Sun Microsystems, Inc.

Oracle America, Inc.

Cahya Adi Masputra

Kacheong Poon

Sunay Tripathi

Hsiao-Keng Jerry Chu

Thirumalai Srinivasan

Francesco DiMambro

Bruce W Curtis

A system for atomic file transfer operations over connectionless network protocols includes a processor and a memory coupled to the processor. The memory contains program instructions executable by the processor to implement an operating system including a system call interface for sending one or more data files to another system over a network via a connectionless network protocol. In response to an invocation of the system call by an application, the operating system is configured to send the one or more data files to the other system over the network without the application copying contents of the data files into application address space.

System and method for atomic file transfer operations over connectionless network protocols

A method for receiving network communication at a host is provided. The host has a network interface card (NIC) for receiving the network communication from a network. Data is requested through an application. A set of buffers (e.g., A, B, C, . . . ) is posted to system memory. Information regarding the set of buffers is passed to an adaptation layer. The adaptation layer is interposed between a socket layer and a transport layer of the protocol stack. The set of buffers identified in the adaptation layer is assigned expected sequence numbers (e.g., SN, SNSN. . . ) for a sequence of incoming data (e.g., S, S, S, . . . ). The adaptation layer reshuffles data of the sequence of incoming data to the set of buffers according to the expected sequence numbers. The expected sequence numbers are consecutively ordered to ensure that the sequence of incoming data in the ordered sequence is placed to the set of buffers according to the expected sequence numbers.

Adapting network communication to asynchronous interfaces and methods

A system for socket-level packet scheduling over connectionless network protocols includes a processor and a memory coupled to the processor. The memory contains program instructions executable by the processor to implement an operating system including a packet scheduler for scheduling data transmissions via a connectionless network protocol. In response to a request from an application specifying one or more desired performance metrics for a data transfer via the connectionless network protocol, the packet scheduler is configured to schedule the data transfer in accordance with the one or more desired performance metrics.

Socket level packet scheduling for connectionless protocols

Embodiments of the present invention provide for reliable receipt of data packets by a network device. The present invention also provides a receive thread for receiving data packets. The present invention also provides a drainer thread for processing packets according to an applicable protocol. As a result, the network device is capable of receiving and processing data packets at an increased rate.

Data communication execution thread

A multidata framework is provided to allow multiple payload buffers to be associated with a single multidata message. In the multidata framework of the present invention, a number of payload buffers are associated with the multidata following allocation of the multidata header buffer. The number of payload buffers can reside at disjoint virtual address locations in memory. Each payload buffer is assigned an index for identification purposes. A number of packets are defined to represent the multidata message. Each packet includes a header portion and a payload portion. The payload portion is defined as a set of payload spans. Each payload span is mapped to the payload portion of the appropriate packet by an appropriate payload buffer index and address range in the appropriate payload buffer. Thus, a packet's payload portion can include payload spans that are located at disjoint virtual address location in memory.

Method and system for associating multiple payload buffers with multidata message

A kernel data transfer method and system for transmitting multiple packets of data in a single block of data presented by application programs to the kernel's network subsystem for processing in accordance with data transfer parameters set by the application program. The multi-packet transmit system includes logic that allows header information of the multiple packets of data to be generated in a single buffer and appended to a second buffer containing the data packets to be transmitted through the network stack. The multi-data transmit system allows a device driver to amortize the input/output memory management related overhead across a number of packets. With some assistance from the network stack, the device driver needs to only perform the necessary IOMMU operations on two contiguous memory blocks representing the header information and the data payload of multiple packets during each transmit call.

System and method for a multi-packet data link layer data transmission

A kernel data transfer optimizing system for dynamically subdividing data blocks which are presented by application programs to be transferred to the kernel's network subsystem for processing into blocks of data in accordance with data transfer parameters set by the application program. The data transfer optimizing system includes logic that allows a programmer to dynamically adjust the size of data buffers that store the data blocks of the application program data in the kernel according to the application program parameters prior to transmitting the data blocks in the transport layer of the network subsystem. The data transfer optimizer allows the kernel to process data in large chunks thereby reducing the processing time of data presented to the network subsystem.

System and method for an efficient transport layer transmit interface

Embodiments of the present invention provide a novel method of implementing a network communication protocol. In one embodiment, the state of the network communication process is determined based upon one or more conditions. The protocol stack is then executed as a single thread of execution if the network communication process is in a first state. Alternatively, the protocol stack is executed as a receive thread of execution and a drainer thread of execution if the network communication process is in a second state.

Load-balancing utilizing one or more threads of execution for implementing a protocol stack

Embodiments of the present invention are directed to a method and system for processing data to be transmitted in a transmission medium, including storing in memory a segment of data to be transmitted where the segment of data is larger than the largest size data packet allowed for transmission by the transmission medium. A socket layer batch processes the segment to produce an array of linked data blocks where each data block is smaller than the largest transmission size of the TCP layer. A TCP layer batch processes the array to add a first header to each block of the array of linked data blocks. An IP layer batch processes the array to add a second header to each block of the array of linked data blocks. The socket layer then identifies blocks of the array to a communication subsystem for individual packet communication over the transmission medium.

Method and system for transmitting packet chains

Methods and systems consistent with the present invention provide a mechanism for accepting extended amounts of data in a layered network protocol. The methods and systems thus allow the network protocol to more efficiently receive data and forward the data to the correct entity. As a result, the programs experience greater network data throughput. The methods and systems may be implemented in widely accepted Internet Protocol (IP) and Transmission Control Protocol (TCP) networks.

Methods and systems for efficient multi-packet data processing in a layered network protocol

Embodiments of the present invention provide for multi-data receiving and processing by a network communication protocol. The present invention aggregates multiple data packets destined for the same application. The present invention also provides for header/payload splitting. The present invention also provides for the separate processing of aggregated headers and aggregated payloads. As a result, per-packet processing costs are reduced and data locality is increased.

Multi-data receive processing according to a data communication protocol

Embodiments of the present invention provide for execution of a protocol in a multi-processor network device. In one embodiment, a hash function is applied to one or more fields of the data packet header to determine a unique index. A hash table is then queried, whereby data indicating one or more threads corresponding to said unique index is extracted. An available thread of execution, which has previously handled packet in the same receive stream, may thus be selected from a pool of threads. The selected thread of execution is then dispatched to provide for receive processing of the present data packet.

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Millbrae, CA, United States of America

Cahya Adi Masputra