1a6d42e7dSPeter Dunlap /* 2a6d42e7dSPeter Dunlap * CDDL HEADER START 3a6d42e7dSPeter Dunlap * 4a6d42e7dSPeter Dunlap * The contents of this file are subject to the terms of the 5a6d42e7dSPeter Dunlap * Common Development and Distribution License (the "License"). 6a6d42e7dSPeter Dunlap * You may not use this file except in compliance with the License. 7a6d42e7dSPeter Dunlap * 8a6d42e7dSPeter Dunlap * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9a6d42e7dSPeter Dunlap * or http://www.opensolaris.org/os/licensing. 10a6d42e7dSPeter Dunlap * See the License for the specific language governing permissions 11a6d42e7dSPeter Dunlap * and limitations under the License. 12a6d42e7dSPeter Dunlap * 13a6d42e7dSPeter Dunlap * When distributing Covered Code, include this CDDL HEADER in each 14a6d42e7dSPeter Dunlap * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15a6d42e7dSPeter Dunlap * If applicable, add the following below this CDDL HEADER, with the 16a6d42e7dSPeter Dunlap * fields enclosed by brackets "[]" replaced with your own identifying 17a6d42e7dSPeter Dunlap * information: Portions Copyright [yyyy] [name of copyright owner] 18a6d42e7dSPeter Dunlap * 19a6d42e7dSPeter Dunlap * CDDL HEADER END 20a6d42e7dSPeter Dunlap */ 21a6d42e7dSPeter Dunlap /* 22*30e7468fSPeter Dunlap * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23a6d42e7dSPeter Dunlap * Use is subject to license terms. 24a6d42e7dSPeter Dunlap */ 25a6d42e7dSPeter Dunlap 26a6d42e7dSPeter Dunlap #include <sys/cpuvar.h> 27a6d42e7dSPeter Dunlap #include <sys/conf.h> 28a6d42e7dSPeter Dunlap #include <sys/file.h> 29a6d42e7dSPeter Dunlap #include <sys/ddi.h> 30a6d42e7dSPeter Dunlap #include <sys/sunddi.h> 31a6d42e7dSPeter Dunlap #include <sys/modctl.h> 32a6d42e7dSPeter Dunlap 33a6d42e7dSPeter Dunlap #include <sys/socket.h> 34a6d42e7dSPeter Dunlap #include <sys/strsubr.h> 35a6d42e7dSPeter Dunlap #include <sys/sysmacros.h> 36a6d42e7dSPeter Dunlap 37a6d42e7dSPeter Dunlap #include <sys/socketvar.h> 38a6d42e7dSPeter Dunlap #include <netinet/in.h> 39a6d42e7dSPeter Dunlap 40a6d42e7dSPeter Dunlap #include <sys/idm/idm.h> 41a6d42e7dSPeter Dunlap #include <sys/idm/idm_so.h> 42a6d42e7dSPeter Dunlap 43a6d42e7dSPeter Dunlap #define IDM_NAME_VERSION "iSCSI Data Mover" 44a6d42e7dSPeter Dunlap 45a6d42e7dSPeter Dunlap extern struct mod_ops mod_miscops; 46a6d42e7dSPeter Dunlap extern struct mod_ops mod_miscops; 47a6d42e7dSPeter Dunlap 48a6d42e7dSPeter Dunlap static struct modlmisc modlmisc = { 49a6d42e7dSPeter Dunlap &mod_miscops, /* Type of module */ 50a6d42e7dSPeter Dunlap IDM_NAME_VERSION 51a6d42e7dSPeter Dunlap }; 52a6d42e7dSPeter Dunlap 53a6d42e7dSPeter Dunlap static struct modlinkage modlinkage = { 54a6d42e7dSPeter Dunlap MODREV_1, (void *)&modlmisc, NULL 55a6d42e7dSPeter Dunlap }; 56a6d42e7dSPeter Dunlap 57a6d42e7dSPeter Dunlap extern int idm_task_compare(const void *t1, const void *t2); 58a6d42e7dSPeter Dunlap extern void idm_wd_thread(void *arg); 59a6d42e7dSPeter Dunlap 60a6d42e7dSPeter Dunlap static int _idm_init(void); 61a6d42e7dSPeter Dunlap static int _idm_fini(void); 62a6d42e7dSPeter Dunlap static void idm_buf_bind_in_locked(idm_task_t *idt, idm_buf_t *buf); 63a6d42e7dSPeter Dunlap static void idm_buf_bind_out_locked(idm_task_t *idt, idm_buf_t *buf); 64a6d42e7dSPeter Dunlap static void idm_buf_unbind_in_locked(idm_task_t *idt, idm_buf_t *buf); 65a6d42e7dSPeter Dunlap static void idm_buf_unbind_out_locked(idm_task_t *idt, idm_buf_t *buf); 66a6d42e7dSPeter Dunlap static void idm_task_abort_one(idm_conn_t *ic, idm_task_t *idt, 67a6d42e7dSPeter Dunlap idm_abort_type_t abort_type); 68a6d42e7dSPeter Dunlap static void idm_task_aborted(idm_task_t *idt, idm_status_t status); 69*30e7468fSPeter Dunlap static idm_pdu_t *idm_pdu_alloc_common(uint_t hdrlen, uint_t datalen, 70*30e7468fSPeter Dunlap int sleepflag); 71a6d42e7dSPeter Dunlap 72a6d42e7dSPeter Dunlap boolean_t idm_conn_logging = 0; 73a6d42e7dSPeter Dunlap boolean_t idm_svc_logging = 0; 74*30e7468fSPeter Dunlap #ifdef DEBUG 75*30e7468fSPeter Dunlap boolean_t idm_pattern_checking = 1; 76*30e7468fSPeter Dunlap #else 77*30e7468fSPeter Dunlap boolean_t idm_pattern_checking = 0; 78*30e7468fSPeter Dunlap #endif 79a6d42e7dSPeter Dunlap 80a6d42e7dSPeter Dunlap /* 81a6d42e7dSPeter Dunlap * Potential tuneable for the maximum number of tasks. Default to 82a6d42e7dSPeter Dunlap * IDM_TASKIDS_MAX 83a6d42e7dSPeter Dunlap */ 84a6d42e7dSPeter Dunlap 85a6d42e7dSPeter Dunlap uint32_t idm_max_taskids = IDM_TASKIDS_MAX; 86a6d42e7dSPeter Dunlap 87a6d42e7dSPeter Dunlap /* 88a6d42e7dSPeter Dunlap * Global list of transport handles 89a6d42e7dSPeter Dunlap * These are listed in preferential order, so we can simply take the 90a6d42e7dSPeter Dunlap * first "it_conn_is_capable" hit. Note also that the order maps to 91a6d42e7dSPeter Dunlap * the order of the idm_transport_type_t list. 92a6d42e7dSPeter Dunlap */ 93a6d42e7dSPeter Dunlap idm_transport_t idm_transport_list[] = { 94a6d42e7dSPeter Dunlap 95a6d42e7dSPeter Dunlap /* iSER on InfiniBand transport handle */ 96a6d42e7dSPeter Dunlap {IDM_TRANSPORT_TYPE_ISER, /* type */ 97a6d42e7dSPeter Dunlap "/devices/ib/iser@0:iser", /* device path */ 98a6d42e7dSPeter Dunlap NULL, /* LDI handle */ 99a6d42e7dSPeter Dunlap NULL, /* transport ops */ 100a6d42e7dSPeter Dunlap NULL}, /* transport caps */ 101a6d42e7dSPeter Dunlap 102a6d42e7dSPeter Dunlap /* IDM native sockets transport handle */ 103a6d42e7dSPeter Dunlap {IDM_TRANSPORT_TYPE_SOCKETS, /* type */ 104a6d42e7dSPeter Dunlap NULL, /* device path */ 105a6d42e7dSPeter Dunlap NULL, /* LDI handle */ 106a6d42e7dSPeter Dunlap NULL, /* transport ops */ 107a6d42e7dSPeter Dunlap NULL} /* transport caps */ 108a6d42e7dSPeter Dunlap 109a6d42e7dSPeter Dunlap }; 110a6d42e7dSPeter Dunlap 111a6d42e7dSPeter Dunlap int 112a6d42e7dSPeter Dunlap _init(void) 113a6d42e7dSPeter Dunlap { 114a6d42e7dSPeter Dunlap int rc; 115a6d42e7dSPeter Dunlap 116a6d42e7dSPeter Dunlap if ((rc = _idm_init()) != 0) { 117a6d42e7dSPeter Dunlap return (rc); 118a6d42e7dSPeter Dunlap } 119a6d42e7dSPeter Dunlap 120a6d42e7dSPeter Dunlap return (mod_install(&modlinkage)); 121a6d42e7dSPeter Dunlap } 122a6d42e7dSPeter Dunlap 123a6d42e7dSPeter Dunlap int 124a6d42e7dSPeter Dunlap _fini(void) 125a6d42e7dSPeter Dunlap { 126a6d42e7dSPeter Dunlap int rc; 127a6d42e7dSPeter Dunlap 128a6d42e7dSPeter Dunlap if ((rc = _idm_fini()) != 0) { 129a6d42e7dSPeter Dunlap return (rc); 130a6d42e7dSPeter Dunlap } 131a6d42e7dSPeter Dunlap 132a6d42e7dSPeter Dunlap if ((rc = mod_remove(&modlinkage)) != 0) { 133a6d42e7dSPeter Dunlap return (rc); 134a6d42e7dSPeter Dunlap } 135a6d42e7dSPeter Dunlap 136a6d42e7dSPeter Dunlap return (rc); 137a6d42e7dSPeter Dunlap } 138a6d42e7dSPeter Dunlap 139a6d42e7dSPeter Dunlap int 140a6d42e7dSPeter Dunlap _info(struct modinfo *modinfop) 141a6d42e7dSPeter Dunlap { 142a6d42e7dSPeter Dunlap return (mod_info(&modlinkage, modinfop)); 143a6d42e7dSPeter Dunlap } 144a6d42e7dSPeter Dunlap 145a6d42e7dSPeter Dunlap /* 146a6d42e7dSPeter Dunlap * idm_transport_register() 147a6d42e7dSPeter Dunlap * 148a6d42e7dSPeter Dunlap * Provides a mechanism for an IDM transport driver to register its 149a6d42e7dSPeter Dunlap * transport ops and caps with the IDM kernel module. Invoked during 150a6d42e7dSPeter Dunlap * a transport driver's attach routine. 151a6d42e7dSPeter Dunlap */ 152a6d42e7dSPeter Dunlap idm_status_t 153a6d42e7dSPeter Dunlap idm_transport_register(idm_transport_attr_t *attr) 154a6d42e7dSPeter Dunlap { 155a6d42e7dSPeter Dunlap ASSERT(attr->it_ops != NULL); 156a6d42e7dSPeter Dunlap ASSERT(attr->it_caps != NULL); 157a6d42e7dSPeter Dunlap 158a6d42e7dSPeter Dunlap switch (attr->type) { 159a6d42e7dSPeter Dunlap /* All known non-native transports here; for now, iSER */ 160a6d42e7dSPeter Dunlap case IDM_TRANSPORT_TYPE_ISER: 161a6d42e7dSPeter Dunlap idm_transport_list[attr->type].it_ops = attr->it_ops; 162a6d42e7dSPeter Dunlap idm_transport_list[attr->type].it_caps = attr->it_caps; 163a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 164a6d42e7dSPeter Dunlap 165a6d42e7dSPeter Dunlap default: 166a6d42e7dSPeter Dunlap cmn_err(CE_NOTE, "idm: unknown transport type (0x%x) in " 167a6d42e7dSPeter Dunlap "idm_transport_register", attr->type); 168a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 169a6d42e7dSPeter Dunlap } 170a6d42e7dSPeter Dunlap } 171a6d42e7dSPeter Dunlap 172a6d42e7dSPeter Dunlap /* 173a6d42e7dSPeter Dunlap * idm_ini_conn_create 174a6d42e7dSPeter Dunlap * 175a6d42e7dSPeter Dunlap * This function is invoked by the iSCSI layer to create a connection context. 176a6d42e7dSPeter Dunlap * This does not actually establish the socket connection. 177a6d42e7dSPeter Dunlap * 178a6d42e7dSPeter Dunlap * cr - Connection request parameters 179a6d42e7dSPeter Dunlap * new_con - Output parameter that contains the new request if successful 180a6d42e7dSPeter Dunlap * 181a6d42e7dSPeter Dunlap */ 182a6d42e7dSPeter Dunlap idm_status_t 183a6d42e7dSPeter Dunlap idm_ini_conn_create(idm_conn_req_t *cr, idm_conn_t **new_con) 184a6d42e7dSPeter Dunlap { 185a6d42e7dSPeter Dunlap idm_transport_t *it; 186a6d42e7dSPeter Dunlap idm_conn_t *ic; 187a6d42e7dSPeter Dunlap int rc; 188a6d42e7dSPeter Dunlap 189a6d42e7dSPeter Dunlap it = idm_transport_lookup(cr); 190a6d42e7dSPeter Dunlap 191a6d42e7dSPeter Dunlap retry: 192a6d42e7dSPeter Dunlap ic = idm_conn_create_common(CONN_TYPE_INI, it->it_type, 193a6d42e7dSPeter Dunlap &cr->icr_conn_ops); 194a6d42e7dSPeter Dunlap 195a6d42e7dSPeter Dunlap bcopy(&cr->cr_ini_dst_addr, &ic->ic_ini_dst_addr, 196a6d42e7dSPeter Dunlap sizeof (cr->cr_ini_dst_addr)); 197a6d42e7dSPeter Dunlap 198a6d42e7dSPeter Dunlap /* create the transport-specific connection components */ 199a6d42e7dSPeter Dunlap rc = it->it_ops->it_ini_conn_create(cr, ic); 200a6d42e7dSPeter Dunlap if (rc != IDM_STATUS_SUCCESS) { 201a6d42e7dSPeter Dunlap /* cleanup the failed connection */ 202a6d42e7dSPeter Dunlap idm_conn_destroy_common(ic); 203a6d42e7dSPeter Dunlap kmem_free(ic, sizeof (idm_conn_t)); 204a6d42e7dSPeter Dunlap 205a6d42e7dSPeter Dunlap /* 206a6d42e7dSPeter Dunlap * It is possible for an IB client to connect to 207a6d42e7dSPeter Dunlap * an ethernet-only client via an IB-eth gateway. 208a6d42e7dSPeter Dunlap * Therefore, if we are attempting to use iSER and 209a6d42e7dSPeter Dunlap * fail, retry with sockets before ultimately 210a6d42e7dSPeter Dunlap * failing the connection. 211a6d42e7dSPeter Dunlap */ 212a6d42e7dSPeter Dunlap if (it->it_type == IDM_TRANSPORT_TYPE_ISER) { 213a6d42e7dSPeter Dunlap it = &idm_transport_list[IDM_TRANSPORT_TYPE_SOCKETS]; 214a6d42e7dSPeter Dunlap goto retry; 215a6d42e7dSPeter Dunlap } 216a6d42e7dSPeter Dunlap 217a6d42e7dSPeter Dunlap return (IDM_STATUS_FAIL); 218a6d42e7dSPeter Dunlap } 219a6d42e7dSPeter Dunlap 220a6d42e7dSPeter Dunlap *new_con = ic; 221a6d42e7dSPeter Dunlap 222a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 223a6d42e7dSPeter Dunlap list_insert_tail(&idm.idm_ini_conn_list, ic); 224a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 225a6d42e7dSPeter Dunlap 226a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 227a6d42e7dSPeter Dunlap } 228a6d42e7dSPeter Dunlap 229a6d42e7dSPeter Dunlap /* 230a6d42e7dSPeter Dunlap * idm_ini_conn_destroy 231a6d42e7dSPeter Dunlap * 232a6d42e7dSPeter Dunlap * Releases any resources associated with the connection. This is the 233a6d42e7dSPeter Dunlap * complement to idm_ini_conn_create. 234a6d42e7dSPeter Dunlap * ic - idm_conn_t structure representing the relevant connection 235a6d42e7dSPeter Dunlap * 236a6d42e7dSPeter Dunlap */ 237*30e7468fSPeter Dunlap void 238*30e7468fSPeter Dunlap idm_ini_conn_destroy_task(void *ic_void) 239*30e7468fSPeter Dunlap { 240*30e7468fSPeter Dunlap idm_conn_t *ic = ic_void; 241*30e7468fSPeter Dunlap 242*30e7468fSPeter Dunlap ic->ic_transport_ops->it_ini_conn_destroy(ic); 243*30e7468fSPeter Dunlap idm_conn_destroy_common(ic); 244*30e7468fSPeter Dunlap } 245*30e7468fSPeter Dunlap 246a6d42e7dSPeter Dunlap void 247a6d42e7dSPeter Dunlap idm_ini_conn_destroy(idm_conn_t *ic) 248a6d42e7dSPeter Dunlap { 249*30e7468fSPeter Dunlap /* 250*30e7468fSPeter Dunlap * It's reasonable for the initiator to call idm_ini_conn_destroy 251*30e7468fSPeter Dunlap * from within the context of the CN_CONNECT_DESTROY notification. 252*30e7468fSPeter Dunlap * That's a problem since we want to destroy the taskq for the 253*30e7468fSPeter Dunlap * state machine associated with the connection. Remove the 254*30e7468fSPeter Dunlap * connection from the list right away then handle the remaining 255*30e7468fSPeter Dunlap * work via the idm_global_taskq. 256*30e7468fSPeter Dunlap */ 257a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 258a6d42e7dSPeter Dunlap list_remove(&idm.idm_ini_conn_list, ic); 259a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 260a6d42e7dSPeter Dunlap 261*30e7468fSPeter Dunlap if (taskq_dispatch(idm.idm_global_taskq, 262*30e7468fSPeter Dunlap &idm_ini_conn_destroy_task, ic, TQ_SLEEP) == NULL) { 263*30e7468fSPeter Dunlap cmn_err(CE_WARN, 264*30e7468fSPeter Dunlap "idm_ini_conn_destroy: Couldn't dispatch task"); 265*30e7468fSPeter Dunlap } 266a6d42e7dSPeter Dunlap } 267a6d42e7dSPeter Dunlap 268a6d42e7dSPeter Dunlap /* 269a6d42e7dSPeter Dunlap * idm_ini_conn_connect 270a6d42e7dSPeter Dunlap * 271a6d42e7dSPeter Dunlap * Establish connection to the remote system identified in idm_conn_t. 272a6d42e7dSPeter Dunlap * The connection parameters including the remote IP address were established 273*30e7468fSPeter Dunlap * in the call to idm_ini_conn_create. The IDM state machine will 274*30e7468fSPeter Dunlap * perform client notifications as necessary to prompt the initiator through 275*30e7468fSPeter Dunlap * the login process. IDM also keeps a timer running so that if the login 276*30e7468fSPeter Dunlap * process doesn't complete in a timely manner it will fail. 277a6d42e7dSPeter Dunlap * 278a6d42e7dSPeter Dunlap * ic - idm_conn_t structure representing the relevant connection 279a6d42e7dSPeter Dunlap * 280a6d42e7dSPeter Dunlap * Returns success if the connection was established, otherwise some kind 281a6d42e7dSPeter Dunlap * of meaningful error code. 282a6d42e7dSPeter Dunlap * 283*30e7468fSPeter Dunlap * Upon return the login has either failed or is loggin in (ffp) 284a6d42e7dSPeter Dunlap */ 285a6d42e7dSPeter Dunlap idm_status_t 286a6d42e7dSPeter Dunlap idm_ini_conn_connect(idm_conn_t *ic) 287a6d42e7dSPeter Dunlap { 288*30e7468fSPeter Dunlap idm_status_t rc = IDM_STATUS_SUCCESS; 289a6d42e7dSPeter Dunlap 290a6d42e7dSPeter Dunlap rc = idm_conn_sm_init(ic); 291a6d42e7dSPeter Dunlap if (rc != IDM_STATUS_SUCCESS) { 292a6d42e7dSPeter Dunlap return (ic->ic_conn_sm_status); 293a6d42e7dSPeter Dunlap } 294*30e7468fSPeter Dunlap 295*30e7468fSPeter Dunlap /* Hold connection until we return */ 296*30e7468fSPeter Dunlap idm_conn_hold(ic); 297*30e7468fSPeter Dunlap 298a6d42e7dSPeter Dunlap /* Kick state machine */ 299a6d42e7dSPeter Dunlap idm_conn_event(ic, CE_CONNECT_REQ, NULL); 300a6d42e7dSPeter Dunlap 301a6d42e7dSPeter Dunlap /* Wait for login flag */ 302a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 303a6d42e7dSPeter Dunlap while (!(ic->ic_state_flags & CF_LOGIN_READY) && 304a6d42e7dSPeter Dunlap !(ic->ic_state_flags & CF_ERROR)) { 305a6d42e7dSPeter Dunlap cv_wait(&ic->ic_state_cv, &ic->ic_state_mutex); 306a6d42e7dSPeter Dunlap } 307a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 308a6d42e7dSPeter Dunlap 309a6d42e7dSPeter Dunlap if (ic->ic_state_flags & CF_ERROR) { 310a6d42e7dSPeter Dunlap /* ic->ic_conn_sm_status will contains failure status */ 311*30e7468fSPeter Dunlap idm_conn_rele(ic); 312a6d42e7dSPeter Dunlap return (ic->ic_conn_sm_status); 313a6d42e7dSPeter Dunlap } 314a6d42e7dSPeter Dunlap 315a6d42e7dSPeter Dunlap /* Ready to login */ 316a6d42e7dSPeter Dunlap ASSERT(ic->ic_state_flags & CF_LOGIN_READY); 317a6d42e7dSPeter Dunlap (void) idm_notify_client(ic, CN_READY_FOR_LOGIN, NULL); 318a6d42e7dSPeter Dunlap 319*30e7468fSPeter Dunlap idm_conn_rele(ic); 320*30e7468fSPeter Dunlap 321*30e7468fSPeter Dunlap return (rc); 322a6d42e7dSPeter Dunlap } 323a6d42e7dSPeter Dunlap 324a6d42e7dSPeter Dunlap /* 325*30e7468fSPeter Dunlap * idm_ini_conn_disconnect 326a6d42e7dSPeter Dunlap * 327*30e7468fSPeter Dunlap * Forces a connection (previously established using idm_ini_conn_connect) 328*30e7468fSPeter Dunlap * to perform a controlled shutdown, cleaning up any outstanding requests. 329*30e7468fSPeter Dunlap * 330*30e7468fSPeter Dunlap * ic - idm_conn_t structure representing the relevant connection 331*30e7468fSPeter Dunlap * 332*30e7468fSPeter Dunlap * This is asynchronous and will return before the connection is properly 333*30e7468fSPeter Dunlap * shutdown 334a6d42e7dSPeter Dunlap */ 335*30e7468fSPeter Dunlap /* ARGSUSED */ 336*30e7468fSPeter Dunlap void 337*30e7468fSPeter Dunlap idm_ini_conn_disconnect(idm_conn_t *ic) 338a6d42e7dSPeter Dunlap { 339*30e7468fSPeter Dunlap idm_conn_event(ic, CE_TRANSPORT_FAIL, NULL); 340a6d42e7dSPeter Dunlap } 341a6d42e7dSPeter Dunlap 342a6d42e7dSPeter Dunlap /* 343*30e7468fSPeter Dunlap * idm_ini_conn_disconnect_wait 344a6d42e7dSPeter Dunlap * 345a6d42e7dSPeter Dunlap * Forces a connection (previously established using idm_ini_conn_connect) 346*30e7468fSPeter Dunlap * to perform a controlled shutdown. Blocks until the connection is 347*30e7468fSPeter Dunlap * disconnected. 348a6d42e7dSPeter Dunlap * 349a6d42e7dSPeter Dunlap * ic - idm_conn_t structure representing the relevant connection 350a6d42e7dSPeter Dunlap */ 351a6d42e7dSPeter Dunlap /* ARGSUSED */ 352a6d42e7dSPeter Dunlap void 353*30e7468fSPeter Dunlap idm_ini_conn_disconnect_sync(idm_conn_t *ic) 354a6d42e7dSPeter Dunlap { 355a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 356*30e7468fSPeter Dunlap if ((ic->ic_state != CS_S9_INIT_ERROR) && 357*30e7468fSPeter Dunlap (ic->ic_state != CS_S11_COMPLETE)) { 358*30e7468fSPeter Dunlap idm_conn_event_locked(ic, CE_TRANSPORT_FAIL, NULL, CT_NONE); 359*30e7468fSPeter Dunlap while ((ic->ic_state != CS_S9_INIT_ERROR) && 360*30e7468fSPeter Dunlap (ic->ic_state != CS_S11_COMPLETE)) 361*30e7468fSPeter Dunlap cv_wait(&ic->ic_state_cv, &ic->ic_state_mutex); 362a6d42e7dSPeter Dunlap } 363a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 364a6d42e7dSPeter Dunlap } 365a6d42e7dSPeter Dunlap 366a6d42e7dSPeter Dunlap /* 367a6d42e7dSPeter Dunlap * idm_tgt_svc_create 368a6d42e7dSPeter Dunlap * 369a6d42e7dSPeter Dunlap * The target calls this service to obtain a service context for each available 370a6d42e7dSPeter Dunlap * transport, starting a service of each type related to the IP address and port 371a6d42e7dSPeter Dunlap * passed. The idm_svc_req_t contains the service parameters. 372a6d42e7dSPeter Dunlap */ 373a6d42e7dSPeter Dunlap idm_status_t 374a6d42e7dSPeter Dunlap idm_tgt_svc_create(idm_svc_req_t *sr, idm_svc_t **new_svc) 375a6d42e7dSPeter Dunlap { 376a6d42e7dSPeter Dunlap idm_transport_type_t type; 377a6d42e7dSPeter Dunlap idm_transport_t *it; 378a6d42e7dSPeter Dunlap idm_svc_t *is; 379a6d42e7dSPeter Dunlap int rc; 380a6d42e7dSPeter Dunlap 381a6d42e7dSPeter Dunlap *new_svc = NULL; 382a6d42e7dSPeter Dunlap is = kmem_zalloc(sizeof (idm_svc_t), KM_SLEEP); 383a6d42e7dSPeter Dunlap 384a6d42e7dSPeter Dunlap /* Initialize transport-agnostic components of the service handle */ 385a6d42e7dSPeter Dunlap is->is_svc_req = *sr; 386a6d42e7dSPeter Dunlap mutex_init(&is->is_mutex, NULL, MUTEX_DEFAULT, NULL); 387a6d42e7dSPeter Dunlap cv_init(&is->is_cv, NULL, CV_DEFAULT, NULL); 388a6d42e7dSPeter Dunlap mutex_init(&is->is_count_mutex, NULL, MUTEX_DEFAULT, NULL); 389a6d42e7dSPeter Dunlap cv_init(&is->is_count_cv, NULL, CV_DEFAULT, NULL); 390a6d42e7dSPeter Dunlap idm_refcnt_init(&is->is_refcnt, is); 391a6d42e7dSPeter Dunlap 392a6d42e7dSPeter Dunlap /* 393a6d42e7dSPeter Dunlap * Make sure all available transports are setup. We call this now 394a6d42e7dSPeter Dunlap * instead of at initialization time in case IB has become available 395a6d42e7dSPeter Dunlap * since we started (hotplug, etc). 396a6d42e7dSPeter Dunlap */ 397a6d42e7dSPeter Dunlap idm_transport_setup(sr->sr_li); 398a6d42e7dSPeter Dunlap 399a6d42e7dSPeter Dunlap /* 400a6d42e7dSPeter Dunlap * Loop through the transports, configuring the transport-specific 401a6d42e7dSPeter Dunlap * components of each one. 402a6d42e7dSPeter Dunlap */ 403a6d42e7dSPeter Dunlap for (type = 0; type < IDM_TRANSPORT_NUM_TYPES; type++) { 404a6d42e7dSPeter Dunlap 405a6d42e7dSPeter Dunlap it = &idm_transport_list[type]; 406a6d42e7dSPeter Dunlap /* 407a6d42e7dSPeter Dunlap * If it_ops is NULL then the transport is unconfigured 408a6d42e7dSPeter Dunlap * and we shouldn't try to start the service. 409a6d42e7dSPeter Dunlap */ 410a6d42e7dSPeter Dunlap if (it->it_ops == NULL) { 411a6d42e7dSPeter Dunlap continue; 412a6d42e7dSPeter Dunlap } 413a6d42e7dSPeter Dunlap 414a6d42e7dSPeter Dunlap rc = it->it_ops->it_tgt_svc_create(sr, is); 415a6d42e7dSPeter Dunlap if (rc != IDM_STATUS_SUCCESS) { 416a6d42e7dSPeter Dunlap /* Teardown any configured services */ 417a6d42e7dSPeter Dunlap while (type--) { 418a6d42e7dSPeter Dunlap it = &idm_transport_list[type]; 419a6d42e7dSPeter Dunlap if (it->it_ops == NULL) { 420a6d42e7dSPeter Dunlap continue; 421a6d42e7dSPeter Dunlap } 422a6d42e7dSPeter Dunlap it->it_ops->it_tgt_svc_destroy(is); 423a6d42e7dSPeter Dunlap } 424a6d42e7dSPeter Dunlap /* Free the svc context and return */ 425a6d42e7dSPeter Dunlap kmem_free(is, sizeof (idm_svc_t)); 426a6d42e7dSPeter Dunlap return (rc); 427a6d42e7dSPeter Dunlap } 428a6d42e7dSPeter Dunlap } 429a6d42e7dSPeter Dunlap 430a6d42e7dSPeter Dunlap *new_svc = is; 431a6d42e7dSPeter Dunlap 432a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 433a6d42e7dSPeter Dunlap list_insert_tail(&idm.idm_tgt_svc_list, is); 434a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 435a6d42e7dSPeter Dunlap 436a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 437a6d42e7dSPeter Dunlap } 438a6d42e7dSPeter Dunlap 439a6d42e7dSPeter Dunlap /* 440a6d42e7dSPeter Dunlap * idm_tgt_svc_destroy 441a6d42e7dSPeter Dunlap * 442a6d42e7dSPeter Dunlap * is - idm_svc_t returned by the call to idm_tgt_svc_create 443a6d42e7dSPeter Dunlap * 444a6d42e7dSPeter Dunlap * Cleanup any resources associated with the idm_svc_t. 445a6d42e7dSPeter Dunlap */ 446a6d42e7dSPeter Dunlap void 447a6d42e7dSPeter Dunlap idm_tgt_svc_destroy(idm_svc_t *is) 448a6d42e7dSPeter Dunlap { 449a6d42e7dSPeter Dunlap idm_transport_type_t type; 450a6d42e7dSPeter Dunlap idm_transport_t *it; 451a6d42e7dSPeter Dunlap 452a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 453a6d42e7dSPeter Dunlap /* remove this service from the global list */ 454a6d42e7dSPeter Dunlap list_remove(&idm.idm_tgt_svc_list, is); 455a6d42e7dSPeter Dunlap /* wakeup any waiters for service change */ 456a6d42e7dSPeter Dunlap cv_broadcast(&idm.idm_tgt_svc_cv); 457a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 458a6d42e7dSPeter Dunlap 459a6d42e7dSPeter Dunlap /* teardown each transport-specific service */ 460a6d42e7dSPeter Dunlap for (type = 0; type < IDM_TRANSPORT_NUM_TYPES; type++) { 461a6d42e7dSPeter Dunlap it = &idm_transport_list[type]; 462a6d42e7dSPeter Dunlap if (it->it_ops == NULL) { 463a6d42e7dSPeter Dunlap continue; 464a6d42e7dSPeter Dunlap } 465a6d42e7dSPeter Dunlap 466a6d42e7dSPeter Dunlap it->it_ops->it_tgt_svc_destroy(is); 467a6d42e7dSPeter Dunlap } 468a6d42e7dSPeter Dunlap 469*30e7468fSPeter Dunlap /* tear down the svc resources */ 470*30e7468fSPeter Dunlap idm_refcnt_destroy(&is->is_refcnt); 471*30e7468fSPeter Dunlap cv_destroy(&is->is_count_cv); 472*30e7468fSPeter Dunlap mutex_destroy(&is->is_count_mutex); 473*30e7468fSPeter Dunlap cv_destroy(&is->is_cv); 474*30e7468fSPeter Dunlap mutex_destroy(&is->is_mutex); 475*30e7468fSPeter Dunlap 476a6d42e7dSPeter Dunlap /* free the svc handle */ 477a6d42e7dSPeter Dunlap kmem_free(is, sizeof (idm_svc_t)); 478a6d42e7dSPeter Dunlap } 479a6d42e7dSPeter Dunlap 480a6d42e7dSPeter Dunlap void 481a6d42e7dSPeter Dunlap idm_tgt_svc_hold(idm_svc_t *is) 482a6d42e7dSPeter Dunlap { 483a6d42e7dSPeter Dunlap idm_refcnt_hold(&is->is_refcnt); 484a6d42e7dSPeter Dunlap } 485a6d42e7dSPeter Dunlap 486a6d42e7dSPeter Dunlap void 487a6d42e7dSPeter Dunlap idm_tgt_svc_rele_and_destroy(idm_svc_t *is) 488a6d42e7dSPeter Dunlap { 489a6d42e7dSPeter Dunlap idm_refcnt_rele_and_destroy(&is->is_refcnt, 490a6d42e7dSPeter Dunlap (idm_refcnt_cb_t *)&idm_tgt_svc_destroy); 491a6d42e7dSPeter Dunlap } 492a6d42e7dSPeter Dunlap 493a6d42e7dSPeter Dunlap /* 494a6d42e7dSPeter Dunlap * idm_tgt_svc_online 495a6d42e7dSPeter Dunlap * 496a6d42e7dSPeter Dunlap * is - idm_svc_t returned by the call to idm_tgt_svc_create 497a6d42e7dSPeter Dunlap * 498a6d42e7dSPeter Dunlap * Online each transport service, as we want this target to be accessible 499a6d42e7dSPeter Dunlap * via any configured transport. 500a6d42e7dSPeter Dunlap * 501a6d42e7dSPeter Dunlap * When the initiator establishes a new connection to the target, IDM will 502a6d42e7dSPeter Dunlap * call the "new connect" callback defined in the idm_svc_req_t structure 503a6d42e7dSPeter Dunlap * and it will pass an idm_conn_t structure representing that new connection. 504a6d42e7dSPeter Dunlap */ 505a6d42e7dSPeter Dunlap idm_status_t 506a6d42e7dSPeter Dunlap idm_tgt_svc_online(idm_svc_t *is) 507a6d42e7dSPeter Dunlap { 508a6d42e7dSPeter Dunlap 509*30e7468fSPeter Dunlap idm_transport_type_t type, last_type; 510a6d42e7dSPeter Dunlap idm_transport_t *it; 511*30e7468fSPeter Dunlap int rc = IDM_STATUS_SUCCESS; 512a6d42e7dSPeter Dunlap 513a6d42e7dSPeter Dunlap mutex_enter(&is->is_mutex); 514a6d42e7dSPeter Dunlap if (is->is_online == 0) { 515*30e7468fSPeter Dunlap /* Walk through each of the transports and online them */ 516a6d42e7dSPeter Dunlap for (type = 0; type < IDM_TRANSPORT_NUM_TYPES; type++) { 517a6d42e7dSPeter Dunlap it = &idm_transport_list[type]; 518a6d42e7dSPeter Dunlap if (it->it_ops == NULL) { 519a6d42e7dSPeter Dunlap /* transport is not registered */ 520a6d42e7dSPeter Dunlap continue; 521a6d42e7dSPeter Dunlap } 522a6d42e7dSPeter Dunlap 523a6d42e7dSPeter Dunlap mutex_exit(&is->is_mutex); 524a6d42e7dSPeter Dunlap rc = it->it_ops->it_tgt_svc_online(is); 525a6d42e7dSPeter Dunlap mutex_enter(&is->is_mutex); 526*30e7468fSPeter Dunlap if (rc != IDM_STATUS_SUCCESS) { 527*30e7468fSPeter Dunlap last_type = type; 528*30e7468fSPeter Dunlap break; 529*30e7468fSPeter Dunlap } 530*30e7468fSPeter Dunlap } 531*30e7468fSPeter Dunlap if (rc != IDM_STATUS_SUCCESS) { 532*30e7468fSPeter Dunlap /* 533*30e7468fSPeter Dunlap * The last transport failed to online. 534*30e7468fSPeter Dunlap * Offline any transport onlined above and 535*30e7468fSPeter Dunlap * do not online the target. 536*30e7468fSPeter Dunlap */ 537*30e7468fSPeter Dunlap for (type = 0; type < last_type; type++) { 538*30e7468fSPeter Dunlap it = &idm_transport_list[type]; 539*30e7468fSPeter Dunlap if (it->it_ops == NULL) { 540*30e7468fSPeter Dunlap /* transport is not registered */ 541*30e7468fSPeter Dunlap continue; 542*30e7468fSPeter Dunlap } 543*30e7468fSPeter Dunlap 544*30e7468fSPeter Dunlap mutex_exit(&is->is_mutex); 545*30e7468fSPeter Dunlap it->it_ops->it_tgt_svc_offline(is); 546*30e7468fSPeter Dunlap mutex_enter(&is->is_mutex); 547a6d42e7dSPeter Dunlap } 548*30e7468fSPeter Dunlap } else { 549*30e7468fSPeter Dunlap /* Target service now online */ 550*30e7468fSPeter Dunlap is->is_online = 1; 551a6d42e7dSPeter Dunlap } 552a6d42e7dSPeter Dunlap } else { 553*30e7468fSPeter Dunlap /* Target service already online, just bump the count */ 554a6d42e7dSPeter Dunlap is->is_online++; 555*30e7468fSPeter Dunlap } 556a6d42e7dSPeter Dunlap mutex_exit(&is->is_mutex); 557a6d42e7dSPeter Dunlap 558*30e7468fSPeter Dunlap return (rc); 559a6d42e7dSPeter Dunlap } 560a6d42e7dSPeter Dunlap 561a6d42e7dSPeter Dunlap /* 562a6d42e7dSPeter Dunlap * idm_tgt_svc_offline 563a6d42e7dSPeter Dunlap * 564a6d42e7dSPeter Dunlap * is - idm_svc_t returned by the call to idm_tgt_svc_create 565a6d42e7dSPeter Dunlap * 566a6d42e7dSPeter Dunlap * Shutdown any online target services. 567a6d42e7dSPeter Dunlap */ 568a6d42e7dSPeter Dunlap void 569a6d42e7dSPeter Dunlap idm_tgt_svc_offline(idm_svc_t *is) 570a6d42e7dSPeter Dunlap { 571a6d42e7dSPeter Dunlap idm_transport_type_t type; 572a6d42e7dSPeter Dunlap idm_transport_t *it; 573a6d42e7dSPeter Dunlap 574a6d42e7dSPeter Dunlap mutex_enter(&is->is_mutex); 575a6d42e7dSPeter Dunlap is->is_online--; 576a6d42e7dSPeter Dunlap if (is->is_online == 0) { 577a6d42e7dSPeter Dunlap /* Walk through each of the transports and offline them */ 578a6d42e7dSPeter Dunlap for (type = 0; type < IDM_TRANSPORT_NUM_TYPES; type++) { 579a6d42e7dSPeter Dunlap it = &idm_transport_list[type]; 580a6d42e7dSPeter Dunlap if (it->it_ops == NULL) { 581a6d42e7dSPeter Dunlap /* transport is not registered */ 582a6d42e7dSPeter Dunlap continue; 583a6d42e7dSPeter Dunlap } 584a6d42e7dSPeter Dunlap 585a6d42e7dSPeter Dunlap mutex_exit(&is->is_mutex); 586a6d42e7dSPeter Dunlap it->it_ops->it_tgt_svc_offline(is); 587a6d42e7dSPeter Dunlap mutex_enter(&is->is_mutex); 588a6d42e7dSPeter Dunlap } 589a6d42e7dSPeter Dunlap } 590a6d42e7dSPeter Dunlap mutex_exit(&is->is_mutex); 591a6d42e7dSPeter Dunlap } 592a6d42e7dSPeter Dunlap 593a6d42e7dSPeter Dunlap /* 594a6d42e7dSPeter Dunlap * idm_tgt_svc_lookup 595a6d42e7dSPeter Dunlap * 596a6d42e7dSPeter Dunlap * Lookup a service instance listening on the specified port 597a6d42e7dSPeter Dunlap */ 598a6d42e7dSPeter Dunlap 599a6d42e7dSPeter Dunlap idm_svc_t * 600a6d42e7dSPeter Dunlap idm_tgt_svc_lookup(uint16_t port) 601a6d42e7dSPeter Dunlap { 602a6d42e7dSPeter Dunlap idm_svc_t *result; 603a6d42e7dSPeter Dunlap 604a6d42e7dSPeter Dunlap retry: 605a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 606a6d42e7dSPeter Dunlap for (result = list_head(&idm.idm_tgt_svc_list); 607a6d42e7dSPeter Dunlap result != NULL; 608a6d42e7dSPeter Dunlap result = list_next(&idm.idm_tgt_svc_list, result)) { 609a6d42e7dSPeter Dunlap if (result->is_svc_req.sr_port == port) { 610a6d42e7dSPeter Dunlap if (result->is_online == 0) { 611a6d42e7dSPeter Dunlap /* 612a6d42e7dSPeter Dunlap * A service exists on this port, but it 613a6d42e7dSPeter Dunlap * is going away, wait for it to cleanup. 614a6d42e7dSPeter Dunlap */ 615a6d42e7dSPeter Dunlap cv_wait(&idm.idm_tgt_svc_cv, 616a6d42e7dSPeter Dunlap &idm.idm_global_mutex); 617a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 618a6d42e7dSPeter Dunlap goto retry; 619a6d42e7dSPeter Dunlap } 620a6d42e7dSPeter Dunlap idm_tgt_svc_hold(result); 621a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 622a6d42e7dSPeter Dunlap return (result); 623a6d42e7dSPeter Dunlap } 624a6d42e7dSPeter Dunlap } 625a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 626a6d42e7dSPeter Dunlap 627a6d42e7dSPeter Dunlap return (NULL); 628a6d42e7dSPeter Dunlap } 629a6d42e7dSPeter Dunlap 630a6d42e7dSPeter Dunlap /* 631a6d42e7dSPeter Dunlap * idm_negotiate_key_values() 632a6d42e7dSPeter Dunlap * Give IDM level a chance to negotiate any login parameters it should own. 633a6d42e7dSPeter Dunlap * -- leave unhandled parameters alone on request_nvl 634a6d42e7dSPeter Dunlap * -- move all handled parameters to response_nvl with an appropriate response 635a6d42e7dSPeter Dunlap * -- also add an entry to negotiated_nvl for any accepted parameters 636a6d42e7dSPeter Dunlap */ 637a6d42e7dSPeter Dunlap kv_status_t 638a6d42e7dSPeter Dunlap idm_negotiate_key_values(idm_conn_t *ic, nvlist_t *request_nvl, 639a6d42e7dSPeter Dunlap nvlist_t *response_nvl, nvlist_t *negotiated_nvl) 640a6d42e7dSPeter Dunlap { 641a6d42e7dSPeter Dunlap ASSERT(ic->ic_transport_ops != NULL); 642a6d42e7dSPeter Dunlap return (ic->ic_transport_ops->it_negotiate_key_values(ic, 643a6d42e7dSPeter Dunlap request_nvl, response_nvl, negotiated_nvl)); 644a6d42e7dSPeter Dunlap } 645a6d42e7dSPeter Dunlap 646a6d42e7dSPeter Dunlap /* 647a6d42e7dSPeter Dunlap * idm_notice_key_values() 648a6d42e7dSPeter Dunlap * Activate at the IDM level any parameters that have been negotiated. 649a6d42e7dSPeter Dunlap * Passes the set of key value pairs to the transport for activation. 650a6d42e7dSPeter Dunlap * This will be invoked as the connection is entering full-feature mode. 651a6d42e7dSPeter Dunlap */ 652*30e7468fSPeter Dunlap void 653a6d42e7dSPeter Dunlap idm_notice_key_values(idm_conn_t *ic, nvlist_t *negotiated_nvl) 654a6d42e7dSPeter Dunlap { 655a6d42e7dSPeter Dunlap ASSERT(ic->ic_transport_ops != NULL); 656*30e7468fSPeter Dunlap ic->ic_transport_ops->it_notice_key_values(ic, negotiated_nvl); 657a6d42e7dSPeter Dunlap } 658a6d42e7dSPeter Dunlap 659a6d42e7dSPeter Dunlap /* 660a6d42e7dSPeter Dunlap * idm_buf_tx_to_ini 661a6d42e7dSPeter Dunlap * 662a6d42e7dSPeter Dunlap * This is IDM's implementation of the 'Put_Data' operational primitive. 663a6d42e7dSPeter Dunlap * 664a6d42e7dSPeter Dunlap * This function is invoked by a target iSCSI layer to request its local 665a6d42e7dSPeter Dunlap * Datamover layer to transmit the Data-In PDU to the peer iSCSI layer 666a6d42e7dSPeter Dunlap * on the remote iSCSI node. The I/O buffer represented by 'idb' is 667a6d42e7dSPeter Dunlap * transferred to the initiator associated with task 'idt'. The connection 668a6d42e7dSPeter Dunlap * info, contents of the Data-In PDU header, the DataDescriptorIn, BHS, 669a6d42e7dSPeter Dunlap * and the callback (idb->idb_buf_cb) at transfer completion are 670a6d42e7dSPeter Dunlap * provided as input. 671a6d42e7dSPeter Dunlap * 672a6d42e7dSPeter Dunlap * This data transfer takes place transparently to the remote iSCSI layer, 673a6d42e7dSPeter Dunlap * i.e. without its participation. 674a6d42e7dSPeter Dunlap * 675a6d42e7dSPeter Dunlap * Using sockets, IDM implements the data transfer by segmenting the data 676a6d42e7dSPeter Dunlap * buffer into appropriately sized iSCSI PDUs and transmitting them to the 677a6d42e7dSPeter Dunlap * initiator. iSER performs the transfer using RDMA write. 678a6d42e7dSPeter Dunlap * 679a6d42e7dSPeter Dunlap */ 680a6d42e7dSPeter Dunlap idm_status_t 681a6d42e7dSPeter Dunlap idm_buf_tx_to_ini(idm_task_t *idt, idm_buf_t *idb, 682a6d42e7dSPeter Dunlap uint32_t offset, uint32_t xfer_len, 683a6d42e7dSPeter Dunlap idm_buf_cb_t idb_buf_cb, void *cb_arg) 684a6d42e7dSPeter Dunlap { 685a6d42e7dSPeter Dunlap idm_status_t rc; 686a6d42e7dSPeter Dunlap 687a6d42e7dSPeter Dunlap idb->idb_bufoffset = offset; 688a6d42e7dSPeter Dunlap idb->idb_xfer_len = xfer_len; 689a6d42e7dSPeter Dunlap idb->idb_buf_cb = idb_buf_cb; 690a6d42e7dSPeter Dunlap idb->idb_cb_arg = cb_arg; 691*30e7468fSPeter Dunlap gethrestime(&idb->idb_xfer_start); 692*30e7468fSPeter Dunlap 693*30e7468fSPeter Dunlap /* 694*30e7468fSPeter Dunlap * Buffer should not contain the pattern. If the pattern is 695*30e7468fSPeter Dunlap * present then we've been asked to transmit initialized data 696*30e7468fSPeter Dunlap */ 697*30e7468fSPeter Dunlap IDM_BUFPAT_CHECK(idb, xfer_len, BP_CHECK_ASSERT); 698a6d42e7dSPeter Dunlap 699a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 700a6d42e7dSPeter Dunlap switch (idt->idt_state) { 701a6d42e7dSPeter Dunlap case TASK_ACTIVE: 702a6d42e7dSPeter Dunlap idt->idt_tx_to_ini_start++; 703a6d42e7dSPeter Dunlap idm_task_hold(idt); 704a6d42e7dSPeter Dunlap idm_buf_bind_in_locked(idt, idb); 705a6d42e7dSPeter Dunlap idb->idb_in_transport = B_TRUE; 706a6d42e7dSPeter Dunlap rc = (*idt->idt_ic->ic_transport_ops->it_buf_tx_to_ini) 707a6d42e7dSPeter Dunlap (idt, idb); 708a6d42e7dSPeter Dunlap return (rc); 709a6d42e7dSPeter Dunlap 710a6d42e7dSPeter Dunlap case TASK_SUSPENDING: 711a6d42e7dSPeter Dunlap case TASK_SUSPENDED: 712a6d42e7dSPeter Dunlap /* 713a6d42e7dSPeter Dunlap * Bind buffer but don't start a transfer since the task 714a6d42e7dSPeter Dunlap * is suspended 715a6d42e7dSPeter Dunlap */ 716a6d42e7dSPeter Dunlap idm_buf_bind_in_locked(idt, idb); 717a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 718a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 719a6d42e7dSPeter Dunlap 720a6d42e7dSPeter Dunlap case TASK_ABORTING: 721a6d42e7dSPeter Dunlap case TASK_ABORTED: 722a6d42e7dSPeter Dunlap /* 723a6d42e7dSPeter Dunlap * Once the task is aborted, any buffers added to the 724a6d42e7dSPeter Dunlap * idt_inbufv will never get cleaned up, so just return 725a6d42e7dSPeter Dunlap * SUCCESS. The buffer should get cleaned up by the 726a6d42e7dSPeter Dunlap * client or framework once task_aborted has completed. 727a6d42e7dSPeter Dunlap */ 728a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 729a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 730a6d42e7dSPeter Dunlap 731a6d42e7dSPeter Dunlap default: 732a6d42e7dSPeter Dunlap ASSERT(0); 733a6d42e7dSPeter Dunlap break; 734a6d42e7dSPeter Dunlap } 735a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 736a6d42e7dSPeter Dunlap 737a6d42e7dSPeter Dunlap return (IDM_STATUS_FAIL); 738a6d42e7dSPeter Dunlap } 739a6d42e7dSPeter Dunlap 740a6d42e7dSPeter Dunlap /* 741a6d42e7dSPeter Dunlap * idm_buf_rx_from_ini 742a6d42e7dSPeter Dunlap * 743a6d42e7dSPeter Dunlap * This is IDM's implementation of the 'Get_Data' operational primitive. 744a6d42e7dSPeter Dunlap * 745a6d42e7dSPeter Dunlap * This function is invoked by a target iSCSI layer to request its local 746a6d42e7dSPeter Dunlap * Datamover layer to retrieve certain data identified by the R2T PDU from the 747a6d42e7dSPeter Dunlap * peer iSCSI layer on the remote node. The retrieved Data-Out PDU will be 748a6d42e7dSPeter Dunlap * mapped to the respective buffer by the task tags (ITT & TTT). 749a6d42e7dSPeter Dunlap * The connection information, contents of an R2T PDU, DataDescriptor, BHS, and 750a6d42e7dSPeter Dunlap * the callback (idb->idb_buf_cb) notification for data transfer completion are 751a6d42e7dSPeter Dunlap * are provided as input. 752a6d42e7dSPeter Dunlap * 753a6d42e7dSPeter Dunlap * When an iSCSI node sends an R2T PDU to its local Datamover layer, the local 754a6d42e7dSPeter Dunlap * Datamover layer, the local and remote Datamover layers transparently bring 755a6d42e7dSPeter Dunlap * about the data transfer requested by the R2T PDU, without the participation 756a6d42e7dSPeter Dunlap * of the iSCSI layers. 757a6d42e7dSPeter Dunlap * 758a6d42e7dSPeter Dunlap * Using sockets, IDM transmits an R2T PDU for each buffer and the rx_data_out() 759a6d42e7dSPeter Dunlap * assembles the Data-Out PDUs into the buffer. iSER uses RDMA read. 760a6d42e7dSPeter Dunlap * 761a6d42e7dSPeter Dunlap */ 762a6d42e7dSPeter Dunlap idm_status_t 763a6d42e7dSPeter Dunlap idm_buf_rx_from_ini(idm_task_t *idt, idm_buf_t *idb, 764a6d42e7dSPeter Dunlap uint32_t offset, uint32_t xfer_len, 765a6d42e7dSPeter Dunlap idm_buf_cb_t idb_buf_cb, void *cb_arg) 766a6d42e7dSPeter Dunlap { 767a6d42e7dSPeter Dunlap idm_status_t rc; 768a6d42e7dSPeter Dunlap 769a6d42e7dSPeter Dunlap idb->idb_bufoffset = offset; 770a6d42e7dSPeter Dunlap idb->idb_xfer_len = xfer_len; 771a6d42e7dSPeter Dunlap idb->idb_buf_cb = idb_buf_cb; 772a6d42e7dSPeter Dunlap idb->idb_cb_arg = cb_arg; 773*30e7468fSPeter Dunlap gethrestime(&idb->idb_xfer_start); 774a6d42e7dSPeter Dunlap 775a6d42e7dSPeter Dunlap /* 776a6d42e7dSPeter Dunlap * "In" buf list is for "Data In" PDU's, "Out" buf list is for 777a6d42e7dSPeter Dunlap * "Data Out" PDU's 778a6d42e7dSPeter Dunlap */ 779a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 780a6d42e7dSPeter Dunlap switch (idt->idt_state) { 781a6d42e7dSPeter Dunlap case TASK_ACTIVE: 782a6d42e7dSPeter Dunlap idt->idt_rx_from_ini_start++; 783a6d42e7dSPeter Dunlap idm_task_hold(idt); 784a6d42e7dSPeter Dunlap idm_buf_bind_out_locked(idt, idb); 785a6d42e7dSPeter Dunlap idb->idb_in_transport = B_TRUE; 786a6d42e7dSPeter Dunlap rc = (*idt->idt_ic->ic_transport_ops->it_buf_rx_from_ini) 787a6d42e7dSPeter Dunlap (idt, idb); 788a6d42e7dSPeter Dunlap return (rc); 789a6d42e7dSPeter Dunlap case TASK_SUSPENDING: 790a6d42e7dSPeter Dunlap case TASK_SUSPENDED: 791a6d42e7dSPeter Dunlap case TASK_ABORTING: 792a6d42e7dSPeter Dunlap case TASK_ABORTED: 793a6d42e7dSPeter Dunlap /* 794a6d42e7dSPeter Dunlap * Bind buffer but don't start a transfer since the task 795a6d42e7dSPeter Dunlap * is suspended 796a6d42e7dSPeter Dunlap */ 797a6d42e7dSPeter Dunlap idm_buf_bind_out_locked(idt, idb); 798a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 799a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 800a6d42e7dSPeter Dunlap default: 801a6d42e7dSPeter Dunlap ASSERT(0); 802a6d42e7dSPeter Dunlap break; 803a6d42e7dSPeter Dunlap } 804a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 805a6d42e7dSPeter Dunlap 806a6d42e7dSPeter Dunlap return (IDM_STATUS_FAIL); 807a6d42e7dSPeter Dunlap } 808a6d42e7dSPeter Dunlap 809a6d42e7dSPeter Dunlap /* 810a6d42e7dSPeter Dunlap * idm_buf_tx_to_ini_done 811a6d42e7dSPeter Dunlap * 812a6d42e7dSPeter Dunlap * The transport calls this after it has completed a transfer requested by 813a6d42e7dSPeter Dunlap * a call to transport_buf_tx_to_ini 814a6d42e7dSPeter Dunlap * 815a6d42e7dSPeter Dunlap * Caller holds idt->idt_mutex, idt->idt_mutex is released before returning. 816a6d42e7dSPeter Dunlap * idt may be freed after the call to idb->idb_buf_cb. 817a6d42e7dSPeter Dunlap */ 818a6d42e7dSPeter Dunlap void 819a6d42e7dSPeter Dunlap idm_buf_tx_to_ini_done(idm_task_t *idt, idm_buf_t *idb, idm_status_t status) 820a6d42e7dSPeter Dunlap { 821a6d42e7dSPeter Dunlap ASSERT(mutex_owned(&idt->idt_mutex)); 822a6d42e7dSPeter Dunlap idb->idb_in_transport = B_FALSE; 823a6d42e7dSPeter Dunlap idb->idb_tx_thread = B_FALSE; 824a6d42e7dSPeter Dunlap idt->idt_tx_to_ini_done++; 825*30e7468fSPeter Dunlap gethrestime(&idb->idb_xfer_done); 826a6d42e7dSPeter Dunlap 827a6d42e7dSPeter Dunlap /* 828a6d42e7dSPeter Dunlap * idm_refcnt_rele may cause TASK_SUSPENDING --> TASK_SUSPENDED or 829a6d42e7dSPeter Dunlap * TASK_ABORTING --> TASK_ABORTED transistion if the refcount goes 830a6d42e7dSPeter Dunlap * to 0. 831a6d42e7dSPeter Dunlap */ 832a6d42e7dSPeter Dunlap idm_task_rele(idt); 833a6d42e7dSPeter Dunlap idb->idb_status = status; 834a6d42e7dSPeter Dunlap 835a6d42e7dSPeter Dunlap switch (idt->idt_state) { 836a6d42e7dSPeter Dunlap case TASK_ACTIVE: 837a6d42e7dSPeter Dunlap idm_buf_unbind_in_locked(idt, idb); 838a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 839a6d42e7dSPeter Dunlap (*idb->idb_buf_cb)(idb, status); 840a6d42e7dSPeter Dunlap return; 841a6d42e7dSPeter Dunlap case TASK_SUSPENDING: 842a6d42e7dSPeter Dunlap case TASK_SUSPENDED: 843a6d42e7dSPeter Dunlap case TASK_ABORTING: 844a6d42e7dSPeter Dunlap case TASK_ABORTED: 845a6d42e7dSPeter Dunlap /* 846a6d42e7dSPeter Dunlap * To keep things simple we will ignore the case where the 847a6d42e7dSPeter Dunlap * transfer was successful and leave all buffers bound to the 848a6d42e7dSPeter Dunlap * task. This allows us to also ignore the case where we've 849a6d42e7dSPeter Dunlap * been asked to abort a task but the last transfer of the 850a6d42e7dSPeter Dunlap * task has completed. IDM has no idea whether this was, in 851a6d42e7dSPeter Dunlap * fact, the last transfer of the task so it would be difficult 852a6d42e7dSPeter Dunlap * to handle this case. Everything should get sorted out again 853a6d42e7dSPeter Dunlap * after task reassignment is complete. 854a6d42e7dSPeter Dunlap * 855a6d42e7dSPeter Dunlap * In the case of TASK_ABORTING we could conceivably call the 856a6d42e7dSPeter Dunlap * buffer callback here but the timing of when the client's 857a6d42e7dSPeter Dunlap * client_task_aborted callback is invoked vs. when the client's 858a6d42e7dSPeter Dunlap * buffer callback gets invoked gets sticky. We don't want 859a6d42e7dSPeter Dunlap * the client to here from us again after the call to 860a6d42e7dSPeter Dunlap * client_task_aborted() but we don't want to give it a bunch 861a6d42e7dSPeter Dunlap * of failed buffer transfers until we've called 862a6d42e7dSPeter Dunlap * client_task_aborted(). Instead we'll just leave all the 863a6d42e7dSPeter Dunlap * buffers bound and allow the client to cleanup. 864a6d42e7dSPeter Dunlap */ 865a6d42e7dSPeter Dunlap break; 866a6d42e7dSPeter Dunlap default: 867a6d42e7dSPeter Dunlap ASSERT(0); 868a6d42e7dSPeter Dunlap } 869a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 870a6d42e7dSPeter Dunlap } 871a6d42e7dSPeter Dunlap 872a6d42e7dSPeter Dunlap /* 873a6d42e7dSPeter Dunlap * idm_buf_rx_from_ini_done 874a6d42e7dSPeter Dunlap * 875a6d42e7dSPeter Dunlap * The transport calls this after it has completed a transfer requested by 876a6d42e7dSPeter Dunlap * a call totransport_buf_tx_to_ini 877a6d42e7dSPeter Dunlap * 878a6d42e7dSPeter Dunlap * Caller holds idt->idt_mutex, idt->idt_mutex is released before returning. 879a6d42e7dSPeter Dunlap * idt may be freed after the call to idb->idb_buf_cb. 880a6d42e7dSPeter Dunlap */ 881a6d42e7dSPeter Dunlap void 882a6d42e7dSPeter Dunlap idm_buf_rx_from_ini_done(idm_task_t *idt, idm_buf_t *idb, idm_status_t status) 883a6d42e7dSPeter Dunlap { 884a6d42e7dSPeter Dunlap ASSERT(mutex_owned(&idt->idt_mutex)); 885a6d42e7dSPeter Dunlap idb->idb_in_transport = B_FALSE; 886a6d42e7dSPeter Dunlap idt->idt_rx_from_ini_done++; 887*30e7468fSPeter Dunlap gethrestime(&idb->idb_xfer_done); 888a6d42e7dSPeter Dunlap 889a6d42e7dSPeter Dunlap /* 890a6d42e7dSPeter Dunlap * idm_refcnt_rele may cause TASK_SUSPENDING --> TASK_SUSPENDED or 891a6d42e7dSPeter Dunlap * TASK_ABORTING --> TASK_ABORTED transistion if the refcount goes 892a6d42e7dSPeter Dunlap * to 0. 893a6d42e7dSPeter Dunlap */ 894a6d42e7dSPeter Dunlap idm_task_rele(idt); 895a6d42e7dSPeter Dunlap idb->idb_status = status; 896a6d42e7dSPeter Dunlap 897*30e7468fSPeter Dunlap if (status == IDM_STATUS_SUCCESS) { 898*30e7468fSPeter Dunlap /* 899*30e7468fSPeter Dunlap * Buffer should not contain the pattern. If it does then 900*30e7468fSPeter Dunlap * we did not get the data from the remote host. 901*30e7468fSPeter Dunlap */ 902*30e7468fSPeter Dunlap IDM_BUFPAT_CHECK(idb, idb->idb_xfer_len, BP_CHECK_ASSERT); 903*30e7468fSPeter Dunlap } 904*30e7468fSPeter Dunlap 905a6d42e7dSPeter Dunlap switch (idt->idt_state) { 906a6d42e7dSPeter Dunlap case TASK_ACTIVE: 907a6d42e7dSPeter Dunlap idm_buf_unbind_out_locked(idt, idb); 908a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 909a6d42e7dSPeter Dunlap (*idb->idb_buf_cb)(idb, status); 910a6d42e7dSPeter Dunlap return; 911a6d42e7dSPeter Dunlap case TASK_SUSPENDING: 912a6d42e7dSPeter Dunlap case TASK_SUSPENDED: 913a6d42e7dSPeter Dunlap case TASK_ABORTING: 914a6d42e7dSPeter Dunlap case TASK_ABORTED: 915a6d42e7dSPeter Dunlap /* 916a6d42e7dSPeter Dunlap * To keep things simple we will ignore the case where the 917a6d42e7dSPeter Dunlap * transfer was successful and leave all buffers bound to the 918a6d42e7dSPeter Dunlap * task. This allows us to also ignore the case where we've 919a6d42e7dSPeter Dunlap * been asked to abort a task but the last transfer of the 920a6d42e7dSPeter Dunlap * task has completed. IDM has no idea whether this was, in 921a6d42e7dSPeter Dunlap * fact, the last transfer of the task so it would be difficult 922a6d42e7dSPeter Dunlap * to handle this case. Everything should get sorted out again 923a6d42e7dSPeter Dunlap * after task reassignment is complete. 924a6d42e7dSPeter Dunlap * 925a6d42e7dSPeter Dunlap * In the case of TASK_ABORTING we could conceivably call the 926a6d42e7dSPeter Dunlap * buffer callback here but the timing of when the client's 927a6d42e7dSPeter Dunlap * client_task_aborted callback is invoked vs. when the client's 928a6d42e7dSPeter Dunlap * buffer callback gets invoked gets sticky. We don't want 929a6d42e7dSPeter Dunlap * the client to here from us again after the call to 930a6d42e7dSPeter Dunlap * client_task_aborted() but we don't want to give it a bunch 931a6d42e7dSPeter Dunlap * of failed buffer transfers until we've called 932a6d42e7dSPeter Dunlap * client_task_aborted(). Instead we'll just leave all the 933a6d42e7dSPeter Dunlap * buffers bound and allow the client to cleanup. 934a6d42e7dSPeter Dunlap */ 935a6d42e7dSPeter Dunlap break; 936a6d42e7dSPeter Dunlap default: 937a6d42e7dSPeter Dunlap ASSERT(0); 938a6d42e7dSPeter Dunlap } 939a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 940a6d42e7dSPeter Dunlap } 941a6d42e7dSPeter Dunlap 942a6d42e7dSPeter Dunlap /* 943a6d42e7dSPeter Dunlap * idm_buf_alloc 944a6d42e7dSPeter Dunlap * 945a6d42e7dSPeter Dunlap * Allocates a buffer handle and registers it for use with the transport 946a6d42e7dSPeter Dunlap * layer. If a buffer is not passed on bufptr, the buffer will be allocated 947a6d42e7dSPeter Dunlap * as well as the handle. 948a6d42e7dSPeter Dunlap * 949a6d42e7dSPeter Dunlap * ic - connection on which the buffer will be transferred 950a6d42e7dSPeter Dunlap * bufptr - allocate memory for buffer if NULL, else assign to buffer 951a6d42e7dSPeter Dunlap * buflen - length of buffer 952a6d42e7dSPeter Dunlap * 953a6d42e7dSPeter Dunlap * Returns idm_buf_t handle if successful, otherwise NULL 954a6d42e7dSPeter Dunlap */ 955a6d42e7dSPeter Dunlap idm_buf_t * 956a6d42e7dSPeter Dunlap idm_buf_alloc(idm_conn_t *ic, void *bufptr, uint64_t buflen) 957a6d42e7dSPeter Dunlap { 958a6d42e7dSPeter Dunlap idm_buf_t *buf = NULL; 959a6d42e7dSPeter Dunlap int rc; 960a6d42e7dSPeter Dunlap 961a6d42e7dSPeter Dunlap ASSERT(ic != NULL); 962a6d42e7dSPeter Dunlap ASSERT(idm.idm_buf_cache != NULL); 963a6d42e7dSPeter Dunlap ASSERT(buflen > 0); 964a6d42e7dSPeter Dunlap 965a6d42e7dSPeter Dunlap /* Don't allocate new buffers if we are not in FFP */ 966a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 967a6d42e7dSPeter Dunlap if (!ic->ic_ffp) { 968a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 969a6d42e7dSPeter Dunlap return (NULL); 970a6d42e7dSPeter Dunlap } 971a6d42e7dSPeter Dunlap 972a6d42e7dSPeter Dunlap 973a6d42e7dSPeter Dunlap idm_conn_hold(ic); 974a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 975a6d42e7dSPeter Dunlap 976a6d42e7dSPeter Dunlap buf = kmem_cache_alloc(idm.idm_buf_cache, KM_NOSLEEP); 977a6d42e7dSPeter Dunlap if (buf == NULL) { 978a6d42e7dSPeter Dunlap idm_conn_rele(ic); 979a6d42e7dSPeter Dunlap return (NULL); 980a6d42e7dSPeter Dunlap } 981a6d42e7dSPeter Dunlap 982a6d42e7dSPeter Dunlap buf->idb_ic = ic; 983a6d42e7dSPeter Dunlap buf->idb_buflen = buflen; 984a6d42e7dSPeter Dunlap buf->idb_exp_offset = 0; 985a6d42e7dSPeter Dunlap buf->idb_bufoffset = 0; 986a6d42e7dSPeter Dunlap buf->idb_xfer_len = 0; 987a6d42e7dSPeter Dunlap buf->idb_magic = IDM_BUF_MAGIC; 988*30e7468fSPeter Dunlap buf->idb_in_transport = B_FALSE; 989*30e7468fSPeter Dunlap buf->idb_bufbcopy = B_FALSE; 990a6d42e7dSPeter Dunlap 991a6d42e7dSPeter Dunlap /* 992a6d42e7dSPeter Dunlap * If bufptr is NULL, we have an implicit request to allocate 993a6d42e7dSPeter Dunlap * memory for this IDM buffer handle and register it for use 994a6d42e7dSPeter Dunlap * with the transport. To simplify this, and to give more freedom 995a6d42e7dSPeter Dunlap * to the transport layer for it's own buffer management, both of 996a6d42e7dSPeter Dunlap * these actions will take place in the transport layer. 997a6d42e7dSPeter Dunlap * If bufptr is set, then the caller has allocated memory (or more 998a6d42e7dSPeter Dunlap * likely it's been passed from an upper layer), and we need only 999a6d42e7dSPeter Dunlap * register the buffer for use with the transport layer. 1000a6d42e7dSPeter Dunlap */ 1001a6d42e7dSPeter Dunlap if (bufptr == NULL) { 1002a6d42e7dSPeter Dunlap /* 1003a6d42e7dSPeter Dunlap * Allocate a buffer from the transport layer (which 1004a6d42e7dSPeter Dunlap * will also register the buffer for use). 1005a6d42e7dSPeter Dunlap */ 1006a6d42e7dSPeter Dunlap rc = ic->ic_transport_ops->it_buf_alloc(buf, buflen); 1007a6d42e7dSPeter Dunlap if (rc != 0) { 1008a6d42e7dSPeter Dunlap idm_conn_rele(ic); 1009a6d42e7dSPeter Dunlap kmem_cache_free(idm.idm_buf_cache, buf); 1010a6d42e7dSPeter Dunlap return (NULL); 1011a6d42e7dSPeter Dunlap } 1012a6d42e7dSPeter Dunlap /* Set the bufalloc'd flag */ 1013a6d42e7dSPeter Dunlap buf->idb_bufalloc = B_TRUE; 1014a6d42e7dSPeter Dunlap } else { 1015a6d42e7dSPeter Dunlap /* 1016*30e7468fSPeter Dunlap * For large transfers, Set the passed bufptr into 1017*30e7468fSPeter Dunlap * the buf handle, and register the handle with the 1018*30e7468fSPeter Dunlap * transport layer. As memory registration with the 1019*30e7468fSPeter Dunlap * transport layer is a time/cpu intensive operation, 1020*30e7468fSPeter Dunlap * for small transfers (up to a pre-defined bcopy 1021*30e7468fSPeter Dunlap * threshold), use pre-registered memory buffers 1022*30e7468fSPeter Dunlap * and bcopy data at the appropriate time. 1023a6d42e7dSPeter Dunlap */ 1024a6d42e7dSPeter Dunlap buf->idb_buf = bufptr; 1025a6d42e7dSPeter Dunlap 1026a6d42e7dSPeter Dunlap rc = ic->ic_transport_ops->it_buf_setup(buf); 1027a6d42e7dSPeter Dunlap if (rc != 0) { 1028a6d42e7dSPeter Dunlap idm_conn_rele(ic); 1029a6d42e7dSPeter Dunlap kmem_cache_free(idm.idm_buf_cache, buf); 1030a6d42e7dSPeter Dunlap return (NULL); 1031a6d42e7dSPeter Dunlap } 1032*30e7468fSPeter Dunlap /* 1033*30e7468fSPeter Dunlap * The transport layer is now expected to set the idb_bufalloc 1034*30e7468fSPeter Dunlap * correctly to indicate if resources have been allocated. 1035*30e7468fSPeter Dunlap */ 1036a6d42e7dSPeter Dunlap } 1037a6d42e7dSPeter Dunlap 1038*30e7468fSPeter Dunlap IDM_BUFPAT_SET(buf); 1039a6d42e7dSPeter Dunlap 1040*30e7468fSPeter Dunlap return (buf); 1041a6d42e7dSPeter Dunlap } 1042a6d42e7dSPeter Dunlap 1043a6d42e7dSPeter Dunlap /* 1044a6d42e7dSPeter Dunlap * idm_buf_free 1045a6d42e7dSPeter Dunlap * 1046a6d42e7dSPeter Dunlap * Release a buffer handle along with the associated buffer that was allocated 1047a6d42e7dSPeter Dunlap * or assigned with idm_buf_alloc 1048a6d42e7dSPeter Dunlap */ 1049a6d42e7dSPeter Dunlap void 1050a6d42e7dSPeter Dunlap idm_buf_free(idm_buf_t *buf) 1051a6d42e7dSPeter Dunlap { 1052a6d42e7dSPeter Dunlap idm_conn_t *ic = buf->idb_ic; 1053a6d42e7dSPeter Dunlap 1054a6d42e7dSPeter Dunlap 1055a6d42e7dSPeter Dunlap buf->idb_task_binding = NULL; 1056a6d42e7dSPeter Dunlap 1057a6d42e7dSPeter Dunlap if (buf->idb_bufalloc) { 1058a6d42e7dSPeter Dunlap ic->ic_transport_ops->it_buf_free(buf); 1059a6d42e7dSPeter Dunlap } else { 1060a6d42e7dSPeter Dunlap ic->ic_transport_ops->it_buf_teardown(buf); 1061a6d42e7dSPeter Dunlap } 1062a6d42e7dSPeter Dunlap kmem_cache_free(idm.idm_buf_cache, buf); 1063a6d42e7dSPeter Dunlap idm_conn_rele(ic); 1064a6d42e7dSPeter Dunlap } 1065a6d42e7dSPeter Dunlap 1066a6d42e7dSPeter Dunlap /* 1067a6d42e7dSPeter Dunlap * idm_buf_bind_in 1068a6d42e7dSPeter Dunlap * 1069a6d42e7dSPeter Dunlap * This function associates a buffer with a task. This is only for use by the 1070a6d42e7dSPeter Dunlap * iSCSI initiator that will have only one buffer per transfer direction 1071a6d42e7dSPeter Dunlap * 1072a6d42e7dSPeter Dunlap */ 1073a6d42e7dSPeter Dunlap void 1074a6d42e7dSPeter Dunlap idm_buf_bind_in(idm_task_t *idt, idm_buf_t *buf) 1075a6d42e7dSPeter Dunlap { 1076a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1077a6d42e7dSPeter Dunlap idm_buf_bind_in_locked(idt, buf); 1078a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1079a6d42e7dSPeter Dunlap } 1080a6d42e7dSPeter Dunlap 1081a6d42e7dSPeter Dunlap static void 1082a6d42e7dSPeter Dunlap idm_buf_bind_in_locked(idm_task_t *idt, idm_buf_t *buf) 1083a6d42e7dSPeter Dunlap { 1084a6d42e7dSPeter Dunlap buf->idb_task_binding = idt; 1085a6d42e7dSPeter Dunlap buf->idb_ic = idt->idt_ic; 1086a6d42e7dSPeter Dunlap idm_listbuf_insert(&idt->idt_inbufv, buf); 1087a6d42e7dSPeter Dunlap } 1088a6d42e7dSPeter Dunlap 1089a6d42e7dSPeter Dunlap void 1090a6d42e7dSPeter Dunlap idm_buf_bind_out(idm_task_t *idt, idm_buf_t *buf) 1091a6d42e7dSPeter Dunlap { 1092*30e7468fSPeter Dunlap /* 1093*30e7468fSPeter Dunlap * For small transfers, the iSER transport delegates the IDM 1094*30e7468fSPeter Dunlap * layer to bcopy the SCSI Write data for faster IOPS. 1095*30e7468fSPeter Dunlap */ 1096*30e7468fSPeter Dunlap if (buf->idb_bufbcopy == B_TRUE) { 1097*30e7468fSPeter Dunlap 1098*30e7468fSPeter Dunlap bcopy(buf->idb_bufptr, buf->idb_buf, buf->idb_buflen); 1099*30e7468fSPeter Dunlap } 1100a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1101a6d42e7dSPeter Dunlap idm_buf_bind_out_locked(idt, buf); 1102a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1103a6d42e7dSPeter Dunlap } 1104a6d42e7dSPeter Dunlap 1105a6d42e7dSPeter Dunlap static void 1106a6d42e7dSPeter Dunlap idm_buf_bind_out_locked(idm_task_t *idt, idm_buf_t *buf) 1107a6d42e7dSPeter Dunlap { 1108a6d42e7dSPeter Dunlap buf->idb_task_binding = idt; 1109a6d42e7dSPeter Dunlap buf->idb_ic = idt->idt_ic; 1110a6d42e7dSPeter Dunlap idm_listbuf_insert(&idt->idt_outbufv, buf); 1111a6d42e7dSPeter Dunlap } 1112a6d42e7dSPeter Dunlap 1113a6d42e7dSPeter Dunlap void 1114a6d42e7dSPeter Dunlap idm_buf_unbind_in(idm_task_t *idt, idm_buf_t *buf) 1115a6d42e7dSPeter Dunlap { 1116*30e7468fSPeter Dunlap /* 1117*30e7468fSPeter Dunlap * For small transfers, the iSER transport delegates the IDM 1118*30e7468fSPeter Dunlap * layer to bcopy the SCSI Read data into the read buufer 1119*30e7468fSPeter Dunlap * for faster IOPS. 1120*30e7468fSPeter Dunlap */ 1121*30e7468fSPeter Dunlap if (buf->idb_bufbcopy == B_TRUE) { 1122*30e7468fSPeter Dunlap bcopy(buf->idb_buf, buf->idb_bufptr, buf->idb_buflen); 1123*30e7468fSPeter Dunlap } 1124a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1125a6d42e7dSPeter Dunlap idm_buf_unbind_in_locked(idt, buf); 1126a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1127a6d42e7dSPeter Dunlap } 1128a6d42e7dSPeter Dunlap 1129a6d42e7dSPeter Dunlap static void 1130a6d42e7dSPeter Dunlap idm_buf_unbind_in_locked(idm_task_t *idt, idm_buf_t *buf) 1131a6d42e7dSPeter Dunlap { 1132a6d42e7dSPeter Dunlap list_remove(&idt->idt_inbufv, buf); 1133a6d42e7dSPeter Dunlap } 1134a6d42e7dSPeter Dunlap 1135a6d42e7dSPeter Dunlap void 1136a6d42e7dSPeter Dunlap idm_buf_unbind_out(idm_task_t *idt, idm_buf_t *buf) 1137a6d42e7dSPeter Dunlap { 1138a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1139a6d42e7dSPeter Dunlap idm_buf_unbind_out_locked(idt, buf); 1140a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1141a6d42e7dSPeter Dunlap } 1142a6d42e7dSPeter Dunlap 1143a6d42e7dSPeter Dunlap static void 1144a6d42e7dSPeter Dunlap idm_buf_unbind_out_locked(idm_task_t *idt, idm_buf_t *buf) 1145a6d42e7dSPeter Dunlap { 1146a6d42e7dSPeter Dunlap list_remove(&idt->idt_outbufv, buf); 1147a6d42e7dSPeter Dunlap } 1148a6d42e7dSPeter Dunlap 1149a6d42e7dSPeter Dunlap /* 1150a6d42e7dSPeter Dunlap * idm_buf_find() will lookup the idm_buf_t based on the relative offset in the 1151a6d42e7dSPeter Dunlap * iSCSI PDU 1152a6d42e7dSPeter Dunlap */ 1153a6d42e7dSPeter Dunlap idm_buf_t * 1154a6d42e7dSPeter Dunlap idm_buf_find(void *lbuf, size_t data_offset) 1155a6d42e7dSPeter Dunlap { 1156a6d42e7dSPeter Dunlap idm_buf_t *idb; 1157a6d42e7dSPeter Dunlap list_t *lst = (list_t *)lbuf; 1158a6d42e7dSPeter Dunlap 1159a6d42e7dSPeter Dunlap /* iterate through the list to find the buffer */ 1160a6d42e7dSPeter Dunlap for (idb = list_head(lst); idb != NULL; idb = list_next(lst, idb)) { 1161a6d42e7dSPeter Dunlap 1162a6d42e7dSPeter Dunlap ASSERT((idb->idb_ic->ic_conn_type == CONN_TYPE_TGT) || 1163a6d42e7dSPeter Dunlap (idb->idb_bufoffset == 0)); 1164a6d42e7dSPeter Dunlap 1165a6d42e7dSPeter Dunlap if ((data_offset >= idb->idb_bufoffset) && 1166a6d42e7dSPeter Dunlap (data_offset < (idb->idb_bufoffset + idb->idb_buflen))) { 1167a6d42e7dSPeter Dunlap 1168a6d42e7dSPeter Dunlap return (idb); 1169a6d42e7dSPeter Dunlap } 1170a6d42e7dSPeter Dunlap } 1171a6d42e7dSPeter Dunlap 1172a6d42e7dSPeter Dunlap return (NULL); 1173a6d42e7dSPeter Dunlap } 1174a6d42e7dSPeter Dunlap 1175*30e7468fSPeter Dunlap void 1176*30e7468fSPeter Dunlap idm_bufpat_set(idm_buf_t *idb) 1177*30e7468fSPeter Dunlap { 1178*30e7468fSPeter Dunlap idm_bufpat_t *bufpat; 1179*30e7468fSPeter Dunlap int len, i; 1180*30e7468fSPeter Dunlap 1181*30e7468fSPeter Dunlap len = idb->idb_buflen; 1182*30e7468fSPeter Dunlap len = (len / sizeof (idm_bufpat_t)) * sizeof (idm_bufpat_t); 1183*30e7468fSPeter Dunlap 1184*30e7468fSPeter Dunlap bufpat = idb->idb_buf; 1185*30e7468fSPeter Dunlap for (i = 0; i < len; i += sizeof (idm_bufpat_t)) { 1186*30e7468fSPeter Dunlap bufpat->bufpat_idb = idb; 1187*30e7468fSPeter Dunlap bufpat->bufpat_bufmagic = IDM_BUF_MAGIC; 1188*30e7468fSPeter Dunlap bufpat->bufpat_offset = i; 1189*30e7468fSPeter Dunlap bufpat++; 1190*30e7468fSPeter Dunlap } 1191*30e7468fSPeter Dunlap } 1192*30e7468fSPeter Dunlap 1193*30e7468fSPeter Dunlap boolean_t 1194*30e7468fSPeter Dunlap idm_bufpat_check(idm_buf_t *idb, int check_len, idm_bufpat_check_type_t type) 1195*30e7468fSPeter Dunlap { 1196*30e7468fSPeter Dunlap idm_bufpat_t *bufpat; 1197*30e7468fSPeter Dunlap int len, i; 1198*30e7468fSPeter Dunlap 1199*30e7468fSPeter Dunlap len = (type == BP_CHECK_QUICK) ? sizeof (idm_bufpat_t) : check_len; 1200*30e7468fSPeter Dunlap len = (len / sizeof (idm_bufpat_t)) * sizeof (idm_bufpat_t); 1201*30e7468fSPeter Dunlap ASSERT(len <= idb->idb_buflen); 1202*30e7468fSPeter Dunlap bufpat = idb->idb_buf; 1203*30e7468fSPeter Dunlap 1204*30e7468fSPeter Dunlap /* 1205*30e7468fSPeter Dunlap * Don't check the pattern in buffers that came from outside IDM 1206*30e7468fSPeter Dunlap * (these will be buffers from the initiator that we opted not 1207*30e7468fSPeter Dunlap * to double-buffer) 1208*30e7468fSPeter Dunlap */ 1209*30e7468fSPeter Dunlap if (!idb->idb_bufalloc) 1210*30e7468fSPeter Dunlap return (B_FALSE); 1211*30e7468fSPeter Dunlap 1212*30e7468fSPeter Dunlap /* 1213*30e7468fSPeter Dunlap * Return true if we find the pattern anywhere in the buffer 1214*30e7468fSPeter Dunlap */ 1215*30e7468fSPeter Dunlap for (i = 0; i < len; i += sizeof (idm_bufpat_t)) { 1216*30e7468fSPeter Dunlap if (BUFPAT_MATCH(bufpat, idb)) { 1217*30e7468fSPeter Dunlap IDM_CONN_LOG(CE_WARN, "idm_bufpat_check found: " 1218*30e7468fSPeter Dunlap "idb %p bufpat %p " 1219*30e7468fSPeter Dunlap "bufpat_idb=%p bufmagic=%08x offset=%08x", 1220*30e7468fSPeter Dunlap (void *)idb, (void *)bufpat, bufpat->bufpat_idb, 1221*30e7468fSPeter Dunlap bufpat->bufpat_bufmagic, bufpat->bufpat_offset); 1222*30e7468fSPeter Dunlap DTRACE_PROBE2(bufpat__pattern__found, 1223*30e7468fSPeter Dunlap idm_buf_t *, idb, idm_bufpat_t *, bufpat); 1224*30e7468fSPeter Dunlap if (type == BP_CHECK_ASSERT) { 1225*30e7468fSPeter Dunlap ASSERT(0); 1226*30e7468fSPeter Dunlap } 1227*30e7468fSPeter Dunlap return (B_TRUE); 1228*30e7468fSPeter Dunlap } 1229*30e7468fSPeter Dunlap bufpat++; 1230*30e7468fSPeter Dunlap } 1231*30e7468fSPeter Dunlap 1232*30e7468fSPeter Dunlap return (B_FALSE); 1233*30e7468fSPeter Dunlap } 1234*30e7468fSPeter Dunlap 1235a6d42e7dSPeter Dunlap /* 1236a6d42e7dSPeter Dunlap * idm_task_alloc 1237a6d42e7dSPeter Dunlap * 1238a6d42e7dSPeter Dunlap * This function will allocate a idm_task_t structure. A task tag is also 1239a6d42e7dSPeter Dunlap * generated and saved in idt_tt. The task is not active. 1240a6d42e7dSPeter Dunlap */ 1241a6d42e7dSPeter Dunlap idm_task_t * 1242a6d42e7dSPeter Dunlap idm_task_alloc(idm_conn_t *ic) 1243a6d42e7dSPeter Dunlap { 1244a6d42e7dSPeter Dunlap idm_task_t *idt; 1245a6d42e7dSPeter Dunlap 1246a6d42e7dSPeter Dunlap ASSERT(ic != NULL); 1247a6d42e7dSPeter Dunlap 1248a6d42e7dSPeter Dunlap /* Don't allocate new tasks if we are not in FFP */ 1249a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 1250a6d42e7dSPeter Dunlap if (!ic->ic_ffp) { 1251a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 1252a6d42e7dSPeter Dunlap return (NULL); 1253a6d42e7dSPeter Dunlap } 1254a6d42e7dSPeter Dunlap idt = kmem_cache_alloc(idm.idm_task_cache, KM_NOSLEEP); 1255a6d42e7dSPeter Dunlap if (idt == NULL) { 1256a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 1257a6d42e7dSPeter Dunlap return (NULL); 1258a6d42e7dSPeter Dunlap } 1259a6d42e7dSPeter Dunlap 1260a6d42e7dSPeter Dunlap ASSERT(list_is_empty(&idt->idt_inbufv)); 1261a6d42e7dSPeter Dunlap ASSERT(list_is_empty(&idt->idt_outbufv)); 1262a6d42e7dSPeter Dunlap 1263a6d42e7dSPeter Dunlap idm_conn_hold(ic); 1264a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 1265a6d42e7dSPeter Dunlap 1266a6d42e7dSPeter Dunlap idt->idt_state = TASK_IDLE; 1267a6d42e7dSPeter Dunlap idt->idt_ic = ic; 1268a6d42e7dSPeter Dunlap idt->idt_private = NULL; 1269a6d42e7dSPeter Dunlap idt->idt_exp_datasn = 0; 1270a6d42e7dSPeter Dunlap idt->idt_exp_rttsn = 0; 1271a6d42e7dSPeter Dunlap 1272a6d42e7dSPeter Dunlap return (idt); 1273a6d42e7dSPeter Dunlap } 1274a6d42e7dSPeter Dunlap 1275a6d42e7dSPeter Dunlap /* 1276a6d42e7dSPeter Dunlap * idm_task_start 1277a6d42e7dSPeter Dunlap * 1278*30e7468fSPeter Dunlap * Mark the task active and initialize some stats. The caller 1279a6d42e7dSPeter Dunlap * sets up the idm_task_t structure with a prior call to idm_task_alloc(). 1280a6d42e7dSPeter Dunlap * The task service does not function as a task/work engine, it is the 1281a6d42e7dSPeter Dunlap * responsibility of the initiator to start the data transfer and free the 1282a6d42e7dSPeter Dunlap * resources. 1283a6d42e7dSPeter Dunlap */ 1284a6d42e7dSPeter Dunlap void 1285a6d42e7dSPeter Dunlap idm_task_start(idm_task_t *idt, uintptr_t handle) 1286a6d42e7dSPeter Dunlap { 1287a6d42e7dSPeter Dunlap ASSERT(idt != NULL); 1288a6d42e7dSPeter Dunlap 1289a6d42e7dSPeter Dunlap /* mark the task as ACTIVE */ 1290a6d42e7dSPeter Dunlap idt->idt_state = TASK_ACTIVE; 1291a6d42e7dSPeter Dunlap idt->idt_client_handle = handle; 1292a6d42e7dSPeter Dunlap idt->idt_tx_to_ini_start = idt->idt_tx_to_ini_done = 1293*30e7468fSPeter Dunlap idt->idt_rx_from_ini_start = idt->idt_rx_from_ini_done = 1294*30e7468fSPeter Dunlap idt->idt_tx_bytes = idt->idt_rx_bytes = 0; 1295a6d42e7dSPeter Dunlap } 1296a6d42e7dSPeter Dunlap 1297a6d42e7dSPeter Dunlap /* 1298a6d42e7dSPeter Dunlap * idm_task_done 1299a6d42e7dSPeter Dunlap * 1300*30e7468fSPeter Dunlap * This function sets the state to indicate that the task is no longer active. 1301a6d42e7dSPeter Dunlap */ 1302a6d42e7dSPeter Dunlap void 1303a6d42e7dSPeter Dunlap idm_task_done(idm_task_t *idt) 1304a6d42e7dSPeter Dunlap { 1305a6d42e7dSPeter Dunlap ASSERT(idt != NULL); 1306a6d42e7dSPeter Dunlap 1307*30e7468fSPeter Dunlap mutex_enter(&idt->idt_mutex); 1308a6d42e7dSPeter Dunlap idt->idt_state = TASK_IDLE; 1309*30e7468fSPeter Dunlap mutex_exit(&idt->idt_mutex); 1310*30e7468fSPeter Dunlap 1311*30e7468fSPeter Dunlap /* 1312*30e7468fSPeter Dunlap * Although unlikely it is possible for a reference to come in after 1313*30e7468fSPeter Dunlap * the client has decided the task is over but before we've marked 1314*30e7468fSPeter Dunlap * the task idle. One specific unavoidable scenario is the case where 1315*30e7468fSPeter Dunlap * received PDU with the matching ITT/TTT results in a successful 1316*30e7468fSPeter Dunlap * lookup of this task. We are at the mercy of the remote node in 1317*30e7468fSPeter Dunlap * that case so we need to handle it. Now that the task state 1318*30e7468fSPeter Dunlap * has changed no more references will occur so a simple call to 1319*30e7468fSPeter Dunlap * idm_refcnt_wait_ref should deal with the situation. 1320*30e7468fSPeter Dunlap */ 1321*30e7468fSPeter Dunlap idm_refcnt_wait_ref(&idt->idt_refcnt); 1322a6d42e7dSPeter Dunlap idm_refcnt_reset(&idt->idt_refcnt); 1323a6d42e7dSPeter Dunlap } 1324a6d42e7dSPeter Dunlap 1325a6d42e7dSPeter Dunlap /* 1326a6d42e7dSPeter Dunlap * idm_task_free 1327a6d42e7dSPeter Dunlap * 1328a6d42e7dSPeter Dunlap * This function will free the Task Tag and the memory allocated for the task 1329a6d42e7dSPeter Dunlap * idm_task_done should be called prior to this call 1330a6d42e7dSPeter Dunlap */ 1331a6d42e7dSPeter Dunlap void 1332a6d42e7dSPeter Dunlap idm_task_free(idm_task_t *idt) 1333a6d42e7dSPeter Dunlap { 1334*30e7468fSPeter Dunlap idm_conn_t *ic; 1335a6d42e7dSPeter Dunlap 1336a6d42e7dSPeter Dunlap ASSERT(idt != NULL); 1337*30e7468fSPeter Dunlap ASSERT(idt->idt_refcnt.ir_refcnt == 0); 1338a6d42e7dSPeter Dunlap ASSERT(idt->idt_state == TASK_IDLE); 1339a6d42e7dSPeter Dunlap 1340*30e7468fSPeter Dunlap ic = idt->idt_ic; 1341*30e7468fSPeter Dunlap 1342a6d42e7dSPeter Dunlap /* 1343a6d42e7dSPeter Dunlap * It's possible for items to still be in the idt_inbufv list if 1344a6d42e7dSPeter Dunlap * they were added after idm_task_cleanup was called. We rely on 1345a6d42e7dSPeter Dunlap * STMF to free all buffers associated with the task however STMF 1346a6d42e7dSPeter Dunlap * doesn't know that we have this reference to the buffers. 1347a6d42e7dSPeter Dunlap * Use list_create so that we don't end up with stale references 1348a6d42e7dSPeter Dunlap * to these buffers. 1349a6d42e7dSPeter Dunlap */ 1350a6d42e7dSPeter Dunlap list_create(&idt->idt_inbufv, sizeof (idm_buf_t), 1351a6d42e7dSPeter Dunlap offsetof(idm_buf_t, idb_buflink)); 1352a6d42e7dSPeter Dunlap list_create(&idt->idt_outbufv, sizeof (idm_buf_t), 1353a6d42e7dSPeter Dunlap offsetof(idm_buf_t, idb_buflink)); 1354a6d42e7dSPeter Dunlap 1355a6d42e7dSPeter Dunlap kmem_cache_free(idm.idm_task_cache, idt); 1356a6d42e7dSPeter Dunlap 1357a6d42e7dSPeter Dunlap idm_conn_rele(ic); 1358a6d42e7dSPeter Dunlap } 1359a6d42e7dSPeter Dunlap 1360a6d42e7dSPeter Dunlap /* 1361*30e7468fSPeter Dunlap * idm_task_find_common 1362*30e7468fSPeter Dunlap * common code for idm_task_find() and idm_task_find_and_complete() 1363a6d42e7dSPeter Dunlap */ 1364a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1365*30e7468fSPeter Dunlap static idm_task_t * 1366*30e7468fSPeter Dunlap idm_task_find_common(idm_conn_t *ic, uint32_t itt, uint32_t ttt, 1367*30e7468fSPeter Dunlap boolean_t complete) 1368a6d42e7dSPeter Dunlap { 1369a6d42e7dSPeter Dunlap uint32_t tt, client_handle; 1370a6d42e7dSPeter Dunlap idm_task_t *idt; 1371a6d42e7dSPeter Dunlap 1372a6d42e7dSPeter Dunlap /* 1373a6d42e7dSPeter Dunlap * Must match both itt and ttt. The table is indexed by itt 1374a6d42e7dSPeter Dunlap * for initiator connections and ttt for target connections. 1375a6d42e7dSPeter Dunlap */ 1376a6d42e7dSPeter Dunlap if (IDM_CONN_ISTGT(ic)) { 1377a6d42e7dSPeter Dunlap tt = ttt; 1378a6d42e7dSPeter Dunlap client_handle = itt; 1379a6d42e7dSPeter Dunlap } else { 1380a6d42e7dSPeter Dunlap tt = itt; 1381a6d42e7dSPeter Dunlap client_handle = ttt; 1382a6d42e7dSPeter Dunlap } 1383a6d42e7dSPeter Dunlap 1384a6d42e7dSPeter Dunlap rw_enter(&idm.idm_taskid_table_lock, RW_READER); 1385a6d42e7dSPeter Dunlap if (tt >= idm.idm_taskid_max) { 1386a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1387a6d42e7dSPeter Dunlap return (NULL); 1388a6d42e7dSPeter Dunlap } 1389a6d42e7dSPeter Dunlap 1390a6d42e7dSPeter Dunlap idt = idm.idm_taskid_table[tt]; 1391a6d42e7dSPeter Dunlap 1392a6d42e7dSPeter Dunlap if (idt != NULL) { 1393a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1394a6d42e7dSPeter Dunlap if ((idt->idt_state != TASK_ACTIVE) || 1395*30e7468fSPeter Dunlap (idt->idt_ic != ic) || 1396a6d42e7dSPeter Dunlap (IDM_CONN_ISTGT(ic) && 1397a6d42e7dSPeter Dunlap (idt->idt_client_handle != client_handle))) { 1398a6d42e7dSPeter Dunlap /* 1399*30e7468fSPeter Dunlap * Task doesn't match or task is aborting and 1400*30e7468fSPeter Dunlap * we don't want any more references. 1401a6d42e7dSPeter Dunlap */ 1402*30e7468fSPeter Dunlap if ((idt->idt_ic != ic) && 1403*30e7468fSPeter Dunlap (idt->idt_state == TASK_ACTIVE) && 1404*30e7468fSPeter Dunlap (IDM_CONN_ISINI(ic) || idt->idt_client_handle == 1405*30e7468fSPeter Dunlap client_handle)) { 1406*30e7468fSPeter Dunlap IDM_CONN_LOG(CE_WARN, 1407*30e7468fSPeter Dunlap "idm_task_find: wrong connection %p != %p", 1408*30e7468fSPeter Dunlap (void *)ic, (void *)idt->idt_ic); 1409*30e7468fSPeter Dunlap } 1410a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1411a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1412a6d42e7dSPeter Dunlap return (NULL); 1413a6d42e7dSPeter Dunlap } 1414a6d42e7dSPeter Dunlap idm_task_hold(idt); 1415*30e7468fSPeter Dunlap /* 1416*30e7468fSPeter Dunlap * Set the task state to TASK_COMPLETE so it can no longer 1417*30e7468fSPeter Dunlap * be found or aborted. 1418*30e7468fSPeter Dunlap */ 1419*30e7468fSPeter Dunlap if (B_TRUE == complete) 1420*30e7468fSPeter Dunlap idt->idt_state = TASK_COMPLETE; 1421a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1422a6d42e7dSPeter Dunlap } 1423a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1424a6d42e7dSPeter Dunlap 1425a6d42e7dSPeter Dunlap return (idt); 1426a6d42e7dSPeter Dunlap } 1427a6d42e7dSPeter Dunlap 1428*30e7468fSPeter Dunlap /* 1429*30e7468fSPeter Dunlap * This function looks up a task by task tag. 1430*30e7468fSPeter Dunlap */ 1431*30e7468fSPeter Dunlap idm_task_t * 1432*30e7468fSPeter Dunlap idm_task_find(idm_conn_t *ic, uint32_t itt, uint32_t ttt) 1433*30e7468fSPeter Dunlap { 1434*30e7468fSPeter Dunlap return (idm_task_find_common(ic, itt, ttt, B_FALSE)); 1435*30e7468fSPeter Dunlap } 1436*30e7468fSPeter Dunlap 1437*30e7468fSPeter Dunlap /* 1438*30e7468fSPeter Dunlap * This function looks up a task by task tag. If found, the task state 1439*30e7468fSPeter Dunlap * is atomically set to TASK_COMPLETE so it can longer be found or aborted. 1440*30e7468fSPeter Dunlap */ 1441*30e7468fSPeter Dunlap idm_task_t * 1442*30e7468fSPeter Dunlap idm_task_find_and_complete(idm_conn_t *ic, uint32_t itt, uint32_t ttt) 1443*30e7468fSPeter Dunlap { 1444*30e7468fSPeter Dunlap return (idm_task_find_common(ic, itt, ttt, B_TRUE)); 1445*30e7468fSPeter Dunlap } 1446*30e7468fSPeter Dunlap 1447a6d42e7dSPeter Dunlap /* 1448a6d42e7dSPeter Dunlap * idm_task_find_by_handle 1449a6d42e7dSPeter Dunlap * 1450a6d42e7dSPeter Dunlap * This function looks up a task by the client-private idt_client_handle. 1451a6d42e7dSPeter Dunlap * 1452a6d42e7dSPeter Dunlap * This function should NEVER be called in the performance path. It is 1453a6d42e7dSPeter Dunlap * intended strictly for error recovery/task management. 1454a6d42e7dSPeter Dunlap */ 1455a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1456a6d42e7dSPeter Dunlap void * 1457a6d42e7dSPeter Dunlap idm_task_find_by_handle(idm_conn_t *ic, uintptr_t handle) 1458a6d42e7dSPeter Dunlap { 1459a6d42e7dSPeter Dunlap idm_task_t *idt = NULL; 1460a6d42e7dSPeter Dunlap int idx = 0; 1461a6d42e7dSPeter Dunlap 1462a6d42e7dSPeter Dunlap rw_enter(&idm.idm_taskid_table_lock, RW_READER); 1463a6d42e7dSPeter Dunlap 1464a6d42e7dSPeter Dunlap for (idx = 0; idx < idm.idm_taskid_max; idx++) { 1465a6d42e7dSPeter Dunlap idt = idm.idm_taskid_table[idx]; 1466a6d42e7dSPeter Dunlap 1467a6d42e7dSPeter Dunlap if (idt == NULL) 1468a6d42e7dSPeter Dunlap continue; 1469a6d42e7dSPeter Dunlap 1470a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1471a6d42e7dSPeter Dunlap 1472a6d42e7dSPeter Dunlap if (idt->idt_state != TASK_ACTIVE) { 1473a6d42e7dSPeter Dunlap /* 1474a6d42e7dSPeter Dunlap * Task is either in suspend, abort, or already 1475a6d42e7dSPeter Dunlap * complete. 1476a6d42e7dSPeter Dunlap */ 1477a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1478a6d42e7dSPeter Dunlap continue; 1479a6d42e7dSPeter Dunlap } 1480a6d42e7dSPeter Dunlap 1481a6d42e7dSPeter Dunlap if (idt->idt_client_handle == handle) { 1482a6d42e7dSPeter Dunlap idm_task_hold(idt); 1483a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1484a6d42e7dSPeter Dunlap break; 1485a6d42e7dSPeter Dunlap } 1486a6d42e7dSPeter Dunlap 1487a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1488a6d42e7dSPeter Dunlap } 1489a6d42e7dSPeter Dunlap 1490a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1491a6d42e7dSPeter Dunlap 1492a6d42e7dSPeter Dunlap if ((idt == NULL) || (idx == idm.idm_taskid_max)) 1493a6d42e7dSPeter Dunlap return (NULL); 1494a6d42e7dSPeter Dunlap 1495a6d42e7dSPeter Dunlap return (idt->idt_private); 1496a6d42e7dSPeter Dunlap } 1497a6d42e7dSPeter Dunlap 1498a6d42e7dSPeter Dunlap void 1499a6d42e7dSPeter Dunlap idm_task_hold(idm_task_t *idt) 1500a6d42e7dSPeter Dunlap { 1501a6d42e7dSPeter Dunlap idm_refcnt_hold(&idt->idt_refcnt); 1502a6d42e7dSPeter Dunlap } 1503a6d42e7dSPeter Dunlap 1504a6d42e7dSPeter Dunlap void 1505a6d42e7dSPeter Dunlap idm_task_rele(idm_task_t *idt) 1506a6d42e7dSPeter Dunlap { 1507a6d42e7dSPeter Dunlap idm_refcnt_rele(&idt->idt_refcnt); 1508a6d42e7dSPeter Dunlap } 1509a6d42e7dSPeter Dunlap 1510a6d42e7dSPeter Dunlap void 1511a6d42e7dSPeter Dunlap idm_task_abort(idm_conn_t *ic, idm_task_t *idt, idm_abort_type_t abort_type) 1512a6d42e7dSPeter Dunlap { 1513a6d42e7dSPeter Dunlap idm_task_t *task; 1514a6d42e7dSPeter Dunlap int idx; 1515a6d42e7dSPeter Dunlap 1516a6d42e7dSPeter Dunlap /* 1517a6d42e7dSPeter Dunlap * Passing NULL as the task indicates that all tasks 1518a6d42e7dSPeter Dunlap * for this connection should be aborted. 1519a6d42e7dSPeter Dunlap */ 1520a6d42e7dSPeter Dunlap if (idt == NULL) { 1521a6d42e7dSPeter Dunlap /* 1522a6d42e7dSPeter Dunlap * Only the connection state machine should ask for 1523a6d42e7dSPeter Dunlap * all tasks to abort and this should never happen in FFP. 1524a6d42e7dSPeter Dunlap */ 1525a6d42e7dSPeter Dunlap ASSERT(!ic->ic_ffp); 1526a6d42e7dSPeter Dunlap rw_enter(&idm.idm_taskid_table_lock, RW_READER); 1527a6d42e7dSPeter Dunlap for (idx = 0; idx < idm.idm_taskid_max; idx++) { 1528a6d42e7dSPeter Dunlap task = idm.idm_taskid_table[idx]; 1529*30e7468fSPeter Dunlap if (task == NULL) 1530*30e7468fSPeter Dunlap continue; 1531*30e7468fSPeter Dunlap mutex_enter(&task->idt_mutex); 1532*30e7468fSPeter Dunlap if ((task->idt_state != TASK_IDLE) && 1533*30e7468fSPeter Dunlap (task->idt_state != TASK_COMPLETE) && 1534a6d42e7dSPeter Dunlap (task->idt_ic == ic)) { 1535a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1536a6d42e7dSPeter Dunlap idm_task_abort_one(ic, task, abort_type); 1537a6d42e7dSPeter Dunlap rw_enter(&idm.idm_taskid_table_lock, RW_READER); 1538*30e7468fSPeter Dunlap } else 1539*30e7468fSPeter Dunlap mutex_exit(&task->idt_mutex); 1540a6d42e7dSPeter Dunlap } 1541a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1542a6d42e7dSPeter Dunlap } else { 1543*30e7468fSPeter Dunlap mutex_enter(&idt->idt_mutex); 1544a6d42e7dSPeter Dunlap idm_task_abort_one(ic, idt, abort_type); 1545a6d42e7dSPeter Dunlap } 1546a6d42e7dSPeter Dunlap } 1547a6d42e7dSPeter Dunlap 1548a6d42e7dSPeter Dunlap static void 1549a6d42e7dSPeter Dunlap idm_task_abort_unref_cb(void *ref) 1550a6d42e7dSPeter Dunlap { 1551a6d42e7dSPeter Dunlap idm_task_t *idt = ref; 1552a6d42e7dSPeter Dunlap 1553a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1554a6d42e7dSPeter Dunlap switch (idt->idt_state) { 1555a6d42e7dSPeter Dunlap case TASK_SUSPENDING: 1556a6d42e7dSPeter Dunlap idt->idt_state = TASK_SUSPENDED; 1557a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1558a6d42e7dSPeter Dunlap idm_task_aborted(idt, IDM_STATUS_SUSPENDED); 1559a6d42e7dSPeter Dunlap return; 1560a6d42e7dSPeter Dunlap case TASK_ABORTING: 1561a6d42e7dSPeter Dunlap idt->idt_state = TASK_ABORTED; 1562a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1563a6d42e7dSPeter Dunlap idm_task_aborted(idt, IDM_STATUS_ABORTED); 1564a6d42e7dSPeter Dunlap return; 1565a6d42e7dSPeter Dunlap default: 1566a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1567a6d42e7dSPeter Dunlap ASSERT(0); 1568a6d42e7dSPeter Dunlap break; 1569a6d42e7dSPeter Dunlap } 1570a6d42e7dSPeter Dunlap } 1571a6d42e7dSPeter Dunlap 1572*30e7468fSPeter Dunlap /* 1573*30e7468fSPeter Dunlap * Abort the idm task. 1574*30e7468fSPeter Dunlap * Caller must hold the task mutex, which will be released before return 1575*30e7468fSPeter Dunlap */ 1576a6d42e7dSPeter Dunlap static void 1577a6d42e7dSPeter Dunlap idm_task_abort_one(idm_conn_t *ic, idm_task_t *idt, idm_abort_type_t abort_type) 1578a6d42e7dSPeter Dunlap { 1579a6d42e7dSPeter Dunlap /* Caller must hold connection mutex */ 1580*30e7468fSPeter Dunlap ASSERT(mutex_owned(&idt->idt_mutex)); 1581a6d42e7dSPeter Dunlap switch (idt->idt_state) { 1582a6d42e7dSPeter Dunlap case TASK_ACTIVE: 1583a6d42e7dSPeter Dunlap switch (abort_type) { 1584a6d42e7dSPeter Dunlap case AT_INTERNAL_SUSPEND: 1585a6d42e7dSPeter Dunlap /* Call transport to release any resources */ 1586a6d42e7dSPeter Dunlap idt->idt_state = TASK_SUSPENDING; 1587a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1588a6d42e7dSPeter Dunlap ic->ic_transport_ops->it_free_task_rsrc(idt); 1589a6d42e7dSPeter Dunlap 1590a6d42e7dSPeter Dunlap /* 1591a6d42e7dSPeter Dunlap * Wait for outstanding references. When all 1592a6d42e7dSPeter Dunlap * references are released the callback will call 1593a6d42e7dSPeter Dunlap * idm_task_aborted(). 1594a6d42e7dSPeter Dunlap */ 1595a6d42e7dSPeter Dunlap idm_refcnt_async_wait_ref(&idt->idt_refcnt, 1596a6d42e7dSPeter Dunlap &idm_task_abort_unref_cb); 1597a6d42e7dSPeter Dunlap return; 1598a6d42e7dSPeter Dunlap case AT_INTERNAL_ABORT: 1599a6d42e7dSPeter Dunlap case AT_TASK_MGMT_ABORT: 1600a6d42e7dSPeter Dunlap idt->idt_state = TASK_ABORTING; 1601a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1602a6d42e7dSPeter Dunlap ic->ic_transport_ops->it_free_task_rsrc(idt); 1603a6d42e7dSPeter Dunlap 1604a6d42e7dSPeter Dunlap /* 1605a6d42e7dSPeter Dunlap * Wait for outstanding references. When all 1606a6d42e7dSPeter Dunlap * references are released the callback will call 1607a6d42e7dSPeter Dunlap * idm_task_aborted(). 1608a6d42e7dSPeter Dunlap */ 1609a6d42e7dSPeter Dunlap idm_refcnt_async_wait_ref(&idt->idt_refcnt, 1610a6d42e7dSPeter Dunlap &idm_task_abort_unref_cb); 1611a6d42e7dSPeter Dunlap return; 1612a6d42e7dSPeter Dunlap default: 1613a6d42e7dSPeter Dunlap ASSERT(0); 1614a6d42e7dSPeter Dunlap } 1615a6d42e7dSPeter Dunlap break; 1616a6d42e7dSPeter Dunlap case TASK_SUSPENDING: 1617a6d42e7dSPeter Dunlap /* Already called transport_free_task_rsrc(); */ 1618a6d42e7dSPeter Dunlap switch (abort_type) { 1619a6d42e7dSPeter Dunlap case AT_INTERNAL_SUSPEND: 1620a6d42e7dSPeter Dunlap /* Already doing it */ 1621a6d42e7dSPeter Dunlap break; 1622a6d42e7dSPeter Dunlap case AT_INTERNAL_ABORT: 1623a6d42e7dSPeter Dunlap case AT_TASK_MGMT_ABORT: 1624a6d42e7dSPeter Dunlap idt->idt_state = TASK_ABORTING; 1625a6d42e7dSPeter Dunlap break; 1626a6d42e7dSPeter Dunlap default: 1627a6d42e7dSPeter Dunlap ASSERT(0); 1628a6d42e7dSPeter Dunlap } 1629a6d42e7dSPeter Dunlap break; 1630a6d42e7dSPeter Dunlap case TASK_SUSPENDED: 1631a6d42e7dSPeter Dunlap /* Already called transport_free_task_rsrc(); */ 1632a6d42e7dSPeter Dunlap switch (abort_type) { 1633a6d42e7dSPeter Dunlap case AT_INTERNAL_SUSPEND: 1634a6d42e7dSPeter Dunlap /* Already doing it */ 1635a6d42e7dSPeter Dunlap break; 1636a6d42e7dSPeter Dunlap case AT_INTERNAL_ABORT: 1637a6d42e7dSPeter Dunlap case AT_TASK_MGMT_ABORT: 1638a6d42e7dSPeter Dunlap idt->idt_state = TASK_ABORTING; 1639a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1640a6d42e7dSPeter Dunlap 1641a6d42e7dSPeter Dunlap /* 1642a6d42e7dSPeter Dunlap * We could probably call idm_task_aborted directly 1643a6d42e7dSPeter Dunlap * here but we may be holding the conn lock. It's 1644a6d42e7dSPeter Dunlap * easier to just switch contexts. Even though 1645a6d42e7dSPeter Dunlap * we shouldn't really have any references we'll 1646a6d42e7dSPeter Dunlap * set the state to TASK_ABORTING instead of 1647a6d42e7dSPeter Dunlap * TASK_ABORTED so we can use the same code path. 1648a6d42e7dSPeter Dunlap */ 1649a6d42e7dSPeter Dunlap idm_refcnt_async_wait_ref(&idt->idt_refcnt, 1650a6d42e7dSPeter Dunlap &idm_task_abort_unref_cb); 1651a6d42e7dSPeter Dunlap return; 1652a6d42e7dSPeter Dunlap default: 1653a6d42e7dSPeter Dunlap ASSERT(0); 1654a6d42e7dSPeter Dunlap } 1655a6d42e7dSPeter Dunlap break; 1656a6d42e7dSPeter Dunlap case TASK_ABORTING: 1657a6d42e7dSPeter Dunlap case TASK_ABORTED: 1658a6d42e7dSPeter Dunlap switch (abort_type) { 1659a6d42e7dSPeter Dunlap case AT_INTERNAL_SUSPEND: 1660a6d42e7dSPeter Dunlap /* We're already past this point... */ 1661a6d42e7dSPeter Dunlap case AT_INTERNAL_ABORT: 1662a6d42e7dSPeter Dunlap case AT_TASK_MGMT_ABORT: 1663a6d42e7dSPeter Dunlap /* Already doing it */ 1664a6d42e7dSPeter Dunlap break; 1665a6d42e7dSPeter Dunlap default: 1666a6d42e7dSPeter Dunlap ASSERT(0); 1667a6d42e7dSPeter Dunlap } 1668a6d42e7dSPeter Dunlap break; 1669a6d42e7dSPeter Dunlap case TASK_COMPLETE: 1670a6d42e7dSPeter Dunlap /* 1671a6d42e7dSPeter Dunlap * In this case, let it go. The status has already been 1672a6d42e7dSPeter Dunlap * sent (which may or may not get successfully transmitted) 1673a6d42e7dSPeter Dunlap * and we don't want to end up in a race between completing 1674a6d42e7dSPeter Dunlap * the status PDU and marking the task suspended. 1675a6d42e7dSPeter Dunlap */ 1676a6d42e7dSPeter Dunlap break; 1677a6d42e7dSPeter Dunlap default: 1678a6d42e7dSPeter Dunlap ASSERT(0); 1679a6d42e7dSPeter Dunlap } 1680a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1681a6d42e7dSPeter Dunlap } 1682a6d42e7dSPeter Dunlap 1683a6d42e7dSPeter Dunlap static void 1684a6d42e7dSPeter Dunlap idm_task_aborted(idm_task_t *idt, idm_status_t status) 1685a6d42e7dSPeter Dunlap { 1686a6d42e7dSPeter Dunlap (*idt->idt_ic->ic_conn_ops.icb_task_aborted)(idt, status); 1687a6d42e7dSPeter Dunlap } 1688a6d42e7dSPeter Dunlap 1689a6d42e7dSPeter Dunlap void 1690a6d42e7dSPeter Dunlap idm_task_cleanup(idm_task_t *idt) 1691a6d42e7dSPeter Dunlap { 1692a6d42e7dSPeter Dunlap idm_buf_t *idb, *next_idb; 1693a6d42e7dSPeter Dunlap list_t tmp_buflist; 1694a6d42e7dSPeter Dunlap ASSERT((idt->idt_state == TASK_SUSPENDED) || 1695a6d42e7dSPeter Dunlap (idt->idt_state == TASK_ABORTED)); 1696a6d42e7dSPeter Dunlap 1697a6d42e7dSPeter Dunlap list_create(&tmp_buflist, sizeof (idm_buf_t), 1698a6d42e7dSPeter Dunlap offsetof(idm_buf_t, idb_buflink)); 1699a6d42e7dSPeter Dunlap 1700a6d42e7dSPeter Dunlap /* 1701a6d42e7dSPeter Dunlap * Remove all the buffers from the task and add them to a 1702a6d42e7dSPeter Dunlap * temporary local list -- we do this so that we can hold 1703a6d42e7dSPeter Dunlap * the task lock and prevent the task from going away if 1704a6d42e7dSPeter Dunlap * the client decides to call idm_task_done/idm_task_free. 1705a6d42e7dSPeter Dunlap * This could happen during abort in iscsit. 1706a6d42e7dSPeter Dunlap */ 1707a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1708a6d42e7dSPeter Dunlap for (idb = list_head(&idt->idt_inbufv); 1709a6d42e7dSPeter Dunlap idb != NULL; 1710a6d42e7dSPeter Dunlap idb = next_idb) { 1711a6d42e7dSPeter Dunlap next_idb = list_next(&idt->idt_inbufv, idb); 1712a6d42e7dSPeter Dunlap idm_buf_unbind_in_locked(idt, idb); 1713a6d42e7dSPeter Dunlap list_insert_tail(&tmp_buflist, idb); 1714a6d42e7dSPeter Dunlap } 1715a6d42e7dSPeter Dunlap 1716a6d42e7dSPeter Dunlap for (idb = list_head(&idt->idt_outbufv); 1717a6d42e7dSPeter Dunlap idb != NULL; 1718a6d42e7dSPeter Dunlap idb = next_idb) { 1719a6d42e7dSPeter Dunlap next_idb = list_next(&idt->idt_outbufv, idb); 1720a6d42e7dSPeter Dunlap idm_buf_unbind_out_locked(idt, idb); 1721a6d42e7dSPeter Dunlap list_insert_tail(&tmp_buflist, idb); 1722a6d42e7dSPeter Dunlap } 1723a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1724a6d42e7dSPeter Dunlap 1725a6d42e7dSPeter Dunlap for (idb = list_head(&tmp_buflist); idb != NULL; idb = next_idb) { 1726a6d42e7dSPeter Dunlap next_idb = list_next(&tmp_buflist, idb); 1727a6d42e7dSPeter Dunlap list_remove(&tmp_buflist, idb); 1728a6d42e7dSPeter Dunlap (*idb->idb_buf_cb)(idb, IDM_STATUS_ABORTED); 1729a6d42e7dSPeter Dunlap } 1730a6d42e7dSPeter Dunlap list_destroy(&tmp_buflist); 1731a6d42e7dSPeter Dunlap } 1732a6d42e7dSPeter Dunlap 1733a6d42e7dSPeter Dunlap 1734a6d42e7dSPeter Dunlap /* 1735a6d42e7dSPeter Dunlap * idm_pdu_tx 1736a6d42e7dSPeter Dunlap * 1737a6d42e7dSPeter Dunlap * This is IDM's implementation of the 'Send_Control' operational primitive. 1738a6d42e7dSPeter Dunlap * This function is invoked by an initiator iSCSI layer requesting the transfer 1739a6d42e7dSPeter Dunlap * of a iSCSI command PDU or a target iSCSI layer requesting the transfer of a 1740a6d42e7dSPeter Dunlap * iSCSI response PDU. The PDU will be transmitted as-is by the local Datamover 1741a6d42e7dSPeter Dunlap * layer to the peer iSCSI layer in the remote iSCSI node. The connection info 1742a6d42e7dSPeter Dunlap * and iSCSI PDU-specific qualifiers namely BHS, AHS, DataDescriptor and Size 1743a6d42e7dSPeter Dunlap * are provided as input. 1744a6d42e7dSPeter Dunlap * 1745a6d42e7dSPeter Dunlap */ 1746a6d42e7dSPeter Dunlap void 1747a6d42e7dSPeter Dunlap idm_pdu_tx(idm_pdu_t *pdu) 1748a6d42e7dSPeter Dunlap { 1749a6d42e7dSPeter Dunlap idm_conn_t *ic = pdu->isp_ic; 1750a6d42e7dSPeter Dunlap iscsi_async_evt_hdr_t *async_evt; 1751a6d42e7dSPeter Dunlap 1752a6d42e7dSPeter Dunlap /* 1753a6d42e7dSPeter Dunlap * If we are in full-featured mode then route SCSI-related 1754a6d42e7dSPeter Dunlap * commands to the appropriate function vector without checking 1755a6d42e7dSPeter Dunlap * the connection state. We will only be in full-feature mode 1756a6d42e7dSPeter Dunlap * when we are in an acceptable state for SCSI PDU's. 1757a6d42e7dSPeter Dunlap * 1758a6d42e7dSPeter Dunlap * We also need to ensure that there are no PDU events outstanding 1759a6d42e7dSPeter Dunlap * on the state machine. Any non-SCSI PDU's received in full-feature 1760a6d42e7dSPeter Dunlap * mode will result in PDU events and until these have been handled 1761a6d42e7dSPeter Dunlap * we need to route all PDU's through the state machine as PDU 1762a6d42e7dSPeter Dunlap * events to maintain ordering. 1763a6d42e7dSPeter Dunlap * 1764a6d42e7dSPeter Dunlap * Note that IDM cannot enter FFP mode until it processes in 1765a6d42e7dSPeter Dunlap * its state machine the last xmit of the login process. 1766a6d42e7dSPeter Dunlap * Hence, checking the IDM_PDU_LOGIN_TX flag here would be 1767a6d42e7dSPeter Dunlap * superfluous. 1768a6d42e7dSPeter Dunlap */ 1769a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 1770a6d42e7dSPeter Dunlap if (ic->ic_ffp && (ic->ic_pdu_events == 0)) { 1771a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 1772a6d42e7dSPeter Dunlap switch (IDM_PDU_OPCODE(pdu)) { 1773a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_RSP: 1774a6d42e7dSPeter Dunlap /* Target only */ 1775a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1776a6d42e7dSPeter Dunlap return; 1777a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_TASK_MGT_RSP: 1778a6d42e7dSPeter Dunlap /* Target only */ 1779a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1780a6d42e7dSPeter Dunlap return; 1781a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_DATA_RSP: 1782a6d42e7dSPeter Dunlap /* Target only */ 1783a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1784a6d42e7dSPeter Dunlap return; 1785a6d42e7dSPeter Dunlap case ISCSI_OP_RTT_RSP: 1786a6d42e7dSPeter Dunlap /* Target only */ 1787a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1788a6d42e7dSPeter Dunlap return; 1789a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_IN: 1790a6d42e7dSPeter Dunlap /* Target only */ 1791a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1792a6d42e7dSPeter Dunlap return; 1793a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_RSP: 1794a6d42e7dSPeter Dunlap /* Target only */ 1795a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1796a6d42e7dSPeter Dunlap return; 1797a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_CMD: 1798a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_OUT: 1799a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_CMD: 1800a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_DATA: 1801a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_TASK_MGT_MSG: 1802a6d42e7dSPeter Dunlap /* Initiator only */ 1803a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1804a6d42e7dSPeter Dunlap return; 1805a6d42e7dSPeter Dunlap default: 1806a6d42e7dSPeter Dunlap break; 1807a6d42e7dSPeter Dunlap } 1808a6d42e7dSPeter Dunlap 1809a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 1810a6d42e7dSPeter Dunlap } 1811a6d42e7dSPeter Dunlap 1812a6d42e7dSPeter Dunlap /* 1813a6d42e7dSPeter Dunlap * Any PDU's processed outside of full-feature mode and non-SCSI 1814a6d42e7dSPeter Dunlap * PDU's in full-feature mode are handled by generating an 1815a6d42e7dSPeter Dunlap * event to the connection state machine. The state machine 1816a6d42e7dSPeter Dunlap * will validate the PDU against the current state and either 1817a6d42e7dSPeter Dunlap * transmit the PDU if the opcode is allowed or handle an 1818a6d42e7dSPeter Dunlap * error if the PDU is not allowed. 1819a6d42e7dSPeter Dunlap * 1820a6d42e7dSPeter Dunlap * This code-path will also generate any events that are implied 1821a6d42e7dSPeter Dunlap * by the PDU opcode. For example a "login response" with success 1822a6d42e7dSPeter Dunlap * status generates a CE_LOGOUT_SUCCESS_SND event. 1823a6d42e7dSPeter Dunlap */ 1824a6d42e7dSPeter Dunlap switch (IDM_PDU_OPCODE(pdu)) { 1825a6d42e7dSPeter Dunlap case ISCSI_OP_LOGIN_CMD: 1826a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_LOGIN_SND, (uintptr_t)pdu); 1827a6d42e7dSPeter Dunlap break; 1828a6d42e7dSPeter Dunlap case ISCSI_OP_LOGIN_RSP: 1829a6d42e7dSPeter Dunlap idm_parse_login_rsp(ic, pdu, /* Is RX */ B_FALSE); 1830a6d42e7dSPeter Dunlap break; 1831a6d42e7dSPeter Dunlap case ISCSI_OP_LOGOUT_CMD: 1832a6d42e7dSPeter Dunlap idm_parse_logout_req(ic, pdu, /* Is RX */ B_FALSE); 1833a6d42e7dSPeter Dunlap break; 1834a6d42e7dSPeter Dunlap case ISCSI_OP_LOGOUT_RSP: 1835a6d42e7dSPeter Dunlap idm_parse_logout_rsp(ic, pdu, /* Is RX */ B_FALSE); 1836a6d42e7dSPeter Dunlap break; 1837a6d42e7dSPeter Dunlap case ISCSI_OP_ASYNC_EVENT: 1838a6d42e7dSPeter Dunlap async_evt = (iscsi_async_evt_hdr_t *)pdu->isp_hdr; 1839a6d42e7dSPeter Dunlap switch (async_evt->async_event) { 1840a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_REQUEST_LOGOUT: 1841a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_ASYNC_LOGOUT_SND, 1842a6d42e7dSPeter Dunlap (uintptr_t)pdu); 1843a6d42e7dSPeter Dunlap break; 1844a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_DROPPING_CONNECTION: 1845a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_ASYNC_DROP_CONN_SND, 1846a6d42e7dSPeter Dunlap (uintptr_t)pdu); 1847a6d42e7dSPeter Dunlap break; 1848a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_DROPPING_ALL_CONNECTIONS: 1849a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_ASYNC_DROP_ALL_CONN_SND, 1850a6d42e7dSPeter Dunlap (uintptr_t)pdu); 1851a6d42e7dSPeter Dunlap break; 1852a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_SCSI_EVENT: 1853a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_PARAM_NEGOTIATION: 1854a6d42e7dSPeter Dunlap default: 1855a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, 1856a6d42e7dSPeter Dunlap (uintptr_t)pdu); 1857a6d42e7dSPeter Dunlap break; 1858a6d42e7dSPeter Dunlap } 1859a6d42e7dSPeter Dunlap break; 1860a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_RSP: 1861a6d42e7dSPeter Dunlap /* Target only */ 1862a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1863a6d42e7dSPeter Dunlap break; 1864a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_TASK_MGT_RSP: 1865a6d42e7dSPeter Dunlap /* Target only */ 1866a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1867a6d42e7dSPeter Dunlap break; 1868a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_DATA_RSP: 1869a6d42e7dSPeter Dunlap /* Target only */ 1870a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1871a6d42e7dSPeter Dunlap break; 1872a6d42e7dSPeter Dunlap case ISCSI_OP_RTT_RSP: 1873a6d42e7dSPeter Dunlap /* Target only */ 1874a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1875a6d42e7dSPeter Dunlap break; 1876a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_IN: 1877a6d42e7dSPeter Dunlap /* Target only */ 1878a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1879a6d42e7dSPeter Dunlap break; 1880a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_RSP: 1881a6d42e7dSPeter Dunlap /* Target only */ 1882a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1883a6d42e7dSPeter Dunlap break; 1884a6d42e7dSPeter Dunlap /* Initiator only */ 1885a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_CMD: 1886a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_TASK_MGT_MSG: 1887a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_DATA: 1888a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_OUT: 1889a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_CMD: 1890a6d42e7dSPeter Dunlap case ISCSI_OP_SNACK_CMD: 1891a6d42e7dSPeter Dunlap case ISCSI_OP_REJECT_MSG: 1892a6d42e7dSPeter Dunlap default: 1893a6d42e7dSPeter Dunlap /* 1894a6d42e7dSPeter Dunlap * Connection state machine will validate these PDU's against 1895a6d42e7dSPeter Dunlap * the current state. A PDU not allowed in the current 1896a6d42e7dSPeter Dunlap * state will cause a protocol error. 1897a6d42e7dSPeter Dunlap */ 1898a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1899a6d42e7dSPeter Dunlap break; 1900a6d42e7dSPeter Dunlap } 1901a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 1902a6d42e7dSPeter Dunlap } 1903a6d42e7dSPeter Dunlap 1904a6d42e7dSPeter Dunlap /* 1905*30e7468fSPeter Dunlap * Common allocation of a PDU along with memory for header and data. 1906a6d42e7dSPeter Dunlap */ 1907*30e7468fSPeter Dunlap static idm_pdu_t * 1908*30e7468fSPeter Dunlap idm_pdu_alloc_common(uint_t hdrlen, uint_t datalen, int sleepflag) 1909a6d42e7dSPeter Dunlap { 1910a6d42e7dSPeter Dunlap idm_pdu_t *result; 1911a6d42e7dSPeter Dunlap 1912a6d42e7dSPeter Dunlap /* 1913a6d42e7dSPeter Dunlap * IDM clients should cache these structures for performance 1914a6d42e7dSPeter Dunlap * critical paths. We can't cache effectively in IDM because we 1915a6d42e7dSPeter Dunlap * don't know the correct header and data size. 1916a6d42e7dSPeter Dunlap * 1917a6d42e7dSPeter Dunlap * Valid header length is assumed to be hdrlen and valid data 1918a6d42e7dSPeter Dunlap * length is assumed to be datalen. isp_hdrlen and isp_datalen 1919a6d42e7dSPeter Dunlap * can be adjusted after the PDU is returned if necessary. 1920a6d42e7dSPeter Dunlap */ 1921*30e7468fSPeter Dunlap result = kmem_zalloc(sizeof (idm_pdu_t) + hdrlen + datalen, sleepflag); 1922*30e7468fSPeter Dunlap if (result != NULL) { 1923*30e7468fSPeter Dunlap /* For idm_pdu_free sanity check */ 1924*30e7468fSPeter Dunlap result->isp_flags |= IDM_PDU_ALLOC; 1925*30e7468fSPeter Dunlap /* pointer arithmetic */ 1926*30e7468fSPeter Dunlap result->isp_hdr = (iscsi_hdr_t *)(result + 1); 1927*30e7468fSPeter Dunlap result->isp_hdrlen = hdrlen; 1928*30e7468fSPeter Dunlap result->isp_hdrbuflen = hdrlen; 1929*30e7468fSPeter Dunlap result->isp_transport_hdrlen = 0; 1930*30e7468fSPeter Dunlap result->isp_data = (uint8_t *)result->isp_hdr + hdrlen; 1931*30e7468fSPeter Dunlap result->isp_datalen = datalen; 1932*30e7468fSPeter Dunlap result->isp_databuflen = datalen; 1933*30e7468fSPeter Dunlap result->isp_magic = IDM_PDU_MAGIC; 1934*30e7468fSPeter Dunlap } 1935a6d42e7dSPeter Dunlap 1936a6d42e7dSPeter Dunlap return (result); 1937a6d42e7dSPeter Dunlap } 1938a6d42e7dSPeter Dunlap 1939*30e7468fSPeter Dunlap /* 1940*30e7468fSPeter Dunlap * Typical idm_pdu_alloc invocation, will block for resources. 1941*30e7468fSPeter Dunlap */ 1942*30e7468fSPeter Dunlap idm_pdu_t * 1943*30e7468fSPeter Dunlap idm_pdu_alloc(uint_t hdrlen, uint_t datalen) 1944*30e7468fSPeter Dunlap { 1945*30e7468fSPeter Dunlap return (idm_pdu_alloc_common(hdrlen, datalen, KM_SLEEP)); 1946*30e7468fSPeter Dunlap } 1947*30e7468fSPeter Dunlap 1948*30e7468fSPeter Dunlap /* 1949*30e7468fSPeter Dunlap * Non-blocking idm_pdu_alloc implementation, returns NULL if resources 1950*30e7468fSPeter Dunlap * are not available. Needed for transport-layer allocations which may 1951*30e7468fSPeter Dunlap * be invoking in interrupt context. 1952*30e7468fSPeter Dunlap */ 1953*30e7468fSPeter Dunlap idm_pdu_t * 1954*30e7468fSPeter Dunlap idm_pdu_alloc_nosleep(uint_t hdrlen, uint_t datalen) 1955*30e7468fSPeter Dunlap { 1956*30e7468fSPeter Dunlap return (idm_pdu_alloc_common(hdrlen, datalen, KM_NOSLEEP)); 1957*30e7468fSPeter Dunlap } 1958*30e7468fSPeter Dunlap 1959a6d42e7dSPeter Dunlap /* 1960a6d42e7dSPeter Dunlap * Free a PDU previously allocated with idm_pdu_alloc() including any 1961a6d42e7dSPeter Dunlap * header and data space allocated as part of the original request. 1962a6d42e7dSPeter Dunlap * Additional memory regions referenced by subsequent modification of 1963a6d42e7dSPeter Dunlap * the isp_hdr and/or isp_data fields will not be freed. 1964a6d42e7dSPeter Dunlap */ 1965a6d42e7dSPeter Dunlap void 1966a6d42e7dSPeter Dunlap idm_pdu_free(idm_pdu_t *pdu) 1967a6d42e7dSPeter Dunlap { 1968a6d42e7dSPeter Dunlap /* Make sure the structure was allocated using idm_pdu_alloc() */ 1969a6d42e7dSPeter Dunlap ASSERT(pdu->isp_flags & IDM_PDU_ALLOC); 1970a6d42e7dSPeter Dunlap kmem_free(pdu, 1971a6d42e7dSPeter Dunlap sizeof (idm_pdu_t) + pdu->isp_hdrbuflen + pdu->isp_databuflen); 1972a6d42e7dSPeter Dunlap } 1973a6d42e7dSPeter Dunlap 1974a6d42e7dSPeter Dunlap /* 1975a6d42e7dSPeter Dunlap * Initialize the connection, private and callback fields in a PDU. 1976a6d42e7dSPeter Dunlap */ 1977a6d42e7dSPeter Dunlap void 1978a6d42e7dSPeter Dunlap idm_pdu_init(idm_pdu_t *pdu, idm_conn_t *ic, void *private, idm_pdu_cb_t *cb) 1979a6d42e7dSPeter Dunlap { 1980a6d42e7dSPeter Dunlap /* 1981a6d42e7dSPeter Dunlap * idm_pdu_complete() will call idm_pdu_free if the callback is 1982a6d42e7dSPeter Dunlap * NULL. This will only work if the PDU was originally allocated 1983a6d42e7dSPeter Dunlap * with idm_pdu_alloc(). 1984a6d42e7dSPeter Dunlap */ 1985a6d42e7dSPeter Dunlap ASSERT((pdu->isp_flags & IDM_PDU_ALLOC) || 1986a6d42e7dSPeter Dunlap (cb != NULL)); 1987a6d42e7dSPeter Dunlap pdu->isp_magic = IDM_PDU_MAGIC; 1988a6d42e7dSPeter Dunlap pdu->isp_ic = ic; 1989a6d42e7dSPeter Dunlap pdu->isp_private = private; 1990a6d42e7dSPeter Dunlap pdu->isp_callback = cb; 1991a6d42e7dSPeter Dunlap } 1992a6d42e7dSPeter Dunlap 1993a6d42e7dSPeter Dunlap /* 1994a6d42e7dSPeter Dunlap * Initialize the header and header length field. This function should 1995a6d42e7dSPeter Dunlap * not be used to adjust the header length in a buffer allocated via 1996a6d42e7dSPeter Dunlap * pdu_pdu_alloc since it overwrites the existing header pointer. 1997a6d42e7dSPeter Dunlap */ 1998a6d42e7dSPeter Dunlap void 1999a6d42e7dSPeter Dunlap idm_pdu_init_hdr(idm_pdu_t *pdu, uint8_t *hdr, uint_t hdrlen) 2000a6d42e7dSPeter Dunlap { 2001a6d42e7dSPeter Dunlap pdu->isp_hdr = (iscsi_hdr_t *)((void *)hdr); 2002a6d42e7dSPeter Dunlap pdu->isp_hdrlen = hdrlen; 2003a6d42e7dSPeter Dunlap } 2004a6d42e7dSPeter Dunlap 2005a6d42e7dSPeter Dunlap /* 2006a6d42e7dSPeter Dunlap * Initialize the data and data length fields. This function should 2007a6d42e7dSPeter Dunlap * not be used to adjust the data length of a buffer allocated via 2008a6d42e7dSPeter Dunlap * idm_pdu_alloc since it overwrites the existing data pointer. 2009a6d42e7dSPeter Dunlap */ 2010a6d42e7dSPeter Dunlap void 2011a6d42e7dSPeter Dunlap idm_pdu_init_data(idm_pdu_t *pdu, uint8_t *data, uint_t datalen) 2012a6d42e7dSPeter Dunlap { 2013a6d42e7dSPeter Dunlap pdu->isp_data = data; 2014a6d42e7dSPeter Dunlap pdu->isp_datalen = datalen; 2015a6d42e7dSPeter Dunlap } 2016a6d42e7dSPeter Dunlap 2017a6d42e7dSPeter Dunlap void 2018a6d42e7dSPeter Dunlap idm_pdu_complete(idm_pdu_t *pdu, idm_status_t status) 2019a6d42e7dSPeter Dunlap { 2020a6d42e7dSPeter Dunlap if (pdu->isp_callback) { 2021a6d42e7dSPeter Dunlap pdu->isp_status = status; 2022a6d42e7dSPeter Dunlap (*pdu->isp_callback)(pdu, status); 2023a6d42e7dSPeter Dunlap } else { 2024a6d42e7dSPeter Dunlap idm_pdu_free(pdu); 2025a6d42e7dSPeter Dunlap } 2026a6d42e7dSPeter Dunlap } 2027a6d42e7dSPeter Dunlap 2028a6d42e7dSPeter Dunlap /* 2029a6d42e7dSPeter Dunlap * State machine auditing 2030a6d42e7dSPeter Dunlap */ 2031a6d42e7dSPeter Dunlap 2032a6d42e7dSPeter Dunlap void 2033a6d42e7dSPeter Dunlap idm_sm_audit_init(sm_audit_buf_t *audit_buf) 2034a6d42e7dSPeter Dunlap { 2035a6d42e7dSPeter Dunlap bzero(audit_buf, sizeof (sm_audit_buf_t)); 2036a6d42e7dSPeter Dunlap audit_buf->sab_max_index = SM_AUDIT_BUF_MAX_REC - 1; 2037a6d42e7dSPeter Dunlap } 2038a6d42e7dSPeter Dunlap 2039a6d42e7dSPeter Dunlap static 2040a6d42e7dSPeter Dunlap sm_audit_record_t * 2041a6d42e7dSPeter Dunlap idm_sm_audit_common(sm_audit_buf_t *audit_buf, sm_audit_record_type_t r_type, 2042a6d42e7dSPeter Dunlap sm_audit_sm_type_t sm_type, 2043a6d42e7dSPeter Dunlap int current_state) 2044a6d42e7dSPeter Dunlap { 2045a6d42e7dSPeter Dunlap sm_audit_record_t *sar; 2046a6d42e7dSPeter Dunlap 2047a6d42e7dSPeter Dunlap sar = audit_buf->sab_records; 2048a6d42e7dSPeter Dunlap sar += audit_buf->sab_index; 2049a6d42e7dSPeter Dunlap audit_buf->sab_index++; 2050a6d42e7dSPeter Dunlap audit_buf->sab_index &= audit_buf->sab_max_index; 2051a6d42e7dSPeter Dunlap 2052a6d42e7dSPeter Dunlap sar->sar_type = r_type; 2053a6d42e7dSPeter Dunlap gethrestime(&sar->sar_timestamp); 2054a6d42e7dSPeter Dunlap sar->sar_sm_type = sm_type; 2055a6d42e7dSPeter Dunlap sar->sar_state = current_state; 2056a6d42e7dSPeter Dunlap 2057a6d42e7dSPeter Dunlap return (sar); 2058a6d42e7dSPeter Dunlap } 2059a6d42e7dSPeter Dunlap 2060a6d42e7dSPeter Dunlap void 2061a6d42e7dSPeter Dunlap idm_sm_audit_event(sm_audit_buf_t *audit_buf, 2062a6d42e7dSPeter Dunlap sm_audit_sm_type_t sm_type, int current_state, 2063a6d42e7dSPeter Dunlap int event, uintptr_t event_info) 2064a6d42e7dSPeter Dunlap { 2065a6d42e7dSPeter Dunlap sm_audit_record_t *sar; 2066a6d42e7dSPeter Dunlap 2067a6d42e7dSPeter Dunlap sar = idm_sm_audit_common(audit_buf, SAR_STATE_EVENT, 2068a6d42e7dSPeter Dunlap sm_type, current_state); 2069a6d42e7dSPeter Dunlap sar->sar_event = event; 2070a6d42e7dSPeter Dunlap sar->sar_event_info = event_info; 2071a6d42e7dSPeter Dunlap } 2072a6d42e7dSPeter Dunlap 2073a6d42e7dSPeter Dunlap void 2074a6d42e7dSPeter Dunlap idm_sm_audit_state_change(sm_audit_buf_t *audit_buf, 2075a6d42e7dSPeter Dunlap sm_audit_sm_type_t sm_type, int current_state, int new_state) 2076a6d42e7dSPeter Dunlap { 2077a6d42e7dSPeter Dunlap sm_audit_record_t *sar; 2078a6d42e7dSPeter Dunlap 2079a6d42e7dSPeter Dunlap sar = idm_sm_audit_common(audit_buf, SAR_STATE_CHANGE, 2080a6d42e7dSPeter Dunlap sm_type, current_state); 2081a6d42e7dSPeter Dunlap sar->sar_new_state = new_state; 2082a6d42e7dSPeter Dunlap } 2083a6d42e7dSPeter Dunlap 2084a6d42e7dSPeter Dunlap 2085a6d42e7dSPeter Dunlap /* 2086a6d42e7dSPeter Dunlap * Object reference tracking 2087a6d42e7dSPeter Dunlap */ 2088a6d42e7dSPeter Dunlap 2089a6d42e7dSPeter Dunlap void 2090a6d42e7dSPeter Dunlap idm_refcnt_init(idm_refcnt_t *refcnt, void *referenced_obj) 2091a6d42e7dSPeter Dunlap { 2092a6d42e7dSPeter Dunlap bzero(refcnt, sizeof (*refcnt)); 2093a6d42e7dSPeter Dunlap idm_refcnt_reset(refcnt); 2094a6d42e7dSPeter Dunlap refcnt->ir_referenced_obj = referenced_obj; 2095a6d42e7dSPeter Dunlap bzero(&refcnt->ir_audit_buf, sizeof (refcnt_audit_buf_t)); 2096a6d42e7dSPeter Dunlap refcnt->ir_audit_buf.anb_max_index = REFCNT_AUDIT_BUF_MAX_REC - 1; 2097a6d42e7dSPeter Dunlap mutex_init(&refcnt->ir_mutex, NULL, MUTEX_DEFAULT, NULL); 2098a6d42e7dSPeter Dunlap cv_init(&refcnt->ir_cv, NULL, CV_DEFAULT, NULL); 2099a6d42e7dSPeter Dunlap } 2100a6d42e7dSPeter Dunlap 2101a6d42e7dSPeter Dunlap void 2102a6d42e7dSPeter Dunlap idm_refcnt_destroy(idm_refcnt_t *refcnt) 2103a6d42e7dSPeter Dunlap { 2104a6d42e7dSPeter Dunlap ASSERT(refcnt->ir_refcnt == 0); 2105a6d42e7dSPeter Dunlap cv_destroy(&refcnt->ir_cv); 2106a6d42e7dSPeter Dunlap mutex_destroy(&refcnt->ir_mutex); 2107a6d42e7dSPeter Dunlap } 2108a6d42e7dSPeter Dunlap 2109a6d42e7dSPeter Dunlap void 2110a6d42e7dSPeter Dunlap idm_refcnt_reset(idm_refcnt_t *refcnt) 2111a6d42e7dSPeter Dunlap { 2112a6d42e7dSPeter Dunlap refcnt->ir_waiting = REF_NOWAIT; 2113a6d42e7dSPeter Dunlap refcnt->ir_refcnt = 0; 2114a6d42e7dSPeter Dunlap } 2115a6d42e7dSPeter Dunlap 2116a6d42e7dSPeter Dunlap void 2117a6d42e7dSPeter Dunlap idm_refcnt_hold(idm_refcnt_t *refcnt) 2118a6d42e7dSPeter Dunlap { 2119a6d42e7dSPeter Dunlap /* 2120a6d42e7dSPeter Dunlap * Nothing should take a hold on an object after a call to 2121a6d42e7dSPeter Dunlap * idm_refcnt_wait_ref or idm_refcnd_async_wait_ref 2122a6d42e7dSPeter Dunlap */ 2123a6d42e7dSPeter Dunlap ASSERT(refcnt->ir_waiting == REF_NOWAIT); 2124a6d42e7dSPeter Dunlap 2125a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2126a6d42e7dSPeter Dunlap refcnt->ir_refcnt++; 2127a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2128a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2129a6d42e7dSPeter Dunlap } 2130a6d42e7dSPeter Dunlap 2131a6d42e7dSPeter Dunlap static void 2132a6d42e7dSPeter Dunlap idm_refcnt_unref_task(void *refcnt_void) 2133a6d42e7dSPeter Dunlap { 2134a6d42e7dSPeter Dunlap idm_refcnt_t *refcnt = refcnt_void; 2135a6d42e7dSPeter Dunlap 2136a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2137a6d42e7dSPeter Dunlap (*refcnt->ir_cb)(refcnt->ir_referenced_obj); 2138a6d42e7dSPeter Dunlap } 2139a6d42e7dSPeter Dunlap 2140a6d42e7dSPeter Dunlap void 2141a6d42e7dSPeter Dunlap idm_refcnt_rele(idm_refcnt_t *refcnt) 2142a6d42e7dSPeter Dunlap { 2143a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2144a6d42e7dSPeter Dunlap ASSERT(refcnt->ir_refcnt > 0); 2145a6d42e7dSPeter Dunlap refcnt->ir_refcnt--; 2146a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2147a6d42e7dSPeter Dunlap if (refcnt->ir_waiting == REF_NOWAIT) { 2148a6d42e7dSPeter Dunlap /* No one is waiting on this object */ 2149a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2150a6d42e7dSPeter Dunlap return; 2151a6d42e7dSPeter Dunlap } 2152a6d42e7dSPeter Dunlap 2153a6d42e7dSPeter Dunlap /* 2154a6d42e7dSPeter Dunlap * Someone is waiting for this object to go idle so check if 2155a6d42e7dSPeter Dunlap * refcnt is 0. Waiting on an object then later grabbing another 2156a6d42e7dSPeter Dunlap * reference is not allowed so we don't need to handle that case. 2157a6d42e7dSPeter Dunlap */ 2158a6d42e7dSPeter Dunlap if (refcnt->ir_refcnt == 0) { 2159a6d42e7dSPeter Dunlap if (refcnt->ir_waiting == REF_WAIT_ASYNC) { 2160a6d42e7dSPeter Dunlap if (taskq_dispatch(idm.idm_global_taskq, 2161a6d42e7dSPeter Dunlap &idm_refcnt_unref_task, refcnt, TQ_SLEEP) == NULL) { 2162a6d42e7dSPeter Dunlap cmn_err(CE_WARN, 2163a6d42e7dSPeter Dunlap "idm_refcnt_rele: Couldn't dispatch task"); 2164a6d42e7dSPeter Dunlap } 2165a6d42e7dSPeter Dunlap } else if (refcnt->ir_waiting == REF_WAIT_SYNC) { 2166a6d42e7dSPeter Dunlap cv_signal(&refcnt->ir_cv); 2167a6d42e7dSPeter Dunlap } 2168a6d42e7dSPeter Dunlap } 2169a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2170a6d42e7dSPeter Dunlap } 2171a6d42e7dSPeter Dunlap 2172a6d42e7dSPeter Dunlap void 2173a6d42e7dSPeter Dunlap idm_refcnt_rele_and_destroy(idm_refcnt_t *refcnt, idm_refcnt_cb_t *cb_func) 2174a6d42e7dSPeter Dunlap { 2175a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2176a6d42e7dSPeter Dunlap ASSERT(refcnt->ir_refcnt > 0); 2177a6d42e7dSPeter Dunlap refcnt->ir_refcnt--; 2178a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2179a6d42e7dSPeter Dunlap 2180a6d42e7dSPeter Dunlap /* 2181a6d42e7dSPeter Dunlap * Someone is waiting for this object to go idle so check if 2182a6d42e7dSPeter Dunlap * refcnt is 0. Waiting on an object then later grabbing another 2183a6d42e7dSPeter Dunlap * reference is not allowed so we don't need to handle that case. 2184a6d42e7dSPeter Dunlap */ 2185a6d42e7dSPeter Dunlap if (refcnt->ir_refcnt == 0) { 2186a6d42e7dSPeter Dunlap refcnt->ir_cb = cb_func; 2187a6d42e7dSPeter Dunlap refcnt->ir_waiting = REF_WAIT_ASYNC; 2188a6d42e7dSPeter Dunlap if (taskq_dispatch(idm.idm_global_taskq, 2189a6d42e7dSPeter Dunlap &idm_refcnt_unref_task, refcnt, TQ_SLEEP) == NULL) { 2190a6d42e7dSPeter Dunlap cmn_err(CE_WARN, 2191a6d42e7dSPeter Dunlap "idm_refcnt_rele: Couldn't dispatch task"); 2192a6d42e7dSPeter Dunlap } 2193a6d42e7dSPeter Dunlap } 2194a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2195a6d42e7dSPeter Dunlap } 2196a6d42e7dSPeter Dunlap 2197a6d42e7dSPeter Dunlap void 2198a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(idm_refcnt_t *refcnt) 2199a6d42e7dSPeter Dunlap { 2200a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2201a6d42e7dSPeter Dunlap refcnt->ir_waiting = REF_WAIT_SYNC; 2202a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2203a6d42e7dSPeter Dunlap while (refcnt->ir_refcnt != 0) 2204a6d42e7dSPeter Dunlap cv_wait(&refcnt->ir_cv, &refcnt->ir_mutex); 2205a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2206a6d42e7dSPeter Dunlap } 2207a6d42e7dSPeter Dunlap 2208a6d42e7dSPeter Dunlap void 2209a6d42e7dSPeter Dunlap idm_refcnt_async_wait_ref(idm_refcnt_t *refcnt, idm_refcnt_cb_t *cb_func) 2210a6d42e7dSPeter Dunlap { 2211a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2212a6d42e7dSPeter Dunlap refcnt->ir_waiting = REF_WAIT_ASYNC; 2213a6d42e7dSPeter Dunlap refcnt->ir_cb = cb_func; 2214a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2215a6d42e7dSPeter Dunlap /* 2216a6d42e7dSPeter Dunlap * It's possible we don't have any references. To make things easier 2217a6d42e7dSPeter Dunlap * on the caller use a taskq to call the callback instead of 2218a6d42e7dSPeter Dunlap * calling it synchronously 2219a6d42e7dSPeter Dunlap */ 2220a6d42e7dSPeter Dunlap if (refcnt->ir_refcnt == 0) { 2221a6d42e7dSPeter Dunlap if (taskq_dispatch(idm.idm_global_taskq, 2222a6d42e7dSPeter Dunlap &idm_refcnt_unref_task, refcnt, TQ_SLEEP) == NULL) { 2223a6d42e7dSPeter Dunlap cmn_err(CE_WARN, 2224a6d42e7dSPeter Dunlap "idm_refcnt_async_wait_ref: " 2225a6d42e7dSPeter Dunlap "Couldn't dispatch task"); 2226a6d42e7dSPeter Dunlap } 2227a6d42e7dSPeter Dunlap } 2228a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2229a6d42e7dSPeter Dunlap } 2230a6d42e7dSPeter Dunlap 2231a6d42e7dSPeter Dunlap void 2232a6d42e7dSPeter Dunlap idm_refcnt_destroy_unref_obj(idm_refcnt_t *refcnt, 2233a6d42e7dSPeter Dunlap idm_refcnt_cb_t *cb_func) 2234a6d42e7dSPeter Dunlap { 2235a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2236a6d42e7dSPeter Dunlap if (refcnt->ir_refcnt == 0) { 2237a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2238a6d42e7dSPeter Dunlap (*cb_func)(refcnt->ir_referenced_obj); 2239a6d42e7dSPeter Dunlap return; 2240a6d42e7dSPeter Dunlap } 2241a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2242a6d42e7dSPeter Dunlap } 2243a6d42e7dSPeter Dunlap 2244a6d42e7dSPeter Dunlap void 2245a6d42e7dSPeter Dunlap idm_conn_hold(idm_conn_t *ic) 2246a6d42e7dSPeter Dunlap { 2247a6d42e7dSPeter Dunlap idm_refcnt_hold(&ic->ic_refcnt); 2248a6d42e7dSPeter Dunlap } 2249a6d42e7dSPeter Dunlap 2250a6d42e7dSPeter Dunlap void 2251a6d42e7dSPeter Dunlap idm_conn_rele(idm_conn_t *ic) 2252a6d42e7dSPeter Dunlap { 2253a6d42e7dSPeter Dunlap idm_refcnt_rele(&ic->ic_refcnt); 2254a6d42e7dSPeter Dunlap } 2255a6d42e7dSPeter Dunlap 2256a6d42e7dSPeter Dunlap 2257a6d42e7dSPeter Dunlap static int 2258a6d42e7dSPeter Dunlap _idm_init(void) 2259a6d42e7dSPeter Dunlap { 2260a6d42e7dSPeter Dunlap /* Initialize the rwlock for the taskid table */ 2261a6d42e7dSPeter Dunlap rw_init(&idm.idm_taskid_table_lock, NULL, RW_DRIVER, NULL); 2262a6d42e7dSPeter Dunlap 2263a6d42e7dSPeter Dunlap /* Initialize the global mutex and taskq */ 2264a6d42e7dSPeter Dunlap mutex_init(&idm.idm_global_mutex, NULL, MUTEX_DEFAULT, NULL); 2265a6d42e7dSPeter Dunlap 2266a6d42e7dSPeter Dunlap cv_init(&idm.idm_tgt_svc_cv, NULL, CV_DEFAULT, NULL); 2267a6d42e7dSPeter Dunlap cv_init(&idm.idm_wd_cv, NULL, CV_DEFAULT, NULL); 2268a6d42e7dSPeter Dunlap 2269*30e7468fSPeter Dunlap /* 2270*30e7468fSPeter Dunlap * The maximum allocation needs to be high here since there can be 2271*30e7468fSPeter Dunlap * many concurrent tasks using the global taskq. 2272*30e7468fSPeter Dunlap */ 2273a6d42e7dSPeter Dunlap idm.idm_global_taskq = taskq_create("idm_global_taskq", 1, minclsyspri, 2274*30e7468fSPeter Dunlap 128, 16384, TASKQ_PREPOPULATE); 2275a6d42e7dSPeter Dunlap if (idm.idm_global_taskq == NULL) { 2276a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_wd_cv); 2277a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_tgt_svc_cv); 2278a6d42e7dSPeter Dunlap mutex_destroy(&idm.idm_global_mutex); 2279a6d42e7dSPeter Dunlap rw_destroy(&idm.idm_taskid_table_lock); 2280a6d42e7dSPeter Dunlap return (ENOMEM); 2281a6d42e7dSPeter Dunlap } 2282a6d42e7dSPeter Dunlap 2283a41f9819SJames Moore /* Start watchdog thread */ 2284a6d42e7dSPeter Dunlap idm.idm_wd_thread = thread_create(NULL, 0, 2285a6d42e7dSPeter Dunlap idm_wd_thread, NULL, 0, &p0, TS_RUN, minclsyspri); 2286a6d42e7dSPeter Dunlap if (idm.idm_wd_thread == NULL) { 2287a6d42e7dSPeter Dunlap /* Couldn't create the watchdog thread */ 2288a6d42e7dSPeter Dunlap taskq_destroy(idm.idm_global_taskq); 2289a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_wd_cv); 2290a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_tgt_svc_cv); 2291a6d42e7dSPeter Dunlap mutex_destroy(&idm.idm_global_mutex); 2292a6d42e7dSPeter Dunlap rw_destroy(&idm.idm_taskid_table_lock); 2293a6d42e7dSPeter Dunlap return (ENOMEM); 2294a6d42e7dSPeter Dunlap } 2295a6d42e7dSPeter Dunlap 2296a41f9819SJames Moore /* Pause until the watchdog thread is running */ 2297a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 2298a6d42e7dSPeter Dunlap while (!idm.idm_wd_thread_running) 2299a6d42e7dSPeter Dunlap cv_wait(&idm.idm_wd_cv, &idm.idm_global_mutex); 2300a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 2301a6d42e7dSPeter Dunlap 2302a6d42e7dSPeter Dunlap /* 2303a6d42e7dSPeter Dunlap * Allocate the task ID table and set "next" to 0. 2304a6d42e7dSPeter Dunlap */ 2305a6d42e7dSPeter Dunlap 2306a6d42e7dSPeter Dunlap idm.idm_taskid_max = idm_max_taskids; 2307a6d42e7dSPeter Dunlap idm.idm_taskid_table = (idm_task_t **) 2308a6d42e7dSPeter Dunlap kmem_zalloc(idm.idm_taskid_max * sizeof (idm_task_t *), KM_SLEEP); 2309a6d42e7dSPeter Dunlap idm.idm_taskid_next = 0; 2310a6d42e7dSPeter Dunlap 2311a6d42e7dSPeter Dunlap /* Create the global buffer and task kmem caches */ 2312a6d42e7dSPeter Dunlap idm.idm_buf_cache = kmem_cache_create("idm_buf_cache", 2313a6d42e7dSPeter Dunlap sizeof (idm_buf_t), 8, NULL, NULL, NULL, NULL, NULL, KM_SLEEP); 2314a6d42e7dSPeter Dunlap 2315a6d42e7dSPeter Dunlap /* 2316a6d42e7dSPeter Dunlap * Note, we're explicitly allocating an additional iSER header- 2317a6d42e7dSPeter Dunlap * sized chunk for each of these elements. See idm_task_constructor(). 2318a6d42e7dSPeter Dunlap */ 2319a6d42e7dSPeter Dunlap idm.idm_task_cache = kmem_cache_create("idm_task_cache", 2320a6d42e7dSPeter Dunlap sizeof (idm_task_t) + IDM_TRANSPORT_HEADER_LENGTH, 8, 2321a6d42e7dSPeter Dunlap &idm_task_constructor, &idm_task_destructor, 2322a6d42e7dSPeter Dunlap NULL, NULL, NULL, KM_SLEEP); 2323a6d42e7dSPeter Dunlap 2324a6d42e7dSPeter Dunlap /* Create the service and connection context lists */ 2325a6d42e7dSPeter Dunlap list_create(&idm.idm_tgt_svc_list, sizeof (idm_svc_t), 2326a6d42e7dSPeter Dunlap offsetof(idm_svc_t, is_list_node)); 2327a6d42e7dSPeter Dunlap list_create(&idm.idm_tgt_conn_list, sizeof (idm_conn_t), 2328a6d42e7dSPeter Dunlap offsetof(idm_conn_t, ic_list_node)); 2329a6d42e7dSPeter Dunlap list_create(&idm.idm_ini_conn_list, sizeof (idm_conn_t), 2330a6d42e7dSPeter Dunlap offsetof(idm_conn_t, ic_list_node)); 2331a6d42e7dSPeter Dunlap 2332a6d42e7dSPeter Dunlap /* Initialize the native sockets transport */ 2333a6d42e7dSPeter Dunlap idm_so_init(&idm_transport_list[IDM_TRANSPORT_TYPE_SOCKETS]); 2334a6d42e7dSPeter Dunlap 2335a6d42e7dSPeter Dunlap /* Create connection ID pool */ 2336a6d42e7dSPeter Dunlap (void) idm_idpool_create(&idm.idm_conn_id_pool); 2337a6d42e7dSPeter Dunlap 2338a6d42e7dSPeter Dunlap return (DDI_SUCCESS); 2339a6d42e7dSPeter Dunlap } 2340a6d42e7dSPeter Dunlap 2341a6d42e7dSPeter Dunlap static int 2342a6d42e7dSPeter Dunlap _idm_fini(void) 2343a6d42e7dSPeter Dunlap { 2344a6d42e7dSPeter Dunlap if (!list_is_empty(&idm.idm_ini_conn_list) || 2345a6d42e7dSPeter Dunlap !list_is_empty(&idm.idm_tgt_conn_list) || 2346a6d42e7dSPeter Dunlap !list_is_empty(&idm.idm_tgt_svc_list)) { 2347a6d42e7dSPeter Dunlap return (EBUSY); 2348a6d42e7dSPeter Dunlap } 2349a6d42e7dSPeter Dunlap 2350a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 2351a6d42e7dSPeter Dunlap idm.idm_wd_thread_running = B_FALSE; 2352a6d42e7dSPeter Dunlap cv_signal(&idm.idm_wd_cv); 2353a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 2354a6d42e7dSPeter Dunlap 2355a6d42e7dSPeter Dunlap thread_join(idm.idm_wd_thread_did); 2356a6d42e7dSPeter Dunlap 2357a6d42e7dSPeter Dunlap idm_idpool_destroy(&idm.idm_conn_id_pool); 2358*30e7468fSPeter Dunlap 2359*30e7468fSPeter Dunlap /* Close any LDI handles we have open on transport drivers */ 2360*30e7468fSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 2361*30e7468fSPeter Dunlap idm_transport_teardown(); 2362*30e7468fSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 2363*30e7468fSPeter Dunlap 2364*30e7468fSPeter Dunlap /* Teardown the native sockets transport */ 2365a6d42e7dSPeter Dunlap idm_so_fini(); 2366*30e7468fSPeter Dunlap 2367a6d42e7dSPeter Dunlap list_destroy(&idm.idm_ini_conn_list); 2368a6d42e7dSPeter Dunlap list_destroy(&idm.idm_tgt_conn_list); 2369a6d42e7dSPeter Dunlap list_destroy(&idm.idm_tgt_svc_list); 2370a6d42e7dSPeter Dunlap kmem_cache_destroy(idm.idm_task_cache); 2371a6d42e7dSPeter Dunlap kmem_cache_destroy(idm.idm_buf_cache); 2372a6d42e7dSPeter Dunlap kmem_free(idm.idm_taskid_table, 2373a6d42e7dSPeter Dunlap idm.idm_taskid_max * sizeof (idm_task_t *)); 2374a6d42e7dSPeter Dunlap mutex_destroy(&idm.idm_global_mutex); 2375a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_wd_cv); 2376a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_tgt_svc_cv); 2377a6d42e7dSPeter Dunlap rw_destroy(&idm.idm_taskid_table_lock); 2378a6d42e7dSPeter Dunlap 2379a6d42e7dSPeter Dunlap return (0); 2380a6d42e7dSPeter Dunlap } 2381