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 /* 2230e7468fSPeter 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); 6930e7468fSPeter Dunlap static idm_pdu_t *idm_pdu_alloc_common(uint_t hdrlen, uint_t datalen, 7030e7468fSPeter Dunlap int sleepflag); 71a6d42e7dSPeter Dunlap 72a6d42e7dSPeter Dunlap boolean_t idm_conn_logging = 0; 73a6d42e7dSPeter Dunlap boolean_t idm_svc_logging = 0; 7430e7468fSPeter Dunlap #ifdef DEBUG 7530e7468fSPeter Dunlap boolean_t idm_pattern_checking = 1; 7630e7468fSPeter Dunlap #else 7730e7468fSPeter Dunlap boolean_t idm_pattern_checking = 0; 7830e7468fSPeter 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 204a6d42e7dSPeter Dunlap /* 205a6d42e7dSPeter Dunlap * It is possible for an IB client to connect to 206a6d42e7dSPeter Dunlap * an ethernet-only client via an IB-eth gateway. 207a6d42e7dSPeter Dunlap * Therefore, if we are attempting to use iSER and 208a6d42e7dSPeter Dunlap * fail, retry with sockets before ultimately 209a6d42e7dSPeter Dunlap * failing the connection. 210a6d42e7dSPeter Dunlap */ 211a6d42e7dSPeter Dunlap if (it->it_type == IDM_TRANSPORT_TYPE_ISER) { 212a6d42e7dSPeter Dunlap it = &idm_transport_list[IDM_TRANSPORT_TYPE_SOCKETS]; 213a6d42e7dSPeter Dunlap goto retry; 214a6d42e7dSPeter Dunlap } 215a6d42e7dSPeter Dunlap 216a6d42e7dSPeter Dunlap return (IDM_STATUS_FAIL); 217a6d42e7dSPeter Dunlap } 218a6d42e7dSPeter Dunlap 219a6d42e7dSPeter Dunlap *new_con = ic; 220a6d42e7dSPeter Dunlap 221a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 222a6d42e7dSPeter Dunlap list_insert_tail(&idm.idm_ini_conn_list, ic); 223a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 224a6d42e7dSPeter Dunlap 225a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 226a6d42e7dSPeter Dunlap } 227a6d42e7dSPeter Dunlap 228a6d42e7dSPeter Dunlap /* 229a6d42e7dSPeter Dunlap * idm_ini_conn_destroy 230a6d42e7dSPeter Dunlap * 231a6d42e7dSPeter Dunlap * Releases any resources associated with the connection. This is the 232a6d42e7dSPeter Dunlap * complement to idm_ini_conn_create. 233a6d42e7dSPeter Dunlap * ic - idm_conn_t structure representing the relevant connection 234a6d42e7dSPeter Dunlap * 235a6d42e7dSPeter Dunlap */ 23630e7468fSPeter Dunlap void 23730e7468fSPeter Dunlap idm_ini_conn_destroy_task(void *ic_void) 23830e7468fSPeter Dunlap { 23930e7468fSPeter Dunlap idm_conn_t *ic = ic_void; 24030e7468fSPeter Dunlap 24130e7468fSPeter Dunlap ic->ic_transport_ops->it_ini_conn_destroy(ic); 24230e7468fSPeter Dunlap idm_conn_destroy_common(ic); 24330e7468fSPeter Dunlap } 24430e7468fSPeter Dunlap 245a6d42e7dSPeter Dunlap void 246a6d42e7dSPeter Dunlap idm_ini_conn_destroy(idm_conn_t *ic) 247a6d42e7dSPeter Dunlap { 24830e7468fSPeter Dunlap /* 24930e7468fSPeter Dunlap * It's reasonable for the initiator to call idm_ini_conn_destroy 25030e7468fSPeter Dunlap * from within the context of the CN_CONNECT_DESTROY notification. 25130e7468fSPeter Dunlap * That's a problem since we want to destroy the taskq for the 25230e7468fSPeter Dunlap * state machine associated with the connection. Remove the 25330e7468fSPeter Dunlap * connection from the list right away then handle the remaining 25430e7468fSPeter Dunlap * work via the idm_global_taskq. 25530e7468fSPeter Dunlap */ 256a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 257a6d42e7dSPeter Dunlap list_remove(&idm.idm_ini_conn_list, ic); 258a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 259a6d42e7dSPeter Dunlap 26030e7468fSPeter Dunlap if (taskq_dispatch(idm.idm_global_taskq, 26130e7468fSPeter Dunlap &idm_ini_conn_destroy_task, ic, TQ_SLEEP) == NULL) { 26230e7468fSPeter Dunlap cmn_err(CE_WARN, 26330e7468fSPeter Dunlap "idm_ini_conn_destroy: Couldn't dispatch task"); 26430e7468fSPeter Dunlap } 265a6d42e7dSPeter Dunlap } 266a6d42e7dSPeter Dunlap 267a6d42e7dSPeter Dunlap /* 268a6d42e7dSPeter Dunlap * idm_ini_conn_connect 269a6d42e7dSPeter Dunlap * 270a6d42e7dSPeter Dunlap * Establish connection to the remote system identified in idm_conn_t. 271a6d42e7dSPeter Dunlap * The connection parameters including the remote IP address were established 27230e7468fSPeter Dunlap * in the call to idm_ini_conn_create. The IDM state machine will 27330e7468fSPeter Dunlap * perform client notifications as necessary to prompt the initiator through 27430e7468fSPeter Dunlap * the login process. IDM also keeps a timer running so that if the login 27530e7468fSPeter Dunlap * process doesn't complete in a timely manner it will fail. 276a6d42e7dSPeter Dunlap * 277a6d42e7dSPeter Dunlap * ic - idm_conn_t structure representing the relevant connection 278a6d42e7dSPeter Dunlap * 279a6d42e7dSPeter Dunlap * Returns success if the connection was established, otherwise some kind 280a6d42e7dSPeter Dunlap * of meaningful error code. 281a6d42e7dSPeter Dunlap * 28230e7468fSPeter Dunlap * Upon return the login has either failed or is loggin in (ffp) 283a6d42e7dSPeter Dunlap */ 284a6d42e7dSPeter Dunlap idm_status_t 285a6d42e7dSPeter Dunlap idm_ini_conn_connect(idm_conn_t *ic) 286a6d42e7dSPeter Dunlap { 28730e7468fSPeter Dunlap idm_status_t rc = IDM_STATUS_SUCCESS; 288a6d42e7dSPeter Dunlap 289a6d42e7dSPeter Dunlap rc = idm_conn_sm_init(ic); 290a6d42e7dSPeter Dunlap if (rc != IDM_STATUS_SUCCESS) { 291a6d42e7dSPeter Dunlap return (ic->ic_conn_sm_status); 292a6d42e7dSPeter Dunlap } 29330e7468fSPeter Dunlap 29430e7468fSPeter Dunlap /* Hold connection until we return */ 29530e7468fSPeter Dunlap idm_conn_hold(ic); 29630e7468fSPeter Dunlap 297a6d42e7dSPeter Dunlap /* Kick state machine */ 298a6d42e7dSPeter Dunlap idm_conn_event(ic, CE_CONNECT_REQ, NULL); 299a6d42e7dSPeter Dunlap 300a6d42e7dSPeter Dunlap /* Wait for login flag */ 301a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 302a6d42e7dSPeter Dunlap while (!(ic->ic_state_flags & CF_LOGIN_READY) && 303a6d42e7dSPeter Dunlap !(ic->ic_state_flags & CF_ERROR)) { 304a6d42e7dSPeter Dunlap cv_wait(&ic->ic_state_cv, &ic->ic_state_mutex); 305a6d42e7dSPeter Dunlap } 306a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 307a6d42e7dSPeter Dunlap 308a6d42e7dSPeter Dunlap if (ic->ic_state_flags & CF_ERROR) { 309a6d42e7dSPeter Dunlap /* ic->ic_conn_sm_status will contains failure status */ 31030e7468fSPeter Dunlap idm_conn_rele(ic); 311a6d42e7dSPeter Dunlap return (ic->ic_conn_sm_status); 312a6d42e7dSPeter Dunlap } 313a6d42e7dSPeter Dunlap 314a6d42e7dSPeter Dunlap /* Ready to login */ 315a6d42e7dSPeter Dunlap ASSERT(ic->ic_state_flags & CF_LOGIN_READY); 316a6d42e7dSPeter Dunlap (void) idm_notify_client(ic, CN_READY_FOR_LOGIN, NULL); 317a6d42e7dSPeter Dunlap 31830e7468fSPeter Dunlap idm_conn_rele(ic); 31930e7468fSPeter Dunlap 32030e7468fSPeter Dunlap return (rc); 321a6d42e7dSPeter Dunlap } 322a6d42e7dSPeter Dunlap 323a6d42e7dSPeter Dunlap /* 32430e7468fSPeter Dunlap * idm_ini_conn_disconnect 325a6d42e7dSPeter Dunlap * 32630e7468fSPeter Dunlap * Forces a connection (previously established using idm_ini_conn_connect) 32730e7468fSPeter Dunlap * to perform a controlled shutdown, cleaning up any outstanding requests. 32830e7468fSPeter Dunlap * 32930e7468fSPeter Dunlap * ic - idm_conn_t structure representing the relevant connection 33030e7468fSPeter Dunlap * 33130e7468fSPeter Dunlap * This is asynchronous and will return before the connection is properly 33230e7468fSPeter Dunlap * shutdown 333a6d42e7dSPeter Dunlap */ 33430e7468fSPeter Dunlap /* ARGSUSED */ 33530e7468fSPeter Dunlap void 33630e7468fSPeter Dunlap idm_ini_conn_disconnect(idm_conn_t *ic) 337a6d42e7dSPeter Dunlap { 33830e7468fSPeter Dunlap idm_conn_event(ic, CE_TRANSPORT_FAIL, NULL); 339a6d42e7dSPeter Dunlap } 340a6d42e7dSPeter Dunlap 341a6d42e7dSPeter Dunlap /* 34230e7468fSPeter Dunlap * idm_ini_conn_disconnect_wait 343a6d42e7dSPeter Dunlap * 344a6d42e7dSPeter Dunlap * Forces a connection (previously established using idm_ini_conn_connect) 34530e7468fSPeter Dunlap * to perform a controlled shutdown. Blocks until the connection is 34630e7468fSPeter Dunlap * disconnected. 347a6d42e7dSPeter Dunlap * 348a6d42e7dSPeter Dunlap * ic - idm_conn_t structure representing the relevant connection 349a6d42e7dSPeter Dunlap */ 350a6d42e7dSPeter Dunlap /* ARGSUSED */ 351a6d42e7dSPeter Dunlap void 35230e7468fSPeter Dunlap idm_ini_conn_disconnect_sync(idm_conn_t *ic) 353a6d42e7dSPeter Dunlap { 354a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 35530e7468fSPeter Dunlap if ((ic->ic_state != CS_S9_INIT_ERROR) && 35630e7468fSPeter Dunlap (ic->ic_state != CS_S11_COMPLETE)) { 35730e7468fSPeter Dunlap idm_conn_event_locked(ic, CE_TRANSPORT_FAIL, NULL, CT_NONE); 35830e7468fSPeter Dunlap while ((ic->ic_state != CS_S9_INIT_ERROR) && 35930e7468fSPeter Dunlap (ic->ic_state != CS_S11_COMPLETE)) 36030e7468fSPeter Dunlap cv_wait(&ic->ic_state_cv, &ic->ic_state_mutex); 361a6d42e7dSPeter Dunlap } 362a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 363a6d42e7dSPeter Dunlap } 364a6d42e7dSPeter Dunlap 365a6d42e7dSPeter Dunlap /* 366a6d42e7dSPeter Dunlap * idm_tgt_svc_create 367a6d42e7dSPeter Dunlap * 368a6d42e7dSPeter Dunlap * The target calls this service to obtain a service context for each available 369a6d42e7dSPeter Dunlap * transport, starting a service of each type related to the IP address and port 370a6d42e7dSPeter Dunlap * passed. The idm_svc_req_t contains the service parameters. 371a6d42e7dSPeter Dunlap */ 372a6d42e7dSPeter Dunlap idm_status_t 373a6d42e7dSPeter Dunlap idm_tgt_svc_create(idm_svc_req_t *sr, idm_svc_t **new_svc) 374a6d42e7dSPeter Dunlap { 375a6d42e7dSPeter Dunlap idm_transport_type_t type; 376a6d42e7dSPeter Dunlap idm_transport_t *it; 377a6d42e7dSPeter Dunlap idm_svc_t *is; 378a6d42e7dSPeter Dunlap int rc; 379a6d42e7dSPeter Dunlap 380a6d42e7dSPeter Dunlap *new_svc = NULL; 381a6d42e7dSPeter Dunlap is = kmem_zalloc(sizeof (idm_svc_t), KM_SLEEP); 382a6d42e7dSPeter Dunlap 383a6d42e7dSPeter Dunlap /* Initialize transport-agnostic components of the service handle */ 384a6d42e7dSPeter Dunlap is->is_svc_req = *sr; 385a6d42e7dSPeter Dunlap mutex_init(&is->is_mutex, NULL, MUTEX_DEFAULT, NULL); 386a6d42e7dSPeter Dunlap cv_init(&is->is_cv, NULL, CV_DEFAULT, NULL); 387a6d42e7dSPeter Dunlap mutex_init(&is->is_count_mutex, NULL, MUTEX_DEFAULT, NULL); 388a6d42e7dSPeter Dunlap cv_init(&is->is_count_cv, NULL, CV_DEFAULT, NULL); 389a6d42e7dSPeter Dunlap idm_refcnt_init(&is->is_refcnt, is); 390a6d42e7dSPeter Dunlap 391a6d42e7dSPeter Dunlap /* 392a6d42e7dSPeter Dunlap * Make sure all available transports are setup. We call this now 393a6d42e7dSPeter Dunlap * instead of at initialization time in case IB has become available 394a6d42e7dSPeter Dunlap * since we started (hotplug, etc). 395a6d42e7dSPeter Dunlap */ 396a6d42e7dSPeter Dunlap idm_transport_setup(sr->sr_li); 397a6d42e7dSPeter Dunlap 398a6d42e7dSPeter Dunlap /* 399a6d42e7dSPeter Dunlap * Loop through the transports, configuring the transport-specific 400a6d42e7dSPeter Dunlap * components of each one. 401a6d42e7dSPeter Dunlap */ 402a6d42e7dSPeter Dunlap for (type = 0; type < IDM_TRANSPORT_NUM_TYPES; type++) { 403a6d42e7dSPeter Dunlap 404a6d42e7dSPeter Dunlap it = &idm_transport_list[type]; 405a6d42e7dSPeter Dunlap /* 406a6d42e7dSPeter Dunlap * If it_ops is NULL then the transport is unconfigured 407a6d42e7dSPeter Dunlap * and we shouldn't try to start the service. 408a6d42e7dSPeter Dunlap */ 409a6d42e7dSPeter Dunlap if (it->it_ops == NULL) { 410a6d42e7dSPeter Dunlap continue; 411a6d42e7dSPeter Dunlap } 412a6d42e7dSPeter Dunlap 413a6d42e7dSPeter Dunlap rc = it->it_ops->it_tgt_svc_create(sr, is); 414a6d42e7dSPeter Dunlap if (rc != IDM_STATUS_SUCCESS) { 415a6d42e7dSPeter Dunlap /* Teardown any configured services */ 416a6d42e7dSPeter Dunlap while (type--) { 417a6d42e7dSPeter Dunlap it = &idm_transport_list[type]; 418a6d42e7dSPeter Dunlap if (it->it_ops == NULL) { 419a6d42e7dSPeter Dunlap continue; 420a6d42e7dSPeter Dunlap } 421a6d42e7dSPeter Dunlap it->it_ops->it_tgt_svc_destroy(is); 422a6d42e7dSPeter Dunlap } 423a6d42e7dSPeter Dunlap /* Free the svc context and return */ 424a6d42e7dSPeter Dunlap kmem_free(is, sizeof (idm_svc_t)); 425a6d42e7dSPeter Dunlap return (rc); 426a6d42e7dSPeter Dunlap } 427a6d42e7dSPeter Dunlap } 428a6d42e7dSPeter Dunlap 429a6d42e7dSPeter Dunlap *new_svc = is; 430a6d42e7dSPeter Dunlap 431a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 432a6d42e7dSPeter Dunlap list_insert_tail(&idm.idm_tgt_svc_list, is); 433a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 434a6d42e7dSPeter Dunlap 435a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 436a6d42e7dSPeter Dunlap } 437a6d42e7dSPeter Dunlap 438a6d42e7dSPeter Dunlap /* 439a6d42e7dSPeter Dunlap * idm_tgt_svc_destroy 440a6d42e7dSPeter Dunlap * 441a6d42e7dSPeter Dunlap * is - idm_svc_t returned by the call to idm_tgt_svc_create 442a6d42e7dSPeter Dunlap * 443a6d42e7dSPeter Dunlap * Cleanup any resources associated with the idm_svc_t. 444a6d42e7dSPeter Dunlap */ 445a6d42e7dSPeter Dunlap void 446a6d42e7dSPeter Dunlap idm_tgt_svc_destroy(idm_svc_t *is) 447a6d42e7dSPeter Dunlap { 448a6d42e7dSPeter Dunlap idm_transport_type_t type; 449a6d42e7dSPeter Dunlap idm_transport_t *it; 450a6d42e7dSPeter Dunlap 451a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 452a6d42e7dSPeter Dunlap /* remove this service from the global list */ 453a6d42e7dSPeter Dunlap list_remove(&idm.idm_tgt_svc_list, is); 454a6d42e7dSPeter Dunlap /* wakeup any waiters for service change */ 455a6d42e7dSPeter Dunlap cv_broadcast(&idm.idm_tgt_svc_cv); 456a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 457a6d42e7dSPeter Dunlap 458a6d42e7dSPeter Dunlap /* teardown each transport-specific service */ 459a6d42e7dSPeter Dunlap for (type = 0; type < IDM_TRANSPORT_NUM_TYPES; type++) { 460a6d42e7dSPeter Dunlap it = &idm_transport_list[type]; 461a6d42e7dSPeter Dunlap if (it->it_ops == NULL) { 462a6d42e7dSPeter Dunlap continue; 463a6d42e7dSPeter Dunlap } 464a6d42e7dSPeter Dunlap 465a6d42e7dSPeter Dunlap it->it_ops->it_tgt_svc_destroy(is); 466a6d42e7dSPeter Dunlap } 467a6d42e7dSPeter Dunlap 46830e7468fSPeter Dunlap /* tear down the svc resources */ 46930e7468fSPeter Dunlap idm_refcnt_destroy(&is->is_refcnt); 47030e7468fSPeter Dunlap cv_destroy(&is->is_count_cv); 47130e7468fSPeter Dunlap mutex_destroy(&is->is_count_mutex); 47230e7468fSPeter Dunlap cv_destroy(&is->is_cv); 47330e7468fSPeter Dunlap mutex_destroy(&is->is_mutex); 47430e7468fSPeter Dunlap 475a6d42e7dSPeter Dunlap /* free the svc handle */ 476a6d42e7dSPeter Dunlap kmem_free(is, sizeof (idm_svc_t)); 477a6d42e7dSPeter Dunlap } 478a6d42e7dSPeter Dunlap 479a6d42e7dSPeter Dunlap void 480a6d42e7dSPeter Dunlap idm_tgt_svc_hold(idm_svc_t *is) 481a6d42e7dSPeter Dunlap { 482a6d42e7dSPeter Dunlap idm_refcnt_hold(&is->is_refcnt); 483a6d42e7dSPeter Dunlap } 484a6d42e7dSPeter Dunlap 485a6d42e7dSPeter Dunlap void 486a6d42e7dSPeter Dunlap idm_tgt_svc_rele_and_destroy(idm_svc_t *is) 487a6d42e7dSPeter Dunlap { 488a6d42e7dSPeter Dunlap idm_refcnt_rele_and_destroy(&is->is_refcnt, 489a6d42e7dSPeter Dunlap (idm_refcnt_cb_t *)&idm_tgt_svc_destroy); 490a6d42e7dSPeter Dunlap } 491a6d42e7dSPeter Dunlap 492a6d42e7dSPeter Dunlap /* 493a6d42e7dSPeter Dunlap * idm_tgt_svc_online 494a6d42e7dSPeter Dunlap * 495a6d42e7dSPeter Dunlap * is - idm_svc_t returned by the call to idm_tgt_svc_create 496a6d42e7dSPeter Dunlap * 497a6d42e7dSPeter Dunlap * Online each transport service, as we want this target to be accessible 498a6d42e7dSPeter Dunlap * via any configured transport. 499a6d42e7dSPeter Dunlap * 500a6d42e7dSPeter Dunlap * When the initiator establishes a new connection to the target, IDM will 501a6d42e7dSPeter Dunlap * call the "new connect" callback defined in the idm_svc_req_t structure 502a6d42e7dSPeter Dunlap * and it will pass an idm_conn_t structure representing that new connection. 503a6d42e7dSPeter Dunlap */ 504a6d42e7dSPeter Dunlap idm_status_t 505a6d42e7dSPeter Dunlap idm_tgt_svc_online(idm_svc_t *is) 506a6d42e7dSPeter Dunlap { 507a6d42e7dSPeter Dunlap 50830e7468fSPeter Dunlap idm_transport_type_t type, last_type; 509a6d42e7dSPeter Dunlap idm_transport_t *it; 51030e7468fSPeter Dunlap int rc = IDM_STATUS_SUCCESS; 511a6d42e7dSPeter Dunlap 512a6d42e7dSPeter Dunlap mutex_enter(&is->is_mutex); 513a6d42e7dSPeter Dunlap if (is->is_online == 0) { 51430e7468fSPeter Dunlap /* Walk through each of the transports and online them */ 515a6d42e7dSPeter Dunlap for (type = 0; type < IDM_TRANSPORT_NUM_TYPES; type++) { 516a6d42e7dSPeter Dunlap it = &idm_transport_list[type]; 517a6d42e7dSPeter Dunlap if (it->it_ops == NULL) { 518a6d42e7dSPeter Dunlap /* transport is not registered */ 519a6d42e7dSPeter Dunlap continue; 520a6d42e7dSPeter Dunlap } 521a6d42e7dSPeter Dunlap 522a6d42e7dSPeter Dunlap mutex_exit(&is->is_mutex); 523a6d42e7dSPeter Dunlap rc = it->it_ops->it_tgt_svc_online(is); 524a6d42e7dSPeter Dunlap mutex_enter(&is->is_mutex); 52530e7468fSPeter Dunlap if (rc != IDM_STATUS_SUCCESS) { 52630e7468fSPeter Dunlap last_type = type; 52730e7468fSPeter Dunlap break; 52830e7468fSPeter Dunlap } 52930e7468fSPeter Dunlap } 53030e7468fSPeter Dunlap if (rc != IDM_STATUS_SUCCESS) { 53130e7468fSPeter Dunlap /* 53230e7468fSPeter Dunlap * The last transport failed to online. 53330e7468fSPeter Dunlap * Offline any transport onlined above and 53430e7468fSPeter Dunlap * do not online the target. 53530e7468fSPeter Dunlap */ 53630e7468fSPeter Dunlap for (type = 0; type < last_type; type++) { 53730e7468fSPeter Dunlap it = &idm_transport_list[type]; 53830e7468fSPeter Dunlap if (it->it_ops == NULL) { 53930e7468fSPeter Dunlap /* transport is not registered */ 54030e7468fSPeter Dunlap continue; 54130e7468fSPeter Dunlap } 54230e7468fSPeter Dunlap 54330e7468fSPeter Dunlap mutex_exit(&is->is_mutex); 54430e7468fSPeter Dunlap it->it_ops->it_tgt_svc_offline(is); 54530e7468fSPeter Dunlap mutex_enter(&is->is_mutex); 546a6d42e7dSPeter Dunlap } 54730e7468fSPeter Dunlap } else { 54830e7468fSPeter Dunlap /* Target service now online */ 54930e7468fSPeter Dunlap is->is_online = 1; 550a6d42e7dSPeter Dunlap } 551a6d42e7dSPeter Dunlap } else { 55230e7468fSPeter Dunlap /* Target service already online, just bump the count */ 553a6d42e7dSPeter Dunlap is->is_online++; 55430e7468fSPeter Dunlap } 555a6d42e7dSPeter Dunlap mutex_exit(&is->is_mutex); 556a6d42e7dSPeter Dunlap 55730e7468fSPeter Dunlap return (rc); 558a6d42e7dSPeter Dunlap } 559a6d42e7dSPeter Dunlap 560a6d42e7dSPeter Dunlap /* 561a6d42e7dSPeter Dunlap * idm_tgt_svc_offline 562a6d42e7dSPeter Dunlap * 563a6d42e7dSPeter Dunlap * is - idm_svc_t returned by the call to idm_tgt_svc_create 564a6d42e7dSPeter Dunlap * 565a6d42e7dSPeter Dunlap * Shutdown any online target services. 566a6d42e7dSPeter Dunlap */ 567a6d42e7dSPeter Dunlap void 568a6d42e7dSPeter Dunlap idm_tgt_svc_offline(idm_svc_t *is) 569a6d42e7dSPeter Dunlap { 570a6d42e7dSPeter Dunlap idm_transport_type_t type; 571a6d42e7dSPeter Dunlap idm_transport_t *it; 572a6d42e7dSPeter Dunlap 573a6d42e7dSPeter Dunlap mutex_enter(&is->is_mutex); 574a6d42e7dSPeter Dunlap is->is_online--; 575a6d42e7dSPeter Dunlap if (is->is_online == 0) { 576a6d42e7dSPeter Dunlap /* Walk through each of the transports and offline them */ 577a6d42e7dSPeter Dunlap for (type = 0; type < IDM_TRANSPORT_NUM_TYPES; type++) { 578a6d42e7dSPeter Dunlap it = &idm_transport_list[type]; 579a6d42e7dSPeter Dunlap if (it->it_ops == NULL) { 580a6d42e7dSPeter Dunlap /* transport is not registered */ 581a6d42e7dSPeter Dunlap continue; 582a6d42e7dSPeter Dunlap } 583a6d42e7dSPeter Dunlap 584a6d42e7dSPeter Dunlap mutex_exit(&is->is_mutex); 585a6d42e7dSPeter Dunlap it->it_ops->it_tgt_svc_offline(is); 586a6d42e7dSPeter Dunlap mutex_enter(&is->is_mutex); 587a6d42e7dSPeter Dunlap } 588a6d42e7dSPeter Dunlap } 589a6d42e7dSPeter Dunlap mutex_exit(&is->is_mutex); 590a6d42e7dSPeter Dunlap } 591a6d42e7dSPeter Dunlap 592a6d42e7dSPeter Dunlap /* 593a6d42e7dSPeter Dunlap * idm_tgt_svc_lookup 594a6d42e7dSPeter Dunlap * 595a6d42e7dSPeter Dunlap * Lookup a service instance listening on the specified port 596a6d42e7dSPeter Dunlap */ 597a6d42e7dSPeter Dunlap 598a6d42e7dSPeter Dunlap idm_svc_t * 599a6d42e7dSPeter Dunlap idm_tgt_svc_lookup(uint16_t port) 600a6d42e7dSPeter Dunlap { 601a6d42e7dSPeter Dunlap idm_svc_t *result; 602a6d42e7dSPeter Dunlap 603a6d42e7dSPeter Dunlap retry: 604a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 605a6d42e7dSPeter Dunlap for (result = list_head(&idm.idm_tgt_svc_list); 606a6d42e7dSPeter Dunlap result != NULL; 607a6d42e7dSPeter Dunlap result = list_next(&idm.idm_tgt_svc_list, result)) { 608a6d42e7dSPeter Dunlap if (result->is_svc_req.sr_port == port) { 609a6d42e7dSPeter Dunlap if (result->is_online == 0) { 610a6d42e7dSPeter Dunlap /* 611a6d42e7dSPeter Dunlap * A service exists on this port, but it 612a6d42e7dSPeter Dunlap * is going away, wait for it to cleanup. 613a6d42e7dSPeter Dunlap */ 614a6d42e7dSPeter Dunlap cv_wait(&idm.idm_tgt_svc_cv, 615a6d42e7dSPeter Dunlap &idm.idm_global_mutex); 616a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 617a6d42e7dSPeter Dunlap goto retry; 618a6d42e7dSPeter Dunlap } 619a6d42e7dSPeter Dunlap idm_tgt_svc_hold(result); 620a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 621a6d42e7dSPeter Dunlap return (result); 622a6d42e7dSPeter Dunlap } 623a6d42e7dSPeter Dunlap } 624a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 625a6d42e7dSPeter Dunlap 626a6d42e7dSPeter Dunlap return (NULL); 627a6d42e7dSPeter Dunlap } 628a6d42e7dSPeter Dunlap 629a6d42e7dSPeter Dunlap /* 630a6d42e7dSPeter Dunlap * idm_negotiate_key_values() 631a6d42e7dSPeter Dunlap * Give IDM level a chance to negotiate any login parameters it should own. 632a6d42e7dSPeter Dunlap * -- leave unhandled parameters alone on request_nvl 633a6d42e7dSPeter Dunlap * -- move all handled parameters to response_nvl with an appropriate response 634a6d42e7dSPeter Dunlap * -- also add an entry to negotiated_nvl for any accepted parameters 635a6d42e7dSPeter Dunlap */ 636a6d42e7dSPeter Dunlap kv_status_t 637a6d42e7dSPeter Dunlap idm_negotiate_key_values(idm_conn_t *ic, nvlist_t *request_nvl, 638a6d42e7dSPeter Dunlap nvlist_t *response_nvl, nvlist_t *negotiated_nvl) 639a6d42e7dSPeter Dunlap { 640a6d42e7dSPeter Dunlap ASSERT(ic->ic_transport_ops != NULL); 641a6d42e7dSPeter Dunlap return (ic->ic_transport_ops->it_negotiate_key_values(ic, 642a6d42e7dSPeter Dunlap request_nvl, response_nvl, negotiated_nvl)); 643a6d42e7dSPeter Dunlap } 644a6d42e7dSPeter Dunlap 645a6d42e7dSPeter Dunlap /* 646a6d42e7dSPeter Dunlap * idm_notice_key_values() 647a6d42e7dSPeter Dunlap * Activate at the IDM level any parameters that have been negotiated. 648a6d42e7dSPeter Dunlap * Passes the set of key value pairs to the transport for activation. 649a6d42e7dSPeter Dunlap * This will be invoked as the connection is entering full-feature mode. 650a6d42e7dSPeter Dunlap */ 65130e7468fSPeter Dunlap void 652a6d42e7dSPeter Dunlap idm_notice_key_values(idm_conn_t *ic, nvlist_t *negotiated_nvl) 653a6d42e7dSPeter Dunlap { 654a6d42e7dSPeter Dunlap ASSERT(ic->ic_transport_ops != NULL); 65530e7468fSPeter Dunlap ic->ic_transport_ops->it_notice_key_values(ic, negotiated_nvl); 656a6d42e7dSPeter Dunlap } 657a6d42e7dSPeter Dunlap 658a6d42e7dSPeter Dunlap /* 659a6d42e7dSPeter Dunlap * idm_buf_tx_to_ini 660a6d42e7dSPeter Dunlap * 661a6d42e7dSPeter Dunlap * This is IDM's implementation of the 'Put_Data' operational primitive. 662a6d42e7dSPeter Dunlap * 663a6d42e7dSPeter Dunlap * This function is invoked by a target iSCSI layer to request its local 664a6d42e7dSPeter Dunlap * Datamover layer to transmit the Data-In PDU to the peer iSCSI layer 665a6d42e7dSPeter Dunlap * on the remote iSCSI node. The I/O buffer represented by 'idb' is 666a6d42e7dSPeter Dunlap * transferred to the initiator associated with task 'idt'. The connection 667a6d42e7dSPeter Dunlap * info, contents of the Data-In PDU header, the DataDescriptorIn, BHS, 668a6d42e7dSPeter Dunlap * and the callback (idb->idb_buf_cb) at transfer completion are 669a6d42e7dSPeter Dunlap * provided as input. 670a6d42e7dSPeter Dunlap * 671a6d42e7dSPeter Dunlap * This data transfer takes place transparently to the remote iSCSI layer, 672a6d42e7dSPeter Dunlap * i.e. without its participation. 673a6d42e7dSPeter Dunlap * 674a6d42e7dSPeter Dunlap * Using sockets, IDM implements the data transfer by segmenting the data 675a6d42e7dSPeter Dunlap * buffer into appropriately sized iSCSI PDUs and transmitting them to the 676a6d42e7dSPeter Dunlap * initiator. iSER performs the transfer using RDMA write. 677a6d42e7dSPeter Dunlap * 678a6d42e7dSPeter Dunlap */ 679a6d42e7dSPeter Dunlap idm_status_t 680a6d42e7dSPeter Dunlap idm_buf_tx_to_ini(idm_task_t *idt, idm_buf_t *idb, 681a6d42e7dSPeter Dunlap uint32_t offset, uint32_t xfer_len, 682a6d42e7dSPeter Dunlap idm_buf_cb_t idb_buf_cb, void *cb_arg) 683a6d42e7dSPeter Dunlap { 684a6d42e7dSPeter Dunlap idm_status_t rc; 685a6d42e7dSPeter Dunlap 686a6d42e7dSPeter Dunlap idb->idb_bufoffset = offset; 687a6d42e7dSPeter Dunlap idb->idb_xfer_len = xfer_len; 688a6d42e7dSPeter Dunlap idb->idb_buf_cb = idb_buf_cb; 689a6d42e7dSPeter Dunlap idb->idb_cb_arg = cb_arg; 69030e7468fSPeter Dunlap gethrestime(&idb->idb_xfer_start); 69130e7468fSPeter Dunlap 69230e7468fSPeter Dunlap /* 69330e7468fSPeter Dunlap * Buffer should not contain the pattern. If the pattern is 69430e7468fSPeter Dunlap * present then we've been asked to transmit initialized data 69530e7468fSPeter Dunlap */ 69630e7468fSPeter Dunlap IDM_BUFPAT_CHECK(idb, xfer_len, BP_CHECK_ASSERT); 697a6d42e7dSPeter Dunlap 698a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 699a6d42e7dSPeter Dunlap switch (idt->idt_state) { 700a6d42e7dSPeter Dunlap case TASK_ACTIVE: 701a6d42e7dSPeter Dunlap idt->idt_tx_to_ini_start++; 702a6d42e7dSPeter Dunlap idm_task_hold(idt); 703a6d42e7dSPeter Dunlap idm_buf_bind_in_locked(idt, idb); 704a6d42e7dSPeter Dunlap idb->idb_in_transport = B_TRUE; 705a6d42e7dSPeter Dunlap rc = (*idt->idt_ic->ic_transport_ops->it_buf_tx_to_ini) 706a6d42e7dSPeter Dunlap (idt, idb); 707a6d42e7dSPeter Dunlap return (rc); 708a6d42e7dSPeter Dunlap 709a6d42e7dSPeter Dunlap case TASK_SUSPENDING: 710a6d42e7dSPeter Dunlap case TASK_SUSPENDED: 711a6d42e7dSPeter Dunlap /* 712a6d42e7dSPeter Dunlap * Bind buffer but don't start a transfer since the task 713a6d42e7dSPeter Dunlap * is suspended 714a6d42e7dSPeter Dunlap */ 715a6d42e7dSPeter Dunlap idm_buf_bind_in_locked(idt, idb); 716a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 717a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 718a6d42e7dSPeter Dunlap 719a6d42e7dSPeter Dunlap case TASK_ABORTING: 720a6d42e7dSPeter Dunlap case TASK_ABORTED: 721a6d42e7dSPeter Dunlap /* 722a6d42e7dSPeter Dunlap * Once the task is aborted, any buffers added to the 723a6d42e7dSPeter Dunlap * idt_inbufv will never get cleaned up, so just return 724a6d42e7dSPeter Dunlap * SUCCESS. The buffer should get cleaned up by the 725a6d42e7dSPeter Dunlap * client or framework once task_aborted has completed. 726a6d42e7dSPeter Dunlap */ 727a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 728a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 729a6d42e7dSPeter Dunlap 730a6d42e7dSPeter Dunlap default: 731a6d42e7dSPeter Dunlap ASSERT(0); 732a6d42e7dSPeter Dunlap break; 733a6d42e7dSPeter Dunlap } 734a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 735a6d42e7dSPeter Dunlap 736a6d42e7dSPeter Dunlap return (IDM_STATUS_FAIL); 737a6d42e7dSPeter Dunlap } 738a6d42e7dSPeter Dunlap 739a6d42e7dSPeter Dunlap /* 740a6d42e7dSPeter Dunlap * idm_buf_rx_from_ini 741a6d42e7dSPeter Dunlap * 742a6d42e7dSPeter Dunlap * This is IDM's implementation of the 'Get_Data' operational primitive. 743a6d42e7dSPeter Dunlap * 744a6d42e7dSPeter Dunlap * This function is invoked by a target iSCSI layer to request its local 745a6d42e7dSPeter Dunlap * Datamover layer to retrieve certain data identified by the R2T PDU from the 746a6d42e7dSPeter Dunlap * peer iSCSI layer on the remote node. The retrieved Data-Out PDU will be 747a6d42e7dSPeter Dunlap * mapped to the respective buffer by the task tags (ITT & TTT). 748a6d42e7dSPeter Dunlap * The connection information, contents of an R2T PDU, DataDescriptor, BHS, and 749a6d42e7dSPeter Dunlap * the callback (idb->idb_buf_cb) notification for data transfer completion are 750a6d42e7dSPeter Dunlap * are provided as input. 751a6d42e7dSPeter Dunlap * 752a6d42e7dSPeter Dunlap * When an iSCSI node sends an R2T PDU to its local Datamover layer, the local 753a6d42e7dSPeter Dunlap * Datamover layer, the local and remote Datamover layers transparently bring 754a6d42e7dSPeter Dunlap * about the data transfer requested by the R2T PDU, without the participation 755a6d42e7dSPeter Dunlap * of the iSCSI layers. 756a6d42e7dSPeter Dunlap * 757a6d42e7dSPeter Dunlap * Using sockets, IDM transmits an R2T PDU for each buffer and the rx_data_out() 758a6d42e7dSPeter Dunlap * assembles the Data-Out PDUs into the buffer. iSER uses RDMA read. 759a6d42e7dSPeter Dunlap * 760a6d42e7dSPeter Dunlap */ 761a6d42e7dSPeter Dunlap idm_status_t 762a6d42e7dSPeter Dunlap idm_buf_rx_from_ini(idm_task_t *idt, idm_buf_t *idb, 763a6d42e7dSPeter Dunlap uint32_t offset, uint32_t xfer_len, 764a6d42e7dSPeter Dunlap idm_buf_cb_t idb_buf_cb, void *cb_arg) 765a6d42e7dSPeter Dunlap { 766a6d42e7dSPeter Dunlap idm_status_t rc; 767a6d42e7dSPeter Dunlap 768a6d42e7dSPeter Dunlap idb->idb_bufoffset = offset; 769a6d42e7dSPeter Dunlap idb->idb_xfer_len = xfer_len; 770a6d42e7dSPeter Dunlap idb->idb_buf_cb = idb_buf_cb; 771a6d42e7dSPeter Dunlap idb->idb_cb_arg = cb_arg; 77230e7468fSPeter Dunlap gethrestime(&idb->idb_xfer_start); 773a6d42e7dSPeter Dunlap 774a6d42e7dSPeter Dunlap /* 775a6d42e7dSPeter Dunlap * "In" buf list is for "Data In" PDU's, "Out" buf list is for 776a6d42e7dSPeter Dunlap * "Data Out" PDU's 777a6d42e7dSPeter Dunlap */ 778a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 779a6d42e7dSPeter Dunlap switch (idt->idt_state) { 780a6d42e7dSPeter Dunlap case TASK_ACTIVE: 781a6d42e7dSPeter Dunlap idt->idt_rx_from_ini_start++; 782a6d42e7dSPeter Dunlap idm_task_hold(idt); 783a6d42e7dSPeter Dunlap idm_buf_bind_out_locked(idt, idb); 784a6d42e7dSPeter Dunlap idb->idb_in_transport = B_TRUE; 785a6d42e7dSPeter Dunlap rc = (*idt->idt_ic->ic_transport_ops->it_buf_rx_from_ini) 786a6d42e7dSPeter Dunlap (idt, idb); 787a6d42e7dSPeter Dunlap return (rc); 788a6d42e7dSPeter Dunlap case TASK_SUSPENDING: 789a6d42e7dSPeter Dunlap case TASK_SUSPENDED: 790a6d42e7dSPeter Dunlap case TASK_ABORTING: 791a6d42e7dSPeter Dunlap case TASK_ABORTED: 792a6d42e7dSPeter Dunlap /* 793a6d42e7dSPeter Dunlap * Bind buffer but don't start a transfer since the task 794a6d42e7dSPeter Dunlap * is suspended 795a6d42e7dSPeter Dunlap */ 796a6d42e7dSPeter Dunlap idm_buf_bind_out_locked(idt, idb); 797a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 798a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 799a6d42e7dSPeter Dunlap default: 800a6d42e7dSPeter Dunlap ASSERT(0); 801a6d42e7dSPeter Dunlap break; 802a6d42e7dSPeter Dunlap } 803a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 804a6d42e7dSPeter Dunlap 805a6d42e7dSPeter Dunlap return (IDM_STATUS_FAIL); 806a6d42e7dSPeter Dunlap } 807a6d42e7dSPeter Dunlap 808a6d42e7dSPeter Dunlap /* 809a6d42e7dSPeter Dunlap * idm_buf_tx_to_ini_done 810a6d42e7dSPeter Dunlap * 811a6d42e7dSPeter Dunlap * The transport calls this after it has completed a transfer requested by 812a6d42e7dSPeter Dunlap * a call to transport_buf_tx_to_ini 813a6d42e7dSPeter Dunlap * 814a6d42e7dSPeter Dunlap * Caller holds idt->idt_mutex, idt->idt_mutex is released before returning. 815a6d42e7dSPeter Dunlap * idt may be freed after the call to idb->idb_buf_cb. 816a6d42e7dSPeter Dunlap */ 817a6d42e7dSPeter Dunlap void 818a6d42e7dSPeter Dunlap idm_buf_tx_to_ini_done(idm_task_t *idt, idm_buf_t *idb, idm_status_t status) 819a6d42e7dSPeter Dunlap { 820a6d42e7dSPeter Dunlap ASSERT(mutex_owned(&idt->idt_mutex)); 821a6d42e7dSPeter Dunlap idb->idb_in_transport = B_FALSE; 822a6d42e7dSPeter Dunlap idb->idb_tx_thread = B_FALSE; 823a6d42e7dSPeter Dunlap idt->idt_tx_to_ini_done++; 82430e7468fSPeter Dunlap gethrestime(&idb->idb_xfer_done); 825a6d42e7dSPeter Dunlap 826a6d42e7dSPeter Dunlap /* 827a6d42e7dSPeter Dunlap * idm_refcnt_rele may cause TASK_SUSPENDING --> TASK_SUSPENDED or 828a6d42e7dSPeter Dunlap * TASK_ABORTING --> TASK_ABORTED transistion if the refcount goes 829a6d42e7dSPeter Dunlap * to 0. 830a6d42e7dSPeter Dunlap */ 831a6d42e7dSPeter Dunlap idm_task_rele(idt); 832a6d42e7dSPeter Dunlap idb->idb_status = status; 833a6d42e7dSPeter Dunlap 834a6d42e7dSPeter Dunlap switch (idt->idt_state) { 835a6d42e7dSPeter Dunlap case TASK_ACTIVE: 83672cf3143Speter dunlap idt->idt_ic->ic_timestamp = ddi_get_lbolt(); 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++; 88730e7468fSPeter 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 89730e7468fSPeter Dunlap if (status == IDM_STATUS_SUCCESS) { 89830e7468fSPeter Dunlap /* 89930e7468fSPeter Dunlap * Buffer should not contain the pattern. If it does then 90030e7468fSPeter Dunlap * we did not get the data from the remote host. 90130e7468fSPeter Dunlap */ 90230e7468fSPeter Dunlap IDM_BUFPAT_CHECK(idb, idb->idb_xfer_len, BP_CHECK_ASSERT); 90330e7468fSPeter Dunlap } 90430e7468fSPeter Dunlap 905a6d42e7dSPeter Dunlap switch (idt->idt_state) { 906a6d42e7dSPeter Dunlap case TASK_ACTIVE: 90772cf3143Speter dunlap idt->idt_ic->ic_timestamp = ddi_get_lbolt(); 908a6d42e7dSPeter Dunlap idm_buf_unbind_out_locked(idt, idb); 909a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 910a6d42e7dSPeter Dunlap (*idb->idb_buf_cb)(idb, status); 911a6d42e7dSPeter Dunlap return; 912a6d42e7dSPeter Dunlap case TASK_SUSPENDING: 913a6d42e7dSPeter Dunlap case TASK_SUSPENDED: 914a6d42e7dSPeter Dunlap case TASK_ABORTING: 915a6d42e7dSPeter Dunlap case TASK_ABORTED: 916a6d42e7dSPeter Dunlap /* 917a6d42e7dSPeter Dunlap * To keep things simple we will ignore the case where the 918a6d42e7dSPeter Dunlap * transfer was successful and leave all buffers bound to the 919a6d42e7dSPeter Dunlap * task. This allows us to also ignore the case where we've 920a6d42e7dSPeter Dunlap * been asked to abort a task but the last transfer of the 921a6d42e7dSPeter Dunlap * task has completed. IDM has no idea whether this was, in 922a6d42e7dSPeter Dunlap * fact, the last transfer of the task so it would be difficult 923a6d42e7dSPeter Dunlap * to handle this case. Everything should get sorted out again 924a6d42e7dSPeter Dunlap * after task reassignment is complete. 925a6d42e7dSPeter Dunlap * 926a6d42e7dSPeter Dunlap * In the case of TASK_ABORTING we could conceivably call the 927a6d42e7dSPeter Dunlap * buffer callback here but the timing of when the client's 928a6d42e7dSPeter Dunlap * client_task_aborted callback is invoked vs. when the client's 929a6d42e7dSPeter Dunlap * buffer callback gets invoked gets sticky. We don't want 930a6d42e7dSPeter Dunlap * the client to here from us again after the call to 931a6d42e7dSPeter Dunlap * client_task_aborted() but we don't want to give it a bunch 932a6d42e7dSPeter Dunlap * of failed buffer transfers until we've called 933a6d42e7dSPeter Dunlap * client_task_aborted(). Instead we'll just leave all the 934a6d42e7dSPeter Dunlap * buffers bound and allow the client to cleanup. 935a6d42e7dSPeter Dunlap */ 936a6d42e7dSPeter Dunlap break; 937a6d42e7dSPeter Dunlap default: 938a6d42e7dSPeter Dunlap ASSERT(0); 939a6d42e7dSPeter Dunlap } 940a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 941a6d42e7dSPeter Dunlap } 942a6d42e7dSPeter Dunlap 943a6d42e7dSPeter Dunlap /* 944a6d42e7dSPeter Dunlap * idm_buf_alloc 945a6d42e7dSPeter Dunlap * 946a6d42e7dSPeter Dunlap * Allocates a buffer handle and registers it for use with the transport 947a6d42e7dSPeter Dunlap * layer. If a buffer is not passed on bufptr, the buffer will be allocated 948a6d42e7dSPeter Dunlap * as well as the handle. 949a6d42e7dSPeter Dunlap * 950a6d42e7dSPeter Dunlap * ic - connection on which the buffer will be transferred 951a6d42e7dSPeter Dunlap * bufptr - allocate memory for buffer if NULL, else assign to buffer 952a6d42e7dSPeter Dunlap * buflen - length of buffer 953a6d42e7dSPeter Dunlap * 954a6d42e7dSPeter Dunlap * Returns idm_buf_t handle if successful, otherwise NULL 955a6d42e7dSPeter Dunlap */ 956a6d42e7dSPeter Dunlap idm_buf_t * 957a6d42e7dSPeter Dunlap idm_buf_alloc(idm_conn_t *ic, void *bufptr, uint64_t buflen) 958a6d42e7dSPeter Dunlap { 959a6d42e7dSPeter Dunlap idm_buf_t *buf = NULL; 960a6d42e7dSPeter Dunlap int rc; 961a6d42e7dSPeter Dunlap 962a6d42e7dSPeter Dunlap ASSERT(ic != NULL); 963a6d42e7dSPeter Dunlap ASSERT(idm.idm_buf_cache != NULL); 964a6d42e7dSPeter Dunlap ASSERT(buflen > 0); 965a6d42e7dSPeter Dunlap 966a6d42e7dSPeter Dunlap /* Don't allocate new buffers if we are not in FFP */ 967a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 968a6d42e7dSPeter Dunlap if (!ic->ic_ffp) { 969a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 970a6d42e7dSPeter Dunlap return (NULL); 971a6d42e7dSPeter Dunlap } 972a6d42e7dSPeter Dunlap 973a6d42e7dSPeter Dunlap 974a6d42e7dSPeter Dunlap idm_conn_hold(ic); 975a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 976a6d42e7dSPeter Dunlap 977a6d42e7dSPeter Dunlap buf = kmem_cache_alloc(idm.idm_buf_cache, KM_NOSLEEP); 978a6d42e7dSPeter Dunlap if (buf == NULL) { 979a6d42e7dSPeter Dunlap idm_conn_rele(ic); 980a6d42e7dSPeter Dunlap return (NULL); 981a6d42e7dSPeter Dunlap } 982a6d42e7dSPeter Dunlap 983a6d42e7dSPeter Dunlap buf->idb_ic = ic; 984a6d42e7dSPeter Dunlap buf->idb_buflen = buflen; 985a6d42e7dSPeter Dunlap buf->idb_exp_offset = 0; 986a6d42e7dSPeter Dunlap buf->idb_bufoffset = 0; 987a6d42e7dSPeter Dunlap buf->idb_xfer_len = 0; 988a6d42e7dSPeter Dunlap buf->idb_magic = IDM_BUF_MAGIC; 98930e7468fSPeter Dunlap buf->idb_in_transport = B_FALSE; 99030e7468fSPeter Dunlap buf->idb_bufbcopy = B_FALSE; 991a6d42e7dSPeter Dunlap 992a6d42e7dSPeter Dunlap /* 993a6d42e7dSPeter Dunlap * If bufptr is NULL, we have an implicit request to allocate 994a6d42e7dSPeter Dunlap * memory for this IDM buffer handle and register it for use 995a6d42e7dSPeter Dunlap * with the transport. To simplify this, and to give more freedom 996a6d42e7dSPeter Dunlap * to the transport layer for it's own buffer management, both of 997a6d42e7dSPeter Dunlap * these actions will take place in the transport layer. 998a6d42e7dSPeter Dunlap * If bufptr is set, then the caller has allocated memory (or more 999a6d42e7dSPeter Dunlap * likely it's been passed from an upper layer), and we need only 1000a6d42e7dSPeter Dunlap * register the buffer for use with the transport layer. 1001a6d42e7dSPeter Dunlap */ 1002a6d42e7dSPeter Dunlap if (bufptr == NULL) { 1003a6d42e7dSPeter Dunlap /* 1004a6d42e7dSPeter Dunlap * Allocate a buffer from the transport layer (which 1005a6d42e7dSPeter Dunlap * will also register the buffer for use). 1006a6d42e7dSPeter Dunlap */ 1007a6d42e7dSPeter Dunlap rc = ic->ic_transport_ops->it_buf_alloc(buf, buflen); 1008a6d42e7dSPeter Dunlap if (rc != 0) { 1009a6d42e7dSPeter Dunlap idm_conn_rele(ic); 1010a6d42e7dSPeter Dunlap kmem_cache_free(idm.idm_buf_cache, buf); 1011a6d42e7dSPeter Dunlap return (NULL); 1012a6d42e7dSPeter Dunlap } 1013a6d42e7dSPeter Dunlap /* Set the bufalloc'd flag */ 1014a6d42e7dSPeter Dunlap buf->idb_bufalloc = B_TRUE; 1015a6d42e7dSPeter Dunlap } else { 1016a6d42e7dSPeter Dunlap /* 101730e7468fSPeter Dunlap * For large transfers, Set the passed bufptr into 101830e7468fSPeter Dunlap * the buf handle, and register the handle with the 101930e7468fSPeter Dunlap * transport layer. As memory registration with the 102030e7468fSPeter Dunlap * transport layer is a time/cpu intensive operation, 102130e7468fSPeter Dunlap * for small transfers (up to a pre-defined bcopy 102230e7468fSPeter Dunlap * threshold), use pre-registered memory buffers 102330e7468fSPeter Dunlap * and bcopy data at the appropriate time. 1024a6d42e7dSPeter Dunlap */ 1025a6d42e7dSPeter Dunlap buf->idb_buf = bufptr; 1026a6d42e7dSPeter Dunlap 1027a6d42e7dSPeter Dunlap rc = ic->ic_transport_ops->it_buf_setup(buf); 1028a6d42e7dSPeter Dunlap if (rc != 0) { 1029a6d42e7dSPeter Dunlap idm_conn_rele(ic); 1030a6d42e7dSPeter Dunlap kmem_cache_free(idm.idm_buf_cache, buf); 1031a6d42e7dSPeter Dunlap return (NULL); 1032a6d42e7dSPeter Dunlap } 103330e7468fSPeter Dunlap /* 103430e7468fSPeter Dunlap * The transport layer is now expected to set the idb_bufalloc 103530e7468fSPeter Dunlap * correctly to indicate if resources have been allocated. 103630e7468fSPeter Dunlap */ 1037a6d42e7dSPeter Dunlap } 1038a6d42e7dSPeter Dunlap 103930e7468fSPeter Dunlap IDM_BUFPAT_SET(buf); 1040a6d42e7dSPeter Dunlap 104130e7468fSPeter Dunlap return (buf); 1042a6d42e7dSPeter Dunlap } 1043a6d42e7dSPeter Dunlap 1044a6d42e7dSPeter Dunlap /* 1045a6d42e7dSPeter Dunlap * idm_buf_free 1046a6d42e7dSPeter Dunlap * 1047a6d42e7dSPeter Dunlap * Release a buffer handle along with the associated buffer that was allocated 1048a6d42e7dSPeter Dunlap * or assigned with idm_buf_alloc 1049a6d42e7dSPeter Dunlap */ 1050a6d42e7dSPeter Dunlap void 1051a6d42e7dSPeter Dunlap idm_buf_free(idm_buf_t *buf) 1052a6d42e7dSPeter Dunlap { 1053a6d42e7dSPeter Dunlap idm_conn_t *ic = buf->idb_ic; 1054a6d42e7dSPeter Dunlap 1055a6d42e7dSPeter Dunlap 1056a6d42e7dSPeter Dunlap buf->idb_task_binding = NULL; 1057a6d42e7dSPeter Dunlap 1058a6d42e7dSPeter Dunlap if (buf->idb_bufalloc) { 1059a6d42e7dSPeter Dunlap ic->ic_transport_ops->it_buf_free(buf); 1060a6d42e7dSPeter Dunlap } else { 1061a6d42e7dSPeter Dunlap ic->ic_transport_ops->it_buf_teardown(buf); 1062a6d42e7dSPeter Dunlap } 1063a6d42e7dSPeter Dunlap kmem_cache_free(idm.idm_buf_cache, buf); 1064a6d42e7dSPeter Dunlap idm_conn_rele(ic); 1065a6d42e7dSPeter Dunlap } 1066a6d42e7dSPeter Dunlap 1067a6d42e7dSPeter Dunlap /* 1068a6d42e7dSPeter Dunlap * idm_buf_bind_in 1069a6d42e7dSPeter Dunlap * 1070a6d42e7dSPeter Dunlap * This function associates a buffer with a task. This is only for use by the 1071a6d42e7dSPeter Dunlap * iSCSI initiator that will have only one buffer per transfer direction 1072a6d42e7dSPeter Dunlap * 1073a6d42e7dSPeter Dunlap */ 1074a6d42e7dSPeter Dunlap void 1075a6d42e7dSPeter Dunlap idm_buf_bind_in(idm_task_t *idt, idm_buf_t *buf) 1076a6d42e7dSPeter Dunlap { 1077a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1078a6d42e7dSPeter Dunlap idm_buf_bind_in_locked(idt, buf); 1079a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1080a6d42e7dSPeter Dunlap } 1081a6d42e7dSPeter Dunlap 1082a6d42e7dSPeter Dunlap static void 1083a6d42e7dSPeter Dunlap idm_buf_bind_in_locked(idm_task_t *idt, idm_buf_t *buf) 1084a6d42e7dSPeter Dunlap { 1085a6d42e7dSPeter Dunlap buf->idb_task_binding = idt; 1086a6d42e7dSPeter Dunlap buf->idb_ic = idt->idt_ic; 1087a6d42e7dSPeter Dunlap idm_listbuf_insert(&idt->idt_inbufv, buf); 1088a6d42e7dSPeter Dunlap } 1089a6d42e7dSPeter Dunlap 1090a6d42e7dSPeter Dunlap void 1091a6d42e7dSPeter Dunlap idm_buf_bind_out(idm_task_t *idt, idm_buf_t *buf) 1092a6d42e7dSPeter Dunlap { 109330e7468fSPeter Dunlap /* 109430e7468fSPeter Dunlap * For small transfers, the iSER transport delegates the IDM 109530e7468fSPeter Dunlap * layer to bcopy the SCSI Write data for faster IOPS. 109630e7468fSPeter Dunlap */ 109730e7468fSPeter Dunlap if (buf->idb_bufbcopy == B_TRUE) { 109830e7468fSPeter Dunlap 109930e7468fSPeter Dunlap bcopy(buf->idb_bufptr, buf->idb_buf, buf->idb_buflen); 110030e7468fSPeter Dunlap } 1101a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1102a6d42e7dSPeter Dunlap idm_buf_bind_out_locked(idt, buf); 1103a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1104a6d42e7dSPeter Dunlap } 1105a6d42e7dSPeter Dunlap 1106a6d42e7dSPeter Dunlap static void 1107a6d42e7dSPeter Dunlap idm_buf_bind_out_locked(idm_task_t *idt, idm_buf_t *buf) 1108a6d42e7dSPeter Dunlap { 1109a6d42e7dSPeter Dunlap buf->idb_task_binding = idt; 1110a6d42e7dSPeter Dunlap buf->idb_ic = idt->idt_ic; 1111a6d42e7dSPeter Dunlap idm_listbuf_insert(&idt->idt_outbufv, buf); 1112a6d42e7dSPeter Dunlap } 1113a6d42e7dSPeter Dunlap 1114a6d42e7dSPeter Dunlap void 1115a6d42e7dSPeter Dunlap idm_buf_unbind_in(idm_task_t *idt, idm_buf_t *buf) 1116a6d42e7dSPeter Dunlap { 111730e7468fSPeter Dunlap /* 111830e7468fSPeter Dunlap * For small transfers, the iSER transport delegates the IDM 111930e7468fSPeter Dunlap * layer to bcopy the SCSI Read data into the read buufer 112030e7468fSPeter Dunlap * for faster IOPS. 112130e7468fSPeter Dunlap */ 112230e7468fSPeter Dunlap if (buf->idb_bufbcopy == B_TRUE) { 112330e7468fSPeter Dunlap bcopy(buf->idb_buf, buf->idb_bufptr, buf->idb_buflen); 112430e7468fSPeter Dunlap } 1125a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1126a6d42e7dSPeter Dunlap idm_buf_unbind_in_locked(idt, buf); 1127a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1128a6d42e7dSPeter Dunlap } 1129a6d42e7dSPeter Dunlap 1130a6d42e7dSPeter Dunlap static void 1131a6d42e7dSPeter Dunlap idm_buf_unbind_in_locked(idm_task_t *idt, idm_buf_t *buf) 1132a6d42e7dSPeter Dunlap { 1133a6d42e7dSPeter Dunlap list_remove(&idt->idt_inbufv, buf); 1134a6d42e7dSPeter Dunlap } 1135a6d42e7dSPeter Dunlap 1136a6d42e7dSPeter Dunlap void 1137a6d42e7dSPeter Dunlap idm_buf_unbind_out(idm_task_t *idt, idm_buf_t *buf) 1138a6d42e7dSPeter Dunlap { 1139a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1140a6d42e7dSPeter Dunlap idm_buf_unbind_out_locked(idt, buf); 1141a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1142a6d42e7dSPeter Dunlap } 1143a6d42e7dSPeter Dunlap 1144a6d42e7dSPeter Dunlap static void 1145a6d42e7dSPeter Dunlap idm_buf_unbind_out_locked(idm_task_t *idt, idm_buf_t *buf) 1146a6d42e7dSPeter Dunlap { 1147a6d42e7dSPeter Dunlap list_remove(&idt->idt_outbufv, buf); 1148a6d42e7dSPeter Dunlap } 1149a6d42e7dSPeter Dunlap 1150a6d42e7dSPeter Dunlap /* 1151a6d42e7dSPeter Dunlap * idm_buf_find() will lookup the idm_buf_t based on the relative offset in the 1152a6d42e7dSPeter Dunlap * iSCSI PDU 1153a6d42e7dSPeter Dunlap */ 1154a6d42e7dSPeter Dunlap idm_buf_t * 1155a6d42e7dSPeter Dunlap idm_buf_find(void *lbuf, size_t data_offset) 1156a6d42e7dSPeter Dunlap { 1157a6d42e7dSPeter Dunlap idm_buf_t *idb; 1158a6d42e7dSPeter Dunlap list_t *lst = (list_t *)lbuf; 1159a6d42e7dSPeter Dunlap 1160a6d42e7dSPeter Dunlap /* iterate through the list to find the buffer */ 1161a6d42e7dSPeter Dunlap for (idb = list_head(lst); idb != NULL; idb = list_next(lst, idb)) { 1162a6d42e7dSPeter Dunlap 1163a6d42e7dSPeter Dunlap ASSERT((idb->idb_ic->ic_conn_type == CONN_TYPE_TGT) || 1164a6d42e7dSPeter Dunlap (idb->idb_bufoffset == 0)); 1165a6d42e7dSPeter Dunlap 1166a6d42e7dSPeter Dunlap if ((data_offset >= idb->idb_bufoffset) && 1167a6d42e7dSPeter Dunlap (data_offset < (idb->idb_bufoffset + idb->idb_buflen))) { 1168a6d42e7dSPeter Dunlap 1169a6d42e7dSPeter Dunlap return (idb); 1170a6d42e7dSPeter Dunlap } 1171a6d42e7dSPeter Dunlap } 1172a6d42e7dSPeter Dunlap 1173a6d42e7dSPeter Dunlap return (NULL); 1174a6d42e7dSPeter Dunlap } 1175a6d42e7dSPeter Dunlap 117630e7468fSPeter Dunlap void 117730e7468fSPeter Dunlap idm_bufpat_set(idm_buf_t *idb) 117830e7468fSPeter Dunlap { 117930e7468fSPeter Dunlap idm_bufpat_t *bufpat; 118030e7468fSPeter Dunlap int len, i; 118130e7468fSPeter Dunlap 118230e7468fSPeter Dunlap len = idb->idb_buflen; 118330e7468fSPeter Dunlap len = (len / sizeof (idm_bufpat_t)) * sizeof (idm_bufpat_t); 118430e7468fSPeter Dunlap 118530e7468fSPeter Dunlap bufpat = idb->idb_buf; 118630e7468fSPeter Dunlap for (i = 0; i < len; i += sizeof (idm_bufpat_t)) { 118730e7468fSPeter Dunlap bufpat->bufpat_idb = idb; 118830e7468fSPeter Dunlap bufpat->bufpat_bufmagic = IDM_BUF_MAGIC; 118930e7468fSPeter Dunlap bufpat->bufpat_offset = i; 119030e7468fSPeter Dunlap bufpat++; 119130e7468fSPeter Dunlap } 119230e7468fSPeter Dunlap } 119330e7468fSPeter Dunlap 119430e7468fSPeter Dunlap boolean_t 119530e7468fSPeter Dunlap idm_bufpat_check(idm_buf_t *idb, int check_len, idm_bufpat_check_type_t type) 119630e7468fSPeter Dunlap { 119730e7468fSPeter Dunlap idm_bufpat_t *bufpat; 119830e7468fSPeter Dunlap int len, i; 119930e7468fSPeter Dunlap 120030e7468fSPeter Dunlap len = (type == BP_CHECK_QUICK) ? sizeof (idm_bufpat_t) : check_len; 120130e7468fSPeter Dunlap len = (len / sizeof (idm_bufpat_t)) * sizeof (idm_bufpat_t); 120230e7468fSPeter Dunlap ASSERT(len <= idb->idb_buflen); 120330e7468fSPeter Dunlap bufpat = idb->idb_buf; 120430e7468fSPeter Dunlap 120530e7468fSPeter Dunlap /* 120630e7468fSPeter Dunlap * Don't check the pattern in buffers that came from outside IDM 120730e7468fSPeter Dunlap * (these will be buffers from the initiator that we opted not 120830e7468fSPeter Dunlap * to double-buffer) 120930e7468fSPeter Dunlap */ 121030e7468fSPeter Dunlap if (!idb->idb_bufalloc) 121130e7468fSPeter Dunlap return (B_FALSE); 121230e7468fSPeter Dunlap 121330e7468fSPeter Dunlap /* 121430e7468fSPeter Dunlap * Return true if we find the pattern anywhere in the buffer 121530e7468fSPeter Dunlap */ 121630e7468fSPeter Dunlap for (i = 0; i < len; i += sizeof (idm_bufpat_t)) { 121730e7468fSPeter Dunlap if (BUFPAT_MATCH(bufpat, idb)) { 121830e7468fSPeter Dunlap IDM_CONN_LOG(CE_WARN, "idm_bufpat_check found: " 121930e7468fSPeter Dunlap "idb %p bufpat %p " 122030e7468fSPeter Dunlap "bufpat_idb=%p bufmagic=%08x offset=%08x", 122130e7468fSPeter Dunlap (void *)idb, (void *)bufpat, bufpat->bufpat_idb, 122230e7468fSPeter Dunlap bufpat->bufpat_bufmagic, bufpat->bufpat_offset); 122330e7468fSPeter Dunlap DTRACE_PROBE2(bufpat__pattern__found, 122430e7468fSPeter Dunlap idm_buf_t *, idb, idm_bufpat_t *, bufpat); 122530e7468fSPeter Dunlap if (type == BP_CHECK_ASSERT) { 122630e7468fSPeter Dunlap ASSERT(0); 122730e7468fSPeter Dunlap } 122830e7468fSPeter Dunlap return (B_TRUE); 122930e7468fSPeter Dunlap } 123030e7468fSPeter Dunlap bufpat++; 123130e7468fSPeter Dunlap } 123230e7468fSPeter Dunlap 123330e7468fSPeter Dunlap return (B_FALSE); 123430e7468fSPeter Dunlap } 123530e7468fSPeter Dunlap 1236a6d42e7dSPeter Dunlap /* 1237a6d42e7dSPeter Dunlap * idm_task_alloc 1238a6d42e7dSPeter Dunlap * 1239a6d42e7dSPeter Dunlap * This function will allocate a idm_task_t structure. A task tag is also 1240a6d42e7dSPeter Dunlap * generated and saved in idt_tt. The task is not active. 1241a6d42e7dSPeter Dunlap */ 1242a6d42e7dSPeter Dunlap idm_task_t * 1243a6d42e7dSPeter Dunlap idm_task_alloc(idm_conn_t *ic) 1244a6d42e7dSPeter Dunlap { 1245a6d42e7dSPeter Dunlap idm_task_t *idt; 1246a6d42e7dSPeter Dunlap 1247a6d42e7dSPeter Dunlap ASSERT(ic != NULL); 1248a6d42e7dSPeter Dunlap 1249a6d42e7dSPeter Dunlap /* Don't allocate new tasks if we are not in FFP */ 1250a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 1251a6d42e7dSPeter Dunlap if (!ic->ic_ffp) { 1252a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 1253a6d42e7dSPeter Dunlap return (NULL); 1254a6d42e7dSPeter Dunlap } 1255a6d42e7dSPeter Dunlap idt = kmem_cache_alloc(idm.idm_task_cache, KM_NOSLEEP); 1256a6d42e7dSPeter Dunlap if (idt == NULL) { 1257a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 1258a6d42e7dSPeter Dunlap return (NULL); 1259a6d42e7dSPeter Dunlap } 1260a6d42e7dSPeter Dunlap 1261a6d42e7dSPeter Dunlap ASSERT(list_is_empty(&idt->idt_inbufv)); 1262a6d42e7dSPeter Dunlap ASSERT(list_is_empty(&idt->idt_outbufv)); 1263a6d42e7dSPeter Dunlap 1264a6d42e7dSPeter Dunlap idm_conn_hold(ic); 1265a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 1266a6d42e7dSPeter Dunlap 1267a6d42e7dSPeter Dunlap idt->idt_state = TASK_IDLE; 1268a6d42e7dSPeter Dunlap idt->idt_ic = ic; 1269a6d42e7dSPeter Dunlap idt->idt_private = NULL; 1270a6d42e7dSPeter Dunlap idt->idt_exp_datasn = 0; 1271a6d42e7dSPeter Dunlap idt->idt_exp_rttsn = 0; 1272a6d42e7dSPeter Dunlap 1273a6d42e7dSPeter Dunlap return (idt); 1274a6d42e7dSPeter Dunlap } 1275a6d42e7dSPeter Dunlap 1276a6d42e7dSPeter Dunlap /* 1277a6d42e7dSPeter Dunlap * idm_task_start 1278a6d42e7dSPeter Dunlap * 127930e7468fSPeter Dunlap * Mark the task active and initialize some stats. The caller 1280a6d42e7dSPeter Dunlap * sets up the idm_task_t structure with a prior call to idm_task_alloc(). 1281a6d42e7dSPeter Dunlap * The task service does not function as a task/work engine, it is the 1282a6d42e7dSPeter Dunlap * responsibility of the initiator to start the data transfer and free the 1283a6d42e7dSPeter Dunlap * resources. 1284a6d42e7dSPeter Dunlap */ 1285a6d42e7dSPeter Dunlap void 1286a6d42e7dSPeter Dunlap idm_task_start(idm_task_t *idt, uintptr_t handle) 1287a6d42e7dSPeter Dunlap { 1288a6d42e7dSPeter Dunlap ASSERT(idt != NULL); 1289a6d42e7dSPeter Dunlap 1290a6d42e7dSPeter Dunlap /* mark the task as ACTIVE */ 1291a6d42e7dSPeter Dunlap idt->idt_state = TASK_ACTIVE; 1292a6d42e7dSPeter Dunlap idt->idt_client_handle = handle; 1293a6d42e7dSPeter Dunlap idt->idt_tx_to_ini_start = idt->idt_tx_to_ini_done = 129430e7468fSPeter Dunlap idt->idt_rx_from_ini_start = idt->idt_rx_from_ini_done = 129530e7468fSPeter Dunlap idt->idt_tx_bytes = idt->idt_rx_bytes = 0; 1296a6d42e7dSPeter Dunlap } 1297a6d42e7dSPeter Dunlap 1298a6d42e7dSPeter Dunlap /* 1299a6d42e7dSPeter Dunlap * idm_task_done 1300a6d42e7dSPeter Dunlap * 130130e7468fSPeter Dunlap * This function sets the state to indicate that the task is no longer active. 1302a6d42e7dSPeter Dunlap */ 1303a6d42e7dSPeter Dunlap void 1304a6d42e7dSPeter Dunlap idm_task_done(idm_task_t *idt) 1305a6d42e7dSPeter Dunlap { 1306a6d42e7dSPeter Dunlap ASSERT(idt != NULL); 1307a6d42e7dSPeter Dunlap 130830e7468fSPeter Dunlap mutex_enter(&idt->idt_mutex); 1309a6d42e7dSPeter Dunlap idt->idt_state = TASK_IDLE; 131030e7468fSPeter Dunlap mutex_exit(&idt->idt_mutex); 131130e7468fSPeter Dunlap 131230e7468fSPeter Dunlap /* 131330e7468fSPeter Dunlap * Although unlikely it is possible for a reference to come in after 131430e7468fSPeter Dunlap * the client has decided the task is over but before we've marked 131530e7468fSPeter Dunlap * the task idle. One specific unavoidable scenario is the case where 131630e7468fSPeter Dunlap * received PDU with the matching ITT/TTT results in a successful 131730e7468fSPeter Dunlap * lookup of this task. We are at the mercy of the remote node in 131830e7468fSPeter Dunlap * that case so we need to handle it. Now that the task state 131930e7468fSPeter Dunlap * has changed no more references will occur so a simple call to 132030e7468fSPeter Dunlap * idm_refcnt_wait_ref should deal with the situation. 132130e7468fSPeter Dunlap */ 132230e7468fSPeter Dunlap idm_refcnt_wait_ref(&idt->idt_refcnt); 1323a6d42e7dSPeter Dunlap idm_refcnt_reset(&idt->idt_refcnt); 1324a6d42e7dSPeter Dunlap } 1325a6d42e7dSPeter Dunlap 1326a6d42e7dSPeter Dunlap /* 1327a6d42e7dSPeter Dunlap * idm_task_free 1328a6d42e7dSPeter Dunlap * 1329a6d42e7dSPeter Dunlap * This function will free the Task Tag and the memory allocated for the task 1330a6d42e7dSPeter Dunlap * idm_task_done should be called prior to this call 1331a6d42e7dSPeter Dunlap */ 1332a6d42e7dSPeter Dunlap void 1333a6d42e7dSPeter Dunlap idm_task_free(idm_task_t *idt) 1334a6d42e7dSPeter Dunlap { 133530e7468fSPeter Dunlap idm_conn_t *ic; 1336a6d42e7dSPeter Dunlap 1337a6d42e7dSPeter Dunlap ASSERT(idt != NULL); 133830e7468fSPeter Dunlap ASSERT(idt->idt_refcnt.ir_refcnt == 0); 1339a6d42e7dSPeter Dunlap ASSERT(idt->idt_state == TASK_IDLE); 1340a6d42e7dSPeter Dunlap 134130e7468fSPeter Dunlap ic = idt->idt_ic; 134230e7468fSPeter Dunlap 1343a6d42e7dSPeter Dunlap /* 1344a6d42e7dSPeter Dunlap * It's possible for items to still be in the idt_inbufv list if 1345a6d42e7dSPeter Dunlap * they were added after idm_task_cleanup was called. We rely on 1346a6d42e7dSPeter Dunlap * STMF to free all buffers associated with the task however STMF 1347a6d42e7dSPeter Dunlap * doesn't know that we have this reference to the buffers. 1348a6d42e7dSPeter Dunlap * Use list_create so that we don't end up with stale references 1349a6d42e7dSPeter Dunlap * to these buffers. 1350a6d42e7dSPeter Dunlap */ 1351a6d42e7dSPeter Dunlap list_create(&idt->idt_inbufv, sizeof (idm_buf_t), 1352a6d42e7dSPeter Dunlap offsetof(idm_buf_t, idb_buflink)); 1353a6d42e7dSPeter Dunlap list_create(&idt->idt_outbufv, sizeof (idm_buf_t), 1354a6d42e7dSPeter Dunlap offsetof(idm_buf_t, idb_buflink)); 1355a6d42e7dSPeter Dunlap 1356a6d42e7dSPeter Dunlap kmem_cache_free(idm.idm_task_cache, idt); 1357a6d42e7dSPeter Dunlap 1358a6d42e7dSPeter Dunlap idm_conn_rele(ic); 1359a6d42e7dSPeter Dunlap } 1360a6d42e7dSPeter Dunlap 1361a6d42e7dSPeter Dunlap /* 136230e7468fSPeter Dunlap * idm_task_find_common 136330e7468fSPeter Dunlap * common code for idm_task_find() and idm_task_find_and_complete() 1364a6d42e7dSPeter Dunlap */ 1365a6d42e7dSPeter Dunlap /*ARGSUSED*/ 136630e7468fSPeter Dunlap static idm_task_t * 136730e7468fSPeter Dunlap idm_task_find_common(idm_conn_t *ic, uint32_t itt, uint32_t ttt, 136830e7468fSPeter Dunlap boolean_t complete) 1369a6d42e7dSPeter Dunlap { 1370a6d42e7dSPeter Dunlap uint32_t tt, client_handle; 1371a6d42e7dSPeter Dunlap idm_task_t *idt; 1372a6d42e7dSPeter Dunlap 1373a6d42e7dSPeter Dunlap /* 1374a6d42e7dSPeter Dunlap * Must match both itt and ttt. The table is indexed by itt 1375a6d42e7dSPeter Dunlap * for initiator connections and ttt for target connections. 1376a6d42e7dSPeter Dunlap */ 1377a6d42e7dSPeter Dunlap if (IDM_CONN_ISTGT(ic)) { 1378a6d42e7dSPeter Dunlap tt = ttt; 1379a6d42e7dSPeter Dunlap client_handle = itt; 1380a6d42e7dSPeter Dunlap } else { 1381a6d42e7dSPeter Dunlap tt = itt; 1382a6d42e7dSPeter Dunlap client_handle = ttt; 1383a6d42e7dSPeter Dunlap } 1384a6d42e7dSPeter Dunlap 1385a6d42e7dSPeter Dunlap rw_enter(&idm.idm_taskid_table_lock, RW_READER); 1386a6d42e7dSPeter Dunlap if (tt >= idm.idm_taskid_max) { 1387a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1388a6d42e7dSPeter Dunlap return (NULL); 1389a6d42e7dSPeter Dunlap } 1390a6d42e7dSPeter Dunlap 1391a6d42e7dSPeter Dunlap idt = idm.idm_taskid_table[tt]; 1392a6d42e7dSPeter Dunlap 1393a6d42e7dSPeter Dunlap if (idt != NULL) { 1394a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1395a6d42e7dSPeter Dunlap if ((idt->idt_state != TASK_ACTIVE) || 139630e7468fSPeter Dunlap (idt->idt_ic != ic) || 1397a6d42e7dSPeter Dunlap (IDM_CONN_ISTGT(ic) && 1398a6d42e7dSPeter Dunlap (idt->idt_client_handle != client_handle))) { 1399a6d42e7dSPeter Dunlap /* 140030e7468fSPeter Dunlap * Task doesn't match or task is aborting and 140130e7468fSPeter Dunlap * we don't want any more references. 1402a6d42e7dSPeter Dunlap */ 140330e7468fSPeter Dunlap if ((idt->idt_ic != ic) && 140430e7468fSPeter Dunlap (idt->idt_state == TASK_ACTIVE) && 140530e7468fSPeter Dunlap (IDM_CONN_ISINI(ic) || idt->idt_client_handle == 140630e7468fSPeter Dunlap client_handle)) { 140730e7468fSPeter Dunlap IDM_CONN_LOG(CE_WARN, 140830e7468fSPeter Dunlap "idm_task_find: wrong connection %p != %p", 140930e7468fSPeter Dunlap (void *)ic, (void *)idt->idt_ic); 141030e7468fSPeter Dunlap } 1411a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1412a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1413a6d42e7dSPeter Dunlap return (NULL); 1414a6d42e7dSPeter Dunlap } 1415a6d42e7dSPeter Dunlap idm_task_hold(idt); 141630e7468fSPeter Dunlap /* 141730e7468fSPeter Dunlap * Set the task state to TASK_COMPLETE so it can no longer 141830e7468fSPeter Dunlap * be found or aborted. 141930e7468fSPeter Dunlap */ 142030e7468fSPeter Dunlap if (B_TRUE == complete) 142130e7468fSPeter Dunlap idt->idt_state = TASK_COMPLETE; 1422a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1423a6d42e7dSPeter Dunlap } 1424a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1425a6d42e7dSPeter Dunlap 1426a6d42e7dSPeter Dunlap return (idt); 1427a6d42e7dSPeter Dunlap } 1428a6d42e7dSPeter Dunlap 142930e7468fSPeter Dunlap /* 143030e7468fSPeter Dunlap * This function looks up a task by task tag. 143130e7468fSPeter Dunlap */ 143230e7468fSPeter Dunlap idm_task_t * 143330e7468fSPeter Dunlap idm_task_find(idm_conn_t *ic, uint32_t itt, uint32_t ttt) 143430e7468fSPeter Dunlap { 143530e7468fSPeter Dunlap return (idm_task_find_common(ic, itt, ttt, B_FALSE)); 143630e7468fSPeter Dunlap } 143730e7468fSPeter Dunlap 143830e7468fSPeter Dunlap /* 143930e7468fSPeter Dunlap * This function looks up a task by task tag. If found, the task state 144030e7468fSPeter Dunlap * is atomically set to TASK_COMPLETE so it can longer be found or aborted. 144130e7468fSPeter Dunlap */ 144230e7468fSPeter Dunlap idm_task_t * 144330e7468fSPeter Dunlap idm_task_find_and_complete(idm_conn_t *ic, uint32_t itt, uint32_t ttt) 144430e7468fSPeter Dunlap { 144530e7468fSPeter Dunlap return (idm_task_find_common(ic, itt, ttt, B_TRUE)); 144630e7468fSPeter Dunlap } 144730e7468fSPeter Dunlap 1448a6d42e7dSPeter Dunlap /* 1449a6d42e7dSPeter Dunlap * idm_task_find_by_handle 1450a6d42e7dSPeter Dunlap * 1451a6d42e7dSPeter Dunlap * This function looks up a task by the client-private idt_client_handle. 1452a6d42e7dSPeter Dunlap * 1453a6d42e7dSPeter Dunlap * This function should NEVER be called in the performance path. It is 1454a6d42e7dSPeter Dunlap * intended strictly for error recovery/task management. 1455a6d42e7dSPeter Dunlap */ 1456a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1457a6d42e7dSPeter Dunlap void * 1458a6d42e7dSPeter Dunlap idm_task_find_by_handle(idm_conn_t *ic, uintptr_t handle) 1459a6d42e7dSPeter Dunlap { 1460a6d42e7dSPeter Dunlap idm_task_t *idt = NULL; 1461a6d42e7dSPeter Dunlap int idx = 0; 1462a6d42e7dSPeter Dunlap 1463a6d42e7dSPeter Dunlap rw_enter(&idm.idm_taskid_table_lock, RW_READER); 1464a6d42e7dSPeter Dunlap 1465a6d42e7dSPeter Dunlap for (idx = 0; idx < idm.idm_taskid_max; idx++) { 1466a6d42e7dSPeter Dunlap idt = idm.idm_taskid_table[idx]; 1467a6d42e7dSPeter Dunlap 1468a6d42e7dSPeter Dunlap if (idt == NULL) 1469a6d42e7dSPeter Dunlap continue; 1470a6d42e7dSPeter Dunlap 1471a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1472a6d42e7dSPeter Dunlap 1473a6d42e7dSPeter Dunlap if (idt->idt_state != TASK_ACTIVE) { 1474a6d42e7dSPeter Dunlap /* 1475a6d42e7dSPeter Dunlap * Task is either in suspend, abort, or already 1476a6d42e7dSPeter Dunlap * complete. 1477a6d42e7dSPeter Dunlap */ 1478a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1479a6d42e7dSPeter Dunlap continue; 1480a6d42e7dSPeter Dunlap } 1481a6d42e7dSPeter Dunlap 1482a6d42e7dSPeter Dunlap if (idt->idt_client_handle == handle) { 1483a6d42e7dSPeter Dunlap idm_task_hold(idt); 1484a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1485a6d42e7dSPeter Dunlap break; 1486a6d42e7dSPeter Dunlap } 1487a6d42e7dSPeter Dunlap 1488a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1489a6d42e7dSPeter Dunlap } 1490a6d42e7dSPeter Dunlap 1491a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1492a6d42e7dSPeter Dunlap 1493a6d42e7dSPeter Dunlap if ((idt == NULL) || (idx == idm.idm_taskid_max)) 1494a6d42e7dSPeter Dunlap return (NULL); 1495a6d42e7dSPeter Dunlap 1496a6d42e7dSPeter Dunlap return (idt->idt_private); 1497a6d42e7dSPeter Dunlap } 1498a6d42e7dSPeter Dunlap 1499a6d42e7dSPeter Dunlap void 1500a6d42e7dSPeter Dunlap idm_task_hold(idm_task_t *idt) 1501a6d42e7dSPeter Dunlap { 1502a6d42e7dSPeter Dunlap idm_refcnt_hold(&idt->idt_refcnt); 1503a6d42e7dSPeter Dunlap } 1504a6d42e7dSPeter Dunlap 1505a6d42e7dSPeter Dunlap void 1506a6d42e7dSPeter Dunlap idm_task_rele(idm_task_t *idt) 1507a6d42e7dSPeter Dunlap { 1508a6d42e7dSPeter Dunlap idm_refcnt_rele(&idt->idt_refcnt); 1509a6d42e7dSPeter Dunlap } 1510a6d42e7dSPeter Dunlap 1511a6d42e7dSPeter Dunlap void 1512a6d42e7dSPeter Dunlap idm_task_abort(idm_conn_t *ic, idm_task_t *idt, idm_abort_type_t abort_type) 1513a6d42e7dSPeter Dunlap { 1514a6d42e7dSPeter Dunlap idm_task_t *task; 1515a6d42e7dSPeter Dunlap int idx; 1516a6d42e7dSPeter Dunlap 1517a6d42e7dSPeter Dunlap /* 1518a6d42e7dSPeter Dunlap * Passing NULL as the task indicates that all tasks 1519a6d42e7dSPeter Dunlap * for this connection should be aborted. 1520a6d42e7dSPeter Dunlap */ 1521a6d42e7dSPeter Dunlap if (idt == NULL) { 1522a6d42e7dSPeter Dunlap /* 1523a6d42e7dSPeter Dunlap * Only the connection state machine should ask for 1524a6d42e7dSPeter Dunlap * all tasks to abort and this should never happen in FFP. 1525a6d42e7dSPeter Dunlap */ 1526a6d42e7dSPeter Dunlap ASSERT(!ic->ic_ffp); 1527a6d42e7dSPeter Dunlap rw_enter(&idm.idm_taskid_table_lock, RW_READER); 1528a6d42e7dSPeter Dunlap for (idx = 0; idx < idm.idm_taskid_max; idx++) { 1529a6d42e7dSPeter Dunlap task = idm.idm_taskid_table[idx]; 153030e7468fSPeter Dunlap if (task == NULL) 153130e7468fSPeter Dunlap continue; 153230e7468fSPeter Dunlap mutex_enter(&task->idt_mutex); 153330e7468fSPeter Dunlap if ((task->idt_state != TASK_IDLE) && 153430e7468fSPeter Dunlap (task->idt_state != TASK_COMPLETE) && 1535a6d42e7dSPeter Dunlap (task->idt_ic == ic)) { 1536a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1537a6d42e7dSPeter Dunlap idm_task_abort_one(ic, task, abort_type); 1538a6d42e7dSPeter Dunlap rw_enter(&idm.idm_taskid_table_lock, RW_READER); 153930e7468fSPeter Dunlap } else 154030e7468fSPeter Dunlap mutex_exit(&task->idt_mutex); 1541a6d42e7dSPeter Dunlap } 1542a6d42e7dSPeter Dunlap rw_exit(&idm.idm_taskid_table_lock); 1543a6d42e7dSPeter Dunlap } else { 154430e7468fSPeter Dunlap mutex_enter(&idt->idt_mutex); 1545a6d42e7dSPeter Dunlap idm_task_abort_one(ic, idt, abort_type); 1546a6d42e7dSPeter Dunlap } 1547a6d42e7dSPeter Dunlap } 1548a6d42e7dSPeter Dunlap 1549a6d42e7dSPeter Dunlap static void 1550a6d42e7dSPeter Dunlap idm_task_abort_unref_cb(void *ref) 1551a6d42e7dSPeter Dunlap { 1552a6d42e7dSPeter Dunlap idm_task_t *idt = ref; 1553a6d42e7dSPeter Dunlap 1554a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1555a6d42e7dSPeter Dunlap switch (idt->idt_state) { 1556a6d42e7dSPeter Dunlap case TASK_SUSPENDING: 1557a6d42e7dSPeter Dunlap idt->idt_state = TASK_SUSPENDED; 1558a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1559a6d42e7dSPeter Dunlap idm_task_aborted(idt, IDM_STATUS_SUSPENDED); 1560a6d42e7dSPeter Dunlap return; 1561a6d42e7dSPeter Dunlap case TASK_ABORTING: 1562a6d42e7dSPeter Dunlap idt->idt_state = TASK_ABORTED; 1563a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1564a6d42e7dSPeter Dunlap idm_task_aborted(idt, IDM_STATUS_ABORTED); 1565a6d42e7dSPeter Dunlap return; 1566a6d42e7dSPeter Dunlap default: 1567a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1568a6d42e7dSPeter Dunlap ASSERT(0); 1569a6d42e7dSPeter Dunlap break; 1570a6d42e7dSPeter Dunlap } 1571a6d42e7dSPeter Dunlap } 1572a6d42e7dSPeter Dunlap 157330e7468fSPeter Dunlap /* 157430e7468fSPeter Dunlap * Abort the idm task. 157530e7468fSPeter Dunlap * Caller must hold the task mutex, which will be released before return 157630e7468fSPeter Dunlap */ 1577a6d42e7dSPeter Dunlap static void 1578a6d42e7dSPeter Dunlap idm_task_abort_one(idm_conn_t *ic, idm_task_t *idt, idm_abort_type_t abort_type) 1579a6d42e7dSPeter Dunlap { 1580a6d42e7dSPeter Dunlap /* Caller must hold connection mutex */ 158130e7468fSPeter Dunlap ASSERT(mutex_owned(&idt->idt_mutex)); 1582a6d42e7dSPeter Dunlap switch (idt->idt_state) { 1583a6d42e7dSPeter Dunlap case TASK_ACTIVE: 1584a6d42e7dSPeter Dunlap switch (abort_type) { 1585a6d42e7dSPeter Dunlap case AT_INTERNAL_SUSPEND: 1586a6d42e7dSPeter Dunlap /* Call transport to release any resources */ 1587a6d42e7dSPeter Dunlap idt->idt_state = TASK_SUSPENDING; 1588a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1589a6d42e7dSPeter Dunlap ic->ic_transport_ops->it_free_task_rsrc(idt); 1590a6d42e7dSPeter Dunlap 1591a6d42e7dSPeter Dunlap /* 1592a6d42e7dSPeter Dunlap * Wait for outstanding references. When all 1593a6d42e7dSPeter Dunlap * references are released the callback will call 1594a6d42e7dSPeter Dunlap * idm_task_aborted(). 1595a6d42e7dSPeter Dunlap */ 1596a6d42e7dSPeter Dunlap idm_refcnt_async_wait_ref(&idt->idt_refcnt, 1597a6d42e7dSPeter Dunlap &idm_task_abort_unref_cb); 1598a6d42e7dSPeter Dunlap return; 1599a6d42e7dSPeter Dunlap case AT_INTERNAL_ABORT: 1600a6d42e7dSPeter Dunlap case AT_TASK_MGMT_ABORT: 1601a6d42e7dSPeter Dunlap idt->idt_state = TASK_ABORTING; 1602a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1603a6d42e7dSPeter Dunlap ic->ic_transport_ops->it_free_task_rsrc(idt); 1604a6d42e7dSPeter Dunlap 1605a6d42e7dSPeter Dunlap /* 1606a6d42e7dSPeter Dunlap * Wait for outstanding references. When all 1607a6d42e7dSPeter Dunlap * references are released the callback will call 1608a6d42e7dSPeter Dunlap * idm_task_aborted(). 1609a6d42e7dSPeter Dunlap */ 1610a6d42e7dSPeter Dunlap idm_refcnt_async_wait_ref(&idt->idt_refcnt, 1611a6d42e7dSPeter Dunlap &idm_task_abort_unref_cb); 1612a6d42e7dSPeter Dunlap return; 1613a6d42e7dSPeter Dunlap default: 1614a6d42e7dSPeter Dunlap ASSERT(0); 1615a6d42e7dSPeter Dunlap } 1616a6d42e7dSPeter Dunlap break; 1617a6d42e7dSPeter Dunlap case TASK_SUSPENDING: 1618a6d42e7dSPeter Dunlap /* Already called transport_free_task_rsrc(); */ 1619a6d42e7dSPeter Dunlap switch (abort_type) { 1620a6d42e7dSPeter Dunlap case AT_INTERNAL_SUSPEND: 1621a6d42e7dSPeter Dunlap /* Already doing it */ 1622a6d42e7dSPeter Dunlap break; 1623a6d42e7dSPeter Dunlap case AT_INTERNAL_ABORT: 1624a6d42e7dSPeter Dunlap case AT_TASK_MGMT_ABORT: 1625a6d42e7dSPeter Dunlap idt->idt_state = TASK_ABORTING; 1626a6d42e7dSPeter Dunlap break; 1627a6d42e7dSPeter Dunlap default: 1628a6d42e7dSPeter Dunlap ASSERT(0); 1629a6d42e7dSPeter Dunlap } 1630a6d42e7dSPeter Dunlap break; 1631a6d42e7dSPeter Dunlap case TASK_SUSPENDED: 1632a6d42e7dSPeter Dunlap /* Already called transport_free_task_rsrc(); */ 1633a6d42e7dSPeter Dunlap switch (abort_type) { 1634a6d42e7dSPeter Dunlap case AT_INTERNAL_SUSPEND: 1635a6d42e7dSPeter Dunlap /* Already doing it */ 1636a6d42e7dSPeter Dunlap break; 1637a6d42e7dSPeter Dunlap case AT_INTERNAL_ABORT: 1638a6d42e7dSPeter Dunlap case AT_TASK_MGMT_ABORT: 1639a6d42e7dSPeter Dunlap idt->idt_state = TASK_ABORTING; 1640a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1641a6d42e7dSPeter Dunlap 1642a6d42e7dSPeter Dunlap /* 1643a6d42e7dSPeter Dunlap * We could probably call idm_task_aborted directly 1644a6d42e7dSPeter Dunlap * here but we may be holding the conn lock. It's 1645a6d42e7dSPeter Dunlap * easier to just switch contexts. Even though 1646a6d42e7dSPeter Dunlap * we shouldn't really have any references we'll 1647a6d42e7dSPeter Dunlap * set the state to TASK_ABORTING instead of 1648a6d42e7dSPeter Dunlap * TASK_ABORTED so we can use the same code path. 1649a6d42e7dSPeter Dunlap */ 1650a6d42e7dSPeter Dunlap idm_refcnt_async_wait_ref(&idt->idt_refcnt, 1651a6d42e7dSPeter Dunlap &idm_task_abort_unref_cb); 1652a6d42e7dSPeter Dunlap return; 1653a6d42e7dSPeter Dunlap default: 1654a6d42e7dSPeter Dunlap ASSERT(0); 1655a6d42e7dSPeter Dunlap } 1656a6d42e7dSPeter Dunlap break; 1657a6d42e7dSPeter Dunlap case TASK_ABORTING: 1658a6d42e7dSPeter Dunlap case TASK_ABORTED: 1659a6d42e7dSPeter Dunlap switch (abort_type) { 1660a6d42e7dSPeter Dunlap case AT_INTERNAL_SUSPEND: 1661a6d42e7dSPeter Dunlap /* We're already past this point... */ 1662a6d42e7dSPeter Dunlap case AT_INTERNAL_ABORT: 1663a6d42e7dSPeter Dunlap case AT_TASK_MGMT_ABORT: 1664a6d42e7dSPeter Dunlap /* Already doing it */ 1665a6d42e7dSPeter Dunlap break; 1666a6d42e7dSPeter Dunlap default: 1667a6d42e7dSPeter Dunlap ASSERT(0); 1668a6d42e7dSPeter Dunlap } 1669a6d42e7dSPeter Dunlap break; 1670a6d42e7dSPeter Dunlap case TASK_COMPLETE: 1671a6d42e7dSPeter Dunlap /* 1672a6d42e7dSPeter Dunlap * In this case, let it go. The status has already been 1673a6d42e7dSPeter Dunlap * sent (which may or may not get successfully transmitted) 1674a6d42e7dSPeter Dunlap * and we don't want to end up in a race between completing 1675a6d42e7dSPeter Dunlap * the status PDU and marking the task suspended. 1676a6d42e7dSPeter Dunlap */ 1677a6d42e7dSPeter Dunlap break; 1678a6d42e7dSPeter Dunlap default: 1679a6d42e7dSPeter Dunlap ASSERT(0); 1680a6d42e7dSPeter Dunlap } 1681a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1682a6d42e7dSPeter Dunlap } 1683a6d42e7dSPeter Dunlap 1684a6d42e7dSPeter Dunlap static void 1685a6d42e7dSPeter Dunlap idm_task_aborted(idm_task_t *idt, idm_status_t status) 1686a6d42e7dSPeter Dunlap { 1687a6d42e7dSPeter Dunlap (*idt->idt_ic->ic_conn_ops.icb_task_aborted)(idt, status); 1688a6d42e7dSPeter Dunlap } 1689a6d42e7dSPeter Dunlap 1690a6d42e7dSPeter Dunlap void 1691a6d42e7dSPeter Dunlap idm_task_cleanup(idm_task_t *idt) 1692a6d42e7dSPeter Dunlap { 1693a6d42e7dSPeter Dunlap idm_buf_t *idb, *next_idb; 1694a6d42e7dSPeter Dunlap list_t tmp_buflist; 1695a6d42e7dSPeter Dunlap ASSERT((idt->idt_state == TASK_SUSPENDED) || 1696a6d42e7dSPeter Dunlap (idt->idt_state == TASK_ABORTED)); 1697a6d42e7dSPeter Dunlap 1698a6d42e7dSPeter Dunlap list_create(&tmp_buflist, sizeof (idm_buf_t), 1699a6d42e7dSPeter Dunlap offsetof(idm_buf_t, idb_buflink)); 1700a6d42e7dSPeter Dunlap 1701a6d42e7dSPeter Dunlap /* 1702a6d42e7dSPeter Dunlap * Remove all the buffers from the task and add them to a 1703a6d42e7dSPeter Dunlap * temporary local list -- we do this so that we can hold 1704a6d42e7dSPeter Dunlap * the task lock and prevent the task from going away if 1705a6d42e7dSPeter Dunlap * the client decides to call idm_task_done/idm_task_free. 1706a6d42e7dSPeter Dunlap * This could happen during abort in iscsit. 1707a6d42e7dSPeter Dunlap */ 1708a6d42e7dSPeter Dunlap mutex_enter(&idt->idt_mutex); 1709a6d42e7dSPeter Dunlap for (idb = list_head(&idt->idt_inbufv); 1710a6d42e7dSPeter Dunlap idb != NULL; 1711a6d42e7dSPeter Dunlap idb = next_idb) { 1712a6d42e7dSPeter Dunlap next_idb = list_next(&idt->idt_inbufv, idb); 1713a6d42e7dSPeter Dunlap idm_buf_unbind_in_locked(idt, idb); 1714a6d42e7dSPeter Dunlap list_insert_tail(&tmp_buflist, idb); 1715a6d42e7dSPeter Dunlap } 1716a6d42e7dSPeter Dunlap 1717a6d42e7dSPeter Dunlap for (idb = list_head(&idt->idt_outbufv); 1718a6d42e7dSPeter Dunlap idb != NULL; 1719a6d42e7dSPeter Dunlap idb = next_idb) { 1720a6d42e7dSPeter Dunlap next_idb = list_next(&idt->idt_outbufv, idb); 1721a6d42e7dSPeter Dunlap idm_buf_unbind_out_locked(idt, idb); 1722a6d42e7dSPeter Dunlap list_insert_tail(&tmp_buflist, idb); 1723a6d42e7dSPeter Dunlap } 1724a6d42e7dSPeter Dunlap mutex_exit(&idt->idt_mutex); 1725a6d42e7dSPeter Dunlap 1726a6d42e7dSPeter Dunlap for (idb = list_head(&tmp_buflist); idb != NULL; idb = next_idb) { 1727a6d42e7dSPeter Dunlap next_idb = list_next(&tmp_buflist, idb); 1728a6d42e7dSPeter Dunlap list_remove(&tmp_buflist, idb); 1729a6d42e7dSPeter Dunlap (*idb->idb_buf_cb)(idb, IDM_STATUS_ABORTED); 1730a6d42e7dSPeter Dunlap } 1731a6d42e7dSPeter Dunlap list_destroy(&tmp_buflist); 1732a6d42e7dSPeter Dunlap } 1733a6d42e7dSPeter Dunlap 1734a6d42e7dSPeter Dunlap 1735a6d42e7dSPeter Dunlap /* 1736a6d42e7dSPeter Dunlap * idm_pdu_tx 1737a6d42e7dSPeter Dunlap * 1738a6d42e7dSPeter Dunlap * This is IDM's implementation of the 'Send_Control' operational primitive. 1739a6d42e7dSPeter Dunlap * This function is invoked by an initiator iSCSI layer requesting the transfer 1740a6d42e7dSPeter Dunlap * of a iSCSI command PDU or a target iSCSI layer requesting the transfer of a 1741a6d42e7dSPeter Dunlap * iSCSI response PDU. The PDU will be transmitted as-is by the local Datamover 1742a6d42e7dSPeter Dunlap * layer to the peer iSCSI layer in the remote iSCSI node. The connection info 1743a6d42e7dSPeter Dunlap * and iSCSI PDU-specific qualifiers namely BHS, AHS, DataDescriptor and Size 1744a6d42e7dSPeter Dunlap * are provided as input. 1745a6d42e7dSPeter Dunlap * 1746a6d42e7dSPeter Dunlap */ 1747a6d42e7dSPeter Dunlap void 1748a6d42e7dSPeter Dunlap idm_pdu_tx(idm_pdu_t *pdu) 1749a6d42e7dSPeter Dunlap { 1750a6d42e7dSPeter Dunlap idm_conn_t *ic = pdu->isp_ic; 1751a6d42e7dSPeter Dunlap iscsi_async_evt_hdr_t *async_evt; 1752a6d42e7dSPeter Dunlap 1753a6d42e7dSPeter Dunlap /* 1754a6d42e7dSPeter Dunlap * If we are in full-featured mode then route SCSI-related 1755a6d42e7dSPeter Dunlap * commands to the appropriate function vector without checking 1756a6d42e7dSPeter Dunlap * the connection state. We will only be in full-feature mode 1757a6d42e7dSPeter Dunlap * when we are in an acceptable state for SCSI PDU's. 1758a6d42e7dSPeter Dunlap * 1759a6d42e7dSPeter Dunlap * We also need to ensure that there are no PDU events outstanding 1760a6d42e7dSPeter Dunlap * on the state machine. Any non-SCSI PDU's received in full-feature 1761a6d42e7dSPeter Dunlap * mode will result in PDU events and until these have been handled 1762a6d42e7dSPeter Dunlap * we need to route all PDU's through the state machine as PDU 1763a6d42e7dSPeter Dunlap * events to maintain ordering. 1764a6d42e7dSPeter Dunlap * 1765a6d42e7dSPeter Dunlap * Note that IDM cannot enter FFP mode until it processes in 1766a6d42e7dSPeter Dunlap * its state machine the last xmit of the login process. 1767a6d42e7dSPeter Dunlap * Hence, checking the IDM_PDU_LOGIN_TX flag here would be 1768a6d42e7dSPeter Dunlap * superfluous. 1769a6d42e7dSPeter Dunlap */ 1770a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 1771a6d42e7dSPeter Dunlap if (ic->ic_ffp && (ic->ic_pdu_events == 0)) { 1772a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 1773a6d42e7dSPeter Dunlap switch (IDM_PDU_OPCODE(pdu)) { 1774a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_RSP: 1775a6d42e7dSPeter Dunlap /* Target only */ 1776a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1777a6d42e7dSPeter Dunlap return; 1778a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_TASK_MGT_RSP: 1779a6d42e7dSPeter Dunlap /* Target only */ 1780a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1781a6d42e7dSPeter Dunlap return; 1782a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_DATA_RSP: 1783a6d42e7dSPeter Dunlap /* Target only */ 1784a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1785a6d42e7dSPeter Dunlap return; 1786a6d42e7dSPeter Dunlap case ISCSI_OP_RTT_RSP: 1787a6d42e7dSPeter Dunlap /* Target only */ 1788a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1789a6d42e7dSPeter Dunlap return; 1790a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_IN: 1791a6d42e7dSPeter Dunlap /* Target only */ 1792a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1793a6d42e7dSPeter Dunlap return; 1794a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_RSP: 1795a6d42e7dSPeter Dunlap /* Target only */ 1796a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1797a6d42e7dSPeter Dunlap return; 1798a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_CMD: 1799a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_OUT: 1800a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_CMD: 1801a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_DATA: 1802a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_TASK_MGT_MSG: 1803a6d42e7dSPeter Dunlap /* Initiator only */ 1804a6d42e7dSPeter Dunlap idm_pdu_tx_forward(ic, pdu); 1805a6d42e7dSPeter Dunlap return; 1806a6d42e7dSPeter Dunlap default: 1807a6d42e7dSPeter Dunlap break; 1808a6d42e7dSPeter Dunlap } 1809a6d42e7dSPeter Dunlap 1810a6d42e7dSPeter Dunlap mutex_enter(&ic->ic_state_mutex); 1811a6d42e7dSPeter Dunlap } 1812a6d42e7dSPeter Dunlap 1813a6d42e7dSPeter Dunlap /* 1814a6d42e7dSPeter Dunlap * Any PDU's processed outside of full-feature mode and non-SCSI 1815a6d42e7dSPeter Dunlap * PDU's in full-feature mode are handled by generating an 1816a6d42e7dSPeter Dunlap * event to the connection state machine. The state machine 1817a6d42e7dSPeter Dunlap * will validate the PDU against the current state and either 1818a6d42e7dSPeter Dunlap * transmit the PDU if the opcode is allowed or handle an 1819a6d42e7dSPeter Dunlap * error if the PDU is not allowed. 1820a6d42e7dSPeter Dunlap * 1821a6d42e7dSPeter Dunlap * This code-path will also generate any events that are implied 1822a6d42e7dSPeter Dunlap * by the PDU opcode. For example a "login response" with success 1823a6d42e7dSPeter Dunlap * status generates a CE_LOGOUT_SUCCESS_SND event. 1824a6d42e7dSPeter Dunlap */ 1825a6d42e7dSPeter Dunlap switch (IDM_PDU_OPCODE(pdu)) { 1826a6d42e7dSPeter Dunlap case ISCSI_OP_LOGIN_CMD: 1827a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_LOGIN_SND, (uintptr_t)pdu); 1828a6d42e7dSPeter Dunlap break; 1829a6d42e7dSPeter Dunlap case ISCSI_OP_LOGIN_RSP: 1830a6d42e7dSPeter Dunlap idm_parse_login_rsp(ic, pdu, /* Is RX */ B_FALSE); 1831a6d42e7dSPeter Dunlap break; 1832a6d42e7dSPeter Dunlap case ISCSI_OP_LOGOUT_CMD: 1833a6d42e7dSPeter Dunlap idm_parse_logout_req(ic, pdu, /* Is RX */ B_FALSE); 1834a6d42e7dSPeter Dunlap break; 1835a6d42e7dSPeter Dunlap case ISCSI_OP_LOGOUT_RSP: 1836a6d42e7dSPeter Dunlap idm_parse_logout_rsp(ic, pdu, /* Is RX */ B_FALSE); 1837a6d42e7dSPeter Dunlap break; 1838a6d42e7dSPeter Dunlap case ISCSI_OP_ASYNC_EVENT: 1839a6d42e7dSPeter Dunlap async_evt = (iscsi_async_evt_hdr_t *)pdu->isp_hdr; 1840a6d42e7dSPeter Dunlap switch (async_evt->async_event) { 1841a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_REQUEST_LOGOUT: 1842a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_ASYNC_LOGOUT_SND, 1843a6d42e7dSPeter Dunlap (uintptr_t)pdu); 1844a6d42e7dSPeter Dunlap break; 1845a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_DROPPING_CONNECTION: 1846a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_ASYNC_DROP_CONN_SND, 1847a6d42e7dSPeter Dunlap (uintptr_t)pdu); 1848a6d42e7dSPeter Dunlap break; 1849a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_DROPPING_ALL_CONNECTIONS: 1850a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_ASYNC_DROP_ALL_CONN_SND, 1851a6d42e7dSPeter Dunlap (uintptr_t)pdu); 1852a6d42e7dSPeter Dunlap break; 1853a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_SCSI_EVENT: 1854a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_PARAM_NEGOTIATION: 1855a6d42e7dSPeter Dunlap default: 1856a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, 1857a6d42e7dSPeter Dunlap (uintptr_t)pdu); 1858a6d42e7dSPeter Dunlap break; 1859a6d42e7dSPeter Dunlap } 1860a6d42e7dSPeter Dunlap break; 1861a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_RSP: 1862a6d42e7dSPeter Dunlap /* Target only */ 1863a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1864a6d42e7dSPeter Dunlap break; 1865a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_TASK_MGT_RSP: 1866a6d42e7dSPeter Dunlap /* Target only */ 1867a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1868a6d42e7dSPeter Dunlap break; 1869a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_DATA_RSP: 1870a6d42e7dSPeter Dunlap /* Target only */ 1871a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1872a6d42e7dSPeter Dunlap break; 1873a6d42e7dSPeter Dunlap case ISCSI_OP_RTT_RSP: 1874a6d42e7dSPeter Dunlap /* Target only */ 1875a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1876a6d42e7dSPeter Dunlap break; 1877a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_IN: 1878a6d42e7dSPeter Dunlap /* Target only */ 1879a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1880a6d42e7dSPeter Dunlap break; 1881a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_RSP: 1882a6d42e7dSPeter Dunlap /* Target only */ 1883a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1884a6d42e7dSPeter Dunlap break; 1885a6d42e7dSPeter Dunlap /* Initiator only */ 1886a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_CMD: 1887a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_TASK_MGT_MSG: 1888a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_DATA: 1889a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_OUT: 1890a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_CMD: 1891a6d42e7dSPeter Dunlap case ISCSI_OP_SNACK_CMD: 1892a6d42e7dSPeter Dunlap case ISCSI_OP_REJECT_MSG: 1893a6d42e7dSPeter Dunlap default: 1894a6d42e7dSPeter Dunlap /* 1895a6d42e7dSPeter Dunlap * Connection state machine will validate these PDU's against 1896a6d42e7dSPeter Dunlap * the current state. A PDU not allowed in the current 1897a6d42e7dSPeter Dunlap * state will cause a protocol error. 1898a6d42e7dSPeter Dunlap */ 1899a6d42e7dSPeter Dunlap idm_conn_tx_pdu_event(ic, CE_MISC_TX, (uintptr_t)pdu); 1900a6d42e7dSPeter Dunlap break; 1901a6d42e7dSPeter Dunlap } 1902a6d42e7dSPeter Dunlap mutex_exit(&ic->ic_state_mutex); 1903a6d42e7dSPeter Dunlap } 1904a6d42e7dSPeter Dunlap 1905a6d42e7dSPeter Dunlap /* 190630e7468fSPeter Dunlap * Common allocation of a PDU along with memory for header and data. 1907a6d42e7dSPeter Dunlap */ 190830e7468fSPeter Dunlap static idm_pdu_t * 190930e7468fSPeter Dunlap idm_pdu_alloc_common(uint_t hdrlen, uint_t datalen, int sleepflag) 1910a6d42e7dSPeter Dunlap { 1911a6d42e7dSPeter Dunlap idm_pdu_t *result; 1912a6d42e7dSPeter Dunlap 1913a6d42e7dSPeter Dunlap /* 1914a6d42e7dSPeter Dunlap * IDM clients should cache these structures for performance 1915a6d42e7dSPeter Dunlap * critical paths. We can't cache effectively in IDM because we 1916a6d42e7dSPeter Dunlap * don't know the correct header and data size. 1917a6d42e7dSPeter Dunlap * 1918a6d42e7dSPeter Dunlap * Valid header length is assumed to be hdrlen and valid data 1919a6d42e7dSPeter Dunlap * length is assumed to be datalen. isp_hdrlen and isp_datalen 1920a6d42e7dSPeter Dunlap * can be adjusted after the PDU is returned if necessary. 1921a6d42e7dSPeter Dunlap */ 192230e7468fSPeter Dunlap result = kmem_zalloc(sizeof (idm_pdu_t) + hdrlen + datalen, sleepflag); 192330e7468fSPeter Dunlap if (result != NULL) { 192430e7468fSPeter Dunlap /* For idm_pdu_free sanity check */ 192530e7468fSPeter Dunlap result->isp_flags |= IDM_PDU_ALLOC; 192630e7468fSPeter Dunlap /* pointer arithmetic */ 192730e7468fSPeter Dunlap result->isp_hdr = (iscsi_hdr_t *)(result + 1); 192830e7468fSPeter Dunlap result->isp_hdrlen = hdrlen; 192930e7468fSPeter Dunlap result->isp_hdrbuflen = hdrlen; 193030e7468fSPeter Dunlap result->isp_transport_hdrlen = 0; 1931*4142b486SJames Moore if (datalen != 0) 1932*4142b486SJames Moore result->isp_data = (uint8_t *)result->isp_hdr + hdrlen; 193330e7468fSPeter Dunlap result->isp_datalen = datalen; 193430e7468fSPeter Dunlap result->isp_databuflen = datalen; 193530e7468fSPeter Dunlap result->isp_magic = IDM_PDU_MAGIC; 193630e7468fSPeter Dunlap } 1937a6d42e7dSPeter Dunlap 1938a6d42e7dSPeter Dunlap return (result); 1939a6d42e7dSPeter Dunlap } 1940a6d42e7dSPeter Dunlap 194130e7468fSPeter Dunlap /* 194230e7468fSPeter Dunlap * Typical idm_pdu_alloc invocation, will block for resources. 194330e7468fSPeter Dunlap */ 194430e7468fSPeter Dunlap idm_pdu_t * 194530e7468fSPeter Dunlap idm_pdu_alloc(uint_t hdrlen, uint_t datalen) 194630e7468fSPeter Dunlap { 194730e7468fSPeter Dunlap return (idm_pdu_alloc_common(hdrlen, datalen, KM_SLEEP)); 194830e7468fSPeter Dunlap } 194930e7468fSPeter Dunlap 195030e7468fSPeter Dunlap /* 195130e7468fSPeter Dunlap * Non-blocking idm_pdu_alloc implementation, returns NULL if resources 195230e7468fSPeter Dunlap * are not available. Needed for transport-layer allocations which may 195330e7468fSPeter Dunlap * be invoking in interrupt context. 195430e7468fSPeter Dunlap */ 195530e7468fSPeter Dunlap idm_pdu_t * 195630e7468fSPeter Dunlap idm_pdu_alloc_nosleep(uint_t hdrlen, uint_t datalen) 195730e7468fSPeter Dunlap { 195830e7468fSPeter Dunlap return (idm_pdu_alloc_common(hdrlen, datalen, KM_NOSLEEP)); 195930e7468fSPeter Dunlap } 196030e7468fSPeter Dunlap 1961a6d42e7dSPeter Dunlap /* 1962a6d42e7dSPeter Dunlap * Free a PDU previously allocated with idm_pdu_alloc() including any 1963a6d42e7dSPeter Dunlap * header and data space allocated as part of the original request. 1964a6d42e7dSPeter Dunlap * Additional memory regions referenced by subsequent modification of 1965a6d42e7dSPeter Dunlap * the isp_hdr and/or isp_data fields will not be freed. 1966a6d42e7dSPeter Dunlap */ 1967a6d42e7dSPeter Dunlap void 1968a6d42e7dSPeter Dunlap idm_pdu_free(idm_pdu_t *pdu) 1969a6d42e7dSPeter Dunlap { 1970a6d42e7dSPeter Dunlap /* Make sure the structure was allocated using idm_pdu_alloc() */ 1971a6d42e7dSPeter Dunlap ASSERT(pdu->isp_flags & IDM_PDU_ALLOC); 1972a6d42e7dSPeter Dunlap kmem_free(pdu, 1973a6d42e7dSPeter Dunlap sizeof (idm_pdu_t) + pdu->isp_hdrbuflen + pdu->isp_databuflen); 1974a6d42e7dSPeter Dunlap } 1975a6d42e7dSPeter Dunlap 1976a6d42e7dSPeter Dunlap /* 1977a6d42e7dSPeter Dunlap * Initialize the connection, private and callback fields in a PDU. 1978a6d42e7dSPeter Dunlap */ 1979a6d42e7dSPeter Dunlap void 1980a6d42e7dSPeter Dunlap idm_pdu_init(idm_pdu_t *pdu, idm_conn_t *ic, void *private, idm_pdu_cb_t *cb) 1981a6d42e7dSPeter Dunlap { 1982a6d42e7dSPeter Dunlap /* 1983a6d42e7dSPeter Dunlap * idm_pdu_complete() will call idm_pdu_free if the callback is 1984a6d42e7dSPeter Dunlap * NULL. This will only work if the PDU was originally allocated 1985a6d42e7dSPeter Dunlap * with idm_pdu_alloc(). 1986a6d42e7dSPeter Dunlap */ 1987a6d42e7dSPeter Dunlap ASSERT((pdu->isp_flags & IDM_PDU_ALLOC) || 1988a6d42e7dSPeter Dunlap (cb != NULL)); 1989a6d42e7dSPeter Dunlap pdu->isp_magic = IDM_PDU_MAGIC; 1990a6d42e7dSPeter Dunlap pdu->isp_ic = ic; 1991a6d42e7dSPeter Dunlap pdu->isp_private = private; 1992a6d42e7dSPeter Dunlap pdu->isp_callback = cb; 1993a6d42e7dSPeter Dunlap } 1994a6d42e7dSPeter Dunlap 1995a6d42e7dSPeter Dunlap /* 1996a6d42e7dSPeter Dunlap * Initialize the header and header length field. This function should 1997a6d42e7dSPeter Dunlap * not be used to adjust the header length in a buffer allocated via 1998a6d42e7dSPeter Dunlap * pdu_pdu_alloc since it overwrites the existing header pointer. 1999a6d42e7dSPeter Dunlap */ 2000a6d42e7dSPeter Dunlap void 2001a6d42e7dSPeter Dunlap idm_pdu_init_hdr(idm_pdu_t *pdu, uint8_t *hdr, uint_t hdrlen) 2002a6d42e7dSPeter Dunlap { 2003a6d42e7dSPeter Dunlap pdu->isp_hdr = (iscsi_hdr_t *)((void *)hdr); 2004a6d42e7dSPeter Dunlap pdu->isp_hdrlen = hdrlen; 2005a6d42e7dSPeter Dunlap } 2006a6d42e7dSPeter Dunlap 2007a6d42e7dSPeter Dunlap /* 2008a6d42e7dSPeter Dunlap * Initialize the data and data length fields. This function should 2009a6d42e7dSPeter Dunlap * not be used to adjust the data length of a buffer allocated via 2010a6d42e7dSPeter Dunlap * idm_pdu_alloc since it overwrites the existing data pointer. 2011a6d42e7dSPeter Dunlap */ 2012a6d42e7dSPeter Dunlap void 2013a6d42e7dSPeter Dunlap idm_pdu_init_data(idm_pdu_t *pdu, uint8_t *data, uint_t datalen) 2014a6d42e7dSPeter Dunlap { 2015a6d42e7dSPeter Dunlap pdu->isp_data = data; 2016a6d42e7dSPeter Dunlap pdu->isp_datalen = datalen; 2017a6d42e7dSPeter Dunlap } 2018a6d42e7dSPeter Dunlap 2019a6d42e7dSPeter Dunlap void 2020a6d42e7dSPeter Dunlap idm_pdu_complete(idm_pdu_t *pdu, idm_status_t status) 2021a6d42e7dSPeter Dunlap { 2022a6d42e7dSPeter Dunlap if (pdu->isp_callback) { 2023a6d42e7dSPeter Dunlap pdu->isp_status = status; 2024a6d42e7dSPeter Dunlap (*pdu->isp_callback)(pdu, status); 2025a6d42e7dSPeter Dunlap } else { 2026a6d42e7dSPeter Dunlap idm_pdu_free(pdu); 2027a6d42e7dSPeter Dunlap } 2028a6d42e7dSPeter Dunlap } 2029a6d42e7dSPeter Dunlap 2030a6d42e7dSPeter Dunlap /* 2031a6d42e7dSPeter Dunlap * State machine auditing 2032a6d42e7dSPeter Dunlap */ 2033a6d42e7dSPeter Dunlap 2034a6d42e7dSPeter Dunlap void 2035a6d42e7dSPeter Dunlap idm_sm_audit_init(sm_audit_buf_t *audit_buf) 2036a6d42e7dSPeter Dunlap { 2037a6d42e7dSPeter Dunlap bzero(audit_buf, sizeof (sm_audit_buf_t)); 2038a6d42e7dSPeter Dunlap audit_buf->sab_max_index = SM_AUDIT_BUF_MAX_REC - 1; 2039a6d42e7dSPeter Dunlap } 2040a6d42e7dSPeter Dunlap 2041a6d42e7dSPeter Dunlap static 2042a6d42e7dSPeter Dunlap sm_audit_record_t * 2043a6d42e7dSPeter Dunlap idm_sm_audit_common(sm_audit_buf_t *audit_buf, sm_audit_record_type_t r_type, 2044a6d42e7dSPeter Dunlap sm_audit_sm_type_t sm_type, 2045a6d42e7dSPeter Dunlap int current_state) 2046a6d42e7dSPeter Dunlap { 2047a6d42e7dSPeter Dunlap sm_audit_record_t *sar; 2048a6d42e7dSPeter Dunlap 2049a6d42e7dSPeter Dunlap sar = audit_buf->sab_records; 2050a6d42e7dSPeter Dunlap sar += audit_buf->sab_index; 2051a6d42e7dSPeter Dunlap audit_buf->sab_index++; 2052a6d42e7dSPeter Dunlap audit_buf->sab_index &= audit_buf->sab_max_index; 2053a6d42e7dSPeter Dunlap 2054a6d42e7dSPeter Dunlap sar->sar_type = r_type; 2055a6d42e7dSPeter Dunlap gethrestime(&sar->sar_timestamp); 2056a6d42e7dSPeter Dunlap sar->sar_sm_type = sm_type; 2057a6d42e7dSPeter Dunlap sar->sar_state = current_state; 2058a6d42e7dSPeter Dunlap 2059a6d42e7dSPeter Dunlap return (sar); 2060a6d42e7dSPeter Dunlap } 2061a6d42e7dSPeter Dunlap 2062a6d42e7dSPeter Dunlap void 2063a6d42e7dSPeter Dunlap idm_sm_audit_event(sm_audit_buf_t *audit_buf, 2064a6d42e7dSPeter Dunlap sm_audit_sm_type_t sm_type, int current_state, 2065a6d42e7dSPeter Dunlap int event, uintptr_t event_info) 2066a6d42e7dSPeter Dunlap { 2067a6d42e7dSPeter Dunlap sm_audit_record_t *sar; 2068a6d42e7dSPeter Dunlap 2069a6d42e7dSPeter Dunlap sar = idm_sm_audit_common(audit_buf, SAR_STATE_EVENT, 2070a6d42e7dSPeter Dunlap sm_type, current_state); 2071a6d42e7dSPeter Dunlap sar->sar_event = event; 2072a6d42e7dSPeter Dunlap sar->sar_event_info = event_info; 2073a6d42e7dSPeter Dunlap } 2074a6d42e7dSPeter Dunlap 2075a6d42e7dSPeter Dunlap void 2076a6d42e7dSPeter Dunlap idm_sm_audit_state_change(sm_audit_buf_t *audit_buf, 2077a6d42e7dSPeter Dunlap sm_audit_sm_type_t sm_type, int current_state, int new_state) 2078a6d42e7dSPeter Dunlap { 2079a6d42e7dSPeter Dunlap sm_audit_record_t *sar; 2080a6d42e7dSPeter Dunlap 2081a6d42e7dSPeter Dunlap sar = idm_sm_audit_common(audit_buf, SAR_STATE_CHANGE, 2082a6d42e7dSPeter Dunlap sm_type, current_state); 2083a6d42e7dSPeter Dunlap sar->sar_new_state = new_state; 2084a6d42e7dSPeter Dunlap } 2085a6d42e7dSPeter Dunlap 2086a6d42e7dSPeter Dunlap 2087a6d42e7dSPeter Dunlap /* 2088a6d42e7dSPeter Dunlap * Object reference tracking 2089a6d42e7dSPeter Dunlap */ 2090a6d42e7dSPeter Dunlap 2091a6d42e7dSPeter Dunlap void 2092a6d42e7dSPeter Dunlap idm_refcnt_init(idm_refcnt_t *refcnt, void *referenced_obj) 2093a6d42e7dSPeter Dunlap { 2094a6d42e7dSPeter Dunlap bzero(refcnt, sizeof (*refcnt)); 2095a6d42e7dSPeter Dunlap idm_refcnt_reset(refcnt); 2096a6d42e7dSPeter Dunlap refcnt->ir_referenced_obj = referenced_obj; 2097a6d42e7dSPeter Dunlap bzero(&refcnt->ir_audit_buf, sizeof (refcnt_audit_buf_t)); 2098a6d42e7dSPeter Dunlap refcnt->ir_audit_buf.anb_max_index = REFCNT_AUDIT_BUF_MAX_REC - 1; 2099a6d42e7dSPeter Dunlap mutex_init(&refcnt->ir_mutex, NULL, MUTEX_DEFAULT, NULL); 2100a6d42e7dSPeter Dunlap cv_init(&refcnt->ir_cv, NULL, CV_DEFAULT, NULL); 2101a6d42e7dSPeter Dunlap } 2102a6d42e7dSPeter Dunlap 2103a6d42e7dSPeter Dunlap void 2104a6d42e7dSPeter Dunlap idm_refcnt_destroy(idm_refcnt_t *refcnt) 2105a6d42e7dSPeter Dunlap { 210672cf3143Speter dunlap /* 210772cf3143Speter dunlap * Grab the mutex to there are no other lingering threads holding 210872cf3143Speter dunlap * the mutex before we destroy it (e.g. idm_refcnt_rele just after 210972cf3143Speter dunlap * the refcnt goes to zero if ir_waiting == REF_WAIT_ASYNC) 211072cf3143Speter dunlap */ 211172cf3143Speter dunlap mutex_enter(&refcnt->ir_mutex); 2112a6d42e7dSPeter Dunlap ASSERT(refcnt->ir_refcnt == 0); 2113a6d42e7dSPeter Dunlap cv_destroy(&refcnt->ir_cv); 2114a6d42e7dSPeter Dunlap mutex_destroy(&refcnt->ir_mutex); 2115a6d42e7dSPeter Dunlap } 2116a6d42e7dSPeter Dunlap 2117a6d42e7dSPeter Dunlap void 2118a6d42e7dSPeter Dunlap idm_refcnt_reset(idm_refcnt_t *refcnt) 2119a6d42e7dSPeter Dunlap { 2120a6d42e7dSPeter Dunlap refcnt->ir_waiting = REF_NOWAIT; 2121a6d42e7dSPeter Dunlap refcnt->ir_refcnt = 0; 2122a6d42e7dSPeter Dunlap } 2123a6d42e7dSPeter Dunlap 2124a6d42e7dSPeter Dunlap void 2125a6d42e7dSPeter Dunlap idm_refcnt_hold(idm_refcnt_t *refcnt) 2126a6d42e7dSPeter Dunlap { 2127a6d42e7dSPeter Dunlap /* 2128a6d42e7dSPeter Dunlap * Nothing should take a hold on an object after a call to 2129a6d42e7dSPeter Dunlap * idm_refcnt_wait_ref or idm_refcnd_async_wait_ref 2130a6d42e7dSPeter Dunlap */ 2131a6d42e7dSPeter Dunlap ASSERT(refcnt->ir_waiting == REF_NOWAIT); 2132a6d42e7dSPeter Dunlap 2133a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2134a6d42e7dSPeter Dunlap refcnt->ir_refcnt++; 2135a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2136a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2137a6d42e7dSPeter Dunlap } 2138a6d42e7dSPeter Dunlap 2139a6d42e7dSPeter Dunlap static void 2140a6d42e7dSPeter Dunlap idm_refcnt_unref_task(void *refcnt_void) 2141a6d42e7dSPeter Dunlap { 2142a6d42e7dSPeter Dunlap idm_refcnt_t *refcnt = refcnt_void; 2143a6d42e7dSPeter Dunlap 2144a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2145a6d42e7dSPeter Dunlap (*refcnt->ir_cb)(refcnt->ir_referenced_obj); 2146a6d42e7dSPeter Dunlap } 2147a6d42e7dSPeter Dunlap 2148a6d42e7dSPeter Dunlap void 2149a6d42e7dSPeter Dunlap idm_refcnt_rele(idm_refcnt_t *refcnt) 2150a6d42e7dSPeter Dunlap { 2151a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2152a6d42e7dSPeter Dunlap ASSERT(refcnt->ir_refcnt > 0); 2153a6d42e7dSPeter Dunlap refcnt->ir_refcnt--; 2154a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2155a6d42e7dSPeter Dunlap if (refcnt->ir_waiting == REF_NOWAIT) { 2156a6d42e7dSPeter Dunlap /* No one is waiting on this object */ 2157a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2158a6d42e7dSPeter Dunlap return; 2159a6d42e7dSPeter Dunlap } 2160a6d42e7dSPeter Dunlap 2161a6d42e7dSPeter Dunlap /* 2162a6d42e7dSPeter Dunlap * Someone is waiting for this object to go idle so check if 2163a6d42e7dSPeter Dunlap * refcnt is 0. Waiting on an object then later grabbing another 2164a6d42e7dSPeter Dunlap * reference is not allowed so we don't need to handle that case. 2165a6d42e7dSPeter Dunlap */ 2166a6d42e7dSPeter Dunlap if (refcnt->ir_refcnt == 0) { 2167a6d42e7dSPeter Dunlap if (refcnt->ir_waiting == REF_WAIT_ASYNC) { 2168a6d42e7dSPeter Dunlap if (taskq_dispatch(idm.idm_global_taskq, 2169a6d42e7dSPeter Dunlap &idm_refcnt_unref_task, refcnt, TQ_SLEEP) == NULL) { 2170a6d42e7dSPeter Dunlap cmn_err(CE_WARN, 2171a6d42e7dSPeter Dunlap "idm_refcnt_rele: Couldn't dispatch task"); 2172a6d42e7dSPeter Dunlap } 2173a6d42e7dSPeter Dunlap } else if (refcnt->ir_waiting == REF_WAIT_SYNC) { 2174a6d42e7dSPeter Dunlap cv_signal(&refcnt->ir_cv); 2175a6d42e7dSPeter Dunlap } 2176a6d42e7dSPeter Dunlap } 2177a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2178a6d42e7dSPeter Dunlap } 2179a6d42e7dSPeter Dunlap 2180a6d42e7dSPeter Dunlap void 2181a6d42e7dSPeter Dunlap idm_refcnt_rele_and_destroy(idm_refcnt_t *refcnt, idm_refcnt_cb_t *cb_func) 2182a6d42e7dSPeter Dunlap { 2183a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2184a6d42e7dSPeter Dunlap ASSERT(refcnt->ir_refcnt > 0); 2185a6d42e7dSPeter Dunlap refcnt->ir_refcnt--; 2186a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2187a6d42e7dSPeter Dunlap 2188a6d42e7dSPeter Dunlap /* 2189a6d42e7dSPeter Dunlap * Someone is waiting for this object to go idle so check if 2190a6d42e7dSPeter Dunlap * refcnt is 0. Waiting on an object then later grabbing another 2191a6d42e7dSPeter Dunlap * reference is not allowed so we don't need to handle that case. 2192a6d42e7dSPeter Dunlap */ 2193a6d42e7dSPeter Dunlap if (refcnt->ir_refcnt == 0) { 2194a6d42e7dSPeter Dunlap refcnt->ir_cb = cb_func; 2195a6d42e7dSPeter Dunlap refcnt->ir_waiting = REF_WAIT_ASYNC; 2196a6d42e7dSPeter Dunlap if (taskq_dispatch(idm.idm_global_taskq, 2197a6d42e7dSPeter Dunlap &idm_refcnt_unref_task, refcnt, TQ_SLEEP) == NULL) { 2198a6d42e7dSPeter Dunlap cmn_err(CE_WARN, 2199a6d42e7dSPeter Dunlap "idm_refcnt_rele: Couldn't dispatch task"); 2200a6d42e7dSPeter Dunlap } 2201a6d42e7dSPeter Dunlap } 2202a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2203a6d42e7dSPeter Dunlap } 2204a6d42e7dSPeter Dunlap 2205a6d42e7dSPeter Dunlap void 2206a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(idm_refcnt_t *refcnt) 2207a6d42e7dSPeter Dunlap { 2208a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2209a6d42e7dSPeter Dunlap refcnt->ir_waiting = REF_WAIT_SYNC; 2210a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2211a6d42e7dSPeter Dunlap while (refcnt->ir_refcnt != 0) 2212a6d42e7dSPeter Dunlap cv_wait(&refcnt->ir_cv, &refcnt->ir_mutex); 2213a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2214a6d42e7dSPeter Dunlap } 2215a6d42e7dSPeter Dunlap 2216a6d42e7dSPeter Dunlap void 2217a6d42e7dSPeter Dunlap idm_refcnt_async_wait_ref(idm_refcnt_t *refcnt, idm_refcnt_cb_t *cb_func) 2218a6d42e7dSPeter Dunlap { 2219a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2220a6d42e7dSPeter Dunlap refcnt->ir_waiting = REF_WAIT_ASYNC; 2221a6d42e7dSPeter Dunlap refcnt->ir_cb = cb_func; 2222a6d42e7dSPeter Dunlap REFCNT_AUDIT(refcnt); 2223a6d42e7dSPeter Dunlap /* 2224a6d42e7dSPeter Dunlap * It's possible we don't have any references. To make things easier 2225a6d42e7dSPeter Dunlap * on the caller use a taskq to call the callback instead of 2226a6d42e7dSPeter Dunlap * calling it synchronously 2227a6d42e7dSPeter Dunlap */ 2228a6d42e7dSPeter Dunlap if (refcnt->ir_refcnt == 0) { 2229a6d42e7dSPeter Dunlap if (taskq_dispatch(idm.idm_global_taskq, 2230a6d42e7dSPeter Dunlap &idm_refcnt_unref_task, refcnt, TQ_SLEEP) == NULL) { 2231a6d42e7dSPeter Dunlap cmn_err(CE_WARN, 2232a6d42e7dSPeter Dunlap "idm_refcnt_async_wait_ref: " 2233a6d42e7dSPeter Dunlap "Couldn't dispatch task"); 2234a6d42e7dSPeter Dunlap } 2235a6d42e7dSPeter Dunlap } 2236a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2237a6d42e7dSPeter Dunlap } 2238a6d42e7dSPeter Dunlap 2239a6d42e7dSPeter Dunlap void 2240a6d42e7dSPeter Dunlap idm_refcnt_destroy_unref_obj(idm_refcnt_t *refcnt, 2241a6d42e7dSPeter Dunlap idm_refcnt_cb_t *cb_func) 2242a6d42e7dSPeter Dunlap { 2243a6d42e7dSPeter Dunlap mutex_enter(&refcnt->ir_mutex); 2244a6d42e7dSPeter Dunlap if (refcnt->ir_refcnt == 0) { 2245a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2246a6d42e7dSPeter Dunlap (*cb_func)(refcnt->ir_referenced_obj); 2247a6d42e7dSPeter Dunlap return; 2248a6d42e7dSPeter Dunlap } 2249a6d42e7dSPeter Dunlap mutex_exit(&refcnt->ir_mutex); 2250a6d42e7dSPeter Dunlap } 2251a6d42e7dSPeter Dunlap 2252a6d42e7dSPeter Dunlap void 2253a6d42e7dSPeter Dunlap idm_conn_hold(idm_conn_t *ic) 2254a6d42e7dSPeter Dunlap { 2255a6d42e7dSPeter Dunlap idm_refcnt_hold(&ic->ic_refcnt); 2256a6d42e7dSPeter Dunlap } 2257a6d42e7dSPeter Dunlap 2258a6d42e7dSPeter Dunlap void 2259a6d42e7dSPeter Dunlap idm_conn_rele(idm_conn_t *ic) 2260a6d42e7dSPeter Dunlap { 2261a6d42e7dSPeter Dunlap idm_refcnt_rele(&ic->ic_refcnt); 2262a6d42e7dSPeter Dunlap } 2263a6d42e7dSPeter Dunlap 2264a6d42e7dSPeter Dunlap 2265a6d42e7dSPeter Dunlap static int 2266a6d42e7dSPeter Dunlap _idm_init(void) 2267a6d42e7dSPeter Dunlap { 2268a6d42e7dSPeter Dunlap /* Initialize the rwlock for the taskid table */ 2269a6d42e7dSPeter Dunlap rw_init(&idm.idm_taskid_table_lock, NULL, RW_DRIVER, NULL); 2270a6d42e7dSPeter Dunlap 2271a6d42e7dSPeter Dunlap /* Initialize the global mutex and taskq */ 2272a6d42e7dSPeter Dunlap mutex_init(&idm.idm_global_mutex, NULL, MUTEX_DEFAULT, NULL); 2273a6d42e7dSPeter Dunlap 2274a6d42e7dSPeter Dunlap cv_init(&idm.idm_tgt_svc_cv, NULL, CV_DEFAULT, NULL); 2275a6d42e7dSPeter Dunlap cv_init(&idm.idm_wd_cv, NULL, CV_DEFAULT, NULL); 2276a6d42e7dSPeter Dunlap 227730e7468fSPeter Dunlap /* 227830e7468fSPeter Dunlap * The maximum allocation needs to be high here since there can be 227930e7468fSPeter Dunlap * many concurrent tasks using the global taskq. 228030e7468fSPeter Dunlap */ 2281a6d42e7dSPeter Dunlap idm.idm_global_taskq = taskq_create("idm_global_taskq", 1, minclsyspri, 228230e7468fSPeter Dunlap 128, 16384, TASKQ_PREPOPULATE); 2283a6d42e7dSPeter Dunlap if (idm.idm_global_taskq == NULL) { 2284a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_wd_cv); 2285a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_tgt_svc_cv); 2286a6d42e7dSPeter Dunlap mutex_destroy(&idm.idm_global_mutex); 2287a6d42e7dSPeter Dunlap rw_destroy(&idm.idm_taskid_table_lock); 2288a6d42e7dSPeter Dunlap return (ENOMEM); 2289a6d42e7dSPeter Dunlap } 2290a6d42e7dSPeter Dunlap 2291a41f9819SJames Moore /* Start watchdog thread */ 2292a6d42e7dSPeter Dunlap idm.idm_wd_thread = thread_create(NULL, 0, 2293a6d42e7dSPeter Dunlap idm_wd_thread, NULL, 0, &p0, TS_RUN, minclsyspri); 2294a6d42e7dSPeter Dunlap if (idm.idm_wd_thread == NULL) { 2295a6d42e7dSPeter Dunlap /* Couldn't create the watchdog thread */ 2296a6d42e7dSPeter Dunlap taskq_destroy(idm.idm_global_taskq); 2297a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_wd_cv); 2298a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_tgt_svc_cv); 2299a6d42e7dSPeter Dunlap mutex_destroy(&idm.idm_global_mutex); 2300a6d42e7dSPeter Dunlap rw_destroy(&idm.idm_taskid_table_lock); 2301a6d42e7dSPeter Dunlap return (ENOMEM); 2302a6d42e7dSPeter Dunlap } 2303a6d42e7dSPeter Dunlap 2304a41f9819SJames Moore /* Pause until the watchdog thread is running */ 2305a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 2306a6d42e7dSPeter Dunlap while (!idm.idm_wd_thread_running) 2307a6d42e7dSPeter Dunlap cv_wait(&idm.idm_wd_cv, &idm.idm_global_mutex); 2308a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 2309a6d42e7dSPeter Dunlap 2310a6d42e7dSPeter Dunlap /* 2311a6d42e7dSPeter Dunlap * Allocate the task ID table and set "next" to 0. 2312a6d42e7dSPeter Dunlap */ 2313a6d42e7dSPeter Dunlap 2314a6d42e7dSPeter Dunlap idm.idm_taskid_max = idm_max_taskids; 2315a6d42e7dSPeter Dunlap idm.idm_taskid_table = (idm_task_t **) 2316a6d42e7dSPeter Dunlap kmem_zalloc(idm.idm_taskid_max * sizeof (idm_task_t *), KM_SLEEP); 2317a6d42e7dSPeter Dunlap idm.idm_taskid_next = 0; 2318a6d42e7dSPeter Dunlap 2319a6d42e7dSPeter Dunlap /* Create the global buffer and task kmem caches */ 2320a6d42e7dSPeter Dunlap idm.idm_buf_cache = kmem_cache_create("idm_buf_cache", 2321a6d42e7dSPeter Dunlap sizeof (idm_buf_t), 8, NULL, NULL, NULL, NULL, NULL, KM_SLEEP); 2322a6d42e7dSPeter Dunlap 2323a6d42e7dSPeter Dunlap /* 2324a6d42e7dSPeter Dunlap * Note, we're explicitly allocating an additional iSER header- 2325a6d42e7dSPeter Dunlap * sized chunk for each of these elements. See idm_task_constructor(). 2326a6d42e7dSPeter Dunlap */ 2327a6d42e7dSPeter Dunlap idm.idm_task_cache = kmem_cache_create("idm_task_cache", 2328a6d42e7dSPeter Dunlap sizeof (idm_task_t) + IDM_TRANSPORT_HEADER_LENGTH, 8, 2329a6d42e7dSPeter Dunlap &idm_task_constructor, &idm_task_destructor, 2330a6d42e7dSPeter Dunlap NULL, NULL, NULL, KM_SLEEP); 2331a6d42e7dSPeter Dunlap 2332a6d42e7dSPeter Dunlap /* Create the service and connection context lists */ 2333a6d42e7dSPeter Dunlap list_create(&idm.idm_tgt_svc_list, sizeof (idm_svc_t), 2334a6d42e7dSPeter Dunlap offsetof(idm_svc_t, is_list_node)); 2335a6d42e7dSPeter Dunlap list_create(&idm.idm_tgt_conn_list, sizeof (idm_conn_t), 2336a6d42e7dSPeter Dunlap offsetof(idm_conn_t, ic_list_node)); 2337a6d42e7dSPeter Dunlap list_create(&idm.idm_ini_conn_list, sizeof (idm_conn_t), 2338a6d42e7dSPeter Dunlap offsetof(idm_conn_t, ic_list_node)); 2339a6d42e7dSPeter Dunlap 2340a6d42e7dSPeter Dunlap /* Initialize the native sockets transport */ 2341a6d42e7dSPeter Dunlap idm_so_init(&idm_transport_list[IDM_TRANSPORT_TYPE_SOCKETS]); 2342a6d42e7dSPeter Dunlap 2343a6d42e7dSPeter Dunlap /* Create connection ID pool */ 2344a6d42e7dSPeter Dunlap (void) idm_idpool_create(&idm.idm_conn_id_pool); 2345a6d42e7dSPeter Dunlap 2346a6d42e7dSPeter Dunlap return (DDI_SUCCESS); 2347a6d42e7dSPeter Dunlap } 2348a6d42e7dSPeter Dunlap 2349a6d42e7dSPeter Dunlap static int 2350a6d42e7dSPeter Dunlap _idm_fini(void) 2351a6d42e7dSPeter Dunlap { 2352a6d42e7dSPeter Dunlap if (!list_is_empty(&idm.idm_ini_conn_list) || 2353a6d42e7dSPeter Dunlap !list_is_empty(&idm.idm_tgt_conn_list) || 2354a6d42e7dSPeter Dunlap !list_is_empty(&idm.idm_tgt_svc_list)) { 2355a6d42e7dSPeter Dunlap return (EBUSY); 2356a6d42e7dSPeter Dunlap } 2357a6d42e7dSPeter Dunlap 2358a6d42e7dSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 2359a6d42e7dSPeter Dunlap idm.idm_wd_thread_running = B_FALSE; 2360a6d42e7dSPeter Dunlap cv_signal(&idm.idm_wd_cv); 2361a6d42e7dSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 2362a6d42e7dSPeter Dunlap 2363a6d42e7dSPeter Dunlap thread_join(idm.idm_wd_thread_did); 2364a6d42e7dSPeter Dunlap 2365a6d42e7dSPeter Dunlap idm_idpool_destroy(&idm.idm_conn_id_pool); 236630e7468fSPeter Dunlap 236730e7468fSPeter Dunlap /* Close any LDI handles we have open on transport drivers */ 236830e7468fSPeter Dunlap mutex_enter(&idm.idm_global_mutex); 236930e7468fSPeter Dunlap idm_transport_teardown(); 237030e7468fSPeter Dunlap mutex_exit(&idm.idm_global_mutex); 237130e7468fSPeter Dunlap 237230e7468fSPeter Dunlap /* Teardown the native sockets transport */ 2373a6d42e7dSPeter Dunlap idm_so_fini(); 237430e7468fSPeter Dunlap 2375a6d42e7dSPeter Dunlap list_destroy(&idm.idm_ini_conn_list); 2376a6d42e7dSPeter Dunlap list_destroy(&idm.idm_tgt_conn_list); 2377a6d42e7dSPeter Dunlap list_destroy(&idm.idm_tgt_svc_list); 2378a6d42e7dSPeter Dunlap kmem_cache_destroy(idm.idm_task_cache); 2379a6d42e7dSPeter Dunlap kmem_cache_destroy(idm.idm_buf_cache); 2380a6d42e7dSPeter Dunlap kmem_free(idm.idm_taskid_table, 2381a6d42e7dSPeter Dunlap idm.idm_taskid_max * sizeof (idm_task_t *)); 2382a6d42e7dSPeter Dunlap mutex_destroy(&idm.idm_global_mutex); 2383a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_wd_cv); 2384a6d42e7dSPeter Dunlap cv_destroy(&idm.idm_tgt_svc_cv); 2385a6d42e7dSPeter Dunlap rw_destroy(&idm.idm_taskid_table_lock); 2386a6d42e7dSPeter Dunlap 2387a6d42e7dSPeter Dunlap return (0); 2388a6d42e7dSPeter Dunlap } 2389