Apparatus and method for allocating buffers of a memory including tracking a number of buffers used to store a received frame
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United States of America Patent
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Jan 6, 2015
Issued Date -
N/A
app pub date -
Jan 27, 2014
filing date -
May 5, 2003
priority date (Note) -
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Abstract
A network switch including a port receiving a first frame. A memory includes first buffers available to store frames and second buffers reserved for the port. A pointer module stores first pointers for the first buffers. A reserve module includes a counter, requests from the pointer module some of the first pointers, and increments the counter to count a number of pointers reserved for the first port. The pointers received from the pointer module are deemed reserved and as a result the first buffers, pointed to by the pointers received from the pointer module, are included in the second buffers. An ingress module stores the first frame in some of the second buffers and determines a destination channel for the first frame. The counter is incremented for each of the second buffers used to store the first frame. An egress module transmits the frame on the destination channel.
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