definition of the iscsi wire protocol stuff.

ok deraadt@

1 files changed, 510 insertions, 0 deletions

diff --git a/sys/scsi/iscsi.h b/sys/scsi/iscsi.h
new file mode 100644
index 00000000000..ca046dfb37d
--- /dev/null
+++ b/sys/scsi/iscsi.h
@@ -0,0 +1,510 @@
+/*	$OpenBSD: iscsi.h,v 1.1 2008/11/26 22:14:39 dlg Exp $ */
+
+/*
+ * Copyright (c) 2008 David Gwynne <dlg@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _SYS_SCSI_ISCSI_H
+#define _SYS_SCSI_ISCSI_H
+
+#define ISCSI_OP_
+
+struct iscsi_pdu {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved1[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	itt;
+
+	u_int8_t	_reserved2[28];
+} __packed;
+
+/*
+ * Initiator opcodes
+ */
+
+#define ISCSI_OP_I_NOP			0x00
+#define ISCSI_OP_SCSI_REQUEST		0x01
+#define ISCSI_OP_TASK_REQUEST		0x02
+#define ISCSI_OP_LOGIN_REQUEST		0x03
+#define ISCSI_OP_TEXT_REQUEST		0x04
+#define ISCSI_OP_DATA_OUT		0x05
+#define ISCSI_OP_LOGOUT_REQUEST		0x06
+#define ISCSI_OP_SNACK_REQUEST		0x10
+
+/*
+ * Target opcodes
+ */
+
+#define ISCSI_OP_T_NOP			0x20
+#define ISCSI_OP_SCSI_RESPONSE		0x21
+#define ISCSI_OP_TASK_RESPONSE		0x22
+#define ISCSI_OP_LOGIN_RESPONSE		0x23
+#define ISCSI_OP_TEXT_RESPONSE		0x24
+#define ISCSI_OP_DATA_IN		0x25
+#define ISCSI_OP_LOGOUT_RESPONSE	0x26
+#define ISCSI_OP_R2T			0x27
+#define ISCSI_OP_ASYNC			0x28
+
+#define ISCSI_PDU_OPCODE(_o)		((_o) & 0x3f)
+#define ISCSI_PDU_I(_h)			((_h)->opcode & 0x40)
+#define ISCSI_PDU_F(_h)			((_h)->flags & 0x80)
+
+struct iscsi_pdu_scsi_request {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	itt;
+
+	u_int32_t	bytes;
+
+	u_int32_t	cmdsn;
+
+	u_int32_t	expstatsn;
+
+	u_int8_t	cdb[16];
+} __packed;
+
+struct iscsi_pdu_scsi_response {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	response;
+	u_int8_t	status;
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	_reserved[8];
+
+	u_int32_t	itt;
+
+	u_int32_t	snack;
+
+	u_int32_t	statsn;
+
+	u_int32_t	expcmdsn;
+
+	u_int32_t	maxcmdsn;
+
+	u_int32_t	expdatasn;
+} __packed;
+
+struct iscsi_pdu_task_request {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	reserved[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	itt;
+
+	u_int32_t	tag;
+
+	u_int32_t	cmdsn;
+
+	u_int32_t	expstatsn;
+
+	u_int32_t	refcmdsn;
+
+	u_int32_t	expdatasn;
+
+	u_int8_t	_reserved[8];
+} __packed;
+
+struct iscsi_pdu_task_response {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	response;
+	u_int8_t	_reserved1;
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	_reserved2[4];
+
+	u_int32_t	statsn;
+
+	u_int32_t	expcmdsn;
+
+	u_int32_t	maxcmdsn;
+
+	u_int8_t	_reserved3[12];
+} __packed;
+
+struct iscsi_pdu_data_out {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved1[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	itt;
+
+	u_int32_t	ttt;
+
+	u_int8_t	_reserved2[4];
+
+	u_int32_t	expstatsn;
+
+	u_int8_t	_reserved3[4];
+
+	u_int32_t	datasn;
+
+	u_int32_t	buffer_offs;
+
+	u_int8_t	_reserved4[4];
+} __packed;
+
+struct iscsi_pdu_data_in {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved;
+	u_int8_t	status;
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	itt;
+
+	u_int32_t	ttt;
+
+	u_int8_t	statsn[4];
+
+	u_int8_t	expcmdsn[4];
+
+	u_int8_t	maxcmdsn[4];
+
+	u_int8_t	datasn[4];
+
+	u_int8_t	buffer_offs[4];
+
+	u_int8_t	residual[4];
+} __packed;
+
+struct iscsi_pdu_rt2 {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved1[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	itt;
+
+	u_int32_t	ttt;
+
+	u_int32_t	statsn;
+
+	u_int32_t	expcmdsn;
+
+	u_int32_t	maxcmdsn;
+
+	u_int32_t	r2tsn;
+
+	u_int32_t	buffer_offs;
+
+	u_int32_t	desired_datalen;
+} __packed;
+
+struct iscsi_pdu_async {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved1[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	ffffffff;
+
+	u_int8_t	_reserved2[4];
+
+	u_int32_t	statsn;
+
+	u_int32_t	expstatsn;
+
+	u_int32_t	maxstatsn;
+
+	u_int8_t	event;
+	u_int8_t	vcode;
+	u_int32_t	param[3];
+
+	u_int8_t	_reserved3[4];
+} __packed;
+
+struct iscsi_pdu_text_request {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved1[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	itt;
+
+	u_int32_t	ttt;
+
+	u_int32_t	cmdsn;
+
+	u_int32_t	expstatsn;
+
+	u_int8_t	_reserved2[16];
+} __packed;
+
+struct iscsi_pdu_text_response {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved1[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	itt;
+
+	u_int32_t	ttt;
+
+	u_int32_t	cmdsn;
+
+	u_int32_t	expcmdsn;
+
+	u_int32_t	maxcmdsn;
+
+	u_int8_t	_reserved2[12];
+} __packed;
+
+struct iscsi_pdu_login_request {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	version_max;
+	u_int8_t	version_min;
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	isid[6];
+	u_int8_t	tsih[2];
+
+	u_int32_t	itt;
+
+	u_int16_t	cid;
+	u_int8_t	_reserved1[2];
+
+	u_int32_t	cmdsn;
+
+	u_int32_t	expstatsn;
+
+	u_int8_t	_reserved2[16];
+} __packed;
+
+struct iscsi_pdu_login_response {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	version_max;
+	u_int8_t	version_active;
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	isid[6];
+	u_int8_t	tsih[2];
+
+	u_int32_t	itt;
+
+	u_int8_t	_reserved1[4];
+
+	u_int32_t	statsn;
+
+	u_int32_t	expcmdsn;
+
+	u_int32_t	maxcmdsn;
+
+	u_int8_t	status_class;
+	u_int8_t	status_detail;
+
+	u_int8_t	_reserved2[10];
+} __packed;
+
+struct iscsi_pdu_logout_request {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved1[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	_reserved2[8];
+
+	u_int32_t	itt;
+
+	u_int16_t	cid;
+	u_int8_t	_reserved3[2];
+
+	u_int32_t	cmdsn;
+
+	u_int32_t	expstatsn;
+
+	u_int8_t	_reserved4[16];
+} __packed;
+
+struct iscsi_pdu_logout_response {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved1[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	_reserved2[8];
+
+	u_int32_t	itt;
+
+	u_int8_t	_reserved3[4];
+
+	u_int32_t	statsn;
+
+	u_int32_t	expcmdsn;
+
+	u_int32_t	maxcmdsn;
+
+	u_int8_t	_reserved4[4];
+
+	u_int16_t	time2wait;
+	u_int16_t	time2retain;
+
+	u_int8_t	_reserved5[4];
+} __packed;
+
+struct iscsi_pdu_snack_request {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved1[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	itt;
+
+	u_int32_t	ttt;
+
+	u_int8_t	_reserved2[4];
+
+	u_int32_t	expstatsn;
+
+	u_int8_t	_reserved3[8];
+
+	u_int32_t	begrun;
+
+	u_int32_t	runlength;
+} __packed;
+
+struct iscsi_pdu_reject {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	reason;
+	u_int8_t	_reserved1;
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	_reserved2[8];
+
+	u_int32_t	ffffffff;
+
+	u_int8_t	_reserved3[4];
+
+	u_int32_t	statsn;
+
+	u_int32_t	expcmdsn;
+
+	u_int32_t	maxcmdsn;
+
+	u_int32_t	datasn_r2tsn;
+
+	u_int8_t	_reserved4[8];
+} __packed;
+
+struct iscsi_pdu_nop_out {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved1[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	itt;
+
+	u_int32_t	ttt;
+
+	u_int32_t	cmdsn;
+
+	u_int32_t	expstatsn;
+
+	u_int8_t	_reserved2[16];
+} __packed;
+
+struct iscsi_pdu_nop_in {
+	u_int8_t	opcode;
+	u_int8_t	flags;
+	u_int8_t	_reserved1[2];
+
+	u_int8_t	ahslen;
+	u_int8_t	datalen[3];
+
+	u_int8_t	lun[8];
+
+	u_int32_t	itt;
+
+	u_int32_t	ttt;
+
+	u_int32_t	statsn;
+
+	u_int32_t	expcmdsn;
+
+	u_int32_t	maxcmdsn;
+
+	u_int8_t	_reserved2[12];
+} __packed;
+
+#endif /* _SYS_SCSI_ISCSI_H */