1. A method, comprising: receiving, by a user space driver framework (UDF) library executing from a user space of a memory over an operating system kernel operated by a device driver executing from the user space, a kernel application programming interface (API) call from a device driver executing from the user space; determining that the operation comprises a privileged operation, wherein if the operation is non-privileged: performing, by the UDF library, an operation corresponding to the kernel API call, and detecting an interrupt and sending a notification of the interrupt via the file descriptor to the UDF library, wherein upon receiving the notification: scheduling by a scheduler an execution of an interrupt handling of the interrupt handling code of the device driver, wherein the interrupt handling code is a component of device driver configured to perform each one of: receiving a notification of an incoming message from a remote network node, and receiving a notification of a failure in firmware controlling a host bus adaptor (HBA).