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 * $FreeBSD$ 30 */ 31 32 #ifndef CTL_FRONTEND_ISCSI_H 33 #define CTL_FRONTEND_ISCSI_H 34 35 struct cfiscsi_target { 36 TAILQ_ENTRY(cfiscsi_target) ct_next; 37 int ct_luns[CTL_MAX_LUNS]; 38 struct cfiscsi_softc *ct_softc; 39 volatile u_int ct_refcount; 40 char ct_name[CTL_ISCSI_NAME_LEN]; 41 char ct_alias[CTL_ISCSI_ALIAS_LEN]; 42 }; 43 44 struct cfiscsi_data_wait { 45 TAILQ_ENTRY(cfiscsi_data_wait) cdw_next; 46 union ctl_io *cdw_ctl_io; 47 uint32_t cdw_target_transfer_tag; 48 uint32_t cdw_initiator_task_tag; 49 int cdw_sg_index; 50 char *cdw_sg_addr; 51 size_t cdw_sg_len; 52 }; 53 54 #define CFISCSI_SESSION_STATE_INVALID 0 55 #define CFISCSI_SESSION_STATE_BHS 1 56 #define CFISCSI_SESSION_STATE_AHS 2 57 #define CFISCSI_SESSION_STATE_HEADER_DIGEST 3 58 #define CFISCSI_SESSION_STATE_DATA 4 59 #define CFISCSI_SESSION_STATE_DATA_DIGEST 5 60 61 struct cfiscsi_session { 62 TAILQ_ENTRY(cfiscsi_session) cs_next; 63 struct mtx cs_lock; 64 struct icl_conn *cs_conn; 65 uint32_t cs_cmdsn; 66 uint32_t cs_statsn; 67 uint32_t cs_target_transfer_tag; 68 volatile u_int cs_outstanding_ctl_pdus; 69 TAILQ_HEAD(, cfiscsi_data_wait) cs_waiting_for_data_out; 70 struct cfiscsi_target *cs_target; 71 struct callout cs_callout; 72 int cs_timeout; 73 int cs_portal_group_tag; 74 struct cv cs_maintenance_cv; 75 int cs_terminating; 76 size_t cs_max_data_segment_length; 77 size_t cs_max_burst_length; 78 bool cs_immediate_data; 79 char cs_initiator_name[CTL_ISCSI_NAME_LEN]; 80 char cs_initiator_addr[CTL_ISCSI_ADDR_LEN]; 81 char cs_initiator_alias[CTL_ISCSI_ALIAS_LEN]; 82 unsigned int cs_id; 83 int cs_ctl_initid; 84 #ifdef ICL_KERNEL_PROXY 85 bool cs_login_phase; 86 bool cs_waiting_for_ctld; 87 struct cv cs_login_cv; 88 struct icl_pdu *cs_login_pdu; 89 #endif 90 }; 91 92 #ifdef ICL_KERNEL_PROXY 93 struct icl_listen; 94 #endif 95 96 struct cfiscsi_softc { 97 struct ctl_frontend fe; 98 struct mtx lock; 99 char port_name[32]; 100 int online; 101 unsigned int last_session_id; 102 TAILQ_HEAD(, cfiscsi_target) targets; 103 TAILQ_HEAD(, cfiscsi_session) sessions; 104 char ctl_initids[CTL_MAX_INIT_PER_PORT]; 105 int max_initiators; 106 #ifdef ICL_KERNEL_PROXY 107 struct icl_listen *listener; 108 struct cv accept_cv; 109 #endif 110 }; 111 112 #endif /* !CTL_FRONTEND_ISCSI_H */ 113