Searched hist:eed7624552ca55c346a4e9ccaa9ab0723841aee6 (Results 1 – 1 of 1) sorted by relevance
| /openbmc/linux/drivers/infiniband/hw/mlx4/ |
| H A D | mad.c | diff eed7624552ca55c346a4e9ccaa9ab0723841aee6 Sun May 21 11:11:13 CDT 2017 Jack Morgenstein <jackm@dev.mellanox.co.il> RDMA/mlx4: Fix MAD tunneling when SRIOV is enabled
The cited patch added a type field to structures ib_ah and rdma_ah_attr.
Function mlx4_ib_query_ah() builds an rdma_ah_attr structure from the
data in an mlx4_ib_ah structure (which contains both an ib_ah structure
and an address vector).
For mlx4_ib_query_ah() to work properly, the type field in the contained
ib_ah structure must be set correctly.
In the outgoing MAD tunneling flow, procedure mlx4_ib_multiplex_mad()
paravirtualizes a MAD received from a slave and sends the processed
mad out over the wire. During this processing, it populates an
mlx4_ib_ah structure and calls mlx4_ib_query_ah().
The cited commit overlooked setting the type field in the contained
ib_ah structure before invoking mlx4_ib_query_ah(). As a result, the
type field remained uninitialized, and the rdma_ah_attr structure was
incorrectly built. This resulted in improperly built MADs being sent out
over the wire.
This patch properly initializes the type field in the contained ib_ah
structure before calling mlx4_ib_query_ah(). The rdma_ah_attr structure
is then generated correctly.
Fixes: 44c58487d51a ("IB/core: Define 'ib' and 'roce' rdma_ah_attr types")
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
|