1eba9812f2
Including tgt_node.h in iscsi.h will prevent us from including iscsi.h in tgt_node.h. Subsequent patches will require tgt_node.h to refer the macro constants in iscsi.h. Hence - remove inclusion of tgt_node.h from iscsi.h, - add inclusion of spdk/scsi.h to iscsi.h, and - remove inclusion of spdk/scsi.h from tgt_node.h Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Change-Id: I5ac808a83754c157e4140bcd2a83c4d210e30d91 Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/459704 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Darek Stojaczyk <dariusz.stojaczyk@intel.com>
462 lines
14 KiB
C
462 lines
14 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef SPDK_ISCSI_H
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#define SPDK_ISCSI_H
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#include "spdk/stdinc.h"
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#include "spdk/bdev.h"
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#include "spdk/iscsi_spec.h"
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#include "spdk/event.h"
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#include "spdk/thread.h"
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#include "spdk/scsi.h"
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#include "iscsi/param.h"
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#include "spdk/assert.h"
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#include "spdk/dif.h"
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#include "spdk/util.h"
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#define SPDK_ISCSI_DEFAULT_NODEBASE "iqn.2016-06.io.spdk"
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#define DEFAULT_MAXR2T 4
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#define MAX_INITIATOR_PORT_NAME 256
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#define MAX_INITIATOR_NAME 223
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#define MAX_TARGET_NAME 223
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#define MAX_PORTAL 1024
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#define MAX_INITIATOR 256
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#define MAX_NETMASK 256
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#define MAX_ISCSI_CONNECTIONS 1024
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#define DEFAULT_PORT 3260
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#define DEFAULT_MAX_SESSIONS 128
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#define DEFAULT_MAX_CONNECTIONS_PER_SESSION 2
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#define DEFAULT_MAXOUTSTANDINGR2T 1
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#define DEFAULT_DEFAULTTIME2WAIT 2
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#define DEFAULT_DEFAULTTIME2RETAIN 20
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#define DEFAULT_INITIALR2T true
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#define DEFAULT_IMMEDIATEDATA true
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#define DEFAULT_DATAPDUINORDER true
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#define DEFAULT_DATASEQUENCEINORDER true
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#define DEFAULT_ERRORRECOVERYLEVEL 0
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#define DEFAULT_TIMEOUT 60
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#define MAX_NOPININTERVAL 60
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#define DEFAULT_NOPININTERVAL 30
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/*
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* SPDK iSCSI target currently only supports 64KB as the maximum data segment length
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* it can receive from initiators. Other values may work, but no guarantees.
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*/
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#define SPDK_ISCSI_MAX_RECV_DATA_SEGMENT_LENGTH 65536
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/*
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* Defines maximum number of data out buffers each connection can have in
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* use at any given time.
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*/
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#define MAX_DATA_OUT_PER_CONNECTION 16
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/*
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* Defines maximum number of data in buffers each connection can have in
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* use at any given time. So this limit does not affect I/O smaller than
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* SPDK_BDEV_SMALL_BUF_MAX_SIZE.
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*/
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#define MAX_LARGE_DATAIN_PER_CONNECTION 64
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#define SPDK_ISCSI_MAX_BURST_LENGTH \
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(SPDK_ISCSI_MAX_RECV_DATA_SEGMENT_LENGTH * MAX_DATA_OUT_PER_CONNECTION)
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/*
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* Defines default maximum amount in bytes of unsolicited data the iSCSI
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* initiator may send to the SPDK iSCSI target during the execution of
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* a single SCSI command. And it is smaller than the MaxBurstLength.
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*/
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#define SPDK_ISCSI_FIRST_BURST_LENGTH 8192
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/*
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* Defines minimum amount in bytes of unsolicited data the iSCSI initiator
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* may send to the SPDK iSCSI target during the execution of a single
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* SCSI command.
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*/
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#define SPDK_ISCSI_MIN_FIRST_BURST_LENGTH 512
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#define SPDK_ISCSI_MAX_FIRST_BURST_LENGTH 16777215
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/*
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* Defines default maximum queue depth per connection and this can be
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* changed by configuration file.
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*/
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#define DEFAULT_MAX_QUEUE_DEPTH 64
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/** Defines how long we should wait for a TCP close after responding to a
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* logout request, before terminating the connection ourselves.
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*/
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#define ISCSI_LOGOUT_TIMEOUT 5 /* in seconds */
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/* according to RFC1982 */
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#define SN32_CMPMAX (((uint32_t)1U) << (32 - 1))
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#define SN32_LT(S1,S2) \
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(((uint32_t)(S1) != (uint32_t)(S2)) \
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&& (((uint32_t)(S1) < (uint32_t)(S2) \
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&& ((uint32_t)(S2) - (uint32_t)(S1) < SN32_CMPMAX)) \
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|| ((uint32_t)(S1) > (uint32_t)(S2) \
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&& ((uint32_t)(S1) - (uint32_t)(S2) > SN32_CMPMAX))))
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#define SN32_GT(S1,S2) \
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(((uint32_t)(S1) != (uint32_t)(S2)) \
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&& (((uint32_t)(S1) < (uint32_t)(S2) \
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&& ((uint32_t)(S2) - (uint32_t)(S1) > SN32_CMPMAX)) \
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|| ((uint32_t)(S1) > (uint32_t)(S2) \
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&& ((uint32_t)(S1) - (uint32_t)(S2) < SN32_CMPMAX))))
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/* For spdk_iscsi_login_in related function use, we need to avoid the conflict
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* with other errors
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* */
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#define SPDK_ISCSI_LOGIN_ERROR_RESPONSE -1000
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#define SPDK_ISCSI_LOGIN_ERROR_PARAMETER -1001
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#define SPDK_ISCSI_PARAMETER_EXCHANGE_NOT_ONCE -1002
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#define ISCSI_AHS_LEN 60
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struct spdk_mobj {
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struct spdk_mempool *mp;
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void *buf;
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};
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struct spdk_iscsi_pdu {
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struct iscsi_bhs bhs;
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struct spdk_mobj *mobj;
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uint8_t *data_buf;
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uint8_t *data;
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uint8_t header_digest[ISCSI_DIGEST_LEN];
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uint8_t data_digest[ISCSI_DIGEST_LEN];
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size_t data_segment_len;
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int bhs_valid_bytes;
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int ahs_valid_bytes;
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int data_valid_bytes;
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int hdigest_valid_bytes;
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int ddigest_valid_bytes;
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int ref;
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bool data_from_mempool; /* indicate whether the data buffer is allocated from mempool */
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struct spdk_iscsi_task *task; /* data tied to a task buffer */
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uint32_t cmd_sn;
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uint32_t writev_offset;
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uint32_t data_buf_len;
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bool dif_insert_or_strip;
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struct spdk_dif_ctx dif_ctx;
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TAILQ_ENTRY(spdk_iscsi_pdu) tailq;
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/*
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* 60 bytes of AHS should suffice for now.
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* This should always be at the end of PDU data structure.
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* we need to not zero this out when doing memory clear.
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*/
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uint8_t ahs[ISCSI_AHS_LEN];
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struct {
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uint16_t length; /* iSCSI SenseLength (big-endian) */
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uint8_t data[32];
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} sense;
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};
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enum iscsi_connection_state {
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ISCSI_CONN_STATE_INVALID = 0,
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ISCSI_CONN_STATE_RUNNING = 1,
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ISCSI_CONN_STATE_LOGGED_OUT = 2,
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ISCSI_CONN_STATE_EXITING = 3,
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ISCSI_CONN_STATE_EXITED = 4,
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};
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enum iscsi_chap_phase {
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ISCSI_CHAP_PHASE_NONE = 0,
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ISCSI_CHAP_PHASE_WAIT_A = 1,
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ISCSI_CHAP_PHASE_WAIT_NR = 2,
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ISCSI_CHAP_PHASE_END = 3,
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};
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enum session_type {
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SESSION_TYPE_INVALID = 0,
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SESSION_TYPE_NORMAL = 1,
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SESSION_TYPE_DISCOVERY = 2,
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};
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#define ISCSI_CHAP_CHALLENGE_LEN 1024
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#define ISCSI_CHAP_MAX_USER_LEN 255
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#define ISCSI_CHAP_MAX_SECRET_LEN 255
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struct iscsi_chap_auth {
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enum iscsi_chap_phase chap_phase;
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char user[ISCSI_CHAP_MAX_USER_LEN + 1];
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char secret[ISCSI_CHAP_MAX_SECRET_LEN + 1];
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char muser[ISCSI_CHAP_MAX_USER_LEN + 1];
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char msecret[ISCSI_CHAP_MAX_SECRET_LEN + 1];
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uint8_t chap_id[1];
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uint8_t chap_mid[1];
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int chap_challenge_len;
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uint8_t chap_challenge[ISCSI_CHAP_CHALLENGE_LEN];
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int chap_mchallenge_len;
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uint8_t chap_mchallenge[ISCSI_CHAP_CHALLENGE_LEN];
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};
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struct spdk_iscsi_auth_secret {
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char user[ISCSI_CHAP_MAX_USER_LEN + 1];
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char secret[ISCSI_CHAP_MAX_SECRET_LEN + 1];
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char muser[ISCSI_CHAP_MAX_USER_LEN + 1];
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char msecret[ISCSI_CHAP_MAX_SECRET_LEN + 1];
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TAILQ_ENTRY(spdk_iscsi_auth_secret) tailq;
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};
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struct spdk_iscsi_auth_group {
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int32_t tag;
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TAILQ_HEAD(, spdk_iscsi_auth_secret) secret_head;
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TAILQ_ENTRY(spdk_iscsi_auth_group) tailq;
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};
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struct spdk_iscsi_sess {
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uint32_t connections;
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struct spdk_iscsi_conn **conns;
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struct spdk_scsi_port *initiator_port;
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int tag;
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uint64_t isid;
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uint16_t tsih;
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struct spdk_iscsi_tgt_node *target;
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int queue_depth;
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struct iscsi_param *params;
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enum session_type session_type;
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uint32_t MaxConnections;
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uint32_t MaxOutstandingR2T;
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uint32_t DefaultTime2Wait;
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uint32_t DefaultTime2Retain;
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uint32_t FirstBurstLength;
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uint32_t MaxBurstLength;
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bool InitialR2T;
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bool ImmediateData;
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bool DataPDUInOrder;
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bool DataSequenceInOrder;
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uint32_t ErrorRecoveryLevel;
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uint32_t ExpCmdSN;
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uint32_t MaxCmdSN;
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uint32_t current_text_itt;
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};
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struct spdk_iscsi_poll_group {
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uint32_t core;
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struct spdk_poller *poller;
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struct spdk_poller *nop_poller;
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STAILQ_HEAD(connections, spdk_iscsi_conn) connections;
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struct spdk_sock_group *sock_group;
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};
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struct spdk_iscsi_opts {
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char *authfile;
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char *nodebase;
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int32_t timeout;
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int32_t nopininterval;
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bool disable_chap;
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bool require_chap;
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bool mutual_chap;
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int32_t chap_group;
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uint32_t MaxSessions;
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uint32_t MaxConnectionsPerSession;
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uint32_t MaxConnections;
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uint32_t MaxQueueDepth;
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uint32_t DefaultTime2Wait;
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uint32_t DefaultTime2Retain;
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uint32_t FirstBurstLength;
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bool ImmediateData;
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uint32_t ErrorRecoveryLevel;
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bool AllowDuplicateIsid;
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uint32_t min_connections_per_core; /* Deprecated */
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};
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struct spdk_iscsi_globals {
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char *authfile;
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char *nodebase;
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pthread_mutex_t mutex;
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TAILQ_HEAD(, spdk_iscsi_portal) portal_head;
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TAILQ_HEAD(, spdk_iscsi_portal_grp) pg_head;
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TAILQ_HEAD(, spdk_iscsi_init_grp) ig_head;
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TAILQ_HEAD(, spdk_iscsi_tgt_node) target_head;
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TAILQ_HEAD(, spdk_iscsi_auth_group) auth_group_head;
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int32_t timeout;
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int32_t nopininterval;
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bool disable_chap;
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bool require_chap;
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bool mutual_chap;
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int32_t chap_group;
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uint32_t MaxSessions;
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uint32_t MaxConnectionsPerSession;
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uint32_t MaxConnections;
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uint32_t MaxQueueDepth;
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uint32_t DefaultTime2Wait;
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uint32_t DefaultTime2Retain;
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uint32_t FirstBurstLength;
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bool ImmediateData;
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uint32_t ErrorRecoveryLevel;
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bool AllowDuplicateIsid;
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struct spdk_mempool *pdu_pool;
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struct spdk_mempool *pdu_immediate_data_pool;
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struct spdk_mempool *pdu_data_out_pool;
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struct spdk_mempool *session_pool;
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struct spdk_mempool *task_pool;
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struct spdk_iscsi_sess **session;
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struct spdk_iscsi_poll_group *poll_group;
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};
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#define ISCSI_SECURITY_NEGOTIATION_PHASE 0
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#define ISCSI_OPERATIONAL_NEGOTIATION_PHASE 1
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#define ISCSI_NSG_RESERVED_CODE 2
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#define ISCSI_FULL_FEATURE_PHASE 3
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enum spdk_error_codes {
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SPDK_ISCSI_CONNECTION_FATAL = -1,
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SPDK_PDU_FATAL = -2,
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};
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#define DGET24(B) \
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((( (uint32_t) *((uint8_t *)(B)+0)) << 16) \
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| (((uint32_t) *((uint8_t *)(B)+1)) << 8) \
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| (((uint32_t) *((uint8_t *)(B)+2)) << 0))
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#define DSET24(B,D) \
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(((*((uint8_t *)(B)+0)) = (uint8_t)((uint32_t)(D) >> 16)), \
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((*((uint8_t *)(B)+1)) = (uint8_t)((uint32_t)(D) >> 8)), \
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((*((uint8_t *)(B)+2)) = (uint8_t)((uint32_t)(D) >> 0)))
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#define xstrdup(s) (s ? strdup(s) : (char *)NULL)
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extern struct spdk_iscsi_globals g_spdk_iscsi;
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extern struct spdk_iscsi_opts *g_spdk_iscsi_opts;
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struct spdk_iscsi_task;
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struct spdk_json_write_ctx;
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typedef void (*spdk_iscsi_init_cb)(void *cb_arg, int rc);
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void spdk_iscsi_init(spdk_iscsi_init_cb cb_fn, void *cb_arg);
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typedef void (*spdk_iscsi_fini_cb)(void *arg);
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void spdk_iscsi_fini(spdk_iscsi_fini_cb cb_fn, void *cb_arg);
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void spdk_shutdown_iscsi_conns_done(void);
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void spdk_iscsi_config_text(FILE *fp);
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void spdk_iscsi_config_json(struct spdk_json_write_ctx *w);
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struct spdk_iscsi_opts *spdk_iscsi_opts_alloc(void);
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void spdk_iscsi_opts_free(struct spdk_iscsi_opts *opts);
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struct spdk_iscsi_opts *spdk_iscsi_opts_copy(struct spdk_iscsi_opts *src);
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void spdk_iscsi_opts_info_json(struct spdk_json_write_ctx *w);
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int spdk_iscsi_set_discovery_auth(bool disable_chap, bool require_chap,
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bool mutual_chap, int32_t chap_group);
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int spdk_iscsi_chap_get_authinfo(struct iscsi_chap_auth *auth, const char *authuser,
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int ag_tag);
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int spdk_iscsi_add_auth_group(int32_t tag, struct spdk_iscsi_auth_group **_group);
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struct spdk_iscsi_auth_group *spdk_iscsi_find_auth_group_by_tag(int32_t tag);
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void spdk_iscsi_delete_auth_group(struct spdk_iscsi_auth_group *group);
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int spdk_iscsi_auth_group_add_secret(struct spdk_iscsi_auth_group *group,
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const char *user, const char *secret,
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const char *muser, const char *msecret);
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int spdk_iscsi_auth_group_delete_secret(struct spdk_iscsi_auth_group *group,
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const char *user);
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void spdk_iscsi_auth_groups_info_json(struct spdk_json_write_ctx *w);
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void spdk_iscsi_send_nopin(struct spdk_iscsi_conn *conn);
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void spdk_iscsi_task_response(struct spdk_iscsi_conn *conn,
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struct spdk_iscsi_task *task);
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int spdk_iscsi_execute(struct spdk_iscsi_conn *conn, struct spdk_iscsi_pdu *pdu);
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int spdk_iscsi_build_iovs(struct spdk_iscsi_conn *conn, struct iovec *iovs, int iovcnt,
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struct spdk_iscsi_pdu *pdu, uint32_t *mapped_length);
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int spdk_iscsi_read_pdu(struct spdk_iscsi_conn *conn, struct spdk_iscsi_pdu **_pdu);
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bool spdk_iscsi_get_dif_ctx(struct spdk_iscsi_conn *conn, struct spdk_iscsi_pdu *pdu,
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struct spdk_dif_ctx *dif_ctx);
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void spdk_iscsi_task_mgmt_response(struct spdk_iscsi_conn *conn,
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struct spdk_iscsi_task *task);
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int spdk_iscsi_conn_params_init(struct iscsi_param **params);
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int spdk_iscsi_sess_params_init(struct iscsi_param **params);
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void spdk_free_sess(struct spdk_iscsi_sess *sess);
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void spdk_clear_all_transfer_task(struct spdk_iscsi_conn *conn,
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struct spdk_scsi_lun *lun,
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struct spdk_iscsi_pdu *pdu);
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void spdk_del_transfer_task(struct spdk_iscsi_conn *conn, uint32_t CmdSN);
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bool spdk_iscsi_is_deferred_free_pdu(struct spdk_iscsi_pdu *pdu);
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int spdk_iscsi_negotiate_params(struct spdk_iscsi_conn *conn,
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struct iscsi_param **params_p, uint8_t *data,
|
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int alloc_len, int data_len);
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int spdk_iscsi_copy_param2var(struct spdk_iscsi_conn *conn);
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void spdk_iscsi_task_cpl(struct spdk_scsi_task *scsi_task);
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void spdk_iscsi_task_mgmt_cpl(struct spdk_scsi_task *scsi_task);
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uint32_t spdk_iscsi_pdu_calc_header_digest(struct spdk_iscsi_pdu *pdu);
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uint32_t spdk_iscsi_pdu_calc_data_digest(struct spdk_iscsi_pdu *pdu);
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|
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/* Memory management */
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|
void spdk_put_pdu(struct spdk_iscsi_pdu *pdu);
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struct spdk_iscsi_pdu *spdk_get_pdu(void);
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int spdk_iscsi_conn_handle_queued_datain_tasks(struct spdk_iscsi_conn *conn);
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void spdk_iscsi_op_abort_task_set(struct spdk_iscsi_task *task,
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|
uint8_t function);
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|
|
|
static inline int
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|
spdk_get_max_immediate_data_size(void)
|
|
{
|
|
/*
|
|
* Specify enough extra space in addition to FirstBurstLength to
|
|
* account for a header digest, data digest and additional header
|
|
* segments (AHS). These are not normally used but they do not
|
|
* take up much space and we need to make sure the worst-case scenario
|
|
* can be satisified by the size returned here.
|
|
*/
|
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return g_spdk_iscsi.FirstBurstLength +
|
|
ISCSI_DIGEST_LEN + /* data digest */
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|
ISCSI_DIGEST_LEN + /* header digest */
|
|
8 + /* bidirectional AHS */
|
|
52; /* extended CDB AHS (for a 64-byte CDB) */
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}
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#endif /* SPDK_ISCSI_H */
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