ctl_frontend_iscsi.c revision 255848
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: head/sys/cam/ctl/ctl_frontend_iscsi.c 255848 2013-09-24 13:46:13Z trasz $ 30255570Strasz */ 31255570Strasz 32255570Strasz/* 33255570Strasz * CTL frontend for the iSCSI protocol. 34255570Strasz */ 35255570Strasz 36255570Strasz#include <sys/cdefs.h> 37255570Strasz__FBSDID("$FreeBSD: head/sys/cam/ctl/ctl_frontend_iscsi.c 255848 2013-09-24 13:46:13Z trasz $"); 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> 62255570Strasz#include <cam/ctl/ctl_frontend.h> 63255570Strasz#include <cam/ctl/ctl_frontend_internal.h> 64255570Strasz#include <cam/ctl/ctl_debug.h> 65255570Strasz#include <cam/ctl/ctl_ha.h> 66255570Strasz#include <cam/ctl/ctl_ioctl.h> 67255570Strasz#include <cam/ctl/ctl_private.h> 68255570Strasz 69255570Strasz#include "../../dev/iscsi/icl.h" 70255570Strasz#include "../../dev/iscsi/iscsi_proto.h" 71255570Strasz#include "ctl_frontend_iscsi.h" 72255570Strasz 73255570Strasz#ifdef ICL_KERNEL_PROXY 74255570Strasz#include <sys/socketvar.h> 75255570Strasz#endif 76255570Strasz 77255570Straszstatic MALLOC_DEFINE(M_CFISCSI, "cfiscsi", "Memory used for CTL iSCSI frontend"); 78255570Straszstatic uma_zone_t cfiscsi_data_wait_zone; 79255570Strasz 80255570StraszSYSCTL_NODE(_kern_cam_ctl, OID_AUTO, iscsi, CTLFLAG_RD, 0, 81255570Strasz "CAM Target Layer iSCSI Frontend"); 82255570Straszstatic int debug = 3; 83255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.debug", &debug); 84255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, debug, CTLFLAG_RW, 85255570Strasz &debug, 1, "Enable debug messages"); 86255570Straszstatic int ping_timeout = 5; 87255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.ping_timeout", &ping_timeout); 88255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, ping_timeout, CTLFLAG_RW, 89255570Strasz &ping_timeout, 5, "Interval between ping (NOP-Out) requests, in seconds"); 90255570Straszstatic int login_timeout = 60; 91255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.login_timeout", &login_timeout); 92255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, login_timeout, CTLFLAG_RW, 93255570Strasz &login_timeout, 60, "Time to wait for ctld(8) to finish Login Phase, in seconds"); 94255570Straszstatic int maxcmdsn_delta = 256; 95255570StraszTUNABLE_INT("kern.cam.ctl.iscsi.maxcmdsn_delta", &maxcmdsn_delta); 96255570StraszSYSCTL_INT(_kern_cam_ctl_iscsi, OID_AUTO, maxcmdsn_delta, CTLFLAG_RW, 97255570Strasz &maxcmdsn_delta, 256, "Number of commands the initiator can send " 98255570Strasz "without confirmation"); 99255570Strasz 100255570Strasz#define CFISCSI_DEBUG(X, ...) \ 101255570Strasz if (debug > 1) { \ 102255570Strasz printf("%s: " X "\n", __func__, ## __VA_ARGS__);\ 103255570Strasz } while (0) 104255570Strasz 105255570Strasz#define CFISCSI_WARN(X, ...) \ 106255570Strasz if (debug > 0) { \ 107255570Strasz printf("WARNING: %s: " X "\n", \ 108255570Strasz __func__, ## __VA_ARGS__); \ 109255570Strasz } while (0) 110255570Strasz 111255570Strasz#define CFISCSI_SESSION_DEBUG(S, X, ...) \ 112255570Strasz if (debug > 1) { \ 113255570Strasz printf("%s: %s (%s): " X "\n", \ 114255570Strasz __func__, S->cs_initiator_addr, \ 115255570Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 116255570Strasz } while (0) 117255570Strasz 118255570Strasz#define CFISCSI_SESSION_WARN(S, X, ...) \ 119255570Strasz if (debug > 0) { \ 120255570Strasz printf("WARNING: %s (%s): " X "\n", \ 121255570Strasz S->cs_initiator_addr, \ 122255570Strasz S->cs_initiator_name, ## __VA_ARGS__); \ 123255570Strasz } while (0) 124255570Strasz 125255570Strasz#define CFISCSI_SESSION_LOCK(X) mtx_lock(&X->cs_lock) 126255570Strasz#define CFISCSI_SESSION_UNLOCK(X) mtx_unlock(&X->cs_lock) 127255570Strasz#define CFISCSI_SESSION_LOCK_ASSERT(X) mtx_assert(&X->cs_lock, MA_OWNED) 128255570Strasz 129255570Strasz#define CONN_SESSION(X) ((struct cfiscsi_session *)(X)->ic_prv0) 130255570Strasz#define PDU_SESSION(X) CONN_SESSION((X)->ip_conn) 131255570Strasz#define PDU_EXPDATASN(X) (X)->ip_prv0 132255570Strasz#define PDU_TOTAL_TRANSFER_LEN(X) (X)->ip_prv1 133255570Strasz#define PDU_R2TSN(X) (X)->ip_prv2 134255570Strasz 135255570Straszint cfiscsi_init(void); 136255570Straszstatic void cfiscsi_online(void *arg); 137255570Straszstatic void cfiscsi_offline(void *arg); 138255570Straszstatic int cfiscsi_targ_enable(void *arg, struct ctl_id targ_id); 139255570Straszstatic int cfiscsi_targ_disable(void *arg, struct ctl_id targ_id); 140255570Straszstatic int cfiscsi_lun_enable(void *arg, 141255570Strasz struct ctl_id target_id, int lun_id); 142255570Straszstatic int cfiscsi_lun_disable(void *arg, 143255570Strasz struct ctl_id target_id, int lun_id); 144255570Straszstatic int cfiscsi_ioctl(struct cdev *dev, 145255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td); 146255570Straszstatic int cfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len); 147255570Straszstatic void cfiscsi_datamove(union ctl_io *io); 148255570Straszstatic void cfiscsi_done(union ctl_io *io); 149255570Straszstatic uint32_t cfiscsi_map_lun(void *arg, uint32_t lun); 150255848Straszstatic bool cfiscsi_pdu_update_cmdsn(const struct icl_pdu *request); 151255570Straszstatic void cfiscsi_pdu_handle_nop_out(struct icl_pdu *request); 152255570Straszstatic void cfiscsi_pdu_handle_scsi_command(struct icl_pdu *request); 153255570Straszstatic void cfiscsi_pdu_handle_task_request(struct icl_pdu *request); 154255570Straszstatic void cfiscsi_pdu_handle_data_out(struct icl_pdu *request); 155255570Straszstatic void cfiscsi_pdu_handle_logout_request(struct icl_pdu *request); 156255570Straszstatic void cfiscsi_session_terminate(struct cfiscsi_session *cs); 157255570Straszstatic struct cfiscsi_target *cfiscsi_target_find(struct cfiscsi_softc 158255570Strasz *softc, const char *name); 159255570Straszstatic void cfiscsi_target_release(struct cfiscsi_target *ct); 160255570Straszstatic void cfiscsi_session_delete(struct cfiscsi_session *cs); 161255570Strasz 162255570Straszstatic struct cfiscsi_softc cfiscsi_softc; 163255570Straszextern struct ctl_softc *control_softc; 164255570Strasz 165255570Straszstatic int cfiscsi_module_event_handler(module_t, int /*modeventtype_t*/, void *); 166255570Strasz 167255570Straszstatic moduledata_t cfiscsi_moduledata = { 168255570Strasz "ctlcfiscsi", 169255570Strasz cfiscsi_module_event_handler, 170255570Strasz NULL 171255570Strasz}; 172255570Strasz 173255570StraszDECLARE_MODULE(ctlcfiscsi, cfiscsi_moduledata, SI_SUB_CONFIGURE, SI_ORDER_FOURTH); 174255570StraszMODULE_VERSION(ctlcfiscsi, 1); 175255570StraszMODULE_DEPEND(ctlcfiscsi, ctl, 1, 1, 1); 176255570StraszMODULE_DEPEND(ctlcfiscsi, icl, 1, 1, 1); 177255570Strasz 178255570Straszstatic struct icl_pdu * 179255570Straszcfiscsi_pdu_new_response(struct icl_pdu *request, int flags) 180255570Strasz{ 181255570Strasz 182255570Strasz return (icl_pdu_new_bhs(request->ip_conn, flags)); 183255570Strasz} 184255570Strasz 185255848Straszstatic bool 186255570Straszcfiscsi_pdu_update_cmdsn(const struct icl_pdu *request) 187255570Strasz{ 188255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 189255570Strasz struct cfiscsi_session *cs; 190255570Strasz uint32_t cmdsn, expstatsn; 191255570Strasz 192255570Strasz cs = PDU_SESSION(request); 193255570Strasz 194255570Strasz /* 195255570Strasz * Every incoming PDU - not just NOP-Out - resets the ping timer. 196255570Strasz * The purpose of the timeout is to reset the connection when it stalls; 197255570Strasz * we don't want this to happen when NOP-In or NOP-Out ends up delayed 198255570Strasz * in some queue. 199255570Strasz * 200255570Strasz * XXX: Locking? 201255570Strasz */ 202255570Strasz cs->cs_timeout = 0; 203255570Strasz 204255570Strasz /* 205255570Strasz * Data-Out PDUs don't contain CmdSN. 206255570Strasz */ 207255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 208255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 209255848Strasz return (false); 210255570Strasz 211255570Strasz /* 212255570Strasz * We're only using fields common for all the request 213255570Strasz * (initiator -> target) PDUs. 214255570Strasz */ 215255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 216255570Strasz cmdsn = ntohl(bhssc->bhssc_cmdsn); 217255570Strasz expstatsn = ntohl(bhssc->bhssc_expstatsn); 218255570Strasz 219255570Strasz CFISCSI_SESSION_LOCK(cs); 220255570Strasz#if 0 221255570Strasz if (expstatsn != cs->cs_statsn) { 222255570Strasz CFISCSI_SESSION_DEBUG(cs, "received PDU with ExpStatSN %d, " 223255570Strasz "while current StatSN is %d", expstatsn, 224255570Strasz cs->cs_statsn); 225255570Strasz } 226255570Strasz#endif 227255570Strasz 228255570Strasz /* 229255848Strasz * The target MUST silently ignore any non-immediate command outside 230255848Strasz * of this range. 231255848Strasz * 232255848Strasz * XXX: ... or non-immediate duplicates within the range. 233255570Strasz */ 234255848Strasz if (cmdsn < cs->cs_cmdsn || cmdsn > cs->cs_cmdsn + maxcmdsn_delta) { 235255848Strasz CFISCSI_SESSION_UNLOCK(cs); 236255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with CmdSN %d, " 237255570Strasz "while expected CmdSN was %d", cmdsn, cs->cs_cmdsn); 238255848Strasz return (true); 239255570Strasz } 240255570Strasz 241255570Strasz if ((request->ip_bhs->bhs_opcode & ISCSI_BHS_OPCODE_IMMEDIATE) == 0) 242255570Strasz cs->cs_cmdsn++; 243255570Strasz 244255570Strasz CFISCSI_SESSION_UNLOCK(cs); 245255848Strasz 246255848Strasz return (false); 247255570Strasz} 248255570Strasz 249255570Straszstatic void 250255570Straszcfiscsi_pdu_handle(struct icl_pdu *request) 251255570Strasz{ 252255570Strasz struct cfiscsi_session *cs; 253255848Strasz bool ignore; 254255570Strasz 255255570Strasz cs = PDU_SESSION(request); 256255570Strasz 257255848Strasz ignore = cfiscsi_pdu_update_cmdsn(request); 258255848Strasz if (ignore) { 259255848Strasz icl_pdu_free(request); 260255848Strasz return; 261255848Strasz } 262255570Strasz 263255570Strasz /* 264255570Strasz * Handle the PDU; this includes e.g. receiving the remaining 265255570Strasz * part of PDU and submitting the SCSI command to CTL 266255570Strasz * or queueing a reply. The handling routine is responsible 267255570Strasz * for freeing the PDU when it's no longer needed. 268255570Strasz */ 269255570Strasz switch (request->ip_bhs->bhs_opcode & 270255570Strasz ~ISCSI_BHS_OPCODE_IMMEDIATE) { 271255570Strasz case ISCSI_BHS_OPCODE_NOP_OUT: 272255570Strasz cfiscsi_pdu_handle_nop_out(request); 273255570Strasz break; 274255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 275255570Strasz cfiscsi_pdu_handle_scsi_command(request); 276255570Strasz break; 277255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 278255570Strasz cfiscsi_pdu_handle_task_request(request); 279255570Strasz break; 280255570Strasz case ISCSI_BHS_OPCODE_SCSI_DATA_OUT: 281255570Strasz cfiscsi_pdu_handle_data_out(request); 282255570Strasz break; 283255570Strasz case ISCSI_BHS_OPCODE_LOGOUT_REQUEST: 284255570Strasz cfiscsi_pdu_handle_logout_request(request); 285255570Strasz break; 286255570Strasz default: 287255570Strasz CFISCSI_SESSION_WARN(cs, "received PDU with unsupported " 288255570Strasz "opcode 0x%x; dropping connection", 289255570Strasz request->ip_bhs->bhs_opcode); 290255570Strasz cfiscsi_session_terminate(cs); 291255570Strasz icl_pdu_free(request); 292255570Strasz } 293255570Strasz 294255570Strasz} 295255570Strasz 296255570Straszstatic void 297255570Straszcfiscsi_receive_callback(struct icl_pdu *request) 298255570Strasz{ 299255570Strasz struct cfiscsi_session *cs; 300255570Strasz 301255570Strasz cs = PDU_SESSION(request); 302255570Strasz 303255570Strasz#ifdef ICL_KERNEL_PROXY 304255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 305255570Strasz if (cs->cs_login_pdu == NULL) 306255570Strasz cs->cs_login_pdu = request; 307255570Strasz else 308255570Strasz icl_pdu_free(request); 309255570Strasz cv_signal(&cs->cs_login_cv); 310255570Strasz return; 311255570Strasz } 312255570Strasz#endif 313255570Strasz 314255570Strasz cfiscsi_pdu_handle(request); 315255570Strasz} 316255570Strasz 317255570Straszstatic void 318255570Straszcfiscsi_error_callback(struct icl_conn *ic) 319255570Strasz{ 320255570Strasz struct cfiscsi_session *cs; 321255570Strasz 322255570Strasz cs = CONN_SESSION(ic); 323255570Strasz 324255570Strasz CFISCSI_SESSION_WARN(cs, "connection error; dropping connection"); 325255570Strasz cfiscsi_session_terminate(cs); 326255570Strasz} 327255570Strasz 328255570Straszstatic int 329255570Straszcfiscsi_pdu_prepare(struct icl_pdu *response) 330255570Strasz{ 331255570Strasz struct cfiscsi_session *cs; 332255570Strasz struct iscsi_bhs_scsi_response *bhssr; 333255570Strasz bool advance_statsn = true; 334255570Strasz 335255570Strasz cs = PDU_SESSION(response); 336255570Strasz 337255570Strasz CFISCSI_SESSION_LOCK_ASSERT(cs); 338255570Strasz 339255570Strasz /* 340255570Strasz * We're only using fields common for all the response 341255570Strasz * (target -> initiator) PDUs. 342255570Strasz */ 343255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 344255570Strasz 345255570Strasz /* 346255570Strasz * 10.8.3: "The StatSN for this connection is not advanced 347255570Strasz * after this PDU is sent." 348255570Strasz */ 349255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_R2T) 350255570Strasz advance_statsn = false; 351255570Strasz 352255570Strasz /* 353255570Strasz * 10.19.2: "However, when the Initiator Task Tag is set to 0xffffffff, 354255570Strasz * StatSN for the connection is not advanced after this PDU is sent." 355255570Strasz */ 356255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_NOP_IN && 357255570Strasz bhssr->bhssr_initiator_task_tag == 0xffffffff) 358255570Strasz advance_statsn = false; 359255570Strasz 360255570Strasz /* 361255570Strasz * See the comment below - StatSN is not meaningful and must 362255570Strasz * not be advanced. 363255570Strasz */ 364255570Strasz if (bhssr->bhssr_opcode == ISCSI_BHS_OPCODE_SCSI_DATA_IN) 365255570Strasz advance_statsn = false; 366255570Strasz 367255570Strasz /* 368255570Strasz * 10.7.3: "The fields StatSN, Status, and Residual Count 369255570Strasz * only have meaningful content if the S bit is set to 1." 370255570Strasz */ 371255570Strasz if (bhssr->bhssr_opcode != ISCSI_BHS_OPCODE_SCSI_DATA_IN) 372255570Strasz bhssr->bhssr_statsn = htonl(cs->cs_statsn); 373255570Strasz bhssr->bhssr_expcmdsn = htonl(cs->cs_cmdsn); 374255570Strasz bhssr->bhssr_maxcmdsn = htonl(cs->cs_cmdsn + maxcmdsn_delta); 375255570Strasz 376255570Strasz if (advance_statsn) 377255570Strasz cs->cs_statsn++; 378255570Strasz 379255570Strasz return (0); 380255570Strasz} 381255570Strasz 382255570Straszstatic void 383255570Straszcfiscsi_pdu_queue(struct icl_pdu *response) 384255570Strasz{ 385255570Strasz struct cfiscsi_session *cs; 386255570Strasz 387255570Strasz cs = PDU_SESSION(response); 388255570Strasz 389255570Strasz CFISCSI_SESSION_LOCK(cs); 390255570Strasz cfiscsi_pdu_prepare(response); 391255570Strasz icl_pdu_queue(response); 392255570Strasz CFISCSI_SESSION_UNLOCK(cs); 393255570Strasz} 394255570Strasz 395255570Straszstatic uint32_t 396255570Straszcfiscsi_decode_lun(uint64_t encoded) 397255570Strasz{ 398255570Strasz uint8_t lun[8]; 399255570Strasz uint32_t result; 400255570Strasz 401255570Strasz /* 402255570Strasz * The LUN field in iSCSI PDUs may look like an ordinary 64 bit number, 403255570Strasz * but is in fact an evil, multidimensional structure defined 404255570Strasz * in SCSI Architecture Model 5 (SAM-5), section 4.6. 405255570Strasz */ 406255570Strasz memcpy(lun, &encoded, sizeof(lun)); 407255570Strasz switch (lun[0] & 0xC0) { 408255570Strasz case 0x00: 409255570Strasz if ((lun[0] & 0x3f) != 0 || lun[2] != 0 || lun[3] != 0 || 410255570Strasz lun[4] != 0 || lun[5] != 0 || lun[6] != 0 || lun[7] != 0) { 411255570Strasz CFISCSI_WARN("malformed LUN " 412255570Strasz "(peripheral device addressing method): 0x%jx", 413255570Strasz (uintmax_t)encoded); 414255570Strasz result = 0xffffffff; 415255570Strasz break; 416255570Strasz } 417255570Strasz result = lun[1]; 418255570Strasz break; 419255570Strasz case 0x40: 420255570Strasz if (lun[2] != 0 || lun[3] != 0 || lun[4] != 0 || lun[5] != 0 || 421255570Strasz lun[6] != 0 || lun[7] != 0) { 422255570Strasz CFISCSI_WARN("malformed LUN " 423255570Strasz "(flat address space addressing method): 0x%jx", 424255570Strasz (uintmax_t)encoded); 425255570Strasz result = 0xffffffff; 426255570Strasz break; 427255570Strasz } 428255570Strasz result = ((lun[0] & 0x3f) << 8) + lun[1]; 429255570Strasz break; 430255570Strasz case 0xC0: 431255570Strasz if (lun[0] != 0xD2 || lun[4] != 0 || lun[5] != 0 || 432255570Strasz lun[6] != 0 || lun[7] != 0) { 433255570Strasz CFISCSI_WARN("malformed LUN (extended flat " 434255570Strasz "address space addressing method): 0x%jx", 435255570Strasz (uintmax_t)encoded); 436255570Strasz result = 0xffffffff; 437255570Strasz break; 438255570Strasz } 439255570Strasz result = (lun[1] << 16) + (lun[2] << 8) + lun[3]; 440255570Strasz default: 441255570Strasz CFISCSI_WARN("unsupported LUN format 0x%jx", 442255570Strasz (uintmax_t)encoded); 443255570Strasz result = 0xffffffff; 444255570Strasz break; 445255570Strasz } 446255570Strasz 447255570Strasz return (result); 448255570Strasz} 449255570Strasz 450255570Straszstatic void 451255570Straszcfiscsi_pdu_handle_nop_out(struct icl_pdu *request) 452255570Strasz{ 453255570Strasz struct cfiscsi_session *cs; 454255570Strasz struct iscsi_bhs_nop_out *bhsno; 455255570Strasz struct iscsi_bhs_nop_in *bhsni; 456255570Strasz struct icl_pdu *response; 457255570Strasz 458255570Strasz cs = PDU_SESSION(request); 459255570Strasz bhsno = (struct iscsi_bhs_nop_out *)request->ip_bhs; 460255570Strasz 461255570Strasz if (bhsno->bhsno_initiator_task_tag == 0xffffffff) { 462255570Strasz /* 463255570Strasz * Nothing to do, iscsi_pdu_update_statsn() already 464255570Strasz * zeroed the timeout. 465255570Strasz */ 466255570Strasz icl_pdu_free(request); 467255570Strasz return; 468255570Strasz } 469255570Strasz 470255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 471255570Strasz if (response == NULL) { 472255570Strasz icl_pdu_free(request); 473255570Strasz return; 474255570Strasz } 475255570Strasz bhsni = (struct iscsi_bhs_nop_in *)response->ip_bhs; 476255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 477255570Strasz bhsni->bhsni_flags = 0x80; 478255570Strasz bhsni->bhsni_initiator_task_tag = bhsno->bhsno_initiator_task_tag; 479255570Strasz bhsni->bhsni_target_transfer_tag = 0xffffffff; 480255570Strasz 481255570Strasz#if 0 482255570Strasz /* XXX */ 483255570Strasz response->ip_data_len = request->ip_data_len; 484255570Strasz response->ip_data_mbuf = request->ip_data_mbuf; 485255570Strasz request->ip_data_len = 0; 486255570Strasz request->ip_data_mbuf = NULL; 487255570Strasz#endif 488255570Strasz 489255570Strasz icl_pdu_free(request); 490255570Strasz cfiscsi_pdu_queue(response); 491255570Strasz} 492255570Strasz 493255570Straszstatic void 494255570Straszcfiscsi_pdu_handle_scsi_command(struct icl_pdu *request) 495255570Strasz{ 496255570Strasz struct iscsi_bhs_scsi_command *bhssc; 497255570Strasz struct cfiscsi_session *cs; 498255570Strasz union ctl_io *io; 499255570Strasz int error; 500255570Strasz 501255570Strasz cs = PDU_SESSION(request); 502255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 503255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 504255570Strasz // bhssc->bhssc_initiator_task_tag); 505255570Strasz 506255570Strasz if (request->ip_data_len > 0 && cs->cs_immediate_data == false) { 507255570Strasz CFISCSI_SESSION_WARN(cs, "unsolicited data with " 508255570Strasz "ImmediateData=No; dropping connection"); 509255570Strasz cfiscsi_session_terminate(cs); 510255570Strasz icl_pdu_free(request); 511255570Strasz return; 512255570Strasz } 513255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 514255570Strasz if (io == NULL) { 515255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 516255570Strasz icl_pdu_free(request); 517255570Strasz return; 518255570Strasz } 519255570Strasz ctl_zero_io(io); 520255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 521255570Strasz io->io_hdr.io_type = CTL_IO_SCSI; 522255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 523255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_softc->fe.targ_port; 524255570Strasz io->io_hdr.nexus.targ_target.id = 0; 525255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhssc->bhssc_lun); 526255570Strasz io->io_hdr.nexus.lun_map_fn = cfiscsi_map_lun; 527255570Strasz io->io_hdr.nexus.lun_map_arg = cs; 528255570Strasz io->scsiio.tag_num = bhssc->bhssc_initiator_task_tag; 529255570Strasz switch ((bhssc->bhssc_flags & BHSSC_FLAGS_ATTR)) { 530255570Strasz case BHSSC_FLAGS_ATTR_UNTAGGED: 531255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 532255570Strasz break; 533255570Strasz case BHSSC_FLAGS_ATTR_SIMPLE: 534255570Strasz io->scsiio.tag_type = CTL_TAG_SIMPLE; 535255570Strasz break; 536255570Strasz case BHSSC_FLAGS_ATTR_ORDERED: 537255570Strasz io->scsiio.tag_type = CTL_TAG_ORDERED; 538255570Strasz break; 539255570Strasz case BHSSC_FLAGS_ATTR_HOQ: 540255570Strasz io->scsiio.tag_type = CTL_TAG_HEAD_OF_QUEUE; 541255570Strasz break; 542255570Strasz case BHSSC_FLAGS_ATTR_ACA: 543255570Strasz io->scsiio.tag_type = CTL_TAG_ACA; 544255570Strasz break; 545255570Strasz default: 546255570Strasz io->scsiio.tag_type = CTL_TAG_UNTAGGED; 547255570Strasz CFISCSI_SESSION_WARN(cs, "unhandled tag type %d", 548255570Strasz bhssc->bhssc_flags & BHSSC_FLAGS_ATTR); 549255570Strasz break; 550255570Strasz } 551255570Strasz io->scsiio.cdb_len = sizeof(bhssc->bhssc_cdb); /* Which is 16. */ 552255570Strasz memcpy(io->scsiio.cdb, bhssc->bhssc_cdb, sizeof(bhssc->bhssc_cdb)); 553255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 554255570Strasz error = ctl_queue(io); 555255570Strasz if (error != CTL_RETVAL_COMPLETE) { 556255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 557255570Strasz ctl_free_io(io); 558255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 559255570Strasz icl_pdu_free(request); 560255570Strasz } 561255570Strasz} 562255570Strasz 563255570Straszstatic void 564255570Straszcfiscsi_pdu_handle_task_request(struct icl_pdu *request) 565255570Strasz{ 566255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 567255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 568255570Strasz struct icl_pdu *response; 569255570Strasz struct cfiscsi_session *cs; 570255570Strasz union ctl_io *io; 571255570Strasz int error; 572255570Strasz 573255570Strasz cs = PDU_SESSION(request); 574255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 575255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 576255570Strasz if (io == NULL) { 577255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 578255570Strasz icl_pdu_free(request); 579255570Strasz return; 580255570Strasz } 581255570Strasz ctl_zero_io(io); 582255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = request; 583255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 584255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 585255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_softc->fe.targ_port; 586255570Strasz io->io_hdr.nexus.targ_target.id = 0; 587255570Strasz io->io_hdr.nexus.targ_lun = cfiscsi_decode_lun(bhstmr->bhstmr_lun); 588255570Strasz io->io_hdr.nexus.lun_map_fn = cfiscsi_map_lun; 589255570Strasz io->io_hdr.nexus.lun_map_arg = cs; 590255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 591255570Strasz 592255570Strasz switch (bhstmr->bhstmr_function & ~0x80) { 593255570Strasz case BHSTMR_FUNCTION_ABORT_TASK: 594255570Strasz#if 0 595255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_ABORT_TASK"); 596255570Strasz#endif 597255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 598255570Strasz io->taskio.tag_num = bhstmr->bhstmr_referenced_task_tag; 599255570Strasz break; 600255570Strasz case BHSTMR_FUNCTION_LOGICAL_UNIT_RESET: 601255570Strasz#if 0 602255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_LOGICAL_UNIT_RESET"); 603255570Strasz#endif 604255570Strasz io->taskio.task_action = CTL_TASK_LUN_RESET; 605255570Strasz break; 606255570Strasz case BHSTMR_FUNCTION_TARGET_COLD_RESET: 607255570Strasz#if 0 608255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_FUNCTION_TARGET_COLD_RESET"); 609255570Strasz#endif 610255570Strasz io->taskio.task_action = CTL_TASK_BUS_RESET; 611255570Strasz break; 612255570Strasz default: 613255570Strasz CFISCSI_SESSION_DEBUG(cs, "unsupported function 0x%x", 614255570Strasz bhstmr->bhstmr_function & ~0x80); 615255570Strasz ctl_free_io(io); 616255570Strasz 617255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 618255570Strasz if (response == NULL) { 619255570Strasz icl_pdu_free(request); 620255570Strasz return; 621255570Strasz } 622255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 623255570Strasz response->ip_bhs; 624255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 625255570Strasz bhstmr2->bhstmr_flags = 0x80; 626255570Strasz bhstmr2->bhstmr_response = 627255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 628255570Strasz bhstmr2->bhstmr_initiator_task_tag = 629255570Strasz bhstmr->bhstmr_initiator_task_tag; 630255570Strasz icl_pdu_free(request); 631255570Strasz cfiscsi_pdu_queue(response); 632255570Strasz return; 633255570Strasz } 634255570Strasz 635255570Strasz refcount_acquire(&cs->cs_outstanding_ctl_pdus); 636255570Strasz error = ctl_queue(io); 637255570Strasz if (error != CTL_RETVAL_COMPLETE) { 638255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 639255570Strasz ctl_free_io(io); 640255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 641255570Strasz icl_pdu_free(request); 642255570Strasz } 643255570Strasz} 644255570Strasz 645255570Straszstatic bool 646255570Straszcfiscsi_handle_data_segment(struct icl_pdu *request, struct cfiscsi_data_wait *cdw) 647255570Strasz{ 648255570Strasz struct iscsi_bhs_data_out *bhsdo; 649255570Strasz struct cfiscsi_session *cs; 650255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 651255570Strasz size_t copy_len, off, buffer_offset; 652255570Strasz int ctl_sg_count; 653255570Strasz union ctl_io *io; 654255570Strasz 655255570Strasz cs = PDU_SESSION(request); 656255570Strasz 657255570Strasz KASSERT((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 658255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT || 659255570Strasz (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 660255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 661255570Strasz ("bad opcode 0x%x", request->ip_bhs->bhs_opcode)); 662255570Strasz 663255570Strasz /* 664255570Strasz * We're only using fields common for Data Out and SCSI Command PDUs. 665255570Strasz */ 666255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 667255570Strasz 668255570Strasz io = cdw->cdw_ctl_io; 669255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 670255570Strasz ("CTL_FLAG_DATA_IN")); 671255570Strasz 672255570Strasz#if 0 673255570Strasz CFISCSI_SESSION_DEBUG(cs, "received %zd bytes out of %d", 674255570Strasz request->ip_data_len, io->scsiio.kern_total_len); 675255570Strasz#endif 676255570Strasz 677255570Strasz if (io->scsiio.kern_sg_entries > 0) { 678255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 679255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 680255570Strasz } else { 681255570Strasz ctl_sglist = &ctl_sg_entry; 682255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 683255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 684255570Strasz ctl_sg_count = 1; 685255570Strasz } 686255570Strasz#if 0 687255570Strasz if (ctl_sg_count > 1) 688255570Strasz CFISCSI_SESSION_DEBUG(cs, "ctl_sg_count = %d", ctl_sg_count); 689255570Strasz#endif 690255570Strasz 691255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 692255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) 693255570Strasz buffer_offset = ntohl(bhsdo->bhsdo_buffer_offset); 694255570Strasz else 695255570Strasz buffer_offset = 0; 696255570Strasz 697255570Strasz /* 698255570Strasz * Make sure the offset, as sent by the initiator, matches the offset 699255570Strasz * we're supposed to be at in the scatter-gather list. 700255570Strasz */ 701255570Strasz if (buffer_offset != io->scsiio.ext_data_filled) { 702255570Strasz CFISCSI_SESSION_WARN(cs, "received bad buffer offset %zd, " 703255570Strasz "expected %zd", buffer_offset, 704255570Strasz (size_t)io->scsiio.ext_data_filled); 705255570Strasz cfiscsi_session_terminate(cs); 706255570Strasz return (true); 707255570Strasz } 708255570Strasz 709255570Strasz off = 0; 710255570Strasz for (;;) { 711255570Strasz KASSERT(cdw->cdw_sg_index < ctl_sg_count, 712255570Strasz ("cdw->cdw_sg_index >= ctl_sg_count")); 713255570Strasz if (cdw->cdw_sg_len == 0) { 714255570Strasz cdw->cdw_sg_addr = ctl_sglist[cdw->cdw_sg_index].addr; 715255570Strasz cdw->cdw_sg_len = ctl_sglist[cdw->cdw_sg_index].len; 716255570Strasz } 717255570Strasz copy_len = icl_pdu_data_segment_length(request) - off; 718255570Strasz if (copy_len > cdw->cdw_sg_len) 719255570Strasz copy_len = cdw->cdw_sg_len; 720255570Strasz 721255570Strasz icl_pdu_get_data(request, off, cdw->cdw_sg_addr, copy_len); 722255570Strasz cdw->cdw_sg_addr += copy_len; 723255570Strasz cdw->cdw_sg_len -= copy_len; 724255570Strasz off += copy_len; 725255570Strasz io->scsiio.ext_data_filled += copy_len; 726255570Strasz 727255570Strasz if (cdw->cdw_sg_len == 0) { 728255570Strasz if (cdw->cdw_sg_index == ctl_sg_count - 1) 729255570Strasz break; 730255570Strasz cdw->cdw_sg_index++; 731255570Strasz } 732255570Strasz if (off == icl_pdu_data_segment_length(request)) 733255570Strasz break; 734255570Strasz } 735255570Strasz 736255570Strasz if (off < icl_pdu_data_segment_length(request)) { 737255570Strasz CFISCSI_SESSION_WARN(cs, "received too much data: got %zd bytes, " 738255570Strasz "expected %zd", icl_pdu_data_segment_length(request), off); 739255570Strasz cfiscsi_session_terminate(cs); 740255570Strasz return (true); 741255570Strasz } 742255570Strasz 743255570Strasz if (bhsdo->bhsdo_flags & BHSDO_FLAGS_F || 744255570Strasz io->scsiio.ext_data_filled == io->scsiio.kern_total_len) { 745255570Strasz if ((bhsdo->bhsdo_flags & BHSDO_FLAGS_F) == 0) { 746255570Strasz CFISCSI_SESSION_WARN(cs, "got the final packet without " 747255570Strasz "the F flag; flags = 0x%x; dropping connection", 748255570Strasz bhsdo->bhsdo_flags); 749255570Strasz cfiscsi_session_terminate(cs); 750255570Strasz return (true); 751255570Strasz } 752255570Strasz 753255570Strasz if (io->scsiio.ext_data_filled != io->scsiio.kern_total_len) { 754255570Strasz if ((request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 755255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_OUT) { 756255570Strasz CFISCSI_SESSION_WARN(cs, "got the final packet, but the " 757255570Strasz "transmitted size was %zd bytes instead of %d; " 758255570Strasz "dropping connection", 759255570Strasz (size_t)io->scsiio.ext_data_filled, 760255570Strasz io->scsiio.kern_total_len); 761255570Strasz cfiscsi_session_terminate(cs); 762255570Strasz return (true); 763255570Strasz } else { 764255570Strasz /* 765255570Strasz * For SCSI Command PDU, this just means we need to 766255570Strasz * solicit more data by sending R2T. 767255570Strasz */ 768255570Strasz return (false); 769255570Strasz } 770255570Strasz } 771255570Strasz#if 0 772255570Strasz CFISCSI_SESSION_DEBUG(cs, "no longer expecting Data-Out with target " 773255570Strasz "transfer tag 0x%x", cdw->cdw_target_transfer_tag); 774255570Strasz#endif 775255570Strasz 776255570Strasz return (true); 777255570Strasz } 778255570Strasz 779255570Strasz return (false); 780255570Strasz} 781255570Strasz 782255570Straszstatic void 783255570Straszcfiscsi_pdu_handle_data_out(struct icl_pdu *request) 784255570Strasz{ 785255570Strasz struct iscsi_bhs_data_out *bhsdo; 786255570Strasz struct cfiscsi_session *cs; 787255570Strasz struct cfiscsi_data_wait *cdw = NULL; 788255570Strasz union ctl_io *io; 789255570Strasz bool done; 790255570Strasz 791255570Strasz cs = PDU_SESSION(request); 792255570Strasz bhsdo = (struct iscsi_bhs_data_out *)request->ip_bhs; 793255570Strasz 794255570Strasz CFISCSI_SESSION_LOCK(cs); 795255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) { 796255570Strasz#if 0 797255570Strasz CFISCSI_SESSION_DEBUG(cs, "have ttt 0x%x, itt 0x%x; looking for " 798255570Strasz "ttt 0x%x, itt 0x%x", 799255570Strasz bhsdo->bhsdo_target_transfer_tag, 800255570Strasz bhsdo->bhsdo_initiator_task_tag, 801255570Strasz cdw->cdw_target_transfer_tag, cdw->cdw_initiator_task_tag)); 802255570Strasz#endif 803255570Strasz if (bhsdo->bhsdo_target_transfer_tag == 804255570Strasz cdw->cdw_target_transfer_tag) 805255570Strasz break; 806255570Strasz } 807255570Strasz CFISCSI_SESSION_UNLOCK(cs); 808255570Strasz if (cdw == NULL) { 809255570Strasz CFISCSI_SESSION_WARN(cs, "data transfer tag 0x%x, initiator task tag " 810255570Strasz "0x%x, not found", bhsdo->bhsdo_target_transfer_tag, 811255570Strasz bhsdo->bhsdo_initiator_task_tag); 812255570Strasz icl_pdu_free(request); 813255570Strasz cfiscsi_session_terminate(cs); 814255570Strasz return; 815255570Strasz } 816255570Strasz 817255570Strasz io = cdw->cdw_ctl_io; 818255570Strasz KASSERT((io->io_hdr.flags & CTL_FLAG_DATA_MASK) != CTL_FLAG_DATA_IN, 819255570Strasz ("CTL_FLAG_DATA_IN")); 820255570Strasz 821255570Strasz done = cfiscsi_handle_data_segment(request, cdw); 822255570Strasz if (done) { 823255570Strasz CFISCSI_SESSION_LOCK(cs); 824255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 825255570Strasz CFISCSI_SESSION_UNLOCK(cs); 826255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 827255570Strasz io->scsiio.be_move_done(io); 828255570Strasz } 829255570Strasz 830255570Strasz icl_pdu_free(request); 831255570Strasz} 832255570Strasz 833255570Straszstatic void 834255570Straszcfiscsi_pdu_handle_logout_request(struct icl_pdu *request) 835255570Strasz{ 836255570Strasz struct iscsi_bhs_logout_request *bhslr; 837255570Strasz struct iscsi_bhs_logout_response *bhslr2; 838255570Strasz struct icl_pdu *response; 839255570Strasz struct cfiscsi_session *cs; 840255570Strasz 841255570Strasz cs = PDU_SESSION(request); 842255570Strasz bhslr = (struct iscsi_bhs_logout_request *)request->ip_bhs; 843255570Strasz switch (bhslr->bhslr_reason & 0x7f) { 844255570Strasz case BHSLR_REASON_CLOSE_SESSION: 845255570Strasz case BHSLR_REASON_CLOSE_CONNECTION: 846255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 847255570Strasz if (response == NULL) { 848255570Strasz icl_pdu_free(request); 849255570Strasz cfiscsi_session_terminate(cs); 850255570Strasz return; 851255570Strasz } 852255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 853255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 854255570Strasz bhslr2->bhslr_flags = 0x80; 855255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_CLOSED_SUCCESSFULLY; 856255570Strasz bhslr2->bhslr_initiator_task_tag = 857255570Strasz bhslr->bhslr_initiator_task_tag; 858255570Strasz icl_pdu_free(request); 859255570Strasz cfiscsi_pdu_queue(response); 860255570Strasz cfiscsi_session_terminate(cs); 861255570Strasz break; 862255570Strasz case BHSLR_REASON_REMOVE_FOR_RECOVERY: 863255570Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 864255570Strasz if (response == NULL) { 865255570Strasz icl_pdu_free(request); 866255570Strasz cfiscsi_session_terminate(cs); 867255570Strasz return; 868255570Strasz } 869255570Strasz bhslr2 = (struct iscsi_bhs_logout_response *)response->ip_bhs; 870255570Strasz bhslr2->bhslr_opcode = ISCSI_BHS_OPCODE_LOGOUT_RESPONSE; 871255570Strasz bhslr2->bhslr_flags = 0x80; 872255570Strasz bhslr2->bhslr_response = BHSLR_RESPONSE_RECOVERY_NOT_SUPPORTED; 873255570Strasz bhslr2->bhslr_initiator_task_tag = 874255570Strasz bhslr->bhslr_initiator_task_tag; 875255570Strasz icl_pdu_free(request); 876255570Strasz cfiscsi_pdu_queue(response); 877255570Strasz break; 878255570Strasz default: 879255570Strasz CFISCSI_SESSION_WARN(cs, "invalid reason 0%x; dropping connection", 880255570Strasz bhslr->bhslr_reason); 881255570Strasz icl_pdu_free(request); 882255570Strasz cfiscsi_session_terminate(cs); 883255570Strasz break; 884255570Strasz } 885255570Strasz} 886255570Strasz 887255570Straszstatic void 888255570Straszcfiscsi_callout(void *context) 889255570Strasz{ 890255570Strasz struct icl_pdu *cp; 891255570Strasz struct iscsi_bhs_nop_in *bhsni; 892255570Strasz struct cfiscsi_session *cs; 893255570Strasz 894255570Strasz cs = context; 895255570Strasz 896255570Strasz if (cs->cs_terminating) 897255570Strasz return; 898255570Strasz 899255570Strasz callout_schedule(&cs->cs_callout, 1 * hz); 900255570Strasz 901255570Strasz CFISCSI_SESSION_LOCK(cs); 902255570Strasz cs->cs_timeout++; 903255570Strasz CFISCSI_SESSION_UNLOCK(cs); 904255570Strasz 905255570Strasz#ifdef ICL_KERNEL_PROXY 906255570Strasz if (cs->cs_waiting_for_ctld || cs->cs_login_phase) { 907255570Strasz if (cs->cs_timeout > login_timeout) { 908255570Strasz CFISCSI_SESSION_WARN(cs, "login timed out after " 909255570Strasz "%d seconds; dropping connection", cs->cs_timeout); 910255570Strasz cfiscsi_session_terminate(cs); 911255570Strasz } 912255570Strasz return; 913255570Strasz } 914255570Strasz#endif 915255570Strasz 916255570Strasz if (cs->cs_timeout >= ping_timeout) { 917255570Strasz CFISCSI_SESSION_WARN(cs, "no ping reply (NOP-Out) after %d seconds; " 918255570Strasz "dropping connection", ping_timeout); 919255570Strasz cfiscsi_session_terminate(cs); 920255570Strasz return; 921255570Strasz } 922255570Strasz 923255570Strasz /* 924255570Strasz * If the ping was reset less than one second ago - which means 925255570Strasz * that we've received some PDU during the last second - assume 926255570Strasz * the traffic flows correctly and don't bother sending a NOP-Out. 927255570Strasz * 928255570Strasz * (It's 2 - one for one second, and one for incrementing is_timeout 929255570Strasz * earlier in this routine.) 930255570Strasz */ 931255570Strasz if (cs->cs_timeout < 2) 932255570Strasz return; 933255570Strasz 934255824Strasz cp = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 935255824Strasz if (cp == NULL) { 936255824Strasz CFISCSI_SESSION_WARN(cs, "failed to allocate PDU"); 937255824Strasz return; 938255824Strasz } 939255570Strasz bhsni = (struct iscsi_bhs_nop_in *)cp->ip_bhs; 940255570Strasz bhsni->bhsni_opcode = ISCSI_BHS_OPCODE_NOP_IN; 941255570Strasz bhsni->bhsni_flags = 0x80; 942255570Strasz bhsni->bhsni_initiator_task_tag = 0xffffffff; 943255570Strasz 944255570Strasz cfiscsi_pdu_queue(cp); 945255570Strasz} 946255570Strasz 947255570Straszstatic void 948255570Straszcfiscsi_session_terminate_tasks(struct cfiscsi_session *cs) 949255570Strasz{ 950255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 951255570Strasz union ctl_io *io; 952255570Strasz int error; 953255570Strasz 954255570Strasz#ifdef notyet 955255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 956255570Strasz if (io == NULL) { 957255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 958255570Strasz return; 959255570Strasz } 960255570Strasz ctl_zero_io(io); 961255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 962255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 963255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 964255570Strasz io->io_hdr.nexus.targ_port = cs->cs_target->ct_softc->fe.targ_port; 965255570Strasz io->io_hdr.nexus.targ_target.id = 0; 966255570Strasz io->io_hdr.nexus.targ_lun = lun; 967255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 968255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK_SET; 969255570Strasz error = ctl_queue(io); 970255570Strasz if (error != CTL_RETVAL_COMPLETE) { 971255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 972255570Strasz ctl_free_io(io); 973255570Strasz } 974255570Strasz#else 975255570Strasz /* 976255570Strasz * CTL doesn't currently support CTL_TASK_ABORT_TASK_SET, so instead 977255570Strasz * just iterate over tasks that are waiting for something - data - and 978255570Strasz * terminate those. 979255570Strasz */ 980255570Strasz CFISCSI_SESSION_LOCK(cs); 981255570Strasz TAILQ_FOREACH_SAFE(cdw, 982255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 983255570Strasz io = ctl_alloc_io(cs->cs_target->ct_softc->fe.ctl_pool_ref); 984255570Strasz if (io == NULL) { 985255570Strasz CFISCSI_SESSION_WARN(cs, "can't allocate ctl_io"); 986255570Strasz return; 987255570Strasz } 988255570Strasz ctl_zero_io(io); 989255570Strasz io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = NULL; 990255570Strasz io->io_hdr.io_type = CTL_IO_TASK; 991255570Strasz io->io_hdr.nexus.initid.id = cs->cs_ctl_initid; 992255570Strasz io->io_hdr.nexus.targ_port = 993255570Strasz cs->cs_target->ct_softc->fe.targ_port; 994255570Strasz io->io_hdr.nexus.targ_target.id = 0; 995255570Strasz //io->io_hdr.nexus.targ_lun = lun; /* Not needed? */ 996255570Strasz io->taskio.tag_type = CTL_TAG_SIMPLE; /* XXX */ 997255570Strasz io->taskio.task_action = CTL_TASK_ABORT_TASK; 998255570Strasz io->taskio.tag_num = cdw->cdw_initiator_task_tag; 999255570Strasz error = ctl_queue(io); 1000255570Strasz if (error != CTL_RETVAL_COMPLETE) { 1001255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_queue() failed; error %d", error); 1002255570Strasz ctl_free_io(io); 1003255570Strasz return; 1004255570Strasz } 1005255570Strasz#if 0 1006255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task tag " 1007255570Strasz "0x%x", cdw->cdw_initiator_task_tag); 1008255570Strasz#endif 1009255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 1010255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, cdw, cdw_next); 1011255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 1012255570Strasz } 1013255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1014255570Strasz#endif 1015255570Strasz} 1016255570Strasz 1017255570Straszstatic void 1018255570Straszcfiscsi_maintenance_thread(void *arg) 1019255570Strasz{ 1020255570Strasz struct cfiscsi_session *cs; 1021255570Strasz 1022255570Strasz cs = arg; 1023255570Strasz 1024255570Strasz for (;;) { 1025255570Strasz CFISCSI_SESSION_LOCK(cs); 1026255570Strasz if (cs->cs_terminating == false) 1027255570Strasz cv_wait(&cs->cs_maintenance_cv, &cs->cs_lock); 1028255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1029255570Strasz 1030255570Strasz if (cs->cs_terminating) { 1031255570Strasz cfiscsi_session_terminate_tasks(cs); 1032255570Strasz callout_drain(&cs->cs_callout); 1033255570Strasz 1034255570Strasz icl_conn_shutdown(cs->cs_conn); 1035255570Strasz icl_conn_close(cs->cs_conn); 1036255570Strasz 1037255570Strasz cs->cs_terminating++; 1038255570Strasz 1039255570Strasz /* 1040255570Strasz * XXX: We used to wait up to 30 seconds to deliver queued PDUs 1041255570Strasz * to the initiator. We also tried hard to deliver SCSI Responses 1042255570Strasz * for the aborted PDUs. We don't do that anymore. We might need 1043255570Strasz * to revisit that. 1044255570Strasz */ 1045255570Strasz 1046255570Strasz cfiscsi_session_delete(cs); 1047255570Strasz kthread_exit(); 1048255570Strasz return; 1049255570Strasz } 1050255570Strasz CFISCSI_SESSION_DEBUG(cs, "nothing to do"); 1051255570Strasz } 1052255570Strasz} 1053255570Strasz 1054255570Straszstatic void 1055255570Straszcfiscsi_session_terminate(struct cfiscsi_session *cs) 1056255570Strasz{ 1057255570Strasz 1058255570Strasz if (cs->cs_terminating != 0) 1059255570Strasz return; 1060255570Strasz cs->cs_terminating = 1; 1061255570Strasz cv_signal(&cs->cs_maintenance_cv); 1062255570Strasz} 1063255570Strasz 1064255570Straszstatic int 1065255570Straszcfiscsi_session_register_initiator(struct cfiscsi_session *cs) 1066255570Strasz{ 1067255570Strasz int error, i; 1068255570Strasz struct cfiscsi_softc *softc; 1069255570Strasz 1070255570Strasz KASSERT(cs->cs_ctl_initid == -1, ("already registered")); 1071255570Strasz 1072255570Strasz softc = &cfiscsi_softc; 1073255570Strasz 1074255570Strasz mtx_lock(&softc->lock); 1075255570Strasz for (i = 0; i < softc->max_initiators; i++) { 1076255570Strasz if (softc->ctl_initids[i] == 0) 1077255570Strasz break; 1078255570Strasz } 1079255570Strasz if (i == softc->max_initiators) { 1080255570Strasz CFISCSI_SESSION_WARN(cs, "too many concurrent sessions (%d)", 1081255570Strasz softc->max_initiators); 1082255570Strasz mtx_unlock(&softc->lock); 1083255570Strasz return (1); 1084255570Strasz } 1085255570Strasz softc->ctl_initids[i] = 1; 1086255570Strasz mtx_unlock(&softc->lock); 1087255570Strasz 1088255570Strasz#if 0 1089255570Strasz CFISCSI_SESSION_DEBUG(cs, "adding initiator id %d, max %d", 1090255570Strasz i, softc->max_initiators); 1091255570Strasz#endif 1092255570Strasz cs->cs_ctl_initid = i; 1093255570Strasz error = ctl_add_initiator(0x0, softc->fe.targ_port, cs->cs_ctl_initid); 1094255570Strasz if (error != 0) { 1095255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_add_initiator failed with error %d", error); 1096255570Strasz mtx_lock(&softc->lock); 1097255570Strasz softc->ctl_initids[cs->cs_ctl_initid] = 0; 1098255570Strasz mtx_unlock(&softc->lock); 1099255570Strasz cs->cs_ctl_initid = -1; 1100255570Strasz return (1); 1101255570Strasz } 1102255570Strasz 1103255570Strasz return (0); 1104255570Strasz} 1105255570Strasz 1106255570Straszstatic void 1107255570Straszcfiscsi_session_unregister_initiator(struct cfiscsi_session *cs) 1108255570Strasz{ 1109255570Strasz int error; 1110255570Strasz struct cfiscsi_softc *softc; 1111255570Strasz 1112255570Strasz if (cs->cs_ctl_initid == -1) 1113255570Strasz return; 1114255570Strasz 1115255570Strasz softc = &cfiscsi_softc; 1116255570Strasz 1117255570Strasz error = ctl_remove_initiator(softc->fe.targ_port, cs->cs_ctl_initid); 1118255570Strasz if (error != 0) { 1119255570Strasz CFISCSI_SESSION_WARN(cs, "ctl_remove_initiator failed with error %d", 1120255570Strasz error); 1121255570Strasz } 1122255570Strasz mtx_lock(&softc->lock); 1123255570Strasz softc->ctl_initids[cs->cs_ctl_initid] = 0; 1124255570Strasz mtx_unlock(&softc->lock); 1125255570Strasz cs->cs_ctl_initid = -1; 1126255570Strasz} 1127255570Strasz 1128255570Straszstatic struct cfiscsi_session * 1129255570Straszcfiscsi_session_new(struct cfiscsi_softc *softc) 1130255570Strasz{ 1131255570Strasz struct cfiscsi_session *cs; 1132255570Strasz int error; 1133255570Strasz 1134255570Strasz cs = malloc(sizeof(*cs), M_CFISCSI, M_NOWAIT | M_ZERO); 1135255570Strasz if (cs == NULL) { 1136255570Strasz CFISCSI_WARN("malloc failed"); 1137255570Strasz return (NULL); 1138255570Strasz } 1139255570Strasz cs->cs_ctl_initid = -1; 1140255570Strasz 1141255570Strasz refcount_init(&cs->cs_outstanding_ctl_pdus, 0); 1142255570Strasz TAILQ_INIT(&cs->cs_waiting_for_data_out); 1143255570Strasz mtx_init(&cs->cs_lock, "cfiscsi_lock", NULL, MTX_DEF); 1144255570Strasz cv_init(&cs->cs_maintenance_cv, "cfiscsi_mt"); 1145255570Strasz#ifdef ICL_KERNEL_PROXY 1146255570Strasz cv_init(&cs->cs_login_cv, "cfiscsi_login"); 1147255570Strasz#endif 1148255570Strasz 1149255570Strasz cs->cs_conn = icl_conn_new(); 1150255570Strasz cs->cs_conn->ic_receive = cfiscsi_receive_callback; 1151255570Strasz cs->cs_conn->ic_error = cfiscsi_error_callback; 1152255570Strasz cs->cs_conn->ic_prv0 = cs; 1153255570Strasz 1154255570Strasz error = kthread_add(cfiscsi_maintenance_thread, cs, NULL, NULL, 0, 0, "cfiscsimt"); 1155255570Strasz if (error != 0) { 1156255570Strasz CFISCSI_SESSION_WARN(cs, "kthread_add(9) failed with error %d", error); 1157255570Strasz free(cs, M_CFISCSI); 1158255570Strasz return (NULL); 1159255570Strasz } 1160255570Strasz 1161255570Strasz mtx_lock(&softc->lock); 1162255570Strasz cs->cs_id = softc->last_session_id + 1; 1163255570Strasz softc->last_session_id++; 1164255570Strasz mtx_unlock(&softc->lock); 1165255570Strasz 1166255570Strasz mtx_lock(&softc->lock); 1167255570Strasz TAILQ_INSERT_TAIL(&softc->sessions, cs, cs_next); 1168255570Strasz mtx_unlock(&softc->lock); 1169255570Strasz 1170255570Strasz /* 1171255570Strasz * Start pinging the initiator. 1172255570Strasz */ 1173255570Strasz callout_init(&cs->cs_callout, 1); 1174255570Strasz callout_reset(&cs->cs_callout, 1 * hz, cfiscsi_callout, cs); 1175255570Strasz 1176255570Strasz return (cs); 1177255570Strasz} 1178255570Strasz 1179255570Straszstatic void 1180255570Straszcfiscsi_session_delete(struct cfiscsi_session *cs) 1181255570Strasz{ 1182255570Strasz struct cfiscsi_softc *softc; 1183255570Strasz 1184255570Strasz softc = &cfiscsi_softc; 1185255570Strasz 1186255570Strasz KASSERT(cs->cs_outstanding_ctl_pdus == 0, 1187255570Strasz ("destroying session with outstanding CTL pdus")); 1188255570Strasz KASSERT(TAILQ_EMPTY(&cs->cs_waiting_for_data_out), 1189255570Strasz ("destroying session with non-empty queue")); 1190255570Strasz 1191255570Strasz cfiscsi_session_unregister_initiator(cs); 1192255570Strasz if (cs->cs_target != NULL) 1193255570Strasz cfiscsi_target_release(cs->cs_target); 1194255570Strasz icl_conn_close(cs->cs_conn); 1195255570Strasz icl_conn_free(cs->cs_conn); 1196255570Strasz 1197255570Strasz mtx_lock(&softc->lock); 1198255570Strasz TAILQ_REMOVE(&softc->sessions, cs, cs_next); 1199255570Strasz mtx_unlock(&softc->lock); 1200255570Strasz 1201255570Strasz free(cs, M_CFISCSI); 1202255570Strasz} 1203255570Strasz 1204255570Straszint 1205255570Straszcfiscsi_init(void) 1206255570Strasz{ 1207255570Strasz struct cfiscsi_softc *softc; 1208255570Strasz struct ctl_frontend *fe; 1209255570Strasz int retval; 1210255570Strasz 1211255570Strasz softc = &cfiscsi_softc; 1212255570Strasz retval = 0; 1213255570Strasz bzero(softc, sizeof(*softc)); 1214255570Strasz mtx_init(&softc->lock, "cfiscsi", NULL, MTX_DEF); 1215255570Strasz 1216255570Strasz#ifdef ICL_KERNEL_PROXY 1217255570Strasz cv_init(&softc->accept_cv, "cfiscsi_accept"); 1218255570Strasz#endif 1219255570Strasz TAILQ_INIT(&softc->sessions); 1220255570Strasz TAILQ_INIT(&softc->targets); 1221255570Strasz 1222255570Strasz fe = &softc->fe; 1223255570Strasz fe->port_type = CTL_PORT_ISCSI; 1224255570Strasz /* XXX KDM what should the real number be here? */ 1225255570Strasz fe->num_requested_ctl_io = 4096; 1226255570Strasz snprintf(softc->port_name, sizeof(softc->port_name), "iscsi"); 1227255570Strasz fe->port_name = softc->port_name; 1228255570Strasz fe->port_online = cfiscsi_online; 1229255570Strasz fe->port_offline = cfiscsi_offline; 1230255570Strasz fe->onoff_arg = softc; 1231255570Strasz fe->targ_enable = cfiscsi_targ_enable; 1232255570Strasz fe->targ_disable = cfiscsi_targ_disable; 1233255570Strasz fe->lun_enable = cfiscsi_lun_enable; 1234255570Strasz fe->lun_disable = cfiscsi_lun_disable; 1235255570Strasz fe->targ_lun_arg = softc; 1236255570Strasz fe->ioctl = cfiscsi_ioctl; 1237255570Strasz fe->devid = cfiscsi_devid; 1238255570Strasz fe->fe_datamove = cfiscsi_datamove; 1239255570Strasz fe->fe_done = cfiscsi_done; 1240255570Strasz 1241255570Strasz /* XXX KDM what should we report here? */ 1242255570Strasz /* XXX These should probably be fetched from CTL. */ 1243255570Strasz fe->max_targets = 1; 1244255570Strasz fe->max_target_id = 15; 1245255570Strasz 1246255570Strasz retval = ctl_frontend_register(fe, /*master_SC*/ 1); 1247255570Strasz if (retval != 0) { 1248255570Strasz CFISCSI_WARN("ctl_frontend_register() failed with error %d", 1249255570Strasz retval); 1250255570Strasz retval = 1; 1251255570Strasz goto bailout; 1252255570Strasz } 1253255570Strasz 1254255570Strasz softc->max_initiators = fe->max_initiators; 1255255570Strasz 1256255570Strasz cfiscsi_data_wait_zone = uma_zcreate("cfiscsi_data_wait", 1257255570Strasz sizeof(struct cfiscsi_data_wait), NULL, NULL, NULL, NULL, 1258255570Strasz UMA_ALIGN_PTR, UMA_ZONE_NOFREE); 1259255570Strasz 1260255570Strasz return (0); 1261255570Strasz 1262255570Straszbailout: 1263255570Strasz return (retval); 1264255570Strasz} 1265255570Strasz 1266255570Straszstatic int 1267255570Straszcfiscsi_module_event_handler(module_t mod, int what, void *arg) 1268255570Strasz{ 1269255570Strasz 1270255570Strasz switch (what) { 1271255570Strasz case MOD_LOAD: 1272255570Strasz return (cfiscsi_init()); 1273255570Strasz case MOD_UNLOAD: 1274255570Strasz return (EBUSY); 1275255570Strasz default: 1276255570Strasz return (EOPNOTSUPP); 1277255570Strasz } 1278255570Strasz} 1279255570Strasz 1280255570Strasz#ifdef ICL_KERNEL_PROXY 1281255570Straszstatic void 1282255570Straszcfiscsi_accept(struct socket *so) 1283255570Strasz{ 1284255570Strasz struct cfiscsi_session *cs; 1285255570Strasz 1286255570Strasz cs = cfiscsi_session_new(&cfiscsi_softc); 1287255570Strasz if (cs == NULL) { 1288255570Strasz CFISCSI_WARN("failed to create session"); 1289255570Strasz return; 1290255570Strasz } 1291255570Strasz 1292255570Strasz icl_conn_handoff_sock(cs->cs_conn, so); 1293255570Strasz cs->cs_waiting_for_ctld = true; 1294255570Strasz cv_signal(&cfiscsi_softc.accept_cv); 1295255570Strasz} 1296255570Strasz#endif 1297255570Strasz 1298255570Straszstatic void 1299255570Straszcfiscsi_online(void *arg) 1300255570Strasz{ 1301255570Strasz struct cfiscsi_softc *softc; 1302255570Strasz 1303255570Strasz softc = (struct cfiscsi_softc *)arg; 1304255570Strasz 1305255570Strasz softc->online = 1; 1306255570Strasz#ifdef ICL_KERNEL_PROXY 1307255570Strasz if (softc->listener != NULL) 1308255570Strasz icl_listen_free(softc->listener); 1309255570Strasz softc->listener = icl_listen_new(cfiscsi_accept); 1310255570Strasz#endif 1311255570Strasz} 1312255570Strasz 1313255570Straszstatic void 1314255570Straszcfiscsi_offline(void *arg) 1315255570Strasz{ 1316255570Strasz struct cfiscsi_softc *softc; 1317255570Strasz struct cfiscsi_session *cs; 1318255570Strasz 1319255570Strasz softc = (struct cfiscsi_softc *)arg; 1320255570Strasz 1321255570Strasz softc->online = 0; 1322255570Strasz 1323255570Strasz mtx_lock(&softc->lock); 1324255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) 1325255570Strasz cfiscsi_session_terminate(cs); 1326255570Strasz mtx_unlock(&softc->lock); 1327255570Strasz 1328255570Strasz#ifdef ICL_KERNEL_PROXY 1329255570Strasz icl_listen_free(softc->listener); 1330255570Strasz softc->listener = NULL; 1331255570Strasz#endif 1332255570Strasz} 1333255570Strasz 1334255570Straszstatic int 1335255570Straszcfiscsi_targ_enable(void *arg, struct ctl_id targ_id) 1336255570Strasz{ 1337255570Strasz 1338255570Strasz return (0); 1339255570Strasz} 1340255570Strasz 1341255570Straszstatic int 1342255570Straszcfiscsi_targ_disable(void *arg, struct ctl_id targ_id) 1343255570Strasz{ 1344255570Strasz 1345255570Strasz return (0); 1346255570Strasz} 1347255570Strasz 1348255570Straszstatic void 1349255570Straszcfiscsi_ioctl_handoff(struct ctl_iscsi *ci) 1350255570Strasz{ 1351255570Strasz struct cfiscsi_softc *softc; 1352255570Strasz struct cfiscsi_session *cs; 1353255570Strasz struct cfiscsi_target *ct; 1354255570Strasz struct ctl_iscsi_handoff_params *cihp; 1355255570Strasz#ifndef ICL_KERNEL_PROXY 1356255570Strasz int error; 1357255570Strasz#endif 1358255570Strasz 1359255570Strasz cihp = (struct ctl_iscsi_handoff_params *)&(ci->data); 1360255570Strasz softc = &cfiscsi_softc; 1361255570Strasz 1362255570Strasz CFISCSI_DEBUG("new connection from %s (%s) to %s", 1363255570Strasz cihp->initiator_name, cihp->initiator_addr, 1364255570Strasz cihp->target_name); 1365255570Strasz 1366255570Strasz if (softc->online == 0) { 1367255570Strasz ci->status = CTL_ISCSI_ERROR; 1368255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1369255570Strasz "%s: port offline", __func__); 1370255570Strasz return; 1371255570Strasz } 1372255570Strasz 1373255570Strasz ct = cfiscsi_target_find(softc, cihp->target_name); 1374255570Strasz if (ct == NULL) { 1375255570Strasz ci->status = CTL_ISCSI_ERROR; 1376255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1377255570Strasz "%s: target not found", __func__); 1378255570Strasz return; 1379255570Strasz } 1380255570Strasz 1381255570Strasz#ifdef ICL_KERNEL_PROXY 1382255570Strasz mtx_lock(&cfiscsi_softc.lock); 1383255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1384255570Strasz if (cs->cs_id == cihp->socket) 1385255570Strasz break; 1386255570Strasz } 1387255570Strasz if (cs == NULL) { 1388255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1389255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1390255570Strasz ci->status = CTL_ISCSI_ERROR; 1391255570Strasz return; 1392255570Strasz } 1393255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1394255570Strasz#else 1395255570Strasz cs = cfiscsi_session_new(softc); 1396255570Strasz if (cs == NULL) { 1397255570Strasz ci->status = CTL_ISCSI_ERROR; 1398255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1399255570Strasz "%s: cfiscsi_session_new failed", __func__); 1400255570Strasz cfiscsi_target_release(ct); 1401255570Strasz return; 1402255570Strasz } 1403255570Strasz#endif 1404255570Strasz cs->cs_target = ct; 1405255570Strasz 1406255570Strasz /* 1407255570Strasz * First PDU of Full Feature phase has the same CmdSN as the last 1408255570Strasz * PDU from the Login Phase received from the initiator. Thus, 1409255570Strasz * the -1 below. 1410255570Strasz */ 1411255570Strasz cs->cs_portal_group_tag = cihp->portal_group_tag; 1412255570Strasz cs->cs_cmdsn = cihp->cmdsn; 1413255570Strasz cs->cs_statsn = cihp->statsn; 1414255570Strasz cs->cs_max_data_segment_length = cihp->max_recv_data_segment_length; 1415255570Strasz cs->cs_max_burst_length = cihp->max_burst_length; 1416255570Strasz cs->cs_immediate_data = !!cihp->immediate_data; 1417255570Strasz if (cihp->header_digest == CTL_ISCSI_DIGEST_CRC32C) 1418255570Strasz cs->cs_conn->ic_header_crc32c = true; 1419255570Strasz if (cihp->data_digest == CTL_ISCSI_DIGEST_CRC32C) 1420255570Strasz cs->cs_conn->ic_data_crc32c = true; 1421255570Strasz 1422255570Strasz strlcpy(cs->cs_initiator_name, 1423255570Strasz cihp->initiator_name, sizeof(cs->cs_initiator_name)); 1424255570Strasz strlcpy(cs->cs_initiator_addr, 1425255570Strasz cihp->initiator_addr, sizeof(cs->cs_initiator_addr)); 1426255570Strasz strlcpy(cs->cs_initiator_alias, 1427255570Strasz cihp->initiator_alias, sizeof(cs->cs_initiator_alias)); 1428255570Strasz 1429255570Strasz#ifdef ICL_KERNEL_PROXY 1430255570Strasz cs->cs_login_phase = false; 1431255570Strasz#else 1432255570Strasz error = icl_conn_handoff(cs->cs_conn, cihp->socket); 1433255570Strasz if (error != 0) { 1434255570Strasz cfiscsi_session_delete(cs); 1435255570Strasz ci->status = CTL_ISCSI_ERROR; 1436255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1437255570Strasz "%s: icl_conn_handoff failed with error %d", 1438255570Strasz __func__, error); 1439255570Strasz return; 1440255570Strasz } 1441255570Strasz#endif 1442255570Strasz 1443255570Strasz /* 1444255570Strasz * Register initiator with CTL. 1445255570Strasz */ 1446255570Strasz cfiscsi_session_register_initiator(cs); 1447255570Strasz 1448255570Strasz#ifdef ICL_KERNEL_PROXY 1449255570Strasz /* 1450255570Strasz * First PDU of the Full Feature phase has likely already arrived. 1451255570Strasz * We have to pick it up and execute properly. 1452255570Strasz */ 1453255570Strasz if (cs->cs_login_pdu != NULL) { 1454255570Strasz CFISCSI_SESSION_DEBUG(cs, "picking up first PDU"); 1455255570Strasz cfiscsi_pdu_handle(cs->cs_login_pdu); 1456255570Strasz cs->cs_login_pdu = NULL; 1457255570Strasz } 1458255570Strasz#endif 1459255570Strasz 1460255570Strasz ci->status = CTL_ISCSI_OK; 1461255570Strasz} 1462255570Strasz 1463255570Straszstatic void 1464255570Straszcfiscsi_ioctl_list(struct ctl_iscsi *ci) 1465255570Strasz{ 1466255570Strasz struct ctl_iscsi_list_params *cilp; 1467255570Strasz struct cfiscsi_session *cs; 1468255570Strasz struct cfiscsi_softc *softc; 1469255570Strasz struct sbuf *sb; 1470255570Strasz int error; 1471255570Strasz 1472255570Strasz cilp = (struct ctl_iscsi_list_params *)&(ci->data); 1473255570Strasz softc = &cfiscsi_softc; 1474255570Strasz 1475255570Strasz sb = sbuf_new(NULL, NULL, cilp->alloc_len, SBUF_FIXEDLEN); 1476255570Strasz if (sb == NULL) { 1477255570Strasz ci->status = CTL_ISCSI_ERROR; 1478255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1479255570Strasz "Unable to allocate %d bytes for iSCSI session list", 1480255570Strasz cilp->alloc_len); 1481255570Strasz return; 1482255570Strasz } 1483255570Strasz 1484255570Strasz sbuf_printf(sb, "<ctlislist>\n"); 1485255570Strasz mtx_lock(&softc->lock); 1486255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1487255570Strasz#ifdef ICL_KERNEL_PROXY 1488255570Strasz if (cs->cs_target == NULL) 1489255570Strasz continue; 1490255570Strasz#endif 1491255570Strasz error = sbuf_printf(sb, "<connection id=\"%d\">" 1492255570Strasz "<initiator>%s</initiator>" 1493255570Strasz "<initiator_addr>%s</initiator_addr>" 1494255570Strasz "<initiator_alias>%s</initiator_alias>" 1495255570Strasz "<target>%s</target>" 1496255570Strasz "<target_alias>%s</target_alias>" 1497255570Strasz "<header_digest>%s</header_digest>" 1498255570Strasz "<data_digest>%s</data_digest>" 1499255570Strasz "<max_data_segment_length>%zd</max_data_segment_length>" 1500255570Strasz "<immediate_data>%d</immediate_data>" 1501255570Strasz "<iser>%d</iser>" 1502255570Strasz "</connection>\n", 1503255570Strasz cs->cs_id, 1504255570Strasz cs->cs_initiator_name, cs->cs_initiator_addr, cs->cs_initiator_alias, 1505255570Strasz cs->cs_target->ct_name, cs->cs_target->ct_alias, 1506255570Strasz cs->cs_conn->ic_header_crc32c ? "CRC32C" : "None", 1507255570Strasz cs->cs_conn->ic_data_crc32c ? "CRC32C" : "None", 1508255570Strasz cs->cs_max_data_segment_length, 1509255570Strasz cs->cs_immediate_data, 1510255570Strasz cs->cs_conn->ic_iser); 1511255570Strasz if (error != 0) 1512255570Strasz break; 1513255570Strasz } 1514255570Strasz mtx_unlock(&softc->lock); 1515255570Strasz error = sbuf_printf(sb, "</ctlislist>\n"); 1516255570Strasz if (error != 0) { 1517255570Strasz sbuf_delete(sb); 1518255570Strasz ci->status = CTL_ISCSI_LIST_NEED_MORE_SPACE; 1519255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1520255570Strasz "Out of space, %d bytes is too small", cilp->alloc_len); 1521255570Strasz return; 1522255570Strasz } 1523255570Strasz sbuf_finish(sb); 1524255570Strasz 1525255570Strasz error = copyout(sbuf_data(sb), cilp->conn_xml, sbuf_len(sb) + 1); 1526255570Strasz cilp->fill_len = sbuf_len(sb) + 1; 1527255570Strasz ci->status = CTL_ISCSI_OK; 1528255570Strasz sbuf_delete(sb); 1529255570Strasz} 1530255570Strasz 1531255570Straszstatic void 1532255570Straszcfiscsi_ioctl_terminate(struct ctl_iscsi *ci) 1533255570Strasz{ 1534255570Strasz struct icl_pdu *response; 1535255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1536255570Strasz struct ctl_iscsi_terminate_params *citp; 1537255570Strasz struct cfiscsi_session *cs; 1538255570Strasz struct cfiscsi_softc *softc; 1539255570Strasz int found = 0; 1540255570Strasz 1541255570Strasz citp = (struct ctl_iscsi_terminate_params *)&(ci->data); 1542255570Strasz softc = &cfiscsi_softc; 1543255570Strasz 1544255570Strasz mtx_lock(&softc->lock); 1545255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1546255570Strasz if (citp->all == 0 && cs->cs_id != citp->connection_id && 1547255570Strasz strcmp(cs->cs_initiator_name, citp->initiator_name) != 0 && 1548255570Strasz strcmp(cs->cs_initiator_addr, citp->initiator_addr) != 0) 1549255570Strasz continue; 1550255570Strasz 1551255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1552255570Strasz if (response == NULL) { 1553255570Strasz /* 1554255570Strasz * Oh well. Just terminate the connection. 1555255570Strasz */ 1556255570Strasz } else { 1557255570Strasz bhsam = (struct iscsi_bhs_asynchronous_message *) 1558255570Strasz response->ip_bhs; 1559255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1560255570Strasz bhsam->bhsam_flags = 0x80; 1561255570Strasz bhsam->bhsam_0xffffffff = 0xffffffff; 1562255570Strasz bhsam->bhsam_async_event = 1563255570Strasz BHSAM_EVENT_TARGET_TERMINATES_SESSION; 1564255570Strasz cfiscsi_pdu_queue(response); 1565255570Strasz } 1566255570Strasz cfiscsi_session_terminate(cs); 1567255570Strasz found++; 1568255570Strasz } 1569255570Strasz mtx_unlock(&softc->lock); 1570255570Strasz 1571255570Strasz if (found == 0) { 1572255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1573255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1574255570Strasz "No matching connections found"); 1575255570Strasz return; 1576255570Strasz } 1577255570Strasz 1578255570Strasz ci->status = CTL_ISCSI_OK; 1579255570Strasz} 1580255570Strasz 1581255570Straszstatic void 1582255570Straszcfiscsi_ioctl_logout(struct ctl_iscsi *ci) 1583255570Strasz{ 1584255570Strasz struct icl_pdu *response; 1585255570Strasz struct iscsi_bhs_asynchronous_message *bhsam; 1586255570Strasz struct ctl_iscsi_logout_params *cilp; 1587255570Strasz struct cfiscsi_session *cs; 1588255570Strasz struct cfiscsi_softc *softc; 1589255570Strasz int found = 0; 1590255570Strasz 1591255570Strasz cilp = (struct ctl_iscsi_logout_params *)&(ci->data); 1592255570Strasz softc = &cfiscsi_softc; 1593255570Strasz 1594255570Strasz mtx_lock(&softc->lock); 1595255570Strasz TAILQ_FOREACH(cs, &softc->sessions, cs_next) { 1596255570Strasz if (cilp->all == 0 && cs->cs_id != cilp->connection_id && 1597255570Strasz strcmp(cs->cs_initiator_name, cilp->initiator_name) != 0 && 1598255570Strasz strcmp(cs->cs_initiator_addr, cilp->initiator_addr) != 0) 1599255570Strasz continue; 1600255570Strasz 1601255570Strasz response = icl_pdu_new_bhs(cs->cs_conn, M_NOWAIT); 1602255570Strasz if (response == NULL) { 1603255570Strasz ci->status = CTL_ISCSI_ERROR; 1604255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1605255570Strasz "Unable to allocate memory"); 1606255570Strasz mtx_unlock(&softc->lock); 1607255570Strasz return; 1608255570Strasz } 1609255570Strasz bhsam = 1610255570Strasz (struct iscsi_bhs_asynchronous_message *)response->ip_bhs; 1611255570Strasz bhsam->bhsam_opcode = ISCSI_BHS_OPCODE_ASYNC_MESSAGE; 1612255570Strasz bhsam->bhsam_flags = 0x80; 1613255570Strasz bhsam->bhsam_async_event = BHSAM_EVENT_TARGET_REQUESTS_LOGOUT; 1614255570Strasz bhsam->bhsam_parameter3 = htons(10); 1615255570Strasz cfiscsi_pdu_queue(response); 1616255570Strasz found++; 1617255570Strasz } 1618255570Strasz mtx_unlock(&softc->lock); 1619255570Strasz 1620255570Strasz if (found == 0) { 1621255570Strasz ci->status = CTL_ISCSI_SESSION_NOT_FOUND; 1622255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1623255570Strasz "No matching connections found"); 1624255570Strasz return; 1625255570Strasz } 1626255570Strasz 1627255570Strasz ci->status = CTL_ISCSI_OK; 1628255570Strasz} 1629255570Strasz 1630255570Strasz#ifdef ICL_KERNEL_PROXY 1631255570Straszstatic void 1632255570Straszcfiscsi_ioctl_listen(struct ctl_iscsi *ci) 1633255570Strasz{ 1634255570Strasz struct ctl_iscsi_listen_params *cilp; 1635255570Strasz struct sockaddr *sa; 1636255570Strasz int error; 1637255570Strasz 1638255570Strasz cilp = (struct ctl_iscsi_listen_params *)&(ci->data); 1639255570Strasz 1640255570Strasz if (cfiscsi_softc.listener == NULL) { 1641255570Strasz CFISCSI_DEBUG("no listener"); 1642255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "no listener"); 1643255570Strasz ci->status = CTL_ISCSI_ERROR; 1644255570Strasz return; 1645255570Strasz } 1646255570Strasz 1647255570Strasz error = getsockaddr(&sa, (void *)cilp->addr, cilp->addrlen); 1648255570Strasz if (error != 0) { 1649255570Strasz CFISCSI_DEBUG("getsockaddr, error %d", error); 1650255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "getsockaddr failed"); 1651255570Strasz ci->status = CTL_ISCSI_ERROR; 1652255570Strasz return; 1653255570Strasz } 1654255570Strasz 1655255570Strasz error = icl_listen_add(cfiscsi_softc.listener, cilp->iser, cilp->domain, 1656255570Strasz cilp->socktype, cilp->protocol, sa); 1657255570Strasz if (error != 0) { 1658255570Strasz free(sa, M_SONAME); 1659255570Strasz CFISCSI_DEBUG("icl_listen_add, error %d", error); 1660255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1661255570Strasz "icl_listen_add failed, error %d", error); 1662255570Strasz ci->status = CTL_ISCSI_ERROR; 1663255570Strasz return; 1664255570Strasz } 1665255570Strasz 1666255570Strasz ci->status = CTL_ISCSI_OK; 1667255570Strasz} 1668255570Strasz 1669255570Straszstatic void 1670255570Straszcfiscsi_ioctl_accept(struct ctl_iscsi *ci) 1671255570Strasz{ 1672255570Strasz struct ctl_iscsi_accept_params *ciap; 1673255570Strasz struct cfiscsi_session *cs; 1674255570Strasz int error; 1675255570Strasz 1676255570Strasz ciap = (struct ctl_iscsi_accept_params *)&(ci->data); 1677255570Strasz 1678255570Strasz mtx_lock(&cfiscsi_softc.lock); 1679255570Strasz for (;;) { 1680255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1681255570Strasz if (cs->cs_waiting_for_ctld) 1682255570Strasz break; 1683255570Strasz } 1684255570Strasz if (cs != NULL) 1685255570Strasz break; 1686255570Strasz error = cv_wait_sig(&cfiscsi_softc.accept_cv, &cfiscsi_softc.lock); 1687255570Strasz if (error != 0) { 1688255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1689255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "interrupted"); 1690255570Strasz ci->status = CTL_ISCSI_ERROR; 1691255570Strasz return; 1692255570Strasz } 1693255570Strasz } 1694255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1695255570Strasz 1696255570Strasz cs->cs_waiting_for_ctld = false; 1697255570Strasz cs->cs_login_phase = true; 1698255570Strasz 1699255570Strasz ciap->connection_id = cs->cs_id; 1700255570Strasz ci->status = CTL_ISCSI_OK; 1701255570Strasz} 1702255570Strasz 1703255570Straszstatic void 1704255570Straszcfiscsi_ioctl_send(struct ctl_iscsi *ci) 1705255570Strasz{ 1706255570Strasz struct ctl_iscsi_send_params *cisp; 1707255570Strasz struct cfiscsi_session *cs; 1708255570Strasz struct icl_pdu *ip; 1709255570Strasz size_t datalen; 1710255570Strasz void *data; 1711255570Strasz int error; 1712255570Strasz 1713255570Strasz cisp = (struct ctl_iscsi_send_params *)&(ci->data); 1714255570Strasz 1715255570Strasz mtx_lock(&cfiscsi_softc.lock); 1716255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1717255570Strasz if (cs->cs_id == cisp->connection_id) 1718255570Strasz break; 1719255570Strasz } 1720255570Strasz if (cs == NULL) { 1721255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1722255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1723255570Strasz ci->status = CTL_ISCSI_ERROR; 1724255570Strasz return; 1725255570Strasz } 1726255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1727255570Strasz 1728255570Strasz#if 0 1729255570Strasz if (cs->cs_login_phase == false) 1730255570Strasz return (EBUSY); 1731255570Strasz#endif 1732255570Strasz 1733255570Strasz if (cs->cs_terminating) { 1734255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection is terminating"); 1735255570Strasz ci->status = CTL_ISCSI_ERROR; 1736255570Strasz return; 1737255570Strasz } 1738255570Strasz 1739255570Strasz datalen = cisp->data_segment_len; 1740255570Strasz /* 1741255570Strasz * XXX 1742255570Strasz */ 1743255570Strasz //if (datalen > CFISCSI_MAX_DATA_SEGMENT_LENGTH) { 1744255570Strasz if (datalen > 65535) { 1745255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1746255570Strasz ci->status = CTL_ISCSI_ERROR; 1747255570Strasz return; 1748255570Strasz } 1749255570Strasz if (datalen > 0) { 1750255570Strasz data = malloc(datalen, M_CFISCSI, M_WAITOK); 1751255570Strasz error = copyin(cisp->data_segment, data, datalen); 1752255570Strasz if (error != 0) { 1753255570Strasz free(data, M_CFISCSI); 1754255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "copyin error %d", error); 1755255570Strasz ci->status = CTL_ISCSI_ERROR; 1756255570Strasz return; 1757255570Strasz } 1758255570Strasz } 1759255570Strasz 1760255570Strasz ip = icl_pdu_new_bhs(cs->cs_conn, M_WAITOK); 1761255570Strasz memcpy(ip->ip_bhs, cisp->bhs, sizeof(*ip->ip_bhs)); 1762255570Strasz if (datalen > 0) { 1763255570Strasz icl_pdu_append_data(ip, data, datalen, M_WAITOK); 1764255570Strasz free(data, M_CFISCSI); 1765255570Strasz } 1766255570Strasz icl_pdu_queue(ip); 1767255570Strasz ci->status = CTL_ISCSI_OK; 1768255570Strasz} 1769255570Strasz 1770255570Straszstatic void 1771255570Straszcfiscsi_ioctl_receive(struct ctl_iscsi *ci) 1772255570Strasz{ 1773255570Strasz struct ctl_iscsi_receive_params *cirp; 1774255570Strasz struct cfiscsi_session *cs; 1775255570Strasz struct icl_pdu *ip; 1776255570Strasz void *data; 1777255570Strasz 1778255570Strasz cirp = (struct ctl_iscsi_receive_params *)&(ci->data); 1779255570Strasz 1780255570Strasz mtx_lock(&cfiscsi_softc.lock); 1781255570Strasz TAILQ_FOREACH(cs, &cfiscsi_softc.sessions, cs_next) { 1782255570Strasz if (cs->cs_id == cirp->connection_id) 1783255570Strasz break; 1784255570Strasz } 1785255570Strasz if (cs == NULL) { 1786255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1787255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection not found"); 1788255570Strasz ci->status = CTL_ISCSI_ERROR; 1789255570Strasz return; 1790255570Strasz } 1791255570Strasz mtx_unlock(&cfiscsi_softc.lock); 1792255570Strasz 1793255570Strasz#if 0 1794255570Strasz if (is->is_login_phase == false) 1795255570Strasz return (EBUSY); 1796255570Strasz#endif 1797255570Strasz 1798255570Strasz CFISCSI_SESSION_LOCK(cs); 1799255570Strasz while (cs->cs_login_pdu == NULL && 1800255570Strasz cs->cs_terminating == false) 1801255570Strasz cv_wait(&cs->cs_login_cv, &cs->cs_lock); 1802255570Strasz if (cs->cs_terminating) { 1803255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1804255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "connection terminating"); 1805255570Strasz ci->status = CTL_ISCSI_ERROR; 1806255570Strasz return; 1807255570Strasz } 1808255570Strasz ip = cs->cs_login_pdu; 1809255570Strasz cs->cs_login_pdu = NULL; 1810255570Strasz CFISCSI_SESSION_UNLOCK(cs); 1811255570Strasz 1812255570Strasz if (ip->ip_data_len > cirp->data_segment_len) { 1813255570Strasz icl_pdu_free(ip); 1814255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), "data segment too big"); 1815255570Strasz ci->status = CTL_ISCSI_ERROR; 1816255570Strasz return; 1817255570Strasz } 1818255570Strasz 1819255570Strasz copyout(ip->ip_bhs, cirp->bhs, sizeof(*ip->ip_bhs)); 1820255570Strasz if (ip->ip_data_len > 0) { 1821255570Strasz data = malloc(ip->ip_data_len, M_CFISCSI, M_WAITOK); 1822255570Strasz icl_pdu_get_data(ip, 0, data, ip->ip_data_len); 1823255570Strasz copyout(data, cirp->data_segment, ip->ip_data_len); 1824255570Strasz free(data, M_CFISCSI); 1825255570Strasz } 1826255570Strasz 1827255570Strasz icl_pdu_free(ip); 1828255570Strasz ci->status = CTL_ISCSI_OK; 1829255570Strasz} 1830255570Strasz 1831255570Straszstatic void 1832255570Straszcfiscsi_ioctl_close(struct ctl_iscsi *ci) 1833255570Strasz{ 1834255570Strasz /* 1835255570Strasz * XXX 1836255570Strasz */ 1837255570Strasz} 1838255570Strasz#endif /* !ICL_KERNEL_PROXY */ 1839255570Strasz 1840255570Straszstatic int 1841255570Straszcfiscsi_ioctl(struct cdev *dev, 1842255570Strasz u_long cmd, caddr_t addr, int flag, struct thread *td) 1843255570Strasz{ 1844255570Strasz struct ctl_iscsi *ci; 1845255570Strasz 1846255570Strasz if (cmd != CTL_ISCSI) 1847255570Strasz return (ENOTTY); 1848255570Strasz 1849255570Strasz ci = (struct ctl_iscsi *)addr; 1850255570Strasz switch (ci->type) { 1851255570Strasz case CTL_ISCSI_HANDOFF: 1852255570Strasz cfiscsi_ioctl_handoff(ci); 1853255570Strasz break; 1854255570Strasz case CTL_ISCSI_LIST: 1855255570Strasz cfiscsi_ioctl_list(ci); 1856255570Strasz break; 1857255570Strasz case CTL_ISCSI_TERMINATE: 1858255570Strasz cfiscsi_ioctl_terminate(ci); 1859255570Strasz break; 1860255570Strasz case CTL_ISCSI_LOGOUT: 1861255570Strasz cfiscsi_ioctl_logout(ci); 1862255570Strasz break; 1863255570Strasz#ifdef ICL_KERNEL_PROXY 1864255570Strasz case CTL_ISCSI_LISTEN: 1865255570Strasz cfiscsi_ioctl_listen(ci); 1866255570Strasz break; 1867255570Strasz case CTL_ISCSI_ACCEPT: 1868255570Strasz cfiscsi_ioctl_accept(ci); 1869255570Strasz break; 1870255570Strasz case CTL_ISCSI_SEND: 1871255570Strasz cfiscsi_ioctl_send(ci); 1872255570Strasz break; 1873255570Strasz case CTL_ISCSI_RECEIVE: 1874255570Strasz cfiscsi_ioctl_receive(ci); 1875255570Strasz break; 1876255570Strasz case CTL_ISCSI_CLOSE: 1877255570Strasz cfiscsi_ioctl_close(ci); 1878255570Strasz break; 1879255570Strasz#endif /* ICL_KERNEL_PROXY */ 1880255570Strasz default: 1881255570Strasz ci->status = CTL_ISCSI_ERROR; 1882255570Strasz snprintf(ci->error_str, sizeof(ci->error_str), 1883255570Strasz "%s: invalid iSCSI request type %d", __func__, ci->type); 1884255570Strasz break; 1885255570Strasz } 1886255570Strasz 1887255570Strasz return (0); 1888255570Strasz} 1889255570Strasz 1890255570Straszstatic int 1891255570Straszcfiscsi_devid(struct ctl_scsiio *ctsio, int alloc_len) 1892255570Strasz{ 1893255570Strasz struct cfiscsi_session *cs; 1894255570Strasz struct scsi_vpd_device_id *devid_ptr; 1895255570Strasz struct scsi_vpd_id_descriptor *desc, *desc1; 1896255570Strasz struct scsi_vpd_id_descriptor *desc2, *desc3; /* for types 4h and 5h */ 1897255570Strasz struct scsi_vpd_id_t10 *t10id; 1898255570Strasz struct ctl_lun *lun; 1899255570Strasz const struct icl_pdu *request; 1900255570Strasz size_t devid_len, wwpn_len; 1901255570Strasz 1902255570Strasz lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr; 1903255570Strasz request = ctsio->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 1904255570Strasz cs = PDU_SESSION(request); 1905255570Strasz 1906255570Strasz wwpn_len = strlen(cs->cs_target->ct_name); 1907255570Strasz wwpn_len += strlen(",t,0x01"); 1908255570Strasz wwpn_len += 1; /* '\0' */ 1909255570Strasz if ((wwpn_len % 4) != 0) 1910255570Strasz wwpn_len += (4 - (wwpn_len % 4)); 1911255570Strasz 1912255570Strasz devid_len = sizeof(struct scsi_vpd_device_id) + 1913255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 1914255570Strasz sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN + 1915255570Strasz sizeof(struct scsi_vpd_id_descriptor) + wwpn_len + 1916255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 1917255570Strasz sizeof(struct scsi_vpd_id_rel_trgt_port_id) + 1918255570Strasz sizeof(struct scsi_vpd_id_descriptor) + 1919255570Strasz sizeof(struct scsi_vpd_id_trgt_port_grp_id); 1920255570Strasz 1921255570Strasz ctsio->kern_data_ptr = malloc(devid_len, M_CTL, M_WAITOK | M_ZERO); 1922255570Strasz devid_ptr = (struct scsi_vpd_device_id *)ctsio->kern_data_ptr; 1923255570Strasz ctsio->kern_sg_entries = 0; 1924255570Strasz 1925255570Strasz if (devid_len < alloc_len) { 1926255570Strasz ctsio->residual = alloc_len - devid_len; 1927255570Strasz ctsio->kern_data_len = devid_len; 1928255570Strasz ctsio->kern_total_len = devid_len; 1929255570Strasz } else { 1930255570Strasz ctsio->residual = 0; 1931255570Strasz ctsio->kern_data_len = alloc_len; 1932255570Strasz ctsio->kern_total_len = alloc_len; 1933255570Strasz } 1934255570Strasz ctsio->kern_data_resid = 0; 1935255570Strasz ctsio->kern_rel_offset = 0; 1936255570Strasz ctsio->kern_sg_entries = 0; 1937255570Strasz 1938255570Strasz desc = (struct scsi_vpd_id_descriptor *)devid_ptr->desc_list; 1939255570Strasz t10id = (struct scsi_vpd_id_t10 *)&desc->identifier[0]; 1940255570Strasz desc1 = (struct scsi_vpd_id_descriptor *)(&desc->identifier[0] + 1941255570Strasz sizeof(struct scsi_vpd_id_t10) + CTL_DEVID_LEN); 1942255570Strasz desc2 = (struct scsi_vpd_id_descriptor *)(&desc1->identifier[0] + 1943255570Strasz wwpn_len); 1944255570Strasz desc3 = (struct scsi_vpd_id_descriptor *)(&desc2->identifier[0] + 1945255570Strasz sizeof(struct scsi_vpd_id_rel_trgt_port_id)); 1946255570Strasz 1947255570Strasz if (lun != NULL) 1948255570Strasz devid_ptr->device = (SID_QUAL_LU_CONNECTED << 5) | 1949255570Strasz lun->be_lun->lun_type; 1950255570Strasz else 1951255570Strasz devid_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT; 1952255570Strasz 1953255570Strasz devid_ptr->page_code = SVPD_DEVICE_ID; 1954255570Strasz 1955255570Strasz scsi_ulto2b(devid_len - 4, devid_ptr->length); 1956255570Strasz 1957255570Strasz /* 1958255570Strasz * We're using a LUN association here. i.e., this device ID is a 1959255570Strasz * per-LUN identifier. 1960255570Strasz */ 1961255570Strasz desc->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_ASCII; 1962255570Strasz desc->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_LUN | SVPD_ID_TYPE_T10; 1963255570Strasz desc->length = sizeof(*t10id) + CTL_DEVID_LEN; 1964255570Strasz strncpy((char *)t10id->vendor, CTL_VENDOR, sizeof(t10id->vendor)); 1965255570Strasz 1966255570Strasz /* 1967255570Strasz * If we've actually got a backend, copy the device id from the 1968255570Strasz * per-LUN data. Otherwise, set it to all spaces. 1969255570Strasz */ 1970255570Strasz if (lun != NULL) { 1971255570Strasz /* 1972255570Strasz * Copy the backend's LUN ID. 1973255570Strasz */ 1974255570Strasz strncpy((char *)t10id->vendor_spec_id, 1975255570Strasz (char *)lun->be_lun->device_id, CTL_DEVID_LEN); 1976255570Strasz } else { 1977255570Strasz /* 1978255570Strasz * No backend, set this to spaces. 1979255570Strasz */ 1980255570Strasz memset(t10id->vendor_spec_id, 0x20, CTL_DEVID_LEN); 1981255570Strasz } 1982255570Strasz 1983255570Strasz /* 1984255570Strasz * desc1 is for the WWPN which is a port asscociation. 1985255570Strasz */ 1986255570Strasz desc1->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_UTF8; 1987255570Strasz desc1->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 1988255570Strasz SVPD_ID_TYPE_SCSI_NAME; 1989255570Strasz desc1->length = wwpn_len; 1990255570Strasz snprintf(desc1->identifier, wwpn_len, "%s,t,0x%x", 1991255570Strasz cs->cs_target->ct_name, cs->cs_portal_group_tag); 1992255570Strasz 1993255570Strasz /* 1994255570Strasz * desc2 is for the Relative Target Port(type 4h) identifier 1995255570Strasz */ 1996255570Strasz desc2->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY; 1997255570Strasz desc2->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 1998255570Strasz SVPD_ID_TYPE_RELTARG; 1999255570Strasz desc2->length = 4; 2000255570Strasz desc2->identifier[3] = 1; 2001255570Strasz 2002255570Strasz /* 2003255570Strasz * desc3 is for the Target Port Group(type 5h) identifier 2004255570Strasz */ 2005255570Strasz desc3->proto_codeset = (SCSI_PROTO_ISCSI << 4) | SVPD_ID_CODESET_BINARY; 2006255570Strasz desc3->id_type = SVPD_ID_PIV | SVPD_ID_ASSOC_PORT | 2007255570Strasz SVPD_ID_TYPE_TPORTGRP; 2008255570Strasz desc3->length = 4; 2009255570Strasz desc3->identifier[3] = 1; 2010255570Strasz 2011255570Strasz ctsio->scsi_status = SCSI_STATUS_OK; 2012255570Strasz 2013255570Strasz ctsio->be_move_done = ctl_config_move_done; 2014255570Strasz ctl_datamove((union ctl_io *)ctsio); 2015255570Strasz 2016255570Strasz return (CTL_RETVAL_COMPLETE); 2017255570Strasz} 2018255570Strasz 2019255570Straszstatic void 2020255570Straszcfiscsi_target_hold(struct cfiscsi_target *ct) 2021255570Strasz{ 2022255570Strasz 2023255570Strasz refcount_acquire(&ct->ct_refcount); 2024255570Strasz} 2025255570Strasz 2026255570Straszstatic void 2027255570Straszcfiscsi_target_release(struct cfiscsi_target *ct) 2028255570Strasz{ 2029255570Strasz int old; 2030255570Strasz struct cfiscsi_softc *softc; 2031255570Strasz 2032255570Strasz softc = ct->ct_softc; 2033255570Strasz 2034255570Strasz old = ct->ct_refcount; 2035255570Strasz if (old > 1 && atomic_cmpset_int(&ct->ct_refcount, old, old - 1)) 2036255570Strasz return; 2037255570Strasz 2038255570Strasz mtx_lock(&softc->lock); 2039255570Strasz if (refcount_release(&ct->ct_refcount)) { 2040255570Strasz TAILQ_REMOVE(&softc->targets, ct, ct_next); 2041255570Strasz mtx_unlock(&softc->lock); 2042255570Strasz free(ct, M_CFISCSI); 2043255570Strasz 2044255570Strasz return; 2045255570Strasz } 2046255570Strasz mtx_unlock(&softc->lock); 2047255570Strasz} 2048255570Strasz 2049255570Straszstatic struct cfiscsi_target * 2050255570Straszcfiscsi_target_find(struct cfiscsi_softc *softc, const char *name) 2051255570Strasz{ 2052255570Strasz struct cfiscsi_target *ct; 2053255570Strasz 2054255570Strasz mtx_lock(&softc->lock); 2055255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2056255570Strasz if (strcmp(name, ct->ct_name) != 0) 2057255570Strasz continue; 2058255570Strasz cfiscsi_target_hold(ct); 2059255570Strasz mtx_unlock(&softc->lock); 2060255570Strasz return (ct); 2061255570Strasz } 2062255570Strasz mtx_unlock(&softc->lock); 2063255570Strasz 2064255570Strasz return (NULL); 2065255570Strasz} 2066255570Strasz 2067255570Straszstatic struct cfiscsi_target * 2068255570Straszcfiscsi_target_find_or_create(struct cfiscsi_softc *softc, const char *name, 2069255570Strasz const char *alias) 2070255570Strasz{ 2071255570Strasz struct cfiscsi_target *ct, *newct; 2072255570Strasz int i; 2073255570Strasz 2074255570Strasz if (name[0] == '\0' || strlen(name) >= CTL_ISCSI_NAME_LEN) 2075255570Strasz return (NULL); 2076255570Strasz 2077255570Strasz newct = malloc(sizeof(*newct), M_CFISCSI, M_WAITOK | M_ZERO); 2078255570Strasz 2079255570Strasz mtx_lock(&softc->lock); 2080255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2081255570Strasz if (strcmp(name, ct->ct_name) != 0) 2082255570Strasz continue; 2083255570Strasz cfiscsi_target_hold(ct); 2084255570Strasz mtx_unlock(&softc->lock); 2085255570Strasz free(newct, M_CFISCSI); 2086255570Strasz return (ct); 2087255570Strasz } 2088255570Strasz 2089255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) 2090255570Strasz newct->ct_luns[i] = -1; 2091255570Strasz 2092255570Strasz strlcpy(newct->ct_name, name, sizeof(newct->ct_name)); 2093255570Strasz if (alias != NULL) 2094255570Strasz strlcpy(newct->ct_alias, alias, sizeof(newct->ct_alias)); 2095255570Strasz refcount_init(&newct->ct_refcount, 1); 2096255570Strasz newct->ct_softc = softc; 2097255570Strasz TAILQ_INSERT_TAIL(&softc->targets, newct, ct_next); 2098255570Strasz mtx_unlock(&softc->lock); 2099255570Strasz 2100255570Strasz return (newct); 2101255570Strasz} 2102255570Strasz 2103255570Strasz/* 2104255570Strasz * Takes LUN from the target space and returns LUN from the CTL space. 2105255570Strasz */ 2106255570Straszstatic uint32_t 2107255570Straszcfiscsi_map_lun(void *arg, uint32_t lun) 2108255570Strasz{ 2109255570Strasz struct cfiscsi_session *cs; 2110255570Strasz 2111255570Strasz cs = arg; 2112255570Strasz 2113255570Strasz if (lun >= CTL_MAX_LUNS) { 2114255570Strasz CFISCSI_DEBUG("requested lun number %d is higher " 2115255570Strasz "than maximum %d", lun, CTL_MAX_LUNS - 1); 2116255570Strasz return (0xffffffff); 2117255570Strasz } 2118255570Strasz 2119255570Strasz if (cs->cs_target->ct_luns[lun] < 0) 2120255570Strasz return (0xffffffff); 2121255570Strasz 2122255570Strasz return (cs->cs_target->ct_luns[lun]); 2123255570Strasz} 2124255570Strasz 2125255570Straszstatic int 2126255570Straszcfiscsi_target_set_lun(struct cfiscsi_target *ct, 2127255570Strasz unsigned long lun_id, unsigned long ctl_lun_id) 2128255570Strasz{ 2129255570Strasz 2130255570Strasz if (lun_id >= CTL_MAX_LUNS) { 2131255570Strasz CFISCSI_WARN("requested lun number %ld is higher " 2132255570Strasz "than maximum %d", lun_id, CTL_MAX_LUNS - 1); 2133255570Strasz return (-1); 2134255570Strasz } 2135255570Strasz 2136255570Strasz if (ct->ct_luns[lun_id] >= 0) { 2137255570Strasz /* 2138255570Strasz * CTL calls cfiscsi_lun_enable() twice for each LUN - once 2139255570Strasz * when the LUN is created, and a second time just before 2140255570Strasz * the port is brought online; don't emit warnings 2141255570Strasz * for that case. 2142255570Strasz */ 2143255570Strasz if (ct->ct_luns[lun_id] == ctl_lun_id) 2144255570Strasz return (0); 2145255570Strasz CFISCSI_WARN("lun %ld already allocated", lun_id); 2146255570Strasz return (-1); 2147255570Strasz } 2148255570Strasz 2149255570Strasz#if 0 2150255570Strasz CFISCSI_DEBUG("adding mapping for lun %ld, target %s " 2151255570Strasz "to ctl lun %ld", lun_id, ct->ct_name, ctl_lun_id); 2152255570Strasz#endif 2153255570Strasz 2154255570Strasz ct->ct_luns[lun_id] = ctl_lun_id; 2155255570Strasz cfiscsi_target_hold(ct); 2156255570Strasz 2157255570Strasz return (0); 2158255570Strasz} 2159255570Strasz 2160255570Straszstatic int 2161255570Straszcfiscsi_target_unset_lun(struct cfiscsi_target *ct, unsigned long lun_id) 2162255570Strasz{ 2163255570Strasz 2164255570Strasz if (ct->ct_luns[lun_id] < 0) { 2165255570Strasz CFISCSI_WARN("lun %ld not allocated", lun_id); 2166255570Strasz return (-1); 2167255570Strasz } 2168255570Strasz 2169255570Strasz ct->ct_luns[lun_id] = -1; 2170255570Strasz cfiscsi_target_release(ct); 2171255570Strasz 2172255570Strasz return (0); 2173255570Strasz} 2174255570Strasz 2175255570Straszstatic int 2176255570Straszcfiscsi_lun_enable(void *arg, struct ctl_id target_id, int lun_id) 2177255570Strasz{ 2178255570Strasz struct cfiscsi_softc *softc; 2179255570Strasz struct cfiscsi_target *ct; 2180255570Strasz struct ctl_be_lun_option *opt; 2181255570Strasz const char *target = NULL, *target_alias = NULL; 2182255570Strasz const char *lun = NULL; 2183255570Strasz unsigned long tmp; 2184255570Strasz 2185255570Strasz softc = (struct cfiscsi_softc *)arg; 2186255570Strasz 2187255570Strasz STAILQ_FOREACH(opt, 2188255570Strasz &control_softc->ctl_luns[lun_id]->be_lun->options, links) { 2189255570Strasz if (strcmp(opt->name, "cfiscsi_target") == 0) 2190255570Strasz target = opt->value; 2191255570Strasz else if (strcmp(opt->name, "cfiscsi_target_alias") == 0) 2192255570Strasz target_alias = opt->value; 2193255570Strasz else if (strcmp(opt->name, "cfiscsi_lun") == 0) 2194255570Strasz lun = opt->value; 2195255570Strasz } 2196255570Strasz 2197255570Strasz if (target == NULL && lun == NULL) 2198255570Strasz return (0); 2199255570Strasz 2200255570Strasz if (target == NULL || lun == NULL) { 2201255570Strasz CFISCSI_WARN("lun added with cfiscsi_target, but without " 2202255570Strasz "cfiscsi_lun, or the other way around; ignoring"); 2203255570Strasz return (0); 2204255570Strasz } 2205255570Strasz 2206255570Strasz ct = cfiscsi_target_find_or_create(softc, target, target_alias); 2207255570Strasz if (ct == NULL) { 2208255570Strasz CFISCSI_WARN("failed to create target \"%s\"", target); 2209255570Strasz return (0); 2210255570Strasz } 2211255570Strasz 2212255570Strasz tmp = strtoul(lun, NULL, 10); 2213255570Strasz cfiscsi_target_set_lun(ct, tmp, lun_id); 2214255570Strasz return (0); 2215255570Strasz} 2216255570Strasz 2217255570Straszstatic int 2218255570Straszcfiscsi_lun_disable(void *arg, struct ctl_id target_id, int lun_id) 2219255570Strasz{ 2220255570Strasz struct cfiscsi_softc *softc; 2221255570Strasz struct cfiscsi_target *ct; 2222255570Strasz int i; 2223255570Strasz 2224255570Strasz softc = (struct cfiscsi_softc *)arg; 2225255570Strasz 2226255570Strasz mtx_lock(&softc->lock); 2227255570Strasz TAILQ_FOREACH(ct, &softc->targets, ct_next) { 2228255570Strasz for (i = 0; i < CTL_MAX_LUNS; i++) { 2229255570Strasz if (ct->ct_luns[i] < 0) 2230255570Strasz continue; 2231255570Strasz if (ct->ct_luns[i] != lun_id) 2232255570Strasz continue; 2233255570Strasz cfiscsi_target_unset_lun(ct, i); 2234255570Strasz break; 2235255570Strasz } 2236255570Strasz } 2237255570Strasz mtx_unlock(&softc->lock); 2238255570Strasz return (0); 2239255570Strasz} 2240255570Strasz 2241255570Straszstatic void 2242255570Straszcfiscsi_datamove(union ctl_io *io) 2243255570Strasz{ 2244255570Strasz struct cfiscsi_session *cs; 2245255570Strasz struct icl_pdu *request, *response; 2246255570Strasz const struct iscsi_bhs_scsi_command *bhssc; 2247255570Strasz struct iscsi_bhs_data_in *bhsdi; 2248255570Strasz struct iscsi_bhs_r2t *bhsr2t; 2249255570Strasz struct cfiscsi_data_wait *cdw; 2250255570Strasz struct ctl_sg_entry ctl_sg_entry, *ctl_sglist; 2251255570Strasz size_t copy_len, len, off; 2252255570Strasz const char *addr; 2253255824Strasz int ctl_sg_count, error, i; 2254255570Strasz uint32_t target_transfer_tag; 2255255570Strasz bool done; 2256255570Strasz 2257255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2258255570Strasz cs = PDU_SESSION(request); 2259255570Strasz 2260255570Strasz bhssc = (const struct iscsi_bhs_scsi_command *)request->ip_bhs; 2261255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2262255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2263255570Strasz ("bhssc->bhssc_opcode != ISCSI_BHS_OPCODE_SCSI_COMMAND")); 2264255570Strasz 2265255570Strasz if (io->scsiio.kern_sg_entries > 0) { 2266255570Strasz ctl_sglist = (struct ctl_sg_entry *)io->scsiio.kern_data_ptr; 2267255570Strasz ctl_sg_count = io->scsiio.kern_sg_entries; 2268255570Strasz } else { 2269255570Strasz ctl_sglist = &ctl_sg_entry; 2270255570Strasz ctl_sglist->addr = io->scsiio.kern_data_ptr; 2271255570Strasz ctl_sglist->len = io->scsiio.kern_data_len; 2272255570Strasz ctl_sg_count = 1; 2273255570Strasz } 2274255570Strasz 2275255570Strasz /* 2276255570Strasz * We need to record it so that we can properly report 2277255570Strasz * underflow/underflow. 2278255570Strasz */ 2279255570Strasz PDU_TOTAL_TRANSFER_LEN(request) = io->scsiio.kern_total_len; 2280255570Strasz 2281255570Strasz if ((io->io_hdr.flags & CTL_FLAG_DATA_MASK) == CTL_FLAG_DATA_IN) { 2282255570Strasz#if 0 2283255570Strasz if (ctl_sg_count > 1) 2284255570Strasz CFISCSI_SESSION_DEBUG(cs, "ctl_sg_count = %d", ctl_sg_count); 2285255570Strasz#endif 2286255570Strasz 2287255570Strasz /* 2288255570Strasz * This is the offset within the current SCSI command; 2289255570Strasz * i.e. for the first call of datamove(), it will be 0, 2290255570Strasz * and for subsequent ones it will be the sum of lengths 2291255570Strasz * of previous ones. 2292255570Strasz */ 2293255570Strasz off = htonl(io->scsiio.kern_rel_offset); 2294255570Strasz if (off > 1) 2295255570Strasz CFISCSI_SESSION_DEBUG(cs, "off = %zd", off); 2296255570Strasz 2297255570Strasz i = 0; 2298255570Strasz addr = NULL; 2299255570Strasz len = 0; 2300255570Strasz response = NULL; 2301255570Strasz bhsdi = NULL; 2302255570Strasz for (;;) { 2303255570Strasz KASSERT(i < ctl_sg_count, ("i >= ctl_sg_count")); 2304255570Strasz if (response == NULL) { 2305255570Strasz response = 2306255824Strasz cfiscsi_pdu_new_response(request, M_NOWAIT); 2307255824Strasz if (response == NULL) { 2308255824Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2309255824Strasz "allocate memory; dropping connection"); 2310255837Strasz icl_pdu_free(request); 2311255824Strasz cfiscsi_session_terminate(cs); 2312255824Strasz return; 2313255824Strasz } 2314255570Strasz bhsdi = (struct iscsi_bhs_data_in *) 2315255570Strasz response->ip_bhs; 2316255570Strasz bhsdi->bhsdi_opcode = 2317255570Strasz ISCSI_BHS_OPCODE_SCSI_DATA_IN; 2318255570Strasz bhsdi->bhsdi_initiator_task_tag = 2319255570Strasz bhssc->bhssc_initiator_task_tag; 2320255570Strasz bhsdi->bhsdi_datasn = 2321255570Strasz htonl(PDU_EXPDATASN(request)); 2322255570Strasz PDU_EXPDATASN(request)++; 2323255570Strasz bhsdi->bhsdi_buffer_offset = htonl(off); 2324255570Strasz } 2325255570Strasz 2326255570Strasz if (len == 0) { 2327255570Strasz addr = ctl_sglist[i].addr; 2328255570Strasz len = ctl_sglist[i].len; 2329255570Strasz KASSERT(len > 0, ("len <= 0")); 2330255570Strasz } 2331255570Strasz 2332255570Strasz copy_len = len; 2333255570Strasz if (response->ip_data_len + copy_len > 2334255570Strasz cs->cs_max_data_segment_length) 2335255570Strasz copy_len = cs->cs_max_data_segment_length - 2336255570Strasz response->ip_data_len; 2337255570Strasz KASSERT(copy_len <= len, ("copy_len > len")); 2338255824Strasz error = icl_pdu_append_data(response, addr, copy_len, M_NOWAIT); 2339255824Strasz if (error != 0) { 2340255824Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2341255824Strasz "allocate memory; dropping connection"); 2342255837Strasz icl_pdu_free(request); 2343255824Strasz icl_pdu_free(response); 2344255824Strasz cfiscsi_session_terminate(cs); 2345255824Strasz return; 2346255824Strasz } 2347255570Strasz addr += copy_len; 2348255570Strasz len -= copy_len; 2349255570Strasz off += copy_len; 2350255570Strasz io->scsiio.ext_data_filled += copy_len; 2351255570Strasz 2352255570Strasz if (len == 0) { 2353255570Strasz /* 2354255570Strasz * End of scatter-gather segment; 2355255570Strasz * proceed to the next one... 2356255570Strasz */ 2357255570Strasz if (i == ctl_sg_count - 1) { 2358255570Strasz /* 2359255570Strasz * ... unless this was the last one. 2360255570Strasz */ 2361255570Strasz break; 2362255570Strasz } 2363255570Strasz i++; 2364255570Strasz } 2365255570Strasz 2366255570Strasz if (response->ip_data_len == 2367255570Strasz cs->cs_max_data_segment_length) { 2368255570Strasz /* 2369255570Strasz * Can't stuff more data into the current PDU; 2370255570Strasz * queue it. Note that's not enough to check 2371255570Strasz * for kern_data_resid == 0 instead; there 2372255570Strasz * may be several Data-In PDUs for the final 2373255570Strasz * call to cfiscsi_datamove(), and we want 2374255570Strasz * to set the F flag only on the last of them. 2375255570Strasz */ 2376255570Strasz if (off == io->scsiio.kern_total_len) 2377255570Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2378255570Strasz KASSERT(response->ip_data_len > 0, 2379255570Strasz ("sending empty Data-In")); 2380255570Strasz cfiscsi_pdu_queue(response); 2381255570Strasz response = NULL; 2382255570Strasz bhsdi = NULL; 2383255570Strasz } 2384255570Strasz } 2385255570Strasz KASSERT(i == ctl_sg_count - 1, ("missed SG segment")); 2386255570Strasz KASSERT(len == 0, ("missed data from SG segment")); 2387255570Strasz if (response != NULL) { 2388255570Strasz if (off == io->scsiio.kern_total_len) { 2389255570Strasz bhsdi->bhsdi_flags |= BHSDI_FLAGS_F; 2390255570Strasz } else { 2391255570Strasz CFISCSI_SESSION_DEBUG(cs, "not setting the F flag; " 2392255570Strasz "have %zd, need %zd", off, 2393255570Strasz (size_t)io->scsiio.kern_total_len); 2394255570Strasz } 2395255570Strasz KASSERT(response->ip_data_len > 0, 2396255570Strasz ("sending empty Data-In")); 2397255570Strasz cfiscsi_pdu_queue(response); 2398255570Strasz } 2399255570Strasz 2400255570Strasz io->scsiio.be_move_done(io); 2401255570Strasz } else { 2402255570Strasz CFISCSI_SESSION_LOCK(cs); 2403255570Strasz target_transfer_tag = cs->cs_target_transfer_tag; 2404255570Strasz cs->cs_target_transfer_tag++; 2405255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2406255570Strasz 2407255570Strasz#if 0 2408255570Strasz CFISCSI_SESSION_DEBUG(cs, "expecting Data-Out with initiator " 2409255570Strasz "task tag 0x%x, target transfer tag 0x%x", 2410255570Strasz bhssc->bhssc_initiator_task_tag, target_transfer_tag); 2411255570Strasz#endif 2412255837Strasz cdw = uma_zalloc(cfiscsi_data_wait_zone, M_NOWAIT | M_ZERO); 2413255837Strasz if (cdw == NULL) { 2414255837Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2415255837Strasz "allocate memory; dropping connection"); 2416255837Strasz icl_pdu_free(request); 2417255837Strasz cfiscsi_session_terminate(cs); 2418255837Strasz } 2419255570Strasz cdw->cdw_ctl_io = io; 2420255570Strasz cdw->cdw_target_transfer_tag = htonl(target_transfer_tag); 2421255570Strasz cdw->cdw_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2422255570Strasz 2423255570Strasz if (cs->cs_immediate_data && 2424255570Strasz icl_pdu_data_segment_length(request) > 0) { 2425255570Strasz done = cfiscsi_handle_data_segment(request, cdw); 2426255570Strasz if (done) { 2427255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2428255570Strasz io->scsiio.be_move_done(io); 2429255570Strasz return; 2430255570Strasz } 2431255570Strasz 2432255570Strasz#if 0 2433255570Strasz if (io->scsiio.ext_data_filled != 0) 2434255570Strasz CFISCSI_SESSION_DEBUG(cs, "got %zd bytes of immediate data, need %zd", 2435255570Strasz io->scsiio.ext_data_filled, io->scsiio.kern_data_len); 2436255570Strasz#endif 2437255570Strasz } 2438255570Strasz 2439255570Strasz CFISCSI_SESSION_LOCK(cs); 2440255570Strasz TAILQ_INSERT_TAIL(&cs->cs_waiting_for_data_out, cdw, cdw_next); 2441255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2442255570Strasz 2443255570Strasz /* 2444255570Strasz * XXX: We should limit the number of outstanding R2T PDUs 2445255570Strasz * per task to MaxOutstandingR2T. 2446255570Strasz */ 2447255837Strasz response = cfiscsi_pdu_new_response(request, M_NOWAIT); 2448255837Strasz if (response == NULL) { 2449255837Strasz CFISCSI_SESSION_WARN(cs, "failed to " 2450255837Strasz "allocate memory; dropping connection"); 2451255837Strasz icl_pdu_free(request); 2452255837Strasz cfiscsi_session_terminate(cs); 2453255837Strasz } 2454255570Strasz bhsr2t = (struct iscsi_bhs_r2t *)response->ip_bhs; 2455255570Strasz bhsr2t->bhsr2t_opcode = ISCSI_BHS_OPCODE_R2T; 2456255570Strasz bhsr2t->bhsr2t_flags = 0x80; 2457255570Strasz bhsr2t->bhsr2t_lun = bhssc->bhssc_lun; 2458255570Strasz bhsr2t->bhsr2t_initiator_task_tag = 2459255570Strasz bhssc->bhssc_initiator_task_tag; 2460255570Strasz bhsr2t->bhsr2t_target_transfer_tag = 2461255570Strasz htonl(target_transfer_tag); 2462255570Strasz /* 2463255570Strasz * XXX: Here we assume that cfiscsi_datamove() won't ever 2464255570Strasz * be running concurrently on several CPUs for a given 2465255570Strasz * command. 2466255570Strasz */ 2467255570Strasz bhsr2t->bhsr2t_r2tsn = htonl(PDU_R2TSN(request)); 2468255570Strasz PDU_R2TSN(request)++; 2469255570Strasz /* 2470255570Strasz * This is the offset within the current SCSI command; 2471255570Strasz * i.e. for the first call of datamove(), it will be 0, 2472255570Strasz * and for subsequent ones it will be the sum of lengths 2473255570Strasz * of previous ones. 2474255570Strasz * 2475255570Strasz * The ext_data_filled is to account for unsolicited 2476255570Strasz * (immediate) data that might have already arrived. 2477255570Strasz */ 2478255570Strasz bhsr2t->bhsr2t_buffer_offset = 2479255570Strasz htonl(io->scsiio.kern_rel_offset + io->scsiio.ext_data_filled); 2480255570Strasz /* 2481255570Strasz * This is the total length (sum of S/G lengths) this call 2482255570Strasz * to cfiscsi_datamove() is supposed to handle. 2483255570Strasz * 2484255570Strasz * XXX: Limit it to MaxBurstLength. 2485255570Strasz */ 2486255570Strasz bhsr2t->bhsr2t_desired_data_transfer_length = 2487255570Strasz htonl(io->scsiio.kern_data_len - io->scsiio.ext_data_filled); 2488255570Strasz cfiscsi_pdu_queue(response); 2489255570Strasz } 2490255570Strasz} 2491255570Strasz 2492255570Straszstatic void 2493255570Straszcfiscsi_scsi_command_done(union ctl_io *io) 2494255570Strasz{ 2495255570Strasz struct icl_pdu *request, *response; 2496255570Strasz struct iscsi_bhs_scsi_command *bhssc; 2497255570Strasz struct iscsi_bhs_scsi_response *bhssr; 2498255570Strasz#ifdef DIAGNOSTIC 2499255570Strasz struct cfiscsi_data_wait *cdw; 2500255570Strasz#endif 2501255570Strasz struct cfiscsi_session *cs; 2502255570Strasz uint16_t sense_length; 2503255570Strasz 2504255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2505255570Strasz cs = PDU_SESSION(request); 2506255570Strasz bhssc = (struct iscsi_bhs_scsi_command *)request->ip_bhs; 2507255570Strasz KASSERT((bhssc->bhssc_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2508255570Strasz ISCSI_BHS_OPCODE_SCSI_COMMAND, 2509255570Strasz ("replying to wrong opcode 0x%x", bhssc->bhssc_opcode)); 2510255570Strasz 2511255570Strasz //CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x", 2512255570Strasz // bhssc->bhssc_initiator_task_tag); 2513255570Strasz 2514255570Strasz#ifdef DIAGNOSTIC 2515255570Strasz CFISCSI_SESSION_LOCK(cs); 2516255570Strasz TAILQ_FOREACH(cdw, &cs->cs_waiting_for_data_out, cdw_next) 2517255570Strasz KASSERT(bhssc->bhssc_initiator_task_tag != 2518255570Strasz cdw->cdw_initiator_task_tag, ("dangling cdw")); 2519255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2520255570Strasz#endif 2521255570Strasz 2522255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2523255570Strasz bhssr = (struct iscsi_bhs_scsi_response *)response->ip_bhs; 2524255570Strasz bhssr->bhssr_opcode = ISCSI_BHS_OPCODE_SCSI_RESPONSE; 2525255570Strasz bhssr->bhssr_flags = 0x80; 2526255570Strasz /* 2527255570Strasz * XXX: We don't deal with bidirectional under/overflows; 2528255570Strasz * does anything actually support those? 2529255570Strasz */ 2530255570Strasz if (PDU_TOTAL_TRANSFER_LEN(request) < 2531255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2532255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_UNDERFLOW; 2533255570Strasz bhssr->bhssr_residual_count = 2534255570Strasz htonl(ntohl(bhssc->bhssc_expected_data_transfer_length) - 2535255570Strasz PDU_TOTAL_TRANSFER_LEN(request)); 2536255570Strasz //CFISCSI_SESSION_DEBUG(cs, "underflow; residual count %d", 2537255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2538255570Strasz } else if (PDU_TOTAL_TRANSFER_LEN(request) > 2539255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)) { 2540255570Strasz bhssr->bhssr_flags |= BHSSR_FLAGS_RESIDUAL_OVERFLOW; 2541255570Strasz bhssr->bhssr_residual_count = 2542255570Strasz htonl(PDU_TOTAL_TRANSFER_LEN(request) - 2543255570Strasz ntohl(bhssc->bhssc_expected_data_transfer_length)); 2544255570Strasz //CFISCSI_SESSION_DEBUG(cs, "overflow; residual count %d", 2545255570Strasz // ntohl(bhssr->bhssr_residual_count)); 2546255570Strasz } 2547255570Strasz bhssr->bhssr_response = BHSSR_RESPONSE_COMMAND_COMPLETED; 2548255570Strasz bhssr->bhssr_status = io->scsiio.scsi_status; 2549255570Strasz bhssr->bhssr_initiator_task_tag = bhssc->bhssc_initiator_task_tag; 2550255570Strasz bhssr->bhssr_expdatasn = htonl(PDU_EXPDATASN(request)); 2551255570Strasz 2552255570Strasz if (io->scsiio.sense_len > 0) { 2553255570Strasz#if 0 2554255570Strasz CFISCSI_SESSION_DEBUG(cs, "returning %d bytes of sense data", 2555255570Strasz io->scsiio.sense_len); 2556255570Strasz#endif 2557255570Strasz sense_length = htons(io->scsiio.sense_len); 2558255570Strasz icl_pdu_append_data(response, 2559255570Strasz &sense_length, sizeof(sense_length), M_WAITOK); 2560255570Strasz icl_pdu_append_data(response, 2561255570Strasz &io->scsiio.sense_data, io->scsiio.sense_len, M_WAITOK); 2562255570Strasz } 2563255570Strasz 2564255570Strasz ctl_free_io(io); 2565255570Strasz icl_pdu_free(request); 2566255570Strasz cfiscsi_pdu_queue(response); 2567255570Strasz} 2568255570Strasz 2569255570Straszstatic void 2570255570Straszcfiscsi_task_management_done(union ctl_io *io) 2571255570Strasz{ 2572255570Strasz struct icl_pdu *request, *response; 2573255570Strasz struct iscsi_bhs_task_management_request *bhstmr; 2574255570Strasz struct iscsi_bhs_task_management_response *bhstmr2; 2575255570Strasz struct cfiscsi_data_wait *cdw, *tmpcdw; 2576255570Strasz struct cfiscsi_session *cs; 2577255570Strasz 2578255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2579255570Strasz cs = PDU_SESSION(request); 2580255570Strasz bhstmr = (struct iscsi_bhs_task_management_request *)request->ip_bhs; 2581255570Strasz KASSERT((bhstmr->bhstmr_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) == 2582255570Strasz ISCSI_BHS_OPCODE_TASK_REQUEST, 2583255570Strasz ("replying to wrong opcode 0x%x", bhstmr->bhstmr_opcode)); 2584255570Strasz 2585255570Strasz#if 0 2586255570Strasz CFISCSI_SESSION_DEBUG(cs, "initiator task tag 0x%x; referenced task tag 0x%x", 2587255570Strasz bhstmr->bhstmr_initiator_task_tag, 2588255570Strasz bhstmr->bhstmr_referenced_task_tag); 2589255570Strasz#endif 2590255570Strasz 2591255570Strasz if ((bhstmr->bhstmr_function & ~0x80) == 2592255570Strasz BHSTMR_FUNCTION_ABORT_TASK) { 2593255570Strasz /* 2594255570Strasz * Make sure we no longer wait for Data-Out for this command. 2595255570Strasz */ 2596255570Strasz CFISCSI_SESSION_LOCK(cs); 2597255570Strasz TAILQ_FOREACH_SAFE(cdw, 2598255570Strasz &cs->cs_waiting_for_data_out, cdw_next, tmpcdw) { 2599255570Strasz if (bhstmr->bhstmr_referenced_task_tag != 2600255570Strasz cdw->cdw_initiator_task_tag) 2601255570Strasz continue; 2602255570Strasz 2603255570Strasz#if 0 2604255570Strasz CFISCSI_SESSION_DEBUG(cs, "removing csw for initiator task " 2605255570Strasz "tag 0x%x", bhstmr->bhstmr_initiator_task_tag); 2606255570Strasz#endif 2607255570Strasz TAILQ_REMOVE(&cs->cs_waiting_for_data_out, 2608255570Strasz cdw, cdw_next); 2609255570Strasz cdw->cdw_ctl_io->scsiio.be_move_done(cdw->cdw_ctl_io); 2610255570Strasz uma_zfree(cfiscsi_data_wait_zone, cdw); 2611255570Strasz } 2612255570Strasz CFISCSI_SESSION_UNLOCK(cs); 2613255570Strasz } 2614255570Strasz 2615255570Strasz response = cfiscsi_pdu_new_response(request, M_WAITOK); 2616255570Strasz bhstmr2 = (struct iscsi_bhs_task_management_response *) 2617255570Strasz response->ip_bhs; 2618255570Strasz bhstmr2->bhstmr_opcode = ISCSI_BHS_OPCODE_TASK_RESPONSE; 2619255570Strasz bhstmr2->bhstmr_flags = 0x80; 2620255570Strasz if (io->io_hdr.status == CTL_SUCCESS) { 2621255570Strasz bhstmr2->bhstmr_response = BHSTMR_RESPONSE_FUNCTION_COMPLETE; 2622255570Strasz } else { 2623255570Strasz /* 2624255570Strasz * XXX: How to figure out what exactly went wrong? iSCSI spec 2625255570Strasz * expects us to provide detailed error, e.g. "Task does 2626255570Strasz * not exist" or "LUN does not exist". 2627255570Strasz */ 2628255570Strasz CFISCSI_SESSION_DEBUG(cs, "BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED"); 2629255570Strasz bhstmr2->bhstmr_response = 2630255570Strasz BHSTMR_RESPONSE_FUNCTION_NOT_SUPPORTED; 2631255570Strasz } 2632255570Strasz bhstmr2->bhstmr_initiator_task_tag = bhstmr->bhstmr_initiator_task_tag; 2633255570Strasz 2634255570Strasz ctl_free_io(io); 2635255570Strasz icl_pdu_free(request); 2636255570Strasz cfiscsi_pdu_queue(response); 2637255570Strasz} 2638255570Strasz 2639255570Straszstatic void 2640255570Straszcfiscsi_done(union ctl_io *io) 2641255570Strasz{ 2642255570Strasz struct icl_pdu *request; 2643255570Strasz struct cfiscsi_session *cs; 2644255570Strasz 2645255570Strasz KASSERT(((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE), 2646255570Strasz ("invalid CTL status %#x", io->io_hdr.status)); 2647255570Strasz 2648255570Strasz request = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr; 2649255570Strasz if (request == NULL) { 2650255570Strasz /* 2651255570Strasz * Implicit task termination has just completed; nothing to do. 2652255570Strasz */ 2653255570Strasz return; 2654255570Strasz } 2655255570Strasz 2656255570Strasz cs = PDU_SESSION(request); 2657255570Strasz refcount_release(&cs->cs_outstanding_ctl_pdus); 2658255570Strasz 2659255570Strasz switch (request->ip_bhs->bhs_opcode & ~ISCSI_BHS_OPCODE_IMMEDIATE) { 2660255570Strasz case ISCSI_BHS_OPCODE_SCSI_COMMAND: 2661255570Strasz cfiscsi_scsi_command_done(io); 2662255570Strasz break; 2663255570Strasz case ISCSI_BHS_OPCODE_TASK_REQUEST: 2664255570Strasz cfiscsi_task_management_done(io); 2665255570Strasz break; 2666255570Strasz default: 2667255570Strasz panic("cfiscsi_done called with wrong opcode 0x%x", 2668255570Strasz request->ip_bhs->bhs_opcode); 2669255570Strasz } 2670255570Strasz} 2671