platform/kernel/linux-starfive.git
5 years agoMerge branch 'write-handler-consistent-flow' into for-next
Doug Ledford [Mon, 3 Dec 2018 17:20:53 +0000 (12:20 -0500)]
Merge branch 'write-handler-consistent-flow' into for-next

Make all of the write() handlers use a consistent flow

From Jason,

This series unifies all the write handlers to use a flow that is very
similar to the ioctl handler flow, including having the same basic
assumptions about extensible buffer handling and the same handler
function call signature.

Along the way this consolidates all the copy_to/from_user into a small
set of safe buffer accessor functions tailored to the usage here. These
accessors use the new dispatcher-controlled calling convention for ucore
data, and support a placement of the response that does not rely on the
cmd.response value.

Overall this brings in in strong bounds checking to all the write()
handlers and consistent enforcement of the zero-fill/zero-check
methodology for buffer extension.

The end result is a significant complexity reduction for all of the
handlers and creates a high degree of uniformity between the write,
write_ex, and ioctl handlers and dispatch flow.

Thanks

Jason Gunthorpe (12):
  RDMA/uverbs: Remove out_len checks that are now done by the core
  RDMA/uverbs: Use uverbs_attr_bundle to pass ucore for write/write_ex
  RDMA/uverbs: Get rid of the 'callback' scheme in the compat path
  RDMA/uverbs: Use uverbs_response() for remaining response copying
  RDMA/uverbs: Use uverbs_request() for request copying
  RDMA/uverbs: Use uverbs_request() and core for write_ex handlers
  RDMA/uverbs: Fill in the response for IB_USER_VERBS_EX_CMD_MODIFY_QP
  RDMA/uverbs: Simplify ib_uverbs_ex_query_device
  RDMA/uverbs: Add a simple iterator interface for reading the command
  RDMA/uverbs: Use the iterator for ib_uverbs_unmarshall_recv()
  RDMA/uverbs: Do not check the input length on create_cq/qp paths
  RDMA/uverbs: Use only attrs for the write() handler signature

 drivers/infiniband/core/rdma_core.h   |    5 +-
 drivers/infiniband/core/uverbs_cmd.c  | 1165 ++++++++++---------------
 drivers/infiniband/core/uverbs_main.c |   23 +-
 drivers/infiniband/core/uverbs_uapi.c |   23 +-
 include/rdma/uverbs_ioctl.h           |    9 +-
 5 files changed, 479 insertions(+), 746 deletions(-)

Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Use only attrs for the write() handler signature
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:45 +0000 (20:58 +0200)]
RDMA/uverbs: Use only attrs for the write() handler signature

All of the old arguments can be derived from the uverbs_attr_bundle
structure, so get rid of the redundant arguments. Most of the prior work
has been removing users of the arguments to allow this to be a simple
patch.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Do not check the input length on create_cq/qp paths
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:44 +0000 (20:58 +0200)]
RDMA/uverbs: Do not check the input length on create_cq/qp paths

If the user did not provide a long enough command buffer then the missing
bytes are forced to zero. There is no reason to check the length if a zero
value is OK.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Use the iterator for ib_uverbs_unmarshall_recv()
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:43 +0000 (20:58 +0200)]
RDMA/uverbs: Use the iterator for ib_uverbs_unmarshall_recv()

This has a very complicated memory layout, with two flex arrays. Use
the iterator API to make reading it clearer.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Add a simple iterator interface for reading the command
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:42 +0000 (20:58 +0200)]
RDMA/uverbs: Add a simple iterator interface for reading the command

Several methods have a command with a trailing flex array, and they
all open code some extraction scheme. Centralize this into a simple
iterator API.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Simplify ib_uverbs_ex_query_device
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:41 +0000 (20:58 +0200)]
RDMA/uverbs: Simplify ib_uverbs_ex_query_device

We truncate the response structure if there is not enough room in the
user buffer so there is no reason to have all the mess with finely managing
response_length. Just fully fill the attrs and truncate on copy.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Fill in the response for IB_USER_VERBS_EX_CMD_MODIFY_QP
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:40 +0000 (20:58 +0200)]
RDMA/uverbs: Fill in the response for IB_USER_VERBS_EX_CMD_MODIFY_QP

A response struct was defined, and userspace is providing it (but not
checking it). Fill it in and write it out.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Use uverbs_request() and core for write_ex handlers
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:39 +0000 (20:58 +0200)]
RDMA/uverbs: Use uverbs_request() and core for write_ex handlers

The write_ex handlers have this horrible boilerplate in every function to
do the zero extend/zero check and min size checks. This is now handled in
the core code via the meta-data, and the zero checks are handled by
uverbs_request(). Replace all the occurrences.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Use uverbs_request() for request copying
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:38 +0000 (20:58 +0200)]
RDMA/uverbs: Use uverbs_request() for request copying

This function properly zero-extends, and zero-checks if the user
buffer is not the same size as the kernel command struct.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Use uverbs_response() for remaining response copying
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:37 +0000 (20:58 +0200)]
RDMA/uverbs: Use uverbs_response() for remaining response copying

This function properly truncates and zero-fills the response which is the
standard used by the ioctl uAPI when working with user data.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Get rid of the 'callback' scheme in the compat path
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:36 +0000 (20:58 +0200)]
RDMA/uverbs: Get rid of the 'callback' scheme in the compat path

There is no reason for this. For response processing we simply need to
copy, truncate, and zero fill the response into whatever output buffer
was provided. Add a function uverbs_response() that does this
consistently.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Use uverbs_attr_bundle to pass ucore for write/write_ex
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:35 +0000 (20:58 +0200)]
RDMA/uverbs: Use uverbs_attr_bundle to pass ucore for write/write_ex

This creates a consistent way to access the two core buffers across write
and write_ex handlers.

Remove the open coded ucore conversion in the write/ex compatibility
handlers.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/uverbs: Remove out_len checks that are now done by the core
Jason Gunthorpe [Sun, 25 Nov 2018 18:58:34 +0000 (20:58 +0200)]
RDMA/uverbs: Remove out_len checks that are now done by the core

write() methods must work with fixed sized structures as that is the only
way to know where the udata segment starts. The common udata code now
rejects any write() that has a response buffer shorter than the core's
response.

Thus all the checks of out_len for write methods are redundant and can be
removed.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoIB/mlx5: Use fragmented QP's buffer for in-kernel users
Guy Levi [Mon, 26 Nov 2018 06:15:50 +0000 (08:15 +0200)]
IB/mlx5: Use fragmented QP's buffer for in-kernel users

The current implementation of create QP requires contiguous memory, such a
requirement is problematic once the memory is fragmented or the system is
low in memory, it causes failures in dma_zalloc_coherent().

This patch takes advantage of the new mlx5_core API which allocates a
fragmented buffer. This makes the QP creation much more resilient to
memory fragmentation. Data-path code was adapted to the fact that WQEs can
cross buffers.

We also use the opportunity to fix some cosmetic legacy coding convention
errors which were in the feature scope.

Signed-off-by: Guy Levi <guyle@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/mlx5: Use fragmented SRQ's buffer for in-kernel users
Guy Levi [Mon, 26 Nov 2018 06:15:39 +0000 (08:15 +0200)]
IB/mlx5: Use fragmented SRQ's buffer for in-kernel users

The current implementation of create SRQ requires contiguous memory, such
a requirement is problematic once the memory is fragmented or the system
is low in memory, it causes failures in dma_zalloc_coherent().

This patch takes the advantage of the new mlx5_core API which allocates a
fragmented buffer, and makes the SRQ creation much more resilient to
memory fragmentation. Data-path code was adapted to the fact that WQEs can
cross buffers.

Signed-off-by: Guy Levi <guyle@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agorxe: IB_WR_REG_MR does not capture MR's iova field
Chuck Lever [Sun, 25 Nov 2018 22:13:08 +0000 (17:13 -0500)]
rxe: IB_WR_REG_MR does not capture MR's iova field

FRWR memory registration is done with a series of calls and WRs.
1. ULP invokes ib_dma_map_sg()
2. ULP invokes ib_map_mr_sg()
3. ULP posts an IB_WR_REG_MR on the Send queue

Step 2 generates an iova. It is permissible for ULPs to change this
iova (with certain restrictions) between steps 2 and 3.

rxe_map_mr_sg captures the MR's iova but later when rxe processes the
REG_MR WR, it ignores the MR's iova field. If a ULP alters the MR's iova
after step 2 but before step 3, rxe never captures that change.

When the remote sends an RDMA Read targeting that MR, rxe looks up the
R_key, but the altered iova does not match the iova stored in the MR,
causing the RDMA Read request to fail.

Reported-by: Anna Schumaker <schumaker.anna@gmail.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/mlx5: Attach a DEVX counter via raw flow creation
Mark Bloch [Tue, 20 Nov 2018 18:31:08 +0000 (20:31 +0200)]
RDMA/mlx5: Attach a DEVX counter via raw flow creation

Allow a user to attach a DEVX counter via mlx5 raw flow creation. In order
to attach a counter we introduce a new attribute:

MLX5_IB_ATTR_CREATE_FLOW_ARR_COUNTERS_DEVX

A counter can be attached to multiple flow steering rules.

Signed-off-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/qib: Remove all occurrences of BUG_ON()
Leon Romanovsky [Thu, 29 Nov 2018 12:15:28 +0000 (14:15 +0200)]
RDMA/qib: Remove all occurrences of BUG_ON()

QIB driver was added in 2010 with many BUG_ON(), most of them were cleaned
out after years of development and usages.

It looks like that it is safe now to remove rest of BUG_ONs.

Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/usnic: fix spelling mistake "miniumum" -> "minimum"
Colin Ian King [Thu, 29 Nov 2018 10:42:13 +0000 (10:42 +0000)]
IB/usnic: fix spelling mistake "miniumum" -> "minimum"

There is a spelling mistake in a usnic_err error message, fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/uverbs: fix ptr_ret.cocci warnings
kbuild test robot [Tue, 27 Nov 2018 23:21:30 +0000 (07:21 +0800)]
RDMA/uverbs: fix ptr_ret.cocci warnings

drivers/infiniband/core/uverbs_cmd.c:1095:1-3: WARNING: PTR_ERR_OR_ZERO can be used

 Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR

Generated by: scripts/coccinelle/api/ptr_ret.cocci

Fixes: 7106a9769715 ("RDMA/uverbs: Make write() handlers return 0 on success")
Signed-off-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/drivers: Fix spelling mistake "initalize" -> "initialize"
Colin Ian King [Wed, 28 Nov 2018 15:11:16 +0000 (15:11 +0000)]
RDMA/drivers: Fix spelling mistake "initalize" -> "initialize"

Fix spelling mistake in usnic_err error message

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/uverbs: Use uverbs_attr_bundle to pass udata for ioctl()
Jason Gunthorpe [Sun, 25 Nov 2018 18:51:20 +0000 (20:51 +0200)]
RDMA/uverbs: Use uverbs_attr_bundle to pass udata for ioctl()

Have the core code initialize the driver_udata if the method has a udata
description. This is done using the same create_udata the handler was
supposed to call.

This makes ioctl consistent with the write and write_ex paths.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Use uverbs_attr_bundle to pass udata for write
Jason Gunthorpe [Sun, 25 Nov 2018 18:51:19 +0000 (20:51 +0200)]
RDMA/uverbs: Use uverbs_attr_bundle to pass udata for write

Now that we have metadata describing the command format the core code can
directly compute the udata pointers and all the really ugly
ib_uverbs_init_udata() calls can be removed from the handlers.

This means all the write() handlers are no longer sensitive to the layout
of the command buffer.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Use uverbs_attr_bundle to pass udata for write_ex
Jason Gunthorpe [Sun, 25 Nov 2018 18:51:18 +0000 (20:51 +0200)]
RDMA/uverbs: Use uverbs_attr_bundle to pass udata for write_ex

The core code needs to compute the udata so we may as well pass it in the
uverbs_attr_bundle instead of on the stack. This converts the simple case
of write_ex() which already has a core calculation.

Also change the write() path to use the attrs for ib_uverbs_init_udata()
instead of on the stack. This lets the write to write_ex compatibility
path continue to follow the lead of the _ex path.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Prohibit write() calls with too small buffers
Jason Gunthorpe [Sun, 25 Nov 2018 18:51:17 +0000 (20:51 +0200)]
RDMA/uverbs: Prohibit write() calls with too small buffers

The size meta-data in the prior patch describes the smallest acceptable
buffer for the write() interface. Globally check this in the core code.

This is necessary in the case of write() methods that have a driver udata
to prevent computing a negative udata buffer length.

The return code of -ENOSPC is chosen here as some of the handlers already
use this code, however many other handler use EINVAL.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Add structure size info to write commands
Jason Gunthorpe [Sun, 25 Nov 2018 18:51:16 +0000 (20:51 +0200)]
RDMA/uverbs: Add structure size info to write commands

We need the structure sizes to compute the location of the udata in the
core code. Annotate the sizes into the new macro language.

This is generated largely by script and checked by comparing against the
similar list in rdma-core.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Do not pass ib_uverbs_file to ioctl methods
Jason Gunthorpe [Sun, 25 Nov 2018 18:51:15 +0000 (20:51 +0200)]
RDMA/uverbs: Do not pass ib_uverbs_file to ioctl methods

The uverbs_attr_bundle already contains this pointer, and most methods
don't actually need it. Get rid of the redundant function argument.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Make write() handlers return 0 on success
Jason Gunthorpe [Sun, 25 Nov 2018 18:51:14 +0000 (20:51 +0200)]
RDMA/uverbs: Make write() handlers return 0 on success

Currently they return the command length, while all other handlers return
0. This makes the write path closer to the write_ex and ioctl path.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Replace ib_uverbs_file with uverbs_attr_bundle for write
Jason Gunthorpe [Sun, 25 Nov 2018 18:51:13 +0000 (20:51 +0200)]
RDMA/uverbs: Replace ib_uverbs_file with uverbs_attr_bundle for write

Now that we can add meta-data to the description of write() methods we
need to pass the uverbs_attr_bundle into all write based handlers so
future patches can use it as a container for any new data transferred out
of the core.

This is the first step to bringing the write() and ioctl() methods to a
common interface signature.

This is a simple search/replace, and we push the attr down into the uobj
and other APIs to keep changes minimal.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Add missing driver_data
Jason Gunthorpe [Sun, 25 Nov 2018 18:51:12 +0000 (20:51 +0200)]
RDMA/uverbs: Add missing driver_data

If the struct is used with a driver_udata it should have a trailing
driver_data flex array to mark it as having udata.

In most cases this forces the end of the struct to be aligned to u64 which
is needed to make the trailing driver_data naturally aligned.

Unfortunately We have a few cases where the base struct is not aligned to
8 bytes, these are marked with a u32 driver_data and userspace will check
for alignment issues when it compiles the driver.

Also remove the empty ib_uverbs_modify_qp_resp as nothing uses this.

pahole says there is no change to any struct sizes by this change.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoIB/qib: fix spelling mistake "colescing" -> "coalescing"
Colin Ian King [Mon, 26 Nov 2018 16:23:20 +0000 (16:23 +0000)]
IB/qib: fix spelling mistake "colescing" -> "coalescing"

There is a spelling mistake in the module description text, fix it.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/core: Sync unregistration with netlink commands
Parav Pandit [Fri, 16 Nov 2018 01:50:57 +0000 (03:50 +0200)]
RDMA/core: Sync unregistration with netlink commands

When the rdma device is getting removed, get resource info can race with
device removal, as below:

      CPU-0                                  CPU-1
    --------                               --------
    rdma_nl_rcv_msg()
       nldev_res_get_cq_dumpit()
          mutex_lock(device_lock);
          get device reference
          mutex_unlock(device_lock);        [..]
                                            ib_unregister_device()
                                            /* Valid reference to
                                             * device->dev exists.
                                             */
                                             ib_dealloc_device()

          [..]
          provider->fill_res_entry();

Even though device object is not freed, fill_res_entry() can get called on
device which doesn't have a driver anymore. Kernel core device reference
count is not sufficient, as this only keeps the structure valid, and
doesn't guarantee the driver is still loaded.

Similar race can occur with device renaming and device removal, where
device_rename() tries to rename a unregistered device. While this is fine
for devices of a class which are not net namespace aware, but it is
incorrect for net namespace aware class coming in subsequent series.  If a
class is net namespace aware, then the below [1] call trace is observed in
above situation.

Therefore, to avoid the race, keep a reference count and let device
unregistration wait until all netlink users drop the reference.

[1] Call trace:
kernfs: ns required in 'infiniband' for 'mlx5_0'
WARNING: CPU: 18 PID: 44270 at fs/kernfs/dir.c:842 kernfs_find_ns+0x104/0x120
libahci i2c_core mlxfw libata dca [last unloaded: devlink]
RIP: 0010:kernfs_find_ns+0x104/0x120
Call Trace:
kernfs_find_and_get_ns+0x2e/0x50
sysfs_rename_link_ns+0x40/0xb0
device_rename+0xb2/0xf0
ib_device_rename+0xb3/0x100 [ib_core]
nldev_set_doit+0x165/0x190 [ib_core]
rdma_nl_rcv_msg+0x249/0x250 [ib_core]
? netlink_deliver_tap+0x8f/0x3e0
rdma_nl_rcv+0xd6/0x120 [ib_core]
netlink_unicast+0x17c/0x230
netlink_sendmsg+0x2f0/0x3e0
sock_sendmsg+0x30/0x40
__sys_sendto+0xdc/0x160

Fixes: da5c85078215 ("RDMA/nldev: add driver-specific resource tracking")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/cma: Move cma module specific functions to cma_priv.h
Parav Pandit [Mon, 12 Nov 2018 22:45:24 +0000 (00:45 +0200)]
RDMA/cma: Move cma module specific functions to cma_priv.h

Currently several rdma_cm module specific functions are declared in
core_priv.h file. Now that we have cma_priv.h file specific to rdma_cm
kernel module, move them from core_priv.h to cma_priv.h

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/uverbs: Check for NULL driver methods for every write call
Jason Gunthorpe [Mon, 12 Nov 2018 20:59:58 +0000 (22:59 +0200)]
RDMA/uverbs: Check for NULL driver methods for every write call

Add annotations to the uverbs_api structure indicating which driver
methods are called by the implementation. If the required method
is NULL the write API will be not be callable.

This effectively duplicates the cmd_mask system, however it does it by
expressing invariants required by the core code, not by delegating
decision making to the driver. This is another step toward eliminating
cmd_mask.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Make all the method functions in uverbs_cmd static
Jason Gunthorpe [Mon, 12 Nov 2018 20:59:57 +0000 (22:59 +0200)]
RDMA/uverbs: Make all the method functions in uverbs_cmd static

Now that we use struct uverbs_uapi to link the method functions to the
dispatcher there is no reason to have them be extern symbols.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Convert the write interface to use uverbs_api
Jason Gunthorpe [Mon, 12 Nov 2018 20:59:56 +0000 (22:59 +0200)]
RDMA/uverbs: Convert the write interface to use uverbs_api

This organizes the write commands into objects and links them to the
uverbs_api data structure. The command path is reworked to use uapi
instead of its internal structures.

The command mask is moved from a runtime check to a registration time
check in the uapi.

Since the write interface does not have the object ID as part of the
command, the radix bins are converted into linear lists to support the
lookup.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/verbs: Store the write/write_ex uapi entry points in the uverbs_api
Jason Gunthorpe [Mon, 12 Nov 2018 20:59:55 +0000 (22:59 +0200)]
RDMA/verbs: Store the write/write_ex uapi entry points in the uverbs_api

Bringing all uapi entry points into one place lets us deal with them
consistently. For instance the write, write_ex and ioctl paths can be
disabled when an API is not supported by the driver.

This will replace the uverbs_cmd_table static arrays.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Require all objects to have a driver destroy function
Jason Gunthorpe [Mon, 12 Nov 2018 20:59:54 +0000 (22:59 +0200)]
RDMA/uverbs: Require all objects to have a driver destroy function

If we can't destroy the object then we certainly shouldn't allow it be
created or used. Remove it from the uverbs_uapi in this case.

This also disables methods of other objects that have mandatory object
handle inputs - ie REG_DM_MR is now automatically removed if DM objects
cannot be created.

Typically drivers not supporting an interface will mark all of the
supporting functions as NULL, including destroy.

This is intended to automatically eliminate entire corner cases in the API
that are difficult to test.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/mlx5: Use the uapi disablement APIs instead of code
Jason Gunthorpe [Mon, 12 Nov 2018 20:59:53 +0000 (22:59 +0200)]
RDMA/mlx5: Use the uapi disablement APIs instead of code

Rely on UAPI_DEF_IS_OBJ_SUPPORTED instead of manipulating the contents of
the driver's definition list.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Add helpers to mark uapi functions as unsupported
Jason Gunthorpe [Mon, 12 Nov 2018 20:59:52 +0000 (22:59 +0200)]
RDMA/uverbs: Add helpers to mark uapi functions as unsupported

We have many cases where parts of the uapi are not supported in a driver,
needs a certain protocol, or whatever. It is best to reflect this directly
into the struct uverbs_api when it is built so that everything is simply
blocked off, and future introspection can report a proper supported list.

This is done by adding some additional helpers to the definition list
language that disable objects based on a 'supported' call back, and a
helper that disables based on a NULL struct ib_device function pointer.

Disablement is global. For instance, if a driver disables an object then
everything connected to that object is removed, including core methods.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Factor out the add/get pattern into a helper
Jason Gunthorpe [Mon, 12 Nov 2018 20:59:51 +0000 (22:59 +0200)]
RDMA/uverbs: Factor out the add/get pattern into a helper

The next patch needs another copy of this, provide a simple helper to
reduce the coding. uapi_add_get_elm() returns an existing entry or adds a
new one.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/uverbs: Use a linear list to describe the compiled-in uapi
Jason Gunthorpe [Mon, 12 Nov 2018 20:59:50 +0000 (22:59 +0200)]
RDMA/uverbs: Use a linear list to describe the compiled-in uapi

The 'tree' data structure is very hard to build at compile time, and this
makes it very limited. The new radix tree based compiler can handle a more
complex input language that does not require the compiler to perfectly
group everything into a neat tree structure.

Instead use a simple list to describe to input, where the list elements
can be of various different 'opcodes' instructing the radix compiler what
to do. Start out with opcodes chaining to other definition lists and
chaining to the existing 'tree' definition.

Replace the very top level of the 'object tree' with this list type and
get rid of struct uverbs_object_tree_def and DECLARE_UVERBS_OBJECT_TREE.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoRDMA/mlx5: Do not generate the uabi specs unconditionally
Jason Gunthorpe [Mon, 12 Nov 2018 20:59:49 +0000 (22:59 +0200)]
RDMA/mlx5: Do not generate the uabi specs unconditionally

For DM there is no reason not to add the spec for the START_OFFSET, if DM
is not supported then ib_dev.alloc_dm is already set to NULL which ensures
we do not call the method.

For IPSEC, the core code should be setting ib_dev.create_flow_action_esp
to NULL to disable it, not relying on wonky manipulation of the specs.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agomlx4: trigger IB events needed by SMC
Ursula Braun [Mon, 12 Nov 2018 11:41:55 +0000 (12:41 +0100)]
mlx4: trigger IB events needed by SMC

The mlx4 driver does not trigger an IB_EVENT_PORT_ACTIVE when the RoCE
network interface is activated. When SMC determines the RoCE device port
to be used, it checks the port states. This patch triggers IB events for
NETDEV_UP and NETDEV_DOWN.

Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoiw_cxgb4: only reconnect with MPAv1 if the peer aborts
Steve Wise [Sat, 10 Nov 2018 13:27:39 +0000 (05:27 -0800)]
iw_cxgb4: only reconnect with MPAv1 if the peer aborts

Only retry connection setup with MPAv1 if the peer actually aborted the
connection upon receiving the MPAv2 start message.  This avoids retrying
with MPAv1 in the case where the connection was aborted due to retransmit
timeouts.

Fixes: d2fe99e86bb2 ("RDMA/cxgb4: Add support for MPAv2 Enhanced RDMA Negotiation")
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/core: Make function ib_fmr_pool_unmap return void
Yuval Shaia [Wed, 21 Nov 2018 11:47:02 +0000 (13:47 +0200)]
IB/core: Make function ib_fmr_pool_unmap return void

Since the function always returns 0 make it void.

Reported-by: HÃ¥kon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Yuval Shaia <yuval.shaia@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Acked-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/srpt: Drop pointless static qualifier in srpt_make_tpg()
Yue Haibing [Thu, 15 Nov 2018 10:55:00 +0000 (10:55 +0000)]
IB/srpt: Drop pointless static qualifier in srpt_make_tpg()

There is no need to have the 'struct se_portal_group *tpg' variable static
since new value always be assigned before use.

Signed-off-by: Yue Haibing <yuehaibing@huawei.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/core: Remove unused header files mm.h, socket.h, scatterlist.h
Parav Pandit [Thu, 15 Nov 2018 02:03:35 +0000 (04:03 +0200)]
RDMA/core: Remove unused header files mm.h, socket.h, scatterlist.h

Structures of ib_verbs.h don't use fields/structures of mm.h, socket.h or
scatterlist.h.  So remove such header files inclusion.

Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoinfiniband/hw/cxgb4/qp.c: Use dma_zalloc_coherent
Sabyasachi Gupta [Mon, 12 Nov 2018 15:21:59 +0000 (20:51 +0530)]
infiniband/hw/cxgb4/qp.c: Use dma_zalloc_coherent

Replaced dma_alloc_coherent + memset with dma_zalloc_coherent

Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoinfiniband/hw/cxgb3/cxio_hal.c: Use dma_zalloc_coherent
Sabyasachi Gupta [Fri, 9 Nov 2018 16:50:29 +0000 (22:20 +0530)]
infiniband/hw/cxgb3/cxio_hal.c: Use dma_zalloc_coherent

Replaced dma_alloc_coherent + memset with dma_zalloc_coherent

Signed-off-by: Sabyasachi Gupta <sabyasachi.linux@gmail.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoMerge branch 'mlx5-next' into rdma.git
Jason Gunthorpe [Wed, 21 Nov 2018 21:29:40 +0000 (14:29 -0700)]
Merge branch 'mlx5-next' into rdma.git

From git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux

mlx5 updates taken for dependencies on later ODP patches.

Conflict resolved by deleting mlx5_ib_get_vector_affinity()

* branch 'mlx5-next': (21 commits)
  net/mlx5: EQ, Make EQE access methods inline
  {net,IB}/mlx5: Move Page fault EQ and ODP logic to RDMA
  net/mlx5: EQ, Generic EQ
  net/mlx5: EQ, Different EQ types
  net/mlx5: EQ, Privatize eq_table and friends
  net/mlx5: EQ, irq_info and rmap belong to eq_table
  net/mlx5: EQ, Create all EQs in one place
  net/mlx5: EQ, Move all EQ logic to eq.c
  net/mlx5: EQ, Remove redundant completion EQ list lock
  net/mlx5: EQ, No need to store eq index as a field
  net/mlx5: EQ, Remove unused fields and structures
  net/mlx5: EQ, Use the right place to store/read IRQ affinity hint
  IB/mlx5: Improve ODP debugging messages
  net/mlx5: Use multi threaded workqueue for page fault handling
  net/mlx5: Return success for PAGE_FAULT_RESUME in internal error state
  IB/mlx5: Lock QP during page fault handling
  net/mlx5: Enumerate page fault types
  net/mlx5: Add interface to hold and release core resources
  net/mlx5: Release resource on error flow
  net/mlx5: Fix offsets of ifc reserved fields
  ...

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/mlx5: Allow modify AV in DCI QP to RTR
Artemy Kovalyov [Mon, 5 Nov 2018 06:12:07 +0000 (08:12 +0200)]
IB/mlx5: Allow modify AV in DCI QP to RTR

This is required so the user can set the SL on the DC QP.

Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Reviewed-by: Yossi Itigin <yosefe@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agonet/mlx5: EQ, Make EQE access methods inline
Saeed Mahameed [Mon, 19 Nov 2018 18:52:42 +0000 (10:52 -0800)]
net/mlx5: EQ, Make EQE access methods inline

These are one/two liner generic EQ access methods, better have them
declared static inline in eq.h.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years ago{net,IB}/mlx5: Move Page fault EQ and ODP logic to RDMA
Saeed Mahameed [Mon, 19 Nov 2018 18:52:41 +0000 (10:52 -0800)]
{net,IB}/mlx5: Move Page fault EQ and ODP logic to RDMA

Use the new generic EQ API to move all ODP RDMA data structures and logic
form mlx5 core driver into mlx5_ib driver.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Acked-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: EQ, Generic EQ
Saeed Mahameed [Mon, 19 Nov 2018 18:52:40 +0000 (10:52 -0800)]
net/mlx5: EQ, Generic EQ

Add mlx5_eq_{create/destroy}_generic APIs and EQE access methods, for
mlx5 core consumers generic EQs.

This API will be used in downstream patch to move page fault (RDMA ODP)
EQ logic into mlx5_ib rdma driver, hence it will use a generic EQ.

Current mlx5 EQ allocation scheme:
On load mlx5 allocates 4 (for async) + #cores (for data completions)
MSIX vectors, mlx5 core will assign 3 MSIX vectors for internal async
EQs and will use all of the #cores MSIX vectors for completion EQs,
(One vector is going to be reserved for a generic EQ).

After this patch an external user (e.g mlx5_ib) of mlx5_core
can use this new API to create new generic EQs with the reserved msix
vector index for that eq.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: EQ, Different EQ types
Saeed Mahameed [Mon, 19 Nov 2018 18:52:39 +0000 (10:52 -0800)]
net/mlx5: EQ, Different EQ types

In mlx5 we have three types of usages for EQs,
1. Asynchronous EQs, used internally by mlx5 core for
 a. FW command completions
 b. FW page requests
 c. one EQ for all other Asynchronous events

2. Completion EQs, used for CQ completion (we create one per core)

3. *Special type of EQ (page fault) used for RDMA on demand paging
(ODP).

*The 3rd type shouldn't be special at least in mlx5 core, it is yet
another async events EQ with specific use case, it will be removed in
the next two patches, and will completely move its logic to mlx5_ib,
as it is rdma specific.

In this patch we remove use case (eq type) specific fields from
struct mlx5_eq into a new eq type specific structures.

struct mlx5_eq_async;
truct mlx5_eq_comp;
struct mlx5_eq_pagefault;

Separate between their type specific flows.

In the future we will allow users to create there own generic EQs.
for now we will allow only one for ODP in next patches.

We will introduce event listeners registration API for those who
want to receive mlx5 async events.
After that mlx5 eq handling will be clean from feature/user specific
handling.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: EQ, Privatize eq_table and friends
Saeed Mahameed [Mon, 19 Nov 2018 18:52:38 +0000 (10:52 -0800)]
net/mlx5: EQ, Privatize eq_table and friends

Move unnecessary EQ table structures and declaration from the
public include/linux/mlx5/driver.h into the private area of mlx5_core
and into eq.c/eq.h.

Introduce new mlx5 EQ APIs:

mlx5_comp_vectors_count(dev);
mlx5_comp_irq_get_affinity_mask(dev, vector);

And use them from mlx5_ib or mlx5e netdevice instead of direct access to
mlx5_core internal structures.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: EQ, irq_info and rmap belong to eq_table
Saeed Mahameed [Mon, 19 Nov 2018 18:52:37 +0000 (10:52 -0800)]
net/mlx5: EQ, irq_info and rmap belong to eq_table

irq_info and rmap are EQ properties of the driver, and only needed for
EQ objects, move them to the eq_table EQs database structure.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: EQ, Create all EQs in one place
Saeed Mahameed [Mon, 19 Nov 2018 18:52:36 +0000 (10:52 -0800)]
net/mlx5: EQ, Create all EQs in one place

Instead of creating the EQ table in three steps at driver load,
 - allocate irq vectors
 - allocate async EQs
 - allocate completion EQs
Gather all of the procedures into one function in eq.c and call it from
driver load.

This will help us reduce the EQ and EQ table private structures
visibility to eq.c in downstream refactoring.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: EQ, Move all EQ logic to eq.c
Saeed Mahameed [Mon, 19 Nov 2018 18:52:35 +0000 (10:52 -0800)]
net/mlx5: EQ, Move all EQ logic to eq.c

Move completion EQs flows from main.c to eq.c, reasons:
1) It is where this logic belongs.
2) It will help centralize the EQ logic in one file for downstream
refactoring, and future extensions/updates.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: EQ, Remove redundant completion EQ list lock
Saeed Mahameed [Mon, 19 Nov 2018 18:52:34 +0000 (10:52 -0800)]
net/mlx5: EQ, Remove redundant completion EQ list lock

Completion EQs list is only modified on driver load/unload, locking is
not required, remove it.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: EQ, No need to store eq index as a field
Saeed Mahameed [Mon, 19 Nov 2018 18:52:33 +0000 (10:52 -0800)]
net/mlx5: EQ, No need to store eq index as a field

eq->index is used only for completion EQs and is assigned to be
the completion eq index, it is used only when traversing the completion
eqs list, and it can be calculated dynamically, thus remove the
eq->index field.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: EQ, Remove unused fields and structures
Saeed Mahameed [Mon, 19 Nov 2018 18:52:32 +0000 (10:52 -0800)]
net/mlx5: EQ, Remove unused fields and structures

Some fields and structures are not referenced nor used by the driver,
remove them.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: EQ, Use the right place to store/read IRQ affinity hint
Saeed Mahameed [Mon, 19 Nov 2018 18:52:31 +0000 (10:52 -0800)]
net/mlx5: EQ, Use the right place to store/read IRQ affinity hint

Currently the cpu affinity hint mask for completion EQs is stored and
read from the wrong place, since reading and storing is done from the
same index, there is no actual issue with that, but internal irq_info
for completion EQs stars at MLX5_EQ_VEC_COMP_BASE offset in irq_info
array, this patch changes the code to use the correct offset to store
and read the IRQ affinity hint.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoIB/mlx5: Improve ODP debugging messages
Moni Shoua [Thu, 8 Nov 2018 19:10:17 +0000 (21:10 +0200)]
IB/mlx5: Improve ODP debugging messages

Add and modify debug messages to ODP related error flows.
In that context, return code EAGAIN is considered less severe and print
level for it is set debug instead of warn.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: Use multi threaded workqueue for page fault handling
Moni Shoua [Thu, 8 Nov 2018 19:10:14 +0000 (21:10 +0200)]
net/mlx5: Use multi threaded workqueue for page fault handling

Page fault events are processed in a workqueue context. Since each QP
can have up to two concurrent unrelated page-faults, one for requester
and one for responder, page-fault handling can be done in parallel.
Achieve this by changing the workqueue to be multi-threaded.
The number of threads is the same as the number of command interface
channels to avoid command interface bottlenecks.

In addition to multi-threads, change the workqueue flags to give it high
priority.

Stress benchmark shows that before this change 85% of page faults were
waiting in queue 8 seconds or more while after the change 98% of page
faults were waiting in queue 64 milliseconds or less. The number of threads
was chosen as the number of channels to the command interface.

Fixes: d9aaed838765 ("{net,IB}/mlx5: Refactor page fault handling")
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: Return success for PAGE_FAULT_RESUME in internal error state
Moni Shoua [Thu, 8 Nov 2018 19:10:13 +0000 (21:10 +0200)]
net/mlx5: Return success for PAGE_FAULT_RESUME in internal error state

When the device is in internal error state, command interface isn't
accessible and the driver decides which commands to fail and which to
pass.
Move the PAGE_FAULT_RESUME command to the pass list in order to avoid
redundant failure messages.

Fixes: 89d44f0a6c73 ("net/mlx5_core: Add pci error handlers to mlx5_core driver")
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoIB/mlx5: Lock QP during page fault handling
Moni Shoua [Thu, 8 Nov 2018 19:10:12 +0000 (21:10 +0200)]
IB/mlx5: Lock QP during page fault handling

When page fault event for a WQE arrives, the event data contains the
resource (e.g. QP) number which will later be used by the page fault
handler to retrieve the resource. Meanwhile, another context can destroy
the resource and cause use-after-free. To avoid that, take a reference on the
resource when handler starts and release it when it ends.

Page fault events for RDMA operations don't need to be protected because
the driver doesn't need to access the QP in the page fault handler.

Fixes: d9aaed838765 ("{net,IB}/mlx5: Refactor page fault handling")
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: Enumerate page fault types
Moni Shoua [Thu, 8 Nov 2018 19:10:11 +0000 (21:10 +0200)]
net/mlx5: Enumerate page fault types

Give meaningful names to type of WQE page faults.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: Add interface to hold and release core resources
Moni Shoua [Thu, 8 Nov 2018 19:10:10 +0000 (21:10 +0200)]
net/mlx5: Add interface to hold and release core resources

Sometimes upper layers may want to prevent the destruction of a core
resource for a period of time while work on that resource is in
progress.  Add API to support this.

Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: Release resource on error flow
Moni Shoua [Thu, 8 Nov 2018 19:10:08 +0000 (21:10 +0200)]
net/mlx5: Release resource on error flow

Fix reference counting leakage when the event handler aborts due to an
unsupported event for the resource type.

Fixes: a14c2d4beee5 ("net/mlx5_core: Warn on unsupported events of QP/RQ/SQ")
Signed-off-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agonet/mlx5: Fix offsets of ifc reserved fields
Gal Pressman [Wed, 7 Nov 2018 18:31:37 +0000 (20:31 +0200)]
net/mlx5: Fix offsets of ifc reserved fields

Fix wrong offsets of reserved fields in ifc file.
Issues found using pahole.

Signed-off-by: Gal Pressman <pressmangal@gmail.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
5 years agoIB/rxe: make rxe_unregister_device void
Zhu Yanjun [Sat, 3 Nov 2018 12:13:19 +0000 (08:13 -0400)]
IB/rxe: make rxe_unregister_device void

Since the function rxe_unregister_device always returns 0, it is changed
to void.

Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoIB/rxe: move the variable into the function that uses it
Zhu Yanjun [Sat, 3 Nov 2018 12:13:18 +0000 (08:13 -0400)]
IB/rxe: move the variable into the function that uses it

The variable rxe is only used in the function rxe_xmit_packet, and the
caller functions do not use it. So move this variable into the function
rxe_xmit_packet.

Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/rxe: Add link_down, rdma_sends, rdma_recvs stats counters
Andrew Boyer [Thu, 1 Nov 2018 13:18:46 +0000 (09:18 -0400)]
RDMA/rxe: Add link_down, rdma_sends, rdma_recvs stats counters

link_down is self-explanatory.

rdma_sends and rdma_recvs count the number of RDMA Send and RDMA Receive
operations completed successfully. This is different from the existing
sent_pkts and rcvd_pkts counters because the existing counters measure
packets, not RDMA operations.

ack_deffered is renamed to ack_deferred to fix the spelling.

out_of_sequence is renamed to out_of_seq_request to make clear that it is
counting only requests and not other packets which can be out of sequence.

Signed-off-by: Andrew Boyer <andrew.boyer@dell.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agoRDMA/rxe: Distinguish between down links and disabled links
Andrew Boyer [Thu, 1 Nov 2018 13:18:45 +0000 (09:18 -0400)]
RDMA/rxe: Distinguish between down links and disabled links

In ib_query_port(), use the netdev's IFF_UP flag to determine phys_state
(flag set = down = POLLING, flag clear = disabled = DISABLED).

Callers can then use the phys_state field to distinguish between links
which have a dead partner, cable missing, etc., from links which are
turned off on the local node. This is useful for HA and supportability.

Signed-off-by: Andrew Boyer <andrew.boyer@dell.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoi40iw: remove support for ib_get_vector_affinity
Sagi Grimberg [Thu, 1 Nov 2018 20:08:07 +0000 (13:08 -0700)]
i40iw: remove support for ib_get_vector_affinity

Devices that does not use managed affinity can not export a vector
affinity as the consumer relies on having a static mapping it can map to
upper layer affinity (e.g. sw queues). If the driver allows the user to
set the device irq affinity, then the affinitization of a long term
existing entites is not relevant.

For example, nvme-rdma controllers queue-irq affinitization is determined
at init time so if the irq affinity changes over time, we are no longer
aligned.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agomlx5: remove support for ib_get_vector_affinity
Sagi Grimberg [Thu, 1 Nov 2018 16:13:12 +0000 (09:13 -0700)]
mlx5: remove support for ib_get_vector_affinity

Devices that does not use managed affinity can not export a vector
affinity as the consumer relies on having a static mapping it can map to
upper layer affinity (e.g. sw queues). If the driver allows the user to
set the device irq affinity, then the affinitization of a long term
existing entites is not relevant.

For example, nvme-rdma controllers queue-irq affinitization is determined
at init time so if the irq affinity changes over time, we are no longer
aligned.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
5 years agonet/mlx5: Fix XRC SRQ umem valid bits
Yishai Hadas [Wed, 31 Oct 2018 10:20:28 +0000 (12:20 +0200)]
net/mlx5: Fix XRC SRQ umem valid bits

Adapt XRC SRQ to the latest HW specification with fixed definition
around umem valid bits. The previous definition relied on a bit which
was taken for other purposes in legacy FW.

Fixes: bd37197554eb ("net/mlx5: Update mlx5_ifc with DEVX UID bits")
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
5 years agoIB/uverbs: fix a typo
Rami Rosen [Sun, 28 Oct 2018 19:04:00 +0000 (21:04 +0200)]
IB/uverbs: fix a typo

This patch fixes a typo in include/rdma/ib_verbs.h.
See: https://www.merriam-webster.com/dictionary/lieu

Signed-off-by: Rami Rosen <ramirose@gmail.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agorxe: fix error completion wr_id and qp_num
Sagi Grimberg [Thu, 25 Oct 2018 19:40:57 +0000 (12:40 -0700)]
rxe: fix error completion wr_id and qp_num

Error completions must still contain a valid wr_id and
qp_num such that the consumer can rely on. Correctly
fill these fields in receive error completions.

Reported-by: Walker Benjamin <benjamin.walker@intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Tested-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoIB/rxe: clean skb queue directly
Zhu Yanjun [Fri, 19 Oct 2018 08:53:00 +0000 (04:53 -0400)]
IB/rxe: clean skb queue directly

When resp is in error state, the queued SKBs will not be handled.
The function get_req cleans up the skb queue directly.

CC: Srinivas Eeda <srinivas.eeda@oracle.com>
CC: Junxiao Bi <junxiao.bi@oracle.com>
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
5 years agoRDMA/hns: prefer dma_zalloc_coherent to dma_alloc_coherent/memse
Allen Pais [Mon, 22 Oct 2018 14:00:43 +0000 (19:30 +0530)]
RDMA/hns: prefer dma_zalloc_coherent to dma_alloc_coherent/memse

This is a mechanical transformation, no change in logic.

Signed-off-by: Allen Pais <allen.lkml@gmail.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
6 years agoLinux 4.20-rc1
Linus Torvalds [Sun, 4 Nov 2018 23:37:52 +0000 (15:37 -0800)]
Linux 4.20-rc1

6 years agoMerge tag 'tags/upstream-4.20-rc1' of git://git.infradead.org/linux-ubifs
Linus Torvalds [Sun, 4 Nov 2018 22:46:04 +0000 (14:46 -0800)]
Merge tag 'tags/upstream-4.20-rc1' of git://git.infradead.org/linux-ubifs

Pull UBIFS updates from Richard Weinberger:

 - Full filesystem authentication feature, UBIFS is now able to have the
   whole filesystem structure authenticated plus user data encrypted and
   authenticated.

 - Minor cleanups

* tag 'tags/upstream-4.20-rc1' of git://git.infradead.org/linux-ubifs: (26 commits)
  ubifs: Remove unneeded semicolon
  Documentation: ubifs: Add authentication whitepaper
  ubifs: Enable authentication support
  ubifs: Do not update inode size in-place in authenticated mode
  ubifs: Add hashes and HMACs to default filesystem
  ubifs: authentication: Authenticate super block node
  ubifs: Create hash for default LPT
  ubfis: authentication: Authenticate master node
  ubifs: authentication: Authenticate LPT
  ubifs: Authenticate replayed journal
  ubifs: Add auth nodes to garbage collector journal head
  ubifs: Add authentication nodes to journal
  ubifs: authentication: Add hashes to index nodes
  ubifs: Add hashes to the tree node cache
  ubifs: Create functions to embed a HMAC in a node
  ubifs: Add helper functions for authentication support
  ubifs: Add separate functions to init/crc a node
  ubifs: Format changes for authentication support
  ubifs: Store read superblock node
  ubifs: Drop write_node
  ...

6 years agoMerge tag 'nfs-for-4.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Sun, 4 Nov 2018 16:20:09 +0000 (08:20 -0800)]
Merge tag 'nfs-for-4.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

Pull NFS client bugfixes from Trond Myklebust:
 "Highlights include:

  Bugfix:
   - Fix build issues on architectures that don't provide 64-bit cmpxchg

  Cleanups:
   - Fix a spelling mistake"

* tag 'nfs-for-4.20-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFS: fix spelling mistake, EACCESS -> EACCES
  SUNRPC: Use atomic(64)_t for seq_send(64)

6 years agoMerge branch 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 4 Nov 2018 16:15:15 +0000 (08:15 -0800)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull more timer updates from Thomas Gleixner:
 "A set of commits for the new C-SKY architecture timers"

* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  dt-bindings: timer: gx6605s SOC timer
  clocksource/drivers/c-sky: Add gx6605s SOC system timer
  dt-bindings: timer: C-SKY Multi-processor timer
  clocksource/drivers/c-sky: Add C-SKY SMP timer

6 years agoMerge tag 'ntb-4.20' of git://github.com/jonmason/ntb
Linus Torvalds [Sun, 4 Nov 2018 16:12:44 +0000 (08:12 -0800)]
Merge tag 'ntb-4.20' of git://github.com/jonmason/ntb

Pull NTB updates from Jon Mason:
 "Fairly minor changes and bug fixes:

  NTB IDT thermal changes and hook into hwmon, ntb_netdev clean-up of
  private struct, and a few bug fixes"

* tag 'ntb-4.20' of git://github.com/jonmason/ntb:
  ntb: idt: Alter the driver info comments
  ntb: idt: Discard temperature sensor IRQ handler
  ntb: idt: Add basic hwmon sysfs interface
  ntb: idt: Alter temperature read method
  ntb_netdev: Simplify remove with client device drvdata
  NTB: transport: Try harder to alloc an aligned MW buffer
  ntb: ntb_transport: Mark expected switch fall-throughs
  ntb: idt: Set PCIe bus address to BARLIMITx
  NTB: ntb_hw_idt: replace IS_ERR_OR_NULL with regular NULL checks
  ntb: intel: fix return value for ndev_vec_mask()
  ntb_netdev: fix sleep time mismatch

6 years agoMerge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 4 Nov 2018 01:37:09 +0000 (18:37 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Ingo Molnar:
 "A memory (under-)allocation fix and a comment fix"

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/topology: Fix off by one bug
  sched/rt: Update comment in pick_next_task_rt()

6 years agoMerge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 4 Nov 2018 01:25:17 +0000 (18:25 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull x86 fixes from Ingo Molnar:
 "A number of fixes and some late updates:

   - make in_compat_syscall() behavior on x86-32 similar to other
     platforms, this touches a number of generic files but is not
     intended to impact non-x86 platforms.

   - objtool fixes

   - PAT preemption fix

   - paravirt fixes/cleanups

   - cpufeatures updates for new instructions

   - earlyprintk quirk

   - make microcode version in sysfs world-readable (it is already
     world-readable in procfs)

   - minor cleanups and fixes"

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  compat: Cleanup in_compat_syscall() callers
  x86/compat: Adjust in_compat_syscall() to generic code under !COMPAT
  objtool: Support GCC 9 cold subfunction naming scheme
  x86/numa_emulation: Fix uniform-split numa emulation
  x86/paravirt: Remove unused _paravirt_ident_32
  x86/mm/pat: Disable preemption around __flush_tlb_all()
  x86/paravirt: Remove GPL from pv_ops export
  x86/traps: Use format string with panic() call
  x86: Clean up 'sizeof x' => 'sizeof(x)'
  x86/cpufeatures: Enumerate MOVDIR64B instruction
  x86/cpufeatures: Enumerate MOVDIRI instruction
  x86/earlyprintk: Add a force option for pciserial device
  objtool: Support per-function rodata sections
  x86/microcode: Make revision and processor flags world-readable

6 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 4 Nov 2018 01:13:43 +0000 (18:13 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull perf updates and fixes from Ingo Molnar:
 "These are almost all tooling updates: 'perf top', 'perf trace' and
  'perf script' fixes and updates, an UAPI header sync with the merge
  window versions, license marker updates, much improved Sparc support
  from David Miller, and a number of fixes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (66 commits)
  perf intel-pt/bts: Calculate cpumode for synthesized samples
  perf intel-pt: Insert callchain context into synthesized callchains
  perf tools: Don't clone maps from parent when synthesizing forks
  perf top: Start display thread earlier
  tools headers uapi: Update linux/if_link.h header copy
  tools headers uapi: Update linux/netlink.h header copy
  tools headers: Sync the various kvm.h header copies
  tools include uapi: Update linux/mmap.h copy
  perf trace beauty: Use the mmap flags table generated from headers
  perf beauty: Wire up the mmap flags table generator to the Makefile
  perf beauty: Add a generator for MAP_ mmap's flag constants
  tools include uapi: Update asound.h copy
  tools arch uapi: Update asm-generic/unistd.h and arm64 unistd.h copies
  tools include uapi: Update linux/fs.h copy
  perf callchain: Honour the ordering of PERF_CONTEXT_{USER,KERNEL,etc}
  perf cs-etm: Correct CPU mode for samples
  perf unwind: Take pgoff into account when reporting elf to libdwfl
  perf top: Do not use overwrite mode by default
  perf top: Allow disabling the overwrite mode
  perf trace: Beautify mount's first pathname arg
  ...

6 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 4 Nov 2018 01:12:09 +0000 (18:12 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip

Pull irq fixes from Ingo Molnar:
 "An irqchip driver fix and a memory (over-)allocation fix"

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  irqchip/irq-mvebu-sei: Fix a NULL vs IS_ERR() bug in probe function
  irq/matrix: Fix memory overallocation

6 years agosched/topology: Fix off by one bug
Peter Zijlstra [Fri, 2 Nov 2018 13:22:25 +0000 (14:22 +0100)]
sched/topology: Fix off by one bug

With the addition of the NUMA identity level, we increased @level by
one and will run off the end of the array in the distance sort loop.

Fixed: 051f3ca02e46 ("sched/topology: Introduce NUMA identity node sched domain")
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
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>
6 years agoMerge branch 'core/urgent' into x86/urgent, to pick up objtool fix
Ingo Molnar [Sat, 3 Nov 2018 22:42:16 +0000 (23:42 +0100)]
Merge branch 'core/urgent' into x86/urgent, to pick up objtool fix

Signed-off-by: Ingo Molnar <mingo@kernel.org>
6 years agoMerge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Linus Torvalds [Sat, 3 Nov 2018 19:13:57 +0000 (12:13 -0700)]
Merge tag 'armsoc-fixes' of git://git./linux/kernel/git/arm/arm-soc

Pull ARM SoC fixes from Olof Johansson:
 "A few fixes who have come in near or during the merge window:

   - Removal of a VLA usage in Marvell mpp platform code

   - Enable some IPMI options for ARM64 servers by default, helps
     testing

   - Enable PREEMPT on 32-bit ARMv7 defconfig

   - Minor fix for stm32 DT (removal of an unused DMA property)

   - Bugfix for TI OMAP1-based ams-delta (-EINVAL -> IRQ_NOTCONNECTED)"

* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: dts: stm32: update HASH1 dmas property on stm32mp157c
  ARM: orion: avoid VLA in orion_mpp_conf
  ARM: defconfig: Update multi_v7 to use PREEMPT
  arm64: defconfig: Enable some IPMI configs
  soc: ti: QMSS: Fix usage of irq_set_affinity_hint
  ARM: OMAP1: ams-delta: Fix impossible .irq < 0

6 years agoMerge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64...
Linus Torvalds [Sat, 3 Nov 2018 17:55:23 +0000 (10:55 -0700)]
Merge tag 'arm64-upstream' of git://git./linux/kernel/git/arm64/linux

Pull more arm64 updates from Catalin Marinas:

 - fix W+X page (mark RO) allocated by the arm64 kprobes code

 - Makefile fix for .i files in out of tree modules

* tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: kprobe: make page to RO mode when allocate it
  arm64: kdump: fix small typo
  arm64: makefile fix build of .i file in external module case

6 years agoMerge tag 'dma-mapping-4.20-2' of git://git.infradead.org/users/hch/dma-mapping
Linus Torvalds [Sat, 3 Nov 2018 17:53:33 +0000 (10:53 -0700)]
Merge tag 'dma-mapping-4.20-2' of git://git.infradead.org/users/hch/dma-mapping

Pull dma-mapping fix from Christoph Hellwig:
 "Avoid compile warnings on non-default arm64 configs"

* tag 'dma-mapping-4.20-2' of git://git.infradead.org/users/hch/dma-mapping:
  arm64: fix warnings without CONFIG_IOMMU_DMA

6 years agoMerge tag 'kbuild-v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy...
Linus Torvalds [Sat, 3 Nov 2018 17:47:33 +0000 (10:47 -0700)]
Merge tag 'kbuild-v4.20-2' of git://git./linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - clean-up leftovers in Kconfig files

 - remove stale oldnoconfig and silentoldconfig targets

 - remove unneeded cc-fullversion and cc-name variables

 - improve merge_config script to allow overriding option prefix

* tag 'kbuild-v4.20-2' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: remove cc-name variable
  kbuild: replace cc-name test with CONFIG_CC_IS_CLANG
  merge_config.sh: Allow to define config prefix
  kbuild: remove unused cc-fullversion variable
  kconfig: remove silentoldconfig target
  kconfig: remove oldnoconfig target
  powerpc: PCI_MSI needs PCI
  powerpc: remove CONFIG_MCA leftovers
  powerpc: remove CONFIG_PCI_QSPAN
  scsi: aha152x: rename the PCMCIA define

6 years agoMerge tag '4.20-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sat, 3 Nov 2018 17:45:55 +0000 (10:45 -0700)]
Merge tag '4.20-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull cifs fixes and updates from Steve French:
 "Three small fixes (one Kerberos related, one for stable, and another
  fixes an oops in xfstest 377), two helpful debugging improvements,
  three patches for cifs directio and some minor cleanup"

* tag '4.20-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix signed/unsigned mismatch on aio_read patch
  cifs: don't dereference smb_file_target before null check
  CIFS: Add direct I/O functions to file_operations
  CIFS: Add support for direct I/O write
  CIFS: Add support for direct I/O read
  smb3: missing defines and structs for reparse point handling
  smb3: allow more detailed protocol info on open files for debugging
  smb3: on kerberos mount if server doesn't specify auth type use krb5
  smb3: add trace point for tree connection
  cifs: fix spelling mistake, EACCESS -> EACCES
  cifs: fix return value for cifs_listxattr

6 years agoMerge branch 'work.afs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Linus Torvalds [Sat, 3 Nov 2018 17:35:52 +0000 (10:35 -0700)]
Merge branch 'work.afs' of git://git./linux/kernel/git/viro/vfs

Pull 9p fix from Al Viro:
 "Regression fix for net/9p handling of iov_iter; broken by braino when
  switching to iov_iter_is_kvec() et.al., spotted and fixed by Marc"

* 'work.afs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  iov_iter: Fix 9p virtio breakage