Commit Graph

766671 Commits

Author SHA1 Message Date
Bart Van Assche
9b32a59687 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>
2018-07-24 16:06:36 -06:00
Bart Van Assche
71347b0c64 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>
2018-07-24 16:06:36 -06:00
Bart Van Assche
e01a76743a 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>
2018-07-24 16:06:36 -06:00
Bart Van Assche
604dbdc4a7 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>
2018-07-24 16:06:36 -06:00
Bart Van Assche
4b4671a0f2 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>
2018-07-24 16:06:36 -06:00
Bart Van Assche
1fec77bf8f 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>
2018-07-24 16:06:36 -06:00
Bart Van Assche
bb039a870c 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>
2018-07-24 16:06:36 -06:00
Zhu Yanjun
536ca245c5 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>
2018-07-24 15:28:31 -06:00
Wei Yongjun
99a7e2bf70 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: 515ed4f3aa ("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>
2018-07-24 14:56:37 -06:00
Yishai Hadas
cb80fb1892 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>
2018-07-24 14:33:52 -06:00
Yishai Hadas
6346f0bfa0 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>
2018-07-24 14:03:56 -06:00
Yishai Hadas
d4be3f4466 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>
2018-07-24 14:03:56 -06:00
Yishai Hadas
3226944124 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>
2018-07-24 14:03:49 -06:00
Yishai Hadas
6cd080a674 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>
2018-07-24 13:34:55 -06:00
Yishai Hadas
fd44e3853c 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>
2018-07-24 13:34:37 -06:00
Jason Gunthorpe
eda98779f7 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>
2018-07-24 13:10:23 -06:00
Yishai Hadas
664000b6bb 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>
2018-07-24 08:51:20 +03:00
Yishai Hadas
2aada6c0c9 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>
2018-07-24 08:50:30 +03:00
Jason Gunthorpe
4fca037783 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>
2018-07-23 15:45:34 -06:00
Bart Van Assche
2bd2e98a78 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>
2018-07-23 15:41:18 -06:00
Bart Van Assche
acd4307a21 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>
2018-07-23 15:36:23 -06:00
Kamal Heib
aa09ea6e6b RDMA/mlx5: Remove set but not used variables
Remove "uctx" and "pa" variables that were set but not used.

Fixes: a8b92ca1b0 ("IB/mlx5: Introduce DEVX")
Fixes: 8f06228733 ("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>
2018-07-23 15:34:54 -06:00
Jan Dakinevich
259e19145e 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: Håkon Bugge <haakon.bugge@oracle.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-07-23 15:08:20 -06:00
Eran Ben Elisha
048f31437a 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>
2018-07-18 14:33:25 -07:00
Tariq Toukan
e2abdcf1d2 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>
2018-07-18 14:33:25 -07:00
Roi Dayan
d34c6efc59 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>
2018-07-18 14:33:25 -07:00
Noa Osherovich
0f4039104e net/mlx5: Add missing SET_DRIVER_VERSION command translation
When translating command opcodes to a string, SET_DRIVER_VERSION
command was missing.

Fixes: 42ca502e17 ('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>
2018-07-18 14:33:25 -07:00
Max Gurtovoy
a451733909 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>
2018-07-18 14:33:25 -07:00
Jianbo Liu
8da6fe2a18 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>
2018-07-18 14:33:25 -07:00
Eran Ben Elisha
5e022dd353 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>
2018-07-18 14:33:25 -07:00
Feras Daoud
eff8ea8f24 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>
2018-07-18 14:33:25 -07:00
Jason Gunthorpe
c012691508 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>
2018-07-13 12:18:55 -06:00
Leon Romanovsky
1215cb7c88 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>
2018-07-13 12:15:05 -06:00
Leon Romanovsky
40ddacf2dd 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>
2018-07-13 12:09:57 -06:00
Bart Van Assche
6869e0004f 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: 63cf1a902c ("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>
2018-07-13 11:58:45 -06:00
Bart Van Assche
847462de3a 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: db7683d7de ("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>
2018-07-13 11:55:32 -06:00
Leon Romanovsky
05f58ceba1 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: 1ee47ab3e8 ("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>
2018-07-13 11:54:50 -06:00
Leon Romanovsky
ffaf58def0 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>
2018-07-13 11:54:50 -06:00
Raju Rangoju
65ca8d9670 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>
2018-07-13 11:52:55 -06:00
Bart Van Assche
15039efadd 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>
2018-07-11 14:21:52 -06:00
Bart Van Assche
522628ed1a 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>
2018-07-11 14:20:45 -06:00
oulijun
e8e8b65224 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>
2018-07-11 14:09:25 -06:00
oulijun
4db134a3dd 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>
2018-07-11 14:09:25 -06:00
oulijun
ded58ff987 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>
2018-07-11 14:09:25 -06:00
oulijun
6b63597d35 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>
2018-07-11 14:09:25 -06:00
oulijun
0576cbde14 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>
2018-07-11 14:09:25 -06:00
Jann Horn
31e33a5b41 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: e126ba97db ("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>
2018-07-11 12:08:57 -07:00
Bart Van Assche
beae9eb555 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>
2018-07-11 12:12:57 -06:00
Arnd Bergmann
07f3355df7 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>
2018-07-11 12:10:19 -06:00
Bart Van Assche
59b851dbf7 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>
2018-07-10 21:01:29 -06:00