Commit Graph

3883 Commits

Author SHA1 Message Date
Sagi Grimberg
5c273b1677 mlx5_core: Simplify signature handover wqe for interleaved buffers
No need for repetition format pattern in case the data and protection
are already interleaved in the memory domain since the pattern
already exists. A single key entry is sufficient and may save some
extra fetch ops.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-05-27 11:52:58 -07:00
Sagi Grimberg
8524867b9c mlx5_core: Fix signature handover operation for interleaved buffers
When the data and protection are interleaved in the memory domain, no
need to expand the mkey total length.

At the moment no Linux user works (iSER initiator & target) in
interleaved mode. This may change in the future as for SCSI
pass-through devices there is no real point in target performing
de-interleaving and re-interleaving of the protection data in the PT
stage. Regardless, signature verbs support this mode.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-05-27 11:52:54 -07:00
Hariprasad S
7d0a73a40c RDMA/cxgb4: Update Kconfig to include Chelsio T5 adapter
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-28 17:29:41 -07:00
Steve Wise
c2f9da92f2 RDMA/cxgb4: Only allow kernel db ringing for T4 devs
The whole db drop avoidance stuff is for T4 only.  So we cannot allow
that to be enabled for T5 devices.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-28 17:29:41 -07:00
Steve Wise
92e5011ab0 RDMA/cxgb4: Force T5 connections to use TAHOE congestion control
This is required to work around a T5 HW issue.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-28 17:29:41 -07:00
Steve Wise
cc18b939e1 RDMA/cxgb4: Fix endpoint mutex deadlocks
In cases where the cm calls c4iw_modify_rc_qp() with the endpoint
mutex held, they must be called with internal == 1.  rx_data() and
process_mpa_reply() are not doing this.  This causes a deadlock
because c4iw_modify_rc_qp() might call c4iw_ep_disconnect() in some
!internal cases, and c4iw_ep_disconnect() acquires the endpoint mutex.
The design was intended to only do the disconnect for !internal calls.

Change rx_data(), FPDU_MODE case, to call c4iw_modify_rc_qp() with
internal == 1, and then disconnect only after releasing the mutex.

Change process_mpa_reply() to call c4iw_modify_rc_qp(TERMINATE) with
internal == 1 and set a new attr flag telling it to send a TERMINATE
message.  Previously this was implied by !internal.

Change process_mpa_reply() to return whether the caller should
disconnect after releasing the endpoint mutex.  Now rx_data() will do
the disconnect in the cases where process_mpa_reply() wants to
disconnect after the TERMINATE is sent.

Change c4iw_modify_rc_qp() RTS->TERM to only disconnect if !internal,
and to send a TERMINATE message if attrs->send_term is 1.

Change abort_connection() to not aquire the ep mutex for setting the
state, and make all calls to abort_connection() do so with the mutex
held.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-28 17:29:41 -07:00
Linus Torvalds
38137a5188 InfiniBand/RDMA updates for 3.15-rc2:
- Mostly cxgb4 fixes unblocked by the merge of some prerequisites via
    the net tree.
 
  - Drop deprecated MSI-X API use.
 
  - A couple other miscellaneous things.
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Merge tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband

Pull infiniband/rdma updates from Roland Dreier:

 - mostly cxgb4 fixes unblocked by the merge of some prerequisites via
   the net tree

 - drop deprecated MSI-X API use.

 - a couple other miscellaneous things.

* tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  RDMA/cxgb4: Fix over-dereference when terminating
  RDMA/cxgb4: Use uninitialized_var()
  RDMA/cxgb4: Add missing debug stats
  RDMA/cxgb4: Initialize reserved fields in a FW work request
  RDMA/cxgb4: Use pr_warn_ratelimited
  RDMA/cxgb4: Max fastreg depth depends on DSGL support
  RDMA/cxgb4: SQ flush fix
  RDMA/cxgb4: rmb() after reading valid gen bit
  RDMA/cxgb4: Endpoint timeout fixes
  RDMA/cxgb4: Use the BAR2/WC path for kernel QPs and T5 devices
  IB/mlx5: Add block multicast loopback support
  IB/mthca: Use pci_enable_msix_exact() instead of pci_enable_msix()
  IB/qib: Use pci_enable_msix_range() instead of pci_enable_msix()
2014-04-18 13:49:42 -07:00
Linus Torvalds
141eaccd01 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending
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
  ...
2014-04-12 16:51:08 -07:00
Mike Marciniszyn
b076808051 ib_srpt: Use correct ib_sg_dma primitives
The code was incorrectly using sg_dma_address() and
sg_dma_len() instead of ib_sg_dma_address() and
ib_sg_dma_len().

This prevents srpt from functioning with the
Intel HCA and indeed will corrupt memory
badly.

Cc: Bart Van Assche <bvanassche@acm.org>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Tested-by: Vinod Kumar <vinod.kumar@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Cc: stable@vger.kernel.org # 3.3+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-11 15:31:20 -07:00
Roland Dreier
5ae2866f52 Merge branches 'cxgb4', 'misc', 'mlx5' and 'qib' into for-next 2014-04-11 11:36:15 -07:00
Steve Wise
1d1ca9b4fd RDMA/cxgb4: Fix over-dereference when terminating
Need to get the endpoint reference before calling rdma_fini(), which
might fail causing us to not get the reference.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-11 11:36:10 -07:00
Steve Wise
97df1c6736 RDMA/cxgb4: Use uninitialized_var()
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-11 11:36:10 -07:00
Steve Wise
98a3e87990 RDMA/cxgb4: Add missing debug stats
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-11 11:36:09 -07:00
Steve Wise
c3f98fa291 RDMA/cxgb4: Initialize reserved fields in a FW work request
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-11 11:36:09 -07:00
Hariprasad Shenai
aec844df10 RDMA/cxgb4: Use pr_warn_ratelimited
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-11 11:36:08 -07:00
Steve Wise
a03d9f94cc RDMA/cxgb4: Max fastreg depth depends on DSGL support
The max depth of a fastreg mr depends on whether the device supports
DSGL or not.  So compute it dynamically based on the device support
and the module use_dsgl option.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-11 11:36:08 -07:00
Steve Wise
b4e2901c52 RDMA/cxgb4: SQ flush fix
There is a race when moving a QP from RTS->CLOSING where a SQ work
request could be posted after the FW receives the RDMA_RI/FINI WR.
The SQ work request will never get processed, and should be completed
with FLUSHED status.  Function c4iw_flush_sq(), however was dropping
the oldest SQ work request when in CLOSING or IDLE states, instead of
completing the pending work request. If that oldest pending work
request was actually complete and has a CQE in the CQ, then when that
CQE is proceessed in poll_cq, we'll BUG_ON() due to the inconsistent
SQ/CQ state.

This is a very small timing hole and has only been hit once so far.

The fix is two-fold:

1) c4iw_flush_sq() MUST always flush all non-completed WRs with FLUSHED
   status regardless of the QP state.

2) In c4iw_modify_rc_qp(), always set the "in error" bit on the queue
   before moving the state out of RTS.  This ensures that the state
   transition will not happen while another thread is in
   post_rc_send(), because set_state() and post_rc_send() both aquire
   the qp spinlock.  Also, once we transition the state out of RTS,
   subsequent calls to post_rc_send() will fail because the "in error"
   bit is set.  I don't think this fully closes the race where the FW
   can get a FINI followed a SQ work request being posted (because
   they are posted to differente EQs), but the #1 fix will handle the
   issue by flushing the SQ work request.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-11 11:36:08 -07:00
Steve Wise
def4771f4b RDMA/cxgb4: rmb() after reading valid gen bit
Some HW platforms can reorder read operations, so we must rmb() after
we see a valid gen bit in a CQE but before we read any other fields
from the CQE.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-11 11:36:07 -07:00
Steve Wise
b33bd0cbfa RDMA/cxgb4: Endpoint timeout fixes
1) timedout endpoint processing can be starved. If there are continual
   CPL messages flowing into the driver, the endpoint timeout
   processing can be starved.  This condition exposed the other bugs
   below.

Solution: In process_work(), call process_timedout_eps() after each CPL
is processed.

2) Connection events can be processed even though the endpoint is on
   the timeout list.  If the endpoint is scheduled for timeout
   processing, then we must ignore MPA Start Requests and Replies.

Solution: Change stop_ep_timer() to return 1 if the ep has already been
queued for timeout processing.  All the callers of stop_ep_timer() need
to check this and act accordingly.  There are just a few cases where
the caller needs to do something different if stop_ep_timer() returns 1:

1) in process_mpa_reply(), ignore the reply and  process_timeout()
   will abort the connection.

2) in process_mpa_request, ignore the request and process_timeout()
   will abort the connection.

It is ok for callers of stop_ep_timer() to abort the connection since
that will leave the state in ABORTING or DEAD, and process_timeout()
now ignores timeouts when the ep is in these states.

3) Double insertion on the timeout list.  Since the endpoint timers
   are used for connection setup and teardown, we need to guard
   against the possibility that an endpoint is already on the timeout
   list.  This is a rare condition and only seen under heavy load and
   in the presense of the above 2 bugs.

Solution: In ep_timeout(), don't queue the endpoint if it is already on
the queue.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-11 11:36:07 -07:00
Steve Wise
fa658a98a2 RDMA/cxgb4: Use the BAR2/WC path for kernel QPs and T5 devices
Signed-off-by: Steve Wise <swise@opengridcomputing.com>

[ Fix cast from u64* to integer.  - Roland ]

Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-11 11:36:01 -07:00
Eli Cohen
f360d88a2e IB/mlx5: Add block multicast loopback support
Add support for the block multicast loopback QP creation flag along
the proper firmware API for that.

Signed-off-by: Eli Cohen <eli@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-10 18:43:32 -07:00
Alexander Gordeev
9684c2ea6d IB/mthca: Use pci_enable_msix_exact() instead of pci_enable_msix()
As result of the deprecation of the 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() or pci_enable_msi_exact() and
pci_enable_msix_range() or pci_enable_msix_exact() interfaces.

Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-10 18:41:34 -07:00
Alexander Gordeev
bf3f043e7b IB/qib: Use pci_enable_msix_range() instead of pci_enable_msix()
As result of the deprecation of the 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>
Acked-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-10 18:39:13 -07:00
Nicholas Bellinger
e70beee783 target: Pass in transport supported PI at session initialization
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>
2014-04-07 01:48:54 -07:00
Sagi Grimberg
f225225848 Target/iser: Use Fastreg only if device supports signature
Fastreg is mandatory for signature, so if the
device doesn't support it we don't need to use it.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-07 01:48:52 -07:00
Nicholas Bellinger
03e7848a64 iser-target: Add missing se_cmd put for WRITE_PENDING in tx_comp_err
This patch fixes a bug where outstanding RDMA_READs with WRITE_PENDING
status require an extra target_put_sess_cmd() in isert_put_cmd() code
when called from isert_cq_tx_comp_err() + isert_cq_drain_comp_llist()
context during session shutdown.

The extra kref PUT is required so that transport_generic_free_cmd()
invokes the last target_put_sess_cmd() -> target_release_cmd_kref(),
which will complete(&se_cmd->cmd_wait_comp) the outstanding se_cmd
descriptor with WRITE_PENDING status, and awake the completion in
target_wait_for_sess_cmds() to invoke TFO->release_cmd().

The bug was manifesting itself in target_wait_for_sess_cmds() where
a se_cmd descriptor with WRITE_PENDING status would end up sleeping
indefinately.

Acked-by: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: <stable@vger.kernel.org> #3.10+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-07 01:48:51 -07:00
Nicholas Bellinger
131e6abc67 target: Add TFO->abort_task for aborted task resources release
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>
2014-04-07 01:48:51 -07:00
Nicholas Bellinger
f46d6a8a01 iser-target: Match FRMR descriptors to available session tags
This patch changes isert_conn_create_fastreg_pool() to follow
logic in iscsi_target_locate_portal() for determining how many
FRMR descriptors to allocate based upon the number of possible
per-session command slots that are available.

This addresses an OOPs in isert_reg_rdma() where due to the
use of ISCSI_DEF_XMIT_CMDS_MAX could end up returning a bogus
fast_reg_descriptor when the number of active tags exceeded
the original hardcoded max.

Note this also includes moving isert_conn_create_fastreg_pool()
from isert_connect_request() to isert_put_login_tx() before
posting the final Login Response PDU in order to determine the
se_nacl->queue_depth (eg: number of tags) per session the target
will be enforcing.

v2 changes:
  - Move isert_conn->conn_fr_pool list_head init into
    isert_conn_request()
v3 changes:
  - Drop unnecessary list_empty() check in isert_reg_rdma()
    (Sagi)

Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Or Gerlitz <ogerlitz@mellanox.com>
Cc: <stable@vger.kernel.org> #3.12+
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-07 01:48:50 -07:00
Sagi Grimberg
5bac4b1a1f Target/iser: Fail SCSI WRITE command if device detected integrity error
If during data-transfer a data-integrity error was detected we
must fail the command with CHECK_CONDITION and not execute
the command.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Reported-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-07 01:48:49 -07:00
Sagi Grimberg
96b7973e1c Target/iser: Move check signature status to a function
Remove code duplication from RDMA_READ and RDMA_WRITE
completions that do basically the same check.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-07 01:48:49 -07:00
Sagi Grimberg
897bb2c916 Target/iser: Consider DIF and RDMA_READ completions when calculating post_send counter
If protection is involved, iSER target must wait for
completion of RDMA_READ before sending SCSI response.
So we must consider that when calculating post_send_buf_count
additions, also when processing good/error completions.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-07 01:48:48 -07:00
Sagi Grimberg
c2caa20777 Target/iser: Fix signature work requests accounting
As REG_SIG_MR work request and it's LOCAL_INVALIDATE are
not accounted in post_send_buf_count we must color these
with ISER_FASTREG_LI_WRID in order to process their error
completions when the QP flushes.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-07 01:48:48 -07:00
Sagi Grimberg
9e961ae73c IB/isert: Support T10-PI protected transactions
In case the Target core passed transport T10 protection
operation:

1. Register data buffer (data memory region)
2. Register protection buffer if exsists (prot memory region)
3. Register signature region (signature memory region)
   - use work request IB_WR_REG_SIG_MR
4. Execute RDMA
5. Upon RDMA completion check the signature status
   - if succeeded send good SCSI response
   - if failed send SCSI bad response with appropriate sense buffer

(Fix up compile error in isert_reg_sig_mr, and fix up incorrect
 se_cmd->prot_type -> TARGET_PROT_NORMAL comparision - nab)
(Fix failed sector assignment in isert_completion_rdma_* - Sagi + nab)
(Fix enum assignements for protection type - Sagi)
(Fix devision on 32-bit in isert_completion_rdma_* - Sagi + Fengguang)
(Fix context change for v3.14-rc6 code - nab)
(Fix iscsit_build_rsp_pdu inc_statsn flag usage - nab)

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-07 01:48:47 -07:00
Sagi Grimberg
f93f3a70da IB/isert: Accept RDMA_WRITE completions
In case of protected transactions, we will need to check the
protection status of the transaction before sending SCSI response.
So be ready for RDMA_WRITE completions. currently we don't ask
for these completions, but for T10-PI we will.

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-07 01:48:46 -07:00
Sagi Grimberg
d3e125dac1 IB/isert: Initialize T10-PI resources
Introduce pi_context to hold relevant RDMA protection resources.
We eliminate data_key_valid boolean and replace it with indicators
container to indicate:
- Is the descriptor protected (registered via signature MR)
- Is the data_mr key valid (can spare LOCAL_INV WR)
- Is the prot_mr key valid (can spare LOCAL_INV WR)
- Is the sig_mr key valid (can spare LOCAL_INV WR)

Upon connection establishment check if network portal is T10-PI
enabled and allocate T10-PI resources if necessary, allocate
signature enabled memory regions and mark connection queue-pair
as signature enabled.

(Fix context change for v3.14-rc6 code - nab)

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-07 01:48:46 -07:00
Sagi Grimberg
e3d7e4c30c IB/isert: Introduce isert_map/unmap_data_buf
export map/unmap data buffer to a routine that may
be used in various places in the code and keep the
mapping data in a designated descriptor. Also, let
isert_fast_reg_mr to decide weather to use global
MR or do fast registration.

This commit does not change any functionality.

(Fix context change for v3.14-rc6 code - nab)

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
2014-04-07 01:48:45 -07:00
Linus Torvalds
877f075aac 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.
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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
  ...
2014-04-03 16:57:19 -07:00
Roland Dreier
f7eaa7ed8f Merge branches 'core', 'cxgb4', 'ip-roce', 'iser', 'misc', 'mlx4', 'nes', 'ocrdma', 'qib', 'sgwrapper', 'srp' and 'usnic' into for-next 2014-04-03 08:30:17 -07:00
Selvin Xavier
2d8f57d56f RDMA/ocrdma: Unregister inet notifier when unloading ocrdma
Unregister the inet notifier during ocrdma unload to avoid a panic after
driver unload.

Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:30:07 -07:00
Roland Dreier
7a1e89d8b7 RDMA/ocrdma: Fix warnings about pointer <-> integer casts
We should cast pointers to and from unsigned long to turn them into ints.

Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:30:07 -07:00
Devesh Sharma
fad51b7d36 RDMA/ocrdma: Code clean-up
Clean up code.  Also modifying GSI QP to error during ocrdma_close is fixed.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:30:06 -07:00
Selvin Xavier
334b8db3a6 RDMA/ocrdma: Display FW version
Adding a sysfs file for getting the FW version.

Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:30:06 -07:00
Selvin Xavier
a51f06e167 RDMA/ocrdma: Query controller information
Issue mailbox commands to query ocrdma controller information and phy
information and print them while adding ocrdma device.

Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:30:05 -07:00
Selvin Xavier
bbc5ec524e RDMA/ocrdma: Support non-embedded mailbox commands
Added a routine to issue non-embedded mailbox commands for handling
large mailbox request/response data.

Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:30:05 -07:00
Selvin Xavier
1228056bcf RDMA/ocrdma: Handle CQ overrun error
Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:30:05 -07:00
Selvin Xavier
ac578aef8b RDMA/ocrdma: Display proper value for max_mw
Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:30:04 -07:00
Selvin Xavier
cf5788ade7 RDMA/ocrdma: Use non-zero tag in SRQ posting
As part of SRQ receive buffers posting we populate a non-zero tag
which will be returned in SRQ receive completions.

Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:30:04 -07:00
Selvin Xavier
9d1878a369 RDMA/ocrdma: Memory leak fix in ocrdma_dereg_mr()
Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:30:03 -07:00
Devesh Sharma
2e6e9f2bb8 RDMA/ocrdma: Increment abi version count
Increment the ABI version count for driver/library interface.

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:30:02 -07:00
Devesh Sharma
0154410bd4 RDMA/ocrdma: Update version string
Update the driver vrsion string and node description string

Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
2014-04-03 08:29:59 -07:00