ctl_frontend_iscsi.c revision 273310
1255570Strasz/*- 2255570Strasz * Copyright (c) 2012 The FreeBSD Foundation 3255570Strasz * All rights reserved. 4255570Strasz * 5255570Strasz * This software was developed by Edward Tomasz Napierala under sponsorship 6255570Strasz * from the FreeBSD Foundation. 7255570Strasz * 8255570Strasz * Redistribution and use in source and binary forms, with or without 9255570Strasz * modification, are permitted provided that the following conditions 10255570Strasz * are met: 11255570Strasz * 1. Redistributions of source code must retain the above copyright 12255570Strasz * notice, this list of conditions and the following disclaimer. 13255570Strasz * 2. Redistributions in binary form must reproduce the above copyright 14255570Strasz * notice, this list of conditions and the following disclaimer in the 15255570Strasz * documentation and/or other materials provided with the distribution. 16255570Strasz * 17255570Strasz * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18255570Strasz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19255570Strasz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20255570Strasz * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21255570Strasz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22255570Strasz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23255570Strasz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24255570Strasz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25255570Strasz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26255570Strasz * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27255570Strasz * SUCH DAMAGE. 28255570Strasz * 29255570Strasz * $FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_iscsi.c 273310 2014-10-20 07:32:33Z mav $ 30255570Strasz */ 31255570Strasz 32255570Strasz/* 33255570Strasz * CTL frontend for the iSCSI protocol. 34255570Strasz */ 35255570Strasz 36255570Strasz#include <sys/cdefs.h> 37255570Strasz__FBSDID("$FreeBSD: stable/10/sys/cam/ctl/ctl_frontend_iscsi.c 273310 2014-10-20 07:32:33Z mav $"); 38255570Strasz 39255570Strasz#include <sys/param.h> 40255570Strasz#include <sys/capability.h> 41255570Strasz#include <sys/condvar.h> 42255570Strasz#include <sys/file.h> 43255570Strasz#include <sys/kernel.h> 44255570Strasz#include <sys/kthread.h> 45255570Strasz#include <sys/lock.h> 46255570Strasz#include <sys/malloc.h> 47255570Strasz#include <sys/module.h> 48255570Strasz#include <sys/mutex.h> 49255570Strasz#include <sys/queue.h> 50255570Strasz#include <sys/sbuf.h> 51255570Strasz#include <sys/sysctl.h> 52255570Strasz#include <sys/systm.h> 53255570Strasz#include <sys/uio.h> 54255570Strasz#include <sys/unistd.h> 55255570Strasz#include <vm/uma.h> 56255570Strasz 57255570Strasz#include <cam/scsi/scsi_all.h> 58255570Strasz#include <cam/scsi/scsi_da.h> 59255570Strasz#include <cam/ctl/ctl_io.h> 60255570Strasz#include <cam/ctl/ctl.h> 61255570Strasz#include <cam/ctl/ctl_backend.h> 62256163Strasz#include <cam/ctl/ctl_error.h> 63255570Strasz#include <cam/ctl/ctl_frontend.h> 64255570Strasz#include <cam/ctl/ctl_frontend_internal.h> 65255570Strasz#include <cam/ctl/ctl_debug.h> 66255570Strasz#include <cam/ctl/ctl_ha.h> 67255570Strasz#include <cam/ctl/ctl_ioctl.h> 68255570Strasz#include <cam/ctl/ctl_private.h> 69255570Strasz 70255570Strasz#include <dev/iscsi/icl.h> 71255570Strasz#include <dev/iscsi/iscsi_proto.h> 72255570Strasz#include <cam/ctl/ctl_frontend_iscsi.h> 73255570Strasz 74255570Strasz#ifdef ICL_KERNEL_PROXY 75255570Strasz#include <sys/socketvar.h> 76255570Strasz#endif 77255570Strasz 78265508Strasz#ifdef ICL_KERNEL_PROXY 79265508StraszFEATURE(cfiscsi_kernel_proxy, "iSCSI target built with ICL_KERNEL_PROXY"); 80265508Strasz#endif 81265508Strasz 82255570Straszstatic MALLOC_DEFINE(M_CFISCSI, "cfiscsi", "Memory used for CTL iSCSI frontend"); 83255570Straszstatic uma_zone_t cfiscsi_data_wait_zone; 84255570Strasz 85255570StraszSYSCTL_NODE(_kern_cam_ctl, OID_AUTO, iscsi, CTLFLAG_RD, 0, 86255570Strasz "CAM Target Layer iSCSI Frontend"); 87255570Straszstatic int debug = 3; 88255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.debug", &debug); 89265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 90255570Strasz &debug, 1, "Enable debug messages"); 91255570Straszstatic int ping_timeout = 5; 92255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.ping_timeout", &ping_timeout); 93265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, 94255570Strasz &ping_timeout, 5, "Interval between ping (NOP-Out) requests, in seconds"); 95255570Straszstatic int login_timeout = 60; 96255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.login_timeout", &login_timeout); 97265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, 98255570Strasz &login_timeout, 60, "Time to wait for ctld(8) to finish Login Phase, in seconds"); 99255570Straszstatic int maxcmdsn_delta = 256; 100255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.maxcmdsn_delta", &maxcmdsn_delta); 101265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, maxcmdsn_delta, CTLFLAG_RWTUN, 102255570Strasz &maxcmdsn_delta, 256, "Number of commands the initiator can send " 103255570Strasz "without confirmation"); 104255570Strasz 105265505Strasz#define CFISCSI_DEBUG(X, ...) \ 106265505Strasz do { \ 107265505Strasz if (debug > 1) { \ 108265505Strasz printf("%s: " X "\n", \ 109265505Strasz __func__, ## __VA_ARGS__); \ 110265505Strasz } \ 111255570Strasz } while (0) 112255570Strasz 113265505Strasz#define CFISCSI_WARN(X, ...) \ 114265505Strasz do { \ 115265505Strasz if (debug > 0) { \ 116265505Strasz printf("WARNING: %s: " X "\n", \ 117265505Strasz __func__, ## __VA_ARGS__); \ 118265505Strasz } \ 119255570Strasz } while (0) 120255570Strasz 121265505Strasz#define CFISCSI_SESSION_DEBUG(S, X, ...) \ 122265505Strasz do { \ 123265505Strasz if (debug > 1) { \ 124265505Strasz printf("%s: %s (%s): " X "\n", \ 125265505Strasz __func__, S->cs_initiator_addr, \ 126265505Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 127265505Strasz } \ 128255570Strasz } while (0) 129255570Strasz 130265505Strasz#define CFISCSI_SESSION_WARN(S, X, ...) \ 131265505Strasz do { \ 132265505Strasz if (debug > 0) { \ 133265505Strasz printf("WARNING: %s (%s): " X "\n", \ 134265505Strasz S->cs_initiator_addr, \ 135265505Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 136265505Strasz } \ 137255570Strasz } while (0) 138255570Strasz 139255570Strasz#define CFISCSI_SESSION_LOCK(X) mtx_lock(&X->cs_lock) 140255570Strasz#define CFISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->cs_lock) 141255570Strasz#define CFISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->cs_lock, MA_OWNED) 142255570Strasz 143255570Strasz#define CONN_SESSION(X) ((struct cfiscsi_session *)(X)->ic_prv0) 144255570Strasz#define PDU_SESSION(X) CONN_SESSION((X)->ip_conn) 145255570Strasz#define PDU_EXPDATASN(X) (X)->ip_prv0 146255570Strasz#define PDU_TOTAL_TRANSFER_LEN(X) (X)->ip_prv1 147255570Strasz#define PDU_R2TSN(X) (X)->ip_prv2 148255570Strasz 149255570Straszint cfiscsi_init(void); 150255570Straszstatic void cfiscsi_online(void *arg); 151255570Straszstatic void cfiscsi_offline(void *arg); 152255570Straszstatic int cfiscsi_info(void *arg, struct sbuf *sb); 153255570Straszstatic int cfiscsi_lun_enable(void *arg, 154255570Strasz struct ctl_id target_id, int lun_id); 155255570Straszstatic int cfiscsi_lun_disable(void *arg, 156255570Strasz struct ctl_id target_id, int lun_id); 157255570Straszstatic uint32_t cfiscsi_lun_map(void *arg, uint32_t lun); 158255570Straszstatic int cfiscsi_ioctl(struct cdev *dev, 159255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td); 160255570Straszstatic void cfiscsi_datamove(union ctl_io *io); 161255570Straszstatic void cfiscsi_datamove_in(union ctl_io *io); 162255570Straszstatic void cfiscsi_datamove_out(union ctl_io *io); 163255570Straszstatic void cfiscsi_done(union ctl_io *io); 164255848Straszstatic bool cfiscsi_pdu_update_cmdsn(const struct icl_pdu *request); 165255570Straszstatic void cfiscsi_pdu_handle_nop_out(struct icl_pdu *request); 166255570Straszstatic void cfiscsi_pdu_handle_scsi_command(struct icl_pdu *request); 167255570Straszstatic void cfiscsi_pdu_handle_task_request(struct icl_pdu *request); 168255570Straszstatic void cfiscsi_pdu_handle_data_out(struct icl_pdu *request); 169255570Straszstatic void cfiscsi_pdu_handle_logout_request(struct icl_pdu *request); 170255570Straszstatic void cfiscsi_session_terminate(struct cfiscsi_session *cs); 171255570Straszstatic struct cfiscsi_target *cfiscsi_target_find(struct cfiscsi_softc 172255570Strasz *softc, const char *name); 173255570Straszstatic struct cfiscsi_target *cfiscsi_target_find_or_create( 174255570Strasz struct cfiscsi_softc *softc, const char *name, const char *alias); 175255570Straszstatic void cfiscsi_target_release(struct cfiscsi_target *ct); 176255570Straszstatic void cfiscsi_session_delete(struct cfiscsi_session *cs); 177255570Strasz 178255570Straszstatic struct cfiscsi_softc cfiscsi_softc; 179255570Straszextern struct ctl_softc *control_softc; 180255570Strasz 181255570Straszstatic struct ctl_frontend cfiscsi_frontend = 182255570Strasz{ 183255570Strasz .name = "iscsi", 184255570Strasz .init = cfiscsi_init, 185255570Strasz .ioctl = cfiscsi_ioctl, 186255570Strasz}; 187255570StraszCTL_FRONTEND_DECLARE(ctlcfiscsi, cfiscsi_frontend); 188255570StraszMODULE_DEPEND(ctlcfiscsi, icl, 1, 1, 1); 189255570Strasz 190255570Straszstatic struct icl_pdu * 191255570Straszcfiscsi_pdu_new_response(struct icl_pdu *request, int flags) 192255570Strasz{ 193255570Strasz 194255570Strasz return (icl_pdu_new_bhs(request->ip_conn, flags)); 195255570Strasz} 196255570Strasz 197255570Straszstatic bool 198255570Straszcfiscsi_pdu_update_cmdsn(const struct icl_pdu *request) 199255848Strasz{ 200255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 201255570Strasz struct cfiscsi_session *cs; 202255570Strasz uint32_t cmdsn, expstatsn; 203255570Strasz 204255570Strasz cs = PDU_SESSION(request); 205255570Strasz 206255570Strasz /* 207255570Strasz * Every incoming PDU - not just NOP-Out - resets the ping timer. 208255570Strasz * The purpose of the timeout is to reset the connection when it stalls; 209255570Strasz * we don't want this to happen when NOP-In or NOP-Out ends up delayed 210255570Strasz * in some queue. 211255570Strasz * 212255570Strasz * XXX: Locking? 213255570Strasz */ 214255570Strasz cs->cs_timeout = 0; 215255570Strasz 216255570Strasz /* 217255570Strasz * Data-Out PDUs don't contain CmdSN. 218255570Strasz */ 219255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 220255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 221255570Strasz return (false); 222255570Strasz 223255848Strasz /* 224255570Strasz * We're only using fields common for all the request 225255570Strasz * (initiator -> target) PDUs. 226255570Strasz */ 227255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 228255570Strasz cmdsn = ntohl(bhssc->bhssc_cmdsn); 229255570Strasz expstatsn = ntohl(bhssc->bhssc_expstatsn); 230255570Strasz 231255570Strasz CFISCSI_SESSION_LOCK(cs); 232255570Strasz#if 0 233255570Strasz if (expstatsn != cs->cs_statsn) { 234255570Strasz CFISCSI_SESSION_DEBUG(cs, "received PDU with ExpStatSN %d, " 235255570Strasz "while current StatSN is %d", expstatsn, 236255570Strasz cs->cs_statsn); 237255570Strasz } 238255570Strasz#endif 239255570Strasz 240255570Strasz /* 241255570Strasz * The target MUST silently ignore any non-immediate command outside 242255570Strasz * of this range. 243255848Strasz */ 244255848Strasz if (cmdsn < cs->cs_cmdsn || cmdsn > cs->cs_cmdsn + maxcmdsn_delta) { 245255570Strasz CFISCSI_SESSION_UNLOCK(cs); 246255848Strasz CFISCSI_SESSION_WARN(cs, "received PDU with CmdSN %d, " 247255848Strasz "while expected CmdSN was %d", cmdsn, cs->cs_cmdsn); 248255570Strasz return (true); 249255570Strasz } 250255848Strasz 251255570Strasz if ((request->ip_bhs->bhs_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 252255570Strasz cs->cs_cmdsn++; 253255570Strasz 254255570Strasz CFISCSI_SESSION_UNLOCK(cs); 255255570Strasz 256255570Strasz return (false); 257255848Strasz} 258255848Strasz 259255570Straszstatic void 260255570Straszcfiscsi_pdu_handle(struct icl_pdu *request) 261255570Strasz{ 262255570Strasz struct cfiscsi_session *cs; 263255570Strasz bool ignore; 264255570Strasz 265255848Strasz cs = PDU_SESSION(request); 266255570Strasz 267255570Strasz ignore = cfiscsi_pdu_update_cmdsn(request); 268255570Strasz if (ignore) { 269255848Strasz icl_pdu_free(request); 270255848Strasz return; 271255848Strasz } 272255848Strasz 273255848Strasz /* 274255570Strasz * Handle the PDU; this includes e.g. receiving the remaining 275255570Strasz * part of PDU and submitting the SCSI command to CTL 276255570Strasz * or queueing a reply. The handling routine is responsible 277255570Strasz * for freeing the PDU when it's no longer needed. 278255570Strasz */ 279255570Strasz switch (request->ip_bhs->bhs_opcode & 280255570Strasz ~ISCSI_BHS_OPCODE_IMMEDIATE) { 281255570Strasz case ISCSI_BHS_OPCODE_NOP_OUT: 282255570Strasz cfiscsi_pdu_handle_nop_out(request); 283255570Strasz break; 284255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 285255570Strasz cfiscsi_pdu_handle_scsi_command(request); 286255570Strasz break; 287255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 288255570Strasz cfiscsi_pdu_handle_task_request(request); 289255570Strasz break; 290255570Strasz case ISCSI_BHS_OPCODE_SCSI_DATA_OUT: 291255570Strasz cfiscsi_pdu_handle_data_out(request); 292255570Strasz break; 293255570Strasz case ISCSI_BHS_OPCODE_LOGOUT_REQUEST: 294255570Strasz cfiscsi_pdu_handle_logout_request(request); 295255570Strasz break; 296255570Strasz default: 297255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with unsupported " 298255570Strasz "opcode 0x%x; dropping connection", 299255570Strasz request->ip_bhs->bhs_opcode); 300255570Strasz icl_pdu_free(request); 301255570Strasz cfiscsi_session_terminate(cs); 302256197Strasz } 303255570Strasz 304255570Strasz} 305255570Strasz 306255570Straszstatic void 307255570Straszcfiscsi_receive_callback(struct icl_pdu *request) 308255570Strasz{ 309255570Strasz struct cfiscsi_session *cs; 310255570Strasz 311255570Strasz cs = PDU_SESSION(request); 312255570Strasz 313255570Strasz#ifdef ICL_KERNEL_PROXY 314255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 315255570Strasz if (cs->cs_login_pdu == NULL) 316255570Strasz cs->cs_login_pdu = request; 317255570Strasz else 318255570Strasz icl_pdu_free(request); 319255570Strasz cv_signal(&cs->cs_login_cv); 320255570Strasz return; 321255570Strasz } 322255570Strasz#endif 323255570Strasz 324255570Strasz cfiscsi_pdu_handle(request); 325255570Strasz} 326255570Strasz 327255570Straszstatic void 328255570Straszcfiscsi_error_callback(struct icl_conn *ic) 329255570Strasz{ 330255570Strasz struct cfiscsi_session *cs; 331255570Strasz 332255570Strasz cs = CONN_SESSION(ic); 333255570Strasz 334255570Strasz CFISCSI_SESSION_WARN(cs, "connection error; dropping connection"); 335255570Strasz cfiscsi_session_terminate(cs); 336255570Strasz} 337255570Strasz 338255570Straszstatic int 339255570Straszcfiscsi_pdu_prepare(struct icl_pdu *response) 340255570Strasz{ 341255570Strasz struct cfiscsi_session *cs; 342255570Strasz struct iscsi_bhs_scsi_response *bhssr; 343255570Strasz bool advance_statsn = true; 344255570Strasz 345255570Strasz cs = PDU_SESSION(response); 346255570Strasz 347255570Strasz CFISCSI_SESSION_LOCK_ASSERT(cs); 348255570Strasz 349255570Strasz /* 350255570Strasz * We're only using fields common for all the response 351255570Strasz * (target -> initiator) PDUs. 352255570Strasz */ 353255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 354255570Strasz 355255570Strasz /* 356255570Strasz * 10.8.3: "The StatSN for this connection is not advanced 357255570Strasz * after this PDU is sent." 358255570Strasz */ 359255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_R2T) 360255570Strasz advance_statsn = false; 361255570Strasz 362255570Strasz /* 363255570Strasz * 10.19.2: "However, when the Initiator Task Tag is set to 0xffffffff, 364255570Strasz * StatSN for the connection is not advanced after this PDU is sent." 365255570Strasz */ 366255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_NOP_IN && 367255570Strasz bhssr->bhssr_initiator_task_tag == 0xffffffff) 368255570Strasz advance_statsn = false; 369255570Strasz 370255570Strasz /* 371255570Strasz * See the comment below - StatSN is not meaningful and must 372255570Strasz * not be advanced. 373255570Strasz */ 374255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_SCSI_DATA_IN) 375255570Strasz advance_statsn = false; 376255570Strasz 377255570Strasz /* 378255570Strasz * 10.7.3: "The fields StatSN, Status, and Residual Count 379255570Strasz * only have meaningful content if the S bit is set to 1." 380255570Strasz */ 381255570Strasz if (bhssr->bhssr_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN) 382255570Strasz bhssr->bhssr_statsn = htonl(cs->cs_statsn); 383255570Strasz bhssr->bhssr_expcmdsn = htonl(cs->cs_cmdsn); 384255570Strasz bhssr->bhssr_maxcmdsn = htonl(cs->cs_cmdsn + maxcmdsn_delta); 385255570Strasz 386255570Strasz if (advance_statsn) 387255570Strasz cs->cs_statsn++; 388255570Strasz 389255570Strasz return (0); 390255570Strasz} 391255570Strasz 392255570Straszstatic void 393255570Straszcfiscsi_pdu_queue(struct icl_pdu *response) 394255570Strasz{ 395255570Strasz struct cfiscsi_session *cs; 396255570Strasz 397255570Strasz cs = PDU_SESSION(response); 398255570Strasz 399255570Strasz CFISCSI_SESSION_LOCK(cs); 400255570Strasz cfiscsi_pdu_prepare(response); 401255570Strasz icl_pdu_queue(response); 402255570Strasz CFISCSI_SESSION_UNLOCK(cs); 403255570Strasz} 404255570Strasz 405255570Straszstatic uint32_t 406255570Straszcfiscsi_decode_lun(uint64_t encoded) 407255570Strasz{ 408255570Strasz uint8_t lun[8]; 409255570Strasz uint32_t result; 410255570Strasz 411255570Strasz /* 412255570Strasz * The LUN field in iSCSI PDUs may look like an ordinary 64 bit number, 413255570Strasz * but is in fact an evil, multidimensional structure defined 414255570Strasz * in SCSI Architecture Model 5 (SAM-5), section 4.6. 415255570Strasz */ 416255570Strasz memcpy(lun, &encoded, sizeof(lun)); 417255570Strasz switch (lun[0] & 0xC0) { 418255570Strasz case 0x00: 419255570Strasz if ((lun[0] & 0x3f) != 0 || lun[2] != 0 || lun[3] != 0 || 420255570Strasz lun[4] != 0 || lun[5] != 0 || lun[6] != 0 || lun[7] != 0) { 421255570Strasz CFISCSI_WARN("malformed LUN " 422255570Strasz "(peripheral device addressing method): 0x%jx", 423255570Strasz (uintmax_t)encoded); 424255570Strasz result = 0xffffffff; 425255570Strasz break; 426255570Strasz } 427255570Strasz result = lun[1]; 428255570Strasz break; 429255570Strasz case 0x40: 430255570Strasz if (lun[2] != 0 || lun[3] != 0 || lun[4] != 0 || lun[5] != 0 || 431255570Strasz lun[6] != 0 || lun[7] != 0) { 432255570Strasz CFISCSI_WARN("malformed LUN " 433255570Strasz "(flat address space addressing method): 0x%jx", 434255570Strasz (uintmax_t)encoded); 435255570Strasz result = 0xffffffff; 436255570Strasz break; 437255570Strasz } 438255570Strasz result = ((lun[0] & 0x3f) << 8) + lun[1]; 439255570Strasz break; 440255570Strasz case 0xC0: 441255570Strasz if (lun[0] != 0xD2 || lun[4] != 0 || lun[5] != 0 || 442255570Strasz lun[6] != 0 || lun[7] != 0) { 443255570Strasz CFISCSI_WARN("malformed LUN (extended flat " 444255570Strasz "address space addressing method): 0x%jx", 445255570Strasz (uintmax_t)encoded); 446255570Strasz result = 0xffffffff; 447255570Strasz break; 448255570Strasz } 449255570Strasz result = (lun[1] << 16) + (lun[2] << 8) + lun[3]; 450255570Strasz default: 451255570Strasz CFISCSI_WARN("unsupported LUN format 0x%jx", 452255570Strasz (uintmax_t)encoded); 453255570Strasz result = 0xffffffff; 454255570Strasz break; 455255570Strasz } 456255570Strasz 457255570Strasz return (result); 458255570Strasz} 459255570Strasz 460255570Straszstatic void 461255570Straszcfiscsi_pdu_handle_nop_out(struct icl_pdu *request) 462255570Strasz{ 463255570Strasz struct cfiscsi_session *cs; 464255570Strasz struct iscsi_bhs_nop_out *bhsno; 465255570Strasz struct iscsi_bhs_nop_in *bhsni; 466255570Strasz struct icl_pdu *response; 467255570Strasz void *data = NULL; 468255570Strasz size_t datasize; 469256187Strasz int error; 470256187Strasz 471256187Strasz cs = PDU_SESSION(request); 472255570Strasz bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 473255570Strasz 474255570Strasz if (bhsno->bhsno_initiator_task_tag == 0xffffffff) { 475255570Strasz /* 476255570Strasz * Nothing to do, iscsi_pdu_update_statsn() already 477255570Strasz * zeroed the timeout. 478255570Strasz */ 479255570Strasz icl_pdu_free(request); 480255570Strasz return; 481255570Strasz } 482255570Strasz 483255570Strasz datasize = icl_pdu_data_segment_length(request); 484255570Strasz if (datasize > 0) { 485256187Strasz data = malloc(datasize, M_CFISCSI, M_NOWAIT | M_ZERO); 486256187Strasz if (data == NULL) { 487256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 488256187Strasz "dropping connection"); 489256187Strasz icl_pdu_free(request); 490256187Strasz cfiscsi_session_terminate(cs); 491256187Strasz return; 492256187Strasz } 493256187Strasz icl_pdu_get_data(request, 0, data, datasize); 494256187Strasz } 495256187Strasz 496256187Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 497256187Strasz if (response == NULL) { 498255570Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 499255570Strasz "droppping connection"); 500256187Strasz free(data, M_CFISCSI); 501256187Strasz icl_pdu_free(request); 502256187Strasz cfiscsi_session_terminate(cs); 503255570Strasz return; 504256187Strasz } 505255570Strasz bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 506255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 507255570Strasz bhsni->bhsni_flags = 0x80; 508255570Strasz bhsni->bhsni_initiator_task_tag = bhsno->bhsno_initiator_task_tag; 509255570Strasz bhsni->bhsni_target_transfer_tag = 0xffffffff; 510255570Strasz if (datasize > 0) { 511255570Strasz error = icl_pdu_append_data(response, data, datasize, M_NOWAIT); 512256187Strasz if (error != 0) { 513256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 514256187Strasz "dropping connection"); 515256187Strasz free(data, M_CFISCSI); 516256187Strasz icl_pdu_free(request); 517256187Strasz icl_pdu_free(response); 518256187Strasz cfiscsi_session_terminate(cs); 519256187Strasz return; 520256187Strasz } 521256187Strasz free(data, M_CFISCSI); 522256187Strasz } 523256187Strasz 524256187Strasz icl_pdu_free(request); 525255570Strasz cfiscsi_pdu_queue(response); 526255570Strasz} 527255570Strasz 528255570Straszstatic void 529255570Straszcfiscsi_pdu_handle_scsi_command(struct icl_pdu *request) 530255570Strasz{ 531255570Strasz struct iscsi_bhs_scsi_command *bhssc; 532255570Strasz struct cfiscsi_session *cs; 533255570Strasz union ctl_io *io; 534255570Strasz int error; 535255570Strasz 536255570Strasz cs = PDU_SESSION(request); 537255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 538255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 539255570Strasz // bhssc->bhssc_initiator_task_tag); 540255570Strasz 541255570Strasz if (request->ip_data_len > 0 && cs->cs_immediate_data == false) { 542255570Strasz CFISCSI_SESSION_WARN(cs, "unsolicited data with " 543255570Strasz "ImmediateData=No; dropping connection"); 544255570Strasz icl_pdu_free(request); 545255570Strasz cfiscsi_session_terminate(cs); 546256197Strasz return; 547255570Strasz } 548255570Strasz io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 549255570Strasz if (io == NULL) { 550255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io; " 551255570Strasz "dropping connection"); 552256197Strasz icl_pdu_free(request); 553256197Strasz cfiscsi_session_terminate(cs); 554255570Strasz return; 555256197Strasz } 556255570Strasz ctl_zero_io(io); 557255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 558255570Strasz io->io_hdr.io_type = CTL_IO_SCSI; 559255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 560255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 561255570Strasz io->io_hdr.nexus.targ_target.id = 0; 562255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhssc->bhssc_lun); 563255570Strasz io->scsiio.tag_num = bhssc->bhssc_initiator_task_tag; 564255570Strasz switch ((bhssc->bhssc_flags & BHSSC_FLAGS_ATTR)) { 565255570Strasz case BHSSC_FLAGS_ATTR_UNTAGGED: 566255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 567255570Strasz break; 568255570Strasz case BHSSC_FLAGS_ATTR_SIMPLE: 569255570Strasz io->scsiio.tag_type = CTL_TAG_SIMPLE; 570255570Strasz break; 571255570Strasz case BHSSC_FLAGS_ATTR_ORDERED: 572255570Strasz io->scsiio.tag_type = CTL_TAG_ORDERED; 573255570Strasz break; 574255570Strasz case BHSSC_FLAGS_ATTR_HOQ: 575255570Strasz io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 576255570Strasz break; 577255570Strasz case BHSSC_FLAGS_ATTR_ACA: 578255570Strasz io->scsiio.tag_type = CTL_TAG_ACA; 579255570Strasz break; 580255570Strasz default: 581255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 582255570Strasz CFISCSI_SESSION_WARN(cs, "unhandled tag type %d", 583255570Strasz bhssc->bhssc_flags & BHSSC_FLAGS_ATTR); 584255570Strasz break; 585255570Strasz } 586255570Strasz io->scsiio.cdb_len = sizeof(bhssc->bhssc_cdb); /* Which is 16. */ 587255570Strasz memcpy(io->scsiio.cdb, bhssc->bhssc_cdb, sizeof(bhssc->bhssc_cdb)); 588255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 589255570Strasz error = ctl_queue(io); 590255570Strasz if (error != CTL_RETVAL_COMPLETE) { 591255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 592255570Strasz "dropping connection", error); 593255570Strasz ctl_free_io(io); 594255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 595256197Strasz icl_pdu_free(request); 596256197Strasz cfiscsi_session_terminate(cs); 597255570Strasz } 598255570Strasz} 599255570Strasz 600256197Straszstatic void 601255570Straszcfiscsi_pdu_handle_task_request(struct icl_pdu *request) 602255570Strasz{ 603255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 604255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 605255570Strasz struct icl_pdu *response; 606255570Strasz struct cfiscsi_session *cs; 607255570Strasz union ctl_io *io; 608255570Strasz int error; 609255570Strasz 610255570Strasz cs = PDU_SESSION(request); 611255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 612255570Strasz io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 613255570Strasz if (io == NULL) { 614255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io;" 615255570Strasz "dropping connection"); 616255570Strasz icl_pdu_free(request); 617255570Strasz cfiscsi_session_terminate(cs); 618256197Strasz return; 619256197Strasz } 620255570Strasz ctl_zero_io(io); 621256197Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 622255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 623255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 624255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 625255570Strasz io->io_hdr.nexus.targ_target.id = 0; 626255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhstmr->bhstmr_lun); 627255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 628255570Strasz 629255570Strasz switch (bhstmr->bhstmr_function & ~0x80) { 630255570Strasz case BHSTMR_FUNCTION_ABORT_TASK: 631255570Strasz#if 0 632255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK"); 633255570Strasz#endif 634255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 635255570Strasz io->taskio.tag_num = bhstmr->bhstmr_referenced_task_tag; 636255570Strasz break; 637255570Strasz case BHSTMR_FUNCTION_ABORT_TASK_SET: 638255570Strasz#if 0 639255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK_SET"); 640255570Strasz#endif 641255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK_SET; 642255570Strasz break; 643255570Strasz case BHSTMR_FUNCTION_LOGICAL_UNIT_RESET: 644255570Strasz#if 0 645255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_LOGICAL_UNIT_RESET"); 646255570Strasz#endif 647255570Strasz io->taskio.task_action = CTL_TASK_LUN_RESET; 648255570Strasz break; 649264602Strasz case BHSTMR_FUNCTION_TARGET_WARM_RESET: 650255570Strasz#if 0 651264602Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_TARGET_WARM_RESET"); 652255570Strasz#endif 653264602Strasz io->taskio.task_action = CTL_TASK_TARGET_RESET; 654255570Strasz break; 655255570Strasz default: 656255570Strasz CFISCSI_SESSION_DEBUG(cs, "unsupported function 0x%x", 657255570Strasz bhstmr->bhstmr_function & ~0x80); 658255570Strasz ctl_free_io(io); 659255570Strasz 660255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 661255570Strasz if (response == NULL) { 662256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 663256197Strasz "dropping connection"); 664255570Strasz icl_pdu_free(request); 665256197Strasz cfiscsi_session_terminate(cs); 666255570Strasz return; 667255570Strasz } 668255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 669255570Strasz response->ip_bhs; 670255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 671255570Strasz bhstmr2->bhstmr_flags = 0x80; 672255570Strasz bhstmr2->bhstmr_response = 673255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 674255570Strasz bhstmr2->bhstmr_initiator_task_tag = 675255570Strasz bhstmr->bhstmr_initiator_task_tag; 676255570Strasz icl_pdu_free(request); 677255570Strasz cfiscsi_pdu_queue(response); 678255570Strasz return; 679255570Strasz } 680255570Strasz 681255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 682255570Strasz error = ctl_queue(io); 683255570Strasz if (error != CTL_RETVAL_COMPLETE) { 684256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 685256197Strasz "dropping connection", error); 686255570Strasz ctl_free_io(io); 687255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 688255570Strasz icl_pdu_free(request); 689256197Strasz cfiscsi_session_terminate(cs); 690255570Strasz } 691255570Strasz} 692255570Strasz 693255570Straszstatic bool 694255570Straszcfiscsi_handle_data_segment(struct icl_pdu *request, struct cfiscsi_data_wait *cdw) 695255570Strasz{ 696255570Strasz struct iscsi_bhs_data_out *bhsdo; 697255570Strasz struct cfiscsi_session *cs; 698255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 699256195Strasz size_t copy_len, len, off, buffer_offset; 700255570Strasz int ctl_sg_count; 701255570Strasz union ctl_io *io; 702255570Strasz 703255570Strasz cs = PDU_SESSION(request); 704255570Strasz 705255570Strasz KASSERT((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 706255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT || 707255570Strasz (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 708255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 709255570Strasz ("bad opcode 0x%x", request->ip_bhs->bhs_opcode)); 710255570Strasz 711255570Strasz /* 712265640Smav * We're only using fields common for Data-Out and SCSI Command PDUs. 713255570Strasz */ 714255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 715255570Strasz 716255570Strasz io = cdw->cdw_ctl_io; 717255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 718255570Strasz ("CTL_FLAG_DATA_IN")); 719255570Strasz 720255570Strasz#if 0 721255570Strasz CFISCSI_SESSION_DEBUG(cs, "received %zd bytes out of %d", 722255570Strasz request->ip_data_len, io->scsiio.kern_total_len); 723255570Strasz#endif 724255570Strasz 725255570Strasz if (io->scsiio.kern_sg_entries > 0) { 726255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 727255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 728255570Strasz } else { 729255570Strasz ctl_sglist = &ctl_sg_entry; 730255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 731255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 732255570Strasz ctl_sg_count = 1; 733255570Strasz } 734255570Strasz 735255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 736255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 737255570Strasz buffer_offset = ntohl(bhsdo->bhsdo_buffer_offset); 738255570Strasz else 739255570Strasz buffer_offset = 0; 740268141Smav len = icl_pdu_data_segment_length(request); 741255570Strasz 742255570Strasz /* 743255570Strasz * Make sure the offset, as sent by the initiator, matches the offset 744255570Strasz * we're supposed to be at in the scatter-gather list. 745255570Strasz */ 746268141Smav if (buffer_offset > 747268141Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled || 748268141Smav buffer_offset + len <= 749265640Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled) { 750255570Strasz CFISCSI_SESSION_WARN(cs, "received bad buffer offset %zd, " 751265640Smav "expected %zd; dropping connection", buffer_offset, 752265640Smav (size_t)io->scsiio.kern_rel_offset + 753255570Strasz (size_t)io->scsiio.ext_data_filled); 754265640Smav ctl_set_data_phase_error(&io->scsiio); 755255570Strasz cfiscsi_session_terminate(cs); 756255570Strasz return (true); 757255570Strasz } 758255570Strasz 759256195Strasz /* 760256195Strasz * This is the offset within the PDU data segment, as opposed 761256195Strasz * to buffer_offset, which is the offset within the task (SCSI 762256195Strasz * command). 763256195Strasz */ 764268141Smav off = io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled - 765268141Smav buffer_offset; 766256195Strasz 767256195Strasz /* 768256195Strasz * Iterate over the scatter/gather segments, filling them with data 769256195Strasz * from the PDU data segment. Note that this can get called multiple 770256195Strasz * times for one SCSI command; the cdw structure holds state for the 771256195Strasz * scatter/gather list. 772256195Strasz */ 773255570Strasz for (;;) { 774255570Strasz KASSERT(cdw->cdw_sg_index < ctl_sg_count, 775255570Strasz ("cdw->cdw_sg_index >= ctl_sg_count")); 776255570Strasz if (cdw->cdw_sg_len == 0) { 777255570Strasz cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 778255570Strasz cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 779255570Strasz } 780256195Strasz KASSERT(off <= len, ("len > off")); 781256195Strasz copy_len = len - off; 782255570Strasz if (copy_len > cdw->cdw_sg_len) 783255570Strasz copy_len = cdw->cdw_sg_len; 784255570Strasz 785255570Strasz icl_pdu_get_data(request, off, cdw->cdw_sg_addr, copy_len); 786255570Strasz cdw->cdw_sg_addr += copy_len; 787255570Strasz cdw->cdw_sg_len -= copy_len; 788255570Strasz off += copy_len; 789255570Strasz io->scsiio.ext_data_filled += copy_len; 790255570Strasz 791255570Strasz if (cdw->cdw_sg_len == 0) { 792256195Strasz /* 793256195Strasz * End of current segment. 794256195Strasz */ 795256195Strasz if (cdw->cdw_sg_index == ctl_sg_count - 1) { 796256195Strasz /* 797256195Strasz * Last segment in scatter/gather list. 798256195Strasz */ 799255570Strasz break; 800256195Strasz } 801255570Strasz cdw->cdw_sg_index++; 802255570Strasz } 803256195Strasz 804256195Strasz if (off == len) { 805256195Strasz /* 806256195Strasz * End of PDU payload. 807256195Strasz */ 808255570Strasz break; 809256195Strasz } 810255570Strasz } 811255570Strasz 812256195Strasz if (len > off) { 813265640Smav /* 814265640Smav * In case of unsolicited data, it's possible that the buffer 815265640Smav * provided by CTL is smaller than negotiated FirstBurstLength. 816265640Smav * Just ignore the superfluous data; will ask for them with R2T 817265640Smav * on next call to cfiscsi_datamove(). 818265640Smav * 819265640Smav * This obviously can only happen with SCSI Command PDU. 820265640Smav */ 821265640Smav if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 822268141Smav ISCSI_BHS_OPCODE_SCSI_COMMAND) 823265640Smav return (true); 824265640Smav 825255570Strasz CFISCSI_SESSION_WARN(cs, "received too much data: got %zd bytes, " 826265640Smav "expected %zd; dropping connection", 827265640Smav icl_pdu_data_segment_length(request), off); 828265640Smav ctl_set_data_phase_error(&io->scsiio); 829255570Strasz cfiscsi_session_terminate(cs); 830255570Strasz return (true); 831255570Strasz } 832255570Strasz 833265640Smav if (io->scsiio.ext_data_filled == cdw->cdw_r2t_end && 834265640Smav (bhsdo->bhsdo_flags & BHSDO_FLAGS_F) == 0) { 835265640Smav CFISCSI_SESSION_WARN(cs, "got the final packet without " 836265640Smav "the F flag; flags = 0x%x; dropping connection", 837265640Smav bhsdo->bhsdo_flags); 838265640Smav ctl_set_data_phase_error(&io->scsiio); 839265640Smav cfiscsi_session_terminate(cs); 840265640Smav return (true); 841265640Smav } 842265640Smav 843265640Smav if (io->scsiio.ext_data_filled != cdw->cdw_r2t_end && 844265640Smav (bhsdo->bhsdo_flags & BHSDO_FLAGS_F) != 0) { 845265640Smav if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 846265640Smav ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 847265640Smav CFISCSI_SESSION_WARN(cs, "got the final packet, but the " 848265640Smav "transmitted size was %zd bytes instead of %d; " 849265640Smav "dropping connection", 850265640Smav (size_t)io->scsiio.ext_data_filled, 851265640Smav cdw->cdw_r2t_end); 852265640Smav ctl_set_data_phase_error(&io->scsiio); 853255570Strasz cfiscsi_session_terminate(cs); 854255570Strasz return (true); 855265640Smav } else { 856265640Smav /* 857265640Smav * For SCSI Command PDU, this just means we need to 858265640Smav * solicit more data by sending R2T. 859265640Smav */ 860265640Smav return (false); 861255570Strasz } 862265640Smav } 863255570Strasz 864265640Smav if (io->scsiio.ext_data_filled == cdw->cdw_r2t_end) { 865255570Strasz#if 0 866255570Strasz CFISCSI_SESSION_DEBUG(cs, "no longer expecting Data-Out with target " 867255570Strasz "transfer tag 0x%x", cdw->cdw_target_transfer_tag); 868255570Strasz#endif 869255570Strasz 870255570Strasz return (true); 871255570Strasz } 872255570Strasz 873255570Strasz return (false); 874255570Strasz} 875255570Strasz 876255570Straszstatic void 877255570Straszcfiscsi_pdu_handle_data_out(struct icl_pdu *request) 878255570Strasz{ 879255570Strasz struct iscsi_bhs_data_out *bhsdo; 880255570Strasz struct cfiscsi_session *cs; 881255570Strasz struct cfiscsi_data_wait *cdw = NULL; 882255570Strasz union ctl_io *io; 883255570Strasz bool done; 884255570Strasz 885255570Strasz cs = PDU_SESSION(request); 886255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 887255570Strasz 888255570Strasz CFISCSI_SESSION_LOCK(cs); 889255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) { 890255570Strasz#if 0 891255570Strasz CFISCSI_SESSION_DEBUG(cs, "have ttt 0x%x, itt 0x%x; looking for " 892255570Strasz "ttt 0x%x, itt 0x%x", 893255570Strasz bhsdo->bhsdo_target_transfer_tag, 894255570Strasz bhsdo->bhsdo_initiator_task_tag, 895255570Strasz cdw->cdw_target_transfer_tag, cdw->cdw_initiator_task_tag)); 896255570Strasz#endif 897255570Strasz if (bhsdo->bhsdo_target_transfer_tag == 898255570Strasz cdw->cdw_target_transfer_tag) 899255570Strasz break; 900255570Strasz } 901255570Strasz CFISCSI_SESSION_UNLOCK(cs); 902255570Strasz if (cdw == NULL) { 903255570Strasz CFISCSI_SESSION_WARN(cs, "data transfer tag 0x%x, initiator task tag " 904256197Strasz "0x%x, not found; dropping connection", 905256197Strasz bhsdo->bhsdo_target_transfer_tag, bhsdo->bhsdo_initiator_task_tag); 906255570Strasz icl_pdu_free(request); 907255570Strasz cfiscsi_session_terminate(cs); 908255570Strasz return; 909255570Strasz } 910255570Strasz 911255570Strasz io = cdw->cdw_ctl_io; 912255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 913255570Strasz ("CTL_FLAG_DATA_IN")); 914255570Strasz 915255570Strasz done = cfiscsi_handle_data_segment(request, cdw); 916255570Strasz if (done) { 917255570Strasz CFISCSI_SESSION_LOCK(cs); 918255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 919255570Strasz CFISCSI_SESSION_UNLOCK(cs); 920255570Strasz done = (io->scsiio.ext_data_filled != cdw->cdw_r2t_end || 921255570Strasz io->scsiio.ext_data_filled == io->scsiio.kern_data_len); 922255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 923255570Strasz if (done) 924255570Strasz io->scsiio.be_move_done(io); 925255570Strasz else 926255570Strasz cfiscsi_datamove_out(io); 927255570Strasz } 928255570Strasz 929255570Strasz icl_pdu_free(request); 930255570Strasz} 931255570Strasz 932255570Straszstatic void 933255570Straszcfiscsi_pdu_handle_logout_request(struct icl_pdu *request) 934255570Strasz{ 935255570Strasz struct iscsi_bhs_logout_request *bhslr; 936255570Strasz struct iscsi_bhs_logout_response *bhslr2; 937255570Strasz struct icl_pdu *response; 938255570Strasz struct cfiscsi_session *cs; 939255570Strasz 940255570Strasz cs = PDU_SESSION(request); 941255570Strasz bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 942256197Strasz switch (bhslr->bhslr_reason & 0x7f) { 943255570Strasz case BHSLR_REASON_CLOSE_SESSION: 944255570Strasz case BHSLR_REASON_CLOSE_CONNECTION: 945255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 946255570Strasz if (response == NULL) { 947255570Strasz CFISCSI_SESSION_DEBUG(cs, "failed to allocate memory"); 948255570Strasz icl_pdu_free(request); 949255570Strasz cfiscsi_session_terminate(cs); 950255570Strasz return; 951255570Strasz } 952255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 953255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 954255570Strasz bhslr2->bhslr_flags = 0x80; 955255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_CLOSED_SUCCESSFULLY; 956255570Strasz bhslr2->bhslr_initiator_task_tag = 957255570Strasz bhslr->bhslr_initiator_task_tag; 958255570Strasz icl_pdu_free(request); 959255570Strasz cfiscsi_pdu_queue(response); 960256197Strasz cfiscsi_session_terminate(cs); 961256197Strasz break; 962255570Strasz case BHSLR_REASON_REMOVE_FOR_RECOVERY: 963255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 964255570Strasz if (response == NULL) { 965255570Strasz CFISCSI_SESSION_WARN(cs, 966255570Strasz "failed to allocate memory; dropping connection"); 967255570Strasz icl_pdu_free(request); 968255570Strasz cfiscsi_session_terminate(cs); 969255570Strasz return; 970255570Strasz } 971255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 972255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 973255570Strasz bhslr2->bhslr_flags = 0x80; 974255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_RECOVERY_NOT_SUPPORTED; 975255570Strasz bhslr2->bhslr_initiator_task_tag = 976255570Strasz bhslr->bhslr_initiator_task_tag; 977255570Strasz icl_pdu_free(request); 978255570Strasz cfiscsi_pdu_queue(response); 979255570Strasz break; 980255570Strasz default: 981255570Strasz CFISCSI_SESSION_WARN(cs, "invalid reason 0%x; dropping connection", 982255570Strasz bhslr->bhslr_reason); 983255570Strasz icl_pdu_free(request); 984255570Strasz cfiscsi_session_terminate(cs); 985255570Strasz break; 986255570Strasz } 987255570Strasz} 988255570Strasz 989255570Straszstatic void 990255570Straszcfiscsi_callout(void *context) 991255570Strasz{ 992255570Strasz struct icl_pdu *cp; 993255570Strasz struct iscsi_bhs_nop_in *bhsni; 994255570Strasz struct cfiscsi_session *cs; 995255570Strasz 996255570Strasz cs = context; 997255570Strasz 998265497Strasz if (cs->cs_terminating) 999255570Strasz return; 1000255570Strasz 1001255570Strasz callout_schedule(&cs->cs_callout, 1 * hz); 1002255570Strasz 1003255570Strasz atomic_add_int(&cs->cs_timeout, 1); 1004255570Strasz 1005255570Strasz#ifdef ICL_KERNEL_PROXY 1006255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 1007255570Strasz if (login_timeout > 0 && cs->cs_timeout > login_timeout) { 1008255570Strasz CFISCSI_SESSION_WARN(cs, "login timed out after " 1009255570Strasz "%d seconds; dropping connection", cs->cs_timeout); 1010255570Strasz cfiscsi_session_terminate(cs); 1011255570Strasz } 1012255570Strasz return; 1013255570Strasz } 1014255570Strasz#endif 1015255570Strasz 1016255570Strasz if (ping_timeout <= 0) { 1017255570Strasz /* 1018255570Strasz * Pings are disabled. Don't send NOP-In in this case; 1019255570Strasz * user might have disabled pings to work around problems 1020255570Strasz * with certain initiators that can't properly handle 1021255570Strasz * NOP-In, such as iPXE. Reset the timeout, to avoid 1022255570Strasz * triggering reconnection, should the user decide to 1023255570Strasz * reenable them. 1024255570Strasz */ 1025255570Strasz cs->cs_timeout = 0; 1026255570Strasz return; 1027255570Strasz } 1028255570Strasz 1029255824Strasz if (cs->cs_timeout >= ping_timeout) { 1030255824Strasz CFISCSI_SESSION_WARN(cs, "no ping reply (NOP-Out) after %d seconds; " 1031256197Strasz "dropping connection", ping_timeout); 1032255824Strasz cfiscsi_session_terminate(cs); 1033255824Strasz return; 1034255570Strasz } 1035255570Strasz 1036255570Strasz /* 1037255570Strasz * If the ping was reset less than one second ago - which means 1038255570Strasz * that we've received some PDU during the last second - assume 1039255570Strasz * the traffic flows correctly and don't bother sending a NOP-Out. 1040255570Strasz * 1041255570Strasz * (It's 2 - one for one second, and one for incrementing is_timeout 1042255570Strasz * earlier in this routine.) 1043255570Strasz */ 1044255570Strasz if (cs->cs_timeout < 2) 1045255570Strasz return; 1046255570Strasz 1047268259Smav cp = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1048255570Strasz if (cp == NULL) { 1049255570Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory"); 1050255570Strasz return; 1051255570Strasz } 1052255570Strasz bhsni = (struct iscsi_bhs_nop_in *)cp->ip_bhs; 1053255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 1054255570Strasz bhsni->bhsni_flags = 0x80; 1055255570Strasz bhsni->bhsni_initiator_task_tag = 0xffffffff; 1056255570Strasz 1057255570Strasz cfiscsi_pdu_queue(cp); 1058255570Strasz} 1059255570Strasz 1060255570Straszstatic void 1061255570Straszcfiscsi_session_terminate_tasks(struct cfiscsi_session *cs) 1062255570Strasz{ 1063255570Strasz struct cfiscsi_data_wait *cdw; 1064255570Strasz union ctl_io *io; 1065255570Strasz int error, last; 1066255570Strasz 1067255570Strasz io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 1068255570Strasz if (io == NULL) { 1069255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 1070255570Strasz return; 1071255570Strasz } 1072255570Strasz ctl_zero_io(io); 1073255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = cs; 1074255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1075255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1076255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 1077255570Strasz io->io_hdr.nexus.targ_target.id = 0; 1078255570Strasz io->io_hdr.nexus.targ_lun = 0; 1079255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1080255570Strasz io->taskio.task_action = CTL_TASK_I_T_NEXUS_RESET; 1081255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1082255570Strasz error = ctl_queue(io); 1083255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1084255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1085255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 1086255570Strasz ctl_free_io(io); 1087255570Strasz } 1088255570Strasz 1089255570Strasz CFISCSI_SESSION_LOCK(cs); 1090255570Strasz while ((cdw = TAILQ_FIRST(&cs->cs_waiting_for_data_out)) != NULL) { 1091255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 1092255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1093255570Strasz /* 1094255570Strasz * Set nonzero port status; this prevents backends from 1095255570Strasz * assuming that the data transfer actually succeeded 1096255570Strasz * and writing uninitialized data to disk. 1097255570Strasz */ 1098255570Strasz cdw->cdw_ctl_io->scsiio.io_hdr.port_status = 42; 1099255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 1100255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 1101255570Strasz CFISCSI_SESSION_LOCK(cs); 1102255570Strasz } 1103255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1104268259Smav 1105268259Smav /* 1106268259Smav * Wait for CTL to terminate all the tasks. 1107268259Smav */ 1108268259Smav for (;;) { 1109268259Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1110255570Strasz last = refcount_release(&cs->cs_outstanding_ctl_pdus); 1111255570Strasz if (last != 0) 1112255570Strasz break; 1113255570Strasz CFISCSI_SESSION_WARN(cs, "waiting for CTL to terminate tasks, " 1114255570Strasz "%d remaining", cs->cs_outstanding_ctl_pdus); 1115255570Strasz tsleep(__DEVOLATILE(void *, &cs->cs_outstanding_ctl_pdus), 1116268259Smav 0, "cfiscsi_terminate", hz / 100); 1117268259Smav } 1118268259Smav} 1119268259Smav 1120268259Smavstatic void 1121268259Smavcfiscsi_maintenance_thread(void *arg) 1122268259Smav{ 1123268259Smav struct cfiscsi_session *cs; 1124268259Smav 1125268259Smav cs = arg; 1126268259Smav 1127268259Smav for (;;) { 1128268259Smav CFISCSI_SESSION_LOCK(cs); 1129255570Strasz if (cs->cs_terminating == false) 1130255570Strasz cv_wait(&cs->cs_maintenance_cv, &cs->cs_lock); 1131255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1132255570Strasz 1133255570Strasz if (cs->cs_terminating) { 1134255570Strasz 1135255570Strasz /* 1136255570Strasz * We used to wait up to 30 seconds to deliver queued 1137255570Strasz * PDUs to the initiator. We also tried hard to deliver 1138255570Strasz * SCSI Responses for the aborted PDUs. We don't do 1139255570Strasz * that anymore. We might need to revisit that. 1140255570Strasz */ 1141255570Strasz callout_drain(&cs->cs_callout); 1142255570Strasz icl_conn_shutdown(cs->cs_conn); 1143255570Strasz icl_conn_close(cs->cs_conn); 1144255570Strasz 1145268259Smav /* 1146268259Smav * At this point ICL receive thread is no longer 1147268259Smav * running; no new tasks can be queued. 1148268259Smav */ 1149268259Smav cfiscsi_session_terminate_tasks(cs); 1150268259Smav cfiscsi_session_delete(cs); 1151268259Smav kthread_exit(); 1152255570Strasz return; 1153255570Strasz } 1154255570Strasz CFISCSI_SESSION_DEBUG(cs, "nothing to do"); 1155255570Strasz } 1156255570Strasz} 1157268259Smav 1158268259Smavstatic void 1159255570Straszcfiscsi_session_terminate(struct cfiscsi_session *cs) 1160268259Smav{ 1161255570Strasz 1162255570Strasz if (cs->cs_terminating) 1163255570Strasz return; 1164255570Strasz cs->cs_terminating = true; 1165255570Strasz cv_signal(&cs->cs_maintenance_cv); 1166255570Strasz#ifdef ICL_KERNEL_PROXY 1167255570Strasz cv_signal(&cs->cs_login_cv); 1168255570Strasz#endif 1169255570Strasz} 1170255570Strasz 1171255570Straszstatic int 1172255570Straszcfiscsi_session_register_initiator(struct cfiscsi_session *cs) 1173268258Smav{ 1174255570Strasz struct cfiscsi_target *ct; 1175268258Smav char *name; 1176255570Strasz int i; 1177265510Strasz 1178265510Strasz KASSERT(cs->cs_ctl_initid == -1, ("already registered")); 1179265510Strasz 1180255570Strasz ct = cs->cs_target; 1181255570Strasz name = strdup(cs->cs_initiator_id, M_CTL); 1182255570Strasz i = ctl_add_initiator(&ct->ct_port, -1, 0, name); 1183255570Strasz if (i < 0) { 1184255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_add_initiator failed with error %d", 1185255570Strasz i); 1186255570Strasz cs->cs_ctl_initid = -1; 1187255570Strasz return (1); 1188255570Strasz } 1189255570Strasz cs->cs_ctl_initid = i; 1190255570Strasz#if 0 1191255570Strasz CFISCSI_SESSION_DEBUG(cs, "added initiator id %d", i); 1192255570Strasz#endif 1193255570Strasz 1194255570Strasz return (0); 1195255570Strasz} 1196255570Strasz 1197255570Straszstatic void 1198255570Straszcfiscsi_session_unregister_initiator(struct cfiscsi_session *cs) 1199255570Strasz{ 1200255570Strasz int error; 1201255570Strasz 1202255570Strasz if (cs->cs_ctl_initid == -1) 1203255570Strasz return; 1204255570Strasz 1205255570Strasz error = ctl_remove_initiator(&cs->cs_target->ct_port, cs->cs_ctl_initid); 1206255570Strasz if (error != 0) { 1207255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_remove_initiator failed with error %d", 1208255570Strasz error); 1209255570Strasz } 1210255570Strasz cs->cs_ctl_initid = -1; 1211255570Strasz} 1212255570Strasz 1213255570Straszstatic struct cfiscsi_session * 1214255570Straszcfiscsi_session_new(struct cfiscsi_softc *softc) 1215255570Strasz{ 1216255570Strasz struct cfiscsi_session *cs; 1217255570Strasz int error; 1218255570Strasz 1219255570Strasz cs = malloc(sizeof(*cs), M_CFISCSI, M_NOWAIT | M_ZERO); 1220255570Strasz if (cs == NULL) { 1221255570Strasz CFISCSI_WARN("malloc failed"); 1222255570Strasz return (NULL); 1223255570Strasz } 1224255570Strasz cs->cs_ctl_initid = -1; 1225255570Strasz 1226255570Strasz refcount_init(&cs->cs_outstanding_ctl_pdus, 0); 1227255570Strasz TAILQ_INIT(&cs->cs_waiting_for_data_out); 1228255570Strasz mtx_init(&cs->cs_lock, "cfiscsi_lock", NULL, MTX_DEF); 1229255570Strasz cv_init(&cs->cs_maintenance_cv, "cfiscsi_mt"); 1230255570Strasz#ifdef ICL_KERNEL_PROXY 1231255570Strasz cv_init(&cs->cs_login_cv, "cfiscsi_login"); 1232255570Strasz#endif 1233255570Strasz 1234255570Strasz cs->cs_conn = icl_conn_new("cfiscsi", &cs->cs_lock); 1235255570Strasz cs->cs_conn->ic_receive = cfiscsi_receive_callback; 1236255570Strasz cs->cs_conn->ic_error = cfiscsi_error_callback; 1237255570Strasz cs->cs_conn->ic_prv0 = cs; 1238255570Strasz 1239255570Strasz error = kthread_add(cfiscsi_maintenance_thread, cs, NULL, NULL, 0, 0, "cfiscsimt"); 1240255570Strasz if (error != 0) { 1241255570Strasz CFISCSI_SESSION_WARN(cs, "kthread_add(9) failed with error %d", error); 1242255570Strasz free(cs, M_CFISCSI); 1243255570Strasz return (NULL); 1244255570Strasz } 1245255570Strasz 1246255570Strasz mtx_lock(&softc->lock); 1247255570Strasz cs->cs_id = softc->last_session_id + 1; 1248255570Strasz softc->last_session_id++; 1249255570Strasz mtx_unlock(&softc->lock); 1250255570Strasz 1251255570Strasz mtx_lock(&softc->lock); 1252255570Strasz TAILQ_INSERT_TAIL(&softc->sessions, cs, cs_next); 1253255570Strasz mtx_unlock(&softc->lock); 1254255570Strasz 1255255570Strasz /* 1256255570Strasz * Start pinging the initiator. 1257255570Strasz */ 1258255570Strasz callout_init(&cs->cs_callout, 1); 1259255570Strasz callout_reset(&cs->cs_callout, 1 * hz, cfiscsi_callout, cs); 1260255570Strasz 1261255570Strasz return (cs); 1262255570Strasz} 1263255570Strasz 1264255570Straszstatic void 1265255570Straszcfiscsi_session_delete(struct cfiscsi_session *cs) 1266255570Strasz{ 1267265496Strasz struct cfiscsi_softc *softc; 1268255570Strasz 1269255570Strasz softc = &cfiscsi_softc; 1270255570Strasz 1271255570Strasz KASSERT(cs->cs_outstanding_ctl_pdus == 0, 1272255570Strasz ("destroying session with outstanding CTL pdus")); 1273255570Strasz KASSERT(TAILQ_EMPTY(&cs->cs_waiting_for_data_out), 1274255570Strasz ("destroying session with non-empty queue")); 1275255570Strasz 1276255570Strasz cfiscsi_session_unregister_initiator(cs); 1277255570Strasz if (cs->cs_target != NULL) 1278255570Strasz cfiscsi_target_release(cs->cs_target); 1279255570Strasz icl_conn_close(cs->cs_conn); 1280255570Strasz icl_conn_free(cs->cs_conn); 1281255570Strasz 1282255570Strasz mtx_lock(&softc->lock); 1283255570Strasz TAILQ_REMOVE(&softc->sessions, cs, cs_next); 1284255570Strasz mtx_unlock(&softc->lock); 1285255570Strasz 1286255570Strasz free(cs, M_CFISCSI); 1287255570Strasz} 1288255570Strasz 1289255570Straszint 1290255570Straszcfiscsi_init(void) 1291255570Strasz{ 1292255570Strasz struct cfiscsi_softc *softc; 1293255570Strasz int retval; 1294255570Strasz 1295255570Strasz softc = &cfiscsi_softc; 1296255570Strasz retval = 0; 1297255570Strasz bzero(softc, sizeof(*softc)); 1298255570Strasz mtx_init(&softc->lock, "cfiscsi", NULL, MTX_DEF); 1299255570Strasz 1300255570Strasz#ifdef ICL_KERNEL_PROXY 1301255570Strasz cv_init(&softc->accept_cv, "cfiscsi_accept"); 1302255570Strasz#endif 1303255570Strasz TAILQ_INIT(&softc->sessions); 1304255570Strasz TAILQ_INIT(&softc->targets); 1305255570Strasz 1306255570Strasz cfiscsi_data_wait_zone = uma_zcreate("cfiscsi_data_wait", 1307255570Strasz sizeof(struct cfiscsi_data_wait), NULL, NULL, NULL, NULL, 1308255570Strasz UMA_ALIGN_PTR, 0); 1309255570Strasz 1310255570Strasz return (0); 1311255570Strasz} 1312255570Strasz 1313255570Strasz#ifdef ICL_KERNEL_PROXY 1314255570Straszstatic void 1315255570Straszcfiscsi_accept(struct socket *so, struct sockaddr *sa, int portal_id) 1316255570Strasz{ 1317255570Strasz struct cfiscsi_session *cs; 1318255570Strasz 1319255570Strasz cs = cfiscsi_session_new(&cfiscsi_softc); 1320255570Strasz if (cs == NULL) { 1321255570Strasz CFISCSI_WARN("failed to create session"); 1322255570Strasz return; 1323255570Strasz } 1324255570Strasz 1325255570Strasz icl_conn_handoff_sock(cs->cs_conn, so); 1326255570Strasz cs->cs_initiator_sa = sa; 1327255570Strasz cs->cs_portal_id = portal_id; 1328255570Strasz cs->cs_waiting_for_ctld = true; 1329255570Strasz cv_signal(&cfiscsi_softc.accept_cv); 1330255570Strasz} 1331255570Strasz#endif 1332255570Strasz 1333255570Straszstatic void 1334255570Straszcfiscsi_online(void *arg) 1335255570Strasz{ 1336255570Strasz struct cfiscsi_softc *softc; 1337255570Strasz struct cfiscsi_target *ct; 1338255570Strasz int online; 1339255570Strasz 1340255570Strasz ct = (struct cfiscsi_target *)arg; 1341255570Strasz softc = ct->ct_softc; 1342255570Strasz 1343255570Strasz mtx_lock(&softc->lock); 1344255570Strasz if (ct->ct_online) { 1345255570Strasz mtx_unlock(&softc->lock); 1346255570Strasz return; 1347255570Strasz } 1348255570Strasz ct->ct_online = 1; 1349255570Strasz online = softc->online++; 1350255570Strasz mtx_unlock(&softc->lock); 1351255570Strasz if (online > 0) 1352255570Strasz return; 1353255570Strasz 1354255570Strasz#ifdef ICL_KERNEL_PROXY 1355255570Strasz if (softc->listener != NULL) 1356255570Strasz icl_listen_free(softc->listener); 1357255570Strasz softc->listener = icl_listen_new(cfiscsi_accept); 1358255570Strasz#endif 1359255570Strasz} 1360255570Strasz 1361255570Straszstatic void 1362255570Straszcfiscsi_offline(void *arg) 1363255570Strasz{ 1364255570Strasz struct cfiscsi_softc *softc; 1365255570Strasz struct cfiscsi_target *ct; 1366255570Strasz struct cfiscsi_session *cs; 1367255570Strasz int online; 1368255570Strasz 1369255570Strasz ct = (struct cfiscsi_target *)arg; 1370255570Strasz softc = ct->ct_softc; 1371255570Strasz 1372255570Strasz mtx_lock(&softc->lock); 1373255570Strasz if (!ct->ct_online) { 1374255570Strasz mtx_unlock(&softc->lock); 1375255570Strasz return; 1376256058Strasz } 1377255570Strasz ct->ct_online = 0; 1378255570Strasz online = --softc->online; 1379255570Strasz 1380255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1381255570Strasz if (cs->cs_target == ct) 1382255570Strasz cfiscsi_session_terminate(cs); 1383255570Strasz } 1384255570Strasz mtx_unlock(&softc->lock); 1385255570Strasz if (online > 0) 1386255570Strasz return; 1387255570Strasz 1388255570Strasz#ifdef ICL_KERNEL_PROXY 1389255570Strasz icl_listen_free(softc->listener); 1390255570Strasz softc->listener = NULL; 1391255570Strasz#endif 1392255570Strasz} 1393255570Strasz 1394255570Straszstatic int 1395255570Straszcfiscsi_info(void *arg, struct sbuf *sb) 1396255570Strasz{ 1397255570Strasz struct cfiscsi_target *ct = (struct cfiscsi_target *)arg; 1398255570Strasz int retval; 1399255570Strasz 1400265513Strasz retval = sbuf_printf(sb, "\t<cfiscsi_state>%d</cfiscsi_state>\n", 1401255570Strasz ct->ct_state); 1402255570Strasz return (retval); 1403255570Strasz} 1404255570Strasz 1405255570Straszstatic void 1406255570Straszcfiscsi_ioctl_handoff(struct ctl_iscsi *ci) 1407255570Strasz{ 1408255570Strasz struct cfiscsi_softc *softc; 1409255570Strasz struct cfiscsi_session *cs, *cs2; 1410255570Strasz struct cfiscsi_target *ct; 1411265513Strasz struct ctl_iscsi_handoff_params *cihp; 1412265509Strasz int error; 1413255570Strasz 1414255570Strasz cihp = (struct ctl_iscsi_handoff_params *)&(ci->data); 1415255570Strasz softc = &cfiscsi_softc; 1416255570Strasz 1417255570Strasz CFISCSI_DEBUG("new connection from %s (%s) to %s", 1418255570Strasz cihp->initiator_name, cihp->initiator_addr, 1419255570Strasz cihp->target_name); 1420255570Strasz 1421255570Strasz ct = cfiscsi_target_find(softc, cihp->target_name); 1422255570Strasz if (ct == NULL) { 1423255570Strasz ci->status = CTL_ISCSI_ERROR; 1424255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1425255570Strasz "%s: target not found", __func__); 1426255570Strasz return; 1427255570Strasz } 1428255570Strasz 1429255570Strasz if (ct->ct_online == 0) { 1430255570Strasz ci->status = CTL_ISCSI_ERROR; 1431255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1432255570Strasz "%s: port offline", __func__); 1433255570Strasz cfiscsi_target_release(ct); 1434255570Strasz return; 1435255570Strasz } 1436255570Strasz 1437255570Strasz#ifdef ICL_KERNEL_PROXY 1438255570Strasz if (cihp->socket > 0 && cihp->connection_id > 0) { 1439255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1440255570Strasz "both socket and connection_id set"); 1441255570Strasz ci->status = CTL_ISCSI_ERROR; 1442255570Strasz cfiscsi_target_release(ct); 1443255570Strasz return; 1444255570Strasz } 1445255570Strasz if (cihp->socket == 0) { 1446255570Strasz mtx_lock(&cfiscsi_softc.lock); 1447255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1448255570Strasz if (cs->cs_id == cihp->socket) 1449255570Strasz break; 1450255570Strasz } 1451255570Strasz if (cs == NULL) { 1452255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1453255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1454255570Strasz "connection not found"); 1455255570Strasz ci->status = CTL_ISCSI_ERROR; 1456255570Strasz cfiscsi_target_release(ct); 1457255570Strasz return; 1458255570Strasz } 1459255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1460255570Strasz } else { 1461255570Strasz#endif 1462255570Strasz cs = cfiscsi_session_new(softc); 1463255570Strasz if (cs == NULL) { 1464255570Strasz ci->status = CTL_ISCSI_ERROR; 1465255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1466255570Strasz "%s: cfiscsi_session_new failed", __func__); 1467255570Strasz cfiscsi_target_release(ct); 1468255570Strasz return; 1469255570Strasz } 1470255570Strasz#ifdef ICL_KERNEL_PROXY 1471255570Strasz } 1472255570Strasz#endif 1473255570Strasz cs->cs_target = ct; 1474255570Strasz 1475255570Strasz /* 1476255570Strasz * First PDU of Full Feature phase has the same CmdSN as the last 1477255570Strasz * PDU from the Login Phase received from the initiator. Thus, 1478255570Strasz * the -1 below. 1479255570Strasz */ 1480255570Strasz cs->cs_portal_group_tag = cihp->portal_group_tag; 1481255570Strasz cs->cs_cmdsn = cihp->cmdsn; 1482255570Strasz cs->cs_statsn = cihp->statsn; 1483255570Strasz cs->cs_max_data_segment_length = cihp->max_recv_data_segment_length; 1484255570Strasz cs->cs_max_burst_length = cihp->max_burst_length; 1485255570Strasz cs->cs_immediate_data = !!cihp->immediate_data; 1486255570Strasz if (cihp->header_digest == CTL_ISCSI_DIGEST_CRC32C) 1487255570Strasz cs->cs_conn->ic_header_crc32c = true; 1488255570Strasz if (cihp->data_digest == CTL_ISCSI_DIGEST_CRC32C) 1489255570Strasz cs->cs_conn->ic_data_crc32c = true; 1490255570Strasz 1491255570Strasz strlcpy(cs->cs_initiator_name, 1492255570Strasz cihp->initiator_name, sizeof(cs->cs_initiator_name)); 1493255570Strasz strlcpy(cs->cs_initiator_addr, 1494255570Strasz cihp->initiator_addr, sizeof(cs->cs_initiator_addr)); 1495255570Strasz strlcpy(cs->cs_initiator_alias, 1496255570Strasz cihp->initiator_alias, sizeof(cs->cs_initiator_alias)); 1497255570Strasz memcpy(cs->cs_initiator_isid, 1498255570Strasz cihp->initiator_isid, sizeof(cs->cs_initiator_isid)); 1499255570Strasz snprintf(cs->cs_initiator_id, sizeof(cs->cs_initiator_id), 1500265507Strasz "%s,i,0x%02x%02x%02x%02x%02x%02x", cs->cs_initiator_name, 1501265507Strasz cihp->initiator_isid[0], cihp->initiator_isid[1], 1502265507Strasz cihp->initiator_isid[2], cihp->initiator_isid[3], 1503255570Strasz cihp->initiator_isid[4], cihp->initiator_isid[5]); 1504264523Smav 1505255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1506255570Straszrestart: 1507265507Strasz if (!cs->cs_terminating) { 1508265507Strasz mtx_lock(&softc->lock); 1509265507Strasz TAILQ_FOREACH(cs2, &softc->sessions, cs_next) { 1510265507Strasz if (cs2 != cs && cs2->cs_tasks_aborted == false && 1511265507Strasz cs->cs_target == cs2->cs_target && 1512265507Strasz cs->cs_portal_group_tag == cs2->cs_portal_group_tag && 1513265507Strasz strcmp(cs->cs_initiator_id, cs2->cs_initiator_id) == 0) { 1514265507Strasz cfiscsi_session_terminate(cs2); 1515265507Strasz mtx_unlock(&softc->lock); 1516265507Strasz pause("cfiscsi_reinstate", 1); 1517265507Strasz goto restart; 1518265507Strasz } 1519265507Strasz } 1520265507Strasz mtx_unlock(&softc->lock); 1521265507Strasz } 1522265507Strasz 1523265507Strasz /* 1524265507Strasz * Register initiator with CTL. 1525265507Strasz */ 1526265507Strasz cfiscsi_session_register_initiator(cs); 1527265507Strasz 1528265507Strasz#ifdef ICL_KERNEL_PROXY 1529265507Strasz if (cihp->socket > 0) { 1530265507Strasz#endif 1531265507Strasz error = icl_conn_handoff(cs->cs_conn, cihp->socket); 1532265507Strasz if (error != 0) { 1533255570Strasz cfiscsi_session_terminate(cs); 1534255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 1535255570Strasz ci->status = CTL_ISCSI_ERROR; 1536255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1537255570Strasz "%s: icl_conn_handoff failed with error %d", 1538255570Strasz __func__, error); 1539255570Strasz return; 1540255570Strasz } 1541255570Strasz#ifdef ICL_KERNEL_PROXY 1542255570Strasz } 1543255570Strasz#endif 1544255570Strasz 1545255570Strasz#ifdef ICL_KERNEL_PROXY 1546255570Strasz cs->cs_login_phase = false; 1547255570Strasz 1548255570Strasz /* 1549255570Strasz * First PDU of the Full Feature phase has likely already arrived. 1550255570Strasz * We have to pick it up and execute properly. 1551255570Strasz */ 1552255570Strasz if (cs->cs_login_pdu != NULL) { 1553255570Strasz CFISCSI_SESSION_DEBUG(cs, "picking up first PDU"); 1554255570Strasz cfiscsi_pdu_handle(cs->cs_login_pdu); 1555255570Strasz cs->cs_login_pdu = NULL; 1556255570Strasz } 1557255570Strasz#endif 1558255570Strasz 1559255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 1560255570Strasz ci->status = CTL_ISCSI_OK; 1561265507Strasz} 1562265507Strasz 1563265507Straszstatic void 1564265507Straszcfiscsi_ioctl_list(struct ctl_iscsi *ci) 1565265507Strasz{ 1566265507Strasz struct ctl_iscsi_list_params *cilp; 1567265507Strasz struct cfiscsi_session *cs; 1568265507Strasz struct cfiscsi_softc *softc; 1569265507Strasz struct sbuf *sb; 1570265507Strasz int error; 1571265507Strasz 1572265507Strasz cilp = (struct ctl_iscsi_list_params *)&(ci->data); 1573255570Strasz softc = &cfiscsi_softc; 1574255570Strasz 1575255570Strasz sb = sbuf_new(NULL, NULL, cilp->alloc_len, SBUF_FIXEDLEN); 1576255570Strasz if (sb == NULL) { 1577255570Strasz ci->status = CTL_ISCSI_ERROR; 1578255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1579255570Strasz "Unable to allocate %d bytes for iSCSI session list", 1580255570Strasz cilp->alloc_len); 1581255570Strasz return; 1582265507Strasz } 1583265507Strasz 1584255570Strasz sbuf_printf(sb, "<ctlislist>\n"); 1585255570Strasz mtx_lock(&softc->lock); 1586255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1587255570Strasz#ifdef ICL_KERNEL_PROXY 1588255570Strasz if (cs->cs_target == NULL) 1589255570Strasz continue; 1590255570Strasz#endif 1591255570Strasz error = sbuf_printf(sb, "<connection id=\"%d\">" 1592255570Strasz "<initiator>%s</initiator>" 1593255570Strasz "<initiator_addr>%s</initiator_addr>" 1594255570Strasz "<initiator_alias>%s</initiator_alias>" 1595255570Strasz "<target>%s</target>" 1596255570Strasz "<target_alias>%s</target_alias>" 1597255570Strasz "<header_digest>%s</header_digest>" 1598255570Strasz "<data_digest>%s</data_digest>" 1599255570Strasz "<max_data_segment_length>%zd</max_data_segment_length>" 1600255570Strasz "<immediate_data>%d</immediate_data>" 1601255570Strasz "<iser>%d</iser>" 1602255570Strasz "</connection>\n", 1603255570Strasz cs->cs_id, 1604255570Strasz cs->cs_initiator_name, cs->cs_initiator_addr, cs->cs_initiator_alias, 1605255570Strasz cs->cs_target->ct_name, cs->cs_target->ct_alias, 1606255570Strasz cs->cs_conn->ic_header_crc32c ? "CRC32C" : "None", 1607255570Strasz cs->cs_conn->ic_data_crc32c ? "CRC32C" : "None", 1608255570Strasz cs->cs_max_data_segment_length, 1609255570Strasz cs->cs_immediate_data, 1610255570Strasz cs->cs_conn->ic_iser); 1611255570Strasz if (error != 0) 1612255570Strasz break; 1613255570Strasz } 1614255570Strasz mtx_unlock(&softc->lock); 1615255570Strasz error = sbuf_printf(sb, "</ctlislist>\n"); 1616255570Strasz if (error != 0) { 1617255570Strasz sbuf_delete(sb); 1618255570Strasz ci->status = CTL_ISCSI_LIST_NEED_MORE_SPACE; 1619255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1620255570Strasz "Out of space, %d bytes is too small", cilp->alloc_len); 1621255570Strasz return; 1622255570Strasz } 1623255570Strasz sbuf_finish(sb); 1624255570Strasz 1625255570Strasz error = copyout(sbuf_data(sb), cilp->conn_xml, sbuf_len(sb) + 1); 1626255570Strasz cilp->fill_len = sbuf_len(sb) + 1; 1627255570Strasz ci->status = CTL_ISCSI_OK; 1628255570Strasz sbuf_delete(sb); 1629255570Strasz} 1630255570Strasz 1631255570Straszstatic void 1632255570Straszcfiscsi_ioctl_terminate(struct ctl_iscsi *ci) 1633255570Strasz{ 1634255570Strasz struct icl_pdu *response; 1635255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1636255570Strasz struct ctl_iscsi_terminate_params *citp; 1637255570Strasz struct cfiscsi_session *cs; 1638255570Strasz struct cfiscsi_softc *softc; 1639255570Strasz int found = 0; 1640255570Strasz 1641255570Strasz citp = (struct ctl_iscsi_terminate_params *)&(ci->data); 1642255570Strasz softc = &cfiscsi_softc; 1643255570Strasz 1644255570Strasz mtx_lock(&softc->lock); 1645255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1646255570Strasz if (citp->all == 0 && cs->cs_id != citp->connection_id && 1647255570Strasz strcmp(cs->cs_initiator_name, citp->initiator_name) != 0 && 1648255570Strasz strcmp(cs->cs_initiator_addr, citp->initiator_addr) != 0) 1649255570Strasz continue; 1650255570Strasz 1651255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1652255570Strasz if (response == NULL) { 1653255570Strasz /* 1654255570Strasz * Oh well. Just terminate the connection. 1655255570Strasz */ 1656255570Strasz } else { 1657255570Strasz bhsam = (struct iscsi_bhs_asynchronous_message *) 1658255570Strasz response->ip_bhs; 1659255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1660255570Strasz bhsam->bhsam_flags = 0x80; 1661255570Strasz bhsam->bhsam_0xffffffff = 0xffffffff; 1662255570Strasz bhsam->bhsam_async_event = 1663255570Strasz BHSAM_EVENT_TARGET_TERMINATES_SESSION; 1664255570Strasz cfiscsi_pdu_queue(response); 1665255570Strasz } 1666255570Strasz cfiscsi_session_terminate(cs); 1667255570Strasz found++; 1668255570Strasz } 1669255570Strasz mtx_unlock(&softc->lock); 1670255570Strasz 1671255570Strasz if (found == 0) { 1672255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1673255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1674255570Strasz "No matching connections found"); 1675255570Strasz return; 1676255570Strasz } 1677255570Strasz 1678255570Strasz ci->status = CTL_ISCSI_OK; 1679255570Strasz} 1680255570Strasz 1681255570Straszstatic void 1682255570Straszcfiscsi_ioctl_logout(struct ctl_iscsi *ci) 1683255570Strasz{ 1684255570Strasz struct icl_pdu *response; 1685255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1686255570Strasz struct ctl_iscsi_logout_params *cilp; 1687255570Strasz struct cfiscsi_session *cs; 1688255570Strasz struct cfiscsi_softc *softc; 1689255570Strasz int found = 0; 1690255570Strasz 1691255570Strasz cilp = (struct ctl_iscsi_logout_params *)&(ci->data); 1692255570Strasz softc = &cfiscsi_softc; 1693255570Strasz 1694255570Strasz mtx_lock(&softc->lock); 1695255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1696255570Strasz if (cilp->all == 0 && cs->cs_id != cilp->connection_id && 1697255570Strasz strcmp(cs->cs_initiator_name, cilp->initiator_name) != 0 && 1698255570Strasz strcmp(cs->cs_initiator_addr, cilp->initiator_addr) != 0) 1699255570Strasz continue; 1700255570Strasz 1701255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1702255570Strasz if (response == NULL) { 1703255570Strasz ci->status = CTL_ISCSI_ERROR; 1704255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1705255570Strasz "Unable to allocate memory"); 1706255570Strasz mtx_unlock(&softc->lock); 1707255570Strasz return; 1708255570Strasz } 1709255570Strasz bhsam = 1710255570Strasz (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1711255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1712255570Strasz bhsam->bhsam_flags = 0x80; 1713255570Strasz bhsam->bhsam_async_event = BHSAM_EVENT_TARGET_REQUESTS_LOGOUT; 1714255570Strasz bhsam->bhsam_parameter3 = htons(10); 1715255570Strasz cfiscsi_pdu_queue(response); 1716255570Strasz found++; 1717255570Strasz } 1718255570Strasz mtx_unlock(&softc->lock); 1719255570Strasz 1720255570Strasz if (found == 0) { 1721255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1722255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1723255570Strasz "No matching connections found"); 1724255570Strasz return; 1725255570Strasz } 1726255570Strasz 1727255570Strasz ci->status = CTL_ISCSI_OK; 1728255570Strasz} 1729255570Strasz 1730255570Strasz#ifdef ICL_KERNEL_PROXY 1731255570Straszstatic void 1732255570Straszcfiscsi_ioctl_listen(struct ctl_iscsi *ci) 1733255570Strasz{ 1734255570Strasz struct ctl_iscsi_listen_params *cilp; 1735255570Strasz struct sockaddr *sa; 1736255570Strasz int error; 1737255570Strasz 1738255570Strasz cilp = (struct ctl_iscsi_listen_params *)&(ci->data); 1739255570Strasz 1740255570Strasz if (cfiscsi_softc.listener == NULL) { 1741255570Strasz CFISCSI_DEBUG("no listener"); 1742255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "no listener"); 1743255570Strasz ci->status = CTL_ISCSI_ERROR; 1744255570Strasz return; 1745255570Strasz } 1746255570Strasz 1747255570Strasz error = getsockaddr(&sa, (void *)cilp->addr, cilp->addrlen); 1748255570Strasz if (error != 0) { 1749255570Strasz CFISCSI_DEBUG("getsockaddr, error %d", error); 1750255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "getsockaddr failed"); 1751255570Strasz ci->status = CTL_ISCSI_ERROR; 1752255570Strasz return; 1753255570Strasz } 1754255570Strasz 1755255570Strasz error = icl_listen_add(cfiscsi_softc.listener, cilp->iser, cilp->domain, 1756255570Strasz cilp->socktype, cilp->protocol, sa, cilp->portal_id); 1757255570Strasz if (error != 0) { 1758255570Strasz free(sa, M_SONAME); 1759255570Strasz CFISCSI_DEBUG("icl_listen_add, error %d", error); 1760255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1761255570Strasz "icl_listen_add failed, error %d", error); 1762255570Strasz ci->status = CTL_ISCSI_ERROR; 1763255570Strasz return; 1764255570Strasz } 1765255570Strasz 1766255570Strasz ci->status = CTL_ISCSI_OK; 1767255570Strasz} 1768255570Strasz 1769255570Straszstatic void 1770255570Straszcfiscsi_ioctl_accept(struct ctl_iscsi *ci) 1771255570Strasz{ 1772255570Strasz struct ctl_iscsi_accept_params *ciap; 1773255570Strasz struct cfiscsi_session *cs; 1774255570Strasz int error; 1775255570Strasz 1776255570Strasz ciap = (struct ctl_iscsi_accept_params *)&(ci->data); 1777255570Strasz 1778255570Strasz mtx_lock(&cfiscsi_softc.lock); 1779255570Strasz for (;;) { 1780255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1781255570Strasz if (cs->cs_waiting_for_ctld) 1782255570Strasz break; 1783255570Strasz } 1784255570Strasz if (cs != NULL) 1785255570Strasz break; 1786255570Strasz error = cv_wait_sig(&cfiscsi_softc.accept_cv, &cfiscsi_softc.lock); 1787255570Strasz if (error != 0) { 1788255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1789255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "interrupted"); 1790255570Strasz ci->status = CTL_ISCSI_ERROR; 1791265509Strasz return; 1792255570Strasz } 1793255570Strasz } 1794255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1795255570Strasz 1796255570Strasz cs->cs_waiting_for_ctld = false; 1797255570Strasz cs->cs_login_phase = true; 1798255570Strasz 1799255570Strasz ciap->connection_id = cs->cs_id; 1800255570Strasz ciap->portal_id = cs->cs_portal_id; 1801255570Strasz ciap->initiator_addrlen = cs->cs_initiator_sa->sa_len; 1802255570Strasz error = copyout(cs->cs_initiator_sa, ciap->initiator_addr, 1803255570Strasz cs->cs_initiator_sa->sa_len); 1804255570Strasz if (error != 0) { 1805255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1806255570Strasz "copyout failed with error %d", error); 1807255570Strasz ci->status = CTL_ISCSI_ERROR; 1808255570Strasz return; 1809255570Strasz } 1810255570Strasz 1811255570Strasz ci->status = CTL_ISCSI_OK; 1812255570Strasz} 1813255570Strasz 1814255570Straszstatic void 1815255570Straszcfiscsi_ioctl_send(struct ctl_iscsi *ci) 1816255570Strasz{ 1817255570Strasz struct ctl_iscsi_send_params *cisp; 1818255570Strasz struct cfiscsi_session *cs; 1819255570Strasz struct icl_pdu *ip; 1820255570Strasz size_t datalen; 1821255570Strasz void *data; 1822255570Strasz int error; 1823255570Strasz 1824255570Strasz cisp = (struct ctl_iscsi_send_params *)&(ci->data); 1825255570Strasz 1826255570Strasz mtx_lock(&cfiscsi_softc.lock); 1827255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1828255570Strasz if (cs->cs_id == cisp->connection_id) 1829255570Strasz break; 1830255570Strasz } 1831255570Strasz if (cs == NULL) { 1832255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1833255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1834255570Strasz ci->status = CTL_ISCSI_ERROR; 1835265509Strasz return; 1836265513Strasz } 1837265513Strasz mtx_unlock(&cfiscsi_softc.lock); 1838265513Strasz 1839265513Strasz#if 0 1840265513Strasz if (cs->cs_login_phase == false) 1841265513Strasz return (EBUSY); 1842265513Strasz#endif 1843265513Strasz 1844265513Strasz if (cs->cs_terminating) { 1845265513Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection is terminating"); 1846255570Strasz ci->status = CTL_ISCSI_ERROR; 1847255570Strasz return; 1848255570Strasz } 1849255570Strasz 1850255570Strasz datalen = cisp->data_segment_len; 1851255570Strasz /* 1852255570Strasz * XXX 1853255570Strasz */ 1854255570Strasz //if (datalen > CFISCSI_MAX_DATA_SEGMENT_LENGTH) { 1855255570Strasz if (datalen > 65535) { 1856255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1857255570Strasz ci->status = CTL_ISCSI_ERROR; 1858255570Strasz return; 1859255570Strasz } 1860255570Strasz if (datalen > 0) { 1861255570Strasz data = malloc(datalen, M_CFISCSI, M_WAITOK); 1862255570Strasz error = copyin(cisp->data_segment, data, datalen); 1863255570Strasz if (error != 0) { 1864255570Strasz free(data, M_CFISCSI); 1865255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "copyin error %d", error); 1866255570Strasz ci->status = CTL_ISCSI_ERROR; 1867255570Strasz return; 1868255570Strasz } 1869255570Strasz } 1870255570Strasz 1871255570Strasz ip = icl_pdu_new_bhs(cs->cs_conn, M_WAITOK); 1872255570Strasz memcpy(ip->ip_bhs, cisp->bhs, sizeof(*ip->ip_bhs)); 1873255570Strasz if (datalen > 0) { 1874255570Strasz icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1875255570Strasz free(data, M_CFISCSI); 1876255570Strasz } 1877255570Strasz CFISCSI_SESSION_LOCK(cs); 1878255570Strasz icl_pdu_queue(ip); 1879255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1880255570Strasz ci->status = CTL_ISCSI_OK; 1881255570Strasz} 1882255570Strasz 1883255570Straszstatic void 1884255570Straszcfiscsi_ioctl_receive(struct ctl_iscsi *ci) 1885255570Strasz{ 1886255570Strasz struct ctl_iscsi_receive_params *cirp; 1887255570Strasz struct cfiscsi_session *cs; 1888255570Strasz struct icl_pdu *ip; 1889255570Strasz void *data; 1890255570Strasz int error; 1891255570Strasz 1892255570Strasz cirp = (struct ctl_iscsi_receive_params *)&(ci->data); 1893255570Strasz 1894255570Strasz mtx_lock(&cfiscsi_softc.lock); 1895255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1896255570Strasz if (cs->cs_id == cirp->connection_id) 1897255570Strasz break; 1898255570Strasz } 1899255570Strasz if (cs == NULL) { 1900255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1901255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1902255570Strasz "connection not found"); 1903255570Strasz ci->status = CTL_ISCSI_ERROR; 1904255570Strasz return; 1905255570Strasz } 1906255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1907255570Strasz 1908255570Strasz#if 0 1909255570Strasz if (is->is_login_phase == false) 1910255570Strasz return (EBUSY); 1911255570Strasz#endif 1912265507Strasz 1913255570Strasz CFISCSI_SESSION_LOCK(cs); 1914265507Strasz while (cs->cs_login_pdu == NULL && cs->cs_terminating == false) { 1915255570Strasz error = cv_wait_sig(&cs->cs_login_cv, &cs->cs_lock); 1916255570Strasz if (error != 0) { 1917255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1918255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1919255570Strasz "interrupted by signal"); 1920255570Strasz ci->status = CTL_ISCSI_ERROR; 1921255570Strasz return; 1922255570Strasz } 1923255570Strasz } 1924255570Strasz 1925265510Strasz if (cs->cs_terminating) { 1926255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1927255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1928255570Strasz "connection terminating"); 1929255570Strasz ci->status = CTL_ISCSI_ERROR; 1930255570Strasz return; 1931255570Strasz } 1932255570Strasz ip = cs->cs_login_pdu; 1933255570Strasz cs->cs_login_pdu = NULL; 1934255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1935255570Strasz 1936265510Strasz if (ip->ip_data_len > cirp->data_segment_len) { 1937265510Strasz icl_pdu_free(ip); 1938255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1939255570Strasz "data segment too big"); 1940255570Strasz ci->status = CTL_ISCSI_ERROR; 1941255570Strasz return; 1942255570Strasz } 1943255570Strasz 1944255570Strasz copyout(ip->ip_bhs, cirp->bhs, sizeof(*ip->ip_bhs)); 1945255570Strasz if (ip->ip_data_len > 0) { 1946255570Strasz data = malloc(ip->ip_data_len, M_CFISCSI, M_WAITOK); 1947255570Strasz icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1948255570Strasz copyout(data, cirp->data_segment, ip->ip_data_len); 1949265510Strasz free(data, M_CFISCSI); 1950265510Strasz } 1951265510Strasz 1952265510Strasz icl_pdu_free(ip); 1953265510Strasz ci->status = CTL_ISCSI_OK; 1954265510Strasz} 1955265510Strasz 1956265510Strasz#endif /* !ICL_KERNEL_PROXY */ 1957265510Strasz 1958265510Straszstatic void 1959265510Straszcfiscsi_ioctl_port_create(struct ctl_req *req) 1960255570Strasz{ 1961255570Strasz struct cfiscsi_target *ct; 1962265510Strasz struct ctl_port *port; 1963265510Strasz const char *target, *alias, *tag; 1964255570Strasz struct scsi_vpd_id_descriptor *desc; 1965255570Strasz ctl_options_t opts; 1966255570Strasz int retval, len, idlen; 1967255570Strasz 1968255570Strasz ctl_init_opts(&opts, req->num_args, req->kern_args); 1969255570Strasz target = ctl_get_opt(&opts, "cfiscsi_target"); 1970255570Strasz alias = ctl_get_opt(&opts, "cfiscsi_target_alias"); 1971255570Strasz tag = ctl_get_opt(&opts, "cfiscsi_portal_group_tag"); 1972255570Strasz if (target == NULL || tag == NULL) { 1973265510Strasz req->status = CTL_LUN_ERROR; 1974265510Strasz snprintf(req->error_str, sizeof(req->error_str), 1975255570Strasz "Missing required argument"); 1976255570Strasz ctl_free_opts(&opts); 1977255570Strasz return; 1978255570Strasz } 1979255570Strasz ct = cfiscsi_target_find_or_create(&cfiscsi_softc, target, alias); 1980255570Strasz if (ct == NULL) { 1981255570Strasz req->status = CTL_LUN_ERROR; 1982255570Strasz snprintf(req->error_str, sizeof(req->error_str), 1983255570Strasz "failed to create target \"%s\"", target); 1984255570Strasz ctl_free_opts(&opts); 1985255570Strasz return; 1986255570Strasz } 1987255570Strasz if (ct->ct_state == CFISCSI_TARGET_STATE_ACTIVE) { 1988255570Strasz req->status = CTL_LUN_ERROR; 1989255570Strasz snprintf(req->error_str, sizeof(req->error_str), 1990255570Strasz "target \"%s\" already exist", target); 1991255570Strasz cfiscsi_target_release(ct); 1992255570Strasz ctl_free_opts(&opts); 1993255570Strasz return; 1994255570Strasz } 1995255570Strasz port = &ct->ct_port; 1996255570Strasz if (ct->ct_state == CFISCSI_TARGET_STATE_DYING) 1997255570Strasz goto done; 1998255570Strasz 1999255570Strasz port->frontend = &cfiscsi_frontend; 2000255570Strasz port->port_type = CTL_PORT_ISCSI; 2001255570Strasz /* XXX KDM what should the real number be here? */ 2002255570Strasz port->num_requested_ctl_io = 4096; 2003255570Strasz port->port_name = "iscsi"; 2004255570Strasz port->virtual_port = strtoul(tag, NULL, 0); 2005255570Strasz port->port_online = cfiscsi_online; 2006255570Strasz port->port_offline = cfiscsi_offline; 2007255570Strasz port->port_info = cfiscsi_info; 2008255570Strasz port->onoff_arg = ct; 2009255570Strasz port->lun_enable = cfiscsi_lun_enable; 2010255570Strasz port->lun_disable = cfiscsi_lun_disable; 2011255570Strasz port->lun_map = cfiscsi_lun_map; 2012255570Strasz port->targ_lun_arg = ct; 2013255570Strasz port->fe_datamove = cfiscsi_datamove; 2014255570Strasz port->fe_done = cfiscsi_done; 2015255570Strasz 2016255570Strasz /* XXX KDM what should we report here? */ 2017255570Strasz /* XXX These should probably be fetched from CTL. */ 2018255570Strasz port->max_targets = 1; 2019255570Strasz port->max_target_id = 15; 2020255570Strasz 2021255570Strasz port->options = opts; 2022255570Strasz STAILQ_INIT(&opts); 2023255570Strasz 2024255570Strasz /* Generate Port ID. */ 2025255570Strasz idlen = strlen(target) + strlen(",t,0x0001") + 1; 2026255570Strasz idlen = roundup2(idlen, 4); 2027255570Strasz len = sizeof(struct scsi_vpd_device_id) + idlen; 2028255570Strasz port->port_devid = malloc(sizeof(struct ctl_devid) + len, 2029265508Strasz M_CTL, M_WAITOK | M_ZERO); 2030265508Strasz port->port_devid->len = len; 2031265508Strasz desc = (struct scsi_vpd_id_descriptor *)port->port_devid->data; 2032265508Strasz desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2033265508Strasz desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2034265508Strasz SVPD_ID_TYPE_SCSI_NAME; 2035265508Strasz desc->length = idlen; 2036265508Strasz snprintf(desc->identifier, idlen, "%s,t,0x%4.4x", 2037265508Strasz target, port->virtual_port); 2038265508Strasz 2039265508Strasz /* Generate Target ID. */ 2040255570Strasz idlen = strlen(target) + 1; 2041255570Strasz idlen = roundup2(idlen, 4); 2042255570Strasz len = sizeof(struct scsi_vpd_device_id) + idlen; 2043255570Strasz port->target_devid = malloc(sizeof(struct ctl_devid) + len, 2044255570Strasz M_CTL, M_WAITOK | M_ZERO); 2045255570Strasz port->target_devid->len = len; 2046255570Strasz desc = (struct scsi_vpd_id_descriptor *)port->target_devid->data; 2047255570Strasz desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2048255570Strasz desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_TARGET | 2049255570Strasz SVPD_ID_TYPE_SCSI_NAME; 2050255570Strasz desc->length = idlen; 2051255570Strasz strlcpy(desc->identifier, target, idlen); 2052255570Strasz 2053255570Strasz retval = ctl_port_register(port, /*master_SC*/ 1); 2054255570Strasz if (retval != 0) { 2055268257Smav ctl_free_opts(&port->options); 2056268260Smav cfiscsi_target_release(ct); 2057255570Strasz free(port->port_devid, M_CFISCSI); 2058255570Strasz free(port->target_devid, M_CFISCSI); 2059255570Strasz req->status = CTL_LUN_ERROR; 2060268257Smav snprintf(req->error_str, sizeof(req->error_str), 2061268145Smav "ctl_frontend_register() failed with error %d", retval); 2062268260Smav return; 2063255570Strasz } 2064255570Straszdone: 2065255570Strasz ct->ct_state = CFISCSI_TARGET_STATE_ACTIVE; 2066255570Strasz req->status = CTL_LUN_OK; 2067255570Strasz memcpy(req->kern_args[0].kvalue, &port->targ_port, 2068255570Strasz sizeof(port->targ_port)); //XXX 2069268147Smav} 2070255570Strasz 2071255570Straszstatic void 2072255570Straszcfiscsi_ioctl_port_remove(struct ctl_req *req) 2073255570Strasz{ 2074268260Smav struct cfiscsi_target *ct; 2075268260Smav const char *target; 2076268260Smav ctl_options_t opts; 2077268260Smav 2078268260Smav ctl_init_opts(&opts, req->num_args, req->kern_args); 2079268257Smav target = ctl_get_opt(&opts, "cfiscsi_target"); 2080268257Smav if (target == NULL) { 2081268257Smav ctl_free_opts(&opts); 2082268257Smav req->status = CTL_LUN_ERROR; 2083268257Smav snprintf(req->error_str, sizeof(req->error_str), 2084268257Smav "Missing required argument"); 2085268257Smav return; 2086268257Smav } 2087268257Smav ct = cfiscsi_target_find(&cfiscsi_softc, target); 2088268257Smav if (ct == NULL) { 2089255570Strasz ctl_free_opts(&opts); 2090255570Strasz req->status = CTL_LUN_ERROR; 2091255570Strasz snprintf(req->error_str, sizeof(req->error_str), 2092268257Smav "can't find target \"%s\"", target); 2093268260Smav return; 2094255570Strasz } 2095255570Strasz if (ct->ct_state != CFISCSI_TARGET_STATE_ACTIVE) { 2096255570Strasz ctl_free_opts(&opts); 2097255570Strasz req->status = CTL_LUN_ERROR; 2098255570Strasz snprintf(req->error_str, sizeof(req->error_str), 2099255570Strasz "target \"%s\" is already dying", target); 2100255570Strasz return; 2101255570Strasz } 2102255570Strasz ctl_free_opts(&opts); 2103255570Strasz 2104255570Strasz ct->ct_state = CFISCSI_TARGET_STATE_DYING; 2105255570Strasz ctl_port_offline(&ct->ct_port); 2106255570Strasz cfiscsi_target_release(ct); 2107255570Strasz cfiscsi_target_release(ct); 2108255570Strasz} 2109255570Strasz 2110255570Straszstatic int 2111255570Straszcfiscsi_ioctl(struct cdev *dev, 2112255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td) 2113255570Strasz{ 2114255570Strasz struct ctl_iscsi *ci; 2115255570Strasz struct ctl_req *req; 2116255570Strasz 2117255570Strasz if (cmd == CTL_PORT_REQ) { 2118255570Strasz req = (struct ctl_req *)addr; 2119255570Strasz switch (req->reqtype) { 2120255570Strasz case CTL_REQ_CREATE: 2121255570Strasz cfiscsi_ioctl_port_create(req); 2122268257Smav break; 2123268257Smav case CTL_REQ_REMOVE: 2124268260Smav cfiscsi_ioctl_port_remove(req); 2125268260Smav break; 2126255570Strasz default: 2127268260Smav req->status = CTL_LUN_ERROR; 2128255570Strasz snprintf(req->error_str, sizeof(req->error_str), 2129255570Strasz "Unsupported request type %d", req->reqtype); 2130255570Strasz } 2131255570Strasz return (0); 2132255570Strasz } 2133255570Strasz 2134255570Strasz if (cmd != CTL_ISCSI) 2135255570Strasz return (ENOTTY); 2136255570Strasz 2137255570Strasz ci = (struct ctl_iscsi *)addr; 2138255570Strasz switch (ci->type) { 2139255570Strasz case CTL_ISCSI_HANDOFF: 2140255570Strasz cfiscsi_ioctl_handoff(ci); 2141255570Strasz break; 2142255570Strasz case CTL_ISCSI_LIST: 2143255570Strasz cfiscsi_ioctl_list(ci); 2144255570Strasz break; 2145255570Strasz case CTL_ISCSI_TERMINATE: 2146255570Strasz cfiscsi_ioctl_terminate(ci); 2147268145Smav break; 2148268145Smav case CTL_ISCSI_LOGOUT: 2149268145Smav cfiscsi_ioctl_logout(ci); 2150268145Smav break; 2151268145Smav#ifdef ICL_KERNEL_PROXY 2152268145Smav case CTL_ISCSI_LISTEN: 2153268145Smav cfiscsi_ioctl_listen(ci); 2154255570Strasz break; 2155255570Strasz case CTL_ISCSI_ACCEPT: 2156255570Strasz cfiscsi_ioctl_accept(ci); 2157255570Strasz break; 2158255570Strasz case CTL_ISCSI_SEND: 2159255570Strasz cfiscsi_ioctl_send(ci); 2160255570Strasz break; 2161255570Strasz case CTL_ISCSI_RECEIVE: 2162255570Strasz cfiscsi_ioctl_receive(ci); 2163255570Strasz break; 2164255570Strasz#else 2165255570Strasz case CTL_ISCSI_LISTEN: 2166255570Strasz case CTL_ISCSI_ACCEPT: 2167255570Strasz case CTL_ISCSI_SEND: 2168255570Strasz case CTL_ISCSI_RECEIVE: 2169255570Strasz ci->status = CTL_ISCSI_ERROR; 2170255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 2171255570Strasz "%s: CTL compiled without ICL_KERNEL_PROXY", 2172255570Strasz __func__); 2173268257Smav break; 2174268257Smav#endif /* !ICL_KERNEL_PROXY */ 2175268257Smav default: 2176268257Smav ci->status = CTL_ISCSI_ERROR; 2177268257Smav snprintf(ci->error_str, sizeof(ci->error_str), 2178255570Strasz "%s: invalid iSCSI request type %d", __func__, ci->type); 2179268257Smav break; 2180268257Smav } 2181268257Smav 2182268257Smav return (0); 2183268257Smav} 2184268257Smav 2185268257Smavstatic void 2186268257Smavcfiscsi_target_hold(struct cfiscsi_target *ct) 2187268257Smav{ 2188268257Smav 2189268257Smav refcount_acquire(&ct->ct_refcount); 2190268257Smav} 2191268257Smav 2192268257Smavstatic void 2193268257Smavcfiscsi_target_release(struct cfiscsi_target *ct) 2194268257Smav{ 2195268257Smav struct cfiscsi_softc *softc; 2196268257Smav 2197268257Smav softc = ct->ct_softc; 2198268257Smav mtx_lock(&softc->lock); 2199255570Strasz if (refcount_release(&ct->ct_refcount)) { 2200255570Strasz TAILQ_REMOVE(&softc->targets, ct, ct_next); 2201268260Smav mtx_unlock(&softc->lock); 2202255570Strasz if (ct->ct_state != CFISCSI_TARGET_STATE_INVALID) { 2203268260Smav ct->ct_state = CFISCSI_TARGET_STATE_INVALID; 2204268260Smav if (ctl_port_deregister(&ct->ct_port) != 0) 2205268257Smav printf("%s: ctl_port_deregister() failed\n", 2206268260Smav __func__); 2207268260Smav } 2208268260Smav free(ct, M_CFISCSI); 2209268260Smav 2210268260Smav return; 2211268260Smav } 2212268260Smav mtx_unlock(&softc->lock); 2213268260Smav} 2214268260Smav 2215268260Smavstatic struct cfiscsi_target * 2216268260Smavcfiscsi_target_find(struct cfiscsi_softc *softc, const char *name) 2217268257Smav{ 2218255570Strasz struct cfiscsi_target *ct; 2219255570Strasz 2220268257Smav mtx_lock(&softc->lock); 2221255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2222268260Smav if (strcmp(name, ct->ct_name) != 0 || 2223268260Smav ct->ct_state != CFISCSI_TARGET_STATE_ACTIVE) 2224268257Smav continue; 2225268260Smav cfiscsi_target_hold(ct); 2226268260Smav mtx_unlock(&softc->lock); 2227255570Strasz return (ct); 2228268257Smav } 2229268257Smav mtx_unlock(&softc->lock); 2230268257Smav 2231268260Smav return (NULL); 2232268260Smav} 2233268257Smav 2234268260Smavstatic struct cfiscsi_target * 2235268260Smavcfiscsi_target_find_or_create(struct cfiscsi_softc *softc, const char *name, 2236268257Smav const char *alias) 2237255570Strasz{ 2238255570Strasz struct cfiscsi_target *ct, *newct; 2239268550Smav int i; 2240255570Strasz 2241255570Strasz if (name[0] == '\0' || strlen(name) >= CTL_ISCSI_NAME_LEN) 2242255570Strasz return (NULL); 2243255570Strasz 2244255570Strasz newct = malloc(sizeof(*newct), M_CFISCSI, M_WAITOK | M_ZERO); 2245255570Strasz 2246255570Strasz mtx_lock(&softc->lock); 2247255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2248255570Strasz if (strcmp(name, ct->ct_name) != 0 || 2249255570Strasz ct->ct_state == CFISCSI_TARGET_STATE_INVALID) 2250255570Strasz continue; 2251255570Strasz cfiscsi_target_hold(ct); 2252255570Strasz mtx_unlock(&softc->lock); 2253255570Strasz free(newct, M_CFISCSI); 2254255570Strasz return (ct); 2255255570Strasz } 2256255570Strasz 2257255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) 2258255570Strasz newct->ct_luns[i] = UINT32_MAX; 2259255570Strasz 2260255570Strasz strlcpy(newct->ct_name, name, sizeof(newct->ct_name)); 2261255570Strasz if (alias != NULL) 2262255570Strasz strlcpy(newct->ct_alias, alias, sizeof(newct->ct_alias)); 2263255570Strasz refcount_init(&newct->ct_refcount, 1); 2264255570Strasz newct->ct_softc = softc; 2265255570Strasz TAILQ_INSERT_TAIL(&softc->targets, newct, ct_next); 2266255570Strasz mtx_unlock(&softc->lock); 2267255570Strasz 2268255570Strasz return (newct); 2269255570Strasz} 2270255570Strasz 2271255570Strasz/* 2272255570Strasz * Takes LUN from the target space and returns LUN from the CTL space. 2273255570Strasz */ 2274255570Straszstatic uint32_t 2275255570Straszcfiscsi_lun_map(void *arg, uint32_t lun) 2276255570Strasz{ 2277255570Strasz struct cfiscsi_target *ct = arg; 2278255570Strasz 2279255570Strasz if (lun >= CTL_MAX_LUNS) { 2280255570Strasz CFISCSI_DEBUG("requested lun number %d is higher " 2281255570Strasz "than maximum %d", lun, CTL_MAX_LUNS - 1); 2282255570Strasz return (UINT32_MAX); 2283255570Strasz } 2284255570Strasz return (ct->ct_luns[lun]); 2285255570Strasz} 2286255570Strasz 2287255570Straszstatic int 2288255570Straszcfiscsi_target_set_lun(struct cfiscsi_target *ct, 2289255570Strasz unsigned long lun_id, unsigned long ctl_lun_id) 2290255570Strasz{ 2291255570Strasz 2292255570Strasz if (lun_id >= CTL_MAX_LUNS) { 2293255570Strasz CFISCSI_WARN("requested lun number %ld is higher " 2294255570Strasz "than maximum %d", lun_id, CTL_MAX_LUNS - 1); 2295255570Strasz return (-1); 2296255570Strasz } 2297255570Strasz 2298255570Strasz if (ct->ct_luns[lun_id] < CTL_MAX_LUNS) { 2299255570Strasz /* 2300255570Strasz * CTL calls cfiscsi_lun_enable() twice for each LUN - once 2301255570Strasz * when the LUN is created, and a second time just before 2302255570Strasz * the port is brought online; don't emit warnings 2303255570Strasz * for that case. 2304255570Strasz */ 2305255570Strasz if (ct->ct_luns[lun_id] == ctl_lun_id) 2306255570Strasz return (0); 2307255570Strasz CFISCSI_WARN("lun %ld already allocated", lun_id); 2308255570Strasz return (-1); 2309255570Strasz } 2310255570Strasz 2311255570Strasz#if 0 2312255570Strasz CFISCSI_DEBUG("adding mapping for lun %ld, target %s " 2313255570Strasz "to ctl lun %ld", lun_id, ct->ct_name, ctl_lun_id); 2314255570Strasz#endif 2315255570Strasz 2316255570Strasz ct->ct_luns[lun_id] = ctl_lun_id; 2317255570Strasz 2318255570Strasz return (0); 2319255570Strasz} 2320255570Strasz 2321255570Straszstatic int 2322255570Straszcfiscsi_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 2323255570Strasz{ 2324255570Strasz struct cfiscsi_softc *softc; 2325255570Strasz struct cfiscsi_target *ct; 2326255570Strasz const char *target = NULL; 2327255570Strasz const char *lun = NULL; 2328255570Strasz unsigned long tmp; 2329255570Strasz 2330255570Strasz ct = (struct cfiscsi_target *)arg; 2331255570Strasz softc = ct->ct_softc; 2332255570Strasz 2333255570Strasz target = ctl_get_opt(&control_softc->ctl_luns[lun_id]->be_lun->options, 2334255570Strasz "cfiscsi_target"); 2335255570Strasz lun = ctl_get_opt(&control_softc->ctl_luns[lun_id]->be_lun->options, 2336255570Strasz "cfiscsi_lun"); 2337255570Strasz 2338255570Strasz if (target == NULL && lun == NULL) 2339255570Strasz return (0); 2340255570Strasz 2341255570Strasz if (target == NULL || lun == NULL) { 2342255570Strasz CFISCSI_WARN("lun added with cfiscsi_target, but without " 2343255570Strasz "cfiscsi_lun, or the other way around; ignoring"); 2344255570Strasz return (0); 2345255570Strasz } 2346255570Strasz 2347255570Strasz if (strcmp(target, ct->ct_name) != 0) 2348255570Strasz return (0); 2349255570Strasz 2350255570Strasz tmp = strtoul(lun, NULL, 10); 2351255570Strasz cfiscsi_target_set_lun(ct, tmp, lun_id); 2352255570Strasz return (0); 2353255570Strasz} 2354255570Strasz 2355255570Straszstatic int 2356255570Straszcfiscsi_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 2357255570Strasz{ 2358255570Strasz struct cfiscsi_softc *softc; 2359255570Strasz struct cfiscsi_target *ct; 2360255570Strasz int i; 2361255570Strasz 2362255570Strasz ct = (struct cfiscsi_target *)arg; 2363255570Strasz softc = ct->ct_softc; 2364255570Strasz 2365255570Strasz mtx_lock(&softc->lock); 2366255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) { 2367255570Strasz if (ct->ct_luns[i] != lun_id) 2368255570Strasz continue; 2369255570Strasz ct->ct_luns[i] = UINT32_MAX; 2370255570Strasz break; 2371255570Strasz } 2372255570Strasz mtx_unlock(&softc->lock); 2373255570Strasz return (0); 2374255570Strasz} 2375255570Strasz 2376255570Straszstatic void 2377255570Straszcfiscsi_datamove_in(union ctl_io *io) 2378255570Strasz{ 2379255570Strasz struct cfiscsi_session *cs; 2380255570Strasz struct icl_pdu *request, *response; 2381255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 2382255570Strasz struct iscsi_bhs_data_in *bhsdi; 2383255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2384255570Strasz size_t len, expected_len, sg_len, buffer_offset; 2385255570Strasz const char *sg_addr; 2386255570Strasz int ctl_sg_count, error, i; 2387255570Strasz 2388255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2389255570Strasz cs = PDU_SESSION(request); 2390255570Strasz 2391255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2392255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2393255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2394255570Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2395255570Strasz 2396255570Strasz if (io->scsiio.kern_sg_entries > 0) { 2397255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2398255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 2399255570Strasz } else { 2400255570Strasz ctl_sglist = &ctl_sg_entry; 2401255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 2402255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 2403255570Strasz ctl_sg_count = 1; 2404255570Strasz } 2405255570Strasz 2406255570Strasz /* 2407268143Smav * This is the total amount of data to be transferred within the current 2408268143Smav * SCSI command. We need to record it so that we can properly report 2409268143Smav * underflow/underflow. 2410268143Smav */ 2411268143Smav PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2412268143Smav 2413255570Strasz /* 2414255570Strasz * This is the offset within the current SCSI command; for the first 2415255570Strasz * call to cfiscsi_datamove() it will be 0, and for subsequent ones 2416255570Strasz * it will be the sum of lengths of previous ones. 2417255570Strasz */ 2418255570Strasz buffer_offset = io->scsiio.kern_rel_offset; 2419255570Strasz 2420255570Strasz /* 2421255570Strasz * This is the transfer length expected by the initiator. In theory, 2422255570Strasz * it could be different from the correct amount of data from the SCSI 2423255570Strasz * point of view, even if that doesn't make any sense. 2424255570Strasz */ 2425255570Strasz expected_len = ntohl(bhssc->bhssc_expected_data_transfer_length); 2426255570Strasz#if 0 2427255570Strasz if (expected_len != io->scsiio.kern_total_len) { 2428255570Strasz CFISCSI_SESSION_DEBUG(cs, "expected transfer length %zd, " 2429255570Strasz "actual length %zd", expected_len, 2430255570Strasz (size_t)io->scsiio.kern_total_len); 2431264523Smav } 2432255570Strasz#endif 2433255570Strasz 2434255570Strasz if (buffer_offset >= expected_len) { 2435255570Strasz#if 0 2436255570Strasz CFISCSI_SESSION_DEBUG(cs, "buffer_offset = %zd, " 2437255570Strasz "already sent the expected len", buffer_offset); 2438255570Strasz#endif 2439255570Strasz io->scsiio.be_move_done(io); 2440255570Strasz return; 2441255570Strasz } 2442255570Strasz 2443255570Strasz i = 0; 2444255570Strasz sg_addr = NULL; 2445255570Strasz sg_len = 0; 2446255570Strasz response = NULL; 2447255570Strasz bhsdi = NULL; 2448255570Strasz for (;;) { 2449255570Strasz if (response == NULL) { 2450255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2451264523Smav if (response == NULL) { 2452255570Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2453264523Smav "allocate memory; dropping connection"); 2454255570Strasz ctl_set_busy(&io->scsiio); 2455255570Strasz io->scsiio.be_move_done(io); 2456255570Strasz cfiscsi_session_terminate(cs); 2457255570Strasz return; 2458255570Strasz } 2459255570Strasz bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 2460255570Strasz bhsdi->bhsdi_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_IN; 2461256065Strasz bhsdi->bhsdi_initiator_task_tag = 2462255570Strasz bhssc->bhssc_initiator_task_tag; 2463255570Strasz bhsdi->bhsdi_datasn = htonl(PDU_EXPDATASN(request)); 2464255570Strasz PDU_EXPDATASN(request)++; 2465255570Strasz bhsdi->bhsdi_buffer_offset = htonl(buffer_offset); 2466255570Strasz } 2467255570Strasz 2468265490Strasz KASSERT(i < ctl_sg_count, ("i >= ctl_sg_count")); 2469265490Strasz if (sg_len == 0) { 2470255824Strasz sg_addr = ctl_sglist[i].addr; 2471255570Strasz sg_len = ctl_sglist[i].len; 2472255570Strasz KASSERT(sg_len > 0, ("sg_len <= 0")); 2473255570Strasz } 2474255570Strasz 2475255570Strasz len = sg_len; 2476255570Strasz 2477255570Strasz /* 2478255570Strasz * Truncate to maximum data segment length. 2479255570Strasz */ 2480255570Strasz KASSERT(response->ip_data_len < cs->cs_max_data_segment_length, 2481255570Strasz ("ip_data_len %zd >= max_data_segment_length %zd", 2482255570Strasz response->ip_data_len, cs->cs_max_data_segment_length)); 2483255570Strasz if (response->ip_data_len + len > 2484255570Strasz cs->cs_max_data_segment_length) { 2485255570Strasz len = cs->cs_max_data_segment_length - 2486255570Strasz response->ip_data_len; 2487255570Strasz KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2488255570Strasz len, sg_len)); 2489255570Strasz } 2490255570Strasz 2491265490Strasz /* 2492265490Strasz * Truncate to expected data transfer length. 2493255570Strasz */ 2494255570Strasz KASSERT(buffer_offset + response->ip_data_len < expected_len, 2495255570Strasz ("buffer_offset %zd + ip_data_len %zd >= expected_len %zd", 2496255570Strasz buffer_offset, response->ip_data_len, expected_len)); 2497256065Strasz if (buffer_offset + response->ip_data_len + len > expected_len) { 2498265490Strasz CFISCSI_SESSION_DEBUG(cs, "truncating from %zd " 2499265490Strasz "to expected data transfer length %zd", 2500265640Smav buffer_offset + response->ip_data_len + len, expected_len); 2501256065Strasz len = expected_len - (buffer_offset + response->ip_data_len); 2502265490Strasz KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2503255570Strasz len, sg_len)); 2504265490Strasz } 2505265490Strasz 2506265490Strasz error = icl_pdu_append_data(response, sg_addr, len, M_NOWAIT); 2507265490Strasz if (error != 0) { 2508265490Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2509265490Strasz "allocate memory; dropping connection"); 2510265490Strasz icl_pdu_free(response); 2511265640Smav ctl_set_busy(&io->scsiio); 2512265640Smav io->scsiio.be_move_done(io); 2513265640Smav cfiscsi_session_terminate(cs); 2514265640Smav return; 2515265640Smav } 2516265490Strasz sg_addr += len; 2517265490Strasz sg_len -= len; 2518265490Strasz 2519265490Strasz KASSERT(buffer_offset + response->ip_data_len <= expected_len, 2520265490Strasz ("buffer_offset %zd + ip_data_len %zd > expected_len %zd", 2521265490Strasz buffer_offset, response->ip_data_len, expected_len)); 2522265490Strasz if (buffer_offset + response->ip_data_len == expected_len) { 2523265490Strasz /* 2524265490Strasz * Already have the amount of data the initiator wanted. 2525265490Strasz */ 2526265490Strasz break; 2527256065Strasz } 2528265490Strasz 2529265490Strasz if (sg_len == 0) { 2530256065Strasz /* 2531256065Strasz * End of scatter-gather segment; 2532256065Strasz * proceed to the next one... 2533256065Strasz */ 2534256065Strasz if (i == ctl_sg_count - 1) { 2535255570Strasz /* 2536255824Strasz * ... unless this was the last one. 2537255824Strasz */ 2538256163Strasz break; 2539256163Strasz } 2540255824Strasz i++; 2541255824Strasz } 2542255824Strasz 2543256065Strasz if (response->ip_data_len == cs->cs_max_data_segment_length) { 2544256065Strasz /* 2545256065Strasz * Can't stuff more data into the current PDU; 2546256065Strasz * queue it. Note that's not enough to check 2547256065Strasz * for kern_data_resid == 0 instead; there 2548256065Strasz * may be several Data-In PDUs for the final 2549265490Strasz * call to cfiscsi_datamove(), and we want 2550256065Strasz * to set the F flag only on the last of them. 2551255570Strasz */ 2552265490Strasz buffer_offset += response->ip_data_len; 2553265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2554265490Strasz buffer_offset == expected_len) 2555265490Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2556265490Strasz cfiscsi_pdu_queue(response); 2557256065Strasz response = NULL; 2558255570Strasz bhsdi = NULL; 2559265490Strasz } 2560265490Strasz } 2561265490Strasz if (response != NULL) { 2562265490Strasz buffer_offset += response->ip_data_len; 2563265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2564265490Strasz buffer_offset == expected_len) 2565265640Smav bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2566265490Strasz KASSERT(response->ip_data_len > 0, ("sending empty Data-In")); 2567265490Strasz cfiscsi_pdu_queue(response); 2568265640Smav } 2569265490Strasz 2570256065Strasz io->scsiio.be_move_done(io); 2571265640Smav} 2572265640Smav 2573265640Smavstatic void 2574265490Straszcfiscsi_datamove_out(union ctl_io *io) 2575265490Strasz{ 2576265490Strasz struct cfiscsi_session *cs; 2577265490Strasz struct icl_pdu *request, *response; 2578265490Strasz const struct iscsi_bhs_scsi_command *bhssc; 2579265640Smav struct iscsi_bhs_r2t *bhsr2t; 2580265640Smav struct cfiscsi_data_wait *cdw; 2581265490Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2582265490Strasz uint32_t expected_len, r2t_off, r2t_len; 2583265490Strasz uint32_t target_transfer_tag; 2584265490Strasz bool done; 2585265490Strasz 2586265640Smav request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2587265640Smav cs = PDU_SESSION(request); 2588265490Strasz 2589265490Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2590265490Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2591256065Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2592256065Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2593256065Strasz 2594256065Strasz /* 2595256163Strasz * We need to record it so that we can properly report 2596256163Strasz * underflow/underflow. 2597256065Strasz */ 2598256065Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2599256065Strasz 2600265490Strasz /* 2601265490Strasz * Report write underflow as error since CTL and backends don't 2602256065Strasz * really support it, and SCSI does not tell how to do it right. 2603265640Smav */ 2604265640Smav expected_len = ntohl(bhssc->bhssc_expected_data_transfer_length); 2605265640Smav if (io->scsiio.kern_rel_offset + io->scsiio.kern_data_len > 2606265640Smav expected_len) { 2607256065Strasz io->scsiio.io_hdr.port_status = 43; 2608265490Strasz io->scsiio.be_move_done(io); 2609265490Strasz return; 2610265490Strasz } 2611265490Strasz 2612265490Strasz target_transfer_tag = 2613265490Strasz atomic_fetchadd_32(&cs->cs_target_transfer_tag, 1); 2614265490Strasz 2615256065Strasz#if 0 2616256065Strasz CFISCSI_SESSION_DEBUG(cs, "expecting Data-Out with initiator " 2617256065Strasz "task tag 0x%x, target transfer tag 0x%x", 2618256065Strasz bhssc->bhssc_initiator_task_tag, target_transfer_tag); 2619255570Strasz#endif 2620256065Strasz cdw = uma_zalloc(cfiscsi_data_wait_zone, M_NOWAIT | M_ZERO); 2621255570Strasz if (cdw == NULL) { 2622256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2623255570Strasz "allocate memory; dropping connection"); 2624256065Strasz ctl_set_busy(&io->scsiio); 2625255570Strasz io->scsiio.be_move_done(io); 2626256065Strasz cfiscsi_session_terminate(cs); 2627256065Strasz return; 2628256065Strasz } 2629256065Strasz cdw->cdw_ctl_io = io; 2630256065Strasz cdw->cdw_target_transfer_tag = target_transfer_tag; 2631256195Strasz cdw->cdw_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2632256065Strasz cdw->cdw_r2t_end = io->scsiio.kern_data_len; 2633256065Strasz 2634256065Strasz /* Set initial data pointer for the CDW respecting ext_data_filled. */ 2635256065Strasz if (io->scsiio.kern_sg_entries > 0) { 2636265640Smav ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2637265490Strasz } else { 2638265490Strasz ctl_sglist = &ctl_sg_entry; 2639255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 2640255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 2641256065Strasz } 2642256065Strasz cdw->cdw_sg_index = 0; 2643255570Strasz cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 2644256065Strasz cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 2645256065Strasz r2t_off = io->scsiio.ext_data_filled; 2646265640Smav while (r2t_off > 0) { 2647265490Strasz if (r2t_off >= cdw->cdw_sg_len) { 2648265490Strasz r2t_off -= cdw->cdw_sg_len; 2649256065Strasz cdw->cdw_sg_index++; 2650256065Strasz cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 2651256065Strasz cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 2652256065Strasz continue; 2653255570Strasz } 2654256065Strasz cdw->cdw_sg_addr += r2t_off; 2655256065Strasz cdw->cdw_sg_len -= r2t_off; 2656255570Strasz r2t_off = 0; 2657256065Strasz } 2658256065Strasz 2659256065Strasz if (cs->cs_immediate_data && 2660256065Strasz io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled < 2661256065Strasz icl_pdu_data_segment_length(request)) { 2662256065Strasz done = cfiscsi_handle_data_segment(request, cdw); 2663256065Strasz if (done) { 2664256065Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2665256065Strasz io->scsiio.be_move_done(io); 2666256065Strasz return; 2667256065Strasz } 2668256065Strasz } 2669256065Strasz 2670256065Strasz r2t_off = io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled; 2671256065Strasz r2t_len = MIN(io->scsiio.kern_data_len - io->scsiio.ext_data_filled, 2672256065Strasz cs->cs_max_burst_length); 2673256065Strasz cdw->cdw_r2t_end = io->scsiio.ext_data_filled + r2t_len; 2674256065Strasz 2675256065Strasz CFISCSI_SESSION_LOCK(cs); 2676256065Strasz TAILQ_INSERT_TAIL(&cs->cs_waiting_for_data_out, cdw, cdw_next); 2677256065Strasz CFISCSI_SESSION_UNLOCK(cs); 2678256065Strasz 2679256065Strasz /* 2680256065Strasz * XXX: We should limit the number of outstanding R2T PDUs 2681256065Strasz * per task to MaxOutstandingR2T. 2682265640Smav */ 2683265640Smav response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2684265640Smav if (response == NULL) { 2685265640Smav CFISCSI_SESSION_WARN(cs, "failed to " 2686265640Smav "allocate memory; dropping connection"); 2687265497Strasz ctl_set_busy(&io->scsiio); 2688265497Strasz io->scsiio.be_move_done(io); 2689256065Strasz cfiscsi_session_terminate(cs); 2690255570Strasz return; 2691256065Strasz } 2692256065Strasz bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 2693256065Strasz bhsr2t->bhsr2t_opcode = ISCSI_BHS_OPCODE_R2T; 2694255570Strasz bhsr2t->bhsr2t_flags = 0x80; 2695256065Strasz bhsr2t->bhsr2t_lun = bhssc->bhssc_lun; 2696256065Strasz bhsr2t->bhsr2t_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2697256065Strasz bhsr2t->bhsr2t_target_transfer_tag = target_transfer_tag; 2698256065Strasz /* 2699256163Strasz * XXX: Here we assume that cfiscsi_datamove() won't ever 2700256163Strasz * be running concurrently on several CPUs for a given 2701256065Strasz * command. 2702256163Strasz */ 2703256065Strasz bhsr2t->bhsr2t_r2tsn = htonl(PDU_R2TSN(request)); 2704256065Strasz PDU_R2TSN(request)++; 2705265489Strasz /* 2706256065Strasz * This is the offset within the current SCSI command; 2707256065Strasz * i.e. for the first call of datamove(), it will be 0, 2708268141Smav * and for subsequent ones it will be the sum of lengths 2709268141Smav * of previous ones. 2710256065Strasz * 2711256065Strasz * The ext_data_filled is to account for unsolicited 2712256065Strasz * (immediate) data that might have already arrived. 2713256065Strasz */ 2714256065Strasz bhsr2t->bhsr2t_buffer_offset = htonl(r2t_off); 2715255837Strasz /* 2716256065Strasz * This is the total length (sum of S/G lengths) this call 2717255570Strasz * to cfiscsi_datamove() is supposed to handle, limited by 2718256065Strasz * MaxBurstLength. 2719256065Strasz */ 2720256065Strasz bhsr2t->bhsr2t_desired_data_transfer_length = htonl(r2t_len); 2721255570Strasz cfiscsi_pdu_queue(response); 2722256065Strasz} 2723256065Strasz 2724256065Straszstatic void 2725256065Straszcfiscsi_datamove(union ctl_io *io) 2726256065Strasz{ 2727256065Strasz 2728256065Strasz if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 2729256065Strasz cfiscsi_datamove_in(io); 2730256163Strasz else { 2731256163Strasz /* We hadn't received anything during this datamove yet. */ 2732256065Strasz io->scsiio.ext_data_filled = 0; 2733256163Strasz cfiscsi_datamove_out(io); 2734255570Strasz } 2735256065Strasz} 2736256065Strasz 2737256065Straszstatic void 2738256065Straszcfiscsi_scsi_command_done(union ctl_io *io) 2739256065Strasz{ 2740265489Strasz struct icl_pdu *request, *response; 2741256065Strasz struct iscsi_bhs_scsi_command *bhssc; 2742256065Strasz struct iscsi_bhs_scsi_response *bhssr; 2743256065Strasz#ifdef DIAGNOSTIC 2744256065Strasz struct cfiscsi_data_wait *cdw; 2745256065Strasz#endif 2746256065Strasz struct cfiscsi_session *cs; 2747256065Strasz uint16_t sense_length; 2748256065Strasz 2749256065Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2750256065Strasz cs = PDU_SESSION(request); 2751256065Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2752256065Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2753256065Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2754256065Strasz ("replying to wrong opcode 0x%x", bhssc->bhssc_opcode)); 2755256065Strasz 2756256065Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 2757256065Strasz // bhssc->bhssc_initiator_task_tag); 2758256065Strasz 2759256065Strasz#ifdef DIAGNOSTIC 2760256065Strasz CFISCSI_SESSION_LOCK(cs); 2761256065Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) 2762256065Strasz KASSERT(bhssc->bhssc_initiator_task_tag != 2763256065Strasz cdw->cdw_initiator_task_tag, ("dangling cdw")); 2764256065Strasz CFISCSI_SESSION_UNLOCK(cs); 2765256065Strasz#endif 2766256065Strasz 2767256065Strasz /* 2768255570Strasz * Do not return status for aborted commands. 2769255570Strasz * There are exceptions, but none supported by CTL yet. 2770255570Strasz */ 2771256065Strasz if ((io->io_hdr.flags & CTL_FLAG_ABORT) && 2772256065Strasz (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) { 2773256065Strasz ctl_free_io(io); 2774256065Strasz icl_pdu_free(request); 2775256065Strasz return; 2776256065Strasz } 2777256065Strasz 2778256065Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2779256065Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 2780256065Strasz bhssr->bhssr_opcode = ISCSI_BHS_OPCODE_SCSI_RESPONSE; 2781255570Strasz bhssr->bhssr_flags = 0x80; 2782255570Strasz /* 2783255570Strasz * XXX: We don't deal with bidirectional under/overflows; 2784255570Strasz * does anything actually support those? 2785255570Strasz */ 2786255570Strasz if (PDU_TOTAL_TRANSFER_LEN(request) < 2787255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2788255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_UNDERFLOW; 2789255570Strasz bhssr->bhssr_residual_count = 2790255570Strasz htonl(ntohl(bhssc->bhssc_expected_data_transfer_length) - 2791255570Strasz PDU_TOTAL_TRANSFER_LEN(request)); 2792255570Strasz //CFISCSI_SESSION_DEBUG(cs, "underflow; residual count %d", 2793255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2794255570Strasz } else if (PDU_TOTAL_TRANSFER_LEN(request) > 2795255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2796255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_OVERFLOW; 2797255570Strasz bhssr->bhssr_residual_count = 2798255570Strasz htonl(PDU_TOTAL_TRANSFER_LEN(request) - 2799255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)); 2800255570Strasz //CFISCSI_SESSION_DEBUG(cs, "overflow; residual count %d", 2801255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2802255570Strasz } 2803255570Strasz bhssr->bhssr_response = BHSSR_RESPONSE_COMMAND_COMPLETED; 2804255570Strasz bhssr->bhssr_status = io->scsiio.scsi_status; 2805255570Strasz bhssr->bhssr_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2806255570Strasz bhssr->bhssr_expdatasn = htonl(PDU_EXPDATASN(request)); 2807255570Strasz 2808255570Strasz if (io->scsiio.sense_len > 0) { 2809255570Strasz#if 0 2810268554Smav CFISCSI_SESSION_DEBUG(cs, "returning %d bytes of sense data", 2811268554Smav io->scsiio.sense_len); 2812268554Smav#endif 2813268554Smav sense_length = htons(io->scsiio.sense_len); 2814268554Smav icl_pdu_append_data(response, 2815268554Smav &sense_length, sizeof(sense_length), M_WAITOK); 2816268554Smav icl_pdu_append_data(response, 2817268554Smav &io->scsiio.sense_data, io->scsiio.sense_len, M_WAITOK); 2818268554Smav } 2819268554Smav 2820255570Strasz ctl_free_io(io); 2821255570Strasz icl_pdu_free(request); 2822255570Strasz cfiscsi_pdu_queue(response); 2823255570Strasz} 2824255570Strasz 2825255570Straszstatic void 2826255570Straszcfiscsi_task_management_done(union ctl_io *io) 2827255570Strasz{ 2828255570Strasz struct icl_pdu *request, *response; 2829255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 2830255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 2831255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 2832255570Strasz struct cfiscsi_session *cs; 2833255570Strasz 2834255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2835255570Strasz cs = PDU_SESSION(request); 2836255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2837255570Strasz KASSERT((bhstmr->bhstmr_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2838255570Strasz ISCSI_BHS_OPCODE_TASK_REQUEST, 2839255570Strasz ("replying to wrong opcode 0x%x", bhstmr->bhstmr_opcode)); 2840255570Strasz 2841255570Strasz#if 0 2842255570Strasz CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x; referenced task tag 0x%x", 2843255570Strasz bhstmr->bhstmr_initiator_task_tag, 2844255570Strasz bhstmr->bhstmr_referenced_task_tag); 2845255570Strasz#endif 2846255570Strasz 2847255570Strasz if ((bhstmr->bhstmr_function & ~0x80) == 2848255570Strasz BHSTMR_FUNCTION_ABORT_TASK) { 2849255570Strasz /* 2850255570Strasz * Make sure we no longer wait for Data-Out for this command. 2851255570Strasz */ 2852255570Strasz CFISCSI_SESSION_LOCK(cs); 2853255570Strasz TAILQ_FOREACH_SAFE(cdw, 2854255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 2855255570Strasz if (bhstmr->bhstmr_referenced_task_tag != 2856255570Strasz cdw->cdw_initiator_task_tag) 2857255570Strasz continue; 2858255570Strasz 2859255570Strasz#if 0 2860255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task " 2861255570Strasz "tag 0x%x", bhstmr->bhstmr_initiator_task_tag); 2862255570Strasz#endif 2863255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, 2864255570Strasz cdw, cdw_next); 2865255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 2866255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2867255570Strasz } 2868255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2869255570Strasz } 2870255570Strasz 2871255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2872255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 2873255570Strasz response->ip_bhs; 2874255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 2875255570Strasz bhstmr2->bhstmr_flags = 0x80; 2876255570Strasz if (io->io_hdr.status == CTL_SUCCESS) { 2877255570Strasz bhstmr2->bhstmr_response = BHSTMR_RESPONSE_FUNCTION_COMPLETE; 2878255570Strasz } else { 2879255570Strasz /* 2880255570Strasz * XXX: How to figure out what exactly went wrong? iSCSI spec 2881255570Strasz * expects us to provide detailed error, e.g. "Task does 2882255570Strasz * not exist" or "LUN does not exist". 2883255570Strasz */ 2884255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED"); 2885255570Strasz bhstmr2->bhstmr_response = 2886255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 2887255570Strasz } 2888255570Strasz bhstmr2->bhstmr_initiator_task_tag = bhstmr->bhstmr_initiator_task_tag; 2889255570Strasz 2890255570Strasz ctl_free_io(io); 2891255570Strasz icl_pdu_free(request); 2892255570Strasz cfiscsi_pdu_queue(response); 2893255570Strasz} 2894255570Strasz 2895255570Straszstatic void 2896255570Straszcfiscsi_done(union ctl_io *io) 2897255570Strasz{ 2898255570Strasz struct icl_pdu *request; 2899255570Strasz struct cfiscsi_session *cs; 2900255570Strasz 2901255570Strasz KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 2902255570Strasz ("invalid CTL status %#x", io->io_hdr.status)); 2903255570Strasz 2904255570Strasz if (io->io_hdr.io_type == CTL_IO_TASK && 2905255570Strasz io->taskio.task_action == CTL_TASK_I_T_NEXUS_RESET) { 2906255570Strasz /* 2907255570Strasz * Implicit task termination has just completed; nothing to do. 2908255570Strasz */ 2909255570Strasz cs = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2910255570Strasz cs->cs_tasks_aborted = true; 2911255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 2912255570Strasz wakeup(__DEVOLATILE(void *, &cs->cs_outstanding_ctl_pdus)); 2913255570Strasz ctl_free_io(io); 2914255570Strasz return; 2915255570Strasz } 2916255570Strasz 2917255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2918255570Strasz cs = PDU_SESSION(request); 2919255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 2920255570Strasz 2921255570Strasz switch (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) { 2922255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 2923255570Strasz cfiscsi_scsi_command_done(io); 2924255570Strasz break; 2925255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 2926255570Strasz cfiscsi_task_management_done(io); 2927255570Strasz break; 2928255570Strasz default: 2929255570Strasz panic("cfiscsi_done called with wrong opcode 0x%x", 2930255570Strasz request->ip_bhs->bhs_opcode); 2931255570Strasz } 2932255570Strasz} 2933255570Strasz