- 08 Dec, 2018 19 commits
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Thomas Meyer authored
NULL check before some freeing functions is not needed. Signed-off-by:
Thomas Meyer <thomas@m3y3r.de> Acked-by:
Manish Rangankar <Manish.Rangankar@cavium.com> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
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Thomas Meyer authored
NULL check before some freeing functions is not needed. Signed-off-by:
Sumit Saxena <sumit.saxena@broadcom.com> Signed-off-by:
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Bart Van Assche authored
Nesting in __qla2x00_abort_all_cmds() is way too deep. Reduce the nesting level by introducing a helper function. This patch does not change any functionality. Reviewed-by:
Laurence Oberman <loberman@redhat.com> Acked-by:
Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by:
Bart Van Assche <bvanassche@acm.org> Signed-off-by:
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Varun Prakash authored
flush_scheduled_work() is not required as csio_hw_exit_workers() calls cancel_work_sync() for hw->evtq_work. Signed-off-by:
Varun Prakash <varun@chelsio.com> Signed-off-by:
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Fedor Loshakov authored
Introduce separate zfcp module parameters to individually select support for: DIF which should work (zfcp.dif, which used to be DIF+DIX, disabled) or DIX+DIF which can cause trouble (zfcp.dix, new, disabled). If DIX is enabled, we warn on zfcp driver initialization. As before, this also reduces the maximum I/O request size to half, to support the worst case of merged single sector requests with one protection data scatter gather element per sector. This can impact the maximum throughput. In DIF-only mode (zfcp.dif=1 zfcp.dix=0), we can use the full maximum I/O request size as there is no protection data for zfcp. Signed-off-by:
Steffen Maier <maier@linux.ibm.com> Signed-off-by:
Fedor Loshakov <loshakov@linux.ibm.com> Reviewed-by:
Jens Remus <jremus@linux.ibm.com> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Addresses-Coverity-ID: 1056537 ("Missing break in switch") Signed-off-by:Gustavo A. R. Silva <gustavo@embeddedor.com> Acked-by:
Khalid Aziz <khalid@gonehiking.org> Signed-off-by:
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Avri Altman authored
By spec, the ufs sense data is 18 bytes long. Signed-off-by:
Avri Altman <avri.altman@wdc.com> Signed-off-by:
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Sabyasachi Gupta authored
Replaced vmalloc + memset with vzalloc Signed-off-by:
Sabyasachi Gupta <sabyasachi.linux@gmail.com> Acked-by:
Sesidhar Baddela <sebaddel@cisco.com> Signed-off-by:
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Sabyasachi Gupta authored
Replaced vmalloc + memset with vzalloc Signed-off-by:
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Bart Van Assche authored
Due to the "make ABORT and LUN RESET handling synchronous" patch, cmd->work is only modified from the regular command execution path and no longer asynchronously by the code that executes task management functions. Since the regular command execution code is sequential per command, no locking is required to manipulate cmd->work. Hence stop protecting cmd->work manipulations with locking. Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: David Disseldorp <ddiss@suse.de> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by:
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Bart Van Assche authored
Instead of invoking target driver callback functions from the context that handles an abort or LUN RESET task management function, only set the abort flag from that context and perform the actual abort handling from the context of the regular command processing flow. This approach has the advantage that the task management code becomes much easier to read and to verify since the number of potential race conditions against the command processing flow is strongly reduced. This patch has been tested by running the following two shell commands concurrently for about ten minutes for both the iSCSI and the SRP target drivers ($dev is an initiator device node connected with storage provided by the target driver under test): * fio with data verification enabled on a filesystem mounted on top of $dev. * while true; do sg_reset -d $dev; echo -n .; sleep .1; done Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: David Disseldorp <ddiss@suse.de> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by:
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Bart Van Assche authored
The TASK ABORTED STATUS (TAS) bit is defined as follows in SAM: "TASK_ABORTED: this status shall be returned if a command is aborted by a command or task management function on another I_T nexus and the control mode page TAS bit is set to one". TAS handling is spread over the target core and the iSCSI target driver. If a LUN RESET is received, the target core will send the TASK_ABORTED response for all commands for which such a response has to be sent. If an ABORT TASK is received, only the iSCSI target driver will send the TASK_ABORTED response for the commands for which that response has to be sent. That is a bug since all target drivers have to honor the TAS bit. Fix this by moving the code that handles TAS from the iSCSI target driver into the target core. Additionally, if a command has been aborted, instead of sending the TASK_ABORTED status from the context that processes the SCSI command send it from the context of the ABORT TMF. The core_tmr_abort_task() change in this patch causes the CMD_T_TAS flag to be set if a TASK_ABORTED status has to be sent back to the initiator that submitted the command. If that flag has been set transport_cmd_finish_abort() will send the TASK_ABORTED response. Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: David Disseldorp <ddiss@suse.de> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by:
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Bart Van Assche authored
Instead of allowing the code that aborts a SCSI command to finish before all iSCSI data frames have been received, make that code wait until all iSCSI data frames have been received. Introduce a new member variable in the target driver template to communicate that information from the iSCSI target driver to the target core. This change allows to leave out the check whether or not it is already safe to send the TASK_ABORTED reply from transport_send_task_abort(). Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: David Disseldorp <ddiss@suse.de> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by:
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Bart Van Assche authored
This patch does not change any functionality but makes the patch that makes TMF handling synchronous easier to read. Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: David Disseldorp <ddiss@suse.de> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by:
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Bart Van Assche authored
A quote from SAM-5: "The order in which task management requests are processed is not specified by the SCSI architecture model. The SCSI architecture model does not require in-order delivery of such task management requests or processing by the task manager in the order received. To guarantee the processing order of task management requests referencing sent to a specific logical unit, an application client should not have more than one such task management request pending to that logical unit." This means that it is safe to use the system workqueues instead of tmr_wq for processing TMFs. An intended side effect of this patch is that it enables concurrent processing of TMFs. Reviewed-by:
Christoph Hellwig <hch@lst.de> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: David Disseldorp <ddiss@suse.de> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by:
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Bart Van Assche authored
A session must only be released after all code that accesses the session structure has finished. Make sure that this is the case by introducing a new command counter per session that is only decremented after the .release_cmd() callback has finished. This patch fixes the following crash: BUG: KASAN: use-after-free in do_raw_spin_lock+0x1c/0x130 Read of size 4 at addr ffff8801534b16e4 by task rmdir/14805 CPU: 16 PID: 14805 Comm: rmdir Not tainted 4.18.0-rc2-dbg+ #5 Call Trace: dump_stack+0xa4/0xf5 print_address_description+0x6f/0x270 kasan_report+0x241/0x360 __asan_load4+0x78/0x80 do_raw_spin_lock+0x1c/0x130 _raw_spin_lock_irqsave+0x52/0x60 srpt_set_ch_state+0x27/0x70 [ib_srpt] srpt_disconnect_ch+0x1b/0xc0 [ib_srpt] srpt_close_session+0xa8/0x260 [ib_srpt] target_shutdown_sessions+0x170/0x180 [target_core_mod] core_tpg_del_initiator_node_acl+0xf3/0x200 [target_core_mod] target_fabric_nacl_base_release+0x25/0x30 [target_core_mod] config_item_release+0x9c/0x110 [configfs] config_item_put+0x26/0x30 [configfs] configfs_rmdir+0x3b8/0x510 [configfs] vfs_rmdir+0xb3/0x1e0 do_rmdir+0x262/0x2c0 do_syscall_64+0x77/0x230 entry_SYSCALL_64_after_hwframe+0x49/0xbe Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: David Disseldorp <ddiss@suse.de> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by:
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Bart Van Assche authored
Since transport_clear_lun_ref() already waits until the percpu-refcount .release() method is called, it is not necessary to wait first until percpu_ref_kill_and_confirm() has finished transitioning the refcount into atomic mode. Remove the code that waits for percpu_ref_kill_and_confirm() to complete and also the completion object that is used by that code. This patch does not change the behavior of the SCSI target code. Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: David Disseldorp <ddiss@suse.de> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by:
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Bart Van Assche authored
This patch does not change any functionality. Note: the code that frees sess_cmd_map already uses kvfree() so that code does not need to be modified. Reviewed-by:
David Disseldorp <ddiss@suse.de> Cc: Nicholas Bellinger <nab@linux-iscsi.org> Cc: Mike Christie <mchristi@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Hannes Reinecke <hare@suse.de> Signed-off-by:
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Bart Van Assche authored
This patch does not change any functionality but avoids that sparse complains about the queue_cmd_ring() function and its callers. Fixes: 6fd0ce79 ("tcmu: prep queue_cmd_ring to be used by unmap wq") Reviewed-by:
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- 29 Nov, 2018 19 commits
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that, in this particular case, I replaced "Missed the backend's Closing state -- fallthrough" with "fall through - Missed the backend's Closing state", which contains the "fall through" annotation at the beginnig of the code comment, which is what GCC is expecting to find. Signed-off-by:
Juergen Gross <jgross@suse.com> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Notice that, in this particular case, I replaced "Fall thru" with a "Fall through" annotation and added a dash as a token in order to separate the "Fall through" annotation from the rest of the comment on the same line, which is what GCC is expecting to find. Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by:
Johannes Thumshirn <jth@kernel.org> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Addresses-Coverity-ID: 1195463 ("Missing break in switch") Addresses-Coverity-ID: 1195464 ("Missing break in switch") Addresses-Coverity-ID: 1195465 ("Missing break in switch") Addresses-Coverity-ID: 1195466 ("Missing break in switch") Addresses-Coverity-ID: 1357338 ("Missing break in switch") Signed-off-by:Don Brace <don.brace@microsemi.com> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by:
Dave Carroll <david.carroll@microsemi.com> Signed-off-by:
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Gustavo A. R. Silva authored
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Also, a break statement is properly aligned. Signed-off-by:
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Bart Van Assche authored
This patch improves code readability but does not change any functionality. Cc: Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by:
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Colin Ian King authored
There is a spelling mistake in some description text, fix it. Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Tomas Winkler authored
Add /* fallthrough */ annotation, to eliminate compilation warning: warning: this statement may fall through [-Wimplicit-fallthrough=] Signed-off-by:
Tomas Winkler <tomas.winkler@intel.com> Reviewed-by:
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Nilesh Javali authored
Signed-off-by:
Nilesh Javali <nilesh.javali@cavium.com> Signed-off-by:
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Manish Rangankar authored
1. Removed logic to update HW producer index in interrupt context. 2. Update HW producer index after UIO ring and buffer gets initialized. Signed-off-by:
Lee Duncan <lduncan@suse.com> Signed-off-by:
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Nilesh Javali authored
Default packet size is 0x400. For jumbo packets set to 0x2400. Signed-off-by:
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Manish Rangankar authored
Add packet filter to avoid unnecessary packet processing in iscsiuio. Signed-off-by:
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Manish Rangankar authored
The kernel panic was observed after switch side perturbation, BUG: unable to handle kernel NULL pointer dereference at (null) IP: [<ffffffff8132b5a0>] strcmp+0x20/0x40 PGD 0 Oops: 0000 [#1] SMP CPU: 8 PID: 647 Comm: kworker/8:1 Tainted: G W OE ------------ 3.10.0-693.el7.x86_64 #1 Hardware name: HPE ProLiant DL380 Gen10/ProLiant DL380 Gen10, BIOS U30 06/20/2018 Workqueue: slowpath-13:00. qed_slowpath_task [qed] task: ffff880429eb8fd0 ti: ffff880429190000 task.ti: ffff880429190000 RIP: 0010:[<ffffffff8132b5a0>] [<ffffffff8132b5a0>] strcmp+0x20/0x40 RSP: 0018:ffff880429193c68 EFLAGS: 00010202 RAX: 000000000000000a RBX: 0000000000000002 RCX: 0000000000000000 RDX: 0000000000000001 RSI: 0000000000000001 RDI: ffff88042bda7a41 RBP: ffff880429193c68 R08: 000000000000ffff R09: 000000000000ffff R10: 0000000000000007 R11: ffff88042b3af338 R12: ffff880420b007a0 R13: ffff88081aa56af8 R14: 0000000000000001 R15: ffff88081aa50410 FS: 0000000000000000(0000) GS:ffff88042fe00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000019f2000 CR4: 00000000003407e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Stack: ffff880429193d20 ffffffffc02a0c90 ffffc90004b32000 ffff8803fd3ec600 ffff88042bda7800 ffff88042bda7a00 ffff88042bda7840 ffff88042bda7a40 0000000129193d10 2e3836312e323931 ff000a342e363232 ffffffffc01ad99d Call Trace: [<ffffffffc02a0c90>] qedi_get_protocol_tlv_data+0x270/0x470 [qedi] [<ffffffffc01ad99d>] ? qed_mfw_process_tlv_req+0x24d/0xbf0 [qed] [<ffffffffc01653ae>] qed_mfw_fill_tlv_data+0x5e/0xd0 [qed] [<ffffffffc01ad9b9>] qed_mfw_process_tlv_req+0x269/0xbf0 [qed] Fix kernel NULL pointer deref by checking for session is online before getting iSCSI TLV data. Signed-off-by: -
Nilesh Javali authored
The driver load on some systems failed with error, [0004:01:00.5]:[qedi_request_msix_irq:2524]:8: request_irq failed. Allocate the IRQs based on MSIX count obtained from qed module instead of number of queues. Signed-off-by:
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Nilesh Javali authored
Use QEDI_PAGE_SIZE for enablement of module on systems with 64K page size. Signed-off-by:
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Nilesh Javali authored
Fix trivial spelling mistake within macro definition. Signed-off-by:
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Nilesh Javali authored
Remove redundant macro definition. Signed-off-by:
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- 28 Nov, 2018 2 commits
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David Disseldorp authored
iscsi_target_mod is the only LIO fabric where fabric_ops.name differs from the fabric_ops.fabric_name string. fabric_ops.name is used when matching target/$fabric ConfigFS create paths, so rename it .fabric_alias and fallback to target/$fabric vs .fabric_name comparison if .fabric_alias isn't initialised. iscsi_target_mod is the only fabric module to set .fabric_alias . All other fabric modules rely on .fabric_name matching and can drop the duplicate string. Signed-off-by:
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David Disseldorp authored
All fabrics return a const string. In all cases *except* iSCSI the get_fabric_name() string matches fabric_ops.name. Both fabric_ops.get_fabric_name() and fabric_ops.name are user-facing, with the former being used for PR/ALUA state and the latter for ConfigFS (config/target/$name), so we unfortunately need to keep both strings around for now. Replace the useless .get_fabric_name() accessor function with a const string fabric_name member variable. Signed-off-by:
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