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2021-06-29scsi: qedf: Add check to synchronize abort and flushJaved Hasan1-1/+21
A race condition was observed between qedf_cleanup_fcport() and qedf_process_error_detect()->qedf_initiate_abts(): [2069091.203145] BUG: unable to handle kernel NULL pointer dereference at 0000000000000030 [2069091.213100] IP: [<ffffffffc0666cc6>] qedf_process_error_detect+0x96/0x130 [qedf] [2069091.223391] PGD 1943049067 PUD 194304e067 PMD 0 [2069091.233420] Oops: 0000 [#1] SMP [2069091.361820] CPU: 1 PID: 14751 Comm: kworker/1:46 Kdump: loaded Tainted: P OE ------------ 3.10.0-1160.25.1.el7.x86_64 #1 [2069091.388474] Hardware name: HPE Synergy 480 Gen10/Synergy 480 Gen10 Compute Module, BIOS I42 04/08/2020 [2069091.402148] Workqueue: qedf_io_wq qedf_fp_io_handler [qedf] [2069091.415780] task: ffff9bb9f5190000 ti: ffff9bacaef9c000 task.ti: ffff9bacaef9c000 [2069091.429590] RIP: 0010:[<ffffffffc0666cc6>] [<ffffffffc0666cc6>] qedf_process_error_detect+0x96/0x130 [qedf] [2069091.443666] RSP: 0018:ffff9bacaef9fdb8 EFLAGS: 00010246 [2069091.457692] RAX: 0000000000000000 RBX: ffff9bbbbbfb18a0 RCX: ffffffffc0672310 [2069091.471997] RDX: 00000000000005de RSI: ffffffffc066e7f0 RDI: ffff9beb3f4538d8 [2069091.486130] RBP: ffff9bacaef9fdd8 R08: 0000000000006000 R09: 0000000000006000 [2069091.500321] R10: 0000000000001551 R11: ffffb582996ffff8 R12: ffffb5829b39cc18 [2069091.514779] R13: ffff9badab380c28 R14: ffffd5827f643900 R15: 0000000000000040 [2069091.529472] FS: 0000000000000000(0000) GS:ffff9beb3f440000(0000) knlGS:0000000000000000 [2069091.543926] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [2069091.558942] CR2: 0000000000000030 CR3: 000000193b9a2000 CR4: 00000000007607e0 [2069091.573424] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [2069091.587876] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [2069091.602007] PKRU: 00000000 [2069091.616010] Call Trace: [2069091.629902] [<ffffffffc0663969>] qedf_process_cqe+0x109/0x2e0 [qedf] [2069091.643941] [<ffffffffc0663b66>] qedf_fp_io_handler+0x26/0x60 [qedf] [2069091.657948] [<ffffffff85ebddcf>] process_one_work+0x17f/0x440 [2069091.672111] [<ffffffff85ebeee6>] worker_thread+0x126/0x3c0 [2069091.686057] [<ffffffff85ebedc0>] ? manage_workers.isra.26+0x2a0/0x2a0 [2069091.700033] [<ffffffff85ec5da1>] kthread+0xd1/0xe0 [2069091.713891] [<ffffffff85ec5cd0>] ? insert_kthread_work+0x40/0x40 Add check in qedf_process_error_detect(). When flush is active, let the cmds be completed from the cleanup contex. Link: https://lore.kernel.org/r/20210624171802.598-1-jhasan@marvell.com Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-23scsi: qedf: Use DEVICE_ATTR_RO() macroZhen Lei1-8/+6
Use DEVICE_ATTR_RO() macro helper instead of plain DEVICE_ATTR(), which makes the code a bit shorter and easier to read. Link: https://lore.kernel.org/r/20210616034419.725-3-thunder.leizhen@huawei.com Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-10scsi: qedf: Add vendor identifier attributeJaved Hasan1-0/+3
Link: https://lore.kernel.org/r/20210603121623.10084-3-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>
2021-06-08scsi: qedf: Update the max_id value in host structureSaurav Kashyap1-0/+2
host->max_id defines the maximum target id that the SCSI midlayer will attempt to manually scan. The default is 8. Update the value to the max sessions the driver supports. [mkp: applied by hand] Link: https://lore.kernel.org/r/20210602104653.17278-1-jhasan@marvell.com Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-06-02scsi: qedf: Do not put host in qedf_vport_create() unconditionallyDaniel Wagner1-11/+9
Do not drop reference count on vn_port->host in qedf_vport_create() unconditionally. Instead drop the reference count in qedf_vport_destroy(). Link: https://lore.kernel.org/r/20210521143440.84816-1-dwagner@suse.de Reported-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-21scsi: qedf: Use vzalloc() instead of vmalloc()/memset(0)Yang Yingliang1-2/+1
Use vzalloc() instead of vmalloc() and memset(0) to simpify the code. Link: https://lore.kernel.org/r/20210518132018.1312995-1-yangyingliang@huawei.com Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Yang Yingliang <yangyingliang@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-05-15scsi: qedf: Add pointer checks in qedf_update_link_speed()Javed Hasan1-1/+3
The following trace was observed: [ 14.042059] Call Trace: [ 14.042061] <IRQ> [ 14.042068] qedf_link_update+0x144/0x1f0 [qedf] [ 14.042117] qed_link_update+0x5c/0x80 [qed] [ 14.042135] qed_mcp_handle_link_change+0x2d2/0x410 [qed] [ 14.042155] ? qed_set_ptt+0x70/0x80 [qed] [ 14.042170] ? qed_set_ptt+0x70/0x80 [qed] [ 14.042186] ? qed_rd+0x13/0x40 [qed] [ 14.042205] qed_mcp_handle_events+0x437/0x690 [qed] [ 14.042221] ? qed_set_ptt+0x70/0x80 [qed] [ 14.042239] qed_int_sp_dpc+0x3a6/0x3e0 [qed] [ 14.042245] tasklet_action_common.isra.14+0x5a/0x100 [ 14.042250] __do_softirq+0xe4/0x2f8 [ 14.042253] irq_exit+0xf7/0x100 [ 14.042255] do_IRQ+0x7f/0xd0 [ 14.042257] common_interrupt+0xf/0xf [ 14.042259] </IRQ> API qedf_link_update() is getting called from QED but by that time shost_data is not initialised. This results in a NULL pointer dereference when we try to dereference shost_data while updating supported_speeds. Add a NULL pointer check before dereferencing shost_data. Link: https://lore.kernel.org/r/20210512072533.23618-1-jhasan@marvell.com Fixes: 61d8658b4a43 ("scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.") 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>
2021-05-15scsi: qedf: Drop unnecessary NULL checks after container_of()Guenter Roeck2-9/+0
The result of container_of() operations is never NULL unless the embedded element is the first element of the structure, which is not the case here. The NULL checks are therefore unnecessary and misleading. Remove them. The changes in this patch were made automatically using the following Coccinelle script. @@ type t; identifier v; statement s; @@ <+... ( t v = container_of(...); | v = container_of(...); ) ... when != v - if (\( !v \| v == NULL \) ) s ...+> Link: https://lore.kernel.org/r/20210510041211.2051325-1-linux@roeck-us.net Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-13scsi: qedf: Use devlink to report errors and recoveryJaved Hasan1-2/+3
Use devlink_health_report() to push error indications. Implement this in qede via a callback function to make it possible to reuse it for other drivers sitting on top of qed in future. Also remove forcible recovery trigger and put it as a normal devlink callback in qed module. This allows user to enable/disable it via: devlink health set pci/xxxx:xx:xx.x reporter fw_fatal auto_recover false Link: https://lore.kernel.org/r/20210331164917.24662-3-jhasan@marvell.com Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-13scsi: qedf: Enable devlink supportJaved Hasan2-0/+14
Devlink instance lifetime was linked to qed_dev object. That caused devlink to be recreated on each recovery. Change it by making higher level driver (qede) responsible for lifetime management. This way devlink survives recoveries. qede now stores devlink structure pointer as a part of its device object, devlink private data contains a linkage structure, qed_devlink. Link: https://lore.kernel.org/r/20210331164917.24662-2-jhasan@marvell.com Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-04-06scsi: qedf: Remove unused include of linux/version.hTian Tao2-3/+0
Remove unnecessary include of linux/version.h. Link: https://lore.kernel.org/r/1617283618-19346-1-git-send-email-tiantao6@hisilicon.com Signed-off-by: Tian Tao <tiantao6@hisilicon.com> Signed-off-by: Zhiqi Song <songzhiqi1@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2021-01-13scsi: qedf: Simplify bool comparisonYANG LI1-1/+1
Fix the following coccicheck warning: ./drivers/scsi/qedf/qedf_main.c:3716:5-31: WARNING: Comparison to bool Link: https://lore.kernel.org/r/1610357368-62866-1-git-send-email-abaci-bugfix@linux.alibaba.com Reported-by: Abaci Robot <abaci@linux.alibaba.com> Acked-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: YANG LI <abaci-bugfix@linux.alibaba.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-10-30scsi: libfc: Move scsi/fc_encode.h to libfcArnd Bergmann1-1/+0
Most of this file is only used inside of libfc, so move it to where it is actually used, with only fc_fill_fc_hdr() left inside of the header. Link: https://lore.kernel.org/r/20201026160705.3706396-1-arnd@kernel.org Reported-by: kernel test robot <lkp@intel.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-10-03scsi: qedf: Remove redundant assignment to variable 'rc'Jing Xiangfeng1-1/+0
This assignment is meaningless. Remove it. Link: https://lore.kernel.org/r/20200917021906.175933-1-jingxiangfeng@huawei.com Signed-off-by: Jing Xiangfeng <jingxiangfeng@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-09-15Merge branch '5.9/scsi-fixes' into 5.10/scsi-ufsMartin K. Petersen1-1/+1
Resolve UFS discrepancies between fixes and queue. Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-09-09scsi: qedf: Retry qed->probe during recoverySaurav Kashyap1-0/+11
During recovery due to FCoE fn ramrod failure we wait for 2 sec and then call qed->probe. If probe fails then retry max 10 times. Link: https://lore.kernel.org/r/20200907121443.5150-8-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-09-09scsi: qedf: Add schedule_hw_err_handler callback for fan failureSaurav Kashyap2-0/+49
On fan failure, disable the PCI function and initiate recovery for ramrod failure. Link: https://lore.kernel.org/r/20200907121443.5150-7-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-09-09scsi: qedf: Return SUCCESS if stale rport is encounteredSaurav Kashyap1-1/+1
If SUCCESS is not returned, error handling will escalate. Return SUCCESS similar to other conditions in this function. Link: https://lore.kernel.org/r/20200907121443.5150-6-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-09-09scsi: qedf: FDMI attributes correctionJaved Hasan2-25/+58
Correction in the FDMI attributes required for RHBA and RPA registration. Link: https://lore.kernel.org/r/20200907121443.5150-5-jhasan@marvell.com Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-09-09scsi: qedf: Fix for the session’s E_D_TOV valueJaved Hasan1-1/+1
Firmware expects E_D_TOV field in connection offload parameters as “msec”. Earlier incorrect value (100ms), was leading to abort from driver in the case when data frames for read take more than 100ms from target side, resulting in firmware reporting E_D_TOV expiration. Link: https://lore.kernel.org/r/20200907121443.5150-4-jhasan@marvell.com Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-09-09scsi: qedf: Correct the comment in qedf_initiate_elsSaurav Kashyap1-1/+1
Correct the misleading comment in qedf_initiate_els(). Link: https://lore.kernel.org/r/20200907121443.5150-3-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-09-09scsi: qedf: Change the debug parameter permission to read & writeJaved Hasan1-1/+1
Change the debug parameter permission to read & write. Gives flexibility to change the debug verbosity dynamically. Link: https://lore.kernel.org/r/20200907121443.5150-2-jhasan@marvell.com Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-25scsi: qedf: Fix null ptr reference in qedf_stag_change_workYe Bin1-1/+1
Link: https://lore.kernel.org/r/20200824033436.45570-1-yebin10@huawei.com Acked-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Ye Bin <yebin10@huawei.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-21scsi: qedf: Fix race between ELS completion and flushing ELS requestSaurav Kashyap2-0/+16
Fix race between ELS completion and flushing ELS request. Link: https://lore.kernel.org/r/20200807110656.19965-8-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-21scsi: qedf: Don't process ELS completion if event is flushed or cleaned upSaurav Kashyap1-0/+9
Don't process ELS completion if event is flushed or cleaned up. Link: https://lore.kernel.org/r/20200807110656.19965-7-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-21scsi: qedf: Initiate cleanup for ELS commands as wellSaurav Kashyap1-0/+7
Initiate cleanup for ELS commands as well. Link: https://lore.kernel.org/r/20200807110656.19965-6-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-21scsi: qedf: Send cleanup even for RRQ on timeoutSaurav Kashyap1-1/+1
Send cleanup even for RRQ on timeout. Link: https://lore.kernel.org/r/20200807110656.19965-5-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-21scsi: qedf: Do not kill timeout work for original I/O on RRQ completionSaurav Kashyap1-4/+0
The timer is already cancelled when abort is completed, hence no need to cancel it again. Link: https://lore.kernel.org/r/20200807110656.19965-4-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-21scsi: qedf: Check the validity of rjt frame before processingSaurav Kashyap1-0/+5
This is reported by Klockwork. Link: https://lore.kernel.org/r/20200807110656.19965-3-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-21scsi: qedf: Check for port type and role before processing an eventSaurav Kashyap1-0/+11
The rport lock gets initialized during offload. If a non-FCP or non-target rport got logout then this rport will be uninitialized. KASAN was complaining because of it. ========= [ 14.384434] the code is fine but needs lockdep annotation. [ 14.384482] turning off the locking correctness validator. ======== Link: https://lore.kernel.org/r/20200807110656.19965-2-jhasan@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-08-07Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds3-42/+16
Pull SCSI updates from James Bottomley: "This consists of the usual driver updates (ufs, qla2xxx, tcmu, lpfc, hpsa, zfcp, scsi_debug) and minor bug fixes. We also have a huge docbook fix update like most other subsystems and no major update to the core (the few non trivial updates are either minor fixes or removing an unused feature [scsi_sdb_cache])" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (307 commits) scsi: scsi_transport_srp: Sanitize scsi_target_block/unblock sequences scsi: ufs-mediatek: Apply DELAY_AFTER_LPM quirk to Micron devices scsi: ufs: Introduce device quirk "DELAY_AFTER_LPM" scsi: virtio-scsi: Correctly handle the case where all LUNs are unplugged scsi: scsi_debug: Implement tur_ms_to_ready parameter scsi: scsi_debug: Fix request sense scsi: lpfc: Fix typo in comment for ULP scsi: ufs-mediatek: Prevent LPM operation on undeclared VCC scsi: iscsi: Do not put host in iscsi_set_flashnode_param() scsi: hpsa: Correct ctrl queue depth scsi: target: tcmu: Make TMR notification optional scsi: target: tcmu: Implement tmr_notify callback scsi: target: tcmu: Fix and simplify timeout handling scsi: target: tcmu: Factor out new helper ring_insert_padding scsi: target: tcmu: Do not queue aborted commands scsi: target: tcmu: Use priv pointer in se_cmd scsi: target: Add tmr_notify backend function scsi: target: Modify core_tmr_abort_task() scsi: target: iscsi: Fix inconsistent debug message scsi: target: iscsi: Fix login error when receiving ...
2020-07-21qed, qede, qedf: convert link mode from u32 to ETHTOOL_LINK_MODEAlexander Lobakin1-28/+50
Currently qed driver already ran out of 32 bits to store link modes, and this doesn't allow to add and support more speeds. Convert custom link mode to generic Ethtool bitmap and definitions (convenient Phylink shorthands are used for elegance and readability). This allowed us to drop all conversions/mappings between the driver and Ethtool. This involves changes in qede and qedf as well, as they used definitions from shared "qed_if.h". Suggested-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Alexander Lobakin <alobakin@marvell.com> Signed-off-by: Igor Russkikh <irusskikh@marvell.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-15scsi: qedf: Demote obvious misuse of kerneldoc to standard comment blocksLee Jones1-10/+8
No attempt has been made to document any of the demoted functions here. Fixes the following W=1 kernel build warning(s): drivers/scsi/qedf/qedf_debugfs.c:25: warning: Function parameter or member 'qedf' not described in 'qedf_dbg_host_init' drivers/scsi/qedf/qedf_debugfs.c:25: warning: Function parameter or member 'dops' not described in 'qedf_dbg_host_init' drivers/scsi/qedf/qedf_debugfs.c:25: warning: Function parameter or member 'fops' not described in 'qedf_dbg_host_init' drivers/scsi/qedf/qedf_debugfs.c:25: warning: Excess function parameter 'pf' description in 'qedf_dbg_host_init' drivers/scsi/qedf/qedf_debugfs.c:51: warning: Function parameter or member 'qedf_dbg' not described in 'qedf_dbg_host_exit' drivers/scsi/qedf/qedf_debugfs.c:51: warning: Excess function parameter 'pf' description in 'qedf_dbg_host_exit' drivers/scsi/qedf/qedf_debugfs.c:64: warning: Function parameter or member 'drv_name' not described in 'qedf_dbg_init' Link: https://lore.kernel.org/r/20200713074645.126138-23-lee.jones@linaro.org Cc: QLogic-Storage-Upstream@cavium.com Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-15scsi: qedf: Remove a whole host of unused variablesLee Jones1-26/+4
Fixes the following W=1 kernel build warning(s): drivers/scsi/qedf/qedf_io.c: In function ‘qedf_cmd_timeout’: drivers/scsi/qedf/qedf_io.c:25:5: warning: variable ‘op’ set but not used [-Wunused-but-set-variable] 25 | u8 op = 0; | ^~ drivers/scsi/qedf/qedf_io.c: In function ‘qedf_map_sg’: drivers/scsi/qedf/qedf_io.c:490:12: warning: variable ‘end_addr’ set but not used [-Wunused-but-set-variable] 490 | u64 addr, end_addr; | ^~~~~~~~ drivers/scsi/qedf/qedf_io.c: In function ‘qedf_post_io_req’: drivers/scsi/qedf/qedf_io.c:863:22: warning: variable ‘req_type’ set but not used [-Wunused-but-set-variable] 863 | enum fcoe_task_type req_type = 0; | ^~~~~~~~ drivers/scsi/qedf/qedf_io.c: In function ‘qedf_scsi_completion’: drivers/scsi/qedf/qedf_io.c:1134:31: warning: variable ‘task_ctx’ set but not used [-Wunused-but-set-variable] 1134 | struct e4_fcoe_task_context *task_ctx; | ^~~~~~~~ drivers/scsi/qedf/qedf_io.c: In function ‘qedf_scsi_done’: drivers/scsi/qedf/qedf_io.c:1345:6: warning: variable ‘xid’ set but not used [-Wunused-but-set-variable] 1345 | u16 xid; | ^~~ drivers/scsi/qedf/qedf_io.c: In function ‘qedf_initiate_abts’: drivers/scsi/qedf/qedf_io.c:1866:6: warning: variable ‘r_a_tov’ set but not used [-Wunused-but-set-variable] 1866 | u32 r_a_tov = 0; | ^~~~~~~ drivers/scsi/qedf/qedf_io.c: In function ‘qedf_process_abts_compl’: drivers/scsi/qedf/qedf_io.c:1967:11: warning: variable ‘xid’ set but not used [-Wunused-but-set-variable] 1967 | uint16_t xid; | ^~~ drivers/scsi/qedf/qedf_io.c: In function ‘qedf_initiate_cleanup’: drivers/scsi/qedf/qedf_io.c:2163:31: warning: variable ‘task’ set but not used [-Wunused-but-set-variable] 2163 | struct e4_fcoe_task_context *task; | ^~~~ drivers/scsi/qedf/qedf_io.c: In function ‘qedf_process_unsol_compl’: drivers/scsi/qedf/qedf_io.c:2534:11: warning: variable ‘tmp’ set but not used [-Wunused-but-set-variable] 2534 | uint16_t tmp; | ^~~ Link: https://lore.kernel.org/r/20200713074645.126138-17-lee.jones@linaro.org Cc: QLogic-Storage-Upstream@cavium.com Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-15scsi: qedf: Remove set but not checked variable 'tmp'Lee Jones1-3/+2
Looks like the return value of readw() has never been checked. Fixes the following W=1 kernel build warning(s): drivers/scsi/qedf/qedf_main.c: In function ‘__qedf_probe’: drivers/scsi/qedf/qedf_main.c:3203:6: warning: variable ‘tmp’ set but not used [-Wunused-but-set-variable] Link: https://lore.kernel.org/r/20200713074645.126138-10-lee.jones@linaro.org Cc: QLogic-Storage-Upstream@cavium.com Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-07-15scsi: qedf: Demote obvious misuse of kerneldoc to standard comment blocksLee Jones1-3/+2
No attempt has been made to document either of the demoted functions here. Fixes the following W=1 kernel build warning(s): drivers/scsi/qedf/qedf_main.c:1027: warning: Function parameter or member 'lport' not described in 'qedf_xmit' drivers/scsi/qedf/qedf_main.c:1027: warning: Function parameter or member 'fp' not described in 'qedf_xmit' drivers/scsi/qedf/qedf_main.c:1426: warning: Function parameter or member 'lport' not described in 'qedf_rport_event_handler' drivers/scsi/qedf/qedf_main.c:1426: warning: Function parameter or member 'rdata' not described in 'qedf_rport_event_handler' drivers/scsi/qedf/qedf_main.c:1426: warning: Function parameter or member 'event' not described in 'qedf_rport_event_handler' Link: https://lore.kernel.org/r/20200713074645.126138-9-lee.jones@linaro.org Cc: QLogic-Storage-Upstream@cavium.com Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-06-13Merge tag 'kbuild-v5.8-2' of ↵Linus Torvalds1-1/+1
git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull more Kbuild updates from Masahiro Yamada: - fix build rules in binderfs sample - fix build errors when Kbuild recurses to the top Makefile - covert '---help---' in Kconfig to 'help' * tag 'kbuild-v5.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: treewide: replace '---help---' in Kconfig files with 'help' kbuild: fix broken builds because of GZIP,BZIP2,LZOP variables samples: binderfs: really compile this sample and fix build issues
2020-06-13treewide: replace '---help---' in Kconfig files with 'help'Masahiro Yamada1-1/+1
Since commit 84af7a6194e4 ("checkpatch: kconfig: prefer 'help' over '---help---'"), the number of '---help---' has been gradually decreasing, but there are still more than 2400 instances. This commit finishes the conversion. While I touched the lines, I also fixed the indentation. There are a variety of indentation styles found. a) 4 spaces + '---help---' b) 7 spaces + '---help---' c) 8 spaces + '---help---' d) 1 space + 1 tab + '---help---' e) 1 tab + '---help---' (correct indentation) f) 1 tab + 1 space + '---help---' g) 1 tab + 2 spaces + '---help---' In order to convert all of them to 1 tab + 'help', I ran the following commend: $ find . -name 'Kconfig*' | xargs sed -i 's/^[[:space:]]*---help---/\thelp/' Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
2020-06-03scsi: qedf: Remove redundant initialization of variable rcColin Ian King1-1/+1
The variable rc is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed. Link: https://lore.kernel.org/r/20200527115242.172344-1-colin.king@canonical.com Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-18scsi: qedf: Get dev info after updating the paramsSaurav Kashyap1-0/+7
An update to pf params can change the devinfo. Get updated device information. [mkp: updated error message spotted by Sergei Shtylyov] Link: https://lore.kernel.org/r/20200416084314.18851-10-skashyap@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-18scsi: qedf: Fix crash when MFW calls for protocol stats while function is ↵Chad Dupuis2-4/+32
still probing The MFW may make a call to qed and then to qedf for protocol statistics while the function is still probing. If this happens it's possible that some members of the struct qedf_ctx may not be fully initialized which can result in a NULL pointer dereference or general protection fault. To prevent this, add a new flag call QEDF_PROBING and set it when the __qedf_probe() function is active. Then in the qedf_get_protocol_tlv_data() function we can check if the function is still probing and return immediantely before any uninitialized structures can be touched. Link: https://lore.kernel.org/r/20200416084314.18851-9-skashyap@marvell.com Signed-off-by: Chad Dupuis <cdupuis@marvell.com> Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-18scsi: qedf: Add schedule recovery handlerChad Dupuis2-0/+44
Implement recovery handler to be used by QED to signal the need for recovery to come out of an error condition like ramrod struck and firmware context reset. Link: https://lore.kernel.org/r/20200416084314.18851-8-skashyap@marvell.com Signed-off-by: Chad Dupuis <cdupuis@marvell.com> Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-18scsi: qedf: Implement callback for bw_updateSaurav Kashyap1-0/+27
Add support for the common qed bw_update callback to qedf. This function is called whenever there is a reported change in the bandwidth and updates corresponding values in sysfs. Link: https://lore.kernel.org/r/20200416084314.18851-7-skashyap@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-18scsi: qedf: Honor status qualifier in FCP_RSP per specJaved Hasan1-10/+34
Handle scope and qualifier on SAM_STAT_TASK_SET_FULL or SAM_STAT_BUSY [mkp: added braces to fix sparse complaint] Link: https://lore.kernel.org/r/20200416084314.18851-5-skashyap@marvell.com Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-18scsi: qedf: Acquire rport_lock for resetting the delay_timestampJaved Hasan1-0/+4
Retry delay timestamp is updated in queuecommand as well as in qedf_scsi_completion routine. Protect it using lock. Link: https://lore.kernel.org/r/20200416084314.18851-4-skashyap@marvell.com Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-18scsi: qedf: Increase the upper limit of retry delayJaved Hasan1-1/+1
Max time to hold the IO in case of SAM_STAT_TASK_SET_FULL or SAM_STAT_BUSY. Link: https://lore.kernel.org/r/20200416084314.18851-3-skashyap@marvell.com Signed-off-by: Javed Hasan <jhasan@marvell.com> Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-18scsi: qedf: Keep track of num of pending flogiSaurav Kashyap2-0/+25
If a port is brought down for an extended period of time, the fipvlan counter gets exhausted and the driver will fall back to default VLAN 1002 and call fcoe_ctlr_link_up to log in. However, the switch will discard the FLOGI attempt because the VLAN is now different. Keep track of the number of FLOGI attempts and if a threshold of QEDF_FLOGI_RETRY_CNT is exceeded, perform a context soft reset. Link: https://lore.kernel.org/r/20200416084314.18851-2-skashyap@marvell.com Signed-off-by: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-04-14scsi: qedf: Simplify mutex_unlock() usageDaniel Wagner1-7/+3
The commit 6d1368e8f987 ("scsi: qedf: fixup locking in qedf_restart_rport()") introduced the lock. Though the lock protects only the fc_rport_create() call. Thus, we can move the mutex unlock up before the if statement and drop the else body. Link: https://lore.kernel.org/r/20200403092717.19779-1-dwagner@suse.de Cc: Hannes Reinecke <hare@suse.com> Cc: Saurav Kashyap <skashyap@marvell.com> Signed-off-by: Daniel Wagner <dwagner@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2020-03-06scsi: qedf: Use pci_get_dsn()Jacob Keller1-13/+5
Replace the open-coded implementation for reading the PCIe DSN with pci_get_dsn(). The original code used a for-loop that looped over each of the 8 bytes and copied them into a temporary buffer. pci_get_dsn() uses two calls to pci_read_config_dword, and correctly bitwise ORs them into a u64. Thus, we can simplify the snprintf significantly using %016llX on a u64 value. Signed-off-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-10-25scsi: Fix various misspellings of "connect"Geert Uytterhoeven1-1/+1
Fix misspellings of "disonnect", "reconnect", "connection", "connected", and "disconnection". Link: https://lore.kernel.org/r/20191024152633.30404-1-geert+renesas@glider.be Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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