Commit Graph

229 Commits

Author SHA1 Message Date
Shiraz Saleem
3e64f8d6f5 i40iw: Remove pre-production workaround for resource profile 1
Support for resource profile 1 is currenlty deprecated due to
a pre-production errata. Remove this workaround as its no longer
needed.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-04-03 13:40:39 -06:00
Matan Barak
0ede73bc01 IB/uverbs: Extend uverbs_ioctl header with driver_id
Extending uverbs_ioctl header with driver_id and another reserved
field. driver_id should be used in order to identify the driver.
Since every driver could have its own parsing tree, this is necessary
for strace support.
Downstream patches take off the EXPERIMENTAL flag from the ioctl() IB
support and thus we add some reserved fields for future usage.

Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-19 14:45:17 -06:00
Henry Orosco
546b1452fd i40iw: Tear-down connection after CQP Modify QP failure
There is no explicit tear-down sequence initiated on
connections if the Control QP OP, Modify QP to close,
fails. Fix this by triggering a driver generated
Asynchronous Event (AE) on Modify QP failures and
tear-down the connection on receipt of the AE.

This fix can be generalized to other Modify QP failures
(i.e. RTS->TERM, IDLE->RTS, etc) as any modify failure
will require a connection tear-down.

Fixes: d374984179 ("i40iw: add files for iwarp interface")
Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-15 15:58:05 -06:00
Henry Orosco
a8b9234b12 i40iw: Refactor of driver generated AEs
The flush CQP OP can be used to optionally generate
Asynchronous Events (AEs) in addition to QP flush.
Consolidate all HW AE generation code under a new
function i40iw_gen_ae which use the flush CQP OP
to only generate AEs.

Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-15 15:58:04 -06:00
Jason Gunthorpe
9a657b4c4a RDMA/i40iw: Move uapi header to include/uapi
All of these defines are part of the uABI for the driver, this
header duplicates providers/i40iw/i40iw-abi.h in rdma-core.

Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-15 15:58:03 -06:00
Arnd Bergmann
baa00fcde4 RDMA/i40iw: include linux/irq.h
We get a build failure on ARM unless the header is included explicitly:

drivers/infiniband/hw/i40iw/i40iw_verbs.c: In function 'i40iw_get_vector_affinity':
drivers/infiniband/hw/i40iw/i40iw_verbs.c:2747:9: error: implicit declaration of function 'irq_get_affinity_mask'; did you mean 'irq_create_affinity_masks'? [-Werror=implicit-function-declaration]
  return irq_get_affinity_mask(msix_vec->irq);
         ^~~~~~~~~~~~~~~~~~~~~
         irq_create_affinity_masks
drivers/infiniband/hw/i40iw/i40iw_verbs.c:2747:9: error: returning 'int' from a function with return type 'const struct cpumask *' makes pointer from integer without a cast [-Werror=int-conversion]
  return irq_get_affinity_mask(msix_vec->irq);

Fixes: 7e952b19eb ("i40iw: Implement get_vector_affinity API")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-03-14 16:09:56 -04:00
Shiraz Saleem
7e952b19eb i40iw: Implement get_vector_affinity API
Storage ULPs (like NVMEoF) benefit from exposing affinity mapping
per completion vector to find the optimal multi-queue affinity
assignments. The ULPs call the verbs API ib_get_vector_affinity
introduced in commit c66cd353bb ("RDMA/core: expose affinity mappings per
completion vector") to get the underlying devices affinity mappings.

Add support in driver to expose the affinity masks per MSI-X
completion vector.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-06 16:00:51 -07:00
Shiraz Saleem
7de8b3576a i40iw: Improve CM node lookup time on connection setup
Currently all CM nodes involved in a connection are
maintained in a connected_node list per dev. During
connection setup, we need to search this every time
we receive a packet on the iWARP LAN Queue (ILQ) and
this can be pretty inefficient for large number of
connections.

Fix this by organizing the CM nodes in two lists -
accelerated list and non-accelerated list. The search
on ILQ receive would be limited to only non accelerated
nodes. When a node moves to RTS, it is added to the
accelerated list.

Benchmarking ucmatose 16k connections shows a 20%
improvement in test completion time.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-06 16:00:51 -07:00
Mustafa Ismail
6b0c549fc6 i40iw: Refactor handling of txpend list
Currently the TX pending lists for IEQ and ILQ are
handled separately. The handling of both can be
consolidated in i40iw_poll_completion.

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-03-06 16:00:51 -07:00
Mustafa Ismail
f20d429511 i40iw: Free IEQ resources
The iWARP Exception Queue (IEQ) resources are not freed when a QP is
destroyed. Fix this by freeing IEQ resources when freeing QP resources.

Fixes: d374984179 ("i40iw: add files for iwarp interface")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-16 20:38:18 -07:00
Mustafa Ismail
ebb6c0c015 i40iw: Remove setting of rem_addr.len
Remove setting of rem_addr.len before calling iw_rdma_write,
iw_inline_rdma_write and rdma_read. rem_addr.len is not used in those
functions.

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-16 20:38:18 -07:00
Sindhu Devale
72b30e986d i40iw: Remove limit on re-posting AEQ entries to HW
Currently, if the number of processed Asynchronous Event Queue (AEQ)
entries exceeds 255, they are not returned to HW for re-use. During
scale-up, the unreturned AEQ entries can grow to the max AEQ size and
cause the HW to report an AEQ overflow.

Remove the check which limits the number of processed AEQ entries returned
to HW.

Fixes: 86dbcd0f12 ("RDMA/i40iw: add file to handle cqp calls")
Signed-off-by: Sindhu Devale <sindhu.devale@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-16 20:38:18 -07:00
Shiraz Saleem
6376e926af i40iw: Zero-out consumer key on allocate stag for FMR
If the application invalidates the MR before the FMR WR, HW parses the
consumer key portion of the stag and returns an invalid stag key
Asynchronous Event (AE) that tears down the QP.

Fix this by zeroing-out the consumer key portion of the allocated stag
returned to application for FMR.

Fixes: ee855d3b93f3 ("RDMA/i40iw: Add base memory management extensions")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-16 20:38:18 -07:00
Shiraz Saleem
23541b28e5 i40iw: Remove extra call to i40iw_est_sd()
Remove redundant estimate SD function call.  sd_needed should already be
updated at the end of the do while resource reduction loop.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-01-16 20:38:18 -07:00
Jia-Ju Bai
106b886306 i40iw: Replace mdelay with msleep in i40iw_wait_pe_ready
i40iw_wait_pe_ready is not called in an interrupt handler
nor holding a spinlock.
The function mdelay in it can be replaced with msleep,
to reduce busy wait.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2018-01-05 13:47:29 -05:00
Jason Gunthorpe
76a895d9e1 Merge branch 'from-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git
Patches for 4.16 that are dependent on patches sent to 4.15-rc.

These are small clean ups for the vmw_pvrdma and i40iw drivers.

* 'from-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma.git:
  RDMA/vmw_pvrdma: Remove usage of BIT() from UAPI header
  RDMA/vmw_pvrdma: Use refcount_t instead of atomic_t
  RDMA/vmw_pvrdma: Use more specific sizeof in kcalloc
  RDMA/vmw_pvrdma: Clarify QP and CQ is_kernel logic
  RDMA/vmw_pvrdma: Add UAR SRQ macros in ABI header file
  i40iw: Change accelerated flag to bool
2017-12-27 21:50:46 -07:00
Henry Orosco
66131e005e i40iw: Change accelerated flag to bool
The accelerated flag only utilizes two values: 0 and 1.
Modify accelerated flag in struct i40iw_cm_node to bool.

Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-27 21:37:26 -07:00
Tatyana Nikolova
fefa06811c i40iw: Fix the connection ORD value for loopback
The accepting QP ORD value should be adjusted not to
exceed the peer QP IRD value (RFC 6581). This is
skipped for loopback. After the ORD is validated
by i40iw_record_ird_ord(), adjust the ORD value of
the loopback accepting QP to prevent overrunning the
IRD space of the peer QP. Also move the ORD accounting
for 0-byte RDMA read to i40iw_record_ird_ord().

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:46:11 -07:00
Tatyana Nikolova
ce9ce74145 i40iw: Validate correct IRD/ORD connection parameters
Casting to u16 before validating IRD/ORD connection
parameters could cause recording wrong IRD/ORD values
in the cm_node. Validate the IRD/ORD parameters as
they are passed by the application before recording
them.

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:39:48 -07:00
Shiraz Saleem
756f77d216 i40iw: Ignore LLP_DOUBT_REACHABILITY AE
The LLP_DOUBT_REACHABILITY Asynchronous Event (AE) is an early
warning of a connection issue. It is followed by LLP_TOO_MANY_RETRIES
AE, if the retransmit threshold is reached and recovery is not possible
for the connection.

Currently we terminate the connection on receiving the
LLP_DOUBT_REACHABILITY AE. Ignore this AE and
terminate the connection only on LLP_TOO_MANY_RETRIES AE.

This improves the user experience on cable disconnect/reconnect
scenario while running iWARP traffic. On cable disconnect,
the QP traffic is paused and the user has a larger and more
reasonable timeout within which if the cable is reconnected,
traffic can continue.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:39:21 -07:00
Shiraz Saleem
df8b13a1b2 i40iw: Fix sequence number for the first partial FPDU
Partial FPDU processing is broken as the sequence number
for the first partial FPDU is wrong due to incorrect
Q2 buffer offset. The offset should be 64 rather than 16.

Fixes: 786c6adb3a ("i40iw: add puda code")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:39:20 -07:00
Shiraz Saleem
3020f252c3 i40iw: Selectively teardown QPs on IP addr change event
On IP address change event, all connected QPs are torn down
irrespective of whether IP address is involved in a connection.

Only teardown connections those source or destination address
matches the netdev interface IP address being changed, and if
they are on the same VLAN as the netdev.

Fixes: e5e74b61b1 ("i40iw: Add IP addr handling on netdev events")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:39:07 -07:00
Shiraz Saleem
0c5d515546 i40iw: Add notifier for network device events
Register a netdevice notifier for netdev UP/DOWN
notification events and report the appropriate ib event.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:38:05 -07:00
Shiraz Saleem
fe99afd1fe i40iw: Correct Q1/XF object count equation
Lower Inbound RDMA Read Queue (Q1) object count by a factor of 2
as it is incorrectly doubled. Also, round up Q1 and Transmit FIFO (XF)
object count to power of 2 to satisfy hardware requirement.

Fixes: 86dbcd0f12 ("i40iw: add file to handle cqp calls")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:38:05 -07:00
Shiraz Saleem
8758768ad8 i40iw: Use utility function roundup_pow_of_two()
Consolidate all power of 2 round calculations to
use kernel utility function roundup_pow_of_two().

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:37:51 -07:00
Shiraz Saleem
f32b766cf7 i40iw: Set MAX_IRD_SIZE to 64
Increase I40IW_MAX_IRD_SIZE to 64 which is the device limit.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-22 13:33:30 -07:00
Mustafa Ismail
24b9abab15 i40iw: Reinitialize add_sd_cnt
add_sd_cnt in info structure passed to i40iw_create_hmc_obj_type
must be 0 and since it is modified during the call, it must be
reset in the loop. This avoids unnecessarily reprogramming the
SDs multiple times with the same values.

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-11 16:19:44 -07:00
Chien Tin Tung
807e005ab8 i40iw: Use sqsize to initialize cqp_requests elements
Use sqsize instead of I40IW_CQP_SW_SQSIZE_2048 to initialize
cqp_requests elements in the for-loop as sqsize is used
to allocate memory for cqp_requests.

Signed-off-by: Chien Tin Tung <chien.tin.tung@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-11 16:19:43 -07:00
Arnd Bergmann
40dc8c4df0 i40iw: remove unused 'timeval' struct member
There is a stale entry in i40iw_cm_tcp_context that apparently
was copied from the 'nes' driver but never used in i40iw.
I'm trying to kill off all users of timeval as part of the
y2038-safety work, so let's just remove this one.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-11 16:19:42 -07:00
Geert Uytterhoeven
1c3081a8ad i40w: Remove garbage at end of INFINIBAND_I40IW Kconfig section
Remove leftover garbage (containing Kconfig dependencies for another
symbol?)

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-11 16:19:41 -07:00
Henry Orosco
a7c6dfe215 i40iw: Notify user of established connection after QP in RTS
Established CM event is sent prior to modifying QP to RTS state.
This can result in application closing the connection before the
QP is actually in RTS state. Move sending of established CM
event to after modify QP to RTS.

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-01 12:21:26 -07:00
Tatyana Nikolova
8bb45252bb i40iw: Move MPA request event for loopback after connect
For loopback, a MPA request event is generated when cm_node
is initialized, which allows applications to act on the
connect request before i40iw_connect() has completed.
In some cases, the reject flow executes in parallel with
the connect flow and doesn't delete an APBVT entry,
because the apbvt_set variable is still not set by the
connect flow. Move the MPA request event to the end of
i40iw_connect() to notify application for a connect
request, after connect has completed.

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Henry Orosco <henry.orosco@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-01 12:21:25 -07:00
Mustafa Ismail
a283cdc4d3 i40iw: Correct ARP index mask
The ARP table entry indexes are aliased to 12bits
instead of the intended 16bits when uploaded to
the QP Context. This will present an issue when the
number of connections exceeds 4096 as ARP entries are
reused. Fix this by adjusting the mask to account for
the full 16bits.

Fixes: 4e9042e647 ("i40iw: add hw and utils files")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-01 12:21:25 -07:00
Mustafa Ismail
10499986db i40iw: Do not free sqbuf when event is I40IW_TIMER_TYPE_CLOSE
When the event type is I40IW_TIMER_TYPE_CLOSE, there is no sqbuf and
it should not be freed as one in i40iw_schedule_cm_timer().

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-01 12:21:25 -07:00
Chien Tin Tung
100d6de2ce i40iw: Allocate a sdbuf per CQP WQE
Currently there is only one sdbuf per Control QP (CQP) for
programming Segment Descriptor (SD). If multiple SD work
requests are posted simultaneously, the sdbuf is reused
by all WQEs and new WQEs can corrupt previous WQEs sdbuf
leading to incorrect SD programming.

Fix this by allocating one sdbuf per CQP SQ WQE. When an
SD command is posted, it will use the corresponding sdbuf
for the WQE.

Fixes: 86dbcd0f12 ("i40iw: add file to handle cqp calls")
Signed-off-by: Chien Tin Tung <chien.tin.tung@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2017-12-01 12:21:24 -07:00
Linus Torvalds
ad0835a930 Updates for 4.15 kernel merge window
- Add iWARP support to qedr driver
 - Lots of misc fixes across subsystem
 - Multiple update series to hns roce driver
 - Multiple update series to hfi1 driver
 - Updates to vnic driver
 - Add kref to wait struct in cxgb4 driver
 - Updates to i40iw driver
 - Mellanox shared pull request
 - timer_setup changes
 - massive cleanup series from Bart Van Assche
 - Two series of SRP/SRPT changes from Bart Van Assche
 - Core updates from Mellanox
 - i40iw updates
 - IPoIB updates
 - mlx5 updates
 - mlx4 updates
 - hns updates
 - bnxt_re fixes
 - PCI write padding support
 - Sparse/Smatch/warning cleanups/fixes
 - CQ moderation support
 - SRQ support in vmw_pvrdma
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

Pull rdma updates from Doug Ledford:
 "This is a fairly plain pull request. Lots of driver updates across the
  stack, a huge number of static analysis cleanups including a close to
  50 patch series from Bart Van Assche, and a number of new features
  inside the stack such as general CQ moderation support.

  Nothing really stands out, but there might be a few conflicts as you
  take things in. In particular, the cleanups touched some of the same
  lines as the new timer_setup changes.

  Everything in this pull request has been through 0day and at least two
  days of linux-next (since Stephen doesn't necessarily flag new
  errors/warnings until day2). A few more items (about 30 patches) from
  Intel and Mellanox showed up on the list on Tuesday. I've excluded
  those from this pull request, and I'm sure some of them qualify as
  fixes suitable to send any time, but I still have to review them
  fully. If they contain mostly fixes and little or no new development,
  then I will probably send them through by the end of the week just to
  get them out of the way.

  There was a break in my acceptance of patches which coincides with the
  computer problems I had, and then when I got things mostly back under
  control I had a backlog of patches to process, which I did mostly last
  Friday and Monday. So there is a larger number of patches processed in
  that timeframe than I was striving for.

  Summary:
   - Add iWARP support to qedr driver
   - Lots of misc fixes across subsystem
   - Multiple update series to hns roce driver
   - Multiple update series to hfi1 driver
   - Updates to vnic driver
   - Add kref to wait struct in cxgb4 driver
   - Updates to i40iw driver
   - Mellanox shared pull request
   - timer_setup changes
   - massive cleanup series from Bart Van Assche
   - Two series of SRP/SRPT changes from Bart Van Assche
   - Core updates from Mellanox
   - i40iw updates
   - IPoIB updates
   - mlx5 updates
   - mlx4 updates
   - hns updates
   - bnxt_re fixes
   - PCI write padding support
   - Sparse/Smatch/warning cleanups/fixes
   - CQ moderation support
   - SRQ support in vmw_pvrdma"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (296 commits)
  RDMA/core: Rename kernel modify_cq to better describe its usage
  IB/mlx5: Add CQ moderation capability to query_device
  IB/mlx4: Add CQ moderation capability to query_device
  IB/uverbs: Add CQ moderation capability to query_device
  IB/mlx5: Exposing modify CQ callback to uverbs layer
  IB/mlx4: Exposing modify CQ callback to uverbs layer
  IB/uverbs: Allow CQ moderation with modify CQ
  iw_cxgb4: atomically flush the qp
  iw_cxgb4: only call the cq comp_handler when the cq is armed
  iw_cxgb4: Fix possible circular dependency locking warning
  RDMA/bnxt_re: report vlan_id and sl in qp1 recv completion
  IB/core: Only maintain real QPs in the security lists
  IB/ocrdma_hw: remove unnecessary code in ocrdma_mbx_dealloc_lkey
  RDMA/core: Make function rdma_copy_addr return void
  RDMA/vmw_pvrdma: Add shared receive queue support
  RDMA/core: avoid uninitialized variable warning in create_udata
  RDMA/bnxt_re: synchronize poll_cq and req_notify_cq verbs
  RDMA/bnxt_re: Flush CQ notification Work Queue before destroying QP
  RDMA/bnxt_re: Set QP state in case of response completion errors
  RDMA/bnxt_re: Add memory barriers when processing CQ/EQ entries
  ...
2017-11-15 14:54:53 -08:00
Greg Kroah-Hartman
b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license
Many source files in the tree are missing licensing information, which
makes it harder for compliance tools to determine the correct license.

By default all files without license information are under the default
license of the kernel, which is GPL version 2.

Update the files which contain no license information with the 'GPL-2.0'
SPDX license identifier.  The SPDX identifier is a legally binding
shorthand, which can be used instead of the full boiler plate text.

This patch is based on work done by Thomas Gleixner and Kate Stewart and
Philippe Ombredanne.

How this work was done:

Patches were generated and checked against linux-4.14-rc6 for a subset of
the use cases:
 - file had no licensing information it it.
 - file was a */uapi/* one with no licensing information in it,
 - file was a */uapi/* one with existing licensing information,

Further patches will be generated in subsequent months to fix up cases
where non-standard license headers were used, and references to license
had to be inferred by heuristics based on keywords.

The analysis to determine which SPDX License Identifier to be applied to
a file was done in a spreadsheet of side by side results from of the
output of two independent scanners (ScanCode & Windriver) producing SPDX
tag:value files created by Philippe Ombredanne.  Philippe prepared the
base worksheet, and did an initial spot review of a few 1000 files.

The 4.13 kernel was the starting point of the analysis with 60,537 files
assessed.  Kate Stewart did a file by file comparison of the scanner
results in the spreadsheet to determine which SPDX license identifier(s)
to be applied to the file. She confirmed any determination that was not
immediately clear with lawyers working with the Linux Foundation.

Criteria used to select files for SPDX license identifier tagging was:
 - Files considered eligible had to be source code files.
 - Make and config files were included as candidates if they contained >5
   lines of source
 - File already had some variant of a license header in it (even if <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-02 11:10:55 +01:00
Bob Sharp
d2782739c1 i40iw: Move cqp_cmd_head init to CQP initialization
Control QP (CQP) command backlog list is initialized at
device initialization time.  It is not reinitialized in
the reset flow.  Move the initialization to CQP creation
time so the list can be initialized correctly for reset as well.

Fixes: 86dbcd0f12 ("i40iw: add file to handle cqp calls")
Signed-off-by: Bob Sharp <Robert.O.Sharp@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Ivan Barrera
f535b56c39 i40iw: Remove UDA QP from QoS list if creation fails
If User-space Direct Access (UDA) QP creation fails,
the QP entry is not removed from QoS list. Fix this
by removing QP from QoS list if create QP fails.

Fixes: 0fc2dc5889 ("i40iw: Add Quality of Service support")
Signed-off-by: Ivan Barrera <ivan.d.barrera@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Christopher Bednarz
56b2f52310 i40iw: Clear CQP Head/Tail during initialization
Clear Control Queue Pair (CQP) Head/Tail on CQP
initialization as during an adapter reset, these
values are not reinitialized. Tail is cleared by
writing 0 to CQP's tail register. Head is cleared
by writing 0 to CQP's doorbell register.

Fixes: 86dbcd0f12 ("i40iw: add file to handle cqp calls")
Signed-off-by: Christopher Bednarz <christopher.n.bednarz@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Shiraz Saleem
1196923838 i40iw: Refactor queue depth calculation
Queue depth calculations use a mix of work requests
and actual number of bytes. Consolidate all calculations
using minimum WQE size to avoid confusion.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Shiraz Saleem
5b4a1a8b87 i40iw: Reinitialize IEQ on MTU change
On a netdev MTU change event, the iWARP
Exception Queue (IEQ) buffers may not be
sized properly to handle the new MTU.

Reinitialize the IEQ with new MTU size on MTU
change event.

Also, add define for the max ethernet frame size
field in IEQ QP context instead of the snd_mss
define which is for iWARP QPs' MSS field.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Shiraz Saleem
9381699eed i40iw: Move ceq_valid to i40iw_sc_dev structure
Completion Event Queues are created and destroyed on
a per device basis as opposed to per User-space Direct
Access resource.

Move ceq_valid to the correct place in i40iw_sc_dev
from i40iw_puda_rsrc.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Shiraz Saleem
343d86bd45 i40iw: Account for IPv6 header when setting MSS
The IPv6 header size is not subtracted from MTU when MSS is
set for QPs.

Save MTU opposed to MSS in the vsi struct during
initialization and calculate the MSS based on IPv4 vs
IPv6 connection.

Fixes: f27b4746f3 ("i40iw: add connection management code")
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Mustafa Ismail
b0d4f70369 i40iw: Remove unused structures
Some structures for post SQ operation are not used.
Remove the following:

i40iw_post_send_w_inv
i40iw_post_inline_send_w_inv
send_w_sol
send_w_inv
send_w_sol_inv
inline_send_w_sol
inline_send_w_inv
inline_send_w_sol_inv

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Mustafa Ismail
66f49f88ae i40iw: Move exception_lan_queue to VSI structure
Consolidate exception_lan_queue under VSI structure
where it belongs. Remove it from device and QP structures.

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Mustafa Ismail
de9f063468 i40iw: Remove unused static_rsrc from i40iw_create_qp_info
The field static_rsrc in i40iw_create_qp_info is unused
and not needed. Remove it.

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Mustafa Ismail
4236f4b99e i40iw: Ignore AE source field in AEQE for some AEs
The AE source field in Asynchronous Event Queue Entry (AEQE) is
not set by the hardware for some AEs, but the code assumes it does.
This results in incorrect processing of some AEs.
Fix this by setting ae_src to I40IW_AE_SOURCE_RSVD for those AEs.

Fixes: 86dbcd0f12 ("i40iw: add file to handle cqp calls")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Mustafa Ismail
2d7099fc3d i40iw: Cleanup AE processing
Remove unimplemented Asynchronous Events (AE) and correct names.

Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:28:46 -04:00
Doug Ledford
894b82c427 Merge branch 'timer_setup' into for-next
Conflicts:
	drivers/infiniband/hw/cxgb4/cm.c
	drivers/infiniband/hw/qib/qib_driver.c
	drivers/infiniband/hw/qib/qib_mad.c

There were minor fixups needed in these files.  Just minor context diffs
due to patches from independent sources touching the same basic area.

Signed-off-by: Doug Ledford <dledford@redhat.com>
2017-10-18 13:12:09 -04:00