Increase the default number of commands that the driver tells the
SCSI mid-layer it can do to increase the default performance of the
driver.
Signed-off-by: NChad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

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

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

Drop invalid or unexpected FCoE frames that come into the non-offload path
since the FCoE firmware would not do the filtering for us.
Signed-off-by: NChad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

We need to add a bus reset no-op as without it some of the LUNs attached to a
vport may go offline when the error handler escalates to host reset due to not
having a bus reset handler in the driver. What happens is we escalate to host
reset which does a soft link down/link up to reset the adapter. However with
multiple vports attached it's been observed that if the vports do log back into
the target within 5 seconds, the SCSI layer offlines the devices most likely
due to a TUR timing out to verify that the device is online. Adding a bus
reset handler will cause the TUR to be sent after the bus reset handler where
the devices will still be online if the bus reset is initiated by sg_reset
(which is the case in the test that was failing). The bus reset will succeed
and not needlessly bring the device offline/online.
Signed-off-by: NChad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

We should be using the same logic to do a soft reset of the FCoE function
whether it is initiated via sg_reset or the fc_host issue_lip attribute.
Refactor the host reset and fcoe reset handlers to use the preferred logic
which is currently contained in qedf_eh_host_reset().
Signed-off-by: NChad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Reduce the logging level we set for qed messages pertaining to this PCI
function so that unnecessary messages are not printed in the kernel
message log.
Signed-off-by: NChad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Expose this information for interested applications.
Signed-off-by: NChad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

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

If there are multiple descriptors for a particular type in a clear virtual
link we receive, we will not process it correctly but rather take the last
value. This can cause us not to not flap the virtual link as the value from
the descriptors that we compare against the our stored FCF or fc_lport values
may not match.

Change this to do a comparison when processing the each descriptor instead of at
the end and then set a bool if we need to do the reset.
Signed-off-by: NChad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

We need to check the return code the set_fp_int() callback in case we were
not allocated any fastpath interrupts or there was an error setting up the
fastpath interrupts from the qed perspective.
Signed-off-by: NChad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

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

For libfc to register FDMI attributes we need to do two things:

- Set the appropriate fc_host attributes that libfc will use to form the
  FDMI registration commands
- Set lport->fdmi_enabled to 1
Signed-off-by: NChad Dupuis <chad.dupuis@cavium.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

T6 FCoE support is added in fw version 1.16.45.0 so return error if fw
version < 1.16.45.0 for T6 adapters.
Signed-off-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch removes an extra out label in _fcoe_create function where we
return if creation of FCOE interface is failed.
Signed-off-by: NMilan P. Gandhi <mgandhi@redhat.com>
Acked-by: NJohannes Thumshirn <jth@kernel.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

This patch does a cleanup and fixes few small typos in fcoe.c
Signed-off-by: NMilan P. Gandhi <mgandhi@redhat.com>
Acked-by: NJohannes Thumshirn <jth@kernel.org>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Trivial fix to spelling mistake in debugfs message
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Acked-by: NJames Smart <james.smart@broadcom.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

qla_tgt_cmd.free_work is not used by the qla2xxx driver. Hence remove
that member of struct qla_tgt_cmd.
Signed-off-by: NBart Van Assche <bart.vanassche@sandisk.com>
Acked-by: NHimanshu Madhani <himanshu.madhani@cavium.com>
Reviewed-by: NChristoph Hellwig <hch@lst.de>
Cc: Quinn Tran <quinn.tran@cavium.com>
Cc: Hannes Reinecke <hare@suse.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Andy Grover <agrover@redhat.com>
Cc: David Disseldorp <ddiss@suse.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add null check before indirectly dereferencing pointer task->lldd_task
in statement u32 tag = slot->idx;

Addresses-Coverity-ID: 1373843
Signed-off-by: NGustavo A. R. Silva <garsilva@embeddedor.com>
Reviewed-by: NJohn Garry <john.garry@huawei.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

The newly added suspend/resume support causes harmless warnings when
CONFIG_PM is disabled:

smartpqi/smartpqi_init.c:5147:12: error: 'pqi_ctrl_wait_for_pending_io' defined but not used [-Werror=unused-function]
smartpqi/smartpqi_init.c:2019:13: error: 'pqi_wait_until_lun_reset_finished' defined but not used [-Werror=unused-function]
smartpqi/smartpqi_init.c:2013:13: error: 'pqi_wait_until_scan_finished' defined but not used [-Werror=unused-function]

We can avoid the warnings by removing the #ifdef around the handlers and
instead marking them as __maybe_unused, which will let gcc drop the
unused code silently.

Fixes: f44d210312a6 ("scsi: smartpqi: add suspend and resume support")
Signed-off-by: NArnd Bergmann <arnd@arndb.de>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

When copying attributes, the len argument was padded out and the
resulting memcpy() would copy beyond the end of the source buffer.
Avoid this, and use size_t for val_len to avoid all the casts.
Similarly, avoid source buffer casts and use void *.

Additionally enforces val_len can be represented by u16 and that the DMA
buffer was not overflowed. Fixes the size of mfa, which is not
FC_FDMI_PORT_ATTR_MAXFRAMESIZE_LEN (but it will be padded up to 4). This
was noticed by the future CONFIG_FORTIFY_SOURCE checks.

Cc: Daniel Micay <danielmicay@gmail.com>
Signed-off-by: NKees Cook <keescook@chromium.org>
Acked-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In storvsc driver, inbound messages do not go through inbound lock.  The
only effect of this lock was is to provide a barrier for connect and
remove logic.
Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

In 4.12-rc1, new functions were added to support iterating over elements
in the vmbus event ring. This patch uses them to simplify the ring
buffer handling in virtual SCSI driver as well.
Signed-off-by: NStephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Enable probe for T6 adapters, add code to flash T6 firmware and firmware
config file, use T6 specific macros.
Signed-off-by: NVarun Prakash <varun@chelsio.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

iscsiadm session login can fail with the following error:

iscsiadm: Could not login to [iface: default, target: iqn.1986-03.com...
iscsiadm: initiator reported error (9 - internal error)

When /etc/iscsi/iscsid.conf sets node.session.cmds_max = 4096, it
results in 64K-sized kmallocs per session.  A system under fragmented
slab pressure may not have any 64K objects available and fail iscsiadm
session login. Even though memory objects of a smaller size are
available, the large order allocation ends up failing.

The kernel prints a warning and does dump_stack, like below:

iscsid: page allocation failure: order:4, mode:0xc0d0
CPU: 0 PID: 2456 Comm: iscsid Not tainted 4.1.12-61.1.28.el6uek.x86_64 #2
Call Trace:
 [<ffffffff816c6e40>] dump_stack+0x63/0x83
 [<ffffffff8118e58a>] warn_alloc_failed+0xea/0x140
 [<ffffffff81191df9>] __alloc_pages_slowpath+0x409/0x760
 [<ffffffff81192401>] __alloc_pages_nodemask+0x2b1/0x2d0
 [<ffffffffa048f6c0>] ? dev_attr_host_ipaddress+0x20/0xffffffffffffc722
 [<ffffffff811dc38f>] alloc_pages_current+0xaf/0x170
 [<ffffffff81192581>] alloc_kmem_pages+0x31/0xd0
 [<ffffffffa048f600>] ? iscsi_transport_group+0x20/0xffffffffffffc7e2
 [<ffffffff811ad738>] kmalloc_order+0x18/0x50
 [<ffffffff811ad7a4>] kmalloc_order_trace+0x34/0xe0
 [<ffffffff8146ee30>] ? transport_remove_classdev+0x70/0x70
 [<ffffffff811e843d>] __kmalloc+0x27d/0x2a0
 [<ffffffff810c8cbd>] ? complete_all+0x4d/0x60
 [<ffffffffa04af299>] iscsi_pool_init+0x69/0x160 [libiscsi]
 [<ffffffff81465d90>] ? device_initialize+0xb0/0xd0
 [<ffffffffa04af510>] iscsi_session_setup+0x180/0x2f4 [libiscsi]
 [<ffffffffa04c5a60>] ? iscsi_max_lun+0x20/0xfffffffffffffa9e [iscsi_tcp]
 [<ffffffffa04c531f>] iscsi_sw_tcp_session_create+0xcf/0x150 [iscsi_tcp]
 [<ffffffffa04c5a60>] ? iscsi_max_lun+0x20/0xfffffffffffffa9e [iscsi_tcp]
 [<ffffffffa048a633>] iscsi_if_create_session+0x33/0xd0
 [<ffffffffa04c5a60>] ? iscsi_max_lun+0x20/0xfffffffffffffa9e [iscsi_tcp]
 [<ffffffffa048abd8>] iscsi_if_recv_msg+0x508/0x8c0 [scsi_transport_iscsi]
 [<ffffffff811922eb>] ? __alloc_pages_nodemask+0x19b/0x2d0
 [<ffffffff811e6d69>] ? __kmalloc_node_track_caller+0x209/0x2c0
 [<ffffffffa048b00c>] iscsi_if_rx+0x7c/0x200 [scsi_transport_iscsi]
 [<ffffffff81623dc6>] netlink_unicast+0x126/0x1c0
 [<ffffffff8162468c>] netlink_sendmsg+0x36c/0x400
 [<ffffffff815d2fed>] sock_sendmsg+0x4d/0x60
 [<ffffffff815d596a>] ___sys_sendmsg+0x30a/0x330
 [<ffffffff811bc72c>] ? handle_pte_fault+0x20c/0x230
 [<ffffffff811bc90c>] ? __handle_mm_fault+0x1bc/0x330
 [<ffffffff811bcb32>] ? handle_mm_fault+0xb2/0x1a0
 [<ffffffff815d5b99>] __sys_sendmsg+0x49/0x90
 [<ffffffff815d5bf9>] SyS_sendmsg+0x19/0x20
 [<ffffffff816cbb2e>] system_call_fastpath+0x12/0x71

Use kvzalloc for iscsi_pool in iscsi_pool_init.
Signed-off-by: NKyle Fortin <kyle.fortin@oracle.com>
Tested-by: NKyle Fortin <kyle.fortin@oracle.com>
Reviewed-by: NJoseph Slember <joe.slember@oracle.com>
Reviewed-by: NLance Hartmann <lance.hartmann@oracle.com>
Acked-by: NLee Duncan <lduncan@suse.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Reviewed-by: NGerry Morong <gerry.morong@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Instead of rewriting write/readq, use existing functions
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NCorentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Add module parameters to disable heartbeat support and to disable
shutting down the controller when a controller is taken offline.
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Better initialization of linked list heads.
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Display the RAID level via sysfs
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

 - make all references to RAID bypass consistent throughout driver.
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Improved formatting of information displayed when devices
are added/removed from the system.
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

Increase the timeout on admin commands from 3 seconds to 60
seconds and added a check for controller crash in the loop
where the driver polls for admin command completion.
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

enhance mapping of RAID path errors to Linux SCSI host
error codes.
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

- Improve controller branding support.
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

improve support for taking controller offline.
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

- Improve handling of offline devices.
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

set the internal flag that causes I/O to be sent down the
RAID path when the AIO path is disabled
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

add support for actions to take when controller goes offline.
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>

make the queue depth for LVs the same as the maximum
I/Os supported by the controller
Reviewed-by: NScott Benesh <scott.benesh@microsemi.com>
Signed-off-by: NKevin Barnett <kevin.barnett@microsemi.com>
Signed-off-by: NDon Brace <don.brace@microsemi.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>