ctl_frontend_iscsi.c revision 275494
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 275494 2014-12-05 07:24:17Z 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 275494 2014-12-05 07:24:17Z 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 70270891Strasz#include <dev/iscsi/icl.h> 71270891Strasz#include <dev/iscsi/iscsi_proto.h> 72270891Strasz#include <cam/ctl/ctl_frontend_iscsi.h> 73255570Strasz 74255570Strasz#ifdef ICL_KERNEL_PROXY 75255570Strasz#include <sys/socketvar.h> 76255570Strasz#endif 77255570Strasz 78265508Strasz#ifdef ICL_KERNEL_PROXY 79265508StraszFEATURE(cfiscsi_kernel_proxy, "iSCSI target built with ICL_KERNEL_PROXY"); 80265508Strasz#endif 81265508Strasz 82255570Straszstatic MALLOC_DEFINE(M_CFISCSI, "cfiscsi", "Memory used for CTL iSCSI frontend"); 83255570Straszstatic uma_zone_t cfiscsi_data_wait_zone; 84255570Strasz 85255570StraszSYSCTL_NODE(_kern_cam_ctl, OID_AUTO, iscsi, CTLFLAG_RD, 0, 86255570Strasz "CAM Target Layer iSCSI Frontend"); 87275310Straszstatic int debug = 1; 88255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.debug", &debug); 89265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, debug, CTLFLAG_RWTUN, 90255570Strasz &debug, 1, "Enable debug messages"); 91255570Straszstatic int ping_timeout = 5; 92255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.ping_timeout", &ping_timeout); 93265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RWTUN, 94255570Strasz &ping_timeout, 5, "Interval between ping (NOP-Out) requests, in seconds"); 95255570Straszstatic int login_timeout = 60; 96255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.login_timeout", &login_timeout); 97265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, login_timeout, CTLFLAG_RWTUN, 98255570Strasz &login_timeout, 60, "Time to wait for ctld(8) to finish Login Phase, in seconds"); 99255570Straszstatic int maxcmdsn_delta = 256; 100255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.maxcmdsn_delta", &maxcmdsn_delta); 101265501StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, maxcmdsn_delta, CTLFLAG_RWTUN, 102255570Strasz &maxcmdsn_delta, 256, "Number of commands the initiator can send " 103255570Strasz "without confirmation"); 104255570Strasz 105265505Strasz#define CFISCSI_DEBUG(X, ...) \ 106265505Strasz do { \ 107265505Strasz if (debug > 1) { \ 108265505Strasz printf("%s: " X "\n", \ 109265505Strasz __func__, ## __VA_ARGS__); \ 110265505Strasz } \ 111255570Strasz } while (0) 112255570Strasz 113265505Strasz#define CFISCSI_WARN(X, ...) \ 114265505Strasz do { \ 115265505Strasz if (debug > 0) { \ 116265505Strasz printf("WARNING: %s: " X "\n", \ 117265505Strasz __func__, ## __VA_ARGS__); \ 118265505Strasz } \ 119255570Strasz } while (0) 120255570Strasz 121265505Strasz#define CFISCSI_SESSION_DEBUG(S, X, ...) \ 122265505Strasz do { \ 123265505Strasz if (debug > 1) { \ 124265505Strasz printf("%s: %s (%s): " X "\n", \ 125265505Strasz __func__, S->cs_initiator_addr, \ 126265505Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 127265505Strasz } \ 128255570Strasz } while (0) 129255570Strasz 130265505Strasz#define CFISCSI_SESSION_WARN(S, X, ...) \ 131265505Strasz do { \ 132265505Strasz if (debug > 0) { \ 133265505Strasz printf("WARNING: %s (%s): " X "\n", \ 134265505Strasz S->cs_initiator_addr, \ 135265505Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 136265505Strasz } \ 137255570Strasz } while (0) 138255570Strasz 139255570Strasz#define CFISCSI_SESSION_LOCK(X) mtx_lock(&X->cs_lock) 140255570Strasz#define CFISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->cs_lock) 141255570Strasz#define CFISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->cs_lock, MA_OWNED) 142255570Strasz 143255570Strasz#define CONN_SESSION(X) ((struct cfiscsi_session *)(X)->ic_prv0) 144255570Strasz#define PDU_SESSION(X) CONN_SESSION((X)->ip_conn) 145255570Strasz#define PDU_EXPDATASN(X) (X)->ip_prv0 146255570Strasz#define PDU_TOTAL_TRANSFER_LEN(X) (X)->ip_prv1 147255570Strasz#define PDU_R2TSN(X) (X)->ip_prv2 148255570Strasz 149255570Straszint cfiscsi_init(void); 150255570Straszstatic void cfiscsi_online(void *arg); 151255570Straszstatic void cfiscsi_offline(void *arg); 152268688Smavstatic int cfiscsi_info(void *arg, struct sbuf *sb); 153255570Straszstatic int cfiscsi_lun_enable(void *arg, 154255570Strasz struct ctl_id target_id, int lun_id); 155255570Straszstatic int cfiscsi_lun_disable(void *arg, 156255570Strasz struct ctl_id target_id, int lun_id); 157268685Smavstatic uint32_t cfiscsi_lun_map(void *arg, uint32_t lun); 158255570Straszstatic int cfiscsi_ioctl(struct cdev *dev, 159255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td); 160255570Straszstatic void cfiscsi_datamove(union ctl_io *io); 161273310Smavstatic void cfiscsi_datamove_in(union ctl_io *io); 162273310Smavstatic 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); 173268682Smavstatic struct cfiscsi_target *cfiscsi_target_find_or_create( 174268682Smav 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 181268677Smavstatic struct ctl_frontend cfiscsi_frontend = 182268677Smav{ 183268677Smav .name = "iscsi", 184268677Smav .init = cfiscsi_init, 185268677Smav .ioctl = cfiscsi_ioctl, 186255570Strasz}; 187268677SmavCTL_FRONTEND_DECLARE(ctlcfiscsi, cfiscsi_frontend); 188269202StraszMODULE_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 197255848Straszstatic bool 198255570Straszcfiscsi_pdu_update_cmdsn(const struct icl_pdu *request) 199255570Strasz{ 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) 221255848Strasz return (false); 222255570Strasz 223255570Strasz /* 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 /* 241255848Strasz * The target MUST silently ignore any non-immediate command outside 242255848Strasz * of this range. 243255570Strasz */ 244255848Strasz if (cmdsn < cs->cs_cmdsn || cmdsn > cs->cs_cmdsn + maxcmdsn_delta) { 245255848Strasz CFISCSI_SESSION_UNLOCK(cs); 246255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with CmdSN %d, " 247255570Strasz "while expected CmdSN was %d", cmdsn, cs->cs_cmdsn); 248255848Strasz return (true); 249255570Strasz } 250255570Strasz 251255570Strasz if ((request->ip_bhs->bhs_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 252255570Strasz cs->cs_cmdsn++; 253255570Strasz 254255570Strasz CFISCSI_SESSION_UNLOCK(cs); 255255848Strasz 256255848Strasz return (false); 257255570Strasz} 258255570Strasz 259255570Straszstatic void 260255570Straszcfiscsi_pdu_handle(struct icl_pdu *request) 261255570Strasz{ 262255570Strasz struct cfiscsi_session *cs; 263255848Strasz bool ignore; 264255570Strasz 265255570Strasz cs = PDU_SESSION(request); 266255570Strasz 267255848Strasz ignore = cfiscsi_pdu_update_cmdsn(request); 268255848Strasz if (ignore) { 269255848Strasz icl_pdu_free(request); 270255848Strasz return; 271255848Strasz } 272255570Strasz 273255570Strasz /* 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); 300256197Strasz icl_pdu_free(request); 301255570Strasz cfiscsi_session_terminate(cs); 302255570Strasz } 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; 467256187Strasz void *data = NULL; 468256187Strasz size_t datasize; 469256187Strasz int error; 470255570Strasz 471255570Strasz 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 483256187Strasz datasize = icl_pdu_data_segment_length(request); 484256187Strasz 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 496255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 497255570Strasz if (response == NULL) { 498256187Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory; " 499256187Strasz "droppping connection"); 500256187Strasz free(data, M_CFISCSI); 501255570Strasz icl_pdu_free(request); 502256187Strasz cfiscsi_session_terminate(cs); 503255570Strasz return; 504255570Strasz } 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; 510256187Strasz if (datasize > 0) { 511256187Strasz 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 } 523255570Strasz 524255570Strasz 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"); 544256197Strasz icl_pdu_free(request); 545255570Strasz cfiscsi_session_terminate(cs); 546255570Strasz return; 547255570Strasz } 548268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 549255570Strasz if (io == NULL) { 550256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io; " 551256197Strasz "dropping connection"); 552255570Strasz icl_pdu_free(request); 553256197Strasz cfiscsi_session_terminate(cs); 554255570Strasz return; 555255570Strasz } 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; 560268682Smav 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) { 591256197Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d; " 592256197Strasz "dropping connection", error); 593255570Strasz ctl_free_io(io); 594255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 595255570Strasz icl_pdu_free(request); 596256197Strasz cfiscsi_session_terminate(cs); 597255570Strasz } 598255570Strasz} 599255570Strasz 600255570Straszstatic 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; 612268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 613255570Strasz if (io == NULL) { 614256197Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io;" 615256197Strasz "dropping connection"); 616255570Strasz icl_pdu_free(request); 617256197Strasz cfiscsi_session_terminate(cs); 618255570Strasz return; 619255570Strasz } 620255570Strasz ctl_zero_io(io); 621255570Strasz 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; 624268682Smav 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; 637268690Smav case BHSTMR_FUNCTION_ABORT_TASK_SET: 638268690Smav#if 0 639268690Smav CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK_SET"); 640268690Smav#endif 641268690Smav io->taskio.task_action = CTL_TASK_ABORT_TASK_SET; 642268690Smav 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 833273310Smav 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 843273310Smav 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, 851273310Smav 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 864273310Smav 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); 920273310Smav done = (io->scsiio.ext_data_filled != cdw->cdw_r2t_end || 921273310Smav io->scsiio.ext_data_filled == io->scsiio.kern_data_len); 922255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 923273310Smav if (done) 924273310Smav io->scsiio.be_move_done(io); 925273310Smav else 926273310Smav 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; 942255570Strasz 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) { 947256197Strasz 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); 960255570Strasz cfiscsi_session_terminate(cs); 961255570Strasz break; 962255570Strasz case BHSLR_REASON_REMOVE_FOR_RECOVERY: 963255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 964255570Strasz if (response == NULL) { 965256197Strasz CFISCSI_SESSION_WARN(cs, 966256197Strasz "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 998255570Strasz if (cs->cs_terminating) 999255570Strasz return; 1000255570Strasz 1001255570Strasz callout_schedule(&cs->cs_callout, 1 * hz); 1002255570Strasz 1003265497Strasz atomic_add_int(&cs->cs_timeout, 1); 1004255570Strasz 1005255570Strasz#ifdef ICL_KERNEL_PROXY 1006255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 1007273307Smav 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 1016271618Strasz if (ping_timeout <= 0) { 1017271618Strasz /* 1018271618Strasz * Pings are disabled. Don't send NOP-In in this case; 1019271618Strasz * user might have disabled pings to work around problems 1020271618Strasz * with certain initiators that can't properly handle 1021271618Strasz * NOP-In, such as iPXE. Reset the timeout, to avoid 1022271618Strasz * triggering reconnection, should the user decide to 1023271618Strasz * reenable them. 1024271618Strasz */ 1025271618Strasz cs->cs_timeout = 0; 1026271618Strasz return; 1027271618Strasz } 1028271618Strasz 1029255570Strasz if (cs->cs_timeout >= ping_timeout) { 1030255570Strasz CFISCSI_SESSION_WARN(cs, "no ping reply (NOP-Out) after %d seconds; " 1031255570Strasz "dropping connection", ping_timeout); 1032255570Strasz cfiscsi_session_terminate(cs); 1033255570Strasz 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 1047255824Strasz cp = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1048255824Strasz if (cp == NULL) { 1049256197Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate memory"); 1050255824Strasz return; 1051255824Strasz } 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{ 1063268690Smav struct cfiscsi_data_wait *cdw; 1064255570Strasz union ctl_io *io; 1065275203Smav int error, last, wait; 1066255570Strasz 1067275494Smav if (cs->cs_target == NULL) 1068275494Smav return; /* No target yet, so nothing to do. */ 1069268682Smav io = ctl_alloc_io(cs->cs_target->ct_port.ctl_pool_ref); 1070255570Strasz if (io == NULL) { 1071255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 1072255570Strasz return; 1073255570Strasz } 1074255570Strasz ctl_zero_io(io); 1075268690Smav io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = cs; 1076255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 1077255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 1078268682Smav io->io_hdr.nexus.targ_port = cs->cs_target->ct_port.targ_port; 1079255570Strasz io->io_hdr.nexus.targ_target.id = 0; 1080268690Smav io->io_hdr.nexus.targ_lun = 0; 1081255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 1082268690Smav io->taskio.task_action = CTL_TASK_I_T_NEXUS_RESET; 1083275203Smav wait = cs->cs_outstanding_ctl_pdus; 1084268690Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1085255570Strasz error = ctl_queue(io); 1086255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1087255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1088268690Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 1089255570Strasz ctl_free_io(io); 1090255570Strasz } 1091268690Smav 1092255570Strasz CFISCSI_SESSION_LOCK(cs); 1093268690Smav while ((cdw = TAILQ_FIRST(&cs->cs_waiting_for_data_out)) != NULL) { 1094268690Smav TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 1095268690Smav CFISCSI_SESSION_UNLOCK(cs); 1096268259Smav /* 1097268259Smav * Set nonzero port status; this prevents backends from 1098268259Smav * assuming that the data transfer actually succeeded 1099268259Smav * and writing uninitialized data to disk. 1100268259Smav */ 1101268259Smav cdw->cdw_ctl_io->scsiio.io_hdr.port_status = 42; 1102255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 1103255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 1104268690Smav CFISCSI_SESSION_LOCK(cs); 1105255570Strasz } 1106255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1107268259Smav 1108268259Smav /* 1109268259Smav * Wait for CTL to terminate all the tasks. 1110268259Smav */ 1111275203Smav if (wait > 0) 1112275203Smav CFISCSI_SESSION_WARN(cs, 1113275203Smav "waiting for CTL to terminate %d tasks", wait); 1114268259Smav for (;;) { 1115268259Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1116268259Smav last = refcount_release(&cs->cs_outstanding_ctl_pdus); 1117268259Smav if (last != 0) 1118268259Smav break; 1119268691Smav tsleep(__DEVOLATILE(void *, &cs->cs_outstanding_ctl_pdus), 1120268691Smav 0, "cfiscsi_terminate", hz / 100); 1121268259Smav } 1122275203Smav if (wait > 0) 1123275203Smav CFISCSI_SESSION_WARN(cs, "tasks terminated"); 1124255570Strasz} 1125255570Strasz 1126255570Straszstatic void 1127255570Straszcfiscsi_maintenance_thread(void *arg) 1128255570Strasz{ 1129255570Strasz struct cfiscsi_session *cs; 1130255570Strasz 1131255570Strasz cs = arg; 1132255570Strasz 1133255570Strasz for (;;) { 1134255570Strasz CFISCSI_SESSION_LOCK(cs); 1135255570Strasz if (cs->cs_terminating == false) 1136255570Strasz cv_wait(&cs->cs_maintenance_cv, &cs->cs_lock); 1137255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1138255570Strasz 1139255570Strasz if (cs->cs_terminating) { 1140268259Smav 1141268259Smav /* 1142268259Smav * We used to wait up to 30 seconds to deliver queued 1143268259Smav * PDUs to the initiator. We also tried hard to deliver 1144268259Smav * SCSI Responses for the aborted PDUs. We don't do 1145268259Smav * that anymore. We might need to revisit that. 1146268259Smav */ 1147255570Strasz callout_drain(&cs->cs_callout); 1148255570Strasz icl_conn_close(cs->cs_conn); 1149255570Strasz 1150255570Strasz /* 1151268259Smav * At this point ICL receive thread is no longer 1152268259Smav * running; no new tasks can be queued. 1153255570Strasz */ 1154268259Smav cfiscsi_session_terminate_tasks(cs); 1155255570Strasz cfiscsi_session_delete(cs); 1156255570Strasz kthread_exit(); 1157255570Strasz return; 1158255570Strasz } 1159255570Strasz CFISCSI_SESSION_DEBUG(cs, "nothing to do"); 1160255570Strasz } 1161255570Strasz} 1162255570Strasz 1163255570Straszstatic void 1164255570Straszcfiscsi_session_terminate(struct cfiscsi_session *cs) 1165255570Strasz{ 1166255570Strasz 1167268258Smav if (cs->cs_terminating) 1168255570Strasz return; 1169268258Smav cs->cs_terminating = true; 1170255570Strasz cv_signal(&cs->cs_maintenance_cv); 1171265510Strasz#ifdef ICL_KERNEL_PROXY 1172265510Strasz cv_signal(&cs->cs_login_cv); 1173265510Strasz#endif 1174255570Strasz} 1175255570Strasz 1176255570Straszstatic int 1177255570Straszcfiscsi_session_register_initiator(struct cfiscsi_session *cs) 1178255570Strasz{ 1179268692Smav struct cfiscsi_target *ct; 1180268692Smav char *name; 1181268692Smav int i; 1182255570Strasz 1183255570Strasz KASSERT(cs->cs_ctl_initid == -1, ("already registered")); 1184255570Strasz 1185268692Smav ct = cs->cs_target; 1186268692Smav name = strdup(cs->cs_initiator_id, M_CTL); 1187268692Smav i = ctl_add_initiator(&ct->ct_port, -1, 0, name); 1188268692Smav if (i < 0) { 1189268692Smav CFISCSI_SESSION_WARN(cs, "ctl_add_initiator failed with error %d", 1190268692Smav i); 1191268692Smav cs->cs_ctl_initid = -1; 1192255570Strasz return (1); 1193255570Strasz } 1194268692Smav cs->cs_ctl_initid = i; 1195255570Strasz#if 0 1196268692Smav CFISCSI_SESSION_DEBUG(cs, "added initiator id %d", i); 1197255570Strasz#endif 1198255570Strasz 1199255570Strasz return (0); 1200255570Strasz} 1201255570Strasz 1202255570Straszstatic void 1203255570Straszcfiscsi_session_unregister_initiator(struct cfiscsi_session *cs) 1204255570Strasz{ 1205255570Strasz int error; 1206255570Strasz 1207255570Strasz if (cs->cs_ctl_initid == -1) 1208255570Strasz return; 1209255570Strasz 1210268692Smav error = ctl_remove_initiator(&cs->cs_target->ct_port, cs->cs_ctl_initid); 1211255570Strasz if (error != 0) { 1212255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_remove_initiator failed with error %d", 1213255570Strasz error); 1214255570Strasz } 1215255570Strasz cs->cs_ctl_initid = -1; 1216255570Strasz} 1217255570Strasz 1218255570Straszstatic struct cfiscsi_session * 1219255570Straszcfiscsi_session_new(struct cfiscsi_softc *softc) 1220255570Strasz{ 1221255570Strasz struct cfiscsi_session *cs; 1222255570Strasz int error; 1223255570Strasz 1224255570Strasz cs = malloc(sizeof(*cs), M_CFISCSI, M_NOWAIT | M_ZERO); 1225255570Strasz if (cs == NULL) { 1226255570Strasz CFISCSI_WARN("malloc failed"); 1227255570Strasz return (NULL); 1228255570Strasz } 1229255570Strasz cs->cs_ctl_initid = -1; 1230255570Strasz 1231255570Strasz refcount_init(&cs->cs_outstanding_ctl_pdus, 0); 1232255570Strasz TAILQ_INIT(&cs->cs_waiting_for_data_out); 1233255570Strasz mtx_init(&cs->cs_lock, "cfiscsi_lock", NULL, MTX_DEF); 1234255570Strasz cv_init(&cs->cs_maintenance_cv, "cfiscsi_mt"); 1235255570Strasz#ifdef ICL_KERNEL_PROXY 1236255570Strasz cv_init(&cs->cs_login_cv, "cfiscsi_login"); 1237255570Strasz#endif 1238255570Strasz 1239265496Strasz cs->cs_conn = icl_conn_new("cfiscsi", &cs->cs_lock); 1240255570Strasz cs->cs_conn->ic_receive = cfiscsi_receive_callback; 1241255570Strasz cs->cs_conn->ic_error = cfiscsi_error_callback; 1242255570Strasz cs->cs_conn->ic_prv0 = cs; 1243255570Strasz 1244255570Strasz error = kthread_add(cfiscsi_maintenance_thread, cs, NULL, NULL, 0, 0, "cfiscsimt"); 1245255570Strasz if (error != 0) { 1246255570Strasz CFISCSI_SESSION_WARN(cs, "kthread_add(9) failed with error %d", error); 1247255570Strasz free(cs, M_CFISCSI); 1248255570Strasz return (NULL); 1249255570Strasz } 1250255570Strasz 1251255570Strasz mtx_lock(&softc->lock); 1252275494Smav cs->cs_id = ++softc->last_session_id; 1253255570Strasz TAILQ_INSERT_TAIL(&softc->sessions, cs, cs_next); 1254255570Strasz mtx_unlock(&softc->lock); 1255255570Strasz 1256255570Strasz /* 1257255570Strasz * Start pinging the initiator. 1258255570Strasz */ 1259255570Strasz callout_init(&cs->cs_callout, 1); 1260255570Strasz callout_reset(&cs->cs_callout, 1 * hz, cfiscsi_callout, cs); 1261255570Strasz 1262255570Strasz return (cs); 1263255570Strasz} 1264255570Strasz 1265255570Straszstatic void 1266255570Straszcfiscsi_session_delete(struct cfiscsi_session *cs) 1267255570Strasz{ 1268255570Strasz struct cfiscsi_softc *softc; 1269255570Strasz 1270255570Strasz softc = &cfiscsi_softc; 1271255570Strasz 1272255570Strasz KASSERT(cs->cs_outstanding_ctl_pdus == 0, 1273255570Strasz ("destroying session with outstanding CTL pdus")); 1274255570Strasz KASSERT(TAILQ_EMPTY(&cs->cs_waiting_for_data_out), 1275255570Strasz ("destroying session with non-empty queue")); 1276255570Strasz 1277255570Strasz cfiscsi_session_unregister_initiator(cs); 1278255570Strasz if (cs->cs_target != NULL) 1279255570Strasz cfiscsi_target_release(cs->cs_target); 1280255570Strasz icl_conn_close(cs->cs_conn); 1281255570Strasz icl_conn_free(cs->cs_conn); 1282255570Strasz 1283255570Strasz mtx_lock(&softc->lock); 1284255570Strasz TAILQ_REMOVE(&softc->sessions, cs, cs_next); 1285255570Strasz mtx_unlock(&softc->lock); 1286255570Strasz 1287255570Strasz free(cs, M_CFISCSI); 1288255570Strasz} 1289255570Strasz 1290255570Straszint 1291255570Straszcfiscsi_init(void) 1292255570Strasz{ 1293255570Strasz struct cfiscsi_softc *softc; 1294255570Strasz int retval; 1295255570Strasz 1296255570Strasz softc = &cfiscsi_softc; 1297255570Strasz retval = 0; 1298255570Strasz bzero(softc, sizeof(*softc)); 1299255570Strasz mtx_init(&softc->lock, "cfiscsi", NULL, MTX_DEF); 1300255570Strasz 1301255570Strasz#ifdef ICL_KERNEL_PROXY 1302255570Strasz cv_init(&softc->accept_cv, "cfiscsi_accept"); 1303255570Strasz#endif 1304255570Strasz TAILQ_INIT(&softc->sessions); 1305255570Strasz TAILQ_INIT(&softc->targets); 1306255570Strasz 1307255570Strasz cfiscsi_data_wait_zone = uma_zcreate("cfiscsi_data_wait", 1308255570Strasz sizeof(struct cfiscsi_data_wait), NULL, NULL, NULL, NULL, 1309256058Strasz UMA_ALIGN_PTR, 0); 1310255570Strasz 1311255570Strasz return (0); 1312255570Strasz} 1313255570Strasz 1314255570Strasz#ifdef ICL_KERNEL_PROXY 1315255570Straszstatic void 1316265513Straszcfiscsi_accept(struct socket *so, struct sockaddr *sa, int portal_id) 1317255570Strasz{ 1318255570Strasz struct cfiscsi_session *cs; 1319255570Strasz 1320255570Strasz cs = cfiscsi_session_new(&cfiscsi_softc); 1321255570Strasz if (cs == NULL) { 1322255570Strasz CFISCSI_WARN("failed to create session"); 1323255570Strasz return; 1324255570Strasz } 1325255570Strasz 1326255570Strasz icl_conn_handoff_sock(cs->cs_conn, so); 1327265513Strasz cs->cs_initiator_sa = sa; 1328265509Strasz cs->cs_portal_id = portal_id; 1329255570Strasz cs->cs_waiting_for_ctld = true; 1330255570Strasz cv_signal(&cfiscsi_softc.accept_cv); 1331255570Strasz} 1332255570Strasz#endif 1333255570Strasz 1334255570Straszstatic void 1335255570Straszcfiscsi_online(void *arg) 1336255570Strasz{ 1337255570Strasz struct cfiscsi_softc *softc; 1338268682Smav struct cfiscsi_target *ct; 1339268682Smav int online; 1340255570Strasz 1341268682Smav ct = (struct cfiscsi_target *)arg; 1342268682Smav softc = ct->ct_softc; 1343255570Strasz 1344268682Smav mtx_lock(&softc->lock); 1345268682Smav if (ct->ct_online) { 1346268682Smav mtx_unlock(&softc->lock); 1347268682Smav return; 1348268682Smav } 1349268682Smav ct->ct_online = 1; 1350268682Smav online = softc->online++; 1351268682Smav mtx_unlock(&softc->lock); 1352268682Smav if (online > 0) 1353268682Smav return; 1354268682Smav 1355255570Strasz#ifdef ICL_KERNEL_PROXY 1356255570Strasz if (softc->listener != NULL) 1357255570Strasz icl_listen_free(softc->listener); 1358255570Strasz softc->listener = icl_listen_new(cfiscsi_accept); 1359255570Strasz#endif 1360255570Strasz} 1361255570Strasz 1362255570Straszstatic void 1363255570Straszcfiscsi_offline(void *arg) 1364255570Strasz{ 1365255570Strasz struct cfiscsi_softc *softc; 1366268682Smav struct cfiscsi_target *ct; 1367255570Strasz struct cfiscsi_session *cs; 1368268682Smav int online; 1369255570Strasz 1370268682Smav ct = (struct cfiscsi_target *)arg; 1371268682Smav softc = ct->ct_softc; 1372255570Strasz 1373268682Smav mtx_lock(&softc->lock); 1374268682Smav if (!ct->ct_online) { 1375268682Smav mtx_unlock(&softc->lock); 1376268682Smav return; 1377268682Smav } 1378268682Smav ct->ct_online = 0; 1379268682Smav online = --softc->online; 1380255570Strasz 1381268682Smav TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1382268682Smav if (cs->cs_target == ct) 1383268682Smav cfiscsi_session_terminate(cs); 1384268682Smav } 1385255570Strasz mtx_unlock(&softc->lock); 1386268682Smav if (online > 0) 1387268682Smav return; 1388255570Strasz 1389255570Strasz#ifdef ICL_KERNEL_PROXY 1390255570Strasz icl_listen_free(softc->listener); 1391255570Strasz softc->listener = NULL; 1392255570Strasz#endif 1393255570Strasz} 1394255570Strasz 1395268688Smavstatic int 1396268688Smavcfiscsi_info(void *arg, struct sbuf *sb) 1397268688Smav{ 1398268688Smav struct cfiscsi_target *ct = (struct cfiscsi_target *)arg; 1399268688Smav int retval; 1400268688Smav 1401268688Smav retval = sbuf_printf(sb, "\t<cfiscsi_state>%d</cfiscsi_state>\n", 1402268688Smav ct->ct_state); 1403268688Smav return (retval); 1404268688Smav} 1405268688Smav 1406255570Straszstatic void 1407255570Straszcfiscsi_ioctl_handoff(struct ctl_iscsi *ci) 1408255570Strasz{ 1409255570Strasz struct cfiscsi_softc *softc; 1410268691Smav struct cfiscsi_session *cs, *cs2; 1411255570Strasz struct cfiscsi_target *ct; 1412255570Strasz struct ctl_iscsi_handoff_params *cihp; 1413255570Strasz int error; 1414255570Strasz 1415255570Strasz cihp = (struct ctl_iscsi_handoff_params *)&(ci->data); 1416255570Strasz softc = &cfiscsi_softc; 1417255570Strasz 1418255570Strasz CFISCSI_DEBUG("new connection from %s (%s) to %s", 1419255570Strasz cihp->initiator_name, cihp->initiator_addr, 1420255570Strasz cihp->target_name); 1421255570Strasz 1422268682Smav ct = cfiscsi_target_find(softc, cihp->target_name); 1423268682Smav if (ct == NULL) { 1424255570Strasz ci->status = CTL_ISCSI_ERROR; 1425255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1426268682Smav "%s: target not found", __func__); 1427255570Strasz return; 1428255570Strasz } 1429255570Strasz 1430255570Strasz#ifdef ICL_KERNEL_PROXY 1431265507Strasz if (cihp->socket > 0 && cihp->connection_id > 0) { 1432265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1433265507Strasz "both socket and connection_id set"); 1434255570Strasz ci->status = CTL_ISCSI_ERROR; 1435264523Smav cfiscsi_target_release(ct); 1436255570Strasz return; 1437255570Strasz } 1438265507Strasz if (cihp->socket == 0) { 1439265507Strasz mtx_lock(&cfiscsi_softc.lock); 1440265507Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1441275494Smav if (cs->cs_id == cihp->connection_id) 1442265507Strasz break; 1443265507Strasz } 1444265507Strasz if (cs == NULL) { 1445265507Strasz mtx_unlock(&cfiscsi_softc.lock); 1446265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1447265507Strasz "connection not found"); 1448265507Strasz ci->status = CTL_ISCSI_ERROR; 1449265507Strasz cfiscsi_target_release(ct); 1450265507Strasz return; 1451265507Strasz } 1452265507Strasz mtx_unlock(&cfiscsi_softc.lock); 1453265507Strasz } else { 1454265507Strasz#endif 1455265507Strasz cs = cfiscsi_session_new(softc); 1456265507Strasz if (cs == NULL) { 1457265507Strasz ci->status = CTL_ISCSI_ERROR; 1458265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1459265507Strasz "%s: cfiscsi_session_new failed", __func__); 1460265507Strasz cfiscsi_target_release(ct); 1461265507Strasz return; 1462265507Strasz } 1463265507Strasz#ifdef ICL_KERNEL_PROXY 1464255570Strasz } 1465255570Strasz#endif 1466255570Strasz 1467255570Strasz /* 1468255570Strasz * First PDU of Full Feature phase has the same CmdSN as the last 1469255570Strasz * PDU from the Login Phase received from the initiator. Thus, 1470255570Strasz * the -1 below. 1471255570Strasz */ 1472255570Strasz cs->cs_portal_group_tag = cihp->portal_group_tag; 1473255570Strasz cs->cs_cmdsn = cihp->cmdsn; 1474255570Strasz cs->cs_statsn = cihp->statsn; 1475255570Strasz cs->cs_max_data_segment_length = cihp->max_recv_data_segment_length; 1476255570Strasz cs->cs_max_burst_length = cihp->max_burst_length; 1477255570Strasz cs->cs_immediate_data = !!cihp->immediate_data; 1478255570Strasz if (cihp->header_digest == CTL_ISCSI_DIGEST_CRC32C) 1479255570Strasz cs->cs_conn->ic_header_crc32c = true; 1480255570Strasz if (cihp->data_digest == CTL_ISCSI_DIGEST_CRC32C) 1481255570Strasz cs->cs_conn->ic_data_crc32c = true; 1482255570Strasz 1483255570Strasz strlcpy(cs->cs_initiator_name, 1484255570Strasz cihp->initiator_name, sizeof(cs->cs_initiator_name)); 1485255570Strasz strlcpy(cs->cs_initiator_addr, 1486255570Strasz cihp->initiator_addr, sizeof(cs->cs_initiator_addr)); 1487255570Strasz strlcpy(cs->cs_initiator_alias, 1488255570Strasz cihp->initiator_alias, sizeof(cs->cs_initiator_alias)); 1489268684Smav memcpy(cs->cs_initiator_isid, 1490268684Smav cihp->initiator_isid, sizeof(cs->cs_initiator_isid)); 1491268684Smav snprintf(cs->cs_initiator_id, sizeof(cs->cs_initiator_id), 1492268684Smav "%s,i,0x%02x%02x%02x%02x%02x%02x", cs->cs_initiator_name, 1493268684Smav cihp->initiator_isid[0], cihp->initiator_isid[1], 1494268684Smav cihp->initiator_isid[2], cihp->initiator_isid[3], 1495268684Smav cihp->initiator_isid[4], cihp->initiator_isid[5]); 1496255570Strasz 1497275494Smav mtx_lock(&softc->lock); 1498275494Smav if (ct->ct_online == 0) { 1499275494Smav mtx_unlock(&softc->lock); 1500275494Smav cfiscsi_session_terminate(cs); 1501275494Smav cfiscsi_target_release(ct); 1502275494Smav ci->status = CTL_ISCSI_ERROR; 1503275494Smav snprintf(ci->error_str, sizeof(ci->error_str), 1504275494Smav "%s: port offline", __func__); 1505275494Smav return; 1506275494Smav } 1507275494Smav cs->cs_target = ct; 1508275494Smav mtx_unlock(&softc->lock); 1509275494Smav 1510268691Smav refcount_acquire(&cs->cs_outstanding_ctl_pdus); 1511268691Smavrestart: 1512268691Smav if (!cs->cs_terminating) { 1513268691Smav mtx_lock(&softc->lock); 1514268691Smav TAILQ_FOREACH(cs2, &softc->sessions, cs_next) { 1515268691Smav if (cs2 != cs && cs2->cs_tasks_aborted == false && 1516268691Smav cs->cs_target == cs2->cs_target && 1517268691Smav cs->cs_portal_group_tag == cs2->cs_portal_group_tag && 1518268691Smav strcmp(cs->cs_initiator_id, cs2->cs_initiator_id) == 0) { 1519268691Smav cfiscsi_session_terminate(cs2); 1520268691Smav mtx_unlock(&softc->lock); 1521268691Smav pause("cfiscsi_reinstate", 1); 1522268691Smav goto restart; 1523268691Smav } 1524268691Smav } 1525268691Smav mtx_unlock(&softc->lock); 1526268691Smav } 1527268691Smav 1528268691Smav /* 1529268691Smav * Register initiator with CTL. 1530268691Smav */ 1531268691Smav cfiscsi_session_register_initiator(cs); 1532268691Smav 1533255570Strasz#ifdef ICL_KERNEL_PROXY 1534265507Strasz if (cihp->socket > 0) { 1535265507Strasz#endif 1536265507Strasz error = icl_conn_handoff(cs->cs_conn, cihp->socket); 1537265507Strasz if (error != 0) { 1538268691Smav cfiscsi_session_terminate(cs); 1539268691Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 1540265507Strasz ci->status = CTL_ISCSI_ERROR; 1541265507Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1542265507Strasz "%s: icl_conn_handoff failed with error %d", 1543265507Strasz __func__, error); 1544265507Strasz return; 1545265507Strasz } 1546265507Strasz#ifdef ICL_KERNEL_PROXY 1547255570Strasz } 1548255570Strasz#endif 1549255570Strasz 1550255570Strasz#ifdef ICL_KERNEL_PROXY 1551265507Strasz cs->cs_login_phase = false; 1552265507Strasz 1553255570Strasz /* 1554255570Strasz * First PDU of the Full Feature phase has likely already arrived. 1555255570Strasz * We have to pick it up and execute properly. 1556255570Strasz */ 1557255570Strasz if (cs->cs_login_pdu != NULL) { 1558255570Strasz CFISCSI_SESSION_DEBUG(cs, "picking up first PDU"); 1559255570Strasz cfiscsi_pdu_handle(cs->cs_login_pdu); 1560255570Strasz cs->cs_login_pdu = NULL; 1561255570Strasz } 1562255570Strasz#endif 1563255570Strasz 1564268691Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 1565255570Strasz ci->status = CTL_ISCSI_OK; 1566255570Strasz} 1567255570Strasz 1568255570Straszstatic void 1569255570Straszcfiscsi_ioctl_list(struct ctl_iscsi *ci) 1570255570Strasz{ 1571255570Strasz struct ctl_iscsi_list_params *cilp; 1572255570Strasz struct cfiscsi_session *cs; 1573255570Strasz struct cfiscsi_softc *softc; 1574255570Strasz struct sbuf *sb; 1575255570Strasz int error; 1576255570Strasz 1577255570Strasz cilp = (struct ctl_iscsi_list_params *)&(ci->data); 1578255570Strasz softc = &cfiscsi_softc; 1579255570Strasz 1580255570Strasz sb = sbuf_new(NULL, NULL, cilp->alloc_len, SBUF_FIXEDLEN); 1581255570Strasz if (sb == NULL) { 1582255570Strasz ci->status = CTL_ISCSI_ERROR; 1583255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1584255570Strasz "Unable to allocate %d bytes for iSCSI session list", 1585255570Strasz cilp->alloc_len); 1586255570Strasz return; 1587255570Strasz } 1588255570Strasz 1589255570Strasz sbuf_printf(sb, "<ctlislist>\n"); 1590255570Strasz mtx_lock(&softc->lock); 1591255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1592255570Strasz#ifdef ICL_KERNEL_PROXY 1593255570Strasz if (cs->cs_target == NULL) 1594255570Strasz continue; 1595255570Strasz#endif 1596255570Strasz error = sbuf_printf(sb, "<connection id=\"%d\">" 1597255570Strasz "<initiator>%s</initiator>" 1598255570Strasz "<initiator_addr>%s</initiator_addr>" 1599255570Strasz "<initiator_alias>%s</initiator_alias>" 1600255570Strasz "<target>%s</target>" 1601255570Strasz "<target_alias>%s</target_alias>" 1602255570Strasz "<header_digest>%s</header_digest>" 1603255570Strasz "<data_digest>%s</data_digest>" 1604255570Strasz "<max_data_segment_length>%zd</max_data_segment_length>" 1605255570Strasz "<immediate_data>%d</immediate_data>" 1606255570Strasz "<iser>%d</iser>" 1607255570Strasz "</connection>\n", 1608255570Strasz cs->cs_id, 1609255570Strasz cs->cs_initiator_name, cs->cs_initiator_addr, cs->cs_initiator_alias, 1610255570Strasz cs->cs_target->ct_name, cs->cs_target->ct_alias, 1611255570Strasz cs->cs_conn->ic_header_crc32c ? "CRC32C" : "None", 1612255570Strasz cs->cs_conn->ic_data_crc32c ? "CRC32C" : "None", 1613255570Strasz cs->cs_max_data_segment_length, 1614255570Strasz cs->cs_immediate_data, 1615255570Strasz cs->cs_conn->ic_iser); 1616255570Strasz if (error != 0) 1617255570Strasz break; 1618255570Strasz } 1619255570Strasz mtx_unlock(&softc->lock); 1620255570Strasz error = sbuf_printf(sb, "</ctlislist>\n"); 1621255570Strasz if (error != 0) { 1622255570Strasz sbuf_delete(sb); 1623255570Strasz ci->status = CTL_ISCSI_LIST_NEED_MORE_SPACE; 1624255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1625255570Strasz "Out of space, %d bytes is too small", cilp->alloc_len); 1626255570Strasz return; 1627255570Strasz } 1628255570Strasz sbuf_finish(sb); 1629255570Strasz 1630255570Strasz error = copyout(sbuf_data(sb), cilp->conn_xml, sbuf_len(sb) + 1); 1631255570Strasz cilp->fill_len = sbuf_len(sb) + 1; 1632255570Strasz ci->status = CTL_ISCSI_OK; 1633255570Strasz sbuf_delete(sb); 1634255570Strasz} 1635255570Strasz 1636255570Straszstatic void 1637255570Straszcfiscsi_ioctl_terminate(struct ctl_iscsi *ci) 1638255570Strasz{ 1639255570Strasz struct icl_pdu *response; 1640255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1641255570Strasz struct ctl_iscsi_terminate_params *citp; 1642255570Strasz struct cfiscsi_session *cs; 1643255570Strasz struct cfiscsi_softc *softc; 1644255570Strasz int found = 0; 1645255570Strasz 1646255570Strasz citp = (struct ctl_iscsi_terminate_params *)&(ci->data); 1647255570Strasz softc = &cfiscsi_softc; 1648255570Strasz 1649255570Strasz mtx_lock(&softc->lock); 1650255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1651255570Strasz if (citp->all == 0 && cs->cs_id != citp->connection_id && 1652255570Strasz strcmp(cs->cs_initiator_name, citp->initiator_name) != 0 && 1653255570Strasz strcmp(cs->cs_initiator_addr, citp->initiator_addr) != 0) 1654255570Strasz continue; 1655255570Strasz 1656255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1657255570Strasz if (response == NULL) { 1658255570Strasz /* 1659255570Strasz * Oh well. Just terminate the connection. 1660255570Strasz */ 1661255570Strasz } else { 1662255570Strasz bhsam = (struct iscsi_bhs_asynchronous_message *) 1663255570Strasz response->ip_bhs; 1664255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1665255570Strasz bhsam->bhsam_flags = 0x80; 1666255570Strasz bhsam->bhsam_0xffffffff = 0xffffffff; 1667255570Strasz bhsam->bhsam_async_event = 1668255570Strasz BHSAM_EVENT_TARGET_TERMINATES_SESSION; 1669255570Strasz cfiscsi_pdu_queue(response); 1670255570Strasz } 1671255570Strasz cfiscsi_session_terminate(cs); 1672255570Strasz found++; 1673255570Strasz } 1674255570Strasz mtx_unlock(&softc->lock); 1675255570Strasz 1676255570Strasz if (found == 0) { 1677255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1678255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1679255570Strasz "No matching connections found"); 1680255570Strasz return; 1681255570Strasz } 1682255570Strasz 1683255570Strasz ci->status = CTL_ISCSI_OK; 1684255570Strasz} 1685255570Strasz 1686255570Straszstatic void 1687255570Straszcfiscsi_ioctl_logout(struct ctl_iscsi *ci) 1688255570Strasz{ 1689255570Strasz struct icl_pdu *response; 1690255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1691255570Strasz struct ctl_iscsi_logout_params *cilp; 1692255570Strasz struct cfiscsi_session *cs; 1693255570Strasz struct cfiscsi_softc *softc; 1694255570Strasz int found = 0; 1695255570Strasz 1696255570Strasz cilp = (struct ctl_iscsi_logout_params *)&(ci->data); 1697255570Strasz softc = &cfiscsi_softc; 1698255570Strasz 1699255570Strasz mtx_lock(&softc->lock); 1700255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1701255570Strasz if (cilp->all == 0 && cs->cs_id != cilp->connection_id && 1702255570Strasz strcmp(cs->cs_initiator_name, cilp->initiator_name) != 0 && 1703255570Strasz strcmp(cs->cs_initiator_addr, cilp->initiator_addr) != 0) 1704255570Strasz continue; 1705255570Strasz 1706255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1707255570Strasz if (response == NULL) { 1708255570Strasz ci->status = CTL_ISCSI_ERROR; 1709255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1710255570Strasz "Unable to allocate memory"); 1711255570Strasz mtx_unlock(&softc->lock); 1712255570Strasz return; 1713255570Strasz } 1714255570Strasz bhsam = 1715255570Strasz (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1716255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1717255570Strasz bhsam->bhsam_flags = 0x80; 1718255570Strasz bhsam->bhsam_async_event = BHSAM_EVENT_TARGET_REQUESTS_LOGOUT; 1719255570Strasz bhsam->bhsam_parameter3 = htons(10); 1720255570Strasz cfiscsi_pdu_queue(response); 1721255570Strasz found++; 1722255570Strasz } 1723255570Strasz mtx_unlock(&softc->lock); 1724255570Strasz 1725255570Strasz if (found == 0) { 1726255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1727255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1728255570Strasz "No matching connections found"); 1729255570Strasz return; 1730255570Strasz } 1731255570Strasz 1732255570Strasz ci->status = CTL_ISCSI_OK; 1733255570Strasz} 1734255570Strasz 1735255570Strasz#ifdef ICL_KERNEL_PROXY 1736255570Straszstatic void 1737255570Straszcfiscsi_ioctl_listen(struct ctl_iscsi *ci) 1738255570Strasz{ 1739255570Strasz struct ctl_iscsi_listen_params *cilp; 1740255570Strasz struct sockaddr *sa; 1741255570Strasz int error; 1742255570Strasz 1743255570Strasz cilp = (struct ctl_iscsi_listen_params *)&(ci->data); 1744255570Strasz 1745255570Strasz if (cfiscsi_softc.listener == NULL) { 1746255570Strasz CFISCSI_DEBUG("no listener"); 1747255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "no listener"); 1748255570Strasz ci->status = CTL_ISCSI_ERROR; 1749255570Strasz return; 1750255570Strasz } 1751255570Strasz 1752255570Strasz error = getsockaddr(&sa, (void *)cilp->addr, cilp->addrlen); 1753255570Strasz if (error != 0) { 1754255570Strasz CFISCSI_DEBUG("getsockaddr, error %d", error); 1755255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "getsockaddr failed"); 1756255570Strasz ci->status = CTL_ISCSI_ERROR; 1757255570Strasz return; 1758255570Strasz } 1759255570Strasz 1760255570Strasz error = icl_listen_add(cfiscsi_softc.listener, cilp->iser, cilp->domain, 1761265509Strasz cilp->socktype, cilp->protocol, sa, cilp->portal_id); 1762255570Strasz if (error != 0) { 1763255570Strasz free(sa, M_SONAME); 1764255570Strasz CFISCSI_DEBUG("icl_listen_add, error %d", error); 1765255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1766255570Strasz "icl_listen_add failed, error %d", error); 1767255570Strasz ci->status = CTL_ISCSI_ERROR; 1768255570Strasz return; 1769255570Strasz } 1770255570Strasz 1771255570Strasz ci->status = CTL_ISCSI_OK; 1772255570Strasz} 1773255570Strasz 1774255570Straszstatic void 1775255570Straszcfiscsi_ioctl_accept(struct ctl_iscsi *ci) 1776255570Strasz{ 1777255570Strasz struct ctl_iscsi_accept_params *ciap; 1778255570Strasz struct cfiscsi_session *cs; 1779255570Strasz int error; 1780255570Strasz 1781255570Strasz ciap = (struct ctl_iscsi_accept_params *)&(ci->data); 1782255570Strasz 1783255570Strasz mtx_lock(&cfiscsi_softc.lock); 1784255570Strasz for (;;) { 1785255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1786255570Strasz if (cs->cs_waiting_for_ctld) 1787255570Strasz break; 1788255570Strasz } 1789255570Strasz if (cs != NULL) 1790255570Strasz break; 1791255570Strasz error = cv_wait_sig(&cfiscsi_softc.accept_cv, &cfiscsi_softc.lock); 1792255570Strasz if (error != 0) { 1793255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1794255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "interrupted"); 1795255570Strasz ci->status = CTL_ISCSI_ERROR; 1796255570Strasz return; 1797255570Strasz } 1798255570Strasz } 1799255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1800255570Strasz 1801255570Strasz cs->cs_waiting_for_ctld = false; 1802255570Strasz cs->cs_login_phase = true; 1803255570Strasz 1804255570Strasz ciap->connection_id = cs->cs_id; 1805265509Strasz ciap->portal_id = cs->cs_portal_id; 1806265513Strasz ciap->initiator_addrlen = cs->cs_initiator_sa->sa_len; 1807265513Strasz error = copyout(cs->cs_initiator_sa, ciap->initiator_addr, 1808265513Strasz cs->cs_initiator_sa->sa_len); 1809265513Strasz if (error != 0) { 1810265513Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1811265513Strasz "copyout failed with error %d", error); 1812265513Strasz ci->status = CTL_ISCSI_ERROR; 1813265513Strasz return; 1814265513Strasz } 1815265513Strasz 1816255570Strasz ci->status = CTL_ISCSI_OK; 1817255570Strasz} 1818255570Strasz 1819255570Straszstatic void 1820255570Straszcfiscsi_ioctl_send(struct ctl_iscsi *ci) 1821255570Strasz{ 1822255570Strasz struct ctl_iscsi_send_params *cisp; 1823255570Strasz struct cfiscsi_session *cs; 1824255570Strasz struct icl_pdu *ip; 1825255570Strasz size_t datalen; 1826255570Strasz void *data; 1827255570Strasz int error; 1828255570Strasz 1829255570Strasz cisp = (struct ctl_iscsi_send_params *)&(ci->data); 1830255570Strasz 1831255570Strasz mtx_lock(&cfiscsi_softc.lock); 1832255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1833255570Strasz if (cs->cs_id == cisp->connection_id) 1834255570Strasz break; 1835255570Strasz } 1836255570Strasz if (cs == NULL) { 1837255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1838255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1839255570Strasz ci->status = CTL_ISCSI_ERROR; 1840255570Strasz return; 1841255570Strasz } 1842255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1843255570Strasz 1844255570Strasz#if 0 1845255570Strasz if (cs->cs_login_phase == false) 1846255570Strasz return (EBUSY); 1847255570Strasz#endif 1848255570Strasz 1849255570Strasz if (cs->cs_terminating) { 1850255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection is terminating"); 1851255570Strasz ci->status = CTL_ISCSI_ERROR; 1852255570Strasz return; 1853255570Strasz } 1854255570Strasz 1855255570Strasz datalen = cisp->data_segment_len; 1856255570Strasz /* 1857255570Strasz * XXX 1858255570Strasz */ 1859255570Strasz //if (datalen > CFISCSI_MAX_DATA_SEGMENT_LENGTH) { 1860255570Strasz if (datalen > 65535) { 1861255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1862255570Strasz ci->status = CTL_ISCSI_ERROR; 1863255570Strasz return; 1864255570Strasz } 1865255570Strasz if (datalen > 0) { 1866255570Strasz data = malloc(datalen, M_CFISCSI, M_WAITOK); 1867255570Strasz error = copyin(cisp->data_segment, data, datalen); 1868255570Strasz if (error != 0) { 1869255570Strasz free(data, M_CFISCSI); 1870255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "copyin error %d", error); 1871255570Strasz ci->status = CTL_ISCSI_ERROR; 1872255570Strasz return; 1873255570Strasz } 1874255570Strasz } 1875255570Strasz 1876255570Strasz ip = icl_pdu_new_bhs(cs->cs_conn, M_WAITOK); 1877255570Strasz memcpy(ip->ip_bhs, cisp->bhs, sizeof(*ip->ip_bhs)); 1878255570Strasz if (datalen > 0) { 1879255570Strasz icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1880255570Strasz free(data, M_CFISCSI); 1881255570Strasz } 1882265507Strasz CFISCSI_SESSION_LOCK(cs); 1883255570Strasz icl_pdu_queue(ip); 1884265507Strasz CFISCSI_SESSION_UNLOCK(cs); 1885255570Strasz ci->status = CTL_ISCSI_OK; 1886255570Strasz} 1887255570Strasz 1888255570Straszstatic void 1889255570Straszcfiscsi_ioctl_receive(struct ctl_iscsi *ci) 1890255570Strasz{ 1891255570Strasz struct ctl_iscsi_receive_params *cirp; 1892255570Strasz struct cfiscsi_session *cs; 1893255570Strasz struct icl_pdu *ip; 1894255570Strasz void *data; 1895265510Strasz int error; 1896255570Strasz 1897255570Strasz cirp = (struct ctl_iscsi_receive_params *)&(ci->data); 1898255570Strasz 1899255570Strasz mtx_lock(&cfiscsi_softc.lock); 1900255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1901255570Strasz if (cs->cs_id == cirp->connection_id) 1902255570Strasz break; 1903255570Strasz } 1904255570Strasz if (cs == NULL) { 1905255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1906265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1907265510Strasz "connection not found"); 1908255570Strasz ci->status = CTL_ISCSI_ERROR; 1909255570Strasz return; 1910255570Strasz } 1911255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1912255570Strasz 1913255570Strasz#if 0 1914255570Strasz if (is->is_login_phase == false) 1915255570Strasz return (EBUSY); 1916255570Strasz#endif 1917255570Strasz 1918255570Strasz CFISCSI_SESSION_LOCK(cs); 1919265510Strasz while (cs->cs_login_pdu == NULL && cs->cs_terminating == false) { 1920265510Strasz error = cv_wait_sig(&cs->cs_login_cv, &cs->cs_lock); 1921265510Strasz if (error != 0) { 1922265510Strasz CFISCSI_SESSION_UNLOCK(cs); 1923265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1924265510Strasz "interrupted by signal"); 1925265510Strasz ci->status = CTL_ISCSI_ERROR; 1926265510Strasz return; 1927265510Strasz } 1928265510Strasz } 1929265510Strasz 1930255570Strasz if (cs->cs_terminating) { 1931255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1932265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1933265510Strasz "connection terminating"); 1934255570Strasz ci->status = CTL_ISCSI_ERROR; 1935255570Strasz return; 1936255570Strasz } 1937255570Strasz ip = cs->cs_login_pdu; 1938255570Strasz cs->cs_login_pdu = NULL; 1939255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1940255570Strasz 1941255570Strasz if (ip->ip_data_len > cirp->data_segment_len) { 1942255570Strasz icl_pdu_free(ip); 1943265510Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1944265510Strasz "data segment too big"); 1945255570Strasz ci->status = CTL_ISCSI_ERROR; 1946255570Strasz return; 1947255570Strasz } 1948255570Strasz 1949255570Strasz copyout(ip->ip_bhs, cirp->bhs, sizeof(*ip->ip_bhs)); 1950255570Strasz if (ip->ip_data_len > 0) { 1951255570Strasz data = malloc(ip->ip_data_len, M_CFISCSI, M_WAITOK); 1952255570Strasz icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1953255570Strasz copyout(data, cirp->data_segment, ip->ip_data_len); 1954255570Strasz free(data, M_CFISCSI); 1955255570Strasz } 1956255570Strasz 1957255570Strasz icl_pdu_free(ip); 1958255570Strasz ci->status = CTL_ISCSI_OK; 1959255570Strasz} 1960255570Strasz 1961255570Strasz#endif /* !ICL_KERNEL_PROXY */ 1962255570Strasz 1963268682Smavstatic void 1964268682Smavcfiscsi_ioctl_port_create(struct ctl_req *req) 1965268682Smav{ 1966268682Smav struct cfiscsi_target *ct; 1967268682Smav struct ctl_port *port; 1968268682Smav const char *target, *alias, *tag; 1969268683Smav struct scsi_vpd_id_descriptor *desc; 1970268682Smav ctl_options_t opts; 1971268683Smav int retval, len, idlen; 1972268682Smav 1973268682Smav ctl_init_opts(&opts, req->num_args, req->kern_args); 1974268682Smav target = ctl_get_opt(&opts, "cfiscsi_target"); 1975268682Smav alias = ctl_get_opt(&opts, "cfiscsi_target_alias"); 1976268682Smav tag = ctl_get_opt(&opts, "cfiscsi_portal_group_tag"); 1977268682Smav if (target == NULL || tag == NULL) { 1978268682Smav req->status = CTL_LUN_ERROR; 1979268682Smav snprintf(req->error_str, sizeof(req->error_str), 1980268682Smav "Missing required argument"); 1981268695Smav ctl_free_opts(&opts); 1982268682Smav return; 1983268682Smav } 1984268682Smav ct = cfiscsi_target_find_or_create(&cfiscsi_softc, target, alias); 1985268682Smav if (ct == NULL) { 1986268682Smav req->status = CTL_LUN_ERROR; 1987268682Smav snprintf(req->error_str, sizeof(req->error_str), 1988268682Smav "failed to create target \"%s\"", target); 1989268695Smav ctl_free_opts(&opts); 1990268682Smav return; 1991268682Smav } 1992268682Smav if (ct->ct_state == CFISCSI_TARGET_STATE_ACTIVE) { 1993268682Smav req->status = CTL_LUN_ERROR; 1994268682Smav snprintf(req->error_str, sizeof(req->error_str), 1995275445Strasz "target \"%s\" already exists", target); 1996268695Smav cfiscsi_target_release(ct); 1997268695Smav ctl_free_opts(&opts); 1998268682Smav return; 1999268682Smav } 2000268682Smav port = &ct->ct_port; 2001268682Smav if (ct->ct_state == CFISCSI_TARGET_STATE_DYING) 2002268682Smav goto done; 2003268682Smav 2004268682Smav port->frontend = &cfiscsi_frontend; 2005268682Smav port->port_type = CTL_PORT_ISCSI; 2006268682Smav /* XXX KDM what should the real number be here? */ 2007268682Smav port->num_requested_ctl_io = 4096; 2008268682Smav port->port_name = "iscsi"; 2009273319Smav port->physical_port = strtoul(tag, NULL, 0); 2010273319Smav port->virtual_port = ct->ct_target_id; 2011268682Smav port->port_online = cfiscsi_online; 2012268682Smav port->port_offline = cfiscsi_offline; 2013268688Smav port->port_info = cfiscsi_info; 2014268682Smav port->onoff_arg = ct; 2015268682Smav port->lun_enable = cfiscsi_lun_enable; 2016268682Smav port->lun_disable = cfiscsi_lun_disable; 2017268685Smav port->lun_map = cfiscsi_lun_map; 2018268682Smav port->targ_lun_arg = ct; 2019268682Smav port->fe_datamove = cfiscsi_datamove; 2020268682Smav port->fe_done = cfiscsi_done; 2021268682Smav 2022268682Smav /* XXX KDM what should we report here? */ 2023268682Smav /* XXX These should probably be fetched from CTL. */ 2024268682Smav port->max_targets = 1; 2025268682Smav port->max_target_id = 15; 2026268682Smav 2027268682Smav port->options = opts; 2028268682Smav STAILQ_INIT(&opts); 2029268682Smav 2030268683Smav /* Generate Port ID. */ 2031268683Smav idlen = strlen(target) + strlen(",t,0x0001") + 1; 2032268683Smav idlen = roundup2(idlen, 4); 2033268683Smav len = sizeof(struct scsi_vpd_device_id) + idlen; 2034268683Smav port->port_devid = malloc(sizeof(struct ctl_devid) + len, 2035268683Smav M_CTL, M_WAITOK | M_ZERO); 2036268683Smav port->port_devid->len = len; 2037268683Smav desc = (struct scsi_vpd_id_descriptor *)port->port_devid->data; 2038268683Smav desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2039268683Smav desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2040268683Smav SVPD_ID_TYPE_SCSI_NAME; 2041268683Smav desc->length = idlen; 2042268683Smav snprintf(desc->identifier, idlen, "%s,t,0x%4.4x", 2043273319Smav target, port->physical_port); 2044268683Smav 2045268683Smav /* Generate Target ID. */ 2046268683Smav idlen = strlen(target) + 1; 2047268683Smav idlen = roundup2(idlen, 4); 2048268683Smav len = sizeof(struct scsi_vpd_device_id) + idlen; 2049268683Smav port->target_devid = malloc(sizeof(struct ctl_devid) + len, 2050268683Smav M_CTL, M_WAITOK | M_ZERO); 2051268683Smav port->target_devid->len = len; 2052268683Smav desc = (struct scsi_vpd_id_descriptor *)port->target_devid->data; 2053268683Smav desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 2054268683Smav desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_TARGET | 2055268683Smav SVPD_ID_TYPE_SCSI_NAME; 2056268683Smav desc->length = idlen; 2057268683Smav strlcpy(desc->identifier, target, idlen); 2058268683Smav 2059275493Smav retval = ctl_port_register(port); 2060268682Smav if (retval != 0) { 2061268682Smav ctl_free_opts(&port->options); 2062268682Smav cfiscsi_target_release(ct); 2063268683Smav free(port->port_devid, M_CFISCSI); 2064268683Smav free(port->target_devid, M_CFISCSI); 2065268682Smav req->status = CTL_LUN_ERROR; 2066268682Smav snprintf(req->error_str, sizeof(req->error_str), 2067268682Smav "ctl_frontend_register() failed with error %d", retval); 2068268682Smav return; 2069268682Smav } 2070268682Smavdone: 2071268682Smav ct->ct_state = CFISCSI_TARGET_STATE_ACTIVE; 2072268682Smav req->status = CTL_LUN_OK; 2073268682Smav memcpy(req->kern_args[0].kvalue, &port->targ_port, 2074268682Smav sizeof(port->targ_port)); //XXX 2075268682Smav} 2076268682Smav 2077268682Smavstatic void 2078268682Smavcfiscsi_ioctl_port_remove(struct ctl_req *req) 2079268682Smav{ 2080268682Smav struct cfiscsi_target *ct; 2081268682Smav const char *target; 2082268682Smav ctl_options_t opts; 2083268682Smav 2084268682Smav ctl_init_opts(&opts, req->num_args, req->kern_args); 2085268682Smav target = ctl_get_opt(&opts, "cfiscsi_target"); 2086268682Smav if (target == NULL) { 2087268682Smav ctl_free_opts(&opts); 2088268682Smav req->status = CTL_LUN_ERROR; 2089268682Smav snprintf(req->error_str, sizeof(req->error_str), 2090268682Smav "Missing required argument"); 2091268682Smav return; 2092268682Smav } 2093268682Smav ct = cfiscsi_target_find(&cfiscsi_softc, target); 2094268682Smav if (ct == NULL) { 2095268682Smav ctl_free_opts(&opts); 2096268682Smav req->status = CTL_LUN_ERROR; 2097268682Smav snprintf(req->error_str, sizeof(req->error_str), 2098268682Smav "can't find target \"%s\"", target); 2099268682Smav return; 2100268682Smav } 2101268682Smav if (ct->ct_state != CFISCSI_TARGET_STATE_ACTIVE) { 2102268682Smav ctl_free_opts(&opts); 2103268682Smav req->status = CTL_LUN_ERROR; 2104268682Smav snprintf(req->error_str, sizeof(req->error_str), 2105268682Smav "target \"%s\" is already dying", target); 2106268682Smav return; 2107268682Smav } 2108268682Smav ctl_free_opts(&opts); 2109268682Smav 2110268682Smav ct->ct_state = CFISCSI_TARGET_STATE_DYING; 2111268682Smav ctl_port_offline(&ct->ct_port); 2112268682Smav cfiscsi_target_release(ct); 2113268682Smav cfiscsi_target_release(ct); 2114268682Smav} 2115268682Smav 2116255570Straszstatic int 2117255570Straszcfiscsi_ioctl(struct cdev *dev, 2118255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td) 2119255570Strasz{ 2120255570Strasz struct ctl_iscsi *ci; 2121268682Smav struct ctl_req *req; 2122255570Strasz 2123268682Smav if (cmd == CTL_PORT_REQ) { 2124268682Smav req = (struct ctl_req *)addr; 2125268682Smav switch (req->reqtype) { 2126268682Smav case CTL_REQ_CREATE: 2127268682Smav cfiscsi_ioctl_port_create(req); 2128268682Smav break; 2129268682Smav case CTL_REQ_REMOVE: 2130268682Smav cfiscsi_ioctl_port_remove(req); 2131268682Smav break; 2132268682Smav default: 2133268682Smav req->status = CTL_LUN_ERROR; 2134268682Smav snprintf(req->error_str, sizeof(req->error_str), 2135268682Smav "Unsupported request type %d", req->reqtype); 2136268682Smav } 2137268682Smav return (0); 2138268682Smav } 2139268682Smav 2140255570Strasz if (cmd != CTL_ISCSI) 2141255570Strasz return (ENOTTY); 2142255570Strasz 2143255570Strasz ci = (struct ctl_iscsi *)addr; 2144255570Strasz switch (ci->type) { 2145255570Strasz case CTL_ISCSI_HANDOFF: 2146255570Strasz cfiscsi_ioctl_handoff(ci); 2147255570Strasz break; 2148255570Strasz case CTL_ISCSI_LIST: 2149255570Strasz cfiscsi_ioctl_list(ci); 2150255570Strasz break; 2151255570Strasz case CTL_ISCSI_TERMINATE: 2152255570Strasz cfiscsi_ioctl_terminate(ci); 2153255570Strasz break; 2154255570Strasz case CTL_ISCSI_LOGOUT: 2155255570Strasz cfiscsi_ioctl_logout(ci); 2156255570Strasz break; 2157255570Strasz#ifdef ICL_KERNEL_PROXY 2158255570Strasz case CTL_ISCSI_LISTEN: 2159255570Strasz cfiscsi_ioctl_listen(ci); 2160255570Strasz break; 2161255570Strasz case CTL_ISCSI_ACCEPT: 2162255570Strasz cfiscsi_ioctl_accept(ci); 2163255570Strasz break; 2164255570Strasz case CTL_ISCSI_SEND: 2165255570Strasz cfiscsi_ioctl_send(ci); 2166255570Strasz break; 2167255570Strasz case CTL_ISCSI_RECEIVE: 2168255570Strasz cfiscsi_ioctl_receive(ci); 2169255570Strasz break; 2170265508Strasz#else 2171265508Strasz case CTL_ISCSI_LISTEN: 2172265508Strasz case CTL_ISCSI_ACCEPT: 2173265508Strasz case CTL_ISCSI_SEND: 2174265508Strasz case CTL_ISCSI_RECEIVE: 2175265508Strasz ci->status = CTL_ISCSI_ERROR; 2176265508Strasz snprintf(ci->error_str, sizeof(ci->error_str), 2177265508Strasz "%s: CTL compiled without ICL_KERNEL_PROXY", 2178265508Strasz __func__); 2179265508Strasz break; 2180265508Strasz#endif /* !ICL_KERNEL_PROXY */ 2181255570Strasz default: 2182255570Strasz ci->status = CTL_ISCSI_ERROR; 2183255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 2184255570Strasz "%s: invalid iSCSI request type %d", __func__, ci->type); 2185255570Strasz break; 2186255570Strasz } 2187255570Strasz 2188255570Strasz return (0); 2189255570Strasz} 2190255570Strasz 2191255570Straszstatic void 2192255570Straszcfiscsi_target_hold(struct cfiscsi_target *ct) 2193255570Strasz{ 2194255570Strasz 2195255570Strasz refcount_acquire(&ct->ct_refcount); 2196255570Strasz} 2197255570Strasz 2198255570Straszstatic void 2199255570Straszcfiscsi_target_release(struct cfiscsi_target *ct) 2200255570Strasz{ 2201255570Strasz struct cfiscsi_softc *softc; 2202255570Strasz 2203255570Strasz softc = ct->ct_softc; 2204255570Strasz mtx_lock(&softc->lock); 2205255570Strasz if (refcount_release(&ct->ct_refcount)) { 2206255570Strasz TAILQ_REMOVE(&softc->targets, ct, ct_next); 2207255570Strasz mtx_unlock(&softc->lock); 2208268682Smav if (ct->ct_state != CFISCSI_TARGET_STATE_INVALID) { 2209268682Smav ct->ct_state = CFISCSI_TARGET_STATE_INVALID; 2210268682Smav if (ctl_port_deregister(&ct->ct_port) != 0) 2211268682Smav printf("%s: ctl_port_deregister() failed\n", 2212268682Smav __func__); 2213268682Smav } 2214255570Strasz free(ct, M_CFISCSI); 2215255570Strasz 2216255570Strasz return; 2217255570Strasz } 2218255570Strasz mtx_unlock(&softc->lock); 2219255570Strasz} 2220255570Strasz 2221255570Straszstatic struct cfiscsi_target * 2222255570Straszcfiscsi_target_find(struct cfiscsi_softc *softc, const char *name) 2223255570Strasz{ 2224255570Strasz struct cfiscsi_target *ct; 2225255570Strasz 2226255570Strasz mtx_lock(&softc->lock); 2227255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2228268682Smav if (strcmp(name, ct->ct_name) != 0 || 2229268682Smav ct->ct_state != CFISCSI_TARGET_STATE_ACTIVE) 2230255570Strasz continue; 2231255570Strasz cfiscsi_target_hold(ct); 2232255570Strasz mtx_unlock(&softc->lock); 2233255570Strasz return (ct); 2234255570Strasz } 2235255570Strasz mtx_unlock(&softc->lock); 2236255570Strasz 2237255570Strasz return (NULL); 2238255570Strasz} 2239255570Strasz 2240255570Straszstatic struct cfiscsi_target * 2241255570Straszcfiscsi_target_find_or_create(struct cfiscsi_softc *softc, const char *name, 2242255570Strasz const char *alias) 2243255570Strasz{ 2244255570Strasz struct cfiscsi_target *ct, *newct; 2245255570Strasz int i; 2246255570Strasz 2247255570Strasz if (name[0] == '\0' || strlen(name) >= CTL_ISCSI_NAME_LEN) 2248255570Strasz return (NULL); 2249255570Strasz 2250255570Strasz newct = malloc(sizeof(*newct), M_CFISCSI, M_WAITOK | M_ZERO); 2251255570Strasz 2252255570Strasz mtx_lock(&softc->lock); 2253255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2254268682Smav if (strcmp(name, ct->ct_name) != 0 || 2255268682Smav ct->ct_state == CFISCSI_TARGET_STATE_INVALID) 2256255570Strasz continue; 2257255570Strasz cfiscsi_target_hold(ct); 2258255570Strasz mtx_unlock(&softc->lock); 2259255570Strasz free(newct, M_CFISCSI); 2260255570Strasz return (ct); 2261255570Strasz } 2262255570Strasz 2263255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) 2264268685Smav newct->ct_luns[i] = UINT32_MAX; 2265255570Strasz 2266255570Strasz strlcpy(newct->ct_name, name, sizeof(newct->ct_name)); 2267255570Strasz if (alias != NULL) 2268255570Strasz strlcpy(newct->ct_alias, alias, sizeof(newct->ct_alias)); 2269255570Strasz refcount_init(&newct->ct_refcount, 1); 2270255570Strasz newct->ct_softc = softc; 2271273319Smav if (TAILQ_EMPTY(&softc->targets)) 2272273319Smav softc->last_target_id = 0; 2273273319Smav newct->ct_target_id = ++softc->last_target_id; 2274255570Strasz TAILQ_INSERT_TAIL(&softc->targets, newct, ct_next); 2275255570Strasz mtx_unlock(&softc->lock); 2276255570Strasz 2277255570Strasz return (newct); 2278255570Strasz} 2279255570Strasz 2280255570Strasz/* 2281255570Strasz * Takes LUN from the target space and returns LUN from the CTL space. 2282255570Strasz */ 2283255570Straszstatic uint32_t 2284268685Smavcfiscsi_lun_map(void *arg, uint32_t lun) 2285255570Strasz{ 2286268685Smav struct cfiscsi_target *ct = arg; 2287255570Strasz 2288255570Strasz if (lun >= CTL_MAX_LUNS) { 2289255570Strasz CFISCSI_DEBUG("requested lun number %d is higher " 2290255570Strasz "than maximum %d", lun, CTL_MAX_LUNS - 1); 2291268685Smav return (UINT32_MAX); 2292255570Strasz } 2293268685Smav return (ct->ct_luns[lun]); 2294255570Strasz} 2295255570Strasz 2296255570Straszstatic int 2297255570Straszcfiscsi_target_set_lun(struct cfiscsi_target *ct, 2298255570Strasz unsigned long lun_id, unsigned long ctl_lun_id) 2299255570Strasz{ 2300255570Strasz 2301255570Strasz if (lun_id >= CTL_MAX_LUNS) { 2302255570Strasz CFISCSI_WARN("requested lun number %ld is higher " 2303255570Strasz "than maximum %d", lun_id, CTL_MAX_LUNS - 1); 2304255570Strasz return (-1); 2305255570Strasz } 2306255570Strasz 2307268685Smav if (ct->ct_luns[lun_id] < CTL_MAX_LUNS) { 2308255570Strasz /* 2309255570Strasz * CTL calls cfiscsi_lun_enable() twice for each LUN - once 2310255570Strasz * when the LUN is created, and a second time just before 2311255570Strasz * the port is brought online; don't emit warnings 2312255570Strasz * for that case. 2313255570Strasz */ 2314255570Strasz if (ct->ct_luns[lun_id] == ctl_lun_id) 2315255570Strasz return (0); 2316255570Strasz CFISCSI_WARN("lun %ld already allocated", lun_id); 2317255570Strasz return (-1); 2318255570Strasz } 2319255570Strasz 2320255570Strasz#if 0 2321255570Strasz CFISCSI_DEBUG("adding mapping for lun %ld, target %s " 2322255570Strasz "to ctl lun %ld", lun_id, ct->ct_name, ctl_lun_id); 2323255570Strasz#endif 2324255570Strasz 2325255570Strasz ct->ct_luns[lun_id] = ctl_lun_id; 2326255570Strasz 2327255570Strasz return (0); 2328255570Strasz} 2329255570Strasz 2330255570Straszstatic int 2331255570Straszcfiscsi_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 2332255570Strasz{ 2333255570Strasz struct cfiscsi_softc *softc; 2334255570Strasz struct cfiscsi_target *ct; 2335268682Smav const char *target = NULL; 2336255570Strasz const char *lun = NULL; 2337255570Strasz unsigned long tmp; 2338255570Strasz 2339268682Smav ct = (struct cfiscsi_target *)arg; 2340268682Smav softc = ct->ct_softc; 2341255570Strasz 2342268678Smav target = ctl_get_opt(&control_softc->ctl_luns[lun_id]->be_lun->options, 2343268143Smav "cfiscsi_target"); 2344268678Smav lun = ctl_get_opt(&control_softc->ctl_luns[lun_id]->be_lun->options, 2345268143Smav "cfiscsi_lun"); 2346255570Strasz 2347255570Strasz if (target == NULL && lun == NULL) 2348255570Strasz return (0); 2349255570Strasz 2350255570Strasz if (target == NULL || lun == NULL) { 2351255570Strasz CFISCSI_WARN("lun added with cfiscsi_target, but without " 2352255570Strasz "cfiscsi_lun, or the other way around; ignoring"); 2353255570Strasz return (0); 2354255570Strasz } 2355255570Strasz 2356268682Smav if (strcmp(target, ct->ct_name) != 0) 2357255570Strasz return (0); 2358255570Strasz 2359255570Strasz tmp = strtoul(lun, NULL, 10); 2360255570Strasz cfiscsi_target_set_lun(ct, tmp, lun_id); 2361255570Strasz return (0); 2362255570Strasz} 2363255570Strasz 2364255570Straszstatic int 2365255570Straszcfiscsi_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 2366255570Strasz{ 2367255570Strasz struct cfiscsi_softc *softc; 2368255570Strasz struct cfiscsi_target *ct; 2369255570Strasz int i; 2370255570Strasz 2371268682Smav ct = (struct cfiscsi_target *)arg; 2372268682Smav softc = ct->ct_softc; 2373255570Strasz 2374255570Strasz mtx_lock(&softc->lock); 2375268682Smav for (i = 0; i < CTL_MAX_LUNS; i++) { 2376268682Smav if (ct->ct_luns[i] != lun_id) 2377268682Smav continue; 2378268685Smav ct->ct_luns[i] = UINT32_MAX; 2379268682Smav break; 2380255570Strasz } 2381255570Strasz mtx_unlock(&softc->lock); 2382255570Strasz return (0); 2383255570Strasz} 2384255570Strasz 2385255570Straszstatic void 2386256065Straszcfiscsi_datamove_in(union ctl_io *io) 2387255570Strasz{ 2388255570Strasz struct cfiscsi_session *cs; 2389255570Strasz struct icl_pdu *request, *response; 2390255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 2391255570Strasz struct iscsi_bhs_data_in *bhsdi; 2392255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2393265490Strasz size_t len, expected_len, sg_len, buffer_offset; 2394265490Strasz const char *sg_addr; 2395255824Strasz int ctl_sg_count, error, i; 2396255570Strasz 2397255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2398255570Strasz cs = PDU_SESSION(request); 2399255570Strasz 2400255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2401255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2402255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2403255570Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2404255570Strasz 2405255570Strasz if (io->scsiio.kern_sg_entries > 0) { 2406255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2407255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 2408255570Strasz } else { 2409255570Strasz ctl_sglist = &ctl_sg_entry; 2410255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 2411255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 2412255570Strasz ctl_sg_count = 1; 2413255570Strasz } 2414255570Strasz 2415255570Strasz /* 2416265490Strasz * This is the total amount of data to be transferred within the current 2417265490Strasz * SCSI command. We need to record it so that we can properly report 2418255570Strasz * underflow/underflow. 2419255570Strasz */ 2420255570Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2421255570Strasz 2422256065Strasz /* 2423265490Strasz * This is the offset within the current SCSI command; for the first 2424265490Strasz * call to cfiscsi_datamove() it will be 0, and for subsequent ones 2425265640Smav * it will be the sum of lengths of previous ones. 2426256065Strasz */ 2427265490Strasz buffer_offset = io->scsiio.kern_rel_offset; 2428255570Strasz 2429265490Strasz /* 2430265490Strasz * This is the transfer length expected by the initiator. In theory, 2431265490Strasz * it could be different from the correct amount of data from the SCSI 2432265490Strasz * point of view, even if that doesn't make any sense. 2433265490Strasz */ 2434265490Strasz expected_len = ntohl(bhssc->bhssc_expected_data_transfer_length); 2435265490Strasz#if 0 2436265640Smav if (expected_len != io->scsiio.kern_total_len) { 2437265640Smav CFISCSI_SESSION_DEBUG(cs, "expected transfer length %zd, " 2438265640Smav "actual length %zd", expected_len, 2439265640Smav (size_t)io->scsiio.kern_total_len); 2440265640Smav } 2441265490Strasz#endif 2442265490Strasz 2443265490Strasz if (buffer_offset >= expected_len) { 2444265490Strasz#if 0 2445265490Strasz CFISCSI_SESSION_DEBUG(cs, "buffer_offset = %zd, " 2446265490Strasz "already sent the expected len", buffer_offset); 2447265490Strasz#endif 2448265490Strasz io->scsiio.be_move_done(io); 2449265490Strasz return; 2450265490Strasz } 2451265490Strasz 2452256065Strasz i = 0; 2453265490Strasz sg_addr = NULL; 2454265490Strasz sg_len = 0; 2455256065Strasz response = NULL; 2456256065Strasz bhsdi = NULL; 2457256065Strasz for (;;) { 2458256065Strasz if (response == NULL) { 2459256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2460255570Strasz if (response == NULL) { 2461255824Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2462255824Strasz "allocate memory; dropping connection"); 2463256163Strasz ctl_set_busy(&io->scsiio); 2464256163Strasz io->scsiio.be_move_done(io); 2465255824Strasz cfiscsi_session_terminate(cs); 2466255824Strasz return; 2467255824Strasz } 2468256065Strasz bhsdi = (struct iscsi_bhs_data_in *)response->ip_bhs; 2469256065Strasz bhsdi->bhsdi_opcode = ISCSI_BHS_OPCODE_SCSI_DATA_IN; 2470256065Strasz bhsdi->bhsdi_initiator_task_tag = 2471256065Strasz bhssc->bhssc_initiator_task_tag; 2472256065Strasz bhsdi->bhsdi_datasn = htonl(PDU_EXPDATASN(request)); 2473256065Strasz PDU_EXPDATASN(request)++; 2474265490Strasz bhsdi->bhsdi_buffer_offset = htonl(buffer_offset); 2475256065Strasz } 2476255570Strasz 2477265490Strasz KASSERT(i < ctl_sg_count, ("i >= ctl_sg_count")); 2478265490Strasz if (sg_len == 0) { 2479265490Strasz sg_addr = ctl_sglist[i].addr; 2480265490Strasz sg_len = ctl_sglist[i].len; 2481265490Strasz KASSERT(sg_len > 0, ("sg_len <= 0")); 2482256065Strasz } 2483255570Strasz 2484265490Strasz len = sg_len; 2485265490Strasz 2486265490Strasz /* 2487265490Strasz * Truncate to maximum data segment length. 2488265490Strasz */ 2489265490Strasz KASSERT(response->ip_data_len < cs->cs_max_data_segment_length, 2490265640Smav ("ip_data_len %zd >= max_data_segment_length %zd", 2491265490Strasz response->ip_data_len, cs->cs_max_data_segment_length)); 2492265490Strasz if (response->ip_data_len + len > 2493265640Smav cs->cs_max_data_segment_length) { 2494265490Strasz len = cs->cs_max_data_segment_length - 2495256065Strasz response->ip_data_len; 2496265640Smav KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2497265640Smav len, sg_len)); 2498265640Smav } 2499265490Strasz 2500265490Strasz /* 2501265490Strasz * Truncate to expected data transfer length. 2502265490Strasz */ 2503265490Strasz KASSERT(buffer_offset + response->ip_data_len < expected_len, 2504265640Smav ("buffer_offset %zd + ip_data_len %zd >= expected_len %zd", 2505265640Smav buffer_offset, response->ip_data_len, expected_len)); 2506265490Strasz if (buffer_offset + response->ip_data_len + len > expected_len) { 2507265490Strasz CFISCSI_SESSION_DEBUG(cs, "truncating from %zd " 2508265490Strasz "to expected data transfer length %zd", 2509265490Strasz buffer_offset + response->ip_data_len + len, expected_len); 2510265490Strasz len = expected_len - (buffer_offset + response->ip_data_len); 2511265640Smav KASSERT(len <= sg_len, ("len %zd > sg_len %zd", 2512265640Smav len, sg_len)); 2513265490Strasz } 2514265490Strasz 2515265490Strasz error = icl_pdu_append_data(response, sg_addr, len, M_NOWAIT); 2516256065Strasz if (error != 0) { 2517256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2518256065Strasz "allocate memory; dropping connection"); 2519256065Strasz icl_pdu_free(response); 2520256163Strasz ctl_set_busy(&io->scsiio); 2521256163Strasz io->scsiio.be_move_done(io); 2522256065Strasz cfiscsi_session_terminate(cs); 2523256065Strasz return; 2524256065Strasz } 2525265490Strasz sg_addr += len; 2526265490Strasz sg_len -= len; 2527256065Strasz 2528272101Smav KASSERT(buffer_offset + response->ip_data_len <= expected_len, 2529265640Smav ("buffer_offset %zd + ip_data_len %zd > expected_len %zd", 2530272101Smav buffer_offset, response->ip_data_len, expected_len)); 2531272101Smav if (buffer_offset + response->ip_data_len == expected_len) { 2532256065Strasz /* 2533265490Strasz * Already have the amount of data the initiator wanted. 2534265490Strasz */ 2535265490Strasz break; 2536265490Strasz } 2537265490Strasz 2538265490Strasz if (sg_len == 0) { 2539265490Strasz /* 2540256065Strasz * End of scatter-gather segment; 2541256065Strasz * proceed to the next one... 2542256065Strasz */ 2543256065Strasz if (i == ctl_sg_count - 1) { 2544255570Strasz /* 2545256065Strasz * ... unless this was the last one. 2546255570Strasz */ 2547256065Strasz break; 2548255570Strasz } 2549256065Strasz i++; 2550255570Strasz } 2551256065Strasz 2552256065Strasz if (response->ip_data_len == cs->cs_max_data_segment_length) { 2553256065Strasz /* 2554256065Strasz * Can't stuff more data into the current PDU; 2555256065Strasz * queue it. Note that's not enough to check 2556256195Strasz * for kern_data_resid == 0 instead; there 2557256065Strasz * may be several Data-In PDUs for the final 2558256065Strasz * call to cfiscsi_datamove(), and we want 2559256065Strasz * to set the F flag only on the last of them. 2560256065Strasz */ 2561265640Smav buffer_offset += response->ip_data_len; 2562265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2563265490Strasz buffer_offset == expected_len) 2564255570Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2565255570Strasz cfiscsi_pdu_queue(response); 2566256065Strasz response = NULL; 2567256065Strasz bhsdi = NULL; 2568255570Strasz } 2569256065Strasz } 2570256065Strasz if (response != NULL) { 2571265640Smav buffer_offset += response->ip_data_len; 2572265490Strasz if (buffer_offset == io->scsiio.kern_total_len || 2573265490Strasz buffer_offset == expected_len) 2574256065Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2575256065Strasz KASSERT(response->ip_data_len > 0, ("sending empty Data-In")); 2576256065Strasz cfiscsi_pdu_queue(response); 2577256065Strasz } 2578255570Strasz 2579256065Strasz io->scsiio.be_move_done(io); 2580256065Strasz} 2581255570Strasz 2582256065Straszstatic void 2583256065Straszcfiscsi_datamove_out(union ctl_io *io) 2584256065Strasz{ 2585256065Strasz struct cfiscsi_session *cs; 2586256065Strasz struct icl_pdu *request, *response; 2587256065Strasz const struct iscsi_bhs_scsi_command *bhssc; 2588256065Strasz struct iscsi_bhs_r2t *bhsr2t; 2589256065Strasz struct cfiscsi_data_wait *cdw; 2590273310Smav struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2591273310Smav uint32_t expected_len, r2t_off, r2t_len; 2592256065Strasz uint32_t target_transfer_tag; 2593256065Strasz bool done; 2594256065Strasz 2595256065Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2596256065Strasz cs = PDU_SESSION(request); 2597256065Strasz 2598256065Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2599256065Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2600256065Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2601256065Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2602256065Strasz 2603256065Strasz /* 2604256065Strasz * We need to record it so that we can properly report 2605256065Strasz * underflow/underflow. 2606256065Strasz */ 2607256065Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2608256065Strasz 2609265640Smav /* 2610273310Smav * Report write underflow as error since CTL and backends don't 2611273310Smav * really support it, and SCSI does not tell how to do it right. 2612265640Smav */ 2613273310Smav expected_len = ntohl(bhssc->bhssc_expected_data_transfer_length); 2614273310Smav if (io->scsiio.kern_rel_offset + io->scsiio.kern_data_len > 2615273310Smav expected_len) { 2616273310Smav io->scsiio.io_hdr.port_status = 43; 2617273310Smav io->scsiio.be_move_done(io); 2618273310Smav return; 2619273310Smav } 2620265640Smav 2621265497Strasz target_transfer_tag = 2622265497Strasz atomic_fetchadd_32(&cs->cs_target_transfer_tag, 1); 2623256065Strasz 2624255570Strasz#if 0 2625256065Strasz CFISCSI_SESSION_DEBUG(cs, "expecting Data-Out with initiator " 2626256065Strasz "task tag 0x%x, target transfer tag 0x%x", 2627256065Strasz bhssc->bhssc_initiator_task_tag, target_transfer_tag); 2628255570Strasz#endif 2629256065Strasz cdw = uma_zalloc(cfiscsi_data_wait_zone, M_NOWAIT | M_ZERO); 2630256065Strasz if (cdw == NULL) { 2631256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2632256065Strasz "allocate memory; dropping connection"); 2633256163Strasz ctl_set_busy(&io->scsiio); 2634256163Strasz io->scsiio.be_move_done(io); 2635256065Strasz cfiscsi_session_terminate(cs); 2636256163Strasz return; 2637256065Strasz } 2638256065Strasz cdw->cdw_ctl_io = io; 2639265489Strasz cdw->cdw_target_transfer_tag = target_transfer_tag; 2640256065Strasz cdw->cdw_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2641273310Smav cdw->cdw_r2t_end = io->scsiio.kern_data_len; 2642256065Strasz 2643273310Smav /* Set initial data pointer for the CDW respecting ext_data_filled. */ 2644273310Smav if (io->scsiio.kern_sg_entries > 0) { 2645273310Smav ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2646273310Smav } else { 2647273310Smav ctl_sglist = &ctl_sg_entry; 2648273310Smav ctl_sglist->addr = io->scsiio.kern_data_ptr; 2649273310Smav ctl_sglist->len = io->scsiio.kern_data_len; 2650273310Smav } 2651273310Smav cdw->cdw_sg_index = 0; 2652273310Smav cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 2653273310Smav cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 2654273310Smav r2t_off = io->scsiio.ext_data_filled; 2655273310Smav while (r2t_off > 0) { 2656273310Smav if (r2t_off >= cdw->cdw_sg_len) { 2657273310Smav r2t_off -= cdw->cdw_sg_len; 2658273310Smav cdw->cdw_sg_index++; 2659273310Smav cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 2660273310Smav cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 2661273310Smav continue; 2662273310Smav } 2663273310Smav cdw->cdw_sg_addr += r2t_off; 2664273310Smav cdw->cdw_sg_len -= r2t_off; 2665273310Smav r2t_off = 0; 2666273310Smav } 2667273310Smav 2668273310Smav if (cs->cs_immediate_data && 2669273310Smav io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled < 2670268141Smav icl_pdu_data_segment_length(request)) { 2671256065Strasz done = cfiscsi_handle_data_segment(request, cdw); 2672256065Strasz if (done) { 2673256065Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2674256065Strasz io->scsiio.be_move_done(io); 2675256065Strasz return; 2676255837Strasz } 2677256065Strasz } 2678255570Strasz 2679273310Smav r2t_off = io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled; 2680273310Smav r2t_len = MIN(io->scsiio.kern_data_len - io->scsiio.ext_data_filled, 2681273310Smav cs->cs_max_burst_length); 2682273310Smav cdw->cdw_r2t_end = io->scsiio.ext_data_filled + r2t_len; 2683273310Smav 2684256065Strasz CFISCSI_SESSION_LOCK(cs); 2685256065Strasz TAILQ_INSERT_TAIL(&cs->cs_waiting_for_data_out, cdw, cdw_next); 2686256065Strasz CFISCSI_SESSION_UNLOCK(cs); 2687255570Strasz 2688256065Strasz /* 2689256065Strasz * XXX: We should limit the number of outstanding R2T PDUs 2690256065Strasz * per task to MaxOutstandingR2T. 2691256065Strasz */ 2692256065Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2693256065Strasz if (response == NULL) { 2694256065Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2695256065Strasz "allocate memory; dropping connection"); 2696256163Strasz ctl_set_busy(&io->scsiio); 2697256163Strasz io->scsiio.be_move_done(io); 2698256065Strasz cfiscsi_session_terminate(cs); 2699256163Strasz return; 2700255570Strasz } 2701256065Strasz bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 2702256065Strasz bhsr2t->bhsr2t_opcode = ISCSI_BHS_OPCODE_R2T; 2703256065Strasz bhsr2t->bhsr2t_flags = 0x80; 2704256065Strasz bhsr2t->bhsr2t_lun = bhssc->bhssc_lun; 2705256065Strasz bhsr2t->bhsr2t_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2706265489Strasz bhsr2t->bhsr2t_target_transfer_tag = target_transfer_tag; 2707256065Strasz /* 2708256065Strasz * XXX: Here we assume that cfiscsi_datamove() won't ever 2709256065Strasz * be running concurrently on several CPUs for a given 2710256065Strasz * command. 2711256065Strasz */ 2712256065Strasz bhsr2t->bhsr2t_r2tsn = htonl(PDU_R2TSN(request)); 2713256065Strasz PDU_R2TSN(request)++; 2714256065Strasz /* 2715256065Strasz * This is the offset within the current SCSI command; 2716256065Strasz * i.e. for the first call of datamove(), it will be 0, 2717256065Strasz * and for subsequent ones it will be the sum of lengths 2718256065Strasz * of previous ones. 2719256065Strasz * 2720256065Strasz * The ext_data_filled is to account for unsolicited 2721256065Strasz * (immediate) data that might have already arrived. 2722256065Strasz */ 2723273310Smav bhsr2t->bhsr2t_buffer_offset = htonl(r2t_off); 2724256065Strasz /* 2725256065Strasz * This is the total length (sum of S/G lengths) this call 2726273310Smav * to cfiscsi_datamove() is supposed to handle, limited by 2727273310Smav * MaxBurstLength. 2728256065Strasz */ 2729273310Smav bhsr2t->bhsr2t_desired_data_transfer_length = htonl(r2t_len); 2730256065Strasz cfiscsi_pdu_queue(response); 2731255570Strasz} 2732255570Strasz 2733255570Straszstatic void 2734256065Straszcfiscsi_datamove(union ctl_io *io) 2735256065Strasz{ 2736256065Strasz 2737256065Strasz if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) 2738256065Strasz cfiscsi_datamove_in(io); 2739273310Smav else { 2740273310Smav /* We hadn't received anything during this datamove yet. */ 2741273310Smav io->scsiio.ext_data_filled = 0; 2742256065Strasz cfiscsi_datamove_out(io); 2743273310Smav } 2744256065Strasz} 2745256065Strasz 2746256065Straszstatic void 2747255570Straszcfiscsi_scsi_command_done(union ctl_io *io) 2748255570Strasz{ 2749255570Strasz struct icl_pdu *request, *response; 2750255570Strasz struct iscsi_bhs_scsi_command *bhssc; 2751255570Strasz struct iscsi_bhs_scsi_response *bhssr; 2752255570Strasz#ifdef DIAGNOSTIC 2753255570Strasz struct cfiscsi_data_wait *cdw; 2754255570Strasz#endif 2755255570Strasz struct cfiscsi_session *cs; 2756255570Strasz uint16_t sense_length; 2757255570Strasz 2758255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2759255570Strasz cs = PDU_SESSION(request); 2760255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2761255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2762255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2763255570Strasz ("replying to wrong opcode 0x%x", bhssc->bhssc_opcode)); 2764255570Strasz 2765255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 2766255570Strasz // bhssc->bhssc_initiator_task_tag); 2767255570Strasz 2768255570Strasz#ifdef DIAGNOSTIC 2769255570Strasz CFISCSI_SESSION_LOCK(cs); 2770255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) 2771255570Strasz KASSERT(bhssc->bhssc_initiator_task_tag != 2772255570Strasz cdw->cdw_initiator_task_tag, ("dangling cdw")); 2773255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2774255570Strasz#endif 2775255570Strasz 2776268554Smav /* 2777268554Smav * Do not return status for aborted commands. 2778268554Smav * There are exceptions, but none supported by CTL yet. 2779268554Smav */ 2780269296Smav if ((io->io_hdr.flags & CTL_FLAG_ABORT) && 2781268697Smav (io->io_hdr.flags & CTL_FLAG_ABORT_STATUS) == 0) { 2782268554Smav ctl_free_io(io); 2783268554Smav icl_pdu_free(request); 2784268554Smav return; 2785268554Smav } 2786268554Smav 2787255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2788255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 2789255570Strasz bhssr->bhssr_opcode = ISCSI_BHS_OPCODE_SCSI_RESPONSE; 2790255570Strasz bhssr->bhssr_flags = 0x80; 2791255570Strasz /* 2792255570Strasz * XXX: We don't deal with bidirectional under/overflows; 2793255570Strasz * does anything actually support those? 2794255570Strasz */ 2795255570Strasz if (PDU_TOTAL_TRANSFER_LEN(request) < 2796255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2797255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_UNDERFLOW; 2798255570Strasz bhssr->bhssr_residual_count = 2799255570Strasz htonl(ntohl(bhssc->bhssc_expected_data_transfer_length) - 2800255570Strasz PDU_TOTAL_TRANSFER_LEN(request)); 2801255570Strasz //CFISCSI_SESSION_DEBUG(cs, "underflow; residual count %d", 2802255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2803255570Strasz } else if (PDU_TOTAL_TRANSFER_LEN(request) > 2804255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2805255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_OVERFLOW; 2806255570Strasz bhssr->bhssr_residual_count = 2807255570Strasz htonl(PDU_TOTAL_TRANSFER_LEN(request) - 2808255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)); 2809255570Strasz //CFISCSI_SESSION_DEBUG(cs, "overflow; residual count %d", 2810255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2811255570Strasz } 2812255570Strasz bhssr->bhssr_response = BHSSR_RESPONSE_COMMAND_COMPLETED; 2813255570Strasz bhssr->bhssr_status = io->scsiio.scsi_status; 2814255570Strasz bhssr->bhssr_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2815255570Strasz bhssr->bhssr_expdatasn = htonl(PDU_EXPDATASN(request)); 2816255570Strasz 2817255570Strasz if (io->scsiio.sense_len > 0) { 2818255570Strasz#if 0 2819255570Strasz CFISCSI_SESSION_DEBUG(cs, "returning %d bytes of sense data", 2820255570Strasz io->scsiio.sense_len); 2821255570Strasz#endif 2822255570Strasz sense_length = htons(io->scsiio.sense_len); 2823255570Strasz icl_pdu_append_data(response, 2824255570Strasz &sense_length, sizeof(sense_length), M_WAITOK); 2825255570Strasz icl_pdu_append_data(response, 2826255570Strasz &io->scsiio.sense_data, io->scsiio.sense_len, M_WAITOK); 2827255570Strasz } 2828255570Strasz 2829255570Strasz ctl_free_io(io); 2830255570Strasz icl_pdu_free(request); 2831255570Strasz cfiscsi_pdu_queue(response); 2832255570Strasz} 2833255570Strasz 2834255570Straszstatic void 2835255570Straszcfiscsi_task_management_done(union ctl_io *io) 2836255570Strasz{ 2837255570Strasz struct icl_pdu *request, *response; 2838255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 2839255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 2840255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 2841255570Strasz struct cfiscsi_session *cs; 2842255570Strasz 2843255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2844255570Strasz cs = PDU_SESSION(request); 2845255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2846255570Strasz KASSERT((bhstmr->bhstmr_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2847255570Strasz ISCSI_BHS_OPCODE_TASK_REQUEST, 2848255570Strasz ("replying to wrong opcode 0x%x", bhstmr->bhstmr_opcode)); 2849255570Strasz 2850255570Strasz#if 0 2851255570Strasz CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x; referenced task tag 0x%x", 2852255570Strasz bhstmr->bhstmr_initiator_task_tag, 2853255570Strasz bhstmr->bhstmr_referenced_task_tag); 2854255570Strasz#endif 2855255570Strasz 2856255570Strasz if ((bhstmr->bhstmr_function & ~0x80) == 2857255570Strasz BHSTMR_FUNCTION_ABORT_TASK) { 2858255570Strasz /* 2859255570Strasz * Make sure we no longer wait for Data-Out for this command. 2860255570Strasz */ 2861255570Strasz CFISCSI_SESSION_LOCK(cs); 2862255570Strasz TAILQ_FOREACH_SAFE(cdw, 2863255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 2864255570Strasz if (bhstmr->bhstmr_referenced_task_tag != 2865255570Strasz cdw->cdw_initiator_task_tag) 2866255570Strasz continue; 2867255570Strasz 2868255570Strasz#if 0 2869255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task " 2870255570Strasz "tag 0x%x", bhstmr->bhstmr_initiator_task_tag); 2871255570Strasz#endif 2872255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, 2873255570Strasz cdw, cdw_next); 2874255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 2875255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2876255570Strasz } 2877255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2878255570Strasz } 2879255570Strasz 2880255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2881255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 2882255570Strasz response->ip_bhs; 2883255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 2884255570Strasz bhstmr2->bhstmr_flags = 0x80; 2885255570Strasz if (io->io_hdr.status == CTL_SUCCESS) { 2886255570Strasz bhstmr2->bhstmr_response = BHSTMR_RESPONSE_FUNCTION_COMPLETE; 2887255570Strasz } else { 2888255570Strasz /* 2889255570Strasz * XXX: How to figure out what exactly went wrong? iSCSI spec 2890255570Strasz * expects us to provide detailed error, e.g. "Task does 2891255570Strasz * not exist" or "LUN does not exist". 2892255570Strasz */ 2893255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED"); 2894255570Strasz bhstmr2->bhstmr_response = 2895255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 2896255570Strasz } 2897255570Strasz bhstmr2->bhstmr_initiator_task_tag = bhstmr->bhstmr_initiator_task_tag; 2898255570Strasz 2899255570Strasz ctl_free_io(io); 2900255570Strasz icl_pdu_free(request); 2901255570Strasz cfiscsi_pdu_queue(response); 2902255570Strasz} 2903255570Strasz 2904255570Straszstatic void 2905255570Straszcfiscsi_done(union ctl_io *io) 2906255570Strasz{ 2907255570Strasz struct icl_pdu *request; 2908255570Strasz struct cfiscsi_session *cs; 2909255570Strasz 2910255570Strasz KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 2911255570Strasz ("invalid CTL status %#x", io->io_hdr.status)); 2912255570Strasz 2913268690Smav if (io->io_hdr.io_type == CTL_IO_TASK && 2914268690Smav io->taskio.task_action == CTL_TASK_I_T_NEXUS_RESET) { 2915255570Strasz /* 2916255570Strasz * Implicit task termination has just completed; nothing to do. 2917255570Strasz */ 2918268690Smav cs = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2919268691Smav cs->cs_tasks_aborted = true; 2920268690Smav refcount_release(&cs->cs_outstanding_ctl_pdus); 2921268691Smav wakeup(__DEVOLATILE(void *, &cs->cs_outstanding_ctl_pdus)); 2922268690Smav ctl_free_io(io); 2923255570Strasz return; 2924255570Strasz } 2925255570Strasz 2926268690Smav request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2927255570Strasz cs = PDU_SESSION(request); 2928255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 2929255570Strasz 2930255570Strasz switch (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) { 2931255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 2932255570Strasz cfiscsi_scsi_command_done(io); 2933255570Strasz break; 2934255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 2935255570Strasz cfiscsi_task_management_done(io); 2936255570Strasz break; 2937255570Strasz default: 2938255570Strasz panic("cfiscsi_done called with wrong opcode 0x%x", 2939255570Strasz request->ip_bhs->bhs_opcode); 2940255570Strasz } 2941255570Strasz} 2942