Abstract: Provided are a method, system, and program for managing congestion in a network controller, which in one embodiment, substantially all packets having an assigned priority value below a selected priority level are culled. In another embodiment, selected flows of packets into a network controller are culled at selected culling rates. In one example, a selected flow may be drastically culled. In another example, all flows may be culled at a certain rate which does not exceed a maximum for each flow. In another example, culling techniques may be combined.

Abstract: Provided are a method, system, and program implemented by a device driver executing in a computer for handling interrupts from an associated device, wherein the device driver is capable of interfacing with the associated device. The device driver periodically monitors usage of the processors in the system and pins a processor to execute the interrupt handler of the device driver based upon the monitored usage. If the usage of the pinned processor exceeds that of one or more of the other processors, the device driver may pin the interrupt handlers to a different, lower utilized processor.

Abstract: Provided are a method, system, and program for processing packets of data. An available packet buffer in memory is allocated to a received packet, wherein the received packet is stored in the allocated packet buffer. A determination is made as to whether a number of available packet buffers is less than a first threshold. A further determination is made as to whether the number of available packet buffers is less than a second threshold if the number of available packet buffers is not less than the first threshold. An operation is initiated to copy the received packet from the allocated packet buffer to a copy buffer if the number of available packet buffers is less than the second threshold.

Abstract: Provided is a method and system for managing data processing rates at a network adapter using a temperature sensor. A temperature of a component in the adapter transmitting data over a network is measured. A rate at which data is processed in the adapter over the network is reduced in response to determining that the measured temperature exceeds a threshold.

Abstract: In some embodiments, a method is provided for transmitting packet headers in a network adapter across a network. In this embodiment memory protocol headers and application data into packet buffers are stored on a host. On the network adapter a MAC header storing in a cache. The stored packet buffers and stored MAC header are transmitted across a network thereby reducing DMA requests.

Abstract: An interrupt processing apparatus, system, and article including a machine-accessible medium, along with a method of processing interrupts, implement interrupt processing in an efficient, parallel manner that reduces average interrupt latency. In one embodiment, the apparatus may include an interrupt receiver coupled to a plurality of interrupt handlers which respond to uniquely identified interrupting events. Responses may occur in an overlapping fashion in a multi-threaded environment. The system may include a processor coupled to a local memory and an interrupt receiver. Interrupt handlers, which may be coupled to the interrupt receiver, process uniquely identified interrupts. The method may include receiving multiple interrupts and executing corresponding interrupt handlers scheduled in response to receipt of the interrupts, with each handler being uniquely adapted to service a particular interrupting event.

Abstract: Provided are a method, system, and program for processing packets of data. An available packet buffer in memory is allocated to a received packet, wherein the received packet is stored in the allocated packet buffer. A determination is made as to whether a number of available packet buffers is less than a first threshold. A further determination is made as to whether the number of available packet buffers is less than a second threshold if the number of available packet buffers is not less than the first threshold. An operation is initiated to copy the received packet from the allocated packet buffer to a copy buffer if the number of available packet buffers is less than the second threshold.

Abstract: An arrangement is provided for selective completion indication of controller events. Data to be transmitted is read and transmitted upon receiving a request for transmission. A completion indication assiciated with the status of the transmission is returned only when a request for the completion indication is received.

Abstract: An interrupt processing apparatus, system, and article including a machine-accessible medium, along with a method of processing interrupts, implement interrupt processing in an efficient, parallel manner that reduces average interrupt latency. In one embodiment, the apparatus may include an interrupt receiver coupled to a plurality of interrupt handlers which respond to uniquely identified interrupting events. Responses may occur in an overlapping fashion in a multi-threaded environment. The system may include a processor coupled to a local memory and an interrupt receiver. Interrupt handlers, which may be coupled to the interrupt receiver, process uniquely identified interrupts. The method may include receiving multiple interrupts and executing corresponding interrupt handlers scheduled in response to receipt of the interrupts, with each handler being uniquely adapted to service a particular interrupting event.

Abstract: A method for determining if a cable is present at a network connection, and adjusting a power signal to the network connection depending upon whether or not a cable is present is disclosed.

Abstract: An arrangement is provided for ingress throttling via adaptive interrupt delay scheduling. When packets are received, a receive interrupt is issued with a delay determined based on the backlog information of an associated host, gathered from the number of packets returned from the host after the completion of processing previously delivered packets.

Abstract: Systems and methods for dynamically tuning the interrupt delay of a network adapter in response to variations in incoming network traffic loads. As incoming network traffic loads increase, the interrupt delay may be increased to permit an interrupt handler to “clean up” a greater number of packets with a single interrupt. Conversely, as incoming network traffic loads decrease, the interrupt delay may be decreased to expedite execution of the interrupt handler to “clean up” received packets. By monitoring incoming network traffic conditions, the duration of the interrupt delay of the network adapter can be optimized to efficiently receive incoming packets without excessive processor utilization and without poor response latency.

Abstract: A driver having an interrupt service routine including an interrupt handler and at least two deferred procedure calls. Each of the at least two deferred procedure calls is associated with a particular interrupt event or type of interrupt event. If multiple interrupt events occur, the interrupt events may be concurrently processed on separate deferred procedure calls, resulting in a substantially reduced interrupt handling latency.

Abstract: In some embodiments, a method is provided for transmitting packet headers in a network adapter across a network. In this embodiment memory protocol headers and application data into packet buffers are stored on a host. On the network adapter a MAC header storing in a cache. The stored packet buffers and stored MAC header are transmitted across a network thereby reducing DMA requests.