i40iw: Allocate a sdbuf per CQP WQE

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[ Upstream commit 100d6de2ce ]

Currently there is only one sdbuf per Control QP (CQP) for
programming Segment Descriptor (SD). If multiple SD work
requests are posted simultaneously, the sdbuf is reused
by all WQEs and new WQEs can corrupt previous WQEs sdbuf
leading to incorrect SD programming.

Fix this by allocating one sdbuf per CQP SQ WQE. When an
SD command is posted, it will use the corresponding sdbuf
for the WQE.

Fixes: 86dbcd0f12 ("i40iw: add file to handle cqp calls")
Signed-off-by: Chien Tin Tung <chien.tin.tung@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

This commit is contained in:

Chien Tin Tung 2017-11-21 16:18:30 -06:00 • committed by Greg Kroah-Hartman

parent 97ef3a5027

commit f10f5b89c1

2 changed files with 33 additions and 14 deletions

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43

drivers/infiniband/hw/i40iw/i40iw_ctrl.c

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4

drivers/infiniband/hw/i40iw/i40iw_d.h

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