DESG_EUI64
DESG_NAA
DESG_REL_TGT_PORT
DESG_TGT_PORT_GRP
DESG_LU_GRP
DESG_MD5
DESG_SCSI
)
const (
NAA_IEEE_EXTD = byte(0x2)
NAA_LOCAL = byte(0x3)
NAA_IEEE_REGD = byte(0x5)
NAA_IEEE_REGD_EXTD = byte(0x6)
)
const (
SCSIVendorID = "GOSTOR"
SCSIProductID = "GOTGT"
)
/*
* Transfer Length (if any)
* Parameter List Length (if any)
@@ -94,19 +248,19 @@ func SCSICDBBufXLength(scb []byte) (int64, bool) {
group = SCSICDBGroupID(opcode)
switch group {
case CBD_GROUPID_0:
case CDB_GROUPID_0:
length = int64(scb[4])
case CBD_GROUPID_1, CBD_GROUPID_2:
case CDB_GROUPID_2:
length = int64(util.GetUnalignedUint16(scb[7:9]))
case CBD_GROUPID_3:
case CDB_GROUPID_3:
if opcode == 0x7F {
length = int64(scb[7])
} else {
ok = false
}
case CBD_GROUPID_4:
case CDB_GROUPID_4:
length = int64(util.GetUnalignedUint32(scb[6:10]))
case CBD_GROUPID_5:
case CDB_GROUPID_5:
length = int64(util.GetUnalignedUint32(scb[10:14]))
default:
ok = false