ctl_frontend_iscsi.c revision 268260
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: stable/10/sys/cam/ctl/ctl_frontend_iscsi.c 268260 2014-07-04 16:10:14Z mav $ 30255570Strasz */ 31255570Strasz 32255570Strasz/* 33255570Strasz * CTL frontend for the iSCSI protocol. 34255570Strasz */ 35255570Strasz 36255570Strasz#include <sys/cdefs.h> 37255570Strasz__FBSDID("$FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_iscsi.c 268260 2014-07-04 16:10:14Z mav $"); 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 78265508Strasz#ifdef ICL_KERNEL_PROXY 79265508StraszFEATURE(cfiscsi_kernel_proxy, "iSCSI target built with ICL_KERNEL_PROXY"); 80265508Strasz#endif 81265508Strasz 82255570Straszstatic MALLOC_DEFINE(M_CFISCSI, "cfiscsi", "Memory used for CTL iSCSI frontend"); 83255570Straszstatic uma_zone_t cfiscsi_data_wait_zone; 84255570Strasz 85255570StraszSYSCTL_NODE(_kern_cam_ctl, OID_AUTO, iscsi, CTLFLAG_RD, 0, 86255570Strasz "CAM Target Layer iSCSI Frontend"); 87255570Straszstatic int debug = 3; 88255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.debug", &debug); 89265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 90255570Strasz &debug, 1, "Enable debug messages"); 91255570Straszstatic int ping_timeout = 5; 92255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.ping_timeout", &ping_timeout); 93265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, 94255570Strasz &ping_timeout, 5, "Interval between ping (NOP-Out) requests, in seconds"); 95255570Straszstatic int login_timeout = 60; 96255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.login_timeout", &login_timeout); 97265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, 98255570Strasz &login_timeout, 60, "Time to wait for ctld(8) to finish Login Phase, in seconds"); 99255570Straszstatic int maxcmdsn_delta = 256; 100255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.maxcmdsn_delta", &maxcmdsn_delta); 101265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, maxcmdsn_delta, CTLFLAG_RWTUN, 102255570Strasz &maxcmdsn_delta, 256, "Number of commands the initiator can send " 103255570Strasz "without confirmation"); 104255570Strasz 105265505Strasz#define CFISCSI_DEBUG(X, ...) \ 106265505Strasz do { \ 107265505Strasz if (debug > 1) { \ 108265505Strasz printf("%s: " X "\n", \ 109265505Strasz __func__, ## __VA_ARGS__); \ 110265505Strasz } \ 111255570Strasz } while (0) 112255570Strasz 113265505Strasz#define CFISCSI_WARN(X, ...) \ 114265505Strasz do { \ 115265505Strasz if (debug > 0) { \ 116265505Strasz printf("WARNING: %s: " X "\n", \ 117265505Strasz __func__, ## __VA_ARGS__); \ 118265505Strasz } \ 119255570Strasz } while (0) 120255570Strasz 121265505Strasz#define CFISCSI_SESSION_DEBUG(S, X, ...) \ 122265505Strasz do { \ 123265505Strasz if (debug > 1) { \ 124265505Strasz printf("%s: %s (%s): " X "\n", \ 125265505Strasz __func__, S->cs_initiator_addr, \ 126265505Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 127265505Strasz } \ 128255570Strasz } while (0) 129255570Strasz 130265505Strasz#define CFISCSI_SESSION_WARN(S, X, ...) \ 131265505Strasz do { \ 132265505Strasz if (debug > 0) { \ 133265505Strasz printf("WARNING: %s (%s): " X "\n", \ 134265505Strasz S->cs_initiator_addr, \ 135265505Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 136265505Strasz } \ 137255570Strasz } while (0) 138255570Strasz 139255570Strasz#define CFISCSI_SESSION_LOCK(X) mtx_lock(&X->cs_lock) 140255570Strasz#define CFISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->cs_lock) 141255570Strasz#define CFISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->cs_lock, MA_OWNED) 142255570Strasz 143255570Strasz#define CONN_SESSION(X) ((struct cfiscsi_session *)(X)->ic_prv0) 144255570Strasz#define PDU_SESSION(X) CONN_SESSION((X)->ip_conn) 145255570Strasz#define PDU_EXPDATASN(X) (X)->ip_prv0 146255570Strasz#define PDU_TOTAL_TRANSFER_LEN(X) (X)->ip_prv1 147255570Strasz#define PDU_R2TSN(X) (X)->ip_prv2 148255570Strasz 149255570Straszint cfiscsi_init(void); 150255570Straszstatic void cfiscsi_online(void *arg); 151255570Straszstatic void cfiscsi_offline(void *arg); 152255570Straszstatic int cfiscsi_targ_enable(void *arg, struct ctl_id targ_id); 153255570Straszstatic int cfiscsi_targ_disable(void *arg, struct ctl_id targ_id); 154255570Straszstatic int cfiscsi_lun_enable(void *arg, 155255570Strasz struct ctl_id target_id, int lun_id); 156255570Straszstatic int cfiscsi_lun_disable(void *arg, 157255570Strasz struct ctl_id target_id, int lun_id); 158255570Straszstatic int cfiscsi_ioctl(struct cdev *dev, 159255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td); 160255570Straszstatic int cfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len); 161255570Straszstatic void cfiscsi_datamove(union ctl_io *io); 162255570Straszstatic void cfiscsi_done(union ctl_io *io); 163255570Straszstatic uint32_t cfiscsi_map_lun(void *arg, uint32_t lun); 164255848Straszstatic bool cfiscsi_pdu_update_cmdsn(const struct icl_pdu *request); 165255570Straszstatic void cfiscsi_pdu_handle_nop_out(struct icl_pdu *request); 166255570Straszstatic void cfiscsi_pdu_handle_scsi_command(struct icl_pdu *request); 167255570Straszstatic void cfiscsi_pdu_handle_task_request(struct icl_pdu *request); 168255570Straszstatic void cfiscsi_pdu_handle_data_out(struct icl_pdu *request); 169255570Straszstatic void cfiscsi_pdu_handle_logout_request(struct icl_pdu *request); 170255570Straszstatic void cfiscsi_session_terminate(struct cfiscsi_session *cs); 171255570Straszstatic struct cfiscsi_target *cfiscsi_target_find(struct cfiscsi_softc 172255570Strasz *softc, const char *name); 173255570Straszstatic void cfiscsi_target_release(struct cfiscsi_target *ct); 174255570Straszstatic void cfiscsi_session_delete(struct cfiscsi_session *cs); 175255570Strasz 176255570Straszstatic struct cfiscsi_softc cfiscsi_softc; 177255570Straszextern struct ctl_softc *control_softc; 178255570Strasz 179255570Straszstatic int cfiscsi_module_event_handler(module_t, int /*modeventtype_t*/, void *); 180255570Strasz 181255570Straszstatic moduledata_t cfiscsi_moduledata = { 182255570Strasz "ctlcfiscsi", 183255570Strasz cfiscsi_module_event_handler, 184255570Strasz NULL 185255570Strasz}; 186255570Strasz 187255570StraszDECLARE_MODULE(ctlcfiscsi, cfiscsi_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH); 188255570StraszMODULE_VERSION(ctlcfiscsi, 1); 189255570StraszMODULE_DEPEND(ctlcfiscsi, ctl, 1, 1, 1); 190255570StraszMODULE_DEPEND(ctlcfiscsi, icl, 1, 1, 1); 191255570Strasz 192255570Straszstatic struct icl_pdu * 193255570Straszcfiscsi_pdu_new_response(struct icl_pdu *request, int flags) 194255570Strasz{ 195255570Strasz 196255570Strasz return (icl_pdu_new_bhs(request->ip_conn, flags)); 197255570Strasz} 198255570Strasz 199255848Straszstatic bool 200255570Straszcfiscsi_pdu_update_cmdsn(const struct icl_pdu *request) 201255570Strasz{ 202255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 203255570Strasz struct cfiscsi_session *cs; 204255570Strasz uint32_t cmdsn, expstatsn; 205255570Strasz 206255570Strasz cs = PDU_SESSION(request); 207255570Strasz 208255570Strasz /* 209255570Strasz * Every incoming PDU - not just NOP-Out - resets the ping timer. 210255570Strasz * The purpose of the timeout is to reset the connection when it stalls; 211255570Strasz * we don't want this to happen when NOP-In or NOP-Out ends up delayed 212255570Strasz * in some queue. 213255570Strasz * 214255570Strasz * XXX: Locking? 215255570Strasz */ 216255570Strasz cs->cs_timeout = 0; 217255570Strasz 218255570Strasz /* 219255570Strasz * Data-Out PDUs don't contain CmdSN. 220255570Strasz */ 221255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 222255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 223255848Strasz return (false); 224255570Strasz 225255570Strasz /* 226255570Strasz * We're only using fields common for all the request 227255570Strasz * (initiator -> target) PDUs. 228255570Strasz */ 229255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 230255570Strasz cmdsn = ntohl(bhssc->bhssc_cmdsn); 231255570Strasz expstatsn = ntohl(bhssc->bhssc_expstatsn); 232255570Strasz 233255570Strasz CFISCSI_SESSION_LOCK(cs); 234255570Strasz#if 0 235255570Strasz if (expstatsn != cs->cs_statsn) { 236255570Strasz CFISCSI_SESSION_DEBUG(cs, "received PDU with ExpStatSN %d, " 237255570Strasz "while current StatSN is %d", expstatsn, 238255570Strasz cs->cs_statsn); 239255570Strasz } 240255570Strasz#endif 241255570Strasz 242255570Strasz /* 243255848Strasz * The target MUST silently ignore any non-immediate command outside 244255848Strasz * of this range. 245255570Strasz */ 246255848Strasz if (cmdsn < cs->cs_cmdsn || cmdsn > cs->cs_cmdsn + maxcmdsn_delta) { 247255848Strasz CFISCSI_SESSION_UNLOCK(cs); 248255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with CmdSN %d, " 249255570Strasz "while expected CmdSN was %d", cmdsn, cs->cs_cmdsn); 250255848Strasz return (true); 251255570Strasz } 252255570Strasz 253255570Strasz if ((request->ip_bhs->bhs_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 254255570Strasz cs->cs_cmdsn++; 255255570Strasz 256255570Strasz CFISCSI_SESSION_UNLOCK(cs); 257255848Strasz 258255848Strasz return (false); 259255570Strasz} 260255570Strasz 261255570Straszstatic void 262255570Straszcfiscsi_pdu_handle(struct icl_pdu *request) 263255570Strasz{ 264255570Strasz struct cfiscsi_session *cs; 265255848Strasz bool ignore; 266255570Strasz 267255570Strasz cs = PDU_SESSION(request); 268255570Strasz 269255848Strasz ignore = cfiscsi_pdu_update_cmdsn(request); 270255848Strasz if (ignore) { 271255848Strasz icl_pdu_free(request); 272255848Strasz return; 273255848Strasz } 274255570Strasz 275255570Strasz /* 276255570Strasz * Handle the PDU; this includes e.g. receiving the remaining 277255570Strasz * part of PDU and submitting the SCSI command to CTL 278255570Strasz * or queueing a reply. The handling routine is responsible 279255570Strasz * for freeing the PDU when it's no longer needed. 280255570Strasz */ 281255570Strasz switch (request->ip_bhs->bhs_opcode & 282255570Strasz ~ISCSI_BHS_OPCODE_IMMEDIATE) { 283255570Strasz case ISCSI_BHS_OPCODE_NOP_OUT: 284255570Strasz cfiscsi_pdu_handle_nop_out(request); 285255570Strasz break; 286255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 287255570Strasz cfiscsi_pdu_handle_scsi_command(request); 288255570Strasz break; 289255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 290255570Strasz cfiscsi_pdu_handle_task_request(request); 291255570Strasz break; 292255570Strasz case ISCSI_BHS_OPCODE_SCSI_DATA_OUT: 293255570Strasz cfiscsi_pdu_handle_data_out(request); 294255570Strasz break; 295255570Strasz case ISCSI_BHS_OPCODE_LOGOUT_REQUEST: 296255570Strasz cfiscsi_pdu_handle_logout_request(request); 297255570Strasz break; 298255570Strasz default: 299255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with unsupported " 300255570Strasz "opcode 0x%x; dropping connection", 301255570Strasz request->ip_bhs->bhs_opcode); 302256197Strasz icl_pdu_free(request); 303255570Strasz cfiscsi_session_terminate(cs); 304255570Strasz } 305255570Strasz 306255570Strasz} 307255570Strasz 308255570Straszstatic void 309255570Straszcfiscsi_receive_callback(struct icl_pdu *request) 310255570Strasz{ 311255570Strasz struct cfiscsi_session *cs; 312255570Strasz 313255570Strasz cs = PDU_SESSION(request); 314255570Strasz 315255570Strasz#ifdef ICL_KERNEL_PROXY 316255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 317255570Strasz if (cs->cs_login_pdu == NULL) 318255570Strasz cs->cs_login_pdu = request; 319255570Strasz else 320255570Strasz icl_pdu_free(request); 321255570Strasz cv_signal(&cs->cs_login_cv); 322255570Strasz return; 323255570Strasz } 324255570Strasz#endif 325255570Strasz 326255570Strasz cfiscsi_pdu_handle(request); 327255570Strasz} 328255570Strasz 329255570Straszstatic void 330255570Straszcfiscsi_error_callback(struct icl_conn *ic) 331255570Strasz{ 332255570Strasz struct cfiscsi_session *cs; 333255570Strasz 334255570Strasz cs = CONN_SESSION(ic); 335255570Strasz 336255570Strasz CFISCSI_SESSION_WARN(cs, "connection error; dropping connection"); 337255570Strasz cfiscsi_session_terminate(cs); 338255570Strasz} 339255570Strasz 340255570Straszstatic int 341255570Straszcfiscsi_pdu_prepare(struct icl_pdu *response) 342255570Strasz{ 343255570Strasz struct cfiscsi_session *cs; 344255570Strasz struct iscsi_bhs_scsi_response *bhssr; 345255570Strasz bool advance_statsn = true; 346255570Strasz 347255570Strasz cs = PDU_SESSION(response); 348255570Strasz 349255570Strasz CFISCSI_SESSION_LOCK_ASSERT(cs); 350255570Strasz 351255570Strasz /* 352255570Strasz * We're only using fields common for all the response 353255570Strasz * (target -> initiator) PDUs. 354255570Strasz */ 355255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 356255570Strasz 357255570Strasz /* 358255570Strasz * 10.8.3: "The StatSN for this connection is not advanced 359255570Strasz * after this PDU is sent." 360255570Strasz */ 361255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_R2T) 362255570Strasz advance_statsn = false; 363255570Strasz 364255570Strasz /* 365255570Strasz * 10.19.2: "However, when the Initiator Task Tag is set to 0xffffffff, 366255570Strasz * StatSN for the connection is not advanced after this PDU is sent." 367255570Strasz */ 368255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_NOP_IN && 369255570Strasz bhssr->bhssr_initiator_task_tag == 0xffffffff) 370255570Strasz advance_statsn = false; 371255570Strasz 372255570Strasz /* 373255570Strasz * See the comment below - StatSN is not meaningful and must 374255570Strasz * not be advanced. 375255570Strasz */ 376255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_SCSI_DATA_IN) 377255570Strasz advance_statsn = false; 378255570Strasz 379255570Strasz /* 380255570Strasz * 10.7.3: "The fields StatSN, Status, and Residual Count 381255570Strasz * only have meaningful content if the S bit is set to 1." 382255570Strasz */ 383255570Strasz if (bhssr->bhssr_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN) 384255570Strasz bhssr->bhssr_statsn = htonl(cs->cs_statsn); 385255570Strasz bhssr->bhssr_expcmdsn = htonl(cs->cs_cmdsn); 386255570Strasz bhssr->bhssr_maxcmdsn = htonl(cs->cs_cmdsn + maxcmdsn_delta); 387255570Strasz 388255570Strasz if (advance_statsn) 389255570Strasz cs->cs_statsn++; 390255570Strasz 391255570Strasz return (0); 392255570Strasz} 393255570Strasz 394255570Straszstatic void 395255570Straszcfiscsi_pdu_queue(struct icl_pdu *response) 396255570Strasz{ 397255570Strasz struct cfiscsi_session *cs; 398255570Strasz 399255570Strasz cs = PDU_SESSION(response); 400255570Strasz 401255570Strasz CFISCSI_SESSION_LOCK(cs); 402255570Strasz cfiscsi_pdu_prepare(response); 403255570Strasz icl_pdu_queue(response); 404255570Strasz CFISCSI_SESSION_UNLOCK(cs); 405255570Strasz} 406255570Strasz 407255570Straszstatic uint32_t 408255570Straszcfiscsi_decode_lun(uint64_t encoded) 409255570Strasz{ 410255570Strasz uint8_t lun[8]; 411255570Strasz uint32_t result; 412255570Strasz 413255570Strasz /* 414255570Strasz * The LUN field in iSCSI PDUs may look like an ordinary 64 bit number, 415255570Strasz * but is in fact an evil, multidimensional structure defined 416255570Strasz * in SCSI Architecture Model 5 (SAM-5), section 4.6. 417255570Strasz */ 418255570Strasz memcpy(lun, &encoded, sizeof(lun)); 419255570Strasz switch (lun[0] & 0xC0) { 420255570Strasz case 0x00: 421255570Strasz if ((lun[0] & 0x3f) != 0 || lun[2] != 0 || lun[3] != 0 || 422255570Strasz lun[4] != 0 || lun[5] != 0 || lun[6] != 0 || lun[7] != 0) { 423255570Strasz CFISCSI_WARN("malformed LUN " 424255570Strasz "(peripheral device addressing method): 0x%jx", 425255570Strasz (uintmax_t)encoded); 426255570Strasz result = 0xffffffff; 427255570Strasz break; 428255570Strasz } 429255570Strasz result = lun[1]; 430255570Strasz break; 431255570Strasz case 0x40: 432255570Strasz if (lun[2] != 0 || lun[3] != 0 || lun[4] != 0 || lun[5] != 0 || 433255570Strasz lun[6] != 0 || lun[7] != 0) { 434255570Strasz CFISCSI_WARN("malformed LUN " 435255570Strasz "(flat address space addressing method): 0x%jx", 436255570Strasz (uintmax_t)encoded); 437255570Strasz result = 0xffffffff; 438255570Strasz break; 439255570Strasz } 440255570Strasz result = ((lun[0] & 0x3f) << 8) + lun[1]; 441255570Strasz break; 442255570Strasz case 0xC0: 443255570Strasz if (lun[0] != 0xD2 || lun[4] != 0 || lun[5] != 0 || 444255570Strasz lun[6] != 0 || lun[7] != 0) { 445255570Strasz CFISCSI_WARN("malformed LUN (extended flat " 446255570Strasz "address space addressing method): 0x%jx", 447255570Strasz (uintmax_t)encoded); 448255570Strasz result = 0xffffffff; 449255570Strasz break; 450255570Strasz } 451255570Strasz result = (lun[1] << 16) + (lun[2] << 8) + lun[3]; 452255570Strasz default: 453255570Strasz CFISCSI_WARN("unsupported LUN format 0x%jx", 454255570Strasz (uintmax_t)encoded); 455255570Strasz result = 0xffffffff; 456255570Strasz break; 457255570Strasz } 458255570Strasz 459255570Strasz return (result); 460255570Strasz} 461255570Strasz 462255570Straszstatic void 463255570Straszcfiscsi_pdu_handle_nop_out(struct icl_pdu *request) 464255570Strasz{ 465255570Strasz struct cfiscsi_session *cs; 466255570Strasz struct iscsi_bhs_nop_out *bhsno; 467255570Strasz struct iscsi_bhs_nop_in *bhsni; 468255570Strasz struct icl_pdu *response; 469256187Strasz void *data = NULL; 470256187Strasz size_t datasize; 471256187Strasz int error; 472255570Strasz 473255570Strasz cs = PDU_SESSION(request); 474255570Strasz bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 475255570Strasz 476255570Strasz if (bhsno->bhsno_initiator_task_tag == 0xffffffff) { 477255570Strasz /* 478255570Strasz * Nothing to do, iscsi_pdu_update_statsn() already 479255570Strasz * zeroed the timeout. 480255570Strasz */ 481255570Strasz icl_pdu_free(request); 482255570Strasz return; 483255570Strasz } 484255570Strasz 485256187Strasz datasize = icl_pdu_data_segment_length(request); 486256187Strasz if (datasize > 0) { 487256187Strasz data = malloc(datasize, M_CFISCSI, M_NOWAIT | M_ZERO); 488256187Strasz if (data == NULL) { 489256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 490256187Strasz "dropping connection"); 491256187Strasz icl_pdu_free(request); 492256187Strasz cfiscsi_session_terminate(cs); 493256187Strasz return; 494256187Strasz } 495256187Strasz icl_pdu_get_data(request, 0, data, datasize); 496256187Strasz } 497256187Strasz 498255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 499255570Strasz if (response == NULL) { 500256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 501256187Strasz "droppping connection"); 502256187Strasz free(data, M_CFISCSI); 503255570Strasz icl_pdu_free(request); 504256187Strasz cfiscsi_session_terminate(cs); 505255570Strasz return; 506255570Strasz } 507255570Strasz bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 508255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 509255570Strasz bhsni->bhsni_flags = 0x80; 510255570Strasz bhsni->bhsni_initiator_task_tag = bhsno->bhsno_initiator_task_tag; 511255570Strasz bhsni->bhsni_target_transfer_tag = 0xffffffff; 512256187Strasz if (datasize > 0) { 513256187Strasz error = icl_pdu_append_data(response, data, datasize, M_NOWAIT); 514256187Strasz if (error != 0) { 515256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 516256187Strasz "dropping connection"); 517256187Strasz free(data, M_CFISCSI); 518256187Strasz icl_pdu_free(request); 519256187Strasz icl_pdu_free(response); 520256187Strasz cfiscsi_session_terminate(cs); 521256187Strasz return; 522256187Strasz } 523256187Strasz free(data, M_CFISCSI); 524256187Strasz } 525255570Strasz 526255570Strasz icl_pdu_free(request); 527255570Strasz cfiscsi_pdu_queue(response); 528255570Strasz} 529255570Strasz 530255570Straszstatic void 531255570Straszcfiscsi_pdu_handle_scsi_command(struct icl_pdu *request) 532255570Strasz{ 533255570Strasz struct iscsi_bhs_scsi_command *bhssc; 534255570Strasz struct cfiscsi_session *cs; 535255570Strasz union ctl_io *io; 536255570Strasz int error; 537255570Strasz 538255570Strasz cs = PDU_SESSION(request); 539255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 540255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 541255570Strasz // bhssc->bhssc_initiator_task_tag); 542255570Strasz 543255570Strasz if (request->ip_data_len > 0 && cs->cs_immediate_data == false) { 544255570Strasz CFISCSI_SESSION_WARN(cs, "unsolicited data with " 545255570Strasz "ImmediateData=No; dropping connection"); 546256197Strasz icl_pdu_free(request); 547255570Strasz cfiscsi_session_terminate(cs); 548255570Strasz return; 549255570Strasz } 550255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 551255570Strasz if (io == NULL) { 552256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io; " 553256197Strasz "dropping connection"); 554255570Strasz icl_pdu_free(request); 555256197Strasz cfiscsi_session_terminate(cs); 556255570Strasz return; 557255570Strasz } 558255570Strasz ctl_zero_io(io); 559255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 560255570Strasz io->io_hdr.io_type = CTL_IO_SCSI; 561255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 562255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_softc->fe.targ_port; 563255570Strasz io->io_hdr.nexus.targ_target.id = 0; 564255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhssc->bhssc_lun); 565255570Strasz io->io_hdr.nexus.lun_map_fn = cfiscsi_map_lun; 566255570Strasz io->io_hdr.nexus.lun_map_arg = cs; 567255570Strasz io->scsiio.tag_num = bhssc->bhssc_initiator_task_tag; 568255570Strasz switch ((bhssc->bhssc_flags & BHSSC_FLAGS_ATTR)) { 569255570Strasz case BHSSC_FLAGS_ATTR_UNTAGGED: 570255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 571255570Strasz break; 572255570Strasz case BHSSC_FLAGS_ATTR_SIMPLE: 573255570Strasz io->scsiio.tag_type = CTL_TAG_SIMPLE; 574255570Strasz break; 575255570Strasz case BHSSC_FLAGS_ATTR_ORDERED: 576255570Strasz io->scsiio.tag_type = CTL_TAG_ORDERED; 577255570Strasz break; 578255570Strasz case BHSSC_FLAGS_ATTR_HOQ: 579255570Strasz io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 580255570Strasz break; 581255570Strasz case BHSSC_FLAGS_ATTR_ACA: 582255570Strasz io->scsiio.tag_type = CTL_TAG_ACA; 583255570Strasz break; 584255570Strasz default: 585255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 586255570Strasz CFISCSI_SESSION_WARN(cs, "unhandled tag type %d", 587255570Strasz bhssc->bhssc_flags & BHSSC_FLAGS_ATTR); 588255570Strasz break; 589255570Strasz } 590255570Strasz io->scsiio.cdb_len = sizeof(bhssc->bhssc_cdb); /* Which is 16. */ 591255570Strasz memcpy(io->scsiio.cdb, bhssc->bhssc_cdb, sizeof(bhssc->bhssc_cdb)); 592255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 593255570Strasz error = ctl_queue(io); 594255570Strasz if (error != CTL_RETVAL_COMPLETE) { 595256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 596256197Strasz "dropping connection", error); 597255570Strasz ctl_free_io(io); 598255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 599255570Strasz icl_pdu_free(request); 600256197Strasz cfiscsi_session_terminate(cs); 601255570Strasz } 602255570Strasz} 603255570Strasz 604255570Straszstatic void 605255570Straszcfiscsi_pdu_handle_task_request(struct icl_pdu *request) 606255570Strasz{ 607255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 608255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 609255570Strasz struct icl_pdu *response; 610255570Strasz struct cfiscsi_session *cs; 611255570Strasz union ctl_io *io; 612255570Strasz int error; 613255570Strasz 614255570Strasz cs = PDU_SESSION(request); 615255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 616255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 617255570Strasz if (io == NULL) { 618256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io;" 619256197Strasz "dropping connection"); 620255570Strasz icl_pdu_free(request); 621256197Strasz cfiscsi_session_terminate(cs); 622255570Strasz return; 623255570Strasz } 624255570Strasz ctl_zero_io(io); 625255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 626255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 627255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 628255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_softc->fe.targ_port; 629255570Strasz io->io_hdr.nexus.targ_target.id = 0; 630255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhstmr->bhstmr_lun); 631255570Strasz io->io_hdr.nexus.lun_map_fn = cfiscsi_map_lun; 632255570Strasz io->io_hdr.nexus.lun_map_arg = cs; 633255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 634255570Strasz 635255570Strasz switch (bhstmr->bhstmr_function & ~0x80) { 636255570Strasz case BHSTMR_FUNCTION_ABORT_TASK: 637255570Strasz#if 0 638255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK"); 639255570Strasz#endif 640255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 641255570Strasz io->taskio.tag_num = bhstmr->bhstmr_referenced_task_tag; 642255570Strasz break; 643255570Strasz case BHSTMR_FUNCTION_LOGICAL_UNIT_RESET: 644255570Strasz#if 0 645255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_LOGICAL_UNIT_RESET"); 646255570Strasz#endif 647255570Strasz io->taskio.task_action = CTL_TASK_LUN_RESET; 648255570Strasz break; 649264602Strasz case BHSTMR_FUNCTION_TARGET_WARM_RESET: 650255570Strasz#if 0 651264602Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_TARGET_WARM_RESET"); 652255570Strasz#endif 653264602Strasz io->taskio.task_action = CTL_TASK_TARGET_RESET; 654255570Strasz break; 655255570Strasz default: 656255570Strasz CFISCSI_SESSION_DEBUG(cs, "unsupported function 0x%x", 657255570Strasz bhstmr->bhstmr_function & ~0x80); 658255570Strasz ctl_free_io(io); 659255570Strasz 660255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 661255570Strasz if (response == NULL) { 662256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 663256197Strasz "dropping connection"); 664255570Strasz icl_pdu_free(request); 665256197Strasz cfiscsi_session_terminate(cs); 666255570Strasz return; 667255570Strasz } 668255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 669255570Strasz response->ip_bhs; 670255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 671255570Strasz bhstmr2->bhstmr_flags = 0x80; 672255570Strasz bhstmr2->bhstmr_response = 673255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 674255570Strasz bhstmr2->bhstmr_initiator_task_tag = 675255570Strasz bhstmr->bhstmr_initiator_task_tag; 676255570Strasz icl_pdu_free(request); 677255570Strasz cfiscsi_pdu_queue(response); 678255570Strasz return; 679255570Strasz } 680255570Strasz 681255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 682255570Strasz error = ctl_queue(io); 683255570Strasz if (error != CTL_RETVAL_COMPLETE) { 684256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 685256197Strasz "dropping connection", error); 686255570Strasz ctl_free_io(io); 687255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 688255570Strasz icl_pdu_free(request); 689256197Strasz cfiscsi_session_terminate(cs); 690255570Strasz } 691255570Strasz} 692255570Strasz 693255570Straszstatic bool 694255570Straszcfiscsi_handle_data_segment(struct icl_pdu *request, struct cfiscsi_data_wait *cdw) 695255570Strasz{ 696255570Strasz struct iscsi_bhs_data_out *bhsdo; 697255570Strasz struct cfiscsi_session *cs; 698255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 699256195Strasz size_t copy_len, len, off, buffer_offset; 700255570Strasz int ctl_sg_count; 701255570Strasz union ctl_io *io; 702255570Strasz 703255570Strasz cs = PDU_SESSION(request); 704255570Strasz 705255570Strasz KASSERT((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 706255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT || 707255570Strasz (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 708255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 709255570Strasz ("bad opcode 0x%x", request->ip_bhs->bhs_opcode)); 710255570Strasz 711255570Strasz /* 712265640Smav * We're only using fields common for Data-Out and SCSI Command PDUs. 713255570Strasz */ 714255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 715255570Strasz 716255570Strasz io = cdw->cdw_ctl_io; 717255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 718255570Strasz ("CTL_FLAG_DATA_IN")); 719255570Strasz 720255570Strasz#if 0 721255570Strasz CFISCSI_SESSION_DEBUG(cs, "received %zd bytes out of %d", 722255570Strasz request->ip_data_len, io->scsiio.kern_total_len); 723255570Strasz#endif 724255570Strasz 725255570Strasz if (io->scsiio.kern_sg_entries > 0) { 726255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 727255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 728255570Strasz } else { 729255570Strasz ctl_sglist = &ctl_sg_entry; 730255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 731255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 732255570Strasz ctl_sg_count = 1; 733255570Strasz } 734255570Strasz 735255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 736255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 737255570Strasz buffer_offset = ntohl(bhsdo->bhsdo_buffer_offset); 738255570Strasz else 739255570Strasz buffer_offset = 0; 740268141Smav len = icl_pdu_data_segment_length(request); 741255570Strasz 742255570Strasz /* 743255570Strasz * Make sure the offset, as sent by the initiator, matches the offset 744255570Strasz * we're supposed to be at in the scatter-gather list. 745255570Strasz */ 746268141Smav if (buffer_offset > 747268141Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled || 748268141Smav buffer_offset + len <= 749265640Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled) { 750255570Strasz CFISCSI_SESSION_WARN(cs, "received bad buffer offset %zd, " 751265640Smav "expected %zd; dropping connection", buffer_offset, 752265640Smav (size_t)io->scsiio.kern_rel_offset + 753255570Strasz (size_t)io->scsiio.ext_data_filled); 754265640Smav ctl_set_data_phase_error(&io->scsiio); 755255570Strasz cfiscsi_session_terminate(cs); 756255570Strasz return (true); 757255570Strasz } 758255570Strasz 759256195Strasz /* 760256195Strasz * This is the offset within the PDU data segment, as opposed 761256195Strasz * to buffer_offset, which is the offset within the task (SCSI 762256195Strasz * command). 763256195Strasz */ 764268141Smav off = io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled - 765268141Smav buffer_offset; 766256195Strasz 767256195Strasz /* 768256195Strasz * Iterate over the scatter/gather segments, filling them with data 769256195Strasz * from the PDU data segment. Note that this can get called multiple 770256195Strasz * times for one SCSI command; the cdw structure holds state for the 771256195Strasz * scatter/gather list. 772256195Strasz */ 773255570Strasz for (;;) { 774255570Strasz KASSERT(cdw->cdw_sg_index < ctl_sg_count, 775255570Strasz ("cdw->cdw_sg_index >= ctl_sg_count")); 776255570Strasz if (cdw->cdw_sg_len == 0) { 777255570Strasz cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 778255570Strasz cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 779255570Strasz } 780256195Strasz KASSERT(off <= len, ("len > off")); 781256195Strasz copy_len = len - off; 782255570Strasz if (copy_len > cdw->cdw_sg_len) 783255570Strasz copy_len = cdw->cdw_sg_len; 784255570Strasz 785255570Strasz icl_pdu_get_data(request, off, cdw->cdw_sg_addr, copy_len); 786255570Strasz cdw->cdw_sg_addr += copy_len; 787255570Strasz cdw->cdw_sg_len -= copy_len; 788255570Strasz off += copy_len; 789255570Strasz io->scsiio.ext_data_filled += copy_len; 790255570Strasz 791255570Strasz if (cdw->cdw_sg_len == 0) { 792256195Strasz /* 793256195Strasz * End of current segment. 794256195Strasz */ 795256195Strasz if (cdw->cdw_sg_index == ctl_sg_count - 1) { 796256195Strasz /* 797256195Strasz * Last segment in scatter/gather list. 798256195Strasz */ 799255570Strasz break; 800256195Strasz } 801255570Strasz cdw->cdw_sg_index++; 802255570Strasz } 803256195Strasz 804256195Strasz if (off == len) { 805256195Strasz /* 806256195Strasz * End of PDU payload. 807256195Strasz */ 808255570Strasz break; 809256195Strasz } 810255570Strasz } 811255570Strasz 812256195Strasz if (len > off) { 813265640Smav /* 814265640Smav * In case of unsolicited data, it's possible that the buffer 815265640Smav * provided by CTL is smaller than negotiated FirstBurstLength. 816265640Smav * Just ignore the superfluous data; will ask for them with R2T 817265640Smav * on next call to cfiscsi_datamove(). 818265640Smav * 819265640Smav * This obviously can only happen with SCSI Command PDU. 820265640Smav */ 821265640Smav if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 822268141Smav ISCSI_BHS_OPCODE_SCSI_COMMAND) 823265640Smav return (true); 824265640Smav 825255570Strasz CFISCSI_SESSION_WARN(cs, "received too much data: got %zd bytes, " 826265640Smav "expected %zd; dropping connection", 827265640Smav icl_pdu_data_segment_length(request), off); 828265640Smav ctl_set_data_phase_error(&io->scsiio); 829255570Strasz cfiscsi_session_terminate(cs); 830255570Strasz return (true); 831255570Strasz } 832255570Strasz 833265640Smav if (io->scsiio.ext_data_filled == io->scsiio.kern_data_len && 834265640Smav (bhsdo->bhsdo_flags & BHSDO_FLAGS_F) == 0) { 835265640Smav CFISCSI_SESSION_WARN(cs, "got the final packet without " 836265640Smav "the F flag; flags = 0x%x; dropping connection", 837265640Smav bhsdo->bhsdo_flags); 838265640Smav ctl_set_data_phase_error(&io->scsiio); 839265640Smav cfiscsi_session_terminate(cs); 840265640Smav return (true); 841265640Smav } 842265640Smav 843265640Smav if (io->scsiio.ext_data_filled != io->scsiio.kern_data_len && 844265640Smav (bhsdo->bhsdo_flags & BHSDO_FLAGS_F) != 0) { 845265640Smav if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 846265640Smav ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 847265640Smav CFISCSI_SESSION_WARN(cs, "got the final packet, but the " 848265640Smav "transmitted size was %zd bytes instead of %d; " 849265640Smav "dropping connection", 850265640Smav (size_t)io->scsiio.ext_data_filled, 851265640Smav io->scsiio.kern_data_len); 852265640Smav ctl_set_data_phase_error(&io->scsiio); 853255570Strasz cfiscsi_session_terminate(cs); 854255570Strasz return (true); 855265640Smav } else { 856265640Smav /* 857265640Smav * For SCSI Command PDU, this just means we need to 858265640Smav * solicit more data by sending R2T. 859265640Smav */ 860265640Smav return (false); 861255570Strasz } 862265640Smav } 863255570Strasz 864265640Smav if (io->scsiio.ext_data_filled == io->scsiio.kern_data_len) { 865255570Strasz#if 0 866255570Strasz CFISCSI_SESSION_DEBUG(cs, "no longer expecting Data-Out with target " 867255570Strasz "transfer tag 0x%x", cdw->cdw_target_transfer_tag); 868255570Strasz#endif 869255570Strasz 870255570Strasz return (true); 871255570Strasz } 872255570Strasz 873255570Strasz return (false); 874255570Strasz} 875255570Strasz 876255570Straszstatic void 877255570Straszcfiscsi_pdu_handle_data_out(struct icl_pdu *request) 878255570Strasz{ 879255570Strasz struct iscsi_bhs_data_out *bhsdo; 880255570Strasz struct cfiscsi_session *cs; 881255570Strasz struct cfiscsi_data_wait *cdw = NULL; 882255570Strasz union ctl_io *io; 883255570Strasz bool done; 884255570Strasz 885255570Strasz cs = PDU_SESSION(request); 886255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 887255570Strasz 888255570Strasz CFISCSI_SESSION_LOCK(cs); 889255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) { 890255570Strasz#if 0 891255570Strasz CFISCSI_SESSION_DEBUG(cs, "have ttt 0x%x, itt 0x%x; looking for " 892255570Strasz "ttt 0x%x, itt 0x%x", 893255570Strasz bhsdo->bhsdo_target_transfer_tag, 894255570Strasz bhsdo->bhsdo_initiator_task_tag, 895255570Strasz cdw->cdw_target_transfer_tag, cdw->cdw_initiator_task_tag)); 896255570Strasz#endif 897255570Strasz if (bhsdo->bhsdo_target_transfer_tag == 898255570Strasz cdw->cdw_target_transfer_tag) 899255570Strasz break; 900255570Strasz } 901255570Strasz CFISCSI_SESSION_UNLOCK(cs); 902255570Strasz if (cdw == NULL) { 903255570Strasz CFISCSI_SESSION_WARN(cs, "data transfer tag 0x%x, initiator task tag " 904256197Strasz "0x%x, not found; dropping connection", 905256197Strasz bhsdo->bhsdo_target_transfer_tag, bhsdo->bhsdo_initiator_task_tag); 906255570Strasz icl_pdu_free(request); 907255570Strasz cfiscsi_session_terminate(cs); 908255570Strasz return; 909255570Strasz } 910255570Strasz 911255570Strasz io = cdw->cdw_ctl_io; 912255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 913255570Strasz ("CTL_FLAG_DATA_IN")); 914255570Strasz 915255570Strasz done = cfiscsi_handle_data_segment(request, cdw); 916255570Strasz if (done) { 917255570Strasz CFISCSI_SESSION_LOCK(cs); 918255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 919255570Strasz CFISCSI_SESSION_UNLOCK(cs); 920255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 921255570Strasz io->scsiio.be_move_done(io); 922255570Strasz } 923255570Strasz 924255570Strasz icl_pdu_free(request); 925255570Strasz} 926255570Strasz 927255570Straszstatic void 928255570Straszcfiscsi_pdu_handle_logout_request(struct icl_pdu *request) 929255570Strasz{ 930255570Strasz struct iscsi_bhs_logout_request *bhslr; 931255570Strasz struct iscsi_bhs_logout_response *bhslr2; 932255570Strasz struct icl_pdu *response; 933255570Strasz struct cfiscsi_session *cs; 934255570Strasz 935255570Strasz cs = PDU_SESSION(request); 936255570Strasz bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 937255570Strasz switch (bhslr->bhslr_reason & 0x7f) { 938255570Strasz case BHSLR_REASON_CLOSE_SESSION: 939255570Strasz case BHSLR_REASON_CLOSE_CONNECTION: 940255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 941255570Strasz if (response == NULL) { 942256197Strasz CFISCSI_SESSION_DEBUG(cs, "failed to allocate memory"); 943255570Strasz icl_pdu_free(request); 944255570Strasz cfiscsi_session_terminate(cs); 945255570Strasz return; 946255570Strasz } 947255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 948255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 949255570Strasz bhslr2->bhslr_flags = 0x80; 950255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_CLOSED_SUCCESSFULLY; 951255570Strasz bhslr2->bhslr_initiator_task_tag = 952255570Strasz bhslr->bhslr_initiator_task_tag; 953255570Strasz icl_pdu_free(request); 954255570Strasz cfiscsi_pdu_queue(response); 955255570Strasz cfiscsi_session_terminate(cs); 956255570Strasz break; 957255570Strasz case BHSLR_REASON_REMOVE_FOR_RECOVERY: 958255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 959255570Strasz if (response == NULL) { 960256197Strasz CFISCSI_SESSION_WARN(cs, 961256197Strasz "failed to allocate memory; dropping connection"); 962255570Strasz icl_pdu_free(request); 963255570Strasz cfiscsi_session_terminate(cs); 964255570Strasz return; 965255570Strasz } 966255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 967255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 968255570Strasz bhslr2->bhslr_flags = 0x80; 969255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_RECOVERY_NOT_SUPPORTED; 970255570Strasz bhslr2->bhslr_initiator_task_tag = 971255570Strasz bhslr->bhslr_initiator_task_tag; 972255570Strasz icl_pdu_free(request); 973255570Strasz cfiscsi_pdu_queue(response); 974255570Strasz break; 975255570Strasz default: 976255570Strasz CFISCSI_SESSION_WARN(cs, "invalid reason 0%x; dropping connection", 977255570Strasz bhslr->bhslr_reason); 978255570Strasz icl_pdu_free(request); 979255570Strasz cfiscsi_session_terminate(cs); 980255570Strasz break; 981255570Strasz } 982255570Strasz} 983255570Strasz 984255570Straszstatic void 985255570Straszcfiscsi_callout(void *context) 986255570Strasz{ 987255570Strasz struct icl_pdu *cp; 988255570Strasz struct iscsi_bhs_nop_in *bhsni; 989255570Strasz struct cfiscsi_session *cs; 990255570Strasz 991255570Strasz cs = context; 992255570Strasz 993255570Strasz if (cs->cs_terminating) 994255570Strasz return; 995255570Strasz 996255570Strasz callout_schedule(&cs->cs_callout, 1 * hz); 997255570Strasz 998265497Strasz atomic_add_int(&cs->cs_timeout, 1); 999255570Strasz 1000255570Strasz#ifdef ICL_KERNEL_PROXY 1001255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 1002255570Strasz if (cs->cs_timeout > login_timeout) { 1003255570Strasz CFISCSI_SESSION_WARN(cs, "login timed out after " 1004255570Strasz "%d seconds; dropping connection", cs->cs_timeout); 1005255570Strasz cfiscsi_session_terminate(cs); 1006255570Strasz } 1007255570Strasz return; 1008255570Strasz } 1009255570Strasz#endif 1010255570Strasz 1011255570Strasz if (cs->cs_timeout >= ping_timeout) { 1012255570Strasz CFISCSI_SESSION_WARN(cs, "no ping reply (NOP-Out) after %d seconds; " 1013255570Strasz "dropping connection", ping_timeout); 1014255570Strasz cfiscsi_session_terminate(cs); 1015255570Strasz return; 1016255570Strasz } 1017255570Strasz 1018255570Strasz /* 1019255570Strasz * If the ping was reset less than one second ago - which means 1020255570Strasz * that we've received some PDU during the last second - assume 1021255570Strasz * the traffic flows correctly and don't bother sending a NOP-Out. 1022255570Strasz * 1023255570Strasz * (It's 2 - one for one second, and one for incrementing is_timeout 1024255570Strasz * earlier in this routine.) 1025255570Strasz */ 1026255570Strasz if (cs->cs_timeout < 2) 1027255570Strasz return; 1028255570Strasz 1029255824Strasz cp = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1030255824Strasz if (cp == NULL) { 1031256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory"); 1032255824Strasz return; 1033255824Strasz } 1034255570Strasz bhsni = (struct iscsi_bhs_nop_in *)cp->ip_bhs; 1035255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 1036255570Strasz bhsni->bhsni_flags = 0x80; 1037255570Strasz bhsni->bhsni_initiator_task_tag = 0xffffffff; 1038255570Strasz 1039255570Strasz cfiscsi_pdu_queue(cp); 1040255570Strasz} 1041255570Strasz 1042255570Straszstatic void 1043255570Straszcfiscsi_session_terminate_tasks(struct cfiscsi_session *cs) 1044255570Strasz{ 1045255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 1046255570Strasz union ctl_io *io; 1047268259Smav int error, last; 1048255570Strasz 1049255570Strasz#ifdef notyet 1050255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 1051255570Strasz if (io == NULL) { 1052255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 1053255570Strasz return; 1054255570Strasz } 1055255570Strasz ctl_zero_io(io); 1056255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 1057255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1058255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1059255570Strasz io->io_hdr.nexus.targ_port = 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; 1062255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1063255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK_SET; 1064255570Strasz error = ctl_queue(io); 1065255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1066255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1067255570Strasz ctl_free_io(io); 1068255570Strasz } 1069255570Strasz#else 1070255570Strasz /* 1071255570Strasz * CTL doesn't currently support CTL_TASK_ABORT_TASK_SET, so instead 1072255570Strasz * just iterate over tasks that are waiting for something - data - and 1073255570Strasz * terminate those. 1074255570Strasz */ 1075255570Strasz CFISCSI_SESSION_LOCK(cs); 1076255570Strasz TAILQ_FOREACH_SAFE(cdw, 1077255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 1078255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 1079255570Strasz if (io == NULL) { 1080255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 1081255570Strasz return; 1082255570Strasz } 1083255570Strasz ctl_zero_io(io); 1084255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 1085255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1086255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1087255570Strasz io->io_hdr.nexus.targ_port = 1088255570Strasz cs->cs_target->ct_softc->fe.targ_port; 1089255570Strasz io->io_hdr.nexus.targ_target.id = 0; 1090255570Strasz //io->io_hdr.nexus.targ_lun = lun; /* Not needed? */ 1091255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1092255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 1093255570Strasz io->taskio.tag_num = cdw->cdw_initiator_task_tag; 1094255570Strasz error = ctl_queue(io); 1095255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1096255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1097255570Strasz ctl_free_io(io); 1098255570Strasz return; 1099255570Strasz } 1100255570Strasz#if 0 1101255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task tag " 1102255570Strasz "0x%x", cdw->cdw_initiator_task_tag); 1103255570Strasz#endif 1104268259Smav /* 1105268259Smav * Set nonzero port status; this prevents backends from 1106268259Smav * assuming that the data transfer actually succeeded 1107268259Smav * and writing uninitialized data to disk. 1108268259Smav */ 1109268259Smav cdw->cdw_ctl_io->scsiio.io_hdr.port_status = 42; 1110255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 1111255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 1112255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 1113255570Strasz } 1114255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1115255570Strasz#endif 1116268259Smav 1117268259Smav /* 1118268259Smav * Wait for CTL to terminate all the tasks. 1119268259Smav */ 1120268259Smav for (;;) { 1121268259Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1122268259Smav last = refcount_release(&cs->cs_outstanding_ctl_pdus); 1123268259Smav if (last != 0) 1124268259Smav break; 1125268259Smav CFISCSI_SESSION_WARN(cs, "waiting for CTL to terminate tasks, " 1126268259Smav "%d remaining", cs->cs_outstanding_ctl_pdus); 1127268259Smav pause("cfiscsi_terminate", 1); 1128268259Smav } 1129255570Strasz} 1130255570Strasz 1131255570Straszstatic void 1132255570Straszcfiscsi_maintenance_thread(void *arg) 1133255570Strasz{ 1134255570Strasz struct cfiscsi_session *cs; 1135255570Strasz 1136255570Strasz cs = arg; 1137255570Strasz 1138255570Strasz for (;;) { 1139255570Strasz CFISCSI_SESSION_LOCK(cs); 1140255570Strasz if (cs->cs_terminating == false) 1141255570Strasz cv_wait(&cs->cs_maintenance_cv, &cs->cs_lock); 1142255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1143255570Strasz 1144255570Strasz if (cs->cs_terminating) { 1145268259Smav 1146268259Smav /* 1147268259Smav * We used to wait up to 30 seconds to deliver queued 1148268259Smav * PDUs to the initiator. We also tried hard to deliver 1149268259Smav * SCSI Responses for the aborted PDUs. We don't do 1150268259Smav * that anymore. We might need to revisit that. 1151268259Smav */ 1152255570Strasz callout_drain(&cs->cs_callout); 1153255570Strasz icl_conn_shutdown(cs->cs_conn); 1154255570Strasz icl_conn_close(cs->cs_conn); 1155255570Strasz 1156255570Strasz /* 1157268259Smav * At this point ICL receive thread is no longer 1158268259Smav * running; no new tasks can be queued. 1159255570Strasz */ 1160268259Smav cfiscsi_session_terminate_tasks(cs); 1161255570Strasz cfiscsi_session_delete(cs); 1162255570Strasz kthread_exit(); 1163255570Strasz return; 1164255570Strasz } 1165255570Strasz CFISCSI_SESSION_DEBUG(cs, "nothing to do"); 1166255570Strasz } 1167255570Strasz} 1168255570Strasz 1169255570Straszstatic void 1170255570Straszcfiscsi_session_terminate(struct cfiscsi_session *cs) 1171255570Strasz{ 1172255570Strasz 1173268258Smav if (cs->cs_terminating) 1174255570Strasz return; 1175268258Smav cs->cs_terminating = true; 1176255570Strasz cv_signal(&cs->cs_maintenance_cv); 1177265510Strasz#ifdef ICL_KERNEL_PROXY 1178265510Strasz cv_signal(&cs->cs_login_cv); 1179265510Strasz#endif 1180255570Strasz} 1181255570Strasz 1182255570Straszstatic int 1183255570Straszcfiscsi_session_register_initiator(struct cfiscsi_session *cs) 1184255570Strasz{ 1185255570Strasz int error, i; 1186255570Strasz struct cfiscsi_softc *softc; 1187255570Strasz 1188255570Strasz KASSERT(cs->cs_ctl_initid == -1, ("already registered")); 1189255570Strasz 1190255570Strasz softc = &cfiscsi_softc; 1191255570Strasz 1192255570Strasz mtx_lock(&softc->lock); 1193255570Strasz for (i = 0; i < softc->max_initiators; i++) { 1194255570Strasz if (softc->ctl_initids[i] == 0) 1195255570Strasz break; 1196255570Strasz } 1197255570Strasz if (i == softc->max_initiators) { 1198255570Strasz CFISCSI_SESSION_WARN(cs, "too many concurrent sessions (%d)", 1199255570Strasz softc->max_initiators); 1200255570Strasz mtx_unlock(&softc->lock); 1201255570Strasz return (1); 1202255570Strasz } 1203255570Strasz softc->ctl_initids[i] = 1; 1204255570Strasz mtx_unlock(&softc->lock); 1205255570Strasz 1206255570Strasz#if 0 1207255570Strasz CFISCSI_SESSION_DEBUG(cs, "adding initiator id %d, max %d", 1208255570Strasz i, softc->max_initiators); 1209255570Strasz#endif 1210255570Strasz cs->cs_ctl_initid = i; 1211255570Strasz error = ctl_add_initiator(0x0, softc->fe.targ_port, cs->cs_ctl_initid); 1212255570Strasz if (error != 0) { 1213255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_add_initiator failed with error %d", error); 1214255570Strasz mtx_lock(&softc->lock); 1215255570Strasz softc->ctl_initids[cs->cs_ctl_initid] = 0; 1216255570Strasz mtx_unlock(&softc->lock); 1217255570Strasz cs->cs_ctl_initid = -1; 1218255570Strasz return (1); 1219255570Strasz } 1220255570Strasz 1221255570Strasz return (0); 1222255570Strasz} 1223255570Strasz 1224255570Straszstatic void 1225255570Straszcfiscsi_session_unregister_initiator(struct cfiscsi_session *cs) 1226255570Strasz{ 1227255570Strasz int error; 1228255570Strasz struct cfiscsi_softc *softc; 1229255570Strasz 1230255570Strasz if (cs->cs_ctl_initid == -1) 1231255570Strasz return; 1232255570Strasz 1233255570Strasz softc = &cfiscsi_softc; 1234255570Strasz 1235255570Strasz error = ctl_remove_initiator(softc->fe.targ_port, cs->cs_ctl_initid); 1236255570Strasz if (error != 0) { 1237255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_remove_initiator failed with error %d", 1238255570Strasz error); 1239255570Strasz } 1240255570Strasz mtx_lock(&softc->lock); 1241255570Strasz softc->ctl_initids[cs->cs_ctl_initid] = 0; 1242255570Strasz mtx_unlock(&softc->lock); 1243255570Strasz cs->cs_ctl_initid = -1; 1244255570Strasz} 1245255570Strasz 1246255570Straszstatic struct cfiscsi_session * 1247255570Straszcfiscsi_session_new(struct cfiscsi_softc *softc) 1248255570Strasz{ 1249255570Strasz struct cfiscsi_session *cs; 1250255570Strasz int error; 1251255570Strasz 1252255570Strasz cs = malloc(sizeof(*cs), M_CFISCSI, M_NOWAIT | M_ZERO); 1253255570Strasz if (cs == NULL) { 1254255570Strasz CFISCSI_WARN("malloc failed"); 1255255570Strasz return (NULL); 1256255570Strasz } 1257255570Strasz cs->cs_ctl_initid = -1; 1258255570Strasz 1259255570Strasz refcount_init(&cs->cs_outstanding_ctl_pdus, 0); 1260255570Strasz TAILQ_INIT(&cs->cs_waiting_for_data_out); 1261255570Strasz mtx_init(&cs->cs_lock, "cfiscsi_lock", NULL, MTX_DEF); 1262255570Strasz cv_init(&cs->cs_maintenance_cv, "cfiscsi_mt"); 1263255570Strasz#ifdef ICL_KERNEL_PROXY 1264255570Strasz cv_init(&cs->cs_login_cv, "cfiscsi_login"); 1265255570Strasz#endif 1266255570Strasz 1267265496Strasz cs->cs_conn = icl_conn_new("cfiscsi", &cs->cs_lock); 1268255570Strasz cs->cs_conn->ic_receive = cfiscsi_receive_callback; 1269255570Strasz cs->cs_conn->ic_error = cfiscsi_error_callback; 1270255570Strasz cs->cs_conn->ic_prv0 = cs; 1271255570Strasz 1272255570Strasz error = kthread_add(cfiscsi_maintenance_thread, cs, NULL, NULL, 0, 0, "cfiscsimt"); 1273255570Strasz if (error != 0) { 1274255570Strasz CFISCSI_SESSION_WARN(cs, "kthread_add(9) failed with error %d", error); 1275255570Strasz free(cs, M_CFISCSI); 1276255570Strasz return (NULL); 1277255570Strasz } 1278255570Strasz 1279255570Strasz mtx_lock(&softc->lock); 1280255570Strasz cs->cs_id = softc->last_session_id + 1; 1281255570Strasz softc->last_session_id++; 1282255570Strasz mtx_unlock(&softc->lock); 1283255570Strasz 1284255570Strasz mtx_lock(&softc->lock); 1285255570Strasz TAILQ_INSERT_TAIL(&softc->sessions, cs, cs_next); 1286255570Strasz mtx_unlock(&softc->lock); 1287255570Strasz 1288255570Strasz /* 1289255570Strasz * Start pinging the initiator. 1290255570Strasz */ 1291255570Strasz callout_init(&cs->cs_callout, 1); 1292255570Strasz callout_reset(&cs->cs_callout, 1 * hz, cfiscsi_callout, cs); 1293255570Strasz 1294255570Strasz return (cs); 1295255570Strasz} 1296255570Strasz 1297255570Straszstatic void 1298255570Straszcfiscsi_session_delete(struct cfiscsi_session *cs) 1299255570Strasz{ 1300255570Strasz struct cfiscsi_softc *softc; 1301255570Strasz 1302255570Strasz softc = &cfiscsi_softc; 1303255570Strasz 1304255570Strasz KASSERT(cs->cs_outstanding_ctl_pdus == 0, 1305255570Strasz ("destroying session with outstanding CTL pdus")); 1306255570Strasz KASSERT(TAILQ_EMPTY(&cs->cs_waiting_for_data_out), 1307255570Strasz ("destroying session with non-empty queue")); 1308255570Strasz 1309255570Strasz cfiscsi_session_unregister_initiator(cs); 1310255570Strasz if (cs->cs_target != NULL) 1311255570Strasz cfiscsi_target_release(cs->cs_target); 1312255570Strasz icl_conn_close(cs->cs_conn); 1313255570Strasz icl_conn_free(cs->cs_conn); 1314255570Strasz 1315255570Strasz mtx_lock(&softc->lock); 1316255570Strasz TAILQ_REMOVE(&softc->sessions, cs, cs_next); 1317255570Strasz mtx_unlock(&softc->lock); 1318255570Strasz 1319255570Strasz free(cs, M_CFISCSI); 1320255570Strasz} 1321255570Strasz 1322255570Straszint 1323255570Straszcfiscsi_init(void) 1324255570Strasz{ 1325255570Strasz struct cfiscsi_softc *softc; 1326255570Strasz struct ctl_frontend *fe; 1327255570Strasz int retval; 1328255570Strasz 1329255570Strasz softc = &cfiscsi_softc; 1330255570Strasz retval = 0; 1331255570Strasz bzero(softc, sizeof(*softc)); 1332255570Strasz mtx_init(&softc->lock, "cfiscsi", NULL, MTX_DEF); 1333255570Strasz 1334255570Strasz#ifdef ICL_KERNEL_PROXY 1335255570Strasz cv_init(&softc->accept_cv, "cfiscsi_accept"); 1336255570Strasz#endif 1337255570Strasz TAILQ_INIT(&softc->sessions); 1338255570Strasz TAILQ_INIT(&softc->targets); 1339255570Strasz 1340255570Strasz fe = &softc->fe; 1341255570Strasz fe->port_type = CTL_PORT_ISCSI; 1342255570Strasz /* XXX KDM what should the real number be here? */ 1343255570Strasz fe->num_requested_ctl_io = 4096; 1344255570Strasz snprintf(softc->port_name, sizeof(softc->port_name), "iscsi"); 1345255570Strasz fe->port_name = softc->port_name; 1346255570Strasz fe->port_online = cfiscsi_online; 1347255570Strasz fe->port_offline = cfiscsi_offline; 1348255570Strasz fe->onoff_arg = softc; 1349255570Strasz fe->targ_enable = cfiscsi_targ_enable; 1350255570Strasz fe->targ_disable = cfiscsi_targ_disable; 1351255570Strasz fe->lun_enable = cfiscsi_lun_enable; 1352255570Strasz fe->lun_disable = cfiscsi_lun_disable; 1353255570Strasz fe->targ_lun_arg = softc; 1354255570Strasz fe->ioctl = cfiscsi_ioctl; 1355255570Strasz fe->devid = cfiscsi_devid; 1356255570Strasz fe->fe_datamove = cfiscsi_datamove; 1357255570Strasz fe->fe_done = cfiscsi_done; 1358255570Strasz 1359255570Strasz /* XXX KDM what should we report here? */ 1360255570Strasz /* XXX These should probably be fetched from CTL. */ 1361255570Strasz fe->max_targets = 1; 1362255570Strasz fe->max_target_id = 15; 1363255570Strasz 1364255570Strasz retval = ctl_frontend_register(fe, /*master_SC*/ 1); 1365255570Strasz if (retval != 0) { 1366255570Strasz CFISCSI_WARN("ctl_frontend_register() failed with error %d", 1367255570Strasz retval); 1368255570Strasz retval = 1; 1369255570Strasz goto bailout; 1370255570Strasz } 1371255570Strasz 1372255570Strasz softc->max_initiators = fe->max_initiators; 1373255570Strasz 1374255570Strasz cfiscsi_data_wait_zone = uma_zcreate("cfiscsi_data_wait", 1375255570Strasz sizeof(struct cfiscsi_data_wait), NULL, NULL, NULL, NULL, 1376256058Strasz UMA_ALIGN_PTR, 0); 1377255570Strasz 1378255570Strasz return (0); 1379255570Strasz 1380255570Straszbailout: 1381255570Strasz return (retval); 1382255570Strasz} 1383255570Strasz 1384255570Straszstatic int 1385255570Straszcfiscsi_module_event_handler(module_t mod, int what, void *arg) 1386255570Strasz{ 1387255570Strasz 1388255570Strasz switch (what) { 1389255570Strasz case MOD_LOAD: 1390255570Strasz return (cfiscsi_init()); 1391255570Strasz case MOD_UNLOAD: 1392255570Strasz return (EBUSY); 1393255570Strasz default: 1394255570Strasz return (EOPNOTSUPP); 1395255570Strasz } 1396255570Strasz} 1397255570Strasz 1398255570Strasz#ifdef ICL_KERNEL_PROXY 1399255570Straszstatic void 1400265513Straszcfiscsi_accept(struct socket *so, struct sockaddr *sa, int portal_id) 1401255570Strasz{ 1402255570Strasz struct cfiscsi_session *cs; 1403255570Strasz 1404255570Strasz cs = cfiscsi_session_new(&cfiscsi_softc); 1405255570Strasz if (cs == NULL) { 1406255570Strasz CFISCSI_WARN("failed to create session"); 1407255570Strasz return; 1408255570Strasz } 1409255570Strasz 1410255570Strasz icl_conn_handoff_sock(cs->cs_conn, so); 1411265513Strasz cs->cs_initiator_sa = sa; 1412265509Strasz cs->cs_portal_id = portal_id; 1413255570Strasz cs->cs_waiting_for_ctld = true; 1414255570Strasz cv_signal(&cfiscsi_softc.accept_cv); 1415255570Strasz} 1416255570Strasz#endif 1417255570Strasz 1418255570Straszstatic void 1419255570Straszcfiscsi_online(void *arg) 1420255570Strasz{ 1421255570Strasz struct cfiscsi_softc *softc; 1422255570Strasz 1423255570Strasz softc = (struct cfiscsi_softc *)arg; 1424255570Strasz 1425255570Strasz softc->online = 1; 1426255570Strasz#ifdef ICL_KERNEL_PROXY 1427255570Strasz if (softc->listener != NULL) 1428255570Strasz icl_listen_free(softc->listener); 1429255570Strasz softc->listener = icl_listen_new(cfiscsi_accept); 1430255570Strasz#endif 1431255570Strasz} 1432255570Strasz 1433255570Straszstatic void 1434255570Straszcfiscsi_offline(void *arg) 1435255570Strasz{ 1436255570Strasz struct cfiscsi_softc *softc; 1437255570Strasz struct cfiscsi_session *cs; 1438255570Strasz 1439255570Strasz softc = (struct cfiscsi_softc *)arg; 1440255570Strasz 1441255570Strasz softc->online = 0; 1442255570Strasz 1443255570Strasz mtx_lock(&softc->lock); 1444255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) 1445255570Strasz cfiscsi_session_terminate(cs); 1446255570Strasz mtx_unlock(&softc->lock); 1447255570Strasz 1448255570Strasz#ifdef ICL_KERNEL_PROXY 1449255570Strasz icl_listen_free(softc->listener); 1450255570Strasz softc->listener = NULL; 1451255570Strasz#endif 1452255570Strasz} 1453255570Strasz 1454255570Straszstatic int 1455255570Straszcfiscsi_targ_enable(void *arg, struct ctl_id targ_id) 1456255570Strasz{ 1457255570Strasz 1458255570Strasz return (0); 1459255570Strasz} 1460255570Strasz 1461255570Straszstatic int 1462255570Straszcfiscsi_targ_disable(void *arg, struct ctl_id targ_id) 1463255570Strasz{ 1464255570Strasz 1465255570Strasz return (0); 1466255570Strasz} 1467255570Strasz 1468255570Straszstatic void 1469255570Straszcfiscsi_ioctl_handoff(struct ctl_iscsi *ci) 1470255570Strasz{ 1471255570Strasz struct cfiscsi_softc *softc; 1472255570Strasz struct cfiscsi_session *cs; 1473255570Strasz struct cfiscsi_target *ct; 1474255570Strasz struct ctl_iscsi_handoff_params *cihp; 1475255570Strasz int error; 1476255570Strasz 1477255570Strasz cihp = (struct ctl_iscsi_handoff_params *)&(ci->data); 1478255570Strasz softc = &cfiscsi_softc; 1479255570Strasz 1480255570Strasz CFISCSI_DEBUG("new connection from %s (%s) to %s", 1481255570Strasz cihp->initiator_name, cihp->initiator_addr, 1482255570Strasz cihp->target_name); 1483255570Strasz 1484255570Strasz if (softc->online == 0) { 1485255570Strasz ci->status = CTL_ISCSI_ERROR; 1486255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1487255570Strasz "%s: port offline", __func__); 1488255570Strasz return; 1489255570Strasz } 1490255570Strasz 1491255570Strasz ct = cfiscsi_target_find(softc, cihp->target_name); 1492255570Strasz if (ct == NULL) { 1493255570Strasz ci->status = CTL_ISCSI_ERROR; 1494255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1495255570Strasz "%s: target not found", __func__); 1496255570Strasz return; 1497255570Strasz } 1498255570Strasz 1499255570Strasz#ifdef ICL_KERNEL_PROXY 1500265507Strasz if (cihp->socket > 0 && cihp->connection_id > 0) { 1501265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1502265507Strasz "both socket and connection_id set"); 1503255570Strasz ci->status = CTL_ISCSI_ERROR; 1504264523Smav cfiscsi_target_release(ct); 1505255570Strasz return; 1506255570Strasz } 1507265507Strasz if (cihp->socket == 0) { 1508265507Strasz mtx_lock(&cfiscsi_softc.lock); 1509265507Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1510265507Strasz if (cs->cs_id == cihp->socket) 1511265507Strasz break; 1512265507Strasz } 1513265507Strasz if (cs == NULL) { 1514265507Strasz mtx_unlock(&cfiscsi_softc.lock); 1515265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1516265507Strasz "connection not found"); 1517265507Strasz ci->status = CTL_ISCSI_ERROR; 1518265507Strasz cfiscsi_target_release(ct); 1519265507Strasz return; 1520265507Strasz } 1521265507Strasz mtx_unlock(&cfiscsi_softc.lock); 1522265507Strasz } else { 1523265507Strasz#endif 1524265507Strasz cs = cfiscsi_session_new(softc); 1525265507Strasz if (cs == NULL) { 1526265507Strasz ci->status = CTL_ISCSI_ERROR; 1527265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1528265507Strasz "%s: cfiscsi_session_new failed", __func__); 1529265507Strasz cfiscsi_target_release(ct); 1530265507Strasz return; 1531265507Strasz } 1532265507Strasz#ifdef ICL_KERNEL_PROXY 1533255570Strasz } 1534255570Strasz#endif 1535255570Strasz cs->cs_target = ct; 1536255570Strasz 1537255570Strasz /* 1538255570Strasz * First PDU of Full Feature phase has the same CmdSN as the last 1539255570Strasz * PDU from the Login Phase received from the initiator. Thus, 1540255570Strasz * the -1 below. 1541255570Strasz */ 1542255570Strasz cs->cs_portal_group_tag = cihp->portal_group_tag; 1543255570Strasz cs->cs_cmdsn = cihp->cmdsn; 1544255570Strasz cs->cs_statsn = cihp->statsn; 1545255570Strasz cs->cs_max_data_segment_length = cihp->max_recv_data_segment_length; 1546255570Strasz cs->cs_max_burst_length = cihp->max_burst_length; 1547255570Strasz cs->cs_immediate_data = !!cihp->immediate_data; 1548255570Strasz if (cihp->header_digest == CTL_ISCSI_DIGEST_CRC32C) 1549255570Strasz cs->cs_conn->ic_header_crc32c = true; 1550255570Strasz if (cihp->data_digest == CTL_ISCSI_DIGEST_CRC32C) 1551255570Strasz cs->cs_conn->ic_data_crc32c = true; 1552255570Strasz 1553255570Strasz strlcpy(cs->cs_initiator_name, 1554255570Strasz cihp->initiator_name, sizeof(cs->cs_initiator_name)); 1555255570Strasz strlcpy(cs->cs_initiator_addr, 1556255570Strasz cihp->initiator_addr, sizeof(cs->cs_initiator_addr)); 1557255570Strasz strlcpy(cs->cs_initiator_alias, 1558255570Strasz cihp->initiator_alias, sizeof(cs->cs_initiator_alias)); 1559255570Strasz 1560255570Strasz#ifdef ICL_KERNEL_PROXY 1561265507Strasz if (cihp->socket > 0) { 1562265507Strasz#endif 1563265507Strasz error = icl_conn_handoff(cs->cs_conn, cihp->socket); 1564265507Strasz if (error != 0) { 1565265507Strasz cfiscsi_session_delete(cs); 1566265507Strasz ci->status = CTL_ISCSI_ERROR; 1567265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1568265507Strasz "%s: icl_conn_handoff failed with error %d", 1569265507Strasz __func__, error); 1570265507Strasz return; 1571265507Strasz } 1572265507Strasz#ifdef ICL_KERNEL_PROXY 1573255570Strasz } 1574255570Strasz#endif 1575255570Strasz 1576255570Strasz /* 1577255570Strasz * Register initiator with CTL. 1578255570Strasz */ 1579255570Strasz cfiscsi_session_register_initiator(cs); 1580255570Strasz 1581255570Strasz#ifdef ICL_KERNEL_PROXY 1582265507Strasz cs->cs_login_phase = false; 1583265507Strasz 1584255570Strasz /* 1585255570Strasz * First PDU of the Full Feature phase has likely already arrived. 1586255570Strasz * We have to pick it up and execute properly. 1587255570Strasz */ 1588255570Strasz if (cs->cs_login_pdu != NULL) { 1589255570Strasz CFISCSI_SESSION_DEBUG(cs, "picking up first PDU"); 1590255570Strasz cfiscsi_pdu_handle(cs->cs_login_pdu); 1591255570Strasz cs->cs_login_pdu = NULL; 1592255570Strasz } 1593255570Strasz#endif 1594255570Strasz 1595255570Strasz ci->status = CTL_ISCSI_OK; 1596255570Strasz} 1597255570Strasz 1598255570Straszstatic void 1599255570Straszcfiscsi_ioctl_list(struct ctl_iscsi *ci) 1600255570Strasz{ 1601255570Strasz struct ctl_iscsi_list_params *cilp; 1602255570Strasz struct cfiscsi_session *cs; 1603255570Strasz struct cfiscsi_softc *softc; 1604255570Strasz struct sbuf *sb; 1605255570Strasz int error; 1606255570Strasz 1607255570Strasz cilp = (struct ctl_iscsi_list_params *)&(ci->data); 1608255570Strasz softc = &cfiscsi_softc; 1609255570Strasz 1610255570Strasz sb = sbuf_new(NULL, NULL, cilp->alloc_len, SBUF_FIXEDLEN); 1611255570Strasz if (sb == NULL) { 1612255570Strasz ci->status = CTL_ISCSI_ERROR; 1613255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1614255570Strasz "Unable to allocate %d bytes for iSCSI session list", 1615255570Strasz cilp->alloc_len); 1616255570Strasz return; 1617255570Strasz } 1618255570Strasz 1619255570Strasz sbuf_printf(sb, "<ctlislist>\n"); 1620255570Strasz mtx_lock(&softc->lock); 1621255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1622255570Strasz#ifdef ICL_KERNEL_PROXY 1623255570Strasz if (cs->cs_target == NULL) 1624255570Strasz continue; 1625255570Strasz#endif 1626255570Strasz error = sbuf_printf(sb, "<connection id=\"%d\">" 1627255570Strasz "<initiator>%s</initiator>" 1628255570Strasz "<initiator_addr>%s</initiator_addr>" 1629255570Strasz "<initiator_alias>%s</initiator_alias>" 1630255570Strasz "<target>%s</target>" 1631255570Strasz "<target_alias>%s</target_alias>" 1632255570Strasz "<header_digest>%s</header_digest>" 1633255570Strasz "<data_digest>%s</data_digest>" 1634255570Strasz "<max_data_segment_length>%zd</max_data_segment_length>" 1635255570Strasz "<immediate_data>%d</immediate_data>" 1636255570Strasz "<iser>%d</iser>" 1637255570Strasz "</connection>\n", 1638255570Strasz cs->cs_id, 1639255570Strasz cs->cs_initiator_name, cs->cs_initiator_addr, cs->cs_initiator_alias, 1640255570Strasz cs->cs_target->ct_name, cs->cs_target->ct_alias, 1641255570Strasz cs->cs_conn->ic_header_crc32c ? "CRC32C" : "None", 1642255570Strasz cs->cs_conn->ic_data_crc32c ? "CRC32C" : "None", 1643255570Strasz cs->cs_max_data_segment_length, 1644255570Strasz cs->cs_immediate_data, 1645255570Strasz cs->cs_conn->ic_iser); 1646255570Strasz if (error != 0) 1647255570Strasz break; 1648255570Strasz } 1649255570Strasz mtx_unlock(&softc->lock); 1650255570Strasz error = sbuf_printf(sb, "</ctlislist>\n"); 1651255570Strasz if (error != 0) { 1652255570Strasz sbuf_delete(sb); 1653255570Strasz ci->status = CTL_ISCSI_LIST_NEED_MORE_SPACE; 1654255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1655255570Strasz "Out of space, %d bytes is too small", cilp->alloc_len); 1656255570Strasz return; 1657255570Strasz } 1658255570Strasz sbuf_finish(sb); 1659255570Strasz 1660255570Strasz error = copyout(sbuf_data(sb), cilp->conn_xml, sbuf_len(sb) + 1); 1661255570Strasz cilp->fill_len = sbuf_len(sb) + 1; 1662255570Strasz ci->status = CTL_ISCSI_OK; 1663255570Strasz sbuf_delete(sb); 1664255570Strasz} 1665255570Strasz 1666255570Straszstatic void 1667255570Straszcfiscsi_ioctl_terminate(struct ctl_iscsi *ci) 1668255570Strasz{ 1669255570Strasz struct icl_pdu *response; 1670255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1671255570Strasz struct ctl_iscsi_terminate_params *citp; 1672255570Strasz struct cfiscsi_session *cs; 1673255570Strasz struct cfiscsi_softc *softc; 1674255570Strasz int found = 0; 1675255570Strasz 1676255570Strasz citp = (struct ctl_iscsi_terminate_params *)&(ci->data); 1677255570Strasz softc = &cfiscsi_softc; 1678255570Strasz 1679255570Strasz mtx_lock(&softc->lock); 1680255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1681255570Strasz if (citp->all == 0 && cs->cs_id != citp->connection_id && 1682255570Strasz strcmp(cs->cs_initiator_name, citp->initiator_name) != 0 && 1683255570Strasz strcmp(cs->cs_initiator_addr, citp->initiator_addr) != 0) 1684255570Strasz continue; 1685255570Strasz 1686255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1687255570Strasz if (response == NULL) { 1688255570Strasz /* 1689255570Strasz * Oh well. Just terminate the connection. 1690255570Strasz */ 1691255570Strasz } else { 1692255570Strasz bhsam = (struct iscsi_bhs_asynchronous_message *) 1693255570Strasz response->ip_bhs; 1694255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1695255570Strasz bhsam->bhsam_flags = 0x80; 1696255570Strasz bhsam->bhsam_0xffffffff = 0xffffffff; 1697255570Strasz bhsam->bhsam_async_event = 1698255570Strasz BHSAM_EVENT_TARGET_TERMINATES_SESSION; 1699255570Strasz cfiscsi_pdu_queue(response); 1700255570Strasz } 1701255570Strasz cfiscsi_session_terminate(cs); 1702255570Strasz found++; 1703255570Strasz } 1704255570Strasz mtx_unlock(&softc->lock); 1705255570Strasz 1706255570Strasz if (found == 0) { 1707255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1708255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1709255570Strasz "No matching connections found"); 1710255570Strasz return; 1711255570Strasz } 1712255570Strasz 1713255570Strasz ci->status = CTL_ISCSI_OK; 1714255570Strasz} 1715255570Strasz 1716255570Straszstatic void 1717255570Straszcfiscsi_ioctl_logout(struct ctl_iscsi *ci) 1718255570Strasz{ 1719255570Strasz struct icl_pdu *response; 1720255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1721255570Strasz struct ctl_iscsi_logout_params *cilp; 1722255570Strasz struct cfiscsi_session *cs; 1723255570Strasz struct cfiscsi_softc *softc; 1724255570Strasz int found = 0; 1725255570Strasz 1726255570Strasz cilp = (struct ctl_iscsi_logout_params *)&(ci->data); 1727255570Strasz softc = &cfiscsi_softc; 1728255570Strasz 1729255570Strasz mtx_lock(&softc->lock); 1730255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1731255570Strasz if (cilp->all == 0 && cs->cs_id != cilp->connection_id && 1732255570Strasz strcmp(cs->cs_initiator_name, cilp->initiator_name) != 0 && 1733255570Strasz strcmp(cs->cs_initiator_addr, cilp->initiator_addr) != 0) 1734255570Strasz continue; 1735255570Strasz 1736255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1737255570Strasz if (response == NULL) { 1738255570Strasz ci->status = CTL_ISCSI_ERROR; 1739255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1740255570Strasz "Unable to allocate memory"); 1741255570Strasz mtx_unlock(&softc->lock); 1742255570Strasz return; 1743255570Strasz } 1744255570Strasz bhsam = 1745255570Strasz (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1746255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1747255570Strasz bhsam->bhsam_flags = 0x80; 1748255570Strasz bhsam->bhsam_async_event = BHSAM_EVENT_TARGET_REQUESTS_LOGOUT; 1749255570Strasz bhsam->bhsam_parameter3 = htons(10); 1750255570Strasz cfiscsi_pdu_queue(response); 1751255570Strasz found++; 1752255570Strasz } 1753255570Strasz mtx_unlock(&softc->lock); 1754255570Strasz 1755255570Strasz if (found == 0) { 1756255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1757255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1758255570Strasz "No matching connections found"); 1759255570Strasz return; 1760255570Strasz } 1761255570Strasz 1762255570Strasz ci->status = CTL_ISCSI_OK; 1763255570Strasz} 1764255570Strasz 1765255570Strasz#ifdef ICL_KERNEL_PROXY 1766255570Straszstatic void 1767255570Straszcfiscsi_ioctl_listen(struct ctl_iscsi *ci) 1768255570Strasz{ 1769255570Strasz struct ctl_iscsi_listen_params *cilp; 1770255570Strasz struct sockaddr *sa; 1771255570Strasz int error; 1772255570Strasz 1773255570Strasz cilp = (struct ctl_iscsi_listen_params *)&(ci->data); 1774255570Strasz 1775255570Strasz if (cfiscsi_softc.listener == NULL) { 1776255570Strasz CFISCSI_DEBUG("no listener"); 1777255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "no listener"); 1778255570Strasz ci->status = CTL_ISCSI_ERROR; 1779255570Strasz return; 1780255570Strasz } 1781255570Strasz 1782255570Strasz error = getsockaddr(&sa, (void *)cilp->addr, cilp->addrlen); 1783255570Strasz if (error != 0) { 1784255570Strasz CFISCSI_DEBUG("getsockaddr, error %d", error); 1785255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "getsockaddr failed"); 1786255570Strasz ci->status = CTL_ISCSI_ERROR; 1787255570Strasz return; 1788255570Strasz } 1789255570Strasz 1790255570Strasz error = icl_listen_add(cfiscsi_softc.listener, cilp->iser, cilp->domain, 1791265509Strasz cilp->socktype, cilp->protocol, sa, cilp->portal_id); 1792255570Strasz if (error != 0) { 1793255570Strasz free(sa, M_SONAME); 1794255570Strasz CFISCSI_DEBUG("icl_listen_add, error %d", error); 1795255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1796255570Strasz "icl_listen_add failed, error %d", error); 1797255570Strasz ci->status = CTL_ISCSI_ERROR; 1798255570Strasz return; 1799255570Strasz } 1800255570Strasz 1801255570Strasz ci->status = CTL_ISCSI_OK; 1802255570Strasz} 1803255570Strasz 1804255570Straszstatic void 1805255570Straszcfiscsi_ioctl_accept(struct ctl_iscsi *ci) 1806255570Strasz{ 1807255570Strasz struct ctl_iscsi_accept_params *ciap; 1808255570Strasz struct cfiscsi_session *cs; 1809255570Strasz int error; 1810255570Strasz 1811255570Strasz ciap = (struct ctl_iscsi_accept_params *)&(ci->data); 1812255570Strasz 1813255570Strasz mtx_lock(&cfiscsi_softc.lock); 1814255570Strasz for (;;) { 1815255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1816255570Strasz if (cs->cs_waiting_for_ctld) 1817255570Strasz break; 1818255570Strasz } 1819255570Strasz if (cs != NULL) 1820255570Strasz break; 1821255570Strasz error = cv_wait_sig(&cfiscsi_softc.accept_cv, &cfiscsi_softc.lock); 1822255570Strasz if (error != 0) { 1823255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1824255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "interrupted"); 1825255570Strasz ci->status = CTL_ISCSI_ERROR; 1826255570Strasz return; 1827255570Strasz } 1828255570Strasz } 1829255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1830255570Strasz 1831255570Strasz cs->cs_waiting_for_ctld = false; 1832255570Strasz cs->cs_login_phase = true; 1833255570Strasz 1834255570Strasz ciap->connection_id = cs->cs_id; 1835265509Strasz ciap->portal_id = cs->cs_portal_id; 1836265513Strasz ciap->initiator_addrlen = cs->cs_initiator_sa->sa_len; 1837265513Strasz error = copyout(cs->cs_initiator_sa, ciap->initiator_addr, 1838265513Strasz cs->cs_initiator_sa->sa_len); 1839265513Strasz if (error != 0) { 1840265513Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1841265513Strasz "copyout failed with error %d", error); 1842265513Strasz ci->status = CTL_ISCSI_ERROR; 1843265513Strasz return; 1844265513Strasz } 1845265513Strasz 1846255570Strasz ci->status = CTL_ISCSI_OK; 1847255570Strasz} 1848255570Strasz 1849255570Straszstatic void 1850255570Straszcfiscsi_ioctl_send(struct ctl_iscsi *ci) 1851255570Strasz{ 1852255570Strasz struct ctl_iscsi_send_params *cisp; 1853255570Strasz struct cfiscsi_session *cs; 1854255570Strasz struct icl_pdu *ip; 1855255570Strasz size_t datalen; 1856255570Strasz void *data; 1857255570Strasz int error; 1858255570Strasz 1859255570Strasz cisp = (struct ctl_iscsi_send_params *)&(ci->data); 1860255570Strasz 1861255570Strasz mtx_lock(&cfiscsi_softc.lock); 1862255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1863255570Strasz if (cs->cs_id == cisp->connection_id) 1864255570Strasz break; 1865255570Strasz } 1866255570Strasz if (cs == NULL) { 1867255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1868255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1869255570Strasz ci->status = CTL_ISCSI_ERROR; 1870255570Strasz return; 1871255570Strasz } 1872255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1873255570Strasz 1874255570Strasz#if 0 1875255570Strasz if (cs->cs_login_phase == false) 1876255570Strasz return (EBUSY); 1877255570Strasz#endif 1878255570Strasz 1879255570Strasz if (cs->cs_terminating) { 1880255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection is terminating"); 1881255570Strasz ci->status = CTL_ISCSI_ERROR; 1882255570Strasz return; 1883255570Strasz } 1884255570Strasz 1885255570Strasz datalen = cisp->data_segment_len; 1886255570Strasz /* 1887255570Strasz * XXX 1888255570Strasz */ 1889255570Strasz //if (datalen > CFISCSI_MAX_DATA_SEGMENT_LENGTH) { 1890255570Strasz if (datalen > 65535) { 1891255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1892255570Strasz ci->status = CTL_ISCSI_ERROR; 1893255570Strasz return; 1894255570Strasz } 1895255570Strasz if (datalen > 0) { 1896255570Strasz data = malloc(datalen, M_CFISCSI, M_WAITOK); 1897255570Strasz error = copyin(cisp->data_segment, data, datalen); 1898255570Strasz if (error != 0) { 1899255570Strasz free(data, M_CFISCSI); 1900255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "copyin error %d", error); 1901255570Strasz ci->status = CTL_ISCSI_ERROR; 1902255570Strasz return; 1903255570Strasz } 1904255570Strasz } 1905255570Strasz 1906255570Strasz ip = icl_pdu_new_bhs(cs->cs_conn, M_WAITOK); 1907255570Strasz memcpy(ip->ip_bhs, cisp->bhs, sizeof(*ip->ip_bhs)); 1908255570Strasz if (datalen > 0) { 1909255570Strasz icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1910255570Strasz free(data, M_CFISCSI); 1911255570Strasz } 1912265507Strasz CFISCSI_SESSION_LOCK(cs); 1913255570Strasz icl_pdu_queue(ip); 1914265507Strasz CFISCSI_SESSION_UNLOCK(cs); 1915255570Strasz ci->status = CTL_ISCSI_OK; 1916255570Strasz} 1917255570Strasz 1918255570Straszstatic void 1919255570Straszcfiscsi_ioctl_receive(struct ctl_iscsi *ci) 1920255570Strasz{ 1921255570Strasz struct ctl_iscsi_receive_params *cirp; 1922255570Strasz struct cfiscsi_session *cs; 1923255570Strasz struct icl_pdu *ip; 1924255570Strasz void *data; 1925265510Strasz int error; 1926255570Strasz 1927255570Strasz cirp = (struct ctl_iscsi_receive_params *)&(ci->data); 1928255570Strasz 1929255570Strasz mtx_lock(&cfiscsi_softc.lock); 1930255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1931255570Strasz if (cs->cs_id == cirp->connection_id) 1932255570Strasz break; 1933255570Strasz } 1934255570Strasz if (cs == NULL) { 1935255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1936265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1937265510Strasz "connection not found"); 1938255570Strasz ci->status = CTL_ISCSI_ERROR; 1939255570Strasz return; 1940255570Strasz } 1941255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1942255570Strasz 1943255570Strasz#if 0 1944255570Strasz if (is->is_login_phase == false) 1945255570Strasz return (EBUSY); 1946255570Strasz#endif 1947255570Strasz 1948255570Strasz CFISCSI_SESSION_LOCK(cs); 1949265510Strasz while (cs->cs_login_pdu == NULL && cs->cs_terminating == false) { 1950265510Strasz error = cv_wait_sig(&cs->cs_login_cv, &cs->cs_lock); 1951265510Strasz if (error != 0) { 1952265510Strasz CFISCSI_SESSION_UNLOCK(cs); 1953265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1954265510Strasz "interrupted by signal"); 1955265510Strasz ci->status = CTL_ISCSI_ERROR; 1956265510Strasz return; 1957265510Strasz } 1958265510Strasz } 1959265510Strasz 1960255570Strasz if (cs->cs_terminating) { 1961255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1962265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1963265510Strasz "connection terminating"); 1964255570Strasz ci->status = CTL_ISCSI_ERROR; 1965255570Strasz return; 1966255570Strasz } 1967255570Strasz ip = cs->cs_login_pdu; 1968255570Strasz cs->cs_login_pdu = NULL; 1969255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1970255570Strasz 1971255570Strasz if (ip->ip_data_len > cirp->data_segment_len) { 1972255570Strasz icl_pdu_free(ip); 1973265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1974265510Strasz "data segment too big"); 1975255570Strasz ci->status = CTL_ISCSI_ERROR; 1976255570Strasz return; 1977255570Strasz } 1978255570Strasz 1979255570Strasz copyout(ip->ip_bhs, cirp->bhs, sizeof(*ip->ip_bhs)); 1980255570Strasz if (ip->ip_data_len > 0) { 1981255570Strasz data = malloc(ip->ip_data_len, M_CFISCSI, M_WAITOK); 1982255570Strasz icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1983255570Strasz copyout(data, cirp->data_segment, ip->ip_data_len); 1984255570Strasz free(data, M_CFISCSI); 1985255570Strasz } 1986255570Strasz 1987255570Strasz icl_pdu_free(ip); 1988255570Strasz ci->status = CTL_ISCSI_OK; 1989255570Strasz} 1990255570Strasz 1991255570Strasz#endif /* !ICL_KERNEL_PROXY */ 1992255570Strasz 1993255570Straszstatic int 1994255570Straszcfiscsi_ioctl(struct cdev *dev, 1995255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td) 1996255570Strasz{ 1997255570Strasz struct ctl_iscsi *ci; 1998255570Strasz 1999255570Strasz if (cmd != CTL_ISCSI) 2000255570Strasz return (ENOTTY); 2001255570Strasz 2002255570Strasz ci = (struct ctl_iscsi *)addr; 2003255570Strasz switch (ci->type) { 2004255570Strasz case CTL_ISCSI_HANDOFF: 2005255570Strasz cfiscsi_ioctl_handoff(ci); 2006255570Strasz break; 2007255570Strasz case CTL_ISCSI_LIST: 2008255570Strasz cfiscsi_ioctl_list(ci); 2009255570Strasz break; 2010255570Strasz case CTL_ISCSI_TERMINATE: 2011255570Strasz cfiscsi_ioctl_terminate(ci); 2012255570Strasz break; 2013255570Strasz case CTL_ISCSI_LOGOUT: 2014255570Strasz cfiscsi_ioctl_logout(ci); 2015255570Strasz break; 2016255570Strasz#ifdef ICL_KERNEL_PROXY 2017255570Strasz case CTL_ISCSI_LISTEN: 2018255570Strasz cfiscsi_ioctl_listen(ci); 2019255570Strasz break; 2020255570Strasz case CTL_ISCSI_ACCEPT: 2021255570Strasz cfiscsi_ioctl_accept(ci); 2022255570Strasz break; 2023255570Strasz case CTL_ISCSI_SEND: 2024255570Strasz cfiscsi_ioctl_send(ci); 2025255570Strasz break; 2026255570Strasz case CTL_ISCSI_RECEIVE: 2027255570Strasz cfiscsi_ioctl_receive(ci); 2028255570Strasz break; 2029265508Strasz#else 2030265508Strasz case CTL_ISCSI_LISTEN: 2031265508Strasz case CTL_ISCSI_ACCEPT: 2032265508Strasz case CTL_ISCSI_SEND: 2033265508Strasz case CTL_ISCSI_RECEIVE: 2034265508Strasz ci->status = CTL_ISCSI_ERROR; 2035265508Strasz snprintf(ci->error_str, sizeof(ci->error_str), 2036265508Strasz "%s: CTL compiled without ICL_KERNEL_PROXY", 2037265508Strasz __func__); 2038265508Strasz break; 2039265508Strasz#endif /* !ICL_KERNEL_PROXY */ 2040255570Strasz default: 2041255570Strasz ci->status = CTL_ISCSI_ERROR; 2042255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 2043255570Strasz "%s: invalid iSCSI request type %d", __func__, ci->type); 2044255570Strasz break; 2045255570Strasz } 2046255570Strasz 2047255570Strasz return (0); 2048255570Strasz} 2049255570Strasz 2050255570Straszstatic int 2051255570Straszcfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len) 2052255570Strasz{ 2053255570Strasz struct cfiscsi_session *cs; 2054255570Strasz struct scsi_vpd_device_id *devid_ptr; 2055268257Smav struct scsi_vpd_id_descriptor *desc, *desc1, *desc2, *desc3, *desc4; 2056268260Smav struct scsi_vpd_id_descriptor *desc5; 2057255570Strasz struct scsi_vpd_id_t10 *t10id; 2058255570Strasz struct ctl_lun *lun; 2059255570Strasz const struct icl_pdu *request; 2060268257Smav int i, ret; 2061268145Smav char *val; 2062268260Smav size_t devid_len, wwnn_len, wwpn_len, lun_name_len; 2063255570Strasz 2064255570Strasz lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 2065255570Strasz request = ctsio->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2066255570Strasz cs = PDU_SESSION(request); 2067255570Strasz 2068255570Strasz wwpn_len = strlen(cs->cs_target->ct_name); 2069268147Smav wwpn_len += strlen(",t,0x0001"); 2070255570Strasz wwpn_len += 1; /* '\0' */ 2071255570Strasz if ((wwpn_len % 4) != 0) 2072255570Strasz wwpn_len += (4 - (wwpn_len % 4)); 2073255570Strasz 2074268260Smav wwnn_len = strlen(cs->cs_target->ct_name); 2075268260Smav wwnn_len += 1; /* '\0' */ 2076268260Smav if ((wwnn_len % 4) != 0) 2077268260Smav wwnn_len += (4 - (wwnn_len % 4)); 2078268260Smav 2079268257Smav if (lun == NULL) { 2080268257Smav lun_name_len = 0; 2081268257Smav } else { 2082268257Smav lun_name_len = strlen(cs->cs_target->ct_name); 2083268257Smav lun_name_len += strlen(",lun,XXXXXXXX"); 2084268257Smav lun_name_len += 1; /* '\0' */ 2085268257Smav if ((lun_name_len % 4) != 0) 2086268257Smav lun_name_len += (4 - (lun_name_len % 4)); 2087268257Smav } 2088268257Smav 2089255570Strasz devid_len = sizeof(struct scsi_vpd_device_id) + 2090255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 2091255570Strasz sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 2092268257Smav sizeof(struct scsi_vpd_id_descriptor) + lun_name_len + 2093268260Smav sizeof(struct scsi_vpd_id_descriptor) + wwnn_len + 2094255570Strasz sizeof(struct scsi_vpd_id_descriptor) + wwpn_len + 2095255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 2096255570Strasz sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 2097255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 2098255570Strasz sizeof(struct scsi_vpd_id_trgt_port_grp_id); 2099255570Strasz 2100255570Strasz ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO); 2101255570Strasz devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 2102255570Strasz ctsio->kern_sg_entries = 0; 2103255570Strasz 2104255570Strasz if (devid_len < alloc_len) { 2105255570Strasz ctsio->residual = alloc_len - devid_len; 2106255570Strasz ctsio->kern_data_len = devid_len; 2107255570Strasz ctsio->kern_total_len = devid_len; 2108255570Strasz } else { 2109255570Strasz ctsio->residual = 0; 2110255570Strasz ctsio->kern_data_len = alloc_len; 2111255570Strasz ctsio->kern_total_len = alloc_len; 2112255570Strasz } 2113255570Strasz ctsio->kern_data_resid = 0; 2114255570Strasz ctsio->kern_rel_offset = 0; 2115255570Strasz ctsio->kern_sg_entries = 0; 2116255570Strasz 2117255570Strasz desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 2118255570Strasz t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 2119255570Strasz desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 2120255570Strasz sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 2121255570Strasz desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 2122268257Smav lun_name_len); 2123268257Smav desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 2124268260Smav wwnn_len); 2125268260Smav desc4 = (struct scsi_vpd_id_descriptor *)(&desc3->identifier[0] + 2126255570Strasz wwpn_len); 2127268260Smav desc5 = (struct scsi_vpd_id_descriptor *)(&desc4->identifier[0] + 2128255570Strasz sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 2129255570Strasz 2130255570Strasz if (lun != NULL) 2131255570Strasz devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 2132255570Strasz lun->be_lun->lun_type; 2133255570Strasz else 2134255570Strasz devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 2135255570Strasz 2136255570Strasz devid_ptr->page_code = SVPD_DEVICE_ID; 2137255570Strasz 2138255570Strasz scsi_ulto2b(devid_len - 4, devid_ptr->length); 2139255570Strasz 2140255570Strasz /* 2141255570Strasz * We're using a LUN association here. i.e., this device ID is a 2142255570Strasz * per-LUN identifier. 2143255570Strasz */ 2144255570Strasz desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_ASCII; 2145255570Strasz desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 2146255570Strasz desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 2147268145Smav if (lun == NULL || (val = ctl_get_opt(lun->be_lun, "vendor")) == NULL) { 2148268145Smav strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 2149268145Smav } else { 2150268145Smav memset(t10id->vendor, ' ', sizeof(t10id->vendor)); 2151268145Smav strncpy(t10id->vendor, val, 2152268145Smav min(sizeof(t10id->vendor), strlen(val))); 2153268145Smav } 2154255570Strasz 2155255570Strasz /* 2156255570Strasz * If we've actually got a backend, copy the device id from the 2157255570Strasz * per-LUN data. Otherwise, set it to all spaces. 2158255570Strasz */ 2159255570Strasz if (lun != NULL) { 2160255570Strasz /* 2161255570Strasz * Copy the backend's LUN ID. 2162255570Strasz */ 2163255570Strasz strncpy((char *)t10id->vendor_spec_id, 2164255570Strasz (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 2165255570Strasz } else { 2166255570Strasz /* 2167255570Strasz * No backend, set this to spaces. 2168255570Strasz */ 2169255570Strasz memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 2170255570Strasz } 2171255570Strasz 2172255570Strasz /* 2173268257Smav * desc1 is for the unique LUN name. 2174268257Smav * 2175268257Smav * XXX: According to SPC-3, LUN must report the same ID through 2176268257Smav * all the ports. The code below, however, reports the 2177268257Smav * ID only via iSCSI. 2178255570Strasz */ 2179268257Smav desc1->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2180268257Smav desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | 2181268257Smav SVPD_ID_TYPE_SCSI_NAME; 2182268257Smav desc1->length = lun_name_len; 2183268257Smav if (lun != NULL) { 2184268257Smav /* 2185268257Smav * Find the per-target LUN number. 2186268257Smav */ 2187268257Smav for (i = 0; i < CTL_MAX_LUNS; i++) { 2188268257Smav if (cs->cs_target->ct_luns[i] == lun->lun) 2189268257Smav break; 2190268257Smav } 2191268257Smav KASSERT(i < CTL_MAX_LUNS, 2192268257Smav ("lun %jd not found", (uintmax_t)lun->lun)); 2193268257Smav ret = snprintf(desc1->identifier, lun_name_len, "%s,lun,%d", 2194268257Smav cs->cs_target->ct_name, i); 2195268257Smav KASSERT(ret > 0 && ret <= lun_name_len, ("bad snprintf")); 2196268257Smav } else { 2197268257Smav KASSERT(lun_name_len == 0, ("no lun, but lun_name_len != 0")); 2198268257Smav } 2199255570Strasz 2200255570Strasz /* 2201268260Smav * desc2 is for the Target Name. 2202255570Strasz */ 2203268260Smav desc2->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2204268260Smav desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_TARGET | 2205268257Smav SVPD_ID_TYPE_SCSI_NAME; 2206268260Smav desc2->length = wwnn_len; 2207268260Smav snprintf(desc2->identifier, wwnn_len, "%s", cs->cs_target->ct_name); 2208268260Smav 2209268260Smav /* 2210268260Smav * desc3 is for the WWPN which is a port asscociation. 2211268260Smav */ 2212268260Smav desc3->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2213268260Smav desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2214268260Smav SVPD_ID_TYPE_SCSI_NAME; 2215268260Smav desc3->length = wwpn_len; 2216268260Smav snprintf(desc3->identifier, wwpn_len, "%s,t,0x%4.4x", 2217268257Smav cs->cs_target->ct_name, cs->cs_portal_group_tag); 2218255570Strasz 2219255570Strasz /* 2220268257Smav * desc3 is for the Relative Target Port(type 4h) identifier 2221255570Strasz */ 2222268260Smav desc4->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY; 2223268260Smav desc4->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2224268257Smav SVPD_ID_TYPE_RELTARG; 2225268260Smav desc4->length = 4; 2226268260Smav desc4->identifier[3] = 1; 2227255570Strasz 2228268257Smav /* 2229268257Smav * desc4 is for the Target Port Group(type 5h) identifier 2230268257Smav */ 2231268260Smav desc5->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY; 2232268260Smav desc5->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2233268257Smav SVPD_ID_TYPE_TPORTGRP; 2234268260Smav desc5->length = 4; 2235268260Smav desc5->identifier[3] = 1; 2236268257Smav 2237255570Strasz ctsio->scsi_status = SCSI_STATUS_OK; 2238255570Strasz 2239255570Strasz ctsio->be_move_done = ctl_config_move_done; 2240255570Strasz ctl_datamove((union ctl_io *)ctsio); 2241255570Strasz 2242255570Strasz return (CTL_RETVAL_COMPLETE); 2243255570Strasz} 2244255570Strasz 2245255570Straszstatic void 2246255570Straszcfiscsi_target_hold(struct cfiscsi_target *ct) 2247255570Strasz{ 2248255570Strasz 2249255570Strasz refcount_acquire(&ct->ct_refcount); 2250255570Strasz} 2251255570Strasz 2252255570Straszstatic void 2253255570Straszcfiscsi_target_release(struct cfiscsi_target *ct) 2254255570Strasz{ 2255255570Strasz struct cfiscsi_softc *softc; 2256255570Strasz 2257255570Strasz softc = ct->ct_softc; 2258255570Strasz mtx_lock(&softc->lock); 2259255570Strasz if (refcount_release(&ct->ct_refcount)) { 2260255570Strasz TAILQ_REMOVE(&softc->targets, ct, ct_next); 2261255570Strasz mtx_unlock(&softc->lock); 2262255570Strasz free(ct, M_CFISCSI); 2263255570Strasz 2264255570Strasz return; 2265255570Strasz } 2266255570Strasz mtx_unlock(&softc->lock); 2267255570Strasz} 2268255570Strasz 2269255570Straszstatic struct cfiscsi_target * 2270255570Straszcfiscsi_target_find(struct cfiscsi_softc *softc, const char *name) 2271255570Strasz{ 2272255570Strasz struct cfiscsi_target *ct; 2273255570Strasz 2274255570Strasz mtx_lock(&softc->lock); 2275255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2276255570Strasz if (strcmp(name, ct->ct_name) != 0) 2277255570Strasz continue; 2278255570Strasz cfiscsi_target_hold(ct); 2279255570Strasz mtx_unlock(&softc->lock); 2280255570Strasz return (ct); 2281255570Strasz } 2282255570Strasz mtx_unlock(&softc->lock); 2283255570Strasz 2284255570Strasz return (NULL); 2285255570Strasz} 2286255570Strasz 2287255570Straszstatic struct cfiscsi_target * 2288255570Straszcfiscsi_target_find_or_create(struct cfiscsi_softc *softc, const char *name, 2289255570Strasz const char *alias) 2290255570Strasz{ 2291255570Strasz struct cfiscsi_target *ct, *newct; 2292255570Strasz int i; 2293255570Strasz 2294255570Strasz if (name[0] == '\0' || strlen(name) >= CTL_ISCSI_NAME_LEN) 2295255570Strasz return (NULL); 2296255570Strasz 2297255570Strasz newct = malloc(sizeof(*newct), M_CFISCSI, M_WAITOK | M_ZERO); 2298255570Strasz 2299255570Strasz mtx_lock(&softc->lock); 2300255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2301255570Strasz if (strcmp(name, ct->ct_name) != 0) 2302255570Strasz continue; 2303255570Strasz cfiscsi_target_hold(ct); 2304255570Strasz mtx_unlock(&softc->lock); 2305255570Strasz free(newct, M_CFISCSI); 2306255570Strasz return (ct); 2307255570Strasz } 2308255570Strasz 2309255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) 2310255570Strasz newct->ct_luns[i] = -1; 2311255570Strasz 2312255570Strasz strlcpy(newct->ct_name, name, sizeof(newct->ct_name)); 2313255570Strasz if (alias != NULL) 2314255570Strasz strlcpy(newct->ct_alias, alias, sizeof(newct->ct_alias)); 2315255570Strasz refcount_init(&newct->ct_refcount, 1); 2316255570Strasz newct->ct_softc = softc; 2317255570Strasz TAILQ_INSERT_TAIL(&softc->targets, newct, ct_next); 2318255570Strasz mtx_unlock(&softc->lock); 2319255570Strasz 2320255570Strasz return (newct); 2321255570Strasz} 2322255570Strasz 2323255570Strasz/* 2324255570Strasz * Takes LUN from the target space and returns LUN from the CTL space. 2325255570Strasz */ 2326255570Straszstatic uint32_t 2327255570Straszcfiscsi_map_lun(void *arg, uint32_t lun) 2328255570Strasz{ 2329255570Strasz struct cfiscsi_session *cs; 2330255570Strasz 2331255570Strasz cs = arg; 2332255570Strasz 2333255570Strasz if (lun >= CTL_MAX_LUNS) { 2334255570Strasz CFISCSI_DEBUG("requested lun number %d is higher " 2335255570Strasz "than maximum %d", lun, CTL_MAX_LUNS - 1); 2336255570Strasz return (0xffffffff); 2337255570Strasz } 2338255570Strasz 2339255570Strasz if (cs->cs_target->ct_luns[lun] < 0) 2340255570Strasz return (0xffffffff); 2341255570Strasz 2342255570Strasz return (cs->cs_target->ct_luns[lun]); 2343255570Strasz} 2344255570Strasz 2345255570Straszstatic int 2346255570Straszcfiscsi_target_set_lun(struct cfiscsi_target *ct, 2347255570Strasz unsigned long lun_id, unsigned long ctl_lun_id) 2348255570Strasz{ 2349255570Strasz 2350255570Strasz if (lun_id >= CTL_MAX_LUNS) { 2351255570Strasz CFISCSI_WARN("requested lun number %ld is higher " 2352255570Strasz "than maximum %d", lun_id, CTL_MAX_LUNS - 1); 2353255570Strasz return (-1); 2354255570Strasz } 2355255570Strasz 2356255570Strasz if (ct->ct_luns[lun_id] >= 0) { 2357255570Strasz /* 2358255570Strasz * CTL calls cfiscsi_lun_enable() twice for each LUN - once 2359255570Strasz * when the LUN is created, and a second time just before 2360255570Strasz * the port is brought online; don't emit warnings 2361255570Strasz * for that case. 2362255570Strasz */ 2363255570Strasz if (ct->ct_luns[lun_id] == ctl_lun_id) 2364255570Strasz return (0); 2365255570Strasz CFISCSI_WARN("lun %ld already allocated", lun_id); 2366255570Strasz return (-1); 2367255570Strasz } 2368255570Strasz 2369255570Strasz#if 0 2370255570Strasz CFISCSI_DEBUG("adding mapping for lun %ld, target %s " 2371255570Strasz "to ctl lun %ld", lun_id, ct->ct_name, ctl_lun_id); 2372255570Strasz#endif 2373255570Strasz 2374255570Strasz ct->ct_luns[lun_id] = ctl_lun_id; 2375255570Strasz cfiscsi_target_hold(ct); 2376255570Strasz 2377255570Strasz return (0); 2378255570Strasz} 2379255570Strasz 2380255570Straszstatic int 2381255570Straszcfiscsi_target_unset_lun(struct cfiscsi_target *ct, unsigned long lun_id) 2382255570Strasz{ 2383255570Strasz 2384255570Strasz if (ct->ct_luns[lun_id] < 0) { 2385255570Strasz CFISCSI_WARN("lun %ld not allocated", lun_id); 2386255570Strasz return (-1); 2387255570Strasz } 2388255570Strasz 2389255570Strasz ct->ct_luns[lun_id] = -1; 2390255570Strasz cfiscsi_target_release(ct); 2391255570Strasz 2392255570Strasz return (0); 2393255570Strasz} 2394255570Strasz 2395255570Straszstatic int 2396255570Straszcfiscsi_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 2397255570Strasz{ 2398255570Strasz struct cfiscsi_softc *softc; 2399255570Strasz struct cfiscsi_target *ct; 2400255570Strasz const char *target = NULL, *target_alias = NULL; 2401255570Strasz const char *lun = NULL; 2402255570Strasz unsigned long tmp; 2403255570Strasz 2404255570Strasz softc = (struct cfiscsi_softc *)arg; 2405255570Strasz 2406268143Smav target = ctl_get_opt(control_softc->ctl_luns[lun_id]->be_lun, 2407268143Smav "cfiscsi_target"); 2408268143Smav target_alias = ctl_get_opt(control_softc->ctl_luns[lun_id]->be_lun, 2409268143Smav "cfiscsi_target_alias"); 2410268143Smav lun = ctl_get_opt(control_softc->ctl_luns[lun_id]->be_lun, 2411268143Smav "cfiscsi_lun"); 2412255570Strasz 2413255570Strasz if (target == NULL && lun == NULL) 2414255570Strasz return (0); 2415255570Strasz 2416255570Strasz if (target == NULL || lun == NULL) { 2417255570Strasz CFISCSI_WARN("lun added with cfiscsi_target, but without " 2418255570Strasz "cfiscsi_lun, or the other way around; ignoring"); 2419255570Strasz return (0); 2420255570Strasz } 2421255570Strasz 2422255570Strasz ct = cfiscsi_target_find_or_create(softc, target, target_alias); 2423255570Strasz if (ct == NULL) { 2424255570Strasz CFISCSI_WARN("failed to create target \"%s\"", target); 2425255570Strasz return (0); 2426255570Strasz } 2427255570Strasz 2428255570Strasz tmp = strtoul(lun, NULL, 10); 2429255570Strasz cfiscsi_target_set_lun(ct, tmp, lun_id); 2430264523Smav cfiscsi_target_release(ct); 2431255570Strasz return (0); 2432255570Strasz} 2433255570Strasz 2434255570Straszstatic int 2435255570Straszcfiscsi_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 2436255570Strasz{ 2437255570Strasz struct cfiscsi_softc *softc; 2438255570Strasz struct cfiscsi_target *ct; 2439255570Strasz int i; 2440255570Strasz 2441255570Strasz softc = (struct cfiscsi_softc *)arg; 2442255570Strasz 2443255570Strasz mtx_lock(&softc->lock); 2444255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2445255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) { 2446255570Strasz if (ct->ct_luns[i] < 0) 2447255570Strasz continue; 2448255570Strasz if (ct->ct_luns[i] != lun_id) 2449255570Strasz continue; 2450264523Smav mtx_unlock(&softc->lock); 2451255570Strasz cfiscsi_target_unset_lun(ct, i); 2452264523Smav return (0); 2453255570Strasz } 2454255570Strasz } 2455255570Strasz mtx_unlock(&softc->lock); 2456255570Strasz return (0); 2457255570Strasz} 2458255570Strasz 2459255570Straszstatic void 2460256065Straszcfiscsi_datamove_in(union ctl_io *io) 2461255570Strasz{ 2462255570Strasz struct cfiscsi_session *cs; 2463255570Strasz struct icl_pdu *request, *response; 2464255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 2465255570Strasz struct iscsi_bhs_data_in *bhsdi; 2466255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2467265490Strasz size_t len, expected_len, sg_len, buffer_offset; 2468265490Strasz const char *sg_addr; 2469255824Strasz int ctl_sg_count, error, i; 2470255570Strasz 2471255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2472255570Strasz cs = PDU_SESSION(request); 2473255570Strasz 2474255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2475255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2476255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2477255570Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2478255570Strasz 2479255570Strasz if (io->scsiio.kern_sg_entries > 0) { 2480255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2481255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 2482255570Strasz } else { 2483255570Strasz ctl_sglist = &ctl_sg_entry; 2484255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 2485255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 2486255570Strasz ctl_sg_count = 1; 2487255570Strasz } 2488255570Strasz 2489255570Strasz /* 2490265490Strasz * This is the total amount of data to be transferred within the current 2491265490Strasz * SCSI command. We need to record it so that we can properly report 2492255570Strasz * underflow/underflow. 2493255570Strasz */ 2494255570Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2495255570Strasz 2496256065Strasz /* 2497265490Strasz * This is the offset within the current SCSI command; for the first 2498265490Strasz * call to cfiscsi_datamove() it will be 0, and for subsequent ones 2499265640Smav * it will be the sum of lengths of previous ones. 2500256065Strasz */ 2501265490Strasz buffer_offset = io->scsiio.kern_rel_offset; 2502255570Strasz 2503265490Strasz /* 2504265490Strasz * This is the transfer length expected by the initiator. In theory, 2505265490Strasz * it could be different from the correct amount of data from the SCSI 2506265490Strasz * point of view, even if that doesn't make any sense. 2507265490Strasz */ 2508265490Strasz expected_len = ntohl(bhssc->bhssc_expected_data_transfer_length); 2509265490Strasz#if 0 2510265640Smav if (expected_len != io->scsiio.kern_total_len) { 2511265640Smav CFISCSI_SESSION_DEBUG(cs, "expected transfer length %zd, " 2512265640Smav "actual length %zd", expected_len, 2513265640Smav (size_t)io->scsiio.kern_total_len); 2514265640Smav } 2515265490Strasz#endif 2516265490Strasz 2517265490Strasz if (buffer_offset >= expected_len) { 2518265490Strasz#if 0 2519265490Strasz CFISCSI_SESSION_DEBUG(cs, "buffer_offset = %zd, " 2520265490Strasz "already sent the expected len", buffer_offset); 2521265490Strasz#endif 2522265490Strasz io->scsiio.be_move_done(io); 2523265490Strasz return; 2524265490Strasz } 2525265490Strasz 2526256065Strasz i = 0; 2527265490Strasz sg_addr = NULL; 2528265490Strasz sg_len = 0; 2529256065Strasz response = NULL; 2530256065Strasz bhsdi = NULL; 2531256065Strasz for (;;) { 2532256065Strasz if (response == NULL) { 2533256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2534255570Strasz if (response == NULL) { 2535255824Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2536255824Strasz "allocate memory; dropping connection"); 2537256163Strasz ctl_set_busy(&io->scsiio); 2538256163Strasz io->scsiio.be_move_done(io); 2539255824Strasz cfiscsi_session_terminate(cs); 2540255824Strasz return; 2541255824Strasz } 2542256065Strasz bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 2543256065Strasz bhsdi->bhsdi_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_IN; 2544256065Strasz bhsdi->bhsdi_initiator_task_tag = 2545256065Strasz bhssc->bhssc_initiator_task_tag; 2546256065Strasz bhsdi->bhsdi_datasn = htonl(PDU_EXPDATASN(request)); 2547256065Strasz PDU_EXPDATASN(request)++; 2548265490Strasz bhsdi->bhsdi_buffer_offset = htonl(buffer_offset); 2549256065Strasz } 2550255570Strasz 2551265490Strasz KASSERT(i < ctl_sg_count, ("i >= ctl_sg_count")); 2552265490Strasz if (sg_len == 0) { 2553265490Strasz sg_addr = ctl_sglist[i].addr; 2554265490Strasz sg_len = ctl_sglist[i].len; 2555265490Strasz KASSERT(sg_len > 0, ("sg_len <= 0")); 2556256065Strasz } 2557255570Strasz 2558265490Strasz len = sg_len; 2559265490Strasz 2560265490Strasz /* 2561265490Strasz * Truncate to maximum data segment length. 2562265490Strasz */ 2563265490Strasz KASSERT(response->ip_data_len < cs->cs_max_data_segment_length, 2564265640Smav ("ip_data_len %zd >= max_data_segment_length %zd", 2565265490Strasz response->ip_data_len, cs->cs_max_data_segment_length)); 2566265490Strasz if (response->ip_data_len + len > 2567265640Smav cs->cs_max_data_segment_length) { 2568265490Strasz len = cs->cs_max_data_segment_length - 2569256065Strasz response->ip_data_len; 2570265640Smav KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2571265640Smav len, sg_len)); 2572265640Smav } 2573265490Strasz 2574265490Strasz /* 2575265490Strasz * Truncate to expected data transfer length. 2576265490Strasz */ 2577265490Strasz KASSERT(buffer_offset + response->ip_data_len < expected_len, 2578265640Smav ("buffer_offset %zd + ip_data_len %zd >= expected_len %zd", 2579265640Smav buffer_offset, response->ip_data_len, expected_len)); 2580265490Strasz if (buffer_offset + response->ip_data_len + len > expected_len) { 2581265490Strasz CFISCSI_SESSION_DEBUG(cs, "truncating from %zd " 2582265490Strasz "to expected data transfer length %zd", 2583265490Strasz buffer_offset + response->ip_data_len + len, expected_len); 2584265490Strasz len = expected_len - (buffer_offset + response->ip_data_len); 2585265640Smav KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2586265640Smav len, sg_len)); 2587265490Strasz } 2588265490Strasz 2589265490Strasz error = icl_pdu_append_data(response, sg_addr, len, M_NOWAIT); 2590256065Strasz if (error != 0) { 2591256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2592256065Strasz "allocate memory; dropping connection"); 2593256065Strasz icl_pdu_free(response); 2594256163Strasz ctl_set_busy(&io->scsiio); 2595256163Strasz io->scsiio.be_move_done(io); 2596256065Strasz cfiscsi_session_terminate(cs); 2597256065Strasz return; 2598256065Strasz } 2599265490Strasz sg_addr += len; 2600265490Strasz sg_len -= len; 2601256065Strasz 2602265640Smav KASSERT(buffer_offset + request->ip_data_len <= expected_len, 2603265640Smav ("buffer_offset %zd + ip_data_len %zd > expected_len %zd", 2604265640Smav buffer_offset, request->ip_data_len, expected_len)); 2605265640Smav if (buffer_offset + request->ip_data_len == expected_len) { 2606256065Strasz /* 2607265490Strasz * Already have the amount of data the initiator wanted. 2608265490Strasz */ 2609265490Strasz break; 2610265490Strasz } 2611265490Strasz 2612265490Strasz if (sg_len == 0) { 2613265490Strasz /* 2614256065Strasz * End of scatter-gather segment; 2615256065Strasz * proceed to the next one... 2616256065Strasz */ 2617256065Strasz if (i == ctl_sg_count - 1) { 2618255570Strasz /* 2619256065Strasz * ... unless this was the last one. 2620255570Strasz */ 2621256065Strasz break; 2622255570Strasz } 2623256065Strasz i++; 2624255570Strasz } 2625256065Strasz 2626256065Strasz if (response->ip_data_len == cs->cs_max_data_segment_length) { 2627256065Strasz /* 2628256065Strasz * Can't stuff more data into the current PDU; 2629256065Strasz * queue it. Note that's not enough to check 2630256195Strasz * for kern_data_resid == 0 instead; there 2631256065Strasz * may be several Data-In PDUs for the final 2632256065Strasz * call to cfiscsi_datamove(), and we want 2633256065Strasz * to set the F flag only on the last of them. 2634256065Strasz */ 2635265640Smav buffer_offset += response->ip_data_len; 2636265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2637265490Strasz buffer_offset == expected_len) 2638255570Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2639255570Strasz cfiscsi_pdu_queue(response); 2640256065Strasz response = NULL; 2641256065Strasz bhsdi = NULL; 2642255570Strasz } 2643256065Strasz } 2644256065Strasz if (response != NULL) { 2645265640Smav buffer_offset += response->ip_data_len; 2646265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2647265490Strasz buffer_offset == expected_len) 2648256065Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2649256065Strasz KASSERT(response->ip_data_len > 0, ("sending empty Data-In")); 2650256065Strasz cfiscsi_pdu_queue(response); 2651256065Strasz } 2652255570Strasz 2653256065Strasz io->scsiio.be_move_done(io); 2654256065Strasz} 2655255570Strasz 2656256065Straszstatic void 2657256065Straszcfiscsi_datamove_out(union ctl_io *io) 2658256065Strasz{ 2659256065Strasz struct cfiscsi_session *cs; 2660256065Strasz struct icl_pdu *request, *response; 2661256065Strasz const struct iscsi_bhs_scsi_command *bhssc; 2662256065Strasz struct iscsi_bhs_r2t *bhsr2t; 2663256065Strasz struct cfiscsi_data_wait *cdw; 2664256065Strasz uint32_t target_transfer_tag; 2665256065Strasz bool done; 2666256065Strasz 2667256065Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2668256065Strasz cs = PDU_SESSION(request); 2669256065Strasz 2670256065Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2671256065Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2672256065Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2673256065Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2674256065Strasz 2675256065Strasz /* 2676256065Strasz * We need to record it so that we can properly report 2677256065Strasz * underflow/underflow. 2678256065Strasz */ 2679256065Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2680256065Strasz 2681265640Smav /* 2682265640Smav * We hadn't received anything during this datamove yet. 2683265640Smav */ 2684265640Smav io->scsiio.ext_data_filled = 0; 2685265640Smav 2686265497Strasz target_transfer_tag = 2687265497Strasz atomic_fetchadd_32(&cs->cs_target_transfer_tag, 1); 2688256065Strasz 2689255570Strasz#if 0 2690256065Strasz CFISCSI_SESSION_DEBUG(cs, "expecting Data-Out with initiator " 2691256065Strasz "task tag 0x%x, target transfer tag 0x%x", 2692256065Strasz bhssc->bhssc_initiator_task_tag, target_transfer_tag); 2693255570Strasz#endif 2694256065Strasz cdw = uma_zalloc(cfiscsi_data_wait_zone, M_NOWAIT | M_ZERO); 2695256065Strasz if (cdw == NULL) { 2696256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2697256065Strasz "allocate memory; dropping connection"); 2698256163Strasz ctl_set_busy(&io->scsiio); 2699256163Strasz io->scsiio.be_move_done(io); 2700256065Strasz cfiscsi_session_terminate(cs); 2701256163Strasz return; 2702256065Strasz } 2703256065Strasz cdw->cdw_ctl_io = io; 2704265489Strasz cdw->cdw_target_transfer_tag = target_transfer_tag; 2705256065Strasz cdw->cdw_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2706256065Strasz 2707268141Smav if (cs->cs_immediate_data && io->scsiio.kern_rel_offset < 2708268141Smav icl_pdu_data_segment_length(request)) { 2709256065Strasz done = cfiscsi_handle_data_segment(request, cdw); 2710256065Strasz if (done) { 2711256065Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2712256065Strasz io->scsiio.be_move_done(io); 2713256065Strasz return; 2714255837Strasz } 2715256065Strasz } 2716255570Strasz 2717256065Strasz CFISCSI_SESSION_LOCK(cs); 2718256065Strasz TAILQ_INSERT_TAIL(&cs->cs_waiting_for_data_out, cdw, cdw_next); 2719256065Strasz CFISCSI_SESSION_UNLOCK(cs); 2720255570Strasz 2721256065Strasz /* 2722256065Strasz * XXX: We should limit the number of outstanding R2T PDUs 2723256065Strasz * per task to MaxOutstandingR2T. 2724256065Strasz */ 2725256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2726256065Strasz if (response == NULL) { 2727256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2728256065Strasz "allocate memory; dropping connection"); 2729256163Strasz ctl_set_busy(&io->scsiio); 2730256163Strasz io->scsiio.be_move_done(io); 2731256065Strasz cfiscsi_session_terminate(cs); 2732256163Strasz return; 2733255570Strasz } 2734256065Strasz bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 2735256065Strasz bhsr2t->bhsr2t_opcode = ISCSI_BHS_OPCODE_R2T; 2736256065Strasz bhsr2t->bhsr2t_flags = 0x80; 2737256065Strasz bhsr2t->bhsr2t_lun = bhssc->bhssc_lun; 2738256065Strasz bhsr2t->bhsr2t_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2739265489Strasz bhsr2t->bhsr2t_target_transfer_tag = target_transfer_tag; 2740256065Strasz /* 2741256065Strasz * XXX: Here we assume that cfiscsi_datamove() won't ever 2742256065Strasz * be running concurrently on several CPUs for a given 2743256065Strasz * command. 2744256065Strasz */ 2745256065Strasz bhsr2t->bhsr2t_r2tsn = htonl(PDU_R2TSN(request)); 2746256065Strasz PDU_R2TSN(request)++; 2747256065Strasz /* 2748256065Strasz * This is the offset within the current SCSI command; 2749256065Strasz * i.e. for the first call of datamove(), it will be 0, 2750256065Strasz * and for subsequent ones it will be the sum of lengths 2751256065Strasz * of previous ones. 2752256065Strasz * 2753256065Strasz * The ext_data_filled is to account for unsolicited 2754256065Strasz * (immediate) data that might have already arrived. 2755256065Strasz */ 2756256065Strasz bhsr2t->bhsr2t_buffer_offset = 2757256065Strasz htonl(io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled); 2758256065Strasz /* 2759256065Strasz * This is the total length (sum of S/G lengths) this call 2760256065Strasz * to cfiscsi_datamove() is supposed to handle. 2761256065Strasz * 2762256065Strasz * XXX: Limit it to MaxBurstLength. 2763256065Strasz */ 2764256065Strasz bhsr2t->bhsr2t_desired_data_transfer_length = 2765256065Strasz htonl(io->scsiio.kern_data_len - io->scsiio.ext_data_filled); 2766256065Strasz cfiscsi_pdu_queue(response); 2767255570Strasz} 2768255570Strasz 2769255570Straszstatic void 2770256065Straszcfiscsi_datamove(union ctl_io *io) 2771256065Strasz{ 2772256065Strasz 2773256065Strasz if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 2774256065Strasz cfiscsi_datamove_in(io); 2775256065Strasz else 2776256065Strasz cfiscsi_datamove_out(io); 2777256065Strasz} 2778256065Strasz 2779256065Straszstatic void 2780255570Straszcfiscsi_scsi_command_done(union ctl_io *io) 2781255570Strasz{ 2782255570Strasz struct icl_pdu *request, *response; 2783255570Strasz struct iscsi_bhs_scsi_command *bhssc; 2784255570Strasz struct iscsi_bhs_scsi_response *bhssr; 2785255570Strasz#ifdef DIAGNOSTIC 2786255570Strasz struct cfiscsi_data_wait *cdw; 2787255570Strasz#endif 2788255570Strasz struct cfiscsi_session *cs; 2789255570Strasz uint16_t sense_length; 2790255570Strasz 2791255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2792255570Strasz cs = PDU_SESSION(request); 2793255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2794255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2795255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2796255570Strasz ("replying to wrong opcode 0x%x", bhssc->bhssc_opcode)); 2797255570Strasz 2798255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 2799255570Strasz // bhssc->bhssc_initiator_task_tag); 2800255570Strasz 2801255570Strasz#ifdef DIAGNOSTIC 2802255570Strasz CFISCSI_SESSION_LOCK(cs); 2803255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) 2804255570Strasz KASSERT(bhssc->bhssc_initiator_task_tag != 2805255570Strasz cdw->cdw_initiator_task_tag, ("dangling cdw")); 2806255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2807255570Strasz#endif 2808255570Strasz 2809255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2810255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 2811255570Strasz bhssr->bhssr_opcode = ISCSI_BHS_OPCODE_SCSI_RESPONSE; 2812255570Strasz bhssr->bhssr_flags = 0x80; 2813255570Strasz /* 2814255570Strasz * XXX: We don't deal with bidirectional under/overflows; 2815255570Strasz * does anything actually support those? 2816255570Strasz */ 2817255570Strasz if (PDU_TOTAL_TRANSFER_LEN(request) < 2818255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2819255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_UNDERFLOW; 2820255570Strasz bhssr->bhssr_residual_count = 2821255570Strasz htonl(ntohl(bhssc->bhssc_expected_data_transfer_length) - 2822255570Strasz PDU_TOTAL_TRANSFER_LEN(request)); 2823255570Strasz //CFISCSI_SESSION_DEBUG(cs, "underflow; residual count %d", 2824255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2825255570Strasz } else if (PDU_TOTAL_TRANSFER_LEN(request) > 2826255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2827255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_OVERFLOW; 2828255570Strasz bhssr->bhssr_residual_count = 2829255570Strasz htonl(PDU_TOTAL_TRANSFER_LEN(request) - 2830255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)); 2831255570Strasz //CFISCSI_SESSION_DEBUG(cs, "overflow; residual count %d", 2832255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2833255570Strasz } 2834255570Strasz bhssr->bhssr_response = BHSSR_RESPONSE_COMMAND_COMPLETED; 2835255570Strasz bhssr->bhssr_status = io->scsiio.scsi_status; 2836255570Strasz bhssr->bhssr_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2837255570Strasz bhssr->bhssr_expdatasn = htonl(PDU_EXPDATASN(request)); 2838255570Strasz 2839255570Strasz if (io->scsiio.sense_len > 0) { 2840255570Strasz#if 0 2841255570Strasz CFISCSI_SESSION_DEBUG(cs, "returning %d bytes of sense data", 2842255570Strasz io->scsiio.sense_len); 2843255570Strasz#endif 2844255570Strasz sense_length = htons(io->scsiio.sense_len); 2845255570Strasz icl_pdu_append_data(response, 2846255570Strasz &sense_length, sizeof(sense_length), M_WAITOK); 2847255570Strasz icl_pdu_append_data(response, 2848255570Strasz &io->scsiio.sense_data, io->scsiio.sense_len, M_WAITOK); 2849255570Strasz } 2850255570Strasz 2851255570Strasz ctl_free_io(io); 2852255570Strasz icl_pdu_free(request); 2853255570Strasz cfiscsi_pdu_queue(response); 2854255570Strasz} 2855255570Strasz 2856255570Straszstatic void 2857255570Straszcfiscsi_task_management_done(union ctl_io *io) 2858255570Strasz{ 2859255570Strasz struct icl_pdu *request, *response; 2860255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 2861255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 2862255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 2863255570Strasz struct cfiscsi_session *cs; 2864255570Strasz 2865255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2866255570Strasz cs = PDU_SESSION(request); 2867255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2868255570Strasz KASSERT((bhstmr->bhstmr_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2869255570Strasz ISCSI_BHS_OPCODE_TASK_REQUEST, 2870255570Strasz ("replying to wrong opcode 0x%x", bhstmr->bhstmr_opcode)); 2871255570Strasz 2872255570Strasz#if 0 2873255570Strasz CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x; referenced task tag 0x%x", 2874255570Strasz bhstmr->bhstmr_initiator_task_tag, 2875255570Strasz bhstmr->bhstmr_referenced_task_tag); 2876255570Strasz#endif 2877255570Strasz 2878255570Strasz if ((bhstmr->bhstmr_function & ~0x80) == 2879255570Strasz BHSTMR_FUNCTION_ABORT_TASK) { 2880255570Strasz /* 2881255570Strasz * Make sure we no longer wait for Data-Out for this command. 2882255570Strasz */ 2883255570Strasz CFISCSI_SESSION_LOCK(cs); 2884255570Strasz TAILQ_FOREACH_SAFE(cdw, 2885255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 2886255570Strasz if (bhstmr->bhstmr_referenced_task_tag != 2887255570Strasz cdw->cdw_initiator_task_tag) 2888255570Strasz continue; 2889255570Strasz 2890255570Strasz#if 0 2891255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task " 2892255570Strasz "tag 0x%x", bhstmr->bhstmr_initiator_task_tag); 2893255570Strasz#endif 2894255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, 2895255570Strasz cdw, cdw_next); 2896255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 2897255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2898255570Strasz } 2899255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2900255570Strasz } 2901255570Strasz 2902255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2903255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 2904255570Strasz response->ip_bhs; 2905255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 2906255570Strasz bhstmr2->bhstmr_flags = 0x80; 2907255570Strasz if (io->io_hdr.status == CTL_SUCCESS) { 2908255570Strasz bhstmr2->bhstmr_response = BHSTMR_RESPONSE_FUNCTION_COMPLETE; 2909255570Strasz } else { 2910255570Strasz /* 2911255570Strasz * XXX: How to figure out what exactly went wrong? iSCSI spec 2912255570Strasz * expects us to provide detailed error, e.g. "Task does 2913255570Strasz * not exist" or "LUN does not exist". 2914255570Strasz */ 2915255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED"); 2916255570Strasz bhstmr2->bhstmr_response = 2917255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 2918255570Strasz } 2919255570Strasz bhstmr2->bhstmr_initiator_task_tag = bhstmr->bhstmr_initiator_task_tag; 2920255570Strasz 2921255570Strasz ctl_free_io(io); 2922255570Strasz icl_pdu_free(request); 2923255570Strasz cfiscsi_pdu_queue(response); 2924255570Strasz} 2925255570Strasz 2926255570Straszstatic void 2927255570Straszcfiscsi_done(union ctl_io *io) 2928255570Strasz{ 2929255570Strasz struct icl_pdu *request; 2930255570Strasz struct cfiscsi_session *cs; 2931255570Strasz 2932255570Strasz KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 2933255570Strasz ("invalid CTL status %#x", io->io_hdr.status)); 2934255570Strasz 2935255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2936255570Strasz if (request == NULL) { 2937255570Strasz /* 2938255570Strasz * Implicit task termination has just completed; nothing to do. 2939255570Strasz */ 2940255570Strasz return; 2941255570Strasz } 2942255570Strasz 2943255570Strasz cs = PDU_SESSION(request); 2944255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 2945255570Strasz 2946255570Strasz switch (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) { 2947255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 2948255570Strasz cfiscsi_scsi_command_done(io); 2949255570Strasz break; 2950255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 2951255570Strasz cfiscsi_task_management_done(io); 2952255570Strasz break; 2953255570Strasz default: 2954255570Strasz panic("cfiscsi_done called with wrong opcode 0x%x", 2955255570Strasz request->ip_bhs->bhs_opcode); 2956255570Strasz } 2957255570Strasz} 2958