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freebsd-skq/usr.sbin/ctld/ctld.h
trasz a992abf041 Bring in the new iSCSI target and initiator. 
Reviewed by:	ken (parts)
Approved by:	re (delphij)
Sponsored by:	FreeBSD Foundation
2013-09-14 15:29:06 +00:00

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/*-
* Copyright (c) 2012 The FreeBSD Foundation
* All rights reserved.
*
* This software was developed by Edward Tomasz Napierala under sponsorship
* from the FreeBSD Foundation.
*
* 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 AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef CTLD_H
#define CTLD_H
#include <sys/queue.h>
#include <stdbool.h>
#include <libutil.h>
#define DEFAULT_CONFIG_PATH "/etc/ctl.conf"
#define DEFAULT_PIDFILE "/var/run/ctld.pid"
#define DEFAULT_BLOCKSIZE 512
#define MAX_NAME_LEN 223
#define MAX_DATA_SEGMENT_LENGTH (128 * 1024)
#define MAX_BURST_LENGTH 16776192
struct auth {
TAILQ_ENTRY(auth) a_next;
struct auth_group *a_auth_group;
char *a_user;
char *a_secret;
char *a_mutual_user;
char *a_mutual_secret;
};
#define AG_TYPE_UNKNOWN 0
#define AG_TYPE_NO_AUTHENTICATION 1
#define AG_TYPE_CHAP 2
#define AG_TYPE_CHAP_MUTUAL 3
struct auth_group {
TAILQ_ENTRY(auth_group) ag_next;
struct conf *ag_conf;
char *ag_name;
struct target *ag_target;
int ag_type;
TAILQ_HEAD(, auth) ag_auths;
};
struct portal {
TAILQ_ENTRY(portal) p_next;
struct portal_group *p_portal_group;
bool p_iser;
char *p_listen;
struct addrinfo *p_ai;
TAILQ_HEAD(, target) p_targets;
int p_socket;
};
struct portal_group {
TAILQ_ENTRY(portal_group) pg_next;
struct conf *pg_conf;
char *pg_name;
struct auth_group *pg_discovery_auth_group;
bool pg_unassigned;
TAILQ_HEAD(, portal) pg_portals;
uint16_t pg_tag;
};
struct lun_option {
TAILQ_ENTRY(lun_option) lo_next;
struct lun *lo_lun;
char *lo_name;
char *lo_value;
};
struct lun {
TAILQ_ENTRY(lun) l_next;
TAILQ_HEAD(, lun_option) l_options;
struct target *l_target;
int l_lun;
char *l_backend;
int l_blocksize;
char *l_device_id;
char *l_path;
char *l_serial;
int64_t l_size;
int l_ctl_lun;
};
struct target {
TAILQ_ENTRY(target) t_next;
TAILQ_HEAD(, lun) t_luns;
struct conf *t_conf;
struct auth_group *t_auth_group;
struct portal_group *t_portal_group;
char *t_iqn;
char *t_alias;
};
struct conf {
char *conf_pidfile_path;
TAILQ_HEAD(, target) conf_targets;
TAILQ_HEAD(, auth_group) conf_auth_groups;
TAILQ_HEAD(, portal_group) conf_portal_groups;
int conf_debug;
int conf_timeout;
int conf_maxproc;
uint16_t conf_last_portal_group_tag;
struct pidfh *conf_pidfh;
};
#define CONN_SESSION_TYPE_NONE 0
#define CONN_SESSION_TYPE_DISCOVERY 1
#define CONN_SESSION_TYPE_NORMAL 2
#define CONN_DIGEST_NONE 0
#define CONN_DIGEST_CRC32C 1
struct connection {
struct portal *conn_portal;
struct target *conn_target;
int conn_socket;
int conn_session_type;
char *conn_initiator_name;
char *conn_initiator_addr;
char *conn_initiator_alias;
uint32_t conn_cmdsn;
uint32_t conn_statsn;
size_t conn_max_data_segment_length;
size_t conn_max_burst_length;
int conn_immediate_data;
int conn_header_digest;
int conn_data_digest;
};
struct pdu {
struct connection *pdu_connection;
struct iscsi_bhs *pdu_bhs;
char *pdu_data;
size_t pdu_data_len;
};
#define KEYS_MAX 1024
struct keys {
char *keys_names[KEYS_MAX];
char *keys_values[KEYS_MAX];
char *keys_data;
size_t keys_data_len;
};
struct conf *conf_new(void);
struct conf *conf_new_from_file(const char *path);
struct conf *conf_new_from_kernel(void);
void conf_delete(struct conf *conf);
int conf_verify(struct conf *conf);
struct auth_group *auth_group_new(struct conf *conf, const char *name);
void auth_group_delete(struct auth_group *ag);
struct auth_group *auth_group_find(struct conf *conf, const char *name);
const struct auth *auth_new_chap(struct auth_group *ag,
const char *user, const char *secret);
const struct auth *auth_new_chap_mutual(struct auth_group *ag,
const char *user, const char *secret,
const char *user2, const char *secret2);
const struct auth *auth_find(struct auth_group *ag,
const char *user);
struct portal_group *portal_group_new(struct conf *conf, const char *name);
void portal_group_delete(struct portal_group *pg);
struct portal_group *portal_group_find(struct conf *conf, const char *name);
int portal_group_add_listen(struct portal_group *pg,
const char *listen, bool iser);
struct target *target_new(struct conf *conf, const char *iqn);
void target_delete(struct target *target);
struct target *target_find(struct conf *conf,
const char *iqn);
struct lun *lun_new(struct target *target, int lun_id);
void lun_delete(struct lun *lun);
struct lun *lun_find(struct target *target, int lun_id);
void lun_set_backend(struct lun *lun, const char *value);
void lun_set_blocksize(struct lun *lun, size_t value);
void lun_set_device_id(struct lun *lun, const char *value);
void lun_set_path(struct lun *lun, const char *value);
void lun_set_serial(struct lun *lun, const char *value);
void lun_set_size(struct lun *lun, size_t value);
void lun_set_ctl_lun(struct lun *lun, uint32_t value);
struct lun_option *lun_option_new(struct lun *lun,
const char *name, const char *value);
void lun_option_delete(struct lun_option *clo);
struct lun_option *lun_option_find(struct lun *lun, const char *name);
void lun_option_set(struct lun_option *clo,
const char *value);
void kernel_init(void);
int kernel_lun_add(struct lun *lun);
int kernel_lun_resize(struct lun *lun);
int kernel_lun_remove(struct lun *lun);
void kernel_handoff(struct connection *conn);
int kernel_port_on(void);
int kernel_port_off(void);
void kernel_capsicate(void);
/*
* ICL_KERNEL_PROXY
*/
void kernel_listen(struct addrinfo *ai, bool iser);
int kernel_accept(void);
void kernel_send(struct pdu *pdu);
void kernel_receive(struct pdu *pdu);
struct keys *keys_new(void);
void keys_delete(struct keys *keys);
void keys_load(struct keys *keys, const struct pdu *pdu);
void keys_save(struct keys *keys, struct pdu *pdu);
const char *keys_find(struct keys *keys, const char *name);
int keys_find_int(struct keys *keys, const char *name);
void keys_add(struct keys *keys,
const char *name, const char *value);
void keys_add_int(struct keys *keys,
const char *name, int value);
struct pdu *pdu_new(struct connection *conn);
struct pdu *pdu_new_response(struct pdu *request);
void pdu_delete(struct pdu *pdu);
void pdu_receive(struct pdu *request);
void pdu_send(struct pdu *response);
void login(struct connection *conn);
void discovery(struct connection *conn);
void log_init(int level);
void log_set_peer_name(const char *name);
void log_set_peer_addr(const char *addr);
void log_err(int, const char *, ...)
__dead2 __printf0like(2, 3);
void log_errx(int, const char *, ...)
__dead2 __printf0like(2, 3);
void log_warn(const char *, ...) __printf0like(1, 2);
void log_warnx(const char *, ...) __printflike(1, 2);
void log_debugx(const char *, ...) __printf0like(1, 2);
char *checked_strdup(const char *);
bool valid_iscsi_name(const char *name);
bool timed_out(void);
#endif /* !CTLD_H */
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