RDMA/nldev: provide detailed MR information

Implement the RDMA nldev netlink interface for dumping detailed
MR information.

Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 4e2b231..873b7aa 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -1622,6 +1622,7 @@ int ib_dereg_mr(struct ib_mr *mr)
 	struct ib_pd *pd = mr->pd;
 	int ret;
 
+	rdma_restrack_del(&mr->res);
 	ret = mr->device->dereg_mr(mr);
 	if (!ret)
 		atomic_dec(&pd->usecnt);
@@ -1658,6 +1659,8 @@ struct ib_mr *ib_alloc_mr(struct ib_pd *pd,
 		mr->uobject = NULL;
 		atomic_inc(&pd->usecnt);
 		mr->need_inval = false;
+		mr->res.type = RDMA_RESTRACK_MR;
+		rdma_restrack_add(&mr->res);
 	}
 
 	return mr;