net/mlx4_core: Disable HW timestamping for VFs

Disable timestamp capability on virtual functions.

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx4/fw.c b/drivers/net/ethernet/mellanox/mlx4/fw.c
index 6776c257bd34..1f6c3e9128ef 100644
--- a/drivers/net/ethernet/mellanox/mlx4/fw.c
+++ b/drivers/net/ethernet/mellanox/mlx4/fw.c
@@ -784,6 +784,11 @@ int mlx4_QUERY_DEV_CAP_wrapper(struct mlx4_dev *dev, int slave,
         flags &= ~MLX4_DEV_CAP_FLAG_MEM_WINDOW;
         MLX4_PUT(outbox->buf, flags, QUERY_DEV_CAP_EXT_FLAGS_OFFSET);
 
+        /* For guests, disable timestamp */
+        MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_CQ_TS_SUPPORT_OFFSET);
+        field &= 0x7f;
+        MLX4_PUT(outbox->buf, field, QUERY_DEV_CAP_CQ_TS_SUPPORT_OFFSET);
+
         /* For guests, report Blueflame disabled */
         MLX4_GET(field, outbox->buf, QUERY_DEV_CAP_BF_OFFSET);
         field &= 0x7f;