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2015-11-12Merge tag '4.4-scsi-mkp' into miscJames Bottomley1-1/+1
SCSI queue for 4.4. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-11be2iscsi: Fix bogus WARN_ON length checkTim Gardner1-1/+1
drivers/scsi/be2iscsi/be_main.c: In function 'be_sgl_create_contiguous': drivers/scsi/be2iscsi/be_main.c:3187:18: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses] WARN_ON(!length > 0); gcc version 5.2.1 Signed-off-by: Tim Gardner <tim.gardner@canonical.com> Cc: Jayamohan Kallickal <jayamohan.kallickal@avagotech.com> Cc: Minh Tran <minh.tran@avagotech.com> Cc: John Soni Jose <sony.john-n@avagotech.com> Cc: "James E.J. Bottomley" <JBottomley@odin.com> Reported-by: Joel Stanley <joel@jms.id.au> Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-11-09be2iscsi: Bump the driver versionJohn Soni Jose1-1/+1
Signed-off-by: John Soni Jose <sony.john@avagotech.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-11-09be2iscsi: Fix updating the next pointer during WRB postingJohn Soni Jose4-23/+75
While posting WRB the next_pointer of the current WRB should point to itself and the previous WRB next_pointer should point to the current WRB. The next pointer value was retrieved during alloc_pdu and was updated in wrb before ringing the doorbell. The fix retrieves the next_pointer just before ringing the doorbell and updates in the WRB. Signed-off-by: John Soni Jose <sony.john@avagotech.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-10-27be2iscsi: Revert ownership to EmulexKetan Mukadam10-22/+22
We would like to get the following updates in: Revert ownership to "Emulex" from "Avago Technologies" Signed-off-by: Ketan Mukadam <ketan.mukadam@avagotech.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-05-25be2iscsi : Bump the driver versionJohn Soni Jose1-1/+1
Bump the driver version [jejb: resolve conflict with 4627de9 MAINTAINERS, be2iscsi: change email domain] Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-05-25be2iscsi : Logout of FW Boot SessionJohn Soni Jose4-0/+87
Once be2iscsi driver is loaded and operational close Boot session established by FW. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-05-25be2iscsi : Fix memory check before unmapping.John Soni Jose1-3/+7
Check DMA memory before it is unmapped. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-05-25be2iscsi : Fix memory leak in the unload pathJohn Soni Jose1-6/+12
Driver was not freeing the DMA memory allocated for EQ/CQ in the unload path. This patch frees the DMA memory during the driver unload. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-05-25be2iscsi : Fix the PCI request region reserving.John Soni Jose1-4/+18
Reserve device PCI I/O and Memory resources. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-05-25be2iscsi : Fix the retry count for boot targetsJohn Soni Jose3-3/+28
Increment the retry count to get the boot target info when port async event is received by the driver. Update sysfs enteries with the boot target parameters. Signed-off-by: Minh Tran <minhduc.tran@emulex.com> Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-05-18MAINTAINERS, be2iscsi: change email domainMinh Tran9-36/+36
be2iscsi change of ownership from Emulex to Avago Technologies recently. We like to get the following updates in: changed "Emulex" to "Avago Technologies", changed email addresses from "emulex.com" to "avagotech.com", updated MAINTAINER list for be2iscsi driver. Signed-off-by: Minh Tran <minh.tran@avagotech.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@avagotech.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-04-14Merge branch 'for-linus' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial Pull trivial tree from Jiri Kosina: "Usual trivial tree updates. Nothing outstanding -- mostly printk() and comment fixes and unused identifier removals" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: goldfish: goldfish_tty_probe() is not using 'i' any more powerpc: Fix comment in smu.h qla2xxx: Fix printks in ql_log message lib: correct link to the original source for div64_u64 si2168, tda10071, m88ds3103: Fix firmware wording usb: storage: Fix printk in isd200_log_config() qla2xxx: Fix printk in qla25xx_setup_mode init/main: fix reset_device comment ipwireless: missing assignment goldfish: remove unreachable line of code coredump: Fix do_coredump() comment stacktrace.h: remove duplicate declaration task_struct smpboot.h: Remove unused function prototype treewide: Fix typo in printk messages treewide: Fix typo in printk messages mod_devicetable: fix comment for match_flags
2015-04-08be2iscsi: Fix kernel panic when device initialization failsJohn Soni Jose1-1/+1
Kernel panic was happening as iscsi_host_remove() was called on a host which was not yet added. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Cc: <stable@vger.kernel.org> Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-03-06treewide: Fix typo in printk messagesMasanari Iida1-1/+1
This patch fix spelling typo in printk messages. Signed-off-by: Masanari Iida <standby24x7@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2015-02-21Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds1-1/+0
Pull misc SCSI patches from James Bottomley: "This is a short patch set representing a couple of left overs from the merge window (debug removal and MAINTAINER changes). Plus one merge window regression (the local workqueue for hpsa) and a set of bug fixes for several issues (two for scsi-mq and the rest an assortment of long standing stuff, all cc'd to stable)" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: sg: fix EWOULDBLOCK errors with scsi-mq sg: fix unkillable I/O wait deadlock with scsi-mq sg: fix read() error reporting wd719x: add missing .module to wd719x_template hpsa: correct compiler warnings introduced by hpsa-add-local-workqueue patch fixed invalid assignment of 64bit mask to host dma_boundary for scatter gather segment boundary limit. fcoe: Transition maintainership to Vasu am53c974: remove left-over debugging code
2015-02-15fixed invalid assignment of 64bit mask to host dma_boundary for scatter ↵Minh Duc Tran1-1/+0
gather segment boundary limit. In reference to bug https://bugzilla.redhat.com/show_bug.cgi?id=1097141 Assert is seen with AMD cpu whenever calling pci_alloc_consistent. [ 29.406183] ------------[ cut here ]------------ [ 29.410505] kernel BUG at lib/iommu-helper.c:13! Signed-off-by: Minh Tran <minh.tran@emulex.com> Fixes: 6733b39a1301b0b020bbcbf3295852e93e624cb1 Cc: <stable@vger.kernel.org> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2015-02-13MODULE_DEVICE_TABLE: fix some callsitesAndrew Morton1-1/+0
The patch "module: fix types of device tables aliases" newly requires that invocations of MODULE_DEVICE_TABLE(type, name); come *after* the definition of `name'. That is reasonable, but some drivers weren't doing this. Fix them. Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Andrey Ryabinin <a.ryabinin@samsung.com> Cc: David Miller <davem@davemloft.net> Cc: Hans Verkuil <hverkuil@xs4all.nl> Acked-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-11-24scsi: drop reason argument from ->change_queue_depthChristoph Hellwig1-1/+1
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>
2014-11-24scsi: avoid ->change_queue_depth indirection for queue full trackingChristoph Hellwig1-1/+1
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>
2014-09-30be2iscsi: check ip buffer before copyingMike Christie1-5/+8
Dan Carpenter found a issue where be2iscsi would copy the ip from userspace to the driver buffer before checking the len of the data being copied: http://marc.info/?l=linux-scsi&m=140982651504251&w=2 This patch just has us only copy what we the driver buffer can support. Cc: <stable@vger.kernel.org> Tested-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30be2iscsi : Bump the driver versionJohn Soni Jose1-1/+1
Bump the driver version Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-30be2iscsi : Fix kernel panic during reboot/shutdownJohn Soni Jose1-1/+1
In the reboot/shutdown path, workqueue was destroyed after the adapter resource were freed. The task associated with workqueue was getting executed after resources were freed. This lead to kernel panic. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-16be2iscsi: Use pci_enable_msix_range()Alexander Gordeev1-3/+3
As result of deprecation of MSI-X/MSI enablement functions pci_enable_msix() and pci_enable_msi_block() all drivers using these two interfaces need to be updated to use the new pci_enable_msi_range() and pci_enable_msix_range() interfaces. Signed-off-by: Alexander Gordeev <agordeev@redhat.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Acked-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-16be2iscsi: Bump the driver versionJayamohan Kallickal1-1/+1
Bump the driver version Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-16be2iscsi: Fix processing CQE before connection resources are freedJayamohan Kallickal3-1/+46
Driver should process the completion queue entries before a connection resources are freed. While running mixed traffic due to latency, driver processes the CQE after the connection resources are freed. This fix processes all the completion queue before the connection resources are freed. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-16be2iscsi: Fix updating the boot enteries in sysfsJayamohan Kallickal4-2/+62
During port async event driver should check if there is any boot target configured on the adapter. Update sysfs enteries with the boot target parameters. Signed-off-by: Minh Tran <minhduc.tran@emulex.com> Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-16be2iscsi: Fix the copyright yearJayamohan Kallickal9-9/+9
Change the copyright year to 2014 Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-09-16be2iscsi: Fix the sparse warning introduced in previous submissionJayamohan Kallickal1-7/+7
commit 73af08e11c6638e2abd6b1fa13cdab58c2bbdbf8 Author: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Date: Mon May 5 21:41:26 2014 -0400 be2iscsi: Fix interrupt Coalescing mechanism. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-08-12PCI: Remove DEFINE_PCI_DEVICE_TABLE macro useBenoit Taine1-1/+1
We should prefer `struct pci_device_id` over `DEFINE_PCI_DEVICE_TABLE` to meet kernel coding style guidelines. This issue was reported by checkpatch. A simplified version of the semantic patch that makes this change is as follows (http://coccinelle.lip6.fr/): // <smpl> @@ identifier i; declarer name DEFINE_PCI_DEVICE_TABLE; initializer z; @@ - DEFINE_PCI_DEVICE_TABLE(i) + const struct pci_device_id i[] = z; // </smpl> [bhelgaas: add semantic patch] Signed-off-by: Benoit Taine <benoit.taine@lip6.fr> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
2014-08-08scsi: use pci_zalloc_consistentJoe Perches2-8/+5
Remove the now unnecessary memset too. Signed-off-by: Joe Perches <joe@perches.com> Cc: Adam Radford <linuxraid@lsi.com> Cc: "James E.J. Bottomley" <JBottomley@parallels.com> Cc: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Cc: Dario Ballabio <ballabio_dario@emc.com> Cc: Michael Neuffer <mike@i-Connect.Net> Cc: "Stephen M. Cameron" <scameron@beardog.cce.hp.com> Cc: Neela Syam Kolli <megaraidlinux@lsi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2014-07-25be2iscsi: Fix memory leak in mgmt_set_ip()Maurizio Lombardi1-9/+11
The if_info pointer is not released by the mgmt_set_ip() function Signed-off-by: Maurizio Lombardi <mlombard@redhat.com> Reviewed-by: Tomas Henzl <thenzl@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-07-25bnx2i, be2iscsi: fix custom stats lengthMike Christie1-1/+1
The custom stats is an array with custom_length indicating the length of the array. This patch fixes bnx2i and be2iscsi's setting of the custom stats length. They both just have the one, eh_abort_cnt, so that should be in the first entry of the custom array and custom_length should then be one. Reported-by: Rickard Strandqvist <rickard_strandqvist@spectrumdigital.se> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com> Acked-by: Eddie Wai <eddie.wai@broadcom.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-25be2iscsi: remove potential junk pointer freeTomas Henzl1-3/+1
commit 0e7c60c [SCSI] be2iscsi: fix memory leak in error path fixed an potential junk pointer free if mgmt_get_if_info() returned an error fix it on one more place Signed-off-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-25be2iscsi: add an missing goto in error pathTomas Henzl1-0/+2
a jump to 'free_memory' is apparently missing Signed-off-by: Tomas Henzl <thenzl@redhat.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-06-02Revert "be2iscsi: Fix processing cqe for cxn whose endpoint is freed"Christoph Hellwig1-11/+0
This reverts commit 11206081ad895d83e717bfe23603168dc307d904. Based on comments from Mike Christie and Sony John-N.
2014-05-28be2iscsi: Bump the driver versionJayamohan Kallickal1-1/+1
Bumping the driver version. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-28be2iscsi: Fix processing cqe for cxn whose endpoint is freedJayamohan Kallickal1-0/+11
During heavy IO in multipath environment with many active sessions and port-bouncing happening, there is a race condition because of which beiscsi_prcess_cqe() gets called for a connection whose endpoint is freed. Checking endpoint reference for a connection before processing in beiscsi_process_cq(). Signed-off-by: Minh Tran <minhduc.tran@emulex.com> Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-28be2iscsi: Fix destroy MCC-CQ before MCC-EQ is destroyedJayamohan Kallickal1-5/+6
EQ teardown should happen only after all CQ are destroyed. In some FW config, adapter goes into a freeze state. This fix moves teardown of MCC-Q before the EQ teardown happens. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-28be2iscsi: Fix memory corruption in MBX pathJayamohan Kallickal1-1/+1
From: Dan Carpenter [mailto:dan.carpenter@oracle.com] Sent: Friday, March 28, 2014 1:42 AM Subject: re: [SCSI] be2iscsi: Fix handling timed out MBX completion from FW Hello Jayamohan Kallickal, The patch 1957aa7f6246: "[SCSI] be2iscsi: Fix handling timed out MBX completion from FW" from Jan 29, 2014, leads to the following static checker warning: drivers/scsi/be2iscsi/be_main.c:5581 beiscsi_dev_probe() error: memset() '&phba->ctrl.ptag_state[i]->tag_mem_state' too small (24 vs 32) drivers/scsi/be2iscsi/be_main.c 5576 for (i = 0; i < MAX_MCC_CMD; i++) { 5577 init_waitqueue_head(&phba->ctrl.mcc_wait[i + 1]); 5578 phba->ctrl.mcc_tag[i] = i + 1; 5579 phba->ctrl.mcc_numtag[i + 1] = 0; 5580 phba->ctrl.mcc_tag_available++; 5581 memset(&phba->ctrl.ptag_state[i].tag_mem_state, 0, 5582 sizeof(struct beiscsi_mcc_tag_state)); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Probably this this be change to sizeof(struct be_dma_mem struct)? It looks like we are corrupting memory a bit here. 5583 } regards, dan carpenter Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-28be2iscsi: Fix TCP parameters while connection offloading.Jayamohan Kallickal3-6/+40
SKH-R adapter, TCP Window Size/Scale parameters are passed in TCP Connection Offload Mbx Command. Signed-off-by: Minh Tran <minhduc.tran@emulex.com> Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-28be2iscsi: Fix interrupt Coalescing mechanism.Jayamohan Kallickal6-5/+118
Signed-off-by: Minh Tran <minhduc.tran@emulex.com> Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-28be2iscsi: Fix exposing Host in sysfs after adapter initialization is completeJayamohan Kallickal1-8/+3
Before probe for function was completed, iSCSI Daemon had initiated login to target while OS was coming up. The targets which had node.startup=automatic, login process was initiated.Since function specific initialization was still in progress this lead to kernel panic. Fixed the issue by moving iscsi_host_add() call after adapter initialization is done. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-05-28be2iscsi: Fix retrieving MCCQ_WRB in non-embedded Mbox pathJayamohan Kallickal1-7/+7
Getting WRB for MCCQ posting was done before looking if tag is available or not. This lead to increase phba->ctrl.mcc_obj.q.used variable and the WARN_ON message was coming from wrb_from_mccq(). Moved getting wrb from mccq after checking for the tag. In wrb_from_mccq(), memset is done before returning wrb ptr. Removed memset of mccq wrb from all other functions. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
2014-04-01Merge branch 'for-3.15/core' of git://git.kernel.dk/linux-blockLinus Torvalds1-143/+63
Pull core block layer updates from Jens Axboe: "This is the pull request for the core block IO bits for the 3.15 kernel. It's a smaller round this time, it contains: - Various little blk-mq fixes and additions from Christoph and myself. - Cleanup of the IPI usage from the block layer, and associated helper code. From Frederic Weisbecker and Jan Kara. - Duplicate code cleanup in bio-integrity from Gu Zheng. This will give you a merge conflict, but that should be easy to resolve. - blk-mq notify spinlock fix for RT from Mike Galbraith. - A blktrace partial accounting bug fix from Roman Pen. - Missing REQ_SYNC detection fix for blk-mq from Shaohua Li" * 'for-3.15/core' of git://git.kernel.dk/linux-block: (25 commits) blk-mq: add REQ_SYNC early rt,blk,mq: Make blk_mq_cpu_notify_lock a raw spinlock blk-mq: support partial I/O completions blk-mq: merge blk_mq_insert_request and blk_mq_run_request blk-mq: remove blk_mq_alloc_rq blk-mq: don't dump CPU -> hw queue map on driver load blk-mq: fix wrong usage of hctx->state vs hctx->flags blk-mq: allow blk_mq_init_commands() to return failure block: remove old blk_iopoll_enabled variable blktrace: fix accounting of partially completed requests smp: Rename __smp_call_function_single() to smp_call_function_single_async() smp: Remove wait argument from __smp_call_function_single() watchdog: Simplify a little the IPI call smp: Move __smp_call_function_single() below its safe version smp: Consolidate the various smp_call_function_single() declensions smp: Teach __smp_call_function_single() to check for offline cpus smp: Remove unused list_head from csd smp: Iterate functions through llist_for_each_entry_safe() block: Stop abusing rq->csd.list in blk-softirq block: Remove useless IPI struct initialization ...
2014-03-15[SCSI] libiscsi: Reduce locking contention in fast pathShlomo Pongratz1-13/+13
Replace the session lock with two locks, a forward lock and a backwards lock named frwd_lock and back_lock respectively. The forward lock protects resources that change while sending a request to the target, such as cmdsn, queued_cmdsn, and allocating task from the commands' pool with kfifo_out. The backward lock protects resources that change while processing a response or in error path, such as cmdsn_exp, cmdsn_max, and returning tasks to the commands' pool with kfifo_in. Under a steady state fast-path situation, that is when one or more processes/threads submit IO to an iscsi device and a single kernel upcall (e.g softirq) is dealing with processing of responses without errors, this patch eliminates the contention between the queuecommand()/request response/scsi_done() flows associated with iscsi sessions. Between the forward and the backward locks exists a strict locking hierarchy. The mutual exclusion zone protected by the forward lock can enclose the mutual exclusion zone protected by the backward lock but not vice versa. For example, in iscsi_conn_teardown or in iscsi_xmit_data when there is a failure and __iscsi_put_task is called, the backward lock is taken while the forward lock is still taken. On the other hand, if in the RX path a nop is to be sent, for example in iscsi_handle_reject or __iscsi_complete_pdu than the forward lock is released and the backward lock is taken for the duration of iscsi_send_nopout, later the backward lock is released and the forward lock is retaken. libiscsi_tcp uses two kernel fifos the r2t pool and the r2t queue. The insertion and deletion from these queues didn't corespond to the assumption taken by the new forward/backwards session locking paradigm. That is, in iscsi_tcp_clenup_task which belongs to the RX (backwards) path, r2t is taken out from r2t queue and inserted to the r2t pool. In iscsi_tcp_get_curr_r2t which belong to the TX (forward) path, r2t is also inserted to the r2t pool and another r2t is pulled from r2t queue. Only in iscsi_tcp_r2t_rsp which is called in the RX path but can requeue to the TX path, r2t is taken from the r2t pool and inserted to the r2t queue. In order to cope with this situation, two spin locks were added, pool2queue and queue2pool. The former protects extracting from the r2t pool and inserting to the r2t queue, and the later protects the extracing from the r2t queue and inserting to the r2t pool. Signed-off-by: Shlomo Pongratz <shlomop@mellanox.com> Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com> [minor fix up to apply cleanly and compile fix] Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2014-03-15[SCSI] be2iscsi : Bump the driver versionJayamohan Kallickal1-1/+1
Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2014-03-15[SCSI] be2iscsi : Fix DMA Out of SW-IOMMU space errorJayamohan Kallickal1-2/+13
Setting DMA bit mask 64 and roll back to 32 if not supported. Signed-off-by: Minh Tran <minhduc.tran@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2014-03-15[SCSI] be2iscsi: Fix scsi_cmnd leakage in driver.Jayamohan Kallickal1-1/+9
scsi_cmnd n io_task was not NULL when - Link goes down while IO was happening and session is closed. - Task for which TMF was sent. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2014-03-15[SCSI] be2iscsi: Fix the session cleanup when reboot/shutdown happensJayamohan Kallickal6-1/+26
In iSCSI Boot scenario, when machine is reboot/shutdown phase the active sessions are not closed. Driver queue cleanup is done as part of unload and device is disabled. Sessions are still active, iSCSI commands are issued from session which comes to driver, as driver cleanup and device disabled there is kernel stack dump with errors. Fix is invoking iscsi_session_failure with ISCSI_ERR_INVALID_HOST on all the active sessions when shutdown routine is called. Signed-off-by: John Soni Jose <sony.john-n@emulex.com> Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com> Reviewed-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <JBottomley@Parallels.com>