init commit

pkg/port/iscsit/session.go

@@ -0,0 +1,84 @@
+/*
+Copyright 2015 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.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package iscsit
+
+import "crypto/rand"
+
+type ISCSISessionParam struct {
+	State int
+	Value uint
+}
+
+// Session is an iSCSI session.
+type ISCSISession struct {
+	Refcount       int
+	Initiator      string
+	InitiatorAlias string
+	Target         *ISCSITarget
+	Isid           uint64
+	Tsih           uint16
+	// only one connection per session
+	Connections        []*ISCSIConnection
+	Commands           []*ISCSICommand
+	PendingCommands    []*ISCSICommand
+	ExpectionCommandSN uint32
+	MaxQueueCommand    uint32
+	SessionParam       []ISCSISessionParam
+	Info               string
+	Rdma               int
+}
+
+type ISCSIPdu struct {
+	Bhs      ISCSIHeader
+	AhsSize  uint
+	DataSize uint
+}
+
+type ISCSIConnection struct {
+	State     int
+	RxIostate int
+	TxIostate int
+	Refcount  int
+
+	Session *ISCSISession
+
+	TID                int
+	CID                int
+	Auth               AuthMethod
+	StatSN             uint32
+	ExpectionStatSN    uint32
+	CommandSN          uint32
+	ExpectionCommandSN uint32
+	MaxCommandSN       uint32
+	Request            ISCSIPdu
+	Response           ISCSIPdu
+}
+
+// New creates a new session.
+func NewISCSISession() (*ISCSISession, error) {
+	var tsih uint16
+	b := make([]byte, 2)
+	if _, err := rand.Read(b); err != nil {
+		return nil, err
+	}
+	tsih += uint16(b[0]) << 8
+	tsih += uint16(b[1])
+
+	return &Session{
+		Tsih: tsih,
+	}, nil
+}