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 #define CFISCSI_TARGET_STATE_INVALID 0 36 #define CFISCSI_TARGET_STATE_ACTIVE 1 37 #define CFISCSI_TARGET_STATE_DYING 2 38 39 struct cfiscsi_target { 40 TAILQ_ENTRY(cfiscsi_target) ct_next; 41 struct cfiscsi_softc *ct_softc; 42 volatile u_int ct_refcount; 43 char ct_name[CTL_ISCSI_NAME_LEN]; 44 char ct_alias[CTL_ISCSI_ALIAS_LEN]; 45 uint16_t ct_tag; 46 int ct_state; 47 int ct_online; 48 int ct_target_id; 49 struct ctl_port ct_port; 50 }; 51 52 struct cfiscsi_data_wait { 53 TAILQ_ENTRY(cfiscsi_data_wait) cdw_next; 54 union ctl_io *cdw_ctl_io; 55 uint32_t cdw_target_transfer_tag; 56 uint32_t cdw_initiator_task_tag; 57 int cdw_sg_index; 58 char *cdw_sg_addr; 59 size_t cdw_sg_len; 60 uint32_t cdw_r2t_end; 61 uint32_t cdw_datasn; 62 void *cdw_icl_prv; 63 }; 64 65 #define CFISCSI_SESSION_STATE_INVALID 0 66 #define CFISCSI_SESSION_STATE_BHS 1 67 #define CFISCSI_SESSION_STATE_AHS 2 68 #define CFISCSI_SESSION_STATE_HEADER_DIGEST 3 69 #define CFISCSI_SESSION_STATE_DATA 4 70 #define CFISCSI_SESSION_STATE_DATA_DIGEST 5 71 72 struct cfiscsi_session { 73 TAILQ_ENTRY(cfiscsi_session) cs_next; 74 struct mtx cs_lock; 75 struct icl_conn *cs_conn; 76 uint32_t cs_cmdsn; 77 uint32_t cs_statsn; 78 uint32_t cs_target_transfer_tag; 79 volatile u_int cs_outstanding_ctl_pdus; 80 TAILQ_HEAD(, cfiscsi_data_wait) cs_waiting_for_data_out; 81 struct cfiscsi_target *cs_target; 82 struct callout cs_callout; 83 int cs_timeout; 84 struct cv cs_maintenance_cv; 85 bool cs_terminating; 86 bool cs_tasks_aborted; 87 int cs_max_recv_data_segment_length; 88 int cs_max_send_data_segment_length; 89 int cs_max_burst_length; 90 int cs_first_burst_length; 91 bool cs_immediate_data; 92 char cs_initiator_name[CTL_ISCSI_NAME_LEN]; 93 char cs_initiator_addr[CTL_ISCSI_ADDR_LEN]; 94 char cs_initiator_alias[CTL_ISCSI_ALIAS_LEN]; 95 char cs_initiator_isid[6]; 96 char cs_initiator_id[CTL_ISCSI_NAME_LEN + 5 + 6 + 1]; 97 unsigned int cs_id; 98 int cs_ctl_initid; 99 #ifdef ICL_KERNEL_PROXY 100 struct sockaddr *cs_initiator_sa; 101 int cs_portal_id; 102 bool cs_login_phase; 103 bool cs_waiting_for_ctld; 104 struct cv cs_login_cv; 105 struct icl_pdu *cs_login_pdu; 106 #endif 107 }; 108 109 #ifdef ICL_KERNEL_PROXY 110 struct icl_listen; 111 #endif 112 113 struct cfiscsi_softc { 114 struct mtx lock; 115 char port_name[32]; 116 int online; 117 int last_target_id; 118 unsigned int last_session_id; 119 TAILQ_HEAD(, cfiscsi_target) targets; 120 TAILQ_HEAD(, cfiscsi_session) sessions; 121 struct cv sessions_cv; 122 #ifdef ICL_KERNEL_PROXY 123 struct icl_listen *listener; 124 struct cv accept_cv; 125 #endif 126 }; 127 128 #endif /* !CTL_FRONTEND_ISCSI_H */ 129