Add a new helper that calls blk_get_request and initializes the
scsi_request to avoid the indirect call through ->.initialize_rq_fn.
Note that this makes the pktcdvd driver depend on the SCSI core, but
given that only SCSI devices support SCSI passthrough requests that
is not a functional change.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20211021060607.264371-6-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
When userspace changes the LUN's ALUA group, it will set the LUN's group to
NULL then to the new group. Before the new group is set,
target_alua_state_check() will return 0 and allow the I/O to execute. This
has us skip the NULL stage, and just swap in the new group.
Link: https://lore.kernel.org/r/20210930020422.92578-6-michael.christie@oracle.com
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
We are only holding the lun_tg_pt_gp_lock in target_alua_state_check() to
make sure tg_pt_gp is not freed from under us while we copy the state,
delay, ID values. We can instead use RCU here to access the tg_pt_gp.
With this patch IOPs can increase up to 10% for jobs like:
fio --filename=/dev/sdX --direct=1 --rw=randrw --bs=4k \
--ioengine=libaio --iodepth=64 --numjobs=N
when there are multiple sessions (running that fio command to each /dev/sdX
or using multipath and there are over 8 paths), or more than 8 queues for
the loop or vhost with multiple threads case and numjobs > 8.
Link: https://lore.kernel.org/r/20210930020422.92578-5-michael.christie@oracle.com
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
We can't free the tg_pt_gp in core_alua_set_tg_pt_gp_id() because it's
still accessed via configfs. Its release must go through the normal
configfs/refcount process.
The max alua_tg_pt_gps_count check should probably have been done in
core_alua_allocate_tg_pt_gp(), but with the current code userspace could
have created 0x0000ffff + 1 groups, but only set the id for 0x0000ffff.
Then it could have deleted a group with an ID set, and then set the ID for
that extra group and it would work ok.
It's unlikely, but just in case this patch continues to allow that type of
behavior, and just fixes the kfree() while in use bug.
Link: https://lore.kernel.org/r/20210930020422.92578-4-michael.christie@oracle.com
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This patch fixes the following bugs:
1. If there are multiple ordered cmds queued and multiple simple cmds
completing, target_restart_delayed_cmds() could be called on different
CPUs and each instance could start a ordered cmd. They could then run in
different orders than they were queued.
2. target_restart_delayed_cmds() and target_handle_task_attr() can race
where:
1. target_handle_task_attr() has passed the simple_cmds == 0 check.
2. transport_complete_task_attr() then decrements simple_cmds to 0.
3. transport_complete_task_attr() runs target_restart_delayed_cmds() and
it does not see any cmds on the delayed_cmd_list.
4. target_handle_task_attr() adds the cmd to the delayed_cmd_list.
The cmd will then end up timing out.
3. If we are sent > 1 ordered cmds and simple_cmds == 0, we can execute
them out of order, because target_handle_task_attr() will hit that
simple_cmds check first and return false for all ordered cmds sent.
4. We run target_restart_delayed_cmds() after every cmd completion, so if
there is more than 1 simple cmd running, we start executing ordered cmds
after that first cmd instead of waiting for all of them to complete.
5. Ordered cmds are not supposed to start until HEAD OF QUEUE and all older
cmds have completed, and not just simple.
6. It's not a bug but it doesn't make sense to take the delayed_cmd_lock
for every cmd completion when ordered cmds are almost never used. Just
replacing that lock with an atomic increases IOPs by up to 10% when
completions are spread over multiple CPUs and there are multiple
sessions/ mqs/thread accessing the same device.
This patch moves the queued delayed handling to a per device work to
serialze the cmd executions for each device and adds a new counter to track
HEAD_OF_QUEUE and SIMPLE cmds. We can then check the new counter to
determine when to run the work on the completion path.
Link: https://lore.kernel.org/r/20210930020422.92578-3-michael.christie@oracle.com
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
We can race where target_handle_task_attr() has put the cmd on the
delayed_cmd_list. Then target_restart_delayed_cmds() has removed it and set
CMD_T_SENT, but then target_execute_cmd() now clears that bit.
This patch moves the clearing to before we've put the cmd on the list.
Link: https://lore.kernel.org/r/20210930020422.92578-2-michael.christie@oracle.com
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Tcmu populates the data area (used for communication with userspace) with
pages that are allocated by calling alloc_page(GFP_NOIO). Therefore
previous content of the allocated pages is exposed to user space. Avoid
this by adding __GFP_ZERO flag.
Zeroing the pages does (nearly) not affect tcmu throughput, because
allocated pages are re-used for the data transfers of later SCSI cmds.
Link: https://lore.kernel.org/r/20211013171606.25197-1-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Current value of max DataSegmentLength is 8K. T5/T6 adapters support
DataSegmentLength upto 16K. Increase max DataSegmentLength.
Link: https://lore.kernel.org/r/1634135087-4996-1-git-send-email-varun@chelsio.com
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
struct request is only used by blk-mq drivers, so move it and all
related declarations to blk-mq.h.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20210920123328.1399408-18-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Split the integrity/metadata handling definitions out into a new header.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Link: https://lore.kernel.org/r/20210920123328.1399408-17-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Conditional statements are faster than indirect calls. Hence call
scsi_done() directly.
Link: https://lore.kernel.org/r/20211007204618.2196847-9-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Merge the 5.15/scsi-fixes branch into the staging tree to resolve UFS
conflict reported by sfr.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Make use of the struct_size() helper instead of an open-coded version, in
order to avoid any potential type mistakes or integer overflows that, in
the worst scenario, could lead to heap overflows.
Link: https://github.com/KSPP/linux/issues/160
Link: https://lore.kernel.org/r/20210927224344.GA190701@embeddedor
Reviewed-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Many fabric modules provide their own implementation of enable attribute in
tpg.
Provide a way to remove code duplication in the fabric modules and
automatically add "enable" attribute if a fabric module has an
implementation of fabric_enable_tpg().
Link: https://lore.kernel.org/r/20210910084133.17956-2-d.bogdanov@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Dmitry Bogdanov <d.bogdanov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Change the log level of the following message to debug:
Unsupported SCSI Opcode 0xXX, sending CHECK_CONDITION.
This message is mostly helpful during debugging sessions in order to
understand errors on the initiator side. But most of the time it's just
useless and makes reading logs much harder.
It gets particularly annoying if there are many initiators that come and go
or if an initiator runs a program that does not care whether the command is
supported and just keeps sending it.
Link: https://lore.kernel.org/r/20210929114959.705852-1-k.shelekhin@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The se_cmd is unused in these functions, just remove it.
Link: https://lore.kernel.org/r/20210913083045.3670648-1-fengli@smartx.com
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Li Feng <fengli@smartx.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Commit 356ba2a8bc ("scsi: target: tcmu: Make pgr_support and alua_support
attributes writable") introduced support for changeable alua_support and
pgr_support target attributes. These can only be changed if the backstore
is user-backed, otherwise the kernel returns -EINVAL.
This triggers a warning in the targetcli/rtslib code when performing a
target restore that includes non-userbacked backstores:
# targetctl restore
Storage Object block/storage1: Cannot set attribute alua_support:
[Errno 22] Invalid argument, skipped
Storage Object block/storage1: Cannot set attribute pgr_support:
[Errno 22] Invalid argument, skipped
Fix this warning by returning an error code only if we are really going to
flip the PGR/ALUA bit in the transport_flags field, otherwise we will do
nothing and return success.
Return ENOSYS instead of EINVAL if the pgr/alua attributes can not be
changed, this way it will be possible for userspace to understand if the
operation failed because an invalid value has been passed to strtobool() or
because the attributes are fixed.
Fixes: 356ba2a8bc ("scsi: target: tcmu: Make pgr_support and alua_support attributes writable")
Link: https://lore.kernel.org/r/20210906151809.52811-1-mlombard@redhat.com
Reviewed-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This series consists of the usual driver updates (ufs, qla2xxx,
target, smartpqi, lpfc, mpt3sas). The core change causing the most
churn was replacing the command request field request with a macro,
allowing us to offset map to it and remove the redundant field; the
same was also done for the tag field. The most impactful change is
the final removal of scsi_ioctl, which has been deprecated for over a
decade.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This series consists of the usual driver updates (ufs, qla2xxx,
target, smartpqi, lpfc, mpt3sas).
The core change causing the most churn was replacing the command
request field request with a macro, allowing us to offset map to it
and remove the redundant field; the same was also done for the tag
field.
The most impactful change is the final removal of scsi_ioctl, which
has been deprecated for over a decade"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (293 commits)
scsi: ufs: Fix ufshcd_request_sense_async() for Samsung KLUFG8RHDA-B2D1
scsi: ufs: ufs-exynos: Fix static checker warning
scsi: mpt3sas: Use the proper SCSI midlayer interfaces for PI
scsi: lpfc: Use the proper SCSI midlayer interfaces for PI
scsi: lpfc: Copyright updates for 14.0.0.1 patches
scsi: lpfc: Update lpfc version to 14.0.0.1
scsi: lpfc: Add bsg support for retrieving adapter cmf data
scsi: lpfc: Add cmf_info sysfs entry
scsi: lpfc: Add debugfs support for cm framework buffers
scsi: lpfc: Add support for maintaining the cm statistics buffer
scsi: lpfc: Add rx monitoring statistics
scsi: lpfc: Add support for the CM framework
scsi: lpfc: Add cmfsync WQE support
scsi: lpfc: Add support for cm enablement buffer
scsi: lpfc: Add cm statistics buffer support
scsi: lpfc: Add EDC ELS support
scsi: lpfc: Expand FPIN and RDF receive logging
scsi: lpfc: Add MIB feature enablement support
scsi: lpfc: Add SET_HOST_DATA mbox cmd to pass date/time info to firmware
scsi: fc: Add EDC ELS definition
...
TCM fails to pass the following tests in libiscsi:
SCSI.ExtendedCopy.DescrType
SCSI.ExtendedCopy.DescrLimits
SCSI.ExtendedCopy.ParamHdr
SCSI.ExtendedCopy.ValidSegDescr
SCSI.ExtendedCopy.ValidTgtDescr
The xcopy code always returns the same NOT READY sense key for all detected
errors. Change the sense key for invalid requests to ILLEGAL REQUEST, and
for aborted transfers to COPY ABORTED.
Link: https://lore.kernel.org/r/20210803145410.80147-3-s.samoylenko@yadro.com
Fixes: d877d7275b ("target: Fix a deadlock between the XCOPY code and iSCSI session shutdown")
Reviewed-by: David Disseldorp <ddiss@suse.de>
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Signed-off-by: Sergey Samoylenko <s.samoylenko@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Currently, backend drivers can fail I/O with SAM_STAT_CHECK_CONDITION which
gets us TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE.
Add a new helper that allows backend drivers to fail with specific sense
codes.
This is based on a patch from Mike Christie <michael.christie@oracle.com>.
Cc: Mike Christie <michael.christie@oracle.com>
Link: https://lore.kernel.org/r/20210803145410.80147-2-s.samoylenko@yadro.com
Reviewed-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Sergey Samoylenko <s.samoylenko@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The return value of transport_kmap_data_sg() is assigned to the variable
buf:
buf = transport_kmap_data_sg(cmd);
And then it is checked:
if (!buf) {
This indicates that buf can be NULL. However, it is dereferenced in the
following statements:
if (!(buf[3] & 0x80))
buf[3] |= 0x80;
if (!(buf[2] & 0x80))
buf[2] |= 0x80;
To fix these possible null-pointer dereferences, dereference buf and call
transport_kunmap_data_sg() only when buf is not NULL.
Link: https://lore.kernel.org/r/20210810040414.248167-1-islituo@gmail.com
Reported-by: TOTE Robot <oslab@tsinghua.edu.cn>
Reviewed-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Tuo Li <islituo@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Prepare for removal of the request pointer by using scsi_cmd_to_rq()
instead. This patch does not change any functionality.
Link: https://lore.kernel.org/r/20210809230355.8186-51-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
These members are only used for ALUA sense detail propagation, which can
just as easily be done via sense_reason_t.
Link: https://lore.kernel.org/r/20210728115353.2396-4-ddiss@suse.de
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The se_cmd scsi_asc and scsi_ascq members are only used for tracking ALUA
SCSI sense detail between target_core_alua and translate_sense_reason(), so
they're effectively always zero here.
Link: https://lore.kernel.org/r/20210728115353.2396-3-ddiss@suse.de
Cc: Chris Boot <bootc@bootc.net>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
core_alua_state_lba_dependent() currently uses lun->lun_tg_pt_gp without
holding the lun_tg_pt_gp_lock. The lock is taken in the caller, so obtain
the needed tg_pt_gp_id there instead.
Link: https://lore.kernel.org/r/20210728115353.2396-2-ddiss@suse.de
Cc: Hannes Reinecke <hare@suse.de>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
When running command pipelining for WRITE direction commands (e.g. tape
device write), userspace sends cmd completion to cmd ring before processing
write data. In that case userspace has to copy data before sending
completion, because cmd completion also implicitly releases the data buffer
in data area.
The new feature KEEP_BUF allows userspace to optionally keep the buffer
after completion by setting new bit TCMU_UFLAG_KEEP_BUF in
tcmu_cmd_entry_hdr->uflags. In that case buffer has to be released
explicitly by writing the cmd_id to new action item free_kept_buf.
All kept buffers are released during reset_ring and if userspace closes uio
device (tcmu_release).
Link: https://lore.kernel.org/r/20210713175021.20103-1-bostroesser@gmail.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
CONFIG_BLK_SCSI_REQUEST is rather misnamed as it enables building a small
amount of code shared by the SCSI initiator, target, and consumers of the
scsi_request passthrough API. Rename it and also allow building it as a
module.
[mkp: add module license]
Link: https://lore.kernel.org/r/20210724072033.1284840-20-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The variable ret is being initialized with a value that is never read, the
assignment is redundant and can be removed.
Link: https://lore.kernel.org/r/20210721101519.42299-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Addresses-Coverity: ("Unused value")
The driver core ignores the return value of this callback because there
is only little it can do when a device disappears.
This is the final bit of a long lasting cleanup quest where several
buses were converted to also return void from their remove callback.
Additionally some resource leaks were fixed that were caused by drivers
returning an error code in the expectation that the driver won't go
away.
With struct bus_type::remove returning void it's prevented that newly
implemented buses return an ignored error code and so don't anticipate
wrong expectations for driver authors.
Reviewed-by: Tom Rix <trix@redhat.com> (For fpga)
Reviewed-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Reviewed-by: Cornelia Huck <cohuck@redhat.com> (For drivers/s390 and drivers/vfio)
Acked-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk> (For ARM, Amba and related parts)
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Chen-Yu Tsai <wens@csie.org> (for sunxi-rsb)
Acked-by: Pali Rohár <pali@kernel.org>
Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org> (for media)
Acked-by: Hans de Goede <hdegoede@redhat.com> (For drivers/platform)
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-By: Vinod Koul <vkoul@kernel.org>
Acked-by: Juergen Gross <jgross@suse.com> (For xen)
Acked-by: Lee Jones <lee.jones@linaro.org> (For mfd)
Acked-by: Johannes Thumshirn <jth@kernel.org> (For mcb)
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org> (For slimbus)
Acked-by: Kirti Wankhede <kwankhede@nvidia.com> (For vfio)
Acked-by: Maximilian Luz <luzmaximilian@gmail.com>
Acked-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> (For ulpi and typec)
Acked-by: Samuel Iglesias Gonsálvez <siglesias@igalia.com> (For ipack)
Acked-by: Geoff Levand <geoff@infradead.org> (For ps3)
Acked-by: Yehezkel Bernat <YehezkelShB@gmail.com> (For thunderbolt)
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com> (For intel_th)
Acked-by: Dominik Brodowski <linux@dominikbrodowski.net> (For pcmcia)
Acked-by: Rafael J. Wysocki <rafael@kernel.org> (For ACPI)
Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> (rpmsg and apr)
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> (For intel-ish-hid)
Acked-by: Dan Williams <dan.j.williams@intel.com> (For CXL, DAX, and NVDIMM)
Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com> (For isa)
Acked-by: Stefan Richter <stefanr@s5r6.in-berlin.de> (For firewire)
Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> (For hid)
Acked-by: Thorsten Scherer <t.scherer@eckelmann.de> (For siox)
Acked-by: Sven Van Asbroeck <TheSven73@gmail.com> (For anybuss)
Acked-by: Ulf Hansson <ulf.hansson@linaro.org> (For MMC)
Acked-by: Wolfram Sang <wsa@kernel.org> # for I2C
Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Finn Thain <fthain@linux-m68k.org>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20210713193522.1770306-6-u.kleine-koenig@pengutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
CPU affinity control added with commit 39ae3edda3 ("scsi: target: core:
Make completion affinity configurable") makes target_complete_cmd() queue
work on a CPU based on se_tpg->se_tpg_wwn->cmd_compl_affinity state.
LIO's EXTENDED COPY worker is a special case in that read/write cmds are
dispatched using the global xcopy_pt_tpg, which carries a NULL se_tpg_wwn
pointer following initialization in target_xcopy_setup_pt().
The NULL xcopy_pt_tpg->se_tpg_wwn pointer is dereferenced on completion of
any EXTENDED COPY initiated read/write cmds. E.g using the libiscsi
SCSI.ExtendedCopy.Simple test:
BUG: kernel NULL pointer dereference, address: 00000000000001a8
RIP: 0010:target_complete_cmd+0x9d/0x130 [target_core_mod]
Call Trace:
fd_execute_rw+0x148/0x42a [target_core_file]
? __dynamic_pr_debug+0xa7/0xe0
? target_check_reservation+0x5b/0x940 [target_core_mod]
__target_execute_cmd+0x1e/0x90 [target_core_mod]
transport_generic_new_cmd+0x17c/0x330 [target_core_mod]
target_xcopy_issue_pt_cmd+0x9/0x60 [target_core_mod]
target_xcopy_read_source.isra.7+0x10b/0x1b0 [target_core_mod]
? target_check_fua+0x40/0x40 [target_core_mod]
? transport_complete_task_attr+0x130/0x130 [target_core_mod]
target_xcopy_do_work+0x61f/0xc00 [target_core_mod]
This fix makes target_complete_cmd() queue work on se_cmd->cpuid if
se_tpg_wwn is NULL.
Link: https://lore.kernel.org/r/20210720225522.26291-1-ddiss@suse.de
Fixes: 39ae3edda3 ("scsi: target: core: Make completion affinity configurable")
Cc: Lee Duncan <lduncan@suse.com>
Cc: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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Merge tag 'block-5.14-2021-07-08' of git://git.kernel.dk/linux-block
Pull more block updates from Jens Axboe:
"A combination of changes that ended up depending on both the driver
and core branch (and/or the IDE removal), and a few late arriving
fixes. In detail:
- Fix io ticks wrap-around issue (Chunguang)
- nvme-tcp sock locking fix (Maurizio)
- s390-dasd fixes (Kees, Christoph)
- blk_execute_rq polling support (Keith)
- blk-cgroup RCU iteration fix (Yu)
- nbd backend ID addition (Prasanna)
- Partition deletion fix (Yufen)
- Use blk_mq_alloc_disk for mmc, mtip32xx, ubd (Christoph)
- Removal of now dead block request types due to IDE removal
(Christoph)
- Loop probing and control device cleanups (Christoph)
- Device uevent fix (Christoph)
- Misc cleanups/fixes (Tetsuo, Christoph)"
* tag 'block-5.14-2021-07-08' of git://git.kernel.dk/linux-block: (34 commits)
blk-cgroup: prevent rcu_sched detected stalls warnings while iterating blkgs
block: fix the problem of io_ticks becoming smaller
nvme-tcp: can't set sk_user_data without write_lock
loop: remove unused variable in loop_set_status()
block: remove the bdgrab in blk_drop_partitions
block: grab a device refcount in disk_uevent
s390/dasd: Avoid field over-reading memcpy()
dasd: unexport dasd_set_target_state
block: check disk exist before trying to add partition
ubd: remove dead code in ubd_setup_common
nvme: use return value from blk_execute_rq()
block: return errors from blk_execute_rq()
nvme: use blk_execute_rq() for passthrough commands
block: support polling through blk_execute_rq
block: remove REQ_OP_SCSI_{IN,OUT}
block: mark blk_mq_init_queue_data static
loop: rewrite loop_exit using idr_for_each_entry
loop: split loop_lookup
loop: don't allow deleting an unspecified loop device
loop: move loop_ctl_mutex locking into loop_add
...
This series consists of the usual driver updates (ufs, ibmvfc,
megaraid_sas, lpfc, elx, mpi3mr, qedi, iscsi, storvsc, mpt3sas) with
elx and mpi3mr being new drivers. The major core change is a rework
to drop the status byte handling macros and the old bit shifted
definitions and the rest of the updates are minor fixes.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This series consists of the usual driver updates (ufs, ibmvfc,
megaraid_sas, lpfc, elx, mpi3mr, qedi, iscsi, storvsc, mpt3sas) with
elx and mpi3mr being new drivers.
The major core change is a rework to drop the status byte handling
macros and the old bit shifted definitions and the rest of the updates
are minor fixes"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (287 commits)
scsi: aha1740: Avoid over-read of sense buffer
scsi: arcmsr: Avoid over-read of sense buffer
scsi: ips: Avoid over-read of sense buffer
scsi: ufs: ufs-mediatek: Add missing of_node_put() in ufs_mtk_probe()
scsi: elx: libefc: Fix IRQ restore in efc_domain_dispatch_frame()
scsi: elx: libefc: Fix less than zero comparison of a unsigned int
scsi: elx: efct: Fix pointer error checking in debugfs init
scsi: elx: efct: Fix is_originator return code type
scsi: elx: efct: Fix link error for _bad_cmpxchg
scsi: elx: efct: Eliminate unnecessary boolean check in efct_hw_command_cancel()
scsi: elx: efct: Do not use id uninitialized in efct_lio_setup_session()
scsi: elx: efct: Fix error handling in efct_hw_init()
scsi: elx: efct: Remove redundant initialization of variable lun
scsi: elx: efct: Fix spelling mistake "Unexected" -> "Unexpected"
scsi: lpfc: Fix build error in lpfc_scsi.c
scsi: target: iscsi: Remove redundant continue statement
scsi: qla4xxx: Remove redundant continue statement
scsi: ppa: Switch to use module_parport_driver()
scsi: imm: Switch to use module_parport_driver()
scsi: mpt3sas: Fix error return value in _scsih_expander_add()
...
With the legacy IDE driver gone drivers now use either REQ_OP_DRV_*
or REQ_OP_SCSI_*, so unify the two concepts of passthrough requests
into a single one.
Reviewed-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The continue statement at the end of a loop has no effect, remove it.
Link: https://lore.kernel.org/r/20210617114347.10247-1-colin.king@canonical.com
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Addresses-Coverity: ("Continue has no effect")
Make it possible for the compiler to verify whether SAM and host
status codes are used correctly.
[mkp: resolve conflicts with Hannes' SCSI result series]
Link: https://lore.kernel.org/r/20210524025457.11299-3-bvanassche@acm.org
Cc: Hannes Reinecke <hare@suse.com>
Reviewed-by: John Garry <john.garry@huawei.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
On realtime kernels, spin_lock_irq*(spinlock_t) do not disable the
interrupts, a call to irqs_disabled() will return false thus firing a
warning in __transport_wait_for_tasks().
Remove the warning and also replace assert_spin_locked() with
lockdep_assert_held()
Link: https://lore.kernel.org/r/20210531121326.3649-1-mlombard@redhat.com
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Maurizio Lombardi <mlombard@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
target_complete_cmd() and friends requires a SAM status type, so passing
GOOD here is actually wrong.
Link: https://lore.kernel.org/r/20210427083046.31620-40-hare@suse.de
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Replace the check for DRIVER_SENSE with a check for
scsi_status_is_check_condition().
Audit all callsites to ensure the SAM status is set correctly. For
backwards compability move the DRIVER_SENSE definition to sg.h, and update
sg, bsg, and scsi_ioctl to set the DRIVER_SENSE driver_status whenever
SAM_STAT_CHECK_CONDITION is present.
[mkp: fix zeroday srp warning]
Link: https://lore.kernel.org/r/20210427083046.31620-10-hare@suse.de
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
fix
drivers/target/target_core_user.c:1424:9-10: WARNING: return of 0/1 in function 'tcmu_handle_completions' with return type bool
Return statements in functions returning bool should use
true/false instead of 1/0.
Generated by: scripts/coccinelle/misc/boolreturn.cocci
Link: https://lore.kernel.org/r/20210515230358.GA97544@60d1edce16e0
Fixes: 9814b55cde ("scsi: target: tcmu: Return from tcmu_handle_completions() if cmd_id not found")
CC: Bodo Stroesser <bostroesser@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This has us use raw_smp_processor_id() in iblock's plug_device callout.
smp_processor_id() is not needed here, because we are running from a per
CPU work item that is also queued to run on a worker thread that is
normally bound to a specific CPU. If the worker thread did end up switching
CPUs then it's handled the same way we handle when the work got moved to a
different CPU's worker thread, where we will just end up sending I/O from
the new CPU.
Link: https://lore.kernel.org/r/20210519222640.5153-1-michael.christie@oracle.com
Fixes: 415ccd9811 ("scsi: target: iblock: Add backend plug/unplug callouts")
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Extend the standard INQUIRY data to 96 bytes and fill in the VERSION
DESCRIPTOR fields.
The layout follows SPC-4:
- SCSI architecture standard
- SCSI transport protocol standard
- SCSI primary command set standard
- SCSI device type command set standard
All version descriptor values are defined as "no version claimed" because
some initiators fail to recognize anything else.
[mkp: whitespace]
Link: https://lore.kernel.org/r/20210513192804.1252142-3-k.shelekhin@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Bump the SCSI primary command set standard to SPC-4. The upcoming version
descriptors will report newer SCSI standards (like SBC-3) that are not
defined in SPC-3.
Link: https://lore.kernel.org/r/20210513192804.1252142-2-k.shelekhin@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Implement an attribute which provides a way to set a company specific WWN
in configfs via:
target/core/$backstore/$name/wwn/company_id
The Open Fabrics Alliance ID 001405h remains the default.
Link: https://lore.kernel.org/r/20210420185920.42431-3-s.samoylenko@yadro.com
Signed-off-by: Sergey Samoylenko <s.samoylenko@yadro.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Both the INQUIRY handling and the XCOPY implementation provide functions to
generate an NAA designator. In addition, these functions are poorly named:
- spc_parse_naa_6h_vendor_specific()
- target_xcopy_gen_naa_ieee()
Introduce a common NAA 6 designator generation function,
spc_gen_naa_6h_vendor_specific().
Link: https://lore.kernel.org/r/20210420185920.42431-2-s.samoylenko@yadro.com
Signed-off-by: Sergey Samoylenko <s.samoylenko@yadro.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Variable pg_size is set to '0x100 << pg_size', but this value is never read
and it is not used later on. Hence it is a redundant assignment and can be
removed.
Clean up the following clang-analyzer warning:
drivers/target/sbp/sbp_target.c:1264:3: warning: Value stored to
'pg_size' is never read [clang-analyzer-deadcode.DeadStores].
Link: https://lore.kernel.org/r/1620902977-57076-1-git-send-email-jiapeng.chong@linux.alibaba.com
Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The bit definition TCM_DEV_BIT_PLUGGED should correctly be named
TCMU_DEV_BIT_PLUGGED, since all other bits in the same bitfield have prefix
TCMU_.
Link: https://lore.kernel.org/r/20210512140654.31249-1-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The structure pointer passed to container_of() is never NULL; that was
already checked. That means that the result of container_of() operations
on it is also never NULL, even though se_node_acl is the first element
of the structure embedding it. On top of that, it is misleading to perform
a NULL check on the result of container_of() because the position of the
contained element could change, which would make the test invalid.
Remove the unnecessary NULL check.
As it turns out, the container_of operation was only made for the purpose
of the NULL check. If the container_of is actually needed, it is repeated
later. Remove the container_of operation as well.
The NULL check was identified and removed with the following Coccinelle
script.
@@
type t;
identifier v;
statement s;
@@
<+...
(
t v = container_of(...);
|
v = container_of(...);
)
...
when != v
- if (\( !v \| v == NULL \) ) s
...+>
Link: https://lore.kernel.org/r/20210510040817.2050266-1-linux@roeck-us.net
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Hou Pu <houpu@bytedance.com>
Cc: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Instead of calling dma_unmap_sg() after completing WRITE I/O, call
dma_unmap_sg() before calling target_execute_cmd() to sync the DMA buffer.
Link: https://lore.kernel.org/r/1618403949-3443-1-git-send-email-varun@chelsio.com
Cc: <stable@vger.kernel.org> # 5.4+
Signed-off-by: Varun Prakash <varun@chelsio.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use kmemdup_nul() helper instead of open-coding to simplify the code.
Link: https://lore.kernel.org/r/20210402092517.2445595-1-yangyingliang@huawei.com
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This is a set of minor fixes in various drivers (qla2xxx, ufs,
scsi_debug, lpfc) one doc fix and a fairly large update to the fnic
driver to remove the open coded iteration functions in favour of the
scsi provided ones.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull more SCSI updates from James Bottomley:
"This is a set of minor fixes in various drivers (qla2xxx, ufs,
scsi_debug, lpfc) one doc fix and a fairly large update to the fnic
driver to remove the open coded iteration functions in favour of the
scsi provided ones"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: fnic: Use scsi_host_busy_iter() to traverse commands
scsi: fnic: Kill 'exclude_id' argument to fnic_cleanup_io()
scsi: scsi_debug: Fix cmd_per_lun, set to max_queue
scsi: ufs: core: Narrow down fast path in system suspend path
scsi: ufs: core: Cancel rpm_dev_flush_recheck_work during system suspend
scsi: ufs: core: Do not put UFS power into LPM if link is broken
scsi: qla2xxx: Prevent PRLI in target mode
scsi: qla2xxx: Add marginal path handling support
scsi: target: tcmu: Return from tcmu_handle_completions() if cmd_id not found
scsi: ufs: core: Fix a typo in ufs-sysfs.c
scsi: lpfc: Fix bad memory access during VPD DUMP mailbox command
scsi: lpfc: Fix DMA virtual address ptr assignment in bsg
scsi: lpfc: Fix illegal memory access on Abort IOCBs
scsi: blk-mq: Fix build warning when making htmldocs
If tcmu_handle_completions() finds an invalid cmd_id while looping over cmd
responses from userspace it sets TCMU_DEV_BIT_BROKEN and breaks the
loop. This means that it does further handling for the tcmu device.
Skip that handling by replacing 'break' with 'return'.
Additionally change tcmu_handle_completions() from unsigned int to bool,
since the value used in return already is bool.
Link: https://lore.kernel.org/r/20210423150123.24468-1-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This series consists of the usual driver updates (ufs, target, tcmu,
smartpqi, lpfc, zfcp, qla2xxx, mpt3sas, pm80xx). The major core
change is using a sbitmap instead of an atomic for queue tracking.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This consists of the usual driver updates (ufs, target, tcmu,
smartpqi, lpfc, zfcp, qla2xxx, mpt3sas, pm80xx).
The major core change is using a sbitmap instead of an atomic for
queue tracking"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (412 commits)
scsi: target: tcm_fc: Fix a kernel-doc header
scsi: target: Shorten ALUA error messages
scsi: target: Fix two format specifiers
scsi: target: Compare explicitly with SAM_STAT_GOOD
scsi: sd: Introduce a new local variable in sd_check_events()
scsi: dc395x: Open-code status_byte(u8) calls
scsi: 53c700: Open-code status_byte(u8) calls
scsi: smartpqi: Remove unused functions
scsi: qla4xxx: Remove an unused function
scsi: myrs: Remove unused functions
scsi: myrb: Remove unused functions
scsi: mpt3sas: Fix two kernel-doc headers
scsi: fcoe: Suppress a compiler warning
scsi: libfc: Fix a format specifier
scsi: aacraid: Remove an unused function
scsi: core: Introduce enum scsi_disposition
scsi: core: Modify the scsi_send_eh_cmnd() return value for the SDEV_BLOCK case
scsi: core: Rename scsi_softirq_done() into scsi_complete()
scsi: core: Remove an incorrect comment
scsi: core: Make the scsi_alloc_sgtables() documentation more accurate
...
Fix the function name in the kernel-doc header above ft_prli().
Link: https://lore.kernel.org/r/20210415220826.29438-21-bvanassche@acm.org
Cc: Hannes Reinecke <hare@suse.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Do not print tg_pt_gp->tg_pt_gp_valid_id if we already know that it is zero.
Link: https://lore.kernel.org/r/20210415220826.29438-20-bvanassche@acm.org
Cc: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Use format specifier '%u' to format the u32 data type instead of '%hu'.
Link: https://lore.kernel.org/r/20210415220826.29438-19-bvanassche@acm.org
Cc: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Instead of leaving it implicit that SAM_STAT_GOOD == 0, compare explicitly
with SAM_STAT_GOOD.
Link: https://lore.kernel.org/r/20210415220826.29438-18-bvanassche@acm.org
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Make data_pages_per_blk changeable similar to the way it is done for
max_data_area_mb. One can change the value by typing:
echo "data_pages_per_blk=N" >control
The value is printed when doing:
cat info
In addition, a new readonly attribute 'data_pages_per_blk' returns the
value on read.
Link: https://lore.kernel.org/r/20210324195758.2021-7-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Replace DATA_PAGES_PER_BLK and DATA_BLOCK_SIZE with new struct elements
tcmu_dev->data_pages_per_blk and tcmu_dev->data_blk_size. These new
variables are still loaded with constant definition DATA_PAGES_PER_BLK_DEF
(= 1) and DATA_PAGES_PER_BLK_DEF * PAGE_SIZE.
There is no way yet to set the values via configfs.
Link: https://lore.kernel.org/r/20210324195758.2021-6-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
There is only one caller of tcmu_get_block_page left. Since it is a
one-liner, we can remove the function.
Link: https://lore.kernel.org/r/20210324195758.2021-5-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Change tcmu to support DATA_BLOCK_SIZE being a multiple of PAGE_SIZE. There
are two reasons why one would like to have a bigger DATA_BLOCK_SIZE:
1) If userspace - e.g. due to data compression, encryption or
deduplication - needs to have receive or transmit data in a consecutive
buffer, we can define DATA_BLOCK_SIZE to the maximum size of a SCSI
READ/WRITE to enforce that userspace sees just one consecutive
buffer. That way we can avoid the need for doing data copy in
userspace.
2) Using a bigger data block size can speed up command processing in
tcmu. The number of free data blocks to look up in bitmap is reduced
substantially. The lookup for data pages in radix_tree can be done more
efficiently if there are multiple pages in a data block. The maximum
number of IOVs to set up is lower so cmd entries in the ring become
smaller.
Link: https://lore.kernel.org/r/20210324195758.2021-4-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Rename some variables and definitions as a first preparation for
DATA_BLOCK_SIZE != PAGE_SIZE and add the new DATA_PAGES_PER_BLK definition
containing the number of pages per data block.
Rename tcmu_try_get_block_page() to tcmu_try_get_data_page(). Keep name
tcmu_get_block_page() since it will go away in a following commit when
there is only one caller left. Subsequent commits will then add full
support for DATA_PAGES_PER_BLK != 1, which also means DATA_BLOCK_SIZE =
DATA_PAGES_PER_BLK * PAGE_SIZE
Link: https://lore.kernel.org/r/20210324195758.2021-3-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Some definitions and members of struct tcmu_dev had misleading
names. Examples:
- ring_size was used for the size of mailbox + cmd ring + data area
- CMDR_SIZE was used for size of mailbox + cmd ring
I added the new definition MB_CMDR_SIZE (mailbox + command ring), changed
CMDR_SIZE to hold the size of the command ring only and replaced in struct
tcmu_dev the member ring_size with mmap_pages, because the member is now
used in tcmu_mmap() only, where we need page count, not size.
I also added the new struct tcmu_dev member 'cmdr' which is used to replace
some occurences of '(void *)mb + CMDR_OFF' with 'udev->cmdr' for better
readability.
Link: https://lore.kernel.org/r/20210324195758.2021-2-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Resolve a couple of conflicts between the 5.12 fixes branch and the
5.13 staging tree (iSCSI target and UFS).
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Instead of overloading the passthrough fast path with the deprecated
block layer bounce buffering let the users that combine an old
undermaintained driver with a highmem system pay the price by always
falling back to copies in that case.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20210331073001.46776-9-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Create the device for the virtual LUN 0 using the DUMMY flag. This change
makes it possible to remove some special-casing in the INQUIRY code.
Link: https://lore.kernel.org/r/20210322200938.53300-3-k.shelekhin@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit adds the DUMMY flag to the rd_mcp backend that forces a logical
unit to report itself as not connected device of an unknown type.
Essentially this allows users to create devices identical to the device for
the virtual LUN 0, making it possible to explicitly create a LUN 0 device
and configure its WWNs (e.g. vendor or product name).
Link: https://lore.kernel.org/r/20210322200938.53300-2-k.shelekhin@yadro.com
Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com>
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
target_sequencer_start event is triggered inside target_cmd_init_cdb().
se_cmd.tag is not initialized with ITT at the moment so the event always
prints zero tag.
Link: https://lore.kernel.org/r/20210403215415.95077-1-r.bolshakov@yadro.com
Cc: stable@vger.kernel.org # 5.10+
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Roman Bolshakov <r.bolshakov@yadro.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Pull 5.12/scsi-fixes into the 5.13 SCSI tree to provide a baseline for
some UFS changes that would otherwise cause conflicts during the
merge.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
If pscsi_map_sg() fails, make sure to drop references to already allocated
bios.
Link: https://lore.kernel.org/r/20210323212431.15306-2-mwilck@suse.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
pscsi_map_sg() uses the variable nr_pages as a hint for bio_kmalloc() how
many vector elements to allocate. If nr_pages is < BIO_MAX_PAGES, it will
be reset to 0 after successful allocation of the bio.
If bio_add_pc_page() fails later for whatever reason, pscsi_map_sg() tries
to allocate another bio, passing nr_vecs = 0. This causes bio_add_pc_page()
to fail immediately in the next call. pci_map_sg() continues to allocate
zero-length bios until memory is exhausted and the kernel crashes with
OOM. This can be easily observed by exporting a SATA DVD drive via pscsi.
The target crashes as soon as the client tries to access the DVD LUN. In
the case I analyzed, bio_add_pc_page() would fail because the DVD device's
max_sectors_kb (128) was exceeded.
Avoid this by simply not resetting nr_pages to 0 after allocating the
bio. This way, the client receives an I/O error when it tries to send
requests exceeding the devices max_sectors_kb, and eventually gets it
right. The client must still limit max_sectors_kb e.g. by an udev rule if
(like in my case) the driver doesn't report valid block limits, otherwise
it encounters I/O errors.
Link: https://lore.kernel.org/r/20210323212431.15306-1-mwilck@suse.com
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Lee Duncan <lduncan@suse.com>
Signed-off-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Fix warning:
drivers/target/target_core_transport.c:1661: WARNING: Block quote ends
without a blank line; unexpected unindent.
Link: https://lore.kernel.org/r/20210318225858.11863-1-michael.christie@oracle.com
Signed-off-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
In commit f7c89771d0 ("scsi: target: tcmu: Replace radix_tree with
XArray") the meaning of last parameter of tcmu_blocks_release() was
changed. So in the callers we should subtract 1 from the previous
parameter.
Unfortunately that change got lost at one of the two places where
tcmu_blocks_release() is called. That does not lead to any problems, but we
should adjust it anyway.
Link: https://lore.kernel.org/r/20210310184458.10741-1-bostroesser@gmail.com
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The function fd_do_prot_fill() is called from two callers
fd_do_prot_unmap() and fd_format_prot(). Both callers initialize the passed
buffer to 0xff with memset().
Move the memset() call to fd_do_prot_fill() to avoid duplication.
Link: https://lore.kernel.org/r/20210228055645.22253-24-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove unused macro to fix the following compilation warning:
drivers/target//iscsi/iscsi_target_util.c:31: warning: macro "PRINT_BUFF" is not used [-Wunused-macros]
#define PRINT_BUFF(buff, len) \
Link: https://lore.kernel.org/r/20210228055645.22253-12-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove unused macro to fix the following compilation warning:
drivers/target//iscsi/iscsi_target_nego.c:31: warning: macro "TEXT_LEN" is not used [-Wunused-macros]
#define TEXT_LEN 4096
Link: https://lore.kernel.org/r/20210228055645.22253-11-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove unused macro to fix the following compilation warning:
drivers/target//iscsi/iscsi_target_stat.c:31: warning: macro "ISCSI_INST_LAST_FAILURE_TYPE" is not used [-Wunused-macros]
#define ISCSI_INST_LAST_FAILURE_TYPE 0
Link: https://lore.kernel.org/r/20210228055645.22253-10-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove the unuseds macro to fix the following compilation warnings:
drivers/target//target_core_stat.c:34: warning: macro "NONE" is not used [-Wunused-macros]
#define NONE "None"
drivers/target//iscsi/iscsi_target_stat.c:36: warning: macro "ISPRINT" is not used [-Wunused-macros]
#define ISPRINT(a) ((a >= ' ') && (a <= '~'))
Link: https://lore.kernel.org/r/20210228055645.22253-8-chaitanya.kulkarni@wdc.com
Link: https://lore.kernel.org/r/20210228055645.22253-9-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Rename function local variable i to sg_cnt so we can get rid of the
shadow variable compilation warning:
unsigned int i;
^
int i;
^
Link: https://lore.kernel.org/r/20210228055645.22253-6-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Remove unused macro to fix the following compilation warning:
drivers/target//target_core_pscsi.c:37: warning: macro "ISPRINT" is not used [-Wunused-macros]
#define ISPRINT(a) ((a >= ' ') && (a <= '~'))
Link: https://lore.kernel.org/r/20210228055645.22253-7-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This fixes a compilation warning in pscsi_complete_cmd():
drivers/target/target_core_pscsi.c: In function ‘pscsi_complete_cmd’:
drivers/target/target_core_pscsi.c:624:5: warning: suggest braces around empty body in an ‘if’ statement [-Wempty-body]
; /* XXX: TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE */
Link: https://lore.kernel.org/r/20210228055645.22253-5-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
According to ilog2() it expects 32/64 bit unsigned value.
" 147 * ilog2 - log base 2 of 32-bit or a 64-bit unsigned value"
Replace type of logs_per_phys from int to unsigned int.
Link: https://lore.kernel.org/r/20210228055645.22253-4-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Trim the line that is longer than 80 characters, which is inconsistent with
the rest of the code.
Link: https://lore.kernel.org/r/20210228055645.22253-3-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
The two arguments to the functions op and opf which are REQ_OP_XXX and
REQ_XXX flags belong to the two different namespaces, i.e. they can be
combined safely given that REQ_OP_XXX takes 8 bits of the flags and rest is
available to REQ_XXX flags.
Replace op and op_flag arguments with opf.
Link: https://lore.kernel.org/r/20210228055645.22253-2-chaitanya.kulkarni@wdc.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Especially when using tcmu with tcm_loop, memory allocations with
GFP_KERNEL for a LUN can cause write back to the same LUN.
So we have to use GFP_NOIO when allocation is done while handling commands
or while holding cmdr_lock.
Link: https://lore.kernel.org/r/20210305190009.32242-1-bostroesser@gmail.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
An attempt from Matthew Wilcox to replace radix-tree usage by XArray in
tcmu more than 1 year ago unfortunately got lost.
I rebased that work on latest tcmu and tested it.
Link: https://lore.kernel.org/r/20210224185335.13844-3-bostroesser@gmail.com
Reviewed-by: Mike Christie <michael.christie@oracle.com>
Signed-off-by: Bodo Stroesser <bostroesser@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
