4 * Copyright (c) 2002 Nate Lawson.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * $FreeBSD: src/share/examples/scsi_target/scsi_target.c,v 1.5.2.5 2003/02/18 22:07:10 njl Exp $
29 * $DragonFly: src/share/examples/scsi_target/scsi_target.c,v 1.2 2003/06/17 04:36:57 dillon Exp $
32 #include <sys/types.h>
46 #include <sys/queue.h>
47 #include <sys/event.h>
48 #include <sys/param.h>
49 #include <cam/cam_queue.h>
50 #include <cam/scsi/scsi_all.h>
51 #include <cam/scsi/scsi_targetio.h>
52 #include <cam/scsi/scsi_message.h>
53 #include "scsi_target.h"
55 /* Maximum amount to transfer per CTIO */
56 #define MAX_XFER MAXPHYS
57 /* Maximum number of allocated CTIOs */
59 /* Maximum sector size for emulated volume */
60 #define MAX_SECTOR 32768
62 /* Global variables */
64 u_int32_t volume_size;
73 static struct ccb_queue pending_queue;
74 static struct ccb_queue work_queue;
75 static struct ioc_enable_lun ioc_enlun = {
82 static void cleanup(void);
83 static int init_ccbs(void);
84 static void request_loop(void);
85 static void handle_read(void);
86 /* static int work_atio(struct ccb_accept_tio *); */
87 static void queue_io(struct ccb_scsiio *);
88 static void run_queue(struct ccb_accept_tio *);
89 static int work_inot(struct ccb_immed_notify *);
90 static struct ccb_scsiio *
92 /* static void free_ccb(union ccb *); */
93 static cam_status get_sim_flags(u_int16_t *);
94 static void rel_simq(void);
95 static void abort_all_pending(void);
96 static void usage(void);
99 main(int argc, char *argv[])
102 char *file_name, targname[16];
103 u_int16_t req_flags, sim_flags;
108 req_flags = sim_flags = 0;
110 targ_fd = file_fd = kq_fd = -1;
112 sector_size = SECTOR_SIZE;
115 /* Prepare resource pools */
116 TAILQ_INIT(&pending_queue);
117 TAILQ_INIT(&work_queue);
119 while ((ch = getopt(argc, argv, "AdSTb:c:s:W:")) != -1) {
122 req_flags |= SID_Addr16;
128 req_flags |= SID_Sync;
131 req_flags |= SID_CmdQue;
134 buf_size = atoi(optarg);
135 if (buf_size < 256 || buf_size > MAX_XFER)
136 errx(1, "Unreasonable buf size: %s", optarg);
139 sector_size = atoi(optarg);
140 if (sector_size < 512 || sector_size > MAX_SECTOR)
141 errx(1, "Unreasonable sector size: %s", optarg);
144 user_size = strtoll(optarg, NULL, /*base*/10);
146 errx(1, "Unreasonable volume size: %s", optarg);
149 req_flags &= ~(SID_WBus16 | SID_WBus32);
150 switch (atoi(optarg)) {
152 /* Leave req_flags zeroed */
155 req_flags |= SID_WBus16;
158 req_flags |= SID_WBus32;
161 warnx("Width %s not supported", optarg);
177 sscanf(argv[0], "%u:%u:%u", &ioc_enlun.path_id, &ioc_enlun.target_id,
181 if (ioc_enlun.path_id == CAM_BUS_WILDCARD ||
182 ioc_enlun.target_id == CAM_TARGET_WILDCARD ||
183 ioc_enlun.lun_id == CAM_LUN_WILDCARD) {
184 warnx("Incomplete target path specified");
188 /* We don't support any vendor-specific commands */
189 ioc_enlun.grp6_len = 0;
190 ioc_enlun.grp7_len = 0;
192 /* Open backing store for IO */
193 file_fd = open(file_name, O_RDWR);
195 err(1, "open backing store file");
197 /* Check backing store size or use the size user gave us */
198 if (user_size == 0) {
201 if (fstat(file_fd, &st) < 0)
202 err(1, "fstat file");
203 volume_size = st.st_size / sector_size;
205 volume_size = user_size / sector_size;
207 if (volume_size <= 0)
208 errx(1, "volume must be larger than %d", sector_size);
211 struct aiocb aio, *aiop;
213 /* Make sure we have working AIO support */
214 memset(&aio, 0, sizeof(aio));
215 aio.aio_buf = malloc(sector_size);
216 if (aio.aio_buf == NULL)
218 aio.aio_fildes = file_fd;
220 aio.aio_nbytes = sector_size;
221 signal(SIGSYS, SIG_IGN);
222 if (aio_read(&aio) != 0) {
223 printf("You must enable VFS_AIO in your kernel "
224 "or load the aio(4) module.\n");
227 if (aio_waitcomplete(&aiop, NULL) != sector_size)
228 err(1, "aio_waitcomplete");
229 assert(aiop == &aio);
230 signal(SIGSYS, SIG_DFL);
231 free((void *)aio.aio_buf);
233 warnx("aio support tested ok");
236 /* Go through all the control devices and find one that isn't busy. */
239 snprintf(targname, sizeof(targname), "/dev/targ%d", unit++);
240 targ_fd = open(targname, O_RDWR);
241 } while (targ_fd < 0 && errno == EBUSY);
244 err(1, "Tried to open %d devices, none available", unit);
246 /* The first three are handled by kevent() later */
247 signal(SIGHUP, SIG_IGN);
248 signal(SIGINT, SIG_IGN);
249 signal(SIGTERM, SIG_IGN);
250 signal(SIGPROF, SIG_IGN);
251 signal(SIGALRM, SIG_IGN);
252 signal(SIGSTOP, SIG_IGN);
253 signal(SIGTSTP, SIG_IGN);
255 /* Register a cleanup handler to run when exiting */
258 /* Enable listening on the specified LUN */
259 if (ioctl(targ_fd, TARGIOCENABLE, &ioc_enlun) != 0)
260 err(1, "TARGIOCENABLE");
262 /* Enable debugging if requested */
264 if (ioctl(targ_fd, TARGIOCDEBUG, &debug) != 0)
265 err(1, "TARGIOCDEBUG");
268 /* Set up inquiry data according to what SIM supports */
269 if (get_sim_flags(&sim_flags) != CAM_REQ_CMP)
270 errx(1, "get_sim_flags");
271 if (tcmd_init(req_flags, sim_flags) != 0)
272 errx(1, "Initializing tcmd subsystem failed");
274 /* Queue ATIOs and INOTs on descriptor */
275 if (init_ccbs() != 0)
276 errx(1, "init_ccbs failed");
279 warnx("main loop beginning");
288 struct ccb_hdr *ccb_h;
291 warnx("cleanup called");
293 ioctl(targ_fd, TARGIOCDEBUG, &debug);
295 ioctl(targ_fd, TARGIOCDISABLE, NULL);
298 while ((ccb_h = TAILQ_FIRST(&pending_queue)) != NULL) {
299 TAILQ_REMOVE(&pending_queue, ccb_h, periph_links.tqe);
300 free_ccb((union ccb *)ccb_h);
302 while ((ccb_h = TAILQ_FIRST(&work_queue)) != NULL) {
303 TAILQ_REMOVE(&work_queue, ccb_h, periph_links.tqe);
304 free_ccb((union ccb *)ccb_h);
311 /* Allocate ATIOs/INOTs and queue on HBA */
317 for (i = 0; i < MAX_INITIATORS; i++) {
318 struct ccb_accept_tio *atio;
319 struct atio_descr *a_descr;
320 struct ccb_immed_notify *inot;
322 atio = (struct ccb_accept_tio *)malloc(sizeof(*atio));
327 a_descr = (struct atio_descr *)malloc(sizeof(*a_descr));
328 if (a_descr == NULL) {
330 warn("malloc atio_descr");
333 atio->ccb_h.func_code = XPT_ACCEPT_TARGET_IO;
334 atio->ccb_h.targ_descr = a_descr;
335 send_ccb((union ccb *)atio, /*priority*/1);
337 inot = (struct ccb_immed_notify *)malloc(sizeof(*inot));
342 inot->ccb_h.func_code = XPT_IMMED_NOTIFY;
343 send_ccb((union ccb *)inot, /*priority*/1);
352 struct kevent events[MAX_EVENTS];
353 struct timespec ts, *tptr;
356 /* Register kqueue for event notification */
357 if ((kq_fd = kqueue()) < 0)
358 err(1, "init kqueue");
360 /* Set up some default events */
361 EV_SET(&events[0], SIGHUP, EVFILT_SIGNAL, EV_ADD|EV_ENABLE, 0, 0, 0);
362 EV_SET(&events[1], SIGINT, EVFILT_SIGNAL, EV_ADD|EV_ENABLE, 0, 0, 0);
363 EV_SET(&events[2], SIGTERM, EVFILT_SIGNAL, EV_ADD|EV_ENABLE, 0, 0, 0);
364 EV_SET(&events[3], targ_fd, EVFILT_READ, EV_ADD|EV_ENABLE, 0, 0, 0);
365 if (kevent(kq_fd, events, 4, NULL, 0, NULL) < 0)
366 err(1, "kevent signal registration");
373 /* Loop until user signal */
376 struct ccb_hdr *ccb_h;
378 /* Check for the next signal, read ready, or AIO completion */
379 retval = kevent(kq_fd, NULL, 0, events, MAX_EVENTS, tptr);
381 if (errno == EINTR) {
383 warnx("EINTR, looping");
387 err(1, "kevent failed");
389 } else if (retval > MAX_EVENTS) {
390 errx(1, "kevent returned more events than allocated?");
393 /* Process all received events. */
394 for (i = 0; i < retval; i++) {
395 if ((events[i].flags & EV_ERROR) != 0)
396 errx(1, "kevent registration failed");
398 switch (events[i].filter) {
406 struct ccb_scsiio *ctio;
407 struct ctio_descr *c_descr;
411 ctio = (struct ccb_scsiio *)events[i].udata;
412 c_descr = (struct ctio_descr *)
413 ctio->ccb_h.targ_descr;
414 c_descr->event = AIO_DONE;
415 /* Queue on the appropriate ATIO */
417 /* Process any queued completions. */
418 run_queue(c_descr->atio);
423 warnx("signal ready, setting quit");
427 warnx("unknown event %#x", events[i].filter);
435 /* Grab the first CCB and perform one work unit. */
436 if ((ccb_h = TAILQ_FIRST(&work_queue)) != NULL) {
439 ccb = (union ccb *)ccb_h;
440 switch (ccb_h->func_code) {
441 case XPT_ACCEPT_TARGET_IO:
442 /* Start one more transfer. */
443 retval = work_atio(&ccb->atio);
445 case XPT_IMMED_NOTIFY:
446 retval = work_inot(&ccb->cin);
449 warnx("Unhandled ccb type %#x on workq",
455 /* Assume work function handled the exception */
456 if ((ccb_h->status & CAM_DEV_QFRZN) != 0) {
458 warnx("Queue frozen receiving CCB, "
464 /* No more work needed for this command. */
466 TAILQ_REMOVE(&work_queue, ccb_h,
472 * Poll for new events (i.e. completions) while we
473 * are processing CCBs on the work_queue. Once it's
474 * empty, use an infinite wait.
476 if (!TAILQ_EMPTY(&work_queue))
483 /* CCBs are ready from the kernel */
487 union ccb *ccb_array[MAX_INITIATORS], *ccb;
490 ccb_count = read(targ_fd, ccb_array, sizeof(ccb_array));
491 if (ccb_count <= 0) {
492 warn("read ccb ptrs");
495 ccb_count /= sizeof(union ccb *);
497 warnx("truncated read ccb ptr?");
501 for (i = 0; i < ccb_count; i++) {
503 TAILQ_REMOVE(&pending_queue, &ccb->ccb_h, periph_links.tqe);
505 switch (ccb->ccb_h.func_code) {
506 case XPT_ACCEPT_TARGET_IO:
508 struct ccb_accept_tio *atio;
509 struct atio_descr *a_descr;
511 /* Initialize ATIO descr for this transaction */
513 a_descr = (struct atio_descr *)atio->ccb_h.targ_descr;
514 bzero(a_descr, sizeof(*a_descr));
515 TAILQ_INIT(&a_descr->cmplt_io);
516 a_descr->flags = atio->ccb_h.flags &
517 (CAM_DIS_DISCONNECT | CAM_TAG_ACTION_VALID);
518 /* XXX add a_descr->priority */
519 if ((atio->ccb_h.flags & CAM_CDB_POINTER) == 0)
520 a_descr->cdb = atio->cdb_io.cdb_bytes;
522 a_descr->cdb = atio->cdb_io.cdb_ptr;
524 /* ATIOs are processed in FIFO order */
525 TAILQ_INSERT_TAIL(&work_queue, &ccb->ccb_h,
529 case XPT_CONT_TARGET_IO:
531 struct ccb_scsiio *ctio;
532 struct ctio_descr *c_descr;
535 c_descr = (struct ctio_descr *)ctio->ccb_h.targ_descr;
536 c_descr->event = CTIO_DONE;
537 /* Queue on the appropriate ATIO */
539 /* Process any queued completions. */
540 run_queue(c_descr->atio);
543 case XPT_IMMED_NOTIFY:
544 /* INOTs are handled with priority */
545 TAILQ_INSERT_HEAD(&work_queue, &ccb->ccb_h,
549 warnx("Unhandled ccb type %#x in handle_read",
550 ccb->ccb_h.func_code);
556 /* Process an ATIO CCB from the kernel */
558 work_atio(struct ccb_accept_tio *atio)
560 struct ccb_scsiio *ctio;
561 struct atio_descr *a_descr;
562 struct ctio_descr *c_descr;
567 warnx("Working on ATIO %p", atio);
569 a_descr = (struct atio_descr *)atio->ccb_h.targ_descr;
571 /* Get a CTIO and initialize it according to our known parameters */
576 ctio->ccb_h.flags = a_descr->flags;
577 ctio->tag_id = atio->tag_id;
578 ctio->init_id = atio->init_id;
579 /* XXX priority needs to be added to a_descr */
580 c_descr = (struct ctio_descr *)ctio->ccb_h.targ_descr;
581 c_descr->atio = atio;
582 if ((a_descr->flags & CAM_DIR_IN) != 0)
583 c_descr->offset = a_descr->base_off + a_descr->targ_req;
584 else if ((a_descr->flags & CAM_DIR_MASK) == CAM_DIR_OUT)
585 c_descr->offset = a_descr->base_off + a_descr->init_req;
588 * Return a check condition if there was an error while
589 * receiving this ATIO.
591 if (atio->sense_len != 0) {
592 struct scsi_sense_data *sense;
595 warnx("ATIO with %u bytes sense received",
598 sense = &atio->sense_data;
599 tcmd_sense(ctio->init_id, ctio, sense->flags,
600 sense->add_sense_code, sense->add_sense_code_qual);
601 send_ccb((union ccb *)ctio, /*priority*/1);
605 status = atio->ccb_h.status & CAM_STATUS_MASK;
608 ret = tcmd_handle(atio, ctio, ATIO_WORK);
610 case CAM_REQ_ABORTED:
612 TAILQ_REMOVE(&work_queue, &atio->ccb_h, periph_links.tqe);
613 send_ccb((union ccb *)atio, /*priority*/1);
617 warnx("ATIO completed with unhandled status %#x", status);
627 queue_io(struct ccb_scsiio *ctio)
629 struct ccb_hdr *ccb_h;
630 struct io_queue *ioq;
631 struct ctio_descr *c_descr, *curr_descr;
633 c_descr = (struct ctio_descr *)ctio->ccb_h.targ_descr;
634 /* If the completion is for a specific ATIO, queue in order */
635 if (c_descr->atio != NULL) {
636 struct atio_descr *a_descr;
638 a_descr = (struct atio_descr *)c_descr->atio->ccb_h.targ_descr;
639 ioq = &a_descr->cmplt_io;
641 errx(1, "CTIO %p has NULL ATIO", ctio);
644 /* Insert in order, sorted by offset */
645 if (!TAILQ_EMPTY(ioq)) {
646 TAILQ_FOREACH_REVERSE(ccb_h, ioq, io_queue, periph_links.tqe) {
647 curr_descr = (struct ctio_descr *)ccb_h->targ_descr;
648 if (curr_descr->offset <= c_descr->offset) {
649 TAILQ_INSERT_AFTER(ioq, ccb_h, &ctio->ccb_h,
653 if (TAILQ_PREV(ccb_h, io_queue, periph_links.tqe)
655 TAILQ_INSERT_BEFORE(ccb_h, &ctio->ccb_h,
661 TAILQ_INSERT_HEAD(ioq, &ctio->ccb_h, periph_links.tqe);
666 * Go through all completed AIO/CTIOs for a given ATIO and advance data
667 * counts, start continuation IO, etc.
670 run_queue(struct ccb_accept_tio *atio)
672 struct atio_descr *a_descr;
673 struct ccb_hdr *ccb_h;
674 int sent_status, event;
679 a_descr = (struct atio_descr *)atio->ccb_h.targ_descr;
681 while ((ccb_h = TAILQ_FIRST(&a_descr->cmplt_io)) != NULL) {
682 struct ccb_scsiio *ctio;
683 struct ctio_descr *c_descr;
685 ctio = (struct ccb_scsiio *)ccb_h;
686 c_descr = (struct ctio_descr *)ctio->ccb_h.targ_descr;
688 /* If completed item is in range, call handler */
689 if ((c_descr->event == AIO_DONE &&
690 c_descr->offset == a_descr->base_off + a_descr->targ_ack)
691 || (c_descr->event == CTIO_DONE &&
692 c_descr->offset == a_descr->base_off + a_descr->init_ack)) {
693 sent_status = (ccb_h->flags & CAM_SEND_STATUS) != 0;
694 event = c_descr->event;
696 TAILQ_REMOVE(&a_descr->cmplt_io, ccb_h,
698 tcmd_handle(atio, ctio, c_descr->event);
700 /* If entire transfer complete, send back ATIO */
701 if (sent_status != 0 && event == CTIO_DONE)
702 send_ccb((union ccb *)atio, /*priority*/1);
704 /* Gap in offsets so wait until later callback */
706 warnx("IO %p out of order", ccb_h);
713 work_inot(struct ccb_immed_notify *inot)
719 warnx("Working on INOT %p", inot);
721 status = inot->ccb_h.status;
722 sense = (status & CAM_AUTOSNS_VALID) != 0;
723 status &= CAM_STATUS_MASK;
726 case CAM_SCSI_BUS_RESET:
727 tcmd_ua(CAM_TARGET_WILDCARD, UA_BUS_RESET);
731 tcmd_ua(CAM_TARGET_WILDCARD, UA_BDR);
734 case CAM_MESSAGE_RECV:
735 switch (inot->message_args[0]) {
736 case MSG_TASK_COMPLETE:
737 case MSG_INITIATOR_DET_ERR:
738 case MSG_ABORT_TASK_SET:
739 case MSG_MESSAGE_REJECT:
741 case MSG_PARITY_ERROR:
742 case MSG_TARGET_RESET:
744 case MSG_CLEAR_TASK_SET:
746 warnx("INOT message %#x", inot->message_args[0]);
750 case CAM_REQ_ABORTED:
751 warnx("INOT %p aborted", inot);
754 warnx("Unhandled INOT status %#x", status);
758 /* If there is sense data, use it */
760 struct scsi_sense_data *sense;
762 sense = &inot->sense_data;
763 tcmd_sense(inot->initiator_id, NULL, sense->flags,
764 sense->add_sense_code, sense->add_sense_code_qual);
766 warnx("INOT has sense: %#x", sense->flags);
770 TAILQ_REMOVE(&work_queue, &inot->ccb_h, periph_links.tqe);
771 send_ccb((union ccb *)inot, /*priority*/1);
777 send_ccb(union ccb *ccb, int priority)
780 warnx("sending ccb (%#x)", ccb->ccb_h.func_code);
781 ccb->ccb_h.pinfo.priority = priority;
782 if (XPT_FC_IS_QUEUED(ccb)) {
783 TAILQ_INSERT_TAIL(&pending_queue, &ccb->ccb_h,
786 if (write(targ_fd, &ccb, sizeof(ccb)) != sizeof(ccb)) {
788 ccb->ccb_h.status = CAM_PROVIDE_FAIL;
792 /* Return a CTIO/descr/buf combo from the freelist or malloc one */
793 static struct ccb_scsiio *
796 struct ccb_scsiio *ctio;
797 struct ctio_descr *c_descr;
800 if (num_ctios == MAX_CTIOS)
803 ctio = (struct ccb_scsiio *)malloc(sizeof(*ctio));
808 c_descr = (struct ctio_descr *)malloc(sizeof(*c_descr));
809 if (c_descr == NULL) {
811 warn("malloc ctio_descr");
814 c_descr->buf = malloc(buf_size);
815 if (c_descr->buf == NULL) {
818 warn("malloc backing store");
823 /* Initialize CTIO, CTIO descr, and AIO */
824 ctio->ccb_h.func_code = XPT_CONT_TARGET_IO;
825 ctio->ccb_h.retry_count = 2;
826 ctio->ccb_h.timeout = CAM_TIME_INFINITY;
827 ctio->data_ptr = c_descr->buf;
828 ctio->ccb_h.targ_descr = c_descr;
829 c_descr->aiocb.aio_buf = c_descr->buf;
830 c_descr->aiocb.aio_fildes = file_fd;
831 se = &c_descr->aiocb.aio_sigevent;
832 se->sigev_notify = SIGEV_KEVENT;
833 se->sigev_notify_kqueue = kq_fd;
834 se->sigev_value.sival_ptr = ctio;
840 free_ccb(union ccb *ccb)
842 switch (ccb->ccb_h.func_code) {
843 case XPT_CONT_TARGET_IO:
845 struct ctio_descr *c_descr;
847 c_descr = (struct ctio_descr *)ccb->ccb_h.targ_descr;
852 case XPT_ACCEPT_TARGET_IO:
853 free(ccb->ccb_h.targ_descr);
855 case XPT_IMMED_NOTIFY:
863 get_sim_flags(u_int16_t *flags)
865 struct ccb_pathinq cpi;
868 /* Find SIM capabilities */
869 bzero(&cpi, sizeof(cpi));
870 cpi.ccb_h.func_code = XPT_PATH_INQ;
871 send_ccb((union ccb *)&cpi, /*priority*/1);
872 status = cpi.ccb_h.status & CAM_STATUS_MASK;
873 if (status != CAM_REQ_CMP) {
874 fprintf(stderr, "CPI failed, status %#x\n", status);
878 /* Can only enable on controllers that support target mode */
879 if ((cpi.target_sprt & PIT_PROCESSOR) == 0) {
880 fprintf(stderr, "HBA does not support target mode\n");
881 status = CAM_PATH_INVALID;
885 *flags = cpi.hba_inquiry;
892 struct ccb_relsim crs;
894 bzero(&crs, sizeof(crs));
895 crs.ccb_h.func_code = XPT_REL_SIMQ;
896 crs.release_flags = RELSIM_RELEASE_AFTER_QEMPTY;
898 crs.release_timeout = 0;
900 send_ccb((union ccb *)&crs, /*priority*/0);
903 /* Cancel all pending CCBs. */
907 struct ccb_abort cab;
908 struct ccb_hdr *ccb_h;
911 warnx("abort_all_pending");
913 bzero(&cab, sizeof(cab));
914 cab.ccb_h.func_code = XPT_ABORT;
915 TAILQ_FOREACH(ccb_h, &pending_queue, periph_links.tqe) {
917 warnx("Aborting pending CCB %p\n", ccb_h);
918 cab.abort_ccb = (union ccb *)ccb_h;
919 send_ccb((union ccb *)&cab, /*priority*/1);
920 if (cab.ccb_h.status != CAM_REQ_CMP) {
921 warnx("Unable to abort CCB, status %#x\n",
931 "Usage: scsi_target [-AdST] [-b bufsize] [-c sectorsize]\n"
932 "\t\t[-r numbufs] [-s volsize] [-W 8,16,32]\n"
933 "\t\tbus:target:lun filename\n");