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NetBSD/sbin/iscsid/iscsid_globals.h

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/* $NetBSD: iscsid_globals.h,v 1.7 2012/05/28 00:13:19 riz Exp $ */
/*-
* Copyright (c) 2005,2006,2011 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Wasabi Systems, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 _ISCSID_GLOBALS_H
#define _ISCSID_GLOBALS_H
#ifndef _THREAD_SAFE
#define _THREAD_SAFE 1
#endif
#include <sys/queue.h>
#include <sys/scsiio.h>
#include <sys/param.h>
#include <uvm/uvm_param.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#ifndef ISCSI_NOTHREAD
#include <pthread.h>
#endif
#include <iscsi.h>
#include <iscsi_ioctl.h>
#include "iscsid.h"
/* ------------------------- Global Constants ----------------------------- */
/* Version information */
#define INTERFACE_VERSION 2
#define VERSION_MAJOR 3
#define VERSION_MINOR 1
#define VERSION_STRING "NetBSD iSCSI Software Initiator Daemon 20110407 "
/* Sizes for the static request and response buffers. */
/* 8k should be more than enough for both. */
#define REQ_BUFFER_SIZE 8192
#define RSP_BUFFER_SIZE 8192
#define ISCSI_DEFAULT_PORT 3260
#define ISCSI_DEFAULT_ISNS_PORT 3205
/* --------------------------- Global Types ------------------------------- */
#ifndef TRUE
typedef int boolean_t;
#define TRUE 1
#define FALSE 0
#endif
/*
* The generic list entry.
* Almost all lists in the daemon use this structure as the base for
* list processing. It contains both a numeric ID and a symbolic name.
* Using the same structure for all lists greatly simplifies processing.
*
* All structures that will be linked into searchable lists have to define
* their first structure field as "generic_entry_t entry".
*/
struct generic_entry_s
{
TAILQ_ENTRY(generic_entry_s) link; /* the list link */
iscsid_sym_id_t sid; /* the entry ID and name */
};
typedef struct generic_entry_s generic_entry_t;
TAILQ_HEAD(generic_list_s, generic_entry_s);
typedef struct generic_list_s generic_list_t;
/*
* The iSNS list structure.
* This structure contains the list of iSNS servers that have been added
*/
struct isns_s
{
generic_entry_t entry; /* global list link */
uint8_t address[ISCSI_ADDRESS_LENGTH]; /* iSNS Server Address */
uint16_t port; /* Port (0 = default) */
int sock; /* socket if registered, else -1 */
/* following fields only valid if sock >= 0 */
uint8_t reg_iscsi_name[ISCSI_STRING_LENGTH]; /* Registered ISCSI Name */
uint8_t reg_entity_id[ISCSI_STRING_LENGTH]; /* Registered Entity Identifier */
uint8_t reg_ip_addr[16]; /* registered IP address */
uint32_t reg_ip_port; /* registered IP port */
};
TAILQ_HEAD(isns_list_s, isns_s);
typedef struct isns_s isns_t;
typedef struct isns_list_s isns_list_t;
/*
* The initiator portal list structure.
*/
typedef struct initiator_s initiator_t;
struct initiator_s
{
generic_entry_t entry; /* global list link */
uint8_t address[ISCSI_ADDRESS_LENGTH]; /* address */
uint32_t active_connections; /* connection count */
};
TAILQ_HEAD(initiator_list_s, initiator_s);
typedef struct initiator_list_s initiator_list_t;
/*
* The portal structure.
* This structure is linked into two lists - a global portal list (this list
* is used for searches and to verify unique IDs) and a portal group list
* attached to the owning target.
*/
typedef enum
{
PORTAL_TYPE_STATIC = 0,
PORTAL_TYPE_SENDTARGET = 1,
PORTAL_TYPE_ISNS = 2,
PORTAL_TYPE_REFRESHING = 99
} iscsi_portal_types_t;
/*
PORTAL_TYPE_STATIC
Indicates that target was statically added
PORTAL_TYPE_SENDTARGET
Indicates that target was added as result of SendTargets discovery
PORTAL_TYPE_ISNS
Indicates that target was added as result of iSNS discovery
PORTAL_TYPE_REFRESHING
Discovered portals are set to this when we are refreshing
(via REFRESH_TARGETS). As a portal is discovered, its type is reset to
SENDTARGET or ISNS, so any portals which remain set to REFRESHING were not
discovered and thus can be removed.
*/
typedef struct portal_s portal_t;
typedef struct portal_group_s portal_group_t;
typedef struct target_s target_t;
typedef struct send_target_s send_target_t;
struct portal_s
{
generic_entry_t entry; /* global list link */
TAILQ_ENTRY(portal_s) group_list; /* group list link */
iscsi_portal_address_t addr; /* address */
iscsid_portal_options_t options; /* portal options (override target options) */
target_t *target; /* back pointer to target */
portal_group_t *group; /* back pointer to group head */
iscsi_portal_types_t portaltype; /* Type of portal (how it was discovered) */
uint32_t discoveryid; /* ID of sendtargets or isnsserver */
uint32_t active_connections; /* Number of connections active on this portal */
};
TAILQ_HEAD(portal_list_s, portal_s);
typedef struct portal_list_s portal_list_t;
/*
* The portal group structure.
* This structure is not searchable, and has no generic list entry field.
* It links all portals with the same group tag to the owning target.
*/
struct portal_group_s
{
TAILQ_ENTRY(portal_group_s) groups; /* link to next group */
portal_list_t portals; /* the list of portals for this tag */
uint32_t tag; /* the group tag */
u_short num_portals; /* the number of portals in this list */
};
TAILQ_HEAD(portal_group_list_s, portal_group_s);
typedef struct portal_group_list_s portal_group_list_t;
/*
* The target structure.
* Contains target information including connection and authentication options.
*****************************************************************************
* WARNING: This structure is used interchangeably with a send_target structure
* in many routines dealing with targets to avoid duplicating code.
* The first fields in both structures up to and including
* the authentication options MUST match for this to work.
* If you change one, you MUST change the other accordingly.
*****************************************************************************
*/
struct target_s
{
generic_entry_t entry; /* global list link */
uint8_t TargetName[ISCSI_STRING_LENGTH]; /* TargetName */
uint8_t TargetAlias[ISCSI_STRING_LENGTH]; /* TargetAlias */
u_short num_portals; /* the number of portals */
u_short num_groups; /* the number of groups */
iscsid_get_set_target_options_t options; /* connection options */
iscsid_set_target_authentication_req_t auth; /* authentication options */
portal_group_list_t group_list; /* the list of portal groups */
};
TAILQ_HEAD(target_list_s, target_s);
typedef struct target_list_s target_list_t;
/*
* The Send Target structure.
* Contains target information including connection and authentication options
* plus a single portal.
*****************************************************************************
* WARNING: This structure is used interchangeably with a target structure
* in many routines dealing with targets to avoid duplicating code.
* The first fields in both structures up to and including
* the authentication options MUST match for this to work.
* If you change one, you MUST change the other accordingly.
*****************************************************************************
*/
struct send_target_s
{
generic_entry_t entry; /* global list link */
uint8_t TargetName[ISCSI_STRING_LENGTH]; /* TargetName */
uint8_t TargetAlias[ISCSI_STRING_LENGTH]; /* TargetAlias */
u_short num_portals; /* the number of portals */
u_short num_groups; /* the number of groups */
/* */
iscsid_get_set_target_options_t options; /* connection options */
iscsid_set_target_authentication_req_t auth; /* authentication options */
iscsi_portal_address_t addr; /* address */
};
TAILQ_HEAD(send_target_list_s, send_target_s);
typedef struct send_target_list_s send_target_list_t;
/*
Target and Portal information maintained in the connection structure.
*/
struct target_info_s
{
iscsid_sym_id_t sid; /* the entry ID and name */
uint8_t TargetName[ISCSI_STRING_LENGTH]; /* TargetName */
uint8_t TargetAlias[ISCSI_STRING_LENGTH]; /* TargetAlias */
iscsid_get_set_target_options_t options; /* connection options */
iscsid_set_target_authentication_req_t auth; /* authentication options */
};
typedef struct target_info_s target_info_t;
struct portal_info_s
{
iscsid_sym_id_t sid; /* the entry ID and name */
iscsi_portal_address_t addr; /* address */
};
typedef struct portal_info_s portal_info_t;
/*
Per connection data: the connection structure.
*/
typedef struct connection_s connection_t;
typedef struct session_s session_t;
struct connection_s
{
generic_entry_t entry; /* connection list link */
session_t *session; /* back pointer to the owning session */
target_info_t target; /* connected target */
portal_info_t portal; /* connected portal */
uint32_t initiator_id; /* connected initiator portal */
iscsi_login_parameters_t loginp; /* Login parameters for recovery */
};
/*
Per session data: the session structure
*/
struct session_s
{
generic_entry_t entry; /* global list link */
target_info_t target; /* connected target */
iscsi_login_session_type_t login_type; /* session type */
uint32_t max_connections; /* maximum connections */
uint32_t num_connections; /* currently active connections */
generic_list_t connections; /* the list of connections */
};
/* the session list type */
TAILQ_HEAD(session_list_s, session_s);
typedef struct session_list_s session_list_t;
/* list head with entry count */
typedef struct
{
generic_list_t list;
int num_entries;
} list_head_t;
/* ------------------------- Global Variables ----------------------------- */
/* In iscsid_main.c */
int driver; /* the driver's file desc */
int client_sock; /* the client communication socket */
list_head_t list[NUM_DAEMON_LISTS]; /* the lists this daemon keeps */
#ifndef ISCSI_NOTHREAD
pthread_t event_thread; /* event handler thread ID */
pthread_mutex_t sesslist_lock; /* session list lock */
#endif
/* in iscsid_discover.c */
iscsid_set_node_name_req_t node_name;
/* ------------------------- Global Functions ----------------------------- */
/* Debugging stuff */
extern int debug_level; /* How much info to display */
#define DEBOUT(x) printf x
#define DEB(lev,x) {if (debug_level >= lev) printf x ;}
/* Session list protection shortcuts */
#if 0
#define LOCK_SESSIONS verify_sessions()
#define UNLOCK_SESSIONS
#endif
#define LOCK_SESSIONS if (nothreads) event_handler(NULL); else pthread_mutex_lock(&sesslist_lock)
#define UNLOCK_SESSIONS if (!nothreads) pthread_mutex_unlock(&sesslist_lock)
/* Check whether ID is present */
#define NO_ID(sid) (!(sid)->id && !(sid)->name[0])
/* iscsid_main.c */
iscsid_response_t *make_rsp(size_t, iscsid_response_t **, int *);
void exit_daemon(void) __dead;
/* iscsid_lists.c */
generic_entry_t *find_id(generic_list_t *, uint32_t);
generic_entry_t *find_name(generic_list_t *, uint8_t *);
generic_entry_t *find_sym_id(generic_list_t *, iscsid_sym_id_t *);
uint32_t get_id(generic_list_t *, iscsid_sym_id_t *);
target_t *find_target(iscsid_list_kind_t, iscsid_sym_id_t *);
target_t *find_TargetName(iscsid_list_kind_t, uint8_t *);
portal_t *find_portal_by_addr(target_t *, iscsi_portal_address_t *);
send_target_t *find_send_target_by_addr(iscsi_portal_address_t *);
#define find_isns_id(id) \
(isns_t *)(void *)find_id(&list [ISNS_LIST].list, id)
#define find_session_id(id) \
(session_t *)(void *)find_id(&list [SESSION_LIST].list, id)
#define find_connection_id(session, id) \
(connection_t *)(void *)find_id(&session->connections, id)
#define find_portal_id(id) \
(portal_t *)(void *)find_id(&list [PORTAL_LIST].list, id)
#define find_target_id(lst, id) \
(target_t *)(void *)find_id(&list [lst].list, id)
#define find_send_target_id(id) \
(send_target_t *)(void *)find_id(&list [SEND_TARGETS_LIST].list, id)
#define find_initiator_id(id) \
(initiator_t *)(void *)find_id(&list [INITIATOR_LIST].list, id)
#define find_isns_name(name) \
(isns_t *)(void *)find_name(&list [ISNS_LIST].list, name)
#define find_session_name(name) \
(session_t *)(void *)find_name(&list [SESSION_LIST].list, name)
#define find_connection_name(session, name) \
(connection_t *)(void *)find_name(&session->connections, name)
#define find_portal_name(name) \
(portal_t *)(void *)find_name(&list [PORTAL_LIST].list, name)
#define find_target_symname(lst, name) \
(target_t *)(void *)find_name(&list [lst].list, name)
#define find_initiator_name(name) \
(initiator_t *)(void *)find_name(&list [INITIATOR_LIST].list, name)
#define find_isns(sid) \
(isns_t *)(void *)find_sym_id(&list [ISNS_LIST].list, sid)
#define find_session(sid) \
(session_t *)(void *)find_sym_id(&list [SESSION_LIST].list, sid)
#define find_connection(session, sid) \
(connection_t *)(void *)find_sym_id(&session->connections, sid)
#define find_portal(sid) \
(portal_t *)(void *)find_sym_id(&list [PORTAL_LIST].list, sid)
#define find_initiator(sid) \
(initiator_t *)(void *)find_sym_id(&list [INITIATOR_LIST].list, sid)
void get_list(iscsid_get_list_req_t *, iscsid_response_t **, int *);
void search_list(iscsid_search_list_req_t *, iscsid_response_t **, int *);
void get_session_list(iscsid_response_t **, int *);
void get_connection_info(iscsid_get_connection_info_req_t *,
iscsid_response_t **, int *);
void get_connection_list(iscsid_sym_id_t *, iscsid_response_t **, int *);
void add_initiator_portal(iscsid_add_initiator_req_t *, iscsid_response_t **,
int *);
uint32_t remove_initiator_portal(iscsid_sym_id_t *);
void get_initiator_portal(iscsid_sym_id_t *, iscsid_response_t **, int *);
initiator_t *select_initiator(void);
void event_kill_session(uint32_t);
void event_kill_connection(uint32_t, uint32_t);
/* iscsid_targets.c */
void add_target(iscsid_add_target_req_t *, iscsid_response_t **, int *);
uint32_t set_target_options(iscsid_get_set_target_options_t *);
uint32_t set_target_auth(iscsid_set_target_authentication_req_t *);
void add_portal(iscsid_add_portal_req_t *, iscsid_response_t **, int *);
void delete_portal(portal_t *, boolean_t);
void get_target_info(iscsid_list_id_t *, iscsid_response_t **, int *);
void get_portal_info(iscsid_list_id_t *, iscsid_response_t **, int *);
uint32_t remove_target(iscsid_list_id_t *);
uint32_t refresh_targets(iscsid_refresh_req_t *);
target_t *add_discovered_target(uint8_t *, iscsi_portal_address_t *,
iscsi_portal_types_t, uint32_t);
/* iscsid_driverif.c */
boolean_t register_event_handler(void);
void deregister_event_handler(void);
void *event_handler(void *);
uint32_t set_node_name(iscsid_set_node_name_req_t *);
void login(iscsid_login_req_t *, iscsid_response_t *);
void add_connection(iscsid_login_req_t *, iscsid_response_t *);
uint32_t send_targets(uint32_t, uint8_t **, uint32_t *);
uint32_t logout(iscsid_sym_id_t *);
uint32_t remove_connection(iscsid_remove_connection_req_t *);
void get_version(iscsid_response_t **, int *);
/* iscsid_discover.c */
#ifndef ISCSI_MINIMAL
void add_isns_server(iscsid_add_isns_server_req_t *, iscsid_response_t **,
int *);
void get_isns_server(iscsid_sym_id_t *, iscsid_response_t **, int *);
uint32_t refresh_isns_server(uint32_t);
uint32_t remove_isns_server(iscsid_sym_id_t *);
void dereg_all_isns_servers(void);
#endif
#endif /* !_ISCSID_GLOBALS_H */
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