Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/cam/ctl/ctl_frontend_iscsi.h
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 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 * $FreeBSD$ 31 */ 32 33 #ifndef CTL_FRONTEND_ISCSI_H 34 #define CTL_FRONTEND_ISCSI_H 35 36 #define CFISCSI_TARGET_STATE_INVALID 0 37 #define CFISCSI_TARGET_STATE_ACTIVE 1 38 #define CFISCSI_TARGET_STATE_DYING 2 39 40 struct cfiscsi_target { 41 TAILQ_ENTRY(cfiscsi_target) ct_next; 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 uint16_t ct_tag; 47 int ct_state; 48 int ct_online; 49 int ct_target_id; 50 struct ctl_port ct_port; 51 }; 52 53 struct cfiscsi_data_wait { 54 TAILQ_ENTRY(cfiscsi_data_wait) cdw_next; 55 union ctl_io *cdw_ctl_io; 56 uint32_t cdw_target_transfer_tag; 57 uint32_t cdw_initiator_task_tag; 58 int cdw_sg_index; 59 char *cdw_sg_addr; 60 size_t cdw_sg_len; 61 uint32_t cdw_r2t_end; 62 uint32_t cdw_datasn; 63 void *cdw_icl_prv; 64 }; 65 66 #define CFISCSI_SESSION_STATE_INVALID 0 67 #define CFISCSI_SESSION_STATE_BHS 1 68 #define CFISCSI_SESSION_STATE_AHS 2 69 #define CFISCSI_SESSION_STATE_HEADER_DIGEST 3 70 #define CFISCSI_SESSION_STATE_DATA 4 71 #define CFISCSI_SESSION_STATE_DATA_DIGEST 5 72 73 struct cfiscsi_session { 74 TAILQ_ENTRY(cfiscsi_session) cs_next; 75 struct mtx cs_lock; 76 struct icl_conn *cs_conn; 77 uint32_t cs_cmdsn; 78 uint32_t cs_statsn; 79 uint32_t cs_target_transfer_tag; 80 volatile u_int cs_outstanding_ctl_pdus; 81 TAILQ_HEAD(, cfiscsi_data_wait) cs_waiting_for_data_out; 82 struct cfiscsi_target *cs_target; 83 struct callout cs_callout; 84 int cs_timeout; 85 struct cv cs_maintenance_cv; 86 bool cs_terminating; 87 bool cs_terminating_tasks; 88 bool cs_handoff_in_progress; 89 bool cs_tasks_aborted; 90 int cs_max_burst_length; 91 int cs_first_burst_length; 92 bool cs_immediate_data; 93 char cs_initiator_name[CTL_ISCSI_NAME_LEN]; 94 char cs_initiator_addr[CTL_ISCSI_ADDR_LEN]; 95 char cs_initiator_alias[CTL_ISCSI_ALIAS_LEN]; 96 char cs_initiator_isid[6]; 97 char cs_initiator_id[CTL_ISCSI_NAME_LEN + 5 + 6 + 1]; 98 unsigned int cs_id; 99 int cs_ctl_initid; 100 #ifdef ICL_KERNEL_PROXY 101 struct sockaddr *cs_initiator_sa; 102 int cs_portal_id; 103 bool cs_login_phase; 104 bool cs_waiting_for_ctld; 105 struct cv cs_login_cv; 106 struct icl_pdu *cs_login_pdu; 107 #endif 108 }; 109 110 #ifdef ICL_KERNEL_PROXY 111 struct icl_listen; 112 #endif 113 114 struct cfiscsi_softc { 115 struct mtx lock; 116 char port_name[32]; 117 int online; 118 int last_target_id; 119 unsigned int last_session_id; 120 TAILQ_HEAD(, cfiscsi_target) targets; 121 TAILQ_HEAD(, cfiscsi_session) sessions; 122 struct cv sessions_cv; 123 #ifdef ICL_KERNEL_PROXY 124 struct icl_listen *listener; 125 struct cv accept_cv; 126 #endif 127 }; 128 129 #endif /* !CTL_FRONTEND_ISCSI_H */
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