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* Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2008-10-10
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (37 commits) [SCSI] zfcp: fix double dbf id usage [SCSI] zfcp: wait on SCSI work to be finished before proceeding with init dev [SCSI] zfcp: fix erp list usage without using locks [SCSI] zfcp: prevent fc_remote_port_delete calls for unregistered rport [SCSI] zfcp: fix deadlock caused by shared work queue tasks [SCSI] zfcp: put threshold data in hba trace [SCSI] zfcp: Simplify zfcp data structures [SCSI] zfcp: Simplify get_adapter_by_busid [SCSI] zfcp: remove all typedefs and replace them with standards [SCSI] zfcp: attach and release SAN nameserver port on demand [SCSI] zfcp: remove unused references, declarations and flags [SCSI] zfcp: Update message with input from review [SCSI] zfcp: add queue_full sysfs attribute [SCSI] scsi_dh: suppress comparison warning [SCSI] scsi_dh: add Dell product information into rdac device handler [SCSI] qla2xxx: remove the unused SCSI_QLOGIC_FC_FIRMWARE option [SCSI] qla2xxx: fix printk format warnings [SCSI] qla2xxx: Update version number to 8.02.01-k8. [SCSI] qla2xxx: Ignore payload reserved-bits during RSCN processing. [SCSI] qla2xxx: Additional residual-count corrections during UNDERRUN handling. ...
| * [SCSI] fc_transport: Add an API to allow an LLD to create vportsAndrew Vasquez2008-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There's already a fc_vport_termintate() call exported by the transport. This patch adds a symmetric call to the API to allow an NPIV-capable LLD to instantiate vports sans user intervention. Additional comments/updates: Re: scsi_fc_transport.txt Add a function prototype for fc_vport_terminate similar to what's done for fc_vport_create Re: fc_vport_create I recommend we pass the channel number in fc_vport_create rather than fixing it at zero. Also, ids->vport_type should be set to FC_PORTTYPE_NPIV prior to calling fc_vport_create. The comment is also meaningless. Added-by and Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] Update the SCSI state model to allow blocking in the created stateJames Bottomley2008-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Brian King <brking@linux.vnet.ibm.com> reported that fibre channel devices can oops during scanning if their ports block (because the device goes from CREATED -> BLOCK -> RUNNING rather than CREATED -> BLOCK -> CREATED). Fix this by adding a new state: CREATED_BLOCK which can only transition back to CREATED and disallow the CREATED -> BLOCK transition. Now both the created and blocked states that the mid-layer recognises can include CREATED_BLOCK. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] add inline functions for recognising created and blocked statesJames Bottomley2008-10-03
| | | | | | | | | | | | | | The created and blocked states are very shortly going to correspond to mixed sdev_state states. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] scsi_netlink: Add transport and LLD recieve and event supportJames Smart2008-10-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds scsi netlink recieve and event support for transport and scsi LLDD's. It is a reimplementation of the patch posted last week by David Somayajulu. http://marc.info/?l=linux-scsi&m=121745486221819&w=2 There are a few things done differently: - Transport support is included - Event delivery is included - The vendor message is now its own unique message type, considered part of the generic "SCSI Transport". - LLDD entry points are now registered rather than included in the scsi_host_template. Background: When I started to implement the event handler via template, I had to either: muck up scsi_add_host and scsi_remove_host; or have the event handler search all possible shosts. Neither was acceptable. Moving to a registration solves this, and also limits the scope of the changes to something that could be backported to a distro without breaking an already-released-distro kabi. However, I admit it isn't as elegant, as the passing of the LLDD host template in the registration and the complexity around dynamic add/remove shows. - The receive path was augmented to require a unique identifier for the LLDD before the message was allowed to be handed off to the driver. Given how quickly very fatal errors occur if there's msg mismatches (which I saw in testing my own tools :), I believe this to be a very good thing. The id plays off the vendor id scheme already introduced for the vendor unique event messages used by FC. Additionally, the id use as the basis of the registration/deregistration. - Send assist functions, for both the transport and LLDDs are included. [fujita.tomonori@lab.ntt.co.jp: fix missing cast] Signed-off-by: James Smart <james.smart@emulex.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | block: unify request timeout handlingJens Axboe2008-10-09
|/ | | | | | | | | | | | | Right now SCSI and others do their own command timeout handling. Move those bits to the block layer. Instead of having a timer per command, we try to be a bit more clever and simply have one per-queue. This avoids the overhead of having to tear down and setup a timer for each command, so it will result in a lot less timer fiddling. Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* [SCSI] fix check of PQ and PDT bits for WLUNsJames Bottomley2008-08-29
| | | | | | | | | | | | | For IBM z series certain LUNs can no longer be accessed. This is because kernel version 2.6.19 a check was introduced not to create a generic SCSI device for devices that return PQ=1 and PDT=0x1f. For WLUNs (see SAM-3, p. 41ff) generic SCSI devices should be created unconditionally without looking at the PQ bit, so add a check for WLUNs in with this test. Acked-by: Martin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] sd: fix USB devices incorrectly reporting DIF supportHugh Dickins2008-08-06
| | | | | | | | | | | Some USB devices set the protect bit in the INQUIRY data which currently causes the DIF code in sd to assume (incorrectly) that they support READ_CAPACITY(16). Fix this (only for the time being) by making sure we only believe the protect bit in the inquiry data if the device claims conformance to SCSI-3 or above. Acked-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* Re-introduce "[SCSI] extend the last_sector_bug flag to cover more sectors"Linus Torvalds2008-08-06
| | | | | | | | | | | | | | | | | | | This re-introduces commit 2b142900784c6e38c8d39fa57d5f95ef08e735d8, which was reverted due to the regression it caused by commit fca082c9f1e11ec07efa8d2f9f13688521253f36. That regression was not root-caused by the original commit, it was just uncovered by it, and the real fix was done by Alan Stern in commit 580da34847488b404218d1d7f53b156f245f5555 ("Fix USB storage hang on command abort"). We can thus re-introduce the change that was confirmed by Alan Jenkins to be still required by his odd card reader. Cc: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Revert "[SCSI] extend the last_sector_bug flag to cover more sectors"Linus Torvalds2008-08-04
| | | | | | | | | | | | This reverts commit 2b142900784c6e38c8d39fa57d5f95ef08e735d8, since it seems to break some other USB storage devices (at least a JMicron USB to ATA bridge). As such, while it apparently fixes some cardreaders, it would need to be made conditional on the exact reader it fixes in order to avoid causing regressions. Cc: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [SCSI] extend the last_sector_bug flag to cover more sectorsAlan Jenkins2008-07-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The last_sector_bug flag was added to work around a bug in certain usb cardreaders, where they would crash if a multiple sector read included the last sector. The original implementation avoids this by e.g. splitting an 8 sector read which includes the last sector into a 7 sector read, and a single sector read for the last sector. The flag is enabled for all USB devices. This revealed a second bug in other usb cardreaders, which crash when they get a multiple sector read which stops 1 sector short of the last sector. Affected hardware includes the Kingston "MobileLite" external USB cardreader and the internal USB cardreader on the Asus EeePC. Extend the last_sector_bug workaround to ensure that any access which touches the last 8 hardware sectors of the device is a single sector long. Requests are shrunk as necessary to meet this constraint. This gives us a safety margin against potential unknown or future bugs affecting multi-sector access to the end of the device. The two known bugs only affect the last 2 sectors. However, they suggest that these devices are prone to fencepost errors and that multi-sector access to the end of the device is not well tested. Popular OS's use multi-sector accesses, but they rarely read the last few sectors. Linux (with udev & vol_id) automatically reads sectors from the end of the device on insertion. It is assumed that single sector accesses are more thoroughly tested during development. Signed-off-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Tested-by: Alan Jenkins <alan-jenkins@tuffmail.co.uk> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] scsi_eh_prep_cmnd should save scmd->underflowAlan Stern2008-07-26
| | | | | | | | | | | | | This patch (as1116) fixes a bug in scsi_eh_prep_cmnd() and scsi_eh_restore_cmnd(). These routines are supposed to save any values they change and restore them later, but someone forgot to save & restore scmd->underflow. This fixes part of the problem reported in Bugzilla #9638. [jejb: fix up rejections around DIF/DIX] Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] Support devices with protection informationMartin K. Petersen2008-07-26
| | | | | | | | | | | | | | | | | Implement support for DMA of protection information for devices that are data integrity capable. - Add support for mapping an extra scatter-gather list containing the protection information. - Allocate protection scsi_data_buffer if host is DIX (integrity DMA) capable. - Accessor function for checking whether a device has protection enabled. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] Command protection operationMartin K. Petersen2008-07-26
| | | | | | | | | | | | | | | | | | | | | | | | | Controllers that support DMA of protection information must be told explicitly how to handle the I/O. The controller has no knowledge of the protection capabilities of the target device so this information must be passed in the scsi_cmnd. - The protection operation tells the HBA whether to generate, strip or verify protection information. - The protection type tells the HBA which layout the target is formatted with. This is necessary because the controller must be able to correctly interpret the included protection information in order to verify it. - When a scsi_cmnd is reused for error handling the protection operation must be cleared and saved while error handling is in progress. - prot_op and prot_type are placed in an existing hole in scsi_cmnd and don't cause the structure to grow. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] Host protection capabilitiesMartin K. Petersen2008-07-26
| | | | | | | | | | | | | | | | Controllers that support protection information must indicate this to the SCSI midlayer so that the ULD can prepare scsi_cmnds accordingly. This patch implements a host mask and various types of protection: - DIF Type 1-3 (between HBA and disk) - DIX Type 0-3 (between OS and HBA) The patch also allows the HBA to set the guard type to something different than the T10-mandated CRC. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] scsi_dh: attach to hardware handler from dm-mpathHannes Reinecke2008-07-26
| | | | | | | | | | | | | multipath keeps a separate device table which may be more current than the built-in one. So we should make sure to always call ->attach whenever a multipath map with hardware handler is instantiated. And we should call ->detach on removal, too. [sekharan: update as per comments from agk] Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] scsi_dh: add generic SPC-3 alua handlerHannes Reinecke2008-07-26
| | | | | | Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] scsi_dh: Update EMC handlerHannes Reinecke2008-07-26
| | | | | | | | | | | | | | This patch converts the EMC device handler to use a proper state machine. We now also parse the extended INQUIRY information to determine if long trespass commands are supported. And we're now using the long trespass command correctly. And finally there's now an check at init time to refuse to attach to devices not supporting EMC-specific VPD pages. Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] scsi_dh: Implement common device table handlingHannes Reinecke2008-07-26
| | | | | | | | | | | | | Instead of having each and every driver implement its own device table scanning code we should rather implement a common routine and scan the device tables there. This allows us also to implement a general notifier chain callback for all device handler instead for one per handler. [sekharan: Fix rejections caused by conflicting bug fix] Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] Make host_no an unsigned intMatthew Wilcox2008-07-26
| | | | | | | | | Daniel Debonzi reports that he has managed to wrap host_no. Increasing the number of host numbers available to 32-bit from 16-bit allows the problem to be evaded for another hundred years. Signed-off-by: Matthew Wilcox <willy@linux.intel.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* driver core: remove KOBJ_NAME_LEN defineKay Sievers2008-07-22
| | | | | | | | | Kobjects do not have a limit in name size since a while, so stop pretending that they do. Signed-off-by: Kay Sievers <kay.sievers@vrfy.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2008-07-15
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (102 commits) [SCSI] scsi_dh: fix kconfig related build errors [SCSI] sym53c8xx: Fix bogus sym_que_entry re-implementation of container_of [SCSI] scsi_cmnd.h: remove double inclusion of linux/blkdev.h [SCSI] make struct scsi_{host,target}_type static [SCSI] fix locking in host use of blk_plug_device() [SCSI] zfcp: Cleanup external header file [SCSI] zfcp: Cleanup code in zfcp_erp.c [SCSI] zfcp: zfcp_fsf cleanup. [SCSI] zfcp: consolidate sysfs things into one file. [SCSI] zfcp: Cleanup of code in zfcp_aux.c [SCSI] zfcp: Cleanup of code in zfcp_scsi.c [SCSI] zfcp: Move status accessors from zfcp to SCSI include file. [SCSI] zfcp: Small QDIO cleanups [SCSI] zfcp: Adapter reopen for large number of unsolicited status [SCSI] zfcp: Fix error checking for ELS ADISC requests [SCSI] zfcp: wait until adapter is finished with ERP during auto-port [SCSI] ibmvfc: IBM Power Virtual Fibre Channel Adapter Client Driver [SCSI] sg: Add target reset support [SCSI] lib: Add support for the T10 (SCSI) Data Integrity Field CRC [SCSI] sd: Move scsi_disk() accessor function to sd.h ...
| * [SCSI] scsi_dh: fix kconfig related build errorsChandra Seetharaman2008-07-15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Do not automatically "select" SCSI_DH for dm-multipath. If SCSI_DH doesn't exist,just do not allow hardware handlers to be used. Handle SCSI_DH being a module also. Make sure it doesn't allow DM_MULTIPATH to be compiled in when SCSI_DH is a module. [jejb: added comment for Kconfig syntax] Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Reported-by: Randy Dunlap <randy.dunlap@oracle.com> Reported-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] scsi_cmnd.h: remove double inclusion of linux/blkdev.hAlexander Beregalov2008-07-12
| | | | | | | | | | Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] zfcp: Move status accessors from zfcp to SCSI include file.Martin Petermann2008-07-12
| | | | | | | | | | | | | | | | | | | | Move the accessor functions for the scsi_cmnd status from zfcp to the SCSI include file. Change the interface to the functions to pass the scsi_cmnd pointer instead of the status pointer. Signed-off-by: Martin Petermann <martin@linux.vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] sg: Add target reset supportBrian King2008-07-12
| | | | | | | | | | | | | | | | Adds support for target reset to SG_SCSI_RESET. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Acked-by: Douglas Gilbert <dougg@torque.net> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] sd: Move sd.h header fileMartin K. Petersen2008-07-12
| | | | | | | | | | | | | | | | Christoph objected to having sd.h in include/scsi since it is internal to the sd driver. Move it to drivers/scsi/sd.h. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] iscsi_tcp: Enable any size commandBoaz Harrosh2008-07-12
| | | | | | | | | | | | | | | | | | | | | | Let through upto the largest command of 260 defined by the scsi standard. iscsi core supports this already. Now that the scsi-ml supports it we can start using large commands. [jejb:rejections fixed up] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Acked-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] libiscsi, iser, tcp: remove recv_lockMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The recv lock was defined so the iscsi layer could block the recv path from processing IO during recovery. It turns out iser just set a lock to that pointer which was pointless. We now disconnect the transport connection before doing recovery so we do not need the recv lock. For iscsi_tcp we still stop the recv path incase older tools are being used. This patch also has iscsi_itt_to_ctask user grab the session lock and has the caller access the task with the lock or get a ref to it in case the target is broken and sends a tmf success response then sends data or a response for the command that was supposed to be affected bty the tmf. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] libiscsi: fix cmds_max settingMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | Drivers expect that the cmds_max value they pass to the iscsi layer is the max scsi commands + mgmt tasks. This patch implements that and fixes some checks for nr cmd limits. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] iscsi class: Add session initiatorname and ifacename sysfs attrs.Mike Christie2008-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds two new attrs used for creating initiator ports and binding sessions to hardware. The session level initiatorname: Since bnx2i does a scsi_host per host device, we need to add the iface initiator port settings on the session, so we can create multiple initiator ports (each with different inames) per device/scsi_host. The current iname reflects that qla4xxx can have one iname per hba, and we are allocating a host per session for software. The iname on the host will remain so we can export and set the hba level qla4xxx setting. The ifacename attr: To bind a session to a some peice of hardware in userspace we maintain some mappings, but during boot or iscsid restart (iscsid contains the user space part of the driver) we need to be able to figure out which of those host mappings abstractions maps to certain sessions. This patch adds a ifacename attr, which userspace can set to id the host side of the endpoint across pivot_roots and iscsid restarts. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] iscsi class: add endpoint classMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | | | | | | | Add sysfs representation for the endpoint, so userspace can match the host and session to the endpoint. This will allow us to set the host's parent correctly at host creation time. The next patches will convert tcp and iser, and fix iser's dma_mask bug. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] iscsi class: user device_for_each_child instead of duplicating ↵Mike Christie2008-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | session list Currently we duplicate the list of sessions, because we were using the test for if a session was on the host list to indicate if the session was bound or unbound. We can instead use the target_id and fix up the class so that drivers like bnx2i do not have to manage the target id space. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] libiscsi: rename iscsi_cmd_task to iscsi_taskMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | This is the second part of the iscsi task merging, and all it does it rename iscsi_cmd_task to iscsi_task and mtask/ctask to just task. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] libiscsi: merge iscsi_mgmt_task and iscsi_cmd_taskMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | | | | | There is no need to have the mgmt and cmd tasks separate structs. It used to save a lot of memory when we overprealocated memory for tasks, but the next patches will set up the driver so in the future they can use a mempool or some other common scsi command allocator and common tagging. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] libiscsi, iscsi_tcp, iser: add session cmds array accessorMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | | | | | Currently to get a ctask from the session cmd array, you have to know to use the itt modifier. To make this easier on LLDs and so in the future we can easilly kill the session array and use the host shared map instead, this patch adds a nice wrapper to strip the itt into a session->cmds index and return a ctask. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] iscsi: modify iscsi printk so it can take driver data pointersMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | Some drivers want to be able to just pass in the driver data pointers to the iscsi objects. To enable this we need the iscsi printk macro to cast the object. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] iscsi: remove session/conn_data_size from iscsi_transportMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | This removes the session and conn data_size fields from the iscsi_transport. Just pass in the value like with host allocation. This patch also makes it so the LLD iscsi_conn data is allocated with the iscsi_cls_conn. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] iscsi: add iscsi host helpersMike Christie2008-07-12
| | | | | | | | | | | | | | | | This finishes the host/session unbinding, by adding some helpers to add and remove hosts and the session they manage. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] iscsi: remove session and host binding in libiscsiMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | | | | | bnx2i allocates a host per netdevice but will use libiscsi, so this unbinds the session from the host in that code. This will also be useful for the iser parent device dma settings fixes. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] iscsi class: rename iscsi_host to iscsi_cls_hostMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | This renames the iscsi_host to iscsi_cls_host to match the other structs, because libiscsi wants to use the iscsi_host name in the future. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] iscsi class, iscsi drivers: remove unused iscsi_transport attrsMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | max_cmd_len and max_conn are not really used. max_cmd_len is always 16 and can be set by the LLD. max_conn is always one since we do not support MCS. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] iscsi class, iscsi_tcp/iser: add host arg to session creationMike Christie2008-07-12
| | | | | | | | | | | | | | | | | | | | | | | | | | iscsi offload (bnx2i and qla4xx) allocate a scsi host per hba, so the session creation path needs a shost/host_no argument. Software iscsi/iser will follow the same behabior as before where it allcoates a host per session, but in the future iser will probably look more like bnx2i where the host's parent is the hardware (rnic for iser and for bnx2i it is the nic), because it does not use a socket layer like how iscsi_tcp does. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] scsi_dh: add infrastructure for SCSI Device HandlersChandra Seetharaman2008-06-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some of the storage devices (that can be accessed through multiple paths), do need some special handling for 1. Activating the passive path of the storage access. 2. Decode and handle the special sense codes returned by the devices. 3. Handle the I/Os being sent to the passive path, especially during the device probe time. when accessed through multiple paths. As of today this special device handling is done at the dm-multipath layer using dm-handlers. That works well for (1); for (2) to be handled at dm layer, scsi sense information need to be exported from SCSI to dm-layer, which is not very attractive; (3) cannot be done at all at the dm layer. Device handler has been moved to SCSI mainly to handle (2) and (3) properly. Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: Mike Anderson <andmike@linux.vnet.ibm.com> Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | scsi: sd: optionally set power condition in START STOP UNITStefan Richter2008-07-14
|/ | | | | | | | | | | | | | | | | | | | | | | | | | Adds a new scsi_device flag, start_stop_pwr_cond: If enabled, the sd driver will not send plain START STOP UNIT commands but ones with the power condition field set to 3 (standby) or 1 (active) respectively. Some FireWire disk firmwares do not stop the motor if power condition is zero. Or worse, they become unresponsive after a START STOP UNIT with power condition = 0 and start = 0. http://lkml.org/lkml/2008/4/29/704 This patch only adds the necessary code to sd_mod but doesn't activate it. Follow-up patches to the FireWire drivers will add detection of affected devices and enable the code for them. I did not add power condition values to scsi_error.c::scsi_eh_try_stu() for now. The three firmwares which suffer from above mentioned problems do not need START STOP UNIT in the error handler, and they are not adversely affected by START STOP UNIT with power condition = 0 and start = 1 (like scsi_eh_try_stu() sends it if scsi_device.allow_restart is enabled). Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de> Tested-by: Tino Keitel <tino.keitel@gmx.de>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6Linus Torvalds2008-05-02
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: [SCSI] aic94xx: fix section mismatch [SCSI] u14-34f: Fix 32bit only problem [SCSI] dpt_i2o: sysfs code [SCSI] dpt_i2o: 64 bit support [SCSI] dpt_i2o: move from virt_to_bus/bus_to_virt to dma_alloc_coherent [SCSI] dpt_i2o: use standard __init / __exit code [SCSI] megaraid_sas: fix suspend/resume sections [SCSI] aacraid: Add Power Management support [SCSI] aacraid: Fix jbod operations scan issues [SCSI] aacraid: Fix warning about macro side-effects [SCSI] add support for variable length extended commands [SCSI] Let scsi_cmnd->cmnd use request->cmd buffer [SCSI] bsg: add large command support [SCSI] aacraid: Fix down_interruptible() to check the return value correctly [SCSI] megaraid_sas; Update the Version and Changelog [SCSI] ibmvscsi: Handle non SCSI error status [SCSI] bug fix for free list handling [SCSI] ipr: Rename ipr's state scsi host attribute to prevent collisions [SCSI] megaraid_mbox: fix Dell CERC firmware problem
| * [SCSI] add support for variable length extended commandsBoaz Harrosh2008-05-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support for variable-length, extended, and vendor specific CDBs to scsi-ml. It is now possible for initiators and ULD's to issue these types of commands. LLDs need not change much. All they need is to raise the .max_cmd_len to the longest command they support (see iscsi patch). - clean-up some code paths that did not expect commands to be larger than 16, and change cmd_len members' type to short as char is not enough. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * [SCSI] Let scsi_cmnd->cmnd use request->cmd bufferBoaz Harrosh2008-05-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - struct scsi_cmnd had a 16 bytes command buffer of its own. This is an unnecessary duplication and copy of request's cmd. It is probably left overs from the time that scsi_cmnd could function without a request attached. So clean that up. - Once above is done, few places, apart from scsi-ml, needed adjustments due to changing the data type of scsi_cmnd->cmnd. - Lots of drivers still use MAX_COMMAND_SIZE. So I have left that #define but equate it to BLK_MAX_CDB. The way I see it and is reflected in the patch below is. MAX_COMMAND_SIZE - means: The longest fixed-length (*) SCSI CDB as per the SCSI standard and is not related to the implementation. BLK_MAX_CDB. - The allocated space at the request level - I have audit all ISA drivers and made sure none use ->cmnd in a DMA Operation. Same audit was done by Andi Kleen. (*)fixed-length here means commands that their size can be determined by their opcode and the CDB does not carry a length specifier, (unlike the VARIABLE_LENGTH_CMD(0x7f) command). This is actually not exactly true and the SCSI standard also defines extended commands and vendor specific commands that can be bigger than 16 bytes. The kernel will support these using the same infrastructure used for VARLEN CDB's. So in effect MAX_COMMAND_SIZE means the maximum size command scsi-ml supports without specifying a cmd_len by ULD's Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | IB/iser: Count FMR alignment violations per sessionEli Dorfman2008-04-29
|/ | | | | | | | Count FMR alignment violations per session as part of the iscsi statistics. Signed-off-by: Eli Dorfman <elid@voltaire.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
* [SCSI] rework scsi_target allocationJames Bottomley2008-04-22
| | | | | | | | | | | | | | | | The current target allocation code registeres each possible target with sysfs; it will be deleted again if no useable LUN on this target was found. This results in a string of 'target add/target remove' uevents. Based on a patch by Hannes Reinecke <hare@suse.de> this patch reworks the target allocation code so that only uevents for existing targets are sent. The sysfs registration is split off from the existing scsi_target_alloc() into a in a new scsi_add_target() function, which should be called whenever an existing target is found. Only then a uevent is sent, so we'll be generating events for existing targets only. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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