39e850d17b
Connections will soon be assigned to poll groups, which will be dynamically moved between CPU cores based on load. It no longer makes sense to restrict certain portal groups to specific cpu cores in this model. Change-Id: Iee983d75febc9797aa60021c5bc0680335e895cd Signed-off-by: Ben Walker <benjamin.walker@intel.com> Reviewed-on: https://review.gerrithub.io/c/spdk/spdk/+/463358 Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
193 lines
6.6 KiB
C
193 lines
6.6 KiB
C
/*-
|
|
* BSD LICENSE
|
|
*
|
|
* Copyright (C) 2008-2012 Daisuke Aoyama <aoyama@peach.ne.jp>.
|
|
* Copyright (c) Intel Corporation.
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* * Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* * Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
* * Neither the name of Intel Corporation nor the names of its
|
|
* contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
|
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef SPDK_ISCSI_CONN_H
|
|
#define SPDK_ISCSI_CONN_H
|
|
|
|
#include "spdk/stdinc.h"
|
|
|
|
#include "iscsi/iscsi.h"
|
|
#include "spdk/queue.h"
|
|
#include "spdk/cpuset.h"
|
|
#include "spdk/scsi.h"
|
|
|
|
/*
|
|
* MAX_CONNECTION_PARAMS: The numbers of the params in conn_param_table
|
|
* MAX_SESSION_PARAMS: The numbers of the params in sess_param_table
|
|
*/
|
|
#define MAX_CONNECTION_PARAMS 14
|
|
#define MAX_SESSION_PARAMS 19
|
|
|
|
#define MAX_ADDRBUF 64
|
|
#define MAX_INITIATOR_ADDR (MAX_ADDRBUF)
|
|
#define MAX_TARGET_ADDR (MAX_ADDRBUF)
|
|
|
|
#define OWNER_ISCSI_CONN 0x1
|
|
|
|
#define OBJECT_ISCSI_PDU 0x1
|
|
|
|
#define TRACE_GROUP_ISCSI 0x1
|
|
#define TRACE_ISCSI_READ_FROM_SOCKET_DONE SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x0)
|
|
#define TRACE_ISCSI_FLUSH_WRITEBUF_START SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x1)
|
|
#define TRACE_ISCSI_FLUSH_WRITEBUF_DONE SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x2)
|
|
#define TRACE_ISCSI_READ_PDU SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x3)
|
|
#define TRACE_ISCSI_TASK_DONE SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x4)
|
|
#define TRACE_ISCSI_TASK_QUEUE SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x5)
|
|
#define TRACE_ISCSI_TASK_EXECUTED SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x6)
|
|
#define TRACE_ISCSI_PDU_COMPLETED SPDK_TPOINT_ID(TRACE_GROUP_ISCSI, 0x7)
|
|
|
|
struct spdk_poller;
|
|
|
|
struct spdk_iscsi_conn {
|
|
int id;
|
|
int is_valid;
|
|
/*
|
|
* All fields below this point are reinitialized each time the
|
|
* connection object is allocated. Make sure to update the
|
|
* SPDK_ISCSI_CONNECTION_MEMSET() macro if changing which fields
|
|
* are initialized when allocated.
|
|
*/
|
|
struct spdk_iscsi_portal *portal;
|
|
int pg_tag;
|
|
char *portal_host;
|
|
char *portal_port;
|
|
uint32_t lcore;
|
|
struct spdk_sock *sock;
|
|
struct spdk_iscsi_sess *sess;
|
|
|
|
enum iscsi_connection_state state;
|
|
int login_phase;
|
|
|
|
uint64_t last_flush;
|
|
uint64_t last_fill;
|
|
uint64_t last_nopin;
|
|
|
|
/* Timer used to destroy connection after logout if initiator does
|
|
* not close the connection.
|
|
*/
|
|
struct spdk_poller *logout_timer;
|
|
|
|
/* Timer used to wait for connection to close
|
|
*/
|
|
struct spdk_poller *shutdown_timer;
|
|
|
|
struct spdk_iscsi_pdu *pdu_in_progress;
|
|
|
|
TAILQ_HEAD(, spdk_iscsi_pdu) write_pdu_list;
|
|
TAILQ_HEAD(, spdk_iscsi_pdu) snack_pdu_list;
|
|
|
|
int pending_r2t;
|
|
struct spdk_iscsi_task *outstanding_r2t_tasks[DEFAULT_MAXR2T];
|
|
|
|
uint16_t cid;
|
|
|
|
/* IP address */
|
|
char initiator_addr[MAX_INITIATOR_ADDR];
|
|
char target_addr[MAX_TARGET_ADDR];
|
|
|
|
/* Initiator/Target port binds */
|
|
char initiator_name[MAX_INITIATOR_NAME];
|
|
struct spdk_scsi_port *initiator_port;
|
|
char target_short_name[MAX_TARGET_NAME];
|
|
struct spdk_scsi_port *target_port;
|
|
struct spdk_iscsi_tgt_node *target;
|
|
struct spdk_scsi_dev *dev;
|
|
|
|
/* for fast access */
|
|
int header_digest;
|
|
int data_digest;
|
|
int full_feature;
|
|
|
|
struct iscsi_param *params;
|
|
bool sess_param_state_negotiated[MAX_SESSION_PARAMS];
|
|
bool conn_param_state_negotiated[MAX_CONNECTION_PARAMS];
|
|
struct iscsi_chap_auth auth;
|
|
bool authenticated;
|
|
bool require_chap;
|
|
bool mutual_chap;
|
|
uint32_t pending_task_cnt;
|
|
uint32_t data_out_cnt;
|
|
uint32_t data_in_cnt;
|
|
|
|
int timeout;
|
|
uint64_t nopininterval;
|
|
bool nop_outstanding;
|
|
|
|
/*
|
|
* This is the maximum data segment length that iscsi target can send
|
|
* to the initiator on this connection. Not to be confused with the
|
|
* maximum data segment length that initiators can send to iscsi target, which
|
|
* is statically defined as SPDK_ISCSI_MAX_RECV_DATA_SEGMENT_LENGTH.
|
|
*/
|
|
int MaxRecvDataSegmentLength;
|
|
|
|
uint32_t StatSN;
|
|
uint32_t exp_statsn;
|
|
uint32_t ttt; /* target transfer tag */
|
|
char *partial_text_parameter;
|
|
|
|
STAILQ_ENTRY(spdk_iscsi_conn) link;
|
|
struct spdk_poller *flush_poller;
|
|
bool is_stopped; /* Set true when connection is stopped for migration */
|
|
TAILQ_HEAD(queued_r2t_tasks, spdk_iscsi_task) queued_r2t_tasks;
|
|
TAILQ_HEAD(active_r2t_tasks, spdk_iscsi_task) active_r2t_tasks;
|
|
TAILQ_HEAD(queued_datain_tasks, spdk_iscsi_task) queued_datain_tasks;
|
|
|
|
struct spdk_scsi_lun_desc *open_lun_descs[SPDK_SCSI_DEV_MAX_LUN];
|
|
};
|
|
|
|
extern struct spdk_iscsi_conn *g_conns_array;
|
|
|
|
int spdk_initialize_iscsi_conns(void);
|
|
void spdk_shutdown_iscsi_conns(void);
|
|
void spdk_iscsi_conns_start_exit(struct spdk_iscsi_tgt_node *target);
|
|
int spdk_iscsi_get_active_conns(struct spdk_iscsi_tgt_node *target);
|
|
|
|
int spdk_iscsi_conn_construct(struct spdk_iscsi_portal *portal, struct spdk_sock *sock);
|
|
void spdk_iscsi_conn_destruct(struct spdk_iscsi_conn *conn);
|
|
void spdk_iscsi_conn_handle_nop(struct spdk_iscsi_conn *conn);
|
|
void spdk_iscsi_conn_schedule(struct spdk_iscsi_conn *conn);
|
|
void spdk_iscsi_conn_logout(struct spdk_iscsi_conn *conn);
|
|
int spdk_iscsi_drop_conns(struct spdk_iscsi_conn *conn,
|
|
const char *conn_match, int drop_all);
|
|
|
|
int spdk_iscsi_conn_read_data(struct spdk_iscsi_conn *conn, int len, void *buf);
|
|
int spdk_iscsi_conn_readv_data(struct spdk_iscsi_conn *conn,
|
|
struct iovec *iov, int iovcnt);
|
|
void spdk_iscsi_conn_write_pdu(struct spdk_iscsi_conn *conn, struct spdk_iscsi_pdu *pdu);
|
|
|
|
void spdk_iscsi_conn_free_pdu(struct spdk_iscsi_conn *conn, struct spdk_iscsi_pdu *pdu);
|
|
|
|
#endif /* SPDK_ISCSI_CONN_H */
|