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* [SCSI] Merge branch 'linus'James Bottomley2009-06-121-47/+25Star
|\ | | | | | | | | | | | | | | | | Conflicts: drivers/message/fusion/mptsas.c fixed up conflict between req->data_len accessors and mptsas driver updates. Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
| * Merge branch 'master' into for-2.6.31Jens Axboe2009-05-222-36/+109
| |\ | | | | | | | | | | | | | | | | | | | | | Conflicts: drivers/block/hd.c drivers/block/mg_disk.c Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | libosd: Use of new blk_make_requestBoaz Harrosh2009-05-191-25/+23Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use new blk_make_request() to allocate a request from bio and avoid using deprecated blk_rq_append_bio(). This patch is dependent on a block layer patch titled: [BLOCK] New blk_make_request() takes bio returns request This is the last usage of blk_rq_append_bio in osd, it can now be un-exported. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> CC: Jeff Garzik <jeff@garzik.org> CC: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | libosd: Use new blk_rq_map_kernBoaz Harrosh2009-05-191-22/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that blk_rq_map_kern will append the buffer onto the request we can use it easily for adding extra segments (eg. attributes) This patch is dependent on a block layer patch titled: [BLOCK] allow blk_rq_map_kern to append to requests Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
| * | block: cleanup rq->data_len usagesTejun Heo2009-05-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With recent unification of fields, it's now guaranteed that rq->data_len always equals blk_rq_bytes(). Convert all non-IDE direct users to accessors. IDE will be converted in a separate patch. Boaz: spotted incorrect data_len/resid_len conversion in osd. [ Impact: convert direct rq->data_len usages to blk_rq_bytes() ] Signed-off-by: Tejun Heo <tj@kernel.org> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Pete Zaitcev <zaitcev@redhat.com> Cc: Eric Moore <Eric.Moore@lsi.com> Cc: Markus Lidel <Markus.Lidel@shadowconnect.com> Cc: Darrick J. Wong <djwong@us.ibm.com> Cc: James Bottomley <James.Bottomley@HansenPartnership.com> Cc: Eric Moore <Eric.Moore@lsi.com> Cc: Boaz Harrosh <bharrosh@panasas.com> Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | | [SCSI] osd: Remove out-of-tree left oversBoaz Harrosh2009-06-102-62/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | * Delete Makefile. It is only used for out-of-tree compilation and was never needed. It slipped in by mistake. * Remove from Kbuild all the out of tree stuff as promised. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | | [SCSI] libosd: Use REQ_QUIET requests.Boaz Harrosh2009-06-101-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | libosd has it's own sense decoding and printout. Don't let scsi_lib duplicate that printout. (Which is done wrong in regard to osd commands) Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | | [SCSI] osduld: use filp_open() when looking up an osd-deviceBoaz Harrosh2009-06-101-36/+30Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch was inspired by Al Viro, for simplifying and fixing the retrieval of osd-devices by in-kernel users, eg: file systems. In-Kernel users, now, go through the same path user-mode does by opening a file on the osd char-device and though holding a reference to both the device and the Module. A file pointer was added to the osd_dev structure which is now allocated for each user. The internal osd_dev is no longer exposed outside of the uld. I wanted to do that for a long time so each libosd user can have his own defaults on the device. The API is left the same, so user code need not change. It is no longer needed to open/close a file handle on the osd char-device from user-mode, before mounting an exofs on it. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> CC: Al Viro <viro@ZenIV.linux.org.uk> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | | [SCSI] libosd: Define an osd_dev wrapper to retrieve the request_queueBoaz Harrosh2009-06-101-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | libosd users that need to work with bios, must sometime use the request_queue associated with the osd_dev. Make a wrapper for that, and convert all in-tree users. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | | [SCSI] libosd: osd_req_{read,write} takes a length parameterBoaz Harrosh2009-06-101-10/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For supporting of chained-bios we can not inspect the first bio only, as before. Caller shall pass the total length of the request, ie. sum_bytes(bio-chain). Also since the bio might be a chain we don't set it's direction on behalf of it's callers. The bio direction should be properly set prior to this call. So fix a couple of write users that now need to set the bio direction properly [In this patch I change both library code and user sites at exofs, to make it easy on integration. It should be submitted via James's scsi-misc tree.] Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> CC: Jeff Garzik <jeff@garzik.org> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | | [SCSI] libosd: Let _osd_req_finalize_data_integrity receive number of out_bytesBoaz Harrosh2009-06-101-4/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | _osd_req_finalize_data_integrity was trying to deduce the number of out_bytes from passed osd_request->out.bio. This is wrong when the bio is chained. The caller of _osd_req_finalize_data_integrity has more ready available information and should just pass it. Also in the light of future support for CDB-continuation segment this is a better solution. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | | [SCSI] libosd: osd_req_{read,write}_kern new APIBoaz Harrosh2009-06-101-0/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | By popular demand, define usefull wrappers for osd_req_read/write that recieve kernel pointers. All users had their own. Also remove these from exofs Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | | [SCSI] libosd: Better printout of OSD target system informationBoaz Harrosh2009-06-101-11/+12
| |/ |/| | | | | | | | | | | | | | | Shorten out the Attributes names. Align all results on column 24. Print system ID in a new line. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | Reduce path_lookup() abusesAl Viro2009-05-091-10/+10
| | | | | | | | | | | | | | | | ... use kern_path() where possible [folded a fix from rdd] Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | [SCSI] libosd: OSD2r05: on-the-wire changes for latest OSD2 revision 5.Boaz Harrosh2009-04-271-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | OSC's OSD2 target: [git clone git://git.open-osd.org/osc-osd/ master] (Initiator code prior to this patch must use: "git checkout CDB_VER_OSD2r01" in the target tree above) This is a summery of the wire changes: * OSDv2_ADDITIONAL_CDB_LENGTH == 192 => 228 (Total CDB is now 236 bytes) * Attributes List Element Header grew, so attribute values are 8 bytes aligned. * Cryptographic keys and signatures are 20 => 32 * Few new definitions. (Still missing new standard definitions attribute values, these do not change wire format and will be added later when needed) Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | [SCSI] libosd: OSD2r05: OSD_CRYPTO_KEYID_SIZE will grow 20 => 32 bytesBoaz Harrosh2009-04-271-6/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | In OSD2r04 draft, cryptographic key size changed to 32 bytes from OSD1's 20 bytes. This causes a couple of on-the-wire structures to change, including the CDB. In this patch the OSD1/OSD2 handling is separated out in regard to affected structures, but on-the-wire is still the same. All on the wire changes will be submitted in one patch for bisect-ability. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | [SCSI] libosd: OSD2r05: Prepare for rev5 attribute list changesBoaz Harrosh2009-04-271-18/+68
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In OSD2r05 draft each attribute list element header was changed so attribute-value would be 8 bytes aligned. In OSD2r01-r04 it was aligned on 2 bytes. (This is because in OSD2r01 the complete element was 8 bytes padded at end but the header was not adjusted and caused permanent miss-alignment.) OSD1 elements are not padded and might be or might not be aligned. OSD1 is still supported. In this code we do all the code re-factoring to separate OSD1/OSD2 differences but do not change actual wire format. All wire format changes will happen in one patch later, for bisect-ability. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* | [SCSI] libosd: fix potential ERR_PTR dereference in osd_initiator.cDan Carpenter2009-04-271-2/+2
|/ | | | | | | | | | bio_map_kern() returns an ERR_PTR() not NULL. Found by smatch (http://repo.or.cz/w/smatch.git). Compile tested. Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] osd_uld: Remove creation of osd_scsi class symlinkBoaz Harrosh2009-04-031-6/+0Star
| | | | | | | | | | | Remove the creation of the symlink from the device to it's class. On modern systems this is already created by a udev rule and would WARN on load. On old systems it is not needed, none of the current osd user-mode tools use this link. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libosd: fix blk_put_request called from within request_end_ioBoaz Harrosh2009-04-031-18/+24
| | | | | | | | | | | | | | | | A fix for a very serious and stupid bug in osd_initiator. It used to call blk_put_request() regardless of if it was from the end_io callback or if called after a sync execution. It should call the unlocked version __blk_put_request() instead. Also fixed is the remove of _abort_unexecuted_bios hack, and use of blk_end_request(,-ERROR,) to deallocate half baked requests. I've audited the code and it should be safe. Reported and Tested-by: Xu Yang <onlyxuyang@qq.com> Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libosd: Fix NULL dereference BUG when target is not OSD conformantBoaz Harrosh2009-03-121-4/+7
| | | | | | | | | | | | | Very old OSC's Target had a BUG in the Get/Set attributes where it was looking in the wrong places for attribute lists length. If used with the open-osd initiator, the initiator would dereference a NULL pointer when retrieving system_information attributes. Checks are added that retrieval of each attribute is successful before accessing its value. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] osd: Kconfig file for in-tree buildsBoaz Harrosh2009-03-121-0/+53
| | | | | | | | | | | | | Kconfig file for the drivers/scsi/osd subdirectory. Adds the following config items: config SCSI_OSD_INITIATOR config SCSI_OSD_ULD config SCSI_OSD_DPRINT_SENSE config SCSI_OSD_DEBUG Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libosd: SCSI/OSD Sense decoding supportBoaz Harrosh2009-03-122-0/+197
| | | | | | | | | | | | | | | | Implementation of the osd_req_decode_sense() API. Can be called by library users to decode what failed in command executions. Add SCSI_OSD_DPRINT_SENSE Kconfig variable. Possible values are: 0 - Do not print any errors to messages file <KERN_ERR> 1 - (Default) Print only decoded errors that are not recoverable. Recoverable errors are those that the target has complied with the request but with a warning. For example read passed end of object will return zeros after the last valid byte. 2- Print all errors. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libosd: OSDv2 auto detectionBoaz Harrosh2009-03-122-0/+130
| | | | | | | | | | | | | Auto detect an OSDv2 or OSDv1 target at run time. Note how none of the OSD API calls change. The tests do not know what device version it is. This test now passes against both the IBM-OSD-SIM OSD1 target as well as OSC's OSD2 target. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libosd: OSD version 2 SupportBoaz Harrosh2009-03-121-14/+80
| | | | | | | | | | | Add support for OSD2 at run time. It is now possible to run with both OSDv1 and OSDv2 targets at the same time. The actual detection should be preformed by the security manager, as the version is encoded in the capability structure. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libosd: Not implemented commandsBoaz Harrosh2009-03-121-0/+35
| | | | | | | | | Some commands declared in header are not yet implemented. Put them as stubs in .c file, just so they take their place in the file Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libosd: Add Flush and List-objects supportBoaz Harrosh2009-03-121-0/+124
| | | | | | | | | | | | Add support for the various List-objects commands. List-partitions-in-device, List-collections-in-partition, List-objects-in-partition, List-objects-in-collection. All these support partial listing and continuation. Add support for the different Flush commands and options. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libosd: OSD Security processing stubsBoaz Harrosh2009-03-121-0/+86
| | | | | | | | | | Layout the signing of OSD's CDB and all-data security modes. The actual code for signing the data and CDB is missing, but the code flow and the extra buffer segments are all in place. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libosd: attributes SupportBoaz Harrosh2009-03-121-0/+579
| | | | | | | | | | | | Support for both List-Mode and Page-Mode osd attributes. One of these operations may be added to most other operations. Define the OSD standard's attribute pages constants and structures (osd_attributes.h) Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] osd_uld: API for retrieving osd devices from KernelBoaz Harrosh2009-03-121-0/+63
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Kernel clients like exofs can retrieve struct osd_dev(s) by means of below API. + osduld_path_lookup() - given a path (e.g "/dev/osd0") locks and returns the corresponding struct osd_dev, which is then needed for subsequent libosd use. + osduld_put_device() - free up use of an osd_dev. Devices can be shared by multiple clients. The osd_uld_device's life time is governed by an embedded kref structure. The osd_uld_device holds an extra reference to both it's char-device and it's scsi_device, and will release these just before the final deallocation. There are three possible lock sources of the osd_uld_device 1. First and for most is the probe() function called by scsi-ml upon a successful login into a target. Released in release() when logout. 2. Second by user-mode file handles opened on the char-dev. 3. Third is here by Kernel users. All three locks must be removed before the osd_uld_device is freed. The MODULE has three lock sources as well: 1. scsi-ml at probe() time, removed after release(). (login/logout) 2. The user-mode file handles open/close. 3. Import symbols by client modules like exofs. TODO: This API is not enough for the pNFS-objects LD. A more versatile API will be needed. Proposed API could be: struct osd_dev *osduld_sysid_lookup(const char id[OSD_SYSTEMID_LEN]); Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] osd_uld: OSD scsi ULDBoaz Harrosh2009-03-122-0/+426
| | | | | | | | | | | | | Add a Linux driver module that registers as a SCSI ULD and probes for OSD type SCSI devices. When an OSD-type SCSI device is found a character device is created in the form of /dev/osdX - where X goes from 0 up to hard coded 64. The Major character device number used is 260. Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
* [SCSI] libosd: OSDv1 preliminary implementationBoaz Harrosh2009-03-124-0/+547
Implementation of the most basic OSD functionality and infrastructure. Mainly Format, Create/Remove Partition, Create/Remove Object, and read/write. - Add Makefile and Kbuild to compile libosd.ko - osd_initiator.c Implementation file for osd_initiator.h and osd_sec.h APIs - osd_debug.h - Some kprintf macro definitions Signed-off-by: Boaz Harrosh <bharrosh@panasas.com> Reviewed-by: Benny Halevy <bhalevy@panasas.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
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