scsi: qedf: Use FC rport as argument for qedf_initiate_tmf()

When sending a TMF we're only concerned with the rport and the LUN ID, so
use struct fc_rport as argument for qedf_initiate_tmf().

Signed-off-by: Hannes Reinecke <hare@suse.de>
Link: https://lore.kernel.org/r/20231002154328.43718-5-hare@suse.de
Cc: Saurav Kashyap <skashyap@marvell.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <johannes.thumshirn@wdc.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Add synchronization between I/O completions and abort

Avoid race condition between I/O completion and abort processing by
protecting the cmd_type with the rport lock.

Signed-off-by: Javed Hasan <jhasan@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Link: https://lore.kernel.org/r/20230901060646.27885-1-skashyap@marvell.com
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Fix typo in comment

Spelling mistake (triple letters) in comment. Detected with the help of
Coccinelle.

Link: https://lore.kernel.org/r/20220521111145.81697-75-Julia.Lawall@inria.fr
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Remove redundant variable op

The variable 'op' is assigned a value and is never read. The variable is
not used and is redundant, remove it.

Link: https://lore.kernel.org/r/20220517092518.93159-1-colin.i.king@gmail.com
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Stop using the SCSI pointer

Set .cmd_size in the SCSI host template instead of using the SCSI pointer
from struct scsi_cmnd. Remove the CMD_SCSI_STATUS() assignment because the
assigned value is not used.

This patch prepares for removal of the SCSI pointer from struct scsi_cmnd.

Link: https://lore.kernel.org/r/20220218195117.25689-30-bvanassche@acm.org
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>

scsi: qedf: Fix refcount issue when LOGO is received during TMF

Hung task call trace was seen during LOGO processing.

[ 974.309060] [0000:00:00.0]:[qedf_eh_device_reset:868]: 1:0:2:0: LUN RESET Issued...
[ 974.309065] [0000:00:00.0]:[qedf_initiate_tmf:2422]: tm_flags 0x10 sc_cmd 00000000c16b930f op = 0x2a target_id = 0x2 lun=0
[ 974.309178] [0000:00:00.0]:[qedf_initiate_tmf:2431]: portid=016900 tm_flags =LUN RESET
[ 974.309222] [0000:00:00.0]:[qedf_initiate_tmf:2438]: orig io_req = 00000000ec78df8f xid = 0x180 ref_cnt = 1.
[ 974.309625] host1: rport 016900: Received LOGO request while in state Ready
[ 974.309627] host1: rport 016900: Delete port
[ 974.309642] host1: rport 016900: work event 3
[ 974.309644] host1: rport 016900: lld callback ev 3
[ 974.313243] [0000:61:00.2]:[qedf_execute_tmf:2383]:1: fcport is uploading, not executing flush.
[ 974.313295] [0000:61:00.2]:[qedf_execute_tmf:2400]:1: task mgmt command success...
[ 984.031088] INFO: task jbd2/dm-15-8:7645 blocked for more than 120 seconds.
[ 984.031136] Not tainted 4.18.0-305.el8.x86_64 #1

[ 984.031166] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 984.031209] jbd2/dm-15-8 D 0 7645 2 0x80004080
[ 984.031212] Call Trace:
[ 984.031222] __schedule+0x2c4/0x700
[ 984.031230] ? unfreeze_partials.isra.83+0x16e/0x1a0
[ 984.031233] ? bit_wait_timeout+0x90/0x90
[ 984.031235] schedule+0x38/0xa0
[ 984.031238] io_schedule+0x12/0x40
[ 984.031240] bit_wait_io+0xd/0x50
[ 984.031243] __wait_on_bit+0x6c/0x80
[ 984.031248] ? free_buffer_head+0x21/0x50
[ 984.031251] out_of_line_wait_on_bit+0x91/0xb0
[ 984.031257] ? init_wait_var_entry+0x50/0x50
[ 984.031268] jbd2_journal_commit_transaction+0x112e/0x19f0 [jbd2]
[ 984.031280] kjournald2+0xbd/0x270 [jbd2]
[ 984.031284] ? finish_wait+0x80/0x80
[ 984.031291] ? commit_timeout+0x10/0x10 [jbd2]
[ 984.031294] kthread+0x116/0x130
[ 984.031300] ? kthread_flush_work_fn+0x10/0x10
[ 984.031305] ret_from_fork+0x1f/0x40

There was a ref count issue when LOGO is received during TMF. This leads to
one of the I/Os hanging with the driver. Fix the ref count.

Link: https://lore.kernel.org/r/20220117135311.6256-3-njavali@marvell.com
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Call scsi_done() directly

Conditional statements are faster than indirect calls. Hence call
scsi_done() directly.

Link: https://lore.kernel.org/r/20211007202923.2174984-64-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

qed: Remove e4_ and _e4 from FW HSI

The existing qed/qede/qedr/qedi/qedf code uses chip-specific naming in
structures, functions, variables and defines in FW HSI (Hardware
Software Interface).

The new FW version introduced a generic naming convention in HSI
in-which the same code will be used across different versions
for simpler maintainability. It also eases in providing support for
new features.

With this patch every "_e4" or "e4_" prefix or suffix is not needed
anymore and it will be removed.

Reviewed-by: Manish Rangankar <mrangankar@marvell.com>
Reviewed-by: Javed Hasan <jhasan@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: Omkar Kulkarni <okulkarni@marvell.com>
Signed-off-by: Shai Malin <smalin@marvell.com>
Signed-off-by: Prabhakar Kushwaha <pkushwaha@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

scsi: qedf: Use scsi_cmd_to_rq() instead of scsi_cmnd.request

Prepare for removal of the request pointer by using scsi_cmd_to_rq()
instead. This patch does not change any functionality.

Link: https://lore.kernel.org/r/20210809230355.8186-36-bvanassche@acm.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Add check to synchronize abort and flush

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>

scsi: qedf: Drop unnecessary NULL checks after container_of()

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>

scsi: qedf: Remove redundant assignment to variable 'rc'

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>

scsi: qedf: Fix race between ELS completion and flushing ELS request

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>

scsi: qedf: Initiate cleanup for ELS commands as well

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>

scsi: qedf: Send cleanup even for RRQ on timeout

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>

scsi: qedf: Remove a whole host of unused variables

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>

scsi: qedf: Honor status qualifier in FCP_RSP per spec

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>

scsi: qedf: Acquire rport_lock for resetting the delay_timestamp

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>

scsi: qedf: Add debug information for unsolicited processing

Log s_id, d_id, type and command to the log message.

[mkp: fixed warning]

Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Fix crash during sg_reset

Driver was attempting to print cdb[0], which is not set for resets coming
from SCSI ioctls. Check for cmd_len before accessing cmnd.

Crash info:
[84790.864747] BUG: unable to handle kernel NULL pointer dereference at (null)
[84790.864783] IP: qedf_initiate_tmf+0x7a/0x6e0 [qedf]
[84790.865204] Call Trace:
[84790.865246] scsi_try_target_reset+0x2b/0x90 [scsi_mod]
[84790.865266] scsi_ioctl_reset+0x20f/0x2a0 [scsi_mod]
[84790.865284] scsi_ioctl+0x131/0x3a0 [scsi_mod]

Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Print message during bailout conditions

Print messages during exiting condition to help debugging.

Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 440

Based on 1 normalized pattern(s):

this software is available under the terms of the gnu general public
license gpl version 2 available from the file copying in the main
directory of this source tree

extracted by the scancode license scanner the SPDX license identifier

GPL-2.0-only

has been chosen to replace the boilerplate/reference in 35 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Allison Randal <allison@lohutok.net>
Cc: linux-spdx@vger.kernel.org
Link: https://lkml.kernel.org/r/20190531190115.411886531@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

scsi: qedf: Add port_id for fcport into initiate_cleanup debug message

Port ID will help in debugging.

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>

scsi: qedf: Add LBA to underrun debug messages

Print LBA information for underrun cases.

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>

scsi: qedf: Print scsi_cmd backpointer in good completion path if the command is still being used

Printing scsi command pointer will help in crash dump analysis.

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>

drivers: Remove explicit invocations of mmiowb()

mmiowb() is now implied by spin_unlock() on architectures that require
it, so there is no reason to call it from driver code. This patch was
generated using coccinelle:

@mmiowb@
@@
- mmiowb();

and invoked as:

$ for d in drivers include/linux/qed sound; do \
spatch --include-headers --sp-file mmiowb.cocci --dir $d --in-place; done

NOTE: mmiowb() has only ever guaranteed ordering in conjunction with
spin_unlock(). However, pairing each mmiowb() removal in this patch with
the corresponding call to spin_unlock() is not at all trivial, so there
is a small chance that this change may regress any drivers incorrectly
relying on mmiowb() to order MMIO writes between CPUs using lock-free
synchronisation. If you've ended up bisecting to this commit, you can
reintroduce the mmiowb() calls using wmb() instead, which should restore
the old behaviour on all architectures other than some esoteric ia64
systems.

Acked-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>

scsi: qedf: Fix lport may be used uninitialized warning

- lport was getting used without initialization, initialize it to fix a
warning.

Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Correctly handle refcounting of rdata

- Handle refcount of rdata during error conditions.

Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Cleanup rrq_work after QEDF_CMD_OUTSTANDING is cleared

Here is the relevant logs for the problem we are solving:

qedf_flush_active_ios:1707]:3: Flush active i/o's num=0x17 fcport=0xffff948168fbcc80 port_id=0x550200 scsi_id=0.
qedf_flush_active_ios:1708]:3: Locking flush mutex.
qedf_flush_active_ios:1758]:3: Not outstanding, xid=0xaaf, cmd_type=3 refcount=1.
qedf_flush_active_ios:1896]:3: Flushed 0x16 I/Os, active=0x1.
qedf_flush_active_ios:1901]:3: Flushed 0x16 I/Os, active=0x1 cnt=60.
qedf_send_rrq:295]:3: Sending RRQ orig io = ffffb48b8f7d7158, orig_xid = 0xaaf
qedf_initiate_els:37]:3: Sending ELS
qedf_initiate_els:68]:3: initiate_els els_req = 0xffffb48b8f6d3098 cb_arg = ffff948fd5e4de80 xid = 4c6
qedf_init_mp_req:2172]:3: Entered.
qedf_init_mp_task:727]:3: Initializing MP task for cmd_type=4
qedf_initiate_els:134]:3: Ringing doorbell for ELS req
qedf_flush_active_ios:1901]:3: Flushed 0x16 I/Os, active=0x2 cnt=20.
qedf_cmd_timeout:96]:3: ELS timeout, xid=0x4c6.
qedf_rrq_compl:186]:3: Entered.
qedf_rrq_compl:204]:3: rrq_compl: orig io = ffffb48b8f7d7158, orig xid = 0xaaf, rrq_xid = 0x4c6, refcount=1
qedf_flush_active_ios:1935]:3: Unlocking flush mutex.
qedf_upload_connection:1579]:3: Uploading connection port_id=550200.

We found an ABTS command for which CMD_OUTSTANDING was cleared (line 3).
For this command, delayed send_rrq was queued, but would take 10 secs to
execute. Adding capability to detect that (based on io_req->state that is
being introduced), and attempt to cancel rrq_work. If we succeed, we drop
the reference and free the io_req. If we cannot, then the els will get sent
out and we will wait for 10 secs for it to complete.

Signed-off-by: Shyam Sundar <ssundar@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Check for tm_flags instead of cmd_type during cleanup

cmd_type is over written to QEDF_CLEANUP during cleanup, so check for
tm_flags.

Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Add a flag to help debugging io_req which could not be cleaned

- The flag will help in to figure out if io_req is cleaned or not.

Signed-off-by: Shyam Sundar <ssundar@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Don't send ABTS for under run scenario

- Command is already completed with underrun so no need to send ABTS.

Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Don't queue anything if upload is in progress

- I/Os, aborts and tmf should not be queued if flush is in progress.

Signed-off-by: Shyam Sundar <ssundar@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: fc_rport_priv reference counting fixes

The fc_rport_priv structure is reference counted, so we need to ensure that
the reference is increased before accessing the structure.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Add missing return in qedf_scsi_done()

On completions where we do not have a bad scsi_cmnd pointer we should
return before the the label lest we do a double kref_put.

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>

scsi: qedf: Add additional checks for io_req->sc_cmd validity

- Check the validity of various pointers before processing.

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>

scsi: qedf: Correct the memory barriers in qedf_ring_doorbell

- Correct memory barriers to make sure all cmnds are flushed.

Signed-off-by: Andrew Vasquez <andrewv@marvell.com>
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Use a separate completion for cleanup commands

- If a TMF and cleanup are issued at the same time they could cause a call
trace if issued against the same xid as the io_req->tm_done completion
is used for both.

- Set and clear cleanup bit in cleanup routine.

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>

scsi: qedf: Modify abort and tmf handler to handle edge condition and flush

An I/O can be in any state when flush is called, it can be in abort,
waiting for abort, RRQ send and waiting or TMF send.

- HZ can be different on different architecture, correctly set abort
timeout value.

- Flush can complete the I/Os prematurely, handle refcount for aborted
I/Os and for which RRQ is pending.

- Differentiate LUN/TARGET reset, as cleanup needs to be send to firmware
accordingly.

- Add flush mutex to sync cleanup call from abort and flush routine.

- Clear abort/outstanding bit on timeout.

Signed-off-by: Shyam Sundar <shyam.sundar@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>

scsi: qedf: Modify flush routine to handle all I/Os and TMF

The purpose of flush routine is to cleanup I/Os to the firmware and
complete them to scsi middle layer. This routine is invoked before
connection is uploaded because of rport going away.

- Don't process any I/Os, aborts, TMFs coming when flush in progress.

- Add flags to handle cleanup and release of I/Os because flush can
prematurely complete I/Os.

- Original command can get completed to driver when cleanup for same is
posted to firmware, handle this condition.

- Modify flush to handle I/Os in all the states like abort, TMF, RRQ and
timeouts.

Signed-off-by: Shyam Sundar <ssundar@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>

scsi: qedf: Simplify s/g list mapping

When mapping the pages from a scatter/gather list from the SCSI layer we
only need to follow these rules:

- Max SGEs for each I/O request is 256
- No size limit on each SGE
- No need to split OS provided SGEs to 4K before sending to firmware.
- Slow SGE is applicable only when:
- There are > 8 SGEs and any middle SGE is less than a page size (4K)

Make necessary changes so that driver follows these rules. Applicable only
for Write requests (not for Read requests). No need to check SGE address
alignment requirements (first, middle or last) before declaring slow SGE.

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>

scsi: qedf: Add missing return in qedf_post_io_req() in the fcport offload check

Fixes the following crash as the return was missing from the check if an
fcport is offloaded. If we hit this code we continue to try to post an
invalid task which can lead to the crash:

[30259.616411] [0000:61:00.3]:[qedf_post_io_req:989]:3: Session not offloaded yet.
[30259.616413] [0000:61:00.3]:[qedf_upload_connection:1340]:3: Uploading connection port_id=490020.
[30259.623769] BUG: unable to handle kernel NULL pointer dereference at 0000000000000198
[30259.631645] IP: [<ffffffffc035b1ed>] qedf_init_task.isra.16+0x3d/0x450 [qedf]
[30259.638816] PGD 0
[30259.640841] Oops: 0000 [#1] SMP
[30259.644098] Modules linked in: fuse xt_CHECKSUM iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack ipt_REJECT nf_reject_ipv4 tun bridge stp llc ebtable_filter ebtables devlink ip6table_filter ip6_tables iptable_filter vfat fat ib_isert iscsi_target_mod ib_srpt target_core_mod ib_srp scsi_transport_srp ib_ipoib ib_ucm ib_umad dm_service_time skx_edac intel_powerclamp coretemp intel_rapl iosf_mbi kvm_intel kvm irqbypass crc32_pclmul ghash_clmulni_intel aesni_intel rpcrdma sunrpc rdma_ucm ib_uverbs lrw gf128mul ib_iser rdma_cm iw_cm ib_cm libiscsi scsi_transport_iscsi qedr(OE) glue_helper ablk_helper cryptd ib_core dm_round_robin joydev pcspkr ipmi_ssif ses enclosure ipmi_si ipmi_devintf ipmi_msghandler mei_me
[30259.715529] mei sg hpilo hpwdt shpchp wmi lpc_ich acpi_power_meter dm_multipath ip_tables xfs libcrc32c sd_mod crc_t10dif crct10dif_generic uas usb_storage mgag200 qedf(OE) i2c_algo_bit libfcoe drm_kms_helper libfc syscopyarea sysfillrect scsi_transport_fc qede(OE) sysimgblt fb_sys_fops ptp ttm pps_core drm qed(OE) smartpqi crct10dif_pclmul crct10dif_common crc32c_intel i2c_core scsi_transport_sas scsi_tgt dm_mirror dm_region_hash dm_log dm_mod
[30259.754237] CPU: 9 PID: 977 Comm: kdmwork-253:7 Kdump: loaded Tainted: G W OE ------------ 3.10.0-862.el7.x86_64 #1
[30259.765664] Hardware name: HPE Synergy 480 Gen10/Synergy 480 Gen10 Compute Module, BIOS I42 04/04/2018
[30259.775000] task: ffff8c801efd0000 ti: ffff8c801efd8000 task.ti: ffff8c801efd8000
[30259.782505] RIP: 0010:[<ffffffffc035b1ed>] [<ffffffffc035b1ed>] qedf_init_task.isra.16+0x3d/0x450 [qedf]
[30259.792116] RSP: 0018:ffff8c801efdbbb0 EFLAGS: 00010046
[30259.797444] RAX: 0000000000000000 RBX: ffffa7f1450948d8 RCX: ffff8c7fe5bc40c8
[30259.804600] RDX: ffff8c800715b300 RSI: ffffa7f1450948d8 RDI: ffff8c80169c2480
[30259.811755] RBP: ffff8c801efdbc30 R08: 00000000000000ae R09: ffff8c800a314540
[30259.818911] R10: ffff8c7fe5bc40c8 R11: ffff8c801efdb8ae R12: 0000000000000000
[30259.826068] R13: ffff8c800715b300 R14: ffff8c80169c2480 R15: ffff8c8005da28e0
[30259.833223] FS: 0000000000000000(0000) GS:ffff8c803f840000(0000) knlGS:0000000000000000
[30259.841338] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[30259.847100] CR2: 0000000000000198 CR3: 000000081242e000 CR4: 00000000007607e0
[30259.854256] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[30259.861412] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[30259.868568] PKRU: 00000000
[30259.871278] Call Trace:
[30259.873737] [<ffffffffc035c948>] qedf_post_io_req+0x148/0x680 [qedf]
[30259.880201] [<ffffffffc035d070>] qedf_queuecommand+0x1f0/0x240 [qedf]
[30259.886749] [<ffffffffa329b050>] scsi_dispatch_cmd+0xb0/0x240
[30259.892600] [<ffffffffa32a45bc>] scsi_request_fn+0x4cc/0x680
[30259.898364] [<ffffffffa3118ad9>] __blk_run_queue+0x39/0x50
[30259.903954] [<ffffffffa3114393>] __elv_add_request+0xd3/0x260
[30259.909805] [<ffffffffa311baf0>] blk_insert_cloned_request+0xf0/0x1b0
[30259.916358] [<ffffffffc010b622>] map_request+0x142/0x220 [dm_mod]
[30259.922560] [<ffffffffc010b716>] map_tio_request+0x16/0x40 [dm_mod]
[30259.928932] [<ffffffffa2ebb1f5>] kthread_worker_fn+0x85/0x180
[30259.934782] [<ffffffffa2ebb170>] ? kthread_stop+0xf0/0xf0
[30259.940284] [<ffffffffa2ebae31>] kthread+0xd1/0xe0
[30259.945176] [<ffffffffa2ebad60>] ? insert_kthread_work+0x40/0x40
[30259.951290] [<ffffffffa351f61d>] ret_from_fork_nospec_begin+0x7/0x21
[30259.957750] [<ffffffffa2ebad60>] ? insert_kthread_work+0x40/0x40
[30259.963860] Code: fe 41 55 49 89 d5 41 54 53 48 89 f3 48 83 ec 58 4c 8b 67 28 4c 8b 4e 18 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 4c 8b 7e 58 <49> 8b 84 24 98 01 00 00 48 8b 00 f6 80 31 01 00 00 10 0f 85 0b
[30259.983372] RIP [<ffffffffc035b1ed>] qedf_init_task.isra.16+0x3d/0x450 [qedf]
[30259.990630] RSP <ffff8c801efdbbb0>
[30259.994127] CR2: 0000000000000198

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>

scsi: qedf: Correct xid range overlap between offloaded requests and libfc requests

There is currently an overlap where exchange IDs between what is used for
offloaded commands and by libfc for ELS commands. Correct this so that
exchange ID range is:

Offloaded requests: 0 to 0xfff
libfc requests: 0x1000 to 0xfffe

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>

scsi: stop setting up request->special

No more need in a blk-mq world where the scsi command and request are
allocated together.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

qedf: Add support for populating ethernet TLVs.

This patch adds callbacks for providing the ethernet protocol driver TLVs.

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

scsi: qedf: Update copyright for 2018

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Add more defensive checks for concurrent error conditions

During an uplink toggle test all error handling is done via timeout and
firmware error conditions which can occur concurrently:

- SCSI layer timeouts
- Error detect CQEs
- Firmware detected underruns
- ABTS timeouts

All these concurrent events require more defensive checks in the driver
including:

- Check both internally and externally generated aborts to make sure the
xid is not already been aborted in another context or in cleanup.

- Check back pointers in qedf_cmd_timeout to verify the context of the
io_req, fcport and qedf_ctx

- Check rport state in host reset handler to not reset the whole host
if the rport is already uploaded or in the process of relogin

- Check to state for an fcport before initiating a middle path ELS
request

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Add additional checks when restarting an rport due to ABTS timeout

There are a couple of kernel cases when we restart a remote port due to
ABTS timeout that we need to handle:

1. Flush any outstanding ABTS requests when flushing I/Os so that we do
not hold up the eh_abort handler indefinitely causing process hangs.

2. Check if we are currently uploading a connection before issuing an
ABTS.

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Add task id to kref_get_unless_zero() debug messages when flushing requests

Helps to corroborate which requests we can't get reference on and if
it's real bug or not.

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Return request as DID_NO_CONNECT if MSI-X is not enabled

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Add check for offload before flushing I/Os for target

We need to check that a fcport is offloaded before we try to flush any
requests. No doing so could lead to undefined results and most likely a
crash.

Fixes the oops:

[ 343.971886] [0000:42:00.3]:[qedf_execute_tmf:2070]:8: wait for tm_cmpl timeout!
[ 343.971933] BUG: unable to handle kernel paging request at 00000000000024a8
[ 343.971949] IP: [<ffffffffa06b8cc6>] qedf_flush_active_ios+0x46/0x260 [qedf]
[ 343.971952] PGD 42c569067 PUD 4160fe067 PMD 0
[ 343.971954] Oops: 0000 [#1] SMP
[ 343.972008] Modules linked in: qedf(OEX) qed(OEX) bnx2i cnic fuse af_packet iscsi_ibft msr xfs intel_rapl sb_edac edac_core x86_pkg_temp_thermal bnx2x geneve intel_powerclamp vxlan coretemp ipmi_ssif ipmi_devintf kvm_intel kvm libiscsi joydev irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel tg3 ip6_udp_tunnel udp_tunnel mdio libcrc32c iTCO_wdt scsi_transport_iscsi uio drbg iTCO_vendor_support iscsi_boot_sysfs dcdbas(X) ipmi_si ansi_cprng aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper ptp pps_core pcspkr libphy lpc_ich mfd_core cryptd fjes wmi ipmi_msghandler button crc8 libfcoe libfc scsi_transport_fc mei_me mei shpchp processor acpi_pad btrfs xor hid_generic usbhid raid6_pq sd_mod sr_mod cdrom mgag200 crc32c_intel i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt
[ 343.972020] fb_sys_fops ttm ahci ehci_pci libahci ehci_hcd drm libata usbcore megaraid_sas usb_common sg dm_multipath dm_mod scsi_dh_rdac scsi_dh_emc scsi_dh_alua scsi_mod autofs4 [last unloaded: qedf]
[ 343.972022] Supported: Yes, External
[ 343.972026] CPU: 30 PID: 12777 Comm: sg_reset Tainted: G W OE X 4.4.73-5-default #1
[ 343.972027] Hardware name: Dell Inc. PowerEdge R720/0X3D66, BIOS 2.1.3 11/20/2013
[ 343.972029] task: ffff88018dfc0e80 ti: ffff88042bd7c000 task.ti: ffff88042bd7c000
[ 343.972036] RIP: 0010:[<ffffffffa06b8cc6>] [<ffffffffa06b8cc6>] qedf_flush_active_ios+0x46/0x260 [qedf]
[ 343.972038] RSP: 0018:ffff88042bd7fbe0 EFLAGS: 00010286
[ 343.972039] RAX: 0000000000000000 RBX: ffff88042ce37800 RCX: 0000000000000400
[ 343.972040] RDX: 000000000000060e RSI: ffffffffa06be830 RDI: ffff8807e5072cc0
[ 343.972041] RBP: 0000000000001000 R08: ffffffffa06bff4d R09: ffff88018dd84580
[ 343.972042] R10: 000000000000018b R11: 0000000000000002 R12: 0000000000002003
[ 343.972043] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8807e5072cc0
[ 343.972046] FS: 00007fc1c8809700(0000) GS:ffff88042fbc0000(0000) knlGS:0000000000000000
[ 343.972048] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 343.972049] CR2: 00000000000024a8 CR3: 00000004236ec000 CR4: 00000000001406e0
[ 343.972050] Stack:
[ 343.972053] 504c78750607e154 ffffffff810a7d10 ffff88042ce37800 0000000000000010
[ 343.972055] 0000000000002003 ffff8807ff480c48 ffff8807e5072cc0 ffffc90004ec4ff8
[ 343.972057] ffffffffa06b9b86 ffff880800000010 0000000000000282 ffff88042ce37800
[ 343.972058] Call Trace:
[ 343.972094] [<ffffffffa06b9b86>] qedf_initiate_tmf+0x346/0x3e0 [qedf]
[ 343.972120] [<ffffffffa000fa06>] scsi_try_bus_device_reset+0x26/0x40 [scsi_mod]
[ 343.972133] [<ffffffffa001038e>] scsi_ioctl_reset+0x13e/0x260 [scsi_mod]
[ 343.972145] [<ffffffffa000f416>] scsi_ioctl+0x136/0x3d0 [scsi_mod]
[ 343.972154] [<ffffffff812ff6eb>] blkdev_ioctl+0x6bb/0x950
[ 343.972164] [<ffffffff8123cfed>] block_ioctl+0x3d/0x40
[ 343.972170] [<ffffffff81217e2d>] do_vfs_ioctl+0x2cd/0x4a0
[ 343.972186] [<ffffffff81218074>] SyS_ioctl+0x74/0x80
[ 343.972193] [<ffffffff8160916e>] entry_SYSCALL_64_fastpath+0x12/0x6d
[ 343.975285] DWARF2 unwinder stuck at entry_SYSCALL_64_fastpath+0x12/0x6d

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: remove redundant initialization of 'fcport'

Pointer fcport is initialized with a value that is never read, it is
re-assigned a new value later on, hence the initialization is redundant
and can be removed.

Cleans up clang warning:
drivers/scsi/qedf/qedf_io.c:920:21: warning: Value stored to 'fcport'
during its initialization is never read

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

qed*: Utilize FW 8.33.1.0

Advance the qed* drivers to use firmware 8.33.1.0:
Modify core driver (qed) to utilize the new FW and initialize the device
with it. This is the lion's share of the patch, and includes changes to FW
interface files, device initialization flows, FW interaction flows, and
debug collection flows.
Modify Ethernet driver (qede) to make use of new FW in fastpath.
Modify RoCE/iWARP driver (qedr) to make use of new FW in fastpath.
Modify FCoE driver (qedf) to make use of new FW in fastpath.
Modify iSCSI driver (qedi) to make use of new FW in fastpath.

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Yuval Bason <Yuval.Bason@cavium.com>
Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Manish Chopra <Manish.Chopra@cavium.com>
Signed-off-by: Chad Dupuis <Chad.Dupuis@cavium.com>
Signed-off-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

qed*: HSI renaming for different types of HW

This patch renames defines and structures in the FW HSI files to allow a
distinction between different types of HW.

Signed-off-by: Ariel Elior <Ariel.Elior@cavium.com>
Signed-off-by: Michal Kalderon <Michal.Kalderon@cavium.com>
Signed-off-by: Chad Dupuis <Chad.Dupuis@cavium.com>
Signed-off-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

scsi: qedf: Check if sense buffer has been allocated during completion

sc_cmd->sense_buffer is not guaranteed to be allocated so we need to
sc_cmd->check
if the pointer is NULL before trying to copy anything into it.

Fixes the crash:

[ 143.793176] [0000:00:00.0]:[qedf_eh_device_reset:626]: LUN RESET Issued...
[ 143.802996] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 143.803063] IP: qedf_parse_fcp_rsp+0xe2/0x290 [qedf]
[ 143.803077] PGD 0
[ 143.803078] P4D 0

[ 143.803103] Oops: 0002 [#1] SMP
[ 143.803115] Modules linked in: msr(E) ebtable_filter(E) ebtables(E) ip6table_filter(E) ip6_tables(E) iptable_filter(E) ip_tables(E) x_tables(E) raw(E) scsi_transport_iscsi(E) br_netfilter(E) bridge(E) iscsi_ibft(E) iscsi_boot_sysfs(E) intel_rapl(E) sb_edac(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) coretemp(E) kvm_intel(E) kvm(E) irqbypass(E) crct10dif_pclmul(E) crc32_pclmul(E) xfs(E) ghash_clmulni_intel(E) pcbc(E) aesni_intel(E) aes_x86_64(E) crypto_simd(E) ipmi_ssif(E) glue_helper(E) iTCO_wdt(E) iTCO_vendor_support(E) lpc_ich(E) ipmi_si(E) pcspkr(E) hpilo(E) ioatdma(E) cryptd(E) ipmi_devintf(E) hpwdt(E) mfd_core(E) shpchp(E) dca(E) thermal(E) pcc_cpufreq(E) ipmi_msghandler(E) acpi_cpufreq(E) af_packet(E) btrfs(E) xor(E) raid6_pq(E) sr_mod(E) cdrom(E) ata_generic(E) sd_mod(E) 8021q(E) garp(E)
[ 143.803302] stp(E) llc(E) mrp(E) bnx2fc(E) cnic(E) uio(E) mgag200(E) ata_piix(E) i2c_algo_bit(E) drm_kms_helper(E) syscopyarea(E) sysfillrect(E) sysimgblt(E) ahci(E) fb_sys_fops(E) bnx2x(E) qedf(E) serio_raw(E) libahci(E) ttm(E) uhci_hcd(E) ehci_pci(E) qed(E) mdio(E) libcrc32c(E) ehci_hcd(E) crc32c_intel(E) drm(E) libata(E) usbcore(E) tg3(E) ptp(E) hpsa(E) pps_core(E) scsi_transport_sas(E) libphy(E) wmi(E) button(E) fcoe(E) libfcoe(E) libfc(E) scsi_transport_fc(E) sg(E) dm_multipath(E) dm_mod(E) scsi_dh_rdac(E) scsi_dh_emc(E) scsi_dh_alua(E) scsi_mod(E) autofs4(E)
[ 143.803438] CPU: 31 PID: 494 Comm: kworker/31:2 Tainted: G E 4.12.0-rc1-69-default+ #1
[ 143.803461] Hardware name: HP ProLiant DL380p Gen8, BIOS P70 08/20/2012
[ 143.803480] Workqueue: qedf_io_wq qedf_fp_io_handler [qedf]
[ 143.803496] task: ffff8804181a0000 task.stack: ffffc90003b64000
[ 143.803514] RIP: 0010:qedf_parse_fcp_rsp+0xe2/0x290 [qedf]
[ 143.803529] RSP: 0018:ffffc90003b67dc8 EFLAGS: 00010246
[ 143.803544] RAX: 0000000000000000 RBX: ffff880401abdd48 RCX: 000000000000000c
[ 143.803563] RDX: 0000000000000060 RSI: ffffffffa039c740 RDI: 0000000000000000
[ 143.803581] RBP: ffffc90003b67df0 R08: ffffffffa039dba8 R09: 0000000000000000
[ 143.803600] R10: 0000000000000000 R11: 0000000000000018 R12: 0000000000000000
[ 143.803619] R13: ffff88040ac80bc8 R14: 0000000000000008 R15: ffff880407c14008
[ 143.803638] FS: 0000000000000000(0000) GS:ffff88043f7c0000(0000) knlGS:0000000000000000
[ 143.804360] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 143.805065] CR2: 0000000000000000 CR3: 0000000001c09000 CR4: 00000000000406e0
[ 143.805753] Call Trace:
[ 143.806436] qedf_process_tmf_compl+0x19/0x30 [qedf]
[ 143.807124] qedf_process_cqe+0x265/0x280 [qedf]
[ 143.807800] qedf_fp_io_handler+0x26/0x60 [qedf]
[ 143.808469] process_one_work+0x138/0x370
[ 143.809133] worker_thread+0x4d/0x3b0
[ 143.809797] kthread+0x109/0x140
[ 143.810451] ? rescuer_thread+0x320/0x320
[ 143.811100] ? kthread_park+0x60/0x60
[ 143.811743] ret_from_fork+0x2c/0x40

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Fixup unnecessary parantheses around test_bit operations.

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Check that fcport is offloaded before dereferencing pointers in initiate_abts|cleanup.

If an fcport is not offloaded then the members of the qedf_rport struct
are undefined which may cause a system crash.

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Update copyright to 2017.

Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

qed*: Utilize Firmware 8.15.3.0

This patch advances the qed* drivers into using the newer firmware -
This solves several firmware bugs, mostly related [but not limited to]
various init/deinit issues in various offloaded protocols.

It also introduces a major 4-Cached SGE change in firmware, which can be
seen in the storage drivers' changes.

In addition, this firmware is required for supporting the new QL41xxx
series of adapters; While this patch doesn't add the actual support,
the firmware contains the necessary initialization & firmware logic to
operate such adapters [actual support would be added later on].

Changes from Previous versions:
-------------------------------
- V2 - fix kbuild-test robot warnings

Signed-off-by: Tomer Tayar <Tomer.Tayar@cavium.com>
Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Manish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: Chad Dupuis <Chad.Dupuis@cavium.com>
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

scsi: qedf: Fix defective logging format and argument mismatches

Add __printf compiler verification of format and arguments. Fix
fallout.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: fixup compilation warning about atomic_t usage

Based on an original patch by Hannes Reinecke.

The driver didn't follow the atomic_t vs refcount_t change, and anyway
one should be using kref_read() instead of accessing the counter inside
an kref.

Fixes: 61d8658b4a435e ("scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.)
Cc: Hannes Reinecke <hare@suse.de>
Cc: Nilesh Javali <nilesh.javali@cavium.com>
Signed-off-by: Dupuis, Chad <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

scsi: qedf: Add QLogic FastLinQ offload FCoE driver framework.

The QLogic FastLinQ Driver for FCoE (qedf) is the FCoE specific module
for 41000 Series Converged Network Adapters by QLogic. This patch
consists of following changes:

- MAINTAINERS Makefile and Kconfig changes for qedf
- PCI driver registration
- libfc/fcoe host level initialization
- SCSI host template initialization and callbacks
- Debugfs and log level infrastructure
- Link handling
- Firmware interface structures
- QED core module initialization
- Light L2 interface callbacks
- I/O request initialization
- Firmware I/O completion handling
- Firmware ELS request/response handling
- FIP request/response handled by the driver itself

Signed-off-by: Nilesh Javali <nilesh.javali@cavium.com>
Signed-off-by: Manish Rangankar <manish.rangankar@cavium.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@cavium.com>
Signed-off-by: Arun Easi <arun.easi@cavium.com>
Signed-off-by: Chad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>