89859d3118
This removes PDU flushing from the main connection poller - all PDU flushing is now done inline when the PDU is completed, or from the context of the new flush poller. Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: I703cb451d4b548e7f75892e31a7927b511fb4f55 Reviewed-on: https://review.gerrithub.io/395543 Tested-by: SPDK Automated Test System <sys_sgsw@intel.com> Reviewed-by: Daniel Verkamp <daniel.verkamp@intel.com> Reviewed-by: <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Reviewed-by: Ziye Yang <optimistyzy@gmail.com>
189 lines
6.2 KiB
C
189 lines
6.2 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_CONN_H
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#define SPDK_ISCSI_CONN_H
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#include "spdk/stdinc.h"
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#include "iscsi/iscsi.h"
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#include "spdk/queue.h"
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#include "spdk/cpuset.h"
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/*
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* MAX_CONNECTION_PARAMS: The numbers of the params in conn_param_table
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* MAX_SESSION_PARAMS: The numbers of the params in sess_param_table
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*/
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#define MAX_CONNECTION_PARAMS 14
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#define MAX_SESSION_PARAMS 19
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#define MAX_ADDRBUF 64
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#define MAX_INITIATOR_ADDR (MAX_ADDRBUF)
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#define MAX_TARGET_ADDR (MAX_ADDRBUF)
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#define OWNER_ISCSI_CONN 0x1
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#define OBJECT_ISCSI_PDU 0x1
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#define TRACE_GROUP_ISCSI 0x1
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#define TRACE_READ_FROM_SOCKET_DONE SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x0)
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#define TRACE_FLUSH_WRITEBUF_START SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x1)
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#define TRACE_FLUSH_WRITEBUF_DONE SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x2)
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#define TRACE_READ_PDU SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x3)
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#define TRACE_ISCSI_TASK_DONE SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x4)
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#define TRACE_ISCSI_TASK_QUEUE SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x5)
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#define TRACE_ISCSI_CONN_ACTIVE SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x6)
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#define TRACE_ISCSI_CONN_IDLE SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x7)
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struct spdk_poller;
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struct spdk_iscsi_conn {
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int id;
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int is_valid;
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/*
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* All fields below this point are reinitialized each time the
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* connection object is allocated. Make sure to update the
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* SPDK_ISCSI_CONNECTION_MEMSET() macro if changing which fields
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* are initialized when allocated.
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*/
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struct spdk_iscsi_portal *portal;
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int pg_tag;
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char *portal_host;
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char *portal_port;
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struct spdk_cpuset *portal_cpumask;
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uint32_t lcore;
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int sock;
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struct spdk_iscsi_sess *sess;
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enum iscsi_connection_state state;
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int login_phase;
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uint64_t last_flush;
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uint64_t last_fill;
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uint64_t last_nopin;
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/* Timer used to destroy connection after logout if initiator does
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* not close the connection.
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*/
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struct spdk_poller *logout_timer;
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/* Timer used to wait for connection to close
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*/
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struct spdk_poller *shutdown_timer;
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struct spdk_iscsi_pdu *pdu_in_progress;
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TAILQ_HEAD(, spdk_iscsi_pdu) write_pdu_list;
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TAILQ_HEAD(, spdk_iscsi_pdu) snack_pdu_list;
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int pending_r2t;
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struct spdk_iscsi_task *outstanding_r2t_tasks[DEFAULT_MAXR2T];
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uint16_t cid;
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/* IP address */
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char initiator_addr[MAX_INITIATOR_ADDR];
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char target_addr[MAX_TARGET_ADDR];
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/* Initiator/Target port binds */
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char initiator_name[MAX_INITIATOR_NAME];
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struct spdk_scsi_port *initiator_port;
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char target_short_name[MAX_TARGET_NAME];
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struct spdk_scsi_port *target_port;
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struct spdk_iscsi_tgt_node *target;
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struct spdk_scsi_dev *dev;
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/* for fast access */
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int header_digest;
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int data_digest;
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int full_feature;
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struct iscsi_param *params;
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bool sess_param_state_negotiated[MAX_SESSION_PARAMS];
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bool conn_param_state_negotiated[MAX_CONNECTION_PARAMS];
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struct iscsi_chap_auth auth;
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int authenticated;
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int req_auth;
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int req_mutual;
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uint32_t pending_task_cnt;
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uint32_t data_out_cnt;
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uint32_t data_in_cnt;
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bool pending_activate_event;
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int timeout;
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uint64_t nopininterval;
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bool nop_outstanding;
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/*
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* This is the maximum data segment length that iscsi target can send
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* to the initiator on this connection. Not to be confused with the
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* maximum data segment length that initiators can send to iscsi target, which
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* is statically defined as SPDK_ISCSI_MAX_RECV_DATA_SEGMENT_LENGTH.
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*/
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int MaxRecvDataSegmentLength;
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uint32_t StatSN;
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uint32_t exp_statsn;
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uint32_t ttt; /* target transfer tag */
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char *partial_text_parameter;
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STAILQ_ENTRY(spdk_iscsi_conn) link;
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struct spdk_poller *poller;
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struct spdk_poller *flush_poller;
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TAILQ_HEAD(queued_r2t_tasks, spdk_iscsi_task) queued_r2t_tasks;
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TAILQ_HEAD(active_r2t_tasks, spdk_iscsi_task) active_r2t_tasks;
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TAILQ_HEAD(queued_datain_tasks, spdk_iscsi_task) queued_datain_tasks;
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};
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extern struct spdk_iscsi_conn *g_conns_array;
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int spdk_initialize_iscsi_conns(void);
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void spdk_shutdown_iscsi_conns(void);
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int spdk_iscsi_conn_construct(struct spdk_iscsi_portal *portal, int sock);
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void spdk_iscsi_conn_destruct(struct spdk_iscsi_conn *conn);
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void spdk_iscsi_conn_logout(struct spdk_iscsi_conn *conn);
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int spdk_iscsi_drop_conns(struct spdk_iscsi_conn *conn,
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const char *conn_match, int drop_all);
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void spdk_iscsi_conn_set_min_per_core(int count);
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int spdk_iscsi_conn_get_min_per_core(void);
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int spdk_iscsi_conn_read_data(struct spdk_iscsi_conn *conn, int len,
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void *buf);
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void spdk_iscsi_conn_write_pdu(struct spdk_iscsi_conn *conn, struct spdk_iscsi_pdu *pdu);
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void spdk_iscsi_conn_free_pdu(struct spdk_iscsi_conn *conn, struct spdk_iscsi_pdu *pdu);
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#endif /* SPDK_ISCSI_CONN_H */
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