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  1. 28 May, 2018 1 commit
    • Arnd Bergmann's avatar
      IB: Revert "remove redundant INFINIBAND kconfig dependencies" · 533d1dae
      Arnd Bergmann authored 
      Several subsystems depend on INFINIBAND_ADDR_TRANS, which in turn depends
on INFINIBAND. However, when with CONFIG_INIFIBAND=m, this leads to a
link error when another driver using it is built-in. The
INFINIBAND_ADDR_TRANS dependency is insufficient here as this is
a 'bool' symbol that does not force anything to be a module in turn.

fs/cifs/smbdirect.o: In function `smbd_disconnect_rdma_work':
smbdirect.c:(.text+0x1e4): undefined reference to `rdma_disconnect'
net/9p/trans_rdma.o: In function `rdma_request':
trans_rdma.c:(.text+0x7bc): undefined reference to `rdma_disconnect'
net/9p/trans_rdma.o: In function `rdma_destroy_trans':
trans_rdma.c:(.text+0x830): undefined reference to `ib_destroy_qp'
trans_rdma.c:(.text+0x858): undefined reference to `ib_dealloc_pd'

Fixes: 9533b292 ("IB: remove redundant INFINIBAND kconfig dependencies")
Signed-off-by: default avatarArnd Bergmann <arnd@arndb.de>
Acked-by: default avatarGreg Thelen <gthelen@google.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
      533d1dae
  3. 25 May, 2018 1 commit
    • Devesh Sharma's avatar
      RDMA/bnxt_re: Fix broken RoCE driver due to recent L2 driver changes · 6e04b103
      Devesh Sharma authored 
      The recent changes in Broadcom's ethernet driver(L2 driver) broke
RoCE functionality in terms of MSIx vector allocation and
de-allocation.

There is a possibility that L2 driver would initiate MSIx vector
reallocation depending upon the requests coming from administrator.
In such cases L2 driver needs to free up all the MSIx vectors
allocated previously and reallocate/initialize those.

If RoCE driver is loaded and reshuffling is attempted, there will be
kernel crashes because RoCE driver would still be holding the MSIx
vectors but L2 driver would attempt to free in-use vectors. Thus
leading to a kernel crash.

Making changes in roce driver to fix crashes described above.
As part of solution L2 driver tells RoCE driver to release
the MSIx vector whenever there is a need. When RoCE driver
get message it sync up with all the running tasklets and IRQ
handlers and releases the vectors. L2 driver send one more
message to RoCE driver to resume the MSIx vectors. L2 driver
guarantees that RoCE vector do not change during reshuffling.

Fixes: ec86f14e ("bnxt_en: Add ULP calls to stop and restart IRQs.")
Fixes: 08654eb2 ("bnxt_en: Change IRQ assignment for RDMA driver.")
Signed-off-by: default avatarDevesh Sharma <devesh.sharma@broadcom.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
      6e04b103
  5. 23 May, 2018 4 commits
  7. 15 May, 2018 1 commit
    • Lidong Chen's avatar
      IB/umem: Use the correct mm during ib_umem_release · 8e907ed4
      Lidong Chen authored 
      User-space may invoke ibv_reg_mr and ibv_dereg_mr in different threads.

If ibv_dereg_mr is called after the thread which invoked ibv_reg_mr has
exited, get_pid_task will return NULL and ib_umem_release will not
decrease mm->pinned_vm.

Instead of using threads to locate the mm, use the overall tgid from the
ib_ucontext struct instead. This matches the behavior of ODP and
disassociate in handling the mm of the process that called ibv_reg_mr.

Cc: <stable@vger.kernel.org>
Fixes: 87773dd5 ("IB: ib_umem_release() should decrement mm->pinned_vm from ib_umem_get")
Signed-off-by: default avatarLidong Chen <lidongchen@tencent.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
      8e907ed4
  9. 09 May, 2018 23 commits
  11. 03 May, 2018 8 commits
  13. 30 Apr, 2018 1 commit
  15. 27 Apr, 2018 1 commit
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