Commit Graph

2248 Commits

Author SHA1 Message Date
Bart Van Assche
0f8243e646 scsi: qla2xxx: Set the responder mode if appropriate for ELS pass-through IOCBs
According to the firmware documentation responder mode must be set for ELS
pass-through IOCBs if a response is expected.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:08 -04:00
Bart Van Assche
9933c050fe scsi: qla2xxx: Make it explicit that ELS pass-through IOCBs use little endian
According to the firmware documentation the firmware expects all ELS
pass-through IOCB parameters in little endian format. Make this explicit.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:08 -04:00
Bart Van Assche
0597fe601a scsi: qla2xxx: Check secondary image if reading the primary image fails
This patch fixes several Coverity complaints about reading data that has
not been initialized.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:08 -04:00
Bart Van Assche
c43e7832ee scsi: qla2xxx: Change the return type of qla24xx_read_flash_data()
This change makes it easier to detect qla24xx_read_flash_data() failures
and also to handle such failures. This change does not modify the behavior
of the driver since all callers ignore the qla24xx_read_flash_data()
return value.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:07 -04:00
Bart Van Assche
df95f39ae7 scsi: qla2xxx: Introduce the be_id_t and le_id_t data types for FC src/dst IDs
Introduce the be_id_t and le_id_t data types for Fibre Channel source and
destination ID formats supported by the firmware instead of using an
uint8_t[3] array. Introduce functions for converting from and to the
port_id_t data types. This patch does not change the behavior of the
qla2xxx driver but improves source code readability and also allows the
compiler to verify the endianness of Fibre Channel IDs.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:07 -04:00
Bart Van Assche
fb3250974a scsi: qla2xxx: Complain if a soft reset fails
Failure of a soft reset is a severe failure. Hence report such failures.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:07 -04:00
Bart Van Assche
527e9b704c scsi: qla2xxx: Use memcpy() and strlcpy() instead of strcpy() and strncpy()
This patch makes the string manipulation code easier to verify.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:07 -04:00
Bart Van Assche
dc6d6d34e1 scsi: qla2xxx: Check the PCI info string output buffer size
Pass the output buffer size to the code that generates a PCI info string
and check the output buffer size while generating a PCI info string.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:07 -04:00
Bart Van Assche
fcef08932d scsi: qla2xxx: Complain if waiting for pending commands times out
Such a timeout is a severe issue. Hence complain if waiting for pending
commands times out. This patch fixes a small bug: it modifies
qla82xx_chip_reset_cleanup() such that the "Done waiting" message is
reported if qla82xx_chip_reset_cleanup() succeeded instead of if that
function failed.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:07 -04:00
Bart Van Assche
bc97c9484b scsi: qla2xxx: Declare fourth qla2x00_set_model_info() argument const
Make it clear to humans and also to the compiler that the string passed
as fourth argument is not modified.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:07 -04:00
Bart Van Assche
e6803efae5 scsi: qla2xxx: Always check the qla2x00_wait_for_hba_online() return value
This patch fixes several Coverity complaints about not always checking
the qla2x00_wait_for_hba_online() return value.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:07 -04:00
Bart Van Assche
c4707fccb3 scsi: qla2xxx: Suppress multiple Coverity complaint about out-of-bounds accesses
This patch does not change any functionality.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:07 -04:00
Bart Van Assche
f91ff36a57 scsi: qla2xxx: Suppress a Coveritiy complaint about integer overflow
This patch fixes the following Coverity complaint:

Unintentional integer overflow (OVERFLOW_BEFORE_WIDEN)
overflow_before_widen: Potentially overflowing expression dma_eng_num *
65536U with type unsigned int (32 bits, unsigned) is evaluated using 32-bit
arithmetic, and then used in a context that expects an expression of type
uint64_t (64 bits, unsigned).

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:07 -04:00
Bart Van Assche
3a392b4f38 scsi: qla2xxx: Remove unreachable code from qla83xx_idc_lock()
This was detected by Coverity.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:06 -04:00
Bart Van Assche
c29282c65d scsi: qla2xxx: Fix qla24xx_process_bidir_cmd()
Set the r??_data_len variables before using these instead of after.

This patch fixes the following Coverity complaint:

const: At condition req_data_len != rsp_data_len, the value of req_data_len
must be equal to 0.
const: At condition req_data_len != rsp_data_len, the value of rsp_data_len
must be equal to 0.
dead_error_condition: The condition req_data_len != rsp_data_len cannot be
true.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Fixes: a9b6f722f6 ("[SCSI] qla2xxx: Implementation of bidirectional.") # v3.7.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:06 -04:00
Bart Van Assche
282d10565e scsi: qla2xxx: Simplify a debug statement
Read the FC port state once instead of twice. This patch fixes the
following Coverity complaint:

Unchecked return value (CHECKED_RETURN)
check_return: Calling atomic_read without checking return value (as is
done elsewhere 80 out of 92 times).

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:06 -04:00
Bart Van Assche
258f0752ef scsi: qla2xxx: Remove dead code
Since sess == NULL before 'goto out_term2' is executed, the code under 'if
(sess)' cannot be reached. Hence remove that code. This was detected by
Coverity.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:06 -04:00
Bart Van Assche
6f153bcf12 scsi: qla2xxx: Complain if parsing the version string fails
This patch fixes a Coverity complaint about not checking the sscanf()
return value.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:06 -04:00
Bart Van Assche
58e060e11b scsi: qla2xxx: Complain if a mailbox command times out
This patch fixes the following Coverity complaint:

Unchecked return value (CHECKED_RETURN)
check_return: Calling wait_for_completion_timeout without checking return
value (as is done elsewhere 14 out of 17 times).

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:06 -04:00
Bart Van Assche
cc74049f35 scsi: qla2xxx: Use strlcpy() instead of strncpy()
This patch fixes several gcc complaints about string truncation.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:06 -04:00
Bart Van Assche
1df627b4f7 scsi: qla2xxx: Do not corrupt vha->plogi_ack_list
Delete the PLOGIN ACK data structure from the vha->plogi_ack_list before
freeing that data structure to avoid that that list gets corrupted.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:06 -04:00
Bart Van Assche
b3e9772d9e scsi: qla2xxx: Report the firmware status code if a mailbox command fails
It is helpful when debugging this driver to have the firmware status code
available if a mailbox command fails. Hence report that firmware status
code.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:06 -04:00
Bart Van Assche
ac452b8e79 scsi: qla2xxx: Fix session lookup in qlt_abort_work()
Pass the correct session ID to find_sess_by_s_id() instead of passing an
uninitialized variable.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Fixes: 2d70c103fd ("[SCSI] qla2xxx: Add LLD target-mode infrastructure for >= 24xx series") # v3.5.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:06 -04:00
Bart Van Assche
f1333c48a4 scsi: qla2xxx: Simplify qla24xx_abort_sp_done()
Instead of explicitly checking whether a timeout has occurred, ignore the
del_timer() return value.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:06 -04:00
Bart Van Assche
8b21900b09 scsi: qla2xxx: Remove two superfluous tests
Since qlt_remove_target() only calls qlt_release() if
vha->vha_tgt.qla_tgt != NULL, checking that pointer inside qlt_release()
is not necessary. This patch fixes the following Coverity complaint:

CID 188348 (#1 of 1): Dereference after null check (FORWARD_NULL)
var_deref_model: Passing null pointer &vha->vha_tgt.qla_tgt->tgt_list_entry
to list_del, which dereferences it.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:05 -04:00
Bart Van Assche
53be100b36 scsi: qla2xxx: Remove a superfluous pointer check
Checking a pointer after it has been dereferenced is not useful. This was
detected by Coverity.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:05 -04:00
Bart Van Assche
09434912ed scsi: qla2xxx: Simplify qlt_lport_dump()
Simplify the implementation of this function by using the %phC format
specifier instead of using explicit for-loops.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:05 -04:00
Bart Van Assche
9c17c3b1e0 scsi: qla2xxx: Reduce the number of casts in GID list code
This patch makes the code that parses the GID list easier to read without
changing the behavior of the code.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:05 -04:00
Bart Van Assche
57bf595a6f scsi: qla2xxx: Verify locking assumptions at runtime
Make sure that locking assumptions are verified at runtime if kernel
debugging is enabled.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:05 -04:00
Bart Van Assche
9e75b5e2c8 scsi: qla2xxx: Change data_dsd into an array
This patch does not change any functionality but fixes a Coverity complaint
about using a scalar as an array.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:05 -04:00
Bart Van Assche
bb6efb1ea6 scsi: qla2xxx: Declare qla_tgt_cmd.cdb const
Make it clear that the CDB is not modified after processing of a SCSI
command has started.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:05 -04:00
Bart Van Assche
6d58ef05fd scsi: qla2xxx: Reduce the scope of three local variables in qla2xxx_queuecommand()
This patch makes it clear that the tag, hwq and qpair variables are only
used in the mq path.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:05 -04:00
Bart Van Assche
909c1d1492 scsi: qla2xxx: Change the return type of qla2x00_update_ms_fdmi_iocb() into void
The value returned by this function is not used. Hence change the return
type of this function into 'void' and remove the return statement.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:05 -04:00
Bart Van Assche
c254b52b58 scsi: qla2xxx: Declare the fourth ql_dump_buffer() argument const
This patch makes it clear to humans and also to the compiler that
ql_dump_buffer() does not modify the memory the @buf argument points at.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:05 -04:00
Bart Van Assche
36645232d9 scsi: qla2xxx: Remove a superfluous forward declaration
Since qlt_make_local_sess() is defined before it is called, remove the
forward declaration of that function.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:05 -04:00
Bart Van Assche
3f5ee085d3 scsi: qla2xxx: Remove an include directive from qla_mr.c
There is no bsg code in the qla_mr.c source file. Hence do not include
the <linux/bsg-lib.h> header file from qla_mr.c.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:04 -04:00
Bart Van Assche
ba0cef2532 scsi: qla2xxx: Include the <asm/unaligned.h> header file from qla_dsd.h
Since the put_unaligned_*() macros are used in this header file, include
the header file that defines these macros.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Fixes: 15b7a68c1d ("scsi: qla2xxx: Introduce the dsd32 and dsd64 data structures") # v5.2-rc1.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:04 -04:00
Bart Van Assche
0184793df2 scsi: qla2xxx: Use tabs instead of spaces for indentation
This patch only modifies whitespace.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:04 -04:00
Bart Van Assche
c1c7178c26 scsi: qla2xxx: Improve Linux kernel coding style conformance
Insert a space where required, surround complex expressions in macros with
parentheses, use the UL suffix instead of the (unsigned long) cast, do not
use line continuations when not necessary and do not explicitly initialize
static variables to zero.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:04 -04:00
Bart Van Assche
8dd9593cc0 scsi: qla2xxx: Really fix qla2xxx_eh_abort()
I'm not sure how this happened but the patch that was intended to fix abort
handling was incomplete. This patch fixes that patch as follows:

 - If aborting the SCSI command failed, wait until the SCSI command
   completes.

 - Return SUCCESS instead of FAILED if an abort attempt races with SCSI
   command completion.

 - Since qla2xxx_eh_abort() increments the sp reference count by calling
   sp_get(), decrement the sp reference count before returning.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Fixes: 219d27d714 ("scsi: qla2xxx: Fix race conditions in the code for aborting SCSI commands")
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:04 -04:00
Bart Van Assche
d2d2b5a574 scsi: qla2xxx: Make qla2x00_abort_srb() again decrease the sp reference count
Since qla2x00_abort_srb() starts with increasing the reference count of
@sp, decrease that same reference count before returning.

Cc: Himanshu Madhani <hmadhani@marvell.com>
Fixes: 219d27d714 ("scsi: qla2xxx: Fix race conditions in the code for aborting SCSI commands") # v5.2.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Himanshu Madhani <hmadhani@marvell.com>
Reviewed-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-12 21:34:04 -04:00
Himanshu Madhani
4d0b32b853 scsi: qla2xxx: Update driver version to 10.01.00.18-k
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-07 18:08:12 -04:00
Quinn Tran
03cc44bf68 scsi: qla2xxx: Allow NVMe IO to resume with short cable pull
Current driver report dev_loss_tmo to 0 for NVMe devices with short cable
pull.  This causes NVMe controller to be freed along with NVMe namespace.
The side affect is IO would stop.  By not setting dev_loss_tmo to 0, NVMe
namespace would stay until cable is plugged back in.  This allows IO to
resume afterward.

[mkp: commit desc]

Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-07 18:08:12 -04:00
Quinn Tran
f00b3428a8 scsi: qla2xxx: Fix hang in fcport delete path
A hang was observed in the fcport delete path when the device was
responding slow and an issue-lip path (results in session termination) was
taken.

Fix this by issuing logo requests unconditionally.

PID: 19491  TASK: ffff8e23e67bb150  CPU: 0   COMMAND: "kworker/0:0"
 #0 [ffff8e2370297bf8] __schedule at ffffffffb4f7dbb0
 #1 [ffff8e2370297c88] schedule at ffffffffb4f7e199
 #2 [ffff8e2370297c98] schedule_timeout at ffffffffb4f7ba68
 #3 [ffff8e2370297d40] msleep at ffffffffb48ad9ff
 #4 [ffff8e2370297d58] qlt_free_session_done at ffffffffc0c32052 [qla2xxx]
 #5 [ffff8e2370297e20] process_one_work at ffffffffb48bcfdf
 #6 [ffff8e2370297e68] worker_thread at ffffffffb48bdca6
 #7 [ffff8e2370297ec8] kthread at ffffffffb48c4f81

Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-07 18:08:12 -04:00
Andrew Vasquez
a36f1443e6 scsi: qla2xxx: Use common update-firmware-options routine for ISP27xx+
Leverage the generic routine, qla24xx_update_fw_options(), for the
configuration of firmware options for ISP27xx/ISP28xx.

Signed-off-by: Andrew Vasquez <andrewv@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-07 18:08:12 -04:00
Arun Easi
9e744591ef scsi: qla2xxx: Fix NVMe port discovery after a short device port loss
The following sequence of event leads to NVME port disappearing:

    - device port shut
    - nvme_fc_unregister_remoteport
    - device port online
    - remote port delete completes
    - relogin is scheduled
    - "post gidpn" message appears due to rscn generation # mismatch

In short, if a device comes back online sooner than an unregister
completion, a mismatch in rscn generation number occurs, which is not
handled correctly during device relogin. Fix this by starting with a redo
of GNL.

When ql2xextended_error_logging is enabled, the re-plugged device's
discovery stops with the following messages printed:

--8<--
qla2xxx [0000:41:00.0]-480d:3: Relogin scheduled.
qla2xxx [0000:41:00.0]-4800:3: DPC handler sleeping.
qla2xxx [0000:41:00.0]-2902:3: qla24xx_handle_relogin_event 21:00:00:24:ff:17:9e:91 DS 0 LS 7 P 0 del 2 cnfl
   (null) rscn 1|2 login 1|2 fl 1
qla2xxx [0000:41:00.0]-28e9:3: qla24xx_handle_relogin_event 1666 21:00:00:24:ff:17:9e:91 post gidpn
qla2xxx [0000:41:00.0]-480e:3: Relogin end.
--8<--

Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-07 18:08:12 -04:00
Andrew Vasquez
26a7779919 scsi: qla2xxx: Correct error handling during initialization failures
Current code misses or fails to account for proper recovery during early
initialization failures:

 - Properly unwind allocations during probe() failures.

 - Protect against non-initialization memory allocations during
   unwinding.

 - Propagate error status during HW initialization.

 - Release SCSI host reference when memory allocations fail.

Signed-off-by: Andrew Vasquez <andrewv@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-07 18:08:12 -04:00
Quinn Tran
f0cecc1eec scsi: qla2xxx: Retry fabric Scan on IOCB queue full
when fabric scan thread encounters IOCB Q Full, schedule a delayed work to
retry fabric scan.

Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-07 18:08:12 -04:00
Quinn Tran
3a4b6cc733 scsi: qla2xxx: Fix premature timer expiration
For any qla2xxx async command, the SRB buffer is used to send it. In
setting up the SRB buffer, the timer for this command is started before all
memory allocation has finished.  Under low memory pressure, memory alloc
can go to sleep and not wake up before the timer expires. Once timer has
expired, the timer thread will access uninitialize fields resulting into
NULL pointer crash.

This patch fixes this crash by moving the start of timer after everything
is setup.

backtrace shows following

PID: 3720   TASK: ffff996928401040  CPU: 0   COMMAND: "qla2xxx_1_dpc"
0 [ffff99652751b698] __schedule at ffffffff965676c7
1 [ffff99652751b728] schedule at ffffffff96567bc9
2 [ffff99652751b738] schedule_timeout at ffffffff965655e8
3 [ffff99652751b7e0] io_schedule_timeout at ffffffff9656726d
4 [ffff99652751b810] congestion_wait at ffffffff95fd8d12
5 [ffff99652751b870] isolate_migratepages_range at ffffffff95fddaf3
6 [ffff99652751b930] compact_zone at ffffffff95fdde96
7 [ffff99652751b980] compact_zone_order at ffffffff95fde0bc
8 [ffff99652751ba20] try_to_compact_pages at ffffffff95fde481
9 [ffff99652751ba80] __alloc_pages_direct_compact at ffffffff9655cc31
10 [ffff99652751bae0] __alloc_pages_slowpath at ffffffff9655d101
11 [ffff99652751bbd0] __alloc_pages_nodemask at ffffffff95fc0e95
12 [ffff99652751bc80] dma_generic_alloc_coherent at ffffffff95e3217f
13 [ffff99652751bcc8] x86_swiotlb_alloc_coherent at ffffffff95e6b7a1
14 [ffff99652751bcf8] qla2x00_rft_id at ffffffffc055b5e0 [qla2xxx]
15 [ffff99652751bd50] qla2x00_loop_resync at ffffffffc0533e71 [qla2xxx]
16 [ffff99652751be68] qla2x00_do_dpc at ffffffffc05210ca [qla2xxx]

PID: 0      TASK: ffffffff96a18480  CPU: 0   COMMAND: "swapper/0"
 0 [ffff99652fc03ae0] machine_kexec at ffffffff95e63674
 1 [ffff99652fc03b40] __crash_kexec at ffffffff95f1ce12
 2 [ffff99652fc03c10] crash_kexec at ffffffff95f1cf00
 3 [ffff99652fc03c28] oops_end at ffffffff9656c758
 4 [ffff99652fc03c50] no_context at ffffffff9655aa7e
 5 [ffff99652fc03ca0] __bad_area_nosemaphore at ffffffff9655ab15
 6 [ffff99652fc03cf0] bad_area_nosemaphore at ffffffff9655ac86
 7 [ffff99652fc03d00] __do_page_fault at ffffffff9656f6b0
 8 [ffff99652fc03d70] do_page_fault at ffffffff9656f915
 9 [ffff99652fc03da0] page_fault at ffffffff9656b758
    [exception RIP: unknown or invalid address]
    RIP: 0000000000000000  RSP: ffff99652fc03e50  RFLAGS: 00010202
    RAX: 0000000000000000  RBX: ffff99652b79a600  RCX: ffff99652b79a760
    RDX: ffff99652b79a600  RSI: ffffffffc0525ad0  RDI: ffff99652b79a600
    RBP: ffff99652fc03e60   R8: ffffffff96a18a18   R9: ffffffff96ee3c00
    R10: 0000000000000002  R11: ffff99652fc03de8  R12: ffff99652b79a760
    R13: 0000000000000100  R14: ffffffffc0525ad0  R15: ffff99652b79a600
    ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
10 [ffff99652fc03e50] qla2x00_sp_timeout at ffffffffc0525af8 [qla2xxx]
11 [ffff99652fc03e68] call_timer_fn at ffffffff95ea7f58
12 [ffff99652fc03ea0] run_timer_softirq at ffffffff95eaa3bd
13 [ffff99652fc03f18] __do_softirq at ffffffff95ea0f05
14 [ffff99652fc03f88] call_softirq at ffffffff9657832c
15 [ffff99652fc03fa0] do_softirq at ffffffff95e2e675
16 [ffff99652fc03fc0] irq_exit at ffffffff95ea1285
17 [ffff99652fc03fd8] smp_apic_timer_interrupt at ffffffff965796c8
18 [ffff99652fc03ff0] apic_timer_interrupt at ffffffff96575df2

Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-07 18:08:12 -04:00
Quinn Tran
8b5292bcfc scsi: qla2xxx: Fix Relogin to prevent modifying scan_state flag
Relogin fails to move forward due to scan_state flag indicating device is
not there. Before relogin process, Session delete process accidently
modified the scan_state flag.

[mkp: typos plus corrected Fixes: sha as reported by sfr]

Fixes: 2dee552102 ("scsi: qla2xxx: Fix login state machine freeze")
Cc: stable@vger.kernel.org
Signed-off-by: Quinn Tran <qutran@marvell.com>
Signed-off-by: Himanshu Madhani <hmadhani@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2019-08-07 18:07:11 -04:00