Bring in the new iSCSI target and initiator.

Reviewed by:	ken (parts)
Approved by:	re (delphij)
Sponsored by:	FreeBSD Foundation

1 files changed, 277 insertions, 0 deletions

diff --git a/usr.sbin/ctld/ctld.h b/usr.sbin/ctld/ctld.h
new file mode 100644
index 0000000..3557978
--- /dev/null
+++ b/usr.sbin/ctld/ctld.h
@@ -0,0 +1,277 @@
+/*-
+ * 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 */