Release 4.7 include/scsi/iser.h
/*
* Copyright (c) 2015 Mellanox Technologies. All rights reserved.
*
* This software is available to you under a choice of one of two
* licenses. You may choose to be licensed under the terms of the GNU
* General Public License (GPL) Version 2, available from the file
* COPYING in the main directory of this source tree, or the
* OpenIB.org BSD license below:
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above
* copyright notice, this list of conditions and the following
* disclaimer.
*
* - Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef ISCSI_ISER_H
#define ISCSI_ISER_H
#define ISER_ZBVA_NOT_SUP 0x80
#define ISER_SEND_W_INV_NOT_SUP 0x40
#define ISERT_ZBVA_NOT_USED 0x80
#define ISERT_SEND_W_INV_NOT_USED 0x40
#define ISCSI_CTRL 0x10
#define ISER_HELLO 0x20
#define ISER_HELLORPLY 0x30
#define ISER_VER 0x10
#define ISER_WSV 0x08
#define ISER_RSV 0x04
/**
* struct iser_cm_hdr - iSER CM header (from iSER Annex A12)
*
* @flags: flags support (zbva, send_w_inv)
* @rsvd: reserved
*/
struct iser_cm_hdr {
u8 flags;
u8 rsvd[3];
}
__packed;
/**
* struct iser_ctrl - iSER header of iSCSI control PDU
*
* @flags: opcode and read/write valid bits
* @rsvd: reserved
* @write_stag: write rkey
* @write_va: write virtual address
* @reaf_stag: read rkey
* @read_va: read virtual address
*/
struct iser_ctrl {
u8 flags;
u8 rsvd[3];
__be32 write_stag;
__be64 write_va;
__be32 read_stag;
__be64 read_va;
}
__packed;
#endif /* ISCSI_ISER_H */
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