1255570Strasz/*- 2255570Strasz * Copyright (c) 2012 The FreeBSD Foundation 3255570Strasz * All rights reserved. 4255570Strasz * 5255570Strasz * This software was developed by Edward Tomasz Napierala under sponsorship 6255570Strasz * from the FreeBSD Foundation. 7255570Strasz * 8255570Strasz * Redistribution and use in source and binary forms, with or without 9255570Strasz * modification, are permitted provided that the following conditions 10255570Strasz * are met: 11255570Strasz * 1. Redistributions of source code must retain the above copyright 12255570Strasz * notice, this list of conditions and the following disclaimer. 13255570Strasz * 2. Redistributions in binary form must reproduce the above copyright 14255570Strasz * notice, this list of conditions and the following disclaimer in the 15255570Strasz * documentation and/or other materials provided with the distribution. 16255570Strasz * 17255570Strasz * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18255570Strasz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19255570Strasz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20255570Strasz * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21255570Strasz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22255570Strasz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23255570Strasz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24255570Strasz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25255570Strasz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26255570Strasz * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27255570Strasz * SUCH DAMAGE. 28255570Strasz * 29255570Strasz * $FreeBSD$ 30255570Strasz */ 31255570Strasz 32255570Strasz/* 33255570Strasz * CTL frontend for the iSCSI protocol. 34255570Strasz */ 35255570Strasz 36255570Strasz#include <sys/cdefs.h> 37255570Strasz__FBSDID("$FreeBSD$"); 38255570Strasz 39255570Strasz#include <sys/param.h> 40255570Strasz#include <sys/capability.h> 41255570Strasz#include <sys/condvar.h> 42255570Strasz#include <sys/file.h> 43255570Strasz#include <sys/kernel.h> 44255570Strasz#include <sys/kthread.h> 45255570Strasz#include <sys/lock.h> 46255570Strasz#include <sys/malloc.h> 47255570Strasz#include <sys/module.h> 48255570Strasz#include <sys/mutex.h> 49255570Strasz#include <sys/queue.h> 50255570Strasz#include <sys/sbuf.h> 51255570Strasz#include <sys/sysctl.h> 52255570Strasz#include <sys/systm.h> 53255570Strasz#include <sys/uio.h> 54255570Strasz#include <sys/unistd.h> 55255570Strasz#include <vm/uma.h> 56255570Strasz 57255570Strasz#include <cam/scsi/scsi_all.h> 58255570Strasz#include <cam/scsi/scsi_da.h> 59255570Strasz#include <cam/ctl/ctl_io.h> 60255570Strasz#include <cam/ctl/ctl.h> 61255570Strasz#include <cam/ctl/ctl_backend.h> 62256163Strasz#include <cam/ctl/ctl_error.h> 63255570Strasz#include <cam/ctl/ctl_frontend.h> 64255570Strasz#include <cam/ctl/ctl_frontend_internal.h> 65255570Strasz#include <cam/ctl/ctl_debug.h> 66255570Strasz#include <cam/ctl/ctl_ha.h> 67255570Strasz#include <cam/ctl/ctl_ioctl.h> 68255570Strasz#include <cam/ctl/ctl_private.h> 69255570Strasz 70255570Strasz#include "../../dev/iscsi/icl.h" 71255570Strasz#include "../../dev/iscsi/iscsi_proto.h" 72255570Strasz#include "ctl_frontend_iscsi.h" 73255570Strasz 74255570Strasz#ifdef ICL_KERNEL_PROXY 75255570Strasz#include <sys/socketvar.h> 76255570Strasz#endif 77255570Strasz 78255570Straszstatic MALLOC_DEFINE(M_CFISCSI, "cfiscsi", "Memory used for CTL iSCSI frontend"); 79255570Straszstatic uma_zone_t cfiscsi_data_wait_zone; 80255570Strasz 81255570StraszSYSCTL_NODE(_kern_cam_ctl, OID_AUTO, iscsi, CTLFLAG_RD, 0, 82255570Strasz "CAM Target Layer iSCSI Frontend"); 83255570Straszstatic int debug = 3; 84255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.debug", &debug); 85255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, debug, CTLFLAG_RW, 86255570Strasz &debug, 1, "Enable debug messages"); 87255570Straszstatic int ping_timeout = 5; 88255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.ping_timeout", &ping_timeout); 89255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RW, 90255570Strasz &ping_timeout, 5, "Interval between ping (NOP-Out) requests, in seconds"); 91255570Straszstatic int login_timeout = 60; 92255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.login_timeout", &login_timeout); 93255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, login_timeout, CTLFLAG_RW, 94255570Strasz &login_timeout, 60, "Time to wait for ctld(8) to finish Login Phase, in seconds"); 95255570Straszstatic int maxcmdsn_delta = 256; 96255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.maxcmdsn_delta", &maxcmdsn_delta); 97255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, maxcmdsn_delta, CTLFLAG_RW, 98255570Strasz &maxcmdsn_delta, 256, "Number of commands the initiator can send " 99255570Strasz "without confirmation"); 100255570Strasz 101255570Strasz#define CFISCSI_DEBUG(X, ...) \ 102255570Strasz if (debug > 1) { \ 103255570Strasz printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 104255570Strasz } while (0) 105255570Strasz 106255570Strasz#define CFISCSI_WARN(X, ...) \ 107255570Strasz if (debug > 0) { \ 108255570Strasz printf("WARNING: %s: " X "\n", \ 109255570Strasz __func__, ## __VA_ARGS__); \ 110255570Strasz } while (0) 111255570Strasz 112255570Strasz#define CFISCSI_SESSION_DEBUG(S, X, ...) \ 113255570Strasz if (debug > 1) { \ 114255570Strasz printf("%s: %s (%s): " X "\n", \ 115255570Strasz __func__, S->cs_initiator_addr, \ 116255570Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 117255570Strasz } while (0) 118255570Strasz 119255570Strasz#define CFISCSI_SESSION_WARN(S, X, ...) \ 120255570Strasz if (debug > 0) { \ 121255570Strasz printf("WARNING: %s (%s): " X "\n", \ 122255570Strasz S->cs_initiator_addr, \ 123255570Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 124255570Strasz } while (0) 125255570Strasz 126255570Strasz#define CFISCSI_SESSION_LOCK(X) mtx_lock(&X->cs_lock) 127255570Strasz#define CFISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->cs_lock) 128255570Strasz#define CFISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->cs_lock, MA_OWNED) 129255570Strasz 130255570Strasz#define CONN_SESSION(X) ((struct cfiscsi_session *)(X)->ic_prv0) 131255570Strasz#define PDU_SESSION(X) CONN_SESSION((X)->ip_conn) 132255570Strasz#define PDU_EXPDATASN(X) (X)->ip_prv0 133255570Strasz#define PDU_TOTAL_TRANSFER_LEN(X) (X)->ip_prv1 134255570Strasz#define PDU_R2TSN(X) (X)->ip_prv2 135255570Strasz 136255570Straszint cfiscsi_init(void); 137255570Straszstatic void cfiscsi_online(void *arg); 138255570Straszstatic void cfiscsi_offline(void *arg); 139255570Straszstatic int cfiscsi_targ_enable(void *arg, struct ctl_id targ_id); 140255570Straszstatic int cfiscsi_targ_disable(void *arg, struct ctl_id targ_id); 141255570Straszstatic int cfiscsi_lun_enable(void *arg, 142255570Strasz struct ctl_id target_id, int lun_id); 143255570Straszstatic int cfiscsi_lun_disable(void *arg, 144255570Strasz struct ctl_id target_id, int lun_id); 145255570Straszstatic int cfiscsi_ioctl(struct cdev *dev, 146255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td); 147255570Straszstatic int cfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len); 148255570Straszstatic void cfiscsi_datamove(union ctl_io *io); 149255570Straszstatic void cfiscsi_done(union ctl_io *io); 150255570Straszstatic uint32_t cfiscsi_map_lun(void *arg, uint32_t lun); 151255848Straszstatic bool cfiscsi_pdu_update_cmdsn(const struct icl_pdu *request); 152255570Straszstatic void cfiscsi_pdu_handle_nop_out(struct icl_pdu *request); 153255570Straszstatic void cfiscsi_pdu_handle_scsi_command(struct icl_pdu *request); 154255570Straszstatic void cfiscsi_pdu_handle_task_request(struct icl_pdu *request); 155255570Straszstatic void cfiscsi_pdu_handle_data_out(struct icl_pdu *request); 156255570Straszstatic void cfiscsi_pdu_handle_logout_request(struct icl_pdu *request); 157255570Straszstatic void cfiscsi_session_terminate(struct cfiscsi_session *cs); 158255570Straszstatic struct cfiscsi_target *cfiscsi_target_find(struct cfiscsi_softc 159255570Strasz *softc, const char *name); 160255570Straszstatic void cfiscsi_target_release(struct cfiscsi_target *ct); 161255570Straszstatic void cfiscsi_session_delete(struct cfiscsi_session *cs); 162255570Strasz 163255570Straszstatic struct cfiscsi_softc cfiscsi_softc; 164255570Straszextern struct ctl_softc *control_softc; 165255570Strasz 166255570Straszstatic int cfiscsi_module_event_handler(module_t, int /*modeventtype_t*/, void *); 167255570Strasz 168255570Straszstatic moduledata_t cfiscsi_moduledata = { 169255570Strasz "ctlcfiscsi", 170255570Strasz cfiscsi_module_event_handler, 171255570Strasz NULL 172255570Strasz}; 173255570Strasz 174255570StraszDECLARE_MODULE(ctlcfiscsi, cfiscsi_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH); 175255570StraszMODULE_VERSION(ctlcfiscsi, 1); 176255570StraszMODULE_DEPEND(ctlcfiscsi, ctl, 1, 1, 1); 177255570StraszMODULE_DEPEND(ctlcfiscsi, icl, 1, 1, 1); 178255570Strasz 179255570Straszstatic struct icl_pdu * 180255570Straszcfiscsi_pdu_new_response(struct icl_pdu *request, int flags) 181255570Strasz{ 182255570Strasz 183255570Strasz return (icl_pdu_new_bhs(request->ip_conn, flags)); 184255570Strasz} 185255570Strasz 186255848Straszstatic bool 187255570Straszcfiscsi_pdu_update_cmdsn(const struct icl_pdu *request) 188255570Strasz{ 189255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 190255570Strasz struct cfiscsi_session *cs; 191255570Strasz uint32_t cmdsn, expstatsn; 192255570Strasz 193255570Strasz cs = PDU_SESSION(request); 194255570Strasz 195255570Strasz /* 196255570Strasz * Every incoming PDU - not just NOP-Out - resets the ping timer. 197255570Strasz * The purpose of the timeout is to reset the connection when it stalls; 198255570Strasz * we don't want this to happen when NOP-In or NOP-Out ends up delayed 199255570Strasz * in some queue. 200255570Strasz * 201255570Strasz * XXX: Locking? 202255570Strasz */ 203255570Strasz cs->cs_timeout = 0; 204255570Strasz 205255570Strasz /* 206255570Strasz * Data-Out PDUs don't contain CmdSN. 207255570Strasz */ 208255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 209255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 210255848Strasz return (false); 211255570Strasz 212255570Strasz /* 213255570Strasz * We're only using fields common for all the request 214255570Strasz * (initiator -> target) PDUs. 215255570Strasz */ 216255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 217255570Strasz cmdsn = ntohl(bhssc->bhssc_cmdsn); 218255570Strasz expstatsn = ntohl(bhssc->bhssc_expstatsn); 219255570Strasz 220255570Strasz CFISCSI_SESSION_LOCK(cs); 221255570Strasz#if 0 222255570Strasz if (expstatsn != cs->cs_statsn) { 223255570Strasz CFISCSI_SESSION_DEBUG(cs, "received PDU with ExpStatSN %d, " 224255570Strasz "while current StatSN is %d", expstatsn, 225255570Strasz cs->cs_statsn); 226255570Strasz } 227255570Strasz#endif 228255570Strasz 229255570Strasz /* 230255848Strasz * The target MUST silently ignore any non-immediate command outside 231255848Strasz * of this range. 232255570Strasz */ 233255848Strasz if (cmdsn < cs->cs_cmdsn || cmdsn > cs->cs_cmdsn + maxcmdsn_delta) { 234255848Strasz CFISCSI_SESSION_UNLOCK(cs); 235255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with CmdSN %d, " 236255570Strasz "while expected CmdSN was %d", cmdsn, cs->cs_cmdsn); 237255848Strasz return (true); 238255570Strasz } 239255570Strasz 240255570Strasz if ((request->ip_bhs->bhs_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 241255570Strasz cs->cs_cmdsn++; 242255570Strasz 243255570Strasz CFISCSI_SESSION_UNLOCK(cs); 244255848Strasz 245255848Strasz return (false); 246255570Strasz} 247255570Strasz 248255570Straszstatic void 249255570Straszcfiscsi_pdu_handle(struct icl_pdu *request) 250255570Strasz{ 251255570Strasz struct cfiscsi_session *cs; 252255848Strasz bool ignore; 253255570Strasz 254255570Strasz cs = PDU_SESSION(request); 255255570Strasz 256255848Strasz ignore = cfiscsi_pdu_update_cmdsn(request); 257255848Strasz if (ignore) { 258255848Strasz icl_pdu_free(request); 259255848Strasz return; 260255848Strasz } 261255570Strasz 262255570Strasz /* 263255570Strasz * Handle the PDU; this includes e.g. receiving the remaining 264255570Strasz * part of PDU and submitting the SCSI command to CTL 265255570Strasz * or queueing a reply. The handling routine is responsible 266255570Strasz * for freeing the PDU when it's no longer needed. 267255570Strasz */ 268255570Strasz switch (request->ip_bhs->bhs_opcode & 269255570Strasz ~ISCSI_BHS_OPCODE_IMMEDIATE) { 270255570Strasz case ISCSI_BHS_OPCODE_NOP_OUT: 271255570Strasz cfiscsi_pdu_handle_nop_out(request); 272255570Strasz break; 273255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 274255570Strasz cfiscsi_pdu_handle_scsi_command(request); 275255570Strasz break; 276255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 277255570Strasz cfiscsi_pdu_handle_task_request(request); 278255570Strasz break; 279255570Strasz case ISCSI_BHS_OPCODE_SCSI_DATA_OUT: 280255570Strasz cfiscsi_pdu_handle_data_out(request); 281255570Strasz break; 282255570Strasz case ISCSI_BHS_OPCODE_LOGOUT_REQUEST: 283255570Strasz cfiscsi_pdu_handle_logout_request(request); 284255570Strasz break; 285255570Strasz default: 286255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with unsupported " 287255570Strasz "opcode 0x%x; dropping connection", 288255570Strasz request->ip_bhs->bhs_opcode); 289256197Strasz icl_pdu_free(request); 290255570Strasz cfiscsi_session_terminate(cs); 291255570Strasz } 292255570Strasz 293255570Strasz} 294255570Strasz 295255570Straszstatic void 296255570Straszcfiscsi_receive_callback(struct icl_pdu *request) 297255570Strasz{ 298255570Strasz struct cfiscsi_session *cs; 299255570Strasz 300255570Strasz cs = PDU_SESSION(request); 301255570Strasz 302255570Strasz#ifdef ICL_KERNEL_PROXY 303255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 304255570Strasz if (cs->cs_login_pdu == NULL) 305255570Strasz cs->cs_login_pdu = request; 306255570Strasz else 307255570Strasz icl_pdu_free(request); 308255570Strasz cv_signal(&cs->cs_login_cv); 309255570Strasz return; 310255570Strasz } 311255570Strasz#endif 312255570Strasz 313255570Strasz cfiscsi_pdu_handle(request); 314255570Strasz} 315255570Strasz 316255570Straszstatic void 317255570Straszcfiscsi_error_callback(struct icl_conn *ic) 318255570Strasz{ 319255570Strasz struct cfiscsi_session *cs; 320255570Strasz 321255570Strasz cs = CONN_SESSION(ic); 322255570Strasz 323255570Strasz CFISCSI_SESSION_WARN(cs, "connection error; dropping connection"); 324255570Strasz cfiscsi_session_terminate(cs); 325255570Strasz} 326255570Strasz 327255570Straszstatic int 328255570Straszcfiscsi_pdu_prepare(struct icl_pdu *response) 329255570Strasz{ 330255570Strasz struct cfiscsi_session *cs; 331255570Strasz struct iscsi_bhs_scsi_response *bhssr; 332255570Strasz bool advance_statsn = true; 333255570Strasz 334255570Strasz cs = PDU_SESSION(response); 335255570Strasz 336255570Strasz CFISCSI_SESSION_LOCK_ASSERT(cs); 337255570Strasz 338255570Strasz /* 339255570Strasz * We're only using fields common for all the response 340255570Strasz * (target -> initiator) PDUs. 341255570Strasz */ 342255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 343255570Strasz 344255570Strasz /* 345255570Strasz * 10.8.3: "The StatSN for this connection is not advanced 346255570Strasz * after this PDU is sent." 347255570Strasz */ 348255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_R2T) 349255570Strasz advance_statsn = false; 350255570Strasz 351255570Strasz /* 352255570Strasz * 10.19.2: "However, when the Initiator Task Tag is set to 0xffffffff, 353255570Strasz * StatSN for the connection is not advanced after this PDU is sent." 354255570Strasz */ 355255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_NOP_IN && 356255570Strasz bhssr->bhssr_initiator_task_tag == 0xffffffff) 357255570Strasz advance_statsn = false; 358255570Strasz 359255570Strasz /* 360255570Strasz * See the comment below - StatSN is not meaningful and must 361255570Strasz * not be advanced. 362255570Strasz */ 363255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_SCSI_DATA_IN) 364255570Strasz advance_statsn = false; 365255570Strasz 366255570Strasz /* 367255570Strasz * 10.7.3: "The fields StatSN, Status, and Residual Count 368255570Strasz * only have meaningful content if the S bit is set to 1." 369255570Strasz */ 370255570Strasz if (bhssr->bhssr_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN) 371255570Strasz bhssr->bhssr_statsn = htonl(cs->cs_statsn); 372255570Strasz bhssr->bhssr_expcmdsn = htonl(cs->cs_cmdsn); 373255570Strasz bhssr->bhssr_maxcmdsn = htonl(cs->cs_cmdsn + maxcmdsn_delta); 374255570Strasz 375255570Strasz if (advance_statsn) 376255570Strasz cs->cs_statsn++; 377255570Strasz 378255570Strasz return (0); 379255570Strasz} 380255570Strasz 381255570Straszstatic void 382255570Straszcfiscsi_pdu_queue(struct icl_pdu *response) 383255570Strasz{ 384255570Strasz struct cfiscsi_session *cs; 385255570Strasz 386255570Strasz cs = PDU_SESSION(response); 387255570Strasz 388255570Strasz CFISCSI_SESSION_LOCK(cs); 389255570Strasz cfiscsi_pdu_prepare(response); 390255570Strasz icl_pdu_queue(response); 391255570Strasz CFISCSI_SESSION_UNLOCK(cs); 392255570Strasz} 393255570Strasz 394255570Straszstatic uint32_t 395255570Straszcfiscsi_decode_lun(uint64_t encoded) 396255570Strasz{ 397255570Strasz uint8_t lun[8]; 398255570Strasz uint32_t result; 399255570Strasz 400255570Strasz /* 401255570Strasz * The LUN field in iSCSI PDUs may look like an ordinary 64 bit number, 402255570Strasz * but is in fact an evil, multidimensional structure defined 403255570Strasz * in SCSI Architecture Model 5 (SAM-5), section 4.6. 404255570Strasz */ 405255570Strasz memcpy(lun, &encoded, sizeof(lun)); 406255570Strasz switch (lun[0] & 0xC0) { 407255570Strasz case 0x00: 408255570Strasz if ((lun[0] & 0x3f) != 0 || lun[2] != 0 || lun[3] != 0 || 409255570Strasz lun[4] != 0 || lun[5] != 0 || lun[6] != 0 || lun[7] != 0) { 410255570Strasz CFISCSI_WARN("malformed LUN " 411255570Strasz "(peripheral device addressing method): 0x%jx", 412255570Strasz (uintmax_t)encoded); 413255570Strasz result = 0xffffffff; 414255570Strasz break; 415255570Strasz } 416255570Strasz result = lun[1]; 417255570Strasz break; 418255570Strasz case 0x40: 419255570Strasz if (lun[2] != 0 || lun[3] != 0 || lun[4] != 0 || lun[5] != 0 || 420255570Strasz lun[6] != 0 || lun[7] != 0) { 421255570Strasz CFISCSI_WARN("malformed LUN " 422255570Strasz "(flat address space addressing method): 0x%jx", 423255570Strasz (uintmax_t)encoded); 424255570Strasz result = 0xffffffff; 425255570Strasz break; 426255570Strasz } 427255570Strasz result = ((lun[0] & 0x3f) << 8) + lun[1]; 428255570Strasz break; 429255570Strasz case 0xC0: 430255570Strasz if (lun[0] != 0xD2 || lun[4] != 0 || lun[5] != 0 || 431255570Strasz lun[6] != 0 || lun[7] != 0) { 432255570Strasz CFISCSI_WARN("malformed LUN (extended flat " 433255570Strasz "address space addressing method): 0x%jx", 434255570Strasz (uintmax_t)encoded); 435255570Strasz result = 0xffffffff; 436255570Strasz break; 437255570Strasz } 438255570Strasz result = (lun[1] << 16) + (lun[2] << 8) + lun[3]; 439255570Strasz default: 440255570Strasz CFISCSI_WARN("unsupported LUN format 0x%jx", 441255570Strasz (uintmax_t)encoded); 442255570Strasz result = 0xffffffff; 443255570Strasz break; 444255570Strasz } 445255570Strasz 446255570Strasz return (result); 447255570Strasz} 448255570Strasz 449255570Straszstatic void 450255570Straszcfiscsi_pdu_handle_nop_out(struct icl_pdu *request) 451255570Strasz{ 452255570Strasz struct cfiscsi_session *cs; 453255570Strasz struct iscsi_bhs_nop_out *bhsno; 454255570Strasz struct iscsi_bhs_nop_in *bhsni; 455255570Strasz struct icl_pdu *response; 456256187Strasz void *data = NULL; 457256187Strasz size_t datasize; 458256187Strasz int error; 459255570Strasz 460255570Strasz cs = PDU_SESSION(request); 461255570Strasz bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 462255570Strasz 463255570Strasz if (bhsno->bhsno_initiator_task_tag == 0xffffffff) { 464255570Strasz /* 465255570Strasz * Nothing to do, iscsi_pdu_update_statsn() already 466255570Strasz * zeroed the timeout. 467255570Strasz */ 468255570Strasz icl_pdu_free(request); 469255570Strasz return; 470255570Strasz } 471255570Strasz 472256187Strasz datasize = icl_pdu_data_segment_length(request); 473256187Strasz if (datasize > 0) { 474256187Strasz data = malloc(datasize, M_CFISCSI, M_NOWAIT | M_ZERO); 475256187Strasz if (data == NULL) { 476256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 477256187Strasz "dropping connection"); 478256187Strasz icl_pdu_free(request); 479256187Strasz cfiscsi_session_terminate(cs); 480256187Strasz return; 481256187Strasz } 482256187Strasz icl_pdu_get_data(request, 0, data, datasize); 483256187Strasz } 484256187Strasz 485255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 486255570Strasz if (response == NULL) { 487256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 488256187Strasz "droppping connection"); 489256187Strasz free(data, M_CFISCSI); 490255570Strasz icl_pdu_free(request); 491256187Strasz cfiscsi_session_terminate(cs); 492255570Strasz return; 493255570Strasz } 494255570Strasz bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 495255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 496255570Strasz bhsni->bhsni_flags = 0x80; 497255570Strasz bhsni->bhsni_initiator_task_tag = bhsno->bhsno_initiator_task_tag; 498255570Strasz bhsni->bhsni_target_transfer_tag = 0xffffffff; 499256187Strasz if (datasize > 0) { 500256187Strasz error = icl_pdu_append_data(response, data, datasize, M_NOWAIT); 501256187Strasz if (error != 0) { 502256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 503256187Strasz "dropping connection"); 504256187Strasz free(data, M_CFISCSI); 505256187Strasz icl_pdu_free(request); 506256187Strasz icl_pdu_free(response); 507256187Strasz cfiscsi_session_terminate(cs); 508256187Strasz return; 509256187Strasz } 510256187Strasz free(data, M_CFISCSI); 511256187Strasz } 512255570Strasz 513255570Strasz icl_pdu_free(request); 514255570Strasz cfiscsi_pdu_queue(response); 515255570Strasz} 516255570Strasz 517255570Straszstatic void 518255570Straszcfiscsi_pdu_handle_scsi_command(struct icl_pdu *request) 519255570Strasz{ 520255570Strasz struct iscsi_bhs_scsi_command *bhssc; 521255570Strasz struct cfiscsi_session *cs; 522255570Strasz union ctl_io *io; 523255570Strasz int error; 524255570Strasz 525255570Strasz cs = PDU_SESSION(request); 526255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 527255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 528255570Strasz // bhssc->bhssc_initiator_task_tag); 529255570Strasz 530255570Strasz if (request->ip_data_len > 0 && cs->cs_immediate_data == false) { 531255570Strasz CFISCSI_SESSION_WARN(cs, "unsolicited data with " 532255570Strasz "ImmediateData=No; dropping connection"); 533256197Strasz icl_pdu_free(request); 534255570Strasz cfiscsi_session_terminate(cs); 535255570Strasz return; 536255570Strasz } 537255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 538255570Strasz if (io == NULL) { 539256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io; " 540256197Strasz "dropping connection"); 541255570Strasz icl_pdu_free(request); 542256197Strasz cfiscsi_session_terminate(cs); 543255570Strasz return; 544255570Strasz } 545255570Strasz ctl_zero_io(io); 546255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 547255570Strasz io->io_hdr.io_type = CTL_IO_SCSI; 548255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 549255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_softc->fe.targ_port; 550255570Strasz io->io_hdr.nexus.targ_target.id = 0; 551255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhssc->bhssc_lun); 552255570Strasz io->io_hdr.nexus.lun_map_fn = cfiscsi_map_lun; 553255570Strasz io->io_hdr.nexus.lun_map_arg = cs; 554255570Strasz io->scsiio.tag_num = bhssc->bhssc_initiator_task_tag; 555255570Strasz switch ((bhssc->bhssc_flags & BHSSC_FLAGS_ATTR)) { 556255570Strasz case BHSSC_FLAGS_ATTR_UNTAGGED: 557255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 558255570Strasz break; 559255570Strasz case BHSSC_FLAGS_ATTR_SIMPLE: 560255570Strasz io->scsiio.tag_type = CTL_TAG_SIMPLE; 561255570Strasz break; 562255570Strasz case BHSSC_FLAGS_ATTR_ORDERED: 563255570Strasz io->scsiio.tag_type = CTL_TAG_ORDERED; 564255570Strasz break; 565255570Strasz case BHSSC_FLAGS_ATTR_HOQ: 566255570Strasz io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 567255570Strasz break; 568255570Strasz case BHSSC_FLAGS_ATTR_ACA: 569255570Strasz io->scsiio.tag_type = CTL_TAG_ACA; 570255570Strasz break; 571255570Strasz default: 572255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 573255570Strasz CFISCSI_SESSION_WARN(cs, "unhandled tag type %d", 574255570Strasz bhssc->bhssc_flags & BHSSC_FLAGS_ATTR); 575255570Strasz break; 576255570Strasz } 577255570Strasz io->scsiio.cdb_len = sizeof(bhssc->bhssc_cdb); /* Which is 16. */ 578255570Strasz memcpy(io->scsiio.cdb, bhssc->bhssc_cdb, sizeof(bhssc->bhssc_cdb)); 579255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 580255570Strasz error = ctl_queue(io); 581255570Strasz if (error != CTL_RETVAL_COMPLETE) { 582256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 583256197Strasz "dropping connection", error); 584255570Strasz ctl_free_io(io); 585255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 586255570Strasz icl_pdu_free(request); 587256197Strasz cfiscsi_session_terminate(cs); 588255570Strasz } 589255570Strasz} 590255570Strasz 591255570Straszstatic void 592255570Straszcfiscsi_pdu_handle_task_request(struct icl_pdu *request) 593255570Strasz{ 594255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 595255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 596255570Strasz struct icl_pdu *response; 597255570Strasz struct cfiscsi_session *cs; 598255570Strasz union ctl_io *io; 599255570Strasz int error; 600255570Strasz 601255570Strasz cs = PDU_SESSION(request); 602255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 603255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 604255570Strasz if (io == NULL) { 605256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io;" 606256197Strasz "dropping connection"); 607255570Strasz icl_pdu_free(request); 608256197Strasz cfiscsi_session_terminate(cs); 609255570Strasz return; 610255570Strasz } 611255570Strasz ctl_zero_io(io); 612255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 613255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 614255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 615255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_softc->fe.targ_port; 616255570Strasz io->io_hdr.nexus.targ_target.id = 0; 617255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhstmr->bhstmr_lun); 618255570Strasz io->io_hdr.nexus.lun_map_fn = cfiscsi_map_lun; 619255570Strasz io->io_hdr.nexus.lun_map_arg = cs; 620255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 621255570Strasz 622255570Strasz switch (bhstmr->bhstmr_function & ~0x80) { 623255570Strasz case BHSTMR_FUNCTION_ABORT_TASK: 624255570Strasz#if 0 625255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK"); 626255570Strasz#endif 627255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 628255570Strasz io->taskio.tag_num = bhstmr->bhstmr_referenced_task_tag; 629255570Strasz break; 630255570Strasz case BHSTMR_FUNCTION_LOGICAL_UNIT_RESET: 631255570Strasz#if 0 632255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_LOGICAL_UNIT_RESET"); 633255570Strasz#endif 634255570Strasz io->taskio.task_action = CTL_TASK_LUN_RESET; 635255570Strasz break; 636255570Strasz case BHSTMR_FUNCTION_TARGET_COLD_RESET: 637255570Strasz#if 0 638255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_TARGET_COLD_RESET"); 639255570Strasz#endif 640255570Strasz io->taskio.task_action = CTL_TASK_BUS_RESET; 641255570Strasz break; 642255570Strasz default: 643255570Strasz CFISCSI_SESSION_DEBUG(cs, "unsupported function 0x%x", 644255570Strasz bhstmr->bhstmr_function & ~0x80); 645255570Strasz ctl_free_io(io); 646255570Strasz 647255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 648255570Strasz if (response == NULL) { 649256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 650256197Strasz "dropping connection"); 651255570Strasz icl_pdu_free(request); 652256197Strasz cfiscsi_session_terminate(cs); 653255570Strasz return; 654255570Strasz } 655255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 656255570Strasz response->ip_bhs; 657255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 658255570Strasz bhstmr2->bhstmr_flags = 0x80; 659255570Strasz bhstmr2->bhstmr_response = 660255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 661255570Strasz bhstmr2->bhstmr_initiator_task_tag = 662255570Strasz bhstmr->bhstmr_initiator_task_tag; 663255570Strasz icl_pdu_free(request); 664255570Strasz cfiscsi_pdu_queue(response); 665255570Strasz return; 666255570Strasz } 667255570Strasz 668255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 669255570Strasz error = ctl_queue(io); 670255570Strasz if (error != CTL_RETVAL_COMPLETE) { 671256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 672256197Strasz "dropping connection", error); 673255570Strasz ctl_free_io(io); 674255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 675255570Strasz icl_pdu_free(request); 676256197Strasz cfiscsi_session_terminate(cs); 677255570Strasz } 678255570Strasz} 679255570Strasz 680255570Straszstatic bool 681255570Straszcfiscsi_handle_data_segment(struct icl_pdu *request, struct cfiscsi_data_wait *cdw) 682255570Strasz{ 683255570Strasz struct iscsi_bhs_data_out *bhsdo; 684255570Strasz struct cfiscsi_session *cs; 685255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 686256195Strasz size_t copy_len, len, off, buffer_offset; 687255570Strasz int ctl_sg_count; 688255570Strasz union ctl_io *io; 689255570Strasz 690255570Strasz cs = PDU_SESSION(request); 691255570Strasz 692255570Strasz KASSERT((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 693255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT || 694255570Strasz (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 695255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 696255570Strasz ("bad opcode 0x%x", request->ip_bhs->bhs_opcode)); 697255570Strasz 698255570Strasz /* 699255570Strasz * We're only using fields common for Data Out and SCSI Command PDUs. 700255570Strasz */ 701255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 702255570Strasz 703255570Strasz io = cdw->cdw_ctl_io; 704255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 705255570Strasz ("CTL_FLAG_DATA_IN")); 706255570Strasz 707255570Strasz#if 0 708255570Strasz CFISCSI_SESSION_DEBUG(cs, "received %zd bytes out of %d", 709255570Strasz request->ip_data_len, io->scsiio.kern_total_len); 710255570Strasz#endif 711255570Strasz 712255570Strasz if (io->scsiio.kern_sg_entries > 0) { 713255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 714255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 715255570Strasz } else { 716255570Strasz ctl_sglist = &ctl_sg_entry; 717255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 718255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 719255570Strasz ctl_sg_count = 1; 720255570Strasz } 721255570Strasz 722255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 723255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 724255570Strasz buffer_offset = ntohl(bhsdo->bhsdo_buffer_offset); 725255570Strasz else 726255570Strasz buffer_offset = 0; 727255570Strasz 728255570Strasz /* 729255570Strasz * Make sure the offset, as sent by the initiator, matches the offset 730255570Strasz * we're supposed to be at in the scatter-gather list. 731255570Strasz */ 732255570Strasz if (buffer_offset != io->scsiio.ext_data_filled) { 733255570Strasz CFISCSI_SESSION_WARN(cs, "received bad buffer offset %zd, " 734255570Strasz "expected %zd", buffer_offset, 735255570Strasz (size_t)io->scsiio.ext_data_filled); 736255570Strasz cfiscsi_session_terminate(cs); 737255570Strasz return (true); 738255570Strasz } 739255570Strasz 740256195Strasz /* 741256195Strasz * This is the offset within the PDU data segment, as opposed 742256195Strasz * to buffer_offset, which is the offset within the task (SCSI 743256195Strasz * command). 744256195Strasz */ 745255570Strasz off = 0; 746256195Strasz len = icl_pdu_data_segment_length(request); 747256195Strasz 748256195Strasz /* 749256195Strasz * Iterate over the scatter/gather segments, filling them with data 750256195Strasz * from the PDU data segment. Note that this can get called multiple 751256195Strasz * times for one SCSI command; the cdw structure holds state for the 752256195Strasz * scatter/gather list. 753256195Strasz */ 754255570Strasz for (;;) { 755255570Strasz KASSERT(cdw->cdw_sg_index < ctl_sg_count, 756255570Strasz ("cdw->cdw_sg_index >= ctl_sg_count")); 757255570Strasz if (cdw->cdw_sg_len == 0) { 758255570Strasz cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 759255570Strasz cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 760255570Strasz } 761256195Strasz KASSERT(off <= len, ("len > off")); 762256195Strasz copy_len = len - off; 763255570Strasz if (copy_len > cdw->cdw_sg_len) 764255570Strasz copy_len = cdw->cdw_sg_len; 765255570Strasz 766255570Strasz icl_pdu_get_data(request, off, cdw->cdw_sg_addr, copy_len); 767255570Strasz cdw->cdw_sg_addr += copy_len; 768255570Strasz cdw->cdw_sg_len -= copy_len; 769255570Strasz off += copy_len; 770255570Strasz io->scsiio.ext_data_filled += copy_len; 771255570Strasz 772255570Strasz if (cdw->cdw_sg_len == 0) { 773256195Strasz /* 774256195Strasz * End of current segment. 775256195Strasz */ 776256195Strasz if (cdw->cdw_sg_index == ctl_sg_count - 1) { 777256195Strasz /* 778256195Strasz * Last segment in scatter/gather list. 779256195Strasz */ 780255570Strasz break; 781256195Strasz } 782255570Strasz cdw->cdw_sg_index++; 783255570Strasz } 784256195Strasz 785256195Strasz if (off == len) { 786256195Strasz /* 787256195Strasz * End of PDU payload. 788256195Strasz */ 789255570Strasz break; 790256195Strasz } 791255570Strasz } 792255570Strasz 793256195Strasz if (len > off) { 794255570Strasz CFISCSI_SESSION_WARN(cs, "received too much data: got %zd bytes, " 795255570Strasz "expected %zd", icl_pdu_data_segment_length(request), off); 796255570Strasz cfiscsi_session_terminate(cs); 797255570Strasz return (true); 798255570Strasz } 799255570Strasz 800255570Strasz if (bhsdo->bhsdo_flags & BHSDO_FLAGS_F || 801255570Strasz io->scsiio.ext_data_filled == io->scsiio.kern_total_len) { 802255570Strasz if ((bhsdo->bhsdo_flags & BHSDO_FLAGS_F) == 0) { 803255570Strasz CFISCSI_SESSION_WARN(cs, "got the final packet without " 804255570Strasz "the F flag; flags = 0x%x; dropping connection", 805255570Strasz bhsdo->bhsdo_flags); 806255570Strasz cfiscsi_session_terminate(cs); 807255570Strasz return (true); 808255570Strasz } 809255570Strasz 810255570Strasz if (io->scsiio.ext_data_filled != io->scsiio.kern_total_len) { 811255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 812255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 813255570Strasz CFISCSI_SESSION_WARN(cs, "got the final packet, but the " 814255570Strasz "transmitted size was %zd bytes instead of %d; " 815255570Strasz "dropping connection", 816255570Strasz (size_t)io->scsiio.ext_data_filled, 817255570Strasz io->scsiio.kern_total_len); 818255570Strasz cfiscsi_session_terminate(cs); 819255570Strasz return (true); 820255570Strasz } else { 821255570Strasz /* 822255570Strasz * For SCSI Command PDU, this just means we need to 823255570Strasz * solicit more data by sending R2T. 824255570Strasz */ 825255570Strasz return (false); 826255570Strasz } 827255570Strasz } 828255570Strasz#if 0 829255570Strasz CFISCSI_SESSION_DEBUG(cs, "no longer expecting Data-Out with target " 830255570Strasz "transfer tag 0x%x", cdw->cdw_target_transfer_tag); 831255570Strasz#endif 832255570Strasz 833255570Strasz return (true); 834255570Strasz } 835255570Strasz 836255570Strasz return (false); 837255570Strasz} 838255570Strasz 839255570Straszstatic void 840255570Straszcfiscsi_pdu_handle_data_out(struct icl_pdu *request) 841255570Strasz{ 842255570Strasz struct iscsi_bhs_data_out *bhsdo; 843255570Strasz struct cfiscsi_session *cs; 844255570Strasz struct cfiscsi_data_wait *cdw = NULL; 845255570Strasz union ctl_io *io; 846255570Strasz bool done; 847255570Strasz 848255570Strasz cs = PDU_SESSION(request); 849255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 850255570Strasz 851255570Strasz CFISCSI_SESSION_LOCK(cs); 852255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) { 853255570Strasz#if 0 854255570Strasz CFISCSI_SESSION_DEBUG(cs, "have ttt 0x%x, itt 0x%x; looking for " 855255570Strasz "ttt 0x%x, itt 0x%x", 856255570Strasz bhsdo->bhsdo_target_transfer_tag, 857255570Strasz bhsdo->bhsdo_initiator_task_tag, 858255570Strasz cdw->cdw_target_transfer_tag, cdw->cdw_initiator_task_tag)); 859255570Strasz#endif 860255570Strasz if (bhsdo->bhsdo_target_transfer_tag == 861255570Strasz cdw->cdw_target_transfer_tag) 862255570Strasz break; 863255570Strasz } 864255570Strasz CFISCSI_SESSION_UNLOCK(cs); 865255570Strasz if (cdw == NULL) { 866255570Strasz CFISCSI_SESSION_WARN(cs, "data transfer tag 0x%x, initiator task tag " 867256197Strasz "0x%x, not found; dropping connection", 868256197Strasz bhsdo->bhsdo_target_transfer_tag, bhsdo->bhsdo_initiator_task_tag); 869255570Strasz icl_pdu_free(request); 870255570Strasz cfiscsi_session_terminate(cs); 871255570Strasz return; 872255570Strasz } 873255570Strasz 874255570Strasz io = cdw->cdw_ctl_io; 875255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 876255570Strasz ("CTL_FLAG_DATA_IN")); 877255570Strasz 878255570Strasz done = cfiscsi_handle_data_segment(request, cdw); 879255570Strasz if (done) { 880255570Strasz CFISCSI_SESSION_LOCK(cs); 881255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 882255570Strasz CFISCSI_SESSION_UNLOCK(cs); 883255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 884255570Strasz io->scsiio.be_move_done(io); 885255570Strasz } 886255570Strasz 887255570Strasz icl_pdu_free(request); 888255570Strasz} 889255570Strasz 890255570Straszstatic void 891255570Straszcfiscsi_pdu_handle_logout_request(struct icl_pdu *request) 892255570Strasz{ 893255570Strasz struct iscsi_bhs_logout_request *bhslr; 894255570Strasz struct iscsi_bhs_logout_response *bhslr2; 895255570Strasz struct icl_pdu *response; 896255570Strasz struct cfiscsi_session *cs; 897255570Strasz 898255570Strasz cs = PDU_SESSION(request); 899255570Strasz bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 900255570Strasz switch (bhslr->bhslr_reason & 0x7f) { 901255570Strasz case BHSLR_REASON_CLOSE_SESSION: 902255570Strasz case BHSLR_REASON_CLOSE_CONNECTION: 903255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 904255570Strasz if (response == NULL) { 905256197Strasz CFISCSI_SESSION_DEBUG(cs, "failed to allocate memory"); 906255570Strasz icl_pdu_free(request); 907255570Strasz cfiscsi_session_terminate(cs); 908255570Strasz return; 909255570Strasz } 910255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 911255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 912255570Strasz bhslr2->bhslr_flags = 0x80; 913255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_CLOSED_SUCCESSFULLY; 914255570Strasz bhslr2->bhslr_initiator_task_tag = 915255570Strasz bhslr->bhslr_initiator_task_tag; 916255570Strasz icl_pdu_free(request); 917255570Strasz cfiscsi_pdu_queue(response); 918255570Strasz cfiscsi_session_terminate(cs); 919255570Strasz break; 920255570Strasz case BHSLR_REASON_REMOVE_FOR_RECOVERY: 921255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 922255570Strasz if (response == NULL) { 923256197Strasz CFISCSI_SESSION_WARN(cs, 924256197Strasz "failed to allocate memory; dropping connection"); 925255570Strasz icl_pdu_free(request); 926255570Strasz cfiscsi_session_terminate(cs); 927255570Strasz return; 928255570Strasz } 929255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 930255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 931255570Strasz bhslr2->bhslr_flags = 0x80; 932255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_RECOVERY_NOT_SUPPORTED; 933255570Strasz bhslr2->bhslr_initiator_task_tag = 934255570Strasz bhslr->bhslr_initiator_task_tag; 935255570Strasz icl_pdu_free(request); 936255570Strasz cfiscsi_pdu_queue(response); 937255570Strasz break; 938255570Strasz default: 939255570Strasz CFISCSI_SESSION_WARN(cs, "invalid reason 0%x; dropping connection", 940255570Strasz bhslr->bhslr_reason); 941255570Strasz icl_pdu_free(request); 942255570Strasz cfiscsi_session_terminate(cs); 943255570Strasz break; 944255570Strasz } 945255570Strasz} 946255570Strasz 947255570Straszstatic void 948255570Straszcfiscsi_callout(void *context) 949255570Strasz{ 950255570Strasz struct icl_pdu *cp; 951255570Strasz struct iscsi_bhs_nop_in *bhsni; 952255570Strasz struct cfiscsi_session *cs; 953255570Strasz 954255570Strasz cs = context; 955255570Strasz 956255570Strasz if (cs->cs_terminating) 957255570Strasz return; 958255570Strasz 959255570Strasz callout_schedule(&cs->cs_callout, 1 * hz); 960255570Strasz 961255570Strasz CFISCSI_SESSION_LOCK(cs); 962255570Strasz cs->cs_timeout++; 963255570Strasz CFISCSI_SESSION_UNLOCK(cs); 964255570Strasz 965255570Strasz#ifdef ICL_KERNEL_PROXY 966255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 967255570Strasz if (cs->cs_timeout > login_timeout) { 968255570Strasz CFISCSI_SESSION_WARN(cs, "login timed out after " 969255570Strasz "%d seconds; dropping connection", cs->cs_timeout); 970255570Strasz cfiscsi_session_terminate(cs); 971255570Strasz } 972255570Strasz return; 973255570Strasz } 974255570Strasz#endif 975255570Strasz 976255570Strasz if (cs->cs_timeout >= ping_timeout) { 977255570Strasz CFISCSI_SESSION_WARN(cs, "no ping reply (NOP-Out) after %d seconds; " 978255570Strasz "dropping connection", ping_timeout); 979255570Strasz cfiscsi_session_terminate(cs); 980255570Strasz return; 981255570Strasz } 982255570Strasz 983255570Strasz /* 984255570Strasz * If the ping was reset less than one second ago - which means 985255570Strasz * that we've received some PDU during the last second - assume 986255570Strasz * the traffic flows correctly and don't bother sending a NOP-Out. 987255570Strasz * 988255570Strasz * (It's 2 - one for one second, and one for incrementing is_timeout 989255570Strasz * earlier in this routine.) 990255570Strasz */ 991255570Strasz if (cs->cs_timeout < 2) 992255570Strasz return; 993255570Strasz 994255824Strasz cp = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 995255824Strasz if (cp == NULL) { 996256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory"); 997255824Strasz return; 998255824Strasz } 999255570Strasz bhsni = (struct iscsi_bhs_nop_in *)cp->ip_bhs; 1000255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 1001255570Strasz bhsni->bhsni_flags = 0x80; 1002255570Strasz bhsni->bhsni_initiator_task_tag = 0xffffffff; 1003255570Strasz 1004255570Strasz cfiscsi_pdu_queue(cp); 1005255570Strasz} 1006255570Strasz 1007255570Straszstatic void 1008255570Straszcfiscsi_session_terminate_tasks(struct cfiscsi_session *cs) 1009255570Strasz{ 1010255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 1011255570Strasz union ctl_io *io; 1012255570Strasz int error; 1013255570Strasz 1014255570Strasz#ifdef notyet 1015255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 1016255570Strasz if (io == NULL) { 1017255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 1018255570Strasz return; 1019255570Strasz } 1020255570Strasz ctl_zero_io(io); 1021255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 1022255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1023255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1024255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_softc->fe.targ_port; 1025255570Strasz io->io_hdr.nexus.targ_target.id = 0; 1026255570Strasz io->io_hdr.nexus.targ_lun = lun; 1027255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1028255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK_SET; 1029255570Strasz error = ctl_queue(io); 1030255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1031255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1032255570Strasz ctl_free_io(io); 1033255570Strasz } 1034255570Strasz#else 1035255570Strasz /* 1036255570Strasz * CTL doesn't currently support CTL_TASK_ABORT_TASK_SET, so instead 1037255570Strasz * just iterate over tasks that are waiting for something - data - and 1038255570Strasz * terminate those. 1039255570Strasz */ 1040255570Strasz CFISCSI_SESSION_LOCK(cs); 1041255570Strasz TAILQ_FOREACH_SAFE(cdw, 1042255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 1043255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 1044255570Strasz if (io == NULL) { 1045255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 1046255570Strasz return; 1047255570Strasz } 1048255570Strasz ctl_zero_io(io); 1049255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 1050255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1051255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1052255570Strasz io->io_hdr.nexus.targ_port = 1053255570Strasz cs->cs_target->ct_softc->fe.targ_port; 1054255570Strasz io->io_hdr.nexus.targ_target.id = 0; 1055255570Strasz //io->io_hdr.nexus.targ_lun = lun; /* Not needed? */ 1056255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1057255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 1058255570Strasz io->taskio.tag_num = cdw->cdw_initiator_task_tag; 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 return; 1064255570Strasz } 1065255570Strasz#if 0 1066255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task tag " 1067255570Strasz "0x%x", cdw->cdw_initiator_task_tag); 1068255570Strasz#endif 1069255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 1070255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 1071255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 1072255570Strasz } 1073255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1074255570Strasz#endif 1075255570Strasz} 1076255570Strasz 1077255570Straszstatic void 1078255570Straszcfiscsi_maintenance_thread(void *arg) 1079255570Strasz{ 1080255570Strasz struct cfiscsi_session *cs; 1081255570Strasz 1082255570Strasz cs = arg; 1083255570Strasz 1084255570Strasz for (;;) { 1085255570Strasz CFISCSI_SESSION_LOCK(cs); 1086255570Strasz if (cs->cs_terminating == false) 1087255570Strasz cv_wait(&cs->cs_maintenance_cv, &cs->cs_lock); 1088255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1089255570Strasz 1090255570Strasz if (cs->cs_terminating) { 1091255570Strasz cfiscsi_session_terminate_tasks(cs); 1092255570Strasz callout_drain(&cs->cs_callout); 1093255570Strasz 1094255570Strasz icl_conn_shutdown(cs->cs_conn); 1095255570Strasz icl_conn_close(cs->cs_conn); 1096255570Strasz 1097255570Strasz cs->cs_terminating++; 1098255570Strasz 1099255570Strasz /* 1100255570Strasz * XXX: We used to wait up to 30 seconds to deliver queued PDUs 1101255570Strasz * to the initiator. We also tried hard to deliver SCSI Responses 1102255570Strasz * for the aborted PDUs. We don't do that anymore. We might need 1103255570Strasz * to revisit that. 1104255570Strasz */ 1105255570Strasz 1106255570Strasz cfiscsi_session_delete(cs); 1107255570Strasz kthread_exit(); 1108255570Strasz return; 1109255570Strasz } 1110255570Strasz CFISCSI_SESSION_DEBUG(cs, "nothing to do"); 1111255570Strasz } 1112255570Strasz} 1113255570Strasz 1114255570Straszstatic void 1115255570Straszcfiscsi_session_terminate(struct cfiscsi_session *cs) 1116255570Strasz{ 1117255570Strasz 1118255570Strasz if (cs->cs_terminating != 0) 1119255570Strasz return; 1120255570Strasz cs->cs_terminating = 1; 1121255570Strasz cv_signal(&cs->cs_maintenance_cv); 1122255570Strasz} 1123255570Strasz 1124255570Straszstatic int 1125255570Straszcfiscsi_session_register_initiator(struct cfiscsi_session *cs) 1126255570Strasz{ 1127255570Strasz int error, i; 1128255570Strasz struct cfiscsi_softc *softc; 1129255570Strasz 1130255570Strasz KASSERT(cs->cs_ctl_initid == -1, ("already registered")); 1131255570Strasz 1132255570Strasz softc = &cfiscsi_softc; 1133255570Strasz 1134255570Strasz mtx_lock(&softc->lock); 1135255570Strasz for (i = 0; i < softc->max_initiators; i++) { 1136255570Strasz if (softc->ctl_initids[i] == 0) 1137255570Strasz break; 1138255570Strasz } 1139255570Strasz if (i == softc->max_initiators) { 1140255570Strasz CFISCSI_SESSION_WARN(cs, "too many concurrent sessions (%d)", 1141255570Strasz softc->max_initiators); 1142255570Strasz mtx_unlock(&softc->lock); 1143255570Strasz return (1); 1144255570Strasz } 1145255570Strasz softc->ctl_initids[i] = 1; 1146255570Strasz mtx_unlock(&softc->lock); 1147255570Strasz 1148255570Strasz#if 0 1149255570Strasz CFISCSI_SESSION_DEBUG(cs, "adding initiator id %d, max %d", 1150255570Strasz i, softc->max_initiators); 1151255570Strasz#endif 1152255570Strasz cs->cs_ctl_initid = i; 1153255570Strasz error = ctl_add_initiator(0x0, softc->fe.targ_port, cs->cs_ctl_initid); 1154255570Strasz if (error != 0) { 1155255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_add_initiator failed with error %d", error); 1156255570Strasz mtx_lock(&softc->lock); 1157255570Strasz softc->ctl_initids[cs->cs_ctl_initid] = 0; 1158255570Strasz mtx_unlock(&softc->lock); 1159255570Strasz cs->cs_ctl_initid = -1; 1160255570Strasz return (1); 1161255570Strasz } 1162255570Strasz 1163255570Strasz return (0); 1164255570Strasz} 1165255570Strasz 1166255570Straszstatic void 1167255570Straszcfiscsi_session_unregister_initiator(struct cfiscsi_session *cs) 1168255570Strasz{ 1169255570Strasz int error; 1170255570Strasz struct cfiscsi_softc *softc; 1171255570Strasz 1172255570Strasz if (cs->cs_ctl_initid == -1) 1173255570Strasz return; 1174255570Strasz 1175255570Strasz softc = &cfiscsi_softc; 1176255570Strasz 1177255570Strasz error = ctl_remove_initiator(softc->fe.targ_port, cs->cs_ctl_initid); 1178255570Strasz if (error != 0) { 1179255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_remove_initiator failed with error %d", 1180255570Strasz error); 1181255570Strasz } 1182255570Strasz mtx_lock(&softc->lock); 1183255570Strasz softc->ctl_initids[cs->cs_ctl_initid] = 0; 1184255570Strasz mtx_unlock(&softc->lock); 1185255570Strasz cs->cs_ctl_initid = -1; 1186255570Strasz} 1187255570Strasz 1188255570Straszstatic struct cfiscsi_session * 1189255570Straszcfiscsi_session_new(struct cfiscsi_softc *softc) 1190255570Strasz{ 1191255570Strasz struct cfiscsi_session *cs; 1192255570Strasz int error; 1193255570Strasz 1194255570Strasz cs = malloc(sizeof(*cs), M_CFISCSI, M_NOWAIT | M_ZERO); 1195255570Strasz if (cs == NULL) { 1196255570Strasz CFISCSI_WARN("malloc failed"); 1197255570Strasz return (NULL); 1198255570Strasz } 1199255570Strasz cs->cs_ctl_initid = -1; 1200255570Strasz 1201255570Strasz refcount_init(&cs->cs_outstanding_ctl_pdus, 0); 1202255570Strasz TAILQ_INIT(&cs->cs_waiting_for_data_out); 1203255570Strasz mtx_init(&cs->cs_lock, "cfiscsi_lock", NULL, MTX_DEF); 1204255570Strasz cv_init(&cs->cs_maintenance_cv, "cfiscsi_mt"); 1205255570Strasz#ifdef ICL_KERNEL_PROXY 1206255570Strasz cv_init(&cs->cs_login_cv, "cfiscsi_login"); 1207255570Strasz#endif 1208255570Strasz 1209255570Strasz cs->cs_conn = icl_conn_new(); 1210255570Strasz cs->cs_conn->ic_receive = cfiscsi_receive_callback; 1211255570Strasz cs->cs_conn->ic_error = cfiscsi_error_callback; 1212255570Strasz cs->cs_conn->ic_prv0 = cs; 1213255570Strasz 1214255570Strasz error = kthread_add(cfiscsi_maintenance_thread, cs, NULL, NULL, 0, 0, "cfiscsimt"); 1215255570Strasz if (error != 0) { 1216255570Strasz CFISCSI_SESSION_WARN(cs, "kthread_add(9) failed with error %d", error); 1217255570Strasz free(cs, M_CFISCSI); 1218255570Strasz return (NULL); 1219255570Strasz } 1220255570Strasz 1221255570Strasz mtx_lock(&softc->lock); 1222255570Strasz cs->cs_id = softc->last_session_id + 1; 1223255570Strasz softc->last_session_id++; 1224255570Strasz mtx_unlock(&softc->lock); 1225255570Strasz 1226255570Strasz mtx_lock(&softc->lock); 1227255570Strasz TAILQ_INSERT_TAIL(&softc->sessions, cs, cs_next); 1228255570Strasz mtx_unlock(&softc->lock); 1229255570Strasz 1230255570Strasz /* 1231255570Strasz * Start pinging the initiator. 1232255570Strasz */ 1233255570Strasz callout_init(&cs->cs_callout, 1); 1234255570Strasz callout_reset(&cs->cs_callout, 1 * hz, cfiscsi_callout, cs); 1235255570Strasz 1236255570Strasz return (cs); 1237255570Strasz} 1238255570Strasz 1239255570Straszstatic void 1240255570Straszcfiscsi_session_delete(struct cfiscsi_session *cs) 1241255570Strasz{ 1242255570Strasz struct cfiscsi_softc *softc; 1243255570Strasz 1244255570Strasz softc = &cfiscsi_softc; 1245255570Strasz 1246255570Strasz KASSERT(cs->cs_outstanding_ctl_pdus == 0, 1247255570Strasz ("destroying session with outstanding CTL pdus")); 1248255570Strasz KASSERT(TAILQ_EMPTY(&cs->cs_waiting_for_data_out), 1249255570Strasz ("destroying session with non-empty queue")); 1250255570Strasz 1251255570Strasz cfiscsi_session_unregister_initiator(cs); 1252255570Strasz if (cs->cs_target != NULL) 1253255570Strasz cfiscsi_target_release(cs->cs_target); 1254255570Strasz icl_conn_close(cs->cs_conn); 1255255570Strasz icl_conn_free(cs->cs_conn); 1256255570Strasz 1257255570Strasz mtx_lock(&softc->lock); 1258255570Strasz TAILQ_REMOVE(&softc->sessions, cs, cs_next); 1259255570Strasz mtx_unlock(&softc->lock); 1260255570Strasz 1261255570Strasz free(cs, M_CFISCSI); 1262255570Strasz} 1263255570Strasz 1264255570Straszint 1265255570Straszcfiscsi_init(void) 1266255570Strasz{ 1267255570Strasz struct cfiscsi_softc *softc; 1268255570Strasz struct ctl_frontend *fe; 1269255570Strasz int retval; 1270255570Strasz 1271255570Strasz softc = &cfiscsi_softc; 1272255570Strasz retval = 0; 1273255570Strasz bzero(softc, sizeof(*softc)); 1274255570Strasz mtx_init(&softc->lock, "cfiscsi", NULL, MTX_DEF); 1275255570Strasz 1276255570Strasz#ifdef ICL_KERNEL_PROXY 1277255570Strasz cv_init(&softc->accept_cv, "cfiscsi_accept"); 1278255570Strasz#endif 1279255570Strasz TAILQ_INIT(&softc->sessions); 1280255570Strasz TAILQ_INIT(&softc->targets); 1281255570Strasz 1282255570Strasz fe = &softc->fe; 1283255570Strasz fe->port_type = CTL_PORT_ISCSI; 1284255570Strasz /* XXX KDM what should the real number be here? */ 1285255570Strasz fe->num_requested_ctl_io = 4096; 1286255570Strasz snprintf(softc->port_name, sizeof(softc->port_name), "iscsi"); 1287255570Strasz fe->port_name = softc->port_name; 1288255570Strasz fe->port_online = cfiscsi_online; 1289255570Strasz fe->port_offline = cfiscsi_offline; 1290255570Strasz fe->onoff_arg = softc; 1291255570Strasz fe->targ_enable = cfiscsi_targ_enable; 1292255570Strasz fe->targ_disable = cfiscsi_targ_disable; 1293255570Strasz fe->lun_enable = cfiscsi_lun_enable; 1294255570Strasz fe->lun_disable = cfiscsi_lun_disable; 1295255570Strasz fe->targ_lun_arg = softc; 1296255570Strasz fe->ioctl = cfiscsi_ioctl; 1297255570Strasz fe->devid = cfiscsi_devid; 1298255570Strasz fe->fe_datamove = cfiscsi_datamove; 1299255570Strasz fe->fe_done = cfiscsi_done; 1300255570Strasz 1301255570Strasz /* XXX KDM what should we report here? */ 1302255570Strasz /* XXX These should probably be fetched from CTL. */ 1303255570Strasz fe->max_targets = 1; 1304255570Strasz fe->max_target_id = 15; 1305255570Strasz 1306255570Strasz retval = ctl_frontend_register(fe, /*master_SC*/ 1); 1307255570Strasz if (retval != 0) { 1308255570Strasz CFISCSI_WARN("ctl_frontend_register() failed with error %d", 1309255570Strasz retval); 1310255570Strasz retval = 1; 1311255570Strasz goto bailout; 1312255570Strasz } 1313255570Strasz 1314255570Strasz softc->max_initiators = fe->max_initiators; 1315255570Strasz 1316255570Strasz cfiscsi_data_wait_zone = uma_zcreate("cfiscsi_data_wait", 1317255570Strasz sizeof(struct cfiscsi_data_wait), NULL, NULL, NULL, NULL, 1318256058Strasz UMA_ALIGN_PTR, 0); 1319255570Strasz 1320255570Strasz return (0); 1321255570Strasz 1322255570Straszbailout: 1323255570Strasz return (retval); 1324255570Strasz} 1325255570Strasz 1326255570Straszstatic int 1327255570Straszcfiscsi_module_event_handler(module_t mod, int what, void *arg) 1328255570Strasz{ 1329255570Strasz 1330255570Strasz switch (what) { 1331255570Strasz case MOD_LOAD: 1332255570Strasz return (cfiscsi_init()); 1333255570Strasz case MOD_UNLOAD: 1334255570Strasz return (EBUSY); 1335255570Strasz default: 1336255570Strasz return (EOPNOTSUPP); 1337255570Strasz } 1338255570Strasz} 1339255570Strasz 1340255570Strasz#ifdef ICL_KERNEL_PROXY 1341255570Straszstatic void 1342255570Straszcfiscsi_accept(struct socket *so) 1343255570Strasz{ 1344255570Strasz struct cfiscsi_session *cs; 1345255570Strasz 1346255570Strasz cs = cfiscsi_session_new(&cfiscsi_softc); 1347255570Strasz if (cs == NULL) { 1348255570Strasz CFISCSI_WARN("failed to create session"); 1349255570Strasz return; 1350255570Strasz } 1351255570Strasz 1352255570Strasz icl_conn_handoff_sock(cs->cs_conn, so); 1353255570Strasz cs->cs_waiting_for_ctld = true; 1354255570Strasz cv_signal(&cfiscsi_softc.accept_cv); 1355255570Strasz} 1356255570Strasz#endif 1357255570Strasz 1358255570Straszstatic void 1359255570Straszcfiscsi_online(void *arg) 1360255570Strasz{ 1361255570Strasz struct cfiscsi_softc *softc; 1362255570Strasz 1363255570Strasz softc = (struct cfiscsi_softc *)arg; 1364255570Strasz 1365255570Strasz softc->online = 1; 1366255570Strasz#ifdef ICL_KERNEL_PROXY 1367255570Strasz if (softc->listener != NULL) 1368255570Strasz icl_listen_free(softc->listener); 1369255570Strasz softc->listener = icl_listen_new(cfiscsi_accept); 1370255570Strasz#endif 1371255570Strasz} 1372255570Strasz 1373255570Straszstatic void 1374255570Straszcfiscsi_offline(void *arg) 1375255570Strasz{ 1376255570Strasz struct cfiscsi_softc *softc; 1377255570Strasz struct cfiscsi_session *cs; 1378255570Strasz 1379255570Strasz softc = (struct cfiscsi_softc *)arg; 1380255570Strasz 1381255570Strasz softc->online = 0; 1382255570Strasz 1383255570Strasz mtx_lock(&softc->lock); 1384255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) 1385255570Strasz cfiscsi_session_terminate(cs); 1386255570Strasz mtx_unlock(&softc->lock); 1387255570Strasz 1388255570Strasz#ifdef ICL_KERNEL_PROXY 1389255570Strasz icl_listen_free(softc->listener); 1390255570Strasz softc->listener = NULL; 1391255570Strasz#endif 1392255570Strasz} 1393255570Strasz 1394255570Straszstatic int 1395255570Straszcfiscsi_targ_enable(void *arg, struct ctl_id targ_id) 1396255570Strasz{ 1397255570Strasz 1398255570Strasz return (0); 1399255570Strasz} 1400255570Strasz 1401255570Straszstatic int 1402255570Straszcfiscsi_targ_disable(void *arg, struct ctl_id targ_id) 1403255570Strasz{ 1404255570Strasz 1405255570Strasz return (0); 1406255570Strasz} 1407255570Strasz 1408255570Straszstatic void 1409255570Straszcfiscsi_ioctl_handoff(struct ctl_iscsi *ci) 1410255570Strasz{ 1411255570Strasz struct cfiscsi_softc *softc; 1412255570Strasz struct cfiscsi_session *cs; 1413255570Strasz struct cfiscsi_target *ct; 1414255570Strasz struct ctl_iscsi_handoff_params *cihp; 1415255570Strasz#ifndef ICL_KERNEL_PROXY 1416255570Strasz int error; 1417255570Strasz#endif 1418255570Strasz 1419255570Strasz cihp = (struct ctl_iscsi_handoff_params *)&(ci->data); 1420255570Strasz softc = &cfiscsi_softc; 1421255570Strasz 1422255570Strasz CFISCSI_DEBUG("new connection from %s (%s) to %s", 1423255570Strasz cihp->initiator_name, cihp->initiator_addr, 1424255570Strasz cihp->target_name); 1425255570Strasz 1426255570Strasz if (softc->online == 0) { 1427255570Strasz ci->status = CTL_ISCSI_ERROR; 1428255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1429255570Strasz "%s: port offline", __func__); 1430255570Strasz return; 1431255570Strasz } 1432255570Strasz 1433255570Strasz ct = cfiscsi_target_find(softc, cihp->target_name); 1434255570Strasz if (ct == NULL) { 1435255570Strasz ci->status = CTL_ISCSI_ERROR; 1436255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1437255570Strasz "%s: target not found", __func__); 1438255570Strasz return; 1439255570Strasz } 1440255570Strasz 1441255570Strasz#ifdef ICL_KERNEL_PROXY 1442255570Strasz mtx_lock(&cfiscsi_softc.lock); 1443255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1444255570Strasz if (cs->cs_id == cihp->socket) 1445255570Strasz break; 1446255570Strasz } 1447255570Strasz if (cs == NULL) { 1448255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1449255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1450255570Strasz ci->status = CTL_ISCSI_ERROR; 1451255570Strasz return; 1452255570Strasz } 1453255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1454255570Strasz#else 1455255570Strasz cs = cfiscsi_session_new(softc); 1456255570Strasz if (cs == NULL) { 1457255570Strasz ci->status = CTL_ISCSI_ERROR; 1458255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1459255570Strasz "%s: cfiscsi_session_new failed", __func__); 1460255570Strasz cfiscsi_target_release(ct); 1461255570Strasz return; 1462255570Strasz } 1463255570Strasz#endif 1464255570Strasz cs->cs_target = ct; 1465255570Strasz 1466255570Strasz /* 1467255570Strasz * First PDU of Full Feature phase has the same CmdSN as the last 1468255570Strasz * PDU from the Login Phase received from the initiator. Thus, 1469255570Strasz * the -1 below. 1470255570Strasz */ 1471255570Strasz cs->cs_portal_group_tag = cihp->portal_group_tag; 1472255570Strasz cs->cs_cmdsn = cihp->cmdsn; 1473255570Strasz cs->cs_statsn = cihp->statsn; 1474255570Strasz cs->cs_max_data_segment_length = cihp->max_recv_data_segment_length; 1475255570Strasz cs->cs_max_burst_length = cihp->max_burst_length; 1476255570Strasz cs->cs_immediate_data = !!cihp->immediate_data; 1477255570Strasz if (cihp->header_digest == CTL_ISCSI_DIGEST_CRC32C) 1478255570Strasz cs->cs_conn->ic_header_crc32c = true; 1479255570Strasz if (cihp->data_digest == CTL_ISCSI_DIGEST_CRC32C) 1480255570Strasz cs->cs_conn->ic_data_crc32c = true; 1481255570Strasz 1482255570Strasz strlcpy(cs->cs_initiator_name, 1483255570Strasz cihp->initiator_name, sizeof(cs->cs_initiator_name)); 1484255570Strasz strlcpy(cs->cs_initiator_addr, 1485255570Strasz cihp->initiator_addr, sizeof(cs->cs_initiator_addr)); 1486255570Strasz strlcpy(cs->cs_initiator_alias, 1487255570Strasz cihp->initiator_alias, sizeof(cs->cs_initiator_alias)); 1488255570Strasz 1489255570Strasz#ifdef ICL_KERNEL_PROXY 1490255570Strasz cs->cs_login_phase = false; 1491255570Strasz#else 1492255570Strasz error = icl_conn_handoff(cs->cs_conn, cihp->socket); 1493255570Strasz if (error != 0) { 1494255570Strasz cfiscsi_session_delete(cs); 1495255570Strasz ci->status = CTL_ISCSI_ERROR; 1496255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1497255570Strasz "%s: icl_conn_handoff failed with error %d", 1498255570Strasz __func__, error); 1499255570Strasz return; 1500255570Strasz } 1501255570Strasz#endif 1502255570Strasz 1503255570Strasz /* 1504255570Strasz * Register initiator with CTL. 1505255570Strasz */ 1506255570Strasz cfiscsi_session_register_initiator(cs); 1507255570Strasz 1508255570Strasz#ifdef ICL_KERNEL_PROXY 1509255570Strasz /* 1510255570Strasz * First PDU of the Full Feature phase has likely already arrived. 1511255570Strasz * We have to pick it up and execute properly. 1512255570Strasz */ 1513255570Strasz if (cs->cs_login_pdu != NULL) { 1514255570Strasz CFISCSI_SESSION_DEBUG(cs, "picking up first PDU"); 1515255570Strasz cfiscsi_pdu_handle(cs->cs_login_pdu); 1516255570Strasz cs->cs_login_pdu = NULL; 1517255570Strasz } 1518255570Strasz#endif 1519255570Strasz 1520255570Strasz ci->status = CTL_ISCSI_OK; 1521255570Strasz} 1522255570Strasz 1523255570Straszstatic void 1524255570Straszcfiscsi_ioctl_list(struct ctl_iscsi *ci) 1525255570Strasz{ 1526255570Strasz struct ctl_iscsi_list_params *cilp; 1527255570Strasz struct cfiscsi_session *cs; 1528255570Strasz struct cfiscsi_softc *softc; 1529255570Strasz struct sbuf *sb; 1530255570Strasz int error; 1531255570Strasz 1532255570Strasz cilp = (struct ctl_iscsi_list_params *)&(ci->data); 1533255570Strasz softc = &cfiscsi_softc; 1534255570Strasz 1535255570Strasz sb = sbuf_new(NULL, NULL, cilp->alloc_len, SBUF_FIXEDLEN); 1536255570Strasz if (sb == NULL) { 1537255570Strasz ci->status = CTL_ISCSI_ERROR; 1538255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1539255570Strasz "Unable to allocate %d bytes for iSCSI session list", 1540255570Strasz cilp->alloc_len); 1541255570Strasz return; 1542255570Strasz } 1543255570Strasz 1544255570Strasz sbuf_printf(sb, "<ctlislist>\n"); 1545255570Strasz mtx_lock(&softc->lock); 1546255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1547255570Strasz#ifdef ICL_KERNEL_PROXY 1548255570Strasz if (cs->cs_target == NULL) 1549255570Strasz continue; 1550255570Strasz#endif 1551255570Strasz error = sbuf_printf(sb, "<connection id=\"%d\">" 1552255570Strasz "<initiator>%s</initiator>" 1553255570Strasz "<initiator_addr>%s</initiator_addr>" 1554255570Strasz "<initiator_alias>%s</initiator_alias>" 1555255570Strasz "<target>%s</target>" 1556255570Strasz "<target_alias>%s</target_alias>" 1557255570Strasz "<header_digest>%s</header_digest>" 1558255570Strasz "<data_digest>%s</data_digest>" 1559255570Strasz "<max_data_segment_length>%zd</max_data_segment_length>" 1560255570Strasz "<immediate_data>%d</immediate_data>" 1561255570Strasz "<iser>%d</iser>" 1562255570Strasz "</connection>\n", 1563255570Strasz cs->cs_id, 1564255570Strasz cs->cs_initiator_name, cs->cs_initiator_addr, cs->cs_initiator_alias, 1565255570Strasz cs->cs_target->ct_name, cs->cs_target->ct_alias, 1566255570Strasz cs->cs_conn->ic_header_crc32c ? "CRC32C" : "None", 1567255570Strasz cs->cs_conn->ic_data_crc32c ? "CRC32C" : "None", 1568255570Strasz cs->cs_max_data_segment_length, 1569255570Strasz cs->cs_immediate_data, 1570255570Strasz cs->cs_conn->ic_iser); 1571255570Strasz if (error != 0) 1572255570Strasz break; 1573255570Strasz } 1574255570Strasz mtx_unlock(&softc->lock); 1575255570Strasz error = sbuf_printf(sb, "</ctlislist>\n"); 1576255570Strasz if (error != 0) { 1577255570Strasz sbuf_delete(sb); 1578255570Strasz ci->status = CTL_ISCSI_LIST_NEED_MORE_SPACE; 1579255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1580255570Strasz "Out of space, %d bytes is too small", cilp->alloc_len); 1581255570Strasz return; 1582255570Strasz } 1583255570Strasz sbuf_finish(sb); 1584255570Strasz 1585255570Strasz error = copyout(sbuf_data(sb), cilp->conn_xml, sbuf_len(sb) + 1); 1586255570Strasz cilp->fill_len = sbuf_len(sb) + 1; 1587255570Strasz ci->status = CTL_ISCSI_OK; 1588255570Strasz sbuf_delete(sb); 1589255570Strasz} 1590255570Strasz 1591255570Straszstatic void 1592255570Straszcfiscsi_ioctl_terminate(struct ctl_iscsi *ci) 1593255570Strasz{ 1594255570Strasz struct icl_pdu *response; 1595255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1596255570Strasz struct ctl_iscsi_terminate_params *citp; 1597255570Strasz struct cfiscsi_session *cs; 1598255570Strasz struct cfiscsi_softc *softc; 1599255570Strasz int found = 0; 1600255570Strasz 1601255570Strasz citp = (struct ctl_iscsi_terminate_params *)&(ci->data); 1602255570Strasz softc = &cfiscsi_softc; 1603255570Strasz 1604255570Strasz mtx_lock(&softc->lock); 1605255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1606255570Strasz if (citp->all == 0 && cs->cs_id != citp->connection_id && 1607255570Strasz strcmp(cs->cs_initiator_name, citp->initiator_name) != 0 && 1608255570Strasz strcmp(cs->cs_initiator_addr, citp->initiator_addr) != 0) 1609255570Strasz continue; 1610255570Strasz 1611255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1612255570Strasz if (response == NULL) { 1613255570Strasz /* 1614255570Strasz * Oh well. Just terminate the connection. 1615255570Strasz */ 1616255570Strasz } else { 1617255570Strasz bhsam = (struct iscsi_bhs_asynchronous_message *) 1618255570Strasz response->ip_bhs; 1619255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1620255570Strasz bhsam->bhsam_flags = 0x80; 1621255570Strasz bhsam->bhsam_0xffffffff = 0xffffffff; 1622255570Strasz bhsam->bhsam_async_event = 1623255570Strasz BHSAM_EVENT_TARGET_TERMINATES_SESSION; 1624255570Strasz cfiscsi_pdu_queue(response); 1625255570Strasz } 1626255570Strasz cfiscsi_session_terminate(cs); 1627255570Strasz found++; 1628255570Strasz } 1629255570Strasz mtx_unlock(&softc->lock); 1630255570Strasz 1631255570Strasz if (found == 0) { 1632255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1633255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1634255570Strasz "No matching connections found"); 1635255570Strasz return; 1636255570Strasz } 1637255570Strasz 1638255570Strasz ci->status = CTL_ISCSI_OK; 1639255570Strasz} 1640255570Strasz 1641255570Straszstatic void 1642255570Straszcfiscsi_ioctl_logout(struct ctl_iscsi *ci) 1643255570Strasz{ 1644255570Strasz struct icl_pdu *response; 1645255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1646255570Strasz struct ctl_iscsi_logout_params *cilp; 1647255570Strasz struct cfiscsi_session *cs; 1648255570Strasz struct cfiscsi_softc *softc; 1649255570Strasz int found = 0; 1650255570Strasz 1651255570Strasz cilp = (struct ctl_iscsi_logout_params *)&(ci->data); 1652255570Strasz softc = &cfiscsi_softc; 1653255570Strasz 1654255570Strasz mtx_lock(&softc->lock); 1655255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1656255570Strasz if (cilp->all == 0 && cs->cs_id != cilp->connection_id && 1657255570Strasz strcmp(cs->cs_initiator_name, cilp->initiator_name) != 0 && 1658255570Strasz strcmp(cs->cs_initiator_addr, cilp->initiator_addr) != 0) 1659255570Strasz continue; 1660255570Strasz 1661255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1662255570Strasz if (response == NULL) { 1663255570Strasz ci->status = CTL_ISCSI_ERROR; 1664255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1665255570Strasz "Unable to allocate memory"); 1666255570Strasz mtx_unlock(&softc->lock); 1667255570Strasz return; 1668255570Strasz } 1669255570Strasz bhsam = 1670255570Strasz (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1671255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1672255570Strasz bhsam->bhsam_flags = 0x80; 1673255570Strasz bhsam->bhsam_async_event = BHSAM_EVENT_TARGET_REQUESTS_LOGOUT; 1674255570Strasz bhsam->bhsam_parameter3 = htons(10); 1675255570Strasz cfiscsi_pdu_queue(response); 1676255570Strasz found++; 1677255570Strasz } 1678255570Strasz mtx_unlock(&softc->lock); 1679255570Strasz 1680255570Strasz if (found == 0) { 1681255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1682255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1683255570Strasz "No matching connections found"); 1684255570Strasz return; 1685255570Strasz } 1686255570Strasz 1687255570Strasz ci->status = CTL_ISCSI_OK; 1688255570Strasz} 1689255570Strasz 1690255570Strasz#ifdef ICL_KERNEL_PROXY 1691255570Straszstatic void 1692255570Straszcfiscsi_ioctl_listen(struct ctl_iscsi *ci) 1693255570Strasz{ 1694255570Strasz struct ctl_iscsi_listen_params *cilp; 1695255570Strasz struct sockaddr *sa; 1696255570Strasz int error; 1697255570Strasz 1698255570Strasz cilp = (struct ctl_iscsi_listen_params *)&(ci->data); 1699255570Strasz 1700255570Strasz if (cfiscsi_softc.listener == NULL) { 1701255570Strasz CFISCSI_DEBUG("no listener"); 1702255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "no listener"); 1703255570Strasz ci->status = CTL_ISCSI_ERROR; 1704255570Strasz return; 1705255570Strasz } 1706255570Strasz 1707255570Strasz error = getsockaddr(&sa, (void *)cilp->addr, cilp->addrlen); 1708255570Strasz if (error != 0) { 1709255570Strasz CFISCSI_DEBUG("getsockaddr, error %d", error); 1710255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "getsockaddr failed"); 1711255570Strasz ci->status = CTL_ISCSI_ERROR; 1712255570Strasz return; 1713255570Strasz } 1714255570Strasz 1715255570Strasz error = icl_listen_add(cfiscsi_softc.listener, cilp->iser, cilp->domain, 1716255570Strasz cilp->socktype, cilp->protocol, sa); 1717255570Strasz if (error != 0) { 1718255570Strasz free(sa, M_SONAME); 1719255570Strasz CFISCSI_DEBUG("icl_listen_add, error %d", error); 1720255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1721255570Strasz "icl_listen_add failed, error %d", error); 1722255570Strasz ci->status = CTL_ISCSI_ERROR; 1723255570Strasz return; 1724255570Strasz } 1725255570Strasz 1726255570Strasz ci->status = CTL_ISCSI_OK; 1727255570Strasz} 1728255570Strasz 1729255570Straszstatic void 1730255570Straszcfiscsi_ioctl_accept(struct ctl_iscsi *ci) 1731255570Strasz{ 1732255570Strasz struct ctl_iscsi_accept_params *ciap; 1733255570Strasz struct cfiscsi_session *cs; 1734255570Strasz int error; 1735255570Strasz 1736255570Strasz ciap = (struct ctl_iscsi_accept_params *)&(ci->data); 1737255570Strasz 1738255570Strasz mtx_lock(&cfiscsi_softc.lock); 1739255570Strasz for (;;) { 1740255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1741255570Strasz if (cs->cs_waiting_for_ctld) 1742255570Strasz break; 1743255570Strasz } 1744255570Strasz if (cs != NULL) 1745255570Strasz break; 1746255570Strasz error = cv_wait_sig(&cfiscsi_softc.accept_cv, &cfiscsi_softc.lock); 1747255570Strasz if (error != 0) { 1748255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1749255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "interrupted"); 1750255570Strasz ci->status = CTL_ISCSI_ERROR; 1751255570Strasz return; 1752255570Strasz } 1753255570Strasz } 1754255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1755255570Strasz 1756255570Strasz cs->cs_waiting_for_ctld = false; 1757255570Strasz cs->cs_login_phase = true; 1758255570Strasz 1759255570Strasz ciap->connection_id = cs->cs_id; 1760255570Strasz ci->status = CTL_ISCSI_OK; 1761255570Strasz} 1762255570Strasz 1763255570Straszstatic void 1764255570Straszcfiscsi_ioctl_send(struct ctl_iscsi *ci) 1765255570Strasz{ 1766255570Strasz struct ctl_iscsi_send_params *cisp; 1767255570Strasz struct cfiscsi_session *cs; 1768255570Strasz struct icl_pdu *ip; 1769255570Strasz size_t datalen; 1770255570Strasz void *data; 1771255570Strasz int error; 1772255570Strasz 1773255570Strasz cisp = (struct ctl_iscsi_send_params *)&(ci->data); 1774255570Strasz 1775255570Strasz mtx_lock(&cfiscsi_softc.lock); 1776255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1777255570Strasz if (cs->cs_id == cisp->connection_id) 1778255570Strasz break; 1779255570Strasz } 1780255570Strasz if (cs == NULL) { 1781255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1782255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1783255570Strasz ci->status = CTL_ISCSI_ERROR; 1784255570Strasz return; 1785255570Strasz } 1786255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1787255570Strasz 1788255570Strasz#if 0 1789255570Strasz if (cs->cs_login_phase == false) 1790255570Strasz return (EBUSY); 1791255570Strasz#endif 1792255570Strasz 1793255570Strasz if (cs->cs_terminating) { 1794255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection is terminating"); 1795255570Strasz ci->status = CTL_ISCSI_ERROR; 1796255570Strasz return; 1797255570Strasz } 1798255570Strasz 1799255570Strasz datalen = cisp->data_segment_len; 1800255570Strasz /* 1801255570Strasz * XXX 1802255570Strasz */ 1803255570Strasz //if (datalen > CFISCSI_MAX_DATA_SEGMENT_LENGTH) { 1804255570Strasz if (datalen > 65535) { 1805255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1806255570Strasz ci->status = CTL_ISCSI_ERROR; 1807255570Strasz return; 1808255570Strasz } 1809255570Strasz if (datalen > 0) { 1810255570Strasz data = malloc(datalen, M_CFISCSI, M_WAITOK); 1811255570Strasz error = copyin(cisp->data_segment, data, datalen); 1812255570Strasz if (error != 0) { 1813255570Strasz free(data, M_CFISCSI); 1814255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "copyin error %d", error); 1815255570Strasz ci->status = CTL_ISCSI_ERROR; 1816255570Strasz return; 1817255570Strasz } 1818255570Strasz } 1819255570Strasz 1820255570Strasz ip = icl_pdu_new_bhs(cs->cs_conn, M_WAITOK); 1821255570Strasz memcpy(ip->ip_bhs, cisp->bhs, sizeof(*ip->ip_bhs)); 1822255570Strasz if (datalen > 0) { 1823255570Strasz icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1824255570Strasz free(data, M_CFISCSI); 1825255570Strasz } 1826255570Strasz icl_pdu_queue(ip); 1827255570Strasz ci->status = CTL_ISCSI_OK; 1828255570Strasz} 1829255570Strasz 1830255570Straszstatic void 1831255570Straszcfiscsi_ioctl_receive(struct ctl_iscsi *ci) 1832255570Strasz{ 1833255570Strasz struct ctl_iscsi_receive_params *cirp; 1834255570Strasz struct cfiscsi_session *cs; 1835255570Strasz struct icl_pdu *ip; 1836255570Strasz void *data; 1837255570Strasz 1838255570Strasz cirp = (struct ctl_iscsi_receive_params *)&(ci->data); 1839255570Strasz 1840255570Strasz mtx_lock(&cfiscsi_softc.lock); 1841255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1842255570Strasz if (cs->cs_id == cirp->connection_id) 1843255570Strasz break; 1844255570Strasz } 1845255570Strasz if (cs == NULL) { 1846255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1847255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1848255570Strasz ci->status = CTL_ISCSI_ERROR; 1849255570Strasz return; 1850255570Strasz } 1851255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1852255570Strasz 1853255570Strasz#if 0 1854255570Strasz if (is->is_login_phase == false) 1855255570Strasz return (EBUSY); 1856255570Strasz#endif 1857255570Strasz 1858255570Strasz CFISCSI_SESSION_LOCK(cs); 1859255570Strasz while (cs->cs_login_pdu == NULL && 1860255570Strasz cs->cs_terminating == false) 1861255570Strasz cv_wait(&cs->cs_login_cv, &cs->cs_lock); 1862255570Strasz if (cs->cs_terminating) { 1863255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1864255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection terminating"); 1865255570Strasz ci->status = CTL_ISCSI_ERROR; 1866255570Strasz return; 1867255570Strasz } 1868255570Strasz ip = cs->cs_login_pdu; 1869255570Strasz cs->cs_login_pdu = NULL; 1870255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1871255570Strasz 1872255570Strasz if (ip->ip_data_len > cirp->data_segment_len) { 1873255570Strasz icl_pdu_free(ip); 1874255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1875255570Strasz ci->status = CTL_ISCSI_ERROR; 1876255570Strasz return; 1877255570Strasz } 1878255570Strasz 1879255570Strasz copyout(ip->ip_bhs, cirp->bhs, sizeof(*ip->ip_bhs)); 1880255570Strasz if (ip->ip_data_len > 0) { 1881255570Strasz data = malloc(ip->ip_data_len, M_CFISCSI, M_WAITOK); 1882255570Strasz icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1883255570Strasz copyout(data, cirp->data_segment, ip->ip_data_len); 1884255570Strasz free(data, M_CFISCSI); 1885255570Strasz } 1886255570Strasz 1887255570Strasz icl_pdu_free(ip); 1888255570Strasz ci->status = CTL_ISCSI_OK; 1889255570Strasz} 1890255570Strasz 1891255570Straszstatic void 1892255570Straszcfiscsi_ioctl_close(struct ctl_iscsi *ci) 1893255570Strasz{ 1894255570Strasz /* 1895255570Strasz * XXX 1896255570Strasz */ 1897255570Strasz} 1898255570Strasz#endif /* !ICL_KERNEL_PROXY */ 1899255570Strasz 1900255570Straszstatic int 1901255570Straszcfiscsi_ioctl(struct cdev *dev, 1902255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td) 1903255570Strasz{ 1904255570Strasz struct ctl_iscsi *ci; 1905255570Strasz 1906255570Strasz if (cmd != CTL_ISCSI) 1907255570Strasz return (ENOTTY); 1908255570Strasz 1909255570Strasz ci = (struct ctl_iscsi *)addr; 1910255570Strasz switch (ci->type) { 1911255570Strasz case CTL_ISCSI_HANDOFF: 1912255570Strasz cfiscsi_ioctl_handoff(ci); 1913255570Strasz break; 1914255570Strasz case CTL_ISCSI_LIST: 1915255570Strasz cfiscsi_ioctl_list(ci); 1916255570Strasz break; 1917255570Strasz case CTL_ISCSI_TERMINATE: 1918255570Strasz cfiscsi_ioctl_terminate(ci); 1919255570Strasz break; 1920255570Strasz case CTL_ISCSI_LOGOUT: 1921255570Strasz cfiscsi_ioctl_logout(ci); 1922255570Strasz break; 1923255570Strasz#ifdef ICL_KERNEL_PROXY 1924255570Strasz case CTL_ISCSI_LISTEN: 1925255570Strasz cfiscsi_ioctl_listen(ci); 1926255570Strasz break; 1927255570Strasz case CTL_ISCSI_ACCEPT: 1928255570Strasz cfiscsi_ioctl_accept(ci); 1929255570Strasz break; 1930255570Strasz case CTL_ISCSI_SEND: 1931255570Strasz cfiscsi_ioctl_send(ci); 1932255570Strasz break; 1933255570Strasz case CTL_ISCSI_RECEIVE: 1934255570Strasz cfiscsi_ioctl_receive(ci); 1935255570Strasz break; 1936255570Strasz case CTL_ISCSI_CLOSE: 1937255570Strasz cfiscsi_ioctl_close(ci); 1938255570Strasz break; 1939255570Strasz#endif /* ICL_KERNEL_PROXY */ 1940255570Strasz default: 1941255570Strasz ci->status = CTL_ISCSI_ERROR; 1942255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1943255570Strasz "%s: invalid iSCSI request type %d", __func__, ci->type); 1944255570Strasz break; 1945255570Strasz } 1946255570Strasz 1947255570Strasz return (0); 1948255570Strasz} 1949255570Strasz 1950255570Straszstatic int 1951255570Straszcfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len) 1952255570Strasz{ 1953255570Strasz struct cfiscsi_session *cs; 1954255570Strasz struct scsi_vpd_device_id *devid_ptr; 1955255570Strasz struct scsi_vpd_id_descriptor *desc, *desc1; 1956255570Strasz struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 1957255570Strasz struct scsi_vpd_id_t10 *t10id; 1958255570Strasz struct ctl_lun *lun; 1959255570Strasz const struct icl_pdu *request; 1960255570Strasz size_t devid_len, wwpn_len; 1961255570Strasz 1962255570Strasz lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 1963255570Strasz request = ctsio->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1964255570Strasz cs = PDU_SESSION(request); 1965255570Strasz 1966255570Strasz wwpn_len = strlen(cs->cs_target->ct_name); 1967255570Strasz wwpn_len += strlen(",t,0x01"); 1968255570Strasz wwpn_len += 1; /* '\0' */ 1969255570Strasz if ((wwpn_len % 4) != 0) 1970255570Strasz wwpn_len += (4 - (wwpn_len % 4)); 1971255570Strasz 1972255570Strasz devid_len = sizeof(struct scsi_vpd_device_id) + 1973255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 1974255570Strasz sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 1975255570Strasz sizeof(struct scsi_vpd_id_descriptor) + wwpn_len + 1976255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 1977255570Strasz sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 1978255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 1979255570Strasz sizeof(struct scsi_vpd_id_trgt_port_grp_id); 1980255570Strasz 1981255570Strasz ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO); 1982255570Strasz devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 1983255570Strasz ctsio->kern_sg_entries = 0; 1984255570Strasz 1985255570Strasz if (devid_len < alloc_len) { 1986255570Strasz ctsio->residual = alloc_len - devid_len; 1987255570Strasz ctsio->kern_data_len = devid_len; 1988255570Strasz ctsio->kern_total_len = devid_len; 1989255570Strasz } else { 1990255570Strasz ctsio->residual = 0; 1991255570Strasz ctsio->kern_data_len = alloc_len; 1992255570Strasz ctsio->kern_total_len = alloc_len; 1993255570Strasz } 1994255570Strasz ctsio->kern_data_resid = 0; 1995255570Strasz ctsio->kern_rel_offset = 0; 1996255570Strasz ctsio->kern_sg_entries = 0; 1997255570Strasz 1998255570Strasz desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 1999255570Strasz t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 2000255570Strasz desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 2001255570Strasz sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 2002255570Strasz desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 2003255570Strasz wwpn_len); 2004255570Strasz desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 2005255570Strasz sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 2006255570Strasz 2007255570Strasz if (lun != NULL) 2008255570Strasz devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 2009255570Strasz lun->be_lun->lun_type; 2010255570Strasz else 2011255570Strasz devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 2012255570Strasz 2013255570Strasz devid_ptr->page_code = SVPD_DEVICE_ID; 2014255570Strasz 2015255570Strasz scsi_ulto2b(devid_len - 4, devid_ptr->length); 2016255570Strasz 2017255570Strasz /* 2018255570Strasz * We're using a LUN association here. i.e., this device ID is a 2019255570Strasz * per-LUN identifier. 2020255570Strasz */ 2021255570Strasz desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_ASCII; 2022255570Strasz desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 2023255570Strasz desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 2024255570Strasz strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 2025255570Strasz 2026255570Strasz /* 2027255570Strasz * If we've actually got a backend, copy the device id from the 2028255570Strasz * per-LUN data. Otherwise, set it to all spaces. 2029255570Strasz */ 2030255570Strasz if (lun != NULL) { 2031255570Strasz /* 2032255570Strasz * Copy the backend's LUN ID. 2033255570Strasz */ 2034255570Strasz strncpy((char *)t10id->vendor_spec_id, 2035255570Strasz (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 2036255570Strasz } else { 2037255570Strasz /* 2038255570Strasz * No backend, set this to spaces. 2039255570Strasz */ 2040255570Strasz memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 2041255570Strasz } 2042255570Strasz 2043255570Strasz /* 2044255570Strasz * desc1 is for the WWPN which is a port asscociation. 2045255570Strasz */ 2046255570Strasz desc1->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2047255570Strasz desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2048255570Strasz SVPD_ID_TYPE_SCSI_NAME; 2049255570Strasz desc1->length = wwpn_len; 2050255570Strasz snprintf(desc1->identifier, wwpn_len, "%s,t,0x%x", 2051255570Strasz cs->cs_target->ct_name, cs->cs_portal_group_tag); 2052255570Strasz 2053255570Strasz /* 2054255570Strasz * desc2 is for the Relative Target Port(type 4h) identifier 2055255570Strasz */ 2056255570Strasz desc2->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY; 2057255570Strasz desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2058255570Strasz SVPD_ID_TYPE_RELTARG; 2059255570Strasz desc2->length = 4; 2060255570Strasz desc2->identifier[3] = 1; 2061255570Strasz 2062255570Strasz /* 2063255570Strasz * desc3 is for the Target Port Group(type 5h) identifier 2064255570Strasz */ 2065255570Strasz desc3->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY; 2066255570Strasz desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2067255570Strasz SVPD_ID_TYPE_TPORTGRP; 2068255570Strasz desc3->length = 4; 2069255570Strasz desc3->identifier[3] = 1; 2070255570Strasz 2071255570Strasz ctsio->scsi_status = SCSI_STATUS_OK; 2072255570Strasz 2073255570Strasz ctsio->be_move_done = ctl_config_move_done; 2074255570Strasz ctl_datamove((union ctl_io *)ctsio); 2075255570Strasz 2076255570Strasz return (CTL_RETVAL_COMPLETE); 2077255570Strasz} 2078255570Strasz 2079255570Straszstatic void 2080255570Straszcfiscsi_target_hold(struct cfiscsi_target *ct) 2081255570Strasz{ 2082255570Strasz 2083255570Strasz refcount_acquire(&ct->ct_refcount); 2084255570Strasz} 2085255570Strasz 2086255570Straszstatic void 2087255570Straszcfiscsi_target_release(struct cfiscsi_target *ct) 2088255570Strasz{ 2089255570Strasz int old; 2090255570Strasz struct cfiscsi_softc *softc; 2091255570Strasz 2092255570Strasz softc = ct->ct_softc; 2093255570Strasz 2094255570Strasz old = ct->ct_refcount; 2095255570Strasz if (old > 1 && atomic_cmpset_int(&ct->ct_refcount, old, old - 1)) 2096255570Strasz return; 2097255570Strasz 2098255570Strasz mtx_lock(&softc->lock); 2099255570Strasz if (refcount_release(&ct->ct_refcount)) { 2100255570Strasz TAILQ_REMOVE(&softc->targets, ct, ct_next); 2101255570Strasz mtx_unlock(&softc->lock); 2102255570Strasz free(ct, M_CFISCSI); 2103255570Strasz 2104255570Strasz return; 2105255570Strasz } 2106255570Strasz mtx_unlock(&softc->lock); 2107255570Strasz} 2108255570Strasz 2109255570Straszstatic struct cfiscsi_target * 2110255570Straszcfiscsi_target_find(struct cfiscsi_softc *softc, const char *name) 2111255570Strasz{ 2112255570Strasz struct cfiscsi_target *ct; 2113255570Strasz 2114255570Strasz mtx_lock(&softc->lock); 2115255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2116255570Strasz if (strcmp(name, ct->ct_name) != 0) 2117255570Strasz continue; 2118255570Strasz cfiscsi_target_hold(ct); 2119255570Strasz mtx_unlock(&softc->lock); 2120255570Strasz return (ct); 2121255570Strasz } 2122255570Strasz mtx_unlock(&softc->lock); 2123255570Strasz 2124255570Strasz return (NULL); 2125255570Strasz} 2126255570Strasz 2127255570Straszstatic struct cfiscsi_target * 2128255570Straszcfiscsi_target_find_or_create(struct cfiscsi_softc *softc, const char *name, 2129255570Strasz const char *alias) 2130255570Strasz{ 2131255570Strasz struct cfiscsi_target *ct, *newct; 2132255570Strasz int i; 2133255570Strasz 2134255570Strasz if (name[0] == '\0' || strlen(name) >= CTL_ISCSI_NAME_LEN) 2135255570Strasz return (NULL); 2136255570Strasz 2137255570Strasz newct = malloc(sizeof(*newct), M_CFISCSI, M_WAITOK | M_ZERO); 2138255570Strasz 2139255570Strasz mtx_lock(&softc->lock); 2140255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2141255570Strasz if (strcmp(name, ct->ct_name) != 0) 2142255570Strasz continue; 2143255570Strasz cfiscsi_target_hold(ct); 2144255570Strasz mtx_unlock(&softc->lock); 2145255570Strasz free(newct, M_CFISCSI); 2146255570Strasz return (ct); 2147255570Strasz } 2148255570Strasz 2149255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) 2150255570Strasz newct->ct_luns[i] = -1; 2151255570Strasz 2152255570Strasz strlcpy(newct->ct_name, name, sizeof(newct->ct_name)); 2153255570Strasz if (alias != NULL) 2154255570Strasz strlcpy(newct->ct_alias, alias, sizeof(newct->ct_alias)); 2155255570Strasz refcount_init(&newct->ct_refcount, 1); 2156255570Strasz newct->ct_softc = softc; 2157255570Strasz TAILQ_INSERT_TAIL(&softc->targets, newct, ct_next); 2158255570Strasz mtx_unlock(&softc->lock); 2159255570Strasz 2160255570Strasz return (newct); 2161255570Strasz} 2162255570Strasz 2163255570Strasz/* 2164255570Strasz * Takes LUN from the target space and returns LUN from the CTL space. 2165255570Strasz */ 2166255570Straszstatic uint32_t 2167255570Straszcfiscsi_map_lun(void *arg, uint32_t lun) 2168255570Strasz{ 2169255570Strasz struct cfiscsi_session *cs; 2170255570Strasz 2171255570Strasz cs = arg; 2172255570Strasz 2173255570Strasz if (lun >= CTL_MAX_LUNS) { 2174255570Strasz CFISCSI_DEBUG("requested lun number %d is higher " 2175255570Strasz "than maximum %d", lun, CTL_MAX_LUNS - 1); 2176255570Strasz return (0xffffffff); 2177255570Strasz } 2178255570Strasz 2179255570Strasz if (cs->cs_target->ct_luns[lun] < 0) 2180255570Strasz return (0xffffffff); 2181255570Strasz 2182255570Strasz return (cs->cs_target->ct_luns[lun]); 2183255570Strasz} 2184255570Strasz 2185255570Straszstatic int 2186255570Straszcfiscsi_target_set_lun(struct cfiscsi_target *ct, 2187255570Strasz unsigned long lun_id, unsigned long ctl_lun_id) 2188255570Strasz{ 2189255570Strasz 2190255570Strasz if (lun_id >= CTL_MAX_LUNS) { 2191255570Strasz CFISCSI_WARN("requested lun number %ld is higher " 2192255570Strasz "than maximum %d", lun_id, CTL_MAX_LUNS - 1); 2193255570Strasz return (-1); 2194255570Strasz } 2195255570Strasz 2196255570Strasz if (ct->ct_luns[lun_id] >= 0) { 2197255570Strasz /* 2198255570Strasz * CTL calls cfiscsi_lun_enable() twice for each LUN - once 2199255570Strasz * when the LUN is created, and a second time just before 2200255570Strasz * the port is brought online; don't emit warnings 2201255570Strasz * for that case. 2202255570Strasz */ 2203255570Strasz if (ct->ct_luns[lun_id] == ctl_lun_id) 2204255570Strasz return (0); 2205255570Strasz CFISCSI_WARN("lun %ld already allocated", lun_id); 2206255570Strasz return (-1); 2207255570Strasz } 2208255570Strasz 2209255570Strasz#if 0 2210255570Strasz CFISCSI_DEBUG("adding mapping for lun %ld, target %s " 2211255570Strasz "to ctl lun %ld", lun_id, ct->ct_name, ctl_lun_id); 2212255570Strasz#endif 2213255570Strasz 2214255570Strasz ct->ct_luns[lun_id] = ctl_lun_id; 2215255570Strasz cfiscsi_target_hold(ct); 2216255570Strasz 2217255570Strasz return (0); 2218255570Strasz} 2219255570Strasz 2220255570Straszstatic int 2221255570Straszcfiscsi_target_unset_lun(struct cfiscsi_target *ct, unsigned long lun_id) 2222255570Strasz{ 2223255570Strasz 2224255570Strasz if (ct->ct_luns[lun_id] < 0) { 2225255570Strasz CFISCSI_WARN("lun %ld not allocated", lun_id); 2226255570Strasz return (-1); 2227255570Strasz } 2228255570Strasz 2229255570Strasz ct->ct_luns[lun_id] = -1; 2230255570Strasz cfiscsi_target_release(ct); 2231255570Strasz 2232255570Strasz return (0); 2233255570Strasz} 2234255570Strasz 2235255570Straszstatic int 2236255570Straszcfiscsi_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 2237255570Strasz{ 2238255570Strasz struct cfiscsi_softc *softc; 2239255570Strasz struct cfiscsi_target *ct; 2240255570Strasz struct ctl_be_lun_option *opt; 2241255570Strasz const char *target = NULL, *target_alias = NULL; 2242255570Strasz const char *lun = NULL; 2243255570Strasz unsigned long tmp; 2244255570Strasz 2245255570Strasz softc = (struct cfiscsi_softc *)arg; 2246255570Strasz 2247255570Strasz STAILQ_FOREACH(opt, 2248255570Strasz &control_softc->ctl_luns[lun_id]->be_lun->options, links) { 2249255570Strasz if (strcmp(opt->name, "cfiscsi_target") == 0) 2250255570Strasz target = opt->value; 2251255570Strasz else if (strcmp(opt->name, "cfiscsi_target_alias") == 0) 2252255570Strasz target_alias = opt->value; 2253255570Strasz else if (strcmp(opt->name, "cfiscsi_lun") == 0) 2254255570Strasz lun = opt->value; 2255255570Strasz } 2256255570Strasz 2257255570Strasz if (target == NULL && lun == NULL) 2258255570Strasz return (0); 2259255570Strasz 2260255570Strasz if (target == NULL || lun == NULL) { 2261255570Strasz CFISCSI_WARN("lun added with cfiscsi_target, but without " 2262255570Strasz "cfiscsi_lun, or the other way around; ignoring"); 2263255570Strasz return (0); 2264255570Strasz } 2265255570Strasz 2266255570Strasz ct = cfiscsi_target_find_or_create(softc, target, target_alias); 2267255570Strasz if (ct == NULL) { 2268255570Strasz CFISCSI_WARN("failed to create target \"%s\"", target); 2269255570Strasz return (0); 2270255570Strasz } 2271255570Strasz 2272255570Strasz tmp = strtoul(lun, NULL, 10); 2273255570Strasz cfiscsi_target_set_lun(ct, tmp, lun_id); 2274255570Strasz return (0); 2275255570Strasz} 2276255570Strasz 2277255570Straszstatic int 2278255570Straszcfiscsi_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 2279255570Strasz{ 2280255570Strasz struct cfiscsi_softc *softc; 2281255570Strasz struct cfiscsi_target *ct; 2282255570Strasz int i; 2283255570Strasz 2284255570Strasz softc = (struct cfiscsi_softc *)arg; 2285255570Strasz 2286255570Strasz mtx_lock(&softc->lock); 2287255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2288255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) { 2289255570Strasz if (ct->ct_luns[i] < 0) 2290255570Strasz continue; 2291255570Strasz if (ct->ct_luns[i] != lun_id) 2292255570Strasz continue; 2293255570Strasz cfiscsi_target_unset_lun(ct, i); 2294255570Strasz break; 2295255570Strasz } 2296255570Strasz } 2297255570Strasz mtx_unlock(&softc->lock); 2298255570Strasz return (0); 2299255570Strasz} 2300255570Strasz 2301255570Straszstatic void 2302256065Straszcfiscsi_datamove_in(union ctl_io *io) 2303255570Strasz{ 2304255570Strasz struct cfiscsi_session *cs; 2305255570Strasz struct icl_pdu *request, *response; 2306255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 2307255570Strasz struct iscsi_bhs_data_in *bhsdi; 2308255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2309255570Strasz size_t copy_len, len, off; 2310255570Strasz const char *addr; 2311255824Strasz int ctl_sg_count, error, i; 2312255570Strasz 2313255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2314255570Strasz cs = PDU_SESSION(request); 2315255570Strasz 2316255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2317255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2318255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2319255570Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2320255570Strasz 2321255570Strasz if (io->scsiio.kern_sg_entries > 0) { 2322255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2323255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 2324255570Strasz } else { 2325255570Strasz ctl_sglist = &ctl_sg_entry; 2326255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 2327255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 2328255570Strasz ctl_sg_count = 1; 2329255570Strasz } 2330255570Strasz 2331255570Strasz /* 2332255570Strasz * We need to record it so that we can properly report 2333255570Strasz * underflow/underflow. 2334255570Strasz */ 2335255570Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2336255570Strasz 2337256065Strasz /* 2338256065Strasz * This is the offset within the current SCSI command; 2339256065Strasz * i.e. for the first call of datamove(), it will be 0, 2340256065Strasz * and for subsequent ones it will be the sum of lengths 2341256065Strasz * of previous ones. 2342256065Strasz */ 2343256065Strasz off = htonl(io->scsiio.kern_rel_offset); 2344255570Strasz 2345256065Strasz i = 0; 2346256065Strasz addr = NULL; 2347256065Strasz len = 0; 2348256065Strasz response = NULL; 2349256065Strasz bhsdi = NULL; 2350256065Strasz for (;;) { 2351256065Strasz KASSERT(i < ctl_sg_count, ("i >= ctl_sg_count")); 2352256065Strasz if (response == NULL) { 2353256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2354255570Strasz if (response == NULL) { 2355255824Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2356255824Strasz "allocate memory; dropping connection"); 2357256163Strasz ctl_set_busy(&io->scsiio); 2358256163Strasz io->scsiio.be_move_done(io); 2359255824Strasz cfiscsi_session_terminate(cs); 2360255824Strasz return; 2361255824Strasz } 2362256065Strasz bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 2363256065Strasz bhsdi->bhsdi_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_IN; 2364256065Strasz bhsdi->bhsdi_initiator_task_tag = 2365256065Strasz bhssc->bhssc_initiator_task_tag; 2366256065Strasz bhsdi->bhsdi_datasn = htonl(PDU_EXPDATASN(request)); 2367256065Strasz PDU_EXPDATASN(request)++; 2368256065Strasz bhsdi->bhsdi_buffer_offset = htonl(off); 2369256065Strasz } 2370255570Strasz 2371256065Strasz if (len == 0) { 2372256065Strasz addr = ctl_sglist[i].addr; 2373256065Strasz len = ctl_sglist[i].len; 2374256065Strasz KASSERT(len > 0, ("len <= 0")); 2375256065Strasz } 2376255570Strasz 2377256065Strasz copy_len = len; 2378256065Strasz if (response->ip_data_len + copy_len > 2379256065Strasz cs->cs_max_data_segment_length) 2380256065Strasz copy_len = cs->cs_max_data_segment_length - 2381256065Strasz response->ip_data_len; 2382256065Strasz KASSERT(copy_len <= len, ("copy_len > len")); 2383256065Strasz error = icl_pdu_append_data(response, addr, copy_len, M_NOWAIT); 2384256065Strasz if (error != 0) { 2385256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2386256065Strasz "allocate memory; dropping connection"); 2387256065Strasz icl_pdu_free(response); 2388256163Strasz ctl_set_busy(&io->scsiio); 2389256163Strasz io->scsiio.be_move_done(io); 2390256065Strasz cfiscsi_session_terminate(cs); 2391256065Strasz return; 2392256065Strasz } 2393256065Strasz addr += copy_len; 2394256065Strasz len -= copy_len; 2395256065Strasz off += copy_len; 2396256065Strasz io->scsiio.ext_data_filled += copy_len; 2397256065Strasz 2398256065Strasz if (len == 0) { 2399256065Strasz /* 2400256065Strasz * End of scatter-gather segment; 2401256065Strasz * proceed to the next one... 2402256065Strasz */ 2403256065Strasz if (i == ctl_sg_count - 1) { 2404255570Strasz /* 2405256065Strasz * ... unless this was the last one. 2406255570Strasz */ 2407256065Strasz break; 2408255570Strasz } 2409256065Strasz i++; 2410255570Strasz } 2411256065Strasz 2412256065Strasz if (response->ip_data_len == cs->cs_max_data_segment_length) { 2413256065Strasz /* 2414256065Strasz * Can't stuff more data into the current PDU; 2415256065Strasz * queue it. Note that's not enough to check 2416256195Strasz * for kern_data_resid == 0 instead; there 2417256065Strasz * may be several Data-In PDUs for the final 2418256065Strasz * call to cfiscsi_datamove(), and we want 2419256065Strasz * to set the F flag only on the last of them. 2420256065Strasz */ 2421256065Strasz if (off == io->scsiio.kern_total_len) 2422255570Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2423255570Strasz KASSERT(response->ip_data_len > 0, 2424255570Strasz ("sending empty Data-In")); 2425255570Strasz cfiscsi_pdu_queue(response); 2426256065Strasz response = NULL; 2427256065Strasz bhsdi = NULL; 2428255570Strasz } 2429256065Strasz } 2430256065Strasz KASSERT(i == ctl_sg_count - 1, ("missed SG segment")); 2431256065Strasz KASSERT(len == 0, ("missed data from SG segment")); 2432256065Strasz if (response != NULL) { 2433256065Strasz if (off == io->scsiio.kern_total_len) { 2434256065Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2435256201Strasz#if 0 2436256065Strasz } else { 2437256065Strasz CFISCSI_SESSION_DEBUG(cs, "not setting the F flag; " 2438256065Strasz "have %zd, need %zd", off, 2439256065Strasz (size_t)io->scsiio.kern_total_len); 2440256201Strasz#endif 2441256065Strasz } 2442256065Strasz KASSERT(response->ip_data_len > 0, ("sending empty Data-In")); 2443256065Strasz cfiscsi_pdu_queue(response); 2444256065Strasz } 2445255570Strasz 2446256065Strasz io->scsiio.be_move_done(io); 2447256065Strasz} 2448255570Strasz 2449256065Straszstatic void 2450256065Straszcfiscsi_datamove_out(union ctl_io *io) 2451256065Strasz{ 2452256065Strasz struct cfiscsi_session *cs; 2453256065Strasz struct icl_pdu *request, *response; 2454256065Strasz const struct iscsi_bhs_scsi_command *bhssc; 2455256065Strasz struct iscsi_bhs_r2t *bhsr2t; 2456256065Strasz struct cfiscsi_data_wait *cdw; 2457256065Strasz uint32_t target_transfer_tag; 2458256065Strasz bool done; 2459256065Strasz 2460256065Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2461256065Strasz cs = PDU_SESSION(request); 2462256065Strasz 2463256065Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2464256065Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2465256065Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2466256065Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2467256065Strasz 2468256065Strasz /* 2469256065Strasz * We need to record it so that we can properly report 2470256065Strasz * underflow/underflow. 2471256065Strasz */ 2472256065Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2473256065Strasz 2474256065Strasz CFISCSI_SESSION_LOCK(cs); 2475256065Strasz target_transfer_tag = cs->cs_target_transfer_tag; 2476256065Strasz cs->cs_target_transfer_tag++; 2477256065Strasz CFISCSI_SESSION_UNLOCK(cs); 2478256065Strasz 2479255570Strasz#if 0 2480256065Strasz CFISCSI_SESSION_DEBUG(cs, "expecting Data-Out with initiator " 2481256065Strasz "task tag 0x%x, target transfer tag 0x%x", 2482256065Strasz bhssc->bhssc_initiator_task_tag, target_transfer_tag); 2483255570Strasz#endif 2484256065Strasz cdw = uma_zalloc(cfiscsi_data_wait_zone, M_NOWAIT | M_ZERO); 2485256065Strasz if (cdw == NULL) { 2486256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2487256065Strasz "allocate memory; dropping connection"); 2488256163Strasz ctl_set_busy(&io->scsiio); 2489256163Strasz io->scsiio.be_move_done(io); 2490256065Strasz cfiscsi_session_terminate(cs); 2491256163Strasz return; 2492256065Strasz } 2493256065Strasz cdw->cdw_ctl_io = io; 2494256065Strasz cdw->cdw_target_transfer_tag = htonl(target_transfer_tag); 2495256065Strasz cdw->cdw_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2496256065Strasz 2497256065Strasz if (cs->cs_immediate_data && icl_pdu_data_segment_length(request) > 0) { 2498256065Strasz done = cfiscsi_handle_data_segment(request, cdw); 2499256065Strasz if (done) { 2500256065Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2501256065Strasz io->scsiio.be_move_done(io); 2502256065Strasz return; 2503255837Strasz } 2504255570Strasz 2505255570Strasz#if 0 2506256065Strasz if (io->scsiio.ext_data_filled != 0) 2507256065Strasz CFISCSI_SESSION_DEBUG(cs, "got %zd bytes of immediate data, need %zd", 2508256065Strasz io->scsiio.ext_data_filled, io->scsiio.kern_data_len); 2509255570Strasz#endif 2510256065Strasz } 2511255570Strasz 2512256065Strasz CFISCSI_SESSION_LOCK(cs); 2513256065Strasz TAILQ_INSERT_TAIL(&cs->cs_waiting_for_data_out, cdw, cdw_next); 2514256065Strasz CFISCSI_SESSION_UNLOCK(cs); 2515255570Strasz 2516256065Strasz /* 2517256065Strasz * XXX: We should limit the number of outstanding R2T PDUs 2518256065Strasz * per task to MaxOutstandingR2T. 2519256065Strasz */ 2520256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2521256065Strasz if (response == NULL) { 2522256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2523256065Strasz "allocate memory; dropping connection"); 2524256163Strasz ctl_set_busy(&io->scsiio); 2525256163Strasz io->scsiio.be_move_done(io); 2526256065Strasz cfiscsi_session_terminate(cs); 2527256163Strasz return; 2528255570Strasz } 2529256065Strasz bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 2530256065Strasz bhsr2t->bhsr2t_opcode = ISCSI_BHS_OPCODE_R2T; 2531256065Strasz bhsr2t->bhsr2t_flags = 0x80; 2532256065Strasz bhsr2t->bhsr2t_lun = bhssc->bhssc_lun; 2533256065Strasz bhsr2t->bhsr2t_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2534256065Strasz bhsr2t->bhsr2t_target_transfer_tag = htonl(target_transfer_tag); 2535256065Strasz /* 2536256065Strasz * XXX: Here we assume that cfiscsi_datamove() won't ever 2537256065Strasz * be running concurrently on several CPUs for a given 2538256065Strasz * command. 2539256065Strasz */ 2540256065Strasz bhsr2t->bhsr2t_r2tsn = htonl(PDU_R2TSN(request)); 2541256065Strasz PDU_R2TSN(request)++; 2542256065Strasz /* 2543256065Strasz * This is the offset within the current SCSI command; 2544256065Strasz * i.e. for the first call of datamove(), it will be 0, 2545256065Strasz * and for subsequent ones it will be the sum of lengths 2546256065Strasz * of previous ones. 2547256065Strasz * 2548256065Strasz * The ext_data_filled is to account for unsolicited 2549256065Strasz * (immediate) data that might have already arrived. 2550256065Strasz */ 2551256065Strasz bhsr2t->bhsr2t_buffer_offset = 2552256065Strasz htonl(io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled); 2553256065Strasz /* 2554256065Strasz * This is the total length (sum of S/G lengths) this call 2555256065Strasz * to cfiscsi_datamove() is supposed to handle. 2556256065Strasz * 2557256065Strasz * XXX: Limit it to MaxBurstLength. 2558256065Strasz */ 2559256065Strasz bhsr2t->bhsr2t_desired_data_transfer_length = 2560256065Strasz htonl(io->scsiio.kern_data_len - io->scsiio.ext_data_filled); 2561256065Strasz cfiscsi_pdu_queue(response); 2562255570Strasz} 2563255570Strasz 2564255570Straszstatic void 2565256065Straszcfiscsi_datamove(union ctl_io *io) 2566256065Strasz{ 2567256065Strasz 2568256065Strasz if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 2569256065Strasz cfiscsi_datamove_in(io); 2570256065Strasz else 2571256065Strasz cfiscsi_datamove_out(io); 2572256065Strasz} 2573256065Strasz 2574256065Straszstatic void 2575255570Straszcfiscsi_scsi_command_done(union ctl_io *io) 2576255570Strasz{ 2577255570Strasz struct icl_pdu *request, *response; 2578255570Strasz struct iscsi_bhs_scsi_command *bhssc; 2579255570Strasz struct iscsi_bhs_scsi_response *bhssr; 2580255570Strasz#ifdef DIAGNOSTIC 2581255570Strasz struct cfiscsi_data_wait *cdw; 2582255570Strasz#endif 2583255570Strasz struct cfiscsi_session *cs; 2584255570Strasz uint16_t sense_length; 2585255570Strasz 2586255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2587255570Strasz cs = PDU_SESSION(request); 2588255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2589255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2590255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2591255570Strasz ("replying to wrong opcode 0x%x", bhssc->bhssc_opcode)); 2592255570Strasz 2593255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 2594255570Strasz // bhssc->bhssc_initiator_task_tag); 2595255570Strasz 2596255570Strasz#ifdef DIAGNOSTIC 2597255570Strasz CFISCSI_SESSION_LOCK(cs); 2598255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) 2599255570Strasz KASSERT(bhssc->bhssc_initiator_task_tag != 2600255570Strasz cdw->cdw_initiator_task_tag, ("dangling cdw")); 2601255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2602255570Strasz#endif 2603255570Strasz 2604255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2605255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 2606255570Strasz bhssr->bhssr_opcode = ISCSI_BHS_OPCODE_SCSI_RESPONSE; 2607255570Strasz bhssr->bhssr_flags = 0x80; 2608255570Strasz /* 2609255570Strasz * XXX: We don't deal with bidirectional under/overflows; 2610255570Strasz * does anything actually support those? 2611255570Strasz */ 2612255570Strasz if (PDU_TOTAL_TRANSFER_LEN(request) < 2613255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2614255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_UNDERFLOW; 2615255570Strasz bhssr->bhssr_residual_count = 2616255570Strasz htonl(ntohl(bhssc->bhssc_expected_data_transfer_length) - 2617255570Strasz PDU_TOTAL_TRANSFER_LEN(request)); 2618255570Strasz //CFISCSI_SESSION_DEBUG(cs, "underflow; residual count %d", 2619255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2620255570Strasz } else if (PDU_TOTAL_TRANSFER_LEN(request) > 2621255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2622255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_OVERFLOW; 2623255570Strasz bhssr->bhssr_residual_count = 2624255570Strasz htonl(PDU_TOTAL_TRANSFER_LEN(request) - 2625255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)); 2626255570Strasz //CFISCSI_SESSION_DEBUG(cs, "overflow; residual count %d", 2627255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2628255570Strasz } 2629255570Strasz bhssr->bhssr_response = BHSSR_RESPONSE_COMMAND_COMPLETED; 2630255570Strasz bhssr->bhssr_status = io->scsiio.scsi_status; 2631255570Strasz bhssr->bhssr_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2632255570Strasz bhssr->bhssr_expdatasn = htonl(PDU_EXPDATASN(request)); 2633255570Strasz 2634255570Strasz if (io->scsiio.sense_len > 0) { 2635255570Strasz#if 0 2636255570Strasz CFISCSI_SESSION_DEBUG(cs, "returning %d bytes of sense data", 2637255570Strasz io->scsiio.sense_len); 2638255570Strasz#endif 2639255570Strasz sense_length = htons(io->scsiio.sense_len); 2640255570Strasz icl_pdu_append_data(response, 2641255570Strasz &sense_length, sizeof(sense_length), M_WAITOK); 2642255570Strasz icl_pdu_append_data(response, 2643255570Strasz &io->scsiio.sense_data, io->scsiio.sense_len, M_WAITOK); 2644255570Strasz } 2645255570Strasz 2646255570Strasz ctl_free_io(io); 2647255570Strasz icl_pdu_free(request); 2648255570Strasz cfiscsi_pdu_queue(response); 2649255570Strasz} 2650255570Strasz 2651255570Straszstatic void 2652255570Straszcfiscsi_task_management_done(union ctl_io *io) 2653255570Strasz{ 2654255570Strasz struct icl_pdu *request, *response; 2655255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 2656255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 2657255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 2658255570Strasz struct cfiscsi_session *cs; 2659255570Strasz 2660255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2661255570Strasz cs = PDU_SESSION(request); 2662255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2663255570Strasz KASSERT((bhstmr->bhstmr_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2664255570Strasz ISCSI_BHS_OPCODE_TASK_REQUEST, 2665255570Strasz ("replying to wrong opcode 0x%x", bhstmr->bhstmr_opcode)); 2666255570Strasz 2667255570Strasz#if 0 2668255570Strasz CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x; referenced task tag 0x%x", 2669255570Strasz bhstmr->bhstmr_initiator_task_tag, 2670255570Strasz bhstmr->bhstmr_referenced_task_tag); 2671255570Strasz#endif 2672255570Strasz 2673255570Strasz if ((bhstmr->bhstmr_function & ~0x80) == 2674255570Strasz BHSTMR_FUNCTION_ABORT_TASK) { 2675255570Strasz /* 2676255570Strasz * Make sure we no longer wait for Data-Out for this command. 2677255570Strasz */ 2678255570Strasz CFISCSI_SESSION_LOCK(cs); 2679255570Strasz TAILQ_FOREACH_SAFE(cdw, 2680255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 2681255570Strasz if (bhstmr->bhstmr_referenced_task_tag != 2682255570Strasz cdw->cdw_initiator_task_tag) 2683255570Strasz continue; 2684255570Strasz 2685255570Strasz#if 0 2686255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task " 2687255570Strasz "tag 0x%x", bhstmr->bhstmr_initiator_task_tag); 2688255570Strasz#endif 2689255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, 2690255570Strasz cdw, cdw_next); 2691255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 2692255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2693255570Strasz } 2694255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2695255570Strasz } 2696255570Strasz 2697255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2698255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 2699255570Strasz response->ip_bhs; 2700255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 2701255570Strasz bhstmr2->bhstmr_flags = 0x80; 2702255570Strasz if (io->io_hdr.status == CTL_SUCCESS) { 2703255570Strasz bhstmr2->bhstmr_response = BHSTMR_RESPONSE_FUNCTION_COMPLETE; 2704255570Strasz } else { 2705255570Strasz /* 2706255570Strasz * XXX: How to figure out what exactly went wrong? iSCSI spec 2707255570Strasz * expects us to provide detailed error, e.g. "Task does 2708255570Strasz * not exist" or "LUN does not exist". 2709255570Strasz */ 2710255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED"); 2711255570Strasz bhstmr2->bhstmr_response = 2712255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 2713255570Strasz } 2714255570Strasz bhstmr2->bhstmr_initiator_task_tag = bhstmr->bhstmr_initiator_task_tag; 2715255570Strasz 2716255570Strasz ctl_free_io(io); 2717255570Strasz icl_pdu_free(request); 2718255570Strasz cfiscsi_pdu_queue(response); 2719255570Strasz} 2720255570Strasz 2721255570Straszstatic void 2722255570Straszcfiscsi_done(union ctl_io *io) 2723255570Strasz{ 2724255570Strasz struct icl_pdu *request; 2725255570Strasz struct cfiscsi_session *cs; 2726255570Strasz 2727255570Strasz KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 2728255570Strasz ("invalid CTL status %#x", io->io_hdr.status)); 2729255570Strasz 2730255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2731255570Strasz if (request == NULL) { 2732255570Strasz /* 2733255570Strasz * Implicit task termination has just completed; nothing to do. 2734255570Strasz */ 2735255570Strasz return; 2736255570Strasz } 2737255570Strasz 2738255570Strasz cs = PDU_SESSION(request); 2739255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 2740255570Strasz 2741255570Strasz switch (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) { 2742255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 2743255570Strasz cfiscsi_scsi_command_done(io); 2744255570Strasz break; 2745255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 2746255570Strasz cfiscsi_task_management_done(io); 2747255570Strasz break; 2748255570Strasz default: 2749255570Strasz panic("cfiscsi_done called with wrong opcode 0x%x", 2750255570Strasz request->ip_bhs->bhs_opcode); 2751255570Strasz } 2752255570Strasz} 2753