IB/mlx5: Expose support for signature MR feature

Currently support only T10-DIF types of signature handover operations
(types 1|2|3).

Signed-off-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c
index ba3ecec7fa65..7b9c0782105e 100644
--- a/drivers/infiniband/hw/mlx5/main.c
+++ b/drivers/infiniband/hw/mlx5/main.c
@@ -273,6 +273,15 @@ static int mlx5_ib_query_device(struct ib_device *ibdev,
         if (flags & MLX5_DEV_CAP_FLAG_XRC)
                 props->device_cap_flags |= IB_DEVICE_XRC;
         props->device_cap_flags |= IB_DEVICE_MEM_MGT_EXTENSIONS;
+        if (flags & MLX5_DEV_CAP_FLAG_SIG_HAND_OVER) {
+                props->device_cap_flags |= IB_DEVICE_SIGNATURE_HANDOVER;
+                /* At this stage no support for signature handover */
+                props->sig_prot_cap = IB_PROT_T10DIF_TYPE_1 |
+                                      IB_PROT_T10DIF_TYPE_2 |
+                                      IB_PROT_T10DIF_TYPE_3;
+                props->sig_guard_cap = IB_GUARD_T10DIF_CRC |
+                                       IB_GUARD_T10DIF_CSUM;
+        }
 
         props->vendor_id           = be32_to_cpup((__be32 *)(out_mad->data + 36)) &
                 0xffffff;