f4e892fe14
Current fixed sized array for iSCSI target is not thread safe. When newly created targets are inserted into the array, multiple targets may be inserted into the same position. Linked list is better than fixed size array to support dynamic reconfiguration. Change-Id: I4db5a3ec16844db06e0cfcd2aef1f97952f15afa Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-on: https://review.gerrithub.io/385371 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com>
114 lines
4.0 KiB
C
114 lines
4.0 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_TGT_NODE_H_
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#define SPDK_ISCSI_TGT_NODE_H_
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#include "spdk/stdinc.h"
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#include "spdk/scsi.h"
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struct spdk_iscsi_conn;
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#define SPDK_ISCSI_MAX_QUEUE_DEPTH 64
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#define MAX_TARGET_MAP 256
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#define SPDK_TN_TAG_MAX 0x0000ffff
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struct spdk_iscsi_tgt_node_map {
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struct spdk_iscsi_portal_grp *pg;
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struct spdk_iscsi_init_grp *ig;
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};
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struct spdk_iscsi_tgt_node {
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int num;
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char *name;
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char *alias;
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pthread_mutex_t mutex;
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int auth_chap_disabled;
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int auth_chap_required;
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int auth_chap_mutual;
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int auth_group;
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int header_digest;
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int data_digest;
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int queue_depth;
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struct spdk_scsi_dev *dev;
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/**
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* Counts number of active iSCSI connections associated with this
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* target node.
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*/
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uint32_t num_active_conns;
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int lcore;
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int maxmap;
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struct spdk_iscsi_tgt_node_map map[MAX_TARGET_MAP];
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TAILQ_ENTRY(spdk_iscsi_tgt_node) tailq;
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};
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int spdk_iscsi_init_tgt_nodes(void);
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void spdk_iscsi_shutdown_tgt_nodes(void);
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int spdk_iscsi_shutdown_tgt_node_by_name(const char *target_name);
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int spdk_iscsi_send_tgts(struct spdk_iscsi_conn *conn, const char *iiqn,
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const char *iaddr, const char *tiqn, uint8_t *data, int alloc_len,
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int data_len);
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/* This typedef exists to work around an astyle 2.05 bug.
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* Remove it when astyle is fixed.
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*/
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typedef struct spdk_iscsi_tgt_node _spdk_iscsi_tgt_node;
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_spdk_iscsi_tgt_node *
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spdk_iscsi_tgt_node_construct(int target_index,
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const char *name, const char *alias,
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int *pg_tag_list, int *ig_tag_list, uint16_t num_maps,
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char *lun_name_list[], int *lun_id_list, int num_luns,
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int queue_depth,
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int no_auth_chap, int auth_chap, int auth_chap_mutual, int auth_group,
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int header_digest, int data_digest);
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bool spdk_iscsi_tgt_node_access(struct spdk_iscsi_conn *conn,
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struct spdk_iscsi_tgt_node *target, const char *iqn,
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const char *addr);
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struct spdk_iscsi_tgt_node *spdk_iscsi_find_tgt_node(const char *target_name);
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int spdk_iscsi_tgt_node_reset(struct spdk_iscsi_tgt_node *target,
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uint64_t lun);
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int spdk_iscsi_tgt_node_cleanup_luns(struct spdk_iscsi_conn *conn,
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struct spdk_iscsi_tgt_node *target);
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void spdk_iscsi_tgt_node_delete_map(struct spdk_iscsi_portal_grp *portal_group,
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struct spdk_iscsi_init_grp *initiator_group);
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#endif /* SPDK_ISCSI_TGT_NODE_H_ */
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