IB/mlx4: Implement query SRQ

Signed-off-by: Dotan Barak <dotanb@mellanox.co.il>
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/mlx4/srq.c b/drivers/infiniband/hw/mlx4/srq.c
index 12fac1c8989..408748fb528 100644
--- a/drivers/infiniband/hw/mlx4/srq.c
+++ b/drivers/infiniband/hw/mlx4/srq.c
@@ -240,6 +240,24 @@ int mlx4_ib_modify_srq(struct ib_srq *ibsrq, struct ib_srq_attr *attr,
         return 0;
 }
 
+int mlx4_ib_query_srq(struct ib_srq *ibsrq, struct ib_srq_attr *srq_attr)
+{
+        struct mlx4_ib_dev *dev = to_mdev(ibsrq->device);
+        struct mlx4_ib_srq *srq = to_msrq(ibsrq);
+        int ret;
+        int limit_watermark;
+
+        ret = mlx4_srq_query(dev->dev, &srq->msrq, &limit_watermark);
+        if (ret)
+                return ret;
+
+        srq_attr->srq_limit = be16_to_cpu(limit_watermark);
+        srq_attr->max_wr    = srq->msrq.max - 1;
+        srq_attr->max_sge   = srq->msrq.max_gs;
+
+        return 0;
+}
+
 int mlx4_ib_destroy_srq(struct ib_srq *srq)
 {
         struct mlx4_ib_dev *dev = to_mdev(srq->device);