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2021-10-22scsi: add a scsi_alloc_request helperChristoph Hellwig
Add a new helper that calls blk_get_request and initializes the scsi_request to avoid the indirect call through ->.initialize_rq_fn. Note that this makes the pktcdvd driver depend on the SCSI core, but given that only SCSI devices support SCSI passthrough requests that is not a functional change. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Hannes Reinecke <hare@suse.de> Link: https://lore.kernel.org/r/20211021060607.264371-6-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-10-18block: move struct request to blk-mq.hChristoph Hellwig
struct request is only used by blk-mq drivers, so move it and all related declarations to blk-mq.h. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com> Link: https://lore.kernel.org/r/20210920123328.1399408-18-hch@lst.de Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-09-22scsi: core: Remove 'current_tag'Hannes Reinecke
The 'current_tag' field in struct scsi_device is unused now; remove it. Link: https://lore.kernel.org/r/1631696835-136198-4-git-send-email-john.garry@huawei.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-17scsi: core: Remove scsi_cmnd.tagJohn Garry
It is never read, so get rid of it. Link: https://lore.kernel.org/r/1628862553-179450-4-git-send-email-john.garry@huawei.com Reviewed-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: John Garry <john.garry@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-11scsi: core: Add helper to return number of logical blocks in a requestMartin K. Petersen
Link: https://lore.kernel.org/r/20210806040023.5355-2-martin.petersen@oracle.com Cc: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-11scsi: core: Remove the request member from struct scsi_cmndBart Van Assche
Since all scsi_cmnd.request users are gone, remove the request pointer from struct scsi_cmnd. Link: https://lore.kernel.org/r/20210809230355.8186-53-bvanassche@acm.org Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Ming Lei <ming.lei@redhat.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-11scsi: core: Use scsi_cmd_to_rq() instead of scsi_cmnd.requestBart Van Assche
Prepare for removal of the request pointer by using scsi_cmd_to_rq() instead. Cast away constness where necessary when passing a SCSI command pointer to scsi_cmd_to_rq(). This patch does not change any functionality. Link: https://lore.kernel.org/r/20210809230355.8186-3-bvanassche@acm.org Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Ming Lei <ming.lei@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-08-11scsi: core: Introduce the scsi_cmd_to_rq() functionBart Van Assche
The 'request' member of struct scsi_cmnd is superfluous. The struct request and struct scsi_cmnd data structures are adjacent and hence the request pointer can be derived easily from a scsi_cmnd pointer. Introduce a helper function that performs that conversion in a type-safe way. This patch is the first step towards removing the request member from struct scsi_cmnd. Making that change has the following advantages: - This is a performance optimization since adding an offset to a pointer takes less time than dereferencing a pointer. - struct scsi_cmnd becomes smaller. Link: https://lore.kernel.org/r/20210809230355.8186-2-bvanassche@acm.org Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Cc: Ming Lei <ming.lei@redhat.com> Reviewed-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-30scsi: block: Remove the remaining SG_IO-related fields from struct request_queueChristoph Hellwig
Move the sg_timeout and sg_reserved_size fields into the bsg_device and scsi_device structures as they have nothing to do with generic block I/O. Note that these values are now separate for bsg vs. SCSI device node access, but that just matches how /dev/sg vs the other nodes has always behaved. Link: https://lore.kernel.org/r/20210729064845.1044147-4-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-30scsi: bsg: Simplify device registrationChristoph Hellwig
Use the per-device cdev_device_interface to store the bsg data in the char device inode, and thus remove the need to embedd the bsg_class_device structure in the request_queue. Link: https://lore.kernel.org/r/20210729064845.1044147-2-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: scsi_ioctl: Unexport sg_scsi_ioctl()Christoph Hellwig
Just call scsi_ioctl() in sg as that has the same effect. Link: https://lore.kernel.org/r/20210724072033.1284840-25-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: scsi_ioctl: Move the "block layer" SCSI ioctl handling to drivers/scsiChristoph Hellwig
Merge the ioctl handling in block/scsi_ioctl.c into its only caller in drivers/scsi/scsi_ioctl.c. Link: https://lore.kernel.org/r/20210724072033.1284840-19-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: scsi_ioctl: Remove scsi_req_init()Christoph Hellwig
Merge scsi_req_init() into its only caller. Link: https://lore.kernel.org/r/20210724072033.1284840-16-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: scsi_ioctl: Call scsi_cmd_ioctl() from scsi_ioctl()Christoph Hellwig
Ensure SCSI ULD only has to call a single ioctl helper. This also adds a bunch of missing ioctls to the ch driver, and removes the need for a duplicate implementation of SCSI_IOCTL_SEND_COMMAND command. Link: https://lore.kernel.org/r/20210724072033.1284840-12-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-28scsi: core: Remove scsi_compat_ioctl()Christoph Hellwig
Just handle the compat case in scsi_ioctl() using in_compat_syscall(). Link: https://lore.kernel.org/r/20210724072033.1284840-7-hch@lst.de Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-21scsi: core: Add new flag BLIST_IGN_MEDIA_CHANGEMartin Kepplinger
Add a new flag for devices that erroneously establish MEDIUM MAY HAVE CHANGED unit attentions. Drivers can set this flag to make the SCSI layer ignore media change events during resume. [mkp: add "ignore" and add corresponding flag to struct scsi_device] Link: https://lore.kernel.org/r/20210704075403.147114-2-martin.kepplinger@puri.sm Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-07-20scsi: core: Make scsi_get_lba() return the LBAMartin K. Petersen
scsi_get_lba() confusingly returned the block layer sector number expressed in units of 512 bytes. Now that we have a more aptly named scsi_get_sector() function, make scsi_get_lba() return the actual LBA. Link: https://lore.kernel.org/r/20210609033929.3815-13-martin.petersen@oracle.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Message-Id: <20210609033929.3815-13-martin.petersen@oracle.com>
2021-07-20scsi: core: Introduce scsi_get_sector()Bart Van Assche
Since scsi_get_lba() returns a sector_t value instead of the LBA, the name of that function is confusing. Introduce an identical function scsi_get_sector(). Link: https://lore.kernel.org/r/20210513223757.3938-2-bvanassche@acm.org Link: https://lore.kernel.org/r/20210609033929.3815-11-martin.petersen@oracle.com Cc: Christoph Hellwig <hch@lst.de> Cc: Ming Lei <ming.lei@redhat.com> Cc: Hannes Reinecke <hare@suse.de> Reviewed-by: Damien Le Moal <damien.lemoal@wdc.com> Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Message-Id: <20210609033929.3815-11-martin.petersen@oracle.com>
2021-07-20scsi: core: Add scsi_prot_ref_tag() helperMartin K. Petersen
We are about to remove the request pointer from struct scsi_cmnd and that will complicate getting to the ref_tag via t10_pi_ref_tag() in the various drivers. Introduce a helper function to retrieve the reference tag so drivers will not have to worry about the details. Link: https://lore.kernel.org/r/20210609033929.3815-2-martin.petersen@oracle.com Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Benjamin Block <bblock@linux.ibm.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Message-Id: <20210609033929.3815-2-martin.petersen@oracle.com>
2021-07-02Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds
Pull SCSI updates from James Bottomley: "This series consists of the usual driver updates (ufs, ibmvfc, megaraid_sas, lpfc, elx, mpi3mr, qedi, iscsi, storvsc, mpt3sas) with elx and mpi3mr being new drivers. The major core change is a rework to drop the status byte handling macros and the old bit shifted definitions and the rest of the updates are minor fixes" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (287 commits) scsi: aha1740: Avoid over-read of sense buffer scsi: arcmsr: Avoid over-read of sense buffer scsi: ips: Avoid over-read of sense buffer scsi: ufs: ufs-mediatek: Add missing of_node_put() in ufs_mtk_probe() scsi: elx: libefc: Fix IRQ restore in efc_domain_dispatch_frame() scsi: elx: libefc: Fix less than zero comparison of a unsigned int scsi: elx: efct: Fix pointer error checking in debugfs init scsi: elx: efct: Fix is_originator return code type scsi: elx: efct: Fix link error for _bad_cmpxchg scsi: elx: efct: Eliminate unnecessary boolean check in efct_hw_command_cancel() scsi: elx: efct: Do not use id uninitialized in efct_lio_setup_session() scsi: elx: efct: Fix error handling in efct_hw_init() scsi: elx: efct: Remove redundant initialization of variable lun scsi: elx: efct: Fix spelling mistake "Unexected" -> "Unexpected" scsi: lpfc: Fix build error in lpfc_scsi.c scsi: target: iscsi: Remove redundant continue statement scsi: qla4xxx: Remove redundant continue statement scsi: ppa: Switch to use module_parport_driver() scsi: imm: Switch to use module_parport_driver() scsi: mpt3sas: Fix error return value in _scsih_expander_add() ...
2021-06-10scsi: fc: FDMI enhancementJaved Hasan
Added RHBA and RPA attributes type and length. As per FC_GC_7 document section "Table 400 – Attribute Entry Types and associated Values" ASCII type attributes length can be vary from "4 to 256 byte". If we keep all RHBA ASCII attributes length 256 then total length is going upto 2750, which is far more than 2048 (max frame size). In libfc we do have logic to split FCP commands but not for CT commands. Practically all version/names get covered with in 64 bytes except OS name, for that we need 128 bytes. Hence length of all RBHA ASCII attributes is reduced to 64 bytes and 128 bytes in case of OS name. RPA attributes total length is within frame size. Link: https://lore.kernel.org/r/20210603121623.10084-6-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>
2021-06-10scsi: libfc: Add FDMI-2 attributesJaved Hasan
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>
2021-06-09scsi: fc: Correct RHBA attributes lengthJaved Hasan
As per the FC-GS-5 specification, attribute lengths of node_name and manufacturer should in range of "4 to 64 Bytes" only. Link: https://lore.kernel.org/r/20210603101404.7841-2-jhasan@marvell.com Fixes: e721eb0616f6 ("scsi: scsi_transport_fc: Match HBA Attribute Length with HBAAPI V2.0 definitions") CC: stable@vger.kernel.org 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>
2021-06-02scsi: core: Change the type of the second argument of ↵Bart Van Assche
scsi_host_complete_all_commands() Allow the compiler to verify the type of the second argument passed to scsi_host_complete_all_commands(). Link: https://lore.kernel.org/r/20210524025457.11299-4-bvanassche@acm.org Cc: Hannes Reinecke <hare@suse.com> Cc: John Garry <john.garry@huawei.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02scsi: core: Introduce enums for the SAM and host status codesBart Van Assche
Make it possible for the compiler to verify whether SAM and host status codes are used correctly. [mkp: resolve conflicts with Hannes' SCSI result series] Link: https://lore.kernel.org/r/20210524025457.11299-3-bvanassche@acm.org Cc: Hannes Reinecke <hare@suse.com> Reviewed-by: John Garry <john.garry@huawei.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02scsi: libsas: Introduce more SAM status code aliases in enum exec_statusBart Van Assche
This patch prepares for converting SAM status codes into an enum. Without this patch converting SAM status codes into an enumeration type would trigger complaints about enum type mismatches for the SAS code. Link: https://lore.kernel.org/r/20210524025457.11299-2-bvanassche@acm.org Cc: Hannes Reinecke <hare@suse.com> Cc: Artur Paszkiewicz <artur.paszkiewicz@intel.com> Cc: Jason Yan <yanaijie@huawei.com> Reviewed-by: John Garry <john.garry@huawei.com> Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Acked-by: Jack Wang <jinpu.wang@ionos.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02Merge branch '5.14/scsi-result' into 5.14/scsi-stagingMartin K. Petersen
Include Hannes' SCSI command result rework in the staging branch. [mkp: remove DRIVER_SENSE from mpi3mr] Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02scsi: iscsi: Hold task ref during TMF timeout handlingMike Christie
For aborts, qedi needs to cleanup the FW then send the TMF from a worker thread. While it's doing these the cmd could complete normally and the TMF could time out. libiscsi would then complete the iscsi_task which will call into the driver to cleanup the driver level resources while it still might be accessing them for the cleanup/abort. This has iscsi_eh_abort keep the iscsi_task ref if the TMF times out, so qedi does not have to worry about if the task is being freed while in use and does not need to get its own ref. Link: https://lore.kernel.org/r/20210525181821.7617-18-michael.christie@oracle.com Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02scsi: iscsi: Fix conn use after free during resetsMike Christie
If we haven't done a unbind target call we can race where iscsi_conn_teardown wakes up the EH thread and then frees the conn while those threads are still accessing the conn ehwait. We can only do one TMF per session so this just moves the TMF fields from the conn to the session. We can then rely on the iscsi_session_teardown->iscsi_remove_session->__iscsi_unbind_session call to remove the target and it's devices, and know after that point there is no device or scsi-ml callout trying to access the session. Link: https://lore.kernel.org/r/20210525181821.7617-14-michael.christie@oracle.com Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02scsi: iscsi: Add iscsi_cls_conn refcount helpersMike Christie
There are a couple places where we could free the iscsi_cls_conn while it's still in use. This adds some helpers to get/put a refcount on the struct and converts an exiting user. Subsequent commits will then use the helpers to fix 2 bugs in the eh code. Link: https://lore.kernel.org/r/20210525181821.7617-11-michael.christie@oracle.com Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02scsi: iscsi: Fix in-kernel conn failure handlingMike Christie
Commit 0ab710458da1 ("scsi: iscsi: Perform connection failure entirely in kernel space") has the following regressions/bugs that this patch fixes: 1. It can return cmds to upper layers like dm-multipath where that can retry them. After they are successful the fs/app can send new I/O to the same sectors, but we've left the cmds running in FW or in the net layer. We need to be calling ep_disconnect if userspace is not up. This patch only fixes the issue for offload drivers. iscsi_tcp will be fixed in separate commit because it doesn't have a ep_disconnect call. 2. The drivers that implement ep_disconnect expect that it's called before conn_stop. Besides crashes, if the cleanup_task callout is called before ep_disconnect it might free up driver/card resources for session1 then they could be allocated for session2. But because the driver's ep_disconnect is not called it has not cleaned up the firmware so the card is still using the resources for the original cmd. 3. The stop_conn_work_fn can run after userspace has done its recovery and we are happily using the session. We will then end up with various bugs depending on what is going on at the time. We may also run stop_conn_work_fn late after userspace has called stop_conn and ep_disconnect and is now going to call start/bind conn. If stop_conn_work_fn runs after bind but before start, we would leave the conn in a unbound but sort of started state where IO might be allowed even though the drivers have been set in a state where they no longer expect I/O. 4. Returning -EAGAIN in iscsi_if_destroy_conn if we haven't yet run the in kernel stop_conn function is breaking userspace. We should have been doing this for the caller. Link: https://lore.kernel.org/r/20210525181821.7617-8-michael.christie@oracle.com Fixes: 0ab710458da1 ("scsi: iscsi: Perform connection failure entirely in kernel space") Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02scsi: iscsi: Rel ref after iscsi_lookup_endpoint()Mike Christie
Subsequent commits allow the kernel to do ep_disconnect. In that case we will have to get a proper refcount on the ep so one thread does not delete it from under another. Link: https://lore.kernel.org/r/20210525181821.7617-7-michael.christie@oracle.com Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02scsi: iscsi: Stop queueing during ep_disconnectMike Christie
During ep_disconnect we have been doing iscsi_suspend_tx/queue to block new I/O but every driver except cxgbi and iscsi_tcp can still get I/O from __iscsi_conn_send_pdu() if we haven't called iscsi_conn_failure() before ep_disconnect. This could happen if we were terminating the session, and the logout timed out before it was even sent to libiscsi. Fix the issue by adding a helper which reverses the bind_conn call that allows new I/O to be queued. Drivers implementing ep_disconnect can use this to make sure new I/O is not queued to them when handling the disconnect. Link: https://lore.kernel.org/r/20210525181821.7617-3-michael.christie@oracle.com Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02scsi: iscsi: Add task completion helperMike Christie
This adds a helper to detect if a cmd has completed but is not yet freed. Link: https://lore.kernel.org/r/20210525181821.7617-2-michael.christie@oracle.com Reviewed-by: Lee Duncan <lduncan@suse.com> Signed-off-by: Mike Christie <michael.christie@oracle.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-31scsi: core: Drop obsolete Linux-specific SCSI status codesHannes Reinecke
Originally the SCSI subsystem has been using 'special' SCSI status codes, which were the SAM-specified ones but shifted by 1. As most drivers have now been modified to use the SAM-specified ones, having two nearly identical sets of definitions only causes confusion. The Linux-specifed SCSI status codes have been marked obsolete for several years so drop them and use the SAM-specified status codes throughout. Link: https://lore.kernel.org/r/20210427083046.31620-41-hare@suse.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Douglas Gilbert <dgilbert@interlog.com> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-31scsi: core: Drop message byte helperHannes Reinecke
The message byte is now unused, so we can drop the helper to set the message byte and the check for message bytes during error recovery. Link: https://lore.kernel.org/r/20210427083046.31620-38-hare@suse.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-31scsi: core: Add scsi_msg_to_host_byte()Hannes Reinecke
Add helper to convert message byte into a host byte code. Link: https://lore.kernel.org/r/20210427083046.31620-18-hare@suse.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-31scsi: core: Add get_{status,host}_byte() accessor functionsHannes Reinecke
Add accessor functions for the host and status byte. Link: https://lore.kernel.org/r/20210427083046.31620-17-hare@suse.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-31scsi: core: Drop the now obsolete driver_byte definitionsHannes Reinecke
The driver_byte field in the result is now unused, so we can drop the definitions. Link: https://lore.kernel.org/r/20210427083046.31620-15-hare@suse.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-31scsi: core: Kill DRIVER_SENSEHannes Reinecke
Replace the check for DRIVER_SENSE with a check for scsi_status_is_check_condition(). Audit all callsites to ensure the SAM status is set correctly. For backwards compability move the DRIVER_SENSE definition to sg.h, and update sg, bsg, and scsi_ioctl to set the DRIVER_SENSE driver_status whenever SAM_STAT_CHECK_CONDITION is present. [mkp: fix zeroday srp warning] Link: https://lore.kernel.org/r/20210427083046.31620-10-hare@suse.de Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> fix
2021-05-31scsi: core: Introduce scsi_status_is_check_condition()Hannes Reinecke
Add a helper function scsi_status_is_check_condition() to encapsulate the frequent checks for SAM_STAT_CHECK_CONDITION. Link: https://lore.kernel.org/r/20210427083046.31620-9-hare@suse.de Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-31scsi: core: Introduce scsi_build_sense()Hannes Reinecke
Introduce scsi_build_sense() as a wrapper around scsi_build_sense_buffer() to format the buffer and set the correct SCSI status. Link: https://lore.kernel.org/r/20210427083046.31620-8-hare@suse.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-31scsi: core: Stop using DRIVER_ERRORHannes Reinecke
Return the actual error code in __scsi_execute() (which, according to the documentation, should have happened anyway). And audit all callers to cope with negative return values from __scsi_execute() and friends. [mkp: resolve conflict and return bool] Link: https://lore.kernel.org/r/20210427083046.31620-7-hare@suse.de Reviewed-by: Bart Van Assche <bvanassche@acm.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-28RDMA/srp: Apply the __packed attribute to members instead of structuresBart Van Assche
Applying the __packed attribute to an entire data structure results in suboptimal code on architectures that do not support unaligned accesses. Hence apply the __packed attribute only to those data members that are not naturally aligned. Link: https://lore.kernel.org/r/20210524041211.9480-4-bvanassche@acm.org Cc: Nicolas Morey-Chaisemartin <nmoreychaisemartin@suse.com> Signed-off-by: Bart Van Assche <bvanassche@acm.org> Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2021-05-21scsi: Fix spelling mistakes in header filesZhen Lei
Fix some spelling mistakes in comments: pathes ==> paths Resouce ==> Resource retreived ==> retrieved recevied ==> received interruped ==> interrupted [mkp: kept 'keep-alives' and 'busses'] Link: https://lore.kernel.org/r/20210517095945.7363-1-thunder.leizhen@huawei.com Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-15scsi: target: core: Add the VERSION DESCRIPTOR fields to the INQUIRY dataKonstantin Shelekhin
Extend the standard INQUIRY data to 96 bytes and fill in the VERSION DESCRIPTOR fields. The layout follows SPC-4: - SCSI architecture standard - SCSI transport protocol standard - SCSI primary command set standard - SCSI device type command set standard All version descriptor values are defined as "no version claimed" because some initiators fail to recognize anything else. [mkp: whitespace] Link: https://lore.kernel.org/r/20210513192804.1252142-3-k.shelekhin@yadro.com Reviewed-by: Roman Bolshakov <r.bolshakov@yadro.com> Signed-off-by: Konstantin Shelekhin <k.shelekhin@yadro.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-10scsi: core: Treat device offline as a failureJason Yan
When a SCSI device is offline a MODE SENSE command will return a result with only DID_NO_CONNECT set. In sd_read_write_protect_flag() only the status byte of the result is checked. Despite a returned status of DID_NO_CONNECT the command is considered successful and we read sdkp->write_prot from a buffer containing garbage. Modify scsi_status_is_good() to treat DID_NO_CONNECT as a failure case. Link: https://lore.kernel.org/r/20210330114727.234467-1-yanaijie@huawei.com Signed-off-by: Jason Yan <yanaijie@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-28Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds
Pull SCSI updates from James Bottomley: "This consists of the usual driver updates (ufs, target, tcmu, smartpqi, lpfc, zfcp, qla2xxx, mpt3sas, pm80xx). The major core change is using a sbitmap instead of an atomic for queue tracking" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (412 commits) scsi: target: tcm_fc: Fix a kernel-doc header scsi: target: Shorten ALUA error messages scsi: target: Fix two format specifiers scsi: target: Compare explicitly with SAM_STAT_GOOD scsi: sd: Introduce a new local variable in sd_check_events() scsi: dc395x: Open-code status_byte(u8) calls scsi: 53c700: Open-code status_byte(u8) calls scsi: smartpqi: Remove unused functions scsi: qla4xxx: Remove an unused function scsi: myrs: Remove unused functions scsi: myrb: Remove unused functions scsi: mpt3sas: Fix two kernel-doc headers scsi: fcoe: Suppress a compiler warning scsi: libfc: Fix a format specifier scsi: aacraid: Remove an unused function scsi: core: Introduce enum scsi_disposition scsi: core: Modify the scsi_send_eh_cmnd() return value for the SDEV_BLOCK case scsi: core: Rename scsi_softirq_done() into scsi_complete() scsi: core: Remove an incorrect comment scsi: core: Make the scsi_alloc_sgtables() documentation more accurate ...
2021-04-28Merge tag 'for-5.13/block-2021-04-27' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block updates from Jens Axboe: "Pretty quiet round this time, which is nice. In detail: - Series revamping bounce buffer support (Christoph) - Dead code removal (Christoph, Bart) - Partition iteration revamp, now using xarray (Christoph) - Passthrough request scheduler improvements (Lin) - Series of BFQ improvements (Paolo) - Fix ioprio task iteration (Peter) - Various little tweaks and fixes (Tejun, Saravanan, Bhaskar, Max, Nikolay)" * tag 'for-5.13/block-2021-04-27' of git://git.kernel.dk/linux-block: (41 commits) blk-iocost: don't ignore vrate_min on QD contention blk-mq: Fix spurious debugfs directory creation during initialization bfq/mq-deadline: remove redundant check for passthrough request blk-mq: bypass IO scheduler's limit_depth for passthrough request block: Remove an obsolete comment from sg_io() block: move bio_list_copy_data to pktcdvd block: remove zero_fill_bio_iter block: add queue_to_disk() to get gendisk from request_queue block: remove an incorrect check from blk_rq_append_bio block: initialize ret in bdev_disk_changed block: Fix sys_ioprio_set(.which=IOPRIO_WHO_PGRP) task iteration block: remove disk_part_iter block: simplify diskstats_show block: simplify show_partition block: simplify printk_all_partitions block: simplify partition_overlaps block: simplify partition removal block: take bd_mutex around delete_partitions in del_gendisk block: refactor blk_drop_partitions block: move more syncing and invalidation to delete_partition ...
2021-04-27Fix misc new gcc warningsLinus Torvalds
It seems like Fedora 34 ends up enabling a few new gcc warnings, notably "-Wstringop-overread" and "-Warray-parameter". Both of them cause what seem to be valid warnings in the kernel, where we have array size mismatches in function arguments (that are no longer just silently converted to a pointer to element, but actually checked). This fixes most of the trivial ones, by making the function declaration match the function definition, and in the case of intel_pm.c, removing the over-specified array size from the argument declaration. At least one 'stringop-overread' warning remains in the i915 driver, but that one doesn't have the same obvious trivial fix, and may or may not actually be indicative of a bug. [ It was a mistake to upgrade one of my machines to Fedora 34 while being busy with the merge window, but if this is the extent of the compiler upgrade problems, things are better than usual - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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