diff options
| author | Parav Pandit <parav@mellanox.com> | 2017-09-24 21:46:31 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-09-25 11:47:23 -0400 |
| commit | edd31551148c09608feee6b8756ad148d550ee3b (patch) | |
| tree | d584b00f8d035cda6a28ab7733b2a4ebfb2032f7 /include/rdma | |
| parent | 73827a605bbd7cebef4cfd1261e497246a82a0e7 (diff) | |
| download | linux-edd31551148c09608feee6b8756ad148d550ee3b.tar.bz2 | |
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>
Diffstat (limited to 'include/rdma')
| -rw-r--r-- | include/rdma/ib_verbs.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index bbb5f54db882..e8608b2dc844 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -1739,7 +1739,7 @@ struct ib_mr { u32 lkey; u32 rkey; u64 iova; - u32 length; + u64 length; unsigned int page_size; bool need_inval; union { |