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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 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#ifndef _SES_IMPL_H
#define _SES_IMPL_H
#pragma ident "%Z%%M% %I% %E% SMI"
#ifdef __cplusplus
extern "C" {
#endif
#include <alloca.h>
#include <errno.h>
#include <assert.h>
#include <dirent.h>
#include <dlfcn.h>
#include <limits.h>
#include <pthread.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <libnvpair.h>
#include <unistd.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <sys/sysmacros.h>
#include <sys/systeminfo.h>
#include <scsi/libscsi.h>
#include <scsi/libses_plugin.h>
#include <scsi/plugins/ses/framework/ses2_impl.h>
#define LIBSES_ERRMSGLEN 512
#define LIBSES_DEFAULT_PLUGINDIR "/usr/lib/scsi/plugins/ses"
#define LIBSES_PLUGIN_FRAMEWORK "framework"
#define LIBSES_PLUGIN_VENDOR "vendor"
#define LIBSES_PLUGIN_EXT ".so"
struct ses_plugin {
struct ses_plugin *sp_next; /* next plugin in list */
struct ses_plugin *sp_prev; /* previous plugin in list */
uint64_t sp_priority; /* plugin priority */
struct ses_target *sp_target; /* corresponding target */
void *sp_object; /* shared object */
void *sp_data; /* module-specific data */
boolean_t sp_initialized; /* successfully initialized */
ses_pagedesc_t *sp_pages; /* pages */
int (*sp_init)(ses_plugin_t *); /* plugin init */
void (*sp_fini)(ses_plugin_t *); /* plugin fini */
int (*sp_node_parse)(ses_plugin_t *, ses_node_t *); /* parse node */
int (*sp_node_ctl)(ses_plugin_t *, ses_node_t *, const char *,
nvlist_t *); /* node control */
};
struct ses_target {
libscsi_hdl_t *st_scsi_hdl;
libscsi_target_t *st_target;
struct ses_plugin *st_plugin_first;
struct ses_plugin *st_plugin_last;
struct ses_snap *st_snapshots;
boolean_t st_closescsi;
boolean_t st_truncate;
pthread_mutex_t st_lock;
};
/*
* Maximum number of snapshot retries triggered by generation count changes
*/
#define LIBSES_MAX_GC_RETRIES 10
/*
* Maximum number of Enclosure Busy retries
*/
#define LIBSES_MAX_BUSY_RETRIES 3
typedef struct ses_snap_page {
ses2_diag_page_t ssp_num;
boolean_t ssp_control;
boolean_t ssp_initialized;
size_t ssp_alloc;
size_t ssp_len;
void *ssp_page;
char *ssp_mmap_base;
size_t ssp_mmap_len;
struct ses_snap_page *ssp_next;
struct ses_snap_page *ssp_unique;
} ses_snap_page_t;
struct ses_snap {
struct ses_target *ss_target;
uint32_t ss_generation;
hrtime_t ss_time;
struct ses_node *ss_root;
size_t ss_n_elem;
ses_snap_page_t *ss_pages;
size_t ss_n_nodes;
struct ses_node **ss_nodes;
struct ses_snap *ss_next;
struct ses_snap *ss_prev;
uint32_t ss_refcnt;
};
struct ses_node {
ses_node_type_t sn_type;
uint64_t sn_rootidx; /* Relative index for enclosure/aggregate */
size_t sn_id; /* Unique global ID */
uint64_t sn_enc_num;
struct ses_snap *sn_snapshot;
struct ses_node *sn_parent;
struct ses_node *sn_next_sibling;
struct ses_node *sn_prev_sibling;
struct ses_node *sn_first_child;
struct ses_node *sn_last_child;
nvlist_t *sn_props;
};
extern int ses_fill_snap(ses_snap_t *);
extern void ses_node_teardown(ses_node_t *);
extern ses_snap_page_t *ses_snap_find_page(ses_snap_t *, ses2_diag_page_t,
boolean_t);
extern ses_snap_page_t *ses_snap_ctl_page(ses_snap_t *,
ses2_diag_page_t, size_t, boolean_t);
extern int ses_snap_do_ctl(ses_snap_t *);
extern int ses_libscsi_error(libscsi_hdl_t *, const char *, ...);
extern int ses_scsi_error(libscsi_action_t *, const char *, ...);
extern int ses_plugin_load(ses_target_t *);
extern void ses_plugin_unload(ses_target_t *);
extern ses_pagedesc_t *ses_get_pagedesc(ses_target_t *, int, ses_pagetype_t);
extern int ses_fill_node(ses_node_t *);
extern int enc_parse_ed(ses2_ed_impl_t *, nvlist_t *);
extern int enc_parse_td(ses2_td_hdr_impl_t *, const char *, nvlist_t *);
#ifdef __cplusplus
}
#endif
#endif /* _SES_IMPL_H */
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