#
4ad94653 |
|
04-Feb-2024 |
Ricardo B. Marliere <ricardo@marliere.net> |
scsi: target: tcm_loop: Make tcm_loop_lld_bus const Now that the driver core can properly handle constant struct bus_type, move the tcm_loop_lld_bus variable to be a constant structure as well, placing it into read-only memory which can not be modified at runtime. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Suggested-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Ricardo B. Marliere <ricardo@marliere.net> Link: https://lore.kernel.org/r/20240204-bus_cleanup-target-v1-1-96106936c4ab@marliere.net Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
e2f4ea40 |
|
27-Sep-2023 |
Mike Christie <michael.christie@oracle.com> |
scsi: target: Allow userspace to request direct submissions This allows userspace to request the fabric drivers do direct submissions if they support it. With the new device file, submit_type, users can write 0 - 2 to control how commands are submitted to the backend: 0 - TARGET_FABRIC_DEFAULT_SUBMIT - LIO will use the fabric's default submission type. This is the default for compat. 1 - TARGET_DIRECT_SUBMIT - LIO will submit the cmd to the backend from the calling context if the fabric the cmd was received on supports it, else it will use the fabric's default type. 2 - TARGET_QUEUE_SUBMIT - LIO will queue the cmd to the LIO submission workqueue which will pass it to the backend. When using an NVMe drive and vhost-scsi with direct submission we see around a 20% improvement in 4K I/Os: fio jobs 1 2 4 8 10 -------------------------------------------------- defer 94K 190K 394K 770K 890K direct 128K 252K 488K 950K - And when using the queueing mode, we now no longer see issues like where the iSCSI tx thread is blocked in the block layer waiting on a tag so it can't respond to a nop or perform I/Os for other LUs. Signed-off-by: Mike Christie <michael.christie@oracle.com> Link: https://lore.kernel.org/r/20230928020907.5730-6-michael.christie@oracle.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
|
#
194605d4 |
|
27-Sep-2023 |
Mike Christie <michael.christie@oracle.com> |
scsi: target: Have drivers report if they support direct submissions In some cases, like with multiple LUN targets or where the target has to respond to transport level requests from the receiving context it can be better to defer cmd submission to a helper thread. If the backend driver blocks on something like request/tag allocation it can block the entire target submission path and other LUs and transport IO on that session. In other cases like single LUN targets with storage that can support all the commands that the target can queue, then it's best to submit the cmd to the backend from the target's cmd receiving context. Subsequent commits will allow the user to config what they prefer, but drivers like loop can't directly submit because they can be called from a context that can't sleep. And, drivers like vhost-scsi can support direct submission, but need to keep their default behavior of deferring execution to avoid possible regressions where the backend can block. Make the drivers tell LIO core if they support direct submissions and their current default, so we can prevent users from misconfiguring the system and initialize devices correctly. Signed-off-by: Mike Christie <michael.christie@oracle.com> Link: https://lore.kernel.org/r/20230928020907.5730-2-michael.christie@oracle.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
|
#
882f4ada |
|
18-Mar-2023 |
Lizhe <sensor1010@163.com> |
scsi: target: tcm_loop: Remove redundant driver match function If there is no driver match function, the driver core assumes that each candidate pair (driver, device) matches. See driver_match_device(). pseudo_lld_bus_match() always returns 1 and is therefore equivalent to not registering a match function. Remove it. Signed-off-by: Lizhe <sensor1010@163.com> Link: https://lore.kernel.org/r/20230319043518.297490-1-sensor1010@163.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
8e2ab8cd |
|
22-Mar-2023 |
Bart Van Assche <bvanassche@acm.org> |
scsi: target: tcm-loop: Declare SCSI host template const Make it explicit that the SCSI host template is not modified. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20230322195515.1267197-79-bvanassche@acm.org Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
2af6800f |
|
13-Mar-2023 |
Dmitry Bogdanov <d.bogdanov@yadro.com> |
scsi: target: loop: Remove default fabric ops callouts Remove callouts that are identical to the default implementations in TCM Core. Signed-off-by: Dmitry Bogdanov <d.bogdanov@yadro.com> Link: https://lore.kernel.org/r/20230313181110.20566-5-d.bogdanov@yadro.com Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
bc68e428 |
|
14-Nov-2022 |
Yang Yingliang <yangyingliang@huawei.com> |
scsi: target: tcm_loop: Fix possible name leak in tcm_loop_setup_hba_bus() If device_register() fails in tcm_loop_setup_hba_bus(), the name allocated by dev_set_name() need be freed. As comment of device_register() says, it should use put_device() to give up the reference in the error path. So fix this by calling put_device(), then the name can be freed in kobject_cleanup(). The 'tl_hba' will be freed in tcm_loop_release_adapter(), so it don't need goto error label in this case. Fixes: 3703b2c5d041 ("[SCSI] tcm_loop: Add multi-fabric Linux/SCSI LLD fabric module") Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20221115015042.3652261-1-yangyingliang@huawei.com Reviewed-by: Mike Christie <michael.chritie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
b9d82b7d |
|
07-Oct-2021 |
Bart Van Assche <bvanassche@acm.org> |
scsi: target: tcm_loop: Call scsi_done() directly 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>
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#
cb22f89e |
|
09-Aug-2021 |
Bart Van Assche <bvanassche@acm.org> |
scsi: tcm_loop: Use scsi_cmd_to_rq() instead of scsi_cmnd.request 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>
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#
8f13142a |
|
21-Jul-2021 |
Colin Ian King <colin.king@canonical.com> |
scsi: target: Remove redundant assignment to variable ret 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")
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#
fc7a6209 |
|
13-Jul-2021 |
Uwe Kleine-König <u.kleine-koenig@pengutronix.de> |
bus: Make remove callback return void 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>
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#
464a00c9 |
|
27-Apr-2021 |
Hannes Reinecke <hare@suse.de> |
scsi: core: Kill DRIVER_SENSE 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
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#
1130b499 |
|
27-Feb-2021 |
Mike Christie <michael.christie@oracle.com> |
scsi: target: tcm_loop: Use LIO wq cmd submission helper Convert loop to use the LIO wq cmd submission helper. Link: https://lore.kernel.org/r/20210227170006.5077-20-michael.christie@oracle.com Tested-by: Laurence Oberman <loberman@redhat.com> Reviewed-by: Bodo Stroesser <bostroesser@gmail.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
e0eb5d38 |
|
27-Feb-2021 |
Mike Christie <michael.christie@oracle.com> |
scsi: target: tcm_loop: Use block cmd allocator for se_cmds Make tcm_loop use the block layer cmd allocator for se_cmds instead of using the tcm_loop_cmd_cache. In the future when we can use the host tags for internal requests like TMFs we can completely kill the tcm_loop_cmd_cache. Link: https://lore.kernel.org/r/20210227170006.5077-19-michael.christie@oracle.com Tested-by: Laurence Oberman <loberman@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
08694199 |
|
27-Feb-2021 |
Mike Christie <michael.christie@oracle.com> |
scsi: target: core: Add gfp_t arg to target_cmd_init_cdb() tcm_loop could be used like a normal block device, so we can't use GFP_KERNEL and should use GFP_NOIO. This adds a gfp_t arg to target_cmd_init_cdb() and converts the users. For every driver but loop GFP_KERNEL is kept. This will also be useful in subsequent patches where loop needs to do target_submit_prep() from interrupt context to get a ref to the se_device, and so it will need to use GFP_ATOMIC. Link: https://lore.kernel.org/r/20210227170006.5077-16-michael.christie@oracle.com Tested-by: Laurence Oberman <loberman@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
17ae18a6 |
|
27-Feb-2021 |
Mike Christie <michael.christie@oracle.com> |
scsi: target: tcm_loop: Convert to new submission API target_submit_cmd_map_sgls() is being removed, so convert loop to the new submission API. Even though loop does its own shutdown sync, this has loop use target_init_cmd()/target_submit_prep()/target_submit() since it needed to map sgls and in the next patches it will use the API to use LIO's workqueue. Link: https://lore.kernel.org/r/20210227170006.5077-9-michael.christie@oracle.com Tested-by: Laurence Oberman <loberman@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
94a0dfcf |
|
01-Nov-2020 |
Mike Christie <michael.christie@oracle.com> |
scsi: tcm_loop: Allow queues, can_queue and cmd_per_lun to be settable Make can_queue, nr_hw_queues and cmd_per_lun settable by the user instead of hard coding them. Link: https://lore.kernel.org/r/1604257174-4524-9-git-send-email-michael.christie@oracle.com Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
c68a5673 |
|
28-Apr-2020 |
Bodo Stroesser <bstroesser@ts.fujitsu.com> |
scsi: target: loopback: Fix READ with data and sensebytes We use tcm_loop with tape emulations running on tcmu. In case application reads a short tape block with a longer READ, or a long tape block with a short READ, according to SCC spec data has to be tranferred _and_ sensebytes with ILI set and information field containing the residual count. Similar problem also exists when using fixed block size in READ. Up to now tcm_loop is not prepared to handle sensebytes if input data is provided, as in tcm_loop_queue_data_in() it only sets SAM_STAT_GOOD and, if necessary, the residual count. To fix the bug, the same handling for sensebytes as present in tcm_loop_queue_status() must be done in tcm_loop_queue_data_in() also. After adding this handling, the two function now are nearly identical, so I created a single function with two wrappers. Link: https://lore.kernel.org/r/20200428182617.32726-1-bstroesser@ts.fujitsu.com Signed-off-by: Bodo Stroesser <bstroesser@ts.fujitsu.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
ae3d56d8 |
|
29-Jan-2019 |
Christoph Hellwig <hch@lst.de> |
scsi: remove bidirectional command support No real need for bidi support once the OSD code is gone. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Jens Axboe <axboe@kernel.dk> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
|
#
f80d2f08 |
|
25-Jan-2019 |
Bart Van Assche <bvanassche@acm.org> |
scsi: target/core: Remove the write_pending_status() callback function Due to the patch that makes TMF handling synchronous the write_pending_status() callback function is no longer called. Hence remove it. Acked-by: Felipe Balbi <balbi@ti.com> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Reviewed-by: Andy Grover <agrover@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Himanshu Madhani <himanshu.madhani@qlogic.com> Cc: Quinn Tran <quinn.tran@qlogic.com> Cc: Saurav Kashyap <saurav.kashyap@qlogic.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Juergen Gross <jgross@suse.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
4af14d11 |
|
13-Dec-2018 |
Christoph Hellwig <hch@lst.de> |
scsi: remove the use_clustering flag The same effects can be achieved by setting the dma_boundary to PAGE_SIZE - 1 and the max_segment_size to PAGE_SIZE, so shift those settings into the drivers. Note that in many cases the setting might be bogus, but this keeps the status quo. [mkp: fix myrs and myrb] Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
59a206b4 |
|
23-Nov-2018 |
David Disseldorp <ddiss@suse.de> |
scsi: target: replace fabric_ops.name with fabric_alias iscsi_target_mod is the only LIO fabric where fabric_ops.name differs from the fabric_ops.fabric_name string. fabric_ops.name is used when matching target/$fabric ConfigFS create paths, so rename it .fabric_alias and fallback to target/$fabric vs .fabric_name comparison if .fabric_alias isn't initialised. iscsi_target_mod is the only fabric module to set .fabric_alias . All other fabric modules rely on .fabric_name matching and can drop the duplicate string. Signed-off-by: David Disseldorp <ddiss@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
30c7ca93 |
|
23-Nov-2018 |
David Disseldorp <ddiss@suse.de> |
scsi: target: drop unnecessary get_fabric_name() accessor from fabric_ops All fabrics return a const string. In all cases *except* iSCSI the get_fabric_name() string matches fabric_ops.name. Both fabric_ops.get_fabric_name() and fabric_ops.name are user-facing, with the former being used for PR/ALUA state and the latter for ConfigFS (config/target/$name), so we unfortunately need to keep both strings around for now. Replace the useless .get_fabric_name() accessor function with a const string fabric_name member variable. Signed-off-by: David Disseldorp <ddiss@suse.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
25b88550 |
|
01-Aug-2018 |
Mike Christie <mchristi@redhat.com> |
scsi: target: loop, usb, vhost, xen: use target_remove_session This converts drivers that were only calling transport_deregister_session to use target_remove_session. The calling of transport_deregister_session_configfs via target_remove_session for these types of drivers is ok, because they were not exporting info from fields like sess_acl_list, sess->se_tpg and sess->fabric_sess_ptr from configfs accessible functions, so they will see no difference. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Felipe Balbi <balbi@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Juergen Gross <jgross@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
fa834287 |
|
01-Aug-2018 |
Mike Christie <mchristi@redhat.com> |
scsi: target: rename target_alloc_session Rename target_alloc_session to target_setup_session to avoid confusion with the other transport session allocation function that only allocates the session and because the target_alloc_session does so much more. It allocates the session, sets up the nacl and registers the session. The next patch will then add a remove function to match the setup in this one, so it should make sense for all drivers, except iscsi, to just call those 2 functions to setup and remove a session. iscsi will continue to be the odd driver. Signed-off-by: Mike Christie <mchristi@redhat.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Cc: Chris Boot <bootc@bootc.net> Cc: Bryant G. Ly <bryantly@linux.vnet.ibm.com> Cc: Michael Cyr <mikecyr@linux.vnet.ibm.com> Cc: <qla2xxx-upstream@qlogic.com> Cc: Johannes Thumshirn <jth@kernel.org> Cc: Felipe Balbi <balbi@kernel.org> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Juergen Gross <jgross@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
799d44d0 |
|
22-Jun-2018 |
Bart Van Assche <bvanassche@acm.org> |
scsi: target/tcm_loop: Avoid that static checkers warn about dead code The code under the "release:" label can only be reached after se_cmd has been set to a non-NULL value. Hence remove the if (se_cmd) test. Keep the else-part since calling transport_generic_free_cmd() is not necessary for a command that has not been submitted to the core. Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Fixes: 4d3895d5ea43 ("target/tcm_loop: Merge struct tcm_loop_cmd and struct tcm_loop_tmr") Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Mike Christie <mchristi@redhat.com> Cc: Dan Carpenter <dan.carpenter@oracle.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
|
#
aa090eab |
|
22-Jun-2018 |
Bart Van Assche <bvanassche@acm.org> |
scsi: target: Remove second argument from fabric_make_tpg() Since most target drivers do not use the second fabric_make_tpg() argument ("group") and since it is trivial to derive the group pointer from the wwn pointer, do not pass the group pointer to fabric_make_tpg(). Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Reviewed-by: Mike Christie <mchristi@redhat.com> Cc: Felipe Balbi <felipe.balbi@linux.intel.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
bf3a2b31 |
|
07-Mar-2018 |
Bart Van Assche <bvanassche@acm.org> |
target/tcm_loop: Use blk_queue_flag_set() Use blk_queue_flag_set() instead of open-coding this function. Cc: Nicholas A. Bellinger <nab@linux-iscsi.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Ming Lei <ming.lei@redhat.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
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#
09f99a3d |
|
11-Dec-2017 |
Markus Elfring <elfring@users.sourceforge.net> |
target: tcm_loop: Use seq_puts() in tcm_loop_show_info() The script "checkpatch.pl" pointed information out like the following. WARNING: Prefer seq_puts to seq_printf Thus fix the affected source code place. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
2dfe3511 |
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11-Dec-2017 |
Markus Elfring <elfring@users.sourceforge.net> |
target: tcm_loop: Delete an unnecessary return statement in tcm_loop_submission_work() The script "checkpatch.pl" pointed information out like the following. WARNING: void function return statements are not generally useful Thus remove such a statement in the affected function. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
7deeceb4 |
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11-Dec-2017 |
Markus Elfring <elfring@users.sourceforge.net> |
target: tcm_loop: Delete two unnecessary variable initialisations in tcm_loop_issue_tmr() The variables "se_cmd" and "tl_cmd" will eventually be set to appropriate pointers a bit later. Thus omit the explicit initialisation at the beginning. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
c8d1f4b7 |
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11-Dec-2017 |
Markus Elfring <elfring@users.sourceforge.net> |
target: tcm_loop: Combine substrings for 26 messages The script "checkpatch.pl" pointed information out like the following. WARNING: quoted string split across lines Thus fix the affected source code places. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
a572dba9 |
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10-Dec-2017 |
Markus Elfring <elfring@users.sourceforge.net> |
target: tcm_loop: Improve a size determination in two functions Replace the specification of data structures by pointer dereferences as the parameter for the operator "sizeof" to make the corresponding size determination a bit safer according to the Linux coding style convention. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
cd3fb32a |
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10-Dec-2017 |
Markus Elfring <elfring@users.sourceforge.net> |
target: tcm_loop: Delete an error message for a failed memory allocation in four functions Omit an extra message for a memory allocation failure in these functions. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring <elfring@users.sourceforge.net> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
4c1f0e65 |
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23-May-2017 |
Bart Van Assche <bvanassche@acm.org> |
target/tcm_loop: Make TMF processing slightly faster Target drivers must guarantee that struct se_cmd and struct se_tmr_req exist as long as target_tmr_work() is in progress. This is why the tcm_loop driver today passes 1 as second argument to transport_generic_free_cmd() from inside the TMF code. Instead of making the TMF code wait, make the TMF code obtain two references (SCF_ACK_KREF) and drop one reference from inside the .check_stop_free() callback. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.com> Cc: David Disseldorp <ddiss@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
75f141aa |
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23-May-2017 |
Bart Van Assche <bvanassche@acm.org> |
target/tcm_loop: Use target_submit_tmr() instead of open-coding this function Use target_submit_tmr() instead of open-coding this function. The only functional change is that TMFs are now added to sess_cmd_list, something the current code does not do. This behavior change is a bug fix because it makes LUN RESETs wait for other TMFs that are in progress for the same LUN. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.com> Cc: David Disseldorp <ddiss@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
d17203c4 |
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23-May-2017 |
Bart Van Assche <bvanassche@acm.org> |
target/tcm_loop: Replace a waitqueue and a counter by a completion This patch simplifies the implementation of the tcm_loop driver but does not change its behavior. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.com> Cc: David Disseldorp <ddiss@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
4d3895d5 |
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23-May-2017 |
Bart Van Assche <bvanassche@acm.org> |
target/tcm_loop: Merge struct tcm_loop_cmd and struct tcm_loop_tmr This patch simplifies the tcm_loop implementation but does not change any functionality. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.com> Cc: David Disseldorp <ddiss@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
36ec2ddc |
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02-May-2016 |
Christoph Hellwig <hch@lst.de> |
target: make close_session optional Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
22d11759 |
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02-May-2016 |
Christoph Hellwig <hch@lst.de> |
target: make ->shutdown_session optional Turns out the template and thus many drivers got the return value wrong: 0 means the fabrics driver needs to put a session reference, which no driver except for the iSCSI target drivers did. Fortunately none of these drivers supports explicit Node ACLs, so the bug was harmless. Even without that only qla2xxx and iscsi every did real work in shutdown_session, so get rid of the boilerplate code in all other drivers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
fb444abe |
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09-Jan-2016 |
Christoph Hellwig <hch@lst.de> |
target: Convert demo-mode only drivers to target_alloc_session This patch converts existing loopback, usb-gadget, and xen-scsiback demo-mode only fabric drivers to use the new target_alloc_session API caller. This includes adding a new alloc_session callback for fabric driver internal nexus pointer assignments. (Fixes for early for-next nexus breakage - Dan Carpenter) Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Acked-by: Juergen Gross <jgross@suse.com> Tested-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com> Tested-by: Chris Boot <bootc@bootc.net> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
2628b352 |
|
14-Nov-2015 |
Sheng Yang <sheng@yasker.org> |
tcm_loop: Show address of tpg in configfs In the past, the scsi_host's number wasn't shown anywhere, user have to depends on vpg_83 to find the block device, which is also depends on backstore implementation. It's better for tcm_loop to provide necessary straightforward information on locate the block device it created. This patch would help to locate the block device created by tcm_loop. The address would be shown at e.g. /sys/kernel/config/target/loopback/naa.60014059436855c1/tpgt_1/address which would looks like "2:0:1", and the lun number can be found at "/tpgt_1/lun/lun_0". Altogether they formated the scsi address of device as "2:0:1:0", which can be used to locate the device easily through 'lsscsi'. (Update to >= v4.4-rc1 configfs attribute usage - nab) Signed-off-by: Sheng Yang <sheng@yasker.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
64d513ac |
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08-Oct-2015 |
Christoph Hellwig <hch@lst.de> |
scsi: use host wide tags by default This patch changes the !blk-mq path to the same defaults as the blk-mq I/O path by always enabling block tagging, and always using host wide tags. We've had blk-mq available for a few releases so bugs with this mode should have been ironed out, and this ensures we get better coverage of over tagging setup over different configs. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Jens Axboe <axboe@kernel.dk> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: James Bottomley <JBottomley@Odin.com>
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#
2eafd729 |
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03-Oct-2015 |
Christoph Hellwig <hch@lst.de> |
target: use per-attribute show and store methods This also allows to remove the target-specific old configfs macros, and gets rid of the target_core_fabric_configfs.h header which only had one function declaration left that could be moved to a better place. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org> Acked-by: Nicholas Bellinger <nab@linux-iscsi.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
e986a35a |
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18-Jun-2015 |
Hannes Reinecke <hare@suse.de> |
tcm_loop: Send I_T_NEXUS_LOSS_OCCURRED UA If the virtual SAS link is set to 'offline' we should be queueing an I_T_NEXUS_LOSS_OCCURRED UA. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
b7446cac |
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18-Jun-2015 |
Hannes Reinecke <hare@suse.de> |
tcm_loop: Remove SAS vestigies tcm_loop is able to emulate several protocols, so remove last vestigies of the SAS protocol. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
f2d30680 |
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10-Jun-2015 |
Hannes Reinecke <hare@suse.de> |
target: use 64-bit LUNs As we're now using a list to hold the LUNs the target core can now converted to use 64-bit LUNs internally. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
bc0c94b1 |
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20-May-2015 |
Nicholas Bellinger <nab@linux-iscsi.org> |
target: Drop unnecessary core_tpg_register TFO parameter This patch drops unnecessary target_core_fabric_ops parameter usage for core_tpg_register() during fabric driver TFO->fabric_make_tpg() se_portal_group creation callback execution. Instead, use the existing se_wwn->wwn_tf->tf_ops pointer to ensure fabric driver is really using the same TFO provided at module_init time. Also go ahead and drop the forward TFO declarations tree-wide, and handling the special case for iscsi-target discovery TPG. Cc: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
7ad34a93 |
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03-May-2015 |
Christoph Hellwig <hch@lst.de> |
target: target_core_configfs.h is not needed in fabric drivers Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
649ee054 |
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14-Apr-2015 |
Bart Van Assche <bvanassche@acm.org> |
target: Move task tag into struct se_cmd + support 64-bit tags Simplify target core and target drivers by storing the task tag a.k.a. command identifier inside struct se_cmd. For several transports (e.g. SRP) tags are 64 bits wide. Hence add support for 64-bit tags. (Fix core_tmr_abort_task conversion spec warnings - nab) (Fix up usb-gadget to use 16-bit tags - HCH + bart) Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Andy Grover <agrover@redhat.com> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: <qla2xxx-upstream@qlogic.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Juergen Gross <jgross@suse.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
2650d71e |
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01-May-2015 |
Christoph Hellwig <hch@lst.de> |
target: move transport ID handling to the core Now that struct se_portal_group contains a protocol identifier field we can take all the code to format an parse protocol identifiers in CDBs into common code instead of leaving this to low-level drivers. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
2aeeafae |
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01-May-2015 |
Christoph Hellwig <hch@lst.de> |
target: remove the get_fabric_proto_ident method Now that we store the protocol identifier in the tpg structure we don't need this method. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
e4aae5af |
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01-May-2015 |
Christoph Hellwig <hch@lst.de> |
target: change core_tpg_register prototype Remove the unneeded fabric_ptr argument, and change the type argument to pass in a SPC protocol identifier. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
1667a459 |
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01-May-2015 |
Christoph Hellwig <hch@lst.de> |
tcm_loop: stop using se_tpg_fabric_ptr Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
144bc4c2 |
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13-Apr-2015 |
Christoph Hellwig <hch@lst.de> |
target: move node ACL allocation to core code Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
e1750d20 |
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13-Apr-2015 |
Christoph Hellwig <hch@lst.de> |
target: make the tpg_get_default_depth method optional All fabric drivers except for iSCSI always return 1, so implement that as default behavior. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
df75b956 |
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13-Apr-2015 |
Christoph Hellwig <hch@lst.de> |
tcm_loop: remove struct tcm_loop_nacl Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
9736f4ad |
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23-Apr-2015 |
Ilias Tsitsimpis <iliastsi@arrikto.com> |
target/loop: Enable VARLEN CDB support Field shost->max_cmd_len is used to inform Linux / the SCSI midlayer of the maximum CDB size an LLD is capable of handling. Set this field to SCSI_MAX_VARLEN_CDB_SIZE for target, to enable support for variable-sized CDBs (0x7E). Also remove the definition of TL_SCSI_MAX_CMD_LEN since it is now redundant. Signed-off-by: Ilias Tsitsimpis <iliastsi@arrikto.com> Signed-off-by: Vangelis Koukis <vkoukis@arrikto.com> Reviewed-by: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
9ac8928e |
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08-Apr-2015 |
Christoph Hellwig <hch@lst.de> |
target: simplify the target template registration API Instead of calling target_fabric_configfs_init() + target_fabric_configfs_register() / target_fabric_configfs_deregister() target_fabric_configfs_free() from every target driver, rewrite the API so that we have simple register/unregister functions that operate on a const operations vector. This patch also fixes a memory leak in several target drivers. Several target drivers namely called target_fabric_configfs_deregister() without calling target_fabric_configfs_free(). A large part of this patch is based on earlier changes from Bart Van Assche <bart.vanassche@sandisk.com>. (v2: Add a new TF_CIT_SETUP_DRV macro so that the core configfs code can declare attributes as either core only or for drivers) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
2e1cd90d |
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30-Mar-2015 |
Ming Lin <mlin@kernel.org> |
tcm_loop: fixup tpgt string to integer conversion Currently, for example, mkdir "tpgt_xyz" doesn't return error. mkdir /sys/kernel/config/target/loopback/naa.60014055f195952b/tpgt_xyz Replace obsoleted simple_strtoul with kstrtoul and check the conversion. Signed-off-by: Ming Lin <mlin@kernel.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
436f4a0a |
|
08-Feb-2015 |
Nicholas Bellinger <nab@linux-iscsi.org> |
loopback: Add fabric_prot_type attribute support This patch updates loopback to add a new fabric_prot_type TPG attribute, used for controlling LLD level protection into LIO when the backend device does not support T10-PI. Also, go ahead and set DIN_PASS + DOUT_PASS so target-core knows that it will be doing any WRITE_STRIP and READ_INSERT operations. Cc: Martin Petersen <martin.petersen@oracle.com> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
6e1a27b9 |
|
25-Mar-2015 |
Christoph Hellwig <hch@lst.de> |
target: mark tcm_loop_primary static Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
2f450cc1 |
|
12-Feb-2015 |
Bart Van Assche <bvanassche@acm.org> |
loop/usb/vhost-scsi/xen-scsiback: Fix use of __transport_register_session This patch changes loopback, usb-gadget, vhost-scsi and xen-scsiback fabric code to invoke transport_register_session() instead of the unprotected flavour, to ensure se_tpg->session_lock is taken when adding new session list nodes to se_tpg->tpg_sess_list. Note that since these four fabric drivers already hold their own internal TPG mutexes when accessing se_tpg->tpg_sess_list, and consist of a single se_session created through configfs attribute access, no list corruption can currently occur. So for correctness sake, go ahead and use the se_tpg->session_lock protected version for these four fabric drivers. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
68d81f40 |
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24-Nov-2014 |
Christoph Hellwig <hch@infradead.org> |
scsi: remove MSG_*_TAG defines For SPI drivers use the message definitions from scsi.h, and for target drivers introduce a new TCM_*_TAG namespace. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com
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#
efc3c1df |
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24-Nov-2014 |
Christoph Hellwig <hch@lst.de> |
scsi: remove ->change_queue_type method Since we got rid of ordered tag support in 2010 the prime use case of switching on and off ordered tags has been obsolete. The other function of enabling/disabling tagging entirely has only been correctly implemented by the 53c700 driver and isn't generally useful. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com Reviewed-by: Hannes Reinecke <hare@suse.de>
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#
506787a2 |
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26-Nov-2014 |
Hannes Reinecke <hare@suse.de> |
tcm_loop: Fix wrong I_T nexus association tcm_loop has the I_T nexus associated with the HBA. This causes commands to become misdirected if the HBA has more than one target portal group; any command is then being sent to the first target portal group instead of the correct one. The nexus needs to be associated with the target portal group instead. Signed-off-by: Hannes Reinecke <hare@suse.de> Cc: <stable@vger.kernel.org> # 3.0+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
db5ed4df |
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13-Nov-2014 |
Christoph Hellwig <hch@lst.de> |
scsi: drop reason argument from ->change_queue_depth Drop the now unused reason argument from the ->change_queue_depth method. Also add a return value to scsi_adjust_queue_depth, and rename it to scsi_change_queue_depth now that it can be used as the default ->change_queue_depth implementation. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de>
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#
c40ecc12 |
|
13-Nov-2014 |
Christoph Hellwig <hch@lst.de> |
scsi: avoid ->change_queue_depth indirection for queue full tracking All drivers use the implementation for ramping the queue up and down, so instead of overloading the change_queue_depth method call the implementation diretly if the driver opts into it by setting the track_queue_depth flag in the host template. Note that a few drivers validated the new queue depth in their change_queue_depth method, but as we never go over the queue depth set during slave_configure or the sysfs file this isn't nessecary and can safely be removed. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Venkatesh Srinivas <venkateshs@google.com>
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#
c8b09f6f |
|
03-Nov-2014 |
Christoph Hellwig <hch@lst.de> |
scsi: don't set tagging state from scsi_adjust_queue_depth Remove the tagged argument from scsi_adjust_queue_depth, and just let it handle the queue depth. For most drivers those two are fairly separate, given that most modern drivers don't care about the SCSI "tagged" status of a command at all, and many old drivers allow queuing of multiple untagged commands in the driver. Instead we start out with the ->simple_tags flag set before calling ->slave_configure, which is how all drivers actually looking at ->simple_tags except for one worke anyway. The one other case looks broken, but I've kept the behavior as-is for now. Except for that we only change ->simple_tags from the ->change_queue_type, and when rejecting a tag message in a single driver, so keeping this churn out of scsi_adjust_queue_depth is a clear win. Now that the usage of scsi_adjust_queue_depth is more obvious we can also remove all the trivial instances in ->slave_alloc or ->slave_configure that just set it to the cmd_per_lun default. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
2ecb204d |
|
03-Nov-2014 |
Christoph Hellwig <hch@lst.de> |
scsi: always assign block layer tags if enabled Allow a driver to ask for block layer tags by setting .use_blk_tags in the host template, in which case it will always see a valid value in request->tag, similar to the behavior when using blk-mq. This means even SCSI "untagged" commands will now have a tag, which is especially useful when using a host-wide tag map. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de>
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#
609aa22f |
|
30-Oct-2014 |
Christoph Hellwig <hch@lst.de> |
scsi: remove ordered_tags scsi_device field Remove the ordered_tags field, we haven't been issuing ordered tags based on it since the big barrier rework in 2010. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
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#
a62182f3 |
|
02-Oct-2014 |
Christoph Hellwig <hch@lst.de> |
scsi: provide a generic change_queue_type method Most drivers use exactly the same implementation, so provide it as a library function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Hannes Reinecke <hare@suse.de>
|
#
6375f890 |
|
02-Oct-2014 |
Hannes Reinecke <hare@suse.de> |
tcm_loop: Fixup tag handling The SCSI command tag is set to the tag assigned from the block layer, not the SCSI-II tag message. So we need to convert it into the correct SCSI-II tag message based on the device flags, not the tag value itself. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
33940d09 |
|
16-Sep-2014 |
Joern Engel <joern@logfs.org> |
target: encapsulate smp_mb__after_atomic() The target code has a rather generous helping of smp_mb__after_atomic() throughout the code base. Most atomic operations were followed by one and none were preceded by smp_mb__before_atomic(), nor accompanied by a comment explaining the need for a barrier. Instead of trying to prove for every case whether or not it is needed, this patch introduces atomic_inc_mb() and atomic_dec_mb(), which explicitly include the memory barriers before and after the atomic operation. For now they are defined in a target header, although they could be of general use. Most of the existing atomic/mb combinations were replaced by the new helpers. In a few cases the atomic was sandwiched in spin_lock/spin_unlock and I simply removed the barrier. I suspect that in most cases the correct conversion would have been to drop the barrier. I also suspect that a few cases exist where a) the barrier was necessary and b) a second barrier before the atomic would have been necessary and got added by this patch. Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
9cb78c16 |
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25-Jun-2014 |
Hannes Reinecke <hare@suse.de> |
scsi: use 64-bit LUNs The SCSI standard defines 64-bit values for LUNs, and large arrays employing large or hierarchical LUN numbers become more and more common. So update the linux SCSI stack to use 64-bit LUN numbers. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Christoph Hellwig <hch@infradead.org> Reviewed-by: Ewan Milne <emilne@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
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#
b43f1886 |
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17-Jun-2014 |
Nicholas Bellinger <nab@linux-iscsi.org> |
tcm_loop: Fix memory leak in tcm_loop_submission_work error path This patch fixes a tcm_loop_cmd descriptor memory leak in the tcm_loop_submission_work() error path, and would result in warnings about leaked tcm_loop_cmd_cache objects at module unload time. Go ahead and invoke kmem_cache_free() to release tl_cmd back to tcm_loop_cmd_cache before calling sc->scsi_done(). Reported-by: Sebastian Herbszt <herbszt@gmx.de> Tested-by: Sebastian Herbszt <herbszt@gmx.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
e2a4f55c |
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10-Jun-2014 |
Sagi Grimberg <sagig@mellanox.com> |
TARGET/sbc,loopback: Adjust command data length in case pi exists on the wire In various areas of the code, it is assumed that se_cmd->data_length describes pure data. In case that protection information exists over the wire (protect bits is are on) the target core re-calculates the data length from the CDB and the backed device block size (instead of each transport peeking in the cdb). Modify loopback device to include protection information in the transferred data length (like other scsi transports). Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Cc: stable@vger.kernel.org # 3.15+ Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
4e857c58 |
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17-Mar-2014 |
Peter Zijlstra <peterz@infradead.org> |
arch: Mass conversion of smp_mb__*() Mostly scripted conversion of the smp_mb__* barriers. Signed-off-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Link: http://lkml.kernel.org/n/tip-55dhyhocezdw1dg7u19hmh1u@git.kernel.org Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: linux-arch@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
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#
e70beee7 |
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02-Apr-2014 |
Nicholas Bellinger <nab@linux-iscsi.org> |
target: Pass in transport supported PI at session initialization In order to support local WRITE_INSERT + READ_STRIP operations for non PI enabled fabrics, the fabric driver needs to be able signal what protection offload operations are supported. This is done at session initialization time so the modes can be signaled by individual se_wwn + se_portal_group endpoints, as well as optionally across different transports on the same endpoint. For iser-target, set TARGET_PROT_ALL if the underlying ib_device has already signaled PI offload support, and allow this to be exposed via a new iscsit_transport->iscsit_get_sup_prot_ops() callback. For loopback, set TARGET_PROT_ALL to signal SCSI initiator mode operation. For all other drivers, set TARGET_PROT_NORMAL to disable fabric level PI. Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Or Gerlitz <ogerlitz@mellanox.com> Cc: Quinn Tran <quinn.tran@qlogic.com> Cc: Giridhar Malavali <giridhar.malavali@qlogic.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
131e6abc |
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22-Mar-2014 |
Nicholas Bellinger <nab@linux-iscsi.org> |
target: Add TFO->abort_task for aborted task resources release Now that TASK_ABORTED status is not generated for all cases by TMR ABORT_TASK + LUN_RESET, a new TFO->abort_task() caller is necessary in order to give fabric drivers a chance to unmap hardware / software resources before the se_cmd descriptor is released via the normal TFO->release_cmd() codepath. This patch adds TFO->aborted_task() in core_tmr_abort_task() in place of the original transport_send_task_abort(), and also updates all fabric drivers to implement this caller. The fabric drivers that include changes to perform cleanup via ->aborted_task() are: - iscsi-target - iser-target - srpt - tcm_qla2xxx The fabric drivers that currently set ->aborted_task() to NOPs are: - loopback - tcm_fc - usb-gadget - sbp-target - vhost-scsi For the latter five, there appears to be no additional cleanup required before invoking TFO->release_cmd() to release the se_cmd descriptor. v2 changes: - Move ->aborted_task() call into transport_cmd_finish_abort (Alex) Cc: Alex Leung <amleung21@yahoo.com> Cc: Mark Rustad <mark.d.rustad@intel.com> Cc: Roland Dreier <roland@kernel.org> Cc: Vu Pham <vu@mellanox.com> Cc: Chris Boot <bootc@bootc.net> Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Giridhar Malavali <giridhar.malavali@qlogic.com> Cc: Saurav Kashyap <saurav.kashyap@qlogic.com> Cc: Quinn Tran <quinn.tran@qlogic.com> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
b5b8e298 |
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19-Feb-2014 |
Sagi Grimberg <sagig@mellanox.com> |
Target/dif: Introduce protection-passthough-only mode Some transports (iSCSI/iSER/SRP/FC) support hardware INSERT/STRIP capabilities while other transports like loopback/vhost-scsi need perform this is software. This patch allows fabrics using SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC to signal the early LUN scan handling case where PROTECT CDB bits are set, but no fabric buffer has been provided. For transports which use generic new command these buffers have yet to be allocated. Also this way, target may support protection information against legacy initiators (writes are inserted and reads are stripped). (Only set prot_pto for loopback during early special case - nab) Signed-off-by: Sagi Grimberg <sagig@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
59dedde2 |
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23-Dec-2013 |
Nicholas Bellinger <nab@linux-iscsi.org> |
tcm_loop: Enable DIF/DIX modes in SCSI host LLD This patch updates tcm_loop_driver_probe() to set protection information using scsi_host_set_prot() and scsi_host_set_guard(), which currently enabled all modes of DIF/DIX protection, minus DIX TYPE0. Also, update tcm_loop_submission_work() to pass struct scsi_cmnd related protection into target_submit_cmd_map_sgls() during CDB dispatch. Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
def2b339 |
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23-Dec-2013 |
Nicholas Bellinger <nab@linux-iscsi.org> |
target: Add protection SGLs to target_submit_cmd_map_sgls This patch adds support to target_submit_cmd_map_sgls() for accepting 'sgl_prot' + 'sgl_prot_count' parameters for DIF protection information. Note the passed parameters are stored at se_cmd->t_prot_sg and se_cmd->t_prot_nents respectively. Also, update tcm_loop and vhost-scsi fabrics usage of target_submit_cmd_map_sgls() to take into account the new parameters. Cc: Martin K. Petersen <martin.petersen@oracle.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Sagi Grimberg <sagig@mellanox.com> Cc: Or Gerlitz <ogerlitz@mellanox.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
f0a6c693 |
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18-Dec-2013 |
Rashika Kheria <rashika.kheria@gmail.com> |
drivers: target: Mark functions as static in tcm_loop.c Mark functions tcm_loop_make_naa_tpg(), tcm_loop_drop_naa_tpg(), tcm_loop_make_scsi_hba() and tcm_loop_drop_scsi_hba() as static in loopback/tcm_loop.c because they are not used outside this file. This eliminates the following warning in loopback/tcm_loop.c: drivers/target/loopback/tcm_loop.c:1231:25: warning: no previous prototype for ‘tcm_loop_make_naa_tpg’ [-Wmissing-prototypes] drivers/target/loopback/tcm_loop.c:1276:6: warning: no previous prototype for ‘tcm_loop_drop_naa_tpg’ [-Wmissing-prototypes] drivers/target/loopback/tcm_loop.c:1308:16: warning: no previous prototype for ‘tcm_loop_make_scsi_hba’ [-Wmissing-prototypes] drivers/target/loopback/tcm_loop.c:1378:6: warning: no previous prototype for ‘tcm_loop_drop_scsi_hba’ [-Wmissing-prototypes] Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
8f4a1fb0 |
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16-Oct-2013 |
Hannes Reinecke <hare@suse.de> |
tcm_loop: Implement target reset Implement target reset by resetting the transport status. (nab: Remove unused ret in tcm_loop_target_reset) Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
969871cd |
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16-Oct-2013 |
Hannes Reinecke <hare@suse.de> |
tcm_loop: TCQ and command abort support Implement TCQ support, which enables us to do proper command abort, too. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
a314d700 |
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16-Oct-2013 |
Hannes Reinecke <hare@suse.de> |
tcm_loop: separate out tcm_loop_issue_tmr No functional change. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
fb2b2844 |
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16-Oct-2013 |
Hannes Reinecke <hare@suse.de> |
tcm_loop: Implement transport offline Add attribute 'transport_status' to simulate link failure. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
1ec59fee |
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16-Oct-2013 |
Hannes Reinecke <hare@suse.de> |
tcm_loop: Check for valid hba in tcm_loop_drop_nexus() Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
d80e224d |
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09-Oct-2013 |
Andy Grover <agrover@redhat.com> |
target: Remove TF_CIT_TMPL macro Remove a lingering macro that just hid a dereference. Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
4c76251e |
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05-Sep-2013 |
Nicholas Bellinger <nab@linux-iscsi.org> |
target: Update copyright ownership/year information to 2013 Update copyright ownership/year information for target-core, loopback, iscsi-target, tcm_qla2xx, vhost and iser-target. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
b79fafac |
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03-Jul-2013 |
Joern Engel <joern@logfs.org> |
target: make queue_tm_rsp() return void The return value wasn't checked by any of the callers. Assuming this is correct behaviour, we can simplify some code by not bothering to generate it. nab: Add srpt_queue_data_in() + srpt_queue_tm_rsp() nops around srpt_queue_response() void return Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
8946b077 |
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31-Mar-2013 |
Al Viro <viro@zeniv.linux.org.uk> |
tcm: switch to ->show_info() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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#
8f9f44f8 |
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02-Oct-2012 |
Nicholas Bellinger <nab@linux-iscsi.org> |
tcm_loop: Convert I/O path to use target_submit_cmd_map_sgls This patch converts tcm_loop to use target_submit_cmd_map_sgls() for I/O submission and mapping of pre-allocated SGL memory from incoming scsi_cmnd -> se_cmd descriptors. This includes removing the original open-coded fabric uses of target core callers to support transport_generic_map_mem_to_cmd() between target_setup_cmd_from_cdb() and transport_handle_cdb_direct() logic. (v2: Use renamed target_submit_cmd_map_sgls) Reported-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
9c58b7dd |
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15-Aug-2012 |
Roland Dreier <roland@purestorage.com> |
target: Simplify fabric sense data length handling Every fabric driver has to supply a se_tfo->set_fabric_sense_len() method, just so iSCSI can return an offset of 2. However, every fabric driver is already allocating a sense buffer and passing it into the target core, either via transport_init_se_cmd() or target_submit_cmd(). So instead of having iSCSI pass the start of its sense buffer into the core and then later tell the core to skip the first 2 bytes, it seems easier for iSCSI just to do the offset of 2 when it passes the sense buffer into the core. Then we can drop the se_tfo->set_fabric_sense_len() everywhere, and just add a couple of lines of code to iSCSI to set the sense data length to the beginning of the buffer right before it sends it over the network. (nab: Remove .set_fabric_sense_len usage from tcm_qla2xxx_npiv_ops + change transport_get_sense_buffer to follow v3.6-rc6 code w/o ->set_fabric_sense_len usage) Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
2ed772b7 |
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15-Aug-2012 |
Roland Dreier <roland@purestorage.com> |
target: Remove unused target_core_fabric_ops.get_fabric_sense_len method There are no callers of se_tfo->get_fabric_sense_len(), so we should stop having every fabric driver implement it. Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
70baf0ab |
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08-Jul-2012 |
Christoph Hellwig <hch@infradead.org> |
target: remove transport_generic_process_write Just call target_execute_cmd directly. Also, convert loopback, sbp, usb-gadget to use the newly exported target_execute_cmd(). Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
64f1db38 |
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20-May-2012 |
Christoph Hellwig <hch@infradead.org> |
target: remove control CDB flags We don't need three flags to classifiy the CDB as we can check for a NULL S/G list for a dataless command, and can infer from the absence of the data flag that we deal with a control CDB. Also remove the _SG_IO from the data CDB flag as all I/O is dont on S/G lists now. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
a12f41f8 |
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03-Apr-2012 |
Andy Grover <agrover@redhat.com> |
target: Rename target_allocate_tasks to target_setup_cmd_from_cdb This patch renames a horribly misnamed function that no longer allocate tasks to something more descriptive for it's modern use in target core. (nab: Fix up ib_srpt to use this as well ahead of a target_submit_cmd conversion) Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
ee9b866a |
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17-Mar-2012 |
Nicholas Bellinger <nab@linux-iscsi.org> |
loopback: Fix transport_generic_allocate_tasks error handling This patch addresses a tcm_loop bug with transport_generic_allocate_tasks() return checking in tcm_loop_submission_work() where other non zero return codes (including -EBUSY for reservation conflicts) are incorrectly falling through to transport_generic_map_mem_to_cmd() -> transport_handle_cdb_direct(). This bug was introduced into target-pending/for-next-merge with the following for-3.4 commit: commit 16786454acec0e0e55e32d508b3058b32c1f23f3 Author: Christoph Hellwig <hch@infradead.org> Date: Thu Feb 2 17:04:42 2012 -0500 tcm_loop: switch to using transport_handle_cdb_direct Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
28168905 |
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15-Mar-2012 |
Jörn Engel <joern@logfs.org> |
target: remove obvious warnings Get rid of a bunch of write-only variables. In a number of cases I suspect actual bugs to be present, so I left all of those for a second look. (nab: fix lio-core patch fuzz) Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
c7ec05c8 |
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28-Feb-2012 |
Nicholas Bellinger <nab@linux-iscsi.org> |
target: Drop unused legacy target_core_fabric_ops API callers This patch drops the following unused legacy API callers from target_core_fabric.h: *) TFO->fall_back_to_erl0() *) TFO->stop_session() *) TFO->sess_logged_in() *) TFO->is_state_remove() This patch also removes the stub usage in loopback, tcm_fc, iscsi_target, and ib_srpt fabric modules. Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
6cf3fa69 |
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14-Feb-2012 |
Roland Dreier <roland@purestorage.com> |
tcm_loop: Set residual field for SCSI commands If the target core signals an over- or under-run, tcm_loop should call scsi_set_resid() to tell the SCSI midlayer about the residual data length. The difference can be seen by doing something like strace -eioctl sg_raw -r 1024 /dev/sda 8 0 0 0 1 0 > /dev/null and looking at the "resid=" part of the SG_IO ioctl -- after this patch, the field is correctly reported as 512. Signed-off-by: Roland Dreier <roland@purestorage.com> Cc: stable@vger.kernel.org Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
16786454 |
|
02-Feb-2012 |
Christoph Hellwig <hch@infradead.org> |
tcm_loop: switch to using transport_handle_cdb_direct Now that we use a workqueue for I/O submission there is no need to use transport_generic_handle_cdb_map any more. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
afe2cb7f |
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02-Feb-2012 |
Christoph Hellwig <hch@infradead.org> |
tcm_loop: defer all command submissions to workqueue Apply the qla2xxx model of submitting all commands from a workqueue. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
f872c9f4 |
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02-Feb-2012 |
Christoph Hellwig <hch@infradead.org> |
tcm_loop: kill tcm_loop_allocate_core_cmd This function makes little sense as a separate abstraction as it's deeply interwinded with the control flow of its only caller. Merged it into tcm_loop_queuecommand after factoring out a helper to convert the task attribute representation. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
c8e31f26 |
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19-Jan-2012 |
Andy Grover <agrover@redhat.com> |
target: Add SCF_SCSI_TMR_CDB usage and drop se_tmr_req_cache Change the test for if a cmd is a tmr request to checking if SCF_SCSI_TMR_CDB (a new flag) is set in cmd->se_cmd_flags. Also remove se_tmr_req_cache usage in favor of kzalloc usage, and make core_tmr_alloc_req() return int + setup se_cmd->se_tmr_req directly and fix up various fabric module usages Cc: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
2e88efd3 |
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29-Nov-2011 |
Christoph Hellwig <hch@infradead.org> |
tcm_loop: bump max_sectors There is not reason to artifically limit max_sectors in tcm_loop, set it to UINT_MAX to allow stressing the large I/O handling in the target core using the loopback driver. Also remove various superflous defines hiding the values set in the host template. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
8359cf43 |
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23-Nov-2011 |
Jörn Engel <joern@logfs.org> |
target: remove useless casts A reader should spend an extra moment whenever noticing a cast, because either something special is going on that deserves extra attention or, as is all too often the case, the code is wrong. These casts, afaics, have all been useless. They cast a foo* to a foo*, cast a void* to the assigned type, cast a foo* to void*, before assigning it to a void* variable, etc. In a few cases I also removed an additional &...[0], which is equally useless. Lastly I added three FIXMEs where, to the best of my judgement, the code appears to have a bug. It would be good if someone could check these. Signed-off-by: Joern Engel <joern@logfs.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
c4795fb2 |
|
16-Nov-2011 |
Christoph Hellwig <hch@infradead.org> |
target: header reshuffle, part2 This reorganized the headers under include/target into: - target_core_base.h stays as is with all target-wide data stuctures and defines - target_core_backend.h contains the whole interface to I/O backends - target_core_fabric.h contains the whole interface to fabric modules Except for those only the various configfs macro headers stay around. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
33c3fafc |
|
14-Nov-2011 |
Christoph Hellwig <hch@infradead.org> |
target: remove the t_tasks_bidi se_cmd field And use a SCF_BIDI flag instead. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
6297b07c |
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12-Nov-2011 |
Nicholas Bellinger <nab@linux-iscsi.org> |
target: Drop config_item_name usage in fabric TFO->free_wwn() This patch removes config_item_name() informational usage of TFO->free_wwn() treewide in loopback, tcm_fc, ib_srpt and tcm_vhost module code. Using v4 target_core_fabric_configfs.c logic, a fabric call for config_item_name() in TFO->drop_wwn() context returns NULL as target_fabric_drop_wwn() invoking config_item_put() -> config_group_put() will release fabric_port->port_wwn.wwn_group before the last config_item_put() -> TFO->drop_wwn() is invoked. Reported-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
03e98c9e |
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04-Nov-2011 |
Nicholas Bellinger <nab@linux-iscsi.org> |
target: Address legacy PYX_TRANSPORT_* return code breakage This patch removes legacy usage of PYX_TRANSPORT_* return codes in a number of locations and addresses cases where transport_generic_request_failure() was returning the incorrect sense upon CHECK_CONDITION status after the v3.1 converson to use errno return codes. This includes the conversion of transport_generic_request_failure() to process cmd->scsi_sense_reason and handle extra TCM_RESERVATION_CONFLICT before calling transport_send_check_condition_and_sense() to queue up response status. It also drops PYX_TRANSPORT_OUT_OF_MEMORY_RESOURCES legacy usgae, and returns TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE w/ a response for these cases. transport_generic_allocate_tasks(), transport_generic_new_cmd(), backend SCF_SCSI_DATA_SG_IO_CDB ->do_task(), and emulated ->execute_task() have all been updated to set se_cmd->scsi_sense_reason and return errno codes universally upon failure. This includes cmd->scsi_sense_reason assignment in target_core_alua.c, target_core_pr.c and target_core_cdb.c emulation code. Finally it updates fabric modules to remove the legacy usage, and for TFO->new_cmd_map() callers forwards return values outside of fabric code. iscsi-target has also been updated to remove a handful of special cases related to the cleanup and signaling QUEUE_FULL handling w/ ft_write_pending() (v2: Drop extra SCF_SCSI_CDB_EXCEPTION check during failure from transport_generic_new_cmd, and re-add missing task->task_error_status assignment in transport_complete_task) Cc: Christoph Hellwig <hch@lst.de> Cc: stable@kernel.org Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
88dd9e26 |
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02-Nov-2011 |
Nicholas Bellinger <nab@linux-iscsi.org> |
target: Make TFO->check_stop_free return free status This patch converts target_core_fabric_ops->check_stop_free() usage in transport_cmd_check_stop() and associated fabric module usage to return '1' when the passed se_cmd has been released directly within ->check_stop_free(), or return '0' when the passed se_cmd has not been released. This addresses an issue where transport_cmd_finish_abort() -> transport_cmd_check_stop_to_fabric() was leaking descriptors during LUN_RESET for modules using ->check_stop_free(), but not directly releasing se_cmd in all cases. Cc: stable@kernel.org Signed-off-by: Nicholas Bellinger <nab@risingtidesystems.com>
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#
8cd79f24 |
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24-Oct-2011 |
Nicholas Bellinger <nab@linux-iscsi.org> |
tcm_loop: Add explict read buffer memset for SCF_SCSI_CONTROL_SG_IO_CDB This patch addresses an issue with buggy userspace code sending I/O via scsi-generic that does not explictly clear their associated read buffers. It adds an explict memset of the first SGL entry within tcm_loop_new_cmd_map() for SCF_SCSI_CONTROL_SG_IO_CDB payloads that are currently guaranteed to be a single SGL by target-core code. This issue is a side effect of the v3.1-rc1 merge to remove the extra memcpy between certain control CDB types using a contigious + cleared buffer in target-core, and performing a memcpy into the SGL list within tcm_loop. It was originally mainfesting itself by udev + scsi_id + scsi-generic not properly setting up the expected /dev/disk/by-id/ symlinks because the INQUIRY payload was containing extra bogus data preventing the proper NAA IEEE WWN from being parsed by userspace. Cc: Christoph Hellwig <hch@lst.de> Cc: Andy Grover <agrover@redhat.com> Cc: stable@kernel.org Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
0a020436 |
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10-Oct-2011 |
Nicholas Bellinger <nab@linux-iscsi.org> |
loopback: Prevent uninitialized use of tl_tpg in tcm_loop_queuecommand This patch fixes a bug with tcm_loop where performing a scsi_host rescan was causing an oops due to a received scsi_cmnd->device->id value not matching a previously configured tcm_loop_tpg entry in tcm_loop_hba->tl_hba_tpgs[] obtained from within tcm_loop_queuecommand() code. This fix adds an explict check for tcm_loop_tpg->tl_hba in order to ensure tcm_loop_make_naa_tpg() has already been invoked to initialize a given tcm_loop_tpg entry, and also adds an explict clear of tcm_loop_tpg->tl_hba from within the tcm_loop_drop_naa_tpg() release path. This bug was manifesting itself with the following OOPs: [176289.430909] BUG: unable to handle kernel NULL pointer dereference at 0000000000000090 [176289.431337] IP: [<ffffffffa0395617>] transport_processing_thread+0x1e3/0x794 [target_core_mod] [176289.431399] PGD 22e9b067 PUD 23375067 PMD 0 [176289.431399] Oops: 0000 [#1] SMP [176289.431815] CPU 1 [176289.431815] Modules linked in: tcm_loop target_core_stgt target_core_pscsi target_core_file target_core_iblock target_core_mod crc32c ib_cm ib_sa ib_mad ib_core qla2xxx scsi_tgt configfs fcoe libfcoe libfc scsi_transport_fc ipv6 iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi sr_mod cdrom sd_mod ata_piix libata e1000 mptspi mptscsih mptbase [last unloaded: target_core_mod] [176289.431815] [176289.431815] Pid: 12339, comm: LIO_iblock Tainted: G W 3.1.0-rc8+ [176289.431815] RIP: 0010:[<ffffffffa0395617>] [<ffffffffa0395617>] transport_processing_thread+0x1e3/0x794 [target_core_mod] [176289.431815] RSP: 0018:ffff880023bfbe10 EFLAGS: 00010283 [176289.431815] RAX: 0000000000000000 RBX: ffff88002d600040 RCX: ffff88002d600108 [176289.431815] RDX: ffff88000c9e50bc RSI: 0000000000000246 RDI: 0000000000000246 [176289.431815] RBP: ffff880023bfbee0 R08: ffff88002d600108 R09: 0000000000000000 [176289.431815] R10: ffff88002fc8cc80 R11: ffffffff81671b60 R12: ffff88002d600108 [176289.431815] R13: ffff88000c9e4f38 R14: ffff88000c9e50b8 R15: 0000000000000000 [176289.431815] FS: 0000000000000000(0000) GS:ffff88002fc80000(0000) knlGS:0000000000000000 [176289.431815] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b [176289.431815] CR2: 0000000000000090 CR3: 000000002a33f000 CR4: 00000000000006e0 [176289.431815] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [176289.431815] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [176289.431815] Process LIO_iblock (pid: 12339, threadinfo ffff880023bfa000, task ffff88002a2e0000) [176289.431815] Stack: [176289.431815] 0000000000011280 0000000000000246 ffff88002a2e0000 ffff880023a58900 [176289.431815] ffff880023bfbed0 ffff880023bfa000 ffff880023bfa000 ffff88000c9e50d0 [176289.431815] ffff88000c9e50c0 ffff88000c9e50bc ffff880023bfa000 ffff880023bfbfd8 [176289.431815] Call Trace: [176289.431815] [<ffffffff81056657>] ? wake_up_bit+0x25/0x25 [176289.431815] [<ffffffffa0395434>] ? transport_handle_cdb_direct+0x92/0x92 [target_core_mod] [176289.431815] [<ffffffff8105619a>] kthread+0x7d/0x85 [176289.431815] [<ffffffff813cbcb4>] kernel_thread_helper+0x4/0x10 [176289.431815] [<ffffffff8105611d>] ? kthread_worker_fn+0x16d/0x16d [176289.431815] [<ffffffff813cbcb0>] ? gs_change+0x13/0x13 [176289.431815] Code: 67 05 00 00 41 8b 84 24 4c ff ff ff ff c8 83 f8 11 0f 87 f0 04 00 00 89 c0 ff 24 c5 b0 c6 39 a0 0f 0b eb fe 48 8b 83 d8 00 00 00 [176289.431815] RIP [<ffffffffa0395617>] transport_processing_thread+0x1e3/0x794 [target_core_mod] [176289.431815] RSP <ffff880023bfbe10> [176289.431815] CR2: 0000000000000090 [176295.041004] ---[ end trace 85dc6865b23b8f3e ]--- Reported-by: Paolo Bonzini <pbonzini@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
dd503a5f |
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06-Oct-2011 |
Roland Dreier <roland@purestorage.com> |
target: Have core_tmr_alloc_req() take an explicit GFP_xxx flag Testing in_interrupt() to know when sleeping is allowed is not really reliable (since eg it won't be true if the caller is holding a spinlock). Instead have the caller tell core_tmr_alloc_req() what GFP_xxx to use; every caller except tcm_qla2xxx can use GFP_KERNEL. Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
82f1c8a4 |
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13-Sep-2011 |
Christoph Hellwig <hch@lst.de> |
target: push session reinstatement out of transport_generic_free_cmd Push session reinstatement out of transport_generic_free_cmd into the only caller that actually needs it. Clean up transport_generic_free_cmd a bit, and remove the useless comment. I'd love to add a more useful kerneldoc comment for it, but as this point I'm still a bit confused in where it stands in the command release stack. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
6708bb27 |
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08-Jun-2011 |
Andy Grover <agrover@redhat.com> |
target: Follow up core updates from AGrover and HCH (round 4) This patch contains the squashed version of forth round series cleanups from Andy and Christoph following the post heavy lifting in the preceeding: 'Eliminate usage of struct se_mem' and 'Make all control CDBs scatter-gather' changes. This also includes a conversion of target core and the v3.0 mainline fabric modules (loopback and tcm_fc) to use pr_debug and the CONFIG_DYNAMIC_DEBUG infrastructure! These have been squashed into this third and final round for v3.1. target: Remove ifdeffed code in t_g_process_write target: Remove direct ramdisk code target: Rename task_sg_num to task_sg_nents target: Remove custom debug macros for pr_debug. Use pr_err(). target: Remove custom debug macros in mainline fabrics target: Set WSNZ=1 in block limits VPD. Abort if WRITE_SAME sectors = 0 target: Remove transport do_se_mem_map callback target: Further simplify transport_free_pages target: Redo task allocation return value handling target: Remove extra parentheses target: change alloc_task call to take *cdb, not *cmd (nab: Fix bogus struct file assignments in fd_do_readv and fd_do_writev) Signed-off-by: Andy Grover <agrover@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
ec98f782 |
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20-Jul-2011 |
Andy Grover <agrover@redhat.com> |
target: Eliminate usage of struct se_mem Both backstores and fabrics use arrays of struct scatterlist to describe data buffers. However TCM used struct se_mems, basically a linked list of scatterlist entries. We are able to simplify the code by eliminating this intermediate data structure and just using struct scatterlist[] throughout. Also, moved attachment of task to cmd out of transport_generic_get_task and into allocate_control_task and allocate_data_tasks. The reasoning is that it's nonintuitive that get_task should automatically add it to the cmd's task list -- it should just return an allocated, initialized task. That's all it should do, based on the function's name, so either the function shouldn't do it, or the name should change to encapsulate the entire essence of what it does. (nab: Fix compile warnings in tcm_fc, and make transport_kmap_first_data_page honor sg->offset for SGLs from contigious memory with TCM_Loop, and fix control se_cmd descriptor memory leak) Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
a57b5d36 |
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27-Jun-2011 |
Jesper Juhl <jj@chaosbits.net> |
loopback: Fix memory leak in tcm_loop_make_scsi_hba() There is a memory leak in tcm_loop_make_scsi_hba(). If all the strstr() calls return NULL and we end up at return ERR_PTR(-EINVAL); then we'll be leaking the memory previously allocated to tl_hba as that variable goes out of scope. This patch should fix the leak. Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
824cc5ff |
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22-Jun-2011 |
Jesper Juhl <jj@chaosbits.net> |
loopback: Remove duplicate scsi/scsi_tcq.h include Signed-off-by: Jesper Juhl <jj@chaosbits.net> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
12f09ccb |
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02-Apr-2011 |
Dan Carpenter <error27@gmail.com> |
loopback: off by one in tcm_loop_make_naa_tpg() This is an off by one 'tgpt' check in tcm_loop_make_naa_tpg() that could result in memory corruption. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
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#
35462975 |
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31-May-2011 |
Christoph Hellwig <hch@infradead.org> |
target: merge release_cmd methods The release_cmd_to_pool and release_cmd_direct methods are always the same. Merge them into a single release_cmd method, and clean up the fallout. (nab: fix breakage in transport_generic_free_cmd() parameter build breakage in drivers/target/tcm_fc/tfc_cmd.c) Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
dc2e652d |
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31-May-2011 |
Christoph Hellwig <hch@infradead.org> |
target: remove the always-noop ->new_cmd_failure method Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
a1d8b49a |
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02-May-2011 |
Andy Grover <agrover@redhat.com> |
target: Updates from AGrover and HCH (round 3) This patch contains a squashed version of third round series cleanups, improvements ,and simplfications from Andy and Christoph ahead of the heavy lifting between round 3 -> 4 for the target core SGL conversion. This include cleanups to the main target I/O path and other miscellaneous updates. target: Replace custom sg<->buf functions with lib funcs target: Simplify sector limiting code target: get_cdb should never return NULL target: Simplify transport_memcpy_se_mem_read_contig target: Use assignment rather than increment for t_task_cdbs target: Don't pass dma_size to generic_get_mem target: Pass sg with type scatterlist in transport_map_sg_to_mem target: Move task_sg_num next to task_sg in struct se_task target: inline struct se_transport_task into struct se_cmd target: Change name & semantics of transport_get_sectors() target: Remove unused members of se_cmd target: Rename se_cmd.t_task_cdbs to t_task_list_num target: Fix some spelling target: Remove unused var from transport_generic_do_tmr target: map_sg_to_mem: return sg_count in return value target/pscsi: Use min_t for sector limits target/pscsi: Unused param for pscsi_get_bio() target: Rename get_cdb_count to allocate_tasks target: Make transport_generic_new_cmd() available for iscsi-target target: Remove fabric callback to allocate iovecs target: Fix transport_generic_new_cmd WRITE comment (hch: Use __GFP_ZERO usage for alloc_pages() usage) Signed-off-by: Andy Grover <agrover@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
5951146d |
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19-Jul-2011 |
Andy Grover <agrover@redhat.com> |
target: More core cleanups from AGrover (round 2) This patch contains the squashed version of second round of target core cleanups and simplifications and Andy and Co. It also contains a handful of fixes to address bugs the original series and other minor cleanups. Here is the condensed shortlog: target: Remove unneeded casts to void* target: Rename get_lun_for_{cmd,tmr} to lookup_{cmd,tmr}_lun target: Make t_task a member of se_cmd, not a pointer target: Handle functions returning "-2" target: Use cmd->se_dev over cmd->se_lun->lun_se_dev target: Embed qr in struct se_cmd target: Replace embedded struct se_queue_req with a list_head target: Rename list_heads that are nodes in struct se_cmd to "*_node" target: Fold transport_device_setup_cmd() into lookup_{tmr,cmd}_lun() target: Make t_mem_list and t_mem_list_bidi members of t_task target: Add comment & cleanup transport_map_sg_to_mem() target: Remove unneeded checks in transport_free_pages() (Roland: Fix se_queue_req removal leftovers OOPs) (nab: Fix transport_lookup_tmr_lun failure case) (nab: Fix list_empty(&cmd->t_task.t_mem_bidi_list) inversion bugs) Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
e3d6f909 |
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19-Jul-2011 |
Andy Grover <agrover@redhat.com> |
target: Core cleanups from AGrover (round 1) This patch contains the squashed version of a number of cleanups and minor fixes from Andy's initial series (round 1) for target core this past spring. The condensed log looks like: target: use errno values instead of returning -1 for everything target: Rename transport_calc_sg_num to transport_init_task_sg target: Fix leak in error path in transport_init_task_sg target/pscsi: Remove pscsi_get_sh() usage target: Make two runtime checks into WARN_ONs target: Remove hba queue depth and convert to spin_lock_irq usage target: dev->dev_status_queue_obj is unused target: Make struct se_queue_req.cmd type struct se_cmd * target: Remove __transport_get_qr_from_queue() target: Rename se_dev->g_se_dev_list to se_dev_node target: Remove struct se_global target: Simplify scsi mib index table code target: Make dev_queue_obj a member of se_device instead of a pointer target: remove extraneous returns at end of void functions target: Ensure transport_dump_vpd_ident_type returns null-terminated str target: Function pointers don't need to use '&' to be assigned target: Fix comment in __transport_execute_tasks() target: Misc style cleanups target: rename struct pr_reservation_template to pr_reservation target: Remove #defines that just perform indirection target: Inline transport_get_task_from_execute_queue() target: Minor header comment fixes Signed-off-by: Andy Grover <agrover@redhat.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
efa4988d |
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19-Jul-2011 |
Nicholas Bellinger <nab@linux-iscsi.org> |
target: Remove unnecessary *cdb transport_get_lun_for_cmd parameter This patch removes the now unnecessary 'unsigned char *cdb' function parameter from transport_get_lun_for_cmd(). This also includes updating lio-target, tcm_loop and tcm_fc usage of transport_get_lun_for_cmd(). Reported-by: Fubo Chen <fubo.chen@gmail.com> Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
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60d645a4 |
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15-Jun-2011 |
Dan Carpenter <error27@gmail.com> |
target: Fix incorrect strlen() NULL terminator checks This patch fixes a number of cases in target core using an incorrectly if (strlen(foo) > SOME_MAX_SIZE) As strlen() returns the number of characters in the string not counting the NULL character at the end. So if you do something like: char buf[10]; if (strlen("0123456789") > 10) return -ETOOLONG; snprintf(buf, 10, "0123456789"); printf("%s\n", buf); then the last "9" gets chopped off and only "012345678" is printed. Plus I threw in one small related cleanup. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
552523dc |
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15-Jun-2011 |
Dan Carpenter <error27@gmail.com> |
target: Fix ERR_PTR dereferencing bugs transport_init_session() and core_tmr_alloc_req() never return NULL, they only return ERR_PTRs on error. v2: Fix patch to return PTR_ERR(tl_nexus->se_sess) from Ankit Jain's feedback. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Ankit Jain <jankit@suse.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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#
e44ba033 |
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20-Jun-2011 |
Vitaliy Ivanov <vitalivanov@gmail.com> |
treewide: remove duplicate includes Many stupid corrections of duplicated includes based on the output of scripts/checkincludes.pl. Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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#
61db1802 |
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19-May-2011 |
Nicholas Bellinger <nab@linux-iscsi.org> |
[SCSI] target: Convert TASK_ATTR to scsi_tcq.h definitions This patch converts target core and follwing scsi-misc upstream fabric modules to use include/scsi/scsi_tcq.h includes for SIMPLE, HEAD_OF_QUEUE and ORDERED SCSI tasks instead of scsi/libsas.h with TASK_ATTR* *) tcm_loop: Convert tcm_loop_allocate_core_cmd() + tcm_loop_device_reset() to scsi_tcq.h *) tcm_fc: Convert ft_send_cmd() from FCP_PTA_* to scsi_tcq.h Reported-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org> Signed-off-by: James Bottomley <jbottomley@parallels.com>
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#
1078da16 |
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19-May-2011 |
Nicholas Bellinger <nab@linux-iscsi.org> |
[SCSI] target: Convert REPORT_LUNs to use int_to_scsilun This patch converts transport_core_report_lun_response() to use drivers/scsi/scsi_scan.c:int_to_scsilun instead of using the struct target_core_fabric_ops->pack_lun() fabric provided API vector. It also removes the tfo->pack_lun check from target_fabric_tf_ops_check() and removes from struct target_core_fabric_ops->pack_lun() from target_core_fabric_ops.h, and the following mainline scsi-misc fabric modules: *) tcm_loop: Drop tcm_loop_pack_lun() usage *) tcm_fc: Drop ft_pack_lun() usage Reported-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org> Signed-off-by: James Bottomley <jbottomley@parallels.com>
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#
e66ecd50 |
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19-May-2011 |
Nicholas Bellinger <nab@linux-iscsi.org> |
[SCSI] target: Convert TASK_ATTR to scsi_tcq.h definitions This patch converts target core and follwing scsi-misc upstream fabric modules to use include/scsi/scsi_tcq.h includes for SIMPLE, HEAD_OF_QUEUE and ORDERED SCSI tasks instead of scsi/libsas.h with TASK_ATTR* *) tcm_loop: Convert tcm_loop_allocate_core_cmd() + tcm_loop_device_reset() to scsi_tcq.h *) tcm_fc: Convert ft_send_cmd() from FCP_PTA_* to scsi_tcq.h Reported-by: Christoph Hellwig <hch@infradead.org> Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org> Signed-off-by: James Bottomley <jbottomley@parallels.com>
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#
d60b7a0f |
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19-May-2011 |
Nicholas Bellinger <nab@linux-iscsi.org> |
[SCSI] target: Convert REPORT_LUNs to use int_to_scsilun This patch converts transport_core_report_lun_response() to use drivers/scsi/scsi_scan.c:int_to_scsilun instead of using the struct target_core_fabric_ops->pack_lun() fabric provided API vector. It also removes the tfo->pack_lun check from target_fabric_tf_ops_check() and removes from struct target_core_fabric_ops->pack_lun() from target_core_fabric_ops.h, and the following mainline scsi-misc fabric modules: *) tcm_loop: Drop tcm_loop_pack_lun() usage *) tcm_fc: Drop ft_pack_lun() usage Reported-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org> Signed-off-by: James Bottomley <jbottomley@parallels.com>
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#
3703b2c5 |
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18-Mar-2011 |
Nicholas Bellinger <nab@linux-iscsi.org> |
[SCSI] tcm_loop: Add multi-fabric Linux/SCSI LLD fabric module This patch adds the TCM_Loop Linux/SCSI LLD fabric module for accessing TCM device backstores as locally accessable SCSI LUNs in virtual SAS, FC, and iSCSI Target ports using the generic fabric TransportID and Target Port WWN naming handlers from TCM's target_core_fabric_lib.c The TCM_Loop module uses the generic fabric configfs infratructure provided by target_core_fabric_configfs.c and adds a module dependent attribute for the creation/release of the virtual I_T Nexus connected the TCM_Loop Target and Initiator Ports. TCM_Loop can also be used with scsi-generic and BSG drivers so that STGT userspace fabric modules, QEMU-KVM and other hypervisor SCSI passthrough support can access TCM device backstore and control CDB emulation. For more information please see: http://linux-iscsi.org/wiki/Tcm_loop [jejb: fixed up checkpatch stuff] Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
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