Qing Huang [Mon, 23 Jul 2018 21:15:08 +0000 (14:15 -0700)]
IB/mlx5: avoid excessive warning msgs when creating VFs on 2nd port
When a CX5 device is configured in dual-port RoCE mode, after creating
many VFs against port 1, creating the same number of VFs against port 2
will flood kernel/syslog with something like
"mlx5_*:mlx5_ib_bind_slave_port:4266:(pid 5269): port 2 already
affiliated."
So basically, when traversing mlx5_ib_dev_list, mlx5_ib_add_slave_port()
repeatedly attempts to bind the new mpi structure to every device on the
list until it finds an unbound device.
Change the log level from warn to dbg to avoid log flooding as the warning
should be harmless.
Signed-off-by: Qing Huang <qing.huang@oracle.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Mon, 23 Jul 2018 22:37:01 +0000 (15:37 -0700)]
RDMA/usnic: Suppress a compiler warning
This patch avoids that the following compiler warning is reported when
building with gcc 8 and W=1:
drivers/infiniband/hw/usnic/usnic_fwd.c:95:2: warning: 'strncpy' output may be truncated copying 16 bytes from a string of length 20 [-Wstringop-truncation]
strncpy(ufdev->name, netdev_name(ufdev->netdev),
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
sizeof(ufdev->name) - 1);
~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Thu, 26 Jul 2018 17:36:50 +0000 (11:36 -0600)]
net/xprtrdma: Restore needed argument to ib_post_send
The call in svc_rdma_post_chunk_ctxt() does actually use bad_wr.
Fixes:
ed288d74a9e5 ("net/xprtrdma: Simplify ib_post_(send|recv|srq_recv)() calls")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Parav Pandit [Mon, 16 Jul 2018 08:50:13 +0000 (11:50 +0300)]
RDMA/cma: Do not ignore net namespace for unbound cm_id
Currently if the cm_id is not bound to any netdevice, than for such cm_id,
net namespace is ignored; which is incorrect.
Regardless of cm_id bound to a netdevice or not, net namespace must
match. When a cm_id is bound to a netdevice, in such case net namespace
and netdevice both must match.
Fixes:
4c21b5bcef73 ("IB/cma: Add net_dev and private data checks to RDMA CM")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Parav Pandit [Mon, 16 Jul 2018 08:50:12 +0000 (11:50 +0300)]
RDMA/cma: Consider netdevice for RoCE ports
When netdevice is not found for a request, and if it for RoCE port,
currently it allows matching the listener as long as port number matches
by ignoring the netdevice.
Now that we always prefer to have netdevice associated with RoCE, when
netdevice is not found, don't consider RoCE ports.
In other words, a NULL netdevice with RoCE is not acceptable. Therefore,
remove this confusing RoCE port ignorance check.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Parav Pandit [Mon, 16 Jul 2018 08:50:11 +0000 (11:50 +0300)]
IB/core: Introduce and use sgid_attr in CM requests
For RoCE, when CM requests are received for RC and UD connections,
netdevice of the incoming request is unavailable. Because of that CM
requests are always forwarded to init_net namespace.
Now that we have the GID attribute available, introduce SGID attribute in
incoming CM requests and refer to the netdevice of it. This is similar to
existing SGID attribute field in outgoing CM requests for RC and UD
transports.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Tue, 24 Jul 2018 20:37:52 +0000 (14:37 -0600)]
IB/usnic: usnic should not select INFINIBAND_USER_ACCESS
This driver doesn't provide any kernel services, it only provides
an interface via uverbs, so it should depend on, not select, uverbs
support.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Raju Rangoju [Wed, 25 Jul 2018 15:52:14 +0000 (21:22 +0530)]
rdma/cxgb4: Add support for kernel mode SRQ's
This patch implements the srq specific verbs such as create/destroy/modify
and post_srq_recv. And adds srq specific structures and defines to t4.h
and uapi.
Also updates the cq poll logic to deal with completions that are
associated with the SRQ's.
This patch also handles kernel mode SRQ_LIMIT events as well as flushed
SRQ buffers
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Raju Rangoju [Wed, 25 Jul 2018 15:52:13 +0000 (21:22 +0530)]
rdma/cxgb4: Add support for srq functions & structs
This patch adds kernel mode t4_srq structures and support functions,
uapi structures and defines, as well as firmware work request structures.
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Varsha Rao [Wed, 25 Jul 2018 18:43:56 +0000 (20:43 +0200)]
IB/core: Remove extra parentheses
Remove unnecessary parentheses to fix the clang warning of extraneous
parentheses.
Signed-off-by: Varsha Rao <rvarsha016@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:01:35 +0000 (09:01 -0700)]
RDMA/ocrdma: Suppress a compiler warning
This patch avoids that the following compiler warning is reported when
building with gcc 8 and W=1:
In function 'ocrdma_mbx_get_ctrl_attribs',
inlined from 'ocrdma_init_hw' at drivers/infiniband/hw/ocrdma/ocrdma_hw.c:3224:11:
drivers/infiniband/hw/ocrdma/ocrdma_hw.c:1368:3: warning: 'strncpy' output may be truncated copying 31 bytes from a string of length 31 [-Wstringop-truncation]
strncpy(dev->model_number,
^~~~~~~~~~~~~~~~~~~~~~~~~~
hba_attribs->controller_model_number, 31);
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Tue, 10 Jul 2018 19:43:06 +0000 (13:43 -0600)]
IB/uverbs: Fix locking around struct ib_uverbs_file ucontext
We have a parallel unlocked reader and writer with ib_uverbs_get_context()
vs everything else, and nothing guarantees this works properly.
Audit and fix all of the places that access ucontext to use one of the
following locking schemes:
- Call ib_uverbs_get_ucontext() under SRCU and check for failure
- Access the ucontext through an struct ib_uobject context member
while holding a READ or WRITE lock on the uobject.
This value cannot be NULL and has no race.
- Hold the ucontext_lock and check for ufile->ucontext !NULL
This also re-implements ib_uverbs_get_ucontext() in a way that is safe
against concurrent ib_uverbs_get_context() and disassociation.
As a side effect, every access to ucontext in the commands is via
ib_uverbs_get_context() with an error check, or via the uobject, so there
is no longer any need for the core code to check ucontext on every command
call. These checks are also removed.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 02:55:22 +0000 (20:55 -0600)]
IB/mlx5: Use the ucontext from the uobj, not the file
This approach matches the standard flow of the typical write method that
relies on the HW object to store the device and the uobject to access the
ucontext. Avoids the use of the devx_ufile2uctx in several places will
make revising the semantics of ib_uverbs_get_ucontext() in the next patch
simpler.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 02:55:21 +0000 (20:55 -0600)]
IB/uverbs: Move the FD uobj type struct file allocation to alloc_commit
Allocating the struct file during alloc_begin creates this strange
asymmetry with IDR, where the FD has two krefs pointing at it during the
pre-commit phase. In particular this makes the abort process for FD very
strange and confusing.
For instance abort currently calls the type's destroy_object twice, and
the fops release once if abort is done. This is very counter intuitive. No
fops should be called until alloc_commit succeeds, and destroy_object
should only ever be called once.
Moving the struct file allocation to the alloc_commit is now simple, as we
already support failure of rdma_alloc_commit_uobject, with all the
required rollback pieces.
This creates an understandable symmetry with IDR and simplifies/fixes the
abort handling for FD types.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 02:55:20 +0000 (20:55 -0600)]
IB/uverbs: Always propagate errors from rdma_alloc_commit_uobject()
The ioctl framework already does this correctly, but the write path did
not. This is trivially fixed by simply using a standard pattern to return
uobj_alloc_commit() as the last statement in every function.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 02:55:19 +0000 (20:55 -0600)]
IB/uverbs: Rework the locking for cleaning up the ucontext
The locking here has always been a bit crazy and spread out, upon some
careful analysis we can simplify things.
Create a single function uverbs_destroy_ufile_hw() that internally handles
all locking. This pulls together pieces of this process that were
sprinkled all over the places into one place, and covers them with one
lock.
This eliminates several duplicate/confusing locks and makes the control
flow in ib_uverbs_close() and ib_uverbs_free_hw_resources() extremely
simple.
Unfortunately we have to keep an extra mutex, ucontext_lock. This lock is
logically part of the rwsem and provides the 'down write, fail if write
locked, wait if read locked' semantic we require.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 02:55:18 +0000 (20:55 -0600)]
IB/uverbs: Revise and clarify the rwsem and uobjects_lock
Rename 'cleanup_rwsem' to 'hw_destroy_rwsem' which is held across any call
to the type destroy function (aka 'hw' destroy). The main purpose of this
lock is to prevent normal add and destroy from running concurrently with
uverbs_cleanup_ufile()
Since the uobjects list is always manipulated under the 'hw_destroy_rwsem'
we can eliminate the uobjects_lock in the cleanup function. This allows
converting that lock to a very simple spinlock with a narrow critical
section.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 02:55:17 +0000 (20:55 -0600)]
IB/uverbs: Clarify and revise uverbs_close_fd
The locking requirements here have changed slightly now that we can rely
on the ib_uverbs_file always existing and containing all the necessary
locking infrastructure.
That means we can get rid of the cleanup_mutex usage (this was protecting
the check on !uboj->context).
Otherwise, follow the same pattern that IDR uses for destroy, acquire
exclusive write access, then call destroy and the undo the 'lookup'.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 02:55:16 +0000 (20:55 -0600)]
IB/uverbs: Revise the placement of get/puts on uobject
This wasn't wrong, but the placement of two krefs didn't make any
sense. Follow some simple rules.
- A kref is held inside uobjects_list
- A kref is held inside the IDR
- A kref is held inside file->private
- A stack based kref is passed bettwen alloc_begin and
alloc_abort/alloc_commit
Any place we destroy one of the above pointers, we stick a put,
or 'move' the kref into another pointer.
The key functions have sensible semantics:
- alloc_uobj fully initializes the common members in uobj, including
the list
- Get rid of the uverbs_idr_remove_uobj helper since IDR remove
does require put, but it depends on the situation. Later
patches will re-consolidate this differently.
- alloc_abort always consumes the passed kref, done in the type
- alloc_commit always consumes the passed kref, done in the type
- rdma_remove_commit_uobject always pairs with a lookup_get
After it is all done the only control flow change is to:
- move a get from alloc_commit_fd_uobject to rdma_alloc_commit_uobject
- add a put to remove_commit_idr_uobject
- Consistenly use rdma_lookup_put in rdma_remove_commit_uobject at
the right place
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 02:55:15 +0000 (20:55 -0600)]
IB/uverbs: Clarify the kref'ing ordering for alloc_commit
The alloc_commit callback makes the uobj visible to other threads,
and it does so using a 'move' semantic of the uobj kref on the stack
into the public storage (eg the IDR, uobject list and file_private_data)
Once this is done another thread could start up and trigger deletion
of the kref. Fortunately cleanup_rwsem happens to prevent this from
being a bug, but that is a fantastically unclear side effect.
Re-organize things so that alloc_commit is that last thing to touch
the uobj, get rid of the sneaky implicit dependency on cleanup_rwsem,
and add a comment reminding that uobj is no longer kref'd after
alloc_commit.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 02:55:14 +0000 (20:55 -0600)]
IB/uverbs: Handle IDR and FD types without truncation
Our ABI for write() uses a s32 for FDs and a u32 for IDRs, but internally
we ended up implicitly casting these ABI values into an 'int'. For ioctl()
we use a s64 for FDs and a u64 for IDRs, again casting to an int.
The various casts to int are all missing range checks which can cause
userspace values that should be considered invalid to be accepted.
Fix this by making the generic lookup routine accept a s64, which does not
truncate the write API's u32/s32 or the ioctl API's s64. Then push the
detailed range checking down to the actual type implementations to be
shared by both interfaces.
Finally, change the copy of the uobj->id to sign extend into a s64, so eg,
if we ever wish to return a negative value for a FD it is carried
properly.
This ensures that userspace values are never weirdly interpreted due to
the various trunctations and everything that is really out of range gets
an EINVAL.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 02:55:13 +0000 (20:55 -0600)]
IB/uverbs: Get rid of null_obj_type
If the method fails after calling rdma_explicit_destroy (eg if
copy_to_user faults) then it will trigger a kernel oops:
BUG: unable to handle kernel NULL pointer dereference at
0000000000000000
PGD
800000000548d067 P4D
800000000548d067 PUD 54a0067 PMD 0
SMP PTI
CPU: 0 PID: 359 Comm: ibv_rc_pingpong Not tainted 4.18.0-rc1+ #28
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.7.5-0-ge51488c-20140602_164612-nilsson.home.kraxel.org 04/01/2014
RIP: 0010: (null)
Code: Bad RIP value.
RSP: 0018:
ffffc900001a3bf0 EFLAGS:
00010246
RAX:
0000000000000000 RBX:
ffff88000603bd00 RCX:
0000000000000003
RDX:
0000000000000001 RSI:
0000000000000001 RDI:
ffff88000603bd00
RBP:
0000000000000001 R08:
ffffc900001a3cf8 R09:
0000000000000000
R10:
0000000000000000 R11:
0000000000000000 R12:
ffffc900001a3cf0
R13:
0000000000000000 R14:
ffffc900001a3cf0 R15:
0000000000000000
FS:
00007fb00dda8700(0000) GS:
ffff880007c00000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
ffffffffffffffd6 CR3:
000000000548e004 CR4:
00000000003606b0
DR0:
0000000000000000 DR1:
0000000000000000 DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000fffe0ff0 DR7:
0000000000000400
Call Trace:
? rdma_lookup_put_uobject+0x22/0x50 [ib_uverbs]
? uverbs_finalize_object+0x3b/0x60 [ib_uverbs]
? uverbs_finalize_attrs+0x128/0x140 [ib_uverbs]
? ib_uverbs_cmd_verbs+0x698/0x7c0 [ib_uverbs]
? find_held_lock+0x2d/0x90
? __might_fault+0x39/0x90
? ib_uverbs_ioctl+0x111/0x1f0 [ib_uverbs]
? do_vfs_ioctl+0xa0/0x6d0
? trace_hardirqs_on_caller+0xed/0x180
? _raw_spin_unlock_irq+0x24/0x40
? syscall_trace_enter+0x138/0x1d0
? ksys_ioctl+0x35/0x60
? __x64_sys_ioctl+0x11/0x20
? do_syscall_64+0x5b/0x1c0
? entry_SYSCALL_64_after_hwframe+0x49/0xbe
This is because the type was replaced with the null_type during explicit
destroy that cannot complete the destruction.
One of the side effects of replacing the type is to make the object
handle totally unreachable - so no other command could attempt to use
it, even though it remains on the uboject list.
We can get the same end result by just fully destroying the object inside
rdma_explicit_destroy and leaving the caller the residual kref for the
uobj with no attached HW object, and no presence in the ubojects list.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:31 +0000 (09:25 -0700)]
net/xprtrdma: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Chuck Lever <chuck.lever@oracle.com>
Acked-by: Anna Schumaker <Anna.Schumaker@netapp.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:30 +0000 (09:25 -0700)]
net/smc: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:29 +0000 (09:25 -0700)]
net/smc: Remove a WARN_ON() statement
Remove a WARN_ON() statement that verifies something that is guaranteed
by the RDMA API, namely that the failed_wr pointer is not touched if an
ib_post_send() call succeeds and that it points at the failed wr if an
ib_post_send() call fails.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:28 +0000 (09:25 -0700)]
net/rds: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:27 +0000 (09:25 -0700)]
net/rds: Remove two WARN_ON() statements
Remove two WARN_ON() statements that verify something that is guaranteed
by the RDMA API, namely that the failed_wr pointer is not touched if an
ib_post_send() call succeeds and that it points at the failed wr if an
ib_post_send() call fails.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:26 +0000 (09:25 -0700)]
net/9p: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:25 +0000 (09:25 -0700)]
fs/cifs: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:24 +0000 (09:25 -0700)]
nvmet-rdma: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:23 +0000 (09:25 -0700)]
nvme-rdma: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:22 +0000 (09:25 -0700)]
IB/srpt: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:21 +0000 (09:25 -0700)]
IB/srp: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:20 +0000 (09:25 -0700)]
IB/isert: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:19 +0000 (09:25 -0700)]
IB/iser: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Reviewed-by: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:18 +0000 (09:25 -0700)]
IB/IPoIB: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:17 +0000 (09:25 -0700)]
RDMA/core: Simplify ib_post_(send|recv|srq_recv)() calls
Instead of declaring and passing a dummy 'bad_wr' pointer, pass NULL
as third argument to ib_post_(send|recv|srq_recv)().
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:25:16 +0000 (09:25 -0700)]
IB/core: Allow ULPs to specify NULL as the third ib_post_(send|recv|srq_recv)() argument
This patch does not change the behavior of the modified functions.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Zhu Yanjun [Fri, 13 Jul 2018 07:10:20 +0000 (03:10 -0400)]
IB/rxe: Drop QP0 silently
According to "Annex A16: RDMA over Converged Ethernet (RoCE)":
A16.4.3 MANAGEMENT INTERFACES
As defined in the base specification, a special Queue Pair, QP0 is defined
solely for communication between subnet manager(s) and subnet management
agents. Since such an IB-defined subnet management architecture is outside
the scope of this annex, it follows that there is also no requirement that
a port which conforms to this annex be associated with a QP0. Thus, for
end nodes designed to conform to this annex, the concept of QP0 is
undefined and unused for any port connected to an Ethernet network.
CA16-8: A packet arriving at a RoCE port containing a BTH with the
destination QP field set to QP0 shall be silently dropped.
Signed-off-by: Zhu Yanjun <yanjun.zhu@oracle.com>
Acked-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Wei Yongjun [Wed, 11 Jul 2018 13:15:42 +0000 (13:15 +0000)]
IB/ipoib: Fix error return code in ipoib_dev_init()
Fix to return a negative error code from the ipoib_neigh_hash_init()
error handling case instead of 0, as done elsewhere in this function.
Fixes:
515ed4f3aab4 ("IB/IPoIB: Separate control and data related initializations")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Yuval Shaia <yuval.shaia@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Yishai Hadas [Mon, 23 Jul 2018 12:25:12 +0000 (15:25 +0300)]
IB/mlx5: Enable driver uapi commands for flow steering
Expose the mlx5 flow steering parsing trees, exposing the functionality to
user space.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Yishai Hadas [Mon, 23 Jul 2018 12:25:11 +0000 (15:25 +0300)]
IB/mlx5: Add support for a flow table destination for driver flow steering
Add support to set a destination that is a flow table, this can come from
the DEVX destination.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Yishai Hadas [Mon, 23 Jul 2018 12:25:10 +0000 (15:25 +0300)]
IB/mlx5: Support adding flow steering rule by raw description
Add support to set a public flow steering rule when its destination is a
TIR by using raw specification data.
The logic follows the verbs API but instead of using ib_spec(s) the raw,
device specific, description is used.
This allows supporting specialty matchers without having to define new
matches in the verbs struct based language.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Yishai Hadas [Mon, 23 Jul 2018 12:25:09 +0000 (15:25 +0300)]
IB/mlx5: Introduce driver create and destroy flow methods
Introduce driver create and destroy flow methods on the uverbs flow
object.
This allows the driver to get its specific device attributes to match the
underlay specification while still using the generic ib_flow object for
cleanup and code sharing.
The IB object's attributes are set via the ib_set_flow() helper function.
The specific implementation for the given specification is added in
downstream patches.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Yishai Hadas [Mon, 23 Jul 2018 12:25:08 +0000 (15:25 +0300)]
IB: Support ib_flow creation in drivers
This patch considers the case that ib_flow is created by some device
driver with its specific parameters using the KABI infrastructure.
In that case both QP and ib_uflow_resources might not be applicable.
Downstream patches from this series use the above functionality.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Yishai Hadas [Mon, 23 Jul 2018 12:25:07 +0000 (15:25 +0300)]
IB/mlx5: Introduce flow steering matcher uapi object
Introduce flow steering matcher object and its create and destroy methods.
This matcher object holds some mlx5 specific driver properties that
matches the underlay device specification when an mlx5 flow steering group
is created.
It will be used in downstream patches to be part of mlx5 specific create
flow method.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Tue, 24 Jul 2018 19:10:23 +0000 (13:10 -0600)]
Merge branch 'mellanox/mlx5-next' into rdma.git for-next
From git://git.kernel.org/pub/scm/linux/kernel/git/mellanox/linux.git
This is required to resolve dependencies of the next series of RDMA
patches.
* branch 'mellanox/mlx5-next':
net/mlx5: Add support for flow table destination number
net/mlx5: Add forward compatible support for the FTE match data
net/mlx5: Fix tristate and description for MLX5 module
net/mlx5: Better return types for CQE API
net/mlx5: Use ERR_CAST() instead of coding it
net/mlx5: Add missing SET_DRIVER_VERSION command translation
net/mlx5: Add XRQ commands definitions
net/mlx5: Add core support for double vlan push/pop steering action
net/mlx5: Expose MPEGC (Management PCIe General Configuration) structures
net/mlx5: FW tracer, add hardware structures
net/mlx5: fix uaccess beyond "count" in debugfs read/write handlers
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Yishai Hadas [Tue, 19 Jun 2018 12:23:36 +0000 (15:23 +0300)]
net/mlx5: Add support for flow table destination number
Add support to set a destination from a flow table number.
This functionality will be used in downstream patches from this
series by the DEVX stuff.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Yishai Hadas [Tue, 19 Jun 2018 12:09:48 +0000 (15:09 +0300)]
net/mlx5: Add forward compatible support for the FTE match data
Use the PRM size including the reserved when working with the FTE
match data.
This comes to support forward compatibility for cases that current
reserved data will be exposed by the firmware by an application that
uses the DEVX API without changing the kernel.
Also drop some driver checks around the match criteria leaving the work
for firmware to enable forward compatibility for future bits there.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 22:20:44 +0000 (16:20 -0600)]
IB/uverbs: Move ib_access_flags and ib_read_counters_flags to uapi
These constants are used in the ioctl interface so they are part of the
uapi, place them in the correct header for clarity.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 16:14:36 +0000 (09:14 -0700)]
MAINTAINERS: Remove Dave Goodell from the usnic RDMA driver maintainer list
The e-mail address dgoodell@exch.cisco.com no longer exists. Additionally,
according to https://www.linkedin.com/in/goodell/ Dave is an Amazon
employee since December 2017. Hence remove his Cisco e-mail address from
the usnic maintainer list.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Acked-by: Christian Benvenuti <benve@cisco.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 18 Jul 2018 15:58:02 +0000 (08:58 -0700)]
RDMA/bnxt_re: Modify a fall-through annotation
This patch avoids that gcc reports the following warning when building
with W=1:
drivers/infiniband/hw/bnxt_re/ib_verbs.c:2404:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Kamal Heib [Wed, 18 Jul 2018 21:05:32 +0000 (00:05 +0300)]
RDMA/mlx5: Remove set but not used variables
Remove "uctx" and "pa" variables that were set but not used.
Fixes:
a8b92ca1b0e5 ("IB/mlx5: Introduce DEVX")
Fixes:
8f0622873358 ("RDMA/mlx5: Remove debug prints of VMA pointers")
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Acked-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jan Dakinevich [Mon, 9 Jul 2018 13:51:03 +0000 (16:51 +0300)]
IPoIB: use kvzalloc to allocate an array of bucket pointers
This table by default takes 32KiB which is 3rd memory order. Meanwhile,
this memory is not aimed for DMA operation and could be safely allocated
by vmalloc.
Signed-off-by: Jan Dakinevich <jan.dakinevich@virtuozzo.com>
Reviewed-by: HÃ¥kon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Eran Ben Elisha [Tue, 17 Jul 2018 01:35:37 +0000 (18:35 -0700)]
net/mlx5: Fix tristate and description for MLX5 module
Current description did not include new devices. Fix that by proving the
correct generic description.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Tariq Toukan [Tue, 17 Jul 2018 01:35:36 +0000 (18:35 -0700)]
net/mlx5: Better return types for CQE API
Reduce sizes of return types.
Use bool for binary indication.
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Roi Dayan [Tue, 17 Jul 2018 01:35:35 +0000 (18:35 -0700)]
net/mlx5: Use ERR_CAST() instead of coding it
This makes it more readable that rule is being used to return an err.
Signed-off-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Noa Osherovich [Tue, 17 Jul 2018 01:35:34 +0000 (18:35 -0700)]
net/mlx5: Add missing SET_DRIVER_VERSION command translation
When translating command opcodes to a string, SET_DRIVER_VERSION
command was missing.
Fixes:
42ca502e179d0 ('net/mlx5_core: Use a macro in mlx5_command_str()')
Signed-off-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Max Gurtovoy [Tue, 17 Jul 2018 01:35:33 +0000 (18:35 -0700)]
net/mlx5: Add XRQ commands definitions
Update mlx5 command list and error return function to handle XRQ
commands.
Signed-off-by: Max Gurtovoy <maxg@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Jianbo Liu [Tue, 17 Jul 2018 01:35:32 +0000 (18:35 -0700)]
net/mlx5: Add core support for double vlan push/pop steering action
As newer firmware supports double push/pop in a single FTE, we add
core bits and extend vlan action logic for it.
Signed-off-by: Jianbo Liu <jianbol@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Eran Ben Elisha [Tue, 17 Jul 2018 01:35:31 +0000 (18:35 -0700)]
net/mlx5: Expose MPEGC (Management PCIe General Configuration) structures
This patch exposes PRM layout for handling MPEGC (Management PCIe
General Configuration).
This will be used in the downstream patch for configuring MPEGC via the
driver.
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Reviewed-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Feras Daoud [Tue, 17 Jul 2018 01:35:30 +0000 (18:35 -0700)]
net/mlx5: FW tracer, add hardware structures
This change adds the infrastructure to mlx5 core fw tracer.
It introduces the following 4 new registers:
MLX5_REG_MTRC_CAP - Used to read tracer capabilities
MLX5_REG_MTRC_CONF - Used to set tracer configurations
MLX5_REG_MTRC_STDB - Used to query tracer strings database
MLX5_REG_MTRC_CTRL - Used to control the tracer
The capability of the tracing can be checked using mcam access
register, therefore, the mcam access register interface will expose
the tracer register.
Signed-off-by: Feras Daoud <ferasda@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Jason Gunthorpe [Wed, 11 Jul 2018 08:20:29 +0000 (11:20 +0300)]
IB/cm: Remove cma_multicast->igmp_joined
This variable isn't read and written to with proper locking, so it is
racy. Instead of using an unlocked bool use presence in the mc->list
The caller could race rdma_join_multicast with rdma_leave_multicast which
would leak a mc join and cause a use after free of mc.
Instead, do not add the mc to the list until it has completed
initialization, all mcs on the list require leaving.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Leon Romanovsky [Tue, 10 Jul 2018 10:31:49 +0000 (13:31 +0300)]
RDMA/umem: Refactor exit paths in ib_umem_get
Simplify exit paths in ib_umem_get to use the standard goto unwind
pattern.
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Leon Romanovsky [Tue, 10 Jul 2018 10:31:48 +0000 (13:31 +0300)]
RDMA/umem: Don't hold mmap_sem for too long
DMA mapping is time consuming operation and doesn't need to be performed
with mmap_sem semaphore is held.
The semaphore only needs to be held for accounting and get_user_pages
related activities.
Signed-off-by: Huy Nguyen <huyn@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Tue, 10 Jul 2018 17:31:59 +0000 (10:31 -0700)]
IB/srpt: Fix srpt_cm_req_recv() error path (2/2)
If a login request was received through the RDMA/CM and if an error occurs
during login, clear rdma_cm_id->context instead of ib_cm_id->context.
Fixes:
63cf1a902c9d ("IB/srpt: Add RDMA/CM support")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Tue, 10 Jul 2018 17:31:58 +0000 (10:31 -0700)]
IB/srpt: Fix srpt_cm_req_recv() error path (1/2)
Once a target session has been allocated, if an error occurs, the session
must be freed. Since it is not safe to call blocking code from the context
of an connection manager callback, trigger target session release in this
case by calling srpt_close_ch().
Fixes:
db7683d7deb2 ("IB/srpt: Fix login-related race conditions")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Leon Romanovsky [Sun, 8 Jul 2018 10:50:21 +0000 (13:50 +0300)]
RDMA/mlx5: Check that supplied blue flame index doesn't overflow
User's supplied index is checked again total number of system pages, but
this number already includes num_static_sys_pages, so addition of that
value to supplied index causes to below error while trying to access
sys_pages[].
BUG: KASAN: slab-out-of-bounds in bfregn_to_uar_index+0x34f/0x400
Read of size 4 at addr
ffff880065561904 by task syz-executor446/314
CPU: 0 PID: 314 Comm: syz-executor446 Not tainted 4.18.0-rc1+ #256
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.11.0-0-g63451fca13-prebuilt.qemu-project.org 04/01/2014
Call Trace:
dump_stack+0xef/0x17e
print_address_description+0x83/0x3b0
kasan_report+0x18d/0x4d0
bfregn_to_uar_index+0x34f/0x400
create_user_qp+0x272/0x227d
create_qp_common+0x32eb/0x43e0
mlx5_ib_create_qp+0x379/0x1ca0
create_qp.isra.5+0xc94/0x22d0
ib_uverbs_create_qp+0x21b/0x2a0
ib_uverbs_write+0xc2c/0x1010
vfs_write+0x1b0/0x550
ksys_write+0xc6/0x1a0
do_syscall_64+0xa7/0x590
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x433679
Code: fd ff 48 81 c4 80 00 00 00 e9 f1 fe ff ff 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b 91 fd ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:
00007fff2b3d8e48 EFLAGS:
00000217 ORIG_RAX:
0000000000000001
RAX:
ffffffffffffffda RBX:
00000000004002f8 RCX:
0000000000433679
RDX:
0000000000000040 RSI:
0000000020000240 RDI:
0000000000000003
RBP:
00000000006d4018 R08:
00000000004002f8 R09:
00000000004002f8
R10:
00000000004002f8 R11:
0000000000000217 R12:
0000000000000000
R13:
000000000040cb00 R14:
000000000040cb90 R15:
0000000000000006
Allocated by task 314:
kasan_kmalloc+0xa0/0xd0
__kmalloc+0x1a9/0x510
mlx5_ib_alloc_ucontext+0x966/0x2620
ib_uverbs_get_context+0x23f/0xa60
ib_uverbs_write+0xc2c/0x1010
__vfs_write+0x10d/0x720
vfs_write+0x1b0/0x550
ksys_write+0xc6/0x1a0
do_syscall_64+0xa7/0x590
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Freed by task 1:
__kasan_slab_free+0x12e/0x180
kfree+0x159/0x630
kvfree+0x37/0x50
single_release+0x8e/0xf0
__fput+0x2d8/0x900
task_work_run+0x102/0x1f0
exit_to_usermode_loop+0x159/0x1c0
do_syscall_64+0x408/0x590
entry_SYSCALL_64_after_hwframe+0x49/0xbe
The buggy address belongs to the object at
ffff880065561100
which belongs to the cache kmalloc-4096 of size 4096
The buggy address is located 2052 bytes inside of
4096-byte region [
ffff880065561100,
ffff880065562100)
The buggy address belongs to the page:
page:
ffffea0001955800 count:1 mapcount:0 mapping:
ffff88006c402480 index:0x0 compound_mapcount: 0
flags: 0x4000000000008100(slab|head)
raw:
4000000000008100 ffffea0001a7c000 0000000200000002 ffff88006c402480
raw:
0000000000000000 0000000080070007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff880065561800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff880065561880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>
ffff880065561900: 04 fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff880065561980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff880065561a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Cc: <stable@vger.kernel.org> # 4.15
Fixes:
1ee47ab3e8d8 ("IB/mlx5: Enable QP creation with a given blue flame index")
Reported-by: Noa Osherovich <noaos@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Leon Romanovsky [Sun, 8 Jul 2018 10:50:20 +0000 (13:50 +0300)]
RDMA/mlx5: Melt consecutive calls to alloc_bfreg() in one call
There is no need for three consecutive calls to alloc_bfreg(). It can be
implemented with one function.
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Raju Rangoju [Thu, 5 Jul 2018 12:56:01 +0000 (18:26 +0530)]
rdma/cxgb4: Add support for 64Byte cqes
This patch adds support for iw_cxb4 to extend cqes from existing 32Byte
size to 64Byte.
Also includes adds backward compatibility support (for 32Byte) to work
with older libraries.
Signed-off-by: Raju Rangoju <rajur@chelsio.com>
Reviewed-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Wed, 11 Jul 2018 15:29:00 +0000 (08:29 -0700)]
hns: Remove a set-but-not-used variable
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Tue, 10 Jul 2018 18:32:16 +0000 (11:32 -0700)]
IB/hfi1: Suppress a compiler warning
Avoid that the following compiler warning is reported when building
with gcc 8:
drivers/infiniband/hw/hfi1/verbs.c:1896:2: warning: 'strncpy' output may be truncated copying 64 bytes from a string of length 64 [-Wstringop-truncation]
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
oulijun [Mon, 9 Jul 2018 09:48:10 +0000 (17:48 +0800)]
RDMA/hns: Update the implementation of set_mac
This patch updates the implementation of set_mac by using
command queue instead of directly writing registers.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
oulijun [Mon, 9 Jul 2018 09:48:09 +0000 (17:48 +0800)]
RDMA/hns: Update the implementation of set_gid
This patch updates the implementation of set_gid by using
command queue instead of directly writing registers.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
oulijun [Mon, 9 Jul 2018 09:48:08 +0000 (17:48 +0800)]
RDMA/hns: Add TPQ link table support
In hip08, the TPQ(Timer Poll Queue) should be extended
to host memory. This patch adds the support of TPQ.
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
oulijun [Mon, 9 Jul 2018 09:48:07 +0000 (17:48 +0800)]
RDMA/hns: Add TSQ link table support
In hip08, TSQ(Transport Service Queue) should be extended
to host memory to store the doorbells. This patch adds the
support of creating TSQ, and then configured to the hardware.
Signed-off-by: Yixian Liu <liuyixian@huawei.com>
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Wei Hu (Xavier) <xavier.huwei@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
oulijun [Mon, 9 Jul 2018 09:48:06 +0000 (17:48 +0800)]
RDMA/hns: Fix endian conversions and annotations
This patch removes the warnings reported by sparse.
Signed-off-by: Lijun Ou <oulijun@huawei.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jann Horn [Fri, 6 Jul 2018 20:18:09 +0000 (22:18 +0200)]
net/mlx5: fix uaccess beyond "count" in debugfs read/write handlers
In general, accessing userspace memory beyond the length of the supplied
buffer in VFS read/write handlers can lead to both kernel memory corruption
(via kernel_read()/kernel_write(), which can e.g. be triggered via
sys_splice()) and privilege escalation inside userspace.
In this case, the affected files are in debugfs (and should therefore only
be accessible to root) and check that *pos is zero (which prevents the
sys_splice() trick). Therefore, this is not a security fix, but rather a
small cleanup.
For the read handlers, fix it by using simple_read_from_buffer() instead of
custom logic.
For the write handler, add a check.
changed in v2:
- also fix dbg_write()
Fixes:
e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters")
Signed-off-by: Jann Horn <jannh@google.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Bart Van Assche [Fri, 6 Jul 2018 20:04:30 +0000 (13:04 -0700)]
RDMA/ocrdma: Make ocrdma_destroy_qp() easier to analyze
This patch does not change any functionality but avoids that sparse
reports the following:
drivers/infiniband/hw/ocrdma/ocrdma_verbs.c:1818:31: warning: context imbalance in 'ocrdma_destroy_qp' - different lock contexts for basic block
Compile-tested only.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Selvin Xavier <selvin.xavier@broadcom.com>
Cc: Devesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Arnd Bergmann [Mon, 9 Jul 2018 08:34:43 +0000 (10:34 +0200)]
infiniband: i40iw, nes: don't use wall time for TCP sequence numbers
The nes infiniband driver uses current_kernel_time() to get a nanosecond
granunarity timestamp to initialize its tcp sequence counters. This is
one of only a few remaining users of that deprecated function, so we
should try to get rid of it.
Aside from using a deprecated API, there are several problems I see here:
- Using a CLOCK_REALTIME based time source makes it predictable in
case the time base is synchronized.
- Using a coarse timestamp means it only gets updated once per jiffie,
making it even more predictable in order to avoid having to access
the hardware clock source
- The upper 2 bits are always zero because the nanoseconds are at most
999999999.
For the Linux TCP implementation, we use secure_tcp_seq(), which appears
to be appropriate here as well, and solves all the above problems.
i40iw uses a variant of the same code, so I do that same thing there
for ipv4. Unlike nes, i40e also supports ipv6, which needs to call
secure_tcpv6_seq instead.
Acked-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Tue, 10 Jul 2018 20:32:24 +0000 (13:32 -0700)]
RDMA/nes: Avoid complaints about unused variables
Avoid that the compiler reports the following when building with W=1:
drivers/infiniband/hw/nes/nes_utils.c: In function 'nes_arp_table':
drivers/infiniband/hw/nes/nes_utils.c:689:9: warning: variable 'tmp_addr' set but not used [-Wunused-but-set-variable]
__be32 tmp_addr;
^~~~~~~~
drivers/infiniband/hw/nes/nes_hw.c: In function 'flush_wqes':
drivers/infiniband/hw/nes/nes_hw.c:3840:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
int ret;
^~~
drivers/infiniband/hw/nes/nes_verbs.c: In function 'nes_setup_virt_qp':
drivers/infiniband/hw/nes/nes_verbs.c:811:6: warning: variable 'pbl_entries' set but not used [-Wunused-but-set-variable]
u32 pbl_entries;
^~~~~~~~~~~
drivers/infiniband/hw/nes/nes_verbs.c: In function 'nes_dereg_mr':
drivers/infiniband/hw/nes/nes_verbs.c:2487:6: warning: variable 'minor_code' set but not used [-Wunused-but-set-variable]
u16 minor_code;
^~~~~~~~~~
drivers/infiniband/hw/nes/nes_cm.c: In function 'mini_cm_recv_pkt':
drivers/infiniband/hw/nes/nes_cm.c:2570:20: warning: variable 'tmp_saddr' set but not used [-Wunused-but-set-variable]
__be32 tmp_daddr, tmp_saddr;
^~~~~~~~~
drivers/infiniband/hw/nes/nes_cm.c:2570:9: warning: variable 'tmp_daddr' set but not used [-Wunused-but-set-variable]
__be32 tmp_daddr, tmp_saddr;
^~~~~~~~~
drivers/infiniband/hw/nes/nes_cm.c: In function 'cm_event_connected':
drivers/infiniband/hw/nes/nes_cm.c:3578:22: warning: variable 'raddr' set but not used [-Wunused-but-set-variable]
struct sockaddr_in *raddr;
^~~~~
drivers/infiniband/hw/nes/nes_cm.c: In function 'cm_event_reset':
drivers/infiniband/hw/nes/nes_cm.c:3753:6: warning: variable 'ret' set but not used [-Wunused-but-set-variable]
int ret;
^~~
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Faisal Latif <faisal.latif@intel.com>
Cc: Tatyana Nikolova <Tatyana.E.Nikolova@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Tue, 10 Jul 2018 19:03:16 +0000 (13:03 -0600)]
RDMA/cxgb4: Restore the dropped uninitialized_var
In some configurations even gcc 7 cannot unravel this complexity and still
throws a warning.
Fixes:
4ab39e2f98f2 ("RDMA/cxgb4: Make c4iw_poll_cq_one() easier to analyze")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Yishai Hadas [Sun, 8 Jul 2018 10:24:39 +0000 (13:24 +0300)]
IB: Enable uverbs_destroy_def_handler to be used by drivers
Enable uverbs_destroy_def_handler to be used by drivers and replace
current code to use it.
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jan Dakinevich [Mon, 9 Jul 2018 13:51:08 +0000 (16:51 +0300)]
ib_srpt: use kvmalloc to allocate ring pointers
An array of pointers to SRPT contexts in ib_device is over 30KiB even
in default case, in which an amount of contexts is 4095. The patch
is intended to weed out large contigous allocation for non-DMA memory.
Signed-off-by: Jan Dakinevich <jan.dakinevich@virtuozzo.com>
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Artemy Kovalyov [Wed, 4 Jul 2018 12:57:51 +0000 (15:57 +0300)]
IB/uverbs: Pass IB_UVERBS_QPF_GRH_REQUIRED to user space
Userspace also needs to know if the port requires GRHs to properly form
the AVs it creates.
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Artemy Kovalyov [Wed, 4 Jul 2018 12:57:50 +0000 (15:57 +0300)]
RDMA: Validate grh_required when handling AVs
Extend the existing grh_required flag to check when AV's are handled that
a GRH is present.
Since we don't want to do query_port during the AV checks for performance
reasons move the flag into the immutable_data.
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Wed, 4 Jul 2018 12:57:49 +0000 (15:57 +0300)]
RDMA/hfi1: Move grh_required into update_sm_ah
grh_required is intended to be a global setting where all AV's will
require a GRH, not just the sm_lid. Move the special logic to the creation
of the SM AH.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Jason Gunthorpe [Wed, 4 Jul 2018 12:57:48 +0000 (15:57 +0300)]
RDMA: Fix storage of PortInfo CapabilityMask in the kernel
The internal flag IP_BASED_GIDS was added to a field that was being used
to hold the port Info CapabilityMask without considering the effects this
will have. Since most drivers just use the value from the HW MAD it means
IP_BASED_GIDS will also become set on any HW that sets the IBA flag
IsOtherLocalChangesNoticeSupported - which is not intended.
Fix this by keeping port_cap_flags only for the IBA CapabilityMask value
and store unrelated flags externally. Move the bit definitions for this to
ib_mad.h to make it clear what is happening.
To keep the uAPI unchanged define a new set of flags in the uapi header
that are only used by ib_uverbs_query_port_resp.port_cap_flags which match
the current flags supported in rdma-core, and the values exposed by the
current kernel.
Fixes:
b4a26a27287a ("IB: Report using RoCE IP based gids in port caps")
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Kamal Heib [Mon, 9 Jul 2018 19:21:03 +0000 (22:21 +0300)]
RDMA/ipoib: Fix return code from ipoib_cm_dev_init
The proper return code is -EOPNOTSUPP and not -ENOSYS when the function
isn't supported, also make sure to return the right error code
from ipoib_transport_dev_init() when ipoib_cm_dev_init() is supported.
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Parav Pandit [Sun, 8 Jul 2018 10:41:17 +0000 (13:41 +0300)]
IB/core: Simplify check for RoCE route resolve
roce_resolve_route_from_path() resolves the route based on the netdevice
of the GID attribute, therefore there is no point in checking again if
the route is resolved matches the same interface it arrived.
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Parav Pandit [Sun, 8 Jul 2018 10:40:30 +0000 (13:40 +0300)]
IB/mlx5: Honor cnt_set_id_valid flag instead of set_id
It is incorrect to depend on set_id value to know if counters were
allocated or not. set_id_valid field is set to true when counters
were allocated. Therefore, use set_id_valid while deciding to
free counters.
Cc: <stable@vger.kernel.org> # 4.15
Fixes:
aac4492ef23a ("IB/mlx5: Update counter implementation for dual port RoCE")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Daniel Jurgens <danielj@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Leon Romanovsky [Sun, 8 Jul 2018 09:55:43 +0000 (12:55 +0300)]
RDMA/mlx5: Remove unused port number parameter
Clean up a little bit code to drop unused port_num parameter.
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Jason Gunthorpe [Fri, 6 Jul 2018 17:42:03 +0000 (11:42 -0600)]
IB/uverbs: Do not use uverbs_cmd_mask in the ioctl path
Instead we are now checking the function pointers directly. Get rid of
both cases in ioctl and drop the nonsense idea that destroy can fail.
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Jann Horn [Fri, 6 Jul 2018 20:48:03 +0000 (22:48 +0200)]
IB/mlx5: fix uaccess beyond "count" in debugfs read/write handlers
In general, accessing userspace memory beyond the length of the supplied
buffer in VFS read/write handlers can lead to both kernel memory corruption
(via kernel_read()/kernel_write(), which can e.g. be triggered via
sys_splice()) and privilege escalation inside userspace.
In this case, the affected files are in debugfs (and should therefore only
be accessible to root), and the read handlers check that *pos is zero
(meaning that at least sys_splice() can't trigger kernel memory
corruption). Because of the root requirement, this is not a security fix,
but rather a cleanup.
For the read handlers, fix it by using simple_read_from_buffer() instead
of custom logic. Add min() calls to the write handlers.
Fixes:
4a2da0b8c078 ("IB/mlx5: Add debug control parameters for congestion control")
Fixes:
e126ba97dba9 ("mlx5: Add driver for Mellanox Connect-IB adapters")
Signed-off-by: Jann Horn <jannh@google.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Fri, 6 Jul 2018 21:27:42 +0000 (14:27 -0700)]
RDMA/rw: Fix rdma_rw_ctx_signature_init() kernel-doc header
Fixes:
0e353e34e1e7 ("IB/core: add RW API support for signature MRs")
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Fri, 6 Jul 2018 17:28:27 +0000 (10:28 -0700)]
RDMA/cxgb4: Make c4iw_poll_cq_one() easier to analyze
Introduce the function __c4iw_poll_cq_one() such that c4iw_poll_cq_one()
becomes easier to analyze for static source code analyzers. This patch
avoids that sparse reports the following:
drivers/infiniband/hw/cxgb4/cq.c:401:36: warning: context imbalance in 'c4iw_flush_hw_cq' - unexpected unlock
drivers/infiniband/hw/cxgb4/cq.c:824:9: warning: context imbalance in 'c4iw_poll_cq_one' - different lock contexts for basic block
Compile-tested only.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Steve Wise <swise@chelsio.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Fri, 6 Jul 2018 17:27:06 +0000 (10:27 -0700)]
RDMA/cxgb3: Make iwch_poll_cq_one() easier to analyze
Introduce the function __iwch_poll_cq_one() to make iwch_poll_cq_one()
easier to analyze for static source code analyzers. This patch avoids
that sparse reports the following:
drivers/infiniband/hw/cxgb3/iwch_cq.c:187:9: warning: context imbalance in 'iwch_poll_cq_one' - different lock contexts for basic block
Compile-tested only.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Steve Wise <swise@chelsio.com>
Acked-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Fri, 6 Jul 2018 16:45:32 +0000 (09:45 -0700)]
RDMA/rxe: Simplify the error handling code in rxe_create_ah()
This patch not only simplifies the error handling code in rxe_create_ah()
but also removes the dead code that was left behind by commit
47ec38666210
("RDMA: Convert drivers to use sgid_attr instead of sgid_index").
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Reviewed-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Thu, 5 Jul 2018 23:02:00 +0000 (16:02 -0700)]
IB/iser: Remove set-but-not-used variables
This patch does not change any functionality.
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Cc: Max Gurtovoy <maxg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Bart Van Assche [Thu, 5 Jul 2018 17:52:25 +0000 (10:52 -0700)]
RDMA/ocrdma: Remove a set-but-not-used variable
Signed-off-by: Bart Van Assche <bart.vanassche@wdc.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>