ctl_frontend_iscsi.c revision 268682
1255570Strasz/*- 2255570Strasz * Copyright (c) 2012 The FreeBSD Foundation 3255570Strasz * All rights reserved. 4255570Strasz * 5255570Strasz * This software was developed by Edward Tomasz Napierala under sponsorship 6255570Strasz * from the FreeBSD Foundation. 7255570Strasz * 8255570Strasz * Redistribution and use in source and binary forms, with or without 9255570Strasz * modification, are permitted provided that the following conditions 10255570Strasz * are met: 11255570Strasz * 1. Redistributions of source code must retain the above copyright 12255570Strasz * notice, this list of conditions and the following disclaimer. 13255570Strasz * 2. Redistributions in binary form must reproduce the above copyright 14255570Strasz * notice, this list of conditions and the following disclaimer in the 15255570Strasz * documentation and/or other materials provided with the distribution. 16255570Strasz * 17255570Strasz * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18255570Strasz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19255570Strasz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20255570Strasz * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21255570Strasz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22255570Strasz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23255570Strasz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24255570Strasz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25255570Strasz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26255570Strasz * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27255570Strasz * SUCH DAMAGE. 28255570Strasz * 29255570Strasz * $FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_iscsi.c 268682 2014-07-15 17:05:11Z mav $ 30255570Strasz */ 31255570Strasz 32255570Strasz/* 33255570Strasz * CTL frontend for the iSCSI protocol. 34255570Strasz */ 35255570Strasz 36255570Strasz#include <sys/cdefs.h> 37255570Strasz__FBSDID("$FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_iscsi.c 268682 2014-07-15 17:05:11Z mav $"); 38255570Strasz 39255570Strasz#include <sys/param.h> 40255570Strasz#include <sys/capability.h> 41255570Strasz#include <sys/condvar.h> 42255570Strasz#include <sys/file.h> 43255570Strasz#include <sys/kernel.h> 44255570Strasz#include <sys/kthread.h> 45255570Strasz#include <sys/lock.h> 46255570Strasz#include <sys/malloc.h> 47255570Strasz#include <sys/module.h> 48255570Strasz#include <sys/mutex.h> 49255570Strasz#include <sys/queue.h> 50255570Strasz#include <sys/sbuf.h> 51255570Strasz#include <sys/sysctl.h> 52255570Strasz#include <sys/systm.h> 53255570Strasz#include <sys/uio.h> 54255570Strasz#include <sys/unistd.h> 55255570Strasz#include <vm/uma.h> 56255570Strasz 57255570Strasz#include <cam/scsi/scsi_all.h> 58255570Strasz#include <cam/scsi/scsi_da.h> 59255570Strasz#include <cam/ctl/ctl_io.h> 60255570Strasz#include <cam/ctl/ctl.h> 61255570Strasz#include <cam/ctl/ctl_backend.h> 62256163Strasz#include <cam/ctl/ctl_error.h> 63255570Strasz#include <cam/ctl/ctl_frontend.h> 64255570Strasz#include <cam/ctl/ctl_frontend_internal.h> 65255570Strasz#include <cam/ctl/ctl_debug.h> 66255570Strasz#include <cam/ctl/ctl_ha.h> 67255570Strasz#include <cam/ctl/ctl_ioctl.h> 68255570Strasz#include <cam/ctl/ctl_private.h> 69255570Strasz 70255570Strasz#include "../../dev/iscsi/icl.h" 71255570Strasz#include "../../dev/iscsi/iscsi_proto.h" 72255570Strasz#include "ctl_frontend_iscsi.h" 73255570Strasz 74255570Strasz#ifdef ICL_KERNEL_PROXY 75255570Strasz#include <sys/socketvar.h> 76255570Strasz#endif 77255570Strasz 78265508Strasz#ifdef ICL_KERNEL_PROXY 79265508StraszFEATURE(cfiscsi_kernel_proxy, "iSCSI target built with ICL_KERNEL_PROXY"); 80265508Strasz#endif 81265508Strasz 82255570Straszstatic MALLOC_DEFINE(M_CFISCSI, "cfiscsi", "Memory used for CTL iSCSI frontend"); 83255570Straszstatic uma_zone_t cfiscsi_data_wait_zone; 84255570Strasz 85255570StraszSYSCTL_NODE(_kern_cam_ctl, OID_AUTO, iscsi, CTLFLAG_RD, 0, 86255570Strasz "CAM Target Layer iSCSI Frontend"); 87255570Straszstatic int debug = 3; 88255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.debug", &debug); 89265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 90255570Strasz &debug, 1, "Enable debug messages"); 91255570Straszstatic int ping_timeout = 5; 92255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.ping_timeout", &ping_timeout); 93265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, 94255570Strasz &ping_timeout, 5, "Interval between ping (NOP-Out) requests, in seconds"); 95255570Straszstatic int login_timeout = 60; 96255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.login_timeout", &login_timeout); 97265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, 98255570Strasz &login_timeout, 60, "Time to wait for ctld(8) to finish Login Phase, in seconds"); 99255570Straszstatic int maxcmdsn_delta = 256; 100255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.maxcmdsn_delta", &maxcmdsn_delta); 101265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, maxcmdsn_delta, CTLFLAG_RWTUN, 102255570Strasz &maxcmdsn_delta, 256, "Number of commands the initiator can send " 103255570Strasz "without confirmation"); 104255570Strasz 105265505Strasz#define CFISCSI_DEBUG(X, ...) \ 106265505Strasz do { \ 107265505Strasz if (debug > 1) { \ 108265505Strasz printf("%s: " X "\n", \ 109265505Strasz __func__, ## __VA_ARGS__); \ 110265505Strasz } \ 111255570Strasz } while (0) 112255570Strasz 113265505Strasz#define CFISCSI_WARN(X, ...) \ 114265505Strasz do { \ 115265505Strasz if (debug > 0) { \ 116265505Strasz printf("WARNING: %s: " X "\n", \ 117265505Strasz __func__, ## __VA_ARGS__); \ 118265505Strasz } \ 119255570Strasz } while (0) 120255570Strasz 121265505Strasz#define CFISCSI_SESSION_DEBUG(S, X, ...) \ 122265505Strasz do { \ 123265505Strasz if (debug > 1) { \ 124265505Strasz printf("%s: %s (%s): " X "\n", \ 125265505Strasz __func__, S->cs_initiator_addr, \ 126265505Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 127265505Strasz } \ 128255570Strasz } while (0) 129255570Strasz 130265505Strasz#define CFISCSI_SESSION_WARN(S, X, ...) \ 131265505Strasz do { \ 132265505Strasz if (debug > 0) { \ 133265505Strasz printf("WARNING: %s (%s): " X "\n", \ 134265505Strasz S->cs_initiator_addr, \ 135265505Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 136265505Strasz } \ 137255570Strasz } while (0) 138255570Strasz 139255570Strasz#define CFISCSI_SESSION_LOCK(X) mtx_lock(&X->cs_lock) 140255570Strasz#define CFISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->cs_lock) 141255570Strasz#define CFISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->cs_lock, MA_OWNED) 142255570Strasz 143255570Strasz#define CONN_SESSION(X) ((struct cfiscsi_session *)(X)->ic_prv0) 144255570Strasz#define PDU_SESSION(X) CONN_SESSION((X)->ip_conn) 145255570Strasz#define PDU_EXPDATASN(X) (X)->ip_prv0 146255570Strasz#define PDU_TOTAL_TRANSFER_LEN(X) (X)->ip_prv1 147255570Strasz#define PDU_R2TSN(X) (X)->ip_prv2 148255570Strasz 149255570Straszint cfiscsi_init(void); 150255570Straszstatic void cfiscsi_online(void *arg); 151255570Straszstatic void cfiscsi_offline(void *arg); 152255570Straszstatic int cfiscsi_lun_enable(void *arg, 153255570Strasz struct ctl_id target_id, int lun_id); 154255570Straszstatic int cfiscsi_lun_disable(void *arg, 155255570Strasz struct ctl_id target_id, int lun_id); 156255570Straszstatic int cfiscsi_ioctl(struct cdev *dev, 157255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td); 158255570Straszstatic int cfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len); 159255570Straszstatic void cfiscsi_datamove(union ctl_io *io); 160255570Straszstatic void cfiscsi_done(union ctl_io *io); 161255570Straszstatic uint32_t cfiscsi_map_lun(void *arg, uint32_t lun); 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); 186255570Strasz 187255570Straszstatic struct icl_pdu * 188255570Straszcfiscsi_pdu_new_response(struct icl_pdu *request, int flags) 189255570Strasz{ 190255570Strasz 191255570Strasz return (icl_pdu_new_bhs(request->ip_conn, flags)); 192255570Strasz} 193255570Strasz 194255848Straszstatic bool 195255570Straszcfiscsi_pdu_update_cmdsn(const struct icl_pdu *request) 196255570Strasz{ 197255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 198255570Strasz struct cfiscsi_session *cs; 199255570Strasz uint32_t cmdsn, expstatsn; 200255570Strasz 201255570Strasz cs = PDU_SESSION(request); 202255570Strasz 203255570Strasz /* 204255570Strasz * Every incoming PDU - not just NOP-Out - resets the ping timer. 205255570Strasz * The purpose of the timeout is to reset the connection when it stalls; 206255570Strasz * we don't want this to happen when NOP-In or NOP-Out ends up delayed 207255570Strasz * in some queue. 208255570Strasz * 209255570Strasz * XXX: Locking? 210255570Strasz */ 211255570Strasz cs->cs_timeout = 0; 212255570Strasz 213255570Strasz /* 214255570Strasz * Data-Out PDUs don't contain CmdSN. 215255570Strasz */ 216255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 217255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 218255848Strasz return (false); 219255570Strasz 220255570Strasz /* 221255570Strasz * We're only using fields common for all the request 222255570Strasz * (initiator -> target) PDUs. 223255570Strasz */ 224255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 225255570Strasz cmdsn = ntohl(bhssc->bhssc_cmdsn); 226255570Strasz expstatsn = ntohl(bhssc->bhssc_expstatsn); 227255570Strasz 228255570Strasz CFISCSI_SESSION_LOCK(cs); 229255570Strasz#if 0 230255570Strasz if (expstatsn != cs->cs_statsn) { 231255570Strasz CFISCSI_SESSION_DEBUG(cs, "received PDU with ExpStatSN %d, " 232255570Strasz "while current StatSN is %d", expstatsn, 233255570Strasz cs->cs_statsn); 234255570Strasz } 235255570Strasz#endif 236255570Strasz 237255570Strasz /* 238255848Strasz * The target MUST silently ignore any non-immediate command outside 239255848Strasz * of this range. 240255570Strasz */ 241255848Strasz if (cmdsn < cs->cs_cmdsn || cmdsn > cs->cs_cmdsn + maxcmdsn_delta) { 242255848Strasz CFISCSI_SESSION_UNLOCK(cs); 243255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with CmdSN %d, " 244255570Strasz "while expected CmdSN was %d", cmdsn, cs->cs_cmdsn); 245255848Strasz return (true); 246255570Strasz } 247255570Strasz 248255570Strasz if ((request->ip_bhs->bhs_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 249255570Strasz cs->cs_cmdsn++; 250255570Strasz 251255570Strasz CFISCSI_SESSION_UNLOCK(cs); 252255848Strasz 253255848Strasz return (false); 254255570Strasz} 255255570Strasz 256255570Straszstatic void 257255570Straszcfiscsi_pdu_handle(struct icl_pdu *request) 258255570Strasz{ 259255570Strasz struct cfiscsi_session *cs; 260255848Strasz bool ignore; 261255570Strasz 262255570Strasz cs = PDU_SESSION(request); 263255570Strasz 264255848Strasz ignore = cfiscsi_pdu_update_cmdsn(request); 265255848Strasz if (ignore) { 266255848Strasz icl_pdu_free(request); 267255848Strasz return; 268255848Strasz } 269255570Strasz 270255570Strasz /* 271255570Strasz * Handle the PDU; this includes e.g. receiving the remaining 272255570Strasz * part of PDU and submitting the SCSI command to CTL 273255570Strasz * or queueing a reply. The handling routine is responsible 274255570Strasz * for freeing the PDU when it's no longer needed. 275255570Strasz */ 276255570Strasz switch (request->ip_bhs->bhs_opcode & 277255570Strasz ~ISCSI_BHS_OPCODE_IMMEDIATE) { 278255570Strasz case ISCSI_BHS_OPCODE_NOP_OUT: 279255570Strasz cfiscsi_pdu_handle_nop_out(request); 280255570Strasz break; 281255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 282255570Strasz cfiscsi_pdu_handle_scsi_command(request); 283255570Strasz break; 284255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 285255570Strasz cfiscsi_pdu_handle_task_request(request); 286255570Strasz break; 287255570Strasz case ISCSI_BHS_OPCODE_SCSI_DATA_OUT: 288255570Strasz cfiscsi_pdu_handle_data_out(request); 289255570Strasz break; 290255570Strasz case ISCSI_BHS_OPCODE_LOGOUT_REQUEST: 291255570Strasz cfiscsi_pdu_handle_logout_request(request); 292255570Strasz break; 293255570Strasz default: 294255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with unsupported " 295255570Strasz "opcode 0x%x; dropping connection", 296255570Strasz request->ip_bhs->bhs_opcode); 297256197Strasz icl_pdu_free(request); 298255570Strasz cfiscsi_session_terminate(cs); 299255570Strasz } 300255570Strasz 301255570Strasz} 302255570Strasz 303255570Straszstatic void 304255570Straszcfiscsi_receive_callback(struct icl_pdu *request) 305255570Strasz{ 306255570Strasz struct cfiscsi_session *cs; 307255570Strasz 308255570Strasz cs = PDU_SESSION(request); 309255570Strasz 310255570Strasz#ifdef ICL_KERNEL_PROXY 311255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 312255570Strasz if (cs->cs_login_pdu == NULL) 313255570Strasz cs->cs_login_pdu = request; 314255570Strasz else 315255570Strasz icl_pdu_free(request); 316255570Strasz cv_signal(&cs->cs_login_cv); 317255570Strasz return; 318255570Strasz } 319255570Strasz#endif 320255570Strasz 321255570Strasz cfiscsi_pdu_handle(request); 322255570Strasz} 323255570Strasz 324255570Straszstatic void 325255570Straszcfiscsi_error_callback(struct icl_conn *ic) 326255570Strasz{ 327255570Strasz struct cfiscsi_session *cs; 328255570Strasz 329255570Strasz cs = CONN_SESSION(ic); 330255570Strasz 331255570Strasz CFISCSI_SESSION_WARN(cs, "connection error; dropping connection"); 332255570Strasz cfiscsi_session_terminate(cs); 333255570Strasz} 334255570Strasz 335255570Straszstatic int 336255570Straszcfiscsi_pdu_prepare(struct icl_pdu *response) 337255570Strasz{ 338255570Strasz struct cfiscsi_session *cs; 339255570Strasz struct iscsi_bhs_scsi_response *bhssr; 340255570Strasz bool advance_statsn = true; 341255570Strasz 342255570Strasz cs = PDU_SESSION(response); 343255570Strasz 344255570Strasz CFISCSI_SESSION_LOCK_ASSERT(cs); 345255570Strasz 346255570Strasz /* 347255570Strasz * We're only using fields common for all the response 348255570Strasz * (target -> initiator) PDUs. 349255570Strasz */ 350255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 351255570Strasz 352255570Strasz /* 353255570Strasz * 10.8.3: "The StatSN for this connection is not advanced 354255570Strasz * after this PDU is sent." 355255570Strasz */ 356255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_R2T) 357255570Strasz advance_statsn = false; 358255570Strasz 359255570Strasz /* 360255570Strasz * 10.19.2: "However, when the Initiator Task Tag is set to 0xffffffff, 361255570Strasz * StatSN for the connection is not advanced after this PDU is sent." 362255570Strasz */ 363255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_NOP_IN && 364255570Strasz bhssr->bhssr_initiator_task_tag == 0xffffffff) 365255570Strasz advance_statsn = false; 366255570Strasz 367255570Strasz /* 368255570Strasz * See the comment below - StatSN is not meaningful and must 369255570Strasz * not be advanced. 370255570Strasz */ 371255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_SCSI_DATA_IN) 372255570Strasz advance_statsn = false; 373255570Strasz 374255570Strasz /* 375255570Strasz * 10.7.3: "The fields StatSN, Status, and Residual Count 376255570Strasz * only have meaningful content if the S bit is set to 1." 377255570Strasz */ 378255570Strasz if (bhssr->bhssr_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN) 379255570Strasz bhssr->bhssr_statsn = htonl(cs->cs_statsn); 380255570Strasz bhssr->bhssr_expcmdsn = htonl(cs->cs_cmdsn); 381255570Strasz bhssr->bhssr_maxcmdsn = htonl(cs->cs_cmdsn + maxcmdsn_delta); 382255570Strasz 383255570Strasz if (advance_statsn) 384255570Strasz cs->cs_statsn++; 385255570Strasz 386255570Strasz return (0); 387255570Strasz} 388255570Strasz 389255570Straszstatic void 390255570Straszcfiscsi_pdu_queue(struct icl_pdu *response) 391255570Strasz{ 392255570Strasz struct cfiscsi_session *cs; 393255570Strasz 394255570Strasz cs = PDU_SESSION(response); 395255570Strasz 396255570Strasz CFISCSI_SESSION_LOCK(cs); 397255570Strasz cfiscsi_pdu_prepare(response); 398255570Strasz icl_pdu_queue(response); 399255570Strasz CFISCSI_SESSION_UNLOCK(cs); 400255570Strasz} 401255570Strasz 402255570Straszstatic uint32_t 403255570Straszcfiscsi_decode_lun(uint64_t encoded) 404255570Strasz{ 405255570Strasz uint8_t lun[8]; 406255570Strasz uint32_t result; 407255570Strasz 408255570Strasz /* 409255570Strasz * The LUN field in iSCSI PDUs may look like an ordinary 64 bit number, 410255570Strasz * but is in fact an evil, multidimensional structure defined 411255570Strasz * in SCSI Architecture Model 5 (SAM-5), section 4.6. 412255570Strasz */ 413255570Strasz memcpy(lun, &encoded, sizeof(lun)); 414255570Strasz switch (lun[0] & 0xC0) { 415255570Strasz case 0x00: 416255570Strasz if ((lun[0] & 0x3f) != 0 || lun[2] != 0 || lun[3] != 0 || 417255570Strasz lun[4] != 0 || lun[5] != 0 || lun[6] != 0 || lun[7] != 0) { 418255570Strasz CFISCSI_WARN("malformed LUN " 419255570Strasz "(peripheral device addressing method): 0x%jx", 420255570Strasz (uintmax_t)encoded); 421255570Strasz result = 0xffffffff; 422255570Strasz break; 423255570Strasz } 424255570Strasz result = lun[1]; 425255570Strasz break; 426255570Strasz case 0x40: 427255570Strasz if (lun[2] != 0 || lun[3] != 0 || lun[4] != 0 || lun[5] != 0 || 428255570Strasz lun[6] != 0 || lun[7] != 0) { 429255570Strasz CFISCSI_WARN("malformed LUN " 430255570Strasz "(flat address space addressing method): 0x%jx", 431255570Strasz (uintmax_t)encoded); 432255570Strasz result = 0xffffffff; 433255570Strasz break; 434255570Strasz } 435255570Strasz result = ((lun[0] & 0x3f) << 8) + lun[1]; 436255570Strasz break; 437255570Strasz case 0xC0: 438255570Strasz if (lun[0] != 0xD2 || lun[4] != 0 || lun[5] != 0 || 439255570Strasz lun[6] != 0 || lun[7] != 0) { 440255570Strasz CFISCSI_WARN("malformed LUN (extended flat " 441255570Strasz "address space addressing method): 0x%jx", 442255570Strasz (uintmax_t)encoded); 443255570Strasz result = 0xffffffff; 444255570Strasz break; 445255570Strasz } 446255570Strasz result = (lun[1] << 16) + (lun[2] << 8) + lun[3]; 447255570Strasz default: 448255570Strasz CFISCSI_WARN("unsupported LUN format 0x%jx", 449255570Strasz (uintmax_t)encoded); 450255570Strasz result = 0xffffffff; 451255570Strasz break; 452255570Strasz } 453255570Strasz 454255570Strasz return (result); 455255570Strasz} 456255570Strasz 457255570Straszstatic void 458255570Straszcfiscsi_pdu_handle_nop_out(struct icl_pdu *request) 459255570Strasz{ 460255570Strasz struct cfiscsi_session *cs; 461255570Strasz struct iscsi_bhs_nop_out *bhsno; 462255570Strasz struct iscsi_bhs_nop_in *bhsni; 463255570Strasz struct icl_pdu *response; 464256187Strasz void *data = NULL; 465256187Strasz size_t datasize; 466256187Strasz int error; 467255570Strasz 468255570Strasz cs = PDU_SESSION(request); 469255570Strasz bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 470255570Strasz 471255570Strasz if (bhsno->bhsno_initiator_task_tag == 0xffffffff) { 472255570Strasz /* 473255570Strasz * Nothing to do, iscsi_pdu_update_statsn() already 474255570Strasz * zeroed the timeout. 475255570Strasz */ 476255570Strasz icl_pdu_free(request); 477255570Strasz return; 478255570Strasz } 479255570Strasz 480256187Strasz datasize = icl_pdu_data_segment_length(request); 481256187Strasz if (datasize > 0) { 482256187Strasz data = malloc(datasize, M_CFISCSI, M_NOWAIT | M_ZERO); 483256187Strasz if (data == NULL) { 484256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 485256187Strasz "dropping connection"); 486256187Strasz icl_pdu_free(request); 487256187Strasz cfiscsi_session_terminate(cs); 488256187Strasz return; 489256187Strasz } 490256187Strasz icl_pdu_get_data(request, 0, data, datasize); 491256187Strasz } 492256187Strasz 493255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 494255570Strasz if (response == NULL) { 495256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 496256187Strasz "droppping connection"); 497256187Strasz free(data, M_CFISCSI); 498255570Strasz icl_pdu_free(request); 499256187Strasz cfiscsi_session_terminate(cs); 500255570Strasz return; 501255570Strasz } 502255570Strasz bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 503255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 504255570Strasz bhsni->bhsni_flags = 0x80; 505255570Strasz bhsni->bhsni_initiator_task_tag = bhsno->bhsno_initiator_task_tag; 506255570Strasz bhsni->bhsni_target_transfer_tag = 0xffffffff; 507256187Strasz if (datasize > 0) { 508256187Strasz error = icl_pdu_append_data(response, data, datasize, M_NOWAIT); 509256187Strasz if (error != 0) { 510256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 511256187Strasz "dropping connection"); 512256187Strasz free(data, M_CFISCSI); 513256187Strasz icl_pdu_free(request); 514256187Strasz icl_pdu_free(response); 515256187Strasz cfiscsi_session_terminate(cs); 516256187Strasz return; 517256187Strasz } 518256187Strasz free(data, M_CFISCSI); 519256187Strasz } 520255570Strasz 521255570Strasz icl_pdu_free(request); 522255570Strasz cfiscsi_pdu_queue(response); 523255570Strasz} 524255570Strasz 525255570Straszstatic void 526255570Straszcfiscsi_pdu_handle_scsi_command(struct icl_pdu *request) 527255570Strasz{ 528255570Strasz struct iscsi_bhs_scsi_command *bhssc; 529255570Strasz struct cfiscsi_session *cs; 530255570Strasz union ctl_io *io; 531255570Strasz int error; 532255570Strasz 533255570Strasz cs = PDU_SESSION(request); 534255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 535255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 536255570Strasz // bhssc->bhssc_initiator_task_tag); 537255570Strasz 538255570Strasz if (request->ip_data_len > 0 && cs->cs_immediate_data == false) { 539255570Strasz CFISCSI_SESSION_WARN(cs, "unsolicited data with " 540255570Strasz "ImmediateData=No; dropping connection"); 541256197Strasz icl_pdu_free(request); 542255570Strasz cfiscsi_session_terminate(cs); 543255570Strasz return; 544255570Strasz } 545268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 546255570Strasz if (io == NULL) { 547256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io; " 548256197Strasz "dropping connection"); 549255570Strasz icl_pdu_free(request); 550256197Strasz cfiscsi_session_terminate(cs); 551255570Strasz return; 552255570Strasz } 553255570Strasz ctl_zero_io(io); 554255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 555255570Strasz io->io_hdr.io_type = CTL_IO_SCSI; 556255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 557268682Smav io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 558255570Strasz io->io_hdr.nexus.targ_target.id = 0; 559255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhssc->bhssc_lun); 560255570Strasz io->io_hdr.nexus.lun_map_fn = cfiscsi_map_lun; 561255570Strasz io->io_hdr.nexus.lun_map_arg = cs; 562255570Strasz io->scsiio.tag_num = bhssc->bhssc_initiator_task_tag; 563255570Strasz switch ((bhssc->bhssc_flags & BHSSC_FLAGS_ATTR)) { 564255570Strasz case BHSSC_FLAGS_ATTR_UNTAGGED: 565255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 566255570Strasz break; 567255570Strasz case BHSSC_FLAGS_ATTR_SIMPLE: 568255570Strasz io->scsiio.tag_type = CTL_TAG_SIMPLE; 569255570Strasz break; 570255570Strasz case BHSSC_FLAGS_ATTR_ORDERED: 571255570Strasz io->scsiio.tag_type = CTL_TAG_ORDERED; 572255570Strasz break; 573255570Strasz case BHSSC_FLAGS_ATTR_HOQ: 574255570Strasz io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 575255570Strasz break; 576255570Strasz case BHSSC_FLAGS_ATTR_ACA: 577255570Strasz io->scsiio.tag_type = CTL_TAG_ACA; 578255570Strasz break; 579255570Strasz default: 580255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 581255570Strasz CFISCSI_SESSION_WARN(cs, "unhandled tag type %d", 582255570Strasz bhssc->bhssc_flags & BHSSC_FLAGS_ATTR); 583255570Strasz break; 584255570Strasz } 585255570Strasz io->scsiio.cdb_len = sizeof(bhssc->bhssc_cdb); /* Which is 16. */ 586255570Strasz memcpy(io->scsiio.cdb, bhssc->bhssc_cdb, sizeof(bhssc->bhssc_cdb)); 587255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 588255570Strasz error = ctl_queue(io); 589255570Strasz if (error != CTL_RETVAL_COMPLETE) { 590256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 591256197Strasz "dropping connection", error); 592255570Strasz ctl_free_io(io); 593255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 594255570Strasz icl_pdu_free(request); 595256197Strasz cfiscsi_session_terminate(cs); 596255570Strasz } 597255570Strasz} 598255570Strasz 599255570Straszstatic void 600255570Straszcfiscsi_pdu_handle_task_request(struct icl_pdu *request) 601255570Strasz{ 602255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 603255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 604255570Strasz struct icl_pdu *response; 605255570Strasz struct cfiscsi_session *cs; 606255570Strasz union ctl_io *io; 607255570Strasz int error; 608255570Strasz 609255570Strasz cs = PDU_SESSION(request); 610255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 611268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 612255570Strasz if (io == NULL) { 613256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io;" 614256197Strasz "dropping connection"); 615255570Strasz icl_pdu_free(request); 616256197Strasz cfiscsi_session_terminate(cs); 617255570Strasz return; 618255570Strasz } 619255570Strasz ctl_zero_io(io); 620255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 621255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 622255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 623268682Smav io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 624255570Strasz io->io_hdr.nexus.targ_target.id = 0; 625255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhstmr->bhstmr_lun); 626255570Strasz io->io_hdr.nexus.lun_map_fn = cfiscsi_map_lun; 627255570Strasz io->io_hdr.nexus.lun_map_arg = cs; 628255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 629255570Strasz 630255570Strasz switch (bhstmr->bhstmr_function & ~0x80) { 631255570Strasz case BHSTMR_FUNCTION_ABORT_TASK: 632255570Strasz#if 0 633255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK"); 634255570Strasz#endif 635255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 636255570Strasz io->taskio.tag_num = bhstmr->bhstmr_referenced_task_tag; 637255570Strasz break; 638255570Strasz case BHSTMR_FUNCTION_LOGICAL_UNIT_RESET: 639255570Strasz#if 0 640255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_LOGICAL_UNIT_RESET"); 641255570Strasz#endif 642255570Strasz io->taskio.task_action = CTL_TASK_LUN_RESET; 643255570Strasz break; 644264602Strasz case BHSTMR_FUNCTION_TARGET_WARM_RESET: 645255570Strasz#if 0 646264602Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_TARGET_WARM_RESET"); 647255570Strasz#endif 648264602Strasz io->taskio.task_action = CTL_TASK_TARGET_RESET; 649255570Strasz break; 650255570Strasz default: 651255570Strasz CFISCSI_SESSION_DEBUG(cs, "unsupported function 0x%x", 652255570Strasz bhstmr->bhstmr_function & ~0x80); 653255570Strasz ctl_free_io(io); 654255570Strasz 655255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 656255570Strasz if (response == NULL) { 657256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 658256197Strasz "dropping connection"); 659255570Strasz icl_pdu_free(request); 660256197Strasz cfiscsi_session_terminate(cs); 661255570Strasz return; 662255570Strasz } 663255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 664255570Strasz response->ip_bhs; 665255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 666255570Strasz bhstmr2->bhstmr_flags = 0x80; 667255570Strasz bhstmr2->bhstmr_response = 668255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 669255570Strasz bhstmr2->bhstmr_initiator_task_tag = 670255570Strasz bhstmr->bhstmr_initiator_task_tag; 671255570Strasz icl_pdu_free(request); 672255570Strasz cfiscsi_pdu_queue(response); 673255570Strasz return; 674255570Strasz } 675255570Strasz 676255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 677255570Strasz error = ctl_queue(io); 678255570Strasz if (error != CTL_RETVAL_COMPLETE) { 679256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 680256197Strasz "dropping connection", error); 681255570Strasz ctl_free_io(io); 682255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 683255570Strasz icl_pdu_free(request); 684256197Strasz cfiscsi_session_terminate(cs); 685255570Strasz } 686255570Strasz} 687255570Strasz 688255570Straszstatic bool 689255570Straszcfiscsi_handle_data_segment(struct icl_pdu *request, struct cfiscsi_data_wait *cdw) 690255570Strasz{ 691255570Strasz struct iscsi_bhs_data_out *bhsdo; 692255570Strasz struct cfiscsi_session *cs; 693255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 694256195Strasz size_t copy_len, len, off, buffer_offset; 695255570Strasz int ctl_sg_count; 696255570Strasz union ctl_io *io; 697255570Strasz 698255570Strasz cs = PDU_SESSION(request); 699255570Strasz 700255570Strasz KASSERT((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 701255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT || 702255570Strasz (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 703255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 704255570Strasz ("bad opcode 0x%x", request->ip_bhs->bhs_opcode)); 705255570Strasz 706255570Strasz /* 707265640Smav * We're only using fields common for Data-Out and SCSI Command PDUs. 708255570Strasz */ 709255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 710255570Strasz 711255570Strasz io = cdw->cdw_ctl_io; 712255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 713255570Strasz ("CTL_FLAG_DATA_IN")); 714255570Strasz 715255570Strasz#if 0 716255570Strasz CFISCSI_SESSION_DEBUG(cs, "received %zd bytes out of %d", 717255570Strasz request->ip_data_len, io->scsiio.kern_total_len); 718255570Strasz#endif 719255570Strasz 720255570Strasz if (io->scsiio.kern_sg_entries > 0) { 721255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 722255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 723255570Strasz } else { 724255570Strasz ctl_sglist = &ctl_sg_entry; 725255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 726255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 727255570Strasz ctl_sg_count = 1; 728255570Strasz } 729255570Strasz 730255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 731255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 732255570Strasz buffer_offset = ntohl(bhsdo->bhsdo_buffer_offset); 733255570Strasz else 734255570Strasz buffer_offset = 0; 735268141Smav len = icl_pdu_data_segment_length(request); 736255570Strasz 737255570Strasz /* 738255570Strasz * Make sure the offset, as sent by the initiator, matches the offset 739255570Strasz * we're supposed to be at in the scatter-gather list. 740255570Strasz */ 741268141Smav if (buffer_offset > 742268141Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled || 743268141Smav buffer_offset + len <= 744265640Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled) { 745255570Strasz CFISCSI_SESSION_WARN(cs, "received bad buffer offset %zd, " 746265640Smav "expected %zd; dropping connection", buffer_offset, 747265640Smav (size_t)io->scsiio.kern_rel_offset + 748255570Strasz (size_t)io->scsiio.ext_data_filled); 749265640Smav ctl_set_data_phase_error(&io->scsiio); 750255570Strasz cfiscsi_session_terminate(cs); 751255570Strasz return (true); 752255570Strasz } 753255570Strasz 754256195Strasz /* 755256195Strasz * This is the offset within the PDU data segment, as opposed 756256195Strasz * to buffer_offset, which is the offset within the task (SCSI 757256195Strasz * command). 758256195Strasz */ 759268141Smav off = io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled - 760268141Smav buffer_offset; 761256195Strasz 762256195Strasz /* 763256195Strasz * Iterate over the scatter/gather segments, filling them with data 764256195Strasz * from the PDU data segment. Note that this can get called multiple 765256195Strasz * times for one SCSI command; the cdw structure holds state for the 766256195Strasz * scatter/gather list. 767256195Strasz */ 768255570Strasz for (;;) { 769255570Strasz KASSERT(cdw->cdw_sg_index < ctl_sg_count, 770255570Strasz ("cdw->cdw_sg_index >= ctl_sg_count")); 771255570Strasz if (cdw->cdw_sg_len == 0) { 772255570Strasz cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 773255570Strasz cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 774255570Strasz } 775256195Strasz KASSERT(off <= len, ("len > off")); 776256195Strasz copy_len = len - off; 777255570Strasz if (copy_len > cdw->cdw_sg_len) 778255570Strasz copy_len = cdw->cdw_sg_len; 779255570Strasz 780255570Strasz icl_pdu_get_data(request, off, cdw->cdw_sg_addr, copy_len); 781255570Strasz cdw->cdw_sg_addr += copy_len; 782255570Strasz cdw->cdw_sg_len -= copy_len; 783255570Strasz off += copy_len; 784255570Strasz io->scsiio.ext_data_filled += copy_len; 785255570Strasz 786255570Strasz if (cdw->cdw_sg_len == 0) { 787256195Strasz /* 788256195Strasz * End of current segment. 789256195Strasz */ 790256195Strasz if (cdw->cdw_sg_index == ctl_sg_count - 1) { 791256195Strasz /* 792256195Strasz * Last segment in scatter/gather list. 793256195Strasz */ 794255570Strasz break; 795256195Strasz } 796255570Strasz cdw->cdw_sg_index++; 797255570Strasz } 798256195Strasz 799256195Strasz if (off == len) { 800256195Strasz /* 801256195Strasz * End of PDU payload. 802256195Strasz */ 803255570Strasz break; 804256195Strasz } 805255570Strasz } 806255570Strasz 807256195Strasz if (len > off) { 808265640Smav /* 809265640Smav * In case of unsolicited data, it's possible that the buffer 810265640Smav * provided by CTL is smaller than negotiated FirstBurstLength. 811265640Smav * Just ignore the superfluous data; will ask for them with R2T 812265640Smav * on next call to cfiscsi_datamove(). 813265640Smav * 814265640Smav * This obviously can only happen with SCSI Command PDU. 815265640Smav */ 816265640Smav if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 817268141Smav ISCSI_BHS_OPCODE_SCSI_COMMAND) 818265640Smav return (true); 819265640Smav 820255570Strasz CFISCSI_SESSION_WARN(cs, "received too much data: got %zd bytes, " 821265640Smav "expected %zd; dropping connection", 822265640Smav icl_pdu_data_segment_length(request), off); 823265640Smav ctl_set_data_phase_error(&io->scsiio); 824255570Strasz cfiscsi_session_terminate(cs); 825255570Strasz return (true); 826255570Strasz } 827255570Strasz 828265640Smav if (io->scsiio.ext_data_filled == io->scsiio.kern_data_len && 829265640Smav (bhsdo->bhsdo_flags & BHSDO_FLAGS_F) == 0) { 830265640Smav CFISCSI_SESSION_WARN(cs, "got the final packet without " 831265640Smav "the F flag; flags = 0x%x; dropping connection", 832265640Smav bhsdo->bhsdo_flags); 833265640Smav ctl_set_data_phase_error(&io->scsiio); 834265640Smav cfiscsi_session_terminate(cs); 835265640Smav return (true); 836265640Smav } 837265640Smav 838265640Smav if (io->scsiio.ext_data_filled != io->scsiio.kern_data_len && 839265640Smav (bhsdo->bhsdo_flags & BHSDO_FLAGS_F) != 0) { 840265640Smav if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 841265640Smav ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 842265640Smav CFISCSI_SESSION_WARN(cs, "got the final packet, but the " 843265640Smav "transmitted size was %zd bytes instead of %d; " 844265640Smav "dropping connection", 845265640Smav (size_t)io->scsiio.ext_data_filled, 846265640Smav io->scsiio.kern_data_len); 847265640Smav ctl_set_data_phase_error(&io->scsiio); 848255570Strasz cfiscsi_session_terminate(cs); 849255570Strasz return (true); 850265640Smav } else { 851265640Smav /* 852265640Smav * For SCSI Command PDU, this just means we need to 853265640Smav * solicit more data by sending R2T. 854265640Smav */ 855265640Smav return (false); 856255570Strasz } 857265640Smav } 858255570Strasz 859265640Smav if (io->scsiio.ext_data_filled == io->scsiio.kern_data_len) { 860255570Strasz#if 0 861255570Strasz CFISCSI_SESSION_DEBUG(cs, "no longer expecting Data-Out with target " 862255570Strasz "transfer tag 0x%x", cdw->cdw_target_transfer_tag); 863255570Strasz#endif 864255570Strasz 865255570Strasz return (true); 866255570Strasz } 867255570Strasz 868255570Strasz return (false); 869255570Strasz} 870255570Strasz 871255570Straszstatic void 872255570Straszcfiscsi_pdu_handle_data_out(struct icl_pdu *request) 873255570Strasz{ 874255570Strasz struct iscsi_bhs_data_out *bhsdo; 875255570Strasz struct cfiscsi_session *cs; 876255570Strasz struct cfiscsi_data_wait *cdw = NULL; 877255570Strasz union ctl_io *io; 878255570Strasz bool done; 879255570Strasz 880255570Strasz cs = PDU_SESSION(request); 881255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 882255570Strasz 883255570Strasz CFISCSI_SESSION_LOCK(cs); 884255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) { 885255570Strasz#if 0 886255570Strasz CFISCSI_SESSION_DEBUG(cs, "have ttt 0x%x, itt 0x%x; looking for " 887255570Strasz "ttt 0x%x, itt 0x%x", 888255570Strasz bhsdo->bhsdo_target_transfer_tag, 889255570Strasz bhsdo->bhsdo_initiator_task_tag, 890255570Strasz cdw->cdw_target_transfer_tag, cdw->cdw_initiator_task_tag)); 891255570Strasz#endif 892255570Strasz if (bhsdo->bhsdo_target_transfer_tag == 893255570Strasz cdw->cdw_target_transfer_tag) 894255570Strasz break; 895255570Strasz } 896255570Strasz CFISCSI_SESSION_UNLOCK(cs); 897255570Strasz if (cdw == NULL) { 898255570Strasz CFISCSI_SESSION_WARN(cs, "data transfer tag 0x%x, initiator task tag " 899256197Strasz "0x%x, not found; dropping connection", 900256197Strasz bhsdo->bhsdo_target_transfer_tag, bhsdo->bhsdo_initiator_task_tag); 901255570Strasz icl_pdu_free(request); 902255570Strasz cfiscsi_session_terminate(cs); 903255570Strasz return; 904255570Strasz } 905255570Strasz 906255570Strasz io = cdw->cdw_ctl_io; 907255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 908255570Strasz ("CTL_FLAG_DATA_IN")); 909255570Strasz 910255570Strasz done = cfiscsi_handle_data_segment(request, cdw); 911255570Strasz if (done) { 912255570Strasz CFISCSI_SESSION_LOCK(cs); 913255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 914255570Strasz CFISCSI_SESSION_UNLOCK(cs); 915255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 916255570Strasz io->scsiio.be_move_done(io); 917255570Strasz } 918255570Strasz 919255570Strasz icl_pdu_free(request); 920255570Strasz} 921255570Strasz 922255570Straszstatic void 923255570Straszcfiscsi_pdu_handle_logout_request(struct icl_pdu *request) 924255570Strasz{ 925255570Strasz struct iscsi_bhs_logout_request *bhslr; 926255570Strasz struct iscsi_bhs_logout_response *bhslr2; 927255570Strasz struct icl_pdu *response; 928255570Strasz struct cfiscsi_session *cs; 929255570Strasz 930255570Strasz cs = PDU_SESSION(request); 931255570Strasz bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 932255570Strasz switch (bhslr->bhslr_reason & 0x7f) { 933255570Strasz case BHSLR_REASON_CLOSE_SESSION: 934255570Strasz case BHSLR_REASON_CLOSE_CONNECTION: 935255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 936255570Strasz if (response == NULL) { 937256197Strasz CFISCSI_SESSION_DEBUG(cs, "failed to allocate memory"); 938255570Strasz icl_pdu_free(request); 939255570Strasz cfiscsi_session_terminate(cs); 940255570Strasz return; 941255570Strasz } 942255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 943255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 944255570Strasz bhslr2->bhslr_flags = 0x80; 945255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_CLOSED_SUCCESSFULLY; 946255570Strasz bhslr2->bhslr_initiator_task_tag = 947255570Strasz bhslr->bhslr_initiator_task_tag; 948255570Strasz icl_pdu_free(request); 949255570Strasz cfiscsi_pdu_queue(response); 950255570Strasz cfiscsi_session_terminate(cs); 951255570Strasz break; 952255570Strasz case BHSLR_REASON_REMOVE_FOR_RECOVERY: 953255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 954255570Strasz if (response == NULL) { 955256197Strasz CFISCSI_SESSION_WARN(cs, 956256197Strasz "failed to allocate memory; dropping connection"); 957255570Strasz icl_pdu_free(request); 958255570Strasz cfiscsi_session_terminate(cs); 959255570Strasz return; 960255570Strasz } 961255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 962255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 963255570Strasz bhslr2->bhslr_flags = 0x80; 964255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_RECOVERY_NOT_SUPPORTED; 965255570Strasz bhslr2->bhslr_initiator_task_tag = 966255570Strasz bhslr->bhslr_initiator_task_tag; 967255570Strasz icl_pdu_free(request); 968255570Strasz cfiscsi_pdu_queue(response); 969255570Strasz break; 970255570Strasz default: 971255570Strasz CFISCSI_SESSION_WARN(cs, "invalid reason 0%x; dropping connection", 972255570Strasz bhslr->bhslr_reason); 973255570Strasz icl_pdu_free(request); 974255570Strasz cfiscsi_session_terminate(cs); 975255570Strasz break; 976255570Strasz } 977255570Strasz} 978255570Strasz 979255570Straszstatic void 980255570Straszcfiscsi_callout(void *context) 981255570Strasz{ 982255570Strasz struct icl_pdu *cp; 983255570Strasz struct iscsi_bhs_nop_in *bhsni; 984255570Strasz struct cfiscsi_session *cs; 985255570Strasz 986255570Strasz cs = context; 987255570Strasz 988255570Strasz if (cs->cs_terminating) 989255570Strasz return; 990255570Strasz 991255570Strasz callout_schedule(&cs->cs_callout, 1 * hz); 992255570Strasz 993265497Strasz atomic_add_int(&cs->cs_timeout, 1); 994255570Strasz 995255570Strasz#ifdef ICL_KERNEL_PROXY 996255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 997255570Strasz if (cs->cs_timeout > login_timeout) { 998255570Strasz CFISCSI_SESSION_WARN(cs, "login timed out after " 999255570Strasz "%d seconds; dropping connection", cs->cs_timeout); 1000255570Strasz cfiscsi_session_terminate(cs); 1001255570Strasz } 1002255570Strasz return; 1003255570Strasz } 1004255570Strasz#endif 1005255570Strasz 1006255570Strasz if (cs->cs_timeout >= ping_timeout) { 1007255570Strasz CFISCSI_SESSION_WARN(cs, "no ping reply (NOP-Out) after %d seconds; " 1008255570Strasz "dropping connection", ping_timeout); 1009255570Strasz cfiscsi_session_terminate(cs); 1010255570Strasz return; 1011255570Strasz } 1012255570Strasz 1013255570Strasz /* 1014255570Strasz * If the ping was reset less than one second ago - which means 1015255570Strasz * that we've received some PDU during the last second - assume 1016255570Strasz * the traffic flows correctly and don't bother sending a NOP-Out. 1017255570Strasz * 1018255570Strasz * (It's 2 - one for one second, and one for incrementing is_timeout 1019255570Strasz * earlier in this routine.) 1020255570Strasz */ 1021255570Strasz if (cs->cs_timeout < 2) 1022255570Strasz return; 1023255570Strasz 1024255824Strasz cp = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1025255824Strasz if (cp == NULL) { 1026256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory"); 1027255824Strasz return; 1028255824Strasz } 1029255570Strasz bhsni = (struct iscsi_bhs_nop_in *)cp->ip_bhs; 1030255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 1031255570Strasz bhsni->bhsni_flags = 0x80; 1032255570Strasz bhsni->bhsni_initiator_task_tag = 0xffffffff; 1033255570Strasz 1034255570Strasz cfiscsi_pdu_queue(cp); 1035255570Strasz} 1036255570Strasz 1037255570Straszstatic void 1038255570Straszcfiscsi_session_terminate_tasks(struct cfiscsi_session *cs) 1039255570Strasz{ 1040255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 1041255570Strasz union ctl_io *io; 1042268259Smav int error, last; 1043255570Strasz 1044255570Strasz#ifdef notyet 1045268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 1046255570Strasz if (io == NULL) { 1047255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 1048255570Strasz return; 1049255570Strasz } 1050255570Strasz ctl_zero_io(io); 1051255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 1052255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1053255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1054268682Smav io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 1055255570Strasz io->io_hdr.nexus.targ_target.id = 0; 1056255570Strasz io->io_hdr.nexus.targ_lun = lun; 1057255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1058255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK_SET; 1059255570Strasz error = ctl_queue(io); 1060255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1061255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1062255570Strasz ctl_free_io(io); 1063255570Strasz } 1064255570Strasz#else 1065255570Strasz /* 1066255570Strasz * CTL doesn't currently support CTL_TASK_ABORT_TASK_SET, so instead 1067255570Strasz * just iterate over tasks that are waiting for something - data - and 1068255570Strasz * terminate those. 1069255570Strasz */ 1070255570Strasz CFISCSI_SESSION_LOCK(cs); 1071255570Strasz TAILQ_FOREACH_SAFE(cdw, 1072255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 1073268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 1074255570Strasz if (io == NULL) { 1075255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 1076255570Strasz return; 1077255570Strasz } 1078255570Strasz ctl_zero_io(io); 1079255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 1080255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1081255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1082268682Smav io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 1083255570Strasz io->io_hdr.nexus.targ_target.id = 0; 1084255570Strasz //io->io_hdr.nexus.targ_lun = lun; /* Not needed? */ 1085255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1086255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 1087255570Strasz io->taskio.tag_num = cdw->cdw_initiator_task_tag; 1088255570Strasz error = ctl_queue(io); 1089255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1090255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1091255570Strasz ctl_free_io(io); 1092255570Strasz return; 1093255570Strasz } 1094255570Strasz#if 0 1095255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task tag " 1096255570Strasz "0x%x", cdw->cdw_initiator_task_tag); 1097255570Strasz#endif 1098268259Smav /* 1099268259Smav * Set nonzero port status; this prevents backends from 1100268259Smav * assuming that the data transfer actually succeeded 1101268259Smav * and writing uninitialized data to disk. 1102268259Smav */ 1103268259Smav cdw->cdw_ctl_io->scsiio.io_hdr.port_status = 42; 1104255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 1105255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 1106255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 1107255570Strasz } 1108255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1109255570Strasz#endif 1110268259Smav 1111268259Smav /* 1112268259Smav * Wait for CTL to terminate all the tasks. 1113268259Smav */ 1114268259Smav for (;;) { 1115268259Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1116268259Smav last = refcount_release(&cs->cs_outstanding_ctl_pdus); 1117268259Smav if (last != 0) 1118268259Smav break; 1119268259Smav CFISCSI_SESSION_WARN(cs, "waiting for CTL to terminate tasks, " 1120268259Smav "%d remaining", cs->cs_outstanding_ctl_pdus); 1121268259Smav pause("cfiscsi_terminate", 1); 1122268259Smav } 1123255570Strasz} 1124255570Strasz 1125255570Straszstatic void 1126255570Straszcfiscsi_maintenance_thread(void *arg) 1127255570Strasz{ 1128255570Strasz struct cfiscsi_session *cs; 1129255570Strasz 1130255570Strasz cs = arg; 1131255570Strasz 1132255570Strasz for (;;) { 1133255570Strasz CFISCSI_SESSION_LOCK(cs); 1134255570Strasz if (cs->cs_terminating == false) 1135255570Strasz cv_wait(&cs->cs_maintenance_cv, &cs->cs_lock); 1136255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1137255570Strasz 1138255570Strasz if (cs->cs_terminating) { 1139268259Smav 1140268259Smav /* 1141268259Smav * We used to wait up to 30 seconds to deliver queued 1142268259Smav * PDUs to the initiator. We also tried hard to deliver 1143268259Smav * SCSI Responses for the aborted PDUs. We don't do 1144268259Smav * that anymore. We might need to revisit that. 1145268259Smav */ 1146255570Strasz callout_drain(&cs->cs_callout); 1147255570Strasz icl_conn_shutdown(cs->cs_conn); 1148255570Strasz icl_conn_close(cs->cs_conn); 1149255570Strasz 1150255570Strasz /* 1151268259Smav * At this point ICL receive thread is no longer 1152268259Smav * running; no new tasks can be queued. 1153255570Strasz */ 1154268259Smav cfiscsi_session_terminate_tasks(cs); 1155255570Strasz cfiscsi_session_delete(cs); 1156255570Strasz kthread_exit(); 1157255570Strasz return; 1158255570Strasz } 1159255570Strasz CFISCSI_SESSION_DEBUG(cs, "nothing to do"); 1160255570Strasz } 1161255570Strasz} 1162255570Strasz 1163255570Straszstatic void 1164255570Straszcfiscsi_session_terminate(struct cfiscsi_session *cs) 1165255570Strasz{ 1166255570Strasz 1167268258Smav if (cs->cs_terminating) 1168255570Strasz return; 1169268258Smav cs->cs_terminating = true; 1170255570Strasz cv_signal(&cs->cs_maintenance_cv); 1171265510Strasz#ifdef ICL_KERNEL_PROXY 1172265510Strasz cv_signal(&cs->cs_login_cv); 1173265510Strasz#endif 1174255570Strasz} 1175255570Strasz 1176255570Straszstatic int 1177255570Straszcfiscsi_session_register_initiator(struct cfiscsi_session *cs) 1178255570Strasz{ 1179255570Strasz int error, i; 1180255570Strasz struct cfiscsi_softc *softc; 1181255570Strasz 1182255570Strasz KASSERT(cs->cs_ctl_initid == -1, ("already registered")); 1183255570Strasz 1184255570Strasz softc = &cfiscsi_softc; 1185255570Strasz 1186255570Strasz mtx_lock(&softc->lock); 1187255570Strasz for (i = 0; i < softc->max_initiators; i++) { 1188255570Strasz if (softc->ctl_initids[i] == 0) 1189255570Strasz break; 1190255570Strasz } 1191255570Strasz if (i == softc->max_initiators) { 1192255570Strasz CFISCSI_SESSION_WARN(cs, "too many concurrent sessions (%d)", 1193255570Strasz softc->max_initiators); 1194255570Strasz mtx_unlock(&softc->lock); 1195255570Strasz return (1); 1196255570Strasz } 1197255570Strasz softc->ctl_initids[i] = 1; 1198255570Strasz mtx_unlock(&softc->lock); 1199255570Strasz 1200255570Strasz#if 0 1201255570Strasz CFISCSI_SESSION_DEBUG(cs, "adding initiator id %d, max %d", 1202255570Strasz i, softc->max_initiators); 1203255570Strasz#endif 1204255570Strasz cs->cs_ctl_initid = i; 1205268682Smav error = ctl_add_initiator(0x0, cs->cs_target->ct_port.targ_port, cs->cs_ctl_initid); 1206255570Strasz if (error != 0) { 1207255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_add_initiator failed with error %d", error); 1208255570Strasz mtx_lock(&softc->lock); 1209255570Strasz softc->ctl_initids[cs->cs_ctl_initid] = 0; 1210255570Strasz mtx_unlock(&softc->lock); 1211255570Strasz cs->cs_ctl_initid = -1; 1212255570Strasz return (1); 1213255570Strasz } 1214255570Strasz 1215255570Strasz return (0); 1216255570Strasz} 1217255570Strasz 1218255570Straszstatic void 1219255570Straszcfiscsi_session_unregister_initiator(struct cfiscsi_session *cs) 1220255570Strasz{ 1221255570Strasz int error; 1222255570Strasz struct cfiscsi_softc *softc; 1223255570Strasz 1224255570Strasz if (cs->cs_ctl_initid == -1) 1225255570Strasz return; 1226255570Strasz 1227255570Strasz softc = &cfiscsi_softc; 1228255570Strasz 1229268682Smav error = ctl_remove_initiator(cs->cs_target->ct_port.targ_port, cs->cs_ctl_initid); 1230255570Strasz if (error != 0) { 1231255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_remove_initiator failed with error %d", 1232255570Strasz error); 1233255570Strasz } 1234255570Strasz mtx_lock(&softc->lock); 1235255570Strasz softc->ctl_initids[cs->cs_ctl_initid] = 0; 1236255570Strasz mtx_unlock(&softc->lock); 1237255570Strasz cs->cs_ctl_initid = -1; 1238255570Strasz} 1239255570Strasz 1240255570Straszstatic struct cfiscsi_session * 1241255570Straszcfiscsi_session_new(struct cfiscsi_softc *softc) 1242255570Strasz{ 1243255570Strasz struct cfiscsi_session *cs; 1244255570Strasz int error; 1245255570Strasz 1246255570Strasz cs = malloc(sizeof(*cs), M_CFISCSI, M_NOWAIT | M_ZERO); 1247255570Strasz if (cs == NULL) { 1248255570Strasz CFISCSI_WARN("malloc failed"); 1249255570Strasz return (NULL); 1250255570Strasz } 1251255570Strasz cs->cs_ctl_initid = -1; 1252255570Strasz 1253255570Strasz refcount_init(&cs->cs_outstanding_ctl_pdus, 0); 1254255570Strasz TAILQ_INIT(&cs->cs_waiting_for_data_out); 1255255570Strasz mtx_init(&cs->cs_lock, "cfiscsi_lock", NULL, MTX_DEF); 1256255570Strasz cv_init(&cs->cs_maintenance_cv, "cfiscsi_mt"); 1257255570Strasz#ifdef ICL_KERNEL_PROXY 1258255570Strasz cv_init(&cs->cs_login_cv, "cfiscsi_login"); 1259255570Strasz#endif 1260255570Strasz 1261265496Strasz cs->cs_conn = icl_conn_new("cfiscsi", &cs->cs_lock); 1262255570Strasz cs->cs_conn->ic_receive = cfiscsi_receive_callback; 1263255570Strasz cs->cs_conn->ic_error = cfiscsi_error_callback; 1264255570Strasz cs->cs_conn->ic_prv0 = cs; 1265255570Strasz 1266255570Strasz error = kthread_add(cfiscsi_maintenance_thread, cs, NULL, NULL, 0, 0, "cfiscsimt"); 1267255570Strasz if (error != 0) { 1268255570Strasz CFISCSI_SESSION_WARN(cs, "kthread_add(9) failed with error %d", error); 1269255570Strasz free(cs, M_CFISCSI); 1270255570Strasz return (NULL); 1271255570Strasz } 1272255570Strasz 1273255570Strasz mtx_lock(&softc->lock); 1274255570Strasz cs->cs_id = softc->last_session_id + 1; 1275255570Strasz softc->last_session_id++; 1276255570Strasz mtx_unlock(&softc->lock); 1277255570Strasz 1278255570Strasz mtx_lock(&softc->lock); 1279255570Strasz TAILQ_INSERT_TAIL(&softc->sessions, cs, cs_next); 1280255570Strasz mtx_unlock(&softc->lock); 1281255570Strasz 1282255570Strasz /* 1283255570Strasz * Start pinging the initiator. 1284255570Strasz */ 1285255570Strasz callout_init(&cs->cs_callout, 1); 1286255570Strasz callout_reset(&cs->cs_callout, 1 * hz, cfiscsi_callout, cs); 1287255570Strasz 1288255570Strasz return (cs); 1289255570Strasz} 1290255570Strasz 1291255570Straszstatic void 1292255570Straszcfiscsi_session_delete(struct cfiscsi_session *cs) 1293255570Strasz{ 1294255570Strasz struct cfiscsi_softc *softc; 1295255570Strasz 1296255570Strasz softc = &cfiscsi_softc; 1297255570Strasz 1298255570Strasz KASSERT(cs->cs_outstanding_ctl_pdus == 0, 1299255570Strasz ("destroying session with outstanding CTL pdus")); 1300255570Strasz KASSERT(TAILQ_EMPTY(&cs->cs_waiting_for_data_out), 1301255570Strasz ("destroying session with non-empty queue")); 1302255570Strasz 1303255570Strasz cfiscsi_session_unregister_initiator(cs); 1304255570Strasz if (cs->cs_target != NULL) 1305255570Strasz cfiscsi_target_release(cs->cs_target); 1306255570Strasz icl_conn_close(cs->cs_conn); 1307255570Strasz icl_conn_free(cs->cs_conn); 1308255570Strasz 1309255570Strasz mtx_lock(&softc->lock); 1310255570Strasz TAILQ_REMOVE(&softc->sessions, cs, cs_next); 1311255570Strasz mtx_unlock(&softc->lock); 1312255570Strasz 1313255570Strasz free(cs, M_CFISCSI); 1314255570Strasz} 1315255570Strasz 1316255570Straszint 1317255570Straszcfiscsi_init(void) 1318255570Strasz{ 1319255570Strasz struct cfiscsi_softc *softc; 1320255570Strasz int retval; 1321255570Strasz 1322255570Strasz softc = &cfiscsi_softc; 1323255570Strasz retval = 0; 1324255570Strasz bzero(softc, sizeof(*softc)); 1325255570Strasz mtx_init(&softc->lock, "cfiscsi", NULL, MTX_DEF); 1326255570Strasz 1327255570Strasz#ifdef ICL_KERNEL_PROXY 1328255570Strasz cv_init(&softc->accept_cv, "cfiscsi_accept"); 1329255570Strasz#endif 1330255570Strasz TAILQ_INIT(&softc->sessions); 1331255570Strasz TAILQ_INIT(&softc->targets); 1332255570Strasz 1333268682Smav softc->max_initiators = CTL_MAX_INIT_PER_PORT; 1334255570Strasz 1335255570Strasz cfiscsi_data_wait_zone = uma_zcreate("cfiscsi_data_wait", 1336255570Strasz sizeof(struct cfiscsi_data_wait), NULL, NULL, NULL, NULL, 1337256058Strasz UMA_ALIGN_PTR, 0); 1338255570Strasz 1339255570Strasz return (0); 1340255570Strasz} 1341255570Strasz 1342255570Strasz#ifdef ICL_KERNEL_PROXY 1343255570Straszstatic void 1344265513Straszcfiscsi_accept(struct socket *so, struct sockaddr *sa, int portal_id) 1345255570Strasz{ 1346255570Strasz struct cfiscsi_session *cs; 1347255570Strasz 1348255570Strasz cs = cfiscsi_session_new(&cfiscsi_softc); 1349255570Strasz if (cs == NULL) { 1350255570Strasz CFISCSI_WARN("failed to create session"); 1351255570Strasz return; 1352255570Strasz } 1353255570Strasz 1354255570Strasz icl_conn_handoff_sock(cs->cs_conn, so); 1355265513Strasz cs->cs_initiator_sa = sa; 1356265509Strasz cs->cs_portal_id = portal_id; 1357255570Strasz cs->cs_waiting_for_ctld = true; 1358255570Strasz cv_signal(&cfiscsi_softc.accept_cv); 1359255570Strasz} 1360255570Strasz#endif 1361255570Strasz 1362255570Straszstatic void 1363255570Straszcfiscsi_online(void *arg) 1364255570Strasz{ 1365255570Strasz struct cfiscsi_softc *softc; 1366268682Smav struct cfiscsi_target *ct; 1367268682Smav int online; 1368255570Strasz 1369268682Smav ct = (struct cfiscsi_target *)arg; 1370268682Smav softc = ct->ct_softc; 1371255570Strasz 1372268682Smav mtx_lock(&softc->lock); 1373268682Smav if (ct->ct_online) { 1374268682Smav mtx_unlock(&softc->lock); 1375268682Smav return; 1376268682Smav } 1377268682Smav ct->ct_online = 1; 1378268682Smav online = softc->online++; 1379268682Smav mtx_unlock(&softc->lock); 1380268682Smav if (online > 0) 1381268682Smav return; 1382268682Smav 1383255570Strasz#ifdef ICL_KERNEL_PROXY 1384255570Strasz if (softc->listener != NULL) 1385255570Strasz icl_listen_free(softc->listener); 1386255570Strasz softc->listener = icl_listen_new(cfiscsi_accept); 1387255570Strasz#endif 1388255570Strasz} 1389255570Strasz 1390255570Straszstatic void 1391255570Straszcfiscsi_offline(void *arg) 1392255570Strasz{ 1393255570Strasz struct cfiscsi_softc *softc; 1394268682Smav struct cfiscsi_target *ct; 1395255570Strasz struct cfiscsi_session *cs; 1396268682Smav int online; 1397255570Strasz 1398268682Smav ct = (struct cfiscsi_target *)arg; 1399268682Smav softc = ct->ct_softc; 1400255570Strasz 1401268682Smav mtx_lock(&softc->lock); 1402268682Smav if (!ct->ct_online) { 1403268682Smav mtx_unlock(&softc->lock); 1404268682Smav return; 1405268682Smav } 1406268682Smav ct->ct_online = 0; 1407268682Smav online = --softc->online; 1408255570Strasz 1409268682Smav TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1410268682Smav if (cs->cs_target == ct) 1411268682Smav cfiscsi_session_terminate(cs); 1412268682Smav } 1413255570Strasz mtx_unlock(&softc->lock); 1414268682Smav if (online > 0) 1415268682Smav return; 1416255570Strasz 1417255570Strasz#ifdef ICL_KERNEL_PROXY 1418255570Strasz icl_listen_free(softc->listener); 1419255570Strasz softc->listener = NULL; 1420255570Strasz#endif 1421255570Strasz} 1422255570Strasz 1423255570Straszstatic void 1424255570Straszcfiscsi_ioctl_handoff(struct ctl_iscsi *ci) 1425255570Strasz{ 1426255570Strasz struct cfiscsi_softc *softc; 1427255570Strasz struct cfiscsi_session *cs; 1428255570Strasz struct cfiscsi_target *ct; 1429255570Strasz struct ctl_iscsi_handoff_params *cihp; 1430255570Strasz int error; 1431255570Strasz 1432255570Strasz cihp = (struct ctl_iscsi_handoff_params *)&(ci->data); 1433255570Strasz softc = &cfiscsi_softc; 1434255570Strasz 1435255570Strasz CFISCSI_DEBUG("new connection from %s (%s) to %s", 1436255570Strasz cihp->initiator_name, cihp->initiator_addr, 1437255570Strasz cihp->target_name); 1438255570Strasz 1439268682Smav ct = cfiscsi_target_find(softc, cihp->target_name); 1440268682Smav if (ct == NULL) { 1441255570Strasz ci->status = CTL_ISCSI_ERROR; 1442255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1443268682Smav "%s: target not found", __func__); 1444255570Strasz return; 1445255570Strasz } 1446255570Strasz 1447268682Smav if (ct->ct_online == 0) { 1448255570Strasz ci->status = CTL_ISCSI_ERROR; 1449255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1450268682Smav "%s: port offline", __func__); 1451268682Smav cfiscsi_target_release(ct); 1452255570Strasz return; 1453255570Strasz } 1454255570Strasz 1455255570Strasz#ifdef ICL_KERNEL_PROXY 1456265507Strasz if (cihp->socket > 0 && cihp->connection_id > 0) { 1457265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1458265507Strasz "both socket and connection_id set"); 1459255570Strasz ci->status = CTL_ISCSI_ERROR; 1460264523Smav cfiscsi_target_release(ct); 1461255570Strasz return; 1462255570Strasz } 1463265507Strasz if (cihp->socket == 0) { 1464265507Strasz mtx_lock(&cfiscsi_softc.lock); 1465265507Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1466265507Strasz if (cs->cs_id == cihp->socket) 1467265507Strasz break; 1468265507Strasz } 1469265507Strasz if (cs == NULL) { 1470265507Strasz mtx_unlock(&cfiscsi_softc.lock); 1471265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1472265507Strasz "connection not found"); 1473265507Strasz ci->status = CTL_ISCSI_ERROR; 1474265507Strasz cfiscsi_target_release(ct); 1475265507Strasz return; 1476265507Strasz } 1477265507Strasz mtx_unlock(&cfiscsi_softc.lock); 1478265507Strasz } else { 1479265507Strasz#endif 1480265507Strasz cs = cfiscsi_session_new(softc); 1481265507Strasz if (cs == NULL) { 1482265507Strasz ci->status = CTL_ISCSI_ERROR; 1483265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1484265507Strasz "%s: cfiscsi_session_new failed", __func__); 1485265507Strasz cfiscsi_target_release(ct); 1486265507Strasz return; 1487265507Strasz } 1488265507Strasz#ifdef ICL_KERNEL_PROXY 1489255570Strasz } 1490255570Strasz#endif 1491255570Strasz cs->cs_target = ct; 1492255570Strasz 1493255570Strasz /* 1494255570Strasz * First PDU of Full Feature phase has the same CmdSN as the last 1495255570Strasz * PDU from the Login Phase received from the initiator. Thus, 1496255570Strasz * the -1 below. 1497255570Strasz */ 1498255570Strasz cs->cs_portal_group_tag = cihp->portal_group_tag; 1499255570Strasz cs->cs_cmdsn = cihp->cmdsn; 1500255570Strasz cs->cs_statsn = cihp->statsn; 1501255570Strasz cs->cs_max_data_segment_length = cihp->max_recv_data_segment_length; 1502255570Strasz cs->cs_max_burst_length = cihp->max_burst_length; 1503255570Strasz cs->cs_immediate_data = !!cihp->immediate_data; 1504255570Strasz if (cihp->header_digest == CTL_ISCSI_DIGEST_CRC32C) 1505255570Strasz cs->cs_conn->ic_header_crc32c = true; 1506255570Strasz if (cihp->data_digest == CTL_ISCSI_DIGEST_CRC32C) 1507255570Strasz cs->cs_conn->ic_data_crc32c = true; 1508255570Strasz 1509255570Strasz strlcpy(cs->cs_initiator_name, 1510255570Strasz cihp->initiator_name, sizeof(cs->cs_initiator_name)); 1511255570Strasz strlcpy(cs->cs_initiator_addr, 1512255570Strasz cihp->initiator_addr, sizeof(cs->cs_initiator_addr)); 1513255570Strasz strlcpy(cs->cs_initiator_alias, 1514255570Strasz cihp->initiator_alias, sizeof(cs->cs_initiator_alias)); 1515255570Strasz 1516255570Strasz#ifdef ICL_KERNEL_PROXY 1517265507Strasz if (cihp->socket > 0) { 1518265507Strasz#endif 1519265507Strasz error = icl_conn_handoff(cs->cs_conn, cihp->socket); 1520265507Strasz if (error != 0) { 1521265507Strasz cfiscsi_session_delete(cs); 1522265507Strasz ci->status = CTL_ISCSI_ERROR; 1523265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1524265507Strasz "%s: icl_conn_handoff failed with error %d", 1525265507Strasz __func__, error); 1526265507Strasz return; 1527265507Strasz } 1528265507Strasz#ifdef ICL_KERNEL_PROXY 1529255570Strasz } 1530255570Strasz#endif 1531255570Strasz 1532255570Strasz /* 1533255570Strasz * Register initiator with CTL. 1534255570Strasz */ 1535255570Strasz cfiscsi_session_register_initiator(cs); 1536255570Strasz 1537255570Strasz#ifdef ICL_KERNEL_PROXY 1538265507Strasz cs->cs_login_phase = false; 1539265507Strasz 1540255570Strasz /* 1541255570Strasz * First PDU of the Full Feature phase has likely already arrived. 1542255570Strasz * We have to pick it up and execute properly. 1543255570Strasz */ 1544255570Strasz if (cs->cs_login_pdu != NULL) { 1545255570Strasz CFISCSI_SESSION_DEBUG(cs, "picking up first PDU"); 1546255570Strasz cfiscsi_pdu_handle(cs->cs_login_pdu); 1547255570Strasz cs->cs_login_pdu = NULL; 1548255570Strasz } 1549255570Strasz#endif 1550255570Strasz 1551255570Strasz ci->status = CTL_ISCSI_OK; 1552255570Strasz} 1553255570Strasz 1554255570Straszstatic void 1555255570Straszcfiscsi_ioctl_list(struct ctl_iscsi *ci) 1556255570Strasz{ 1557255570Strasz struct ctl_iscsi_list_params *cilp; 1558255570Strasz struct cfiscsi_session *cs; 1559255570Strasz struct cfiscsi_softc *softc; 1560255570Strasz struct sbuf *sb; 1561255570Strasz int error; 1562255570Strasz 1563255570Strasz cilp = (struct ctl_iscsi_list_params *)&(ci->data); 1564255570Strasz softc = &cfiscsi_softc; 1565255570Strasz 1566255570Strasz sb = sbuf_new(NULL, NULL, cilp->alloc_len, SBUF_FIXEDLEN); 1567255570Strasz if (sb == NULL) { 1568255570Strasz ci->status = CTL_ISCSI_ERROR; 1569255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1570255570Strasz "Unable to allocate %d bytes for iSCSI session list", 1571255570Strasz cilp->alloc_len); 1572255570Strasz return; 1573255570Strasz } 1574255570Strasz 1575255570Strasz sbuf_printf(sb, "<ctlislist>\n"); 1576255570Strasz mtx_lock(&softc->lock); 1577255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1578255570Strasz#ifdef ICL_KERNEL_PROXY 1579255570Strasz if (cs->cs_target == NULL) 1580255570Strasz continue; 1581255570Strasz#endif 1582255570Strasz error = sbuf_printf(sb, "<connection id=\"%d\">" 1583255570Strasz "<initiator>%s</initiator>" 1584255570Strasz "<initiator_addr>%s</initiator_addr>" 1585255570Strasz "<initiator_alias>%s</initiator_alias>" 1586255570Strasz "<target>%s</target>" 1587255570Strasz "<target_alias>%s</target_alias>" 1588255570Strasz "<header_digest>%s</header_digest>" 1589255570Strasz "<data_digest>%s</data_digest>" 1590255570Strasz "<max_data_segment_length>%zd</max_data_segment_length>" 1591255570Strasz "<immediate_data>%d</immediate_data>" 1592255570Strasz "<iser>%d</iser>" 1593255570Strasz "</connection>\n", 1594255570Strasz cs->cs_id, 1595255570Strasz cs->cs_initiator_name, cs->cs_initiator_addr, cs->cs_initiator_alias, 1596255570Strasz cs->cs_target->ct_name, cs->cs_target->ct_alias, 1597255570Strasz cs->cs_conn->ic_header_crc32c ? "CRC32C" : "None", 1598255570Strasz cs->cs_conn->ic_data_crc32c ? "CRC32C" : "None", 1599255570Strasz cs->cs_max_data_segment_length, 1600255570Strasz cs->cs_immediate_data, 1601255570Strasz cs->cs_conn->ic_iser); 1602255570Strasz if (error != 0) 1603255570Strasz break; 1604255570Strasz } 1605255570Strasz mtx_unlock(&softc->lock); 1606255570Strasz error = sbuf_printf(sb, "</ctlislist>\n"); 1607255570Strasz if (error != 0) { 1608255570Strasz sbuf_delete(sb); 1609255570Strasz ci->status = CTL_ISCSI_LIST_NEED_MORE_SPACE; 1610255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1611255570Strasz "Out of space, %d bytes is too small", cilp->alloc_len); 1612255570Strasz return; 1613255570Strasz } 1614255570Strasz sbuf_finish(sb); 1615255570Strasz 1616255570Strasz error = copyout(sbuf_data(sb), cilp->conn_xml, sbuf_len(sb) + 1); 1617255570Strasz cilp->fill_len = sbuf_len(sb) + 1; 1618255570Strasz ci->status = CTL_ISCSI_OK; 1619255570Strasz sbuf_delete(sb); 1620255570Strasz} 1621255570Strasz 1622255570Straszstatic void 1623255570Straszcfiscsi_ioctl_terminate(struct ctl_iscsi *ci) 1624255570Strasz{ 1625255570Strasz struct icl_pdu *response; 1626255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1627255570Strasz struct ctl_iscsi_terminate_params *citp; 1628255570Strasz struct cfiscsi_session *cs; 1629255570Strasz struct cfiscsi_softc *softc; 1630255570Strasz int found = 0; 1631255570Strasz 1632255570Strasz citp = (struct ctl_iscsi_terminate_params *)&(ci->data); 1633255570Strasz softc = &cfiscsi_softc; 1634255570Strasz 1635255570Strasz mtx_lock(&softc->lock); 1636255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1637255570Strasz if (citp->all == 0 && cs->cs_id != citp->connection_id && 1638255570Strasz strcmp(cs->cs_initiator_name, citp->initiator_name) != 0 && 1639255570Strasz strcmp(cs->cs_initiator_addr, citp->initiator_addr) != 0) 1640255570Strasz continue; 1641255570Strasz 1642255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1643255570Strasz if (response == NULL) { 1644255570Strasz /* 1645255570Strasz * Oh well. Just terminate the connection. 1646255570Strasz */ 1647255570Strasz } else { 1648255570Strasz bhsam = (struct iscsi_bhs_asynchronous_message *) 1649255570Strasz response->ip_bhs; 1650255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1651255570Strasz bhsam->bhsam_flags = 0x80; 1652255570Strasz bhsam->bhsam_0xffffffff = 0xffffffff; 1653255570Strasz bhsam->bhsam_async_event = 1654255570Strasz BHSAM_EVENT_TARGET_TERMINATES_SESSION; 1655255570Strasz cfiscsi_pdu_queue(response); 1656255570Strasz } 1657255570Strasz cfiscsi_session_terminate(cs); 1658255570Strasz found++; 1659255570Strasz } 1660255570Strasz mtx_unlock(&softc->lock); 1661255570Strasz 1662255570Strasz if (found == 0) { 1663255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1664255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1665255570Strasz "No matching connections found"); 1666255570Strasz return; 1667255570Strasz } 1668255570Strasz 1669255570Strasz ci->status = CTL_ISCSI_OK; 1670255570Strasz} 1671255570Strasz 1672255570Straszstatic void 1673255570Straszcfiscsi_ioctl_logout(struct ctl_iscsi *ci) 1674255570Strasz{ 1675255570Strasz struct icl_pdu *response; 1676255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1677255570Strasz struct ctl_iscsi_logout_params *cilp; 1678255570Strasz struct cfiscsi_session *cs; 1679255570Strasz struct cfiscsi_softc *softc; 1680255570Strasz int found = 0; 1681255570Strasz 1682255570Strasz cilp = (struct ctl_iscsi_logout_params *)&(ci->data); 1683255570Strasz softc = &cfiscsi_softc; 1684255570Strasz 1685255570Strasz mtx_lock(&softc->lock); 1686255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1687255570Strasz if (cilp->all == 0 && cs->cs_id != cilp->connection_id && 1688255570Strasz strcmp(cs->cs_initiator_name, cilp->initiator_name) != 0 && 1689255570Strasz strcmp(cs->cs_initiator_addr, cilp->initiator_addr) != 0) 1690255570Strasz continue; 1691255570Strasz 1692255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1693255570Strasz if (response == NULL) { 1694255570Strasz ci->status = CTL_ISCSI_ERROR; 1695255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1696255570Strasz "Unable to allocate memory"); 1697255570Strasz mtx_unlock(&softc->lock); 1698255570Strasz return; 1699255570Strasz } 1700255570Strasz bhsam = 1701255570Strasz (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1702255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1703255570Strasz bhsam->bhsam_flags = 0x80; 1704255570Strasz bhsam->bhsam_async_event = BHSAM_EVENT_TARGET_REQUESTS_LOGOUT; 1705255570Strasz bhsam->bhsam_parameter3 = htons(10); 1706255570Strasz cfiscsi_pdu_queue(response); 1707255570Strasz found++; 1708255570Strasz } 1709255570Strasz mtx_unlock(&softc->lock); 1710255570Strasz 1711255570Strasz if (found == 0) { 1712255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1713255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1714255570Strasz "No matching connections found"); 1715255570Strasz return; 1716255570Strasz } 1717255570Strasz 1718255570Strasz ci->status = CTL_ISCSI_OK; 1719255570Strasz} 1720255570Strasz 1721255570Strasz#ifdef ICL_KERNEL_PROXY 1722255570Straszstatic void 1723255570Straszcfiscsi_ioctl_listen(struct ctl_iscsi *ci) 1724255570Strasz{ 1725255570Strasz struct ctl_iscsi_listen_params *cilp; 1726255570Strasz struct sockaddr *sa; 1727255570Strasz int error; 1728255570Strasz 1729255570Strasz cilp = (struct ctl_iscsi_listen_params *)&(ci->data); 1730255570Strasz 1731255570Strasz if (cfiscsi_softc.listener == NULL) { 1732255570Strasz CFISCSI_DEBUG("no listener"); 1733255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "no listener"); 1734255570Strasz ci->status = CTL_ISCSI_ERROR; 1735255570Strasz return; 1736255570Strasz } 1737255570Strasz 1738255570Strasz error = getsockaddr(&sa, (void *)cilp->addr, cilp->addrlen); 1739255570Strasz if (error != 0) { 1740255570Strasz CFISCSI_DEBUG("getsockaddr, error %d", error); 1741255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "getsockaddr failed"); 1742255570Strasz ci->status = CTL_ISCSI_ERROR; 1743255570Strasz return; 1744255570Strasz } 1745255570Strasz 1746255570Strasz error = icl_listen_add(cfiscsi_softc.listener, cilp->iser, cilp->domain, 1747265509Strasz cilp->socktype, cilp->protocol, sa, cilp->portal_id); 1748255570Strasz if (error != 0) { 1749255570Strasz free(sa, M_SONAME); 1750255570Strasz CFISCSI_DEBUG("icl_listen_add, error %d", error); 1751255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1752255570Strasz "icl_listen_add failed, error %d", error); 1753255570Strasz ci->status = CTL_ISCSI_ERROR; 1754255570Strasz return; 1755255570Strasz } 1756255570Strasz 1757255570Strasz ci->status = CTL_ISCSI_OK; 1758255570Strasz} 1759255570Strasz 1760255570Straszstatic void 1761255570Straszcfiscsi_ioctl_accept(struct ctl_iscsi *ci) 1762255570Strasz{ 1763255570Strasz struct ctl_iscsi_accept_params *ciap; 1764255570Strasz struct cfiscsi_session *cs; 1765255570Strasz int error; 1766255570Strasz 1767255570Strasz ciap = (struct ctl_iscsi_accept_params *)&(ci->data); 1768255570Strasz 1769255570Strasz mtx_lock(&cfiscsi_softc.lock); 1770255570Strasz for (;;) { 1771255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1772255570Strasz if (cs->cs_waiting_for_ctld) 1773255570Strasz break; 1774255570Strasz } 1775255570Strasz if (cs != NULL) 1776255570Strasz break; 1777255570Strasz error = cv_wait_sig(&cfiscsi_softc.accept_cv, &cfiscsi_softc.lock); 1778255570Strasz if (error != 0) { 1779255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1780255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "interrupted"); 1781255570Strasz ci->status = CTL_ISCSI_ERROR; 1782255570Strasz return; 1783255570Strasz } 1784255570Strasz } 1785255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1786255570Strasz 1787255570Strasz cs->cs_waiting_for_ctld = false; 1788255570Strasz cs->cs_login_phase = true; 1789255570Strasz 1790255570Strasz ciap->connection_id = cs->cs_id; 1791265509Strasz ciap->portal_id = cs->cs_portal_id; 1792265513Strasz ciap->initiator_addrlen = cs->cs_initiator_sa->sa_len; 1793265513Strasz error = copyout(cs->cs_initiator_sa, ciap->initiator_addr, 1794265513Strasz cs->cs_initiator_sa->sa_len); 1795265513Strasz if (error != 0) { 1796265513Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1797265513Strasz "copyout failed with error %d", error); 1798265513Strasz ci->status = CTL_ISCSI_ERROR; 1799265513Strasz return; 1800265513Strasz } 1801265513Strasz 1802255570Strasz ci->status = CTL_ISCSI_OK; 1803255570Strasz} 1804255570Strasz 1805255570Straszstatic void 1806255570Straszcfiscsi_ioctl_send(struct ctl_iscsi *ci) 1807255570Strasz{ 1808255570Strasz struct ctl_iscsi_send_params *cisp; 1809255570Strasz struct cfiscsi_session *cs; 1810255570Strasz struct icl_pdu *ip; 1811255570Strasz size_t datalen; 1812255570Strasz void *data; 1813255570Strasz int error; 1814255570Strasz 1815255570Strasz cisp = (struct ctl_iscsi_send_params *)&(ci->data); 1816255570Strasz 1817255570Strasz mtx_lock(&cfiscsi_softc.lock); 1818255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1819255570Strasz if (cs->cs_id == cisp->connection_id) 1820255570Strasz break; 1821255570Strasz } 1822255570Strasz if (cs == NULL) { 1823255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1824255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1825255570Strasz ci->status = CTL_ISCSI_ERROR; 1826255570Strasz return; 1827255570Strasz } 1828255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1829255570Strasz 1830255570Strasz#if 0 1831255570Strasz if (cs->cs_login_phase == false) 1832255570Strasz return (EBUSY); 1833255570Strasz#endif 1834255570Strasz 1835255570Strasz if (cs->cs_terminating) { 1836255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection is terminating"); 1837255570Strasz ci->status = CTL_ISCSI_ERROR; 1838255570Strasz return; 1839255570Strasz } 1840255570Strasz 1841255570Strasz datalen = cisp->data_segment_len; 1842255570Strasz /* 1843255570Strasz * XXX 1844255570Strasz */ 1845255570Strasz //if (datalen > CFISCSI_MAX_DATA_SEGMENT_LENGTH) { 1846255570Strasz if (datalen > 65535) { 1847255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1848255570Strasz ci->status = CTL_ISCSI_ERROR; 1849255570Strasz return; 1850255570Strasz } 1851255570Strasz if (datalen > 0) { 1852255570Strasz data = malloc(datalen, M_CFISCSI, M_WAITOK); 1853255570Strasz error = copyin(cisp->data_segment, data, datalen); 1854255570Strasz if (error != 0) { 1855255570Strasz free(data, M_CFISCSI); 1856255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "copyin error %d", error); 1857255570Strasz ci->status = CTL_ISCSI_ERROR; 1858255570Strasz return; 1859255570Strasz } 1860255570Strasz } 1861255570Strasz 1862255570Strasz ip = icl_pdu_new_bhs(cs->cs_conn, M_WAITOK); 1863255570Strasz memcpy(ip->ip_bhs, cisp->bhs, sizeof(*ip->ip_bhs)); 1864255570Strasz if (datalen > 0) { 1865255570Strasz icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1866255570Strasz free(data, M_CFISCSI); 1867255570Strasz } 1868265507Strasz CFISCSI_SESSION_LOCK(cs); 1869255570Strasz icl_pdu_queue(ip); 1870265507Strasz CFISCSI_SESSION_UNLOCK(cs); 1871255570Strasz ci->status = CTL_ISCSI_OK; 1872255570Strasz} 1873255570Strasz 1874255570Straszstatic void 1875255570Straszcfiscsi_ioctl_receive(struct ctl_iscsi *ci) 1876255570Strasz{ 1877255570Strasz struct ctl_iscsi_receive_params *cirp; 1878255570Strasz struct cfiscsi_session *cs; 1879255570Strasz struct icl_pdu *ip; 1880255570Strasz void *data; 1881265510Strasz int error; 1882255570Strasz 1883255570Strasz cirp = (struct ctl_iscsi_receive_params *)&(ci->data); 1884255570Strasz 1885255570Strasz mtx_lock(&cfiscsi_softc.lock); 1886255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1887255570Strasz if (cs->cs_id == cirp->connection_id) 1888255570Strasz break; 1889255570Strasz } 1890255570Strasz if (cs == NULL) { 1891255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1892265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1893265510Strasz "connection not found"); 1894255570Strasz ci->status = CTL_ISCSI_ERROR; 1895255570Strasz return; 1896255570Strasz } 1897255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1898255570Strasz 1899255570Strasz#if 0 1900255570Strasz if (is->is_login_phase == false) 1901255570Strasz return (EBUSY); 1902255570Strasz#endif 1903255570Strasz 1904255570Strasz CFISCSI_SESSION_LOCK(cs); 1905265510Strasz while (cs->cs_login_pdu == NULL && cs->cs_terminating == false) { 1906265510Strasz error = cv_wait_sig(&cs->cs_login_cv, &cs->cs_lock); 1907265510Strasz if (error != 0) { 1908265510Strasz CFISCSI_SESSION_UNLOCK(cs); 1909265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1910265510Strasz "interrupted by signal"); 1911265510Strasz ci->status = CTL_ISCSI_ERROR; 1912265510Strasz return; 1913265510Strasz } 1914265510Strasz } 1915265510Strasz 1916255570Strasz if (cs->cs_terminating) { 1917255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1918265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1919265510Strasz "connection terminating"); 1920255570Strasz ci->status = CTL_ISCSI_ERROR; 1921255570Strasz return; 1922255570Strasz } 1923255570Strasz ip = cs->cs_login_pdu; 1924255570Strasz cs->cs_login_pdu = NULL; 1925255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1926255570Strasz 1927255570Strasz if (ip->ip_data_len > cirp->data_segment_len) { 1928255570Strasz icl_pdu_free(ip); 1929265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1930265510Strasz "data segment too big"); 1931255570Strasz ci->status = CTL_ISCSI_ERROR; 1932255570Strasz return; 1933255570Strasz } 1934255570Strasz 1935255570Strasz copyout(ip->ip_bhs, cirp->bhs, sizeof(*ip->ip_bhs)); 1936255570Strasz if (ip->ip_data_len > 0) { 1937255570Strasz data = malloc(ip->ip_data_len, M_CFISCSI, M_WAITOK); 1938255570Strasz icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1939255570Strasz copyout(data, cirp->data_segment, ip->ip_data_len); 1940255570Strasz free(data, M_CFISCSI); 1941255570Strasz } 1942255570Strasz 1943255570Strasz icl_pdu_free(ip); 1944255570Strasz ci->status = CTL_ISCSI_OK; 1945255570Strasz} 1946255570Strasz 1947255570Strasz#endif /* !ICL_KERNEL_PROXY */ 1948255570Strasz 1949268682Smavstatic void 1950268682Smavcfiscsi_ioctl_port_create(struct ctl_req *req) 1951268682Smav{ 1952268682Smav struct cfiscsi_target *ct; 1953268682Smav struct ctl_port *port; 1954268682Smav const char *target, *alias, *tag; 1955268682Smav ctl_options_t opts; 1956268682Smav int retval; 1957268682Smav 1958268682Smav ctl_init_opts(&opts, req->num_args, req->kern_args); 1959268682Smav target = ctl_get_opt(&opts, "cfiscsi_target"); 1960268682Smav alias = ctl_get_opt(&opts, "cfiscsi_target_alias"); 1961268682Smav tag = ctl_get_opt(&opts, "cfiscsi_portal_group_tag"); 1962268682Smav if (target == NULL || tag == NULL) { 1963268682Smav ctl_free_opts(&opts); 1964268682Smav req->status = CTL_LUN_ERROR; 1965268682Smav snprintf(req->error_str, sizeof(req->error_str), 1966268682Smav "Missing required argument"); 1967268682Smav return; 1968268682Smav } 1969268682Smav ct = cfiscsi_target_find_or_create(&cfiscsi_softc, target, alias); 1970268682Smav if (ct == NULL) { 1971268682Smav ctl_free_opts(&opts); 1972268682Smav req->status = CTL_LUN_ERROR; 1973268682Smav snprintf(req->error_str, sizeof(req->error_str), 1974268682Smav "failed to create target \"%s\"", target); 1975268682Smav return; 1976268682Smav } 1977268682Smav if (ct->ct_state == CFISCSI_TARGET_STATE_ACTIVE) { 1978268682Smav cfiscsi_target_release(ct); 1979268682Smav ctl_free_opts(&opts); 1980268682Smav req->status = CTL_LUN_ERROR; 1981268682Smav snprintf(req->error_str, sizeof(req->error_str), 1982268682Smav "target \"%s\" already exist", target); 1983268682Smav return; 1984268682Smav } 1985268682Smav port = &ct->ct_port; 1986268682Smav if (ct->ct_state == CFISCSI_TARGET_STATE_DYING) 1987268682Smav goto done; 1988268682Smav 1989268682Smav port->frontend = &cfiscsi_frontend; 1990268682Smav port->port_type = CTL_PORT_ISCSI; 1991268682Smav /* XXX KDM what should the real number be here? */ 1992268682Smav port->num_requested_ctl_io = 4096; 1993268682Smav port->port_name = "iscsi"; 1994268682Smav port->virtual_port = strtoul(tag, NULL, 0); 1995268682Smav port->port_online = cfiscsi_online; 1996268682Smav port->port_offline = cfiscsi_offline; 1997268682Smav port->onoff_arg = ct; 1998268682Smav port->lun_enable = cfiscsi_lun_enable; 1999268682Smav port->lun_disable = cfiscsi_lun_disable; 2000268682Smav port->targ_lun_arg = ct; 2001268682Smav port->devid = cfiscsi_devid; 2002268682Smav port->fe_datamove = cfiscsi_datamove; 2003268682Smav port->fe_done = cfiscsi_done; 2004268682Smav 2005268682Smav /* XXX KDM what should we report here? */ 2006268682Smav /* XXX These should probably be fetched from CTL. */ 2007268682Smav port->max_targets = 1; 2008268682Smav port->max_target_id = 15; 2009268682Smav 2010268682Smav port->options = opts; 2011268682Smav STAILQ_INIT(&opts); 2012268682Smav 2013268682Smav retval = ctl_port_register(port, /*master_SC*/ 1); 2014268682Smav if (retval != 0) { 2015268682Smav ctl_free_opts(&port->options); 2016268682Smav cfiscsi_target_release(ct); 2017268682Smav req->status = CTL_LUN_ERROR; 2018268682Smav snprintf(req->error_str, sizeof(req->error_str), 2019268682Smav "ctl_frontend_register() failed with error %d", retval); 2020268682Smav return; 2021268682Smav } 2022268682Smavdone: 2023268682Smav ct->ct_state = CFISCSI_TARGET_STATE_ACTIVE; 2024268682Smav req->status = CTL_LUN_OK; 2025268682Smav memcpy(req->kern_args[0].kvalue, &port->targ_port, 2026268682Smav sizeof(port->targ_port)); //XXX 2027268682Smav} 2028268682Smav 2029268682Smavstatic void 2030268682Smavcfiscsi_ioctl_port_remove(struct ctl_req *req) 2031268682Smav{ 2032268682Smav struct cfiscsi_target *ct; 2033268682Smav const char *target; 2034268682Smav ctl_options_t opts; 2035268682Smav 2036268682Smav ctl_init_opts(&opts, req->num_args, req->kern_args); 2037268682Smav target = ctl_get_opt(&opts, "cfiscsi_target"); 2038268682Smav if (target == NULL) { 2039268682Smav ctl_free_opts(&opts); 2040268682Smav req->status = CTL_LUN_ERROR; 2041268682Smav snprintf(req->error_str, sizeof(req->error_str), 2042268682Smav "Missing required argument"); 2043268682Smav return; 2044268682Smav } 2045268682Smav ct = cfiscsi_target_find(&cfiscsi_softc, target); 2046268682Smav if (ct == NULL) { 2047268682Smav ctl_free_opts(&opts); 2048268682Smav req->status = CTL_LUN_ERROR; 2049268682Smav snprintf(req->error_str, sizeof(req->error_str), 2050268682Smav "can't find target \"%s\"", target); 2051268682Smav return; 2052268682Smav } 2053268682Smav if (ct->ct_state != CFISCSI_TARGET_STATE_ACTIVE) { 2054268682Smav ctl_free_opts(&opts); 2055268682Smav req->status = CTL_LUN_ERROR; 2056268682Smav snprintf(req->error_str, sizeof(req->error_str), 2057268682Smav "target \"%s\" is already dying", target); 2058268682Smav return; 2059268682Smav } 2060268682Smav ctl_free_opts(&opts); 2061268682Smav 2062268682Smav ct->ct_state = CFISCSI_TARGET_STATE_DYING; 2063268682Smav ctl_port_offline(&ct->ct_port); 2064268682Smav cfiscsi_target_release(ct); 2065268682Smav cfiscsi_target_release(ct); 2066268682Smav} 2067268682Smav 2068255570Straszstatic int 2069255570Straszcfiscsi_ioctl(struct cdev *dev, 2070255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td) 2071255570Strasz{ 2072255570Strasz struct ctl_iscsi *ci; 2073268682Smav struct ctl_req *req; 2074255570Strasz 2075268682Smav if (cmd == CTL_PORT_REQ) { 2076268682Smav req = (struct ctl_req *)addr; 2077268682Smav switch (req->reqtype) { 2078268682Smav case CTL_REQ_CREATE: 2079268682Smav cfiscsi_ioctl_port_create(req); 2080268682Smav break; 2081268682Smav case CTL_REQ_REMOVE: 2082268682Smav cfiscsi_ioctl_port_remove(req); 2083268682Smav break; 2084268682Smav default: 2085268682Smav req->status = CTL_LUN_ERROR; 2086268682Smav snprintf(req->error_str, sizeof(req->error_str), 2087268682Smav "Unsupported request type %d", req->reqtype); 2088268682Smav } 2089268682Smav return (0); 2090268682Smav } 2091268682Smav 2092255570Strasz if (cmd != CTL_ISCSI) 2093255570Strasz return (ENOTTY); 2094255570Strasz 2095255570Strasz ci = (struct ctl_iscsi *)addr; 2096255570Strasz switch (ci->type) { 2097255570Strasz case CTL_ISCSI_HANDOFF: 2098255570Strasz cfiscsi_ioctl_handoff(ci); 2099255570Strasz break; 2100255570Strasz case CTL_ISCSI_LIST: 2101255570Strasz cfiscsi_ioctl_list(ci); 2102255570Strasz break; 2103255570Strasz case CTL_ISCSI_TERMINATE: 2104255570Strasz cfiscsi_ioctl_terminate(ci); 2105255570Strasz break; 2106255570Strasz case CTL_ISCSI_LOGOUT: 2107255570Strasz cfiscsi_ioctl_logout(ci); 2108255570Strasz break; 2109255570Strasz#ifdef ICL_KERNEL_PROXY 2110255570Strasz case CTL_ISCSI_LISTEN: 2111255570Strasz cfiscsi_ioctl_listen(ci); 2112255570Strasz break; 2113255570Strasz case CTL_ISCSI_ACCEPT: 2114255570Strasz cfiscsi_ioctl_accept(ci); 2115255570Strasz break; 2116255570Strasz case CTL_ISCSI_SEND: 2117255570Strasz cfiscsi_ioctl_send(ci); 2118255570Strasz break; 2119255570Strasz case CTL_ISCSI_RECEIVE: 2120255570Strasz cfiscsi_ioctl_receive(ci); 2121255570Strasz break; 2122265508Strasz#else 2123265508Strasz case CTL_ISCSI_LISTEN: 2124265508Strasz case CTL_ISCSI_ACCEPT: 2125265508Strasz case CTL_ISCSI_SEND: 2126265508Strasz case CTL_ISCSI_RECEIVE: 2127265508Strasz ci->status = CTL_ISCSI_ERROR; 2128265508Strasz snprintf(ci->error_str, sizeof(ci->error_str), 2129265508Strasz "%s: CTL compiled without ICL_KERNEL_PROXY", 2130265508Strasz __func__); 2131265508Strasz break; 2132265508Strasz#endif /* !ICL_KERNEL_PROXY */ 2133255570Strasz default: 2134255570Strasz ci->status = CTL_ISCSI_ERROR; 2135255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 2136255570Strasz "%s: invalid iSCSI request type %d", __func__, ci->type); 2137255570Strasz break; 2138255570Strasz } 2139255570Strasz 2140255570Strasz return (0); 2141255570Strasz} 2142255570Strasz 2143255570Straszstatic int 2144255570Straszcfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len) 2145255570Strasz{ 2146255570Strasz struct cfiscsi_session *cs; 2147255570Strasz struct scsi_vpd_device_id *devid_ptr; 2148268257Smav struct scsi_vpd_id_descriptor *desc, *desc1, *desc2, *desc3, *desc4; 2149268260Smav struct scsi_vpd_id_descriptor *desc5; 2150255570Strasz struct scsi_vpd_id_t10 *t10id; 2151255570Strasz struct ctl_lun *lun; 2152255570Strasz const struct icl_pdu *request; 2153268257Smav int i, ret; 2154268145Smav char *val; 2155268673Smav size_t data_len, devid_len, wwnn_len, wwpn_len, lun_name_len; 2156255570Strasz 2157255570Strasz lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 2158255570Strasz request = ctsio->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2159255570Strasz cs = PDU_SESSION(request); 2160255570Strasz 2161255570Strasz wwpn_len = strlen(cs->cs_target->ct_name); 2162268147Smav wwpn_len += strlen(",t,0x0001"); 2163255570Strasz wwpn_len += 1; /* '\0' */ 2164255570Strasz if ((wwpn_len % 4) != 0) 2165255570Strasz wwpn_len += (4 - (wwpn_len % 4)); 2166255570Strasz 2167268260Smav wwnn_len = strlen(cs->cs_target->ct_name); 2168268260Smav wwnn_len += 1; /* '\0' */ 2169268260Smav if ((wwnn_len % 4) != 0) 2170268260Smav wwnn_len += (4 - (wwnn_len % 4)); 2171268260Smav 2172268257Smav if (lun == NULL) { 2173268673Smav devid_len = CTL_DEVID_MIN_LEN; 2174268257Smav lun_name_len = 0; 2175268257Smav } else { 2176268673Smav devid_len = max(CTL_DEVID_MIN_LEN, 2177268673Smav strnlen(lun->be_lun->device_id, CTL_DEVID_LEN)); 2178268257Smav lun_name_len = strlen(cs->cs_target->ct_name); 2179268257Smav lun_name_len += strlen(",lun,XXXXXXXX"); 2180268257Smav lun_name_len += 1; /* '\0' */ 2181268257Smav if ((lun_name_len % 4) != 0) 2182268257Smav lun_name_len += (4 - (lun_name_len % 4)); 2183268257Smav } 2184268257Smav 2185268673Smav data_len = sizeof(struct scsi_vpd_device_id) + 2186255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 2187268673Smav sizeof(struct scsi_vpd_id_t10) + devid_len + 2188268257Smav sizeof(struct scsi_vpd_id_descriptor) + lun_name_len + 2189268260Smav sizeof(struct scsi_vpd_id_descriptor) + wwnn_len + 2190255570Strasz sizeof(struct scsi_vpd_id_descriptor) + wwpn_len + 2191255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 2192255570Strasz sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 2193255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 2194255570Strasz sizeof(struct scsi_vpd_id_trgt_port_grp_id); 2195255570Strasz 2196268673Smav ctsio->kern_data_ptr = malloc(data_len, M_CTL, M_WAITOK | M_ZERO); 2197255570Strasz devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 2198255570Strasz ctsio->kern_sg_entries = 0; 2199255570Strasz 2200268673Smav if (data_len < alloc_len) { 2201268673Smav ctsio->residual = alloc_len - data_len; 2202268673Smav ctsio->kern_data_len = data_len; 2203268673Smav ctsio->kern_total_len = data_len; 2204255570Strasz } else { 2205255570Strasz ctsio->residual = 0; 2206255570Strasz ctsio->kern_data_len = alloc_len; 2207255570Strasz ctsio->kern_total_len = alloc_len; 2208255570Strasz } 2209255570Strasz ctsio->kern_data_resid = 0; 2210255570Strasz ctsio->kern_rel_offset = 0; 2211255570Strasz ctsio->kern_sg_entries = 0; 2212255570Strasz 2213255570Strasz desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 2214255570Strasz t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 2215255570Strasz desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 2216268673Smav sizeof(struct scsi_vpd_id_t10) + devid_len); 2217255570Strasz desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 2218268257Smav lun_name_len); 2219268257Smav desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 2220268260Smav wwnn_len); 2221268260Smav desc4 = (struct scsi_vpd_id_descriptor *)(&desc3->identifier[0] + 2222255570Strasz wwpn_len); 2223268260Smav desc5 = (struct scsi_vpd_id_descriptor *)(&desc4->identifier[0] + 2224255570Strasz sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 2225255570Strasz 2226255570Strasz if (lun != NULL) 2227255570Strasz devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 2228255570Strasz lun->be_lun->lun_type; 2229255570Strasz else 2230255570Strasz devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 2231255570Strasz 2232255570Strasz devid_ptr->page_code = SVPD_DEVICE_ID; 2233255570Strasz 2234268673Smav scsi_ulto2b(data_len - 4, devid_ptr->length); 2235255570Strasz 2236255570Strasz /* 2237255570Strasz * We're using a LUN association here. i.e., this device ID is a 2238255570Strasz * per-LUN identifier. 2239255570Strasz */ 2240255570Strasz desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_ASCII; 2241255570Strasz desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 2242268673Smav desc->length = sizeof(*t10id) + devid_len; 2243268678Smav if (lun == NULL || (val = ctl_get_opt(&lun->be_lun->options, 2244268678Smav "vendor")) == NULL) { 2245268145Smav strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 2246268145Smav } else { 2247268145Smav memset(t10id->vendor, ' ', sizeof(t10id->vendor)); 2248268145Smav strncpy(t10id->vendor, val, 2249268145Smav min(sizeof(t10id->vendor), strlen(val))); 2250268145Smav } 2251255570Strasz 2252255570Strasz /* 2253255570Strasz * If we've actually got a backend, copy the device id from the 2254255570Strasz * per-LUN data. Otherwise, set it to all spaces. 2255255570Strasz */ 2256255570Strasz if (lun != NULL) { 2257255570Strasz /* 2258255570Strasz * Copy the backend's LUN ID. 2259255570Strasz */ 2260255570Strasz strncpy((char *)t10id->vendor_spec_id, 2261268673Smav (char *)lun->be_lun->device_id, devid_len); 2262255570Strasz } else { 2263255570Strasz /* 2264255570Strasz * No backend, set this to spaces. 2265255570Strasz */ 2266268673Smav memset(t10id->vendor_spec_id, 0x20, devid_len); 2267255570Strasz } 2268255570Strasz 2269255570Strasz /* 2270268257Smav * desc1 is for the unique LUN name. 2271268257Smav * 2272268257Smav * XXX: According to SPC-3, LUN must report the same ID through 2273268257Smav * all the ports. The code below, however, reports the 2274268257Smav * ID only via iSCSI. 2275255570Strasz */ 2276268257Smav desc1->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2277268257Smav desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | 2278268257Smav SVPD_ID_TYPE_SCSI_NAME; 2279268257Smav desc1->length = lun_name_len; 2280268257Smav if (lun != NULL) { 2281268257Smav /* 2282268257Smav * Find the per-target LUN number. 2283268257Smav */ 2284268257Smav for (i = 0; i < CTL_MAX_LUNS; i++) { 2285268257Smav if (cs->cs_target->ct_luns[i] == lun->lun) 2286268257Smav break; 2287268257Smav } 2288268257Smav KASSERT(i < CTL_MAX_LUNS, 2289268257Smav ("lun %jd not found", (uintmax_t)lun->lun)); 2290268257Smav ret = snprintf(desc1->identifier, lun_name_len, "%s,lun,%d", 2291268257Smav cs->cs_target->ct_name, i); 2292268257Smav KASSERT(ret > 0 && ret <= lun_name_len, ("bad snprintf")); 2293268257Smav } else { 2294268257Smav KASSERT(lun_name_len == 0, ("no lun, but lun_name_len != 0")); 2295268257Smav } 2296255570Strasz 2297255570Strasz /* 2298268260Smav * desc2 is for the Target Name. 2299255570Strasz */ 2300268260Smav desc2->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2301268260Smav desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_TARGET | 2302268257Smav SVPD_ID_TYPE_SCSI_NAME; 2303268260Smav desc2->length = wwnn_len; 2304268260Smav snprintf(desc2->identifier, wwnn_len, "%s", cs->cs_target->ct_name); 2305268260Smav 2306268260Smav /* 2307268260Smav * desc3 is for the WWPN which is a port asscociation. 2308268260Smav */ 2309268260Smav desc3->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2310268260Smav desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2311268260Smav SVPD_ID_TYPE_SCSI_NAME; 2312268260Smav desc3->length = wwpn_len; 2313268260Smav snprintf(desc3->identifier, wwpn_len, "%s,t,0x%4.4x", 2314268257Smav cs->cs_target->ct_name, cs->cs_portal_group_tag); 2315255570Strasz 2316255570Strasz /* 2317268257Smav * desc3 is for the Relative Target Port(type 4h) identifier 2318255570Strasz */ 2319268260Smav desc4->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY; 2320268260Smav desc4->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2321268257Smav SVPD_ID_TYPE_RELTARG; 2322268260Smav desc4->length = 4; 2323268260Smav desc4->identifier[3] = 1; 2324255570Strasz 2325268257Smav /* 2326268257Smav * desc4 is for the Target Port Group(type 5h) identifier 2327268257Smav */ 2328268260Smav desc5->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY; 2329268260Smav desc5->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2330268257Smav SVPD_ID_TYPE_TPORTGRP; 2331268260Smav desc5->length = 4; 2332268260Smav desc5->identifier[3] = 1; 2333268257Smav 2334255570Strasz ctsio->scsi_status = SCSI_STATUS_OK; 2335255570Strasz 2336268550Smav ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED; 2337255570Strasz ctsio->be_move_done = ctl_config_move_done; 2338255570Strasz ctl_datamove((union ctl_io *)ctsio); 2339255570Strasz 2340255570Strasz return (CTL_RETVAL_COMPLETE); 2341255570Strasz} 2342255570Strasz 2343255570Straszstatic void 2344255570Straszcfiscsi_target_hold(struct cfiscsi_target *ct) 2345255570Strasz{ 2346255570Strasz 2347255570Strasz refcount_acquire(&ct->ct_refcount); 2348255570Strasz} 2349255570Strasz 2350255570Straszstatic void 2351255570Straszcfiscsi_target_release(struct cfiscsi_target *ct) 2352255570Strasz{ 2353255570Strasz struct cfiscsi_softc *softc; 2354255570Strasz 2355255570Strasz softc = ct->ct_softc; 2356255570Strasz mtx_lock(&softc->lock); 2357255570Strasz if (refcount_release(&ct->ct_refcount)) { 2358255570Strasz TAILQ_REMOVE(&softc->targets, ct, ct_next); 2359255570Strasz mtx_unlock(&softc->lock); 2360268682Smav if (ct->ct_state != CFISCSI_TARGET_STATE_INVALID) { 2361268682Smav ct->ct_state = CFISCSI_TARGET_STATE_INVALID; 2362268682Smav if (ctl_port_deregister(&ct->ct_port) != 0) 2363268682Smav printf("%s: ctl_port_deregister() failed\n", 2364268682Smav __func__); 2365268682Smav } 2366255570Strasz free(ct, M_CFISCSI); 2367255570Strasz 2368255570Strasz return; 2369255570Strasz } 2370255570Strasz mtx_unlock(&softc->lock); 2371255570Strasz} 2372255570Strasz 2373255570Straszstatic struct cfiscsi_target * 2374255570Straszcfiscsi_target_find(struct cfiscsi_softc *softc, const char *name) 2375255570Strasz{ 2376255570Strasz struct cfiscsi_target *ct; 2377255570Strasz 2378255570Strasz mtx_lock(&softc->lock); 2379255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2380268682Smav if (strcmp(name, ct->ct_name) != 0 || 2381268682Smav ct->ct_state != CFISCSI_TARGET_STATE_ACTIVE) 2382255570Strasz continue; 2383255570Strasz cfiscsi_target_hold(ct); 2384255570Strasz mtx_unlock(&softc->lock); 2385255570Strasz return (ct); 2386255570Strasz } 2387255570Strasz mtx_unlock(&softc->lock); 2388255570Strasz 2389255570Strasz return (NULL); 2390255570Strasz} 2391255570Strasz 2392255570Straszstatic struct cfiscsi_target * 2393255570Straszcfiscsi_target_find_or_create(struct cfiscsi_softc *softc, const char *name, 2394255570Strasz const char *alias) 2395255570Strasz{ 2396255570Strasz struct cfiscsi_target *ct, *newct; 2397255570Strasz int i; 2398255570Strasz 2399255570Strasz if (name[0] == '\0' || strlen(name) >= CTL_ISCSI_NAME_LEN) 2400255570Strasz return (NULL); 2401255570Strasz 2402255570Strasz newct = malloc(sizeof(*newct), M_CFISCSI, M_WAITOK | M_ZERO); 2403255570Strasz 2404255570Strasz mtx_lock(&softc->lock); 2405255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2406268682Smav if (strcmp(name, ct->ct_name) != 0 || 2407268682Smav ct->ct_state == CFISCSI_TARGET_STATE_INVALID) 2408255570Strasz continue; 2409255570Strasz cfiscsi_target_hold(ct); 2410255570Strasz mtx_unlock(&softc->lock); 2411255570Strasz free(newct, M_CFISCSI); 2412255570Strasz return (ct); 2413255570Strasz } 2414255570Strasz 2415255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) 2416255570Strasz newct->ct_luns[i] = -1; 2417255570Strasz 2418255570Strasz strlcpy(newct->ct_name, name, sizeof(newct->ct_name)); 2419255570Strasz if (alias != NULL) 2420255570Strasz strlcpy(newct->ct_alias, alias, sizeof(newct->ct_alias)); 2421255570Strasz refcount_init(&newct->ct_refcount, 1); 2422255570Strasz newct->ct_softc = softc; 2423255570Strasz TAILQ_INSERT_TAIL(&softc->targets, newct, ct_next); 2424255570Strasz mtx_unlock(&softc->lock); 2425255570Strasz 2426255570Strasz return (newct); 2427255570Strasz} 2428255570Strasz 2429255570Strasz/* 2430255570Strasz * Takes LUN from the target space and returns LUN from the CTL space. 2431255570Strasz */ 2432255570Straszstatic uint32_t 2433255570Straszcfiscsi_map_lun(void *arg, uint32_t lun) 2434255570Strasz{ 2435255570Strasz struct cfiscsi_session *cs; 2436255570Strasz 2437255570Strasz cs = arg; 2438255570Strasz 2439255570Strasz if (lun >= CTL_MAX_LUNS) { 2440255570Strasz CFISCSI_DEBUG("requested lun number %d is higher " 2441255570Strasz "than maximum %d", lun, CTL_MAX_LUNS - 1); 2442255570Strasz return (0xffffffff); 2443255570Strasz } 2444255570Strasz 2445255570Strasz if (cs->cs_target->ct_luns[lun] < 0) 2446255570Strasz return (0xffffffff); 2447255570Strasz 2448255570Strasz return (cs->cs_target->ct_luns[lun]); 2449255570Strasz} 2450255570Strasz 2451255570Straszstatic int 2452255570Straszcfiscsi_target_set_lun(struct cfiscsi_target *ct, 2453255570Strasz unsigned long lun_id, unsigned long ctl_lun_id) 2454255570Strasz{ 2455255570Strasz 2456255570Strasz if (lun_id >= CTL_MAX_LUNS) { 2457255570Strasz CFISCSI_WARN("requested lun number %ld is higher " 2458255570Strasz "than maximum %d", lun_id, CTL_MAX_LUNS - 1); 2459255570Strasz return (-1); 2460255570Strasz } 2461255570Strasz 2462255570Strasz if (ct->ct_luns[lun_id] >= 0) { 2463255570Strasz /* 2464255570Strasz * CTL calls cfiscsi_lun_enable() twice for each LUN - once 2465255570Strasz * when the LUN is created, and a second time just before 2466255570Strasz * the port is brought online; don't emit warnings 2467255570Strasz * for that case. 2468255570Strasz */ 2469255570Strasz if (ct->ct_luns[lun_id] == ctl_lun_id) 2470255570Strasz return (0); 2471255570Strasz CFISCSI_WARN("lun %ld already allocated", lun_id); 2472255570Strasz return (-1); 2473255570Strasz } 2474255570Strasz 2475255570Strasz#if 0 2476255570Strasz CFISCSI_DEBUG("adding mapping for lun %ld, target %s " 2477255570Strasz "to ctl lun %ld", lun_id, ct->ct_name, ctl_lun_id); 2478255570Strasz#endif 2479255570Strasz 2480255570Strasz ct->ct_luns[lun_id] = ctl_lun_id; 2481255570Strasz 2482255570Strasz return (0); 2483255570Strasz} 2484255570Strasz 2485255570Straszstatic int 2486255570Straszcfiscsi_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 2487255570Strasz{ 2488255570Strasz struct cfiscsi_softc *softc; 2489255570Strasz struct cfiscsi_target *ct; 2490268682Smav const char *target = NULL; 2491255570Strasz const char *lun = NULL; 2492255570Strasz unsigned long tmp; 2493255570Strasz 2494268682Smav ct = (struct cfiscsi_target *)arg; 2495268682Smav softc = ct->ct_softc; 2496255570Strasz 2497268678Smav target = ctl_get_opt(&control_softc->ctl_luns[lun_id]->be_lun->options, 2498268143Smav "cfiscsi_target"); 2499268678Smav lun = ctl_get_opt(&control_softc->ctl_luns[lun_id]->be_lun->options, 2500268143Smav "cfiscsi_lun"); 2501255570Strasz 2502255570Strasz if (target == NULL && lun == NULL) 2503255570Strasz return (0); 2504255570Strasz 2505255570Strasz if (target == NULL || lun == NULL) { 2506255570Strasz CFISCSI_WARN("lun added with cfiscsi_target, but without " 2507255570Strasz "cfiscsi_lun, or the other way around; ignoring"); 2508255570Strasz return (0); 2509255570Strasz } 2510255570Strasz 2511268682Smav if (strcmp(target, ct->ct_name) != 0) 2512255570Strasz return (0); 2513255570Strasz 2514255570Strasz tmp = strtoul(lun, NULL, 10); 2515255570Strasz cfiscsi_target_set_lun(ct, tmp, lun_id); 2516255570Strasz return (0); 2517255570Strasz} 2518255570Strasz 2519255570Straszstatic int 2520255570Straszcfiscsi_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 2521255570Strasz{ 2522255570Strasz struct cfiscsi_softc *softc; 2523255570Strasz struct cfiscsi_target *ct; 2524255570Strasz int i; 2525255570Strasz 2526268682Smav ct = (struct cfiscsi_target *)arg; 2527268682Smav softc = ct->ct_softc; 2528255570Strasz 2529255570Strasz mtx_lock(&softc->lock); 2530268682Smav for (i = 0; i < CTL_MAX_LUNS; i++) { 2531268682Smav if (ct->ct_luns[i] < 0) 2532268682Smav continue; 2533268682Smav if (ct->ct_luns[i] != lun_id) 2534268682Smav continue; 2535268682Smav ct->ct_luns[lun_id] = -1; 2536268682Smav break; 2537255570Strasz } 2538255570Strasz mtx_unlock(&softc->lock); 2539255570Strasz return (0); 2540255570Strasz} 2541255570Strasz 2542255570Straszstatic void 2543256065Straszcfiscsi_datamove_in(union ctl_io *io) 2544255570Strasz{ 2545255570Strasz struct cfiscsi_session *cs; 2546255570Strasz struct icl_pdu *request, *response; 2547255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 2548255570Strasz struct iscsi_bhs_data_in *bhsdi; 2549255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2550265490Strasz size_t len, expected_len, sg_len, buffer_offset; 2551265490Strasz const char *sg_addr; 2552255824Strasz int ctl_sg_count, error, i; 2553255570Strasz 2554255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2555255570Strasz cs = PDU_SESSION(request); 2556255570Strasz 2557255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2558255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2559255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2560255570Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2561255570Strasz 2562255570Strasz if (io->scsiio.kern_sg_entries > 0) { 2563255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2564255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 2565255570Strasz } else { 2566255570Strasz ctl_sglist = &ctl_sg_entry; 2567255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 2568255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 2569255570Strasz ctl_sg_count = 1; 2570255570Strasz } 2571255570Strasz 2572255570Strasz /* 2573265490Strasz * This is the total amount of data to be transferred within the current 2574265490Strasz * SCSI command. We need to record it so that we can properly report 2575255570Strasz * underflow/underflow. 2576255570Strasz */ 2577255570Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2578255570Strasz 2579256065Strasz /* 2580265490Strasz * This is the offset within the current SCSI command; for the first 2581265490Strasz * call to cfiscsi_datamove() it will be 0, and for subsequent ones 2582265640Smav * it will be the sum of lengths of previous ones. 2583256065Strasz */ 2584265490Strasz buffer_offset = io->scsiio.kern_rel_offset; 2585255570Strasz 2586265490Strasz /* 2587265490Strasz * This is the transfer length expected by the initiator. In theory, 2588265490Strasz * it could be different from the correct amount of data from the SCSI 2589265490Strasz * point of view, even if that doesn't make any sense. 2590265490Strasz */ 2591265490Strasz expected_len = ntohl(bhssc->bhssc_expected_data_transfer_length); 2592265490Strasz#if 0 2593265640Smav if (expected_len != io->scsiio.kern_total_len) { 2594265640Smav CFISCSI_SESSION_DEBUG(cs, "expected transfer length %zd, " 2595265640Smav "actual length %zd", expected_len, 2596265640Smav (size_t)io->scsiio.kern_total_len); 2597265640Smav } 2598265490Strasz#endif 2599265490Strasz 2600265490Strasz if (buffer_offset >= expected_len) { 2601265490Strasz#if 0 2602265490Strasz CFISCSI_SESSION_DEBUG(cs, "buffer_offset = %zd, " 2603265490Strasz "already sent the expected len", buffer_offset); 2604265490Strasz#endif 2605265490Strasz io->scsiio.be_move_done(io); 2606265490Strasz return; 2607265490Strasz } 2608265490Strasz 2609256065Strasz i = 0; 2610265490Strasz sg_addr = NULL; 2611265490Strasz sg_len = 0; 2612256065Strasz response = NULL; 2613256065Strasz bhsdi = NULL; 2614256065Strasz for (;;) { 2615256065Strasz if (response == NULL) { 2616256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2617255570Strasz if (response == NULL) { 2618255824Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2619255824Strasz "allocate memory; dropping connection"); 2620256163Strasz ctl_set_busy(&io->scsiio); 2621256163Strasz io->scsiio.be_move_done(io); 2622255824Strasz cfiscsi_session_terminate(cs); 2623255824Strasz return; 2624255824Strasz } 2625256065Strasz bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 2626256065Strasz bhsdi->bhsdi_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_IN; 2627256065Strasz bhsdi->bhsdi_initiator_task_tag = 2628256065Strasz bhssc->bhssc_initiator_task_tag; 2629256065Strasz bhsdi->bhsdi_datasn = htonl(PDU_EXPDATASN(request)); 2630256065Strasz PDU_EXPDATASN(request)++; 2631265490Strasz bhsdi->bhsdi_buffer_offset = htonl(buffer_offset); 2632256065Strasz } 2633255570Strasz 2634265490Strasz KASSERT(i < ctl_sg_count, ("i >= ctl_sg_count")); 2635265490Strasz if (sg_len == 0) { 2636265490Strasz sg_addr = ctl_sglist[i].addr; 2637265490Strasz sg_len = ctl_sglist[i].len; 2638265490Strasz KASSERT(sg_len > 0, ("sg_len <= 0")); 2639256065Strasz } 2640255570Strasz 2641265490Strasz len = sg_len; 2642265490Strasz 2643265490Strasz /* 2644265490Strasz * Truncate to maximum data segment length. 2645265490Strasz */ 2646265490Strasz KASSERT(response->ip_data_len < cs->cs_max_data_segment_length, 2647265640Smav ("ip_data_len %zd >= max_data_segment_length %zd", 2648265490Strasz response->ip_data_len, cs->cs_max_data_segment_length)); 2649265490Strasz if (response->ip_data_len + len > 2650265640Smav cs->cs_max_data_segment_length) { 2651265490Strasz len = cs->cs_max_data_segment_length - 2652256065Strasz response->ip_data_len; 2653265640Smav KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2654265640Smav len, sg_len)); 2655265640Smav } 2656265490Strasz 2657265490Strasz /* 2658265490Strasz * Truncate to expected data transfer length. 2659265490Strasz */ 2660265490Strasz KASSERT(buffer_offset + response->ip_data_len < expected_len, 2661265640Smav ("buffer_offset %zd + ip_data_len %zd >= expected_len %zd", 2662265640Smav buffer_offset, response->ip_data_len, expected_len)); 2663265490Strasz if (buffer_offset + response->ip_data_len + len > expected_len) { 2664265490Strasz CFISCSI_SESSION_DEBUG(cs, "truncating from %zd " 2665265490Strasz "to expected data transfer length %zd", 2666265490Strasz buffer_offset + response->ip_data_len + len, expected_len); 2667265490Strasz len = expected_len - (buffer_offset + response->ip_data_len); 2668265640Smav KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2669265640Smav len, sg_len)); 2670265490Strasz } 2671265490Strasz 2672265490Strasz error = icl_pdu_append_data(response, sg_addr, len, M_NOWAIT); 2673256065Strasz if (error != 0) { 2674256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2675256065Strasz "allocate memory; dropping connection"); 2676256065Strasz icl_pdu_free(response); 2677256163Strasz ctl_set_busy(&io->scsiio); 2678256163Strasz io->scsiio.be_move_done(io); 2679256065Strasz cfiscsi_session_terminate(cs); 2680256065Strasz return; 2681256065Strasz } 2682265490Strasz sg_addr += len; 2683265490Strasz sg_len -= len; 2684256065Strasz 2685265640Smav KASSERT(buffer_offset + request->ip_data_len <= expected_len, 2686265640Smav ("buffer_offset %zd + ip_data_len %zd > expected_len %zd", 2687265640Smav buffer_offset, request->ip_data_len, expected_len)); 2688265640Smav if (buffer_offset + request->ip_data_len == expected_len) { 2689256065Strasz /* 2690265490Strasz * Already have the amount of data the initiator wanted. 2691265490Strasz */ 2692265490Strasz break; 2693265490Strasz } 2694265490Strasz 2695265490Strasz if (sg_len == 0) { 2696265490Strasz /* 2697256065Strasz * End of scatter-gather segment; 2698256065Strasz * proceed to the next one... 2699256065Strasz */ 2700256065Strasz if (i == ctl_sg_count - 1) { 2701255570Strasz /* 2702256065Strasz * ... unless this was the last one. 2703255570Strasz */ 2704256065Strasz break; 2705255570Strasz } 2706256065Strasz i++; 2707255570Strasz } 2708256065Strasz 2709256065Strasz if (response->ip_data_len == cs->cs_max_data_segment_length) { 2710256065Strasz /* 2711256065Strasz * Can't stuff more data into the current PDU; 2712256065Strasz * queue it. Note that's not enough to check 2713256195Strasz * for kern_data_resid == 0 instead; there 2714256065Strasz * may be several Data-In PDUs for the final 2715256065Strasz * call to cfiscsi_datamove(), and we want 2716256065Strasz * to set the F flag only on the last of them. 2717256065Strasz */ 2718265640Smav buffer_offset += response->ip_data_len; 2719265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2720265490Strasz buffer_offset == expected_len) 2721255570Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2722255570Strasz cfiscsi_pdu_queue(response); 2723256065Strasz response = NULL; 2724256065Strasz bhsdi = NULL; 2725255570Strasz } 2726256065Strasz } 2727256065Strasz if (response != NULL) { 2728265640Smav buffer_offset += response->ip_data_len; 2729265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2730265490Strasz buffer_offset == expected_len) 2731256065Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2732256065Strasz KASSERT(response->ip_data_len > 0, ("sending empty Data-In")); 2733256065Strasz cfiscsi_pdu_queue(response); 2734256065Strasz } 2735255570Strasz 2736256065Strasz io->scsiio.be_move_done(io); 2737256065Strasz} 2738255570Strasz 2739256065Straszstatic void 2740256065Straszcfiscsi_datamove_out(union ctl_io *io) 2741256065Strasz{ 2742256065Strasz struct cfiscsi_session *cs; 2743256065Strasz struct icl_pdu *request, *response; 2744256065Strasz const struct iscsi_bhs_scsi_command *bhssc; 2745256065Strasz struct iscsi_bhs_r2t *bhsr2t; 2746256065Strasz struct cfiscsi_data_wait *cdw; 2747256065Strasz uint32_t target_transfer_tag; 2748256065Strasz bool done; 2749256065Strasz 2750256065Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2751256065Strasz cs = PDU_SESSION(request); 2752256065Strasz 2753256065Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2754256065Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2755256065Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2756256065Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2757256065Strasz 2758256065Strasz /* 2759256065Strasz * We need to record it so that we can properly report 2760256065Strasz * underflow/underflow. 2761256065Strasz */ 2762256065Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2763256065Strasz 2764265640Smav /* 2765265640Smav * We hadn't received anything during this datamove yet. 2766265640Smav */ 2767265640Smav io->scsiio.ext_data_filled = 0; 2768265640Smav 2769265497Strasz target_transfer_tag = 2770265497Strasz atomic_fetchadd_32(&cs->cs_target_transfer_tag, 1); 2771256065Strasz 2772255570Strasz#if 0 2773256065Strasz CFISCSI_SESSION_DEBUG(cs, "expecting Data-Out with initiator " 2774256065Strasz "task tag 0x%x, target transfer tag 0x%x", 2775256065Strasz bhssc->bhssc_initiator_task_tag, target_transfer_tag); 2776255570Strasz#endif 2777256065Strasz cdw = uma_zalloc(cfiscsi_data_wait_zone, M_NOWAIT | M_ZERO); 2778256065Strasz if (cdw == NULL) { 2779256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2780256065Strasz "allocate memory; dropping connection"); 2781256163Strasz ctl_set_busy(&io->scsiio); 2782256163Strasz io->scsiio.be_move_done(io); 2783256065Strasz cfiscsi_session_terminate(cs); 2784256163Strasz return; 2785256065Strasz } 2786256065Strasz cdw->cdw_ctl_io = io; 2787265489Strasz cdw->cdw_target_transfer_tag = target_transfer_tag; 2788256065Strasz cdw->cdw_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2789256065Strasz 2790268141Smav if (cs->cs_immediate_data && io->scsiio.kern_rel_offset < 2791268141Smav icl_pdu_data_segment_length(request)) { 2792256065Strasz done = cfiscsi_handle_data_segment(request, cdw); 2793256065Strasz if (done) { 2794256065Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2795256065Strasz io->scsiio.be_move_done(io); 2796256065Strasz return; 2797255837Strasz } 2798256065Strasz } 2799255570Strasz 2800256065Strasz CFISCSI_SESSION_LOCK(cs); 2801256065Strasz TAILQ_INSERT_TAIL(&cs->cs_waiting_for_data_out, cdw, cdw_next); 2802256065Strasz CFISCSI_SESSION_UNLOCK(cs); 2803255570Strasz 2804256065Strasz /* 2805256065Strasz * XXX: We should limit the number of outstanding R2T PDUs 2806256065Strasz * per task to MaxOutstandingR2T. 2807256065Strasz */ 2808256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2809256065Strasz if (response == NULL) { 2810256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2811256065Strasz "allocate memory; dropping connection"); 2812256163Strasz ctl_set_busy(&io->scsiio); 2813256163Strasz io->scsiio.be_move_done(io); 2814256065Strasz cfiscsi_session_terminate(cs); 2815256163Strasz return; 2816255570Strasz } 2817256065Strasz bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 2818256065Strasz bhsr2t->bhsr2t_opcode = ISCSI_BHS_OPCODE_R2T; 2819256065Strasz bhsr2t->bhsr2t_flags = 0x80; 2820256065Strasz bhsr2t->bhsr2t_lun = bhssc->bhssc_lun; 2821256065Strasz bhsr2t->bhsr2t_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2822265489Strasz bhsr2t->bhsr2t_target_transfer_tag = target_transfer_tag; 2823256065Strasz /* 2824256065Strasz * XXX: Here we assume that cfiscsi_datamove() won't ever 2825256065Strasz * be running concurrently on several CPUs for a given 2826256065Strasz * command. 2827256065Strasz */ 2828256065Strasz bhsr2t->bhsr2t_r2tsn = htonl(PDU_R2TSN(request)); 2829256065Strasz PDU_R2TSN(request)++; 2830256065Strasz /* 2831256065Strasz * This is the offset within the current SCSI command; 2832256065Strasz * i.e. for the first call of datamove(), it will be 0, 2833256065Strasz * and for subsequent ones it will be the sum of lengths 2834256065Strasz * of previous ones. 2835256065Strasz * 2836256065Strasz * The ext_data_filled is to account for unsolicited 2837256065Strasz * (immediate) data that might have already arrived. 2838256065Strasz */ 2839256065Strasz bhsr2t->bhsr2t_buffer_offset = 2840256065Strasz htonl(io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled); 2841256065Strasz /* 2842256065Strasz * This is the total length (sum of S/G lengths) this call 2843256065Strasz * to cfiscsi_datamove() is supposed to handle. 2844256065Strasz * 2845256065Strasz * XXX: Limit it to MaxBurstLength. 2846256065Strasz */ 2847256065Strasz bhsr2t->bhsr2t_desired_data_transfer_length = 2848256065Strasz htonl(io->scsiio.kern_data_len - io->scsiio.ext_data_filled); 2849256065Strasz cfiscsi_pdu_queue(response); 2850255570Strasz} 2851255570Strasz 2852255570Straszstatic void 2853256065Straszcfiscsi_datamove(union ctl_io *io) 2854256065Strasz{ 2855256065Strasz 2856256065Strasz if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 2857256065Strasz cfiscsi_datamove_in(io); 2858256065Strasz else 2859256065Strasz cfiscsi_datamove_out(io); 2860256065Strasz} 2861256065Strasz 2862256065Straszstatic void 2863255570Straszcfiscsi_scsi_command_done(union ctl_io *io) 2864255570Strasz{ 2865255570Strasz struct icl_pdu *request, *response; 2866255570Strasz struct iscsi_bhs_scsi_command *bhssc; 2867255570Strasz struct iscsi_bhs_scsi_response *bhssr; 2868255570Strasz#ifdef DIAGNOSTIC 2869255570Strasz struct cfiscsi_data_wait *cdw; 2870255570Strasz#endif 2871255570Strasz struct cfiscsi_session *cs; 2872255570Strasz uint16_t sense_length; 2873255570Strasz 2874255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2875255570Strasz cs = PDU_SESSION(request); 2876255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2877255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2878255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2879255570Strasz ("replying to wrong opcode 0x%x", bhssc->bhssc_opcode)); 2880255570Strasz 2881255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 2882255570Strasz // bhssc->bhssc_initiator_task_tag); 2883255570Strasz 2884255570Strasz#ifdef DIAGNOSTIC 2885255570Strasz CFISCSI_SESSION_LOCK(cs); 2886255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) 2887255570Strasz KASSERT(bhssc->bhssc_initiator_task_tag != 2888255570Strasz cdw->cdw_initiator_task_tag, ("dangling cdw")); 2889255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2890255570Strasz#endif 2891255570Strasz 2892268554Smav /* 2893268554Smav * Do not return status for aborted commands. 2894268554Smav * There are exceptions, but none supported by CTL yet. 2895268554Smav */ 2896268554Smav if (io->io_hdr.status == CTL_CMD_ABORTED) { 2897268554Smav ctl_free_io(io); 2898268554Smav icl_pdu_free(request); 2899268554Smav return; 2900268554Smav } 2901268554Smav 2902255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2903255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 2904255570Strasz bhssr->bhssr_opcode = ISCSI_BHS_OPCODE_SCSI_RESPONSE; 2905255570Strasz bhssr->bhssr_flags = 0x80; 2906255570Strasz /* 2907255570Strasz * XXX: We don't deal with bidirectional under/overflows; 2908255570Strasz * does anything actually support those? 2909255570Strasz */ 2910255570Strasz if (PDU_TOTAL_TRANSFER_LEN(request) < 2911255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2912255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_UNDERFLOW; 2913255570Strasz bhssr->bhssr_residual_count = 2914255570Strasz htonl(ntohl(bhssc->bhssc_expected_data_transfer_length) - 2915255570Strasz PDU_TOTAL_TRANSFER_LEN(request)); 2916255570Strasz //CFISCSI_SESSION_DEBUG(cs, "underflow; residual count %d", 2917255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2918255570Strasz } else if (PDU_TOTAL_TRANSFER_LEN(request) > 2919255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2920255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_OVERFLOW; 2921255570Strasz bhssr->bhssr_residual_count = 2922255570Strasz htonl(PDU_TOTAL_TRANSFER_LEN(request) - 2923255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)); 2924255570Strasz //CFISCSI_SESSION_DEBUG(cs, "overflow; residual count %d", 2925255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2926255570Strasz } 2927255570Strasz bhssr->bhssr_response = BHSSR_RESPONSE_COMMAND_COMPLETED; 2928255570Strasz bhssr->bhssr_status = io->scsiio.scsi_status; 2929255570Strasz bhssr->bhssr_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2930255570Strasz bhssr->bhssr_expdatasn = htonl(PDU_EXPDATASN(request)); 2931255570Strasz 2932255570Strasz if (io->scsiio.sense_len > 0) { 2933255570Strasz#if 0 2934255570Strasz CFISCSI_SESSION_DEBUG(cs, "returning %d bytes of sense data", 2935255570Strasz io->scsiio.sense_len); 2936255570Strasz#endif 2937255570Strasz sense_length = htons(io->scsiio.sense_len); 2938255570Strasz icl_pdu_append_data(response, 2939255570Strasz &sense_length, sizeof(sense_length), M_WAITOK); 2940255570Strasz icl_pdu_append_data(response, 2941255570Strasz &io->scsiio.sense_data, io->scsiio.sense_len, M_WAITOK); 2942255570Strasz } 2943255570Strasz 2944255570Strasz ctl_free_io(io); 2945255570Strasz icl_pdu_free(request); 2946255570Strasz cfiscsi_pdu_queue(response); 2947255570Strasz} 2948255570Strasz 2949255570Straszstatic void 2950255570Straszcfiscsi_task_management_done(union ctl_io *io) 2951255570Strasz{ 2952255570Strasz struct icl_pdu *request, *response; 2953255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 2954255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 2955255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 2956255570Strasz struct cfiscsi_session *cs; 2957255570Strasz 2958255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2959255570Strasz cs = PDU_SESSION(request); 2960255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2961255570Strasz KASSERT((bhstmr->bhstmr_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2962255570Strasz ISCSI_BHS_OPCODE_TASK_REQUEST, 2963255570Strasz ("replying to wrong opcode 0x%x", bhstmr->bhstmr_opcode)); 2964255570Strasz 2965255570Strasz#if 0 2966255570Strasz CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x; referenced task tag 0x%x", 2967255570Strasz bhstmr->bhstmr_initiator_task_tag, 2968255570Strasz bhstmr->bhstmr_referenced_task_tag); 2969255570Strasz#endif 2970255570Strasz 2971255570Strasz if ((bhstmr->bhstmr_function & ~0x80) == 2972255570Strasz BHSTMR_FUNCTION_ABORT_TASK) { 2973255570Strasz /* 2974255570Strasz * Make sure we no longer wait for Data-Out for this command. 2975255570Strasz */ 2976255570Strasz CFISCSI_SESSION_LOCK(cs); 2977255570Strasz TAILQ_FOREACH_SAFE(cdw, 2978255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 2979255570Strasz if (bhstmr->bhstmr_referenced_task_tag != 2980255570Strasz cdw->cdw_initiator_task_tag) 2981255570Strasz continue; 2982255570Strasz 2983255570Strasz#if 0 2984255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task " 2985255570Strasz "tag 0x%x", bhstmr->bhstmr_initiator_task_tag); 2986255570Strasz#endif 2987255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, 2988255570Strasz cdw, cdw_next); 2989255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 2990255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2991255570Strasz } 2992255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2993255570Strasz } 2994255570Strasz 2995255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2996255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 2997255570Strasz response->ip_bhs; 2998255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 2999255570Strasz bhstmr2->bhstmr_flags = 0x80; 3000255570Strasz if (io->io_hdr.status == CTL_SUCCESS) { 3001255570Strasz bhstmr2->bhstmr_response = BHSTMR_RESPONSE_FUNCTION_COMPLETE; 3002255570Strasz } else { 3003255570Strasz /* 3004255570Strasz * XXX: How to figure out what exactly went wrong? iSCSI spec 3005255570Strasz * expects us to provide detailed error, e.g. "Task does 3006255570Strasz * not exist" or "LUN does not exist". 3007255570Strasz */ 3008255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED"); 3009255570Strasz bhstmr2->bhstmr_response = 3010255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 3011255570Strasz } 3012255570Strasz bhstmr2->bhstmr_initiator_task_tag = bhstmr->bhstmr_initiator_task_tag; 3013255570Strasz 3014255570Strasz ctl_free_io(io); 3015255570Strasz icl_pdu_free(request); 3016255570Strasz cfiscsi_pdu_queue(response); 3017255570Strasz} 3018255570Strasz 3019255570Straszstatic void 3020255570Straszcfiscsi_done(union ctl_io *io) 3021255570Strasz{ 3022255570Strasz struct icl_pdu *request; 3023255570Strasz struct cfiscsi_session *cs; 3024255570Strasz 3025255570Strasz KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 3026255570Strasz ("invalid CTL status %#x", io->io_hdr.status)); 3027255570Strasz 3028255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 3029255570Strasz if (request == NULL) { 3030255570Strasz /* 3031255570Strasz * Implicit task termination has just completed; nothing to do. 3032255570Strasz */ 3033255570Strasz return; 3034255570Strasz } 3035255570Strasz 3036255570Strasz cs = PDU_SESSION(request); 3037255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 3038255570Strasz 3039255570Strasz switch (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) { 3040255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 3041255570Strasz cfiscsi_scsi_command_done(io); 3042255570Strasz break; 3043255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 3044255570Strasz cfiscsi_task_management_done(io); 3045255570Strasz break; 3046255570Strasz default: 3047255570Strasz panic("cfiscsi_done called with wrong opcode 0x%x", 3048255570Strasz request->ip_bhs->bhs_opcode); 3049255570Strasz } 3050255570Strasz} 3051