3616095801
- Use SDT_PROBE<N>() instead of SDT_PROBE(). This has no functional effect at the moment, but will be needed for some future changes. - Don't hardcode the module component of the probe identifier. This is set automatically by the SDT framework. MFC after: 1 week
2881 lines
78 KiB
C
2881 lines
78 KiB
C
/*-
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* Copyright (c) 2003 Silicon Graphics International Corp.
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* Copyright (c) 2009-2011 Spectra Logic Corporation
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* Copyright (c) 2012 The FreeBSD Foundation
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* Copyright (c) 2014-2015 Alexander Motin <mav@FreeBSD.org>
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* All rights reserved.
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*
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* Portions of this software were developed by Edward Tomasz Napierala
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* under sponsorship from the FreeBSD Foundation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*
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* $Id: //depot/users/kenm/FreeBSD-test2/sys/cam/ctl/ctl_backend_block.c#5 $
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*/
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/*
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* CAM Target Layer driver backend for block devices.
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*
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* Author: Ken Merry <ken@FreeBSD.org>
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/types.h>
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#include <sys/kthread.h>
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#include <sys/bio.h>
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#include <sys/fcntl.h>
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#include <sys/limits.h>
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#include <sys/lock.h>
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#include <sys/mutex.h>
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#include <sys/condvar.h>
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#include <sys/malloc.h>
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#include <sys/conf.h>
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#include <sys/ioccom.h>
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#include <sys/queue.h>
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#include <sys/sbuf.h>
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#include <sys/endian.h>
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#include <sys/uio.h>
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#include <sys/buf.h>
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#include <sys/taskqueue.h>
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#include <sys/vnode.h>
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#include <sys/namei.h>
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#include <sys/mount.h>
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#include <sys/disk.h>
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#include <sys/fcntl.h>
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#include <sys/filedesc.h>
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#include <sys/filio.h>
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#include <sys/proc.h>
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#include <sys/pcpu.h>
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#include <sys/module.h>
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#include <sys/sdt.h>
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#include <sys/devicestat.h>
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#include <sys/sysctl.h>
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#include <geom/geom.h>
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#include <cam/cam.h>
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#include <cam/scsi/scsi_all.h>
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#include <cam/scsi/scsi_da.h>
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#include <cam/ctl/ctl_io.h>
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#include <cam/ctl/ctl.h>
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#include <cam/ctl/ctl_backend.h>
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#include <cam/ctl/ctl_ioctl.h>
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#include <cam/ctl/ctl_ha.h>
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#include <cam/ctl/ctl_scsi_all.h>
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#include <cam/ctl/ctl_private.h>
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#include <cam/ctl/ctl_error.h>
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/*
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* The idea here is that we'll allocate enough S/G space to hold a 1MB
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* I/O. If we get an I/O larger than that, we'll split it.
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*/
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#define CTLBLK_HALF_IO_SIZE (512 * 1024)
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#define CTLBLK_MAX_IO_SIZE (CTLBLK_HALF_IO_SIZE * 2)
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#define CTLBLK_MAX_SEG MAXPHYS
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#define CTLBLK_HALF_SEGS MAX(CTLBLK_HALF_IO_SIZE / CTLBLK_MAX_SEG, 1)
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#define CTLBLK_MAX_SEGS (CTLBLK_HALF_SEGS * 2)
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#ifdef CTLBLK_DEBUG
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#define DPRINTF(fmt, args...) \
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printf("cbb(%s:%d): " fmt, __FUNCTION__, __LINE__, ##args)
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#else
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#define DPRINTF(fmt, args...) do {} while(0)
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#endif
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#define PRIV(io) \
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((struct ctl_ptr_len_flags *)&(io)->io_hdr.ctl_private[CTL_PRIV_BACKEND])
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#define ARGS(io) \
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((struct ctl_lba_len_flags *)&(io)->io_hdr.ctl_private[CTL_PRIV_LBA_LEN])
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SDT_PROVIDER_DEFINE(cbb);
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typedef enum {
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CTL_BE_BLOCK_LUN_UNCONFIGURED = 0x01,
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CTL_BE_BLOCK_LUN_CONFIG_ERR = 0x02,
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CTL_BE_BLOCK_LUN_WAITING = 0x04,
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} ctl_be_block_lun_flags;
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typedef enum {
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CTL_BE_BLOCK_NONE,
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CTL_BE_BLOCK_DEV,
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CTL_BE_BLOCK_FILE
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} ctl_be_block_type;
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struct ctl_be_block_filedata {
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struct ucred *cred;
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};
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union ctl_be_block_bedata {
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struct ctl_be_block_filedata file;
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};
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struct ctl_be_block_io;
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struct ctl_be_block_lun;
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typedef void (*cbb_dispatch_t)(struct ctl_be_block_lun *be_lun,
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struct ctl_be_block_io *beio);
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typedef uint64_t (*cbb_getattr_t)(struct ctl_be_block_lun *be_lun,
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const char *attrname);
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/*
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* Backend LUN structure. There is a 1:1 mapping between a block device
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* and a backend block LUN, and between a backend block LUN and a CTL LUN.
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*/
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struct ctl_be_block_lun {
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struct ctl_lun_create_params params;
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char lunname[32];
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char *dev_path;
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ctl_be_block_type dev_type;
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struct vnode *vn;
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union ctl_be_block_bedata backend;
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cbb_dispatch_t dispatch;
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cbb_dispatch_t lun_flush;
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cbb_dispatch_t unmap;
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cbb_dispatch_t get_lba_status;
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cbb_getattr_t getattr;
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uma_zone_t lun_zone;
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uint64_t size_blocks;
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uint64_t size_bytes;
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struct ctl_be_block_softc *softc;
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struct devstat *disk_stats;
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ctl_be_block_lun_flags flags;
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STAILQ_ENTRY(ctl_be_block_lun) links;
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struct ctl_be_lun cbe_lun;
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struct taskqueue *io_taskqueue;
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struct task io_task;
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int num_threads;
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STAILQ_HEAD(, ctl_io_hdr) input_queue;
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STAILQ_HEAD(, ctl_io_hdr) config_read_queue;
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STAILQ_HEAD(, ctl_io_hdr) config_write_queue;
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STAILQ_HEAD(, ctl_io_hdr) datamove_queue;
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struct mtx_padalign io_lock;
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struct mtx_padalign queue_lock;
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};
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/*
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* Overall softc structure for the block backend module.
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*/
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struct ctl_be_block_softc {
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struct mtx lock;
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int num_luns;
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STAILQ_HEAD(, ctl_be_block_lun) lun_list;
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};
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static struct ctl_be_block_softc backend_block_softc;
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/*
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* Per-I/O information.
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*/
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struct ctl_be_block_io {
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union ctl_io *io;
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struct ctl_sg_entry sg_segs[CTLBLK_MAX_SEGS];
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struct iovec xiovecs[CTLBLK_MAX_SEGS];
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int bio_cmd;
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int num_segs;
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int num_bios_sent;
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int num_bios_done;
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int send_complete;
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int num_errors;
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struct bintime ds_t0;
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devstat_tag_type ds_tag_type;
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devstat_trans_flags ds_trans_type;
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uint64_t io_len;
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uint64_t io_offset;
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int io_arg;
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struct ctl_be_block_softc *softc;
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struct ctl_be_block_lun *lun;
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void (*beio_cont)(struct ctl_be_block_io *beio); /* to continue processing */
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};
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extern struct ctl_softc *control_softc;
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static int cbb_num_threads = 14;
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SYSCTL_NODE(_kern_cam_ctl, OID_AUTO, block, CTLFLAG_RD, 0,
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"CAM Target Layer Block Backend");
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SYSCTL_INT(_kern_cam_ctl_block, OID_AUTO, num_threads, CTLFLAG_RWTUN,
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&cbb_num_threads, 0, "Number of threads per backing file");
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static struct ctl_be_block_io *ctl_alloc_beio(struct ctl_be_block_softc *softc);
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static void ctl_free_beio(struct ctl_be_block_io *beio);
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static void ctl_complete_beio(struct ctl_be_block_io *beio);
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static int ctl_be_block_move_done(union ctl_io *io);
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static void ctl_be_block_biodone(struct bio *bio);
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static void ctl_be_block_flush_file(struct ctl_be_block_lun *be_lun,
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struct ctl_be_block_io *beio);
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static void ctl_be_block_dispatch_file(struct ctl_be_block_lun *be_lun,
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struct ctl_be_block_io *beio);
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static void ctl_be_block_gls_file(struct ctl_be_block_lun *be_lun,
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struct ctl_be_block_io *beio);
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static uint64_t ctl_be_block_getattr_file(struct ctl_be_block_lun *be_lun,
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const char *attrname);
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static void ctl_be_block_flush_dev(struct ctl_be_block_lun *be_lun,
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struct ctl_be_block_io *beio);
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static void ctl_be_block_unmap_dev(struct ctl_be_block_lun *be_lun,
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struct ctl_be_block_io *beio);
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static void ctl_be_block_dispatch_dev(struct ctl_be_block_lun *be_lun,
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struct ctl_be_block_io *beio);
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static uint64_t ctl_be_block_getattr_dev(struct ctl_be_block_lun *be_lun,
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const char *attrname);
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static void ctl_be_block_cr_dispatch(struct ctl_be_block_lun *be_lun,
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union ctl_io *io);
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static void ctl_be_block_cw_dispatch(struct ctl_be_block_lun *be_lun,
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union ctl_io *io);
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static void ctl_be_block_dispatch(struct ctl_be_block_lun *be_lun,
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union ctl_io *io);
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static void ctl_be_block_worker(void *context, int pending);
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static int ctl_be_block_submit(union ctl_io *io);
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static int ctl_be_block_ioctl(struct cdev *dev, u_long cmd, caddr_t addr,
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int flag, struct thread *td);
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static int ctl_be_block_open_file(struct ctl_be_block_lun *be_lun,
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struct ctl_lun_req *req);
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static int ctl_be_block_open_dev(struct ctl_be_block_lun *be_lun,
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struct ctl_lun_req *req);
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static int ctl_be_block_close(struct ctl_be_block_lun *be_lun);
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static int ctl_be_block_open(struct ctl_be_block_lun *be_lun,
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struct ctl_lun_req *req);
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static int ctl_be_block_create(struct ctl_be_block_softc *softc,
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struct ctl_lun_req *req);
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static int ctl_be_block_rm(struct ctl_be_block_softc *softc,
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struct ctl_lun_req *req);
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static int ctl_be_block_modify(struct ctl_be_block_softc *softc,
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struct ctl_lun_req *req);
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static void ctl_be_block_lun_shutdown(void *be_lun);
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static void ctl_be_block_lun_config_status(void *be_lun,
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ctl_lun_config_status status);
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static int ctl_be_block_config_write(union ctl_io *io);
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static int ctl_be_block_config_read(union ctl_io *io);
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static int ctl_be_block_lun_info(void *be_lun, struct sbuf *sb);
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static uint64_t ctl_be_block_lun_attr(void *be_lun, const char *attrname);
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int ctl_be_block_init(void);
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static struct ctl_backend_driver ctl_be_block_driver =
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{
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.name = "block",
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.flags = CTL_BE_FLAG_HAS_CONFIG,
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.init = ctl_be_block_init,
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.data_submit = ctl_be_block_submit,
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.data_move_done = ctl_be_block_move_done,
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.config_read = ctl_be_block_config_read,
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.config_write = ctl_be_block_config_write,
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.ioctl = ctl_be_block_ioctl,
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.lun_info = ctl_be_block_lun_info,
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.lun_attr = ctl_be_block_lun_attr
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};
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MALLOC_DEFINE(M_CTLBLK, "ctlblk", "Memory used for CTL block backend");
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CTL_BACKEND_DECLARE(cbb, ctl_be_block_driver);
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static uma_zone_t beio_zone;
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static struct ctl_be_block_io *
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ctl_alloc_beio(struct ctl_be_block_softc *softc)
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{
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struct ctl_be_block_io *beio;
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beio = uma_zalloc(beio_zone, M_WAITOK | M_ZERO);
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beio->softc = softc;
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return (beio);
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}
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static void
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ctl_free_beio(struct ctl_be_block_io *beio)
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{
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int duplicate_free;
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int i;
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duplicate_free = 0;
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for (i = 0; i < beio->num_segs; i++) {
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if (beio->sg_segs[i].addr == NULL)
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duplicate_free++;
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uma_zfree(beio->lun->lun_zone, beio->sg_segs[i].addr);
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beio->sg_segs[i].addr = NULL;
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/* For compare we had two equal S/G lists. */
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if (ARGS(beio->io)->flags & CTL_LLF_COMPARE) {
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uma_zfree(beio->lun->lun_zone,
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beio->sg_segs[i + CTLBLK_HALF_SEGS].addr);
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beio->sg_segs[i + CTLBLK_HALF_SEGS].addr = NULL;
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}
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}
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if (duplicate_free > 0) {
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printf("%s: %d duplicate frees out of %d segments\n", __func__,
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duplicate_free, beio->num_segs);
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}
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uma_zfree(beio_zone, beio);
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}
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static void
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ctl_complete_beio(struct ctl_be_block_io *beio)
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{
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union ctl_io *io = beio->io;
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if (beio->beio_cont != NULL) {
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beio->beio_cont(beio);
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} else {
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ctl_free_beio(beio);
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ctl_data_submit_done(io);
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}
|
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}
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|
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static size_t
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cmp(uint8_t *a, uint8_t *b, size_t size)
|
|
{
|
|
size_t i;
|
|
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|
for (i = 0; i < size; i++) {
|
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if (a[i] != b[i])
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break;
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}
|
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return (i);
|
|
}
|
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|
|
static void
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ctl_be_block_compare(union ctl_io *io)
|
|
{
|
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struct ctl_be_block_io *beio;
|
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uint64_t off, res;
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int i;
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uint8_t info[8];
|
|
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beio = (struct ctl_be_block_io *)PRIV(io)->ptr;
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off = 0;
|
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for (i = 0; i < beio->num_segs; i++) {
|
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res = cmp(beio->sg_segs[i].addr,
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beio->sg_segs[i + CTLBLK_HALF_SEGS].addr,
|
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beio->sg_segs[i].len);
|
|
off += res;
|
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if (res < beio->sg_segs[i].len)
|
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break;
|
|
}
|
|
if (i < beio->num_segs) {
|
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scsi_u64to8b(off, info);
|
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ctl_set_sense(&io->scsiio, /*current_error*/ 1,
|
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/*sense_key*/ SSD_KEY_MISCOMPARE,
|
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/*asc*/ 0x1D, /*ascq*/ 0x00,
|
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/*type*/ SSD_ELEM_INFO,
|
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/*size*/ sizeof(info), /*data*/ &info,
|
|
/*type*/ SSD_ELEM_NONE);
|
|
} else
|
|
ctl_set_success(&io->scsiio);
|
|
}
|
|
|
|
static int
|
|
ctl_be_block_move_done(union ctl_io *io)
|
|
{
|
|
struct ctl_be_block_io *beio;
|
|
struct ctl_be_block_lun *be_lun;
|
|
struct ctl_lba_len_flags *lbalen;
|
|
#ifdef CTL_TIME_IO
|
|
struct bintime cur_bt;
|
|
#endif
|
|
|
|
beio = (struct ctl_be_block_io *)PRIV(io)->ptr;
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|
be_lun = beio->lun;
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|
|
DPRINTF("entered\n");
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|
|
|
#ifdef CTL_TIME_IO
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|
getbinuptime(&cur_bt);
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bintime_sub(&cur_bt, &io->io_hdr.dma_start_bt);
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bintime_add(&io->io_hdr.dma_bt, &cur_bt);
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#endif
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io->io_hdr.num_dmas++;
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io->scsiio.kern_rel_offset += io->scsiio.kern_data_len;
|
|
|
|
/*
|
|
* We set status at this point for read commands, and write
|
|
* commands with errors.
|
|
*/
|
|
if (io->io_hdr.flags & CTL_FLAG_ABORT) {
|
|
;
|
|
} else if ((io->io_hdr.port_status == 0) &&
|
|
((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE)) {
|
|
lbalen = ARGS(beio->io);
|
|
if (lbalen->flags & CTL_LLF_READ) {
|
|
ctl_set_success(&io->scsiio);
|
|
} else if (lbalen->flags & CTL_LLF_COMPARE) {
|
|
/* We have two data blocks ready for comparison. */
|
|
ctl_be_block_compare(io);
|
|
}
|
|
} else if ((io->io_hdr.port_status != 0) &&
|
|
((io->io_hdr.status & CTL_STATUS_MASK) == CTL_STATUS_NONE ||
|
|
(io->io_hdr.status & CTL_STATUS_MASK) == CTL_SUCCESS)) {
|
|
/*
|
|
* For hardware error sense keys, the sense key
|
|
* specific value is defined to be a retry count,
|
|
* but we use it to pass back an internal FETD
|
|
* error code. XXX KDM Hopefully the FETD is only
|
|
* using 16 bits for an error code, since that's
|
|
* all the space we have in the sks field.
|
|
*/
|
|
ctl_set_internal_failure(&io->scsiio,
|
|
/*sks_valid*/ 1,
|
|
/*retry_count*/
|
|
io->io_hdr.port_status);
|
|
}
|
|
|
|
/*
|
|
* If this is a read, or a write with errors, it is done.
|
|
*/
|
|
if ((beio->bio_cmd == BIO_READ)
|
|
|| ((io->io_hdr.flags & CTL_FLAG_ABORT) != 0)
|
|
|| ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE)) {
|
|
ctl_complete_beio(beio);
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* At this point, we have a write and the DMA completed
|
|
* successfully. We now have to queue it to the task queue to
|
|
* execute the backend I/O. That is because we do blocking
|
|
* memory allocations, and in the file backing case, blocking I/O.
|
|
* This move done routine is generally called in the SIM's
|
|
* interrupt context, and therefore we cannot block.
|
|
*/
|
|
mtx_lock(&be_lun->queue_lock);
|
|
STAILQ_INSERT_TAIL(&be_lun->datamove_queue, &io->io_hdr, links);
|
|
mtx_unlock(&be_lun->queue_lock);
|
|
taskqueue_enqueue(be_lun->io_taskqueue, &be_lun->io_task);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_biodone(struct bio *bio)
|
|
{
|
|
struct ctl_be_block_io *beio;
|
|
struct ctl_be_block_lun *be_lun;
|
|
union ctl_io *io;
|
|
int error;
|
|
|
|
beio = bio->bio_caller1;
|
|
be_lun = beio->lun;
|
|
io = beio->io;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
error = bio->bio_error;
|
|
mtx_lock(&be_lun->io_lock);
|
|
if (error != 0)
|
|
beio->num_errors++;
|
|
|
|
beio->num_bios_done++;
|
|
|
|
/*
|
|
* XXX KDM will this cause WITNESS to complain? Holding a lock
|
|
* during the free might cause it to complain.
|
|
*/
|
|
g_destroy_bio(bio);
|
|
|
|
/*
|
|
* If the send complete bit isn't set, or we aren't the last I/O to
|
|
* complete, then we're done.
|
|
*/
|
|
if ((beio->send_complete == 0)
|
|
|| (beio->num_bios_done < beio->num_bios_sent)) {
|
|
mtx_unlock(&be_lun->io_lock);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* At this point, we've verified that we are the last I/O to
|
|
* complete, so it's safe to drop the lock.
|
|
*/
|
|
devstat_end_transaction(beio->lun->disk_stats, beio->io_len,
|
|
beio->ds_tag_type, beio->ds_trans_type,
|
|
/*now*/ NULL, /*then*/&beio->ds_t0);
|
|
mtx_unlock(&be_lun->io_lock);
|
|
|
|
/*
|
|
* If there are any errors from the backing device, we fail the
|
|
* entire I/O with a medium error.
|
|
*/
|
|
if (beio->num_errors > 0) {
|
|
if (error == EOPNOTSUPP) {
|
|
ctl_set_invalid_opcode(&io->scsiio);
|
|
} else if (error == ENOSPC || error == EDQUOT) {
|
|
ctl_set_space_alloc_fail(&io->scsiio);
|
|
} else if (error == EROFS || error == EACCES) {
|
|
ctl_set_hw_write_protected(&io->scsiio);
|
|
} else if (beio->bio_cmd == BIO_FLUSH) {
|
|
/* XXX KDM is there is a better error here? */
|
|
ctl_set_internal_failure(&io->scsiio,
|
|
/*sks_valid*/ 1,
|
|
/*retry_count*/ 0xbad2);
|
|
} else {
|
|
ctl_set_medium_error(&io->scsiio,
|
|
beio->bio_cmd == BIO_READ);
|
|
}
|
|
ctl_complete_beio(beio);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* If this is a write, a flush, a delete or verify, we're all done.
|
|
* If this is a read, we can now send the data to the user.
|
|
*/
|
|
if ((beio->bio_cmd == BIO_WRITE)
|
|
|| (beio->bio_cmd == BIO_FLUSH)
|
|
|| (beio->bio_cmd == BIO_DELETE)
|
|
|| (ARGS(io)->flags & CTL_LLF_VERIFY)) {
|
|
ctl_set_success(&io->scsiio);
|
|
ctl_complete_beio(beio);
|
|
} else {
|
|
if ((ARGS(io)->flags & CTL_LLF_READ) &&
|
|
beio->beio_cont == NULL) {
|
|
ctl_set_success(&io->scsiio);
|
|
ctl_serseq_done(io);
|
|
}
|
|
#ifdef CTL_TIME_IO
|
|
getbinuptime(&io->io_hdr.dma_start_bt);
|
|
#endif
|
|
ctl_datamove(io);
|
|
}
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_flush_file(struct ctl_be_block_lun *be_lun,
|
|
struct ctl_be_block_io *beio)
|
|
{
|
|
union ctl_io *io = beio->io;
|
|
struct mount *mountpoint;
|
|
int error, lock_flags;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
binuptime(&beio->ds_t0);
|
|
mtx_lock(&be_lun->io_lock);
|
|
devstat_start_transaction(beio->lun->disk_stats, &beio->ds_t0);
|
|
mtx_unlock(&be_lun->io_lock);
|
|
|
|
(void) vn_start_write(be_lun->vn, &mountpoint, V_WAIT);
|
|
|
|
if (MNT_SHARED_WRITES(mountpoint) ||
|
|
((mountpoint == NULL) && MNT_SHARED_WRITES(be_lun->vn->v_mount)))
|
|
lock_flags = LK_SHARED;
|
|
else
|
|
lock_flags = LK_EXCLUSIVE;
|
|
vn_lock(be_lun->vn, lock_flags | LK_RETRY);
|
|
error = VOP_FSYNC(be_lun->vn, beio->io_arg ? MNT_NOWAIT : MNT_WAIT,
|
|
curthread);
|
|
VOP_UNLOCK(be_lun->vn, 0);
|
|
|
|
vn_finished_write(mountpoint);
|
|
|
|
mtx_lock(&be_lun->io_lock);
|
|
devstat_end_transaction(beio->lun->disk_stats, beio->io_len,
|
|
beio->ds_tag_type, beio->ds_trans_type,
|
|
/*now*/ NULL, /*then*/&beio->ds_t0);
|
|
mtx_unlock(&be_lun->io_lock);
|
|
|
|
if (error == 0)
|
|
ctl_set_success(&io->scsiio);
|
|
else {
|
|
/* XXX KDM is there is a better error here? */
|
|
ctl_set_internal_failure(&io->scsiio,
|
|
/*sks_valid*/ 1,
|
|
/*retry_count*/ 0xbad1);
|
|
}
|
|
|
|
ctl_complete_beio(beio);
|
|
}
|
|
|
|
SDT_PROBE_DEFINE1(cbb, , read, file_start, "uint64_t");
|
|
SDT_PROBE_DEFINE1(cbb, , write, file_start, "uint64_t");
|
|
SDT_PROBE_DEFINE1(cbb, , read, file_done,"uint64_t");
|
|
SDT_PROBE_DEFINE1(cbb, , write, file_done, "uint64_t");
|
|
|
|
static void
|
|
ctl_be_block_dispatch_file(struct ctl_be_block_lun *be_lun,
|
|
struct ctl_be_block_io *beio)
|
|
{
|
|
struct ctl_be_block_filedata *file_data;
|
|
union ctl_io *io;
|
|
struct uio xuio;
|
|
struct iovec *xiovec;
|
|
size_t s;
|
|
int error, flags, i;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
file_data = &be_lun->backend.file;
|
|
io = beio->io;
|
|
flags = 0;
|
|
if (ARGS(io)->flags & CTL_LLF_DPO)
|
|
flags |= IO_DIRECT;
|
|
if (beio->bio_cmd == BIO_WRITE && ARGS(io)->flags & CTL_LLF_FUA)
|
|
flags |= IO_SYNC;
|
|
|
|
bzero(&xuio, sizeof(xuio));
|
|
if (beio->bio_cmd == BIO_READ) {
|
|
SDT_PROBE0(cbb, , read, file_start);
|
|
xuio.uio_rw = UIO_READ;
|
|
} else {
|
|
SDT_PROBE0(cbb, , write, file_start);
|
|
xuio.uio_rw = UIO_WRITE;
|
|
}
|
|
xuio.uio_offset = beio->io_offset;
|
|
xuio.uio_resid = beio->io_len;
|
|
xuio.uio_segflg = UIO_SYSSPACE;
|
|
xuio.uio_iov = beio->xiovecs;
|
|
xuio.uio_iovcnt = beio->num_segs;
|
|
xuio.uio_td = curthread;
|
|
|
|
for (i = 0, xiovec = xuio.uio_iov; i < xuio.uio_iovcnt; i++, xiovec++) {
|
|
xiovec->iov_base = beio->sg_segs[i].addr;
|
|
xiovec->iov_len = beio->sg_segs[i].len;
|
|
}
|
|
|
|
binuptime(&beio->ds_t0);
|
|
mtx_lock(&be_lun->io_lock);
|
|
devstat_start_transaction(beio->lun->disk_stats, &beio->ds_t0);
|
|
mtx_unlock(&be_lun->io_lock);
|
|
|
|
if (beio->bio_cmd == BIO_READ) {
|
|
vn_lock(be_lun->vn, LK_SHARED | LK_RETRY);
|
|
|
|
/*
|
|
* UFS pays attention to IO_DIRECT for reads. If the
|
|
* DIRECTIO option is configured into the kernel, it calls
|
|
* ffs_rawread(). But that only works for single-segment
|
|
* uios with user space addresses. In our case, with a
|
|
* kernel uio, it still reads into the buffer cache, but it
|
|
* will just try to release the buffer from the cache later
|
|
* on in ffs_read().
|
|
*
|
|
* ZFS does not pay attention to IO_DIRECT for reads.
|
|
*
|
|
* UFS does not pay attention to IO_SYNC for reads.
|
|
*
|
|
* ZFS pays attention to IO_SYNC (which translates into the
|
|
* Solaris define FRSYNC for zfs_read()) for reads. It
|
|
* attempts to sync the file before reading.
|
|
*/
|
|
error = VOP_READ(be_lun->vn, &xuio, flags, file_data->cred);
|
|
|
|
VOP_UNLOCK(be_lun->vn, 0);
|
|
SDT_PROBE0(cbb, , read, file_done);
|
|
if (error == 0 && xuio.uio_resid > 0) {
|
|
/*
|
|
* If we red less then requested (EOF), then
|
|
* we should clean the rest of the buffer.
|
|
*/
|
|
s = beio->io_len - xuio.uio_resid;
|
|
for (i = 0; i < beio->num_segs; i++) {
|
|
if (s >= beio->sg_segs[i].len) {
|
|
s -= beio->sg_segs[i].len;
|
|
continue;
|
|
}
|
|
bzero((uint8_t *)beio->sg_segs[i].addr + s,
|
|
beio->sg_segs[i].len - s);
|
|
s = 0;
|
|
}
|
|
}
|
|
} else {
|
|
struct mount *mountpoint;
|
|
int lock_flags;
|
|
|
|
(void)vn_start_write(be_lun->vn, &mountpoint, V_WAIT);
|
|
|
|
if (MNT_SHARED_WRITES(mountpoint) || ((mountpoint == NULL)
|
|
&& MNT_SHARED_WRITES(be_lun->vn->v_mount)))
|
|
lock_flags = LK_SHARED;
|
|
else
|
|
lock_flags = LK_EXCLUSIVE;
|
|
vn_lock(be_lun->vn, lock_flags | LK_RETRY);
|
|
|
|
/*
|
|
* UFS pays attention to IO_DIRECT for writes. The write
|
|
* is done asynchronously. (Normally the write would just
|
|
* get put into cache.
|
|
*
|
|
* UFS pays attention to IO_SYNC for writes. It will
|
|
* attempt to write the buffer out synchronously if that
|
|
* flag is set.
|
|
*
|
|
* ZFS does not pay attention to IO_DIRECT for writes.
|
|
*
|
|
* ZFS pays attention to IO_SYNC (a.k.a. FSYNC or FRSYNC)
|
|
* for writes. It will flush the transaction from the
|
|
* cache before returning.
|
|
*/
|
|
error = VOP_WRITE(be_lun->vn, &xuio, flags, file_data->cred);
|
|
VOP_UNLOCK(be_lun->vn, 0);
|
|
|
|
vn_finished_write(mountpoint);
|
|
SDT_PROBE0(cbb, , write, file_done);
|
|
}
|
|
|
|
mtx_lock(&be_lun->io_lock);
|
|
devstat_end_transaction(beio->lun->disk_stats, beio->io_len,
|
|
beio->ds_tag_type, beio->ds_trans_type,
|
|
/*now*/ NULL, /*then*/&beio->ds_t0);
|
|
mtx_unlock(&be_lun->io_lock);
|
|
|
|
/*
|
|
* If we got an error, set the sense data to "MEDIUM ERROR" and
|
|
* return the I/O to the user.
|
|
*/
|
|
if (error != 0) {
|
|
if (error == ENOSPC || error == EDQUOT) {
|
|
ctl_set_space_alloc_fail(&io->scsiio);
|
|
} else if (error == EROFS || error == EACCES) {
|
|
ctl_set_hw_write_protected(&io->scsiio);
|
|
} else {
|
|
ctl_set_medium_error(&io->scsiio,
|
|
beio->bio_cmd == BIO_READ);
|
|
}
|
|
ctl_complete_beio(beio);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* If this is a write or a verify, we're all done.
|
|
* If this is a read, we can now send the data to the user.
|
|
*/
|
|
if ((beio->bio_cmd == BIO_WRITE) ||
|
|
(ARGS(io)->flags & CTL_LLF_VERIFY)) {
|
|
ctl_set_success(&io->scsiio);
|
|
ctl_complete_beio(beio);
|
|
} else {
|
|
if ((ARGS(io)->flags & CTL_LLF_READ) &&
|
|
beio->beio_cont == NULL) {
|
|
ctl_set_success(&io->scsiio);
|
|
ctl_serseq_done(io);
|
|
}
|
|
#ifdef CTL_TIME_IO
|
|
getbinuptime(&io->io_hdr.dma_start_bt);
|
|
#endif
|
|
ctl_datamove(io);
|
|
}
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_gls_file(struct ctl_be_block_lun *be_lun,
|
|
struct ctl_be_block_io *beio)
|
|
{
|
|
union ctl_io *io = beio->io;
|
|
struct ctl_lba_len_flags *lbalen = ARGS(io);
|
|
struct scsi_get_lba_status_data *data;
|
|
off_t roff, off;
|
|
int error, status;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
off = roff = ((off_t)lbalen->lba) * be_lun->cbe_lun.blocksize;
|
|
vn_lock(be_lun->vn, LK_SHARED | LK_RETRY);
|
|
error = VOP_IOCTL(be_lun->vn, FIOSEEKHOLE, &off,
|
|
0, curthread->td_ucred, curthread);
|
|
if (error == 0 && off > roff)
|
|
status = 0; /* mapped up to off */
|
|
else {
|
|
error = VOP_IOCTL(be_lun->vn, FIOSEEKDATA, &off,
|
|
0, curthread->td_ucred, curthread);
|
|
if (error == 0 && off > roff)
|
|
status = 1; /* deallocated up to off */
|
|
else {
|
|
status = 0; /* unknown up to the end */
|
|
off = be_lun->size_bytes;
|
|
}
|
|
}
|
|
VOP_UNLOCK(be_lun->vn, 0);
|
|
|
|
data = (struct scsi_get_lba_status_data *)io->scsiio.kern_data_ptr;
|
|
scsi_u64to8b(lbalen->lba, data->descr[0].addr);
|
|
scsi_ulto4b(MIN(UINT32_MAX, off / be_lun->cbe_lun.blocksize -
|
|
lbalen->lba), data->descr[0].length);
|
|
data->descr[0].status = status;
|
|
|
|
ctl_complete_beio(beio);
|
|
}
|
|
|
|
static uint64_t
|
|
ctl_be_block_getattr_file(struct ctl_be_block_lun *be_lun, const char *attrname)
|
|
{
|
|
struct vattr vattr;
|
|
struct statfs statfs;
|
|
uint64_t val;
|
|
int error;
|
|
|
|
val = UINT64_MAX;
|
|
if (be_lun->vn == NULL)
|
|
return (val);
|
|
vn_lock(be_lun->vn, LK_SHARED | LK_RETRY);
|
|
if (strcmp(attrname, "blocksused") == 0) {
|
|
error = VOP_GETATTR(be_lun->vn, &vattr, curthread->td_ucred);
|
|
if (error == 0)
|
|
val = vattr.va_bytes / be_lun->cbe_lun.blocksize;
|
|
}
|
|
if (strcmp(attrname, "blocksavail") == 0 &&
|
|
(be_lun->vn->v_iflag & VI_DOOMED) == 0) {
|
|
error = VFS_STATFS(be_lun->vn->v_mount, &statfs);
|
|
if (error == 0)
|
|
val = statfs.f_bavail * statfs.f_bsize /
|
|
be_lun->cbe_lun.blocksize;
|
|
}
|
|
VOP_UNLOCK(be_lun->vn, 0);
|
|
return (val);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_dispatch_zvol(struct ctl_be_block_lun *be_lun,
|
|
struct ctl_be_block_io *beio)
|
|
{
|
|
union ctl_io *io;
|
|
struct cdevsw *csw;
|
|
struct cdev *dev;
|
|
struct uio xuio;
|
|
struct iovec *xiovec;
|
|
int error, flags, i, ref;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
io = beio->io;
|
|
flags = 0;
|
|
if (ARGS(io)->flags & CTL_LLF_DPO)
|
|
flags |= IO_DIRECT;
|
|
if (beio->bio_cmd == BIO_WRITE && ARGS(io)->flags & CTL_LLF_FUA)
|
|
flags |= IO_SYNC;
|
|
|
|
bzero(&xuio, sizeof(xuio));
|
|
if (beio->bio_cmd == BIO_READ) {
|
|
SDT_PROBE0(cbb, , read, file_start);
|
|
xuio.uio_rw = UIO_READ;
|
|
} else {
|
|
SDT_PROBE0(cbb, , write, file_start);
|
|
xuio.uio_rw = UIO_WRITE;
|
|
}
|
|
xuio.uio_offset = beio->io_offset;
|
|
xuio.uio_resid = beio->io_len;
|
|
xuio.uio_segflg = UIO_SYSSPACE;
|
|
xuio.uio_iov = beio->xiovecs;
|
|
xuio.uio_iovcnt = beio->num_segs;
|
|
xuio.uio_td = curthread;
|
|
|
|
for (i = 0, xiovec = xuio.uio_iov; i < xuio.uio_iovcnt; i++, xiovec++) {
|
|
xiovec->iov_base = beio->sg_segs[i].addr;
|
|
xiovec->iov_len = beio->sg_segs[i].len;
|
|
}
|
|
|
|
binuptime(&beio->ds_t0);
|
|
mtx_lock(&be_lun->io_lock);
|
|
devstat_start_transaction(beio->lun->disk_stats, &beio->ds_t0);
|
|
mtx_unlock(&be_lun->io_lock);
|
|
|
|
csw = devvn_refthread(be_lun->vn, &dev, &ref);
|
|
if (csw) {
|
|
if (beio->bio_cmd == BIO_READ)
|
|
error = csw->d_read(dev, &xuio, flags);
|
|
else
|
|
error = csw->d_write(dev, &xuio, flags);
|
|
dev_relthread(dev, ref);
|
|
} else
|
|
error = ENXIO;
|
|
|
|
if (beio->bio_cmd == BIO_READ)
|
|
SDT_PROBE0(cbb, , read, file_done);
|
|
else
|
|
SDT_PROBE0(cbb, , write, file_done);
|
|
|
|
mtx_lock(&be_lun->io_lock);
|
|
devstat_end_transaction(beio->lun->disk_stats, beio->io_len,
|
|
beio->ds_tag_type, beio->ds_trans_type,
|
|
/*now*/ NULL, /*then*/&beio->ds_t0);
|
|
mtx_unlock(&be_lun->io_lock);
|
|
|
|
/*
|
|
* If we got an error, set the sense data to "MEDIUM ERROR" and
|
|
* return the I/O to the user.
|
|
*/
|
|
if (error != 0) {
|
|
if (error == ENOSPC || error == EDQUOT) {
|
|
ctl_set_space_alloc_fail(&io->scsiio);
|
|
} else if (error == EROFS || error == EACCES) {
|
|
ctl_set_hw_write_protected(&io->scsiio);
|
|
} else {
|
|
ctl_set_medium_error(&io->scsiio,
|
|
beio->bio_cmd == BIO_READ);
|
|
}
|
|
ctl_complete_beio(beio);
|
|
return;
|
|
}
|
|
|
|
/*
|
|
* If this is a write or a verify, we're all done.
|
|
* If this is a read, we can now send the data to the user.
|
|
*/
|
|
if ((beio->bio_cmd == BIO_WRITE) ||
|
|
(ARGS(io)->flags & CTL_LLF_VERIFY)) {
|
|
ctl_set_success(&io->scsiio);
|
|
ctl_complete_beio(beio);
|
|
} else {
|
|
if ((ARGS(io)->flags & CTL_LLF_READ) &&
|
|
beio->beio_cont == NULL) {
|
|
ctl_set_success(&io->scsiio);
|
|
ctl_serseq_done(io);
|
|
}
|
|
#ifdef CTL_TIME_IO
|
|
getbinuptime(&io->io_hdr.dma_start_bt);
|
|
#endif
|
|
ctl_datamove(io);
|
|
}
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_gls_zvol(struct ctl_be_block_lun *be_lun,
|
|
struct ctl_be_block_io *beio)
|
|
{
|
|
union ctl_io *io = beio->io;
|
|
struct cdevsw *csw;
|
|
struct cdev *dev;
|
|
struct ctl_lba_len_flags *lbalen = ARGS(io);
|
|
struct scsi_get_lba_status_data *data;
|
|
off_t roff, off;
|
|
int error, ref, status;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
csw = devvn_refthread(be_lun->vn, &dev, &ref);
|
|
if (csw == NULL) {
|
|
status = 0; /* unknown up to the end */
|
|
off = be_lun->size_bytes;
|
|
goto done;
|
|
}
|
|
off = roff = ((off_t)lbalen->lba) * be_lun->cbe_lun.blocksize;
|
|
error = csw->d_ioctl(dev, FIOSEEKHOLE, (caddr_t)&off, FREAD,
|
|
curthread);
|
|
if (error == 0 && off > roff)
|
|
status = 0; /* mapped up to off */
|
|
else {
|
|
error = csw->d_ioctl(dev, FIOSEEKDATA, (caddr_t)&off, FREAD,
|
|
curthread);
|
|
if (error == 0 && off > roff)
|
|
status = 1; /* deallocated up to off */
|
|
else {
|
|
status = 0; /* unknown up to the end */
|
|
off = be_lun->size_bytes;
|
|
}
|
|
}
|
|
dev_relthread(dev, ref);
|
|
|
|
done:
|
|
data = (struct scsi_get_lba_status_data *)io->scsiio.kern_data_ptr;
|
|
scsi_u64to8b(lbalen->lba, data->descr[0].addr);
|
|
scsi_ulto4b(MIN(UINT32_MAX, off / be_lun->cbe_lun.blocksize -
|
|
lbalen->lba), data->descr[0].length);
|
|
data->descr[0].status = status;
|
|
|
|
ctl_complete_beio(beio);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_flush_dev(struct ctl_be_block_lun *be_lun,
|
|
struct ctl_be_block_io *beio)
|
|
{
|
|
struct bio *bio;
|
|
struct cdevsw *csw;
|
|
struct cdev *dev;
|
|
int ref;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
/* This can't fail, it's a blocking allocation. */
|
|
bio = g_alloc_bio();
|
|
|
|
bio->bio_cmd = BIO_FLUSH;
|
|
bio->bio_offset = 0;
|
|
bio->bio_data = 0;
|
|
bio->bio_done = ctl_be_block_biodone;
|
|
bio->bio_caller1 = beio;
|
|
bio->bio_pblkno = 0;
|
|
|
|
/*
|
|
* We don't need to acquire the LUN lock here, because we are only
|
|
* sending one bio, and so there is no other context to synchronize
|
|
* with.
|
|
*/
|
|
beio->num_bios_sent = 1;
|
|
beio->send_complete = 1;
|
|
|
|
binuptime(&beio->ds_t0);
|
|
mtx_lock(&be_lun->io_lock);
|
|
devstat_start_transaction(be_lun->disk_stats, &beio->ds_t0);
|
|
mtx_unlock(&be_lun->io_lock);
|
|
|
|
csw = devvn_refthread(be_lun->vn, &dev, &ref);
|
|
if (csw) {
|
|
bio->bio_dev = dev;
|
|
csw->d_strategy(bio);
|
|
dev_relthread(dev, ref);
|
|
} else {
|
|
bio->bio_error = ENXIO;
|
|
ctl_be_block_biodone(bio);
|
|
}
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_unmap_dev_range(struct ctl_be_block_lun *be_lun,
|
|
struct ctl_be_block_io *beio,
|
|
uint64_t off, uint64_t len, int last)
|
|
{
|
|
struct bio *bio;
|
|
uint64_t maxlen;
|
|
struct cdevsw *csw;
|
|
struct cdev *dev;
|
|
int ref;
|
|
|
|
csw = devvn_refthread(be_lun->vn, &dev, &ref);
|
|
maxlen = LONG_MAX - (LONG_MAX % be_lun->cbe_lun.blocksize);
|
|
while (len > 0) {
|
|
bio = g_alloc_bio();
|
|
bio->bio_cmd = BIO_DELETE;
|
|
bio->bio_dev = dev;
|
|
bio->bio_offset = off;
|
|
bio->bio_length = MIN(len, maxlen);
|
|
bio->bio_data = 0;
|
|
bio->bio_done = ctl_be_block_biodone;
|
|
bio->bio_caller1 = beio;
|
|
bio->bio_pblkno = off / be_lun->cbe_lun.blocksize;
|
|
|
|
off += bio->bio_length;
|
|
len -= bio->bio_length;
|
|
|
|
mtx_lock(&be_lun->io_lock);
|
|
beio->num_bios_sent++;
|
|
if (last && len == 0)
|
|
beio->send_complete = 1;
|
|
mtx_unlock(&be_lun->io_lock);
|
|
|
|
if (csw) {
|
|
csw->d_strategy(bio);
|
|
} else {
|
|
bio->bio_error = ENXIO;
|
|
ctl_be_block_biodone(bio);
|
|
}
|
|
}
|
|
if (csw)
|
|
dev_relthread(dev, ref);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_unmap_dev(struct ctl_be_block_lun *be_lun,
|
|
struct ctl_be_block_io *beio)
|
|
{
|
|
union ctl_io *io;
|
|
struct ctl_ptr_len_flags *ptrlen;
|
|
struct scsi_unmap_desc *buf, *end;
|
|
uint64_t len;
|
|
|
|
io = beio->io;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
binuptime(&beio->ds_t0);
|
|
mtx_lock(&be_lun->io_lock);
|
|
devstat_start_transaction(be_lun->disk_stats, &beio->ds_t0);
|
|
mtx_unlock(&be_lun->io_lock);
|
|
|
|
if (beio->io_offset == -1) {
|
|
beio->io_len = 0;
|
|
ptrlen = (struct ctl_ptr_len_flags *)&io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN];
|
|
buf = (struct scsi_unmap_desc *)ptrlen->ptr;
|
|
end = buf + ptrlen->len / sizeof(*buf);
|
|
for (; buf < end; buf++) {
|
|
len = (uint64_t)scsi_4btoul(buf->length) *
|
|
be_lun->cbe_lun.blocksize;
|
|
beio->io_len += len;
|
|
ctl_be_block_unmap_dev_range(be_lun, beio,
|
|
scsi_8btou64(buf->lba) * be_lun->cbe_lun.blocksize,
|
|
len, (end - buf < 2) ? TRUE : FALSE);
|
|
}
|
|
} else
|
|
ctl_be_block_unmap_dev_range(be_lun, beio,
|
|
beio->io_offset, beio->io_len, TRUE);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_dispatch_dev(struct ctl_be_block_lun *be_lun,
|
|
struct ctl_be_block_io *beio)
|
|
{
|
|
TAILQ_HEAD(, bio) queue = TAILQ_HEAD_INITIALIZER(queue);
|
|
struct bio *bio;
|
|
struct cdevsw *csw;
|
|
struct cdev *dev;
|
|
off_t cur_offset;
|
|
int i, max_iosize, ref;
|
|
|
|
DPRINTF("entered\n");
|
|
csw = devvn_refthread(be_lun->vn, &dev, &ref);
|
|
|
|
/*
|
|
* We have to limit our I/O size to the maximum supported by the
|
|
* backend device. Hopefully it is MAXPHYS. If the driver doesn't
|
|
* set it properly, use DFLTPHYS.
|
|
*/
|
|
if (csw) {
|
|
max_iosize = dev->si_iosize_max;
|
|
if (max_iosize < PAGE_SIZE)
|
|
max_iosize = DFLTPHYS;
|
|
} else
|
|
max_iosize = DFLTPHYS;
|
|
|
|
cur_offset = beio->io_offset;
|
|
for (i = 0; i < beio->num_segs; i++) {
|
|
size_t cur_size;
|
|
uint8_t *cur_ptr;
|
|
|
|
cur_size = beio->sg_segs[i].len;
|
|
cur_ptr = beio->sg_segs[i].addr;
|
|
|
|
while (cur_size > 0) {
|
|
/* This can't fail, it's a blocking allocation. */
|
|
bio = g_alloc_bio();
|
|
|
|
KASSERT(bio != NULL, ("g_alloc_bio() failed!\n"));
|
|
|
|
bio->bio_cmd = beio->bio_cmd;
|
|
bio->bio_dev = dev;
|
|
bio->bio_caller1 = beio;
|
|
bio->bio_length = min(cur_size, max_iosize);
|
|
bio->bio_offset = cur_offset;
|
|
bio->bio_data = cur_ptr;
|
|
bio->bio_done = ctl_be_block_biodone;
|
|
bio->bio_pblkno = cur_offset / be_lun->cbe_lun.blocksize;
|
|
|
|
cur_offset += bio->bio_length;
|
|
cur_ptr += bio->bio_length;
|
|
cur_size -= bio->bio_length;
|
|
|
|
TAILQ_INSERT_TAIL(&queue, bio, bio_queue);
|
|
beio->num_bios_sent++;
|
|
}
|
|
}
|
|
binuptime(&beio->ds_t0);
|
|
mtx_lock(&be_lun->io_lock);
|
|
devstat_start_transaction(be_lun->disk_stats, &beio->ds_t0);
|
|
beio->send_complete = 1;
|
|
mtx_unlock(&be_lun->io_lock);
|
|
|
|
/*
|
|
* Fire off all allocated requests!
|
|
*/
|
|
while ((bio = TAILQ_FIRST(&queue)) != NULL) {
|
|
TAILQ_REMOVE(&queue, bio, bio_queue);
|
|
if (csw)
|
|
csw->d_strategy(bio);
|
|
else {
|
|
bio->bio_error = ENXIO;
|
|
ctl_be_block_biodone(bio);
|
|
}
|
|
}
|
|
if (csw)
|
|
dev_relthread(dev, ref);
|
|
}
|
|
|
|
static uint64_t
|
|
ctl_be_block_getattr_dev(struct ctl_be_block_lun *be_lun, const char *attrname)
|
|
{
|
|
struct diocgattr_arg arg;
|
|
struct cdevsw *csw;
|
|
struct cdev *dev;
|
|
int error, ref;
|
|
|
|
csw = devvn_refthread(be_lun->vn, &dev, &ref);
|
|
if (csw == NULL)
|
|
return (UINT64_MAX);
|
|
strlcpy(arg.name, attrname, sizeof(arg.name));
|
|
arg.len = sizeof(arg.value.off);
|
|
if (csw->d_ioctl) {
|
|
error = csw->d_ioctl(dev, DIOCGATTR, (caddr_t)&arg, FREAD,
|
|
curthread);
|
|
} else
|
|
error = ENODEV;
|
|
dev_relthread(dev, ref);
|
|
if (error != 0)
|
|
return (UINT64_MAX);
|
|
return (arg.value.off);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_cw_dispatch_sync(struct ctl_be_block_lun *be_lun,
|
|
union ctl_io *io)
|
|
{
|
|
struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun;
|
|
struct ctl_be_block_io *beio;
|
|
struct ctl_lba_len_flags *lbalen;
|
|
|
|
DPRINTF("entered\n");
|
|
beio = (struct ctl_be_block_io *)PRIV(io)->ptr;
|
|
lbalen = (struct ctl_lba_len_flags *)&io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN];
|
|
|
|
beio->io_len = lbalen->len * cbe_lun->blocksize;
|
|
beio->io_offset = lbalen->lba * cbe_lun->blocksize;
|
|
beio->io_arg = (lbalen->flags & SSC_IMMED) != 0;
|
|
beio->bio_cmd = BIO_FLUSH;
|
|
beio->ds_trans_type = DEVSTAT_NO_DATA;
|
|
DPRINTF("SYNC\n");
|
|
be_lun->lun_flush(be_lun, beio);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_cw_done_ws(struct ctl_be_block_io *beio)
|
|
{
|
|
union ctl_io *io;
|
|
|
|
io = beio->io;
|
|
ctl_free_beio(beio);
|
|
if ((io->io_hdr.flags & CTL_FLAG_ABORT) ||
|
|
((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE &&
|
|
(io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS)) {
|
|
ctl_config_write_done(io);
|
|
return;
|
|
}
|
|
|
|
ctl_be_block_config_write(io);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_cw_dispatch_ws(struct ctl_be_block_lun *be_lun,
|
|
union ctl_io *io)
|
|
{
|
|
struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun;
|
|
struct ctl_be_block_io *beio;
|
|
struct ctl_lba_len_flags *lbalen;
|
|
uint64_t len_left, lba;
|
|
uint32_t pb, pbo, adj;
|
|
int i, seglen;
|
|
uint8_t *buf, *end;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
beio = (struct ctl_be_block_io *)PRIV(io)->ptr;
|
|
lbalen = ARGS(beio->io);
|
|
|
|
if (lbalen->flags & ~(SWS_LBDATA | SWS_UNMAP | SWS_ANCHOR | SWS_NDOB) ||
|
|
(lbalen->flags & (SWS_UNMAP | SWS_ANCHOR) && be_lun->unmap == NULL)) {
|
|
ctl_free_beio(beio);
|
|
ctl_set_invalid_field(&io->scsiio,
|
|
/*sks_valid*/ 1,
|
|
/*command*/ 1,
|
|
/*field*/ 1,
|
|
/*bit_valid*/ 0,
|
|
/*bit*/ 0);
|
|
ctl_config_write_done(io);
|
|
return;
|
|
}
|
|
|
|
if (lbalen->flags & (SWS_UNMAP | SWS_ANCHOR)) {
|
|
beio->io_offset = lbalen->lba * cbe_lun->blocksize;
|
|
beio->io_len = (uint64_t)lbalen->len * cbe_lun->blocksize;
|
|
beio->bio_cmd = BIO_DELETE;
|
|
beio->ds_trans_type = DEVSTAT_FREE;
|
|
|
|
be_lun->unmap(be_lun, beio);
|
|
return;
|
|
}
|
|
|
|
beio->bio_cmd = BIO_WRITE;
|
|
beio->ds_trans_type = DEVSTAT_WRITE;
|
|
|
|
DPRINTF("WRITE SAME at LBA %jx len %u\n",
|
|
(uintmax_t)lbalen->lba, lbalen->len);
|
|
|
|
pb = cbe_lun->blocksize << be_lun->cbe_lun.pblockexp;
|
|
if (be_lun->cbe_lun.pblockoff > 0)
|
|
pbo = pb - cbe_lun->blocksize * be_lun->cbe_lun.pblockoff;
|
|
else
|
|
pbo = 0;
|
|
len_left = (uint64_t)lbalen->len * cbe_lun->blocksize;
|
|
for (i = 0, lba = 0; i < CTLBLK_MAX_SEGS && len_left > 0; i++) {
|
|
|
|
/*
|
|
* Setup the S/G entry for this chunk.
|
|
*/
|
|
seglen = MIN(CTLBLK_MAX_SEG, len_left);
|
|
if (pb > cbe_lun->blocksize) {
|
|
adj = ((lbalen->lba + lba) * cbe_lun->blocksize +
|
|
seglen - pbo) % pb;
|
|
if (seglen > adj)
|
|
seglen -= adj;
|
|
else
|
|
seglen -= seglen % cbe_lun->blocksize;
|
|
} else
|
|
seglen -= seglen % cbe_lun->blocksize;
|
|
beio->sg_segs[i].len = seglen;
|
|
beio->sg_segs[i].addr = uma_zalloc(be_lun->lun_zone, M_WAITOK);
|
|
|
|
DPRINTF("segment %d addr %p len %zd\n", i,
|
|
beio->sg_segs[i].addr, beio->sg_segs[i].len);
|
|
|
|
beio->num_segs++;
|
|
len_left -= seglen;
|
|
|
|
buf = beio->sg_segs[i].addr;
|
|
end = buf + seglen;
|
|
for (; buf < end; buf += cbe_lun->blocksize) {
|
|
if (lbalen->flags & SWS_NDOB) {
|
|
memset(buf, 0, cbe_lun->blocksize);
|
|
} else {
|
|
memcpy(buf, io->scsiio.kern_data_ptr,
|
|
cbe_lun->blocksize);
|
|
}
|
|
if (lbalen->flags & SWS_LBDATA)
|
|
scsi_ulto4b(lbalen->lba + lba, buf);
|
|
lba++;
|
|
}
|
|
}
|
|
|
|
beio->io_offset = lbalen->lba * cbe_lun->blocksize;
|
|
beio->io_len = lba * cbe_lun->blocksize;
|
|
|
|
/* We can not do all in one run. Correct and schedule rerun. */
|
|
if (len_left > 0) {
|
|
lbalen->lba += lba;
|
|
lbalen->len -= lba;
|
|
beio->beio_cont = ctl_be_block_cw_done_ws;
|
|
}
|
|
|
|
be_lun->dispatch(be_lun, beio);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_cw_dispatch_unmap(struct ctl_be_block_lun *be_lun,
|
|
union ctl_io *io)
|
|
{
|
|
struct ctl_be_block_io *beio;
|
|
struct ctl_ptr_len_flags *ptrlen;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
beio = (struct ctl_be_block_io *)PRIV(io)->ptr;
|
|
ptrlen = (struct ctl_ptr_len_flags *)&io->io_hdr.ctl_private[CTL_PRIV_LBA_LEN];
|
|
|
|
if ((ptrlen->flags & ~SU_ANCHOR) != 0 || be_lun->unmap == NULL) {
|
|
ctl_free_beio(beio);
|
|
ctl_set_invalid_field(&io->scsiio,
|
|
/*sks_valid*/ 0,
|
|
/*command*/ 1,
|
|
/*field*/ 0,
|
|
/*bit_valid*/ 0,
|
|
/*bit*/ 0);
|
|
ctl_config_write_done(io);
|
|
return;
|
|
}
|
|
|
|
beio->io_len = 0;
|
|
beio->io_offset = -1;
|
|
beio->bio_cmd = BIO_DELETE;
|
|
beio->ds_trans_type = DEVSTAT_FREE;
|
|
DPRINTF("UNMAP\n");
|
|
be_lun->unmap(be_lun, beio);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_cr_done(struct ctl_be_block_io *beio)
|
|
{
|
|
union ctl_io *io;
|
|
|
|
io = beio->io;
|
|
ctl_free_beio(beio);
|
|
ctl_config_read_done(io);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_cr_dispatch(struct ctl_be_block_lun *be_lun,
|
|
union ctl_io *io)
|
|
{
|
|
struct ctl_be_block_io *beio;
|
|
struct ctl_be_block_softc *softc;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
softc = be_lun->softc;
|
|
beio = ctl_alloc_beio(softc);
|
|
beio->io = io;
|
|
beio->lun = be_lun;
|
|
beio->beio_cont = ctl_be_block_cr_done;
|
|
PRIV(io)->ptr = (void *)beio;
|
|
|
|
switch (io->scsiio.cdb[0]) {
|
|
case SERVICE_ACTION_IN: /* GET LBA STATUS */
|
|
beio->bio_cmd = -1;
|
|
beio->ds_trans_type = DEVSTAT_NO_DATA;
|
|
beio->ds_tag_type = DEVSTAT_TAG_ORDERED;
|
|
beio->io_len = 0;
|
|
if (be_lun->get_lba_status)
|
|
be_lun->get_lba_status(be_lun, beio);
|
|
else
|
|
ctl_be_block_cr_done(beio);
|
|
break;
|
|
default:
|
|
panic("Unhandled CDB type %#x", io->scsiio.cdb[0]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_cw_done(struct ctl_be_block_io *beio)
|
|
{
|
|
union ctl_io *io;
|
|
|
|
io = beio->io;
|
|
ctl_free_beio(beio);
|
|
ctl_config_write_done(io);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_cw_dispatch(struct ctl_be_block_lun *be_lun,
|
|
union ctl_io *io)
|
|
{
|
|
struct ctl_be_block_io *beio;
|
|
struct ctl_be_block_softc *softc;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
softc = be_lun->softc;
|
|
beio = ctl_alloc_beio(softc);
|
|
beio->io = io;
|
|
beio->lun = be_lun;
|
|
beio->beio_cont = ctl_be_block_cw_done;
|
|
switch (io->scsiio.tag_type) {
|
|
case CTL_TAG_ORDERED:
|
|
beio->ds_tag_type = DEVSTAT_TAG_ORDERED;
|
|
break;
|
|
case CTL_TAG_HEAD_OF_QUEUE:
|
|
beio->ds_tag_type = DEVSTAT_TAG_HEAD;
|
|
break;
|
|
case CTL_TAG_UNTAGGED:
|
|
case CTL_TAG_SIMPLE:
|
|
case CTL_TAG_ACA:
|
|
default:
|
|
beio->ds_tag_type = DEVSTAT_TAG_SIMPLE;
|
|
break;
|
|
}
|
|
PRIV(io)->ptr = (void *)beio;
|
|
|
|
switch (io->scsiio.cdb[0]) {
|
|
case SYNCHRONIZE_CACHE:
|
|
case SYNCHRONIZE_CACHE_16:
|
|
ctl_be_block_cw_dispatch_sync(be_lun, io);
|
|
break;
|
|
case WRITE_SAME_10:
|
|
case WRITE_SAME_16:
|
|
ctl_be_block_cw_dispatch_ws(be_lun, io);
|
|
break;
|
|
case UNMAP:
|
|
ctl_be_block_cw_dispatch_unmap(be_lun, io);
|
|
break;
|
|
default:
|
|
panic("Unhandled CDB type %#x", io->scsiio.cdb[0]);
|
|
break;
|
|
}
|
|
}
|
|
|
|
SDT_PROBE_DEFINE1(cbb, , read, start, "uint64_t");
|
|
SDT_PROBE_DEFINE1(cbb, , write, start, "uint64_t");
|
|
SDT_PROBE_DEFINE1(cbb, , read, alloc_done, "uint64_t");
|
|
SDT_PROBE_DEFINE1(cbb, , write, alloc_done, "uint64_t");
|
|
|
|
static void
|
|
ctl_be_block_next(struct ctl_be_block_io *beio)
|
|
{
|
|
struct ctl_be_block_lun *be_lun;
|
|
union ctl_io *io;
|
|
|
|
io = beio->io;
|
|
be_lun = beio->lun;
|
|
ctl_free_beio(beio);
|
|
if ((io->io_hdr.flags & CTL_FLAG_ABORT) ||
|
|
((io->io_hdr.status & CTL_STATUS_MASK) != CTL_STATUS_NONE &&
|
|
(io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS)) {
|
|
ctl_data_submit_done(io);
|
|
return;
|
|
}
|
|
|
|
io->io_hdr.status &= ~CTL_STATUS_MASK;
|
|
io->io_hdr.status |= CTL_STATUS_NONE;
|
|
|
|
mtx_lock(&be_lun->queue_lock);
|
|
STAILQ_INSERT_TAIL(&be_lun->input_queue, &io->io_hdr, links);
|
|
mtx_unlock(&be_lun->queue_lock);
|
|
taskqueue_enqueue(be_lun->io_taskqueue, &be_lun->io_task);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_dispatch(struct ctl_be_block_lun *be_lun,
|
|
union ctl_io *io)
|
|
{
|
|
struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun;
|
|
struct ctl_be_block_io *beio;
|
|
struct ctl_be_block_softc *softc;
|
|
struct ctl_lba_len_flags *lbalen;
|
|
struct ctl_ptr_len_flags *bptrlen;
|
|
uint64_t len_left, lbas;
|
|
int i;
|
|
|
|
softc = be_lun->softc;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
lbalen = ARGS(io);
|
|
if (lbalen->flags & CTL_LLF_WRITE) {
|
|
SDT_PROBE0(cbb, , write, start);
|
|
} else {
|
|
SDT_PROBE0(cbb, , read, start);
|
|
}
|
|
|
|
beio = ctl_alloc_beio(softc);
|
|
beio->io = io;
|
|
beio->lun = be_lun;
|
|
bptrlen = PRIV(io);
|
|
bptrlen->ptr = (void *)beio;
|
|
|
|
switch (io->scsiio.tag_type) {
|
|
case CTL_TAG_ORDERED:
|
|
beio->ds_tag_type = DEVSTAT_TAG_ORDERED;
|
|
break;
|
|
case CTL_TAG_HEAD_OF_QUEUE:
|
|
beio->ds_tag_type = DEVSTAT_TAG_HEAD;
|
|
break;
|
|
case CTL_TAG_UNTAGGED:
|
|
case CTL_TAG_SIMPLE:
|
|
case CTL_TAG_ACA:
|
|
default:
|
|
beio->ds_tag_type = DEVSTAT_TAG_SIMPLE;
|
|
break;
|
|
}
|
|
|
|
if (lbalen->flags & CTL_LLF_WRITE) {
|
|
beio->bio_cmd = BIO_WRITE;
|
|
beio->ds_trans_type = DEVSTAT_WRITE;
|
|
} else {
|
|
beio->bio_cmd = BIO_READ;
|
|
beio->ds_trans_type = DEVSTAT_READ;
|
|
}
|
|
|
|
DPRINTF("%s at LBA %jx len %u @%ju\n",
|
|
(beio->bio_cmd == BIO_READ) ? "READ" : "WRITE",
|
|
(uintmax_t)lbalen->lba, lbalen->len, bptrlen->len);
|
|
if (lbalen->flags & CTL_LLF_COMPARE)
|
|
lbas = CTLBLK_HALF_IO_SIZE;
|
|
else
|
|
lbas = CTLBLK_MAX_IO_SIZE;
|
|
lbas = MIN(lbalen->len - bptrlen->len, lbas / cbe_lun->blocksize);
|
|
beio->io_offset = (lbalen->lba + bptrlen->len) * cbe_lun->blocksize;
|
|
beio->io_len = lbas * cbe_lun->blocksize;
|
|
bptrlen->len += lbas;
|
|
|
|
for (i = 0, len_left = beio->io_len; len_left > 0; i++) {
|
|
KASSERT(i < CTLBLK_MAX_SEGS, ("Too many segs (%d >= %d)",
|
|
i, CTLBLK_MAX_SEGS));
|
|
|
|
/*
|
|
* Setup the S/G entry for this chunk.
|
|
*/
|
|
beio->sg_segs[i].len = min(CTLBLK_MAX_SEG, len_left);
|
|
beio->sg_segs[i].addr = uma_zalloc(be_lun->lun_zone, M_WAITOK);
|
|
|
|
DPRINTF("segment %d addr %p len %zd\n", i,
|
|
beio->sg_segs[i].addr, beio->sg_segs[i].len);
|
|
|
|
/* Set up second segment for compare operation. */
|
|
if (lbalen->flags & CTL_LLF_COMPARE) {
|
|
beio->sg_segs[i + CTLBLK_HALF_SEGS].len =
|
|
beio->sg_segs[i].len;
|
|
beio->sg_segs[i + CTLBLK_HALF_SEGS].addr =
|
|
uma_zalloc(be_lun->lun_zone, M_WAITOK);
|
|
}
|
|
|
|
beio->num_segs++;
|
|
len_left -= beio->sg_segs[i].len;
|
|
}
|
|
if (bptrlen->len < lbalen->len)
|
|
beio->beio_cont = ctl_be_block_next;
|
|
io->scsiio.be_move_done = ctl_be_block_move_done;
|
|
/* For compare we have separate S/G lists for read and datamove. */
|
|
if (lbalen->flags & CTL_LLF_COMPARE)
|
|
io->scsiio.kern_data_ptr = (uint8_t *)&beio->sg_segs[CTLBLK_HALF_SEGS];
|
|
else
|
|
io->scsiio.kern_data_ptr = (uint8_t *)beio->sg_segs;
|
|
io->scsiio.kern_data_len = beio->io_len;
|
|
io->scsiio.kern_data_resid = 0;
|
|
io->scsiio.kern_sg_entries = beio->num_segs;
|
|
io->io_hdr.flags |= CTL_FLAG_ALLOCATED;
|
|
|
|
/*
|
|
* For the read case, we need to read the data into our buffers and
|
|
* then we can send it back to the user. For the write case, we
|
|
* need to get the data from the user first.
|
|
*/
|
|
if (beio->bio_cmd == BIO_READ) {
|
|
SDT_PROBE0(cbb, , read, alloc_done);
|
|
be_lun->dispatch(be_lun, beio);
|
|
} else {
|
|
SDT_PROBE0(cbb, , write, alloc_done);
|
|
#ifdef CTL_TIME_IO
|
|
getbinuptime(&io->io_hdr.dma_start_bt);
|
|
#endif
|
|
ctl_datamove(io);
|
|
}
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_worker(void *context, int pending)
|
|
{
|
|
struct ctl_be_block_lun *be_lun = (struct ctl_be_block_lun *)context;
|
|
struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun;
|
|
union ctl_io *io;
|
|
struct ctl_be_block_io *beio;
|
|
|
|
DPRINTF("entered\n");
|
|
/*
|
|
* Fetch and process I/Os from all queues. If we detect LUN
|
|
* CTL_LUN_FLAG_NO_MEDIA status here -- it is result of a race,
|
|
* so make response maximally opaque to not confuse initiator.
|
|
*/
|
|
for (;;) {
|
|
mtx_lock(&be_lun->queue_lock);
|
|
io = (union ctl_io *)STAILQ_FIRST(&be_lun->datamove_queue);
|
|
if (io != NULL) {
|
|
DPRINTF("datamove queue\n");
|
|
STAILQ_REMOVE(&be_lun->datamove_queue, &io->io_hdr,
|
|
ctl_io_hdr, links);
|
|
mtx_unlock(&be_lun->queue_lock);
|
|
beio = (struct ctl_be_block_io *)PRIV(io)->ptr;
|
|
if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) {
|
|
ctl_set_busy(&io->scsiio);
|
|
ctl_complete_beio(beio);
|
|
return;
|
|
}
|
|
be_lun->dispatch(be_lun, beio);
|
|
continue;
|
|
}
|
|
io = (union ctl_io *)STAILQ_FIRST(&be_lun->config_write_queue);
|
|
if (io != NULL) {
|
|
DPRINTF("config write queue\n");
|
|
STAILQ_REMOVE(&be_lun->config_write_queue, &io->io_hdr,
|
|
ctl_io_hdr, links);
|
|
mtx_unlock(&be_lun->queue_lock);
|
|
if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) {
|
|
ctl_set_busy(&io->scsiio);
|
|
ctl_config_write_done(io);
|
|
return;
|
|
}
|
|
ctl_be_block_cw_dispatch(be_lun, io);
|
|
continue;
|
|
}
|
|
io = (union ctl_io *)STAILQ_FIRST(&be_lun->config_read_queue);
|
|
if (io != NULL) {
|
|
DPRINTF("config read queue\n");
|
|
STAILQ_REMOVE(&be_lun->config_read_queue, &io->io_hdr,
|
|
ctl_io_hdr, links);
|
|
mtx_unlock(&be_lun->queue_lock);
|
|
if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) {
|
|
ctl_set_busy(&io->scsiio);
|
|
ctl_config_read_done(io);
|
|
return;
|
|
}
|
|
ctl_be_block_cr_dispatch(be_lun, io);
|
|
continue;
|
|
}
|
|
io = (union ctl_io *)STAILQ_FIRST(&be_lun->input_queue);
|
|
if (io != NULL) {
|
|
DPRINTF("input queue\n");
|
|
STAILQ_REMOVE(&be_lun->input_queue, &io->io_hdr,
|
|
ctl_io_hdr, links);
|
|
mtx_unlock(&be_lun->queue_lock);
|
|
if (cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) {
|
|
ctl_set_busy(&io->scsiio);
|
|
ctl_data_submit_done(io);
|
|
return;
|
|
}
|
|
ctl_be_block_dispatch(be_lun, io);
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* If we get here, there is no work left in the queues, so
|
|
* just break out and let the task queue go to sleep.
|
|
*/
|
|
mtx_unlock(&be_lun->queue_lock);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Entry point from CTL to the backend for I/O. We queue everything to a
|
|
* work thread, so this just puts the I/O on a queue and wakes up the
|
|
* thread.
|
|
*/
|
|
static int
|
|
ctl_be_block_submit(union ctl_io *io)
|
|
{
|
|
struct ctl_be_block_lun *be_lun;
|
|
struct ctl_be_lun *cbe_lun;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
cbe_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[
|
|
CTL_PRIV_BACKEND_LUN].ptr;
|
|
be_lun = (struct ctl_be_block_lun *)cbe_lun->be_lun;
|
|
|
|
/*
|
|
* Make sure we only get SCSI I/O.
|
|
*/
|
|
KASSERT(io->io_hdr.io_type == CTL_IO_SCSI, ("Non-SCSI I/O (type "
|
|
"%#x) encountered", io->io_hdr.io_type));
|
|
|
|
PRIV(io)->len = 0;
|
|
|
|
mtx_lock(&be_lun->queue_lock);
|
|
STAILQ_INSERT_TAIL(&be_lun->input_queue, &io->io_hdr, links);
|
|
mtx_unlock(&be_lun->queue_lock);
|
|
taskqueue_enqueue(be_lun->io_taskqueue, &be_lun->io_task);
|
|
|
|
return (CTL_RETVAL_COMPLETE);
|
|
}
|
|
|
|
static int
|
|
ctl_be_block_ioctl(struct cdev *dev, u_long cmd, caddr_t addr,
|
|
int flag, struct thread *td)
|
|
{
|
|
struct ctl_be_block_softc *softc;
|
|
int error;
|
|
|
|
softc = &backend_block_softc;
|
|
|
|
error = 0;
|
|
|
|
switch (cmd) {
|
|
case CTL_LUN_REQ: {
|
|
struct ctl_lun_req *lun_req;
|
|
|
|
lun_req = (struct ctl_lun_req *)addr;
|
|
|
|
switch (lun_req->reqtype) {
|
|
case CTL_LUNREQ_CREATE:
|
|
error = ctl_be_block_create(softc, lun_req);
|
|
break;
|
|
case CTL_LUNREQ_RM:
|
|
error = ctl_be_block_rm(softc, lun_req);
|
|
break;
|
|
case CTL_LUNREQ_MODIFY:
|
|
error = ctl_be_block_modify(softc, lun_req);
|
|
break;
|
|
default:
|
|
lun_req->status = CTL_LUN_ERROR;
|
|
snprintf(lun_req->error_str, sizeof(lun_req->error_str),
|
|
"invalid LUN request type %d",
|
|
lun_req->reqtype);
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
error = ENOTTY;
|
|
break;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
ctl_be_block_open_file(struct ctl_be_block_lun *be_lun, struct ctl_lun_req *req)
|
|
{
|
|
struct ctl_be_lun *cbe_lun;
|
|
struct ctl_be_block_filedata *file_data;
|
|
struct ctl_lun_create_params *params;
|
|
char *value;
|
|
struct vattr vattr;
|
|
off_t ps, pss, po, pos, us, uss, uo, uos;
|
|
int error;
|
|
|
|
cbe_lun = &be_lun->cbe_lun;
|
|
file_data = &be_lun->backend.file;
|
|
params = &be_lun->params;
|
|
|
|
be_lun->dev_type = CTL_BE_BLOCK_FILE;
|
|
be_lun->dispatch = ctl_be_block_dispatch_file;
|
|
be_lun->lun_flush = ctl_be_block_flush_file;
|
|
be_lun->get_lba_status = ctl_be_block_gls_file;
|
|
be_lun->getattr = ctl_be_block_getattr_file;
|
|
be_lun->unmap = NULL;
|
|
cbe_lun->flags &= ~CTL_LUN_FLAG_UNMAP;
|
|
|
|
error = VOP_GETATTR(be_lun->vn, &vattr, curthread->td_ucred);
|
|
if (error != 0) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"error calling VOP_GETATTR() for file %s",
|
|
be_lun->dev_path);
|
|
return (error);
|
|
}
|
|
|
|
file_data->cred = crhold(curthread->td_ucred);
|
|
if (params->lun_size_bytes != 0)
|
|
be_lun->size_bytes = params->lun_size_bytes;
|
|
else
|
|
be_lun->size_bytes = vattr.va_size;
|
|
|
|
/*
|
|
* For files we can use any logical block size. Prefer 512 bytes
|
|
* for compatibility reasons. If file's vattr.va_blocksize
|
|
* (preferred I/O block size) is bigger and multiple to chosen
|
|
* logical block size -- report it as physical block size.
|
|
*/
|
|
if (params->blocksize_bytes != 0)
|
|
cbe_lun->blocksize = params->blocksize_bytes;
|
|
else if (cbe_lun->lun_type == T_CDROM)
|
|
cbe_lun->blocksize = 2048;
|
|
else
|
|
cbe_lun->blocksize = 512;
|
|
be_lun->size_blocks = be_lun->size_bytes / cbe_lun->blocksize;
|
|
cbe_lun->maxlba = (be_lun->size_blocks == 0) ?
|
|
0 : (be_lun->size_blocks - 1);
|
|
|
|
us = ps = vattr.va_blocksize;
|
|
uo = po = 0;
|
|
|
|
value = ctl_get_opt(&cbe_lun->options, "pblocksize");
|
|
if (value != NULL)
|
|
ctl_expand_number(value, &ps);
|
|
value = ctl_get_opt(&cbe_lun->options, "pblockoffset");
|
|
if (value != NULL)
|
|
ctl_expand_number(value, &po);
|
|
pss = ps / cbe_lun->blocksize;
|
|
pos = po / cbe_lun->blocksize;
|
|
if ((pss > 0) && (pss * cbe_lun->blocksize == ps) && (pss >= pos) &&
|
|
((pss & (pss - 1)) == 0) && (pos * cbe_lun->blocksize == po)) {
|
|
cbe_lun->pblockexp = fls(pss) - 1;
|
|
cbe_lun->pblockoff = (pss - pos) % pss;
|
|
}
|
|
|
|
value = ctl_get_opt(&cbe_lun->options, "ublocksize");
|
|
if (value != NULL)
|
|
ctl_expand_number(value, &us);
|
|
value = ctl_get_opt(&cbe_lun->options, "ublockoffset");
|
|
if (value != NULL)
|
|
ctl_expand_number(value, &uo);
|
|
uss = us / cbe_lun->blocksize;
|
|
uos = uo / cbe_lun->blocksize;
|
|
if ((uss > 0) && (uss * cbe_lun->blocksize == us) && (uss >= uos) &&
|
|
((uss & (uss - 1)) == 0) && (uos * cbe_lun->blocksize == uo)) {
|
|
cbe_lun->ublockexp = fls(uss) - 1;
|
|
cbe_lun->ublockoff = (uss - uos) % uss;
|
|
}
|
|
|
|
/*
|
|
* Sanity check. The media size has to be at least one
|
|
* sector long.
|
|
*/
|
|
if (be_lun->size_bytes < cbe_lun->blocksize) {
|
|
error = EINVAL;
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"file %s size %ju < block size %u", be_lun->dev_path,
|
|
(uintmax_t)be_lun->size_bytes, cbe_lun->blocksize);
|
|
}
|
|
|
|
cbe_lun->opttxferlen = CTLBLK_MAX_IO_SIZE / cbe_lun->blocksize;
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
ctl_be_block_open_dev(struct ctl_be_block_lun *be_lun, struct ctl_lun_req *req)
|
|
{
|
|
struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun;
|
|
struct ctl_lun_create_params *params;
|
|
struct cdevsw *csw;
|
|
struct cdev *dev;
|
|
char *value;
|
|
int error, atomic, maxio, ref, unmap, tmp;
|
|
off_t ps, pss, po, pos, us, uss, uo, uos, otmp;
|
|
|
|
params = &be_lun->params;
|
|
|
|
be_lun->dev_type = CTL_BE_BLOCK_DEV;
|
|
csw = devvn_refthread(be_lun->vn, &dev, &ref);
|
|
if (csw == NULL)
|
|
return (ENXIO);
|
|
if (strcmp(csw->d_name, "zvol") == 0) {
|
|
be_lun->dispatch = ctl_be_block_dispatch_zvol;
|
|
be_lun->get_lba_status = ctl_be_block_gls_zvol;
|
|
atomic = maxio = CTLBLK_MAX_IO_SIZE;
|
|
} else {
|
|
be_lun->dispatch = ctl_be_block_dispatch_dev;
|
|
be_lun->get_lba_status = NULL;
|
|
atomic = 0;
|
|
maxio = dev->si_iosize_max;
|
|
if (maxio <= 0)
|
|
maxio = DFLTPHYS;
|
|
if (maxio > CTLBLK_MAX_IO_SIZE)
|
|
maxio = CTLBLK_MAX_IO_SIZE;
|
|
}
|
|
be_lun->lun_flush = ctl_be_block_flush_dev;
|
|
be_lun->getattr = ctl_be_block_getattr_dev;
|
|
be_lun->unmap = ctl_be_block_unmap_dev;
|
|
|
|
if (!csw->d_ioctl) {
|
|
dev_relthread(dev, ref);
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"no d_ioctl for device %s!", be_lun->dev_path);
|
|
return (ENODEV);
|
|
}
|
|
|
|
error = csw->d_ioctl(dev, DIOCGSECTORSIZE, (caddr_t)&tmp, FREAD,
|
|
curthread);
|
|
if (error) {
|
|
dev_relthread(dev, ref);
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"error %d returned for DIOCGSECTORSIZE ioctl "
|
|
"on %s!", error, be_lun->dev_path);
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* If the user has asked for a blocksize that is greater than the
|
|
* backing device's blocksize, we can do it only if the blocksize
|
|
* the user is asking for is an even multiple of the underlying
|
|
* device's blocksize.
|
|
*/
|
|
if ((params->blocksize_bytes != 0) &&
|
|
(params->blocksize_bytes >= tmp)) {
|
|
if (params->blocksize_bytes % tmp == 0) {
|
|
cbe_lun->blocksize = params->blocksize_bytes;
|
|
} else {
|
|
dev_relthread(dev, ref);
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"requested blocksize %u is not an even "
|
|
"multiple of backing device blocksize %u",
|
|
params->blocksize_bytes, tmp);
|
|
return (EINVAL);
|
|
}
|
|
} else if (params->blocksize_bytes != 0) {
|
|
dev_relthread(dev, ref);
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"requested blocksize %u < backing device "
|
|
"blocksize %u", params->blocksize_bytes, tmp);
|
|
return (EINVAL);
|
|
} else if (cbe_lun->lun_type == T_CDROM)
|
|
cbe_lun->blocksize = MAX(tmp, 2048);
|
|
else
|
|
cbe_lun->blocksize = tmp;
|
|
|
|
error = csw->d_ioctl(dev, DIOCGMEDIASIZE, (caddr_t)&otmp, FREAD,
|
|
curthread);
|
|
if (error) {
|
|
dev_relthread(dev, ref);
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"error %d returned for DIOCGMEDIASIZE "
|
|
" ioctl on %s!", error,
|
|
be_lun->dev_path);
|
|
return (error);
|
|
}
|
|
|
|
if (params->lun_size_bytes != 0) {
|
|
if (params->lun_size_bytes > otmp) {
|
|
dev_relthread(dev, ref);
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"requested LUN size %ju > backing device "
|
|
"size %ju",
|
|
(uintmax_t)params->lun_size_bytes,
|
|
(uintmax_t)otmp);
|
|
return (EINVAL);
|
|
}
|
|
|
|
be_lun->size_bytes = params->lun_size_bytes;
|
|
} else
|
|
be_lun->size_bytes = otmp;
|
|
be_lun->size_blocks = be_lun->size_bytes / cbe_lun->blocksize;
|
|
cbe_lun->maxlba = (be_lun->size_blocks == 0) ?
|
|
0 : (be_lun->size_blocks - 1);
|
|
|
|
error = csw->d_ioctl(dev, DIOCGSTRIPESIZE, (caddr_t)&ps, FREAD,
|
|
curthread);
|
|
if (error)
|
|
ps = po = 0;
|
|
else {
|
|
error = csw->d_ioctl(dev, DIOCGSTRIPEOFFSET, (caddr_t)&po,
|
|
FREAD, curthread);
|
|
if (error)
|
|
po = 0;
|
|
}
|
|
us = ps;
|
|
uo = po;
|
|
|
|
value = ctl_get_opt(&cbe_lun->options, "pblocksize");
|
|
if (value != NULL)
|
|
ctl_expand_number(value, &ps);
|
|
value = ctl_get_opt(&cbe_lun->options, "pblockoffset");
|
|
if (value != NULL)
|
|
ctl_expand_number(value, &po);
|
|
pss = ps / cbe_lun->blocksize;
|
|
pos = po / cbe_lun->blocksize;
|
|
if ((pss > 0) && (pss * cbe_lun->blocksize == ps) && (pss >= pos) &&
|
|
((pss & (pss - 1)) == 0) && (pos * cbe_lun->blocksize == po)) {
|
|
cbe_lun->pblockexp = fls(pss) - 1;
|
|
cbe_lun->pblockoff = (pss - pos) % pss;
|
|
}
|
|
|
|
value = ctl_get_opt(&cbe_lun->options, "ublocksize");
|
|
if (value != NULL)
|
|
ctl_expand_number(value, &us);
|
|
value = ctl_get_opt(&cbe_lun->options, "ublockoffset");
|
|
if (value != NULL)
|
|
ctl_expand_number(value, &uo);
|
|
uss = us / cbe_lun->blocksize;
|
|
uos = uo / cbe_lun->blocksize;
|
|
if ((uss > 0) && (uss * cbe_lun->blocksize == us) && (uss >= uos) &&
|
|
((uss & (uss - 1)) == 0) && (uos * cbe_lun->blocksize == uo)) {
|
|
cbe_lun->ublockexp = fls(uss) - 1;
|
|
cbe_lun->ublockoff = (uss - uos) % uss;
|
|
}
|
|
|
|
cbe_lun->atomicblock = atomic / cbe_lun->blocksize;
|
|
cbe_lun->opttxferlen = maxio / cbe_lun->blocksize;
|
|
|
|
if (be_lun->dispatch == ctl_be_block_dispatch_zvol) {
|
|
unmap = 1;
|
|
} else {
|
|
struct diocgattr_arg arg;
|
|
|
|
strlcpy(arg.name, "GEOM::candelete", sizeof(arg.name));
|
|
arg.len = sizeof(arg.value.i);
|
|
error = csw->d_ioctl(dev, DIOCGATTR, (caddr_t)&arg, FREAD,
|
|
curthread);
|
|
unmap = (error == 0) ? arg.value.i : 0;
|
|
}
|
|
value = ctl_get_opt(&cbe_lun->options, "unmap");
|
|
if (value != NULL)
|
|
unmap = (strcmp(value, "on") == 0);
|
|
if (unmap)
|
|
cbe_lun->flags |= CTL_LUN_FLAG_UNMAP;
|
|
else
|
|
cbe_lun->flags &= ~CTL_LUN_FLAG_UNMAP;
|
|
|
|
dev_relthread(dev, ref);
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ctl_be_block_close(struct ctl_be_block_lun *be_lun)
|
|
{
|
|
struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun;
|
|
int flags;
|
|
|
|
if (be_lun->vn) {
|
|
flags = FREAD;
|
|
if ((cbe_lun->flags & CTL_LUN_FLAG_READONLY) == 0)
|
|
flags |= FWRITE;
|
|
(void)vn_close(be_lun->vn, flags, NOCRED, curthread);
|
|
be_lun->vn = NULL;
|
|
|
|
switch (be_lun->dev_type) {
|
|
case CTL_BE_BLOCK_DEV:
|
|
break;
|
|
case CTL_BE_BLOCK_FILE:
|
|
if (be_lun->backend.file.cred != NULL) {
|
|
crfree(be_lun->backend.file.cred);
|
|
be_lun->backend.file.cred = NULL;
|
|
}
|
|
break;
|
|
case CTL_BE_BLOCK_NONE:
|
|
break;
|
|
default:
|
|
panic("Unexpected backend type %d", be_lun->dev_type);
|
|
break;
|
|
}
|
|
be_lun->dev_type = CTL_BE_BLOCK_NONE;
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ctl_be_block_open(struct ctl_be_block_lun *be_lun, struct ctl_lun_req *req)
|
|
{
|
|
struct ctl_be_lun *cbe_lun = &be_lun->cbe_lun;
|
|
struct nameidata nd;
|
|
char *value;
|
|
int error, flags;
|
|
|
|
error = 0;
|
|
if (rootvnode == NULL) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"Root filesystem is not mounted");
|
|
return (1);
|
|
}
|
|
pwd_ensure_dirs();
|
|
|
|
value = ctl_get_opt(&cbe_lun->options, "file");
|
|
if (value == NULL) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"no file argument specified");
|
|
return (1);
|
|
}
|
|
free(be_lun->dev_path, M_CTLBLK);
|
|
be_lun->dev_path = strdup(value, M_CTLBLK);
|
|
|
|
flags = FREAD;
|
|
value = ctl_get_opt(&cbe_lun->options, "readonly");
|
|
if (value != NULL) {
|
|
if (strcmp(value, "on") != 0)
|
|
flags |= FWRITE;
|
|
} else if (cbe_lun->lun_type == T_DIRECT)
|
|
flags |= FWRITE;
|
|
|
|
again:
|
|
NDINIT(&nd, LOOKUP, FOLLOW, UIO_SYSSPACE, be_lun->dev_path, curthread);
|
|
error = vn_open(&nd, &flags, 0, NULL);
|
|
if ((error == EROFS || error == EACCES) && (flags & FWRITE)) {
|
|
flags &= ~FWRITE;
|
|
goto again;
|
|
}
|
|
if (error) {
|
|
/*
|
|
* This is the only reasonable guess we can make as far as
|
|
* path if the user doesn't give us a fully qualified path.
|
|
* If they want to specify a file, they need to specify the
|
|
* full path.
|
|
*/
|
|
if (be_lun->dev_path[0] != '/') {
|
|
char *dev_name;
|
|
|
|
asprintf(&dev_name, M_CTLBLK, "/dev/%s",
|
|
be_lun->dev_path);
|
|
free(be_lun->dev_path, M_CTLBLK);
|
|
be_lun->dev_path = dev_name;
|
|
goto again;
|
|
}
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"error opening %s: %d", be_lun->dev_path, error);
|
|
return (error);
|
|
}
|
|
if (flags & FWRITE)
|
|
cbe_lun->flags &= ~CTL_LUN_FLAG_READONLY;
|
|
else
|
|
cbe_lun->flags |= CTL_LUN_FLAG_READONLY;
|
|
|
|
NDFREE(&nd, NDF_ONLY_PNBUF);
|
|
be_lun->vn = nd.ni_vp;
|
|
|
|
/* We only support disks and files. */
|
|
if (vn_isdisk(be_lun->vn, &error)) {
|
|
error = ctl_be_block_open_dev(be_lun, req);
|
|
} else if (be_lun->vn->v_type == VREG) {
|
|
error = ctl_be_block_open_file(be_lun, req);
|
|
} else {
|
|
error = EINVAL;
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"%s is not a disk or plain file", be_lun->dev_path);
|
|
}
|
|
VOP_UNLOCK(be_lun->vn, 0);
|
|
|
|
if (error != 0)
|
|
ctl_be_block_close(be_lun);
|
|
cbe_lun->serseq = CTL_LUN_SERSEQ_OFF;
|
|
if (be_lun->dispatch != ctl_be_block_dispatch_dev)
|
|
cbe_lun->serseq = CTL_LUN_SERSEQ_READ;
|
|
value = ctl_get_opt(&cbe_lun->options, "serseq");
|
|
if (value != NULL && strcmp(value, "on") == 0)
|
|
cbe_lun->serseq = CTL_LUN_SERSEQ_ON;
|
|
else if (value != NULL && strcmp(value, "read") == 0)
|
|
cbe_lun->serseq = CTL_LUN_SERSEQ_READ;
|
|
else if (value != NULL && strcmp(value, "off") == 0)
|
|
cbe_lun->serseq = CTL_LUN_SERSEQ_OFF;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ctl_be_block_create(struct ctl_be_block_softc *softc, struct ctl_lun_req *req)
|
|
{
|
|
struct ctl_be_lun *cbe_lun;
|
|
struct ctl_be_block_lun *be_lun;
|
|
struct ctl_lun_create_params *params;
|
|
char num_thread_str[16];
|
|
char tmpstr[32];
|
|
char *value;
|
|
int retval, num_threads;
|
|
int tmp_num_threads;
|
|
|
|
params = &req->reqdata.create;
|
|
retval = 0;
|
|
req->status = CTL_LUN_OK;
|
|
|
|
be_lun = malloc(sizeof(*be_lun), M_CTLBLK, M_ZERO | M_WAITOK);
|
|
cbe_lun = &be_lun->cbe_lun;
|
|
cbe_lun->be_lun = be_lun;
|
|
be_lun->params = req->reqdata.create;
|
|
be_lun->softc = softc;
|
|
STAILQ_INIT(&be_lun->input_queue);
|
|
STAILQ_INIT(&be_lun->config_read_queue);
|
|
STAILQ_INIT(&be_lun->config_write_queue);
|
|
STAILQ_INIT(&be_lun->datamove_queue);
|
|
sprintf(be_lun->lunname, "cblk%d", softc->num_luns);
|
|
mtx_init(&be_lun->io_lock, "cblk io lock", NULL, MTX_DEF);
|
|
mtx_init(&be_lun->queue_lock, "cblk queue lock", NULL, MTX_DEF);
|
|
ctl_init_opts(&cbe_lun->options,
|
|
req->num_be_args, req->kern_be_args);
|
|
be_lun->lun_zone = uma_zcreate(be_lun->lunname, CTLBLK_MAX_SEG,
|
|
NULL, NULL, NULL, NULL, /*align*/ 0, /*flags*/0);
|
|
if (be_lun->lun_zone == NULL) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"error allocating UMA zone");
|
|
goto bailout_error;
|
|
}
|
|
|
|
if (params->flags & CTL_LUN_FLAG_DEV_TYPE)
|
|
cbe_lun->lun_type = params->device_type;
|
|
else
|
|
cbe_lun->lun_type = T_DIRECT;
|
|
be_lun->flags = CTL_BE_BLOCK_LUN_UNCONFIGURED;
|
|
cbe_lun->flags = 0;
|
|
value = ctl_get_opt(&cbe_lun->options, "ha_role");
|
|
if (value != NULL) {
|
|
if (strcmp(value, "primary") == 0)
|
|
cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY;
|
|
} else if (control_softc->flags & CTL_FLAG_ACTIVE_SHELF)
|
|
cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY;
|
|
|
|
if (cbe_lun->lun_type == T_DIRECT ||
|
|
cbe_lun->lun_type == T_CDROM) {
|
|
be_lun->size_bytes = params->lun_size_bytes;
|
|
if (params->blocksize_bytes != 0)
|
|
cbe_lun->blocksize = params->blocksize_bytes;
|
|
else if (cbe_lun->lun_type == T_CDROM)
|
|
cbe_lun->blocksize = 2048;
|
|
else
|
|
cbe_lun->blocksize = 512;
|
|
be_lun->size_blocks = be_lun->size_bytes / cbe_lun->blocksize;
|
|
cbe_lun->maxlba = (be_lun->size_blocks == 0) ?
|
|
0 : (be_lun->size_blocks - 1);
|
|
|
|
if ((cbe_lun->flags & CTL_LUN_FLAG_PRIMARY) ||
|
|
control_softc->ha_mode == CTL_HA_MODE_SER_ONLY) {
|
|
retval = ctl_be_block_open(be_lun, req);
|
|
if (retval != 0) {
|
|
retval = 0;
|
|
req->status = CTL_LUN_WARNING;
|
|
}
|
|
}
|
|
num_threads = cbb_num_threads;
|
|
} else {
|
|
num_threads = 1;
|
|
}
|
|
|
|
value = ctl_get_opt(&cbe_lun->options, "num_threads");
|
|
if (value != NULL) {
|
|
tmp_num_threads = strtol(value, NULL, 0);
|
|
|
|
/*
|
|
* We don't let the user specify less than one
|
|
* thread, but hope he's clueful enough not to
|
|
* specify 1000 threads.
|
|
*/
|
|
if (tmp_num_threads < 1) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"invalid number of threads %s",
|
|
num_thread_str);
|
|
goto bailout_error;
|
|
}
|
|
num_threads = tmp_num_threads;
|
|
}
|
|
|
|
if (be_lun->vn == NULL)
|
|
cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA;
|
|
/* Tell the user the blocksize we ended up using */
|
|
params->lun_size_bytes = be_lun->size_bytes;
|
|
params->blocksize_bytes = cbe_lun->blocksize;
|
|
if (params->flags & CTL_LUN_FLAG_ID_REQ) {
|
|
cbe_lun->req_lun_id = params->req_lun_id;
|
|
cbe_lun->flags |= CTL_LUN_FLAG_ID_REQ;
|
|
} else
|
|
cbe_lun->req_lun_id = 0;
|
|
|
|
cbe_lun->lun_shutdown = ctl_be_block_lun_shutdown;
|
|
cbe_lun->lun_config_status = ctl_be_block_lun_config_status;
|
|
cbe_lun->be = &ctl_be_block_driver;
|
|
|
|
if ((params->flags & CTL_LUN_FLAG_SERIAL_NUM) == 0) {
|
|
snprintf(tmpstr, sizeof(tmpstr), "MYSERIAL%4d",
|
|
softc->num_luns);
|
|
strncpy((char *)cbe_lun->serial_num, tmpstr,
|
|
MIN(sizeof(cbe_lun->serial_num), sizeof(tmpstr)));
|
|
|
|
/* Tell the user what we used for a serial number */
|
|
strncpy((char *)params->serial_num, tmpstr,
|
|
MIN(sizeof(params->serial_num), sizeof(tmpstr)));
|
|
} else {
|
|
strncpy((char *)cbe_lun->serial_num, params->serial_num,
|
|
MIN(sizeof(cbe_lun->serial_num),
|
|
sizeof(params->serial_num)));
|
|
}
|
|
if ((params->flags & CTL_LUN_FLAG_DEVID) == 0) {
|
|
snprintf(tmpstr, sizeof(tmpstr), "MYDEVID%4d", softc->num_luns);
|
|
strncpy((char *)cbe_lun->device_id, tmpstr,
|
|
MIN(sizeof(cbe_lun->device_id), sizeof(tmpstr)));
|
|
|
|
/* Tell the user what we used for a device ID */
|
|
strncpy((char *)params->device_id, tmpstr,
|
|
MIN(sizeof(params->device_id), sizeof(tmpstr)));
|
|
} else {
|
|
strncpy((char *)cbe_lun->device_id, params->device_id,
|
|
MIN(sizeof(cbe_lun->device_id),
|
|
sizeof(params->device_id)));
|
|
}
|
|
|
|
TASK_INIT(&be_lun->io_task, /*priority*/0, ctl_be_block_worker, be_lun);
|
|
|
|
be_lun->io_taskqueue = taskqueue_create(be_lun->lunname, M_WAITOK,
|
|
taskqueue_thread_enqueue, /*context*/&be_lun->io_taskqueue);
|
|
|
|
if (be_lun->io_taskqueue == NULL) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"unable to create taskqueue");
|
|
goto bailout_error;
|
|
}
|
|
|
|
/*
|
|
* Note that we start the same number of threads by default for
|
|
* both the file case and the block device case. For the file
|
|
* case, we need multiple threads to allow concurrency, because the
|
|
* vnode interface is designed to be a blocking interface. For the
|
|
* block device case, ZFS zvols at least will block the caller's
|
|
* context in many instances, and so we need multiple threads to
|
|
* overcome that problem. Other block devices don't need as many
|
|
* threads, but they shouldn't cause too many problems.
|
|
*
|
|
* If the user wants to just have a single thread for a block
|
|
* device, he can specify that when the LUN is created, or change
|
|
* the tunable/sysctl to alter the default number of threads.
|
|
*/
|
|
retval = taskqueue_start_threads(&be_lun->io_taskqueue,
|
|
/*num threads*/num_threads,
|
|
/*priority*/PWAIT,
|
|
/*thread name*/
|
|
"%s taskq", be_lun->lunname);
|
|
|
|
if (retval != 0)
|
|
goto bailout_error;
|
|
|
|
be_lun->num_threads = num_threads;
|
|
|
|
mtx_lock(&softc->lock);
|
|
softc->num_luns++;
|
|
STAILQ_INSERT_TAIL(&softc->lun_list, be_lun, links);
|
|
|
|
mtx_unlock(&softc->lock);
|
|
|
|
retval = ctl_add_lun(&be_lun->cbe_lun);
|
|
if (retval != 0) {
|
|
mtx_lock(&softc->lock);
|
|
STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_block_lun,
|
|
links);
|
|
softc->num_luns--;
|
|
mtx_unlock(&softc->lock);
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"ctl_add_lun() returned error %d, see dmesg for "
|
|
"details", retval);
|
|
retval = 0;
|
|
goto bailout_error;
|
|
}
|
|
|
|
mtx_lock(&softc->lock);
|
|
|
|
/*
|
|
* Tell the config_status routine that we're waiting so it won't
|
|
* clean up the LUN in the event of an error.
|
|
*/
|
|
be_lun->flags |= CTL_BE_BLOCK_LUN_WAITING;
|
|
|
|
while (be_lun->flags & CTL_BE_BLOCK_LUN_UNCONFIGURED) {
|
|
retval = msleep(be_lun, &softc->lock, PCATCH, "ctlblk", 0);
|
|
if (retval == EINTR)
|
|
break;
|
|
}
|
|
be_lun->flags &= ~CTL_BE_BLOCK_LUN_WAITING;
|
|
|
|
if (be_lun->flags & CTL_BE_BLOCK_LUN_CONFIG_ERR) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"LUN configuration error, see dmesg for details");
|
|
STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_block_lun,
|
|
links);
|
|
softc->num_luns--;
|
|
mtx_unlock(&softc->lock);
|
|
goto bailout_error;
|
|
} else {
|
|
params->req_lun_id = cbe_lun->lun_id;
|
|
}
|
|
|
|
mtx_unlock(&softc->lock);
|
|
|
|
be_lun->disk_stats = devstat_new_entry("cbb", params->req_lun_id,
|
|
cbe_lun->blocksize,
|
|
DEVSTAT_ALL_SUPPORTED,
|
|
cbe_lun->lun_type
|
|
| DEVSTAT_TYPE_IF_OTHER,
|
|
DEVSTAT_PRIORITY_OTHER);
|
|
|
|
return (retval);
|
|
|
|
bailout_error:
|
|
req->status = CTL_LUN_ERROR;
|
|
|
|
if (be_lun->io_taskqueue != NULL)
|
|
taskqueue_free(be_lun->io_taskqueue);
|
|
ctl_be_block_close(be_lun);
|
|
if (be_lun->dev_path != NULL)
|
|
free(be_lun->dev_path, M_CTLBLK);
|
|
if (be_lun->lun_zone != NULL)
|
|
uma_zdestroy(be_lun->lun_zone);
|
|
ctl_free_opts(&cbe_lun->options);
|
|
mtx_destroy(&be_lun->queue_lock);
|
|
mtx_destroy(&be_lun->io_lock);
|
|
free(be_lun, M_CTLBLK);
|
|
|
|
return (retval);
|
|
}
|
|
|
|
static int
|
|
ctl_be_block_rm(struct ctl_be_block_softc *softc, struct ctl_lun_req *req)
|
|
{
|
|
struct ctl_lun_rm_params *params;
|
|
struct ctl_be_block_lun *be_lun;
|
|
struct ctl_be_lun *cbe_lun;
|
|
int retval;
|
|
|
|
params = &req->reqdata.rm;
|
|
|
|
mtx_lock(&softc->lock);
|
|
STAILQ_FOREACH(be_lun, &softc->lun_list, links) {
|
|
if (be_lun->cbe_lun.lun_id == params->lun_id)
|
|
break;
|
|
}
|
|
mtx_unlock(&softc->lock);
|
|
if (be_lun == NULL) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"LUN %u is not managed by the block backend",
|
|
params->lun_id);
|
|
goto bailout_error;
|
|
}
|
|
cbe_lun = &be_lun->cbe_lun;
|
|
|
|
retval = ctl_disable_lun(cbe_lun);
|
|
if (retval != 0) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"error %d returned from ctl_disable_lun() for "
|
|
"LUN %d", retval, params->lun_id);
|
|
goto bailout_error;
|
|
}
|
|
|
|
if (be_lun->vn != NULL) {
|
|
cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA;
|
|
ctl_lun_no_media(cbe_lun);
|
|
taskqueue_drain_all(be_lun->io_taskqueue);
|
|
ctl_be_block_close(be_lun);
|
|
}
|
|
|
|
retval = ctl_invalidate_lun(cbe_lun);
|
|
if (retval != 0) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"error %d returned from ctl_invalidate_lun() for "
|
|
"LUN %d", retval, params->lun_id);
|
|
goto bailout_error;
|
|
}
|
|
|
|
mtx_lock(&softc->lock);
|
|
be_lun->flags |= CTL_BE_BLOCK_LUN_WAITING;
|
|
while ((be_lun->flags & CTL_BE_BLOCK_LUN_UNCONFIGURED) == 0) {
|
|
retval = msleep(be_lun, &softc->lock, PCATCH, "ctlblk", 0);
|
|
if (retval == EINTR)
|
|
break;
|
|
}
|
|
be_lun->flags &= ~CTL_BE_BLOCK_LUN_WAITING;
|
|
|
|
if ((be_lun->flags & CTL_BE_BLOCK_LUN_UNCONFIGURED) == 0) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"interrupted waiting for LUN to be freed");
|
|
mtx_unlock(&softc->lock);
|
|
goto bailout_error;
|
|
}
|
|
|
|
STAILQ_REMOVE(&softc->lun_list, be_lun, ctl_be_block_lun, links);
|
|
|
|
softc->num_luns--;
|
|
mtx_unlock(&softc->lock);
|
|
|
|
taskqueue_drain_all(be_lun->io_taskqueue);
|
|
taskqueue_free(be_lun->io_taskqueue);
|
|
|
|
if (be_lun->disk_stats != NULL)
|
|
devstat_remove_entry(be_lun->disk_stats);
|
|
|
|
uma_zdestroy(be_lun->lun_zone);
|
|
|
|
ctl_free_opts(&cbe_lun->options);
|
|
free(be_lun->dev_path, M_CTLBLK);
|
|
mtx_destroy(&be_lun->queue_lock);
|
|
mtx_destroy(&be_lun->io_lock);
|
|
free(be_lun, M_CTLBLK);
|
|
|
|
req->status = CTL_LUN_OK;
|
|
return (0);
|
|
|
|
bailout_error:
|
|
req->status = CTL_LUN_ERROR;
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
ctl_be_block_modify(struct ctl_be_block_softc *softc, struct ctl_lun_req *req)
|
|
{
|
|
struct ctl_lun_modify_params *params;
|
|
struct ctl_be_block_lun *be_lun;
|
|
struct ctl_be_lun *cbe_lun;
|
|
char *value;
|
|
uint64_t oldsize;
|
|
int error, wasprim;
|
|
|
|
params = &req->reqdata.modify;
|
|
|
|
mtx_lock(&softc->lock);
|
|
STAILQ_FOREACH(be_lun, &softc->lun_list, links) {
|
|
if (be_lun->cbe_lun.lun_id == params->lun_id)
|
|
break;
|
|
}
|
|
mtx_unlock(&softc->lock);
|
|
if (be_lun == NULL) {
|
|
snprintf(req->error_str, sizeof(req->error_str),
|
|
"LUN %u is not managed by the block backend",
|
|
params->lun_id);
|
|
goto bailout_error;
|
|
}
|
|
cbe_lun = &be_lun->cbe_lun;
|
|
|
|
if (params->lun_size_bytes != 0)
|
|
be_lun->params.lun_size_bytes = params->lun_size_bytes;
|
|
ctl_update_opts(&cbe_lun->options, req->num_be_args, req->kern_be_args);
|
|
|
|
wasprim = (cbe_lun->flags & CTL_LUN_FLAG_PRIMARY);
|
|
value = ctl_get_opt(&cbe_lun->options, "ha_role");
|
|
if (value != NULL) {
|
|
if (strcmp(value, "primary") == 0)
|
|
cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY;
|
|
else
|
|
cbe_lun->flags &= ~CTL_LUN_FLAG_PRIMARY;
|
|
} else if (control_softc->flags & CTL_FLAG_ACTIVE_SHELF)
|
|
cbe_lun->flags |= CTL_LUN_FLAG_PRIMARY;
|
|
else
|
|
cbe_lun->flags &= ~CTL_LUN_FLAG_PRIMARY;
|
|
if (wasprim != (cbe_lun->flags & CTL_LUN_FLAG_PRIMARY)) {
|
|
if (cbe_lun->flags & CTL_LUN_FLAG_PRIMARY)
|
|
ctl_lun_primary(cbe_lun);
|
|
else
|
|
ctl_lun_secondary(cbe_lun);
|
|
}
|
|
|
|
oldsize = be_lun->size_blocks;
|
|
if ((cbe_lun->flags & CTL_LUN_FLAG_PRIMARY) ||
|
|
control_softc->ha_mode == CTL_HA_MODE_SER_ONLY) {
|
|
if (be_lun->vn == NULL)
|
|
error = ctl_be_block_open(be_lun, req);
|
|
else if (vn_isdisk(be_lun->vn, &error))
|
|
error = ctl_be_block_open_dev(be_lun, req);
|
|
else if (be_lun->vn->v_type == VREG) {
|
|
vn_lock(be_lun->vn, LK_SHARED | LK_RETRY);
|
|
error = ctl_be_block_open_file(be_lun, req);
|
|
VOP_UNLOCK(be_lun->vn, 0);
|
|
} else
|
|
error = EINVAL;
|
|
if ((cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) &&
|
|
be_lun->vn != NULL) {
|
|
cbe_lun->flags &= ~CTL_LUN_FLAG_NO_MEDIA;
|
|
ctl_lun_has_media(cbe_lun);
|
|
} else if ((cbe_lun->flags & CTL_LUN_FLAG_NO_MEDIA) == 0 &&
|
|
be_lun->vn == NULL) {
|
|
cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA;
|
|
ctl_lun_no_media(cbe_lun);
|
|
}
|
|
cbe_lun->flags &= ~CTL_LUN_FLAG_EJECTED;
|
|
} else {
|
|
if (be_lun->vn != NULL) {
|
|
cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA;
|
|
ctl_lun_no_media(cbe_lun);
|
|
taskqueue_drain_all(be_lun->io_taskqueue);
|
|
error = ctl_be_block_close(be_lun);
|
|
} else
|
|
error = 0;
|
|
}
|
|
if (be_lun->size_blocks != oldsize)
|
|
ctl_lun_capacity_changed(cbe_lun);
|
|
|
|
/* Tell the user the exact size we ended up using */
|
|
params->lun_size_bytes = be_lun->size_bytes;
|
|
|
|
req->status = error ? CTL_LUN_WARNING : CTL_LUN_OK;
|
|
return (0);
|
|
|
|
bailout_error:
|
|
req->status = CTL_LUN_ERROR;
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_lun_shutdown(void *be_lun)
|
|
{
|
|
struct ctl_be_block_lun *lun;
|
|
struct ctl_be_block_softc *softc;
|
|
|
|
lun = (struct ctl_be_block_lun *)be_lun;
|
|
softc = lun->softc;
|
|
|
|
mtx_lock(&softc->lock);
|
|
lun->flags |= CTL_BE_BLOCK_LUN_UNCONFIGURED;
|
|
if (lun->flags & CTL_BE_BLOCK_LUN_WAITING)
|
|
wakeup(lun);
|
|
mtx_unlock(&softc->lock);
|
|
}
|
|
|
|
static void
|
|
ctl_be_block_lun_config_status(void *be_lun, ctl_lun_config_status status)
|
|
{
|
|
struct ctl_be_block_lun *lun;
|
|
struct ctl_be_block_softc *softc;
|
|
|
|
lun = (struct ctl_be_block_lun *)be_lun;
|
|
softc = lun->softc;
|
|
|
|
if (status == CTL_LUN_CONFIG_OK) {
|
|
mtx_lock(&softc->lock);
|
|
lun->flags &= ~CTL_BE_BLOCK_LUN_UNCONFIGURED;
|
|
if (lun->flags & CTL_BE_BLOCK_LUN_WAITING)
|
|
wakeup(lun);
|
|
mtx_unlock(&softc->lock);
|
|
|
|
/*
|
|
* We successfully added the LUN, attempt to enable it.
|
|
*/
|
|
if (ctl_enable_lun(&lun->cbe_lun) != 0) {
|
|
printf("%s: ctl_enable_lun() failed!\n", __func__);
|
|
if (ctl_invalidate_lun(&lun->cbe_lun) != 0) {
|
|
printf("%s: ctl_invalidate_lun() failed!\n",
|
|
__func__);
|
|
}
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
mtx_lock(&softc->lock);
|
|
lun->flags &= ~CTL_BE_BLOCK_LUN_UNCONFIGURED;
|
|
lun->flags |= CTL_BE_BLOCK_LUN_CONFIG_ERR;
|
|
wakeup(lun);
|
|
mtx_unlock(&softc->lock);
|
|
}
|
|
|
|
|
|
static int
|
|
ctl_be_block_config_write(union ctl_io *io)
|
|
{
|
|
struct ctl_be_block_lun *be_lun;
|
|
struct ctl_be_lun *cbe_lun;
|
|
int retval;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
cbe_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[
|
|
CTL_PRIV_BACKEND_LUN].ptr;
|
|
be_lun = (struct ctl_be_block_lun *)cbe_lun->be_lun;
|
|
|
|
retval = 0;
|
|
switch (io->scsiio.cdb[0]) {
|
|
case SYNCHRONIZE_CACHE:
|
|
case SYNCHRONIZE_CACHE_16:
|
|
case WRITE_SAME_10:
|
|
case WRITE_SAME_16:
|
|
case UNMAP:
|
|
/*
|
|
* The upper level CTL code will filter out any CDBs with
|
|
* the immediate bit set and return the proper error.
|
|
*
|
|
* We don't really need to worry about what LBA range the
|
|
* user asked to be synced out. When they issue a sync
|
|
* cache command, we'll sync out the whole thing.
|
|
*/
|
|
mtx_lock(&be_lun->queue_lock);
|
|
STAILQ_INSERT_TAIL(&be_lun->config_write_queue, &io->io_hdr,
|
|
links);
|
|
mtx_unlock(&be_lun->queue_lock);
|
|
taskqueue_enqueue(be_lun->io_taskqueue, &be_lun->io_task);
|
|
break;
|
|
case START_STOP_UNIT: {
|
|
struct scsi_start_stop_unit *cdb;
|
|
struct ctl_lun_req req;
|
|
|
|
cdb = (struct scsi_start_stop_unit *)io->scsiio.cdb;
|
|
if ((cdb->how & SSS_PC_MASK) != 0) {
|
|
ctl_set_success(&io->scsiio);
|
|
ctl_config_write_done(io);
|
|
break;
|
|
}
|
|
if (cdb->how & SSS_START) {
|
|
if ((cdb->how & SSS_LOEJ) && be_lun->vn == NULL) {
|
|
retval = ctl_be_block_open(be_lun, &req);
|
|
cbe_lun->flags &= ~CTL_LUN_FLAG_EJECTED;
|
|
if (retval == 0) {
|
|
cbe_lun->flags &= ~CTL_LUN_FLAG_NO_MEDIA;
|
|
ctl_lun_has_media(cbe_lun);
|
|
} else {
|
|
cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA;
|
|
ctl_lun_no_media(cbe_lun);
|
|
}
|
|
}
|
|
ctl_start_lun(cbe_lun);
|
|
} else {
|
|
ctl_stop_lun(cbe_lun);
|
|
if (cdb->how & SSS_LOEJ) {
|
|
cbe_lun->flags |= CTL_LUN_FLAG_NO_MEDIA;
|
|
cbe_lun->flags |= CTL_LUN_FLAG_EJECTED;
|
|
ctl_lun_ejected(cbe_lun);
|
|
if (be_lun->vn != NULL)
|
|
ctl_be_block_close(be_lun);
|
|
}
|
|
}
|
|
|
|
ctl_set_success(&io->scsiio);
|
|
ctl_config_write_done(io);
|
|
break;
|
|
}
|
|
case PREVENT_ALLOW:
|
|
ctl_set_success(&io->scsiio);
|
|
ctl_config_write_done(io);
|
|
break;
|
|
default:
|
|
ctl_set_invalid_opcode(&io->scsiio);
|
|
ctl_config_write_done(io);
|
|
retval = CTL_RETVAL_COMPLETE;
|
|
break;
|
|
}
|
|
|
|
return (retval);
|
|
}
|
|
|
|
static int
|
|
ctl_be_block_config_read(union ctl_io *io)
|
|
{
|
|
struct ctl_be_block_lun *be_lun;
|
|
struct ctl_be_lun *cbe_lun;
|
|
int retval = 0;
|
|
|
|
DPRINTF("entered\n");
|
|
|
|
cbe_lun = (struct ctl_be_lun *)io->io_hdr.ctl_private[
|
|
CTL_PRIV_BACKEND_LUN].ptr;
|
|
be_lun = (struct ctl_be_block_lun *)cbe_lun->be_lun;
|
|
|
|
switch (io->scsiio.cdb[0]) {
|
|
case SERVICE_ACTION_IN:
|
|
if (io->scsiio.cdb[1] == SGLS_SERVICE_ACTION) {
|
|
mtx_lock(&be_lun->queue_lock);
|
|
STAILQ_INSERT_TAIL(&be_lun->config_read_queue,
|
|
&io->io_hdr, links);
|
|
mtx_unlock(&be_lun->queue_lock);
|
|
taskqueue_enqueue(be_lun->io_taskqueue,
|
|
&be_lun->io_task);
|
|
retval = CTL_RETVAL_QUEUED;
|
|
break;
|
|
}
|
|
ctl_set_invalid_field(&io->scsiio,
|
|
/*sks_valid*/ 1,
|
|
/*command*/ 1,
|
|
/*field*/ 1,
|
|
/*bit_valid*/ 1,
|
|
/*bit*/ 4);
|
|
ctl_config_read_done(io);
|
|
retval = CTL_RETVAL_COMPLETE;
|
|
break;
|
|
default:
|
|
ctl_set_invalid_opcode(&io->scsiio);
|
|
ctl_config_read_done(io);
|
|
retval = CTL_RETVAL_COMPLETE;
|
|
break;
|
|
}
|
|
|
|
return (retval);
|
|
}
|
|
|
|
static int
|
|
ctl_be_block_lun_info(void *be_lun, struct sbuf *sb)
|
|
{
|
|
struct ctl_be_block_lun *lun;
|
|
int retval;
|
|
|
|
lun = (struct ctl_be_block_lun *)be_lun;
|
|
|
|
retval = sbuf_printf(sb, "\t<num_threads>");
|
|
if (retval != 0)
|
|
goto bailout;
|
|
retval = sbuf_printf(sb, "%d", lun->num_threads);
|
|
if (retval != 0)
|
|
goto bailout;
|
|
retval = sbuf_printf(sb, "</num_threads>\n");
|
|
|
|
bailout:
|
|
return (retval);
|
|
}
|
|
|
|
static uint64_t
|
|
ctl_be_block_lun_attr(void *be_lun, const char *attrname)
|
|
{
|
|
struct ctl_be_block_lun *lun = (struct ctl_be_block_lun *)be_lun;
|
|
|
|
if (lun->getattr == NULL)
|
|
return (UINT64_MAX);
|
|
return (lun->getattr(lun, attrname));
|
|
}
|
|
|
|
int
|
|
ctl_be_block_init(void)
|
|
{
|
|
struct ctl_be_block_softc *softc;
|
|
int retval;
|
|
|
|
softc = &backend_block_softc;
|
|
retval = 0;
|
|
|
|
mtx_init(&softc->lock, "ctlblock", NULL, MTX_DEF);
|
|
beio_zone = uma_zcreate("beio", sizeof(struct ctl_be_block_io),
|
|
NULL, NULL, NULL, NULL, UMA_ALIGN_PTR, 0);
|
|
STAILQ_INIT(&softc->lun_list);
|
|
|
|
return (retval);
|
|
}
|