[SCSI] open-iscsi/linux-iscsi-5 Initiator: Header files
open-iscsi-headers.patch - common header files: - iscsi_if.h (user/kernel #defines and user/kernel events); - iscsi_proto.h (RFC3720 #defines and types); - scsi_transport_iscsi.h (transport API, transport #defines and types). Signed-off-by: Alex Aizman <itn780@yahoo.com> Signed-off-by: Dmitry Yusupov <dmitry_yus@yahoo.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
This commit is contained in:
Alex Aizman
James Bottomley
parent
885ececaa9
commit
39e84790d3
3 changed files with 866 additions and 147 deletions
245
include/scsi/iscsi_if.h
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245
include/scsi/iscsi_if.h
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/*
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* iSCSI User/Kernel Shares (Defines, Constants, Protocol definitions, etc)
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*
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* Copyright (C) 2005 Dmitry Yusupov
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* Copyright (C) 2005 Alex Aizman
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* maintained by open-iscsi@googlegroups.com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* See the file COPYING included with this distribution for more details.
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*/
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#ifndef ISCSI_IF_H
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#define ISCSI_IF_H
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#include <scsi/iscsi_proto.h>
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#define UEVENT_BASE 10
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#define KEVENT_BASE 100
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#define ISCSI_ERR_BASE 1000
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enum iscsi_uevent_e {
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ISCSI_UEVENT_UNKNOWN = 0,
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/* down events */
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ISCSI_UEVENT_CREATE_SESSION = UEVENT_BASE + 1,
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ISCSI_UEVENT_DESTROY_SESSION = UEVENT_BASE + 2,
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ISCSI_UEVENT_CREATE_CONN = UEVENT_BASE + 3,
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ISCSI_UEVENT_DESTROY_CONN = UEVENT_BASE + 4,
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ISCSI_UEVENT_BIND_CONN = UEVENT_BASE + 5,
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ISCSI_UEVENT_SET_PARAM = UEVENT_BASE + 6,
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ISCSI_UEVENT_START_CONN = UEVENT_BASE + 7,
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ISCSI_UEVENT_STOP_CONN = UEVENT_BASE + 8,
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ISCSI_UEVENT_SEND_PDU = UEVENT_BASE + 9,
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ISCSI_UEVENT_GET_STATS = UEVENT_BASE + 10,
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ISCSI_UEVENT_GET_PARAM = UEVENT_BASE + 11,
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/* up events */
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ISCSI_KEVENT_RECV_PDU = KEVENT_BASE + 1,
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ISCSI_KEVENT_CONN_ERROR = KEVENT_BASE + 2,
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ISCSI_KEVENT_IF_ERROR = KEVENT_BASE + 3,
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};
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struct iscsi_uevent {
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uint32_t type; /* k/u events type */
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uint32_t iferror; /* carries interface or resource errors */
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uint64_t transport_handle;
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union {
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/* messages u -> k */
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struct msg_create_session {
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uint32_t initial_cmdsn;
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} c_session;
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struct msg_destroy_session {
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uint64_t session_handle;
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uint32_t sid;
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} d_session;
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struct msg_create_conn {
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uint64_t session_handle;
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uint32_t cid;
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uint32_t sid;
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} c_conn;
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struct msg_bind_conn {
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uint64_t session_handle;
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uint64_t conn_handle;
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uint32_t transport_fd;
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uint32_t is_leading;
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} b_conn;
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struct msg_destroy_conn {
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uint64_t conn_handle;
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uint32_t cid;
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} d_conn;
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struct msg_send_pdu {
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uint32_t hdr_size;
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uint32_t data_size;
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uint64_t conn_handle;
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} send_pdu;
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struct msg_set_param {
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uint64_t conn_handle;
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uint32_t param; /* enum iscsi_param */
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uint32_t value;
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} set_param;
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struct msg_start_conn {
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uint64_t conn_handle;
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} start_conn;
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struct msg_stop_conn {
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uint64_t conn_handle;
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uint32_t flag;
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} stop_conn;
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struct msg_get_stats {
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uint64_t conn_handle;
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} get_stats;
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} u;
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union {
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/* messages k -> u */
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uint64_t handle;
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int retcode;
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struct msg_create_session_ret {
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uint64_t session_handle;
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uint32_t sid;
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} c_session_ret;
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struct msg_recv_req {
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uint64_t recv_handle;
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uint64_t conn_handle;
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} recv_req;
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struct msg_conn_error {
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uint64_t conn_handle;
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uint32_t error; /* enum iscsi_err */
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} connerror;
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} r;
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} __attribute__ ((aligned (sizeof(uint64_t))));
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/*
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* Common error codes
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*/
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enum iscsi_err {
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ISCSI_OK = 0,
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ISCSI_ERR_DATASN = ISCSI_ERR_BASE + 1,
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ISCSI_ERR_DATA_OFFSET = ISCSI_ERR_BASE + 2,
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ISCSI_ERR_MAX_CMDSN = ISCSI_ERR_BASE + 3,
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ISCSI_ERR_EXP_CMDSN = ISCSI_ERR_BASE + 4,
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ISCSI_ERR_BAD_OPCODE = ISCSI_ERR_BASE + 5,
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ISCSI_ERR_DATALEN = ISCSI_ERR_BASE + 6,
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ISCSI_ERR_AHSLEN = ISCSI_ERR_BASE + 7,
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ISCSI_ERR_PROTO = ISCSI_ERR_BASE + 8,
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ISCSI_ERR_LUN = ISCSI_ERR_BASE + 9,
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ISCSI_ERR_BAD_ITT = ISCSI_ERR_BASE + 10,
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ISCSI_ERR_CONN_FAILED = ISCSI_ERR_BASE + 11,
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ISCSI_ERR_R2TSN = ISCSI_ERR_BASE + 12,
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ISCSI_ERR_SESSION_FAILED = ISCSI_ERR_BASE + 13,
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ISCSI_ERR_HDR_DGST = ISCSI_ERR_BASE + 14,
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ISCSI_ERR_DATA_DGST = ISCSI_ERR_BASE + 15,
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ISCSI_ERR_PARAM_NOT_FOUND = ISCSI_ERR_BASE + 16
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};
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/*
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* iSCSI Parameters (RFC3720)
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*/
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enum iscsi_param {
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ISCSI_PARAM_MAX_RECV_DLENGTH = 0,
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ISCSI_PARAM_MAX_XMIT_DLENGTH = 1,
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ISCSI_PARAM_HDRDGST_EN = 2,
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ISCSI_PARAM_DATADGST_EN = 3,
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ISCSI_PARAM_INITIAL_R2T_EN = 4,
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ISCSI_PARAM_MAX_R2T = 5,
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ISCSI_PARAM_IMM_DATA_EN = 6,
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ISCSI_PARAM_FIRST_BURST = 7,
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ISCSI_PARAM_MAX_BURST = 8,
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ISCSI_PARAM_PDU_INORDER_EN = 9,
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ISCSI_PARAM_DATASEQ_INORDER_EN = 10,
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ISCSI_PARAM_ERL = 11,
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ISCSI_PARAM_IFMARKER_EN = 12,
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ISCSI_PARAM_OFMARKER_EN = 13,
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};
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#define ISCSI_PARAM_MAX 14
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typedef uint64_t iscsi_sessionh_t; /* iSCSI Data-Path session handle */
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typedef uint64_t iscsi_connh_t; /* iSCSI Data-Path connection handle */
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#define iscsi_ptr(_handle) ((void*)(unsigned long)_handle)
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#define iscsi_handle(_ptr) ((uint64_t)(unsigned long)_ptr)
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#define iscsi_hostdata(_hostdata) ((void*)_hostdata + sizeof(unsigned long))
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/*
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* These flags presents iSCSI Data-Path capabilities.
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*/
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#define CAP_RECOVERY_L0 0x1
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#define CAP_RECOVERY_L1 0x2
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#define CAP_RECOVERY_L2 0x4
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#define CAP_MULTI_R2T 0x8
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#define CAP_HDRDGST 0x10
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#define CAP_DATADGST 0x20
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#define CAP_MULTI_CONN 0x40
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#define CAP_TEXT_NEGO 0x80
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#define CAP_MARKERS 0x100
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/*
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* These flags describes reason of stop_conn() call
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*/
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#define STOP_CONN_TERM 0x1
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#define STOP_CONN_SUSPEND 0x2
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#define STOP_CONN_RECOVER 0x3
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#define ISCSI_STATS_CUSTOM_MAX 32
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#define ISCSI_STATS_CUSTOM_DESC_MAX 64
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struct iscsi_stats_custom {
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char desc[ISCSI_STATS_CUSTOM_DESC_MAX];
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uint64_t value;
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};
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/*
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* struct iscsi_stats - iSCSI Statistics (iSCSI MIB)
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*
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* Note: this structure contains counters collected on per-connection basis.
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*/
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struct iscsi_stats {
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/* octets */
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uint64_t txdata_octets;
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uint64_t rxdata_octets;
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/* xmit pdus */
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uint32_t noptx_pdus;
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uint32_t scsicmd_pdus;
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uint32_t tmfcmd_pdus;
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uint32_t login_pdus;
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uint32_t text_pdus;
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uint32_t dataout_pdus;
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uint32_t logout_pdus;
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uint32_t snack_pdus;
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/* recv pdus */
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uint32_t noprx_pdus;
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uint32_t scsirsp_pdus;
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uint32_t tmfrsp_pdus;
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uint32_t textrsp_pdus;
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uint32_t datain_pdus;
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uint32_t logoutrsp_pdus;
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uint32_t r2t_pdus;
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uint32_t async_pdus;
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uint32_t rjt_pdus;
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/* errors */
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uint32_t digest_err;
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uint32_t timeout_err;
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/*
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* iSCSI Custom Statistics support, i.e. Transport could
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* extend existing MIB statistics with its own specific statistics
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* up to ISCSI_STATS_CUSTOM_MAX
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*/
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uint32_t custom_length;
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struct iscsi_stats_custom custom[0]
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__attribute__ ((aligned (sizeof(uint64_t))));
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};
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#endif
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566
include/scsi/iscsi_proto.h
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566
include/scsi/iscsi_proto.h
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/*
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* RFC 3720 (iSCSI) protocol data types
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*
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* Copyright (C) 2005 Dmitry Yusupov
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* Copyright (C) 2005 Alex Aizman
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* maintained by open-iscsi@googlegroups.com
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published
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* by the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* See the file COPYING included with this distribution for more details.
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*/
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#ifndef ISCSI_PROTO_H
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#define ISCSI_PROTO_H
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#define ISCSI_VERSION_STR "0.3"
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#define ISCSI_DATE_STR "22-Apr-2005"
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#define ISCSI_DRAFT20_VERSION 0x00
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/* default iSCSI listen port for incoming connections */
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#define ISCSI_LISTEN_PORT 3260
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/* Padding word length */
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#define PAD_WORD_LEN 4
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/*
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* useful common(control and data pathes) macro
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*/
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#define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2]))
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#define hton24(p, v) { \
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p[0] = (((v) >> 16) & 0xFF); \
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p[1] = (((v) >> 8) & 0xFF); \
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p[2] = ((v) & 0xFF); \
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}
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#define zero_data(p) {p[0]=0;p[1]=0;p[2]=0;}
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/*
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* iSCSI Template Message Header
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*/
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struct iscsi_hdr {
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uint8_t opcode;
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uint8_t flags; /* Final bit */
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uint8_t rsvd2[2];
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uint8_t hlength; /* AHSs total length */
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uint8_t dlength[3]; /* Data length */
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uint8_t lun[8];
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__be32 itt; /* Initiator Task Tag */
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__be32 ttt; /* Target Task Tag */
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__be32 statsn;
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__be32 exp_statsn;
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uint8_t other[16];
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};
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/************************* RFC 3720 Begin *****************************/
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#define ISCSI_RESERVED_TAG 0xffffffff
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/* Opcode encoding bits */
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#define ISCSI_OP_RETRY 0x80
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#define ISCSI_OP_IMMEDIATE 0x40
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#define ISCSI_OPCODE_MASK 0x3F
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/* Initiator Opcode values */
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#define ISCSI_OP_NOOP_OUT 0x00
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#define ISCSI_OP_SCSI_CMD 0x01
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#define ISCSI_OP_SCSI_TMFUNC 0x02
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#define ISCSI_OP_LOGIN 0x03
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#define ISCSI_OP_TEXT 0x04
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#define ISCSI_OP_SCSI_DATA_OUT 0x05
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#define ISCSI_OP_LOGOUT 0x06
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#define ISCSI_OP_SNACK 0x10
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/* Target Opcode values */
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#define ISCSI_OP_NOOP_IN 0x20
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#define ISCSI_OP_SCSI_CMD_RSP 0x21
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#define ISCSI_OP_SCSI_TMFUNC_RSP 0x22
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#define ISCSI_OP_LOGIN_RSP 0x23
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#define ISCSI_OP_TEXT_RSP 0x24
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#define ISCSI_OP_SCSI_DATA_IN 0x25
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#define ISCSI_OP_LOGOUT_RSP 0x26
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#define ISCSI_OP_R2T 0x31
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#define ISCSI_OP_ASYNC_EVENT 0x32
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#define ISCSI_OP_REJECT 0x3f
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/* iSCSI PDU Header */
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struct iscsi_cmd {
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uint8_t opcode;
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uint8_t flags;
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uint8_t rsvd2;
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uint8_t cmdrn;
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uint8_t hlength;
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uint8_t dlength[3];
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uint8_t lun[8];
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__be32 itt; /* Initiator Task Tag */
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__be32 data_length;
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__be32 cmdsn;
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__be32 exp_statsn;
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uint8_t cdb[16]; /* SCSI Command Block */
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/* Additional Data (Command Dependent) */
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};
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/* Command PDU flags */
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#define ISCSI_FLAG_CMD_FINAL 0x80
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#define ISCSI_FLAG_CMD_READ 0x40
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#define ISCSI_FLAG_CMD_WRITE 0x20
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#define ISCSI_FLAG_CMD_ATTR_MASK 0x07 /* 3 bits */
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/* SCSI Command Attribute values */
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#define ISCSI_ATTR_UNTAGGED 0
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#define ISCSI_ATTR_SIMPLE 1
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#define ISCSI_ATTR_ORDERED 2
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#define ISCSI_ATTR_HEAD_OF_QUEUE 3
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#define ISCSI_ATTR_ACA 4
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/* SCSI Response Header */
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struct iscsi_cmd_rsp {
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uint8_t opcode;
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uint8_t flags;
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uint8_t response;
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uint8_t cmd_status;
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uint8_t hlength;
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uint8_t dlength[3];
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uint8_t rsvd[8];
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__be32 itt; /* Initiator Task Tag */
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__be32 rsvd1;
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__be32 statsn;
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__be32 exp_cmdsn;
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__be32 max_cmdsn;
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__be32 exp_datasn;
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__be32 bi_residual_count;
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__be32 residual_count;
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/* Response or Sense Data (optional) */
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};
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/* Command Response PDU flags */
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#define ISCSI_FLAG_CMD_BIDI_OVERFLOW 0x10
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#define ISCSI_FLAG_CMD_BIDI_UNDERFLOW 0x08
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#define ISCSI_FLAG_CMD_OVERFLOW 0x04
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#define ISCSI_FLAG_CMD_UNDERFLOW 0x02
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/* iSCSI Status values. Valid if Rsp Selector bit is not set */
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#define ISCSI_STATUS_CMD_COMPLETED 0
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#define ISCSI_STATUS_TARGET_FAILURE 1
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#define ISCSI_STATUS_SUBSYS_FAILURE 2
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/* Asynchronous Event Header */
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struct iscsi_async {
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uint8_t opcode;
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uint8_t flags;
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uint8_t rsvd2[2];
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uint8_t rsvd3;
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uint8_t dlength[3];
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uint8_t lun[8];
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uint8_t rsvd4[8];
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__be32 statsn;
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__be32 exp_cmdsn;
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__be32 max_cmdsn;
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uint8_t async_event;
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uint8_t async_vcode;
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__be16 param1;
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__be16 param2;
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__be16 param3;
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uint8_t rsvd5[4];
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};
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/* iSCSI Event Codes */
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#define ISCSI_ASYNC_MSG_SCSI_EVENT 0
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#define ISCSI_ASYNC_MSG_REQUEST_LOGOUT 1
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#define ISCSI_ASYNC_MSG_DROPPING_CONNECTION 2
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#define ISCSI_ASYNC_MSG_DROPPING_ALL_CONNECTIONS 3
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#define ISCSI_ASYNC_MSG_PARAM_NEGOTIATION 4
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#define ISCSI_ASYNC_MSG_VENDOR_SPECIFIC 255
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/* NOP-Out Message */
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struct iscsi_nopout {
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uint8_t opcode;
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uint8_t flags;
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__be16 rsvd2;
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uint8_t rsvd3;
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||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 ttt; /* Target Transfer Tag */
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd4[16];
|
||||
};
|
||||
|
||||
/* NOP-In Message */
|
||||
struct iscsi_nopin {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
__be16 rsvd2;
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 ttt; /* Target Transfer Tag */
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t rsvd4[12];
|
||||
};
|
||||
|
||||
/* SCSI Task Management Message Header */
|
||||
struct iscsi_tm {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd1[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rtt; /* Reference Task Tag */
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
__be32 refcmdsn;
|
||||
__be32 exp_datasn;
|
||||
uint8_t rsvd2[8];
|
||||
};
|
||||
|
||||
#define ISCSI_FLAG_TASK_MGMT_FUNCTION_MASK 0x7F
|
||||
|
||||
/* Function values */
|
||||
#define ISCSI_TM_FUNC_ABORT_TASK 1
|
||||
#define ISCSI_TM_FUNC_ABORT_TASK_SET 2
|
||||
#define ISCSI_TM_FUNC_CLEAR_ACA 3
|
||||
#define ISCSI_TM_FUNC_CLEAR_TASK_SET 4
|
||||
#define ISCSI_TM_FUNC_LOGICAL_UNIT_RESET 5
|
||||
#define ISCSI_TM_FUNC_TARGET_WARM_RESET 6
|
||||
#define ISCSI_TM_FUNC_TARGET_COLD_RESET 7
|
||||
#define ISCSI_TM_FUNC_TASK_REASSIGN 8
|
||||
|
||||
/* SCSI Task Management Response Header */
|
||||
struct iscsi_tm_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t response; /* see Response values below */
|
||||
uint8_t qualifier;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd2[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rtt; /* Reference Task Tag */
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t rsvd3[12];
|
||||
};
|
||||
|
||||
/* Response values */
|
||||
#define SCSI_TCP_TM_RESP_COMPLETE 0x00
|
||||
#define SCSI_TCP_TM_RESP_NO_TASK 0x01
|
||||
#define SCSI_TCP_TM_RESP_NO_LUN 0x02
|
||||
#define SCSI_TCP_TM_RESP_TASK_ALLEGIANT 0x03
|
||||
#define SCSI_TCP_TM_RESP_NO_FAILOVER 0x04
|
||||
#define SCSI_TCP_TM_RESP_NOT_SUPPORTED 0x05
|
||||
#define SCSI_TCP_TM_RESP_AUTH_FAILED 0x06
|
||||
#define SCSI_TCP_TM_RESP_REJECTED 0xff
|
||||
|
||||
/* Ready To Transfer Header */
|
||||
struct iscsi_r2t_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 ttt; /* Target Transfer Tag */
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 r2tsn;
|
||||
__be32 data_offset;
|
||||
__be32 data_length;
|
||||
};
|
||||
|
||||
/* SCSI Data Hdr */
|
||||
struct iscsi_data {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 rsvd4;
|
||||
__be32 exp_statsn;
|
||||
__be32 rsvd5;
|
||||
__be32 datasn;
|
||||
__be32 offset;
|
||||
__be32 rsvd6;
|
||||
/* Payload */
|
||||
};
|
||||
|
||||
/* SCSI Data Response Hdr */
|
||||
struct iscsi_data_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2;
|
||||
uint8_t cmd_status;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t lun[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 datasn;
|
||||
__be32 offset;
|
||||
__be32 residual_count;
|
||||
};
|
||||
|
||||
/* Data Response PDU flags */
|
||||
#define ISCSI_FLAG_DATA_ACK 0x40
|
||||
#define ISCSI_FLAG_DATA_OVERFLOW 0x04
|
||||
#define ISCSI_FLAG_DATA_UNDERFLOW 0x02
|
||||
#define ISCSI_FLAG_DATA_STATUS 0x01
|
||||
|
||||
/* Text Header */
|
||||
struct iscsi_text {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd4[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd5[16];
|
||||
/* Text - key=value pairs */
|
||||
};
|
||||
|
||||
#define ISCSI_FLAG_TEXT_CONTINUE 0x40
|
||||
|
||||
/* Text Response Header */
|
||||
struct iscsi_text_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd4[8];
|
||||
__be32 itt;
|
||||
__be32 ttt;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t rsvd5[12];
|
||||
/* Text Response - key:value pairs */
|
||||
};
|
||||
|
||||
/* Login Header */
|
||||
struct iscsi_login {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t max_version; /* Max. version supported */
|
||||
uint8_t min_version; /* Min. version supported */
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t isid[6]; /* Initiator Session ID */
|
||||
__be16 tsih; /* Target Session Handle */
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be16 cid;
|
||||
__be16 rsvd3;
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd5[16];
|
||||
};
|
||||
|
||||
/* Login PDU flags */
|
||||
#define ISCSI_FLAG_LOGIN_TRANSIT 0x80
|
||||
#define ISCSI_FLAG_LOGIN_CONTINUE 0x40
|
||||
#define ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK 0x0C /* 2 bits */
|
||||
#define ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK 0x03 /* 2 bits */
|
||||
|
||||
#define ISCSI_LOGIN_CURRENT_STAGE(flags) \
|
||||
((flags & ISCSI_FLAG_LOGIN_CURRENT_STAGE_MASK) >> 2)
|
||||
#define ISCSI_LOGIN_NEXT_STAGE(flags) \
|
||||
(flags & ISCSI_FLAG_LOGIN_NEXT_STAGE_MASK)
|
||||
|
||||
/* Login Response Header */
|
||||
struct iscsi_login_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t max_version; /* Max. version supported */
|
||||
uint8_t active_version; /* Active version */
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t isid[6]; /* Initiator Session ID */
|
||||
__be16 tsih; /* Target Session Handle */
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rsvd3;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
uint8_t status_class; /* see Login RSP ststus classes below */
|
||||
uint8_t status_detail; /* see Login RSP Status details below */
|
||||
uint8_t rsvd4[10];
|
||||
};
|
||||
|
||||
/* Login stage (phase) codes for CSG, NSG */
|
||||
#define ISCSI_INITIAL_LOGIN_STAGE -1
|
||||
#define ISCSI_SECURITY_NEGOTIATION_STAGE 0
|
||||
#define ISCSI_OP_PARMS_NEGOTIATION_STAGE 1
|
||||
#define ISCSI_FULL_FEATURE_PHASE 3
|
||||
|
||||
/* Login Status response classes */
|
||||
#define ISCSI_STATUS_CLS_SUCCESS 0x00
|
||||
#define ISCSI_STATUS_CLS_REDIRECT 0x01
|
||||
#define ISCSI_STATUS_CLS_INITIATOR_ERR 0x02
|
||||
#define ISCSI_STATUS_CLS_TARGET_ERR 0x03
|
||||
|
||||
/* Login Status response detail codes */
|
||||
/* Class-0 (Success) */
|
||||
#define ISCSI_LOGIN_STATUS_ACCEPT 0x00
|
||||
|
||||
/* Class-1 (Redirection) */
|
||||
#define ISCSI_LOGIN_STATUS_TGT_MOVED_TEMP 0x01
|
||||
#define ISCSI_LOGIN_STATUS_TGT_MOVED_PERM 0x02
|
||||
|
||||
/* Class-2 (Initiator Error) */
|
||||
#define ISCSI_LOGIN_STATUS_INIT_ERR 0x00
|
||||
#define ISCSI_LOGIN_STATUS_AUTH_FAILED 0x01
|
||||
#define ISCSI_LOGIN_STATUS_TGT_FORBIDDEN 0x02
|
||||
#define ISCSI_LOGIN_STATUS_TGT_NOT_FOUND 0x03
|
||||
#define ISCSI_LOGIN_STATUS_TGT_REMOVED 0x04
|
||||
#define ISCSI_LOGIN_STATUS_NO_VERSION 0x05
|
||||
#define ISCSI_LOGIN_STATUS_ISID_ERROR 0x06
|
||||
#define ISCSI_LOGIN_STATUS_MISSING_FIELDS 0x07
|
||||
#define ISCSI_LOGIN_STATUS_CONN_ADD_FAILED 0x08
|
||||
#define ISCSI_LOGIN_STATUS_NO_SESSION_TYPE 0x09
|
||||
#define ISCSI_LOGIN_STATUS_NO_SESSION 0x0a
|
||||
#define ISCSI_LOGIN_STATUS_INVALID_REQUEST 0x0b
|
||||
|
||||
/* Class-3 (Target Error) */
|
||||
#define ISCSI_LOGIN_STATUS_TARGET_ERROR 0x00
|
||||
#define ISCSI_LOGIN_STATUS_SVC_UNAVAILABLE 0x01
|
||||
#define ISCSI_LOGIN_STATUS_NO_RESOURCES 0x02
|
||||
|
||||
/* Logout Header */
|
||||
struct iscsi_logout {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd1[2];
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd2[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be16 cid;
|
||||
uint8_t rsvd3[2];
|
||||
__be32 cmdsn;
|
||||
__be32 exp_statsn;
|
||||
uint8_t rsvd4[16];
|
||||
};
|
||||
|
||||
/* Logout PDU flags */
|
||||
#define ISCSI_FLAG_LOGOUT_REASON_MASK 0x7F
|
||||
|
||||
/* logout reason_code values */
|
||||
|
||||
#define ISCSI_LOGOUT_REASON_CLOSE_SESSION 0
|
||||
#define ISCSI_LOGOUT_REASON_CLOSE_CONNECTION 1
|
||||
#define ISCSI_LOGOUT_REASON_RECOVERY 2
|
||||
#define ISCSI_LOGOUT_REASON_AEN_REQUEST 3
|
||||
|
||||
/* Logout Response Header */
|
||||
struct iscsi_logout_rsp {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t response; /* see Logout response values below */
|
||||
uint8_t rsvd2;
|
||||
uint8_t hlength;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd3[8];
|
||||
__be32 itt; /* Initiator Task Tag */
|
||||
__be32 rsvd4;
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 rsvd5;
|
||||
__be16 t2wait;
|
||||
__be16 t2retain;
|
||||
__be32 rsvd6;
|
||||
};
|
||||
|
||||
/* logout response status values */
|
||||
|
||||
#define ISCSI_LOGOUT_SUCCESS 0
|
||||
#define ISCSI_LOGOUT_CID_NOT_FOUND 1
|
||||
#define ISCSI_LOGOUT_RECOVERY_UNSUPPORTED 2
|
||||
#define ISCSI_LOGOUT_CLEANUP_FAILED 3
|
||||
|
||||
/* SNACK Header */
|
||||
struct iscsi_snack {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t rsvd2[14];
|
||||
__be32 itt;
|
||||
__be32 begrun;
|
||||
__be32 runlength;
|
||||
__be32 exp_statsn;
|
||||
__be32 rsvd3;
|
||||
__be32 exp_datasn;
|
||||
uint8_t rsvd6[8];
|
||||
};
|
||||
|
||||
/* SNACK PDU flags */
|
||||
#define ISCSI_FLAG_SNACK_TYPE_MASK 0x0F /* 4 bits */
|
||||
|
||||
/* Reject Message Header */
|
||||
struct iscsi_reject {
|
||||
uint8_t opcode;
|
||||
uint8_t flags;
|
||||
uint8_t reason;
|
||||
uint8_t rsvd2;
|
||||
uint8_t rsvd3;
|
||||
uint8_t dlength[3];
|
||||
uint8_t rsvd4[16];
|
||||
__be32 statsn;
|
||||
__be32 exp_cmdsn;
|
||||
__be32 max_cmdsn;
|
||||
__be32 datasn;
|
||||
uint8_t rsvd5[8];
|
||||
/* Text - Rejected hdr */
|
||||
};
|
||||
|
||||
/* Reason for Reject */
|
||||
#define CMD_BEFORE_LOGIN 1
|
||||
#define DATA_DIGEST_ERROR 2
|
||||
#define DATA_SNACK_REJECT 3
|
||||
#define ISCSI_PROTOCOL_ERROR 4
|
||||
#define CMD_NOT_SUPPORTED 5
|
||||
#define IMM_CMD_REJECT 6
|
||||
#define TASK_IN_PROGRESS 7
|
||||
#define INVALID_SNACK 8
|
||||
#define BOOKMARK_REJECTED 9
|
||||
#define BOOKMARK_NO_RESOURCES 10
|
||||
#define NEGOTIATION_RESET 11
|
||||
|
||||
/* Max. number of Key=Value pairs in a text message */
|
||||
#define MAX_KEY_VALUE_PAIRS 8192
|
||||
|
||||
/* maximum length for text keys/values */
|
||||
#define KEY_MAXLEN 64
|
||||
#define VALUE_MAXLEN 255
|
||||
#define TARGET_NAME_MAXLEN VALUE_MAXLEN
|
||||
|
||||
#define DEFAULT_MAX_RECV_DATA_SEGMENT_LENGTH 8192
|
||||
|
||||
/************************* RFC 3720 End *****************************/
|
||||
|
||||
#endif /* ISCSI_PROTO_H */
|
||||
|
|
@ -1,8 +1,10 @@
|
|||
/*
|
||||
/*
|
||||
* iSCSI transport class definitions
|
||||
*
|
||||
* Copyright (C) IBM Corporation, 2004
|
||||
* Copyright (C) Mike Christie, 2004
|
||||
* Copyright (C) Mike Christie, 2004 - 2005
|
||||
* Copyright (C) Dmitry Yusupov, 2004 - 2005
|
||||
* Copyright (C) Alex Aizman, 2004 - 2005
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
|
|
@ -21,158 +23,64 @@
|
|||
#ifndef SCSI_TRANSPORT_ISCSI_H
|
||||
#define SCSI_TRANSPORT_ISCSI_H
|
||||
|
||||
#include <linux/config.h>
|
||||
#include <linux/in6.h>
|
||||
#include <linux/in.h>
|
||||
#include <scsi/iscsi_if.h>
|
||||
|
||||
struct scsi_transport_template;
|
||||
|
||||
struct iscsi_class_session {
|
||||
uint8_t isid[6];
|
||||
uint16_t tsih;
|
||||
int header_digest; /* 1 CRC32, 0 None */
|
||||
int data_digest; /* 1 CRC32, 0 None */
|
||||
uint16_t tpgt;
|
||||
union {
|
||||
struct in6_addr sin6_addr;
|
||||
struct in_addr sin_addr;
|
||||
} u;
|
||||
sa_family_t addr_type; /* must be AF_INET or AF_INET6 */
|
||||
uint16_t port; /* must be in network byte order */
|
||||
int initial_r2t; /* 1 Yes, 0 No */
|
||||
int immediate_data; /* 1 Yes, 0 No */
|
||||
uint32_t max_recv_data_segment_len;
|
||||
uint32_t max_burst_len;
|
||||
uint32_t first_burst_len;
|
||||
uint16_t def_time2wait;
|
||||
uint16_t def_time2retain;
|
||||
uint16_t max_outstanding_r2t;
|
||||
int data_pdu_in_order; /* 1 Yes, 0 No */
|
||||
int data_sequence_in_order; /* 1 Yes, 0 No */
|
||||
int erl;
|
||||
/**
|
||||
* struct iscsi_transport - iSCSI Transport template
|
||||
*
|
||||
* @name: transport name
|
||||
* @caps: iSCSI Data-Path capabilities
|
||||
* @create_session: create new iSCSI session object
|
||||
* @destroy_session: destroy existing iSCSI session object
|
||||
* @create_conn: create new iSCSI connection
|
||||
* @bind_conn: associate this connection with existing iSCSI session
|
||||
* and specified transport descriptor
|
||||
* @destroy_conn: destroy inactive iSCSI connection
|
||||
* @set_param: set iSCSI Data-Path operational parameter
|
||||
* @start_conn: set connection to be operational
|
||||
* @stop_conn: suspend/recover/terminate connection
|
||||
* @send_pdu: send iSCSI PDU, Login, Logout, NOP-Out, Reject, Text.
|
||||
*
|
||||
* Template API provided by iSCSI Transport
|
||||
*/
|
||||
struct iscsi_transport {
|
||||
struct module *owner;
|
||||
char *name;
|
||||
unsigned int caps;
|
||||
struct scsi_host_template *host_template;
|
||||
int hostdata_size;
|
||||
int max_lun;
|
||||
unsigned int max_conn;
|
||||
unsigned int max_cmd_len;
|
||||
iscsi_sessionh_t (*create_session) (uint32_t initial_cmdsn,
|
||||
struct Scsi_Host *shost);
|
||||
void (*destroy_session) (iscsi_sessionh_t session);
|
||||
iscsi_connh_t (*create_conn) (iscsi_sessionh_t session, uint32_t cid);
|
||||
int (*bind_conn) (iscsi_sessionh_t session, iscsi_connh_t conn,
|
||||
uint32_t transport_fd, int is_leading);
|
||||
int (*start_conn) (iscsi_connh_t conn);
|
||||
void (*stop_conn) (iscsi_connh_t conn, int flag);
|
||||
void (*destroy_conn) (iscsi_connh_t conn);
|
||||
int (*set_param) (iscsi_connh_t conn, enum iscsi_param param,
|
||||
uint32_t value);
|
||||
int (*get_param) (iscsi_connh_t conn, enum iscsi_param param,
|
||||
uint32_t *value);
|
||||
int (*send_pdu) (iscsi_connh_t conn, struct iscsi_hdr *hdr,
|
||||
char *data, uint32_t data_size);
|
||||
void (*get_stats) (iscsi_connh_t conn, struct iscsi_stats *stats);
|
||||
};
|
||||
|
||||
/*
|
||||
* accessor macros
|
||||
* transport registration upcalls
|
||||
*/
|
||||
#define iscsi_isid(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->isid)
|
||||
#define iscsi_tsih(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->tsih)
|
||||
#define iscsi_header_digest(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->header_digest)
|
||||
#define iscsi_data_digest(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->data_digest)
|
||||
#define iscsi_port(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->port)
|
||||
#define iscsi_addr_type(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->addr_type)
|
||||
#define iscsi_sin_addr(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->u.sin_addr)
|
||||
#define iscsi_sin6_addr(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->u.sin6_addr)
|
||||
#define iscsi_tpgt(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->tpgt)
|
||||
#define iscsi_initial_r2t(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->initial_r2t)
|
||||
#define iscsi_immediate_data(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->immediate_data)
|
||||
#define iscsi_max_recv_data_segment_len(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->max_recv_data_segment_len)
|
||||
#define iscsi_max_burst_len(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->max_burst_len)
|
||||
#define iscsi_first_burst_len(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->first_burst_len)
|
||||
#define iscsi_def_time2wait(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->def_time2wait)
|
||||
#define iscsi_def_time2retain(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->def_time2retain)
|
||||
#define iscsi_max_outstanding_r2t(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->max_outstanding_r2t)
|
||||
#define iscsi_data_pdu_in_order(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->data_pdu_in_order)
|
||||
#define iscsi_data_sequence_in_order(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->data_sequence_in_order)
|
||||
#define iscsi_erl(x) \
|
||||
(((struct iscsi_class_session *)&(x)->starget_data)->erl)
|
||||
extern int iscsi_register_transport(struct iscsi_transport *tt);
|
||||
extern int iscsi_unregister_transport(struct iscsi_transport *tt);
|
||||
|
||||
/*
|
||||
* The functions by which the transport class and the driver communicate
|
||||
* control plane upcalls
|
||||
*/
|
||||
struct iscsi_function_template {
|
||||
/*
|
||||
* target attrs
|
||||
*/
|
||||
void (*get_isid)(struct scsi_target *);
|
||||
void (*get_tsih)(struct scsi_target *);
|
||||
void (*get_header_digest)(struct scsi_target *);
|
||||
void (*get_data_digest)(struct scsi_target *);
|
||||
void (*get_port)(struct scsi_target *);
|
||||
void (*get_tpgt)(struct scsi_target *);
|
||||
/*
|
||||
* In get_ip_address the lld must set the address and
|
||||
* the address type
|
||||
*/
|
||||
void (*get_ip_address)(struct scsi_target *);
|
||||
/*
|
||||
* The lld should snprintf the name or alias to the buffer
|
||||
*/
|
||||
ssize_t (*get_target_name)(struct scsi_target *, char *, ssize_t);
|
||||
ssize_t (*get_target_alias)(struct scsi_target *, char *, ssize_t);
|
||||
void (*get_initial_r2t)(struct scsi_target *);
|
||||
void (*get_immediate_data)(struct scsi_target *);
|
||||
void (*get_max_recv_data_segment_len)(struct scsi_target *);
|
||||
void (*get_max_burst_len)(struct scsi_target *);
|
||||
void (*get_first_burst_len)(struct scsi_target *);
|
||||
void (*get_def_time2wait)(struct scsi_target *);
|
||||
void (*get_def_time2retain)(struct scsi_target *);
|
||||
void (*get_max_outstanding_r2t)(struct scsi_target *);
|
||||
void (*get_data_pdu_in_order)(struct scsi_target *);
|
||||
void (*get_data_sequence_in_order)(struct scsi_target *);
|
||||
void (*get_erl)(struct scsi_target *);
|
||||
|
||||
/*
|
||||
* host atts
|
||||
*/
|
||||
|
||||
/*
|
||||
* The lld should snprintf the name or alias to the buffer
|
||||
*/
|
||||
ssize_t (*get_initiator_alias)(struct Scsi_Host *, char *, ssize_t);
|
||||
ssize_t (*get_initiator_name)(struct Scsi_Host *, char *, ssize_t);
|
||||
/*
|
||||
* The driver sets these to tell the transport class it
|
||||
* wants the attributes displayed in sysfs. If the show_ flag
|
||||
* is not set, the attribute will be private to the transport
|
||||
* class. We could probably just test if a get_ fn was set
|
||||
* since we only use the values for sysfs but this is how
|
||||
* fc does it too.
|
||||
*/
|
||||
unsigned long show_isid:1;
|
||||
unsigned long show_tsih:1;
|
||||
unsigned long show_header_digest:1;
|
||||
unsigned long show_data_digest:1;
|
||||
unsigned long show_port:1;
|
||||
unsigned long show_tpgt:1;
|
||||
unsigned long show_ip_address:1;
|
||||
unsigned long show_target_name:1;
|
||||
unsigned long show_target_alias:1;
|
||||
unsigned long show_initial_r2t:1;
|
||||
unsigned long show_immediate_data:1;
|
||||
unsigned long show_max_recv_data_segment_len:1;
|
||||
unsigned long show_max_burst_len:1;
|
||||
unsigned long show_first_burst_len:1;
|
||||
unsigned long show_def_time2wait:1;
|
||||
unsigned long show_def_time2retain:1;
|
||||
unsigned long show_max_outstanding_r2t:1;
|
||||
unsigned long show_data_pdu_in_order:1;
|
||||
unsigned long show_data_sequence_in_order:1;
|
||||
unsigned long show_erl:1;
|
||||
unsigned long show_initiator_name:1;
|
||||
unsigned long show_initiator_alias:1;
|
||||
};
|
||||
|
||||
struct scsi_transport_template *iscsi_attach_transport(struct iscsi_function_template *);
|
||||
void iscsi_release_transport(struct scsi_transport_template *);
|
||||
extern void iscsi_conn_error(iscsi_connh_t conn, enum iscsi_err error);
|
||||
extern int iscsi_recv_pdu(iscsi_connh_t conn, struct iscsi_hdr *hdr,
|
||||
char *data, uint32_t data_size);
|
||||
|
||||
#endif
|
||||
|
|
|
|||
Loading…
Reference in a new issue