d10401cc07
Reason: If we trigger the spdk_iscsi_conn_migration, we may face the issue that the io channel of lun is NULL(which means not allocated). So I think that if we trigger the migration, we need to stop the executing the further pdu of this conn by the current polling group. Also since the connection is triggered migration, we should stop execution on the current core, and let this connection be handled by next round. Change-Id: I0ab89d79c976f3233890ae25cb7eac98de5e30ac Signed-off-by: Ziye Yang <optimistyzy@gmail.com> Reviewed-on: https://review.gerrithub.io/409984 Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
191 lines
6.4 KiB
C
191 lines
6.4 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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struct spdk_sock *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 *flush_poller;
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bool is_stopped; /* Set true when connection is stopped for migration */
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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, struct spdk_sock *sock);
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void spdk_iscsi_conn_destruct(struct spdk_iscsi_conn *conn);
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void spdk_iscsi_conn_handle_nop(struct spdk_iscsi_conn *conn);
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void spdk_iscsi_conn_migration(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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