8381b98ef4
Add an new function iscsi_portal_group_resume() and add an new parameter pause to iscsi_portal_group_open(). They will be used in the following patches to pause listening portals while target nodes are created at start-up because Windows hosts do not retry login. Pausing and resuming portal group is possible because we can unlisten temporarily by simply not calling accept(). Any inbound connection requests are queued to the backlog and once the backlog queue is full, further inbound connection requests are simply dropped. If we restart calling accept(), we will dequeue the backlog and be ready for more connecitons. Signed-off-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Change-Id: If7403f91ebd729b47d98a23e589cba8b35569dc6 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/5088 Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com>
107 lines
4.3 KiB
C
107 lines
4.3 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_PORTAL_GRP_H
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#define SPDK_PORTAL_GRP_H
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#include "spdk/conf.h"
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#include "spdk/cpuset.h"
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#include "iscsi/iscsi.h"
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struct spdk_json_write_ctx;
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struct spdk_iscsi_portal {
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struct spdk_iscsi_portal_grp *group;
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char host[MAX_PORTAL_ADDR + 1];
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char port[MAX_PORTAL_PORT + 1];
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struct spdk_sock *sock;
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struct spdk_poller *acceptor_poller;
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TAILQ_ENTRY(spdk_iscsi_portal) per_pg_tailq;
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TAILQ_ENTRY(spdk_iscsi_portal) g_tailq;
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};
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struct spdk_iscsi_portal_grp {
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int ref;
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int tag;
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/* For login redirection, there are two types of portal groups, public and
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* private portal groups. Public portal groups have their portals returned
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* by a discovery session. Private portal groups do not have their portals
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* returned by a discovery session. A public portal group may optionally
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* specify a redirect portal for non-discovery logins. This redirect portal
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* must be from a private portal group.
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*/
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bool is_private;
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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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TAILQ_ENTRY(spdk_iscsi_portal_grp) tailq;
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TAILQ_HEAD(, spdk_iscsi_portal) head;
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};
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/* SPDK iSCSI Portal Group management API */
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struct spdk_iscsi_portal *iscsi_portal_create(const char *host, const char *port);
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void iscsi_portal_destroy(struct spdk_iscsi_portal *p);
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struct spdk_iscsi_portal_grp *iscsi_portal_grp_create(int tag, bool is_private);
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void iscsi_portal_grp_add_portal(struct spdk_iscsi_portal_grp *pg,
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struct spdk_iscsi_portal *p);
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struct spdk_iscsi_portal *iscsi_portal_grp_find_portal_by_addr(
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struct spdk_iscsi_portal_grp *pg, const char *host, const char *port);
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void iscsi_portal_grp_destroy(struct spdk_iscsi_portal_grp *pg);
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void iscsi_portal_grp_release(struct spdk_iscsi_portal_grp *pg);
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int iscsi_parse_portal_grps(void);
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void iscsi_portal_grps_destroy(void);
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int iscsi_portal_grp_register(struct spdk_iscsi_portal_grp *pg);
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struct spdk_iscsi_portal_grp *iscsi_portal_grp_unregister(int tag);
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struct spdk_iscsi_portal_grp *iscsi_portal_grp_find_by_tag(int tag);
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int iscsi_portal_grp_open(struct spdk_iscsi_portal_grp *pg, bool pause);
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void iscsi_portal_grp_resume(struct spdk_iscsi_portal_grp *pg);
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int iscsi_portal_grp_set_chap_params(struct spdk_iscsi_portal_grp *pg,
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bool disable_chap, bool require_chap,
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bool mutual_chap, int32_t chap_group);
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void iscsi_portal_grp_close_all(void);
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void iscsi_portal_grps_info_json(struct spdk_json_write_ctx *w);
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void iscsi_portal_grps_config_json(struct spdk_json_write_ctx *w);
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int iscsi_parse_redirect_addr(struct sockaddr_storage *sa,
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const char *host, const char *port);
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#endif /* SPDK_PORTAL_GRP_H */
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