MLX4_RSS_QPC_FLAG_OFFSET
context->flags |= cpu_to_be32(1 << MLX4_RSS_QPC_FLAG_OFFSET);
context->flags = cpu_to_be32(7 << 16 | rss << MLX4_RSS_QPC_FLAG_OFFSET);
qp->qpc_flags & (1 << MLX4_RSS_QPC_FLAG_OFFSET)) {