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 */ 79