1/*
2 * Copyright (c) 2015 Mellanox Technologies. All rights reserved.
3 *
4 * This software is available to you under a choice of one of two
5 * licenses.  You may choose to be licensed under the terms of the GNU
6 * General Public License (GPL) Version 2, available from the file
7 * COPYING in the main directory of this source tree, or the
8 * OpenIB.org BSD license below:
9 *
10 *     Redistribution and use in source and binary forms, with or
11 *     without modification, are permitted provided that the following
12 *     conditions are met:
13 *
14 *	- Redistributions of source code must retain the above
15 *	  copyright notice, this list of conditions and the following
16 *	  disclaimer.
17 *
18 *	- Redistributions in binary form must reproduce the above
19 *	  copyright notice, this list of conditions and the following
20 *	  disclaimer in the documentation and/or other materials
21 *	  provided with the distribution.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30 * SOFTWARE.
31 */
32#ifndef ISCSI_ISER_H
33#define ISCSI_ISER_H
34
35#define ISER_ZBVA_NOT_SUP		0x80
36#define ISER_SEND_W_INV_NOT_SUP		0x40
37#define ISERT_ZBVA_NOT_USED		0x80
38#define ISERT_SEND_W_INV_NOT_USED	0x40
39
40#define ISCSI_CTRL	0x10
41#define ISER_HELLO	0x20
42#define ISER_HELLORPLY	0x30
43
44#define ISER_VER	0x10
45#define ISER_WSV	0x08
46#define ISER_RSV	0x04
47
48/**
49 * struct iser_cm_hdr - iSER CM header (from iSER Annex A12)
50 *
51 * @flags:        flags support (zbva, send_w_inv)
52 * @rsvd:         reserved
53 */
54struct iser_cm_hdr {
55	u8      flags;
56	u8      rsvd[3];
57} __packed;
58
59/**
60 * struct iser_ctrl - iSER header of iSCSI control PDU
61 *
62 * @flags:        opcode and read/write valid bits
63 * @rsvd:         reserved
64 * @write_stag:   write rkey
65 * @write_va:     write virtual address
66 * @reaf_stag:    read rkey
67 * @read_va:      read virtual address
68 */
69struct iser_ctrl {
70	u8      flags;
71	u8      rsvd[3];
72	__be32  write_stag;
73	__be64  write_va;
74	__be32  read_stag;
75	__be64  read_va;
76} __packed;
77
78#endif /* ISCSI_ISER_H */
79