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 */
54 struct 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 */
69 struct 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 */