1255570Strasz/*- 2255570Strasz * Copyright (c) 2012 The FreeBSD Foundation 3255570Strasz * All rights reserved. 4255570Strasz * 5255570Strasz * This software was developed by Edward Tomasz Napierala under sponsorship 6255570Strasz * from the FreeBSD Foundation. 7255570Strasz * 8255570Strasz * Redistribution and use in source and binary forms, with or without 9255570Strasz * modification, are permitted provided that the following conditions 10255570Strasz * are met: 11255570Strasz * 1. Redistributions of source code must retain the above copyright 12255570Strasz * notice, this list of conditions and the following disclaimer. 13255570Strasz * 2. Redistributions in binary form must reproduce the above copyright 14255570Strasz * notice, this list of conditions and the following disclaimer in the 15255570Strasz * documentation and/or other materials provided with the distribution. 16255570Strasz * 17255570Strasz * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18255570Strasz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19255570Strasz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20255570Strasz * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21255570Strasz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22255570Strasz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23255570Strasz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24255570Strasz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25255570Strasz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26255570Strasz * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27255570Strasz * SUCH DAMAGE. 28255570Strasz * 29255570Strasz * $FreeBSD$ 30255570Strasz */ 31255570Strasz 32255570Strasz#ifndef ISCSI_H 33255570Strasz#define ISCSI_H 34255570Strasz 35255570Straszstruct iscsi_softc; 36255570Straszstruct icl_conn; 37255570Strasz 38255570Strasz#define ISCSI_NAME_LEN 224 /* 223 bytes, by RFC 3720, + '\0' */ 39255570Strasz#define ISCSI_ADDR_LEN 47 /* INET6_ADDRSTRLEN + '\0' */ 40255570Strasz#define ISCSI_SECRET_LEN 17 /* 16 + '\0' */ 41255570Strasz 42255570Straszstruct iscsi_outstanding { 43255570Strasz TAILQ_ENTRY(iscsi_outstanding) io_next; 44255570Strasz union ccb *io_ccb; 45255570Strasz size_t io_received; 46255570Strasz uint32_t io_initiator_task_tag; 47255570Strasz uint32_t io_datasn; 48278397Strasz void *io_icl_prv; 49255570Strasz}; 50255570Strasz 51255570Straszstruct iscsi_session { 52255570Strasz TAILQ_ENTRY(iscsi_session) is_next; 53255570Strasz 54255570Strasz struct icl_conn *is_conn; 55255570Strasz struct mtx is_lock; 56255570Strasz 57255570Strasz uint32_t is_statsn; 58255570Strasz uint32_t is_cmdsn; 59255570Strasz uint32_t is_expcmdsn; 60255570Strasz uint32_t is_maxcmdsn; 61255570Strasz uint32_t is_initiator_task_tag; 62255570Strasz int is_header_digest; 63255570Strasz int is_data_digest; 64255570Strasz int is_initial_r2t; 65255570Strasz size_t is_max_burst_length; 66255570Strasz size_t is_first_burst_length; 67255570Strasz uint8_t is_isid[6]; 68268326Smav uint16_t is_tsih; 69255570Strasz bool is_immediate_data; 70255570Strasz size_t is_max_data_segment_length; 71255570Strasz char is_target_alias[ISCSI_ALIAS_LEN]; 72255570Strasz 73255570Strasz TAILQ_HEAD(, iscsi_outstanding) is_outstanding; 74264109Strasz STAILQ_HEAD(, icl_pdu) is_postponed; 75255570Strasz 76255570Strasz struct callout is_callout; 77255570Strasz unsigned int is_timeout; 78255570Strasz 79255570Strasz /* 80255570Strasz * XXX: This could be rewritten using a single variable, 81255570Strasz * but somehow it results in uglier code. 82255570Strasz */ 83255570Strasz /* 84255570Strasz * We're waiting for iscsid(8); after iscsid_timeout 85255570Strasz * expires, kernel will wake up an iscsid(8) to handle 86255570Strasz * the session. 87255570Strasz */ 88255570Strasz bool is_waiting_for_iscsid; 89255570Strasz 90255570Strasz /* 91255570Strasz * Some iscsid(8) instance is handling the session; 92255570Strasz * after login_timeout expires, kernel will wake up 93255570Strasz * another iscsid(8) to handle the session. 94255570Strasz */ 95255570Strasz bool is_login_phase; 96255570Strasz 97255570Strasz /* 98255570Strasz * We're in the process of removing the iSCSI session. 99255570Strasz */ 100255570Strasz bool is_terminating; 101255570Strasz 102255570Strasz /* 103255570Strasz * We're waiting for the maintenance thread to do some 104255570Strasz * reconnection tasks. 105255570Strasz */ 106255570Strasz bool is_reconnecting; 107255570Strasz 108255570Strasz bool is_connected; 109255570Strasz 110255570Strasz struct cam_devq *is_devq; 111255570Strasz struct cam_sim *is_sim; 112255570Strasz struct cam_path *is_path; 113255570Strasz struct cv is_maintenance_cv; 114255570Strasz struct iscsi_softc *is_softc; 115255570Strasz unsigned int is_id; 116255570Strasz struct iscsi_session_conf is_conf; 117255570Strasz bool is_simq_frozen; 118255570Strasz 119255570Strasz char is_reason[ISCSI_REASON_LEN]; 120255570Strasz 121255570Strasz#ifdef ICL_KERNEL_PROXY 122295476Strasz struct cv is_login_cv; 123255570Strasz struct icl_pdu *is_login_pdu; 124255570Strasz#endif 125255570Strasz}; 126255570Strasz 127255570Straszstruct iscsi_softc { 128255570Strasz device_t sc_dev; 129255570Strasz struct sx sc_lock; 130255570Strasz struct cdev *sc_cdev; 131255570Strasz TAILQ_HEAD(, iscsi_session) sc_sessions; 132255570Strasz struct cv sc_cv; 133255570Strasz unsigned int sc_last_session_id; 134293659Ssmh eventhandler_tag sc_shutdown_pre_eh; 135293659Ssmh eventhandler_tag sc_shutdown_post_eh; 136255570Strasz}; 137255570Strasz 138255570Strasz#endif /* !ISCSI_H */ 139