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2017-04-20scsi: introduce a result field in struct scsi_requestChristoph Hellwig1-4/+4
This passes on the scsi_cmnd result field to users of passthrough requests. Currently we abuse req->errors for this purpose, but that field will go away in its current form. Note that the old IDE code abuses the errors field in very creative ways and stores all kinds of different values in it. I didn't dare to touch this magic, so the abuses are brought forward 1:1. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com> Reviewed-by: Bart Van Assche <Bart.VanAssche@sandisk.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-27block: split scsi_request out of struct requestChristoph Hellwig1-11/+23
And require all drivers that want to support BLOCK_PC to allocate it as the first thing of their private data. To support this the legacy IDE and BSG code is switched to set cmd_size on their queues to let the block layer allocate the additional space. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2017-01-27block/bsg: move queue creation into bsg_setup_queueChristoph Hellwig1-10/+11
Simply the boilerplate code needed for bsg nodes a bit. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Jens Axboe <axboe@fb.com>
2016-12-14Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds1-3/+20
Pull SCSI updates from James Bottomley: "This update includes the usual round of major driver updates (ncr5380, lpfc, hisi_sas, megaraid_sas, ufs, ibmvscsis, mpt3sas). There's also an assortment of minor fixes, mostly in error legs or other not very user visible stuff. The major change is the pci_alloc_irq_vectors replacement for the old pci_msix_.. calls; this effectively makes IRQ mapping generic for the drivers and allows blk_mq to use the information" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (256 commits) scsi: qla4xxx: switch to pci_alloc_irq_vectors scsi: hisi_sas: support deferred probe for v2 hw scsi: megaraid_sas: switch to pci_alloc_irq_vectors scsi: scsi_devinfo: remove synchronous ALUA for NETAPP devices scsi: be2iscsi: set errno on error path scsi: be2iscsi: set errno on error path scsi: hpsa: fallback to use legacy REPORT PHYS command scsi: scsi_dh_alua: Fix RCU annotations scsi: hpsa: use %phN for short hex dumps scsi: hisi_sas: fix free'ing in probe and remove scsi: isci: switch to pci_alloc_irq_vectors scsi: ipr: Fix runaway IRQs when falling back from MSI to LSI scsi: dpt_i2o: double free on error path scsi: cxlflash: Migrate scsi command pointer to AFU command scsi: cxlflash: Migrate IOARRIN specific routines to function pointers scsi: cxlflash: Cleanup queuecommand() scsi: cxlflash: Cleanup send_tmf() scsi: cxlflash: Remove AFU command lock scsi: cxlflash: Wait for active AFU commands to timeout upon tear down scsi: cxlflash: Remove private command pool ...
2016-11-17scsi: fc: move FC transport's bsg code to bsg-libJohannes Thumshirn1-2/+1
Now that all conversions are done, move the FibreChannel bsg code over to the bsg library. This patch is derived from work done by Mike Christie in 2011 [1] but only the iscsi parts got merged back then. [1] http://marc.info/?l=linux-scsi&m=131149780921009&w=2 Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-11-17block: add bsg_job_put() and bsg_job_get()Johannes Thumshirn1-3/+14
Add bsg_job_put() and bsg_job_get() so don't need to export bsg_destroy_job() any more. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-11-17scsi: fc: use bsg_softirq_doneJohannes Thumshirn1-1/+2
bsg_softirq_done() and fc_bsg_softirq_done() are copies of each other, so ditch the fc specific one. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-11-17scsi: fc: Use bsg_destroy_jobJohannes Thumshirn1-2/+5
fc_destroy_bsgjob() and bsg_destroy_job() are now 1:1 copies, so use the latter. As bsg_destroy_job() comes from bsg-lib we need to select it in Kconfig once CONFOG_SCSI_FC_ATTRS is active. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-11-17block: add reference counting for struct bsg_jobJohannes Thumshirn1-2/+5
Add reference counting to 'struct bsg_job' so we can implement a reuqest timeout handler for bsg_jobs, which is needed for Fibre Channel. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-11-14bsg: Add sparse annotations to bsg_request_fn()Bart Van Assche1-0/+2
Avoid that sparse complains about unbalanced lock actions. Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com> Signed-off-by: Jens Axboe <axboe@fb.com>
2012-12-06bsg: Remove unused function bsg_goose_queue()Bart Van Assche1-13/+0
The function bsg_goose_queue() does not have any in-tree callers, so let's remove it. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Acked-by: Tejun Heo <tj@kernel.org> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2012-06-25block: drop custom queue draining used by scsi_transport_{iscsi|fc}Tejun Heo1-53/+0
iscsi_remove_host() uses bsg_remove_queue() which implements custom queue draining. fc_bsg_remove() open-codes mostly identical logic. The draining logic isn't correct in that blk_stop_queue() doesn't prevent new requests from being queued - it just stops processing, so nothing prevents new requests to be queued after the logic determines that the queue is drained. blk_cleanup_queue() now implements proper queue draining and these custom draining logics aren't necessary. Drop them and use bsg_unregister_queue() + blk_cleanup_queue() instead. Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: Vivek Goyal <vgoyal@redhat.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: James Smart <james.smart@emulex.com> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2011-10-31block: Change module.h -> export.h in bsg-lib.cPaul Gortmaker1-1/+1
This file isn't using full modular functionality, and hence can be "downgraded" to just using the export.h header. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-08-02bsg-lib: add module.h includeJens Axboe1-0/+1
Due to conflicts with the moduleh tree in linux-next, we run into an include file mess. We really need export.h in that tree, but if we add module.h locally then the issue is easier to resolve. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
2011-07-31block: add bsg helper libraryMike Christie1-0/+297
This moves the FC classes bsg code to the block layer and makes it a lib so that other classes like iscsi and SAS can use it. It is helpful because working with the request queue, bios, creating scatterlists, etc are a pain that the LLD does not have to worry about with normal IOs and should not have to worry about for bsg requests. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
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