Fix comments style (use kernel-doc style) and content to clarify some
functions. Also fix some functions signature indentation and remove a
useless blank line in sd_zbc_read_zones().

No functional change is introduced by this patch.
Signed-off-by: NDamien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Move standard macro definitions for the zone types and zone conditions
to scsi_proto.h together with the definitions related to the REPORT
ZONES command. While at it, define all values in the enums to be clear.

Also remove unnecessary includes in sd_zbc.c.

No functional change is introduced by this patch.
Signed-off-by: NDamien Le Moal <damien.lemoal@wdc.com>
Reviewed-by: NBart Van Assche <Bart.VanAssche@wdc.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Always use bsg_job->reply instead of scsi_req(bsg_job->req)->sense), as
they always point to the same memory.

Never set scsi_req(bsg_job->req)->result and we'll set that value
through bsg_job_done.

[mkp: applied by hand, fixed whitespace]
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: NHimanshu Madhani <himanshu.madhani@cavium.com>
Tested-by: NHimanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

As a user of bsg-lib the SAS transport should not poke into request
internals but use the bsg_job fields instead.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

bsg_job_done takes care of updating the scsi_request structure fields.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

We already support 256 or more segments as long as the architecture
supports SG chaining (all the ones that matter do), so removed the weird
playing with limits from the job handler.
Signed-off-by: NChristoph Hellwig <hch@lst.de>
Reviewed-by: NHannes Reinecke <hare@suse.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Remove redundant variables in quedi_fw.c that are set but not used.
Signed-off-by: NChristos Gkekas <chris.gekas@gmail.com>
Acked-by: NManish Rangankar <Manish.Rangankar@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Based on the FC4 type, login will proceed to either FCP or FC-NVMe
remote ports.
Signed-off-by: NGiridhar Malavali <giridhar.malavali@cavium.com>
Signed-off-by: NHimanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In some environments, user can choose to not enable SCSI-MQ but wants to
use FC-NVMe feature of the driver. Since driver relies on Q-Pairs to
allocate FC-NVMe resources, use existing module parameter to create
Q-Pairs when FC-NVMe is enabled.
Signed-off-by: NHimanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: NEwan D. Milne <emilne@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Signed-off-by: NHimanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

If we discovered a topology that is N2N then we will issue a login to
the target. If our WWPN is bigger than the target's WWPN then we will
initiate login, otherwise we will just wait for the target to initiate
login.

[mkp: many whitespace errors]
Signed-off-by: NDuane Grigsby <duane.grigsby@cavium.com>
Signed-off-by: NMichael Hernandez <michael.hernandez@cavium.com>
Signed-off-by: NHimanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Tested-by: NEwan D. Milne <emilne@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The MBC_GET_PORT_DATABASE command normally checks the port state
information. This patch allows it to save that info in the fcport
structure and ignore the check if the query flag is set.

[mkp: typo]
Signed-off-by: NDuane Grigsby <duane.grigsby@cavium.com>
Signed-off-by: NHimanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Signed-off-by: NHimanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

[mkp: fixed whitespace]
Signed-off-by: NHimanshu Madhani <himanshu.madhani@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The ! has higher precedence than the & operation.  I've added
parenthesis so this works as intended.

Fixes: 952c303b ("scsi: lpfc: Ensure io aborts interlocked with the target.")
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Functions ahc_devlimited_syncrate and ahc_linux_initialize_scsi_bus are
declared static in their prototypes but are missing in their
definitions, so add the missing static.

Cleans up sparse warnings: symbol 'ahc_devlimited_syncrate' was not
declared. Should it be static?  symbol 'ahc_linux_initialize_scsi_bus'
was not declared. Should it be static?
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Reviewed-by: NJohannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

gcc-8 points out a logic error that has existed since the start of the
git history:

drivers/scsi/nsp32.c: In function 'nsp32_selection_autoscsi':
drivers/scsi/nsp32.c:607:27: error: bitwise comparison always evaluates to false [-Werror=tautological-compare]
  if(((phase & BUSMON_BSY) == 1) || (phase & BUSMON_SEL) == 1) {
                           ^~

Presumably the author intended to check if one of two bits was set, so
that's what I'm changing the code to. This will obviously change the
behavior of the code, hopefully to do the right thing, but I have not
tested this or checked if the new "(phase & BUSMON_BSY) || (phase &
BUSMON_SEL)" condition should indeed be treated as a fatal error.
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Acked-by: NGOTO Masanori <gotom@debian.or.jp>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

We could allocate less memory than intended because we do:

	bfad->regdata = kzalloc(len << 2, GFP_KERNEL);

The shift can overflow leading to a crash.  This is debugfs code so the
impact is very small.  I fixed the network version of this in March with
commit 13e2d518 ("bna: integer overflow bug in debugfs").

Fixes: ab2a9ba1 ("[SCSI] bfa: add debugfs support")
Signed-off-by: NDan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In case of mgmt cmds, task->hdr is dereferenced after transmitting the
pdu in iscsi_tcp_task_xmit(). To handle this case current code
increments the Tx skb reference count and frees the skb in
cxgbi_cleanup_task(). In some error cases this results in skb leak.

To fix this in case of mgmt cmds, allocate a separate buffer for iSCSI
hdr and free this buffer in cxgbi_cleanup_task().
Signed-off-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In case of connection reset Tx skb queue can have some skbs which are
not transmitted so purge Tx skb queue in release_offload_resources() to
avoid skb leak.
Signed-off-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In case of vlan pass 0 as ifindex to find route instead of passing
real_dev ifindex, if we pass real_dev ifindex then
ip_route_output_ports() and ip6_route_output() will check for route
through real_dev not through vlan interface.
Signed-off-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Update the description of 'scsi_logging_level' from 8 4-bit nibbles to
the (pre-git) reality of 10 3-bit bitfields.
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Reviewed-by: NKyle Fortin <kyle.fortin@oracle.com>
Reviewed-by: NSteffen Maier <maier@linux.vnet.ibm.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Version 11.4.0.1
Signed-off-by: NJitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Signed-off-by: NJitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The patch fixes errors reported by tools like smatch:
 - removes unused structure fields
 - removes dead code
 - fixes code identation
Signed-off-by: NJitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Provide driver version in host data to FW.
Signed-off-by: NJitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add version 1 of GET_HBA_NAME to fetch port specific IQN first.
If it fails use version 0 to get the IQN.

To use this old IQN names of interfaces needs to be cleared from
the iscsiadm database.
Signed-off-by: NJitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

be_cmd_get_initname pulls GET_HBA_NAME response of 276 bytes in embedded
WRB buffer of 236 bytes.

Use non-embedded functions to issue the IOCTL.
Signed-off-by: NJitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

beiscsi_modify_eq_delay is using embedded command to send request of 788
bytes in 236 bytes buffer. Non-embedded command needs to be used in such
cases.

Use mgmt_alloc_cmd_data fn modified to allow passing of subsystem.  Use
mgmt_exec_nonemb_cmd fn modified to allow setting of callback.
Signed-off-by: NJitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In beiscsi_dev_probe, allocated msi_name does not get freed and enabled
HW interrupts are not disabled in iscsi_host_add error case.

Add beiscsi_free_irqs fn to handle the cleanup in probe and disable port.
Signed-off-by: NJitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

mgmt_open_connection is expected to return tag not errno.

In error case, just return invalid tag 0.
Signed-off-by: NJitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The boot flags exported through sysfs was wrongly reverted to 2.  Use
boot flag 3 required per spec.

Bit 0 Block valid flag
Bit 1 Firmware booting selected
Signed-off-by: NJitendra Bhivare <jitendra.bhivare@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Bump mpt3sas driver version to v16.100.00.00
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Adding PNP ID of Mercator i.e. SAS3616 HBA device. Its device ID is
0xD1 and vendor ID is 0x1000.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Enclosure handles are not updated after host reset.  As a result, driver
device structure is holding previously assigned enclosure handle which
is different from the enclosure handle populated in the corresponding
device page.

Modified the driver to update devices enclosure handles after host reset
to current value by referring the enclosure handles from corresponding
device pages
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Display chassis slot information along with other drive location
parameters such as slot number and connector name in the logs if
chassis slot validity bit is set in 'SAS Enclosure Page 0'.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Updated MPI headers to v2.00.48
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

scsi: mpt3sas: Fix IO error occurs on pulling out a drive from RAID1 volume created on two SATA drive

Whenever an I/O for a RAID volume fails with IOCStatus
MPI2_IOCSTATUS_SCSI_IOC_TERMINATED and SCSIStatus equal to
(MPI2_SCSI_STATE_TERMINATED | MPI2_SCSI_STATE_NO_SCSI_STATUS) then
return the I/O to SCSI midlayer with "DID_RESET" (i.e. retry the IO
infinite times) set in the host byte.

Previously, the driver was completing the I/O with "DID_SOFT_ERROR"
which causes the I/O to be quickly retried. However, firmware needed
more time and hence I/Os were failing.
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

For Dev Handles whose value is less than HBA's phys count number, driver
would return HBA's SAS address value. As a result, for a Virtual SES
device the driver was returning the HBA's SAS address. Updated the
driver to return Virtual SES' SAS address.

[mkp: clarified commit message]
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

To reduce the memory footprint of the driver in the kdump kernel, we
apply the following settings when reset_devices is set:

1. Use single MSI-x vector.
2. Disable RDPQ mode.
3. Set sg_table_size to 32 by default.
4) Set SCSI IO Queue depth to 200.

[mkp: fixed commit message]
Signed-off-by: NSreekanth Reddy <Sreekanth.Reddy@broadcom.com>
Reviewed-by: NTomas Henzl <thenzl@redhat.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>