Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate
2007-10-16
2007-10-16
Duong, Frank (Department: 2616)
Multiplex communications
Pathfinding or routing
Switching a message which includes an address header
C370S466000
Reexamination Certificate
active
10196424
ABSTRACT:
Method for increasing the transmit and receive efficiency of an embedded Ethernet controller, which is applicable to an embedded Ethernet controller connected with a local area network and a wide area network respectively for handling packet processing by utilizing a direct memory access structure via an independent data bus, includes the steps of mapping each said receive buffer into a plurality fo fixed size packet storage spaces each providing individually separated memory spaces in four-byte alignment to store a packet header, packet CRC and packet data, as well as mapping a surplus memory space from a receding packet, such that it is only necessary to move and change the packet header in the receive packet and then insert a required protocol header into the surplus memory space to convert the receive packet into a transmit packet.
REFERENCES:
patent: 6157955 (2000-12-01), Narad et al.
patent: 6393457 (2002-05-01), Allison et al.
patent: 6751680 (2004-06-01), Langerman et al.
Realtek, Realtek Ethernet Media Access Controller With Power Management RTL8169, pp. 1-92, Mar. 2002.
Shivam et al, EMP: Zero-copy OS-bypass NIC-driven Gigabit Ethernet Message Passing, ACM, pp. 1-7, 2001.
Bacon & Thomas PLLC
D-Link Corporation
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