System and method for direct storage access in a content-centric network
First Claim
1. A computer-executable method for caching content data to a storage device attached to a switch in a content-centric network (CCN), the method comprising:
- receiving a first interest in a content packet;
receiving, by the switch, the content packet;
forwarding the content packet to an incoming port of the first interest in the content packet;
caching a copy of the content packet in the attached storage device, wherein the attached storage device is coupled to the switch via a communication link, and wherein the copy of the content packet is stored in a set of storage blocks located in the attached storage device;
assembling a query frame for retrieving content from at least one storage block, wherein the query frame is an Ethernet frame comprising;
an Ethernet header having a MAC address of the attached storage device; and
a logical block address (LBA) of a storage block in the set of storage blocks;
storing the query frame in a cache table in the switch; and
responsive to receiving an interest for content of the content packet, retrieving the query frame from the cache and transmitting the query frame to the attached storage device to retrieve the content packet based on the LBA, without assembling communication frames to retrieve the content packet.
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Accused Products
Abstract
One embodiment of the present invention provides a system for caching content data to a storage device attached to a node in a content-centric network (CCN). During operation, the system receives a content packet; forwards the content packet to an incoming port of an interest in the content packet; caches a copy of the content packet in the attached storage device, assembles a query; which includes at least a network header and an address associated with storage blocks at which the cached copy of the content packet is located, corresponding to the content packet; and stores the query in a cache table, thereby facilitating a subsequent direct access to the storage blocks using the assembled query to retrieve the copy of the content packet.
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Citations
15 Claims
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1. A computer-executable method for caching content data to a storage device attached to a switch in a content-centric network (CCN), the method comprising:
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receiving a first interest in a content packet; receiving, by the switch, the content packet; forwarding the content packet to an incoming port of the first interest in the content packet; caching a copy of the content packet in the attached storage device, wherein the attached storage device is coupled to the switch via a communication link, and wherein the copy of the content packet is stored in a set of storage blocks located in the attached storage device; assembling a query frame for retrieving content from at least one storage block, wherein the query frame is an Ethernet frame comprising; an Ethernet header having a MAC address of the attached storage device; and a logical block address (LBA) of a storage block in the set of storage blocks; storing the query frame in a cache table in the switch; and responsive to receiving an interest for content of the content packet, retrieving the query frame from the cache and transmitting the query frame to the attached storage device to retrieve the content packet based on the LBA, without assembling communication frames to retrieve the content packet. - View Dependent Claims (2, 3, 4, 5)
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6. A system for caching content data to a storage device attached to a switch in a content-centric network (CCN), the system comprising:
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a processor; a second storage device coupled to the processor and storing instructions which when executed by the processor cause the processor to perform a method, the method comprising; receiving a first interest in a content packet; receiving, by the switch, the content packet; forwarding the content packet to an incoming port of the first interest in the content packet; caching a copy of the content packet in the attached storage device, wherein the attached storage device is coupled to the switch via a communication link, and wherein the copy of the content packet is stored in a set of storage blocks located in the attached storage device; assembling a query frame for retrieving content from at least one storage block, wherein the query frame is an Ethernet frame comprising; an Ethernet header having a MAC address of the attached storage device; and a logical block address (LBA) of a storage block in the set of storage blocks, storing the query frame in a cache table in the switch; and responsive to receiving an Interest for content of the content packet, retrieving the query frame from the cache and transmitting the query frame to the attached storage device to retrieve the content packet based on the LBA, without assembling communication frames to retrieve the content packet. - View Dependent Claims (7, 8, 9, 10)
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11. A non-transitory computer-readable storage medium storing instructions that when executed by a computer cause the computer to perform a method for caching content data to a storage device attached to a switch in a content-centric network (CCN), the method comprising:
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receiving a first interest in a content packet; receiving, by the switch, the content packet; forwarding the content packet to an incoming port of the first interest in the content packet; caching a copy of the content packet in the attached storage device, wherein the attached storage device is coupled to the switch via a communication link, and wherein the copy of the content packet is stored in a set of storage blocks located in the attached storage device; assembling a query frame for retrieving content from at least one storage block, wherein the query fame is an Ethernet frame comprising; an Ethernet header having a MAC address of the attached storage device; and a logical block address (LBA) of a storage block in the set of storage blocks; storing the query frame in a cache table in the switch; and responsive to receiving an Interest for content of the content packet, retrieving the query frame from the cache and transmitting the query frame to the attached storage device to retrieve the content packet based on the LBA, without assembling communication frames to retrieve the content packet. - View Dependent Claims (12, 13, 14, 15)
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Specification