ctl_frontend_iscsi.c revision 256197
1255570Strasz/*- 2255570Strasz * Copyright (c) 2012 The FreeBSD Foundation 3255570Strasz * All rights reserved. 4255570Strasz * 5255570Strasz * This software was developed by Edward Tomasz Napierala under sponsorship 6255570Strasz * from the FreeBSD Foundation. 7255570Strasz * 8255570Strasz * Redistribution and use in source and binary forms, with or without 9255570Strasz * modification, are permitted provided that the following conditions 10255570Strasz * are met: 11255570Strasz * 1. Redistributions of source code must retain the above copyright 12255570Strasz * notice, this list of conditions and the following disclaimer. 13255570Strasz * 2. Redistributions in binary form must reproduce the above copyright 14255570Strasz * notice, this list of conditions and the following disclaimer in the 15255570Strasz * documentation and/or other materials provided with the distribution. 16255570Strasz * 17255570Strasz * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18255570Strasz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19255570Strasz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20255570Strasz * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21255570Strasz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22255570Strasz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23255570Strasz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24255570Strasz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25255570Strasz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26255570Strasz * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27255570Strasz * SUCH DAMAGE. 28255570Strasz * 29255570Strasz * $FreeBSD: head/sys/cam/ctl/ctl_frontend_iscsi.c 256197 2013-10-09 17:06:03Z trasz $ 30255570Strasz */ 31255570Strasz 32255570Strasz/* 33255570Strasz * CTL frontend for the iSCSI protocol. 34255570Strasz */ 35255570Strasz 36255570Strasz#include <sys/cdefs.h> 37255570Strasz__FBSDID("$FreeBSD: head/sys/cam/ctl/ctl_frontend_iscsi.c 256197 2013-10-09 17:06:03Z trasz $"); 38255570Strasz 39255570Strasz#include <sys/param.h> 40255570Strasz#include <sys/capability.h> 41255570Strasz#include <sys/condvar.h> 42255570Strasz#include <sys/file.h> 43255570Strasz#include <sys/kernel.h> 44255570Strasz#include <sys/kthread.h> 45255570Strasz#include <sys/lock.h> 46255570Strasz#include <sys/malloc.h> 47255570Strasz#include <sys/module.h> 48255570Strasz#include <sys/mutex.h> 49255570Strasz#include <sys/queue.h> 50255570Strasz#include <sys/sbuf.h> 51255570Strasz#include <sys/sysctl.h> 52255570Strasz#include <sys/systm.h> 53255570Strasz#include <sys/uio.h> 54255570Strasz#include <sys/unistd.h> 55255570Strasz#include <vm/uma.h> 56255570Strasz 57255570Strasz#include <cam/scsi/scsi_all.h> 58255570Strasz#include <cam/scsi/scsi_da.h> 59255570Strasz#include <cam/ctl/ctl_io.h> 60255570Strasz#include <cam/ctl/ctl.h> 61255570Strasz#include <cam/ctl/ctl_backend.h> 62256163Strasz#include <cam/ctl/ctl_error.h> 63255570Strasz#include <cam/ctl/ctl_frontend.h> 64255570Strasz#include <cam/ctl/ctl_frontend_internal.h> 65255570Strasz#include <cam/ctl/ctl_debug.h> 66255570Strasz#include <cam/ctl/ctl_ha.h> 67255570Strasz#include <cam/ctl/ctl_ioctl.h> 68255570Strasz#include <cam/ctl/ctl_private.h> 69255570Strasz 70255570Strasz#include "../../dev/iscsi/icl.h" 71255570Strasz#include "../../dev/iscsi/iscsi_proto.h" 72255570Strasz#include "ctl_frontend_iscsi.h" 73255570Strasz 74255570Strasz#ifdef ICL_KERNEL_PROXY 75255570Strasz#include <sys/socketvar.h> 76255570Strasz#endif 77255570Strasz 78255570Straszstatic MALLOC_DEFINE(M_CFISCSI, "cfiscsi", "Memory used for CTL iSCSI frontend"); 79255570Straszstatic uma_zone_t cfiscsi_data_wait_zone; 80255570Strasz 81255570StraszSYSCTL_NODE(_kern_cam_ctl, OID_AUTO, iscsi, CTLFLAG_RD, 0, 82255570Strasz "CAM Target Layer iSCSI Frontend"); 83255570Straszstatic int debug = 3; 84255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.debug", &debug); 85255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, debug, CTLFLAG_RW, 86255570Strasz &debug, 1, "Enable debug messages"); 87255570Straszstatic int ping_timeout = 5; 88255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.ping_timeout", &ping_timeout); 89255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RW, 90255570Strasz &ping_timeout, 5, "Interval between ping (NOP-Out) requests, in seconds"); 91255570Straszstatic int login_timeout = 60; 92255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.login_timeout", &login_timeout); 93255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, login_timeout, CTLFLAG_RW, 94255570Strasz &login_timeout, 60, "Time to wait for ctld(8) to finish Login Phase, in seconds"); 95255570Straszstatic int maxcmdsn_delta = 256; 96255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.maxcmdsn_delta", &maxcmdsn_delta); 97255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, maxcmdsn_delta, CTLFLAG_RW, 98255570Strasz &maxcmdsn_delta, 256, "Number of commands the initiator can send " 99255570Strasz "without confirmation"); 100255570Strasz 101255570Strasz#define CFISCSI_DEBUG(X, ...) \ 102255570Strasz if (debug > 1) { \ 103255570Strasz printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 104255570Strasz } while (0) 105255570Strasz 106255570Strasz#define CFISCSI_WARN(X, ...) \ 107255570Strasz if (debug > 0) { \ 108255570Strasz printf("WARNING: %s: " X "\n", \ 109255570Strasz __func__, ## __VA_ARGS__); \ 110255570Strasz } while (0) 111255570Strasz 112255570Strasz#define CFISCSI_SESSION_DEBUG(S, X, ...) \ 113255570Strasz if (debug > 1) { \ 114255570Strasz printf("%s: %s (%s): " X "\n", \ 115255570Strasz __func__, S->cs_initiator_addr, \ 116255570Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 117255570Strasz } while (0) 118255570Strasz 119255570Strasz#define CFISCSI_SESSION_WARN(S, X, ...) \ 120255570Strasz if (debug > 0) { \ 121255570Strasz printf("WARNING: %s (%s): " X "\n", \ 122255570Strasz S->cs_initiator_addr, \ 123255570Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 124255570Strasz } while (0) 125255570Strasz 126255570Strasz#define CFISCSI_SESSION_LOCK(X) mtx_lock(&X->cs_lock) 127255570Strasz#define CFISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->cs_lock) 128255570Strasz#define CFISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->cs_lock, MA_OWNED) 129255570Strasz 130255570Strasz#define CONN_SESSION(X) ((struct cfiscsi_session *)(X)->ic_prv0) 131255570Strasz#define PDU_SESSION(X) CONN_SESSION((X)->ip_conn) 132255570Strasz#define PDU_EXPDATASN(X) (X)->ip_prv0 133255570Strasz#define PDU_TOTAL_TRANSFER_LEN(X) (X)->ip_prv1 134255570Strasz#define PDU_R2TSN(X) (X)->ip_prv2 135255570Strasz 136255570Straszint cfiscsi_init(void); 137255570Straszstatic void cfiscsi_online(void *arg); 138255570Straszstatic void cfiscsi_offline(void *arg); 139255570Straszstatic int cfiscsi_targ_enable(void *arg, struct ctl_id targ_id); 140255570Straszstatic int cfiscsi_targ_disable(void *arg, struct ctl_id targ_id); 141255570Straszstatic int cfiscsi_lun_enable(void *arg, 142255570Strasz struct ctl_id target_id, int lun_id); 143255570Straszstatic int cfiscsi_lun_disable(void *arg, 144255570Strasz struct ctl_id target_id, int lun_id); 145255570Straszstatic int cfiscsi_ioctl(struct cdev *dev, 146255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td); 147255570Straszstatic int cfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len); 148255570Straszstatic void cfiscsi_datamove(union ctl_io *io); 149255570Straszstatic void cfiscsi_done(union ctl_io *io); 150255570Straszstatic uint32_t cfiscsi_map_lun(void *arg, uint32_t lun); 151255848Straszstatic bool cfiscsi_pdu_update_cmdsn(const struct icl_pdu *request); 152255570Straszstatic void cfiscsi_pdu_handle_nop_out(struct icl_pdu *request); 153255570Straszstatic void cfiscsi_pdu_handle_scsi_command(struct icl_pdu *request); 154255570Straszstatic void cfiscsi_pdu_handle_task_request(struct icl_pdu *request); 155255570Straszstatic void cfiscsi_pdu_handle_data_out(struct icl_pdu *request); 156255570Straszstatic void cfiscsi_pdu_handle_logout_request(struct icl_pdu *request); 157255570Straszstatic void cfiscsi_session_terminate(struct cfiscsi_session *cs); 158255570Straszstatic struct cfiscsi_target *cfiscsi_target_find(struct cfiscsi_softc 159255570Strasz *softc, const char *name); 160255570Straszstatic void cfiscsi_target_release(struct cfiscsi_target *ct); 161255570Straszstatic void cfiscsi_session_delete(struct cfiscsi_session *cs); 162255570Strasz 163255570Straszstatic struct cfiscsi_softc cfiscsi_softc; 164255570Straszextern struct ctl_softc *control_softc; 165255570Strasz 166255570Straszstatic int cfiscsi_module_event_handler(module_t, int /*modeventtype_t*/, void *); 167255570Strasz 168255570Straszstatic moduledata_t cfiscsi_moduledata = { 169255570Strasz "ctlcfiscsi", 170255570Strasz cfiscsi_module_event_handler, 171255570Strasz NULL 172255570Strasz}; 173255570Strasz 174255570StraszDECLARE_MODULE(ctlcfiscsi, cfiscsi_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH); 175255570StraszMODULE_VERSION(ctlcfiscsi, 1); 176255570StraszMODULE_DEPEND(ctlcfiscsi, ctl, 1, 1, 1); 177255570StraszMODULE_DEPEND(ctlcfiscsi, icl, 1, 1, 1); 178255570Strasz 179255570Straszstatic struct icl_pdu * 180255570Straszcfiscsi_pdu_new_response(struct icl_pdu *request, int flags) 181255570Strasz{ 182255570Strasz 183255570Strasz return (icl_pdu_new_bhs(request->ip_conn, flags)); 184255570Strasz} 185255570Strasz 186255848Straszstatic bool 187255570Straszcfiscsi_pdu_update_cmdsn(const struct icl_pdu *request) 188255570Strasz{ 189255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 190255570Strasz struct cfiscsi_session *cs; 191255570Strasz uint32_t cmdsn, expstatsn; 192255570Strasz 193255570Strasz cs = PDU_SESSION(request); 194255570Strasz 195255570Strasz /* 196255570Strasz * Every incoming PDU - not just NOP-Out - resets the ping timer. 197255570Strasz * The purpose of the timeout is to reset the connection when it stalls; 198255570Strasz * we don't want this to happen when NOP-In or NOP-Out ends up delayed 199255570Strasz * in some queue. 200255570Strasz * 201255570Strasz * XXX: Locking? 202255570Strasz */ 203255570Strasz cs->cs_timeout = 0; 204255570Strasz 205255570Strasz /* 206255570Strasz * Data-Out PDUs don't contain CmdSN. 207255570Strasz */ 208255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 209255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 210255848Strasz return (false); 211255570Strasz 212255570Strasz /* 213255570Strasz * We're only using fields common for all the request 214255570Strasz * (initiator -> target) PDUs. 215255570Strasz */ 216255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 217255570Strasz cmdsn = ntohl(bhssc->bhssc_cmdsn); 218255570Strasz expstatsn = ntohl(bhssc->bhssc_expstatsn); 219255570Strasz 220255570Strasz CFISCSI_SESSION_LOCK(cs); 221255570Strasz#if 0 222255570Strasz if (expstatsn != cs->cs_statsn) { 223255570Strasz CFISCSI_SESSION_DEBUG(cs, "received PDU with ExpStatSN %d, " 224255570Strasz "while current StatSN is %d", expstatsn, 225255570Strasz cs->cs_statsn); 226255570Strasz } 227255570Strasz#endif 228255570Strasz 229255570Strasz /* 230255848Strasz * The target MUST silently ignore any non-immediate command outside 231255848Strasz * of this range. 232255848Strasz * 233255848Strasz * XXX: ... or non-immediate duplicates within the range. 234255570Strasz */ 235255848Strasz if (cmdsn < cs->cs_cmdsn || cmdsn > cs->cs_cmdsn + maxcmdsn_delta) { 236255848Strasz CFISCSI_SESSION_UNLOCK(cs); 237255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with CmdSN %d, " 238255570Strasz "while expected CmdSN was %d", cmdsn, cs->cs_cmdsn); 239255848Strasz return (true); 240255570Strasz } 241255570Strasz 242255570Strasz if ((request->ip_bhs->bhs_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 243255570Strasz cs->cs_cmdsn++; 244255570Strasz 245255570Strasz CFISCSI_SESSION_UNLOCK(cs); 246255848Strasz 247255848Strasz return (false); 248255570Strasz} 249255570Strasz 250255570Straszstatic void 251255570Straszcfiscsi_pdu_handle(struct icl_pdu *request) 252255570Strasz{ 253255570Strasz struct cfiscsi_session *cs; 254255848Strasz bool ignore; 255255570Strasz 256255570Strasz cs = PDU_SESSION(request); 257255570Strasz 258255848Strasz ignore = cfiscsi_pdu_update_cmdsn(request); 259255848Strasz if (ignore) { 260255848Strasz icl_pdu_free(request); 261255848Strasz return; 262255848Strasz } 263255570Strasz 264255570Strasz /* 265255570Strasz * Handle the PDU; this includes e.g. receiving the remaining 266255570Strasz * part of PDU and submitting the SCSI command to CTL 267255570Strasz * or queueing a reply. The handling routine is responsible 268255570Strasz * for freeing the PDU when it's no longer needed. 269255570Strasz */ 270255570Strasz switch (request->ip_bhs->bhs_opcode & 271255570Strasz ~ISCSI_BHS_OPCODE_IMMEDIATE) { 272255570Strasz case ISCSI_BHS_OPCODE_NOP_OUT: 273255570Strasz cfiscsi_pdu_handle_nop_out(request); 274255570Strasz break; 275255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 276255570Strasz cfiscsi_pdu_handle_scsi_command(request); 277255570Strasz break; 278255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 279255570Strasz cfiscsi_pdu_handle_task_request(request); 280255570Strasz break; 281255570Strasz case ISCSI_BHS_OPCODE_SCSI_DATA_OUT: 282255570Strasz cfiscsi_pdu_handle_data_out(request); 283255570Strasz break; 284255570Strasz case ISCSI_BHS_OPCODE_LOGOUT_REQUEST: 285255570Strasz cfiscsi_pdu_handle_logout_request(request); 286255570Strasz break; 287255570Strasz default: 288255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with unsupported " 289255570Strasz "opcode 0x%x; dropping connection", 290255570Strasz request->ip_bhs->bhs_opcode); 291256197Strasz icl_pdu_free(request); 292255570Strasz cfiscsi_session_terminate(cs); 293255570Strasz } 294255570Strasz 295255570Strasz} 296255570Strasz 297255570Straszstatic void 298255570Straszcfiscsi_receive_callback(struct icl_pdu *request) 299255570Strasz{ 300255570Strasz struct cfiscsi_session *cs; 301255570Strasz 302255570Strasz cs = PDU_SESSION(request); 303255570Strasz 304255570Strasz#ifdef ICL_KERNEL_PROXY 305255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 306255570Strasz if (cs->cs_login_pdu == NULL) 307255570Strasz cs->cs_login_pdu = request; 308255570Strasz else 309255570Strasz icl_pdu_free(request); 310255570Strasz cv_signal(&cs->cs_login_cv); 311255570Strasz return; 312255570Strasz } 313255570Strasz#endif 314255570Strasz 315255570Strasz cfiscsi_pdu_handle(request); 316255570Strasz} 317255570Strasz 318255570Straszstatic void 319255570Straszcfiscsi_error_callback(struct icl_conn *ic) 320255570Strasz{ 321255570Strasz struct cfiscsi_session *cs; 322255570Strasz 323255570Strasz cs = CONN_SESSION(ic); 324255570Strasz 325255570Strasz CFISCSI_SESSION_WARN(cs, "connection error; dropping connection"); 326255570Strasz cfiscsi_session_terminate(cs); 327255570Strasz} 328255570Strasz 329255570Straszstatic int 330255570Straszcfiscsi_pdu_prepare(struct icl_pdu *response) 331255570Strasz{ 332255570Strasz struct cfiscsi_session *cs; 333255570Strasz struct iscsi_bhs_scsi_response *bhssr; 334255570Strasz bool advance_statsn = true; 335255570Strasz 336255570Strasz cs = PDU_SESSION(response); 337255570Strasz 338255570Strasz CFISCSI_SESSION_LOCK_ASSERT(cs); 339255570Strasz 340255570Strasz /* 341255570Strasz * We're only using fields common for all the response 342255570Strasz * (target -> initiator) PDUs. 343255570Strasz */ 344255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 345255570Strasz 346255570Strasz /* 347255570Strasz * 10.8.3: "The StatSN for this connection is not advanced 348255570Strasz * after this PDU is sent." 349255570Strasz */ 350255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_R2T) 351255570Strasz advance_statsn = false; 352255570Strasz 353255570Strasz /* 354255570Strasz * 10.19.2: "However, when the Initiator Task Tag is set to 0xffffffff, 355255570Strasz * StatSN for the connection is not advanced after this PDU is sent." 356255570Strasz */ 357255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_NOP_IN && 358255570Strasz bhssr->bhssr_initiator_task_tag == 0xffffffff) 359255570Strasz advance_statsn = false; 360255570Strasz 361255570Strasz /* 362255570Strasz * See the comment below - StatSN is not meaningful and must 363255570Strasz * not be advanced. 364255570Strasz */ 365255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_SCSI_DATA_IN) 366255570Strasz advance_statsn = false; 367255570Strasz 368255570Strasz /* 369255570Strasz * 10.7.3: "The fields StatSN, Status, and Residual Count 370255570Strasz * only have meaningful content if the S bit is set to 1." 371255570Strasz */ 372255570Strasz if (bhssr->bhssr_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN) 373255570Strasz bhssr->bhssr_statsn = htonl(cs->cs_statsn); 374255570Strasz bhssr->bhssr_expcmdsn = htonl(cs->cs_cmdsn); 375255570Strasz bhssr->bhssr_maxcmdsn = htonl(cs->cs_cmdsn + maxcmdsn_delta); 376255570Strasz 377255570Strasz if (advance_statsn) 378255570Strasz cs->cs_statsn++; 379255570Strasz 380255570Strasz return (0); 381255570Strasz} 382255570Strasz 383255570Straszstatic void 384255570Straszcfiscsi_pdu_queue(struct icl_pdu *response) 385255570Strasz{ 386255570Strasz struct cfiscsi_session *cs; 387255570Strasz 388255570Strasz cs = PDU_SESSION(response); 389255570Strasz 390255570Strasz CFISCSI_SESSION_LOCK(cs); 391255570Strasz cfiscsi_pdu_prepare(response); 392255570Strasz icl_pdu_queue(response); 393255570Strasz CFISCSI_SESSION_UNLOCK(cs); 394255570Strasz} 395255570Strasz 396255570Straszstatic uint32_t 397255570Straszcfiscsi_decode_lun(uint64_t encoded) 398255570Strasz{ 399255570Strasz uint8_t lun[8]; 400255570Strasz uint32_t result; 401255570Strasz 402255570Strasz /* 403255570Strasz * The LUN field in iSCSI PDUs may look like an ordinary 64 bit number, 404255570Strasz * but is in fact an evil, multidimensional structure defined 405255570Strasz * in SCSI Architecture Model 5 (SAM-5), section 4.6. 406255570Strasz */ 407255570Strasz memcpy(lun, &encoded, sizeof(lun)); 408255570Strasz switch (lun[0] & 0xC0) { 409255570Strasz case 0x00: 410255570Strasz if ((lun[0] & 0x3f) != 0 || lun[2] != 0 || lun[3] != 0 || 411255570Strasz lun[4] != 0 || lun[5] != 0 || lun[6] != 0 || lun[7] != 0) { 412255570Strasz CFISCSI_WARN("malformed LUN " 413255570Strasz "(peripheral device addressing method): 0x%jx", 414255570Strasz (uintmax_t)encoded); 415255570Strasz result = 0xffffffff; 416255570Strasz break; 417255570Strasz } 418255570Strasz result = lun[1]; 419255570Strasz break; 420255570Strasz case 0x40: 421255570Strasz if (lun[2] != 0 || lun[3] != 0 || lun[4] != 0 || lun[5] != 0 || 422255570Strasz lun[6] != 0 || lun[7] != 0) { 423255570Strasz CFISCSI_WARN("malformed LUN " 424255570Strasz "(flat address space addressing method): 0x%jx", 425255570Strasz (uintmax_t)encoded); 426255570Strasz result = 0xffffffff; 427255570Strasz break; 428255570Strasz } 429255570Strasz result = ((lun[0] & 0x3f) << 8) + lun[1]; 430255570Strasz break; 431255570Strasz case 0xC0: 432255570Strasz if (lun[0] != 0xD2 || lun[4] != 0 || lun[5] != 0 || 433255570Strasz lun[6] != 0 || lun[7] != 0) { 434255570Strasz CFISCSI_WARN("malformed LUN (extended flat " 435255570Strasz "address space addressing method): 0x%jx", 436255570Strasz (uintmax_t)encoded); 437255570Strasz result = 0xffffffff; 438255570Strasz break; 439255570Strasz } 440255570Strasz result = (lun[1] << 16) + (lun[2] << 8) + lun[3]; 441255570Strasz default: 442255570Strasz CFISCSI_WARN("unsupported LUN format 0x%jx", 443255570Strasz (uintmax_t)encoded); 444255570Strasz result = 0xffffffff; 445255570Strasz break; 446255570Strasz } 447255570Strasz 448255570Strasz return (result); 449255570Strasz} 450255570Strasz 451255570Straszstatic void 452255570Straszcfiscsi_pdu_handle_nop_out(struct icl_pdu *request) 453255570Strasz{ 454255570Strasz struct cfiscsi_session *cs; 455255570Strasz struct iscsi_bhs_nop_out *bhsno; 456255570Strasz struct iscsi_bhs_nop_in *bhsni; 457255570Strasz struct icl_pdu *response; 458256187Strasz void *data = NULL; 459256187Strasz size_t datasize; 460256187Strasz int error; 461255570Strasz 462255570Strasz cs = PDU_SESSION(request); 463255570Strasz bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 464255570Strasz 465255570Strasz if (bhsno->bhsno_initiator_task_tag == 0xffffffff) { 466255570Strasz /* 467255570Strasz * Nothing to do, iscsi_pdu_update_statsn() already 468255570Strasz * zeroed the timeout. 469255570Strasz */ 470255570Strasz icl_pdu_free(request); 471255570Strasz return; 472255570Strasz } 473255570Strasz 474256187Strasz datasize = icl_pdu_data_segment_length(request); 475256187Strasz if (datasize > 0) { 476256187Strasz data = malloc(datasize, M_CFISCSI, M_NOWAIT | M_ZERO); 477256187Strasz if (data == NULL) { 478256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 479256187Strasz "dropping connection"); 480256187Strasz icl_pdu_free(request); 481256187Strasz cfiscsi_session_terminate(cs); 482256187Strasz return; 483256187Strasz } 484256187Strasz icl_pdu_get_data(request, 0, data, datasize); 485256187Strasz } 486256187Strasz 487255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 488255570Strasz if (response == NULL) { 489256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 490256187Strasz "droppping connection"); 491256187Strasz free(data, M_CFISCSI); 492255570Strasz icl_pdu_free(request); 493256187Strasz cfiscsi_session_terminate(cs); 494255570Strasz return; 495255570Strasz } 496255570Strasz bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 497255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 498255570Strasz bhsni->bhsni_flags = 0x80; 499255570Strasz bhsni->bhsni_initiator_task_tag = bhsno->bhsno_initiator_task_tag; 500255570Strasz bhsni->bhsni_target_transfer_tag = 0xffffffff; 501256187Strasz if (datasize > 0) { 502256187Strasz error = icl_pdu_append_data(response, data, datasize, M_NOWAIT); 503256187Strasz if (error != 0) { 504256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 505256187Strasz "dropping connection"); 506256187Strasz free(data, M_CFISCSI); 507256187Strasz icl_pdu_free(request); 508256187Strasz icl_pdu_free(response); 509256187Strasz cfiscsi_session_terminate(cs); 510256187Strasz return; 511256187Strasz } 512256187Strasz free(data, M_CFISCSI); 513256187Strasz } 514255570Strasz 515255570Strasz icl_pdu_free(request); 516255570Strasz cfiscsi_pdu_queue(response); 517255570Strasz} 518255570Strasz 519255570Straszstatic void 520255570Straszcfiscsi_pdu_handle_scsi_command(struct icl_pdu *request) 521255570Strasz{ 522255570Strasz struct iscsi_bhs_scsi_command *bhssc; 523255570Strasz struct cfiscsi_session *cs; 524255570Strasz union ctl_io *io; 525255570Strasz int error; 526255570Strasz 527255570Strasz cs = PDU_SESSION(request); 528255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 529255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 530255570Strasz // bhssc->bhssc_initiator_task_tag); 531255570Strasz 532255570Strasz if (request->ip_data_len > 0 && cs->cs_immediate_data == false) { 533255570Strasz CFISCSI_SESSION_WARN(cs, "unsolicited data with " 534255570Strasz "ImmediateData=No; dropping connection"); 535256197Strasz icl_pdu_free(request); 536255570Strasz cfiscsi_session_terminate(cs); 537255570Strasz return; 538255570Strasz } 539255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 540255570Strasz if (io == NULL) { 541256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io; " 542256197Strasz "dropping connection"); 543255570Strasz icl_pdu_free(request); 544256197Strasz cfiscsi_session_terminate(cs); 545255570Strasz return; 546255570Strasz } 547255570Strasz ctl_zero_io(io); 548255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 549255570Strasz io->io_hdr.io_type = CTL_IO_SCSI; 550255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 551255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_softc->fe.targ_port; 552255570Strasz io->io_hdr.nexus.targ_target.id = 0; 553255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhssc->bhssc_lun); 554255570Strasz io->io_hdr.nexus.lun_map_fn = cfiscsi_map_lun; 555255570Strasz io->io_hdr.nexus.lun_map_arg = cs; 556255570Strasz io->scsiio.tag_num = bhssc->bhssc_initiator_task_tag; 557255570Strasz switch ((bhssc->bhssc_flags & BHSSC_FLAGS_ATTR)) { 558255570Strasz case BHSSC_FLAGS_ATTR_UNTAGGED: 559255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 560255570Strasz break; 561255570Strasz case BHSSC_FLAGS_ATTR_SIMPLE: 562255570Strasz io->scsiio.tag_type = CTL_TAG_SIMPLE; 563255570Strasz break; 564255570Strasz case BHSSC_FLAGS_ATTR_ORDERED: 565255570Strasz io->scsiio.tag_type = CTL_TAG_ORDERED; 566255570Strasz break; 567255570Strasz case BHSSC_FLAGS_ATTR_HOQ: 568255570Strasz io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 569255570Strasz break; 570255570Strasz case BHSSC_FLAGS_ATTR_ACA: 571255570Strasz io->scsiio.tag_type = CTL_TAG_ACA; 572255570Strasz break; 573255570Strasz default: 574255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 575255570Strasz CFISCSI_SESSION_WARN(cs, "unhandled tag type %d", 576255570Strasz bhssc->bhssc_flags & BHSSC_FLAGS_ATTR); 577255570Strasz break; 578255570Strasz } 579255570Strasz io->scsiio.cdb_len = sizeof(bhssc->bhssc_cdb); /* Which is 16. */ 580255570Strasz memcpy(io->scsiio.cdb, bhssc->bhssc_cdb, sizeof(bhssc->bhssc_cdb)); 581255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 582255570Strasz error = ctl_queue(io); 583255570Strasz if (error != CTL_RETVAL_COMPLETE) { 584256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 585256197Strasz "dropping connection", error); 586255570Strasz ctl_free_io(io); 587255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 588255570Strasz icl_pdu_free(request); 589256197Strasz cfiscsi_session_terminate(cs); 590255570Strasz } 591255570Strasz} 592255570Strasz 593255570Straszstatic void 594255570Straszcfiscsi_pdu_handle_task_request(struct icl_pdu *request) 595255570Strasz{ 596255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 597255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 598255570Strasz struct icl_pdu *response; 599255570Strasz struct cfiscsi_session *cs; 600255570Strasz union ctl_io *io; 601255570Strasz int error; 602255570Strasz 603255570Strasz cs = PDU_SESSION(request); 604255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 605255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 606255570Strasz if (io == NULL) { 607256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io;" 608256197Strasz "dropping connection"); 609255570Strasz icl_pdu_free(request); 610256197Strasz cfiscsi_session_terminate(cs); 611255570Strasz return; 612255570Strasz } 613255570Strasz ctl_zero_io(io); 614255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 615255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 616255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 617255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_softc->fe.targ_port; 618255570Strasz io->io_hdr.nexus.targ_target.id = 0; 619255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhstmr->bhstmr_lun); 620255570Strasz io->io_hdr.nexus.lun_map_fn = cfiscsi_map_lun; 621255570Strasz io->io_hdr.nexus.lun_map_arg = cs; 622255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 623255570Strasz 624255570Strasz switch (bhstmr->bhstmr_function & ~0x80) { 625255570Strasz case BHSTMR_FUNCTION_ABORT_TASK: 626255570Strasz#if 0 627255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK"); 628255570Strasz#endif 629255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 630255570Strasz io->taskio.tag_num = bhstmr->bhstmr_referenced_task_tag; 631255570Strasz break; 632255570Strasz case BHSTMR_FUNCTION_LOGICAL_UNIT_RESET: 633255570Strasz#if 0 634255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_LOGICAL_UNIT_RESET"); 635255570Strasz#endif 636255570Strasz io->taskio.task_action = CTL_TASK_LUN_RESET; 637255570Strasz break; 638255570Strasz case BHSTMR_FUNCTION_TARGET_COLD_RESET: 639255570Strasz#if 0 640255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_TARGET_COLD_RESET"); 641255570Strasz#endif 642255570Strasz io->taskio.task_action = CTL_TASK_BUS_RESET; 643255570Strasz break; 644255570Strasz default: 645255570Strasz CFISCSI_SESSION_DEBUG(cs, "unsupported function 0x%x", 646255570Strasz bhstmr->bhstmr_function & ~0x80); 647255570Strasz ctl_free_io(io); 648255570Strasz 649255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 650255570Strasz if (response == NULL) { 651256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 652256197Strasz "dropping connection"); 653255570Strasz icl_pdu_free(request); 654256197Strasz cfiscsi_session_terminate(cs); 655255570Strasz return; 656255570Strasz } 657255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 658255570Strasz response->ip_bhs; 659255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 660255570Strasz bhstmr2->bhstmr_flags = 0x80; 661255570Strasz bhstmr2->bhstmr_response = 662255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 663255570Strasz bhstmr2->bhstmr_initiator_task_tag = 664255570Strasz bhstmr->bhstmr_initiator_task_tag; 665255570Strasz icl_pdu_free(request); 666255570Strasz cfiscsi_pdu_queue(response); 667255570Strasz return; 668255570Strasz } 669255570Strasz 670255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 671255570Strasz error = ctl_queue(io); 672255570Strasz if (error != CTL_RETVAL_COMPLETE) { 673256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 674256197Strasz "dropping connection", error); 675255570Strasz ctl_free_io(io); 676255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 677255570Strasz icl_pdu_free(request); 678256197Strasz cfiscsi_session_terminate(cs); 679255570Strasz } 680255570Strasz} 681255570Strasz 682255570Straszstatic bool 683255570Straszcfiscsi_handle_data_segment(struct icl_pdu *request, struct cfiscsi_data_wait *cdw) 684255570Strasz{ 685255570Strasz struct iscsi_bhs_data_out *bhsdo; 686255570Strasz struct cfiscsi_session *cs; 687255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 688256195Strasz size_t copy_len, len, off, buffer_offset; 689255570Strasz int ctl_sg_count; 690255570Strasz union ctl_io *io; 691255570Strasz 692255570Strasz cs = PDU_SESSION(request); 693255570Strasz 694255570Strasz KASSERT((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 695255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT || 696255570Strasz (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 697255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 698255570Strasz ("bad opcode 0x%x", request->ip_bhs->bhs_opcode)); 699255570Strasz 700255570Strasz /* 701255570Strasz * We're only using fields common for Data Out and SCSI Command PDUs. 702255570Strasz */ 703255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 704255570Strasz 705255570Strasz io = cdw->cdw_ctl_io; 706255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 707255570Strasz ("CTL_FLAG_DATA_IN")); 708255570Strasz 709255570Strasz#if 0 710255570Strasz CFISCSI_SESSION_DEBUG(cs, "received %zd bytes out of %d", 711255570Strasz request->ip_data_len, io->scsiio.kern_total_len); 712255570Strasz#endif 713255570Strasz 714255570Strasz if (io->scsiio.kern_sg_entries > 0) { 715255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 716255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 717255570Strasz } else { 718255570Strasz ctl_sglist = &ctl_sg_entry; 719255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 720255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 721255570Strasz ctl_sg_count = 1; 722255570Strasz } 723255570Strasz#if 0 724255570Strasz if (ctl_sg_count > 1) 725255570Strasz CFISCSI_SESSION_DEBUG(cs, "ctl_sg_count = %d", ctl_sg_count); 726255570Strasz#endif 727255570Strasz 728255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 729255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 730255570Strasz buffer_offset = ntohl(bhsdo->bhsdo_buffer_offset); 731255570Strasz else 732255570Strasz buffer_offset = 0; 733255570Strasz 734255570Strasz /* 735255570Strasz * Make sure the offset, as sent by the initiator, matches the offset 736255570Strasz * we're supposed to be at in the scatter-gather list. 737255570Strasz */ 738255570Strasz if (buffer_offset != io->scsiio.ext_data_filled) { 739255570Strasz CFISCSI_SESSION_WARN(cs, "received bad buffer offset %zd, " 740255570Strasz "expected %zd", buffer_offset, 741255570Strasz (size_t)io->scsiio.ext_data_filled); 742255570Strasz cfiscsi_session_terminate(cs); 743255570Strasz return (true); 744255570Strasz } 745255570Strasz 746256195Strasz /* 747256195Strasz * This is the offset within the PDU data segment, as opposed 748256195Strasz * to buffer_offset, which is the offset within the task (SCSI 749256195Strasz * command). 750256195Strasz */ 751255570Strasz off = 0; 752256195Strasz len = icl_pdu_data_segment_length(request); 753256195Strasz 754256195Strasz /* 755256195Strasz * Iterate over the scatter/gather segments, filling them with data 756256195Strasz * from the PDU data segment. Note that this can get called multiple 757256195Strasz * times for one SCSI command; the cdw structure holds state for the 758256195Strasz * scatter/gather list. 759256195Strasz */ 760255570Strasz for (;;) { 761255570Strasz KASSERT(cdw->cdw_sg_index < ctl_sg_count, 762255570Strasz ("cdw->cdw_sg_index >= ctl_sg_count")); 763255570Strasz if (cdw->cdw_sg_len == 0) { 764255570Strasz cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 765255570Strasz cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 766255570Strasz } 767256195Strasz KASSERT(off <= len, ("len > off")); 768256195Strasz copy_len = len - off; 769255570Strasz if (copy_len > cdw->cdw_sg_len) 770255570Strasz copy_len = cdw->cdw_sg_len; 771255570Strasz 772255570Strasz icl_pdu_get_data(request, off, cdw->cdw_sg_addr, copy_len); 773255570Strasz cdw->cdw_sg_addr += copy_len; 774255570Strasz cdw->cdw_sg_len -= copy_len; 775255570Strasz off += copy_len; 776255570Strasz io->scsiio.ext_data_filled += copy_len; 777255570Strasz 778255570Strasz if (cdw->cdw_sg_len == 0) { 779256195Strasz /* 780256195Strasz * End of current segment. 781256195Strasz */ 782256195Strasz if (cdw->cdw_sg_index == ctl_sg_count - 1) { 783256195Strasz /* 784256195Strasz * Last segment in scatter/gather list. 785256195Strasz */ 786255570Strasz break; 787256195Strasz } 788255570Strasz cdw->cdw_sg_index++; 789255570Strasz } 790256195Strasz 791256195Strasz if (off == len) { 792256195Strasz /* 793256195Strasz * End of PDU payload. 794256195Strasz */ 795255570Strasz break; 796256195Strasz } 797255570Strasz } 798255570Strasz 799256195Strasz if (len > off) { 800255570Strasz CFISCSI_SESSION_WARN(cs, "received too much data: got %zd bytes, " 801255570Strasz "expected %zd", icl_pdu_data_segment_length(request), off); 802255570Strasz cfiscsi_session_terminate(cs); 803255570Strasz return (true); 804255570Strasz } 805255570Strasz 806255570Strasz if (bhsdo->bhsdo_flags & BHSDO_FLAGS_F || 807255570Strasz io->scsiio.ext_data_filled == io->scsiio.kern_total_len) { 808255570Strasz if ((bhsdo->bhsdo_flags & BHSDO_FLAGS_F) == 0) { 809255570Strasz CFISCSI_SESSION_WARN(cs, "got the final packet without " 810255570Strasz "the F flag; flags = 0x%x; dropping connection", 811255570Strasz bhsdo->bhsdo_flags); 812255570Strasz cfiscsi_session_terminate(cs); 813255570Strasz return (true); 814255570Strasz } 815255570Strasz 816255570Strasz if (io->scsiio.ext_data_filled != io->scsiio.kern_total_len) { 817255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 818255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 819255570Strasz CFISCSI_SESSION_WARN(cs, "got the final packet, but the " 820255570Strasz "transmitted size was %zd bytes instead of %d; " 821255570Strasz "dropping connection", 822255570Strasz (size_t)io->scsiio.ext_data_filled, 823255570Strasz io->scsiio.kern_total_len); 824255570Strasz cfiscsi_session_terminate(cs); 825255570Strasz return (true); 826255570Strasz } else { 827255570Strasz /* 828255570Strasz * For SCSI Command PDU, this just means we need to 829255570Strasz * solicit more data by sending R2T. 830255570Strasz */ 831255570Strasz return (false); 832255570Strasz } 833255570Strasz } 834255570Strasz#if 0 835255570Strasz CFISCSI_SESSION_DEBUG(cs, "no longer expecting Data-Out with target " 836255570Strasz "transfer tag 0x%x", cdw->cdw_target_transfer_tag); 837255570Strasz#endif 838255570Strasz 839255570Strasz return (true); 840255570Strasz } 841255570Strasz 842255570Strasz return (false); 843255570Strasz} 844255570Strasz 845255570Straszstatic void 846255570Straszcfiscsi_pdu_handle_data_out(struct icl_pdu *request) 847255570Strasz{ 848255570Strasz struct iscsi_bhs_data_out *bhsdo; 849255570Strasz struct cfiscsi_session *cs; 850255570Strasz struct cfiscsi_data_wait *cdw = NULL; 851255570Strasz union ctl_io *io; 852255570Strasz bool done; 853255570Strasz 854255570Strasz cs = PDU_SESSION(request); 855255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 856255570Strasz 857255570Strasz CFISCSI_SESSION_LOCK(cs); 858255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) { 859255570Strasz#if 0 860255570Strasz CFISCSI_SESSION_DEBUG(cs, "have ttt 0x%x, itt 0x%x; looking for " 861255570Strasz "ttt 0x%x, itt 0x%x", 862255570Strasz bhsdo->bhsdo_target_transfer_tag, 863255570Strasz bhsdo->bhsdo_initiator_task_tag, 864255570Strasz cdw->cdw_target_transfer_tag, cdw->cdw_initiator_task_tag)); 865255570Strasz#endif 866255570Strasz if (bhsdo->bhsdo_target_transfer_tag == 867255570Strasz cdw->cdw_target_transfer_tag) 868255570Strasz break; 869255570Strasz } 870255570Strasz CFISCSI_SESSION_UNLOCK(cs); 871255570Strasz if (cdw == NULL) { 872255570Strasz CFISCSI_SESSION_WARN(cs, "data transfer tag 0x%x, initiator task tag " 873256197Strasz "0x%x, not found; dropping connection", 874256197Strasz bhsdo->bhsdo_target_transfer_tag, bhsdo->bhsdo_initiator_task_tag); 875255570Strasz icl_pdu_free(request); 876255570Strasz cfiscsi_session_terminate(cs); 877255570Strasz return; 878255570Strasz } 879255570Strasz 880255570Strasz io = cdw->cdw_ctl_io; 881255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 882255570Strasz ("CTL_FLAG_DATA_IN")); 883255570Strasz 884255570Strasz done = cfiscsi_handle_data_segment(request, cdw); 885255570Strasz if (done) { 886255570Strasz CFISCSI_SESSION_LOCK(cs); 887255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 888255570Strasz CFISCSI_SESSION_UNLOCK(cs); 889255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 890255570Strasz io->scsiio.be_move_done(io); 891255570Strasz } 892255570Strasz 893255570Strasz icl_pdu_free(request); 894255570Strasz} 895255570Strasz 896255570Straszstatic void 897255570Straszcfiscsi_pdu_handle_logout_request(struct icl_pdu *request) 898255570Strasz{ 899255570Strasz struct iscsi_bhs_logout_request *bhslr; 900255570Strasz struct iscsi_bhs_logout_response *bhslr2; 901255570Strasz struct icl_pdu *response; 902255570Strasz struct cfiscsi_session *cs; 903255570Strasz 904255570Strasz cs = PDU_SESSION(request); 905255570Strasz bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 906255570Strasz switch (bhslr->bhslr_reason & 0x7f) { 907255570Strasz case BHSLR_REASON_CLOSE_SESSION: 908255570Strasz case BHSLR_REASON_CLOSE_CONNECTION: 909255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 910255570Strasz if (response == NULL) { 911256197Strasz CFISCSI_SESSION_DEBUG(cs, "failed to allocate memory"); 912255570Strasz icl_pdu_free(request); 913255570Strasz cfiscsi_session_terminate(cs); 914255570Strasz return; 915255570Strasz } 916255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 917255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 918255570Strasz bhslr2->bhslr_flags = 0x80; 919255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_CLOSED_SUCCESSFULLY; 920255570Strasz bhslr2->bhslr_initiator_task_tag = 921255570Strasz bhslr->bhslr_initiator_task_tag; 922255570Strasz icl_pdu_free(request); 923255570Strasz cfiscsi_pdu_queue(response); 924255570Strasz cfiscsi_session_terminate(cs); 925255570Strasz break; 926255570Strasz case BHSLR_REASON_REMOVE_FOR_RECOVERY: 927255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 928255570Strasz if (response == NULL) { 929256197Strasz CFISCSI_SESSION_WARN(cs, 930256197Strasz "failed to allocate memory; dropping connection"); 931255570Strasz icl_pdu_free(request); 932255570Strasz cfiscsi_session_terminate(cs); 933255570Strasz return; 934255570Strasz } 935255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 936255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 937255570Strasz bhslr2->bhslr_flags = 0x80; 938255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_RECOVERY_NOT_SUPPORTED; 939255570Strasz bhslr2->bhslr_initiator_task_tag = 940255570Strasz bhslr->bhslr_initiator_task_tag; 941255570Strasz icl_pdu_free(request); 942255570Strasz cfiscsi_pdu_queue(response); 943255570Strasz break; 944255570Strasz default: 945255570Strasz CFISCSI_SESSION_WARN(cs, "invalid reason 0%x; dropping connection", 946255570Strasz bhslr->bhslr_reason); 947255570Strasz icl_pdu_free(request); 948255570Strasz cfiscsi_session_terminate(cs); 949255570Strasz break; 950255570Strasz } 951255570Strasz} 952255570Strasz 953255570Straszstatic void 954255570Straszcfiscsi_callout(void *context) 955255570Strasz{ 956255570Strasz struct icl_pdu *cp; 957255570Strasz struct iscsi_bhs_nop_in *bhsni; 958255570Strasz struct cfiscsi_session *cs; 959255570Strasz 960255570Strasz cs = context; 961255570Strasz 962255570Strasz if (cs->cs_terminating) 963255570Strasz return; 964255570Strasz 965255570Strasz callout_schedule(&cs->cs_callout, 1 * hz); 966255570Strasz 967255570Strasz CFISCSI_SESSION_LOCK(cs); 968255570Strasz cs->cs_timeout++; 969255570Strasz CFISCSI_SESSION_UNLOCK(cs); 970255570Strasz 971255570Strasz#ifdef ICL_KERNEL_PROXY 972255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 973255570Strasz if (cs->cs_timeout > login_timeout) { 974255570Strasz CFISCSI_SESSION_WARN(cs, "login timed out after " 975255570Strasz "%d seconds; dropping connection", cs->cs_timeout); 976255570Strasz cfiscsi_session_terminate(cs); 977255570Strasz } 978255570Strasz return; 979255570Strasz } 980255570Strasz#endif 981255570Strasz 982255570Strasz if (cs->cs_timeout >= ping_timeout) { 983255570Strasz CFISCSI_SESSION_WARN(cs, "no ping reply (NOP-Out) after %d seconds; " 984255570Strasz "dropping connection", ping_timeout); 985255570Strasz cfiscsi_session_terminate(cs); 986255570Strasz return; 987255570Strasz } 988255570Strasz 989255570Strasz /* 990255570Strasz * If the ping was reset less than one second ago - which means 991255570Strasz * that we've received some PDU during the last second - assume 992255570Strasz * the traffic flows correctly and don't bother sending a NOP-Out. 993255570Strasz * 994255570Strasz * (It's 2 - one for one second, and one for incrementing is_timeout 995255570Strasz * earlier in this routine.) 996255570Strasz */ 997255570Strasz if (cs->cs_timeout < 2) 998255570Strasz return; 999255570Strasz 1000255824Strasz cp = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1001255824Strasz if (cp == NULL) { 1002256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory"); 1003255824Strasz return; 1004255824Strasz } 1005255570Strasz bhsni = (struct iscsi_bhs_nop_in *)cp->ip_bhs; 1006255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 1007255570Strasz bhsni->bhsni_flags = 0x80; 1008255570Strasz bhsni->bhsni_initiator_task_tag = 0xffffffff; 1009255570Strasz 1010255570Strasz cfiscsi_pdu_queue(cp); 1011255570Strasz} 1012255570Strasz 1013255570Straszstatic void 1014255570Straszcfiscsi_session_terminate_tasks(struct cfiscsi_session *cs) 1015255570Strasz{ 1016255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 1017255570Strasz union ctl_io *io; 1018255570Strasz int error; 1019255570Strasz 1020255570Strasz#ifdef notyet 1021255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 1022255570Strasz if (io == NULL) { 1023255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 1024255570Strasz return; 1025255570Strasz } 1026255570Strasz ctl_zero_io(io); 1027255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 1028255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1029255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1030255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_softc->fe.targ_port; 1031255570Strasz io->io_hdr.nexus.targ_target.id = 0; 1032255570Strasz io->io_hdr.nexus.targ_lun = lun; 1033255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1034255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK_SET; 1035255570Strasz error = ctl_queue(io); 1036255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1037255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1038255570Strasz ctl_free_io(io); 1039255570Strasz } 1040255570Strasz#else 1041255570Strasz /* 1042255570Strasz * CTL doesn't currently support CTL_TASK_ABORT_TASK_SET, so instead 1043255570Strasz * just iterate over tasks that are waiting for something - data - and 1044255570Strasz * terminate those. 1045255570Strasz */ 1046255570Strasz CFISCSI_SESSION_LOCK(cs); 1047255570Strasz TAILQ_FOREACH_SAFE(cdw, 1048255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 1049255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 1050255570Strasz if (io == NULL) { 1051255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 1052255570Strasz return; 1053255570Strasz } 1054255570Strasz ctl_zero_io(io); 1055255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 1056255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1057255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1058255570Strasz io->io_hdr.nexus.targ_port = 1059255570Strasz cs->cs_target->ct_softc->fe.targ_port; 1060255570Strasz io->io_hdr.nexus.targ_target.id = 0; 1061255570Strasz //io->io_hdr.nexus.targ_lun = lun; /* Not needed? */ 1062255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1063255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 1064255570Strasz io->taskio.tag_num = cdw->cdw_initiator_task_tag; 1065255570Strasz error = ctl_queue(io); 1066255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1067255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1068255570Strasz ctl_free_io(io); 1069255570Strasz return; 1070255570Strasz } 1071255570Strasz#if 0 1072255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task tag " 1073255570Strasz "0x%x", cdw->cdw_initiator_task_tag); 1074255570Strasz#endif 1075255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 1076255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 1077255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 1078255570Strasz } 1079255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1080255570Strasz#endif 1081255570Strasz} 1082255570Strasz 1083255570Straszstatic void 1084255570Straszcfiscsi_maintenance_thread(void *arg) 1085255570Strasz{ 1086255570Strasz struct cfiscsi_session *cs; 1087255570Strasz 1088255570Strasz cs = arg; 1089255570Strasz 1090255570Strasz for (;;) { 1091255570Strasz CFISCSI_SESSION_LOCK(cs); 1092255570Strasz if (cs->cs_terminating == false) 1093255570Strasz cv_wait(&cs->cs_maintenance_cv, &cs->cs_lock); 1094255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1095255570Strasz 1096255570Strasz if (cs->cs_terminating) { 1097255570Strasz cfiscsi_session_terminate_tasks(cs); 1098255570Strasz callout_drain(&cs->cs_callout); 1099255570Strasz 1100255570Strasz icl_conn_shutdown(cs->cs_conn); 1101255570Strasz icl_conn_close(cs->cs_conn); 1102255570Strasz 1103255570Strasz cs->cs_terminating++; 1104255570Strasz 1105255570Strasz /* 1106255570Strasz * XXX: We used to wait up to 30 seconds to deliver queued PDUs 1107255570Strasz * to the initiator. We also tried hard to deliver SCSI Responses 1108255570Strasz * for the aborted PDUs. We don't do that anymore. We might need 1109255570Strasz * to revisit that. 1110255570Strasz */ 1111255570Strasz 1112255570Strasz cfiscsi_session_delete(cs); 1113255570Strasz kthread_exit(); 1114255570Strasz return; 1115255570Strasz } 1116255570Strasz CFISCSI_SESSION_DEBUG(cs, "nothing to do"); 1117255570Strasz } 1118255570Strasz} 1119255570Strasz 1120255570Straszstatic void 1121255570Straszcfiscsi_session_terminate(struct cfiscsi_session *cs) 1122255570Strasz{ 1123255570Strasz 1124255570Strasz if (cs->cs_terminating != 0) 1125255570Strasz return; 1126255570Strasz cs->cs_terminating = 1; 1127255570Strasz cv_signal(&cs->cs_maintenance_cv); 1128255570Strasz} 1129255570Strasz 1130255570Straszstatic int 1131255570Straszcfiscsi_session_register_initiator(struct cfiscsi_session *cs) 1132255570Strasz{ 1133255570Strasz int error, i; 1134255570Strasz struct cfiscsi_softc *softc; 1135255570Strasz 1136255570Strasz KASSERT(cs->cs_ctl_initid == -1, ("already registered")); 1137255570Strasz 1138255570Strasz softc = &cfiscsi_softc; 1139255570Strasz 1140255570Strasz mtx_lock(&softc->lock); 1141255570Strasz for (i = 0; i < softc->max_initiators; i++) { 1142255570Strasz if (softc->ctl_initids[i] == 0) 1143255570Strasz break; 1144255570Strasz } 1145255570Strasz if (i == softc->max_initiators) { 1146255570Strasz CFISCSI_SESSION_WARN(cs, "too many concurrent sessions (%d)", 1147255570Strasz softc->max_initiators); 1148255570Strasz mtx_unlock(&softc->lock); 1149255570Strasz return (1); 1150255570Strasz } 1151255570Strasz softc->ctl_initids[i] = 1; 1152255570Strasz mtx_unlock(&softc->lock); 1153255570Strasz 1154255570Strasz#if 0 1155255570Strasz CFISCSI_SESSION_DEBUG(cs, "adding initiator id %d, max %d", 1156255570Strasz i, softc->max_initiators); 1157255570Strasz#endif 1158255570Strasz cs->cs_ctl_initid = i; 1159255570Strasz error = ctl_add_initiator(0x0, softc->fe.targ_port, cs->cs_ctl_initid); 1160255570Strasz if (error != 0) { 1161255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_add_initiator failed with error %d", error); 1162255570Strasz mtx_lock(&softc->lock); 1163255570Strasz softc->ctl_initids[cs->cs_ctl_initid] = 0; 1164255570Strasz mtx_unlock(&softc->lock); 1165255570Strasz cs->cs_ctl_initid = -1; 1166255570Strasz return (1); 1167255570Strasz } 1168255570Strasz 1169255570Strasz return (0); 1170255570Strasz} 1171255570Strasz 1172255570Straszstatic void 1173255570Straszcfiscsi_session_unregister_initiator(struct cfiscsi_session *cs) 1174255570Strasz{ 1175255570Strasz int error; 1176255570Strasz struct cfiscsi_softc *softc; 1177255570Strasz 1178255570Strasz if (cs->cs_ctl_initid == -1) 1179255570Strasz return; 1180255570Strasz 1181255570Strasz softc = &cfiscsi_softc; 1182255570Strasz 1183255570Strasz error = ctl_remove_initiator(softc->fe.targ_port, cs->cs_ctl_initid); 1184255570Strasz if (error != 0) { 1185255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_remove_initiator failed with error %d", 1186255570Strasz error); 1187255570Strasz } 1188255570Strasz mtx_lock(&softc->lock); 1189255570Strasz softc->ctl_initids[cs->cs_ctl_initid] = 0; 1190255570Strasz mtx_unlock(&softc->lock); 1191255570Strasz cs->cs_ctl_initid = -1; 1192255570Strasz} 1193255570Strasz 1194255570Straszstatic struct cfiscsi_session * 1195255570Straszcfiscsi_session_new(struct cfiscsi_softc *softc) 1196255570Strasz{ 1197255570Strasz struct cfiscsi_session *cs; 1198255570Strasz int error; 1199255570Strasz 1200255570Strasz cs = malloc(sizeof(*cs), M_CFISCSI, M_NOWAIT | M_ZERO); 1201255570Strasz if (cs == NULL) { 1202255570Strasz CFISCSI_WARN("malloc failed"); 1203255570Strasz return (NULL); 1204255570Strasz } 1205255570Strasz cs->cs_ctl_initid = -1; 1206255570Strasz 1207255570Strasz refcount_init(&cs->cs_outstanding_ctl_pdus, 0); 1208255570Strasz TAILQ_INIT(&cs->cs_waiting_for_data_out); 1209255570Strasz mtx_init(&cs->cs_lock, "cfiscsi_lock", NULL, MTX_DEF); 1210255570Strasz cv_init(&cs->cs_maintenance_cv, "cfiscsi_mt"); 1211255570Strasz#ifdef ICL_KERNEL_PROXY 1212255570Strasz cv_init(&cs->cs_login_cv, "cfiscsi_login"); 1213255570Strasz#endif 1214255570Strasz 1215255570Strasz cs->cs_conn = icl_conn_new(); 1216255570Strasz cs->cs_conn->ic_receive = cfiscsi_receive_callback; 1217255570Strasz cs->cs_conn->ic_error = cfiscsi_error_callback; 1218255570Strasz cs->cs_conn->ic_prv0 = cs; 1219255570Strasz 1220255570Strasz error = kthread_add(cfiscsi_maintenance_thread, cs, NULL, NULL, 0, 0, "cfiscsimt"); 1221255570Strasz if (error != 0) { 1222255570Strasz CFISCSI_SESSION_WARN(cs, "kthread_add(9) failed with error %d", error); 1223255570Strasz free(cs, M_CFISCSI); 1224255570Strasz return (NULL); 1225255570Strasz } 1226255570Strasz 1227255570Strasz mtx_lock(&softc->lock); 1228255570Strasz cs->cs_id = softc->last_session_id + 1; 1229255570Strasz softc->last_session_id++; 1230255570Strasz mtx_unlock(&softc->lock); 1231255570Strasz 1232255570Strasz mtx_lock(&softc->lock); 1233255570Strasz TAILQ_INSERT_TAIL(&softc->sessions, cs, cs_next); 1234255570Strasz mtx_unlock(&softc->lock); 1235255570Strasz 1236255570Strasz /* 1237255570Strasz * Start pinging the initiator. 1238255570Strasz */ 1239255570Strasz callout_init(&cs->cs_callout, 1); 1240255570Strasz callout_reset(&cs->cs_callout, 1 * hz, cfiscsi_callout, cs); 1241255570Strasz 1242255570Strasz return (cs); 1243255570Strasz} 1244255570Strasz 1245255570Straszstatic void 1246255570Straszcfiscsi_session_delete(struct cfiscsi_session *cs) 1247255570Strasz{ 1248255570Strasz struct cfiscsi_softc *softc; 1249255570Strasz 1250255570Strasz softc = &cfiscsi_softc; 1251255570Strasz 1252255570Strasz KASSERT(cs->cs_outstanding_ctl_pdus == 0, 1253255570Strasz ("destroying session with outstanding CTL pdus")); 1254255570Strasz KASSERT(TAILQ_EMPTY(&cs->cs_waiting_for_data_out), 1255255570Strasz ("destroying session with non-empty queue")); 1256255570Strasz 1257255570Strasz cfiscsi_session_unregister_initiator(cs); 1258255570Strasz if (cs->cs_target != NULL) 1259255570Strasz cfiscsi_target_release(cs->cs_target); 1260255570Strasz icl_conn_close(cs->cs_conn); 1261255570Strasz icl_conn_free(cs->cs_conn); 1262255570Strasz 1263255570Strasz mtx_lock(&softc->lock); 1264255570Strasz TAILQ_REMOVE(&softc->sessions, cs, cs_next); 1265255570Strasz mtx_unlock(&softc->lock); 1266255570Strasz 1267255570Strasz free(cs, M_CFISCSI); 1268255570Strasz} 1269255570Strasz 1270255570Straszint 1271255570Straszcfiscsi_init(void) 1272255570Strasz{ 1273255570Strasz struct cfiscsi_softc *softc; 1274255570Strasz struct ctl_frontend *fe; 1275255570Strasz int retval; 1276255570Strasz 1277255570Strasz softc = &cfiscsi_softc; 1278255570Strasz retval = 0; 1279255570Strasz bzero(softc, sizeof(*softc)); 1280255570Strasz mtx_init(&softc->lock, "cfiscsi", NULL, MTX_DEF); 1281255570Strasz 1282255570Strasz#ifdef ICL_KERNEL_PROXY 1283255570Strasz cv_init(&softc->accept_cv, "cfiscsi_accept"); 1284255570Strasz#endif 1285255570Strasz TAILQ_INIT(&softc->sessions); 1286255570Strasz TAILQ_INIT(&softc->targets); 1287255570Strasz 1288255570Strasz fe = &softc->fe; 1289255570Strasz fe->port_type = CTL_PORT_ISCSI; 1290255570Strasz /* XXX KDM what should the real number be here? */ 1291255570Strasz fe->num_requested_ctl_io = 4096; 1292255570Strasz snprintf(softc->port_name, sizeof(softc->port_name), "iscsi"); 1293255570Strasz fe->port_name = softc->port_name; 1294255570Strasz fe->port_online = cfiscsi_online; 1295255570Strasz fe->port_offline = cfiscsi_offline; 1296255570Strasz fe->onoff_arg = softc; 1297255570Strasz fe->targ_enable = cfiscsi_targ_enable; 1298255570Strasz fe->targ_disable = cfiscsi_targ_disable; 1299255570Strasz fe->lun_enable = cfiscsi_lun_enable; 1300255570Strasz fe->lun_disable = cfiscsi_lun_disable; 1301255570Strasz fe->targ_lun_arg = softc; 1302255570Strasz fe->ioctl = cfiscsi_ioctl; 1303255570Strasz fe->devid = cfiscsi_devid; 1304255570Strasz fe->fe_datamove = cfiscsi_datamove; 1305255570Strasz fe->fe_done = cfiscsi_done; 1306255570Strasz 1307255570Strasz /* XXX KDM what should we report here? */ 1308255570Strasz /* XXX These should probably be fetched from CTL. */ 1309255570Strasz fe->max_targets = 1; 1310255570Strasz fe->max_target_id = 15; 1311255570Strasz 1312255570Strasz retval = ctl_frontend_register(fe, /*master_SC*/ 1); 1313255570Strasz if (retval != 0) { 1314255570Strasz CFISCSI_WARN("ctl_frontend_register() failed with error %d", 1315255570Strasz retval); 1316255570Strasz retval = 1; 1317255570Strasz goto bailout; 1318255570Strasz } 1319255570Strasz 1320255570Strasz softc->max_initiators = fe->max_initiators; 1321255570Strasz 1322255570Strasz cfiscsi_data_wait_zone = uma_zcreate("cfiscsi_data_wait", 1323255570Strasz sizeof(struct cfiscsi_data_wait), NULL, NULL, NULL, NULL, 1324256058Strasz UMA_ALIGN_PTR, 0); 1325255570Strasz 1326255570Strasz return (0); 1327255570Strasz 1328255570Straszbailout: 1329255570Strasz return (retval); 1330255570Strasz} 1331255570Strasz 1332255570Straszstatic int 1333255570Straszcfiscsi_module_event_handler(module_t mod, int what, void *arg) 1334255570Strasz{ 1335255570Strasz 1336255570Strasz switch (what) { 1337255570Strasz case MOD_LOAD: 1338255570Strasz return (cfiscsi_init()); 1339255570Strasz case MOD_UNLOAD: 1340255570Strasz return (EBUSY); 1341255570Strasz default: 1342255570Strasz return (EOPNOTSUPP); 1343255570Strasz } 1344255570Strasz} 1345255570Strasz 1346255570Strasz#ifdef ICL_KERNEL_PROXY 1347255570Straszstatic void 1348255570Straszcfiscsi_accept(struct socket *so) 1349255570Strasz{ 1350255570Strasz struct cfiscsi_session *cs; 1351255570Strasz 1352255570Strasz cs = cfiscsi_session_new(&cfiscsi_softc); 1353255570Strasz if (cs == NULL) { 1354255570Strasz CFISCSI_WARN("failed to create session"); 1355255570Strasz return; 1356255570Strasz } 1357255570Strasz 1358255570Strasz icl_conn_handoff_sock(cs->cs_conn, so); 1359255570Strasz cs->cs_waiting_for_ctld = true; 1360255570Strasz cv_signal(&cfiscsi_softc.accept_cv); 1361255570Strasz} 1362255570Strasz#endif 1363255570Strasz 1364255570Straszstatic void 1365255570Straszcfiscsi_online(void *arg) 1366255570Strasz{ 1367255570Strasz struct cfiscsi_softc *softc; 1368255570Strasz 1369255570Strasz softc = (struct cfiscsi_softc *)arg; 1370255570Strasz 1371255570Strasz softc->online = 1; 1372255570Strasz#ifdef ICL_KERNEL_PROXY 1373255570Strasz if (softc->listener != NULL) 1374255570Strasz icl_listen_free(softc->listener); 1375255570Strasz softc->listener = icl_listen_new(cfiscsi_accept); 1376255570Strasz#endif 1377255570Strasz} 1378255570Strasz 1379255570Straszstatic void 1380255570Straszcfiscsi_offline(void *arg) 1381255570Strasz{ 1382255570Strasz struct cfiscsi_softc *softc; 1383255570Strasz struct cfiscsi_session *cs; 1384255570Strasz 1385255570Strasz softc = (struct cfiscsi_softc *)arg; 1386255570Strasz 1387255570Strasz softc->online = 0; 1388255570Strasz 1389255570Strasz mtx_lock(&softc->lock); 1390255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) 1391255570Strasz cfiscsi_session_terminate(cs); 1392255570Strasz mtx_unlock(&softc->lock); 1393255570Strasz 1394255570Strasz#ifdef ICL_KERNEL_PROXY 1395255570Strasz icl_listen_free(softc->listener); 1396255570Strasz softc->listener = NULL; 1397255570Strasz#endif 1398255570Strasz} 1399255570Strasz 1400255570Straszstatic int 1401255570Straszcfiscsi_targ_enable(void *arg, struct ctl_id targ_id) 1402255570Strasz{ 1403255570Strasz 1404255570Strasz return (0); 1405255570Strasz} 1406255570Strasz 1407255570Straszstatic int 1408255570Straszcfiscsi_targ_disable(void *arg, struct ctl_id targ_id) 1409255570Strasz{ 1410255570Strasz 1411255570Strasz return (0); 1412255570Strasz} 1413255570Strasz 1414255570Straszstatic void 1415255570Straszcfiscsi_ioctl_handoff(struct ctl_iscsi *ci) 1416255570Strasz{ 1417255570Strasz struct cfiscsi_softc *softc; 1418255570Strasz struct cfiscsi_session *cs; 1419255570Strasz struct cfiscsi_target *ct; 1420255570Strasz struct ctl_iscsi_handoff_params *cihp; 1421255570Strasz#ifndef ICL_KERNEL_PROXY 1422255570Strasz int error; 1423255570Strasz#endif 1424255570Strasz 1425255570Strasz cihp = (struct ctl_iscsi_handoff_params *)&(ci->data); 1426255570Strasz softc = &cfiscsi_softc; 1427255570Strasz 1428255570Strasz CFISCSI_DEBUG("new connection from %s (%s) to %s", 1429255570Strasz cihp->initiator_name, cihp->initiator_addr, 1430255570Strasz cihp->target_name); 1431255570Strasz 1432255570Strasz if (softc->online == 0) { 1433255570Strasz ci->status = CTL_ISCSI_ERROR; 1434255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1435255570Strasz "%s: port offline", __func__); 1436255570Strasz return; 1437255570Strasz } 1438255570Strasz 1439255570Strasz ct = cfiscsi_target_find(softc, cihp->target_name); 1440255570Strasz if (ct == NULL) { 1441255570Strasz ci->status = CTL_ISCSI_ERROR; 1442255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1443255570Strasz "%s: target not found", __func__); 1444255570Strasz return; 1445255570Strasz } 1446255570Strasz 1447255570Strasz#ifdef ICL_KERNEL_PROXY 1448255570Strasz mtx_lock(&cfiscsi_softc.lock); 1449255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1450255570Strasz if (cs->cs_id == cihp->socket) 1451255570Strasz break; 1452255570Strasz } 1453255570Strasz if (cs == NULL) { 1454255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1455255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1456255570Strasz ci->status = CTL_ISCSI_ERROR; 1457255570Strasz return; 1458255570Strasz } 1459255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1460255570Strasz#else 1461255570Strasz cs = cfiscsi_session_new(softc); 1462255570Strasz if (cs == NULL) { 1463255570Strasz ci->status = CTL_ISCSI_ERROR; 1464255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1465255570Strasz "%s: cfiscsi_session_new failed", __func__); 1466255570Strasz cfiscsi_target_release(ct); 1467255570Strasz return; 1468255570Strasz } 1469255570Strasz#endif 1470255570Strasz cs->cs_target = ct; 1471255570Strasz 1472255570Strasz /* 1473255570Strasz * First PDU of Full Feature phase has the same CmdSN as the last 1474255570Strasz * PDU from the Login Phase received from the initiator. Thus, 1475255570Strasz * the -1 below. 1476255570Strasz */ 1477255570Strasz cs->cs_portal_group_tag = cihp->portal_group_tag; 1478255570Strasz cs->cs_cmdsn = cihp->cmdsn; 1479255570Strasz cs->cs_statsn = cihp->statsn; 1480255570Strasz cs->cs_max_data_segment_length = cihp->max_recv_data_segment_length; 1481255570Strasz cs->cs_max_burst_length = cihp->max_burst_length; 1482255570Strasz cs->cs_immediate_data = !!cihp->immediate_data; 1483255570Strasz if (cihp->header_digest == CTL_ISCSI_DIGEST_CRC32C) 1484255570Strasz cs->cs_conn->ic_header_crc32c = true; 1485255570Strasz if (cihp->data_digest == CTL_ISCSI_DIGEST_CRC32C) 1486255570Strasz cs->cs_conn->ic_data_crc32c = true; 1487255570Strasz 1488255570Strasz strlcpy(cs->cs_initiator_name, 1489255570Strasz cihp->initiator_name, sizeof(cs->cs_initiator_name)); 1490255570Strasz strlcpy(cs->cs_initiator_addr, 1491255570Strasz cihp->initiator_addr, sizeof(cs->cs_initiator_addr)); 1492255570Strasz strlcpy(cs->cs_initiator_alias, 1493255570Strasz cihp->initiator_alias, sizeof(cs->cs_initiator_alias)); 1494255570Strasz 1495255570Strasz#ifdef ICL_KERNEL_PROXY 1496255570Strasz cs->cs_login_phase = false; 1497255570Strasz#else 1498255570Strasz error = icl_conn_handoff(cs->cs_conn, cihp->socket); 1499255570Strasz if (error != 0) { 1500255570Strasz cfiscsi_session_delete(cs); 1501255570Strasz ci->status = CTL_ISCSI_ERROR; 1502255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1503255570Strasz "%s: icl_conn_handoff failed with error %d", 1504255570Strasz __func__, error); 1505255570Strasz return; 1506255570Strasz } 1507255570Strasz#endif 1508255570Strasz 1509255570Strasz /* 1510255570Strasz * Register initiator with CTL. 1511255570Strasz */ 1512255570Strasz cfiscsi_session_register_initiator(cs); 1513255570Strasz 1514255570Strasz#ifdef ICL_KERNEL_PROXY 1515255570Strasz /* 1516255570Strasz * First PDU of the Full Feature phase has likely already arrived. 1517255570Strasz * We have to pick it up and execute properly. 1518255570Strasz */ 1519255570Strasz if (cs->cs_login_pdu != NULL) { 1520255570Strasz CFISCSI_SESSION_DEBUG(cs, "picking up first PDU"); 1521255570Strasz cfiscsi_pdu_handle(cs->cs_login_pdu); 1522255570Strasz cs->cs_login_pdu = NULL; 1523255570Strasz } 1524255570Strasz#endif 1525255570Strasz 1526255570Strasz ci->status = CTL_ISCSI_OK; 1527255570Strasz} 1528255570Strasz 1529255570Straszstatic void 1530255570Straszcfiscsi_ioctl_list(struct ctl_iscsi *ci) 1531255570Strasz{ 1532255570Strasz struct ctl_iscsi_list_params *cilp; 1533255570Strasz struct cfiscsi_session *cs; 1534255570Strasz struct cfiscsi_softc *softc; 1535255570Strasz struct sbuf *sb; 1536255570Strasz int error; 1537255570Strasz 1538255570Strasz cilp = (struct ctl_iscsi_list_params *)&(ci->data); 1539255570Strasz softc = &cfiscsi_softc; 1540255570Strasz 1541255570Strasz sb = sbuf_new(NULL, NULL, cilp->alloc_len, SBUF_FIXEDLEN); 1542255570Strasz if (sb == NULL) { 1543255570Strasz ci->status = CTL_ISCSI_ERROR; 1544255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1545255570Strasz "Unable to allocate %d bytes for iSCSI session list", 1546255570Strasz cilp->alloc_len); 1547255570Strasz return; 1548255570Strasz } 1549255570Strasz 1550255570Strasz sbuf_printf(sb, "<ctlislist>\n"); 1551255570Strasz mtx_lock(&softc->lock); 1552255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1553255570Strasz#ifdef ICL_KERNEL_PROXY 1554255570Strasz if (cs->cs_target == NULL) 1555255570Strasz continue; 1556255570Strasz#endif 1557255570Strasz error = sbuf_printf(sb, "<connection id=\"%d\">" 1558255570Strasz "<initiator>%s</initiator>" 1559255570Strasz "<initiator_addr>%s</initiator_addr>" 1560255570Strasz "<initiator_alias>%s</initiator_alias>" 1561255570Strasz "<target>%s</target>" 1562255570Strasz "<target_alias>%s</target_alias>" 1563255570Strasz "<header_digest>%s</header_digest>" 1564255570Strasz "<data_digest>%s</data_digest>" 1565255570Strasz "<max_data_segment_length>%zd</max_data_segment_length>" 1566255570Strasz "<immediate_data>%d</immediate_data>" 1567255570Strasz "<iser>%d</iser>" 1568255570Strasz "</connection>\n", 1569255570Strasz cs->cs_id, 1570255570Strasz cs->cs_initiator_name, cs->cs_initiator_addr, cs->cs_initiator_alias, 1571255570Strasz cs->cs_target->ct_name, cs->cs_target->ct_alias, 1572255570Strasz cs->cs_conn->ic_header_crc32c ? "CRC32C" : "None", 1573255570Strasz cs->cs_conn->ic_data_crc32c ? "CRC32C" : "None", 1574255570Strasz cs->cs_max_data_segment_length, 1575255570Strasz cs->cs_immediate_data, 1576255570Strasz cs->cs_conn->ic_iser); 1577255570Strasz if (error != 0) 1578255570Strasz break; 1579255570Strasz } 1580255570Strasz mtx_unlock(&softc->lock); 1581255570Strasz error = sbuf_printf(sb, "</ctlislist>\n"); 1582255570Strasz if (error != 0) { 1583255570Strasz sbuf_delete(sb); 1584255570Strasz ci->status = CTL_ISCSI_LIST_NEED_MORE_SPACE; 1585255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1586255570Strasz "Out of space, %d bytes is too small", cilp->alloc_len); 1587255570Strasz return; 1588255570Strasz } 1589255570Strasz sbuf_finish(sb); 1590255570Strasz 1591255570Strasz error = copyout(sbuf_data(sb), cilp->conn_xml, sbuf_len(sb) + 1); 1592255570Strasz cilp->fill_len = sbuf_len(sb) + 1; 1593255570Strasz ci->status = CTL_ISCSI_OK; 1594255570Strasz sbuf_delete(sb); 1595255570Strasz} 1596255570Strasz 1597255570Straszstatic void 1598255570Straszcfiscsi_ioctl_terminate(struct ctl_iscsi *ci) 1599255570Strasz{ 1600255570Strasz struct icl_pdu *response; 1601255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1602255570Strasz struct ctl_iscsi_terminate_params *citp; 1603255570Strasz struct cfiscsi_session *cs; 1604255570Strasz struct cfiscsi_softc *softc; 1605255570Strasz int found = 0; 1606255570Strasz 1607255570Strasz citp = (struct ctl_iscsi_terminate_params *)&(ci->data); 1608255570Strasz softc = &cfiscsi_softc; 1609255570Strasz 1610255570Strasz mtx_lock(&softc->lock); 1611255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1612255570Strasz if (citp->all == 0 && cs->cs_id != citp->connection_id && 1613255570Strasz strcmp(cs->cs_initiator_name, citp->initiator_name) != 0 && 1614255570Strasz strcmp(cs->cs_initiator_addr, citp->initiator_addr) != 0) 1615255570Strasz continue; 1616255570Strasz 1617255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1618255570Strasz if (response == NULL) { 1619255570Strasz /* 1620255570Strasz * Oh well. Just terminate the connection. 1621255570Strasz */ 1622255570Strasz } else { 1623255570Strasz bhsam = (struct iscsi_bhs_asynchronous_message *) 1624255570Strasz response->ip_bhs; 1625255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1626255570Strasz bhsam->bhsam_flags = 0x80; 1627255570Strasz bhsam->bhsam_0xffffffff = 0xffffffff; 1628255570Strasz bhsam->bhsam_async_event = 1629255570Strasz BHSAM_EVENT_TARGET_TERMINATES_SESSION; 1630255570Strasz cfiscsi_pdu_queue(response); 1631255570Strasz } 1632255570Strasz cfiscsi_session_terminate(cs); 1633255570Strasz found++; 1634255570Strasz } 1635255570Strasz mtx_unlock(&softc->lock); 1636255570Strasz 1637255570Strasz if (found == 0) { 1638255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1639255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1640255570Strasz "No matching connections found"); 1641255570Strasz return; 1642255570Strasz } 1643255570Strasz 1644255570Strasz ci->status = CTL_ISCSI_OK; 1645255570Strasz} 1646255570Strasz 1647255570Straszstatic void 1648255570Straszcfiscsi_ioctl_logout(struct ctl_iscsi *ci) 1649255570Strasz{ 1650255570Strasz struct icl_pdu *response; 1651255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1652255570Strasz struct ctl_iscsi_logout_params *cilp; 1653255570Strasz struct cfiscsi_session *cs; 1654255570Strasz struct cfiscsi_softc *softc; 1655255570Strasz int found = 0; 1656255570Strasz 1657255570Strasz cilp = (struct ctl_iscsi_logout_params *)&(ci->data); 1658255570Strasz softc = &cfiscsi_softc; 1659255570Strasz 1660255570Strasz mtx_lock(&softc->lock); 1661255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1662255570Strasz if (cilp->all == 0 && cs->cs_id != cilp->connection_id && 1663255570Strasz strcmp(cs->cs_initiator_name, cilp->initiator_name) != 0 && 1664255570Strasz strcmp(cs->cs_initiator_addr, cilp->initiator_addr) != 0) 1665255570Strasz continue; 1666255570Strasz 1667255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1668255570Strasz if (response == NULL) { 1669255570Strasz ci->status = CTL_ISCSI_ERROR; 1670255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1671255570Strasz "Unable to allocate memory"); 1672255570Strasz mtx_unlock(&softc->lock); 1673255570Strasz return; 1674255570Strasz } 1675255570Strasz bhsam = 1676255570Strasz (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1677255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1678255570Strasz bhsam->bhsam_flags = 0x80; 1679255570Strasz bhsam->bhsam_async_event = BHSAM_EVENT_TARGET_REQUESTS_LOGOUT; 1680255570Strasz bhsam->bhsam_parameter3 = htons(10); 1681255570Strasz cfiscsi_pdu_queue(response); 1682255570Strasz found++; 1683255570Strasz } 1684255570Strasz mtx_unlock(&softc->lock); 1685255570Strasz 1686255570Strasz if (found == 0) { 1687255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1688255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1689255570Strasz "No matching connections found"); 1690255570Strasz return; 1691255570Strasz } 1692255570Strasz 1693255570Strasz ci->status = CTL_ISCSI_OK; 1694255570Strasz} 1695255570Strasz 1696255570Strasz#ifdef ICL_KERNEL_PROXY 1697255570Straszstatic void 1698255570Straszcfiscsi_ioctl_listen(struct ctl_iscsi *ci) 1699255570Strasz{ 1700255570Strasz struct ctl_iscsi_listen_params *cilp; 1701255570Strasz struct sockaddr *sa; 1702255570Strasz int error; 1703255570Strasz 1704255570Strasz cilp = (struct ctl_iscsi_listen_params *)&(ci->data); 1705255570Strasz 1706255570Strasz if (cfiscsi_softc.listener == NULL) { 1707255570Strasz CFISCSI_DEBUG("no listener"); 1708255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "no listener"); 1709255570Strasz ci->status = CTL_ISCSI_ERROR; 1710255570Strasz return; 1711255570Strasz } 1712255570Strasz 1713255570Strasz error = getsockaddr(&sa, (void *)cilp->addr, cilp->addrlen); 1714255570Strasz if (error != 0) { 1715255570Strasz CFISCSI_DEBUG("getsockaddr, error %d", error); 1716255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "getsockaddr failed"); 1717255570Strasz ci->status = CTL_ISCSI_ERROR; 1718255570Strasz return; 1719255570Strasz } 1720255570Strasz 1721255570Strasz error = icl_listen_add(cfiscsi_softc.listener, cilp->iser, cilp->domain, 1722255570Strasz cilp->socktype, cilp->protocol, sa); 1723255570Strasz if (error != 0) { 1724255570Strasz free(sa, M_SONAME); 1725255570Strasz CFISCSI_DEBUG("icl_listen_add, error %d", error); 1726255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1727255570Strasz "icl_listen_add failed, error %d", error); 1728255570Strasz ci->status = CTL_ISCSI_ERROR; 1729255570Strasz return; 1730255570Strasz } 1731255570Strasz 1732255570Strasz ci->status = CTL_ISCSI_OK; 1733255570Strasz} 1734255570Strasz 1735255570Straszstatic void 1736255570Straszcfiscsi_ioctl_accept(struct ctl_iscsi *ci) 1737255570Strasz{ 1738255570Strasz struct ctl_iscsi_accept_params *ciap; 1739255570Strasz struct cfiscsi_session *cs; 1740255570Strasz int error; 1741255570Strasz 1742255570Strasz ciap = (struct ctl_iscsi_accept_params *)&(ci->data); 1743255570Strasz 1744255570Strasz mtx_lock(&cfiscsi_softc.lock); 1745255570Strasz for (;;) { 1746255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1747255570Strasz if (cs->cs_waiting_for_ctld) 1748255570Strasz break; 1749255570Strasz } 1750255570Strasz if (cs != NULL) 1751255570Strasz break; 1752255570Strasz error = cv_wait_sig(&cfiscsi_softc.accept_cv, &cfiscsi_softc.lock); 1753255570Strasz if (error != 0) { 1754255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1755255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "interrupted"); 1756255570Strasz ci->status = CTL_ISCSI_ERROR; 1757255570Strasz return; 1758255570Strasz } 1759255570Strasz } 1760255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1761255570Strasz 1762255570Strasz cs->cs_waiting_for_ctld = false; 1763255570Strasz cs->cs_login_phase = true; 1764255570Strasz 1765255570Strasz ciap->connection_id = cs->cs_id; 1766255570Strasz ci->status = CTL_ISCSI_OK; 1767255570Strasz} 1768255570Strasz 1769255570Straszstatic void 1770255570Straszcfiscsi_ioctl_send(struct ctl_iscsi *ci) 1771255570Strasz{ 1772255570Strasz struct ctl_iscsi_send_params *cisp; 1773255570Strasz struct cfiscsi_session *cs; 1774255570Strasz struct icl_pdu *ip; 1775255570Strasz size_t datalen; 1776255570Strasz void *data; 1777255570Strasz int error; 1778255570Strasz 1779255570Strasz cisp = (struct ctl_iscsi_send_params *)&(ci->data); 1780255570Strasz 1781255570Strasz mtx_lock(&cfiscsi_softc.lock); 1782255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1783255570Strasz if (cs->cs_id == cisp->connection_id) 1784255570Strasz break; 1785255570Strasz } 1786255570Strasz if (cs == NULL) { 1787255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1788255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1789255570Strasz ci->status = CTL_ISCSI_ERROR; 1790255570Strasz return; 1791255570Strasz } 1792255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1793255570Strasz 1794255570Strasz#if 0 1795255570Strasz if (cs->cs_login_phase == false) 1796255570Strasz return (EBUSY); 1797255570Strasz#endif 1798255570Strasz 1799255570Strasz if (cs->cs_terminating) { 1800255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection is terminating"); 1801255570Strasz ci->status = CTL_ISCSI_ERROR; 1802255570Strasz return; 1803255570Strasz } 1804255570Strasz 1805255570Strasz datalen = cisp->data_segment_len; 1806255570Strasz /* 1807255570Strasz * XXX 1808255570Strasz */ 1809255570Strasz //if (datalen > CFISCSI_MAX_DATA_SEGMENT_LENGTH) { 1810255570Strasz if (datalen > 65535) { 1811255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1812255570Strasz ci->status = CTL_ISCSI_ERROR; 1813255570Strasz return; 1814255570Strasz } 1815255570Strasz if (datalen > 0) { 1816255570Strasz data = malloc(datalen, M_CFISCSI, M_WAITOK); 1817255570Strasz error = copyin(cisp->data_segment, data, datalen); 1818255570Strasz if (error != 0) { 1819255570Strasz free(data, M_CFISCSI); 1820255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "copyin error %d", error); 1821255570Strasz ci->status = CTL_ISCSI_ERROR; 1822255570Strasz return; 1823255570Strasz } 1824255570Strasz } 1825255570Strasz 1826255570Strasz ip = icl_pdu_new_bhs(cs->cs_conn, M_WAITOK); 1827255570Strasz memcpy(ip->ip_bhs, cisp->bhs, sizeof(*ip->ip_bhs)); 1828255570Strasz if (datalen > 0) { 1829255570Strasz icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1830255570Strasz free(data, M_CFISCSI); 1831255570Strasz } 1832255570Strasz icl_pdu_queue(ip); 1833255570Strasz ci->status = CTL_ISCSI_OK; 1834255570Strasz} 1835255570Strasz 1836255570Straszstatic void 1837255570Straszcfiscsi_ioctl_receive(struct ctl_iscsi *ci) 1838255570Strasz{ 1839255570Strasz struct ctl_iscsi_receive_params *cirp; 1840255570Strasz struct cfiscsi_session *cs; 1841255570Strasz struct icl_pdu *ip; 1842255570Strasz void *data; 1843255570Strasz 1844255570Strasz cirp = (struct ctl_iscsi_receive_params *)&(ci->data); 1845255570Strasz 1846255570Strasz mtx_lock(&cfiscsi_softc.lock); 1847255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1848255570Strasz if (cs->cs_id == cirp->connection_id) 1849255570Strasz break; 1850255570Strasz } 1851255570Strasz if (cs == NULL) { 1852255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1853255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1854255570Strasz ci->status = CTL_ISCSI_ERROR; 1855255570Strasz return; 1856255570Strasz } 1857255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1858255570Strasz 1859255570Strasz#if 0 1860255570Strasz if (is->is_login_phase == false) 1861255570Strasz return (EBUSY); 1862255570Strasz#endif 1863255570Strasz 1864255570Strasz CFISCSI_SESSION_LOCK(cs); 1865255570Strasz while (cs->cs_login_pdu == NULL && 1866255570Strasz cs->cs_terminating == false) 1867255570Strasz cv_wait(&cs->cs_login_cv, &cs->cs_lock); 1868255570Strasz if (cs->cs_terminating) { 1869255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1870255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection terminating"); 1871255570Strasz ci->status = CTL_ISCSI_ERROR; 1872255570Strasz return; 1873255570Strasz } 1874255570Strasz ip = cs->cs_login_pdu; 1875255570Strasz cs->cs_login_pdu = NULL; 1876255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1877255570Strasz 1878255570Strasz if (ip->ip_data_len > cirp->data_segment_len) { 1879255570Strasz icl_pdu_free(ip); 1880255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1881255570Strasz ci->status = CTL_ISCSI_ERROR; 1882255570Strasz return; 1883255570Strasz } 1884255570Strasz 1885255570Strasz copyout(ip->ip_bhs, cirp->bhs, sizeof(*ip->ip_bhs)); 1886255570Strasz if (ip->ip_data_len > 0) { 1887255570Strasz data = malloc(ip->ip_data_len, M_CFISCSI, M_WAITOK); 1888255570Strasz icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1889255570Strasz copyout(data, cirp->data_segment, ip->ip_data_len); 1890255570Strasz free(data, M_CFISCSI); 1891255570Strasz } 1892255570Strasz 1893255570Strasz icl_pdu_free(ip); 1894255570Strasz ci->status = CTL_ISCSI_OK; 1895255570Strasz} 1896255570Strasz 1897255570Straszstatic void 1898255570Straszcfiscsi_ioctl_close(struct ctl_iscsi *ci) 1899255570Strasz{ 1900255570Strasz /* 1901255570Strasz * XXX 1902255570Strasz */ 1903255570Strasz} 1904255570Strasz#endif /* !ICL_KERNEL_PROXY */ 1905255570Strasz 1906255570Straszstatic int 1907255570Straszcfiscsi_ioctl(struct cdev *dev, 1908255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td) 1909255570Strasz{ 1910255570Strasz struct ctl_iscsi *ci; 1911255570Strasz 1912255570Strasz if (cmd != CTL_ISCSI) 1913255570Strasz return (ENOTTY); 1914255570Strasz 1915255570Strasz ci = (struct ctl_iscsi *)addr; 1916255570Strasz switch (ci->type) { 1917255570Strasz case CTL_ISCSI_HANDOFF: 1918255570Strasz cfiscsi_ioctl_handoff(ci); 1919255570Strasz break; 1920255570Strasz case CTL_ISCSI_LIST: 1921255570Strasz cfiscsi_ioctl_list(ci); 1922255570Strasz break; 1923255570Strasz case CTL_ISCSI_TERMINATE: 1924255570Strasz cfiscsi_ioctl_terminate(ci); 1925255570Strasz break; 1926255570Strasz case CTL_ISCSI_LOGOUT: 1927255570Strasz cfiscsi_ioctl_logout(ci); 1928255570Strasz break; 1929255570Strasz#ifdef ICL_KERNEL_PROXY 1930255570Strasz case CTL_ISCSI_LISTEN: 1931255570Strasz cfiscsi_ioctl_listen(ci); 1932255570Strasz break; 1933255570Strasz case CTL_ISCSI_ACCEPT: 1934255570Strasz cfiscsi_ioctl_accept(ci); 1935255570Strasz break; 1936255570Strasz case CTL_ISCSI_SEND: 1937255570Strasz cfiscsi_ioctl_send(ci); 1938255570Strasz break; 1939255570Strasz case CTL_ISCSI_RECEIVE: 1940255570Strasz cfiscsi_ioctl_receive(ci); 1941255570Strasz break; 1942255570Strasz case CTL_ISCSI_CLOSE: 1943255570Strasz cfiscsi_ioctl_close(ci); 1944255570Strasz break; 1945255570Strasz#endif /* ICL_KERNEL_PROXY */ 1946255570Strasz default: 1947255570Strasz ci->status = CTL_ISCSI_ERROR; 1948255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1949255570Strasz "%s: invalid iSCSI request type %d", __func__, ci->type); 1950255570Strasz break; 1951255570Strasz } 1952255570Strasz 1953255570Strasz return (0); 1954255570Strasz} 1955255570Strasz 1956255570Straszstatic int 1957255570Straszcfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len) 1958255570Strasz{ 1959255570Strasz struct cfiscsi_session *cs; 1960255570Strasz struct scsi_vpd_device_id *devid_ptr; 1961255570Strasz struct scsi_vpd_id_descriptor *desc, *desc1; 1962255570Strasz struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 1963255570Strasz struct scsi_vpd_id_t10 *t10id; 1964255570Strasz struct ctl_lun *lun; 1965255570Strasz const struct icl_pdu *request; 1966255570Strasz size_t devid_len, wwpn_len; 1967255570Strasz 1968255570Strasz lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 1969255570Strasz request = ctsio->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1970255570Strasz cs = PDU_SESSION(request); 1971255570Strasz 1972255570Strasz wwpn_len = strlen(cs->cs_target->ct_name); 1973255570Strasz wwpn_len += strlen(",t,0x01"); 1974255570Strasz wwpn_len += 1; /* '\0' */ 1975255570Strasz if ((wwpn_len % 4) != 0) 1976255570Strasz wwpn_len += (4 - (wwpn_len % 4)); 1977255570Strasz 1978255570Strasz devid_len = sizeof(struct scsi_vpd_device_id) + 1979255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 1980255570Strasz sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 1981255570Strasz sizeof(struct scsi_vpd_id_descriptor) + wwpn_len + 1982255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 1983255570Strasz sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 1984255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 1985255570Strasz sizeof(struct scsi_vpd_id_trgt_port_grp_id); 1986255570Strasz 1987255570Strasz ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO); 1988255570Strasz devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 1989255570Strasz ctsio->kern_sg_entries = 0; 1990255570Strasz 1991255570Strasz if (devid_len < alloc_len) { 1992255570Strasz ctsio->residual = alloc_len - devid_len; 1993255570Strasz ctsio->kern_data_len = devid_len; 1994255570Strasz ctsio->kern_total_len = devid_len; 1995255570Strasz } else { 1996255570Strasz ctsio->residual = 0; 1997255570Strasz ctsio->kern_data_len = alloc_len; 1998255570Strasz ctsio->kern_total_len = alloc_len; 1999255570Strasz } 2000255570Strasz ctsio->kern_data_resid = 0; 2001255570Strasz ctsio->kern_rel_offset = 0; 2002255570Strasz ctsio->kern_sg_entries = 0; 2003255570Strasz 2004255570Strasz desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 2005255570Strasz t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 2006255570Strasz desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 2007255570Strasz sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 2008255570Strasz desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 2009255570Strasz wwpn_len); 2010255570Strasz desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 2011255570Strasz sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 2012255570Strasz 2013255570Strasz if (lun != NULL) 2014255570Strasz devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 2015255570Strasz lun->be_lun->lun_type; 2016255570Strasz else 2017255570Strasz devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 2018255570Strasz 2019255570Strasz devid_ptr->page_code = SVPD_DEVICE_ID; 2020255570Strasz 2021255570Strasz scsi_ulto2b(devid_len - 4, devid_ptr->length); 2022255570Strasz 2023255570Strasz /* 2024255570Strasz * We're using a LUN association here. i.e., this device ID is a 2025255570Strasz * per-LUN identifier. 2026255570Strasz */ 2027255570Strasz desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_ASCII; 2028255570Strasz desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 2029255570Strasz desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 2030255570Strasz strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 2031255570Strasz 2032255570Strasz /* 2033255570Strasz * If we've actually got a backend, copy the device id from the 2034255570Strasz * per-LUN data. Otherwise, set it to all spaces. 2035255570Strasz */ 2036255570Strasz if (lun != NULL) { 2037255570Strasz /* 2038255570Strasz * Copy the backend's LUN ID. 2039255570Strasz */ 2040255570Strasz strncpy((char *)t10id->vendor_spec_id, 2041255570Strasz (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 2042255570Strasz } else { 2043255570Strasz /* 2044255570Strasz * No backend, set this to spaces. 2045255570Strasz */ 2046255570Strasz memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 2047255570Strasz } 2048255570Strasz 2049255570Strasz /* 2050255570Strasz * desc1 is for the WWPN which is a port asscociation. 2051255570Strasz */ 2052255570Strasz desc1->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2053255570Strasz desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2054255570Strasz SVPD_ID_TYPE_SCSI_NAME; 2055255570Strasz desc1->length = wwpn_len; 2056255570Strasz snprintf(desc1->identifier, wwpn_len, "%s,t,0x%x", 2057255570Strasz cs->cs_target->ct_name, cs->cs_portal_group_tag); 2058255570Strasz 2059255570Strasz /* 2060255570Strasz * desc2 is for the Relative Target Port(type 4h) identifier 2061255570Strasz */ 2062255570Strasz desc2->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY; 2063255570Strasz desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2064255570Strasz SVPD_ID_TYPE_RELTARG; 2065255570Strasz desc2->length = 4; 2066255570Strasz desc2->identifier[3] = 1; 2067255570Strasz 2068255570Strasz /* 2069255570Strasz * desc3 is for the Target Port Group(type 5h) identifier 2070255570Strasz */ 2071255570Strasz desc3->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY; 2072255570Strasz desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2073255570Strasz SVPD_ID_TYPE_TPORTGRP; 2074255570Strasz desc3->length = 4; 2075255570Strasz desc3->identifier[3] = 1; 2076255570Strasz 2077255570Strasz ctsio->scsi_status = SCSI_STATUS_OK; 2078255570Strasz 2079255570Strasz ctsio->be_move_done = ctl_config_move_done; 2080255570Strasz ctl_datamove((union ctl_io *)ctsio); 2081255570Strasz 2082255570Strasz return (CTL_RETVAL_COMPLETE); 2083255570Strasz} 2084255570Strasz 2085255570Straszstatic void 2086255570Straszcfiscsi_target_hold(struct cfiscsi_target *ct) 2087255570Strasz{ 2088255570Strasz 2089255570Strasz refcount_acquire(&ct->ct_refcount); 2090255570Strasz} 2091255570Strasz 2092255570Straszstatic void 2093255570Straszcfiscsi_target_release(struct cfiscsi_target *ct) 2094255570Strasz{ 2095255570Strasz int old; 2096255570Strasz struct cfiscsi_softc *softc; 2097255570Strasz 2098255570Strasz softc = ct->ct_softc; 2099255570Strasz 2100255570Strasz old = ct->ct_refcount; 2101255570Strasz if (old > 1 && atomic_cmpset_int(&ct->ct_refcount, old, old - 1)) 2102255570Strasz return; 2103255570Strasz 2104255570Strasz mtx_lock(&softc->lock); 2105255570Strasz if (refcount_release(&ct->ct_refcount)) { 2106255570Strasz TAILQ_REMOVE(&softc->targets, ct, ct_next); 2107255570Strasz mtx_unlock(&softc->lock); 2108255570Strasz free(ct, M_CFISCSI); 2109255570Strasz 2110255570Strasz return; 2111255570Strasz } 2112255570Strasz mtx_unlock(&softc->lock); 2113255570Strasz} 2114255570Strasz 2115255570Straszstatic struct cfiscsi_target * 2116255570Straszcfiscsi_target_find(struct cfiscsi_softc *softc, const char *name) 2117255570Strasz{ 2118255570Strasz struct cfiscsi_target *ct; 2119255570Strasz 2120255570Strasz mtx_lock(&softc->lock); 2121255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2122255570Strasz if (strcmp(name, ct->ct_name) != 0) 2123255570Strasz continue; 2124255570Strasz cfiscsi_target_hold(ct); 2125255570Strasz mtx_unlock(&softc->lock); 2126255570Strasz return (ct); 2127255570Strasz } 2128255570Strasz mtx_unlock(&softc->lock); 2129255570Strasz 2130255570Strasz return (NULL); 2131255570Strasz} 2132255570Strasz 2133255570Straszstatic struct cfiscsi_target * 2134255570Straszcfiscsi_target_find_or_create(struct cfiscsi_softc *softc, const char *name, 2135255570Strasz const char *alias) 2136255570Strasz{ 2137255570Strasz struct cfiscsi_target *ct, *newct; 2138255570Strasz int i; 2139255570Strasz 2140255570Strasz if (name[0] == '\0' || strlen(name) >= CTL_ISCSI_NAME_LEN) 2141255570Strasz return (NULL); 2142255570Strasz 2143255570Strasz newct = malloc(sizeof(*newct), M_CFISCSI, M_WAITOK | M_ZERO); 2144255570Strasz 2145255570Strasz mtx_lock(&softc->lock); 2146255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2147255570Strasz if (strcmp(name, ct->ct_name) != 0) 2148255570Strasz continue; 2149255570Strasz cfiscsi_target_hold(ct); 2150255570Strasz mtx_unlock(&softc->lock); 2151255570Strasz free(newct, M_CFISCSI); 2152255570Strasz return (ct); 2153255570Strasz } 2154255570Strasz 2155255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) 2156255570Strasz newct->ct_luns[i] = -1; 2157255570Strasz 2158255570Strasz strlcpy(newct->ct_name, name, sizeof(newct->ct_name)); 2159255570Strasz if (alias != NULL) 2160255570Strasz strlcpy(newct->ct_alias, alias, sizeof(newct->ct_alias)); 2161255570Strasz refcount_init(&newct->ct_refcount, 1); 2162255570Strasz newct->ct_softc = softc; 2163255570Strasz TAILQ_INSERT_TAIL(&softc->targets, newct, ct_next); 2164255570Strasz mtx_unlock(&softc->lock); 2165255570Strasz 2166255570Strasz return (newct); 2167255570Strasz} 2168255570Strasz 2169255570Strasz/* 2170255570Strasz * Takes LUN from the target space and returns LUN from the CTL space. 2171255570Strasz */ 2172255570Straszstatic uint32_t 2173255570Straszcfiscsi_map_lun(void *arg, uint32_t lun) 2174255570Strasz{ 2175255570Strasz struct cfiscsi_session *cs; 2176255570Strasz 2177255570Strasz cs = arg; 2178255570Strasz 2179255570Strasz if (lun >= CTL_MAX_LUNS) { 2180255570Strasz CFISCSI_DEBUG("requested lun number %d is higher " 2181255570Strasz "than maximum %d", lun, CTL_MAX_LUNS - 1); 2182255570Strasz return (0xffffffff); 2183255570Strasz } 2184255570Strasz 2185255570Strasz if (cs->cs_target->ct_luns[lun] < 0) 2186255570Strasz return (0xffffffff); 2187255570Strasz 2188255570Strasz return (cs->cs_target->ct_luns[lun]); 2189255570Strasz} 2190255570Strasz 2191255570Straszstatic int 2192255570Straszcfiscsi_target_set_lun(struct cfiscsi_target *ct, 2193255570Strasz unsigned long lun_id, unsigned long ctl_lun_id) 2194255570Strasz{ 2195255570Strasz 2196255570Strasz if (lun_id >= CTL_MAX_LUNS) { 2197255570Strasz CFISCSI_WARN("requested lun number %ld is higher " 2198255570Strasz "than maximum %d", lun_id, CTL_MAX_LUNS - 1); 2199255570Strasz return (-1); 2200255570Strasz } 2201255570Strasz 2202255570Strasz if (ct->ct_luns[lun_id] >= 0) { 2203255570Strasz /* 2204255570Strasz * CTL calls cfiscsi_lun_enable() twice for each LUN - once 2205255570Strasz * when the LUN is created, and a second time just before 2206255570Strasz * the port is brought online; don't emit warnings 2207255570Strasz * for that case. 2208255570Strasz */ 2209255570Strasz if (ct->ct_luns[lun_id] == ctl_lun_id) 2210255570Strasz return (0); 2211255570Strasz CFISCSI_WARN("lun %ld already allocated", lun_id); 2212255570Strasz return (-1); 2213255570Strasz } 2214255570Strasz 2215255570Strasz#if 0 2216255570Strasz CFISCSI_DEBUG("adding mapping for lun %ld, target %s " 2217255570Strasz "to ctl lun %ld", lun_id, ct->ct_name, ctl_lun_id); 2218255570Strasz#endif 2219255570Strasz 2220255570Strasz ct->ct_luns[lun_id] = ctl_lun_id; 2221255570Strasz cfiscsi_target_hold(ct); 2222255570Strasz 2223255570Strasz return (0); 2224255570Strasz} 2225255570Strasz 2226255570Straszstatic int 2227255570Straszcfiscsi_target_unset_lun(struct cfiscsi_target *ct, unsigned long lun_id) 2228255570Strasz{ 2229255570Strasz 2230255570Strasz if (ct->ct_luns[lun_id] < 0) { 2231255570Strasz CFISCSI_WARN("lun %ld not allocated", lun_id); 2232255570Strasz return (-1); 2233255570Strasz } 2234255570Strasz 2235255570Strasz ct->ct_luns[lun_id] = -1; 2236255570Strasz cfiscsi_target_release(ct); 2237255570Strasz 2238255570Strasz return (0); 2239255570Strasz} 2240255570Strasz 2241255570Straszstatic int 2242255570Straszcfiscsi_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 2243255570Strasz{ 2244255570Strasz struct cfiscsi_softc *softc; 2245255570Strasz struct cfiscsi_target *ct; 2246255570Strasz struct ctl_be_lun_option *opt; 2247255570Strasz const char *target = NULL, *target_alias = NULL; 2248255570Strasz const char *lun = NULL; 2249255570Strasz unsigned long tmp; 2250255570Strasz 2251255570Strasz softc = (struct cfiscsi_softc *)arg; 2252255570Strasz 2253255570Strasz STAILQ_FOREACH(opt, 2254255570Strasz &control_softc->ctl_luns[lun_id]->be_lun->options, links) { 2255255570Strasz if (strcmp(opt->name, "cfiscsi_target") == 0) 2256255570Strasz target = opt->value; 2257255570Strasz else if (strcmp(opt->name, "cfiscsi_target_alias") == 0) 2258255570Strasz target_alias = opt->value; 2259255570Strasz else if (strcmp(opt->name, "cfiscsi_lun") == 0) 2260255570Strasz lun = opt->value; 2261255570Strasz } 2262255570Strasz 2263255570Strasz if (target == NULL && lun == NULL) 2264255570Strasz return (0); 2265255570Strasz 2266255570Strasz if (target == NULL || lun == NULL) { 2267255570Strasz CFISCSI_WARN("lun added with cfiscsi_target, but without " 2268255570Strasz "cfiscsi_lun, or the other way around; ignoring"); 2269255570Strasz return (0); 2270255570Strasz } 2271255570Strasz 2272255570Strasz ct = cfiscsi_target_find_or_create(softc, target, target_alias); 2273255570Strasz if (ct == NULL) { 2274255570Strasz CFISCSI_WARN("failed to create target \"%s\"", target); 2275255570Strasz return (0); 2276255570Strasz } 2277255570Strasz 2278255570Strasz tmp = strtoul(lun, NULL, 10); 2279255570Strasz cfiscsi_target_set_lun(ct, tmp, lun_id); 2280255570Strasz return (0); 2281255570Strasz} 2282255570Strasz 2283255570Straszstatic int 2284255570Straszcfiscsi_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 2285255570Strasz{ 2286255570Strasz struct cfiscsi_softc *softc; 2287255570Strasz struct cfiscsi_target *ct; 2288255570Strasz int i; 2289255570Strasz 2290255570Strasz softc = (struct cfiscsi_softc *)arg; 2291255570Strasz 2292255570Strasz mtx_lock(&softc->lock); 2293255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2294255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) { 2295255570Strasz if (ct->ct_luns[i] < 0) 2296255570Strasz continue; 2297255570Strasz if (ct->ct_luns[i] != lun_id) 2298255570Strasz continue; 2299255570Strasz cfiscsi_target_unset_lun(ct, i); 2300255570Strasz break; 2301255570Strasz } 2302255570Strasz } 2303255570Strasz mtx_unlock(&softc->lock); 2304255570Strasz return (0); 2305255570Strasz} 2306255570Strasz 2307255570Straszstatic void 2308256065Straszcfiscsi_datamove_in(union ctl_io *io) 2309255570Strasz{ 2310255570Strasz struct cfiscsi_session *cs; 2311255570Strasz struct icl_pdu *request, *response; 2312255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 2313255570Strasz struct iscsi_bhs_data_in *bhsdi; 2314255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2315255570Strasz size_t copy_len, len, off; 2316255570Strasz const char *addr; 2317255824Strasz int ctl_sg_count, error, i; 2318255570Strasz 2319255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2320255570Strasz cs = PDU_SESSION(request); 2321255570Strasz 2322255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2323255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2324255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2325255570Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2326255570Strasz 2327255570Strasz if (io->scsiio.kern_sg_entries > 0) { 2328255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2329255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 2330255570Strasz } else { 2331255570Strasz ctl_sglist = &ctl_sg_entry; 2332255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 2333255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 2334255570Strasz ctl_sg_count = 1; 2335255570Strasz } 2336255570Strasz 2337255570Strasz /* 2338255570Strasz * We need to record it so that we can properly report 2339255570Strasz * underflow/underflow. 2340255570Strasz */ 2341255570Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2342255570Strasz 2343255570Strasz#if 0 2344256065Strasz if (ctl_sg_count > 1) 2345256065Strasz CFISCSI_SESSION_DEBUG(cs, "ctl_sg_count = %d", ctl_sg_count); 2346255570Strasz#endif 2347255570Strasz 2348256065Strasz /* 2349256065Strasz * This is the offset within the current SCSI command; 2350256065Strasz * i.e. for the first call of datamove(), it will be 0, 2351256065Strasz * and for subsequent ones it will be the sum of lengths 2352256065Strasz * of previous ones. 2353256065Strasz */ 2354256065Strasz off = htonl(io->scsiio.kern_rel_offset); 2355256065Strasz if (off > 1) 2356256065Strasz CFISCSI_SESSION_DEBUG(cs, "off = %zd", off); 2357255570Strasz 2358256065Strasz i = 0; 2359256065Strasz addr = NULL; 2360256065Strasz len = 0; 2361256065Strasz response = NULL; 2362256065Strasz bhsdi = NULL; 2363256065Strasz for (;;) { 2364256065Strasz KASSERT(i < ctl_sg_count, ("i >= ctl_sg_count")); 2365256065Strasz if (response == NULL) { 2366256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2367255570Strasz if (response == NULL) { 2368255824Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2369255824Strasz "allocate memory; dropping connection"); 2370256163Strasz ctl_set_busy(&io->scsiio); 2371256163Strasz io->scsiio.be_move_done(io); 2372255824Strasz cfiscsi_session_terminate(cs); 2373255824Strasz return; 2374255824Strasz } 2375256065Strasz bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 2376256065Strasz bhsdi->bhsdi_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_IN; 2377256065Strasz bhsdi->bhsdi_initiator_task_tag = 2378256065Strasz bhssc->bhssc_initiator_task_tag; 2379256065Strasz bhsdi->bhsdi_datasn = htonl(PDU_EXPDATASN(request)); 2380256065Strasz PDU_EXPDATASN(request)++; 2381256065Strasz bhsdi->bhsdi_buffer_offset = htonl(off); 2382256065Strasz } 2383255570Strasz 2384256065Strasz if (len == 0) { 2385256065Strasz addr = ctl_sglist[i].addr; 2386256065Strasz len = ctl_sglist[i].len; 2387256065Strasz KASSERT(len > 0, ("len <= 0")); 2388256065Strasz } 2389255570Strasz 2390256065Strasz copy_len = len; 2391256065Strasz if (response->ip_data_len + copy_len > 2392256065Strasz cs->cs_max_data_segment_length) 2393256065Strasz copy_len = cs->cs_max_data_segment_length - 2394256065Strasz response->ip_data_len; 2395256065Strasz KASSERT(copy_len <= len, ("copy_len > len")); 2396256065Strasz error = icl_pdu_append_data(response, addr, copy_len, M_NOWAIT); 2397256065Strasz if (error != 0) { 2398256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2399256065Strasz "allocate memory; dropping connection"); 2400256065Strasz icl_pdu_free(response); 2401256163Strasz ctl_set_busy(&io->scsiio); 2402256163Strasz io->scsiio.be_move_done(io); 2403256065Strasz cfiscsi_session_terminate(cs); 2404256065Strasz return; 2405256065Strasz } 2406256065Strasz addr += copy_len; 2407256065Strasz len -= copy_len; 2408256065Strasz off += copy_len; 2409256065Strasz io->scsiio.ext_data_filled += copy_len; 2410256065Strasz 2411256065Strasz if (len == 0) { 2412256065Strasz /* 2413256065Strasz * End of scatter-gather segment; 2414256065Strasz * proceed to the next one... 2415256065Strasz */ 2416256065Strasz if (i == ctl_sg_count - 1) { 2417255570Strasz /* 2418256065Strasz * ... unless this was the last one. 2419255570Strasz */ 2420256065Strasz break; 2421255570Strasz } 2422256065Strasz i++; 2423255570Strasz } 2424256065Strasz 2425256065Strasz if (response->ip_data_len == cs->cs_max_data_segment_length) { 2426256065Strasz /* 2427256065Strasz * Can't stuff more data into the current PDU; 2428256065Strasz * queue it. Note that's not enough to check 2429256195Strasz * for kern_data_resid == 0 instead; there 2430256065Strasz * may be several Data-In PDUs for the final 2431256065Strasz * call to cfiscsi_datamove(), and we want 2432256065Strasz * to set the F flag only on the last of them. 2433256065Strasz */ 2434256065Strasz if (off == io->scsiio.kern_total_len) 2435255570Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2436255570Strasz KASSERT(response->ip_data_len > 0, 2437255570Strasz ("sending empty Data-In")); 2438255570Strasz cfiscsi_pdu_queue(response); 2439256065Strasz response = NULL; 2440256065Strasz bhsdi = NULL; 2441255570Strasz } 2442256065Strasz } 2443256065Strasz KASSERT(i == ctl_sg_count - 1, ("missed SG segment")); 2444256065Strasz KASSERT(len == 0, ("missed data from SG segment")); 2445256065Strasz if (response != NULL) { 2446256065Strasz if (off == io->scsiio.kern_total_len) { 2447256065Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2448256065Strasz } else { 2449256065Strasz CFISCSI_SESSION_DEBUG(cs, "not setting the F flag; " 2450256065Strasz "have %zd, need %zd", off, 2451256065Strasz (size_t)io->scsiio.kern_total_len); 2452256065Strasz } 2453256065Strasz KASSERT(response->ip_data_len > 0, ("sending empty Data-In")); 2454256065Strasz cfiscsi_pdu_queue(response); 2455256065Strasz } 2456255570Strasz 2457256065Strasz io->scsiio.be_move_done(io); 2458256065Strasz} 2459255570Strasz 2460256065Straszstatic void 2461256065Straszcfiscsi_datamove_out(union ctl_io *io) 2462256065Strasz{ 2463256065Strasz struct cfiscsi_session *cs; 2464256065Strasz struct icl_pdu *request, *response; 2465256065Strasz const struct iscsi_bhs_scsi_command *bhssc; 2466256065Strasz struct iscsi_bhs_r2t *bhsr2t; 2467256065Strasz struct cfiscsi_data_wait *cdw; 2468256065Strasz uint32_t target_transfer_tag; 2469256065Strasz bool done; 2470256065Strasz 2471256065Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2472256065Strasz cs = PDU_SESSION(request); 2473256065Strasz 2474256065Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2475256065Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2476256065Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2477256065Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2478256065Strasz 2479256065Strasz /* 2480256065Strasz * We need to record it so that we can properly report 2481256065Strasz * underflow/underflow. 2482256065Strasz */ 2483256065Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2484256065Strasz 2485256065Strasz CFISCSI_SESSION_LOCK(cs); 2486256065Strasz target_transfer_tag = cs->cs_target_transfer_tag; 2487256065Strasz cs->cs_target_transfer_tag++; 2488256065Strasz CFISCSI_SESSION_UNLOCK(cs); 2489256065Strasz 2490255570Strasz#if 0 2491256065Strasz CFISCSI_SESSION_DEBUG(cs, "expecting Data-Out with initiator " 2492256065Strasz "task tag 0x%x, target transfer tag 0x%x", 2493256065Strasz bhssc->bhssc_initiator_task_tag, target_transfer_tag); 2494255570Strasz#endif 2495256065Strasz cdw = uma_zalloc(cfiscsi_data_wait_zone, M_NOWAIT | M_ZERO); 2496256065Strasz if (cdw == NULL) { 2497256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2498256065Strasz "allocate memory; dropping connection"); 2499256163Strasz ctl_set_busy(&io->scsiio); 2500256163Strasz io->scsiio.be_move_done(io); 2501256065Strasz cfiscsi_session_terminate(cs); 2502256163Strasz return; 2503256065Strasz } 2504256065Strasz cdw->cdw_ctl_io = io; 2505256065Strasz cdw->cdw_target_transfer_tag = htonl(target_transfer_tag); 2506256065Strasz cdw->cdw_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2507256065Strasz 2508256065Strasz if (cs->cs_immediate_data && icl_pdu_data_segment_length(request) > 0) { 2509256065Strasz done = cfiscsi_handle_data_segment(request, cdw); 2510256065Strasz if (done) { 2511256065Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2512256065Strasz io->scsiio.be_move_done(io); 2513256065Strasz return; 2514255837Strasz } 2515255570Strasz 2516255570Strasz#if 0 2517256065Strasz if (io->scsiio.ext_data_filled != 0) 2518256065Strasz CFISCSI_SESSION_DEBUG(cs, "got %zd bytes of immediate data, need %zd", 2519256065Strasz io->scsiio.ext_data_filled, io->scsiio.kern_data_len); 2520255570Strasz#endif 2521256065Strasz } 2522255570Strasz 2523256065Strasz CFISCSI_SESSION_LOCK(cs); 2524256065Strasz TAILQ_INSERT_TAIL(&cs->cs_waiting_for_data_out, cdw, cdw_next); 2525256065Strasz CFISCSI_SESSION_UNLOCK(cs); 2526255570Strasz 2527256065Strasz /* 2528256065Strasz * XXX: We should limit the number of outstanding R2T PDUs 2529256065Strasz * per task to MaxOutstandingR2T. 2530256065Strasz */ 2531256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2532256065Strasz if (response == NULL) { 2533256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2534256065Strasz "allocate memory; dropping connection"); 2535256163Strasz ctl_set_busy(&io->scsiio); 2536256163Strasz io->scsiio.be_move_done(io); 2537256065Strasz cfiscsi_session_terminate(cs); 2538256163Strasz return; 2539255570Strasz } 2540256065Strasz bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 2541256065Strasz bhsr2t->bhsr2t_opcode = ISCSI_BHS_OPCODE_R2T; 2542256065Strasz bhsr2t->bhsr2t_flags = 0x80; 2543256065Strasz bhsr2t->bhsr2t_lun = bhssc->bhssc_lun; 2544256065Strasz bhsr2t->bhsr2t_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2545256065Strasz bhsr2t->bhsr2t_target_transfer_tag = htonl(target_transfer_tag); 2546256065Strasz /* 2547256065Strasz * XXX: Here we assume that cfiscsi_datamove() won't ever 2548256065Strasz * be running concurrently on several CPUs for a given 2549256065Strasz * command. 2550256065Strasz */ 2551256065Strasz bhsr2t->bhsr2t_r2tsn = htonl(PDU_R2TSN(request)); 2552256065Strasz PDU_R2TSN(request)++; 2553256065Strasz /* 2554256065Strasz * This is the offset within the current SCSI command; 2555256065Strasz * i.e. for the first call of datamove(), it will be 0, 2556256065Strasz * and for subsequent ones it will be the sum of lengths 2557256065Strasz * of previous ones. 2558256065Strasz * 2559256065Strasz * The ext_data_filled is to account for unsolicited 2560256065Strasz * (immediate) data that might have already arrived. 2561256065Strasz */ 2562256065Strasz bhsr2t->bhsr2t_buffer_offset = 2563256065Strasz htonl(io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled); 2564256065Strasz /* 2565256065Strasz * This is the total length (sum of S/G lengths) this call 2566256065Strasz * to cfiscsi_datamove() is supposed to handle. 2567256065Strasz * 2568256065Strasz * XXX: Limit it to MaxBurstLength. 2569256065Strasz */ 2570256065Strasz bhsr2t->bhsr2t_desired_data_transfer_length = 2571256065Strasz htonl(io->scsiio.kern_data_len - io->scsiio.ext_data_filled); 2572256065Strasz cfiscsi_pdu_queue(response); 2573255570Strasz} 2574255570Strasz 2575255570Straszstatic void 2576256065Straszcfiscsi_datamove(union ctl_io *io) 2577256065Strasz{ 2578256065Strasz 2579256065Strasz if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 2580256065Strasz cfiscsi_datamove_in(io); 2581256065Strasz else 2582256065Strasz cfiscsi_datamove_out(io); 2583256065Strasz} 2584256065Strasz 2585256065Straszstatic void 2586255570Straszcfiscsi_scsi_command_done(union ctl_io *io) 2587255570Strasz{ 2588255570Strasz struct icl_pdu *request, *response; 2589255570Strasz struct iscsi_bhs_scsi_command *bhssc; 2590255570Strasz struct iscsi_bhs_scsi_response *bhssr; 2591255570Strasz#ifdef DIAGNOSTIC 2592255570Strasz struct cfiscsi_data_wait *cdw; 2593255570Strasz#endif 2594255570Strasz struct cfiscsi_session *cs; 2595255570Strasz uint16_t sense_length; 2596255570Strasz 2597255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2598255570Strasz cs = PDU_SESSION(request); 2599255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2600255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2601255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2602255570Strasz ("replying to wrong opcode 0x%x", bhssc->bhssc_opcode)); 2603255570Strasz 2604255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 2605255570Strasz // bhssc->bhssc_initiator_task_tag); 2606255570Strasz 2607255570Strasz#ifdef DIAGNOSTIC 2608255570Strasz CFISCSI_SESSION_LOCK(cs); 2609255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) 2610255570Strasz KASSERT(bhssc->bhssc_initiator_task_tag != 2611255570Strasz cdw->cdw_initiator_task_tag, ("dangling cdw")); 2612255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2613255570Strasz#endif 2614255570Strasz 2615255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2616255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 2617255570Strasz bhssr->bhssr_opcode = ISCSI_BHS_OPCODE_SCSI_RESPONSE; 2618255570Strasz bhssr->bhssr_flags = 0x80; 2619255570Strasz /* 2620255570Strasz * XXX: We don't deal with bidirectional under/overflows; 2621255570Strasz * does anything actually support those? 2622255570Strasz */ 2623255570Strasz if (PDU_TOTAL_TRANSFER_LEN(request) < 2624255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2625255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_UNDERFLOW; 2626255570Strasz bhssr->bhssr_residual_count = 2627255570Strasz htonl(ntohl(bhssc->bhssc_expected_data_transfer_length) - 2628255570Strasz PDU_TOTAL_TRANSFER_LEN(request)); 2629255570Strasz //CFISCSI_SESSION_DEBUG(cs, "underflow; residual count %d", 2630255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2631255570Strasz } else if (PDU_TOTAL_TRANSFER_LEN(request) > 2632255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2633255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_OVERFLOW; 2634255570Strasz bhssr->bhssr_residual_count = 2635255570Strasz htonl(PDU_TOTAL_TRANSFER_LEN(request) - 2636255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)); 2637255570Strasz //CFISCSI_SESSION_DEBUG(cs, "overflow; residual count %d", 2638255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2639255570Strasz } 2640255570Strasz bhssr->bhssr_response = BHSSR_RESPONSE_COMMAND_COMPLETED; 2641255570Strasz bhssr->bhssr_status = io->scsiio.scsi_status; 2642255570Strasz bhssr->bhssr_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2643255570Strasz bhssr->bhssr_expdatasn = htonl(PDU_EXPDATASN(request)); 2644255570Strasz 2645255570Strasz if (io->scsiio.sense_len > 0) { 2646255570Strasz#if 0 2647255570Strasz CFISCSI_SESSION_DEBUG(cs, "returning %d bytes of sense data", 2648255570Strasz io->scsiio.sense_len); 2649255570Strasz#endif 2650255570Strasz sense_length = htons(io->scsiio.sense_len); 2651255570Strasz icl_pdu_append_data(response, 2652255570Strasz &sense_length, sizeof(sense_length), M_WAITOK); 2653255570Strasz icl_pdu_append_data(response, 2654255570Strasz &io->scsiio.sense_data, io->scsiio.sense_len, M_WAITOK); 2655255570Strasz } 2656255570Strasz 2657255570Strasz ctl_free_io(io); 2658255570Strasz icl_pdu_free(request); 2659255570Strasz cfiscsi_pdu_queue(response); 2660255570Strasz} 2661255570Strasz 2662255570Straszstatic void 2663255570Straszcfiscsi_task_management_done(union ctl_io *io) 2664255570Strasz{ 2665255570Strasz struct icl_pdu *request, *response; 2666255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 2667255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 2668255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 2669255570Strasz struct cfiscsi_session *cs; 2670255570Strasz 2671255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2672255570Strasz cs = PDU_SESSION(request); 2673255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2674255570Strasz KASSERT((bhstmr->bhstmr_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2675255570Strasz ISCSI_BHS_OPCODE_TASK_REQUEST, 2676255570Strasz ("replying to wrong opcode 0x%x", bhstmr->bhstmr_opcode)); 2677255570Strasz 2678255570Strasz#if 0 2679255570Strasz CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x; referenced task tag 0x%x", 2680255570Strasz bhstmr->bhstmr_initiator_task_tag, 2681255570Strasz bhstmr->bhstmr_referenced_task_tag); 2682255570Strasz#endif 2683255570Strasz 2684255570Strasz if ((bhstmr->bhstmr_function & ~0x80) == 2685255570Strasz BHSTMR_FUNCTION_ABORT_TASK) { 2686255570Strasz /* 2687255570Strasz * Make sure we no longer wait for Data-Out for this command. 2688255570Strasz */ 2689255570Strasz CFISCSI_SESSION_LOCK(cs); 2690255570Strasz TAILQ_FOREACH_SAFE(cdw, 2691255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 2692255570Strasz if (bhstmr->bhstmr_referenced_task_tag != 2693255570Strasz cdw->cdw_initiator_task_tag) 2694255570Strasz continue; 2695255570Strasz 2696255570Strasz#if 0 2697255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task " 2698255570Strasz "tag 0x%x", bhstmr->bhstmr_initiator_task_tag); 2699255570Strasz#endif 2700255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, 2701255570Strasz cdw, cdw_next); 2702255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 2703255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2704255570Strasz } 2705255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2706255570Strasz } 2707255570Strasz 2708255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2709255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 2710255570Strasz response->ip_bhs; 2711255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 2712255570Strasz bhstmr2->bhstmr_flags = 0x80; 2713255570Strasz if (io->io_hdr.status == CTL_SUCCESS) { 2714255570Strasz bhstmr2->bhstmr_response = BHSTMR_RESPONSE_FUNCTION_COMPLETE; 2715255570Strasz } else { 2716255570Strasz /* 2717255570Strasz * XXX: How to figure out what exactly went wrong? iSCSI spec 2718255570Strasz * expects us to provide detailed error, e.g. "Task does 2719255570Strasz * not exist" or "LUN does not exist". 2720255570Strasz */ 2721255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED"); 2722255570Strasz bhstmr2->bhstmr_response = 2723255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 2724255570Strasz } 2725255570Strasz bhstmr2->bhstmr_initiator_task_tag = bhstmr->bhstmr_initiator_task_tag; 2726255570Strasz 2727255570Strasz ctl_free_io(io); 2728255570Strasz icl_pdu_free(request); 2729255570Strasz cfiscsi_pdu_queue(response); 2730255570Strasz} 2731255570Strasz 2732255570Straszstatic void 2733255570Straszcfiscsi_done(union ctl_io *io) 2734255570Strasz{ 2735255570Strasz struct icl_pdu *request; 2736255570Strasz struct cfiscsi_session *cs; 2737255570Strasz 2738255570Strasz KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 2739255570Strasz ("invalid CTL status %#x", io->io_hdr.status)); 2740255570Strasz 2741255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2742255570Strasz if (request == NULL) { 2743255570Strasz /* 2744255570Strasz * Implicit task termination has just completed; nothing to do. 2745255570Strasz */ 2746255570Strasz return; 2747255570Strasz } 2748255570Strasz 2749255570Strasz cs = PDU_SESSION(request); 2750255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 2751255570Strasz 2752255570Strasz switch (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) { 2753255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 2754255570Strasz cfiscsi_scsi_command_done(io); 2755255570Strasz break; 2756255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 2757255570Strasz cfiscsi_task_management_done(io); 2758255570Strasz break; 2759255570Strasz default: 2760255570Strasz panic("cfiscsi_done called with wrong opcode 0x%x", 2761255570Strasz request->ip_bhs->bhs_opcode); 2762255570Strasz } 2763255570Strasz} 2764