Packet reception control device and method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsTatsuro Ikoma, Masaaki Tamai
Life of this patent
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Abstract
The packet reception control device includes: a load detection section for detecting a load on a processor and outputting the detection result; and a reception control section for determining whether or not the processor should receive a reception packet based on the detection result output from the load detection section and outputting the determination result. The processor receives the reception packet according to the determination result output from the reception control section.
Claims58
A packet reception control device comprising:
- a load detection section for detecting a load on a processor and outputting the detection result;
- and
- a reception control section for determining whether or not the processor should receive a reception packet based on the detection result from the load detection section and outputting the determination result,
- wherein the processor receives the reception packet according to the determination result from the reception control section.
A packet reception control method for storing reception packets in a memory and then outputting the packets to a processor, the method comprising the steps of:
- detecting whether or not the processor is in an overload state;
- storing a first filter rule set including a filter rule indicating that a predetermined type of packets should be discarded if receiving the detection result indicating that the processor is in an overload state;
- discarding a reception packet matching any of the filter rules and outputting a reception packet matching none of the filter rules to the processor via the memory;
- scanning information on reception packets that have been stored in the memory according to the first filter rule set, to obtain frequency information indicating the reception frequency for each type of the reception packets;
- determining the type of packets to be discarded based on the frequency information;
- and
- storing a second filter rule set including a filter rule indicating the determined type of packets to be discarded in place of the first filter rule set.
Dependencies are inferred from the claim text.