ctl_backend_block.c revision 287664
1229997Sken/*- 2229997Sken * Copyright (c) 2003 Silicon Graphics International Corp. 3229997Sken * Copyright (c) 2009-2011 Spectra Logic Corporation 4232604Strasz * Copyright (c) 2012 The FreeBSD Foundation 5229997Sken * All rights reserved. 6229997Sken * 7232604Strasz * Portions of this software were developed by Edward Tomasz Napierala 8232604Strasz * under sponsorship from the FreeBSD Foundation. 9232604Strasz * 10229997Sken * Redistribution and use in source and binary forms, with or without 11229997Sken * modification, are permitted provided that the following conditions 12229997Sken * are met: 13229997Sken * 1. Redistributions of source code must retain the above copyright 14229997Sken * notice, this list of conditions, and the following disclaimer, 15229997Sken * without modification. 16229997Sken * 2. Redistributions in binary form must reproduce at minimum a disclaimer 17229997Sken * substantially similar to the "NO WARRANTY" disclaimer below 18229997Sken * ("Disclaimer") and any redistribution must be conditioned upon 19229997Sken * including a substantially similar Disclaimer requirement for further 20229997Sken * binary redistribution. 21229997Sken * 22229997Sken * NO WARRANTY 23229997Sken * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 24229997Sken * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 25229997Sken * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR 26229997Sken * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 27229997Sken * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28229997Sken * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29229997Sken * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30229997Sken * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 31229997Sken * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 32229997Sken * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 33229997Sken * POSSIBILITY OF SUCH DAMAGES. 34229997Sken * 35229997Sken * $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_backend_block.c#5 $ 36229997Sken */ 37229997Sken/* 38229997Sken * CAM Target Layer driver backend for block devices. 39229997Sken * 40229997Sken * Author: Ken Merry <ken@FreeBSD.org> 41229997Sken */ 42229997Sken#include <sys/cdefs.h> 43229997Sken__FBSDID("$FreeBSD: head/sys/cam/ctl/ctl_backend_block.c 287664 2015-09-11 12:50:52Z mav $"); 44229997Sken 45229997Sken#include <sys/param.h> 46229997Sken#include <sys/systm.h> 47229997Sken#include <sys/kernel.h> 48229997Sken#include <sys/types.h> 49229997Sken#include <sys/kthread.h> 50229997Sken#include <sys/bio.h> 51229997Sken#include <sys/fcntl.h> 52264274Smav#include <sys/limits.h> 53229997Sken#include <sys/lock.h> 54229997Sken#include <sys/mutex.h> 55229997Sken#include <sys/condvar.h> 56229997Sken#include <sys/malloc.h> 57229997Sken#include <sys/conf.h> 58229997Sken#include <sys/ioccom.h> 59229997Sken#include <sys/queue.h> 60229997Sken#include <sys/sbuf.h> 61229997Sken#include <sys/endian.h> 62229997Sken#include <sys/uio.h> 63229997Sken#include <sys/buf.h> 64229997Sken#include <sys/taskqueue.h> 65229997Sken#include <sys/vnode.h> 66229997Sken#include <sys/namei.h> 67229997Sken#include <sys/mount.h> 68229997Sken#include <sys/disk.h> 69229997Sken#include <sys/fcntl.h> 70229997Sken#include <sys/filedesc.h> 71275474Smav#include <sys/filio.h> 72229997Sken#include <sys/proc.h> 73229997Sken#include <sys/pcpu.h> 74229997Sken#include <sys/module.h> 75229997Sken#include <sys/sdt.h> 76229997Sken#include <sys/devicestat.h> 77229997Sken#include <sys/sysctl.h> 78229997Sken 79229997Sken#include <geom/geom.h> 80229997Sken 81229997Sken#include <cam/cam.h> 82229997Sken#include <cam/scsi/scsi_all.h> 83229997Sken#include <cam/scsi/scsi_da.h> 84229997Sken#include <cam/ctl/ctl_io.h> 85229997Sken#include <cam/ctl/ctl.h> 86229997Sken#include <cam/ctl/ctl_backend.h> 87229997Sken#include <cam/ctl/ctl_ioctl.h> 88287621Smav#include <cam/ctl/ctl_ha.h> 89229997Sken#include <cam/ctl/ctl_scsi_all.h> 90287621Smav#include <cam/ctl/ctl_private.h> 91229997Sken#include <cam/ctl/ctl_error.h> 92229997Sken 93229997Sken/* 94264886Smav * The idea here is that we'll allocate enough S/G space to hold a 1MB 95264886Smav * I/O. If we get an I/O larger than that, we'll split it. 96229997Sken */ 97267537Smav#define CTLBLK_HALF_IO_SIZE (512 * 1024) 98267537Smav#define CTLBLK_MAX_IO_SIZE (CTLBLK_HALF_IO_SIZE * 2) 99264886Smav#define CTLBLK_MAX_SEG MAXPHYS 100267537Smav#define CTLBLK_HALF_SEGS MAX(CTLBLK_HALF_IO_SIZE / CTLBLK_MAX_SEG, 1) 101267537Smav#define CTLBLK_MAX_SEGS (CTLBLK_HALF_SEGS * 2) 102229997Sken 103229997Sken#ifdef CTLBLK_DEBUG 104229997Sken#define DPRINTF(fmt, args...) \ 105229997Sken printf("cbb(%s:%d): " fmt, __FUNCTION__, __LINE__, ##args) 106229997Sken#else 107229997Sken#define DPRINTF(fmt, args...) do {} while(0) 108229997Sken#endif 109229997Sken 110267519Smav#define PRIV(io) \ 111267519Smav ((struct ctl_ptr_len_flags *)&(io)->io_hdr.ctl_private[CTL_PRIV_BACKEND]) 112267537Smav#define ARGS(io) \ 113267537Smav ((struct ctl_lba_len_flags *)&(io)->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]) 114267519Smav 115229997SkenSDT_PROVIDER_DEFINE(cbb); 116229997Sken 117229997Skentypedef enum { 118229997Sken CTL_BE_BLOCK_LUN_UNCONFIGURED = 0x01, 119229997Sken CTL_BE_BLOCK_LUN_CONFIG_ERR = 0x02, 120229997Sken CTL_BE_BLOCK_LUN_WAITING = 0x04, 121229997Sken} ctl_be_block_lun_flags; 122229997Sken 123229997Skentypedef enum { 124229997Sken CTL_BE_BLOCK_NONE, 125229997Sken CTL_BE_BLOCK_DEV, 126229997Sken CTL_BE_BLOCK_FILE 127229997Sken} ctl_be_block_type; 128229997Sken 129229997Skenstruct ctl_be_block_filedata { 130229997Sken struct ucred *cred; 131229997Sken}; 132229997Sken 133229997Skenunion ctl_be_block_bedata { 134229997Sken struct ctl_be_block_filedata file; 135229997Sken}; 136229997Sken 137229997Skenstruct ctl_be_block_io; 138229997Skenstruct ctl_be_block_lun; 139229997Sken 140229997Skentypedef void (*cbb_dispatch_t)(struct ctl_be_block_lun *be_lun, 141229997Sken struct ctl_be_block_io *beio); 142274154Smavtypedef uint64_t (*cbb_getattr_t)(struct ctl_be_block_lun *be_lun, 143274154Smav const char *attrname); 144229997Sken 145229997Sken/* 146229997Sken * Backend LUN structure. There is a 1:1 mapping between a block device 147229997Sken * and a backend block LUN, and between a backend block LUN and a CTL LUN. 148229997Sken */ 149229997Skenstruct ctl_be_block_lun { 150272911Smav struct ctl_lun_create_params params; 151229997Sken char lunname[32]; 152229997Sken char *dev_path; 153229997Sken ctl_be_block_type dev_type; 154229997Sken struct vnode *vn; 155229997Sken union ctl_be_block_bedata backend; 156229997Sken cbb_dispatch_t dispatch; 157229997Sken cbb_dispatch_t lun_flush; 158264274Smav cbb_dispatch_t unmap; 159275474Smav cbb_dispatch_t get_lba_status; 160274154Smav cbb_getattr_t getattr; 161229997Sken uma_zone_t lun_zone; 162229997Sken uint64_t size_blocks; 163229997Sken uint64_t size_bytes; 164229997Sken struct ctl_be_block_softc *softc; 165229997Sken struct devstat *disk_stats; 166229997Sken ctl_be_block_lun_flags flags; 167229997Sken STAILQ_ENTRY(ctl_be_block_lun) links; 168287499Smav struct ctl_be_lun cbe_lun; 169229997Sken struct taskqueue *io_taskqueue; 170229997Sken struct task io_task; 171229997Sken int num_threads; 172229997Sken STAILQ_HEAD(, ctl_io_hdr) input_queue; 173275474Smav STAILQ_HEAD(, ctl_io_hdr) config_read_queue; 174229997Sken STAILQ_HEAD(, ctl_io_hdr) config_write_queue; 175229997Sken STAILQ_HEAD(, ctl_io_hdr) datamove_queue; 176267877Smav struct mtx_padalign io_lock; 177267877Smav struct mtx_padalign queue_lock; 178229997Sken}; 179229997Sken 180229997Sken/* 181229997Sken * Overall softc structure for the block backend module. 182229997Sken */ 183229997Skenstruct ctl_be_block_softc { 184229997Sken struct mtx lock; 185229997Sken int num_luns; 186229997Sken STAILQ_HEAD(, ctl_be_block_lun) lun_list; 187229997Sken}; 188229997Sken 189229997Skenstatic struct ctl_be_block_softc backend_block_softc; 190229997Sken 191229997Sken/* 192229997Sken * Per-I/O information. 193229997Sken */ 194229997Skenstruct ctl_be_block_io { 195229997Sken union ctl_io *io; 196229997Sken struct ctl_sg_entry sg_segs[CTLBLK_MAX_SEGS]; 197229997Sken struct iovec xiovecs[CTLBLK_MAX_SEGS]; 198229997Sken int bio_cmd; 199229997Sken int num_segs; 200229997Sken int num_bios_sent; 201229997Sken int num_bios_done; 202229997Sken int send_complete; 203229997Sken int num_errors; 204229997Sken struct bintime ds_t0; 205229997Sken devstat_tag_type ds_tag_type; 206229997Sken devstat_trans_flags ds_trans_type; 207229997Sken uint64_t io_len; 208229997Sken uint64_t io_offset; 209286353Smav int io_arg; 210229997Sken struct ctl_be_block_softc *softc; 211229997Sken struct ctl_be_block_lun *lun; 212264274Smav void (*beio_cont)(struct ctl_be_block_io *beio); /* to continue processing */ 213229997Sken}; 214229997Sken 215287621Smavextern struct ctl_softc *control_softc; 216287621Smav 217229997Skenstatic int cbb_num_threads = 14; 218229997SkenSYSCTL_NODE(_kern_cam_ctl, OID_AUTO, block, CTLFLAG_RD, 0, 219229997Sken "CAM Target Layer Block Backend"); 220267992ShselaskySYSCTL_INT(_kern_cam_ctl_block, OID_AUTO, num_threads, CTLFLAG_RWTUN, 221229997Sken &cbb_num_threads, 0, "Number of threads per backing file"); 222229997Sken 223229997Skenstatic struct ctl_be_block_io *ctl_alloc_beio(struct ctl_be_block_softc *softc); 224229997Skenstatic void ctl_free_beio(struct ctl_be_block_io *beio); 225229997Skenstatic void ctl_complete_beio(struct ctl_be_block_io *beio); 226229997Skenstatic int ctl_be_block_move_done(union ctl_io *io); 227229997Skenstatic void ctl_be_block_biodone(struct bio *bio); 228229997Skenstatic void ctl_be_block_flush_file(struct ctl_be_block_lun *be_lun, 229229997Sken struct ctl_be_block_io *beio); 230229997Skenstatic void ctl_be_block_dispatch_file(struct ctl_be_block_lun *be_lun, 231229997Sken struct ctl_be_block_io *beio); 232275474Smavstatic void ctl_be_block_gls_file(struct ctl_be_block_lun *be_lun, 233275474Smav struct ctl_be_block_io *beio); 234275481Smavstatic uint64_t ctl_be_block_getattr_file(struct ctl_be_block_lun *be_lun, 235275481Smav const char *attrname); 236229997Skenstatic void ctl_be_block_flush_dev(struct ctl_be_block_lun *be_lun, 237229997Sken struct ctl_be_block_io *beio); 238264274Smavstatic void ctl_be_block_unmap_dev(struct ctl_be_block_lun *be_lun, 239264274Smav struct ctl_be_block_io *beio); 240229997Skenstatic void ctl_be_block_dispatch_dev(struct ctl_be_block_lun *be_lun, 241229997Sken struct ctl_be_block_io *beio); 242274154Smavstatic uint64_t ctl_be_block_getattr_dev(struct ctl_be_block_lun *be_lun, 243274154Smav const char *attrname); 244275474Smavstatic void ctl_be_block_cr_dispatch(struct ctl_be_block_lun *be_lun, 245275474Smav union ctl_io *io); 246229997Skenstatic void ctl_be_block_cw_dispatch(struct ctl_be_block_lun *be_lun, 247229997Sken union ctl_io *io); 248229997Skenstatic void ctl_be_block_dispatch(struct ctl_be_block_lun *be_lun, 249229997Sken union ctl_io *io); 250229997Skenstatic void ctl_be_block_worker(void *context, int pending); 251229997Skenstatic int ctl_be_block_submit(union ctl_io *io); 252229997Skenstatic int ctl_be_block_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, 253229997Sken int flag, struct thread *td); 254229997Skenstatic int ctl_be_block_open_file(struct ctl_be_block_lun *be_lun, 255229997Sken struct ctl_lun_req *req); 256229997Skenstatic int ctl_be_block_open_dev(struct ctl_be_block_lun *be_lun, 257229997Sken struct ctl_lun_req *req); 258229997Skenstatic int ctl_be_block_close(struct ctl_be_block_lun *be_lun); 259229997Skenstatic int ctl_be_block_open(struct ctl_be_block_softc *softc, 260229997Sken struct ctl_be_block_lun *be_lun, 261229997Sken struct ctl_lun_req *req); 262229997Skenstatic int ctl_be_block_create(struct ctl_be_block_softc *softc, 263229997Sken struct ctl_lun_req *req); 264229997Skenstatic int ctl_be_block_rm(struct ctl_be_block_softc *softc, 265229997Sken struct ctl_lun_req *req); 266232604Straszstatic int ctl_be_block_modify_file(struct ctl_be_block_lun *be_lun, 267232604Strasz struct ctl_lun_req *req); 268232604Straszstatic int ctl_be_block_modify_dev(struct ctl_be_block_lun *be_lun, 269232604Strasz struct ctl_lun_req *req); 270232604Straszstatic int ctl_be_block_modify(struct ctl_be_block_softc *softc, 271232604Strasz struct ctl_lun_req *req); 272229997Skenstatic void ctl_be_block_lun_shutdown(void *be_lun); 273229997Skenstatic void ctl_be_block_lun_config_status(void *be_lun, 274229997Sken ctl_lun_config_status status); 275229997Skenstatic int ctl_be_block_config_write(union ctl_io *io); 276229997Skenstatic int ctl_be_block_config_read(union ctl_io *io); 277229997Skenstatic int ctl_be_block_lun_info(void *be_lun, struct sbuf *sb); 278274154Smavstatic uint64_t ctl_be_block_lun_attr(void *be_lun, const char *attrname); 279229997Skenint ctl_be_block_init(void); 280229997Sken 281229997Skenstatic struct ctl_backend_driver ctl_be_block_driver = 282229997Sken{ 283230334Sken .name = "block", 284230334Sken .flags = CTL_BE_FLAG_HAS_CONFIG, 285230334Sken .init = ctl_be_block_init, 286230334Sken .data_submit = ctl_be_block_submit, 287230334Sken .data_move_done = ctl_be_block_move_done, 288230334Sken .config_read = ctl_be_block_config_read, 289230334Sken .config_write = ctl_be_block_config_write, 290230334Sken .ioctl = ctl_be_block_ioctl, 291274154Smav .lun_info = ctl_be_block_lun_info, 292274154Smav .lun_attr = ctl_be_block_lun_attr 293229997Sken}; 294229997Sken 295229997SkenMALLOC_DEFINE(M_CTLBLK, "ctlblk", "Memory used for CTL block backend"); 296229997SkenCTL_BACKEND_DECLARE(cbb, ctl_be_block_driver); 297229997Sken 298264020Straszstatic uma_zone_t beio_zone; 299264020Strasz 300229997Skenstatic struct ctl_be_block_io * 301229997Skenctl_alloc_beio(struct ctl_be_block_softc *softc) 302229997Sken{ 303229997Sken struct ctl_be_block_io *beio; 304229997Sken 305264020Strasz beio = uma_zalloc(beio_zone, M_WAITOK | M_ZERO); 306264020Strasz beio->softc = softc; 307229997Sken return (beio); 308229997Sken} 309229997Sken 310229997Skenstatic void 311229997Skenctl_free_beio(struct ctl_be_block_io *beio) 312229997Sken{ 313229997Sken int duplicate_free; 314229997Sken int i; 315229997Sken 316229997Sken duplicate_free = 0; 317229997Sken 318229997Sken for (i = 0; i < beio->num_segs; i++) { 319229997Sken if (beio->sg_segs[i].addr == NULL) 320229997Sken duplicate_free++; 321229997Sken 322229997Sken uma_zfree(beio->lun->lun_zone, beio->sg_segs[i].addr); 323229997Sken beio->sg_segs[i].addr = NULL; 324267537Smav 325267537Smav /* For compare we had two equal S/G lists. */ 326267537Smav if (ARGS(beio->io)->flags & CTL_LLF_COMPARE) { 327267537Smav uma_zfree(beio->lun->lun_zone, 328267537Smav beio->sg_segs[i + CTLBLK_HALF_SEGS].addr); 329267537Smav beio->sg_segs[i + CTLBLK_HALF_SEGS].addr = NULL; 330267537Smav } 331229997Sken } 332229997Sken 333229997Sken if (duplicate_free > 0) { 334229997Sken printf("%s: %d duplicate frees out of %d segments\n", __func__, 335229997Sken duplicate_free, beio->num_segs); 336229997Sken } 337229997Sken 338264020Strasz uma_zfree(beio_zone, beio); 339229997Sken} 340229997Sken 341229997Skenstatic void 342229997Skenctl_complete_beio(struct ctl_be_block_io *beio) 343229997Sken{ 344267877Smav union ctl_io *io = beio->io; 345229997Sken 346264274Smav if (beio->beio_cont != NULL) { 347264274Smav beio->beio_cont(beio); 348264274Smav } else { 349264274Smav ctl_free_beio(beio); 350267537Smav ctl_data_submit_done(io); 351264274Smav } 352229997Sken} 353229997Sken 354229997Skenstatic int 355229997Skenctl_be_block_move_done(union ctl_io *io) 356229997Sken{ 357229997Sken struct ctl_be_block_io *beio; 358229997Sken struct ctl_be_block_lun *be_lun; 359267537Smav struct ctl_lba_len_flags *lbalen; 360229997Sken#ifdef CTL_TIME_IO 361229997Sken struct bintime cur_bt; 362267537Smav#endif 363267537Smav int i; 364229997Sken 365267519Smav beio = (struct ctl_be_block_io *)PRIV(io)->ptr; 366229997Sken be_lun = beio->lun; 367229997Sken 368229997Sken DPRINTF("entered\n"); 369229997Sken 370229997Sken#ifdef CTL_TIME_IO 371229997Sken getbintime(&cur_bt); 372229997Sken bintime_sub(&cur_bt, &io->io_hdr.dma_start_bt); 373229997Sken bintime_add(&io->io_hdr.dma_bt, &cur_bt); 374229997Sken io->io_hdr.num_dmas++; 375229997Sken#endif 376267537Smav io->scsiio.kern_rel_offset += io->scsiio.kern_data_len; 377229997Sken 378229997Sken /* 379229997Sken * We set status at this point for read commands, and write 380229997Sken * commands with errors. 381229997Sken */ 382275058Smav if (io->io_hdr.flags & CTL_FLAG_ABORT) { 383275058Smav ; 384275058Smav } else if ((io->io_hdr.port_status == 0) && 385267537Smav ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) { 386267537Smav lbalen = ARGS(beio->io); 387267537Smav if (lbalen->flags & CTL_LLF_READ) { 388267537Smav ctl_set_success(&io->scsiio); 389267537Smav } else if (lbalen->flags & CTL_LLF_COMPARE) { 390267537Smav /* We have two data blocks ready for comparison. */ 391267537Smav for (i = 0; i < beio->num_segs; i++) { 392267537Smav if (memcmp(beio->sg_segs[i].addr, 393267537Smav beio->sg_segs[i + CTLBLK_HALF_SEGS].addr, 394267537Smav beio->sg_segs[i].len) != 0) 395267537Smav break; 396267537Smav } 397267537Smav if (i < beio->num_segs) 398267537Smav ctl_set_sense(&io->scsiio, 399267537Smav /*current_error*/ 1, 400267537Smav /*sense_key*/ SSD_KEY_MISCOMPARE, 401267537Smav /*asc*/ 0x1D, 402267537Smav /*ascq*/ 0x00, 403267537Smav SSD_ELEM_NONE); 404267537Smav else 405267537Smav ctl_set_success(&io->scsiio); 406267537Smav } 407275058Smav } else if ((io->io_hdr.port_status != 0) && 408275058Smav ((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE || 409275058Smav (io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) { 410229997Sken /* 411229997Sken * For hardware error sense keys, the sense key 412229997Sken * specific value is defined to be a retry count, 413229997Sken * but we use it to pass back an internal FETD 414229997Sken * error code. XXX KDM Hopefully the FETD is only 415229997Sken * using 16 bits for an error code, since that's 416229997Sken * all the space we have in the sks field. 417229997Sken */ 418229997Sken ctl_set_internal_failure(&io->scsiio, 419229997Sken /*sks_valid*/ 1, 420229997Sken /*retry_count*/ 421229997Sken io->io_hdr.port_status); 422229997Sken } 423229997Sken 424229997Sken /* 425229997Sken * If this is a read, or a write with errors, it is done. 426229997Sken */ 427229997Sken if ((beio->bio_cmd == BIO_READ) 428229997Sken || ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0) 429229997Sken || ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) { 430229997Sken ctl_complete_beio(beio); 431229997Sken return (0); 432229997Sken } 433229997Sken 434229997Sken /* 435229997Sken * At this point, we have a write and the DMA completed 436229997Sken * successfully. We now have to queue it to the task queue to 437229997Sken * execute the backend I/O. That is because we do blocking 438229997Sken * memory allocations, and in the file backing case, blocking I/O. 439229997Sken * This move done routine is generally called in the SIM's 440229997Sken * interrupt context, and therefore we cannot block. 441229997Sken */ 442267877Smav mtx_lock(&be_lun->queue_lock); 443229997Sken /* 444229997Sken * XXX KDM make sure that links is okay to use at this point. 445229997Sken * Otherwise, we either need to add another field to ctl_io_hdr, 446229997Sken * or deal with resource allocation here. 447229997Sken */ 448229997Sken STAILQ_INSERT_TAIL(&be_lun->datamove_queue, &io->io_hdr, links); 449267877Smav mtx_unlock(&be_lun->queue_lock); 450229997Sken 451229997Sken taskqueue_enqueue(be_lun->io_taskqueue, &be_lun->io_task); 452229997Sken 453229997Sken return (0); 454229997Sken} 455229997Sken 456229997Skenstatic void 457229997Skenctl_be_block_biodone(struct bio *bio) 458229997Sken{ 459229997Sken struct ctl_be_block_io *beio; 460229997Sken struct ctl_be_block_lun *be_lun; 461229997Sken union ctl_io *io; 462261538Smav int error; 463229997Sken 464229997Sken beio = bio->bio_caller1; 465229997Sken be_lun = beio->lun; 466229997Sken io = beio->io; 467229997Sken 468229997Sken DPRINTF("entered\n"); 469229997Sken 470261538Smav error = bio->bio_error; 471267877Smav mtx_lock(&be_lun->io_lock); 472261538Smav if (error != 0) 473229997Sken beio->num_errors++; 474229997Sken 475229997Sken beio->num_bios_done++; 476229997Sken 477229997Sken /* 478229997Sken * XXX KDM will this cause WITNESS to complain? Holding a lock 479229997Sken * during the free might cause it to complain. 480229997Sken */ 481229997Sken g_destroy_bio(bio); 482229997Sken 483229997Sken /* 484229997Sken * If the send complete bit isn't set, or we aren't the last I/O to 485229997Sken * complete, then we're done. 486229997Sken */ 487229997Sken if ((beio->send_complete == 0) 488229997Sken || (beio->num_bios_done < beio->num_bios_sent)) { 489267877Smav mtx_unlock(&be_lun->io_lock); 490229997Sken return; 491229997Sken } 492229997Sken 493229997Sken /* 494229997Sken * At this point, we've verified that we are the last I/O to 495229997Sken * complete, so it's safe to drop the lock. 496229997Sken */ 497267877Smav devstat_end_transaction(beio->lun->disk_stats, beio->io_len, 498267877Smav beio->ds_tag_type, beio->ds_trans_type, 499267877Smav /*now*/ NULL, /*then*/&beio->ds_t0); 500267877Smav mtx_unlock(&be_lun->io_lock); 501229997Sken 502229997Sken /* 503229997Sken * If there are any errors from the backing device, we fail the 504229997Sken * entire I/O with a medium error. 505229997Sken */ 506229997Sken if (beio->num_errors > 0) { 507261538Smav if (error == EOPNOTSUPP) { 508261538Smav ctl_set_invalid_opcode(&io->scsiio); 509282565Smav } else if (error == ENOSPC || error == EDQUOT) { 510273809Smav ctl_set_space_alloc_fail(&io->scsiio); 511261538Smav } else if (beio->bio_cmd == BIO_FLUSH) { 512229997Sken /* XXX KDM is there is a better error here? */ 513229997Sken ctl_set_internal_failure(&io->scsiio, 514229997Sken /*sks_valid*/ 1, 515229997Sken /*retry_count*/ 0xbad2); 516229997Sken } else 517229997Sken ctl_set_medium_error(&io->scsiio); 518229997Sken ctl_complete_beio(beio); 519229997Sken return; 520229997Sken } 521229997Sken 522229997Sken /* 523267537Smav * If this is a write, a flush, a delete or verify, we're all done. 524229997Sken * If this is a read, we can now send the data to the user. 525229997Sken */ 526229997Sken if ((beio->bio_cmd == BIO_WRITE) 527264274Smav || (beio->bio_cmd == BIO_FLUSH) 528267537Smav || (beio->bio_cmd == BIO_DELETE) 529267537Smav || (ARGS(io)->flags & CTL_LLF_VERIFY)) { 530229997Sken ctl_set_success(&io->scsiio); 531229997Sken ctl_complete_beio(beio); 532229997Sken } else { 533275058Smav if ((ARGS(io)->flags & CTL_LLF_READ) && 534275058Smav beio->beio_cont == NULL) 535275058Smav ctl_set_success(&io->scsiio); 536229997Sken#ifdef CTL_TIME_IO 537229997Sken getbintime(&io->io_hdr.dma_start_bt); 538229997Sken#endif 539229997Sken ctl_datamove(io); 540229997Sken } 541229997Sken} 542229997Sken 543229997Skenstatic void 544229997Skenctl_be_block_flush_file(struct ctl_be_block_lun *be_lun, 545229997Sken struct ctl_be_block_io *beio) 546229997Sken{ 547267877Smav union ctl_io *io = beio->io; 548229997Sken struct mount *mountpoint; 549241896Skib int error, lock_flags; 550229997Sken 551229997Sken DPRINTF("entered\n"); 552229997Sken 553267877Smav binuptime(&beio->ds_t0); 554267877Smav mtx_lock(&be_lun->io_lock); 555267877Smav devstat_start_transaction(beio->lun->disk_stats, &beio->ds_t0); 556267877Smav mtx_unlock(&be_lun->io_lock); 557229997Sken 558267877Smav (void) vn_start_write(be_lun->vn, &mountpoint, V_WAIT); 559229997Sken 560229997Sken if (MNT_SHARED_WRITES(mountpoint) 561229997Sken || ((mountpoint == NULL) 562229997Sken && MNT_SHARED_WRITES(be_lun->vn->v_mount))) 563229997Sken lock_flags = LK_SHARED; 564229997Sken else 565229997Sken lock_flags = LK_EXCLUSIVE; 566229997Sken 567229997Sken vn_lock(be_lun->vn, lock_flags | LK_RETRY); 568229997Sken 569286353Smav error = VOP_FSYNC(be_lun->vn, beio->io_arg ? MNT_NOWAIT : MNT_WAIT, 570286353Smav curthread); 571229997Sken VOP_UNLOCK(be_lun->vn, 0); 572229997Sken 573229997Sken vn_finished_write(mountpoint); 574229997Sken 575267877Smav mtx_lock(&be_lun->io_lock); 576267877Smav devstat_end_transaction(beio->lun->disk_stats, beio->io_len, 577267877Smav beio->ds_tag_type, beio->ds_trans_type, 578267877Smav /*now*/ NULL, /*then*/&beio->ds_t0); 579267877Smav mtx_unlock(&be_lun->io_lock); 580267877Smav 581229997Sken if (error == 0) 582229997Sken ctl_set_success(&io->scsiio); 583229997Sken else { 584229997Sken /* XXX KDM is there is a better error here? */ 585229997Sken ctl_set_internal_failure(&io->scsiio, 586229997Sken /*sks_valid*/ 1, 587229997Sken /*retry_count*/ 0xbad1); 588229997Sken } 589229997Sken 590229997Sken ctl_complete_beio(beio); 591229997Sken} 592229997Sken 593258622SavgSDT_PROBE_DEFINE1(cbb, kernel, read, file_start, "uint64_t"); 594258622SavgSDT_PROBE_DEFINE1(cbb, kernel, write, file_start, "uint64_t"); 595258622SavgSDT_PROBE_DEFINE1(cbb, kernel, read, file_done,"uint64_t"); 596258622SavgSDT_PROBE_DEFINE1(cbb, kernel, write, file_done, "uint64_t"); 597229997Sken 598229997Skenstatic void 599229997Skenctl_be_block_dispatch_file(struct ctl_be_block_lun *be_lun, 600229997Sken struct ctl_be_block_io *beio) 601229997Sken{ 602229997Sken struct ctl_be_block_filedata *file_data; 603229997Sken union ctl_io *io; 604229997Sken struct uio xuio; 605229997Sken struct iovec *xiovec; 606241896Skib int flags; 607229997Sken int error, i; 608229997Sken 609229997Sken DPRINTF("entered\n"); 610229997Sken 611229997Sken file_data = &be_lun->backend.file; 612229997Sken io = beio->io; 613271309Smav flags = 0; 614271309Smav if (ARGS(io)->flags & CTL_LLF_DPO) 615271309Smav flags |= IO_DIRECT; 616271309Smav if (beio->bio_cmd == BIO_WRITE && ARGS(io)->flags & CTL_LLF_FUA) 617271309Smav flags |= IO_SYNC; 618229997Sken 619267537Smav bzero(&xuio, sizeof(xuio)); 620229997Sken if (beio->bio_cmd == BIO_READ) { 621229997Sken SDT_PROBE(cbb, kernel, read, file_start, 0, 0, 0, 0, 0); 622267537Smav xuio.uio_rw = UIO_READ; 623229997Sken } else { 624229997Sken SDT_PROBE(cbb, kernel, write, file_start, 0, 0, 0, 0, 0); 625267537Smav xuio.uio_rw = UIO_WRITE; 626229997Sken } 627229997Sken xuio.uio_offset = beio->io_offset; 628229997Sken xuio.uio_resid = beio->io_len; 629229997Sken xuio.uio_segflg = UIO_SYSSPACE; 630229997Sken xuio.uio_iov = beio->xiovecs; 631229997Sken xuio.uio_iovcnt = beio->num_segs; 632229997Sken xuio.uio_td = curthread; 633229997Sken 634229997Sken for (i = 0, xiovec = xuio.uio_iov; i < xuio.uio_iovcnt; i++, xiovec++) { 635229997Sken xiovec->iov_base = beio->sg_segs[i].addr; 636229997Sken xiovec->iov_len = beio->sg_segs[i].len; 637229997Sken } 638229997Sken 639267877Smav binuptime(&beio->ds_t0); 640267877Smav mtx_lock(&be_lun->io_lock); 641267877Smav devstat_start_transaction(beio->lun->disk_stats, &beio->ds_t0); 642267877Smav mtx_unlock(&be_lun->io_lock); 643267877Smav 644229997Sken if (beio->bio_cmd == BIO_READ) { 645229997Sken vn_lock(be_lun->vn, LK_SHARED | LK_RETRY); 646229997Sken 647229997Sken /* 648229997Sken * UFS pays attention to IO_DIRECT for reads. If the 649229997Sken * DIRECTIO option is configured into the kernel, it calls 650229997Sken * ffs_rawread(). But that only works for single-segment 651229997Sken * uios with user space addresses. In our case, with a 652229997Sken * kernel uio, it still reads into the buffer cache, but it 653229997Sken * will just try to release the buffer from the cache later 654229997Sken * on in ffs_read(). 655229997Sken * 656229997Sken * ZFS does not pay attention to IO_DIRECT for reads. 657229997Sken * 658229997Sken * UFS does not pay attention to IO_SYNC for reads. 659229997Sken * 660229997Sken * ZFS pays attention to IO_SYNC (which translates into the 661229997Sken * Solaris define FRSYNC for zfs_read()) for reads. It 662229997Sken * attempts to sync the file before reading. 663229997Sken */ 664271309Smav error = VOP_READ(be_lun->vn, &xuio, flags, file_data->cred); 665229997Sken 666229997Sken VOP_UNLOCK(be_lun->vn, 0); 667267537Smav SDT_PROBE(cbb, kernel, read, file_done, 0, 0, 0, 0, 0); 668229997Sken } else { 669229997Sken struct mount *mountpoint; 670229997Sken int lock_flags; 671229997Sken 672229997Sken (void)vn_start_write(be_lun->vn, &mountpoint, V_WAIT); 673229997Sken 674229997Sken if (MNT_SHARED_WRITES(mountpoint) 675229997Sken || ((mountpoint == NULL) 676229997Sken && MNT_SHARED_WRITES(be_lun->vn->v_mount))) 677229997Sken lock_flags = LK_SHARED; 678229997Sken else 679229997Sken lock_flags = LK_EXCLUSIVE; 680229997Sken 681229997Sken vn_lock(be_lun->vn, lock_flags | LK_RETRY); 682229997Sken 683229997Sken /* 684229997Sken * UFS pays attention to IO_DIRECT for writes. The write 685229997Sken * is done asynchronously. (Normally the write would just 686229997Sken * get put into cache. 687229997Sken * 688229997Sken * UFS pays attention to IO_SYNC for writes. It will 689229997Sken * attempt to write the buffer out synchronously if that 690229997Sken * flag is set. 691229997Sken * 692229997Sken * ZFS does not pay attention to IO_DIRECT for writes. 693229997Sken * 694229997Sken * ZFS pays attention to IO_SYNC (a.k.a. FSYNC or FRSYNC) 695229997Sken * for writes. It will flush the transaction from the 696229997Sken * cache before returning. 697229997Sken */ 698271309Smav error = VOP_WRITE(be_lun->vn, &xuio, flags, file_data->cred); 699229997Sken VOP_UNLOCK(be_lun->vn, 0); 700229997Sken 701229997Sken vn_finished_write(mountpoint); 702267537Smav SDT_PROBE(cbb, kernel, write, file_done, 0, 0, 0, 0, 0); 703229997Sken } 704229997Sken 705267877Smav mtx_lock(&be_lun->io_lock); 706267877Smav devstat_end_transaction(beio->lun->disk_stats, beio->io_len, 707267877Smav beio->ds_tag_type, beio->ds_trans_type, 708267877Smav /*now*/ NULL, /*then*/&beio->ds_t0); 709267877Smav mtx_unlock(&be_lun->io_lock); 710267877Smav 711229997Sken /* 712229997Sken * If we got an error, set the sense data to "MEDIUM ERROR" and 713229997Sken * return the I/O to the user. 714229997Sken */ 715229997Sken if (error != 0) { 716229997Sken char path_str[32]; 717229997Sken 718229997Sken ctl_scsi_path_string(io, path_str, sizeof(path_str)); 719229997Sken printf("%s%s command returned errno %d\n", path_str, 720229997Sken (beio->bio_cmd == BIO_READ) ? "READ" : "WRITE", error); 721282565Smav if (error == ENOSPC || error == EDQUOT) { 722273809Smav ctl_set_space_alloc_fail(&io->scsiio); 723273809Smav } else 724273809Smav ctl_set_medium_error(&io->scsiio); 725229997Sken ctl_complete_beio(beio); 726229997Sken return; 727229997Sken } 728229997Sken 729229997Sken /* 730269122Smav * If this is a write or a verify, we're all done. 731229997Sken * If this is a read, we can now send the data to the user. 732229997Sken */ 733269122Smav if ((beio->bio_cmd == BIO_WRITE) || 734269122Smav (ARGS(io)->flags & CTL_LLF_VERIFY)) { 735229997Sken ctl_set_success(&io->scsiio); 736229997Sken ctl_complete_beio(beio); 737229997Sken } else { 738275058Smav if ((ARGS(io)->flags & CTL_LLF_READ) && 739275058Smav beio->beio_cont == NULL) 740275058Smav ctl_set_success(&io->scsiio); 741229997Sken#ifdef CTL_TIME_IO 742229997Sken getbintime(&io->io_hdr.dma_start_bt); 743229997Sken#endif 744229997Sken ctl_datamove(io); 745229997Sken } 746229997Sken} 747229997Sken 748229997Skenstatic void 749275474Smavctl_be_block_gls_file(struct ctl_be_block_lun *be_lun, 750275474Smav struct ctl_be_block_io *beio) 751275474Smav{ 752275474Smav union ctl_io *io = beio->io; 753275474Smav struct ctl_lba_len_flags *lbalen = ARGS(io); 754275474Smav struct scsi_get_lba_status_data *data; 755275474Smav off_t roff, off; 756275474Smav int error, status; 757275474Smav 758275474Smav DPRINTF("entered\n"); 759275474Smav 760287499Smav off = roff = ((off_t)lbalen->lba) * be_lun->cbe_lun.blocksize; 761275474Smav vn_lock(be_lun->vn, LK_SHARED | LK_RETRY); 762275474Smav error = VOP_IOCTL(be_lun->vn, FIOSEEKHOLE, &off, 763275474Smav 0, curthread->td_ucred, curthread); 764275474Smav if (error == 0 && off > roff) 765275474Smav status = 0; /* mapped up to off */ 766275474Smav else { 767275474Smav error = VOP_IOCTL(be_lun->vn, FIOSEEKDATA, &off, 768275474Smav 0, curthread->td_ucred, curthread); 769275474Smav if (error == 0 && off > roff) 770275474Smav status = 1; /* deallocated up to off */ 771275474Smav else { 772275474Smav status = 0; /* unknown up to the end */ 773275474Smav off = be_lun->size_bytes; 774275474Smav } 775275474Smav } 776275474Smav VOP_UNLOCK(be_lun->vn, 0); 777275474Smav 778275474Smav data = (struct scsi_get_lba_status_data *)io->scsiio.kern_data_ptr; 779275474Smav scsi_u64to8b(lbalen->lba, data->descr[0].addr); 780287499Smav scsi_ulto4b(MIN(UINT32_MAX, off / be_lun->cbe_lun.blocksize - 781287499Smav lbalen->lba), data->descr[0].length); 782275474Smav data->descr[0].status = status; 783275474Smav 784275474Smav ctl_complete_beio(beio); 785275474Smav} 786275474Smav 787275481Smavstatic uint64_t 788275481Smavctl_be_block_getattr_file(struct ctl_be_block_lun *be_lun, const char *attrname) 789275481Smav{ 790275481Smav struct vattr vattr; 791275481Smav struct statfs statfs; 792285030Smav uint64_t val; 793275481Smav int error; 794275481Smav 795285030Smav val = UINT64_MAX; 796275481Smav if (be_lun->vn == NULL) 797285030Smav return (val); 798285030Smav vn_lock(be_lun->vn, LK_SHARED | LK_RETRY); 799275481Smav if (strcmp(attrname, "blocksused") == 0) { 800275481Smav error = VOP_GETATTR(be_lun->vn, &vattr, curthread->td_ucred); 801285030Smav if (error == 0) 802287499Smav val = vattr.va_bytes / be_lun->cbe_lun.blocksize; 803275481Smav } 804285030Smav if (strcmp(attrname, "blocksavail") == 0 && 805285030Smav (be_lun->vn->v_iflag & VI_DOOMED) == 0) { 806275481Smav error = VFS_STATFS(be_lun->vn->v_mount, &statfs); 807285030Smav if (error == 0) 808286811Smav val = statfs.f_bavail * statfs.f_bsize / 809287499Smav be_lun->cbe_lun.blocksize; 810275481Smav } 811285030Smav VOP_UNLOCK(be_lun->vn, 0); 812285030Smav return (val); 813275481Smav} 814275481Smav 815275474Smavstatic void 816269123Smavctl_be_block_dispatch_zvol(struct ctl_be_block_lun *be_lun, 817269123Smav struct ctl_be_block_io *beio) 818269123Smav{ 819269123Smav union ctl_io *io; 820287664Smav struct cdevsw *csw; 821287664Smav struct cdev *dev; 822269123Smav struct uio xuio; 823269123Smav struct iovec *xiovec; 824287664Smav int error, flags, i, ref; 825269123Smav 826269123Smav DPRINTF("entered\n"); 827269123Smav 828269123Smav io = beio->io; 829271309Smav flags = 0; 830271309Smav if (ARGS(io)->flags & CTL_LLF_DPO) 831271309Smav flags |= IO_DIRECT; 832271309Smav if (beio->bio_cmd == BIO_WRITE && ARGS(io)->flags & CTL_LLF_FUA) 833271309Smav flags |= IO_SYNC; 834269123Smav 835269123Smav bzero(&xuio, sizeof(xuio)); 836269123Smav if (beio->bio_cmd == BIO_READ) { 837269123Smav SDT_PROBE(cbb, kernel, read, file_start, 0, 0, 0, 0, 0); 838269123Smav xuio.uio_rw = UIO_READ; 839269123Smav } else { 840269123Smav SDT_PROBE(cbb, kernel, write, file_start, 0, 0, 0, 0, 0); 841269123Smav xuio.uio_rw = UIO_WRITE; 842269123Smav } 843269123Smav xuio.uio_offset = beio->io_offset; 844269123Smav xuio.uio_resid = beio->io_len; 845269123Smav xuio.uio_segflg = UIO_SYSSPACE; 846269123Smav xuio.uio_iov = beio->xiovecs; 847269123Smav xuio.uio_iovcnt = beio->num_segs; 848269123Smav xuio.uio_td = curthread; 849269123Smav 850269123Smav for (i = 0, xiovec = xuio.uio_iov; i < xuio.uio_iovcnt; i++, xiovec++) { 851269123Smav xiovec->iov_base = beio->sg_segs[i].addr; 852269123Smav xiovec->iov_len = beio->sg_segs[i].len; 853269123Smav } 854269123Smav 855269123Smav binuptime(&beio->ds_t0); 856269123Smav mtx_lock(&be_lun->io_lock); 857269123Smav devstat_start_transaction(beio->lun->disk_stats, &beio->ds_t0); 858269123Smav mtx_unlock(&be_lun->io_lock); 859269123Smav 860287664Smav csw = devvn_refthread(be_lun->vn, &dev, &ref); 861287664Smav if (csw) { 862287664Smav if (beio->bio_cmd == BIO_READ) 863287664Smav error = csw->d_read(dev, &xuio, flags); 864287664Smav else 865287664Smav error = csw->d_write(dev, &xuio, flags); 866287664Smav dev_relthread(dev, ref); 867287664Smav } else 868287664Smav error = ENXIO; 869287664Smav 870287664Smav if (beio->bio_cmd == BIO_READ) 871269123Smav SDT_PROBE(cbb, kernel, read, file_done, 0, 0, 0, 0, 0); 872287664Smav else 873269123Smav SDT_PROBE(cbb, kernel, write, file_done, 0, 0, 0, 0, 0); 874269123Smav 875269123Smav mtx_lock(&be_lun->io_lock); 876269123Smav devstat_end_transaction(beio->lun->disk_stats, beio->io_len, 877269123Smav beio->ds_tag_type, beio->ds_trans_type, 878269123Smav /*now*/ NULL, /*then*/&beio->ds_t0); 879269123Smav mtx_unlock(&be_lun->io_lock); 880269123Smav 881269123Smav /* 882269123Smav * If we got an error, set the sense data to "MEDIUM ERROR" and 883269123Smav * return the I/O to the user. 884269123Smav */ 885269123Smav if (error != 0) { 886282565Smav if (error == ENOSPC || error == EDQUOT) { 887273809Smav ctl_set_space_alloc_fail(&io->scsiio); 888273809Smav } else 889273809Smav ctl_set_medium_error(&io->scsiio); 890269123Smav ctl_complete_beio(beio); 891269123Smav return; 892269123Smav } 893269123Smav 894269123Smav /* 895269123Smav * If this is a write or a verify, we're all done. 896269123Smav * If this is a read, we can now send the data to the user. 897269123Smav */ 898269123Smav if ((beio->bio_cmd == BIO_WRITE) || 899269123Smav (ARGS(io)->flags & CTL_LLF_VERIFY)) { 900269123Smav ctl_set_success(&io->scsiio); 901269123Smav ctl_complete_beio(beio); 902269123Smav } else { 903275058Smav if ((ARGS(io)->flags & CTL_LLF_READ) && 904275058Smav beio->beio_cont == NULL) 905275058Smav ctl_set_success(&io->scsiio); 906269123Smav#ifdef CTL_TIME_IO 907269123Smav getbintime(&io->io_hdr.dma_start_bt); 908269123Smav#endif 909269123Smav ctl_datamove(io); 910269123Smav } 911269123Smav} 912269123Smav 913269123Smavstatic void 914275474Smavctl_be_block_gls_zvol(struct ctl_be_block_lun *be_lun, 915275474Smav struct ctl_be_block_io *beio) 916275474Smav{ 917275474Smav union ctl_io *io = beio->io; 918287664Smav struct cdevsw *csw; 919287664Smav struct cdev *dev; 920275474Smav struct ctl_lba_len_flags *lbalen = ARGS(io); 921275474Smav struct scsi_get_lba_status_data *data; 922275474Smav off_t roff, off; 923287664Smav int error, ref, status; 924275474Smav 925275474Smav DPRINTF("entered\n"); 926275474Smav 927287664Smav csw = devvn_refthread(be_lun->vn, &dev, &ref); 928287664Smav if (csw == NULL) { 929287664Smav status = 0; /* unknown up to the end */ 930287664Smav off = be_lun->size_bytes; 931287664Smav goto done; 932287664Smav } 933287499Smav off = roff = ((off_t)lbalen->lba) * be_lun->cbe_lun.blocksize; 934287664Smav error = csw->d_ioctl(dev, FIOSEEKHOLE, (caddr_t)&off, FREAD, 935287664Smav curthread); 936275474Smav if (error == 0 && off > roff) 937275474Smav status = 0; /* mapped up to off */ 938275474Smav else { 939287664Smav error = csw->d_ioctl(dev, FIOSEEKDATA, (caddr_t)&off, FREAD, 940287664Smav curthread); 941275474Smav if (error == 0 && off > roff) 942275474Smav status = 1; /* deallocated up to off */ 943275474Smav else { 944275474Smav status = 0; /* unknown up to the end */ 945275474Smav off = be_lun->size_bytes; 946275474Smav } 947275474Smav } 948287664Smav dev_relthread(dev, ref); 949275474Smav 950287664Smavdone: 951275474Smav data = (struct scsi_get_lba_status_data *)io->scsiio.kern_data_ptr; 952275474Smav scsi_u64to8b(lbalen->lba, data->descr[0].addr); 953287499Smav scsi_ulto4b(MIN(UINT32_MAX, off / be_lun->cbe_lun.blocksize - 954287499Smav lbalen->lba), data->descr[0].length); 955275474Smav data->descr[0].status = status; 956275474Smav 957275474Smav ctl_complete_beio(beio); 958275474Smav} 959275474Smav 960275474Smavstatic void 961229997Skenctl_be_block_flush_dev(struct ctl_be_block_lun *be_lun, 962229997Sken struct ctl_be_block_io *beio) 963229997Sken{ 964229997Sken struct bio *bio; 965229997Sken union ctl_io *io; 966287664Smav struct cdevsw *csw; 967287664Smav struct cdev *dev; 968287664Smav int ref; 969229997Sken 970229997Sken io = beio->io; 971229997Sken 972229997Sken DPRINTF("entered\n"); 973229997Sken 974229997Sken /* This can't fail, it's a blocking allocation. */ 975229997Sken bio = g_alloc_bio(); 976229997Sken 977229997Sken bio->bio_cmd = BIO_FLUSH; 978229997Sken bio->bio_offset = 0; 979229997Sken bio->bio_data = 0; 980229997Sken bio->bio_done = ctl_be_block_biodone; 981229997Sken bio->bio_caller1 = beio; 982229997Sken bio->bio_pblkno = 0; 983229997Sken 984229997Sken /* 985229997Sken * We don't need to acquire the LUN lock here, because we are only 986229997Sken * sending one bio, and so there is no other context to synchronize 987229997Sken * with. 988229997Sken */ 989229997Sken beio->num_bios_sent = 1; 990229997Sken beio->send_complete = 1; 991229997Sken 992229997Sken binuptime(&beio->ds_t0); 993267877Smav mtx_lock(&be_lun->io_lock); 994229997Sken devstat_start_transaction(be_lun->disk_stats, &beio->ds_t0); 995267877Smav mtx_unlock(&be_lun->io_lock); 996229997Sken 997287664Smav csw = devvn_refthread(be_lun->vn, &dev, &ref); 998287664Smav if (csw) { 999287664Smav bio->bio_dev = dev; 1000287664Smav csw->d_strategy(bio); 1001287664Smav dev_relthread(dev, ref); 1002287664Smav } else { 1003287664Smav bio->bio_error = ENXIO; 1004287664Smav ctl_be_block_biodone(bio); 1005287664Smav } 1006229997Sken} 1007229997Sken 1008229997Skenstatic void 1009264274Smavctl_be_block_unmap_dev_range(struct ctl_be_block_lun *be_lun, 1010264274Smav struct ctl_be_block_io *beio, 1011264274Smav uint64_t off, uint64_t len, int last) 1012264274Smav{ 1013264274Smav struct bio *bio; 1014264296Smav uint64_t maxlen; 1015287664Smav struct cdevsw *csw; 1016287664Smav struct cdev *dev; 1017287664Smav int ref; 1018264274Smav 1019287664Smav csw = devvn_refthread(be_lun->vn, &dev, &ref); 1020287499Smav maxlen = LONG_MAX - (LONG_MAX % be_lun->cbe_lun.blocksize); 1021264274Smav while (len > 0) { 1022264274Smav bio = g_alloc_bio(); 1023264274Smav bio->bio_cmd = BIO_DELETE; 1024287664Smav bio->bio_dev = dev; 1025264274Smav bio->bio_offset = off; 1026264296Smav bio->bio_length = MIN(len, maxlen); 1027264274Smav bio->bio_data = 0; 1028264274Smav bio->bio_done = ctl_be_block_biodone; 1029264274Smav bio->bio_caller1 = beio; 1030287499Smav bio->bio_pblkno = off / be_lun->cbe_lun.blocksize; 1031264274Smav 1032264274Smav off += bio->bio_length; 1033264274Smav len -= bio->bio_length; 1034264274Smav 1035267877Smav mtx_lock(&be_lun->io_lock); 1036264274Smav beio->num_bios_sent++; 1037264274Smav if (last && len == 0) 1038264274Smav beio->send_complete = 1; 1039267877Smav mtx_unlock(&be_lun->io_lock); 1040264274Smav 1041287664Smav if (csw) { 1042287664Smav csw->d_strategy(bio); 1043287664Smav } else { 1044287664Smav bio->bio_error = ENXIO; 1045287664Smav ctl_be_block_biodone(bio); 1046287664Smav } 1047264274Smav } 1048287664Smav if (csw) 1049287664Smav dev_relthread(dev, ref); 1050264274Smav} 1051264274Smav 1052264274Smavstatic void 1053264274Smavctl_be_block_unmap_dev(struct ctl_be_block_lun *be_lun, 1054264274Smav struct ctl_be_block_io *beio) 1055264274Smav{ 1056264274Smav union ctl_io *io; 1057267515Smav struct ctl_ptr_len_flags *ptrlen; 1058264274Smav struct scsi_unmap_desc *buf, *end; 1059264274Smav uint64_t len; 1060264274Smav 1061264274Smav io = beio->io; 1062264274Smav 1063264274Smav DPRINTF("entered\n"); 1064264274Smav 1065264274Smav binuptime(&beio->ds_t0); 1066267877Smav mtx_lock(&be_lun->io_lock); 1067264274Smav devstat_start_transaction(be_lun->disk_stats, &beio->ds_t0); 1068267877Smav mtx_unlock(&be_lun->io_lock); 1069264274Smav 1070264274Smav if (beio->io_offset == -1) { 1071264274Smav beio->io_len = 0; 1072267515Smav ptrlen = (struct ctl_ptr_len_flags *)&io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 1073267515Smav buf = (struct scsi_unmap_desc *)ptrlen->ptr; 1074267515Smav end = buf + ptrlen->len / sizeof(*buf); 1075264274Smav for (; buf < end; buf++) { 1076264274Smav len = (uint64_t)scsi_4btoul(buf->length) * 1077287499Smav be_lun->cbe_lun.blocksize; 1078264274Smav beio->io_len += len; 1079264274Smav ctl_be_block_unmap_dev_range(be_lun, beio, 1080287499Smav scsi_8btou64(buf->lba) * be_lun->cbe_lun.blocksize, 1081287499Smav len, (end - buf < 2) ? TRUE : FALSE); 1082264274Smav } 1083264274Smav } else 1084264274Smav ctl_be_block_unmap_dev_range(be_lun, beio, 1085264274Smav beio->io_offset, beio->io_len, TRUE); 1086264274Smav} 1087264274Smav 1088264274Smavstatic void 1089229997Skenctl_be_block_dispatch_dev(struct ctl_be_block_lun *be_lun, 1090229997Sken struct ctl_be_block_io *beio) 1091229997Sken{ 1092267877Smav TAILQ_HEAD(, bio) queue = TAILQ_HEAD_INITIALIZER(queue); 1093229997Sken struct bio *bio; 1094287664Smav struct cdevsw *csw; 1095287664Smav struct cdev *dev; 1096229997Sken off_t cur_offset; 1097287664Smav int i, max_iosize, ref; 1098229997Sken 1099229997Sken DPRINTF("entered\n"); 1100287664Smav csw = devvn_refthread(be_lun->vn, &dev, &ref); 1101229997Sken 1102229997Sken /* 1103229997Sken * We have to limit our I/O size to the maximum supported by the 1104229997Sken * backend device. Hopefully it is MAXPHYS. If the driver doesn't 1105229997Sken * set it properly, use DFLTPHYS. 1106229997Sken */ 1107287664Smav if (csw) { 1108287664Smav max_iosize = dev->si_iosize_max; 1109287664Smav if (max_iosize < PAGE_SIZE) 1110287664Smav max_iosize = DFLTPHYS; 1111287664Smav } else 1112229997Sken max_iosize = DFLTPHYS; 1113229997Sken 1114229997Sken cur_offset = beio->io_offset; 1115229997Sken for (i = 0; i < beio->num_segs; i++) { 1116229997Sken size_t cur_size; 1117229997Sken uint8_t *cur_ptr; 1118229997Sken 1119229997Sken cur_size = beio->sg_segs[i].len; 1120229997Sken cur_ptr = beio->sg_segs[i].addr; 1121229997Sken 1122229997Sken while (cur_size > 0) { 1123229997Sken /* This can't fail, it's a blocking allocation. */ 1124229997Sken bio = g_alloc_bio(); 1125229997Sken 1126229997Sken KASSERT(bio != NULL, ("g_alloc_bio() failed!\n")); 1127229997Sken 1128229997Sken bio->bio_cmd = beio->bio_cmd; 1129287664Smav bio->bio_dev = dev; 1130229997Sken bio->bio_caller1 = beio; 1131229997Sken bio->bio_length = min(cur_size, max_iosize); 1132229997Sken bio->bio_offset = cur_offset; 1133229997Sken bio->bio_data = cur_ptr; 1134229997Sken bio->bio_done = ctl_be_block_biodone; 1135287499Smav bio->bio_pblkno = cur_offset / be_lun->cbe_lun.blocksize; 1136229997Sken 1137229997Sken cur_offset += bio->bio_length; 1138229997Sken cur_ptr += bio->bio_length; 1139229997Sken cur_size -= bio->bio_length; 1140229997Sken 1141267877Smav TAILQ_INSERT_TAIL(&queue, bio, bio_queue); 1142229997Sken beio->num_bios_sent++; 1143229997Sken } 1144229997Sken } 1145267877Smav binuptime(&beio->ds_t0); 1146267877Smav mtx_lock(&be_lun->io_lock); 1147267877Smav devstat_start_transaction(be_lun->disk_stats, &beio->ds_t0); 1148267877Smav beio->send_complete = 1; 1149267877Smav mtx_unlock(&be_lun->io_lock); 1150267877Smav 1151267877Smav /* 1152267877Smav * Fire off all allocated requests! 1153267877Smav */ 1154267877Smav while ((bio = TAILQ_FIRST(&queue)) != NULL) { 1155267877Smav TAILQ_REMOVE(&queue, bio, bio_queue); 1156287664Smav if (csw) 1157287664Smav csw->d_strategy(bio); 1158287664Smav else { 1159287664Smav bio->bio_error = ENXIO; 1160287664Smav ctl_be_block_biodone(bio); 1161287664Smav } 1162267877Smav } 1163287664Smav if (csw) 1164287664Smav dev_relthread(dev, ref); 1165229997Sken} 1166229997Sken 1167274154Smavstatic uint64_t 1168274154Smavctl_be_block_getattr_dev(struct ctl_be_block_lun *be_lun, const char *attrname) 1169274154Smav{ 1170274154Smav struct diocgattr_arg arg; 1171287664Smav struct cdevsw *csw; 1172287664Smav struct cdev *dev; 1173287664Smav int error, ref; 1174274154Smav 1175287664Smav csw = devvn_refthread(be_lun->vn, &dev, &ref); 1176287664Smav if (csw == NULL) 1177274154Smav return (UINT64_MAX); 1178274154Smav strlcpy(arg.name, attrname, sizeof(arg.name)); 1179274154Smav arg.len = sizeof(arg.value.off); 1180287664Smav if (csw->d_ioctl) { 1181287664Smav error = csw->d_ioctl(dev, DIOCGATTR, (caddr_t)&arg, FREAD, 1182287664Smav curthread); 1183287664Smav } else 1184287664Smav error = ENODEV; 1185287664Smav dev_relthread(dev, ref); 1186274154Smav if (error != 0) 1187274154Smav return (UINT64_MAX); 1188274154Smav return (arg.value.off); 1189274154Smav} 1190274154Smav 1191229997Skenstatic void 1192286353Smavctl_be_block_cw_dispatch_sync(struct ctl_be_block_lun *be_lun, 1193286353Smav union ctl_io *io) 1194286353Smav{ 1195287499Smav struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun; 1196286353Smav struct ctl_be_block_io *beio; 1197286353Smav struct ctl_lba_len_flags *lbalen; 1198286353Smav 1199286353Smav DPRINTF("entered\n"); 1200286353Smav beio = (struct ctl_be_block_io *)PRIV(io)->ptr; 1201286353Smav lbalen = (struct ctl_lba_len_flags *)&io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 1202286353Smav 1203287499Smav beio->io_len = lbalen->len * cbe_lun->blocksize; 1204287499Smav beio->io_offset = lbalen->lba * cbe_lun->blocksize; 1205286353Smav beio->io_arg = (lbalen->flags & SSC_IMMED) != 0; 1206286353Smav beio->bio_cmd = BIO_FLUSH; 1207286353Smav beio->ds_trans_type = DEVSTAT_NO_DATA; 1208286353Smav DPRINTF("SYNC\n"); 1209286353Smav be_lun->lun_flush(be_lun, beio); 1210286353Smav} 1211286353Smav 1212286353Smavstatic void 1213264274Smavctl_be_block_cw_done_ws(struct ctl_be_block_io *beio) 1214264274Smav{ 1215264274Smav union ctl_io *io; 1216264274Smav 1217264274Smav io = beio->io; 1218264274Smav ctl_free_beio(beio); 1219267641Smav if ((io->io_hdr.flags & CTL_FLAG_ABORT) || 1220267641Smav ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE && 1221267641Smav (io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS)) { 1222264274Smav ctl_config_write_done(io); 1223264274Smav return; 1224264274Smav } 1225264274Smav 1226264274Smav ctl_be_block_config_write(io); 1227264274Smav} 1228264274Smav 1229264274Smavstatic void 1230264274Smavctl_be_block_cw_dispatch_ws(struct ctl_be_block_lun *be_lun, 1231264274Smav union ctl_io *io) 1232264274Smav{ 1233287499Smav struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun; 1234264274Smav struct ctl_be_block_io *beio; 1235267515Smav struct ctl_lba_len_flags *lbalen; 1236278625Smav uint64_t len_left, lba; 1237278625Smav uint32_t pb, pbo, adj; 1238264274Smav int i, seglen; 1239264274Smav uint8_t *buf, *end; 1240264274Smav 1241264274Smav DPRINTF("entered\n"); 1242264274Smav 1243267519Smav beio = (struct ctl_be_block_io *)PRIV(io)->ptr; 1244267537Smav lbalen = ARGS(beio->io); 1245264274Smav 1246271839Smav if (lbalen->flags & ~(SWS_LBDATA | SWS_UNMAP | SWS_ANCHOR | SWS_NDOB) || 1247269622Smav (lbalen->flags & (SWS_UNMAP | SWS_ANCHOR) && be_lun->unmap == NULL)) { 1248264274Smav ctl_free_beio(beio); 1249264274Smav ctl_set_invalid_field(&io->scsiio, 1250264274Smav /*sks_valid*/ 1, 1251264274Smav /*command*/ 1, 1252264274Smav /*field*/ 1, 1253264274Smav /*bit_valid*/ 0, 1254264274Smav /*bit*/ 0); 1255264274Smav ctl_config_write_done(io); 1256264274Smav return; 1257264274Smav } 1258264274Smav 1259269622Smav if (lbalen->flags & (SWS_UNMAP | SWS_ANCHOR)) { 1260287499Smav beio->io_offset = lbalen->lba * cbe_lun->blocksize; 1261287499Smav beio->io_len = (uint64_t)lbalen->len * cbe_lun->blocksize; 1262264274Smav beio->bio_cmd = BIO_DELETE; 1263264274Smav beio->ds_trans_type = DEVSTAT_FREE; 1264264274Smav 1265264274Smav be_lun->unmap(be_lun, beio); 1266264274Smav return; 1267264274Smav } 1268264274Smav 1269264274Smav beio->bio_cmd = BIO_WRITE; 1270264274Smav beio->ds_trans_type = DEVSTAT_WRITE; 1271264274Smav 1272264274Smav DPRINTF("WRITE SAME at LBA %jx len %u\n", 1273267515Smav (uintmax_t)lbalen->lba, lbalen->len); 1274264274Smav 1275287499Smav pb = cbe_lun->blocksize << be_lun->cbe_lun.pblockexp; 1276287499Smav if (be_lun->cbe_lun.pblockoff > 0) 1277287499Smav pbo = pb - cbe_lun->blocksize * be_lun->cbe_lun.pblockoff; 1278278625Smav else 1279278625Smav pbo = 0; 1280287499Smav len_left = (uint64_t)lbalen->len * cbe_lun->blocksize; 1281264274Smav for (i = 0, lba = 0; i < CTLBLK_MAX_SEGS && len_left > 0; i++) { 1282264274Smav 1283264274Smav /* 1284264274Smav * Setup the S/G entry for this chunk. 1285264274Smav */ 1286264886Smav seglen = MIN(CTLBLK_MAX_SEG, len_left); 1287287499Smav if (pb > cbe_lun->blocksize) { 1288287499Smav adj = ((lbalen->lba + lba) * cbe_lun->blocksize + 1289278619Smav seglen - pbo) % pb; 1290278619Smav if (seglen > adj) 1291278619Smav seglen -= adj; 1292278619Smav else 1293287499Smav seglen -= seglen % cbe_lun->blocksize; 1294278619Smav } else 1295287499Smav seglen -= seglen % cbe_lun->blocksize; 1296264274Smav beio->sg_segs[i].len = seglen; 1297264274Smav beio->sg_segs[i].addr = uma_zalloc(be_lun->lun_zone, M_WAITOK); 1298264274Smav 1299264274Smav DPRINTF("segment %d addr %p len %zd\n", i, 1300264274Smav beio->sg_segs[i].addr, beio->sg_segs[i].len); 1301264274Smav 1302264274Smav beio->num_segs++; 1303264274Smav len_left -= seglen; 1304264274Smav 1305264274Smav buf = beio->sg_segs[i].addr; 1306264274Smav end = buf + seglen; 1307287499Smav for (; buf < end; buf += cbe_lun->blocksize) { 1308287499Smav memcpy(buf, io->scsiio.kern_data_ptr, cbe_lun->blocksize); 1309267515Smav if (lbalen->flags & SWS_LBDATA) 1310267515Smav scsi_ulto4b(lbalen->lba + lba, buf); 1311264274Smav lba++; 1312264274Smav } 1313264274Smav } 1314264274Smav 1315287499Smav beio->io_offset = lbalen->lba * cbe_lun->blocksize; 1316287499Smav beio->io_len = lba * cbe_lun->blocksize; 1317264274Smav 1318264274Smav /* We can not do all in one run. Correct and schedule rerun. */ 1319264274Smav if (len_left > 0) { 1320267515Smav lbalen->lba += lba; 1321267515Smav lbalen->len -= lba; 1322264274Smav beio->beio_cont = ctl_be_block_cw_done_ws; 1323264274Smav } 1324264274Smav 1325264274Smav be_lun->dispatch(be_lun, beio); 1326264274Smav} 1327264274Smav 1328264274Smavstatic void 1329264274Smavctl_be_block_cw_dispatch_unmap(struct ctl_be_block_lun *be_lun, 1330264274Smav union ctl_io *io) 1331264274Smav{ 1332264274Smav struct ctl_be_block_io *beio; 1333267515Smav struct ctl_ptr_len_flags *ptrlen; 1334264274Smav 1335264274Smav DPRINTF("entered\n"); 1336264274Smav 1337267519Smav beio = (struct ctl_be_block_io *)PRIV(io)->ptr; 1338267515Smav ptrlen = (struct ctl_ptr_len_flags *)&io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN]; 1339264274Smav 1340269622Smav if ((ptrlen->flags & ~SU_ANCHOR) != 0 || be_lun->unmap == NULL) { 1341264274Smav ctl_free_beio(beio); 1342264274Smav ctl_set_invalid_field(&io->scsiio, 1343264274Smav /*sks_valid*/ 0, 1344264274Smav /*command*/ 1, 1345264274Smav /*field*/ 0, 1346264274Smav /*bit_valid*/ 0, 1347264274Smav /*bit*/ 0); 1348264274Smav ctl_config_write_done(io); 1349264274Smav return; 1350264274Smav } 1351264274Smav 1352264274Smav beio->io_len = 0; 1353264274Smav beio->io_offset = -1; 1354264274Smav beio->bio_cmd = BIO_DELETE; 1355264274Smav beio->ds_trans_type = DEVSTAT_FREE; 1356267515Smav DPRINTF("UNMAP\n"); 1357264274Smav be_lun->unmap(be_lun, beio); 1358264274Smav} 1359264274Smav 1360264274Smavstatic void 1361275474Smavctl_be_block_cr_done(struct ctl_be_block_io *beio) 1362275474Smav{ 1363275474Smav union ctl_io *io; 1364275474Smav 1365275474Smav io = beio->io; 1366275474Smav ctl_free_beio(beio); 1367275474Smav ctl_config_read_done(io); 1368275474Smav} 1369275474Smav 1370275474Smavstatic void 1371275474Smavctl_be_block_cr_dispatch(struct ctl_be_block_lun *be_lun, 1372275474Smav union ctl_io *io) 1373275474Smav{ 1374275474Smav struct ctl_be_block_io *beio; 1375275474Smav struct ctl_be_block_softc *softc; 1376275474Smav 1377275474Smav DPRINTF("entered\n"); 1378275474Smav 1379275474Smav softc = be_lun->softc; 1380275474Smav beio = ctl_alloc_beio(softc); 1381275474Smav beio->io = io; 1382275474Smav beio->lun = be_lun; 1383275474Smav beio->beio_cont = ctl_be_block_cr_done; 1384275474Smav PRIV(io)->ptr = (void *)beio; 1385275474Smav 1386275474Smav switch (io->scsiio.cdb[0]) { 1387275474Smav case SERVICE_ACTION_IN: /* GET LBA STATUS */ 1388275474Smav beio->bio_cmd = -1; 1389275474Smav beio->ds_trans_type = DEVSTAT_NO_DATA; 1390275474Smav beio->ds_tag_type = DEVSTAT_TAG_ORDERED; 1391275474Smav beio->io_len = 0; 1392275474Smav if (be_lun->get_lba_status) 1393275474Smav be_lun->get_lba_status(be_lun, beio); 1394275474Smav else 1395275474Smav ctl_be_block_cr_done(beio); 1396275474Smav break; 1397275474Smav default: 1398275474Smav panic("Unhandled CDB type %#x", io->scsiio.cdb[0]); 1399275474Smav break; 1400275474Smav } 1401275474Smav} 1402275474Smav 1403275474Smavstatic void 1404264274Smavctl_be_block_cw_done(struct ctl_be_block_io *beio) 1405264274Smav{ 1406264274Smav union ctl_io *io; 1407264274Smav 1408264274Smav io = beio->io; 1409264274Smav ctl_free_beio(beio); 1410264274Smav ctl_config_write_done(io); 1411264274Smav} 1412264274Smav 1413264274Smavstatic void 1414229997Skenctl_be_block_cw_dispatch(struct ctl_be_block_lun *be_lun, 1415229997Sken union ctl_io *io) 1416229997Sken{ 1417229997Sken struct ctl_be_block_io *beio; 1418229997Sken struct ctl_be_block_softc *softc; 1419229997Sken 1420229997Sken DPRINTF("entered\n"); 1421229997Sken 1422229997Sken softc = be_lun->softc; 1423229997Sken beio = ctl_alloc_beio(softc); 1424229997Sken beio->io = io; 1425229997Sken beio->lun = be_lun; 1426264274Smav beio->beio_cont = ctl_be_block_cw_done; 1427286353Smav switch (io->scsiio.tag_type) { 1428286353Smav case CTL_TAG_ORDERED: 1429286353Smav beio->ds_tag_type = DEVSTAT_TAG_ORDERED; 1430286353Smav break; 1431286353Smav case CTL_TAG_HEAD_OF_QUEUE: 1432286353Smav beio->ds_tag_type = DEVSTAT_TAG_HEAD; 1433286353Smav break; 1434286353Smav case CTL_TAG_UNTAGGED: 1435286353Smav case CTL_TAG_SIMPLE: 1436286353Smav case CTL_TAG_ACA: 1437286353Smav default: 1438286353Smav beio->ds_tag_type = DEVSTAT_TAG_SIMPLE; 1439286353Smav break; 1440286353Smav } 1441267519Smav PRIV(io)->ptr = (void *)beio; 1442229997Sken 1443229997Sken switch (io->scsiio.cdb[0]) { 1444229997Sken case SYNCHRONIZE_CACHE: 1445229997Sken case SYNCHRONIZE_CACHE_16: 1446286353Smav ctl_be_block_cw_dispatch_sync(be_lun, io); 1447229997Sken break; 1448264274Smav case WRITE_SAME_10: 1449264274Smav case WRITE_SAME_16: 1450264274Smav ctl_be_block_cw_dispatch_ws(be_lun, io); 1451264274Smav break; 1452264274Smav case UNMAP: 1453264274Smav ctl_be_block_cw_dispatch_unmap(be_lun, io); 1454264274Smav break; 1455229997Sken default: 1456229997Sken panic("Unhandled CDB type %#x", io->scsiio.cdb[0]); 1457229997Sken break; 1458229997Sken } 1459229997Sken} 1460229997Sken 1461258622SavgSDT_PROBE_DEFINE1(cbb, kernel, read, start, "uint64_t"); 1462258622SavgSDT_PROBE_DEFINE1(cbb, kernel, write, start, "uint64_t"); 1463258622SavgSDT_PROBE_DEFINE1(cbb, kernel, read, alloc_done, "uint64_t"); 1464258622SavgSDT_PROBE_DEFINE1(cbb, kernel, write, alloc_done, "uint64_t"); 1465229997Sken 1466229997Skenstatic void 1467264886Smavctl_be_block_next(struct ctl_be_block_io *beio) 1468264886Smav{ 1469264886Smav struct ctl_be_block_lun *be_lun; 1470264886Smav union ctl_io *io; 1471264886Smav 1472264886Smav io = beio->io; 1473264886Smav be_lun = beio->lun; 1474264886Smav ctl_free_beio(beio); 1475267641Smav if ((io->io_hdr.flags & CTL_FLAG_ABORT) || 1476267641Smav ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE && 1477267641Smav (io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS)) { 1478267537Smav ctl_data_submit_done(io); 1479264886Smav return; 1480264886Smav } 1481264886Smav 1482264886Smav io->io_hdr.status &= ~CTL_STATUS_MASK; 1483264886Smav io->io_hdr.status |= CTL_STATUS_NONE; 1484264886Smav 1485267877Smav mtx_lock(&be_lun->queue_lock); 1486264886Smav /* 1487264886Smav * XXX KDM make sure that links is okay to use at this point. 1488264886Smav * Otherwise, we either need to add another field to ctl_io_hdr, 1489264886Smav * or deal with resource allocation here. 1490264886Smav */ 1491264886Smav STAILQ_INSERT_TAIL(&be_lun->input_queue, &io->io_hdr, links); 1492267877Smav mtx_unlock(&be_lun->queue_lock); 1493264886Smav 1494264886Smav taskqueue_enqueue(be_lun->io_taskqueue, &be_lun->io_task); 1495264886Smav} 1496264886Smav 1497264886Smavstatic void 1498229997Skenctl_be_block_dispatch(struct ctl_be_block_lun *be_lun, 1499229997Sken union ctl_io *io) 1500229997Sken{ 1501287499Smav struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun; 1502229997Sken struct ctl_be_block_io *beio; 1503229997Sken struct ctl_be_block_softc *softc; 1504267537Smav struct ctl_lba_len_flags *lbalen; 1505267519Smav struct ctl_ptr_len_flags *bptrlen; 1506267519Smav uint64_t len_left, lbas; 1507229997Sken int i; 1508229997Sken 1509229997Sken softc = be_lun->softc; 1510229997Sken 1511229997Sken DPRINTF("entered\n"); 1512229997Sken 1513267537Smav lbalen = ARGS(io); 1514267537Smav if (lbalen->flags & CTL_LLF_WRITE) { 1515267537Smav SDT_PROBE(cbb, kernel, write, start, 0, 0, 0, 0, 0); 1516267537Smav } else { 1517229997Sken SDT_PROBE(cbb, kernel, read, start, 0, 0, 0, 0, 0); 1518229997Sken } 1519229997Sken 1520229997Sken beio = ctl_alloc_beio(softc); 1521229997Sken beio->io = io; 1522229997Sken beio->lun = be_lun; 1523267519Smav bptrlen = PRIV(io); 1524267519Smav bptrlen->ptr = (void *)beio; 1525229997Sken 1526229997Sken switch (io->scsiio.tag_type) { 1527229997Sken case CTL_TAG_ORDERED: 1528229997Sken beio->ds_tag_type = DEVSTAT_TAG_ORDERED; 1529229997Sken break; 1530229997Sken case CTL_TAG_HEAD_OF_QUEUE: 1531229997Sken beio->ds_tag_type = DEVSTAT_TAG_HEAD; 1532229997Sken break; 1533229997Sken case CTL_TAG_UNTAGGED: 1534229997Sken case CTL_TAG_SIMPLE: 1535229997Sken case CTL_TAG_ACA: 1536229997Sken default: 1537229997Sken beio->ds_tag_type = DEVSTAT_TAG_SIMPLE; 1538229997Sken break; 1539229997Sken } 1540229997Sken 1541267537Smav if (lbalen->flags & CTL_LLF_WRITE) { 1542267537Smav beio->bio_cmd = BIO_WRITE; 1543267537Smav beio->ds_trans_type = DEVSTAT_WRITE; 1544267537Smav } else { 1545229997Sken beio->bio_cmd = BIO_READ; 1546229997Sken beio->ds_trans_type = DEVSTAT_READ; 1547229997Sken } 1548229997Sken 1549264886Smav DPRINTF("%s at LBA %jx len %u @%ju\n", 1550229997Sken (beio->bio_cmd == BIO_READ) ? "READ" : "WRITE", 1551267519Smav (uintmax_t)lbalen->lba, lbalen->len, bptrlen->len); 1552267537Smav if (lbalen->flags & CTL_LLF_COMPARE) 1553267537Smav lbas = CTLBLK_HALF_IO_SIZE; 1554267537Smav else 1555267537Smav lbas = CTLBLK_MAX_IO_SIZE; 1556287499Smav lbas = MIN(lbalen->len - bptrlen->len, lbas / cbe_lun->blocksize); 1557287499Smav beio->io_offset = (lbalen->lba + bptrlen->len) * cbe_lun->blocksize; 1558287499Smav beio->io_len = lbas * cbe_lun->blocksize; 1559267519Smav bptrlen->len += lbas; 1560229997Sken 1561264886Smav for (i = 0, len_left = beio->io_len; len_left > 0; i++) { 1562264886Smav KASSERT(i < CTLBLK_MAX_SEGS, ("Too many segs (%d >= %d)", 1563264886Smav i, CTLBLK_MAX_SEGS)); 1564229997Sken 1565229997Sken /* 1566229997Sken * Setup the S/G entry for this chunk. 1567229997Sken */ 1568264886Smav beio->sg_segs[i].len = min(CTLBLK_MAX_SEG, len_left); 1569229997Sken beio->sg_segs[i].addr = uma_zalloc(be_lun->lun_zone, M_WAITOK); 1570229997Sken 1571229997Sken DPRINTF("segment %d addr %p len %zd\n", i, 1572229997Sken beio->sg_segs[i].addr, beio->sg_segs[i].len); 1573229997Sken 1574267537Smav /* Set up second segment for compare operation. */ 1575267537Smav if (lbalen->flags & CTL_LLF_COMPARE) { 1576267537Smav beio->sg_segs[i + CTLBLK_HALF_SEGS].len = 1577267537Smav beio->sg_segs[i].len; 1578267537Smav beio->sg_segs[i + CTLBLK_HALF_SEGS].addr = 1579267537Smav uma_zalloc(be_lun->lun_zone, M_WAITOK); 1580267537Smav } 1581267537Smav 1582229997Sken beio->num_segs++; 1583229997Sken len_left -= beio->sg_segs[i].len; 1584229997Sken } 1585267519Smav if (bptrlen->len < lbalen->len) 1586264886Smav beio->beio_cont = ctl_be_block_next; 1587264886Smav io->scsiio.be_move_done = ctl_be_block_move_done; 1588267537Smav /* For compare we have separate S/G lists for read and datamove. */ 1589267537Smav if (lbalen->flags & CTL_LLF_COMPARE) 1590267537Smav io->scsiio.kern_data_ptr = (uint8_t *)&beio->sg_segs[CTLBLK_HALF_SEGS]; 1591267537Smav else 1592267537Smav io->scsiio.kern_data_ptr = (uint8_t *)beio->sg_segs; 1593264886Smav io->scsiio.kern_data_len = beio->io_len; 1594264886Smav io->scsiio.kern_data_resid = 0; 1595264886Smav io->scsiio.kern_sg_entries = beio->num_segs; 1596264886Smav io->io_hdr.flags |= CTL_FLAG_ALLOCATED | CTL_FLAG_KDPTR_SGLIST; 1597229997Sken 1598229997Sken /* 1599229997Sken * For the read case, we need to read the data into our buffers and 1600229997Sken * then we can send it back to the user. For the write case, we 1601229997Sken * need to get the data from the user first. 1602229997Sken */ 1603229997Sken if (beio->bio_cmd == BIO_READ) { 1604229997Sken SDT_PROBE(cbb, kernel, read, alloc_done, 0, 0, 0, 0, 0); 1605229997Sken be_lun->dispatch(be_lun, beio); 1606229997Sken } else { 1607229997Sken SDT_PROBE(cbb, kernel, write, alloc_done, 0, 0, 0, 0, 0); 1608229997Sken#ifdef CTL_TIME_IO 1609229997Sken getbintime(&io->io_hdr.dma_start_bt); 1610229997Sken#endif 1611229997Sken ctl_datamove(io); 1612229997Sken } 1613229997Sken} 1614229997Sken 1615229997Skenstatic void 1616229997Skenctl_be_block_worker(void *context, int pending) 1617229997Sken{ 1618229997Sken struct ctl_be_block_lun *be_lun; 1619229997Sken struct ctl_be_block_softc *softc; 1620229997Sken union ctl_io *io; 1621229997Sken 1622229997Sken be_lun = (struct ctl_be_block_lun *)context; 1623229997Sken softc = be_lun->softc; 1624229997Sken 1625229997Sken DPRINTF("entered\n"); 1626229997Sken 1627267877Smav mtx_lock(&be_lun->queue_lock); 1628229997Sken for (;;) { 1629229997Sken io = (union ctl_io *)STAILQ_FIRST(&be_lun->datamove_queue); 1630229997Sken if (io != NULL) { 1631229997Sken struct ctl_be_block_io *beio; 1632229997Sken 1633229997Sken DPRINTF("datamove queue\n"); 1634229997Sken 1635229997Sken STAILQ_REMOVE(&be_lun->datamove_queue, &io->io_hdr, 1636229997Sken ctl_io_hdr, links); 1637229997Sken 1638267877Smav mtx_unlock(&be_lun->queue_lock); 1639229997Sken 1640267519Smav beio = (struct ctl_be_block_io *)PRIV(io)->ptr; 1641229997Sken 1642229997Sken be_lun->dispatch(be_lun, beio); 1643229997Sken 1644267877Smav mtx_lock(&be_lun->queue_lock); 1645229997Sken continue; 1646229997Sken } 1647229997Sken io = (union ctl_io *)STAILQ_FIRST(&be_lun->config_write_queue); 1648229997Sken if (io != NULL) { 1649229997Sken DPRINTF("config write queue\n"); 1650229997Sken STAILQ_REMOVE(&be_lun->config_write_queue, &io->io_hdr, 1651229997Sken ctl_io_hdr, links); 1652267877Smav mtx_unlock(&be_lun->queue_lock); 1653229997Sken ctl_be_block_cw_dispatch(be_lun, io); 1654267877Smav mtx_lock(&be_lun->queue_lock); 1655229997Sken continue; 1656229997Sken } 1657275474Smav io = (union ctl_io *)STAILQ_FIRST(&be_lun->config_read_queue); 1658275474Smav if (io != NULL) { 1659275474Smav DPRINTF("config read queue\n"); 1660275474Smav STAILQ_REMOVE(&be_lun->config_read_queue, &io->io_hdr, 1661275474Smav ctl_io_hdr, links); 1662275474Smav mtx_unlock(&be_lun->queue_lock); 1663275474Smav ctl_be_block_cr_dispatch(be_lun, io); 1664275474Smav mtx_lock(&be_lun->queue_lock); 1665275474Smav continue; 1666275474Smav } 1667229997Sken io = (union ctl_io *)STAILQ_FIRST(&be_lun->input_queue); 1668229997Sken if (io != NULL) { 1669229997Sken DPRINTF("input queue\n"); 1670229997Sken 1671229997Sken STAILQ_REMOVE(&be_lun->input_queue, &io->io_hdr, 1672229997Sken ctl_io_hdr, links); 1673267877Smav mtx_unlock(&be_lun->queue_lock); 1674229997Sken 1675229997Sken /* 1676229997Sken * We must drop the lock, since this routine and 1677229997Sken * its children may sleep. 1678229997Sken */ 1679229997Sken ctl_be_block_dispatch(be_lun, io); 1680229997Sken 1681267877Smav mtx_lock(&be_lun->queue_lock); 1682229997Sken continue; 1683229997Sken } 1684229997Sken 1685229997Sken /* 1686229997Sken * If we get here, there is no work left in the queues, so 1687229997Sken * just break out and let the task queue go to sleep. 1688229997Sken */ 1689229997Sken break; 1690229997Sken } 1691267877Smav mtx_unlock(&be_lun->queue_lock); 1692229997Sken} 1693229997Sken 1694229997Sken/* 1695229997Sken * Entry point from CTL to the backend for I/O. We queue everything to a 1696229997Sken * work thread, so this just puts the I/O on a queue and wakes up the 1697229997Sken * thread. 1698229997Sken */ 1699229997Skenstatic int 1700229997Skenctl_be_block_submit(union ctl_io *io) 1701229997Sken{ 1702229997Sken struct ctl_be_block_lun *be_lun; 1703287499Smav struct ctl_be_lun *cbe_lun; 1704229997Sken 1705229997Sken DPRINTF("entered\n"); 1706229997Sken 1707287499Smav cbe_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[ 1708229997Sken CTL_PRIV_BACKEND_LUN].ptr; 1709287499Smav be_lun = (struct ctl_be_block_lun *)cbe_lun->be_lun; 1710229997Sken 1711229997Sken /* 1712229997Sken * Make sure we only get SCSI I/O. 1713229997Sken */ 1714229997Sken KASSERT(io->io_hdr.io_type == CTL_IO_SCSI, ("Non-SCSI I/O (type " 1715229997Sken "%#x) encountered", io->io_hdr.io_type)); 1716229997Sken 1717267519Smav PRIV(io)->len = 0; 1718267519Smav 1719267877Smav mtx_lock(&be_lun->queue_lock); 1720229997Sken /* 1721229997Sken * XXX KDM make sure that links is okay to use at this point. 1722229997Sken * Otherwise, we either need to add another field to ctl_io_hdr, 1723229997Sken * or deal with resource allocation here. 1724229997Sken */ 1725229997Sken STAILQ_INSERT_TAIL(&be_lun->input_queue, &io->io_hdr, links); 1726267877Smav mtx_unlock(&be_lun->queue_lock); 1727229997Sken taskqueue_enqueue(be_lun->io_taskqueue, &be_lun->io_task); 1728229997Sken 1729267514Smav return (CTL_RETVAL_COMPLETE); 1730229997Sken} 1731229997Sken 1732229997Skenstatic int 1733229997Skenctl_be_block_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, 1734229997Sken int flag, struct thread *td) 1735229997Sken{ 1736229997Sken struct ctl_be_block_softc *softc; 1737229997Sken int error; 1738229997Sken 1739229997Sken softc = &backend_block_softc; 1740229997Sken 1741229997Sken error = 0; 1742229997Sken 1743229997Sken switch (cmd) { 1744229997Sken case CTL_LUN_REQ: { 1745229997Sken struct ctl_lun_req *lun_req; 1746229997Sken 1747229997Sken lun_req = (struct ctl_lun_req *)addr; 1748229997Sken 1749229997Sken switch (lun_req->reqtype) { 1750229997Sken case CTL_LUNREQ_CREATE: 1751229997Sken error = ctl_be_block_create(softc, lun_req); 1752229997Sken break; 1753229997Sken case CTL_LUNREQ_RM: 1754229997Sken error = ctl_be_block_rm(softc, lun_req); 1755229997Sken break; 1756232604Strasz case CTL_LUNREQ_MODIFY: 1757232604Strasz error = ctl_be_block_modify(softc, lun_req); 1758232604Strasz break; 1759229997Sken default: 1760229997Sken lun_req->status = CTL_LUN_ERROR; 1761229997Sken snprintf(lun_req->error_str, sizeof(lun_req->error_str), 1762272911Smav "invalid LUN request type %d", 1763229997Sken lun_req->reqtype); 1764229997Sken break; 1765229997Sken } 1766229997Sken break; 1767229997Sken } 1768229997Sken default: 1769229997Sken error = ENOTTY; 1770229997Sken break; 1771229997Sken } 1772229997Sken 1773229997Sken return (error); 1774229997Sken} 1775229997Sken 1776229997Skenstatic int 1777229997Skenctl_be_block_open_file(struct ctl_be_block_lun *be_lun, struct ctl_lun_req *req) 1778229997Sken{ 1779287499Smav struct ctl_be_lun *cbe_lun; 1780229997Sken struct ctl_be_block_filedata *file_data; 1781229997Sken struct ctl_lun_create_params *params; 1782275865Smav char *value; 1783229997Sken struct vattr vattr; 1784275865Smav off_t ps, pss, po, pos, us, uss, uo, uos; 1785229997Sken int error; 1786229997Sken 1787229997Sken error = 0; 1788287499Smav cbe_lun = &be_lun->cbe_lun; 1789229997Sken file_data = &be_lun->backend.file; 1790272911Smav params = &be_lun->params; 1791229997Sken 1792229997Sken be_lun->dev_type = CTL_BE_BLOCK_FILE; 1793229997Sken be_lun->dispatch = ctl_be_block_dispatch_file; 1794229997Sken be_lun->lun_flush = ctl_be_block_flush_file; 1795275474Smav be_lun->get_lba_status = ctl_be_block_gls_file; 1796275481Smav be_lun->getattr = ctl_be_block_getattr_file; 1797287499Smav be_lun->unmap = NULL; 1798287499Smav cbe_lun->flags &= ~CTL_LUN_FLAG_UNMAP; 1799229997Sken 1800229997Sken error = VOP_GETATTR(be_lun->vn, &vattr, curthread->td_ucred); 1801229997Sken if (error != 0) { 1802229997Sken snprintf(req->error_str, sizeof(req->error_str), 1803229997Sken "error calling VOP_GETATTR() for file %s", 1804229997Sken be_lun->dev_path); 1805229997Sken return (error); 1806229997Sken } 1807229997Sken 1808229997Sken /* 1809229997Sken * Verify that we have the ability to upgrade to exclusive 1810229997Sken * access on this file so we can trap errors at open instead 1811229997Sken * of reporting them during first access. 1812229997Sken */ 1813229997Sken if (VOP_ISLOCKED(be_lun->vn) != LK_EXCLUSIVE) { 1814229997Sken vn_lock(be_lun->vn, LK_UPGRADE | LK_RETRY); 1815229997Sken if (be_lun->vn->v_iflag & VI_DOOMED) { 1816229997Sken error = EBADF; 1817229997Sken snprintf(req->error_str, sizeof(req->error_str), 1818229997Sken "error locking file %s", be_lun->dev_path); 1819229997Sken return (error); 1820229997Sken } 1821229997Sken } 1822229997Sken 1823229997Sken file_data->cred = crhold(curthread->td_ucred); 1824232604Strasz if (params->lun_size_bytes != 0) 1825232604Strasz be_lun->size_bytes = params->lun_size_bytes; 1826232604Strasz else 1827232604Strasz be_lun->size_bytes = vattr.va_size; 1828229997Sken 1829229997Sken /* 1830273029Smav * For files we can use any logical block size. Prefer 512 bytes 1831273029Smav * for compatibility reasons. If file's vattr.va_blocksize 1832273029Smav * (preferred I/O block size) is bigger and multiple to chosen 1833273029Smav * logical block size -- report it as physical block size. 1834229997Sken */ 1835229997Sken if (params->blocksize_bytes != 0) 1836287499Smav cbe_lun->blocksize = params->blocksize_bytes; 1837229997Sken else 1838287499Smav cbe_lun->blocksize = 512; 1839287499Smav be_lun->size_blocks = be_lun->size_bytes / cbe_lun->blocksize; 1840287499Smav cbe_lun->maxlba = (be_lun->size_blocks == 0) ? 1841287499Smav 0 : (be_lun->size_blocks - 1); 1842275865Smav 1843275865Smav us = ps = vattr.va_blocksize; 1844275865Smav uo = po = 0; 1845275865Smav 1846287499Smav value = ctl_get_opt(&cbe_lun->options, "pblocksize"); 1847275865Smav if (value != NULL) 1848275865Smav ctl_expand_number(value, &ps); 1849287499Smav value = ctl_get_opt(&cbe_lun->options, "pblockoffset"); 1850275865Smav if (value != NULL) 1851275865Smav ctl_expand_number(value, &po); 1852287499Smav pss = ps / cbe_lun->blocksize; 1853287499Smav pos = po / cbe_lun->blocksize; 1854287499Smav if ((pss > 0) && (pss * cbe_lun->blocksize == ps) && (pss >= pos) && 1855287499Smav ((pss & (pss - 1)) == 0) && (pos * cbe_lun->blocksize == po)) { 1856287499Smav cbe_lun->pblockexp = fls(pss) - 1; 1857287499Smav cbe_lun->pblockoff = (pss - pos) % pss; 1858273029Smav } 1859229997Sken 1860287499Smav value = ctl_get_opt(&cbe_lun->options, "ublocksize"); 1861275865Smav if (value != NULL) 1862275865Smav ctl_expand_number(value, &us); 1863287499Smav value = ctl_get_opt(&cbe_lun->options, "ublockoffset"); 1864275865Smav if (value != NULL) 1865275865Smav ctl_expand_number(value, &uo); 1866287499Smav uss = us / cbe_lun->blocksize; 1867287499Smav uos = uo / cbe_lun->blocksize; 1868287499Smav if ((uss > 0) && (uss * cbe_lun->blocksize == us) && (uss >= uos) && 1869287499Smav ((uss & (uss - 1)) == 0) && (uos * cbe_lun->blocksize == uo)) { 1870287499Smav cbe_lun->ublockexp = fls(uss) - 1; 1871287499Smav cbe_lun->ublockoff = (uss - uos) % uss; 1872275865Smav } 1873275865Smav 1874229997Sken /* 1875229997Sken * Sanity check. The media size has to be at least one 1876229997Sken * sector long. 1877229997Sken */ 1878287499Smav if (be_lun->size_bytes < cbe_lun->blocksize) { 1879229997Sken error = EINVAL; 1880229997Sken snprintf(req->error_str, sizeof(req->error_str), 1881229997Sken "file %s size %ju < block size %u", be_lun->dev_path, 1882287499Smav (uintmax_t)be_lun->size_bytes, cbe_lun->blocksize); 1883229997Sken } 1884275920Smav 1885287499Smav cbe_lun->opttxferlen = CTLBLK_MAX_IO_SIZE / cbe_lun->blocksize; 1886229997Sken return (error); 1887229997Sken} 1888229997Sken 1889229997Skenstatic int 1890229997Skenctl_be_block_open_dev(struct ctl_be_block_lun *be_lun, struct ctl_lun_req *req) 1891229997Sken{ 1892287499Smav struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun; 1893229997Sken struct ctl_lun_create_params *params; 1894287664Smav struct cdevsw *csw; 1895229997Sken struct cdev *dev; 1896275865Smav char *value; 1897287664Smav int error, atomic, maxio, ref, unmap, tmp; 1898287221Smav off_t ps, pss, po, pos, us, uss, uo, uos, otmp; 1899229997Sken 1900272911Smav params = &be_lun->params; 1901229997Sken 1902229997Sken be_lun->dev_type = CTL_BE_BLOCK_DEV; 1903287664Smav csw = devvn_refthread(be_lun->vn, &dev, &ref); 1904287664Smav if (csw == NULL) 1905287664Smav return (ENXIO); 1906287664Smav if (strcmp(csw->d_name, "zvol") == 0) { 1907269123Smav be_lun->dispatch = ctl_be_block_dispatch_zvol; 1908275474Smav be_lun->get_lba_status = ctl_be_block_gls_zvol; 1909275920Smav atomic = maxio = CTLBLK_MAX_IO_SIZE; 1910275920Smav } else { 1911269123Smav be_lun->dispatch = ctl_be_block_dispatch_dev; 1912287499Smav be_lun->get_lba_status = NULL; 1913275920Smav atomic = 0; 1914287664Smav maxio = dev->si_iosize_max; 1915275920Smav if (maxio <= 0) 1916275920Smav maxio = DFLTPHYS; 1917275920Smav if (maxio > CTLBLK_MAX_IO_SIZE) 1918275920Smav maxio = CTLBLK_MAX_IO_SIZE; 1919275920Smav } 1920269123Smav be_lun->lun_flush = ctl_be_block_flush_dev; 1921274154Smav be_lun->getattr = ctl_be_block_getattr_dev; 1922287499Smav be_lun->unmap = ctl_be_block_unmap_dev; 1923229997Sken 1924287664Smav if (!csw->d_ioctl) { 1925287664Smav dev_relthread(dev, ref); 1926229997Sken snprintf(req->error_str, sizeof(req->error_str), 1927287664Smav "no d_ioctl for device %s!", be_lun->dev_path); 1928229997Sken return (ENODEV); 1929229997Sken } 1930229997Sken 1931287664Smav error = csw->d_ioctl(dev, DIOCGSECTORSIZE, (caddr_t)&tmp, FREAD, 1932229997Sken curthread); 1933229997Sken if (error) { 1934287664Smav dev_relthread(dev, ref); 1935229997Sken snprintf(req->error_str, sizeof(req->error_str), 1936272911Smav "error %d returned for DIOCGSECTORSIZE ioctl " 1937272911Smav "on %s!", error, be_lun->dev_path); 1938229997Sken return (error); 1939229997Sken } 1940229997Sken 1941229997Sken /* 1942229997Sken * If the user has asked for a blocksize that is greater than the 1943229997Sken * backing device's blocksize, we can do it only if the blocksize 1944229997Sken * the user is asking for is an even multiple of the underlying 1945229997Sken * device's blocksize. 1946229997Sken */ 1947286811Smav if ((params->blocksize_bytes != 0) && 1948286811Smav (params->blocksize_bytes >= tmp)) { 1949286811Smav if (params->blocksize_bytes % tmp == 0) { 1950287499Smav cbe_lun->blocksize = params->blocksize_bytes; 1951229997Sken } else { 1952287664Smav dev_relthread(dev, ref); 1953229997Sken snprintf(req->error_str, sizeof(req->error_str), 1954272911Smav "requested blocksize %u is not an even " 1955229997Sken "multiple of backing device blocksize %u", 1956287221Smav params->blocksize_bytes, tmp); 1957229997Sken return (EINVAL); 1958229997Sken } 1959286811Smav } else if (params->blocksize_bytes != 0) { 1960287664Smav dev_relthread(dev, ref); 1961229997Sken snprintf(req->error_str, sizeof(req->error_str), 1962272911Smav "requested blocksize %u < backing device " 1963287221Smav "blocksize %u", params->blocksize_bytes, tmp); 1964229997Sken return (EINVAL); 1965286811Smav } else 1966287499Smav cbe_lun->blocksize = tmp; 1967229997Sken 1968287664Smav error = csw->d_ioctl(dev, DIOCGMEDIASIZE, (caddr_t)&otmp, FREAD, 1969287664Smav curthread); 1970229997Sken if (error) { 1971287664Smav dev_relthread(dev, ref); 1972229997Sken snprintf(req->error_str, sizeof(req->error_str), 1973272911Smav "error %d returned for DIOCGMEDIASIZE " 1974272911Smav " ioctl on %s!", error, 1975232604Strasz be_lun->dev_path); 1976229997Sken return (error); 1977229997Sken } 1978229997Sken 1979232604Strasz if (params->lun_size_bytes != 0) { 1980287221Smav if (params->lun_size_bytes > otmp) { 1981287664Smav dev_relthread(dev, ref); 1982232604Strasz snprintf(req->error_str, sizeof(req->error_str), 1983272911Smav "requested LUN size %ju > backing device " 1984272911Smav "size %ju", 1985232604Strasz (uintmax_t)params->lun_size_bytes, 1986287221Smav (uintmax_t)otmp); 1987232604Strasz return (EINVAL); 1988232604Strasz } 1989232604Strasz 1990232604Strasz be_lun->size_bytes = params->lun_size_bytes; 1991286811Smav } else 1992287221Smav be_lun->size_bytes = otmp; 1993287499Smav be_lun->size_blocks = be_lun->size_bytes / cbe_lun->blocksize; 1994287499Smav cbe_lun->maxlba = (be_lun->size_blocks == 0) ? 1995287499Smav 0 : (be_lun->size_blocks - 1); 1996232604Strasz 1997287664Smav error = csw->d_ioctl(dev, DIOCGSTRIPESIZE, (caddr_t)&ps, FREAD, 1998287664Smav curthread); 1999264191Smav if (error) 2000264191Smav ps = po = 0; 2001264191Smav else { 2002287664Smav error = csw->d_ioctl(dev, DIOCGSTRIPEOFFSET, (caddr_t)&po, 2003287664Smav FREAD, curthread); 2004264191Smav if (error) 2005264191Smav po = 0; 2006264191Smav } 2007275865Smav us = ps; 2008275865Smav uo = po; 2009275865Smav 2010287499Smav value = ctl_get_opt(&cbe_lun->options, "pblocksize"); 2011275865Smav if (value != NULL) 2012275865Smav ctl_expand_number(value, &ps); 2013287499Smav value = ctl_get_opt(&cbe_lun->options, "pblockoffset"); 2014275865Smav if (value != NULL) 2015275865Smav ctl_expand_number(value, &po); 2016287499Smav pss = ps / cbe_lun->blocksize; 2017287499Smav pos = po / cbe_lun->blocksize; 2018287499Smav if ((pss > 0) && (pss * cbe_lun->blocksize == ps) && (pss >= pos) && 2019287499Smav ((pss & (pss - 1)) == 0) && (pos * cbe_lun->blocksize == po)) { 2020287499Smav cbe_lun->pblockexp = fls(pss) - 1; 2021287499Smav cbe_lun->pblockoff = (pss - pos) % pss; 2022264191Smav } 2023264191Smav 2024287499Smav value = ctl_get_opt(&cbe_lun->options, "ublocksize"); 2025275865Smav if (value != NULL) 2026275865Smav ctl_expand_number(value, &us); 2027287499Smav value = ctl_get_opt(&cbe_lun->options, "ublockoffset"); 2028275865Smav if (value != NULL) 2029275865Smav ctl_expand_number(value, &uo); 2030287499Smav uss = us / cbe_lun->blocksize; 2031287499Smav uos = uo / cbe_lun->blocksize; 2032287499Smav if ((uss > 0) && (uss * cbe_lun->blocksize == us) && (uss >= uos) && 2033287499Smav ((uss & (uss - 1)) == 0) && (uos * cbe_lun->blocksize == uo)) { 2034287499Smav cbe_lun->ublockexp = fls(uss) - 1; 2035287499Smav cbe_lun->ublockoff = (uss - uos) % uss; 2036275865Smav } 2037275865Smav 2038287499Smav cbe_lun->atomicblock = atomic / cbe_lun->blocksize; 2039287499Smav cbe_lun->opttxferlen = maxio / cbe_lun->blocksize; 2040278672Smav 2041278672Smav if (be_lun->dispatch == ctl_be_block_dispatch_zvol) { 2042278672Smav unmap = 1; 2043278672Smav } else { 2044278672Smav struct diocgattr_arg arg; 2045278672Smav 2046278672Smav strlcpy(arg.name, "GEOM::candelete", sizeof(arg.name)); 2047278672Smav arg.len = sizeof(arg.value.i); 2048287664Smav error = csw->d_ioctl(dev, DIOCGATTR, (caddr_t)&arg, FREAD, 2049287664Smav curthread); 2050278672Smav unmap = (error == 0) ? arg.value.i : 0; 2051278672Smav } 2052287499Smav value = ctl_get_opt(&cbe_lun->options, "unmap"); 2053278672Smav if (value != NULL) 2054278672Smav unmap = (strcmp(value, "on") == 0); 2055278672Smav if (unmap) 2056287499Smav cbe_lun->flags |= CTL_LUN_FLAG_UNMAP; 2057287499Smav else 2058287499Smav cbe_lun->flags &= ~CTL_LUN_FLAG_UNMAP; 2059278672Smav 2060287664Smav dev_relthread(dev, ref); 2061229997Sken return (0); 2062229997Sken} 2063229997Sken 2064229997Skenstatic int 2065229997Skenctl_be_block_close(struct ctl_be_block_lun *be_lun) 2066229997Sken{ 2067287499Smav struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun; 2068287499Smav int flags; 2069287499Smav 2070229997Sken if (be_lun->vn) { 2071287499Smav flags = FREAD; 2072287499Smav if ((cbe_lun->flags & CTL_LUN_FLAG_READONLY) == 0) 2073287499Smav flags |= FWRITE; 2074229997Sken (void)vn_close(be_lun->vn, flags, NOCRED, curthread); 2075229997Sken be_lun->vn = NULL; 2076229997Sken 2077229997Sken switch (be_lun->dev_type) { 2078229997Sken case CTL_BE_BLOCK_DEV: 2079229997Sken break; 2080229997Sken case CTL_BE_BLOCK_FILE: 2081229997Sken if (be_lun->backend.file.cred != NULL) { 2082229997Sken crfree(be_lun->backend.file.cred); 2083229997Sken be_lun->backend.file.cred = NULL; 2084229997Sken } 2085229997Sken break; 2086229997Sken case CTL_BE_BLOCK_NONE: 2087258871Strasz break; 2088229997Sken default: 2089229997Sken panic("Unexpected backend type."); 2090229997Sken break; 2091229997Sken } 2092272911Smav be_lun->dev_type = CTL_BE_BLOCK_NONE; 2093229997Sken } 2094229997Sken return (0); 2095229997Sken} 2096229997Sken 2097229997Skenstatic int 2098229997Skenctl_be_block_open(struct ctl_be_block_softc *softc, 2099287499Smav struct ctl_be_block_lun *be_lun, struct ctl_lun_req *req) 2100229997Sken{ 2101287499Smav struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun; 2102229997Sken struct nameidata nd; 2103287499Smav char *value; 2104287499Smav int error, flags; 2105229997Sken 2106229997Sken error = 0; 2107229997Sken if (rootvnode == NULL) { 2108229997Sken snprintf(req->error_str, sizeof(req->error_str), 2109272911Smav "Root filesystem is not mounted"); 2110229997Sken return (1); 2111229997Sken } 2112285391Smjg pwd_ensure_dirs(); 2113229997Sken 2114287499Smav value = ctl_get_opt(&cbe_lun->options, "file"); 2115287499Smav if (value == NULL) { 2116287499Smav snprintf(req->error_str, sizeof(req->error_str), 2117287499Smav "no file argument specified"); 2118287499Smav return (1); 2119287499Smav } 2120287499Smav free(be_lun->dev_path, M_CTLBLK); 2121287499Smav be_lun->dev_path = strdup(value, M_CTLBLK); 2122287499Smav 2123287499Smav flags = FREAD; 2124287499Smav value = ctl_get_opt(&cbe_lun->options, "readonly"); 2125287499Smav if (value == NULL || strcmp(value, "on") != 0) 2126287499Smav flags |= FWRITE; 2127287499Smav 2128287499Smavagain: 2129229997Sken NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, be_lun->dev_path, curthread); 2130229997Sken error = vn_open(&nd, &flags, 0, NULL); 2131287499Smav if ((error == EROFS || error == EACCES) && (flags & FWRITE)) { 2132287499Smav flags &= ~FWRITE; 2133287499Smav goto again; 2134287499Smav } 2135229997Sken if (error) { 2136229997Sken /* 2137229997Sken * This is the only reasonable guess we can make as far as 2138229997Sken * path if the user doesn't give us a fully qualified path. 2139229997Sken * If they want to specify a file, they need to specify the 2140229997Sken * full path. 2141229997Sken */ 2142229997Sken if (be_lun->dev_path[0] != '/') { 2143229997Sken char *dev_name; 2144229997Sken 2145287499Smav asprintf(&dev_name, M_CTLBLK, "/dev/%s", 2146287499Smav be_lun->dev_path); 2147287499Smav free(be_lun->dev_path, M_CTLBLK); 2148287499Smav be_lun->dev_path = dev_name; 2149287499Smav goto again; 2150229997Sken } 2151229997Sken snprintf(req->error_str, sizeof(req->error_str), 2152272911Smav "error opening %s: %d", be_lun->dev_path, error); 2153229997Sken return (error); 2154229997Sken } 2155287499Smav if (flags & FWRITE) 2156287499Smav cbe_lun->flags &= ~CTL_LUN_FLAG_READONLY; 2157287499Smav else 2158287499Smav cbe_lun->flags |= CTL_LUN_FLAG_READONLY; 2159229997Sken 2160229997Sken NDFREE(&nd, NDF_ONLY_PNBUF); 2161229997Sken be_lun->vn = nd.ni_vp; 2162229997Sken 2163229997Sken /* We only support disks and files. */ 2164229997Sken if (vn_isdisk(be_lun->vn, &error)) { 2165229997Sken error = ctl_be_block_open_dev(be_lun, req); 2166229997Sken } else if (be_lun->vn->v_type == VREG) { 2167229997Sken error = ctl_be_block_open_file(be_lun, req); 2168229997Sken } else { 2169229997Sken error = EINVAL; 2170229997Sken snprintf(req->error_str, sizeof(req->error_str), 2171258871Strasz "%s is not a disk or plain file", be_lun->dev_path); 2172229997Sken } 2173229997Sken VOP_UNLOCK(be_lun->vn, 0); 2174229997Sken 2175286811Smav if (error != 0) 2176229997Sken ctl_be_block_close(be_lun); 2177287499Smav cbe_lun->serseq = CTL_LUN_SERSEQ_OFF; 2178287499Smav if (be_lun->dispatch != ctl_be_block_dispatch_dev) 2179287499Smav cbe_lun->serseq = CTL_LUN_SERSEQ_READ; 2180287499Smav value = ctl_get_opt(&cbe_lun->options, "serseq"); 2181287499Smav if (value != NULL && strcmp(value, "on") == 0) 2182287499Smav cbe_lun->serseq = CTL_LUN_SERSEQ_ON; 2183287499Smav else if (value != NULL && strcmp(value, "read") == 0) 2184287499Smav cbe_lun->serseq = CTL_LUN_SERSEQ_READ; 2185287499Smav else if (value != NULL && strcmp(value, "off") == 0) 2186287499Smav cbe_lun->serseq = CTL_LUN_SERSEQ_OFF; 2187229997Sken return (0); 2188229997Sken} 2189229997Sken 2190229997Skenstatic int 2191229997Skenctl_be_block_create(struct ctl_be_block_softc *softc, struct ctl_lun_req *req) 2192229997Sken{ 2193287499Smav struct ctl_be_lun *cbe_lun; 2194229997Sken struct ctl_be_block_lun *be_lun; 2195229997Sken struct ctl_lun_create_params *params; 2196267481Smav char num_thread_str[16]; 2197229997Sken char tmpstr[32]; 2198267481Smav char *value; 2199278672Smav int retval, num_threads; 2200267481Smav int tmp_num_threads; 2201229997Sken 2202229997Sken params = &req->reqdata.create; 2203229997Sken retval = 0; 2204272911Smav req->status = CTL_LUN_OK; 2205229997Sken 2206229997Sken be_lun = malloc(sizeof(*be_lun), M_CTLBLK, M_ZERO | M_WAITOK); 2207287499Smav cbe_lun = &be_lun->cbe_lun; 2208287499Smav cbe_lun->be_lun = be_lun; 2209272911Smav be_lun->params = req->reqdata.create; 2210229997Sken be_lun->softc = softc; 2211229997Sken STAILQ_INIT(&be_lun->input_queue); 2212275474Smav STAILQ_INIT(&be_lun->config_read_queue); 2213229997Sken STAILQ_INIT(&be_lun->config_write_queue); 2214229997Sken STAILQ_INIT(&be_lun->datamove_queue); 2215229997Sken sprintf(be_lun->lunname, "cblk%d", softc->num_luns); 2216267877Smav mtx_init(&be_lun->io_lock, "cblk io lock", NULL, MTX_DEF); 2217267877Smav mtx_init(&be_lun->queue_lock, "cblk queue lock", NULL, MTX_DEF); 2218287499Smav ctl_init_opts(&cbe_lun->options, 2219268280Smav req->num_be_args, req->kern_be_args); 2220264886Smav be_lun->lun_zone = uma_zcreate(be_lun->lunname, CTLBLK_MAX_SEG, 2221256995Smav NULL, NULL, NULL, NULL, /*align*/ 0, /*flags*/0); 2222229997Sken if (be_lun->lun_zone == NULL) { 2223229997Sken snprintf(req->error_str, sizeof(req->error_str), 2224272911Smav "error allocating UMA zone"); 2225229997Sken goto bailout_error; 2226229997Sken } 2227229997Sken 2228229997Sken if (params->flags & CTL_LUN_FLAG_DEV_TYPE) 2229287499Smav cbe_lun->lun_type = params->device_type; 2230229997Sken else 2231287499Smav cbe_lun->lun_type = T_DIRECT; 2232287499Smav be_lun->flags = CTL_BE_BLOCK_LUN_UNCONFIGURED; 2233287621Smav cbe_lun->flags = 0; 2234287621Smav value = ctl_get_opt(&cbe_lun->options, "ha_role"); 2235287621Smav if (value != NULL) { 2236287621Smav if (strcmp(value, "primary") == 0) 2237287621Smav cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY; 2238287621Smav } else if (control_softc->flags & CTL_FLAG_ACTIVE_SHELF) 2239287621Smav cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY; 2240229997Sken 2241287499Smav if (cbe_lun->lun_type == T_DIRECT) { 2242286811Smav be_lun->size_bytes = params->lun_size_bytes; 2243286811Smav if (params->blocksize_bytes != 0) 2244287499Smav cbe_lun->blocksize = params->blocksize_bytes; 2245286811Smav else 2246287499Smav cbe_lun->blocksize = 512; 2247287499Smav be_lun->size_blocks = be_lun->size_bytes / cbe_lun->blocksize; 2248287499Smav cbe_lun->maxlba = (be_lun->size_blocks == 0) ? 2249287499Smav 0 : (be_lun->size_blocks - 1); 2250229997Sken 2251287621Smav if ((cbe_lun->flags & CTL_LUN_FLAG_PRIMARY) || 2252287621Smav control_softc->ha_mode == CTL_HA_MODE_SER_ONLY) { 2253287621Smav retval = ctl_be_block_open(softc, be_lun, req); 2254287621Smav if (retval != 0) { 2255287621Smav retval = 0; 2256287621Smav req->status = CTL_LUN_WARNING; 2257287621Smav } 2258229997Sken } 2259287499Smav num_threads = cbb_num_threads; 2260229997Sken } else { 2261229997Sken num_threads = 1; 2262229997Sken } 2263229997Sken 2264229997Sken /* 2265229997Sken * XXX This searching loop might be refactored to be combined with 2266229997Sken * the loop above, 2267229997Sken */ 2268287499Smav value = ctl_get_opt(&cbe_lun->options, "num_threads"); 2269267481Smav if (value != NULL) { 2270267481Smav tmp_num_threads = strtol(value, NULL, 0); 2271229997Sken 2272267481Smav /* 2273267481Smav * We don't let the user specify less than one 2274267481Smav * thread, but hope he's clueful enough not to 2275267481Smav * specify 1000 threads. 2276267481Smav */ 2277267481Smav if (tmp_num_threads < 1) { 2278267481Smav snprintf(req->error_str, sizeof(req->error_str), 2279272911Smav "invalid number of threads %s", 2280272911Smav num_thread_str); 2281267481Smav goto bailout_error; 2282229997Sken } 2283267481Smav num_threads = tmp_num_threads; 2284229997Sken } 2285229997Sken 2286272911Smav if (be_lun->vn == NULL) 2287287499Smav cbe_lun->flags |= CTL_LUN_FLAG_OFFLINE; 2288229997Sken /* Tell the user the blocksize we ended up using */ 2289272911Smav params->lun_size_bytes = be_lun->size_bytes; 2290287499Smav params->blocksize_bytes = cbe_lun->blocksize; 2291229997Sken if (params->flags & CTL_LUN_FLAG_ID_REQ) { 2292287499Smav cbe_lun->req_lun_id = params->req_lun_id; 2293287499Smav cbe_lun->flags |= CTL_LUN_FLAG_ID_REQ; 2294229997Sken } else 2295287499Smav cbe_lun->req_lun_id = 0; 2296229997Sken 2297287499Smav cbe_lun->lun_shutdown = ctl_be_block_lun_shutdown; 2298287499Smav cbe_lun->lun_config_status = ctl_be_block_lun_config_status; 2299287499Smav cbe_lun->be = &ctl_be_block_driver; 2300229997Sken 2301229997Sken if ((params->flags & CTL_LUN_FLAG_SERIAL_NUM) == 0) { 2302229997Sken snprintf(tmpstr, sizeof(tmpstr), "MYSERIAL%4d", 2303229997Sken softc->num_luns); 2304287499Smav strncpy((char *)cbe_lun->serial_num, tmpstr, 2305287499Smav MIN(sizeof(cbe_lun->serial_num), sizeof(tmpstr))); 2306229997Sken 2307229997Sken /* Tell the user what we used for a serial number */ 2308229997Sken strncpy((char *)params->serial_num, tmpstr, 2309275953Smav MIN(sizeof(params->serial_num), sizeof(tmpstr))); 2310229997Sken } else { 2311287499Smav strncpy((char *)cbe_lun->serial_num, params->serial_num, 2312287499Smav MIN(sizeof(cbe_lun->serial_num), 2313229997Sken sizeof(params->serial_num))); 2314229997Sken } 2315229997Sken if ((params->flags & CTL_LUN_FLAG_DEVID) == 0) { 2316229997Sken snprintf(tmpstr, sizeof(tmpstr), "MYDEVID%4d", softc->num_luns); 2317287499Smav strncpy((char *)cbe_lun->device_id, tmpstr, 2318287499Smav MIN(sizeof(cbe_lun->device_id), sizeof(tmpstr))); 2319229997Sken 2320229997Sken /* Tell the user what we used for a device ID */ 2321229997Sken strncpy((char *)params->device_id, tmpstr, 2322275953Smav MIN(sizeof(params->device_id), sizeof(tmpstr))); 2323229997Sken } else { 2324287499Smav strncpy((char *)cbe_lun->device_id, params->device_id, 2325287499Smav MIN(sizeof(cbe_lun->device_id), 2326275953Smav sizeof(params->device_id))); 2327229997Sken } 2328229997Sken 2329229997Sken TASK_INIT(&be_lun->io_task, /*priority*/0, ctl_be_block_worker, be_lun); 2330229997Sken 2331229997Sken be_lun->io_taskqueue = taskqueue_create(be_lun->lunname, M_WAITOK, 2332229997Sken taskqueue_thread_enqueue, /*context*/&be_lun->io_taskqueue); 2333229997Sken 2334229997Sken if (be_lun->io_taskqueue == NULL) { 2335229997Sken snprintf(req->error_str, sizeof(req->error_str), 2336272911Smav "unable to create taskqueue"); 2337229997Sken goto bailout_error; 2338229997Sken } 2339229997Sken 2340229997Sken /* 2341229997Sken * Note that we start the same number of threads by default for 2342229997Sken * both the file case and the block device case. For the file 2343229997Sken * case, we need multiple threads to allow concurrency, because the 2344229997Sken * vnode interface is designed to be a blocking interface. For the 2345229997Sken * block device case, ZFS zvols at least will block the caller's 2346229997Sken * context in many instances, and so we need multiple threads to 2347229997Sken * overcome that problem. Other block devices don't need as many 2348229997Sken * threads, but they shouldn't cause too many problems. 2349229997Sken * 2350229997Sken * If the user wants to just have a single thread for a block 2351229997Sken * device, he can specify that when the LUN is created, or change 2352229997Sken * the tunable/sysctl to alter the default number of threads. 2353229997Sken */ 2354229997Sken retval = taskqueue_start_threads(&be_lun->io_taskqueue, 2355229997Sken /*num threads*/num_threads, 2356229997Sken /*priority*/PWAIT, 2357229997Sken /*thread name*/ 2358229997Sken "%s taskq", be_lun->lunname); 2359229997Sken 2360229997Sken if (retval != 0) 2361229997Sken goto bailout_error; 2362229997Sken 2363229997Sken be_lun->num_threads = num_threads; 2364229997Sken 2365229997Sken mtx_lock(&softc->lock); 2366229997Sken softc->num_luns++; 2367229997Sken STAILQ_INSERT_TAIL(&softc->lun_list, be_lun, links); 2368229997Sken 2369229997Sken mtx_unlock(&softc->lock); 2370229997Sken 2371287499Smav retval = ctl_add_lun(&be_lun->cbe_lun); 2372229997Sken if (retval != 0) { 2373229997Sken mtx_lock(&softc->lock); 2374229997Sken STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_block_lun, 2375229997Sken links); 2376229997Sken softc->num_luns--; 2377229997Sken mtx_unlock(&softc->lock); 2378229997Sken snprintf(req->error_str, sizeof(req->error_str), 2379272911Smav "ctl_add_lun() returned error %d, see dmesg for " 2380272911Smav "details", retval); 2381229997Sken retval = 0; 2382229997Sken goto bailout_error; 2383229997Sken } 2384229997Sken 2385229997Sken mtx_lock(&softc->lock); 2386229997Sken 2387229997Sken /* 2388229997Sken * Tell the config_status routine that we're waiting so it won't 2389229997Sken * clean up the LUN in the event of an error. 2390229997Sken */ 2391229997Sken be_lun->flags |= CTL_BE_BLOCK_LUN_WAITING; 2392229997Sken 2393229997Sken while (be_lun->flags & CTL_BE_BLOCK_LUN_UNCONFIGURED) { 2394229997Sken retval = msleep(be_lun, &softc->lock, PCATCH, "ctlblk", 0); 2395229997Sken if (retval == EINTR) 2396229997Sken break; 2397229997Sken } 2398229997Sken be_lun->flags &= ~CTL_BE_BLOCK_LUN_WAITING; 2399229997Sken 2400229997Sken if (be_lun->flags & CTL_BE_BLOCK_LUN_CONFIG_ERR) { 2401229997Sken snprintf(req->error_str, sizeof(req->error_str), 2402272911Smav "LUN configuration error, see dmesg for details"); 2403229997Sken STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_block_lun, 2404229997Sken links); 2405229997Sken softc->num_luns--; 2406229997Sken mtx_unlock(&softc->lock); 2407229997Sken goto bailout_error; 2408229997Sken } else { 2409287499Smav params->req_lun_id = cbe_lun->lun_id; 2410229997Sken } 2411229997Sken 2412229997Sken mtx_unlock(&softc->lock); 2413229997Sken 2414229997Sken be_lun->disk_stats = devstat_new_entry("cbb", params->req_lun_id, 2415287499Smav cbe_lun->blocksize, 2416229997Sken DEVSTAT_ALL_SUPPORTED, 2417287499Smav cbe_lun->lun_type 2418229997Sken | DEVSTAT_TYPE_IF_OTHER, 2419229997Sken DEVSTAT_PRIORITY_OTHER); 2420229997Sken 2421229997Sken return (retval); 2422229997Sken 2423229997Skenbailout_error: 2424229997Sken req->status = CTL_LUN_ERROR; 2425229997Sken 2426267429Smav if (be_lun->io_taskqueue != NULL) 2427267429Smav taskqueue_free(be_lun->io_taskqueue); 2428229997Sken ctl_be_block_close(be_lun); 2429267429Smav if (be_lun->dev_path != NULL) 2430267429Smav free(be_lun->dev_path, M_CTLBLK); 2431267429Smav if (be_lun->lun_zone != NULL) 2432267429Smav uma_zdestroy(be_lun->lun_zone); 2433287499Smav ctl_free_opts(&cbe_lun->options); 2434267877Smav mtx_destroy(&be_lun->queue_lock); 2435267877Smav mtx_destroy(&be_lun->io_lock); 2436229997Sken free(be_lun, M_CTLBLK); 2437229997Sken 2438229997Sken return (retval); 2439229997Sken} 2440229997Sken 2441229997Skenstatic int 2442229997Skenctl_be_block_rm(struct ctl_be_block_softc *softc, struct ctl_lun_req *req) 2443229997Sken{ 2444229997Sken struct ctl_lun_rm_params *params; 2445229997Sken struct ctl_be_block_lun *be_lun; 2446229997Sken int retval; 2447229997Sken 2448229997Sken params = &req->reqdata.rm; 2449229997Sken 2450229997Sken mtx_lock(&softc->lock); 2451229997Sken STAILQ_FOREACH(be_lun, &softc->lun_list, links) { 2452287499Smav if (be_lun->cbe_lun.lun_id == params->lun_id) 2453229997Sken break; 2454229997Sken } 2455229997Sken mtx_unlock(&softc->lock); 2456229997Sken 2457229997Sken if (be_lun == NULL) { 2458229997Sken snprintf(req->error_str, sizeof(req->error_str), 2459272911Smav "LUN %u is not managed by the block backend", 2460272911Smav params->lun_id); 2461229997Sken goto bailout_error; 2462229997Sken } 2463229997Sken 2464287499Smav retval = ctl_disable_lun(&be_lun->cbe_lun); 2465229997Sken 2466229997Sken if (retval != 0) { 2467229997Sken snprintf(req->error_str, sizeof(req->error_str), 2468272911Smav "error %d returned from ctl_disable_lun() for " 2469272911Smav "LUN %d", retval, params->lun_id); 2470229997Sken goto bailout_error; 2471229997Sken 2472229997Sken } 2473229997Sken 2474287499Smav retval = ctl_invalidate_lun(&be_lun->cbe_lun); 2475229997Sken if (retval != 0) { 2476229997Sken snprintf(req->error_str, sizeof(req->error_str), 2477272911Smav "error %d returned from ctl_invalidate_lun() for " 2478272911Smav "LUN %d", retval, params->lun_id); 2479229997Sken goto bailout_error; 2480229997Sken } 2481229997Sken 2482229997Sken mtx_lock(&softc->lock); 2483229997Sken 2484229997Sken be_lun->flags |= CTL_BE_BLOCK_LUN_WAITING; 2485229997Sken 2486229997Sken while ((be_lun->flags & CTL_BE_BLOCK_LUN_UNCONFIGURED) == 0) { 2487229997Sken retval = msleep(be_lun, &softc->lock, PCATCH, "ctlblk", 0); 2488229997Sken if (retval == EINTR) 2489229997Sken break; 2490229997Sken } 2491229997Sken 2492229997Sken be_lun->flags &= ~CTL_BE_BLOCK_LUN_WAITING; 2493229997Sken 2494229997Sken if ((be_lun->flags & CTL_BE_BLOCK_LUN_UNCONFIGURED) == 0) { 2495229997Sken snprintf(req->error_str, sizeof(req->error_str), 2496272911Smav "interrupted waiting for LUN to be freed"); 2497229997Sken mtx_unlock(&softc->lock); 2498229997Sken goto bailout_error; 2499229997Sken } 2500229997Sken 2501229997Sken STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_block_lun, links); 2502229997Sken 2503229997Sken softc->num_luns--; 2504229997Sken mtx_unlock(&softc->lock); 2505229997Sken 2506229997Sken taskqueue_drain(be_lun->io_taskqueue, &be_lun->io_task); 2507229997Sken 2508229997Sken taskqueue_free(be_lun->io_taskqueue); 2509229997Sken 2510229997Sken ctl_be_block_close(be_lun); 2511229997Sken 2512229997Sken if (be_lun->disk_stats != NULL) 2513229997Sken devstat_remove_entry(be_lun->disk_stats); 2514229997Sken 2515229997Sken uma_zdestroy(be_lun->lun_zone); 2516229997Sken 2517287499Smav ctl_free_opts(&be_lun->cbe_lun.options); 2518229997Sken free(be_lun->dev_path, M_CTLBLK); 2519267877Smav mtx_destroy(&be_lun->queue_lock); 2520267877Smav mtx_destroy(&be_lun->io_lock); 2521229997Sken free(be_lun, M_CTLBLK); 2522229997Sken 2523229997Sken req->status = CTL_LUN_OK; 2524229997Sken 2525229997Sken return (0); 2526229997Sken 2527229997Skenbailout_error: 2528229997Sken 2529229997Sken req->status = CTL_LUN_ERROR; 2530229997Sken 2531229997Sken return (0); 2532229997Sken} 2533229997Sken 2534232604Straszstatic int 2535232604Straszctl_be_block_modify_file(struct ctl_be_block_lun *be_lun, 2536232604Strasz struct ctl_lun_req *req) 2537232604Strasz{ 2538287499Smav struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun; 2539232604Strasz struct vattr vattr; 2540232604Strasz int error; 2541272911Smav struct ctl_lun_create_params *params = &be_lun->params; 2542232604Strasz 2543232604Strasz if (params->lun_size_bytes != 0) { 2544232604Strasz be_lun->size_bytes = params->lun_size_bytes; 2545232604Strasz } else { 2546271794Smav vn_lock(be_lun->vn, LK_SHARED | LK_RETRY); 2547232604Strasz error = VOP_GETATTR(be_lun->vn, &vattr, curthread->td_ucred); 2548271794Smav VOP_UNLOCK(be_lun->vn, 0); 2549232604Strasz if (error != 0) { 2550232604Strasz snprintf(req->error_str, sizeof(req->error_str), 2551232604Strasz "error calling VOP_GETATTR() for file %s", 2552232604Strasz be_lun->dev_path); 2553232604Strasz return (error); 2554232604Strasz } 2555232604Strasz be_lun->size_bytes = vattr.va_size; 2556232604Strasz } 2557287499Smav be_lun->size_blocks = be_lun->size_bytes / cbe_lun->blocksize; 2558287499Smav cbe_lun->maxlba = (be_lun->size_blocks == 0) ? 2559287499Smav 0 : (be_lun->size_blocks - 1); 2560232604Strasz return (0); 2561232604Strasz} 2562232604Strasz 2563232604Straszstatic int 2564232604Straszctl_be_block_modify_dev(struct ctl_be_block_lun *be_lun, 2565232604Strasz struct ctl_lun_req *req) 2566232604Strasz{ 2567287499Smav struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun; 2568272911Smav struct ctl_lun_create_params *params = &be_lun->params; 2569287664Smav struct cdevsw *csw; 2570287664Smav struct cdev *dev; 2571232604Strasz uint64_t size_bytes; 2572287664Smav int error, ref; 2573232604Strasz 2574287664Smav csw = devvn_refthread(be_lun->vn, &dev, &ref); 2575287664Smav if (csw == NULL) 2576287664Smav return (ENXIO); 2577287664Smav if (csw->d_ioctl == NULL) { 2578287664Smav dev_relthread(dev, ref); 2579232604Strasz snprintf(req->error_str, sizeof(req->error_str), 2580272911Smav "no d_ioctl for device %s!", be_lun->dev_path); 2581232604Strasz return (ENODEV); 2582232604Strasz } 2583232604Strasz 2584287664Smav error = csw->d_ioctl(dev, DIOCGMEDIASIZE, (caddr_t)&size_bytes, FREAD, 2585287664Smav curthread); 2586287664Smav dev_relthread(dev, ref); 2587232604Strasz if (error) { 2588232604Strasz snprintf(req->error_str, sizeof(req->error_str), 2589272911Smav "error %d returned for DIOCGMEDIASIZE ioctl " 2590272911Smav "on %s!", error, be_lun->dev_path); 2591232604Strasz return (error); 2592232604Strasz } 2593232604Strasz 2594232604Strasz if (params->lun_size_bytes != 0) { 2595232604Strasz if (params->lun_size_bytes > size_bytes) { 2596232604Strasz snprintf(req->error_str, sizeof(req->error_str), 2597272911Smav "requested LUN size %ju > backing device " 2598272911Smav "size %ju", 2599232604Strasz (uintmax_t)params->lun_size_bytes, 2600232604Strasz (uintmax_t)size_bytes); 2601232604Strasz return (EINVAL); 2602232604Strasz } 2603232604Strasz be_lun->size_bytes = params->lun_size_bytes; 2604232604Strasz } else { 2605232604Strasz be_lun->size_bytes = size_bytes; 2606232604Strasz } 2607287499Smav be_lun->size_blocks = be_lun->size_bytes / cbe_lun->blocksize; 2608287499Smav cbe_lun->maxlba = (be_lun->size_blocks == 0) ? 2609287499Smav 0 : (be_lun->size_blocks - 1); 2610232604Strasz return (0); 2611232604Strasz} 2612232604Strasz 2613232604Straszstatic int 2614232604Straszctl_be_block_modify(struct ctl_be_block_softc *softc, struct ctl_lun_req *req) 2615232604Strasz{ 2616232604Strasz struct ctl_lun_modify_params *params; 2617232604Strasz struct ctl_be_block_lun *be_lun; 2618287500Smav struct ctl_be_lun *cbe_lun; 2619287621Smav char *value; 2620271794Smav uint64_t oldsize; 2621287621Smav int error, wasprim; 2622232604Strasz 2623232604Strasz params = &req->reqdata.modify; 2624232604Strasz 2625232604Strasz mtx_lock(&softc->lock); 2626232604Strasz STAILQ_FOREACH(be_lun, &softc->lun_list, links) { 2627287499Smav if (be_lun->cbe_lun.lun_id == params->lun_id) 2628232604Strasz break; 2629232604Strasz } 2630232604Strasz mtx_unlock(&softc->lock); 2631232604Strasz 2632232604Strasz if (be_lun == NULL) { 2633232604Strasz snprintf(req->error_str, sizeof(req->error_str), 2634272911Smav "LUN %u is not managed by the block backend", 2635272911Smav params->lun_id); 2636232604Strasz goto bailout_error; 2637232604Strasz } 2638287500Smav cbe_lun = &be_lun->cbe_lun; 2639232604Strasz 2640287500Smav if (params->lun_size_bytes != 0) 2641287500Smav be_lun->params.lun_size_bytes = params->lun_size_bytes; 2642287500Smav ctl_update_opts(&cbe_lun->options, req->num_be_args, req->kern_be_args); 2643232604Strasz 2644287621Smav wasprim = (cbe_lun->flags & CTL_LUN_FLAG_PRIMARY); 2645287621Smav value = ctl_get_opt(&cbe_lun->options, "ha_role"); 2646287621Smav if (value != NULL) { 2647287621Smav if (strcmp(value, "primary") == 0) 2648287621Smav cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY; 2649287621Smav else 2650287621Smav cbe_lun->flags &= ~CTL_LUN_FLAG_PRIMARY; 2651287621Smav } else if (control_softc->flags & CTL_FLAG_ACTIVE_SHELF) 2652287621Smav cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY; 2653232604Strasz else 2654287621Smav cbe_lun->flags &= ~CTL_LUN_FLAG_PRIMARY; 2655287621Smav if (wasprim != (cbe_lun->flags & CTL_LUN_FLAG_PRIMARY)) { 2656287621Smav if (cbe_lun->flags & CTL_LUN_FLAG_PRIMARY) 2657287621Smav ctl_lun_primary(cbe_lun); 2658287621Smav else 2659287621Smav ctl_lun_secondary(cbe_lun); 2660287621Smav } 2661232604Strasz 2662287621Smav oldsize = be_lun->size_blocks; 2663287621Smav if ((cbe_lun->flags & CTL_LUN_FLAG_PRIMARY) || 2664287621Smav control_softc->ha_mode == CTL_HA_MODE_SER_ONLY) { 2665287621Smav if (be_lun->vn == NULL) 2666287621Smav error = ctl_be_block_open(softc, be_lun, req); 2667287621Smav else if (vn_isdisk(be_lun->vn, &error)) 2668287621Smav error = ctl_be_block_modify_dev(be_lun, req); 2669287621Smav else if (be_lun->vn->v_type == VREG) 2670287621Smav error = ctl_be_block_modify_file(be_lun, req); 2671287621Smav else 2672287621Smav error = EINVAL; 2673287621Smav if ((cbe_lun->flags & CTL_LUN_FLAG_OFFLINE) && 2674287621Smav be_lun->vn != NULL) { 2675287621Smav cbe_lun->flags &= ~CTL_LUN_FLAG_OFFLINE; 2676287621Smav ctl_lun_online(cbe_lun); 2677287621Smav } 2678287621Smav } else { 2679287621Smav if (be_lun->vn != NULL) { 2680287621Smav cbe_lun->flags |= CTL_LUN_FLAG_OFFLINE; 2681287621Smav ctl_lun_offline(cbe_lun); 2682287621Smav pause("CTL LUN offline", hz / 8); // XXX 2683287621Smav error = ctl_be_block_close(be_lun); 2684287621Smav } else 2685287621Smav error = 0; 2686287621Smav } 2687287499Smav if (be_lun->size_blocks != oldsize) 2688287500Smav ctl_lun_capacity_changed(cbe_lun); 2689232604Strasz 2690232604Strasz /* Tell the user the exact size we ended up using */ 2691232604Strasz params->lun_size_bytes = be_lun->size_bytes; 2692232604Strasz 2693272911Smav req->status = error ? CTL_LUN_WARNING : CTL_LUN_OK; 2694232604Strasz return (0); 2695232604Strasz 2696232604Straszbailout_error: 2697232604Strasz req->status = CTL_LUN_ERROR; 2698232604Strasz return (0); 2699232604Strasz} 2700232604Strasz 2701229997Skenstatic void 2702229997Skenctl_be_block_lun_shutdown(void *be_lun) 2703229997Sken{ 2704229997Sken struct ctl_be_block_lun *lun; 2705229997Sken struct ctl_be_block_softc *softc; 2706229997Sken 2707229997Sken lun = (struct ctl_be_block_lun *)be_lun; 2708229997Sken 2709229997Sken softc = lun->softc; 2710229997Sken 2711229997Sken mtx_lock(&softc->lock); 2712229997Sken lun->flags |= CTL_BE_BLOCK_LUN_UNCONFIGURED; 2713229997Sken if (lun->flags & CTL_BE_BLOCK_LUN_WAITING) 2714229997Sken wakeup(lun); 2715229997Sken mtx_unlock(&softc->lock); 2716229997Sken 2717229997Sken} 2718229997Sken 2719229997Skenstatic void 2720229997Skenctl_be_block_lun_config_status(void *be_lun, ctl_lun_config_status status) 2721229997Sken{ 2722229997Sken struct ctl_be_block_lun *lun; 2723229997Sken struct ctl_be_block_softc *softc; 2724229997Sken 2725229997Sken lun = (struct ctl_be_block_lun *)be_lun; 2726229997Sken softc = lun->softc; 2727229997Sken 2728229997Sken if (status == CTL_LUN_CONFIG_OK) { 2729229997Sken mtx_lock(&softc->lock); 2730229997Sken lun->flags &= ~CTL_BE_BLOCK_LUN_UNCONFIGURED; 2731229997Sken if (lun->flags & CTL_BE_BLOCK_LUN_WAITING) 2732229997Sken wakeup(lun); 2733229997Sken mtx_unlock(&softc->lock); 2734229997Sken 2735229997Sken /* 2736229997Sken * We successfully added the LUN, attempt to enable it. 2737229997Sken */ 2738287499Smav if (ctl_enable_lun(&lun->cbe_lun) != 0) { 2739229997Sken printf("%s: ctl_enable_lun() failed!\n", __func__); 2740287499Smav if (ctl_invalidate_lun(&lun->cbe_lun) != 0) { 2741229997Sken printf("%s: ctl_invalidate_lun() failed!\n", 2742229997Sken __func__); 2743229997Sken } 2744229997Sken } 2745229997Sken 2746229997Sken return; 2747229997Sken } 2748229997Sken 2749229997Sken 2750229997Sken mtx_lock(&softc->lock); 2751229997Sken lun->flags &= ~CTL_BE_BLOCK_LUN_UNCONFIGURED; 2752229997Sken lun->flags |= CTL_BE_BLOCK_LUN_CONFIG_ERR; 2753229997Sken wakeup(lun); 2754229997Sken mtx_unlock(&softc->lock); 2755229997Sken} 2756229997Sken 2757229997Sken 2758229997Skenstatic int 2759229997Skenctl_be_block_config_write(union ctl_io *io) 2760229997Sken{ 2761229997Sken struct ctl_be_block_lun *be_lun; 2762287499Smav struct ctl_be_lun *cbe_lun; 2763229997Sken int retval; 2764229997Sken 2765229997Sken retval = 0; 2766229997Sken 2767229997Sken DPRINTF("entered\n"); 2768229997Sken 2769287499Smav cbe_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[ 2770229997Sken CTL_PRIV_BACKEND_LUN].ptr; 2771287499Smav be_lun = (struct ctl_be_block_lun *)cbe_lun->be_lun; 2772229997Sken 2773229997Sken switch (io->scsiio.cdb[0]) { 2774229997Sken case SYNCHRONIZE_CACHE: 2775229997Sken case SYNCHRONIZE_CACHE_16: 2776264274Smav case WRITE_SAME_10: 2777264274Smav case WRITE_SAME_16: 2778264274Smav case UNMAP: 2779229997Sken /* 2780229997Sken * The upper level CTL code will filter out any CDBs with 2781229997Sken * the immediate bit set and return the proper error. 2782229997Sken * 2783229997Sken * We don't really need to worry about what LBA range the 2784229997Sken * user asked to be synced out. When they issue a sync 2785229997Sken * cache command, we'll sync out the whole thing. 2786229997Sken */ 2787267877Smav mtx_lock(&be_lun->queue_lock); 2788229997Sken STAILQ_INSERT_TAIL(&be_lun->config_write_queue, &io->io_hdr, 2789229997Sken links); 2790267877Smav mtx_unlock(&be_lun->queue_lock); 2791229997Sken taskqueue_enqueue(be_lun->io_taskqueue, &be_lun->io_task); 2792229997Sken break; 2793229997Sken case START_STOP_UNIT: { 2794229997Sken struct scsi_start_stop_unit *cdb; 2795229997Sken 2796229997Sken cdb = (struct scsi_start_stop_unit *)io->scsiio.cdb; 2797229997Sken 2798229997Sken if (cdb->how & SSS_START) 2799287499Smav retval = ctl_start_lun(cbe_lun); 2800229997Sken else { 2801287499Smav retval = ctl_stop_lun(cbe_lun); 2802229997Sken /* 2803229997Sken * XXX KDM Copan-specific offline behavior. 2804229997Sken * Figure out a reasonable way to port this? 2805229997Sken */ 2806229997Sken#ifdef NEEDTOPORT 2807229997Sken if ((retval == 0) 2808229997Sken && (cdb->byte2 & SSS_ONOFFLINE)) 2809287499Smav retval = ctl_lun_offline(cbe_lun); 2810229997Sken#endif 2811229997Sken } 2812229997Sken 2813229997Sken /* 2814229997Sken * In general, the above routines should not fail. They 2815229997Sken * just set state for the LUN. So we've got something 2816229997Sken * pretty wrong here if we can't start or stop the LUN. 2817229997Sken */ 2818229997Sken if (retval != 0) { 2819229997Sken ctl_set_internal_failure(&io->scsiio, 2820229997Sken /*sks_valid*/ 1, 2821229997Sken /*retry_count*/ 0xf051); 2822229997Sken retval = CTL_RETVAL_COMPLETE; 2823229997Sken } else { 2824229997Sken ctl_set_success(&io->scsiio); 2825229997Sken } 2826229997Sken ctl_config_write_done(io); 2827229997Sken break; 2828229997Sken } 2829229997Sken default: 2830229997Sken ctl_set_invalid_opcode(&io->scsiio); 2831229997Sken ctl_config_write_done(io); 2832229997Sken retval = CTL_RETVAL_COMPLETE; 2833229997Sken break; 2834229997Sken } 2835229997Sken 2836229997Sken return (retval); 2837229997Sken} 2838229997Sken 2839229997Skenstatic int 2840229997Skenctl_be_block_config_read(union ctl_io *io) 2841229997Sken{ 2842275474Smav struct ctl_be_block_lun *be_lun; 2843287499Smav struct ctl_be_lun *cbe_lun; 2844275474Smav int retval = 0; 2845275474Smav 2846275474Smav DPRINTF("entered\n"); 2847275474Smav 2848287499Smav cbe_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[ 2849275474Smav CTL_PRIV_BACKEND_LUN].ptr; 2850287499Smav be_lun = (struct ctl_be_block_lun *)cbe_lun->be_lun; 2851275474Smav 2852275474Smav switch (io->scsiio.cdb[0]) { 2853275474Smav case SERVICE_ACTION_IN: 2854275474Smav if (io->scsiio.cdb[1] == SGLS_SERVICE_ACTION) { 2855275474Smav mtx_lock(&be_lun->queue_lock); 2856275474Smav STAILQ_INSERT_TAIL(&be_lun->config_read_queue, 2857275474Smav &io->io_hdr, links); 2858275474Smav mtx_unlock(&be_lun->queue_lock); 2859275474Smav taskqueue_enqueue(be_lun->io_taskqueue, 2860275474Smav &be_lun->io_task); 2861275474Smav retval = CTL_RETVAL_QUEUED; 2862275474Smav break; 2863275474Smav } 2864275474Smav ctl_set_invalid_field(&io->scsiio, 2865275474Smav /*sks_valid*/ 1, 2866275474Smav /*command*/ 1, 2867275474Smav /*field*/ 1, 2868275474Smav /*bit_valid*/ 1, 2869275474Smav /*bit*/ 4); 2870275474Smav ctl_config_read_done(io); 2871275474Smav retval = CTL_RETVAL_COMPLETE; 2872275474Smav break; 2873275474Smav default: 2874275474Smav ctl_set_invalid_opcode(&io->scsiio); 2875275474Smav ctl_config_read_done(io); 2876275474Smav retval = CTL_RETVAL_COMPLETE; 2877275474Smav break; 2878275474Smav } 2879275474Smav 2880275474Smav return (retval); 2881229997Sken} 2882229997Sken 2883229997Skenstatic int 2884229997Skenctl_be_block_lun_info(void *be_lun, struct sbuf *sb) 2885229997Sken{ 2886229997Sken struct ctl_be_block_lun *lun; 2887229997Sken int retval; 2888229997Sken 2889229997Sken lun = (struct ctl_be_block_lun *)be_lun; 2890229997Sken retval = 0; 2891229997Sken 2892268283Smav retval = sbuf_printf(sb, "\t<num_threads>"); 2893229997Sken 2894229997Sken if (retval != 0) 2895229997Sken goto bailout; 2896229997Sken 2897229997Sken retval = sbuf_printf(sb, "%d", lun->num_threads); 2898229997Sken 2899229997Sken if (retval != 0) 2900229997Sken goto bailout; 2901229997Sken 2902268283Smav retval = sbuf_printf(sb, "</num_threads>\n"); 2903229997Sken 2904229997Skenbailout: 2905229997Sken 2906229997Sken return (retval); 2907229997Sken} 2908229997Sken 2909274154Smavstatic uint64_t 2910274154Smavctl_be_block_lun_attr(void *be_lun, const char *attrname) 2911274154Smav{ 2912274154Smav struct ctl_be_block_lun *lun = (struct ctl_be_block_lun *)be_lun; 2913274154Smav 2914274154Smav if (lun->getattr == NULL) 2915274154Smav return (UINT64_MAX); 2916274154Smav return (lun->getattr(lun, attrname)); 2917274154Smav} 2918274154Smav 2919229997Skenint 2920229997Skenctl_be_block_init(void) 2921229997Sken{ 2922229997Sken struct ctl_be_block_softc *softc; 2923229997Sken int retval; 2924229997Sken 2925229997Sken softc = &backend_block_softc; 2926229997Sken retval = 0; 2927229997Sken 2928267877Smav mtx_init(&softc->lock, "ctlblock", NULL, MTX_DEF); 2929264020Strasz beio_zone = uma_zcreate("beio", sizeof(struct ctl_be_block_io), 2930264020Strasz NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0); 2931229997Sken STAILQ_INIT(&softc->lun_list); 2932229997Sken 2933229997Sken return (retval); 2934229997Sken} 2935