Packet buffer apparatus and method

Details Packet buffer apparatus and method Packet buffer apparatus and method

2007-11-30

2010-10-19

Abdullahi, Salad (Department: 2457)

Electrical computers and digital processing systems: multicomput

Computer-to-computer direct memory accessing

C711S118000

Reexamination Certificate

active

07818389

ABSTRACT:
In managing and buffering packet data for transmission out of a host, descriptor ring data is pushed in from a host memory into a descriptor ring cache and cached therein. The descriptor ring data is processed to read a data packet descriptor, and a direct memory access is initiated to the host to read the data packet corresponding to the read data packet descriptor to a data transmission buffer. The data packet is written by the direct memory access into the data transmission buffer and cached therein. A return pointer is written to the host memory by the direct memory access indicating that the data packet descriptor has been read and the corresponding data packet has been transmitted. In managing and buffering packet data for transmission to a host, descriptor ring data is pushed in from a host memory into a descriptor ring cache and cached therein. Data packets for transmission to the host memory are received and cached in a data reception buffer. Data is read from the data reception buffer according to a data packet descriptor retrieved from the descriptor ring cache, and the data packet is written to a data reception queue within the host memory by a direct memory access. A return pointer is written to the host memory by the direct memory access indicating that the data packet has been written.

REFERENCES:
patent: 6941391 (2005-09-01), Kasper
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ITU-T Telecommunication Standardization Sector of ITU—G.984.4—Series G: Transmission Systems and Media, Digital Systems and Networks, Digital sections and digital line system—Optical line systems for local and access networks—Gigabit-capable Passive Optical Networks (G-PON): ONT management and control interface specification (2004).
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ITU-T Telecommunication Standardization Sector of ITU—G.984.4 Amendment 2—Series G: Transmission Systems and Media, Digital Systems and Networks, Digital sections and digital line system—Optical line systems for local and access networks—Gigabit-capable Passive Optical Networks (G-PON): ONT management and control interface specification (2006).
ITU-T Telecommunication Standardization Sector of ITU G.984.3—Series G: Transmission Systems and Media, Digital Systems and Networks, Digital sections and digital line system—Optical line systems for local and access networks—Gigabit-capable Passive Optical Networks (G-PON): Transmission convergence layer specification (2004).
ITU-T Telecommunication Standardization Sector of ITU G.984.4, Series G: Transmission Systems and Media, Digital Systems and Networks, Digital sections and digital line system—Optical line systems for local and access networks, Gigabit-capable Passive Optical Networks (G-PON): ONT management and control interface specification (2004).
ITU-T Telecommunication Standardization Sector of ITU G.984.4 Amendment 1, Series G: Transmission Systems and Media, Digital Systems and Networks—Digital sections and digital line system—Optical line systems for local and access networks, Gigabit-capable Passive Optical Networks (G-PON): ONT management and control interface specification (2005).
ITU-T Telecommunication Standardization Sector of ITU G.984.4 Amendment 2, Series G: Transmission Systems and Media, Digital Systems and Networks—Digital sections and digital line system—Optical line systems for local and access networks, Gigabit-capable Passive Optical Networks (G-PON): ONT management and control interface specification (2006).

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