Qlogic Corporation

Ying Ping Lok

Shashank Pandhare

Arun Mittal

Ronald M Mercer

David R Eaves

Sribardhan Patnaik

Fengyan Shao

Lingling Polican

Michael Ivan Thompson

David C Somayajulu

Thanh N Nguyen

Zhenghao Zhang

Method and system for managing a maximum payload size (MPS) between a host system and an adapter is provided. The method includes storing a host maximum payload size (MPS) value of the host system as an adapter MPS value for the adapter operationally coupled to the host system; storing a host identifier at the adapter for identifying the host system; setting an adapter MPS value to the host MPS value; resetting the adapter MPS value to a default value after an event; and restoring the adapter MPS value to the host MPS value when the host identifier stored at the adapter matches with a host identifier value stored by the host system.

System and method to restore maximum payload size in a network adapter

System and method for managing a virtual adapter instance associated with a physical adapter is provided. The method includes configuring a monitoring module for detecting change in configuration of the virtual adapter instance; detecting if the configuration has changed for the virtual adapter instance, at any given time; comparing a changed configuration with a previous configuration of the virtual adapter instance; installing a new virtual adapter instance, if new information is present in the changed configuration; and uninstalling the virtual adapter instance, if information from the previous configuration was removed.

System and methods for managing virtual adapter instances

A method and system for processing a received network packet includes providing a network adapter using a predetermined number of buffer sets in a buffer queue. A buffer queue with a plurality of buffer sets less than the predetermined number of buffer sets is provided. Each buffer set includes a plurality of buffers to store and retrieve data indicative of the storage location of the received packet. A buffer set is assigned to store data. After all the data from the assigned buffer set is retrieved, the buffer set is released to the buffer queue for subsequent assignment.

Memory management in a network adapter

The present embodiments provide a mechanism for selecting from among a plurality of initialization sequences to be executed as part of system startup. The present embodiments thus address the problem of certain initialization sequences not executing because they apply to the same function as another initialization sequence that is positioned ahead of the subject initialization sequence in storage of an adapter.

Selectable initialization for adapters

A method and system for concurrent processing transmit requests uses transmit queue including a circular buffer and a queue state including a producer index, a consumer index, and a producer list. Producer processes write to the circular buffer concurrently. The producer list signals which portion of the circular buffer are allocated to each of the producer processes.

Concurrent transmit processing

Method and system for processing storage and network packets is provided. The system includes a computing system executing a storage application for sending an input/output request for communicating with a storage device, the storage application transmits the I/O request to a storage driver that includes (a) an operating system interface to communicate with an operating system executed by the computing system and (b) a storage protocol interface that executes operations related to the storage protocol for processing the I/O request; wherein the storage driver sends the I/O request to a network driver that encapsulates the I/O request into a combined network and storage packet; and the encapsulated network and storage packet is transmitted via a network link using a network protocol.

Method and system for managing network and storage data

Method and system for managing boot trace information is provided. The system includes a utility module executed by a computing system processor that enables boot trace collection in a host bus adapter, wherein the utility module enables boot trace collection for different software modules and boot trace information is stored in a designated area of a non-volatile memory, if hardware initialization fails; if firmware loading is unacceptable; if BIOS initialization is unacceptable; and if target discovery is improper.

Method and system for managing boot trace information in host bus adapters

Method and system for managing interrupts originating from multiple sources is provided. The method includes assigning interrupt sources to a group; notifying an adapter of interrupt groups; identifying each interrupt group; writing a first interrupt to an interrupt module, where the interrupt occurs from a first source of the multiple sources; monitoring for a second interrupt; suspending the second interrupt until the first interrupt is processed, if the second interrupt is requested from the first source; and processing the second interrupt, if the second interrupt occurs from a source other than the first source.

System and method for managing interrupts

A method and system for managing storage devices is provided. The method includes determining during a boot process if a logical unit number ('LUN') key exists; and proceeding to a phaseof the boot process if the LUN key does not exist or proceeding to a phaseof the boot process if the LUN key does exist.

Method and system for managing storage area networks

A method for sending/receiving a TCP segment is provided. The sending process includes, determining if a TCP port can be offloaded; saving a host system's time stamp value; replacing a host system's time stamp value with a TCP offload engine ('TOE') adapter's time stamp value; and sending the TCP segment via the TOE adapter. The receiving process includes verifying if a TCP port is being offloaded by a host system to the TOE adpter; retrieving the host system's time stamp value; and inserting the host system's time stamp value in the received TCP segment before the forwarding the received TCP segment to the host system.

Growing community of inventors

Ladera Ranch, CA, United States of America

Ying Ping Lok