ctl_frontend_iscsi.h revision 268682
1/*- 2 * Copyright (c) 2012 The FreeBSD Foundation 3 * All rights reserved. 4 * 5 * This software was developed by Edward Tomasz Napierala under sponsorship 6 * from the FreeBSD Foundation. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_iscsi.h 268682 2014-07-15 17:05:11Z mav $ 30 */ 31 32#ifndef CTL_FRONTEND_ISCSI_H 33#define CTL_FRONTEND_ISCSI_H 34 35#define CFISCSI_TARGET_STATE_INVALID 0 36#define CFISCSI_TARGET_STATE_ACTIVE 1 37#define CFISCSI_TARGET_STATE_DYING 2 38 39struct cfiscsi_target { 40 TAILQ_ENTRY(cfiscsi_target) ct_next; 41 int ct_luns[CTL_MAX_LUNS]; 42 struct cfiscsi_softc *ct_softc; 43 volatile u_int ct_refcount; 44 char ct_name[CTL_ISCSI_NAME_LEN]; 45 char ct_alias[CTL_ISCSI_ALIAS_LEN]; 46 int ct_state; 47 int ct_online; 48 struct ctl_port ct_port; 49}; 50 51struct cfiscsi_data_wait { 52 TAILQ_ENTRY(cfiscsi_data_wait) cdw_next; 53 union ctl_io *cdw_ctl_io; 54 uint32_t cdw_target_transfer_tag; 55 uint32_t cdw_initiator_task_tag; 56 int cdw_sg_index; 57 char *cdw_sg_addr; 58 size_t cdw_sg_len; 59}; 60 61#define CFISCSI_SESSION_STATE_INVALID 0 62#define CFISCSI_SESSION_STATE_BHS 1 63#define CFISCSI_SESSION_STATE_AHS 2 64#define CFISCSI_SESSION_STATE_HEADER_DIGEST 3 65#define CFISCSI_SESSION_STATE_DATA 4 66#define CFISCSI_SESSION_STATE_DATA_DIGEST 5 67 68struct cfiscsi_session { 69 TAILQ_ENTRY(cfiscsi_session) cs_next; 70 struct mtx cs_lock; 71 struct icl_conn *cs_conn; 72 uint32_t cs_cmdsn; 73 uint32_t cs_statsn; 74 uint32_t cs_target_transfer_tag; 75 volatile u_int cs_outstanding_ctl_pdus; 76 TAILQ_HEAD(, cfiscsi_data_wait) cs_waiting_for_data_out; 77 struct cfiscsi_target *cs_target; 78 struct callout cs_callout; 79 int cs_timeout; 80 int cs_portal_group_tag; 81 struct cv cs_maintenance_cv; 82 bool cs_terminating; 83 size_t cs_max_data_segment_length; 84 size_t cs_max_burst_length; 85 bool cs_immediate_data; 86 char cs_initiator_name[CTL_ISCSI_NAME_LEN]; 87 char cs_initiator_addr[CTL_ISCSI_ADDR_LEN]; 88 char cs_initiator_alias[CTL_ISCSI_ALIAS_LEN]; 89 unsigned int cs_id; 90 int cs_ctl_initid; 91#ifdef ICL_KERNEL_PROXY 92 struct sockaddr *cs_initiator_sa; 93 int cs_portal_id; 94 bool cs_login_phase; 95 bool cs_waiting_for_ctld; 96 struct cv cs_login_cv; 97 struct icl_pdu *cs_login_pdu; 98#endif 99}; 100 101#ifdef ICL_KERNEL_PROXY 102struct icl_listen; 103#endif 104 105struct cfiscsi_softc { 106 struct mtx lock; 107 char port_name[32]; 108 int online; 109 unsigned int last_session_id; 110 TAILQ_HEAD(, cfiscsi_target) targets; 111 TAILQ_HEAD(, cfiscsi_session) sessions; 112 char ctl_initids[CTL_MAX_INIT_PER_PORT]; 113 int max_initiators; 114#ifdef ICL_KERNEL_PROXY 115 struct icl_listen *listener; 116 struct cv accept_cv; 117#endif 118}; 119 120#endif /* !CTL_FRONTEND_ISCSI_H */ 121