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* move asm/unaligned.h to linux/unaligned.hAl Viro2024-10-021-1/+1
| | | | | | | | | | | | | | | | | | | asm/unaligned.h is always an include of asm-generic/unaligned.h; might as well move that thing to linux/unaligned.h and include that - there's nothing arch-specific in that header. auto-generated by the following: for i in `git grep -l -w asm/unaligned.h`; do sed -i -e "s/asm\/unaligned.h/linux\/unaligned.h/" $i done for i in `git grep -l -w asm-generic/unaligned.h`; do sed -i -e "s/asm-generic\/unaligned.h/linux\/unaligned.h/" $i done git mv include/asm-generic/unaligned.h include/linux/unaligned.h git mv tools/include/asm-generic/unaligned.h tools/include/linux/unaligned.h sed -i -e "/unaligned.h/d" include/asm-generic/Kbuild sed -i -e "s/__ASM_GENERIC/__LINUX/" include/linux/unaligned.h tools/include/linux/unaligned.h
* scsi: scsi_transport_fc: Simplify alloc_workqueue() invocationsBart Van Assche2024-08-231-6/+0
| | | | | | | | | Let alloc_workqueue() format the workqueue name instead of calling snprintf() explicitly. Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20240822195944.654691-16-bvanassche@acm.org Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* Merge patch series "convert SCSI to atomic queue limits, part 1 (v3)"Martin K. Petersen2024-04-121-0/+1
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Christoph Hellwig <hch@lst.de> says: Hi all, this series converts the SCSI midlayer and LLDDs to use atomic queue limits API. It is pretty straight forward, except for the mpt3mr driver which does really weird and probably already broken things by setting limits from unlocked device iteration callbacks. I will probably defer the (more complicated) ULD changes to the next merge window as they would heavily conflict with Damien's zone write plugging series. With that the series could go in through the SCSI tree if Jens' ACKs the core block layer bits. Link: https://lore.kernel.org/r/20240409143748.980206-1-hch@lst.de Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
| * scsi: scsi_transport_fc: Add a max_bsg_segments field to struct ↵Christoph Hellwig2024-04-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | fc_function_template ibmvfc only supports a single segment for BSG FC passthrough. Instead of having it set a queue limits after creating the BSG queues, add a field so that the FC transport can set it before allocating the queue. Signed-off-by: Christoph Hellwig <hch@lst.de> Link: https://lore.kernel.org/r/20240409143748.980206-6-hch@lst.de Reviewed-by: Damien Le Moal <dlemoal@kernel.org> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* | scsi: scsi_transport_fc: Add kernel-doc for function returnRandy Dunlap2024-04-091-3/+2
|/ | | | | | | | | | Add function return value to prevent a kernel-doc warning: scsi_transport_fc.h:780: warning: No description found for return value of 'fc_remote_port_chkready' Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20240408025425.18778-8-rdunlap@infradead.org Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: scsi_transport_fc: Add an additional flag to fc_host_fpin_rcv()Muneendra2023-02-221-1/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | The LLDD and the stack currently process FPINs received from the fabric, but the stack is not aware of any action taken by the driver to alleviate congestion. The current interface between the driver and the SCSI stack is limited to passing the notification mainly for statistics and heuristics. The reaction to an FPIN could be handled either by the driver or by the stack (marginal path and failover). Amend the interface to indicate if action on an FPIN has already been reacted to by the LLDDs or not. Add an additional flag to fc_host_fpin_rcv() to indicate if the FPIN has been acknowledged/reacted to by the driver. Also added a new event code FCH_EVT_LINK_FPIN_ACK to notify to the user that the event has been acknowledged/reacted by the LLDD driver Link: https://lore.kernel.org/r/20230209034326.882514-1-muneendra.kumar@broadcom.com Co-developed-by: Anil Gurumurthy <agurumurthy@marvell.com> Signed-off-by: Anil Gurumurthy <agurumurthy@marvell.com> Co-developed-by: Nilesh Javali <njavali@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Signed-off-by: Muneendra <muneendra.kumar@broadcom.com> Reviewed-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: core: Change the return type of .eh_timed_out()Bart Van Assche2022-10-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 6600593cbd93 ("block: rename BLK_EH_NOT_HANDLED to BLK_EH_DONE") made it impossible for .eh_timed_out() implementations to call scsi_done() without causing a crash. Restore support for SCSI timeout handlers to call scsi_done() as follows: * Change all .eh_timed_out() handlers as follows: - Change the return type into enum scsi_timeout_action. - Change BLK_EH_RESET_TIMER into SCSI_EH_RESET_TIMER. - Change BLK_EH_DONE into SCSI_EH_NOT_HANDLED. * In scsi_timeout(), convert the SCSI_EH_* values into BLK_EH_* values. Reviewed-by: Lee Duncan <lduncan@suse.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Ming Lei <ming.lei@redhat.com> Cc: John Garry <john.garry@huawei.com> Cc: Mike Christie <michael.christie@oracle.com> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Link: https://lore.kernel.org/r/20221018202958.1902564-3-bvanassche@acm.org Reviewed-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: libfc: Add FDMI-2 attributesJaved Hasan2021-06-101-1/+24
| | | | | | | | | | | | Add all attributes for RHBA and RPA registration. Fallback mechanism is added between RBHA V2 and RHBA V1 attributes. In case RHBA get fails for V2 attributes we fall back to V1 attribute registration. Link: https://lore.kernel.org/r/20210603121623.10084-4-jhasan@marvell.com Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: scsi_transport_fc: Add a new rport state FC_PORTSTATE_MARGINALMuneendra Kumar2021-01-151-1/+3
| | | | | | | | | | | | | | | | | Add a new interface, fc_eh_should_retry_cmd(), which checks if the cmd should be retried or not by checking the rport state. If the rport state is marginal it returns false to make sure there won't be any retries on the cmd. Make the fc_remote_port_delete(), fc_user_scan_tgt(), and fc_timeout_deleted_rport() functions handle the new rport state. Link: https://lore.kernel.org/r/1609969748-17684-4-git-send-email-muneendra.kumar@broadcom.com Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Muneendra Kumar <muneendra.kumar@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: fc: Add mechanism to update FPIN signal statisticsShyam Sundar2020-10-261-0/+3
| | | | | | | | | | | | Under fc_host_statistics add statistics for Congestion Signals that are delivered to the host as interrupt signals. Link: https://lore.kernel.org/r/20201021092715.22669-5-njavali@marvell.com Reviewed-by: James Smart <james.smart@broadcom.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Shyam Sundar <ssundar@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: fc: Parse FPIN packets and update statisticsShyam Sundar2020-10-261-0/+1
| | | | | | | | | | | | Parse the incoming FPIN packets and update the host and rport FPIN statistics based on the FPINs. Link: https://lore.kernel.org/r/20201021092715.22669-4-njavali@marvell.com Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Reviewed-by: James Smart <james.smart@broadcom.com> Signed-off-by: Shyam Sundar <ssundar@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: fc: Add FPIN statistics to fc_host and fc_rport objectsShyam Sundar2020-10-261-0/+32
| | | | | | | | | | | | | | | Add a structure for holding FPIN statistics, for host & rport respectively, and add associated sysfs nodes: /sys/class/fc_host/hostXX/statistics/ /sys/class/fc_remote_ports/rport-XX\:Y-Z/statistics/ Link: https://lore.kernel.org/r/20201021092715.22669-3-njavali@marvell.com Reviewed-by: James Smart <james.smart@broadcom.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Shyam Sundar <ssundar@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: fc: Add 256GBit speed setting to SCSI FC transportJames Smart2020-09-031-0/+1
| | | | | | | | | | Add 256GBit speed setting to the SCSI FC transport. This speed can be reached via FC trunking techniques. Link: https://lore.kernel.org/r/20200831213518.48409-1-james.smart@broadcom.com Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds2019-07-121-3/+0
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull SCSI updates from James Bottomley: "This is mostly update of the usual drivers: qla2xxx, hpsa, lpfc, ufs, mpt3sas, ibmvscsi, megaraid_sas, bnx2fc and hisi_sas as well as the removal of the osst driver (I heard from Willem privately that he would like the driver removed because all his test hardware has failed). Plus number of minor changes, spelling fixes and other trivia. The big merge conflict this time around is the SPDX licence tags. Following discussion on linux-next, we believe our version to be more accurate than the one in the tree, so the resolution is to take our version for all the SPDX conflicts" Note on the SPDX license tag conversion conflicts: the SCSI tree had done its own SPDX conversion, which in some cases conflicted with the treewide ones done by Thomas & co. In almost all cases, the conflicts were purely syntactic: the SCSI tree used the old-style SPDX tags ("GPL-2.0" and "GPL-2.0+") while the treewide conversion had used the new-style ones ("GPL-2.0-only" and "GPL-2.0-or-later"). In these cases I picked the new-style one. In a few cases, the SPDX conversion was actually different, though. As explained by James above, and in more detail in a pre-pull-request thread: "The other problem is actually substantive: In the libsas code Luben Tuikov originally specified gpl 2.0 only by dint of stating: * This file is licensed under GPLv2. In all the libsas files, but then muddied the water by quoting GPLv2 verbatim (which includes the or later than language). So for these files Christoph did the conversion to v2 only SPDX tags and Thomas converted to v2 or later tags" So in those cases, where the spdx tag substantially mattered, I took the SCSI tree conversion of it, but then also took the opportunity to turn the old-style "GPL-2.0" into a new-style "GPL-2.0-only" tag. Similarly, when there were whitespace differences or other differences to the comments around the copyright notices, I took the version from the SCSI tree as being the more specific conversion. Finally, in the spdx conversions that had no conflicts (because the treewide ones hadn't been done for those files), I just took the SCSI tree version as-is, even if it was old-style. The old-style conversions are perfectly valid, even if the "-only" and "-or-later" versions are perhaps more descriptive. * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (185 commits) scsi: qla2xxx: move IO flush to the front of NVME rport unregistration scsi: qla2xxx: Fix NVME cmd and LS cmd timeout race condition scsi: qla2xxx: on session delete, return nvme cmd scsi: qla2xxx: Fix kernel crash after disconnecting NVMe devices scsi: megaraid_sas: Update driver version to 07.710.06.00-rc1 scsi: megaraid_sas: Introduce various Aero performance modes scsi: megaraid_sas: Use high IOPS queues based on IO workload scsi: megaraid_sas: Set affinity for high IOPS reply queues scsi: megaraid_sas: Enable coalescing for high IOPS queues scsi: megaraid_sas: Add support for High IOPS queues scsi: megaraid_sas: Add support for MPI toolbox commands scsi: megaraid_sas: Offload Aero RAID5/6 division calculations to driver scsi: megaraid_sas: RAID1 PCI bandwidth limit algorithm is applicable for only Ventura scsi: megaraid_sas: megaraid_sas: Add check for count returned by HOST_DEVICE_LIST DCMD scsi: megaraid_sas: Handle sequence JBOD map failure at driver level scsi: megaraid_sas: Don't send FPIO to RL Bypass queue scsi: megaraid_sas: In probe context, retry IOC INIT once if firmware is in fault scsi: megaraid_sas: Release Mutex lock before OCR in case of DCMD timeout scsi: megaraid_sas: Call disable_irq from process IRQ poll scsi: megaraid_sas: Remove few debug counters from IO path ...
| * scsi: scsi_transport_fc: switch to SPDX tagsChristoph Hellwig2019-05-211-17/+1
| | | | | | | | | | | | | | | | Use the the GPLv2+ SPDX tag instead of verbose boilerplate text. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* | treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156Thomas Gleixner2019-05-301-15/+1
|/ | | | | | | | | | | | | | | | | | | | | | | | | | | | Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
* scsi: scsi_transport_fc: nvme: display FC-NVMe port rolesHannes Reinecke2019-04-131-0/+3
| | | | | | | | | | | | | | | Currently the FC-NVMe driver is leverating the SCSI FC transport class to access the remote ports. Which means that all FC-NVMe remote ports will be visible to the fc transport layer, but due to missing definitions the port roles will always be 'unknown'. This patch adds the missing definitions to the fc transport class to that the port roles are correctly displayed. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: James Smart <james.smart@broadcom.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Reviewed-by: Giridhar Malavali <gmalavali@marvell.com> Reviewed-by: Himanshu Madhani <hmadhani@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: scsi_transport_fc: Declare wwn_to_u64() argument constBart Van Assche2019-04-091-1/+1
| | | | | | | | | | | | | Since the wwn_to_u64() function does not change its input, make its argument const. Cc: James Smart <james.smart@broadcom.com> Cc: Hannes Reinecke <hare@suse.com> Cc: Johannes Thumshirn <jthumshirn@suse.de> Cc: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: scsi_transport_fc: Add FPIN fc event codesJames Smart2019-04-091-0/+2
| | | | | | | | | | | | | Add a new event type - an FPIN event. Add a new routine, fc_host_fpin_rcv(), that lldd's call when an FPIN is received. The routine processes the fpin payload. For now, the routine only logs an FPIN event. Signed-off-by: Muneendra <muneendra.kumar@broadcom.com> Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: scsi_transport_fc: refactor event posting routinesJames Smart2019-04-091-3/+8
| | | | | | | | | | | | | | | There are two routines generating transport events that do the same thing with only a couple of values set differently. Refactor so there's a single routine doing the netlink operations to send the event. All the differences are passed as arguments. Export the symbol so the generic routine can be called by llds. Modify the existing two event routines to use the helper. Signed-off-by: James Smart <jsmart2021@gmail.com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: scsi_transport_fc: fix typos on 64/128 GBit define namesJames Smart2018-01-041-2/+2
| | | | | | | | | The define names specified 64Bit/128Bit, not 64GBIT/128GBIT. Correct the names. Signed-off-by: James Smart <james.smart@broadcom.com> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: scsi_transport_fc: add 64GBIT and 128GBIT port speed definitionsJames Smart2017-11-091-0/+2
| | | | | | | | | Add 64GBIT and 128GBIT port speed definitions. Upcoming hardware will reference these speeds. Signed-off-by: James Smart <james.smart@broadcom.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: fc: start decoupling fc_block_scsi_eh from scsi_cmndSteffen Maier2017-08-071-0/+1
| | | | | | | | | | | | | | | Scsi_cmnd is an unsuitable argument for eh_device_reset_handler(), eh_target_reset_handler(), and eh_host_reset_handler() which do not have the scope of one single SCSI command. These callbacks tend to use fc_block_scsi_eh() requiring scsi_cmnd. In order to start decoupling above eh callbacks from scsi_cmnd, introduce a new variant of the function called fc_block_rport() taking an fc_rport as argument. Refactor the old fc_block_scsi_eh() to simply delegate to fc_block_rport(). Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com> Reviewed-by: Hannes Reinecke <hare@suse.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: fc: drop residual tsk_mgmt_response and it_nexus_responseKefeng Wang2017-06-261-4/+0
| | | | | | | | | | After commit 556e26a70b64 ("scsi: remove tsk_mgmt_response and it_nexus_response transport methods"), the target driver support was removed totally. Drop the residual. Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com> Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: scsi_transport_fc: Add dummy initiator role to rportCathy Avery2017-04-201-0/+1
| | | | | | | | | | | | | | This patch allows scsi drivers that expose virturalized fibre channel devices but that do not expose rports to successfully rescan the scsi bus via echo "- - -" > /sys/class/scsi_host/hostX/scan. Drivers can create a pseudo rport and indicate FC_PORT_ROLE_FCP_DUMMY_INITIATOR as the rport's role in fc_rport_identifiers. This insures that a valid scsi_target_id is assigned to the newly created rport and it can meet the requirements of fc_user_scan_tgt calling scsi_scan_target. Signed-off-by: Cathy Avery <cavery@redhat.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: remove eh_timed_out methods in the transport templateChristoph Hellwig2017-02-071-0/+1
| | | | | | | | | | | | | Instead define the timeout behavior purely based on the host_template eh_timed_out method and wire up the existing transport implementations in the host templates. This also clears up the confusion that the transport template method overrides the host template one, so some drivers have to re-override the transport template one. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: fc: use bsg_job_doneJohannes Thumshirn2016-11-181-2/+0
| | | | | | | | | | fc_bsg_jobdone() and bsg_job_done() are 1:1 copies now so use the bsg-lib one instead of the FC private implementation. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Acked-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: change FC drivers to use 'struct bsg_job'Johannes Thumshirn2016-11-181-45/+18
| | | | | | | | | | | Change FC drivers to use 'struct bsg_job' from bsg-lib.h instead of 'struct fc_bsg_job' from scsi_transport_fc.h and remove 'struct fc_bsg_job'. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Acked-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: fc: implement kref backed reference countingJohannes Thumshirn2016-11-181-3/+1
| | | | | | | | | | | | | Implement kref backed reference counting instead of rolling our own. This elimnates the need of the following fields in 'struct fc_bsg_job': * ref_cnt * state_flags * job_lock bringing us close to unification of 'struct fc_bsg_job' and 'struct bsg_job'. 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>
* scsi: fc: provide fc_bsg_to_rport() helperJohannes Thumshirn2016-11-181-0/+5
| | | | | | | | | | | Provide fc_bsg_to_rport() helper that will become handy when we're moving from struct fc_bsg_job to a plain struct bsg_job. Also move all LLDDs to use the new helper. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Acked-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: fc: provide fc_bsg_to_shost() helperJohannes Thumshirn2016-11-181-0/+5
| | | | | | | | | | | Provide fc_bsg_to_shost() helper that will become handy when we're moving from struct fc_bsg_job to a plain struct bsg_job. Also use this little helper in the LLDDs. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Acked-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: fc: Export fc_bsg_jobdone and use it in FC driversJohannes Thumshirn2016-11-181-1/+2
| | | | | | | | | | | | | | | | Export fc_bsg_jobdone so drivers can use it directly instead of doing the round-trip via struct fc_bsg_job::job_done() and use it in the LLDDs. That way we can also unify the interfaces of fc_bsg_jobdone and bsg_job_done. As we've converted all LLDDs over to use fc_bsg_jobdone() directly, we can remove the function pointer from struct fc_bsg_job as well. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: Get rid of struct fc_bsg_bufferJohannes Thumshirn2016-11-181-9/+3
| | | | | | | | | | struct fc_bsg_buffer is just a clone of struct bsg_buffer from bsg-lib, so use this one instead. Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by: Hannes Reinecke <hare@suse.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi: fc: use get/put_unaligned64 for wwn accessArnd Bergmann2016-03-181-12/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A bug in the gcc-6.0 prerelease version caused at least one driver (lpfc) to have excessive stack usage when dealing with wwn data, on the ARM architecture. lpfc_scsi.c: In function 'lpfc_find_next_oas_lun': lpfc_scsi.c:117:1: warning: the frame size of 1152 bytes is larger than 1024 bytes [-Wframe-larger-than=] I have reported this as a gcc regression in https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70232 However, using a better implementation of wwn_to_u64() not only helps with the particular gcc problem but also leads to better object code for any version or architecture. The kernel already provides get_unaligned_be64() and put_unaligned_be64() helper functions that provide an optimized implementation with the desired semantics. The lpfc_find_next_oas_lun() function in the example that grew from 1146 bytes to 5144 bytes when moving from gcc-5.3 to gcc-6.0 is now 804 bytes, as the optimized get_unaligned_be64() load can be done in three instructions. The stack usage is now down to 28 bytes from 128 bytes with gcc-5.3 before. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Reviewed-by: Hannes Reinicke <hare@suse.de> Reviewed-by: Ewan Milne <emilne@redhat.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
* scsi_transport_fc: Add support for 25Gbit speedJames Smart2015-04-101-0/+1
| | | | | | | Signed-off-by: James Smart <james.smart@emulex.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: James Bottomley <JBottomley@Odin.com>
* scsi: add defines for new FC port speeds.Dick Kennedy2014-07-251-0/+4
| | | | | | | | These speeds are to support the next generation of FCoE port speeds. Signed-off-by: Dick Kennedy <Dick.Kennedy@Emulex.Com> Reviewed-by: Ewan D. Milne <emilne@redhat.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
* [SCSI] scsi_transport_fc: Add 32Gbps speed definition.Chad Dupuis2014-03-151-0/+1
| | | | | | Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com> Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] fc: add some more FC specific stats to fc_hostVasu Dev2012-07-201-0/+12
| | | | | | | | | | | | | | | | | | | | The libfc provides more flexibility and with that we can monitor some more FC specific stats for FC exches or FCP error cases, this patch add such new FC stats. The patch adds *only* FC specific new stats to existing fc_host attribute container. Added stats names are self explanatory as existing FC stats already has, however anyway still added commentary along their definition to describe them. Signed-off-by: Vasu Dev <vasu.dev@intel.com> Acked-by : Robert Love <robert.w.love@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] scsi_transport_fc: Getting FC Port Speed in sync with FC-GSNeerav Parikh2012-02-191-2/+2
| | | | | | | | | | | | | | | The values for the 4G and 10G speeds are not in sync with definitions in SM-HBA/FC-GS-x/etc. This patch brings them in sync to these specifications. The values are converted to strings when represented via sysfs attribute, hence that should cover for user space apps as they may not see any change. Signed-off-by: Neerav Parikh <neerav.parikh@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Acked-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* [SCSI] scsi_transport_fc: Add FDMI host attributesNeerav Parikh2012-02-191-0/+28
| | | | | | | | | | | | | This adds FC-GS Fabric Device Management Interface (FDMI) related attributes to fc_host_attr structure. This is in preparation for allowing FDMI attributes to be registered via libfc. Signed-off-by: Neerav Parikh <neerav.parikh@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Acked-by: Robert Love <robert.w.love@intel.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
* Fix common misspellingsLucas De Marchi2011-03-311-3/+3
| | | | | | Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
* [SCSI] fc class: add fc host dev loss sysfs fileMike Christie2010-10-081-4/+3
| | | | | | | | | | | This adds a fc host dev loss sysfs file. Instead of calling into the driver using the get_host_def_dev_loss_tmo callback, we allow drivers to init the dev loss like is done for other fc host params, and then the fc class will handle updating the value if the user writes to the new sysfs file. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] fc class: add fc host default default dev loss settingMike Christie2010-09-051-0/+4
| | | | | | | | | | | This patch adds a fc_host setting to store the default dev_loss_tmo. It is used if the driver has a callack to get the value from the LLD. If the callback is not set, then we use the fc class module default value. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] Allow FC LLD to fast-fail scsi eh by introducing new eh returnChristof Schmitt2010-04-111-1/+1
| | | | | | | | | | | | | | | | | | | | | | | If the scsi eh is running and then a FC LLD calls fc_remote_port_delete, the SCSI commands sent from the eh will fail. To prevent this, a FC LLD can call fc_block_scsi_eh from the eh callback, blocking the eh thread until the dev_loss_tmo fires or the remote port is available again. If (e.g. for a multipathing setup) the dev_loss_tmo is set to a very large value, thus preventing the scsi device removal , the scsi eh can block for a long time. For multipathing, the fast_io_fail_tmo is then set to a low value to detect path problems sooner. This patch introduces a new return code FAST_IO_FAIL. The function fc_block_scsi_eh now returns FAST_IO_FAIL when the fast_io_fail_tmo fires. This indicates that the LLD terminated all pending I/O requests and there are no more pending SCSI commands for the scsi eh to wait for. This return code can be passed back to the scsi eh to stop the escalation and finish the recovery process for this device. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] scsi_transport_fc: Introduce helper function for blocking scsi_ehChristof Schmitt2009-12-041-0/+1
| | | | | | | | | | Move the duplicated code from FC LLDs to SCSI FC transport class. Acked-by: James Smart <james.smart@emulex.com> Acked-by: Giridhar Malavali <giridhar.malavali@qlogic.com> Acked-by: Abhijeet Joglekar <abjoglek@cisco.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
* [SCSI] FC Pass Thru supportJames Smart2009-06-121-2/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Attached is the ELS/CT pass-thru patch for the FC Transport. The patch creates a generic framework that lays on top of bsg and the SGIO v4 ioctl in order to pass transaction requests to LLDD's. The interface supports the following operations: On an fc_host basis: Request login to the specified N_Port_ID, creating an fc_rport. Request logout of the specified N_Port_ID, deleting an fc_rport Send ELS request to specified N_Port_ID w/o requiring a login, and wait for ELS response. Send CT request to specified N_Port_ID and wait for CT response. Login is required, but LLDD is allowed to manage login and decide whether it stays in place after the request is satisfied. Vendor-Unique request. Allows a LLDD-specific request to be passed to the LLDD, and the passing of a response back to the application. On an fc_rport basis: Send ELS request to nport and wait for ELS response. Send CT request to nport and wait for CT response. The patch also exports several headers from include/scsi such that they can be available to user-space applications: include/scsi/scsi.h include/scsi/scsi_netlink.h include/scsi/scsi_netlink_fc.h include/scsi/scsi_bsg_fc.h For further information, refer to the last RFC: http://marc.info/?l=linux-scsi&m=123436574018579&w=2 Note: Documentation is still spotty and will be added later. [bharrosh@panasas.com: update for new block API] Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] fc-transport: Close state transition-window during rport deletion.Andrew Vasquez2009-05-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | Andrew Vasquez wrote: > fc-transport: Close state transition-window during rport deletion. > > After an rport's state has transitioned to FC_PORTSTATE_BLOCKED, > but, prior to making the upcall to 'block' the scsi-target > associated with an rport, queued commands can recycle and > ultimately run out of retries causing failures to propagate to > upper-level drivers. Close this transition-window by returning > the non-'retries' modifying DID_IMM_RETRY status for submitted > I/Os. The same can happen for iscsi when transitioning from logged in to failed and blocking the sdevs. This patch converts iscsi and fc's transitions back to use DID_IMM_RETRY instead of DID_TRANSPORT_DISRUPTED which has a limited number of retries that we do not want to use for handling this race. Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> [Addition of iscsi and fc port online devloss case conversion by Mike Christie] Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] fc transport: restore missing dev_loss_tmo callback to LLDDJames Smart2009-01-061-0/+1
| | | | | | | | | | | When we reworked the transport for the rport lifetimes, in cases where the rport was reused as a container for tgt id bindings, we inadvertantly removed the callback to the driver indicating that dev_loss_tmo had fired. This patch restores that functionality. Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] fc_transport: fix old bug on bitflag definitionsJames Smart2008-11-211-1/+1
| | | | | | | | | When the fastfail flag was added, it did not account for the flags being bit fields. Correct the definition so there is no longer a conflict. Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] fc class: Add support for new transport errorsMike Christie2008-10-131-3/+3
| | | | | | | | | | | | | | | | | | If the target is blocked and fast io fail tmo has not fired then we requeue with DID_TRANSPORT_DISRUPTED. Once that tmo fires we fail with DID_TRANSPORT_FAILFAST. v2 - seperate from "fc class: unblock target after calling terminate callback" to make it easier to review. - Add JamesS's ack from list. v2 - initial patch Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Acked-by: James Smart <James.Smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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