Commit graph

246 commits

Author SHA1 Message Date
Dick Kennedy 1fe68477d2 scsi: lpfc: Fix plogi collision that causes illegal state transition
Message "0271 Illegal State Transition: node" seen in logs, all luns are
unuseable for that target.

A window exists in the rcv_plogi path where if the state is plogi issue
but the driver has not issued a plogi, then two reglogins will be sent
for the same RPI. The first one to complete will advance the state to
prli issue the second one will be detected as an illegal state, and
leave the node in an unusable state.

Correct the completion routine for the PLOGI ACC that detects the state
change when the driver starts discovery on the node again and drop the
REGLOGIN mailbox command.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-08-24 22:29:34 -04:00
James Smart d6564e5260 scsi: lpfc: Driver responds LS_RJT to Beacon Off ELS - Linux
Beacon OFF from switch is rejected by driver.

Driver fails Beacon OFF if frequency is set to 0. As per fc-ls spec,
status, capability, frequency and duration fields are only applicable
for Beacon ON.

Remove frequency and type checks. Reject Beacon ON if duration is non
zero.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-19 21:41:03 -04:00
James Smart 09559e8112 scsi: lpfc: Fix SLI3 drivers attempting NVME ELS commands.
In a server with an 8G adapter and a 32G adapter, running NVME and FCP,
the server would crash with the following stack.

RIP: 0010: ... lpfc_nvme_register_port+0x38/0x420 [lpfc]
 lpfc_nlp_state_cleanup+0x154/0x4f0 [lpfc]
 lpfc_nlp_set_state+0x9d/0x1a0 [lpfc]
 lpfc_cmpl_prli_prli_issue+0x35f/0x440 [lpfc]
 lpfc_disc_state_machine+0x78/0x1c0 [lpfc]
 lpfc_cmpl_els_prli+0x17c/0x1f0 [lpfc]
 lpfc_sli_sp_handle_rspiocb+0x39b/0x6b0 [lpfc]
 lpfc_sli_handle_slow_ring_event_s3+0x134/0x2d0 [lpfc]
 lpfc_work_done+0x8ac/0x13b0 [lpfc]
 lpfc_do_work+0xf1/0x1b0 [lpfc]

Crash, on the 8G adapter, is due to a vport which does not have a nvme
local port structure. It's not supposed to have one. NVME is not
supported on the 8G adapter, so the NVME PRLI, which started this flow
shouldn't have been sent in the first place.

Correct discovery engine to recognize when on an SLI3 rport, which
doesn't support SLI3, if the rport supports only NVME, don't send a NVME
PRLI. Instead, as no FC4 will be used, a LOGO is sent.  If rport is FCP
and NVME, only execute the SCSI PRLI.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-19 21:40:21 -04:00
James Smart dea37e82fa scsi: lpfc: Fix PRLI retry handling when target rejects it.
The nvmet driver was rejecting the initiator's PRLI because its reg_rpi
for the PLOGI was still outstanding.  The initiator would resend the
PRLI without delay and get the same answer.  The PRLI retries would
exhaust causing the nvme initiator to set the nvmet ndlp to UNMAPPED.

The driver's lpfc_els_retry handler did not have a policy for an LS_RJT
with explanation CMD_IN_PROGRESS for PRLI or NVME_PRLI.  This caused the
delay to remain at 0 but retry set 1.

Fix: When the ELS response is LS_RJT, TPC and the command was PRLI or
NVME_PRLI, just set the delay to 1000 mS to get a 1 second delay on the
PRLI retry.  This was enough to allow the REG_RPI to complete at the
target.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-06-12 21:37:31 -04:00
Guilherme G. Piccoli 53cf29d3b1 scsi: lpfc: Fix NULL pointer dereference during PCI error recovery
Recent commit on patchset "lpfc updates for 11.2.0.14" fixed an issue
about dereferencing a NULL pointer on port reset. The specific commit,
named "lpfc: Fix system crash when port is reset.", is missing a check
against NULL pointer on lpfc_els_flush_cmd() though.

Since we destroy the queues on adapter resets, like in PCI error
recovery path, we need the validation present on this patch in order to
avoid a NULL pointer dereference when trying to flush commands of ELS
wq, after it has been destroyed (which would lead to a kernel oops).

Tested-by: Raphael Silva <raphasil@linux.vnet.ibm.com>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-05-17 20:19:23 -04:00
James Smart ae9e28f36a scsi: lpfc: Add MDS Diagnostic support.
Added code to support Cisco MDS loopback diagnostic. The diagnostics run
various loopbacks including one which loops-back frame through the
driver.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-05-16 21:24:47 -04:00
James Smart 3120046a97 scsi: lpfc: Fix NVMEI driver not decrementing counter causing bad rport state.
During driver boot, a latency in the NVMET driver side causes the
incoming NVMEI PRLI to get rejected by the NVMET driver.  When this
happens, the NVMEI driver runs out of PRLI retries.  Bouncing the link
does not fix the situation.

If the NVMEI driver decides, on PRLI completion failures, to retry the
PRLI, always decrement the fc4_prli_sent counter.  This allows the PRLI
completion to resolve to UNMAPPED when NVMET rejects the PRLI.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-05-16 21:19:10 -04:00
James Smart 845d9e8df2 scsi: lpfc: Fix used-RPI accounting problem.
With 255 vports created a link trasition can casue a crash.

When going through discovery after a link bounce the driver is using
rpis before the cmd FCOE_POST_HDR_TEMPLATES completes. By doing that the
next rpi bumps the rpi range out of the boundary.

The fix it to increment the next_rpi only when the
FCOE_POST_HDR_TEMPLATE succeeds.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-05-16 21:17:28 -04:00
Jens Axboe b06e13c38d Merge branch 'nvme-4.12' of git://git.infradead.org/nvme into for-4.12/post-merge
Christoph writes:

"A couple more updates for 4.12.  The biggest pile is fc and lpfc
 updates from James, but there are various small fixes and cleanups as
 well."

Fixes up a few merge issues, and also a warning in
lpfc_nvmet_rcv_unsol_abort() if CONFIG_NVME_TARGET_FC isn't enabled.

Signed-off-by: Jens Axboe <axboe@fb.com>
2017-04-27 11:33:01 -06:00
James Smart 1c5b12f763 Fix implicit logo and RSCN handling for NVMET
NVMET didn't have any RSCN handling at all and
would not execute implicit LOGO when receiving a PLOGI
from an rport that NVMET had in state UNMAPPED.

Clean up the logic in lpfc_nlp_state_cleanup for
initiators (FCP and NVME). NVMET should not respond to
RSCN including allocating new ndlps so this code was
conditionalized when nvmet_support is true.  The check
for NLP_RCV_PLOGI in lpfc_setup_disc_node was moved
below the check for nvmet_support to allow the NVMET
to recover initiator nodes correctly.  The implicit
logo was introduced with lpfc_rcv_plogi when NVMET gets
a PLOGI on an ndlp in UNMAPPED state.  The RSCN handling
was modified to not respond to an RSCN in NVMET.  Instead
NVMET sends a GID_FT and determines if an NVMEP_INITIATOR
it has is UNMAPPED but no longer in the zone membership.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-24 09:25:49 +02:00
James Smart aeb3c8170b Add Fabric assigned WWN support.
Adding support for Fabric assigned WWPN and WWNN.

Firmware sends first FLOGI to fabric with vendor version changes.
On link up driver gets updated service parameter with FAWWN assigned port
name.  Driver sends 2nd FLOGI with updated fawwpn and modifies the
vport->fc_portname in driver.

Note:
Soft wwpn will not be allowed when fawwpn is enabled.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-24 09:25:49 +02:00
James Smart 9d3d340d19 Fix crash after issuing lip reset
When RPI is not available, driver sends WQE with invalid RPI value and
rejected by HBA.
lpfc 0000:82:00.3: 1:3154 BLS ABORT RSP failed, data:  x3/xa0320008
and
lpfc :2753 PLOGI failure DID:FFFFFA Status:x3/xa0240008

In this case, driver accesses rpi_ids array out of bounds.

Fix:
Check return value of lpfc_sli4_alloc_rpi(). Do not allocate
lpfc_nodelist entry if RPI is not available.

When RPI is not available, we will get discovery timeouts and
command drops for some of the vports as seen below.

lpfc :0273 Unexpected discovery timeout, vport State x0
lpfc :0230 Unexpected timeout, hba link state x5
lpfc :0111 Dropping received ELS cmd Data: x0 xc90c55 x0

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-24 09:25:49 +02:00
James Smart c07f10cd56 Fix PRLI ACC rsp for NVME
PRLI ACC from target is FCP oriented.

Word 0 was wrong. This was noticed by another nvmet-fc vendor that
was testing the lpfc nvme-fc initiator with their target.

Verified results with analyzer.

PRLI
BC B5 56 56  22 61 04 00  00 61 00 00  01 29 00 00  20 00 00 00
00 10 FF FF  00 00 00 00  20 14 00 18  28 00 00 00  00 00 00 00
00 00 00 00  00 00 00 20  00 00 00 00  9C D8 DA C9  BC 95 75 75

ACC
BC B5 56 56  23 61 00 00  00 61 04 00  01 98 00 00  30 00 00 00
00 10 00 18  00 00 00 00  02 14 00 18  28 00 01 00  00 00 00 00
00 00 00 00  00 00 00 18  00 00 00 00  B0 6B 07 57  BC B5 75 75

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
2017-04-24 09:25:48 +02:00
Dick Kennedy a71e3cdcfc scsi: lpfc: Fix PT2PT PRLI reject
lpfc cannot establish connection with targets that send PRLI in P2P
configurations.

If lpfc rejects a PRLI that is sent from a target the target will not
resend and will reject the PRLI send from the initiator.

[mkp: applied by hand]

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-03-23 11:19:37 -04:00
James Smart cd46cdedb3 scsi: lpfc: correct rdp diag portnames
NVME merge reverted diag port names to the physical port.
They should be the vport.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-03-06 23:04:23 -05:00
James Smart 5d181531bc scsi: lpfc: Fix crash during Hardware error recovery on SLI3 adapters
if REG_VPI fails, the driver was incorrectly issuing INIT_VFI
(a SLI4 command) on a SLI3 adapter.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-03-06 23:04:22 -05:00
James Smart d080abe0a8 scsi: lpfc: Update copyrights
Update copyrights to 2017 for all files touched in this patch set

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:44 -05:00
James Smart d613b6a7aa scsi: lpfc: NVME Target: bind to nvmet_fc api
NVME Target: Tie in to NVME Fabrics nvmet_fc LLDD target api

Adds the routines to:
- register and deregister the FC port as a nvmet-fc targetport
- binding of nvme queues to adapter WQs
- receipt and passing of NVME LS's to transport, sending transport response
- receipt of NVME FCP CMD IUs, processing FCP target io data transmission
  commands; transmission of FCP io response
- Abort operations for tgt io exchanges

[mkp: fixed space at end of file warning]

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:43 -05:00
James Smart 8c258641e0 scsi: lpfc: NVME Target: Merge into FC discovery
NVME Target: Merge into FC discovery

Adds NVME PRLI handling and Nameserver registrations for NVME

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:43 -05:00
James Smart 01649561a8 scsi: lpfc: NVME Initiator: bind to nvme_fc api
NVME Initiator: Tie in to NVME Fabrics nvme_fc LLDD initiator api

Adds the routines to:
- register and deregister the FC port as a nvme-fc initiator localport
- register and deregister remote FC ports as a nvme-fc remoteport
- binding of nvme queues to adapter WQs
- send/perform NVME LS's
- send/perform NVME FCP initiator io operations

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:43 -05:00
James Smart a0f2d3ef37 scsi: lpfc: NVME Initiator: Merge into FC discovery
NVME Initiator: Merge into FC discovery

Adds NVME PRLI support and Nameserver registrations and Queries for NVME

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:43 -05:00
James Smart 895427bd01 scsi: lpfc: NVME Initiator: Base modifications
NVME Initiator: Base modifications

This patch adds base modifications for NVME initiator support.

The base modifications consist of:
- Formal split of SLI3 rings from SLI-4 WQs (sometimes referred to as
  rings as well) as implementation now widely varies between the two.
- Addition of configuration modes:
   SCSI initiator only; NVME initiator only; NVME target only; and
   SCSI and NVME initiator.
   The configuration mode drives overall adapter configuration,
   offloads enabled, and resource splits.
   NVME support is only available on SLI-4 devices and newer fw.
- Implements the following based on configuration mode:
  - Exchange resources are split by protocol; Obviously, if only
     1 mode, then no split occurs. Default is 50/50. module attribute
     allows tuning.
  - Pools and config parameters are separated per-protocol
  - Each protocol has it's own set of queues, but share interrupt
    vectors.
     SCSI:
       SLI3 devices have few queues and the original style of queue
         allocation remains.
       SLI4 devices piggy back on an "io-channel" concept that
         eventually needs to merge with scsi-mq/blk-mq support (it is
	 underway).  For now, the paradigm continues as it existed
	 prior. io channel allocates N msix and N WQs (N=4 default)
	 and either round robins or uses cpu # modulo N for scheduling.
	 A bunch of module parameters allow the configuration to be
	 tuned.
     NVME (initiator):
       Allocates an msix per cpu (or whatever pci_alloc_irq_vectors
         gets)
       Allocates a WQ per cpu, and maps the WQs to msix on a WQ #
         modulo msix vector count basis.
       Module parameters exist to cap/control the config if desired.
  - Each protocol has its own buffer and dma pools.

I apologize for the size of the patch.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>

----
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-02-22 18:41:43 -05:00
Linus Torvalds cdc194705d SCSI misc on 20170220
This update includes the usual round of major driver updates (ncr5380,
 ufs, lpfc, be2iscsi, hisi_sas, storvsc, cxlflash, aacraid,
 megaraid_sas, ).  There's also an assortment of minor fixes and the
 major update of switching a bunch of drivers to pci_alloc_irq_vectors
 from Christoph.
 
 Signed-off-by: James E.J. Bottomley <jejb@linux.vnet.ibm.com>
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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull SCSI updates from James Bottomley:
 "This update includes the usual round of major driver updates (ncr5380,
  ufs, lpfc, be2iscsi, hisi_sas, storvsc, cxlflash, aacraid,
  megaraid_sas, ...).

  There's also an assortment of minor fixes and the major update of
  switching a bunch of drivers to pci_alloc_irq_vectors from Christoph"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (188 commits)
  scsi: megaraid_sas: handle dma_addr_t right on 32-bit
  scsi: megaraid_sas: array overflow in megasas_dump_frame()
  scsi: snic: switch to pci_irq_alloc_vectors
  scsi: megaraid_sas: driver version upgrade
  scsi: megaraid_sas: Change RAID_1_10_RMW_CMDS to RAID_1_PEER_CMDS and set value to 2
  scsi: megaraid_sas: Indentation and smatch warning fixes
  scsi: megaraid_sas: Cleanup VD_EXT_DEBUG and SPAN_DEBUG related debug prints
  scsi: megaraid_sas: Increase internal command pool
  scsi: megaraid_sas: Use synchronize_irq to wait for IRQs to complete
  scsi: megaraid_sas: Bail out the driver load if ld_list_query fails
  scsi: megaraid_sas: Change build_mpt_mfi_pass_thru to return void
  scsi: megaraid_sas: During OCR, if get_ctrl_info fails do not continue with OCR
  scsi: megaraid_sas: Do not set fp_possible if TM capable for non-RW syspdIO, change fp_possible to bool
  scsi: megaraid_sas: Remove unused pd_index from megasas_build_ld_nonrw_fusion
  scsi: megaraid_sas: megasas_return_cmd does not memset IO frame to zero
  scsi: megaraid_sas: max_fw_cmds are decremented twice, remove duplicate
  scsi: megaraid_sas: update can_queue only if the new value is less
  scsi: megaraid_sas: Change max_cmd from u32 to u16 in all functions
  scsi: megaraid_sas: set pd_after_lb from MR_BuildRaidContext and initialize pDevHandle to MR_DEVHANDLE_INVALID
  scsi: megaraid_sas: latest controller OCR capability from FW before sending shutdown DCMD
  ...
2017-02-21 11:51:42 -08:00
Linus Torvalds 42e1b14b6e Merge branch 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking updates from Ingo Molnar:
 "The main changes in this cycle were:

   - Implement wraparound-safe refcount_t and kref_t types based on
     generic atomic primitives (Peter Zijlstra)

   - Improve and fix the ww_mutex code (Nicolai Hähnle)

   - Add self-tests to the ww_mutex code (Chris Wilson)

   - Optimize percpu-rwsems with the 'rcuwait' mechanism (Davidlohr
     Bueso)

   - Micro-optimize the current-task logic all around the core kernel
     (Davidlohr Bueso)

   - Tidy up after recent optimizations: remove stale code and APIs,
     clean up the code (Waiman Long)

   - ... plus misc fixes, updates and cleanups"

* 'locking-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits)
  fork: Fix task_struct alignment
  locking/spinlock/debug: Remove spinlock lockup detection code
  lockdep: Fix incorrect condition to print bug msgs for MAX_LOCKDEP_CHAIN_HLOCKS
  lkdtm: Convert to refcount_t testing
  kref: Implement 'struct kref' using refcount_t
  refcount_t: Introduce a special purpose refcount type
  sched/wake_q: Clarify queue reinit comment
  sched/wait, rcuwait: Fix typo in comment
  locking/mutex: Fix lockdep_assert_held() fail
  locking/rtmutex: Flip unlikely() branch to likely() in __rt_mutex_slowlock()
  locking/rwsem: Reinit wake_q after use
  locking/rwsem: Remove unnecessary atomic_long_t casts
  jump_labels: Move header guard #endif down where it belongs
  locking/atomic, kref: Implement kref_put_lock()
  locking/ww_mutex: Turn off __must_check for now
  locking/atomic, kref: Avoid more abuse
  locking/atomic, kref: Use kref_get_unless_zero() more
  locking/atomic, kref: Kill kref_sub()
  locking/atomic, kref: Add kref_read()
  locking/atomic, kref: Add KREF_INIT()
  ...
2017-02-20 13:23:30 -08:00
Shyam Saini e01ea5e2a3 scsi: lpfc: Replace BUG() with BUG_ON()
Replace BUG() with BUG_ON() using coccinelle.

Signed-off-by: Shyam Saini <mayhs11saini@gmail.com>
Acked-by: James Smart <james.smart@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-20 16:48:33 -05:00
Johannes Thumshirn 8667f51595 scsi: lpfc: Set elsiocb contexts to NULL after freeing it
Set the elsiocb contexts to NULL after freeing as others depend on it.

Signed-off-by: Johannes Thumshirn <jthumshirn@suse.de>
Acked-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-17 14:14:32 -05:00
Peter Zijlstra 2c935bc572 locking/atomic, kref: Add kref_read()
Since we need to change the implementation, stop exposing internals.

Provide kref_read() to read the current reference count; typically
used for debug messages.

Kills two anti-patterns:

	atomic_read(&kref->refcount)
	kref->refcount.counter

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-01-14 11:37:18 +01:00
James Smart e0165f2044 scsi: lpfc: Clear the VendorVersion in the PLOGI/PLOGI ACC payload
Clear the VendorVersion in the PLOGI/PLOGI ACC payload

Vendor version info may have been set on fabric login. Before sending
PLOGI payloads, ensure that it's cleared.

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2017-01-05 00:21:11 -05:00
James Smart 401304cc0d scsi: lpfc: Fix lost target in pt-to-pt connect
Fix lost target in pt-to-pt connect

Change reject code to something that allows a retry

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-11-08 17:29:50 -05:00
Baoyou Xie bd4b3e5c8a scsi: lpfc: Mark symbols static where possible
We get a few warnings when building kernel with W=1:
drivers/scsi/lpfc/lpfc_sli.c:5693:1: warning: no previous prototype for 'lpfc_set_features' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_sli.c:8972:1: warning: no previous prototype for 'lpfc_sli_calc_ring' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4621:1: warning: no previous prototype for 'lpfc_rdp_res_link_service' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4633:1: warning: no previous prototype for 'lpfc_rdp_res_sfp_desc' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4698:1: warning: no previous prototype for 'lpfc_rdp_res_link_error' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4727:1: warning: no previous prototype for 'lpfc_rdp_res_bbc_desc' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4752:1: warning: no previous prototype for 'lpfc_rdp_res_oed_temp_desc' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4780:1: warning: no previous prototype for 'lpfc_rdp_res_oed_voltage_desc' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4809:1: warning: no previous prototype for 'lpfc_rdp_res_oed_txbias_desc' [-Wmissing-prototypes]
drivers/scsi/lpfc/lpfc_els.c:4838:1: warning: no previous prototype for 'lpfc_rdp_res_oed_txpower_desc' [-Wmissing-prototypes]
....

In fact, these functions are only used in the file in which they are
declared and don't need a declaration, but can be made static.  So this
patch marks these functions with 'static'.

Signed-off-by: Baoyou Xie <baoyou.xie@linaro.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-09-26 20:35:51 -04:00
James Smart 8eb8b960fd lpfc: Remove global lpfc_delay_discovery attribute in leiu of per-hba lpfc_delay_discovery
Remove global lpfc_delay_discovery attribute in leiu of per-hba
lpfc_delay_discovery

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-07-15 15:25:06 -04:00
James Smart 7bdedb34a0 lpfc: Add MDS Diagnostics Support
Add MDS Diagnostics Support

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-07-15 15:25:06 -04:00
James Smart 7d9333139e lpfc: Reject RDP ELS if port has no login
Reject RDP ELS if port has no login

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-07-15 15:25:06 -04:00
James Smart 3aaaa31417 lpfc: Correct Buffer credit descriptor values in RDP response
Correct Buffer credit descriptor values in RDP response

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-07-15 15:25:06 -04:00
James Smart 6c92d1d0ce lpfc: Correct RDP response sizing issue
Correct RDP response sizing issue

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-07-15 15:25:06 -04:00
James Smart 310429ef11 lpfc: Fix Transgression Flag of Optical Element descriptor for RDP on Linux
Fix Transgression Flag of Optical Element descriptor for RDP on Linux

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-07-15 15:25:06 -04:00
James Smart 506115777a lpfc: Update modified file copyrights
Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-04-11 16:57:09 -04:00
James Smart 8663cbbe3b lpfc: Fix interaction between fdmi_on and enable_SmartSAN
Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-04-11 16:57:09 -04:00
James Smart 5620498476 lpfc: Add support for SmartSAN 2.0
Revise versions to reflect SmartSAN 2.0 support

RDP updated to support additional descriptors:
  Credit descriptor
  Optical Element Data descriptors for Temperature, Voltage,
        Bias current, TX power and TX power.
  Optical Product Data descriptor.

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-04-11 16:57:09 -04:00
James Smart 342b59caa6 lpfc: Fix Device discovery failures during switch reboot test.
When the switch is rebooted, the lpfc driver fails to log
into the fabric, and Unexpected timeout message is seen.

Fix: Do not issue RegVFI if the FLOGI was internally aborted.

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2016-04-11 16:57:09 -04:00
Punit Vara 699acd6220 lpfc: Use kzalloc instead of kmalloc
This patch is to the lpfc_els.c which resolves following warning
reported by coccicheck:

WARNING: kzalloc should be used for rdp_context, instead of
kmalloc/memset

Signed-off-by: Punit Vara <punitvara@gmail.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Reviewed-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Reviewed-by: Sebastian Herbszt <herbszt@gmx.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-12-21 22:08:15 -05:00
James Smart a085e87c81 lpfc: Use new FDMI speed definitions for 10G, 25G and 40G FCoE.
Use new FDMI speed definitions for 10G, 25G and 40G FCoE.

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-12-21 22:04:04 -05:00
James Smart eb8d68c993 lpfc: Fix RDP ACC being too long.
Fix RDP ACC being too long.

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-12-21 22:02:45 -05:00
James Smart 81e7517723 lpfc: Fix RDP Speed reporting.
Fix RDP Speed reporting.

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-12-21 22:02:07 -05:00
James Smart 4258e98ee3 lpfc: Modularize and cleanup FDMI code in driver
Modularize, cleanup, add comments - for FDMI code in driver

Note: I don't like the comments with leading # - but as we have a lot if
present, I'm deferring to handle it in one big fix later.

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-12-21 22:01:20 -05:00
James Smart 4b7789b71c lpfc: Fix RegLogin failed error seen on Lancer FC during port bounce
Fix RegLogin failed error seen on Lancer FC during port bounce

Fix the statemachine and ref counting.

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-12-21 21:53:41 -05:00
James Smart d6de08cc46 lpfc: Fix the FLOGI discovery logic to comply with T11 standards
Fix the FLOGI discovery logic to comply with T11 standards

We weren't properly setting fabric parameters, such as R_A_TOV and E_D_TOV,
when we registered the vfi object in default configs and pt2pt configs.
Revise to now pass service params with the values to the firmware and
ensure they are reset on link bounce. Required reworking the call sequence
in the discovery threads.

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinicke <hare@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
2015-12-21 21:51:56 -05:00
Sudip Mukherjee e795042365 lpfc: fix memory leak and NULL dereference
kmalloc() can return NULL and without checking we were dereferencing it.
Moreover if kmalloc succeeds but the function fails in other parts then
we were returning the error code but we missed freeing lcb_context.
While at it fixed one related checkpatch warning.

Signed-off-by: Sudip Mukherjee <sudip@vectorindia.org>
Reviewed-by: James Smart <james.smart@avagotech.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-11-09 17:08:03 -08:00
James Smart 8fe5c16557 lpfc: The linux driver does not reinitiate discovery after a failed FLOGI
Forgot to clear FCF Discovery in-progress flag upon FLOGI failures.
Thus we didn't restart FLOGI.

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-10-27 10:21:43 +09:00
James Smart eec3d31219 lpfc: Fix for discovery failure in PT2PT when FLOGI's ELS ACC response gets aborted
Fix for discovery failure in PT2PT when FLOGI's ELS ACC response gets aborted

Change login state machine to:
- Restart FLOGI if prior is ABTS'd
- Reject incoming FLOGIs if we have one pending

The above ensures that we always finish FLOGI processing, regardless
of who initated FLOGI, before processing PLOGI's.

Signed-off-by: Dick Kennedy <dick.kennedy@avagotech.com>
Signed-off-by: James Smart <james.smart@avagotech.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: James Bottomley <JBottomley@Odin.com>
2015-10-27 10:18:59 +09:00