摘要:
An objective of the present invention is to determine a function of each communication apparatus with few steps. A first communication apparatus (100) is capable of carrying out at least one of a function of an apparatus which receives an access thereto from a second communication apparatus (200), and a function of a host which accesses the second communication apparatus (200). The first communication apparatus (100) comprises: an access request issuing unit (140) which issues a request which denotes the function thereof to the second communication apparatus (200); and a conflict assessment unit (150) which, either when the request and a request which the second communication apparatus (200) has issued conflict or when the request is rejected, makes the access request issuing unit (140) reissue a request to the second communication apparatus (200) which denotes another function.
摘要:
A plurality of networks each having a host are connected to achieve a transparent transaction between devices belonging to the different networks. A target apparatus includes a station and a host. In response to a get device handle request from an initiator apparatus, the station acquires, from the host, configuration information of a target device and relays transactions between the initiator apparatus and the target device, without requiring involvement of the host.
摘要:
To achieve efficient data transfer between a first network 1 and a second network 2, and, in particular, to reduce processing load pertaining to address conversion, a transfer control device 110 in the first network 1 acquires an address of a transfer target device 240 in the second network 2, and assigns the acquired address to a transfer device 140 in the first network. When data transmitted through the first network 1 is to be transferred to the transfer target device 240 via the transfer device 140, there is no need to perform address conversion as the transfer device 140 and the transfer target device 240 are assigned the same address.
摘要:
To achieve efficient data transfer between a first network and a second network, and, in particular, to reduce processing load pertaining to address conversion, a transfer control device in the first network acquires an address of a transfer target device in the second network, and assigns the acquired address to a transfer device in the first network. When data transmitted through the first network is to be transferred to the transfer target device via the transfer device, there is no need to perform address conversion as the transfer device and the transfer target device are assigned the same address.
摘要:
A plurality of networks each having a host are connected to achieve a transparent transaction between devices belonging to the different networks. A target apparatus includes a station and a host. In response to a get device handle request from an initiator apparatus, the station acquires, from the host, configuration information of a target device and relays transactions between the initiator apparatus and the target device, without requiring involvement of the host.
摘要:
A security communication packet processing apparatus (100) comprises an encryption processing unit (102) that performs encryption processing and decryption processing in a data block unit of B1 bits, an authentication processing unit (104) that performs authentication processing in a data block unit of B2(=n×B1) bits in parallel to the encryption processing or the decryption processing in the encryption processing unit (102) and outputs an authentication value, a data block accumulation unit (103) that accumulates the data blocks from the encryption processing unit (102) and outputs the data blocks to the authentication processing unit (104) when the accumulated amount of the data blocks reaches B2 bits, a packet construction unit (105) that reconstructs a packet with the data blocks from the encryption processing unit (102) and the authentication value from the authentication processing unit (104), and an encryption and authentication processing control unit (101) that divides the inputted packet into the data blocks of B1 bits and outputs the data blocks sequentially to the encryption processing unit.
摘要:
The present invention performs efficient data transfer between devices. In particular, the present invention can reduce processing loads and power consumption of a response device and increase overall throughput. When a request device issues a direct transfer request to directly transfer data to or from a data storage unit included in the response device, the response device performs control so that data is directly transferred between a communication unit and the data storage unit. The request device is allowed to transparently and directly access the data storage unit included in the response device via the communication unit between the request device and the response device.
摘要:
A data transfer control device 1061 includes a read pointer update unit 5004 updating a value of a global read pointer RPg with a value of a local read pointer (first local read pointer) RPl1 held by a local read pointer hold unit 5007 when completion of data transfer is recognized and a position, in an order of reading descriptors, of a descriptor D3010a indicated by the local read pointer RPl1 is earlier than positions of descriptors D3010b and D3010c respectively indicated by local read pointers (second local read pointers) RPl2 and RPl3 held by the other data transfer control devices 1062 and 1063.
摘要:
The data transfer control device of the present invention is capable of improving data transfer efficiency while discarding error data, a DMA parameter storing control unit (1112) temporarily stores parameters to a store resource; a data processing unit (1201) performs error detection processing for data that is transferred; a DMA parameter return control unit (1122) causes parameters used at transfer time of data for which the processing result in the error detection processing was an error to be returned as parameters for subsequent data transfer use from the store resource; and a completion notification delay control unit (1121), with regard to the parameters, causes the completion notification to a host system that indicates that data transfer has completed normally for each of the parameters to wait for normal completion of data transfer that uses parameters that had been set earlier than each of the first-mentioned parameters.
摘要:
In a server, an echo-request transmitting unit transmits echo-request data to a target device, and an echo-reply receiving unit receives echo-reply data from the target device. A time measuring unit measures, as the target time, the time required between transmission of the echo-request data and reception of the echo-reply data, and compares the target time with the reference time. In this way, the server judges whether the target device connected to its network belongs to a predetermined group.