- 06 Apr, 2017 9 commits
-
-
Hannes Reinecke authored
If a failed command is retried and fails again we need to enter SCSI EH, otherwise we will never be able to recover the command. To detect this situation we must not clear scmd->eh_eflags when EH finishes but rather make it persistent throughout the lifetime of the command. Signed-off-by:
Hannes Reinecke <hare@suse.de> Reviewed-by:
Benjamin Block <bblock@linux.vnet.ibm.com> Reviewed-by:
Bart Van Assche <bart.vanassche@sandisk.com> Reviewed-by:
Johannes Thumshirn <jthumshirn@suse.de> Reviewed-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com>
-
Christoph Hellwig authored
We now first try to call ->eh_abort_handler from a work queue, but libsas was always failing that for no good reason. Allow async aborts. Reviewed-by:
Johannes Thumshirn <jth@kernel.org> Reviewed-by:
-
Hannes Reinecke authored
When a command has timed out we always should be sending an abort; with the previous code a failed abort might signal SCSI EH to start, and all other timed out commands will never be aborted, even though they might belong to a different ITL nexus. Cc: Benjamin Block <bblock@linux.vnet.ibm.com> Signed-off-by:
Hannes Reinecke <hare@suse.com> Reviewed-by:
-
Hannes Reinecke authored
If sd_eh_action() decides to take the device offline there is no point in returning FAILED, as taking the device offline is the ultimate step in SCSI EH anyway. So further escalation via SCSI EH is not likely to make a difference and we can as well return SUCCESS. Cc: Benjamin Block <bblock@linux.vnet.ibm.com> Signed-off-by:
-
Hannes Reinecke authored
The current medium access timeout counter will be increased for each command, so if there are enough failed commands we'll hit the medium access timeout for even a single device failure and the following kernel message is displayed: sd H:C:T:L: [sdXY] Medium access timeout failure. Offlining disk! Fix this by making the timeout per EH run, ie the counter will only be increased once per device and EH run. Fixes: 18a4d0a2 ("[SCSI] Handle disk devices which can not process medium access commands") Cc: Ewan Milne <emilne@redhat.com> Cc: Lawrence Obermann <loberman@redhat.com> Cc: Benjamin Block <bblock@linux.vnet.ibm.com> Cc: Steffen Maier <maier@linux.vnet.ibm.com> Signed-off-by:
-
Christoph Hellwig authored
And get automatic MSI-X affinity for free. Signed-off-by:
Varun Prakash <varun@chelsio.com> Signed-off-by:
-
Mauricio Faria de Oliveira authored
The commit 08024885 ("ses: Add power_status to SES device slot") introduced the 'power_status' attribute to enclosure components and the associated callbacks. There are 2 callbacks available to get the power status of a device: 1) ses_get_power_status() for 'struct enclosure_component_callbacks' 2) get_component_power_status() for the sysfs device attribute (these are available for kernel-space and user-space, respectively.) However, despite both methods being available to get power status on demand, that commit also introduced a call to get power status in ses_enclosure_data_process(). This dramatically increased the total probe time for SCSI devices on larger configurations, because ses_enclosure_data_process() is called several times during the SCSI devices probe and loops over the component devices (but that is another problem, another patch). That results in a tremendous continuous hammering of SCSI Receive Diagnostics commands to the enclosure-services device, which does delay the total probe time for the SCSI devices __significantly__: Originally, ~34 minutes on a system attached to ~170 disks: [ 9214.490703] mpt3sas version 13.100.00.00 loaded ... [11256.580231] scsi 17:0:177:0: qdepth(16), tagged(1), simple(0), ordered(0), scsi_level(6), cmd_que(1) With this patch, it decreased to ~2.5 minutes -- a 13.6x faster [ 1002.992533] mpt3sas version 13.100.00.00 loaded ... [ 1151.978831] scsi 11:0:177:0: qdepth(16), tagged(1), simple(0), ordered(0), scsi_level(6), cmd_que(1) Back to the commit discussion.. on the ses_get_power_status() call introduced in ses_enclosure_data_process(): impact of removing it. That may possibly be in place to initialize the power status value on device probe. However, those 2 functions available to retrieve that value _do_ automatically refresh/update it. So the potential benefit would be a direct access of the 'power_status' field which does not use the callbacks... But the only reader of 'struct enclosure_component::power_status' is the get_component_power_status() callback for sysfs attribute, and it _does_ check for and call the .get_power_status callback, (which indeed is defined and implemented by that commit), so the power status value is, again, automatically updated. So, the remaining potential for a direct/non-callback access to the power_status attribute would be out-of-tree modules -- well, for those, if they are for whatever reason interested in values that are set during device probe and not up-to-date by the time they need it.. well, that would be curious. Well, to handle that more properly, set the initial power state value to '-1' (i.e., uninitialized) instead of '1' (power 'on'), and check for it in that callback which may do an direct access to the field value _if_ a callback function is not defined. Signed-off-by:
Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com> Fixes: 08024885 ("ses: Add power_status to SES device slot") Reviewed-by:
Dan Williams <dan.j.williams@intel.com> Reviewed-by:
Song Liu <songliubraving@fb.com> Signed-off-by:
-
Bart Van Assche authored
Now that all scsi_device_get() callers check the return value of this function, make checking that return value mandatory. Signed-off-by:
-
Bart Van Assche authored
scsi_device_get() can fail. Hence check its return value. Signed-off-by:
Boaz Harrosh <ooo@electrozaur.com> Signed-off-by:
-
- 05 Apr, 2017 2 commits
-
-
Johannes Thumshirn authored
sas_domain_release_transport is unused since at least v3.13, remove it. Signed-off-by:
-
Milan P Gandhi authored
Signed-off-by:
Milan P Gandhi <mgandhi@redhat.com> Signed-off-by:
Himanshu Madhani <himanshu.madhani@cavium.com> Signed-off-by:
-
- 04 Apr, 2017 1 commit
-
-
Arnd Bergmann authored
gcc-7.0.1 now warns about a previously unnoticed access of uninitialized struct members: drivers/scsi/advansys.c: In function 'AscMsgOutSDTR': drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+5)' may be used uninitialized in this function [-Werror=maybe-uninitialized] ((ushort)s_buffer[i + 1] << 8) | s_buffer[i]); ^ drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+7)' may be used uninitialized in this function [-Werror=maybe-uninitialized] drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+5)' may be used uninitialized in this function [-Werror=maybe-uninitialized] drivers/scsi/advansys.c:3860:26: error: '*((void *)&sdtr_buf+7)' may be used uninitialized in this function [-Werror=maybe-uninitialized] The code has existed in this exact form at least since v2.6.12, and the warning seems correct. This uses named initializers to ensure we initialize all members of the structure. Signed-off-by:Arnd Bergmann <arnd@arndb.de> Signed-off-by:
-
- 30 Mar, 2017 12 commits
-
-
Christoph Hellwig authored
And get automatic MSI-X affinity for free. Signed-off-by:
Jitendra Bhivare <jitendra.bhivare@broadcom.com> Signed-off-by:
-
Szymon Mielczarek authored
This reverts commit 61e07359. The patch introduced redundant query retries as we already had such mechanism provided with _retry functions. Both ufshcd_read_desc and ufshcd_read_unit_desc_param functions call ufshcd_query_descriptor_retry wrapper. Signed-off-by:
Szymon Mielczarek <szymonx.mielczarek@intel.com> Reviewed-by:
Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by:
-
Don Brace authored
Reviewed-by:
Gerry Morong <gerry.morong@microsemi.com> Reviewed-by:
Scott Teel <scott.teel@microsemi.com> Signed-off-by:
Don Brace <don.brace@microsemi.com> Signed-off-by:
-
Don Brace authored
Reviewed-by:
-
Arnd Bergmann authored
Removing the 'select SCSI_SAS_LIBSAS' statement in Kconfig resulted in a link failure in configurations that have hisi_sas built-in but libsas as a loadable module: drivers/scsi/built-in.o: In function `hisi_sas_scan_finished': hisi_sas_main.c:(.text+0x37ce9): undefined reference to `sas_drain_work' drivers/scsi/built-in.o: In function `hisi_sas_slave_configure': hisi_sas_main.c:(.text+0x37d17): undefined reference to `sas_slave_configure' hisi_sas_main.c:(.text+0x37d40): undefined reference to `sas_change_queue_depth' drivers/scsi/built-in.o: In function `hisi_sas_remove': All other libsas users have the 'select' statement, so we should do the same here for consistency. For all I can tell, the patch that added the sata softreset does not actually introduce a dependency on SCSI_SAS_ATA but instead adds calls into libata itself, so we can express that with a more specific dependency. We cannot have 'select SCSI_SAS_LIBSAS; depends on SCSI_SAS_ATA' as that would cause a dependency loop. Fixes: 7c594f04 ("scsi: hisi_sas: add softreset function for SATA disk") Signed-off-by:
John Garry <john.garry@huawei.com> Signed-off-by:
-
Tomohiro Kusumi authored
Not much reason to use ARRAY_SIZE() when we know it's for a C string. Signed-off-by:
Tomohiro Kusumi <tkusumi@tuxera.com> Reviewed-by:
-
Tomohiro Kusumi authored
These flags are no longer needed after 2fbd009b in 2013. Signed-off-by:
-
Tomohiro Kusumi authored
Add macros for register bits that can be found in JESD223C (v2.1). Not all registers are defined in ufshci.h (i.e. some are unused whether macros are defined or undefined), but all the bits for those registers that are already defined should appear here. Signed-off-by:
-
Tomohiro Kusumi authored
Not having () isn't likely to do any harm in this case, but all the other macros below do have it. Also add "are" in a comment. Signed-off-by:
-
Tomohiro Kusumi authored
Signed-off-by:
-
Tomohiro Kusumi authored
ufshcd driver generally uses bool for is_xxx type things instead of int, so conform to its style. Signed-off-by:
-
Colin Ian King authored
It appears that a break in the TRANS_TX_OPEN_CNX_ERR_NO_DESTINATION case got accidentally removed in an earlier commit, as it stands, the ts->stat and ts->open_rej_reason are being updated twice for this case which looks incorrect. Fix this by adding in the missing break statement. Detected by CoverityScan, CID#1422110 ("Missing break in switch") Fixes: 634a9585 ("scsi: hisi_sas: process error codes according to their priority") Signed-off-by:Colin Ian King <colin.king@canonical.com> Acked-by:
-
- 28 Mar, 2017 13 commits
-
-
Jack Wang authored
The email address is undeliverable for some time now, so just remove it. Signed-off-by:
Jack Wang <jinpu.wang@profitbricks.com> Signed-off-by:
-
Jitendra Bhivare authored
Version 11.4.0.0 Signed-off-by:
Tomas Henzl <thenzl@redhat.com> Reviewed-by:
Chris Leech <cleech@redhat.com> Signed-off-by:
-
Jitendra Bhivare authored
Update Broadcom Copyright markings in all files. Signed-off-by:
-
Jitendra Bhivare authored
Data in buffers are gathered into a single buffer before giving to iSCSI layer. Though less likely to have payload more than 8K in ASYNC PDU, the data length is provide by FW and check is missing for overrun. Signed-off-by:
-
Jitendra Bhivare authored
With previous patch adding ASYNC Rx buffers to free_list is not required. Remove all free_list related operations. Add in_use to track if buffer posted is being processed by driver and purge all buffers received for connection if found so. Signed-off-by:
-
Jitendra Bhivare authored
FW runs out of buffer if buffers are not posted back soon. ASYNC Rx CQE indicates that FW has consumed 8 RQEs. Use it to post back buffers instead of waiting for buffers to be processed and freed by driver. Signed-off-by:
-
Jitendra Bhivare authored
Currently, ASYNC PDU default queue size is set to max connections. This leaves only one buffer per connection for any ASYNC PDUs from targets. Double the size of the default queue. Signed-off-by:
-
Jitendra Bhivare authored
scsi_flush_work flushes workqueue for the Scsi_Host. In iSCSI offload enabled host, this would wait for all other sessions under the host. Use flush_work for the session being removed instead. Signed-off-by:
-
Jitendra Bhivare authored
spin_unlock_bh back_lock is used in beiscsi_eh_device_reset instead of spin_lock. Signed-off-by:
-
Jitendra Bhivare authored
CID needs to be freed even when invalidate or upload connection fails. Attempt to close connection 3 times before freeing CID. Set cleanup_type to INVALIDATE instead of force TCP_RST. This unnecessarily is terminating connection with reset instead of gracefully closing it. Set save_cfg to 0 - session not to be saved on flash. Add delay and process CQ before uploading connection. Signed-off-by:
-
Jitendra Bhivare authored
scsi host12: BS_1377 : mgmt_invalidate_connection Failed for cid=256 BUG: unable to handle kernel NULL pointer dereference at 0000000000000008 IP: [<ffffffff81332ebf>] __list_add+0xf/0xc0 PGD 0 Oops: 0000 [#1] SMP Modules linked in: ... CPU: 9 PID: 1542 Comm: iscsid Tainted: G ------------ T 3.10.0-514.el7.x86_64 #1 Hardware name: HP ProLiant DL360 Gen9/ProLiant DL360 Gen9, BIOS P89 09/12/2016 task: ffff88076f310fb0 ti: ffff88076bba8000 task.ti: ffff88076bba8000 RIP: 0010:[<ffffffff81332ebf>] [<ffffffff81332ebf>] __list_add+0xf/0xc0 RSP: 0018:ffff88076bbab8e8 EFLAGS: 00010046 RAX: 0000000000000246 RBX: ffff88076bbab990 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff880468badf58 RDI: ffff88076bbab990 RBP: ffff88076bbab900 R08: 0000000000000246 R09: 00000000000020de R10: 0000000000000000 R11: ffff88076bbab5be R12: 0000000000000000 R13: ffff880468badf58 R14: 000000000001adb0 R15: ffff88076f310fb0 FS: 00007f377124a880(0000) GS:ffff88046fa40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000008 CR3: 0000000771318000 CR4: 00000000001407e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Stack: ffff88076bbab990 ffff880468badf50 0000000000000001 ffff88076bbab938 ffffffff810b128b 0000000000000246 00000000cf9b7040 ffff880468bac7a0 0000000000000000 ffff880468bac7a0 ffff88076bbab9d0 ffffffffa05a6ea3 Call Trace: [<ffffffff810b128b>] prepare_to_wait+0x7b/0x90 [<ffffffffa05a6ea3>] beiscsi_mccq_compl_wait+0x153/0x330 [be2iscsi] [<ffffffff810b1600>] ? wake_up_atomic_t+0x30/0x30 [<ffffffffa05981b1>] beiscsi_ep_disconnect+0x91/0x2d0 [be2iscsi] [<ffffffffa0202ffa>] iscsi_if_ep_disconnect.isra.14+0x5a/0x70 [scsi_transport_iscsi] [<ffffffffa02042fb>] iscsi_if_recv_msg+0x113b/0x14a0 [scsi_transport_iscsi] [<ffffffff811dffd8>] ? __kmalloc_node_track_caller+0x58/0x290 [<ffffffffa02046ee>] iscsi_if_rx+0x8e/0x1f0 [scsi_transport_iscsi] [<ffffffff815a351d>] netlink_unicast+0xed/0x1b0 [<ffffffff815a38fe>] netlink_sendmsg+0x31e/0x690 [<ffffffff815a03e4>] ? netlink_rcv_wake+0x44/0x60 [<ffffffff815a19e3>] ? netlink_recvmsg+0x1e3/0x450 beiscsi_mccq_compl_wait gets called even when MCC tag allocation failed for mgmt_invalidate_connection. mcc_wait is not initialized for tag 0 so causes crash in prepare_to_wait. Signed-off-by:
-
Tomohiro Kusumi authored
These aren't really falling through to anywhere meaningful. Signed-off-by:
-
Dan Carpenter authored
We don't call the remove() function unless probe() succeeds so "oud" can't be NULL here. Plus, if it were NULL, we dereference it on the next line so it would crash anyway. [mkp: applied by hand] Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Acked-by:
-
- 23 Mar, 2017 3 commits
-
-
Brian King authored
Bump driver version Signed-off-by:
Brian King <brking@linux.vnet.ibm.com> Reviewed-by:
Wendy Xiong <wenxiong@linux.vnet.ibm.com> Tested-by:
-
Brian King authored
This patch fixes a hang that can occur in ATA EH with ipr. With ipr's usage of libata, commands should never end up on ap->eh_done_q. The timeout function we use for ipr, even for SATA devices, is scsi_times_out, so ATA_QCFLAG_EH_SCHEDULED never gets set for ipr and EH is driven completely by ipr and SCSI. The SCSI EH thread ends up calling ipr's eh_device_reset_handler, which then calls ata_std_error_handler. This ends up calling ipr_sata_reset, which issues a reset to the device. This should result in all pending commands getting failed back and having ata_qc_complete called for them, which should end up clearing ATA_QCFLAG_FAILED as qc->flags gets zeroed in ata_qc_free. This ensures that when we end up in ata_eh_finish, we don't do anything more with the command. On adapters that only support a single interrupt and when running with two MSI-X vectors or less, the adapter firmware guarantees that responses to all outstanding commands are sent back prior to sending the response to the SATA reset command. On newer adapters supporting multiple HRRQs, however, this can no longer be guaranteed, since the command responses and reset response may be processed on different HRRQs. If ipr returns from ipr_sata_reset before the outstanding command was returned, this sends us down the path of __ata_eh_qc_complete which then moves the associated scsi_cmd from the work_q in scsi_eh_bus_device_reset to ap->eh_done_q, which then will sit there forever and we will be wedged. This patch fixes this up by ensuring that any outstanding commands are flushed before returning from eh_device_reset_handler for a SATA device. Reported-by:
David Jeffery <djeffery@redhat.com> Signed-off-by:
-
Brian King authored
This patch closes up some potential race conditions observed in the error handling paths in ipr while debugging an issue resulting in a hang with SATA error handling. These patches ensure we are holding the correct lock when adding and removing commands from the free and pending queues in some error scenarios. Signed-off-by:
-
