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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 2009, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2013, 2015 Nexenta Systems, Inc. All rights reserved.
*/
#ifndef _PPPT_H
#define _PPPT_H
#include <sys/pppt_ic_if.h>
#ifdef __cplusplus
extern "C" {
#endif
#define PPPT_GLOBAL_LOCK() mutex_enter(&pppt_global.global_lock)
#define PPPT_GLOBAL_UNLOCK() mutex_exit(&pppt_global.global_lock)
extern int pppt_logging;
#define PPPT_LOG if (pppt_logging) cmn_err
#define TGT_DEREG_RETRY_SECONDS 1
typedef enum {
PPPT_STATUS_SUCCESS = 0,
PPPT_STATUS_FAIL,
PPPT_STATUS_ABORTED,
PPPT_STATUS_DONE
} pppt_status_t;
#define PPPT_MODNAME "pppt"
#define TGT_STATE_LIST() \
item(TS_UNDEFINED) \
item(TS_CREATED) \
item(TS_ONLINING) \
item(TS_ONLINE) \
item(TS_STMF_ONLINE) \
item(TS_DELETING_NEED_OFFLINE) \
item(TS_OFFLINING) \
item(TS_OFFLINE) \
item(TS_STMF_OFFLINE) \
item(TS_DELETING_STMF_DEREG) \
item(TS_DELETING_STMF_DEREG_FAIL) \
item(TS_DELETING) \
item(TS_MAX_STATE)
/* Target states and events, update pppt_ts_name table whenever modified */
typedef enum {
#define item(a) a,
TGT_STATE_LIST()
#undef item
} pppt_tgt_state_t;
#ifdef PPPT_TGT_SM_STRINGS
static const char *pppt_ts_name[TS_MAX_STATE + 1] = {
#define item(a) #a,
TGT_STATE_LIST()
#undef item
};
#endif
#define TGT_EVENT_LIST() \
item(TE_UNDEFINED) \
item(TE_STMF_ONLINE_REQ) \
item(TE_ONLINE_SUCCESS) \
item(TE_ONLINE_FAIL) \
item(TE_STMF_ONLINE_COMPLETE_ACK) \
item(TE_STMF_OFFLINE_REQ) \
item(TE_OFFLINE_COMPLETE) \
item(TE_STMF_OFFLINE_COMPLETE_ACK) \
item(TE_DELETE) \
item(TE_STMF_DEREG_SUCCESS) \
item(TE_STMF_DEREG_FAIL) \
item(TE_STMF_DEREG_RETRY) \
item(TE_WAIT_REF_COMPLETE) /* XXX */ \
item(TE_MAX_EVENT)
typedef enum {
#define item(a) a,
TGT_EVENT_LIST()
#undef item
} pppt_tgt_event_t;
#ifdef PPPT_TGT_SM_STRINGS
static const char *pppt_te_name[TE_MAX_EVENT + 1] = {
#define item(a) #a,
TGT_EVENT_LIST()
#undef item
};
#endif
typedef struct pppt_tgt_s {
kmutex_t target_mutex;
kcondvar_t target_cv;
avl_node_t target_global_ln;
scsi_devid_desc_t *target_devid;
stmf_local_port_t *target_stmf_lport;
avl_tree_t target_sess_list;
/* Target state */
boolean_t target_sm_busy;
boolean_t target_deleting;
pppt_tgt_state_t target_state;
pppt_tgt_state_t target_last_state;
int target_refcount;
list_t target_events;
} pppt_tgt_t;
typedef struct {
struct pppt_tgt_s *ps_target;
uint64_t ps_session_id;
int ps_refcnt;
kmutex_t ps_mutex;
kcondvar_t ps_cv;
boolean_t ps_closed;
avl_node_t ps_global_ln;
avl_node_t ps_target_ln;
avl_tree_t ps_task_list;
stmf_scsi_session_t *ps_stmf_sess;
} pppt_sess_t;
typedef struct {
stmf_data_buf_t *pbuf_stmf_buf;
boolean_t pbuf_is_immed;
stmf_ic_msg_t *pbuf_immed_msg;
} pppt_buf_t;
typedef enum {
PTS_INIT = 0,
PTS_ACTIVE,
PTS_DONE,
PTS_SENT_STATUS,
PTS_ABORTED
} pppt_task_state_t;
typedef struct {
pppt_sess_t *pt_sess;
avl_node_t pt_sess_ln;
int pt_refcnt;
kmutex_t pt_mutex;
stmf_ic_msgid_t pt_task_id;
uint8_t pt_lun_id[16];
pppt_task_state_t pt_state;
scsi_task_t *pt_stmf_task;
pppt_buf_t *pt_immed_data;
pppt_buf_t *pt_read_buf;
stmf_ic_msgid_t pt_read_xfer_msgid;
} pppt_task_t;
/*
* Error statistics
*/
typedef struct {
uint64_t es_tgt_reg_svc_disabled;
uint64_t es_tgt_reg_duplicate;
uint64_t es_tgt_reg_create_fail;
uint64_t es_tgt_dereg_svc_disabled;
uint64_t es_tgt_dereg_not_found;
uint64_t es_sess_destroy_no_session;
uint64_t es_sess_lookup_no_session;
uint64_t es_sess_lookup_ident_mismatch;
uint64_t es_sess_lookup_bad_tgt_state;
uint64_t es_scmd_ptask_alloc_fail;
uint64_t es_scmd_sess_create_fail;
uint64_t es_scmd_stask_alloc_fail;
uint64_t es_scmd_dup_task_count;
} pppt_error_stats_t;
#define PPPT_INC_STAT(stat_field) \
atomic_inc_64(&pppt_global.global_error_stats.stat_field);
/*
* State values for the iscsit service
*/
typedef enum {
PSS_UNDEFINED = 0,
PSS_DETACHED,
PSS_DISABLED,
PSS_ENABLING,
PSS_ENABLED,
PSS_BUSY,
PSS_DISABLING
} pppt_service_state_t;
typedef struct {
pppt_service_state_t global_svc_state;
dev_info_t *global_dip;
stmf_port_provider_t *global_pp;
stmf_dbuf_store_t *global_dbuf_store;
taskq_t *global_dispatch_taskq;
taskq_t *global_sess_taskq;
avl_tree_t global_sess_list;
avl_tree_t global_target_list;
kmutex_t global_lock;
door_handle_t global_door;
kmutex_t global_door_lock;
pppt_error_stats_t global_error_stats;
} pppt_global_t;
extern pppt_global_t pppt_global;
stmf_status_t pppt_lport_xfer_data(scsi_task_t *task, stmf_data_buf_t *dbuf,
uint32_t ioflags);
void pppt_xfer_read_complete(pppt_task_t *pppt_task, stmf_status_t status);
stmf_status_t pppt_lport_send_status(scsi_task_t *task, uint32_t ioflags);
void pppt_lport_task_free(scsi_task_t *task);
stmf_status_t pppt_lport_abort(stmf_local_port_t *lport, int abort_cmd,
void *arg, uint32_t flags);
void pppt_lport_ctl(stmf_local_port_t *lport, int cmd, void *arg);
pppt_sess_t *pppt_sess_lookup_locked(uint64_t session_id,
scsi_devid_desc_t *lport_devid,
stmf_remote_port_t *rport);
pppt_sess_t *pppt_sess_lookup_by_id_locked(uint64_t session_id);
pppt_sess_t *pppt_sess_lookup_create(scsi_devid_desc_t *lport_devid,
scsi_devid_desc_t *rport_devid, stmf_remote_port_t *rport,
uint64_t session_id, stmf_status_t *statusp);
void pppt_sess_rele(pppt_sess_t *sks);
void pppt_sess_rele_locked(pppt_sess_t *sks);
void pppt_sess_close_locked(pppt_sess_t *ps);
int pppt_sess_avl_compare_by_id(const void *void_sess1,
const void *void_sess2);
int pppt_sess_avl_compare_by_name(const void *void_sess1,
const void *void_sess2);
pppt_task_t *pppt_task_alloc(void);
void pppt_task_free(pppt_task_t *ptask);
pppt_status_t pppt_task_start(pppt_task_t *ptask);
pppt_status_t pppt_task_done(pppt_task_t *ptask);
pppt_task_t *pppt_task_lookup(stmf_ic_msgid_t msgid);
void pppt_msg_rx(stmf_ic_msg_t *msg);
void pppt_msg_tx_status(stmf_ic_msg_t *orig_msg, stmf_status_t status);
pppt_tgt_t *pppt_tgt_lookup(scsi_devid_desc_t *tgt_devid);
pppt_tgt_t *pppt_tgt_lookup_locked(scsi_devid_desc_t *tgt_devid);
pppt_tgt_t *pppt_tgt_create(stmf_ic_reg_port_msg_t *reg_port,
stmf_status_t *errcode);
void pppt_tgt_async_delete(pppt_tgt_t *tgt);
void pppt_tgt_destroy(pppt_tgt_t *tgt);
int pppt_tgt_avl_compare(const void *void_tgt1, const void *void_tgt2);
void pppt_tgt_sm_ctl(stmf_local_port_t *lport, int cmd, void *arg);
pppt_status_t pppt_task_hold(pppt_task_t *);
#ifdef __cplusplus
}
#endif
#endif /* _PPPT_H */
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