CA2119151A1 - Apparatus for automatic initiation of data transmission - Google Patents

Apparatus for automatic initiation of data transmission

Info

Publication number
CA2119151A1
CA2119151A1 CA002119151A CA2119151A CA2119151A1 CA 2119151 A1 CA2119151 A1 CA 2119151A1 CA 002119151 A CA002119151 A CA 002119151A CA 2119151 A CA2119151 A CA 2119151A CA 2119151 A1 CA2119151 A1 CA 2119151A1
Authority
CA
Canada
Prior art keywords
data
frame
transmit buffer
buffer
threshold
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002119151A
Other languages
French (fr)
Other versions
CA2119151C (en
Inventor
Brian Petersen
David R. Brown
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3Com Corp
Original Assignee
Brian Petersen
David R. Brown
3Com Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25444577&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2119151(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Brian Petersen, David R. Brown, 3Com Corporation filed Critical Brian Petersen
Publication of CA2119151A1 publication Critical patent/CA2119151A1/en
Application granted granted Critical
Publication of CA2119151C publication Critical patent/CA2119151C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9063—Intermediate storage in different physical parts of a node or terminal
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/10—Program control for peripheral devices
    • G06F13/12—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor
    • G06F13/124—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware is a sequential transfer control unit, e.g. microprocessor, peripheral processor or state-machine
    • G06F13/128—Program control for peripheral devices using hardware independent of the central processor, e.g. channel or peripheral processor where hardware is a sequential transfer control unit, e.g. microprocessor, peripheral processor or state-machine for dedicated transfers to a network
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/382—Information transfer, e.g. on bus using universal interface adapter
    • G06F13/385—Information transfer, e.g. on bus using universal interface adapter for adaptation of a particular data processing system to different peripheral devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/22—Traffic shaping
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/901—Buffering arrangements using storage descriptor, e.g. read or write pointers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9031—Wraparound memory, e.g. overrun or underrun detection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9063—Intermediate storage in different physical parts of a node or terminal
    • H04L49/9068—Intermediate storage in different physical parts of a node or terminal in the network interface card
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9063—Intermediate storage in different physical parts of a node or terminal
    • H04L49/9068—Intermediate storage in different physical parts of a node or terminal in the network interface card
    • H04L49/9073—Early interruption upon arrival of a fraction of a packet
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L49/00—Packet switching elements
    • H04L49/90—Buffering arrangements
    • H04L49/9063—Intermediate storage in different physical parts of a node or terminal
    • H04L49/9078—Intermediate storage in different physical parts of a node or terminal using an external memory or storage device
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/40—Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L43/00—Arrangements for monitoring or testing data switching networks
    • H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
    • H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
    • H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Security & Cryptography (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Communication Control (AREA)
  • Computer And Data Communications (AREA)
  • Information Transfer Systems (AREA)
  • Selective Calling Equipment (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)

Abstract

Early initiation of transmission of data in a network interface that includes a dedicated transmit buffer is provided in a system which includes logic for transferring frames of data composed by the host computer into the transmit buffer. The amount of data of a frame which is downloaded by the host to the transmit buffer is monitored to make a threshold determination of an amount of data of the frame resident in the transmit data buffer. The network interface controller includes logic for initiating transmission of the frame when the threshold determination indicates that a sufficient portion of the frame is resident in the transmit buffer, and prior to transfer of all of the data of the frame into the transmit buffer. The monitoring logic includes a threshold store, which is programmable by the host computer for storing a threshold value. Thus, the threshold value may be set by the host system to optimize performance in a given setting.
CA002119151A 1992-07-28 1993-07-27 Apparatus for automatic initiation of data transmission Expired - Lifetime CA2119151C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US07/920,893 1992-07-28
US07/920,893 US5434872A (en) 1992-07-28 1992-07-28 Apparatus for automatic initiation of data transmission
PCT/US1993/007060 WO1994002891A1 (en) 1992-07-28 1993-07-27 Apparatus for automatic initiation of data transmission

Publications (2)

Publication Number Publication Date
CA2119151A1 true CA2119151A1 (en) 1994-02-03
CA2119151C CA2119151C (en) 2001-05-01

Family

ID=25444577

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002119151A Expired - Lifetime CA2119151C (en) 1992-07-28 1993-07-27 Apparatus for automatic initiation of data transmission

Country Status (6)

Country Link
US (2) US5434872A (en)
EP (1) EP0606466A1 (en)
JP (2) JP3863912B2 (en)
AU (1) AU666769B2 (en)
CA (1) CA2119151C (en)
WO (1) WO1994002891A1 (en)

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US5434872A (en) 1995-07-18
EP0606466A1 (en) 1994-07-20
US5732094A (en) 1998-03-24
JPH06511585A (en) 1994-12-22
EP0606466A4 (en) 1994-04-29
AU4788193A (en) 1994-02-14
JP2006114030A (en) 2006-04-27
CA2119151C (en) 2001-05-01
AU666769B2 (en) 1996-02-22
JP3863912B2 (en) 2006-12-27
WO1994002891A1 (en) 1994-02-03

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