- 01 Mar, 2017 2 commits
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Chris Leech authored
There's a rather long standing regression from the commit "libiscsi: Reduce locking contention in fast path" Depending on iSCSI target behavior, it's possible to hit the case in iscsi_complete_task where the task is still on a pending list (!list_empty(&task->running)). When that happens the task is removed from the list while holding the session back_lock, but other task list modification occur under the frwd_lock. That leads to linked list corruption and eventually a panicked system. Rather than back out the session lock split entirely, in order to try and keep some of the performance gains this patch adds another lock to maintain the task lists integrity. Major enterprise supported kernels have been backing out the lock split for while now, thanks to the efforts at IBM where a lab setup has the most reliable reproducer I've seen on this issue. This patch has been tested there successfully. Signed-off-by:
Chris Leech <cleech@redhat.com> Fixes: 659743b0 ("[SCSI] libiscsi: Reduce locking contention in fast path") Reported-by:
Prashantha Subbarao <psubbara@us.ibm.com> Reviewed-by:
Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com> Cc: <stable@vger.kernel.org> # v3.15+ Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Colin Ian King authored
The call to qedi_setup_int is not updating the return code rc yet rc is being checked for an error. Fix this by assigning rc to the return code from the call to qedi_setup_int. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Acked-by:
Manish Rangankar <Manish.Rangankar@cavium.com> Signed-off-by:
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- 28 Feb, 2017 4 commits
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Dupuis, Chad authored
Signed-off-by:
Chad Dupuis <chad.dupuis@cavium.com> Signed-off-by:
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Colin Ian King authored
The check for ret being zero is redundant as a few statements earlier we break out of the while loop if ret is non-zero. Thus we can remove the zero check and also the dead-code non-zero case too. Detected by CoverityScan, CID#1411632 ("Logically Dead Code") Signed-off-by:Dave Carroll <david.carroll@microsemi.com> Signed-off-by:
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Arnd Bergmann authored
dma_addr_t may be either u32 or u64, depending on the kernel configuration, and we get a warning for the 32-bit case: drivers/scsi/lpfc/lpfc_nvme.c: In function 'lpfc_nvme_ls_req': drivers/scsi/lpfc/lpfc_logmsg.h:52:52: error: format '%llu' expects argument of type 'long long unsigned int', but argument 11 has type 'dma_addr_t {aka unsigned int}' [-Werror=format=] drivers/scsi/lpfc/lpfc_logmsg.h:52:52: error: format '%llu' expects argument of type 'long long unsigned int', but argument 12 has type 'dma_addr_t {aka unsigned int}' [-Werror=format=] drivers/scsi/lpfc/lpfc_nvme.c: In function 'lpfc_nvme_ls_abort': drivers/scsi/lpfc/lpfc_logmsg.h:52:52: error: format '%llu' expects argument of type 'long long unsigned int', but argument 11 has type 'dma_addr_t {aka unsigned int}' [-Werror=format=] drivers/scsi/lpfc/lpfc_logmsg.h:52:52: error: format '%llu' expects argument of type 'long long unsigned int', but argument 12 has type 'dma_addr_t {aka unsigned int}' [-Werror=format=] printk has a special "%pad" format string that passes the dma address by reference to solve this problem. Fixes: 01649561 ("scsi: lpfc: NVME Initiator: bind to nvme_fc api") Signed-off-by:Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Arnd Bergmann authored
The new debugfs output causes a link error on 32-bit architectures: ERROR: "__aeabi_uldivmod" [drivers/scsi/lpfc/lpfc.ko] undefined! This code is not performance critical, so we can simply use div_u64(). [mkp: fixed up whitespace] Fixes: bd2cdd5e ("scsi: lpfc: NVME Initiator: Add debugfs support") Fixes: 2b65e182 ("scsi: lpfc: NVME Target: Add debugfs support") Signed-off-by:
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- 23 Feb, 2017 19 commits
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Finn Thain authored
The mac_scsi driver still gets disabled when SCSI=m. This should have been fixed back when I enabled the tristate but I didn't see the bug. Fixes: 6e9ae6d5 ("[PATCH] mac_scsi: Add module option to Kconfig") Signed-off-by:
Finn Thain <fthain@telegraphics.com.au> Signed-off-by:
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Don Brace authored
Remove device driver failed to check map error messages Reported-by:
Johnny Bieren <jbieren@redhat.com> Tested-by:
Scott Teel <scott.teel@microsemi.com> Signed-off-by:
Don Brace <don.brace@microsemi.com> Signed-off-by:
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Colin Ian King authored
Trivial fix to spelling mistake in pr_err message Signed-off-by:
Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by:
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Raghava Aditya Renukunta authored
Current driver Hotplug processing code skips over Enclosure channel, therefore any addition/removal of expander enclosure is not processed. Additionally device addition code relies on older device type, which prevents the hotplug of adapter expanders. Fixed by removing code that skips over Enclosure channels and using the latest device type for addition or removal or enclosure expanders. Fixes: 6223a39f (scsi: aacraid: Added support for hotplug) Signed-off-by:
Raghava Aditya Renukunta <RaghavaAditya.Renukunta@microsemi.com> Reviewed-by:
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Hannes Reinecke authored
Cleanup the MSI-X handling allowing us to use the PCI-layer provided vector allocation. Signed-off-by:
Hannes Reinecke <hare@suse.com> Reviewed-by:
Christoph Hellwig <hch@lst.de> Acked-by:
Sreekanth Reddy <sreekanth.reddy@broadcom.com> Signed-off-by:
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Dupuis, Chad authored
Based on an original patch by Hannes Reinecke. The driver didn't follow the atomic_t vs refcount_t change, and anyway one should be using kref_read() instead of accessing the counter inside an kref. Fixes: 61d8658b ("scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.) Cc: Hannes Reinecke <hare@suse.de> Cc: Nilesh Javali <nilesh.javali@cavium.com> Signed-off-by:
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Christoph Hellwig authored
And switch all callers to use scsi_execute instead. Signed-off-by:
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Christoph Hellwig authored
All but one caller want the decoded sense header, so offer the existing __scsi_execute helper as the public scsi_execute API to simply the callers. Signed-off-by:
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Christoph Hellwig authored
Add a sshdr argument to __scsi_execute so that we can decode the sense data directly into the sense header instead of needing a copy of it. Signed-off-by:
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Christoph Hellwig authored
It's a tiny structure that can be allocated on the stack, don't complicate the code by making it optional. Signed-off-by:
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Christoph Hellwig authored
Remove bogus evaluations of retval and sshdr when the device is offline, and fix a possible NULL pointer dereference by allocating the 8 byte sized sense header on stack. Signed-off-by:
Hannes Reinecke <hare@suse.de> Signed-off-by:
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Christoph Hellwig authored
This gives us a clear state even if a command didn't return sense data. Signed-off-by:
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Dan Carpenter authored
We accidentally return an uninitialized variable on success. Fixes: b6ff1b14 ("[SCSI] scsi_dh: Update EMC handler") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
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Colin Ian King authored
On an allocation failure of gd, the current exit path is via out_free_devt which leaves sdpk still allocated and hence it gets leaked. Fix this by correcting the order of resource free'ing with a change in the error exit path labels. Detected by CoverityScan, CID#1399519 ("Resource Leak") Fixes: 0dba1314 ("scsi, block: fix duplicate bdi name registration crashes") Signed-off-by:Bart Van Assche <Bart.VanAssche@sandisk.com> Signed-off-by:
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Wei Yongjun authored
Fixes the following sparse warning: drivers/scsi/sd.c:3087:6: warning: symbol 'sd_devt_release' was not declared. Should it be static? Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by:
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Dupuis, Chad authored
The QLogic FastLinQ Driver for FCoE (qedf) is the FCoE specific module for 41000 Series Converged Network Adapters by QLogic. This patch consists of following changes: - MAINTAINERS Makefile and Kconfig changes for qedf - PCI driver registration - libfc/fcoe host level initialization - SCSI host template initialization and callbacks - Debugfs and log level infrastructure - Link handling - Firmware interface structures - QED core module initialization - Light L2 interface callbacks - I/O request initialization - Firmware I/O completion handling - Firmware ELS request/response handling - FIP request/response handled by the driver itself Signed-off-by:
Nilesh Javali <nilesh.javali@cavium.com> Signed-off-by:
Saurav Kashyap <saurav.kashyap@cavium.com> Signed-off-by:
Arun Easi <arun.easi@cavium.com> Signed-off-by:
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Michael Hernandez authored
For target mode, we need to increase minimum vectors value by one to account for ATIO queue. Following stack trace will be seen Call Trace: qla24xx_config_rings+0x15a/0x230 [qla2xxx] qla2x00_init_rings+0x1a1/0x3a0 [qla2xxx] qla2x00_restart_isp+0x5c/0x120 [qla2xxx] qla2x00_abort_isp+0x138/0x430 [qla2xxx] ? __schedule+0x260/0x580 qla2x00_do_dpc+0x3bc/0x920 [qla2xxx] ? qla2x00_relogin+0x290/0x290 [qla2xxx] ? schedule+0x3a/0xa0 ? qla2x00_relogin+0x290/0x290 [qla2xxx] kthread+0x103/0x140 ? __kthread_init_worker+0x40/0x40 ret_from_fork+0x29/0x40 RIP: qlt_24xx_config_rings+0x6c/0x90 [mkp: fixed Fixes: hash] Cc: <stable@vger.kernel.org> Fixes: 17e5fc58 ("scsi: qla2xxx: fix MSI-X vector affinity") Signed-off-by:
Michael Hernandez <michael.hernandez@cavium.com> Signed-off-by:
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Michael Hernandez authored
Target mode initialization was not calculating response queue values correctly resulting into one less MSI-X vector. [mkp: fixed Fixes: hash] Cc: <stable@vger.kernel.org> Fixes: 093df737 ("scsi: qla2xxx: Fix Target mode handling with Multiqueue changes.") Signed-off-by:
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Michael Hernandez authored
This patch cleaned up queue configuration code, such that once initialized, we should not touch msix_count value. This will prevent incorrect numbers of MSI-X vectors requested while performing target mode configuration. [mkp: fixed Fixes: hash] Cc: <stable@vger.kernel.org> Fixes: d7459527 ("scsi: qla2xxx: Add multiple queue pair functionality.") Signed-off-by:
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- 22 Feb, 2017 15 commits
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James Smart authored
Add missing Kconfig NVME dependencies. Signed-off-by:
James Smart <james.smart@broadcom.com> Signed-off-by:
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James Smart authored
Update lpfc version to 11.2.0.7 Signed-off-by:
Dick Kennedy <dick.kennedy@broadcom.com> Signed-off-by:
Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by:
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James Smart authored
Update copyrights to 2017 for all files touched in this patch set Signed-off-by:
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James Smart authored
NVME Target: Add debugfs support Adds debugfs snippets to cover the new NVME target functionality Signed-off-by:
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James Smart authored
NVME Target: Tie in to NVME Fabrics nvmet_fc LLDD target api Adds the routines to: - register and deregister the FC port as a nvmet-fc targetport - binding of nvme queues to adapter WQs - receipt and passing of NVME LS's to transport, sending transport response - receipt of NVME FCP CMD IUs, processing FCP target io data transmission commands; transmission of FCP io response - Abort operations for tgt io exchanges [mkp: fixed space at end of file warning] Signed-off-by:
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James Smart authored
NVME Target: Merge into FC discovery Adds NVME PRLI handling and Nameserver registrations for NVME Signed-off-by:
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James Smart authored
NVME Target: Receive buffer updates Allocates buffer pools and configures adapter interfaces to handle receive buffer (asynchronous FCP CMD ius, first burst data) from the adapter. Splits by protocol, etc. Signed-off-by:
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James Smart authored
NVME Target: Base modifications This set of patches adds the base modifications for NVME target support The base modifications consist of: - Additional module parameters or configuration tuning - Enablement of configuration mode for NVME target. Ties into the queueing model put into place by the initiator basemods patches. - Target-specific buffer pools, dma pools, sgl pools [mkp: fixed space at end of file] Signed-off-by:
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James Smart authored
NVME Initiator: Add debugfs support Adds debugfs snippets to cover the new NVME initiator functionality Signed-off-by:
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James Smart authored
NVME Initiator: Tie in to NVME Fabrics nvme_fc LLDD initiator api Adds the routines to: - register and deregister the FC port as a nvme-fc initiator localport - register and deregister remote FC ports as a nvme-fc remoteport - binding of nvme queues to adapter WQs - send/perform NVME LS's - send/perform NVME FCP initiator io operations Signed-off-by:
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James Smart authored
NVME Initiator: Merge into FC discovery Adds NVME PRLI support and Nameserver registrations and Queries for NVME Signed-off-by:
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James Smart authored
NVME Initiator: Base modifications This patch adds base modifications for NVME initiator support. The base modifications consist of: - Formal split of SLI3 rings from SLI-4 WQs (sometimes referred to as rings as well) as implementation now widely varies between the two. - Addition of configuration modes: SCSI initiator only; NVME initiator only; NVME target only; and SCSI and NVME initiator. The configuration mode drives overall adapter configuration, offloads enabled, and resource splits. NVME support is only available on SLI-4 devices and newer fw. - Implements the following based on configuration mode: - Exchange resources are split by protocol; Obviously, if only 1 mode, then no split occurs. Default is 50/50. module attribute allows tuning. - Pools and config parameters are separated per-protocol - Each protocol has it's own set of queues, but share interrupt vectors. SCSI: SLI3 devices have few queues and the original style of queue allocation remains. SLI4 devices piggy back on an "io-channel" concept that eventually needs to merge with scsi-mq/blk-mq support (it is underway). For now, the paradigm continues as it existed prior. io channel allocates N msix and N WQs (N=4 default) and either round robins or uses cpu # modulo N for scheduling. A bunch of module parameters allow the configuration to be tuned. NVME (initiator): Allocates an msix per cpu (or whatever pci_alloc_irq_vectors gets) Allocates a WQ per cpu, and maps the WQs to msix on a WQ # modulo msix vector count basis. Module parameters exist to cap/control the config if desired. - Each protocol has its own buffer and dma pools. I apologize for the size of the patch. Signed-off-by: -
James Smart authored
Create common wq, cq, eq, rq dump functions Signed-off-by:
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James Smart authored
Create common wq, cq, eq, rq print functions Signed-off-by:
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James Smart authored
This contains code cleanups that were in the prior patch set. This allows better review of real changes later. minor code cleanups: fix indentation, punctuation, line length addition/reduction of whitespace remove unneeded parens, braces lpfc_debugfs_nodelist_data: print as u64 rather than byte by byte covert printk(KERN_ERR to pr_err small print string deltas use num_present_cpus() rather than count them comment updates rctl/type names moved to module variable, not on stack Signed-off-by:
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