1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2012 The FreeBSD Foundation 5 * 6 * This software was developed by Edward Tomasz Napierala under sponsorship 7 * from the FreeBSD Foundation. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31 #ifndef CTL_FRONTEND_ISCSI_H 32 #define CTL_FRONTEND_ISCSI_H 33 34 #define CFISCSI_TARGET_STATE_INVALID 0 35 #define CFISCSI_TARGET_STATE_ACTIVE 1 36 #define CFISCSI_TARGET_STATE_DYING 2 37 38 struct cfiscsi_target { 39 TAILQ_ENTRY(cfiscsi_target) ct_next; 40 struct cfiscsi_softc *ct_softc; 41 volatile u_int ct_refcount; 42 char ct_name[CTL_ISCSI_NAME_LEN]; 43 char ct_alias[CTL_ISCSI_ALIAS_LEN]; 44 uint16_t ct_tag; 45 int ct_state; 46 int ct_online; 47 int ct_target_id; 48 struct ctl_port ct_port; 49 }; 50 51 struct 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 uint32_t cdw_r2t_end; 60 uint32_t cdw_datasn; 61 void *cdw_icl_prv; 62 }; 63 64 #define CFISCSI_SESSION_STATE_INVALID 0 65 #define CFISCSI_SESSION_STATE_BHS 1 66 #define CFISCSI_SESSION_STATE_AHS 2 67 #define CFISCSI_SESSION_STATE_HEADER_DIGEST 3 68 #define CFISCSI_SESSION_STATE_DATA 4 69 #define CFISCSI_SESSION_STATE_DATA_DIGEST 5 70 71 struct cfiscsi_session { 72 TAILQ_ENTRY(cfiscsi_session) cs_next; 73 struct mtx cs_lock; 74 struct icl_conn *cs_conn; 75 uint32_t cs_cmdsn; 76 uint32_t cs_statsn; 77 uint32_t cs_target_transfer_tag; 78 volatile u_int cs_outstanding_ctl_pdus; 79 TAILQ_HEAD(, cfiscsi_data_wait) cs_waiting_for_data_out; 80 struct cfiscsi_target *cs_target; 81 struct callout cs_callout; 82 int cs_timeout; 83 struct cv cs_maintenance_cv; 84 bool cs_terminating; 85 bool cs_terminating_tasks; 86 bool cs_handoff_in_progress; 87 bool cs_tasks_aborted; 88 int cs_max_burst_length; 89 int cs_first_burst_length; 90 bool cs_immediate_data; 91 char cs_initiator_name[CTL_ISCSI_NAME_LEN]; 92 char cs_initiator_addr[CTL_ISCSI_ADDR_LEN]; 93 char cs_initiator_alias[CTL_ISCSI_ALIAS_LEN]; 94 char cs_initiator_isid[6]; 95 char cs_initiator_id[CTL_ISCSI_NAME_LEN + 5 + 6 + 1]; 96 unsigned int cs_id; 97 int cs_ctl_initid; 98 #ifdef ICL_KERNEL_PROXY 99 struct sockaddr *cs_initiator_sa; 100 int cs_portal_id; 101 bool cs_login_phase; 102 bool cs_waiting_for_ctld; 103 struct cv cs_login_cv; 104 struct icl_pdu *cs_login_pdu; 105 #endif 106 }; 107 108 #ifdef ICL_KERNEL_PROXY 109 struct icl_listen; 110 #endif 111 112 struct cfiscsi_softc { 113 struct mtx lock; 114 char port_name[32]; 115 int online; 116 int last_target_id; 117 unsigned int last_session_id; 118 TAILQ_HEAD(, cfiscsi_target) targets; 119 TAILQ_HEAD(, cfiscsi_session) sessions; 120 struct cv sessions_cv; 121 #ifdef ICL_KERNEL_PROXY 122 struct icl_listen *listener; 123 struct cv accept_cv; 124 #endif 125 }; 126 127 #endif /* !CTL_FRONTEND_ISCSI_H */ 128