AuxXxilium/linux_dsm_epyc7002
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d623500b3c
linux_dsm_epyc7002/drivers/infiniband/hw
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Michael J. Ruhl d623500b3c IB/hfi1: Fix context recovery when PBC has an UnsupportedVL 
If a packet stream uses an UnsupportedVL (virtual lane), the send
engine will not send the packet, and it will not indicate that an
error has occurred.  This will cause the packet stream to block.

HFI has 8 virtual lanes available for packet streams.  Each lane can
be enabled or disabled using the UnsupportedVL mask.  If a lane is
disabled, adding a packet to the send context must be disallowed.

The current mask for determining unsupported VLs defaults to 0 (allow
all).  This is incorrect.  Only the VLs that are defined should be
allowed.

Determine which VLs are disabled (mtu == 0), and set the appropriate
unsupported bit in the mask.  The correct mask will allow the send
engine to error on the invalid VL, and error recovery will work
correctly.

Cc: <stable@vger.kernel.org> # 4.9.x+
Fixes: 7724105686 ("IB/hfi1: add driver files")
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Reviewed-by: Lukasz Odzioba <lukasz.odzioba@intel.com>
Signed-off-by: Michael J. Ruhl <michael.j.ruhl@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2018-09-20 19:24:51 -06:00
..
bnxt_re bnxt_re: Fix couple of memory leaks that could lead to IOMMU call traces 2018-09-05 16:08:41 -06:00
cxgb3 RDMA/providers: Remove pointless functions 2018-07-30 20:31:54 -06:00
cxgb4 iw_cxgb4: only allow 1 flush on user qps 2018-09-04 15:07:56 -06:00
hfi1 IB/hfi1: Fix context recovery when PBC has an UnsupportedVL 2018-09-20 19:24:51 -06:00
hns Merge branch 'linus/master' into rdma.git for-next 2018-08-16 14:21:29 -06:00
i40iw RDMA/providers: Remove pointless functions 2018-07-30 20:31:54 -06:00
mlx4 RDMA/mlx4: Ensure that maximal send/receive SGE less than supported by HW 2018-09-06 13:16:12 -06:00
mlx5 mm, oom: distinguish blockable mode for mmu notifiers 2018-08-22 10:52:44 -07:00
mthca RDMA/providers: Fix return value from create_srq callbacks 2018-07-30 20:29:45 -06:00
nes RDMA/providers: Remove pointless functions 2018-07-30 20:31:54 -06:00
ocrdma RDMA/providers: Remove pointless functions 2018-07-30 20:31:54 -06:00
qedr Linux 4.18 2018-08-16 13:12:00 -06:00
qib RDMA: Constify the argument of the work request conversion functions 2018-07-30 20:00:20 -06:00
usnic RDMA, core and ULPs: Declare ib_post_send() and ib_post_recv() arguments const 2018-07-30 20:09:34 -06:00
vmw_pvrdma RDMA/providers: Remove pointless functions 2018-07-30 20:31:54 -06:00
Makefile