diff options
Diffstat (limited to 'sys/dev/iscsi/iscsi.h')
| -rw-r--r-- | sys/dev/iscsi/iscsi.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/sys/dev/iscsi/iscsi.h b/sys/dev/iscsi/iscsi.h new file mode 100644 index 000000000000..dd78852b4716 --- /dev/null +++ b/sys/dev/iscsi/iscsi.h @@ -0,0 +1,135 @@ +/*- + * 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 ISCSI_H +#define ISCSI_H + +struct iscsi_softc; +struct icl_conn; + +#define ISCSI_NAME_LEN 224 /* 223 bytes, by RFC 3720, + '\0' */ +#define ISCSI_ADDR_LEN 47 /* INET6_ADDRSTRLEN + '\0' */ +#define ISCSI_SECRET_LEN 17 /* 16 + '\0' */ + +struct iscsi_outstanding { + TAILQ_ENTRY(iscsi_outstanding) io_next; + union ccb *io_ccb; + size_t io_received; + uint32_t io_initiator_task_tag; + uint32_t io_datasn; +}; + +struct iscsi_session { + TAILQ_ENTRY(iscsi_session) is_next; + + struct icl_conn *is_conn; + struct mtx is_lock; + + uint32_t is_statsn; + uint32_t is_cmdsn; + uint32_t is_expcmdsn; + uint32_t is_maxcmdsn; + uint32_t is_initiator_task_tag; + int is_header_digest; + int is_data_digest; + int is_initial_r2t; + size_t is_max_burst_length; + size_t is_first_burst_length; + uint8_t is_isid[6]; + bool is_immediate_data; + size_t is_max_data_segment_length; + char is_target_alias[ISCSI_ALIAS_LEN]; + + TAILQ_HEAD(, iscsi_outstanding) is_outstanding; + TAILQ_HEAD(, icl_pdu) is_postponed; + + struct callout is_callout; + unsigned int is_timeout; + + /* + * XXX: This could be rewritten using a single variable, + * but somehow it results in uglier code. + */ + /* + * We're waiting for iscsid(8); after iscsid_timeout + * expires, kernel will wake up an iscsid(8) to handle + * the session. + */ + bool is_waiting_for_iscsid; + + /* + * Some iscsid(8) instance is handling the session; + * after login_timeout expires, kernel will wake up + * another iscsid(8) to handle the session. + */ + bool is_login_phase; + + /* + * We're in the process of removing the iSCSI session. + */ + bool is_terminating; + + /* + * We're waiting for the maintenance thread to do some + * reconnection tasks. + */ + bool is_reconnecting; + + bool is_connected; + + struct cam_devq *is_devq; + struct cam_sim *is_sim; + struct cam_path *is_path; + struct cv is_maintenance_cv; + struct iscsi_softc *is_softc; + unsigned int is_id; + struct iscsi_session_conf is_conf; + bool is_simq_frozen; + + char is_reason[ISCSI_REASON_LEN]; + +#ifdef ICL_KERNEL_PROXY + struct cv is_login_cv;; + struct icl_pdu *is_login_pdu; +#endif +}; + +struct iscsi_softc { + device_t sc_dev; + struct sx sc_lock; + struct cdev *sc_cdev; + TAILQ_HEAD(, iscsi_session) sc_sessions; + struct cv sc_cv; + unsigned int sc_last_session_id; + eventhandler_tag sc_shutdown_eh; +}; + +#endif /* !ISCSI_H */ |