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: releng/10.2/sys/cam/ctl/ctl_frontend_iscsi.c 284798 2015-06-25 07:11:48Z mav $ 30255570Strasz */ 31255570Strasz 32255570Strasz/* 33255570Strasz * CTL frontend for the iSCSI protocol. 34255570Strasz */ 35255570Strasz 36255570Strasz#include <sys/cdefs.h> 37255570Strasz__FBSDID("$FreeBSD: releng/10.2/sys/cam/ctl/ctl_frontend_iscsi.c 284798 2015-06-25 07:11:48Z mav $"); 38255570Strasz 39255570Strasz#include <sys/param.h> 40280258Srwatson#include <sys/capsicum.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 70270891Strasz#include <dev/iscsi/icl.h> 71270891Strasz#include <dev/iscsi/iscsi_proto.h> 72270891Strasz#include <cam/ctl/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"); 87275310Straszstatic int debug = 1; 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); 152268688Smavstatic int cfiscsi_info(void *arg, struct sbuf *sb); 153284798Smavstatic int cfiscsi_lun_enable(void *arg, int lun_id); 154284798Smavstatic int cfiscsi_lun_disable(void *arg, int lun_id); 155255570Straszstatic int cfiscsi_ioctl(struct cdev *dev, 156255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td); 157255570Straszstatic void cfiscsi_datamove(union ctl_io *io); 158273310Smavstatic void cfiscsi_datamove_in(union ctl_io *io); 159273310Smavstatic void cfiscsi_datamove_out(union ctl_io *io); 160255570Straszstatic void cfiscsi_done(union ctl_io *io); 161255848Straszstatic bool cfiscsi_pdu_update_cmdsn(const struct icl_pdu *request); 162255570Straszstatic void cfiscsi_pdu_handle_nop_out(struct icl_pdu *request); 163255570Straszstatic void cfiscsi_pdu_handle_scsi_command(struct icl_pdu *request); 164255570Straszstatic void cfiscsi_pdu_handle_task_request(struct icl_pdu *request); 165255570Straszstatic void cfiscsi_pdu_handle_data_out(struct icl_pdu *request); 166255570Straszstatic void cfiscsi_pdu_handle_logout_request(struct icl_pdu *request); 167255570Straszstatic void cfiscsi_session_terminate(struct cfiscsi_session *cs); 168255570Straszstatic struct cfiscsi_target *cfiscsi_target_find(struct cfiscsi_softc 169279003Smav *softc, const char *name, uint16_t tag); 170268682Smavstatic struct cfiscsi_target *cfiscsi_target_find_or_create( 171279003Smav struct cfiscsi_softc *softc, const char *name, const char *alias, 172279003Smav uint16_t tag); 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 179268677Smavstatic struct ctl_frontend cfiscsi_frontend = 180268677Smav{ 181268677Smav .name = "iscsi", 182268677Smav .init = cfiscsi_init, 183268677Smav .ioctl = cfiscsi_ioctl, 184255570Strasz}; 185268677SmavCTL_FRONTEND_DECLARE(ctlcfiscsi, cfiscsi_frontend); 186269202StraszMODULE_DEPEND(ctlcfiscsi, icl, 1, 1, 1); 187255570Strasz 188255570Straszstatic struct icl_pdu * 189255570Straszcfiscsi_pdu_new_response(struct icl_pdu *request, int flags) 190255570Strasz{ 191255570Strasz 192276618Smav return (icl_pdu_new(request->ip_conn, flags)); 193255570Strasz} 194255570Strasz 195255848Straszstatic bool 196255570Straszcfiscsi_pdu_update_cmdsn(const struct icl_pdu *request) 197255570Strasz{ 198255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 199255570Strasz struct cfiscsi_session *cs; 200255570Strasz uint32_t cmdsn, expstatsn; 201255570Strasz 202255570Strasz cs = PDU_SESSION(request); 203255570Strasz 204255570Strasz /* 205255570Strasz * Every incoming PDU - not just NOP-Out - resets the ping timer. 206255570Strasz * The purpose of the timeout is to reset the connection when it stalls; 207255570Strasz * we don't want this to happen when NOP-In or NOP-Out ends up delayed 208255570Strasz * in some queue. 209255570Strasz * 210255570Strasz * XXX: Locking? 211255570Strasz */ 212255570Strasz cs->cs_timeout = 0; 213255570Strasz 214255570Strasz /* 215255570Strasz * Data-Out PDUs don't contain CmdSN. 216255570Strasz */ 217255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 218255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 219255848Strasz return (false); 220255570Strasz 221255570Strasz /* 222255570Strasz * We're only using fields common for all the request 223255570Strasz * (initiator -> target) PDUs. 224255570Strasz */ 225255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 226255570Strasz cmdsn = ntohl(bhssc->bhssc_cmdsn); 227255570Strasz expstatsn = ntohl(bhssc->bhssc_expstatsn); 228255570Strasz 229255570Strasz CFISCSI_SESSION_LOCK(cs); 230255570Strasz#if 0 231255570Strasz if (expstatsn != cs->cs_statsn) { 232255570Strasz CFISCSI_SESSION_DEBUG(cs, "received PDU with ExpStatSN %d, " 233255570Strasz "while current StatSN is %d", expstatsn, 234255570Strasz cs->cs_statsn); 235255570Strasz } 236255570Strasz#endif 237255570Strasz 238276613Smav if ((request->ip_bhs->bhs_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) { 239276613Smav /* 240276613Smav * The target MUST silently ignore any non-immediate command 241276613Smav * outside of this range. 242276613Smav */ 243276613Smav if (ISCSI_SNLT(cmdsn, cs->cs_cmdsn) || 244276613Smav ISCSI_SNGT(cmdsn, cs->cs_cmdsn + maxcmdsn_delta)) { 245276613Smav CFISCSI_SESSION_UNLOCK(cs); 246276613Smav CFISCSI_SESSION_WARN(cs, "received PDU with CmdSN %u, " 247276613Smav "while expected %u", cmdsn, cs->cs_cmdsn); 248276613Smav return (true); 249276613Smav } 250255570Strasz 251276613Smav /* 252276613Smav * We don't support multiple connections now, so any 253276613Smav * discontinuity in CmdSN means lost PDUs. Since we don't 254276613Smav * support PDU retransmission -- terminate the connection. 255276613Smav */ 256276613Smav if (cmdsn != cs->cs_cmdsn) { 257276613Smav CFISCSI_SESSION_UNLOCK(cs); 258276613Smav CFISCSI_SESSION_WARN(cs, "received PDU with CmdSN %u, " 259276613Smav "while expected %u; dropping connection", 260276613Smav cmdsn, cs->cs_cmdsn); 261276613Smav cfiscsi_session_terminate(cs); 262276613Smav return (true); 263276613Smav } 264255570Strasz cs->cs_cmdsn++; 265276613Smav } 266255570Strasz 267255570Strasz CFISCSI_SESSION_UNLOCK(cs); 268255848Strasz 269255848Strasz return (false); 270255570Strasz} 271255570Strasz 272255570Straszstatic void 273255570Straszcfiscsi_pdu_handle(struct icl_pdu *request) 274255570Strasz{ 275255570Strasz struct cfiscsi_session *cs; 276255848Strasz bool ignore; 277255570Strasz 278255570Strasz cs = PDU_SESSION(request); 279255570Strasz 280255848Strasz ignore = cfiscsi_pdu_update_cmdsn(request); 281255848Strasz if (ignore) { 282255848Strasz icl_pdu_free(request); 283255848Strasz return; 284255848Strasz } 285255570Strasz 286255570Strasz /* 287255570Strasz * Handle the PDU; this includes e.g. receiving the remaining 288255570Strasz * part of PDU and submitting the SCSI command to CTL 289255570Strasz * or queueing a reply. The handling routine is responsible 290255570Strasz * for freeing the PDU when it's no longer needed. 291255570Strasz */ 292255570Strasz switch (request->ip_bhs->bhs_opcode & 293255570Strasz ~ISCSI_BHS_OPCODE_IMMEDIATE) { 294255570Strasz case ISCSI_BHS_OPCODE_NOP_OUT: 295255570Strasz cfiscsi_pdu_handle_nop_out(request); 296255570Strasz break; 297255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 298255570Strasz cfiscsi_pdu_handle_scsi_command(request); 299255570Strasz break; 300255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 301255570Strasz cfiscsi_pdu_handle_task_request(request); 302255570Strasz break; 303255570Strasz case ISCSI_BHS_OPCODE_SCSI_DATA_OUT: 304255570Strasz cfiscsi_pdu_handle_data_out(request); 305255570Strasz break; 306255570Strasz case ISCSI_BHS_OPCODE_LOGOUT_REQUEST: 307255570Strasz cfiscsi_pdu_handle_logout_request(request); 308255570Strasz break; 309255570Strasz default: 310255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with unsupported " 311255570Strasz "opcode 0x%x; dropping connection", 312255570Strasz request->ip_bhs->bhs_opcode); 313256197Strasz icl_pdu_free(request); 314255570Strasz cfiscsi_session_terminate(cs); 315255570Strasz } 316255570Strasz 317255570Strasz} 318255570Strasz 319255570Straszstatic void 320255570Straszcfiscsi_receive_callback(struct icl_pdu *request) 321255570Strasz{ 322255570Strasz struct cfiscsi_session *cs; 323255570Strasz 324255570Strasz cs = PDU_SESSION(request); 325255570Strasz 326255570Strasz#ifdef ICL_KERNEL_PROXY 327255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 328255570Strasz if (cs->cs_login_pdu == NULL) 329255570Strasz cs->cs_login_pdu = request; 330255570Strasz else 331255570Strasz icl_pdu_free(request); 332255570Strasz cv_signal(&cs->cs_login_cv); 333255570Strasz return; 334255570Strasz } 335255570Strasz#endif 336255570Strasz 337255570Strasz cfiscsi_pdu_handle(request); 338255570Strasz} 339255570Strasz 340255570Straszstatic void 341255570Straszcfiscsi_error_callback(struct icl_conn *ic) 342255570Strasz{ 343255570Strasz struct cfiscsi_session *cs; 344255570Strasz 345255570Strasz cs = CONN_SESSION(ic); 346255570Strasz 347255570Strasz CFISCSI_SESSION_WARN(cs, "connection error; dropping connection"); 348255570Strasz cfiscsi_session_terminate(cs); 349255570Strasz} 350255570Strasz 351255570Straszstatic int 352255570Straszcfiscsi_pdu_prepare(struct icl_pdu *response) 353255570Strasz{ 354255570Strasz struct cfiscsi_session *cs; 355255570Strasz struct iscsi_bhs_scsi_response *bhssr; 356255570Strasz bool advance_statsn = true; 357255570Strasz 358255570Strasz cs = PDU_SESSION(response); 359255570Strasz 360255570Strasz CFISCSI_SESSION_LOCK_ASSERT(cs); 361255570Strasz 362255570Strasz /* 363255570Strasz * We're only using fields common for all the response 364255570Strasz * (target -> initiator) PDUs. 365255570Strasz */ 366255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 367255570Strasz 368255570Strasz /* 369255570Strasz * 10.8.3: "The StatSN for this connection is not advanced 370255570Strasz * after this PDU is sent." 371255570Strasz */ 372255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_R2T) 373255570Strasz advance_statsn = false; 374255570Strasz 375255570Strasz /* 376255570Strasz * 10.19.2: "However, when the Initiator Task Tag is set to 0xffffffff, 377255570Strasz * StatSN for the connection is not advanced after this PDU is sent." 378255570Strasz */ 379255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_NOP_IN && 380255570Strasz bhssr->bhssr_initiator_task_tag == 0xffffffff) 381255570Strasz advance_statsn = false; 382255570Strasz 383255570Strasz /* 384255570Strasz * See the comment below - StatSN is not meaningful and must 385255570Strasz * not be advanced. 386255570Strasz */ 387275881Smav if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_SCSI_DATA_IN && 388275881Smav (bhssr->bhssr_flags & BHSDI_FLAGS_S) == 0) 389255570Strasz advance_statsn = false; 390255570Strasz 391255570Strasz /* 392255570Strasz * 10.7.3: "The fields StatSN, Status, and Residual Count 393255570Strasz * only have meaningful content if the S bit is set to 1." 394255570Strasz */ 395275881Smav if (bhssr->bhssr_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN || 396275881Smav (bhssr->bhssr_flags & BHSDI_FLAGS_S)) 397255570Strasz bhssr->bhssr_statsn = htonl(cs->cs_statsn); 398255570Strasz bhssr->bhssr_expcmdsn = htonl(cs->cs_cmdsn); 399255570Strasz bhssr->bhssr_maxcmdsn = htonl(cs->cs_cmdsn + maxcmdsn_delta); 400255570Strasz 401255570Strasz if (advance_statsn) 402255570Strasz cs->cs_statsn++; 403255570Strasz 404255570Strasz return (0); 405255570Strasz} 406255570Strasz 407255570Straszstatic void 408255570Straszcfiscsi_pdu_queue(struct icl_pdu *response) 409255570Strasz{ 410255570Strasz struct cfiscsi_session *cs; 411255570Strasz 412255570Strasz cs = PDU_SESSION(response); 413255570Strasz 414255570Strasz CFISCSI_SESSION_LOCK(cs); 415255570Strasz cfiscsi_pdu_prepare(response); 416255570Strasz icl_pdu_queue(response); 417255570Strasz CFISCSI_SESSION_UNLOCK(cs); 418255570Strasz} 419255570Strasz 420255570Straszstatic uint32_t 421255570Straszcfiscsi_decode_lun(uint64_t encoded) 422255570Strasz{ 423255570Strasz uint8_t lun[8]; 424255570Strasz uint32_t result; 425255570Strasz 426255570Strasz /* 427255570Strasz * The LUN field in iSCSI PDUs may look like an ordinary 64 bit number, 428255570Strasz * but is in fact an evil, multidimensional structure defined 429255570Strasz * in SCSI Architecture Model 5 (SAM-5), section 4.6. 430255570Strasz */ 431255570Strasz memcpy(lun, &encoded, sizeof(lun)); 432255570Strasz switch (lun[0] & 0xC0) { 433255570Strasz case 0x00: 434255570Strasz if ((lun[0] & 0x3f) != 0 || lun[2] != 0 || lun[3] != 0 || 435255570Strasz lun[4] != 0 || lun[5] != 0 || lun[6] != 0 || lun[7] != 0) { 436255570Strasz CFISCSI_WARN("malformed LUN " 437255570Strasz "(peripheral device addressing method): 0x%jx", 438255570Strasz (uintmax_t)encoded); 439255570Strasz result = 0xffffffff; 440255570Strasz break; 441255570Strasz } 442255570Strasz result = lun[1]; 443255570Strasz break; 444255570Strasz case 0x40: 445255570Strasz if (lun[2] != 0 || lun[3] != 0 || lun[4] != 0 || lun[5] != 0 || 446255570Strasz lun[6] != 0 || lun[7] != 0) { 447255570Strasz CFISCSI_WARN("malformed LUN " 448255570Strasz "(flat address space addressing method): 0x%jx", 449255570Strasz (uintmax_t)encoded); 450255570Strasz result = 0xffffffff; 451255570Strasz break; 452255570Strasz } 453255570Strasz result = ((lun[0] & 0x3f) << 8) + lun[1]; 454255570Strasz break; 455255570Strasz case 0xC0: 456255570Strasz if (lun[0] != 0xD2 || lun[4] != 0 || lun[5] != 0 || 457255570Strasz lun[6] != 0 || lun[7] != 0) { 458255570Strasz CFISCSI_WARN("malformed LUN (extended flat " 459255570Strasz "address space addressing method): 0x%jx", 460255570Strasz (uintmax_t)encoded); 461255570Strasz result = 0xffffffff; 462255570Strasz break; 463255570Strasz } 464255570Strasz result = (lun[1] << 16) + (lun[2] << 8) + lun[3]; 465255570Strasz default: 466255570Strasz CFISCSI_WARN("unsupported LUN format 0x%jx", 467255570Strasz (uintmax_t)encoded); 468255570Strasz result = 0xffffffff; 469255570Strasz break; 470255570Strasz } 471255570Strasz 472255570Strasz return (result); 473255570Strasz} 474255570Strasz 475255570Straszstatic void 476255570Straszcfiscsi_pdu_handle_nop_out(struct icl_pdu *request) 477255570Strasz{ 478255570Strasz struct cfiscsi_session *cs; 479255570Strasz struct iscsi_bhs_nop_out *bhsno; 480255570Strasz struct iscsi_bhs_nop_in *bhsni; 481255570Strasz struct icl_pdu *response; 482256187Strasz void *data = NULL; 483256187Strasz size_t datasize; 484256187Strasz int error; 485255570Strasz 486255570Strasz cs = PDU_SESSION(request); 487255570Strasz bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 488255570Strasz 489255570Strasz if (bhsno->bhsno_initiator_task_tag == 0xffffffff) { 490255570Strasz /* 491255570Strasz * Nothing to do, iscsi_pdu_update_statsn() already 492255570Strasz * zeroed the timeout. 493255570Strasz */ 494255570Strasz icl_pdu_free(request); 495255570Strasz return; 496255570Strasz } 497255570Strasz 498256187Strasz datasize = icl_pdu_data_segment_length(request); 499256187Strasz if (datasize > 0) { 500256187Strasz data = malloc(datasize, M_CFISCSI, M_NOWAIT | M_ZERO); 501256187Strasz if (data == NULL) { 502256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 503256187Strasz "dropping connection"); 504256187Strasz icl_pdu_free(request); 505256187Strasz cfiscsi_session_terminate(cs); 506256187Strasz return; 507256187Strasz } 508256187Strasz icl_pdu_get_data(request, 0, data, datasize); 509256187Strasz } 510256187Strasz 511255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 512255570Strasz if (response == NULL) { 513256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 514256187Strasz "droppping connection"); 515256187Strasz free(data, M_CFISCSI); 516255570Strasz icl_pdu_free(request); 517256187Strasz cfiscsi_session_terminate(cs); 518255570Strasz return; 519255570Strasz } 520255570Strasz bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 521255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 522255570Strasz bhsni->bhsni_flags = 0x80; 523255570Strasz bhsni->bhsni_initiator_task_tag = bhsno->bhsno_initiator_task_tag; 524255570Strasz bhsni->bhsni_target_transfer_tag = 0xffffffff; 525256187Strasz if (datasize > 0) { 526256187Strasz error = icl_pdu_append_data(response, data, datasize, M_NOWAIT); 527256187Strasz if (error != 0) { 528256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 529256187Strasz "dropping connection"); 530256187Strasz free(data, M_CFISCSI); 531256187Strasz icl_pdu_free(request); 532256187Strasz icl_pdu_free(response); 533256187Strasz cfiscsi_session_terminate(cs); 534256187Strasz return; 535256187Strasz } 536256187Strasz free(data, M_CFISCSI); 537256187Strasz } 538255570Strasz 539255570Strasz icl_pdu_free(request); 540255570Strasz cfiscsi_pdu_queue(response); 541255570Strasz} 542255570Strasz 543255570Straszstatic void 544255570Straszcfiscsi_pdu_handle_scsi_command(struct icl_pdu *request) 545255570Strasz{ 546255570Strasz struct iscsi_bhs_scsi_command *bhssc; 547255570Strasz struct cfiscsi_session *cs; 548255570Strasz union ctl_io *io; 549255570Strasz int error; 550255570Strasz 551255570Strasz cs = PDU_SESSION(request); 552255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 553255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 554255570Strasz // bhssc->bhssc_initiator_task_tag); 555255570Strasz 556255570Strasz if (request->ip_data_len > 0 && cs->cs_immediate_data == false) { 557255570Strasz CFISCSI_SESSION_WARN(cs, "unsolicited data with " 558255570Strasz "ImmediateData=No; dropping connection"); 559256197Strasz icl_pdu_free(request); 560255570Strasz cfiscsi_session_terminate(cs); 561255570Strasz return; 562255570Strasz } 563268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 564255570Strasz ctl_zero_io(io); 565255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 566255570Strasz io->io_hdr.io_type = CTL_IO_SCSI; 567255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 568268682Smav io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 569255570Strasz io->io_hdr.nexus.targ_target.id = 0; 570255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhssc->bhssc_lun); 571255570Strasz io->scsiio.tag_num = bhssc->bhssc_initiator_task_tag; 572255570Strasz switch ((bhssc->bhssc_flags & BHSSC_FLAGS_ATTR)) { 573255570Strasz case BHSSC_FLAGS_ATTR_UNTAGGED: 574255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 575255570Strasz break; 576255570Strasz case BHSSC_FLAGS_ATTR_SIMPLE: 577255570Strasz io->scsiio.tag_type = CTL_TAG_SIMPLE; 578255570Strasz break; 579255570Strasz case BHSSC_FLAGS_ATTR_ORDERED: 580255570Strasz io->scsiio.tag_type = CTL_TAG_ORDERED; 581255570Strasz break; 582255570Strasz case BHSSC_FLAGS_ATTR_HOQ: 583255570Strasz io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 584255570Strasz break; 585255570Strasz case BHSSC_FLAGS_ATTR_ACA: 586255570Strasz io->scsiio.tag_type = CTL_TAG_ACA; 587255570Strasz break; 588255570Strasz default: 589255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 590255570Strasz CFISCSI_SESSION_WARN(cs, "unhandled tag type %d", 591255570Strasz bhssc->bhssc_flags & BHSSC_FLAGS_ATTR); 592255570Strasz break; 593255570Strasz } 594255570Strasz io->scsiio.cdb_len = sizeof(bhssc->bhssc_cdb); /* Which is 16. */ 595255570Strasz memcpy(io->scsiio.cdb, bhssc->bhssc_cdb, sizeof(bhssc->bhssc_cdb)); 596255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 597255570Strasz error = ctl_queue(io); 598255570Strasz if (error != CTL_RETVAL_COMPLETE) { 599256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 600256197Strasz "dropping connection", error); 601255570Strasz ctl_free_io(io); 602255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 603255570Strasz icl_pdu_free(request); 604256197Strasz cfiscsi_session_terminate(cs); 605255570Strasz } 606255570Strasz} 607255570Strasz 608255570Straszstatic void 609255570Straszcfiscsi_pdu_handle_task_request(struct icl_pdu *request) 610255570Strasz{ 611255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 612255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 613255570Strasz struct icl_pdu *response; 614255570Strasz struct cfiscsi_session *cs; 615255570Strasz union ctl_io *io; 616255570Strasz int error; 617255570Strasz 618255570Strasz cs = PDU_SESSION(request); 619255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 620268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 621255570Strasz ctl_zero_io(io); 622255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 623255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 624255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 625268682Smav io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 626255570Strasz io->io_hdr.nexus.targ_target.id = 0; 627255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhstmr->bhstmr_lun); 628255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 629255570Strasz 630255570Strasz switch (bhstmr->bhstmr_function & ~0x80) { 631255570Strasz case BHSTMR_FUNCTION_ABORT_TASK: 632255570Strasz#if 0 633255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK"); 634255570Strasz#endif 635255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 636255570Strasz io->taskio.tag_num = bhstmr->bhstmr_referenced_task_tag; 637255570Strasz break; 638268690Smav case BHSTMR_FUNCTION_ABORT_TASK_SET: 639268690Smav#if 0 640268690Smav CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK_SET"); 641268690Smav#endif 642268690Smav io->taskio.task_action = CTL_TASK_ABORT_TASK_SET; 643268690Smav break; 644255570Strasz case BHSTMR_FUNCTION_LOGICAL_UNIT_RESET: 645255570Strasz#if 0 646255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_LOGICAL_UNIT_RESET"); 647255570Strasz#endif 648255570Strasz io->taskio.task_action = CTL_TASK_LUN_RESET; 649255570Strasz break; 650264602Strasz case BHSTMR_FUNCTION_TARGET_WARM_RESET: 651255570Strasz#if 0 652264602Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_TARGET_WARM_RESET"); 653255570Strasz#endif 654264602Strasz io->taskio.task_action = CTL_TASK_TARGET_RESET; 655255570Strasz break; 656255570Strasz default: 657255570Strasz CFISCSI_SESSION_DEBUG(cs, "unsupported function 0x%x", 658255570Strasz bhstmr->bhstmr_function & ~0x80); 659255570Strasz ctl_free_io(io); 660255570Strasz 661255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 662255570Strasz if (response == NULL) { 663256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 664256197Strasz "dropping connection"); 665255570Strasz icl_pdu_free(request); 666256197Strasz cfiscsi_session_terminate(cs); 667255570Strasz return; 668255570Strasz } 669255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 670255570Strasz response->ip_bhs; 671255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 672255570Strasz bhstmr2->bhstmr_flags = 0x80; 673255570Strasz bhstmr2->bhstmr_response = 674255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 675255570Strasz bhstmr2->bhstmr_initiator_task_tag = 676255570Strasz bhstmr->bhstmr_initiator_task_tag; 677255570Strasz icl_pdu_free(request); 678255570Strasz cfiscsi_pdu_queue(response); 679255570Strasz return; 680255570Strasz } 681255570Strasz 682255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 683255570Strasz error = ctl_queue(io); 684255570Strasz if (error != CTL_RETVAL_COMPLETE) { 685256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 686256197Strasz "dropping connection", error); 687255570Strasz ctl_free_io(io); 688255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 689255570Strasz icl_pdu_free(request); 690256197Strasz cfiscsi_session_terminate(cs); 691255570Strasz } 692255570Strasz} 693255570Strasz 694255570Straszstatic bool 695255570Straszcfiscsi_handle_data_segment(struct icl_pdu *request, struct cfiscsi_data_wait *cdw) 696255570Strasz{ 697255570Strasz struct iscsi_bhs_data_out *bhsdo; 698255570Strasz struct cfiscsi_session *cs; 699255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 700256195Strasz size_t copy_len, len, off, buffer_offset; 701255570Strasz int ctl_sg_count; 702255570Strasz union ctl_io *io; 703255570Strasz 704255570Strasz cs = PDU_SESSION(request); 705255570Strasz 706255570Strasz KASSERT((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 707255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT || 708255570Strasz (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 709255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 710255570Strasz ("bad opcode 0x%x", request->ip_bhs->bhs_opcode)); 711255570Strasz 712255570Strasz /* 713265640Smav * We're only using fields common for Data-Out and SCSI Command PDUs. 714255570Strasz */ 715255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 716255570Strasz 717255570Strasz io = cdw->cdw_ctl_io; 718255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 719255570Strasz ("CTL_FLAG_DATA_IN")); 720255570Strasz 721255570Strasz#if 0 722255570Strasz CFISCSI_SESSION_DEBUG(cs, "received %zd bytes out of %d", 723255570Strasz request->ip_data_len, io->scsiio.kern_total_len); 724255570Strasz#endif 725255570Strasz 726255570Strasz if (io->scsiio.kern_sg_entries > 0) { 727255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 728255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 729255570Strasz } else { 730255570Strasz ctl_sglist = &ctl_sg_entry; 731255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 732255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 733255570Strasz ctl_sg_count = 1; 734255570Strasz } 735255570Strasz 736255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 737255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 738255570Strasz buffer_offset = ntohl(bhsdo->bhsdo_buffer_offset); 739255570Strasz else 740255570Strasz buffer_offset = 0; 741268141Smav len = icl_pdu_data_segment_length(request); 742255570Strasz 743255570Strasz /* 744255570Strasz * Make sure the offset, as sent by the initiator, matches the offset 745255570Strasz * we're supposed to be at in the scatter-gather list. 746255570Strasz */ 747268141Smav if (buffer_offset > 748268141Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled || 749268141Smav buffer_offset + len <= 750265640Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled) { 751255570Strasz CFISCSI_SESSION_WARN(cs, "received bad buffer offset %zd, " 752265640Smav "expected %zd; dropping connection", buffer_offset, 753265640Smav (size_t)io->scsiio.kern_rel_offset + 754255570Strasz (size_t)io->scsiio.ext_data_filled); 755265640Smav ctl_set_data_phase_error(&io->scsiio); 756255570Strasz cfiscsi_session_terminate(cs); 757255570Strasz return (true); 758255570Strasz } 759255570Strasz 760256195Strasz /* 761256195Strasz * This is the offset within the PDU data segment, as opposed 762256195Strasz * to buffer_offset, which is the offset within the task (SCSI 763256195Strasz * command). 764256195Strasz */ 765268141Smav off = io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled - 766268141Smav buffer_offset; 767256195Strasz 768256195Strasz /* 769256195Strasz * Iterate over the scatter/gather segments, filling them with data 770256195Strasz * from the PDU data segment. Note that this can get called multiple 771256195Strasz * times for one SCSI command; the cdw structure holds state for the 772256195Strasz * scatter/gather list. 773256195Strasz */ 774255570Strasz for (;;) { 775255570Strasz KASSERT(cdw->cdw_sg_index < ctl_sg_count, 776255570Strasz ("cdw->cdw_sg_index >= ctl_sg_count")); 777255570Strasz if (cdw->cdw_sg_len == 0) { 778255570Strasz cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 779255570Strasz cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 780255570Strasz } 781256195Strasz KASSERT(off <= len, ("len > off")); 782256195Strasz copy_len = len - off; 783255570Strasz if (copy_len > cdw->cdw_sg_len) 784255570Strasz copy_len = cdw->cdw_sg_len; 785255570Strasz 786255570Strasz icl_pdu_get_data(request, off, cdw->cdw_sg_addr, copy_len); 787255570Strasz cdw->cdw_sg_addr += copy_len; 788255570Strasz cdw->cdw_sg_len -= copy_len; 789255570Strasz off += copy_len; 790255570Strasz io->scsiio.ext_data_filled += copy_len; 791255570Strasz 792255570Strasz if (cdw->cdw_sg_len == 0) { 793256195Strasz /* 794256195Strasz * End of current segment. 795256195Strasz */ 796256195Strasz if (cdw->cdw_sg_index == ctl_sg_count - 1) { 797256195Strasz /* 798256195Strasz * Last segment in scatter/gather list. 799256195Strasz */ 800255570Strasz break; 801256195Strasz } 802255570Strasz cdw->cdw_sg_index++; 803255570Strasz } 804256195Strasz 805256195Strasz if (off == len) { 806256195Strasz /* 807256195Strasz * End of PDU payload. 808256195Strasz */ 809255570Strasz break; 810256195Strasz } 811255570Strasz } 812255570Strasz 813256195Strasz if (len > off) { 814265640Smav /* 815265640Smav * In case of unsolicited data, it's possible that the buffer 816265640Smav * provided by CTL is smaller than negotiated FirstBurstLength. 817265640Smav * Just ignore the superfluous data; will ask for them with R2T 818265640Smav * on next call to cfiscsi_datamove(). 819265640Smav * 820265640Smav * This obviously can only happen with SCSI Command PDU. 821265640Smav */ 822265640Smav if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 823268141Smav ISCSI_BHS_OPCODE_SCSI_COMMAND) 824265640Smav return (true); 825265640Smav 826255570Strasz CFISCSI_SESSION_WARN(cs, "received too much data: got %zd bytes, " 827265640Smav "expected %zd; dropping connection", 828265640Smav icl_pdu_data_segment_length(request), off); 829265640Smav ctl_set_data_phase_error(&io->scsiio); 830255570Strasz cfiscsi_session_terminate(cs); 831255570Strasz return (true); 832255570Strasz } 833255570Strasz 834273310Smav if (io->scsiio.ext_data_filled == cdw->cdw_r2t_end && 835265640Smav (bhsdo->bhsdo_flags & BHSDO_FLAGS_F) == 0) { 836265640Smav CFISCSI_SESSION_WARN(cs, "got the final packet without " 837265640Smav "the F flag; flags = 0x%x; dropping connection", 838265640Smav bhsdo->bhsdo_flags); 839265640Smav ctl_set_data_phase_error(&io->scsiio); 840265640Smav cfiscsi_session_terminate(cs); 841265640Smav return (true); 842265640Smav } 843265640Smav 844273310Smav if (io->scsiio.ext_data_filled != cdw->cdw_r2t_end && 845265640Smav (bhsdo->bhsdo_flags & BHSDO_FLAGS_F) != 0) { 846265640Smav if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 847265640Smav ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 848265640Smav CFISCSI_SESSION_WARN(cs, "got the final packet, but the " 849265640Smav "transmitted size was %zd bytes instead of %d; " 850265640Smav "dropping connection", 851265640Smav (size_t)io->scsiio.ext_data_filled, 852273310Smav cdw->cdw_r2t_end); 853265640Smav ctl_set_data_phase_error(&io->scsiio); 854255570Strasz cfiscsi_session_terminate(cs); 855255570Strasz return (true); 856265640Smav } else { 857265640Smav /* 858265640Smav * For SCSI Command PDU, this just means we need to 859265640Smav * solicit more data by sending R2T. 860265640Smav */ 861265640Smav return (false); 862255570Strasz } 863265640Smav } 864255570Strasz 865273310Smav if (io->scsiio.ext_data_filled == cdw->cdw_r2t_end) { 866255570Strasz#if 0 867255570Strasz CFISCSI_SESSION_DEBUG(cs, "no longer expecting Data-Out with target " 868255570Strasz "transfer tag 0x%x", cdw->cdw_target_transfer_tag); 869255570Strasz#endif 870255570Strasz 871255570Strasz return (true); 872255570Strasz } 873255570Strasz 874255570Strasz return (false); 875255570Strasz} 876255570Strasz 877255570Straszstatic void 878255570Straszcfiscsi_pdu_handle_data_out(struct icl_pdu *request) 879255570Strasz{ 880255570Strasz struct iscsi_bhs_data_out *bhsdo; 881255570Strasz struct cfiscsi_session *cs; 882255570Strasz struct cfiscsi_data_wait *cdw = NULL; 883255570Strasz union ctl_io *io; 884255570Strasz bool done; 885255570Strasz 886255570Strasz cs = PDU_SESSION(request); 887255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 888255570Strasz 889255570Strasz CFISCSI_SESSION_LOCK(cs); 890255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) { 891255570Strasz#if 0 892255570Strasz CFISCSI_SESSION_DEBUG(cs, "have ttt 0x%x, itt 0x%x; looking for " 893255570Strasz "ttt 0x%x, itt 0x%x", 894255570Strasz bhsdo->bhsdo_target_transfer_tag, 895255570Strasz bhsdo->bhsdo_initiator_task_tag, 896255570Strasz cdw->cdw_target_transfer_tag, cdw->cdw_initiator_task_tag)); 897255570Strasz#endif 898255570Strasz if (bhsdo->bhsdo_target_transfer_tag == 899255570Strasz cdw->cdw_target_transfer_tag) 900255570Strasz break; 901255570Strasz } 902255570Strasz CFISCSI_SESSION_UNLOCK(cs); 903255570Strasz if (cdw == NULL) { 904255570Strasz CFISCSI_SESSION_WARN(cs, "data transfer tag 0x%x, initiator task tag " 905256197Strasz "0x%x, not found; dropping connection", 906256197Strasz bhsdo->bhsdo_target_transfer_tag, bhsdo->bhsdo_initiator_task_tag); 907255570Strasz icl_pdu_free(request); 908255570Strasz cfiscsi_session_terminate(cs); 909255570Strasz return; 910255570Strasz } 911255570Strasz 912276613Smav if (cdw->cdw_datasn != ntohl(bhsdo->bhsdo_datasn)) { 913276613Smav CFISCSI_SESSION_WARN(cs, "received Data-Out PDU with " 914276613Smav "DataSN %u, while expected %u; dropping connection", 915276613Smav ntohl(bhsdo->bhsdo_datasn), cdw->cdw_datasn); 916276613Smav icl_pdu_free(request); 917276613Smav cfiscsi_session_terminate(cs); 918276613Smav return; 919276613Smav } 920276613Smav cdw->cdw_datasn++; 921276613Smav 922255570Strasz io = cdw->cdw_ctl_io; 923255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 924255570Strasz ("CTL_FLAG_DATA_IN")); 925255570Strasz 926255570Strasz done = cfiscsi_handle_data_segment(request, cdw); 927255570Strasz if (done) { 928255570Strasz CFISCSI_SESSION_LOCK(cs); 929255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 930255570Strasz CFISCSI_SESSION_UNLOCK(cs); 931273310Smav done = (io->scsiio.ext_data_filled != cdw->cdw_r2t_end || 932273310Smav io->scsiio.ext_data_filled == io->scsiio.kern_data_len); 933255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 934273310Smav if (done) 935273310Smav io->scsiio.be_move_done(io); 936273310Smav else 937273310Smav cfiscsi_datamove_out(io); 938255570Strasz } 939255570Strasz 940255570Strasz icl_pdu_free(request); 941255570Strasz} 942255570Strasz 943255570Straszstatic void 944255570Straszcfiscsi_pdu_handle_logout_request(struct icl_pdu *request) 945255570Strasz{ 946255570Strasz struct iscsi_bhs_logout_request *bhslr; 947255570Strasz struct iscsi_bhs_logout_response *bhslr2; 948255570Strasz struct icl_pdu *response; 949255570Strasz struct cfiscsi_session *cs; 950255570Strasz 951255570Strasz cs = PDU_SESSION(request); 952255570Strasz bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 953255570Strasz switch (bhslr->bhslr_reason & 0x7f) { 954255570Strasz case BHSLR_REASON_CLOSE_SESSION: 955255570Strasz case BHSLR_REASON_CLOSE_CONNECTION: 956255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 957255570Strasz if (response == NULL) { 958256197Strasz CFISCSI_SESSION_DEBUG(cs, "failed to allocate memory"); 959255570Strasz icl_pdu_free(request); 960255570Strasz cfiscsi_session_terminate(cs); 961255570Strasz return; 962255570Strasz } 963255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 964255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 965255570Strasz bhslr2->bhslr_flags = 0x80; 966255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_CLOSED_SUCCESSFULLY; 967255570Strasz bhslr2->bhslr_initiator_task_tag = 968255570Strasz bhslr->bhslr_initiator_task_tag; 969255570Strasz icl_pdu_free(request); 970255570Strasz cfiscsi_pdu_queue(response); 971255570Strasz cfiscsi_session_terminate(cs); 972255570Strasz break; 973255570Strasz case BHSLR_REASON_REMOVE_FOR_RECOVERY: 974255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 975255570Strasz if (response == NULL) { 976256197Strasz CFISCSI_SESSION_WARN(cs, 977256197Strasz "failed to allocate memory; dropping connection"); 978255570Strasz icl_pdu_free(request); 979255570Strasz cfiscsi_session_terminate(cs); 980255570Strasz return; 981255570Strasz } 982255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 983255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 984255570Strasz bhslr2->bhslr_flags = 0x80; 985255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_RECOVERY_NOT_SUPPORTED; 986255570Strasz bhslr2->bhslr_initiator_task_tag = 987255570Strasz bhslr->bhslr_initiator_task_tag; 988255570Strasz icl_pdu_free(request); 989255570Strasz cfiscsi_pdu_queue(response); 990255570Strasz break; 991255570Strasz default: 992255570Strasz CFISCSI_SESSION_WARN(cs, "invalid reason 0%x; dropping connection", 993255570Strasz bhslr->bhslr_reason); 994255570Strasz icl_pdu_free(request); 995255570Strasz cfiscsi_session_terminate(cs); 996255570Strasz break; 997255570Strasz } 998255570Strasz} 999255570Strasz 1000255570Straszstatic void 1001255570Straszcfiscsi_callout(void *context) 1002255570Strasz{ 1003255570Strasz struct icl_pdu *cp; 1004255570Strasz struct iscsi_bhs_nop_in *bhsni; 1005255570Strasz struct cfiscsi_session *cs; 1006255570Strasz 1007255570Strasz cs = context; 1008255570Strasz 1009255570Strasz if (cs->cs_terminating) 1010255570Strasz return; 1011255570Strasz 1012255570Strasz callout_schedule(&cs->cs_callout, 1 * hz); 1013255570Strasz 1014265497Strasz atomic_add_int(&cs->cs_timeout, 1); 1015255570Strasz 1016255570Strasz#ifdef ICL_KERNEL_PROXY 1017255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 1018273307Smav if (login_timeout > 0 && cs->cs_timeout > login_timeout) { 1019255570Strasz CFISCSI_SESSION_WARN(cs, "login timed out after " 1020255570Strasz "%d seconds; dropping connection", cs->cs_timeout); 1021255570Strasz cfiscsi_session_terminate(cs); 1022255570Strasz } 1023255570Strasz return; 1024255570Strasz } 1025255570Strasz#endif 1026255570Strasz 1027271618Strasz if (ping_timeout <= 0) { 1028271618Strasz /* 1029271618Strasz * Pings are disabled. Don't send NOP-In in this case; 1030271618Strasz * user might have disabled pings to work around problems 1031271618Strasz * with certain initiators that can't properly handle 1032271618Strasz * NOP-In, such as iPXE. Reset the timeout, to avoid 1033271618Strasz * triggering reconnection, should the user decide to 1034271618Strasz * reenable them. 1035271618Strasz */ 1036271618Strasz cs->cs_timeout = 0; 1037271618Strasz return; 1038271618Strasz } 1039271618Strasz 1040255570Strasz if (cs->cs_timeout >= ping_timeout) { 1041255570Strasz CFISCSI_SESSION_WARN(cs, "no ping reply (NOP-Out) after %d seconds; " 1042255570Strasz "dropping connection", ping_timeout); 1043255570Strasz cfiscsi_session_terminate(cs); 1044255570Strasz return; 1045255570Strasz } 1046255570Strasz 1047255570Strasz /* 1048255570Strasz * If the ping was reset less than one second ago - which means 1049255570Strasz * that we've received some PDU during the last second - assume 1050255570Strasz * the traffic flows correctly and don't bother sending a NOP-Out. 1051255570Strasz * 1052255570Strasz * (It's 2 - one for one second, and one for incrementing is_timeout 1053255570Strasz * earlier in this routine.) 1054255570Strasz */ 1055255570Strasz if (cs->cs_timeout < 2) 1056255570Strasz return; 1057255570Strasz 1058276618Smav cp = icl_pdu_new(cs->cs_conn, M_NOWAIT); 1059255824Strasz if (cp == NULL) { 1060256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory"); 1061255824Strasz return; 1062255824Strasz } 1063255570Strasz bhsni = (struct iscsi_bhs_nop_in *)cp->ip_bhs; 1064255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 1065255570Strasz bhsni->bhsni_flags = 0x80; 1066255570Strasz bhsni->bhsni_initiator_task_tag = 0xffffffff; 1067255570Strasz 1068255570Strasz cfiscsi_pdu_queue(cp); 1069255570Strasz} 1070255570Strasz 1071255570Straszstatic void 1072255570Straszcfiscsi_session_terminate_tasks(struct cfiscsi_session *cs) 1073255570Strasz{ 1074268690Smav struct cfiscsi_data_wait *cdw; 1075255570Strasz union ctl_io *io; 1076275203Smav int error, last, wait; 1077255570Strasz 1078275494Smav if (cs->cs_target == NULL) 1079275494Smav return; /* No target yet, so nothing to do. */ 1080268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 1081255570Strasz ctl_zero_io(io); 1082268690Smav io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = cs; 1083255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1084255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1085268682Smav io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 1086255570Strasz io->io_hdr.nexus.targ_target.id = 0; 1087268690Smav io->io_hdr.nexus.targ_lun = 0; 1088255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1089268690Smav io->taskio.task_action = CTL_TASK_I_T_NEXUS_RESET; 1090275203Smav wait = cs->cs_outstanding_ctl_pdus; 1091268690Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1092255570Strasz error = ctl_queue(io); 1093255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1094255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1095268690Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 1096255570Strasz ctl_free_io(io); 1097255570Strasz } 1098268690Smav 1099255570Strasz CFISCSI_SESSION_LOCK(cs); 1100268690Smav while ((cdw = TAILQ_FIRST(&cs->cs_waiting_for_data_out)) != NULL) { 1101268690Smav TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 1102268690Smav CFISCSI_SESSION_UNLOCK(cs); 1103268259Smav /* 1104268259Smav * Set nonzero port status; this prevents backends from 1105268259Smav * assuming that the data transfer actually succeeded 1106268259Smav * and writing uninitialized data to disk. 1107268259Smav */ 1108268259Smav cdw->cdw_ctl_io->scsiio.io_hdr.port_status = 42; 1109255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 1110255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 1111268690Smav CFISCSI_SESSION_LOCK(cs); 1112255570Strasz } 1113255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1114268259Smav 1115268259Smav /* 1116268259Smav * Wait for CTL to terminate all the tasks. 1117268259Smav */ 1118275203Smav if (wait > 0) 1119275203Smav CFISCSI_SESSION_WARN(cs, 1120275203Smav "waiting for CTL to terminate %d tasks", wait); 1121268259Smav for (;;) { 1122268259Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1123268259Smav last = refcount_release(&cs->cs_outstanding_ctl_pdus); 1124268259Smav if (last != 0) 1125268259Smav break; 1126268691Smav tsleep(__DEVOLATILE(void *, &cs->cs_outstanding_ctl_pdus), 1127268691Smav 0, "cfiscsi_terminate", hz / 100); 1128268259Smav } 1129275203Smav if (wait > 0) 1130275203Smav CFISCSI_SESSION_WARN(cs, "tasks terminated"); 1131255570Strasz} 1132255570Strasz 1133255570Straszstatic void 1134255570Straszcfiscsi_maintenance_thread(void *arg) 1135255570Strasz{ 1136255570Strasz struct cfiscsi_session *cs; 1137255570Strasz 1138255570Strasz cs = arg; 1139255570Strasz 1140255570Strasz for (;;) { 1141255570Strasz CFISCSI_SESSION_LOCK(cs); 1142255570Strasz if (cs->cs_terminating == false) 1143255570Strasz cv_wait(&cs->cs_maintenance_cv, &cs->cs_lock); 1144255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1145255570Strasz 1146255570Strasz if (cs->cs_terminating) { 1147268259Smav 1148268259Smav /* 1149268259Smav * We used to wait up to 30 seconds to deliver queued 1150268259Smav * PDUs to the initiator. We also tried hard to deliver 1151268259Smav * SCSI Responses for the aborted PDUs. We don't do 1152268259Smav * that anymore. We might need to revisit that. 1153268259Smav */ 1154255570Strasz callout_drain(&cs->cs_callout); 1155255570Strasz icl_conn_close(cs->cs_conn); 1156255570Strasz 1157255570Strasz /* 1158268259Smav * At this point ICL receive thread is no longer 1159268259Smav * running; no new tasks can be queued. 1160255570Strasz */ 1161268259Smav cfiscsi_session_terminate_tasks(cs); 1162255570Strasz cfiscsi_session_delete(cs); 1163255570Strasz kthread_exit(); 1164255570Strasz return; 1165255570Strasz } 1166255570Strasz CFISCSI_SESSION_DEBUG(cs, "nothing to do"); 1167255570Strasz } 1168255570Strasz} 1169255570Strasz 1170255570Straszstatic void 1171255570Straszcfiscsi_session_terminate(struct cfiscsi_session *cs) 1172255570Strasz{ 1173255570Strasz 1174268258Smav if (cs->cs_terminating) 1175255570Strasz return; 1176268258Smav cs->cs_terminating = true; 1177255570Strasz cv_signal(&cs->cs_maintenance_cv); 1178265510Strasz#ifdef ICL_KERNEL_PROXY 1179265510Strasz cv_signal(&cs->cs_login_cv); 1180265510Strasz#endif 1181255570Strasz} 1182255570Strasz 1183255570Straszstatic int 1184255570Straszcfiscsi_session_register_initiator(struct cfiscsi_session *cs) 1185255570Strasz{ 1186268692Smav struct cfiscsi_target *ct; 1187268692Smav char *name; 1188268692Smav int i; 1189255570Strasz 1190255570Strasz KASSERT(cs->cs_ctl_initid == -1, ("already registered")); 1191255570Strasz 1192268692Smav ct = cs->cs_target; 1193268692Smav name = strdup(cs->cs_initiator_id, M_CTL); 1194268692Smav i = ctl_add_initiator(&ct->ct_port, -1, 0, name); 1195268692Smav if (i < 0) { 1196268692Smav CFISCSI_SESSION_WARN(cs, "ctl_add_initiator failed with error %d", 1197268692Smav i); 1198268692Smav cs->cs_ctl_initid = -1; 1199255570Strasz return (1); 1200255570Strasz } 1201268692Smav cs->cs_ctl_initid = i; 1202255570Strasz#if 0 1203268692Smav CFISCSI_SESSION_DEBUG(cs, "added initiator id %d", i); 1204255570Strasz#endif 1205255570Strasz 1206255570Strasz return (0); 1207255570Strasz} 1208255570Strasz 1209255570Straszstatic void 1210255570Straszcfiscsi_session_unregister_initiator(struct cfiscsi_session *cs) 1211255570Strasz{ 1212255570Strasz int error; 1213255570Strasz 1214255570Strasz if (cs->cs_ctl_initid == -1) 1215255570Strasz return; 1216255570Strasz 1217268692Smav error = ctl_remove_initiator(&cs->cs_target->ct_port, cs->cs_ctl_initid); 1218255570Strasz if (error != 0) { 1219255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_remove_initiator failed with error %d", 1220255570Strasz error); 1221255570Strasz } 1222255570Strasz cs->cs_ctl_initid = -1; 1223255570Strasz} 1224255570Strasz 1225255570Straszstatic struct cfiscsi_session * 1226255570Straszcfiscsi_session_new(struct cfiscsi_softc *softc) 1227255570Strasz{ 1228255570Strasz struct cfiscsi_session *cs; 1229255570Strasz int error; 1230255570Strasz 1231255570Strasz cs = malloc(sizeof(*cs), M_CFISCSI, M_NOWAIT | M_ZERO); 1232255570Strasz if (cs == NULL) { 1233255570Strasz CFISCSI_WARN("malloc failed"); 1234255570Strasz return (NULL); 1235255570Strasz } 1236255570Strasz cs->cs_ctl_initid = -1; 1237255570Strasz 1238255570Strasz refcount_init(&cs->cs_outstanding_ctl_pdus, 0); 1239255570Strasz TAILQ_INIT(&cs->cs_waiting_for_data_out); 1240255570Strasz mtx_init(&cs->cs_lock, "cfiscsi_lock", NULL, MTX_DEF); 1241255570Strasz cv_init(&cs->cs_maintenance_cv, "cfiscsi_mt"); 1242255570Strasz#ifdef ICL_KERNEL_PROXY 1243255570Strasz cv_init(&cs->cs_login_cv, "cfiscsi_login"); 1244255570Strasz#endif 1245255570Strasz 1246265496Strasz cs->cs_conn = icl_conn_new("cfiscsi", &cs->cs_lock); 1247255570Strasz cs->cs_conn->ic_receive = cfiscsi_receive_callback; 1248255570Strasz cs->cs_conn->ic_error = cfiscsi_error_callback; 1249255570Strasz cs->cs_conn->ic_prv0 = cs; 1250255570Strasz 1251255570Strasz error = kthread_add(cfiscsi_maintenance_thread, cs, NULL, NULL, 0, 0, "cfiscsimt"); 1252255570Strasz if (error != 0) { 1253255570Strasz CFISCSI_SESSION_WARN(cs, "kthread_add(9) failed with error %d", error); 1254255570Strasz free(cs, M_CFISCSI); 1255255570Strasz return (NULL); 1256255570Strasz } 1257255570Strasz 1258255570Strasz mtx_lock(&softc->lock); 1259275494Smav cs->cs_id = ++softc->last_session_id; 1260255570Strasz TAILQ_INSERT_TAIL(&softc->sessions, cs, cs_next); 1261255570Strasz mtx_unlock(&softc->lock); 1262255570Strasz 1263255570Strasz /* 1264255570Strasz * Start pinging the initiator. 1265255570Strasz */ 1266255570Strasz callout_init(&cs->cs_callout, 1); 1267255570Strasz callout_reset(&cs->cs_callout, 1 * hz, cfiscsi_callout, cs); 1268255570Strasz 1269255570Strasz return (cs); 1270255570Strasz} 1271255570Strasz 1272255570Straszstatic void 1273255570Straszcfiscsi_session_delete(struct cfiscsi_session *cs) 1274255570Strasz{ 1275255570Strasz struct cfiscsi_softc *softc; 1276255570Strasz 1277255570Strasz softc = &cfiscsi_softc; 1278255570Strasz 1279255570Strasz KASSERT(cs->cs_outstanding_ctl_pdus == 0, 1280255570Strasz ("destroying session with outstanding CTL pdus")); 1281255570Strasz KASSERT(TAILQ_EMPTY(&cs->cs_waiting_for_data_out), 1282255570Strasz ("destroying session with non-empty queue")); 1283255570Strasz 1284255570Strasz cfiscsi_session_unregister_initiator(cs); 1285255570Strasz if (cs->cs_target != NULL) 1286255570Strasz cfiscsi_target_release(cs->cs_target); 1287255570Strasz icl_conn_close(cs->cs_conn); 1288255570Strasz icl_conn_free(cs->cs_conn); 1289255570Strasz 1290255570Strasz mtx_lock(&softc->lock); 1291255570Strasz TAILQ_REMOVE(&softc->sessions, cs, cs_next); 1292275495Smav cv_signal(&softc->sessions_cv); 1293255570Strasz mtx_unlock(&softc->lock); 1294255570Strasz 1295255570Strasz free(cs, M_CFISCSI); 1296255570Strasz} 1297255570Strasz 1298255570Straszint 1299255570Straszcfiscsi_init(void) 1300255570Strasz{ 1301255570Strasz struct cfiscsi_softc *softc; 1302255570Strasz int retval; 1303255570Strasz 1304255570Strasz softc = &cfiscsi_softc; 1305255570Strasz retval = 0; 1306255570Strasz bzero(softc, sizeof(*softc)); 1307255570Strasz mtx_init(&softc->lock, "cfiscsi", NULL, MTX_DEF); 1308255570Strasz 1309275495Smav cv_init(&softc->sessions_cv, "cfiscsi_sessions"); 1310255570Strasz#ifdef ICL_KERNEL_PROXY 1311255570Strasz cv_init(&softc->accept_cv, "cfiscsi_accept"); 1312255570Strasz#endif 1313255570Strasz TAILQ_INIT(&softc->sessions); 1314255570Strasz TAILQ_INIT(&softc->targets); 1315255570Strasz 1316255570Strasz cfiscsi_data_wait_zone = uma_zcreate("cfiscsi_data_wait", 1317255570Strasz sizeof(struct cfiscsi_data_wait), NULL, NULL, NULL, NULL, 1318256058Strasz UMA_ALIGN_PTR, 0); 1319255570Strasz 1320255570Strasz return (0); 1321255570Strasz} 1322255570Strasz 1323255570Strasz#ifdef ICL_KERNEL_PROXY 1324255570Straszstatic void 1325265513Straszcfiscsi_accept(struct socket *so, struct sockaddr *sa, int portal_id) 1326255570Strasz{ 1327255570Strasz struct cfiscsi_session *cs; 1328255570Strasz 1329255570Strasz cs = cfiscsi_session_new(&cfiscsi_softc); 1330255570Strasz if (cs == NULL) { 1331255570Strasz CFISCSI_WARN("failed to create session"); 1332255570Strasz return; 1333255570Strasz } 1334255570Strasz 1335255570Strasz icl_conn_handoff_sock(cs->cs_conn, so); 1336265513Strasz cs->cs_initiator_sa = sa; 1337265509Strasz cs->cs_portal_id = portal_id; 1338255570Strasz cs->cs_waiting_for_ctld = true; 1339255570Strasz cv_signal(&cfiscsi_softc.accept_cv); 1340255570Strasz} 1341255570Strasz#endif 1342255570Strasz 1343255570Straszstatic void 1344255570Straszcfiscsi_online(void *arg) 1345255570Strasz{ 1346255570Strasz struct cfiscsi_softc *softc; 1347268682Smav struct cfiscsi_target *ct; 1348268682Smav int online; 1349255570Strasz 1350268682Smav ct = (struct cfiscsi_target *)arg; 1351268682Smav softc = ct->ct_softc; 1352255570Strasz 1353268682Smav mtx_lock(&softc->lock); 1354268682Smav if (ct->ct_online) { 1355268682Smav mtx_unlock(&softc->lock); 1356268682Smav return; 1357268682Smav } 1358268682Smav ct->ct_online = 1; 1359268682Smav online = softc->online++; 1360268682Smav mtx_unlock(&softc->lock); 1361268682Smav if (online > 0) 1362268682Smav return; 1363268682Smav 1364255570Strasz#ifdef ICL_KERNEL_PROXY 1365255570Strasz if (softc->listener != NULL) 1366255570Strasz icl_listen_free(softc->listener); 1367255570Strasz softc->listener = icl_listen_new(cfiscsi_accept); 1368255570Strasz#endif 1369255570Strasz} 1370255570Strasz 1371255570Straszstatic void 1372255570Straszcfiscsi_offline(void *arg) 1373255570Strasz{ 1374255570Strasz struct cfiscsi_softc *softc; 1375268682Smav struct cfiscsi_target *ct; 1376255570Strasz struct cfiscsi_session *cs; 1377268682Smav int online; 1378255570Strasz 1379268682Smav ct = (struct cfiscsi_target *)arg; 1380268682Smav softc = ct->ct_softc; 1381255570Strasz 1382268682Smav mtx_lock(&softc->lock); 1383268682Smav if (!ct->ct_online) { 1384268682Smav mtx_unlock(&softc->lock); 1385268682Smav return; 1386268682Smav } 1387268682Smav ct->ct_online = 0; 1388268682Smav online = --softc->online; 1389255570Strasz 1390268682Smav TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1391268682Smav if (cs->cs_target == ct) 1392268682Smav cfiscsi_session_terminate(cs); 1393268682Smav } 1394275495Smav do { 1395275495Smav TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1396275495Smav if (cs->cs_target == ct) 1397275495Smav break; 1398275495Smav } 1399275495Smav if (cs != NULL) 1400275495Smav cv_wait(&softc->sessions_cv, &softc->lock); 1401275495Smav } while (cs != NULL && ct->ct_online == 0); 1402255570Strasz mtx_unlock(&softc->lock); 1403268682Smav if (online > 0) 1404268682Smav return; 1405255570Strasz 1406255570Strasz#ifdef ICL_KERNEL_PROXY 1407255570Strasz icl_listen_free(softc->listener); 1408255570Strasz softc->listener = NULL; 1409255570Strasz#endif 1410255570Strasz} 1411255570Strasz 1412268688Smavstatic int 1413268688Smavcfiscsi_info(void *arg, struct sbuf *sb) 1414268688Smav{ 1415268688Smav struct cfiscsi_target *ct = (struct cfiscsi_target *)arg; 1416268688Smav int retval; 1417268688Smav 1418268688Smav retval = sbuf_printf(sb, "\t<cfiscsi_state>%d</cfiscsi_state>\n", 1419268688Smav ct->ct_state); 1420268688Smav return (retval); 1421268688Smav} 1422268688Smav 1423255570Straszstatic void 1424255570Straszcfiscsi_ioctl_handoff(struct ctl_iscsi *ci) 1425255570Strasz{ 1426255570Strasz struct cfiscsi_softc *softc; 1427268691Smav struct cfiscsi_session *cs, *cs2; 1428255570Strasz struct cfiscsi_target *ct; 1429255570Strasz struct ctl_iscsi_handoff_params *cihp; 1430255570Strasz int error; 1431255570Strasz 1432255570Strasz cihp = (struct ctl_iscsi_handoff_params *)&(ci->data); 1433255570Strasz softc = &cfiscsi_softc; 1434255570Strasz 1435255570Strasz CFISCSI_DEBUG("new connection from %s (%s) to %s", 1436255570Strasz cihp->initiator_name, cihp->initiator_addr, 1437255570Strasz cihp->target_name); 1438255570Strasz 1439279003Smav ct = cfiscsi_target_find(softc, cihp->target_name, 1440279003Smav cihp->portal_group_tag); 1441268682Smav if (ct == NULL) { 1442255570Strasz ci->status = CTL_ISCSI_ERROR; 1443255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1444268682Smav "%s: target not found", __func__); 1445255570Strasz return; 1446255570Strasz } 1447255570Strasz 1448255570Strasz#ifdef ICL_KERNEL_PROXY 1449265507Strasz if (cihp->socket > 0 && cihp->connection_id > 0) { 1450265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1451265507Strasz "both socket and connection_id set"); 1452255570Strasz ci->status = CTL_ISCSI_ERROR; 1453264523Smav cfiscsi_target_release(ct); 1454255570Strasz return; 1455255570Strasz } 1456265507Strasz if (cihp->socket == 0) { 1457265507Strasz mtx_lock(&cfiscsi_softc.lock); 1458265507Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1459275494Smav if (cs->cs_id == cihp->connection_id) 1460265507Strasz break; 1461265507Strasz } 1462265507Strasz if (cs == NULL) { 1463265507Strasz mtx_unlock(&cfiscsi_softc.lock); 1464265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1465265507Strasz "connection not found"); 1466265507Strasz ci->status = CTL_ISCSI_ERROR; 1467265507Strasz cfiscsi_target_release(ct); 1468265507Strasz return; 1469265507Strasz } 1470265507Strasz mtx_unlock(&cfiscsi_softc.lock); 1471265507Strasz } else { 1472265507Strasz#endif 1473265507Strasz cs = cfiscsi_session_new(softc); 1474265507Strasz if (cs == NULL) { 1475265507Strasz ci->status = CTL_ISCSI_ERROR; 1476265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1477265507Strasz "%s: cfiscsi_session_new failed", __func__); 1478265507Strasz cfiscsi_target_release(ct); 1479265507Strasz return; 1480265507Strasz } 1481265507Strasz#ifdef ICL_KERNEL_PROXY 1482255570Strasz } 1483255570Strasz#endif 1484255570Strasz 1485255570Strasz /* 1486255570Strasz * First PDU of Full Feature phase has the same CmdSN as the last 1487255570Strasz * PDU from the Login Phase received from the initiator. Thus, 1488255570Strasz * the -1 below. 1489255570Strasz */ 1490255570Strasz cs->cs_cmdsn = cihp->cmdsn; 1491255570Strasz cs->cs_statsn = cihp->statsn; 1492255570Strasz cs->cs_max_data_segment_length = cihp->max_recv_data_segment_length; 1493255570Strasz cs->cs_max_burst_length = cihp->max_burst_length; 1494255570Strasz cs->cs_immediate_data = !!cihp->immediate_data; 1495255570Strasz if (cihp->header_digest == CTL_ISCSI_DIGEST_CRC32C) 1496255570Strasz cs->cs_conn->ic_header_crc32c = true; 1497255570Strasz if (cihp->data_digest == CTL_ISCSI_DIGEST_CRC32C) 1498255570Strasz cs->cs_conn->ic_data_crc32c = true; 1499255570Strasz 1500255570Strasz strlcpy(cs->cs_initiator_name, 1501255570Strasz cihp->initiator_name, sizeof(cs->cs_initiator_name)); 1502255570Strasz strlcpy(cs->cs_initiator_addr, 1503255570Strasz cihp->initiator_addr, sizeof(cs->cs_initiator_addr)); 1504255570Strasz strlcpy(cs->cs_initiator_alias, 1505255570Strasz cihp->initiator_alias, sizeof(cs->cs_initiator_alias)); 1506268684Smav memcpy(cs->cs_initiator_isid, 1507268684Smav cihp->initiator_isid, sizeof(cs->cs_initiator_isid)); 1508268684Smav snprintf(cs->cs_initiator_id, sizeof(cs->cs_initiator_id), 1509268684Smav "%s,i,0x%02x%02x%02x%02x%02x%02x", cs->cs_initiator_name, 1510268684Smav cihp->initiator_isid[0], cihp->initiator_isid[1], 1511268684Smav cihp->initiator_isid[2], cihp->initiator_isid[3], 1512268684Smav cihp->initiator_isid[4], cihp->initiator_isid[5]); 1513255570Strasz 1514275494Smav mtx_lock(&softc->lock); 1515275494Smav if (ct->ct_online == 0) { 1516275494Smav mtx_unlock(&softc->lock); 1517275494Smav cfiscsi_session_terminate(cs); 1518275494Smav cfiscsi_target_release(ct); 1519275494Smav ci->status = CTL_ISCSI_ERROR; 1520275494Smav snprintf(ci->error_str, sizeof(ci->error_str), 1521275494Smav "%s: port offline", __func__); 1522275494Smav return; 1523275494Smav } 1524275494Smav cs->cs_target = ct; 1525275494Smav mtx_unlock(&softc->lock); 1526275494Smav 1527268691Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1528268691Smavrestart: 1529268691Smav if (!cs->cs_terminating) { 1530268691Smav mtx_lock(&softc->lock); 1531268691Smav TAILQ_FOREACH(cs2, &softc->sessions, cs_next) { 1532268691Smav if (cs2 != cs && cs2->cs_tasks_aborted == false && 1533268691Smav cs->cs_target == cs2->cs_target && 1534268691Smav strcmp(cs->cs_initiator_id, cs2->cs_initiator_id) == 0) { 1535268691Smav cfiscsi_session_terminate(cs2); 1536268691Smav mtx_unlock(&softc->lock); 1537268691Smav pause("cfiscsi_reinstate", 1); 1538268691Smav goto restart; 1539268691Smav } 1540268691Smav } 1541268691Smav mtx_unlock(&softc->lock); 1542268691Smav } 1543268691Smav 1544268691Smav /* 1545268691Smav * Register initiator with CTL. 1546268691Smav */ 1547268691Smav cfiscsi_session_register_initiator(cs); 1548268691Smav 1549255570Strasz#ifdef ICL_KERNEL_PROXY 1550265507Strasz if (cihp->socket > 0) { 1551265507Strasz#endif 1552265507Strasz error = icl_conn_handoff(cs->cs_conn, cihp->socket); 1553265507Strasz if (error != 0) { 1554268691Smav cfiscsi_session_terminate(cs); 1555268691Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 1556265507Strasz ci->status = CTL_ISCSI_ERROR; 1557265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1558265507Strasz "%s: icl_conn_handoff failed with error %d", 1559265507Strasz __func__, error); 1560265507Strasz return; 1561265507Strasz } 1562265507Strasz#ifdef ICL_KERNEL_PROXY 1563255570Strasz } 1564255570Strasz#endif 1565255570Strasz 1566255570Strasz#ifdef ICL_KERNEL_PROXY 1567265507Strasz cs->cs_login_phase = false; 1568265507Strasz 1569255570Strasz /* 1570255570Strasz * First PDU of the Full Feature phase has likely already arrived. 1571255570Strasz * We have to pick it up and execute properly. 1572255570Strasz */ 1573255570Strasz if (cs->cs_login_pdu != NULL) { 1574255570Strasz CFISCSI_SESSION_DEBUG(cs, "picking up first PDU"); 1575255570Strasz cfiscsi_pdu_handle(cs->cs_login_pdu); 1576255570Strasz cs->cs_login_pdu = NULL; 1577255570Strasz } 1578255570Strasz#endif 1579255570Strasz 1580268691Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 1581255570Strasz ci->status = CTL_ISCSI_OK; 1582255570Strasz} 1583255570Strasz 1584255570Straszstatic void 1585255570Straszcfiscsi_ioctl_list(struct ctl_iscsi *ci) 1586255570Strasz{ 1587255570Strasz struct ctl_iscsi_list_params *cilp; 1588255570Strasz struct cfiscsi_session *cs; 1589255570Strasz struct cfiscsi_softc *softc; 1590255570Strasz struct sbuf *sb; 1591255570Strasz int error; 1592255570Strasz 1593255570Strasz cilp = (struct ctl_iscsi_list_params *)&(ci->data); 1594255570Strasz softc = &cfiscsi_softc; 1595255570Strasz 1596255570Strasz sb = sbuf_new(NULL, NULL, cilp->alloc_len, SBUF_FIXEDLEN); 1597255570Strasz if (sb == NULL) { 1598255570Strasz ci->status = CTL_ISCSI_ERROR; 1599255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1600255570Strasz "Unable to allocate %d bytes for iSCSI session list", 1601255570Strasz cilp->alloc_len); 1602255570Strasz return; 1603255570Strasz } 1604255570Strasz 1605255570Strasz sbuf_printf(sb, "<ctlislist>\n"); 1606255570Strasz mtx_lock(&softc->lock); 1607255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1608255570Strasz#ifdef ICL_KERNEL_PROXY 1609255570Strasz if (cs->cs_target == NULL) 1610255570Strasz continue; 1611255570Strasz#endif 1612255570Strasz error = sbuf_printf(sb, "<connection id=\"%d\">" 1613255570Strasz "<initiator>%s</initiator>" 1614255570Strasz "<initiator_addr>%s</initiator_addr>" 1615255570Strasz "<initiator_alias>%s</initiator_alias>" 1616255570Strasz "<target>%s</target>" 1617255570Strasz "<target_alias>%s</target_alias>" 1618279003Smav "<target_portal_group_tag>%u</target_portal_group_tag>" 1619255570Strasz "<header_digest>%s</header_digest>" 1620255570Strasz "<data_digest>%s</data_digest>" 1621255570Strasz "<max_data_segment_length>%zd</max_data_segment_length>" 1622255570Strasz "<immediate_data>%d</immediate_data>" 1623255570Strasz "<iser>%d</iser>" 1624255570Strasz "</connection>\n", 1625255570Strasz cs->cs_id, 1626255570Strasz cs->cs_initiator_name, cs->cs_initiator_addr, cs->cs_initiator_alias, 1627255570Strasz cs->cs_target->ct_name, cs->cs_target->ct_alias, 1628279003Smav cs->cs_target->ct_tag, 1629255570Strasz cs->cs_conn->ic_header_crc32c ? "CRC32C" : "None", 1630255570Strasz cs->cs_conn->ic_data_crc32c ? "CRC32C" : "None", 1631255570Strasz cs->cs_max_data_segment_length, 1632255570Strasz cs->cs_immediate_data, 1633255570Strasz cs->cs_conn->ic_iser); 1634255570Strasz if (error != 0) 1635255570Strasz break; 1636255570Strasz } 1637255570Strasz mtx_unlock(&softc->lock); 1638255570Strasz error = sbuf_printf(sb, "</ctlislist>\n"); 1639255570Strasz if (error != 0) { 1640255570Strasz sbuf_delete(sb); 1641255570Strasz ci->status = CTL_ISCSI_LIST_NEED_MORE_SPACE; 1642255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1643255570Strasz "Out of space, %d bytes is too small", cilp->alloc_len); 1644255570Strasz return; 1645255570Strasz } 1646255570Strasz sbuf_finish(sb); 1647255570Strasz 1648255570Strasz error = copyout(sbuf_data(sb), cilp->conn_xml, sbuf_len(sb) + 1); 1649255570Strasz cilp->fill_len = sbuf_len(sb) + 1; 1650255570Strasz ci->status = CTL_ISCSI_OK; 1651255570Strasz sbuf_delete(sb); 1652255570Strasz} 1653255570Strasz 1654255570Straszstatic void 1655255570Straszcfiscsi_ioctl_terminate(struct ctl_iscsi *ci) 1656255570Strasz{ 1657255570Strasz struct icl_pdu *response; 1658255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1659255570Strasz struct ctl_iscsi_terminate_params *citp; 1660255570Strasz struct cfiscsi_session *cs; 1661255570Strasz struct cfiscsi_softc *softc; 1662255570Strasz int found = 0; 1663255570Strasz 1664255570Strasz citp = (struct ctl_iscsi_terminate_params *)&(ci->data); 1665255570Strasz softc = &cfiscsi_softc; 1666255570Strasz 1667255570Strasz mtx_lock(&softc->lock); 1668255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1669255570Strasz if (citp->all == 0 && cs->cs_id != citp->connection_id && 1670255570Strasz strcmp(cs->cs_initiator_name, citp->initiator_name) != 0 && 1671255570Strasz strcmp(cs->cs_initiator_addr, citp->initiator_addr) != 0) 1672255570Strasz continue; 1673255570Strasz 1674276618Smav response = icl_pdu_new(cs->cs_conn, M_NOWAIT); 1675255570Strasz if (response == NULL) { 1676255570Strasz /* 1677255570Strasz * Oh well. Just terminate the connection. 1678255570Strasz */ 1679255570Strasz } else { 1680255570Strasz bhsam = (struct iscsi_bhs_asynchronous_message *) 1681255570Strasz response->ip_bhs; 1682255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1683255570Strasz bhsam->bhsam_flags = 0x80; 1684255570Strasz bhsam->bhsam_0xffffffff = 0xffffffff; 1685255570Strasz bhsam->bhsam_async_event = 1686255570Strasz BHSAM_EVENT_TARGET_TERMINATES_SESSION; 1687255570Strasz cfiscsi_pdu_queue(response); 1688255570Strasz } 1689255570Strasz cfiscsi_session_terminate(cs); 1690255570Strasz found++; 1691255570Strasz } 1692255570Strasz mtx_unlock(&softc->lock); 1693255570Strasz 1694255570Strasz if (found == 0) { 1695255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1696255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1697255570Strasz "No matching connections found"); 1698255570Strasz return; 1699255570Strasz } 1700255570Strasz 1701255570Strasz ci->status = CTL_ISCSI_OK; 1702255570Strasz} 1703255570Strasz 1704255570Straszstatic void 1705255570Straszcfiscsi_ioctl_logout(struct ctl_iscsi *ci) 1706255570Strasz{ 1707255570Strasz struct icl_pdu *response; 1708255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1709255570Strasz struct ctl_iscsi_logout_params *cilp; 1710255570Strasz struct cfiscsi_session *cs; 1711255570Strasz struct cfiscsi_softc *softc; 1712255570Strasz int found = 0; 1713255570Strasz 1714255570Strasz cilp = (struct ctl_iscsi_logout_params *)&(ci->data); 1715255570Strasz softc = &cfiscsi_softc; 1716255570Strasz 1717255570Strasz mtx_lock(&softc->lock); 1718255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1719255570Strasz if (cilp->all == 0 && cs->cs_id != cilp->connection_id && 1720255570Strasz strcmp(cs->cs_initiator_name, cilp->initiator_name) != 0 && 1721255570Strasz strcmp(cs->cs_initiator_addr, cilp->initiator_addr) != 0) 1722255570Strasz continue; 1723255570Strasz 1724276618Smav response = icl_pdu_new(cs->cs_conn, M_NOWAIT); 1725255570Strasz if (response == NULL) { 1726255570Strasz ci->status = CTL_ISCSI_ERROR; 1727255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1728255570Strasz "Unable to allocate memory"); 1729255570Strasz mtx_unlock(&softc->lock); 1730255570Strasz return; 1731255570Strasz } 1732255570Strasz bhsam = 1733255570Strasz (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1734255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1735255570Strasz bhsam->bhsam_flags = 0x80; 1736255570Strasz bhsam->bhsam_async_event = BHSAM_EVENT_TARGET_REQUESTS_LOGOUT; 1737255570Strasz bhsam->bhsam_parameter3 = htons(10); 1738255570Strasz cfiscsi_pdu_queue(response); 1739255570Strasz found++; 1740255570Strasz } 1741255570Strasz mtx_unlock(&softc->lock); 1742255570Strasz 1743255570Strasz if (found == 0) { 1744255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1745255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1746255570Strasz "No matching connections found"); 1747255570Strasz return; 1748255570Strasz } 1749255570Strasz 1750255570Strasz ci->status = CTL_ISCSI_OK; 1751255570Strasz} 1752255570Strasz 1753255570Strasz#ifdef ICL_KERNEL_PROXY 1754255570Straszstatic void 1755255570Straszcfiscsi_ioctl_listen(struct ctl_iscsi *ci) 1756255570Strasz{ 1757255570Strasz struct ctl_iscsi_listen_params *cilp; 1758255570Strasz struct sockaddr *sa; 1759255570Strasz int error; 1760255570Strasz 1761255570Strasz cilp = (struct ctl_iscsi_listen_params *)&(ci->data); 1762255570Strasz 1763255570Strasz if (cfiscsi_softc.listener == NULL) { 1764255570Strasz CFISCSI_DEBUG("no listener"); 1765255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "no listener"); 1766255570Strasz ci->status = CTL_ISCSI_ERROR; 1767255570Strasz return; 1768255570Strasz } 1769255570Strasz 1770255570Strasz error = getsockaddr(&sa, (void *)cilp->addr, cilp->addrlen); 1771255570Strasz if (error != 0) { 1772255570Strasz CFISCSI_DEBUG("getsockaddr, error %d", error); 1773255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "getsockaddr failed"); 1774255570Strasz ci->status = CTL_ISCSI_ERROR; 1775255570Strasz return; 1776255570Strasz } 1777255570Strasz 1778255570Strasz error = icl_listen_add(cfiscsi_softc.listener, cilp->iser, cilp->domain, 1779265509Strasz cilp->socktype, cilp->protocol, sa, cilp->portal_id); 1780255570Strasz if (error != 0) { 1781255570Strasz free(sa, M_SONAME); 1782255570Strasz CFISCSI_DEBUG("icl_listen_add, error %d", error); 1783255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1784255570Strasz "icl_listen_add failed, error %d", error); 1785255570Strasz ci->status = CTL_ISCSI_ERROR; 1786255570Strasz return; 1787255570Strasz } 1788255570Strasz 1789255570Strasz ci->status = CTL_ISCSI_OK; 1790255570Strasz} 1791255570Strasz 1792255570Straszstatic void 1793255570Straszcfiscsi_ioctl_accept(struct ctl_iscsi *ci) 1794255570Strasz{ 1795255570Strasz struct ctl_iscsi_accept_params *ciap; 1796255570Strasz struct cfiscsi_session *cs; 1797255570Strasz int error; 1798255570Strasz 1799255570Strasz ciap = (struct ctl_iscsi_accept_params *)&(ci->data); 1800255570Strasz 1801255570Strasz mtx_lock(&cfiscsi_softc.lock); 1802255570Strasz for (;;) { 1803255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1804255570Strasz if (cs->cs_waiting_for_ctld) 1805255570Strasz break; 1806255570Strasz } 1807255570Strasz if (cs != NULL) 1808255570Strasz break; 1809255570Strasz error = cv_wait_sig(&cfiscsi_softc.accept_cv, &cfiscsi_softc.lock); 1810255570Strasz if (error != 0) { 1811255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1812255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "interrupted"); 1813255570Strasz ci->status = CTL_ISCSI_ERROR; 1814255570Strasz return; 1815255570Strasz } 1816255570Strasz } 1817255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1818255570Strasz 1819255570Strasz cs->cs_waiting_for_ctld = false; 1820255570Strasz cs->cs_login_phase = true; 1821255570Strasz 1822255570Strasz ciap->connection_id = cs->cs_id; 1823265509Strasz ciap->portal_id = cs->cs_portal_id; 1824265513Strasz ciap->initiator_addrlen = cs->cs_initiator_sa->sa_len; 1825265513Strasz error = copyout(cs->cs_initiator_sa, ciap->initiator_addr, 1826265513Strasz cs->cs_initiator_sa->sa_len); 1827265513Strasz if (error != 0) { 1828265513Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1829265513Strasz "copyout failed with error %d", error); 1830265513Strasz ci->status = CTL_ISCSI_ERROR; 1831265513Strasz return; 1832265513Strasz } 1833265513Strasz 1834255570Strasz ci->status = CTL_ISCSI_OK; 1835255570Strasz} 1836255570Strasz 1837255570Straszstatic void 1838255570Straszcfiscsi_ioctl_send(struct ctl_iscsi *ci) 1839255570Strasz{ 1840255570Strasz struct ctl_iscsi_send_params *cisp; 1841255570Strasz struct cfiscsi_session *cs; 1842255570Strasz struct icl_pdu *ip; 1843255570Strasz size_t datalen; 1844255570Strasz void *data; 1845255570Strasz int error; 1846255570Strasz 1847255570Strasz cisp = (struct ctl_iscsi_send_params *)&(ci->data); 1848255570Strasz 1849255570Strasz mtx_lock(&cfiscsi_softc.lock); 1850255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1851255570Strasz if (cs->cs_id == cisp->connection_id) 1852255570Strasz break; 1853255570Strasz } 1854255570Strasz if (cs == NULL) { 1855255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1856255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1857255570Strasz ci->status = CTL_ISCSI_ERROR; 1858255570Strasz return; 1859255570Strasz } 1860255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1861255570Strasz 1862255570Strasz#if 0 1863255570Strasz if (cs->cs_login_phase == false) 1864255570Strasz return (EBUSY); 1865255570Strasz#endif 1866255570Strasz 1867255570Strasz if (cs->cs_terminating) { 1868255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection is terminating"); 1869255570Strasz ci->status = CTL_ISCSI_ERROR; 1870255570Strasz return; 1871255570Strasz } 1872255570Strasz 1873255570Strasz datalen = cisp->data_segment_len; 1874255570Strasz /* 1875255570Strasz * XXX 1876255570Strasz */ 1877255570Strasz //if (datalen > CFISCSI_MAX_DATA_SEGMENT_LENGTH) { 1878255570Strasz if (datalen > 65535) { 1879255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1880255570Strasz ci->status = CTL_ISCSI_ERROR; 1881255570Strasz return; 1882255570Strasz } 1883255570Strasz if (datalen > 0) { 1884255570Strasz data = malloc(datalen, M_CFISCSI, M_WAITOK); 1885255570Strasz error = copyin(cisp->data_segment, data, datalen); 1886255570Strasz if (error != 0) { 1887255570Strasz free(data, M_CFISCSI); 1888255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "copyin error %d", error); 1889255570Strasz ci->status = CTL_ISCSI_ERROR; 1890255570Strasz return; 1891255570Strasz } 1892255570Strasz } 1893255570Strasz 1894276618Smav ip = icl_pdu_new(cs->cs_conn, M_WAITOK); 1895255570Strasz memcpy(ip->ip_bhs, cisp->bhs, sizeof(*ip->ip_bhs)); 1896255570Strasz if (datalen > 0) { 1897255570Strasz icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1898255570Strasz free(data, M_CFISCSI); 1899255570Strasz } 1900265507Strasz CFISCSI_SESSION_LOCK(cs); 1901255570Strasz icl_pdu_queue(ip); 1902265507Strasz CFISCSI_SESSION_UNLOCK(cs); 1903255570Strasz ci->status = CTL_ISCSI_OK; 1904255570Strasz} 1905255570Strasz 1906255570Straszstatic void 1907255570Straszcfiscsi_ioctl_receive(struct ctl_iscsi *ci) 1908255570Strasz{ 1909255570Strasz struct ctl_iscsi_receive_params *cirp; 1910255570Strasz struct cfiscsi_session *cs; 1911255570Strasz struct icl_pdu *ip; 1912255570Strasz void *data; 1913265510Strasz int error; 1914255570Strasz 1915255570Strasz cirp = (struct ctl_iscsi_receive_params *)&(ci->data); 1916255570Strasz 1917255570Strasz mtx_lock(&cfiscsi_softc.lock); 1918255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1919255570Strasz if (cs->cs_id == cirp->connection_id) 1920255570Strasz break; 1921255570Strasz } 1922255570Strasz if (cs == NULL) { 1923255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1924265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1925265510Strasz "connection not found"); 1926255570Strasz ci->status = CTL_ISCSI_ERROR; 1927255570Strasz return; 1928255570Strasz } 1929255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1930255570Strasz 1931255570Strasz#if 0 1932255570Strasz if (is->is_login_phase == false) 1933255570Strasz return (EBUSY); 1934255570Strasz#endif 1935255570Strasz 1936255570Strasz CFISCSI_SESSION_LOCK(cs); 1937265510Strasz while (cs->cs_login_pdu == NULL && cs->cs_terminating == false) { 1938265510Strasz error = cv_wait_sig(&cs->cs_login_cv, &cs->cs_lock); 1939265510Strasz if (error != 0) { 1940265510Strasz CFISCSI_SESSION_UNLOCK(cs); 1941265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1942265510Strasz "interrupted by signal"); 1943265510Strasz ci->status = CTL_ISCSI_ERROR; 1944265510Strasz return; 1945265510Strasz } 1946265510Strasz } 1947265510Strasz 1948255570Strasz if (cs->cs_terminating) { 1949255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1950265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1951265510Strasz "connection terminating"); 1952255570Strasz ci->status = CTL_ISCSI_ERROR; 1953255570Strasz return; 1954255570Strasz } 1955255570Strasz ip = cs->cs_login_pdu; 1956255570Strasz cs->cs_login_pdu = NULL; 1957255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1958255570Strasz 1959255570Strasz if (ip->ip_data_len > cirp->data_segment_len) { 1960255570Strasz icl_pdu_free(ip); 1961265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1962265510Strasz "data segment too big"); 1963255570Strasz ci->status = CTL_ISCSI_ERROR; 1964255570Strasz return; 1965255570Strasz } 1966255570Strasz 1967255570Strasz copyout(ip->ip_bhs, cirp->bhs, sizeof(*ip->ip_bhs)); 1968255570Strasz if (ip->ip_data_len > 0) { 1969255570Strasz data = malloc(ip->ip_data_len, M_CFISCSI, M_WAITOK); 1970255570Strasz icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1971255570Strasz copyout(data, cirp->data_segment, ip->ip_data_len); 1972255570Strasz free(data, M_CFISCSI); 1973255570Strasz } 1974255570Strasz 1975255570Strasz icl_pdu_free(ip); 1976255570Strasz ci->status = CTL_ISCSI_OK; 1977255570Strasz} 1978255570Strasz 1979255570Strasz#endif /* !ICL_KERNEL_PROXY */ 1980255570Strasz 1981268682Smavstatic void 1982268682Smavcfiscsi_ioctl_port_create(struct ctl_req *req) 1983268682Smav{ 1984268682Smav struct cfiscsi_target *ct; 1985268682Smav struct ctl_port *port; 1986279003Smav const char *target, *alias, *tags; 1987268683Smav struct scsi_vpd_id_descriptor *desc; 1988268682Smav ctl_options_t opts; 1989268683Smav int retval, len, idlen; 1990279003Smav uint16_t tag; 1991268682Smav 1992268682Smav ctl_init_opts(&opts, req->num_args, req->kern_args); 1993268682Smav target = ctl_get_opt(&opts, "cfiscsi_target"); 1994268682Smav alias = ctl_get_opt(&opts, "cfiscsi_target_alias"); 1995279003Smav tags = ctl_get_opt(&opts, "cfiscsi_portal_group_tag"); 1996279003Smav if (target == NULL || tags == NULL) { 1997268682Smav req->status = CTL_LUN_ERROR; 1998268682Smav snprintf(req->error_str, sizeof(req->error_str), 1999268682Smav "Missing required argument"); 2000268695Smav ctl_free_opts(&opts); 2001268682Smav return; 2002268682Smav } 2003279003Smav tag = strtol(tags, (char **)NULL, 10); 2004279003Smav ct = cfiscsi_target_find_or_create(&cfiscsi_softc, target, alias, tag); 2005268682Smav if (ct == NULL) { 2006268682Smav req->status = CTL_LUN_ERROR; 2007268682Smav snprintf(req->error_str, sizeof(req->error_str), 2008268682Smav "failed to create target \"%s\"", target); 2009268695Smav ctl_free_opts(&opts); 2010268682Smav return; 2011268682Smav } 2012268682Smav if (ct->ct_state == CFISCSI_TARGET_STATE_ACTIVE) { 2013268682Smav req->status = CTL_LUN_ERROR; 2014268682Smav snprintf(req->error_str, sizeof(req->error_str), 2015275445Strasz "target \"%s\" already exists", target); 2016268695Smav cfiscsi_target_release(ct); 2017268695Smav ctl_free_opts(&opts); 2018268682Smav return; 2019268682Smav } 2020268682Smav port = &ct->ct_port; 2021268682Smav if (ct->ct_state == CFISCSI_TARGET_STATE_DYING) 2022268682Smav goto done; 2023268682Smav 2024268682Smav port->frontend = &cfiscsi_frontend; 2025268682Smav port->port_type = CTL_PORT_ISCSI; 2026268682Smav /* XXX KDM what should the real number be here? */ 2027268682Smav port->num_requested_ctl_io = 4096; 2028268682Smav port->port_name = "iscsi"; 2029279003Smav port->physical_port = tag; 2030273319Smav port->virtual_port = ct->ct_target_id; 2031268682Smav port->port_online = cfiscsi_online; 2032268682Smav port->port_offline = cfiscsi_offline; 2033268688Smav port->port_info = cfiscsi_info; 2034268682Smav port->onoff_arg = ct; 2035268682Smav port->lun_enable = cfiscsi_lun_enable; 2036268682Smav port->lun_disable = cfiscsi_lun_disable; 2037268682Smav port->targ_lun_arg = ct; 2038268682Smav port->fe_datamove = cfiscsi_datamove; 2039268682Smav port->fe_done = cfiscsi_done; 2040268682Smav 2041268682Smav /* XXX KDM what should we report here? */ 2042268682Smav /* XXX These should probably be fetched from CTL. */ 2043268682Smav port->max_targets = 1; 2044268682Smav port->max_target_id = 15; 2045268682Smav 2046268682Smav port->options = opts; 2047268682Smav STAILQ_INIT(&opts); 2048268682Smav 2049268683Smav /* Generate Port ID. */ 2050268683Smav idlen = strlen(target) + strlen(",t,0x0001") + 1; 2051268683Smav idlen = roundup2(idlen, 4); 2052268683Smav len = sizeof(struct scsi_vpd_device_id) + idlen; 2053268683Smav port->port_devid = malloc(sizeof(struct ctl_devid) + len, 2054268683Smav M_CTL, M_WAITOK | M_ZERO); 2055268683Smav port->port_devid->len = len; 2056268683Smav desc = (struct scsi_vpd_id_descriptor *)port->port_devid->data; 2057268683Smav desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2058268683Smav desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2059268683Smav SVPD_ID_TYPE_SCSI_NAME; 2060268683Smav desc->length = idlen; 2061279003Smav snprintf(desc->identifier, idlen, "%s,t,0x%4.4x", target, tag); 2062268683Smav 2063268683Smav /* Generate Target ID. */ 2064268683Smav idlen = strlen(target) + 1; 2065268683Smav idlen = roundup2(idlen, 4); 2066268683Smav len = sizeof(struct scsi_vpd_device_id) + idlen; 2067268683Smav port->target_devid = malloc(sizeof(struct ctl_devid) + len, 2068268683Smav M_CTL, M_WAITOK | M_ZERO); 2069268683Smav port->target_devid->len = len; 2070268683Smav desc = (struct scsi_vpd_id_descriptor *)port->target_devid->data; 2071268683Smav desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2072268683Smav desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_TARGET | 2073268683Smav SVPD_ID_TYPE_SCSI_NAME; 2074268683Smav desc->length = idlen; 2075268683Smav strlcpy(desc->identifier, target, idlen); 2076268683Smav 2077275493Smav retval = ctl_port_register(port); 2078268682Smav if (retval != 0) { 2079268682Smav ctl_free_opts(&port->options); 2080268682Smav cfiscsi_target_release(ct); 2081268683Smav free(port->port_devid, M_CFISCSI); 2082268683Smav free(port->target_devid, M_CFISCSI); 2083268682Smav req->status = CTL_LUN_ERROR; 2084268682Smav snprintf(req->error_str, sizeof(req->error_str), 2085279002Smav "ctl_port_register() failed with error %d", retval); 2086268682Smav return; 2087268682Smav } 2088268682Smavdone: 2089268682Smav ct->ct_state = CFISCSI_TARGET_STATE_ACTIVE; 2090268682Smav req->status = CTL_LUN_OK; 2091268682Smav memcpy(req->kern_args[0].kvalue, &port->targ_port, 2092268682Smav sizeof(port->targ_port)); //XXX 2093268682Smav} 2094268682Smav 2095268682Smavstatic void 2096268682Smavcfiscsi_ioctl_port_remove(struct ctl_req *req) 2097268682Smav{ 2098268682Smav struct cfiscsi_target *ct; 2099279003Smav const char *target, *tags; 2100268682Smav ctl_options_t opts; 2101279003Smav uint16_t tag; 2102268682Smav 2103268682Smav ctl_init_opts(&opts, req->num_args, req->kern_args); 2104268682Smav target = ctl_get_opt(&opts, "cfiscsi_target"); 2105279003Smav tags = ctl_get_opt(&opts, "cfiscsi_portal_group_tag"); 2106279003Smav if (target == NULL || tags == NULL) { 2107268682Smav ctl_free_opts(&opts); 2108268682Smav req->status = CTL_LUN_ERROR; 2109268682Smav snprintf(req->error_str, sizeof(req->error_str), 2110268682Smav "Missing required argument"); 2111268682Smav return; 2112268682Smav } 2113279003Smav tag = strtol(tags, (char **)NULL, 10); 2114279003Smav ct = cfiscsi_target_find(&cfiscsi_softc, target, tag); 2115268682Smav if (ct == NULL) { 2116268682Smav ctl_free_opts(&opts); 2117268682Smav req->status = CTL_LUN_ERROR; 2118268682Smav snprintf(req->error_str, sizeof(req->error_str), 2119268682Smav "can't find target \"%s\"", target); 2120268682Smav return; 2121268682Smav } 2122268682Smav if (ct->ct_state != CFISCSI_TARGET_STATE_ACTIVE) { 2123268682Smav ctl_free_opts(&opts); 2124268682Smav req->status = CTL_LUN_ERROR; 2125268682Smav snprintf(req->error_str, sizeof(req->error_str), 2126268682Smav "target \"%s\" is already dying", target); 2127268682Smav return; 2128268682Smav } 2129268682Smav ctl_free_opts(&opts); 2130268682Smav 2131268682Smav ct->ct_state = CFISCSI_TARGET_STATE_DYING; 2132268682Smav ctl_port_offline(&ct->ct_port); 2133268682Smav cfiscsi_target_release(ct); 2134268682Smav cfiscsi_target_release(ct); 2135279003Smav req->status = CTL_LUN_OK; 2136268682Smav} 2137268682Smav 2138255570Straszstatic int 2139255570Straszcfiscsi_ioctl(struct cdev *dev, 2140255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td) 2141255570Strasz{ 2142255570Strasz struct ctl_iscsi *ci; 2143268682Smav struct ctl_req *req; 2144255570Strasz 2145268682Smav if (cmd == CTL_PORT_REQ) { 2146268682Smav req = (struct ctl_req *)addr; 2147268682Smav switch (req->reqtype) { 2148268682Smav case CTL_REQ_CREATE: 2149268682Smav cfiscsi_ioctl_port_create(req); 2150268682Smav break; 2151268682Smav case CTL_REQ_REMOVE: 2152268682Smav cfiscsi_ioctl_port_remove(req); 2153268682Smav break; 2154268682Smav default: 2155268682Smav req->status = CTL_LUN_ERROR; 2156268682Smav snprintf(req->error_str, sizeof(req->error_str), 2157268682Smav "Unsupported request type %d", req->reqtype); 2158268682Smav } 2159268682Smav return (0); 2160268682Smav } 2161268682Smav 2162255570Strasz if (cmd != CTL_ISCSI) 2163255570Strasz return (ENOTTY); 2164255570Strasz 2165255570Strasz ci = (struct ctl_iscsi *)addr; 2166255570Strasz switch (ci->type) { 2167255570Strasz case CTL_ISCSI_HANDOFF: 2168255570Strasz cfiscsi_ioctl_handoff(ci); 2169255570Strasz break; 2170255570Strasz case CTL_ISCSI_LIST: 2171255570Strasz cfiscsi_ioctl_list(ci); 2172255570Strasz break; 2173255570Strasz case CTL_ISCSI_TERMINATE: 2174255570Strasz cfiscsi_ioctl_terminate(ci); 2175255570Strasz break; 2176255570Strasz case CTL_ISCSI_LOGOUT: 2177255570Strasz cfiscsi_ioctl_logout(ci); 2178255570Strasz break; 2179255570Strasz#ifdef ICL_KERNEL_PROXY 2180255570Strasz case CTL_ISCSI_LISTEN: 2181255570Strasz cfiscsi_ioctl_listen(ci); 2182255570Strasz break; 2183255570Strasz case CTL_ISCSI_ACCEPT: 2184255570Strasz cfiscsi_ioctl_accept(ci); 2185255570Strasz break; 2186255570Strasz case CTL_ISCSI_SEND: 2187255570Strasz cfiscsi_ioctl_send(ci); 2188255570Strasz break; 2189255570Strasz case CTL_ISCSI_RECEIVE: 2190255570Strasz cfiscsi_ioctl_receive(ci); 2191255570Strasz break; 2192265508Strasz#else 2193265508Strasz case CTL_ISCSI_LISTEN: 2194265508Strasz case CTL_ISCSI_ACCEPT: 2195265508Strasz case CTL_ISCSI_SEND: 2196265508Strasz case CTL_ISCSI_RECEIVE: 2197265508Strasz ci->status = CTL_ISCSI_ERROR; 2198265508Strasz snprintf(ci->error_str, sizeof(ci->error_str), 2199265508Strasz "%s: CTL compiled without ICL_KERNEL_PROXY", 2200265508Strasz __func__); 2201265508Strasz break; 2202265508Strasz#endif /* !ICL_KERNEL_PROXY */ 2203255570Strasz default: 2204255570Strasz ci->status = CTL_ISCSI_ERROR; 2205255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 2206255570Strasz "%s: invalid iSCSI request type %d", __func__, ci->type); 2207255570Strasz break; 2208255570Strasz } 2209255570Strasz 2210255570Strasz return (0); 2211255570Strasz} 2212255570Strasz 2213255570Straszstatic void 2214255570Straszcfiscsi_target_hold(struct cfiscsi_target *ct) 2215255570Strasz{ 2216255570Strasz 2217255570Strasz refcount_acquire(&ct->ct_refcount); 2218255570Strasz} 2219255570Strasz 2220255570Straszstatic void 2221255570Straszcfiscsi_target_release(struct cfiscsi_target *ct) 2222255570Strasz{ 2223255570Strasz struct cfiscsi_softc *softc; 2224255570Strasz 2225255570Strasz softc = ct->ct_softc; 2226255570Strasz mtx_lock(&softc->lock); 2227255570Strasz if (refcount_release(&ct->ct_refcount)) { 2228255570Strasz TAILQ_REMOVE(&softc->targets, ct, ct_next); 2229255570Strasz mtx_unlock(&softc->lock); 2230268682Smav if (ct->ct_state != CFISCSI_TARGET_STATE_INVALID) { 2231268682Smav ct->ct_state = CFISCSI_TARGET_STATE_INVALID; 2232268682Smav if (ctl_port_deregister(&ct->ct_port) != 0) 2233268682Smav printf("%s: ctl_port_deregister() failed\n", 2234268682Smav __func__); 2235268682Smav } 2236255570Strasz free(ct, M_CFISCSI); 2237255570Strasz 2238255570Strasz return; 2239255570Strasz } 2240255570Strasz mtx_unlock(&softc->lock); 2241255570Strasz} 2242255570Strasz 2243255570Straszstatic struct cfiscsi_target * 2244279003Smavcfiscsi_target_find(struct cfiscsi_softc *softc, const char *name, uint16_t tag) 2245255570Strasz{ 2246255570Strasz struct cfiscsi_target *ct; 2247255570Strasz 2248255570Strasz mtx_lock(&softc->lock); 2249255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2250279003Smav if (ct->ct_tag != tag || 2251279003Smav strcmp(name, ct->ct_name) != 0 || 2252268682Smav ct->ct_state != CFISCSI_TARGET_STATE_ACTIVE) 2253255570Strasz continue; 2254255570Strasz cfiscsi_target_hold(ct); 2255255570Strasz mtx_unlock(&softc->lock); 2256255570Strasz return (ct); 2257255570Strasz } 2258255570Strasz mtx_unlock(&softc->lock); 2259255570Strasz 2260255570Strasz return (NULL); 2261255570Strasz} 2262255570Strasz 2263255570Straszstatic struct cfiscsi_target * 2264255570Straszcfiscsi_target_find_or_create(struct cfiscsi_softc *softc, const char *name, 2265279003Smav const char *alias, uint16_t tag) 2266255570Strasz{ 2267255570Strasz struct cfiscsi_target *ct, *newct; 2268255570Strasz 2269255570Strasz if (name[0] == '\0' || strlen(name) >= CTL_ISCSI_NAME_LEN) 2270255570Strasz return (NULL); 2271255570Strasz 2272255570Strasz newct = malloc(sizeof(*newct), M_CFISCSI, M_WAITOK | M_ZERO); 2273255570Strasz 2274255570Strasz mtx_lock(&softc->lock); 2275255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2276279003Smav if (ct->ct_tag != tag || 2277279003Smav strcmp(name, ct->ct_name) != 0 || 2278268682Smav ct->ct_state == CFISCSI_TARGET_STATE_INVALID) 2279255570Strasz continue; 2280255570Strasz cfiscsi_target_hold(ct); 2281255570Strasz mtx_unlock(&softc->lock); 2282255570Strasz free(newct, M_CFISCSI); 2283255570Strasz return (ct); 2284255570Strasz } 2285255570Strasz 2286255570Strasz strlcpy(newct->ct_name, name, sizeof(newct->ct_name)); 2287255570Strasz if (alias != NULL) 2288255570Strasz strlcpy(newct->ct_alias, alias, sizeof(newct->ct_alias)); 2289279003Smav newct->ct_tag = tag; 2290255570Strasz refcount_init(&newct->ct_refcount, 1); 2291255570Strasz newct->ct_softc = softc; 2292273319Smav if (TAILQ_EMPTY(&softc->targets)) 2293273319Smav softc->last_target_id = 0; 2294273319Smav newct->ct_target_id = ++softc->last_target_id; 2295255570Strasz TAILQ_INSERT_TAIL(&softc->targets, newct, ct_next); 2296255570Strasz mtx_unlock(&softc->lock); 2297255570Strasz 2298255570Strasz return (newct); 2299255570Strasz} 2300255570Strasz 2301255570Straszstatic int 2302284798Smavcfiscsi_lun_enable(void *arg, int lun_id) 2303255570Strasz{ 2304255570Strasz 2305255570Strasz return (0); 2306255570Strasz} 2307255570Strasz 2308255570Straszstatic int 2309284798Smavcfiscsi_lun_disable(void *arg, int lun_id) 2310255570Strasz{ 2311255570Strasz 2312255570Strasz return (0); 2313255570Strasz} 2314255570Strasz 2315255570Straszstatic void 2316256065Straszcfiscsi_datamove_in(union ctl_io *io) 2317255570Strasz{ 2318255570Strasz struct cfiscsi_session *cs; 2319255570Strasz struct icl_pdu *request, *response; 2320255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 2321255570Strasz struct iscsi_bhs_data_in *bhsdi; 2322255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2323265490Strasz size_t len, expected_len, sg_len, buffer_offset; 2324265490Strasz const char *sg_addr; 2325255824Strasz int ctl_sg_count, error, i; 2326255570Strasz 2327255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2328255570Strasz cs = PDU_SESSION(request); 2329255570Strasz 2330255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2331255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2332255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2333255570Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2334255570Strasz 2335255570Strasz if (io->scsiio.kern_sg_entries > 0) { 2336255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2337255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 2338255570Strasz } else { 2339255570Strasz ctl_sglist = &ctl_sg_entry; 2340255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 2341255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 2342255570Strasz ctl_sg_count = 1; 2343255570Strasz } 2344255570Strasz 2345255570Strasz /* 2346265490Strasz * This is the total amount of data to be transferred within the current 2347265490Strasz * SCSI command. We need to record it so that we can properly report 2348255570Strasz * underflow/underflow. 2349255570Strasz */ 2350255570Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2351255570Strasz 2352256065Strasz /* 2353265490Strasz * This is the offset within the current SCSI command; for the first 2354265490Strasz * call to cfiscsi_datamove() it will be 0, and for subsequent ones 2355265640Smav * it will be the sum of lengths of previous ones. 2356256065Strasz */ 2357265490Strasz buffer_offset = io->scsiio.kern_rel_offset; 2358255570Strasz 2359265490Strasz /* 2360265490Strasz * This is the transfer length expected by the initiator. In theory, 2361265490Strasz * it could be different from the correct amount of data from the SCSI 2362265490Strasz * point of view, even if that doesn't make any sense. 2363265490Strasz */ 2364265490Strasz expected_len = ntohl(bhssc->bhssc_expected_data_transfer_length); 2365265490Strasz#if 0 2366265640Smav if (expected_len != io->scsiio.kern_total_len) { 2367265640Smav CFISCSI_SESSION_DEBUG(cs, "expected transfer length %zd, " 2368265640Smav "actual length %zd", expected_len, 2369265640Smav (size_t)io->scsiio.kern_total_len); 2370265640Smav } 2371265490Strasz#endif 2372265490Strasz 2373265490Strasz if (buffer_offset >= expected_len) { 2374265490Strasz#if 0 2375265490Strasz CFISCSI_SESSION_DEBUG(cs, "buffer_offset = %zd, " 2376265490Strasz "already sent the expected len", buffer_offset); 2377265490Strasz#endif 2378265490Strasz io->scsiio.be_move_done(io); 2379265490Strasz return; 2380265490Strasz } 2381265490Strasz 2382256065Strasz i = 0; 2383265490Strasz sg_addr = NULL; 2384265490Strasz sg_len = 0; 2385256065Strasz response = NULL; 2386256065Strasz bhsdi = NULL; 2387256065Strasz for (;;) { 2388256065Strasz if (response == NULL) { 2389256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2390255570Strasz if (response == NULL) { 2391255824Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2392255824Strasz "allocate memory; dropping connection"); 2393256163Strasz ctl_set_busy(&io->scsiio); 2394256163Strasz io->scsiio.be_move_done(io); 2395255824Strasz cfiscsi_session_terminate(cs); 2396255824Strasz return; 2397255824Strasz } 2398256065Strasz bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 2399256065Strasz bhsdi->bhsdi_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_IN; 2400256065Strasz bhsdi->bhsdi_initiator_task_tag = 2401256065Strasz bhssc->bhssc_initiator_task_tag; 2402256065Strasz bhsdi->bhsdi_datasn = htonl(PDU_EXPDATASN(request)); 2403256065Strasz PDU_EXPDATASN(request)++; 2404265490Strasz bhsdi->bhsdi_buffer_offset = htonl(buffer_offset); 2405256065Strasz } 2406255570Strasz 2407265490Strasz KASSERT(i < ctl_sg_count, ("i >= ctl_sg_count")); 2408265490Strasz if (sg_len == 0) { 2409265490Strasz sg_addr = ctl_sglist[i].addr; 2410265490Strasz sg_len = ctl_sglist[i].len; 2411265490Strasz KASSERT(sg_len > 0, ("sg_len <= 0")); 2412256065Strasz } 2413255570Strasz 2414265490Strasz len = sg_len; 2415265490Strasz 2416265490Strasz /* 2417265490Strasz * Truncate to maximum data segment length. 2418265490Strasz */ 2419265490Strasz KASSERT(response->ip_data_len < cs->cs_max_data_segment_length, 2420265640Smav ("ip_data_len %zd >= max_data_segment_length %zd", 2421265490Strasz response->ip_data_len, cs->cs_max_data_segment_length)); 2422265490Strasz if (response->ip_data_len + len > 2423265640Smav cs->cs_max_data_segment_length) { 2424265490Strasz len = cs->cs_max_data_segment_length - 2425256065Strasz response->ip_data_len; 2426265640Smav KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2427265640Smav len, sg_len)); 2428265640Smav } 2429265490Strasz 2430265490Strasz /* 2431265490Strasz * Truncate to expected data transfer length. 2432265490Strasz */ 2433265490Strasz KASSERT(buffer_offset + response->ip_data_len < expected_len, 2434265640Smav ("buffer_offset %zd + ip_data_len %zd >= expected_len %zd", 2435265640Smav buffer_offset, response->ip_data_len, expected_len)); 2436265490Strasz if (buffer_offset + response->ip_data_len + len > expected_len) { 2437265490Strasz CFISCSI_SESSION_DEBUG(cs, "truncating from %zd " 2438265490Strasz "to expected data transfer length %zd", 2439265490Strasz buffer_offset + response->ip_data_len + len, expected_len); 2440265490Strasz len = expected_len - (buffer_offset + response->ip_data_len); 2441265640Smav KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2442265640Smav len, sg_len)); 2443265490Strasz } 2444265490Strasz 2445265490Strasz error = icl_pdu_append_data(response, sg_addr, len, M_NOWAIT); 2446256065Strasz if (error != 0) { 2447256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2448256065Strasz "allocate memory; dropping connection"); 2449256065Strasz icl_pdu_free(response); 2450256163Strasz ctl_set_busy(&io->scsiio); 2451256163Strasz io->scsiio.be_move_done(io); 2452256065Strasz cfiscsi_session_terminate(cs); 2453256065Strasz return; 2454256065Strasz } 2455265490Strasz sg_addr += len; 2456265490Strasz sg_len -= len; 2457256065Strasz 2458272101Smav KASSERT(buffer_offset + response->ip_data_len <= expected_len, 2459265640Smav ("buffer_offset %zd + ip_data_len %zd > expected_len %zd", 2460272101Smav buffer_offset, response->ip_data_len, expected_len)); 2461272101Smav if (buffer_offset + response->ip_data_len == expected_len) { 2462256065Strasz /* 2463265490Strasz * Already have the amount of data the initiator wanted. 2464265490Strasz */ 2465265490Strasz break; 2466265490Strasz } 2467265490Strasz 2468265490Strasz if (sg_len == 0) { 2469265490Strasz /* 2470256065Strasz * End of scatter-gather segment; 2471256065Strasz * proceed to the next one... 2472256065Strasz */ 2473256065Strasz if (i == ctl_sg_count - 1) { 2474255570Strasz /* 2475256065Strasz * ... unless this was the last one. 2476255570Strasz */ 2477256065Strasz break; 2478255570Strasz } 2479256065Strasz i++; 2480255570Strasz } 2481256065Strasz 2482256065Strasz if (response->ip_data_len == cs->cs_max_data_segment_length) { 2483256065Strasz /* 2484256065Strasz * Can't stuff more data into the current PDU; 2485256065Strasz * queue it. Note that's not enough to check 2486256195Strasz * for kern_data_resid == 0 instead; there 2487256065Strasz * may be several Data-In PDUs for the final 2488256065Strasz * call to cfiscsi_datamove(), and we want 2489256065Strasz * to set the F flag only on the last of them. 2490256065Strasz */ 2491265640Smav buffer_offset += response->ip_data_len; 2492265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2493275881Smav buffer_offset == expected_len) { 2494275881Smav buffer_offset -= response->ip_data_len; 2495275881Smav break; 2496275881Smav } 2497255570Strasz cfiscsi_pdu_queue(response); 2498256065Strasz response = NULL; 2499256065Strasz bhsdi = NULL; 2500255570Strasz } 2501256065Strasz } 2502256065Strasz if (response != NULL) { 2503265640Smav buffer_offset += response->ip_data_len; 2504265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2505275881Smav buffer_offset == expected_len) { 2506256065Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2507275881Smav if (io->io_hdr.status == CTL_SUCCESS) { 2508275881Smav bhsdi->bhsdi_flags |= BHSDI_FLAGS_S; 2509275881Smav if (PDU_TOTAL_TRANSFER_LEN(request) < 2510275881Smav ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2511275881Smav bhsdi->bhsdi_flags |= BHSSR_FLAGS_RESIDUAL_UNDERFLOW; 2512275881Smav bhsdi->bhsdi_residual_count = 2513275881Smav htonl(ntohl(bhssc->bhssc_expected_data_transfer_length) - 2514275881Smav PDU_TOTAL_TRANSFER_LEN(request)); 2515275881Smav } else if (PDU_TOTAL_TRANSFER_LEN(request) > 2516275881Smav ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2517275881Smav bhsdi->bhsdi_flags |= BHSSR_FLAGS_RESIDUAL_OVERFLOW; 2518275881Smav bhsdi->bhsdi_residual_count = 2519275881Smav htonl(PDU_TOTAL_TRANSFER_LEN(request) - 2520275881Smav ntohl(bhssc->bhssc_expected_data_transfer_length)); 2521275881Smav } 2522275881Smav bhsdi->bhsdi_status = io->scsiio.scsi_status; 2523275881Smav io->io_hdr.flags |= CTL_FLAG_STATUS_SENT; 2524275881Smav } 2525275881Smav } 2526256065Strasz KASSERT(response->ip_data_len > 0, ("sending empty Data-In")); 2527256065Strasz cfiscsi_pdu_queue(response); 2528256065Strasz } 2529255570Strasz 2530256065Strasz io->scsiio.be_move_done(io); 2531256065Strasz} 2532255570Strasz 2533256065Straszstatic void 2534256065Straszcfiscsi_datamove_out(union ctl_io *io) 2535256065Strasz{ 2536256065Strasz struct cfiscsi_session *cs; 2537256065Strasz struct icl_pdu *request, *response; 2538256065Strasz const struct iscsi_bhs_scsi_command *bhssc; 2539256065Strasz struct iscsi_bhs_r2t *bhsr2t; 2540256065Strasz struct cfiscsi_data_wait *cdw; 2541273310Smav struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2542273310Smav uint32_t expected_len, r2t_off, r2t_len; 2543256065Strasz uint32_t target_transfer_tag; 2544256065Strasz bool done; 2545256065Strasz 2546256065Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2547256065Strasz cs = PDU_SESSION(request); 2548256065Strasz 2549256065Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2550256065Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2551256065Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2552256065Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2553256065Strasz 2554256065Strasz /* 2555256065Strasz * We need to record it so that we can properly report 2556256065Strasz * underflow/underflow. 2557256065Strasz */ 2558256065Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2559256065Strasz 2560265640Smav /* 2561273310Smav * Report write underflow as error since CTL and backends don't 2562273310Smav * really support it, and SCSI does not tell how to do it right. 2563265640Smav */ 2564273310Smav expected_len = ntohl(bhssc->bhssc_expected_data_transfer_length); 2565273310Smav if (io->scsiio.kern_rel_offset + io->scsiio.kern_data_len > 2566273310Smav expected_len) { 2567273310Smav io->scsiio.io_hdr.port_status = 43; 2568273310Smav io->scsiio.be_move_done(io); 2569273310Smav return; 2570273310Smav } 2571265640Smav 2572265497Strasz target_transfer_tag = 2573265497Strasz atomic_fetchadd_32(&cs->cs_target_transfer_tag, 1); 2574256065Strasz 2575255570Strasz#if 0 2576256065Strasz CFISCSI_SESSION_DEBUG(cs, "expecting Data-Out with initiator " 2577256065Strasz "task tag 0x%x, target transfer tag 0x%x", 2578256065Strasz bhssc->bhssc_initiator_task_tag, target_transfer_tag); 2579255570Strasz#endif 2580256065Strasz cdw = uma_zalloc(cfiscsi_data_wait_zone, M_NOWAIT | M_ZERO); 2581256065Strasz if (cdw == NULL) { 2582256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2583256065Strasz "allocate memory; dropping connection"); 2584256163Strasz ctl_set_busy(&io->scsiio); 2585256163Strasz io->scsiio.be_move_done(io); 2586256065Strasz cfiscsi_session_terminate(cs); 2587256163Strasz return; 2588256065Strasz } 2589256065Strasz cdw->cdw_ctl_io = io; 2590265489Strasz cdw->cdw_target_transfer_tag = target_transfer_tag; 2591256065Strasz cdw->cdw_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2592273310Smav cdw->cdw_r2t_end = io->scsiio.kern_data_len; 2593276613Smav cdw->cdw_datasn = 0; 2594256065Strasz 2595273310Smav /* Set initial data pointer for the CDW respecting ext_data_filled. */ 2596273310Smav if (io->scsiio.kern_sg_entries > 0) { 2597273310Smav ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2598273310Smav } else { 2599273310Smav ctl_sglist = &ctl_sg_entry; 2600273310Smav ctl_sglist->addr = io->scsiio.kern_data_ptr; 2601273310Smav ctl_sglist->len = io->scsiio.kern_data_len; 2602273310Smav } 2603273310Smav cdw->cdw_sg_index = 0; 2604273310Smav cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 2605273310Smav cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 2606273310Smav r2t_off = io->scsiio.ext_data_filled; 2607273310Smav while (r2t_off > 0) { 2608273310Smav if (r2t_off >= cdw->cdw_sg_len) { 2609273310Smav r2t_off -= cdw->cdw_sg_len; 2610273310Smav cdw->cdw_sg_index++; 2611273310Smav cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 2612273310Smav cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 2613273310Smav continue; 2614273310Smav } 2615273310Smav cdw->cdw_sg_addr += r2t_off; 2616273310Smav cdw->cdw_sg_len -= r2t_off; 2617273310Smav r2t_off = 0; 2618273310Smav } 2619273310Smav 2620273310Smav if (cs->cs_immediate_data && 2621273310Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled < 2622268141Smav icl_pdu_data_segment_length(request)) { 2623256065Strasz done = cfiscsi_handle_data_segment(request, cdw); 2624256065Strasz if (done) { 2625256065Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2626256065Strasz io->scsiio.be_move_done(io); 2627256065Strasz return; 2628255837Strasz } 2629256065Strasz } 2630255570Strasz 2631273310Smav r2t_off = io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled; 2632273310Smav r2t_len = MIN(io->scsiio.kern_data_len - io->scsiio.ext_data_filled, 2633273310Smav cs->cs_max_burst_length); 2634273310Smav cdw->cdw_r2t_end = io->scsiio.ext_data_filled + r2t_len; 2635273310Smav 2636256065Strasz CFISCSI_SESSION_LOCK(cs); 2637256065Strasz TAILQ_INSERT_TAIL(&cs->cs_waiting_for_data_out, cdw, cdw_next); 2638256065Strasz CFISCSI_SESSION_UNLOCK(cs); 2639255570Strasz 2640256065Strasz /* 2641256065Strasz * XXX: We should limit the number of outstanding R2T PDUs 2642256065Strasz * per task to MaxOutstandingR2T. 2643256065Strasz */ 2644256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2645256065Strasz if (response == NULL) { 2646256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2647256065Strasz "allocate memory; dropping connection"); 2648256163Strasz ctl_set_busy(&io->scsiio); 2649256163Strasz io->scsiio.be_move_done(io); 2650256065Strasz cfiscsi_session_terminate(cs); 2651256163Strasz return; 2652255570Strasz } 2653256065Strasz bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 2654256065Strasz bhsr2t->bhsr2t_opcode = ISCSI_BHS_OPCODE_R2T; 2655256065Strasz bhsr2t->bhsr2t_flags = 0x80; 2656256065Strasz bhsr2t->bhsr2t_lun = bhssc->bhssc_lun; 2657256065Strasz bhsr2t->bhsr2t_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2658265489Strasz bhsr2t->bhsr2t_target_transfer_tag = target_transfer_tag; 2659256065Strasz /* 2660256065Strasz * XXX: Here we assume that cfiscsi_datamove() won't ever 2661256065Strasz * be running concurrently on several CPUs for a given 2662256065Strasz * command. 2663256065Strasz */ 2664256065Strasz bhsr2t->bhsr2t_r2tsn = htonl(PDU_R2TSN(request)); 2665256065Strasz PDU_R2TSN(request)++; 2666256065Strasz /* 2667256065Strasz * This is the offset within the current SCSI command; 2668256065Strasz * i.e. for the first call of datamove(), it will be 0, 2669256065Strasz * and for subsequent ones it will be the sum of lengths 2670256065Strasz * of previous ones. 2671256065Strasz * 2672256065Strasz * The ext_data_filled is to account for unsolicited 2673256065Strasz * (immediate) data that might have already arrived. 2674256065Strasz */ 2675273310Smav bhsr2t->bhsr2t_buffer_offset = htonl(r2t_off); 2676256065Strasz /* 2677256065Strasz * This is the total length (sum of S/G lengths) this call 2678273310Smav * to cfiscsi_datamove() is supposed to handle, limited by 2679273310Smav * MaxBurstLength. 2680256065Strasz */ 2681273310Smav bhsr2t->bhsr2t_desired_data_transfer_length = htonl(r2t_len); 2682256065Strasz cfiscsi_pdu_queue(response); 2683255570Strasz} 2684255570Strasz 2685255570Straszstatic void 2686256065Straszcfiscsi_datamove(union ctl_io *io) 2687256065Strasz{ 2688256065Strasz 2689256065Strasz if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 2690256065Strasz cfiscsi_datamove_in(io); 2691273310Smav else { 2692273310Smav /* We hadn't received anything during this datamove yet. */ 2693273310Smav io->scsiio.ext_data_filled = 0; 2694256065Strasz cfiscsi_datamove_out(io); 2695273310Smav } 2696256065Strasz} 2697256065Strasz 2698256065Straszstatic void 2699255570Straszcfiscsi_scsi_command_done(union ctl_io *io) 2700255570Strasz{ 2701255570Strasz struct icl_pdu *request, *response; 2702255570Strasz struct iscsi_bhs_scsi_command *bhssc; 2703255570Strasz struct iscsi_bhs_scsi_response *bhssr; 2704255570Strasz#ifdef DIAGNOSTIC 2705255570Strasz struct cfiscsi_data_wait *cdw; 2706255570Strasz#endif 2707255570Strasz struct cfiscsi_session *cs; 2708255570Strasz uint16_t sense_length; 2709255570Strasz 2710255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2711255570Strasz cs = PDU_SESSION(request); 2712255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2713255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2714255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2715255570Strasz ("replying to wrong opcode 0x%x", bhssc->bhssc_opcode)); 2716255570Strasz 2717255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 2718255570Strasz // bhssc->bhssc_initiator_task_tag); 2719255570Strasz 2720255570Strasz#ifdef DIAGNOSTIC 2721255570Strasz CFISCSI_SESSION_LOCK(cs); 2722255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) 2723255570Strasz KASSERT(bhssc->bhssc_initiator_task_tag != 2724255570Strasz cdw->cdw_initiator_task_tag, ("dangling cdw")); 2725255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2726255570Strasz#endif 2727255570Strasz 2728268554Smav /* 2729268554Smav * Do not return status for aborted commands. 2730268554Smav * There are exceptions, but none supported by CTL yet. 2731268554Smav */ 2732275881Smav if (((io->io_hdr.flags & CTL_FLAG_ABORT) && 2733275881Smav (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) || 2734275881Smav (io->io_hdr.flags & CTL_FLAG_STATUS_SENT)) { 2735268554Smav ctl_free_io(io); 2736268554Smav icl_pdu_free(request); 2737268554Smav return; 2738268554Smav } 2739268554Smav 2740255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2741255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 2742255570Strasz bhssr->bhssr_opcode = ISCSI_BHS_OPCODE_SCSI_RESPONSE; 2743255570Strasz bhssr->bhssr_flags = 0x80; 2744255570Strasz /* 2745255570Strasz * XXX: We don't deal with bidirectional under/overflows; 2746255570Strasz * does anything actually support those? 2747255570Strasz */ 2748255570Strasz if (PDU_TOTAL_TRANSFER_LEN(request) < 2749255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2750255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_UNDERFLOW; 2751255570Strasz bhssr->bhssr_residual_count = 2752255570Strasz htonl(ntohl(bhssc->bhssc_expected_data_transfer_length) - 2753255570Strasz PDU_TOTAL_TRANSFER_LEN(request)); 2754255570Strasz //CFISCSI_SESSION_DEBUG(cs, "underflow; residual count %d", 2755255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2756255570Strasz } else if (PDU_TOTAL_TRANSFER_LEN(request) > 2757255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2758255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_OVERFLOW; 2759255570Strasz bhssr->bhssr_residual_count = 2760255570Strasz htonl(PDU_TOTAL_TRANSFER_LEN(request) - 2761255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)); 2762255570Strasz //CFISCSI_SESSION_DEBUG(cs, "overflow; residual count %d", 2763255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2764255570Strasz } 2765255570Strasz bhssr->bhssr_response = BHSSR_RESPONSE_COMMAND_COMPLETED; 2766255570Strasz bhssr->bhssr_status = io->scsiio.scsi_status; 2767255570Strasz bhssr->bhssr_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2768255570Strasz bhssr->bhssr_expdatasn = htonl(PDU_EXPDATASN(request)); 2769255570Strasz 2770255570Strasz if (io->scsiio.sense_len > 0) { 2771255570Strasz#if 0 2772255570Strasz CFISCSI_SESSION_DEBUG(cs, "returning %d bytes of sense data", 2773255570Strasz io->scsiio.sense_len); 2774255570Strasz#endif 2775255570Strasz sense_length = htons(io->scsiio.sense_len); 2776255570Strasz icl_pdu_append_data(response, 2777255570Strasz &sense_length, sizeof(sense_length), M_WAITOK); 2778255570Strasz icl_pdu_append_data(response, 2779255570Strasz &io->scsiio.sense_data, io->scsiio.sense_len, M_WAITOK); 2780255570Strasz } 2781255570Strasz 2782255570Strasz ctl_free_io(io); 2783255570Strasz icl_pdu_free(request); 2784255570Strasz cfiscsi_pdu_queue(response); 2785255570Strasz} 2786255570Strasz 2787255570Straszstatic void 2788255570Straszcfiscsi_task_management_done(union ctl_io *io) 2789255570Strasz{ 2790255570Strasz struct icl_pdu *request, *response; 2791255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 2792255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 2793255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 2794255570Strasz struct cfiscsi_session *cs; 2795255570Strasz 2796255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2797255570Strasz cs = PDU_SESSION(request); 2798255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2799255570Strasz KASSERT((bhstmr->bhstmr_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2800255570Strasz ISCSI_BHS_OPCODE_TASK_REQUEST, 2801255570Strasz ("replying to wrong opcode 0x%x", bhstmr->bhstmr_opcode)); 2802255570Strasz 2803255570Strasz#if 0 2804255570Strasz CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x; referenced task tag 0x%x", 2805255570Strasz bhstmr->bhstmr_initiator_task_tag, 2806255570Strasz bhstmr->bhstmr_referenced_task_tag); 2807255570Strasz#endif 2808255570Strasz 2809255570Strasz if ((bhstmr->bhstmr_function & ~0x80) == 2810255570Strasz BHSTMR_FUNCTION_ABORT_TASK) { 2811255570Strasz /* 2812255570Strasz * Make sure we no longer wait for Data-Out for this command. 2813255570Strasz */ 2814255570Strasz CFISCSI_SESSION_LOCK(cs); 2815255570Strasz TAILQ_FOREACH_SAFE(cdw, 2816255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 2817255570Strasz if (bhstmr->bhstmr_referenced_task_tag != 2818255570Strasz cdw->cdw_initiator_task_tag) 2819255570Strasz continue; 2820255570Strasz 2821255570Strasz#if 0 2822255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task " 2823255570Strasz "tag 0x%x", bhstmr->bhstmr_initiator_task_tag); 2824255570Strasz#endif 2825255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, 2826255570Strasz cdw, cdw_next); 2827255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 2828255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2829255570Strasz } 2830255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2831255570Strasz } 2832255570Strasz 2833255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2834255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 2835255570Strasz response->ip_bhs; 2836255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 2837255570Strasz bhstmr2->bhstmr_flags = 0x80; 2838255570Strasz if (io->io_hdr.status == CTL_SUCCESS) { 2839255570Strasz bhstmr2->bhstmr_response = BHSTMR_RESPONSE_FUNCTION_COMPLETE; 2840255570Strasz } else { 2841255570Strasz /* 2842255570Strasz * XXX: How to figure out what exactly went wrong? iSCSI spec 2843255570Strasz * expects us to provide detailed error, e.g. "Task does 2844255570Strasz * not exist" or "LUN does not exist". 2845255570Strasz */ 2846255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED"); 2847255570Strasz bhstmr2->bhstmr_response = 2848255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 2849255570Strasz } 2850255570Strasz bhstmr2->bhstmr_initiator_task_tag = bhstmr->bhstmr_initiator_task_tag; 2851255570Strasz 2852255570Strasz ctl_free_io(io); 2853255570Strasz icl_pdu_free(request); 2854255570Strasz cfiscsi_pdu_queue(response); 2855255570Strasz} 2856255570Strasz 2857255570Straszstatic void 2858255570Straszcfiscsi_done(union ctl_io *io) 2859255570Strasz{ 2860255570Strasz struct icl_pdu *request; 2861255570Strasz struct cfiscsi_session *cs; 2862255570Strasz 2863255570Strasz KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 2864255570Strasz ("invalid CTL status %#x", io->io_hdr.status)); 2865255570Strasz 2866268690Smav if (io->io_hdr.io_type == CTL_IO_TASK && 2867268690Smav io->taskio.task_action == CTL_TASK_I_T_NEXUS_RESET) { 2868255570Strasz /* 2869255570Strasz * Implicit task termination has just completed; nothing to do. 2870255570Strasz */ 2871268690Smav cs = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2872268691Smav cs->cs_tasks_aborted = true; 2873268690Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 2874268691Smav wakeup(__DEVOLATILE(void *, &cs->cs_outstanding_ctl_pdus)); 2875268690Smav ctl_free_io(io); 2876255570Strasz return; 2877255570Strasz } 2878255570Strasz 2879268690Smav request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2880255570Strasz cs = PDU_SESSION(request); 2881255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 2882255570Strasz 2883255570Strasz switch (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) { 2884255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 2885255570Strasz cfiscsi_scsi_command_done(io); 2886255570Strasz break; 2887255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 2888255570Strasz cfiscsi_task_management_done(io); 2889255570Strasz break; 2890255570Strasz default: 2891255570Strasz panic("cfiscsi_done called with wrong opcode 0x%x", 2892255570Strasz request->ip_bhs->bhs_opcode); 2893255570Strasz } 2894255570Strasz} 2895