1a6d42e7dSPeter Dunlap /* 2a6d42e7dSPeter Dunlap * CDDL HEADER START 3a6d42e7dSPeter Dunlap * 4a6d42e7dSPeter Dunlap * The contents of this file are subject to the terms of the 5a6d42e7dSPeter Dunlap * Common Development and Distribution License (the "License"). 6a6d42e7dSPeter Dunlap * You may not use this file except in compliance with the License. 7a6d42e7dSPeter Dunlap * 8a6d42e7dSPeter Dunlap * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9a6d42e7dSPeter Dunlap * or http://www.opensolaris.org/os/licensing. 10a6d42e7dSPeter Dunlap * See the License for the specific language governing permissions 11a6d42e7dSPeter Dunlap * and limitations under the License. 12a6d42e7dSPeter Dunlap * 13a6d42e7dSPeter Dunlap * When distributing Covered Code, include this CDDL HEADER in each 14a6d42e7dSPeter Dunlap * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15a6d42e7dSPeter Dunlap * If applicable, add the following below this CDDL HEADER, with the 16a6d42e7dSPeter Dunlap * fields enclosed by brackets "[]" replaced with your own identifying 17a6d42e7dSPeter Dunlap * information: Portions Copyright [yyyy] [name of copyright owner] 18a6d42e7dSPeter Dunlap * 19a6d42e7dSPeter Dunlap * CDDL HEADER END 20a6d42e7dSPeter Dunlap */ 21a6d42e7dSPeter Dunlap /* 22*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * Copyright 2010 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/types.h> 28a6d42e7dSPeter Dunlap #include <sys/conf.h> 29a6d42e7dSPeter Dunlap #include <sys/stat.h> 30a6d42e7dSPeter Dunlap #include <sys/file.h> 31a6d42e7dSPeter Dunlap #include <sys/ddi.h> 32a6d42e7dSPeter Dunlap #include <sys/sunddi.h> 33a6d42e7dSPeter Dunlap #include <sys/modctl.h> 34a6d42e7dSPeter Dunlap #include <sys/sysmacros.h> 35a6d42e7dSPeter Dunlap #include <sys/socket.h> 36a6d42e7dSPeter Dunlap #include <sys/strsubr.h> 37a6d42e7dSPeter Dunlap #include <sys/nvpair.h> 38a6d42e7dSPeter Dunlap 39a6d42e7dSPeter Dunlap #include <sys/stmf.h> 40a6d42e7dSPeter Dunlap #include <sys/stmf_ioctl.h> 41a6d42e7dSPeter Dunlap #include <sys/portif.h> 42a6d42e7dSPeter Dunlap #include <sys/idm/idm.h> 43a6d42e7dSPeter Dunlap #include <sys/idm/idm_conn_sm.h> 44a6d42e7dSPeter Dunlap #include <iscsit_isns.h> 45a6d42e7dSPeter Dunlap #include <iscsit.h> 46a6d42e7dSPeter Dunlap 47a6d42e7dSPeter Dunlap #define ISCSIT_VERSION BUILD_DATE "-1.18dev" 48a6d42e7dSPeter Dunlap #define ISCSIT_NAME_VERSION "COMSTAR ISCSIT v" ISCSIT_VERSION 49a6d42e7dSPeter Dunlap 50a6d42e7dSPeter Dunlap /* 51a6d42e7dSPeter Dunlap * DDI entry points. 52a6d42e7dSPeter Dunlap */ 53a6d42e7dSPeter Dunlap static int iscsit_drv_attach(dev_info_t *, ddi_attach_cmd_t); 54a6d42e7dSPeter Dunlap static int iscsit_drv_detach(dev_info_t *, ddi_detach_cmd_t); 55a6d42e7dSPeter Dunlap static int iscsit_drv_getinfo(dev_info_t *, ddi_info_cmd_t, void *, void **); 56a6d42e7dSPeter Dunlap static int iscsit_drv_open(dev_t *, int, int, cred_t *); 57a6d42e7dSPeter Dunlap static int iscsit_drv_close(dev_t, int, int, cred_t *); 58a6d42e7dSPeter Dunlap static boolean_t iscsit_drv_busy(void); 59a6d42e7dSPeter Dunlap static int iscsit_drv_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); 60a6d42e7dSPeter Dunlap 61a6d42e7dSPeter Dunlap extern struct mod_ops mod_miscops; 62a6d42e7dSPeter Dunlap 63a6d42e7dSPeter Dunlap 64a6d42e7dSPeter Dunlap static struct cb_ops iscsit_cb_ops = { 65a6d42e7dSPeter Dunlap iscsit_drv_open, /* cb_open */ 66a6d42e7dSPeter Dunlap iscsit_drv_close, /* cb_close */ 67a6d42e7dSPeter Dunlap nodev, /* cb_strategy */ 68a6d42e7dSPeter Dunlap nodev, /* cb_print */ 69a6d42e7dSPeter Dunlap nodev, /* cb_dump */ 70a6d42e7dSPeter Dunlap nodev, /* cb_read */ 71a6d42e7dSPeter Dunlap nodev, /* cb_write */ 72a6d42e7dSPeter Dunlap iscsit_drv_ioctl, /* cb_ioctl */ 73a6d42e7dSPeter Dunlap nodev, /* cb_devmap */ 74a6d42e7dSPeter Dunlap nodev, /* cb_mmap */ 75a6d42e7dSPeter Dunlap nodev, /* cb_segmap */ 76a6d42e7dSPeter Dunlap nochpoll, /* cb_chpoll */ 77a6d42e7dSPeter Dunlap ddi_prop_op, /* cb_prop_op */ 78a6d42e7dSPeter Dunlap NULL, /* cb_streamtab */ 79a6d42e7dSPeter Dunlap D_MP, /* cb_flag */ 80a6d42e7dSPeter Dunlap CB_REV, /* cb_rev */ 81a6d42e7dSPeter Dunlap nodev, /* cb_aread */ 82a6d42e7dSPeter Dunlap nodev, /* cb_awrite */ 83a6d42e7dSPeter Dunlap }; 84a6d42e7dSPeter Dunlap 85a6d42e7dSPeter Dunlap static struct dev_ops iscsit_dev_ops = { 86a6d42e7dSPeter Dunlap DEVO_REV, /* devo_rev */ 87a6d42e7dSPeter Dunlap 0, /* devo_refcnt */ 88a6d42e7dSPeter Dunlap iscsit_drv_getinfo, /* devo_getinfo */ 89a6d42e7dSPeter Dunlap nulldev, /* devo_identify */ 90a6d42e7dSPeter Dunlap nulldev, /* devo_probe */ 91a6d42e7dSPeter Dunlap iscsit_drv_attach, /* devo_attach */ 92a6d42e7dSPeter Dunlap iscsit_drv_detach, /* devo_detach */ 93a6d42e7dSPeter Dunlap nodev, /* devo_reset */ 94a6d42e7dSPeter Dunlap &iscsit_cb_ops, /* devo_cb_ops */ 95a6d42e7dSPeter Dunlap NULL, /* devo_bus_ops */ 96a6d42e7dSPeter Dunlap NULL, /* devo_power */ 9763528ae4SJames Moore ddi_quiesce_not_needed, /* quiesce */ 98a6d42e7dSPeter Dunlap }; 99a6d42e7dSPeter Dunlap 100a6d42e7dSPeter Dunlap static struct modldrv modldrv = { 101a6d42e7dSPeter Dunlap &mod_driverops, 102a6d42e7dSPeter Dunlap "iSCSI Target", 103a6d42e7dSPeter Dunlap &iscsit_dev_ops, 104a6d42e7dSPeter Dunlap }; 105a6d42e7dSPeter Dunlap 106a6d42e7dSPeter Dunlap static struct modlinkage modlinkage = { 107a6d42e7dSPeter Dunlap MODREV_1, 108a6d42e7dSPeter Dunlap &modldrv, 109a6d42e7dSPeter Dunlap NULL, 110a6d42e7dSPeter Dunlap }; 111a6d42e7dSPeter Dunlap 112a6d42e7dSPeter Dunlap 113a6d42e7dSPeter Dunlap iscsit_global_t iscsit_global; 114a6d42e7dSPeter Dunlap 115a6d42e7dSPeter Dunlap kmem_cache_t *iscsit_status_pdu_cache; 116a6d42e7dSPeter Dunlap 117a6d42e7dSPeter Dunlap boolean_t iscsit_sm_logging = B_FALSE; 118a6d42e7dSPeter Dunlap 119a6d42e7dSPeter Dunlap static idm_status_t iscsit_init(dev_info_t *dip); 120a6d42e7dSPeter Dunlap static idm_status_t iscsit_enable_svc(iscsit_hostinfo_t *hostinfo); 121a6d42e7dSPeter Dunlap static void iscsit_disable_svc(void); 122a6d42e7dSPeter Dunlap 123a6d42e7dSPeter Dunlap static void 124a6d42e7dSPeter Dunlap iscsit_op_scsi_task_mgmt(iscsit_conn_t *ict, idm_pdu_t *rx_pdu); 125a6d42e7dSPeter Dunlap 126a6d42e7dSPeter Dunlap static void 127a6d42e7dSPeter Dunlap iscsit_pdu_op_noop(iscsit_conn_t *ict, idm_pdu_t *rx_pdu); 128a6d42e7dSPeter Dunlap 129a6d42e7dSPeter Dunlap static void 130a6d42e7dSPeter Dunlap iscsit_pdu_op_login_cmd(iscsit_conn_t *ict, idm_pdu_t *rx_pdu); 131a6d42e7dSPeter Dunlap 132a6d42e7dSPeter Dunlap void 133a6d42e7dSPeter Dunlap iscsit_pdu_op_text_cmd(iscsit_conn_t *ict, idm_pdu_t *rx_pdu); 134a6d42e7dSPeter Dunlap 135a6d42e7dSPeter Dunlap static void 136a6d42e7dSPeter Dunlap iscsit_pdu_op_logout_cmd(iscsit_conn_t *ict, idm_pdu_t *rx_pdu); 137a6d42e7dSPeter Dunlap 138a6d42e7dSPeter Dunlap int iscsit_cmd_window(); 139a6d42e7dSPeter Dunlap 140a6d42e7dSPeter Dunlap void 141a6d42e7dSPeter Dunlap iscsit_set_cmdsn(iscsit_conn_t *ict, idm_pdu_t *rx_pdu); 142a6d42e7dSPeter Dunlap 143a6d42e7dSPeter Dunlap static void 144a6d42e7dSPeter Dunlap iscsit_deferred_dispatch(idm_pdu_t *rx_pdu); 145a6d42e7dSPeter Dunlap 146a6d42e7dSPeter Dunlap static void 147a6d42e7dSPeter Dunlap iscsit_deferred(void *rx_pdu_void); 148a6d42e7dSPeter Dunlap 149a6d42e7dSPeter Dunlap static idm_status_t 150a6d42e7dSPeter Dunlap iscsit_conn_accept(idm_conn_t *ic); 151a6d42e7dSPeter Dunlap 152a6d42e7dSPeter Dunlap static idm_status_t 153a6d42e7dSPeter Dunlap iscsit_ffp_enabled(idm_conn_t *ic); 154a6d42e7dSPeter Dunlap 155a6d42e7dSPeter Dunlap static idm_status_t 156a6d42e7dSPeter Dunlap iscsit_ffp_disabled(idm_conn_t *ic, idm_ffp_disable_t disable_class); 157a6d42e7dSPeter Dunlap 158a6d42e7dSPeter Dunlap static idm_status_t 159a6d42e7dSPeter Dunlap iscsit_conn_lost(idm_conn_t *ic); 160a6d42e7dSPeter Dunlap 161a6d42e7dSPeter Dunlap static idm_status_t 162a6d42e7dSPeter Dunlap iscsit_conn_destroy(idm_conn_t *ic); 163a6d42e7dSPeter Dunlap 164a6d42e7dSPeter Dunlap static stmf_data_buf_t * 165a6d42e7dSPeter Dunlap iscsit_dbuf_alloc(scsi_task_t *task, uint32_t size, uint32_t *pminsize, 166a6d42e7dSPeter Dunlap uint32_t flags); 167a6d42e7dSPeter Dunlap 168a6d42e7dSPeter Dunlap static void 169a6d42e7dSPeter Dunlap iscsit_dbuf_free(stmf_dbuf_store_t *ds, stmf_data_buf_t *dbuf); 170a6d42e7dSPeter Dunlap 171a6d42e7dSPeter Dunlap static void 172a6d42e7dSPeter Dunlap iscsit_buf_xfer_cb(idm_buf_t *idb, idm_status_t status); 173a6d42e7dSPeter Dunlap 174a6d42e7dSPeter Dunlap static void 175a6d42e7dSPeter Dunlap iscsit_send_good_status_done(idm_pdu_t *pdu, idm_status_t status); 176a6d42e7dSPeter Dunlap 177a6d42e7dSPeter Dunlap static void 178a6d42e7dSPeter Dunlap iscsit_send_status_done(idm_pdu_t *pdu, idm_status_t status); 179a6d42e7dSPeter Dunlap 180a6d42e7dSPeter Dunlap static stmf_status_t 181a6d42e7dSPeter Dunlap iscsit_idm_to_stmf(idm_status_t idmrc); 182a6d42e7dSPeter Dunlap 183a6d42e7dSPeter Dunlap static iscsit_task_t * 184a6d42e7dSPeter Dunlap iscsit_task_alloc(iscsit_conn_t *ict); 185a6d42e7dSPeter Dunlap 186a6d42e7dSPeter Dunlap static void 187a6d42e7dSPeter Dunlap iscsit_task_free(iscsit_task_t *itask); 188a6d42e7dSPeter Dunlap 189a6d42e7dSPeter Dunlap static iscsit_task_t * 190a6d42e7dSPeter Dunlap iscsit_tm_task_alloc(iscsit_conn_t *ict); 191a6d42e7dSPeter Dunlap 192a6d42e7dSPeter Dunlap static void 193a6d42e7dSPeter Dunlap iscsit_tm_task_free(iscsit_task_t *itask); 194a6d42e7dSPeter Dunlap 19572cf3143Speter dunlap static idm_status_t 19672cf3143Speter dunlap iscsit_task_start(iscsit_task_t *itask); 19772cf3143Speter dunlap 19872cf3143Speter dunlap static void 19972cf3143Speter dunlap iscsit_task_done(iscsit_task_t *itask); 20072cf3143Speter dunlap 201a6d42e7dSPeter Dunlap static int 202a6d42e7dSPeter Dunlap iscsit_status_pdu_constructor(void *pdu_void, void *arg, int flags); 203a6d42e7dSPeter Dunlap 204a6d42e7dSPeter Dunlap static void 205a6d42e7dSPeter Dunlap iscsit_pp_cb(struct stmf_port_provider *pp, int cmd, void *arg, uint32_t flags); 206a6d42e7dSPeter Dunlap 207a6d42e7dSPeter Dunlap static it_cfg_status_t 208a6d42e7dSPeter Dunlap iscsit_config_merge(it_config_t *cfg); 209a6d42e7dSPeter Dunlap 210a6d42e7dSPeter Dunlap static idm_status_t 211a6d42e7dSPeter Dunlap iscsit_login_fail(idm_conn_t *ic); 212a6d42e7dSPeter Dunlap 21372cf3143Speter dunlap static boolean_t iscsit_cmdsn_in_window(iscsit_conn_t *ict, uint32_t cmdsn); 21472cf3143Speter dunlap static void iscsit_send_direct_scsi_resp(iscsit_conn_t *ict, idm_pdu_t *rx_pdu, 21572cf3143Speter dunlap uint8_t response, uint8_t cmd_status); 21672cf3143Speter dunlap static void iscsit_send_task_mgmt_resp(idm_pdu_t *tm_resp_pdu, 21772cf3143Speter dunlap uint8_t tm_status); 21872cf3143Speter dunlap 219a6d42e7dSPeter Dunlap int 220a6d42e7dSPeter Dunlap _init(void) 221a6d42e7dSPeter Dunlap { 222a6d42e7dSPeter Dunlap int rc; 223a6d42e7dSPeter Dunlap 224a6d42e7dSPeter Dunlap rw_init(&iscsit_global.global_rwlock, NULL, RW_DRIVER, NULL); 225*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_init(&iscsit_global.global_state_mutex, NULL, 226*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States MUTEX_DRIVER, NULL); 227a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DETACHED; 228a6d42e7dSPeter Dunlap 229a6d42e7dSPeter Dunlap if ((rc = mod_install(&modlinkage)) != 0) { 230*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_destroy(&iscsit_global.global_state_mutex); 231a6d42e7dSPeter Dunlap rw_destroy(&iscsit_global.global_rwlock); 232a6d42e7dSPeter Dunlap return (rc); 233a6d42e7dSPeter Dunlap } 234a6d42e7dSPeter Dunlap 235a6d42e7dSPeter Dunlap return (rc); 236a6d42e7dSPeter Dunlap } 237a6d42e7dSPeter Dunlap 238a6d42e7dSPeter Dunlap int 239a6d42e7dSPeter Dunlap _info(struct modinfo *modinfop) 240a6d42e7dSPeter Dunlap { 241a6d42e7dSPeter Dunlap return (mod_info(&modlinkage, modinfop)); 242a6d42e7dSPeter Dunlap } 243a6d42e7dSPeter Dunlap 244a6d42e7dSPeter Dunlap int 245a6d42e7dSPeter Dunlap _fini(void) 246a6d42e7dSPeter Dunlap { 247a6d42e7dSPeter Dunlap int rc; 248a6d42e7dSPeter Dunlap 249a6d42e7dSPeter Dunlap rc = mod_remove(&modlinkage); 250a6d42e7dSPeter Dunlap 251a6d42e7dSPeter Dunlap if (rc == 0) { 252*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_destroy(&iscsit_global.global_state_mutex); 253a6d42e7dSPeter Dunlap rw_destroy(&iscsit_global.global_rwlock); 254a6d42e7dSPeter Dunlap } 255a6d42e7dSPeter Dunlap 256a6d42e7dSPeter Dunlap return (rc); 257a6d42e7dSPeter Dunlap } 258a6d42e7dSPeter Dunlap 259a6d42e7dSPeter Dunlap /* 260a6d42e7dSPeter Dunlap * DDI entry points. 261a6d42e7dSPeter Dunlap */ 262a6d42e7dSPeter Dunlap 263a6d42e7dSPeter Dunlap /* ARGSUSED */ 264a6d42e7dSPeter Dunlap static int 265a6d42e7dSPeter Dunlap iscsit_drv_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, 266a6d42e7dSPeter Dunlap void **result) 267a6d42e7dSPeter Dunlap { 268a6d42e7dSPeter Dunlap ulong_t instance = getminor((dev_t)arg); 269a6d42e7dSPeter Dunlap 270a6d42e7dSPeter Dunlap switch (cmd) { 271a6d42e7dSPeter Dunlap case DDI_INFO_DEVT2DEVINFO: 272a6d42e7dSPeter Dunlap *result = iscsit_global.global_dip; 273a6d42e7dSPeter Dunlap return (DDI_SUCCESS); 274a6d42e7dSPeter Dunlap 275a6d42e7dSPeter Dunlap case DDI_INFO_DEVT2INSTANCE: 276a6d42e7dSPeter Dunlap *result = (void *)instance; 277a6d42e7dSPeter Dunlap return (DDI_SUCCESS); 278a6d42e7dSPeter Dunlap 279a6d42e7dSPeter Dunlap default: 280a6d42e7dSPeter Dunlap break; 281a6d42e7dSPeter Dunlap } 282a6d42e7dSPeter Dunlap 283a6d42e7dSPeter Dunlap return (DDI_FAILURE); 284a6d42e7dSPeter Dunlap } 285a6d42e7dSPeter Dunlap 286a6d42e7dSPeter Dunlap static int 287a6d42e7dSPeter Dunlap iscsit_drv_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 288a6d42e7dSPeter Dunlap { 289a6d42e7dSPeter Dunlap if (cmd != DDI_ATTACH) { 290a6d42e7dSPeter Dunlap return (DDI_FAILURE); 291a6d42e7dSPeter Dunlap } 292a6d42e7dSPeter Dunlap 293a6d42e7dSPeter Dunlap if (ddi_get_instance(dip) != 0) { 294a6d42e7dSPeter Dunlap /* we only allow instance 0 to attach */ 295a6d42e7dSPeter Dunlap return (DDI_FAILURE); 296a6d42e7dSPeter Dunlap } 297a6d42e7dSPeter Dunlap 298a6d42e7dSPeter Dunlap /* create the minor node */ 299a6d42e7dSPeter Dunlap if (ddi_create_minor_node(dip, ISCSIT_MODNAME, S_IFCHR, 0, 300a6d42e7dSPeter Dunlap DDI_PSEUDO, 0) != DDI_SUCCESS) { 301a6d42e7dSPeter Dunlap cmn_err(CE_WARN, "iscsit_drv_attach: " 302a6d42e7dSPeter Dunlap "failed creating minor node"); 303a6d42e7dSPeter Dunlap return (DDI_FAILURE); 304a6d42e7dSPeter Dunlap } 305a6d42e7dSPeter Dunlap 306a6d42e7dSPeter Dunlap if (iscsit_init(dip) != IDM_STATUS_SUCCESS) { 307a6d42e7dSPeter Dunlap cmn_err(CE_WARN, "iscsit_drv_attach: " 308a6d42e7dSPeter Dunlap "failed to initialize"); 309a6d42e7dSPeter Dunlap ddi_remove_minor_node(dip, NULL); 310a6d42e7dSPeter Dunlap return (DDI_FAILURE); 311a6d42e7dSPeter Dunlap } 312a6d42e7dSPeter Dunlap 313a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 314a6d42e7dSPeter Dunlap iscsit_global.global_dip = dip; 315a6d42e7dSPeter Dunlap 316a6d42e7dSPeter Dunlap return (DDI_SUCCESS); 317a6d42e7dSPeter Dunlap } 318a6d42e7dSPeter Dunlap 319a6d42e7dSPeter Dunlap /*ARGSUSED*/ 320a6d42e7dSPeter Dunlap static int 321a6d42e7dSPeter Dunlap iscsit_drv_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 322a6d42e7dSPeter Dunlap { 323a6d42e7dSPeter Dunlap if (cmd != DDI_DETACH) 324a6d42e7dSPeter Dunlap return (DDI_FAILURE); 325a6d42e7dSPeter Dunlap 326*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States /* 327*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * drv_detach is called in a context that owns the 328*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * device node for the /dev/pseudo device. If this thread blocks 329*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * for any resource, other threads that need the /dev/pseudo device 330*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * may end up in a deadlock with this thread.Hence, we use a 331*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * separate lock just for the structures that drv_detach needs 332*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * to access. 333*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States */ 334*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_enter(&iscsit_global.global_state_mutex); 335a6d42e7dSPeter Dunlap if (iscsit_drv_busy()) { 336*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 337a6d42e7dSPeter Dunlap return (EBUSY); 338a6d42e7dSPeter Dunlap } 339a6d42e7dSPeter Dunlap 340a6d42e7dSPeter Dunlap iscsit_global.global_dip = NULL; 341a6d42e7dSPeter Dunlap ddi_remove_minor_node(dip, NULL); 342a6d42e7dSPeter Dunlap 343a6d42e7dSPeter Dunlap ldi_ident_release(iscsit_global.global_li); 344a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DETACHED; 345a6d42e7dSPeter Dunlap 346*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 347a6d42e7dSPeter Dunlap 348a6d42e7dSPeter Dunlap return (DDI_SUCCESS); 349a6d42e7dSPeter Dunlap } 350a6d42e7dSPeter Dunlap 351a6d42e7dSPeter Dunlap /*ARGSUSED*/ 352a6d42e7dSPeter Dunlap static int 353a6d42e7dSPeter Dunlap iscsit_drv_open(dev_t *devp, int flag, int otyp, cred_t *credp) 354a6d42e7dSPeter Dunlap { 355a6d42e7dSPeter Dunlap return (0); 356a6d42e7dSPeter Dunlap } 357a6d42e7dSPeter Dunlap 358a6d42e7dSPeter Dunlap /* ARGSUSED */ 359a6d42e7dSPeter Dunlap static int 360a6d42e7dSPeter Dunlap iscsit_drv_close(dev_t dev, int flag, int otyp, cred_t *credp) 361a6d42e7dSPeter Dunlap { 362a6d42e7dSPeter Dunlap return (0); 363a6d42e7dSPeter Dunlap } 364a6d42e7dSPeter Dunlap 365a6d42e7dSPeter Dunlap static boolean_t 366a6d42e7dSPeter Dunlap iscsit_drv_busy(void) 367a6d42e7dSPeter Dunlap { 368*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States ASSERT(MUTEX_HELD(&iscsit_global.global_state_mutex)); 369*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States 370a6d42e7dSPeter Dunlap switch (iscsit_global.global_svc_state) { 371a6d42e7dSPeter Dunlap case ISE_DISABLED: 372a6d42e7dSPeter Dunlap case ISE_DETACHED: 373a6d42e7dSPeter Dunlap return (B_FALSE); 374a6d42e7dSPeter Dunlap default: 375a6d42e7dSPeter Dunlap return (B_TRUE); 376a6d42e7dSPeter Dunlap } 377a6d42e7dSPeter Dunlap /* NOTREACHED */ 378a6d42e7dSPeter Dunlap } 379a6d42e7dSPeter Dunlap 380a6d42e7dSPeter Dunlap /* ARGSUSED */ 381a6d42e7dSPeter Dunlap static int 382a6d42e7dSPeter Dunlap iscsit_drv_ioctl(dev_t drv, int cmd, intptr_t argp, int flag, cred_t *cred, 383a6d42e7dSPeter Dunlap int *retval) 384a6d42e7dSPeter Dunlap { 385a6d42e7dSPeter Dunlap iscsit_ioc_set_config_t setcfg; 386a6d42e7dSPeter Dunlap iscsit_ioc_set_config32_t setcfg32; 38707a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States char *cfg_pnvlist = NULL; 38807a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States nvlist_t *cfg_nvlist = NULL; 38907a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States it_config_t *cfg = NULL; 390a6d42e7dSPeter Dunlap idm_status_t idmrc; 391a6d42e7dSPeter Dunlap int rc = 0; 392a6d42e7dSPeter Dunlap 393a6d42e7dSPeter Dunlap if (drv_priv(cred) != 0) { 394a6d42e7dSPeter Dunlap return (EPERM); 395a6d42e7dSPeter Dunlap } 396a6d42e7dSPeter Dunlap 397*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_enter(&iscsit_global.global_state_mutex); 398a6d42e7dSPeter Dunlap 399a6d42e7dSPeter Dunlap /* 400a6d42e7dSPeter Dunlap * Validate ioctl requests against global service state 401a6d42e7dSPeter Dunlap */ 402a6d42e7dSPeter Dunlap switch (iscsit_global.global_svc_state) { 403a6d42e7dSPeter Dunlap case ISE_ENABLED: 404a6d42e7dSPeter Dunlap if (cmd == ISCSIT_IOC_DISABLE_SVC) { 405a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLING; 406a6d42e7dSPeter Dunlap } else if (cmd == ISCSIT_IOC_ENABLE_SVC) { 407a6d42e7dSPeter Dunlap /* Already enabled */ 408*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 409a6d42e7dSPeter Dunlap return (0); 410a6d42e7dSPeter Dunlap } else { 411a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_BUSY; 412a6d42e7dSPeter Dunlap } 413a6d42e7dSPeter Dunlap break; 414a6d42e7dSPeter Dunlap case ISE_DISABLED: 415a6d42e7dSPeter Dunlap if (cmd == ISCSIT_IOC_ENABLE_SVC) { 416a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_ENABLING; 417a6d42e7dSPeter Dunlap } else if (cmd == ISCSIT_IOC_DISABLE_SVC) { 418a6d42e7dSPeter Dunlap /* Already disabled */ 419*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 420a6d42e7dSPeter Dunlap return (0); 421a6d42e7dSPeter Dunlap } else { 422a6d42e7dSPeter Dunlap rc = EFAULT; 423a6d42e7dSPeter Dunlap } 424a6d42e7dSPeter Dunlap break; 425*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States case ISE_BUSY: 426a6d42e7dSPeter Dunlap case ISE_ENABLING: 427a6d42e7dSPeter Dunlap case ISE_DISABLING: 428a6d42e7dSPeter Dunlap rc = EAGAIN; 429a6d42e7dSPeter Dunlap break; 430a6d42e7dSPeter Dunlap case ISE_DETACHED: 431a6d42e7dSPeter Dunlap default: 432a6d42e7dSPeter Dunlap rc = EFAULT; 433a6d42e7dSPeter Dunlap break; 434a6d42e7dSPeter Dunlap } 435a6d42e7dSPeter Dunlap 436*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 437a6d42e7dSPeter Dunlap if (rc != 0) 438a6d42e7dSPeter Dunlap return (rc); 439a6d42e7dSPeter Dunlap 440a6d42e7dSPeter Dunlap /* Handle ioctl request (enable/disable have already been handled) */ 441a6d42e7dSPeter Dunlap switch (cmd) { 442a6d42e7dSPeter Dunlap case ISCSIT_IOC_SET_CONFIG: 44307a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States /* Any errors must set state back to ISE_ENABLED */ 444a6d42e7dSPeter Dunlap switch (ddi_model_convert_from(flag & FMODELS)) { 445a6d42e7dSPeter Dunlap case DDI_MODEL_ILP32: 446a6d42e7dSPeter Dunlap if (ddi_copyin((void *)argp, &setcfg32, 44707a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States sizeof (iscsit_ioc_set_config32_t), flag) != 0) { 44807a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States rc = EFAULT; 44907a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States goto cleanup; 45007a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States } 451a6d42e7dSPeter Dunlap 452a6d42e7dSPeter Dunlap setcfg.set_cfg_pnvlist = 453a6d42e7dSPeter Dunlap (char *)((uintptr_t)setcfg32.set_cfg_pnvlist); 454a6d42e7dSPeter Dunlap setcfg.set_cfg_vers = setcfg32.set_cfg_vers; 455a6d42e7dSPeter Dunlap setcfg.set_cfg_pnvlist_len = 456a6d42e7dSPeter Dunlap setcfg32.set_cfg_pnvlist_len; 457a6d42e7dSPeter Dunlap break; 458a6d42e7dSPeter Dunlap case DDI_MODEL_NONE: 459a6d42e7dSPeter Dunlap if (ddi_copyin((void *)argp, &setcfg, 46007a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States sizeof (iscsit_ioc_set_config_t), flag) != 0) { 46107a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States rc = EFAULT; 46207a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States goto cleanup; 46307a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States } 464a6d42e7dSPeter Dunlap break; 465fcc214c3SCharles Ting default: 466fcc214c3SCharles Ting rc = EFAULT; 467fcc214c3SCharles Ting goto cleanup; 468a6d42e7dSPeter Dunlap } 469a6d42e7dSPeter Dunlap 470a6d42e7dSPeter Dunlap /* Check API version */ 471a6d42e7dSPeter Dunlap if (setcfg.set_cfg_vers != ISCSIT_API_VERS0) { 47207a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States rc = EINVAL; 47307a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States goto cleanup; 474a6d42e7dSPeter Dunlap } 475a6d42e7dSPeter Dunlap 476a6d42e7dSPeter Dunlap /* Config is in packed nvlist format so unpack it */ 477a6d42e7dSPeter Dunlap cfg_pnvlist = kmem_alloc(setcfg.set_cfg_pnvlist_len, 478a6d42e7dSPeter Dunlap KM_SLEEP); 479a6d42e7dSPeter Dunlap ASSERT(cfg_pnvlist != NULL); 480a6d42e7dSPeter Dunlap 481a6d42e7dSPeter Dunlap if (ddi_copyin(setcfg.set_cfg_pnvlist, cfg_pnvlist, 482a6d42e7dSPeter Dunlap setcfg.set_cfg_pnvlist_len, flag) != 0) { 48307a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States rc = EFAULT; 48407a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States goto cleanup; 485a6d42e7dSPeter Dunlap } 486a6d42e7dSPeter Dunlap 48707a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States rc = nvlist_unpack(cfg_pnvlist, setcfg.set_cfg_pnvlist_len, 48807a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States &cfg_nvlist, KM_SLEEP); 48907a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States if (rc != 0) { 49007a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States goto cleanup; 491a6d42e7dSPeter Dunlap } 492a6d42e7dSPeter Dunlap 493a6d42e7dSPeter Dunlap /* Translate nvlist */ 49407a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States rc = it_nv_to_config(cfg_nvlist, &cfg); 49507a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States if (rc != 0) { 496a6d42e7dSPeter Dunlap cmn_err(CE_WARN, "Configuration is invalid"); 49707a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States goto cleanup; 498a6d42e7dSPeter Dunlap } 499a6d42e7dSPeter Dunlap 500a6d42e7dSPeter Dunlap /* Update config */ 50107a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States rc = iscsit_config_merge(cfg); 50207a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States /* FALLTHROUGH */ 50307a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States 50407a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States cleanup: 50507a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States if (cfg) 50607a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States it_config_free_cmn(cfg); 50707a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States if (cfg_pnvlist) 508a6d42e7dSPeter Dunlap kmem_free(cfg_pnvlist, setcfg.set_cfg_pnvlist_len); 50907a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States if (cfg_nvlist) 510a6d42e7dSPeter Dunlap nvlist_free(cfg_nvlist); 511a6d42e7dSPeter Dunlap 512a6d42e7dSPeter Dunlap /* 513a6d42e7dSPeter Dunlap * Now that the reconfig is complete set our state back to 514a6d42e7dSPeter Dunlap * enabled. 515a6d42e7dSPeter Dunlap */ 516*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_enter(&iscsit_global.global_state_mutex); 517a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_ENABLED; 518*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 519a6d42e7dSPeter Dunlap break; 520a6d42e7dSPeter Dunlap case ISCSIT_IOC_ENABLE_SVC: { 521a6d42e7dSPeter Dunlap iscsit_hostinfo_t hostinfo; 522a6d42e7dSPeter Dunlap 523a6d42e7dSPeter Dunlap if (ddi_copyin((void *)argp, &hostinfo.length, 524a6d42e7dSPeter Dunlap sizeof (hostinfo.length), flag) != 0) { 525*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_enter(&iscsit_global.global_state_mutex); 526a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 527*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 528a6d42e7dSPeter Dunlap return (EFAULT); 529a6d42e7dSPeter Dunlap } 530a6d42e7dSPeter Dunlap 531a6d42e7dSPeter Dunlap if (hostinfo.length > sizeof (hostinfo.fqhn)) 532a6d42e7dSPeter Dunlap hostinfo.length = sizeof (hostinfo.fqhn); 533a6d42e7dSPeter Dunlap 534a6d42e7dSPeter Dunlap if (ddi_copyin((void *)((caddr_t)argp + 535a6d42e7dSPeter Dunlap sizeof (hostinfo.length)), &hostinfo.fqhn, 536a6d42e7dSPeter Dunlap hostinfo.length, flag) != 0) { 537*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_enter(&iscsit_global.global_state_mutex); 538a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 539*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 540a6d42e7dSPeter Dunlap return (EFAULT); 541a6d42e7dSPeter Dunlap } 542a6d42e7dSPeter Dunlap 543a6d42e7dSPeter Dunlap idmrc = iscsit_enable_svc(&hostinfo); 544*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_enter(&iscsit_global.global_state_mutex); 545a6d42e7dSPeter Dunlap if (idmrc == IDM_STATUS_SUCCESS) { 546a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_ENABLED; 547a6d42e7dSPeter Dunlap } else { 548a6d42e7dSPeter Dunlap rc = EIO; 549a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 550a6d42e7dSPeter Dunlap } 551*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 552a6d42e7dSPeter Dunlap break; 553a6d42e7dSPeter Dunlap } 554a6d42e7dSPeter Dunlap case ISCSIT_IOC_DISABLE_SVC: 555a6d42e7dSPeter Dunlap iscsit_disable_svc(); 556*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_enter(&iscsit_global.global_state_mutex); 557a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 558*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 559a6d42e7dSPeter Dunlap break; 56007a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States 561a6d42e7dSPeter Dunlap default: 562a6d42e7dSPeter Dunlap rc = EINVAL; 563*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_enter(&iscsit_global.global_state_mutex); 56407a2bfd1SPeter Cudhea - Sun Microsystems - Burlington, MA United States iscsit_global.global_svc_state = ISE_ENABLED; 565*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 566a6d42e7dSPeter Dunlap } 567a6d42e7dSPeter Dunlap 568a6d42e7dSPeter Dunlap return (rc); 569a6d42e7dSPeter Dunlap } 570a6d42e7dSPeter Dunlap 571a6d42e7dSPeter Dunlap static idm_status_t 572a6d42e7dSPeter Dunlap iscsit_init(dev_info_t *dip) 573a6d42e7dSPeter Dunlap { 574a6d42e7dSPeter Dunlap int rc; 575a6d42e7dSPeter Dunlap 576a6d42e7dSPeter Dunlap rc = ldi_ident_from_dip(dip, &iscsit_global.global_li); 577a6d42e7dSPeter Dunlap ASSERT(rc == 0); /* Failure indicates invalid argument */ 578a6d42e7dSPeter Dunlap 579a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 580a6d42e7dSPeter Dunlap 581a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 582a6d42e7dSPeter Dunlap } 583a6d42e7dSPeter Dunlap 584a6d42e7dSPeter Dunlap /* 585a6d42e7dSPeter Dunlap * iscsit_enable_svc 586a6d42e7dSPeter Dunlap * 587a6d42e7dSPeter Dunlap * registers all the configured targets and target portals with STMF 588a6d42e7dSPeter Dunlap */ 589a6d42e7dSPeter Dunlap static idm_status_t 590a6d42e7dSPeter Dunlap iscsit_enable_svc(iscsit_hostinfo_t *hostinfo) 591a6d42e7dSPeter Dunlap { 592a6d42e7dSPeter Dunlap stmf_port_provider_t *pp; 593a6d42e7dSPeter Dunlap stmf_dbuf_store_t *dbuf_store; 594a6d42e7dSPeter Dunlap boolean_t did_iscsit_isns_init; 595a6d42e7dSPeter Dunlap idm_status_t retval = IDM_STATUS_SUCCESS; 596a6d42e7dSPeter Dunlap 597a6d42e7dSPeter Dunlap ASSERT(iscsit_global.global_svc_state == ISE_ENABLING); 598a6d42e7dSPeter Dunlap 599a6d42e7dSPeter Dunlap /* 600a6d42e7dSPeter Dunlap * Make sure that can tell if we have partially allocated 601a6d42e7dSPeter Dunlap * in case we need to exit and tear down anything allocated. 602a6d42e7dSPeter Dunlap */ 603a6d42e7dSPeter Dunlap iscsit_global.global_tsih_pool = NULL; 604a6d42e7dSPeter Dunlap iscsit_global.global_dbuf_store = NULL; 605a6d42e7dSPeter Dunlap iscsit_status_pdu_cache = NULL; 606a6d42e7dSPeter Dunlap pp = NULL; 607a6d42e7dSPeter Dunlap iscsit_global.global_pp = NULL; 608a6d42e7dSPeter Dunlap iscsit_global.global_default_tpg = NULL; 609a6d42e7dSPeter Dunlap did_iscsit_isns_init = B_FALSE; 610a6d42e7dSPeter Dunlap iscsit_global.global_dispatch_taskq = NULL; 611a6d42e7dSPeter Dunlap 612a6d42e7dSPeter Dunlap /* Setup remaining fields in iscsit_global_t */ 613a6d42e7dSPeter Dunlap idm_refcnt_init(&iscsit_global.global_refcnt, 614a6d42e7dSPeter Dunlap &iscsit_global); 615a6d42e7dSPeter Dunlap 616a6d42e7dSPeter Dunlap avl_create(&iscsit_global.global_discovery_sessions, 617a6d42e7dSPeter Dunlap iscsit_sess_avl_compare, sizeof (iscsit_sess_t), 618a6d42e7dSPeter Dunlap offsetof(iscsit_sess_t, ist_tgt_ln)); 619a6d42e7dSPeter Dunlap 620a6d42e7dSPeter Dunlap avl_create(&iscsit_global.global_target_list, 621a6d42e7dSPeter Dunlap iscsit_tgt_avl_compare, sizeof (iscsit_tgt_t), 622a6d42e7dSPeter Dunlap offsetof(iscsit_tgt_t, target_global_ln)); 623a6d42e7dSPeter Dunlap 624a6d42e7dSPeter Dunlap list_create(&iscsit_global.global_deleted_target_list, 625a6d42e7dSPeter Dunlap sizeof (iscsit_tgt_t), 626a6d42e7dSPeter Dunlap offsetof(iscsit_tgt_t, target_global_deleted_ln)); 627a6d42e7dSPeter Dunlap 628a6d42e7dSPeter Dunlap avl_create(&iscsit_global.global_tpg_list, 629a6d42e7dSPeter Dunlap iscsit_tpg_avl_compare, sizeof (iscsit_tpg_t), 630a6d42e7dSPeter Dunlap offsetof(iscsit_tpg_t, tpg_global_ln)); 631a6d42e7dSPeter Dunlap 632a6d42e7dSPeter Dunlap avl_create(&iscsit_global.global_ini_list, 633a6d42e7dSPeter Dunlap iscsit_ini_avl_compare, sizeof (iscsit_ini_t), 634a6d42e7dSPeter Dunlap offsetof(iscsit_ini_t, ini_global_ln)); 635a6d42e7dSPeter Dunlap 636a6d42e7dSPeter Dunlap iscsit_global.global_tsih_pool = vmem_create("iscsit_tsih_pool", 637a6d42e7dSPeter Dunlap (void *)1, ISCSI_MAX_TSIH, 1, NULL, NULL, NULL, 0, 638a6d42e7dSPeter Dunlap VM_SLEEP | VMC_IDENTIFIER); 639a6d42e7dSPeter Dunlap 640a6d42e7dSPeter Dunlap /* 641a6d42e7dSPeter Dunlap * Setup STMF dbuf store. Our buffers are bound to a specific 642a6d42e7dSPeter Dunlap * connection so we really can't let STMF cache buffers for us. 643a6d42e7dSPeter Dunlap * Consequently we'll just allocate one global buffer store. 644a6d42e7dSPeter Dunlap */ 645a6d42e7dSPeter Dunlap dbuf_store = stmf_alloc(STMF_STRUCT_DBUF_STORE, 0, 0); 646a6d42e7dSPeter Dunlap if (dbuf_store == NULL) { 647a6d42e7dSPeter Dunlap retval = IDM_STATUS_FAIL; 648a6d42e7dSPeter Dunlap goto tear_down_and_return; 649a6d42e7dSPeter Dunlap } 650a6d42e7dSPeter Dunlap dbuf_store->ds_alloc_data_buf = iscsit_dbuf_alloc; 651a6d42e7dSPeter Dunlap dbuf_store->ds_free_data_buf = iscsit_dbuf_free; 652a6d42e7dSPeter Dunlap dbuf_store->ds_port_private = NULL; 653a6d42e7dSPeter Dunlap iscsit_global.global_dbuf_store = dbuf_store; 654a6d42e7dSPeter Dunlap 655a6d42e7dSPeter Dunlap /* Status PDU cache */ 656a6d42e7dSPeter Dunlap iscsit_status_pdu_cache = kmem_cache_create("iscsit_status_pdu_cache", 657a6d42e7dSPeter Dunlap sizeof (idm_pdu_t) + sizeof (iscsi_scsi_rsp_hdr_t), 8, 658a6d42e7dSPeter Dunlap &iscsit_status_pdu_constructor, 659a6d42e7dSPeter Dunlap NULL, NULL, NULL, NULL, KM_SLEEP); 660a6d42e7dSPeter Dunlap 661a6d42e7dSPeter Dunlap /* Default TPG and portal */ 662a6d42e7dSPeter Dunlap iscsit_global.global_default_tpg = iscsit_tpg_createdefault(); 663a6d42e7dSPeter Dunlap if (iscsit_global.global_default_tpg == NULL) { 664a6d42e7dSPeter Dunlap retval = IDM_STATUS_FAIL; 665a6d42e7dSPeter Dunlap goto tear_down_and_return; 666a6d42e7dSPeter Dunlap } 667a6d42e7dSPeter Dunlap 668a6d42e7dSPeter Dunlap /* initialize isns client */ 669a6d42e7dSPeter Dunlap (void) iscsit_isns_init(hostinfo); 670a6d42e7dSPeter Dunlap did_iscsit_isns_init = B_TRUE; 671a6d42e7dSPeter Dunlap 672a6d42e7dSPeter Dunlap /* Register port provider */ 673a6d42e7dSPeter Dunlap pp = stmf_alloc(STMF_STRUCT_PORT_PROVIDER, 0, 0); 674a6d42e7dSPeter Dunlap if (pp == NULL) { 675a6d42e7dSPeter Dunlap retval = IDM_STATUS_FAIL; 676a6d42e7dSPeter Dunlap goto tear_down_and_return; 677a6d42e7dSPeter Dunlap } 678a6d42e7dSPeter Dunlap 679a6d42e7dSPeter Dunlap pp->pp_portif_rev = PORTIF_REV_1; 680a6d42e7dSPeter Dunlap pp->pp_instance = 0; 681a6d42e7dSPeter Dunlap pp->pp_name = ISCSIT_MODNAME; 682a6d42e7dSPeter Dunlap pp->pp_cb = iscsit_pp_cb; 683a6d42e7dSPeter Dunlap 684a6d42e7dSPeter Dunlap iscsit_global.global_pp = pp; 685a6d42e7dSPeter Dunlap 686a6d42e7dSPeter Dunlap 687a6d42e7dSPeter Dunlap if (stmf_register_port_provider(pp) != STMF_SUCCESS) { 688a6d42e7dSPeter Dunlap retval = IDM_STATUS_FAIL; 689a6d42e7dSPeter Dunlap goto tear_down_and_return; 690a6d42e7dSPeter Dunlap } 691a6d42e7dSPeter Dunlap 692a6d42e7dSPeter Dunlap iscsit_global.global_dispatch_taskq = taskq_create("iscsit_dispatch", 693a6d42e7dSPeter Dunlap 1, minclsyspri, 16, 16, TASKQ_PREPOPULATE); 694a6d42e7dSPeter Dunlap 695a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 696a6d42e7dSPeter Dunlap 697a6d42e7dSPeter Dunlap tear_down_and_return: 698a6d42e7dSPeter Dunlap 699a6d42e7dSPeter Dunlap if (iscsit_global.global_dispatch_taskq) { 700a6d42e7dSPeter Dunlap taskq_destroy(iscsit_global.global_dispatch_taskq); 701a6d42e7dSPeter Dunlap iscsit_global.global_dispatch_taskq = NULL; 702a6d42e7dSPeter Dunlap } 703a6d42e7dSPeter Dunlap 704a6d42e7dSPeter Dunlap if (did_iscsit_isns_init) 705a6d42e7dSPeter Dunlap iscsit_isns_fini(); 706a6d42e7dSPeter Dunlap 707a6d42e7dSPeter Dunlap if (iscsit_global.global_default_tpg) { 708a6d42e7dSPeter Dunlap iscsit_tpg_destroydefault(iscsit_global.global_default_tpg); 709a6d42e7dSPeter Dunlap iscsit_global.global_default_tpg = NULL; 710a6d42e7dSPeter Dunlap } 711a6d42e7dSPeter Dunlap 712a6d42e7dSPeter Dunlap if (iscsit_global.global_pp) 713a6d42e7dSPeter Dunlap iscsit_global.global_pp = NULL; 714a6d42e7dSPeter Dunlap 715a6d42e7dSPeter Dunlap if (pp) 716a6d42e7dSPeter Dunlap stmf_free(pp); 717a6d42e7dSPeter Dunlap 718a6d42e7dSPeter Dunlap if (iscsit_status_pdu_cache) { 719a6d42e7dSPeter Dunlap kmem_cache_destroy(iscsit_status_pdu_cache); 720a6d42e7dSPeter Dunlap iscsit_status_pdu_cache = NULL; 721a6d42e7dSPeter Dunlap } 722a6d42e7dSPeter Dunlap 723a6d42e7dSPeter Dunlap if (iscsit_global.global_dbuf_store) { 724a6d42e7dSPeter Dunlap stmf_free(iscsit_global.global_dbuf_store); 725a6d42e7dSPeter Dunlap iscsit_global.global_dbuf_store = NULL; 726a6d42e7dSPeter Dunlap } 727a6d42e7dSPeter Dunlap 728a6d42e7dSPeter Dunlap if (iscsit_global.global_tsih_pool) { 729a6d42e7dSPeter Dunlap vmem_destroy(iscsit_global.global_tsih_pool); 730a6d42e7dSPeter Dunlap iscsit_global.global_tsih_pool = NULL; 731a6d42e7dSPeter Dunlap } 732a6d42e7dSPeter Dunlap 733a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_ini_list); 734a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_tpg_list); 735a6d42e7dSPeter Dunlap list_destroy(&iscsit_global.global_deleted_target_list); 736a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_target_list); 737a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_discovery_sessions); 738a6d42e7dSPeter Dunlap 739a6d42e7dSPeter Dunlap idm_refcnt_destroy(&iscsit_global.global_refcnt); 740a6d42e7dSPeter Dunlap 741a6d42e7dSPeter Dunlap return (retval); 742a6d42e7dSPeter Dunlap } 743a6d42e7dSPeter Dunlap 744a6d42e7dSPeter Dunlap /* 745a6d42e7dSPeter Dunlap * iscsit_disable_svc 746a6d42e7dSPeter Dunlap * 747a6d42e7dSPeter Dunlap * clean up all existing connections and deregister targets from STMF 748a6d42e7dSPeter Dunlap */ 749a6d42e7dSPeter Dunlap static void 750a6d42e7dSPeter Dunlap iscsit_disable_svc(void) 751a6d42e7dSPeter Dunlap { 752a6d42e7dSPeter Dunlap iscsit_sess_t *sess; 753a6d42e7dSPeter Dunlap 754a6d42e7dSPeter Dunlap ASSERT(iscsit_global.global_svc_state == ISE_DISABLING); 755a6d42e7dSPeter Dunlap 756a6d42e7dSPeter Dunlap /* tear down discovery sessions */ 757a6d42e7dSPeter Dunlap for (sess = avl_first(&iscsit_global.global_discovery_sessions); 758a6d42e7dSPeter Dunlap sess != NULL; 759a6d42e7dSPeter Dunlap sess = AVL_NEXT(&iscsit_global.global_discovery_sessions, sess)) 760a6d42e7dSPeter Dunlap iscsit_sess_close(sess); 761a6d42e7dSPeter Dunlap 762a6d42e7dSPeter Dunlap /* 763a6d42e7dSPeter Dunlap * Passing NULL to iscsit_config_merge tells it to go to an empty 764a6d42e7dSPeter Dunlap * config. 765a6d42e7dSPeter Dunlap */ 766a6d42e7dSPeter Dunlap (void) iscsit_config_merge(NULL); 767a6d42e7dSPeter Dunlap 768a6d42e7dSPeter Dunlap /* 769a6d42e7dSPeter Dunlap * Wait until there are no more global references 770a6d42e7dSPeter Dunlap */ 771a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(&iscsit_global.global_refcnt); 772a6d42e7dSPeter Dunlap idm_refcnt_destroy(&iscsit_global.global_refcnt); 773a6d42e7dSPeter Dunlap 774a6d42e7dSPeter Dunlap /* 775a6d42e7dSPeter Dunlap * Default TPG must be destroyed after global_refcnt is 0. 776a6d42e7dSPeter Dunlap */ 777a6d42e7dSPeter Dunlap iscsit_tpg_destroydefault(iscsit_global.global_default_tpg); 778a6d42e7dSPeter Dunlap 779a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_discovery_sessions); 780a6d42e7dSPeter Dunlap list_destroy(&iscsit_global.global_deleted_target_list); 781a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_target_list); 782a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_tpg_list); 783a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_ini_list); 784a6d42e7dSPeter Dunlap 785a6d42e7dSPeter Dunlap taskq_destroy(iscsit_global.global_dispatch_taskq); 786a6d42e7dSPeter Dunlap 787a6d42e7dSPeter Dunlap iscsit_isns_fini(); 788a6d42e7dSPeter Dunlap 789a6d42e7dSPeter Dunlap stmf_free(iscsit_global.global_dbuf_store); 790a6d42e7dSPeter Dunlap iscsit_global.global_dbuf_store = NULL; 791a6d42e7dSPeter Dunlap 792a6d42e7dSPeter Dunlap (void) stmf_deregister_port_provider(iscsit_global.global_pp); 793a6d42e7dSPeter Dunlap stmf_free(iscsit_global.global_pp); 794a6d42e7dSPeter Dunlap iscsit_global.global_pp = NULL; 795a6d42e7dSPeter Dunlap 796a6d42e7dSPeter Dunlap kmem_cache_destroy(iscsit_status_pdu_cache); 797a6d42e7dSPeter Dunlap iscsit_status_pdu_cache = NULL; 798a6d42e7dSPeter Dunlap 799a6d42e7dSPeter Dunlap vmem_destroy(iscsit_global.global_tsih_pool); 800a6d42e7dSPeter Dunlap iscsit_global.global_tsih_pool = NULL; 801a6d42e7dSPeter Dunlap } 802a6d42e7dSPeter Dunlap 803a6d42e7dSPeter Dunlap void 804a6d42e7dSPeter Dunlap iscsit_global_hold() 805a6d42e7dSPeter Dunlap { 806*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States /* 807*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * To take out a global hold, we must either own the global 808*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * state mutex or we must be running inside of an ioctl that 809*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * has set the global state to ISE_BUSY, ISE_DISABLING, or 810*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * ISE_ENABLING. We don't track the "owner" for these flags, 811*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * so just checking if they are set is enough for now. 812*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States */ 813*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States ASSERT((iscsit_global.global_svc_state == ISE_ENABLING) || 814*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States (iscsit_global.global_svc_state == ISE_DISABLING) || 815*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States (iscsit_global.global_svc_state == ISE_BUSY) || 816*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States MUTEX_HELD(&iscsit_global.global_state_mutex)); 817*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States 818a6d42e7dSPeter Dunlap idm_refcnt_hold(&iscsit_global.global_refcnt); 819a6d42e7dSPeter Dunlap } 820a6d42e7dSPeter Dunlap 821a6d42e7dSPeter Dunlap void 822a6d42e7dSPeter Dunlap iscsit_global_rele() 823a6d42e7dSPeter Dunlap { 824a6d42e7dSPeter Dunlap idm_refcnt_rele(&iscsit_global.global_refcnt); 825a6d42e7dSPeter Dunlap } 826a6d42e7dSPeter Dunlap 827a6d42e7dSPeter Dunlap void 828a6d42e7dSPeter Dunlap iscsit_global_wait_ref() 829a6d42e7dSPeter Dunlap { 830a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(&iscsit_global.global_refcnt); 831a6d42e7dSPeter Dunlap } 832a6d42e7dSPeter Dunlap 833a6d42e7dSPeter Dunlap /* 834a6d42e7dSPeter Dunlap * IDM callbacks 835a6d42e7dSPeter Dunlap */ 836a6d42e7dSPeter Dunlap 837a6d42e7dSPeter Dunlap /*ARGSUSED*/ 838a6d42e7dSPeter Dunlap void 839a6d42e7dSPeter Dunlap iscsit_rx_pdu(idm_conn_t *ic, idm_pdu_t *rx_pdu) 840a6d42e7dSPeter Dunlap { 841a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 842a6d42e7dSPeter Dunlap switch (IDM_PDU_OPCODE(rx_pdu)) { 843a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_CMD: 844a6d42e7dSPeter Dunlap ASSERT(0); /* Shouldn't happen */ 845a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 846a6d42e7dSPeter Dunlap break; 847a6d42e7dSPeter Dunlap case ISCSI_OP_SNACK_CMD: 848a6d42e7dSPeter Dunlap /* 849a6d42e7dSPeter Dunlap * We'll need to handle this when we support ERL1/2. For 850a6d42e7dSPeter Dunlap * now we treat it as a protocol error. 851a6d42e7dSPeter Dunlap */ 852a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 853a6d42e7dSPeter Dunlap idm_conn_event(ic, CE_TRANSPORT_FAIL, NULL); 854a6d42e7dSPeter Dunlap break; 855a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_TASK_MGT_MSG: 856a6d42e7dSPeter Dunlap iscsit_set_cmdsn(ict, rx_pdu); 857a6d42e7dSPeter Dunlap iscsit_op_scsi_task_mgmt(ict, rx_pdu); 858a6d42e7dSPeter Dunlap break; 859a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_OUT: 860a6d42e7dSPeter Dunlap case ISCSI_OP_LOGIN_CMD: 861a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_CMD: 862a6d42e7dSPeter Dunlap case ISCSI_OP_LOGOUT_CMD: 863a6d42e7dSPeter Dunlap /* 864a6d42e7dSPeter Dunlap * If/when we switch to userland processing these PDU's 865a6d42e7dSPeter Dunlap * will be handled by iscsitd. 866a6d42e7dSPeter Dunlap */ 867a6d42e7dSPeter Dunlap iscsit_deferred_dispatch(rx_pdu); 868a6d42e7dSPeter Dunlap break; 869a6d42e7dSPeter Dunlap default: 870a6d42e7dSPeter Dunlap /* Protocol error */ 871a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 872a6d42e7dSPeter Dunlap idm_conn_event(ic, CE_TRANSPORT_FAIL, NULL); 873a6d42e7dSPeter Dunlap break; 874a6d42e7dSPeter Dunlap } 875a6d42e7dSPeter Dunlap } 876a6d42e7dSPeter Dunlap 877a6d42e7dSPeter Dunlap /*ARGSUSED*/ 878a6d42e7dSPeter Dunlap void 879a6d42e7dSPeter Dunlap iscsit_rx_pdu_error(idm_conn_t *ic, idm_pdu_t *rx_pdu, idm_status_t status) 880a6d42e7dSPeter Dunlap { 881a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 882a6d42e7dSPeter Dunlap } 883a6d42e7dSPeter Dunlap 884a6d42e7dSPeter Dunlap void 885a6d42e7dSPeter Dunlap iscsit_task_aborted(idm_task_t *idt, idm_status_t status) 886a6d42e7dSPeter Dunlap { 887a6d42e7dSPeter Dunlap iscsit_task_t *itask = idt->idt_private; 888a6d42e7dSPeter Dunlap 889a6d42e7dSPeter Dunlap switch (status) { 890a6d42e7dSPeter Dunlap case IDM_STATUS_SUSPENDED: 891a6d42e7dSPeter Dunlap break; 892a6d42e7dSPeter Dunlap case IDM_STATUS_ABORTED: 893a6d42e7dSPeter Dunlap mutex_enter(&itask->it_mutex); 894a6d42e7dSPeter Dunlap itask->it_aborted = B_TRUE; 895bf604c64SPeter Dunlap /* 896bf604c64SPeter Dunlap * We rely on the fact that STMF tracks outstanding 897bf604c64SPeter Dunlap * buffer transfers and will free all of our buffers 898bf604c64SPeter Dunlap * before freeing the task so we don't need to 899bf604c64SPeter Dunlap * explicitly free the buffers from iscsit/idm 900bf604c64SPeter Dunlap */ 901a6d42e7dSPeter Dunlap if (itask->it_stmf_abort) { 902a6d42e7dSPeter Dunlap mutex_exit(&itask->it_mutex); 90372cf3143Speter dunlap /* 90472cf3143Speter dunlap * Task is no longer active 90572cf3143Speter dunlap */ 90672cf3143Speter dunlap iscsit_task_done(itask); 90772cf3143Speter dunlap 908a6d42e7dSPeter Dunlap /* 909bf604c64SPeter Dunlap * STMF has already asked for this task to be aborted 910bf604c64SPeter Dunlap * 911a6d42e7dSPeter Dunlap * STMF specification is wrong... says to return 912a6d42e7dSPeter Dunlap * STMF_ABORTED, the code actually looks for 913a6d42e7dSPeter Dunlap * STMF_ABORT_SUCCESS. 914a6d42e7dSPeter Dunlap */ 915a6d42e7dSPeter Dunlap stmf_task_lport_aborted(itask->it_stmf_task, 916a6d42e7dSPeter Dunlap STMF_ABORT_SUCCESS, STMF_IOF_LPORT_DONE); 917a6d42e7dSPeter Dunlap return; 918a6d42e7dSPeter Dunlap } else { 919a6d42e7dSPeter Dunlap mutex_exit(&itask->it_mutex); 920a6d42e7dSPeter Dunlap /* 921bf604c64SPeter Dunlap * Tell STMF to stop processing the task. 922a6d42e7dSPeter Dunlap */ 923a6d42e7dSPeter Dunlap stmf_abort(STMF_QUEUE_TASK_ABORT, itask->it_stmf_task, 924a6d42e7dSPeter Dunlap STMF_ABORTED, NULL); 925a6d42e7dSPeter Dunlap return; 926a6d42e7dSPeter Dunlap } 927a6d42e7dSPeter Dunlap /*NOTREACHED*/ 928a6d42e7dSPeter Dunlap default: 929a6d42e7dSPeter Dunlap ASSERT(0); 930a6d42e7dSPeter Dunlap } 931a6d42e7dSPeter Dunlap } 932a6d42e7dSPeter Dunlap 933a6d42e7dSPeter Dunlap /*ARGSUSED*/ 934a6d42e7dSPeter Dunlap idm_status_t 935a6d42e7dSPeter Dunlap iscsit_client_notify(idm_conn_t *ic, idm_client_notify_t icn, 936a6d42e7dSPeter Dunlap uintptr_t data) 937a6d42e7dSPeter Dunlap { 938a6d42e7dSPeter Dunlap idm_status_t rc = IDM_STATUS_SUCCESS; 939a6d42e7dSPeter Dunlap 940a6d42e7dSPeter Dunlap /* 941a6d42e7dSPeter Dunlap * IDM client notifications will never occur at interrupt level 942a6d42e7dSPeter Dunlap * since they are generated from the connection state machine which 943a6d42e7dSPeter Dunlap * running on taskq threads. 944a6d42e7dSPeter Dunlap * 945a6d42e7dSPeter Dunlap */ 946a6d42e7dSPeter Dunlap switch (icn) { 947a6d42e7dSPeter Dunlap case CN_CONNECT_ACCEPT: 948a6d42e7dSPeter Dunlap rc = iscsit_conn_accept(ic); /* No data */ 949a6d42e7dSPeter Dunlap break; 950a6d42e7dSPeter Dunlap case CN_FFP_ENABLED: 951a6d42e7dSPeter Dunlap rc = iscsit_ffp_enabled(ic); /* No data */ 952a6d42e7dSPeter Dunlap break; 953a6d42e7dSPeter Dunlap case CN_FFP_DISABLED: 954a6d42e7dSPeter Dunlap /* 955a6d42e7dSPeter Dunlap * Data indicates whether this was the result of an 956a6d42e7dSPeter Dunlap * explicit logout request. 957a6d42e7dSPeter Dunlap */ 958a6d42e7dSPeter Dunlap rc = iscsit_ffp_disabled(ic, (idm_ffp_disable_t)data); 959a6d42e7dSPeter Dunlap break; 960a6d42e7dSPeter Dunlap case CN_CONNECT_LOST: 961a6d42e7dSPeter Dunlap rc = iscsit_conn_lost(ic); 962a6d42e7dSPeter Dunlap break; 963a6d42e7dSPeter Dunlap case CN_CONNECT_DESTROY: 964a6d42e7dSPeter Dunlap rc = iscsit_conn_destroy(ic); 965a6d42e7dSPeter Dunlap break; 966a6d42e7dSPeter Dunlap case CN_LOGIN_FAIL: 967a6d42e7dSPeter Dunlap /* 968a6d42e7dSPeter Dunlap * Force the login state machine to completion 969a6d42e7dSPeter Dunlap */ 970a6d42e7dSPeter Dunlap rc = iscsit_login_fail(ic); 971a6d42e7dSPeter Dunlap break; 972a6d42e7dSPeter Dunlap default: 973a6d42e7dSPeter Dunlap rc = IDM_STATUS_REJECT; 974a6d42e7dSPeter Dunlap break; 975a6d42e7dSPeter Dunlap } 976a6d42e7dSPeter Dunlap 977a6d42e7dSPeter Dunlap return (rc); 978a6d42e7dSPeter Dunlap } 979a6d42e7dSPeter Dunlap 98060220f10SPriya Krishnan /* 98160220f10SPriya Krishnan * iscsit_update_statsn is invoked for all the PDUs which have the StatSN 98260220f10SPriya Krishnan * field in the header. The StatSN is incremented if the IDM_PDU_ADVANCE_STATSN 98360220f10SPriya Krishnan * flag is set in the pdu flags field. The StatSN is connection-wide and is 98460220f10SPriya Krishnan * protected by the mutex ict_statsn_mutex. For Data-In PDUs, if the flag 98560220f10SPriya Krishnan * IDM_TASK_PHASECOLLAPSE_REQ is set, the status (phase-collapse) is also filled 98660220f10SPriya Krishnan */ 98760220f10SPriya Krishnan void 98860220f10SPriya Krishnan iscsit_update_statsn(idm_task_t *idm_task, idm_pdu_t *pdu) 98960220f10SPriya Krishnan { 99060220f10SPriya Krishnan iscsi_scsi_rsp_hdr_t *rsp = (iscsi_scsi_rsp_hdr_t *)pdu->isp_hdr; 99160220f10SPriya Krishnan iscsit_conn_t *ict = (iscsit_conn_t *)pdu->isp_ic->ic_handle; 99260220f10SPriya Krishnan iscsit_task_t *itask = NULL; 99360220f10SPriya Krishnan scsi_task_t *task = NULL; 99460220f10SPriya Krishnan 99560220f10SPriya Krishnan mutex_enter(&ict->ict_statsn_mutex); 99660220f10SPriya Krishnan rsp->statsn = htonl(ict->ict_statsn); 99760220f10SPriya Krishnan if (pdu->isp_flags & IDM_PDU_ADVANCE_STATSN) 99860220f10SPriya Krishnan ict->ict_statsn++; 99960220f10SPriya Krishnan mutex_exit(&ict->ict_statsn_mutex); 100060220f10SPriya Krishnan 100160220f10SPriya Krishnan /* 100260220f10SPriya Krishnan * The last SCSI Data PDU passed for a command may also contain the 100360220f10SPriya Krishnan * status if the status indicates termination with no expections, i.e. 100460220f10SPriya Krishnan * no sense data or response involved. If the command completes with 100560220f10SPriya Krishnan * an error, then the response and sense data will be sent in a 100660220f10SPriya Krishnan * separate iSCSI Response PDU. 100760220f10SPriya Krishnan */ 100860220f10SPriya Krishnan if ((idm_task) && (idm_task->idt_flags & IDM_TASK_PHASECOLLAPSE_REQ)) { 100960220f10SPriya Krishnan itask = idm_task->idt_private; 101060220f10SPriya Krishnan task = itask->it_stmf_task; 101160220f10SPriya Krishnan 101260220f10SPriya Krishnan rsp->cmd_status = task->task_scsi_status; 101360220f10SPriya Krishnan rsp->flags |= ISCSI_FLAG_DATA_STATUS; 101460220f10SPriya Krishnan if (task->task_status_ctrl & TASK_SCTRL_OVER) { 101560220f10SPriya Krishnan rsp->flags |= ISCSI_FLAG_CMD_OVERFLOW; 101660220f10SPriya Krishnan } else if (task->task_status_ctrl & TASK_SCTRL_UNDER) { 101760220f10SPriya Krishnan rsp->flags |= ISCSI_FLAG_CMD_UNDERFLOW; 101860220f10SPriya Krishnan } 101960220f10SPriya Krishnan rsp->residual_count = htonl(task->task_resid); 102060220f10SPriya Krishnan } 102160220f10SPriya Krishnan } 1022a6d42e7dSPeter Dunlap 1023a6d42e7dSPeter Dunlap void 1024a6d42e7dSPeter Dunlap iscsit_build_hdr(idm_task_t *idm_task, idm_pdu_t *pdu, uint8_t opcode) 1025a6d42e7dSPeter Dunlap { 1026a6d42e7dSPeter Dunlap iscsit_task_t *itask = idm_task->idt_private; 1027a6d42e7dSPeter Dunlap iscsi_data_rsp_hdr_t *dh = (iscsi_data_rsp_hdr_t *)pdu->isp_hdr; 1028a6d42e7dSPeter Dunlap 1029a6d42e7dSPeter Dunlap /* 1030a6d42e7dSPeter Dunlap * We acquired iscsit_sess_t.ist_sn_rwlock in iscsit_xfer_scsi_data 1031a6d42e7dSPeter Dunlap * in reader mode so we expect to be locked here 1032a6d42e7dSPeter Dunlap */ 1033a6d42e7dSPeter Dunlap 1034a6d42e7dSPeter Dunlap /* 1035a6d42e7dSPeter Dunlap * Lun is only required if the opcode == ISCSI_OP_SCSI_DATA_RSP 1036a6d42e7dSPeter Dunlap * and the 'A' bit is to be set 1037a6d42e7dSPeter Dunlap */ 1038a6d42e7dSPeter Dunlap dh->opcode = opcode; 1039a6d42e7dSPeter Dunlap dh->itt = itask->it_itt; 1040a6d42e7dSPeter Dunlap dh->ttt = itask->it_ttt; 10411050fd6dSJames Moore /* Maintain current statsn for RTT responses */ 10421050fd6dSJames Moore dh->statsn = (opcode == ISCSI_OP_RTT_RSP) ? 10431050fd6dSJames Moore htonl(itask->it_ict->ict_statsn) : 0; 104460220f10SPriya Krishnan 1045a6d42e7dSPeter Dunlap dh->expcmdsn = htonl(itask->it_ict->ict_sess->ist_expcmdsn); 1046a6d42e7dSPeter Dunlap dh->maxcmdsn = htonl(itask->it_ict->ict_sess->ist_maxcmdsn); 1047a6d42e7dSPeter Dunlap 1048a6d42e7dSPeter Dunlap /* 1049a6d42e7dSPeter Dunlap * IDM must set: 1050a6d42e7dSPeter Dunlap * 1051a6d42e7dSPeter Dunlap * data.flags and rtt.flags 1052a6d42e7dSPeter Dunlap * data.dlength 1053a6d42e7dSPeter Dunlap * data.datasn 1054a6d42e7dSPeter Dunlap * data.offset 105560220f10SPriya Krishnan * statsn, residual_count and cmd_status (for phase collapse) 1056a6d42e7dSPeter Dunlap * rtt.rttsn 1057a6d42e7dSPeter Dunlap * rtt.data_offset 1058a6d42e7dSPeter Dunlap * rtt.data_length 1059a6d42e7dSPeter Dunlap */ 1060a6d42e7dSPeter Dunlap } 1061a6d42e7dSPeter Dunlap 106272cf3143Speter dunlap void 106372cf3143Speter dunlap iscsit_keepalive(idm_conn_t *ic) 106472cf3143Speter dunlap { 106572cf3143Speter dunlap idm_pdu_t *nop_in_pdu; 106672cf3143Speter dunlap iscsi_nop_in_hdr_t *nop_in; 106772cf3143Speter dunlap iscsit_conn_t *ict = ic->ic_handle; 106872cf3143Speter dunlap 106972cf3143Speter dunlap /* 107072cf3143Speter dunlap * IDM noticed the connection has been idle for too long so it's 107172cf3143Speter dunlap * time to provoke some activity. Build and transmit an iSCSI 107272cf3143Speter dunlap * nop-in PDU -- when the initiator responds it will be counted 107372cf3143Speter dunlap * as "activity" and keep the connection alive. 107472cf3143Speter dunlap * 107572cf3143Speter dunlap * We don't actually care about the response here at the iscsit level 107672cf3143Speter dunlap * so we will just throw it away without looking at it when it arrives. 107772cf3143Speter dunlap */ 107872cf3143Speter dunlap nop_in_pdu = idm_pdu_alloc(sizeof (*nop_in), 0); 107972cf3143Speter dunlap idm_pdu_init(nop_in_pdu, ic, NULL, NULL); 108072cf3143Speter dunlap nop_in = (iscsi_nop_in_hdr_t *)nop_in_pdu->isp_hdr; 108172cf3143Speter dunlap bzero(nop_in, sizeof (*nop_in)); 108272cf3143Speter dunlap nop_in->opcode = ISCSI_OP_NOOP_IN; 108372cf3143Speter dunlap nop_in->flags = ISCSI_FLAG_FINAL; 108472cf3143Speter dunlap nop_in->itt = ISCSI_RSVD_TASK_TAG; 108560220f10SPriya Krishnan /* 108660220f10SPriya Krishnan * When the target sends a NOP-In as a Ping, the target transfer tag 108760220f10SPriya Krishnan * is set to a valid (not reserved) value and the initiator task tag 108860220f10SPriya Krishnan * is set to ISCSI_RSVD_TASK_TAG (0xffffffff). In this case the StatSN 108960220f10SPriya Krishnan * will always contain the next sequence number but the StatSN for the 109060220f10SPriya Krishnan * connection is not advanced after this PDU is sent. 109160220f10SPriya Krishnan */ 109260220f10SPriya Krishnan nop_in_pdu->isp_flags |= IDM_PDU_SET_STATSN; 109372cf3143Speter dunlap /* 109472cf3143Speter dunlap * This works because we don't currently allocate ttt's anywhere else 109572cf3143Speter dunlap * in iscsit so as long as we stay out of IDM's range we are safe. 109672cf3143Speter dunlap * If we need to allocate ttt's for other PDU's in the future this will 109772cf3143Speter dunlap * need to be improved. 109872cf3143Speter dunlap */ 109972cf3143Speter dunlap mutex_enter(&ict->ict_mutex); 110072cf3143Speter dunlap nop_in->ttt = ict->ict_keepalive_ttt; 110172cf3143Speter dunlap ict->ict_keepalive_ttt++; 110272cf3143Speter dunlap if (ict->ict_keepalive_ttt == ISCSI_RSVD_TASK_TAG) 110372cf3143Speter dunlap ict->ict_keepalive_ttt = IDM_TASKIDS_MAX; 110472cf3143Speter dunlap mutex_exit(&ict->ict_mutex); 110572cf3143Speter dunlap 110672cf3143Speter dunlap iscsit_pdu_tx(nop_in_pdu); 110772cf3143Speter dunlap } 110872cf3143Speter dunlap 1109a6d42e7dSPeter Dunlap static idm_status_t 1110a6d42e7dSPeter Dunlap iscsit_conn_accept(idm_conn_t *ic) 1111a6d42e7dSPeter Dunlap { 1112a6d42e7dSPeter Dunlap iscsit_conn_t *ict; 1113a6d42e7dSPeter Dunlap 111430e7468fSPeter Dunlap /* 111530e7468fSPeter Dunlap * We need to get a global hold here to ensure that the service 111630e7468fSPeter Dunlap * doesn't get shutdown prior to establishing a session. This 111730e7468fSPeter Dunlap * gets released in iscsit_conn_destroy(). 111830e7468fSPeter Dunlap */ 1119*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_enter(&iscsit_global.global_state_mutex); 1120e42a0851Speter dunlap if (iscsit_global.global_svc_state != ISE_ENABLED) { 1121*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 1122e42a0851Speter dunlap return (IDM_STATUS_FAIL); 1123e42a0851Speter dunlap } 112430e7468fSPeter Dunlap iscsit_global_hold(); 1125*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 112630e7468fSPeter Dunlap 1127a6d42e7dSPeter Dunlap /* 1128a6d42e7dSPeter Dunlap * Allocate an associated iscsit structure to represent this 1129a6d42e7dSPeter Dunlap * connection. We shouldn't really create a session until we 1130a6d42e7dSPeter Dunlap * get the first login PDU. 1131a6d42e7dSPeter Dunlap */ 1132a6d42e7dSPeter Dunlap ict = kmem_zalloc(sizeof (*ict), KM_SLEEP); 1133a6d42e7dSPeter Dunlap 1134a6d42e7dSPeter Dunlap ict->ict_ic = ic; 1135a6d42e7dSPeter Dunlap ict->ict_statsn = 1; 113672cf3143Speter dunlap ict->ict_keepalive_ttt = IDM_TASKIDS_MAX; /* Avoid IDM TT range */ 1137a6d42e7dSPeter Dunlap ic->ic_handle = ict; 1138a6d42e7dSPeter Dunlap mutex_init(&ict->ict_mutex, NULL, MUTEX_DRIVER, NULL); 113960220f10SPriya Krishnan mutex_init(&ict->ict_statsn_mutex, NULL, MUTEX_DRIVER, NULL); 1140a6d42e7dSPeter Dunlap idm_refcnt_init(&ict->ict_refcnt, ict); 1141a6d42e7dSPeter Dunlap 1142a6d42e7dSPeter Dunlap /* 1143a6d42e7dSPeter Dunlap * Initialize login state machine 1144a6d42e7dSPeter Dunlap */ 1145a6d42e7dSPeter Dunlap if (iscsit_login_sm_init(ict) != IDM_STATUS_SUCCESS) { 1146e42a0851Speter dunlap iscsit_global_rele(); 11474142b486SJames Moore /* 11484142b486SJames Moore * Cleanup the ict after idm notifies us about this failure 11494142b486SJames Moore */ 1150a6d42e7dSPeter Dunlap return (IDM_STATUS_FAIL); 1151a6d42e7dSPeter Dunlap } 1152a6d42e7dSPeter Dunlap 1153a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1154a6d42e7dSPeter Dunlap } 1155a6d42e7dSPeter Dunlap 1156a6d42e7dSPeter Dunlap idm_status_t 1157a6d42e7dSPeter Dunlap iscsit_conn_reinstate(iscsit_conn_t *reinstate_ict, iscsit_conn_t *new_ict) 1158a6d42e7dSPeter Dunlap { 1159a6d42e7dSPeter Dunlap idm_status_t result; 1160a6d42e7dSPeter Dunlap 1161a6d42e7dSPeter Dunlap /* 1162a6d42e7dSPeter Dunlap * Note in new connection state that this connection is 1163a6d42e7dSPeter Dunlap * reinstating an existing connection. 1164a6d42e7dSPeter Dunlap */ 1165a6d42e7dSPeter Dunlap new_ict->ict_reinstating = B_TRUE; 1166a6d42e7dSPeter Dunlap new_ict->ict_reinstate_conn = reinstate_ict; 1167a6d42e7dSPeter Dunlap new_ict->ict_statsn = reinstate_ict->ict_statsn; 1168a6d42e7dSPeter Dunlap 1169a6d42e7dSPeter Dunlap /* 1170a6d42e7dSPeter Dunlap * Now generate connection state machine event to existing connection 1171a6d42e7dSPeter Dunlap * so that it starts the cleanup process. 1172a6d42e7dSPeter Dunlap */ 1173a6d42e7dSPeter Dunlap result = idm_conn_reinstate_event(reinstate_ict->ict_ic, 1174a6d42e7dSPeter Dunlap new_ict->ict_ic); 1175a6d42e7dSPeter Dunlap 1176a6d42e7dSPeter Dunlap return (result); 1177a6d42e7dSPeter Dunlap } 1178a6d42e7dSPeter Dunlap 1179a6d42e7dSPeter Dunlap void 1180a6d42e7dSPeter Dunlap iscsit_conn_hold(iscsit_conn_t *ict) 1181a6d42e7dSPeter Dunlap { 1182a6d42e7dSPeter Dunlap idm_refcnt_hold(&ict->ict_refcnt); 1183a6d42e7dSPeter Dunlap } 1184a6d42e7dSPeter Dunlap 1185a6d42e7dSPeter Dunlap void 1186a6d42e7dSPeter Dunlap iscsit_conn_rele(iscsit_conn_t *ict) 1187a6d42e7dSPeter Dunlap { 1188a6d42e7dSPeter Dunlap idm_refcnt_rele(&ict->ict_refcnt); 1189a6d42e7dSPeter Dunlap } 1190a6d42e7dSPeter Dunlap 1191a6d42e7dSPeter Dunlap void 1192a6d42e7dSPeter Dunlap iscsit_conn_dispatch_hold(iscsit_conn_t *ict) 1193a6d42e7dSPeter Dunlap { 1194a6d42e7dSPeter Dunlap idm_refcnt_hold(&ict->ict_dispatch_refcnt); 1195a6d42e7dSPeter Dunlap } 1196a6d42e7dSPeter Dunlap 1197a6d42e7dSPeter Dunlap void 1198a6d42e7dSPeter Dunlap iscsit_conn_dispatch_rele(iscsit_conn_t *ict) 1199a6d42e7dSPeter Dunlap { 1200a6d42e7dSPeter Dunlap idm_refcnt_rele(&ict->ict_dispatch_refcnt); 1201a6d42e7dSPeter Dunlap } 1202a6d42e7dSPeter Dunlap 1203a6d42e7dSPeter Dunlap static idm_status_t 1204a6d42e7dSPeter Dunlap iscsit_login_fail(idm_conn_t *ic) 1205a6d42e7dSPeter Dunlap { 1206a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 1207a6d42e7dSPeter Dunlap 1208a6d42e7dSPeter Dunlap /* Generate login state machine event */ 1209a6d42e7dSPeter Dunlap iscsit_login_sm_event(ict, ILE_LOGIN_CONN_ERROR, NULL); 1210a6d42e7dSPeter Dunlap 1211a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1212a6d42e7dSPeter Dunlap } 1213a6d42e7dSPeter Dunlap 1214a6d42e7dSPeter Dunlap static idm_status_t 1215a6d42e7dSPeter Dunlap iscsit_ffp_enabled(idm_conn_t *ic) 1216a6d42e7dSPeter Dunlap { 1217a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 1218a6d42e7dSPeter Dunlap 1219a6d42e7dSPeter Dunlap /* Generate session state machine event */ 1220a6d42e7dSPeter Dunlap iscsit_sess_sm_event(ict->ict_sess, SE_CONN_LOGGED_IN, ict); 1221a6d42e7dSPeter Dunlap 1222a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1223a6d42e7dSPeter Dunlap } 1224a6d42e7dSPeter Dunlap 1225a6d42e7dSPeter Dunlap static idm_status_t 1226a6d42e7dSPeter Dunlap iscsit_ffp_disabled(idm_conn_t *ic, idm_ffp_disable_t disable_class) 1227a6d42e7dSPeter Dunlap { 1228a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 1229a6d42e7dSPeter Dunlap 1230a6d42e7dSPeter Dunlap /* Generate session state machine event */ 1231a6d42e7dSPeter Dunlap switch (disable_class) { 1232a6d42e7dSPeter Dunlap case FD_CONN_FAIL: 1233a6d42e7dSPeter Dunlap iscsit_sess_sm_event(ict->ict_sess, SE_CONN_FFP_FAIL, ict); 1234a6d42e7dSPeter Dunlap break; 1235a6d42e7dSPeter Dunlap case FD_CONN_LOGOUT: 1236a6d42e7dSPeter Dunlap iscsit_sess_sm_event(ict->ict_sess, SE_CONN_FFP_DISABLE, ict); 1237a6d42e7dSPeter Dunlap break; 1238a6d42e7dSPeter Dunlap case FD_SESS_LOGOUT: 1239a6d42e7dSPeter Dunlap iscsit_sess_sm_event(ict->ict_sess, SE_SESSION_CLOSE, ict); 1240a6d42e7dSPeter Dunlap break; 1241a6d42e7dSPeter Dunlap default: 1242a6d42e7dSPeter Dunlap ASSERT(0); 1243a6d42e7dSPeter Dunlap } 1244a6d42e7dSPeter Dunlap 1245a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1246a6d42e7dSPeter Dunlap } 1247a6d42e7dSPeter Dunlap 1248a6d42e7dSPeter Dunlap static idm_status_t 1249a6d42e7dSPeter Dunlap iscsit_conn_lost(idm_conn_t *ic) 1250a6d42e7dSPeter Dunlap { 1251a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 1252a6d42e7dSPeter Dunlap 1253a6d42e7dSPeter Dunlap mutex_enter(&ict->ict_mutex); 1254a6d42e7dSPeter Dunlap ict->ict_lost = B_TRUE; 1255a6d42e7dSPeter Dunlap mutex_exit(&ict->ict_mutex); 1256a6d42e7dSPeter Dunlap 1257a6d42e7dSPeter Dunlap /* 1258a6d42e7dSPeter Dunlap * Make sure there aren't any PDU's transitioning from the receive 1259a6d42e7dSPeter Dunlap * handler to the dispatch taskq. 1260a6d42e7dSPeter Dunlap */ 1261a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(&ict->ict_dispatch_refcnt); 1262a6d42e7dSPeter Dunlap 1263a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1264a6d42e7dSPeter Dunlap } 1265a6d42e7dSPeter Dunlap 1266a6d42e7dSPeter Dunlap static idm_status_t 1267a6d42e7dSPeter Dunlap iscsit_conn_destroy(idm_conn_t *ic) 1268a6d42e7dSPeter Dunlap { 1269a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 1270a6d42e7dSPeter Dunlap 1271a6d42e7dSPeter Dunlap mutex_enter(&ict->ict_mutex); 1272a6d42e7dSPeter Dunlap ict->ict_destroyed = B_TRUE; 1273a6d42e7dSPeter Dunlap mutex_exit(&ict->ict_mutex); 1274a6d42e7dSPeter Dunlap 1275a6d42e7dSPeter Dunlap /* Generate session state machine event */ 1276a6d42e7dSPeter Dunlap if (ict->ict_sess != NULL) { 1277a6d42e7dSPeter Dunlap /* 1278a6d42e7dSPeter Dunlap * Session state machine will call iscsit_conn_destroy_done() 1279a6d42e7dSPeter Dunlap * when it has removed references to this connection. 1280a6d42e7dSPeter Dunlap */ 1281a6d42e7dSPeter Dunlap iscsit_sess_sm_event(ict->ict_sess, SE_CONN_FAIL, ict); 1282a6d42e7dSPeter Dunlap } 1283a6d42e7dSPeter Dunlap 1284a6d42e7dSPeter Dunlap ict->ict_ic = NULL; 1285a6d42e7dSPeter Dunlap 1286a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(&ict->ict_refcnt); 1287a6d42e7dSPeter Dunlap 12884142b486SJames Moore /* Reap the login state machine */ 12894142b486SJames Moore iscsit_login_sm_fini(ict); 12904142b486SJames Moore 12914142b486SJames Moore /* Clean up any text command remnants */ 12924142b486SJames Moore iscsit_text_cmd_fini(ict); 12934142b486SJames Moore 1294a6d42e7dSPeter Dunlap mutex_destroy(&ict->ict_mutex); 1295a6d42e7dSPeter Dunlap idm_refcnt_destroy(&ict->ict_refcnt); 1296a6d42e7dSPeter Dunlap kmem_free(ict, sizeof (*ict)); 1297a6d42e7dSPeter Dunlap 129830e7468fSPeter Dunlap iscsit_global_rele(); 129930e7468fSPeter Dunlap 1300a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1301a6d42e7dSPeter Dunlap } 1302a6d42e7dSPeter Dunlap 1303a6d42e7dSPeter Dunlap /* 1304a6d42e7dSPeter Dunlap * STMF-related functions 1305a6d42e7dSPeter Dunlap * 1306a6d42e7dSPeter Dunlap * iSCSI to STMF mapping 1307a6d42e7dSPeter Dunlap * 1308a6d42e7dSPeter Dunlap * Session == ? 1309a6d42e7dSPeter Dunlap * Connection == bound to local port but not itself a local port 1310a6d42e7dSPeter Dunlap * Target 1311a6d42e7dSPeter Dunlap * Target portal (group?) == local port (really but we're not going to do this) 1312a6d42e7dSPeter Dunlap * iscsit needs to map connections to local ports (whatever we decide 1313a6d42e7dSPeter Dunlap * they are) 1314a6d42e7dSPeter Dunlap * Target == ? 1315a6d42e7dSPeter Dunlap */ 1316a6d42e7dSPeter Dunlap 1317a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1318a6d42e7dSPeter Dunlap static stmf_data_buf_t * 1319a6d42e7dSPeter Dunlap iscsit_dbuf_alloc(scsi_task_t *task, uint32_t size, uint32_t *pminsize, 1320a6d42e7dSPeter Dunlap uint32_t flags) 1321a6d42e7dSPeter Dunlap { 1322a6d42e7dSPeter Dunlap iscsit_task_t *itask = task->task_port_private; 1323a6d42e7dSPeter Dunlap idm_buf_t *idm_buffer; 1324a6d42e7dSPeter Dunlap iscsit_buf_t *ibuf; 1325a6d42e7dSPeter Dunlap stmf_data_buf_t *result; 132626ec4a22SPriya Krishnan uint32_t bsize; 1327a6d42e7dSPeter Dunlap 1328a6d42e7dSPeter Dunlap /* 132901c0a610SPriya Krishnan * If the requested size is larger than MaxBurstLength and the 133001c0a610SPriya Krishnan * given pminsize is also larger than MaxBurstLength, then the 133101c0a610SPriya Krishnan * allocation fails (dbuf = NULL) and pminsize is modified to 133201c0a610SPriya Krishnan * be equal to MaxBurstLength. stmf/sbd then should re-invoke 133301c0a610SPriya Krishnan * this function with the corrected values for transfer. 1334a6d42e7dSPeter Dunlap */ 133526ec4a22SPriya Krishnan ASSERT(pminsize); 133601c0a610SPriya Krishnan if (size <= itask->it_ict->ict_op.op_max_burst_length) { 133701c0a610SPriya Krishnan bsize = size; 133801c0a610SPriya Krishnan } else if (*pminsize <= itask->it_ict->ict_op.op_max_burst_length) { 133901c0a610SPriya Krishnan bsize = itask->it_ict->ict_op.op_max_burst_length; 134001c0a610SPriya Krishnan } else { 1341a6d42e7dSPeter Dunlap *pminsize = itask->it_ict->ict_op.op_max_burst_length; 1342a6d42e7dSPeter Dunlap return (NULL); 1343a6d42e7dSPeter Dunlap } 1344a6d42e7dSPeter Dunlap 1345a6d42e7dSPeter Dunlap /* Alloc buffer */ 134626ec4a22SPriya Krishnan idm_buffer = idm_buf_alloc(itask->it_ict->ict_ic, NULL, bsize); 1347a6d42e7dSPeter Dunlap if (idm_buffer != NULL) { 1348a6d42e7dSPeter Dunlap result = stmf_alloc(STMF_STRUCT_DATA_BUF, 1349a6d42e7dSPeter Dunlap sizeof (iscsit_buf_t), 0); 1350a6d42e7dSPeter Dunlap if (result != NULL) { 1351a6d42e7dSPeter Dunlap /* Fill in stmf_data_buf_t */ 1352a6d42e7dSPeter Dunlap ibuf = result->db_port_private; 1353a6d42e7dSPeter Dunlap ibuf->ibuf_idm_buf = idm_buffer; 1354a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf = result; 1355a6d42e7dSPeter Dunlap ibuf->ibuf_is_immed = B_FALSE; 1356a6d42e7dSPeter Dunlap result->db_flags = DB_DONT_CACHE; 135726ec4a22SPriya Krishnan result->db_buf_size = bsize; 135826ec4a22SPriya Krishnan result->db_data_size = bsize; 1359a6d42e7dSPeter Dunlap result->db_sglist_length = 1; 1360a6d42e7dSPeter Dunlap result->db_sglist[0].seg_addr = idm_buffer->idb_buf; 1361a6d42e7dSPeter Dunlap result->db_sglist[0].seg_length = 1362a6d42e7dSPeter Dunlap idm_buffer->idb_buflen; 1363a6d42e7dSPeter Dunlap return (result); 1364a6d42e7dSPeter Dunlap } 1365a6d42e7dSPeter Dunlap 1366a6d42e7dSPeter Dunlap /* Couldn't get the stmf_data_buf_t so free the buffer */ 1367a6d42e7dSPeter Dunlap idm_buf_free(idm_buffer); 1368a6d42e7dSPeter Dunlap } 1369a6d42e7dSPeter Dunlap 1370a6d42e7dSPeter Dunlap return (NULL); 1371a6d42e7dSPeter Dunlap } 1372a6d42e7dSPeter Dunlap 1373a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1374a6d42e7dSPeter Dunlap static void 1375a6d42e7dSPeter Dunlap iscsit_dbuf_free(stmf_dbuf_store_t *ds, stmf_data_buf_t *dbuf) 1376a6d42e7dSPeter Dunlap { 1377a6d42e7dSPeter Dunlap iscsit_buf_t *ibuf = dbuf->db_port_private; 1378a6d42e7dSPeter Dunlap 1379a6d42e7dSPeter Dunlap if (ibuf->ibuf_is_immed) { 1380a6d42e7dSPeter Dunlap /* 1381a6d42e7dSPeter Dunlap * The iscsit_buf_t structure itself will be freed with its 1382a6d42e7dSPeter Dunlap * associated task. Here we just need to free the PDU that 1383a6d42e7dSPeter Dunlap * held the immediate data. 1384a6d42e7dSPeter Dunlap */ 1385a6d42e7dSPeter Dunlap idm_pdu_complete(ibuf->ibuf_immed_data_pdu, IDM_STATUS_SUCCESS); 1386a6d42e7dSPeter Dunlap ibuf->ibuf_immed_data_pdu = 0; 1387a6d42e7dSPeter Dunlap } else { 1388a6d42e7dSPeter Dunlap idm_buf_free(ibuf->ibuf_idm_buf); 1389a6d42e7dSPeter Dunlap stmf_free(dbuf); 1390a6d42e7dSPeter Dunlap } 1391a6d42e7dSPeter Dunlap } 1392a6d42e7dSPeter Dunlap 1393a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1394a6d42e7dSPeter Dunlap stmf_status_t 1395a6d42e7dSPeter Dunlap iscsit_xfer_scsi_data(scsi_task_t *task, stmf_data_buf_t *dbuf, 1396a6d42e7dSPeter Dunlap uint32_t ioflags) 1397a6d42e7dSPeter Dunlap { 1398a6d42e7dSPeter Dunlap iscsit_task_t *iscsit_task = task->task_port_private; 139960220f10SPriya Krishnan iscsit_sess_t *ict_sess = iscsit_task->it_ict->ict_sess; 1400a6d42e7dSPeter Dunlap iscsit_buf_t *ibuf = dbuf->db_port_private; 1401a6d42e7dSPeter Dunlap int idm_rc; 1402a6d42e7dSPeter Dunlap 1403bf604c64SPeter Dunlap /* 1404bf604c64SPeter Dunlap * If we are aborting then we can ignore this request 1405bf604c64SPeter Dunlap */ 1406bf604c64SPeter Dunlap if (iscsit_task->it_stmf_abort) { 1407bf604c64SPeter Dunlap return (STMF_SUCCESS); 1408bf604c64SPeter Dunlap } 1409bf604c64SPeter Dunlap 1410a6d42e7dSPeter Dunlap /* 1411a6d42e7dSPeter Dunlap * If it's not immediate data then start the transfer 1412a6d42e7dSPeter Dunlap */ 1413a6d42e7dSPeter Dunlap ASSERT(ibuf->ibuf_is_immed == B_FALSE); 1414a6d42e7dSPeter Dunlap if (dbuf->db_flags & DB_DIRECTION_TO_RPORT) { 141560220f10SPriya Krishnan /* 141660220f10SPriya Krishnan * The DB_SEND_STATUS_GOOD flag in the STMF data buffer allows 141760220f10SPriya Krishnan * the port provider to phase-collapse, i.e. send the status 141860220f10SPriya Krishnan * along with the final data PDU for the command. The port 141960220f10SPriya Krishnan * provider passes this request to the transport layer by 142060220f10SPriya Krishnan * setting a flag IDM_TASK_PHASECOLLAPSE_REQ in the task. 142160220f10SPriya Krishnan */ 142260220f10SPriya Krishnan if (dbuf->db_flags & DB_SEND_STATUS_GOOD) 142360220f10SPriya Krishnan iscsit_task->it_idm_task->idt_flags |= 142460220f10SPriya Krishnan IDM_TASK_PHASECOLLAPSE_REQ; 1425a6d42e7dSPeter Dunlap /* 1426a6d42e7dSPeter Dunlap * IDM will call iscsit_build_hdr so lock now to serialize 1427a6d42e7dSPeter Dunlap * access to the SN values. We need to lock here to enforce 1428a6d42e7dSPeter Dunlap * lock ordering 1429a6d42e7dSPeter Dunlap */ 143060220f10SPriya Krishnan rw_enter(&ict_sess->ist_sn_rwlock, RW_READER); 1431a6d42e7dSPeter Dunlap idm_rc = idm_buf_tx_to_ini(iscsit_task->it_idm_task, 1432a6d42e7dSPeter Dunlap ibuf->ibuf_idm_buf, dbuf->db_relative_offset, 1433a6d42e7dSPeter Dunlap dbuf->db_data_size, &iscsit_buf_xfer_cb, dbuf); 143460220f10SPriya Krishnan rw_exit(&ict_sess->ist_sn_rwlock); 1435a6d42e7dSPeter Dunlap 1436a6d42e7dSPeter Dunlap return (iscsit_idm_to_stmf(idm_rc)); 1437a6d42e7dSPeter Dunlap } else if (dbuf->db_flags & DB_DIRECTION_FROM_RPORT) { 1438a6d42e7dSPeter Dunlap /* Grab the SN lock (see comment above) */ 143960220f10SPriya Krishnan rw_enter(&ict_sess->ist_sn_rwlock, RW_READER); 1440a6d42e7dSPeter Dunlap idm_rc = idm_buf_rx_from_ini(iscsit_task->it_idm_task, 1441a6d42e7dSPeter Dunlap ibuf->ibuf_idm_buf, dbuf->db_relative_offset, 1442a6d42e7dSPeter Dunlap dbuf->db_data_size, &iscsit_buf_xfer_cb, dbuf); 144360220f10SPriya Krishnan rw_exit(&ict_sess->ist_sn_rwlock); 1444a6d42e7dSPeter Dunlap 1445a6d42e7dSPeter Dunlap return (iscsit_idm_to_stmf(idm_rc)); 1446a6d42e7dSPeter Dunlap } 1447a6d42e7dSPeter Dunlap 1448a6d42e7dSPeter Dunlap /* What are we supposed to do if there is no direction? */ 1449a6d42e7dSPeter Dunlap return (STMF_INVALID_ARG); 1450a6d42e7dSPeter Dunlap } 1451a6d42e7dSPeter Dunlap 1452a6d42e7dSPeter Dunlap static void 1453a6d42e7dSPeter Dunlap iscsit_buf_xfer_cb(idm_buf_t *idb, idm_status_t status) 1454a6d42e7dSPeter Dunlap { 1455a6d42e7dSPeter Dunlap iscsit_task_t *itask = idb->idb_task_binding->idt_private; 1456a6d42e7dSPeter Dunlap stmf_data_buf_t *dbuf = idb->idb_cb_arg; 1457a6d42e7dSPeter Dunlap 1458a6d42e7dSPeter Dunlap dbuf->db_xfer_status = iscsit_idm_to_stmf(status); 1459a6d42e7dSPeter Dunlap 1460bf604c64SPeter Dunlap /* 1461bf604c64SPeter Dunlap * If the task has been aborted then we don't need to call STMF 1462bf604c64SPeter Dunlap */ 1463bf604c64SPeter Dunlap if (itask->it_stmf_abort) { 1464bf604c64SPeter Dunlap return; 1465bf604c64SPeter Dunlap } 1466bf604c64SPeter Dunlap 1467a6d42e7dSPeter Dunlap /* 146860220f10SPriya Krishnan * For ISCSI over TCP (not iSER), the last SCSI Data PDU passed 146960220f10SPriya Krishnan * for a successful command contains the status as requested by 147060220f10SPriya Krishnan * by COMSTAR (via the DB_SEND_STATUS_GOOD flag). But the iSER 147160220f10SPriya Krishnan * transport does not support phase-collapse. So pretend we are 147260220f10SPriya Krishnan * COMSTAR and send the status in a separate PDU now. 1473a6d42e7dSPeter Dunlap */ 147460220f10SPriya Krishnan if (idb->idb_task_binding->idt_flags & IDM_TASK_PHASECOLLAPSE_SUCCESS) { 147560220f10SPriya Krishnan /* 147660220f10SPriya Krishnan * Mark task complete, remove task from the session task 147760220f10SPriya Krishnan * list and notify COMSTAR that the status has been sent. 147860220f10SPriya Krishnan */ 147960220f10SPriya Krishnan iscsit_task_done(itask); 148060220f10SPriya Krishnan itask->it_idm_task->idt_state = TASK_COMPLETE; 148160220f10SPriya Krishnan stmf_send_status_done(itask->it_stmf_task, 148260220f10SPriya Krishnan iscsit_idm_to_stmf(status), STMF_IOF_LPORT_DONE); 148360220f10SPriya Krishnan } else if ((dbuf->db_flags & DB_SEND_STATUS_GOOD) && 1484a6d42e7dSPeter Dunlap status == IDM_STATUS_SUCCESS) { 148560220f10SPriya Krishnan 1486a6d42e7dSPeter Dunlap /* 148770a38f02SPriya Krishnan * The iscsi target port provider - for iSER, emulates the 148870a38f02SPriya Krishnan * DB_SEND_STATUS_GOOD optimization if requested by STMF; 148970a38f02SPriya Krishnan * it sends the status in a separate PDU after the data 149070a38f02SPriya Krishnan * transfer. In this case the port provider should first 149170a38f02SPriya Krishnan * call stmf_data_xfer_done() to mark the transfer complete 149270a38f02SPriya Krishnan * and then send the status. Although STMF will free the 149370a38f02SPriya Krishnan * buffer at the time the task is freed, even if the transfer 149470a38f02SPriya Krishnan * is not marked complete, this behavior makes statistics 149570a38f02SPriya Krishnan * gathering and task state tracking more difficult than it 149670a38f02SPriya Krishnan * needs to be. 1497a6d42e7dSPeter Dunlap */ 149870a38f02SPriya Krishnan stmf_data_xfer_done(itask->it_stmf_task, dbuf, 0); 1499a6d42e7dSPeter Dunlap if (iscsit_send_scsi_status(itask->it_stmf_task, 0) 150063528ae4SJames Moore != STMF_SUCCESS) { 150170a38f02SPriya Krishnan stmf_send_status_done(itask->it_stmf_task, 150270a38f02SPriya Krishnan STMF_FAILURE, STMF_IOF_LPORT_DONE); 1503a6d42e7dSPeter Dunlap } 1504a6d42e7dSPeter Dunlap } else { 1505a6d42e7dSPeter Dunlap stmf_data_xfer_done(itask->it_stmf_task, dbuf, 0); 150670a38f02SPriya Krishnan /* don't touch dbuf after stmf_data_xfer_done */ 1507a6d42e7dSPeter Dunlap } 1508a6d42e7dSPeter Dunlap } 1509a6d42e7dSPeter Dunlap 1510bf604c64SPeter Dunlap 1511a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1512a6d42e7dSPeter Dunlap stmf_status_t 1513a6d42e7dSPeter Dunlap iscsit_send_scsi_status(scsi_task_t *task, uint32_t ioflags) 1514a6d42e7dSPeter Dunlap { 1515a6d42e7dSPeter Dunlap iscsit_task_t *itask = task->task_port_private; 1516a6d42e7dSPeter Dunlap iscsi_scsi_rsp_hdr_t *rsp; 1517a6d42e7dSPeter Dunlap idm_pdu_t *pdu; 1518a6d42e7dSPeter Dunlap int resp_datalen; 1519a6d42e7dSPeter Dunlap 1520a6d42e7dSPeter Dunlap /* 1521a6d42e7dSPeter Dunlap * If this task is aborted then we don't need to respond. 1522a6d42e7dSPeter Dunlap */ 1523a6d42e7dSPeter Dunlap if (itask->it_stmf_abort) { 1524a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1525a6d42e7dSPeter Dunlap } 1526a6d42e7dSPeter Dunlap 1527a6d42e7dSPeter Dunlap /* 1528a6d42e7dSPeter Dunlap * If this is a task management status, handle it elsewhere. 1529a6d42e7dSPeter Dunlap */ 1530a6d42e7dSPeter Dunlap if (task->task_mgmt_function != TM_NONE) { 1531a6d42e7dSPeter Dunlap /* 1532a6d42e7dSPeter Dunlap * Don't wait for the PDU completion to tell STMF 1533a6d42e7dSPeter Dunlap * the task is done -- it doesn't really matter and 1534a6d42e7dSPeter Dunlap * it makes life complicated if STMF later asks us to 1535a6d42e7dSPeter Dunlap * abort the request and we don't know whether the 1536a6d42e7dSPeter Dunlap * status has been sent or not. 1537a6d42e7dSPeter Dunlap */ 1538a6d42e7dSPeter Dunlap itask->it_tm_responded = B_TRUE; 1539a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(itask->it_tm_pdu, 1540a6d42e7dSPeter Dunlap (task->task_completion_status == STMF_SUCCESS) ? 1541a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_COMPLETE : SCSI_TCP_TM_RESP_FUNC_NOT_SUPP); 1542a6d42e7dSPeter Dunlap stmf_send_status_done(task, STMF_SUCCESS, 1543a6d42e7dSPeter Dunlap STMF_IOF_LPORT_DONE); 1544a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1545a6d42e7dSPeter Dunlap } 1546a6d42e7dSPeter Dunlap 154772cf3143Speter dunlap /* 154872cf3143Speter dunlap * Remove the task from the session task list 154972cf3143Speter dunlap */ 155072cf3143Speter dunlap iscsit_task_done(itask); 155172cf3143Speter dunlap 155272cf3143Speter dunlap /* 155372cf3143Speter dunlap * Send status 155472cf3143Speter dunlap */ 1555a6d42e7dSPeter Dunlap mutex_enter(&itask->it_idm_task->idt_mutex); 1556a6d42e7dSPeter Dunlap if ((itask->it_idm_task->idt_state == TASK_ACTIVE) && 1557a6d42e7dSPeter Dunlap (task->task_completion_status == STMF_SUCCESS) && 1558a6d42e7dSPeter Dunlap (task->task_sense_length == 0) && 1559a6d42e7dSPeter Dunlap (task->task_resid == 0)) { 1560a6d42e7dSPeter Dunlap itask->it_idm_task->idt_state = TASK_COMPLETE; 1561a6d42e7dSPeter Dunlap /* PDU callback releases task hold */ 1562a6d42e7dSPeter Dunlap idm_task_hold(itask->it_idm_task); 1563a6d42e7dSPeter Dunlap mutex_exit(&itask->it_idm_task->idt_mutex); 1564a6d42e7dSPeter Dunlap /* 1565a6d42e7dSPeter Dunlap * Fast path. Cached status PDU's are already 1566a6d42e7dSPeter Dunlap * initialized. We just need to fill in 156760220f10SPriya Krishnan * connection and task information. StatSN is 156860220f10SPriya Krishnan * incremented by 1 for every status sent a 156960220f10SPriya Krishnan * connection. 1570a6d42e7dSPeter Dunlap */ 1571a6d42e7dSPeter Dunlap pdu = kmem_cache_alloc(iscsit_status_pdu_cache, KM_SLEEP); 1572a6d42e7dSPeter Dunlap pdu->isp_ic = itask->it_ict->ict_ic; 1573a6d42e7dSPeter Dunlap pdu->isp_private = itask; 157460220f10SPriya Krishnan pdu->isp_flags |= IDM_PDU_SET_STATSN | IDM_PDU_ADVANCE_STATSN; 1575a6d42e7dSPeter Dunlap 1576a6d42e7dSPeter Dunlap rsp = (iscsi_scsi_rsp_hdr_t *)pdu->isp_hdr; 1577a6d42e7dSPeter Dunlap rsp->itt = itask->it_itt; 15781d7b78a3SPriya Krishnan /* 15791d7b78a3SPriya Krishnan * ExpDataSN is the number of R2T and Data-In (read) 15801d7b78a3SPriya Krishnan * PDUs the target has sent for the SCSI command. 15811d7b78a3SPriya Krishnan * 15821d7b78a3SPriya Krishnan * Since there is no support for bidirectional transfer 15831d7b78a3SPriya Krishnan * yet, either idt_exp_datasn or idt_exp_rttsn, but not 15841d7b78a3SPriya Krishnan * both is valid at any time 15851d7b78a3SPriya Krishnan */ 15861d7b78a3SPriya Krishnan rsp->expdatasn = (itask->it_idm_task->idt_exp_datasn != 0) ? 15871d7b78a3SPriya Krishnan htonl(itask->it_idm_task->idt_exp_datasn): 15881d7b78a3SPriya Krishnan htonl(itask->it_idm_task->idt_exp_rttsn); 1589a6d42e7dSPeter Dunlap rsp->cmd_status = task->task_scsi_status; 1590a6d42e7dSPeter Dunlap iscsit_pdu_tx(pdu); 1591a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1592a6d42e7dSPeter Dunlap } else { 1593a6d42e7dSPeter Dunlap if (itask->it_idm_task->idt_state != TASK_ACTIVE) { 1594a6d42e7dSPeter Dunlap mutex_exit(&itask->it_idm_task->idt_mutex); 159563528ae4SJames Moore return (STMF_FAILURE); 1596a6d42e7dSPeter Dunlap } 1597a6d42e7dSPeter Dunlap itask->it_idm_task->idt_state = TASK_COMPLETE; 1598a6d42e7dSPeter Dunlap /* PDU callback releases task hold */ 1599a6d42e7dSPeter Dunlap idm_task_hold(itask->it_idm_task); 1600a6d42e7dSPeter Dunlap mutex_exit(&itask->it_idm_task->idt_mutex); 1601a6d42e7dSPeter Dunlap 1602a6d42e7dSPeter Dunlap resp_datalen = (task->task_sense_length == 0) ? 0 : 1603a6d42e7dSPeter Dunlap (task->task_sense_length + sizeof (uint16_t)); 1604a6d42e7dSPeter Dunlap 1605a6d42e7dSPeter Dunlap pdu = idm_pdu_alloc(sizeof (iscsi_hdr_t), resp_datalen); 1606a6d42e7dSPeter Dunlap idm_pdu_init(pdu, itask->it_ict->ict_ic, itask, 1607a6d42e7dSPeter Dunlap iscsit_send_status_done); 160860220f10SPriya Krishnan pdu->isp_flags |= IDM_PDU_SET_STATSN | IDM_PDU_ADVANCE_STATSN; 1609a6d42e7dSPeter Dunlap 1610a6d42e7dSPeter Dunlap rsp = (iscsi_scsi_rsp_hdr_t *)pdu->isp_hdr; 1611a6d42e7dSPeter Dunlap bzero(rsp, sizeof (*rsp)); 1612a6d42e7dSPeter Dunlap rsp->opcode = ISCSI_OP_SCSI_RSP; 1613a6d42e7dSPeter Dunlap 1614a6d42e7dSPeter Dunlap rsp->flags = ISCSI_FLAG_FINAL; 1615a6d42e7dSPeter Dunlap if (task->task_status_ctrl & TASK_SCTRL_OVER) { 1616a6d42e7dSPeter Dunlap rsp->flags |= ISCSI_FLAG_CMD_OVERFLOW; 1617a6d42e7dSPeter Dunlap } else if (task->task_status_ctrl & TASK_SCTRL_UNDER) { 1618a6d42e7dSPeter Dunlap rsp->flags |= ISCSI_FLAG_CMD_UNDERFLOW; 1619a6d42e7dSPeter Dunlap } 1620a6d42e7dSPeter Dunlap 1621a6d42e7dSPeter Dunlap rsp->bi_residual_count = 0; 1622a6d42e7dSPeter Dunlap rsp->residual_count = htonl(task->task_resid); 1623a6d42e7dSPeter Dunlap rsp->itt = itask->it_itt; 1624a6d42e7dSPeter Dunlap rsp->response = ISCSI_STATUS_CMD_COMPLETED; 16251d7b78a3SPriya Krishnan rsp->expdatasn = (itask->it_idm_task->idt_exp_datasn != 0) ? 16261d7b78a3SPriya Krishnan htonl(itask->it_idm_task->idt_exp_datasn): 16271d7b78a3SPriya Krishnan htonl(itask->it_idm_task->idt_exp_rttsn); 1628a6d42e7dSPeter Dunlap rsp->cmd_status = task->task_scsi_status; 1629a6d42e7dSPeter Dunlap if (task->task_sense_length != 0) { 1630a6d42e7dSPeter Dunlap /* 1631a6d42e7dSPeter Dunlap * Add a byte to provide the sense length in 1632a6d42e7dSPeter Dunlap * the response 1633a6d42e7dSPeter Dunlap */ 1634a6d42e7dSPeter Dunlap *(uint16_t *)((void *)pdu->isp_data) = 1635a6d42e7dSPeter Dunlap htons(task->task_sense_length); 1636a6d42e7dSPeter Dunlap bcopy(task->task_sense_data, 1637a6d42e7dSPeter Dunlap (uint8_t *)pdu->isp_data + 1638a6d42e7dSPeter Dunlap sizeof (uint16_t), 1639a6d42e7dSPeter Dunlap task->task_sense_length); 1640a6d42e7dSPeter Dunlap hton24(rsp->dlength, resp_datalen); 1641a6d42e7dSPeter Dunlap } 1642a6d42e7dSPeter Dunlap 164330e7468fSPeter Dunlap DTRACE_PROBE5(iscsi__scsi__response, 164430e7468fSPeter Dunlap iscsit_conn_t *, itask->it_ict, 164530e7468fSPeter Dunlap uint8_t, rsp->response, 164630e7468fSPeter Dunlap uint8_t, rsp->cmd_status, 164730e7468fSPeter Dunlap idm_pdu_t *, pdu, 164830e7468fSPeter Dunlap scsi_task_t *, task); 164930e7468fSPeter Dunlap 1650a6d42e7dSPeter Dunlap iscsit_pdu_tx(pdu); 1651a6d42e7dSPeter Dunlap 1652a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1653a6d42e7dSPeter Dunlap } 1654a6d42e7dSPeter Dunlap } 1655a6d42e7dSPeter Dunlap 1656a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1657a6d42e7dSPeter Dunlap static void 1658a6d42e7dSPeter Dunlap iscsit_send_good_status_done(idm_pdu_t *pdu, idm_status_t status) 1659a6d42e7dSPeter Dunlap { 1660bf604c64SPeter Dunlap iscsit_task_t *itask; 1661bf604c64SPeter Dunlap boolean_t aborted; 1662a6d42e7dSPeter Dunlap 1663a6d42e7dSPeter Dunlap itask = pdu->isp_private; 1664bf604c64SPeter Dunlap aborted = itask->it_stmf_abort; 1665bf604c64SPeter Dunlap 1666bf604c64SPeter Dunlap /* 1667bf604c64SPeter Dunlap * After releasing the hold the task may be freed at any time so 1668bf604c64SPeter Dunlap * don't touch it. 1669bf604c64SPeter Dunlap */ 1670a6d42e7dSPeter Dunlap idm_task_rele(itask->it_idm_task); 1671bf604c64SPeter Dunlap if (!aborted) { 1672bf604c64SPeter Dunlap stmf_send_status_done(itask->it_stmf_task, 1673bf604c64SPeter Dunlap iscsit_idm_to_stmf(pdu->isp_status), STMF_IOF_LPORT_DONE); 1674bf604c64SPeter Dunlap } 1675a6d42e7dSPeter Dunlap kmem_cache_free(iscsit_status_pdu_cache, pdu); 1676a6d42e7dSPeter Dunlap } 1677a6d42e7dSPeter Dunlap 1678a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1679a6d42e7dSPeter Dunlap static void 1680a6d42e7dSPeter Dunlap iscsit_send_status_done(idm_pdu_t *pdu, idm_status_t status) 1681a6d42e7dSPeter Dunlap { 1682a6d42e7dSPeter Dunlap iscsit_task_t *itask; 1683bf604c64SPeter Dunlap boolean_t aborted; 1684a6d42e7dSPeter Dunlap 1685a6d42e7dSPeter Dunlap itask = pdu->isp_private; 1686bf604c64SPeter Dunlap aborted = itask->it_stmf_abort; 1687bf604c64SPeter Dunlap 1688bf604c64SPeter Dunlap /* 1689bf604c64SPeter Dunlap * After releasing the hold the task may be freed at any time so 1690bf604c64SPeter Dunlap * don't touch it. 1691bf604c64SPeter Dunlap */ 1692a6d42e7dSPeter Dunlap idm_task_rele(itask->it_idm_task); 1693bf604c64SPeter Dunlap if (!aborted) { 1694bf604c64SPeter Dunlap stmf_send_status_done(itask->it_stmf_task, 1695bf604c64SPeter Dunlap iscsit_idm_to_stmf(pdu->isp_status), STMF_IOF_LPORT_DONE); 1696bf604c64SPeter Dunlap } 1697a6d42e7dSPeter Dunlap idm_pdu_free(pdu); 1698a6d42e7dSPeter Dunlap } 1699a6d42e7dSPeter Dunlap 1700a6d42e7dSPeter Dunlap 1701a6d42e7dSPeter Dunlap void 1702a6d42e7dSPeter Dunlap iscsit_lport_task_free(scsi_task_t *task) 1703a6d42e7dSPeter Dunlap { 1704a6d42e7dSPeter Dunlap iscsit_task_t *itask = task->task_port_private; 1705a6d42e7dSPeter Dunlap 1706a6d42e7dSPeter Dunlap /* We only call idm_task_start for regular tasks, not task management */ 1707a6d42e7dSPeter Dunlap if (task->task_mgmt_function == TM_NONE) { 1708a6d42e7dSPeter Dunlap idm_task_done(itask->it_idm_task); 1709a6d42e7dSPeter Dunlap iscsit_task_free(itask); 1710a6d42e7dSPeter Dunlap return; 1711a6d42e7dSPeter Dunlap } else { 1712a6d42e7dSPeter Dunlap iscsit_tm_task_free(itask); 1713a6d42e7dSPeter Dunlap } 1714a6d42e7dSPeter Dunlap } 1715a6d42e7dSPeter Dunlap 1716a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1717a6d42e7dSPeter Dunlap stmf_status_t 1718a6d42e7dSPeter Dunlap iscsit_abort(stmf_local_port_t *lport, int abort_cmd, void *arg, uint32_t flags) 1719a6d42e7dSPeter Dunlap { 1720a6d42e7dSPeter Dunlap scsi_task_t *st = (scsi_task_t *)arg; 1721a6d42e7dSPeter Dunlap iscsit_task_t *iscsit_task; 1722a6d42e7dSPeter Dunlap idm_task_t *idt; 1723a6d42e7dSPeter Dunlap 1724a6d42e7dSPeter Dunlap /* 1725a6d42e7dSPeter Dunlap * If this is a task management request then there's really not much to 1726a6d42e7dSPeter Dunlap * do. 1727a6d42e7dSPeter Dunlap */ 1728a6d42e7dSPeter Dunlap if (st->task_mgmt_function != TM_NONE) { 1729a6d42e7dSPeter Dunlap return (STMF_ABORT_SUCCESS); 1730a6d42e7dSPeter Dunlap } 1731a6d42e7dSPeter Dunlap 1732a6d42e7dSPeter Dunlap /* 1733a6d42e7dSPeter Dunlap * Regular task, start cleaning up 1734a6d42e7dSPeter Dunlap */ 1735a6d42e7dSPeter Dunlap iscsit_task = st->task_port_private; 1736a6d42e7dSPeter Dunlap idt = iscsit_task->it_idm_task; 1737a6d42e7dSPeter Dunlap mutex_enter(&iscsit_task->it_mutex); 1738a6d42e7dSPeter Dunlap iscsit_task->it_stmf_abort = B_TRUE; 1739a6d42e7dSPeter Dunlap if (iscsit_task->it_aborted) { 1740a6d42e7dSPeter Dunlap mutex_exit(&iscsit_task->it_mutex); 174172cf3143Speter dunlap /* 174272cf3143Speter dunlap * Task is no longer active 174372cf3143Speter dunlap */ 174472cf3143Speter dunlap iscsit_task_done(iscsit_task); 174572cf3143Speter dunlap 1746a6d42e7dSPeter Dunlap /* 1747a6d42e7dSPeter Dunlap * STMF specification is wrong... says to return 1748a6d42e7dSPeter Dunlap * STMF_ABORTED, the code actually looks for 1749a6d42e7dSPeter Dunlap * STMF_ABORT_SUCCESS. 1750a6d42e7dSPeter Dunlap */ 1751a6d42e7dSPeter Dunlap return (STMF_ABORT_SUCCESS); 1752a6d42e7dSPeter Dunlap } else { 1753a6d42e7dSPeter Dunlap mutex_exit(&iscsit_task->it_mutex); 1754a6d42e7dSPeter Dunlap /* 1755a6d42e7dSPeter Dunlap * Call IDM to abort the task. Due to a variety of 1756a6d42e7dSPeter Dunlap * circumstances the task may already be in the process of 1757a6d42e7dSPeter Dunlap * aborting. 1758a6d42e7dSPeter Dunlap * We'll let IDM worry about rationalizing all that except 1759a6d42e7dSPeter Dunlap * for one particular instance. If the state of the task 1760a6d42e7dSPeter Dunlap * is TASK_COMPLETE, we need to indicate to the framework 1761a6d42e7dSPeter Dunlap * that we are in fact done. This typically happens with 1762a6d42e7dSPeter Dunlap * framework-initiated task management type requests 1763a6d42e7dSPeter Dunlap * (e.g. abort task). 1764a6d42e7dSPeter Dunlap */ 1765a6d42e7dSPeter Dunlap if (idt->idt_state == TASK_COMPLETE) { 1766a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(&idt->idt_refcnt); 1767a6d42e7dSPeter Dunlap return (STMF_ABORT_SUCCESS); 1768a6d42e7dSPeter Dunlap } else { 1769a6d42e7dSPeter Dunlap idm_task_abort(idt->idt_ic, idt, AT_TASK_MGMT_ABORT); 1770a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1771a6d42e7dSPeter Dunlap } 1772a6d42e7dSPeter Dunlap } 1773a6d42e7dSPeter Dunlap 1774a6d42e7dSPeter Dunlap /*NOTREACHED*/ 1775a6d42e7dSPeter Dunlap } 1776a6d42e7dSPeter Dunlap 1777a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1778a6d42e7dSPeter Dunlap void 1779a6d42e7dSPeter Dunlap iscsit_ctl(stmf_local_port_t *lport, int cmd, void *arg) 1780a6d42e7dSPeter Dunlap { 1781a6d42e7dSPeter Dunlap iscsit_tgt_t *iscsit_tgt; 1782a6d42e7dSPeter Dunlap 1783a6d42e7dSPeter Dunlap ASSERT((cmd == STMF_CMD_LPORT_ONLINE) || 1784a6d42e7dSPeter Dunlap (cmd == STMF_ACK_LPORT_ONLINE_COMPLETE) || 1785a6d42e7dSPeter Dunlap (cmd == STMF_CMD_LPORT_OFFLINE) || 1786a6d42e7dSPeter Dunlap (cmd == STMF_ACK_LPORT_OFFLINE_COMPLETE)); 1787a6d42e7dSPeter Dunlap 1788a6d42e7dSPeter Dunlap iscsit_tgt = (iscsit_tgt_t *)lport->lport_port_private; 1789a6d42e7dSPeter Dunlap 1790a6d42e7dSPeter Dunlap switch (cmd) { 1791a6d42e7dSPeter Dunlap case STMF_CMD_LPORT_ONLINE: 1792a6d42e7dSPeter Dunlap iscsit_tgt_sm_event(iscsit_tgt, TE_STMF_ONLINE_REQ); 1793a6d42e7dSPeter Dunlap break; 1794a6d42e7dSPeter Dunlap case STMF_CMD_LPORT_OFFLINE: 1795a6d42e7dSPeter Dunlap iscsit_tgt_sm_event(iscsit_tgt, TE_STMF_OFFLINE_REQ); 1796a6d42e7dSPeter Dunlap break; 1797a6d42e7dSPeter Dunlap case STMF_ACK_LPORT_ONLINE_COMPLETE: 1798a6d42e7dSPeter Dunlap iscsit_tgt_sm_event(iscsit_tgt, TE_STMF_ONLINE_COMPLETE_ACK); 1799a6d42e7dSPeter Dunlap break; 1800a6d42e7dSPeter Dunlap case STMF_ACK_LPORT_OFFLINE_COMPLETE: 1801a6d42e7dSPeter Dunlap iscsit_tgt_sm_event(iscsit_tgt, TE_STMF_OFFLINE_COMPLETE_ACK); 1802a6d42e7dSPeter Dunlap break; 1803a6d42e7dSPeter Dunlap 1804a6d42e7dSPeter Dunlap default: 1805a6d42e7dSPeter Dunlap break; 1806a6d42e7dSPeter Dunlap } 1807a6d42e7dSPeter Dunlap } 1808a6d42e7dSPeter Dunlap 1809a6d42e7dSPeter Dunlap static stmf_status_t 1810a6d42e7dSPeter Dunlap iscsit_idm_to_stmf(idm_status_t idmrc) 1811a6d42e7dSPeter Dunlap { 1812a6d42e7dSPeter Dunlap switch (idmrc) { 1813a6d42e7dSPeter Dunlap case IDM_STATUS_SUCCESS: 1814a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1815a6d42e7dSPeter Dunlap default: 1816a6d42e7dSPeter Dunlap return (STMF_FAILURE); 1817a6d42e7dSPeter Dunlap } 1818a6d42e7dSPeter Dunlap /*NOTREACHED*/ 1819a6d42e7dSPeter Dunlap } 1820a6d42e7dSPeter Dunlap 1821a6d42e7dSPeter Dunlap 1822a6d42e7dSPeter Dunlap /* 1823a6d42e7dSPeter Dunlap * ISCSI protocol 1824a6d42e7dSPeter Dunlap */ 1825a6d42e7dSPeter Dunlap 1826a6d42e7dSPeter Dunlap void 1827a6d42e7dSPeter Dunlap iscsit_op_scsi_cmd(idm_conn_t *ic, idm_pdu_t *rx_pdu) 1828a6d42e7dSPeter Dunlap { 1829a6d42e7dSPeter Dunlap iscsit_conn_t *ict; 1830a6d42e7dSPeter Dunlap iscsit_task_t *itask; 1831a6d42e7dSPeter Dunlap scsi_task_t *task; 1832a6d42e7dSPeter Dunlap iscsit_buf_t *ibuf; 1833a6d42e7dSPeter Dunlap iscsi_scsi_cmd_hdr_t *iscsi_scsi = 1834a6d42e7dSPeter Dunlap (iscsi_scsi_cmd_hdr_t *)rx_pdu->isp_hdr; 1835a6d42e7dSPeter Dunlap iscsi_addl_hdr_t *ahs_hdr; 1836a6d42e7dSPeter Dunlap uint16_t addl_cdb_len = 0; 1837a6d42e7dSPeter Dunlap 1838a6d42e7dSPeter Dunlap ict = ic->ic_handle; 1839a6d42e7dSPeter Dunlap 1840a6d42e7dSPeter Dunlap itask = iscsit_task_alloc(ict); 1841a6d42e7dSPeter Dunlap if (itask == NULL) { 184272cf3143Speter dunlap /* Finish processing request */ 184372cf3143Speter dunlap iscsit_set_cmdsn(ict, rx_pdu); 184472cf3143Speter dunlap 1845a6d42e7dSPeter Dunlap iscsit_send_direct_scsi_resp(ict, rx_pdu, 1846a6d42e7dSPeter Dunlap ISCSI_STATUS_CMD_COMPLETED, STATUS_BUSY); 1847a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 1848a6d42e7dSPeter Dunlap return; 1849a6d42e7dSPeter Dunlap } 1850a6d42e7dSPeter Dunlap 1851a6d42e7dSPeter Dunlap 1852a6d42e7dSPeter Dunlap /* 1853a6d42e7dSPeter Dunlap * Note CmdSN and ITT in task. IDM will have already validated this 1854a6d42e7dSPeter Dunlap * request against the connection state so we don't need to check 1855a6d42e7dSPeter Dunlap * that (the connection may have changed state in the meantime but 1856a6d42e7dSPeter Dunlap * we will catch that when we try to send a response) 1857a6d42e7dSPeter Dunlap */ 1858a6d42e7dSPeter Dunlap itask->it_cmdsn = ntohl(iscsi_scsi->cmdsn); 1859a6d42e7dSPeter Dunlap itask->it_itt = iscsi_scsi->itt; 1860a6d42e7dSPeter Dunlap 1861a6d42e7dSPeter Dunlap /* 1862a6d42e7dSPeter Dunlap * Check for extended CDB AHS 1863a6d42e7dSPeter Dunlap */ 1864a6d42e7dSPeter Dunlap if (iscsi_scsi->hlength > 0) { 1865a6d42e7dSPeter Dunlap ahs_hdr = (iscsi_addl_hdr_t *)iscsi_scsi; 1866a6d42e7dSPeter Dunlap addl_cdb_len = ((ahs_hdr->ahs_hlen_hi << 8) | 1867a6d42e7dSPeter Dunlap ahs_hdr->ahs_hlen_lo) - 1; /* Adjust for reserved byte */ 1868a6d42e7dSPeter Dunlap if (((addl_cdb_len + 4) / sizeof (uint32_t)) > 1869a6d42e7dSPeter Dunlap iscsi_scsi->hlength) { 1870a6d42e7dSPeter Dunlap /* Mangled header info, drop it */ 1871a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 1872a6d42e7dSPeter Dunlap return; 1873a6d42e7dSPeter Dunlap } 1874a6d42e7dSPeter Dunlap } 1875a6d42e7dSPeter Dunlap 1876a6d42e7dSPeter Dunlap ict = rx_pdu->isp_ic->ic_handle; /* IDM client private */ 1877a6d42e7dSPeter Dunlap 187872cf3143Speter dunlap /* 187972cf3143Speter dunlap * Add task to session list. This function will also check to 188072cf3143Speter dunlap * ensure that the task does not already exist. 188172cf3143Speter dunlap */ 188272cf3143Speter dunlap if (iscsit_task_start(itask) != IDM_STATUS_SUCCESS) { 188372cf3143Speter dunlap /* 188472cf3143Speter dunlap * Task exists, free all resources and reject. Don't 188572cf3143Speter dunlap * update expcmdsn in this case because RFC 3720 says 188672cf3143Speter dunlap * "The CmdSN of the rejected command PDU (if it is a 188772cf3143Speter dunlap * non-immediate command) MUST NOT be considered received 188872cf3143Speter dunlap * by the target (i.e., a command sequence gap must be 188972cf3143Speter dunlap * assumed for the CmdSN), even though the CmdSN of the 189072cf3143Speter dunlap * rejected command PDU may be reliably ascertained. Upon 189172cf3143Speter dunlap * receiving the Reject, the initiator MUST plug the CmdSN 189272cf3143Speter dunlap * gap in order to continue to use the session. The gap 189372cf3143Speter dunlap * may be plugged either by transmitting a command PDU 189472cf3143Speter dunlap * with the same CmdSN, or by aborting the task (see section 189572cf3143Speter dunlap * 6.9 on how an abort may plug a CmdSN gap)." (Section 6.3) 189672cf3143Speter dunlap */ 189772cf3143Speter dunlap iscsit_task_free(itask); 189872cf3143Speter dunlap iscsit_send_reject(ict, rx_pdu, ISCSI_REJECT_TASK_IN_PROGRESS); 189972cf3143Speter dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 190072cf3143Speter dunlap return; 190172cf3143Speter dunlap } 190272cf3143Speter dunlap 190372cf3143Speter dunlap /* Update sequence numbers */ 190472cf3143Speter dunlap iscsit_set_cmdsn(ict, rx_pdu); 190572cf3143Speter dunlap 190672cf3143Speter dunlap /* 190772cf3143Speter dunlap * Allocate STMF task 190872cf3143Speter dunlap */ 1909a6d42e7dSPeter Dunlap itask->it_stmf_task = stmf_task_alloc( 1910a6d42e7dSPeter Dunlap itask->it_ict->ict_sess->ist_lport, 1911a6d42e7dSPeter Dunlap itask->it_ict->ict_sess->ist_stmf_sess, iscsi_scsi->lun, 1912a6d42e7dSPeter Dunlap 16 + addl_cdb_len, 0); 1913a6d42e7dSPeter Dunlap if (itask->it_stmf_task == NULL) { 1914a6d42e7dSPeter Dunlap /* 1915a6d42e7dSPeter Dunlap * Either stmf really couldn't get memory for a task or, 1916a6d42e7dSPeter Dunlap * more likely, the LU is currently in reset. Either way 1917a6d42e7dSPeter Dunlap * we have no choice but to fail the request. 1918a6d42e7dSPeter Dunlap */ 191972cf3143Speter dunlap iscsit_task_done(itask); 1920a6d42e7dSPeter Dunlap iscsit_task_free(itask); 1921a6d42e7dSPeter Dunlap iscsit_send_direct_scsi_resp(ict, rx_pdu, 1922a6d42e7dSPeter Dunlap ISCSI_STATUS_CMD_COMPLETED, STATUS_BUSY); 192372cf3143Speter dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 1924a6d42e7dSPeter Dunlap return; 1925a6d42e7dSPeter Dunlap } 1926a6d42e7dSPeter Dunlap 1927a6d42e7dSPeter Dunlap task = itask->it_stmf_task; 1928a6d42e7dSPeter Dunlap task->task_port_private = itask; 1929a6d42e7dSPeter Dunlap 1930a6d42e7dSPeter Dunlap bcopy(iscsi_scsi->lun, task->task_lun_no, sizeof (task->task_lun_no)); 1931a6d42e7dSPeter Dunlap 1932a6d42e7dSPeter Dunlap /* 1933a6d42e7dSPeter Dunlap * iSCSI and Comstar use the same values. Should we rely on this 1934a6d42e7dSPeter Dunlap * or translate them bit-wise? 1935a6d42e7dSPeter Dunlap */ 1936a6d42e7dSPeter Dunlap 1937a6d42e7dSPeter Dunlap task->task_flags = 1938a6d42e7dSPeter Dunlap (((iscsi_scsi->flags & ISCSI_FLAG_CMD_READ) ? TF_READ_DATA : 0) | 1939a6d42e7dSPeter Dunlap ((iscsi_scsi->flags & ISCSI_FLAG_CMD_WRITE) ? TF_WRITE_DATA : 0) | 1940a6d42e7dSPeter Dunlap ((rx_pdu->isp_datalen == 0) ? 0 : TF_INITIAL_BURST)); 1941a6d42e7dSPeter Dunlap 1942a6d42e7dSPeter Dunlap switch (iscsi_scsi->flags & ISCSI_FLAG_CMD_ATTR_MASK) { 1943a6d42e7dSPeter Dunlap case ISCSI_ATTR_UNTAGGED: 1944a6d42e7dSPeter Dunlap break; 1945a6d42e7dSPeter Dunlap case ISCSI_ATTR_SIMPLE: 1946a6d42e7dSPeter Dunlap task->task_additional_flags |= TF_ATTR_SIMPLE_QUEUE; 1947a6d42e7dSPeter Dunlap break; 1948a6d42e7dSPeter Dunlap case ISCSI_ATTR_ORDERED: 1949a6d42e7dSPeter Dunlap task->task_additional_flags |= TF_ATTR_ORDERED_QUEUE; 1950a6d42e7dSPeter Dunlap break; 1951a6d42e7dSPeter Dunlap case ISCSI_ATTR_HEAD_OF_QUEUE: 1952a6d42e7dSPeter Dunlap task->task_additional_flags |= TF_ATTR_HEAD_OF_QUEUE; 1953a6d42e7dSPeter Dunlap break; 1954a6d42e7dSPeter Dunlap case ISCSI_ATTR_ACA: 1955a6d42e7dSPeter Dunlap task->task_additional_flags |= TF_ATTR_ACA; 1956a6d42e7dSPeter Dunlap break; 1957a6d42e7dSPeter Dunlap default: 1958a6d42e7dSPeter Dunlap /* Protocol error but just take it, treat as untagged */ 1959a6d42e7dSPeter Dunlap break; 1960a6d42e7dSPeter Dunlap } 1961a6d42e7dSPeter Dunlap 1962a6d42e7dSPeter Dunlap 1963a6d42e7dSPeter Dunlap task->task_additional_flags = 0; 1964a6d42e7dSPeter Dunlap task->task_priority = 0; 1965a6d42e7dSPeter Dunlap task->task_mgmt_function = TM_NONE; 1966a6d42e7dSPeter Dunlap 1967a6d42e7dSPeter Dunlap /* 1968a6d42e7dSPeter Dunlap * This "task_max_nbufs" doesn't map well to BIDI. We probably need 1969a6d42e7dSPeter Dunlap * parameter for each direction. "MaxOutstandingR2T" may very well 1970a6d42e7dSPeter Dunlap * be set to one which could prevent us from doing simultaneous 1971a6d42e7dSPeter Dunlap * transfers in each direction. 1972a6d42e7dSPeter Dunlap */ 1973a6d42e7dSPeter Dunlap task->task_max_nbufs = (iscsi_scsi->flags & ISCSI_FLAG_CMD_WRITE) ? 1974a6d42e7dSPeter Dunlap ict->ict_op.op_max_outstanding_r2t : STMF_BUFS_MAX; 1975a6d42e7dSPeter Dunlap task->task_cmd_seq_no = ntohl(iscsi_scsi->itt); 1976a6d42e7dSPeter Dunlap task->task_expected_xfer_length = ntohl(iscsi_scsi->data_length); 1977a6d42e7dSPeter Dunlap 1978a6d42e7dSPeter Dunlap /* Copy CDB */ 1979a6d42e7dSPeter Dunlap bcopy(iscsi_scsi->scb, task->task_cdb, 16); 1980a6d42e7dSPeter Dunlap if (addl_cdb_len > 0) { 1981a6d42e7dSPeter Dunlap bcopy(ahs_hdr->ahs_extscb, task->task_cdb + 16, addl_cdb_len); 1982a6d42e7dSPeter Dunlap } 1983a6d42e7dSPeter Dunlap 1984a668b114SPriya Krishnan DTRACE_ISCSI_3(scsi__command, idm_conn_t *, ic, 1985a668b114SPriya Krishnan iscsi_scsi_cmd_hdr_t *, (iscsi_scsi_cmd_hdr_t *)rx_pdu->isp_hdr, 1986a668b114SPriya Krishnan scsi_task_t *, task); 1987a668b114SPriya Krishnan 1988a6d42e7dSPeter Dunlap /* 1989a6d42e7dSPeter Dunlap * Copy the transport header into the task handle from the PDU 1990a6d42e7dSPeter Dunlap * handle. The transport header describes this task's remote tagged 1991a6d42e7dSPeter Dunlap * buffer. 1992a6d42e7dSPeter Dunlap */ 1993a6d42e7dSPeter Dunlap if (rx_pdu->isp_transport_hdrlen != 0) { 1994a6d42e7dSPeter Dunlap bcopy(rx_pdu->isp_transport_hdr, 1995a6d42e7dSPeter Dunlap itask->it_idm_task->idt_transport_hdr, 1996a6d42e7dSPeter Dunlap rx_pdu->isp_transport_hdrlen); 1997a6d42e7dSPeter Dunlap } 1998a6d42e7dSPeter Dunlap 1999a6d42e7dSPeter Dunlap /* 2000a6d42e7dSPeter Dunlap * Tell IDM about our new active task 2001a6d42e7dSPeter Dunlap */ 2002a6d42e7dSPeter Dunlap idm_task_start(itask->it_idm_task, (uintptr_t)itask->it_itt); 2003a6d42e7dSPeter Dunlap 2004a6d42e7dSPeter Dunlap /* 2005a6d42e7dSPeter Dunlap * If we have any immediate data then setup the immediate buffer 2006a6d42e7dSPeter Dunlap * context that comes with the task 2007a6d42e7dSPeter Dunlap */ 2008a6d42e7dSPeter Dunlap if (rx_pdu->isp_datalen) { 2009a6d42e7dSPeter Dunlap ibuf = itask->it_immed_data; 2010a6d42e7dSPeter Dunlap ibuf->ibuf_immed_data_pdu = rx_pdu; 2011a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf->db_data_size = rx_pdu->isp_datalen; 2012a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf->db_buf_size = rx_pdu->isp_datalen; 2013a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf->db_relative_offset = 0; 2014a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf->db_sglist[0].seg_length = 2015a6d42e7dSPeter Dunlap rx_pdu->isp_datalen; 2016a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf->db_sglist[0].seg_addr = rx_pdu->isp_data; 2017a6d42e7dSPeter Dunlap 2018a668b114SPriya Krishnan DTRACE_ISCSI_8(xfer__start, idm_conn_t *, ic, 2019a668b114SPriya Krishnan uintptr_t, ibuf->ibuf_stmf_buf->db_sglist[0].seg_addr, 2020a668b114SPriya Krishnan uint32_t, ibuf->ibuf_stmf_buf->db_relative_offset, 2021a668b114SPriya Krishnan uint64_t, 0, uint32_t, 0, uint32_t, 0, /* no raddr */ 2022a668b114SPriya Krishnan uint32_t, rx_pdu->isp_datalen, int, XFER_BUF_TX_TO_INI); 2023a668b114SPriya Krishnan 20243badd853SPriya Krishnan /* 20253badd853SPriya Krishnan * For immediate data transfer, there is no callback from 20263badd853SPriya Krishnan * stmf to indicate that the initial burst of data is 20273badd853SPriya Krishnan * transferred successfully. In some cases, the task can 20283badd853SPriya Krishnan * get freed before execution returns from stmf_post_task. 20293badd853SPriya Krishnan * Although this xfer-start/done probe accurately tracks 20303badd853SPriya Krishnan * the size of the transfer, it does only provide a best 20313badd853SPriya Krishnan * effort on the timing of the transfer. 20323badd853SPriya Krishnan */ 2033a668b114SPriya Krishnan DTRACE_ISCSI_8(xfer__done, idm_conn_t *, ic, 2034a668b114SPriya Krishnan uintptr_t, ibuf->ibuf_stmf_buf->db_sglist[0].seg_addr, 2035a668b114SPriya Krishnan uint32_t, ibuf->ibuf_stmf_buf->db_relative_offset, 2036a668b114SPriya Krishnan uint64_t, 0, uint32_t, 0, uint32_t, 0, /* no raddr */ 2037a668b114SPriya Krishnan uint32_t, rx_pdu->isp_datalen, int, XFER_BUF_TX_TO_INI); 20383badd853SPriya Krishnan 20393badd853SPriya Krishnan stmf_post_task(task, ibuf->ibuf_stmf_buf); 2040a6d42e7dSPeter Dunlap } else { 20413badd853SPriya Krishnan 2042a6d42e7dSPeter Dunlap stmf_post_task(task, NULL); 2043a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2044a6d42e7dSPeter Dunlap } 2045a6d42e7dSPeter Dunlap } 2046a6d42e7dSPeter Dunlap 2047a6d42e7dSPeter Dunlap /*ARGSUSED*/ 2048a6d42e7dSPeter Dunlap void 2049a6d42e7dSPeter Dunlap iscsit_deferred_dispatch(idm_pdu_t *rx_pdu) 2050a6d42e7dSPeter Dunlap { 2051a6d42e7dSPeter Dunlap iscsit_conn_t *ict = rx_pdu->isp_ic->ic_handle; 2052a6d42e7dSPeter Dunlap 2053a6d42e7dSPeter Dunlap /* 2054a6d42e7dSPeter Dunlap * If the connection has been lost then ignore new PDU's 2055a6d42e7dSPeter Dunlap */ 2056a6d42e7dSPeter Dunlap mutex_enter(&ict->ict_mutex); 2057a6d42e7dSPeter Dunlap if (ict->ict_lost) { 2058a6d42e7dSPeter Dunlap mutex_exit(&ict->ict_mutex); 2059a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_FAIL); 2060a6d42e7dSPeter Dunlap return; 2061a6d42e7dSPeter Dunlap } 2062a6d42e7dSPeter Dunlap 2063a6d42e7dSPeter Dunlap /* 2064a6d42e7dSPeter Dunlap * Grab a hold on the connection to prevent it from going away 2065a6d42e7dSPeter Dunlap * between now and when the taskq function is called. 2066a6d42e7dSPeter Dunlap */ 2067a6d42e7dSPeter Dunlap iscsit_conn_dispatch_hold(ict); 2068a6d42e7dSPeter Dunlap mutex_exit(&ict->ict_mutex); 2069a6d42e7dSPeter Dunlap 2070a6d42e7dSPeter Dunlap if (taskq_dispatch(iscsit_global.global_dispatch_taskq, 2071a6d42e7dSPeter Dunlap iscsit_deferred, rx_pdu, DDI_NOSLEEP) == NULL) { 2072a6d42e7dSPeter Dunlap /* 2073a6d42e7dSPeter Dunlap * In the unlikely scenario that we couldn't get the resources 2074a6d42e7dSPeter Dunlap * to dispatch the PDU then just drop it. 2075a6d42e7dSPeter Dunlap */ 2076a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_FAIL); 2077a6d42e7dSPeter Dunlap idm_conn_event(ict->ict_ic, CE_TRANSPORT_FAIL, NULL); 2078a6d42e7dSPeter Dunlap iscsit_conn_dispatch_rele(ict); 2079a6d42e7dSPeter Dunlap } 2080a6d42e7dSPeter Dunlap } 2081a6d42e7dSPeter Dunlap 2082a6d42e7dSPeter Dunlap static void 2083a6d42e7dSPeter Dunlap iscsit_deferred(void *rx_pdu_void) 2084a6d42e7dSPeter Dunlap { 2085a6d42e7dSPeter Dunlap idm_pdu_t *rx_pdu = rx_pdu_void; 2086a6d42e7dSPeter Dunlap idm_conn_t *ic = rx_pdu->isp_ic; 2087a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 2088a6d42e7dSPeter Dunlap 2089a6d42e7dSPeter Dunlap switch (IDM_PDU_OPCODE(rx_pdu)) { 2090a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_OUT: 2091a6d42e7dSPeter Dunlap iscsit_set_cmdsn(ict, rx_pdu); 2092a6d42e7dSPeter Dunlap iscsit_pdu_op_noop(ict, rx_pdu); 2093a6d42e7dSPeter Dunlap break; 2094a6d42e7dSPeter Dunlap case ISCSI_OP_LOGIN_CMD: 2095a6d42e7dSPeter Dunlap iscsit_pdu_op_login_cmd(ict, rx_pdu); 2096a6d42e7dSPeter Dunlap break; 2097a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_CMD: 2098a6d42e7dSPeter Dunlap iscsit_set_cmdsn(ict, rx_pdu); 2099a6d42e7dSPeter Dunlap iscsit_pdu_op_text_cmd(ict, rx_pdu); 2100a6d42e7dSPeter Dunlap break; 2101a6d42e7dSPeter Dunlap case ISCSI_OP_LOGOUT_CMD: 2102a6d42e7dSPeter Dunlap iscsit_set_cmdsn(ict, rx_pdu); 2103a6d42e7dSPeter Dunlap iscsit_pdu_op_logout_cmd(ict, rx_pdu); 2104a6d42e7dSPeter Dunlap break; 2105a6d42e7dSPeter Dunlap default: 2106a6d42e7dSPeter Dunlap /* Protocol error. IDM should have caught this */ 2107a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_FAIL); 2108a6d42e7dSPeter Dunlap ASSERT(0); 2109a6d42e7dSPeter Dunlap break; 2110a6d42e7dSPeter Dunlap } 2111a6d42e7dSPeter Dunlap 2112a6d42e7dSPeter Dunlap iscsit_conn_dispatch_rele(ict); 2113a6d42e7dSPeter Dunlap } 2114a6d42e7dSPeter Dunlap 2115a6d42e7dSPeter Dunlap static void 2116a6d42e7dSPeter Dunlap iscsit_send_direct_scsi_resp(iscsit_conn_t *ict, idm_pdu_t *rx_pdu, 2117a6d42e7dSPeter Dunlap uint8_t response, uint8_t cmd_status) 2118a6d42e7dSPeter Dunlap { 2119a6d42e7dSPeter Dunlap idm_pdu_t *rsp_pdu; 2120a6d42e7dSPeter Dunlap idm_conn_t *ic; 2121a6d42e7dSPeter Dunlap iscsi_scsi_rsp_hdr_t *resp; 212230e7468fSPeter Dunlap iscsi_scsi_cmd_hdr_t *req = 212330e7468fSPeter Dunlap (iscsi_scsi_cmd_hdr_t *)rx_pdu->isp_hdr; 2124a6d42e7dSPeter Dunlap 2125a6d42e7dSPeter Dunlap ic = ict->ict_ic; 2126a6d42e7dSPeter Dunlap 2127a6d42e7dSPeter Dunlap rsp_pdu = idm_pdu_alloc(sizeof (iscsi_scsi_rsp_hdr_t), 0); 2128a6d42e7dSPeter Dunlap idm_pdu_init(rsp_pdu, ic, NULL, NULL); 212960220f10SPriya Krishnan /* 213060220f10SPriya Krishnan * StatSN is incremented by 1 for every response sent on 213160220f10SPriya Krishnan * a connection except for responses sent as a result of 213260220f10SPriya Krishnan * a retry or SNACK 213360220f10SPriya Krishnan */ 213460220f10SPriya Krishnan rsp_pdu->isp_flags |= IDM_PDU_SET_STATSN | IDM_PDU_ADVANCE_STATSN; 213560220f10SPriya Krishnan 2136a6d42e7dSPeter Dunlap resp = (iscsi_scsi_rsp_hdr_t *)rsp_pdu->isp_hdr; 2137a6d42e7dSPeter Dunlap 2138a6d42e7dSPeter Dunlap resp->opcode = ISCSI_OP_SCSI_RSP; 2139a6d42e7dSPeter Dunlap resp->flags = ISCSI_FLAG_FINAL; 2140a6d42e7dSPeter Dunlap resp->response = response; 2141a6d42e7dSPeter Dunlap resp->cmd_status = cmd_status; 214230e7468fSPeter Dunlap resp->itt = req->itt; 214330e7468fSPeter Dunlap if ((response == ISCSI_STATUS_CMD_COMPLETED) && 214430e7468fSPeter Dunlap (req->data_length != 0) && 214530e7468fSPeter Dunlap ((req->flags & ISCSI_FLAG_CMD_READ) || 214630e7468fSPeter Dunlap (req->flags & ISCSI_FLAG_CMD_WRITE))) { 214730e7468fSPeter Dunlap resp->flags |= ISCSI_FLAG_CMD_UNDERFLOW; 214830e7468fSPeter Dunlap resp->residual_count = req->data_length; 214930e7468fSPeter Dunlap } 215030e7468fSPeter Dunlap 215130e7468fSPeter Dunlap DTRACE_PROBE4(iscsi__scsi__direct__response, 215230e7468fSPeter Dunlap iscsit_conn_t *, ict, 215330e7468fSPeter Dunlap uint8_t, resp->response, 215430e7468fSPeter Dunlap uint8_t, resp->cmd_status, 215530e7468fSPeter Dunlap idm_pdu_t *, rsp_pdu); 2156a6d42e7dSPeter Dunlap 2157a6d42e7dSPeter Dunlap iscsit_pdu_tx(rsp_pdu); 2158a6d42e7dSPeter Dunlap } 2159a6d42e7dSPeter Dunlap 2160a6d42e7dSPeter Dunlap void 2161a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(idm_pdu_t *tm_resp_pdu, uint8_t tm_status) 2162a6d42e7dSPeter Dunlap { 2163a6d42e7dSPeter Dunlap iscsi_scsi_task_mgt_rsp_hdr_t *tm_resp; 2164a6d42e7dSPeter Dunlap 216560220f10SPriya Krishnan /* 216660220f10SPriya Krishnan * The target must take note of the last-sent StatSN. 216760220f10SPriya Krishnan * The StatSN is to be incremented after sending a 216860220f10SPriya Krishnan * task management response. Digest recovery can only 216960220f10SPriya Krishnan * work if StatSN is incremented. 217060220f10SPriya Krishnan */ 217160220f10SPriya Krishnan tm_resp_pdu->isp_flags |= IDM_PDU_SET_STATSN | IDM_PDU_ADVANCE_STATSN; 2172a6d42e7dSPeter Dunlap tm_resp = (iscsi_scsi_task_mgt_rsp_hdr_t *)tm_resp_pdu->isp_hdr; 2173a6d42e7dSPeter Dunlap tm_resp->response = tm_status; 217430e7468fSPeter Dunlap 217530e7468fSPeter Dunlap DTRACE_PROBE3(iscsi__scsi__tm__response, 217630e7468fSPeter Dunlap iscsit_conn_t *, tm_resp_pdu->isp_ic->ic_handle, 217730e7468fSPeter Dunlap uint8_t, tm_resp->response, 217830e7468fSPeter Dunlap idm_pdu_t *, tm_resp_pdu); 2179a6d42e7dSPeter Dunlap iscsit_pdu_tx(tm_resp_pdu); 2180a6d42e7dSPeter Dunlap } 2181a6d42e7dSPeter Dunlap 2182a6d42e7dSPeter Dunlap void 2183a6d42e7dSPeter Dunlap iscsit_op_scsi_task_mgmt(iscsit_conn_t *ict, idm_pdu_t *rx_pdu) 2184a6d42e7dSPeter Dunlap { 2185a6d42e7dSPeter Dunlap idm_pdu_t *tm_resp_pdu; 2186a6d42e7dSPeter Dunlap iscsit_task_t *itask; 2187a6d42e7dSPeter Dunlap iscsit_task_t *tm_itask; 2188a6d42e7dSPeter Dunlap scsi_task_t *task; 2189a6d42e7dSPeter Dunlap iscsi_scsi_task_mgt_hdr_t *iscsi_tm = 2190a6d42e7dSPeter Dunlap (iscsi_scsi_task_mgt_hdr_t *)rx_pdu->isp_hdr; 2191a6d42e7dSPeter Dunlap iscsi_scsi_task_mgt_rsp_hdr_t *iscsi_tm_rsp = 2192a6d42e7dSPeter Dunlap (iscsi_scsi_task_mgt_rsp_hdr_t *)rx_pdu->isp_hdr; 2193a6d42e7dSPeter Dunlap uint32_t rtt, cmdsn, refcmdsn; 2194a6d42e7dSPeter Dunlap uint8_t tm_func; 2195a6d42e7dSPeter Dunlap 2196a6d42e7dSPeter Dunlap /* 2197a6d42e7dSPeter Dunlap * Setup response PDU (response field will get filled in later) 2198a6d42e7dSPeter Dunlap */ 2199a6d42e7dSPeter Dunlap tm_resp_pdu = idm_pdu_alloc(sizeof (iscsi_scsi_task_mgt_rsp_hdr_t), 0); 2200a6d42e7dSPeter Dunlap if (tm_resp_pdu == NULL) { 2201a6d42e7dSPeter Dunlap /* Can't respond, just drop it */ 2202a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2203a6d42e7dSPeter Dunlap return; 2204a6d42e7dSPeter Dunlap } 2205a6d42e7dSPeter Dunlap idm_pdu_init(tm_resp_pdu, ict->ict_ic, NULL, NULL); 2206a6d42e7dSPeter Dunlap iscsi_tm_rsp = (iscsi_scsi_task_mgt_rsp_hdr_t *)tm_resp_pdu->isp_hdr; 2207a6d42e7dSPeter Dunlap bzero(iscsi_tm_rsp, sizeof (iscsi_scsi_task_mgt_rsp_hdr_t)); 2208a6d42e7dSPeter Dunlap iscsi_tm_rsp->opcode = ISCSI_OP_SCSI_TASK_MGT_RSP; 2209a6d42e7dSPeter Dunlap iscsi_tm_rsp->flags = ISCSI_FLAG_FINAL; 2210a6d42e7dSPeter Dunlap iscsi_tm_rsp->itt = rx_pdu->isp_hdr->itt; 2211a6d42e7dSPeter Dunlap 2212a6d42e7dSPeter Dunlap /* 2213a6d42e7dSPeter Dunlap * Figure out what we're being asked to do. 2214a6d42e7dSPeter Dunlap */ 221530e7468fSPeter Dunlap DTRACE_PROBE4(iscsi__scsi__tm__request, 221630e7468fSPeter Dunlap iscsit_conn_t *, ict, 221730e7468fSPeter Dunlap uint8_t, (iscsi_tm->function & ISCSI_FLAG_TASK_MGMT_FUNCTION_MASK), 221830e7468fSPeter Dunlap uint32_t, iscsi_tm->rtt, 221930e7468fSPeter Dunlap idm_pdu_t *, rx_pdu); 2220a6d42e7dSPeter Dunlap switch (iscsi_tm->function & ISCSI_FLAG_TASK_MGMT_FUNCTION_MASK) { 2221a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_ABORT_TASK: 2222a6d42e7dSPeter Dunlap /* 2223a6d42e7dSPeter Dunlap * STMF doesn't currently support the "abort task" task 2224a6d42e7dSPeter Dunlap * management command although it does support aborting 2225a6d42e7dSPeter Dunlap * an individual task. We'll get STMF to abort the task 2226a6d42e7dSPeter Dunlap * for us but handle the details of the task management 2227a6d42e7dSPeter Dunlap * command ourselves. 2228a6d42e7dSPeter Dunlap * 2229a6d42e7dSPeter Dunlap * Find the task associated with the referenced task tag. 2230a6d42e7dSPeter Dunlap */ 2231a6d42e7dSPeter Dunlap rtt = iscsi_tm->rtt; 2232a6d42e7dSPeter Dunlap itask = (iscsit_task_t *)idm_task_find_by_handle(ict->ict_ic, 2233a6d42e7dSPeter Dunlap (uintptr_t)rtt); 2234a6d42e7dSPeter Dunlap 2235a6d42e7dSPeter Dunlap if (itask == NULL) { 2236a6d42e7dSPeter Dunlap cmdsn = ntohl(iscsi_tm->cmdsn); 2237a6d42e7dSPeter Dunlap refcmdsn = ntohl(iscsi_tm->refcmdsn); 2238a6d42e7dSPeter Dunlap 2239a6d42e7dSPeter Dunlap /* 2240a6d42e7dSPeter Dunlap * Task was not found. If RefCmdSN is within the CmdSN 2241a6d42e7dSPeter Dunlap * window and less than CmdSN of the TM function, return 2242a6d42e7dSPeter Dunlap * "Function Complete". Otherwise, return 2243a6d42e7dSPeter Dunlap * "Task Does Not Exist". 2244a6d42e7dSPeter Dunlap */ 2245a6d42e7dSPeter Dunlap 2246a6d42e7dSPeter Dunlap if (iscsit_cmdsn_in_window(ict, refcmdsn) && 2247a6d42e7dSPeter Dunlap (refcmdsn < cmdsn)) { 2248a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2249a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_COMPLETE); 2250a6d42e7dSPeter Dunlap } else { 2251a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2252a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_NO_TASK); 2253a6d42e7dSPeter Dunlap } 2254a6d42e7dSPeter Dunlap } else { 2255a6d42e7dSPeter Dunlap 2256a6d42e7dSPeter Dunlap /* 2257a6d42e7dSPeter Dunlap * Tell STMF to abort the task. This will do no harm 2258a6d42e7dSPeter Dunlap * if the task is already complete. 2259a6d42e7dSPeter Dunlap */ 2260a6d42e7dSPeter Dunlap stmf_abort(STMF_QUEUE_TASK_ABORT, itask->it_stmf_task, 2261a6d42e7dSPeter Dunlap STMF_ABORTED, NULL); 2262a6d42e7dSPeter Dunlap 2263a6d42e7dSPeter Dunlap /* 2264a6d42e7dSPeter Dunlap * Make sure the task hasn't already completed 2265a6d42e7dSPeter Dunlap */ 2266a6d42e7dSPeter Dunlap mutex_enter(&itask->it_idm_task->idt_mutex); 2267a6d42e7dSPeter Dunlap if ((itask->it_idm_task->idt_state == TASK_COMPLETE) || 2268a6d42e7dSPeter Dunlap (itask->it_idm_task->idt_state == TASK_IDLE)) { 2269a6d42e7dSPeter Dunlap /* 2270a6d42e7dSPeter Dunlap * Task is complete, return "Task Does Not 2271a6d42e7dSPeter Dunlap * Exist" 2272a6d42e7dSPeter Dunlap */ 2273a6d42e7dSPeter Dunlap mutex_exit(&itask->it_idm_task->idt_mutex); 2274a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2275a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_NO_TASK); 2276a6d42e7dSPeter Dunlap } else { 2277a6d42e7dSPeter Dunlap /* 2278a6d42e7dSPeter Dunlap * STMF is now aborting the task, return 2279a6d42e7dSPeter Dunlap * "Function Complete" 2280a6d42e7dSPeter Dunlap */ 2281a6d42e7dSPeter Dunlap mutex_exit(&itask->it_idm_task->idt_mutex); 2282a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2283a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_COMPLETE); 2284a6d42e7dSPeter Dunlap } 2285a6d42e7dSPeter Dunlap idm_task_rele(itask->it_idm_task); 2286a6d42e7dSPeter Dunlap } 2287a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2288a6d42e7dSPeter Dunlap return; 2289a6d42e7dSPeter Dunlap 2290a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_ABORT_TASK_SET: 2291a6d42e7dSPeter Dunlap tm_func = TM_ABORT_TASK_SET; 2292a6d42e7dSPeter Dunlap break; 2293a6d42e7dSPeter Dunlap 2294a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_CLEAR_ACA: 2295a6d42e7dSPeter Dunlap tm_func = TM_CLEAR_ACA; 2296a6d42e7dSPeter Dunlap break; 2297a6d42e7dSPeter Dunlap 2298a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_CLEAR_TASK_SET: 2299a6d42e7dSPeter Dunlap tm_func = TM_CLEAR_TASK_SET; 2300a6d42e7dSPeter Dunlap break; 2301a6d42e7dSPeter Dunlap 2302a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_LOGICAL_UNIT_RESET: 2303a6d42e7dSPeter Dunlap tm_func = TM_LUN_RESET; 2304a6d42e7dSPeter Dunlap break; 2305a6d42e7dSPeter Dunlap 2306a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_TARGET_WARM_RESET: 2307a6d42e7dSPeter Dunlap tm_func = TM_TARGET_WARM_RESET; 2308a6d42e7dSPeter Dunlap break; 2309a6d42e7dSPeter Dunlap 2310a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_TARGET_COLD_RESET: 2311a6d42e7dSPeter Dunlap tm_func = TM_TARGET_COLD_RESET; 2312a6d42e7dSPeter Dunlap break; 2313a6d42e7dSPeter Dunlap 2314a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_TASK_REASSIGN: 2315a6d42e7dSPeter Dunlap /* 2316a6d42e7dSPeter Dunlap * We do not currently support allegiance reassignment. When 2317a6d42e7dSPeter Dunlap * we start supporting ERL1+, we will need to. 2318a6d42e7dSPeter Dunlap */ 2319a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2320a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_NO_ALLG_REASSN); 2321a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2322a6d42e7dSPeter Dunlap return; 2323a6d42e7dSPeter Dunlap 2324a6d42e7dSPeter Dunlap default: 2325a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2326a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_REJECTED); 2327a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2328a6d42e7dSPeter Dunlap return; 2329a6d42e7dSPeter Dunlap } 2330a6d42e7dSPeter Dunlap 2331a6d42e7dSPeter Dunlap tm_itask = iscsit_tm_task_alloc(ict); 2332a6d42e7dSPeter Dunlap if (tm_itask == NULL) { 2333a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2334a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_REJECTED); 2335a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2336a6d42e7dSPeter Dunlap return; 2337a6d42e7dSPeter Dunlap } 2338a6d42e7dSPeter Dunlap 2339a6d42e7dSPeter Dunlap 2340a6d42e7dSPeter Dunlap task = stmf_task_alloc(ict->ict_sess->ist_lport, 2341a6d42e7dSPeter Dunlap ict->ict_sess->ist_stmf_sess, iscsi_tm->lun, 2342a6d42e7dSPeter Dunlap 0, STMF_TASK_EXT_NONE); 2343a6d42e7dSPeter Dunlap if (task == NULL) { 2344a6d42e7dSPeter Dunlap /* 2345a6d42e7dSPeter Dunlap * If this happens, either the LU is in reset, couldn't 2346a6d42e7dSPeter Dunlap * get memory, or some other condition in which we simply 2347a6d42e7dSPeter Dunlap * can't complete this request. It would be nice to return 2348a6d42e7dSPeter Dunlap * an error code like "busy" but the closest we have is 2349a6d42e7dSPeter Dunlap * "rejected". 2350a6d42e7dSPeter Dunlap */ 2351a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2352a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_REJECTED); 2353a6d42e7dSPeter Dunlap iscsit_tm_task_free(tm_itask); 2354a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2355a6d42e7dSPeter Dunlap return; 2356a6d42e7dSPeter Dunlap } 2357a6d42e7dSPeter Dunlap 2358a6d42e7dSPeter Dunlap tm_itask->it_tm_pdu = tm_resp_pdu; 2359a6d42e7dSPeter Dunlap tm_itask->it_stmf_task = task; 2360a6d42e7dSPeter Dunlap task->task_port_private = tm_itask; 2361a6d42e7dSPeter Dunlap task->task_mgmt_function = tm_func; 2362a6d42e7dSPeter Dunlap task->task_additional_flags = TASK_AF_NO_EXPECTED_XFER_LENGTH; 2363a6d42e7dSPeter Dunlap task->task_priority = 0; 2364a6d42e7dSPeter Dunlap task->task_max_nbufs = STMF_BUFS_MAX; 2365a6d42e7dSPeter Dunlap task->task_cmd_seq_no = iscsi_tm->itt; 2366a6d42e7dSPeter Dunlap task->task_expected_xfer_length = 0; 2367a6d42e7dSPeter Dunlap 2368a6d42e7dSPeter Dunlap stmf_post_task(task, NULL); 2369a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2370a6d42e7dSPeter Dunlap } 2371a6d42e7dSPeter Dunlap 2372a6d42e7dSPeter Dunlap static void 2373a6d42e7dSPeter Dunlap iscsit_pdu_op_noop(iscsit_conn_t *ict, idm_pdu_t *rx_pdu) 2374a6d42e7dSPeter Dunlap { 2375a6d42e7dSPeter Dunlap iscsi_nop_out_hdr_t *out = (iscsi_nop_out_hdr_t *)rx_pdu->isp_hdr; 2376a6d42e7dSPeter Dunlap iscsi_nop_in_hdr_t *in; 2377a6d42e7dSPeter Dunlap int resp_datalen; 2378a6d42e7dSPeter Dunlap idm_pdu_t *resp; 2379a6d42e7dSPeter Dunlap 2380a6d42e7dSPeter Dunlap /* Ignore the response from initiator */ 238172cf3143Speter dunlap if ((out->itt == ISCSI_RSVD_TASK_TAG) || 238272cf3143Speter dunlap (out->ttt != ISCSI_RSVD_TASK_TAG)) { 238372cf3143Speter dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2384a6d42e7dSPeter Dunlap return; 238572cf3143Speter dunlap } 2386a6d42e7dSPeter Dunlap 2387a6d42e7dSPeter Dunlap /* Allocate a PDU to respond */ 2388a6d42e7dSPeter Dunlap resp_datalen = ntoh24(out->dlength); 2389a6d42e7dSPeter Dunlap resp = idm_pdu_alloc(sizeof (iscsi_hdr_t), resp_datalen); 2390a6d42e7dSPeter Dunlap idm_pdu_init(resp, ict->ict_ic, NULL, NULL); 2391a6d42e7dSPeter Dunlap if (resp_datalen > 0) { 2392a6d42e7dSPeter Dunlap bcopy(rx_pdu->isp_data, resp->isp_data, resp_datalen); 2393a6d42e7dSPeter Dunlap } 2394a6d42e7dSPeter Dunlap 239560220f10SPriya Krishnan /* 239660220f10SPriya Krishnan * When sending a NOP-In as a response to a NOP-Out from the initiator, 239760220f10SPriya Krishnan * the target must respond with the same initiator task tag that was 239860220f10SPriya Krishnan * provided in the NOP-Out request, the target transfer tag must be 239960220f10SPriya Krishnan * ISCSI_RSVD_TASK_TAG (0xffffffff) and StatSN will contain the next 240060220f10SPriya Krishnan * status sequence number. The StatSN for the connection is advanced 240160220f10SPriya Krishnan * after this PDU is sent. 240260220f10SPriya Krishnan */ 2403a6d42e7dSPeter Dunlap in = (iscsi_nop_in_hdr_t *)resp->isp_hdr; 2404a6d42e7dSPeter Dunlap bzero(in, sizeof (*in)); 2405a6d42e7dSPeter Dunlap in->opcode = ISCSI_OP_NOOP_IN; 2406a6d42e7dSPeter Dunlap in->flags = ISCSI_FLAG_FINAL; 2407a6d42e7dSPeter Dunlap bcopy(out->lun, in->lun, 8); 2408a6d42e7dSPeter Dunlap in->itt = out->itt; 2409a6d42e7dSPeter Dunlap in->ttt = ISCSI_RSVD_TASK_TAG; 2410a6d42e7dSPeter Dunlap hton24(in->dlength, resp_datalen); 241160220f10SPriya Krishnan resp->isp_flags |= IDM_PDU_SET_STATSN | IDM_PDU_ADVANCE_STATSN; 2412a6d42e7dSPeter Dunlap /* Any other field in resp to be set? */ 2413a6d42e7dSPeter Dunlap iscsit_pdu_tx(resp); 2414a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2415a6d42e7dSPeter Dunlap } 2416a6d42e7dSPeter Dunlap 2417a6d42e7dSPeter Dunlap static void 2418a6d42e7dSPeter Dunlap iscsit_pdu_op_login_cmd(iscsit_conn_t *ict, idm_pdu_t *rx_pdu) 2419a6d42e7dSPeter Dunlap { 2420a6d42e7dSPeter Dunlap 2421a6d42e7dSPeter Dunlap /* 2422a6d42e7dSPeter Dunlap * Submit PDU to login state machine. State machine will free the 2423a6d42e7dSPeter Dunlap * PDU. 2424a6d42e7dSPeter Dunlap */ 2425a6d42e7dSPeter Dunlap iscsit_login_sm_event(ict, ILE_LOGIN_RCV, rx_pdu); 2426a6d42e7dSPeter Dunlap } 2427a6d42e7dSPeter Dunlap 2428a6d42e7dSPeter Dunlap void 2429a6d42e7dSPeter Dunlap iscsit_pdu_op_logout_cmd(iscsit_conn_t *ict, idm_pdu_t *rx_pdu) 2430a6d42e7dSPeter Dunlap { 2431a6d42e7dSPeter Dunlap iscsi_logout_hdr_t *logout_req = 2432a6d42e7dSPeter Dunlap (iscsi_logout_hdr_t *)rx_pdu->isp_hdr; 2433a6d42e7dSPeter Dunlap iscsi_logout_rsp_hdr_t *logout_rsp; 2434a6d42e7dSPeter Dunlap idm_pdu_t *resp; 2435a6d42e7dSPeter Dunlap 2436a6d42e7dSPeter Dunlap /* Allocate a PDU to respond */ 2437a6d42e7dSPeter Dunlap resp = idm_pdu_alloc(sizeof (iscsi_hdr_t), 0); 2438a6d42e7dSPeter Dunlap idm_pdu_init(resp, ict->ict_ic, NULL, NULL); 243960220f10SPriya Krishnan /* 244060220f10SPriya Krishnan * The StatSN is to be sent to the initiator, 244160220f10SPriya Krishnan * it is not required to increment the number 244260220f10SPriya Krishnan * as the connection is terminating. 244360220f10SPriya Krishnan */ 244460220f10SPriya Krishnan resp->isp_flags |= IDM_PDU_SET_STATSN; 2445a6d42e7dSPeter Dunlap /* 2446a6d42e7dSPeter Dunlap * Logout results in the immediate termination of all tasks except 2447a6d42e7dSPeter Dunlap * if the logout reason is ISCSI_LOGOUT_REASON_RECOVERY. The 2448a6d42e7dSPeter Dunlap * connection state machine will drive this task cleanup automatically 2449a6d42e7dSPeter Dunlap * so we don't need to handle that here. 2450a6d42e7dSPeter Dunlap */ 2451a6d42e7dSPeter Dunlap logout_rsp = (iscsi_logout_rsp_hdr_t *)resp->isp_hdr; 2452a6d42e7dSPeter Dunlap bzero(logout_rsp, sizeof (*logout_rsp)); 2453a6d42e7dSPeter Dunlap logout_rsp->opcode = ISCSI_OP_LOGOUT_RSP; 2454a6d42e7dSPeter Dunlap logout_rsp->flags = ISCSI_FLAG_FINAL; 2455a6d42e7dSPeter Dunlap logout_rsp->itt = logout_req->itt; 2456a6d42e7dSPeter Dunlap if ((logout_req->flags & ISCSI_FLAG_LOGOUT_REASON_MASK) > 2457a6d42e7dSPeter Dunlap ISCSI_LOGOUT_REASON_RECOVERY) { 2458a6d42e7dSPeter Dunlap logout_rsp->response = ISCSI_LOGOUT_RECOVERY_UNSUPPORTED; 2459a6d42e7dSPeter Dunlap } else { 2460a6d42e7dSPeter Dunlap logout_rsp->response = ISCSI_LOGOUT_SUCCESS; 2461a6d42e7dSPeter Dunlap } 2462a6d42e7dSPeter Dunlap 2463a6d42e7dSPeter Dunlap iscsit_pdu_tx(resp); 2464a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2465a6d42e7dSPeter Dunlap } 2466a6d42e7dSPeter Dunlap 2467a6d42e7dSPeter Dunlap /* 2468a6d42e7dSPeter Dunlap * Calculate the number of outstanding commands we can process 2469a6d42e7dSPeter Dunlap */ 2470a6d42e7dSPeter Dunlap int 2471a6d42e7dSPeter Dunlap iscsit_cmd_window() 2472a6d42e7dSPeter Dunlap { 2473a6d42e7dSPeter Dunlap /* Will be better later */ 2474a6d42e7dSPeter Dunlap return (1024); 2475a6d42e7dSPeter Dunlap } 2476a6d42e7dSPeter Dunlap 2477a6d42e7dSPeter Dunlap /* 2478a6d42e7dSPeter Dunlap * Set local registers based on incoming PDU 2479a6d42e7dSPeter Dunlap */ 2480a6d42e7dSPeter Dunlap void 2481a6d42e7dSPeter Dunlap iscsit_set_cmdsn(iscsit_conn_t *ict, idm_pdu_t *rx_pdu) 2482a6d42e7dSPeter Dunlap { 2483a6d42e7dSPeter Dunlap iscsit_sess_t *ist; 2484a6d42e7dSPeter Dunlap iscsi_scsi_cmd_hdr_t *req; 2485a6d42e7dSPeter Dunlap 2486a6d42e7dSPeter Dunlap ist = ict->ict_sess; 2487a6d42e7dSPeter Dunlap 2488a6d42e7dSPeter Dunlap req = (iscsi_scsi_cmd_hdr_t *)rx_pdu->isp_hdr; 2489a6d42e7dSPeter Dunlap 2490a6d42e7dSPeter Dunlap rw_enter(&ist->ist_sn_rwlock, RW_WRITER); 2491a6d42e7dSPeter Dunlap ist->ist_expcmdsn = ntohl(req->cmdsn) + 1; 2492a6d42e7dSPeter Dunlap ist->ist_maxcmdsn = ntohl(req->cmdsn) + iscsit_cmd_window(); 2493a6d42e7dSPeter Dunlap rw_exit(&ist->ist_sn_rwlock); 2494a6d42e7dSPeter Dunlap } 2495a6d42e7dSPeter Dunlap 2496a6d42e7dSPeter Dunlap /* 2497a6d42e7dSPeter Dunlap * Wrapper funtion, calls iscsi_calc_rspsn and idm_pdu_tx 2498a6d42e7dSPeter Dunlap */ 2499a6d42e7dSPeter Dunlap void 2500a6d42e7dSPeter Dunlap iscsit_pdu_tx(idm_pdu_t *pdu) 2501a6d42e7dSPeter Dunlap { 2502a6d42e7dSPeter Dunlap iscsit_conn_t *ict = pdu->isp_ic->ic_handle; 250360220f10SPriya Krishnan iscsi_scsi_rsp_hdr_t *rsp = (iscsi_scsi_rsp_hdr_t *)pdu->isp_hdr; 250460220f10SPriya Krishnan iscsit_sess_t *ist = ict->ict_sess; 2505a6d42e7dSPeter Dunlap 2506a6d42e7dSPeter Dunlap /* 250760220f10SPriya Krishnan * The command sequence numbers are session-wide and must stay 250860220f10SPriya Krishnan * consistent across the transfer, so protect the cmdsn with a 250960220f10SPriya Krishnan * reader lock on the session. The status sequence number will 251060220f10SPriya Krishnan * be updated just before the transport layer transmits the PDU. 2511a6d42e7dSPeter Dunlap */ 251260220f10SPriya Krishnan 251360220f10SPriya Krishnan rw_enter(&ict->ict_sess->ist_sn_rwlock, RW_READER); 251460220f10SPriya Krishnan /* Set ExpCmdSN and MaxCmdSN */ 251560220f10SPriya Krishnan rsp->maxcmdsn = htonl(ist->ist_maxcmdsn); 251660220f10SPriya Krishnan rsp->expcmdsn = htonl(ist->ist_expcmdsn); 2517a6d42e7dSPeter Dunlap idm_pdu_tx(pdu); 2518a6d42e7dSPeter Dunlap rw_exit(&ict->ict_sess->ist_sn_rwlock); 2519a6d42e7dSPeter Dunlap } 2520a6d42e7dSPeter Dunlap 2521a6d42e7dSPeter Dunlap /* 2522a6d42e7dSPeter Dunlap * Internal functions 2523a6d42e7dSPeter Dunlap */ 2524a6d42e7dSPeter Dunlap 2525a6d42e7dSPeter Dunlap void 2526a6d42e7dSPeter Dunlap iscsit_send_async_event(iscsit_conn_t *ict, uint8_t event) 2527a6d42e7dSPeter Dunlap { 2528a6d42e7dSPeter Dunlap idm_pdu_t *abt; 2529a6d42e7dSPeter Dunlap iscsi_async_evt_hdr_t *async_abt; 2530a6d42e7dSPeter Dunlap 2531a6d42e7dSPeter Dunlap /* 2532a6d42e7dSPeter Dunlap * Get a PDU to build the abort request. 2533a6d42e7dSPeter Dunlap */ 2534a6d42e7dSPeter Dunlap abt = idm_pdu_alloc(sizeof (iscsi_hdr_t), 0); 2535a6d42e7dSPeter Dunlap if (abt == NULL) { 2536a6d42e7dSPeter Dunlap idm_conn_event(ict->ict_ic, CE_TRANSPORT_FAIL, NULL); 2537a6d42e7dSPeter Dunlap return; 2538a6d42e7dSPeter Dunlap } 2539a6d42e7dSPeter Dunlap 254060220f10SPriya Krishnan /* 254160220f10SPriya Krishnan * A asynchronous message is sent by the target to request a logout. 254260220f10SPriya Krishnan * The StatSN for the connection is advanced after the PDU is sent 254360220f10SPriya Krishnan * to allow for initiator and target state synchronization. 254460220f10SPriya Krishnan */ 254572cf3143Speter dunlap idm_pdu_init(abt, ict->ict_ic, NULL, NULL); 2546a6d42e7dSPeter Dunlap abt->isp_datalen = 0; 254760220f10SPriya Krishnan abt->isp_flags |= IDM_PDU_SET_STATSN | IDM_PDU_ADVANCE_STATSN; 2548a6d42e7dSPeter Dunlap 2549a6d42e7dSPeter Dunlap async_abt = (iscsi_async_evt_hdr_t *)abt->isp_hdr; 2550a6d42e7dSPeter Dunlap bzero(async_abt, sizeof (*async_abt)); 2551a6d42e7dSPeter Dunlap async_abt->opcode = ISCSI_OP_ASYNC_EVENT; 2552a6d42e7dSPeter Dunlap async_abt->async_event = event; 2553a6d42e7dSPeter Dunlap async_abt->flags = ISCSI_FLAG_FINAL; 2554a6d42e7dSPeter Dunlap async_abt->rsvd4[0] = 0xff; 2555a6d42e7dSPeter Dunlap async_abt->rsvd4[1] = 0xff; 2556a6d42e7dSPeter Dunlap async_abt->rsvd4[2] = 0xff; 2557a6d42e7dSPeter Dunlap async_abt->rsvd4[3] = 0xff; 2558a6d42e7dSPeter Dunlap 2559a6d42e7dSPeter Dunlap switch (event) { 2560a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_REQUEST_LOGOUT: 2561a6d42e7dSPeter Dunlap async_abt->param3 = htons(IDM_LOGOUT_SECONDS); 2562a6d42e7dSPeter Dunlap break; 2563a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_SCSI_EVENT: 2564a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_DROPPING_CONNECTION: 2565a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_DROPPING_ALL_CONNECTIONS: 2566a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_PARAM_NEGOTIATION: 2567a6d42e7dSPeter Dunlap default: 2568a6d42e7dSPeter Dunlap ASSERT(0); 2569a6d42e7dSPeter Dunlap } 2570a6d42e7dSPeter Dunlap 2571a6d42e7dSPeter Dunlap iscsit_pdu_tx(abt); 2572a6d42e7dSPeter Dunlap } 2573a6d42e7dSPeter Dunlap 257472cf3143Speter dunlap void 257572cf3143Speter dunlap iscsit_send_reject(iscsit_conn_t *ict, idm_pdu_t *rejected_pdu, uint8_t reason) 257672cf3143Speter dunlap { 257772cf3143Speter dunlap idm_pdu_t *reject_pdu; 257872cf3143Speter dunlap iscsi_reject_rsp_hdr_t *reject; 257972cf3143Speter dunlap 258072cf3143Speter dunlap /* 258172cf3143Speter dunlap * Get a PDU to build the abort request. 258272cf3143Speter dunlap */ 258372cf3143Speter dunlap reject_pdu = idm_pdu_alloc(sizeof (iscsi_hdr_t), 258472cf3143Speter dunlap rejected_pdu->isp_hdrlen); 258572cf3143Speter dunlap if (reject_pdu == NULL) { 258672cf3143Speter dunlap idm_conn_event(ict->ict_ic, CE_TRANSPORT_FAIL, NULL); 258772cf3143Speter dunlap return; 258872cf3143Speter dunlap } 258972cf3143Speter dunlap idm_pdu_init(reject_pdu, ict->ict_ic, NULL, NULL); 259060220f10SPriya Krishnan /* StatSN is advanced after a Reject PDU */ 259160220f10SPriya Krishnan reject_pdu->isp_flags |= IDM_PDU_SET_STATSN | IDM_PDU_ADVANCE_STATSN; 259272cf3143Speter dunlap reject_pdu->isp_datalen = rejected_pdu->isp_hdrlen; 259372cf3143Speter dunlap bcopy(rejected_pdu->isp_hdr, reject_pdu->isp_data, 259472cf3143Speter dunlap rejected_pdu->isp_hdrlen); 259572cf3143Speter dunlap 259672cf3143Speter dunlap reject = (iscsi_reject_rsp_hdr_t *)reject_pdu->isp_hdr; 259772cf3143Speter dunlap bzero(reject, sizeof (*reject)); 259872cf3143Speter dunlap reject->opcode = ISCSI_OP_REJECT_MSG; 259972cf3143Speter dunlap reject->reason = reason; 260072cf3143Speter dunlap reject->flags = ISCSI_FLAG_FINAL; 260172cf3143Speter dunlap hton24(reject->dlength, rejected_pdu->isp_hdrlen); 260272cf3143Speter dunlap reject->must_be_ff[0] = 0xff; 260372cf3143Speter dunlap reject->must_be_ff[1] = 0xff; 260472cf3143Speter dunlap reject->must_be_ff[2] = 0xff; 260572cf3143Speter dunlap reject->must_be_ff[3] = 0xff; 260672cf3143Speter dunlap 260772cf3143Speter dunlap iscsit_pdu_tx(reject_pdu); 260872cf3143Speter dunlap } 260972cf3143Speter dunlap 2610a6d42e7dSPeter Dunlap 2611a6d42e7dSPeter Dunlap static iscsit_task_t * 2612a6d42e7dSPeter Dunlap iscsit_task_alloc(iscsit_conn_t *ict) 2613a6d42e7dSPeter Dunlap { 2614a6d42e7dSPeter Dunlap iscsit_task_t *itask; 2615a6d42e7dSPeter Dunlap iscsit_buf_t *immed_ibuf; 2616a6d42e7dSPeter Dunlap 2617a6d42e7dSPeter Dunlap /* 2618a6d42e7dSPeter Dunlap * Possible items to pre-alloc if we cache iscsit_task_t's: 2619a6d42e7dSPeter Dunlap * 2620a6d42e7dSPeter Dunlap * Status PDU w/ sense buffer 2621a6d42e7dSPeter Dunlap * stmf_data_buf_t for immediate data 2622a6d42e7dSPeter Dunlap */ 2623a6d42e7dSPeter Dunlap itask = kmem_alloc(sizeof (iscsit_task_t) + sizeof (iscsit_buf_t) + 2624a6d42e7dSPeter Dunlap sizeof (stmf_data_buf_t), KM_NOSLEEP); 2625a6d42e7dSPeter Dunlap if (itask != NULL) { 2626a6d42e7dSPeter Dunlap mutex_init(&itask->it_mutex, NULL, MUTEX_DRIVER, NULL); 2627a6d42e7dSPeter Dunlap itask->it_aborted = itask->it_stmf_abort = 2628a6d42e7dSPeter Dunlap itask->it_tm_task = 0; 2629a6d42e7dSPeter Dunlap 2630a6d42e7dSPeter Dunlap immed_ibuf = (iscsit_buf_t *)(itask + 1); 2631a6d42e7dSPeter Dunlap bzero(immed_ibuf, sizeof (*immed_ibuf)); 2632a6d42e7dSPeter Dunlap immed_ibuf->ibuf_is_immed = B_TRUE; 2633a6d42e7dSPeter Dunlap immed_ibuf->ibuf_stmf_buf = (stmf_data_buf_t *)(immed_ibuf + 1); 2634a6d42e7dSPeter Dunlap 2635a6d42e7dSPeter Dunlap bzero(immed_ibuf->ibuf_stmf_buf, sizeof (stmf_data_buf_t)); 2636a6d42e7dSPeter Dunlap immed_ibuf->ibuf_stmf_buf->db_port_private = immed_ibuf; 2637a6d42e7dSPeter Dunlap immed_ibuf->ibuf_stmf_buf->db_sglist_length = 1; 2638a6d42e7dSPeter Dunlap immed_ibuf->ibuf_stmf_buf->db_flags = DB_DIRECTION_FROM_RPORT | 2639a6d42e7dSPeter Dunlap DB_DONT_CACHE; 2640a6d42e7dSPeter Dunlap itask->it_immed_data = immed_ibuf; 2641a6d42e7dSPeter Dunlap itask->it_idm_task = idm_task_alloc(ict->ict_ic); 2642a6d42e7dSPeter Dunlap if (itask->it_idm_task != NULL) { 2643a6d42e7dSPeter Dunlap itask->it_idm_task->idt_private = itask; 2644a6d42e7dSPeter Dunlap itask->it_ict = ict; 2645a6d42e7dSPeter Dunlap itask->it_ttt = itask->it_idm_task->idt_tt; 2646a6d42e7dSPeter Dunlap return (itask); 2647a6d42e7dSPeter Dunlap } else { 2648a6d42e7dSPeter Dunlap kmem_free(itask, sizeof (iscsit_task_t) + 2649a6d42e7dSPeter Dunlap sizeof (iscsit_buf_t) + sizeof (stmf_data_buf_t)); 2650a6d42e7dSPeter Dunlap } 2651a6d42e7dSPeter Dunlap } 2652a6d42e7dSPeter Dunlap 2653a6d42e7dSPeter Dunlap return (NULL); 2654a6d42e7dSPeter Dunlap } 2655a6d42e7dSPeter Dunlap 2656a6d42e7dSPeter Dunlap static void 2657a6d42e7dSPeter Dunlap iscsit_task_free(iscsit_task_t *itask) 2658a6d42e7dSPeter Dunlap { 2659a6d42e7dSPeter Dunlap idm_task_free(itask->it_idm_task); 2660a6d42e7dSPeter Dunlap mutex_destroy(&itask->it_mutex); 2661a6d42e7dSPeter Dunlap kmem_free(itask, sizeof (iscsit_task_t) + 2662a6d42e7dSPeter Dunlap sizeof (iscsit_buf_t) + sizeof (stmf_data_buf_t)); 2663a6d42e7dSPeter Dunlap } 2664a6d42e7dSPeter Dunlap 2665a6d42e7dSPeter Dunlap static iscsit_task_t * 2666a6d42e7dSPeter Dunlap iscsit_tm_task_alloc(iscsit_conn_t *ict) 2667a6d42e7dSPeter Dunlap { 2668a6d42e7dSPeter Dunlap iscsit_task_t *itask; 2669a6d42e7dSPeter Dunlap 2670a6d42e7dSPeter Dunlap itask = kmem_zalloc(sizeof (iscsit_task_t), KM_NOSLEEP); 2671a6d42e7dSPeter Dunlap if (itask != NULL) { 2672a6d42e7dSPeter Dunlap idm_conn_hold(ict->ict_ic); 2673a6d42e7dSPeter Dunlap mutex_init(&itask->it_mutex, NULL, MUTEX_DRIVER, NULL); 2674a6d42e7dSPeter Dunlap itask->it_aborted = itask->it_stmf_abort = 2675a6d42e7dSPeter Dunlap itask->it_tm_responded = 0; 2676a6d42e7dSPeter Dunlap itask->it_tm_pdu = NULL; 2677a6d42e7dSPeter Dunlap itask->it_tm_task = 1; 2678a6d42e7dSPeter Dunlap itask->it_ict = ict; 2679a6d42e7dSPeter Dunlap } 2680a6d42e7dSPeter Dunlap 2681a6d42e7dSPeter Dunlap return (itask); 2682a6d42e7dSPeter Dunlap } 2683a6d42e7dSPeter Dunlap 2684a6d42e7dSPeter Dunlap static void 2685a6d42e7dSPeter Dunlap iscsit_tm_task_free(iscsit_task_t *itask) 2686a6d42e7dSPeter Dunlap { 2687a6d42e7dSPeter Dunlap /* 2688a6d42e7dSPeter Dunlap * If we responded then the call to idm_pdu_complete will free the 2689a6d42e7dSPeter Dunlap * PDU. Otherwise we got aborted before the TM function could 2690a6d42e7dSPeter Dunlap * complete and we need to free the PDU explicitly. 2691a6d42e7dSPeter Dunlap */ 2692a6d42e7dSPeter Dunlap if (itask->it_tm_pdu != NULL && !itask->it_tm_responded) 2693a6d42e7dSPeter Dunlap idm_pdu_free(itask->it_tm_pdu); 2694a6d42e7dSPeter Dunlap idm_conn_rele(itask->it_ict->ict_ic); 2695a6d42e7dSPeter Dunlap mutex_destroy(&itask->it_mutex); 2696a6d42e7dSPeter Dunlap kmem_free(itask, sizeof (iscsit_task_t)); 2697a6d42e7dSPeter Dunlap } 2698a6d42e7dSPeter Dunlap 269972cf3143Speter dunlap static idm_status_t 270072cf3143Speter dunlap iscsit_task_start(iscsit_task_t *itask) 270172cf3143Speter dunlap { 270272cf3143Speter dunlap iscsit_sess_t *ist = itask->it_ict->ict_sess; 270372cf3143Speter dunlap avl_index_t where; 270472cf3143Speter dunlap 270572cf3143Speter dunlap /* 270672cf3143Speter dunlap * Sanity check the ITT and ensure that this task does not already 270772cf3143Speter dunlap * exist. If not then add the task to the session task list. 270872cf3143Speter dunlap */ 270972cf3143Speter dunlap mutex_enter(&ist->ist_mutex); 271072cf3143Speter dunlap mutex_enter(&itask->it_mutex); 271172cf3143Speter dunlap itask->it_active = 1; 271272cf3143Speter dunlap if (avl_find(&ist->ist_task_list, itask, &where) == NULL) { 271372cf3143Speter dunlap /* New task, add to AVL */ 271472cf3143Speter dunlap avl_insert(&ist->ist_task_list, itask, where); 271572cf3143Speter dunlap mutex_exit(&itask->it_mutex); 271672cf3143Speter dunlap mutex_exit(&ist->ist_mutex); 271772cf3143Speter dunlap return (IDM_STATUS_SUCCESS); 271872cf3143Speter dunlap } 271972cf3143Speter dunlap mutex_exit(&itask->it_mutex); 272072cf3143Speter dunlap mutex_exit(&ist->ist_mutex); 272172cf3143Speter dunlap 272272cf3143Speter dunlap return (IDM_STATUS_REJECT); 272372cf3143Speter dunlap } 272472cf3143Speter dunlap 272572cf3143Speter dunlap static void 272672cf3143Speter dunlap iscsit_task_done(iscsit_task_t *itask) 272772cf3143Speter dunlap { 272872cf3143Speter dunlap iscsit_sess_t *ist = itask->it_ict->ict_sess; 272972cf3143Speter dunlap 273072cf3143Speter dunlap mutex_enter(&ist->ist_mutex); 273172cf3143Speter dunlap mutex_enter(&itask->it_mutex); 273272cf3143Speter dunlap if (itask->it_active) { 273372cf3143Speter dunlap avl_remove(&ist->ist_task_list, itask); 273472cf3143Speter dunlap itask->it_active = 0; 273572cf3143Speter dunlap } 273672cf3143Speter dunlap mutex_exit(&itask->it_mutex); 273772cf3143Speter dunlap mutex_exit(&ist->ist_mutex); 273872cf3143Speter dunlap } 273972cf3143Speter dunlap 2740a6d42e7dSPeter Dunlap /* 2741a6d42e7dSPeter Dunlap * iscsit status PDU cache 2742a6d42e7dSPeter Dunlap */ 2743a6d42e7dSPeter Dunlap 2744a6d42e7dSPeter Dunlap /*ARGSUSED*/ 2745a6d42e7dSPeter Dunlap static int 2746a6d42e7dSPeter Dunlap iscsit_status_pdu_constructor(void *pdu_void, void *arg, int flags) 2747a6d42e7dSPeter Dunlap { 2748a6d42e7dSPeter Dunlap idm_pdu_t *pdu = pdu_void; 2749a6d42e7dSPeter Dunlap iscsi_scsi_rsp_hdr_t *rsp; 2750a6d42e7dSPeter Dunlap 2751a6d42e7dSPeter Dunlap bzero(pdu, sizeof (idm_pdu_t)); 2752a6d42e7dSPeter Dunlap pdu->isp_callback = iscsit_send_good_status_done; 2753a6d42e7dSPeter Dunlap pdu->isp_magic = IDM_PDU_MAGIC; 2754a6d42e7dSPeter Dunlap pdu->isp_hdr = (iscsi_hdr_t *)(pdu + 1); /* Ptr arithmetic */ 2755a6d42e7dSPeter Dunlap pdu->isp_hdrlen = sizeof (iscsi_hdr_t); 2756a6d42e7dSPeter Dunlap 2757a6d42e7dSPeter Dunlap /* Setup status response */ 2758a6d42e7dSPeter Dunlap rsp = (iscsi_scsi_rsp_hdr_t *)pdu->isp_hdr; 2759a6d42e7dSPeter Dunlap bzero(rsp, sizeof (*rsp)); 2760a6d42e7dSPeter Dunlap rsp->opcode = ISCSI_OP_SCSI_RSP; 2761a6d42e7dSPeter Dunlap rsp->flags = ISCSI_FLAG_FINAL; 2762a6d42e7dSPeter Dunlap rsp->response = ISCSI_STATUS_CMD_COMPLETED; 2763a6d42e7dSPeter Dunlap 2764a6d42e7dSPeter Dunlap return (0); 2765a6d42e7dSPeter Dunlap } 2766a6d42e7dSPeter Dunlap 2767a6d42e7dSPeter Dunlap /* 2768a6d42e7dSPeter Dunlap * iscsit private data handler 2769a6d42e7dSPeter Dunlap */ 2770a6d42e7dSPeter Dunlap 2771a6d42e7dSPeter Dunlap /*ARGSUSED*/ 2772a6d42e7dSPeter Dunlap static void 2773a6d42e7dSPeter Dunlap iscsit_pp_cb(struct stmf_port_provider *pp, int cmd, void *arg, uint32_t flags) 2774a6d42e7dSPeter Dunlap { 2775a6d42e7dSPeter Dunlap it_config_t *cfg; 2776a6d42e7dSPeter Dunlap nvlist_t *nvl; 2777*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States iscsit_service_enabled_t old_state; 2778a6d42e7dSPeter Dunlap 2779a6d42e7dSPeter Dunlap if ((cmd != STMF_PROVIDER_DATA_UPDATED) || (arg == NULL)) { 2780a6d42e7dSPeter Dunlap return; 2781a6d42e7dSPeter Dunlap } 2782a6d42e7dSPeter Dunlap 2783a6d42e7dSPeter Dunlap nvl = (nvlist_t *)arg; 2784a6d42e7dSPeter Dunlap 2785a6d42e7dSPeter Dunlap /* Translate nvlist */ 2786a6d42e7dSPeter Dunlap if (it_nv_to_config(nvl, &cfg) != 0) { 2787a6d42e7dSPeter Dunlap cmn_err(CE_WARN, "Configuration is invalid"); 2788a6d42e7dSPeter Dunlap return; 2789a6d42e7dSPeter Dunlap } 2790a6d42e7dSPeter Dunlap 2791*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States /* Check that no iSCSI ioctl is currently running */ 2792*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_enter(&iscsit_global.global_state_mutex); 2793*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States old_state = iscsit_global.global_svc_state; 2794*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States switch (iscsit_global.global_svc_state) { 2795*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States case ISE_ENABLED: 2796*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States case ISE_DISABLED: 2797*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States iscsit_global.global_svc_state = ISE_BUSY; 2798*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States break; 2799*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States case ISE_ENABLING: 2800*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States /* 2801*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * It is OK for the iscsit_pp_cb to be called from inside of 2802*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * an iSCSI ioctl only if we are currently executing inside 2803*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States * of stmf_register_port_provider. 2804*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States */ 2805*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States ASSERT((flags & STMF_PCB_PREG_COMPLETE) != 0); 2806*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States break; 2807*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States default: 2808*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States cmn_err(CE_WARN, "iscsit_pp_cb called when global_svc_state" 2809*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States " is not ENABLED(0x%x) -- ignoring", 2810*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States iscsit_global.global_svc_state); 2811*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 2812*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States it_config_free_cmn(cfg); 2813*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States return; 2814*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States } 2815*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 2816*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States 2817a6d42e7dSPeter Dunlap /* Update config */ 2818a6d42e7dSPeter Dunlap (void) iscsit_config_merge(cfg); 2819a6d42e7dSPeter Dunlap 2820a6d42e7dSPeter Dunlap it_config_free_cmn(cfg); 2821*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States 2822*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States /* Restore old iSCSI driver global state */ 2823*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_enter(&iscsit_global.global_state_mutex); 2824*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States ASSERT(iscsit_global.global_svc_state == ISE_BUSY || 2825*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States iscsit_global.global_svc_state == ISE_ENABLING); 2826*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States iscsit_global.global_svc_state = old_state; 2827*8c629652SPeter Cudhea - Sun Microsystems - Burlington, MA United States mutex_exit(&iscsit_global.global_state_mutex); 2828a6d42e7dSPeter Dunlap } 2829a6d42e7dSPeter Dunlap 2830a6d42e7dSPeter Dunlap 2831a6d42e7dSPeter Dunlap static it_cfg_status_t 2832a6d42e7dSPeter Dunlap iscsit_config_merge(it_config_t *in_cfg) 2833a6d42e7dSPeter Dunlap { 2834a6d42e7dSPeter Dunlap it_cfg_status_t status; 2835a6d42e7dSPeter Dunlap it_config_t *cfg; 2836a6d42e7dSPeter Dunlap it_config_t tmp_cfg; 2837a6d42e7dSPeter Dunlap list_t tpg_del_list; 2838a6d42e7dSPeter Dunlap 2839a6d42e7dSPeter Dunlap if (in_cfg) { 2840a6d42e7dSPeter Dunlap cfg = in_cfg; 2841a6d42e7dSPeter Dunlap } else { 2842a6d42e7dSPeter Dunlap /* Make empty config */ 2843a6d42e7dSPeter Dunlap bzero(&tmp_cfg, sizeof (tmp_cfg)); 2844a6d42e7dSPeter Dunlap cfg = &tmp_cfg; 2845a6d42e7dSPeter Dunlap } 2846a6d42e7dSPeter Dunlap 2847a6d42e7dSPeter Dunlap list_create(&tpg_del_list, sizeof (iscsit_tpg_t), 2848a6d42e7dSPeter Dunlap offsetof(iscsit_tpg_t, tpg_delete_ln)); 2849a6d42e7dSPeter Dunlap 2850a6d42e7dSPeter Dunlap /* 2851a6d42e7dSPeter Dunlap * Update targets, initiator contexts, target portal groups, 2852a6d42e7dSPeter Dunlap * and iSNS client 2853a6d42e7dSPeter Dunlap */ 2854a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_LOCK(RW_WRITER); 2855a6d42e7dSPeter Dunlap if (((status = iscsit_config_merge_tpg(cfg, &tpg_del_list)) 2856a6d42e7dSPeter Dunlap != 0) || 2857a6d42e7dSPeter Dunlap ((status = iscsit_config_merge_tgt(cfg)) != 0) || 2858a6d42e7dSPeter Dunlap ((status = iscsit_config_merge_ini(cfg)) != 0) || 2859a6d42e7dSPeter Dunlap ((status = isnst_config_merge(cfg)) != 0)) { 2860a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 2861a6d42e7dSPeter Dunlap return (status); 2862a6d42e7dSPeter Dunlap } 2863a6d42e7dSPeter Dunlap 2864a6d42e7dSPeter Dunlap /* Update other global config parameters */ 2865a6d42e7dSPeter Dunlap if (iscsit_global.global_props) { 2866a6d42e7dSPeter Dunlap nvlist_free(iscsit_global.global_props); 2867a6d42e7dSPeter Dunlap iscsit_global.global_props = NULL; 2868a6d42e7dSPeter Dunlap } 2869a6d42e7dSPeter Dunlap if (in_cfg) { 2870a6d42e7dSPeter Dunlap (void) nvlist_dup(cfg->config_global_properties, 2871a6d42e7dSPeter Dunlap &iscsit_global.global_props, KM_SLEEP); 2872a6d42e7dSPeter Dunlap } 2873a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 2874a6d42e7dSPeter Dunlap 2875a6d42e7dSPeter Dunlap iscsit_config_destroy_tpgs(&tpg_del_list); 2876a6d42e7dSPeter Dunlap 2877a6d42e7dSPeter Dunlap list_destroy(&tpg_del_list); 2878a6d42e7dSPeter Dunlap 2879a6d42e7dSPeter Dunlap return (ITCFG_SUCCESS); 2880a6d42e7dSPeter Dunlap } 2881a6d42e7dSPeter Dunlap 2882a6d42e7dSPeter Dunlap /* 2883a6d42e7dSPeter Dunlap * iscsit_sna_lt[e] 2884a6d42e7dSPeter Dunlap * 2885a6d42e7dSPeter Dunlap * Compare serial numbers using serial number arithmetic as defined in 2886a6d42e7dSPeter Dunlap * RFC 1982. 2887a6d42e7dSPeter Dunlap * 2888a6d42e7dSPeter Dunlap * NOTE: This code is duplicated in the isns server as well as iscsitgtd. It 2889a6d42e7dSPeter Dunlap * ought to be common. 2890a6d42e7dSPeter Dunlap */ 2891a6d42e7dSPeter Dunlap 2892a6d42e7dSPeter Dunlap static int 2893a6d42e7dSPeter Dunlap iscsit_sna_lt(uint32_t sn1, uint32_t sn2) 2894a6d42e7dSPeter Dunlap { 2895a6d42e7dSPeter Dunlap return ((sn1 != sn2) && 2896a6d42e7dSPeter Dunlap (((sn1 < sn2) && ((sn2 - sn1) < ISCSIT_SNA32_CHECK)) || 2897a6d42e7dSPeter Dunlap ((sn1 > sn2) && ((sn1 - sn2) > ISCSIT_SNA32_CHECK)))); 2898a6d42e7dSPeter Dunlap } 2899a6d42e7dSPeter Dunlap 2900a6d42e7dSPeter Dunlap static int 2901a6d42e7dSPeter Dunlap iscsit_sna_lte(uint32_t sn1, uint32_t sn2) 2902a6d42e7dSPeter Dunlap { 2903a6d42e7dSPeter Dunlap return ((sn1 == sn2) || 2904a6d42e7dSPeter Dunlap (((sn1 < sn2) && ((sn2 - sn1) < ISCSIT_SNA32_CHECK)) || 2905a6d42e7dSPeter Dunlap ((sn1 > sn2) && ((sn1 - sn2) > ISCSIT_SNA32_CHECK)))); 2906a6d42e7dSPeter Dunlap } 2907a6d42e7dSPeter Dunlap 2908a6d42e7dSPeter Dunlap 2909a6d42e7dSPeter Dunlap static boolean_t 2910a6d42e7dSPeter Dunlap iscsit_cmdsn_in_window(iscsit_conn_t *ict, uint32_t cmdsn) 2911a6d42e7dSPeter Dunlap { 2912a6d42e7dSPeter Dunlap iscsit_sess_t *ist = ict->ict_sess; 2913a6d42e7dSPeter Dunlap int rval = B_TRUE; 2914a6d42e7dSPeter Dunlap 2915a6d42e7dSPeter Dunlap ist = ict->ict_sess; 2916a6d42e7dSPeter Dunlap 2917a6d42e7dSPeter Dunlap rw_enter(&ist->ist_sn_rwlock, RW_READER); 2918a6d42e7dSPeter Dunlap 2919a6d42e7dSPeter Dunlap /* 2920a6d42e7dSPeter Dunlap * If cmdsn is less than ist_expcmdsn - iscsit_cmd_window() or 2921a6d42e7dSPeter Dunlap * greater than ist_expcmdsn, it's not in the window. 2922a6d42e7dSPeter Dunlap */ 2923a6d42e7dSPeter Dunlap 2924a6d42e7dSPeter Dunlap if (iscsit_sna_lt(cmdsn, (ist->ist_expcmdsn - iscsit_cmd_window())) || 2925a6d42e7dSPeter Dunlap !iscsit_sna_lte(cmdsn, ist->ist_expcmdsn)) { 2926a6d42e7dSPeter Dunlap rval = B_FALSE; 2927a6d42e7dSPeter Dunlap } 2928a6d42e7dSPeter Dunlap 2929a6d42e7dSPeter Dunlap rw_exit(&ist->ist_sn_rwlock); 2930a6d42e7dSPeter Dunlap 2931a6d42e7dSPeter Dunlap return (rval); 2932a6d42e7dSPeter Dunlap } 2933