Electrical computers and digital data processing systems: input/ – Access locking
Reexamination Certificate
2006-07-21
2008-11-25
Phan, Raymond N (Department: 2111)
Electrical computers and digital data processing systems: input/
Access locking
C710S036000
Reexamination Certificate
active
07457902
ABSTRACT:
A switch connection lock and release mechanism is disclosed to prevent out-of-order frames from being received by FC and/or SATA devices. The mechanism includes a set of previous AL_PA registers, alpa_reg[N:0], one for each port, and a bit vector, prev_conn[M:0], one bit for each Buffer Bank (BB). If a connection is closed prematurely, the valid AL_PA of the destination device and the source port number are stored in the previous AL_PA register associated with the destination port, and the bit in the bit vector associated with the source BB is asserted. Together, the valid AL_PA, the source port and the asserted bit form a connection lock on the destination port that effectively will deny access to the destination port to all BBs with the same destination AL_PA and source port number except the source BB.
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Goodwin William Patrick
Yang Kent YingKuang
Emulex Design & Manufacturing Corporation
Morrison & Foerster / LLP
Phan Raymond N
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