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fix bugs and make it run basically

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This commit is contained in:
Lei Xue
2016-08-27 20:07:51 +08:00
parent f97ab027de
commit aedc09021f
22 changed files with 1997 additions and 431 deletions
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218
pkg/port/iscsit/cmd.go
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@@ -4,6 +4,8 @@ import (
"bytes"
"fmt"
"strings"
"github.com/gostor/gotgt/pkg/util"
)
type OpCode int
@@ -52,6 +54,8 @@ var opCodeMap = map[OpCode]string{
OpReject: "Reject",
}
const DataPadding = 4
type ISCSICommand struct {
OpCode OpCode
RawHeader []byte
@@ -68,7 +72,7 @@ type ISCSICommand struct {
ExpStatSN uint32 // Expected status serial.
Read, Write bool
LUN uint8
LUN [8]uint8
Transit bool // Transit bit.
Cont bool // Continue bit.
CSG, NSG Stage // Current Stage, Next Stage.
@@ -102,6 +106,10 @@ func (cmd *ISCSICommand) Bytes() []byte {
return cmd.scsiCmdRespBytes()
case OpSCSIIn:
return cmd.dataInBytes()
case OpTextResp:
return cmd.textRespBytes()
case OpNoopIn:
return cmd.noopInBytes()
}
return nil
}
@@ -155,16 +163,8 @@ func ParseUint(data []byte) uint64 {
return out
}
func MarshalUint64(i uint64) []byte {
var data []byte
for j := 0; j < 8; j++ {
b := byte(i >> uint(8*(7-j)) & 0xff)
data = append(data, b)
}
return data
}
func parseHeader(data []byte) (*ISCSICommand, error) {
if len(data) != 48 {
if len(data) != BHS_SIZE {
return nil, fmt.Errorf("garbled header")
}
// TODO: sync.Pool
@@ -177,7 +177,7 @@ func parseHeader(data []byte) (*ISCSICommand, error) {
m.TaskTag = uint32(ParseUint(data[16:20]))
switch m.OpCode {
case OpSCSICmd:
m.LUN = uint8(data[9])
m.LUN = [8]uint8{data[9]}
m.ExpectedDataLen = uint32(ParseUint(data[20:24]))
m.CmdSN = uint32(ParseUint(data[24:28]))
m.Read = data[1]&0x40 == 0x40
@@ -185,7 +185,7 @@ func parseHeader(data []byte) (*ISCSICommand, error) {
m.CDB = data[32:48]
m.ExpStatSN = uint32(ParseUint(data[28:32]))
case OpSCSIResp:
case OpLoginReq:
case OpLoginReq, OpTextReq, OpNoopOut, OpLogoutReq:
m.Transit = m.Final
m.Cont = data[1]&0x40 == 0x40
if m.Cont && m.Transit {
@@ -229,13 +229,13 @@ func (m *ISCSICommand) scsiCmdRespBytes() []byte {
for i := 0; i < 3*4; i++ {
buf.WriteByte(0x00)
}
buf.Write(MarshalUint64(uint64(m.TaskTag))[4:])
buf.Write(util.MarshalUint64(uint64(m.TaskTag))[4:])
for i := 0; i < 4; i++ {
buf.WriteByte(0x00)
}
buf.Write(MarshalUint64(uint64(m.StatSN))[4:])
buf.Write(MarshalUint64(uint64(m.ExpCmdSN))[4:])
buf.Write(MarshalUint64(uint64(m.MaxCmdSN))[4:])
buf.Write(util.MarshalUint64(uint64(m.StatSN))[4:])
buf.Write(util.MarshalUint64(uint64(m.ExpCmdSN))[4:])
buf.Write(util.MarshalUint64(uint64(m.MaxCmdSN))[4:])
for i := 0; i < 3*4; i++ {
buf.WriteByte(0x00)
}
@@ -259,24 +259,22 @@ func (m *ISCSICommand) dataInBytes() []byte {
}
buf.WriteByte(b)
buf.WriteByte(0x00) // 4
buf.Write(MarshalUint64(uint64(len(m.RawData)))[5:]) // 5-8
buf.WriteByte(0x00)
buf.WriteByte(byte(m.LUN))
buf.WriteByte(0x00) // 4
buf.Write(util.MarshalUint64(uint64(len(m.RawData)))[5:]) // 5-8
// Skip through to byte 16
for i := 0; i < 6; i++ {
buf.WriteByte(0x00)
for i := 0; i < 8; i++ {
buf.WriteByte(byte(m.LUN[i]))
}
buf.Write(MarshalUint64(uint64(m.TaskTag))[4:])
buf.Write(util.MarshalUint64(uint64(m.TaskTag))[4:])
for i := 0; i < 4; i++ {
// 11.7.4
buf.WriteByte(0xff)
}
buf.Write(MarshalUint64(uint64(m.StatSN))[4:])
buf.Write(MarshalUint64(uint64(m.ExpCmdSN))[4:])
buf.Write(MarshalUint64(uint64(m.MaxCmdSN))[4:])
buf.Write(MarshalUint64(uint64(m.DataSN))[4:])
buf.Write(MarshalUint64(uint64(m.BufferOffset))[4:])
buf.Write(util.MarshalUint64(uint64(m.StatSN))[4:])
buf.Write(util.MarshalUint64(uint64(m.ExpCmdSN))[4:])
buf.Write(util.MarshalUint64(uint64(m.MaxCmdSN))[4:])
buf.Write(util.MarshalUint64(uint64(m.DataSN))[4:])
buf.Write(util.MarshalUint64(uint64(m.BufferOffset))[4:])
for i := 0; i < 4; i++ {
buf.WriteByte(0x00)
}
@@ -290,123 +288,79 @@ func (m *ISCSICommand) dataInBytes() []byte {
return buf.Bytes()
}
type InquiryData struct {
PeripheralQualifier int
PeripheralType int
Removable bool
Version int
SupportsACA bool
Hierarchical bool
SupportsSCC bool
HasACC bool
TargetGroupSupport int
ThirdPartyCopy bool
Protect bool
EnclosureServices bool
Multiport bool
MediaChanger bool
Vendor [8]byte
Product [16]byte
RevisionLevel [4]byte
SerialNumber uint64
}
func (id *InquiryData) bytes() []byte {
func (m *ISCSICommand) textRespBytes() []byte {
buf := &bytes.Buffer{}
buf.WriteByte(byte(OpTextResp))
var b byte
b = (uint8(id.PeripheralQualifier) << 5) & 0xe0
b |= uint8(id.PeripheralType) & 0x1f
buf.WriteByte(b)
b = 0
if id.Removable {
b = 0x80
}
buf.WriteByte(b)
buf.WriteByte(byte(id.Version))
b = 0x02
if id.SupportsACA {
b |= 0x20
}
if id.Hierarchical {
b |= 0x10
}
buf.WriteByte(b)
buf.WriteByte(0x00)
// byte 5
b = 0
if id.SupportsSCC {
if m.Final {
b |= 0x80
}
if id.HasACC {
if m.Cont {
b |= 0x40
}
b |= byte(id.TargetGroupSupport) << 4 & 0x30
if id.ThirdPartyCopy {
b |= 0x08
}
if id.Protect {
b |= 0x01
}
// byte 1
buf.WriteByte(b)
// byte 6
b = 0
if id.EnclosureServices {
b |= 0x40
}
if id.Multiport {
b |= 0x10
}
if id.MediaChanger {
b |= 0x08
}
buf.WriteByte(b)
buf.WriteByte(0x02)
buf.Write(id.Vendor[:])
buf.Write(id.Product[:])
buf.Write(id.RevisionLevel[:])
buf.Write(MarshalUint64(id.SerialNumber))
for i := 0; i < 12; i++ {
buf.WriteByte(b)
buf.WriteByte(b)
buf.Write(util.MarshalUint64(uint64(len(m.RawData)))[5:]) // 5-8
// Skip through to byte 12
for i := 0; i < 2*4; i++ {
buf.WriteByte(0x00)
}
data := buf.Bytes()
data[4] = byte(len(data) - 4)
return data
}
type Capacity struct {
LBA uint64
Blocksize uint32
ProtectionType uint8
PIExponent uint8
LogicalExponent uint8
ThinProvisioned bool
ThinProvReturnsZeros bool
LowestLBA uint16
}
func (c *Capacity) bytes() []byte {
// table 111
// http://www.seagate.com/staticfiles/support/disc/manuals/Interface%20manuals/100293068c.pdf
buf := &bytes.Buffer{}
buf.Write(MarshalUint64(c.LBA))
buf.Write(MarshalUint64(uint64(c.Blocksize))[4:])
var b byte
if c.ProtectionType > 0 {
b |= 0x01
b |= c.ProtectionType << 1
b &= 0x0f
buf.Write(util.MarshalUint64(uint64(m.TaskTag))[4:])
for i := 0; i < 4; i++ {
buf.WriteByte(0xff)
}
buf.WriteByte(b)
b = c.PIExponent << 4
b |= c.LogicalExponent
buf.WriteByte(b)
lowLBA := MarshalUint64(uint64(c.LowestLBA))[6:]
lowLBA[0] &= 0x3f
if c.ThinProvisioned {
lowLBA[0] &= 0x80
buf.Write(util.MarshalUint64(uint64(m.StatSN))[4:])
buf.Write(util.MarshalUint64(uint64(m.ExpCmdSN))[4:])
buf.Write(util.MarshalUint64(uint64(m.MaxCmdSN))[4:])
for i := 0; i < 3*4; i++ {
buf.WriteByte(0x00)
}
if c.ThinProvReturnsZeros {
lowLBA[0] &= 0x40
rd := m.RawData
for len(rd)%4 != 0 {
rd = append(rd, 0)
}
buf.Write(rd)
return buf.Bytes()
}
func (m *ISCSICommand) noopInBytes() []byte {
buf := &bytes.Buffer{}
buf.WriteByte(byte(OpNoopIn))
var b byte
b |= 0x80
// byte 1
buf.WriteByte(b)
b = 0
buf.WriteByte(b)
buf.WriteByte(b)
buf.WriteByte(b)
buf.Write(util.MarshalUint64(uint64(len(m.RawData)))[5:]) // 5-8
// Skip through to byte 12
for i := 0; i < 2*4; i++ {
buf.WriteByte(0x00)
}
buf.Write(util.MarshalUint64(uint64(m.TaskTag))[4:])
for i := 0; i < 4; i++ {
buf.WriteByte(0xff)
}
buf.Write(util.MarshalUint64(uint64(m.StatSN))[4:])
buf.Write(util.MarshalUint64(uint64(m.ExpCmdSN))[4:])
buf.Write(util.MarshalUint64(uint64(m.MaxCmdSN))[4:])
for i := 0; i < 3*4; i++ {
buf.WriteByte(0x00)
}
rd := m.RawData
for len(rd)%4 != 0 {
rd = append(rd, 0)
}
buf.Write(rd)
return buf.Bytes()
}