linux-toradex.git/include/linux/mlx4, branch v4.8-rc1

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma

2016-08-05T00:10:31+00:00

Pull base rdma updates from Doug Ledford:
 "Round one of 4.8 code: while this is mostly normal, there is a new
  driver in here (the driver was hosted outside the kernel for several
  years and is actually a fairly mature and well coded driver).  It
  amounts to 13,000 of the 16,000 lines of added code in here.

  Summary:

   - Updates/fixes for iw_cxgb4 driver
   - Updates/fixes for mlx5 driver
   - Add flow steering and RSS API
   - Add hardware stats to mlx4 and mlx5 drivers
   - Add firmware version API for RDMA driver use
   - Add the rxe driver (this is a software RoCE driver that makes any
     Ethernet device a RoCE device)
   - Fixes for i40iw driver
   - Support for send only multicast joins in the cma layer
   - Other minor fixes"

* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dledford/rdma: (72 commits)
  Soft RoCE driver
  IB/core: Support for CMA multicast join flags
  IB/sa: Add cached attribute containing SM information to SA port
  IB/uverbs: Fix race between uverbs_close and remove_one
  IB/mthca: Clean up error unwind flow in mthca_reset()
  IB/mthca: NULL arg to pci_dev_put is OK
  IB/hfi1: NULL arg to sc_return_credits is OK
  IB/mlx4: Add diagnostic hardware counters
  net/mlx4: Query performance and diagnostics counters
  net/mlx4: Add diagnostic counters capability bit
  Use smaller 512 byte messages for portmapper messages
  IB/ipoib: Report SG feature regardless of HW UD CSUM capability
  IB/mlx4: Don't use GFP_ATOMIC for CQ resize struct
  IB/hfi1: Disable by default
  IB/rdmavt: Disable by default
  IB/mlx5: Fix port counter ID association to QP offset
  IB/mlx5: Fix iteration overrun in GSI qps
  i40iw: Add NULL check for puda buffer
  i40iw: Change dup_ack_thresh to u8
  i40iw: Remove unnecessary check for moving CQ head
  ...

IB/mlx4: Add diagnostic hardware counters

2016-08-04T01:03:34+00:00

Expose IB diagnostic hardware counters.
The counters count IB events and are applicable for IB and RoCE.

The counters can be divided into two groups, per device and per port.
Device counters are always exposed.
Port counters are exposed only if the firmware supports per port counters.

rq_num_dup and sq_num_to are only exposed if we have firmware support
for them, if we do, we expose them per device and per port.
rq_num_udsdprd and num_cqovf are device only counters.

rq - denotes responder.
sq - denotes requester.

|-----------------------|---------------------------------------|
|	Name		|	Description			|
|-----------------------|---------------------------------------|
|rq_num_lle		| Number of local length errors		|
|-----------------------|---------------------------------------|
|sq_num_lle		| number of local length errors		|
|-----------------------|---------------------------------------|
|rq_num_lqpoe		| Number of local QP operation errors	|
|-----------------------|---------------------------------------|
|sq_num_lqpoe		| Number of local QP operation errors	|
|-----------------------|---------------------------------------|
|rq_num_lpe		| Number of local protection errors	|
|-----------------------|---------------------------------------|
|sq_num_lpe		| Number of local protection errors	|
|-----------------------|---------------------------------------|
|rq_num_wrfe		| Number of CQEs with error		|
|-----------------------|---------------------------------------|
|sq_num_wrfe		| Number of CQEs with error		|
|-----------------------|---------------------------------------|
|sq_num_mwbe		| Number of Memory Window bind errors	|
|-----------------------|---------------------------------------|
|sq_num_bre		| Number of bad response errors		|
|-----------------------|---------------------------------------|
|sq_num_rire		| Number of Remote Invalid request	|
|			| errors				|
|-----------------------|---------------------------------------|
|rq_num_rire		| Number of Remote Invalid request	|
|			| errors				|
|-----------------------|---------------------------------------|
|sq_num_rae		| Number of remote access errors	|
|-----------------------|---------------------------------------|
|rq_num_rae		| Number of remote access errors	|
|-----------------------|---------------------------------------|
|sq_num_roe		| Number of remote operation errors	|
|-----------------------|---------------------------------------|
|sq_num_tree		| Number of transport retries exceeded	|
|			| errors				|
|-----------------------|---------------------------------------|
|sq_num_rree		| Number of RNR NAK retries exceeded	|
|			| errors				|
|-----------------------|---------------------------------------|
|rq_num_rnr		| Number of RNR NAKs sent		|
|-----------------------|---------------------------------------|
|sq_num_rnr		| Number of RNR NAKs received		|
|-----------------------|---------------------------------------|
|rq_num_oos		| Number of Out of Sequence requests	|
|			| received				|
|-----------------------|---------------------------------------|
|sq_num_oos		| Number of Out of Sequence NAKs	|
|			| received				|
|-----------------------|---------------------------------------|
|rq_num_udsdprd		| Number of UD packets silently		|
|			| discarded on the Receive Queue due to	|
|			| lack of receive descriptor		|
|-----------------------|---------------------------------------|
|rq_num_dup		| Number of duplicate requests received	|
|-----------------------|---------------------------------------|
|sq_num_to		| Number of time out received		|
|-----------------------|---------------------------------------|
|num_cqovf		| Number of CQ overflows		|
|-----------------------|---------------------------------------|

Signed-off-by: Mark Bloch 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

net/mlx4: Query performance and diagnostics counters

2016-08-04T01:03:34+00:00

Add a function to query diagnostics counters from the firmware.

Signed-off-by: Mark Bloch 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

net/mlx4: Add diagnostic counters capability bit

2016-08-04T01:03:33+00:00

Add a bit that indicates if the firmware supports per port
diagnostic counters.

Signed-off-by: Mark Bloch 
Signed-off-by: Leon Romanovsky 
Signed-off-by: Doug Ledford

net/mlx4_en: break out tx_desc write into separate function

2016-07-20T04:46:33+00:00

In preparation for writing the tx descriptor from multiple functions,
create a helper for both normal and blueflame access.

Signed-off-by: Brenden Blanco 
Signed-off-by: David S. Miller

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-06-30T09:03:36+00:00

Several cases of overlapping changes, except the packet scheduler
conflicts which deal with the addition of the free list parameter
to qdisc_enqueue().

Signed-off-by: David S. Miller

net/mlx4_en: Add DCB PFC support through CEE netlink commands

2016-06-23T19:18:50+00:00

This patch adds support for reading and updating priority flow
control (PFC) attributes in the driver via netlink.

Signed-off-by: Rana Shahout 
Signed-off-by: Eran Ben Elisha 
Signed-off-by: Eugenia Emantayev 
Signed-off-by: Tariq Toukan 
Signed-off-by: David S. Miller

net/mlx4_en: Avoid unregister_netdev at shutdown flow

2016-06-22T20:38:11+00:00

This allows a clean shutdown, even if some netdev clients do not
release their reference from this netdev. It is enough to release
the HW resources only as the kernel is shutting down.

Fixes: 2ba5fbd62b25 ('net/mlx4_core: Handle AER flow properly')
Signed-off-by: Eran Ben Elisha 
Signed-off-by: Tariq Toukan 
Signed-off-by: David S. Miller

net/mlx4: Avoid wrong virtual mappings

2016-05-06T03:23:05+00:00

The dma_alloc_coherent() function returns a virtual address which can
be used for coherent access to the underlying memory.  On some
architectures, like arm64, undefined behavior results if this memory is
also accessed via virtual mappings that are not coherent.  Because of
their undefined nature, operations like virt_to_page() return garbage
when passed virtual addresses obtained from dma_alloc_coherent().  Any
subsequent mappings via vmap() of the garbage page values are unusable
and result in bad things like bus errors (synchronous aborts in ARM64
speak).

The mlx4 driver contains code that does the equivalent of:
vmap(virt_to_page(dma_alloc_coherent)), this results in an OOPs when the
device is opened.

Prevent Ethernet driver to run this problematic code by forcing it to
allocate contiguous memory. As for the Infiniband driver, at first we
are trying to allocate contiguous memory, but in case of failure roll
back to work with fragmented memory.

Signed-off-by: Haggai Abramovsky 
Signed-off-by: Yishai Hadas 
Reported-by: David Daney 
Tested-by: Sinan Kaya 
Signed-off-by: David S. Miller

net/mlx4_core: Avoid repeated calls to pci enable/disable

2016-04-21T19:02:40+00:00

Maintain the PCI status and provide wrappers for enabling and disabling
the PCI device.  Performing the actions more than once without doing
its opposite results in warning logs.

This occurred when EEH hotplugged the device causing a warning for
disabling an already disabled device.

Fixes: 2ba5fbd62b25 ('net/mlx4_core: Handle AER flow properly')
Signed-off-by: Daniel Jurgens 
Signed-off-by: Yishai Hadas 
Signed-off-by: Or Gerlitz 
Signed-off-by: David S. Miller