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 /* 2263528ae4SJames Moore * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23a6d42e7dSPeter Dunlap * Use is subject to license terms. 24a6d42e7dSPeter Dunlap */ 25a6d42e7dSPeter Dunlap 26a6d42e7dSPeter Dunlap #include <sys/cpuvar.h> 27a6d42e7dSPeter Dunlap #include <sys/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_calc_rspsn(iscsit_conn_t *ict, idm_pdu_t *resp); 145a6d42e7dSPeter Dunlap 146a6d42e7dSPeter Dunlap static void 147a6d42e7dSPeter Dunlap iscsit_deferred_dispatch(idm_pdu_t *rx_pdu); 148a6d42e7dSPeter Dunlap 149a6d42e7dSPeter Dunlap static void 150a6d42e7dSPeter Dunlap iscsit_deferred(void *rx_pdu_void); 151a6d42e7dSPeter Dunlap 152a6d42e7dSPeter Dunlap static idm_status_t 153a6d42e7dSPeter Dunlap iscsit_conn_accept(idm_conn_t *ic); 154a6d42e7dSPeter Dunlap 155a6d42e7dSPeter Dunlap static idm_status_t 156a6d42e7dSPeter Dunlap iscsit_ffp_enabled(idm_conn_t *ic); 157a6d42e7dSPeter Dunlap 158a6d42e7dSPeter Dunlap static idm_status_t 159a6d42e7dSPeter Dunlap iscsit_ffp_disabled(idm_conn_t *ic, idm_ffp_disable_t disable_class); 160a6d42e7dSPeter Dunlap 161a6d42e7dSPeter Dunlap static idm_status_t 162a6d42e7dSPeter Dunlap iscsit_conn_lost(idm_conn_t *ic); 163a6d42e7dSPeter Dunlap 164a6d42e7dSPeter Dunlap static idm_status_t 165a6d42e7dSPeter Dunlap iscsit_conn_destroy(idm_conn_t *ic); 166a6d42e7dSPeter Dunlap 167a6d42e7dSPeter Dunlap static stmf_data_buf_t * 168a6d42e7dSPeter Dunlap iscsit_dbuf_alloc(scsi_task_t *task, uint32_t size, uint32_t *pminsize, 169a6d42e7dSPeter Dunlap uint32_t flags); 170a6d42e7dSPeter Dunlap 171a6d42e7dSPeter Dunlap static void 172a6d42e7dSPeter Dunlap iscsit_dbuf_free(stmf_dbuf_store_t *ds, stmf_data_buf_t *dbuf); 173a6d42e7dSPeter Dunlap 174a6d42e7dSPeter Dunlap static void 175a6d42e7dSPeter Dunlap iscsit_buf_xfer_cb(idm_buf_t *idb, idm_status_t status); 176a6d42e7dSPeter Dunlap 177a6d42e7dSPeter Dunlap static void 178a6d42e7dSPeter Dunlap iscsit_send_good_status_done(idm_pdu_t *pdu, idm_status_t status); 179a6d42e7dSPeter Dunlap 180a6d42e7dSPeter Dunlap static void 181a6d42e7dSPeter Dunlap iscsit_send_status_done(idm_pdu_t *pdu, idm_status_t status); 182a6d42e7dSPeter Dunlap 183a6d42e7dSPeter Dunlap static stmf_status_t 184a6d42e7dSPeter Dunlap iscsit_idm_to_stmf(idm_status_t idmrc); 185a6d42e7dSPeter Dunlap 186a6d42e7dSPeter Dunlap static iscsit_task_t * 187a6d42e7dSPeter Dunlap iscsit_task_alloc(iscsit_conn_t *ict); 188a6d42e7dSPeter Dunlap 189a6d42e7dSPeter Dunlap static void 190a6d42e7dSPeter Dunlap iscsit_task_free(iscsit_task_t *itask); 191a6d42e7dSPeter Dunlap 192a6d42e7dSPeter Dunlap static iscsit_task_t * 193a6d42e7dSPeter Dunlap iscsit_tm_task_alloc(iscsit_conn_t *ict); 194a6d42e7dSPeter Dunlap 195a6d42e7dSPeter Dunlap static void 196a6d42e7dSPeter Dunlap iscsit_tm_task_free(iscsit_task_t *itask); 197a6d42e7dSPeter Dunlap 198*72cf3143Speter dunlap static idm_status_t 199*72cf3143Speter dunlap iscsit_task_start(iscsit_task_t *itask); 200*72cf3143Speter dunlap 201*72cf3143Speter dunlap static void 202*72cf3143Speter dunlap iscsit_task_done(iscsit_task_t *itask); 203*72cf3143Speter dunlap 204a6d42e7dSPeter Dunlap static int 205a6d42e7dSPeter Dunlap iscsit_status_pdu_constructor(void *pdu_void, void *arg, int flags); 206a6d42e7dSPeter Dunlap 207a6d42e7dSPeter Dunlap static void 208a6d42e7dSPeter Dunlap iscsit_pp_cb(struct stmf_port_provider *pp, int cmd, void *arg, uint32_t flags); 209a6d42e7dSPeter Dunlap 210a6d42e7dSPeter Dunlap static it_cfg_status_t 211a6d42e7dSPeter Dunlap iscsit_config_merge(it_config_t *cfg); 212a6d42e7dSPeter Dunlap 213a6d42e7dSPeter Dunlap static idm_status_t 214a6d42e7dSPeter Dunlap iscsit_login_fail(idm_conn_t *ic); 215a6d42e7dSPeter Dunlap 216*72cf3143Speter dunlap static boolean_t iscsit_cmdsn_in_window(iscsit_conn_t *ict, uint32_t cmdsn); 217*72cf3143Speter dunlap static void iscsit_send_direct_scsi_resp(iscsit_conn_t *ict, idm_pdu_t *rx_pdu, 218*72cf3143Speter dunlap uint8_t response, uint8_t cmd_status); 219*72cf3143Speter dunlap static void iscsit_send_task_mgmt_resp(idm_pdu_t *tm_resp_pdu, 220*72cf3143Speter dunlap uint8_t tm_status); 221*72cf3143Speter dunlap static void iscsit_send_reject(iscsit_conn_t *ict, idm_pdu_t *rejected_pdu, 222*72cf3143Speter dunlap uint8_t reason); 223*72cf3143Speter dunlap 224a6d42e7dSPeter Dunlap int 225a6d42e7dSPeter Dunlap _init(void) 226a6d42e7dSPeter Dunlap { 227a6d42e7dSPeter Dunlap int rc; 228a6d42e7dSPeter Dunlap 229a6d42e7dSPeter Dunlap rw_init(&iscsit_global.global_rwlock, NULL, RW_DRIVER, NULL); 230a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DETACHED; 231a6d42e7dSPeter Dunlap 232a6d42e7dSPeter Dunlap if ((rc = mod_install(&modlinkage)) != 0) { 233a6d42e7dSPeter Dunlap rw_destroy(&iscsit_global.global_rwlock); 234a6d42e7dSPeter Dunlap return (rc); 235a6d42e7dSPeter Dunlap } 236a6d42e7dSPeter Dunlap 237a6d42e7dSPeter Dunlap return (rc); 238a6d42e7dSPeter Dunlap } 239a6d42e7dSPeter Dunlap 240a6d42e7dSPeter Dunlap int 241a6d42e7dSPeter Dunlap _info(struct modinfo *modinfop) 242a6d42e7dSPeter Dunlap { 243a6d42e7dSPeter Dunlap return (mod_info(&modlinkage, modinfop)); 244a6d42e7dSPeter Dunlap } 245a6d42e7dSPeter Dunlap 246a6d42e7dSPeter Dunlap int 247a6d42e7dSPeter Dunlap _fini(void) 248a6d42e7dSPeter Dunlap { 249a6d42e7dSPeter Dunlap int rc; 250a6d42e7dSPeter Dunlap 251a6d42e7dSPeter Dunlap rc = mod_remove(&modlinkage); 252a6d42e7dSPeter Dunlap 253a6d42e7dSPeter Dunlap if (rc == 0) { 254a6d42e7dSPeter Dunlap rw_destroy(&iscsit_global.global_rwlock); 255a6d42e7dSPeter Dunlap } 256a6d42e7dSPeter Dunlap 257a6d42e7dSPeter Dunlap return (rc); 258a6d42e7dSPeter Dunlap } 259a6d42e7dSPeter Dunlap 260a6d42e7dSPeter Dunlap /* 261a6d42e7dSPeter Dunlap * DDI entry points. 262a6d42e7dSPeter Dunlap */ 263a6d42e7dSPeter Dunlap 264a6d42e7dSPeter Dunlap /* ARGSUSED */ 265a6d42e7dSPeter Dunlap static int 266a6d42e7dSPeter Dunlap iscsit_drv_getinfo(dev_info_t *dip, ddi_info_cmd_t cmd, void *arg, 267a6d42e7dSPeter Dunlap void **result) 268a6d42e7dSPeter Dunlap { 269a6d42e7dSPeter Dunlap ulong_t instance = getminor((dev_t)arg); 270a6d42e7dSPeter Dunlap 271a6d42e7dSPeter Dunlap switch (cmd) { 272a6d42e7dSPeter Dunlap case DDI_INFO_DEVT2DEVINFO: 273a6d42e7dSPeter Dunlap *result = iscsit_global.global_dip; 274a6d42e7dSPeter Dunlap return (DDI_SUCCESS); 275a6d42e7dSPeter Dunlap 276a6d42e7dSPeter Dunlap case DDI_INFO_DEVT2INSTANCE: 277a6d42e7dSPeter Dunlap *result = (void *)instance; 278a6d42e7dSPeter Dunlap return (DDI_SUCCESS); 279a6d42e7dSPeter Dunlap 280a6d42e7dSPeter Dunlap default: 281a6d42e7dSPeter Dunlap break; 282a6d42e7dSPeter Dunlap } 283a6d42e7dSPeter Dunlap 284a6d42e7dSPeter Dunlap return (DDI_FAILURE); 285a6d42e7dSPeter Dunlap } 286a6d42e7dSPeter Dunlap 287a6d42e7dSPeter Dunlap static int 288a6d42e7dSPeter Dunlap iscsit_drv_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 289a6d42e7dSPeter Dunlap { 290a6d42e7dSPeter Dunlap if (cmd != DDI_ATTACH) { 291a6d42e7dSPeter Dunlap return (DDI_FAILURE); 292a6d42e7dSPeter Dunlap } 293a6d42e7dSPeter Dunlap 294a6d42e7dSPeter Dunlap if (ddi_get_instance(dip) != 0) { 295a6d42e7dSPeter Dunlap /* we only allow instance 0 to attach */ 296a6d42e7dSPeter Dunlap return (DDI_FAILURE); 297a6d42e7dSPeter Dunlap } 298a6d42e7dSPeter Dunlap 299a6d42e7dSPeter Dunlap /* create the minor node */ 300a6d42e7dSPeter Dunlap if (ddi_create_minor_node(dip, ISCSIT_MODNAME, S_IFCHR, 0, 301a6d42e7dSPeter Dunlap DDI_PSEUDO, 0) != DDI_SUCCESS) { 302a6d42e7dSPeter Dunlap cmn_err(CE_WARN, "iscsit_drv_attach: " 303a6d42e7dSPeter Dunlap "failed creating minor node"); 304a6d42e7dSPeter Dunlap return (DDI_FAILURE); 305a6d42e7dSPeter Dunlap } 306a6d42e7dSPeter Dunlap 307a6d42e7dSPeter Dunlap if (iscsit_init(dip) != IDM_STATUS_SUCCESS) { 308a6d42e7dSPeter Dunlap cmn_err(CE_WARN, "iscsit_drv_attach: " 309a6d42e7dSPeter Dunlap "failed to initialize"); 310a6d42e7dSPeter Dunlap ddi_remove_minor_node(dip, NULL); 311a6d42e7dSPeter Dunlap return (DDI_FAILURE); 312a6d42e7dSPeter Dunlap } 313a6d42e7dSPeter Dunlap 314a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 315a6d42e7dSPeter Dunlap iscsit_global.global_dip = dip; 316a6d42e7dSPeter Dunlap 317a6d42e7dSPeter Dunlap return (DDI_SUCCESS); 318a6d42e7dSPeter Dunlap } 319a6d42e7dSPeter Dunlap 320a6d42e7dSPeter Dunlap /*ARGSUSED*/ 321a6d42e7dSPeter Dunlap static int 322a6d42e7dSPeter Dunlap iscsit_drv_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 323a6d42e7dSPeter Dunlap { 324a6d42e7dSPeter Dunlap if (cmd != DDI_DETACH) 325a6d42e7dSPeter Dunlap return (DDI_FAILURE); 326a6d42e7dSPeter Dunlap 327a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_LOCK(RW_WRITER); 328a6d42e7dSPeter Dunlap if (iscsit_drv_busy()) { 329a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 330a6d42e7dSPeter Dunlap return (EBUSY); 331a6d42e7dSPeter Dunlap } 332a6d42e7dSPeter Dunlap 333a6d42e7dSPeter Dunlap iscsit_global.global_dip = NULL; 334a6d42e7dSPeter Dunlap ddi_remove_minor_node(dip, NULL); 335a6d42e7dSPeter Dunlap 336a6d42e7dSPeter Dunlap ldi_ident_release(iscsit_global.global_li); 337a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DETACHED; 338a6d42e7dSPeter Dunlap 339a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 340a6d42e7dSPeter Dunlap 341a6d42e7dSPeter Dunlap return (DDI_SUCCESS); 342a6d42e7dSPeter Dunlap } 343a6d42e7dSPeter Dunlap 344a6d42e7dSPeter Dunlap /*ARGSUSED*/ 345a6d42e7dSPeter Dunlap static int 346a6d42e7dSPeter Dunlap iscsit_drv_open(dev_t *devp, int flag, int otyp, cred_t *credp) 347a6d42e7dSPeter Dunlap { 348a6d42e7dSPeter Dunlap return (0); 349a6d42e7dSPeter Dunlap } 350a6d42e7dSPeter Dunlap 351a6d42e7dSPeter Dunlap /* ARGSUSED */ 352a6d42e7dSPeter Dunlap static int 353a6d42e7dSPeter Dunlap iscsit_drv_close(dev_t dev, int flag, int otyp, cred_t *credp) 354a6d42e7dSPeter Dunlap { 355a6d42e7dSPeter Dunlap return (0); 356a6d42e7dSPeter Dunlap } 357a6d42e7dSPeter Dunlap 358a6d42e7dSPeter Dunlap static boolean_t 359a6d42e7dSPeter Dunlap iscsit_drv_busy(void) 360a6d42e7dSPeter Dunlap { 361a6d42e7dSPeter Dunlap switch (iscsit_global.global_svc_state) { 362a6d42e7dSPeter Dunlap case ISE_DISABLED: 363a6d42e7dSPeter Dunlap case ISE_DETACHED: 364a6d42e7dSPeter Dunlap return (B_FALSE); 365a6d42e7dSPeter Dunlap default: 366a6d42e7dSPeter Dunlap return (B_TRUE); 367a6d42e7dSPeter Dunlap } 368a6d42e7dSPeter Dunlap /* NOTREACHED */ 369a6d42e7dSPeter Dunlap } 370a6d42e7dSPeter Dunlap 371a6d42e7dSPeter Dunlap /* ARGSUSED */ 372a6d42e7dSPeter Dunlap static int 373a6d42e7dSPeter Dunlap iscsit_drv_ioctl(dev_t drv, int cmd, intptr_t argp, int flag, cred_t *cred, 374a6d42e7dSPeter Dunlap int *retval) 375a6d42e7dSPeter Dunlap { 376a6d42e7dSPeter Dunlap iscsit_ioc_set_config_t setcfg; 377a6d42e7dSPeter Dunlap iscsit_ioc_set_config32_t setcfg32; 378a6d42e7dSPeter Dunlap /* iscsit_ioc_get_config_t getcfg; */ 379a6d42e7dSPeter Dunlap char *cfg_pnvlist; 380a6d42e7dSPeter Dunlap nvlist_t *cfg_nvlist; 381a6d42e7dSPeter Dunlap it_config_t *cfg; 382a6d42e7dSPeter Dunlap idm_status_t idmrc; 383a6d42e7dSPeter Dunlap int rc = 0; 384a6d42e7dSPeter Dunlap 385a6d42e7dSPeter Dunlap if (drv_priv(cred) != 0) { 386a6d42e7dSPeter Dunlap return (EPERM); 387a6d42e7dSPeter Dunlap } 388a6d42e7dSPeter Dunlap 389a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_LOCK(RW_WRITER); 390a6d42e7dSPeter Dunlap 391a6d42e7dSPeter Dunlap /* 392a6d42e7dSPeter Dunlap * Validate ioctl requests against global service state 393a6d42e7dSPeter Dunlap */ 394a6d42e7dSPeter Dunlap switch (iscsit_global.global_svc_state) { 395a6d42e7dSPeter Dunlap case ISE_ENABLED: 396a6d42e7dSPeter Dunlap if (cmd == ISCSIT_IOC_DISABLE_SVC) { 397a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLING; 398a6d42e7dSPeter Dunlap } else if (cmd == ISCSIT_IOC_ENABLE_SVC) { 399a6d42e7dSPeter Dunlap /* Already enabled */ 400a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 401a6d42e7dSPeter Dunlap return (0); 402a6d42e7dSPeter Dunlap } else { 403a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_BUSY; 404a6d42e7dSPeter Dunlap } 405a6d42e7dSPeter Dunlap break; 406a6d42e7dSPeter Dunlap case ISE_DISABLED: 407a6d42e7dSPeter Dunlap if (cmd == ISCSIT_IOC_ENABLE_SVC) { 408a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_ENABLING; 409a6d42e7dSPeter Dunlap } else if (cmd == ISCSIT_IOC_DISABLE_SVC) { 410a6d42e7dSPeter Dunlap /* Already disabled */ 411a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 412a6d42e7dSPeter Dunlap return (0); 413a6d42e7dSPeter Dunlap } else { 414a6d42e7dSPeter Dunlap rc = EFAULT; 415a6d42e7dSPeter Dunlap } 416a6d42e7dSPeter Dunlap break; 417a6d42e7dSPeter Dunlap case ISE_ENABLING: 418a6d42e7dSPeter Dunlap case ISE_DISABLING: 419a6d42e7dSPeter Dunlap rc = EAGAIN; 420a6d42e7dSPeter Dunlap break; 421a6d42e7dSPeter Dunlap case ISE_DETACHED: 422a6d42e7dSPeter Dunlap default: 423a6d42e7dSPeter Dunlap rc = EFAULT; 424a6d42e7dSPeter Dunlap break; 425a6d42e7dSPeter Dunlap } 426a6d42e7dSPeter Dunlap 427a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 428a6d42e7dSPeter Dunlap if (rc != 0) 429a6d42e7dSPeter Dunlap return (rc); 430a6d42e7dSPeter Dunlap 431a6d42e7dSPeter Dunlap /* Handle ioctl request (enable/disable have already been handled) */ 432a6d42e7dSPeter Dunlap switch (cmd) { 433a6d42e7dSPeter Dunlap case ISCSIT_IOC_SET_CONFIG: 434a6d42e7dSPeter Dunlap switch (ddi_model_convert_from(flag & FMODELS)) { 435a6d42e7dSPeter Dunlap case DDI_MODEL_ILP32: 436a6d42e7dSPeter Dunlap if (ddi_copyin((void *)argp, &setcfg32, 437a6d42e7dSPeter Dunlap sizeof (iscsit_ioc_set_config32_t), flag) != 0) 438a6d42e7dSPeter Dunlap return (EFAULT); 439a6d42e7dSPeter Dunlap 440a6d42e7dSPeter Dunlap setcfg.set_cfg_pnvlist = 441a6d42e7dSPeter Dunlap (char *)((uintptr_t)setcfg32.set_cfg_pnvlist); 442a6d42e7dSPeter Dunlap setcfg.set_cfg_vers = setcfg32.set_cfg_vers; 443a6d42e7dSPeter Dunlap setcfg.set_cfg_pnvlist_len = 444a6d42e7dSPeter Dunlap setcfg32.set_cfg_pnvlist_len; 445a6d42e7dSPeter Dunlap break; 446a6d42e7dSPeter Dunlap case DDI_MODEL_NONE: 447a6d42e7dSPeter Dunlap if (ddi_copyin((void *)argp, &setcfg, 448a6d42e7dSPeter Dunlap sizeof (iscsit_ioc_set_config_t), flag) != 0) 449a6d42e7dSPeter Dunlap return (EFAULT); 450a6d42e7dSPeter Dunlap break; 451a6d42e7dSPeter Dunlap } 452a6d42e7dSPeter Dunlap 453a6d42e7dSPeter Dunlap /* Check API version */ 454a6d42e7dSPeter Dunlap if (setcfg.set_cfg_vers != ISCSIT_API_VERS0) { 455a6d42e7dSPeter Dunlap return (EINVAL); 456a6d42e7dSPeter Dunlap } 457a6d42e7dSPeter Dunlap 458a6d42e7dSPeter Dunlap /* Config is in packed nvlist format so unpack it */ 459a6d42e7dSPeter Dunlap cfg_pnvlist = kmem_alloc(setcfg.set_cfg_pnvlist_len, 460a6d42e7dSPeter Dunlap KM_SLEEP); 461a6d42e7dSPeter Dunlap ASSERT(cfg_pnvlist != NULL); 462a6d42e7dSPeter Dunlap 463a6d42e7dSPeter Dunlap if (ddi_copyin(setcfg.set_cfg_pnvlist, cfg_pnvlist, 464a6d42e7dSPeter Dunlap setcfg.set_cfg_pnvlist_len, flag) != 0) { 465a6d42e7dSPeter Dunlap kmem_free(cfg_pnvlist, setcfg.set_cfg_pnvlist_len); 466a6d42e7dSPeter Dunlap return (EFAULT); 467a6d42e7dSPeter Dunlap } 468a6d42e7dSPeter Dunlap 469a6d42e7dSPeter Dunlap if (nvlist_unpack(cfg_pnvlist, setcfg.set_cfg_pnvlist_len, 470a6d42e7dSPeter Dunlap &cfg_nvlist, KM_SLEEP) != 0) { 471a6d42e7dSPeter Dunlap kmem_free(cfg_pnvlist, setcfg.set_cfg_pnvlist_len); 472a6d42e7dSPeter Dunlap return (EINVAL); 473a6d42e7dSPeter Dunlap } 474a6d42e7dSPeter Dunlap 475a6d42e7dSPeter Dunlap /* Translate nvlist */ 476a6d42e7dSPeter Dunlap if (it_nv_to_config(cfg_nvlist, &cfg) != 0) { 477a6d42e7dSPeter Dunlap cmn_err(CE_WARN, "Configuration is invalid"); 478a6d42e7dSPeter Dunlap kmem_free(cfg_pnvlist, setcfg.set_cfg_pnvlist_len); 479a6d42e7dSPeter Dunlap nvlist_free(cfg_nvlist); 480a6d42e7dSPeter Dunlap return (EINVAL); 481a6d42e7dSPeter Dunlap } 482a6d42e7dSPeter Dunlap 483a6d42e7dSPeter Dunlap /* Update config */ 484a6d42e7dSPeter Dunlap if (iscsit_config_merge(cfg) != 0) { 485a6d42e7dSPeter Dunlap kmem_free(cfg_pnvlist, setcfg.set_cfg_pnvlist_len); 486a6d42e7dSPeter Dunlap nvlist_free(cfg_nvlist); 487a6d42e7dSPeter Dunlap return (EIO); 488a6d42e7dSPeter Dunlap } 489a6d42e7dSPeter Dunlap 490a6d42e7dSPeter Dunlap it_config_free_cmn(cfg); 491a6d42e7dSPeter Dunlap kmem_free(cfg_pnvlist, setcfg.set_cfg_pnvlist_len); 492a6d42e7dSPeter Dunlap nvlist_free(cfg_nvlist); 493a6d42e7dSPeter Dunlap 494a6d42e7dSPeter Dunlap /* 495a6d42e7dSPeter Dunlap * Now that the reconfig is complete set our state back to 496a6d42e7dSPeter Dunlap * enabled. 497a6d42e7dSPeter Dunlap */ 498a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_LOCK(RW_WRITER); 499a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_ENABLED; 500a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 501a6d42e7dSPeter Dunlap break; 502a6d42e7dSPeter Dunlap case ISCSIT_IOC_ENABLE_SVC: { 503a6d42e7dSPeter Dunlap iscsit_hostinfo_t hostinfo; 504a6d42e7dSPeter Dunlap 505a6d42e7dSPeter Dunlap if (ddi_copyin((void *)argp, &hostinfo.length, 506a6d42e7dSPeter Dunlap sizeof (hostinfo.length), flag) != 0) { 507a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 508a6d42e7dSPeter Dunlap return (EFAULT); 509a6d42e7dSPeter Dunlap } 510a6d42e7dSPeter Dunlap 511a6d42e7dSPeter Dunlap if (hostinfo.length > sizeof (hostinfo.fqhn)) 512a6d42e7dSPeter Dunlap hostinfo.length = sizeof (hostinfo.fqhn); 513a6d42e7dSPeter Dunlap 514a6d42e7dSPeter Dunlap if (ddi_copyin((void *)((caddr_t)argp + 515a6d42e7dSPeter Dunlap sizeof (hostinfo.length)), &hostinfo.fqhn, 516a6d42e7dSPeter Dunlap hostinfo.length, flag) != 0) { 517a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 518a6d42e7dSPeter Dunlap return (EFAULT); 519a6d42e7dSPeter Dunlap } 520a6d42e7dSPeter Dunlap 521a6d42e7dSPeter Dunlap idmrc = iscsit_enable_svc(&hostinfo); 522a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_LOCK(RW_WRITER); 523a6d42e7dSPeter Dunlap if (idmrc == IDM_STATUS_SUCCESS) { 524a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_ENABLED; 525a6d42e7dSPeter Dunlap } else { 526a6d42e7dSPeter Dunlap rc = EIO; 527a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 528a6d42e7dSPeter Dunlap } 529a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 530a6d42e7dSPeter Dunlap break; 531a6d42e7dSPeter Dunlap } 532a6d42e7dSPeter Dunlap case ISCSIT_IOC_DISABLE_SVC: 533a6d42e7dSPeter Dunlap iscsit_disable_svc(); 534a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_LOCK(RW_WRITER); 535a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 536a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 537a6d42e7dSPeter Dunlap break; 538a6d42e7dSPeter Dunlap default: 539a6d42e7dSPeter Dunlap rc = EINVAL; 540a6d42e7dSPeter Dunlap } 541a6d42e7dSPeter Dunlap 542a6d42e7dSPeter Dunlap /* Don't forget to clear ISE_BUSY state */ 543a6d42e7dSPeter Dunlap ASSERT(iscsit_global.global_svc_state != ISE_BUSY); 544a6d42e7dSPeter Dunlap 545a6d42e7dSPeter Dunlap return (rc); 546a6d42e7dSPeter Dunlap } 547a6d42e7dSPeter Dunlap 548a6d42e7dSPeter Dunlap static idm_status_t 549a6d42e7dSPeter Dunlap iscsit_init(dev_info_t *dip) 550a6d42e7dSPeter Dunlap { 551a6d42e7dSPeter Dunlap int rc; 552a6d42e7dSPeter Dunlap 553a6d42e7dSPeter Dunlap rc = ldi_ident_from_dip(dip, &iscsit_global.global_li); 554a6d42e7dSPeter Dunlap ASSERT(rc == 0); /* Failure indicates invalid argument */ 555a6d42e7dSPeter Dunlap 556a6d42e7dSPeter Dunlap iscsit_global.global_svc_state = ISE_DISABLED; 557a6d42e7dSPeter Dunlap 558a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 559a6d42e7dSPeter Dunlap } 560a6d42e7dSPeter Dunlap 561a6d42e7dSPeter Dunlap /* 562a6d42e7dSPeter Dunlap * iscsit_enable_svc 563a6d42e7dSPeter Dunlap * 564a6d42e7dSPeter Dunlap * registers all the configured targets and target portals with STMF 565a6d42e7dSPeter Dunlap */ 566a6d42e7dSPeter Dunlap static idm_status_t 567a6d42e7dSPeter Dunlap iscsit_enable_svc(iscsit_hostinfo_t *hostinfo) 568a6d42e7dSPeter Dunlap { 569a6d42e7dSPeter Dunlap stmf_port_provider_t *pp; 570a6d42e7dSPeter Dunlap stmf_dbuf_store_t *dbuf_store; 571a6d42e7dSPeter Dunlap boolean_t did_iscsit_isns_init; 572a6d42e7dSPeter Dunlap idm_status_t retval = IDM_STATUS_SUCCESS; 573a6d42e7dSPeter Dunlap 574a6d42e7dSPeter Dunlap ASSERT(iscsit_global.global_svc_state == ISE_ENABLING); 575a6d42e7dSPeter Dunlap 576a6d42e7dSPeter Dunlap /* 577a6d42e7dSPeter Dunlap * Make sure that can tell if we have partially allocated 578a6d42e7dSPeter Dunlap * in case we need to exit and tear down anything allocated. 579a6d42e7dSPeter Dunlap */ 580a6d42e7dSPeter Dunlap iscsit_global.global_tsih_pool = NULL; 581a6d42e7dSPeter Dunlap iscsit_global.global_dbuf_store = NULL; 582a6d42e7dSPeter Dunlap iscsit_status_pdu_cache = NULL; 583a6d42e7dSPeter Dunlap pp = NULL; 584a6d42e7dSPeter Dunlap iscsit_global.global_pp = NULL; 585a6d42e7dSPeter Dunlap iscsit_global.global_default_tpg = NULL; 586a6d42e7dSPeter Dunlap did_iscsit_isns_init = B_FALSE; 587a6d42e7dSPeter Dunlap iscsit_global.global_dispatch_taskq = NULL; 588a6d42e7dSPeter Dunlap 589a6d42e7dSPeter Dunlap /* Setup remaining fields in iscsit_global_t */ 590a6d42e7dSPeter Dunlap idm_refcnt_init(&iscsit_global.global_refcnt, 591a6d42e7dSPeter Dunlap &iscsit_global); 592a6d42e7dSPeter Dunlap 593a6d42e7dSPeter Dunlap avl_create(&iscsit_global.global_discovery_sessions, 594a6d42e7dSPeter Dunlap iscsit_sess_avl_compare, sizeof (iscsit_sess_t), 595a6d42e7dSPeter Dunlap offsetof(iscsit_sess_t, ist_tgt_ln)); 596a6d42e7dSPeter Dunlap 597a6d42e7dSPeter Dunlap avl_create(&iscsit_global.global_target_list, 598a6d42e7dSPeter Dunlap iscsit_tgt_avl_compare, sizeof (iscsit_tgt_t), 599a6d42e7dSPeter Dunlap offsetof(iscsit_tgt_t, target_global_ln)); 600a6d42e7dSPeter Dunlap 601a6d42e7dSPeter Dunlap list_create(&iscsit_global.global_deleted_target_list, 602a6d42e7dSPeter Dunlap sizeof (iscsit_tgt_t), 603a6d42e7dSPeter Dunlap offsetof(iscsit_tgt_t, target_global_deleted_ln)); 604a6d42e7dSPeter Dunlap 605a6d42e7dSPeter Dunlap avl_create(&iscsit_global.global_tpg_list, 606a6d42e7dSPeter Dunlap iscsit_tpg_avl_compare, sizeof (iscsit_tpg_t), 607a6d42e7dSPeter Dunlap offsetof(iscsit_tpg_t, tpg_global_ln)); 608a6d42e7dSPeter Dunlap 609a6d42e7dSPeter Dunlap avl_create(&iscsit_global.global_ini_list, 610a6d42e7dSPeter Dunlap iscsit_ini_avl_compare, sizeof (iscsit_ini_t), 611a6d42e7dSPeter Dunlap offsetof(iscsit_ini_t, ini_global_ln)); 612a6d42e7dSPeter Dunlap 613a6d42e7dSPeter Dunlap iscsit_global.global_tsih_pool = vmem_create("iscsit_tsih_pool", 614a6d42e7dSPeter Dunlap (void *)1, ISCSI_MAX_TSIH, 1, NULL, NULL, NULL, 0, 615a6d42e7dSPeter Dunlap VM_SLEEP | VMC_IDENTIFIER); 616a6d42e7dSPeter Dunlap 617a6d42e7dSPeter Dunlap /* 618a6d42e7dSPeter Dunlap * Setup STMF dbuf store. Our buffers are bound to a specific 619a6d42e7dSPeter Dunlap * connection so we really can't let STMF cache buffers for us. 620a6d42e7dSPeter Dunlap * Consequently we'll just allocate one global buffer store. 621a6d42e7dSPeter Dunlap */ 622a6d42e7dSPeter Dunlap dbuf_store = stmf_alloc(STMF_STRUCT_DBUF_STORE, 0, 0); 623a6d42e7dSPeter Dunlap if (dbuf_store == NULL) { 624a6d42e7dSPeter Dunlap retval = IDM_STATUS_FAIL; 625a6d42e7dSPeter Dunlap goto tear_down_and_return; 626a6d42e7dSPeter Dunlap } 627a6d42e7dSPeter Dunlap dbuf_store->ds_alloc_data_buf = iscsit_dbuf_alloc; 628a6d42e7dSPeter Dunlap dbuf_store->ds_free_data_buf = iscsit_dbuf_free; 629a6d42e7dSPeter Dunlap dbuf_store->ds_port_private = NULL; 630a6d42e7dSPeter Dunlap iscsit_global.global_dbuf_store = dbuf_store; 631a6d42e7dSPeter Dunlap 632a6d42e7dSPeter Dunlap /* Status PDU cache */ 633a6d42e7dSPeter Dunlap iscsit_status_pdu_cache = kmem_cache_create("iscsit_status_pdu_cache", 634a6d42e7dSPeter Dunlap sizeof (idm_pdu_t) + sizeof (iscsi_scsi_rsp_hdr_t), 8, 635a6d42e7dSPeter Dunlap &iscsit_status_pdu_constructor, 636a6d42e7dSPeter Dunlap NULL, NULL, NULL, NULL, KM_SLEEP); 637a6d42e7dSPeter Dunlap 638a6d42e7dSPeter Dunlap /* Default TPG and portal */ 639a6d42e7dSPeter Dunlap iscsit_global.global_default_tpg = iscsit_tpg_createdefault(); 640a6d42e7dSPeter Dunlap if (iscsit_global.global_default_tpg == NULL) { 641a6d42e7dSPeter Dunlap retval = IDM_STATUS_FAIL; 642a6d42e7dSPeter Dunlap goto tear_down_and_return; 643a6d42e7dSPeter Dunlap } 644a6d42e7dSPeter Dunlap 645a6d42e7dSPeter Dunlap /* initialize isns client */ 646a6d42e7dSPeter Dunlap (void) iscsit_isns_init(hostinfo); 647a6d42e7dSPeter Dunlap did_iscsit_isns_init = B_TRUE; 648a6d42e7dSPeter Dunlap 649a6d42e7dSPeter Dunlap /* Register port provider */ 650a6d42e7dSPeter Dunlap pp = stmf_alloc(STMF_STRUCT_PORT_PROVIDER, 0, 0); 651a6d42e7dSPeter Dunlap if (pp == NULL) { 652a6d42e7dSPeter Dunlap retval = IDM_STATUS_FAIL; 653a6d42e7dSPeter Dunlap goto tear_down_and_return; 654a6d42e7dSPeter Dunlap } 655a6d42e7dSPeter Dunlap 656a6d42e7dSPeter Dunlap pp->pp_portif_rev = PORTIF_REV_1; 657a6d42e7dSPeter Dunlap pp->pp_instance = 0; 658a6d42e7dSPeter Dunlap pp->pp_name = ISCSIT_MODNAME; 659a6d42e7dSPeter Dunlap pp->pp_cb = iscsit_pp_cb; 660a6d42e7dSPeter Dunlap 661a6d42e7dSPeter Dunlap iscsit_global.global_pp = pp; 662a6d42e7dSPeter Dunlap 663a6d42e7dSPeter Dunlap 664a6d42e7dSPeter Dunlap if (stmf_register_port_provider(pp) != STMF_SUCCESS) { 665a6d42e7dSPeter Dunlap retval = IDM_STATUS_FAIL; 666a6d42e7dSPeter Dunlap goto tear_down_and_return; 667a6d42e7dSPeter Dunlap } 668a6d42e7dSPeter Dunlap 669a6d42e7dSPeter Dunlap iscsit_global.global_dispatch_taskq = taskq_create("iscsit_dispatch", 670a6d42e7dSPeter Dunlap 1, minclsyspri, 16, 16, TASKQ_PREPOPULATE); 671a6d42e7dSPeter Dunlap 672a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 673a6d42e7dSPeter Dunlap 674a6d42e7dSPeter Dunlap tear_down_and_return: 675a6d42e7dSPeter Dunlap 676a6d42e7dSPeter Dunlap if (iscsit_global.global_dispatch_taskq) { 677a6d42e7dSPeter Dunlap taskq_destroy(iscsit_global.global_dispatch_taskq); 678a6d42e7dSPeter Dunlap iscsit_global.global_dispatch_taskq = NULL; 679a6d42e7dSPeter Dunlap } 680a6d42e7dSPeter Dunlap 681a6d42e7dSPeter Dunlap if (did_iscsit_isns_init) 682a6d42e7dSPeter Dunlap iscsit_isns_fini(); 683a6d42e7dSPeter Dunlap 684a6d42e7dSPeter Dunlap if (iscsit_global.global_default_tpg) { 685a6d42e7dSPeter Dunlap iscsit_tpg_destroydefault(iscsit_global.global_default_tpg); 686a6d42e7dSPeter Dunlap iscsit_global.global_default_tpg = NULL; 687a6d42e7dSPeter Dunlap } 688a6d42e7dSPeter Dunlap 689a6d42e7dSPeter Dunlap if (iscsit_global.global_pp) 690a6d42e7dSPeter Dunlap iscsit_global.global_pp = NULL; 691a6d42e7dSPeter Dunlap 692a6d42e7dSPeter Dunlap if (pp) 693a6d42e7dSPeter Dunlap stmf_free(pp); 694a6d42e7dSPeter Dunlap 695a6d42e7dSPeter Dunlap if (iscsit_status_pdu_cache) { 696a6d42e7dSPeter Dunlap kmem_cache_destroy(iscsit_status_pdu_cache); 697a6d42e7dSPeter Dunlap iscsit_status_pdu_cache = NULL; 698a6d42e7dSPeter Dunlap } 699a6d42e7dSPeter Dunlap 700a6d42e7dSPeter Dunlap if (iscsit_global.global_dbuf_store) { 701a6d42e7dSPeter Dunlap stmf_free(iscsit_global.global_dbuf_store); 702a6d42e7dSPeter Dunlap iscsit_global.global_dbuf_store = NULL; 703a6d42e7dSPeter Dunlap } 704a6d42e7dSPeter Dunlap 705a6d42e7dSPeter Dunlap if (iscsit_global.global_tsih_pool) { 706a6d42e7dSPeter Dunlap vmem_destroy(iscsit_global.global_tsih_pool); 707a6d42e7dSPeter Dunlap iscsit_global.global_tsih_pool = NULL; 708a6d42e7dSPeter Dunlap } 709a6d42e7dSPeter Dunlap 710a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_ini_list); 711a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_tpg_list); 712a6d42e7dSPeter Dunlap list_destroy(&iscsit_global.global_deleted_target_list); 713a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_target_list); 714a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_discovery_sessions); 715a6d42e7dSPeter Dunlap 716a6d42e7dSPeter Dunlap idm_refcnt_destroy(&iscsit_global.global_refcnt); 717a6d42e7dSPeter Dunlap 718a6d42e7dSPeter Dunlap return (retval); 719a6d42e7dSPeter Dunlap } 720a6d42e7dSPeter Dunlap 721a6d42e7dSPeter Dunlap /* 722a6d42e7dSPeter Dunlap * iscsit_disable_svc 723a6d42e7dSPeter Dunlap * 724a6d42e7dSPeter Dunlap * clean up all existing connections and deregister targets from STMF 725a6d42e7dSPeter Dunlap */ 726a6d42e7dSPeter Dunlap static void 727a6d42e7dSPeter Dunlap iscsit_disable_svc(void) 728a6d42e7dSPeter Dunlap { 729a6d42e7dSPeter Dunlap iscsit_sess_t *sess; 730a6d42e7dSPeter Dunlap 731a6d42e7dSPeter Dunlap ASSERT(iscsit_global.global_svc_state == ISE_DISABLING); 732a6d42e7dSPeter Dunlap 733a6d42e7dSPeter Dunlap /* tear down discovery sessions */ 734a6d42e7dSPeter Dunlap for (sess = avl_first(&iscsit_global.global_discovery_sessions); 735a6d42e7dSPeter Dunlap sess != NULL; 736a6d42e7dSPeter Dunlap sess = AVL_NEXT(&iscsit_global.global_discovery_sessions, sess)) 737a6d42e7dSPeter Dunlap iscsit_sess_close(sess); 738a6d42e7dSPeter Dunlap 739a6d42e7dSPeter Dunlap /* 740a6d42e7dSPeter Dunlap * Passing NULL to iscsit_config_merge tells it to go to an empty 741a6d42e7dSPeter Dunlap * config. 742a6d42e7dSPeter Dunlap */ 743a6d42e7dSPeter Dunlap (void) iscsit_config_merge(NULL); 744a6d42e7dSPeter Dunlap 745a6d42e7dSPeter Dunlap /* 746a6d42e7dSPeter Dunlap * Wait until there are no more global references 747a6d42e7dSPeter Dunlap */ 748a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(&iscsit_global.global_refcnt); 749a6d42e7dSPeter Dunlap idm_refcnt_destroy(&iscsit_global.global_refcnt); 750a6d42e7dSPeter Dunlap 751a6d42e7dSPeter Dunlap /* 752a6d42e7dSPeter Dunlap * Default TPG must be destroyed after global_refcnt is 0. 753a6d42e7dSPeter Dunlap */ 754a6d42e7dSPeter Dunlap iscsit_tpg_destroydefault(iscsit_global.global_default_tpg); 755a6d42e7dSPeter Dunlap 756a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_discovery_sessions); 757a6d42e7dSPeter Dunlap list_destroy(&iscsit_global.global_deleted_target_list); 758a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_target_list); 759a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_tpg_list); 760a6d42e7dSPeter Dunlap avl_destroy(&iscsit_global.global_ini_list); 761a6d42e7dSPeter Dunlap 762a6d42e7dSPeter Dunlap taskq_destroy(iscsit_global.global_dispatch_taskq); 763a6d42e7dSPeter Dunlap 764a6d42e7dSPeter Dunlap iscsit_isns_fini(); 765a6d42e7dSPeter Dunlap 766a6d42e7dSPeter Dunlap stmf_free(iscsit_global.global_dbuf_store); 767a6d42e7dSPeter Dunlap iscsit_global.global_dbuf_store = NULL; 768a6d42e7dSPeter Dunlap 769a6d42e7dSPeter Dunlap (void) stmf_deregister_port_provider(iscsit_global.global_pp); 770a6d42e7dSPeter Dunlap stmf_free(iscsit_global.global_pp); 771a6d42e7dSPeter Dunlap iscsit_global.global_pp = NULL; 772a6d42e7dSPeter Dunlap 773a6d42e7dSPeter Dunlap kmem_cache_destroy(iscsit_status_pdu_cache); 774a6d42e7dSPeter Dunlap iscsit_status_pdu_cache = NULL; 775a6d42e7dSPeter Dunlap 776a6d42e7dSPeter Dunlap vmem_destroy(iscsit_global.global_tsih_pool); 777a6d42e7dSPeter Dunlap iscsit_global.global_tsih_pool = NULL; 778a6d42e7dSPeter Dunlap } 779a6d42e7dSPeter Dunlap 780a6d42e7dSPeter Dunlap void 781a6d42e7dSPeter Dunlap iscsit_global_hold() 782a6d42e7dSPeter Dunlap { 783a6d42e7dSPeter Dunlap idm_refcnt_hold(&iscsit_global.global_refcnt); 784a6d42e7dSPeter Dunlap } 785a6d42e7dSPeter Dunlap 786a6d42e7dSPeter Dunlap void 787a6d42e7dSPeter Dunlap iscsit_global_rele() 788a6d42e7dSPeter Dunlap { 789a6d42e7dSPeter Dunlap idm_refcnt_rele(&iscsit_global.global_refcnt); 790a6d42e7dSPeter Dunlap } 791a6d42e7dSPeter Dunlap 792a6d42e7dSPeter Dunlap void 793a6d42e7dSPeter Dunlap iscsit_global_wait_ref() 794a6d42e7dSPeter Dunlap { 795a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(&iscsit_global.global_refcnt); 796a6d42e7dSPeter Dunlap } 797a6d42e7dSPeter Dunlap 798a6d42e7dSPeter Dunlap /* 799a6d42e7dSPeter Dunlap * IDM callbacks 800a6d42e7dSPeter Dunlap */ 801a6d42e7dSPeter Dunlap 802a6d42e7dSPeter Dunlap /*ARGSUSED*/ 803a6d42e7dSPeter Dunlap void 804a6d42e7dSPeter Dunlap iscsit_rx_pdu(idm_conn_t *ic, idm_pdu_t *rx_pdu) 805a6d42e7dSPeter Dunlap { 806a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 807a6d42e7dSPeter Dunlap switch (IDM_PDU_OPCODE(rx_pdu)) { 808a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_CMD: 809a6d42e7dSPeter Dunlap ASSERT(0); /* Shouldn't happen */ 810a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 811a6d42e7dSPeter Dunlap break; 812a6d42e7dSPeter Dunlap case ISCSI_OP_SNACK_CMD: 813a6d42e7dSPeter Dunlap /* 814a6d42e7dSPeter Dunlap * We'll need to handle this when we support ERL1/2. For 815a6d42e7dSPeter Dunlap * now we treat it as a protocol error. 816a6d42e7dSPeter Dunlap */ 817a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 818a6d42e7dSPeter Dunlap idm_conn_event(ic, CE_TRANSPORT_FAIL, NULL); 819a6d42e7dSPeter Dunlap break; 820a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_TASK_MGT_MSG: 821a6d42e7dSPeter Dunlap iscsit_set_cmdsn(ict, rx_pdu); 822a6d42e7dSPeter Dunlap iscsit_op_scsi_task_mgmt(ict, rx_pdu); 823a6d42e7dSPeter Dunlap break; 824a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_OUT: 825a6d42e7dSPeter Dunlap case ISCSI_OP_LOGIN_CMD: 826a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_CMD: 827a6d42e7dSPeter Dunlap case ISCSI_OP_LOGOUT_CMD: 828a6d42e7dSPeter Dunlap /* 829a6d42e7dSPeter Dunlap * If/when we switch to userland processing these PDU's 830a6d42e7dSPeter Dunlap * will be handled by iscsitd. 831a6d42e7dSPeter Dunlap */ 832a6d42e7dSPeter Dunlap iscsit_deferred_dispatch(rx_pdu); 833a6d42e7dSPeter Dunlap break; 834a6d42e7dSPeter Dunlap default: 835a6d42e7dSPeter Dunlap /* Protocol error */ 836a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 837a6d42e7dSPeter Dunlap idm_conn_event(ic, CE_TRANSPORT_FAIL, NULL); 838a6d42e7dSPeter Dunlap break; 839a6d42e7dSPeter Dunlap } 840a6d42e7dSPeter Dunlap } 841a6d42e7dSPeter Dunlap 842a6d42e7dSPeter Dunlap /*ARGSUSED*/ 843a6d42e7dSPeter Dunlap void 844a6d42e7dSPeter Dunlap iscsit_rx_pdu_error(idm_conn_t *ic, idm_pdu_t *rx_pdu, idm_status_t status) 845a6d42e7dSPeter Dunlap { 846a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 847a6d42e7dSPeter Dunlap } 848a6d42e7dSPeter Dunlap 849a6d42e7dSPeter Dunlap void 850a6d42e7dSPeter Dunlap iscsit_task_aborted(idm_task_t *idt, idm_status_t status) 851a6d42e7dSPeter Dunlap { 852a6d42e7dSPeter Dunlap iscsit_task_t *itask = idt->idt_private; 853a6d42e7dSPeter Dunlap 854a6d42e7dSPeter Dunlap switch (status) { 855a6d42e7dSPeter Dunlap case IDM_STATUS_SUSPENDED: 856a6d42e7dSPeter Dunlap break; 857a6d42e7dSPeter Dunlap case IDM_STATUS_ABORTED: 858a6d42e7dSPeter Dunlap mutex_enter(&itask->it_mutex); 859a6d42e7dSPeter Dunlap itask->it_aborted = B_TRUE; 860bf604c64SPeter Dunlap /* 861bf604c64SPeter Dunlap * We rely on the fact that STMF tracks outstanding 862bf604c64SPeter Dunlap * buffer transfers and will free all of our buffers 863bf604c64SPeter Dunlap * before freeing the task so we don't need to 864bf604c64SPeter Dunlap * explicitly free the buffers from iscsit/idm 865bf604c64SPeter Dunlap */ 866a6d42e7dSPeter Dunlap if (itask->it_stmf_abort) { 867a6d42e7dSPeter Dunlap mutex_exit(&itask->it_mutex); 868*72cf3143Speter dunlap /* 869*72cf3143Speter dunlap * Task is no longer active 870*72cf3143Speter dunlap */ 871*72cf3143Speter dunlap iscsit_task_done(itask); 872*72cf3143Speter dunlap 873a6d42e7dSPeter Dunlap /* 874bf604c64SPeter Dunlap * STMF has already asked for this task to be aborted 875bf604c64SPeter Dunlap * 876a6d42e7dSPeter Dunlap * STMF specification is wrong... says to return 877a6d42e7dSPeter Dunlap * STMF_ABORTED, the code actually looks for 878a6d42e7dSPeter Dunlap * STMF_ABORT_SUCCESS. 879a6d42e7dSPeter Dunlap */ 880a6d42e7dSPeter Dunlap stmf_task_lport_aborted(itask->it_stmf_task, 881a6d42e7dSPeter Dunlap STMF_ABORT_SUCCESS, STMF_IOF_LPORT_DONE); 882a6d42e7dSPeter Dunlap return; 883a6d42e7dSPeter Dunlap } else { 884a6d42e7dSPeter Dunlap mutex_exit(&itask->it_mutex); 885a6d42e7dSPeter Dunlap /* 886bf604c64SPeter Dunlap * Tell STMF to stop processing the task. 887a6d42e7dSPeter Dunlap */ 888a6d42e7dSPeter Dunlap stmf_abort(STMF_QUEUE_TASK_ABORT, itask->it_stmf_task, 889a6d42e7dSPeter Dunlap STMF_ABORTED, NULL); 890a6d42e7dSPeter Dunlap return; 891a6d42e7dSPeter Dunlap } 892a6d42e7dSPeter Dunlap /*NOTREACHED*/ 893a6d42e7dSPeter Dunlap default: 894a6d42e7dSPeter Dunlap ASSERT(0); 895a6d42e7dSPeter Dunlap } 896a6d42e7dSPeter Dunlap } 897a6d42e7dSPeter Dunlap 898a6d42e7dSPeter Dunlap /*ARGSUSED*/ 899a6d42e7dSPeter Dunlap idm_status_t 900a6d42e7dSPeter Dunlap iscsit_client_notify(idm_conn_t *ic, idm_client_notify_t icn, 901a6d42e7dSPeter Dunlap uintptr_t data) 902a6d42e7dSPeter Dunlap { 903a6d42e7dSPeter Dunlap idm_status_t rc = IDM_STATUS_SUCCESS; 904a6d42e7dSPeter Dunlap 905a6d42e7dSPeter Dunlap /* 906a6d42e7dSPeter Dunlap * IDM client notifications will never occur at interrupt level 907a6d42e7dSPeter Dunlap * since they are generated from the connection state machine which 908a6d42e7dSPeter Dunlap * running on taskq threads. 909a6d42e7dSPeter Dunlap * 910a6d42e7dSPeter Dunlap */ 911a6d42e7dSPeter Dunlap switch (icn) { 912a6d42e7dSPeter Dunlap case CN_CONNECT_ACCEPT: 913a6d42e7dSPeter Dunlap rc = iscsit_conn_accept(ic); /* No data */ 914a6d42e7dSPeter Dunlap break; 915a6d42e7dSPeter Dunlap case CN_FFP_ENABLED: 916a6d42e7dSPeter Dunlap rc = iscsit_ffp_enabled(ic); /* No data */ 917a6d42e7dSPeter Dunlap break; 918a6d42e7dSPeter Dunlap case CN_FFP_DISABLED: 919a6d42e7dSPeter Dunlap /* 920a6d42e7dSPeter Dunlap * Data indicates whether this was the result of an 921a6d42e7dSPeter Dunlap * explicit logout request. 922a6d42e7dSPeter Dunlap */ 923a6d42e7dSPeter Dunlap rc = iscsit_ffp_disabled(ic, (idm_ffp_disable_t)data); 924a6d42e7dSPeter Dunlap break; 925a6d42e7dSPeter Dunlap case CN_CONNECT_LOST: 926a6d42e7dSPeter Dunlap rc = iscsit_conn_lost(ic); 927a6d42e7dSPeter Dunlap break; 928a6d42e7dSPeter Dunlap case CN_CONNECT_DESTROY: 929a6d42e7dSPeter Dunlap rc = iscsit_conn_destroy(ic); 930a6d42e7dSPeter Dunlap break; 931a6d42e7dSPeter Dunlap case CN_LOGIN_FAIL: 932a6d42e7dSPeter Dunlap /* 933a6d42e7dSPeter Dunlap * Force the login state machine to completion 934a6d42e7dSPeter Dunlap */ 935a6d42e7dSPeter Dunlap rc = iscsit_login_fail(ic); 936a6d42e7dSPeter Dunlap break; 937a6d42e7dSPeter Dunlap default: 938a6d42e7dSPeter Dunlap rc = IDM_STATUS_REJECT; 939a6d42e7dSPeter Dunlap break; 940a6d42e7dSPeter Dunlap } 941a6d42e7dSPeter Dunlap 942a6d42e7dSPeter Dunlap return (rc); 943a6d42e7dSPeter Dunlap } 944a6d42e7dSPeter Dunlap 945a6d42e7dSPeter Dunlap 946a6d42e7dSPeter Dunlap void 947a6d42e7dSPeter Dunlap iscsit_build_hdr(idm_task_t *idm_task, idm_pdu_t *pdu, uint8_t opcode) 948a6d42e7dSPeter Dunlap { 949a6d42e7dSPeter Dunlap iscsit_task_t *itask = idm_task->idt_private; 950a6d42e7dSPeter Dunlap iscsi_data_rsp_hdr_t *dh = (iscsi_data_rsp_hdr_t *)pdu->isp_hdr; 951a6d42e7dSPeter Dunlap 952a6d42e7dSPeter Dunlap /* 953a6d42e7dSPeter Dunlap * We acquired iscsit_sess_t.ist_sn_rwlock in iscsit_xfer_scsi_data 954a6d42e7dSPeter Dunlap * in reader mode so we expect to be locked here 955a6d42e7dSPeter Dunlap */ 956a6d42e7dSPeter Dunlap 957a6d42e7dSPeter Dunlap /* 958a6d42e7dSPeter Dunlap * Lun is only required if the opcode == ISCSI_OP_SCSI_DATA_RSP 959a6d42e7dSPeter Dunlap * and the 'A' bit is to be set 960a6d42e7dSPeter Dunlap */ 961a6d42e7dSPeter Dunlap dh->opcode = opcode; 962a6d42e7dSPeter Dunlap dh->itt = itask->it_itt; 963a6d42e7dSPeter Dunlap dh->ttt = itask->it_ttt; 9641050fd6dSJames Moore /* Maintain current statsn for RTT responses */ 9651050fd6dSJames Moore dh->statsn = (opcode == ISCSI_OP_RTT_RSP) ? 9661050fd6dSJames Moore htonl(itask->it_ict->ict_statsn) : 0; 967a6d42e7dSPeter Dunlap dh->expcmdsn = htonl(itask->it_ict->ict_sess->ist_expcmdsn); 968a6d42e7dSPeter Dunlap dh->maxcmdsn = htonl(itask->it_ict->ict_sess->ist_maxcmdsn); 969a6d42e7dSPeter Dunlap 970a6d42e7dSPeter Dunlap /* 971a6d42e7dSPeter Dunlap * IDM must set: 972a6d42e7dSPeter Dunlap * 973a6d42e7dSPeter Dunlap * data.flags and rtt.flags 974a6d42e7dSPeter Dunlap * data.dlength 975a6d42e7dSPeter Dunlap * data.datasn 976a6d42e7dSPeter Dunlap * data.offset 977a6d42e7dSPeter Dunlap * residual_count and cmd_status (if we ever implement phase collapse) 978a6d42e7dSPeter Dunlap * rtt.rttsn 979a6d42e7dSPeter Dunlap * rtt.data_offset 980a6d42e7dSPeter Dunlap * rtt.data_length 981a6d42e7dSPeter Dunlap */ 982a6d42e7dSPeter Dunlap } 983a6d42e7dSPeter Dunlap 984*72cf3143Speter dunlap void 985*72cf3143Speter dunlap iscsit_keepalive(idm_conn_t *ic) 986*72cf3143Speter dunlap { 987*72cf3143Speter dunlap idm_pdu_t *nop_in_pdu; 988*72cf3143Speter dunlap iscsi_nop_in_hdr_t *nop_in; 989*72cf3143Speter dunlap iscsit_conn_t *ict = ic->ic_handle; 990*72cf3143Speter dunlap 991*72cf3143Speter dunlap /* 992*72cf3143Speter dunlap * IDM noticed the connection has been idle for too long so it's 993*72cf3143Speter dunlap * time to provoke some activity. Build and transmit an iSCSI 994*72cf3143Speter dunlap * nop-in PDU -- when the initiator responds it will be counted 995*72cf3143Speter dunlap * as "activity" and keep the connection alive. 996*72cf3143Speter dunlap * 997*72cf3143Speter dunlap * We don't actually care about the response here at the iscsit level 998*72cf3143Speter dunlap * so we will just throw it away without looking at it when it arrives. 999*72cf3143Speter dunlap */ 1000*72cf3143Speter dunlap nop_in_pdu = idm_pdu_alloc(sizeof (*nop_in), 0); 1001*72cf3143Speter dunlap idm_pdu_init(nop_in_pdu, ic, NULL, NULL); 1002*72cf3143Speter dunlap 1003*72cf3143Speter dunlap nop_in = (iscsi_nop_in_hdr_t *)nop_in_pdu->isp_hdr; 1004*72cf3143Speter dunlap bzero(nop_in, sizeof (*nop_in)); 1005*72cf3143Speter dunlap nop_in->opcode = ISCSI_OP_NOOP_IN; 1006*72cf3143Speter dunlap nop_in->flags = ISCSI_FLAG_FINAL; 1007*72cf3143Speter dunlap nop_in->itt = ISCSI_RSVD_TASK_TAG; 1008*72cf3143Speter dunlap /* 1009*72cf3143Speter dunlap * This works because we don't currently allocate ttt's anywhere else 1010*72cf3143Speter dunlap * in iscsit so as long as we stay out of IDM's range we are safe. 1011*72cf3143Speter dunlap * If we need to allocate ttt's for other PDU's in the future this will 1012*72cf3143Speter dunlap * need to be improved. 1013*72cf3143Speter dunlap */ 1014*72cf3143Speter dunlap mutex_enter(&ict->ict_mutex); 1015*72cf3143Speter dunlap nop_in->ttt = ict->ict_keepalive_ttt; 1016*72cf3143Speter dunlap ict->ict_keepalive_ttt++; 1017*72cf3143Speter dunlap if (ict->ict_keepalive_ttt == ISCSI_RSVD_TASK_TAG) 1018*72cf3143Speter dunlap ict->ict_keepalive_ttt = IDM_TASKIDS_MAX; 1019*72cf3143Speter dunlap mutex_exit(&ict->ict_mutex); 1020*72cf3143Speter dunlap 1021*72cf3143Speter dunlap iscsit_pdu_tx(nop_in_pdu); 1022*72cf3143Speter dunlap } 1023*72cf3143Speter dunlap 1024a6d42e7dSPeter Dunlap static idm_status_t 1025a6d42e7dSPeter Dunlap iscsit_conn_accept(idm_conn_t *ic) 1026a6d42e7dSPeter Dunlap { 1027a6d42e7dSPeter Dunlap iscsit_conn_t *ict; 1028a6d42e7dSPeter Dunlap 102930e7468fSPeter Dunlap /* 103030e7468fSPeter Dunlap * We need to get a global hold here to ensure that the service 103130e7468fSPeter Dunlap * doesn't get shutdown prior to establishing a session. This 103230e7468fSPeter Dunlap * gets released in iscsit_conn_destroy(). 103330e7468fSPeter Dunlap */ 1034e42a0851Speter dunlap ISCSIT_GLOBAL_LOCK(RW_READER); 1035e42a0851Speter dunlap if (iscsit_global.global_svc_state != ISE_ENABLED) { 1036e42a0851Speter dunlap ISCSIT_GLOBAL_UNLOCK(); 1037e42a0851Speter dunlap return (IDM_STATUS_FAIL); 1038e42a0851Speter dunlap } 103930e7468fSPeter Dunlap iscsit_global_hold(); 1040e42a0851Speter dunlap ISCSIT_GLOBAL_UNLOCK(); 104130e7468fSPeter Dunlap 1042a6d42e7dSPeter Dunlap /* 1043a6d42e7dSPeter Dunlap * Allocate an associated iscsit structure to represent this 1044a6d42e7dSPeter Dunlap * connection. We shouldn't really create a session until we 1045a6d42e7dSPeter Dunlap * get the first login PDU. 1046a6d42e7dSPeter Dunlap */ 1047a6d42e7dSPeter Dunlap ict = kmem_zalloc(sizeof (*ict), KM_SLEEP); 1048a6d42e7dSPeter Dunlap 1049a6d42e7dSPeter Dunlap ict->ict_ic = ic; 1050a6d42e7dSPeter Dunlap ict->ict_statsn = 1; 1051*72cf3143Speter dunlap ict->ict_keepalive_ttt = IDM_TASKIDS_MAX; /* Avoid IDM TT range */ 1052a6d42e7dSPeter Dunlap ic->ic_handle = ict; 1053a6d42e7dSPeter Dunlap mutex_init(&ict->ict_mutex, NULL, MUTEX_DRIVER, NULL); 1054a6d42e7dSPeter Dunlap idm_refcnt_init(&ict->ict_refcnt, ict); 1055a6d42e7dSPeter Dunlap 1056a6d42e7dSPeter Dunlap /* 1057a6d42e7dSPeter Dunlap * Initialize login state machine 1058a6d42e7dSPeter Dunlap */ 1059a6d42e7dSPeter Dunlap if (iscsit_login_sm_init(ict) != IDM_STATUS_SUCCESS) { 1060e42a0851Speter dunlap iscsit_global_rele(); 1061a6d42e7dSPeter Dunlap return (IDM_STATUS_FAIL); 1062a6d42e7dSPeter Dunlap } 1063a6d42e7dSPeter Dunlap 1064a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1065a6d42e7dSPeter Dunlap } 1066a6d42e7dSPeter Dunlap 1067a6d42e7dSPeter Dunlap idm_status_t 1068a6d42e7dSPeter Dunlap iscsit_conn_reinstate(iscsit_conn_t *reinstate_ict, iscsit_conn_t *new_ict) 1069a6d42e7dSPeter Dunlap { 1070a6d42e7dSPeter Dunlap idm_status_t result; 1071a6d42e7dSPeter Dunlap 1072a6d42e7dSPeter Dunlap /* 1073a6d42e7dSPeter Dunlap * Note in new connection state that this connection is 1074a6d42e7dSPeter Dunlap * reinstating an existing connection. 1075a6d42e7dSPeter Dunlap */ 1076a6d42e7dSPeter Dunlap new_ict->ict_reinstating = B_TRUE; 1077a6d42e7dSPeter Dunlap new_ict->ict_reinstate_conn = reinstate_ict; 1078a6d42e7dSPeter Dunlap new_ict->ict_statsn = reinstate_ict->ict_statsn; 1079a6d42e7dSPeter Dunlap 1080a6d42e7dSPeter Dunlap /* 1081a6d42e7dSPeter Dunlap * Now generate connection state machine event to existing connection 1082a6d42e7dSPeter Dunlap * so that it starts the cleanup process. 1083a6d42e7dSPeter Dunlap */ 1084a6d42e7dSPeter Dunlap result = idm_conn_reinstate_event(reinstate_ict->ict_ic, 1085a6d42e7dSPeter Dunlap new_ict->ict_ic); 1086a6d42e7dSPeter Dunlap 1087a6d42e7dSPeter Dunlap return (result); 1088a6d42e7dSPeter Dunlap } 1089a6d42e7dSPeter Dunlap 1090a6d42e7dSPeter Dunlap void 1091a6d42e7dSPeter Dunlap iscsit_conn_hold(iscsit_conn_t *ict) 1092a6d42e7dSPeter Dunlap { 1093a6d42e7dSPeter Dunlap idm_refcnt_hold(&ict->ict_refcnt); 1094a6d42e7dSPeter Dunlap } 1095a6d42e7dSPeter Dunlap 1096a6d42e7dSPeter Dunlap void 1097a6d42e7dSPeter Dunlap iscsit_conn_rele(iscsit_conn_t *ict) 1098a6d42e7dSPeter Dunlap { 1099a6d42e7dSPeter Dunlap idm_refcnt_rele(&ict->ict_refcnt); 1100a6d42e7dSPeter Dunlap } 1101a6d42e7dSPeter Dunlap 1102a6d42e7dSPeter Dunlap void 1103a6d42e7dSPeter Dunlap iscsit_conn_dispatch_hold(iscsit_conn_t *ict) 1104a6d42e7dSPeter Dunlap { 1105a6d42e7dSPeter Dunlap idm_refcnt_hold(&ict->ict_dispatch_refcnt); 1106a6d42e7dSPeter Dunlap } 1107a6d42e7dSPeter Dunlap 1108a6d42e7dSPeter Dunlap void 1109a6d42e7dSPeter Dunlap iscsit_conn_dispatch_rele(iscsit_conn_t *ict) 1110a6d42e7dSPeter Dunlap { 1111a6d42e7dSPeter Dunlap idm_refcnt_rele(&ict->ict_dispatch_refcnt); 1112a6d42e7dSPeter Dunlap } 1113a6d42e7dSPeter Dunlap 1114a6d42e7dSPeter Dunlap static idm_status_t 1115a6d42e7dSPeter Dunlap iscsit_login_fail(idm_conn_t *ic) 1116a6d42e7dSPeter Dunlap { 1117a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 1118a6d42e7dSPeter Dunlap 1119a6d42e7dSPeter Dunlap /* Generate login state machine event */ 1120a6d42e7dSPeter Dunlap iscsit_login_sm_event(ict, ILE_LOGIN_CONN_ERROR, NULL); 1121a6d42e7dSPeter Dunlap 1122a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1123a6d42e7dSPeter Dunlap } 1124a6d42e7dSPeter Dunlap 1125a6d42e7dSPeter Dunlap static idm_status_t 1126a6d42e7dSPeter Dunlap iscsit_ffp_enabled(idm_conn_t *ic) 1127a6d42e7dSPeter Dunlap { 1128a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 1129a6d42e7dSPeter Dunlap 1130a6d42e7dSPeter Dunlap /* Generate session state machine event */ 1131a6d42e7dSPeter Dunlap iscsit_sess_sm_event(ict->ict_sess, SE_CONN_LOGGED_IN, ict); 1132a6d42e7dSPeter Dunlap 1133a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1134a6d42e7dSPeter Dunlap } 1135a6d42e7dSPeter Dunlap 1136a6d42e7dSPeter Dunlap static idm_status_t 1137a6d42e7dSPeter Dunlap iscsit_ffp_disabled(idm_conn_t *ic, idm_ffp_disable_t disable_class) 1138a6d42e7dSPeter Dunlap { 1139a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 1140a6d42e7dSPeter Dunlap 1141a6d42e7dSPeter Dunlap /* Generate session state machine event */ 1142a6d42e7dSPeter Dunlap switch (disable_class) { 1143a6d42e7dSPeter Dunlap case FD_CONN_FAIL: 1144a6d42e7dSPeter Dunlap iscsit_sess_sm_event(ict->ict_sess, SE_CONN_FFP_FAIL, ict); 1145a6d42e7dSPeter Dunlap break; 1146a6d42e7dSPeter Dunlap case FD_CONN_LOGOUT: 1147a6d42e7dSPeter Dunlap iscsit_sess_sm_event(ict->ict_sess, SE_CONN_FFP_DISABLE, ict); 1148a6d42e7dSPeter Dunlap break; 1149a6d42e7dSPeter Dunlap case FD_SESS_LOGOUT: 1150a6d42e7dSPeter Dunlap iscsit_sess_sm_event(ict->ict_sess, SE_SESSION_CLOSE, ict); 1151a6d42e7dSPeter Dunlap break; 1152a6d42e7dSPeter Dunlap default: 1153a6d42e7dSPeter Dunlap ASSERT(0); 1154a6d42e7dSPeter Dunlap } 1155a6d42e7dSPeter Dunlap 1156a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1157a6d42e7dSPeter Dunlap } 1158a6d42e7dSPeter Dunlap 1159a6d42e7dSPeter Dunlap static idm_status_t 1160a6d42e7dSPeter Dunlap iscsit_conn_lost(idm_conn_t *ic) 1161a6d42e7dSPeter Dunlap { 1162a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 1163a6d42e7dSPeter Dunlap 1164a6d42e7dSPeter Dunlap mutex_enter(&ict->ict_mutex); 1165a6d42e7dSPeter Dunlap ict->ict_lost = B_TRUE; 1166a6d42e7dSPeter Dunlap mutex_exit(&ict->ict_mutex); 1167a6d42e7dSPeter Dunlap 1168a6d42e7dSPeter Dunlap /* 1169a6d42e7dSPeter Dunlap * Make sure there aren't any PDU's transitioning from the receive 1170a6d42e7dSPeter Dunlap * handler to the dispatch taskq. 1171a6d42e7dSPeter Dunlap */ 1172a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(&ict->ict_dispatch_refcnt); 1173a6d42e7dSPeter Dunlap 1174a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1175a6d42e7dSPeter Dunlap } 1176a6d42e7dSPeter Dunlap 1177a6d42e7dSPeter Dunlap static idm_status_t 1178a6d42e7dSPeter Dunlap iscsit_conn_destroy(idm_conn_t *ic) 1179a6d42e7dSPeter Dunlap { 1180a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 1181a6d42e7dSPeter Dunlap 1182a6d42e7dSPeter Dunlap mutex_enter(&ict->ict_mutex); 1183a6d42e7dSPeter Dunlap ict->ict_destroyed = B_TRUE; 1184a6d42e7dSPeter Dunlap mutex_exit(&ict->ict_mutex); 1185a6d42e7dSPeter Dunlap 1186a6d42e7dSPeter Dunlap /* Generate session state machine event */ 1187a6d42e7dSPeter Dunlap if (ict->ict_sess != NULL) { 1188a6d42e7dSPeter Dunlap /* 1189a6d42e7dSPeter Dunlap * Session state machine will call iscsit_conn_destroy_done() 1190a6d42e7dSPeter Dunlap * when it has removed references to this connection. 1191a6d42e7dSPeter Dunlap */ 1192a6d42e7dSPeter Dunlap iscsit_sess_sm_event(ict->ict_sess, SE_CONN_FAIL, ict); 1193a6d42e7dSPeter Dunlap } 1194a6d42e7dSPeter Dunlap 1195a6d42e7dSPeter Dunlap ict->ict_ic = NULL; 1196a6d42e7dSPeter Dunlap 1197a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(&ict->ict_refcnt); 1198a6d42e7dSPeter Dunlap 1199a6d42e7dSPeter Dunlap mutex_destroy(&ict->ict_mutex); 1200a6d42e7dSPeter Dunlap idm_refcnt_destroy(&ict->ict_refcnt); 1201a6d42e7dSPeter Dunlap kmem_free(ict, sizeof (*ict)); 1202a6d42e7dSPeter Dunlap 120330e7468fSPeter Dunlap iscsit_global_rele(); 120430e7468fSPeter Dunlap 1205a6d42e7dSPeter Dunlap return (IDM_STATUS_SUCCESS); 1206a6d42e7dSPeter Dunlap } 1207a6d42e7dSPeter Dunlap 1208a6d42e7dSPeter Dunlap /* 1209a6d42e7dSPeter Dunlap * STMF-related functions 1210a6d42e7dSPeter Dunlap * 1211a6d42e7dSPeter Dunlap * iSCSI to STMF mapping 1212a6d42e7dSPeter Dunlap * 1213a6d42e7dSPeter Dunlap * Session == ? 1214a6d42e7dSPeter Dunlap * Connection == bound to local port but not itself a local port 1215a6d42e7dSPeter Dunlap * Target 1216a6d42e7dSPeter Dunlap * Target portal (group?) == local port (really but we're not going to do this) 1217a6d42e7dSPeter Dunlap * iscsit needs to map connections to local ports (whatever we decide 1218a6d42e7dSPeter Dunlap * they are) 1219a6d42e7dSPeter Dunlap * Target == ? 1220a6d42e7dSPeter Dunlap */ 1221a6d42e7dSPeter Dunlap 1222a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1223a6d42e7dSPeter Dunlap static stmf_data_buf_t * 1224a6d42e7dSPeter Dunlap iscsit_dbuf_alloc(scsi_task_t *task, uint32_t size, uint32_t *pminsize, 1225a6d42e7dSPeter Dunlap uint32_t flags) 1226a6d42e7dSPeter Dunlap { 1227a6d42e7dSPeter Dunlap iscsit_task_t *itask = task->task_port_private; 1228a6d42e7dSPeter Dunlap idm_buf_t *idm_buffer; 1229a6d42e7dSPeter Dunlap iscsit_buf_t *ibuf; 1230a6d42e7dSPeter Dunlap stmf_data_buf_t *result; 1231a6d42e7dSPeter Dunlap 1232a6d42e7dSPeter Dunlap /* 1233a6d42e7dSPeter Dunlap * Once the iSER picture is better understood it might make sense 1234a6d42e7dSPeter Dunlap * to pre-allocate some registered buffers, similar to what 1235a6d42e7dSPeter Dunlap * fct/qlt are doing. In the meantime hopefully stmf can allocate 1236a6d42e7dSPeter Dunlap * these things quickly. 1237a6d42e7dSPeter Dunlap * 1238a6d42e7dSPeter Dunlap * We can't support a transfer larger than MaxBurstLength bytes. 1239a6d42e7dSPeter Dunlap */ 1240a6d42e7dSPeter Dunlap if (size > itask->it_ict->ict_op.op_max_burst_length) { 1241a6d42e7dSPeter Dunlap *pminsize = itask->it_ict->ict_op.op_max_burst_length; 1242a6d42e7dSPeter Dunlap return (NULL); 1243a6d42e7dSPeter Dunlap } 1244a6d42e7dSPeter Dunlap 1245a6d42e7dSPeter Dunlap /* Alloc buffer */ 1246a6d42e7dSPeter Dunlap idm_buffer = idm_buf_alloc(itask->it_ict->ict_ic, NULL, size); 1247a6d42e7dSPeter Dunlap if (idm_buffer != NULL) { 1248a6d42e7dSPeter Dunlap result = stmf_alloc(STMF_STRUCT_DATA_BUF, 1249a6d42e7dSPeter Dunlap sizeof (iscsit_buf_t), 0); 1250a6d42e7dSPeter Dunlap if (result != NULL) { 1251a6d42e7dSPeter Dunlap /* Fill in stmf_data_buf_t */ 1252a6d42e7dSPeter Dunlap ibuf = result->db_port_private; 1253a6d42e7dSPeter Dunlap ibuf->ibuf_idm_buf = idm_buffer; 1254a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf = result; 1255a6d42e7dSPeter Dunlap ibuf->ibuf_is_immed = B_FALSE; 1256a6d42e7dSPeter Dunlap result->db_flags = DB_DONT_CACHE; 1257a6d42e7dSPeter Dunlap result->db_buf_size = size; 1258a6d42e7dSPeter Dunlap result->db_data_size = size; 1259a6d42e7dSPeter Dunlap result->db_sglist_length = 1; 1260a6d42e7dSPeter Dunlap result->db_sglist[0].seg_addr = idm_buffer->idb_buf; 1261a6d42e7dSPeter Dunlap result->db_sglist[0].seg_length = 1262a6d42e7dSPeter Dunlap idm_buffer->idb_buflen; 1263a6d42e7dSPeter Dunlap return (result); 1264a6d42e7dSPeter Dunlap } 1265a6d42e7dSPeter Dunlap 1266a6d42e7dSPeter Dunlap /* Couldn't get the stmf_data_buf_t so free the buffer */ 1267a6d42e7dSPeter Dunlap idm_buf_free(idm_buffer); 1268a6d42e7dSPeter Dunlap } 1269a6d42e7dSPeter Dunlap 1270a6d42e7dSPeter Dunlap return (NULL); 1271a6d42e7dSPeter Dunlap } 1272a6d42e7dSPeter Dunlap 1273a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1274a6d42e7dSPeter Dunlap static void 1275a6d42e7dSPeter Dunlap iscsit_dbuf_free(stmf_dbuf_store_t *ds, stmf_data_buf_t *dbuf) 1276a6d42e7dSPeter Dunlap { 1277a6d42e7dSPeter Dunlap iscsit_buf_t *ibuf = dbuf->db_port_private; 1278a6d42e7dSPeter Dunlap 1279a6d42e7dSPeter Dunlap if (ibuf->ibuf_is_immed) { 1280a6d42e7dSPeter Dunlap /* 1281a6d42e7dSPeter Dunlap * The iscsit_buf_t structure itself will be freed with its 1282a6d42e7dSPeter Dunlap * associated task. Here we just need to free the PDU that 1283a6d42e7dSPeter Dunlap * held the immediate data. 1284a6d42e7dSPeter Dunlap */ 1285a6d42e7dSPeter Dunlap idm_pdu_complete(ibuf->ibuf_immed_data_pdu, IDM_STATUS_SUCCESS); 1286a6d42e7dSPeter Dunlap ibuf->ibuf_immed_data_pdu = 0; 1287a6d42e7dSPeter Dunlap } else { 1288a6d42e7dSPeter Dunlap idm_buf_free(ibuf->ibuf_idm_buf); 1289a6d42e7dSPeter Dunlap stmf_free(dbuf); 1290a6d42e7dSPeter Dunlap } 1291a6d42e7dSPeter Dunlap } 1292a6d42e7dSPeter Dunlap 1293a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1294a6d42e7dSPeter Dunlap stmf_status_t 1295a6d42e7dSPeter Dunlap iscsit_xfer_scsi_data(scsi_task_t *task, stmf_data_buf_t *dbuf, 1296a6d42e7dSPeter Dunlap uint32_t ioflags) 1297a6d42e7dSPeter Dunlap { 1298a6d42e7dSPeter Dunlap iscsit_task_t *iscsit_task = task->task_port_private; 1299a6d42e7dSPeter Dunlap iscsit_buf_t *ibuf = dbuf->db_port_private; 1300a6d42e7dSPeter Dunlap int idm_rc; 1301a6d42e7dSPeter Dunlap 1302bf604c64SPeter Dunlap /* 1303bf604c64SPeter Dunlap * If we are aborting then we can ignore this request 1304bf604c64SPeter Dunlap */ 1305bf604c64SPeter Dunlap if (iscsit_task->it_stmf_abort) { 1306bf604c64SPeter Dunlap return (STMF_SUCCESS); 1307bf604c64SPeter Dunlap } 1308bf604c64SPeter Dunlap 1309a6d42e7dSPeter Dunlap /* 1310a6d42e7dSPeter Dunlap * If it's not immediate data then start the transfer 1311a6d42e7dSPeter Dunlap */ 1312a6d42e7dSPeter Dunlap ASSERT(ibuf->ibuf_is_immed == B_FALSE); 1313a6d42e7dSPeter Dunlap if (dbuf->db_flags & DB_DIRECTION_TO_RPORT) { 1314a6d42e7dSPeter Dunlap 1315a6d42e7dSPeter Dunlap /* 1316a6d42e7dSPeter Dunlap * IDM will call iscsit_build_hdr so lock now to serialize 1317a6d42e7dSPeter Dunlap * access to the SN values. We need to lock here to enforce 1318a6d42e7dSPeter Dunlap * lock ordering 1319a6d42e7dSPeter Dunlap */ 1320a6d42e7dSPeter Dunlap rw_enter(&iscsit_task->it_ict->ict_sess->ist_sn_rwlock, 1321a6d42e7dSPeter Dunlap RW_READER); 1322a6d42e7dSPeter Dunlap idm_rc = idm_buf_tx_to_ini(iscsit_task->it_idm_task, 1323a6d42e7dSPeter Dunlap ibuf->ibuf_idm_buf, dbuf->db_relative_offset, 1324a6d42e7dSPeter Dunlap dbuf->db_data_size, &iscsit_buf_xfer_cb, dbuf); 1325a6d42e7dSPeter Dunlap rw_exit(&iscsit_task->it_ict->ict_sess->ist_sn_rwlock); 1326a6d42e7dSPeter Dunlap 1327a6d42e7dSPeter Dunlap return (iscsit_idm_to_stmf(idm_rc)); 1328a6d42e7dSPeter Dunlap } else if (dbuf->db_flags & DB_DIRECTION_FROM_RPORT) { 1329a6d42e7dSPeter Dunlap /* Grab the SN lock (see comment above) */ 1330a6d42e7dSPeter Dunlap rw_enter(&iscsit_task->it_ict->ict_sess->ist_sn_rwlock, 1331a6d42e7dSPeter Dunlap RW_READER); 1332a6d42e7dSPeter Dunlap idm_rc = idm_buf_rx_from_ini(iscsit_task->it_idm_task, 1333a6d42e7dSPeter Dunlap ibuf->ibuf_idm_buf, dbuf->db_relative_offset, 1334a6d42e7dSPeter Dunlap dbuf->db_data_size, &iscsit_buf_xfer_cb, dbuf); 1335a6d42e7dSPeter Dunlap rw_exit(&iscsit_task->it_ict->ict_sess->ist_sn_rwlock); 1336a6d42e7dSPeter Dunlap 1337a6d42e7dSPeter Dunlap return (iscsit_idm_to_stmf(idm_rc)); 1338a6d42e7dSPeter Dunlap } 1339a6d42e7dSPeter Dunlap 1340a6d42e7dSPeter Dunlap /* What are we supposed to do if there is no direction? */ 1341a6d42e7dSPeter Dunlap return (STMF_INVALID_ARG); 1342a6d42e7dSPeter Dunlap } 1343a6d42e7dSPeter Dunlap 1344a6d42e7dSPeter Dunlap static void 1345a6d42e7dSPeter Dunlap iscsit_buf_xfer_cb(idm_buf_t *idb, idm_status_t status) 1346a6d42e7dSPeter Dunlap { 1347a6d42e7dSPeter Dunlap iscsit_task_t *itask = idb->idb_task_binding->idt_private; 1348a6d42e7dSPeter Dunlap stmf_data_buf_t *dbuf = idb->idb_cb_arg; 1349a6d42e7dSPeter Dunlap 1350a6d42e7dSPeter Dunlap dbuf->db_xfer_status = iscsit_idm_to_stmf(status); 1351a6d42e7dSPeter Dunlap 1352bf604c64SPeter Dunlap /* 1353bf604c64SPeter Dunlap * If the task has been aborted then we don't need to call STMF 1354bf604c64SPeter Dunlap */ 1355bf604c64SPeter Dunlap if (itask->it_stmf_abort) { 1356bf604c64SPeter Dunlap return; 1357bf604c64SPeter Dunlap } 1358bf604c64SPeter Dunlap 1359a6d42e7dSPeter Dunlap /* 1360a6d42e7dSPeter Dunlap * COMSTAR currently requires port providers to support 1361a6d42e7dSPeter Dunlap * the DB_SEND_STATUS_GOOD flag even if phase collapse is 1362a6d42e7dSPeter Dunlap * not supported. So we will roll our own... pretend we are 1363a6d42e7dSPeter Dunlap * COMSTAR and ask for a status PDU. 1364a6d42e7dSPeter Dunlap */ 1365a6d42e7dSPeter Dunlap if ((dbuf->db_flags & DB_SEND_STATUS_GOOD) && 1366a6d42e7dSPeter Dunlap status == IDM_STATUS_SUCCESS) { 1367a6d42e7dSPeter Dunlap /* 1368a6d42e7dSPeter Dunlap * If iscsit_send_scsi_status succeeds then the TX PDU 1369a6d42e7dSPeter Dunlap * callback will call stmf_send_status_done and set 1370a6d42e7dSPeter Dunlap * STMF_IOF_LPORT_DONE. Consequently we don't need 1371a6d42e7dSPeter Dunlap * to call stmf_data_xfer_done in that case. We 1372a6d42e7dSPeter Dunlap * still need to call it if we get a failure. 1373a6d42e7dSPeter Dunlap * 1374bf604c64SPeter Dunlap * To elaborate on this some more, upon successful 1375bf604c64SPeter Dunlap * return from iscsit_send_scsi_status it's possible 1376bf604c64SPeter Dunlap * that itask and idb have been freed and are no 1377bf604c64SPeter Dunlap * longer valid. 1378a6d42e7dSPeter Dunlap */ 1379a6d42e7dSPeter Dunlap if (iscsit_send_scsi_status(itask->it_stmf_task, 0) 138063528ae4SJames Moore != STMF_SUCCESS) { 1381a6d42e7dSPeter Dunlap /* Failed to send status */ 1382a6d42e7dSPeter Dunlap dbuf->db_xfer_status = STMF_FAILURE; 1383a6d42e7dSPeter Dunlap stmf_data_xfer_done(itask->it_stmf_task, dbuf, 1384a6d42e7dSPeter Dunlap STMF_IOF_LPORT_DONE); 1385a6d42e7dSPeter Dunlap } 1386a6d42e7dSPeter Dunlap } else { 1387a6d42e7dSPeter Dunlap stmf_data_xfer_done(itask->it_stmf_task, dbuf, 0); 1388a6d42e7dSPeter Dunlap } 1389a6d42e7dSPeter Dunlap } 1390a6d42e7dSPeter Dunlap 1391bf604c64SPeter Dunlap 1392a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1393a6d42e7dSPeter Dunlap stmf_status_t 1394a6d42e7dSPeter Dunlap iscsit_send_scsi_status(scsi_task_t *task, uint32_t ioflags) 1395a6d42e7dSPeter Dunlap { 1396a6d42e7dSPeter Dunlap iscsit_task_t *itask = task->task_port_private; 1397a6d42e7dSPeter Dunlap iscsi_scsi_rsp_hdr_t *rsp; 1398a6d42e7dSPeter Dunlap idm_pdu_t *pdu; 1399a6d42e7dSPeter Dunlap int resp_datalen; 1400a6d42e7dSPeter Dunlap 1401a6d42e7dSPeter Dunlap /* 1402a6d42e7dSPeter Dunlap * If this task is aborted then we don't need to respond. 1403a6d42e7dSPeter Dunlap */ 1404a6d42e7dSPeter Dunlap if (itask->it_stmf_abort) { 1405a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1406a6d42e7dSPeter Dunlap } 1407a6d42e7dSPeter Dunlap 1408a6d42e7dSPeter Dunlap /* 1409a6d42e7dSPeter Dunlap * If this is a task management status, handle it elsewhere. 1410a6d42e7dSPeter Dunlap */ 1411a6d42e7dSPeter Dunlap if (task->task_mgmt_function != TM_NONE) { 1412a6d42e7dSPeter Dunlap /* 1413a6d42e7dSPeter Dunlap * Don't wait for the PDU completion to tell STMF 1414a6d42e7dSPeter Dunlap * the task is done -- it doesn't really matter and 1415a6d42e7dSPeter Dunlap * it makes life complicated if STMF later asks us to 1416a6d42e7dSPeter Dunlap * abort the request and we don't know whether the 1417a6d42e7dSPeter Dunlap * status has been sent or not. 1418a6d42e7dSPeter Dunlap */ 1419a6d42e7dSPeter Dunlap itask->it_tm_responded = B_TRUE; 1420a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(itask->it_tm_pdu, 1421a6d42e7dSPeter Dunlap (task->task_completion_status == STMF_SUCCESS) ? 1422a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_COMPLETE : SCSI_TCP_TM_RESP_FUNC_NOT_SUPP); 1423a6d42e7dSPeter Dunlap stmf_send_status_done(task, STMF_SUCCESS, 1424a6d42e7dSPeter Dunlap STMF_IOF_LPORT_DONE); 1425a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1426a6d42e7dSPeter Dunlap } 1427a6d42e7dSPeter Dunlap 1428*72cf3143Speter dunlap /* 1429*72cf3143Speter dunlap * Remove the task from the session task list 1430*72cf3143Speter dunlap */ 1431*72cf3143Speter dunlap iscsit_task_done(itask); 1432*72cf3143Speter dunlap 1433*72cf3143Speter dunlap /* 1434*72cf3143Speter dunlap * Send status 1435*72cf3143Speter dunlap */ 1436a6d42e7dSPeter Dunlap mutex_enter(&itask->it_idm_task->idt_mutex); 1437a6d42e7dSPeter Dunlap if ((itask->it_idm_task->idt_state == TASK_ACTIVE) && 1438a6d42e7dSPeter Dunlap (task->task_completion_status == STMF_SUCCESS) && 1439a6d42e7dSPeter Dunlap (task->task_sense_length == 0) && 1440a6d42e7dSPeter Dunlap (task->task_resid == 0)) { 1441a6d42e7dSPeter Dunlap itask->it_idm_task->idt_state = TASK_COMPLETE; 1442a6d42e7dSPeter Dunlap /* PDU callback releases task hold */ 1443a6d42e7dSPeter Dunlap idm_task_hold(itask->it_idm_task); 1444a6d42e7dSPeter Dunlap mutex_exit(&itask->it_idm_task->idt_mutex); 1445a6d42e7dSPeter Dunlap /* 1446a6d42e7dSPeter Dunlap * Fast path. Cached status PDU's are already 1447a6d42e7dSPeter Dunlap * initialized. We just need to fill in 1448a6d42e7dSPeter Dunlap * connection and task information. 1449a6d42e7dSPeter Dunlap */ 1450a6d42e7dSPeter Dunlap pdu = kmem_cache_alloc(iscsit_status_pdu_cache, KM_SLEEP); 1451a6d42e7dSPeter Dunlap pdu->isp_ic = itask->it_ict->ict_ic; 1452a6d42e7dSPeter Dunlap pdu->isp_private = itask; 1453a6d42e7dSPeter Dunlap 1454a6d42e7dSPeter Dunlap rsp = (iscsi_scsi_rsp_hdr_t *)pdu->isp_hdr; 1455a6d42e7dSPeter Dunlap rsp->itt = itask->it_itt; 1456a6d42e7dSPeter Dunlap rsp->cmd_status = task->task_scsi_status; 1457a6d42e7dSPeter Dunlap iscsit_pdu_tx(pdu); 1458a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1459a6d42e7dSPeter Dunlap } else { 1460a6d42e7dSPeter Dunlap if (itask->it_idm_task->idt_state != TASK_ACTIVE) { 1461a6d42e7dSPeter Dunlap mutex_exit(&itask->it_idm_task->idt_mutex); 146263528ae4SJames Moore return (STMF_FAILURE); 1463a6d42e7dSPeter Dunlap } 1464a6d42e7dSPeter Dunlap itask->it_idm_task->idt_state = TASK_COMPLETE; 1465a6d42e7dSPeter Dunlap /* PDU callback releases task hold */ 1466a6d42e7dSPeter Dunlap idm_task_hold(itask->it_idm_task); 1467a6d42e7dSPeter Dunlap mutex_exit(&itask->it_idm_task->idt_mutex); 1468a6d42e7dSPeter Dunlap 1469a6d42e7dSPeter Dunlap resp_datalen = (task->task_sense_length == 0) ? 0 : 1470a6d42e7dSPeter Dunlap (task->task_sense_length + sizeof (uint16_t)); 1471a6d42e7dSPeter Dunlap 1472a6d42e7dSPeter Dunlap pdu = idm_pdu_alloc(sizeof (iscsi_hdr_t), resp_datalen); 1473a6d42e7dSPeter Dunlap idm_pdu_init(pdu, itask->it_ict->ict_ic, itask, 1474a6d42e7dSPeter Dunlap iscsit_send_status_done); 1475a6d42e7dSPeter Dunlap 1476a6d42e7dSPeter Dunlap rsp = (iscsi_scsi_rsp_hdr_t *)pdu->isp_hdr; 1477a6d42e7dSPeter Dunlap bzero(rsp, sizeof (*rsp)); 1478a6d42e7dSPeter Dunlap rsp->opcode = ISCSI_OP_SCSI_RSP; 1479a6d42e7dSPeter Dunlap 1480a6d42e7dSPeter Dunlap rsp->flags = ISCSI_FLAG_FINAL; 1481a6d42e7dSPeter Dunlap if (task->task_status_ctrl & TASK_SCTRL_OVER) { 1482a6d42e7dSPeter Dunlap rsp->flags |= ISCSI_FLAG_CMD_OVERFLOW; 1483a6d42e7dSPeter Dunlap } else if (task->task_status_ctrl & TASK_SCTRL_UNDER) { 1484a6d42e7dSPeter Dunlap rsp->flags |= ISCSI_FLAG_CMD_UNDERFLOW; 1485a6d42e7dSPeter Dunlap } 1486a6d42e7dSPeter Dunlap 1487a6d42e7dSPeter Dunlap rsp->bi_residual_count = 0; 1488a6d42e7dSPeter Dunlap rsp->residual_count = htonl(task->task_resid); 1489a6d42e7dSPeter Dunlap rsp->itt = itask->it_itt; 1490a6d42e7dSPeter Dunlap rsp->response = ISCSI_STATUS_CMD_COMPLETED; 1491a6d42e7dSPeter Dunlap rsp->cmd_status = task->task_scsi_status; 1492a6d42e7dSPeter Dunlap if (task->task_sense_length != 0) { 1493a6d42e7dSPeter Dunlap /* 1494a6d42e7dSPeter Dunlap * Add a byte to provide the sense length in 1495a6d42e7dSPeter Dunlap * the response 1496a6d42e7dSPeter Dunlap */ 1497a6d42e7dSPeter Dunlap *(uint16_t *)((void *)pdu->isp_data) = 1498a6d42e7dSPeter Dunlap htons(task->task_sense_length); 1499a6d42e7dSPeter Dunlap bcopy(task->task_sense_data, 1500a6d42e7dSPeter Dunlap (uint8_t *)pdu->isp_data + 1501a6d42e7dSPeter Dunlap sizeof (uint16_t), 1502a6d42e7dSPeter Dunlap task->task_sense_length); 1503a6d42e7dSPeter Dunlap hton24(rsp->dlength, resp_datalen); 1504a6d42e7dSPeter Dunlap } 1505a6d42e7dSPeter Dunlap 150630e7468fSPeter Dunlap DTRACE_PROBE5(iscsi__scsi__response, 150730e7468fSPeter Dunlap iscsit_conn_t *, itask->it_ict, 150830e7468fSPeter Dunlap uint8_t, rsp->response, 150930e7468fSPeter Dunlap uint8_t, rsp->cmd_status, 151030e7468fSPeter Dunlap idm_pdu_t *, pdu, 151130e7468fSPeter Dunlap scsi_task_t *, task); 151230e7468fSPeter Dunlap 1513a6d42e7dSPeter Dunlap iscsit_pdu_tx(pdu); 1514a6d42e7dSPeter Dunlap 1515a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1516a6d42e7dSPeter Dunlap } 1517a6d42e7dSPeter Dunlap } 1518a6d42e7dSPeter Dunlap 1519a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1520a6d42e7dSPeter Dunlap static void 1521a6d42e7dSPeter Dunlap iscsit_send_good_status_done(idm_pdu_t *pdu, idm_status_t status) 1522a6d42e7dSPeter Dunlap { 1523bf604c64SPeter Dunlap iscsit_task_t *itask; 1524bf604c64SPeter Dunlap boolean_t aborted; 1525a6d42e7dSPeter Dunlap 1526a6d42e7dSPeter Dunlap itask = pdu->isp_private; 1527bf604c64SPeter Dunlap aborted = itask->it_stmf_abort; 1528bf604c64SPeter Dunlap 1529bf604c64SPeter Dunlap /* 1530bf604c64SPeter Dunlap * After releasing the hold the task may be freed at any time so 1531bf604c64SPeter Dunlap * don't touch it. 1532bf604c64SPeter Dunlap */ 1533a6d42e7dSPeter Dunlap idm_task_rele(itask->it_idm_task); 1534bf604c64SPeter Dunlap if (!aborted) { 1535bf604c64SPeter Dunlap stmf_send_status_done(itask->it_stmf_task, 1536bf604c64SPeter Dunlap iscsit_idm_to_stmf(pdu->isp_status), STMF_IOF_LPORT_DONE); 1537bf604c64SPeter Dunlap } 1538a6d42e7dSPeter Dunlap kmem_cache_free(iscsit_status_pdu_cache, pdu); 1539a6d42e7dSPeter Dunlap } 1540a6d42e7dSPeter Dunlap 1541a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1542a6d42e7dSPeter Dunlap static void 1543a6d42e7dSPeter Dunlap iscsit_send_status_done(idm_pdu_t *pdu, idm_status_t status) 1544a6d42e7dSPeter Dunlap { 1545a6d42e7dSPeter Dunlap iscsit_task_t *itask; 1546bf604c64SPeter Dunlap boolean_t aborted; 1547a6d42e7dSPeter Dunlap 1548a6d42e7dSPeter Dunlap itask = pdu->isp_private; 1549bf604c64SPeter Dunlap aborted = itask->it_stmf_abort; 1550bf604c64SPeter Dunlap 1551bf604c64SPeter Dunlap /* 1552bf604c64SPeter Dunlap * After releasing the hold the task may be freed at any time so 1553bf604c64SPeter Dunlap * don't touch it. 1554bf604c64SPeter Dunlap */ 1555a6d42e7dSPeter Dunlap idm_task_rele(itask->it_idm_task); 1556bf604c64SPeter Dunlap if (!aborted) { 1557bf604c64SPeter Dunlap stmf_send_status_done(itask->it_stmf_task, 1558bf604c64SPeter Dunlap iscsit_idm_to_stmf(pdu->isp_status), STMF_IOF_LPORT_DONE); 1559bf604c64SPeter Dunlap } 1560a6d42e7dSPeter Dunlap idm_pdu_free(pdu); 1561a6d42e7dSPeter Dunlap } 1562a6d42e7dSPeter Dunlap 1563a6d42e7dSPeter Dunlap 1564a6d42e7dSPeter Dunlap void 1565a6d42e7dSPeter Dunlap iscsit_lport_task_free(scsi_task_t *task) 1566a6d42e7dSPeter Dunlap { 1567a6d42e7dSPeter Dunlap iscsit_task_t *itask = task->task_port_private; 1568a6d42e7dSPeter Dunlap 1569a6d42e7dSPeter Dunlap /* We only call idm_task_start for regular tasks, not task management */ 1570a6d42e7dSPeter Dunlap if (task->task_mgmt_function == TM_NONE) { 1571a6d42e7dSPeter Dunlap idm_task_done(itask->it_idm_task); 1572a6d42e7dSPeter Dunlap iscsit_task_free(itask); 1573a6d42e7dSPeter Dunlap return; 1574a6d42e7dSPeter Dunlap } else { 1575a6d42e7dSPeter Dunlap iscsit_tm_task_free(itask); 1576a6d42e7dSPeter Dunlap } 1577a6d42e7dSPeter Dunlap } 1578a6d42e7dSPeter Dunlap 1579a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1580a6d42e7dSPeter Dunlap stmf_status_t 1581a6d42e7dSPeter Dunlap iscsit_abort(stmf_local_port_t *lport, int abort_cmd, void *arg, uint32_t flags) 1582a6d42e7dSPeter Dunlap { 1583a6d42e7dSPeter Dunlap scsi_task_t *st = (scsi_task_t *)arg; 1584a6d42e7dSPeter Dunlap iscsit_task_t *iscsit_task; 1585a6d42e7dSPeter Dunlap idm_task_t *idt; 1586a6d42e7dSPeter Dunlap 1587a6d42e7dSPeter Dunlap /* 1588a6d42e7dSPeter Dunlap * If this is a task management request then there's really not much to 1589a6d42e7dSPeter Dunlap * do. 1590a6d42e7dSPeter Dunlap */ 1591a6d42e7dSPeter Dunlap if (st->task_mgmt_function != TM_NONE) { 1592a6d42e7dSPeter Dunlap return (STMF_ABORT_SUCCESS); 1593a6d42e7dSPeter Dunlap } 1594a6d42e7dSPeter Dunlap 1595a6d42e7dSPeter Dunlap /* 1596a6d42e7dSPeter Dunlap * Regular task, start cleaning up 1597a6d42e7dSPeter Dunlap */ 1598a6d42e7dSPeter Dunlap iscsit_task = st->task_port_private; 1599a6d42e7dSPeter Dunlap idt = iscsit_task->it_idm_task; 1600a6d42e7dSPeter Dunlap mutex_enter(&iscsit_task->it_mutex); 1601a6d42e7dSPeter Dunlap iscsit_task->it_stmf_abort = B_TRUE; 1602a6d42e7dSPeter Dunlap if (iscsit_task->it_aborted) { 1603a6d42e7dSPeter Dunlap mutex_exit(&iscsit_task->it_mutex); 1604*72cf3143Speter dunlap /* 1605*72cf3143Speter dunlap * Task is no longer active 1606*72cf3143Speter dunlap */ 1607*72cf3143Speter dunlap iscsit_task_done(iscsit_task); 1608*72cf3143Speter dunlap 1609a6d42e7dSPeter Dunlap /* 1610a6d42e7dSPeter Dunlap * STMF specification is wrong... says to return 1611a6d42e7dSPeter Dunlap * STMF_ABORTED, the code actually looks for 1612a6d42e7dSPeter Dunlap * STMF_ABORT_SUCCESS. 1613a6d42e7dSPeter Dunlap */ 1614a6d42e7dSPeter Dunlap return (STMF_ABORT_SUCCESS); 1615a6d42e7dSPeter Dunlap } else { 1616a6d42e7dSPeter Dunlap mutex_exit(&iscsit_task->it_mutex); 1617a6d42e7dSPeter Dunlap /* 1618a6d42e7dSPeter Dunlap * Call IDM to abort the task. Due to a variety of 1619a6d42e7dSPeter Dunlap * circumstances the task may already be in the process of 1620a6d42e7dSPeter Dunlap * aborting. 1621a6d42e7dSPeter Dunlap * We'll let IDM worry about rationalizing all that except 1622a6d42e7dSPeter Dunlap * for one particular instance. If the state of the task 1623a6d42e7dSPeter Dunlap * is TASK_COMPLETE, we need to indicate to the framework 1624a6d42e7dSPeter Dunlap * that we are in fact done. This typically happens with 1625a6d42e7dSPeter Dunlap * framework-initiated task management type requests 1626a6d42e7dSPeter Dunlap * (e.g. abort task). 1627a6d42e7dSPeter Dunlap */ 1628a6d42e7dSPeter Dunlap if (idt->idt_state == TASK_COMPLETE) { 1629a6d42e7dSPeter Dunlap idm_refcnt_wait_ref(&idt->idt_refcnt); 1630a6d42e7dSPeter Dunlap return (STMF_ABORT_SUCCESS); 1631a6d42e7dSPeter Dunlap } else { 1632a6d42e7dSPeter Dunlap idm_task_abort(idt->idt_ic, idt, AT_TASK_MGMT_ABORT); 1633a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1634a6d42e7dSPeter Dunlap } 1635a6d42e7dSPeter Dunlap } 1636a6d42e7dSPeter Dunlap 1637a6d42e7dSPeter Dunlap /*NOTREACHED*/ 1638a6d42e7dSPeter Dunlap } 1639a6d42e7dSPeter Dunlap 1640a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1641a6d42e7dSPeter Dunlap void 1642a6d42e7dSPeter Dunlap iscsit_ctl(stmf_local_port_t *lport, int cmd, void *arg) 1643a6d42e7dSPeter Dunlap { 1644a6d42e7dSPeter Dunlap iscsit_tgt_t *iscsit_tgt; 1645a6d42e7dSPeter Dunlap 1646a6d42e7dSPeter Dunlap ASSERT((cmd == STMF_CMD_LPORT_ONLINE) || 1647a6d42e7dSPeter Dunlap (cmd == STMF_ACK_LPORT_ONLINE_COMPLETE) || 1648a6d42e7dSPeter Dunlap (cmd == STMF_CMD_LPORT_OFFLINE) || 1649a6d42e7dSPeter Dunlap (cmd == STMF_ACK_LPORT_OFFLINE_COMPLETE)); 1650a6d42e7dSPeter Dunlap 1651a6d42e7dSPeter Dunlap iscsit_tgt = (iscsit_tgt_t *)lport->lport_port_private; 1652a6d42e7dSPeter Dunlap 1653a6d42e7dSPeter Dunlap switch (cmd) { 1654a6d42e7dSPeter Dunlap case STMF_CMD_LPORT_ONLINE: 1655a6d42e7dSPeter Dunlap iscsit_tgt_sm_event(iscsit_tgt, TE_STMF_ONLINE_REQ); 1656a6d42e7dSPeter Dunlap break; 1657a6d42e7dSPeter Dunlap case STMF_CMD_LPORT_OFFLINE: 1658a6d42e7dSPeter Dunlap iscsit_tgt_sm_event(iscsit_tgt, TE_STMF_OFFLINE_REQ); 1659a6d42e7dSPeter Dunlap break; 1660a6d42e7dSPeter Dunlap case STMF_ACK_LPORT_ONLINE_COMPLETE: 1661a6d42e7dSPeter Dunlap iscsit_tgt_sm_event(iscsit_tgt, TE_STMF_ONLINE_COMPLETE_ACK); 1662a6d42e7dSPeter Dunlap break; 1663a6d42e7dSPeter Dunlap case STMF_ACK_LPORT_OFFLINE_COMPLETE: 1664a6d42e7dSPeter Dunlap iscsit_tgt_sm_event(iscsit_tgt, TE_STMF_OFFLINE_COMPLETE_ACK); 1665a6d42e7dSPeter Dunlap break; 1666a6d42e7dSPeter Dunlap 1667a6d42e7dSPeter Dunlap default: 1668a6d42e7dSPeter Dunlap break; 1669a6d42e7dSPeter Dunlap } 1670a6d42e7dSPeter Dunlap } 1671a6d42e7dSPeter Dunlap 1672a6d42e7dSPeter Dunlap static stmf_status_t 1673a6d42e7dSPeter Dunlap iscsit_idm_to_stmf(idm_status_t idmrc) 1674a6d42e7dSPeter Dunlap { 1675a6d42e7dSPeter Dunlap switch (idmrc) { 1676a6d42e7dSPeter Dunlap case IDM_STATUS_SUCCESS: 1677a6d42e7dSPeter Dunlap return (STMF_SUCCESS); 1678a6d42e7dSPeter Dunlap default: 1679a6d42e7dSPeter Dunlap return (STMF_FAILURE); 1680a6d42e7dSPeter Dunlap } 1681a6d42e7dSPeter Dunlap /*NOTREACHED*/ 1682a6d42e7dSPeter Dunlap } 1683a6d42e7dSPeter Dunlap 1684a6d42e7dSPeter Dunlap 1685a6d42e7dSPeter Dunlap /* 1686a6d42e7dSPeter Dunlap * ISCSI protocol 1687a6d42e7dSPeter Dunlap */ 1688a6d42e7dSPeter Dunlap 1689a6d42e7dSPeter Dunlap void 1690a6d42e7dSPeter Dunlap iscsit_op_scsi_cmd(idm_conn_t *ic, idm_pdu_t *rx_pdu) 1691a6d42e7dSPeter Dunlap { 1692a6d42e7dSPeter Dunlap iscsit_conn_t *ict; 1693a6d42e7dSPeter Dunlap iscsit_task_t *itask; 1694a6d42e7dSPeter Dunlap scsi_task_t *task; 1695a6d42e7dSPeter Dunlap iscsit_buf_t *ibuf; 1696a6d42e7dSPeter Dunlap iscsi_scsi_cmd_hdr_t *iscsi_scsi = 1697a6d42e7dSPeter Dunlap (iscsi_scsi_cmd_hdr_t *)rx_pdu->isp_hdr; 1698a6d42e7dSPeter Dunlap iscsi_addl_hdr_t *ahs_hdr; 1699a6d42e7dSPeter Dunlap uint16_t addl_cdb_len = 0; 1700a6d42e7dSPeter Dunlap 1701a6d42e7dSPeter Dunlap ict = ic->ic_handle; 1702a6d42e7dSPeter Dunlap 1703a6d42e7dSPeter Dunlap itask = iscsit_task_alloc(ict); 1704a6d42e7dSPeter Dunlap if (itask == NULL) { 1705*72cf3143Speter dunlap /* Finish processing request */ 1706*72cf3143Speter dunlap iscsit_set_cmdsn(ict, rx_pdu); 1707*72cf3143Speter dunlap 1708a6d42e7dSPeter Dunlap iscsit_send_direct_scsi_resp(ict, rx_pdu, 1709a6d42e7dSPeter Dunlap ISCSI_STATUS_CMD_COMPLETED, STATUS_BUSY); 1710a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 1711a6d42e7dSPeter Dunlap return; 1712a6d42e7dSPeter Dunlap } 1713a6d42e7dSPeter Dunlap 1714a6d42e7dSPeter Dunlap 1715a6d42e7dSPeter Dunlap /* 1716a6d42e7dSPeter Dunlap * Note CmdSN and ITT in task. IDM will have already validated this 1717a6d42e7dSPeter Dunlap * request against the connection state so we don't need to check 1718a6d42e7dSPeter Dunlap * that (the connection may have changed state in the meantime but 1719a6d42e7dSPeter Dunlap * we will catch that when we try to send a response) 1720a6d42e7dSPeter Dunlap */ 1721a6d42e7dSPeter Dunlap itask->it_cmdsn = ntohl(iscsi_scsi->cmdsn); 1722a6d42e7dSPeter Dunlap itask->it_itt = iscsi_scsi->itt; 1723a6d42e7dSPeter Dunlap 1724a6d42e7dSPeter Dunlap /* 1725a6d42e7dSPeter Dunlap * Check for extended CDB AHS 1726a6d42e7dSPeter Dunlap */ 1727a6d42e7dSPeter Dunlap if (iscsi_scsi->hlength > 0) { 1728a6d42e7dSPeter Dunlap ahs_hdr = (iscsi_addl_hdr_t *)iscsi_scsi; 1729a6d42e7dSPeter Dunlap addl_cdb_len = ((ahs_hdr->ahs_hlen_hi << 8) | 1730a6d42e7dSPeter Dunlap ahs_hdr->ahs_hlen_lo) - 1; /* Adjust for reserved byte */ 1731a6d42e7dSPeter Dunlap if (((addl_cdb_len + 4) / sizeof (uint32_t)) > 1732a6d42e7dSPeter Dunlap iscsi_scsi->hlength) { 1733a6d42e7dSPeter Dunlap /* Mangled header info, drop it */ 1734a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 1735a6d42e7dSPeter Dunlap return; 1736a6d42e7dSPeter Dunlap } 1737a6d42e7dSPeter Dunlap } 1738a6d42e7dSPeter Dunlap 1739a6d42e7dSPeter Dunlap ict = rx_pdu->isp_ic->ic_handle; /* IDM client private */ 1740a6d42e7dSPeter Dunlap 1741*72cf3143Speter dunlap /* 1742*72cf3143Speter dunlap * Add task to session list. This function will also check to 1743*72cf3143Speter dunlap * ensure that the task does not already exist. 1744*72cf3143Speter dunlap */ 1745*72cf3143Speter dunlap if (iscsit_task_start(itask) != IDM_STATUS_SUCCESS) { 1746*72cf3143Speter dunlap /* 1747*72cf3143Speter dunlap * Task exists, free all resources and reject. Don't 1748*72cf3143Speter dunlap * update expcmdsn in this case because RFC 3720 says 1749*72cf3143Speter dunlap * "The CmdSN of the rejected command PDU (if it is a 1750*72cf3143Speter dunlap * non-immediate command) MUST NOT be considered received 1751*72cf3143Speter dunlap * by the target (i.e., a command sequence gap must be 1752*72cf3143Speter dunlap * assumed for the CmdSN), even though the CmdSN of the 1753*72cf3143Speter dunlap * rejected command PDU may be reliably ascertained. Upon 1754*72cf3143Speter dunlap * receiving the Reject, the initiator MUST plug the CmdSN 1755*72cf3143Speter dunlap * gap in order to continue to use the session. The gap 1756*72cf3143Speter dunlap * may be plugged either by transmitting a command PDU 1757*72cf3143Speter dunlap * with the same CmdSN, or by aborting the task (see section 1758*72cf3143Speter dunlap * 6.9 on how an abort may plug a CmdSN gap)." (Section 6.3) 1759*72cf3143Speter dunlap */ 1760*72cf3143Speter dunlap iscsit_task_free(itask); 1761*72cf3143Speter dunlap iscsit_send_reject(ict, rx_pdu, ISCSI_REJECT_TASK_IN_PROGRESS); 1762*72cf3143Speter dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 1763*72cf3143Speter dunlap return; 1764*72cf3143Speter dunlap } 1765*72cf3143Speter dunlap 1766*72cf3143Speter dunlap /* Update sequence numbers */ 1767*72cf3143Speter dunlap iscsit_set_cmdsn(ict, rx_pdu); 1768*72cf3143Speter dunlap 1769*72cf3143Speter dunlap /* 1770*72cf3143Speter dunlap * Allocate STMF task 1771*72cf3143Speter dunlap */ 1772a6d42e7dSPeter Dunlap itask->it_stmf_task = stmf_task_alloc( 1773a6d42e7dSPeter Dunlap itask->it_ict->ict_sess->ist_lport, 1774a6d42e7dSPeter Dunlap itask->it_ict->ict_sess->ist_stmf_sess, iscsi_scsi->lun, 1775a6d42e7dSPeter Dunlap 16 + addl_cdb_len, 0); 1776a6d42e7dSPeter Dunlap if (itask->it_stmf_task == NULL) { 1777a6d42e7dSPeter Dunlap /* 1778a6d42e7dSPeter Dunlap * Either stmf really couldn't get memory for a task or, 1779a6d42e7dSPeter Dunlap * more likely, the LU is currently in reset. Either way 1780a6d42e7dSPeter Dunlap * we have no choice but to fail the request. 1781a6d42e7dSPeter Dunlap */ 1782*72cf3143Speter dunlap iscsit_task_done(itask); 1783a6d42e7dSPeter Dunlap iscsit_task_free(itask); 1784a6d42e7dSPeter Dunlap iscsit_send_direct_scsi_resp(ict, rx_pdu, 1785a6d42e7dSPeter Dunlap ISCSI_STATUS_CMD_COMPLETED, STATUS_BUSY); 1786*72cf3143Speter dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 1787a6d42e7dSPeter Dunlap return; 1788a6d42e7dSPeter Dunlap } 1789a6d42e7dSPeter Dunlap 1790a6d42e7dSPeter Dunlap task = itask->it_stmf_task; 1791a6d42e7dSPeter Dunlap task->task_port_private = itask; 1792a6d42e7dSPeter Dunlap 1793a6d42e7dSPeter Dunlap bcopy(iscsi_scsi->lun, task->task_lun_no, sizeof (task->task_lun_no)); 1794a6d42e7dSPeter Dunlap 1795a6d42e7dSPeter Dunlap /* 1796a6d42e7dSPeter Dunlap * iSCSI and Comstar use the same values. Should we rely on this 1797a6d42e7dSPeter Dunlap * or translate them bit-wise? 1798a6d42e7dSPeter Dunlap */ 1799a6d42e7dSPeter Dunlap 1800a6d42e7dSPeter Dunlap task->task_flags = 1801a6d42e7dSPeter Dunlap (((iscsi_scsi->flags & ISCSI_FLAG_CMD_READ) ? TF_READ_DATA : 0) | 1802a6d42e7dSPeter Dunlap ((iscsi_scsi->flags & ISCSI_FLAG_CMD_WRITE) ? TF_WRITE_DATA : 0) | 1803a6d42e7dSPeter Dunlap ((rx_pdu->isp_datalen == 0) ? 0 : TF_INITIAL_BURST)); 1804a6d42e7dSPeter Dunlap 1805a6d42e7dSPeter Dunlap switch (iscsi_scsi->flags & ISCSI_FLAG_CMD_ATTR_MASK) { 1806a6d42e7dSPeter Dunlap case ISCSI_ATTR_UNTAGGED: 1807a6d42e7dSPeter Dunlap break; 1808a6d42e7dSPeter Dunlap case ISCSI_ATTR_SIMPLE: 1809a6d42e7dSPeter Dunlap task->task_additional_flags |= TF_ATTR_SIMPLE_QUEUE; 1810a6d42e7dSPeter Dunlap break; 1811a6d42e7dSPeter Dunlap case ISCSI_ATTR_ORDERED: 1812a6d42e7dSPeter Dunlap task->task_additional_flags |= TF_ATTR_ORDERED_QUEUE; 1813a6d42e7dSPeter Dunlap break; 1814a6d42e7dSPeter Dunlap case ISCSI_ATTR_HEAD_OF_QUEUE: 1815a6d42e7dSPeter Dunlap task->task_additional_flags |= TF_ATTR_HEAD_OF_QUEUE; 1816a6d42e7dSPeter Dunlap break; 1817a6d42e7dSPeter Dunlap case ISCSI_ATTR_ACA: 1818a6d42e7dSPeter Dunlap task->task_additional_flags |= TF_ATTR_ACA; 1819a6d42e7dSPeter Dunlap break; 1820a6d42e7dSPeter Dunlap default: 1821a6d42e7dSPeter Dunlap /* Protocol error but just take it, treat as untagged */ 1822a6d42e7dSPeter Dunlap break; 1823a6d42e7dSPeter Dunlap } 1824a6d42e7dSPeter Dunlap 1825a6d42e7dSPeter Dunlap 1826a6d42e7dSPeter Dunlap task->task_additional_flags = 0; 1827a6d42e7dSPeter Dunlap task->task_priority = 0; 1828a6d42e7dSPeter Dunlap task->task_mgmt_function = TM_NONE; 1829a6d42e7dSPeter Dunlap 1830a6d42e7dSPeter Dunlap /* 1831a6d42e7dSPeter Dunlap * This "task_max_nbufs" doesn't map well to BIDI. We probably need 1832a6d42e7dSPeter Dunlap * parameter for each direction. "MaxOutstandingR2T" may very well 1833a6d42e7dSPeter Dunlap * be set to one which could prevent us from doing simultaneous 1834a6d42e7dSPeter Dunlap * transfers in each direction. 1835a6d42e7dSPeter Dunlap */ 1836a6d42e7dSPeter Dunlap task->task_max_nbufs = (iscsi_scsi->flags & ISCSI_FLAG_CMD_WRITE) ? 1837a6d42e7dSPeter Dunlap ict->ict_op.op_max_outstanding_r2t : STMF_BUFS_MAX; 1838a6d42e7dSPeter Dunlap task->task_cmd_seq_no = ntohl(iscsi_scsi->itt); 1839a6d42e7dSPeter Dunlap task->task_expected_xfer_length = ntohl(iscsi_scsi->data_length); 1840a6d42e7dSPeter Dunlap 1841a6d42e7dSPeter Dunlap /* Copy CDB */ 1842a6d42e7dSPeter Dunlap bcopy(iscsi_scsi->scb, task->task_cdb, 16); 1843a6d42e7dSPeter Dunlap if (addl_cdb_len > 0) { 1844a6d42e7dSPeter Dunlap bcopy(ahs_hdr->ahs_extscb, task->task_cdb + 16, addl_cdb_len); 1845a6d42e7dSPeter Dunlap } 1846a6d42e7dSPeter Dunlap 1847a6d42e7dSPeter Dunlap /* 1848a6d42e7dSPeter Dunlap * Copy the transport header into the task handle from the PDU 1849a6d42e7dSPeter Dunlap * handle. The transport header describes this task's remote tagged 1850a6d42e7dSPeter Dunlap * buffer. 1851a6d42e7dSPeter Dunlap */ 1852a6d42e7dSPeter Dunlap if (rx_pdu->isp_transport_hdrlen != 0) { 1853a6d42e7dSPeter Dunlap bcopy(rx_pdu->isp_transport_hdr, 1854a6d42e7dSPeter Dunlap itask->it_idm_task->idt_transport_hdr, 1855a6d42e7dSPeter Dunlap rx_pdu->isp_transport_hdrlen); 1856a6d42e7dSPeter Dunlap } 1857a6d42e7dSPeter Dunlap 1858a6d42e7dSPeter Dunlap /* 1859a6d42e7dSPeter Dunlap * Tell IDM about our new active task 1860a6d42e7dSPeter Dunlap */ 1861a6d42e7dSPeter Dunlap idm_task_start(itask->it_idm_task, (uintptr_t)itask->it_itt); 1862a6d42e7dSPeter Dunlap 1863a6d42e7dSPeter Dunlap /* 1864a6d42e7dSPeter Dunlap * If we have any immediate data then setup the immediate buffer 1865a6d42e7dSPeter Dunlap * context that comes with the task 1866a6d42e7dSPeter Dunlap */ 1867a6d42e7dSPeter Dunlap if (rx_pdu->isp_datalen) { 1868a6d42e7dSPeter Dunlap ibuf = itask->it_immed_data; 1869a6d42e7dSPeter Dunlap ibuf->ibuf_immed_data_pdu = rx_pdu; 1870a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf->db_data_size = rx_pdu->isp_datalen; 1871a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf->db_buf_size = rx_pdu->isp_datalen; 1872a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf->db_relative_offset = 0; 1873a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf->db_sglist[0].seg_length = 1874a6d42e7dSPeter Dunlap rx_pdu->isp_datalen; 1875a6d42e7dSPeter Dunlap ibuf->ibuf_stmf_buf->db_sglist[0].seg_addr = rx_pdu->isp_data; 1876a6d42e7dSPeter Dunlap 1877a6d42e7dSPeter Dunlap stmf_post_task(task, ibuf->ibuf_stmf_buf); 1878a6d42e7dSPeter Dunlap } else { 1879a6d42e7dSPeter Dunlap stmf_post_task(task, NULL); 1880a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 1881a6d42e7dSPeter Dunlap } 1882a6d42e7dSPeter Dunlap } 1883a6d42e7dSPeter Dunlap 1884a6d42e7dSPeter Dunlap /*ARGSUSED*/ 1885a6d42e7dSPeter Dunlap void 1886a6d42e7dSPeter Dunlap iscsit_deferred_dispatch(idm_pdu_t *rx_pdu) 1887a6d42e7dSPeter Dunlap { 1888a6d42e7dSPeter Dunlap iscsit_conn_t *ict = rx_pdu->isp_ic->ic_handle; 1889a6d42e7dSPeter Dunlap 1890a6d42e7dSPeter Dunlap /* 1891a6d42e7dSPeter Dunlap * If the connection has been lost then ignore new PDU's 1892a6d42e7dSPeter Dunlap */ 1893a6d42e7dSPeter Dunlap mutex_enter(&ict->ict_mutex); 1894a6d42e7dSPeter Dunlap if (ict->ict_lost) { 1895a6d42e7dSPeter Dunlap mutex_exit(&ict->ict_mutex); 1896a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_FAIL); 1897a6d42e7dSPeter Dunlap return; 1898a6d42e7dSPeter Dunlap } 1899a6d42e7dSPeter Dunlap 1900a6d42e7dSPeter Dunlap /* 1901a6d42e7dSPeter Dunlap * Grab a hold on the connection to prevent it from going away 1902a6d42e7dSPeter Dunlap * between now and when the taskq function is called. 1903a6d42e7dSPeter Dunlap */ 1904a6d42e7dSPeter Dunlap iscsit_conn_dispatch_hold(ict); 1905a6d42e7dSPeter Dunlap mutex_exit(&ict->ict_mutex); 1906a6d42e7dSPeter Dunlap 1907a6d42e7dSPeter Dunlap if (taskq_dispatch(iscsit_global.global_dispatch_taskq, 1908a6d42e7dSPeter Dunlap iscsit_deferred, rx_pdu, DDI_NOSLEEP) == NULL) { 1909a6d42e7dSPeter Dunlap /* 1910a6d42e7dSPeter Dunlap * In the unlikely scenario that we couldn't get the resources 1911a6d42e7dSPeter Dunlap * to dispatch the PDU then just drop it. 1912a6d42e7dSPeter Dunlap */ 1913a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_FAIL); 1914a6d42e7dSPeter Dunlap idm_conn_event(ict->ict_ic, CE_TRANSPORT_FAIL, NULL); 1915a6d42e7dSPeter Dunlap iscsit_conn_dispatch_rele(ict); 1916a6d42e7dSPeter Dunlap } 1917a6d42e7dSPeter Dunlap } 1918a6d42e7dSPeter Dunlap 1919a6d42e7dSPeter Dunlap static void 1920a6d42e7dSPeter Dunlap iscsit_deferred(void *rx_pdu_void) 1921a6d42e7dSPeter Dunlap { 1922a6d42e7dSPeter Dunlap idm_pdu_t *rx_pdu = rx_pdu_void; 1923a6d42e7dSPeter Dunlap idm_conn_t *ic = rx_pdu->isp_ic; 1924a6d42e7dSPeter Dunlap iscsit_conn_t *ict = ic->ic_handle; 1925a6d42e7dSPeter Dunlap 1926a6d42e7dSPeter Dunlap switch (IDM_PDU_OPCODE(rx_pdu)) { 1927a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_OUT: 1928a6d42e7dSPeter Dunlap iscsit_set_cmdsn(ict, rx_pdu); 1929a6d42e7dSPeter Dunlap iscsit_pdu_op_noop(ict, rx_pdu); 1930a6d42e7dSPeter Dunlap break; 1931a6d42e7dSPeter Dunlap case ISCSI_OP_LOGIN_CMD: 1932a6d42e7dSPeter Dunlap iscsit_pdu_op_login_cmd(ict, rx_pdu); 1933a6d42e7dSPeter Dunlap break; 1934a6d42e7dSPeter Dunlap case ISCSI_OP_TEXT_CMD: 1935a6d42e7dSPeter Dunlap iscsit_set_cmdsn(ict, rx_pdu); 1936a6d42e7dSPeter Dunlap iscsit_pdu_op_text_cmd(ict, rx_pdu); 1937a6d42e7dSPeter Dunlap break; 1938a6d42e7dSPeter Dunlap case ISCSI_OP_LOGOUT_CMD: 1939a6d42e7dSPeter Dunlap iscsit_set_cmdsn(ict, rx_pdu); 1940a6d42e7dSPeter Dunlap iscsit_pdu_op_logout_cmd(ict, rx_pdu); 1941a6d42e7dSPeter Dunlap break; 1942a6d42e7dSPeter Dunlap default: 1943a6d42e7dSPeter Dunlap /* Protocol error. IDM should have caught this */ 1944a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_FAIL); 1945a6d42e7dSPeter Dunlap ASSERT(0); 1946a6d42e7dSPeter Dunlap break; 1947a6d42e7dSPeter Dunlap } 1948a6d42e7dSPeter Dunlap 1949a6d42e7dSPeter Dunlap iscsit_conn_dispatch_rele(ict); 1950a6d42e7dSPeter Dunlap } 1951a6d42e7dSPeter Dunlap 1952a6d42e7dSPeter Dunlap static void 1953a6d42e7dSPeter Dunlap iscsit_send_direct_scsi_resp(iscsit_conn_t *ict, idm_pdu_t *rx_pdu, 1954a6d42e7dSPeter Dunlap uint8_t response, uint8_t cmd_status) 1955a6d42e7dSPeter Dunlap { 1956a6d42e7dSPeter Dunlap idm_pdu_t *rsp_pdu; 1957a6d42e7dSPeter Dunlap idm_conn_t *ic; 1958a6d42e7dSPeter Dunlap iscsi_scsi_rsp_hdr_t *resp; 195930e7468fSPeter Dunlap iscsi_scsi_cmd_hdr_t *req = 196030e7468fSPeter Dunlap (iscsi_scsi_cmd_hdr_t *)rx_pdu->isp_hdr; 1961a6d42e7dSPeter Dunlap 1962a6d42e7dSPeter Dunlap ic = ict->ict_ic; 1963a6d42e7dSPeter Dunlap 1964a6d42e7dSPeter Dunlap rsp_pdu = idm_pdu_alloc(sizeof (iscsi_scsi_rsp_hdr_t), 0); 1965a6d42e7dSPeter Dunlap idm_pdu_init(rsp_pdu, ic, NULL, NULL); 1966a6d42e7dSPeter Dunlap resp = (iscsi_scsi_rsp_hdr_t *)rsp_pdu->isp_hdr; 1967a6d42e7dSPeter Dunlap 1968a6d42e7dSPeter Dunlap resp->opcode = ISCSI_OP_SCSI_RSP; 1969a6d42e7dSPeter Dunlap resp->flags = ISCSI_FLAG_FINAL; 1970a6d42e7dSPeter Dunlap resp->response = response; 1971a6d42e7dSPeter Dunlap resp->cmd_status = cmd_status; 197230e7468fSPeter Dunlap resp->itt = req->itt; 197330e7468fSPeter Dunlap if ((response == ISCSI_STATUS_CMD_COMPLETED) && 197430e7468fSPeter Dunlap (req->data_length != 0) && 197530e7468fSPeter Dunlap ((req->flags & ISCSI_FLAG_CMD_READ) || 197630e7468fSPeter Dunlap (req->flags & ISCSI_FLAG_CMD_WRITE))) { 197730e7468fSPeter Dunlap resp->flags |= ISCSI_FLAG_CMD_UNDERFLOW; 197830e7468fSPeter Dunlap resp->residual_count = req->data_length; 197930e7468fSPeter Dunlap } 198030e7468fSPeter Dunlap 198130e7468fSPeter Dunlap DTRACE_PROBE4(iscsi__scsi__direct__response, 198230e7468fSPeter Dunlap iscsit_conn_t *, ict, 198330e7468fSPeter Dunlap uint8_t, resp->response, 198430e7468fSPeter Dunlap uint8_t, resp->cmd_status, 198530e7468fSPeter Dunlap idm_pdu_t *, rsp_pdu); 1986a6d42e7dSPeter Dunlap 1987a6d42e7dSPeter Dunlap iscsit_pdu_tx(rsp_pdu); 1988a6d42e7dSPeter Dunlap } 1989a6d42e7dSPeter Dunlap 1990a6d42e7dSPeter Dunlap void 1991a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(idm_pdu_t *tm_resp_pdu, uint8_t tm_status) 1992a6d42e7dSPeter Dunlap { 1993a6d42e7dSPeter Dunlap iscsi_scsi_task_mgt_rsp_hdr_t *tm_resp; 1994a6d42e7dSPeter Dunlap 1995a6d42e7dSPeter Dunlap tm_resp = (iscsi_scsi_task_mgt_rsp_hdr_t *)tm_resp_pdu->isp_hdr; 1996a6d42e7dSPeter Dunlap tm_resp->response = tm_status; 199730e7468fSPeter Dunlap 199830e7468fSPeter Dunlap DTRACE_PROBE3(iscsi__scsi__tm__response, 199930e7468fSPeter Dunlap iscsit_conn_t *, tm_resp_pdu->isp_ic->ic_handle, 200030e7468fSPeter Dunlap uint8_t, tm_resp->response, 200130e7468fSPeter Dunlap idm_pdu_t *, tm_resp_pdu); 2002a6d42e7dSPeter Dunlap iscsit_pdu_tx(tm_resp_pdu); 2003a6d42e7dSPeter Dunlap } 2004a6d42e7dSPeter Dunlap 2005a6d42e7dSPeter Dunlap void 2006a6d42e7dSPeter Dunlap iscsit_op_scsi_task_mgmt(iscsit_conn_t *ict, idm_pdu_t *rx_pdu) 2007a6d42e7dSPeter Dunlap { 2008a6d42e7dSPeter Dunlap idm_pdu_t *tm_resp_pdu; 2009a6d42e7dSPeter Dunlap iscsit_task_t *itask; 2010a6d42e7dSPeter Dunlap iscsit_task_t *tm_itask; 2011a6d42e7dSPeter Dunlap scsi_task_t *task; 2012a6d42e7dSPeter Dunlap iscsi_scsi_task_mgt_hdr_t *iscsi_tm = 2013a6d42e7dSPeter Dunlap (iscsi_scsi_task_mgt_hdr_t *)rx_pdu->isp_hdr; 2014a6d42e7dSPeter Dunlap iscsi_scsi_task_mgt_rsp_hdr_t *iscsi_tm_rsp = 2015a6d42e7dSPeter Dunlap (iscsi_scsi_task_mgt_rsp_hdr_t *)rx_pdu->isp_hdr; 2016a6d42e7dSPeter Dunlap uint32_t rtt, cmdsn, refcmdsn; 2017a6d42e7dSPeter Dunlap uint8_t tm_func; 2018a6d42e7dSPeter Dunlap 2019a6d42e7dSPeter Dunlap /* 2020a6d42e7dSPeter Dunlap * Setup response PDU (response field will get filled in later) 2021a6d42e7dSPeter Dunlap */ 2022a6d42e7dSPeter Dunlap tm_resp_pdu = idm_pdu_alloc(sizeof (iscsi_scsi_task_mgt_rsp_hdr_t), 0); 2023a6d42e7dSPeter Dunlap if (tm_resp_pdu == NULL) { 2024a6d42e7dSPeter Dunlap /* Can't respond, just drop it */ 2025a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2026a6d42e7dSPeter Dunlap return; 2027a6d42e7dSPeter Dunlap } 2028a6d42e7dSPeter Dunlap idm_pdu_init(tm_resp_pdu, ict->ict_ic, NULL, NULL); 2029a6d42e7dSPeter Dunlap iscsi_tm_rsp = (iscsi_scsi_task_mgt_rsp_hdr_t *)tm_resp_pdu->isp_hdr; 2030a6d42e7dSPeter Dunlap bzero(iscsi_tm_rsp, sizeof (iscsi_scsi_task_mgt_rsp_hdr_t)); 2031a6d42e7dSPeter Dunlap iscsi_tm_rsp->opcode = ISCSI_OP_SCSI_TASK_MGT_RSP; 2032a6d42e7dSPeter Dunlap iscsi_tm_rsp->flags = ISCSI_FLAG_FINAL; 2033a6d42e7dSPeter Dunlap iscsi_tm_rsp->itt = rx_pdu->isp_hdr->itt; 2034a6d42e7dSPeter Dunlap 2035a6d42e7dSPeter Dunlap /* 2036a6d42e7dSPeter Dunlap * Figure out what we're being asked to do. 2037a6d42e7dSPeter Dunlap */ 203830e7468fSPeter Dunlap DTRACE_PROBE4(iscsi__scsi__tm__request, 203930e7468fSPeter Dunlap iscsit_conn_t *, ict, 204030e7468fSPeter Dunlap uint8_t, (iscsi_tm->function & ISCSI_FLAG_TASK_MGMT_FUNCTION_MASK), 204130e7468fSPeter Dunlap uint32_t, iscsi_tm->rtt, 204230e7468fSPeter Dunlap idm_pdu_t *, rx_pdu); 2043a6d42e7dSPeter Dunlap switch (iscsi_tm->function & ISCSI_FLAG_TASK_MGMT_FUNCTION_MASK) { 2044a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_ABORT_TASK: 2045a6d42e7dSPeter Dunlap /* 2046a6d42e7dSPeter Dunlap * STMF doesn't currently support the "abort task" task 2047a6d42e7dSPeter Dunlap * management command although it does support aborting 2048a6d42e7dSPeter Dunlap * an individual task. We'll get STMF to abort the task 2049a6d42e7dSPeter Dunlap * for us but handle the details of the task management 2050a6d42e7dSPeter Dunlap * command ourselves. 2051a6d42e7dSPeter Dunlap * 2052a6d42e7dSPeter Dunlap * Find the task associated with the referenced task tag. 2053a6d42e7dSPeter Dunlap */ 2054a6d42e7dSPeter Dunlap rtt = iscsi_tm->rtt; 2055a6d42e7dSPeter Dunlap itask = (iscsit_task_t *)idm_task_find_by_handle(ict->ict_ic, 2056a6d42e7dSPeter Dunlap (uintptr_t)rtt); 2057a6d42e7dSPeter Dunlap 2058a6d42e7dSPeter Dunlap if (itask == NULL) { 2059a6d42e7dSPeter Dunlap cmdsn = ntohl(iscsi_tm->cmdsn); 2060a6d42e7dSPeter Dunlap refcmdsn = ntohl(iscsi_tm->refcmdsn); 2061a6d42e7dSPeter Dunlap 2062a6d42e7dSPeter Dunlap /* 2063a6d42e7dSPeter Dunlap * Task was not found. If RefCmdSN is within the CmdSN 2064a6d42e7dSPeter Dunlap * window and less than CmdSN of the TM function, return 2065a6d42e7dSPeter Dunlap * "Function Complete". Otherwise, return 2066a6d42e7dSPeter Dunlap * "Task Does Not Exist". 2067a6d42e7dSPeter Dunlap */ 2068a6d42e7dSPeter Dunlap 2069a6d42e7dSPeter Dunlap if (iscsit_cmdsn_in_window(ict, refcmdsn) && 2070a6d42e7dSPeter Dunlap (refcmdsn < cmdsn)) { 2071a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2072a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_COMPLETE); 2073a6d42e7dSPeter Dunlap } else { 2074a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2075a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_NO_TASK); 2076a6d42e7dSPeter Dunlap } 2077a6d42e7dSPeter Dunlap } else { 2078a6d42e7dSPeter Dunlap 2079a6d42e7dSPeter Dunlap /* 2080a6d42e7dSPeter Dunlap * Tell STMF to abort the task. This will do no harm 2081a6d42e7dSPeter Dunlap * if the task is already complete. 2082a6d42e7dSPeter Dunlap */ 2083a6d42e7dSPeter Dunlap stmf_abort(STMF_QUEUE_TASK_ABORT, itask->it_stmf_task, 2084a6d42e7dSPeter Dunlap STMF_ABORTED, NULL); 2085a6d42e7dSPeter Dunlap 2086a6d42e7dSPeter Dunlap /* 2087a6d42e7dSPeter Dunlap * Make sure the task hasn't already completed 2088a6d42e7dSPeter Dunlap */ 2089a6d42e7dSPeter Dunlap mutex_enter(&itask->it_idm_task->idt_mutex); 2090a6d42e7dSPeter Dunlap if ((itask->it_idm_task->idt_state == TASK_COMPLETE) || 2091a6d42e7dSPeter Dunlap (itask->it_idm_task->idt_state == TASK_IDLE)) { 2092a6d42e7dSPeter Dunlap /* 2093a6d42e7dSPeter Dunlap * Task is complete, return "Task Does Not 2094a6d42e7dSPeter Dunlap * Exist" 2095a6d42e7dSPeter Dunlap */ 2096a6d42e7dSPeter Dunlap mutex_exit(&itask->it_idm_task->idt_mutex); 2097a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2098a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_NO_TASK); 2099a6d42e7dSPeter Dunlap } else { 2100a6d42e7dSPeter Dunlap /* 2101a6d42e7dSPeter Dunlap * STMF is now aborting the task, return 2102a6d42e7dSPeter Dunlap * "Function Complete" 2103a6d42e7dSPeter Dunlap */ 2104a6d42e7dSPeter Dunlap mutex_exit(&itask->it_idm_task->idt_mutex); 2105a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2106a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_COMPLETE); 2107a6d42e7dSPeter Dunlap } 2108a6d42e7dSPeter Dunlap idm_task_rele(itask->it_idm_task); 2109a6d42e7dSPeter Dunlap } 2110a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2111a6d42e7dSPeter Dunlap return; 2112a6d42e7dSPeter Dunlap 2113a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_ABORT_TASK_SET: 2114a6d42e7dSPeter Dunlap tm_func = TM_ABORT_TASK_SET; 2115a6d42e7dSPeter Dunlap break; 2116a6d42e7dSPeter Dunlap 2117a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_CLEAR_ACA: 2118a6d42e7dSPeter Dunlap tm_func = TM_CLEAR_ACA; 2119a6d42e7dSPeter Dunlap break; 2120a6d42e7dSPeter Dunlap 2121a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_CLEAR_TASK_SET: 2122a6d42e7dSPeter Dunlap tm_func = TM_CLEAR_TASK_SET; 2123a6d42e7dSPeter Dunlap break; 2124a6d42e7dSPeter Dunlap 2125a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_LOGICAL_UNIT_RESET: 2126a6d42e7dSPeter Dunlap tm_func = TM_LUN_RESET; 2127a6d42e7dSPeter Dunlap break; 2128a6d42e7dSPeter Dunlap 2129a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_TARGET_WARM_RESET: 2130a6d42e7dSPeter Dunlap tm_func = TM_TARGET_WARM_RESET; 2131a6d42e7dSPeter Dunlap break; 2132a6d42e7dSPeter Dunlap 2133a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_TARGET_COLD_RESET: 2134a6d42e7dSPeter Dunlap tm_func = TM_TARGET_COLD_RESET; 2135a6d42e7dSPeter Dunlap break; 2136a6d42e7dSPeter Dunlap 2137a6d42e7dSPeter Dunlap case ISCSI_TM_FUNC_TASK_REASSIGN: 2138a6d42e7dSPeter Dunlap /* 2139a6d42e7dSPeter Dunlap * We do not currently support allegiance reassignment. When 2140a6d42e7dSPeter Dunlap * we start supporting ERL1+, we will need to. 2141a6d42e7dSPeter Dunlap */ 2142a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2143a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_NO_ALLG_REASSN); 2144a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2145a6d42e7dSPeter Dunlap return; 2146a6d42e7dSPeter Dunlap 2147a6d42e7dSPeter Dunlap default: 2148a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2149a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_REJECTED); 2150a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2151a6d42e7dSPeter Dunlap return; 2152a6d42e7dSPeter Dunlap } 2153a6d42e7dSPeter Dunlap 2154a6d42e7dSPeter Dunlap tm_itask = iscsit_tm_task_alloc(ict); 2155a6d42e7dSPeter Dunlap if (tm_itask == NULL) { 2156a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2157a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_REJECTED); 2158a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2159a6d42e7dSPeter Dunlap return; 2160a6d42e7dSPeter Dunlap } 2161a6d42e7dSPeter Dunlap 2162a6d42e7dSPeter Dunlap 2163a6d42e7dSPeter Dunlap task = stmf_task_alloc(ict->ict_sess->ist_lport, 2164a6d42e7dSPeter Dunlap ict->ict_sess->ist_stmf_sess, iscsi_tm->lun, 2165a6d42e7dSPeter Dunlap 0, STMF_TASK_EXT_NONE); 2166a6d42e7dSPeter Dunlap if (task == NULL) { 2167a6d42e7dSPeter Dunlap /* 2168a6d42e7dSPeter Dunlap * If this happens, either the LU is in reset, couldn't 2169a6d42e7dSPeter Dunlap * get memory, or some other condition in which we simply 2170a6d42e7dSPeter Dunlap * can't complete this request. It would be nice to return 2171a6d42e7dSPeter Dunlap * an error code like "busy" but the closest we have is 2172a6d42e7dSPeter Dunlap * "rejected". 2173a6d42e7dSPeter Dunlap */ 2174a6d42e7dSPeter Dunlap iscsit_send_task_mgmt_resp(tm_resp_pdu, 2175a6d42e7dSPeter Dunlap SCSI_TCP_TM_RESP_REJECTED); 2176a6d42e7dSPeter Dunlap iscsit_tm_task_free(tm_itask); 2177a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2178a6d42e7dSPeter Dunlap return; 2179a6d42e7dSPeter Dunlap } 2180a6d42e7dSPeter Dunlap 2181a6d42e7dSPeter Dunlap tm_itask->it_tm_pdu = tm_resp_pdu; 2182a6d42e7dSPeter Dunlap tm_itask->it_stmf_task = task; 2183a6d42e7dSPeter Dunlap task->task_port_private = tm_itask; 2184a6d42e7dSPeter Dunlap task->task_mgmt_function = tm_func; 2185a6d42e7dSPeter Dunlap task->task_additional_flags = TASK_AF_NO_EXPECTED_XFER_LENGTH; 2186a6d42e7dSPeter Dunlap task->task_priority = 0; 2187a6d42e7dSPeter Dunlap task->task_max_nbufs = STMF_BUFS_MAX; 2188a6d42e7dSPeter Dunlap task->task_cmd_seq_no = iscsi_tm->itt; 2189a6d42e7dSPeter Dunlap task->task_expected_xfer_length = 0; 2190a6d42e7dSPeter Dunlap 2191a6d42e7dSPeter Dunlap stmf_post_task(task, NULL); 2192a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2193a6d42e7dSPeter Dunlap } 2194a6d42e7dSPeter Dunlap 2195a6d42e7dSPeter Dunlap static void 2196a6d42e7dSPeter Dunlap iscsit_pdu_op_noop(iscsit_conn_t *ict, idm_pdu_t *rx_pdu) 2197a6d42e7dSPeter Dunlap { 2198a6d42e7dSPeter Dunlap iscsi_nop_out_hdr_t *out = (iscsi_nop_out_hdr_t *)rx_pdu->isp_hdr; 2199a6d42e7dSPeter Dunlap iscsi_nop_in_hdr_t *in; 2200a6d42e7dSPeter Dunlap int resp_datalen; 2201a6d42e7dSPeter Dunlap idm_pdu_t *resp; 2202a6d42e7dSPeter Dunlap 2203a6d42e7dSPeter Dunlap /* Ignore the response from initiator */ 2204*72cf3143Speter dunlap if ((out->itt == ISCSI_RSVD_TASK_TAG) || 2205*72cf3143Speter dunlap (out->ttt != ISCSI_RSVD_TASK_TAG)) { 2206*72cf3143Speter dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2207a6d42e7dSPeter Dunlap return; 2208*72cf3143Speter dunlap } 2209a6d42e7dSPeter Dunlap 2210a6d42e7dSPeter Dunlap /* Allocate a PDU to respond */ 2211a6d42e7dSPeter Dunlap resp_datalen = ntoh24(out->dlength); 2212a6d42e7dSPeter Dunlap resp = idm_pdu_alloc(sizeof (iscsi_hdr_t), resp_datalen); 2213a6d42e7dSPeter Dunlap idm_pdu_init(resp, ict->ict_ic, NULL, NULL); 2214a6d42e7dSPeter Dunlap if (resp_datalen > 0) { 2215a6d42e7dSPeter Dunlap bcopy(rx_pdu->isp_data, resp->isp_data, resp_datalen); 2216a6d42e7dSPeter Dunlap } 2217a6d42e7dSPeter Dunlap 2218a6d42e7dSPeter Dunlap in = (iscsi_nop_in_hdr_t *)resp->isp_hdr; 2219a6d42e7dSPeter Dunlap bzero(in, sizeof (*in)); 2220a6d42e7dSPeter Dunlap in->opcode = ISCSI_OP_NOOP_IN; 2221a6d42e7dSPeter Dunlap in->flags = ISCSI_FLAG_FINAL; 2222a6d42e7dSPeter Dunlap bcopy(out->lun, in->lun, 8); 2223a6d42e7dSPeter Dunlap in->itt = out->itt; 2224a6d42e7dSPeter Dunlap in->ttt = ISCSI_RSVD_TASK_TAG; 2225a6d42e7dSPeter Dunlap hton24(in->dlength, resp_datalen); 2226a6d42e7dSPeter Dunlap 2227a6d42e7dSPeter Dunlap /* Any other field in resp to be set? */ 2228a6d42e7dSPeter Dunlap iscsit_pdu_tx(resp); 2229a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2230a6d42e7dSPeter Dunlap } 2231a6d42e7dSPeter Dunlap 2232a6d42e7dSPeter Dunlap static void 2233a6d42e7dSPeter Dunlap iscsit_pdu_op_login_cmd(iscsit_conn_t *ict, idm_pdu_t *rx_pdu) 2234a6d42e7dSPeter Dunlap { 2235a6d42e7dSPeter Dunlap 2236a6d42e7dSPeter Dunlap /* 2237a6d42e7dSPeter Dunlap * Submit PDU to login state machine. State machine will free the 2238a6d42e7dSPeter Dunlap * PDU. 2239a6d42e7dSPeter Dunlap */ 2240a6d42e7dSPeter Dunlap iscsit_login_sm_event(ict, ILE_LOGIN_RCV, rx_pdu); 2241a6d42e7dSPeter Dunlap } 2242a6d42e7dSPeter Dunlap 2243a6d42e7dSPeter Dunlap void 2244a6d42e7dSPeter Dunlap iscsit_pdu_op_logout_cmd(iscsit_conn_t *ict, idm_pdu_t *rx_pdu) 2245a6d42e7dSPeter Dunlap { 2246a6d42e7dSPeter Dunlap iscsi_logout_hdr_t *logout_req = 2247a6d42e7dSPeter Dunlap (iscsi_logout_hdr_t *)rx_pdu->isp_hdr; 2248a6d42e7dSPeter Dunlap iscsi_logout_rsp_hdr_t *logout_rsp; 2249a6d42e7dSPeter Dunlap idm_pdu_t *resp; 2250a6d42e7dSPeter Dunlap 2251a6d42e7dSPeter Dunlap /* Allocate a PDU to respond */ 2252a6d42e7dSPeter Dunlap resp = idm_pdu_alloc(sizeof (iscsi_hdr_t), 0); 2253a6d42e7dSPeter Dunlap idm_pdu_init(resp, ict->ict_ic, NULL, NULL); 2254a6d42e7dSPeter Dunlap 2255a6d42e7dSPeter Dunlap /* 2256a6d42e7dSPeter Dunlap * Logout results in the immediate termination of all tasks except 2257a6d42e7dSPeter Dunlap * if the logout reason is ISCSI_LOGOUT_REASON_RECOVERY. The 2258a6d42e7dSPeter Dunlap * connection state machine will drive this task cleanup automatically 2259a6d42e7dSPeter Dunlap * so we don't need to handle that here. 2260a6d42e7dSPeter Dunlap */ 2261a6d42e7dSPeter Dunlap logout_rsp = (iscsi_logout_rsp_hdr_t *)resp->isp_hdr; 2262a6d42e7dSPeter Dunlap bzero(logout_rsp, sizeof (*logout_rsp)); 2263a6d42e7dSPeter Dunlap logout_rsp->opcode = ISCSI_OP_LOGOUT_RSP; 2264a6d42e7dSPeter Dunlap logout_rsp->flags = ISCSI_FLAG_FINAL; 2265a6d42e7dSPeter Dunlap logout_rsp->itt = logout_req->itt; 2266a6d42e7dSPeter Dunlap if ((logout_req->flags & ISCSI_FLAG_LOGOUT_REASON_MASK) > 2267a6d42e7dSPeter Dunlap ISCSI_LOGOUT_REASON_RECOVERY) { 2268a6d42e7dSPeter Dunlap logout_rsp->response = ISCSI_LOGOUT_RECOVERY_UNSUPPORTED; 2269a6d42e7dSPeter Dunlap } else { 2270a6d42e7dSPeter Dunlap logout_rsp->response = ISCSI_LOGOUT_SUCCESS; 2271a6d42e7dSPeter Dunlap } 2272a6d42e7dSPeter Dunlap 2273a6d42e7dSPeter Dunlap iscsit_pdu_tx(resp); 2274a6d42e7dSPeter Dunlap idm_pdu_complete(rx_pdu, IDM_STATUS_SUCCESS); 2275a6d42e7dSPeter Dunlap } 2276a6d42e7dSPeter Dunlap 2277a6d42e7dSPeter Dunlap /* 2278a6d42e7dSPeter Dunlap * Calculate the number of outstanding commands we can process 2279a6d42e7dSPeter Dunlap */ 2280a6d42e7dSPeter Dunlap int 2281a6d42e7dSPeter Dunlap iscsit_cmd_window() 2282a6d42e7dSPeter Dunlap { 2283a6d42e7dSPeter Dunlap /* Will be better later */ 2284a6d42e7dSPeter Dunlap return (1024); 2285a6d42e7dSPeter Dunlap } 2286a6d42e7dSPeter Dunlap 2287a6d42e7dSPeter Dunlap /* 2288a6d42e7dSPeter Dunlap * Set local registers based on incoming PDU 2289a6d42e7dSPeter Dunlap */ 2290a6d42e7dSPeter Dunlap void 2291a6d42e7dSPeter Dunlap iscsit_set_cmdsn(iscsit_conn_t *ict, idm_pdu_t *rx_pdu) 2292a6d42e7dSPeter Dunlap { 2293a6d42e7dSPeter Dunlap iscsit_sess_t *ist; 2294a6d42e7dSPeter Dunlap iscsi_scsi_cmd_hdr_t *req; 2295a6d42e7dSPeter Dunlap 2296a6d42e7dSPeter Dunlap ist = ict->ict_sess; 2297a6d42e7dSPeter Dunlap 2298a6d42e7dSPeter Dunlap req = (iscsi_scsi_cmd_hdr_t *)rx_pdu->isp_hdr; 2299a6d42e7dSPeter Dunlap 2300a6d42e7dSPeter Dunlap rw_enter(&ist->ist_sn_rwlock, RW_WRITER); 2301a6d42e7dSPeter Dunlap ist->ist_expcmdsn = ntohl(req->cmdsn) + 1; 2302a6d42e7dSPeter Dunlap ist->ist_maxcmdsn = ntohl(req->cmdsn) + iscsit_cmd_window(); 2303a6d42e7dSPeter Dunlap rw_exit(&ist->ist_sn_rwlock); 2304a6d42e7dSPeter Dunlap } 2305a6d42e7dSPeter Dunlap 2306a6d42e7dSPeter Dunlap /* 2307a6d42e7dSPeter Dunlap * Update local StatSN and set SNs in response 2308a6d42e7dSPeter Dunlap */ 2309a6d42e7dSPeter Dunlap static void 2310a6d42e7dSPeter Dunlap iscsit_calc_rspsn(iscsit_conn_t *ict, idm_pdu_t *resp) 2311a6d42e7dSPeter Dunlap { 2312a6d42e7dSPeter Dunlap iscsit_sess_t *ist; 2313a6d42e7dSPeter Dunlap iscsi_scsi_rsp_hdr_t *rsp; 2314a6d42e7dSPeter Dunlap 2315a6d42e7dSPeter Dunlap /* Get iSCSI session handle */ 2316a6d42e7dSPeter Dunlap ist = ict->ict_sess; 2317a6d42e7dSPeter Dunlap 2318a6d42e7dSPeter Dunlap rsp = (iscsi_scsi_rsp_hdr_t *)resp->isp_hdr; 2319a6d42e7dSPeter Dunlap 2320a6d42e7dSPeter Dunlap /* Update StatSN */ 2321a6d42e7dSPeter Dunlap rsp->statsn = htonl(ict->ict_statsn); 2322a6d42e7dSPeter Dunlap switch (IDM_PDU_OPCODE(resp)) { 2323a6d42e7dSPeter Dunlap case ISCSI_OP_RTT_RSP: 2324a6d42e7dSPeter Dunlap /* Do nothing */ 2325a6d42e7dSPeter Dunlap break; 2326a6d42e7dSPeter Dunlap case ISCSI_OP_NOOP_IN: 2327a6d42e7dSPeter Dunlap /* 2328a6d42e7dSPeter Dunlap * Refer to section 10.19.1, RFC3720. 2329a6d42e7dSPeter Dunlap * Advance only if target is responding initiator 2330a6d42e7dSPeter Dunlap */ 2331a6d42e7dSPeter Dunlap if (((iscsi_nop_in_hdr_t *)rsp)->ttt == ISCSI_RSVD_TASK_TAG) 2332a6d42e7dSPeter Dunlap ict->ict_statsn++; 2333a6d42e7dSPeter Dunlap break; 2334a6d42e7dSPeter Dunlap case ISCSI_OP_SCSI_DATA_RSP: 2335a6d42e7dSPeter Dunlap if (rsp->flags & ISCSI_FLAG_DATA_STATUS) 2336a6d42e7dSPeter Dunlap ict->ict_statsn++; 2337a6d42e7dSPeter Dunlap else 2338a6d42e7dSPeter Dunlap rsp->statsn = 0; 2339a6d42e7dSPeter Dunlap break; 2340a6d42e7dSPeter Dunlap default: 2341a6d42e7dSPeter Dunlap ict->ict_statsn++; 2342a6d42e7dSPeter Dunlap break; 2343a6d42e7dSPeter Dunlap } 2344a6d42e7dSPeter Dunlap 2345a6d42e7dSPeter Dunlap /* Set ExpCmdSN and MaxCmdSN */ 2346a6d42e7dSPeter Dunlap rsp->maxcmdsn = htonl(ist->ist_maxcmdsn); 2347a6d42e7dSPeter Dunlap rsp->expcmdsn = htonl(ist->ist_expcmdsn); 2348a6d42e7dSPeter Dunlap } 2349a6d42e7dSPeter Dunlap 2350a6d42e7dSPeter Dunlap /* 2351a6d42e7dSPeter Dunlap * Wrapper funtion, calls iscsi_calc_rspsn and idm_pdu_tx 2352a6d42e7dSPeter Dunlap */ 2353a6d42e7dSPeter Dunlap void 2354a6d42e7dSPeter Dunlap iscsit_pdu_tx(idm_pdu_t *pdu) 2355a6d42e7dSPeter Dunlap { 2356a6d42e7dSPeter Dunlap iscsit_conn_t *ict = pdu->isp_ic->ic_handle; 2357a6d42e7dSPeter Dunlap 2358a6d42e7dSPeter Dunlap /* 2359a6d42e7dSPeter Dunlap * Protect ict->ict_statsn, ist->ist_maxcmdsn, and ist->ist_expcmdsn 2360a6d42e7dSPeter Dunlap * (which are used by iscsit_calc_rspsn) with the session mutex 2361a6d42e7dSPeter Dunlap * (ist->ist_sn_mutex). 2362a6d42e7dSPeter Dunlap */ 2363a6d42e7dSPeter Dunlap rw_enter(&ict->ict_sess->ist_sn_rwlock, RW_WRITER); 2364a6d42e7dSPeter Dunlap iscsit_calc_rspsn(ict, pdu); 2365a6d42e7dSPeter Dunlap idm_pdu_tx(pdu); 2366a6d42e7dSPeter Dunlap rw_exit(&ict->ict_sess->ist_sn_rwlock); 2367a6d42e7dSPeter Dunlap } 2368a6d42e7dSPeter Dunlap 2369a6d42e7dSPeter Dunlap /* 2370a6d42e7dSPeter Dunlap * Internal functions 2371a6d42e7dSPeter Dunlap */ 2372a6d42e7dSPeter Dunlap 2373a6d42e7dSPeter Dunlap void 2374a6d42e7dSPeter Dunlap iscsit_send_async_event(iscsit_conn_t *ict, uint8_t event) 2375a6d42e7dSPeter Dunlap { 2376a6d42e7dSPeter Dunlap idm_pdu_t *abt; 2377a6d42e7dSPeter Dunlap iscsi_async_evt_hdr_t *async_abt; 2378a6d42e7dSPeter Dunlap 2379a6d42e7dSPeter Dunlap /* 2380a6d42e7dSPeter Dunlap * Get a PDU to build the abort request. 2381a6d42e7dSPeter Dunlap */ 2382a6d42e7dSPeter Dunlap abt = idm_pdu_alloc(sizeof (iscsi_hdr_t), 0); 2383a6d42e7dSPeter Dunlap if (abt == NULL) { 2384a6d42e7dSPeter Dunlap idm_conn_event(ict->ict_ic, CE_TRANSPORT_FAIL, NULL); 2385a6d42e7dSPeter Dunlap return; 2386a6d42e7dSPeter Dunlap } 2387a6d42e7dSPeter Dunlap 2388*72cf3143Speter dunlap idm_pdu_init(abt, ict->ict_ic, NULL, NULL); 2389a6d42e7dSPeter Dunlap abt->isp_datalen = 0; 2390a6d42e7dSPeter Dunlap 2391a6d42e7dSPeter Dunlap async_abt = (iscsi_async_evt_hdr_t *)abt->isp_hdr; 2392a6d42e7dSPeter Dunlap bzero(async_abt, sizeof (*async_abt)); 2393a6d42e7dSPeter Dunlap async_abt->opcode = ISCSI_OP_ASYNC_EVENT; 2394a6d42e7dSPeter Dunlap async_abt->async_event = event; 2395a6d42e7dSPeter Dunlap async_abt->flags = ISCSI_FLAG_FINAL; 2396a6d42e7dSPeter Dunlap async_abt->rsvd4[0] = 0xff; 2397a6d42e7dSPeter Dunlap async_abt->rsvd4[1] = 0xff; 2398a6d42e7dSPeter Dunlap async_abt->rsvd4[2] = 0xff; 2399a6d42e7dSPeter Dunlap async_abt->rsvd4[3] = 0xff; 2400a6d42e7dSPeter Dunlap 2401a6d42e7dSPeter Dunlap switch (event) { 2402a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_REQUEST_LOGOUT: 2403a6d42e7dSPeter Dunlap async_abt->param3 = htons(IDM_LOGOUT_SECONDS); 2404a6d42e7dSPeter Dunlap break; 2405a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_SCSI_EVENT: 2406a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_DROPPING_CONNECTION: 2407a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_DROPPING_ALL_CONNECTIONS: 2408a6d42e7dSPeter Dunlap case ISCSI_ASYNC_EVENT_PARAM_NEGOTIATION: 2409a6d42e7dSPeter Dunlap default: 2410a6d42e7dSPeter Dunlap ASSERT(0); 2411a6d42e7dSPeter Dunlap } 2412a6d42e7dSPeter Dunlap 2413a6d42e7dSPeter Dunlap iscsit_pdu_tx(abt); 2414a6d42e7dSPeter Dunlap } 2415a6d42e7dSPeter Dunlap 2416*72cf3143Speter dunlap void 2417*72cf3143Speter dunlap iscsit_send_reject(iscsit_conn_t *ict, idm_pdu_t *rejected_pdu, uint8_t reason) 2418*72cf3143Speter dunlap { 2419*72cf3143Speter dunlap idm_pdu_t *reject_pdu; 2420*72cf3143Speter dunlap iscsi_reject_rsp_hdr_t *reject; 2421*72cf3143Speter dunlap 2422*72cf3143Speter dunlap /* 2423*72cf3143Speter dunlap * Get a PDU to build the abort request. 2424*72cf3143Speter dunlap */ 2425*72cf3143Speter dunlap reject_pdu = idm_pdu_alloc(sizeof (iscsi_hdr_t), 2426*72cf3143Speter dunlap rejected_pdu->isp_hdrlen); 2427*72cf3143Speter dunlap if (reject_pdu == NULL) { 2428*72cf3143Speter dunlap idm_conn_event(ict->ict_ic, CE_TRANSPORT_FAIL, NULL); 2429*72cf3143Speter dunlap return; 2430*72cf3143Speter dunlap } 2431*72cf3143Speter dunlap idm_pdu_init(reject_pdu, ict->ict_ic, NULL, NULL); 2432*72cf3143Speter dunlap 2433*72cf3143Speter dunlap reject_pdu->isp_datalen = rejected_pdu->isp_hdrlen; 2434*72cf3143Speter dunlap bcopy(rejected_pdu->isp_hdr, reject_pdu->isp_data, 2435*72cf3143Speter dunlap rejected_pdu->isp_hdrlen); 2436*72cf3143Speter dunlap 2437*72cf3143Speter dunlap reject = (iscsi_reject_rsp_hdr_t *)reject_pdu->isp_hdr; 2438*72cf3143Speter dunlap bzero(reject, sizeof (*reject)); 2439*72cf3143Speter dunlap reject->opcode = ISCSI_OP_REJECT_MSG; 2440*72cf3143Speter dunlap reject->reason = reason; 2441*72cf3143Speter dunlap reject->flags = ISCSI_FLAG_FINAL; 2442*72cf3143Speter dunlap hton24(reject->dlength, rejected_pdu->isp_hdrlen); 2443*72cf3143Speter dunlap reject->must_be_ff[0] = 0xff; 2444*72cf3143Speter dunlap reject->must_be_ff[1] = 0xff; 2445*72cf3143Speter dunlap reject->must_be_ff[2] = 0xff; 2446*72cf3143Speter dunlap reject->must_be_ff[3] = 0xff; 2447*72cf3143Speter dunlap 2448*72cf3143Speter dunlap iscsit_pdu_tx(reject_pdu); 2449*72cf3143Speter dunlap } 2450*72cf3143Speter dunlap 2451a6d42e7dSPeter Dunlap 2452a6d42e7dSPeter Dunlap static iscsit_task_t * 2453a6d42e7dSPeter Dunlap iscsit_task_alloc(iscsit_conn_t *ict) 2454a6d42e7dSPeter Dunlap { 2455a6d42e7dSPeter Dunlap iscsit_task_t *itask; 2456a6d42e7dSPeter Dunlap iscsit_buf_t *immed_ibuf; 2457a6d42e7dSPeter Dunlap 2458a6d42e7dSPeter Dunlap /* 2459a6d42e7dSPeter Dunlap * Possible items to pre-alloc if we cache iscsit_task_t's: 2460a6d42e7dSPeter Dunlap * 2461a6d42e7dSPeter Dunlap * Status PDU w/ sense buffer 2462a6d42e7dSPeter Dunlap * stmf_data_buf_t for immediate data 2463a6d42e7dSPeter Dunlap */ 2464a6d42e7dSPeter Dunlap itask = kmem_alloc(sizeof (iscsit_task_t) + sizeof (iscsit_buf_t) + 2465a6d42e7dSPeter Dunlap sizeof (stmf_data_buf_t), KM_NOSLEEP); 2466a6d42e7dSPeter Dunlap if (itask != NULL) { 2467a6d42e7dSPeter Dunlap mutex_init(&itask->it_mutex, NULL, MUTEX_DRIVER, NULL); 2468a6d42e7dSPeter Dunlap itask->it_aborted = itask->it_stmf_abort = 2469a6d42e7dSPeter Dunlap itask->it_tm_task = 0; 2470a6d42e7dSPeter Dunlap 2471a6d42e7dSPeter Dunlap immed_ibuf = (iscsit_buf_t *)(itask + 1); 2472a6d42e7dSPeter Dunlap bzero(immed_ibuf, sizeof (*immed_ibuf)); 2473a6d42e7dSPeter Dunlap immed_ibuf->ibuf_is_immed = B_TRUE; 2474a6d42e7dSPeter Dunlap immed_ibuf->ibuf_stmf_buf = (stmf_data_buf_t *)(immed_ibuf + 1); 2475a6d42e7dSPeter Dunlap 2476a6d42e7dSPeter Dunlap bzero(immed_ibuf->ibuf_stmf_buf, sizeof (stmf_data_buf_t)); 2477a6d42e7dSPeter Dunlap immed_ibuf->ibuf_stmf_buf->db_port_private = immed_ibuf; 2478a6d42e7dSPeter Dunlap immed_ibuf->ibuf_stmf_buf->db_sglist_length = 1; 2479a6d42e7dSPeter Dunlap immed_ibuf->ibuf_stmf_buf->db_flags = DB_DIRECTION_FROM_RPORT | 2480a6d42e7dSPeter Dunlap DB_DONT_CACHE; 2481a6d42e7dSPeter Dunlap itask->it_immed_data = immed_ibuf; 2482a6d42e7dSPeter Dunlap itask->it_idm_task = idm_task_alloc(ict->ict_ic); 2483a6d42e7dSPeter Dunlap if (itask->it_idm_task != NULL) { 2484a6d42e7dSPeter Dunlap itask->it_idm_task->idt_private = itask; 2485a6d42e7dSPeter Dunlap itask->it_ict = ict; 2486a6d42e7dSPeter Dunlap itask->it_ttt = itask->it_idm_task->idt_tt; 2487a6d42e7dSPeter Dunlap return (itask); 2488a6d42e7dSPeter Dunlap } else { 2489a6d42e7dSPeter Dunlap kmem_free(itask, sizeof (iscsit_task_t) + 2490a6d42e7dSPeter Dunlap sizeof (iscsit_buf_t) + sizeof (stmf_data_buf_t)); 2491a6d42e7dSPeter Dunlap } 2492a6d42e7dSPeter Dunlap } 2493a6d42e7dSPeter Dunlap 2494a6d42e7dSPeter Dunlap return (NULL); 2495a6d42e7dSPeter Dunlap } 2496a6d42e7dSPeter Dunlap 2497a6d42e7dSPeter Dunlap static void 2498a6d42e7dSPeter Dunlap iscsit_task_free(iscsit_task_t *itask) 2499a6d42e7dSPeter Dunlap { 2500a6d42e7dSPeter Dunlap idm_task_free(itask->it_idm_task); 2501a6d42e7dSPeter Dunlap mutex_destroy(&itask->it_mutex); 2502a6d42e7dSPeter Dunlap kmem_free(itask, sizeof (iscsit_task_t) + 2503a6d42e7dSPeter Dunlap sizeof (iscsit_buf_t) + sizeof (stmf_data_buf_t)); 2504a6d42e7dSPeter Dunlap } 2505a6d42e7dSPeter Dunlap 2506a6d42e7dSPeter Dunlap static iscsit_task_t * 2507a6d42e7dSPeter Dunlap iscsit_tm_task_alloc(iscsit_conn_t *ict) 2508a6d42e7dSPeter Dunlap { 2509a6d42e7dSPeter Dunlap iscsit_task_t *itask; 2510a6d42e7dSPeter Dunlap 2511a6d42e7dSPeter Dunlap itask = kmem_zalloc(sizeof (iscsit_task_t), KM_NOSLEEP); 2512a6d42e7dSPeter Dunlap if (itask != NULL) { 2513a6d42e7dSPeter Dunlap idm_conn_hold(ict->ict_ic); 2514a6d42e7dSPeter Dunlap mutex_init(&itask->it_mutex, NULL, MUTEX_DRIVER, NULL); 2515a6d42e7dSPeter Dunlap itask->it_aborted = itask->it_stmf_abort = 2516a6d42e7dSPeter Dunlap itask->it_tm_responded = 0; 2517a6d42e7dSPeter Dunlap itask->it_tm_pdu = NULL; 2518a6d42e7dSPeter Dunlap itask->it_tm_task = 1; 2519a6d42e7dSPeter Dunlap itask->it_ict = ict; 2520a6d42e7dSPeter Dunlap } 2521a6d42e7dSPeter Dunlap 2522a6d42e7dSPeter Dunlap return (itask); 2523a6d42e7dSPeter Dunlap } 2524a6d42e7dSPeter Dunlap 2525a6d42e7dSPeter Dunlap static void 2526a6d42e7dSPeter Dunlap iscsit_tm_task_free(iscsit_task_t *itask) 2527a6d42e7dSPeter Dunlap { 2528a6d42e7dSPeter Dunlap /* 2529a6d42e7dSPeter Dunlap * If we responded then the call to idm_pdu_complete will free the 2530a6d42e7dSPeter Dunlap * PDU. Otherwise we got aborted before the TM function could 2531a6d42e7dSPeter Dunlap * complete and we need to free the PDU explicitly. 2532a6d42e7dSPeter Dunlap */ 2533a6d42e7dSPeter Dunlap if (itask->it_tm_pdu != NULL && !itask->it_tm_responded) 2534a6d42e7dSPeter Dunlap idm_pdu_free(itask->it_tm_pdu); 2535a6d42e7dSPeter Dunlap idm_conn_rele(itask->it_ict->ict_ic); 2536a6d42e7dSPeter Dunlap mutex_destroy(&itask->it_mutex); 2537a6d42e7dSPeter Dunlap kmem_free(itask, sizeof (iscsit_task_t)); 2538a6d42e7dSPeter Dunlap } 2539a6d42e7dSPeter Dunlap 2540*72cf3143Speter dunlap static idm_status_t 2541*72cf3143Speter dunlap iscsit_task_start(iscsit_task_t *itask) 2542*72cf3143Speter dunlap { 2543*72cf3143Speter dunlap iscsit_sess_t *ist = itask->it_ict->ict_sess; 2544*72cf3143Speter dunlap avl_index_t where; 2545*72cf3143Speter dunlap 2546*72cf3143Speter dunlap /* 2547*72cf3143Speter dunlap * Sanity check the ITT and ensure that this task does not already 2548*72cf3143Speter dunlap * exist. If not then add the task to the session task list. 2549*72cf3143Speter dunlap */ 2550*72cf3143Speter dunlap mutex_enter(&ist->ist_mutex); 2551*72cf3143Speter dunlap mutex_enter(&itask->it_mutex); 2552*72cf3143Speter dunlap itask->it_active = 1; 2553*72cf3143Speter dunlap if (avl_find(&ist->ist_task_list, itask, &where) == NULL) { 2554*72cf3143Speter dunlap /* New task, add to AVL */ 2555*72cf3143Speter dunlap avl_insert(&ist->ist_task_list, itask, where); 2556*72cf3143Speter dunlap mutex_exit(&itask->it_mutex); 2557*72cf3143Speter dunlap mutex_exit(&ist->ist_mutex); 2558*72cf3143Speter dunlap return (IDM_STATUS_SUCCESS); 2559*72cf3143Speter dunlap } 2560*72cf3143Speter dunlap mutex_exit(&itask->it_mutex); 2561*72cf3143Speter dunlap mutex_exit(&ist->ist_mutex); 2562*72cf3143Speter dunlap 2563*72cf3143Speter dunlap return (IDM_STATUS_REJECT); 2564*72cf3143Speter dunlap } 2565*72cf3143Speter dunlap 2566*72cf3143Speter dunlap static void 2567*72cf3143Speter dunlap iscsit_task_done(iscsit_task_t *itask) 2568*72cf3143Speter dunlap { 2569*72cf3143Speter dunlap iscsit_sess_t *ist = itask->it_ict->ict_sess; 2570*72cf3143Speter dunlap 2571*72cf3143Speter dunlap mutex_enter(&ist->ist_mutex); 2572*72cf3143Speter dunlap mutex_enter(&itask->it_mutex); 2573*72cf3143Speter dunlap if (itask->it_active) { 2574*72cf3143Speter dunlap avl_remove(&ist->ist_task_list, itask); 2575*72cf3143Speter dunlap itask->it_active = 0; 2576*72cf3143Speter dunlap } 2577*72cf3143Speter dunlap mutex_exit(&itask->it_mutex); 2578*72cf3143Speter dunlap mutex_exit(&ist->ist_mutex); 2579*72cf3143Speter dunlap } 2580*72cf3143Speter dunlap 2581a6d42e7dSPeter Dunlap /* 2582a6d42e7dSPeter Dunlap * iscsit status PDU cache 2583a6d42e7dSPeter Dunlap */ 2584a6d42e7dSPeter Dunlap 2585a6d42e7dSPeter Dunlap /*ARGSUSED*/ 2586a6d42e7dSPeter Dunlap static int 2587a6d42e7dSPeter Dunlap iscsit_status_pdu_constructor(void *pdu_void, void *arg, int flags) 2588a6d42e7dSPeter Dunlap { 2589a6d42e7dSPeter Dunlap idm_pdu_t *pdu = pdu_void; 2590a6d42e7dSPeter Dunlap iscsi_scsi_rsp_hdr_t *rsp; 2591a6d42e7dSPeter Dunlap 2592a6d42e7dSPeter Dunlap bzero(pdu, sizeof (idm_pdu_t)); 2593a6d42e7dSPeter Dunlap pdu->isp_callback = iscsit_send_good_status_done; 2594a6d42e7dSPeter Dunlap pdu->isp_magic = IDM_PDU_MAGIC; 2595a6d42e7dSPeter Dunlap pdu->isp_hdr = (iscsi_hdr_t *)(pdu + 1); /* Ptr arithmetic */ 2596a6d42e7dSPeter Dunlap pdu->isp_hdrlen = sizeof (iscsi_hdr_t); 2597a6d42e7dSPeter Dunlap 2598a6d42e7dSPeter Dunlap /* Setup status response */ 2599a6d42e7dSPeter Dunlap rsp = (iscsi_scsi_rsp_hdr_t *)pdu->isp_hdr; 2600a6d42e7dSPeter Dunlap bzero(rsp, sizeof (*rsp)); 2601a6d42e7dSPeter Dunlap rsp->opcode = ISCSI_OP_SCSI_RSP; 2602a6d42e7dSPeter Dunlap rsp->flags = ISCSI_FLAG_FINAL; 2603a6d42e7dSPeter Dunlap rsp->response = ISCSI_STATUS_CMD_COMPLETED; 2604a6d42e7dSPeter Dunlap 2605a6d42e7dSPeter Dunlap return (0); 2606a6d42e7dSPeter Dunlap } 2607a6d42e7dSPeter Dunlap 2608a6d42e7dSPeter Dunlap /* 2609a6d42e7dSPeter Dunlap * iscsit private data handler 2610a6d42e7dSPeter Dunlap */ 2611a6d42e7dSPeter Dunlap 2612a6d42e7dSPeter Dunlap /*ARGSUSED*/ 2613a6d42e7dSPeter Dunlap static void 2614a6d42e7dSPeter Dunlap iscsit_pp_cb(struct stmf_port_provider *pp, int cmd, void *arg, uint32_t flags) 2615a6d42e7dSPeter Dunlap { 2616a6d42e7dSPeter Dunlap it_config_t *cfg; 2617a6d42e7dSPeter Dunlap nvlist_t *nvl; 2618a6d42e7dSPeter Dunlap 2619a6d42e7dSPeter Dunlap if ((cmd != STMF_PROVIDER_DATA_UPDATED) || (arg == NULL)) { 2620a6d42e7dSPeter Dunlap return; 2621a6d42e7dSPeter Dunlap } 2622a6d42e7dSPeter Dunlap 2623a6d42e7dSPeter Dunlap nvl = (nvlist_t *)arg; 2624a6d42e7dSPeter Dunlap 2625a6d42e7dSPeter Dunlap /* Translate nvlist */ 2626a6d42e7dSPeter Dunlap if (it_nv_to_config(nvl, &cfg) != 0) { 2627a6d42e7dSPeter Dunlap cmn_err(CE_WARN, "Configuration is invalid"); 2628a6d42e7dSPeter Dunlap return; 2629a6d42e7dSPeter Dunlap } 2630a6d42e7dSPeter Dunlap 2631a6d42e7dSPeter Dunlap /* Update config */ 2632a6d42e7dSPeter Dunlap (void) iscsit_config_merge(cfg); 2633a6d42e7dSPeter Dunlap 2634a6d42e7dSPeter Dunlap it_config_free_cmn(cfg); 2635a6d42e7dSPeter Dunlap } 2636a6d42e7dSPeter Dunlap 2637a6d42e7dSPeter Dunlap 2638a6d42e7dSPeter Dunlap static it_cfg_status_t 2639a6d42e7dSPeter Dunlap iscsit_config_merge(it_config_t *in_cfg) 2640a6d42e7dSPeter Dunlap { 2641a6d42e7dSPeter Dunlap it_cfg_status_t status; 2642a6d42e7dSPeter Dunlap it_config_t *cfg; 2643a6d42e7dSPeter Dunlap it_config_t tmp_cfg; 2644a6d42e7dSPeter Dunlap list_t tpg_del_list; 2645a6d42e7dSPeter Dunlap 2646a6d42e7dSPeter Dunlap if (in_cfg) { 2647a6d42e7dSPeter Dunlap cfg = in_cfg; 2648a6d42e7dSPeter Dunlap } else { 2649a6d42e7dSPeter Dunlap /* Make empty config */ 2650a6d42e7dSPeter Dunlap bzero(&tmp_cfg, sizeof (tmp_cfg)); 2651a6d42e7dSPeter Dunlap cfg = &tmp_cfg; 2652a6d42e7dSPeter Dunlap } 2653a6d42e7dSPeter Dunlap 2654a6d42e7dSPeter Dunlap list_create(&tpg_del_list, sizeof (iscsit_tpg_t), 2655a6d42e7dSPeter Dunlap offsetof(iscsit_tpg_t, tpg_delete_ln)); 2656a6d42e7dSPeter Dunlap 2657a6d42e7dSPeter Dunlap /* 2658a6d42e7dSPeter Dunlap * Update targets, initiator contexts, target portal groups, 2659a6d42e7dSPeter Dunlap * and iSNS client 2660a6d42e7dSPeter Dunlap */ 2661a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_LOCK(RW_WRITER); 2662a6d42e7dSPeter Dunlap if (((status = iscsit_config_merge_tpg(cfg, &tpg_del_list)) 2663a6d42e7dSPeter Dunlap != 0) || 2664a6d42e7dSPeter Dunlap ((status = iscsit_config_merge_tgt(cfg)) != 0) || 2665a6d42e7dSPeter Dunlap ((status = iscsit_config_merge_ini(cfg)) != 0) || 2666a6d42e7dSPeter Dunlap ((status = isnst_config_merge(cfg)) != 0)) { 2667a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 2668a6d42e7dSPeter Dunlap return (status); 2669a6d42e7dSPeter Dunlap } 2670a6d42e7dSPeter Dunlap 2671a6d42e7dSPeter Dunlap /* Update other global config parameters */ 2672a6d42e7dSPeter Dunlap if (iscsit_global.global_props) { 2673a6d42e7dSPeter Dunlap nvlist_free(iscsit_global.global_props); 2674a6d42e7dSPeter Dunlap iscsit_global.global_props = NULL; 2675a6d42e7dSPeter Dunlap } 2676a6d42e7dSPeter Dunlap if (in_cfg) { 2677a6d42e7dSPeter Dunlap (void) nvlist_dup(cfg->config_global_properties, 2678a6d42e7dSPeter Dunlap &iscsit_global.global_props, KM_SLEEP); 2679a6d42e7dSPeter Dunlap } 2680a6d42e7dSPeter Dunlap ISCSIT_GLOBAL_UNLOCK(); 2681a6d42e7dSPeter Dunlap 2682a6d42e7dSPeter Dunlap iscsit_config_destroy_tpgs(&tpg_del_list); 2683a6d42e7dSPeter Dunlap 2684a6d42e7dSPeter Dunlap list_destroy(&tpg_del_list); 2685a6d42e7dSPeter Dunlap 2686a6d42e7dSPeter Dunlap return (ITCFG_SUCCESS); 2687a6d42e7dSPeter Dunlap } 2688a6d42e7dSPeter Dunlap 2689a6d42e7dSPeter Dunlap /* 2690a6d42e7dSPeter Dunlap * iscsit_sna_lt[e] 2691a6d42e7dSPeter Dunlap * 2692a6d42e7dSPeter Dunlap * Compare serial numbers using serial number arithmetic as defined in 2693a6d42e7dSPeter Dunlap * RFC 1982. 2694a6d42e7dSPeter Dunlap * 2695a6d42e7dSPeter Dunlap * NOTE: This code is duplicated in the isns server as well as iscsitgtd. It 2696a6d42e7dSPeter Dunlap * ought to be common. 2697a6d42e7dSPeter Dunlap */ 2698a6d42e7dSPeter Dunlap 2699a6d42e7dSPeter Dunlap static int 2700a6d42e7dSPeter Dunlap iscsit_sna_lt(uint32_t sn1, uint32_t sn2) 2701a6d42e7dSPeter Dunlap { 2702a6d42e7dSPeter Dunlap return ((sn1 != sn2) && 2703a6d42e7dSPeter Dunlap (((sn1 < sn2) && ((sn2 - sn1) < ISCSIT_SNA32_CHECK)) || 2704a6d42e7dSPeter Dunlap ((sn1 > sn2) && ((sn1 - sn2) > ISCSIT_SNA32_CHECK)))); 2705a6d42e7dSPeter Dunlap } 2706a6d42e7dSPeter Dunlap 2707a6d42e7dSPeter Dunlap static int 2708a6d42e7dSPeter Dunlap iscsit_sna_lte(uint32_t sn1, uint32_t sn2) 2709a6d42e7dSPeter Dunlap { 2710a6d42e7dSPeter Dunlap return ((sn1 == sn2) || 2711a6d42e7dSPeter Dunlap (((sn1 < sn2) && ((sn2 - sn1) < ISCSIT_SNA32_CHECK)) || 2712a6d42e7dSPeter Dunlap ((sn1 > sn2) && ((sn1 - sn2) > ISCSIT_SNA32_CHECK)))); 2713a6d42e7dSPeter Dunlap } 2714a6d42e7dSPeter Dunlap 2715a6d42e7dSPeter Dunlap 2716a6d42e7dSPeter Dunlap static boolean_t 2717a6d42e7dSPeter Dunlap iscsit_cmdsn_in_window(iscsit_conn_t *ict, uint32_t cmdsn) 2718a6d42e7dSPeter Dunlap { 2719a6d42e7dSPeter Dunlap iscsit_sess_t *ist = ict->ict_sess; 2720a6d42e7dSPeter Dunlap int rval = B_TRUE; 2721a6d42e7dSPeter Dunlap 2722a6d42e7dSPeter Dunlap ist = ict->ict_sess; 2723a6d42e7dSPeter Dunlap 2724a6d42e7dSPeter Dunlap rw_enter(&ist->ist_sn_rwlock, RW_READER); 2725a6d42e7dSPeter Dunlap 2726a6d42e7dSPeter Dunlap /* 2727a6d42e7dSPeter Dunlap * If cmdsn is less than ist_expcmdsn - iscsit_cmd_window() or 2728a6d42e7dSPeter Dunlap * greater than ist_expcmdsn, it's not in the window. 2729a6d42e7dSPeter Dunlap */ 2730a6d42e7dSPeter Dunlap 2731a6d42e7dSPeter Dunlap if (iscsit_sna_lt(cmdsn, (ist->ist_expcmdsn - iscsit_cmd_window())) || 2732a6d42e7dSPeter Dunlap !iscsit_sna_lte(cmdsn, ist->ist_expcmdsn)) { 2733a6d42e7dSPeter Dunlap rval = B_FALSE; 2734a6d42e7dSPeter Dunlap } 2735a6d42e7dSPeter Dunlap 2736a6d42e7dSPeter Dunlap rw_exit(&ist->ist_sn_rwlock); 2737a6d42e7dSPeter Dunlap 2738a6d42e7dSPeter Dunlap return (rval); 2739a6d42e7dSPeter Dunlap } 2740