If the firmware cannot find the command specified then return SUCCESS to the
error handler so as not to needlessly escalate. Also cleanup the resources for
the command since we cannot expect the original command to returned in
interrupt context.
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Increment the address by 4 on each iteration.
Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
The window address inserted into the dump should be have been
incremented by 1 rather than 4.
Signed-off-by: Joe Carnuccio <joe.carnuccio@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
If an adapter reset is already in progress, do not schedule another one when
we receive an invalid status handle.
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
When the driver reads state values from the hw it might happen that
different values are read in subsequent reads and this can cause problems,
this may lead to a timeout in this function and a non working adapter.
Cc: Adam Radford <aradford@gmail.com>
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Reviewed-by: Shintaro Minemoto <fj3207hq@aa.jp.fujitsu.com>
Acked-by: Sumit Saxena <sumit.saxena@lsi.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
There is an error with the medium access timeout feature of the sd driver. The
sdkp->medium_access_timed_out value is reset to zero in sd_done() in the wrong
place. Currently it is reset to zero only when a command returns sense data.
This can result in cases where the medium access check falsely triggers from
timed out commands which are hours or days apart.
For example, an I/O command times out and is aborted. It then retries and
succeeds. But with no sense data generated and returned, the
medium_access_timed_out value is not reset. If no sd command returns sense
data, then the next command to time out (however far in time from the first
failure) will trigger the medium access timeout and put the device offline.
The resetting of sdkp->medium_access_timed_out should occur before the check
for sense data.
To reproduce using scsi_debug, use SCSI_DEBUG_OPT_TIMEOUT or
SCSI_DEBUG_OPT_MAC_TIMEOUT to force an I/O command to timeout. Then, remove
the opt value so the I/O will succeed on retry. Perform more I/O as desired.
Finally, repeat the process to make a new I/O command time out. Without the
patch, the device will be marked offline even though many I/O commands have
succeeded between the 2 instances of timed out commands.
Signed-off-by: David Jeffery <djeffery@redhat.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
->queuecommand returns '0' for successful command submission,
so we need to set the correct SCSI midlayer return value
when calling scsi_log_completion().
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reported-by: Robert Elliott <elliott@hp.com>
Cc: Stephen Cameron <scameron@beardog.cce.hp.com>
Tested-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Instead of letting the ULD play games with the prep_fn move back to
the model of a central prep_fn with a callback to the ULD. This
already cleans up and shortens the code by itself, and will be required
to properly support blk-mq in the SCSI midlayer.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
By folding scsi_end_request into its only caller we can significantly clean
up the completion logic. We can use simple goto labels now to only have
a single place to finish or requeue command there instead of the previous
convoluted logic.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Nicholas Bellinger <nab@linux-iscsi.org>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Instead of trying to guess when we have a BIDI buffer in scsi_release_buffers
add a function to explicitly free the BIDI ressoures in the one place that
handles them. This avoids needing a special __scsi_release_buffers for the
case where we already have freed the request as well.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
In line with practice for module parameters, we're adding a build-time
check that sysfs files aren't world-writable.
Cc: Lindar Liu <lindar_liu@usish.com>
Cc: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Pull networking fixes from David Miller:
1) e1000e computes header length incorrectly wrt vlans, fix from Vlad
Yasevich.
2) ns_capable() check in sock_diag netlink code, from Andrew
Lutomirski.
3) Fix invalid queue pairs handling in virtio_net, from Amos Kong.
4) Checksum offloading busted in sxgbe driver due to incorrect
descriptor layout, fix from Byungho An.
5) Fix build failure with SMC_DEBUG set to 2 or larger, from Zi Shen
Lim.
6) Fix uninitialized A and X registers in BPF interpreter, from Alexei
Starovoitov.
7) Fix arch dependencies of candence driver.
8) Fix netlink capabilities checking tree-wide, from Eric W Biederman.
9) Don't dump IFLA_VF_PORTS if netlink request didn't ask for it in
IFLA_EXT_MASK, from David Gibson.
10) IPV6 FIB dump restart doesn't handle table changes that happen
meanwhile, causing the code to loop forever or emit dups, fix from
Kumar Sandararajan.
11) Memory leak on VF removal in bnx2x, from Yuval Mintz.
12) Bug fixes for new Altera TSE driver from Vince Bridgers.
13) Fix route lookup key in SCTP, from Xugeng Zhang.
14) Use BH blocking spinlocks in SLIP, as per a similar fix to CAN/SLCAN
driver. From Oliver Hartkopp.
15) TCP doesn't bump retransmit counters in some code paths, fix from
Eric Dumazet.
16) Clamp delayed_ack in tcp_cubic to prevent theoretical divides by
zero. Fix from Liu Yu.
17) Fix locking imbalance in error paths of HHF packet scheduler, from
John Fastabend.
18) Properly reference the transport module when vsock_core_init() runs,
from Andy King.
19) Fix buffer overflow in cdc_ncm driver, from Bjørn Mork.
20) IP_ECN_decapsulate() doesn't see a correct SKB network header in
ip_tunnel_rcv(), fix from Ying Cai.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (132 commits)
net: macb: Fix race between HW and driver
net: macb: Remove 'unlikely' optimization
net: macb: Re-enable RX interrupt only when RX is done
net: macb: Clear interrupt flags
net: macb: Pass same size to DMA_UNMAP as used for DMA_MAP
ip_tunnel: Set network header properly for IP_ECN_decapsulate()
e1000e: Restrict MDIO Slow Mode workaround to relevant parts
e1000e: Fix issue with link flap on 82579
e1000e: Expand workaround for 10Mb HD throughput bug
e1000e: Workaround for dropped packets in Gig/100 speeds on 82579
net/mlx4_core: Don't issue PCIe speed/width checks for VFs
net/mlx4_core: Load the Eth driver first
net/mlx4_core: Fix slave id computation for single port VF
net/mlx4_core: Adjust port number in qp_attach wrapper when detaching
net: cdc_ncm: fix buffer overflow
Altera TSE: ALTERA_TSE should depend on HAS_DMA
vsock: Make transport the proto owner
net: sched: lock imbalance in hhf qdisc
net: mvmdio: Check for a valid interrupt instead of an error
net phy: Check for aneg completion before setting state to PHY_RUNNING
...
On suspend, _scsih_suspend calls mpt2sas_base_free_resources, which
in turn calls pci_disable_device if the device is enabled prior to
suspending. However, _scsih_suspend also calls pci_disable_device
itself.
Thus, in the event that the device is enabled prior to suspending,
pci_disable_device will be called twice. This patch removes the
duplicate call to pci_disable_device in _scsi_suspend as it is both
unnecessary and results in a kernel oops.
Signed-off-by: Tyler Stachecki <tstache1@binghamton.edu>
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
It is possible by passing a netlink socket to a more privileged
executable and then to fool that executable into writing to the socket
data that happens to be valid netlink message to do something that
privileged executable did not intend to do.
To keep this from happening replace bare capable and ns_capable calls
with netlink_capable, netlink_net_calls and netlink_ns_capable calls.
Which act the same as the previous calls except they verify that the
opener of the socket had the desired permissions as well.
Reported-by: Andy Lutomirski <luto@amacapital.net>
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes a corner case in the previous USB Deadlock fix patch (12023e7
[SCSI] Fix USB deadlock caused by SCSI error handling).
The scenario is abort command, set flag, abort completes, send TUR, TUR
doesn't return, so we now try to abort the TUR, but scsi_abort_eh_cmnd()
will skip the abort because the flag is set and move straight to reset.
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
USB requires that every command be aborted first before we escalate to reset.
In particular, USB will deadlock if we try to reset first before aborting the
command.
Unfortunately, the flag we use to tell if a command has already been aborted:
SCSI_EH_ABORT_SCHEDULED is not cleared properly leading to cases where we can
requeue a command with the flag set and proceed immediately to reset if it
fails (thus causing USB to deadlock).
Fix by clearing the SCSI_EH_ABORT_SCHEDULED flag if it has been set. Which
means this will be the second time scsi_abort_command() has been called for
the same command. IE the first abort went out, did its thing, but now the
same command has timed out again.
So this flag gets cleared, and scsi_abort_command() returns FAILED, and _no_
asynchronous abort is being scheduled. scsi_times_out() will then proceed to
call scsi_eh_scmd_add(). But as we've cleared the SCSI_EH_ABORT_SCHEDULED
flag the SCSI_EH_CANCEL_CMD flag will continue to be set, and the command will
be aborted with the main SCSI EH routine.
Reported-by: Alan Stern <stern@rowland.harvard.edu>
Tested-by: Andreas Reis <andreas.reis@gmail.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
We're seeing a case where the contents of scmd->result isn't being reset after
a SCSI command encounters an error, is resubmitted, times out and then gets
handled. The error handler acts on the stale result of the previous error
instead of the timeout. Fix this by properly zeroing the scmd->status before
the command is resubmitted.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
We unconditionally execute scsi_eh_get_sense() to make sure all failed
commands that should have sense attached, do. However, the routine forgets
that some commands, because of the way they fail, will not have any sense code
... we should not bother them with a REQUEST_SENSE command. Fix this by
testing to see if we actually got a CHECK_CONDITION return and skip asking for
sense if we don't.
Tested-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Patch
commit 0479633686
Author: Christoph Hellwig <hch@infradead.org>
Date: Thu Feb 20 14:20:55 2014 -0800
[SCSI] do not manipulate device reference counts in scsi_get/put_command
Introduced a use after free:I in the kill case of scsi_prep_return we have to
release our device reference, but we do this trying to reference the just
freed command. Use the local sdev pointer instead.
Fixes: 0479633686
Reported-by: Joe Lawrence <joe.lawrence@stratus.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Patch
commit 0479633686
Author: Christoph Hellwig <hch@infradead.org>
Date: Thu Feb 20 14:20:55 2014 -0800
[SCSI] do not manipulate device reference counts in scsi_get/put_command
Introduced a use after free: when scsi_init_io fails we have to release our
device reference, but we do this trying to reference the just freed command.
Add a local scsi_device pointer to fix this.
Fixes: 0479633686
Reported-by: Sander Eikelenboom <linux@eikelenboom.it>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Initialize local variable trans_support before it is used rather
than after. It is supposed to contain the value of a register on the
controller containing bits that describe which transport modes the
controller supports (e.g. "performant", "ioaccel1", "ioaccel2"). A
NULL pointer dereference will almost certainly occur if trans_support
is not initialized at the right point. If for example the uninitialized
trans_support value does not have the bit set for ioaccel2 support when it
should be, then ioaccel2_alloc_cmds_and_bft() will not get called as it
should be and the h->ioaccel2_blockFetchTable array will remain NULL
instead of being allocated. Too late, trans_support finally gets
initialized with the correct value with ioaccel2 mode bit set,
which later causes calc_bucket_map() to be called to fill in
h->ioaccel2_blockFetchTable[]. However h->ioaccel2_blockFetchTable
is NULL because it didn't get allocated because earlier trans_support
wasn't initialized at the right point.
Fixes: e1f7de0cdd
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Reported-by: Baoquan He <bhe@redhat.com>
Tested-by: Baoquan He <bhe@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Store the pointer to the page there, so we can always safely
reference it from end_io context where ->bio may have been
cleared.
Signed-off-by: Jens Axboe <axboe@fb.com>
This was used in the olden days, back when onions were proper
yellow. Basically it mapped to the current buffer to be
transferred. With highmem being added more than a decade ago,
most drivers map pages out of a bio, and rq->buffer isn't
pointing at anything valid.
Convert old style drivers to just use bio_data().
For the discard payload use case, just reference the page
in the bio.
Signed-off-by: Jens Axboe <axboe@fb.com>
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Merge tag 'v3.15-rc1' into for-3.16/core
We don't like this, but things have diverged with the blk-mq fixes
in 3.15-rc1. So merge it in.
This patch fixes I/O errors with the sym53c8xx_2 driver when the disk
returns QUEUE FULL status.
When the controller encounters an error (including QUEUE FULL or BUSY
status), it aborts all not yet submitted requests in the function
sym_dequeue_from_squeue.
This function aborts them with DID_SOFT_ERROR.
If the disk has full tag queue, the request that caused the overflow is
aborted with QUEUE FULL status (and the scsi midlayer properly retries
it until it is accepted by the disk), but the sym53c8xx_2 driver aborts
the following requests with DID_SOFT_ERROR --- for them, the midlayer
does just a few retries and then signals the error up to sd.
The result is that disk returning QUEUE FULL causes request failures.
The error was reproduced on 53c895 with COMPAQ BD03685A24 disk
(rebranded ST336607LC) with command queue 48 or 64 tags. The disk has
64 tags, but under some access patterns it return QUEUE FULL when there
are less than 64 pending tags. The SCSI specification allows returning
QUEUE FULL anytime and it is up to the host to retry.
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull yet more networking updates from David Miller:
1) Various fixes to the new Redpine Signals wireless driver, from
Fariya Fatima.
2) L2TP PPP connect code takes PMTU from the wrong socket, fix from
Dmitry Petukhov.
3) UFO and TSO packets differ in whether they include the protocol
header in gso_size, account for that in skb_gso_transport_seglen().
From Florian Westphal.
4) If VLAN untagging fails, we double free the SKB in the bridging
output path. From Toshiaki Makita.
5) Several call sites of sk->sk_data_ready() were referencing an SKB
just added to the socket receive queue in order to calculate the
second argument via skb->len. This is dangerous because the moment
the skb is added to the receive queue it can be consumed in another
context and freed up.
It turns out also that none of the sk->sk_data_ready()
implementations even care about this second argument.
So just kill it off and thus fix all these use-after-free bugs as a
side effect.
6) Fix inverted test in tcp_v6_send_response(), from Lorenzo Colitti.
7) pktgen needs to do locking properly for LLTX devices, from Daniel
Borkmann.
8) xen-netfront driver initializes TX array entries in RX loop :-) From
Vincenzo Maffione.
9) After refactoring, some tunnel drivers allow a tunnel to be
configured on top itself. Fix from Nicolas Dichtel.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (46 commits)
vti: don't allow to add the same tunnel twice
gre: don't allow to add the same tunnel twice
drivers: net: xen-netfront: fix array initialization bug
pktgen: be friendly to LLTX devices
r8152: check RTL8152_UNPLUG
net: sun4i-emac: add promiscuous support
net/apne: replace IS_ERR and PTR_ERR with PTR_ERR_OR_ZERO
net: ipv6: Fix oif in TCP SYN+ACK route lookup.
drivers: net: cpsw: enable interrupts after napi enable and clearing previous interrupts
drivers: net: cpsw: discard all packets received when interface is down
net: Fix use after free by removing length arg from sk_data_ready callbacks.
Drivers: net: hyperv: Address UDP checksum issues
Drivers: net: hyperv: Negotiate suitable ndis version for offload support
Drivers: net: hyperv: Allocate memory for all possible per-pecket information
bridge: Fix double free and memory leak around br_allowed_ingress
bonding: Remove debug_fs files when module init fails
i40evf: program RSS LUT correctly
i40evf: remove open-coded skb_cow_head
ixgb: remove open-coded skb_cow_head
igbvf: remove open-coded skb_cow_head
...
Pull SCSI target updates from Nicholas Bellinger:
"Here are the target pending updates for v3.15-rc1. Apologies in
advance for waiting until the second to last day of the merge window
to send these out.
The highlights this round include:
- iser-target support for T10 PI (DIF) offloads (Sagi + Or)
- Fix Task Aborted Status (TAS) handling in target-core (Alex Leung)
- Pass in transport supported PI at session initialization (Sagi + MKP + nab)
- Add WRITE_INSERT + READ_STRIP T10 PI support in target-core (nab + Sagi)
- Fix iscsi-target ERL=2 ASYNC_EVENT connection pointer bug (nab)
- Fix tcm_fc use-after-free of ft_tpg (Andy Grover)
- Use correct ib_sg_dma primitives in ib_isert (Mike Marciniszyn)
Also, note the virtio-scsi + vhost-scsi changes to expose T10 PI
metadata into KVM guest have been left-out for now, as there where a
few comments from MST + Paolo that where not able to be addressed in
time for v3.15. Please expect this feature for v3.16-rc1"
* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (43 commits)
ib_srpt: Use correct ib_sg_dma primitives
target/tcm_fc: Rename ft_tport_create to ft_tport_get
target/tcm_fc: Rename ft_{add,del}_lport to {add,del}_wwn
target/tcm_fc: Rename structs and list members for clarity
target/tcm_fc: Limit to 1 TPG per wwn
target/tcm_fc: Don't export ft_lport_list
target/tcm_fc: Fix use-after-free of ft_tpg
target: Add check to prevent Abort Task from aborting itself
target: Enable READ_STRIP emulation in target_complete_ok_work
target/sbc: Add sbc_dif_read_strip software emulation
target: Enable WRITE_INSERT emulation in target_execute_cmd
target/sbc: Add sbc_dif_generate software emulation
target/sbc: Only expose PI read_cap16 bits when supported by fabric
target/spc: Only expose PI mode page bits when supported by fabric
target/spc: Only expose PI inquiry bits when supported by fabric
target: Pass in transport supported PI at session initialization
target/iblock: Fix double bioset_integrity_free bug
Target/sbc: Initialize COMPARE_AND_WRITE write_sg scatterlist
target/rd: T10-Dif: RAM disk is allocating more space than required.
iscsi-target: Fix ERL=2 ASYNC_EVENT connection pointer bug
...
Pull async SCSI resume support from Dan Williams:
"Allow disks and other devices to resume in parallel.
This provides a tangible speed up for a non-esoteric use case (laptop
resume):
https://01.org/suspendresume/blogs/tebrandt/2013/hard-disk-resume-optimization-simpler-approach"
* 'async-scsi-resume' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci:
scsi: async sd resume
Several spots in the kernel perform a sequence like:
skb_queue_tail(&sk->s_receive_queue, skb);
sk->sk_data_ready(sk, skb->len);
But at the moment we place the SKB onto the socket receive queue it
can be consumed and freed up. So this skb->len access is potentially
to freed up memory.
Furthermore, the skb->len can be modified by the consumer so it is
possible that the value isn't accurate.
And finally, no actual implementation of this callback actually uses
the length argument. And since nobody actually cared about it's
value, lots of call sites pass arbitrary values in such as '0' and
even '1'.
So just remove the length argument from the callback, that way there
is no confusion whatsoever and all of these use-after-free cases get
fixed as a side effect.
Based upon a patch by Eric Dumazet and his suggestion to audit this
issue tree-wide.
Signed-off-by: David S. Miller <davem@davemloft.net>
async_schedule() sd resume work to allow disks and other devices to
resume in parallel.
This moves the entirety of scsi_device resume to an async context to
ensure that scsi_device_resume() remains ordered with respect to the
completion of the start/stop command. For the duration of the resume,
new command submissions (that do not originate from the scsi-core) will
be deferred (BLKPREP_DEFER).
It adds a new ASYNC_DOMAIN_EXCLUSIVE(scsi_sd_pm_domain) as a container
of these operations. Like scsi_sd_probe_domain it is flushed at
sd_remove() time to ensure async ops do not continue past the
end-of-life of the sdev. The implementation explicitly refrains from
reusing scsi_sd_probe_domain directly for this purpose as it is flushed
at the end of dpm_resume(), potentially defeating some of the benefit.
Given sdevs are quiesced it is permissible for these resume operations
to bleed past the async_synchronize_full() calls made by the driver
core.
We defer the resolution of which pm callback to call until
scsi_dev_type_{suspend|resume} time and guarantee that the callback
parameter is never NULL. With this in place the type of resume
operation is encoded in the async function identifier.
There is a concern that async resume could trigger PSU overload. In the
enterprise, storage enclosures enforce staggered spin-up regardless of
what the kernel does making async scanning safe by default. Outside of
that context a user can disable asynchronous scanning via a kernel
command line or CONFIG_SCSI_SCAN_ASYNC. Honor that setting when
deciding whether to do resume asynchronously.
Inspired by Todd's analysis and initial proposal [2]:
https://01.org/suspendresume/blogs/tebrandt/2013/hard-disk-resume-optimization-simpler-approach
Cc: Len Brown <len.brown@intel.com>
Cc: Phillip Susi <psusi@ubuntu.com>
[alan: bug fix and clean up suggestion]
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Suggested-by: Todd Brandt <todd.e.brandt@linux.intel.com>
[djbw: kick all resume work to the async queue]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Pull block layer fixes from Jens Axboe:
"A small collection of fixes that should go in before -rc1. The pull
request contains:
- A two patch fix for a regression with block enabled tagging caused
by a commit in the initial pull request. One patch is from Martin
and ensures that SCSI doesn't truncate 64-bit block flags, the
other one is from me and prevents us from double using struct
request queuelist for both completion and busy tags. This caused
anything from a boot crash for some, to crashes under load.
- A blk-mq fix for a potential soft stall when hot unplugging CPUs
with busy IO.
- percpu_counter fix is listed in here, that caused a suspend issue
with virtio-blk due to percpu counters having an inconsistent state
during CPU removal. Andrew sent this in separately a few days ago,
but it's here. JFYI.
- A few fixes for block integrity from Martin.
- A ratelimit fix for loop from Mike Galbraith, to avoid spewing too
much in error cases"
* 'for-linus' of git://git.kernel.dk/linux-block:
block: fix regression with block enabled tagging
scsi: Make sure cmd_flags are 64-bit
block: Ensure we only enable integrity metadata for reads and writes
block: Fix integrity verification
block: Fix for_each_bvec()
drivers/block/loop.c: ratelimit error messages
blk-mq: fix potential stall during CPU unplug with IO pending
percpu_counter: fix bad counter state during suspend
cmd_flags in struct request is now 64 bits wide but the scsi_execute
functions truncated arguments passed to int leading to errors. Make sure
the flags parameters are u64.
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Jens Axboe <axboe@fb.com>
CC: Jan Kara <jack@suse.cz>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
The purpose of this single series of commits from Srivatsa S Bhat (with
a small piece from Gautham R Shenoy) touching multiple subsystems that use
CPU hotplug notifiers is to provide a way to register them that will not
lead to deadlocks with CPU online/offline operations as described in the
changelog of commit 93ae4f978c (CPU hotplug: Provide lockless versions
of callback registration functions).
The first three commits in the series introduce the API and document it
and the rest simply goes through the users of CPU hotplug notifiers and
converts them to using the new method.
/
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Merge tag 'cpu-hotplug-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull CPU hotplug notifiers registration fixes from Rafael Wysocki:
"The purpose of this single series of commits from Srivatsa S Bhat
(with a small piece from Gautham R Shenoy) touching multiple
subsystems that use CPU hotplug notifiers is to provide a way to
register them that will not lead to deadlocks with CPU online/offline
operations as described in the changelog of commit 93ae4f978c ("CPU
hotplug: Provide lockless versions of callback registration
functions").
The first three commits in the series introduce the API and document
it and the rest simply goes through the users of CPU hotplug notifiers
and converts them to using the new method"
* tag 'cpu-hotplug-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (52 commits)
net/iucv/iucv.c: Fix CPU hotplug callback registration
net/core/flow.c: Fix CPU hotplug callback registration
mm, zswap: Fix CPU hotplug callback registration
mm, vmstat: Fix CPU hotplug callback registration
profile: Fix CPU hotplug callback registration
trace, ring-buffer: Fix CPU hotplug callback registration
xen, balloon: Fix CPU hotplug callback registration
hwmon, via-cputemp: Fix CPU hotplug callback registration
hwmon, coretemp: Fix CPU hotplug callback registration
thermal, x86-pkg-temp: Fix CPU hotplug callback registration
octeon, watchdog: Fix CPU hotplug callback registration
oprofile, nmi-timer: Fix CPU hotplug callback registration
intel-idle: Fix CPU hotplug callback registration
clocksource, dummy-timer: Fix CPU hotplug callback registration
drivers/base/topology.c: Fix CPU hotplug callback registration
acpi-cpufreq: Fix CPU hotplug callback registration
zsmalloc: Fix CPU hotplug callback registration
scsi, fcoe: Fix CPU hotplug callback registration
scsi, bnx2fc: Fix CPU hotplug callback registration
scsi, bnx2i: Fix CPU hotplug callback registration
...
In order to support local WRITE_INSERT + READ_STRIP operations for
non PI enabled fabrics, the fabric driver needs to be able signal
what protection offload operations are supported.
This is done at session initialization time so the modes can be
signaled by individual se_wwn + se_portal_group endpoints, as well
as optionally across different transports on the same endpoint.
For iser-target, set TARGET_PROT_ALL if the underlying ib_device
has already signaled PI offload support, and allow this to be
exposed via a new iscsit_transport->iscsit_get_sup_prot_ops()
callback.
For loopback, set TARGET_PROT_ALL to signal SCSI initiator mode
operation.
For all other drivers, set TARGET_PROT_NORMAL to disable fabric
level PI.
Cc: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: Quinn Tran <quinn.tran@qlogic.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Now that TASK_ABORTED status is not generated for all cases by
TMR ABORT_TASK + LUN_RESET, a new TFO->abort_task() caller is
necessary in order to give fabric drivers a chance to unmap
hardware / software resources before the se_cmd descriptor is
released via the normal TFO->release_cmd() codepath.
This patch adds TFO->aborted_task() in core_tmr_abort_task()
in place of the original transport_send_task_abort(), and
also updates all fabric drivers to implement this caller.
The fabric drivers that include changes to perform cleanup
via ->aborted_task() are:
- iscsi-target
- iser-target
- srpt
- tcm_qla2xxx
The fabric drivers that currently set ->aborted_task() to
NOPs are:
- loopback
- tcm_fc
- usb-gadget
- sbp-target
- vhost-scsi
For the latter five, there appears to be no additional cleanup
required before invoking TFO->release_cmd() to release the
se_cmd descriptor.
v2 changes:
- Move ->aborted_task() call into transport_cmd_finish_abort (Alex)
Cc: Alex Leung <amleung21@yahoo.com>
Cc: Mark Rustad <mark.d.rustad@intel.com>
Cc: Roland Dreier <roland@kernel.org>
Cc: Vu Pham <vu@mellanox.com>
Cc: Chris Boot <bootc@bootc.net>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Giridhar Malavali <giridhar.malavali@qlogic.com>
Cc: Saurav Kashyap <saurav.kashyap@qlogic.com>
Cc: Quinn Tran <quinn.tran@qlogic.com>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
- The biggest change is core API extensions and mlx5 low-level driver
support for handling DIF/DIX-style protection information, and the
addition of PI support to the iSER initiator. Target support will be
arriving shortly through the SCSI target tree.
- A nice simplification to the "umem" memory pinning library now that
we have chained sg lists. Kudos to Yishai Hadas for realizing our
code didn't have to be so crazy.
- Another nice simplification to the sg wrappers used by qib, ipath and
ehca to handle their mapping of memory to adapter.
- The usual batch of fixes to bugs found by static checkers etc. from
intrepid people like Dan Carpenter and Yann Droneaud.
- A large batch of cxgb4, ocrdma, qib driver updates.
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Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband
Pull infiniband updates from Roland Dreier:
"Main batch of InfiniBand/RDMA changes for 3.15:
- The biggest change is core API extensions and mlx5 low-level driver
support for handling DIF/DIX-style protection information, and the
addition of PI support to the iSER initiator. Target support will
be arriving shortly through the SCSI target tree.
- A nice simplification to the "umem" memory pinning library now that
we have chained sg lists. Kudos to Yishai Hadas for realizing our
code didn't have to be so crazy.
- Another nice simplification to the sg wrappers used by qib, ipath
and ehca to handle their mapping of memory to adapter.
- The usual batch of fixes to bugs found by static checkers etc.
from intrepid people like Dan Carpenter and Yann Droneaud.
- A large batch of cxgb4, ocrdma, qib driver updates"
* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: (102 commits)
RDMA/ocrdma: Unregister inet notifier when unloading ocrdma
RDMA/ocrdma: Fix warnings about pointer <-> integer casts
RDMA/ocrdma: Code clean-up
RDMA/ocrdma: Display FW version
RDMA/ocrdma: Query controller information
RDMA/ocrdma: Support non-embedded mailbox commands
RDMA/ocrdma: Handle CQ overrun error
RDMA/ocrdma: Display proper value for max_mw
RDMA/ocrdma: Use non-zero tag in SRQ posting
RDMA/ocrdma: Memory leak fix in ocrdma_dereg_mr()
RDMA/ocrdma: Increment abi version count
RDMA/ocrdma: Update version string
be2net: Add abi version between be2net and ocrdma
RDMA/ocrdma: ABI versioning between ocrdma and be2net
RDMA/ocrdma: Allow DPP QP creation
RDMA/ocrdma: Read ASIC_ID register to select asic_gen
RDMA/ocrdma: SQ and RQ doorbell offset clean up
RDMA/ocrdma: EQ full catastrophe avoidance
RDMA/cxgb4: Disable DSGL use by default
RDMA/cxgb4: rx_data() needs to hold the ep mutex
...
Pull x86 old platform removal from Peter Anvin:
"This patchset removes support for several completely obsolete
platforms, where the maintainers either have completely vanished or
acked the removal. For some of them it is questionable if there even
exists functional specimens of the hardware"
Geert Uytterhoeven apparently thought this was a April Fool's pull request ;)
* 'x86-nuke-platforms-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86, platforms: Remove NUMAQ
x86, platforms: Remove SGI Visual Workstation
x86, apic: Remove support for IBM Summit/EXA chipset
x86, apic: Remove support for ia32-based Unisys ES7000
Pull core block layer updates from Jens Axboe:
"This is the pull request for the core block IO bits for the 3.15
kernel. It's a smaller round this time, it contains:
- Various little blk-mq fixes and additions from Christoph and
myself.
- Cleanup of the IPI usage from the block layer, and associated
helper code. From Frederic Weisbecker and Jan Kara.
- Duplicate code cleanup in bio-integrity from Gu Zheng. This will
give you a merge conflict, but that should be easy to resolve.
- blk-mq notify spinlock fix for RT from Mike Galbraith.
- A blktrace partial accounting bug fix from Roman Pen.
- Missing REQ_SYNC detection fix for blk-mq from Shaohua Li"
* 'for-3.15/core' of git://git.kernel.dk/linux-block: (25 commits)
blk-mq: add REQ_SYNC early
rt,blk,mq: Make blk_mq_cpu_notify_lock a raw spinlock
blk-mq: support partial I/O completions
blk-mq: merge blk_mq_insert_request and blk_mq_run_request
blk-mq: remove blk_mq_alloc_rq
blk-mq: don't dump CPU -> hw queue map on driver load
blk-mq: fix wrong usage of hctx->state vs hctx->flags
blk-mq: allow blk_mq_init_commands() to return failure
block: remove old blk_iopoll_enabled variable
blktrace: fix accounting of partially completed requests
smp: Rename __smp_call_function_single() to smp_call_function_single_async()
smp: Remove wait argument from __smp_call_function_single()
watchdog: Simplify a little the IPI call
smp: Move __smp_call_function_single() below its safe version
smp: Consolidate the various smp_call_function_single() declensions
smp: Teach __smp_call_function_single() to check for offline cpus
smp: Remove unused list_head from csd
smp: Iterate functions through llist_for_each_entry_safe()
block: Stop abusing rq->csd.list in blk-softirq
block: Remove useless IPI struct initialization
...
This patch consists of the usual driver updates (megaraid_sas, scsi_debug,
qla2xxx, qla4xxx, lpfc, bnx2fc, be2iscsi, hpsa, ipr) plus an assortment of
minor fixes and the first precursors of SCSI-MQ (the code path
simplifications) and the bug fix for the USB oops on remove (which involves an
infrastructure change, so is sent via the main tree with a delayed backport
after a cycle in which it is shown to introduce no new bugs).
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull first round of SCSI updates from James Bottomley:
"This patch consists of the usual driver updates (megaraid_sas,
scsi_debug, qla2xxx, qla4xxx, lpfc, bnx2fc, be2iscsi, hpsa, ipr) plus
an assortment of minor fixes and the first precursors of SCSI-MQ (the
code path simplifications) and the bug fix for the USB oops on remove
(which involves an infrastructure change, so is sent via the main tree
with a delayed backport after a cycle in which it is shown to
introduce no new bugs)"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (196 commits)
[SCSI] sd: Quiesce mode sense error messages
[SCSI] add support for per-host cmd pools
[SCSI] simplify command allocation and freeing a bit
[SCSI] megaraid: simplify internal command handling
[SCSI] ses: Use vpd information from scsi_device
[SCSI] Add EVPD page 0x83 and 0x80 to sysfs
[SCSI] Return VPD page length in scsi_vpd_inquiry()
[SCSI] scsi_sysfs: Implement 'is_visible' callback
[SCSI] hpsa: update driver version to 3.4.4-1
[SCSI] hpsa: fix bad endif placement in RAID 5 mapper code
[SCSI] qla2xxx: Fix build errors related to invalid print fields on some architectures.
[SCSI] bfa: Replace large udelay() with mdelay()
[SCSI] vmw_pvscsi: Some improvements in pvscsi driver.
[SCSI] vmw_pvscsi: Add support for I/O requests coalescing.
[SCSI] vmw_pvscsi: Fix pvscsi_abort() function.
[SCSI] remove deprecated IRQF_DISABLED from SCSI
[SCSI] bfa: Updating Maintainers email ids
[SCSI] ipr: Add new CCIN definition for Grand Canyon support
[SCSI] ipr: Format HCAM overlay ID 0x21
[SCSI] ipr: Use pci_enable_msi_range() and pci_enable_msix_range()
...
Here's the big driver core / sysfs update for 3.15-rc1.
Lots of kernfs updates to make it useful for other subsystems, and a few
other tiny driver core patches.
All have been in linux-next for a while.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'driver-core-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core and sysfs updates from Greg KH:
"Here's the big driver core / sysfs update for 3.15-rc1.
Lots of kernfs updates to make it useful for other subsystems, and a
few other tiny driver core patches.
All have been in linux-next for a while"
* tag 'driver-core-3.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (42 commits)
Revert "sysfs, driver-core: remove unused {sysfs|device}_schedule_callback_owner()"
kernfs: cache atomic_write_len in kernfs_open_file
numa: fix NULL pointer access and memory leak in unregister_one_node()
Revert "driver core: synchronize device shutdown"
kernfs: fix off by one error.
kernfs: remove duplicate dir.c at the top dir
x86: align x86 arch with generic CPU modalias handling
cpu: add generic support for CPU feature based module autoloading
sysfs: create bin_attributes under the requested group
driver core: unexport static function create_syslog_header
firmware: use power efficient workqueue for unloading and aborting fw load
firmware: give a protection when map page failed
firmware: google memconsole driver fixes
firmware: fix google/gsmi duplicate efivars_sysfs_init()
drivers/base: delete non-required instances of include <linux/init.h>
kernfs: fix kernfs_node_from_dentry()
ACPI / platform: drop redundant ACPI_HANDLE check
kernfs: fix hash calculation in kernfs_rename_ns()
kernfs: add CONFIG_KERNFS
sysfs, kobject: add sysfs wrapper for kernfs_enable_ns()
...
Pull libata updates from Tejun Heo:
"A lot of activities on libata side this time.
- A lot of changes around ahci. Various embedded platforms are
implementing ahci controllers. Some were built atop ahci_platform,
others were doing their own things. Hans made some structural
changes to libahci and librarized ahci_platform so that ahci
platform drivers can share more common code. A couple platform
drivers are added on top of that and several are added to replace
older drivers which were doing their own things (older ones are
scheduled to be removed).
- Dan finishes the patchset to make libata PM operations
asynchronous. Combined with one patch being routed through scsi,
this should speed resume measurably.
- Various fixes and cleanups from Bartlomiej and others"
* 'for-3.15' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (61 commits)
ata: fix Marvell SATA driver dependencies
ata: fix ARASAN CompactFlash PATA driver dependencies
ata: remove superfluous casts
ata: sata_highbank: remove superfluous cast
ata: fix Calxeda Highbank SATA driver dependencies
ata: fix R-Car SATA driver dependencies
ARM: davinci: da850: update SATA AHCI support
ata: add new-style AHCI platform driver for DaVinci DA850 AHCI controller
ata: move library code from ahci_platform.c to libahci_platform.c
ata: ahci_platform: fix ahci_platform_data->suspend method handling
libata: remove unused ata_sas_port_async_resume() stub
libata.h: add stub for ata_sas_port_resume
libata: async resume
libata, libsas: kill pm_result and related cleanup
ata: Fix compiler warning with APM X-Gene host controller driver
arm64: Add APM X-Gene SoC AHCI SATA host controller DTS entries
ata: Add APM X-Gene SoC AHCI SATA host controller driver
Documentation: Add documentation for the APM X-Gene SoC SATA host controller DTS binding
arm64: Add APM X-Gene SoC 15Gbps Multi-purpose PHY DTS entries
ata: ahci_sunxi: fix code formatting
...
Messages about discovered disk properties are only printed once unless
they are found to have changed. Errors encountered during mode sense,
however, are printed every time we revalidate.
Quiesce mode sense errors so they are only printed during the first
scan.
[jejb: checkpatch fixes]
Bugzilla: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=733565
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This allows drivers to specify the size of their per-command private
data in the host template and then get extra memory allocated for
each command instead of needing another allocation in ->queuecommand.
With the current SCSI code that already does multiple allocations for
each command this probably doesn't make a big performance impact, but
it allows to clean up the drivers, and prepare them for using the
blk-mq infrastructure where the common allocation will make a difference.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Just have one level of alloc/free functions that take a host instead
of two levels for the allocation and different calling conventions
for the free.
[fengguang.wu@intel.com: docbook problems spotted, now fixed]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
We don't use the passed in scsi command for anything, so just add a adapter-
wide internal status to go along with the internal scb that is used unter
int_mtx to pass back the return value and get rid of all the complexities
and abuse of the scsi_cmnd structure.
This gets rid of the only user of scsi_allocate_command/scsi_free_command,
which can now be removed.
[jejb: checkpatch fixes]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The scsi_device now has VPD page83 information attached, so
there is no need to query it again.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
EVPD page 0x83 is used to uniquely identify the device.
So instead of having each and every program issue a separate
SG_IO call to retrieve this information it does make far more
sense to display it in sysfs.
Some older devices (most notably tapes) will only report reliable
information in page 0x80 (Unit Serial Number). So export this
in the sysfs attribute 'vpd_pg80'.
[jejb: checkpatch fix]
[hare: attach after transport configure]
[fengguang.wu@intel.com: spotted problems with the original now fixed]
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
We should be returning the number of bytes of the
requested VPD page in scsi_vpd_inquiry.
This makes it easier for the caller to verify the
required space.
[jejb: fix up mm warning spotted by Sergey]
Tested-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Pull networking fixes from David Miller:
1) OpenVswitch's lookup_datapath() returns error pointers, so don't
check against NULL. From Jiri Pirko.
2) pfkey_compile_policy() code path tries to do a GFP_KERNEL allocation
under RCU locks, fix by using GFP_ATOMIC when necessary. From
Nikolay Aleksandrov.
3) phy_suspend() indirectly passes uninitialized data into the ethtool
get wake-on-land implementations. Fix from Sebastian Hesselbarth.
4) CPSW driver unregisters CPTS twice, fix from Benedikt Spranger.
5) If SKB allocation of reply packet fails, vxlan's arp_reduce() defers
a NULL pointer. Fix from David Stevens.
6) IPV6 neigh handling in vxlan doesn't validate the destination
address properly, and it builds a packet with the src and dst
reversed. Fix also from David Stevens.
7) Fix spinlock recursion during subscription failures in TIPC stack,
from Erik Hugne.
8) Revert buggy conversion of davinci_emac to devm_request_irq, from
Chrstian Riesch.
9) Wrong flags passed into forwarding database netlink notifications,
from Nicolas Dichtel.
10) The netpoll neighbour soliciation handler checks wrong ethertype,
needs to be ETH_P_IPV6 rather than ETH_P_ARP. Fix from Li RongQing.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (34 commits)
tipc: fix spinlock recursion bug for failed subscriptions
vxlan: fix nonfunctional neigh_reduce()
net: davinci_emac: Fix rollback of emac_dev_open()
net: davinci_emac: Replace devm_request_irq with request_irq
netpoll: fix the skb check in pkt_is_ns
net: micrel : ks8851-ml: add vdd-supply support
ip6mr: fix mfc notification flags
ipmr: fix mfc notification flags
rtnetlink: fix fdb notification flags
tcp: syncookies: do not use getnstimeofday()
netlink: fix setsockopt in mmap examples in documentation
openvswitch: Correctly report flow used times for first 5 minutes after boot.
via-rhine: Disable device in error path
ATHEROS-ATL1E: Convert iounmap to pci_iounmap
vxlan: fix potential NULL dereference in arp_reduce()
cnic: Update version to 2.5.20 and copyright year.
cnic,bnx2i,bnx2fc: Fix inconsistent use of page size
cnic: Use proper ulp_ops for per device operations.
net: cdc_ncm: fix control message ordering
ipv6: ip6_append_data_mtu do not handle the mtu of the second fragment properly
...
This patch fixes the following two kernel-doc warnings:
Warning(drivers/scsi/scsi_transport_srp.c:819): No description found for parameter 'rport'
Warning(include/scsi/scsi_transport_srp.h:75): Excess struct/union/enum/typedef member 'deleted' description in 'srp_rport'
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reported-by: Masanari Iida <standby24x7@gmail.com>
Acked-by: Sebastian Riemer <sebastian.riemer@profitbricks.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Subsystems that want to register CPU hotplug callbacks, as well as perform
initialization for the CPUs that are already online, often do it as shown
below:
get_online_cpus();
for_each_online_cpu(cpu)
init_cpu(cpu);
register_cpu_notifier(&foobar_cpu_notifier);
put_online_cpus();
This is wrong, since it is prone to ABBA deadlocks involving the
cpu_add_remove_lock and the cpu_hotplug.lock (when running concurrently
with CPU hotplug operations).
Instead, the correct and race-free way of performing the callback
registration is:
cpu_notifier_register_begin();
for_each_online_cpu(cpu)
init_cpu(cpu);
/* Note the use of the double underscored version of the API */
__register_cpu_notifier(&foobar_cpu_notifier);
cpu_notifier_register_done();
Fix the fcoe code in scsi by using this latter form of callback registration.
Cc: Robert Love <robert.w.love@intel.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Subsystems that want to register CPU hotplug callbacks, as well as perform
initialization for the CPUs that are already online, often do it as shown
below:
get_online_cpus();
for_each_online_cpu(cpu)
init_cpu(cpu);
register_cpu_notifier(&foobar_cpu_notifier);
put_online_cpus();
This is wrong, since it is prone to ABBA deadlocks involving the
cpu_add_remove_lock and the cpu_hotplug.lock (when running concurrently
with CPU hotplug operations).
Instead, the correct and race-free way of performing the callback
registration is:
cpu_notifier_register_begin();
for_each_online_cpu(cpu)
init_cpu(cpu);
/* Note the use of the double underscored version of the API */
__register_cpu_notifier(&foobar_cpu_notifier);
cpu_notifier_register_done();
Fix the bnx2fc code in scsi by using this latter form of callback
registration.
Cc: Eddie Wai <eddie.wai@broadcom.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Subsystems that want to register CPU hotplug callbacks, as well as perform
initialization for the CPUs that are already online, often do it as shown
below:
get_online_cpus();
for_each_online_cpu(cpu)
init_cpu(cpu);
register_cpu_notifier(&foobar_cpu_notifier);
put_online_cpus();
This is wrong, since it is prone to ABBA deadlocks involving the
cpu_add_remove_lock and the cpu_hotplug.lock (when running concurrently
with CPU hotplug operations).
Instead, the correct and race-free way of performing the callback
registration is:
cpu_notifier_register_begin();
for_each_online_cpu(cpu)
init_cpu(cpu);
/* Note the use of the double underscored version of the API */
__register_cpu_notifier(&foobar_cpu_notifier);
cpu_notifier_register_done();
Fix the bnx2i code in scsi by using this latter form of callback registration.
Cc: Eddie Wai <eddie.wai@broadcom.com>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Srivatsa S. Bhat <srivatsa.bhat@linux.vnet.ibm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Instead of modifying attributes after the device has been created
we should be using the 'is_visible' callback to avoid races.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
It caused the i/o request to always be counted as ineligible for
the accelerated i/o path on 32 bit systems and negatively affected
performance.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Fixes some build warnings such as:
drivers/scsi/qla2xxx/qla_attr.c:162:6: warning: format '%lx' expects argument of
type 'long unsigned int', but argument 6 has type 'size_t'"
and
drivers/scsi/qla2xxx/qla_init.c:5198:7: warning: format '%lx' expects argument
of type 'long unsigned int', but argument 5 has type 'uint32_t' [-Wformat]
Signed-off-by: Chad Dupuis <chad.dupuis@qlogic.com>
Signed-off-by: Saurav Kashyap <saurav.kashyap@qlogic.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
udelay() does not work on some architectures for values above
2000, in particular on ARM:
ERROR: "__bad_udelay" [drivers/scsi/bfa/bfa.ko] undefined!
Reported-by: Vagrant Cascadian <vagrant@debian.org>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This change is about the following:
(1) If the number of targets is 16+ then default ring_pages to 32.
(2) Change default queue depth (per device) to 254.
(3) Implement change_queue_depth function so that queue_depth per device can
be changed at run time. Honors the request only if coming from sysfs.
(4) Clean up the info returned by modinfo.
Signed-off-by: Arvind Kumar <arvindkumar@vmware.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This change allows pvscsi driver to coalesce I/O requests
before issuing them. The number of I/O's coalesced can be
dynamically configured based on the workload.
Signed-off-by: Rishi Mehta <rmehta@vmware.com>
Signed-off-by: Arvind Kumar <arvindkumar@vmware.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This change ensures that pvscsi_abort() function returns SUCCESS
only when the command in question was actually completed, otherwise
returns FAILURE. The code before change, was causing a bug where
driver tries to complete a command to the mid-layer while the mid-layer
has already requested the driver to abort that command, in response
to which the driver has responded with SUCCESS causing mid-layer
to free the command struct.
Signed-off-by: Arvind Kumar <arvindkumar@vmware.com>
Tested-by: Ewan Milne <emilne@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
It's a NOOP since 2.6.35 and it will be removed one day.
[jejb: remove from missed arm scsi drivers]
Signed-off-by: Michael Opdenacker <michael.opdenacker@free-electrons.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Add the appropriate definition and table entry for new hardware support.
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
As result deprecation of MSI-X/MSI enablement functions
pci_enable_msix() and pci_enable_msi_block() all drivers
using these two interfaces need to be updated to use the
new pci_enable_msi_range() and pci_enable_msix_range()
interfaces.
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
There is no need to call pci_disable_msi() or pci_disable_msix()
in case the call to pci_enable_msi() or pci_enable_msix() failed.
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
If, when the ipr driver loads, the adapter is in an EEH error state,
it will currently oops and not be able to recover, as it attempts
to access memory that has not yet been allocated. We've seen this
occur in some kexec scenarios. The following patch fixes the oops
and also allows the driver to recover from these probe time EEH errors.
[jejb: checkpatch fix]
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Add the appropriate definition and table entry for new hardware support.
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This patch removes extended delay bit on GSCSI reads/writes ops, the
performance will be significanly better.
Signed-off-by: Wen Xiong <wenxiong@linux.vnet.ibm.com>
Acked-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This adds a module parameter to enable clustering.
Without enabling clustering support, the transfer length for read and
write scsi commands is limited upto 8MB when page size is 4KB and
sg_tablesize is 2048 (= SCSI_MAX_SG_CHAIN_SEGMENTS). I would like to
test commands with more than that transfer length.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This change ensures that concurrent device access including ramdisk
storage, protection info, and provisioning map by read, write, and
unmap commands are protected with atomic_rw spinlock.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Currently, clustering support for scsi_debug is disabled. This is
because there are for_each_sg() loops which assume that each sg list
element is consisted with a single page. But enabling clustering
support, each sg list element for scsi commands can be consisted with
multiple pages.
This replaces these for_each_sg() loops with sg mapping iterator which
is capable of handling each sg list element is consisted with multiple
pages.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
When resp_xdwriteread() can't allocate temporary buffer, it returns -1.
But the return value is used as scsi status code and -1 is not
interpreted as correct code.
target_core_mod has similar xdwriteread emulation code. So this mimics
what target_core_mod does for xdwriteread when running out of memory.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
It is unnecessary to increase dif_errors in dif_verify(), because the
caller will increment it when dif_verify() detects failure.
This bug was introduced by commit beb40ea42b ("[SCSI] scsi_debug:
reduce duplication between prot_verify_read and prot_verify_write")
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
As pseudo_primary is only used in scsi_debug.c, it should be static.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Reviewed-by: Douglas Gilbert <dgilbert@interlog.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Reading partially unwritten sectors generates a false positive logical
block reference tag check failure when DIF is enabled.
This bug is caused by missing ei_lba increment in loop of dif_verify()
when unwritten sector is skipped.
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Douglas Gilbert <dgilbert@interlog.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Tejun says:
"At least for libata, worrying about suspend/resume failures don't make
whole lot of sense. If suspend failed, just proceed with suspend. If
the device can't be woken up afterwards, that's that. There isn't
anything we could have done differently anyway. The same for resume, if
spinup fails, the device is dud and the following commands will invoke
EH actions and will eventually fail. Again, there really isn't any
*choice* to make. Just making sure the errors are handled gracefully
(ie. don't crash) and the following commands are handled correctly
should be enough."
The only libata user that actually cares about the result from a suspend
operation is libsas. However, it only cares about whether queuing a new
operation collides with an in-flight one. All libsas does with the
error is retry, but we can just let libata wait for the previous
operation before continuing.
Other cleanups include:
1/ Unifying all ata port pm operations on an ata_port_pm_ prefix
2/ Marking all ata port pm helper routines as returning void, only
ata_port_pm_ entry points need to fake a 0 return value.
3/ Killing ata_port_{suspend|resume}_common() in favor of calling
ata_port_request_pm() directly
4/ Killing the wrappers that just do a to_ata_port() conversion
5/ Clearly marking the entry points that do async operations with an
_async suffix.
Reference: http://marc.info/?l=linux-scsi&m=138995409532286&w=2
Cc: Phillip Susi <psusi@ubuntu.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Todd Brandt <todd.e.brandt@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
The bnx2/bnx2x rings are made up of linked pages. However there is an
upper limit on the page size as some the page size settings are 16-bit
in the hardware/firmware interface. In the current code, some parts
use BNX2_PAGE_SIZE which has a 16K upper limit and some parts use
PAGE_SIZE. On archs with >= 64K PAGE_SIZE, it generates some compile
warnings. Define a new CNIC_PAGE_SZIE which has an upper limit of
16K and use it consistently in all relevant parts.
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: Eddie Wai <eddie.wai@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
iSCSI needs to be at least aware that a task involves protection
information. In case it does, after the transaction completed libiscsi
will ask the transport to check the protection status of the
transaction.
Unlike transport errors, DIF errors should not prevent successful
completion of the transaction from the transport point of view, but
should be escelated to scsi mid-layer when constructing the scsi
result and sense data.
check_protection routine will return the ascq corresponding to the DIF
error that occured (or 0 if no error happened).
return ascq:
- 0x1: GUARD_CHECK_FAILED
- 0x2: APPTAG_CHECK_FAILED
- 0x3: REFTAG_CHECK_FAILED
Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Alex Tabachnik <alext@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This is a set of six fixes. Two are instant crash/null deref types (storvsc
and isci). The two qla2xxx are initialisation problems that cause MSI-X
failures and card misdetection, the isci erroneous macro is actually illegal C
that's causing a miscompile with certain gcc versions and the be2iscsi bad if
expression is a static checker fix.
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of six fixes. Two are instant crash/null deref types
(storvsc and isci). The two qla2xxx are initialisation problems that
cause MSI-X failures and card misdetection, the isci erroneous macro
is actually illegal C that's causing a miscompile with certain gcc
versions and the be2iscsi bad if expression is a static checker fix"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
[SCSI] storvsc: NULL pointer dereference fix
[SCSI] qla2xxx: Poll during initialization for ISP25xx and ISP83xx
[SCSI] isci: correct erroneous for_each_isci_host macro
[SCSI] isci: fix reset timeout handling
[SCSI] be2iscsi: fix bad if expression
[SCSI] qla2xxx: Fix multiqueue MSI-X registration.
Avoid a spurious device get/put pair by cleaning up scsi_requeue_command
and folding scsi_unprep_request into it.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Eliminate a get_device() / put_device() pair from scsi_next_command().
Both are atomic operations hence removing these slightly improves
performance.
[hch: slight changes due to different context]
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
SCSI devices may only be removed by calling scsi_remove_device().
That function must invoke blk_cleanup_queue() before the final put
of sdev->sdev_gendev. Since blk_cleanup_queue() waits for the
block queue to drain and then tears it down, scsi_request_fn cannot
be active anymore after blk_cleanup_queue() has returned and hence
the get_device()/put_device() pair in scsi_request_fn is unnecessary.
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Many callers won't need this and we can optimize them away. In addition
the handling in the __-prefixed variants was inconsistant to start with.
Based on an earlier patch from Bart Van Assche.
[jejb: fix kerneldoc probelm picked up by Fengguang Wu]
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
If we don't have starved devices we don't need to take the host lock
to iterate over them. Also split the function up to be more clear.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Avoid hitting the host-wide free_list lock unless we need to put a command
back onto the freelist.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Structure was already memset to zero at the top
of hpsa_scsi_ioaccel2_queue_command
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This allows exposing physical disks behind Smart
Array controllers to the OS (if the controller
has the right firmware and is in "hba" mode)
Signed-off-by: Joe Handzik <joseph.t.handzik@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
rc is set in the loop, and it isn't set back to zero anywhere
this patch fixes it
Signed-off-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Do not expose drives that are undergoing a format immediately
to the OS, instead wait until they are ready before bringing
them online. This is so that logical drives created with
"rapid parity initialization" do not get immediately kicked
off the system for being unresponsive.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Evidently some wacky USB-ATA bridges don't recognize the SYNCHRONIZE
CACHE command, as shown in this email thread:
http://marc.info/?t=138978356200002&r=1&w=2
The fact that we can't tell them to drain their caches shouldn't
prevent the system from going into suspend. Therefore sd_sync_cache()
shouldn't return an error if the device replies with an Invalid
Command ASC.
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-by: Sven Neumann <s.neumann@raumfeld.com>
Tested-by: Daniel Mack <zonque@gmail.com>
CC: <stable@vger.kernel.org>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
If a phy device is removed, the device can get error of I/O and HBA maybe
receieve IO_OPEN_CNX_ERROR_IT_NEXUS_LOSS of event which causes pm8001_work_fn
to reset the phy device but in pm8001_task_exec we don't assign a value for
the device field of the ccb and in other case a ccb used have device field
set, when ccb is freed the field device of the ccb don't be set NULL.So there
is possibility of getting another device reset in function mpi_ssp_completion.
Signed-off-by: zhuxh <zxh3737@163.com>
Acked-by: Lindar Liu <lindar_liu@usish.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
In function pm8001_dev_gone_notify we consume a tag from bitmap resource and
later don't free that tag resource, so the tag resource will never be
freed. In the function we don't need to use any tag to issue command for
unregistering the device .
Signed-off-by: XinHong Zhu <zxh3737@163.com>
Acked-by: Lindar Liu <lindar_liu@usish.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The following patch for megaraid_sas updates the driver version to
v06.803.01.00-rc1, and updates Documentation/scsi/ChangeLog.megaraid_sas.
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The following patch for megaraid_sas adds Dell PowerEdge VRTS SR-IOV VF
support (Device ID 0x002f).
This patch has some > 80 column lines that need to be left in place
for code readability purposes.
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The following patch for megaraid_sas will return leaked MPT frames from any
polled DCMD's that timeout to the MPT frame pool.
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The following patch for megaraid_sas fixes the megasas_ioc_init_fusion
function to use a local stack variable for the IOCinit frame physical address
instead of clobbering the first request descriptor.
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The following patch for megaraid_sas loads the correct raid context timeout
value for multpathing and clustering.
Signed-off-by: Adam Radford <aradford@gmail.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Host lock is added back around queuecommand. Host lock removal can create race
conditon between ISR path(when RAID map update interrupt is raised) and IO
build path of driver, since IO build path is making use of RAID map, and in
case of RAID map update interrupt, old RAID map copy is memset to zero, which
some IOs may be referencing in build IO path. Changes done for performance
boost- 1) Added code to set SMP IRQ affinity per CPU. 2) Pass MSI-x index,
while issuing sysPD IO.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
If consistent DMA mask is set to 64 bit, fall back to 32bit DMA mask and 32bit consistent DMA mask.
64bit consistent DMA mask may be set on some 64bit DMA slot, which causes DMA offset "10000000000000" and
MFI_INIT and IOCTL frames will have high memory addresses, leads to firmware FAULT.
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Don't wait forever for firmware response for internal DCMDs sent from driver
firmware. Such DCMDs will be posted to firmware with timeout. Timeout is also
introduced for DCMD sent to abort the commands. DCMD sent via IOCTL path will
still be always blocking to keep the IOCTL design intact.
Signed-off-by: Sumit Saxena <sumit.saxena@lsi.com>
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The original code always set the upper 32 bits to zero because it was
doing a shift of the wrong variable.
Fixes: 1a4f550a09 ('[SCSI] arcmsr: 1.20.00.15: add SATA RAID plus other fixes')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Currently, scsi error handling in scsi_io_completion() tries to
unconditionally requeue scsi command when device keeps some error state.
For example, UNIT_ATTENTION causes infinite retry with
action == ACTION_RETRY.
This is because retryable errors are thought to be temporary and the scsi
device will soon recover from those errors. Normally, such retry policy is
appropriate because the device will soon recover from temporary error state.
But there is no guarantee that device is able to recover from error state
immediately. Some hardware error can prevent device from recovering.
This patch adds timeout in scsi_io_completion() to avoid infinite command
retry in scsi_io_completion(). Once scsi command retry time is longer than
this timeout, the command is treated as failure.
Signed-off-by: Eiichi Tsukata <eiichi.tsukata.xh@hitachi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Check that the session is setup before accessing its
connection. This fixes a oops where userspace tries
to get the ip address before the session is bound to
a host.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Load and unload iscsi_ibft module will cause kernel memory leak, fix it
in scsi/iscsi_boot_sysfs.c iscsi_boot_destroy_kset().
Signed-off-by: Ethan Zhao <ethan.kernel@gmail.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
iscsi_queuecommand will only take in commands that can fit in the
current window. So, if a command is on the cmdqueue then it can
fit in the current window. If a command is on the mgmtqueue, then
we are setting the immediate bit so they will also fit in the
window. As a result, we never need to to do a iscsi_conn_queue_work
when the maxCmdSn is increased.
What should happen is that a command will complete the window will
be increased, then the scsi layer will send us more commands by
running the scsi_device queues.
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Replace the session lock with two locks, a forward lock and
a backwards lock named frwd_lock and back_lock respectively.
The forward lock protects resources that change while sending a
request to the target, such as cmdsn, queued_cmdsn, and allocating
task from the commands' pool with kfifo_out.
The backward lock protects resources that change while processing
a response or in error path, such as cmdsn_exp, cmdsn_max, and
returning tasks to the commands' pool with kfifo_in.
Under a steady state fast-path situation, that is when one
or more processes/threads submit IO to an iscsi device and
a single kernel upcall (e.g softirq) is dealing with processing
of responses without errors, this patch eliminates the contention
between the queuecommand()/request response/scsi_done() flows
associated with iscsi sessions.
Between the forward and the backward locks exists a strict locking
hierarchy. The mutual exclusion zone protected by the forward lock can
enclose the mutual exclusion zone protected by the backward lock but not
vice versa.
For example, in iscsi_conn_teardown or in iscsi_xmit_data when there is
a failure and __iscsi_put_task is called, the backward lock is taken while
the forward lock is still taken. On the other hand, if in the RX path a nop
is to be sent, for example in iscsi_handle_reject or __iscsi_complete_pdu
than the forward lock is released and the backward lock is taken for the
duration of iscsi_send_nopout, later the backward lock is released and the
forward lock is retaken.
libiscsi_tcp uses two kernel fifos the r2t pool and the r2t queue.
The insertion and deletion from these queues didn't corespond to the
assumption taken by the new forward/backwards session locking paradigm.
That is, in iscsi_tcp_clenup_task which belongs to the RX (backwards)
path, r2t is taken out from r2t queue and inserted to the r2t pool.
In iscsi_tcp_get_curr_r2t which belong to the TX (forward) path, r2t
is also inserted to the r2t pool and another r2t is pulled from r2t
queue.
Only in iscsi_tcp_r2t_rsp which is called in the RX path but can requeue
to the TX path, r2t is taken from the r2t pool and inserted to the r2t
queue.
In order to cope with this situation, two spin locks were added,
pool2queue and queue2pool. The former protects extracting from the
r2t pool and inserting to the r2t queue, and the later protects the
extracing from the r2t queue and inserting to the r2t pool.
Signed-off-by: Shlomo Pongratz <shlomop@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
[minor fix up to apply cleanly and compile fix]
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Restructure the iscsi_tcp_r2t_rsp routine in order to avoid allocating
r2t from r2tpool.queue and returning it back in case the parameters
rhdr->data_length and or rhdr->data_offset prohibit the requing.
Since the values of these parameters are known prior to the allocation,
we can pre-check and thus avoid futile allocations.
[jejb: checkpatch fixes]
Signed-off-by: Shlomo Pongratz <shlomop@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Fixed calculates wrong tuple values on T5 adapter: switch to use the exported
API cxgb4_select_ntuple() from cxgb4 base driver.
Signed-off-by: Karen Xie <kxie@chelsio.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
When megasas_get_pd_list() fails we cannot detect any drives,
so we should be checking the return value accordingly.
[jejb: checkpatch fix]
Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
When no HBA is found we should be returning '-ENXIO' to be consistent
with the other return values.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The pointer to the queue info structure is potentially
a 64-bit value, so we should be using the correct macros
to set the values in the init frame.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The version of isci driver has not been updated for 2 years.
It was 83 isci commits ago. Suspend/resume support has been implemented
and many bugs have been fixed since 1.1. Now update the version to 1.2.
Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Maciej Patelczyk <maciej.patelczyk@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
For various error conditions the bfa driver just returns
'DID_ERROR', which carries no information at all about the
actual source of error.
This patch updates the error handling to return a correct
error code, depending on the type of error occurred.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Acked-by: Vijaya Mohan Guvva <vmohan@brocade.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Removing unused code as FW does not need any value in mbox-5.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Issue:
While unloading driver MBOX 0x31 fail as DDB logout (MBOX 0x56)
operation is not completed.
Fix:
Wait for DDB Logout completion before MBOX 0x31
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Issue:
Driver holds rom-lock for too long during reset recovery.
During adapter reset testing, it was found that the driver
holds the rom-lock for too long, because of which other
drivers fail to acquire the rom-lock, leading to reset
failures.
The primary cause is, in the bootstrap code, while
holding the rom-lock, the driver checks if the peg is
halted, causing a 2 second contention.
Fix:
When a reset recovery starts, the driver deduces the cause, and
sets appropriate flags in watchdog & recover_adapter routines.
This flag should be used to determine if bootstrap is invoked
from probe or reset context, reducing the rom-lock footprint of
the drivers.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Issue:
minidump data collection fails as driver reports data mismatch
Fix:
When the driver encounters a new entry type that it cannot process,
it should just skip the entry and adjust the total buffer size by
subtracting the skipped bytes from it. This is to ensure that there
is no data mismatch because of the new entries.
Signed-off-by: Tej Parkash <tej.parkash@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Issue:
Pending IO wait does not complete after triggering Graceful reset,
causing ack timeout and call traces.
Fix:
1. Reducing the IO command wait timeout before triggering reset,
as logically also timeout should be less than reset timeout (10sec).
2. Moving the abort IO after chip reset, because only after
chip reset, driver owns the IO otherwise it is with firmware and can
still revert back with response.
Signed-off-by: Tej Parkash <tej.parkash@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Issue:
While booting with kdump kernel, driver receive IOCB interrupts
for which it is not ready which results in processing them
before init_firmware during driver probe
Fix:
Two steps solution
1. Make driver ready to process the interrupt before interupts
handlers is registered.
2. Stop driver processing iocb interrupts if not generated as per
firmware protocol i.e R2H bit set
Signed-off-by: Tej Parkash <tej.parkash@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Issue:
Mailbox command 0x102 (IDC Time Extend) failure seen while applying
changes to iface using iscsiadm
Fix:
Added fix to extend IDC timeout only for ISP84xx when IDC ACK
needs to be posted and disable ACB mailbox command completion
is in intermediate state.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Issue:
qla4xxx Unable to clear DDB indices when logout fails due to
failure of connection close mbox command.
Root cause:
If login to session fail, iscsiadm make call to destroy_session.
qla4xxx driver does not free ddb index map before free_ddb()
Fix:
Clear DDB Index map before free_ddb in "destroy_session"
in case of connection close mailbox command failure with 4005h.
Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
If waiting for signals was interrupted then the device was put to
FAILED state. Use msleep instead of msleep_interruptible to handle
this correctly.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Removed AF_83XX_NO_FWDUMP flag and directly checking IDC_CTRL bit1
while taking minidump, to check for graceful reset.
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Issue:
For ISP8xxx, adapter initialization is not retried if
qla4xxx_initialize_adapter fails.
Fix:
If qla4xxx_initialize_adapter fails, first check if failure is due to IRQs not
attached in order to skip retrial, then free the IRQs and then retry
initializing the adapter.
Signed-off-by: Nilesh Javali <nilesh.javali@qlogic.com>
Signed-off-by: Vikas Chaudhary <vikas.chaudhary@qlogic.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Setting DMA bit mask 64 and roll back to 32 if not supported.
Signed-off-by: Minh Tran <minhduc.tran@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
scsi_cmnd n io_task was not NULL when
- Link goes down while IO was happening and session is closed.
- Task for which TMF was sent.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
In iSCSI Boot scenario, when machine is reboot/shutdown phase
the active sessions are not closed. Driver queue cleanup is
done as part of unload and device is disabled.
Sessions are still active, iSCSI commands are issued from
session which comes to driver, as driver cleanup and device
disabled there is kernel stack dump with errors.
Fix is invoking iscsi_session_failure with ISCSI_ERR_INVALID_HOST
on all the active sessions when shutdown routine is called.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The doorbel format has been updated to support additonal functionalities
of SKH-R adapter. These changes are made such that older FW also works fine.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
The 100Mbps port speed macro used was not proper.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
When an MBX command timeout happens,the resources associated with
the MBX command were freed. If FW were to give the response to
host after the timeout value set by driver then driver crashes as the MBX Cmd
resources were already freed.
This patch fixes this issue by maintaing a state flag for each of
the MBX command posted/timedout/completed.
Signed-off-by: John Soni Jose <sony.john-n@emulex.com>
Signed-off-by: Jayamohan Kallickal <jayamohan.kallickal@emulex.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
On encountering unexpected error conditions from driver initiated
commands, print something useful like CDB and sense data rather than
something useless like the kernel virtual address of the command buffer.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Do no rescan on every events -- way too many rescans are
triggered if we don't filter the events. Limit rescans
to be triggered by the following set of events:
* controller state change
* enclosure hot plug
* physical drive state change
* logical drive state change
* redundant controller state change
* accelerated io enabled/disabled
* accelerated io configuration change
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Don't wait for *all* commands to complete, only for accelerated mode
commands.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Add controller-based data-at-rest encryption compatibility
to ioaccel2 path (HP SSD Smart Path).
Encryption feature requires driver to supply additional fields
for encryption enable, tweak index, and data encryption key index
in the ioaccel2 request structure.
Encryption enable flag and data encryption key index come from
raid_map data structure from raid offload command.
During ioaccel2 submission, check device structure's raid map to see if
encryption is enabled for the device. If so, call new function below.
Add function set_encrypt_ioaccel2 to set encryption flag, data encryption key
index, and calculate tweak value from request's logical block address.
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Change the handling of HP SSD Smart Path errors with status:
0x02 CHECK CONDITION
0x08 BUSY
0x18 RESERVATION CONFLICT
0x40 TASK ABORTED
So that they get retried on the RAID Path.
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Code was confused and assumed that page zero was not
VPD page and all non-zero pages were VPD pages.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Allow driver to schedule a rescan whenever a request fails on the ioaccel2 path.
This eliminates the possibility of driver getting stuck in non-ioaccel mode.
IOaccel mode (HP SSD Smart Path) is disabled by driver upon error detection.
Driver relied on idea that request would be retried through normal path, and a
subsequent error would occur on that path, and be processed by controller
firmware. As part of that process, controller disables ioaccel mode and later
reinstates it, signalling driver to change modes.
In some error cases, the error will not duplicate on the standard path,
so the driver could get stuck in non-ioaccel mode.
To avoid that, we allow driver to request a rescan during the next run of the
rescan thread.
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Allow SSD Smart Path for a controller to be disabled by
the user, regardless of settings in controller firmware
or array configuration.
To disable: echo 0 > /sys/class/scsi_host/host<id>/acciopath_status
To re-enable: echo 1 > /sys/class/scsi_host/host<id>/acciopath_status
To check state: cat /sys/class/scsi_host/host<id>/acciopath_status
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Load balance across members of a N-way mirror set, and
handle the meta-RAID levels: R10, R50, R60.
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Otherwise we could wind up using incorrect raid map data, and
then very bad things would likely happen.
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Underlying firmware cannot handle task abort on accelerated path (SSD Smart Path).
Change abort requests for accelerated path commands to physical target reset.
Send reset request on normal IO path.
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Mike Miller <michael.miller@canonical.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Signed-off-by: Scott Teel <scott.teel@hp.com>
Signed-off-by: Joe Handzik <Joseph.T.Handzik@hp.com>
Signed-off-by: Mike Miller <michael.miller@canonical.com>
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
