IB: Correct MR length field to be 64-bit
authorParav Pandit <parav@mellanox.com>
Sun, 24 Sep 2017 18:46:31 +0000 (21:46 +0300)
committerDoug Ledford <dledford@redhat.com>
Mon, 25 Sep 2017 15:47:23 +0000 (11:47 -0400)
commitedd31551148c09608feee6b8756ad148d550ee3b
treed584b00f8d035cda6a28ab7733b2a4ebfb2032f7
parent73827a605bbd7cebef4cfd1261e497246a82a0e7
IB: Correct MR length field to be 64-bit

The ib_mr->length represents the length of the MR in bytes as per
the IBTA spec 1.3 section 11.2.10.3 (REGISTER PHYSICAL MEMORY REGION).

Currently ib_mr->length field is defined as only 32-bits field.
This might result into truncation and failed WRs of consumers who
registers more than 4GB bytes memory regions and whose WRs accessing
such MRs.

This patch makes the length 64-bit to avoid such truncation.

Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Chuck Lever <chuck.lever@oracle.com>
Cc: Faisal Latif <faisal.latif@intel.com>
Fixes: 4c67e2bfc8b7 ("IB/core: Introduce new fast registration API")
Signed-off-by: Ilya Lesokhin <ilyal@mellanox.com>
Signed-off-by: Parav Pandit <parav@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
drivers/infiniband/hw/nes/nes_verbs.c
drivers/infiniband/ulp/iser/iser_memory.c
include/rdma/ib_verbs.h
net/sunrpc/xprtrdma/frwr_ops.c