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 * $FreeBSD$ 30255570Strasz */ 31255570Strasz 32255570Strasz/* 33255570Strasz * CTL frontend for the iSCSI protocol. 34255570Strasz */ 35255570Strasz 36255570Strasz#include <sys/cdefs.h> 37255570Strasz__FBSDID("$FreeBSD$"); 38255570Strasz 39255570Strasz#include <sys/param.h> 40255570Strasz#include <sys/capability.h> 41255570Strasz#include <sys/condvar.h> 42255570Strasz#include <sys/file.h> 43255570Strasz#include <sys/kernel.h> 44255570Strasz#include <sys/kthread.h> 45255570Strasz#include <sys/lock.h> 46255570Strasz#include <sys/malloc.h> 47255570Strasz#include <sys/module.h> 48255570Strasz#include <sys/mutex.h> 49255570Strasz#include <sys/queue.h> 50255570Strasz#include <sys/sbuf.h> 51255570Strasz#include <sys/sysctl.h> 52255570Strasz#include <sys/systm.h> 53255570Strasz#include <sys/uio.h> 54255570Strasz#include <sys/unistd.h> 55255570Strasz#include <vm/uma.h> 56255570Strasz 57255570Strasz#include <cam/scsi/scsi_all.h> 58255570Strasz#include <cam/scsi/scsi_da.h> 59255570Strasz#include <cam/ctl/ctl_io.h> 60255570Strasz#include <cam/ctl/ctl.h> 61255570Strasz#include <cam/ctl/ctl_backend.h> 62256163Strasz#include <cam/ctl/ctl_error.h> 63255570Strasz#include <cam/ctl/ctl_frontend.h> 64255570Strasz#include <cam/ctl/ctl_frontend_internal.h> 65255570Strasz#include <cam/ctl/ctl_debug.h> 66255570Strasz#include <cam/ctl/ctl_ha.h> 67255570Strasz#include <cam/ctl/ctl_ioctl.h> 68255570Strasz#include <cam/ctl/ctl_private.h> 69255570Strasz 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"); 87255570Straszstatic int debug = 3; 88255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.debug", &debug); 89265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 90255570Strasz &debug, 1, "Enable debug messages"); 91255570Straszstatic int ping_timeout = 5; 92255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.ping_timeout", &ping_timeout); 93265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, 94255570Strasz &ping_timeout, 5, "Interval between ping (NOP-Out) requests, in seconds"); 95255570Straszstatic int login_timeout = 60; 96255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.login_timeout", &login_timeout); 97265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, 98255570Strasz &login_timeout, 60, "Time to wait for ctld(8) to finish Login Phase, in seconds"); 99255570Straszstatic int maxcmdsn_delta = 256; 100255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.maxcmdsn_delta", &maxcmdsn_delta); 101265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, maxcmdsn_delta, CTLFLAG_RWTUN, 102255570Strasz &maxcmdsn_delta, 256, "Number of commands the initiator can send " 103255570Strasz "without confirmation"); 104255570Strasz 105265505Strasz#define CFISCSI_DEBUG(X, ...) \ 106265505Strasz do { \ 107265505Strasz if (debug > 1) { \ 108265505Strasz printf("%s: " X "\n", \ 109265505Strasz __func__, ## __VA_ARGS__); \ 110265505Strasz } \ 111255570Strasz } while (0) 112255570Strasz 113265505Strasz#define CFISCSI_WARN(X, ...) \ 114265505Strasz do { \ 115265505Strasz if (debug > 0) { \ 116265505Strasz printf("WARNING: %s: " X "\n", \ 117265505Strasz __func__, ## __VA_ARGS__); \ 118265505Strasz } \ 119255570Strasz } while (0) 120255570Strasz 121265505Strasz#define CFISCSI_SESSION_DEBUG(S, X, ...) \ 122265505Strasz do { \ 123265505Strasz if (debug > 1) { \ 124265505Strasz printf("%s: %s (%s): " X "\n", \ 125265505Strasz __func__, S->cs_initiator_addr, \ 126265505Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 127265505Strasz } \ 128255570Strasz } while (0) 129255570Strasz 130265505Strasz#define CFISCSI_SESSION_WARN(S, X, ...) \ 131265505Strasz do { \ 132265505Strasz if (debug > 0) { \ 133265505Strasz printf("WARNING: %s (%s): " X "\n", \ 134265505Strasz S->cs_initiator_addr, \ 135265505Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 136265505Strasz } \ 137255570Strasz } while (0) 138255570Strasz 139255570Strasz#define CFISCSI_SESSION_LOCK(X) mtx_lock(&X->cs_lock) 140255570Strasz#define CFISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->cs_lock) 141255570Strasz#define CFISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->cs_lock, MA_OWNED) 142255570Strasz 143255570Strasz#define CONN_SESSION(X) ((struct cfiscsi_session *)(X)->ic_prv0) 144255570Strasz#define PDU_SESSION(X) CONN_SESSION((X)->ip_conn) 145255570Strasz#define PDU_EXPDATASN(X) (X)->ip_prv0 146255570Strasz#define PDU_TOTAL_TRANSFER_LEN(X) (X)->ip_prv1 147255570Strasz#define PDU_R2TSN(X) (X)->ip_prv2 148255570Strasz 149255570Straszint cfiscsi_init(void); 150255570Straszstatic void cfiscsi_online(void *arg); 151255570Straszstatic void cfiscsi_offline(void *arg); 152268688Smavstatic int cfiscsi_info(void *arg, struct sbuf *sb); 153255570Straszstatic int cfiscsi_lun_enable(void *arg, 154255570Strasz struct ctl_id target_id, int lun_id); 155255570Straszstatic int cfiscsi_lun_disable(void *arg, 156255570Strasz struct ctl_id target_id, int lun_id); 157268685Smavstatic uint32_t cfiscsi_lun_map(void *arg, uint32_t lun); 158255570Straszstatic int cfiscsi_ioctl(struct cdev *dev, 159255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td); 160255570Straszstatic void cfiscsi_datamove(union ctl_io *io); 161255570Straszstatic void cfiscsi_done(union ctl_io *io); 162255848Straszstatic bool cfiscsi_pdu_update_cmdsn(const struct icl_pdu *request); 163255570Straszstatic void cfiscsi_pdu_handle_nop_out(struct icl_pdu *request); 164255570Straszstatic void cfiscsi_pdu_handle_scsi_command(struct icl_pdu *request); 165255570Straszstatic void cfiscsi_pdu_handle_task_request(struct icl_pdu *request); 166255570Straszstatic void cfiscsi_pdu_handle_data_out(struct icl_pdu *request); 167255570Straszstatic void cfiscsi_pdu_handle_logout_request(struct icl_pdu *request); 168255570Straszstatic void cfiscsi_session_terminate(struct cfiscsi_session *cs); 169255570Straszstatic struct cfiscsi_target *cfiscsi_target_find(struct cfiscsi_softc 170255570Strasz *softc, const char *name); 171268682Smavstatic struct cfiscsi_target *cfiscsi_target_find_or_create( 172268682Smav struct cfiscsi_softc *softc, const char *name, const char *alias); 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 192255570Strasz return (icl_pdu_new_bhs(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 238255570Strasz /* 239255848Strasz * The target MUST silently ignore any non-immediate command outside 240255848Strasz * of this range. 241255570Strasz */ 242255848Strasz if (cmdsn < cs->cs_cmdsn || cmdsn > cs->cs_cmdsn + maxcmdsn_delta) { 243255848Strasz CFISCSI_SESSION_UNLOCK(cs); 244255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with CmdSN %d, " 245255570Strasz "while expected CmdSN was %d", cmdsn, cs->cs_cmdsn); 246255848Strasz return (true); 247255570Strasz } 248255570Strasz 249255570Strasz if ((request->ip_bhs->bhs_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 250255570Strasz cs->cs_cmdsn++; 251255570Strasz 252255570Strasz CFISCSI_SESSION_UNLOCK(cs); 253255848Strasz 254255848Strasz return (false); 255255570Strasz} 256255570Strasz 257255570Straszstatic void 258255570Straszcfiscsi_pdu_handle(struct icl_pdu *request) 259255570Strasz{ 260255570Strasz struct cfiscsi_session *cs; 261255848Strasz bool ignore; 262255570Strasz 263255570Strasz cs = PDU_SESSION(request); 264255570Strasz 265255848Strasz ignore = cfiscsi_pdu_update_cmdsn(request); 266255848Strasz if (ignore) { 267255848Strasz icl_pdu_free(request); 268255848Strasz return; 269255848Strasz } 270255570Strasz 271255570Strasz /* 272255570Strasz * Handle the PDU; this includes e.g. receiving the remaining 273255570Strasz * part of PDU and submitting the SCSI command to CTL 274255570Strasz * or queueing a reply. The handling routine is responsible 275255570Strasz * for freeing the PDU when it's no longer needed. 276255570Strasz */ 277255570Strasz switch (request->ip_bhs->bhs_opcode & 278255570Strasz ~ISCSI_BHS_OPCODE_IMMEDIATE) { 279255570Strasz case ISCSI_BHS_OPCODE_NOP_OUT: 280255570Strasz cfiscsi_pdu_handle_nop_out(request); 281255570Strasz break; 282255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 283255570Strasz cfiscsi_pdu_handle_scsi_command(request); 284255570Strasz break; 285255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 286255570Strasz cfiscsi_pdu_handle_task_request(request); 287255570Strasz break; 288255570Strasz case ISCSI_BHS_OPCODE_SCSI_DATA_OUT: 289255570Strasz cfiscsi_pdu_handle_data_out(request); 290255570Strasz break; 291255570Strasz case ISCSI_BHS_OPCODE_LOGOUT_REQUEST: 292255570Strasz cfiscsi_pdu_handle_logout_request(request); 293255570Strasz break; 294255570Strasz default: 295255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with unsupported " 296255570Strasz "opcode 0x%x; dropping connection", 297255570Strasz request->ip_bhs->bhs_opcode); 298256197Strasz icl_pdu_free(request); 299255570Strasz cfiscsi_session_terminate(cs); 300255570Strasz } 301255570Strasz 302255570Strasz} 303255570Strasz 304255570Straszstatic void 305255570Straszcfiscsi_receive_callback(struct icl_pdu *request) 306255570Strasz{ 307255570Strasz struct cfiscsi_session *cs; 308255570Strasz 309255570Strasz cs = PDU_SESSION(request); 310255570Strasz 311255570Strasz#ifdef ICL_KERNEL_PROXY 312255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 313255570Strasz if (cs->cs_login_pdu == NULL) 314255570Strasz cs->cs_login_pdu = request; 315255570Strasz else 316255570Strasz icl_pdu_free(request); 317255570Strasz cv_signal(&cs->cs_login_cv); 318255570Strasz return; 319255570Strasz } 320255570Strasz#endif 321255570Strasz 322255570Strasz cfiscsi_pdu_handle(request); 323255570Strasz} 324255570Strasz 325255570Straszstatic void 326255570Straszcfiscsi_error_callback(struct icl_conn *ic) 327255570Strasz{ 328255570Strasz struct cfiscsi_session *cs; 329255570Strasz 330255570Strasz cs = CONN_SESSION(ic); 331255570Strasz 332255570Strasz CFISCSI_SESSION_WARN(cs, "connection error; dropping connection"); 333255570Strasz cfiscsi_session_terminate(cs); 334255570Strasz} 335255570Strasz 336255570Straszstatic int 337255570Straszcfiscsi_pdu_prepare(struct icl_pdu *response) 338255570Strasz{ 339255570Strasz struct cfiscsi_session *cs; 340255570Strasz struct iscsi_bhs_scsi_response *bhssr; 341255570Strasz bool advance_statsn = true; 342255570Strasz 343255570Strasz cs = PDU_SESSION(response); 344255570Strasz 345255570Strasz CFISCSI_SESSION_LOCK_ASSERT(cs); 346255570Strasz 347255570Strasz /* 348255570Strasz * We're only using fields common for all the response 349255570Strasz * (target -> initiator) PDUs. 350255570Strasz */ 351255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 352255570Strasz 353255570Strasz /* 354255570Strasz * 10.8.3: "The StatSN for this connection is not advanced 355255570Strasz * after this PDU is sent." 356255570Strasz */ 357255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_R2T) 358255570Strasz advance_statsn = false; 359255570Strasz 360255570Strasz /* 361255570Strasz * 10.19.2: "However, when the Initiator Task Tag is set to 0xffffffff, 362255570Strasz * StatSN for the connection is not advanced after this PDU is sent." 363255570Strasz */ 364255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_NOP_IN && 365255570Strasz bhssr->bhssr_initiator_task_tag == 0xffffffff) 366255570Strasz advance_statsn = false; 367255570Strasz 368255570Strasz /* 369255570Strasz * See the comment below - StatSN is not meaningful and must 370255570Strasz * not be advanced. 371255570Strasz */ 372255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_SCSI_DATA_IN) 373255570Strasz advance_statsn = false; 374255570Strasz 375255570Strasz /* 376255570Strasz * 10.7.3: "The fields StatSN, Status, and Residual Count 377255570Strasz * only have meaningful content if the S bit is set to 1." 378255570Strasz */ 379255570Strasz if (bhssr->bhssr_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN) 380255570Strasz bhssr->bhssr_statsn = htonl(cs->cs_statsn); 381255570Strasz bhssr->bhssr_expcmdsn = htonl(cs->cs_cmdsn); 382255570Strasz bhssr->bhssr_maxcmdsn = htonl(cs->cs_cmdsn + maxcmdsn_delta); 383255570Strasz 384255570Strasz if (advance_statsn) 385255570Strasz cs->cs_statsn++; 386255570Strasz 387255570Strasz return (0); 388255570Strasz} 389255570Strasz 390255570Straszstatic void 391255570Straszcfiscsi_pdu_queue(struct icl_pdu *response) 392255570Strasz{ 393255570Strasz struct cfiscsi_session *cs; 394255570Strasz 395255570Strasz cs = PDU_SESSION(response); 396255570Strasz 397255570Strasz CFISCSI_SESSION_LOCK(cs); 398255570Strasz cfiscsi_pdu_prepare(response); 399255570Strasz icl_pdu_queue(response); 400255570Strasz CFISCSI_SESSION_UNLOCK(cs); 401255570Strasz} 402255570Strasz 403255570Straszstatic uint32_t 404255570Straszcfiscsi_decode_lun(uint64_t encoded) 405255570Strasz{ 406255570Strasz uint8_t lun[8]; 407255570Strasz uint32_t result; 408255570Strasz 409255570Strasz /* 410255570Strasz * The LUN field in iSCSI PDUs may look like an ordinary 64 bit number, 411255570Strasz * but is in fact an evil, multidimensional structure defined 412255570Strasz * in SCSI Architecture Model 5 (SAM-5), section 4.6. 413255570Strasz */ 414255570Strasz memcpy(lun, &encoded, sizeof(lun)); 415255570Strasz switch (lun[0] & 0xC0) { 416255570Strasz case 0x00: 417255570Strasz if ((lun[0] & 0x3f) != 0 || lun[2] != 0 || lun[3] != 0 || 418255570Strasz lun[4] != 0 || lun[5] != 0 || lun[6] != 0 || lun[7] != 0) { 419255570Strasz CFISCSI_WARN("malformed LUN " 420255570Strasz "(peripheral device addressing method): 0x%jx", 421255570Strasz (uintmax_t)encoded); 422255570Strasz result = 0xffffffff; 423255570Strasz break; 424255570Strasz } 425255570Strasz result = lun[1]; 426255570Strasz break; 427255570Strasz case 0x40: 428255570Strasz if (lun[2] != 0 || lun[3] != 0 || lun[4] != 0 || lun[5] != 0 || 429255570Strasz lun[6] != 0 || lun[7] != 0) { 430255570Strasz CFISCSI_WARN("malformed LUN " 431255570Strasz "(flat address space addressing method): 0x%jx", 432255570Strasz (uintmax_t)encoded); 433255570Strasz result = 0xffffffff; 434255570Strasz break; 435255570Strasz } 436255570Strasz result = ((lun[0] & 0x3f) << 8) + lun[1]; 437255570Strasz break; 438255570Strasz case 0xC0: 439255570Strasz if (lun[0] != 0xD2 || lun[4] != 0 || lun[5] != 0 || 440255570Strasz lun[6] != 0 || lun[7] != 0) { 441255570Strasz CFISCSI_WARN("malformed LUN (extended flat " 442255570Strasz "address space addressing method): 0x%jx", 443255570Strasz (uintmax_t)encoded); 444255570Strasz result = 0xffffffff; 445255570Strasz break; 446255570Strasz } 447255570Strasz result = (lun[1] << 16) + (lun[2] << 8) + lun[3]; 448255570Strasz default: 449255570Strasz CFISCSI_WARN("unsupported LUN format 0x%jx", 450255570Strasz (uintmax_t)encoded); 451255570Strasz result = 0xffffffff; 452255570Strasz break; 453255570Strasz } 454255570Strasz 455255570Strasz return (result); 456255570Strasz} 457255570Strasz 458255570Straszstatic void 459255570Straszcfiscsi_pdu_handle_nop_out(struct icl_pdu *request) 460255570Strasz{ 461255570Strasz struct cfiscsi_session *cs; 462255570Strasz struct iscsi_bhs_nop_out *bhsno; 463255570Strasz struct iscsi_bhs_nop_in *bhsni; 464255570Strasz struct icl_pdu *response; 465256187Strasz void *data = NULL; 466256187Strasz size_t datasize; 467256187Strasz int error; 468255570Strasz 469255570Strasz cs = PDU_SESSION(request); 470255570Strasz bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 471255570Strasz 472255570Strasz if (bhsno->bhsno_initiator_task_tag == 0xffffffff) { 473255570Strasz /* 474255570Strasz * Nothing to do, iscsi_pdu_update_statsn() already 475255570Strasz * zeroed the timeout. 476255570Strasz */ 477255570Strasz icl_pdu_free(request); 478255570Strasz return; 479255570Strasz } 480255570Strasz 481256187Strasz datasize = icl_pdu_data_segment_length(request); 482256187Strasz if (datasize > 0) { 483256187Strasz data = malloc(datasize, M_CFISCSI, M_NOWAIT | M_ZERO); 484256187Strasz if (data == NULL) { 485256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 486256187Strasz "dropping connection"); 487256187Strasz icl_pdu_free(request); 488256187Strasz cfiscsi_session_terminate(cs); 489256187Strasz return; 490256187Strasz } 491256187Strasz icl_pdu_get_data(request, 0, data, datasize); 492256187Strasz } 493256187Strasz 494255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 495255570Strasz if (response == NULL) { 496256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 497256187Strasz "droppping connection"); 498256187Strasz free(data, M_CFISCSI); 499255570Strasz icl_pdu_free(request); 500256187Strasz cfiscsi_session_terminate(cs); 501255570Strasz return; 502255570Strasz } 503255570Strasz bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 504255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 505255570Strasz bhsni->bhsni_flags = 0x80; 506255570Strasz bhsni->bhsni_initiator_task_tag = bhsno->bhsno_initiator_task_tag; 507255570Strasz bhsni->bhsni_target_transfer_tag = 0xffffffff; 508256187Strasz if (datasize > 0) { 509256187Strasz error = icl_pdu_append_data(response, data, datasize, M_NOWAIT); 510256187Strasz if (error != 0) { 511256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 512256187Strasz "dropping connection"); 513256187Strasz free(data, M_CFISCSI); 514256187Strasz icl_pdu_free(request); 515256187Strasz icl_pdu_free(response); 516256187Strasz cfiscsi_session_terminate(cs); 517256187Strasz return; 518256187Strasz } 519256187Strasz free(data, M_CFISCSI); 520256187Strasz } 521255570Strasz 522255570Strasz icl_pdu_free(request); 523255570Strasz cfiscsi_pdu_queue(response); 524255570Strasz} 525255570Strasz 526255570Straszstatic void 527255570Straszcfiscsi_pdu_handle_scsi_command(struct icl_pdu *request) 528255570Strasz{ 529255570Strasz struct iscsi_bhs_scsi_command *bhssc; 530255570Strasz struct cfiscsi_session *cs; 531255570Strasz union ctl_io *io; 532255570Strasz int error; 533255570Strasz 534255570Strasz cs = PDU_SESSION(request); 535255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 536255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 537255570Strasz // bhssc->bhssc_initiator_task_tag); 538255570Strasz 539255570Strasz if (request->ip_data_len > 0 && cs->cs_immediate_data == false) { 540255570Strasz CFISCSI_SESSION_WARN(cs, "unsolicited data with " 541255570Strasz "ImmediateData=No; dropping connection"); 542256197Strasz icl_pdu_free(request); 543255570Strasz cfiscsi_session_terminate(cs); 544255570Strasz return; 545255570Strasz } 546268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 547255570Strasz if (io == NULL) { 548256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io; " 549256197Strasz "dropping connection"); 550255570Strasz icl_pdu_free(request); 551256197Strasz cfiscsi_session_terminate(cs); 552255570Strasz return; 553255570Strasz } 554255570Strasz ctl_zero_io(io); 555255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 556255570Strasz io->io_hdr.io_type = CTL_IO_SCSI; 557255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 558268682Smav io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 559255570Strasz io->io_hdr.nexus.targ_target.id = 0; 560255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhssc->bhssc_lun); 561255570Strasz io->scsiio.tag_num = bhssc->bhssc_initiator_task_tag; 562255570Strasz switch ((bhssc->bhssc_flags & BHSSC_FLAGS_ATTR)) { 563255570Strasz case BHSSC_FLAGS_ATTR_UNTAGGED: 564255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 565255570Strasz break; 566255570Strasz case BHSSC_FLAGS_ATTR_SIMPLE: 567255570Strasz io->scsiio.tag_type = CTL_TAG_SIMPLE; 568255570Strasz break; 569255570Strasz case BHSSC_FLAGS_ATTR_ORDERED: 570255570Strasz io->scsiio.tag_type = CTL_TAG_ORDERED; 571255570Strasz break; 572255570Strasz case BHSSC_FLAGS_ATTR_HOQ: 573255570Strasz io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 574255570Strasz break; 575255570Strasz case BHSSC_FLAGS_ATTR_ACA: 576255570Strasz io->scsiio.tag_type = CTL_TAG_ACA; 577255570Strasz break; 578255570Strasz default: 579255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 580255570Strasz CFISCSI_SESSION_WARN(cs, "unhandled tag type %d", 581255570Strasz bhssc->bhssc_flags & BHSSC_FLAGS_ATTR); 582255570Strasz break; 583255570Strasz } 584255570Strasz io->scsiio.cdb_len = sizeof(bhssc->bhssc_cdb); /* Which is 16. */ 585255570Strasz memcpy(io->scsiio.cdb, bhssc->bhssc_cdb, sizeof(bhssc->bhssc_cdb)); 586255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 587255570Strasz error = ctl_queue(io); 588255570Strasz if (error != CTL_RETVAL_COMPLETE) { 589256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 590256197Strasz "dropping connection", error); 591255570Strasz ctl_free_io(io); 592255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 593255570Strasz icl_pdu_free(request); 594256197Strasz cfiscsi_session_terminate(cs); 595255570Strasz } 596255570Strasz} 597255570Strasz 598255570Straszstatic void 599255570Straszcfiscsi_pdu_handle_task_request(struct icl_pdu *request) 600255570Strasz{ 601255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 602255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 603255570Strasz struct icl_pdu *response; 604255570Strasz struct cfiscsi_session *cs; 605255570Strasz union ctl_io *io; 606255570Strasz int error; 607255570Strasz 608255570Strasz cs = PDU_SESSION(request); 609255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 610268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 611255570Strasz if (io == NULL) { 612256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io;" 613256197Strasz "dropping connection"); 614255570Strasz icl_pdu_free(request); 615256197Strasz cfiscsi_session_terminate(cs); 616255570Strasz return; 617255570Strasz } 618255570Strasz ctl_zero_io(io); 619255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 620255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 621255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 622268682Smav io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 623255570Strasz io->io_hdr.nexus.targ_target.id = 0; 624255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhstmr->bhstmr_lun); 625255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 626255570Strasz 627255570Strasz switch (bhstmr->bhstmr_function & ~0x80) { 628255570Strasz case BHSTMR_FUNCTION_ABORT_TASK: 629255570Strasz#if 0 630255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK"); 631255570Strasz#endif 632255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 633255570Strasz io->taskio.tag_num = bhstmr->bhstmr_referenced_task_tag; 634255570Strasz break; 635268690Smav case BHSTMR_FUNCTION_ABORT_TASK_SET: 636268690Smav#if 0 637268690Smav CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK_SET"); 638268690Smav#endif 639268690Smav io->taskio.task_action = CTL_TASK_ABORT_TASK_SET; 640268690Smav break; 641255570Strasz case BHSTMR_FUNCTION_LOGICAL_UNIT_RESET: 642255570Strasz#if 0 643255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_LOGICAL_UNIT_RESET"); 644255570Strasz#endif 645255570Strasz io->taskio.task_action = CTL_TASK_LUN_RESET; 646255570Strasz break; 647264602Strasz case BHSTMR_FUNCTION_TARGET_WARM_RESET: 648255570Strasz#if 0 649264602Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_TARGET_WARM_RESET"); 650255570Strasz#endif 651264602Strasz io->taskio.task_action = CTL_TASK_TARGET_RESET; 652255570Strasz break; 653255570Strasz default: 654255570Strasz CFISCSI_SESSION_DEBUG(cs, "unsupported function 0x%x", 655255570Strasz bhstmr->bhstmr_function & ~0x80); 656255570Strasz ctl_free_io(io); 657255570Strasz 658255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 659255570Strasz if (response == NULL) { 660256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 661256197Strasz "dropping connection"); 662255570Strasz icl_pdu_free(request); 663256197Strasz cfiscsi_session_terminate(cs); 664255570Strasz return; 665255570Strasz } 666255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 667255570Strasz response->ip_bhs; 668255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 669255570Strasz bhstmr2->bhstmr_flags = 0x80; 670255570Strasz bhstmr2->bhstmr_response = 671255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 672255570Strasz bhstmr2->bhstmr_initiator_task_tag = 673255570Strasz bhstmr->bhstmr_initiator_task_tag; 674255570Strasz icl_pdu_free(request); 675255570Strasz cfiscsi_pdu_queue(response); 676255570Strasz return; 677255570Strasz } 678255570Strasz 679255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 680255570Strasz error = ctl_queue(io); 681255570Strasz if (error != CTL_RETVAL_COMPLETE) { 682256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 683256197Strasz "dropping connection", error); 684255570Strasz ctl_free_io(io); 685255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 686255570Strasz icl_pdu_free(request); 687256197Strasz cfiscsi_session_terminate(cs); 688255570Strasz } 689255570Strasz} 690255570Strasz 691255570Straszstatic bool 692255570Straszcfiscsi_handle_data_segment(struct icl_pdu *request, struct cfiscsi_data_wait *cdw) 693255570Strasz{ 694255570Strasz struct iscsi_bhs_data_out *bhsdo; 695255570Strasz struct cfiscsi_session *cs; 696255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 697256195Strasz size_t copy_len, len, off, buffer_offset; 698255570Strasz int ctl_sg_count; 699255570Strasz union ctl_io *io; 700255570Strasz 701255570Strasz cs = PDU_SESSION(request); 702255570Strasz 703255570Strasz KASSERT((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 704255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT || 705255570Strasz (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 706255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 707255570Strasz ("bad opcode 0x%x", request->ip_bhs->bhs_opcode)); 708255570Strasz 709255570Strasz /* 710265640Smav * We're only using fields common for Data-Out and SCSI Command PDUs. 711255570Strasz */ 712255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 713255570Strasz 714255570Strasz io = cdw->cdw_ctl_io; 715255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 716255570Strasz ("CTL_FLAG_DATA_IN")); 717255570Strasz 718255570Strasz#if 0 719255570Strasz CFISCSI_SESSION_DEBUG(cs, "received %zd bytes out of %d", 720255570Strasz request->ip_data_len, io->scsiio.kern_total_len); 721255570Strasz#endif 722255570Strasz 723255570Strasz if (io->scsiio.kern_sg_entries > 0) { 724255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 725255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 726255570Strasz } else { 727255570Strasz ctl_sglist = &ctl_sg_entry; 728255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 729255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 730255570Strasz ctl_sg_count = 1; 731255570Strasz } 732255570Strasz 733255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 734255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 735255570Strasz buffer_offset = ntohl(bhsdo->bhsdo_buffer_offset); 736255570Strasz else 737255570Strasz buffer_offset = 0; 738268141Smav len = icl_pdu_data_segment_length(request); 739255570Strasz 740255570Strasz /* 741255570Strasz * Make sure the offset, as sent by the initiator, matches the offset 742255570Strasz * we're supposed to be at in the scatter-gather list. 743255570Strasz */ 744268141Smav if (buffer_offset > 745268141Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled || 746268141Smav buffer_offset + len <= 747265640Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled) { 748255570Strasz CFISCSI_SESSION_WARN(cs, "received bad buffer offset %zd, " 749265640Smav "expected %zd; dropping connection", buffer_offset, 750265640Smav (size_t)io->scsiio.kern_rel_offset + 751255570Strasz (size_t)io->scsiio.ext_data_filled); 752265640Smav ctl_set_data_phase_error(&io->scsiio); 753255570Strasz cfiscsi_session_terminate(cs); 754255570Strasz return (true); 755255570Strasz } 756255570Strasz 757256195Strasz /* 758256195Strasz * This is the offset within the PDU data segment, as opposed 759256195Strasz * to buffer_offset, which is the offset within the task (SCSI 760256195Strasz * command). 761256195Strasz */ 762268141Smav off = io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled - 763268141Smav buffer_offset; 764256195Strasz 765256195Strasz /* 766256195Strasz * Iterate over the scatter/gather segments, filling them with data 767256195Strasz * from the PDU data segment. Note that this can get called multiple 768256195Strasz * times for one SCSI command; the cdw structure holds state for the 769256195Strasz * scatter/gather list. 770256195Strasz */ 771255570Strasz for (;;) { 772255570Strasz KASSERT(cdw->cdw_sg_index < ctl_sg_count, 773255570Strasz ("cdw->cdw_sg_index >= ctl_sg_count")); 774255570Strasz if (cdw->cdw_sg_len == 0) { 775255570Strasz cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 776255570Strasz cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 777255570Strasz } 778256195Strasz KASSERT(off <= len, ("len > off")); 779256195Strasz copy_len = len - off; 780255570Strasz if (copy_len > cdw->cdw_sg_len) 781255570Strasz copy_len = cdw->cdw_sg_len; 782255570Strasz 783255570Strasz icl_pdu_get_data(request, off, cdw->cdw_sg_addr, copy_len); 784255570Strasz cdw->cdw_sg_addr += copy_len; 785255570Strasz cdw->cdw_sg_len -= copy_len; 786255570Strasz off += copy_len; 787255570Strasz io->scsiio.ext_data_filled += copy_len; 788255570Strasz 789255570Strasz if (cdw->cdw_sg_len == 0) { 790256195Strasz /* 791256195Strasz * End of current segment. 792256195Strasz */ 793256195Strasz if (cdw->cdw_sg_index == ctl_sg_count - 1) { 794256195Strasz /* 795256195Strasz * Last segment in scatter/gather list. 796256195Strasz */ 797255570Strasz break; 798256195Strasz } 799255570Strasz cdw->cdw_sg_index++; 800255570Strasz } 801256195Strasz 802256195Strasz if (off == len) { 803256195Strasz /* 804256195Strasz * End of PDU payload. 805256195Strasz */ 806255570Strasz break; 807256195Strasz } 808255570Strasz } 809255570Strasz 810256195Strasz if (len > off) { 811265640Smav /* 812265640Smav * In case of unsolicited data, it's possible that the buffer 813265640Smav * provided by CTL is smaller than negotiated FirstBurstLength. 814265640Smav * Just ignore the superfluous data; will ask for them with R2T 815265640Smav * on next call to cfiscsi_datamove(). 816265640Smav * 817265640Smav * This obviously can only happen with SCSI Command PDU. 818265640Smav */ 819265640Smav if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 820268141Smav ISCSI_BHS_OPCODE_SCSI_COMMAND) 821265640Smav return (true); 822265640Smav 823255570Strasz CFISCSI_SESSION_WARN(cs, "received too much data: got %zd bytes, " 824265640Smav "expected %zd; dropping connection", 825265640Smav icl_pdu_data_segment_length(request), off); 826265640Smav ctl_set_data_phase_error(&io->scsiio); 827255570Strasz cfiscsi_session_terminate(cs); 828255570Strasz return (true); 829255570Strasz } 830255570Strasz 831265640Smav if (io->scsiio.ext_data_filled == io->scsiio.kern_data_len && 832265640Smav (bhsdo->bhsdo_flags & BHSDO_FLAGS_F) == 0) { 833265640Smav CFISCSI_SESSION_WARN(cs, "got the final packet without " 834265640Smav "the F flag; flags = 0x%x; dropping connection", 835265640Smav bhsdo->bhsdo_flags); 836265640Smav ctl_set_data_phase_error(&io->scsiio); 837265640Smav cfiscsi_session_terminate(cs); 838265640Smav return (true); 839265640Smav } 840265640Smav 841265640Smav if (io->scsiio.ext_data_filled != io->scsiio.kern_data_len && 842265640Smav (bhsdo->bhsdo_flags & BHSDO_FLAGS_F) != 0) { 843265640Smav if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 844265640Smav ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 845265640Smav CFISCSI_SESSION_WARN(cs, "got the final packet, but the " 846265640Smav "transmitted size was %zd bytes instead of %d; " 847265640Smav "dropping connection", 848265640Smav (size_t)io->scsiio.ext_data_filled, 849265640Smav io->scsiio.kern_data_len); 850265640Smav ctl_set_data_phase_error(&io->scsiio); 851255570Strasz cfiscsi_session_terminate(cs); 852255570Strasz return (true); 853265640Smav } else { 854265640Smav /* 855265640Smav * For SCSI Command PDU, this just means we need to 856265640Smav * solicit more data by sending R2T. 857265640Smav */ 858265640Smav return (false); 859255570Strasz } 860265640Smav } 861255570Strasz 862265640Smav if (io->scsiio.ext_data_filled == io->scsiio.kern_data_len) { 863255570Strasz#if 0 864255570Strasz CFISCSI_SESSION_DEBUG(cs, "no longer expecting Data-Out with target " 865255570Strasz "transfer tag 0x%x", cdw->cdw_target_transfer_tag); 866255570Strasz#endif 867255570Strasz 868255570Strasz return (true); 869255570Strasz } 870255570Strasz 871255570Strasz return (false); 872255570Strasz} 873255570Strasz 874255570Straszstatic void 875255570Straszcfiscsi_pdu_handle_data_out(struct icl_pdu *request) 876255570Strasz{ 877255570Strasz struct iscsi_bhs_data_out *bhsdo; 878255570Strasz struct cfiscsi_session *cs; 879255570Strasz struct cfiscsi_data_wait *cdw = NULL; 880255570Strasz union ctl_io *io; 881255570Strasz bool done; 882255570Strasz 883255570Strasz cs = PDU_SESSION(request); 884255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 885255570Strasz 886255570Strasz CFISCSI_SESSION_LOCK(cs); 887255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) { 888255570Strasz#if 0 889255570Strasz CFISCSI_SESSION_DEBUG(cs, "have ttt 0x%x, itt 0x%x; looking for " 890255570Strasz "ttt 0x%x, itt 0x%x", 891255570Strasz bhsdo->bhsdo_target_transfer_tag, 892255570Strasz bhsdo->bhsdo_initiator_task_tag, 893255570Strasz cdw->cdw_target_transfer_tag, cdw->cdw_initiator_task_tag)); 894255570Strasz#endif 895255570Strasz if (bhsdo->bhsdo_target_transfer_tag == 896255570Strasz cdw->cdw_target_transfer_tag) 897255570Strasz break; 898255570Strasz } 899255570Strasz CFISCSI_SESSION_UNLOCK(cs); 900255570Strasz if (cdw == NULL) { 901255570Strasz CFISCSI_SESSION_WARN(cs, "data transfer tag 0x%x, initiator task tag " 902256197Strasz "0x%x, not found; dropping connection", 903256197Strasz bhsdo->bhsdo_target_transfer_tag, bhsdo->bhsdo_initiator_task_tag); 904255570Strasz icl_pdu_free(request); 905255570Strasz cfiscsi_session_terminate(cs); 906255570Strasz return; 907255570Strasz } 908255570Strasz 909255570Strasz io = cdw->cdw_ctl_io; 910255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 911255570Strasz ("CTL_FLAG_DATA_IN")); 912255570Strasz 913255570Strasz done = cfiscsi_handle_data_segment(request, cdw); 914255570Strasz if (done) { 915255570Strasz CFISCSI_SESSION_LOCK(cs); 916255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 917255570Strasz CFISCSI_SESSION_UNLOCK(cs); 918255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 919255570Strasz io->scsiio.be_move_done(io); 920255570Strasz } 921255570Strasz 922255570Strasz icl_pdu_free(request); 923255570Strasz} 924255570Strasz 925255570Straszstatic void 926255570Straszcfiscsi_pdu_handle_logout_request(struct icl_pdu *request) 927255570Strasz{ 928255570Strasz struct iscsi_bhs_logout_request *bhslr; 929255570Strasz struct iscsi_bhs_logout_response *bhslr2; 930255570Strasz struct icl_pdu *response; 931255570Strasz struct cfiscsi_session *cs; 932255570Strasz 933255570Strasz cs = PDU_SESSION(request); 934255570Strasz bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 935255570Strasz switch (bhslr->bhslr_reason & 0x7f) { 936255570Strasz case BHSLR_REASON_CLOSE_SESSION: 937255570Strasz case BHSLR_REASON_CLOSE_CONNECTION: 938255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 939255570Strasz if (response == NULL) { 940256197Strasz CFISCSI_SESSION_DEBUG(cs, "failed to allocate memory"); 941255570Strasz icl_pdu_free(request); 942255570Strasz cfiscsi_session_terminate(cs); 943255570Strasz return; 944255570Strasz } 945255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 946255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 947255570Strasz bhslr2->bhslr_flags = 0x80; 948255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_CLOSED_SUCCESSFULLY; 949255570Strasz bhslr2->bhslr_initiator_task_tag = 950255570Strasz bhslr->bhslr_initiator_task_tag; 951255570Strasz icl_pdu_free(request); 952255570Strasz cfiscsi_pdu_queue(response); 953255570Strasz cfiscsi_session_terminate(cs); 954255570Strasz break; 955255570Strasz case BHSLR_REASON_REMOVE_FOR_RECOVERY: 956255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 957255570Strasz if (response == NULL) { 958256197Strasz CFISCSI_SESSION_WARN(cs, 959256197Strasz "failed to allocate memory; dropping connection"); 960255570Strasz icl_pdu_free(request); 961255570Strasz cfiscsi_session_terminate(cs); 962255570Strasz return; 963255570Strasz } 964255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 965255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 966255570Strasz bhslr2->bhslr_flags = 0x80; 967255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_RECOVERY_NOT_SUPPORTED; 968255570Strasz bhslr2->bhslr_initiator_task_tag = 969255570Strasz bhslr->bhslr_initiator_task_tag; 970255570Strasz icl_pdu_free(request); 971255570Strasz cfiscsi_pdu_queue(response); 972255570Strasz break; 973255570Strasz default: 974255570Strasz CFISCSI_SESSION_WARN(cs, "invalid reason 0%x; dropping connection", 975255570Strasz bhslr->bhslr_reason); 976255570Strasz icl_pdu_free(request); 977255570Strasz cfiscsi_session_terminate(cs); 978255570Strasz break; 979255570Strasz } 980255570Strasz} 981255570Strasz 982255570Straszstatic void 983255570Straszcfiscsi_callout(void *context) 984255570Strasz{ 985255570Strasz struct icl_pdu *cp; 986255570Strasz struct iscsi_bhs_nop_in *bhsni; 987255570Strasz struct cfiscsi_session *cs; 988255570Strasz 989255570Strasz cs = context; 990255570Strasz 991255570Strasz if (cs->cs_terminating) 992255570Strasz return; 993255570Strasz 994255570Strasz callout_schedule(&cs->cs_callout, 1 * hz); 995255570Strasz 996265497Strasz atomic_add_int(&cs->cs_timeout, 1); 997255570Strasz 998255570Strasz#ifdef ICL_KERNEL_PROXY 999255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 1000255570Strasz if (cs->cs_timeout > login_timeout) { 1001255570Strasz CFISCSI_SESSION_WARN(cs, "login timed out after " 1002255570Strasz "%d seconds; dropping connection", cs->cs_timeout); 1003255570Strasz cfiscsi_session_terminate(cs); 1004255570Strasz } 1005255570Strasz return; 1006255570Strasz } 1007255570Strasz#endif 1008255570Strasz 1009271618Strasz if (ping_timeout <= 0) { 1010271618Strasz /* 1011271618Strasz * Pings are disabled. Don't send NOP-In in this case; 1012271618Strasz * user might have disabled pings to work around problems 1013271618Strasz * with certain initiators that can't properly handle 1014271618Strasz * NOP-In, such as iPXE. Reset the timeout, to avoid 1015271618Strasz * triggering reconnection, should the user decide to 1016271618Strasz * reenable them. 1017271618Strasz */ 1018271618Strasz cs->cs_timeout = 0; 1019271618Strasz return; 1020271618Strasz } 1021271618Strasz 1022255570Strasz if (cs->cs_timeout >= ping_timeout) { 1023255570Strasz CFISCSI_SESSION_WARN(cs, "no ping reply (NOP-Out) after %d seconds; " 1024255570Strasz "dropping connection", ping_timeout); 1025255570Strasz cfiscsi_session_terminate(cs); 1026255570Strasz return; 1027255570Strasz } 1028255570Strasz 1029255570Strasz /* 1030255570Strasz * If the ping was reset less than one second ago - which means 1031255570Strasz * that we've received some PDU during the last second - assume 1032255570Strasz * the traffic flows correctly and don't bother sending a NOP-Out. 1033255570Strasz * 1034255570Strasz * (It's 2 - one for one second, and one for incrementing is_timeout 1035255570Strasz * earlier in this routine.) 1036255570Strasz */ 1037255570Strasz if (cs->cs_timeout < 2) 1038255570Strasz return; 1039255570Strasz 1040255824Strasz cp = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1041255824Strasz if (cp == NULL) { 1042256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory"); 1043255824Strasz return; 1044255824Strasz } 1045255570Strasz bhsni = (struct iscsi_bhs_nop_in *)cp->ip_bhs; 1046255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 1047255570Strasz bhsni->bhsni_flags = 0x80; 1048255570Strasz bhsni->bhsni_initiator_task_tag = 0xffffffff; 1049255570Strasz 1050255570Strasz cfiscsi_pdu_queue(cp); 1051255570Strasz} 1052255570Strasz 1053255570Straszstatic void 1054255570Straszcfiscsi_session_terminate_tasks(struct cfiscsi_session *cs) 1055255570Strasz{ 1056268690Smav struct cfiscsi_data_wait *cdw; 1057255570Strasz union ctl_io *io; 1058268259Smav int error, last; 1059255570Strasz 1060268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 1061255570Strasz if (io == NULL) { 1062255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 1063255570Strasz return; 1064255570Strasz } 1065255570Strasz ctl_zero_io(io); 1066268690Smav io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = cs; 1067255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1068255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1069268682Smav io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 1070255570Strasz io->io_hdr.nexus.targ_target.id = 0; 1071268690Smav io->io_hdr.nexus.targ_lun = 0; 1072255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1073268690Smav io->taskio.task_action = CTL_TASK_I_T_NEXUS_RESET; 1074268690Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1075255570Strasz error = ctl_queue(io); 1076255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1077255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1078268690Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 1079255570Strasz ctl_free_io(io); 1080255570Strasz } 1081268690Smav 1082255570Strasz CFISCSI_SESSION_LOCK(cs); 1083268690Smav while ((cdw = TAILQ_FIRST(&cs->cs_waiting_for_data_out)) != NULL) { 1084268690Smav TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 1085268690Smav CFISCSI_SESSION_UNLOCK(cs); 1086268259Smav /* 1087268259Smav * Set nonzero port status; this prevents backends from 1088268259Smav * assuming that the data transfer actually succeeded 1089268259Smav * and writing uninitialized data to disk. 1090268259Smav */ 1091268259Smav cdw->cdw_ctl_io->scsiio.io_hdr.port_status = 42; 1092255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 1093255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 1094268690Smav CFISCSI_SESSION_LOCK(cs); 1095255570Strasz } 1096255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1097268259Smav 1098268259Smav /* 1099268259Smav * Wait for CTL to terminate all the tasks. 1100268259Smav */ 1101268259Smav for (;;) { 1102268259Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1103268259Smav last = refcount_release(&cs->cs_outstanding_ctl_pdus); 1104268259Smav if (last != 0) 1105268259Smav break; 1106268259Smav CFISCSI_SESSION_WARN(cs, "waiting for CTL to terminate tasks, " 1107268259Smav "%d remaining", cs->cs_outstanding_ctl_pdus); 1108268691Smav tsleep(__DEVOLATILE(void *, &cs->cs_outstanding_ctl_pdus), 1109268691Smav 0, "cfiscsi_terminate", hz / 100); 1110268259Smav } 1111255570Strasz} 1112255570Strasz 1113255570Straszstatic void 1114255570Straszcfiscsi_maintenance_thread(void *arg) 1115255570Strasz{ 1116255570Strasz struct cfiscsi_session *cs; 1117255570Strasz 1118255570Strasz cs = arg; 1119255570Strasz 1120255570Strasz for (;;) { 1121255570Strasz CFISCSI_SESSION_LOCK(cs); 1122255570Strasz if (cs->cs_terminating == false) 1123255570Strasz cv_wait(&cs->cs_maintenance_cv, &cs->cs_lock); 1124255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1125255570Strasz 1126255570Strasz if (cs->cs_terminating) { 1127268259Smav 1128268259Smav /* 1129268259Smav * We used to wait up to 30 seconds to deliver queued 1130268259Smav * PDUs to the initiator. We also tried hard to deliver 1131268259Smav * SCSI Responses for the aborted PDUs. We don't do 1132268259Smav * that anymore. We might need to revisit that. 1133268259Smav */ 1134255570Strasz callout_drain(&cs->cs_callout); 1135255570Strasz icl_conn_shutdown(cs->cs_conn); 1136255570Strasz icl_conn_close(cs->cs_conn); 1137255570Strasz 1138255570Strasz /* 1139268259Smav * At this point ICL receive thread is no longer 1140268259Smav * running; no new tasks can be queued. 1141255570Strasz */ 1142268259Smav cfiscsi_session_terminate_tasks(cs); 1143255570Strasz cfiscsi_session_delete(cs); 1144255570Strasz kthread_exit(); 1145255570Strasz return; 1146255570Strasz } 1147255570Strasz CFISCSI_SESSION_DEBUG(cs, "nothing to do"); 1148255570Strasz } 1149255570Strasz} 1150255570Strasz 1151255570Straszstatic void 1152255570Straszcfiscsi_session_terminate(struct cfiscsi_session *cs) 1153255570Strasz{ 1154255570Strasz 1155268258Smav if (cs->cs_terminating) 1156255570Strasz return; 1157268258Smav cs->cs_terminating = true; 1158255570Strasz cv_signal(&cs->cs_maintenance_cv); 1159265510Strasz#ifdef ICL_KERNEL_PROXY 1160265510Strasz cv_signal(&cs->cs_login_cv); 1161265510Strasz#endif 1162255570Strasz} 1163255570Strasz 1164255570Straszstatic int 1165255570Straszcfiscsi_session_register_initiator(struct cfiscsi_session *cs) 1166255570Strasz{ 1167268692Smav struct cfiscsi_target *ct; 1168268692Smav char *name; 1169268692Smav int i; 1170255570Strasz 1171255570Strasz KASSERT(cs->cs_ctl_initid == -1, ("already registered")); 1172255570Strasz 1173268692Smav ct = cs->cs_target; 1174268692Smav name = strdup(cs->cs_initiator_id, M_CTL); 1175268692Smav i = ctl_add_initiator(&ct->ct_port, -1, 0, name); 1176268692Smav if (i < 0) { 1177268692Smav CFISCSI_SESSION_WARN(cs, "ctl_add_initiator failed with error %d", 1178268692Smav i); 1179268692Smav cs->cs_ctl_initid = -1; 1180255570Strasz return (1); 1181255570Strasz } 1182268692Smav cs->cs_ctl_initid = i; 1183255570Strasz#if 0 1184268692Smav CFISCSI_SESSION_DEBUG(cs, "added initiator id %d", i); 1185255570Strasz#endif 1186255570Strasz 1187255570Strasz return (0); 1188255570Strasz} 1189255570Strasz 1190255570Straszstatic void 1191255570Straszcfiscsi_session_unregister_initiator(struct cfiscsi_session *cs) 1192255570Strasz{ 1193255570Strasz int error; 1194255570Strasz 1195255570Strasz if (cs->cs_ctl_initid == -1) 1196255570Strasz return; 1197255570Strasz 1198268692Smav error = ctl_remove_initiator(&cs->cs_target->ct_port, cs->cs_ctl_initid); 1199255570Strasz if (error != 0) { 1200255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_remove_initiator failed with error %d", 1201255570Strasz error); 1202255570Strasz } 1203255570Strasz cs->cs_ctl_initid = -1; 1204255570Strasz} 1205255570Strasz 1206255570Straszstatic struct cfiscsi_session * 1207255570Straszcfiscsi_session_new(struct cfiscsi_softc *softc) 1208255570Strasz{ 1209255570Strasz struct cfiscsi_session *cs; 1210255570Strasz int error; 1211255570Strasz 1212255570Strasz cs = malloc(sizeof(*cs), M_CFISCSI, M_NOWAIT | M_ZERO); 1213255570Strasz if (cs == NULL) { 1214255570Strasz CFISCSI_WARN("malloc failed"); 1215255570Strasz return (NULL); 1216255570Strasz } 1217255570Strasz cs->cs_ctl_initid = -1; 1218255570Strasz 1219255570Strasz refcount_init(&cs->cs_outstanding_ctl_pdus, 0); 1220255570Strasz TAILQ_INIT(&cs->cs_waiting_for_data_out); 1221255570Strasz mtx_init(&cs->cs_lock, "cfiscsi_lock", NULL, MTX_DEF); 1222255570Strasz cv_init(&cs->cs_maintenance_cv, "cfiscsi_mt"); 1223255570Strasz#ifdef ICL_KERNEL_PROXY 1224255570Strasz cv_init(&cs->cs_login_cv, "cfiscsi_login"); 1225255570Strasz#endif 1226255570Strasz 1227265496Strasz cs->cs_conn = icl_conn_new("cfiscsi", &cs->cs_lock); 1228255570Strasz cs->cs_conn->ic_receive = cfiscsi_receive_callback; 1229255570Strasz cs->cs_conn->ic_error = cfiscsi_error_callback; 1230255570Strasz cs->cs_conn->ic_prv0 = cs; 1231255570Strasz 1232255570Strasz error = kthread_add(cfiscsi_maintenance_thread, cs, NULL, NULL, 0, 0, "cfiscsimt"); 1233255570Strasz if (error != 0) { 1234255570Strasz CFISCSI_SESSION_WARN(cs, "kthread_add(9) failed with error %d", error); 1235255570Strasz free(cs, M_CFISCSI); 1236255570Strasz return (NULL); 1237255570Strasz } 1238255570Strasz 1239255570Strasz mtx_lock(&softc->lock); 1240255570Strasz cs->cs_id = softc->last_session_id + 1; 1241255570Strasz softc->last_session_id++; 1242255570Strasz mtx_unlock(&softc->lock); 1243255570Strasz 1244255570Strasz mtx_lock(&softc->lock); 1245255570Strasz TAILQ_INSERT_TAIL(&softc->sessions, cs, cs_next); 1246255570Strasz mtx_unlock(&softc->lock); 1247255570Strasz 1248255570Strasz /* 1249255570Strasz * Start pinging the initiator. 1250255570Strasz */ 1251255570Strasz callout_init(&cs->cs_callout, 1); 1252255570Strasz callout_reset(&cs->cs_callout, 1 * hz, cfiscsi_callout, cs); 1253255570Strasz 1254255570Strasz return (cs); 1255255570Strasz} 1256255570Strasz 1257255570Straszstatic void 1258255570Straszcfiscsi_session_delete(struct cfiscsi_session *cs) 1259255570Strasz{ 1260255570Strasz struct cfiscsi_softc *softc; 1261255570Strasz 1262255570Strasz softc = &cfiscsi_softc; 1263255570Strasz 1264255570Strasz KASSERT(cs->cs_outstanding_ctl_pdus == 0, 1265255570Strasz ("destroying session with outstanding CTL pdus")); 1266255570Strasz KASSERT(TAILQ_EMPTY(&cs->cs_waiting_for_data_out), 1267255570Strasz ("destroying session with non-empty queue")); 1268255570Strasz 1269255570Strasz cfiscsi_session_unregister_initiator(cs); 1270255570Strasz if (cs->cs_target != NULL) 1271255570Strasz cfiscsi_target_release(cs->cs_target); 1272255570Strasz icl_conn_close(cs->cs_conn); 1273255570Strasz icl_conn_free(cs->cs_conn); 1274255570Strasz 1275255570Strasz mtx_lock(&softc->lock); 1276255570Strasz TAILQ_REMOVE(&softc->sessions, cs, cs_next); 1277255570Strasz mtx_unlock(&softc->lock); 1278255570Strasz 1279255570Strasz free(cs, M_CFISCSI); 1280255570Strasz} 1281255570Strasz 1282255570Straszint 1283255570Straszcfiscsi_init(void) 1284255570Strasz{ 1285255570Strasz struct cfiscsi_softc *softc; 1286255570Strasz int retval; 1287255570Strasz 1288255570Strasz softc = &cfiscsi_softc; 1289255570Strasz retval = 0; 1290255570Strasz bzero(softc, sizeof(*softc)); 1291255570Strasz mtx_init(&softc->lock, "cfiscsi", NULL, MTX_DEF); 1292255570Strasz 1293255570Strasz#ifdef ICL_KERNEL_PROXY 1294255570Strasz cv_init(&softc->accept_cv, "cfiscsi_accept"); 1295255570Strasz#endif 1296255570Strasz TAILQ_INIT(&softc->sessions); 1297255570Strasz TAILQ_INIT(&softc->targets); 1298255570Strasz 1299255570Strasz cfiscsi_data_wait_zone = uma_zcreate("cfiscsi_data_wait", 1300255570Strasz sizeof(struct cfiscsi_data_wait), NULL, NULL, NULL, NULL, 1301256058Strasz UMA_ALIGN_PTR, 0); 1302255570Strasz 1303255570Strasz return (0); 1304255570Strasz} 1305255570Strasz 1306255570Strasz#ifdef ICL_KERNEL_PROXY 1307255570Straszstatic void 1308265513Straszcfiscsi_accept(struct socket *so, struct sockaddr *sa, int portal_id) 1309255570Strasz{ 1310255570Strasz struct cfiscsi_session *cs; 1311255570Strasz 1312255570Strasz cs = cfiscsi_session_new(&cfiscsi_softc); 1313255570Strasz if (cs == NULL) { 1314255570Strasz CFISCSI_WARN("failed to create session"); 1315255570Strasz return; 1316255570Strasz } 1317255570Strasz 1318255570Strasz icl_conn_handoff_sock(cs->cs_conn, so); 1319265513Strasz cs->cs_initiator_sa = sa; 1320265509Strasz cs->cs_portal_id = portal_id; 1321255570Strasz cs->cs_waiting_for_ctld = true; 1322255570Strasz cv_signal(&cfiscsi_softc.accept_cv); 1323255570Strasz} 1324255570Strasz#endif 1325255570Strasz 1326255570Straszstatic void 1327255570Straszcfiscsi_online(void *arg) 1328255570Strasz{ 1329255570Strasz struct cfiscsi_softc *softc; 1330268682Smav struct cfiscsi_target *ct; 1331268682Smav int online; 1332255570Strasz 1333268682Smav ct = (struct cfiscsi_target *)arg; 1334268682Smav softc = ct->ct_softc; 1335255570Strasz 1336268682Smav mtx_lock(&softc->lock); 1337268682Smav if (ct->ct_online) { 1338268682Smav mtx_unlock(&softc->lock); 1339268682Smav return; 1340268682Smav } 1341268682Smav ct->ct_online = 1; 1342268682Smav online = softc->online++; 1343268682Smav mtx_unlock(&softc->lock); 1344268682Smav if (online > 0) 1345268682Smav return; 1346268682Smav 1347255570Strasz#ifdef ICL_KERNEL_PROXY 1348255570Strasz if (softc->listener != NULL) 1349255570Strasz icl_listen_free(softc->listener); 1350255570Strasz softc->listener = icl_listen_new(cfiscsi_accept); 1351255570Strasz#endif 1352255570Strasz} 1353255570Strasz 1354255570Straszstatic void 1355255570Straszcfiscsi_offline(void *arg) 1356255570Strasz{ 1357255570Strasz struct cfiscsi_softc *softc; 1358268682Smav struct cfiscsi_target *ct; 1359255570Strasz struct cfiscsi_session *cs; 1360268682Smav int online; 1361255570Strasz 1362268682Smav ct = (struct cfiscsi_target *)arg; 1363268682Smav softc = ct->ct_softc; 1364255570Strasz 1365268682Smav mtx_lock(&softc->lock); 1366268682Smav if (!ct->ct_online) { 1367268682Smav mtx_unlock(&softc->lock); 1368268682Smav return; 1369268682Smav } 1370268682Smav ct->ct_online = 0; 1371268682Smav online = --softc->online; 1372255570Strasz 1373268682Smav TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1374268682Smav if (cs->cs_target == ct) 1375268682Smav cfiscsi_session_terminate(cs); 1376268682Smav } 1377255570Strasz mtx_unlock(&softc->lock); 1378268682Smav if (online > 0) 1379268682Smav return; 1380255570Strasz 1381255570Strasz#ifdef ICL_KERNEL_PROXY 1382255570Strasz icl_listen_free(softc->listener); 1383255570Strasz softc->listener = NULL; 1384255570Strasz#endif 1385255570Strasz} 1386255570Strasz 1387268688Smavstatic int 1388268688Smavcfiscsi_info(void *arg, struct sbuf *sb) 1389268688Smav{ 1390268688Smav struct cfiscsi_target *ct = (struct cfiscsi_target *)arg; 1391268688Smav int retval; 1392268688Smav 1393268688Smav retval = sbuf_printf(sb, "\t<cfiscsi_state>%d</cfiscsi_state>\n", 1394268688Smav ct->ct_state); 1395268688Smav return (retval); 1396268688Smav} 1397268688Smav 1398255570Straszstatic void 1399255570Straszcfiscsi_ioctl_handoff(struct ctl_iscsi *ci) 1400255570Strasz{ 1401255570Strasz struct cfiscsi_softc *softc; 1402268691Smav struct cfiscsi_session *cs, *cs2; 1403255570Strasz struct cfiscsi_target *ct; 1404255570Strasz struct ctl_iscsi_handoff_params *cihp; 1405255570Strasz int error; 1406255570Strasz 1407255570Strasz cihp = (struct ctl_iscsi_handoff_params *)&(ci->data); 1408255570Strasz softc = &cfiscsi_softc; 1409255570Strasz 1410255570Strasz CFISCSI_DEBUG("new connection from %s (%s) to %s", 1411255570Strasz cihp->initiator_name, cihp->initiator_addr, 1412255570Strasz cihp->target_name); 1413255570Strasz 1414268682Smav ct = cfiscsi_target_find(softc, cihp->target_name); 1415268682Smav if (ct == NULL) { 1416255570Strasz ci->status = CTL_ISCSI_ERROR; 1417255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1418268682Smav "%s: target not found", __func__); 1419255570Strasz return; 1420255570Strasz } 1421255570Strasz 1422268682Smav if (ct->ct_online == 0) { 1423255570Strasz ci->status = CTL_ISCSI_ERROR; 1424255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1425268682Smav "%s: port offline", __func__); 1426268682Smav cfiscsi_target_release(ct); 1427255570Strasz return; 1428255570Strasz } 1429255570Strasz 1430255570Strasz#ifdef ICL_KERNEL_PROXY 1431265507Strasz if (cihp->socket > 0 && cihp->connection_id > 0) { 1432265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1433265507Strasz "both socket and connection_id set"); 1434255570Strasz ci->status = CTL_ISCSI_ERROR; 1435264523Smav cfiscsi_target_release(ct); 1436255570Strasz return; 1437255570Strasz } 1438265507Strasz if (cihp->socket == 0) { 1439265507Strasz mtx_lock(&cfiscsi_softc.lock); 1440265507Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1441265507Strasz if (cs->cs_id == cihp->socket) 1442265507Strasz break; 1443265507Strasz } 1444265507Strasz if (cs == NULL) { 1445265507Strasz mtx_unlock(&cfiscsi_softc.lock); 1446265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1447265507Strasz "connection not found"); 1448265507Strasz ci->status = CTL_ISCSI_ERROR; 1449265507Strasz cfiscsi_target_release(ct); 1450265507Strasz return; 1451265507Strasz } 1452265507Strasz mtx_unlock(&cfiscsi_softc.lock); 1453265507Strasz } else { 1454265507Strasz#endif 1455265507Strasz cs = cfiscsi_session_new(softc); 1456265507Strasz if (cs == NULL) { 1457265507Strasz ci->status = CTL_ISCSI_ERROR; 1458265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1459265507Strasz "%s: cfiscsi_session_new failed", __func__); 1460265507Strasz cfiscsi_target_release(ct); 1461265507Strasz return; 1462265507Strasz } 1463265507Strasz#ifdef ICL_KERNEL_PROXY 1464255570Strasz } 1465255570Strasz#endif 1466255570Strasz cs->cs_target = ct; 1467255570Strasz 1468255570Strasz /* 1469255570Strasz * First PDU of Full Feature phase has the same CmdSN as the last 1470255570Strasz * PDU from the Login Phase received from the initiator. Thus, 1471255570Strasz * the -1 below. 1472255570Strasz */ 1473255570Strasz cs->cs_portal_group_tag = cihp->portal_group_tag; 1474255570Strasz cs->cs_cmdsn = cihp->cmdsn; 1475255570Strasz cs->cs_statsn = cihp->statsn; 1476255570Strasz cs->cs_max_data_segment_length = cihp->max_recv_data_segment_length; 1477255570Strasz cs->cs_max_burst_length = cihp->max_burst_length; 1478255570Strasz cs->cs_immediate_data = !!cihp->immediate_data; 1479255570Strasz if (cihp->header_digest == CTL_ISCSI_DIGEST_CRC32C) 1480255570Strasz cs->cs_conn->ic_header_crc32c = true; 1481255570Strasz if (cihp->data_digest == CTL_ISCSI_DIGEST_CRC32C) 1482255570Strasz cs->cs_conn->ic_data_crc32c = true; 1483255570Strasz 1484255570Strasz strlcpy(cs->cs_initiator_name, 1485255570Strasz cihp->initiator_name, sizeof(cs->cs_initiator_name)); 1486255570Strasz strlcpy(cs->cs_initiator_addr, 1487255570Strasz cihp->initiator_addr, sizeof(cs->cs_initiator_addr)); 1488255570Strasz strlcpy(cs->cs_initiator_alias, 1489255570Strasz cihp->initiator_alias, sizeof(cs->cs_initiator_alias)); 1490268684Smav memcpy(cs->cs_initiator_isid, 1491268684Smav cihp->initiator_isid, sizeof(cs->cs_initiator_isid)); 1492268684Smav snprintf(cs->cs_initiator_id, sizeof(cs->cs_initiator_id), 1493268684Smav "%s,i,0x%02x%02x%02x%02x%02x%02x", cs->cs_initiator_name, 1494268684Smav cihp->initiator_isid[0], cihp->initiator_isid[1], 1495268684Smav cihp->initiator_isid[2], cihp->initiator_isid[3], 1496268684Smav cihp->initiator_isid[4], cihp->initiator_isid[5]); 1497255570Strasz 1498268691Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1499268691Smavrestart: 1500268691Smav if (!cs->cs_terminating) { 1501268691Smav mtx_lock(&softc->lock); 1502268691Smav TAILQ_FOREACH(cs2, &softc->sessions, cs_next) { 1503268691Smav if (cs2 != cs && cs2->cs_tasks_aborted == false && 1504268691Smav cs->cs_target == cs2->cs_target && 1505268691Smav cs->cs_portal_group_tag == cs2->cs_portal_group_tag && 1506268691Smav strcmp(cs->cs_initiator_id, cs2->cs_initiator_id) == 0) { 1507268691Smav cfiscsi_session_terminate(cs2); 1508268691Smav mtx_unlock(&softc->lock); 1509268691Smav pause("cfiscsi_reinstate", 1); 1510268691Smav goto restart; 1511268691Smav } 1512268691Smav } 1513268691Smav mtx_unlock(&softc->lock); 1514268691Smav } 1515268691Smav 1516268691Smav /* 1517268691Smav * Register initiator with CTL. 1518268691Smav */ 1519268691Smav cfiscsi_session_register_initiator(cs); 1520268691Smav 1521255570Strasz#ifdef ICL_KERNEL_PROXY 1522265507Strasz if (cihp->socket > 0) { 1523265507Strasz#endif 1524265507Strasz error = icl_conn_handoff(cs->cs_conn, cihp->socket); 1525265507Strasz if (error != 0) { 1526268691Smav cfiscsi_session_terminate(cs); 1527268691Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 1528265507Strasz ci->status = CTL_ISCSI_ERROR; 1529265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1530265507Strasz "%s: icl_conn_handoff failed with error %d", 1531265507Strasz __func__, error); 1532265507Strasz return; 1533265507Strasz } 1534265507Strasz#ifdef ICL_KERNEL_PROXY 1535255570Strasz } 1536255570Strasz#endif 1537255570Strasz 1538255570Strasz#ifdef ICL_KERNEL_PROXY 1539265507Strasz cs->cs_login_phase = false; 1540265507Strasz 1541255570Strasz /* 1542255570Strasz * First PDU of the Full Feature phase has likely already arrived. 1543255570Strasz * We have to pick it up and execute properly. 1544255570Strasz */ 1545255570Strasz if (cs->cs_login_pdu != NULL) { 1546255570Strasz CFISCSI_SESSION_DEBUG(cs, "picking up first PDU"); 1547255570Strasz cfiscsi_pdu_handle(cs->cs_login_pdu); 1548255570Strasz cs->cs_login_pdu = NULL; 1549255570Strasz } 1550255570Strasz#endif 1551255570Strasz 1552268691Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 1553255570Strasz ci->status = CTL_ISCSI_OK; 1554255570Strasz} 1555255570Strasz 1556255570Straszstatic void 1557255570Straszcfiscsi_ioctl_list(struct ctl_iscsi *ci) 1558255570Strasz{ 1559255570Strasz struct ctl_iscsi_list_params *cilp; 1560255570Strasz struct cfiscsi_session *cs; 1561255570Strasz struct cfiscsi_softc *softc; 1562255570Strasz struct sbuf *sb; 1563255570Strasz int error; 1564255570Strasz 1565255570Strasz cilp = (struct ctl_iscsi_list_params *)&(ci->data); 1566255570Strasz softc = &cfiscsi_softc; 1567255570Strasz 1568255570Strasz sb = sbuf_new(NULL, NULL, cilp->alloc_len, SBUF_FIXEDLEN); 1569255570Strasz if (sb == NULL) { 1570255570Strasz ci->status = CTL_ISCSI_ERROR; 1571255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1572255570Strasz "Unable to allocate %d bytes for iSCSI session list", 1573255570Strasz cilp->alloc_len); 1574255570Strasz return; 1575255570Strasz } 1576255570Strasz 1577255570Strasz sbuf_printf(sb, "<ctlislist>\n"); 1578255570Strasz mtx_lock(&softc->lock); 1579255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1580255570Strasz#ifdef ICL_KERNEL_PROXY 1581255570Strasz if (cs->cs_target == NULL) 1582255570Strasz continue; 1583255570Strasz#endif 1584255570Strasz error = sbuf_printf(sb, "<connection id=\"%d\">" 1585255570Strasz "<initiator>%s</initiator>" 1586255570Strasz "<initiator_addr>%s</initiator_addr>" 1587255570Strasz "<initiator_alias>%s</initiator_alias>" 1588255570Strasz "<target>%s</target>" 1589255570Strasz "<target_alias>%s</target_alias>" 1590255570Strasz "<header_digest>%s</header_digest>" 1591255570Strasz "<data_digest>%s</data_digest>" 1592255570Strasz "<max_data_segment_length>%zd</max_data_segment_length>" 1593255570Strasz "<immediate_data>%d</immediate_data>" 1594255570Strasz "<iser>%d</iser>" 1595255570Strasz "</connection>\n", 1596255570Strasz cs->cs_id, 1597255570Strasz cs->cs_initiator_name, cs->cs_initiator_addr, cs->cs_initiator_alias, 1598255570Strasz cs->cs_target->ct_name, cs->cs_target->ct_alias, 1599255570Strasz cs->cs_conn->ic_header_crc32c ? "CRC32C" : "None", 1600255570Strasz cs->cs_conn->ic_data_crc32c ? "CRC32C" : "None", 1601255570Strasz cs->cs_max_data_segment_length, 1602255570Strasz cs->cs_immediate_data, 1603255570Strasz cs->cs_conn->ic_iser); 1604255570Strasz if (error != 0) 1605255570Strasz break; 1606255570Strasz } 1607255570Strasz mtx_unlock(&softc->lock); 1608255570Strasz error = sbuf_printf(sb, "</ctlislist>\n"); 1609255570Strasz if (error != 0) { 1610255570Strasz sbuf_delete(sb); 1611255570Strasz ci->status = CTL_ISCSI_LIST_NEED_MORE_SPACE; 1612255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1613255570Strasz "Out of space, %d bytes is too small", cilp->alloc_len); 1614255570Strasz return; 1615255570Strasz } 1616255570Strasz sbuf_finish(sb); 1617255570Strasz 1618255570Strasz error = copyout(sbuf_data(sb), cilp->conn_xml, sbuf_len(sb) + 1); 1619255570Strasz cilp->fill_len = sbuf_len(sb) + 1; 1620255570Strasz ci->status = CTL_ISCSI_OK; 1621255570Strasz sbuf_delete(sb); 1622255570Strasz} 1623255570Strasz 1624255570Straszstatic void 1625255570Straszcfiscsi_ioctl_terminate(struct ctl_iscsi *ci) 1626255570Strasz{ 1627255570Strasz struct icl_pdu *response; 1628255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1629255570Strasz struct ctl_iscsi_terminate_params *citp; 1630255570Strasz struct cfiscsi_session *cs; 1631255570Strasz struct cfiscsi_softc *softc; 1632255570Strasz int found = 0; 1633255570Strasz 1634255570Strasz citp = (struct ctl_iscsi_terminate_params *)&(ci->data); 1635255570Strasz softc = &cfiscsi_softc; 1636255570Strasz 1637255570Strasz mtx_lock(&softc->lock); 1638255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1639255570Strasz if (citp->all == 0 && cs->cs_id != citp->connection_id && 1640255570Strasz strcmp(cs->cs_initiator_name, citp->initiator_name) != 0 && 1641255570Strasz strcmp(cs->cs_initiator_addr, citp->initiator_addr) != 0) 1642255570Strasz continue; 1643255570Strasz 1644255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1645255570Strasz if (response == NULL) { 1646255570Strasz /* 1647255570Strasz * Oh well. Just terminate the connection. 1648255570Strasz */ 1649255570Strasz } else { 1650255570Strasz bhsam = (struct iscsi_bhs_asynchronous_message *) 1651255570Strasz response->ip_bhs; 1652255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1653255570Strasz bhsam->bhsam_flags = 0x80; 1654255570Strasz bhsam->bhsam_0xffffffff = 0xffffffff; 1655255570Strasz bhsam->bhsam_async_event = 1656255570Strasz BHSAM_EVENT_TARGET_TERMINATES_SESSION; 1657255570Strasz cfiscsi_pdu_queue(response); 1658255570Strasz } 1659255570Strasz cfiscsi_session_terminate(cs); 1660255570Strasz found++; 1661255570Strasz } 1662255570Strasz mtx_unlock(&softc->lock); 1663255570Strasz 1664255570Strasz if (found == 0) { 1665255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1666255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1667255570Strasz "No matching connections found"); 1668255570Strasz return; 1669255570Strasz } 1670255570Strasz 1671255570Strasz ci->status = CTL_ISCSI_OK; 1672255570Strasz} 1673255570Strasz 1674255570Straszstatic void 1675255570Straszcfiscsi_ioctl_logout(struct ctl_iscsi *ci) 1676255570Strasz{ 1677255570Strasz struct icl_pdu *response; 1678255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1679255570Strasz struct ctl_iscsi_logout_params *cilp; 1680255570Strasz struct cfiscsi_session *cs; 1681255570Strasz struct cfiscsi_softc *softc; 1682255570Strasz int found = 0; 1683255570Strasz 1684255570Strasz cilp = (struct ctl_iscsi_logout_params *)&(ci->data); 1685255570Strasz softc = &cfiscsi_softc; 1686255570Strasz 1687255570Strasz mtx_lock(&softc->lock); 1688255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1689255570Strasz if (cilp->all == 0 && cs->cs_id != cilp->connection_id && 1690255570Strasz strcmp(cs->cs_initiator_name, cilp->initiator_name) != 0 && 1691255570Strasz strcmp(cs->cs_initiator_addr, cilp->initiator_addr) != 0) 1692255570Strasz continue; 1693255570Strasz 1694255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1695255570Strasz if (response == NULL) { 1696255570Strasz ci->status = CTL_ISCSI_ERROR; 1697255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1698255570Strasz "Unable to allocate memory"); 1699255570Strasz mtx_unlock(&softc->lock); 1700255570Strasz return; 1701255570Strasz } 1702255570Strasz bhsam = 1703255570Strasz (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1704255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1705255570Strasz bhsam->bhsam_flags = 0x80; 1706255570Strasz bhsam->bhsam_async_event = BHSAM_EVENT_TARGET_REQUESTS_LOGOUT; 1707255570Strasz bhsam->bhsam_parameter3 = htons(10); 1708255570Strasz cfiscsi_pdu_queue(response); 1709255570Strasz found++; 1710255570Strasz } 1711255570Strasz mtx_unlock(&softc->lock); 1712255570Strasz 1713255570Strasz if (found == 0) { 1714255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1715255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1716255570Strasz "No matching connections found"); 1717255570Strasz return; 1718255570Strasz } 1719255570Strasz 1720255570Strasz ci->status = CTL_ISCSI_OK; 1721255570Strasz} 1722255570Strasz 1723255570Strasz#ifdef ICL_KERNEL_PROXY 1724255570Straszstatic void 1725255570Straszcfiscsi_ioctl_listen(struct ctl_iscsi *ci) 1726255570Strasz{ 1727255570Strasz struct ctl_iscsi_listen_params *cilp; 1728255570Strasz struct sockaddr *sa; 1729255570Strasz int error; 1730255570Strasz 1731255570Strasz cilp = (struct ctl_iscsi_listen_params *)&(ci->data); 1732255570Strasz 1733255570Strasz if (cfiscsi_softc.listener == NULL) { 1734255570Strasz CFISCSI_DEBUG("no listener"); 1735255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "no listener"); 1736255570Strasz ci->status = CTL_ISCSI_ERROR; 1737255570Strasz return; 1738255570Strasz } 1739255570Strasz 1740255570Strasz error = getsockaddr(&sa, (void *)cilp->addr, cilp->addrlen); 1741255570Strasz if (error != 0) { 1742255570Strasz CFISCSI_DEBUG("getsockaddr, error %d", error); 1743255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "getsockaddr failed"); 1744255570Strasz ci->status = CTL_ISCSI_ERROR; 1745255570Strasz return; 1746255570Strasz } 1747255570Strasz 1748255570Strasz error = icl_listen_add(cfiscsi_softc.listener, cilp->iser, cilp->domain, 1749265509Strasz cilp->socktype, cilp->protocol, sa, cilp->portal_id); 1750255570Strasz if (error != 0) { 1751255570Strasz free(sa, M_SONAME); 1752255570Strasz CFISCSI_DEBUG("icl_listen_add, error %d", error); 1753255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1754255570Strasz "icl_listen_add failed, error %d", error); 1755255570Strasz ci->status = CTL_ISCSI_ERROR; 1756255570Strasz return; 1757255570Strasz } 1758255570Strasz 1759255570Strasz ci->status = CTL_ISCSI_OK; 1760255570Strasz} 1761255570Strasz 1762255570Straszstatic void 1763255570Straszcfiscsi_ioctl_accept(struct ctl_iscsi *ci) 1764255570Strasz{ 1765255570Strasz struct ctl_iscsi_accept_params *ciap; 1766255570Strasz struct cfiscsi_session *cs; 1767255570Strasz int error; 1768255570Strasz 1769255570Strasz ciap = (struct ctl_iscsi_accept_params *)&(ci->data); 1770255570Strasz 1771255570Strasz mtx_lock(&cfiscsi_softc.lock); 1772255570Strasz for (;;) { 1773255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1774255570Strasz if (cs->cs_waiting_for_ctld) 1775255570Strasz break; 1776255570Strasz } 1777255570Strasz if (cs != NULL) 1778255570Strasz break; 1779255570Strasz error = cv_wait_sig(&cfiscsi_softc.accept_cv, &cfiscsi_softc.lock); 1780255570Strasz if (error != 0) { 1781255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1782255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "interrupted"); 1783255570Strasz ci->status = CTL_ISCSI_ERROR; 1784255570Strasz return; 1785255570Strasz } 1786255570Strasz } 1787255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1788255570Strasz 1789255570Strasz cs->cs_waiting_for_ctld = false; 1790255570Strasz cs->cs_login_phase = true; 1791255570Strasz 1792255570Strasz ciap->connection_id = cs->cs_id; 1793265509Strasz ciap->portal_id = cs->cs_portal_id; 1794265513Strasz ciap->initiator_addrlen = cs->cs_initiator_sa->sa_len; 1795265513Strasz error = copyout(cs->cs_initiator_sa, ciap->initiator_addr, 1796265513Strasz cs->cs_initiator_sa->sa_len); 1797265513Strasz if (error != 0) { 1798265513Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1799265513Strasz "copyout failed with error %d", error); 1800265513Strasz ci->status = CTL_ISCSI_ERROR; 1801265513Strasz return; 1802265513Strasz } 1803265513Strasz 1804255570Strasz ci->status = CTL_ISCSI_OK; 1805255570Strasz} 1806255570Strasz 1807255570Straszstatic void 1808255570Straszcfiscsi_ioctl_send(struct ctl_iscsi *ci) 1809255570Strasz{ 1810255570Strasz struct ctl_iscsi_send_params *cisp; 1811255570Strasz struct cfiscsi_session *cs; 1812255570Strasz struct icl_pdu *ip; 1813255570Strasz size_t datalen; 1814255570Strasz void *data; 1815255570Strasz int error; 1816255570Strasz 1817255570Strasz cisp = (struct ctl_iscsi_send_params *)&(ci->data); 1818255570Strasz 1819255570Strasz mtx_lock(&cfiscsi_softc.lock); 1820255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1821255570Strasz if (cs->cs_id == cisp->connection_id) 1822255570Strasz break; 1823255570Strasz } 1824255570Strasz if (cs == NULL) { 1825255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1826255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1827255570Strasz ci->status = CTL_ISCSI_ERROR; 1828255570Strasz return; 1829255570Strasz } 1830255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1831255570Strasz 1832255570Strasz#if 0 1833255570Strasz if (cs->cs_login_phase == false) 1834255570Strasz return (EBUSY); 1835255570Strasz#endif 1836255570Strasz 1837255570Strasz if (cs->cs_terminating) { 1838255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection is terminating"); 1839255570Strasz ci->status = CTL_ISCSI_ERROR; 1840255570Strasz return; 1841255570Strasz } 1842255570Strasz 1843255570Strasz datalen = cisp->data_segment_len; 1844255570Strasz /* 1845255570Strasz * XXX 1846255570Strasz */ 1847255570Strasz //if (datalen > CFISCSI_MAX_DATA_SEGMENT_LENGTH) { 1848255570Strasz if (datalen > 65535) { 1849255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1850255570Strasz ci->status = CTL_ISCSI_ERROR; 1851255570Strasz return; 1852255570Strasz } 1853255570Strasz if (datalen > 0) { 1854255570Strasz data = malloc(datalen, M_CFISCSI, M_WAITOK); 1855255570Strasz error = copyin(cisp->data_segment, data, datalen); 1856255570Strasz if (error != 0) { 1857255570Strasz free(data, M_CFISCSI); 1858255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "copyin error %d", error); 1859255570Strasz ci->status = CTL_ISCSI_ERROR; 1860255570Strasz return; 1861255570Strasz } 1862255570Strasz } 1863255570Strasz 1864255570Strasz ip = icl_pdu_new_bhs(cs->cs_conn, M_WAITOK); 1865255570Strasz memcpy(ip->ip_bhs, cisp->bhs, sizeof(*ip->ip_bhs)); 1866255570Strasz if (datalen > 0) { 1867255570Strasz icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1868255570Strasz free(data, M_CFISCSI); 1869255570Strasz } 1870265507Strasz CFISCSI_SESSION_LOCK(cs); 1871255570Strasz icl_pdu_queue(ip); 1872265507Strasz CFISCSI_SESSION_UNLOCK(cs); 1873255570Strasz ci->status = CTL_ISCSI_OK; 1874255570Strasz} 1875255570Strasz 1876255570Straszstatic void 1877255570Straszcfiscsi_ioctl_receive(struct ctl_iscsi *ci) 1878255570Strasz{ 1879255570Strasz struct ctl_iscsi_receive_params *cirp; 1880255570Strasz struct cfiscsi_session *cs; 1881255570Strasz struct icl_pdu *ip; 1882255570Strasz void *data; 1883265510Strasz int error; 1884255570Strasz 1885255570Strasz cirp = (struct ctl_iscsi_receive_params *)&(ci->data); 1886255570Strasz 1887255570Strasz mtx_lock(&cfiscsi_softc.lock); 1888255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1889255570Strasz if (cs->cs_id == cirp->connection_id) 1890255570Strasz break; 1891255570Strasz } 1892255570Strasz if (cs == NULL) { 1893255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1894265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1895265510Strasz "connection not found"); 1896255570Strasz ci->status = CTL_ISCSI_ERROR; 1897255570Strasz return; 1898255570Strasz } 1899255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1900255570Strasz 1901255570Strasz#if 0 1902255570Strasz if (is->is_login_phase == false) 1903255570Strasz return (EBUSY); 1904255570Strasz#endif 1905255570Strasz 1906255570Strasz CFISCSI_SESSION_LOCK(cs); 1907265510Strasz while (cs->cs_login_pdu == NULL && cs->cs_terminating == false) { 1908265510Strasz error = cv_wait_sig(&cs->cs_login_cv, &cs->cs_lock); 1909265510Strasz if (error != 0) { 1910265510Strasz CFISCSI_SESSION_UNLOCK(cs); 1911265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1912265510Strasz "interrupted by signal"); 1913265510Strasz ci->status = CTL_ISCSI_ERROR; 1914265510Strasz return; 1915265510Strasz } 1916265510Strasz } 1917265510Strasz 1918255570Strasz if (cs->cs_terminating) { 1919255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1920265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1921265510Strasz "connection terminating"); 1922255570Strasz ci->status = CTL_ISCSI_ERROR; 1923255570Strasz return; 1924255570Strasz } 1925255570Strasz ip = cs->cs_login_pdu; 1926255570Strasz cs->cs_login_pdu = NULL; 1927255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1928255570Strasz 1929255570Strasz if (ip->ip_data_len > cirp->data_segment_len) { 1930255570Strasz icl_pdu_free(ip); 1931265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1932265510Strasz "data segment too big"); 1933255570Strasz ci->status = CTL_ISCSI_ERROR; 1934255570Strasz return; 1935255570Strasz } 1936255570Strasz 1937255570Strasz copyout(ip->ip_bhs, cirp->bhs, sizeof(*ip->ip_bhs)); 1938255570Strasz if (ip->ip_data_len > 0) { 1939255570Strasz data = malloc(ip->ip_data_len, M_CFISCSI, M_WAITOK); 1940255570Strasz icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1941255570Strasz copyout(data, cirp->data_segment, ip->ip_data_len); 1942255570Strasz free(data, M_CFISCSI); 1943255570Strasz } 1944255570Strasz 1945255570Strasz icl_pdu_free(ip); 1946255570Strasz ci->status = CTL_ISCSI_OK; 1947255570Strasz} 1948255570Strasz 1949255570Strasz#endif /* !ICL_KERNEL_PROXY */ 1950255570Strasz 1951268682Smavstatic void 1952268682Smavcfiscsi_ioctl_port_create(struct ctl_req *req) 1953268682Smav{ 1954268682Smav struct cfiscsi_target *ct; 1955268682Smav struct ctl_port *port; 1956268682Smav const char *target, *alias, *tag; 1957268683Smav struct scsi_vpd_id_descriptor *desc; 1958268682Smav ctl_options_t opts; 1959268683Smav int retval, len, idlen; 1960268682Smav 1961268682Smav ctl_init_opts(&opts, req->num_args, req->kern_args); 1962268682Smav target = ctl_get_opt(&opts, "cfiscsi_target"); 1963268682Smav alias = ctl_get_opt(&opts, "cfiscsi_target_alias"); 1964268682Smav tag = ctl_get_opt(&opts, "cfiscsi_portal_group_tag"); 1965268682Smav if (target == NULL || tag == NULL) { 1966268682Smav req->status = CTL_LUN_ERROR; 1967268682Smav snprintf(req->error_str, sizeof(req->error_str), 1968268682Smav "Missing required argument"); 1969268695Smav ctl_free_opts(&opts); 1970268682Smav return; 1971268682Smav } 1972268682Smav ct = cfiscsi_target_find_or_create(&cfiscsi_softc, target, alias); 1973268682Smav if (ct == NULL) { 1974268682Smav req->status = CTL_LUN_ERROR; 1975268682Smav snprintf(req->error_str, sizeof(req->error_str), 1976268682Smav "failed to create target \"%s\"", target); 1977268695Smav ctl_free_opts(&opts); 1978268682Smav return; 1979268682Smav } 1980268682Smav if (ct->ct_state == CFISCSI_TARGET_STATE_ACTIVE) { 1981268682Smav req->status = CTL_LUN_ERROR; 1982268682Smav snprintf(req->error_str, sizeof(req->error_str), 1983268682Smav "target \"%s\" already exist", target); 1984268695Smav cfiscsi_target_release(ct); 1985268695Smav ctl_free_opts(&opts); 1986268682Smav return; 1987268682Smav } 1988268682Smav port = &ct->ct_port; 1989268682Smav if (ct->ct_state == CFISCSI_TARGET_STATE_DYING) 1990268682Smav goto done; 1991268682Smav 1992268682Smav port->frontend = &cfiscsi_frontend; 1993268682Smav port->port_type = CTL_PORT_ISCSI; 1994268682Smav /* XXX KDM what should the real number be here? */ 1995268682Smav port->num_requested_ctl_io = 4096; 1996268682Smav port->port_name = "iscsi"; 1997268682Smav port->virtual_port = strtoul(tag, NULL, 0); 1998268682Smav port->port_online = cfiscsi_online; 1999268682Smav port->port_offline = cfiscsi_offline; 2000268688Smav port->port_info = cfiscsi_info; 2001268682Smav port->onoff_arg = ct; 2002268682Smav port->lun_enable = cfiscsi_lun_enable; 2003268682Smav port->lun_disable = cfiscsi_lun_disable; 2004268685Smav port->lun_map = cfiscsi_lun_map; 2005268682Smav port->targ_lun_arg = ct; 2006268682Smav port->fe_datamove = cfiscsi_datamove; 2007268682Smav port->fe_done = cfiscsi_done; 2008268682Smav 2009268682Smav /* XXX KDM what should we report here? */ 2010268682Smav /* XXX These should probably be fetched from CTL. */ 2011268682Smav port->max_targets = 1; 2012268682Smav port->max_target_id = 15; 2013268682Smav 2014268682Smav port->options = opts; 2015268682Smav STAILQ_INIT(&opts); 2016268682Smav 2017268683Smav /* Generate Port ID. */ 2018268683Smav idlen = strlen(target) + strlen(",t,0x0001") + 1; 2019268683Smav idlen = roundup2(idlen, 4); 2020268683Smav len = sizeof(struct scsi_vpd_device_id) + idlen; 2021268683Smav port->port_devid = malloc(sizeof(struct ctl_devid) + len, 2022268683Smav M_CTL, M_WAITOK | M_ZERO); 2023268683Smav port->port_devid->len = len; 2024268683Smav desc = (struct scsi_vpd_id_descriptor *)port->port_devid->data; 2025268683Smav desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2026268683Smav desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2027268683Smav SVPD_ID_TYPE_SCSI_NAME; 2028268683Smav desc->length = idlen; 2029268683Smav snprintf(desc->identifier, idlen, "%s,t,0x%4.4x", 2030268683Smav target, port->virtual_port); 2031268683Smav 2032268683Smav /* Generate Target ID. */ 2033268683Smav idlen = strlen(target) + 1; 2034268683Smav idlen = roundup2(idlen, 4); 2035268683Smav len = sizeof(struct scsi_vpd_device_id) + idlen; 2036268683Smav port->target_devid = malloc(sizeof(struct ctl_devid) + len, 2037268683Smav M_CTL, M_WAITOK | M_ZERO); 2038268683Smav port->target_devid->len = len; 2039268683Smav desc = (struct scsi_vpd_id_descriptor *)port->target_devid->data; 2040268683Smav desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2041268683Smav desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_TARGET | 2042268683Smav SVPD_ID_TYPE_SCSI_NAME; 2043268683Smav desc->length = idlen; 2044268683Smav strlcpy(desc->identifier, target, idlen); 2045268683Smav 2046268682Smav retval = ctl_port_register(port, /*master_SC*/ 1); 2047268682Smav if (retval != 0) { 2048268682Smav ctl_free_opts(&port->options); 2049268682Smav cfiscsi_target_release(ct); 2050268683Smav free(port->port_devid, M_CFISCSI); 2051268683Smav free(port->target_devid, M_CFISCSI); 2052268682Smav req->status = CTL_LUN_ERROR; 2053268682Smav snprintf(req->error_str, sizeof(req->error_str), 2054268682Smav "ctl_frontend_register() failed with error %d", retval); 2055268682Smav return; 2056268682Smav } 2057268682Smavdone: 2058268682Smav ct->ct_state = CFISCSI_TARGET_STATE_ACTIVE; 2059268682Smav req->status = CTL_LUN_OK; 2060268682Smav memcpy(req->kern_args[0].kvalue, &port->targ_port, 2061268682Smav sizeof(port->targ_port)); //XXX 2062268682Smav} 2063268682Smav 2064268682Smavstatic void 2065268682Smavcfiscsi_ioctl_port_remove(struct ctl_req *req) 2066268682Smav{ 2067268682Smav struct cfiscsi_target *ct; 2068268682Smav const char *target; 2069268682Smav ctl_options_t opts; 2070268682Smav 2071268682Smav ctl_init_opts(&opts, req->num_args, req->kern_args); 2072268682Smav target = ctl_get_opt(&opts, "cfiscsi_target"); 2073268682Smav if (target == NULL) { 2074268682Smav ctl_free_opts(&opts); 2075268682Smav req->status = CTL_LUN_ERROR; 2076268682Smav snprintf(req->error_str, sizeof(req->error_str), 2077268682Smav "Missing required argument"); 2078268682Smav return; 2079268682Smav } 2080268682Smav ct = cfiscsi_target_find(&cfiscsi_softc, target); 2081268682Smav if (ct == NULL) { 2082268682Smav ctl_free_opts(&opts); 2083268682Smav req->status = CTL_LUN_ERROR; 2084268682Smav snprintf(req->error_str, sizeof(req->error_str), 2085268682Smav "can't find target \"%s\"", target); 2086268682Smav return; 2087268682Smav } 2088268682Smav if (ct->ct_state != CFISCSI_TARGET_STATE_ACTIVE) { 2089268682Smav ctl_free_opts(&opts); 2090268682Smav req->status = CTL_LUN_ERROR; 2091268682Smav snprintf(req->error_str, sizeof(req->error_str), 2092268682Smav "target \"%s\" is already dying", target); 2093268682Smav return; 2094268682Smav } 2095268682Smav ctl_free_opts(&opts); 2096268682Smav 2097268682Smav ct->ct_state = CFISCSI_TARGET_STATE_DYING; 2098268682Smav ctl_port_offline(&ct->ct_port); 2099268682Smav cfiscsi_target_release(ct); 2100268682Smav cfiscsi_target_release(ct); 2101268682Smav} 2102268682Smav 2103255570Straszstatic int 2104255570Straszcfiscsi_ioctl(struct cdev *dev, 2105255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td) 2106255570Strasz{ 2107255570Strasz struct ctl_iscsi *ci; 2108268682Smav struct ctl_req *req; 2109255570Strasz 2110268682Smav if (cmd == CTL_PORT_REQ) { 2111268682Smav req = (struct ctl_req *)addr; 2112268682Smav switch (req->reqtype) { 2113268682Smav case CTL_REQ_CREATE: 2114268682Smav cfiscsi_ioctl_port_create(req); 2115268682Smav break; 2116268682Smav case CTL_REQ_REMOVE: 2117268682Smav cfiscsi_ioctl_port_remove(req); 2118268682Smav break; 2119268682Smav default: 2120268682Smav req->status = CTL_LUN_ERROR; 2121268682Smav snprintf(req->error_str, sizeof(req->error_str), 2122268682Smav "Unsupported request type %d", req->reqtype); 2123268682Smav } 2124268682Smav return (0); 2125268682Smav } 2126268682Smav 2127255570Strasz if (cmd != CTL_ISCSI) 2128255570Strasz return (ENOTTY); 2129255570Strasz 2130255570Strasz ci = (struct ctl_iscsi *)addr; 2131255570Strasz switch (ci->type) { 2132255570Strasz case CTL_ISCSI_HANDOFF: 2133255570Strasz cfiscsi_ioctl_handoff(ci); 2134255570Strasz break; 2135255570Strasz case CTL_ISCSI_LIST: 2136255570Strasz cfiscsi_ioctl_list(ci); 2137255570Strasz break; 2138255570Strasz case CTL_ISCSI_TERMINATE: 2139255570Strasz cfiscsi_ioctl_terminate(ci); 2140255570Strasz break; 2141255570Strasz case CTL_ISCSI_LOGOUT: 2142255570Strasz cfiscsi_ioctl_logout(ci); 2143255570Strasz break; 2144255570Strasz#ifdef ICL_KERNEL_PROXY 2145255570Strasz case CTL_ISCSI_LISTEN: 2146255570Strasz cfiscsi_ioctl_listen(ci); 2147255570Strasz break; 2148255570Strasz case CTL_ISCSI_ACCEPT: 2149255570Strasz cfiscsi_ioctl_accept(ci); 2150255570Strasz break; 2151255570Strasz case CTL_ISCSI_SEND: 2152255570Strasz cfiscsi_ioctl_send(ci); 2153255570Strasz break; 2154255570Strasz case CTL_ISCSI_RECEIVE: 2155255570Strasz cfiscsi_ioctl_receive(ci); 2156255570Strasz break; 2157265508Strasz#else 2158265508Strasz case CTL_ISCSI_LISTEN: 2159265508Strasz case CTL_ISCSI_ACCEPT: 2160265508Strasz case CTL_ISCSI_SEND: 2161265508Strasz case CTL_ISCSI_RECEIVE: 2162265508Strasz ci->status = CTL_ISCSI_ERROR; 2163265508Strasz snprintf(ci->error_str, sizeof(ci->error_str), 2164265508Strasz "%s: CTL compiled without ICL_KERNEL_PROXY", 2165265508Strasz __func__); 2166265508Strasz break; 2167265508Strasz#endif /* !ICL_KERNEL_PROXY */ 2168255570Strasz default: 2169255570Strasz ci->status = CTL_ISCSI_ERROR; 2170255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 2171255570Strasz "%s: invalid iSCSI request type %d", __func__, ci->type); 2172255570Strasz break; 2173255570Strasz } 2174255570Strasz 2175255570Strasz return (0); 2176255570Strasz} 2177255570Strasz 2178255570Straszstatic void 2179255570Straszcfiscsi_target_hold(struct cfiscsi_target *ct) 2180255570Strasz{ 2181255570Strasz 2182255570Strasz refcount_acquire(&ct->ct_refcount); 2183255570Strasz} 2184255570Strasz 2185255570Straszstatic void 2186255570Straszcfiscsi_target_release(struct cfiscsi_target *ct) 2187255570Strasz{ 2188255570Strasz struct cfiscsi_softc *softc; 2189255570Strasz 2190255570Strasz softc = ct->ct_softc; 2191255570Strasz mtx_lock(&softc->lock); 2192255570Strasz if (refcount_release(&ct->ct_refcount)) { 2193255570Strasz TAILQ_REMOVE(&softc->targets, ct, ct_next); 2194255570Strasz mtx_unlock(&softc->lock); 2195268682Smav if (ct->ct_state != CFISCSI_TARGET_STATE_INVALID) { 2196268682Smav ct->ct_state = CFISCSI_TARGET_STATE_INVALID; 2197268682Smav if (ctl_port_deregister(&ct->ct_port) != 0) 2198268682Smav printf("%s: ctl_port_deregister() failed\n", 2199268682Smav __func__); 2200268682Smav } 2201255570Strasz free(ct, M_CFISCSI); 2202255570Strasz 2203255570Strasz return; 2204255570Strasz } 2205255570Strasz mtx_unlock(&softc->lock); 2206255570Strasz} 2207255570Strasz 2208255570Straszstatic struct cfiscsi_target * 2209255570Straszcfiscsi_target_find(struct cfiscsi_softc *softc, const char *name) 2210255570Strasz{ 2211255570Strasz struct cfiscsi_target *ct; 2212255570Strasz 2213255570Strasz mtx_lock(&softc->lock); 2214255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2215268682Smav if (strcmp(name, ct->ct_name) != 0 || 2216268682Smav ct->ct_state != CFISCSI_TARGET_STATE_ACTIVE) 2217255570Strasz continue; 2218255570Strasz cfiscsi_target_hold(ct); 2219255570Strasz mtx_unlock(&softc->lock); 2220255570Strasz return (ct); 2221255570Strasz } 2222255570Strasz mtx_unlock(&softc->lock); 2223255570Strasz 2224255570Strasz return (NULL); 2225255570Strasz} 2226255570Strasz 2227255570Straszstatic struct cfiscsi_target * 2228255570Straszcfiscsi_target_find_or_create(struct cfiscsi_softc *softc, const char *name, 2229255570Strasz const char *alias) 2230255570Strasz{ 2231255570Strasz struct cfiscsi_target *ct, *newct; 2232255570Strasz int i; 2233255570Strasz 2234255570Strasz if (name[0] == '\0' || strlen(name) >= CTL_ISCSI_NAME_LEN) 2235255570Strasz return (NULL); 2236255570Strasz 2237255570Strasz newct = malloc(sizeof(*newct), M_CFISCSI, M_WAITOK | M_ZERO); 2238255570Strasz 2239255570Strasz mtx_lock(&softc->lock); 2240255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2241268682Smav if (strcmp(name, ct->ct_name) != 0 || 2242268682Smav ct->ct_state == CFISCSI_TARGET_STATE_INVALID) 2243255570Strasz continue; 2244255570Strasz cfiscsi_target_hold(ct); 2245255570Strasz mtx_unlock(&softc->lock); 2246255570Strasz free(newct, M_CFISCSI); 2247255570Strasz return (ct); 2248255570Strasz } 2249255570Strasz 2250255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) 2251268685Smav newct->ct_luns[i] = UINT32_MAX; 2252255570Strasz 2253255570Strasz strlcpy(newct->ct_name, name, sizeof(newct->ct_name)); 2254255570Strasz if (alias != NULL) 2255255570Strasz strlcpy(newct->ct_alias, alias, sizeof(newct->ct_alias)); 2256255570Strasz refcount_init(&newct->ct_refcount, 1); 2257255570Strasz newct->ct_softc = softc; 2258255570Strasz TAILQ_INSERT_TAIL(&softc->targets, newct, ct_next); 2259255570Strasz mtx_unlock(&softc->lock); 2260255570Strasz 2261255570Strasz return (newct); 2262255570Strasz} 2263255570Strasz 2264255570Strasz/* 2265255570Strasz * Takes LUN from the target space and returns LUN from the CTL space. 2266255570Strasz */ 2267255570Straszstatic uint32_t 2268268685Smavcfiscsi_lun_map(void *arg, uint32_t lun) 2269255570Strasz{ 2270268685Smav struct cfiscsi_target *ct = arg; 2271255570Strasz 2272255570Strasz if (lun >= CTL_MAX_LUNS) { 2273255570Strasz CFISCSI_DEBUG("requested lun number %d is higher " 2274255570Strasz "than maximum %d", lun, CTL_MAX_LUNS - 1); 2275268685Smav return (UINT32_MAX); 2276255570Strasz } 2277268685Smav return (ct->ct_luns[lun]); 2278255570Strasz} 2279255570Strasz 2280255570Straszstatic int 2281255570Straszcfiscsi_target_set_lun(struct cfiscsi_target *ct, 2282255570Strasz unsigned long lun_id, unsigned long ctl_lun_id) 2283255570Strasz{ 2284255570Strasz 2285255570Strasz if (lun_id >= CTL_MAX_LUNS) { 2286255570Strasz CFISCSI_WARN("requested lun number %ld is higher " 2287255570Strasz "than maximum %d", lun_id, CTL_MAX_LUNS - 1); 2288255570Strasz return (-1); 2289255570Strasz } 2290255570Strasz 2291268685Smav if (ct->ct_luns[lun_id] < CTL_MAX_LUNS) { 2292255570Strasz /* 2293255570Strasz * CTL calls cfiscsi_lun_enable() twice for each LUN - once 2294255570Strasz * when the LUN is created, and a second time just before 2295255570Strasz * the port is brought online; don't emit warnings 2296255570Strasz * for that case. 2297255570Strasz */ 2298255570Strasz if (ct->ct_luns[lun_id] == ctl_lun_id) 2299255570Strasz return (0); 2300255570Strasz CFISCSI_WARN("lun %ld already allocated", lun_id); 2301255570Strasz return (-1); 2302255570Strasz } 2303255570Strasz 2304255570Strasz#if 0 2305255570Strasz CFISCSI_DEBUG("adding mapping for lun %ld, target %s " 2306255570Strasz "to ctl lun %ld", lun_id, ct->ct_name, ctl_lun_id); 2307255570Strasz#endif 2308255570Strasz 2309255570Strasz ct->ct_luns[lun_id] = ctl_lun_id; 2310255570Strasz 2311255570Strasz return (0); 2312255570Strasz} 2313255570Strasz 2314255570Straszstatic int 2315255570Straszcfiscsi_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 2316255570Strasz{ 2317255570Strasz struct cfiscsi_softc *softc; 2318255570Strasz struct cfiscsi_target *ct; 2319268682Smav const char *target = NULL; 2320255570Strasz const char *lun = NULL; 2321255570Strasz unsigned long tmp; 2322255570Strasz 2323268682Smav ct = (struct cfiscsi_target *)arg; 2324268682Smav softc = ct->ct_softc; 2325255570Strasz 2326268678Smav target = ctl_get_opt(&control_softc->ctl_luns[lun_id]->be_lun->options, 2327268143Smav "cfiscsi_target"); 2328268678Smav lun = ctl_get_opt(&control_softc->ctl_luns[lun_id]->be_lun->options, 2329268143Smav "cfiscsi_lun"); 2330255570Strasz 2331255570Strasz if (target == NULL && lun == NULL) 2332255570Strasz return (0); 2333255570Strasz 2334255570Strasz if (target == NULL || lun == NULL) { 2335255570Strasz CFISCSI_WARN("lun added with cfiscsi_target, but without " 2336255570Strasz "cfiscsi_lun, or the other way around; ignoring"); 2337255570Strasz return (0); 2338255570Strasz } 2339255570Strasz 2340268682Smav if (strcmp(target, ct->ct_name) != 0) 2341255570Strasz return (0); 2342255570Strasz 2343255570Strasz tmp = strtoul(lun, NULL, 10); 2344255570Strasz cfiscsi_target_set_lun(ct, tmp, lun_id); 2345255570Strasz return (0); 2346255570Strasz} 2347255570Strasz 2348255570Straszstatic int 2349255570Straszcfiscsi_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 2350255570Strasz{ 2351255570Strasz struct cfiscsi_softc *softc; 2352255570Strasz struct cfiscsi_target *ct; 2353255570Strasz int i; 2354255570Strasz 2355268682Smav ct = (struct cfiscsi_target *)arg; 2356268682Smav softc = ct->ct_softc; 2357255570Strasz 2358255570Strasz mtx_lock(&softc->lock); 2359268682Smav for (i = 0; i < CTL_MAX_LUNS; i++) { 2360268682Smav if (ct->ct_luns[i] != lun_id) 2361268682Smav continue; 2362268685Smav ct->ct_luns[i] = UINT32_MAX; 2363268682Smav break; 2364255570Strasz } 2365255570Strasz mtx_unlock(&softc->lock); 2366255570Strasz return (0); 2367255570Strasz} 2368255570Strasz 2369255570Straszstatic void 2370256065Straszcfiscsi_datamove_in(union ctl_io *io) 2371255570Strasz{ 2372255570Strasz struct cfiscsi_session *cs; 2373255570Strasz struct icl_pdu *request, *response; 2374255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 2375255570Strasz struct iscsi_bhs_data_in *bhsdi; 2376255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2377265490Strasz size_t len, expected_len, sg_len, buffer_offset; 2378265490Strasz const char *sg_addr; 2379255824Strasz int ctl_sg_count, error, i; 2380255570Strasz 2381255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2382255570Strasz cs = PDU_SESSION(request); 2383255570Strasz 2384255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2385255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2386255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2387255570Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2388255570Strasz 2389255570Strasz if (io->scsiio.kern_sg_entries > 0) { 2390255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2391255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 2392255570Strasz } else { 2393255570Strasz ctl_sglist = &ctl_sg_entry; 2394255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 2395255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 2396255570Strasz ctl_sg_count = 1; 2397255570Strasz } 2398255570Strasz 2399255570Strasz /* 2400265490Strasz * This is the total amount of data to be transferred within the current 2401265490Strasz * SCSI command. We need to record it so that we can properly report 2402255570Strasz * underflow/underflow. 2403255570Strasz */ 2404255570Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2405255570Strasz 2406256065Strasz /* 2407265490Strasz * This is the offset within the current SCSI command; for the first 2408265490Strasz * call to cfiscsi_datamove() it will be 0, and for subsequent ones 2409265640Smav * it will be the sum of lengths of previous ones. 2410256065Strasz */ 2411265490Strasz buffer_offset = io->scsiio.kern_rel_offset; 2412255570Strasz 2413265490Strasz /* 2414265490Strasz * This is the transfer length expected by the initiator. In theory, 2415265490Strasz * it could be different from the correct amount of data from the SCSI 2416265490Strasz * point of view, even if that doesn't make any sense. 2417265490Strasz */ 2418265490Strasz expected_len = ntohl(bhssc->bhssc_expected_data_transfer_length); 2419265490Strasz#if 0 2420265640Smav if (expected_len != io->scsiio.kern_total_len) { 2421265640Smav CFISCSI_SESSION_DEBUG(cs, "expected transfer length %zd, " 2422265640Smav "actual length %zd", expected_len, 2423265640Smav (size_t)io->scsiio.kern_total_len); 2424265640Smav } 2425265490Strasz#endif 2426265490Strasz 2427265490Strasz if (buffer_offset >= expected_len) { 2428265490Strasz#if 0 2429265490Strasz CFISCSI_SESSION_DEBUG(cs, "buffer_offset = %zd, " 2430265490Strasz "already sent the expected len", buffer_offset); 2431265490Strasz#endif 2432265490Strasz io->scsiio.be_move_done(io); 2433265490Strasz return; 2434265490Strasz } 2435265490Strasz 2436256065Strasz i = 0; 2437265490Strasz sg_addr = NULL; 2438265490Strasz sg_len = 0; 2439256065Strasz response = NULL; 2440256065Strasz bhsdi = NULL; 2441256065Strasz for (;;) { 2442256065Strasz if (response == NULL) { 2443256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2444255570Strasz if (response == NULL) { 2445255824Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2446255824Strasz "allocate memory; dropping connection"); 2447256163Strasz ctl_set_busy(&io->scsiio); 2448256163Strasz io->scsiio.be_move_done(io); 2449255824Strasz cfiscsi_session_terminate(cs); 2450255824Strasz return; 2451255824Strasz } 2452256065Strasz bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 2453256065Strasz bhsdi->bhsdi_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_IN; 2454256065Strasz bhsdi->bhsdi_initiator_task_tag = 2455256065Strasz bhssc->bhssc_initiator_task_tag; 2456256065Strasz bhsdi->bhsdi_datasn = htonl(PDU_EXPDATASN(request)); 2457256065Strasz PDU_EXPDATASN(request)++; 2458265490Strasz bhsdi->bhsdi_buffer_offset = htonl(buffer_offset); 2459256065Strasz } 2460255570Strasz 2461265490Strasz KASSERT(i < ctl_sg_count, ("i >= ctl_sg_count")); 2462265490Strasz if (sg_len == 0) { 2463265490Strasz sg_addr = ctl_sglist[i].addr; 2464265490Strasz sg_len = ctl_sglist[i].len; 2465265490Strasz KASSERT(sg_len > 0, ("sg_len <= 0")); 2466256065Strasz } 2467255570Strasz 2468265490Strasz len = sg_len; 2469265490Strasz 2470265490Strasz /* 2471265490Strasz * Truncate to maximum data segment length. 2472265490Strasz */ 2473265490Strasz KASSERT(response->ip_data_len < cs->cs_max_data_segment_length, 2474265640Smav ("ip_data_len %zd >= max_data_segment_length %zd", 2475265490Strasz response->ip_data_len, cs->cs_max_data_segment_length)); 2476265490Strasz if (response->ip_data_len + len > 2477265640Smav cs->cs_max_data_segment_length) { 2478265490Strasz len = cs->cs_max_data_segment_length - 2479256065Strasz response->ip_data_len; 2480265640Smav KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2481265640Smav len, sg_len)); 2482265640Smav } 2483265490Strasz 2484265490Strasz /* 2485265490Strasz * Truncate to expected data transfer length. 2486265490Strasz */ 2487265490Strasz KASSERT(buffer_offset + response->ip_data_len < expected_len, 2488265640Smav ("buffer_offset %zd + ip_data_len %zd >= expected_len %zd", 2489265640Smav buffer_offset, response->ip_data_len, expected_len)); 2490265490Strasz if (buffer_offset + response->ip_data_len + len > expected_len) { 2491265490Strasz CFISCSI_SESSION_DEBUG(cs, "truncating from %zd " 2492265490Strasz "to expected data transfer length %zd", 2493265490Strasz buffer_offset + response->ip_data_len + len, expected_len); 2494265490Strasz len = expected_len - (buffer_offset + response->ip_data_len); 2495265640Smav KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2496265640Smav len, sg_len)); 2497265490Strasz } 2498265490Strasz 2499265490Strasz error = icl_pdu_append_data(response, sg_addr, len, M_NOWAIT); 2500256065Strasz if (error != 0) { 2501256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2502256065Strasz "allocate memory; dropping connection"); 2503256065Strasz icl_pdu_free(response); 2504256163Strasz ctl_set_busy(&io->scsiio); 2505256163Strasz io->scsiio.be_move_done(io); 2506256065Strasz cfiscsi_session_terminate(cs); 2507256065Strasz return; 2508256065Strasz } 2509265490Strasz sg_addr += len; 2510265490Strasz sg_len -= len; 2511256065Strasz 2512272101Smav KASSERT(buffer_offset + response->ip_data_len <= expected_len, 2513265640Smav ("buffer_offset %zd + ip_data_len %zd > expected_len %zd", 2514272101Smav buffer_offset, response->ip_data_len, expected_len)); 2515272101Smav if (buffer_offset + response->ip_data_len == expected_len) { 2516256065Strasz /* 2517265490Strasz * Already have the amount of data the initiator wanted. 2518265490Strasz */ 2519265490Strasz break; 2520265490Strasz } 2521265490Strasz 2522265490Strasz if (sg_len == 0) { 2523265490Strasz /* 2524256065Strasz * End of scatter-gather segment; 2525256065Strasz * proceed to the next one... 2526256065Strasz */ 2527256065Strasz if (i == ctl_sg_count - 1) { 2528255570Strasz /* 2529256065Strasz * ... unless this was the last one. 2530255570Strasz */ 2531256065Strasz break; 2532255570Strasz } 2533256065Strasz i++; 2534255570Strasz } 2535256065Strasz 2536256065Strasz if (response->ip_data_len == cs->cs_max_data_segment_length) { 2537256065Strasz /* 2538256065Strasz * Can't stuff more data into the current PDU; 2539256065Strasz * queue it. Note that's not enough to check 2540256195Strasz * for kern_data_resid == 0 instead; there 2541256065Strasz * may be several Data-In PDUs for the final 2542256065Strasz * call to cfiscsi_datamove(), and we want 2543256065Strasz * to set the F flag only on the last of them. 2544256065Strasz */ 2545265640Smav buffer_offset += response->ip_data_len; 2546265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2547265490Strasz buffer_offset == expected_len) 2548255570Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2549255570Strasz cfiscsi_pdu_queue(response); 2550256065Strasz response = NULL; 2551256065Strasz bhsdi = NULL; 2552255570Strasz } 2553256065Strasz } 2554256065Strasz if (response != NULL) { 2555265640Smav buffer_offset += response->ip_data_len; 2556265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2557265490Strasz buffer_offset == expected_len) 2558256065Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2559256065Strasz KASSERT(response->ip_data_len > 0, ("sending empty Data-In")); 2560256065Strasz cfiscsi_pdu_queue(response); 2561256065Strasz } 2562255570Strasz 2563256065Strasz io->scsiio.be_move_done(io); 2564256065Strasz} 2565255570Strasz 2566256065Straszstatic void 2567256065Straszcfiscsi_datamove_out(union ctl_io *io) 2568256065Strasz{ 2569256065Strasz struct cfiscsi_session *cs; 2570256065Strasz struct icl_pdu *request, *response; 2571256065Strasz const struct iscsi_bhs_scsi_command *bhssc; 2572256065Strasz struct iscsi_bhs_r2t *bhsr2t; 2573256065Strasz struct cfiscsi_data_wait *cdw; 2574256065Strasz uint32_t target_transfer_tag; 2575256065Strasz bool done; 2576256065Strasz 2577256065Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2578256065Strasz cs = PDU_SESSION(request); 2579256065Strasz 2580256065Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2581256065Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2582256065Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2583256065Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2584256065Strasz 2585256065Strasz /* 2586256065Strasz * We need to record it so that we can properly report 2587256065Strasz * underflow/underflow. 2588256065Strasz */ 2589256065Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2590256065Strasz 2591265640Smav /* 2592265640Smav * We hadn't received anything during this datamove yet. 2593265640Smav */ 2594265640Smav io->scsiio.ext_data_filled = 0; 2595265640Smav 2596265497Strasz target_transfer_tag = 2597265497Strasz atomic_fetchadd_32(&cs->cs_target_transfer_tag, 1); 2598256065Strasz 2599255570Strasz#if 0 2600256065Strasz CFISCSI_SESSION_DEBUG(cs, "expecting Data-Out with initiator " 2601256065Strasz "task tag 0x%x, target transfer tag 0x%x", 2602256065Strasz bhssc->bhssc_initiator_task_tag, target_transfer_tag); 2603255570Strasz#endif 2604256065Strasz cdw = uma_zalloc(cfiscsi_data_wait_zone, M_NOWAIT | M_ZERO); 2605256065Strasz if (cdw == NULL) { 2606256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2607256065Strasz "allocate memory; dropping connection"); 2608256163Strasz ctl_set_busy(&io->scsiio); 2609256163Strasz io->scsiio.be_move_done(io); 2610256065Strasz cfiscsi_session_terminate(cs); 2611256163Strasz return; 2612256065Strasz } 2613256065Strasz cdw->cdw_ctl_io = io; 2614265489Strasz cdw->cdw_target_transfer_tag = target_transfer_tag; 2615256065Strasz cdw->cdw_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2616256065Strasz 2617268141Smav if (cs->cs_immediate_data && io->scsiio.kern_rel_offset < 2618268141Smav icl_pdu_data_segment_length(request)) { 2619256065Strasz done = cfiscsi_handle_data_segment(request, cdw); 2620256065Strasz if (done) { 2621256065Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2622256065Strasz io->scsiio.be_move_done(io); 2623256065Strasz return; 2624255837Strasz } 2625256065Strasz } 2626255570Strasz 2627256065Strasz CFISCSI_SESSION_LOCK(cs); 2628256065Strasz TAILQ_INSERT_TAIL(&cs->cs_waiting_for_data_out, cdw, cdw_next); 2629256065Strasz CFISCSI_SESSION_UNLOCK(cs); 2630255570Strasz 2631256065Strasz /* 2632256065Strasz * XXX: We should limit the number of outstanding R2T PDUs 2633256065Strasz * per task to MaxOutstandingR2T. 2634256065Strasz */ 2635256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2636256065Strasz if (response == NULL) { 2637256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2638256065Strasz "allocate memory; dropping connection"); 2639256163Strasz ctl_set_busy(&io->scsiio); 2640256163Strasz io->scsiio.be_move_done(io); 2641256065Strasz cfiscsi_session_terminate(cs); 2642256163Strasz return; 2643255570Strasz } 2644256065Strasz bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 2645256065Strasz bhsr2t->bhsr2t_opcode = ISCSI_BHS_OPCODE_R2T; 2646256065Strasz bhsr2t->bhsr2t_flags = 0x80; 2647256065Strasz bhsr2t->bhsr2t_lun = bhssc->bhssc_lun; 2648256065Strasz bhsr2t->bhsr2t_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2649265489Strasz bhsr2t->bhsr2t_target_transfer_tag = target_transfer_tag; 2650256065Strasz /* 2651256065Strasz * XXX: Here we assume that cfiscsi_datamove() won't ever 2652256065Strasz * be running concurrently on several CPUs for a given 2653256065Strasz * command. 2654256065Strasz */ 2655256065Strasz bhsr2t->bhsr2t_r2tsn = htonl(PDU_R2TSN(request)); 2656256065Strasz PDU_R2TSN(request)++; 2657256065Strasz /* 2658256065Strasz * This is the offset within the current SCSI command; 2659256065Strasz * i.e. for the first call of datamove(), it will be 0, 2660256065Strasz * and for subsequent ones it will be the sum of lengths 2661256065Strasz * of previous ones. 2662256065Strasz * 2663256065Strasz * The ext_data_filled is to account for unsolicited 2664256065Strasz * (immediate) data that might have already arrived. 2665256065Strasz */ 2666256065Strasz bhsr2t->bhsr2t_buffer_offset = 2667256065Strasz htonl(io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled); 2668256065Strasz /* 2669256065Strasz * This is the total length (sum of S/G lengths) this call 2670256065Strasz * to cfiscsi_datamove() is supposed to handle. 2671256065Strasz * 2672256065Strasz * XXX: Limit it to MaxBurstLength. 2673256065Strasz */ 2674256065Strasz bhsr2t->bhsr2t_desired_data_transfer_length = 2675256065Strasz htonl(io->scsiio.kern_data_len - io->scsiio.ext_data_filled); 2676256065Strasz cfiscsi_pdu_queue(response); 2677255570Strasz} 2678255570Strasz 2679255570Straszstatic void 2680256065Straszcfiscsi_datamove(union ctl_io *io) 2681256065Strasz{ 2682256065Strasz 2683256065Strasz if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 2684256065Strasz cfiscsi_datamove_in(io); 2685256065Strasz else 2686256065Strasz cfiscsi_datamove_out(io); 2687256065Strasz} 2688256065Strasz 2689256065Straszstatic void 2690255570Straszcfiscsi_scsi_command_done(union ctl_io *io) 2691255570Strasz{ 2692255570Strasz struct icl_pdu *request, *response; 2693255570Strasz struct iscsi_bhs_scsi_command *bhssc; 2694255570Strasz struct iscsi_bhs_scsi_response *bhssr; 2695255570Strasz#ifdef DIAGNOSTIC 2696255570Strasz struct cfiscsi_data_wait *cdw; 2697255570Strasz#endif 2698255570Strasz struct cfiscsi_session *cs; 2699255570Strasz uint16_t sense_length; 2700255570Strasz 2701255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2702255570Strasz cs = PDU_SESSION(request); 2703255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2704255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2705255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2706255570Strasz ("replying to wrong opcode 0x%x", bhssc->bhssc_opcode)); 2707255570Strasz 2708255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 2709255570Strasz // bhssc->bhssc_initiator_task_tag); 2710255570Strasz 2711255570Strasz#ifdef DIAGNOSTIC 2712255570Strasz CFISCSI_SESSION_LOCK(cs); 2713255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) 2714255570Strasz KASSERT(bhssc->bhssc_initiator_task_tag != 2715255570Strasz cdw->cdw_initiator_task_tag, ("dangling cdw")); 2716255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2717255570Strasz#endif 2718255570Strasz 2719268554Smav /* 2720268554Smav * Do not return status for aborted commands. 2721268554Smav * There are exceptions, but none supported by CTL yet. 2722268554Smav */ 2723269296Smav if ((io->io_hdr.flags & CTL_FLAG_ABORT) && 2724268697Smav (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) { 2725268554Smav ctl_free_io(io); 2726268554Smav icl_pdu_free(request); 2727268554Smav return; 2728268554Smav } 2729268554Smav 2730255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2731255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 2732255570Strasz bhssr->bhssr_opcode = ISCSI_BHS_OPCODE_SCSI_RESPONSE; 2733255570Strasz bhssr->bhssr_flags = 0x80; 2734255570Strasz /* 2735255570Strasz * XXX: We don't deal with bidirectional under/overflows; 2736255570Strasz * does anything actually support those? 2737255570Strasz */ 2738255570Strasz if (PDU_TOTAL_TRANSFER_LEN(request) < 2739255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2740255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_UNDERFLOW; 2741255570Strasz bhssr->bhssr_residual_count = 2742255570Strasz htonl(ntohl(bhssc->bhssc_expected_data_transfer_length) - 2743255570Strasz PDU_TOTAL_TRANSFER_LEN(request)); 2744255570Strasz //CFISCSI_SESSION_DEBUG(cs, "underflow; residual count %d", 2745255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2746255570Strasz } else if (PDU_TOTAL_TRANSFER_LEN(request) > 2747255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2748255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_OVERFLOW; 2749255570Strasz bhssr->bhssr_residual_count = 2750255570Strasz htonl(PDU_TOTAL_TRANSFER_LEN(request) - 2751255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)); 2752255570Strasz //CFISCSI_SESSION_DEBUG(cs, "overflow; residual count %d", 2753255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2754255570Strasz } 2755255570Strasz bhssr->bhssr_response = BHSSR_RESPONSE_COMMAND_COMPLETED; 2756255570Strasz bhssr->bhssr_status = io->scsiio.scsi_status; 2757255570Strasz bhssr->bhssr_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2758255570Strasz bhssr->bhssr_expdatasn = htonl(PDU_EXPDATASN(request)); 2759255570Strasz 2760255570Strasz if (io->scsiio.sense_len > 0) { 2761255570Strasz#if 0 2762255570Strasz CFISCSI_SESSION_DEBUG(cs, "returning %d bytes of sense data", 2763255570Strasz io->scsiio.sense_len); 2764255570Strasz#endif 2765255570Strasz sense_length = htons(io->scsiio.sense_len); 2766255570Strasz icl_pdu_append_data(response, 2767255570Strasz &sense_length, sizeof(sense_length), M_WAITOK); 2768255570Strasz icl_pdu_append_data(response, 2769255570Strasz &io->scsiio.sense_data, io->scsiio.sense_len, M_WAITOK); 2770255570Strasz } 2771255570Strasz 2772255570Strasz ctl_free_io(io); 2773255570Strasz icl_pdu_free(request); 2774255570Strasz cfiscsi_pdu_queue(response); 2775255570Strasz} 2776255570Strasz 2777255570Straszstatic void 2778255570Straszcfiscsi_task_management_done(union ctl_io *io) 2779255570Strasz{ 2780255570Strasz struct icl_pdu *request, *response; 2781255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 2782255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 2783255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 2784255570Strasz struct cfiscsi_session *cs; 2785255570Strasz 2786255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2787255570Strasz cs = PDU_SESSION(request); 2788255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2789255570Strasz KASSERT((bhstmr->bhstmr_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2790255570Strasz ISCSI_BHS_OPCODE_TASK_REQUEST, 2791255570Strasz ("replying to wrong opcode 0x%x", bhstmr->bhstmr_opcode)); 2792255570Strasz 2793255570Strasz#if 0 2794255570Strasz CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x; referenced task tag 0x%x", 2795255570Strasz bhstmr->bhstmr_initiator_task_tag, 2796255570Strasz bhstmr->bhstmr_referenced_task_tag); 2797255570Strasz#endif 2798255570Strasz 2799255570Strasz if ((bhstmr->bhstmr_function & ~0x80) == 2800255570Strasz BHSTMR_FUNCTION_ABORT_TASK) { 2801255570Strasz /* 2802255570Strasz * Make sure we no longer wait for Data-Out for this command. 2803255570Strasz */ 2804255570Strasz CFISCSI_SESSION_LOCK(cs); 2805255570Strasz TAILQ_FOREACH_SAFE(cdw, 2806255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 2807255570Strasz if (bhstmr->bhstmr_referenced_task_tag != 2808255570Strasz cdw->cdw_initiator_task_tag) 2809255570Strasz continue; 2810255570Strasz 2811255570Strasz#if 0 2812255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task " 2813255570Strasz "tag 0x%x", bhstmr->bhstmr_initiator_task_tag); 2814255570Strasz#endif 2815255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, 2816255570Strasz cdw, cdw_next); 2817255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 2818255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2819255570Strasz } 2820255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2821255570Strasz } 2822255570Strasz 2823255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2824255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 2825255570Strasz response->ip_bhs; 2826255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 2827255570Strasz bhstmr2->bhstmr_flags = 0x80; 2828255570Strasz if (io->io_hdr.status == CTL_SUCCESS) { 2829255570Strasz bhstmr2->bhstmr_response = BHSTMR_RESPONSE_FUNCTION_COMPLETE; 2830255570Strasz } else { 2831255570Strasz /* 2832255570Strasz * XXX: How to figure out what exactly went wrong? iSCSI spec 2833255570Strasz * expects us to provide detailed error, e.g. "Task does 2834255570Strasz * not exist" or "LUN does not exist". 2835255570Strasz */ 2836255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED"); 2837255570Strasz bhstmr2->bhstmr_response = 2838255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 2839255570Strasz } 2840255570Strasz bhstmr2->bhstmr_initiator_task_tag = bhstmr->bhstmr_initiator_task_tag; 2841255570Strasz 2842255570Strasz ctl_free_io(io); 2843255570Strasz icl_pdu_free(request); 2844255570Strasz cfiscsi_pdu_queue(response); 2845255570Strasz} 2846255570Strasz 2847255570Straszstatic void 2848255570Straszcfiscsi_done(union ctl_io *io) 2849255570Strasz{ 2850255570Strasz struct icl_pdu *request; 2851255570Strasz struct cfiscsi_session *cs; 2852255570Strasz 2853255570Strasz KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 2854255570Strasz ("invalid CTL status %#x", io->io_hdr.status)); 2855255570Strasz 2856268690Smav if (io->io_hdr.io_type == CTL_IO_TASK && 2857268690Smav io->taskio.task_action == CTL_TASK_I_T_NEXUS_RESET) { 2858255570Strasz /* 2859255570Strasz * Implicit task termination has just completed; nothing to do. 2860255570Strasz */ 2861268690Smav cs = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2862268691Smav cs->cs_tasks_aborted = true; 2863268690Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 2864268691Smav wakeup(__DEVOLATILE(void *, &cs->cs_outstanding_ctl_pdus)); 2865268690Smav ctl_free_io(io); 2866255570Strasz return; 2867255570Strasz } 2868255570Strasz 2869268690Smav request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2870255570Strasz cs = PDU_SESSION(request); 2871255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 2872255570Strasz 2873255570Strasz switch (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) { 2874255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 2875255570Strasz cfiscsi_scsi_command_done(io); 2876255570Strasz break; 2877255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 2878255570Strasz cfiscsi_task_management_done(io); 2879255570Strasz break; 2880255570Strasz default: 2881255570Strasz panic("cfiscsi_done called with wrong opcode 0x%x", 2882255570Strasz request->ip_bhs->bhs_opcode); 2883255570Strasz } 2884255570Strasz} 2885